WO2015053108A1 - Production method for pressure damper - Google Patents

Production method for pressure damper Download PDF

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Publication number
WO2015053108A1
WO2015053108A1 PCT/JP2014/075787 JP2014075787W WO2015053108A1 WO 2015053108 A1 WO2015053108 A1 WO 2015053108A1 JP 2014075787 W JP2014075787 W JP 2014075787W WO 2015053108 A1 WO2015053108 A1 WO 2015053108A1
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WO
WIPO (PCT)
Prior art keywords
pressure buffer
buffer film
pressure
housing
film
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PCT/JP2014/075787
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French (fr)
Japanese (ja)
Inventor
加藤　茂
大西　勝
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株式会社ミマキエンジニアリング
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Publication of WO2015053108A1 publication Critical patent/WO2015053108A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms

Definitions

  • the present invention relates to a method for manufacturing a pressure buffer.
  • a pressure buffer provided with an ink-jet printing apparatus and having a pressure buffer film.
  • the pressure buffer film is used to buffer pressure fluctuations that occur when ink is supplied to the inkjet head.
  • the pressure buffer of patent document 1 is mentioned.
  • the pressure buffer film is usually welded to the pressure buffer body by hot press welding or ultrasonic welding.
  • the pressure buffer film is formed into a corrugated shape and pressure is buffered by the obtained elasticity, but in order to maintain the shape provided in the pressure buffer film and ensure elasticity, the pressure buffer film is made thick.
  • this pressure buffer film is thermocompression bonded with a heated hot press jig, only the surface is melted and heat is not transmitted to the main body, so that welding does not work well or the shape of the pressure buffer film collapses and is elastic. There is also a problem of deterioration.
  • the present invention has been made in view of the above problems, and an object of the present invention is to manufacture a pressure buffer device with a high yield.
  • a method of manufacturing a pressure shock absorber according to the present invention includes a pressure shock absorber provided with a pressure chamber formed by a housing having a recess and a pressure buffer film for covering the recess.
  • a manufacturing method comprising: a clamping step of clamping the pressure buffer film between the casing and a pressing member; and a laser through the pressing member on a contact surface between the casing and the pressure buffer film. It is characterized by including a bonding step of irradiating light to bond the casing and the pressure buffer film.
  • the pressure buffer can be manufactured with a high yield.
  • the contact surface between the housing and the pressure buffer film can be efficiently heated. It is difficult to occur, and it is possible to prevent the elasticity of the pressure buffer film from being lost and the elasticity from being deteriorated.
  • the thickness of the pressure buffer film is preferably 30 ⁇ m or more and 2000 ⁇ m or less.
  • the contact surface between the pressure buffer film and the housing can be heated by the laser beam, so it is necessary to heat the pressure buffer film excessively. Therefore, deformation of the pressure buffer film due to heat unevenness can be suppressed. Further, even if the pressure buffer film is thickened to maintain its shape and ensure elasticity, it can be joined to the housing while maintaining its shape and elasticity.
  • the pressure buffer film preferably has at least a corrugated shape.
  • the pressure buffer film having a corrugated shape can be joined to the housing without being deformed by heat. That is, the pressure buffer film in which the corrugated shape is maintained can be suitably bonded to the housing.
  • the wavelength of the laser beam is preferably 700 nm or more and 12000 nm or less.
  • the contact surface between the housing and the pressure buffer film can be suitably irradiated with laser light.
  • the pressure buffer film and the housing are formed of the same material.
  • the casing and the pressure buffer film are easily welded. Therefore, the casing and the pressure buffer film can be joined quickly and reliably.
  • the pressure buffer film transmits at least part of the laser light.
  • the laser beam that has been transmitted without being absorbed by the pressure buffer film is suitably applied to the contact surface between the housing and the pressure buffer film. For this reason, a pressure buffer film and a housing
  • the housing and the pressure buffer film can be joined without excessively heating the pressure buffer film, it is possible to suppress the occurrence of defects such as wrinkles and peeling of the pressure buffer film due to heat.
  • the pressure buffer can be manufactured with good yield.
  • FIG. 1 is a cross-sectional view illustrating an outline of a pressure buffer 10 manufactured by a manufacturing method according to an embodiment of the present invention.
  • the pressure shock absorber 10 is an example of a pressure shock absorber manufactured by the method for manufacturing a pressure shock absorber according to an embodiment of the present invention.
  • the pressure shock absorber 10 is a path for supplying liquid from an ink tank to an ink jet head. It is provided in the part.
  • the pressure buffer 10 buffers fluctuations in the supply pressure of the liquid supplied from the ink container to the inkjet head, and stabilizes the discharge amount of the liquid from the inkjet head.
  • the pressure buffer 10 includes a housing 1, a pressure buffer film 2, a pressure chamber 3, a valve body 4, a supply chamber 5, an urging member 6, a seal member 7, and a pressing member 8. .
  • the housing 1 includes a recess provided with a through hole 1a on its bottom surface and a supply chamber 5 adjacent to the bottom surface side of the recess and communicating with the recess via the through hole 1a.
  • the opening surface of the recess is covered with the pressure buffer film 2, and the pressure chamber 3 is formed by the recess and the pressure buffer film 2.
  • the pressure buffer film 2 is provided so as to cover the concave portion of the housing 1, and has elasticity that bends due to a change in pressure accompanying an increase or decrease in ink in the pressure chamber 3. As a result, the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess of the housing 1 as the negative pressure of the pressure chamber 3 increases, and from the bottom surface of the recess of the housing 1 as the pressure in the pressure chamber 3 increases. Displaces away.
  • the pressure buffer film 2 has a corrugated shape 2a.
  • the corrugated shape 2a By providing the corrugated shape 2a on the pressure buffer film 2, when the pressure in the pressure chamber 3 fluctuates, an urging force is applied in the direction in which the pressure buffer film 2 is displaced. That is, by providing the corrugated shape 2 a in the pressure buffer film 2, the pressure buffer film 2 can be displaced more effectively with the pressure fluctuation in the pressure chamber 3.
  • the pressure buffer film used in the method for manufacturing a pressure buffer according to the present invention has a corrugated shape at least partially.
  • the corrugated shape includes a bellows shape and a corrugated shape, and is intended to be a shape that enhances the elastic force of the pressure buffer film.
  • the portion where the corrugated shape 2 a is formed has a waveform shape.
  • the corrugated mountain fold line and valley fold line may be provided so as to form a concentric shape.
  • the corrugated shape 2 a has a concentric circle formed by corrugated mountain fold lines and valley fold lines when the pressure buffer film 2 is viewed from above. More preferably, it is provided.
  • the pressure chamber 3 is a space formed by covering the concave portion of the housing 1 with the pressure buffer film 2.
  • the inside of the pressure chamber 3 can store liquid.
  • a through hole 1c is provided on the side surface of the pressure chamber 3, and communicates with an ink jet head (not shown) through the through hole 1c. Then, the liquid supplied to the pressure chamber 3 through the through hole 1a is supplied to the inkjet head through the through hole 1c.
  • the valve body 4 is provided so as to extend from the inside of the pressure chamber 3 to the inside of the supply chamber 5 through the through-hole 1a. Accordingly, the through hole 1a is opened and closed.
  • the valve body 4 has a projection shape at a position on the supply chamber 5 side, and the projection shape comes into contact with the wall surface communicating with the through hole 1a of the supply chamber 5, thereby closing the through hole 1a. By separating the protrusion shape, the through hole 1a can be opened.
  • the supply chamber 5 communicates with an ink tube or an ink container (not shown) through a through hole 1b provided on the side surface. Thereby, the liquid from an ink tube or an ink container is supplied to the supply chamber 5 through the through-hole 1b. And the liquid supplied to the supply chamber 5 is supplied to the pressure chamber 3 through the through-hole 1a.
  • the urging member 6 is installed on a surface of the supply chamber 5 that faces the surface that communicates with the through hole 1a, and applies an urging force to the valve body 4 in the direction of closing the through hole 1a.
  • the urging member 6 applies an urging force in a direction opposite to the urging force applied to the valve body 4 by the displacement of the pressure buffer film 2 to the valve body 4.
  • a spring or the like can be used as the urging member 6, a spring or the like can be used.
  • the seal member 7 is disposed so as to surround the opening of the through hole 1a on the supply chamber 5 side, and when the protruding portion of the valve body comes into contact with the wall surface of the supply chamber 5, the valve body 4 and the supply chamber 5 It is located between and seals between these.
  • the seal member 7 for example, an O-ring or packing formed of rubber, silicone or the like can be used.
  • the pressing member 8 is provided on the side of the pressure buffer film 2 facing the pressure chamber 3.
  • the pressing member 8 contacts the valve body 4 and presses the valve body 4 when the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess.
  • the pressing member 8 can suitably press the valve body 4 by the urging force of the pressure buffer film 2.
  • the pressure buffer 10 can buffer fluctuations in the supply pressure of the liquid supplied from the ink tube or the ink container to the inkjet head. Therefore, a stable amount of liquid can be discharged from the inkjet head.
  • FIG. 2 is a schematic diagram for explaining the outline of the manufacturing method according to one embodiment of the present invention.
  • the manufacturing method of the pressure buffer which concerns on one Embodiment of this invention is equipped with the pressure chamber 3 formed of the housing
  • the contact surface between the housing 1 and the pressure buffer film 2 is irradiated with laser light through the pressing plate 9 to join the housing 1 and the pressure buffer film 2 (FIG. 2 (c) and ( d)).
  • the contact surface between the housing 1 and the pressure buffer film 2 can be efficiently heated. Further, it is difficult to cause poor welding, and it is possible to prevent the shape of the pressure buffer film 2 from being broken and the elasticity from being deteriorated.
  • the pressure buffer 10 can be manufactured without mixing foreign matter inside.
  • the pressure buffer film 2, the casing 1, and the pressing plate 9 used in the method for manufacturing a pressure shock absorber according to an embodiment of the present invention will be described below.
  • the pressure buffer film 2 having a thickness of 30 ⁇ m or more and 2000 ⁇ m or less may be used.
  • the thickness of the pressure buffer film 2 is within the above range, the contact surface between the pressure buffer film and the housing can be heated by the laser beam, so there is no need to heat the pressure buffer film 2 excessively. Further, deformation of the pressure buffer film 2 due to heat unevenness can be suppressed. Therefore, even if the pressure buffer film 2 is thick, the production of the pressure buffer 10 can suppress the occurrence of defective products, and the pressure buffer 10 can be manufactured with high yield.
  • the material characteristics of the material of the pressure buffer film 2 can be fully utilized as compared with the case where the film thickness is thinner than the above range. That is, in order to maintain the shape of the pressure buffer film 2 and ensure elasticity, the pressure buffer film 2 can be reliably bonded to the housing 1 even if the pressure buffer film 2 is thick.
  • the pressure buffer film 2 has a corrugated shape 2a.
  • the pressure buffer film forming such a shape needs to be thick.
  • even the thick pressure buffer film 2 can be suitably joined to the housing 1. Therefore, even the pressure buffer film 2 having a corrugated shape or the like can be suitably joined to the housing 1.
  • the pressure buffer film 2 can be molded using a material such as polyolefin such as polyethylene and polypropylene, polyester, methacrylic resin, polystyrene, and polyvinylidene chloride. Moreover, it can also shape
  • the pressure buffer film 2 is molded by using a sheet in which a layer containing polyolefin having high solvent resistance and a layer containing ethylene-vinyl alcohol copolymer, nylon, polyvinylidene chloride, etc. having high gas barrier properties are laminated. Also good.
  • transmits at least one part of a laser beam.
  • the pressure buffer film 2 transmits at least a part of the laser light the laser light transmitted without being absorbed by the pressure buffer film 2 is suitably applied to the contact surface between the housing 1 and the pressure buffer film 2. .
  • casing 1 can be joined efficiently. Further, the pressure buffer film 2 can be prevented from being excessively heated by the laser light.
  • the housing 1 may be formed of polyolefin such as polyethylene and polypropylene.
  • the housing 1 may be formed of the same material as the pressure buffer film 2.
  • the pressure buffer film 2 and the housing 1 are formed by forming the pressure buffer film 2 having a high transparency with respect to the laser light and the housing 1 having a transparency with respect to the laser light lower than that of the pressure buffer film 2 from the same material. It becomes easy to weld by laser light irradiation. Therefore, the housing 1 and the pressure buffer film 2 can be joined quickly and reliably.
  • the casing 1 is preferably colored.
  • the housing 1 may be colored with various colorants such as dyes or pigments. By coloring the housing 1, the housing 1 can easily absorb laser light.
  • casing 1 is not specifically limited, It is especially preferable that it is black. By coloring the housing 1 black, the housing 1 can be more suitably absorbed by the laser light.
  • the housing 1 can absorb the laser light more easily than the pressure buffer film 2. .
  • fever by irradiation of a laser beam becomes easy to generate
  • the pressure buffer film 2 and the housing 1 can be joined without excessively applying heat to the pressure buffer film 2.
  • the width of the joint surface between the housing 1 and the pressure buffer film 2 may be in the range of 0.5 mm to 1.0 mm.
  • fever is not produced like hot press welding.
  • the pressure buffer film 2 having a thickness of 30 ⁇ m or more and 2000 ⁇ m or less (0.03 mm or more and 0.2 mm or less) can be suitably bonded to the bonding surface of the casing 1 having a width of 0.5 mm or more and 10 mm or less. .
  • the holding plate 9 is a member that sandwiches the pressure buffer film 2 placed so as to cover the concave portion of the housing 1 with the housing 1.
  • the pressure buffer film 2 is fixed at a position in contact with the housing 1.
  • the pressing plate 9 may be formed of a material that transmits laser light for joining the pressure buffer film 2 and the housing 1. Examples of such a material include heat-resistant glass such as quartz glass and Pyrex (registered trademark).
  • heat-resistant glass such as quartz glass and Pyrex (registered trademark).
  • the holding plate 9 transmits laser light, it is not heated excessively by the laser light. Therefore, the presser plate 9 and the pressure buffer film 2 are not joined by the heat of the presser plate 9. For this reason, in order to prevent the bonding between the pressure buffer film 2 and the pressing plate 9, the surface of the pressure buffer film 2 on the side in contact with the pressing plate 9 has a good releasability such as a polytetrafluoroethylene (PTFE) sheet. It is not necessary to prepare a sheet or a sheet having a high melting point such as a polyethylene terephthalate (PET) sheet by laminating.
  • PTFE polytetrafluoroethylene
  • FIGS. 2A and 2B are schematic views illustrating a clamping step included in the method for manufacturing a pressure shock absorber according to one embodiment of the present invention.
  • FIG. 2 is a diagram for explaining a state before the pressure buffer film 2 is disposed between the casing 1 and the pressing plate 9 and sandwiched
  • FIG. 6 is a diagram for explaining a state in which the pressure buffer film 2 is sandwiched between the housing 1 and the pressing plate 9.
  • the sandwiching step is a step of sandwiching the pressure buffer film 2 placed on the housing 1 so as to cover the concave portion of the housing 1 between the pressing plate 9 and the housing 1.
  • the housing 1 is arranged so that the concave portion faces upward.
  • the pressure buffer film 2 is arrange
  • the pressure plate 9 is disposed on the pressure buffer film 2 so that the positions of the case 1 and the pressure buffer film 2 do not shift, and the pressure buffer film 2 is interposed between the case 1 and the pressure plate 9. Holding is performed ((b) in FIG. 2).
  • FIG. 2 is a mimetic diagram explaining a joining process included in a manufacturing method of a pressure buffer concerning one embodiment of the present invention.
  • (c) of FIG. 2 is a diagram for explaining a state in which the joining surface between the casing 1 and the pressure buffer film 2 is irradiated with laser light through the presser plate 9, and (d) of FIG. ) Is a diagram illustrating a state in which the presser plate 9 is removed from the pressure buffer 10 after the laser light irradiation.
  • the pressure buffer film 2 is sandwiched between the housing 1 and the presser plate 9, and the contact surface between the housing 1 and the pressure buffer film 2 is irradiated with laser light through the presser plate 9.
  • the casing 1 and the pressure buffer film 2 are joined.
  • the laser light irradiated in the bonding step may be uniaxial light, but may be irradiated with multi-axis or belt-shaped laser light.
  • the laser beam irradiated in the bonding step may be uniaxial light, but may be irradiated with multi-axis or belt-shaped laser light.
  • the irradiation time of the laser beam in the bonding process may be adjusted so that the housing 1 and the pressure buffer film 2 can be bonded appropriately, but is preferably in the range of 0.05 seconds to 10 seconds.
  • the irradiation of the laser beam in the joining step may be performed, for example, while moving a material sandwiching the pressure buffer film 2 between the housing 1 and the pressing plate 9.
  • the irradiation time of the laser beam can be adjusted by adjusting the moving speed of the pressure buffer film 2 sandwiched between the housing 1 and the pressing plate 9.
  • the wavelength of the laser light irradiated in the bonding step is preferably 700 nm or more and 12000 nm or less. As a result, it is possible to suitably irradiate the contact surface between the housing 1 and the pressure buffer film 2 with laser light.
  • the output of the laser beam may be appropriately adjusted in consideration of the irradiation time of the laser beam and the melting points of the materials of the housing 1 and the pressure buffer film 2.
  • the bonding step is completed by removing the pressing plate 9 ((d) in FIG. 2).
  • the manufacturing method of the pressure shock absorber 10 is a manufacturing method of the pressure shock absorber 10 including the pressure chamber 3 formed by the housing 1 having a recess and the pressure buffer film 2 for covering the recess. 1 and a pressing plate (pressing member) 9, and a laser beam is applied to the contact surface between the housing 1 and the pressure buffering film 2 via the pressing plate 9. And the joining process which joins the housing
  • the housing 1 and the pressure buffer film 2 can be joined without excessively heating the pressure buffer film 2. Therefore, it is possible to suppress the occurrence of defects such as wrinkles and peeling of the pressure buffer film 2 when the casing 1 and the pressure buffer film 2 are joined. Therefore, the pressure buffer 10 can be manufactured with a high yield.
  • the contact surface between the housing 1 and the pressure buffer film 2 can be efficiently heated. Further, it is difficult to cause poor welding, and it is possible to prevent the shape of the pressure buffer film 2 from being broken and the elasticity from being deteriorated.
  • the pressure buffer 10 can be manufactured without mixing foreign matter inside.
  • the thickness of the pressure buffer film 2 is 30 ⁇ m or more and 2000 ⁇ m or less.
  • the contact surface between the pressure buffer film 2 and the housing 1 can be heated by the laser beam. Therefore, the deformation of the pressure buffer film 2 due to heat unevenness can be suppressed. Further, even if the pressure buffer film 2 is thickened to maintain its shape and ensure elasticity, it can be joined to the housing 1 while maintaining its shape and elasticity.
  • the pressure buffer film 2 has a corrugated shape 2a at least in part.
  • the pressure buffer film 2 since the pressure buffer film 2 is not excessively heated, the pressure buffer film 2 having the corrugated shape 2a can be joined to the housing 1 without being deformed by heat. That is, the pressure buffer film 2 in which the corrugated shape 2a is maintained can be suitably bonded to the housing 1.
  • the wavelength of the laser beam is 700 nm or more and 12000 nm or less.
  • the contact surface between the housing 1 and the pressure buffer film 2 can be suitably irradiated with laser light.
  • the pressure buffer film 2 and the housing 1 are formed of the same material.
  • the casing 1 and the pressure buffer film 2 are easily welded. Therefore, the housing 1 and the pressure buffer film 2 can be joined quickly and reliably.
  • the pressure buffer film 2 transmits at least a part of the laser light.
  • the laser beam that is transmitted without being absorbed by the pressure buffer film 2 is suitably irradiated to the contact surface between the housing 1 and the pressure buffer film 2. For this reason, the pressure buffer film 2 and the housing
  • the present invention can be used for manufacturing a pressure buffer in an ink jet recording apparatus.

Abstract

In order to provide a high yielding production method for a pressure damper, this production method for a pressure damper (10) is for a pressure damper (10) equipped with a pressure chamber (3), which is formed from a recess-containing casing (1) and a pressure damping film (2) for covering the recess, and includes: a sandwiching step in which the pressure damping film (2) is sandwiched between the casing (1) and a pressing plate (9); and a joining step in which a laser beam is irradiated through the pressing plate (9) on to the contact surface between the casing (1) and the pressure damping film (2), to join the casing (1) and the pressure damping film (2).

Description

圧力緩衝器の製造方法Manufacturing method of pressure buffer
　本発明は、圧力緩衝器の製造方法に関する。 The present invention relates to a method for manufacturing a pressure buffer.
　インクジェット印刷装置に設けられた、圧力緩衝膜を備えた圧力緩衝器が知られている。圧力緩衝膜は、インクジェットヘッドへのインク供給時に生じる圧力変動を緩衝するために用いられる。このような、圧力緩衝器の例として、特許文献１の圧力緩衝器が挙げられる。 There is known a pressure buffer provided with an ink-jet printing apparatus and having a pressure buffer film. The pressure buffer film is used to buffer pressure fluctuations that occur when ink is supplied to the inkjet head. As an example of such a pressure buffer, the pressure buffer of patent document 1 is mentioned.
特開２００８－１４３０８１号公報（２００８年６月２６日公開）JP 2008-143081 A (released on June 26, 2008)
　従来の圧力緩衝器においては、圧力緩衝膜は通常、熱プレス溶着又は超音波溶着によって圧力緩衝器本体に溶着される。 In the conventional pressure buffer, the pressure buffer film is usually welded to the pressure buffer body by hot press welding or ultrasonic welding.
　しかしながら、熱プレスにより圧力緩衝膜を溶着する場合、予め圧力緩衝膜の融点以上に加熱された熱プレス治具と本体との間に圧力緩衝膜を挟むことにより接合する。このため、熱プレス治具と圧力緩衝膜との接触面から加熱されることになり、圧力緩衝膜と本体との接触面が加熱されて接合するまでに、圧力緩衝膜が過度に加熱されるという問題がある。このため、熱プレスによる圧力緩衝膜の溶着では、接合するときの過度な熱によって、圧力緩衝膜に皺及び剥れといった不良が起こりやすいという問題がある。このため、熱プレス溶着による圧力緩衝器の製造では、不良品が生じやすく、歩留りが非常に悪くなるという問題がある。 However, when the pressure buffer film is welded by hot pressing, the pressure buffer film is bonded between the main body and a hot press jig that has been heated to a temperature equal to or higher than the melting point of the pressure buffer film. For this reason, it will be heated from the contact surface of a hot press jig and a pressure buffer film, and a pressure buffer film will be heated excessively until the contact surface of a pressure buffer film and a main part is heated and joined. There is a problem. For this reason, in the welding of the pressure buffer film by hot pressing, there is a problem that defects such as wrinkles and peeling easily occur in the pressure buffer film due to excessive heat at the time of bonding. For this reason, in manufacture of the pressure buffer by hot press welding, there exists a problem that a defective article tends to arise and a yield becomes very bad.
　また、圧力緩衝膜をコルゲート形状にして、得られる弾性によって圧力の緩衝を行なう場合があるが、圧力緩衝膜に設けられた形状を維持し、弾性を確保するためには、圧力緩衝膜を厚くする必要がある。しかし、この圧力緩衝膜を、加熱した熱プレス治具によって熱圧着すると、表面だけ溶けてしまい、本体側に熱が伝わらないので、溶着が上手くいかなかったり、圧力緩衝膜の形状が崩れて弾性が劣化したりするという問題もある。 In addition, there is a case where the pressure buffer film is formed into a corrugated shape and pressure is buffered by the obtained elasticity, but in order to maintain the shape provided in the pressure buffer film and ensure elasticity, the pressure buffer film is made thick. There is a need to. However, when this pressure buffer film is thermocompression bonded with a heated hot press jig, only the surface is melted and heat is not transmitted to the main body, so that welding does not work well or the shape of the pressure buffer film collapses and is elastic. There is also a problem of deterioration.
　また、超音波溶着により圧力緩衝膜を溶着する場合、超音波振動の摩擦によって筐体及び圧力緩衝膜の樹脂から粉塵が生成され、圧力緩衝器の内部に異物として残留するという問題がある。 Further, when the pressure buffer film is welded by ultrasonic welding, there is a problem that dust is generated from the resin of the casing and the pressure buffer film by friction of ultrasonic vibration and remains as a foreign substance inside the pressure buffer.
　本発明は、上記問題点に鑑みてなされたものであり、その目的は、歩留りよく圧力緩衝機器を製造することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to manufacture a pressure buffer device with a high yield.
　上記の課題を解決するために、本発明に係る圧力緩衝器の製造方法は、凹部を有する筐体と、当該凹部を覆うための圧力緩衝膜とにより形成された圧力室を備える圧力緩衝器の製造方法であって、上記筐体と、押さえ部材との間に、上記圧力緩衝膜を挟持する挟持工程と、上記筐体と上記圧力緩衝膜との接触面に、上記押さえ部材を介してレーザ光を照射して、上記筐体と上記圧力緩衝膜を接合する接合工程とを包含していることを特徴としている。 In order to solve the above-described problem, a method of manufacturing a pressure shock absorber according to the present invention includes a pressure shock absorber provided with a pressure chamber formed by a housing having a recess and a pressure buffer film for covering the recess. A manufacturing method, comprising: a clamping step of clamping the pressure buffer film between the casing and a pressing member; and a laser through the pressing member on a contact surface between the casing and the pressure buffer film. It is characterized by including a bonding step of irradiating light to bond the casing and the pressure buffer film.
　上記構成によれば、透明な樹脂層側からレーザ光を照射することによって筐体と圧力緩衝膜との接触面に熱を発生させることができるため、熱プレス溶着による接合のように、圧力緩衝膜を過度に加熱することなく、筐体と圧力緩衝膜とを接合することができる。従って、筐体と圧力緩衝膜とを接合するときに圧力緩衝膜の皺及び剥れといった不良の発生を抑えることができる。従って、圧力緩衝器を歩留りよく製造することができる。 According to the above configuration, heat can be generated on the contact surface between the housing and the pressure buffer film by irradiating the laser beam from the transparent resin layer side. The casing and the pressure buffer film can be joined without excessively heating the film. Therefore, the occurrence of defects such as wrinkles and peeling of the pressure buffer film when the case and the pressure buffer film are joined can be suppressed. Therefore, the pressure buffer can be manufactured with a high yield.
　また、圧力緩衝膜の形状を維持し、弾性を確保するために、圧力緩衝膜を厚くした場合でも、筐体と圧力緩衝膜との接触面を効率よく加熱することができるため、溶着不良が生じにくく、かつ、圧力緩衝膜の形状が崩れて弾性が劣化することを防ぐことができる。 In addition, in order to maintain the shape of the pressure buffer film and ensure elasticity, even when the pressure buffer film is thickened, the contact surface between the housing and the pressure buffer film can be efficiently heated. It is difficult to occur, and it is possible to prevent the elasticity of the pressure buffer film from being lost and the elasticity from being deteriorated.
　さらに、接合するときに振動によって摩擦を生じないため、筐体と圧力緩衝膜との樹脂から粉塵を生成することがない。このため、内部に異物を混入させることなく圧力緩衝器を製造することができる。 Furthermore, since friction is not generated by vibration when joining, dust is not generated from the resin of the casing and the pressure buffer film. For this reason, a pressure buffer can be manufactured, without mixing a foreign material inside.
　また、本発明に係る圧力緩衝器の製造方法において、上記圧力緩衝膜の厚さは、３０μｍ以上２０００μｍ以下であることが好ましい。 Further, in the method for manufacturing a pressure buffer according to the present invention, the thickness of the pressure buffer film is preferably 30 μm or more and 2000 μm or less.
　上記構成によれば、圧力緩衝膜の厚さを上記範囲内した場合でも、レーザ光により圧力緩衝膜と筐体との接触面を加熱することができるので、圧力緩衝膜を過度に加熱する必要がなく、熱ムラによる圧力緩衝膜の変形を抑えることができる。また、形状を維持し、弾性を確保するために厚くした圧力緩衝膜であっても、その形状及び弾性を維持して筐体に接合することができる。 According to the above configuration, even when the thickness of the pressure buffer film is within the above range, the contact surface between the pressure buffer film and the housing can be heated by the laser beam, so it is necessary to heat the pressure buffer film excessively. Therefore, deformation of the pressure buffer film due to heat unevenness can be suppressed. Further, even if the pressure buffer film is thickened to maintain its shape and ensure elasticity, it can be joined to the housing while maintaining its shape and elasticity.
　また、本発明に係る圧力緩衝器の製造方法において、上記圧力緩衝膜は、少なくとも一部にコルゲート形状を有していることが好ましい。 In the pressure shock absorber manufacturing method according to the present invention, the pressure buffer film preferably has at least a corrugated shape.
　上記構成によれば、過度に圧力緩衝膜を加熱することがないため、コルゲート形状を有する圧力緩衝膜を、熱によって変形させることなく筐体に接合することができる。すなわち、コルゲート形状が維持された圧力緩衝膜を好適に筐体に接合することができる。 According to the above configuration, since the pressure buffer film is not heated excessively, the pressure buffer film having a corrugated shape can be joined to the housing without being deformed by heat. That is, the pressure buffer film in which the corrugated shape is maintained can be suitably bonded to the housing.
　また、本発明に係る圧力緩衝器の製造方法において、上記レーザ光の波長は、７００ｎｍ以上１２０００ｎｍ以下であることが好ましい。 In the method for manufacturing a pressure buffer according to the present invention, the wavelength of the laser beam is preferably 700 nm or more and 12000 nm or less.
　上記構成によれば、筐体と圧力緩衝膜との接触面に好適にレーザ光を照射することができる。 According to the above configuration, the contact surface between the housing and the pressure buffer film can be suitably irradiated with laser light.
　本発明に係る圧力緩衝器の製造方法において、上記圧力緩衝膜と上記筐体とは、同一の材料により形成されていることが好ましい。 In the method for manufacturing a pressure shock absorber according to the present invention, it is preferable that the pressure buffer film and the housing are formed of the same material.
　上記構成によれば、筐体と圧力緩衝膜とは溶着しやすくなる。従って、筐体と圧力緩衝膜とを速やかにかつ確実に接合することができる。 According to the above configuration, the casing and the pressure buffer film are easily welded. Therefore, the casing and the pressure buffer film can be joined quickly and reliably.
　本発明の圧力緩衝器において、上記圧力緩衝膜は、レーザ光の少なくとも一部を透過することが好ましい。 In the pressure buffer of the present invention, it is preferable that the pressure buffer film transmits at least part of the laser light.
　上記構成によれば、圧力緩衝膜に吸収されずに透過したレーザ光が、筐体と圧力緩衝膜との接触面に好適に照射される。このため、効率よく、圧力緩衝膜と筐体とを接合することができる。 According to the above configuration, the laser beam that has been transmitted without being absorbed by the pressure buffer film is suitably applied to the contact surface between the housing and the pressure buffer film. For this reason, a pressure buffer film and a housing | casing can be joined efficiently.
　本発明は、圧力緩衝膜を過度に加熱することなく、筐体と圧力緩衝膜とを接合することができるため、熱による圧力緩衝膜の皺及び剥れ等の不良の発生を抑えることができ、歩留りよく圧力緩衝器を製造することができるという効果を奏する。 In the present invention, since the housing and the pressure buffer film can be joined without excessively heating the pressure buffer film, it is possible to suppress the occurrence of defects such as wrinkles and peeling of the pressure buffer film due to heat. The pressure buffer can be manufactured with good yield.
本発明の一実施形態に係る製造方法によって製造される圧力緩衝器の一例の概略を説明する断面図である。It is sectional drawing explaining the outline of an example of the pressure buffer manufactured by the manufacturing method which concerns on one Embodiment of this invention. 本発明の一実施形態に係る製造方法の概略を説明する模式図である。It is a schematic diagram explaining the outline of the manufacturing method which concerns on one Embodiment of this invention.
　図１及び図２を用いて本発明の一実施形態に係る圧力緩衝器の製造方法について詳細に説明する。図１は、本発明の一実施形態に係る製造方法によって製造される圧力緩衝器１０の概略について説明する断面図である。 A manufacturing method of a pressure buffer according to an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a cross-sectional view illustrating an outline of a pressure buffer 10 manufactured by a manufacturing method according to an embodiment of the present invention.
　＜圧力緩衝器１０＞
　圧力緩衝器１０は、本発明の一実施形態に係る圧力緩衝器の製造方法によって製造される圧力緩衝器の一例であり、インクジェット記録装置において、液体をインクタンクからインクジェットヘッドに供給する経路の一部に設けられるものである。液体経路内において、圧力緩衝器１０は、インク容器からインクジェットヘッドに供給される液体の供給圧力の変動を緩衝し、インクジェットヘッドからの液体の吐出量を安定させる。 <Pressure shock absorber 10>
The pressure shock absorber 10 is an example of a pressure shock absorber manufactured by the method for manufacturing a pressure shock absorber according to an embodiment of the present invention. In the ink jet recording apparatus, the pressure shock absorber 10 is a path for supplying liquid from an ink tank to an ink jet head. It is provided in the part. In the liquid path, the pressure buffer 10 buffers fluctuations in the supply pressure of the liquid supplied from the ink container to the inkjet head, and stabilizes the discharge amount of the liquid from the inkjet head.
　圧力緩衝器１０は、図１に示す通り、筐体１、圧力緩衝膜２、圧力室３、弁体４、供給室５、付勢部材６、シール部材７、及び押圧部材８を備えている。 As shown in FIG. 1, the pressure buffer 10 includes a housing 1, a pressure buffer film 2, a pressure chamber 3, a valve body 4, a supply chamber 5, an urging member 6, a seal member 7, and a pressing member 8. .
　筐体１は、その底面に貫通孔１ａが設けられた凹部と、凹部の底面側に隣接し、貫通孔１ａを介して凹部に連通する供給室５とを備えている。凹部の開口面は、圧力緩衝膜２に覆われており、凹部と圧力緩衝膜２とにより圧力室３が形成されている。 The housing 1 includes a recess provided with a through hole 1a on its bottom surface and a supply chamber 5 adjacent to the bottom surface side of the recess and communicating with the recess via the through hole 1a. The opening surface of the recess is covered with the pressure buffer film 2, and the pressure chamber 3 is formed by the recess and the pressure buffer film 2.
　圧力緩衝膜２は、筐体１の凹部を覆うように設けられており、圧力室３内のインクの増減に伴う圧力の変動によって撓む弾性を有している。これによって圧力緩衝膜２は、圧力室３の負圧の増大に伴い筐体１の凹部の底面に近づく方向に変位し、圧力室３内の圧力の増大に伴い筐体１の凹部の底面から離れる方向に変位する。 The pressure buffer film 2 is provided so as to cover the concave portion of the housing 1, and has elasticity that bends due to a change in pressure accompanying an increase or decrease in ink in the pressure chamber 3. As a result, the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess of the housing 1 as the negative pressure of the pressure chamber 3 increases, and from the bottom surface of the recess of the housing 1 as the pressure in the pressure chamber 3 increases. Displaces away.
　なお、圧力緩衝膜２は、コルゲート形状２ａを有している。圧力緩衝膜２にコルゲート形状２ａが設けられていることによって、圧力室３内の圧力が変動したときに、圧力緩衝膜２が変位する方向に付勢力が付与される。すなわち、圧力緩衝膜２にコルゲート形状２ａが設けられていることによって、圧力室３内の圧力変動に伴って、より効果的に圧力緩衝膜２を変位させることができる。このように本発明に係る圧力緩衝器の製造方法に用いられる圧力緩衝膜は、少なくとも一部にコルゲート形状を有していることが好ましい。 Note that the pressure buffer film 2 has a corrugated shape 2a. By providing the corrugated shape 2a on the pressure buffer film 2, when the pressure in the pressure chamber 3 fluctuates, an urging force is applied in the direction in which the pressure buffer film 2 is displaced. That is, by providing the corrugated shape 2 a in the pressure buffer film 2, the pressure buffer film 2 can be displaced more effectively with the pressure fluctuation in the pressure chamber 3. Thus, it is preferable that the pressure buffer film used in the method for manufacturing a pressure buffer according to the present invention has a corrugated shape at least partially.
　本明細書において、コルゲート形状には、蛇腹形状及び波形形状が含まれ、圧力緩衝膜の弾性力を高める形状であることが意図される。図１に示すように、圧力緩衝膜２の厚さ方向の断面において、コルゲート形状２ａが形成されている部分は、波形形状である。また、圧力緩衝膜２を上面から見たとき、当該波形形状の山折り線と谷折り線とが、同心形状を形成するように設けられていてもよい。なお、圧力緩衝膜２により均一に付勢力を付与するという観点から、コルゲート形状２ａは、圧力緩衝膜２を上面から見たときに、波形形状の山折り線と谷折り線とが同心円を形成するように設けられていることがより好ましい。 In this specification, the corrugated shape includes a bellows shape and a corrugated shape, and is intended to be a shape that enhances the elastic force of the pressure buffer film. As shown in FIG. 1, in the cross section in the thickness direction of the pressure buffer film 2, the portion where the corrugated shape 2 a is formed has a waveform shape. Further, when the pressure buffer film 2 is viewed from above, the corrugated mountain fold line and valley fold line may be provided so as to form a concentric shape. From the viewpoint of uniformly applying a biasing force to the pressure buffer film 2, the corrugated shape 2 a has a concentric circle formed by corrugated mountain fold lines and valley fold lines when the pressure buffer film 2 is viewed from above. More preferably, it is provided.
　圧力室３は、筐体１が有している凹部を圧力緩衝膜２が覆うことにより形成された空間である。圧力室３の内部は液体が貯留できるようになっている。圧力室３の側面には、貫通孔１ｃが設けられており、貫通孔１ｃを介して、インクジェットヘッド（図示せず）に連通している。そして、貫通孔１ａを介して圧力室３に供給された液体が、貫通孔１ｃを介してインクジェットヘッドに供給される。 The pressure chamber 3 is a space formed by covering the concave portion of the housing 1 with the pressure buffer film 2. The inside of the pressure chamber 3 can store liquid. A through hole 1c is provided on the side surface of the pressure chamber 3, and communicates with an ink jet head (not shown) through the through hole 1c. Then, the liquid supplied to the pressure chamber 3 through the through hole 1a is supplied to the inkjet head through the through hole 1c.
　弁体４は、貫通孔１ａを貫いて圧力室３内から供給室５内まで延伸するように設けられており、圧力室３内のインクの増減に伴う圧力の変動による圧力緩衝膜２の変位に伴って、貫通孔１ａを開閉するようになっている。弁体４は、供給室５側の位置に突起形状を有しており、供給室５の貫通孔１ａに連通する壁面に当該突起形状が当接することによって、貫通孔１ａを塞ぎ、当該壁面から当該突起形状が離れることにより、貫通孔１ａを開放するように構成することができる。 The valve body 4 is provided so as to extend from the inside of the pressure chamber 3 to the inside of the supply chamber 5 through the through-hole 1a. Accordingly, the through hole 1a is opened and closed. The valve body 4 has a projection shape at a position on the supply chamber 5 side, and the projection shape comes into contact with the wall surface communicating with the through hole 1a of the supply chamber 5, thereby closing the through hole 1a. By separating the protrusion shape, the through hole 1a can be opened.
　供給室５は、その側面に設けられた貫通孔１ｂを介してインクチューブ又はインク容器（図示せず）に連通している。これにより、インクチューブ又はインク容器からの液体が貫通孔１ｂを介して供給室５に供給される。そして、供給室５に供給された液体は、貫通孔１ａを介して圧力室３に供給される。 The supply chamber 5 communicates with an ink tube or an ink container (not shown) through a through hole 1b provided on the side surface. Thereby, the liquid from an ink tube or an ink container is supplied to the supply chamber 5 through the through-hole 1b. And the liquid supplied to the supply chamber 5 is supplied to the pressure chamber 3 through the through-hole 1a.
　付勢部材６は、供給室５において貫通孔１ａに連通する面に対向する面に設置されており、弁体４に貫通孔１ａを塞ぐ方向の付勢力を付与する。付勢部材６は、弁体４に対して、圧力緩衝膜２の変位により弁体４に付与される付勢力とは反対方向の付勢力を付与する。付勢部材６としては、バネ等を用いることができる。 The urging member 6 is installed on a surface of the supply chamber 5 that faces the surface that communicates with the through hole 1a, and applies an urging force to the valve body 4 in the direction of closing the through hole 1a. The urging member 6 applies an urging force in a direction opposite to the urging force applied to the valve body 4 by the displacement of the pressure buffer film 2 to the valve body 4. As the urging member 6, a spring or the like can be used.
　シール部材７は、供給室５側において貫通孔１ａの開口部を囲うように配置され、弁体の突起形状部分が供給室５の壁面に当接したときに、弁体４と供給室５との間に位置し、これらの間を密閉する。シール部材７としては、例えば、ゴム、シリコーン等によって形成されたＯリング又はパッキン等を用いることができる。 The seal member 7 is disposed so as to surround the opening of the through hole 1a on the supply chamber 5 side, and when the protruding portion of the valve body comes into contact with the wall surface of the supply chamber 5, the valve body 4 and the supply chamber 5 It is located between and seals between these. As the seal member 7, for example, an O-ring or packing formed of rubber, silicone or the like can be used.
　押圧部材８は、圧力緩衝膜２の圧力室３に面する側に設けられている。押圧部材８は、圧力緩衝膜２が凹部の底面に近づく方向に変位した時に、弁体４に当接し、弁体４を押圧する。圧力緩衝膜２に押圧部材８を設けることによって、圧力緩衝膜２が凹部の底面に近づく方向に変位するときに、圧力緩衝膜２が直接弁体４に当接して撓むことを防止できる。このため、押圧部材８は、圧力緩衝膜２の付勢力によって弁体４を好適に押圧することができる。 The pressing member 8 is provided on the side of the pressure buffer film 2 facing the pressure chamber 3. The pressing member 8 contacts the valve body 4 and presses the valve body 4 when the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess. By providing the pressing member 8 on the pressure buffer film 2, it is possible to prevent the pressure buffer film 2 from directly contacting the valve body 4 and bending when the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess. For this reason, the pressing member 8 can suitably press the valve body 4 by the urging force of the pressure buffer film 2.
　（圧力緩衝器１０の動作）
　本発明の一実施形態に係る圧力緩衝器１０の動作の概略を説明する。貫通孔１ｃを介して圧力室３内の液体がインクジェットヘッドに供給されると、液体の減少に伴い圧力室３内の負圧が増大する。これによって、圧力緩衝膜２が筐体１の凹部の底面に近づく方向に変位し、押圧部材８が弁体４に当接し、弁体４を押圧する。弁体４に対する圧力緩衝膜２の付勢力が付勢部材６の付勢力より大きくなると、弁体４は貫通孔１ａを開く方向に変位する。これにより、供給室５内の液体が貫通孔１ａを介して圧力室３に流入する。 (Operation of pressure buffer 10)
An outline of the operation of the pressure shock absorber 10 according to one embodiment of the present invention will be described. When the liquid in the pressure chamber 3 is supplied to the inkjet head through the through hole 1c, the negative pressure in the pressure chamber 3 increases as the liquid decreases. As a result, the pressure buffer film 2 is displaced in a direction approaching the bottom surface of the recess of the housing 1, and the pressing member 8 contacts the valve body 4 to press the valve body 4. When the urging force of the pressure buffer film 2 against the valve body 4 becomes larger than the urging force of the urging member 6, the valve body 4 is displaced in the direction of opening the through hole 1a. Thereby, the liquid in the supply chamber 5 flows into the pressure chamber 3 through the through hole 1a.
　圧力室３に液体が流入すると、圧力室３内の圧力が増大する。これにより、圧力緩衝膜２は凹部の底面から離れる方向に変位する。これにより、圧力緩衝膜２の付勢力が付勢部材６の付勢力より小さくなると、弁体４は貫通孔１ａを閉じる方向に変位する。これにより供給室５から圧力室３への液体の流入が停止する。 When the liquid flows into the pressure chamber 3, the pressure in the pressure chamber 3 increases. Thereby, the pressure buffer film 2 is displaced in a direction away from the bottom surface of the recess. Thereby, when the urging force of the pressure buffer film 2 becomes smaller than the urging force of the urging member 6, the valve body 4 is displaced in the direction of closing the through hole 1a. Thereby, the inflow of the liquid from the supply chamber 5 to the pressure chamber 3 is stopped.
　これら一連の動作によって、圧力緩衝器１０は、インクチューブ又はインク容器からインクジェットヘッドに供給される液体の供給圧力の変動を緩衝することができる。従って、インクジェットヘッドから安定した量の液体を吐出することができる。 Through these series of operations, the pressure buffer 10 can buffer fluctuations in the supply pressure of the liquid supplied from the ink tube or the ink container to the inkjet head. Therefore, a stable amount of liquid can be discharged from the inkjet head.
　＜圧力緩衝器の製造方法＞
　図２を参照して、本発明の一実施形態に係る圧力緩衝器の製造方法を説明する。図２は、本発明の一実施形態に係る製造方法の概略を説明する模式図である。 <Manufacturing method of pressure buffer>
With reference to FIG. 2, the manufacturing method of the pressure buffer which concerns on one Embodiment of this invention is demonstrated. FIG. 2 is a schematic diagram for explaining the outline of the manufacturing method according to one embodiment of the present invention.
　図２に示す通り、本発明の一実施形態に係る圧力緩衝器の製造方法は、凹部を有する筐体１と、当該凹部を覆うための圧力緩衝膜２とにより形成された圧力室３を備える圧力緩衝器１０の製造方法であって、筐体１と、押さえ板（押さえ部材）９との間に、圧力緩衝膜２を挟持する挟持工程（図２の（ａ）及び（ｂ））と、筐体１と圧力緩衝膜２との接触面に、押さえ板９を介してレーザ光を照射して、筐体１と圧力緩衝膜２を接合する接合工程（図２の（ｃ）及び（ｄ））とを包含している。 As shown in FIG. 2, the manufacturing method of the pressure buffer which concerns on one Embodiment of this invention is equipped with the pressure chamber 3 formed of the housing | casing 1 which has a recessed part, and the pressure buffer film 2 for covering the said recessed part. A method of manufacturing the pressure shock absorber 10, a sandwiching step ((a) and (b) in FIG. 2) for sandwiching the pressure buffer film 2 between the housing 1 and a press plate (press member) 9. 2, the contact surface between the housing 1 and the pressure buffer film 2 is irradiated with laser light through the pressing plate 9 to join the housing 1 and the pressure buffer film 2 (FIG. 2 (c) and ( d)).
　このように、レーザ光を照射することによって筐体１と圧力緩衝膜２との接触面に熱を発生させることができる。このため、熱プレス溶着による接合方法のように、圧力緩衝膜２と熱プレス治具の接触面から圧力緩衝膜２を過度に加熱することなく、筐体１と圧力緩衝膜２とを接合することができる。従って、筐体１と圧力緩衝膜２とを接合するときに圧力緩衝膜２の皺及び剥れといった不良の発生を抑えることができる。 Thus, heat can be generated on the contact surface between the casing 1 and the pressure buffer film 2 by irradiating the laser beam. For this reason, the housing | casing 1 and the pressure buffer film 2 are joined, without heating the pressure buffer film 2 excessively from the contact surface of the pressure buffer film 2 and a hot press jig | tool like the joining method by hot press welding. be able to. Therefore, it is possible to suppress the occurrence of defects such as wrinkles and peeling of the pressure buffer film 2 when the casing 1 and the pressure buffer film 2 are joined.
　また、圧力緩衝膜２の形状を維持し、弾性を確保するために、圧力緩衝膜２を厚くした場合でも、筐体１と圧力緩衝膜２との接触面を効率よく加熱することができるため、溶着不良が生じにくく、かつ、圧力緩衝膜２の形状が崩れて弾性が劣化することを防ぐことができる。 Further, in order to maintain the shape of the pressure buffer film 2 and ensure elasticity, even when the pressure buffer film 2 is thickened, the contact surface between the housing 1 and the pressure buffer film 2 can be efficiently heated. Further, it is difficult to cause poor welding, and it is possible to prevent the shape of the pressure buffer film 2 from being broken and the elasticity from being deteriorated.
　さらに、接合するときに振動によって摩擦を生じないため、筐体１と圧力緩衝膜２との樹脂から粉塵を生成することがない。このため、内部に異物を混入させることなく圧力緩衝器１０を製造することができる。 Furthermore, since friction is not generated by vibration when joining, dust is not generated from the resin of the housing 1 and the pressure buffer film 2. For this reason, the pressure buffer 10 can be manufactured without mixing foreign matter inside.
　本発明の一実施形態における圧力緩衝器の製造方法で用いる、圧力緩衝膜２、筐体１、及び、押さえ板９について以下に説明する。 The pressure buffer film 2, the casing 1, and the pressing plate 9 used in the method for manufacturing a pressure shock absorber according to an embodiment of the present invention will be described below.
　（圧力緩衝膜２）
　本発明の一実施形態に係る圧力緩衝器の製造方法においては、厚さ３０μｍ以上２０００μｍ以下の圧力緩衝膜２を用いてもよい。 (Pressure buffer membrane 2)
In the manufacturing method of the pressure buffer according to the embodiment of the present invention, the pressure buffer film 2 having a thickness of 30 μm or more and 2000 μm or less may be used.
　圧力緩衝膜２の厚さを上記の範囲内とした場合でも、レーザ光により圧力緩衝膜と筐体との接触面を加熱することができるので、圧力緩衝膜２を過度に加熱する必要がなく、熱ムラによる圧力緩衝膜２の変形を抑えることができる。従って、圧力緩衝膜２が厚くても、圧力緩衝器１０の製造において不良品の発生を抑えることができ、歩留りよく圧力緩衝器１０を製造することができる。 Even when the thickness of the pressure buffer film 2 is within the above range, the contact surface between the pressure buffer film and the housing can be heated by the laser beam, so there is no need to heat the pressure buffer film 2 excessively. Further, deformation of the pressure buffer film 2 due to heat unevenness can be suppressed. Therefore, even if the pressure buffer film 2 is thick, the production of the pressure buffer 10 can suppress the occurrence of defective products, and the pressure buffer 10 can be manufactured with high yield.
　また、膜厚が上記の範囲内より薄い場合よりも圧力緩衝膜２の材料が有している材料的な特性を十分に生かすことができる。つまり、圧力緩衝膜２の形状を維持し、弾性を確保するために、圧力緩衝膜２を厚くしても、筐体１に確実に接合することができる。 Further, the material characteristics of the material of the pressure buffer film 2 can be fully utilized as compared with the case where the film thickness is thinner than the above range. That is, in order to maintain the shape of the pressure buffer film 2 and ensure elasticity, the pressure buffer film 2 can be reliably bonded to the housing 1 even if the pressure buffer film 2 is thick.
　また、本発明の一実施形態に係る圧力緩衝器の製造方法では、圧力緩衝膜２は、コルゲート形状２ａを有している。 Moreover, in the manufacturing method of the pressure buffer according to the embodiment of the present invention, the pressure buffer film 2 has a corrugated shape 2a.
　コルゲート形状等の形状は、圧力緩衝膜が薄いと形成しづらいため、このような形状を形成する圧力緩衝膜は、厚くする必要がある。上述の通り、本発明の一実施形態に係る圧力緩衝器１０の製造方法では、厚い圧力緩衝膜２であっても、好適に筐体１に接合することができる。よって、コルゲート形状等の形状が形成されている圧力緩衝膜２であっても、好適に筐体１に接合することができる。 Since the shape such as the corrugated shape is difficult to form when the pressure buffer film is thin, the pressure buffer film forming such a shape needs to be thick. As described above, in the method for manufacturing the pressure shock absorber 10 according to the embodiment of the present invention, even the thick pressure buffer film 2 can be suitably joined to the housing 1. Therefore, even the pressure buffer film 2 having a corrugated shape or the like can be suitably joined to the housing 1.
　また、熱プレス溶着による接合のように、圧力緩衝膜２を過度に加熱する必要がないため、圧力緩衝膜２に形成されたコルゲート形状２ａを熱により変形させることがない。 Further, unlike the joining by hot press welding, it is not necessary to heat the pressure buffer film 2 excessively, so that the corrugated shape 2a formed on the pressure buffer film 2 is not deformed by heat.
　圧力緩衝膜２は、ポリエチレン及びポリプロピレンなどのポリオレフィン、ポリエステル、メタアクリル樹脂、ポリスチレン、並びに、ポリ塩化ビニリデンなどの材料を用いて成型することができる。また、異なる材料を含んだ複数の層を積層させたシートを用いて成型することもできる。例えば、耐溶剤性の高いポリオレフィンを含む層とガスバリア性の高いエチレン－ビニルアルコール共重合体、ナイロン及びポリ塩化ビニリデンなどを含む層とを積層させたシートを用いて圧力緩衝膜２を成型してもよい。 The pressure buffer film 2 can be molded using a material such as polyolefin such as polyethylene and polypropylene, polyester, methacrylic resin, polystyrene, and polyvinylidene chloride. Moreover, it can also shape | mold using the sheet | seat which laminated | stacked the several layer containing a different material. For example, the pressure buffer film 2 is molded by using a sheet in which a layer containing polyolefin having high solvent resistance and a layer containing ethylene-vinyl alcohol copolymer, nylon, polyvinylidene chloride, etc. having high gas barrier properties are laminated. Also good.
　なお、本発明の一実施形態に係る圧力緩衝器の製造方法では、レーザ光の少なくとも一部を透過する圧力緩衝膜２を用いることが好ましい。圧力緩衝膜２がレーザ光の少なくとも一部を透過することによって、圧力緩衝膜２に吸収されずに透過したレーザ光が、筐体１と圧力緩衝膜２との接触面に好適に照射される。このため、効率よく、圧力緩衝膜２と筐体１とを接合することができる。また、圧力緩衝膜２がレーザ光によって過度に加熱されることを防止することができる。 In addition, in the manufacturing method of the pressure buffer which concerns on one Embodiment of this invention, it is preferable to use the pressure buffer film 2 which permeate | transmits at least one part of a laser beam. When the pressure buffer film 2 transmits at least a part of the laser light, the laser light transmitted without being absorbed by the pressure buffer film 2 is suitably applied to the contact surface between the housing 1 and the pressure buffer film 2. . For this reason, the pressure buffer film 2 and the housing | casing 1 can be joined efficiently. Further, the pressure buffer film 2 can be prevented from being excessively heated by the laser light.
　（筐体１）
　本発明の一実施形態に係る圧力緩衝器の製造方法において、筐体１としては、ポリエチレン及びポリプロピレンなどのポリオレフィンなどにより形成されたものを用いることができる。 (Case 1)
In the method for manufacturing a pressure shock absorber according to an embodiment of the present invention, the housing 1 may be formed of polyolefin such as polyethylene and polypropylene.
　また筐体１は、圧力緩衝膜２と同一の材料により形成されていてもよい。ここで、レーザ光に対する透明度が高い圧力緩衝膜２と、レーザ光に対する透明度が圧力緩衝膜２より低い筐体１とを同一の材料により形成することによって、圧力緩衝膜２と筐体１とは、レーザ光の照射によって溶着しやすくなる。従って、筐体１と圧力緩衝膜２とを速やかにかつ確実に接合することができるようになる。 The housing 1 may be formed of the same material as the pressure buffer film 2. Here, the pressure buffer film 2 and the housing 1 are formed by forming the pressure buffer film 2 having a high transparency with respect to the laser light and the housing 1 having a transparency with respect to the laser light lower than that of the pressure buffer film 2 from the same material. It becomes easy to weld by laser light irradiation. Therefore, the housing 1 and the pressure buffer film 2 can be joined quickly and reliably.
　また、筐体１は、着色されていることが好ましい。筐体１は、染料又は顔料などの種々の着色剤によって着色するとよい。筐体１を着色することによって、筐体１はレーザ光を吸収しやすくなる。なお、筐体１を着色する色は特に限定されないが、黒色であることが特に好ましい。筐体１を黒色に着色することによって、より好適に筐体１にレーザ光を吸収させることができる。 Further, the casing 1 is preferably colored. The housing 1 may be colored with various colorants such as dyes or pigments. By coloring the housing 1, the housing 1 can easily absorb laser light. In addition, although the color which colors the housing | casing 1 is not specifically limited, It is especially preferable that it is black. By coloring the housing 1 black, the housing 1 can be more suitably absorbed by the laser light.
　圧力緩衝膜２がレーザ光の少なくとも一部を透過するようになっており、筐体１が着色されている場合、筐体１が圧力緩衝膜２よりもレーザ光を吸収しやすくすることができる。このため、筐体１と圧力緩衝膜２と接触面においてレーザ光の照射による熱が発生しやすくなる。従って、圧力緩衝膜２に過度に熱を加えることなく、圧力緩衝膜２と筐体１とを接合することができる。また、例えば、圧力緩衝膜２にポリエチレンを用い、筐体１にポリエチレンより融点の高いポリプロピレンを用いた場合でも、着色された筐体１の方がレーザ光の照射によって熱を生じ易くなっているため、圧力緩衝膜２に過度に熱を加えることなく圧力緩衝膜２と筐体１とを接合することができる。 When the pressure buffer film 2 transmits at least part of the laser light and the housing 1 is colored, the housing 1 can absorb the laser light more easily than the pressure buffer film 2. . For this reason, the heat | fever by irradiation of a laser beam becomes easy to generate | occur | produce in the housing | casing 1, the pressure buffer film 2, and a contact surface. Therefore, the pressure buffer film 2 and the housing 1 can be joined without excessively applying heat to the pressure buffer film 2. Further, for example, even when polyethylene is used for the pressure buffer film 2 and polypropylene having a melting point higher than that of polyethylene is used for the casing 1, the colored casing 1 is more likely to generate heat by laser light irradiation. Therefore, the pressure buffer film 2 and the housing 1 can be joined without excessively applying heat to the pressure buffer film 2.
　また、筐体１と圧力緩衝膜２との接合面の幅は、０．５ｍｍ以上１．０ｍｍ以下の範囲内であってもよい。本発明の一実施形態に係る圧力緩衝器の製造方法では、熱プレス溶着のように過度の熱を生じることがない。このため、厚さが３０μｍ以上２０００μｍ以下（０．０３ｍｍ以上０．２ｍｍ以下）の圧力緩衝膜２を０．５ｍｍ以上１０ｍｍ以下の幅の筐体１の接合面に、好適に接合することができる。 Further, the width of the joint surface between the housing 1 and the pressure buffer film 2 may be in the range of 0.5 mm to 1.0 mm. In the manufacturing method of the pressure buffer which concerns on one Embodiment of this invention, an excessive heat | fever is not produced like hot press welding. For this reason, the pressure buffer film 2 having a thickness of 30 μm or more and 2000 μm or less (0.03 mm or more and 0.2 mm or less) can be suitably bonded to the bonding surface of the casing 1 having a width of 0.5 mm or more and 10 mm or less. .
　（押さえ板９）
　押さえ板９は、筐体１の凹部を覆うように載置された圧力緩衝膜２を、筐体１との間に挟持する部材である。これによって、圧力緩衝膜２は筐体１に接触する位置に固定される。また、後の接合工程において、圧力緩衝膜２と筐体１との接着面に隙間ができないように押さえることができる。これによって、後の接合工程において、圧力緩衝膜２と筐体１との接合不良を防ぐことができる。 (Presser plate 9)
The holding plate 9 is a member that sandwiches the pressure buffer film 2 placed so as to cover the concave portion of the housing 1 with the housing 1. Thus, the pressure buffer film 2 is fixed at a position in contact with the housing 1. Further, in the subsequent bonding step, it is possible to hold the adhesive buffer surface 2 and the housing 1 so that there is no gap between them. Accordingly, it is possible to prevent a bonding failure between the pressure buffer film 2 and the housing 1 in the subsequent bonding step.
　押さえ板９は、圧力緩衝膜２と筐体１とを接合するためのレーザ光を透過する材料により形成されていればよい。このような材料として、石英ガラスなどの耐熱ガラス及びパイレックス（登録商標）などが挙げられる。レーザ光を透過する材料により形成された押さえ板９を用いることによって、圧力緩衝膜２を筐体１上に固定しつつ、押さえ板９を介して圧力緩衝膜２と筐体１との接触面にレーザ光を照射することができる。 The pressing plate 9 may be formed of a material that transmits laser light for joining the pressure buffer film 2 and the housing 1. Examples of such a material include heat-resistant glass such as quartz glass and Pyrex (registered trademark). By using the presser plate 9 formed of a material that transmits laser light, the pressure buffer film 2 is fixed on the housing 1, and the contact surface between the pressure buffer film 2 and the housing 1 through the presser plate 9. Can be irradiated with laser light.
　ここで、押さえ板９はレーザ光を透過するため、レーザ光により過度に加熱されない。したがって、押さえ板９の熱によって、押さえ板９と圧力緩衝膜２とが接合することはない。このため、圧力緩衝膜２と押さえ板９との接合を防止するために、圧力緩衝膜２の押さえ板９に接する側の面に、ポリテトラフルオロエチレン（ＰＴＦＥ）シート等の離型性のよいシート、又は、ポリエチレンテレフタレート（ＰＥＴ）シートのような融点の高いシートをラミネート加工によって備えておく必要がない。 Here, since the holding plate 9 transmits laser light, it is not heated excessively by the laser light. Therefore, the presser plate 9 and the pressure buffer film 2 are not joined by the heat of the presser plate 9. For this reason, in order to prevent the bonding between the pressure buffer film 2 and the pressing plate 9, the surface of the pressure buffer film 2 on the side in contact with the pressing plate 9 has a good releasability such as a polytetrafluoroethylene (PTFE) sheet. It is not necessary to prepare a sheet or a sheet having a high melting point such as a polyethylene terephthalate (PET) sheet by laminating.
　〔挟持工程〕
　図２の（ａ）及び（ｂ）は、本発明の一実施形態に係る圧力緩衝器の製造方法に包含される挟持工程について説明する模式図である。ここで、図２の（ａ）は、圧力緩衝膜２を筐体１と押さえ板９との間に配置して、挟持する前の状態を説明する図であり、図２の（ｂ）は、圧力緩衝膜２が、筐体１と押さえ板９とによって挟持された状態を説明する図である。 [Clamping process]
FIGS. 2A and 2B are schematic views illustrating a clamping step included in the method for manufacturing a pressure shock absorber according to one embodiment of the present invention. Here, (a) in FIG. 2 is a diagram for explaining a state before the pressure buffer film 2 is disposed between the casing 1 and the pressing plate 9 and sandwiched, and (b) in FIG. FIG. 6 is a diagram for explaining a state in which the pressure buffer film 2 is sandwiched between the housing 1 and the pressing plate 9.
　挟持工程は、筐体１の凹部を覆うように筐体１上に載置された圧力緩衝膜２を、押さえ板９と筐体１との間に挟持する工程である。まず、筐体１を、凹部が上を向くように配置する。そして、圧力緩衝膜２を、筐体１の凹部を覆うように、筐体１上に配置する（図２の（ａ））。次に、押さえ板９を、筐体１と圧力緩衝膜２との位置がずれないように、圧力緩衝膜２上に配置し、筐体１と押さえ板９との間に圧力緩衝膜２を挟持する（図２の（ｂ））。 The sandwiching step is a step of sandwiching the pressure buffer film 2 placed on the housing 1 so as to cover the concave portion of the housing 1 between the pressing plate 9 and the housing 1. First, the housing 1 is arranged so that the concave portion faces upward. And the pressure buffer film 2 is arrange | positioned on the housing | casing 1 so that the recessed part of the housing | casing 1 may be covered ((a) of FIG. 2). Next, the pressure plate 9 is disposed on the pressure buffer film 2 so that the positions of the case 1 and the pressure buffer film 2 do not shift, and the pressure buffer film 2 is interposed between the case 1 and the pressure plate 9. Holding is performed ((b) in FIG. 2).
　〔接合工程〕
　図２の（ｃ）及び（ｄ）は、本発明の一実施形態に係る圧力緩衝器の製造方法に包含される接合工程を説明する模式図である。ここで、図２の（ｃ）は、筐体１と圧力緩衝膜２との接合面に押さえ板９を介してレーザ光を照射している状態を説明する図であり、図２の（ｄ）は、レーザ光の照射後、押さえ板９を圧力緩衝器１０から取り外した状態を説明する図である。 [Jointing process]
(C) and (d) of Drawing 2 is a mimetic diagram explaining a joining process included in a manufacturing method of a pressure buffer concerning one embodiment of the present invention. Here, (c) of FIG. 2 is a diagram for explaining a state in which the joining surface between the casing 1 and the pressure buffer film 2 is irradiated with laser light through the presser plate 9, and (d) of FIG. ) Is a diagram illustrating a state in which the presser plate 9 is removed from the pressure buffer 10 after the laser light irradiation.
　接合工程は、筐体１と押さえ板９との間に圧力緩衝膜２を挟持した状態で、筐体１と圧力緩衝膜２との接触面に押さえ板９を介してレーザ光を照射して、筐体１と圧力緩衝膜２を接合する工程である。 In the bonding step, the pressure buffer film 2 is sandwiched between the housing 1 and the presser plate 9, and the contact surface between the housing 1 and the pressure buffer film 2 is irradiated with laser light through the presser plate 9. In this step, the casing 1 and the pressure buffer film 2 are joined.
　接合工程において照射するレーザ光は、単軸光であってもよいが、複数軸又は帯状のレーザ光によって照射してもよい。複数軸又は帯状のレーザ光を照射することによって、一度にレーザ光を照射できる面積を広くすることができ、効率的にレーザ光を照射することができる。 The laser light irradiated in the bonding step may be uniaxial light, but may be irradiated with multi-axis or belt-shaped laser light. By irradiating laser beams having a plurality of axes or strips, the area that can be irradiated with laser light at a time can be increased, and laser light can be irradiated efficiently.
　接合工程におけるレーザ光の照射時間は、筐体１と圧力緩衝膜２とを好適に接合できるように調整すればよいが、０．０５秒以上１０秒以下の範囲内であることが好ましい。 The irradiation time of the laser beam in the bonding process may be adjusted so that the housing 1 and the pressure buffer film 2 can be bonded appropriately, but is preferably in the range of 0.05 seconds to 10 seconds.
　接合工程におけるレーザ光の照射は、例えば、筐体１と押さえ板９との間に圧力緩衝膜２を挟持したものを移動させながら行ってもよい。この場合、筐体１と押さえ板９との間に圧力緩衝膜２を挟持したものの移動速度を調整することによって、レーザ光の照射時間を調整することができる。これによって、熱プレスによる溶着方法よりも短時間で筐体１と圧力緩衝膜２とを接合することができる。 The irradiation of the laser beam in the joining step may be performed, for example, while moving a material sandwiching the pressure buffer film 2 between the housing 1 and the pressing plate 9. In this case, the irradiation time of the laser beam can be adjusted by adjusting the moving speed of the pressure buffer film 2 sandwiched between the housing 1 and the pressing plate 9. Thereby, the housing | casing 1 and the pressure buffer film 2 can be joined in a short time rather than the welding method by a hot press.
　また、本発明の一実施形態に係る圧力緩衝器の製造方法では、接合工程において照射するレーザ光の波長は、７００ｎｍ以上１２０００ｎｍ以下であることが好ましい。これによって、筐体１と圧力緩衝膜２との接触面に好適にレーザ光を照射することができる。 Further, in the method for manufacturing a pressure buffer according to one embodiment of the present invention, the wavelength of the laser light irradiated in the bonding step is preferably 700 nm or more and 12000 nm or less. As a result, it is possible to suitably irradiate the contact surface between the housing 1 and the pressure buffer film 2 with laser light.
　また、レーザ光の出力については、レーザ光の照射時間、並びに、筐体１及び圧力緩衝膜２の材料の融点などを考慮して適宜調整すればよい。 Further, the output of the laser beam may be appropriately adjusted in consideration of the irradiation time of the laser beam and the melting points of the materials of the housing 1 and the pressure buffer film 2.
　筐体１と圧力緩衝膜２との接触面に押さえ板９を介してレーザ光を照射した後、押さえ板９を取り外すことによって接合工程は完了する（図２の（ｄ））。 After irradiating the contact surface between the housing 1 and the pressure buffer film 2 with a laser beam through the pressing plate 9, the bonding step is completed by removing the pressing plate 9 ((d) in FIG. 2).
　〔付記事項〕
　圧力緩衝器１０の製造方法は、凹部を有する筐体１と、当該凹部を覆うための圧力緩衝膜２とにより形成された圧力室３を備える圧力緩衝器１０の製造方法であって、筐体１と、押さえ板（押さえ部材）９との間に、圧力緩衝膜２を挟持する挟持工程と、筐体１と圧力緩衝膜２との接触面に、押さえ板９を介してレーザ光を照射して、筐体１と圧力緩衝膜２を接合する接合工程とを包含している。 [Additional Notes]
The manufacturing method of the pressure shock absorber 10 is a manufacturing method of the pressure shock absorber 10 including the pressure chamber 3 formed by the housing 1 having a recess and the pressure buffer film 2 for covering the recess. 1 and a pressing plate (pressing member) 9, and a laser beam is applied to the contact surface between the housing 1 and the pressure buffering film 2 via the pressing plate 9. And the joining process which joins the housing | casing 1 and the pressure buffer film 2 is included.
　上記構成によれば、透明な樹脂層側からレーザ光を照射することによって筐体１と圧力緩衝膜２との接触面に熱を発生させることができるため、熱プレス溶着による接合のように、圧力緩衝膜２を過度に加熱することなく、筐体１と圧力緩衝膜２とを接合することができる。従って、筐体１と圧力緩衝膜２とを接合するときに圧力緩衝膜２の皺及び剥れといった不良の発生を抑えることができる。従って、圧力緩衝器１０を歩留りよく製造することができる。 According to the above configuration, heat can be generated on the contact surface between the casing 1 and the pressure buffer film 2 by irradiating laser light from the transparent resin layer side. The housing 1 and the pressure buffer film 2 can be joined without excessively heating the pressure buffer film 2. Therefore, it is possible to suppress the occurrence of defects such as wrinkles and peeling of the pressure buffer film 2 when the casing 1 and the pressure buffer film 2 are joined. Therefore, the pressure buffer 10 can be manufactured with a high yield.
　また、圧力緩衝膜２の形状を維持し、弾性を確保するために、圧力緩衝膜２を厚くした場合でも、筐体１と圧力緩衝膜２との接触面を効率よく加熱することができるため、溶着不良が生じにくく、かつ、圧力緩衝膜２の形状が崩れて弾性が劣化することを防ぐことができる。 Further, in order to maintain the shape of the pressure buffer film 2 and ensure elasticity, even when the pressure buffer film 2 is thickened, the contact surface between the housing 1 and the pressure buffer film 2 can be efficiently heated. Further, it is difficult to cause poor welding, and it is possible to prevent the shape of the pressure buffer film 2 from being broken and the elasticity from being deteriorated.
　さらに、接合するときに振動によって摩擦を生じないため、筐体１と圧力緩衝膜２との樹脂から粉塵を生成することがない。このため、内部に異物を混入させることなく圧力緩衝器１０を製造することができる。 Furthermore, since friction is not generated by vibration when joining, dust is not generated from the resin of the housing 1 and the pressure buffer film 2. For this reason, the pressure buffer 10 can be manufactured without mixing foreign matter inside.
　また、圧力緩衝器１０の製造方法において、圧力緩衝膜２の厚さは、３０μｍ以上２０００μｍ以下である。 Moreover, in the manufacturing method of the pressure buffer 10, the thickness of the pressure buffer film 2 is 30 μm or more and 2000 μm or less.
　上記構成によれば、圧力緩衝膜２の厚さを上記範囲内した場合でも、レーザ光により圧力緩衝膜２と筐体１との接触面を加熱することができるので、圧力緩衝膜２を過度に加熱する必要がなく、熱ムラによる圧力緩衝膜２の変形を抑えることができる。また、形状を維持し、弾性を確保するために厚くした圧力緩衝膜２であっても、その形状及び弾性を維持して筐体１に接合することができる。 According to the above configuration, even when the thickness of the pressure buffer film 2 is within the above range, the contact surface between the pressure buffer film 2 and the housing 1 can be heated by the laser beam. Therefore, the deformation of the pressure buffer film 2 due to heat unevenness can be suppressed. Further, even if the pressure buffer film 2 is thickened to maintain its shape and ensure elasticity, it can be joined to the housing 1 while maintaining its shape and elasticity.
　また、圧力緩衝器１０の製造方法において、圧力緩衝膜２は、少なくとも一部にコルゲート形状２ａを有している。 Moreover, in the manufacturing method of the pressure buffer 10, the pressure buffer film 2 has a corrugated shape 2a at least in part.
　上記構成によれば、過度に圧力緩衝膜２を加熱することがないため、コルゲート形状２ａを有する圧力緩衝膜２を、熱によって変形させることなく筐体１に接合することができる。すなわち、コルゲート形状２ａが維持された圧力緩衝膜２を好適に筐体１に接合することができる。 According to the above configuration, since the pressure buffer film 2 is not excessively heated, the pressure buffer film 2 having the corrugated shape 2a can be joined to the housing 1 without being deformed by heat. That is, the pressure buffer film 2 in which the corrugated shape 2a is maintained can be suitably bonded to the housing 1.
　また、圧力緩衝器１０の製造方法において、上記レーザ光の波長は、７００ｎｍ以上１２０００ｎｍ以下である。 Moreover, in the manufacturing method of the pressure buffer 10, the wavelength of the laser beam is 700 nm or more and 12000 nm or less.
　上記構成によれば、筐体１と圧力緩衝膜２との接触面に好適にレーザ光を照射することができる。 According to the above configuration, the contact surface between the housing 1 and the pressure buffer film 2 can be suitably irradiated with laser light.
　また、圧力緩衝器１０の製造方法において、圧力緩衝膜２と筐体１とは、同一の材料により形成されている。 Further, in the manufacturing method of the pressure shock absorber 10, the pressure buffer film 2 and the housing 1 are formed of the same material.
　上記構成によれば、筐体１と圧力緩衝膜２とは溶着しやすくなる。従って、筐体１と圧力緩衝膜２とを速やかにかつ確実に接合することができる。 According to the above configuration, the casing 1 and the pressure buffer film 2 are easily welded. Therefore, the housing 1 and the pressure buffer film 2 can be joined quickly and reliably.
　また、圧力緩衝器１０において、圧力緩衝膜２は、レーザ光の少なくとも一部を透過する。 Further, in the pressure buffer 10, the pressure buffer film 2 transmits at least a part of the laser light.
　上記構成によれば、圧力緩衝膜２に吸収されずに透過したレーザ光が、筐体１と圧力緩衝膜２との接触面に好適に照射される。このため、効率よく、圧力緩衝膜２と筐体１とを接合することができる。 According to the above configuration, the laser beam that is transmitted without being absorbed by the pressure buffer film 2 is suitably irradiated to the contact surface between the housing 1 and the pressure buffer film 2. For this reason, the pressure buffer film 2 and the housing | casing 1 can be joined efficiently.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.
　本発明は、インクジェット記録装置における圧力緩衝器の製造に利用することができる。 The present invention can be used for manufacturing a pressure buffer in an ink jet recording apparatus.
　　１　　筐体
　　２　　圧力緩衝膜
　　２ａ　コルゲート形状
　　３　　圧力室
　　９　　押さえ板（押さえ部材）
　１０　　圧力緩衝器 DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Pressure buffer film 2a Corrugated shape 3 Pressure chamber 9 Holding plate (pressing member)
10 Pressure buffer

Claims (6)

  1. 　凹部を有する筐体と、当該凹部を覆うための圧力緩衝膜とにより形成された圧力室を備える圧力緩衝器の製造方法であって、
    　上記筐体と、押さえ部材との間に、上記圧力緩衝膜を挟持する挟持工程と、
    　上記筐体と上記圧力緩衝膜との接触面に、上記押さえ部材を介してレーザ光を照射して、上記筐体と上記圧力緩衝膜を接合する接合工程とを包含していることを特徴とする圧力緩衝器の製造方法。     A method of manufacturing a pressure buffer including a pressure chamber formed by a housing having a recess and a pressure buffer film for covering the recess,
    A clamping step of clamping the pressure buffer film between the housing and the pressing member;
    A contact step of irradiating the contact surface between the housing and the pressure buffer film with a laser beam through the pressing member to join the housing and the pressure buffer film; A method for manufacturing a pressure buffer.
  2. 　上記圧力緩衝膜の厚さは、３０μｍ以上２０００μｍ以下であることを特徴とする請求項１に記載の圧力緩衝器の製造方法。 2. The method of manufacturing a pressure buffer according to claim 1, wherein the thickness of the pressure buffer film is 30 μm or more and 2000 μm or less.
  3. 　上記圧力緩衝膜は、少なくとも一部にコルゲート形状を有していることを特徴とする請求項１又は２に記載の圧力緩衝器の製造方法。 3. The method of manufacturing a pressure buffer according to claim 1 or 2, wherein the pressure buffer film has a corrugated shape at least in part.
  4. 　上記レーザ光の波長は、７００ｎｍ以上１２０００ｎｍ以下であることを特徴とする請求項１又は２に記載の圧力緩衝器の製造方法。 The method of manufacturing a pressure buffer according to claim 1 or 2, wherein the wavelength of the laser beam is 700 nm or more and 12000 nm or less.
  5. 　上記圧力緩衝膜と上記筐体とは、同一の材料により形成されていることを特徴とする請求項１又は２に記載の圧力緩衝器の製造方法。 3. The method of manufacturing a pressure shock absorber according to claim 1, wherein the pressure buffer film and the casing are formed of the same material.
  6. 　上記圧力緩衝膜は、レーザ光の少なくとも一部を透過することを特徴とする請求項１又は２に記載に記載の圧力緩衝器の製造方法。 3. The method of manufacturing a pressure buffer according to claim 1, wherein the pressure buffering film transmits at least a part of the laser beam.
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