JP2006159672A - Tool for producing honeycomb panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for producing a honeycomb panel which can carry out covering member attachment/detachment work in a short time and reduce the waste of the used covering member. <P>SOLUTION: The covering member 20 is constituted of a covering sheet 21 which can cover the upper surface of a honeycomb sandwich laminate on a base plate 10, an upper side outer frame member 22 and lower side outer frame member 23 which hold the rim of the covering sheet 21 over its whole circumference. By mounting the covering member 20 on the base plate 10 and sucking air between the base plate 10 and the covering member 20 outside, the covering sheet 21 is pressed downward by the atmospheric pressure to make a honeycomb core CR and each prepreg PR be adhered to each other. After heating, since the covering member 20 is detached from the base plate 10 by returning the pressure between the base plate 10 and the covering member 20 to the atmospheric pressure, the covering member 20 attachment/detachment work can be carried out in a short time, improving the productivity of the honeycomb panel. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a honeycomb panel manufacturing jig used as a structural member of an aircraft, for example.

Conventionally, as a method for manufacturing this type of honeycomb panel, a honeycomb sandwich laminate in which prepregs are superimposed on both sides of a honeycomb core is placed on a base plate, and the upper surface thereof is covered with a sheet-like covering member, It is known that the cover member is pressure-bonded to the honeycomb sandwich laminate by sucking the air between the base plate to the outside, and the honeycomb core and each prepreg are bonded by heat treatment. (For example, refer to Patent Document 1).
JP 2003-340947 A

  By the way, in the manufacturing method described above, when the upper surface of the honeycomb sandwich laminate placed on the base plate is covered with the covering member, the sealing tape is applied to the covering member so that the contact surface between the covering member and the base plate is airtight. It is necessary to adhere the covering member and the sealing tape over the entire circumference after manual application to the base plate over the periphery of the rim, and also when removing the covering member after heating, Since it is necessary to peel off the covering member and the sealing tape over the entire circumference by hand, it takes a long time to attach and detach the covering member, and there is a problem that productivity of the honeycomb panel is lowered.

  In addition, once the covering member is used, it cannot be reused due to deformation of the contact portion with the seal tape or adhesion of the adhesive, and therefore, the used covering member is generated as waste as the honeycomb panel is manufactured. was there.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to allow the covering member to be attached and detached in a short time and to generate waste from the used covering member. There is no need to provide a jig for the manufacture of honeycomb panels.

  In order to achieve the above object, the present invention can cover a base plate on which a honeycomb sandwich laminate formed by laminating surface members on both sides of a honeycomb core can be placed, and a honeycomb sandwich laminate placed on the base plate A honeycomb panel manufacturing jig, wherein the covering member is pressure-bonded to the honeycomb sandwich laminate by sucking air between the covering member and the base plate to the outside. And a flexible covering sheet that can cover the upper surface of the honeycomb sandwich laminate and an outer frame member that supports the periphery of the covering sheet, so that the contact surface between the outer frame member and the base plate is airtight. Is formed.

  Thus, by placing the covering member on the base plate and the honeycomb sandwich laminate on the base plate, the covering member and the base plate come into contact with each other in an airtight manner, and the air between the covering member and the base plate Can be pressure-bonded to the honeycomb sandwich laminate. Further, since the covering member can be detached from the base plate by putting air between the covering member and the base plate, the attaching / detaching operation of the covering member can be performed in a short time. Furthermore, since it is not necessary to apply unnecessary force to the outer frame member and the covering sheet when performing the attaching and detaching operation of the covering member, the outer frame member and the covering sheet are not deformed and the covering member cannot be used. The covering member can be used repeatedly.

  According to the present invention, since the attaching / detaching operation of the covering member can be performed in a short time, the productivity of the honeycomb panel can be improved. Further, since the covering member can be used repeatedly, waste due to the used covering member is not generated with the manufacture of the honeycomb panel, and the cost and man-hours required for the disposal of the waste can be reduced. .

  1 to 7 show an embodiment of the present invention. FIG. 1 is a perspective view of a manufacturing jig showing a state before the honeycomb sandwich laminate is coated, and FIG. 2 is a perspective view of components of the covering member. 3 is a plan view of a manufacturing jig showing a state in which the honeycomb sandwich laminate is coated, FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 5 is a view between the covering member and the base plate in FIG. 6 is a side sectional view of the manufacturing jig showing a state in which the air is sucked to the outside, FIG. 6 is a side sectional view of the main part showing the bolt fastening portion between the upper outer frame member and the lower outer frame member, and FIG. It is principal part side surface sectional drawing which shows the attachment part.

  The honeycomb panel manufacturing jig of the present embodiment includes a base plate 10 on which a honeycomb sandwich laminate in which prepregs PR as surface members are laminated on both surfaces of a honeycomb core CR can be placed, and a honeycomb laminated on the base plate 10 And a covering member 20 capable of covering the sandwich laminate.

  The base plate 10 is a flat plate member made of a metal material, and a seal member 11 is provided on the upper surface. The seal member 11 is made of a foamed elastic body in which internal bubbles such as foamed silicon are independent from each other. The seal member 11 is formed in a rectangular cross section and is attached to the upper surface of the base plate 10 in a rectangular shape.

  The covering member 20 includes a covering sheet 21 that covers the upper surface of the honeycomb sandwich laminate on the base plate 10, and an upper outer frame member 22 and a lower outer frame member that sandwich the periphery of the covering sheet 21 from above and below over the entire circumference. 23.

  The covering sheet 21 is made of a flexible member made of an elastic material having excellent heat resistance such as silicon, and is formed in a rectangular shape. Are provided.

  The upper outer frame member 22 is made of a frame-shaped member made of a metal material, and a plurality of through holes 22a are provided at positions corresponding to the through holes 21a of the cover sheet 21 on the outer peripheral side.

  The lower outer frame member 23 is a frame-shaped member made of a metal material, and a plurality of screw holes 23a are provided at positions corresponding to the respective through holes 21a of the covering sheet 21 on the outer peripheral side. A cylindrical pipe 24 as a hollow member is provided on the inner side of the lower outer frame member 23 over the entire circumference, and the pipe 24 is fixed to the lower outer frame member 23 by welding. The pipe 24 is formed so as to contact the seal member 11 of the base plate 10 over the entire circumference.

  The pipe 24 communicates over the entire circumference, and is provided with three outer intake holes 24 a that communicate with the outside of the lower outer frame member 23, and an inner intake hole 24 b that communicates with the inside of the lower outer frame member 23. Are provided at a plurality of locations at intervals in the circumferential direction of the lower outer frame member 23. In addition, an open / close valve 25 is attached to each outer intake hole 24a by welding. The on-off valve 25 has a known structure including a valve body 25a capable of closing the flow path in the on-off valve 25 and a spring (not shown) that urges the valve body 25a in the closing direction, and is provided at the upper end. The flow path of the on-off valve 25 is opened by pushing down the valve body 25a against the biasing force of the spring.

  The covering sheet 21, the upper outer frame member 22, and the lower outer frame member 23 sandwich the covering sheet 21 between the upper outer frame member 22 and the lower outer frame member 23 as shown in FIG. Bolts 26 are inserted into the through holes 22a and 21a from above the member 22, and the bolts 26 are screwed into the screw holes 23a to be fixed. Accordingly, the covering sheet 21 is sandwiched between the upper outer frame member 22 and the lower outer frame member 23.

  In the manufacturing jig configured as described above, a honeycomb sandwich laminate in which the prepreg PR is laminated on both sides of the honeycomb core CR is placed inside the seal member 11 of the base plate 10, and a covering member is placed thereon. 20 is placed. Here, the operator moves the covering member 20 while holding the outer frame members 22 and 23, and the lower surface of the pipe 24 of the lower outer frame member 23 of the covering member 20 contacts the seal member 11 over the entire circumference. To be placed.

  Next, a well-known vacuum suction device (not shown) is connected to the on-off valve 25 to suck air between the covering member 20 and the base plate 10 to the outside. As a result, as shown in FIG. 5, a pressure difference is generated between the upper surface side and the lower surface side of the covering sheet 21, and the covering sheet 21 is pressed downward by atmospheric pressure and deforms along the shape of the honeycomb sandwich laminate. . Thereby, the covering sheet 21 is pressure-bonded to the upper prepreg PR, and the honeycomb core CR and each prepreg PR are in close contact with each other. At this time, a force is applied downward to the outer frame members 22 and 23 by the covering sheet 21, so that the pipe 24 and the seal member 11 are reliably in contact with each other. Further, the covering sheet 21 is deformed downward between the honeycomb sandwich laminate and the outer frame members 22, 23, and the covering sheet 21 is deformed along the inner shape of the lower outer frame member 23. However, since the inner side of the lower outer frame member 23 is formed by the outer peripheral surface of the pipe 24 and does not have an acute angle portion, the covering sheet 21 is not deformed into an acute angle shape.

  Next, the vacuum suction device is removed from the on-off valve 25, and heat treatment is performed by a heating device (not shown) while maintaining the airtightness between the covering member 20 and the base plate 10, and the honeycomb core CP and each prepreg PR are bonded. To do. After the heat treatment is completed, the valve body 25a of the on-off valve 25 is pushed down to return the pressure between the base plate 10 and the covering member 20 to atmospheric pressure, and the operator holds the outer frame members 22 and 23. The covering member 20 is removed from the base plate 10.

  As described above, according to the honeycomb panel manufacturing jig of the present embodiment, the covering member 20 includes the covering sheet 21 that can cover the upper surface of the honeycomb sandwich laminate on the base plate 10, and the periphery of the covering sheet 21. The upper outer frame member 22 and the lower outer frame member 23 are sandwiched over the entire circumference, and the covering member 20 is placed on the base plate 10 and the air between the base plate 10 and the covering member 20 is exposed to the outside. By sucking, the covering sheet 21 is pressed downward by atmospheric pressure so that the honeycomb core CR and each prepreg PR are in close contact with each other, and after the heat treatment, between the base plate 10 and the covering member 20. Since the covering member 20 is removed from the base plate 10 by returning the pressure to the atmospheric pressure, the attaching and detaching work of the covering member 20 can be performed in a short time, and the productivity of the honeycomb panel can be achieved. It can be improved.

  Also, the attaching / detaching operation of the covering member 20 is performed by the operator holding the outer frame members 22, 23. When the covering member 20 is placed on the base plate 10 and when the covering member 20 is removed from the base plate 10, Since it is not necessary to apply unnecessary force to the outer frame members 22 and 23 and the covering sheet 21, the outer frame members 22 and 23 and the covering sheet 21 are not deformed to make the covering member 20 unusable. 20 can be used repeatedly. Therefore, waste due to the used covering member is not generated with the manufacture of the honeycomb panel, and costs and man-hours required for waste treatment can be reduced.

  Further, since the covering sheet 21 is formed of a flexible member, the covering sheet 21 is deformed along the shape of the honeycomb sandwich laminate by sucking the air between the base plate 10 and the covering member 20 to the outside. The covering sheet 21 can press the entire upper prepreg PR with a uniform force.

  Further, since the covering sheet 21 is formed of an elastic material having excellent heat resistance such as silicon, the covering sheet 21 is not deformed or deteriorated at an early stage due to evacuation or heat treatment, and the covering member 20 is formed over a long period of time. Can be used repeatedly.

  Further, since the covering sheet 21 is sandwiched between the upper outer frame member 22 and the lower outer frame member 23, and the upper outer frame member 22 and the lower outer frame member 23 are fastened by the bolts 26, When the covering sheet 21 deteriorates, only the covering sheet 21 can be replaced, and the outer frame members 22 and 23 can be reused. Furthermore, since the covering sheet 21 can be replaced by attaching and detaching the bolts 26, the replacing operation of the covering sheet 21 can be easily performed.

  Further, since the pipe 24 that communicates the inside and outside of the lower outer frame member 23 is provided on the lower outer frame member 23, the covering member 20 is placed on the base plate 10, Air between the covering member 20 can be sucked to the outside, and the space between the base plate 10 and the covering member 20 can be returned to atmospheric pressure.

  Further, the pipe 24 is provided on the inner side of the lower outer frame member 23 over the entire circumference, the inside of the pipe 24 is communicated over the entire circumference, and the pipe 24 is communicated with the outer side of the lower outer frame member 23. Since three intake holes 24a are provided and inner intake holes 24b communicating with the inside of the lower outer frame member are provided at a plurality of locations at intervals in the circumferential direction of the lower outer frame member 23, all the pipes 24 Supply / exhaust is performed from the periphery, and the work of sucking the air between the base plate 10 and the covering member 20 to the outside and the work of returning to the atmospheric pressure can be performed in a shorter time.

  In addition, since the open / close valve 25 is provided in each outer intake hole 24a of the pipe 24, the air between the base plate 10 and the covering member 20 is sucked by the vacuum suction device, and after the vacuum suction device is removed, the base The airtightness between the plate 10 and the covering member 20 can be maintained.

  Further, since the inner side of the lower outer frame member 23 is formed by the outer peripheral surface of the pipe 24 and the inner side of the lower outer frame member 23 is formed in a curved shape having no acute angle portion, the honeycomb sandwich laminate and each outer frame When the covering sheet 21 is deformed downward between the members 22 and 23, the covering sheet 21 is not deformed into an acute angle, and the covering sheet 21 can be prevented from being locally degraded. In this embodiment, the inner side of the lower outer frame member 23 is formed in a curved shape by the outer peripheral surface of the pipe 24, but a polygonal columnar pipe in which each apex angle of the outer peripheral surface is larger than 90 degrees. Thus, it is also possible to form the inside of the lower outer frame member 23 in a non-acute angle shape having no acute angle portion.

  Further, since the base plate 10 is provided with the sealing member 11 on the upper surface and the pipe 24 of the covering member 20 is in contact with the sealing member 11 over the entire circumference, the base plate 10 and the covering member 20 are airtight. Thus, the airtightness between the base plate 10 and the covering member 20 can be reliably maintained when the heat treatment is performed.

  Furthermore, since the sealing member 11 is formed of a foamed elastic body in which the internal bubbles are independent from each other, the sealing member 11 is excellent in flexibility and restoring force, and further improves the airtightness between the base plate 10 and the covering member 20. Can do.

  In addition, since the seal member 11 is formed of a material having excellent heat resistance such as foamed silicon, the seal member 11 is not deformed or deteriorated at an early stage due to compression or heat treatment accompanying evacuation. Can be used repeatedly.

  In the present embodiment, the covering member 20 is composed of the covering sheet 21 and the outer frame members 22, 23. However, the covering sheet and the outer frame member are made of an elastic material having heat resistance such as silicon. It is also possible to form it integrally.

  Further, in the present embodiment, the pipe 24 is fixed to the inside of the lower outer frame member 23 over the entire circumference by welding, and the pipe 24 is provided with an outer intake hole 24a and an inner intake hole 24b. Although the air between the plate 10 and the covering member 20 is sucked to the outside and the space between the base plate 10 and the covering member 20 is returned to the atmospheric pressure, as shown in FIG. A groove 30a is provided over the entire upper end surface of the lower outer frame member 30 as a hollow member, and at least one outer intake hole (not shown) communicating with the outside of the lower outer frame member 30 is provided in the groove 30a. In addition, inner intake holes 30b communicating with the inner side of the lower outer frame member 30 are provided at a plurality of positions at intervals in the circumferential direction of the lower outer frame member 30, and an opening / closing valve (not shown) is attached to the outer intake hole. May be. In this case as well, the inside of the lower outer frame member 30 is formed in a curved surface having no acute angle portion.

  Thereby, since the upper side of the groove part 30a is closed by the lower surface of the covering sheet 21, the air between the base plate 10 and the covering member 20 is sucked outside through the groove part 30a, and the base plate 10 and the covering member 20 are sucked. Can be returned to atmospheric pressure.

  Furthermore, in the present embodiment, the seal member is attached to the upper surface of the base plate. However, as shown in FIG. 9, the groove portion 30 c is formed on the lower surface of the lower outer frame member 30 over the entire circumference. In addition, the opening edge of the groove portion 30c is narrowly formed, and the seal member 31 is formed over the entire circumference below the groove portion 30c, and the upper surface side of the seal member 31 is inserted into the groove portion 30c and locked with the opening edge. By doing so, the sealing member 31 can also be provided so as to be supported by the groove 30c.

  Thereby, when mounting the covering member 20 on the base plate 10, the base plate 10 and the covering member 20 can be reliably brought into contact with each other regardless of the position where the covering member 20 is mounted. Therefore, the operation of placing the covering member 20 on the base plate 10 is further facilitated, and the productivity of the honeycomb panel can be improved.

  Further, in this embodiment, the sealing member 11 is formed of foamed elastic bodies having internal rectangular cross sections, such as foamed silicon, and is compressed in the vertical direction in accordance with the evacuation, and the original shape after opening. However, as shown in FIG. 10, it is also possible to use a sealing member 32 made of a flexible tubular member in which a gas GA is enclosed. The tubular material is preferably formed from an elastic material having heat resistance such as silicon.

  Thus, when the covering member 20 is pressed downward along with the vacuum, the seal member 32 is compressed in the vertical direction, and when the pressure by the covering member 20 is released, the pressure of the gas GA enclosed inside As a result, the seal member 32 is restored to its original shape, so that the seal member 32 can be used repeatedly over a long period of time.

The perspective view of the jig for manufacture which shows the state before coat | covering the honeycomb sandwich laminated body which shows one Embodiment in this invention Perspective view of components of covering member Plan view of a manufacturing jig showing a state where a honeycomb sandwich laminate is coated. AA line sectional view in FIG. FIG. 4 is a side cross-sectional view of the manufacturing jig showing a state in which air between the covering member and the base plate is sucked to the outside. Main part side surface sectional drawing which shows the bolt fastening part of an upper outer frame member and a lower outer frame member Side sectional view of the main part showing the mounting part of the on-off valve Side surface sectional drawing of the principal part of the lower side outer frame member which shows the modification of this embodiment Side surface sectional drawing of the principal part of the seal part which shows the other modification of this embodiment Side surface sectional view of the main part of the seal part showing still another modification of the present embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Base plate, 11 ... Seal member, 20 ... Cover member, 21 ... Cover sheet, 22 ... Upper outer frame member, 23 ... Lower outer frame member, 24 ... Pipe, 24a ... Outer intake hole, 24b ... Inner intake hole 25 ... Open / close valve, 26 ... Bolt, 30 ... Lower outer frame member, 30a ... Groove, 30b ... Inner intake hole, 30c ... Groove, 31 ... Seal member, 32 ... Seal member, CR ... Honeycomb core, PR ... Prepreg GA ... Gas.

Claims (11)

A base plate capable of placing a honeycomb sandwich laminate formed by laminating surface members on both surfaces of a honeycomb core, and a covering member capable of covering the honeycomb sandwich laminate placed on the base plate, the covering member and the base In the jig for manufacturing a honeycomb panel, in which the covering member is pressure-bonded to the honeycomb sandwich laminate by sucking air between the plates to the outside,
The covering member is composed of a flexible covering sheet capable of covering the upper surface of the honeycomb sandwich laminate and an outer frame member that supports the periphery of the covering sheet, and the contact surface between the outer frame member and the base plate is airtight. A honeycomb panel manufacturing jig characterized by being formed so as to have properties. The honeycomb panel manufacturing jig according to claim 1, wherein an air intake hole capable of sucking air between the covering member and the base plate is provided. The honeycomb panel manufacturing jig according to claim 2, further comprising an on-off valve that opens and closes the intake hole. The outer frame member is formed of an upper outer frame member and a lower outer frame member that can be divided into upper and lower parts, and is configured to sandwich a covering sheet between the upper outer frame member and the lower outer frame member The honeycomb panel manufacturing jig according to claim 1, 2, or 3. The lower outer frame member is formed from a hollow member extending over the entire circumference of the covering member, and the lower outer frame member is provided with at least one outer intake hole communicating with the outer side of the covering member, and the covering member 5. The honeycomb panel manufacturing jig according to claim 4, wherein inner intake holes communicating with the inner side of the lower outer frame member are provided at a plurality of positions at intervals in the circumferential direction of the lower outer frame member. The jig for manufacturing a honeycomb panel according to claim 4 or 5, wherein a contact surface of the lower outer frame member with the covering sheet is formed in a curved surface shape or a non-acute angle shape. The contact panel between the outer frame member and the base plate is formed by a seal member. The honeycomb panel manufacturing jig according to claim 1, 2, 3, 4, 5 or 6. The honeycomb panel manufacturing jig according to claim 7, wherein the sealing member is formed of a foamed elastic body in which internal bubbles are independent from each other. The honeycomb panel manufacturing jig according to claim 7, wherein the sealing member is formed of foamed silicon in which internal bubbles are independent of each other. The jig for manufacturing a honeycomb panel according to claim 7, 8 or 9, wherein the sealing member is provided on a base plate. The jig for manufacturing a honeycomb panel according to claim 7, 8 or 9, wherein the sealing member is provided on a covering member.

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