JP5650557B2 - Hollow plate material bending groove processing apparatus and hollow plate material bending groove processing method - Google Patents

Description

  The present invention relates to a groove processing apparatus for bending a hollow plate material and a groove processing method for bending a hollow plate material, and in particular, by including a heating member, a cooling member, and a groove processing member, the bending groove of the bubble board can be formed in a short time, In addition, the present invention relates to a processing apparatus and a processing method that can be formed with high accuracy and can improve productivity and quality.

A resin-made hollow plate material having a hollow portion such as a bubble board is used as a packaging material or a building material because it has excellent mechanical strength while being lightweight.
Moreover, the bubble board in which the groove for bending is formed is used for a folding container (also called a returnable pallet container). This container can remarkably improve loading efficiency and transportation efficiency in container transportation and truck transportation, and is attracting attention from the viewpoint of environmental protection and effective use of resources.

As said container, the container (container member) described in patent document 1 is mentioned, for example.
This container is a container provided with a sleeve (bubble board) arranged upright on the periphery of the pallet at the top of the pallet. The sleeve is a cylindrical member having four side surfaces, and the adjacent side surfaces are connected. A reinforcing member is fixed outside the four corners so as to cover the corners.
In the sleeve (bubble board), a bending groove having one V shape is formed in the bending portion, and a bending groove having two V shapes is formed in the corner portion. Yes.

Here, in order to more effectively utilize the bubble board having excellent characteristics, for example, as described above, it is necessary to improve a technique for processing (forming) a bending groove in a sleeve (bubble board).
For this reason, various techniques related to the present invention have been proposed.

For example, in Patent Document 2, a synthetic resin bubble board including a concavo-convex sheet on which a large number of protrusions are formed and a flat sheet bonded to at least the front end side of the protrusions in the concavo-convex sheet is bent. A technique for a method of bending a synthetic resin bubble board is disclosed.
In this technique, a first step of forming a ruled line or a cut at a normal temperature at a bent portion for forming a fold in a synthetic resin bubble board, and a second step of heating the bent portion to a predetermined temperature while pressing the bent portion with a heating device. And a third step of holding the synthetic resin bubble board in a folded state at a predetermined angle at the bent portion.

  Patent Document 3 includes a V-shaped blade that forms a V-groove while melting plastic corrugated board by heat, and an attachment member for attaching the V-shaped blade, and the V-shaped blade is disposed away from the attachment member. In addition, there is disclosed a technology of a plastic corrugated board bending apparatus characterized in that a V-shaped blade and an attachment member are connected by two or more suspension arms.

JP 2008-114883 A JP 2007-152876 A Japanese Patent Laid-Open No. 7-16918

  However, the bubble board used for the container described in Patent Document 1 described above needs to be processed (formed) with a folding groove that can be repeatedly folded or folded repeatedly. For this processing, heat ruled line processing is generally used in which a stamped bar heated to a melting point or higher is pressed against the bubble board to melt the bubble board and deform the bubble board to form ruled lines (folding grooves). . In this thermal ruled line processing, the formed high-temperature folding groove may not be forcibly cooled. In this case, there is a problem that the cooling time becomes long and the productivity is lowered.

  In addition, for the purpose of shortening the cooling time, instead of the heated embossing bar, a cold cooling bar having almost the same shape as the embossing bar is pressed against the formed high-temperature bending groove, In some cases, the bending groove in a high temperature state is forcibly cooled. However, in this case, it is almost difficult to press the cooling bar in the same state as the embossing bar, and the shape and depth of the bending groove are not stable and cannot be accurately formed. There was a problem that it could not be improved.

Furthermore, since the foam board used for containers and the like is repeatedly bent or repeatedly folded, for example, to improve durability and mechanical strength so that the portion of the groove for bending is not easily damaged. Is desired.
In addition, although the technique of patent document 2, 3 is a technique relevant to this invention, it was a technique which cannot solve said subject.

  The present invention has been proposed in order to solve the above-described problems, and can be used to accurately form a bending groove for hollow plate material in a short time and improve productivity and quality. An object of the present invention is to provide a groove processing apparatus for bending a hollow plate material and a groove processing method for bending a hollow plate material.

  In order to achieve the above object, a hollow plate material bending groove processing apparatus of the present invention is a processing device that forms a bending groove on a hollow plate material having a hollow portion, and processes the hollow plate material bending groove. A heating member that indirectly supplies heat to a portion to be heated, a cooling member that indirectly recovers the heat supplied to process the groove for bending from the hollow plate, and a groove for bending at the contact end Having a shape corresponding to the heating member and the cooling member on the side opposite to the abutting side, and provided so as to be movable up and down while being positioned in the horizontal direction with respect to the hollow plate material. A groove processing member that forms a groove for bending by supplying heat by contact with the cooling member and recovering heat by contact with the cooling member; and a cradle on which a hollow plate material is placed below the groove processing member. , Heating member that raises and lowers heating member Elevating means, cooling member elevating means for elevating and lowering the cooling member, grooving member elevating means for elevating and lowering the grooving member, and moving means for moving the heating member and cooling member to positions corresponding to the grooving member It is set as the structure provided with.

  Moreover, the groove processing method for bending a hollow plate material of the present invention is a processing method for forming a groove for bending a hollow plate material having a hollow portion using the above-described groove processing device for bending a hollow plate material, A step of lowering the heating member and the groove processing member to heat the hollow plate member, a step of raising the heating member, a step of moving the heating member and the cooling member, and a step of moving the cooling member to a position corresponding to the groove processing member; The step of lowering the cooling member to forcibly cool the hollow plate member, the step of raising the cooling member and the groove processing member, the heating member and the cooling member are moved, and the heating member is moved to a position corresponding to the groove processing member. And a step of moving.

  According to the hollow plate material bending groove processing apparatus and the hollow plate material bending groove processing method of the present invention, the hollow plate material bending groove can be formed in a short time and with high accuracy, and productivity and quality are improved. be able to. Furthermore, durability, mechanical strength, and the like can be improved so that the bending groove portion is not easily damaged.

FIG. 1: has shown the schematic front view for demonstrating the groove processing apparatus for bending of the bubble board concerning one Embodiment of this invention. 2A and 2B are schematic diagrams for explaining a bubble board bending groove processing apparatus according to an embodiment of the present invention. FIG. 2A is a cross-sectional view taken along line AA, and FIG. B arrow view is shown. FIG. 3: has shown the schematic flowchart figure for demonstrating the groove processing method for the bending of the bubble board concerning one Embodiment of this invention. FIG. 4 is a schematic view for explaining a method for processing a groove for bending a bubble board according to an embodiment of the present invention. FIG. 5: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 1st application example of this invention. FIG. 6: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 2nd application example of this invention. FIG. 7: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 3rd application example of this invention.

[Embodiment of a groove processing apparatus for bending a hollow plate]
FIG. 1: has shown the schematic front view for demonstrating the groove processing apparatus for bending of the bubble board concerning one Embodiment of this invention.
FIG. 2 is a schematic view for explaining a bubble board bending groove processing apparatus according to an embodiment of the present invention, in which (a) shows a cross-sectional view along AA, and (b) shows The BB arrow line view is shown.
1 and 2, the bending groove processing apparatus 1 of the present embodiment is configured to include a heating member 2, a cooling member 3, a groove processing member 4, a cradle 5, a base 6, and the like. The bending groove processing apparatus 1 forms a bending groove 11 (also referred to as a bending groove) on a bubble board 10 as a hollow plate member having a hollow portion.

In this embodiment, the hollow plate member having the hollow portion is the three-layer bubble board 10 including the back sheet 101, the cap sheet 102, and the liner sheet 103, but is not limited thereto. As a hollow plate material having a hollow portion, for example, a two-layer plastic board, a three-layer foam board, a plastic corrugated board, a plastic honeycomb board, a four-layer plastic structure having a structure in which the tips of frustoconical hollow pins are welded together And a board (also called a four-layer bubble board).
In addition, the bubble board 10 is usually processed in a state where it is placed in the horizontal direction, but the present invention is not limited to this. For example, the bubble board 10 may be processed in a state where it is set up in the vertical direction.

(Heating member)
The heating member 2 is a substantially pentagonal rod-shaped body having one V-shaped cross section at the bottom (on the groove processing member 4 side), such as a heating means 21 such as a rod-shaped heater, a temperature sensor 22, and an air cylinder. The heating member lifting / lowering means 23 is provided. The heating member 2 supplies heat to the bubble board 10 indirectly to the portion where the bending groove 11 is processed (that is, via the groove processing member 4). The heating member elevating means 23 elevates and lowers the heating member 2.

Here, as will be described later, when the heating member 2 descends from above the groove processing member 4, the two inclined surfaces constituting the V shape come into surface contact with the upper surface of the plate-like portion 41 of the groove processing member 4. Good. If it does in this way, the heat transfer from the heating member 2 to the groove processing member 4 can be performed efficiently, and heating time can be shortened.
The heating member 2 has a structure having two inclined surfaces that are in surface contact with the upper surface of the plate-like portion 41 of the groove processing member 4, but is not limited thereto. For example, although not shown, the anti-contact side (in this embodiment, the upper side) of the grooving member 4 and the lower side of the heating member 2 have a shape corresponding to each other (that is, a shape in which at least a part is in surface contact). I just need it. Even if it does in this way, the heat transfer from the heating member 2 to the groove processing member 4 can be performed efficiently.

(Cooling member)
The cooling member 3 is a substantially pentagonal rod-like body having a single V shape in cross section at the bottom (on the side of the grooved member 4), and a cooling means 31, a temperature sensor 32, and air that circulate cold water. A cooling member elevating means 33 such as a cylinder is provided. The cooling member 3 indirectly collects heat supplied from the bubble board 10 for processing the bending groove 11 (that is, via the groove processing member 4). By providing the cooling member 3 as described above, the portion of the bending groove 11 in a high temperature state can be forcibly cooled as will be described later, so that the cooling time can be shortened and the productivity can be improved. The cooling member elevating means 33 elevates and lowers the cooling member 3.

Here, as will be described later, when the cooling member 3 descends from above the groove processing member 4, the two inclined surfaces constituting the V shape come into surface contact with the upper surface of the plate-like portion 41 of the groove processing member 4. Good. If it does in this way, the heat transfer from the groove processing member 4 to the cooling member 3 can be performed efficiently, and cooling time can be shortened.
In addition, although the cooling member 3 is set as the structure which has two inclined surfaces which are in surface contact with the upper surface of the plate-shaped part 41 of the groove processing member 4, it is not limited to this. For example, although not shown, the anti-contact side (in the present embodiment, the upper side) of the groove processing member 4 and the lower side of the cooling member 3 have a shape corresponding to each other (that is, a shape in which at least a part is in surface contact). I just need it. Even if it does in this way, the heat transfer from the groove processing member 4 to the cooling member 2 can be performed efficiently.
Moreover, the cooling means 31 is not limited to the system which circulates cold water, For example, the cooling means of various systems can be employ | adopted.

(Grooved material)
The groove processing member 4 has a shape (V shape) whose cross-sectional shape corresponds to the bending groove 11. That is, the groove processing member 4 is a plate having a cross-sectional shape corresponding to the bending groove 11 (V shape) on the contact side (the contact side with the bubble board 10, that is, the lower side in the present embodiment). And a connecting portion 42 formed at both ends of the plate-like portion 41. When the groove processing member 4 is lowered, the connecting portion 42 contacts the stopper 44 and is positioned with respect to the height direction of the groove processing member 4. Moreover, the plate-shaped part 41 is V shape which has an angle of 30-90 degrees normally.
The groove processing member 4 is not limited to the above-described structure. For example, the groove processing member 4 has a shape corresponding to the bending groove 11 on the contact side, and the anti-contact side (upper side in the present embodiment). Furthermore, it may have a shape corresponding to the heating member 2 and the cooling member 3. Even if it does in this way, heat transfer with the heating member 2 or the cooling member 3 can be performed efficiently.

Each connecting portion 42 is connected to a grooving member elevating means 43 such as an air cylinder, and the grooving member 4 is positioned in the horizontal direction by a pair of grooving member elevating means 43. It can be moved up and down. Therefore, as described above, the heating member 2 and the cooling member 3 are not in direct contact with the bending groove 11 portion of the bubble board 10, and the groove processing member 4 positioned in the horizontal direction is used for bending. A groove 11 is formed.
Thus, although the groove processing member 4 moves up and down, it is positioned with respect to the horizontal direction, and even if the heating member 2 rises or receives an impact when the cooling member 3 descends, there is no displacement. Since it does not occur, for example, the shape and depth of the bending groove 11 are stabilized, and the bending groove 11 can be formed with high accuracy and the quality can be improved.

  In the present embodiment, an air cylinder or the like is used as the groove machining member elevating means 43, but the present invention is not limited to this. For example, in place of the air cylinder, although not shown, the grooved member lifting means 43 is a linear bearing (or linear guide) for positioning in the horizontal direction, and the grooved member 4 is compressed upward. When the spring and the heating member 2 are raised, locking means for locking so that the grooved member 4 does not rise may be used.

Here, preferably, the groove processing member 4 has a plate-like portion 41 having a shape (V shape) corresponding to the bending groove 11, and the heating member 2 and the cooling member 3 are made of the plate-like portion 41 (that is, a plate). It is preferable to have a shape corresponding to the upper surface of the shape portion 41.
In this way, the heat capacity of the groove processing member 4 is reduced, and the heating member 2 and the cooling member 3 are in surface contact with the upper surface of the plate-like portion 41, so that the heat transfer rate can be improved and the heating time is increased. And cooling time can be shortened, and productivity can be further improved.
In addition, although the plate-shaped part 41 of this embodiment is made into the cross-sectional shape which has one V shape according to the shape of the groove | channel 11 for bending, it is not limited to this, For example, although not shown in figure When the bending groove 11 has a semicircular shape, the cross-sectional shape of the plate-like portion 41 is a semicircular shape.

Preferably, the material of the groove processing member 4 is aluminum, copper, or an alloy containing aluminum or copper. If it does in this way, with the material excellent in thermal conductivity, the heat transfer rate can be improved and the heating time and cooling time can be further shortened.
The operation of the grooving member 4 will be described later.

(Cradle)
The cradle 5 is a substantially rectangular thick plate, and is erected below the plate-like portion 41. The cradle 5 has a bubble board 10 placed on the upper surface.
Here, preferably, the cradle 5 may include a heating means 51 such as a bar heater, a temperature sensor 52, and the like. In this way, the bubble board 10 can be preheated and the heating time can be shortened. In the present embodiment, the cradle 5 is configured to have a bar heater or the like, but is not limited thereto, and may be configured to have no bar heater or the like, for example.

(Base)
The base 6 has a flat plate shape having legs (not shown) or the like below, and the support 5, the groove processing member lifting / lowering means 43, the support member 61, and the like are screwed thereon. The pair of support members 61 support the beam member 62 in which the heating member elevating means 23 and the cooling member elevating means 33 described above are screwed to the lower surface so as to be able to reciprocate. That is, the beam member 62 is supported by the support member 61 via the reciprocating means 63 having the linear guide 631 and the air cylinder 632. The reciprocating means 63 moves the heating member 2 and the cooling member 3 to positions corresponding to the groove processing member 4.
In addition, the base 6 is provided with a mounting plate 64 for mounting the bubble board 10 in front of and behind the cradle 5.
Although not shown, the bending groove processing apparatus 1 has control means such as a computer or a programmable logic controller, and controls temperature, heating member lifting means 23, cooling member lifting means 33, grooves. The processing member elevating means 43, the reciprocating means 63, and the like are controlled.

  Next, the operation of the bending groove processing apparatus 1 having the above-described configuration and the present embodiment of the bending groove processing method for hollow plate material will be described with reference to the drawings. That is, the present invention is also effective as an invention of a method for processing a groove for bending a hollow plate, and the method for processing a groove for bending a hollow plate according to the present embodiment uses a bubble board using the bending groove processing apparatus 1 described above. 10 is a method for processing a groove for bending a hollow plate material in which a groove 11 for bending is formed.

FIG. 3: has shown the schematic flowchart figure for demonstrating the groove processing method for the bending of the bubble board concerning one Embodiment of this invention.
FIG. 4 is a schematic view for explaining a method of processing a groove for bending a bubble board according to an embodiment of the present invention.
As shown in FIGS. 3 and 4 (a), in the bending groove processing apparatus 1, the bubble board 10 is placed on the placement plate 64 and the cradle 5, and the bubble board 10 is preheated by the cradle 5. Is done. Further, the groove processing member 4 is raised, the heating member 2 is positioned above the groove processing member 4, and the cooling member 3 is positioned on the left side (rear side) of the heating member 2.
In addition, the temperature of the heating member 2 is normally controlled to 200 to 300 ° C, and the temperature of the cooling member 3 is normally controlled to 5 to 15 ° C.
This state is a start state (origin return state).

  First, as shown in FIGS. 3 and 4 (b), the bending groove processing apparatus 1 lowers the heating member 2 and the groove processing member 4 and heats the bubble board 10 (step S1). That is, the heating member 2 is lowered by the heating member elevating means 23, the heating member 2 comes into contact with the plate-like portion 41 of the groove processing member 4, and heat is transferred from the heating member 2 to the plate-like portion 41 by heat conduction. Then, at the timing when the plate-like portion 41 is heated (or the timing during heating may be used), the grooving member 4 is lowered by the grooving member elevating means 43 (at this time, the heating member 2 is also lowered). ) When the plate-like portion 41 comes into contact with the bubble board 10, the plate-like portion 41 and the heating member 2 are lowered while heating the bubble board 10 until the connecting portion 42 comes into contact with the stopper 44. As a result, the bending board 11 is formed in the bubble board 10. Note that the resin in the bending groove 11 is in a molten state. The determination as to whether or not the bending groove 11 has been formed is usually made based on the position where the grooving member 4 is lowered, the time after the grooving member 4 starts to descend, or the like.

  Next, as shown in FIGS. 3 and 4 (c), the bending groove processing apparatus 1 raises the heating member 2 (step S2). That is, in this embodiment, only the heating member 2 is raised, and the groove processing member 4 is in contact with the portion of the bending groove 11 in a molten state. At this time, even if the heating member 2 is raised, the groove processing member 4 is positioned with respect to the horizontal direction and the height direction by the groove processing member elevating means 43 and the like. Even if it is lowered, no misalignment or the like occurs. For example, the shape and depth of the bending groove 11 are stable, and the bending groove 11 can be formed with high accuracy and the quality can be improved.

  Next, as shown in FIGS. 3 and 4 (d), the heating member 2 and the cooling member 3 are moved, and the cooling member 3 is moved to a position corresponding to the groove processing member 4 (step S3). That is, the air cylinder 632 moves the beam member 62 to the right (front), and moves the cooling member 3 above the groove processing member 4.

  Next, as shown in FIGS. 3 and 4 (e), the cooling member 3 is lowered to forcibly cool the bubble board 10 (step S4). That is, the cooling member 3 is lowered by the cooling member elevating means 33, the cooling member 3 comes into contact with the plate-like portion 41 of the groove processing member 4, and heat is recovered from the plate-like portion 41 to the cooling member 3 by heat conduction. When the plate-like portion 41 is cooled, the plate-like portion 41 recovers heat from the bubble board 10 by heat conduction. Thereby, in the bubble board 10, the resin in the portion of the bending groove 11 (resin in a molten state) is solidified by forced cooling, and the bending groove 11 is formed. By providing the cooling member 3 in this manner, the portion of the bending groove 11 in a high temperature state can be forcibly cooled, so that the cooling time can be shortened and the productivity can be improved. The determination as to whether or not the bending groove 11 has solidified is normally made based on the time after the cooling member 3 starts to descend.

  In addition, after the heating member 2 is raised and before the cooling member 3 is lowered and the bubble board 10 is forcibly cooled, it is positioned in the horizontal direction and the height direction by the grooving member elevating means 43 and the like. The groove processing member 4 is in contact with a portion of the bending groove 11 in a melted state. That is, since the positioned groove processing member 4 is in contact with the portion of the bending groove 11 in a molten state and protects the shape of this portion, for example, the shape and depth of the bending groove 11, etc. Therefore, the bending groove 11 can be formed with high accuracy and the quality can be improved.

In this embodiment, the distance from the lower end of the lowered grooved member 4 to the upper surface of the cradle 5 is set to be substantially the same as the thickness of the liner sheet 103 of the bubble board 10. Thereby, for example, the central portion of the bending groove 11 functioning as a hinge can be avoided from being too thin and the mechanical strength is reduced, and the thickness becomes too thick to be easily bent. Such a problem can be avoided.
Note that the distance from the lower end of the lowered grooved member 4 to the upper surface of the cradle 5 is not limited to the above, and is appropriately set depending on the application, for example.

Next, as shown in FIGS. 3 and 4 (f), the cooling member 3 and the groove processing member 4 are raised (step S5). That is, the cooling member 3 is raised by the cooling member elevating means 33, and the groove processing member 4 is raised by the grooving member elevating means 43.
Next, although not shown, the raised cooling member 3 and heating member 2 cause the air cylinder 632 to move the beam member 62 to the left (backward) and move the heating member 2 above the groove processing member 4 ( (See FIG. 4 (a)). The bubble board 10 in which the bending groove 11 is formed is moved, and the bubble board 10 in which the next bending groove 11 is formed is placed on the cradle 5 and the mounting plate 64. Thereby, the process for forming the bending groove 11 (one cycle of process) is completed.

As described above, according to the bending groove processing apparatus 1 and the hollow groove bending method of the present embodiment, the bubble board 10 (the portion of the bending groove 11 in the melted state) is cooled by the cooling member 3. Since the cooling is forcibly performed, the cooling time can be shortened and the productivity can be improved. In addition, after the heating member 2 is lifted and before the cooling member 3 is lowered and the bubble board 10 is forcibly cooled, the grooved member 4 that has been positioned has the bent groove 11 in the melted state. Since the portion is in contact with the shape and the shape of the portion is protected, for example, the shape and depth of the bending groove 11 are stabilized, and the bending groove 11 can be formed with high accuracy and the quality can be improved.
Moreover, this embodiment has various application examples.
Next, application examples of the present embodiment will be described with reference to the drawings.

<First application example of groove processing device for bending hollow plate>
FIG. 5: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 1st application example of this invention. 5A shows a cross-sectional view in which the plate-like portion 41a has two V shapes, and FIG. 5B shows a cross-sectional view in which the plate-like portion 41b has three V shapes. Yes.
In FIG. 5, the hollow plate material bending groove processing apparatus of the first application example has two V-shaped plate-like portions 41a of the groove processing member 4a, compared to the bending groove processing apparatus 1 described above. The difference is that the plate-like portion 41b of the groove machining member 4b has three V shapes. The other configuration of this application example is substantially the same as that of the bending groove processing apparatus 1.
Therefore, in FIG. 5, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

In the groove processing member 4a, the plate-like portion 41a has two V-shaped cross sections corresponding to the bending grooves 11a to be formed. Further, in the groove processing member 4b, the plate-like portion 41b has three V-shaped cross sections corresponding to the bending grooves 11b to be formed. In this way, the bubble board 10 in which the bending grooves 11a and 11b are formed has a structure having two or three bent portions, and even if it is repeatedly bent or repeatedly folded, The portion 11b is not easily damaged, and durability and mechanical strength can be improved.
In this application example, the plate-like portions 41a and 41b have two or three V shapes. However, the present invention is not limited to this. For example, the plate portions 41a and 41b may have four or more V shapes. Good.

  Moreover, the heating members 2a and 2b and the cooling members 3a and 3b have shapes (two or three V shapes) in surface contact with the upper surfaces of the plate-like portions 41a and 41b. Thereby, the heat transfer from the heating members 2a and 2b to the groove processing members 4a and 4b can be efficiently performed, the heating time can be shortened, and the cooling members 3a and 3b can be reduced from the groove processing members 4a and 4b. The heat transfer to can be performed efficiently, and the cooling time can be shortened.

  In addition, according to this application example, two or three V shapes can be formed together. For example, when the bending groove processing apparatus 1 is operated twice to form the bending groove 11a, Compared with the case where the bending groove processing apparatus 1 is operated three times to form the bending groove 11b, productivity and the like can be greatly improved. Furthermore, since it is not necessary to adjust the gap between the V shapes and the interval, the quality and the like can be improved.

  As described above, according to the bending groove processing apparatus 1 and the hollow groove bending method of the present application example, the bending grooves 11a and 11b have substantially the same effects as the above embodiment. However, it is difficult to break easily, durability and mechanical strength can be improved, and productivity and quality can be improved.

<Second application example of groove processing apparatus for bending hollow plate>
FIG. 6: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 2nd application example of this invention. 6A shows a cross-sectional view in which the plate-like portion 41a has two V shapes, and FIG. 6B shows a cross-sectional view in which the plate-like portion 41b has three V shapes. Yes.
In FIG. 6, the hollow plate material bending groove processing apparatus of the second application example has a heating member 2c and a cooling member 3c corresponding to the two V-shapes of the plate-like portion 41a as compared with the first application example described above. The heating member 2d and the cooling member 3d are divided in accordance with the three V shapes of the plate-like portion 41b. The other configurations of this application example are almost the same as those of the first application example.
Therefore, in FIG. 6, the same components as those in FIG. 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heating member 2c and the cooling member 3c are divided (divided into two) corresponding to the two V shapes of the plate-like portion 41a, and the divided members 24 and 34 are connected via shims 25 and 35, respectively. Has been. That is, the divided members 24 and 34 have two slopes constituting one V shape at the lower part. These two slopes are in surface contact with the upper surface of the grooved member 4a. Here, since the divided members 24 and 34 are connected to each other via shims 25 and 35, respectively, the four slopes should be adjusted with high accuracy so as to be in surface contact with the upper surface of the groove processing member 4a. The heating time and cooling time can be shortened. In addition, since the groove processing member 4a can be heated or cooled substantially uniformly, it is possible to avoid a problem that unevenness occurs in the formation of the bending groove 11a.

  Moreover, the heating member 2d and the cooling member 3d are divided (three divisions) corresponding to the three V shapes of the plate-like portion 41a, and the divided members 24 and 25 and the divided members 34 and 35 are provided. Are connected via shims 25 and 35, respectively. That is, the divided members 24, 25, 34, and 35 have two slopes constituting one V shape at the lower part. These two slopes are in surface contact with the upper surface of the grooved member 4a. Here, since the divided members 24 and 25 and the divided members 34 and 35 are connected via the shims 25 and 35, respectively, the six inclined surfaces are in surface contact with the upper surface of the groove processing member 4a. Thus, it can adjust with accuracy and can shorten heating time and cooling time. In addition, since the groove processing member 4a can be heated or cooled substantially uniformly, it is possible to avoid a problem that unevenness occurs in the formation of the bending groove 11a.

Each member 24, 25 has heating means 21c, 21d substantially the same as in the above embodiment, and each member 34, 35 has cooling means 31c, 31d, substantially the same as in the above embodiment. doing.
Further, if the members 24 and 25 and the members 34 and 35 are prepared, for example, even when the members have four or more V shapes, it is possible to easily cope with them (however, four or more members). It is necessary to manufacture the grooved member 4 having a V shape), and the convenience can be improved.

  As described above, according to the bending groove processing apparatus 1 and the bending groove processing method of the hollow plate material of the present application example, there are substantially the same effects as the first application example, and the heating time and the cooling time are reduced. Since it can be shortened, and the grooved members 4a and 4b can be heated and cooled substantially uniformly, it is possible to avoid problems such as unevenness in the formation of the bending grooves 11a and 11b. The quality and quality can be improved.

<Third application example of groove processing apparatus for bending hollow plate>
FIG. 7: has shown schematic sectional drawing for demonstrating the groove processing apparatus for the bubble board bending concerning the 3rd application example of this invention. FIG. 7A shows a cross-sectional view in which the cradle 5e has the concave portion 53, and FIG. 7B shows a cross-sectional view in which the cradle 5f has the convex portion 54.
In FIG. 7, the hollow plate material bending groove processing apparatus of the third application example has a point that the cradle 5e has a concave portion 53, a point that the cradle 5f has a convex portion 54, and the like as compared with the above-described embodiment. Is different. In addition, the other structure of this application example is as substantially the same as the said embodiment.
Therefore, in FIG. 7, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7A, the cradle 5 e has a concave portion 53 corresponding to the bending groove 11 on the upper surface on which the bubble board 10 is placed. The concave portion 53 is provided substantially linearly at a position corresponding to the corner of the plate-like portion 41, and the cross-sectional shape is substantially an arc shape. Further, the depth of the recess 53 is substantially the same as the thickness of the liner sheet 103. In this way, the bubble board 10 can have the liner sheet 103e protruding in an arc shape corresponding to the folding groove 11, and when the bubble board 10 is bent into a V shape, a part of the liner sheet 103e is formed. Is elastically deformed. Therefore, even if the bubble board 10 is repeatedly folded or repeatedly folded, the liner sheet 103e is not easily damaged, and durability and mechanical strength can be improved.

The position, cross-sectional shape, depth, and the like of the recess 53 are not limited to the above. For example, although not illustrated, the recess 53 is substantially broken at a position corresponding to the corner of the plate-like portion 41. In addition, the cross-sectional shape, depth, and the like may be set as appropriate.
Further, the corner of the plate-like portion 41 has a shape curved with a predetermined radius of curvature, and the cross-sectional shape of the recess 53 usually has a larger radius of curvature than the radius of curvature of the corner of the plate-like portion 41. It is arcuate.

  Further, as shown in FIG. 7B, the cradle 5 f has a convex portion 54 corresponding to the bending groove 11 on the upper surface on which the bubble board 10 is placed. The convex portion 54 is provided in a substantially linear shape at a position corresponding to the corner portion of the plate-like portion 41f of the groove processing member 4f, and the cross-sectional shape is substantially an arc shape. Further, the height of the recess 53 is substantially the same as the thickness of the liner sheet 103. In this manner, the bubble board 10 can have a liner sheet 103f that is recessed in an arc shape corresponding to the folding groove 11, and is V-shaped (V-shaped inverted) When being folded into a shape), a part of the liner sheet 103f is elastically deformed. Therefore, even if the bubble board 10 is repeatedly folded or repeatedly folded, the liner sheet 103f and the like are not easily damaged, and durability and mechanical strength can be improved.

Note that the position, sectional shape, height, and the like of the convex portion 54 are not limited to the above. For example, although not shown, the convex portion 54 is located at a position corresponding to the corner of the plate-like portion 41. It may be provided in a substantially broken line shape, and the cross-sectional shape, height, etc. may be set as appropriate.
Further, the corner of the plate-like portion 41f has a shape having a belt-like plane with a predetermined width, and has a structure that can be easily bent into a V shape with the bubble board 10 turned upside down.

As described above, according to the bending groove processing apparatus 1 and the hollow plate bending groove processing method of the present application example, there are substantially the same effects as those of the above-described embodiment, and it is repeatedly bent or repeatedly folded. Even in this case, the portion of the bending groove 11 is not easily damaged, and the durability and mechanical strength can be improved.
The cradle 5e, 5f having the concave portion 53 and the convex portion 54 can also be applied to the case where the bending groove 11a or the bending groove 11b having two or more V shapes is formed, such as durability and mechanical strength. Can be further improved.

As mentioned above, although the preferred embodiment etc. were demonstrated and demonstrated about the groove processing apparatus for bending of the hollow plate material of this invention, and the groove processing method for bending of a hollow plate material, the groove processing apparatus for hollow plate material and hollow plate material which concern on this invention were demonstrated. It is needless to say that the bending groove processing method is not limited to the embodiment described above, and various modifications can be made within the scope of the present invention.
For example, although not shown, in order to improve durability and mechanical strength of the bending groove 11 portion, the bending groove 11 portion and the vicinity thereof are made of fibers having excellent mechanical strength. A resin sheet having a woven fabric may be fused to the bubble board 10 when the bending groove 11 is formed. In this way, the bending groove 11 can be formed, and the durability and mechanical strength of the bending groove 11 can be improved.

1 Bending groove processing device 2, 2a, 2b, 2c, 2d Heating member
3, 3a, 3b, 3c, 3d Cooling member
4, 4a, 4b, 4f Grooving member
5, 5e, 5f cradle
6 Base 11, 11a, 11b Bending groove
21, 21c Heating means
22 Temperature sensor
23 Lifting means for heating member
24 members
25 Sim
26 Member 31, 31c Cooling means
32 Temperature sensor
33 Lifting means for cooling member
34 members
35 shim 36 member
41, 41a, 41b, 41f Plate-shaped part
42 connecting part
43 Elevating means for groove processing member 44 Stopper
51 Heating means 52 Temperature sensor 53 Recessed part 54 Protruding part 61 Support member 62 Beam member 63 Reciprocating means 64 Mounting plate 101 Back sheet 102 Cap sheets 103, 103e, 103f Liner sheet
631 Linear Guide 632 Air Cylinder

Claims (8)

In the groove processing apparatus for bending a hollow plate material for forming a groove for bending a hollow plate material having a hollow part,
A heating member that indirectly supplies heat to a portion of the hollow plate material for processing the bending groove;
A cooling member for indirectly recovering heat supplied to process the groove for bending from the hollow plate material;
The contact side has a shape corresponding to the bending groove, and the anti-contact side has a shape corresponding to the heating member and the cooling member, and is positioned in the horizontal direction with respect to the hollow plate material. A groove processing member that is provided so as to be movable up and down, and that forms the bending groove by supplying heat by contact with the heating member and collecting heat by contact with the cooling member;
A cradle on which the hollow plate material is placed, provided below the groove processing member,
Heating member elevating means for elevating and lowering the heating member;
Cooling member elevating means for elevating and lowering the cooling member;
Elevating means for grooving member for elevating and lowering the grooving member;
A groove processing apparatus for bending a hollow plate material, comprising: a moving unit that moves the heating member and the cooling member to a position corresponding to the groove processing member. The groove processing member has a plate-like portion having a shape corresponding to the bending groove, and the heating member and the cooling member have a shape corresponding to the plate-like portion. The groove processing apparatus for bending a hollow plate material according to 1.   The said plate-shaped part has two or more V shape, The groove processing apparatus for bending of the hollow plate material of Claim 2 characterized by the above-mentioned.   The said heating member and the said cooling member are divided | segmented corresponding to two or more V shape of the said plate-shaped part, The divided members are connected through the shim. 4. A groove processing apparatus for bending a hollow plate material according to 3.   The said cradle has a heating means, The groove processing apparatus for bending of the hollow plate material as described in any one of Claims 1-4 characterized by the above-mentioned.   The hollow plate material according to any one of claims 1 to 5, wherein the cradle has a concave portion and / or a convex portion corresponding to the bending groove on a mounting surface of the hollow plate material. Grooving device for bending.   The hollow plate material bending groove processing apparatus according to any one of claims 1 to 6, wherein the hollow plate material is a three-layered bubble board. A hollow groove material bending method for forming a hollow plate material by using the hollow groove material bending groove processing apparatus according to any one of claims 1 to 7 to form a hollow groove for a hollow plate material having a hollow portion. In
Lowering the heating member and the groove processing member and heating the hollow plate,
Raising the heating member;
Moving the heating member and the cooling member, and moving the cooling member to a position corresponding to the groove processing member;
Lowering the cooling member and forcibly cooling the hollow plate,
Raising the cooling member and the groove processing member;
And a step of moving the heating member and the cooling member to move the heating member to a position corresponding to the groove processing member.

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