JP6022748B2 - Buffer material manufacturing apparatus and buffer material manufacturing method - Google Patents

Description

  The present invention relates to a cushioning material manufacturing apparatus, a cushioning material manufacturing method, and a cushioning material sheet, and in particular, air can be supplied to the air chamber from both sides in the width direction of the cushioning material sheet. The present invention relates to a cushioning material manufacturing apparatus, a cushioning material manufacturing method, and a cushioning material sheet that can improve added value.

  2. Description of the Related Art Conventionally, a cushioning material (or also called a filling material) having a pillow-like air chamber has been used when packing precision machines or waste products. In such a buffer material, the vertical dimension of the air chamber is usually several cm to several tens of cm, the horizontal dimension is several cm, and the thickness is 2 cm to 4 cm. For example, compared with a bubble sheet, it has a large air chamber, so that it can be used effectively (or with a small amount of use) for a relatively wide gap.

  However, the cushioning material has a disadvantage that the transportation efficiency is lowered due to the large air chamber. In order to solve this disadvantage, various techniques of a method of enclosing air in an air chamber (also called a field expansion type) when used by a user have been proposed.

For example, in Patent Document 1, air is blown through an air chamber extending in the longitudinal direction of a film material (also referred to as a cushioning sheet), and an air chamber extending in the width direction is connected to the air chamber and then inflated. The technology of an air cushioning material manufacturing apparatus is disclosed in which heat sealing along the longitudinal direction of the film material is performed with a heating member so as to close the opening of the air chamber, and the independent air chamber connected gas bags are continuously manufactured. .
This air cushioning material manufacturing apparatus has the following features.
The film material is a continuous air in the longitudinal direction between the tip of the partition and the opposite edge by the partition formed from one edge of the strip-shaped cylindrical film toward the opposite edge. A chamber and an air chamber sandwiched between the partition portions and having an opening on the air chamber side are formed, and perforations are formed in the width direction with respect to at least a part of the partition portion, and a large number of air chambers are continuous. It is a roll-like one provided.

In addition, the air cushioning material manufacturing device is equipped with a processing part that blows air against the film material fed by the feed roller pair and swells and forms an independent air chamber by heat sealing. This processing part is fixed A flat strip-shaped guide member having a member, a heater, an upper belt, a lower belt, an upper surface guide member, a lower surface guide member, a nozzle, and a cutter is provided.
Further, the upper surface guide member and the lower surface guide member are positioned slightly apart in the air blowing direction on the front side of the air blowing port of the nozzle, with the film material cut off at the edge on the air chamber side by the cutter of the strip plate guide member. It is installed at a position sandwiched from above and below.
Also, the nozzle is cut to the edge on the air chamber side by the cutter of the strip plate guide member, and the tip can be inserted into the air chamber portion of the film material sandwiched between the upper surface guide member and the lower surface guide member It has a flat air outlet that extends.

  Further, Patent Document 2 discloses that air is ejected from a nozzle inserted into an air chamber extending in the longitudinal direction of the film material, and an air chamber extending in the width direction is connected to the air chamber. Heating is performed along the longitudinal direction of the film material with a heating member disposed downstream of the outlet, and the air chamber is also slit longitudinally with a cutting member disposed downstream of the nozzle air outlet, and then inflated. The technology of the air shock absorbing material manufacturing apparatus which manufactures continuously the independent air chamber connection gas bag of a state is disclosed.

  In Patent Document 3, a plurality of air chambers that are formed of two sheet-like materials and can accommodate air are arranged at predetermined intervals, and air is supplied to one end surface of each air chamber. A technique of a bubble sheet precursor (also referred to as a cushioning material sheet) in which an air inlet to be introduced is disposed is disclosed.

Japanese Patent No. 4504462 Japanese Patent No. 4199823 JP 2004-306407 A

However, although the techniques of Patent Documents 1 to 3 described above can reduce the transportation cost and storage space, the air is supplied to the air chamber only from one side of the cushioning material sheet, so that the production speed is limited. There was a problem that productivity could not be improved.
In addition, the cushioning material in which the air chambers are arranged in parallel in the longitudinal direction and the width direction of the cushioning material sheet can be freely separated and used by the user depending on the material to be packed, etc., but the air is only aligned in the longitudinal direction. When the chambers are arranged side by side, the degree of freedom to use them separately is reduced. That is, the cushioning material in which the air chambers are arranged in a line only in the longitudinal direction has a problem that the added value as a product cannot be improved.

In addition, the shock absorber manufacturing apparatus is required for the quality of the shock absorber to be manufactured (for example, the quality that the seal portion is not damaged and the air can be reliably sealed), the stability of operation, the operability, and the like. Yes.
In addition, although the technique of patent documents 1-3 is a technique relevant to this invention, it was a technique which cannot solve said problem.

  The present invention has been proposed to solve the above-described problems, and can supply air to the air chamber from both sides in the width direction of the cushioning material sheet, thereby adding productivity and added value as a product. It is an object of the present invention to provide a cushioning material manufacturing apparatus, a cushioning material manufacturing method, and a cushioning material sheet that can improve (for example, an added value that two air chambers are arranged in parallel in the width direction).

The shock absorber manufacturing apparatus of the present invention includes a pair of guided portions extending in the longitudinal direction between the air chambers in parallel with the air chambers in the longitudinal direction and the air chambers. Supplying air to the air chamber from both sides in the width direction of the cushioning material sheet while conveying a belt- like cushioning material sheet having an air supply port communicating with the guided portion on the end side in the width direction; In addition, the air supply port of the expanded air chamber is sealed .

Then, the buffer material manufacturing apparatus includes a guide means having a pair of tubular or rod-shaped guide member for guiding the opposite ends of the inserted with the width direction of the seat cushioning material guided part, the width of the sheet cushions A pair of cutting means for cutting both ends in the direction, and a nozzle that is positioned between the cut sheet of the cushioning material sheet and the other sheet and that supplies air to the air chamber through the air supply port A pair of air supply means, a first belt and a second belt conveyed with the air-supplied cushioning material sheet sandwiched therebetween, and a cushioning material sheet via the first belt and / or the second belt A pair of welding means having heating means for heating, in order from the upstream side in the transport direction, the distance between the pair of guide members is set shorter than the width dimension of the cushioning material sheet, and the pair of opposing guides Between members Hold the center part in the width direction of the cushioning material sheet from above and move the upper holding member to move downward from the virtual plane including the center line of the pair of guide members, and the parts on both sides in the widthwise direction of the cushioning material sheet A meandering prevention means having a lower pressing member that is pressed from the side and held on the virtual plane is provided .

Moreover, the manufacturing method of the cushioning material of the present invention includes a pair of guided portions extending in the longitudinal direction between the both ends in the width direction and the air chamber, and the air chamber. However, by using a band-shaped cushioning material sheet having an air supply port communicating with the guided portion on the end side in the width direction, the cushioning material sheet is inserted into the guided portion, and both ends in the width direction are inserted. The distance between the pair of guide members is set to be shorter than the width dimension of the cushioning material sheet, and the central portion in the width direction of the cushioning material sheet from the upper side between the pair of opposing guide members While holding down, moving below the virtual plane including the center line of the pair of guide members, while holding the parts on both sides in the width direction of the cushioning material sheet from the lower side and holding on the virtual plane , For cushioning material, cut both ends in the width direction of the cushioning material sheet Air is supplied to the air chamber through the air supply port from the nozzle located between one sheet and the other sheet that has been cut off, and the air supply port of the expanded air chamber is sealed, and the air chamber This is a method for sealing air.

  According to the cushioning material manufacturing apparatus, the cushioning material manufacturing method, and the cushioning material sheet of the present invention, air can be supplied to the air chamber from both sides in the width direction of the cushioning material sheet. Value (for example, added value that two air chambers are arranged in parallel in the width direction) and the like can be improved.

Figure 1 shows a schematic enlarged plan view of the cushioning material for sheet Ru used in embodiments of the present invention. FIG. 2: has shown the schematic plan view of the principal part for demonstrating the shock absorbing material manufacturing apparatus concerning embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 shows a cross-sectional view taken along the line BB of FIG. FIG. 5: is a schematic enlarged view of the principal part for demonstrating the shock absorbing material manufacturing apparatus concerning embodiment of this invention, (a) has shown the top view, (b) is the arrow line view of a side direction. Is shown. FIG. 6: has shown schematic expanded sectional drawing of the principal part for demonstrating operation | movement of the shock absorbing material manufacturing apparatus concerning embodiment of this invention. FIG. 7: has shown the schematic flowchart figure for demonstrating the manufacturing method of the shock absorbing material concerning embodiment of this invention. Figure 8 shows a schematic plan view of another example of a cushioning material for sheet Ru used in embodiments of the present invention.

[ Sheet for cushioning material ]
Figure 1 shows a schematic enlarged plan view of the cushioning material for sheet Ru used in embodiments of the present invention.
In FIG. 1, the cushioning material sheet 10 includes a welded portion 11, an air chamber 12, an air supply port 13, a guided portion 14, a longitudinal perforation 15, and a widthwise perforation 16. The cushioning sheet 10 is formed in a belt shape, and air chambers 12 are arranged in two rows in the longitudinal direction. Further, while the cushioning material sheet 10 is being conveyed, air is supplied to the air chamber 12 from both sides in the width direction, and the air supply port 13 of the expanded air chamber 12 is sealed. That is, in the cushioning material sheet 10, the air chamber 12 has an air supply port 13 on the end side in the width direction (the air chambers 12 in the right column have an air supply port 13 on the right side, The air chambers 12 in the row have air supply ports 13 on the left side), and air is supplied to the air chambers 12 from both sides in the width direction.
In addition, air is supplied to the air chamber 12 from both sides in the width direction while the shock-absorbing material sheet 10 is conveyed by the shock-absorbing material manufacturing apparatus 1 described later, and the air supply port 13 of the expanded air chamber 12 is sealed. .

The cushioning material sheet 10 is made of resin, and in the present embodiment, the cushioning material sheet 10 is made of nylon having a four-layer structure, but is not limited thereto.
Further, the cushioning material sheet 10 is formed by flattening a cylindrical sheet and forming a belt-like shape. Therefore, both end portions in the width direction are connected, and the sheets overlap each other between the both end portions (see FIG. 6 (a)). In this cushioning material sheet 10, two air chambers 12 are arranged in the width direction by a welded portion 11 where the stacked sheets are welded, and the two air chambers 12 are also arranged in the longitudinal direction. . Each air chamber 12 has a substantially rectangular shape, and the four corners have arc shapes. In the air chamber 12 located on one end side in the width direction (left side in FIG. 1), the welded portion 11 is not formed in a portion corresponding to the side on the one end side. It becomes the mouthpiece 13. Further, the air chamber 12 located on the other end side in the width direction (the right side in FIG. 1) is not formed with the welded portion 11 in a portion corresponding to the side on the other end side, and this portion is on the right side. The air supply port 13 becomes.
Note that the shape of the air chamber 12 (planar shape before air is supplied) is usually substantially rectangular, and when air is supplied to the air chamber 12, it becomes a pillow type. However, the shape of the air chamber 12 is not limited to the above shape, and may be, for example, a circle, an ellipse, a semicircle, or a polygon.

Further, the cushioning material sheet 10 has a pair of guided portions 14 extending in the longitudinal direction between both end portions in the width direction and the air chamber 12. That is, the left guided portion 14 is provided between the left end portion of the seat and the air chamber 12 located on the left side, and between the right end portion of the seat and the air chamber 12 located on the right side, It has a guided portion 14 on the right side. A guide rod 41 of the shock absorber manufacturing apparatus 1 described later is inserted into each guided portion 14.
The air chamber 12 has an air supply port 13 that communicates with the guided portion 14 adjacent to the air chamber 12. That is, the air chamber 12 located on the left side has the left air supply port 13 communicating with the guided portion 14 (left guided portion 14) adjacent to the air chamber 12, and the air chamber 12 located on the right side. Has a right air supply port 13 communicating with the guided portion 14 (right guided portion 14) adjacent to the air chamber 12.

Since the cushioning sheet 10 is provided with the air chambers 12 arranged in two rows in the longitudinal direction, the cushioning material sheet 10 is more suitable for a packing material or the like than the case where the air chambers 12 are arranged in a row in the longitudinal direction. Accordingly, for example, it can be used in a state in which the air chambers 12 are arranged in two rows in the longitudinal direction, or can be used in a state in which the air chambers 12 are arranged in a row in the longitudinal direction. The added value as a product can be improved.
In the cushioning material sheet 10, the air chamber 12 located on the left side is supplied with air from the left air supply port 13, and the air chamber 12 located on the right side is supplied with air from the right air supply port 13. Therefore, the production speed can be increased and the productivity can be improved.

Here, preferably, a longitudinal perforation 15 extending in the longitudinal direction is formed between the welded portions 11 of the air chambers 12 arranged in parallel in the width direction, and welding of the air chambers 12 arranged in parallel in the longitudinal direction is performed. A width direction perforation 16 extending in the width direction may be formed between the portions 11.
In this way, the user can insert the cushioning material sheet 10 (that is, usable cushioning material) in which the air supply port 13 of the swelled air chamber 12 is sealed in the longitudinal direction or the air chamber 12 is sealed. It can be easily separated along the width direction. Therefore, the cushioning material sheet 10 can improve usability and the like.

The air chambers 12 arranged side by side in the width direction are separated from each other, a longitudinal perforation 15 is formed in a portion between the air chambers 12, and the air chambers 12 arranged in parallel in the longitudinal direction. The two are separated from each other, and a width direction perforation 16 is formed in a portion between the air chambers 12. Thereby, when cut | disconnecting along the longitudinal direction perforation 15 or the width direction perforation 16, the malfunction of damaging the air chamber 12 can be avoided.
In addition, the longitudinal perforations 15 and the width direction perforations 16 are usually welded in a chain line shape (the portion welded in a chain line shape has a reduced mechanical strength and is easily separated), or a chain line. However, the present invention is not limited to these, and any structure that can be easily separated may be used.

As described above, the cushioning material sheet 10 used in the present embodiment can supply air to the air chamber 12 from both sides in the width direction of the sheet. The added value that two air chambers 12 are juxtaposed can be improved.

[Embodiment of shock absorber manufacturing apparatus]
FIG. 2: has shown the schematic plan view of the principal part for demonstrating the shock absorbing material manufacturing apparatus concerning embodiment of this invention.
FIG. 3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is a cross-sectional view taken along the line BB in FIG.
Further, FIG. 5 is a schematic enlarged view of a main part for explaining the shock absorber manufacturing apparatus according to the embodiment of the present invention, (a) shows a plan view, and (b) shows an arrow in the side direction. A view is shown.
2-5, the shock absorbing material manufacturing apparatus 1 of this embodiment has the housing | casing 2, the unwinding means 3, the guide means 4, the cutter 5, the air supply means 6, the welding means 7, etc. FIG. The cushioning material manufacturing apparatus 1 supplies air to the air chamber 12 from both sides (the right side and the left side shown in FIGS. 2 and 4) of the cushioning material sheet 10 while conveying the cushioning material sheet 10 described above. Then, the air inlet 13 of the expanded air chamber 12 is sealed.

(Casing)
The housing 2 is substantially box-shaped, and is attached with a substrate 21, a blower 64, and the like. Moreover, the housing | casing 2 has a some block which can be attached or detached, and can remove a predetermined block at the time of a maintenance. In addition, the shape of the housing | casing 2 is not specifically limited.

(Unwinding means)
The unwinding means 3 includes an unwinding shaft 31, a threaded shooting 32, a rotation support member 33, a support roller 34, and the like, and is configured to unwind the roll-shaped cushioning material sheet 10. The roll-shaped cushioning material sheet 10 is usually wound around a cylindrical core.
The unwinding shaft 31 has a rotation support member 33 rotatably attached to one end portion thereof, and the other end portion is fitted into a housing 311 fixed to the housing 2 so as to be reciprocally movable. Is retained. The rotation support member 33 has one end portion (a portion on the center side in the width direction) inserted into the core, and a flange portion on the other end portion (a portion on the end side in the width direction) abuts on the end surface of the core. . The housing 311 is formed with a hole into which the other end of the unwinding shaft 31 is fitted, and a female screw is cut on the bottom surface of the hole. In the threaded photographing 32, the screw portion is fastened to the female screw of the housing 311, and the tip of the screw portion is connected to the other end portion of the unwinding shaft 31. The pair of unwinding shafts 31 and the like are provided facing each other so as to sandwich the roll-shaped cushioning material sheet 10, and the pair of facing rotation support members 33 sandwich the winding core rotatably.

Further, below the unwinding shaft 31, support rollers 34 that temporarily support the newly installed roll-shaped cushioning material sheet 10 are provided at four locations. Thereby, the roll-shaped sheet | seat 10 for buffer materials can be attached easily. Further, a pair of rollers 35 is provided to smoothly feed the cushioning material sheet 10 unwound from the unwinding means 3.
Thus, by providing the unwinding means 3, the roll-shaped cushioning material sheet 10 can be unwound easily and smoothly, and the operability and the like can be improved.
In addition, although the sheet | seat 10 for buffer materials is normally supplied to a user with a roll form, it is not limited to this. For example, it may be supplied to the user in a folded form. In such a case, the unwinding means 3 is not necessary (however, the pair of rollers 35 is usually necessary).

(Guide means)
Each of the pair of guide means 4 includes a guide bar 41, a guide roller 42, and the like, and is provided above the substrate 21 and opposed to the upstream side in the conveyance direction of the cushioning material sheet 10. The pair of guide means 4 guides both end portions in the width direction of the cushioning material sheet 10.
The pair of guide means 4, the pair of cutters 5, the pair of air supply means 6, and the pair of welding means 7 are provided in order from the upstream side to the downstream side in the conveyance direction of the cushioning material sheet 10.
Further, as described above, the cushioning material sheet 10 has a pair of guided portions 14 extending in the longitudinal direction between both ends in the width direction and the air chamber 12.

  The guide bar 41 has a substantially circular cross section, and has an upstream end formed in a substantially conical shape, and functions as a bar-shaped guide member inserted into the guided portion 14. Further, the distance between the pair of guide bars 41 is set to be shorter than the width dimension of the cushioning material sheet 10, so that air can be supplied to the air chamber 12 without hindrance. Further, each guide rod 41 has a downstream end attached to the nozzle 61 and connected to the nozzle 61. Thereby, when supplying air to the air chamber 12, for example, the problem that air leaks from the gap between the guide rod 41 and the nozzle 61 can be effectively suppressed, and the air can be supplied efficiently.

The guide roller 42 is provided on the downstream side of the guide bar 41 so that the outer peripheral surface is made of rubber or resin, is rotatable, and is urged to press the guided portion 14 against the guide bar 41. Yes. The guide roller 42 functions as a guide pressing member that presses the guided portion 14 against the guide rod 41 from the outer side in the width direction toward the center side, and applies tension in the longitudinal direction to the guided portion 14.
That is, each guide roller 42 is provided on the downstream side of the guide bar 41 in a state where the rotation axis is orthogonal to a virtual plane (not shown) including the center line of the pair of guide bars 41, and the left guide The guide roller 42 corresponding to the bar 41 is located on the left side of the guide bar 41, and the guide roller 42 corresponding to the right side guide bar 41 is located on the right side of the guide bar 41. As a result, with respect to the cushioning material sheet 10 conveyed by the first belt 74 and the second belt 79 on the downstream side, the guided portion 14 between the first belt 74 and the second belt 79 and the guide roller 42 The tension in the longitudinal direction can be applied, and the guided portion 14 between the first belt 74 and the second belt 79 and the guide roller 42 is maintained in a stretched state. Therefore, the cutter 5 can easily and reliably cut the guided portion 14 and suppress the generation of unnecessary gaps through which air leaks, so that air can be efficiently supplied to the air chamber 12. For example, problems such as leakage of supplied air can be effectively suppressed.

The configuration of the guide means 4 is not limited to the above. For example, although not shown, a cylindrical guide member or the like may be used instead of the guide bar 41.
Instead of the guide roller 42, a leaf spring having a sliding surface with a low frictional resistance (for example, a sliding surface made of fluororesin) may be used.
Further, the urging means for urging the guide roller 42 is usually configured to have a pair of rods and a compression spring, but is not particularly limited. The urging means is normally fixed to the substrate 21.

Further , by removing the slack in the width direction of the cushioning material sheet 10 guided by the guide means 4 between the pair of opposing guide bars 41, the cushioning material sheet 10 is conveyed in a meandering state. The meander prevention means 43 which prevents this is provided .
The meandering prevention means 43 has four bent bars (two upper presser bars 431 and two lower presser bars 432) whose one end is fixed to the substrate 21. A part of the two upper presser bars 431 is positioned substantially opposite the center of the guide bars 41 and below a virtual plane (not shown) including the center line of the pair of guide bars 41. Then, the central portion in the width direction of the cushioning material sheet 10 conveyed via the roller 35 is pressed from the upper side and forcibly moved downward. In addition, the two lower presser bars 432 are located between the upper presser bar 431 and the guide bar 41 and substantially on the above-described virtual plane, and are cushioned by the rollers 35. The parts on the both sides in the width direction of the sheet 10 are pressed from the lower side and forcibly held on the above virtual plane (see FIG. 4).
In this way, since the cushioning material sheet 10 is substantially stretched in the width direction, it is possible to effectively eliminate the problem of being conveyed in a meandering state and to improve the stability of the operation as a device. Can be improved.

In addition, that the sheet | seat 10 for buffer materials is conveyed in the meandering state means that the width direction perforation 16 of the sheet | seat 10 for buffer materials is conveyed in the state which does not become a right angle with respect to a conveyance direction.
In the present embodiment, the upper presser bar 431 and the lower presser bar 432 are provided as the meandering prevention unit 43, but the present invention is not limited to this structure, and for example, a plate-like member may be used. .

(Cutter)
The pair of cutters 5 is a knife-like blade, is provided substantially between the guide roller 42 and the air supply means 6, and functions as a pair of cutting means for cutting both ends of the cushioning material sheet 10 in the width direction. . The tip of the cutter 5 is usually located in a recess (not shown), and the buffer material sheet 10 is reliably cut. Further, the position in the transport direction in which the cutter 5 cuts the cushioning material sheet 10 is usually the upstream end of the nozzle 61 or in the vicinity of the upstream end (range within a few mm from the upstream end). It is. Thereby, the first pressing roller 62 and the second pressing roller 63 smoothly and immediately after cutting the guided portion 14 (that is, while the cushioning material sheet 10 is transported several mm after cutting). In addition, the cushioning sheet 10 can be smoothly conveyed, and when air is supplied to the air chamber 12, air leakage from the cut guided portion 14 can be effectively suppressed.

(Air supply means)
Each of the pair of air supply means 6 includes a nozzle 61, a first pressing roller 62 as a first pressing means, a second pressing roller 63 as a second pressing means, a blower 64, and the like. It is provided facing the downstream side (see FIG. 5). The positions of the tip of the nozzle 61, the first pressing roller 62, and the second pressing roller 63 in the width direction correspond to the guide rods 41 (that is, correspond to the guided portion 14 of the cushioning material sheet 10). doing.).
The nozzle 61 has a substantially rectangular flat plate shape on the tip side, has a thickness substantially the same as the diameter of the guide bar 41, and is fixed to the substrate 21 along the transport direction. The nozzle 61 is positioned between one sheet 101 (lower sheet (see FIG. 6)) and the other sheet 102 (upper sheet (see FIG. 6)) of the cut cushioning material sheet 10. Then, air is supplied to the air chamber 12 through the air supply port 13. That is, in the shock absorber manufacturing apparatus 1, the left air supply means 6 supplies air to the air chamber 12 located on the left side of the shock absorber sheet 10, and the right air supply means to the air chamber 12 located on the right side. Since 6 supplies air, the production speed can be increased and the productivity can be improved.

In addition, the nozzle 61 has a protruding portion in which the concave portion is formed on the center side of the upstream end surface, and a guide bar 41 is fixed (screwed) to the end surface of the protruding portion. Further, a pair of first pressing rollers 62 that press one sheet 101 against one surface (lower surface) of the nozzle 61 by an urging means are provided on the center side of the lower surface, and the urging means is provided on the center side of the upper surface. Thus, a pair of second pressing rollers 63 that press the other sheet 102 against the other surface (upper surface) of the nozzle 61 is provided. Thereby, even if the nozzle 61 blows out air, the both ends of the width direction of the sheet | seat 10 for buffer materials are pressed by the 1st press roller 62 and the 2nd press roller 63 in the state conveyed.
The urging means for urging the first pressing roller 62 and the second pressing roller 63 is usually configured to include a pair of rods and a compression spring, but is not particularly limited. The urging means is usually fixed to the nozzle 61.

Further, the nozzle 61 has a discharge port 611 formed on the end face on the center side, and discharges air from the blower 64 accommodated in the housing 2 through a hose, a valve (not shown), or the like. Discharge from.
Here, the discharge port 611 has an upstream end positioned on the downstream side of the upstream first pressing roller 62 and the second pressing roller 63 and a downstream end positioned on the downstream side. It is located downstream from the first pressing roller 62 and the second pressing roller 63. Further, the driven roller 73 of the welding means 7 and the conveying unit are transported to the downstream portion of the nozzle 61 (the downstream portion from the pressing point where the first pressing roller 62 and the second pressing roller 63 on the downstream side press the nozzle 61). An upper inclined surface and a lower inclined surface that are directed to the tangent to the roller 78 are formed. In this way, it is possible to effectively suppress the problem that the air discharged from the discharge port 611 leaks to the upstream side, and the downstream side first pressure roller 62, second pressure roller 63, driven roller 73, and transport. The problem that the air supplied to the air chamber 12 escapes between the rollers 78 can be effectively suppressed.

(Welding means)
The pair of welding means 7 includes a first belt 74 and a second belt 79, and a first belt 74 and a second belt 79 that convey the cushioning material sheet 10 supplied with air to the air chamber 12. The first heating means 71 and the second heating means 76 for heating the cushioning material sheet 10 are provided respectively, and are provided facing the downstream side of the air supply means 6 (see FIG. 5). The positions of the first belt 74 and the second belt 79 and the first heating means 71 and the second heating means 76 in the width direction are closer to the center than the first pressing rollers 62 and the second pressing rollers 63 ( That is, it corresponds to the air supply port 13 of the cushioning material sheet 10). In the present embodiment, the first belt 74 is driven by the torque from the motor 721, and the second belt 79 is driven by the first belt 74.

The motor 721 is provided below the substrate 21 and rotates a transmission shaft 722 provided below the substrate 21 via a pulley and a timing belt. The transmission shaft 722 has pulleys fixed at both ends, and rotates the driving roller 72 via the pulley and the timing belt.
The driving roller 72 and the driven roller 73 are pivotally supported by the lower frame 22 fixed to the upper surface of the substrate 21, and the first belt 74 is hung on the shaft. The first belt 74 is in a state of being stretched by an urging roller 741.

The second belt 79 is hung by a conveying roller 77 positioned above the driving roller 72 and a conveying roller 78 positioned above the driven roller 73 and is in a state of being stretched by the urging roller 791. . Further, the transport roller 77 and the transport roller 78 are pivotally supported by the upper frame 23.
The upper frame 23 is rotatably connected to the lower frame 22 via a connecting member 24 attached to the downstream side of the lower frame 22 and a rotating shaft 25 protruding from the connecting member 24. Thereby, when setting the cushioning material sheet 10, the upper frame 23 can be rotated upward, and the cushioning material sheet 10 can be easily set. After the cushioning material sheet 10 is placed on the first belt 74, the upper frame 23 is rotated downward, and the upstream side of the upper frame 23 is connected to the lower frame via a locking means (not shown). 22 is locked.

The first heating means 71 includes a belt-like heater 712 extending along the longitudinal direction of the cushioning material sheet 10, a base 711 having a contact surface (a contact surface facing upward) to which the heater 712 is attached, and the heater 712. A temperature sensor (not shown) for measuring the temperature of the heater, a temperature control device (not shown) for controlling the temperature of the heater 712 based on an input signal from the temperature sensor, and the like. It is fixed to.
In addition, the base body 711 of this embodiment is a substantially oval thick plate shape made of a heat resistant resin or the like, and the heater 712 is attached to be wound around the outer peripheral surface of the base body 711.
In addition, the base 711 has a pair of recesses formed at substantially the center of the surface facing the contact surface, both ends of the heater 712 are fixed, and external connection electrodes (not shown) are formed. ing.

Here, preferably, the width dimension of the contact surface is wider than the width dimension of the heater 712, and the heater 712 is attached to the center of the contact surface in the width direction.
In this way, the first heating means 71 includes a belt-like heater 712 extending along the longitudinal direction, and a belt-like contact surface located on both sides (outside and inside) of the heater 712 and extending along the longitudinal direction. The pair of portions abut against the first belt 74. Therefore, one sheet (lower sheet) and the other sheet (upper sheet) of the cut cushioning material sheet 10 are brought into close contact with each other by the wide contact surface, and the center in the width direction of the corresponding contact surface is Since it is heated, it is possible to avoid the problem that damage occurs between the heated part and the non-heated part.

  The second heating unit 76 has substantially the same configuration as the first heating unit 71, and includes a heater 712, a base 711, a temperature sensor (not shown), a temperature control device (not shown), and the like. ing. However, the base body 711 of the second heating means 76 has a contact surface facing downward, and a heater 712 is attached to this lower surface. The second heating unit 76 includes a biasing unit 761 that biases the base body 711 downward, and is attached to the upper frame 23 via the biasing unit 761. Further, the urging means 761 is usually configured to have a pair of rods and a compression spring, but is not particularly limited.

In the present embodiment, the first heating unit 71 and the second heating unit 76 are provided. However, the first heating unit 71 or the second heating unit 76 may be used. For example, when only the second heating unit 76 is provided, the first heating unit 71 does not include a heater 712 for heating, a temperature sensor (not shown), and a temperature control device (not shown). Usually, it has the base | substrate 711 which functions as a cradle. Even in this case, one sheet 101 and the other sheet 102 of the cut cushioning sheet 10 can be welded.
Although not shown, the welding means 7 and the like are usually covered with a protective cover or the like.

Next, operation | movement of the shock absorbing material manufacturing apparatus 1 of the said structure is demonstrated with reference to drawings.
First, the cushioning material manufacturing apparatus 1 is in a stopped state, and a roll-shaped cushioning material sheet 10 is attached to the unwinding means 3 by a user. That is, one or both threaded shots 32 are rotated so that the rotation support member 33 moves to the end side, and then the roll-shaped cushioning material sheet 10 is placed on the support roller 34, Subsequently, one or both of the threaded photographs 32 are rotated so that the rotation support member 33 moves toward the center, and the pair of rotation support members 33 rotatably support the roll-shaped cushioning material sheet 10. To do.

Here, FIG. 6 shows a schematic enlarged cross-sectional view of the main part for explaining the operation of the shock absorbing material manufacturing apparatus according to the embodiment of the present invention. FIG. 6 is a cross-sectional view of the left end portion of the cushioning material sheet 10 as viewed from the upstream side.
As shown to Fig.6 (a), as for the roll-shaped sheet | seat 10 for buffer materials, the both ends of the width direction are connected, and the sheets have overlapped between both ends.

  Next, the cushioning material sheet 10 is unwound from the end in the conveying direction by the user and is hung on the pair of rollers 35. Subsequently, in the cushioning material sheet 10, each guided portion 14 is inserted into the guide bar 41 via the meandering prevention means 43, and is moved in the conveyance direction by the user. At this time, since the cushioning material sheet 10 is substantially stretched in the width direction by the meandering prevention means 43, it is possible to effectively eliminate the problem of being set in a meandering state. Therefore, the user can easily and smoothly pull the cushion material sheet 10 at both ends (portions inside the guided portion 14) in the transport direction.

Next, the cushioning material sheet 10 is pulled by the user until it passes through the guide roller 42, the cutter 5, the air supply means 6 and the welding means 7. Here, the guide roller 42 can apply a tension in the longitudinal direction to the guided portion 14 on the downstream side of the guide roller 42, so that the cutter 5 can easily guide the guided portion 14 and It can be cut reliably. The cut guided portion 14 is smoothly held between the first pressing roller 62 and the second pressing roller 63. Furthermore, since the welding means 7 is in the state in which the upper frame 23 is rotated upward and opened, the cushioning material sheet 10 is easily pulled along the first belt 74.
Subsequently, the user turns the upper frame 23 downward and closes it. Thereby, the cushioning material sheet 10 is set in the cushioning material manufacturing apparatus 1.

  Next, the user turns on an operation switch (not shown) of the shock absorber manufacturing apparatus 1. In the buffer material manufacturing apparatus 1, the rotational speed of the motor 721 and the heating temperature of the heater 712 are set in advance. Normally, the shock absorber manufacturing apparatus 1 controls the temperature control device to heat the heater 712 when an operation switch (not shown) of the shock absorber manufacturing apparatus 1 is turned on. And the motor 721 is operated and it will be in an operation state.

  The shock absorbing material manufacturing apparatus 1 in the operating state conveys the shock absorbing material sheet 10 with the first belt 74 and the second belt 79 sandwiching the end in the width direction of the shock absorbing material sheet 10. The roll-shaped cushioning material sheet 10 is unwound from the unwinding means 3 when the first belt 74 and the second belt 79 pull the cushioning material sheet 10. The cushioning material sheet 10 unwound from the unwinding means 3 is guided by the upper presser bar 431 and the lower presser bar 432 of the meandering prevention unit 43 so that the guide bar 41 is smoothly inserted into the guided portion 14. (See FIG. 6B). Furthermore, the cushioning material sheet 10 is substantially stretched in the width direction by the meandering prevention means 43, and is therefore conveyed without being meandered.

  Next, the cushioning material sheet 10 passes through the guide roller 42, and the guided portion 14 is cut by the guide means 4 (see FIG. 6C). Here, since the guided portion 14 on the downstream side of the guide roller 42 is given tension in the longitudinal direction by the guide roller 42, the guided portion 14 is easily and reliably cut by the cutter 5. Is done.

Next, the air supply means 6 supplies air to the air chamber 12 through the air supply port 13 (see FIG. 6D).
Here, the protruding portion on the tip side of the nozzle 61 guides one sheet 101 (lower sheet) of the cut cushioning material sheet 10 to the lower surface of the nozzle 61, and the cut cushioning material sheet 10. The other sheet 102 (upper sheet) is guided to the upper surface of the nozzle 61. The pair of first pressing rollers 62 presses the lower sheet 101 against the lower surface of the nozzle 61, and the pair of second pressing rollers 63 presses the upper sheet 102 against the upper surface of the nozzle 61. Thereby, even if the nozzle 61 blows out air, the both ends of the width direction of the sheet | seat 10 for buffer materials are pressed by the 1st press roller 62 and the 2nd press roller 63 in the state conveyed.

Further, in the nozzle 61, a discharge port 611 formed on the end surface on the center side discharges air from the blower 64.
Here, the discharge port 611 has an upstream end positioned on the downstream side of the upstream first pressing roller 62 and the second pressing roller 63 and a downstream end positioned on the downstream side. It is located downstream from the first pressing roller 62 and the second pressing roller 63. Further, the driven roller 73 and the conveying roller 78 are disposed on the downstream portion of the nozzle 61 (the downstream portion from the pressing point where the first pressing roller 62 and the second pressing roller 63 on the downstream side press the nozzle 61). An upper slope and a lower slope facing the tangent line are formed. Thereby, the trouble that the air discharged from the discharge port 611 leaks to the upstream side can be effectively suppressed, and the first pressing roller 62, the second pressing roller 63, the driven roller 73, and the conveying roller 78 on the downstream side. The problem that the air supplied to the air chamber 12 escapes can be effectively suppressed.

  Next, the pair of welding means 7 convey the first belt 74 and the second belt 79 with the cushioning material sheet 10 supplied with air sandwiched between the air chamber 12, and the first heating means 71 and the second belt 79. The two heating means 76 heats the cushioning material sheet 10 via the first belt 74 and the second belt 79 to form the seal portion 17 (see FIG. 1) extending in the longitudinal direction, whereby the air supply port 13 is Sealed and air is sealed in the air chamber 12. And a pair of welding means 7 carries out the sheet | seat 10 for buffer materials with which air was sealed to the air chamber 12. FIG.

  Here, as described above, the first heating means 71 and the second heating means 76 have a width dimension of the contact surface wider than that of the heater 712, and the heater 712 is located at the center of the contact surface in the width direction. It is attached (see FIG. 6 (e)). Thereby, the 1st heating means 71 and the 2nd heating means 76 are located in the strip | belt-shaped heater 712 extended along a longitudinal direction, and the strip | belt-shaped which is located in the both sides (outer side and inner side) of this heater 712, and extends along a longitudinal direction. The pair of portions of the abutting surface abuts on the first belt 74 and the second belt 79. Accordingly, one sheet 101 (lower sheet) and the other sheet 102 (upper sheet) of the cut cushioning sheet 10 are brought into close contact with each other by the wide contact surface, and the width direction of the corresponding contact surface is reduced. Since the center is heated, it is possible to avoid a problem that damage occurs between the heated portion and the non-heated portion.

Next, when the user manufactures the buffer material to be used, the user turns off the operation switch (not shown) of the buffer material manufacturing apparatus 1. Thus, when the user uses the buffer material, the user can operate the buffer material manufacturing apparatus 1 to manufacture the amount of the buffer material to be used. Therefore, the user does not have to secure a storage space for storing the buffer material. As a result, space can be saved. Further, when the transportation cost of the cushioning material from the cushioning material manufacturer to the user is compared with the transportation cost of the roll-shaped cushioning material sheet 10, the transportation cost of the rolled cushioning material sheet 10 is significantly low. , Can improve economy. Furthermore, transportation energy (usually gasoline and light oil) can be reduced.
In addition, the cushioning material sheet 10 (that is, usable cushioning material) manufactured by the cushioning material manufacturing apparatus 1 can be easily separated along the longitudinal direction or the width direction. Therefore, the cushioning material manufacturing apparatus 1 can manufacture the cushioning material sheet 10 excellent in usability and the like, and can improve the added value as a product.

  As described above, according to the cushioning material manufacturing apparatus 1 of the present embodiment, air can be supplied to the air chamber 12 from both sides in the width direction of the cushioning material sheet 10, and productivity and added value as a product. Etc. can be improved.

[One Embodiment of Manufacturing Method of Buffer Material]
Further, the present invention is also effective as an invention of a method for manufacturing a cushioning material.
The shock absorber manufacturing method of the present embodiment supplies air to the air chamber 12 from both sides in the width direction of the shock absorber sheet 10 while transporting the shock absorber sheet 10 using the shock absorber manufacturing apparatus 1 described above. In addition, the cushioning material is produced by sealing the air supply port 13 of the expanded air chamber 12.

Next, the manufacturing method of the shock absorbing material of this embodiment is demonstrated with reference to drawings.
FIG. 7: has shown the schematic flowchart figure for demonstrating the manufacturing method of the shock absorbing material concerning embodiment of this invention.
In FIG. 7, the cushioning material manufacturing method of the present embodiment first transports the cushioning material sheet 10 in a state where both ends in the width direction are guided (step S <b> 1). That is, as described above, the guide unit 4 conveys the cushioning sheet 10 in a state in which both end portions (guided portions 14) in the width direction are guided. In the present embodiment, the guide unit 4 conveys the guided portion 14 while guiding it, but the guide unit 4 is not limited to the above configuration.

  Next, both ends in the width direction of the cushioning material sheet 10 are cut (step S2). That is, the cutter 5 cuts the guided portion 14 that is stretched in the longitudinal direction by the guide roller 42.

Next, air is supplied to the air chamber 12 from both sides in the width direction of the cushioning material sheet 10 (step S3). That is, the air supply means 6 presses the cushioning material sheet 10 from which the first pressing roller 62 and the second pressing roller 63 are cut against the nozzle 61, and discharges the cushioning material sheet 10 in a state where the cushioning material sheet 10 is movably held. Air is discharged from the outlet 611, and air is supplied to the air chamber 12 from both sides of the cushioning material sheet 10 in the width direction. Thus, the air chamber 12 located on the left side of the cushioning material sheet 10 is supplied with air from the left air supply means 6, and the air chamber 12 located on the right side is supplied with air from the right air supply means 6. Therefore, the production speed can be increased and the productivity can be improved.
In the present embodiment, the air supply unit 6 supplies air to the air chamber 12 from both sides in the width direction of the cushioning material sheet 10, but the air supply unit 6 is not limited to the above configuration.

Next, the air supply port 13 of the air chamber 12 is sealed, and the air is sealed in the air chamber 12 (step S4). That is, the welding means 7 conveys the first belt 74 and the second belt 79 with the cushioning sheet 10 supplied with air sandwiched between the air chamber 12, and the first heating means 71 and the second heating means. 76 heats the cushioning material sheet 10 via the first belt 74 and the second belt 79 to form the seal portion 17 (see FIG. 1) extending in the longitudinal direction, whereby the air supply port 13 is sealed, Air is sealed in the air chamber 12. In the present embodiment, the welding means 7 seals the air supply port 13 and seals the air in the air chamber 12, but the welding means 7 is not limited to the above configuration.
Subsequently, the pair of welding means 7 carries out the cushioning material sheet 10 in which air is sealed into the air chamber 12.

  As described above, according to the cushioning material manufacturing method of the present embodiment, air can be supplied to the air chamber 12 from both sides of the cushioning material sheet 10 in the width direction, which can improve productivity and the like. it can.

Although the invention has been described with reference to preferred embodiments, the present invention is not limited to the embodiments described above, it is needless to say various modifications are possible within the scope of the present invention .
For example, although the cushioning material manufacturing apparatus 1 and the cushioning material manufacturing method use the cushioning material sheet 10, the cushioning material sheet is not limited to this, and the cushioning material sheet used is an air chamber in the longitudinal direction. Is a belt-shaped cushioning material sheet in which air is supplied to the air chamber from both sides in the width direction, and the air chamber only has to have an air supply port on the end side in the width direction. .
For example, the cushioning material sheet may have a substantially triangular air chamber 12a shown in FIG. Further, as shown in FIG. 8B, the cushioning material sheet has air chambers 12b (for example, substantially trapezoidal air chambers 12b) arranged in a line in the longitudinal direction, and the air supply port 13 on the right side. The air chamber 12b having the air inlet and the air chamber 12b having the air supply port 13 on the left side may be alternately arranged. Even in this case, productivity and the like can be improved.

1 Buffer material manufacturing device 2 Housing
3 Unwinding means
4 Guide means
5 Cutter
6 Air supply means 7 Welding means 10, 10a, 10b Buffer material sheet 11 Welding part
12, 12a, 12b Air chamber
13 Air supply port
14 Guided part
15 Longitudinal perforation
16 Width direction perforation 17 Seal portion 21 Substrate
22 Lower frame
23 Upper frame
24 connecting member
25 Rotating shaft
31 Unwinding shaft
32 Taking pictures with screws
33 Rotating support member
34 Support roller
35 Laura
41 Guide bar
42 Guide roller
43 Means for preventing meandering
61 Nozzle 62 First Pressing Roller 63 Second Pressing Roller 64 Blower 71 First Heating Means
72 Drive roller
73 Followed roller
74 First belt 76 Second heating means 77, 78 Conveying roller 79 Second belt
101, 102 Sheet 311 Housing 431 Upper presser bar 432 Lower presser bar 611 Discharge port 711 Base 712 Heater 721 Motor 722 Transmission shaft 741, 791 Energizing roller 761 Energizing means

Claims (8)

Air chambers are provided side by side in the longitudinal direction, and have a pair of guided portions extending in the longitudinal direction between both ends in the width direction and the air chamber, and the air chamber is disposed on the end side in the width direction. While conveying a belt-shaped cushioning material sheet having an air supply port communicating with the guided portion , air is supplied to the air chamber from both sides in the width direction of the cushioning material sheet, and the expanded air chamber a buffer material manufacturing apparatus for sealing the air inlet,
Guide means having a pair of cylindrical or rod-shaped guide members that are inserted into the guided portion and guide both end portions in the width direction of the cushioning material sheet;
A pair of cutting means for cutting both ends in the width direction of the cushioning material sheet;
A pair of air supply means positioned between one cut sheet and the other sheet of the cushioning material sheet and having a nozzle for supplying air to the air chamber via the air supply port;
A first belt and a second belt that are conveyed while sandwiching the cushioning sheet supplied with air, and a heating unit that heats the cushioning sheet via the first belt and / or the second belt A pair of welding means having, in order from the upstream side in the conveying direction ,
The distance between the pair of guide members is set shorter than the width dimension of the cushioning sheet,
An upper presser member between the pair of guide members facing each other, pressing the center part in the width direction of the cushioning material sheet from the upper side and moving it downward from a virtual plane including the center line of the pair of guide members; An apparatus for manufacturing a cushioning material , comprising: meandering prevention means having a lower pressing member that holds both sides of the cushioning material sheet in the width direction from below and holds them on the virtual plane .   2. The air supply means includes first pressing means for pressing the one sheet against one surface of the nozzle, and second pressing means for pressing the other sheet against the other surface of the nozzle. The shock-absorbing material manufacturing apparatus according to 1.   The first pressing means of the air supply means has a pair of first pressing rollers, the second pressing means has a pair of second pressing rollers, and the upstream end of the discharge port of the nozzle is The upstream side first pressure roller and the second pressure roller are located on the downstream side, and the downstream end of the nozzle outlet is the downstream side first pressure roller and second pressure roller. The shock absorber manufacturing apparatus according to claim 2, further comprising a slope formed at a downstream portion of the nozzle.   The heating means is based on a belt-shaped heater extending along the longitudinal direction, a base having a contact surface to which the heater is attached, a temperature sensor for measuring the temperature of the heater, and an input signal from the temperature sensor, A temperature control device for controlling a temperature of the heater; a width dimension of the contact surface is wider than a width dimension of the heater; and the heater is attached to a center in a width direction of the contact surface. The shock absorbing material manufacturing apparatus according to any one of claims 1 to 3. 5. The guide member according to claim 1, further comprising: a guide pressing member that presses the guided portion against the guide member and applies a longitudinal tension to the guided portion. The shock absorber manufacturing apparatus according to one item. The cushioning material manufacturing apparatus according to any one of claims 1 to 5 , wherein the cushioning material sheet has the air chambers arranged in two rows in the longitudinal direction. The cushioning material manufacturing according to any one of claims 1 to 6 , wherein the cushioning material sheet has a roll shape and has unwinding means for unwinding the roll-shaped cushioning material sheet. apparatus. Air chambers are provided side by side in the longitudinal direction, and have a pair of guided portions extending in the longitudinal direction between both ends in the width direction and the air chamber, and the air chamber is disposed on the end side in the width direction. Using a band-shaped cushioning material sheet having an air supply port communicating with the guided portion,
A guide member is inserted into the guided portion to guide both ends in the width direction of the cushioning material sheet, and a distance between the pair of guide members is set shorter than a width dimension of the cushioning material sheet. The buffer material sheet is pressed from the upper side between the pair of guide members facing each other from above and moved downward from a virtual plane including the center line of the pair of guide members. Cutting both ends in the width direction of the sheet for cushioning material while transporting in a state of holding the parts on both sides in the width direction of the sheet for holding from the lower side ,
Air is supplied to the air chamber through the air supply port from a nozzle located between the one sheet and the other sheet that is cut of the cushioning material sheet,
A method of manufacturing a cushioning material, wherein the air supply port of the expanded air chamber is sealed, and the air is sealed in the air chamber.

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