JP5437840B2 - Dunage - Google Patents

Description

  The present invention relates to a dunnage that is used for transporting a workpiece and configured so that the workpiece can be placed thereon.

  Conventionally, it is known that a dunnage is used in transporting a workpiece (see, for example, Patent Document 1). For example, the dunnage 71 shown in FIG. 13 includes a bottom wall portion 72 and a side wall portion 73 extending upward from the outer peripheral edge of the bottom wall portion 72, and an accommodation recess 74 capable of accommodating the lower portion of the work 80 inside. Have.

  Further, as shown in FIGS. 14A and 14B, regarding the dunnage 71a used for transporting the workpiece 80a having the flange portion 81 protruding from the outer peripheral surface, the side wall portion from the upper edge portion of the side wall portion 73 is used. It is also conceivable that the flange portion 81 is supported by the support portion 75 extending to the outer peripheral side of 73.

JP 2003-221036 A

  However, generally, the side wall part 73 is formed in a tapered shape for convenience of die cutting. For this reason, regarding the dunnage 71 shown in FIG. 13, when the workpiece 80 is accommodated in the accommodating recess 74 and transported, the lower end portion (corner portion) of the workpiece 80 and the lower end portion of the sidewall portion 73 (the sidewall portion 73 and the bottom wall). There is a risk that scraping of the dunnage 71 may occur due to rubbing against the boundary portion with the portion 72. In this case, there is a concern that the shaving residue may cause problems such as adhering to the lower end portion of the workpiece 80. In particular, when the lower end portion of the workpiece 80 is a mating surface (sealing surface / connection surface) with the mating member, it is necessary to carefully remove the attached shavings, which may cause a significant decrease in manufacturing workability. There is.

  Further, with respect to the dunnage 71a shown in FIG. 14, since the side wall 73 is inclined, the lower end (corner) of the workpiece 80a and the side wall 73 may be rubbed to generate scraped scraps of the dunnage 71a. . However, since the dunnage 71a shown in FIG. 14 is configured to support the flange portion 81 by the support portion 75, the lower end portion of the workpiece 80a and the bottom wall portion 72 can be separated from each other, and the bottom portion 72 has dropped. It is possible to suppress a situation in which the shaving residue of the dunnage 71a adheres to the lower end portion of the workpiece 80a. However, the shavings of the dunnage 71a generated when rubbing against the lower end portion of the workpiece 80a may not adhere to the bottom wall portion 72 and directly adhere to the workpiece 80a, and the adhesion of the shavings cannot be completely eliminated. There is concern.

  Further, in the dunnage 71 a shown in FIG. 14, although the flange portion 81 is supported by the support portion 75, the side wall portion 73 is inclined so that the support portion 75 is brought into contact with the vicinity of the root portion of the flange portion 81. It is virtually impossible to do so. For this reason, when the support area by the flange part 81 is not enough etc., there exists a possibility that the workpiece | work 80a cannot be supported stably.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a dunnage that can prevent scraps generated by rubbing against a workpiece from adhering to the workpiece. .

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1 . It is configured to be able to place a workpiece provided with a stepped portion protruding outward from the outer peripheral surface, and is a dunnage formed entirely by vacuum forming,
A regulating wall portion capable of regulating relative movement of the workpiece in the horizontal direction;
A support wall portion extending from the upper edge portion of the restriction wall portion in a direction intersecting with the restriction wall portion, and capable of supporting the stepped portion of the workpiece;
The regulation wall portion includes a regulation protrusion that can contact a portion of the outer peripheral surface of the workpiece that is above the lower end portion ,
The restricting protrusion is formed to protrude from the restricting wall so as to extend the support wall toward the inner peripheral side of the workpiece, and the upper surface of the restricting protrusion is flush with the upper surface of the support wall. And
The leading end of the restricting protrusion in the projecting direction is more than the portion of the restricting wall portion where the stepped portion is at the same height as the lower end portion of the work in a state where the stepped portion is supported by the supporting wall portion. A dunnage that is located on the inner circumference side.

According to the means 1, the restricting protrusion that can contact the upper part of the outer peripheral surface of the workpiece placed on the dunnage above the lower end is formed. It is located on the inner peripheral side of the workpiece from the lower end of the wall. For this reason, even if the workpiece is relatively displaced so as to be close to the regulating wall portion, the outer peripheral surface of the workpiece and the regulating projection are brought into contact with each other and further displacement is regulated. That is, it is possible to avoid contact (rubbing) between the lower end portion of the workpiece and the regulation wall portion. Accordingly, it is possible to fundamentally eliminate the situation where the scraping scraps of the workpiece are generated due to rubbing between the lower end portion of the workpiece and the regulating wall portion, and the scraping scraps adhere to the workpiece. As a result, it is not necessary to perform the operation of removing the scraped scraps of the dunnage attached to the workpiece, and the manufacturing workability can be improved.

Further, the entire dunnage of this means is integrally formed by vacuum forming. For this reason, simplification and cost reduction of a manufacturing facility including a mold apparatus used for forming a dunnage, improvement in productivity, and the like can be achieved.

In order to achieve the effect of the means 1 more reliably, “the restriction protrusion is not limited to the outer peripheral surface of the work even when the work is relatively moved in any direction in the horizontal direction. It is desirable that it is provided so that it can come into contact with the protrusion.

Also, since the support wall portion provided at the upper edge portion of the restricting wall portion is configured to support the stepped portion of the work, it is possible to separate the lower end portion of the workpiece and Danejji (bottom wall portion). For this reason, the situation where the dust etc. which accumulated on the dunnage (bottom wall part) adheres to the lower end part of a work can be prevented. Furthermore, although the possibility of occurrence is low compared with the case where the lower end portion (corner portion) of the workpiece and the regulating wall portion (boundary portion between the regulating wall portion and the bottom wall portion) rub, the lower end portion of the workpiece ( It is possible to completely wipe out a situation in which scraping scraps of the dunnage are generated by rubbing the bottom surface) and the bottom wall of the dunnage.

Moreover, according to the said means 1 , the upper surface side of a control protrusion functions also as a part of support wall part. Therefore, the support wall portion including the upper surface side of the restricting protrusion can be brought into contact with the vicinity of the root portion of the stepped portion of the workpiece. That is, the contact area between the support wall portion and the stepped portion can be increased, and the support state of the workpiece (the placement state on the dunnage) can be stabilized. As a result, operational effects such as improvement in transport workability are achieved. Further , the upper surface of the support wall and the upper surface of the restricting protrusion are flush with each other (there is no step between them) .

Means 2 . The dunnage according to claim 1 , wherein the lower surface of the restricting protrusion is inclined upward toward the tip end side of the restricting protrusion.

According to the means 2 , the restricting projection can be easily removed from the mold. Therefore, the dunnage can be extracted from the mold without subdividing the mold, and the manufacturing equipment can be simplified and the cost can be reduced.

It is the perspective view which looked at the dunnage from the upper part. It is the perspective view which looked at the dunnage from the lower part. It is the perspective view which looked at the work from the upper part. It is the perspective view which looked at the work from the lower part. It is a perspective view which shows the dunnage of the state which mounted the workpiece | work. It is a perspective view containing the partial cross section which shows the dunnage of the state which mounted the workpiece | work. It is sectional drawing which shows the dunnage of the state which mounted the workpiece | work. It is a partial expanded sectional view which shows the dunnage of the state which mounted the workpiece | work. It is a perspective view which shows the dunnage piled up. It is a perspective view containing the partial cross section which shows the dunnage piled up. It is sectional drawing which shows the dunnage piled up. It is a partial expanded sectional view which shows the dunnage piled up. It is sectional drawing which shows the conventional dunnage. It is sectional drawing which shows the conventional dunnage.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2, the dunnage 1 is provided with a substantially rectangular bottom wall portion 2 and three at a predetermined distance from each other in the longitudinal direction of the bottom wall portion 2. And a raised wall portion 4 that extends downward from the outer peripheral edge of the bottom wall portion 2, and an edge wall portion 5 that protrudes outward from the lower edge portion of the raised wall portion 4. The whole is integrally formed by vacuum forming.

  The dunnage 1 of the present embodiment is used for transporting a workpiece 21 (for example, an oil pan of an automobile engine) having a stepped portion 25 protruding outward from the outer peripheral surface as shown in FIGS. 3 and 4. The work 21 is configured to be placed thereon. More specifically, the workpiece 21 includes a substantially rectangular box-shaped main body portion 22 that opens downward, and a stepped portion 25 that protrudes outward from each side wall portion 24 of the main body portion 22. The main body portion 22 includes a base wall portion 23 having a substantially rectangular plate shape, and side wall portions 24 extending downward from each side portion of the base wall portion 23. Two stepped portions 25 are provided for each side wall portion 24, and are provided at positions slightly above the lower edge portion of the side wall portion 24 that is the opening side of the main body portion 22. In the present embodiment, when the work 21 is placed on a horizontal plane, the lower surface of the stepped portion 25 is formed to extend horizontally, and the outer peripheral surface (at least the stepped portion) of the main body portion 22 (side wall portion 24). The part below the shape part 25) extends vertically. Furthermore, the lower surface of the workpiece 21 in the present embodiment is a mating surface (seal surface / connection surface) with the mating member.

  As shown in FIGS. 1 and 2, the box-shaped convex portion 3 has a substantially rectangular parallelepiped shape that fits inside the work 21, and its longitudinal direction is the short direction of the bottom wall portion 2. Is formed. The box-shaped convex part 3 has a tapered shape so that the mold can be removed relatively easily. Further, the box-shaped convex portion 3 is formed at a position separated from the outer peripheral edge of the bottom wall portion 2 by a predetermined distance.

  Further, the dunnage 1 is formed with a plurality of support convex portions 6 so as to surround each box-shaped convex portion 3. Further, each support convex portion 6 is formed at a position separated from the box-shaped convex portion 3. In the present embodiment, one supporting convex portion 6 is provided so as to face both side portions of the outer peripheral surface of the box-shaped convex portion 3 and extending along the longitudinal direction of the box-shaped convex portion 3. Provided on each side of each of the outer peripheral surfaces of the box-shaped convex portion 3 and extending along the short direction of the box-shaped convex portion 3. One part is provided so as to partially face each other (two corresponding to one surface). In other words, each box-shaped convex portion 3 is surrounded by eight support convex portions 6.

  In addition, with respect to the support convex portion 6 positioned between the box-shaped convex portions 3 adjacent to each other, the support convex portion 6 corresponding to the central box-shaped convex portion 3 and the side of the box-shaped convex portion 3 are positioned. Supporting convex portions 6 corresponding to the box-shaped convex portions 3 are formed in a continuous manner. In other words, a total of 20 support protrusions 6 are formed in the dunnage 1 of the present embodiment.

  Each support convex portion 6 extends upward from the bottom wall portion 2 and faces the outer peripheral surface of the corresponding box-shaped convex portion 3. The regulation wall portion extends from the upper edge portion of the regulation wall portion 11. 11 and a support wall portion 12 extending in a direction crossing 11 (that is, constituting the upper surface of the support convex portion 6). The support convex portion 6 is configured in a tapered shape like the box-shaped convex portion 3, and therefore, the regulation wall portion 11 is inclined upward in a direction away from the corresponding box-shaped convex portion 3. ing.

  Further, the support wall portion 12 extends in the horizontal direction in parallel with the bottom wall portion 2. Then, as shown in FIGS. 5 to 8, when the work 21 is placed on the dunnage 1 so that the box-shaped convex portion 3 is relatively inserted inside the work 21, the stepped portion 25 of the work 21 and the support are supported. The wall 12 is in contact with the top and bottom. Thereby, the workpiece | work 21 will be supported by the support wall part 12 (support convex part 6).

  As described above, the stepped portion 25 of the workpiece 21 is provided at a position slightly spaced upward from the lower end portion of the main body portion 22. For this reason, when the workpiece 21 is supported by the support convex portion 6 in the stepped portion 25, that is, in a state where it is placed on the dunnage 1, the lower end portion of the workpiece 21 is the regulation wall portion of each support convex portion 6. 11 and the box-shaped convex part 3 corresponding to this (11). Furthermore, in this embodiment, as shown in FIG. 8 etc., the protrusion length from the bottom wall part 2 of the support convex part 6 is based on the distance from the lower surface of the step part 25 of the workpiece | work 21 to the lower end part of the main-body part 22. The lower end portion of the workpiece 21 placed on the dunnage 1 and the bottom wall portion 2 of the dunnage 1 are separated upward.

  Now, as shown in FIG. 8 and the like, the restriction wall 11 of each support protrusion 6 is formed on the side of the corresponding box-shaped protrusion 3 from the restriction wall 11 (inside the workpiece 21 placed on the dunnage 1). A regulating projection 13 projecting to the circumferential side) is provided. The restricting protrusion 13 is directed toward the upper side 13a formed so as to extend the support wall 12 toward the box-shaped convex portion 3 and toward the tip end side (box-shaped convex portion 3 side) of the restricting protrusion 13. And a lower side portion 13b extending obliquely upward, and has a substantially F-shaped cross section as a whole. In addition, the upper surface of the restricting protrusion 13 is flush with the upper surface of the support wall portion 12. Furthermore, the protrusion direction front-end | tip part of the control protrusion 13 is the inner peripheral side of the workpiece | work 21 rather than the site | part which becomes the same height position as the lower end part of the workpiece | work 21 in the mounting state to the dunnage 1 among the control wall parts 11 ( It is located on the corresponding box-shaped convex part 3 side). In particular, in the present embodiment, the front end of the restricting protrusion 13 in the protruding direction is located on the inner peripheral side of the work 21 that is placed on the dunnage 1 with respect to the lower end of the restricting wall 11.

  The restricting protrusion 13 configured as described above can come into contact with a portion above the lower end portion of the outer peripheral surface of the workpiece 21 placed on the dunnage 1. Therefore, when the workpiece 21 placed on the dunnage 1 relatively moves in the horizontal direction, the outer peripheral surface of the workpiece 21 and the regulating projection 13 of the regulating wall portion 11 come into contact with each other. The above relative movement can be restricted. Further, as described above, since the plurality of regulating protrusions 13 are provided so as to surround the box-shaped convex portion 3 formed corresponding to the inner shape of the workpiece 21, the workpiece placed on the dunnage 1 is provided. The outer peripheral surface of the workpiece 21 can come into contact with any of the restricting protrusions 13 even when the 21 is relatively moved in any direction in the horizontal direction.

  In the present embodiment, of the pair of opposing side wall portions 24 of the workpiece 21, even if one of the side wall portions 24 is in contact with the regulating projection 13 of the support convex portion 6, The side wall portion 24 and the box-shaped convex portion 3 are configured not to contact each other. That is, the lower end portion (lower corner portion on the inner peripheral side) of the work 21 and the box-shaped convex portion 3 cannot be brought into contact with each other.

  Moreover, in this embodiment, as shown in FIGS. 9-12, it is also possible to pile up the several dunnage 1 up and down (stack). When a plurality of dunnages 1 are stacked, the box-shaped convex portion 3 of the lower dunnage 1 enters the inner space of the box-shaped convex portion 3 of the upper dunnage 1, and the peripheral wall portion of the box-shaped convex portion 3 They abut. As a result, the upper dunnage 1 is supported by the lower dunnage 1 and the relative displacement in the horizontal direction is also prevented.

  In addition, as shown in FIG. 1 and the like, the bottom wall portion 2 of the dunnage 1 has a concave portion that is recessed downward at a boundary portion with the raised wall portion 4 and at a portion between the three box-shaped convex portions 3. 16 is formed. The concave portion 16 improves the strength of the dunnage 1, and in the state where the dunnage 1 is stacked, fingers are formed at the concave portion 16 formed at the boundary between the bottom wall portion 2 and the raised wall portion 4. It is easy to pick up Dunge 1 one by one.

  Next, the manufacturing process of the dunnage 1 will be described. First, a sheet-like polyethylene having a thickness of 3 mm to 6 mm softened by heating and a female die having a molding surface for molding the lower surface of the dunnage 1 and having a plurality of suction holes are opposed to each other. . Subsequently, the polyethylene sheet is placed on the female mold, and the polyethylene sheet is brought into close contact with the molding surface of the female mold, so that the polyethylene sheet is molded into the desired uneven shape. That is, parts corresponding to the bottom wall portion 2, the box-shaped convex portion 3, the raised wall portion 4, and the support convex portion 6 (including the regulating protrusion 13) are formed. Then, after cooling and solidifying the polyethylene sheet, the female mold is separated from the polyethylene sheet. Finally, the polyethylene sheet is cut along the peripheral edge of the molded part by a trimmer (or a punching device), and the molded part is separated from the polyethylene sheet. The edge wall portion 5 is formed by cutting the polyethylene sheet along the peripheral edge of the molding portion so that the molding portion of the polyethylene sheet remains at the end edge of the raised wall portion 4 for a predetermined length. It will be. As described above, the dunnage 1 is obtained.

  As described above in detail, according to the present embodiment, the dunnage 1 is in contact with a portion of the outer peripheral surface of the work 21 (main body portion 22) placed on the dunnage 1 above the lower end. A possible restricting protrusion 13 is formed, and the protrusion direction front end of the restricting protrusion 13 is located closer to the inner peripheral side of the work 21 than the lower end portion of the restricting wall part 11 (the corresponding box-shaped convex part 3 side). Yes. For this reason, even if the workpiece 21 is relatively displaced so as to be close to the regulation wall portion 11, the outer peripheral surface of the workpiece 21 and the regulation projection 13 are brought into contact with each other and further displacement is regulated. That is, it is possible to avoid the lower end portion of the work 21 and the regulation wall portion 11 from abutting (rubbing). Therefore, the scraping of the dunnage 1 due to the rubbing of the lower end portion of the workpiece 21 and the regulating wall portion 11 and the scraping dust adhering to the workpiece 21 can be fundamentally eliminated. As a result, it is not necessary to perform the operation of removing the scraped scraps of the dunnage 1 attached to the workpiece 21, and the manufacturing workability can be improved.

  Further, in the present embodiment, a plurality of supporting convex portions 6 are provided so as to surround the box-shaped convex portion 3, and the workpiece 21 is moved even when the workpiece 21 placed on the dunnage 1 is relatively moved in any direction in the horizontal direction. The outer peripheral surface can be brought into contact with the restricting protrusion 13. For this reason, the said effect is more reliably show | played.

  Further, the entire dunnage 1 of the present embodiment is integrally formed by vacuum forming. For this reason, simplification and cost reduction of a production facility including a mold apparatus used for forming the dunnage 1 and improvement in productivity can be achieved.

  Furthermore, since the stepped portion 25 of the workpiece 21 is supported by the support wall portion 12 provided at the upper edge portion of the regulating wall portion 11, the lower end portion of the workpiece 21 and the bottom wall portion 2 of the dunnage 1 are separated from each other. Can be made. For this reason, the situation where the dust etc. which accumulated on the bottom wall part 2 adheres to the lower end part of work 21 can be prevented. Further, although the lower end portion (corner portion) of the workpiece 21 and the regulation wall portion 11 (boundary portion between the regulation wall portion 11 and the bottom wall portion 2) are rubbed, the possibility of occurrence is low. It is possible to completely wipe off the situation where scraping of the dunnage 1 occurs due to rubbing between the lower end portion (lower surface) 21 and the bottom wall portion 2 of the dunnage 1.

  Further, the upper side portion 13a of the restricting protrusion 13 is formed to protrude from the restricting wall portion 11 so as to extend the support wall portion 12 to the corresponding box-shaped convex portion 3 side. For this reason, the upper side portion 13 a of the regulation protrusion 13 also functions as a part of the support wall portion 12. Therefore, the support wall portion 12 including the upper side portion 13a of the regulation protrusion 13 can be brought into contact with the vicinity of the root portion of the stepped portion 25 of the work 21. That is, the contact area between the support wall portion 12 and the stepped portion 25 can be increased, and the support state of the workpiece 21 (the mounting state on the dunnage 1) can be stabilized. As a result, operational effects such as improvement in transport workability are achieved.

  Further, since the restricting protrusion 13 protrudes from the upper edge portion of the restricting wall portion 11, for example, compared to a case where the restricting protrusion portion 13 is provided below the upper edge portion of the restricting wall portion 11. The removal can be performed relatively easily. Furthermore, the lower side portion 13 b of the regulation projection 13 is inclined upward toward the tip end side of the regulation projection 13. For this reason, the restricting protrusion 13 can be more easily removed from the mold. Therefore, the dunnage 1 can be extracted from the mold without subdividing the mold, and the manufacturing equipment can be simplified and the cost can be reduced. Moreover, the upper surface of the upper side part 13a of the control protrusion 13 is formed flush with the upper surface of the support wall part 12 extending horizontally by inclining the lower side part 13b of the control wall part 11 as described above. Can do. That is, for convenience of die cutting, it is desirable that the restricting protrusion 13 be as small as possible. Further, since the dunnage 1 is formed by forming a sheet of polyethylene in a concave and convex shape by vacuum forming, a sheet-like shape is formed at the restricting protrusion 13. It is difficult to fold polyethylene and bring them into contact with each other. In other words, it is desirable that the restricting protrusion 13 has a substantially V-shaped cross section or a substantially F-shaped cross section. However, if the lower side portion 13b of the restricting protrusion 13 extends substantially horizontally, the restricting protrusion 13 becomes smaller. While configuring, it becomes difficult to extend the upper side portion of the restricting protrusion 13 horizontally to be flush with the support wall portion 12. On the other hand, by tilting the lower side 13b of the restricting protrusion 13 as described above as in the present embodiment, the restricting protrusion 13 is shaped like a cross-section, and the upper surface of the support wall portion 12 and the restricting protrusion are comfortably formed. The upper surface of the part 13 can be flush with the upper surface.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the shape of the dunnage 1 or the workpiece 21 placed on the dunnage 1 is not particularly limited, and the shape of the dunnage 1 can be appropriately changed according to the shape of the workpiece 21. However, the dunnage 1 includes a regulating wall portion 11 that can regulate the displacement movement of the workpiece 21 in the horizontal direction in a state where the workpiece 21 is placed on the dunnage 1, and the regulating wall portion 11 is a lower end of the workpiece 21. Suppose that the control protrusion 13 which can prevent contact | abutting of a part and the control wall part 11 is provided.

For example, the present invention can be applied to a dunnage used for transporting the work 21 without the stepped portion 25 (however, a reference example) . In this case, it is sufficient that there is a restriction wall portion 11 having at least the restriction protrusion 13, and the support wall portion 12 can be omitted. In this case, the lower end portion of the work comes into contact with the upper surface of the bottom wall portion 2 of the dunnage. However, as in the above embodiment, for the dunnage 1 used for transporting the workpiece 21 having the stepped portion 25, the lower end portion of the workpiece 21 is supported by supporting the stepped portion 25 with the support wall portion 12. Can be separated upward from the bottom wall 2 of the dunnage 1. In this case, it is possible to prevent a situation in which dust or the like accumulated on the bottom wall portion 2 adheres to the lower end portion of the workpiece 21.

  Moreover, in the said embodiment, although the outer peripheral surface of the workpiece | work 21 is a flat surface and the front-end | tip part of the step part 25 is located in the outermost peripheral side of the workpiece | work 21, for example, in the side wall part 24, it is a main body. A recessed portion that is recessed on the inner peripheral side of the portion 22 may be provided, and the stepped portion 25 may be formed in the recessed portion. Further, the formation position of the stepped portion 25 is not particularly limited, and for example, the stepped portion 25 formed at a different height position may be supported by the support convex portion 6. The dunnage 1 may be configured to be able to be placed in the same direction as the work 21 is actually used and mounted, or may be configured to be able to be placed in the upside down direction.

  Furthermore, in the above-described embodiment, the stepped portion 25 extends from a portion slightly above the lower end portion of the side wall portion 24. For example, the stepped portion 25 is located on the side wall portion 24 of the workpiece 21 in a state of being placed on the dunnage 1. You may comprise so that the step part 25 may extend from an edge. Even in this case, by placing the work 21 on the dunnage 1 so that the portion above the lower end of the side wall 24 of the work 21 placed on the dunnage 1 comes into contact with the regulating protrusion 13. The same effects as the above embodiment are exhibited. Further, in the present embodiment, the dunnage 1 on which the box-shaped workpiece 21 opened on one side (downward) is mounted is not specifically limited to this. For example, there is no interior space. You may apply to the dunnage which mounts an actual workpiece | work.

  (B) In the above embodiment, the plurality of support protrusions 6 are formed so as to surround the box-shaped protrusion 3, but the number, arrangement, shape, and the like of the support protrusions 6 are not particularly limited. For example, it is good also as forming a support convex part in frame shape so that the accommodation recessed part which can accommodate at least the lower part of the workpiece | work 21 is formed. That is, when the configuration is adopted, if the box-shaped convex portion 3 is omitted, the cross-sectional shape is as shown in FIGS. 13 and 14, but the configuration of the present embodiment is applied to the configuration of FIGS. 13 and FIG. 14 projecting from the side wall portion 73 to the inside of the housing recess 74, can be brought into contact with a portion above the lower end portion of the outer peripheral surface of the workpieces 80, 80a, and the front end portion in the projecting direction is the side wall portion. A restricting protrusion located on the inner peripheral side of the housing recess 74 from the lower end of 73 is provided.

  Moreover, in FIG. 1 etc., although the some support convex part 6 provided so that each box-shaped convex part 3 may be enclosed is arrange | positioned on both sides of the corresponding box-shaped convex part 3, it may be shifted | deviated and arrange | positioned. . However, when the workpiece 21 has a square box shape, the support convex portion 6 (the regulation projection 13) is in contact with four surfaces or / and four corner portions constituting the outer peripheral surface of the workpiece 21. In addition, it is desirable to be provided in a square frame shape or at a plurality of locations. In addition, for example, when the workpiece has a cylindrical shape, the support convex portion 6 (regulation protrusion 13) is annularly formed so as to surround the outer peripheral surface of the workpiece, or at least the workpiece placed on the dunnage 1. It is desirable that they are provided at three positions (at a pitch of 120 degrees) that are symmetrical with respect to the central portion. In this case, the outer peripheral surface of the work 21 can come into contact with the restricting protrusion 13 even when the work 21 is relatively moved in any direction in the horizontal direction, and the lower end portion of the work 21 and the support convex portion of the dunnage 1 are supported. 6 (regulating wall portion 11) can be prevented from being rubbed, and the situation where the scrap of the dunnage 1 adheres to the workpiece 21 can be reliably prevented.

  In addition, the restriction wall portion 11 may be configured to extend vertically from the bottom wall portion 2. However, in view of the workability of die cutting, it is desirable that the regulating wall portion 11 is not inclined toward the corresponding box-shaped convex portion 3 side, and corresponds to the upward direction as in the above embodiment. It is more desirable to incline in the direction away from the box-shaped convex part 3 to be performed. Moreover, in the said embodiment, although the control protrusion 13 protrudes from the upper edge part of the control wall part 11, you may comprise so that it may protrude from the site | part below the upper edge part. However, as in the above-described embodiment, by forming the restricting protrusion 13 on the upper edge of the restricting wall portion 11, when the die is removed from the mold, the remaining portion only has to be removed from the mold first. Can be pulled out from the mold relatively smoothly, so that it is possible to improve the die cutting workability. Furthermore, as described in the above (a), regarding the dunnage that transports the workpiece without the stepped portion 25, the restricting protrusion 13 is present at the upper edge of the restricting wall portion 11, so that the restricting protrusion 13 Since the upper part of the outer peripheral surface of the work can be supported as much as possible, it is possible to suppress a situation in which the work placed on the dunnage is relatively moved and tilts when it comes into contact with the restricting protrusion 13. .

(C) In the above embodiment, the regulation protrusion 13 formed on the support convex portion 6 is configured to abut against the outer peripheral surface of the workpiece 21, thereby preventing relative movement of the workpiece 21 in the horizontal direction. For example, the control projection 13 that protrudes outward from the outer peripheral surface of the box-shaped convex portion 3 is formed, and the control projection 13 abuts against the inner peripheral surface of the workpiece 21 so that the workpiece 21 is relatively moved in the horizontal direction. May be configured to be regulated (however, reference examples) . In this case, the restricting protrusion 13 can be in contact with a portion of the inner peripheral surface of the workpiece 21 that is above the lower end, and the tip end of the restricting protrusion 13 in the protruding direction is more than the lower end of the box-shaped convex portion 3. By being configured to protrude to the outer peripheral side of the box-shaped convex portion 3, the same effect as the above-described embodiment is achieved. In addition, when employ | adopting the said structure, the surrounding wall part which comprises the outer peripheral surface of the box-shaped convex part 3 comprises a control wall part. Further, the support convex portion 6 can be omitted.

  Further, when the work 21 includes a stepped portion that protrudes from the side wall portion 24 toward the inner peripheral side of the main body portion 22, the work 21 is supported by contacting the lower surface of the stepped portion with respect to the box-shaped convex portion 3. It is good also as providing the support wall part which can do.

  (D) In the above embodiment, when forming the dunnage 1, a female mold having a forming surface for forming the lower side surface of the dunnage 1 is used. However, a forming surface for forming the upper side surface of the dunnage 1 is used. You may use the male type which has.

  (E) In the above embodiment, the dunnage 1 is made of polyethylene, but may be made of other resin materials such as polypropylene, PET, and polyamide.

DESCRIPTION OF SYMBOLS 1 ... Dungege, 2 ... Bottom wall part, 3 ... Box-shaped convex part, 6 ... Support convex part, 11 ... Restriction wall part, 12 ... Support wall part, 13 ... Restriction protrusion part, 13a ... Upper side part, 13b ... Lower side part , 21 ... work, 22 ... body part, 24 ... side wall part, 25 ... stepped part.

Claims (2)

It is configured to be able to place a workpiece provided with a stepped portion protruding outward from the outer peripheral surface, and is a dunnage formed entirely by vacuum forming,
A regulating wall portion capable of regulating relative movement of the workpiece in the horizontal direction;
A support wall portion extending from the upper edge portion of the restriction wall portion in a direction intersecting with the restriction wall portion, and capable of supporting the stepped portion of the workpiece;
The regulation wall portion includes a regulation protrusion that can contact a portion of the outer peripheral surface of the workpiece that is above the lower end portion ,
The restricting protrusion is formed to protrude from the restricting wall so as to extend the support wall toward the inner peripheral side of the workpiece, and the upper surface of the restricting protrusion is flush with the upper surface of the support wall. And
The leading end of the restricting protrusion in the projecting direction is more than the portion of the restricting wall portion where the stepped portion is at the same height as the lower end portion of the work in a state where the stepped portion is supported by the supporting wall portion. A dunnage that is located on the inner circumference side. The lower surface of the restricting projection is Danejji according to claim 1, characterized in that it is upwardly inclined toward the front end portion of the restricting projection.

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