JP7309249B1 - METHOD OF MANUFACTURING RECEIVER MEMBER FOR TRANSPORT CONTAINER AND PREFORM USED THEREOF - Google Patents

Abstract

[Problem] To provide a manufacturing method of a receiving member that is difficult to reduce the strength of the part that supports a product or part and can be easily attached to a plate material that constitutes a transport container, and a preform used therein. [Solution] The preform 1 of the present invention is made of a plate material that is formed by injection molding of a thermoplastic resin and has a substantially rectangular shape in a plan view, and is equipped with a molding target part 2 that is processed into a desired shape by vacuum molding, a boundary part 3 that surrounds the molding target part 2 and is provided so as to protrude from a second surface 1b, and a first joint part 4 and a second joint part 10 that are provided between the boundary part 3 and side surfaces 1c, 1d corresponding to two parallel sides that constitute the rectangle, respectively. In addition, on the first surface 1a of the preform 1, thickness recesses 3a, 3a that are rectangular in plan view are provided symmetrically on both sides of the molding target part 2 at locations that correspond to the part that becomes thicker due to the boundary part 3 being provided on the second surface 1b. [Selected Figure] Figure 1

Description

TECHNICAL FIELD The present invention relates to a method of manufacturing a receiving member installed in a transport container for supporting products or parts, and more particularly, manufacturing of a receiving member for a transport container that is detachably attached to a plate member constituting the transport container. It relates to a method and a preform used therefor.

2. Description of the Related Art Containers used for transporting and transporting products (hereinafter referred to as transport containers) are often provided with receiving members for the purpose of preventing the products and parts from being damaged or damaged. In some cases, the receiving member is provided with a three-dimensional curved surface along the shape of the product or part so that the product or part can be reliably supported. However, since such receiving members are produced in small quantities in a wide variety of products, when they are manufactured by injection molding, there is a problem that it takes time to create a mold and the manufacturing cost increases.

As a solution to this problem, for example, Patent Document 1 discloses an invention titled "Motor Receiving Tray and Transfer Set", which relates to a vacuum-formed tray for receiving the lower part of a motor for running a vehicle. .
In the motor receiving tray disclosed in Patent Document 1, the support bulge that receives the weight of the motor is formed integrally with the tray body by vacuum forming, and the transport set has a plurality of motor receiving trays installed therein. structure.
The motor receiving tray having such a structure has the advantage of being less labor-intensive to manufacture than the conventional tray in which the supporting bulging portion is adhered to the tray body.

In addition, Patent Document 2 discloses an invention related to a transport container provided with a receiving member for supporting a product under the name of "product transport container".
The invention disclosed in Patent Document 2 includes a molded portion in which a portion of a thermoplastic sheet is formed in a convex shape by vacuum forming, and a skin member provided with ears left uncut on both outer sides of the molded portion, It is composed of a rib plate that covers the molded portion of the skin member, and has a structure in which the ear portion of the skin member is connected to the rib plate or the carrying container by a connecting member.
Since vacuum forming uses relatively inexpensive molds, it is suitable for small-lot manufacturing and can produce molds in a short time. Therefore, according to the invention disclosed in Patent Document 2, it is possible to manufacture the receiving member in a shorter time and at a lower cost than in the case of manufacturing the receiving member by injection molding.

Furthermore, Patent Document 3, titled "Manufacturing Method of Transporting Container", relates to a method of manufacturing a transporting container with a three-dimensional receiving material, a small number of parts, and easy sorting and disposal in a short delivery time. is disclosed.
The invention disclosed in Patent Document 3 includes a frame having a pedestal unit provided with openings in a pair of vertically spaced side walls, and a frame straddling the pedestal unit and having openings in the pair of side walls. In a method for manufacturing a transport container having receiving members in which claw portions are fitted to an upper frame, a rectangular forming main portion having a flat plate-like rising rib provided in a grid pattern in the plane; A flange portion provided to surround the main portion, and a pair of fitting structure portions provided outside a pair of sides of the forming main portion and bent perpendicularly downward from the flange portion in the vertical direction. a step of forming by injection molding a preform having claw portions respectively formed in the fitting structure portion; On the other hand, it is characterized by having a step of performing vacuum forming and a step of mounting the vacuum formed preform on the base unit as a receiving material.
According to such a transport container manufacturing method, the receiving material is attached to the pedestal unit by the joint shape portion of the preform and the cross beam, so the number of parts forming the transport container is reduced. This also facilitates separate disposal. Further, when the receiving material is formed by stretching the main molding portion vertically by vacuum forming, the main molding portion is prevented from becoming extremely thin due to the resin material being supplied from the ribs to the periphery. Therefore, the strength of the receiving material is improved.

JP 2020-179883 A Japanese Patent No. 7007006 Japanese Patent No. 7215795

In the motor receiving tray disclosed in Patent Document 1, when the support bulging portion is formed by vacuum forming, the wall thickness of the support bulging portion may become thin and the strength may decrease. In addition, since the motor receiving tray has a structure in which the support bulge is formed integrally with the tray body, the position of the support bulge cannot be changed, and there is a problem of low versatility. .
In the invention disclosed in Patent Document 2, there is a problem that the thickness of the skin member formed by vacuum forming is reduced, and the strength of the formed portion may be reduced. In addition, since the invention has a structure in which it is fixed using bolts and nuts to the fixing metal fittings installed in the transportation container, there is a problem that it takes time to install it in the transportation container and to remove it from the transportation container. rice field.
In the invention disclosed in Patent Document 3, there is a problem that the thickness of the receiving material becomes uneven because traces of the vertical lines and horizontal lines of the rib remain on the surface of the receiving material. Moreover, the receiving material manufactured by the said invention has the structure attached to the horizontal beam of a conveying container, and the subject that it cannot be attached to the board|plate material which comprises a conveying container occurred.

The present invention has been made in response to such conventional circumstances, and the strength of the portion that supports the product or parts does not easily decrease, and it is possible to easily attach it to the plate material that constitutes the transport container. An object of the present invention is to provide a method for manufacturing a receiving member and a preform used therefor.

In order to achieve the above object, a preform according to a first aspect of the present invention is a flat plate formed by injection molding of a thermoplastic resin and having a first surface and a second surface which are rectangular in plan view and parallel to each other. A molding target part in which a storage article receiving part is formed by vacuum forming, a first coupling part and a second coupling part provided on both sides of the molding target part, and parallel to the first surface. A projecting portion having a flat surface and provided on the first surface of the first coupling portion, and a rectangular opening provided on the flat surface with the molding target portion sandwiched between the second coupling portion. an engaging pawl provided symmetrically with the portion, the engaging pawl having a flat portion extending from the seat plate of the second coupling portion and bent at a right angle toward the first surface; an engaging portion extending from the flat portion so as to protrude in a direction away from the molding target portion when the plate is viewed in plan and bent at an acute angle toward the second surface; The joining portion is elastically deformed so as to reduce the angle formed by the two, so that it becomes a size that can be placed in the opening. It is characterized in that it becomes a size that can be engaged with.

In addition, in the first invention, the “flat plate material having a rectangular shape in plan view” and the “rectangular opening provided in the flat surface” are “flat plate material having a substantially rectangular shape in plan view” and “the flat plate material provided in the flat surface”. "A substantially rectangular opening" is included, and "the plane part bent at right angles to the first surface" includes "the plane part bent at an almost right angle to the first surface". do.
In the first invention, "the plane portion and the engaging portion have a size that allows them to be arranged in the opening" means that the plane portion and the engaging portion provided on the same preform are arranged in the opening. For example, when connecting a receiving member manufactured using the preform according to the first invention and another preform according to the first invention, one "flat portion and engaging portion ' can become positionable within the other 'opening'. Further, in the first invention, "the engagement claw has a size that can be engaged with the opening" means that the "engagement claw" provided on the same preform engages with the "opening". However, as in the case described above, when connecting the receiving member manufactured using the preform according to the first invention and another preform according to the first invention, one "engagement It means that one "claw" can become engageable with another "opening".
That is, in these descriptions, the receiving member manufactured using the preform according to the first invention and another preform according to the first invention are arranged so that the first surfaces face each other. A structure in which one "flat portion and engaging portion" can be arranged in the other "opening" and one "engaging claw" can engage with the other "opening" is meant to be

In this manner, the receiving member and the preform described above become inseparable from each other by engaging the engaging claws on one side with the openings on the other side. Therefore, when a certain plate member has a through hole in which the protruding portion of the preform and the engaging claw can be arranged, the receiving member and the preform are arranged so as to sandwich the plate member between them. At the same time, the above-described receiving member and preform are fixed to both surfaces of the plate by engaging the other engaging claw with the opening of one of the projecting portions through the through hole of the plate.
However, in the first invention, since the opening and the engaging claw are provided symmetrically across the molding target portion, one engaging claw is engaged with the opening of the other projecting portion. In this case, the other engaging claw is also engaged with one of the openings at the same time. Therefore, the preform having the above structure can be easily attached to the plate material used for the transport container by combining it with a receiving member manufactured from another preform having the same structure.
Further, in a state in which the receiving member and the preform are fixed to the plate material, if the engaging claw is elastically deformed so that the angle formed by the flat portion and the engaging portion becomes small, the opening between the engaging claw and the projecting portion is released, and the receiving member and the preform can be separated from each other. That is, the first invention can be attached to the plate material used in the transport container by combining it with a receiving member manufactured from another preform having the same structure. And, in the first invention, it has the effect of facilitating attachment and detachment.

A second invention is characterized in that, in the first invention, a plurality of protrusions having a constant thickness are provided on the part to be molded so as to protrude toward the second surface.
In the second invention, in addition to the effects of the first invention, the part to be molded is stretched using a vacuum forming mold so that the storage article receiving part for supporting products and parts is formed into the part to be molded. When the container is formed, the projecting portion is crushed by the mold, and as a result of supplying the resin material of that portion to the surroundings, the stored article receiving portion is prevented from being thinned. In addition, since the thickness of the protrusion is constant, unlike the preform described in Patent Document 3, in which the thickness of the forming main portion differs depending on whether or not there is a rib, in the second invention, the protrusion has a uniform thickness. Since the thickness of the portion is constant, there is an effect that the thickness of the article receiving portion formed by vacuum forming becomes uniform.

In a third invention, in the first invention, a contact portion having a constant thickness is provided in the molding target portion so as to protrude toward the first surface, and the contact portion is located between the first surface and the molding target portion. It is characterized by having parallel abutment surfaces.
In the third invention, in addition to the effect of the first invention, the thickness of the plate material to which the receiving member for transporting containers manufactured from the preform according to the first invention can be attached is the contact in the third invention. It has the effect of being determined by the distance between the contact surface of the portion and the first surface of the receiving member for transporting containers.
Incidentally, it is also possible to form a part corresponding to the abutting part in the part to be molded of the first invention by vacuum forming and use it instead of the third invention, but even in this case the above-mentioned action is the same. demonstrated.

According to a fourth invention, in the first invention, a wide portion extending from the flat portion and a narrow portion continuing from the wide portion are formed by partially notching the tip of the engaging portion. A part of the inner wall surface of the opening corresponding to the long side of the rectangle when viewed from above is notched, so that when the engaging claw is arranged in the opening, it can be locked to the end face of the wide part. The locking part is provided on the far side from the part to be molded.
In the fourth aspect of the invention, "when the engaging claw is arranged within the opening" means that the "engaging claw" provided on the same preform is arranged within the "opening". Instead, in the same manner as described above regarding the first invention, the transporting container receiving member manufactured using the preform according to the fourth invention is combined with another preform according to the fourth invention. In practice, it is meant that one "engaging pawl" can be placed in the other "opening". That is, in these descriptions, the transport container receiving member manufactured using the preform according to the fourth invention and another preform according to the fourth invention are arranged so that the first surfaces face each other. In the arranged state, when one "engaging claw" is arranged in the other "opening", the locking part provided in the opening is locked to the end face of the wide part. ing. The end face of the wide portion in the fourth invention corresponds to the broader concept of the locking end face 14c of the wide portion 14a described in the embodiment.

In a state in which a transporting container receiving member manufactured using the preform according to the fourth invention and another preform according to the fourth invention are arranged so that the first surfaces face each other, one is elastically deformed to be placed in the other opening, and when the wide portion of the engaging claw passes through the locking portion of the opening, the elastic deformation of the engaging claw is restored. The end face of the portion is locked to the locking portion of the other opening. Therefore, in the fourth invention, in addition to the effects of the first invention, when the above-described carrier container receiving member and preform are attached to the plate material, the action of engaging the engaging claws with the openings is more reliable. is demonstrated in

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a boundary portion is provided so as to surround the molding target portion and protrude from the second surface, and the first coupling portion and the second 2 is provided outside the boundary.
In the fifth invention, in addition to the effect of any one of the first invention to the fourth invention, the influence of deformation caused in the molding target part by vacuum forming affects the first joint part and the second joint part. The boundary has the effect of preventing propagation.

A sixth invention is a method of manufacturing a receiving member for a transport container using the preforms according to any one of the first to fourth inventions, comprising the steps of forming the preform by injection molding, and forming the preform by vacuum forming. and a step of forming an article receiving portion in the molding target portion of the remodeling.
In the sixth aspect of the invention, since the first connecting portion and the second connecting portion are formed by injection molding, they are used when attaching the receiving member for the transporting container to the plate material that constitutes the transporting container, and are formed by vacuum forming. It has the effect of facilitating the formation of complex shaped protruding portions and engaging claws that are difficult to form. Further, in the sixth invention, since the storage item receiving portion is formed in the molding target portion by vacuum forming, the container having the storage item receiving portion having a different shape for each part or product to be stored in the transport container. This has the effect that the receiving member can be realized at a lower cost than when injection molding is used.

According to the first invention, it is possible to easily manufacture a receiving member for a transporting container that is attachable to and detachable from a plate member that constitutes the transporting container and that can be attached to either side of the plate member.

According to the second invention, in addition to the effects of the first invention, it is possible to manufacture a receiving member for a transporting container without reducing the strength of the article receiving portion formed in the molding target portion by vacuum forming. It has the effect of

According to the third invention, in addition to the effects of the first invention, by changing the height at which the abutting portion protrudes from the first surface of the molding target portion, it can be attached to plate materials having different thicknesses. There is an effect that it is possible to manufacture a receiving member for a conveying container that is more flexible.
Incidentally, it is also possible to form a part corresponding to the contact part of the third invention on the part to be molded of the first invention by vacuum forming and use this instead of the third invention. The effect is exhibited in the same way.

When the transport container receiving member manufactured from the preform according to the fourth invention and another preform according to the fourth invention are attached to the plate material, the end surface of the wide portion is locked to the locking portion of the opening. Thus, the engaging claw is reliably engaged with the opening. As a result, there is no possibility that the receiving member for the transporting container will come off from the plate material of the transporting container, so safety during use is enhanced. That is, according to the fourth invention, in addition to the effect of the first invention, it is possible to manufacture a receiving member for a transporting container that is highly safe when installed on the plate material of the transporting container.

According to the fifth invention, in addition to the effect of any one of the first to fourth inventions, the first joint and the second joint are deformed under the influence of vacuum forming on the part to be molded. Since there is no fear that the container will become loose, there is an effect that it is possible to manufacture a receiving member for a transporting container that can be easily attached to the plate material of the transporting container.

According to the sixth aspect of the present invention, a conveying container provided with projections and engaging claws having complicated shapes that are difficult to form by vacuum forming, and containing parts receiving parts having different shapes for each part or product to be contained in the conveying container. It is possible to manufacture the receiving member easily and inexpensively.

1(a) and 1(b) are external perspective views respectively showing the state of the preform according to the first embodiment of the present invention as seen from above and the state as seen from below; FIG. (a) is an enlarged perspective view showing a first coupling portion and a second coupling portion in FIGS. 1(a) and 1(b), and (b) is an enlarged view of an engaging claw; FIG. 10C is a perspective view showing a state in which the engaging claw is engaged with the opening of the projecting portion; (a) to (c) are cross-sectional views showing how the engaging claw is engaged with the opening of the projecting portion. (a) is an external perspective view showing an example of a receiving member manufactured using the preform shown in FIGS. 1 (a) and 1 (b), and (b) is B in FIG. It is a direction arrow view. 1 is an external perspective view showing an example of a transport container; FIG. (a) is a plan view showing a state in which the receiving member shown in FIGS. 4(a) and 4(b) is installed on the bottom plate shown in FIG. 5; It is a direction arrow view. (a) is an external perspective view of a preform according to a second embodiment of the present invention, and (b) is a cross-sectional view taken along the line DD in (a). (a) is an external perspective view of a preform according to a third embodiment of the present invention, and (b) is a cross-sectional view taken along line EE in FIG. (a) is an external perspective view of a preform according to a fourth embodiment of the present invention, and (b) is a cross-sectional view taken along the line FF in (a). 6(a) is a cross-sectional view taken along line GG in FIG. 6(a), and FIG. 6(b) is a diagram showing a modification of FIG. 6(a).

1 to 10, the method of manufacturing a receiving member for a transporting container of the present invention, the structure of the preform used therein, and the actions and effects of these inventions will be described in detail.
In the following description, a case where the receiving member for the transporting container (hereinafter simply referred to as the receiving member) is installed on the bottom plate constituting the transporting container is taken as an example. In addition to the case of having a shape, it may be a member having at least a plate-like portion in which an opening can be provided, or it may be installed on a plate-like member other than the bottom plate. can be Even when the receiving member is installed on such a member, the method of manufacturing the receiving member for transporting containers of the present invention and the preform used therefor, which will be described below, exhibit the same effects.
Further, regarding the method of manufacturing the receiving member for a transporting container according to the present invention, the case of manufacturing the receiving member 15 from the preform 1 is taken as an example in the first embodiment. When manufacturing another receiving member having a different storage item receiving portion, or using any one of the preforms 20 to 22 described as Examples 2 to 4, the receiving member 15 and other receiving members Also in the case of manufacturing the member, the operation and effect of the invention relating to the manufacturing method of the receiving member for a transporting container described below are exhibited in the same manner.
Further, in the specification of the present application, the surface of the conveying container facing the plate member and the opposite surface are referred to as "first surface" and "second surface", respectively. Further, the preform of the present invention is used not only when manufacturing a receiving member to be installed in a transport container, but also when attaching a receiving member to a plate member of the transport container.

1(a) and 1(b) are external perspective views showing the state of a preform 1 according to a first embodiment of the present invention as viewed from above and from below, respectively. 2(a) is an enlarged perspective view showing the first coupling portion 4 and the second coupling portion 10 in FIGS. 1(a) and 1(b), and FIG. 2(b) is a 2C is a perspective view showing an enlarged engagement claw 12, and FIG. 2C is a perspective view showing a state in which the engagement claw 12 is engaged with the opening 9 of the projecting portion 5. FIG.
As shown in FIGS. 1(a), 1(b) and 2(a), the preform 1 according to the first embodiment of the present invention is made of a thermoplastic resin such as polyester, polyolefin, polyamide, polycarbonate, or the like. A molding object part 2 made of a plate material that is formed by injection molding and has a substantially rectangular shape in plan view, and in which a stored article receiving part 15a (see FIGS. 4A and 4B) is formed by vacuum molding , a boundary portion 3 provided so as to surround the molding target portion 2 and protrude from the second surface 1b, and two parallel sides provided outside the boundary portion 3 and forming the above-mentioned rectangle. It comprises a first connecting portion 4 and a second connecting portion 10 having side surfaces 1c, 1d, respectively. In addition, on the first surface 1a of the preform 1, thickness reduction 3a having a rectangular shape in a plan view is provided at a portion corresponding to a portion that becomes thick due to the provision of the boundary portion 3 on the second surface 1b, 3a are provided symmetrically with the part to be molded 2 interposed therebetween.
Since the thickness reduction 3a is provided for the purpose of reducing deformation due to shrinkage during injection molding, it may be omitted depending on the thickness of the portion concerned and conditions for injection molding.

The first coupling portion 4 includes a seat plate 4a having a rectangular shape in a plan view, a projecting portion 5 and protrusions 6 and 7 provided on the first surface 1a with respect to the seat plate 4a. 4a is provided with circular through holes 8a near side surfaces 1e and 1f perpendicular to the side surfaces 1c and 1d, respectively. The projecting portion 5 connects a pair of side plates 5a, 5a that are perpendicular to the seat plate 4a and parallel to the side surface 1c, and the upper end sides of the pair of side plates 5a, 5a, and is flat. A top plate 5c parallel to the first surface 1a, a pair of side plates 5b, 5b perpendicular to the seat plate 4a and connecting the top plate 5c and the pair of side plates 5a, 5a, and a side plate A pair of side plates 5a, 5a are installed parallel to 5b and configured by four reinforcing plates 5d connecting the pair of side plates 5a, 5a. 9, 9 are provided. In the opening 9, a part of the inner wall surface corresponding to one of the long sides of the rectangle when viewed from above is cut away, so that the pair of locking portions 9a and 9a are positioned farther from the molding target portion 2. formed. Moreover, the upper surface plate 5c of the projecting portion 5 is provided with projecting portions 6 at both ends in the longitudinal direction, respectively, and a projecting portion 7 is provided substantially in the center. Further, the seat plate 4a of the first coupling portion 4 is provided with circular through holes 8a near the side surfaces 1e and 1f, respectively.

The seat plate 10a of the second coupling portion 10 is provided with circular through holes 8b near the side surfaces 1e and 1f, respectively. A pair of locking pieces 11b, 11b protruding in a direction perpendicular to the side surface 1d and having a rectangular shape in plan view and divided into two by a slit 11a is formed in the width direction of the seat plate 10a (side surface 1e). , 1f). A pair of slits 10b, 10b having a predetermined length in a direction perpendicular to the side surface 1d are formed in the seat plate 10a of the second coupling portion 10 with a pair of engaging claws 12, 12 interposed therebetween. It is provided between the pair of through holes 8b, 8b so as to fit together.
As will be described later, when the receiving member 15 (see FIG. 4(a)) and the preform 1 are connected, the protrusion 6 of the preform 1 abuts against the side surface 1d of the receiving member 15, The projecting portion 6 of the receiving member 15 abuts against 1d. That is, the projections 6 of the receiving member 15 and the preform 1 are in contact with the side surface 1d, so that their movements in the direction perpendicular to the side surface 1d are restricted.

As shown in FIG. 2(a), the projection 7 has a linear portion 7a parallel to the longitudinal direction of the top plate 5c of the projecting portion 5 and a linear portion 7a perpendicular to the longitudinal direction of the top plate 5c. It consists of a pair of protruding portions 7b, 7b and a protruding portion 7c which are respectively provided at both ends and substantially in the center. As described above, when connecting the receiving member 15 and the preform 1, the projecting portion 7c is arranged inside the slit 11a, and the locking piece 11b is connected to the projecting portion 7b. 7c, respectively. That is, the receiving member 15 and the preform 1 are arranged in a direction parallel to and perpendicular to the side surface 1d by arranging the locking piece 11b on one side between the projecting portions 7b and 7c of the protrusion 7 on the other side. It has a structure in which movement in each direction is mutually regulated.

The engaging claw 12 includes a seat plate 10a provided with slits 10b on both sides as shown in FIG. (See FIG. 1(b)) and a flat portion 13 bent substantially at a right angle to the side, and a flat portion 13 extending from the flat portion 13 so as to protrude in a direction away from the molding target portion 2 when the seat plate 10a is viewed in plan. , and an engaging portion 14 bent at an acute angle toward the second surface 1b. A part of the tip of the engaging portion 14 is cut out in a substantially rectangular shape in a plan view to form a wide portion 14a extending from the flat portion 13 and a narrow portion 14b continuing from the wide portion 14a. ing. A pair of locking end faces 14c, 14c are formed on both sides of the narrow portion 14b. Further, on the second surface 1b (see FIG. 1(a)) of the seat plate 10a on which the flat portion 13 of the engaging claw 12 extends, on both sides in the width direction (direction parallel to the side surface 1d) A thick portion 12a is provided, respectively.
The receiving member 15 and the preform 1 cannot be separated from each other by engaging the engaging claws 12 on one side with the openings 9 of the projections 5 on the other side. The narrow portion 14b is placed between the pair of locking portions 9a, 9a as shown in FIG. 2(c).

Here, a procedure for joining the receiving member 15 and the preform 1 will be described with reference to FIG. 3(a) to 3(c) are cross-sectional views showing how the engaging claw 12 is engaged with the opening 9 of the projecting portion 5, and FIG. ) corresponds to a cross-sectional view taken along the line AA.
When connecting the receiving member 15 and the preform 1, for example, if the receiving member 15 is arranged above the preform 1, the first surfaces 1a (see FIG. 1(b)) of each other are In the facing state, the engaging claw 12 of the receiving member 15 is arranged above the opening 9 of the projecting portion 5 of the preform 1 as shown in FIG. 3(a). From this state, when the preform 1 is brought closer to the receiving member 15, the engaging claw 12 is elastically deformed so that the angle formed by the flat portion 13 and the engaging portion 14 becomes smaller, as shown in FIG. 3(b). Thus, the planar portion 13 and the wide portion 14a of the engaging portion 14 can pass between the inner wall surface 9b farther from the side surface 1c of the opening 9 and the engaging portion 9a. Then, when the wide portion 14a of the engaging portion 14 passes between the inner wall surface 9b of the opening portion 9 and the locking portion 9a, the elastic deformation of the engaging claw 12 is restored, so that the narrow portion of the engaging portion 14 is opened. A pair of locking end surfaces 14c, 14c formed on both sides of the narrow portion 14b are arranged between the pair of locking portions 9a, 9a as shown in FIG. 3(c). , 9a respectively. As a result, the preform 1 cannot be separated from the receiving member 15 . That is, the receiving member 15 and the preform 1 cannot be separated from each other when the engaging claw 12 on one side engages with the opening 9 of the projecting portion 5 on the other side.
In FIG. 3(c), the planar portion 13 and the wide portion 14a of the engaging portion 14 are engaged with the inner wall surface 9b of the opening 9 by holding the tip of the narrow portion 14b of the engaging portion 14 with a finger. When the engaging claw 12 is elastically deformed in the direction in which the angle formed by the flat portion 13 and the engaging portion 14 becomes smaller until it becomes able to pass through the portion 9a, the engaging claw 12 becomes as shown in FIG. 3(b). 3(a), the engaging claw 12 is pulled out from the opening 9 of the projecting portion 5, so that the engaging claw 12 is removed from the receiving member 15. The preform 1 can now be pulled apart.

4(a) is an external perspective view of a receiving member 15 manufactured using the preform 1, and FIG. 4(b) is a view taken in the direction of arrow B in FIG. 4(a). It should be noted that the stored article receiving portion 15a formed in the molding target portion 2 of the receiving member 15 is not limited to the shape shown in FIGS.
The receiving member 15 is formed by vacuum forming a part of the part to be molded 2 of the preform 1 shown in FIGS. As shown in (a) and FIG. 4(b), the structure is formed so as to protrude from the second surface 1b. The boundary portion 3 has the effect of preventing the deformation of the molding target portion 2 from propagating to the first joint portion 4 and the second joint portion 10 in the vacuum forming process described above. In this case, there is no possibility that the first joint portion 4 or the second joint portion 10 will be deformed due to the influence of vacuum forming on the molding target portion 2 . Therefore, the use of the preform 1 makes it possible, for example, to manufacture a receiving member 15 that can be easily attached to the bottom plate 19 of a transport container 16 as shown in FIG.

FIG. 5 is an external perspective view of the transport container 16. As shown in FIG. 6(a) is a plan view showing a state in which the receiving member 15 shown in FIGS. 4(a) and 4(b) is installed on the bottom plate 19 shown in FIG. 5, and FIG. 6(b) is a view in the direction of arrow C in FIG. 6(a). In addition, illustration of the base plate 19 is abbreviate|omitted in FIG.6(b).
As shown in FIG. 5, the transport container 16 is installed in a frame 18 composed of, for example, a plurality of square pipes 17 combined to form each side of a rectangular parallelepiped, and a bottom opening 18a of the frame 18. The bottom plate 19 is rectangular in plan view and has four through-holes 19a which are rectangular in plan view and are formed in pairs. Note that the transport container 16 is not limited to being made of metal, and may be made of plastic, or may be made of cardboard made of paper or plastic.

As shown in FIGS. 6A and 6B, the receiving member 15 and the preform 1 are passed through the through holes 19a in a state in which the first surface 1a faces the bottom plate 19 of the transport container 16. By engaging the other engaging claw 12 with the opening 9 of the projecting portion 5 , it is fixed to both surfaces of the bottom plate 19 .
However, in the preform 1 and the receiving member 15, the opening 9 of the projecting portion 5 and the engaging claw 12 are provided symmetrically with the molding target portion 2 interposed therebetween. When engaging with the opening 9 of the projecting portion 5, the other engaging claw 12 is also engaged with the opening 9 of the projecting portion 5 at the same time. That is, the preform 1 is combined with a receiving member 15 manufactured from another preform 1 having the same structure so as to be easily attached to the bottom plate 19 used in the transport container 16. there is
3(b) and 3(c), the front end of the narrow portion 14b of the engaging portion 14 is held with a finger or the like, so that the flat portion 13 and the engaging portion 14 are separated from each other. When the engaging claw 12 is elastically deformed in the direction of decreasing the angle, the engaging state between the engaging claw 12 and the opening 9 of the projecting portion 5 is released, and the receiving member 15 and the preform 1 are separated from each other. It becomes possible. That is, preform 1 and receiving member 15 can be easily removed from bottom plate 19 .
The receiving member 15 and the preform 1 can also be fixed to the bottom plate 19 using screws inserted through the through holes 8a and 8b. However, if there is no such need, the through holes 8a and 8b may not be provided.

That is, by combining the preform 1 with a receiving member 15 manufactured from another preform 1 having the same structure, it becomes possible to attach the preform 1 to the bottom plate 19 of the transport container 16, and the attachment and detachment thereof are extremely easy. be.
Thus, according to the preform 1, the receiving member 15 that can be attached to and detached from the bottom plate 19 of the transport container 16 and that can be attached to either side of the bottom plate 19 can be easily manufactured.
When the receiving member 15 and the preform 1 are attached to the plate material, the pair of locking end faces 14c, 14c are locked to the pair of locking portions 9a, 9a, respectively, as already described with reference to FIG. 3(c). Therefore, the engaging claw 12 is reliably engaged with the opening 9 of the projecting portion 5 . In this case, there is no fear that the receiving member 15 will come off from the bottom plate 19 of the transport container 16, so that it can be used safely. Therefore, according to the preform 1, it is possible to manufacture a receiving member 15 that can be installed on the bottom plate 19 of the transport container 16 and used safely.

The method of manufacturing the receiving member for a transporting container of the present invention includes, for example, a step of forming the preform 1 by injection molding and a step of forming the preform 1 by vacuum forming, as in the case of manufacturing the receiving member 15 using the preform 1. and a step of forming an article receiving portion 15a in the molding target portion 2 of the remodeling 1.
According to such a manufacturing method, since the first connecting portion 4 and the second connecting portion 10 are formed by injection molding, the protrusions 5 and engaging claws having complicated shapes which are difficult to form by vacuum forming can be formed. 12 are readily formed. In addition, since the mold used for vacuum molding is cheaper to manufacture than the mold used for injection molding, according to the above-described manufacturing method in which the stored article receiving portion 15a is formed in the molding target portion 2 by vacuum molding, The receiving member 15 having the stored item receiving portion 15a having a different shape for each part or product stored in the transport container 16 can be realized at a lower cost than when injection molding is used.
That is, according to the manufacturing method of the receiving member for a transporting container of the present invention, the projecting portion 5 and the engaging claw 12 having a complicated shape that is difficult to form by vacuum forming, and the parts and products to be stored in the transporting container 16 are formed. It is possible to easily and inexpensively manufacture the receiving member 15 having the storage article receiving portions 15a with different shapes.

FIG. 7(a) is an external perspective view of a preform 20 according to a second embodiment of the present invention, and FIG. 7(b) is a cross-sectional view taken along line DD in FIG. 7(a). In addition, in FIGS. 7A and 7B, in order to avoid complication of the drawings, only a part of the projections are denoted by reference numerals. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.
As shown in FIGS. 7(a) and 7(b), the preform 20 according to the second embodiment of the present invention has a constant thickness in the preform 1, and has a ripple shape in plan view. A plurality of protrusions 20a are formed on the molding target portion 2 so as to protrude toward the second surface 1b.
When the receiving member 15 is manufactured using the preform 20 having such a structure, the article receiving portion 15a is formed in the molding target portion 2 by stretching the molding target portion 2 using a vacuum forming mold. At this time, the projecting portion 20a is crushed by the mold and the resin material of that portion is supplied to the surroundings, thereby preventing thinning of the stored article receiving portion 15a. Therefore, according to the preform 20, the receiving member 15 can be manufactured without reducing the strength of the article receiving portion 15a.

FIG. 8(a) is an external perspective view of a preform 21 according to a third embodiment of the present invention, and FIG. 8(b) is a cross-sectional view taken along line EE in FIG. 8(a). In addition, in FIGS. 8(a) and 8(b), in order to avoid complication of the drawing, only a part of the protrusions are denoted by reference numerals. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.
As shown in FIGS. 8(a) and 8(b), the preform 21 according to the third embodiment of the present invention has a constant thickness in the preform 1 and has a hemispherical shell shape. A plurality of protrusions 21a are provided on the molding target portion 2 so as to protrude toward the second surface 1b.
When the receiving member 15 is manufactured using the preform 21 having such a structure, the article receiving portion 15a is formed in the molding target portion 2 by stretching the molding target portion 2 using a vacuum forming mold. At this time, the projecting portion 21a is crushed by the mold and the resin material of that portion is supplied to the surroundings, thereby preventing thinning of the stored article receiving portion 15a. Therefore, according to the preform 21, the receiving member 15 can be manufactured without lowering the strength of the article receiving portion 15a.
Although the preform 21 has the same functions and effects as the preform 20, the projections 20a and the projections 21a are different in shape and number. have different manufacturing costs. Therefore, it is desirable to determine which one of the preform 21 and the preform 20 should be selected according to the size of the part to be molded 2 and the storage article receiving part 15a.

FIG. 9(a) is an external perspective view of a preform 22 according to a fourth embodiment of the present invention, and FIG. 9(b) is a cross-sectional view taken along line FF in FIG. 9(a). 10(a) is a cross-sectional view taken along line GG in FIG. 6(a), and FIG. 10(b) is a diagram showing a modification of FIG. 10(a). FIG. 10(b) corresponds to FIG. 10(a) in which preform 22 is used instead of preform 1. FIG. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.
As shown in FIGS. 9(a) and 9(b), the preform 22 has a constant thickness in the preform 1 and has a contact surface 23a parallel to the first surface 1a. A contact portion 23 is provided on the molding target portion 2 so as to protrude toward the first surface 1a.

6(a) and 6(b), the bottom plate 19 of the transport container 16 is sandwiched between the receiving member 15 and the preform 1, and the opening 9 of the projecting portion 5 on one side 10(a), the receiving member 15 and the preform 1 are connected to the bottom plate 19 while the first surfaces 1a are in contact with both sides of the bottom plate 19, respectively, as shown in FIG. 10(a). can be attached to
On the other hand, when the receiving member 15 and the preform 22 are attached to a plate member 24 which is thinner than the bottom plate 19 and has a through hole 19a provided at the same location as the bottom plate 19, the receiving member 15 and the preform 22 are mounted as shown in FIG. 10(b). and the contact surface 23a of the contact portion 23 of the preform 22 are in contact with both surfaces of the plate member 24, respectively. Thus, when the preform 22 is used instead of the preform 1 , the receiving member 15 can be attached to the plate member 24 thinner than the bottom plate 19 .
That is, when the preform 22 is used instead of the preform 1, the thickness of the plate material to which the receiving member 15 manufactured from the preform 1 can be attached is the same as the contact surface 23a of the contact portion 23 of the preform 22 and the receiving member. It is determined by the spacing of the first surface 1a of the member 15. FIG. Therefore, by using the preform 22 , the receiving member 15 can be attached to a plate material thinner than the bottom plate 19 . Further, by changing the height at which the contact portion 23 protrudes from the first surface 1a of the molding target portion 2, it is possible to attach the receiving member 15 to plate materials having different thicknesses.

It should be noted that it is also possible to form a portion corresponding to the contact portion 23 of the preform 22 in the molding target portion 2 of the preform 1 by vacuum forming and use this instead of the preform 22. and the effect is exhibited in the same way.
Further, when attaching the receiving member 15 to the bottom plate 19 of the transport container 16 , another receiving member 15 may be used instead of the preform 1 and the preform 22 . That is, in a state in which the bottom plate 19 is arranged between the pair of receiving members 15, 15, the other engaging claw 12 is engaged with the opening 9 of the projecting portion 5 through the through hole 19a. The receiving members 15 , 15 may be fixed to the bottom plate 19 .

INDUSTRIAL APPLICABILITY The present invention can be used when manufacturing a receiving member that is installed to support a part or a product on a plate material that constitutes a transport container.

DESCRIPTION OF SYMBOLS 1... Preform 1a... 1st surface 1b... 2nd surface 1c-1f... Side surface 2... Molding part 3... Boundary part 3a... Meat stealing 4... First joint part 4a... Seat plate 5... Protruding part 5a, 5b... Side plate 5c... Top plate 5d... Reinforcing plate 6, 7... Protruding part 7a... Straight part 7b, 7c... Protruding part 8a, 8b... Through hole 9... Opening part 9a... Locking part 9b... Inner wall surface DESCRIPTION OF SYMBOLS 10... 2nd coupling|bond part 10a... Seat plate 10b... Slit 11a... Slit 11b... Locking piece 12... Engaging claw 12a... Thick part 13... Plane part 14... Engagement part 14a... Wide part 14b... Narrow part DESCRIPTION OF SYMBOLS 14c... Locking end surface 15... Receiving member 15a... Stored article receiving part 16... Transport container 17... Square pipe 18... Frame 18a... Bottom opening 19... Bottom plate 19a... Through hole 20 to 22... Preform 20a, 21a... Projection 23... Contact portion 23a... Contact surface 24... Plate material

Claims (6)

A rectangular flat plate member formed by injection molding of a thermoplastic resin and having a first surface and a second surface that are rectangular in plan view and are parallel to each other,
a part to be molded in which an article receiving part is formed by vacuum forming;
a first joint portion and a second joint portion provided on both sides of the part to be molded;
a projecting portion having a flat surface parallel to the first surface and provided on the first surface of the first coupling portion;
an engaging claw provided symmetrically with a rectangular opening provided on the flat surface with respect to the second coupling portion, sandwiching the molding target portion;
The engaging claw includes a planar portion extending from the seat plate of the second coupling portion and bent at right angles to the first surface side, and the molding target portion when the seat plate is viewed in plan. and an engaging portion extending from the flat portion so as to protrude in a direction away from the second surface and bent at an acute angle toward the second surface, the flat portion and the engaging portion By elastically deforming so as to reduce the angle formed, it becomes a size that can be placed in the opening. A preform characterized by having a size that can fit. 2. The preform according to claim 1, wherein a plurality of protrusions having a constant thickness are provided on said forming target portion so as to protrude toward said second surface. A contact portion having a constant thickness is provided in the molding target portion so as to protrude toward the first surface, and the contact portion includes a contact surface parallel to the first surface. A preform according to claim 1, characterized in that it has a A portion of the tip of the engaging portion is cut away to form a wide portion extending from the flat portion and a narrow portion continuing from the wide portion,
A part of the inner wall surface of the opening corresponding to the long side of the rectangle when viewed from above is cut away, so that when the engaging claw is arranged in the opening, it engages with the end surface of the wide portion. 2. The preform according to claim 1, wherein a lockable locking portion is provided on a side far from the molding target portion. A boundary portion provided so as to surround the molding target portion and protrude from the second surface,
5. The preform according to any one of claims 1 to 4, wherein the first joint portion and the second joint portion are provided outside the boundary portion. A method of manufacturing a carrier container receiving member using the preform according to any one of claims 1 to 4, comprising:
forming the preform by the injection molding;
A method of manufacturing a receiving member for a transporting container, comprising: forming the article receiving portion in the molding target portion of the preform by the vacuum forming.

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