JPH0740579U - Assembly parts packing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] As a packing device for stacking and using at least two container bodies, it is possible to efficiently accommodate large and small parts by utilizing the thickness of the container bodies without waste, and the tooth surface is foamed. The gears can be accommodated and held without abutting against, and the parts to which a relatively large amount of oil adheres can be used repeatedly without the risk of oil adhering to the bottom surface of the recess. A storage portion 11b is provided below or in the vicinity of a recess 11a for storing a large component such as a differential gear G, and below the large component stored in the recess 11 for storing a small component. Further, a supporting portion 25 is provided for supporting the gears on the side surface except for the outer peripheral tooth portion, the boss portion and the inner hole portion. In addition, a molding tray made of non-foamed synthetic resin molding is fitted and arranged at the bottom of the recess that accommodates parts such as the main valve of the transmission that has a relatively large amount of oil attached,
The dripping oil is received by the molding tray.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a packing device mainly used for transporting components of an automobile transmission (transmission), components of a differential (differential device) and other assembly parts.

[0002]

[Prior art]

 Conventionally, as a packing device of this type, at least two trays made of styrofoam (corresponding to the container body in the present invention) having recesses for accommodating large and small assembled parts on the upper surface have been used, and the trays are vertically moved with the parts accommodated. There is a method of stacking and packing.

[0003] Assembled parts for automobiles include, for example, large parts having a relatively large diameter and width and comparatively small parts, such as a differential gear and a control main valve (hereinafter referred to as a main valve) of an automatic transmission. However, these large parts and small parts are fitted into the respective recesses of each tray to be accommodated. At this time, if the recesses for accommodating the large parts have a large diameter and a deep bottom, the small parts are accommodated. There is a problem in that the bottom of the accommodating recess becomes thick and the tray thickness is wasted, and the stacking apparatus as a whole becomes taller, which causes inconvenience in handling.

Therefore, in order to solve the above-mentioned problems, the tray is composed of a thick-walled portion that fits into the recess for accommodating large parts and a thin-walled portion that fits into the recess for accommodating thin small parts. A step is provided on the upper surface of the tray of the above, and a step corresponding to the step is provided on the bottom surface of the upper tray opposite to this so as to eliminate waste of the thickness of the tray and prevent it from becoming tall. A packing device has been proposed (Japanese Utility Model Publication No. 3-26147).

[0005]

[Problems to be solved by the device]

 At the assembly factory of the destination of this type of packing device, each tray is separated and placed on the conveyor of the assembly line, and the parts accommodated in each tray are sequentially taken out to assemble the automobile.

At this time, in the tray having the stepped bottom surface as described above, the tray is tilted when it is placed on the conveyer of the assembly line, which is unstable, and the work of taking out the parts is not performed. It is also difficult to carry out the work of transferring each tray by hand lift.

Therefore, in this type of packing device, it is desired that each tray can be efficiently accommodated without waste of the tray thickness without forming a step on each tray.

Recently, in addition to using the packing device as a one-way, it has been considered that the packing device is repeatedly used several times (about eight times) as a two-way type. It is desirable that such a packaging device that is used repeatedly should not be easily damaged and should not be contaminated.

However, if the corners of the components to be housed contact the surface of the tray, the surface of the foam forming the tray may be damaged, and if a large amount of rust-preventive oil or the like adheres to the components, the tray may be damaged. The surface may become dirty with oil.

In particular, in the case of the Styrofoam, which is commonly used, such as the above-mentioned packing device, the material is slightly brittle and may be cracked, and the surface is scraped by the contact of the accommodated parts. As a result, dust may easily be generated, and this dust may adhere to, for example, transmission-related parts, which may affect the accuracy of the assembled state, making it impossible to switch gears. Further, the Styrofoam products have poor oil resistance, and may be dented or deformed by the rust preventive oil adhering to the parts.

Therefore, normally, the tray is washed before the parts are housed, and a protective film such as an oil-resistant polyethylene film is used to prevent the parts from coming into direct contact with the foam. The effect of preventing adhesion of dust and the generation of dust is not perfect, and further improvement is required.

The present invention has been made in view of the above points, and one of the objects thereof is a packing device for stacking and using at least two container bodies having recesses for accommodating large and small assembled parts. It is an object of the present invention to provide a packaging device capable of efficiently storing large and small parts without making a difference in thickness of the container body and making use of the thickness of the container body without waste.

Another object of the present invention is to provide a packing device in which the gears can be accommodated and held in the same packing device as above without the tooth surfaces of the gears contacting the foaming body. Still another object of the present invention is to provide a packing device which can be repeatedly used in the same packing device as described above, and particularly in parts to which a relatively large amount of oil adheres, such as a main valve of a transmission. It is an object of the present invention to provide a packing device capable of reliably preventing oil from adhering to the bottom surface of a recess.

[0014]

[Means for Solving the Problems]

 The first aspect of the present invention that solves the above-mentioned problems is to have at least two container bodies made of synthetic resin foam having a recess for accommodating large and small assembled parts on the upper surface. In a packing device of a method of stacking and stacking the parts on a lower side of a concave part for accommodating large parts having a relatively large diameter or width, a small part is accommodated in a lower part of the large parts accommodated in the concave part. The feature is that the accommodation section is provided.

In the above packing apparatus, when the large component is a differential gear having a large diameter gear portion and a small diameter gear portion, a concave portion for accommodating the large gear portion is provided vertically with the small diameter gear portion facing downward. The mold may be formed so as to be able to be accommodated and held, and an accommodating portion for accommodating small parts may be provided below the large diameter gear portion of the differential gear accommodated in the recess.

A second aspect of the present invention is, in a packing apparatus for stacking and using at least two container bodies similar to the above, in a concave portion for accommodating gears or in the vicinity thereof, gears to be accommodated are provided on outer peripheral tooth portions. It is characterized in that a supporting means for supporting the side surface other than the above, the boss portion, or the inner diameter portion is provided so that a clearance is held between the tooth surface and the foam surface.

A third aspect of the present invention is a packaging device for stacking and using at least two container bodies similar to the above, which has a recess for accommodating a relatively oily component such as a main valve of a transmission. It is characterized in that a molding tray made of a non-foamed synthetic resin molding is fitted and arranged on the bottom.

In this case, the above-mentioned molding tray can be integrally provided with an accommodating / holding portion for holding a small-sized component below the large-sized component.

Further, in the above-mentioned packing device, as the synthetic resin foam constituting the container body, there is used a polyolefin resin such as a copolymer mainly composed of olefin such as polyethylene or polypropylene, and polyethylene modified with styrene. A foam produced by in-mold bead foam molding is particularly preferably used.

[0020]

[Action]

 In the first packing device of the present invention described above, a housing portion for housing small parts is provided below or in the vicinity of the recess for housing large parts having a relatively large diameter and width. Therefore, the small parts are stored in this storage part first, and then the large parts are stored.

For example, a small-diameter gear or another small-sized component is accommodated in a storage part for a small-sized component provided in a lower portion of a recess for accommodating the differential gear, and then the differential gear is accommodated.

With this configuration, the large-sized component and the small-sized component can be housed three-dimensionally without waste by utilizing the thickness of the container body.

Further, in the case of the above-mentioned second packing device, the gears housed in the recess are supported by the side surface other than the outer peripheral tooth portion, the boss portion or the inner diameter portion by the supporting means provided in this portion, Since a clearance is retained between the tooth surface and the foam surface, it is possible to prevent damage to the foam surface due to the gear teeth coming into contact with the container and generation of dust due to rubbing.

Further, like the third packing device, a molding tray made of a non-foamed synthetic resin molded product is fitted and arranged at the bottom of a recess for accommodating a component to which a relatively large amount of oil adheres. In that case, the parts would be housed on the forming tray. Therefore, even if rust-preventive oil or the like is dropped from the accommodated parts, the oil will be received by the molding tray, and the foam will not be soiled or deformed by the oil. The molding tray can also prevent damage to the foam surface.

Further, when the above-mentioned forming tray is integrally provided with an accommodating / holding portion for holding a small-sized component in the lower portion of the large-sized component, the small-sized component can be accommodated in the space below the large-sized component, and the small-sized component is further Can be stored efficiently.

Further, when the material forming the container is a foam of polyolefin resin, dust is less likely to be generated, and pressure resistance and toughness are appropriate, and breakage or cracking is less likely to occur, and oil resistance and Has excellent chemical resistance and does not deform even if oil is attached.

[0027]

【Example】

 Next, one embodiment of the present invention will be described with reference to the drawings.

The illustrated embodiment shows a case where four container bodies (1), (2), (3) and (4) are vertically stacked and used to configure a set of packaging devices (A).

Each of the container bodies (1), (2), (3) and (4) is made of a bead foam-molded synthetic resin foam, and each of the container bodies (1), (2), (3) and (4). Recesses (11) (21) (31) (41) for accommodating large and small assembling parts such as automobile automatic transmission components and differential components are formed on the upper surface as described later. It is formed so that the parts can be stacked while being housed (not shown in FIG. 1).

In the case of the figure, the container bodies (1), (2), (3) and (4) that are stacked one above the other have side wall upper edges (12) (22) (32) along the outer peripheral edge of the overlapping surface. ) (42) and notches (13), (23), (33) and (43) in the bottom peripheral edge so that they are stacked in order in a fitted state.

The lowermost container body (1) has two sets of large parts such as a differential gear and a main valve of a transmission and relatively small parts related thereto as recesses (11) for accommodating assembly parts. Corresponding recesses (11) are arranged and formed in a rotationally symmetrical manner so that they can be housed.

Of these, the concave portion (11a) for accommodating the differential gear substantially corresponds to the shape of the differential gear (G) coaxially having the large diameter gear portion (G1) and the small diameter gear portion (G2). The small diameter gear portion (G2) can be accommodated in the vertical direction with the small diameter gear portion (G2) facing downward, and the large diameter gear portion (G1) can be supported by the upper surface of the peripheral portion of the recess (11a).

Particularly, on the upper surface of the peripheral portion of the concave portion (11a), there is provided a convex portion (14) which is received by the side surface along the inner circumference of the rim of the large diameter gear portion (G1), and the small diameter portion is provided inside the concave portion (11a). A step portion (15) for supporting the side surface of the gear portion (G2) is provided, and a shaft portion protruding from the small diameter gear portion (G2) is formed so as to fit in the central recess. As a result, it is possible to support the differential gear (G) in a housed state with a clearance between the tooth surface of the differential gear (G) and the inner surface of the concave portion without displacement and with good stability.

Further, in the lower part of the recess (11a) or in the vicinity thereof, at the lower part of the differential gear (G) housed in the recess (11a), the thickness of the container body (1) is used to make an accessory. An accommodating portion (11b) for accommodating the component (c) is continuous with the concave portion (11a) as shown in FIG. 7 (a), or as a concave portion (11a) as shown in FIG. 7 (b). It is provided via a partition between them.

As a matter of course, the thickness of the container body may be provided below or near the concave portion (11) for accommodating another large component having a relatively large diameter or width and below the large component accommodated in the concave portion (11). It is possible to implement by providing an accommodating portion for accommodating a small-sized component.

As a result, large and small parts can be accommodated three-dimensionally and efficiently without forming a step on the container body.

In addition, a molding tray (16) made of a synthetic resin molded product as shown in FIG. 5 is fitted and arranged at the bottom of the recess (11c) for accommodating the main valve (V). That is, the main valve (V) has a relatively large amount of rust-preventive oil or the like attached, and this oil may drip during transportation. Therefore, the bottom of the recess (11c) may be a polyolefin such as polyethylene or polypropylene. By fitting and arranging the molding tray (16) made of non-foaming synthetic resin molded product having excellent oil resistance such as a system resin, oil or the like adhering to the main valve (V) drops and the recess ( The bottom of 11c) is prevented from being soiled or deformed by oil, and the foam is prevented from being dented or deformed. As a matter of course, the same molding tray as described above may be fitted and arranged as necessary for other parts to which a relatively large amount of oil adheres.

The molding tray (16) has a shape substantially corresponding to the lower shape of the main valve (V) to be housed and the bottom shape of the recess (11c), and particularly, the molding tray (16). ), An accommodating / holding portion (17) for small parts can be integrally provided so that small parts can be housed in the space below the main valve (V). The accommodating / holding portion (17) may have a shape capable of restricting the movement of small parts. When the small parts are gears (G3), for example, as shown in FIG. 5 and FIG. From the viewpoint of protecting the teeth, it is desirable to provide them so that they can be supported at a place other than the teeth, such as by forming a convex shape to fit the inner diameter of (G3).

Further, the container body (2) of the second layer, which is overlaid on the container body (1) of the lowermost layer, is accommodated in the accommodation recess (11) of the container body (1) on the lower surface thereof. The recess (24) for accommodating the parts protruding upward from the upper surface of the container body (1) such as the differential gear (G) and the main valve (V) has a sufficient clearance especially between the parts. It is provided in.

Further, on the upper surface of the container body (2), a recess (21) for accommodating gears of a transmission and other large and small assembled parts is formed in a shape substantially corresponding to each part. In particular, the respective recesses (21) are arranged and formed so that the parts can be accommodated within the remaining thickness range according to the recesses (24) on the lower surface.

Further, the upper two container bodies (3) and (4) can also accommodate the transmission gears, rings, shafts, differential gears and other large and small assembly parts on the upper surface thereof. Thus, the recesses (31) (41) substantially corresponding to the respective parts are provided.

Also in these container bodies (2), (3) and (4), when the upper part of the component housed in the recess is projected from the upper surface of the container body, it is projected to the lower surface of the container body to be stacked on the upper side. A recess that can accommodate the portion is formed. As for the containers (2), (3) and (4), the small parts can be accommodated in the lower part of the large parts as described above, and the molding tray is fitted to the bottom of the accommodation recess of the large parts. Can be carried out.

In any of the container bodies (1), (2), (3) and (4), the recess for accommodating the gears is the same as in the differential gear (G) described above. It is preferable that the side surface excluding the tooth portion, the boss portion, or the inner diameter portion be provided so as to be supported so that a clearance is retained between the tooth surface of the gear to be accommodated and the foam surface.

For example, as shown in an enlarged view in FIG. 8, protrusions (25) (35) (45) fitted to the inner diameter portion of the gear (G4) are provided in the central portions of the recesses (21) (31) (41). ) Is provided and the gear (G4) accommodated in the recess is fitted to support the outer peripheral tooth portion so as not to abut the foam surface in the same manner as above.

With this configuration, the tooth surface of the gear does not contact the foam surface, and the foam surface is not damaged or dust such as shavings is not generated.

Also, with respect to other parts such as a shaft with a gear, when the foam surface such as the gear part is brought into contact with the foam surface, the unsatisfactory portion may be separated from the foam material and contacted with the foam material such as both end portions of the shaft. It is better to support in the non-existing part.

The container bodies (1), (2), (3) and (4) described above have a weight of 30 to 40 kg when the parts are accommodated, so that they can be transported and transferred in a separated state. Is done using a hand lift. Therefore, recesses (18) (28) (38) that can hold the claws of the handlift at the opposite side edges on the long side of the lower surface of each container body (1) (2) (3) (4). It is preferable to provide (48). The recessed portions (18) (28) (38) (48) may be provided only on both side edges, but depending on work requirements, for example, in the case of the lowermost container body (1), As described above, the recessed portions (18) on both side edges may form a continuous recessed line. If the notches (28a) and (48a) corresponding to the recessed portions are provided in a part of the side wall upper edges (22) and (42) of the container bodies (2) and (4), the hands in the stacked state are stacked. Locking work by lift becomes easy.

In the figure, (19), (29), (39) and (49) are marks for aligning the stacking direction of the container bodies (1), (2), (3) and (4), and the two lower ones The mark positions are changed so that the container bodies (1) and (2) and the upper two container bodies (3) and (4) can also be used as a set of packages, respectively.

The synthetic resin foam which is a constituent material of each of the container bodies (1), (2), (3) and (4) is mainly composed of polyethylene, polypropylene and polyethylene modified with styrene, or ethylene. In-mold bead foams of polyolefin resins such as copolymers and other synthetic resin foams having good oil resistance are preferably used.

That is, when it is used as a one-way type packing device, other synthetic resin foam such as polystyrene resin foam or polyvinyl chloride resin foam can be used, but polystyrene resin foam is used. Since the surface of the body etc. is relatively likely to generate dust and has a problem with oil resistance, when it is used as a two-way type packing device that is repeatedly used, it has moderate toughness and cracks are less likely to occur. Further, the above-mentioned polyolefin resin foam, which is less likely to generate dust on the surface of the foam and has excellent oil resistance, is suitable.

When the assembled parts are to be housed in the container body, a flexible synthetic resin film (about 30 microns, not shown) having excellent oil resistance such as a polyolefin resin such as polyethylene or polypropylene is used as the foam and the housing parts. It is internally installed so as to be interposed between the above-mentioned film and each assembly part is accommodated in each recess (11) (21) (31) (41) from above the film. This film may be used as a single sheet having a considerably large area with respect to the container body, or a plurality of sheets may be used depending on the shape of the recess.

If the upper edge and corners of each storage recess are chamfered in a sloped or rounded shape, the operation of incorporating the film is easy, and tearing occurs when the parts are stored. Without this, the housing operation becomes easy.

Instead of laying and using the above-mentioned film, resin is applied to the inner surface or the upper surface of the recesses (11) (21) (31) (41) of each container body (1) (2) (3) (4). It may be molded so as to form a film layer, or a skin layer of a non-foamed resin may be provided. In this case, it is more effective in preventing the foamed body from being contaminated and preventing the generation of dust, and also facilitates the cleaning after the container body is manufactured, and improves the strength and oil resistance of the foamed body.

Then, for example, in the lowermost container body (1), in the recess (11a) for accommodating the differential gear, as shown in FIG. After accommodating the parts, the differential gear (G) is accommodated in a vertical type with the small diameter gear portion (G2) facing downward.

In addition, a molding tray (16) is fitted and arranged at the bottom of the concave portion (11c) for accommodating the main valve (V), and first the convex shape of the molding tray (16) is provided. The storage holding section (17) is used to store small parts such as small diameter gears, and then the main valve (V).

As for the other container bodies (2), (3) and (4), the parts corresponding to the recesses (21), (31) and (41) are housed by interposing the film in the same manner as described above. The part of the film protruding above is put on the upper surface after the parts are stored, and the whole part is wrapped.

In this way, the four container bodies (1), (2), (3) and (4) are stacked vertically and transported as a set of packing device (A). The uppermost container body (4) is covered with a cover plate (7). Usually, a plurality of the packing devices (A) are stacked on a transportation pallet (6) and loaded in a container or the like for transportation. Therefore, the vertical and horizontal dimensions and heights of the container bodies (1), (2), (3) and (4) and the total height in the stacked state are set according to the container dimensions.

On the pallet, the lower two container bodies (1) and (2) are stacked and the upper two container bodies (3) and (4) are stacked. It can also be stacked and shipped.

In the packed state, however, the small parts are accommodated in the lower part of the large parts, and the thickness of the container body is effectively utilized without waste, and the total height of the stack becomes excessively high. Without increasing the transportation efficiency.

In addition, when the containers are separated and placed on the conveyor of the assembly line in the assembly plant of the destination automobile, the containers (1), (2), (3) and (4) are bottom surfaces. Since there is no step on the inside, there is no inclination and the mounting state is stable, making it easy to take out parts. In addition, transfer work using a hand lift or the like can be easily performed.

The emptied container body is less likely to be damaged by contact with parts, and is not soiled with oil or the like, nor is it dented or deformed. Therefore, the container body can be returned and repeatedly used.

In the above-mentioned embodiment, the packaging device is a combination of stacking four container bodies, but the present invention is not limited to this, and may be a combination of at least two container bodies, Further, it is not limited to one that accommodates two sets of transmission-related or differential-related components, but may be one that accommodates one set of components. In any case, the arrangement of the concave portions of each container body is not limited to that shown in the drawing.

[0063]

[Effect of device]

 As described above, according to the packing device of claims 1 and 2 of the present invention, the large and small parts such as the differential gear can be formed into a thick container without increasing the thickness of the container by making the container thick and thin. By using it three-dimensionally without waste, it is possible to increase the efficiency of storage and not to increase the height. Moreover, since there are no steps on the upper and lower surfaces of the container body, there is no inclination when mounted on the conveyor of the assembly line, and handling and removal of parts are easy.

According to the packing device of claim 3 of the present invention, the gears can be housed and held in the recess without contacting the tooth surface of the gear with the foam, and the inner surface of the container is not scratched or rubbed. There is no possibility that dust from the foam will be generated due to the above, and there is no risk of dust from adhering to the tooth part.

Further, according to the packing apparatus of the fourth aspect of the present invention, even if the oil adhered to the parts to which a relatively large amount of oil adheres, for example, the parts such as the main valve of the transmission, drips Oil can be reliably received by the molding tray to prevent it from adhering to the foam, the foam is not contaminated by oil, and the molding tray prevents damage to the foam surface, enabling repeated use. . When this molding tray is used in combination with a synthetic resin film such as polyethylene or the like, it is possible to effectively prevent the inner surface of the recess from being soiled and from being deformed by oils.

Further, if the material is a foam of polyolefin resin, it is less likely to be damaged or cracked and has excellent oil resistance and chemical resistance. Therefore, it is possible to implement a two-way type packing device on the assumption of repeated use. It gets even easier.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a packaging device of an embodiment of the present invention with each container body separated.

FIG. 2 is a perspective view of a lowermost container body.

FIG. 3 is a plan view of the same container body.

FIG. 4 is a sectional view of the same container body.

FIG. 5 is a perspective view of a molding tray fitted and arranged in a housing recess of the same container body.

FIG. 6 is a cross-sectional view in which a molding tray of the same container body is fitted.

FIG. 7 is a differential diagram of (a) and (b), respectively.
It is a partial expanded sectional view which shows roughly the accommodation state of a gear and accessory parts.

FIG. 8 is a partially enlarged cross-sectional view schematically showing a housed state of gears.

FIG. 9 is a plan view of a second container body.

FIG. 10 is a sectional view of the above.

FIG. 11 is a plan view of a third container body.

FIG. 12 is a sectional view of the above.

FIG. 13 is a plan view of a fourth container body.

FIG. 14 is a sectional view of the above.

FIG. 15 is a schematic perspective view of a transportation state using the packing device.

[Explanation of symbols]

 (A) Packing device (1) (2) (3) (4) Container body (11) (21) (31) (41) Recessed portion (11a) Differential gear storage recessed portion (11b) Small component storage portion (11c) ) Main valve storage recess (14) Projection (15) Step (16) Mold tray (17) Storage holder (24) Bottom recess

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seitaro Matsushita 3068-41 Iida, Mori-machi, Shuchi-gun, Shizuoka Prefecture (68) Tatsuya Eguchi 800-220, Junjima, Nogi-cho, Shimotsuga-gun, Tochigi Prefecture (72) Hideho Takamatsu, Ibaraki 1-2615, Kamehemimi, Sowa-machi, Sarushima-gun, Fukushima Prefecture (72) Inventor Mitsugu Okada 2-2-4-503 Ebizuka, Hamamatsu City, Shizuoka Prefecture (72) Inventor Jun Inoue 2-12-3-102 Sanarudai, Hamamatsu City, Shizuoka Prefecture

Claims (6)

[Scope of utility model registration request] 1. A packing of a type in which at least two container bodies made of synthetic resin foam having a concave portion for accommodating large and small assembled parts on an upper surface are stacked and packed in a state in which the concave portions accommodate the parts. In the device, a storage portion for storing a small component is provided below or in the vicinity of a recess for storing a large component having a relatively large diameter or width, and for storing a small component below the large component accommodated in the recess. Assembling parts packing equipment. 2. A large component is a differential gear having a large-diameter gear portion and a small-diameter gear portion, and a recess for accommodating the large-diameter gear portion can be vertically accommodated and held with the small-diameter gear portion facing down. The apparatus for packing assembled parts according to claim 1, wherein a housing portion for housing small components is provided below a large-diameter gear portion of the differential gear that is formed and is housed in the recess. 3. A packing system in which at least two container bodies made of synthetic resin foam having a concave portion for accommodating large and small assembled parts on an upper surface are stacked and packed in a state that the concave portions accommodate the parts. In the device, a supporting means for supporting the accommodated gears on the side surface excluding the outer peripheral tooth portion, the boss portion, or the inner diameter portion is provided in the recess for accommodating the gears, or between the tooth surface and the foam surface. A packing device for assembling parts, characterized in that the clearance is held in the. 4. A packing system in which at least two container bodies made of synthetic resin foam having a recess for accommodating large and small assembled parts are provided on the upper surface, and the parts are housed in each recess and stacked vertically. In the apparatus, a packing tray for assembling parts, characterized in that a molding tray made of a non-foamed synthetic resin molded product is fitted and arranged at the bottom of a recess for accommodating parts that are relatively oily. 5. The apparatus for packing assembled parts according to claim 4, wherein the forming tray is integrally provided with a housing holding part for holding small parts in the lower part of the large parts. 6. A synthetic resin foam constituting a container body is formed by in-mold bead foam molding of a polyolefin resin such as polyethylene, polypropylene, and a copolymer mainly composed of olefin such as polyethylene modified with styrene. The packaging device for an assembly part according to any one of claims 1 to 5, which is a body.