EP2364929A1 - Workpiece holder, designed as a plastic container - Google Patents

Abstract

The holder has an insert (12) with a base plate (13) that is provided with center sleeves (21) on an inner floor space, where the sleeves are arranged parallely at a distance to each other. The sleeves comprise a conically pointed insertion ramp, and form a supporting element (23) running between the center sleeves transverse over a breadth of the base plate. Supporting ribs (27) are integrally formed orthogonal to the supporting elements between the supporting elements and the base plate of the insert. The supporting elements are formed by vertical ribs.

Description

The invention relates to a workpiece carrier, designed as a plastic container, in particular made in one piece by injection molding, which has a separate insert with Werkstückhaltemittein for receiving workpieces, is provided with internal locking means and wherein the insert with the locking means anchoring counter-locking means and consists of a base plate, at the side edges of each of which an integrally formed from the inner surface of the base plate in the vertical direction spacer profile is formed, wherein the insert can be used with the spacer profiles leading in the container, as by the US 2007 / 023303A1 known.

From the FR 2 825 988 A1 For example, there is known a reusable package in the form of a container having on a common base primary fasteners receiving complementary secondary fasteners. The secondary fastening means are provided with positioning elements which are adapted to the shape of the products to be packaged. When changing or changing the products to be packaged, it is necessary to exchange or adjust the positioning elements.

By the DE 20 2006 005 284 U1 a container for receiving solar cells has become known. In this container, a solar cell receiving insert is introduced, which is latched to the container. For larger solar cells is intended to store them without use in the container. The solar cells are stacked in the container.

By the DE 36 30 566 C2 or the DE 37 03 317 A1 have become known for the internal transport of workpieces or mounting parts as well as for the transport of these parts from the manufacturing plant to the assembly plant and the supply of workpieces to automatically loaded assembly machines serving workpiece carrier. The stored workpieces are in this case by projections and / or depressions, ie recorded by mold cavities, which allows both automated handling and safe transport, in which the individual workpieces should not touch.

This known workpiece carrier is made of two plastic parts and consists of a frame and a plate provided with the mold cavities (openings and / or depressions and / or projections). The deep-drawn or injection-molded plastic sheet is thereby slipped over the frame and thus simultaneously increases the stability of the workpiece carrier.

Apart from the fact that the production of these workpiece carriers associated with several operations and thus consuming, occurs despite the Überstülpplatte a default, especially in the automated loading and unloading of the workpiece carrier. Safe storage and safe transport can no longer be guaranteed.

The invention is therefore based on the object to provide a generic workpiece carrier, which makes it possible in particular in a simple manner to position the insert in relation to the workpiece carrier.

This object is achieved in that the spacer profiles each have at their free ends a top plate, which is formed on its surface with locking means of the container bottom complementary centering are. When inserting the insert into the container, the centering segments respectively engage or engage according to their distributed arrangement in grooves of a centering cross, preferably in the container bottom, whereby the insert is centered and locked horizontally in a manner secure against movement.

For secure locking of the insert with the container, the invention provides that protrude at two opposite distance profiles, the top plates on the side edge of the base plate, wherein the protruding into the slot-shaped locking openings of the container walls can be latched. By the locking engagement of the free headboard ends of the insert is vertically secure in the container fixed.

For safe and play-free mounting of the contents or the workpieces, the insert may be formed on the inner surface of its base plate with parallel spaced guide sleeves. The guide sleeves can advantageously be assigned across the width of the base plate extending and preferably formed with ribs for preventing rotation support elements.

An embodiment of the invention provides that the base plate of the insert is formed on its terminating with the container upper edge outer surface with a plurality of circumferentially distributed around the openings of the guide sleeves centering holes. It can thus be stored workpieces that have, for example, a shaft and an educated, large-scale form or headboard. After insertion of the shaft in the guide sleeve, the area compared to the guide sleeve opening significantly larger molding is thus on the outer bottom surface adjacent to the guide sleeve opening of the insert base plate. In this area formed on the underside of the workpiece centering cams can engage in the center holes, creating a unintentional rotation or pivoting movement of the workpiece is effectively prevented.

Fig. 1

einen Werkstückträger in einer perspektivischen Draufsicht in das Behälterinnere mit dort an den Behälterwänden ausgebildeten Rastmitteln und in der Bodenfläche ausgeformten Vertiefungen;

Fig. 2

den Behälter gemäß Fig. 1 in der Draufsicht, die ein aus den bodenseitigen Vertiefungen gebildetes Zentriernutenkreuz zeigt;

Fig. 3

den Behälter gemäß Fig. 1 in einer perspektivischen Draufsicht vom äußeren Behälterboden her gesehen;

Fig. 4

in einer perspektivischen Gesamtansicht als Einzelheit eine Ausführung eines in den Behälter gemäß Fig. 1 einbringbaren Einsatzes mit Führungshülsen zur Aufnahme von Werkstücken und an den vier Seitenrändern angeordneten Distanzprofilen;

Fig. 5

den Einsatz gemäß Fig. 4 von der Unterseite her gesehen; und

Fig. 6

in einer perspektivischen Draufsicht den Behälter gemäß Fig. 1 mit über Kopf eingebrachtem Einsatz gemäß Fig. 4.

Further features and details of the invention will become apparent from the claims and the following description of illustrated in the drawings embodiments of the invention. Show it:

Fig. 1

a workpiece carrier in a perspective plan view into the container interior with there formed on the container walls locking means and in the bottom surface formed recesses;

Fig. 2

the container according to Fig. 1 in plan view showing a centering cross formed by the bottom depressions;

Fig. 3

the container according to Fig. 1 seen in a perspective plan view of the outer container bottom forth;

Fig. 4

in a perspective overall view as a detail of an embodiment of the container according to Fig. 1 insertable insert with guide sleeves for receiving workpieces and arranged on the four side edges spacer profiles;

Fig. 5

the use according to Fig. 4 seen from the bottom; and

Fig. 6

in a perspective plan view of the container according to Fig. 1 with inserted above head according to Fig. 4 ,

An in Fig. 1 illustrated workpiece carrier 1 in rectangular container design is made in one piece by injection molding of plastic and has a closed bottom 2 and longitudinal walls 3 and end walls 4. In the inner surface 5 the container bottom 2 are elongated recesses 6 are formed, which, starting from the center of the container bottom 2 a Zentriernutenkreuz 7 result (see Fig. 2 ).

The inner surfaces 8 of the end walls 4 are provided on the one hand with horizontal, stepped spaced apart locking webs 9 and on the other hand formed at their bottom ends 10 with slot-shaped locking openings 11.

For safe transport and protected storage of workpieces within the workpiece carrier 1 1 snap-in inserts are provided in the workpiece carrier.

An in 4 to 6 illustrated insert 28 has a base plate 29, at the side edges 30a, b, c, d each one of the inner surface 31 in the vertical direction downwardly extending spacer profile 32a, b, c, d is formed. In addition, on the inner surface 31 of the base plate 29 in the installed position in the workpiece carrier projecting guide sleeves 35 molded.

The spacer profiles 32a, b, c, d are provided at their upper end with top plates 33a, b, c, d, on the surface thereof with centering elements 34 complementary to the depressions 6 or the centering cross 7 of the container bottom 2.

The top plates 33b and 33d of the spacer profiles 32b and 32d project beyond the side edges 30b and 30d of the base plate 29 and engage in the slot-shaped detent openings after insertion of the insert 28, which is inserted in advance with the spacer profiles 32a, b, c, d 11 of the workpiece carrier 1 a. Along with this, the centering elements 34 integrally formed on the top plates 33a, b, c, d engage in the grooves of the centering cross 7 and fix the insert 28 in a manner secure against movement on the container bottom 2.

In this case, it is in the design framework that, instead of the top plates 33b and 33d, the top plates 33a and 33c are formed with protruding ends for latching engagement in the slot-shaped latching openings 11.

A workpiece carrier 1 latched with such an insert 28, wherein in the installed position the outer surface 37 of the base plate 29 of the insert 28 extends approximately at a height with the workpiece carrier upper edge 36 (cf. Fig. 5 and 6 ), is used for storage and transport of workpieces that have a shaft and a one-piece processing head or with respect to the shaft significantly larger molding, such as a planetary gear. Such a workpiece is inserted from the outer surface 37 of the base plate 29 forth with the shaft or the like pin in the cavity or the cylindrical opening of the guide sleeve 35 and thus received and held by the guide sleeve 35. The larger sized head or the molding of the workpiece, however, comes on the outer surface 37 of the base plate 29 to the plant.

For additional fixing and holding also the head or molding of such a tool 35 enlarged insert recesses 38 are introduced into the outer surface 37 on the one hand with respect to the diameter of the guide sleeves. On the other hand, the insertion recesses 38 are circumferentially distributed centering holes 39 associated, can engage in the formed on the underside of the head or mold parts of the workpiece centering cam.

To optimize the correct positioning of the workpieces or their head / mold parts on the base plate 29 also vertical rib webs 40 having stop elements 41 are provided on the outer surface 37. The stop elements 41 effectively prevent in conjunction with the rib webs 40 a rotation of the workpieces and ensure that the head or moldings of the workpieces are kept safe and centered.

Furthermore, the recesses 6 and the grooves of the Zentrierkreuzes 7 are provided with drain openings 42, which may optionally be aligned with the centering sleeves 21 of the insert 12 or the guide sleeves 35 of the insert 28 and an unhindered flow of water accumulation in the workpiece carrier 1 and / or on the Inserts 12, 28 or allow them centered workpieces.

In the corner regions of the workpiece carrier 1 each centering openings 43 are introduced into the container bottom 2 (see. Fig. 2 ), in particular to ensure an orientation of the workpiece carrier 1 during transport by, for example, lifting devices, roller conveyors or belt conveyors.

LIST OF REFERENCE NUMBERS

1

Workpiece carrier

2

container bottom

3

longitudinal walls

4

end walls

5

palm

6

Depressions

7

Centering cross (latching means)

8th

inner surfaces

9

detent webs

10

bottom ends

11

latching openings

28

Use / ticking

29

baseplate

30a-30d

margins

31

palm

32a-32d

spacer profiles

33a-33d

head plates

34

centering

35

guide sleeves

36

Workpiece carrier upper edge

37

outer surface

38

use wells

39

centering

40

rib webs

41

stop elements

42

drain holes

43

centering

44

head Start

Claims (4)

Workpiece carrier (1), designed as a plastic container, in particular produced in one piece by injection molding, which has a separate insert (28) with workpiece holding means (35) for receiving workpieces, with internal locking means (9; 6, 7) is provided and wherein the insert with the latching means anchoring counter-latching means and consists of a base plate (29), at whose side edges (30a, b, c, d) in each case from the inner surface (31) of the base plate (29) in the vertical direction extending spacer profile (32a, b , c, d), wherein the insert (28) with the spacer profiles (32a, b, c, d) is insertable into the container (1) leading,
characterized,
in that the spacer profiles (32a, b, c, d) each have at their free ends a top plate (33a, b, c, d) which has on its surface centering segments complementary to latching means (6, 7) of the container bottom (2) ( 34) are formed. Workpiece carrier according to claim 1,
characterized,
that at two opposing spacer profiles (32b, 32d; 32a, 32c) of the head plates (33b, 33d; 33a, 33c) on the side edge (30b, 30d; 30a, 30c) protrude from the base plate (29), wherein the protruding ends in slot-shaped latching openings (11) of the container walls (4.8) can be latched. Workpiece carrier according to claim 1 or 2,
characterized,
in that the insert (28) is formed on the inner surface (31) of its base plate (29) with guide sleeves (35) spaced parallel from one another. Workpiece carrier according to one of the claims 3,
characterized,
in that the base plate (29) of the insert (28) is formed on its outer surface (37), which terminates circumferentially distributed around the openings of the guide sleeves (35), on its outer surface (37) surrounded by the upper edge of the container (36).

Images