JPS6248448A - Link band cover - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The object of the invention is a system having individual rigid plates arranged in the same plane which are articulated with each other at adjacent longitudinal sides, A link band cover for guide bands, drives, and structural members on machine tools that have open grooves on the sides and the bottom that are widened at the bottom, and in which joint elements are restrained in multiple grooves. It is.

[Conventional technology]

A link band covering in which the plates are fitted and connected to one another by flexible elements made of plastic is known from German Patent No. 30 20 621. In this known link band covering, the longitudinal edges of the coupling elements are clamped into recesses in the plate during assembly, so that it is difficult to replace the coupling elements if they tear or break. be. Moreover, the plastic coupling elements are partially exposed between the plates and can be damaged by hot cutting chips.

A link band consisting of a number of homogeneous links articulated with each other has a connecting projection with a rotationally symmetrical outer contour on the side of the adjacent link and a connecting bone section of complementary construction on the opposite side. , Federal Republic of Germany Patent Application Publication No. 20
It is known from the document No. 20180. The connecting bones configured complementary to the connecting projections can be pushed into the parts, so that a hinge-like connection with a limited swing angle between the individual links results. Due to the complex shape of the individual links of this known link band, especially the connecting parts, these parts can probably only be manufactured from plastic. However, plastic link bands are not a problem in many applications in machine tools. This is because such link bands are destroyed by hot or red-hot cutting chips.

German Utility Model No. 81 04 252 discloses a mounting skirt consisting of a number of plate-like links, which are articulated with one another in the region of their longitudinal edges, the joint being connected to a commercially available hinge strip. Consisting of
These scraping strips are installed.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION The object of the present invention is to provide a link band cover that is low maintenance, long-lasting, has a joint free of jamming points, and is simple to construct and assemble.

[Means for solving problems]

As a technical solution, hinge rings are restrained at intervals in the multi-grooves of the plates, and these hinge rings are arranged in a straight line in adjacent plates, meshing with each other and on the joint axis that connects the plates. A link band covering as mentioned at the beginning is proposed.

In one embodiment, the plate has on each longitudinal side a recessed groove adapted to the radius of the hinge ring into which the groove opens. Furthermore, the hinge rings are arranged on both sides of the vertical slit.
Preferably, it has legs extending parallel to each other, the leg ends of which are bent outwards and can be restrained in grooves widened at the back of the plate.

The joint shaft is preferably tubular in the embodiment, so that an expansion sleeve with a head projecting beyond the plate can be inserted into the open end of the joint shaft.

The expansion sleeve thereby prevents movement of the joint shaft in the longitudinal direction.

Regarding the combination of materials, the possibilities of heeling are considered depending on whether the link band cover is to be used only as an accident prevention device or whether it is also to prevent the ingress of hot cutting chips and/or coolant into the machine tool. It will be done. In the case of pure failure protection, all structural components, namely the plate, hinge ring, joint shaft and expansion sleeve, can be made of plastic. However, if in practical applications it is necessary to keep hot cutting chips and/or corrosive coolants away from the structural components of the machine tool, the plate should be made of metal, e.g. aluminum or Preferably, it is made of copper and the hinge ring is made of spring steel.

Different materials for the plate layers can also be used.

If the plate has, for example, its base made from aluminium, aluminum alloy or steel, the plate can have on its underside plastic strips parallel to the longitudinal sides, these plastic strips parallel to the platform tracks. Advantageously, the protective plastic strip is inserted into the underside of the board by means of a dovetail guide. Alternatively, the lower side of the plate may consist of plastic and the upper side of aluminum, aluminum alloy or alligator. The plastic underside helps protect the carriageway, and the metal top protects against hot cutting chips. Advantageously, the plate in this case consists of two composite profiles made of different materials for the lower and upper sides, respectively, which composite profiles are connected to one another by dovetail guides.

In another embodiment, a closure piece is fitted laterally on the end face of the plate;
These closure pieces project from the end of the joint shaft and have bayonet projections that correspond to the grooves in the plate. In this case, the insert projection is pushed into the groove of the plate. The closure piece prevents unwanted lateral movement of the individual plates. Furthermore, the closing piece serves to close the end faces of the plate. The height of the closure piece corresponds to the thickness of the board, one end of the closure piece has a circular recess, the other end has a corresponding circular radius, and the recess and radius of the adjacent closure piece are Preferably, they are swingable past each other. These closure pieces can be made from plastic.

A link band covering constructed according to this technical teaching not only has the advantage of a simple construction, but also can be assembled in a self-exciting manner. Repairs are not too troublesome. This is because all individual parts can be exchanged. In embodiments where all structural members are made of metal, the link band shroud has a long life. This is because ideal material combinations can be chosen in the joint, for example spring steel against aluminum or spring copper against plastic.

Further details and advantages will become apparent from the following description of the accompanying drawings, in which part of a link band covering constructed according to the invention is shown.

The link band covering includes a plurality of plates 1 which are articulated with each other.
1 consists of hinge rings 2 and a joint shaft 3 fitted into these hinge rings.

Each plate l has a dimple groove 4 on the vertical side, and this dimple groove @5
is open, and this groove is widened at the bottom. ° There is an edge 6 between the grooves 5 of each plate l, which edge provides sufficient stability. The plate 1 has a flat double T-shaped cross section.

Each hinge ring 2 includes a joint part 7 of circular cross-section with a longitudinal slit 8, followed by legs 9 extending parallel to each other, the leg ends 10 of these legs being bent outwards. There is. The leg end jO has a slope 11 on the end surface. The outer diameter of the joint portion 7 of the hinge ring 2 is approximately as large as the thickness of the plate l.

Since the coupling shaft 3 has the same length as the plate 1 and is of tubular construction, expansion sleeves can be inserted into the open end, the heads of these expansion sleeves protruding slightly beyond the end face of the plate l. ing. The expansion sleeve 12 prevents the joint shaft 3 from moving in the longitudinal direction 1h.

Assembling the link shroud is very easy.

First, hinge rings 2 having legs 9 arranged alternately in opposite directions are arranged on a joint shaft 3. The leg 9 of the hinge ring 2 can then be introduced from the end into the groove 5 of the adjacent plate 1.

A bevel 11 on the leg end 10 of the hinge ring 2 facilitates its introduction into the groove 5. In this case, the bent leg end 10 of the hinge ring 2 is constrained in the groove 5, and the hinge ring surrounds the joint axis and is subjected to a slight initial stress. If the length of the plate does not correspond exactly to a multiple of the width of the hinge ring 2, a mating piece I3 can be fitted in the center.

In the embodiment shown, the plate 1 is made of aluminum, the hinge ring 2 is made of spring steel, and the joint shaft 3 is made of plastic. This combination of materials results in a lightweight, well-movable and corrosion-resistant link band covering with a long service life.

Another embodiment of the plate is shown in FIGS. 4 and 5.

In the embodiment of FIG. 4, the base body of plate I is made of metal, for example aluminum, aluminum alloy or steel.

A plastic strip 15 is inserted into the underside of the plate 1 by means of a dovetail guide 14, which plastic strip 15 is arranged parallel to the longitudinal sides of the plate l. This plastic strip 15 serves to protect the platform track.

In the embodiment of FIG. 5, the plate 1 consists of two composite profiles 16.
17, and these composite profile members have a dovetail guide section 18.
are connected to each other through.

The upper composite profile 16 on the top surface of plate l is made of aluminum;
Made of aluminum alloy or copper, it helps protect against hot cutting chips. The lower composite profile 17 on the underside of the tent is made of plastic or a similar material and serves to protect the platform track.

A closure piece 19 is shown in FIG. 6, which can be made of plastic. This closure piece 19 has two insertion protrusions 20, which can be inserted into the grooves 5 of the plate l, so that the closure piece 1
9 is a board! allows the end face to be closed. The closure piece 19 has a recess 21 at one end (on the left in the drawing) and a rounding 22 at the other end (on the right in the drawing).

FIG. 7 shows two closing pieces 19 which are pressed into the end faces of the two plates l, which are indicated by dashed lines. A joint shaft 3 can be seen between each of these plates l. The rounded part 22 of the closing piece 19 projects beyond the end of the joint shaft 3, so that unintended lateral movement of the individual plates 1 is prevented. Furthermore, the closing piece 19 is attached to a clean end face of the plate l.
It is 515M parts. This is because these plates are open by grooves 5.

[Brief explanation of the drawing]

Fig. 1 is a plan view of two plates connected to each other and provided with a hinge ring on the free longitudinal side; Fig. 2 is a sectional view taken along line [, -■ in Fig. 1; Fig. 3 is a perspective view of the hinge ring. Figure 4 is a perspective view from the underside of the plate fitted with the plastic strip, Figure 5
The figure shows a perspective view from below of a plate consisting of two composite profiles made of different materials; FIG. 6 shows a perspective view of the closure piece; FIG. FIG. ■...Plate, 2...Hinge ring, 3...Joint shaft, 5...
··groove

Claims (1)

[Scope of Claims] 1 having individual coplanar rigid plates (1) articulated with each other at adjacent longitudinal sides, these plates (
1) is on the vertical side, and an open groove (5
) and a coupling element is restrained in each groove (5),
In link band coverings for guide bands, drives and accident-prone structural members in machine tools, hinge rings (2) are restrained at a distance from each other in each groove (5), and the adjacent plates (1) are restrained. A link band cover characterized in that the hinge rings (2) mesh with each other in a straight line and are arranged on a joint axis (3) connecting the plates (1). 2. The plate (1) has on each longitudinal side a recessed groove (4) aligned with the radius of the hinge ring (2), into which a groove (5) is inserted.
Claim 1, characterized in that the is open.
Link obi cover as described in section. 3. The hinge ring (2) has legs (9) arranged on both sides of the longitudinal slit (8) and extending parallel to each other, and the leg ends (10) of these legs are bent outwards. Link band covering according to one of the claims 1 and 2, characterized in that: 4. Link band covering according to one of claims 1 to 3, characterized in that the leg end (10) has a slope (11) on the end face. 5. Link band cover according to one of claims 1 to 4, characterized in that the joint shaft (3) is constructed in a tubular shape. 6. Claim 5, characterized in that an expansion sleeve (12) with a head projecting beyond the plate (1) is fitted into the open end of the joint shaft (3). Link obi cover mentioned. 7. Link band covering according to one of claims 1 to 6, characterized in that the diameter of the hinge ring (2) approximately corresponds to the thickness of the plate (1). 8 The hinge ring (2) receives the initial stress and the groove (5) of the plate (1)
8. Link band cover according to claim 1, characterized in that it is fitted into a link band cover. 9. Link band covering according to one of claims 1 to 8, characterized in that the plate (1) is made of plastic, aluminum or steel. 10. The device according to one of claims 1 to 9, characterized in that the plate (1) has on its underside a plastic strip (15) parallel to the longitudinal sides. Link obi cover. 11 The plastic strip (15) is connected to the dovetail guide (14).
11. Link band cover according to claim 10, characterized in that the link band cover is inserted into the lower surface of the plate (1) by means of . 12. Link band covering according to one of claims 1 to 9, characterized in that the lower side of the plate (1) is made of plastic and the upper side is made of aluminum, aluminum alloy or steel. 13. The plate (1) consists of two composite profiles (16, 17) of different materials for the lower and upper surfaces, respectively, which are connected to each other by dovetail guides (18). The link band cover according to claim 12, characterized in that: 14. Link band cover according to one of claims 1 to 13, characterized in that the hinge ring (2) is made of plastic or spring steel. 15. Link band covering according to one of claims 1 to 14, characterized in that the joint shaft (3) is made of plastic, aluminum or steel. 16 Closing pieces (19) are fitted to the sides of the end face of the plate (1), and these closing pieces protrude from the end of the joint shaft (3) and correspond to the grooves (5) of the plate (1). Link band cover according to one of the claims 1 to 15, characterized in that it has a plug-in projection (20) that is configured to 17 The height of the closure piece (19) corresponds to the thickness of the plate (1), one end of the closure piece (19) has a circular recess (21), and the other end has a corresponding circular rounded part (22). 17. Link band covering according to claim 16, characterized in that the recesses (21) and the radii (22) of adjacent closure pieces swingably pass past each other.