DE1112825B - Machine for assembling parquet strips to make mosaic parquet - Google Patents

Description

For the production of mosaic parquet, parquet strips are put together in groups and these Groups with different fiber directions laid next to each other. These adjacent Groups of a plate are each rotated by 90 ° with respect to the fiber direction. For example In this way, sixteen groups can be combined to form a square parquet board. The rotation of the panels has so far been done essentially manually, with the groups individually in a chessboard-like manner laid or first assembled into panels and then laid.

There is already a machine for the automatic production of such panels known in which the Parquet strips are fed in from one direction via a conveyor belt. This conveyor belt leads to a Another conveyor belt offset by 90 °, on which the bars are placed in batches. A circling one Holder grabs a group of parquet rods on the first conveyor belt and guides them Group at a second point on the second conveyor belt offset by 90 ° towards this. This machine has the disadvantage that two conveyor belts have to be used and that of the orbiting one Holder gripped rods can tilt in the circular guide. Besides, not several Groups of bars can be placed on the second conveyor belt at the same time is the number of the plates produced in a unit of time are relatively low.

The invention is based on the object in a machine for the automatic production of Mosaic parquet to avoid the disadvantages mentioned.

In a machine for assembling parquet strips to form adjacent groups different fiber directions with a conveyor belt feeding the rods from one direction is provided, are according to the invention above the conveyor belt for receiving parquet rod groups several grippers arranged one behind the other in the direction of advance of the conveyor belt and mounted on slide rails transversely to this in the direction of a molding table; the grippers are rotatable by 90 °.

The movements of the grippers are preferably controlled automatically, in such a way that each is not adjacent Grippers are rotated during their advance to the forming table. At the end of the conveyor belt a contact is expediently arranged, which upon contact with the in the transport direction foremost rod triggers the movements of the gripper.

Assembly machine
from parquet strips to mosaic parquet

Applicant:

Michael Weinig KG,
Tauberbischofsheim (Bad.)

Claimed priority:
Netherlands of October 31, 1957 (No. 222 030)

ao At the end of the forming table, as is known, a slide is arranged through which the from the Parquet strips deposited in front of the pusher are conveyed onto the forming table by grippers. This slide can e.g. B. be operated hydraulically.

The rotation of the plates can be adjusted, for example, with the aid of attached to the clamping jaws Gears or other suitable switching elements are effected. To during the Rotation to avoid the collision of the clamping jaws, the slide rails run with the to rotating grippers and the slide rails whose grippers are not rotated during the rotation the gripper at different heights in order to return to the same height after the rotation. the Slide rails can also run at the same height if the distance between the grippers is made so large that collision cannot occur during rotation.

After the panels have been placed on the molding table, the grippers return to their starting position back again. Since when loosening the plates, the rotated clamping jaws of the grippers move when laying are partially between the plates on the molding table, the slide rails run so far apart that that the grippers have just enough space around the clamping jaws during laying to be able to solve freely. The gripping and releasing of the bars or the squared plates Bars in the starting or end position of the gripper is caused by contacts.

The plates placed on the molding table are fed in the direction in which they are fed to the molding table

109 678/16

have been, compressed by a for example with compressed air or hydraulically or mechanically operated slide 6 and by conical guide rails Sa on the longitudinal sides of the molding table, so that they form a table.

An embodiment of the invention is described with reference to the drawings.

Fig. 1 shows a plan view of the device according to the invention. With 1 the parquet rods are designated, with 2 a contact which controls the clamping jaws a, b, c and d when moving the rods in the direction of the contact. Each time so many bars are grasped by the grippers that they form a square lying parallel to each other. In the present case, five bars are picked up by the grippers. After picking up the rods, the grippers move upwards automatically and are then with the help of a. Rod system 3 is fed to the slide rails 7 along the molding table 5, for example by a device 4 operated with compressed air, hydraulically or mechanically. During this sliding movement, the clamping jaws b and d are rotated 90 ° about their axis so that the bars (plates) forming the squares are placed on the molding table in such a way that the bars of one plate form a right angle with the bars of the square plates adjacent to it . After the rotation, the plates are placed on the molding table 5, pushed by the slide 6 in the direction of their feed up to the previous row of plates 5 b and pressed together by the conical guide rails 5 a on the long sides of the molding table.

Fig. 2 shows a cross section of a gripper and the forming table 5;

Fig. 3 is a side view of the gripper and

4 shows a cross section through part of the gripper.

From Fig. 2 is the level difference e of the slide rail? can be seen, which enables the mutual rotation of the clamping jaws. The rotation of the Clamping takes place at the highest position of the gripper, while the gripper moves over the distance /.

When the gripper is in the starting position, the push rod 10 is actuated and thus the clamping jaws are clamped. In the end position of the gripper there is a similar operating mechanism 9, whereby the cover 11 of the hollow rods 12 is pressed down and the clamping jaws are released. The clamping jaws are kept closed by the spring 13. A toothed wheel 14 is attached to the clamping jaws and is rotated by contact with the toothed bar 20. When the gripper goes back to the starting position, this causes a rotation in the opposite direction.

The fork 16 to which the clamping jaws are attached can rotate in the housing 15. The case 15 slides with the conical ends 22 in the slide rail 7. Through the fork 16, the hollow rod 12 are moved up and down, whereby the jaws can be opened and closed. The cave Rod 12 can be locked in the lowest position by the pawl 18, the pawl 18 falls into the snap groove of the fork 16 as a result of the pressure of the spring 19. By pushing in the pen 10, which is located in the hollow rod 12, the pawl 18 is lifted out of the snap groove, whereby the rod 12 moves upwards by the pressure of the spring 13 and thus the clamping jaw is closed. The toothed bar 20 is adjusted by means of a regulating mechanism 21 in such a way that

ίο that this the gear 14 and thus the gripper brings with the clamping jaws in rotating motion. are the arms of the gripper.

It is easily possible, instead of one belt for the transport of the bars, to arrange two such belts running parallel (I and II in FIGS. 5 and 7) and accordingly two rows of grippers. In such a case, the parquet strips on band I can have a different color than those on band II. By coupling the grippers and separate drive of the grippers, all panels are rotated from the rods of band I (Fig. 7), while the panels are turned off the bars of Volume II are not. Because the grippers α and c have a longer stroke equal to the distance between I and II than the grippers b and d, the mosaic panel shown in FIG. 6 is produced.

Claims (6)

PATENT CLAIMS: 1. Machine for assembling parquet rods into adjacent groups of different fiber directions, which is provided with a conveyor belt feeding the rods from one direction, characterized in that above the conveyor belt (1) for receiving groups of parquet rods several grippers (α to d) in the feed direction of the conveyor belt (1) arranged one behind the other and mounted on slide rails (7) transversely thereto in the direction of a molding table (5) and that the grippers (α to d) can be rotated through 90 °. 2. Machine according to claim 1, characterized by a non-adjacent Greiferia, c) control rotating during its advance. 3. Machine according to claim 1 and 2, characterized in that a contact (2) is arranged at the end of the conveyor belt (1), which triggers the movements of the grippers (a to d) upon contact with the foremost rod in the transport direction. 4. Machine according to claim 1 and 2 or 3, characterized in that on both sides of the molding table (5) curved guide rails (5 a) are arranged. 5. Machine according to claim 1 and one or more of the other claims, characterized in that that the slide rails (7) for the gripper are curved in the vertical direction. 6. Machine according to claim 1 and one or more of the other claims, characterized in that two conveyor belts (I, II) with two rows of grippers (</ to d ', α "to d") are arranged in parallel. For this! Sheet of drawings