DE2233582A1 - PRESS FOR THE MANUFACTURE OF WOODEN FRAMEWORK PANELS, CARRIERS OR THE LIKE - Google Patents

Description

Patent attorney patent attorneys

Dr. phil. Gerhard Henkel Dr. rer. nat. Wolf-Dieter Henkel

D-757 Baden-Baden Balg Dipl.-Ing. Ralf M. Kern

Waldgasse 20 r \ · *. ■ ».

Tel.:(07221)63427 Dr. rer. nat. Lothar Feiler

T "l" y.-Adf .: tlllptofcl Badw lid— D-8 ΜϋΠαίθΠ 90

Eduard-Sdwnld-Str. 2 Γ ~ 1 Tel .: (0811) 663197

T «l * gr.-addr. ι Elllptoid MOndtwi

Automated Building ™ ": ... 323M

Components, Inc.

Miami, Fla., V.St.A.

_L _, July 7

Under Zeldian:

Press for the production of wooden half-timbered fields, girders or the like

The invention relates to a new and improved press, in particular for driving so-called claw plates into the bumps of wooden trusses and the like.

The construction industry has been doing recently since its inception the prefabricated wooden trusses, fields or building panels and the like made considerable progress. Such Beams, for example trusses, consist of wooden frame members, which in most cases are attached to their joints are interconnected by claw plates of the type described in US Pat. No. 2,877,520. A number of methods for Attachment of the claw plates to the butt joints, for example by hand nailing, using separate power presses on each joint, etc., have proven to be time-consuming, laborious, laborious and for the automated series production of trusses «UL« r proved not to be useful.

The truss-manufacturing technology has progressed far derzeit'so that kraftbetätigbo presses -to "Iiintreiben the

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Claw plates in the butt joints of wooden frame members be used. In such a process, the frame members are placed on a clamping table in the master of the truss pre-aligned, with the claw plates to both Sides of the butt joints of these links are arranged. Then the claw plates are in the butt joints driven to connect the frame members together and a finished truss, a truss field or the like to build. Presses suitable for performing the aforementioned operations are disclosed in U.S. Patents 3,079,607 "and US Pat 3 195 449.

In U.S. patent application serial no. 867 730 are a knee joint press, which is arranged to be movable along a guide, as well as a control system for periodically stopping the press disclosed in a pressing position, in which the press plate is above the claw plates on the butt joints of the Support members is located. The press according to this patent application is explained in more detail in US Pat. No. 5,520,252. Although this The press works satisfactorily, especially when the load is practically evenly distributed over the press, asymmetrical loads created difficulties. Such loads are caused, for example, by differences in position in the Connections of different types and sizes of trusses evoked. In addition, in the case of the presses which have pressurized fluid actuated cylinders at both ends, e.g. the presses of U.S. Patents 3,079,607 and 3,195,449, in general only the cylinder or cylinders at one end of the press are effective against the eccentric load. As a result, the The performance of these presses in the event of asymmetrical loads practically affects the performance of the one at one end of the press provided cylinder is limited.

In contrast, the invention creates a novel and improved, (! L'uokfLuidumbefcierte press, which the above

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and other presses of this type inherent disadvantages and eliminates and / or alleviates difficulties and has various advantages in comparison to the known presses in terms of construction and operation. The invention The press is particularly suitable for driving claw plates into the butt joints of wooden support links for the production of lattice girders, fields and the like, where asymmetrical loads can occur. More precisely * the press according to the invention is mounted on wheels and can be moved along rails or guides. The press has a lower support structure or a base and a free one movable press head on which a slidably guided on it upper press plate on the base to and away from him movable carries. At each end of the press a pressurized fluid-operated cylinder is provided between the base and the head. In addition, appropriate guides are provided at both ends of the press.

In operation, a clamping table is arranged above the rails. The wooden support links are patterned on the clamping table of a truss, field or the like, with the claw plates on both sides of the butt joints of the support links. The press is then moved along the clamping table. As often as there is a butt joint with the previously straightened claw plates is located between the press plates, the press stops and drives the claw plates into the Connection and then moves on to the next connection point.

A feature of the invention is that when the Press is subject to asymmetrical loads, the unused press power at one end of the press on their other end is transferred to an even load

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across the entire length of the press. To this end, the two ends of the press are connected to a load transfer device connected to each other, at each end a pivoted bell crank and two Has rods which are pivotally connected at their two ends to the angle lever and to the movable press head. A connecting rod connects the angle levers at the two ends of the press.

When asymmetrical loading occurs, the cylinder force exerted on the unloaded or partially loaded end of the press via the bolts or arms, the angle levers and transfer the connecting rod to the loaded end. More precisely, the bolts or arms are at the unloaded position or partially loaded press end under compressive load and pivot the angle lever in such a way that the connecting rod is placed under compressive stress. The one at the loaded end of the press existing angle lever is rotated in the opposite direction. When turning the last-mentioned angle lever the bolts or arms come under tensile stress at the loaded end of the press. The overall result of this effect is that the force exerted by the cylinder at the unloaded or partially loaded end on the press head partly on the fully loaded Press end is transferred. The use of the load transfer device according to the invention also increases the capacity of the press is practically based on the sum of the capacities or performance of the individual cylinders at the two ends of the press .

The object of the invention is therefore primarily to create a new and improved press for driving Claw plates in the butt joints of pre-aligned wooden support members for the production of trusses, fields and the like that have a load transfer device

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has, which is especially useful for working with asymmetrical press loads.

The press performance should be practically the sum of the performance of the individual cylinders at the two ends of the press.

The aforementioned press should be movable along a guide on wheels be.

In addition, the press according to the invention should be resistant and robust and also cheap to manufacture.

The following is a preferred embodiment of the invention explained in more detail with reference to drawings. It shows!

Pig. 1 is a side view of a press with the features of FIG Invention,

Pig. 2 is a plan view of the press of FIG. 1, FIG. 5 is an end view of the same, and FIG

4 and 5 are partial sections on an enlarged scale approximately along the lines 4-4 and 5-5 in Fig. J5

The press 10 shown in Fig. 1 has a substructure or base 12 and a freely movable upper press head 14, which can be moved towards and away from the base 12. A lower press plate 16 is mounted on the upper edge of the base 12, while an upper press plate 18 is arranged on the lower edge of the press head 14. Two horizontal supports 20 reach under the base 12 at the two ends of the press 10. From the opposite ends of each support 20 go two Support arms 22 from which with their upper ends on the upper edge of the Base 12 are attached. Each support 20 carries a pair of wheels,

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More precisely, the support 20 carries at one end of the press two wheels 24 with a flat tread, while the one on the other Press end provided support 20 carries two wheels 2β provided with running groove, which are guided on a guide rail 28, which in turn consists of an inverted V-shaped angle profile. The press 10 is thus longitudinal in the horizontal direction a predetermined trajectory guided movably over a distance which is at least the greatest length of the one to be produced Carrier corresponds. Obviously, the press according to the invention can be used in the manner described in US patent application serial no. 867 730, the disclosure of which is hereby incorporated by reference Truss manufacturing system can be used. With reference to this manufacturing system, it can be said that the press 10 can be moved along the rail 28 relative to the clamping table, which is the butt joints of the various, the truss, the truss field or the like forming pre-aligned support members carries, wherein the claw plates are set on both sides of the connections and the clamping table and support members or framework field members between the Press plates 16 and 18 run through. The press stops at each butt joint, followed by the movable press head 14 drives the claw plates into the butt joint and then moves away from the finished joint. Then the Move the press to the next butt joint and repeat the process.

The base 12 carries a face plate 30 at each end each of which on opposite sides each have two perpendicular spaced guides 32 with each other perpendicular aligned holes. The movable press head 1% also carries a face plate 3 ^ * of them at each end each is provided on its two sides with two perpendicular guides 36 each having a spacing from one another. At either end the press 10 are each two guide bolts 38 in the bores

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of guides j52 and 36 are used, these bolts respectively are attached to one of the upper guides j5ö. The movable one Press head 14 is thus perpendicular to the substructure or base 12 guided to and away from it movable.

To move the movable press head 14 to and from the base 12 To move it away, there is a pressure fluid actuated at each end of the press Cylinder 40 switched between base 12 and press head 14. More precisely, it is at each end of the press one cylinder 40 each on one on the face plate ^ 4 of the press head 14 attached eye 42 articulated. The piston rod 44 protruding downward from the cylinder 40 ends in a fork head 46, which is pivotable with one on the face plate 30 of the Base 12 attached eye 48 is connected. It can therefore be seen that when the piston rod 44 is extended and retracted in and out of the cylinder, the press head 14 is displaced downwards and upwards respectively relative to the base 12. To operate the cylinder 4o corresponding pressure fluid circuits, not shown, are provided.

A feature of the invention is that a load transfer device to compensate for the load absorbed by the cylinders, especially when the press is more asymmetrical Is subject to load, is provided. In this way, the loads can be longitudinally independent of the asymmetrical position the press can be used to full capacity at any point between the press plates. For this purpose are according to the invention provided at the opposite ends of the press 10 each Winkelhe.bel 50a and 50b, which on pin 52a or 52b are hinged to the base 12. The outwardly projecting legs 54a and 54b of the angle levers 50a and 50b are respectively with the lower end of two arms 56 by means of a pin 58 pivotally connected, the upper ends of which are articulated to two links 60 rigidly attached to the head part 14. So it is

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It can be seen that when the press head 14 is moved towards and away from the base 12, the angle lever 50a according to FIG. 1 is pivoted clockwise and counterclockwise. At the same time, the angle lever 50b is pivoted counterclockwise or clockwise.The lower leg 62a of the angle lever 50a is connected to a shackle 64a, while the upper leg 62b of the angle lever 50b is pivotably connected to a shackle 64b. The other ends of the shackles 64a and 64b are each rigidly attached to the two ends of a connecting rod 66 , which consists of a rigid steel tube, which extends between the two ends of the press and under the lower press plate 16.

It is thus seen that during the movement of the press head 14 in the direction of the base 12, the left on FIG. 1 the end of the press 10 provided arms 56 50b can be pivoted in the counterclockwise direction the angle lever, the connecting rod 66 against the angle lever 50b draw. At the same time, the arms 56 provided at the right end of the press according to FIG. 1 pivot the angle lever 50a in a clockwise direction, so that the relevant end of the connecting rod 66 is displaced towards the opposite end of the press. More precisely, if the load exerted on the press is evenly distributed over the press plates, the connecting rod 66 merely follows the movement of the angle levers 50a and 50b without being itself loaded. If, on the other hand, an asymmetrical load occurs, which is caused, for example, by a carrier connection in the right end of the press, indicated at J in FIG. 1, the above-described movement of the arms, the angle lever and the connecting rod is repeated. In this case, however, the unloaded or partially loaded cylinder at the other end of the press endeavors to pivot the angle lever 50b counterclockwise so that the connecting rod 66 comes under a tensile load. This means that the connecting rod 66 strives to the angle lever 50a

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to pivot clockwise, and therefore the right end of the movable press head · 14 moves against the press platen, so that the unused capacity of the left Cylinder is added to the full capacity of the cylinder located on the right side of the press.

If, on the other hand, there is a butt joint J am. According to Pig. At the left end of the press between the press plates, the angled lever 50a located on the left side of the press tends to pivot clockwise when the relevant cylinder is actuated, whereby the connecting rod 66 comes under a pressure load. The unused power of the cylinder 40 located at the right end of the press is transferred via the connecting rod and tries to pivot the angle lever 50b located at the left end of the press counterclockwise, whereby this unused power is transferred to the left side of the press. In this way, the full power of the cylinders is applied to the load, regardless of their position along the press.

The lower press platen also carries a number of rollers 68 which are spring-loaded so that they are somewhat over the top of the lower press plate 16 protrude. These roles are used to keep the clamping table, not shown, at a distance to hold by the lower press plate 12 and in this way the movement of the press relative to the fixed clamping table to facilitate.

Of course, the invention can be used in other specific Embodiments are realized without departing from their scope or its essential characteristics are deviated from. For this reason, the embodiment shown above is intended to be considered in all respects only as illustrative and in no way restrictive of the invention, rather, the

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Invention include all changes and modifications within the extended scope of protection.

In summary, the invention therefore also creates a press a substructure or base carrying a press platen and a freely movable press head carrying a press platen, which can be moved towards and away from the base · At each end of the press there is a pressurized fluid-operated cylinder intended for raising and lowering the press head. A load transfer arrangement connecting the two ends of the press to one another has a connecting rod, the opposite ends of which at both ends of the base with angle levers are connected. Bolts or arms provided at both ends of the press are between the bell crank and the press head switched on. When the press is subjected to asymmetrical loads, the load transfer assembly transmits one Part of the force exerted by the cylinder at one end of the press on the press head on the press head at the other end of the press Press head.

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Claims (1)

- li - Automated Building Components, Inc,
Miami, Fla., V.St "A. ■ P a tentan claims Press for the production of wooden panels, beams and the like, characterized by a substructure or base (12) with a press plate (16), a press head (14) with a press plate (18) facing the said press plate, a press head and the base for the purpose of enabling a reciprocating movement of the former relative to the latter interconnecting device, each with a pressurized fluid-actuated cylinder (40) connected at both ends of the press (10) between the press head and base and one between the two ends of the press activated device ( 50-66) for transmitting part of the force exerted on the press head by the cylinder located at one end of the press to the part of the press head located at the other end of the press. Press according to claim 1, characterized in that the connecting device at each of the two press ends has an angle lever (50a, 50b) articulated on the base (12), a connecting rod (66) connecting the angle levers to one another, and between the angle levers at the two press ends and the press head (14) has turned-on arms (56) wherein the arms _which: angle lever and the connecting rod are arranged such that, when - 12 309 8 1 7/0208 a rotation of one angle lever when moving the press head on the base to the other angle lever is twisted in the opposite direction. j5. Press according to claim 2, characterized in that at asymmetrical press loads the arm at one press end of a pressure load and the arm at the other press end is exposed to a tensile load. 4. Press according to claim 1, characterized in that the Base (12) several wheels (24, 26) in support of the press (10) that carries the wheels on the opposite one Ends of the press are arranged and that at least one of the wheels engages with a guide rail (28), such that the press can be moved along the guide rail. 5. Press according to claim 1, characterized in that the connecting device has a power transmission or connecting rod (66) which is coupled to the base (12) and the press head (14) in such a way that it is at the two ends of the press concentrated loads are alternately subjected to a tensile force or a compressive force. 6. Press according to claim 1, characterized in that on one side of the base (12) and above that carried by it Press plate (16) several rollers (68) and means are provided, which the rollers for the purpose of movement Hold it under the press plate (16). 309817/0208 43 ·. Blank page