DE7345015U - DEVICE FOR THE PRODUCTION OF WOODEN SUPPORT FRAME - Google Patents

Description

f June 2, 1977

Automated Building Components, Inc Device for the production of wooden girder frames and the like «

The invention relates to a device for producing Holζträgerrahmen and the like. And relates in particular on a device for the provision of separate connecting or claw plates, the previously punched, have teeth or claws protruding from them in one piece, from rolled up claw plate strips and for practically simultaneous driving of the claw plates into the opposite sides of connecting joints between previously aligned wooden support members for the production of a frame or the like.

It is now common practice to use claw plates with teeth or claws stamped in one piece therefrom for making the connection between the various support members forming a wooden frame. For example, claw plates _t different depending on the structural requirements of the frame sizes and widths

■ ■ ■ · · ·

usually driven into the joints of wooden roof trusses and timber framing. A An example of such claw plates is disclosed in US Pat. No. 2,877,520. To carry out the production mentioned, it is customary in the beam and frame manufacturing industry to use wooden beams that have been cut to size align a template table in the shape of the desired frame and also cut claw plates in places on both sides of the frame joints to arrange. Manufacturers use a variety of methods to drive or press the teeth of the claw plates into either side of the joints to form the finished frame. An example of such a Manufacturing facility is described in U.S. Patent 3,602,237. According to this patent, trimmed Claw plates arranged on a template table on both sides of the joints of the previously aligned wooden beams, whereupon the stencil table is passed through a press position in which the joints get between the plates of the press one after the other and those on the joints provided claw plates are driven into the girders at the joints. According to US Pat. No. 3,603,244, the moves Press along the template table and stop automatically at every joint position to drive in the claw plates

The claw plates are currently offered to frame manufacturers in various sizes, either on cut to the exact required length or cut into separate pieces, the length of which is a multiple of the required lengths. The frame maker cuts then adjust these last-mentioned, longer claw plates to those of the required length.

7345015 24.1177

-3-

plates, which are temporarily used in the following as strip material are very often packaged by the supplier in one of two possible ways. The strip material is either simply put into the packaging Poured in, i.e. the claw plates are randomly arranged in a box or carton, or this material is packed in a tooth-to-tooth position so that two claw plates face each other with their teeth or claws. Obviously, the last-mentioned packaging process requires considerable manual labor, since the individual plates have to be brought into the correct position by hand for this type of packaging. The bulk packaging method also requires some Workload for its implementation and also has the disadvantage of low filling density. Besides, he must When receiving the claw plate packs, frame manufacturers unpack the claw plates and, as mentioned, apply them individually to their intended locations. If the Claw plates are supplied in lengths that are a multiple of the desired length, the manufacturer must of course also cut these longer plates to the desired length before putting them on. the current practice of supplying claw plates to a frame manufacturer and handling these claw plates until it is finally attached to a frame or framework is therefore a considerable amount of work, time and associated costs.

The invention is therefore primarily based on the object of providing a device for handling such claw plates and for producing wooden support frames or To create trusses and the like. With the invention

7345015 24.1177

-4-

a device for the use of rolled up claw plate starting material created by a frame manufacturer, with which the claw plate outer material is cut to the required length practically on the same side to form claw plates, the claw plates are arranged on both sides of the connecting joints of the frame and the claws of the claw plates on the joints are driven into the support members. The following description of the frame making machine relates to an embodiment of the invention particularly suitable for making wooden pallets. It will be seen, however, that the apparatus of the invention can be used in the manufacture of a wide variety of wooden frames and trusses, including, but not limited to, girders or roof trusses, wall panels and truss joists. In a preferred embodiment, the invention generally provides a device for the production of pallets which is able to carry rolls of claw plate starting material with claws punched out of it in one piece, these rollers representing a kind of magazine from which the claw plate material is fed to the device . The device is provided with a feed arrangement which unwinds the rolls and transfers the front sections of the rolls or coils to a cutting press by separate pieces, each feed piece corresponding to the length of a claw plate to be produced. At each cutting press, two individual pieces of the claw plate strip are separated from the Auegangematerial, the claws of the claw plates formed in this way are practically simultaneously driven into the opposite sides of the connecting joint of previously aligned wooden support members forming part of the frame to be produced.

7345015 24.1177

In one waist the pallet maker a conveyor for supporting upper and lower press head assemblies on C-shaped frames on either side of the Promoter. Each press head assembly includes a plate, the upper and lower plates being on opposite sides of the frame members mounted on the conveyor and being movable toward and away from each other. The upper press head assemblies carry stops for aligning the belts in a press fit position. The conveyor carries alignment stops on either side between the cutting press assemblies of the first and second carrier webs in the respective Press-fit positions. Clamping devices carried by the conveyor brace the belts against the ends of the carrier webs. Every Press plate carries a cutting blade that cooperates with a fixed cutting blade to make a specific one Separate piece of a claw plate from the rolled-up starting material that is fed through the feed device for Press head assembly is transferred. The upper and lower press plates take their last part of their movement towards each other with the claw plates to drive them into the connection.

To complete a frame, the belts and webs are generally arranged on the conveyor, with the Belt ends on those of the upper press head assemblies abut carried stops and the first web abuts the stops carried by the conveyor between the cutting press assemblies. Move when pressed the two press plates against each other and thereby separate predetermined lengths of the claw plates from the starting material. The plates take the claw plates with them

7345015 24.1177

with, to ßie during the last part of her stroke Drive into the opposite sides of the joints. During the retraction movement of the press plates the stops for the straps and bars are also withdrawn. In this way, the partially completed consisting of two belts and a first web frame are moved along the conveyor. To be more precise

This three-part pallet is pushed on by a driven roller until the first belt hits stops carried by the conveyor at a distance corresponding to the length of the frame from the press heads, so that the rear ends of the belts in the direction of movement get between the press plates. The second web is moved with the three-part frame forward until he & n the aligned to the press heads web abuts stops, whereby the second web between the rear ends of the frame is oriented in a press-in position. When the partially completed frame is advanced after the first cutting and pressing operation, the advancing device delivers the claw plate stock material to the press head assemblies so that predetermined longitudinal sections of this material are aligned between the press plates. Once the rear web and straps have been aligned between the press head assemblies, the press plates are again actuated to sever the claw plates from the stock and press their claws on either side of the conveyor into the opposite sides of the joint between the support members.

A special feature of the device according to the invention consists in the arrangement of comb-like guides or

• C CCIC

Teeth on the fixed cutting blades and the feed mechanism, whereby the device is practically blocking-proof. The claws or teeth of the claw plate starting material engage in the grooves defined between the prongs, while on those of the Teeth facing away from the sides of the starting material provided guide surfaces the material between them and the Hold the edges of the tines. In this way, only a longitudinal feed movement of the starting material is permitted, while it is held against transverse movement by the prongs and against movement by the guide surfaces in which the claws can be pulled out of the spaces between the prongs. Another one The feature of the device according to the invention is that the feed device does not only cut through the claw plates guaranteed to the desired predetermined length, but also at a longitudinal position between their claws. From US-PS 2,877,520 it is apparent that the claw plates are provided with teeth or claws which both are arranged in longitudinal and transverse rows. Here it is essential that a row of Krallenguer not on the Interface between the fixed and movable cutting blades is placed so that the teeth themselves not sheared off or weakened by the shearing process · Obviously, the claw plates have in Longitudinal direction no identical distance from tooth to tooth. More precisely, one consists of a claw plate or a Starting material of this kind has its own characteristic in that the claws are proportional to the length of the starting material produced are removed from their theoretical longitudinal positions by progressively greater distances. The cumulative variance the longitudinal position of the cuer rows of the claws would therefore

7345015 24.1177

lead to the fact that such a row of claws eventually get between the fixed and movable cutting blades could. Dei the device according to the invention, however, the claw plate strip is always in such a position severed so that the cutting blades shear off the claw plate itself without touching a claw come · For this purpose, a guide or control pin is placed between two transverse rows before each feed process inserted by claws to align the starting material in the longitudinal direction relative to the cutting blades and ensure that the claws do not come into register with the cutting blades. The slight positional deviation of the claws relative to each other over the short one Plate piece between the pen and the cutting blades is insignificant, and the cut becomes practical that way carried out in the middle between two adjacent transverse rows of claws. The claws located on both sides of the cutting line thus remain both flat formed claw plate as well as intact in the next claw plate to be formed.

Another essential feature of the invention is the arrangement of a fixed cutting blade with a comb-like surface, i.e. with prongs. The claws of the claw plate starting material engage between these prongs or teeth, the ends of which the plate during support the shearing process. The prongs or teeth thus form the abutment for the cutting process.

Another advantage of the invention can be seen in the precise alignment of the claw plate in the butt joint "Naturally, when separating from the starting material, the claw plate tries to get rid of

7345015 24.1177

to bend the movable cutting plate or cutting blade away and then to jump away from this cutting plate and from the starting material when it has been completely severed from the latter. To prevent this tendency, According to the invention, a device is provided for holding the plate in place when it has been separated from the starting material. Said device consists of a dovetail-shaped recess or groove on the movable cutting blade and a corresponding dovetail-shaped projection on the fixed cutting blade. When a claw plate is cut from the starting material, it will be at its rear edge in the direction of movement a dovetail recess formed while a dovetail-shaped projection remains on the leading edge of the starting material. The recess of the The cut-off claw plate engages with the dovetail-shaped projection of the fixed cutting blade, whereby the claw plate is held against transverse and longitudinal displacement relative to the device. This means, that the claw plate through the dovetail-shaped Formations held up to a point in time immediately before driving the claws into the joint · In order to prevent the front end of the claw plate from bending away from the movable cutting blade when it is cut off, a magnet is provided on the latter, which the Holding claw plate against him. In addition, spring-loaded plungers or Federklammerri be provided, which take over the transverse support for the claw plate. These alignment means ensure that each claw plate after separation of The starting material is transferred to the joint and is precisely aligned relative to this.

In the device according to the invention are thus the

7345015 24.1177

Claw plates, which have claws punched out of them in one piece, rolled up practically at the same time Cut off the claw plate strips and insert their claws into the connecting joint of a wooden support frame driven in.

In the following, a preferred embodiment of the invention is explained in more detail with reference to the accompanying drawing. Show it:

Fig. 1 is a plan view of a claw plate driving press as a wood frame manufacturing device according to the Invention,

FIGS. 2 and 3 show an end view and a side view of the device according to FIG. 1,

4 shows a section, on an enlarged scale, through a feed and press arrangement which has a Forms part of the device according to FIG. 1,

FIG. 5 shows a plan view, on an enlarged scale, of the device according to FIG. 4,

, 6, 7 and 8 in enlarged scale! Dell sections along lines 6-6, 7-7 or «8-8 in Flg. 4,

Pig · 9 is a cross-section on an enlarged scale to illustrate the species and catfish on which the claw plate starting material is used for manufacture is severed with a claw plate,

9a shows a part of the son shown on an enlarged scale along the line 9a-9a in Fig. 4,

9b shows a plan view of a part divided by means of a claw plate Butt joint,

Fig. 10 is a circuit diagram of a pneumatic circuit for use in the device according to the invention,

11 is a circuit diagram of a hydraulic circuit for use in the device according to the invention,

Fig. 12 is a circuit diagram of an electric circuit for use in the device according to the invention,

13 is a front view of a roll or spool for receiving the claw plate starting material,

14 shows a side view of the coil according to FIGS. 13 and

15 shows a schematic representation to illustrate the type of production of a pallet using the device according to the invention.

The shown in Figs. 1 to 3, generally designated 10 designated device according to the invention for the production of Holzträ-

7345015 24.1177

• ti «· (··

gerrahmen u. the like «essentially has a conveyor 12, two in its two rarely arranged press assemblies 14 and an anti-live roller assembly 16 for moving partially finished latent frames along conveyor 12. With the exception of the various components of the drive roller arrangement 16, the manufacturing device according to the invention is on both sides of the conveyor center line symmetrically constructed, so that a description of the various arrangements on one side of the conveyor center line also applies to the similar arrangements on the other side of this center line apply.

The conveyor 12 has two tison and roller conveyor sections 18 and 20, respectively, on either side of fretting arrangements 14, the respective sections 18 and 20, as mentioned, being arranged symmetrically on either side of the center line of the conveyor. The tissue sections 18 are located on the wood beam input device of the press assemblies 14 and each have an elongated base 22 with vertical supports 24 and one provided at both ends thereof table 26 carried by the latter. Between the supports 24 and the table 26 diagonal struts 27 are provided. Along the outer edges of each table 18, two bar guide brackets 28 are mounted, the vertical legs 29 of which point inwardly towards the center line of the conveyor. The guide brackets 28 are attached to the tables 18 with the aid of releasable clamping pieces 30, so that the guide brackets 28 in Can be adjusted transversely to the distance between their legs opposite each other in the transverse direction according to the width of the wooden support frame to be produced to be able to vary. At the ends of the tables 18 next to the eating arrangements 14 pneumatically operated bar clamping and clamping devices 32 are mounted, each of which consists of a There are air-pressure actuated cylinders 34 resettable by spring pressure and a clamping head 36 · The clamping devices

• ί O .'Κ *

are arranged on tables 18 adjustable on similar catfish, ao that they are adjusted in the transverse direction and thus the Width of the frame to be produced can be adjusted.

Each roller conveyor attachment 20 on the exit side of the pre-assembly 14 has two vertical supports 38 at the opposite ends, which at their upper ends support rails 40 which are spaced apart from one another in the transverse direction. Between the soles 40 there are stored pods 42 distributed at longitudinal distances. Two plates 44 and 44 are located above each roller conveyor section 20 at points distributed at longitudinal intervals 46, each of which carries an adjustable beam guide angle 28 * that corresponds to the guide angles 28 correspond. In addition, the plates 44 directly adjacent to the press assemblies 14 carry beam clamping devices 32% which correspond to the previously described beam clamping devices 32 in FIG same in every way.

The drive roller assembly 16 has a transverse shaft 50, which extends over the conveyor sections 20 and carries two buffer rollers 52, which with the tops a beam or wooden girders carried by the conveyor sections 20 can be brought into contact. The two ends of the Shafts 50 are supported in suitable bearings 53 which are carried by pressure arms 56 arranged on the outer sides of the conveyor sections 20. The other end of each pressure arm 56 is pivotably mounted on a bracket 58 mounted on the conveyor section 20. On the other side of the conveyor is a sweiter pressure arm 60 is pivotably mounted in a holder 62 which is also mounted on the roller conveyor section 20, so that it is pivotable about the same axis as the pressure arm 56. The pressure arm 60 carries a hydraulic motor 64, whose The output shaft is coupled to the shaft 50 via a splined, flexible coupling. Between each conveyor section and the pressure arm carried by it is fitted with a spring 68

7345015 24.1177

_{t (} · «« · "· nil

In this way, the balls 52 are preloaded in a downward direction so that they can rest against a beam or wooden support arranged on the roller conveyor 20.

As mentioned, the press assemblies 14 are each two the table and roller conveyors aligned in longitudinal direction ^ cuts 18 and 20, respectively. The press arrangement 14 consists essentially of an O-frame 70, the upper and lower press plates 72 and 74, respectively, obore and lower supports 76 and 78 for the rolls or bobbins, welohe the rolled up, elongated sheet metal claw plate strips (in the following sometimes also referred to as starting material S) carry a feed arrangement generally designated 80 (Pig x 4) and a stock cutting assembly 82 (Hg x 4). The O-frames 70 are towards each other and mounted movably away from each other, so that with the help of the device according to the invention wooden support frames of different Nominal widths can be produced. More specifically, the C-frames 70 are each on one indicated generally at 82A Mounted support arrangement, which consists of a transverse, rectangular cross-section having supporting tube 84, that at its two ends on its top plates. 86 wears. The tube 84 is supported by a base made of inclined upwardly extending stubs 92 is made. Any C-frame 70 has two C-frame plates that are spaced apart from one another η 88, the lower ends of which carry clamping pieces 90, which releasable the arrangement around the opposite edges of the support plates 86 · The C-frames 70 are thus arranged so that they can be adjusted towards and away from one another.

For reasons to be explained in more detail, the tube 84 carries a central support arrangement 96. This central support arrangement has more precisely, one in the transverse direction between the C-frames

7345015 24.1177

70 at a height which corresponds to the height of the conveyor sections 18 and 20, arranged table 98. The table 98 is supported by vertical members or Stützejn 100, whose lower ends are attached to tube 84. The table 98 carries on both sides for reasons to be described in more detail Bar stop arrangement actuated by compressed air cylinders « openings 102 with elevating shafts 103. The conveyor sections 20 also carry pneumatic cylinders along their inside Bar stop arrangements 105 with elevating shafts 107 *

The coil carriers each consist of two arms 103 arranged at a distance from one another in the transverse direction, which on one End attached to the outer edges of the C-frame plates 88 and are provided at their other ends with slots 104 for receiving outwardly protruding pins or pegs 106, which are carried by spool shafts 108. The reels themselves each have a hub 109 and side plates 110, the Hub 109 is larger in diameter than axles 108. In this way, the spool is with its center of gravity in the downward direction arranged offset under the axis of rotation, whereby a pendulum effect is ensured that any tendency of the Starting material, if its free end is fixed, prevents the spool from twisting and unwinding.

According to Pig, 4, the rolled-up claw plate output material S is fed by the feed arrangement 80 from the upper and lower reels in the direction of the press plates 72 and 74. The feed arrangement 80 is carried by a guide plate 118 which is fastened directly to the C-frame plates 88 with the aid of screw screws (not shown). In addition, the advancement assembly 80 is supported by slide bars 114 disposed on the outside of the plates 88. The slide rods 114 extend from both sides of the guide

7345015 11/24/77

plate 118 through bearings 119 on the outside of the C-frame plates 88. The feed assembly 80 can thus be unscrewed from the C-frame plates 88 and withdrawn along the bearings 119, while still being supported by the slide rods 114 so that complete removal of the feed assembly from the press assembly, for _o example, for allowing access to its various Sauteilen is not required * As is evident from Pig x 5 best, the guide plate 118 along its upper and lower sides with slots or recesses for receiving the flanges of upper and lower, U-profile-shaped material guide tables 120 and 122, respectively. The guide tables 120 and 122 extend in the direction of the circumference of the upper or "lower raw material reels" and encompass a material feed cylinder 124 on the upper and lower sides, which is screwed into the guide plate 118 at its front end. The piston rod 126 of the feed cylinder 124 is connected at its front end to a stock clamp and feed arrangement indicated generally at 128. According to FIG. 4, two holders 130 are arranged on opposite sides of the guide tables 120 and 122 and are provided with slots at 132 at their two ends. Between the two ends of the mountings 130, upper and lower inlet guide rollers 134 and 136 are arranged, with the rollers 134 and 136 carrying the pins / being inserted into the slots 132. Springs 140 are suspended between the pins 138 so that the rollers 134 and 136 are biased towards their respective guide tables to hold the stock material between the rollers and the guide tables.

According to FIG. 6, guide plates 142 and 144 are U-shaped guide plates Connected to the top and bottom of the guide plate 118 in such a way that they have upper and lower passages 146 and 148, respectively for receiving the starting material on its path to the press plates each of these guide plates 142 and 144

7345015 24.1177

is penetrated on one side by a bore 150 through which a control pin 152 is inserted »the outer end each control pin B 152 is supported by a cylinder plate 154 carried, which in turn is mounted on the piston rod of a control cylinder 156. The latter is at the relevant Material guide attached by means of cylinder brackets 158. It can therefore be seen by extending and retracting the piston in the control cylinder 156, the control pins 152 are withdrawn or for reasons to be explained in more detail in FIG the respective guide passages 146 and 148 advanced.

Referring to Figures 4 and 7, the advancement clamp assembly 128 includes a slide block 160 that rests on two slide bars 162 between the positions shown in solid lines and in dash-dotted lines in FIG. 4 is displaceable. The slide bars 162 are attached at one end to the guide plate 118. The slide block 160 is longitudinal at 164 and 166 its upper or lower side with Ausnehm Jungeη provided, where within the respective recesses 164 and 166, upper and lower jaws 168 and 170, respectively, on opposing soaps of the sliding block 160 are attached to it · The top the jaw 168 and the underside of the jaw 170 are provided with longitudinal grooves which are spaced apart in the transverse direction Form standing prongs or teeth 172 or # 174. More precisely, this configuration forms a longitudinal, comb-like one Area which, during the feed movement of the claw plate starting material towards the milling plates, its claws records. In this way, the starting material is always held in a predetermined position in the transverse direction. To both Mounted on sides of the slide block 160 are upper and lower cylinder mounts 176 and 178, respectively, each with a counterbore is provided, into which the ends of the upper and lower clamping cylinders 180 and 182 are screwed. The cylinders 180 and 182 have attached to the ends of their piston rods

7345015 24.1177

Gripping pieces 184 and 186 on · Probably the Extending the gripping pieces in the direction of the opposite jaw the claw plate starting material between the Jaws and the gripping pieces clamped. As best from Jig. 4, the entry ends of the jaws 168 and 170 are provided to facilitate entry of the stock material through the Small assembly 128 expanded "The front end of the sliding block 160 carries an alignment block 184 that is attached to its front end is stepped for alignment between spaced, upper and lower cutting blade support blocks 186 or «, 188, which form part of the press rope assembly.

According to ilg _e 4 and 8 which are arranged between the C-frame plates 88 support blocks carry 186 and 188, an upper and a lower plate 190 or _# 192, at which, in turn, the fixed upper and lower cutting blades 194 or 'are fixed 196 "The plates 190 and 192 are appropriately attached to and spaced from either side of the bottom and top of the upper and lower support blocks 186 and 188, respectively, so as to define upper and lower material passages 198 and 200, respectively. The plates 190 and 192 and the support blocks 186 and 188 are widened at the inlet openings to the passages 198 and 200 in order to facilitate the entry of the starting material. The son's envy blades 194 and 196 are each provided with a number of prongs or teeth 201 distributed at transverse distances, which define grooves 202 between them for receiving the claws of the starting material. More specifically, the cutting blade 194 has upwardly facing teeth or teeth for receiving the downwardly facing claws of the output material which passes through the passage 198, while the plate portion of this output material is between the edges of the teeth or teeth 201 and the underside of the support block 186 runs through it. Similarly, the prongs or teeth 201 of the fixed lower cutting blade 196 are directed downward so that the grooves formed between them

7345015 11/24/77

The close-up waving claws of the outgoing material passing between the plate 192 and the drag look 188 through the Durohgang 200 pick up, while the plate section of the claw plate starting material is picked up in the space between the edges of the teeth or prongs 201 and the top of the drag block 188 wlrd ₀ The front edges of the teeth or prongs 201 of each of the fixed lower and upper sonic blades 194 and 196 form sonic edges, so that the press plates can be used to separate the upper and lower claw plates from the starting material in a manner to be explained In other words, the edges of the comb-like prongs or teeth 201 on the stationary cutting blades form stationary abutments which cooperate with movable sonic blades, by means of which the claw plates are separated from the starting material S.

According to the Pig. 5 and 8 are carried by the upper drag block 186 each Press assembly a compressed air operated belt stop cylinder 197, the piston rod 199 in the between upper and Lower plate 190 or 192 defined space from "" can be moved and withdrawn from it, so that the piston rod 199 in the extended position serves as a stop for aligning each strap of the frame. In this context it should be noted that the piston rods 199 and 103 of the belt or «web stop arrangements are opposite one another in the transverse direction.

Between the C-frame plate η 88 extend upper and lower press cylinder plates 210 and 212, which each carry an upper and lower press cylinder 214 and 216, respectively. the Cylinders 214 and 216 are screwed into the plates that support them, and their piston rods support the upper and lower ones, respectively Press plates 72 and 74, respectively. On the press plates 72 and 74, cutting blades 218 and 220, respectively, are provided which are connected to the fixed upper and lower cutting blades 194 and 196 cooperate, in order to produce the claw plate tires S on the

- 20 -

lit · · · ·

to cut the frame to the desired length. In return, the pistons of the Eressenayllnder 214 and 216 the face plates 72 and 74, respectively displaced against each other, the ends of the starting material duroh the movable and the fixed sonsid blades are separated and the separated claw plates are taken away from the press plates so that their claws on nooh EU descriptive catfish in the opposite rare the two frame pieces located on the Preesenkopf are driven in "

To maintain an exact plate alignment When the claw plates are separated from the strips, the tail blades 21 'and 220 of the upper and lower press plates each have a swallow-tail-shaped tube 211 in a central position along their cutting edge and rear side, i.e. along the face opposite the respective fixed cutting blade 194 or 196. The stationary son's oath blades 194 and 196 each have an outwardly directed, tail-shaped attachment or a tongue 213 longitudinally their son rear edge and front, which coincides with the relevant dovetail groove 211. If thus move the press plates against each other., act with « towards the grooves 211 and the tongues 213 together in such a way that they form a dovetail-shaped groove or recess 217 (? ig · 9b) along the rear edge of the claw plate P to be separated from the starting material, wherein a dovetail projection 219 remains at the leading edge of the starting material. In the further rela-. The claw plate through the engagement of its dovetail-shaped groove with the Correspondingly shaped tongue 213 on the fixed cutting blade is prevented from moving. A magnet 223 is provided in the upper press plate, which is just right cut claw plate on a bending away from the press

I · «<·· Mil Μ · Ι

IJ! t · · ·

plate prevents » The tongues 21? are each arranged at a distance from the inner surface of the relevant plate 190 or 192.The claw plate is therefore held in place by the whale-tailed projection 213 until it is completely severed and until a point immediately before its claws initially penetrate the butt joint. The claw plate is held by the magnet 223 during the entire process of oathing and driving. This ensures that the claw plate does not move out of its intended position in the butt joint after it has been cut off and before it is fully driven in. ,

Pig 10 is a schematic representation of a pneumatic or Compressed air circuit for the feed, stop and clamping arrangements the bar stops and clamping pieces on both sides of the conveyor center line are identical. The pneumatic circuits for each press arrangement together with their associated Klenmstükken and stops are shown within the dashed lines. In the embodiment shown, a compressed air source 253 is provided, which is connected in parallel via a line 255 to four valves 254L, 256, 258, 254E and 300 which are five-port, solenoid-operated, spring-loaded, four-way, two-position valves. To simplify the description, the pneumatic circuit elements arranged on the left and on the right side, which correspond to the left and right press arrangements together with their associated clamping pieces and stops, are denoted by reference numerals to which the letters L and R are appended. The valves 25 ² HL and 254R are used for compressed air

7345015 24.1177

feed to the left or right control, material clamping and feed cylinders 156, 183, 182 and 124 on either side the VoxTiohtung. The valve 256 supplies pressurized air to the Bridge soles 102 and 105. Valve 258 supplies the belt soles 197 with compressed air, while the valve 300 supplies the beam clamping cylinder 34 with compressed air. In the case of the In the embodiment, valves 254L and 254R are spring-loaded into the position shown in FIG which the control cylinders 156 via lines 259 »260, 262 and 264 compressed air is supplied to this cylinder in the retracted state to hold in which the control pins engage between the claws of the starting material. Lines 260 and 274 lead, for a reason to be explained, via a four-way two-position valve that can be reset by solenoid actuation 265. Valves 254L and 254R also communicate via lines 266, 268, 270, and 272 with the tensioning devices 180 and 182 to keep the latter in the retracted position. In addition, the feed cylinder 124 is controlled via a flow control valve 271 and time delay valve 273 charged with compressed air and held in this Weias in the retracted position. Probably The opposite sides of the various cylinders are connected via lines, dia below to be explained with the actuation of the various cylinders, vented to a compressed air tank.

When the material advance solenoids 326L and 326R associated with valves 254L and 254R are energized, these valves are adjusted to deliver compressed air through lines 275, 274, 276 and 278! Teeth of the starting material are withdrawn. Compressed air is also supplied to the upper and lower tension cylinders 180 and 182, respectively, via lines 280 ₉ 282 and 284 to extend the grippers 176 and 178, causing the upper and lower ones, respectively

7345015 24.1177

Starting material strips are clamped between the grippers and the jaws 168 and 170, respectively. There is also a Line 280, a flow control valve 286 and a time delay valve 288 of the feed cylinder 124 with compressed air charged so that it extends its piston and thereby the clamping or clamping arrangement 128 and the thereby clamped Feeds feedstock. The other sides of the various control ^ clamping and feed cylinders communicate via the described lines 268, 270, 266, 262, 264, 260 and 259 with a reservoir when the solenoids 326 energized are.

In the rest position, the valve 256 delivers via lines 290 and 292 pressurized air to the web stops 102 and 105, thereby holding these stops in their extended position will. When the web stop magnet coil 353 is excited, the valve 256 moves and supplies compressed air Lines 294 and 295 to the opposite sides of the stop cylinders 102 and 105, whereby the stops 103 and 107 to be withdrawn. The valve 258 is shown in a position in which it is via lines 296 and 297 Compressed air to the belt stop cylinders 197 supplies. When the seat belt stop solenoid 354 associated with valve 258 energizes is, valve 258 toggles so that pressurized air through lines 298 and 299 to opposite ends of the cylinders 197 is directed and thereby the stops 199 are withdrawn.

A valve 300 is connected to the compressed air supply via a line 301 tied together. In the position shown, the valve 300 supplies pressurized air to but closed drain ports are. The cylinders 34, 34 * are spring loaded so that they hold their clamping heads in the retracted position. When the solenoid associated with valve 300 is excited

7345015 24.1177

311 the valve is switched over so that it is via a line 302 supplies compressed air to each set of cylinders 34 and 34 * to keep their clamping heads 36, 36 'against the side straps extend and press the latter against the ends of the webs. After the magnetic coil 311 has fallen off, the spring is set Return the valve to the position shown, in which the compressed air is directed to the closed drainage openings will. The clamping heads then return to their retracted position under the action of fire.

Pig "Figure 11 illustrates a hydraulic circuit for the press cylinder 214 and 216 eating arrangements at both P _r. A pump 230 with adjustable delivery rate supplies hydraulic fluid / a reservoir 232 via a line 235 and via a directional control valve 236 to one side of the press cylinders 214 and 216, whereby the press plates are held in the retracted position. The line 234 in particular is connected to a line 238 which is connected via lines 240 and 242 in parallel to the press cylinders on both sides of the device. The opposite sides of the press cylinders are connected to a flow divider 244 via lines 241, 243 through overpressure valves in each of these lines 241 and 243. A line 246 establishes a connection between the flow divider 242 and a storage container 232 via a valve 236. A pressure-operated switch 314 communicates with the line 246. The motor 64 is switched on via a line 248 between the storage container 232 and the motor 230, the hydraulic motor 64 running continuously and stopping or being stalled when the belts hit the web stops 107 . In operation, hydraulic fluid is supplied via motor 230 and lines 238, 240 and 242 to the upper and lower press cylinders 214 and 216, respectively. When a solenoid 310 assigned to the valve 236 is actuated, this valve is switched over so that it transfers the pressure fluid to the flow divider 244 and over

7345015 24.1177

Lines 243 and 241 to press cylinders 214 and 216 supplies to extend the press plates carried by them. The flow divider 244 is used to balance the Pressure of the hydraulic fluid supplied to the press cylinders in order to ensure a uniform pressing effect «, The return flow of the hydraulic fluid from the two sides of the cylinders 214 and 216 to the reservoir 232 takes place via Lines 240, 242, 238 and 246. After the press-in process is complete the solenoid 310 drops out, whereupon the valve 236 is returned to the position shown under the action of a pedal will. The hydraulic fluid now again flows via lines 238, 240 and 242 to the press cylinders 214 and 216, whereby the press platens are retracted and held in the retracted position,

Pig _e 12 is a circuit diagram of an electrical control circuit for the device according to the invention, in which the circuit is divided into various parts by the dashed lines, which indicate the punctures of the various circuit sections. The circuit is shown in its state with open contacts, with the various relays indicated by circles opening and closing the associated contacts in a manner to be explained, and with working and break contacts being shown by two parallel lines and two crossed parallel lines, but with Exception where this information is replaced by a switch «The reference numbers of the contacts are provided with appended digits corresponding to the reference numbers of the assigned actuating relays, with the second appendix number indicating a specific contact. As mentioned, the electrical circuit in Pig · 12 is divided into different sections by the dashed lines according to the punctures made through its components. The circuit components in the section labeled 304 control the press operation, including the beam clamps, the components inside

7345015 24.11.77

half of the section 305 control the feed of the starting material for press arrangement together with the feed clamps or, tensioning devices for this, while the components within the dashed line 306 are the belt and web stops steer.

_{A current of, for example,} 117 V and 60 Hz is supplied via lines 307 and 309 by a current source P, which also supplies the current for the hydraulic motors 64 and 230. A switch-on lamp 502 is switched over the power source by means of a line 311, which indicates that the device is being charged with power »A start switch 501 is provided in line 309» A load magnet coil 361 and a fuse 312 are in series with the power source via a line 313 and normally open contacts 315, which form part of a load switch 359. A press magnet coil 310 and a fuse 317 are connected in series via a line 315, the line 315 switching these components via the operating contacts 319 which form a further part of the circuit breaker 359 via the power source. A normally open contact K1-1 in a feed line 321, as well as a tensioning magnet coil 311 and a fuse 323, which are connected in series by a line 325, are connected in parallel with the press magnet coil 310. Also connected in series with the power source are the normally closed contacts 314a of a press-in pressure switch 314 *, a normally open contact K1-3 and a relay K1 in lines 326 and 327, the line 321 being connected to the line 327 between the relay K1 and the contact K1-3. A reset switch 329 is arranged between a line 341 and the load switch 359. A belt feeler switch 250 and make contacts K2-3 are connected in parallel to the power source via lines 331 and 333, while a fuse 335 and the belt stop solenoid 354 in line 333 are connected in series. In addition, a line 337

7345015 24.1177

the normally open contact 314b of the press-in pressure holder 314, a fuse 339 and a web solenoid 353 to the power source in series with each other. The line 341 thus contains the relay K2, the arbelt contacts K2-1 and a normally closed bar limit switch 338 via the power source. A line 342 is between the working contacts 314b and a fuse with the line 337 and between the relay K2 and the contact K2-1 with the Line 341 connected. A normally open press-fit switch 318 is located in line 321, while a press-fit activation lamp 503 is connected via a line 347 between lines 321 and 309. In series connection with the power source, the work contacts 322a and 322a of the right and left press plate limit switch 322, a work contact K3-3, a fuse 349 and the left and right material feed solenoid coil 326L and 326R are connected via a line 351 are connected in parallel to each other. A line 355 is connected to line 351 between contact K3-3 and the press platen limit switch 322, and this line 355 is also connected to line 321 between the press-fit switch 318 and lamp 503. A line 357 switches a relay K3 and the working contacts 322b and 322b ^{1 of} the press platen limit switch via the power source, the contacts 322a and 322a 'being mechanically connected to contacts 322b and 322b ¹ , respectively Normally open contact K3-1 and a feed limit switch which has a set of normally closed contacts connected in parallel «

The switch-on lamp 502 indicates that the circuit is energized stands. In operation, the start switch 501 is closed to

7345615 24.1177

* 28 m

- W · "· ι · ι

the line ^ JO? and 309 to be connected to voltage · In this idle state of the so holding, in which current is applied to the lines 307 and 309, the relays Kl, K2 and K3 »the load magnet coil 361» the press magnet coil 310, the tensioning magnet coil 311 »the belt - and web base solenoid coils 354 or 333 as well as the left and right starting material feed solenoid coils de-energized. The press-in four-way lamp 503 is brightened by the current supplied via the line 351 »355» 347. To operate the press-in lock, the press-in lock 318 is pressed briefly, causing the relay K1 to be energized via the lines 331 »355» 321 and 327 is placed. The picking up relay K1 closes the work contact K1-3, causing a holding circuit for the relay K1 via lines 326, and the break contact 314a 310 is energized via lines 321 and 315 and the tension solenoid 311 via lines 321 and 327. After completion of the press-in process, the pressure-actuated Sohalter 314 opens the normally closed contact 314a to de-energize the holding circuit for the relay K1, and the relay K1 sets the contacts K1-1 and K1-3 back to their normally open position * ¹ when they drop. By opening the contact K1-3, the press and tensioning magnet coils 310 and 311 are de-energized, whereupon the press plates return to their normal positions and the frame is released in a manner that cannot be described.

When the hydraulic pressure builds up in the press cylinders, the normally open or working contacts close 314b of the press-in pressure switch 314, whereby the relay K2 is energized via the lines 343 and 341 and the web stop solenoid 353 via the line 337 Relay K2 closes its normally open contacts K2-3 and K2-1. The closed contact K2-1 closes a hold circuit for

·· 29 * ■

the relay K2 via the normally closed web limit holder 338 and the line 341. The closed contact K2-3, on the other hand, applies tension to the belt solenoid coil 354. As a result of the excitation of the belt and web sole magnet coils 354 or 353, all stops are thus withdrawn. When a partially completed frame is pushed forward through the device in a manner that will not be explained in more detail, the limit stop 338 is opened to release the relay K2, which in turn contacts the contacts K2-1 and K2-3 returns to the normally open positions and doing the solenoids 353 and 354 de-energizes so that the stops can extend. However, if through the belt feeler 350 a belt of the partially completed frame is detected, the Sohalter 350 closes and holds the (Yurt stop solenoid 354 via lines 331 and 333 tension, which holds the belt stop in the retracted position.

As mentioned, when the milling plates moved against each other, the pressing plate working contacts 322b and 322b ^{1 were closed} with the excitation of the relay K3, which in turn closes the working contacts K3-1 and K3-3 and opens the normally closed contact K3-2. By opening the normally closed contact K3-2, the press-fit activation lamp 503 and the press-fit activation circuit are switched off. When the normally open contact K3-1 is closed, a hold circuit for the relay K3 is established via the lines 359 and 357 and the normally closed feed limit switch 320. However, the closing of the contact K3-3 does not switch the circuit to the material feed solenoid coils 326R and 326L is closed as the press platen limit switch contacts 322a and 322a ^{1 will} remain open until the press platens have returned to their retracted position. Upon this return movement, contacts 322a and 322a ¹ return to their normally closed positions, thereby releasing the material advance solenoids

326R and 326L are energized via line 351. At the end of the pre-stroke, the normally closed contact 320 of the pre-stroke limit switch opens to drop the relay K3 »The dropping relay K3 puts its contacts K3-1 and K3-3 into the normally open position, which causes the material TOrsohub B solenoids 326R and 326L are de-energized and the normally closed contact K3-3 closes, so that the press-fit activation lamp aufleüohtet and in turn the Einpreß-Aktiviersonaltunig puts on tension

In Pig. 13 shows an empty reel or spool which the claw plate starting material are rolled up can. Each spool consists of a hub 109 and two spaced apart side plates 110, including the Grasp the source material. A removable pin 400 extends sioh transversely between the side plates 110 at a location close to the hub 109. The pre-cut claw plate starting material can * be transferred directly from the punching machine to the reel and rolled onto it by the spool at one of the feed speed of the input material adjusted by the punching machine speed is set in rotation, wherein the drive device for rotating the coil is not shown. More precisely, the claw plate starting material is hung between the hub 109 and the pin 400 in such a way that the claws 402 of the starting material point radially outwards and engage the pin when the spool is rotated, so that the claw plate starting material is wound around the bobbin. After the coil has been fully wound with the starting material this separated and set for shipping and / or use in the inventive device. After this Placing the spool on the inventive device, the pin 400 is removed, so that all of the starting material can be unwound from the roll and transferred to the device.

7Ϊ45015

As an example only, it can be stated that a 38 mm wide, 1.0 mm thick claw plate starting material in a length of about 46 m and a weight of about 13.6 kg can be rolled up, so that the rolls of this starting material can be inserted into the device by hand.

The following is the operation of the device according to the invention explained.

To start up the device, the start switch 501 is closed, which causes dxo in Pig «12 in the dashed line Boxes 304, 305 and 306 contained electrical Circuits are energized with lamp 502 indicating that the device is receiving power. if If these circuits are activated, the device is brought into an idle state in which the starting material feed cylinder 124 is retracted, the control cylinders 156 with control pins located in the passages 146 and 148 are retracted, the upper and lower clamping cylinders 20 and 182 are retracted and the press-fit activation lamp lights up. In this idle state, the relays K1, K2 and K3 are de-energized and the normally open contact K3-3 holds the material feed solenoid coils 326L and 326R in the de-energized state and their associated valves 254L and 254R in position according to Pig ", 10. The hydraulic valve 236 is located in Pig. 11, and the beam clamps are withdrawn because the normally open contact K1-1 and the press-fit switch 318 prevent the magnet coil 311 from being excited. The web stop solenoid 353 is kept currentless by the open make contacts K2-1 and 314b, and the valve 256 supplies the web stop cylinders 102 and 105 with compressed air, whereby the stops 103 and 107 in their movement path of the webs are held in the advanced position.

7345015 24.1177

However, if there is no wooden beam or beam on the device is placed, the Fühlsohalter 350 represents the lack of one The web carrier is fixed on the conveyor section 18 and thus remains open, whereby the web stop solenoid 354 is de-energized remains and the web stops 199 remain advanced. "The device is now ready for loading.

The axles 108 are now inserted into the reel hubs 10 9 and those with the rolled-up claw plate starting material wound bobbins are placed on the upper and lower support brackets 76 and 78 on either side of the device, so that the pins 106 engage the slots 104. The coils are now rotatably mounted, but practice one Pendulum effect, which causes the coils to rotate automatically when the starting material is withdrawn to the device hinders. The load switch 359 is then rotated to close the contacts 315, as a result of which the magnetic coil 361 is excited will. As a result, Pig. 10 after shifted to the left so that the cylinder 156 is charged with compressed air to extend the pistons and thereby retract the control pins from passages 146 and 148. When the load switch 359 is rotated, the contacts 319 are also closed, as a result of which the press solenoid 310 is energized will. As a result of the excitation of the solenoid / the presses « plates are moved toward one another to a fully extended position in which they open the ends of passages 198 and 200 To block. In this context it should be noted that the open contacts K1-1 prevent the press-fit switch from allow a return movement of the press plates. Then the rolled up claw plate starting material is from the upper spool between the table 120, the roller 134, through the passage 146 in the guide plate 118, through the comb-like Prongs or teeth 172 of the jaw 168 of the clamping arrangement 128, through the passage 197 in the press head and via the

7345015 2i1t77

ι · t f · ·

Teeth fed to the fixed cutting edge until it hits the press plate 72. Similarly, the rolled stock is fed from the lower spool between lower table 122 and roller 136 via passage 148, teeth 174 of lower jaw 170, passage 200 and teeth of lower fixed cutting blade 196, through to it hits the lower press plate 74 between the ram pins 221. The load switch 359 is then rotated to de-energize the solenoid 361, thereby returning the valve 265 to the position shown in FIG. 10, which has a return movement of the press plates to their retracted positions towards the pole. When the press plates move, contacts 322b and 322b «also close with the excitation of relay K3, which closes its contact K3-3, but does not energize the material feed solenoid because contacts 322a ^{1 are} open. As the press platens move backward, contacts 522a and 322a 'close so that material feed solenoids 326R and 326L are energized via line 351 and closed contact K3-3. When these solenoids are excited, the control cylinders 156 extend their pistons to retract the control pins 152 from the passages 146 and 148, while the cylinders 180 and to clamp the claw plate material are extended and the feed cylinder 124 advances the claw plate material between the press plates by a predetermined distance. Although a maximum feed stroke is carried out in the illustrated feed arrangement, sleeves of a predetermined length can possibly be placed on the slide rods 162, whereby the stroke of the feed arrangement can be limited to a predetermined length as desired. Thus, predetermined pieces of the claw plates can be separated from the starting material introduced into the device in the manner still to be described. At the end of

In the feed stroke, the feed limit switch 320 opens when the relay K3 is de-energized, whereby the contact K3-3 is returned to its normally open position and the feed solenoid coils are de-energized. After the resetting of the valves 254R and 254L under spring force, the control cylinders retract and insert their control pins 152 between the claws of the starting material, while the clamping cylinders retract their piston rods and the feed cylinder also retracts after a certain time delay. In this process, the control pins 152 are inserted between two transverse rows of the claws in order to adjust the longitudinal position of the claw plate material in the press and also to hold this material in place during the shearing process. In addition, the control pins determine the position of the claw plate material in the longitudinal direction in such a way that its claws do not get into alignment with the cutting blades. This prevents the claw plate from being severed along the line of its claws. If such a severing were not prevented, the claws themselves could be sheared off and thus rendered ineffective, since they would buckle when they were driven into the wooden support members _e In addition, the claws would usually not be cut at all because as a result of the provided on the fixed cutting blade Teeth b £, w. There is no counteractive surface or abutment under the claws of the claw plate. However, these teeth are of course required for the guidance of the claw plate material. The control pins thus ensure that the cut is made through the claw plate material at a point between the claws and only through the plate section of the claw plate material, but not at its claws. The device is now ready for the pressing process.

7345015 24.1177

According to EIg. 15 are then two straps that have been cut into real life 0 placed on the Ildohfördererabsohnitte 18. According to Flg « 15a throw these belts in a longitudinal direction along the conveyor section 18 until they butt against the belt soles 199. Two bar links are cut into it W1 and W2 between the belts 0 on the conveyor descendant 18 arranged, wherein the first web \ 71 is pushed forward by hand to rest against the raised web stops 103. The second hour W2 is according to "Pig. 15b" at a distance of about 0.3 mc behind the first web W1. Y / enn the The bars and straps are aligned in the manner shown in Figure 15b, the operator presses the press-fit switch 318 for energizing the relay K1 and the tensioning magnet coil 311 »whereby the normally open contact K1-3 closes a hold circuit for the relay K1 and the solenoid 311 closed and the normally open contact K.1-1 is also closed, so that the press solenoid coil 310 is energized. As a result of the excitement ider ^ Spam-Magnete] ^ 300 shifted, "" so 'that

compressed air is supplied to the clamping cylinders 32 and 32 'and these cylinders extend the clamping heads 36 and / or % ^x carried by them. The latter attack the outer surfaces of the belts and press them against the ends of the web W1. When the press solenoid 310 is energized, the valve 236 for supplying hydraulic fluid to the upper and lower Fressenzylinöar 214 and 216 via the flow divider 244, whereby the press plates 72 and 74 are shifted against each other.

During the movement of the P _r eat plates 72 and 74 against each other through the fixed cutting blades 194 and 196 protruding portions of the claw plate strip are τοη detects the press plates and a shift of the cutting blades 218 and 220 to the cutting blades 194 and 196 by the in FIG. 9 separated from the claw plate material S as claw plates P. A significant feature

7345015 11/24/77

The invention consists in the duroh the prongs or teeth The counteracting force guaranteed by the fixed Sohneldkllngen, due to which the claw plate material on his Interface is held rigidly · The on this catfish separated claw plates F are thrown the press plates 72 and 74 in Riohtung towards each other and with their claws 402 in the top and bottom of the between the belts and the first web, which have previously been aligned by the stops 199 and 103 between the fretting plates 72 and 74, are driven into the connecting joints (cf. Pig 15o). After the complete collection of the Claws build up the hydraulic pressure in the hydraulic circuit and actuates the push button switch 314 to open the contacts 314a. Hereby the hold circuit for relay K1 is separated, whereupon contacts K1-1 and K1-3 return to their normally open position, thereby releasing the press solenoid 302 and make the clamping solenoid 311 de-energized. In doing so, it displaces the valve 236 for supplying hydraulic fluid to the press cylinders 214 and 216, around the press plates 72 and 74 apart and away from the finished joint away · In addition, the compressed air valve 300 is switched to retract the beam clamping pieces 32 and 32 * «

When the pressure switch 314 is actuated, the contacts are also activated 314b closed to energize relay K2 and web stop solenoid 353. The energized relay K2 closes the work contact K2-3, and the relay K2 is kept under voltage by a holding circuit via the contact K2-1. The closed contact K2-3 applies voltage to the seat belt stop solenoid 354. As a result of the excitation of the solenoids 353 and 354 shift the valves 256 or 258, whereby compressed air is fed to the web stop cylinders 102 and 105 and to the belt stop cylinders 197 in order to retract the stops 103, 107 and 199 carried by these.

7345015.2V1t.77

■ μ. j

The partially finished frame (! Ig · 1 ¹ Sd) provided then by hand, the drive roller 16 so lifted, which thereupon the partially completed frame forward pre sohlest · When Vorsohub this framework, the web opens W1 briefly the web-Grenzeohalter 338 for opening of the holding circuit for relay K2, causing contact K2-1 to be returned to its normal open position, which results in the Steganeohl.ag magnet coil 353 falling and the Steganeohl.ag solenoid saws 103 and 107 being extended In the frame, the belts move and, while closing, touch the belt-PUhl switch 350, wherever. a further excitation of the belt stop magnet coil 334 via the line 331 and consequently a further retraction of the attachment piece 199 is brought forward. The partially completed frame is advanced further until the web W1 hits the extended attachment point 107. The extended web stops 103 lock the second web in the position shown in Pig 15d and 15e, whereupon it comes into alignment with the rear ends of the straps

After the press plates 72 and 74 have been withdrawn, the press plate switch 322 resets the contacts 322a and 322a ¹ to their normal closed position and the contacts 322b and 322b ¹ to their normal open position.

From the above description it can be seen that relay K3 was initially not energized. During the initial movement of the press plates against each other, however, the contacts 322b and 322b close under the excitation of the relay K3. The contacts K3-1 keep the relay K3 energized via the normally closed contacts of the feed limit switch 320. The normally closed ones or, normally closed contacts K3-2 open when the relay K3 is energized and disconnect the press-in switch 318 from the nail driving circuit as well as from its power source, whereby the

7345015 24.1177

Driving in the claw plates and switching off the driving act i vie rl ampe 503 is prevented. The normally closed contacts K3-3 close when the relay K3 is energized and establish a current path from the Materlalvorsohub solenoid coils 326K and 3261 to the now open limit switches 322a and 322a ¹ for the retracted press plates blocked, so that the press platen limit switch 322 is in its normal position during the return movement of the press platen, while the feed solenoids 326L and 326R are excited via the contacts 322a and 322a 'and the closed contact K3-3. As a result, when the press plate holder 322 returns to its normal position, the material feed solenoids 326R and 326L are energized so that they switch over the valves 254 for supplying the control cylinders 156 and the upper and lower clamping cylinders 180 and 182 with compressed air. The upper claw plate strip is clamped between the gripper 186 and the jaw 168, while the lower strip is clamped between the gripper 184 and the jaw 170. Obviously, as a result of the prongs or teeth of the jaws 168 and 170, this tensioning or clamping effect is only exerted against the plate surface and not against the claws. In addition, the pistons of the control cylinders are extended in order to pull the control pins 152 out of the area between longitudinally adjacent transverse rows of claws. When the claw plate material is clamped and properly aligned relative to the cutting edges, the feed cylinder 124 extends after a short time delay, the claw plate material being pushed beyond the fixed cutting edges by a distance corresponding to the stroke of the cylinder 124. This distance can be adjusted accordingly by placing one or more sleeves of a certain length on the slide rods 162. After the end of the feed stroke, the feed limit switch is normally closed

320 opened briefly, whereby the relay K3 drops out, the normally closed contact K3-3 opens and the normally open contact K3-2 closes, whereupon the material advance solenoids 326L and 326R de-energize. The driving switch 318 and energize the drive-in activation lamp 503. Here" this activates the drive-in circuit for the subsequent drive-in of claw plates. After falling off of solenoids 326R and 326L, valve 254 reverses under fire action back into its position shown in Figo 10, whereupon the pistons of the control cylinders are retracted to to insert the control pins between the transverse rows of claws of the advanced claw plate. The upper and the lower clamping cylinder are retracted to the claw plate enmate rial release while the feed cylinder moves back to release the claw plate material and thereby the clamping or tensioning arrangement 128 in preparation retracts another feed process into the position shown in dash-dotted lines in FIG. 4.

It goes without saying that the control pins are inserted before the clamping arrangement is retracted. As mentioned, serve the control pins to determine the longitudinal position of the claw plate material required to align the To prevent claws on the cutting edges. When the gills or the clamping arrangement is moved back, the control pins therefore determine the longitudinal position of the claw plate material relative to the cutting blades and also hold it in this position until the control pins have passed the be withdrawn again in the next cut.

Since the partially completed frame is now in a position for attaching the claw plates to the connecting joints is located between the second web W2 and the rear ends of the belts, the drive-in switch is now 318 pressed again, the press heads 72 and 74

7345015 24.1177

practically at the same time separate the claw plates from the strip material and their claws in the opposite sides drive in the connecting joints on both sides of the frame «When the press platens move backwards, the press works again the advancing device for advancing predetermined length sections of the claw plate starting material over the stationary ones Cutting blades out between the press plates while the finished frame drxch the drive roller along the Conveyor is discharged from the device «When the finished frame is discharged, the belt sensor switch 350 opens to switch off the solenoid 354, whereupon the belt stops are extended »The device now stands for the Production of a second frame ready «As mentioned, the stops 103 and 107 are opened by briefly opening the Bar limit switch 338 returned to its extended positions, with bar stop solenoid 353 also being without current is made *

From the foregoing description it is apparent that the above-objectives or tasks called the invention are achieved all, since with the invention, both a novel and unique industrial product in the form of a roll or _o coil with a coiled in this claw plate strip from one side thereof claws punched out of the same material protrude radially outward, as well as a manufacturing device in which the claw plate strip is advanced from the spool to be cut into pieces of the required length to form claw plates, and in which the claw plates thus formed are inserted into the opposite sides of connecting joints between wooden support members are driven. The difficulties prevailing up to now / for the suppliers of the claw plates as well as for the manufacturers of the frames are made possible by the novel method and the novel device according to the invention for the handling of a product of the aforementioned

Type largely reduced or “switched off” For example the supplier of the claw plate starting material needs this when it leaves the cutting and Claw punching machines only wind them up on the bobbins and then send the bobbins or rolls to the frame manufacturer send »This means that the items associated with the packaging of the individual claw plates are connected in the usual way Handling problems eliminated. The frame manufacturer also does not have to handle individual claw plates, as they have been delivered to him by a supplier * This means that the bobbins after receipt from the supplier can easily be stored and placed on the device without a single handling of each one or more claw plates would be required «.

In addition, the manufacturing device according to the invention is on special way of using the rolled up claw plate strip material customized. In this device, the claw plate material is fed from the Coil cut into pieces of the required length, while practically holding the claws of these claw plates are driven into the connecting joints formed between the wooden support members. In addition, this device ensures a largely automated way of working in the manufacture of a frame, since one operator only to bring the corresponding wooden support members into the device and further not to the attachment and Alignment of the various claw plates needs to be taken care of, as was previously required «From the foregoing Description it is also apparent that the device can handle claw plates of different lengths, by simply increasing the stroke of the feed cylinder by placing one or more spacer sleeves on the guide rods is shortened. In addition, the various through

7MJ5015

passages or passages through the device also claw plate strips of different widths, as the claw plate material through the engagement of its claws between the prongs or teeth is guided laterally. The manufacturing device according to the invention is also suitable for the manufacture of a wide variety of wood support frames, panels and the like, including but not limited to only roof trusses, timber framing and side frame panels for timber construction purposes. The inventive The device is not to be lowered to the alignment of the rolled up claw plate material or the claw plates themselves. limited right to the direction of movement of the frame to be produced. More precisely, the device can also be arranged so that the rolled-up claw plate material is parallel is supplied to the direction of movement of the frame to be produced and, for example, for the production of tab connections at elongated !. Frame support members used can be",

ti

Of course, the invention can be practiced in other embodiments without departing from its scope and Basic idea is deviated. For this reason, the embodiment of the invention shown and described above is intended should be considered in all respects only as illustrative and in no way restrictive of the invention.

7345015 24.1177

Claims (1)

e t ft, n a ρ r ü ο h e 1 _# Device for cutting elongated sheet metal claw plate outward or strip material with a large number of claws punched out in one piece for the production of a separate claw plate and for driving the claws of this claw plate into two abutting wooden support members »characterized by a supporting structure, one of which along a predetermined path movably supported press head, a device for moving the milling head along the predetermined path »a rear edge carried by the press head so that it can move with it, a device carried by the support structure for feeding the claw plate material into the path of movement of the press head, one carried by the support structure and interacting with the cutting edge Abutment for severing the claw plate material as the press head moves along said path, thereby forming a claw plate of a predetermined length, and one on the device Device provided for aligning the abutting wooden support members in a position opposite the press head, the press head being able to drive the claws of the claw plate into one side of the abutting wooden support members as it moves along said path. 2, device according to claim 1, characterized in that the abutment has an IHihrungsglied with a number of prongs or teeth, which define a plurality of transversely spaced recesses for receiving and guiding the claws of the claw plate material and the ends of which are on the side of the 7345015 24.1177 Able to create claw plate materials, from welohesi the claws stick out when the press head and the abutment work together to sever the claw plate. 5. Device according to Anspruoh 1, characterized in that the feed device is a guide member with a number of prongs or teeth that have between them several recesses distributed across transverse distances set for receiving and guiding the claws of the claw plate material, and a device for bracing of the claw plate material against the teeth so that their ends are clawed against the Place on the side of the claw plate material «, 4. Apparatus according to claim 1, characterized in that one with the claw plate material engageable means for aligning this material relative to the cutting edge in the manner it is provided that adjacent transverse rows of claws are on both sides of the cutting edge when the Material is severed so that the claw plate material along one between the two adjacent claw transverse rows lying line is severed. 5. Apparatus according to claim 1, characterized in that the feed device has a Has a passage through which the claw plate material can be advanced into the path of movement of the press head, that the press head along said path in opposite directions between a first position one side of the passage and a second position on the other side thereof is movable and that one on the Movement of the press head from the second to the first position responsive device for actuating the advance » 7345015 241177 thrust device is provided so that this is a predetermined Advance piece of the claw plate material in the path of movement of the press head. 6. Apparatus according to claim 5 »characterized in that one with the claws of the claw plate material engageable means for orienting the claw plate material relative to the Cutting edge is provided in such a way that the one another adjacent claw transverse rows when cutting the claw plate material on opposite sides of the Cutting edge lie so that the claw plate material along one between the two adjacent transverse grooves The line lying lying on the claws is severed, and that the engagement device with the claws between the transverse rows of which have engageable element. 7. The device according to claim 1, characterized in that one of the claw plate material in roll or coil form supporting role or coil as well as a device carried by the supporting structure for Storage of the coil to enable a rotary movement of the same are provided 8. Apparatus according to claim 1, characterized by one carried by the support means for movement along a second predetermined path and the former Press head at a distance from the second press head, a device for moving the second Press head along the predetermined path of movement, one carried by the second press head so that it can move with it Cutting edge, a device provided on the supporting structure for advancing the claw plate material into the path of movement of the second press head and one of 7345015 24.1177 the supporting structure carried by the supporting structure and cooperating with the second rear edge for the Durohtrennen of the claw plate material during the movement of the second press head along the second movement path for the purpose of producing a claw plate of a predetermined length, the second press head as it moves further along the said movement path, the claws of this claw plate in the other side of the abutting one Able to drive wooden support members. 9. Apparatus according to claim 8, characterized in that means for practical simultaneous movement of the two press heads towards each other is provided so that the claw plates practically simultaneously driven into the opposite sides of the abutting wooden support members will. 10. The device according to Anspruoh 9, characterized in that the two feed devices Have means for their practically simultaneous actuation to a predetermined length of the claw plate material to promote in the path of movement of the two press heads. 11. The device according to claim 10, characterized in that the feed device is a RUirungsglied with a number of teeth or prongs that are distributed between them a number of at transverse distances Define recesses for receiving and guiding the claws of the claw plate material, a device for bracing or clamping the claw plate material against the prongs or teeth so that their ends on the Claw-having side of the claw site material attack, and a facility for practically simultaneous Has advancing the guide device and the clamping device to portions of the claw plate material to bring into the respective movement paths of the two press heads. 12 »Device according to claim S - characterized geke η η - ζ ei ch-net, that two rolls or spools, which carry the claw plate material in roll or coil form, and a device carried by the supporting structure for the rotatable mounting of the spools and for supplying the Claw plate material are provided for the relevant press heads. 13. The apparatus according to claim 8, characterized in that the supporting structure is a substantially Has a C-shaped frame, in which the two press heads in an opposite arrangement tion to be borne by the legs of this frame that the support structure has two reels for the supply of rolled Claw plate material carries to the feed devices, the claws of the relevant Coils of withdrawn claw plate material are facing each other, so that the feed units each have a guide ~ member with a number of prongs or teeth, which have a plurality of transversely spaced recesses between them to receive and guide the claws, set the claw plate material, and that a device for Bracing the claw plate material against the prongs or teeth in question, so that their ends on the claws Attack bearing side of the claw plate material, and a device for practically simultaneous advancement the guiding device and the clamping device are provided around certain sections of the claw plate material to bring into the respective movement paths of the two press heads « 7345015 24.1177 14. The device according to claim 1, characterized by a conveyor for receiving two wooden beams along its two sides and an intermediate beam between these, wherein the first-mentioned press head is carried by the support structure for connecting the intermediate beam to the one lateral support member on one side of the conveyor, a second press head supported by the support structure on the opposite side of the conveyor and movable along a predetermined movement path, a device for moving the second press head along said movement path, a cutting edge carried along with it by the second press head, a supply device provided on the support structure of claw plate material in the path of movement of the second press head, an abutment carried by the supporting structure and cooperating with the second cutting edge for cutting through the claw plate material when the second press is displaced head along said path, so that a claw plate of predetermined length is formed, and a device carried by the support structure for aligning the intermediate beam and the other wooden beams in a position opposite the second press head, the second press head as it moves along said path The claws of the mentioned claw plate are able to drive into the intermediate support and the other lateral wooden support » 15. The device according to claim 14, characterized in that a device for alignment the intermediate beam and the side wooden beams in one first position in transverse alignment with one another and a device coupled to the press heads for practical purposes simultaneous driving of the claw plates into the wooden support links are provided « 7345015 11/24/77 Sf Ot t · I 16. Vorriohtung naoh Anspruoh 15, characterized in that one arranged on the Vorriohtung Device for the mutual bracing of the side and intermediate beams is provided * 17 · Vorriohtung according to claim 15, wherein the intermediate and Side beams form a partially completed frame, characterized in that a device is marked for advancing the frame along the conveyor from the first to a second position, one of the conveyor carried and arranged at a distance from the press heads device for aligning the partially finished Frame in the second position, so that some of the side beams are opposite the relevant press heads, and means for arranging a second intermediate beam in alignment with the press head and on sections the side supports are provided in the second position of the frame, the press head ^ claw plates able to attach to the side and intermediate beams. 18. The device according to Anspruoh 14, characterized in that two rollers or spools which the Carrying claw plate material in roll or ooil form, and a device supported by the Prague construction for the rotatable mounting of the bobbins and for feeding the claw plate enmate rials for the relevant press heads are provided are" 19 · Device according to claim 14, characterized by a third and a fourth, of the supporting structure press head carried on both sides of the conveyor, the third being the first press head and the fourth the second press head is opposite and the third 7345015 24.1177 t ι « ·· • ι «• ν; I Il and the fourth Prussian head length of predetermined orbits are movably mounted, a device for moving these two press heads along their trajectories, one of these press heads moves with them bar carried cutting edge, a device carried by the support structure for supplying claw plate material in the movement path of the third and fourth press head and provided on the device, with the sons of these two scavenger heads cooperating abutments for the Durontrennen the respective Krallenplat tonmaterial β during the movement of the two press heads along their respective paths for the production of Claw plates of a predetermined length, with the third and fourth scavenger heads moving longitudinally their trajectories on the claws of the claw plates. the opposite sides of the conveyor and the wooden support members In the abutting sides and intermediate support members are able to drive in · 20. Device for cutting through elongated, rolled-up Sheet metal claw plate starting material with a multitude of uniformly punched out of it Claws for the purpose of forming a separate claw plate, in particular according to one of the preceding claims, characterized by a support structure, a reel or spool carried by the support structure to allow rotation to receive the rolled up Claw plate material, a scavenger head movably supported by the supporting structure along a predetermined path, means for translating the scavenger head along the predetermined path, one of the scavenger head with it movably carried cutting edge, a device arranged on the supporting structure for feeding the claw plate 734501S all77 «It» < f « J ·· III) ■ ·! ■ I · · t at · < materials from the reel into the path of movement of the press head θ a and one supported by the ^ supporting structure and cooperating with the rear edge of the abutment to the iDuroheparnen the claw plate raterlale during the displacement of the press head along its path to thereby to produce a claw plate of a predetermined length 21 · Device according to Claim 20, characterized in that the abutment is a guide member having a number of prongs or teeth which set a plurality of transversely spaced recesses for receiving and guiding the claws of the claw plate enmate rials and the ends of which are attached to the Able to apply side of the claw plate material from where the claws stick out when the press head and the abutment work together to separate the claw plate 22 · Device according to claim 20, characterized in that the feed device is a guide member with a number of prongs or teeth that set between them a plurality of transversely spaced recesses for receiving and guiding the claws of the claw plate material, and having a device for bracing the claw plate material against the teeth so that their ends rest against the clawed side of the claw plate material. 23 · Device according to claim 20, characterized in that one with the claw plate material engageable means for aligning this material relative to the cutting edge in the manner provided is that adjacent transverse rows, from claws to both seldom lie the cutting edge when the material is severed so that the claw plate material longitudinally -52- A line lying between the two adjacent transverse rows of claws is duroheparted. 24. The device according to claim 20, characterized in that the feed device has a Has passage through which the claw plate material can be advanced into the path of movement of the press head, that the press head along said path is movable in opposite directions between a first position on one side of the passage and a second position on the other side thereof, and that one on the movement of the press head from the second device responsive to the first position is provided for actuating the feed device, so that this advances a predetermined piece of the claw plate material into the path of movement of the press head. 25. The device according to claim 24, characterized in that a device which can be brought into engagement with the claws of the claw plate material for aligning the claw plate material relative to the Cutting edge is provided in such a way that the adjacent claw transverse rows when cutting the Claw plate material lie on opposite sides of the cutting edge, so that the claw plate material along one between the two adjacent Transverse rows of the claws lying line is severed, and that the engagement device can be brought into engagement with the claws between their transverse rows Has element. 26. Device for cutting through elongated, rolled sheet metal claw plate starting material with a Variety of uniform material punched out of it 7345018 24.1177 Claws for the purpose of forming a separate claw plate, in particular according to one of the preceding claims, characterized by a supporting structure, one of the supporting structure allowing one Rotation supported spool or roll for receiving the rolled up claw plate material, one from the support structure press head movably supported along a predetermined path, means for displacing of the press head along the predetermined path, a cutting edge carried along with it by the press head, a device arranged on the supporting structure for supplying the claw plate material from the Coil in the path of movement of the press head and one carried by the supporting structure and with the cutting edge cooperating abutment for cutting through d <? s Claw plate material during the displacement of the press head along its path to thereby create a claw plate To produce a predetermined length, as well as by a device provided on the device for Holding the claw plate on the press head after the claw plate has been separated from the claw plate material has been. 27. The device according to claim 26, characterized in that the holding device the Holds the claw plate on the press head when it is separated from the claw plate material. 28. The device according to claim 26, characterized in that the holding device is an on Press head arranged magnet is. 29. The device according to claim 26, characterized in that the holding device is one of the Abutment is supported guide that interacts with the claw plate and the latter with the abutment couples « 30. The device according to claim 26, characterized in that the holding device is a from Abutment supported projection is that the cutting edge has a corresponding recess for training has a recess in the claw plate, the shape of which is the complementary shape of the projection and recess corresponds, and that the projection has such a length that it is in the further movement of the press head engages along the predetermined path in the recess in order to couple the claw plate with the abutment. 31. The device according to claim 30, characterized in that the projection is dovetail-shaped. 7345011