DE3021563C2 - Rod feeder for profile steel stacking device - Google Patents

Description

8. bar feeder according to claim 7, characterized in that on the carriage (5, 27, 51) pawls (15,38,60) are arranged, which are located when the carriage returns below the conveyor level of the rods are located, and their abutting edges are at a distance in front of the grippers (1, 49, 52) of at least is smaller than the slide stroke by the maximum professional width.

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The invention relates to a rod feeder for a section steel stacking device according to the preamble of claim 1.

Rod feeders should align a stacking device rod by rod exactly transversely to the conveying direction feed, even if the bars cut to sales lengths from the scissor roller table a cross conveyor in groups are conveyed so unaligned that the bars are partly close together, partly with different distances and partly in a considerable inclination next to each other. Since the When the bars are stacked, they have to be placed exactly parallel next to each other and on top of each other The unaligned bars fed to the cross conveyor are precisely aligned before they are introduced into the stacking system will. This results in different rod spacings and, especially with angle profile rods severe inclinations, considerable difficulties and opportunities for malfunctions, which have not yet been satisfactory Way could be fixed.

It is known to align the bars and to push them close together by conveying the bars Staff group drives in front of an advance. Here, however, Winkclprofilc tend to climb on top of each other. Around DE-PS 22 19 541 above the collection point provides for preventing climbing over the corners before the advance precisely adjustable brackets as hold-down devices. In the case of small profile dimensions, tolerances / deviations can result in Deflections and misalignments easily lead to jamming. Also will the accessibility of the system is severely impaired by the overbuilding and the structural effort is considerable elevated. According to DE-OS 14 56 882 (Fig. 1) it is also known to avoid climbing over one another of the angle profiles the rods by means of chains with wedge-shaped thumbs on slide rails against the advance to push. However, by sliding the thumb under the sticks, it gets caught the rod feed out of cycle control.

Another possibility for aligning angle profiles is known from DE-PS 23 28 696. At this Execution, to a certain extent, separate protruding edges are provided for each rod. By gradual Lifting these are used one after the other. When feeding in a very disordered group of rods However, even with careful control, a temporary jam in front of a leading edge cannot be avoided be. Above all, however, the stepped advance templates have to be used with each changeover Profile width can be exchanged.

The invention is based on the object of creating a device of the type mentioned at the beginning, clic l'rofilsläbe. in particular Winkelprofilstäbc, which in groups be funded to align without having to drive the groups in front of an advance

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Here, the bars on the feeder can be in different ways Distance and lie in different, sometimes very considerable, inclinations.

To achieve this object, the inventive rod feeder is designed according to the invention as this is indicated in the characterizing part of claim 1.

This solution has the advantage that the gripper does not already have the rear bars, but only the front edge of the foremost rod in each case, as in Föraerrichtung ve the grippers have mechanical buttons or electronic sensors that control the conveying level then scan whether there are any bars in front of the grippers, and that the grippers are individually aligned with each other steer. In the case of a strong inclination of the bars, the back end of the Siabende is first grasped and pulled forward, until the rod is aligned transversely to the conveying direction, in order to then also be grasped by the other grippers will.

] e after whether you can hook as a gripper, permanent magnets or using electromagnets that can be switched on and off, and whether one uses mechanical testers or electrical ones Uses sensors, and whether to move the grippers back and forth on slides or whether to engage the grippers Can circulate chains, there are different design options at. Preferred embodiments of the invention are characterized in the subclaims.

The invention is described below on the basis of a few preferred exemplary embodiments with reference to FIG Drawings explained in more detail. It shows

F i g. 1 a rod feeder, in which electromagnets serving as grippers work as buttons Swivel arms are mounted in reciprocating carriages, J5

2 shows a rod feeder in which electromagnets are attached to the reciprocating slide as a gripper with skids suspended on parallelogram links upstream as buttons,

F i g. 3 a rod feeder which is different from the rod feeder 2 differs in that instead of electromagnets hooks are provided as grippers,

4 shows a rod feeder in which on slide arranged electromagnets for detecting the bars are controlled by upstream sensors,

Fi g. 5 a rod feeder with the gripper on revolving chains are arranged so that the permanent magnets serving as grippers together with the skids are articulated to the chains with parallelogram links,

F i g. 6 schematically shows a rod feeder in which electromagnets are attached to rotating chains as a gripper controlled by rotating sensors.

In the rod feeder according to FIG. 1, electromagnets (1) that can be switched on and off are arranged at the end of swivel arms (2), the back of which is designed as a skid (3) in front of the magnet and which has a stepped offset in front of the adhesive surface of the magnets form. The magnets (1) are switched on using the switch (26). The Schwcnkarnic (2) are mounted on pins (4) in the carriage (5). Tension springs (6) press the swing arms just enough up that overlying rods not raised advertising h ^r> to, but rather the pivot pot press this me down. When the carriage (5) returns, the swivel arms (2) are pressed down below the conveying level by magnetic pushers (7). The slides (5) run on rails (8) and are pushed back and forth by the eccentrics (13) arranged on the shaft (12) via push rods (9), via crank arms (10) and via connecting rods (t 1). Pawls (15) are pivotably mounted on pins (14) in the carriage (5). These are pressed against stops (17) by counterweights (16).

The angle profile bars (18) are fed in by means of carrying chains (19). from the shaft (20) over Pinion (21) driven and deflected by chain wheels (22, 23). The ones from the electromagnets (1) advanced rods (18) are then switched to downstream by the pawls (15) on the next stroke Daumenketicn (24) pushed on, where they are collected in counted numbers to layers by the thumb cues (24) are moved further by one profile width after each pushed-on rod. To The next thumb is retracted to form a layer. Switches (25) are provided in the rod inlet. if If these switches have been activated at both ends of the rod, the rod feed is stopped and the carriage drive is stopped switched on.

In the case of the rod feeder according to FIG. 2 are electromagnetic magnets that can be switched on and off on reciprocating carriages (27) (28) attached. The skids (29) arranged in front of them are each on two parallelogram links (30, 31) articulated up and down movable. Tension springs (32) grip the links (30) and press them against stops (33) and against the switches (34) that cause the magnet to be switched on. On the handlebars (31) counterweights (35) are attached. When the carriage (27) returns, the runners (29) are actuated by magnetic pushers (36) pressed down below the conveyor level. On the pin (37) there are pawls in the carriage (27) (38) mounted pivotably, which are pressed against stops (41) by counterweights (39) and tension springs (40). The carriages (27) run on rails (42) and are driven via toothed racks (43) by pinions (44). The angled profile rods (45) are conveyed by tension on support blocks (46). To control the rod feed as well as the slide drive, switches (47) and (48) are provided in the rod inlet and on the rack and pinion drive.

The rod feeder according to FIG. 3 deviates from the rod feeder according to FIG. 2 from the fact that as a gripper no magnets but simple hooks (49) are used. These are right at the end of the skids (29) attached and grip behind the front edge of the double T-profiles (50) when the skids spring up.

For gripping flat iron bars or U-profiles, those lying on their backs, however, hook-shaped grippers are not very suitable, so that one mostly uses magnetic grippers will give preference.

Fig. 4 shows schematically a rod feeder at the electromagnet (52), which is attached to the carriage (51) and serves as a gripper, by immediately in front of it these attached sensors (53) are controlled. These sensors feel the position of the leading edge of the The foremost rod of the rod group being fed in is ready when the carriage returns (51). At least two Sensors (53) positioned as far as possible at the ends of the rods emit their tactile impulses into the memory of a control unit not shown and thus fix the sliding position in which the associated electric magnet (52) is switched on. In the meantime, Kalis has moved the rods (54) further forward on the supply chain (55) or new bars are requested, the advance path of the bars after passing the sensors (53)

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also registered in the control unit. will be delivered. The bars can be easily separated

The carriages (51) run on rails (56) and are aligned in parallel and close to one another in counted numbers Pinion (57) driven by racks (58). Collect horizontally in layers and then in layers the carriages (51) are to be turned and / or put down on pins (59) pawls (60). Swiveling for profile steel stored by the electromagnets 5 stacking devices in which the bars are individually drawn forward The sticks must be turned and put down on the following rows Slide on chains (61) to form bars. Rods also fed individually in time

Fig.5 shows a rod feeder with rotating. Since in the inventively executed Grippers. The grippers act as permanent magnets, rods / conveyors, the grippers are moved in rhythm, (62) and attached to the runners (63), ι ο they do not need their own Andie in this case in turn with ParalMogram handlebars (64 and 65), but can be used together with the discard and / circulating chains (6t>) are articulated. Driven by Zugfe- or Wendcglicdern the stacking device the (67), the skids (63) will be in the top when running. The omission of a drive does not only mean ren chain center pressed into the conveying plane of the bars. a significant reduction in the mechanical on-off Stripping the rods from the permanent magnets H wall. but also simplifies the control completely (62) are protruding edges (68) in the conveyor line.

seen. The chains (66) are driven by the

Shaft (69) over the chain wheels (70). At the other end there are 5 sheets of drawings

the chains (66) run over the deflection wheels (71).

On the shaft (69) is a rod transfer device 20 ~ arranged with circumferential pockets (72) and push-off thumb (73). These pockets (72) are eccentric on three-armed rotary stars (74 and 75) revolving around each other, of which the rotary stars (74) are attached the shaft (69) are attached, while the rotating stars (75) revolve on eccentrics (76).

The feeding of the groups of rods is carried out on support cradles (77) in such a way that a whole group of rods is introduced into the area of the gripper (62) rotating on the chains (66), where then continuously jo Rod by rod is removed without the rods in between by the support chains (77) further forward must be brought. The support chains (77) are driven by the shaft (78) via pinions (70) and deflected and tensioned via wheels (80 and 81).

Fig. 6 shows a diagram of a further rod feeder with revolving grippers. Electromagnets (83) are attached to rotating chains (82), which are controlled by sensors (84) that also rotate with them. The distance between the sensor (84) and the following electromagnet (83) must be greater than the maximum permissible distance between two adjacent bars. The electromagnets, and the sensors must be in circulation within the respective active area over the contact fingers (85 and 86) associated with züge- 4 ^r> Koniaktschiencn (87 and 88) are in communication. If several electromagnets (83) and sensors (84) arranged one behind the other are in operation at the same time, the contact rails (87 and 88) must also be available in a corresponding number -, 0.

The chains (82) are driven by the shaft (89) via chain wheels (90). The chains are diverted (82) through the chain wheels (91), which rotate on journals (92).

The angled profile bars (93) are conveyed by carrying chains (94), which are carried by the shaft (89) via chain wheels (96) are driven. The rods (93) pulled forward by the electromagnets (83) on rails (97) are deposited at the outlet of the chains (82) by switching off the electromagnets (83) and then by pushing off arms (98). which rotate with the shaft (89), pushed out of the area of the chains.

The invention thus makes it possible to produce sectional steel bars, In particular, Winkelprofilc then also handle b5 in automatically working stacking devices to be introduced when the bars from the scissor roller table are at different inclines and spacings.

Claims (7)

30 21 Claims: 10 15 20 25 1. Rod feeder for profile steel stacking devices, the unaligned profile steel bars, in particular angle profiles, at uneven spacing across are supplied lying next to each other in groups, the individually one after the other rod by rod with movable Detected hooks or magnets serving as grippers, aligned transversely to the conveying direction and either directly with the grippers or with additional ones driven together with the grippers Conveyor links a downstream stacking device feeds, which serve as grippers Hooks or magnets on several below the conveyor level over the length of the bars side by side arranged reciprocating carriages or continuously rotating chains attached are, characterized in that serving as a gripper hook (49) or magnets (1, 28,52,62,83) mechanical in the conveying direction Buttons in the form of skids (3, 29,63) or electronic sensors (53, 84) are connected upstream, which scan the space in front of the grippers over a distance that is greater than the maximum distance between two adjacent rods of the supplied rod group, and those during the conveying process bring the foremost fed rod into engagement with the hooks (49) or the magnets (1, 28, 52, 83) turn on below this. 2. Rod feeder according to claim 1, characterized in that that the skids (3, 29, 63) during the conveying process by spring force (6, 32, 67) and / or counterweights (35) are pushed upwards and in their upper position above the conveyor level protrude to a length that is greater than the maximum distance between two adjacent ones Rods, and that the ends of the runners (3, 29,63) to the grippers (1,28,49,62) fall in steps. 3. Rod feeder according to claim 2, characterized in that the hooks serving as grippers (49) or magnets (1, 62) can be moved up and down together with the skids (3, 29, 63). 4. Rod feeder according to claim 3, characterized in that the skids (3, 29) when returning the slide (5,27,5 «) by magnetic pushers (7, 36) must be pressed under the conveyor level of the bars. 5. Stabzuförderer according to claim 2, characterized denotes overall ¹ Wi that are mitverfahren with the grippers to turn serving as gripper Elektromagnetc (1, 28) switches (26, 34) are provided, and the upstream by the skids ( 3.29) must be switched on. 6. Rod feeder according to claim 1, characterized in that at least two of the sensors (52, 84) their sample values independently of each other in a control device, which the command for the associated electromagnet (s) triggers, enter. 7. rod feeder according to claim 1, characterized in that dall the travel path of the arranged on the reciprocating carriages (5, 27, 51) Grippers (1, 28, 49, 52) is at least the largest profile width larger than the mall by which the two Ends of a rod offset from one another measured in the conveying direction at maximum inclination could be.