EP1582463A2 - Device for a strapping tool - Google Patents

Abstract

The device serves to close a catch with overlapping surrounding elements consisting of pliers which can swivel and be adjusted from an open position into a closing position. A cutter is provided for cutting off free tape ends. The pliers are tiltable (4) by means of a control drive (7) and the catch (3) is essentially relocatable in linearly. In an open position, the pliers are operable over a lever (8) and linked to the control drive. A central holder (10) between two cover plates (13, 14) is arranged and connected on a carrier (15) with the control driver fastened to it. Between the cover plates and the pliers intermediate plates are arranged. The cutter is fastened to the plate and the central holder is fastened into a lengthwise slot (20) of the cover plate (14).

Description

The invention relates to a tool for a Strapping device for strapping goods with a Strapping, with the tool for closing a closure sleeve that serves each other overlapping end portions of a strapping band surrounds, consisting of a closing pliers whose Pincers held pivotally and off an open position in a closed position are adjustable bear, as well as a cutter for Separating the locking sleeve superior free end of the tape.

From EP 1 167 200 A 1 is a tool for Cutting a locking sleeve known this tool being a hand-operated pliers is the two pliers jaws which, by means of handling from the Opening position in the closed position are adjustable.

From a non-written verifiable Prior art is a tool for close known, in addition to a cutting knife for separating the closure sleeve outstanding free end of the tape is provided. Such closure tools find All-round strapping equipment in which a Strapping tape is guided around a packaged goods, and then it is stretched. At the Overlap region of the strap is then a closure sleeve attached, the closed by means of the tool to the Firmly connect end areas with each other. The surviving free end of the tape is using the Cut-off then separated. It is located the cutter blade is moving Connected with the pliers jaws. It is very Precise guides required by the Pliers jaws and the cutting knife together to lead. A wear of the pliers jaws and / or the cutter or an imprecise Produce the guides of the pliers jaws lead to an increase in the cutting air and thus to an increase in the cutting forces. in the Extreme case leads to the game enlargement Failure of the entire cutting mechanism. moreover is a separate assembly and disassembly of the Cutting knife and pliers not possible.

Based on this prior art is the Invention the task is based, a tool generic type to create which simplified with regard to the forceps guide, in which the game for the Pliers jaw movement does not affect the game of Abknihmessers affects and very simple to assemble and disassemble.

To solve this problem it is proposed that the jaws, by means of a preferably pneumatic actuator to the closure sleeve towards and away from this substantially linear limited displaceable and in the advanced Position are pivotable, with the jaws are operated by toggle lever, which at a Yoke part are hinged, one of which is in Acting direction extending plunger protrudes, the connected to the actuator is that the Yoke between two cover plates arranged and is guided, which are interconnected, and one on a plate-shaped carrier is fixed on the housing of the actuator is attached that between the Pliers jaws by means of an actuator for Locking sleeve towards and away from this in the substantially linearly limited and displaceable are pivotable in the advanced position, the jaws can be actuated via toggle levers are hinged to a yoke part of the one extending in the direction of adjustment Tappet protrudes, with the actuator connected to that yoke between two Cover plates arranged and guided, the connected to each other, and one of them a plate-shaped carrier is fixed, the am Housing of the actuator is attached to that between the cover plates and the jaws Intermediate plates arranged and at least a cover plate are guided, which limits are displaceable parallel to the direction of adjustment and where the free ends of the pliers jaws are articulated, and that between the plate-shaped carrier and the attached thereto Cover plate the cutting knife in the direction of adjustment guided and limited slidably arranged is, wherein the cutting blade means at least one driver is displaceable, which is attached to the yoke part and into one Longitudinal slot of the cover plate engages.

The adjustment of the pliers jaws from the Opening position in the closed position as well the displacement of the jaws from the Non-use position into the use position by means of a pneumatic actuator, taking the pliers jaws and that with this coupled yoke part between cover plates and partly between intermediate plates attached to the Cover plates are arranged displaceably, are guided. The cover plates are on the attached plate-shaped carrier. The Cutting knife in turn is only between a cover plate and the plate-shaped carrier guided and arranged. According to this training The downward movement of the jaws is made the non-use position into the use position and then the turn in the Closing position achieved in that the corresponding parts in slots or are guided in the same way Cover plates or the intermediate plates are located. The cover plates are fixed with connected to the plate-shaped support, which also the tensioning drive and the pneumatic actuator wearing. The cutter is located regardless of the downward movement of the Pliers jaws between the plate-shaped carrier and the immediately attached to it Cover plate. One from the zangezlfunktivzl resulting movement play affects it not on the clipping knife respectively his leadership. The function of the tool is thus significantly improved and it will be significantly longer lifetimes achieved without that the cutting air of the cutting knife increased.

In addition, the complete unit consisting of the cover plates and the intervening Zangenteilen and the like of the plate-shaped carrier are removed to then remove or replace the cutter to be able to.

A preferred development is in it seen that between the cover plates near the the pliers jaws facing away from the end guide parts are fixed, that the yoke part adjacent and at this hinged ends of the toggle lever at the opposite edges recesses in which the guide parts in the engage withdrawn open position and over a small part of the adjustment in the closed position form a linear guide, prevented in the pivoting of the toggle is.

The recesses are on the outside of the Side edge edges of the toggle lever. You are so aligned that in the non-use position of the tool a peripheral edge of the recesses is directed parallel to the sliding direction and an end portion of the recesses transverse to this Direction of displacement is addressed. This will achieved that at the beginning of advancing the Knee lever or jaws first a linear feed movement according to the Length of parallel to the direction of displacement Edge edges of the recess takes place before the Slide guide parts out of the recess and release the toggle, leaving this can pivot if the feed continues takes place forward while the jaws getting closed. The result is hereby achieved that the jaws first from the Opening position over the each other too connecting band areas and those there arranged guide sleeve can be adjusted and only after reaching the target position a Swiveling the jaws for cutting the closure sleeve takes place. After this Cutting the plunger is withdrawn, and This will open the jaws first and in the open position, the starting position moved back. When relocating grab the guide parts, in particular Guide pins or guide sleeves, back in the recesses of the edges of the toggle, until the end position is reached and the Guide parts at the transverse to the direction of movement rest lying edge of the recess.

Preferably, it is provided that the swinging the pliers jaws from the Closed position in the open position Limited stops between the Intermediate plates are provided.

It is particularly preferred that the Travel of the cutting knife through a slot in the knife body and one the slot limited pen, which is the Cover plate interspersed.

It is preferably provided that the Cover plate in a longitudinal slot sweeping Driver, preferably a bolt, with Stop parts of the body of the cutter blade cooperates such that the cutting knife only after adjusting the jaws in the Closed position, when these are in Closed position by further shift of the yoke part in the Cutting position is moved, the Cover plate in a longitudinal slot sweeping Carrier with stop parts of the body of the Cutting knife cooperates such that the Cutting knife only after adjusting the Pliers jaws in the closed position, if this are in the closed position, by more Displacement of the yoke part in the Cutting position is moved, and at Returning the jaws in the Opening position the cutter, the one Has entrainment, by the displacement of the Intermediate plate is moved to the rest position, wherein the intermediate plate the driver and thus the cutting knife pushes back, where at the same time the intermediate plates with the Pliers jaws opposite the cover plates be relocated.

Furthermore, it is preferably provided that the plate-shaped support a guide for the overlapping band ends and a counter knife for having the cut-off blade.

Advantageous developments are in the Claims 7 and 8 indicated.

Figur 1

ein Rundumreifungsgerät mit Verschließerwerkzeug und Spannantrieb in Ansicht;

Figur 2

ein erfindungsgemäßes Werkzeug in Vorderansicht;

Figur 3

desgleichen in Seitenansicht gesehen;

Figur 4

desgleichen von unten gesehen;

Figur 5

Einzelheiten des Werkzeuges in Vorderansicht in der Öffnungsstellung;

Figur 6

desgleichen von schräg vorn gesehen;

Figur 7

desgleichen in einer Zwischenstellung;

Figur 8

desgleichen von schräg vorn gesehen;

Figur 9

das Werkzeug in der Schließstellung von vorn gesehen;

Figur 10

desgleichen von schräg vorn gesehen.

An embodiment of the invention is illustrated in the drawing and described in more detail below. It shows:

FIG. 1

a strapping tool with capper tool and tensioning drive in view;

FIG. 2

an inventive tool in front view;

FIG. 3

likewise seen in side view;

FIG. 4

likewise seen from below;

FIG. 5

Details of the tool in front view in the open position;

FIG. 6

likewise seen from diagonally forward;

FIG. 7

likewise in an intermediate position;

FIG. 8

likewise seen from diagonally forward;

FIG. 9

the tool seen in the closed position from the front;

FIG. 10

likewise seen from diagonally forward.

FIG. 1 shows a strapping device, which serves to wrap around a band Packing goods, straining the strapping and to close by means of a closure sleeve. The device consists of the tool 1 for Closing or connecting the overlapping end portions of a tape by means of a locking sleeve, as well as a tensioning drive 2 for tensioning the strapping band. The tool 1 is a detail in FIGS. 2 to 4 shown. The other figures show Details of the tool 1 in different functional positions and Views. The tool 1 is used for cutting a closure sleeve 3 to the one above the other overlapping end portions of a Strapping band, which for example according to the view according to FIG. 2 at the bottom of FIG forward to back through the plane of the drawing is guided. Here are the overlapping End areas immediately below the tool 1 arranged in the correct position. The closure sleeve 3 can be set up manually and then by means of of the tool 1 for connecting the band ends getting closed.

The tool 1 has jaws 4, the each pivotable about a hinge pin 5 are held. The jaws are out of the Position according to Figure 2 or according to Figure 5 downwards linearly displaceable and then pivoted in the closed position, such as for example, shown in Figure 9. Furthermore is a cutter 6 as part of the Tool 1 arranged, which for separating of the locking sleeve 3 superior free Band end serves.

The jaws 4 are by means of a pneumatic actuator 7 in the Drawing Figure 2 down, to Locking sleeve 3 every now and then back from this path is essentially linearly limited displaceable and in the advanced position, as shown in Figure 7, for example, in the closed position swiveling. Here are the Jaws 4 via knee lever 8 actuated on the free end of the jaws 4 at 9 over Joint bolts are articulated. The other end of the Lever 8 is hinged to a yoke 10, either by means of two hinge pins 11 or only via such a hinge pin 11, on which both levers 8 are articulated. Of the Yoke 10 projects in the direction of adjustment a plunger 12, with the pneumatic actuator 7 is coupled, so that the plunger accordingly the representation in Figure 2 down or is movable upwards.

The yoke 10 is between two cover plates 13,14 arranged and guided to each other connected and attached to a plate-shaped or L-shaped carrier 15 is fixed in a suitable manner are, for example by screws 16,17. The a cover plate 14 is directly with the plate-shaped carrier 15 is connected. Of the plate-shaped carrier 15 is in turn connected to the Housing of the actuator 7 is connected, so that these parts form a rigid unit.

Between the cover plates 13,14 and the Pliers jaws 4 are intermediate plates 18,19 arranged, which together with the jaws 4 on the cover plates 13,14 located there Slotted holes with drivers, especially bolts 5, are guided so that they are limited in parallel are displaceable to the direction of adjustment. Between the plate-shaped carrier 15 and the thereto attached cover plate 14 is the Cutting knife 6 out in the direction of adjustment and limited slidably arranged, the Cutting knife 6 by means of one or two Bolt 11 is slidable, the or which is attached to the yoke 10 is / are and the Cover plate 14 in one or two Longitudinal slot (s) 20 passes through / pass through.

Between the cover plates 13,14 are close to the Pliers jaws 4 opposite end, guide parts, in particular guide pin 21 is fixed, wherein the yoke 10 adjacent and at this hinged ends of the toggle lever 8 to the opposite edges recesses 22nd in which the guide parts 21 in the retracted opening position according to Figure 2 intervention. When advancing the pincers from the starting position according to Figure 2 in the Between position according to Figure 7 slide the Guide parts 21 at the parallel to Adjusting direction extending edge 23 of Recess 22 along. Upon further shift in the closing direction, the toggle lever 8 released and can pivot until finally the closed position according to FIG. 9 is reached. When resetting, first again the opening movement of the pliers before then the levers with the Recesses 22 on the guide parts 21st accumulate, which slide along the peripheral edge 23, until they reach the transverse edge 24th arrive, whereby the travel is limited.

In addition, the pivoting path of the jaws 4 from the closed position to the open position limited by stops 25, between the Between plates 18 and 19 provided and are fixed to these. In the Closed position is the path of the yoke 10 after bounded below (seen in FIG. 9) by that it is against the top edge of the Between plates 18,19 starts and thus also the Pincushion baking way 4.

The travel of the cutting knife 6 is through a slot 26 in the body of the cutting knife 6, which extends in the direction of adjustment and a the slot 26 by cross-pin 27th limited, the intermediate plates 18,19 and the Cover plates 13,14 passes through and with his Threaded end in the plate-shaped carrier 15th is screwed.

The cover plate 13 and / or 14 in the Longitudinal slots 20 by cross bolt 11th or the pair of bolts 11 cooperates with Stop parts 6 'of the body of Cutting knife 6 together so that the Cutting knife 6 only then to separate the The end of the tape is advanced when the Pliers jaws 4 the closed position according to FIG. 9 achieved. By further shifting the Jochteiles 10 is then namely the Cutting knife 6 advanced and the tape end severed. When returning, first the jaws 4 in the open position pivoted and in the backward shift of Pliers jaws according to the in the slots 28 cross-bolt 5 is the cut-off 6 moved back.

At the cutting knife 6 is a pin 32nd attached, the one in the direction of adjustment extending slot 31 of the cover plate 14th passes through and above the knife 6 protruding surface protrudes. When returning the Jaws 4 also become the intermediate plates 18,19 moved back, with the upper edge the intermediate plate 19 starts against the pin 32 and move it up in the slot, whereby the cutter 6 taken and in the starting position is shifted.

The plate-shaped carrier 15 also has a Guidance for the overlapping band ends in the Area 29 and forms a counter blade 30 for the cutting knife 6.

In the drawings is to illustrate the Facts only in Figures 1 to 4 the tool 1 with the two cover plates 13, 14th shown. In Figures 5 to 10 missing the front cover plate 13, so that behind it located individual elements are clearly visible.

In the embodiment of the invention is the Guided tour only through slots and in the Long holes reached reaching bolts, so that on complex linear guides, for example Dovetail guides or the like, can be waived. In addition, the leadership the severing knife 6 completely separate from Pliers mechanism arranged, namely between the cover plate 14 and the carrier 15, so that a Wear or an increase in the Movement of the forceps not on the Cutting mechanism affects.

Replacement of parts is very easy possible by the appropriate bolts 16 and 17 are solved, so that the complete Tool unit of the plate-shaped carrier 15 and the fixed cover plate 14 removed can be replaced and possibly defective parts or can be repaired.

Below is briefly again the Overall function of the tool described.

In the starting position, as shown in Figure 2 to 6, the plunger 12 is located in the upper end position. The jaws 4 are opened and the associated bolt 5 sit at the top of the slots 28 of the Intermediate plates 18,19. The guide parts (Guide sleeves) 21 sit in the recesses 22 and there they are at the edge 24 at. The cutter 6 is located in the after top retracted position. The bolt 27 is located at the lower end of the slots 26. If now the pneumatic actuator 7 is actuated, then results in the position shown in Figure 7 and in Figure 8 is shown. The jaws 4 are pushed down linearly and lie with their Bolt 5 at the lower end of the slots 28 at. The bolts 11 are from the upper end of the Long holes 20 removed.

The guide parts 21 (guide sleeves) are located on End of extending in the direction of leadership Edge 23. By further pressing the Pneumatic drive 7, the adjustment takes place in the position shown in FIGS. 9 and 10. By the knee lever 8, the jaws 4 pivoted in the closed position. The bolts 5 are located at the lower end of the slots 28. The bolt 27 is located at the upper end of Langloches 26. The bolts 11 are located on the lower end of the slots 20 and press on the upper end of the cutter blade 6 and take the cutter 6 when closed Pliers with, so this against the counter knife 30 is moved and disconnected the free end of the tape becomes. Subsequently, the pneumatic actuator 7 acted in opposite directions, so that the Tappet 12 in turn moved up. hereby be the jaws from the position according to Figures 9 and 10 in the position according to Figure 7 and 8 and then in the position shown in FIG. 1 moved back to 5.

The tool is then to re-close and Cutting a locking sleeve ready.

The invention is not on the Embodiment limited, but in the Revelation often variable.

All new, in the description and / or drawing disclosed individual and Combination features are called considered essential to the invention.

Claims (8)

Tool for a strapping machine for strapping goods with a strapping band, the tool (1) for closing a closure sleeve (3) surrounding the overlapping end portions of a strapping band consisting of a pair of pliers, the pliers jaws (4) pivotally held and out an opening position in a closed position are adjustable, and a cutting knife (6) for separating the closure sleeve (3) outstanding free end of the tape, characterized in that the jaws (4) by means of an actuator (7) to the closure sleeve (3) out and from this away substantially linearly limited slidably and are pivotable in the advanced position, the jaws (4) via toggle lever (8) are actuated, which are hinged to a yoke member (10) from which a plunger extending in the direction of movement (12) protrudes , which is connected to the actuator (7), that the yoke (10) between two cover plates (13,1 4) are arranged and guided, which are connected to each other, and one of which is fixed to a plate-shaped support (15) which is fixed to the housing of the actuator (7), that between the cover plates (13,14) and the jaws (4 ) Intermediate plates (18,19) are arranged and guided on at least one cover plate, which are limited parallel to the direction of adjustment and on which the free ends of the jaws (4) are hinged, and that between the plate-shaped support (15) and the attached thereto Cover plate (14) the cutting blade (6) guided in the direction of adjustment and limited slidably disposed, wherein the cutting blade (6) by means of at least one driver (11) is displaceable, which is attached to the yoke part (10) and in a longitudinal slot (20) Cover plate (14) engages. Tool according to Claim 1, characterized in that guide parts (21) are fixed between the cover plates (13, 14) near the end facing away from the jaws (4) such that the ends of the toggle lever (8) adjacent to the yoke part (10) and hinged thereto ) have at the opposite edges recesses (22) into which engage the guide members (21) in the retracted open position and form over a small part of the adjustment in the closed position a linear guide in which a pivoting of the toggle lever (8) is prevented , Tool according to claim 1 or 2, characterized in that the pivoting path of the jaws (4) from the closed position to the open position by stops (25) is limited, which are provided between the intermediate plates (18,19). Tool according to one of claims 1 to 3, characterized in that the travel of the cut-off blade (6) by a slot (26) in the knife body and a slot passing through the pin (27) is limited, which passes through the cover plate (14). Tool according to one of claims 1 to 4, characterized in that the cover plate (14) in a longitudinal slot (20) by cross-driver (11) with stop members of the body of the cutting blade (6) cooperates such that the cutting blade (6) only after Adjusting the jaws (4) in the closed position, when they are in the closed position, is displaced by further displacement of the yoke (10) in the cutting position, and when returning the jaws (4) in the open position, the cutting blade (6), the one Carrier (32), is displaced by the displacement of the intermediate plate (19) in the rest position, wherein the intermediate plate (19) the driver (32) and thus the cutting blade (6) pushes back, wherein at the same time the intermediate plates (18,19) with the pliers jaws (4) relative to the cover plates (13,14) are shifted back. Tool according to one of claims 1 to 5, characterized in that the plate-shaped support (15) has a guide (29) for the overlapping strip ends and a counter blade (30) for the cutting knife (6). Tool according to one of claims 1 to 6, characterized in that the actuator (7) is a pneumatic actuator. Tool according to one of claims 1 to 7, characterized in that the guide pins or guide sleeves are formed.

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