MXPA99009904A - Fleja device - Google Patents

Abstract

The present invention relates to a strapping apparatus for strapping goods with a band, wherein the strapping apparatus has a tensioning device which is operatively connected to a tension driver and is intended to tension the band, a sealing device for sealants two ends of the band and a plurality of rewind locks for fixing the band in the strapping apparatus, characterized in that as an element for controlling the functions of the strapping apparatus is provided with an essentially plate-shaped control board (14) which is operatively connected to an actuating element, where a movement of the actuator element carries a pivoting movement of the control board (14), and the pivoting movement of the control board can be transmitted to a plurality of transmission elements which are coupled to the control panel and with which the rewind locks (5, 6, 26) can be transferred from a position No blocking to an insertion position and vice versa

Description

Utility Apparatus This invention relates to a strapping apparatus for strapping goods with a band, the strapping apparatus having a tension device which is operatively connected to a tension driver and is intended to tension a band, a sealing device for sealing two ends of a band and a plurality of rewind locks for fixing the band to the strapping apparatus. The invention relates primarily to portable, mobile, ie, non-stationary and permanently installed, mobile electrically powered shroud devices, which are preferably electrically powered and which are provided with an independent power line, such as a power battery, for example. storage. These devices are used to strapping goods with a plastic band. For this purpose, the strapping apparatus is disposed on the goods and a band loop is passed around the goods and inserted into the strapping apparatus. The end of the band and the second end of the band loop, which still has to be detached, are in this case arranged in the strapping apparatus. Subsequently, a tension band is applied to the band through elements of the tension device of the strapping apparatus. The strip operation ends by a subsequent welding operation of two layers of the band lying on top of one another and a detachment of the band loop from the supply roll of the band. In the case of these strapping devices, it is always a duty to save weight in order to improve the handling and transportation capabilities of the devices. As for the components of the apparatus that is driven by an engine, a low weight of these components generally means a reduction in the amount of energy required for the strip, where the number of strapping can be achieved can be increased with a battery charge of storage . Therefore, the invention is based on the objective of providing a strapping apparatus which is as lightweight as possible while at the same time having a functional reliability. This object is achieved, according to the invention, in the case of the strapping device mentioned at the beginning, in which the control functions for the rewind locks are transmitted from a hand lever to the rewind locks only through a board of central control. The central control board preferably transmits the control functions for all the rewind locks present. This allows the number of individual parts to be reduced, where the weight of the strapping apparatus, which is intended as a hand-operated mobile apparatus, can be reduced. Since all control functions are initiated from the central hand lever, the operation of the strapping apparatus is also made easier as a result of this. Since a control board according to the invention can be preferably coupled in a pivoting manner and since the pivoting or rotary movements can be executed with less sophisticated mechanisms than the translation movements, in this way a device can be created of functionally reliable control in a comparative manner and still of light weight. In a particularly preferred embodiment, the control board is pivotally coupled to three points, the control functions for the strapping apparatus are transmitted to all coupled points of the control board. An additional weight reduction can be achieved if the control board is guided only through the elements of the coupling points and consequently the guide elements separately can be avoided. A particularly simple and space-saving structural design of a strapping apparatus according to the invention can provide that the control board is connected to the hand lever through a pivot lever. The transmission elements, for example, rotary axes, through which the rewind latches are transferred from a blocking position to an insertion position or vice versa, can be connected to the control board. In a further preferred embodiment, a strapping device has at least two rewind locks, with which the strip can be fixed. In this case, the closing device must be arranged between the two rewind locks. This arrangement has proven to be particularly successful for applications in which the web is "pulled out" from the closure device through the tension device, and not "pushed in", during the tensioning operation. This means that it is a structural design of a strapping device in which the tension device is arranged behind the closing device in the tension direction. However, it is particularly preferred if a third rewind latch is present, with which the tension wheel can be fixed. In this case, the tension wheel must be stopped, at least against the rotary movements in the tension direction. With this arrangement it is possible for the band that has been pulled through the closing device during the tension operation to be fixed with the tension of the band already applied for the closing and cutting operation, and yet for that section of the band that is subsequently welded by friction and cut that is essentially released again from the tension of the band. This has the advantage that the movement of the welding shoe which is preferably carried out substantially transversely with respect to the longitudinal extension of the band can be better converted into heat of the band, and that clean cuts of the edges during the cutting of the plastic band. The plastic bands under tension tend to divide during the cut, incapacitating the functional reliability of the apparatus.

To design a functionally rewind insurance. In accordance with the invention, reliable, according to the invention, it can also be provided in a strapping apparatus mentioned at the outset that a locking lever of said rewinding latch is at least mounted on an eccentric shaft and arranged eccentrically with respect to the rotating shaft. In this case the locking lever must have the ability to connect in a rotary manner to the rotary shaft through a coupling and be arranged in a rotary manner freely on the eccentric shaft. With this arrangement, the rewind latch can be transferred very quickly from the insertion position for the band in a clamping position. The high acceleration in this way allows the band to be clamped quickly and reliably, which contributes to the functional reliability of the apparatus. Further preferred refinements of the invention arise from the dependent claims. The invention is explained in greater detail on the basis of the exemplified embodiments represented schematically in the figures, in which: Figure 1 shows a strapping apparatus according to the invention in a first side view, a hand lever located in a first end position; Figure 2 shows the strapping apparatus of Figure 1 with a different position of the hand lever; Figure 3 shows the strapping apparatus of Figure 2 in a rear view; Figure 4 shows a sectional representation of a rotary axis of the strapping apparatus; Figure 5 shows a tension driver of the strapping apparatus; Figure 6 shows the voltage driver of Figure 5 during a voltage phase; Figure 7 shows the voltage driver of Figure 5 during a welding operation; Figure 8 shows a sectional representation of an additional rotary axis of the strapping apparatus; Figure 9 shows a rewind lock of the strapping apparatus in a first end position; Figure 10 shows the rewinding latch of the strapping apparatus in a second end position; Figure 11 shows a representation of the strapping apparatus according to Figure 3, the hand lever which is located in a second position; Figure 12 shows a representation of the strapping apparatus according to figure 3, where the hand lever is located in an intermediate position. Figure 13 shows a representation along the line A-A in Figure 4; Figure 14 shows a sectional representation along line B - B in Figure 4; Figure 15 shows a sectional representation along line C-C in Figure 4; Figure 16 shows a part of a possible welding device according to the invention - located in a welding position - in a partially sectioned representation. The welding device of Figure 16 differs from the welding device shown in a highly schematic form in Figure 1; Figure 17 shows a sectional representation according to the line D-D of Figure 16; Figure 18 shows a welding device of Figure 16 in an insertion position. In FIG. 1, a strapping device according to the invention is shown in the box 1 in which a tension device with a voltage driver 2, a closing device 3, designed as a welding device, is arranged, cutting device 4, as well as three rewind locks, of which only two of the rewind locks 5, 6 can be seen in Figure 1. Box 1 has below these components a base plate 7, which is subdivided in two arms 11, 12. The two arms 11, 12 are arranged at a distance from one another and provide an opening therebetween. A supporting surface 11 of the arm 11 for arranging the strapping apparatus in the goods can, in another exemplified embodiment of the invention not shown., to be concavely curved, in order that the apparatus can be arranged safely on round goods. All functions of the strapping device provided with a battery or storage battery 8 are initiated by a hand lever 9, which can be moved by pivoting about a rotating shaft 10, mounted on the case 1, from a first end position. to a second extreme position. As can be seen in particular in Figure 3, a first pivot arm 13 is disposed in a fixed position rotatably on the rotary shaft 10. The pivot arm 13 is also attached to a plate shape and a control board essentially triangular 14, which also has a second pivot arm 15 and a cover 16 coupled thereto. The flasher 16 is provided with a slotted joint 17. In Figures 4 and 5 it is shown that on a rotating shaft 18 of the second pivot arm 15 there is a first double lever 19, which has two lever arms 20, 21. Respectively arranged at the ends of the two lever arms 20, 21 where there is at least one roller rotating freely. In the pivoting range of the first double lever there is a lever arm 24 of a second double lever 25, which belongs to a third rewind latch 26. The second double lever is arranged on a pivot axis 27 of the tension driver and has a second lever arm, which is provided with a fastener 28. The tension driver 2, which is mounted in the same manner on the pivot shaft 27, can be moved with pivoting about the pivot shaft 27 through an actuator on the hand lever. The tension driver 2 has a tension wheel 30 arranged on an axis of a d.c. motor, which is not shown in greater detail. Arranged coaxially with respect to the tension wheel 30 on the same axis is a gear ring 31 of a planetary gear mechanism, whose circumference is provided by two diametrically opposed depressions 35, 36. The depressions 35, 36 are intended to be engaged to latch 28 of third rewind latch 26. Through engaging this, ring gear 31 can be secured against movements in a counter-clockwise direction. It should be taken into consideration here that all references to the direction of the rotation of the course always relate to a respective representation in the Figures It is not represented in the figures that this is not only a planetary mechanism of gears with the intention of achieving a transmission of a reducing passage disposed coaxially with respect to the tension wheel 30, but also the d.c. it is arranged coaxially with respect to the two aforementioned components. This arrangement also contributes to achieving high efficiency of the strapping apparatus. In order to increase efficiency, the planetary gear mechanism has three steps of reducing steps - instead of the two otherwise customary stages in the case of a hand operated choker apparatus. The second arm 12 of the base plate 7 (Figure 1) is disposed below the tension wheel 30. In a depression in the second arm 12 is an oscillator 37, which can be pivoted about the axis of the oscillator 38 (Figures 5 - 7). The oscillator frame 37 is in this case made to be able to rotate freely around the axis of the oscillator 38, where it aligns itself according to the magnitude and the effective direction of the applied pressure of the band or wheel of tension 30. Fixed at the ends of the two oscillating arms of essentially the same length, there is in each case an essentially rotary recessed roller 39, 40, which act without a flexible drive belt, for example as a V-band. , directly on the strapping band. Of the two axes of the recessed rollers 39, 40, aligned essentially parallel to the axis of the oscillator, a shaft or recessed roller is placed - with respect to the tension direction (arrow 43) - opposite the axis of the oscillator 38 and the Another recessed roller is located behind it. The distances of the axes of the recessed rollers 39, 40 from the axis of the oscillator 38 are consequently equal. Furthermore, it can be seen in the representations of Figures 5-7 that an imaginary junction line 41 from the rotary axis of the tension wheel to the axis of the oscillator 38 is aligned substantially orthogonally with respect to the arm 12 of the plate. of base. The tension wheel 30 can be brought into contact with the two rollers 39, 40 through a pivoting movement about the pivot axis 27. Therefore, the distance between the two recessed rollers must be dimensioned in such a way that can obtain an adequate wrapping angle (a) of the band on the tension wheel (Figure 6). It should be understood that this means that the wrapping angle should be of such a size that the skidding of the band with respect to the tension wheel can essentially be at least avoided. In the exemplified embodiment, the distance between the two recessed rollers 30, 40 - which are much smaller than the tension wheel - is approximately 70% of the radius of the tension wheel. It is important to mention that this value can vary depending on, for example, the force of the pressure applied by the tension wheel to the oscillator, the nature of the surface and the material of the tension wheel, as well as the type of the band, etc. Finally, as a result of the geometrical conditions, it can also be provided that a force resulting from the pressure applied by the tension wheel to the oscillator 37 does not intersect the oscillator axis. As a result of this, when the pressure is applied across the tension wheel to the oscillator there is always a torsion about the axis of the oscillator 38, where a good alignment of the oscillator with respect to the tension wheel is particularly achieved. Also mounted on the same axis of the oscillator 37, as in the recessed roller 40 of the oscillator 37, at the rear in the direction of tension (arrow 43) there is a catch with pivoting movement 44. In a basic position shown in Figure 5, the sear 44 is aligned essentially vertically. In this basic position, the tension wheel 30 is supported only on the catch 44. As a result, between the tension wheel 30 and the recessed rollers 39, 40 a gap is formed, in which the web 45 to be tensioned - shown in Figure 6 - it can be inserted. As can be seen in Figure 6, the tension wheel 30 captures the fastener 44 with it during the rotary movements in a counter-clockwise direction. As a result, this latch rotates clockwise to another end position, in which the tension wheel 30 can be lowered onto the oscillator 37. This is the tension position of the strapping apparatus, in which it is applied. a tension force to the loop of the band 46. Since the oscillator 37 is pivotally mounted, it is thus adjusted in such a way that the two recessed rollers 39, 40 can absorb the forces that arise during tension and can deflect them in the base plate 7. The front part of the rewind safety , shown in Figure 1, is mounted - in a manner corresponding to the representation of Figure 4 - with a shirt-shaped section 47 on an eccentric shaft 48, which in turn is arranged on a rotary shaft 18. This The saddle is made in such a way that the front part or the first rewind latch 5 is relatively rotatable with respect to the rotary axis 18. The rewind latch 5 is provided with a spring (not shown), which acts approximately in the direction of pulling of the band and through which the rewind latch 5 is present on the first arm 11 of the base plate 7. The transmission of a rotary movement is carried out by contact of a control cam 49, which is arranged on the eccentric shaft and pressed against a control cam 50 provided on the shirt-shaped section (Figures 4 and 15). The coupling of the rewind latch 5 to the eccentric shaft 48 is consequently carried out by positive coupling of the two control cams 49, 50. At one end of the rotary shaft 18 of the second pivot arm 15 there is also a plate indexed 51, which is connected in a rotatably fixed manner to the rotary shaft 18. The indexed plate 51 is subjected to forcing the rotational movements in a clockwise direction through a spring 42, shown in Figure 3. The plate indexed 51 has in the jaws of the end faces 54a, 54c of a coupling (see Figure 14), through which the indexed plate 51 can be connected in a fixed rotary fashion to the pivot arm 15. For this purpose , the two jaws 54a, 54c, are disposed respectively in an opposite relationship diametrically on one end face of the indexed plate 51. The other jaws 54b, 54d are located on the pivot arm 15 and lie similarly in a diametrically opposite relationship. Since a jaw of the pivot arm 15 is hooked respectively between the two jaws of the indexed plate, in certain rotary positions between the indexed plate 51 and the pivot arm 15 a fixed connection is obtained rotatably in the form of a positive coupling. of the jaws. As a result, the pivot arm 15 captures the indexed plate 51 with it, although in other rotary positions relative to the movements between the two elements are possible. Unlike the second arm of the pivot 15, the double lever 19 is rotatably mounted on the eccentric shaft 48 and is connected in a rotatably fixed manner with the second pivot arm 15 through an additional coupling of the jaws (Figures 4 and 13). ). This coupling also has four jaws 55a-55d, which engage with each other. In contrast to the jaw engagement discussed above, here the jaws 55c, 55d of the double lever 19 have no play in the circumferential direction with respect to the jaws 55a, 55b of the pivot arm 15, thus providing a rotary connection fixed between the double lever 19 and the pivot arm 15 in all rotary positions. The rotary position of the double lever 19 on the eccentric shaft 48 is consequently determined via the hand lever 9 through the pivot arm 15 and the control board 14. The respective position of the hand lever 9 also has as consequence a position corresponding to the axis of the eccentric 48 with respect to the rotary axis 18 (Figures 3 and 4). The second rewind lock 6 is activated by a second rotary axis 56, which is mounted in the box 1 (Figures 1 and 8). For this purpose, a sleeve-like locking lever 58 of the second rewind latch 6 is disposed on a second eccentric shaft 57, which is aligned eccentrically with respect to the rotary shaft 56. The eccentric shaft 57 is integrally connected to the rotary shaft 56 The locking lever 58 and the eccentric shaft 57 can be connected to each other in a rotating fixed manner in certain rotary positions of the rotating shaft 56 through the contact of a tongue 58a of the locking lever 58 against an impeller 57a of the eccentric shaft 57 ( Figures 8-10). A fixed connection rotatably is shown in Figure 9 and in Figure 10 a constellation is shown in which there is no rotary connection between the locking lever 58 and the eccentric shaft 57. On the rotary shaft 56 there is also a sleeve, which is designed as a clamping lever 59. One of the two arms 60, 61 of the clamping lever 59 is guided in the grooved connection 17 of the flashing 16 coupled with pivoting to the control board 14 (Figure 3). A pivot lock 64 can act on the other arm 61 of the lock lever 59 and, in a locked position, secures the lock lever 59 against rotary movements in a counter-clockwise direction. Attached to the arm 61 of the clamp lever 59, for this purpose, there is a tension spring 62, with which the arm 61 is pressed against a fastener 64. The fastener 64 can instead be rotated out of its locking position. through a tab 65 of the control board 14, where the guiding lever 59 can be moved in both directions of rotation. A movement of the control board 14 introduced by the hand lever 9 leads among other things a rotary movement of the second rotating shaft 56, where the locking lever 58 executes an eccentric pivoting movement towards a rotary axis 56 (Figures 1, 3 and 8). ). Through this pivoting movement, a locking plate 66 engages in an articulated manner towards the locking lever 58, which can be depressed on a slope 67 of the first arm 11 of the base plate 7 or be raised again from the base. decline (Figures 9 and 10). In order to make a surface. Toothing 68 that presses 68 of the locking plate 66 is already aligned at least approximately parallel to the slope 67 at the moment of the first contact with the latter, the blocking plate 66 is loaded by a tension spring 69. In addition, the rotary movement carried out by the tension spring 69 is limited by a tongue 70 of the locking plate, which comes into contact with the locking lever 58 when the locking plate 66 has been raised from the slope. In order for the locking plate 66 to pass through the greatest possible acceleration during the descent in the direction of the base plate, and after the activation of the hand lever 9, clamp quickly the band with a high force clamping, before all the rotary accessories of the locking lever 58 with respect to the eccentric shaft 57 must be released. This is carried out through the fastener 64 releasing the clamp lever 59 (Figure 3). The negatively polarized tension of the spring 52 disposed on the clamp lever 59 then performs abrupt rotational movement of the clamp lever 59 and consequently also of the second rotary shaft 56 or eccentric shaft 57. As a result, the impeller 57a releases the tab 58a by this reason the negatively polarized tension spring 69 likewise then rotates the locking lever 58 on the eccentric shaft 57. The two rotary movements, which are carried out in the clockwise direction, ie a rotation of the eccentric shaft 57 around the rotating shaft 56 and a rotary movement of the locking lever 58 - and consequently relative - on the eccentric shaft 57 has the effect that the locking lever suffers a great acceleration in the direction of the base plate 7. The lever thus the treadmill comes from the position shown in Figure 9 towards the position shown in Figure 10, in which the plate loqueo 66 presses the band against the base plate. The arrangement of the impeller 57a of the tongue 58a and of the effective direction of the tension spring 69 (Figures 9 and 10) on one of the sides and the effective direction of the tension spring 62 as well as the length of the grooved joint 17 (FIG. 3) on the other side are matched to each other in such a way that the clamping lever 59 strikes against the flashing 16 at one of the ends of the slotted joint 17 shortly before the blocking plate touches the strip (Figures 9 and 10) . As a result, the rotary movement of the rotary shaft 56 is stopped and the tongue of the locking lever no longer lies against the driver 75a of the eccentric shaft 57. As a result, the locking lever 58 only rotates around the eccentric shaft 57 and presses inside the band. The tension spring 69 in this manner also has the effect that the pressing surface 68 is essentially aligned parallel to the slope of the base plate and the blocking plate presses its entire surface which presses the web from the first contact with the band. In Figures 16, 17, 18, part of a possible closing device according to the invention of the strapping apparatus is shown in a large schematic form. The closing device has a transmitting element in the form of an arc 80, in which a recessed cam 81 - with respect to the cam 77 (Fig. 1) - is mounted, where the recessed cam 81 is provided with a roller. The arc 80 is further coupled with pivoting on a rotating shaft 82 to the arm 11 of the base plate of the strapping apparatus. The arc 80, consequently serves inter alia to transmit a certain part of the pivoting movement of the lever 9 towards the closing device based on the principle of friction welding. Also mounted on the same rotating shaft 82 as well as the arch 80 is a support that extends approximately horizontally 83, which is supported by a compression spring 84 on the arm 11 of the base plate. Arranged on the support 83 is an electric motor 85, with which an oscillating movement of a welding shoe 86 is produced. The support 83 is provided with a seating point 90, towards which a one-piece lever is engaged in separate angle 91. In this case, a driving shaft 92 of the motor 85 is located between the rotary axis 82 and the seating point 90 for the lever 91, being possible for the three components to be arranged approximately in a line of attachment (imaginary) 87, as shown in Figure 16. The support 83 is supported against the arch 80 by an elastic spring element 93, preferably a cup spring assembly. One end 91a of the lever is designed as a fork, whose two arms form a slot 93 that is open at one end. Mounted in an articulated manner at the other end 91b of the lever 91 is the welding shoe 8.6. Lying on the fork of the lever 91 is a radial anti-friction seat, which is arranged on an eccentric element 94. The eccentric element is in this case mounted eccentrically on the shaft 92 of the motor and is provided with an essentially circular surface circumferential, in which an inner channel of an anti-friction seat is located. The anti-friction seat 94a lies with a circumferential surface 94b of its outer channel against the two arms of the fork. Represented in Figure 17, finally there is a recessed toothed plate 96, against which a layer of the web is pressed during the welding operation. As can be seen in Figures 16 and 17, the recessed plate 96 is disposed on the arm 11 of the base plate in such a way that it can be pivoted about an axis 97 running substantially transversely with respect to the longitudinal direction of the band in a closing device. In addition, the axis 97 runs orthogonally with respect to the pivot axis 86a of the welding shoe 86, which in turn is aligned essentially parallel to the longitudinal direction of the band 45. With the hand lever 9 and the cam 77 acting on the recessed cam 81 (see also Figure 1), the closure device can be taken from the insertion position, shown in the Figure 18, to the operating position, shown in Figure 16. During this movement, the support 83 is taken along through the arch 80 by the spring element 93. By means of a mechanism not shown in more detail, this movement of the hand lever 9 also activates the motor 85 of the closing device, where the eccentric element 94 starts to rotate. The eccentric element 94, rotating eccentrically in the fork, has an effect on an oscillatory pivoting movement of the lever 91 along an arc of a circle around the seating point. The welding shoe therefore performs an oscillatory movement in the same way, which is indicated by the arrow of two points 95. In order that the pressure required for the friction welding can be applied and the welding shoe is constantly in contact with the band, the spring element 93 is pressed into the support 83. As a result, the lifting of the welding shoe 86 can be prevented by reason of the arched pivoting movement of the lever can be avoided. The compression spring 84 serves to return the support 83 and opposes the spring element 93. Consequently, the eccentric movement component that runs approximately orthogonally with respect to the attachment line 87 is used to drive the welding shoe 86. The The component of the eccentric movement which is approximately parallel to the connecting line 87 is compensated for by the fork slot and does not lead to any movement in the lever 91. The pivoting arrangement of the entire closing device can have the effect that the band 45 can be inserted between the base plate and the welding shoe 86. Furthermore, it is also possible that in this form the different distances between the welding shoe 86 and the base plate 7 caused by the different thicknesses of the band. This design of closing device, and in particular, the coupling of the entire closing device to the rotating shaft 82 to the fixed position also has the effect that the entire closing device executes an oscillating movement during the welding phase. The "Welding Phase" is understas the phase in which two layers of a strip 45 are welded together. It has been shown that, with the welding device according to the invention, a particularly silent friction welding of the plastic bands is possible. In order to use the strapping apparatus according to the invention to place a loop of the band 46 around the g, sealing it and detaching it from the supply of the band, the apparatus must first be arranged with its base plate 7 on the g . In addition, the hand lever 9 must be located in a starting position, which corresponds to the intermediate position between the two end positions shown in Figure 2. In this position of the hand lever 9, a locking plate 71 of the first rewind latch 5 and of a recessed cutter 74 of the cutting device lies on the base plate. Unlike the representation of Figure 2, however, at this stage no band has been introduced into the strapping apparatus. The second and third rewind insurance 6. 20 are released at this point. In other words, the locking plate 66 of the second rewinding latch 6 is disposed in a position in which it is at the greatest distance from the base plate 7. In addition, the latch 44 (FIG. 5) of the third rewind latch it is not engaged with the ring gear 31 and the tension driver 2 has been lifted out of the oscillator 37. The welding device has also been raised from its arm 11 of the base plate 7. From this, ~ the lever of hand 9 is moved with pivoting into an end position, in which it lies in box 1 on the pivoting impeller (Figure 1). This first movement of the hand lever 9 is transmitted through the first pivot arm 13 to the control board 14. The control board 14 in turn fixes the second pivot arm 15. Since, in this position, the jaws 54b, 54d of the second pivot arm 15 are engaged with the jaws 54a, 54c of the indexed plate 51, the rotary movement is transmitted to the indexed plate 51 and, as a result, also to the rotary shaft 18. This movement of the rotary shaft 18, in turn, leads to the coupling (driving cams 46, 50) between the rotating shaft 18 and the first rewinding latch 5 which engages. As a result of this, the rotary movement of the rotary shaft 18 is transmitted to the rewind latch 5, where the locking plate 71 is raised from the base plate 7. Furthermore, as a result the cam 77 rotate 'along, with the hand lever 9, the built-in cutter 74 of the cutting device is also raised from the base plate 7, where a band guide of the strapping apparatus for the intersection of one end of the band 75 , it is fully released (Figure 1). From this, the band can be inserted inside the strapping device and placed around the goods. During this operation, a loop of the band 46 must pass through an opening 76 in the base plate 7 and placed in the apparatus such that both the end of the band 75 and an additional section of the loop of the band 46 they are under the rewind latch 6, while only the end of the band 75 which is disposed below the rewind latch 5 is extended. Subsequently, the hand lever is pivoted rearwardly within the intermediate position according to the Figures 2 and 3. Since the hand lever 9 is spring loaded, it is only necessary to release it for this purpose, where it assumes the intermediate position by itself. Through this movement of the hand lever 9, the axis of the eccentric 48 is rotated through the indexed plate 51 in a counter-clockwise direction (direction of rotation with respect to the representation of Figures 1 to 3) , wherein the first rewind lock 5 is lowered onto the arm 12 of the base plate 7 and the locking plate 71 is clamped at the beginning of the band 75 between this and the base plate 7. This movement of the lever This also leads to the effect that the cam 77, which is located on the rotary axis 10 of the hand lever 9, drives a control plate 78 of the cutting and closing device 3, 4. In the case of the the closure shown in Figures 16 to 18, the cam 77 operates the recessed cam 81. As a result of this the built-in cutter 74 is lowered on the web, while the state of the closing device remains unchanged. In addition, now at the end, the band 45 must also be inserted within the range between the tension wheel 30 and the recessed rollers 39, 40 of the oscillator 37 (cf Figures 5, 6, 7). In order to tension the band, then a tension button (not shown) of the hand lever 9 is activated, where the d.c. of the voltage driver 2 is started. The drive movement of the motor is transmitted through the planetary gear mechanism to the tension wheel 30, which - through a counterclockwise rotation movement - pulls the belt back in the direction ( arrow 43 in Figures 2 and 5) of a supply roll (not shown). The movement of the tension wheel stops when the observed voltage has been applied to the band so that the actual instantaneous current of the motor is compared to a starting point value of the current. When the starting point value is reached, the motor is turned off, the starting point value of the motor current corresponding to a certain desired starting point of band voltage of a particular type of band. During this tension phase, a rewind latch 5 is clamped to the end of the band. Furthermore, the fastener 28 is located in the position shown in Figure 6, in which it allows a rotational movement only in one direction of rotation of the ring gear 31, rotating contrary to the direction of the tension wheel 30. Since the The ring gear 31 is rotatably coupled to the tension wheel, which is thus secured against rotational movements contrary to the tension direction. The tension wheel can rotate accordingly at most 180 ° in the opposite direction to the direction of tension. Then at the end, the sear engages in one of the two depressions 35, 36 in the engagement of the ring 31. Once this tension phase has been completed, the hand lever 9 is transferred starting from the intermediate position (cf. Figure 2 and Figure 3) - in its second extreme position, which is shown in Figure 11. The movement of the control board 14 is initiated and as a result leads to the effect that the tab 65 of the control board 14 rotates the sear 64 out of its safe position, where the lever The fiat 59 is released from the rotary movements in a counter-clockwise direction. In the course of the movement of the hand lever 9 in the direction of its second end position, the flasher 16 can then rotate the clamp lever 59 in the counterclockwise direction (Figure 12). Unlike in the case of the movement of the hand lever 9 from the intermediate position towards the first end and back position, the guiding lever then lies at one end of the slotted joint 17 and engages through the cover 16 to the movement of the control board 14. Since the clamping lever 59 is connected in a rotational manner fixed to the rotating shaft 56, the movement of the clamping lever 59 leads to lowering the locking plate 66 in the direction of the base plate 7. where the rewind safety 6 clamps the band. As a result of the engagement of the blocking plate 66, described above, it is ensured that the blocking plate is essentially aligned parallel to the slope 67 of the base plate 7 from the first contact with the band and, as a result, the band It can be clamped very quickly. In the further course of the movement of the hand lever 9 in the direction of its second end position, the control board 14 is put in a position in which the second pivot arm 15 is positioned in such a way that the coupling between the pivot arm 15 and the double lever 19 are engaged. Until the hand lever 9 reaches its second end position, the second pivot arm 15 rotates the double lever 18 counterclockwise from the position shown in Figure 6 within the end position shown in FIG. Figure 7. As can be seen in Figure 6, the double lever 19 has no contact with the arm of the lever 24 of the second double lever 25 during the tension phase. Only in the course of the additional movement of the hand lever 9 one of the two arms 20, 21 are pressed against the arm of the lever 24. As a result, the latch 28 releases the ring gear 31. The third rewind latch, which acts on the tension wheel 30, is released accordingly. This has the effect that the tension of the previously applied band is essentially summarized by the section of the band between the tension wheel 30 and the second rewind lock 6. The tension of the band on the loop of the band is essentially located between the two rewind locks 5, 6 which, however, remain unchanged. Through a subsequent pivoting movement of the hand lever 9 in the direction of a second end position, the recessed cutter 74 is then activated and releases the loop of the band 46 of the band. Subsequently, the welding device joins the two ends of the band by friction welding. Both operations are initiated by the hand lever 9, whose movement is transmitted from the cam 77 to the control board 78, which in turn activates the built-in cutter and the welding device.

Both the cutting operation and the welding operation are considerably easier when releasing the section of the band that is directly affected by this.

Claims (8)

1. CLAIMS 1. A strapping device for strapping goods with a band, where the strapping device has a tension device which is operatively connected to a tension driver and has the intention of tensioning the band, a closing device for sealant the two ends of the band and a plurality of rewind locks for fixing the band in the strapping apparatus, characterized in that as an element for controlling the functions of the strapping apparatus is provided with an essentially plate-shaped control board (14) which is operatively connected to an actuator element, wherein a movement of the actuator element carries a pivoting movement of the control board (14), and the pivoting movement of the control board can be transmitted to a plurality of transmission elements which are coupled to the control board and with which the rewind locks (5, 6, 26) can be transferred from a blocking position to a posi insertion and vice versa.
2. 2. The strapping device according to the Claim 1, characterized in that at least one of the rewind locks, where a transmission element that is designed as a rotary shaft (18, 56), with which the rotary shaft (18, 56) in which by at least one rewind latch (5, 6, 26) can be actuated, wherein at least one coupling can be provided which operates the rewind latch (5, 6, 26) in certain rotary positions of the shaft and in other positions free it
3. 3. The strapping device according to one or both preceding claims, characterized in that the control board (14) has coupled thereto a rotating shaft (18, 56) with which a second rewind latch (5, 6). , 26) can be activated.
4. 4. The strapping device according to one or more of the preceding claims, characterized in that at least one of the rewind locks (5, ß, 26) is mounted on an eccentric shaft (48, 57) by a lever In this case, the eccentric shaft executes an eccentric movement with respect to at least that rotary axis, and in certain rotational positions of the rotating shaft with respect to the relatively rotary movements of the eccentric shaft can be executed through the locking lever.
5. 5. The strapping appliance according to one or more of the preceding claims, characterized in that the first part of the base plate (7) is assigned to a closing device (3) and a second part of the base plate is assigned. a passage is formed through the tension device and between the two parts of the base plate, through which the loop of the band can be guided.
6. The strapping apparatus, in particular according to one or more of the preceding claims, for packaging articles with strapping with a band, wherein the strapping apparatus has a tensioning device which is operatively connected to a tensioning device and is intended for for tensioning the band, wherein a locking device for sealing two ends of a band and at least one rewind lock for smoothing the band in the strapping apparatus, characterized in that a locking lever (58) of at least one safe Rewind (5, 6, 26) is mounted on an eccentric shaft (48, 57) which are connected to a rotary shaft and which is arranged eccentrically with respect to the rotary axis.
7. 7. The strapping device according to the Claim 6, characterized in that the locking lever can be connected in a rotary manner to the rotating shaft through a coupling and is arranged in a freely rotating manner on the eccentric shaft.
8. 8. The strapping apparatus, in particular according to one or more of the preceding claims, for strapping goods with a band, wherein the strapping apparatus has a tensioning device and is adapted to tension the strap, a closing device for sealing the straps. two ends of the band and at least one rewind lock to fix the band in the strapping apparatus, characterized in that through a gear mechanism of the tension device, which this mechanism has at least three stages of passage reducer. SUMMARY OF THE INVENTION A strapping apparatus for strapping goods with a band, which has a tensioning device and is intended to tension the band, a closing device for sealing the two ends of a band, and a plurality of rewind locks for Fix the band on the strapping device, which is as light in weight as possible while providing high functional reliability. It is therefore proposed that an essentially plate-shaped control board (14) which is operatively connected to an actuator element is provided as an element for control functions of the strapping apparatus, that a movement of the actuator element carries a pivoting movement of the control board (14), and that the pivoting movement of the control board can be transmitted to a plurality of transmission elements which are coupled to the control board, with which it is safe to rewind (5, 6, 26) they can be transferred from a blocking position to an insertion position and vice versa. With the solution according to the invention, the (gap) to control the functions of a strapping apparatus are only initiated from a control board, where the number of individual parts required can be reduced