DE202015009004U1 - Strapping device for securing a packaged goods - Google Patents

Abstract

A strapping device (101), in particular a mobile strapping device, for securing a packaged product with a tensioning device (105) and a joining device (111), wherein the tensioning device has a band contact surface and the joining device has a band holding surface, such that a strapping band (131) on a band side passes through the band holding surface fixable and the other band side through the band contact surface in a pulling direction (137) is transportable, so that the strapping is clamped, characterized in that the band contact surface is a component of the joining device and in the joining case, the strapping between the band holding surface and the band contact surface is.

Description

The invention relates to a strapping device, in particular a mobile Handumreifungsgerät, for securing a packaged goods with a clamping device and a joining device, wherein the clamping device has a band contact surface and the joining device a band holding surface, so that a strap on one band side fixed by the band holding surface and the other band side through the Band contact surface is transportable in a pulling direction, so that the strapping band is tensioned.

In the packaging industry, goods of various shapes and geometries must be secured together. An unambiguous securing of the packaged goods is applied by the mechanical tensioning of a strapping band, which should not sink significantly after a securing operation, for example due to the device removal.

Due to their previous design, this can only be guaranteed with flat-packaged goods in battery-operated strapping machines. In Handrareifungsgeräten of the prior art, in particular clamping unit and a welding unit are arranged one behind the other. This structure results in that there must be a minimum contact surface at which the strapping process takes place. A minimal bearing surface (distance between clamping and welding unit) is geometrically designed in such a way that virtually round packaged goods (for example several tubes) can not be securely fixed.

This minimum contact surface thus leads to a limitation of the possible applications, especially for non-flat packaged goods.

Hand strapping tools are especially in the EP0664256 A1 . EP0744343 B1 . EP 0981479 B1 . EP1413519 A1 . EP2132094 B1 such as WO 2009/129633 A1 . WO 2009/129635 A1 . WO 2009/129636 A1 . WO 2009/129637 A1 disclosed.

In the prior art, it has been proposed to reduce the minimum contact surface by locating the clamping unit at least partially in a non-strained region, so that the minimum contact length of the strained unit is reduced compared with the solutions described above. A disadvantage of this configuration is the complicated insertion of the strapping.

Such a solution is particularly in the DE 10 2009 041 608 A1 and in the EP0997377 A1 . EP0999132 A1 and EP0999133 A1 disclosed.

The object of the invention is to improve the state of the art.

This object is achieved by a strapping device, in particular mobile strapping device, for securing a packaged product with a clamping device and a joining device, wherein the clamping device has a band contact surface and the joining device a band holding surface, so that a strapping on one band side fixed by the band holding surface and the other band side the band contact surface is transportable in a pulling direction, so that the strapping is clamped, wherein the band contact surface is a component of the joining device and in the case of joining the strapping between the band holding surface and the band contact surface is.

Thus, a very compact mobile strapping tool can be provided, since the bearing surface is significantly reduced compared to the solutions of the prior art.

In addition, the insertion of the tape to secure the packaged goods can be easily configured, since only at one point, the joining of the tape takes place and accounts for separate Einfädelhandlungen.

The essential idea of the invention is based here on the fact that both the joining device and the clamping device are directly associated with each other and are separated essentially only by a gap, which is necessary for the insertion of the strapping. Thus, the joining device and the clamping device can form an integrated unit. Thus, the lowest contact surfaces can be realized, which only need to be designed sufficiently for friction welding in particular.

Furthermore, the essential idea of the invention is based on the fact that the tensioning device itself supports the deployment process when it is available and / or makes it possible to deploy it. This also makes the aspect of the integrated unit

Thus, with present strapping devices, it is now possible to secure packaged goods with strapping bands made of plastic, which have hitherto been secured with metal straps according to the prior art.

Due to the minimal design support surfaces smallest packages can also be secured with this strapping device. Also, a Rundumreifung (secure round packaged goods such as pipes) can thus be realized.

The following concept is explained:
The "strapping device" is in particular a mobile hand strapping device which or operated pneumatically. In such strapping especially strapping made of plastic (eg polypropylene or polyethylene terephthalate) are manually performed around a packaged and attached at the meeting of the ends of the strapping the strapping device and the device activated manually, so first a bracing of the strapping and then at a contact surface of the strapping Joining process takes place. In order to ensure continuous use, for example, the strapping device may have a replaceable battery, which provides the necessary energy for tensioning and disposing.

In this context, "mobile" should be understood in particular as meaning that the strapping device can be transported or moved to its place of use by the manual actuation of a person. The device dimensions of the present strapping device correspond to the commercially available drills or cordless screwdrivers, as used in the budget.

Under a "packaged goods" is understood in particular a good or good, which is secured for transport or space-saving arrangement. For example, such a packaged goods may be a carton, which in the unsecured state could easily rise during transport and thereby emit its contents into the environment. Also, in the present case pipes or other cylindrical packaged goods can be secured with such strapping. Especially in the case of tubes, these can occupy the densest packing and the correspondingly fixed strapping band ensures a defined arrangement of the individual tubes.

A "tensioning device" is in particular a device which moves in particular by train or other forces at least one side of the strapping. Of course, a transporting of the strapping at both ends in opposite directions, preferably one side is locked and only one side is transported.

So that the tensioning device can interact with the strapping band, the tensioning device has a "band contact surface". This band contact surface may be, for example, a rough surface with individual teeth which engage, for example, in the plastic of the strapping band and thus enable a coupling to the strapping band for the tensioning device.

The "joining device" causes the strapping with itself forms a firm connection and thus guarantees the necessary clamping effect or the spatial boundary of the strapping. The joining device can be a device which has the strapping band with itself by means of friction welding. In a friction welding, the two surfaces of the strapping are rubbed against each other in particular by means of an oscillating mechanical movement, so that due to the resulting heat effect of the plastic of the strapping partially liquefied and - after cooling - the strapping at the point of friction welding has entered into a firm connection. Other forms of joining such as sticking or clinging (for example with a metal sleeve) are also included.

A "band holding surface" is in particular a surface which firmly locks one side of the strapping band. This can likewise have a rough surface with teeth, with the teeth then in turn hooking into the plastic of the strapping band and thus preventing displacement parallel to the band holding surface.

A "strapping band" is in particular a plastic band, which is guided around a packaged goods and which is to be joined together at its ends. End in this context is in particular an open end and / or a future end, so that, for example, roll material can be used, wherein the remaining part is separated on the roll after disposing, so that then results in the second open end.

At this point, it should be noted that the present invention, goods that were previously secured with Metallumreifungsbändern, for the first time can be secured with Kunststoffumreifungsbändern, since the present strapping device can ensure both the sufficient forces and ability to work.

A "band side" of the strapping band corresponds in particular to an open end of the strapping band. The other "band side" of the strapping band to be seen in relation to this comprises, in particular, the part of the strapping band with which subsequently the balling takes place so that the two band sides are arranged with one another.

The "pulling direction" is in particular the direction in which the tensioning device transports at least one side of the belt.

By "bracing" is meant in particular the process that by applying a force of a strapping band forming a circle, a resulting radius of the strapping band reduced by the force or increases the clamping effect of the strapping.

In a further embodiment, the strapping device has a spacing device, which is set up such that a distance between the strap contact surface and the strap holding surface can be set between a strap insertion distance and a joining distance.

Thus, on the one hand, sufficient space can be provided between the belt holding surface and the belt contact surface in the case of the insertion of the belt and on the other hand, in the case of the joining case, the distance be reduced such that in particular a friction welding is feasible and the corresponding pressure on the enacting parts of the strapping band can be exercised.

A "spacing device" may, for example, be a flap device which, after unlocking, realizes opening, for example about a folding axis. On the other hand, a spacer device may additionally or alternatively comprise a motor device which, by reducing the distance of the strapping belt surfaces to be provided, applies sufficient force so that the friction welding is optimized.

In one embodiment, the spacing device is a flap unit and / or a press unit.

So that no unnecessary ends are present after the strapping band is available on the packaged goods and / or in order to separate a strapping band from a roll, the joining device is assigned a cutting device. This cutting device can in particular also be operated by a motor and comprise a blade which separates the arranged strapping by translation.

In a further embodiment, the joining device or the tensioning device has a mechanical oscillator which, in the case of joining, imparts a friction weld to the strapping band. In particular, by the mechanical oscillating movement of the mechanical oscillator and acting on the belt surfaces pressure sufficient frictional heat can be generated in the strapping, so that connect the corresponding parts together.

So that the strapping band, in particular a strapping band made of plastic, can be tensioned particularly effectively by the tensioning device and / or held by the joining device, the band holding surface and / or the band contact surface can have a toothing.

This toothing intervenes in particular in the plastic, so that an undefined slippage of the strapping band is prevented parallel to the belt holding surface and / or belt contact surface. The teeth can be designed as a kind of barb (teeth with different directional behavior) or particularly pointed. Cone and / or pyramid shapes are feasible. In general, the surface condition of the belt holding surface and / or belt contact surface can be designed such that a maximum of toothing with the strapping belt is realized.

In order to ensure the simplest possible realization of the clamping device, the clamping device may be equipped as a tensioning wheel with a Spannradradius, wherein the Bandkontaktflähe is arranged on a radial outer contour of the tensioning wheel.

Thus, a band side of the strapping band can be transported by rotation and thus imprint a force on the strapping band with the other band side held, so that the straining takes place.

In a related embodiment, the band holding surface on a radial formation, so that it compliments the radial outer contour of the tensioning wheel. This ensures optimum interaction between clamping device and joining device.

So that damage to the packaged goods can be avoided and / or thus the strapping band does not break, the tensioning device can be assigned a clamping force limiter. This Spannkraftbegrenzer can for example determine the torque on the motor which drives the tensioning wheel. If this torque exceeds a certain value, the engine can be switched off and made available.

This can be adjusted in an advantageous manner uniform clamping forces.

Thus, the strapping can be optimally inserted, the joining device may be associated with a feed unit. Such a feed unit may be, for example, a flat slope.

Furthermore, the invention will be explained with reference to an embodiment. Show it

1 a schematic sectional view of a packaged goods, which is secured by a strapping by means of a mobile Handrareifungsgeräts and

2 a schematic representation of the securing of pipes by means of Handrareifungsgeräts 1 ,

A mobile strapping tool 101 has a housing 103 , a tension wheel 105 with a tensioning wheel axle 107 and a welding unit 111 on. The tensioning wheel 105 rotates around the tensioning wheel axis 107 in the direction of rotation 109 the tensioning wheel 105 , The tensioning wheel 105 has on its peripheral surface (not shown) a toothed outer surface.

The welding unit 111 is a contact surface 113 assigned. The welding unit 111 also has on its outer surface single teeth, wherein the outer surface is so radially pronounced that it optimally the radius of the tensioning wheel 105 adapts.

Behind the tensioning wheel 105 and the welding unit 111 is the cutting knife 117 arranged. The welding unit 111 is associated with an eccentric, which in the direction of oscillation 119 (in and out of the picture plane in and out).

The tensioning wheel 105 is connected via a three-stage gearbox with a drive shaft of an engine (components not shown). The gearbox has two planetary gear stages and a spur gear ratio. The eccentric for impressing the oscillating movement is connected via a belt drive with the drive shaft of the motor.

The operation of the mobile strapping tool 101 is as follows.

For inserting a strapping band 131 in the hand strapping tool 101 becomes an upper part of the strapping tool 101 in the upper folding direction 121 and a lower part of the hand strapping tool 101 in the lower folding direction 123 emotional. Thus, the distance between the tensioning wheel increases 105 and the welding unit 111 ,

To a cuboid packaged goods 141 becomes a strapping band 131 made of PET, with a first end and thus the beginning of the plastic band 133 over the welding unit 111 and the cuboid packaged goods 141 around and above the strapping band 131 and below the tensioning wheel 105 with its plastic band end 135 guided.

Subsequently, the Handrareifungsgerät 101 folded again. By closing in the opposite folding direction around the Klapprotationsachse 115 be through the tensioning wheel 105 and the welding unit 111 the two ends of the strapping band 131 pressed against each other.

By manual operation of the motor (not shown) is the tensioning wheel 105 in the direction of rotation 109 the tensioning wheel turned so that the plastic tape end 135 in tension direction 137 is pulled. Since the plastic band beginning 133 through the teeth of the welder 111 hooked, the circumference of the strapping band becomes 130 reduced and thus clamped the cuboid Packgut.

As soon as a limit torque is exceeded, the motor stops the rotation of the tensioning wheel 105 and the welding unit 111 performs a mechanical oscillation in the direction 119 by. This results in a heating between the two belt components, which leads to a partial liquefaction of the plastic belt, which leads to a fixed connection after the completion of the mechanical oscillation. After joining, the cutting knife becomes 117 motor guided through the strapping, so that a cutting takes place.

Subsequently, the Handrareifungsgerät 101 turn around the Klapprotationsachse 115 in the upper folding direction 121 unfolded and pulled off to the side. The cuboid packaged goods 141 is from the strapped strap 131 secured.

Due to the small contact surface, as in 2 shown, round packaged goods also with the strapping tool 101 be secured. This will be tubes 251 stacked together and a plastic band 131 guided around the stacked tubes. In the upper area is the plastic band 131 in the hand strapping tool 101 merged. The tensioning wheel 105 tense the plastic band 131 so the pipes 251 take the densest form of packaging. Subsequently, again, the friction welding and the tape is by means of the cutting blade 117 shortened.

LIST OF REFERENCE NUMBERS

101

 strapping tool

103

 casing

105

 tensioning wheel

107

 Spannradachse

109

Rotation direction of the tensioning wheel 105

111

 welding unit

113

 approach surface

115

 Folding axis of rotation

117

 cutting blade

119

 oscillation

121

 Folding direction above

123

 Folding direction below

131

 Plastic tape

133

 Plastic strip start

135

 Plastic tape end

137

 tensioning direction

141

 cuboid packaged goods

251

 Tube

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0664256 A1 [0005]
• EP 0744343 B1 [0005]
• EP 0981479 B1 [0005]
• EP 1413519 A1 [0005]
• EP 2132094 B1 [0005]
• WO 2009/129633 A1 [0005]
• WO 2009/129635 A1 [0005]
• WO 2009/129636 A1 [0005]
• WO 2009/129637 A1 [0005]
• DE 102009041608 A1 [0007]
• EP 0997377 A1 [0007]
• EP 0999132 A1 [0007]
• EP 0999133 A1 [0007]

Claims (10)

Strapping device ( 101 ), in particular mobile hand strapping device, for securing a packaged goods with a tensioning device ( 105 ) and a joining device ( 111 ), wherein the clamping device has a band contact surface and the joining device has a band holding surface, so that a strapping band ( 131 ) can be fixed on one side of the strip by the strip holding surface and the other strip side by the strip contact surface in a pulling direction ( 137 ) is transportable, so that the strapping is clamped, characterized in that the band contact surface is a component of the joining device and in the case of joining the strapping band between the band holding surface and the band contact surface is. Strapping device according to claim 1, characterized in that the strapping device has a spacing device, which is arranged such that a distance between the strip contact surface of the strip holding surface between a Bandeinlegeabstand and a joining distance is adjustable. Strapping device according to claim 2, characterized in that the spacing device comprises a flap unit and / or a pressing unit. Strapping device according to one of the preceding claims, characterized in that the joining device is a cutting device ( 117 ) assigned. Strapping device according to one of the preceding claims, characterized in that the joining device and / or the tensioning device have a mechanical oscillator, which creates a friction welding the strapping in the case of joining. Strapping device according to one of the preceding claims, characterized in that the band holding surface and / or the band contact surface have a toothing. Strapping device according to one of the preceding claims, characterized in that the clamping device is designed as a tensioning wheel with a clamping wheel radius, wherein on a radial outer contour of the tensioning wheel, the band contact surface is arranged. Strapping device according to claim 7, characterized in that the strap holding surface has a radial shape, so that it complements the radial outer contour of the tensioning wheel. Strapping device according to one of the preceding claims, characterized in that the clamping device is assigned a clamping force limiter. Strapping device according to one of the preceding claims, characterized in that the joining device is a feed unit ( 113 ) assigned.

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