DE102007019534B3 - Cutting device for shortening component belts, feeding device and placement machine - Google Patents

Abstract

The cutting device (9) for shortening the component straps (11) must be characterized by a higher reliability. For this purpose, a cutting device (9) is shown, which via a housing (13), a belt channel (14) which is formed in the housing (13) for passing the to be shortened component belts (11) in a conveying direction (F), a Cutting device (12), which cuts through the component straps to be shortened transversely to its conveying direction (F), and a belt holding device (31) for fixing the component straps (11), which at least a first and a second clamping element (32, 33/36, 37) having facing clamping surfaces for clamping the component straps (11) has. The belt holding device (31) is designed such that the component straps (11) between the clamping elements (32 or 36, and 33 or 37) relative to the housing (13) are fixed in place.

Description

The The invention relates to a cutting device for shortening component belts, a feeder as well as a placement machine.

at a placement machine for loading of substrates with electrical components, the components through at the placement machine arranged feeding devices provided. The electrical components are often in pocket-like depressions a correspondingly long component belt magazined. The component belt is conveyed by means of a transport mechanism of the feeder by the feeder transported, with the components at a pick-up position of a placement of the placement machine be taken from the wells. The empty belt leaves the Feeding device on a suitable place. Often there is a need to empty the empty component straps after exiting from the feeder at certain intervals to cut to the residual waste into a manageable form. Repercussions on pick-up positions the components due to the cutting process lead to positioning inaccuracies and therefore to an impairment of the assembly process.

From the patent DE 19604608 For example, a cutting device for a placement machine is known, which extends over the entire width of the feeders arranged on the placement machine and cuts off the component strips by means of a single long and movable cutting knife. The cutting of the component straps by a scissor-like movement of the movable cutting blade against a correspondingly long formed cutting edge. In this cutting device, the component straps protrude with their loose end in the cutter. This can lead to disruptions such as the jamming of component straps between the cutting blade and the cutting edge, which can then lead to tearing on the straps and thus to changes in the position of the components at the unprotected pickup positions.

Furthermore, from the patent US 44 38 559 A a device for shortening of component belts, in which each component belt is individually fixed by means of its own clamping device between two clamping surfaces. By means of a cutting device, which has individual cutting blades, which are assigned individually to each clamping device, the respectively clamped component belt can be severed.

From the publication JP 2003-273578 A a cutting device 11 for shortening component belts with two rotating cutting knives is known, which are arranged transversely to the conveying direction of the component straps on the housing and partially overlap in the cutting area. The cutting blades are rotated relative to the housing via the movement of the cutting blade in rotation, the resulting rotational speed is significantly greater than the travel speed of the cutting blade. By means of two rollers 28 , which on the respectively assigned cutter shaft 21A and 21B sit, the component straps are pulled into the cutting device.

Furthermore, from the document JP 2006-237497 A a further cutting device with two rotating cutting knives known, which are also arranged on a housing transversely to the conveying direction of the component straps movable and partially overlap in the cutting area. To clamp the component straps are two rigid clamping elements 25 provided, which extend in the direction of travel and are movable transversely thereto, so that a component belt can be securely clamped therebetween. However, there are several component straps between the two clamping elements, it is possible that a thin component belt, which is located between two significantly thicker component straps, is not securely clamped, resulting in a tugging on the straps and thus to changes in the position of the components lead the unprotected pickup positions.

It Therefore, the object of the present invention is a cutting device for component straps to provide a higher Operating safety.

These Task is by the cutting device and the associated feeder and its associated placement solved according to the independent claims.

The cutting device for shortening the component straps according to claim 1 has a housing, a belt channel, which is formed in the housing for passing the component belts to be shortened in a conveying direction and a cutting device which cuts through the guided in the belt channel component belts transversely to its conveying direction. Furthermore, the cutting device has a belt holding device for fixing the component straps, which comprises at least a first and a second clamping element with mutually facing clamping surfaces for clamping the component straps, wherein the first clamping element is designed as a clamping belt. The cutting device is arranged in a transversely directed to the conveying direction displacement direction on the housing such that in the process of the cutting device ( 12 ) in the belt channel ( 14 ) guided component straps ( 11 ) transversely to its conveying direction (F) be severed. The belt-holding device acts in such a way with the cutting device, that the first clamping element moves in the process of the cutting device transversely to the direction of displacement on the second clamping element, so that the component straps between the clamping elements are fixed relative to the housing stationary. Such a configured cutting device has the advantage that caused by the cutting effects on the pickup positions of the feeders, for example, by snagging and tugging the cutter on the component straps on the component straps can be avoided the. For a higher reliability is feasible. Furthermore, such a cutting device can be arbitrarily adapted to the width of the belt channel and thus to the length of the travel path of the cutting device.

In an embodiment of the cutting device according to claim 2 the cutting device in addition a deflection device. The trained as a clamping belt first clamping element the belt-holding device extends in the direction of displacement over the entire travel distance of the cutting device, is about the Guided deflection and at its two ends so firmly anchored in the housing, that formed together with the second clamping element a catching area for the component straps is, which is to a range of action of the cutting device out rejuvenated. The effective range or contact area is the range the cutting device defined in which a guided in the belt channel Bauelementgurt is severed. Will a component belt from the capture area of the cutter detected and fed to the effective range of the cutting device, so be rejuvenated by the Catch area the pockets of the component straps compressed. With Help this schematic arrangement can also be component straps with deep pockets easily feed the cutter and then cut through.

at An embodiment of the cutting device according to claim 3 has the deflecting at least one rotatably mounted guide roller on. In contrast to a fixed deflection are included a rotatably mounted pulley significantly more favorable friction conditions in front. Furthermore, the rotatably mounted deflection roller is also used as a drive element for the Clamping belt usable.

In An embodiment of the cutting device according to claim 4 is the standing clamping belt by means of a so-called Ome ga-deflection by guided the cutter. By means of this omega belt guide can one as possible large diversion over the Drive roller can be achieved, which has corresponding advantages in the Power transmission with brings. Furthermore possible this kind of diversion is a cheap one geometric design for the catching area of the cutting device.

In an embodiment of the cutting device according to claim 6 has the cutting device on a deflection. Furthermore is the first clamping element of the belt holding device as at least one formed closed circumferential clamping belt, which over the Guided deflection and is movable with the cutting device. The revolving clamping belt is arranged such that between the clamping belt and the second Clamping a catch area is formed, which is the effective range the cutting device tapers. With the help of this configuration can also be component straps with deep pockets easily feed the cutter and cut.

at An embodiment of the cutting device according to claim 7 the clamping belt coupled to a drive such that the belt speed in the effective range of the cutting device, d. H. in the position of smallest distance of the clamping belt to the second clamping element, gegengleich the travel speed of the cutter is. Under the same is to understand that the two velocity vectors are oppositely directed and equal in terms of size. When the two vectors are added, the zero vector is obtained. Although the clamping belt is movable with the cutting device, is ensured by the coupling with the drive that the component straps not only between the clamping elements, but also relative to casing fixed in place. About that In addition, the belt holding device can thereby be kept compact and in the immediate vicinity the cutting device can be arranged.

According to one Embodiment of the cutting device according to claim 8 is the clamping belt so led, that both when moving the cutting device in the direction of displacement as well as in the opposite direction, the component straps fixed the effective range of Feedable cutting device are. It should be noted in particular that on both sides of the Cutting device a capture area between the clamping belt and is formed of the second clamping element. By means of this arrangement can the component straps both in the process of the cutting device in the direction of displacement and in one of the direction of displacement opposite directed opposite direction are severed. "Empty runs" of the cutting device back in their starting position are avoided.

In one embodiment of the cutting device according to claim 9 is also the second terminal Lement designed as a closed, circumferential clamping belt. The resulting advantages for the second clamping element corresponding to those of the first clamping element according to the statements to the claims 6 to 8.

In An embodiment of the cutting device according to claim 10 as a second clamping element a housing part the cutting device can be used. The capture area will therefore by the first clamping element, which as at least one stationary or circumferential clamping belt can be formed, as well as by the housing part formed as a second clamping element. This allows the mechanical complexity of the cutting device minimize, resulting in lower susceptibility to interference and thus leads to less maintenance.

at An embodiment of the cutting device according to claim 11 the clamping belts made of adhesive Material executed. This allows the non-positive Connection between the clamping belt and the component belt at Clamping the straps can be improved. Friction and slip effects between clamping belt and belt are thus avoided or minimized. Alternatively, it is also possible To perform the clamping belts made of a material with an abrasive surface.

In An embodiment of the cutting device according to claim 12 the deflection device formed transversely to the direction of displacement, so that the distance from the first to the second clamping element to the thickness the component straps independently is customizable. This can be done, for example, by a toughened Spring element can be realized. This will ensure that the cutting element especially with wide component straps with deep pockets, which are thicker even in a compressed state, can not be separated from the counter element. Even those thicker Component belts can thus be secured with the cutting device respectively. The prestressed spring element can, for example, as a spiral spring be educated. However, there are also other structural configurations as plate spring packages, electric or pneumatic solutions conceivable.

In An embodiment of the cutting device according to claim 13 comprises the cutting device a cutting unit which has a rotatably mounted cutting element having at least one circumferentially formed cutting edge, and a counter unit having a counter element. cutting unit and counter unit are arranged such that upon rotation the cutting element, the at least one cutting edge of the cutting element cooperate with the counter element in the so-called active or contact area, that in the process of the cutting device guided in the belt channel component straps across to their funding direction be severed.

A Such cutting device is characterized by its structural design arbitrarily to the width of the Gurtkanals and thus to the length of Traversing the cutting device customizable. Jamming the Component straps due to deflection of, for example, the cutting or bar knife is no longer possible in this case. This can a higher one Operational safety can be realized.

In an embodiment of the cutting device according to claim 14 the cutting element as a rotatably mounted roller blade with a formed on the circumference cutting edge and the counter element as rotatable mounted pressure roller formed with a trained on the periphery pressure surface. cutting unit and counter unit are arranged such that upon rotation of the rolling knife, the cutting edge of the roller blade on the pressure surface of Rolls off the pressure roller. By this configuration is a simple and cost-effective solution both in terms of manufacturing and maintenance feasible.

In an embodiment of the cutting device according to claim 15 has the cutting device on a biasing device, which the Roller knife and the pressure roller in a working position against each other prints, allowing the component straps by squeezing between Roller knife and pinch roller are separated. In the simplest Case, the biasing means realized by a compression spring become. Due to the fact that the component straps are squeezed and not like When cutting sheared, a jamming of the component straps locked out. Furthermore, the squeezing process essentially takes place without relative speed between the component belt and the cutting edge of the roller blade in the intersection. The formation of Gurtfasern, which can jam the knives, is not possible anymore. Also, the removal of microparticles, such as occurs when sawing, can be avoided. The crunching process is as good as No dust particles, so that pollution is minimized can, which is also to increase contributes to operational safety.

In an embodiment according to claim 16, the cutting element is designed as a rotatably mounted stamp wheel with two cutting edges formed on the circumference. The counter element has a likewise rotatably mounted die wheel with a recess formed on the circumference, in which the stamp wheel is at least partially immersed. In the simplest case, the stamp wheel has a cylindri nice shape. The recess may be formed as an annular groove. The width of the annular groove is to be chosen so that the dimensioned only slightly larger than the thickness of the stamp wheel. As a result, in the process of the cutting device, the punch wheel and the die wheel cooperate in such a way that the component belts are severed by a double cut at the two cutting edges of the cutting element. By this punching separation process, a piece is punched out of the component belt to be cut through, the width of which corresponds approximately to the width of the annular groove.

There the two cutting edges of the stamp wheel each have an angle of 90 °, injuries, as you can on a sharp cutting disc, for example in the frame maintenance can occur be avoided. For a better collection of the to be cut To achieve material in the cutting unit, the end face of the Stamp wheel riffled or knurled be executed.

In An embodiment of the cutting device according to claim 17 the cutting edge of the cutting element and the cooperating with the cutting element Areas of the counter element made of hardened material. Thereby becomes the wear behavior the tools improved, thus increasing the stability, which In turn, it has a positive effect on maintenance costs and operational safety effect.

To an embodiment of the cutting device according to claim 18, the Component belts when moving the cutter both in Displacement direction as well as in one of the displacement direction opposite Be severed opposite direction. An "empty run" of the cutter, i.e. a Move back to the starting position is not necessary, what the process security as well as significantly increasing the efficiency of the cutting process. Farther can Malfunctions for example, by tangling or jamming the to be shortened Component straps are avoided in the mechanics of the cutting device, which also improves the process security as well the stability of the cutting device contributes.

A The embodiment of the cutting device according to claim 19 further comprises a linear drive, with the help of the cutting device in the displacement direction or in the opposite direction is movable, and a rotary drive for the cutting element. In this case, the rotary drive is so with the linear drive coupled, that the peripheral speed of the at least one Cutting edge of the cutting element in the contact area with the counter element is equal to the travel speed of the cutting device. By this arrangement, a nearly relatively speed-free Crushing or cutting process be realized so that the component straps cut clean can be. About that In addition, less polluting microparticles or belt fibers occur on.

To An embodiment of the cutting device according to claim 20 comprises the rotary drive a rack, which on the housing is provided and extends in the direction of displacement, a gear, which meshes with the rack and a shaft through the gear is connected to the cutting element such that at Method of cutting the cutting element in rotation is offset. Alternatively, it is also possible instead of a rack a toothed belt on the housing to attach and use a pulley instead of a gear, which is engaged with the timing belt and with the cutting element is connected in such a way that it is set in rotation.

By This structural design can be a structurally simple mechanical Rotary drive for the cutting element can be realized. It is still with choice a suitable transmission ratio possible, by separating the component straps between the at least one Cutting edge of the cutting element and the contact area of the counter element essentially relatively free of speed to realize. One suitable transmission ratio is For example, if the effective circle diameter of the gear equal corresponds to the diameter of the cutting element. Such a design Mechanical rotary drive has the advantage that neither a power supply another control needed become. Last but not least, it is a question of maintenance and maintenance robust solution ideally suited for one continuous use in the production environment.

A The embodiment of the cutting device according to claim 21 further comprises a linear drive, with the help of the cutting device in the displacement direction or in the opposite direction is movable, and a rotary drive for the counter element. In this case, the rotary drive is so with the linear drive coupled, the peripheral speed of the counter element in the Contact area with the at least one cutting edge of the cutting element is equal to the travel speed of the cutting device. With regard to the advantages of this embodiment is based on the comments refer to claim 19.

In one embodiment of the cutting device according to claim 22, the rotary drive has a rack, which is provided on the housing and extending in the direction of displacement, a toothed wheel, which is in engagement with the rack and a shaft through which the gear is connected to the counter element such that when moving the cutter in the direction of displacement, the counter element is set in rotation on. Alternatively, it is also possible to provide a toothed belt instead of a rack on the housing and to use a pulley instead of a gear, which is in engagement with the toothed belt and is connected to the Konterele element such that it is set in rotation.

By this structural design allows the rotary drive easy robust and cost-effective realize. Furthermore, when choosing a suitable transmission ratio a nearly relatively speed-free crushing or cutting process easy realizable. A suitable gear ratio is For example, then, if the effective circle diameter of the gear corresponds to the diameter of the counter element in the contact area.

To Claim 23 is claimed a cutting device in which the Cutting device is designed such that the cutting unit and the counter unit relative to each other between a working position the cutting device, wherein the cutting element and the counter element interact and a securing position, where the cutting element is separated from the counter element, are mounted displaceably. Farther a securing mechanism is provided, which is designed in such a way is that when crossing a maximum force occurring during the cutting operation, the cutting unit is separated from the counter unit. This can be done, for example Swiveling out of the separating element can be realized and is z. B. then necessary if components that are not picked up in their pick-up position from the placement head were and remained in the belt pockets, in the engagement area get the cutter. In this case, the cutting device when trying to straps with the components therein to be cut, moved to the safety position to damage at the cutting device, especially at the at least one cutting edge of the cutting element.

Farther is destroying of tantalum capacitors remaining in the pockets of the component straps absolutely to avoid. Released and finely divided tantalum reacts with the ambient air and can cause burns lead under strong heat. These risks are determined by the procedure of the cutting device in the hedging position. However, it is also possible, any Obstacles over to detect the current consumption of the motor and the cutting process electrically controlled to interrupt.

The Cutting device according to claim 24 shows a belt channel, which at both ends in the direction of displacement and / or opposite direction return mechanisms having. These serve to cut the cutter from the securing position back to transfer to the working position. This can be a in the safety position located cutting device at the end each travel distance brought back to the working position become. An intervention of the machine operator is not necessary.

To Claim 25 are the return mechanisms the cutting device designed as a double-sided inlet slopes. The transfer of the cutting device from the securing position in the working position is by means of the inlet slopes with the lowest possible constructive effort feasible.

According to claim 26 is a feeder for electrical Components that are provided in component belts and to a Pick-up position of a placement machine transported, claimed. This feeding device has a Cutting device as described in the above claims. The resulting advantages are the comments on the above claims to remove.

To Claim is a placement machine for equip of substrates with electrical components, which is a cutting device according to one of the above claims has claimed. To the resulting advantages will also be on the execution to the above claims.

in the The invention will be explained in more detail below with reference to the attached figures.

In the figures are

1 a schematic representation of a placement machine,

2 a schematic section through the feeder and the adjacent cutting device in the conveying direction of the component straps,

3 a schematic section through cutting device transverse to the conveying direction of the component straps,

4 a schematic representation of the cutting device,

5A . 5B Embodiments of the rotary drive,

6 a schematic representation of a belt holding device with circumferential clamping belt,

7 a schematic representation of a belt holding device with a stationary clamping belt,

8th a schematic representation of a belt support device with upright clamping belt in omega arrangement,

9 a schematic representation of a prestressed spring element,

10 a schematic representation of the working position and the securing position of the cutting device.

1 schematically shows a placement machine 1 for loading substrates 2 with components 3 , The placement machine consists of a cross member 7 which extends in a y-direction and is fixedly connected to the machine frame. At the cross member 7 is a portal arm 8th attached, which extends in the x direction and displaceable in the y direction on the cross member 7 is attached. At the portal arm 8th is the placement head 6 slidably mounted in the x direction. Wei terhin is a transport route 4 for transporting the substrates 2 intended for a placement position. Next to the transport route 4 are near the placement feeders 5 arranged at their defined pickup positions 10 the electrical components 3 in component straps 11 to be provided. Between the feeders 5 and the transport route 4 is a cutting device 9 for shortening the empty component straps 11 arranged.

For loading the substrates 2 These are over the transport route 4 transported to their placement position. The from the feeders 5 provided electrical components 3 be from the placement head 6 picked up and on the substrate 2 positioned. The empty component straps 11 be from the feeders 5 led out and the cutting device 9 fed.

In 2 is a section (AA in 1 ) by the feeder 5 as well as the adjacent cutting device 9 shown schematically. The feeder 5 consists of a transport wheel 16 , Which has transport pins in the radial direction on the circumference. About the transport wheel 16 becomes the component belt 11 led, in its pocket-like depressions 17 the electrical components 3 are magazinated. At the pick-up position 10 You can use the components with the help of a pipette 15 of the placement head 6 be removed. Adjacent to the feeder 5 is the cutting device 9 arranged. This consists of a housing 13 in which a belt channel 14 is formed, and a cutting device 12 for shortening the component straps 11 ,

By rotation of the transport wheel 16 transports the feeder 5 in the pocket-like depressions 17 of the component belt 11 lying components 3 in a conveying direction F to the picking position 10 , There are the components 3 from a pipette 15 of the placement head 6 taken. After removal of a component 3 becomes the component belt 11 through a transport wheel 16 the feeder 5 further promoted by a defined distance, so that the subsequent component 3 at the pick-up position 10 located and can be picked up. The emptied component belt 11 is further transported in the conveying direction F and in the belt channel 14 , initiated. At the opposite opening of the belt channel 14 is a cutting device 12 transversely mounted to the conveying direction F movable. The cutting device moves at regular intervals 12 transverse to the conveying direction F and severed from the belt channel 14 outstanding component straps 11 ,

3 shows a schematic section (BB in 1 ) through the cutting device 9 transverse to the conveying direction F of the component straps 11 , At the housing 13 the cutting device 9 are on both sides of the belt channel 14 linear guides 18 attached, with the help of the cutting device 12 can be moved both in a direction of displacement V and in a reverse direction G.

The out of the case 13 trained belt channel 14 outstanding component straps 11 be in the process of the cutting device 12 severed by this. The cut-off component straps 11 are collected by a collecting container, not shown in the drawing.

In 4 is the kinematics of the cutting device 12 shown schematically. The cutting device 12 consists essentially of the cutting unit 19 and the counter unit 23 , The cutting unit 19 has a cutting element 20 with a circumferentially formed cutting edge 21 on which one on a wave 22 is rotatably mounted and one on the housing 13 the cutting device 9 attached linear guide 18 transverse to the conveying direction F of the component straps 11 is displaceable. The counter unit 23 has a counter element 24 on which is on the counter shaft 26 is rotatably mounted and also one on the housing 13 attached linear guide 18 transversely to the conveying direction F is displaceable. Further shows 4 two more component belts 11 one of which is already cut off; the other is still from the cutting device 12 severed and protrudes from the belt channel 14 out.

With the help of a compression spring 27 becomes the contact surface 25 of the counter element 24 , in this presentation as a pressure roller 124 is formed, frictionally against the cutting edge 21 of the cutting element 20 which is in 4 as a roller knife 120 is shown, pressed. Turns the roller blade 120 , so also automatically the pressure roller 124 co-rotated in the opposite direction. Conversely, when rotating the pressure roller 124 also the roller knife 20 is set in an opposite rotation. Will now the cutter 12 moved in the direction of displacement V or in the opposite direction G, so can via a rotary drive 28 (not shown) the roller blade 20 and the pressure roller 24 be set in rotation.

The direction of rotation is chosen so that the to be shortened component straps 11 in the engagement region of the cutting device 12 be involved. Ideally, the rotational speed is adjusted so that the rotational speed of the cutting edge 21 of the roller blade 120 at the contact point with the pressure surface 125 the pressure roller 124 exactly opposite the same size of the linear velocity V of the cutting device 12 is. If the two velocity vectors are oppositely directed and of equal magnitude, ie "equal to each other", then the vector of vectors results in the zero vector 11 between the cutting edge of the roller blade 120 and the component strap to be separated 11 almost no relative speed occurs. The component straps 11 are the squeezing cut by the "relatively speed" unwinding of the cutting edge 21 of the roller blade 120 on the pressing surface 125 capstan 124 pulled the trigger. In the direction of travel V or in the opposite direction G of the cutting device, no relative speed occurs, ie no relative movement between the component belt 11 and the roller knife 120 , on. The necessary for the squeezing surface pressure is thereby by the compression spring 27 applied.

For the functionality of the cutting device 12 it is irrelevant whether the roller blade 120 or the pinch roller 124 with the rotary drive 28 is coupled, since the not directly driven via the rotary drive element frictionally on the bias of the compression spring 27 is driven with.

in the Difference to the cutting sawing method, in which by moving the tool, the cutting teeth in the Schneidgutkörper penetrate, and thinner by ablation Chips one Groove in the body is incorporated, which ultimately leads to the separation finds no material removal takes place during the squeezing cut. The education of dust particles, which lead to contamination of the machine and therefore have to be removed again is minimized. The maintenance effort can be reduced. Compared with the shear cutting, in which the material to be cut through two cutting edges moving past each other initially plastically deformed and finally is separated, is crushing in spite of plastic deformation the material jamming the material to be cut between the cutting edges locked out.

5a shows a possible embodiment of the rotary drive 28 for the cutting device 12 for the crushing cut by means of roller blade and pressure roller. The rotary drive 28 has a rack 30 on, which extends in the direction of displacement V and the housing 13 the cutting device 9 attached, as well as a gear 29 which is in the rack 30 engages and on the shaft 22 is attached. Between the cutting unit 19 and the housing 13 is a linear guide 18 educated.

Will the cutter 12 moves in the direction of displacement V or in the opposite direction G, so the gear rolls 29 over the rack 30 off and offset over the shaft 22 the roller knife 120 in rotation. By the over the bias by the compression spring 27 applied adhesion with the pressure roller 124 this is also powered with.

In order to realize the appropriate for the "relatively speed" unwinding rotational speed, the effective circle diameter of the gear 29 so choose that it matches the diameter of the roller blade 120 equivalent. As a result, the translational movement of the cutting device can be easily achieved 12 with a gear ratio of 1 in a rotational movement of the roller blade 120 transferred so that at the contact point of the roller blade 120 with the pressure roller 124 the peripheral speed of the cutting edge 21 of the roller blade 120 exactly opposite the same size of the linear velocity V of the cutting device 12 is.

5b shows that already too 5a described embodiment of the rotary drive for the cutting device 12 but not for the squeezing cut, but for the punching cut, with the cutting element 20 as a stamp wheel 220 and the counter element 24 as a die wheel 224 are formed. The stamp wheel 220 has for this purpose a disc-shaped base body with two cutting edges formed on the circumference 21 on. The die wheel also consists of a disk-shaped base body and further has a pronounced annular groove on the circumference. As in 5a shown, has the rotary actuator 28 but a toothed rack ge 30 , which extends in the direction of displacement V and the housing 13 the cutting device 9 attached, as well as via a gear 29 which is in the rack 30 engages and on the shaft 22 is attached. As a result, upon movement of the cutting device 12 in the direction of displacement V or in the opposite direction G, the stamp wheel 220 set in rotation. Stempelrad 220 and die wheel 224 are arranged in such a way to each other that the punch wheel 220 at least partially in the annular groove of the die wheel 224 dips. Also in this case, a quasi relatively speed-free "rolling" by appropriate dimensioning of the effective circle diameter of the gear 29 will be realized.

In contrast to the crushing cut, the material to be cut is not compressed during punching cutting, but over the two cutting edges 21 of the stamp wheel 220 in cooperation with the die wheel 224 stretched. It is irrelevant whether the die wheel is driven: a separate drive is of course possible, but not necessary.

In both cases, both for the crimping and the punching cut, it is also possible to use a correspondingly translated, mechanical transmission or an electric drive with a corresponding synchronization. In principle it is also possible to use the rotary drive 28 with the counter element 24 instead of the cutting element 20 to synchronize.

By These constructive embodiments can be a relativgeschwindigkeitsfreies Cutting easy and inexpensive realize.

In 6 is a belt holding device 31 shown schematically. As clamping elements are a first and a second rotating clamping belt 36 and 37 shown. The first circulating clamping belt 36 sits on the cutting unit 19 and will handle this. He is going over the main body of the cutting element 20 , if possible in the immediate vicinity of the cutting edge 21 , as well as two diverters, here as pulleys 38 are executed, led. The second clamping belt 37 is on the counter unit 23 arranged and movable with this. He is going over the peripheral surface 25 of the counter element 24 as well as two pulleys 38 guided. Both the cutting unit 19 as well as the counter unit 23 be over on the housing 13 the cutting device 9 mounted linear guides 18 guided. In the engagement area between cutting element 20 and counter element 24 is to ensure that the at least the first clamping belt 36 can yield in the z-direction, not to the cutting unit 19 from the counter unit 23 withdraw. This can be realized, for example, by the main body of the cutting element 20 at least at the contact surfaces with the first clamping belt 36 has a layer of hard foam or sponge rubber, with thick component straps 11 can yield accordingly. Alternatively, the first clamping belt 36 instead of over the main body of the cutting element 20 also over one of the cutting element 20 separate, resiliently mounted in the z-direction deflection pulley 34 be guided.

By coupling the first clamping belt 36 with the main body of the cutting element 20 becomes when the cutting element rotates 20 also the first clamping belt 36 with powered. The cutting element 20 can do this with the rotary actuator 28 be coupled, so that it in the process of the cutting unit 19 in the direction of displacement V can be set in rotation. The to the counter unit 23 belonging and over the peripheral surface 25 the counter unit 24 guided second clamping belt 37 does not have its own drive, but is made by frictional connection with the first clamping belt 36 with powered. However, it is also possible, the pressure roller 24 with its own rotary drive 28 ' to provide, but then - as well as the rotary drive 28 of the cutting element 20 - With the linear drive of the cutting device 12 must be synchronized.

Between the mutually facing belt surfaces of the two clamping elements 36 and 37 can the to be shortened component straps 11 clamped and relative to the housing 13 fixed in place. Moves the cutter 12 to the left, the two clamping belts move 36 and 37 in the contact area between cutting element 20 and counter element 24 relative to the cutting device 12 with appropriate translation at the same speed in the opposite direction to the right. Relative to the housing 13 the cutting device 9 have the two clamping belts 36 and 37 in the contact area therefore the speed zero. This can be from the belt channel 14 projecting component straps 11 relative to the housing 13 fix in place. Pulling and tugging on the component straps, which can lead to positional inaccuracies at the removal position, is thereby avoided.

The geometric guidance of the clamping belts 36 and 37 is through the pulleys 38 accomplished. The guiding geometry of the clamping belts 36 and 37 is designed such that between the two clamping belt 36 and 37 a catching area arises, which on both sides of the effective area between the cutting element 20 and the counter element 24 rejuvenated. In this case, the region of the cutting unit in which the at least one cutting edge of the cutting element cooperates with the counter element in such a way that the component belt is severed is defined as the effective region. By the design of the catching area become in the process of cutting device 12 the pocket-like depressions 17 from the belt channel 14 standing component straps 11 from the two standing clamping belts 32 and 33 compressed, which facilitates the cutting process in both the squeezing and the punching cutting.

Becomes a component 3 at his pick-up position 10 not from the placement head 6 picked up and remains even when weiterertakten the component belt 11 in the pocket-like depression 17 So this could be done while trying to design the component strap 11 cut at this point, damage to the cutting element 20 , especially at the cutting edge 21 of the roller blade 120 to lead. Therefore, the attachment mechanism of the compression spring 27 designed so that when exceeding a certain limit force in the z direction, the cutting unit 19 from the counter unit 23 is disconnected.

With the help of in 6 shown belt support device 31 let the component straps 11 relative to the housing 13 Fixed fixed the cutter 12 feed and cut safely. Due to the symmetrical design of the cutting device 12 as well as the belt support device 31 is it possible to use the component straps 11 both cut when moving the cutting device in the direction of displacement V, as well as in the opposite direction G safely. It is also possible to form only a clamping element of rotating clamping belt and as a second clamping element, for example, a housing part of the cutting device 9 to use. Regarding the advantages of the "relative speed-free" separation of the component straps 11 will apply to the comments 5 directed.

7 schematically shows a belt holding device with stationary clamping elements, which in turn are designed here as a clamping belt. Under a standing clamping element or a stationary clamping belt is understood a clamping element which is not movable with the cutting device, but is anchored stationary relative to the housing.

A first standing clamping belt 32 is doing over a deflection plate 34 led, which leads to the cutting unit 19 heard and on the wave 22 in the immediate vicinity of the cutting element 20 which is here as a roller knife 120 is trained, sits. A second stationary clamping belt 33 is via a deflection surface 35 , which on the cylindrical outer surface of the counter element 24 , here the pinch roller 124 , is formed, guided (see section DD). In contrast to the rotating clamping belts 36 and 37 , which works together with the cutting device 12 are movable, are the standing clamping belt 32 and 33 at their ends in the housing 13 the cutting device 9 attached.

To realize this arrangement, the radius of the deflection plate 34 It should be chosen so that it is slightly, approximately to the thickness of the clamping belt 32 , less than the radius of the roller blade 20 , To lift the cutting unit 19 from the counter unit 23 to avoid and the cutting device 12 to the different thickness component straps 11 can adapt to the deflection pulley 34 either spring-mounted in the z-direction, or in the area of contact surface with the clamping belt have a resilient elastic layer of sponge rubber or hard foam.

Because the clamping belt 32 is firmly anchored in the housing, rolls when moving the cutter 12 in the direction of displacement V or in the opposite direction G via the shaft 22 rotatably mounted deflection pulley 34 on the standing clamping belt 32 from. Also the radius of the pressure roller 124 trained deflection 35 , over which the second standing clamping belt is guided, should be chosen so that it is slightly, approximately to the thickness of the clamping belt 33 , smaller than the radius of the pressure roller 124 trained pressure surface 125 , Thus, when moving the cutter rolls 12 in the direction of displacement V or in the opposite direction G, the deflection 35 the pressure roller 124 on the standing clamping belt 33 from. The Kinimatik shown by the non-positive connections between the first stationary clamping belt 32 and the deflection pulley 34 or the second stationary clamping belt 33 and the deflection 35 the pressure roller 124 or the two clamping belts 32 and 33 feasible with each other. It makes sense, however, the wave 22 or the counter shaft 26 with the help of an additional rotary drive to drive.

In the sectional view too 7 is a possible embodiment of such a rotary drive 28 to see: the gear 29 is stuck with the shaft 22 connected and rolls when moving the cutting unit 19 on the case 13 attached rack 30 from. The effective circle diameter of the gear 29 is to be chosen so that it corresponds to the diameter of the cutting edge 21 of the roller blade 120 equivalent. As well as the deflection pulley 34 as well as the roller knife 120 stuck on the shaft 22 sit, this positive connection leads to a precisely defined, slip-free rolling motion of the roller blade 20 , It is also possible, alternatively or in addition to the shaft 22 also the counter-wave 26 to synchronize with a rotary drive.

By choosing the anchoring points of the clamping belts 32 and 33 in the case 13 and the dimensioning of the roller blade 120 and the capstan 124 becomes the geometric position of the standing clamping belts 32 and 33 established. It is from the two standing clamping belt 32 and 33 formed a capture area, which on both sides of the effective range, where the cutting edge 21 of the roller blade 120 pushes into the component belt and cuts it, between the roller blade 120 and the pressure roller 124 rejuvenated. The pocket-like depressions 17 from the belt channel 14 projecting component straps 11 become characterized in the process of the cutting device 12 from the two clamping belts 36 and 37 pressed together. Furthermore, the compressed component straps 11 stationary relative to the housing 13 fixes the effective range of the cutting device 12 between the roller blade 120 and the pressure roller 124 supplied so that they are severed safely with a squeezing cut.

Becomes a component 3 at his pick-up position 10 not from the placement head 6 picked up and remains even when weiterertakten the component belt 11 in the pocket-like depression 17 So this could be done while trying to design the component strap 11 to cut at this point, damage to the roller blade 120 to lead. Therefore, the attachment mechanism of the compression spring 27 designed so that when exceeding a certain limit force in the z direction, the cutting unit 19 from the counter unit 23 is disconnected. This will also over the deflection 34 , which with the cutting unit 19 is connected, or the deflection 35 the one with the counter unit 23 connected pinch roller 124 Guided, standing clamping belt 32 and 33 separated.

Due to the quasi-symmetrical design of the cutting device 12 as well as the belt support device 31 is guaranteed that the component straps 11 both in the process of the cutting device in the direction of displacement V and in the opposite direction G are sure to be severed. However, it is also possible to form only one clamping element as a stationary clamping belt and as a second clamping element, for example a housing part of the cutting device 9 to use.

In principle, a belt holding device with standing clamping elements is also suitable for the cutting body pairing stamp wheel 220 / die wheel 224 , which is not shown specifically.

In 8th is a belt holding device 31 with a standing clamping belt in omega arrangement 40 shown schematically. The one in the case 13 at one end with the help of a tension roller 39 Fixed clamping belt serves as the first clamping element and is over at least 5 guide rollers 38 led, so that approximately the shape of the Greek letter Omega results. The pulleys 38 are rotatable on a support (in the sectional drawing of the 8th not shown), which is connected to the cutting unit 19 the cutting device 12 is movable. Together with the cutting unit 19 also moves the counter unit 23 on which the counter element 24 is rotatably mounted. As a second clamping element, the wall of the housing acts 13 the cutting device 9 ,

Moves the cutter 12 with the cutting element 20 and the counter element 24 in the direction of displacement V or in the opposite direction G via the belt channel 14 , so is the standing clamping belt 40 over the pulleys 38 through the Schneidein unit 19 pulled and against the wall of the case 13 pressed. The at least one cutting edge 21 of the cutting element 20 rolls in contact with the peripheral surface 25 of the counter element 24 on this.

Due to the geometry of the belt guide is on both sides of this contact area of the wall of the housing 13 and the standing clamping belt 40 a catch area formed. Unlike the in 7 The solution shown remains the geometry of the capture area over the travel distance of the cutting device 12 unchanged, the opening angle does not change due to the omega guide of the belt.

Through this constructive design of the belt support device 31 become the component belts to be shortened 11 against the wall of the housing 13 pressed and fixed there until it passes through a squeezing or punching cut between the cutting element 20 and the counter element 24 be separated. Disturbing repercussions on pick-up positions 10 the electrical components 3 Such as vibrations and other movements of the component straps 11 leading to changes in the position of the components 3 at the pick-up positions 10 could lead - by fixing the component straps 11 be avoided.

9 shows a prestressed spring element 43 , shown here as a spiral spring. The spring element 43 is the counter unit 23 attributable and serves the independent adjustment of the belt support device 31 to the thickness of the compressed component straps 11 , The peripheral surface 25 of the counter element 24 is relative to the rest of the counter unit 23 Slidably mounted in the z-direction, so that the distance of the pressure surface 25 the pressure roller 24 to the deflection pulley 34 can be varied slightly. This is necessary because the component straps 11 depending on the size of the pocket-like depressions 17 may have a different thickness in the compressed state.

By the spring element 43 which is with nem one end to the storage of the counter element 24 and with the other end on the carrier of the counter unit 23 is attached, the two clamping belts 36 and 37 that over the peripheral surface 25 of the counter element 24 or over the deflection 35 the deflection pulley 34 be led, pressed against each other. In the case of thicker component straps 11 becomes the spring element 43 by the force which the component straps 11 in the z direction on the clamping belt and thus also on the storage of the counter element 24 exercise, accordingly more compressed than with a thin component belt 11 the case would be.

By using this preloaded spring element and thicker component straps 11 be securely clamped. Instead of coil springs and other structural configurations for the spring element, such as cup spring packages can be used.

In 10 is the cutting device 12 in the two positions "working position" and "securing position" shown schematically. The cutting device 12 is together with the belt support device 31 over the belt channel 14 (not shown) arranged displaceably in the x direction. In the working position, the cutting unit acts 19 with the counter unit 23 together, the at least one cutting edge 21 of the cutting element 20 stands with the counter element 24 in contact. The two clamping elements, here as rotating clamping belts 36 and 37 shown are pressed together. In the safety position are cutting unit 19 and counter unit 23 separated from each other, wherein the clamping elements are separated from each other.

Such a separation may become necessary when an electrical component 3 at his pick-up position 10 not from the placement head 6 is picked up and while indexing the component belt 11 in the pocket-like depression 17 remains.

When trying the component strap 11 To cut at this point, it could damage the at least one cutting edge 21 of the cutting element 20 come. Threatens an electrical component 3 during the cutting process between cutting element 20 and counter element 24 to be guessed, so when trying, the device 3 between the two clamping belts 36 and 37 to clamp, a certain limit force is exceeded in the z-direction, causing the cutting unit 19 from the counter unit 23 is disconnected.

This is the Andrückmechanismus 42 for the counter element 24 in the z-direction relative to the cutting device 12 moved from the work item to the save position. The in the construction belt 11 remaining component 3 is thus not damaged, the belt is not severed. The cutting device 12 remains for the rest of the route over the belt channel 14 in the hedging position; to be passed component belts 11 are also not severed. It is also possible, the cutting element 20 instead of the counter element 24 with the pressure mechanism 42 to be coupled and moved from the working position to the safety position.

In the direction of displacement V and in the opposite direction G are at both ends of the belt channel 14 on the housing 13 the cutting device 9 inlet slopes 44 educated. Moves the counter unit 23 in the securing position over the belt channel 14 , so press at the end of the belt channel 14 the inlet slope 44 against the pressure mechanism 42 of the counter element 24 and push this back into the working position. Those component straps 11 , which were not cut in this cutting process, can be cut in the subsequent cutting process.

1

automatic placement

2

substratum

3

electrical module

4

transport distance

5

feeding

6

placement

7

crossbeam

8th

port alarm

9

cutter

10

collection position

11

component tape

12

cutter

13

casing

14

belt channel

15

pipette

16

Transport wheel

17

bag-like deepening

18

linear guide

19

cutting unit

20

cutting element

21

cutting edge

22

wave

23

counter unit

24

counter element

25

peripheral surface

26

counter shaft

27

compression spring

28

rotary drive

29

gear

30

rack

31

Gurthalteeinrichtung

32

first standing clamping belt

33

second standing clamping belt

34

deflection plate

35

deflection

36

first circumferential clamping belt

37

second circumferential clamping belt

38

Deflection / idler

39

idler

40

standing Clamping belt in omega arrangement

41

pressure mechanism Gurthalteeinrichtung

42

pressing mechanism counter element

43

toughened spring element

44

Retractor / inlet slope

120

roller blades

124

pinch

125

pressure surface

220

Stempelrad

224

die wheel

225

ring groove

Claims (26)

Cutting device ( 9 ) for shortening component straps ( 11 ) for a placement machine ( 1 ), comprising: - a housing ( 13 ), - a belt channel ( 14 ), which in the housing ( 13 ), for performing the component belts to be shortened ( 11 ) in a conveying direction (F), - a cutting device ( 12 ), which in the belt channel ( 14 ) guided component straps ( 11 ) transversely to its conveying direction (F), - a Gurthalteeinrichtung ( 31 ) for fixing the component straps ( 11 ), which at least a first and a second clamping element ( 32 . 36 such as 33 . 37 ) with mutually facing clamping surfaces for clamping the component straps ( 11 ), wherein the first clamping element ( 32 . 36 ) is formed as a clamping belt, wherein the cutting device ( 12 ) in a transversely to the conveying direction (F) directed displacement direction (V) movable on the housing ( 13 ) is provided such that in the process of the cutting device ( 12 ) in the belt channel ( 14 ) guided component straps ( 11 ) are cut transversely to its conveying direction (F), wherein the belt holding device ( 31 ) in such a way with the cutting device ( 12 ) cooperates, that the first clamping element ( 32 . 36 ) when moving the cutting device ( 12 ) on the second clamping element ( 33 . 37 ) moved transversely to the direction of displacement (V), so that the component straps ( 11 ) between the clamping elements ( 32 . 36 such as 33 . 37 ) relative to the housing ( 13 ) are fixed in place. Cutting device ( 9 ) according to claim 1, wherein the cutting device ( 12 ) a deflection device ( 38 ) and designed as a clamping belt first clamping element ( 32 respectively. 36 ) of the belt support device ( 31 ) in the displacement direction (V) over the entire travel distance of the cutting device ( 12 ), via the deflection device ( 38 ) is guided and at its two ends in the housing ( 13 ) is firmly anchored, that together with the second clamping element ( 33 respectively. 37 ) a capture area for the component straps ( 11 ) is formed, which is to an effective range of the cutting device ( 12 ) tapers. Cutting device ( 9 ) according to claim 2, wherein the deflection device ( 38 ) a rotatably mounted deflection roller ( 38 ) having. Cutting device ( 9 ) according to one of claims 2 to 3, wherein the deflection device ( 38 ) is designed as Omega-deflection. Cutting device ( 9 ) according to claim 1, wherein the cutting device ( 12 ) a deflection device ( 38 ) and the first clamping element ( 32 respectively. 36 ) of the belt support device ( 31 ) as at least one closed, circulating clamping belt ( 36 ) is formed, which via the deflection device ( 38 ), is movable with the cutting device and is arranged such that between the clamping belt ( 36 ) and the second clamping element ( 33 respectively. 37 ) a catching area is formed which extends to the effective area of the cutting device ( 12 ) tapers. Cutting device ( 9 ) according to claim 5, wherein the clamping belt ( 36 ) Is coupled to a drive such that the belt speed in the effective range of the cutting device is equal to their travel speed. Cutting device ( 9 ) according to claim 6, wherein the clamping belt ( 36 ) is guided in such a way that both in the process of the cutting device ( 12 ) in the direction of displacement (V) and in the opposite direction (G) the component straps ( 11 ) fixes the effective range of the cutting device ( 12 ). Cutting device ( 9 ) according to one of claims 5 to 7, wherein also the second clamping element ( 33 respectively. 37 ) as a closed, circulating clamping belt ( 37 ) is trained. Cutting device ( 9 ) according to one of claims 2 to 7, wherein the second clamping element ( 33 respectively. 37 ) a housing part ( 13 ) of the cutting device ( 9 ). Cutting device ( 9 ) according to one of claims 2 to 9, wherein the clamping belts ( 32 . 36 , respectively. 33 . 37 ) are made of adhesive material. Cutting device ( 9 ) according to one of claims 3, 4, 9 or 10, wherein the deflection device ( 38 ) is formed elastically transversely to the displacement direction (V), so that the distance from the first to the second clamping element to the thickness of the Bauelementgur te ( 11 ) is customizable. Cutting device ( 9 ) according to one of claims 1 to 11, wherein the cutting device comprises: - a cutting unit ( 19 ), which a rotatably mounted cutting element ( 20 ) with at least one circumferentially formed cutting edge ( 21 ), - an account unit ( 23 ), which is a counter element ( 24 ), wherein the cutting unit ( 19 ) and the counter unit ( 23 ) are arranged such that upon rotation of the cutting element ( 20 ) the at least one cutting edge of the cutting element ( 20 ) with the counter element ( 24 ) cooperates in such a way that in the process of the cutting device ( 12 ) in the belt channel ( 14 ) guided component straps ( 11 ) are cut transversely to its conveying direction (F). Cutting device ( 9 ) according to claim 12, wherein the cutting element ( 20 ) as a rotatably mounted roller blade ( 120 ) with a circumferentially formed cutting edge ( 21 ) and the counter element ( 24 ) as a rotatably mounted pressure roller ( 124 ) with a pressure surface formed on the circumference ( 125 ) are formed, wherein the cutting unit ( 19 ) and the counter unit ( 23 ) are arranged such that upon rotation of the roller blade ( 120 ) the cutting edge ( 21 ) of the roller blade ( 120 ) on the pressure surface ( 125 ) of the pressure roller ( 124 ) rolls off. Cutting device ( 9 ) according to claim 13, wherein the cutting device ( 9 ) has a biasing device, which the roller blade ( 20 ) and the pressure roller ( 24 ) presses against each other in a working position, so that the component straps ( 11 ) by a squeezing operation between roller blades ( 20 ) and pressure roller ( 24 ) are separated. Cutting device ( 9 ) according to claim 12, wherein the cutting element ( 20 ) as a rotatably mounted stamp wheel ( 220 ) with two cutting edges formed on the circumference ( 21 ) and the counter element ( 24 ) as a rotatably mounted die wheel ( 224 ) with a circumferentially formed annular groove ( 225 ) are formed, in which the stamp wheel ( 220 ) at least partially immersed. Cutting device ( 9 ) according to one of claims 12 to 15, wherein the cutting edge ( 21 ) of the cutting element ( 20 ) as well as with the cutting element ( 20 ) cooperating areas of the counter element ( 24 ) may consist of hardened material. Cutting device ( 9 ) according to one of claims 12 to 16, wherein the separating device ( 12 ) is formed such that the component straps ( 11 ) when moving the cutting device ( 12 ) in both the direction of displacement (V) and in one of the direction of displacement opposite direction (G) are severed. Cutting device ( 9 ) according to claim 17, wherein the cutting device ( 12 ) is movable by means of a linear drive and a rotary drive ( 28 ) for the cutting element ( 20 ), which is coupled to the linear drive such that the peripheral speed of the at least one cutting edge ( 21 ) of the cutting element ( 20 ) at the point of contact with the counter element ( 24 ) equal to the travel speed of the cutting device ( 12 ). Cutting device ( 9 ) according to claim 18, wherein the rotary drive ( 28 ) comprises: - a rack ( 30 ), which on the housing ( 13 ) is provided and extends in the direction of displacement (V), - a gear ( 29 ), which with the rack ( 30 ) is engaged, as well as - a wave ( 22 ) through which the gear ( 30 ) with the cutting element ( 20 ) is connected in such a way that in the process of the cutting device ( 12 ) the cutting element ( 20 ) is set in rotation. Cutting device ( 9 ) according to claim 17, wherein the cutting device ( 12 ) is movable by means of a linear drive and a rotary drive ( 28 ) for the counter element ( 24 ), which is coupled to the linear drive such that the peripheral speed of the counter element ( 24 ) at the point of contact with the at least one cutting edge ( 21 ) of the cutting element ( 20 ) equal to the travel speed of the cutting device ( 12 ). Cutting device according to claim 20, wherein the rotary drive ( 28 ) comprises: - a rack ( 30 ), which on the housing ( 13 ) is provided and extends in the direction of displacement (V), - a gear ( 29 ), which with the rack ( 30 ) is engaged, and - a counter shaft ( 26 ) through which the gear ( 29 ) with the counter element ( 24 ) is connected in such a way that in the process of the cutting device ( 12 ) the counter element ( 24 ) is set in rotation. Cutting device ( 9 ) according to one of claims 12 to 21, wherein the cutting device ( 12 ) is formed such that the cutting unit ( 19 ) and the counter unit ( 23 ) relative to one another between a working position of the cutting device ( 12 ), in which the cutting element ( 20 ) and the counter element ( 24 ) and a securing position in which the cutting element ( 20 ) of the counter element ( 24 ) is slidable, and a securing mechanism is provided, which is designed such that when over a maximum force occurring in the cutting process, the cutting unit ( 19 ) from the counter unit ( 23 ) is separated. Cutting device ( 9 ) according to claim 22, wherein on the housing ( 13 ) at least one return device ( 44 ) is provided, which the cutting device ( 12 ) moves from the securing position to the working position. Cutting device according to claim 23, wherein the return device ( 44 ) as inlet slope ( 44 ) is configured. Feeding device ( 5 ) for electrical components ( 3 ), which in component belts ( 11 ) and to a pick-up position ( 10 ) of a placement machine ( 1 ), wherein the feeder ( 5 ) via a cutting device ( 9 ) according to one of the above claims 1 to 24. Placement machine ( 1 ) for loading substrates ( 2 ) with electrical components ( 3 ), which a cutting device ( 9 ) according to one of the above claims 1 to 24.