DE2143421A1 - Method and device for the production of sections of profiled strip material - Google Patents

Description

A 39 057 m
August 18, 1971
HN-27-geη 100

Hunter Douglas Piekstraat 2, Rotterdam / Netherlands

Method and device for the production of sections of profiled strip material

The invention relates to a method for operating a device for the production of profiled sections of predetermined length of strip-shaped, permanently deformable strip material, which in a molding mechanism, e.g. a roll molding mechanism, formed material is continuously fed to a cutting mechanism, which after the Pormmechanismus is arranged to cut the profiled strip material according to the desired lengths. The invention also relates to the device in question.

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Such methods are known; doing the cutting mechanism contacted and carried along by the profiled material leaving the molding mechanism. In this procedure the profiled strip material must exert a relatively high driving force on the cutting mechanism. In the event of a thin material, e.g. a metal strip with a thickness of about 0.4 to 0.8 mm, for processing which material the method according to the invention is particularly well suited, these forces can cause undesirable, permanent deformations of the profiled material. .

The aim of the invention is to create a method of this type, in which the material is extremely precisely tailored to the desired length in an economical manner without the risk of undesired Deformation of the material can be cut off.

According to the invention this is achieved in that a cutting member of the cutting mechanism moves at a speed which is slightly lower than the feed speed of the profiled strip material from the forming mechanism, whereupon a temporary bond between the material and the Cutting member is made in such a way that the latter temporarily moves at the same speed as the strip material, wherein the cutting mechanism is actuated to move at the speed of the strip material.

The cutting element can be moved relatively easily at a speed that is slightly lower than that of the Material, while the risk of undesirable deformation of the

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Material is low when the speed of the cutting member is less than the speed of movement of the strip material slightly below value due to the band material is increased to a value equal to the moving speed of the strip material.

It is also possible to achieve very small length tolerances, so that the method according to the invention products can result, which can meet high requirements in terms of tolerance. It has been found in one embodiment of the Invention show that at a movement speed of 10 m per minute and when cutting in sections of 1 m Tolerances of about 0.2 mm and at a speed of movement of 25 m per minute and when cutting in sections of 6 m tolerances of about 0.5 to 1 mm can be achieved.

The invention also relates to a device for producing sections of predetermined length of permanently deformable material Band material, which device has a frame with a Pormmechanismus for forming the band material, the a cutting mechanism is followed continuously by the forming mechanism cuts the supplied strip material into sections of a predetermined length.

According to the invention drive means are provided to the Cutting element of the cutting mechanism without the aid of the fed, profiled strip material at one speed that is slightly lower than that of the tape material coming from the forming mechanism, while the

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A 39 057 m

August 18, 1971

HN-27-gen 100 * (- JX-

Coupling member is provided for a temporary connection to establish between the cutting mechanism and the strip material, during which connection the cutting element is advanced at the same speed as the strip material. This construction can result in an inexpensive device in which the cutting element with a Speed can be moved, which is slightly lower than the speed of movement of the strip material, which is continuous is fed from the molding mechanism. Before performing the cutting action, the speed of the Cutting organ of the speed of movement of the profiled Band material made the same, since then the cutting element is carried along by the band material, for what purpose the speed of the cutting member needs to be increased only slightly by the band material, with undesirable heavy deformation forces not be exercised on the material.

A particularly useful construction can be made, by using drive means which have a preferably pneumatically operated cylinder to which and from which a pressure medium is supplied or discharged through a pipe system can be.

A simple, useful coupling member can thereby be obtained that a stop member is used for this purpose, which is adjustable and can be coupled to the cutting member "into and out of the path of movement of the profiled strip material can be pushed by means of a preferably pneumatically operated adjusting cylinder with the associated pipe system.

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An ejector mechanism can be provided to remove the cut Remove lengths; this mechanism is operated by means of a preferably pneumatically operated adjusting cylinder operated with the associated pipe system.

The device allows in its preferred embodiment very high speeds in feeding the strip material while precisely maintaining the dimensions of the sections, so that the device has a high production capacity and meet high requirements in terms of tolerances can. This method and this device are particularly suitable for processing metal strips, in particular for processing pre-colored light metal strips for the production of penster shields, structural elements and an extended one Range of other products.

The invention is explained below with the aid of a few exemplary embodiments explained in more detail, with further advantages and preferred embodiments of the invention apparent from the description will. Show it:

Fig. 1 is a schematic view of the device according to the invention for producing sections profiled strip material;

Fig. 2 shows the molding mechanism on an enlarged scale the device of Figure 1;

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Pig. 3 the Schnexdmechanxsmus on an enlarged scale the device of Figure 1;

FIG. 4 is a diagram of a pneumatic system for use in the apparatus of FIG Fig. 1 and

FIG. 5 shows a diagram like FIG. 4, but of a variant a pneumatic system.

The device according to FIG. 1 contains a roller-forming mechanism 1 and a Schnexdmechanxsmus 2. The one in FIG. 2 in isolation The form mechanism shown contains four consecutive ones Roller units 3 to 6, each containing eight groups of rollers that are rotatable about horizontal axes. the Groups of rollers are arranged in pairs, one group being arranged above the other and in operative connection therewith can kick. The roller groups of each unit are coupled by chains in such a way that they are all simultaneously with the same peripheral speed can be moved around a workpiece in the form of a permanently deformable strip material to advance, which is present between the cooperating rollers of each pair.

The roller units 3 and 4 are each on one side of a drive member 7, and the roller units 5 and 6 are on each one Side of a drive member 8 is arranged. The drive elements 7 and 8, which are firmly connected to the frame of the form mechanism contain gears that drive gears of the roller units 3 to 6 to drive the rollers. The gears of the drive

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organs are driven by a drive motor, not shown, which forms part of the molding mechanism and is housed in the frame of the device, and preferably via one continuously adjustable gear mechanism, they are coupled to the gears of the drive members 7 and 8. The continuously adjustable drive system can be adjusted by turning an adjusting knob 9.

To quickly switch the device from generating a first profile of the workpiece to that of another profile, the units 3 to 6 are arranged so that they can be easily removed. Each unit can be used as a whole removed and replaced by another unit with differently profiled or otherwise arranged rollers. The drive elements with the associated gears are not shifted when replacing roller units, and all roller units are provided with gears which correspond to the gears of the drive elements 7 and 8, so that these again can be used as drive elements. It can be seen that by replacing complete roller units with a majority of roller groups, the forming mechanism of the device for Creation of differently profiled products can be set in a much faster way than with the previously known devices, in which all rollers have to be replaced and adjusted separately. To customize the forming mechanism for creating differently trained objects, it is advantageous that not all rollers need to be replaced separately, since one Number of rollers rotatable about a single axis can form a single unit, e.g. on a bushing, which can be conveniently over

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pushed a drive shaft and conveniently pushed off this can be.

The cutting mechanism 2 includes a bed 10 which forms part of the frame of the device. A carriage 11 is slidable over the bed and is provided with a cutting member which is formed by a cutting plate 12, which is below the control of a pneumatic cylinder 13 is movable up and down. The cutting mechanism still contains -a table 1 * 1, which also forms part of the frame and on which a support 15 between a number of layers in the Can be moved longitudinally adjustable. The support 15 includes a carriage 16 which is within the support in whose longitudinal direction is displaceable and is coupled to the carriage 11 by a coupling rod 17, which in length is adjustable. The two carriages 11 and 16 can therefore be pushed back and forth uniformly. An arm 19 is pivotable around the axis of a horizontal articulated shaft 18 carried by the carriage 16. The end of the arm 19 opposite the propeller shaft 18 is provided with a stop 20. The arm can be around the articulated shaft 18 by a pneumatic, on the Swivel cylinder 21 attached to slide 16.

The frame of the cutting mechanism is provided with a drive cylinder 22 with a piston 23. The piston rod 2k is connected at one end to the piston 23 and at the other end to the slide 11.

The device described above works as follows:

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A workpiece in the form of strip material is taken from a not shown, on the left side of the device in Fig. arranged coil of the front roller unit 3 and then along the successive rollers of the different Roll units 3 to 6 out to generate the required profile. After the last roller unit, it moves shaped tape material to the cutting mechanism 2. On the below individually described manner, the two carriages 11 and 16 by means of the drive cylinder 22 of a predetermined Initial position moved in the direction of movement of the strip at a speed slightly lower than the speed of movement of the strip. The front end of the profile then comes into contact with the stop 20, so that the two carriages 11 and 16 with the organs coupled therewith are advanced by the strip at the same speed as the speed of advance of the strip. Because the speed of the two carriages at the moment of contact between the front end of the strip and the stroke is only slightly different from the speed of movement of the strip, is the low speed on the strip force exerted permissible. When the two carriages have assumed the same speed as the strip, it will the cutting plate 12 moves downwards to cut off the required length of strip. By adjusting the support 15 and through correct setting of the drive rod 17, the distance between the stop 20 and the cutting plate 12 is such that the im Forming mechanism formed strips can be cut very precisely to the desired length. After cutting off of the strip is the stop 20 by means of the pneumatic

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Cylinder 21 is pulled upwards, whereupon the two carriages can be returned by means of the feed cylinder 22, while by means of the adjustment mechanism 9 ^ the cut Length of the shaped strip is removed laterally. The stop 20 can thereupon by actuating the pneumatic cylinder 21 can be returned to the position shown. Then the whole cycle repeats itself.

^ The ejector mechanism 9 * 1 contains an ejector for the cut lengths of the shaped strip and is connected to a horizontal shaft that can be rotated by a pinion which is itself rotatable by means of a rack of a piston rod, which by the action of two opposite Directions of effective pneumatic cylinder JH and "75 is reciprocated.

That is, the various effects briefly described above evoking pneumatic system is shown in FIG.

This pneumatic system comprises a main supply pipe 25 for compressed air from a main valve 26. The main line 25 is ψ by two lines 27 and 28 to a transport control valve 29 in connection. The lines 27 and 28 are provided with pressure reducing valves 27A and 28A so that beyond the reducing valve 27A the pressure in the line 27 exceeds the pressure in the line 28 beyond the reducing valve 28A. The transport control valve 29 is connected to the interior of the feed cylinder 22 on the side of the piston 23 facing away from the piston rod through a line 30 with a control valve 31 to

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the amount of air flowing through per unit of time. The control valve regulates the supply of compressed air.

The transport control valve 29 is connected by a line 32
the interior of the cylinder 22 on the opposite side of the piston 23 from the piston rod 24. the
Line 32 contains a buffer valve 33 and the control valve
3 ¹ I for setting the flow rate per unit of time
Air volume. A safety valve 35 is connected to the buffer valve 33 and is opened at a certain pressure.

To set the transport control valve 29, one side of the control valve 29 is connected by a line 36 to a spring-controlled safety starter valve 37 which is actuated by the slide 11. The safety starting valve is connected to a starting valve 39 through a line 38. The starter valve 39 is connected by a line 40 to a manually operable valve 41. The valve ¹ is Jl through a conduit 42 to the main supply conduit 25 in connection.

To set the transport control valve 29, this is connected to the line Ί3, which is controlled by a spring Auxiliary valve is connected to line 42. The line 43 also contains an auxiliary valve 92.

The valve 39 is connected by a pneumatic stop 45
a spring operable, and the cylinder 45 is by a

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Line 46 with a holding valve 47 with the line 42 in connection.

In addition to the valve 37 controlled by the carriage 11, there is a buffer control valve 48 and a cutting control valve 49 provided, which are both loaded by a spring and controlled by the carriage. The buffer control valve 48 is designed such that it is only adjusted by the carriage when it moves back after the cutting process.

The buffer control valve 48 is connected by a line 50 the buffer valve 53 in connection to adjust the valve 33 to enable. To enable the buffer valve 33 to be set in the opposite direction, the Buffer valve 33 still through a line 51 with the line at a point between the transport control valve 29 and the buffer valve 33 in connection.

The buffer control valve 48 is connected by a line 52 a line 53 in connection, on the one hand with the adjusting cylinder 21 and, on the other hand, connected to the control valve 54 is to control the position of the stop 20 regulating cylinder 21. Between the control valve 54 and the cylinder 21 a further line 55 is provided, and through a line 56 the control valve 54 is also connected to the line 42. The line 55 is connected by a line 55A to the valve 47 for unidirectional adjustment of the latter. The adjustment possibility of the valve 47 in the reverse Direction is achieved in that a line 57 with the valve durch.eine line 58 with the line at a Place between the valve 29 and the valve 92 is connected.

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The cutting control valve 49 is still through a line 59 with the line 55 in connection. The valve 49 is still through a line 60 with a changeover switch 61 with the cutting control valve 62 connected to adjust the latter in a first direction. The control valve 62 is through a line 63 with the line 42 in connection. The control valve 62 is also connected to the drive cylinder 13 of the cutting insert 12 by two lines 64 and 65.

To adjust the valve 62, the line 66 is connected to this valve and, through a spring-controlled auxiliary valve, to the Line 42 in connection. The possibility of setting the valve

67 against the peder pressure is obtained in that the valve 67 is in communication with the line 64. The setting of the spring-operated valve 44 against the spring action is permitted by the valve 44 being connected to the line 65 is. . '

The valve 92 in the line 43 can be in a first direction be adjusted in that it is connected to the line 66 by a line 93. To adjust valve 92 in in the opposite direction, the valve is in communication with the line 50.

For adjustment, the valve 54 is at one end with the line 36 and at the other end with a spring-loaded valve

68 in connection, which is connected to the line 42 by a line 69. The setting of the valve 68 against the

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Spring action is made possible by the fact that it is also with the Line 43 is in communication.

The switch 61 is also actuated by a line 70 with a hand, the spring-loaded valve 71 connected to the valve ¹ Jl.

Referring to Figure 4, cylinders 74 and 75 are the ejector mechanism connected to one another by a toothed track with the pinion 72 shown schematically. The cylinder 74 is with the Line 76 and the cylinder 75 with the line 77 in connection, which lines connect the two cylinders to an ejection control valve 78. The ejection control valve 78 is in communication with the line 42 through a line 79. To adjust the control valve 78 against the spring action the valve is connected to a line 80 which is connected to the line '58 by a spring-loaded auxiliary valve 81 is. To adjust the valve 8l against the spring pressure, a line 82 is connected to the valve 8l, and through a time setting valve 83, this line can be connected to a line 84 which is connected to the line 42 To set the timing valve 83 is available one side of the same with the line 84 and the other side with the line 58 through a delay element 85 in connection.

The main supply line 25 is also through a line 86 with a spring-loaded switch 87 in connection, the by a line 88 with another, spring-loaded

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Switch 89 is connected. Through a line 90 is the Switch 89 is connected to a switch-off element 91.

The system described above works as follows: When the carriage 11 assumes the initial position shown in FIGS. 1 and 3, the valve 37 is held by the carriage in the position shown, so that the lines 36 and 38 are connected to one another by this valve . If the starter valve 39 is displaced against the spring pressure when a profiled strip is being fed in, air can flow from the main supply line through the lines H2 and UO and the lines 38 and 36 to the transport control valve 29, which is displaced to the right in FIG. As a result, compressed air flows from the line 27 into the lines 32 and 51, so that the buffer control valve 33 is also pushed to the right, whereby air can flow through the control valve 5 * 1 into the transport cylinder, where-

sleds

moved by the piston 23 with the coupled / to the right will. Since, as I said, the pressure in line 27 exceeds the pressure in line 28, through which air the other side of the piston 23 can be let into the cylinder, the starting takes place quickly, which is more detailed below is explained. The relationship between the pressure values prevailing in lines 27 and 28 and between the effective Piston surfaces of the piston 23 is chosen such that the mathematical product of the pressure is the effective piston surface on the right side of the piston is considerably higher than the same mathematical product on the left of the piston. The force exerted on the piston to accelerate the cutting mechanism is therefore greater than that on the

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Piston applied force to reset the cutting mechanism. The speed of the shift depends on the setting of the control valve 3 * 1 for regulating the air volume. It will be evident that a majority of control valves if desired can be provided which can be used to operate at various speeds as desired.

When the engine is started, the valve 5 * 1 is shifted to the right so that the line 55 communicates with the main supply line, and the valve ^ 7 is also moved to the right to introduce air into the cylinder k5 . The piston of the cylinder 21 of the stop is in the lower position, so that the stop lies in the path of the profiled strip. The cylinder ¹ J 5 holds the valve 39 in the depressed position so that the valve 39 does not remain with the profiled strips in conjunction.

The construction is such that upon actuation of the cutting control valve 49 by the carriage 11 during its movement to the right, the front end of the profiled strip is already in contact with the stop, so that at this moment it was initially moved by the feed cylinder 22 Carriage 11 moves at the same speed as the material. When the valve iJ9 is pushed in, compressed air is switched off the line 55 passed through the lines 59 and 60 to the cutting switch 62, which is offset to the left by the compressed air is, creating a connection between lines 63 and 6 * 1 will be produced. The cylinder 13 thereby urges the cutting insert 12, which cuts the length of the profiled strip.

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When compressed air in the line 64 to carry out the cutting operation is performed, the switch 67 is depressed, whereby compressed air flow into the line 66 and the switch 62 can be reset to the right, whereupon compressed air through line 65 on the other side of the piston into the Cylinder 13 for moving the insert in the upward direction is admitted. When compressed air is introduced into line 65 is, the valve 44 is guided in the position shown in Fig. 4, so that compressed air through the line 43 the valve 92 can flow in front of the transport control valve 29.

During the cutting action, the pressure in the line 65 is released and under the spring action the valve 44 is turned into a Out position in which the line 43 with the free air in Connection is, whereby the pressure at the valve 68 disappears, so that the valve is guided into a position in which line 69 communicates with valve 54, which is shown in FIG the position shown in the figure is brought. The valves and the lines are dimensioned in such a way that the cutting impact is carried out before after setting the valve 54 in the position shown air is introduced through the line 63 into the holding cylinder, so that the stop upwards out of the area the front end of the cut profile is pivoted and moved back the coupled carriage can be. This backward movement is brought about by the supply of air through the lines 28 and 30 to the feed cylinder 22. This is made possible by the fact that when compressed air is admitted into the line 64, air pressure is also applied to the line 66 and line 93 connected to valve 92

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is in connection, which is led into the position in which the compressed air subsequently supplied through the line 43 into the transport control valve 29 can flow, which is thereby returned to the position shown in the figure. It should be noted that when compressed air is admitted into the line 43, the valve 68 is returned to the position shown in the figure, so that after the admission of compressed air into the line 36 the Valve 54 can be moved to the right again.

When compressed air through line 43 into the transport control valve 29 can flow, compressed air also flows through line 58 into the timing valve 83. The valve is with some delay down from the position shown in Fig. 4, so that an open connection between the pressure line 84 and the line 82 is produced, whereby the valve 8l is pressed down against the spring action to establish a connection between lines 58 and 80. Thereupon compressed air can flow into the valve 78, which is displaced against the spring force, whereby a connection between the pressure lines 79 and 77 is established. Compressed air is then introduced into the cylinder 75, engaging the piston rod 73 shifted to the left and the ejector coupled to the pinion 72 is rotated around the sections of the profiled strip to remove. When pressurized air is admitted into the transport cylinder through line 30, piston 23 moves back to the position shown in the figure, while air through the line 32, the buffer valve 33 and the transport control valve 39 can flow back until the returning slide 11 comes into contact with the valve 48, which is thereby

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is pressed. During the return movement of the carriage 11, the valve 48 connects to the line 53 in which in this Instantaneous pressure prevails so that when valve 48 is depressed, pressurized air through line 50 into the buffer valve 33 flowing to the left (Fig. 4) into the in Pig. 4 shown Is shifted position, whereupon the air from the cylinder 22 can only escape through the safety valve 35, which is preferably set such that the pressures prevailing on each side of the piston 23 at the end of the stroke will be at least almost the same. This buffer valve together with the safety valve 35 provides a good inhibition the coupled carriage 11 and 16 achieved at the end of the kickback.

When the pressure in line 50 increases, valve 92 becomes also returned to the position shown in the figure, since the pressure in the line 93 has already disappeared. The feed of compressed air to the timing valve 83 is applied to this Way blocked, and the pressure in line 58 disappears, so that the valve 83 returns to the position shown in the figure and the valve 81 is pushed upwards by the spring, whereby the pressure of the line 80 disappears and the valve 78 to the left? (Fig. 4) is moved. Compressed air is then fed into the Cylinder 74 let in, whereupon the tooth path 73 and thus the Return the ejector to the position in which the ejector is used to remove a subsequent length of the profiled material is done.

At the beginning of the kickback of the feed cylinder 21,

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while compressed air is admitted into the line 58, the compressed air flow into the valve k 7, which is thereby guided into the position shown in the figure, so that gradually air can escape from the cylinder ^ 5 and the valve 39 can return to its final position. It will be evident that the cycle described above will repeat itself when thereupon the starter valve 39 is again contacted by another section of the profiled strip.

The valve 87 cooperates with an element which can be adjusted by means of the adjusting knob 9 for adjusting the drive of the rollers which determine the feed speed of the material to the cutting mechanism. If the speed is increased by turning the adjusting knob 9, the organ, not shown, displaced by the knob 9, comes into contact with the switch 87, which is thereby depressed, so that the line 88 receives pressure. The switch 89 connected to the line 88 cooperates with the support 15 and is depressed by the support 15 when it is set for cutting short lengths. When the switch 89 is depressed, compressed air flows to the switch 9I ₃ so that the drive motor is switched off. In this way, the device has a built-in safety which prevents excessive feed rate of material when cutting short lengths; otherwise serious disruptions could occur, since in this case there would not be a sufficient period of time available for the back and forth movement of the carriages.

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The device is also suitable for cutting material by hand control. To this end, the valve 1 Jj is pulled upward, so that compressed air ¹ is introduced Il and 71 in the conduit 95 between the valves. When the valve 71 is depressed against the spring force, air will be admitted into the line 70, the valve 61 will bypass and the line 70 will communicate with the valve 62, which is thereby pushed to the left, causing compressed air from the line 63 can flow into the line 6 ^. The cutting stroke is performed while the valve 71 is released, see above. that this can return to the position shown by spring force, the line 70 again being in communication with the free air. During the cutting operation, pressure is generated in the line 66 so that the valve 62 is moved back and pressurized air is again admitted into the line 65, whereupon the cutting plate is moved upwards again.

Certain profiled strips, especially strips with tangled Profiling cannot be cut off due to the risk of undesired deformation of the profiling. In In this case, it is necessary to cut off the profile by means of a saw, which takes the place of the cutting plate 12 is moved back and forth by means of the cylinder 13. Sawing the strips requires the use of clamping devices, which hold the strip close to the sawing point. Fig. 5 shows the pneumatic system for a device in which the strip material can be sawn to length. The individual parts corresponding to those of the other figures are given the same reference numerals referred to, and there most of the items on

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operate in the same way, further description is omitted. From Fig. 5 it can be seen that the lines 64 and Flow control valves 100 and 101 are included so that the saw plate is reciprocated in a stable manner during operation.

To actuate the 'clamps that form the profile to be sawed hold, there is a clamping cylinder 103 through two lines 104 and IO5 with a clamp control valve IO6 in connection with »Off the figure shows that the clamping control valve 106 is connected in parallel with the control valve 62 and the line 60 and that the valves IO6 and 62 are designed such that when Letting pressurized air into line 60 moves valve 106 to the left (Fig. 5) faster than valve 62. That Valve 62 is also connected to an air supply line 107, which are connected to line 42 via a selector valve IO8 is.

To move the pinch control valve IO6 to the right (Fig. 5), it is in communication with line 42 through line 109. The line 109 contains the timer valve 110. To set the timer valve 110 this is on one End connected by a line 111 to line 65 and at the other end to line 109.

The line 43 contains between the control valves 44 and 92 two spring-loaded control valves 112 and 113 according to FIG the line I05 in connection. The valve 112 is counteracted

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the spring force is adjusted by the fact that it is through a line

114 is associated with line 69, both of which

can be connected to the line k2 through the selector valve IO8.

A switching valve 115 (FIG. 5) is arranged between the lines 68 and 54, so that the stop control valve 5 ² J can be connected both to the line 69 and to the line 93 for adjustment.

The line 86 is also provided with a line 116 for the air supply connected to a sawdust fan 117. Line II6 contains a spring-loaded valve II8, which counteracts the spring force to block valve II6 by means of a time setting valve 119 can be moved. For setting, the timing valve 119 is on the one hand with the line 65 and on the other hand connected to the line 42. To set the Valve II8, air can be fed through valve 119 from line 42 to valve II8.

It will be evident that when compressed air is admitted into the line 60, the two valves IO6 and 62 are moved to the left, where the valve IO6, as I said, moves faster, so that the air supplied through the line 104 to the clamping cylinder ensures that the profile to be sawed is clamped, before the saw comes into contact with the profile. In the event of a pressure increase in line 64, valve 67 becomes such set to let air into line 66 and line 93 as previously described.

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During the sawing process, the pressure prevailing in the line 65 disappears, so that the time setting valve 110, the valve kk and the time setting valve 119 according to FIG. 5 are moved upwards. As a result of the upward movement of the time setting valve 119, the valve 118 can be moved to the right by the spring, so that compressed air can be let into the line 116 and sawdust can be removed by means of the element 117. During the clamping process, the pressure in the line 105 also disappears, so that the valve 113 also moves upwards. No pressure can then be built up in line kj>. When pressure is generated in the line 66 , the stop control valve 5 * J is set in such a way that the stop pivots upwards. This can be done during the sawing process without any risk, since the profile is held by the clamps. The pressure in line 60 also disappears. As soon as the valve 62 is moved back into the position shown in FIG. 5, through the action of the pressure in the line 66 , the valve 110 is gradually pushed down so that after a certain time the valve 106 also moves to the right and the clamping cylinder is operated so that the clamps relax. When compressed air is admitted into the line 65, the time setting valve 119 is set in such a way that the valve 118 is closed again after a certain time.

The valves 44 and 113 are thus moved back again, see above that compressed air into the line 43 to actuate the valve 29 can flow. It will be evident that the remainder of the

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Cycle in the same way as that described with reference to FIG Embodiment is carried out.

The selector valve IO8 makes it possible to use the device according to FIG. 5 also for cutting off strips by means of a plate. The cylinder 13 for the saw element with the control valves 100 and 101 can be replaced by a cylinder 13 for the cutting plate, or the saw element cylinder and the cutting plate cylinder can be arranged next to one another, the lines 6 ¹ J and 65 being connected to one of the two cylinders 13 as desired can be. When the device is to be used for cutting, control valve 108 is depressed to block line IO7 so that no air is supplied to the mechanism for operating the clamps. Air is then fed directly to the line 69 through the control valve 108, the rest of the system being effective in the manner described with reference to FIG.

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Claims (1)

2U3421 A 39 057 m QJL August 18, 1971
HN-26-gen 100 Patent claims: (1. ^ Method for operating a device for producing pro-— fileted sections of a strip-shaped, permanently deformable Material, the strip material formed in a forming mechanism being continuously fed to a cutting mechanism which is arranged according to the porm mechanism and operates continuously to cut the material to the desired length, characterized in that the cutting member (12) of the cutting mechanism (2) is moved at a speed that is slightly lower than the feed speed of the strip material coming from the forming mechanism (1), whereupon there is temporary contact between the material and the cutting element (11 to 13) comes about, so that the cutting element (11 to 13) is temporarily at the same speed how the strip material is moved, the cutting element during its movement at the same speed how the tape material works. 2. The method according to claim 1, characterized in that the cutting member (11 to 13) at a certain speed by means of a feed cylinder (22) with a reciprocable Piston is moved, with a greater force on the piston (23) of the feed cylinder (22) to accelerate the Cutting element (12) is exerted up to the speed of the strip material than that for the return movement of the cutting element (11 to 13) force exerted. 209810/1361 2U3421 A J9 057 m
I8.8.1971
HN-26-gen 100 3. The method according to claim 2, characterized in that in operation the supply of pressure medium to the feed cylinder (22) is reduced once the cutting element (11 to 13) is in motion at the specific speed. i |. Method according to claim 2 or 3, characterized in that in operation, the flow of pressure medium from the Vorsehübylinder (22) is reduced when the cutting element (11 to I3) is moved at the certain speed. 5. Device for the production of sections of predetermined length of a permanently deformable strip material with a frame, in which a forming mechanism for forming the strip material and thereon a cutting mechanism for cutting off the Strip material continuously supplied from the forming mechanism in predetermined lengths thereby characterized in that drive means (22 to 2 * 0 for advancing a cutting member (11 to 13) of the cutting mechanism (2) separately from the fed material at a speed are provided, which is slightly slower than the speed of movement of the material coming from the molding mechanism (1), and that the device further comprises a coupling member (20) which provides a temporary connection between the cutting element (11 to 13) and the strip material, during which the cutting element (11 to 13) at the same speed how 'the tape material is moved. 6. Apparatus according to claim 5, characterized in that the drive means (22 to 2 * 0 a preferably pneumatically effective Pre-thrust cylinder (22) include, to and from the one Pressure medium can be fed or discharged through a valve system (29). - 3 209810/1361 2H3421 A 39 057 m ' 2 O August 18, 1971 * HN-26-gen 100 ' 7. Apparatus according to claim 5 or 6, characterized in that that the coupling member (20) is formed by a stop which is adjustably coupled to the cutting element (11 to 13) and in and out of the web of the strip material by means of a preferably pneumatically operated first adjusting cylinder (21) with the associated valve system (5 * 0 movable is. . 8. Apparatus according to claim 7 *, characterized in that the stop (20) is arranged such that it is reciprocable along a support (15) which in the longitudinal direction in a number of positions with respect to the frame (I. ¹ I) of the device (1, 2) can be fixed parallel to the direction of movement of the strip material. 9. Device according to one of the preceding claims 5 to 8, characterized in that an ejection mechanism (9 ¹ O for .. removing the sections from the cutting mechanism is provided, which ejection mechanism (9 ¹ I) by a preferably pneumatically operated second adjusting cylinder (7 ¹ J, - 75) is operated with the associated control valve system (73). 10. Device according to one of claims 5 to 9, characterized in that that the cutting element (11 to 13) by means of a third, preferably pneumatically operated adjusting cylinder (13) can be moved back and forth with the associated valve system (62). 11. Device according to one of claims 6 to 10, characterized in that that a transport control valve (29), which is through an in 209810/1361 2H3421 A 39 057 m 8/18/1971 W HN-26-gen 100 -JK- Presence of the strip material actuated start valve (39) controlled is used to let compressed air into the feed cylinder (22) is provided, which is coupled to the cutting element (11 to 13). 12. The device according to claim 11, characterized in that between the start valve (39) actuated by the strip material and the transport control valve (29) one from the cutting element (11 to 13) actuated safety valve (37) is provided to provide an open connection between the starter valve (39) and the transport control valve (29) to be produced only when the cutting element (12) assumes the initial position. 13. Apparatus according to claim 11 or 12, characterized in that between the transport control valve (29) and the transport cylinder (22) a first control valve (3 * 0) is provided to reduce the amount of air required to accelerate the cutting element is fed in the direction of movement of the strip material. 14. Device according to one of claims 6 to 12, characterized in that that the feed cylinder (22) through two lines (27, 28) is connected to the main line and that reducing valves (27A, 28a) between these two lines (27, 28) and the main line (25) are arranged such that the pressure in the line (27), through the pressure medium, the feed cylinder (22) is fed to move the cutting member (12) at the desired speed, is higher than the pressure in the Line (28) through which the pressure medium is fed to the feed cylinder (22) for resetting the cutting element (11 to I3) will. 209810/1361 2U3A21 A 39 057 m
August 18, 1971
HN-26-gen 100 15. Device according to one of the preceding claims 10 to 14, characterized in that a buffer valve (33) is provided in the line (32) »is fed through the pressure medium to the feed cylinder (22) to the cutting member (11 to 13) to move a certain speed in a direction corresponding to the direction of movement of the strip material, which buffer valve (33) has a first position in which an open connection between the transport control valve (29) and the control valve (3 ¹ O for the feed cylinder (32) is established is, as well as a second position in which the connection between the transport control valve (29) and the feed cylinder (22) is blocked, and that the line (32) connected to the feed cylinder (22) through a check valve (35) in the second position is associated with the open air. 16. The apparatus according to claim 15, characterized in that the buffer valve (33) can be guided into the position in which the Line (32) brought into connection with the check valve (35) is, by the action of a buffer control valve (48) actuated by the cutting element (11 to 13) can, if this cutting element during its movement in the direction opposite to the direction of movement of the strip material has almost reached its starting position. 17. Device according to one of the preceding claims 6 to 16, characterized »that the line (30) through which the Air is evacuated from the feed cylinder (22) when the Cutting element (11 to 13) is moved in the direction of movement of the strip material, a second control valve (3D for reducing of the outgoing air flow. 209810/1361 A 39 057 m
August 18, 1971
HN-26-gen 100 18. Device according to one of the preceding claims 7 to 17, characterized in that the stop control valve (5 * 0 at the actuation of a start valve (39) controlled by the strip material can be brought into a position in which compressed air is let into the first adjusting cylinder (21), which insert the stop into the path of movement of the strip material can. 19. The device according to claim 18, characterized in that the line (55) through the compressed air to the first adjusting cylinder (21) is fed to advance the stop (20) in the path of movement of the strip material, with a holding valve (47) is coupled, that when air is admitted into this line an open connection between a compressed air source (25) and a fourth adjusting cylinder (^ 5) which produces the starter valve (39) holds in the depressed position. 20. Apparatus according to claim 18 or 19, characterized in that the line (55) for the compressed air supply to the first Adjustment cylinder (21) with a cutting control valve (^ 9) in Connection comes that by a suitable setting of the cutting member (11 to 13) for supplying a signal to a Cutting control valve (62) is actuated to a third adjusting cylinder (13) for performing the cutting action actuate. 21. The device according to claim 20, characterized in that during the air supply to the third adjustment cylinder (13) first auxiliary valve (67) is additionally actuated for the supply of compressed air to the cutting control valve (62) to the cutting control valve (62) put back in a position in the air the third - 7 - ■. 209810/1361 2U3A21 A 39 057 m
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HN-26-gen 100 th adjusting cylinder (13) is supplied to return the latter after the end of a cutting blow, wherein at the same time compressed air is fed to a second auxiliary valve (92) in order to guide it into a position in which compressed air is present is fed to the transport control valve (29) in order to guide this valve (29) into a position in which the feed to the feed cylinder (22) is regulated to retract the cutting member (11 to 13) into the initial position. 22. The device according to claim 21, characterized in that the second auxiliary valve (92) which is arranged in front of the transport control valve (29) can be guided into a position in which the supply of compressed air for setting the transport control valve (29) is blocked by allowing compressed air by actuating the buffer control valve (HQ) through the cutting element (11 to 13). 23 · Device according to claim 21 or 22, characterized in that -. that while compressed air is passed through the second auxiliary valve (92) upstream of the transport control valve (29) for setting the transport control valve, compressed air is also supplied to a time setting valve (83, 85) and a third auxiliary valve (8l) in such a way that the supplied compressed air is passed through after a predetermined period of time the third auxiliary valve (81) is fed to an eject control valve (78) which is guided to a position in which compressed air is fed to an eject mechanism (7 ¹ J, 75) for removing the portion of the strip material. 209810/1361 2H3421 A 39 057 m
August 18, 1971
HN-26-gen 100 24. Device according to one of the preceding claims 10 to 23, characterized in that the cutting member by a Cutting plate is formed, which can be moved back and forth by the action of the third adjusting cylinder (13). 25. Device according to one of the preceding claims 10 to 23, characterized in that the cutting member (12) is formed by a rotatable saw blade and that the third adjusting cylinder (13) leading lines (64, 65) contain organs (100, 101) for regulating the air flow. 26. The device according to claim 25, characterized in that clamping members are provided, which by a fifth, preferably pneumatically effective adjusting cylinder (IO3) can be actuated, the regulation by a clamping control valve (IO6) takes place, which is connected in parallel to the cutting control valve (62) and is designed in such a way that compressed air is faster in the fifth adjusting cylinder (103) is let into the third adjusting cylinder (13) with a timing adjusting valve (110) is provided which is controlled by the cutting control valve (62) and which is adjustable after the cutting control valve (62) is switched into a position in which the cutting member (11 to 13) is withdrawn, and that after a certain Time span of the clamping control valve (IO6) receives a signal for the transition to a position in which the clamping elements are released. 27 · Device according to claim 25 or 26, characterized in that a further time setting valve (119) is provided to briefly supplying a blower (117) with an air stream that can remove sawdust. 209810/1361 2U3A21 A 39 057 m
August 18, 1971
HN-26-gen 100 28. Device according to one of the preceding claims 25 to 27 » characterized in that a selector valve (108) is provided, the supply of compressed air to the mechanism (103) for Can lock actuation of the clamping elements. 29. Device according to one of the preceding claims 6 to 28, characterized in that a manually operable valve (4l, 71) is provided to regulate the air flow to the cutting member (11 to 13) and any associated parts, e.g. the Xlemmmechanismus (103), to be regulated independently. 30. Device according to one of the preceding claims 5 to 29, characterized in that a control valve (87) cooperates with the speed control (9) of the drive of the forming mechanism (1) and is effective at a predetermined movement speed of the strip material, so that compressed air in a Safety valve (89) is let in, which can interact with the support (1Ί) of the cutting mechanism, so that when the distance between the support (I ¹ I) and the cutting element (11 to 13) in the initial position is less than a predetermined minimum value , a safety switch (91) is actuated, which stops the drive of the molding mechanism. 31. Device according to one of the preceding claims 5 to 30, characterized in that the molding mechanism has a number contains cooperating rollers which are rotatable about a common axis and arranged on an axial sleeve are so that they form a unit which is detachably arranged on a drive shaft. - 10 - 209810/1361 2U3421 A 39 057 m
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HN-26-gen 100 32. Device according to one of the preceding claims 5 to 31, characterized in that the forming mechanism has roller units (3 to 6), which each have a number of interacting Have sets of rolls which can form the desired profile of the strip material, which sets are driven by a common, gear drive connected to the unit are coupled to one another. 33. Apparatus according to claim 32, characterized in that
the gears connected to the units (3 to 6)
Gear wheels mounted in individual parts (7, 8) are driven, which individual parts are firmly connected to the machine frame
are. 209810/1361 Blank page