DE7732928U1 - Brush making machine - Google Patents

Description

Ing.Peter Otte 7033 Herrenberg (Kuppingen)

Patent attorney Eifelstrasse 7

Telephone (O 70 32) 319 99

1285 / ot / hn
March 20, 1978

Men's

Emil and Rudolf Schnekenburger

Bahnhofstrasse 5a

7867 Zeil / Wiesental

Brush making machine

Summary

It becomes a brush manufacturing machine with an adjustment device proposed for the brush body carrier, which is used for the Drilling and tamping of brush bodies to carry out the necessary adjustment of the same in the simplest and particularly trouble-free manner, any shape of brush bodies can be processed without changing the machine or setting up the machine. the

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BürstErherstEÜungamasdiine for adjusting brush body supports in the usual form a storage for the individual brush holders, on which the brush bodies are usually clamped, as well as movement devices that the brush holder either immediately and / or move their storage so that in the comparatively fast workflow in the brush body the holes required to receive the bundles of bristles can be drilled and / or these can be filled with the bundles. At least for the adjustment of the brush body carrier and thus the brushes attached to them in one direction, preferably but for the entire complex movement and possibly pivoting sequence of the brush body carrier so-called linear amplifiers are used, i.e. movement systems that have a primary movement element, for example a step- j Include motor, which reacts to electrically generated and supplied to it control signals and one of this primary Movement element controlled power amplifier part, which is able to measure the smallest travel increments with great accuracy and generate considerable force. These hydraulic linear boosters act directly on the parts to be moved Brush manufacturing machine and do not require any intermediate and usually complex mechanical Transmission, no counterbalance and no transmission chains such as racks, cranks, cardan shafts, etc. The control the linear force amplifier is carried out with the logi- | matched to the respective type of brush body to be processed see circuit elements, for example so-called microprocessors, which also have memory or at least can be controlled accordingly by memories and for seen are known.

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State of the art

The invention is based on a BürsfEriierstdlur ^ snaadTine according to the Genre of the main claim. There are already a large number of switching devices for adjusting brush body carriers known on brush manufacturing machines, which can be found in the following publications, which are only a selection '' can be taken out: DT-PS 1 186 027, DT-PS 1 072 956, DT-AS 1 782 820, DT-AS 1 199 227, DT-OS 24 47 442 and DT-OS 25 49 015.

Since the sequence of movements of brush holders when drilling or tamping brushes, brooms and the like is comparatively very complicated is and on the other hand the workflow should not take too long, complicated control and movement components have been used to the brush body carrier. to adjust. Usually on information carriers similar to perforated tape Information from stylus pens located and specifically to be coded in advance for each particular type of brush body, possibly also electrical, scanned and serve then performing the adjustment, with im

Mechanical transmission elements, pinions, latches and the like located in rapid circulation according to the respective sequence of information are brought into engagement, as a result of which the brush body carrier is in turn displaced by a partial path length. Since the brush body supports at least in the X-Y coordinate plane, so must be shifted or pivoted in two directions, also under certain circumstances If a height adjustment is also required, one can look at the considerable expense involved in complicated mechanical systems

Transmission links, which are often in a clever process

“ Interlocking, easy to imagine. For example,

wise in the just published DT-AS 1 7 82 820 Clin-

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kenmechanismen used by one with control holes provided control band are controlled, which is scanned by at least one scanner sweeping over the control band. The transmission of the control pulses generated by the control cam then takes place on the latch mechanisms by means of Bowden cables or directly on the associated latches.

This is also the case with the switching device known from DT-OS 2 447 442 for the step-by-step movement of a movable brush holder, switching pawls are provided, which by their engagement cause a gear to rotate gradually in one or the other direction. These rotary movements then act on the movement of the brush holder via suitable transmission mechanisms brought. In detail, the gear wheel has two pawls on opposite sides, which are controlled by a molded piece alternately intervene in the gear, the step size is determined by the position of a Combination of program-controlled pneumatic cylinders in a back and forth swinging backdrop of adjustable stone. One The central shaft then effects a coordinated sequence of movements via eccentrics, rings, chain drives and the like of the individual sub-devices.

Although program-controlled pneumatic cylinders are therefore already provided in this known switching device, that is Facilities that are operated by external forces in the program-controlled Execute sequence movements, the complexity of the entire switching device is made by these pneumatic cylinders only enlarged; the actual program sequence gains / also here again by scanning a corresponding coded perforated tape, in which bolts or needles engage.

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The previously known, complicated structure is completed In the case of brush manufacturing machines, it is still necessary to provide so-called compensating devices on these machines to have to. As is known, the brush body must be compared to the normally fixed drilling and tamping devices Swivel movement, both around at least one horizontal and one vertical axis, so that the holes in the brush bodies can be drilled and the brush bundles can be plugged in. To drill holes on the ends of the brush body

(to be able to do this, it must be moved relative to the tool,

so that the holes are drilled as deep as the holes in the middle of the brush body. Such a movement is generated by the above-mentioned compensating device, also known as a height verse te 1! device can be called. It is known the pivoting of the brush body, as already mentioned, to make its movements by means of a pivoting rod to take place around a vertical and a horizontal axis and to achieve the compensating movement by means of cams. It is but, as can be seen in DT-PS 1 018 388, it is also possible derive this compensating movement by the height adjustment device from the movements of the pivot rod, i. e. the shift by the height adjustment device to:

^ To refer to the sequence of movements in the X-Y coordinate plane]

is achieved translationally or by tilting movements. This is ■ of course only possible if the type of brush body to be processed is known and specified; should brush body Other dimensions and shapes, for example brooms and the like, are processed, are complicated adjustment work necessary.

Finally, from DT-AS 1 216 238 a weight compensation device working with pressure medium for brush body drilling and / or tamping machines known. The brush body supports are

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here arranged vertically one below the other on a carrier that can be displaced in the horizontal direction; they are connecting rods provided, which are brought together and attack at one end of a centrally mounted lever. At the other end of this lever the usual pivoting movement takes place by means of control cams, i.e. the pivoting of the brush bodies in this case essentially in one vertical plane. The lever with the pressure medium then engages on the lever that is movable around its centrally mounted axis working counterbalance device, consisting of piston and cylinder, the other side of which is stationary is. A pressure medium is filled into the cylinder and is connected to a pressure medium container via a line whose pressure can be adjusted with the aid of a pressure regulator. Is then achieved by the pivoting movement achieved by means of control cams of the lever exerts pressure on the piston of the compensating device, then the pressure in the pressure medium tank rises slightly, when the lever is moved in the opposite direction, the pressure medium flows back out of the container and supports it so is the upward movement of the lever. It can be seen that this pneumatically or hydraulically operating cylinder is only has a damping function, i.e. it acts against a deflection and does not take on any control tasks.

Advantages of the invention

The BürsfErhsrstEDurganasdiine according to the invention with the characteristic Features of the main claim has the advantage that the displacement of the brush body carrier causing the linear usually working on hydraulic power amplification Movement components act directly on the parts to be moved, for example on a common, all brushes-j body support connecting lever. This enables a considerable increase in the efficiency of brush manufacturing companies.

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machines, because due to the low inertia of the entire movement system, after carrying out the respective work steps {Drilling or plugging) the actual adjustment movements on the brush bodies extremely quickly, but with high precision and can be carried out without overshoot. There are no other transmission elements such as gears, racks, cranks, Cardan shafts and the like available, so that the associated problems such as the rigidity of the transmission path, Play, alignment problems and the like have been eliminated.

Hydraulic linear force boosters as used in the present invention are known per se and usually have a primary movement component that can be controlled via electrical control signals These are stepper motors, the movement of which is controlled by discrete control pulses with extreme precision can be. It is therefore possible when using hydraulic linear force amplifiers, each direction of movement independently on the other hand, to be controlled very precisely by supplying correspondingly predetermined electrical control signals.

For the control of all existing linear force amplifiers, which are used in the displacement movement of the brush body carrier can be a single programmable control logic circuit are used, which can also be a so-called and also known per se microprocessor. Such control logic circuits using microprocessors can be implemented by external wiring or by external input be caused by information about a specific program sequence, so that the previous complicated perforated tape control systems by simply entering information data, for example by typing on the front panel the control logic circuit can be entered.

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Alternatively, however, it is also possible to have preprogrammed corresponding to the control logic circuit j or the microprocessors

Memory, so-called ROMs (read only memory) or so-called

Assign PROMs (programmable read only memory) whose data [· benches are already matched to certain brush body shapes.

f,. It is therefore possible to simply replace this PROM l | or ROM the entire brush making machine on different Move the brush body. The frequency of the control signals can be increased considerably as the output) speed of the hydraulic linear booster without

Delay of the frequency of the control pulses or the speed

of the controlled stepper motor follows and also precisely studies

J ₁ can be adjusted without a window. A particular advantage that results from

Ι results from the use of the linear force amplifier, the input

Adjustment of the acceleration and deceleration, whereby the drive is exactly the inertial masses to be moved and can be adapted and optimized to the conditions of the machine.

The invention succeeds in a revolutionary way in replacing the previously known, mechanically complex, costly and comparatively failure-prone switching devices in brush manufacturing machines ^ The invention significantly simplifies the structure and the workflow of brush manufacturing machines, reduces the noise level by considerable values, as there are no electro-hydraulic actuators that act directly Long transmission chains are more available and in particular also simplifies the control and scanning process that was previously used for the sequence of movements was necessary. Here, too, there is considerable progress, because of the inevitable wear the control bands in mechanical scanning is avoided.

drawing

Embodiments of the invention are shown in the drawing

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and are explained in more detail in the following description. 1 shows a schematic representation of the principle of a possible embodiment of the mounting
and the adjustment of brush body carriers in a side view, FIG. 2 shows a hydraulic linear power booster which is preferably used for the adjustment and is known per se, and FIG. 3 shows, in an advantageous embodiment of the invention, a height adjustment or compensation device which
also works by means of hydraulic power amplification.

Description of the examples of the invention

Before referring to the invention based on the representation in the figures
more specifically is received is drawn to the fact that the sehe- j matic schematic diagram for the storage and the Verstellungj of brush body supports as shown in Fig. 1, only j perträger indicative of the variety of possible supports for Bürstenkör- \. It is understood that the brush body support \ stored vertically and comparable in the desired directions | can be pushed and swiveled; is substantially QUIRES ONLY \ lent in that the mounting is such that the translator - \ see movement and / or pivoting in the X and j ^ - Y-direction as well as an additional height adjustment is possible jj

whereby the concept of height adjustment applies when the j storage is essentially used to carry out movements, as is the case here chen is taken in a horizontal plane. j

The brush manufacturing machine 1 shown in Fig. 1 comprises
a machine frame 2 with a vertical arm 3. From
lower machine frame 2 can still have more vertical
Stand or carrier run out, which is used to store the above the
Brush body 3 existing tool devices provided
are. Since the tool facilities, their storage and their loading

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Oct. 21, 1977 - activity and its actual effect on the brush body In the present invention, however, are of no great importance, they will not be discussed in more detail. The tool carrier device can be pivotable or stationary; It is only essential that the brush holder shown in FIG. 1 with 4 are designated, so are held in their storage, so on the machine frame 2,3 that the brush body 3 any desired Can perform movement, so pivoting movement, translational Movements, combined translatory movements with pivoting movements, as required for the manufacture of brooms are, but also movements in the vertical direction, i.e. in the embodiment of Fig. 1 in an upward and downward direction.

Vertical stand bearings 3a, 3b are attached to the machine frame 2, in which columns 4a, 4b slide, the at least one, horizontally extending crossbar 5 carry. At each end of the crossbar 5 are perpendicular to this, so in the Running plane of the drawing, support rods 6a, 6b attached, which are used for sliding storage of carriages 7a and 7b = These carriages 7a and 7b can therefore be displaced in a horizontal plane perpendicular to the plane of the drawing. From the sledge 7a, 7b run out of bearing plates 8a, 8b, which are fixedly attached to the carriage; on these bearing plates are outer bearing plates 9a and 9b attached via pivot pins 10 so that, if desired, there is also a pivoting in the same Level results in which the displacement by the carriages 7a and 7b is possible. usually the Pivoting in this plane perpendicular to the plane of the drawing only made use of one of the possibilities mentioned.

The outer bearing plates 9a, 9b end in an upper transverse beam 11, which in turn now supports the brush body supports 4. The brush body carriers are in turn connected via a

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common connecting lever 12 and on this and on them self-articulated intermediate lever 13 for carrying out a further movement, namely here a pivoting movement in the direction of the double arrow A. This connecting or control lever 12 is on the piston rod 15 of a hydraulic working cylinder 16 fixed, this being one of the hydraulic linear booster mentioned the particular structure of which will be discussed in greater detail with reference to FIG. The linear booster 15, 16 is on each () If able, corresponds to it via a control line 17

from a central electronic logic circuit (microprocessor 18) supplied control pulse sequence to bring about a translational displacement movement of its piston rod and thus of the control lever 12. The linear force amplifier 15, 16 is mounted at 18 on the vertical column 3 of the machine frame 2, ie in a stationary manner. This results in a pivoting movement of the brush body carriers and thus of the brush bodies 3 mounted on them in accordance with arrow A when the linear force amplifier 15, 16 is controlled appropriately.

A pivoting in the plane perpendicular to the plane of the drawing either about the bearing pin 10 or a translatory shift in this plane is achieved by a second hydraulic linear booster 20, which is shown in the Embodiment is fixed with its piston rod on the slide 7a and is itself again mounted in a stationary manner. It but it goes without saying that this linear force amplifier 20 also on the outer and therefore pivotable bearing plate 9a (9b) can attack. The second linear force amplifier 20 also receives its control pulses via a connecting line 21 from the central logic circuit 18, which, as already mentioned, can be designed as a programmable microprocessor.

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Microprocessors for any application are seen in themselves known, so that on their structure in the following also not needs to be discussed in more detail; but it goes without saying that, as already mentioned at the beginning, by appropriate programmed input via the keypad 22 or by equipping, also in exchange by means of corresponding receiving openings Memory that can be plugged into the front panel, such as PROM or ROM, the sequence of movements of the linear force amplifier on the can be specified as precisely as possible. Such a memory is denoted by 24 in FIG. 1.

To complete this, the brush manufacturing machine of FIG. 1 then also comprises a pressure medium sump 25, a pump for the hydraulic pressure medium with downstream check valve 27 and the two distribution lines 28 and 29 for supplying the pressure medium to the hydraulic linear amplifiers. Return lines can, if desired, still to be available.

The hydraulic linear amplifier shown in Fig. 2 is known per se, so that on its function and on his Structure only needs to be discussed briefly. Each linear amplifier 30 in itself forms a closed one Control circuit in which the control valve, the position feedback and the actuating cylinder are integrated in one structural unit are. An electrical control motor, for example a stepping motor 31, is provided, to which a electrical control pulse sequence 33 can be supplied. The stepper motor 31 (a tacho-controlled DC motor can also be used here) is via an axially elastic and therefore flexible, but torsionally rigid coupling 34 with a drive spindle located in the cylinder 35 (trapezoidal spindle 36) connected for the piston 37, in this working piston 37 is

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a spindle nut 38 mounted. The free end of the trapezoid ■

The spindle is taken up by the reamed piston rod. \

By turning the control motor 31, the spin *

del into the spindle nut and therefore causes an axial offset »

steering of the hydraulic control valve shown at 39, f namely a square control valve. This results

an oil flow acting on the piston 37, which has a displacement | tion of the working piston and thus also the form-fitting with

connected to it trapezoidal spindle 36 in such a way that the j

j control valve, namely the control slide closed again and j is therefore returned to its zero position. Corresponding to the I of the primary movement element, namely the stepping motor 31 j predetermined rotational movement therefore results in a shift; the piston rod 40 relative to the working cylinder 35. This KoI-> rod 40 is on the moving elements in Fig. 1 t Brush manufacturing machine shown directly articulated. ; ■

It has already been mentioned at the outset that in the case of such brushes manufacturing machines, in the following generally referred to as Hö- | is required Henau same described adjustment process, \ so that the holes always overall vertical and with the same depth I sets can be and indeed the general Bürstenkörper-!

C. I.

V form can be followed. \

The invention solves this so far only extremely complicated Lö- |

Solutions introduced problem in an embodiment of the present |

Invention in that a control device 50 (see Figure 1) I

and a working cylinder 51 controlled by it

hen are. It is essential that the tax |

device 50 via a stylus or a feeler roller 52 |

that is in physical contact with a brush?

1 body 3a is located, like all the others to be processed Brush body 3 on one with the other brush body supports

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4 identical and also identical to these moving brush body carriers 4a is attached. However, this one brush body 3a is not subjected to a machining process, but rather serves only as a direct control element of the scanning

a
by / stylus 52, as it is referred to in the following. The control device 50 forms with the working cylinder 51 a system which is in equilibrium, the equilibrium state of which is then disturbed when the stylus 52 moves up or down from a predetermined position. In this case, the control device 50 causes a corresponding loading of the working cylinder 51 such that it moves its working piston 54 and thus the crossbar 5 attached to it via its piston rod 55 up or down so that the stylus returns to its original starting position. In other words, this means nothing other than that it is ensured by such a height adjustment device that the entire work table for the storage of the brush body carrier, which can also be a so-called cross table, is moved according to the respective outer shape of the brush body being processed.

This measure facilitates the height adjustment in brush manufacturing machines crucial, as it is no longer necessary to use the special brush shape in an appropriately coded link to provide and control elements or the height adjustment from the other movement of the brush body carrier or to derive compensation adjustment. This sub-measure, seen in and of itself, is considered to be inventive enables the fine adjustment of the table carrying the brush body support depending on the actual shape of the Brush body and without any major effort.

The representation of Fig. 3 can be in the individual structure and

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How this device works for height adjustment. It goes without saying that the illustration in FIG. 3 is only in a very schematic form that is essential for the height adjustment Expresses part in a brush manufacturing machine and is not to be understood as limiting. The who Brush body (via brush body carrier, not shown) supporting table 60 is also not shown adjustable in height, under the action of a pneumatic or hydraulic working cylinder 61, consisting of ) Piston 62 and articulated on the machine frame 63

Cylinder part 64. The working piston 62 engages over a piston rod 65 articulated at 66 on the table. The table has a first one (and another corresponding one Number) of brush bodies 3 to be processed and the brush body 3a used here as a template the surface of which a stylus 52, which is under the bias of a spring 67, rests and slides. The stylus is over a connecting rod 6 8 articulated to the slide part 69 of a hydraulic not further described in the following Control valve 70 connected, which is switched in the illustrated zero position so that the pressure of the pressure medium, which reaches the working cylinder ν 61 via hydraulic lines 80 and 72, is balanced so that the working cylinder 61 den

Holds table 60 in the specified position. The control valve 70 is made from a sump 75 via a pump 76 and a check valve 77 the pressure medium is supplied via line 78; a return line is designated by 79. The pressure medium arrives from the pump 76 also at the same time via the line 80 to the end of the working cylinder 61 on the piston rod side.

As soon as through the other, already mentioned shifting options of the table and / or the brush body carrier and thus the brush body of the stylus 52 from its rest position

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is moved away, the control slide 69 of the control valve 70 is changed and the loading of the working cylinder also changes 61 with the pressure medium, until the original state of rest by moving the piston rod 62 is restored. It is therefore a hydraulic follow-up control that provides extremely high positioning accuracy ensures. Seen in isolation, however, hydraulic follow-up controls, those with edge-controlled Working sensor valves, which are known, depend on the special structure of the control valve 70 and the multitude of existing needs Pressure lines, control edges and the like not to be discussed in more detail. The explained height adjustment device secures the Sensitive height adjustment of the table in precise coordination with the particular actual shape of the brush body and on the other sequences of movements that the brush body carriers carry out when processing the brush body.

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Claims (6)

• a ■ · · · 1285 / ot / hn February 10, 1978 PROTECTION CLAIMS 1. <^ Brush making machine ^ p special brush drilling and / ode - tamping machine, with brush body carriers and with their adjustment or allowing pivoting in any direction, these bearing parts and with a brush body carrier adjusting or ν he pivoting, program controlled adjusting device, characterized in that on the movable bearing parts (9a, 9b, 11, 12) of the brush body carrier (4) a movement performing drive elements (15, 40, 55) are fastened by linear force amplifiers (20, 30, 51) forming the adjustment device. 2. Brush manufacturing machine according to claim 1, characterized in that that within the housing of each hydraulic linear power amplifier (20, 30) a responsive to electrical signals primary movement is em ent in the form of a stepper motor (31) is arranged. 3. Brush manufacturing machine according to claim 1 or 2, characterized characterized in that the servomotor (31) is connected to a drive spindle (36) which meshes with a spindle nut (38), the working piston connected to the piston rod (40) 7732928 07/06/78 «C f Ml 1285 / ot / hn February 10, 1978 - 2 - (37) is stored. 4. Brush manufacturing machine according to one of claims 1 to 3, characterized in that on the brush body supports (4) a control rod (12) connecting these is pivotably arranged, at one end of which the piston rod (15) is connected to one of its the other end of the stationary linear booster is attached. 5. brush manufacturing machine according to one of claims 1 to 4, characterized in that a bearing part for the brush body carrier (4) from a longitudinally movable table (5, 8a, 8b, 9a, 9b, 11) is formed, which is supported by a sliding and / or pivot bearing (6a, 6b; 7a, 7b; 10). at which the movable Drive s el em ent of a hydraulic linear force amplifier (20) is attached. 6. brush manufacturing machine according to one of claims 1 to 5, characterized in that for height adjustment of a bearing part forming tables (5, 8a, 8b, 9a, 9b, 11) on this a further brush holder body is arranged on which the stylus (52) of a control device (50) slides and that on the table the movable drive element (55) is one of the control device applied hydraulic linear booster attached which is supported on a stationary machine part (2).