EP3744478A1 - Holding arrangement for a sand-blasting device - Google Patents

Abstract

The invention relates to a receiving device (2) for a sandblasting system (1) with a blasting room (3) in which the objects to be blasted can be placed on the adjustable or rotatable receiving device (2) and processed with the aid of blasting media, with at least the receiving device (2) can be adjusted or rotated with the aid of a drive device (7). The object of the invention is to design a receiving device (2) with a receiving part (25) for an object to be processed in such a way that the receiving part (25 ) is largely guaranteed in exactly the same position in the area of the loading position (4). The object is achieved according to the invention in that the receiving device (2) is a turntable which is driven continuously or in steps and has numerous receiving parts (25) arranged at a distance from one another for the object to be irradiated, the receiving parts (25) via a further drive device (10) can be driven and, before the irradiated object is removed, the receiving parts (25) can be returned to its original receiving position with the aid of a control device and / or adjusting device (34).

Description

The invention relates to a receiving device for a sandblasting system with a blasting room in which the objects to be blasted can be placed on the adjustable or rotatable receiving device and processed with the aid of blasting media, at least the receiving device being able to be adjusted or rotated with the aid of a drive device.

It's from the DE 10 2010 000 532.0 a device for blasting or blasting objects such as components, tools, household items, pots, pans or the like, with a blasting agent depot for receiving a blasting agent generally known, which is connected via at least one line to a blasting nozzle that extends into a blasting room in which the objects to be irradiated can be introduced and irradiated.

The invention is based on the object of designing a receiving device with a receiving part for an object to be processed in such a way that loading of the object to be processed is largely guaranteed in the same position in the area of the loading position.

The object is achieved according to the invention in that the receiving device has a turntable which is driven continuously or step by step and has numerous receiving parts arranged at a distance from one another for the object to be irradiated, the receiving parts being able to be driven via a further drive device and before, during or after the removal of the irradiated object, the receiving parts can be returned to its original receiving position with the aid of a control device and / or adjusting device.

Due to the advantageous arrangement of an aligner, the loading of the receiving part is not only possible manually, but also by a robot, since the receiving part can always be brought into exactly the same receiving position in the area of the loading position.

For this purpose, it is advantageous that the receiving parts are designed as turntables, which are arranged at a distance from one another on the receiving devices and are driven individually or together, with the help of the further drive device, step by step or continuously about an upright axis.

It is also advantageous that the drive device is designed as a clock transmission.

It is also advantageous that the receiving part or turntable has a friction wheel with a stop roller which, when it runs out of the belt and thus freely rotates, rests against a cam disk or friction wheel disk arranged on the receiving device and runs along, forcibly rotates the turntable and aligns it so that the Turntable resumes its original position for receiving at least one new object to be processed. This ensures a clear alignment and absolute repeatability of the time-saving work process. The entire system works less susceptible to interference, reliably and quietly with the help of the rubber stop in the stop curve.

It is also advantageous that the stop roller lies in a position of the turntable opposite a movable curve tip of the cam disk or stop curve and uses the friction wheel to create a non-positive connection between the friction wheel disk, runs along it and prevents the receiving part, turntable or satellite from turning back too far , wherein the friction wheel has a flat surface, which is the non-positive connection between Friction wheel and friction wheel disk interrupts and ensures that the receiving part remains in an angular range.

It is of particular importance for the present invention that some or all of the turntables are each equipped with a drive pulley that is in drive connection with a belt drive. In this way, the rotary movement of the turntable and the receiving part can be used optimally.

It is also advantageous that some or all of the turntables are each equipped with a drive disk and friction wheel and the workpiece to be processed is placed on the satellite or turntable and the receiving device with the turntable can be moved clockwise through the blasting chamber, with the aid of the further drive device and an associated drive belt, which is kept tensioned by a belt tensioner, the turntable is additionally rotated around its own axis and the receiving device is arranged so that the receiving part or turntable can be detached from the drive connection of the drive belt with the help of a belt deflection and at this constellation receiving part or turntable are freely rotatable.

It is also advantageous that the receiving part is a turntable or a satellite which, with a belt pulley and the friction wheel with a flat surface and the stop roller, forms a structural unit that is rotatably mounted on the receiving device or turntable and the receiving device is in such a position when rotated the stop disk or friction wheel disk can assume that the receiving part and the stop roller come to rest against the stop curve and, with continued rotation of the receiving device, can move the receiving part into the original receiving position for receiving a new object to be processed.

It is also advantageous that an adjusting device is provided in the area of the outer boundary or periphery of the stop curve or friction wheel disk, which, with the help of an adjustable aligner, effects an exact alignment of the receiving part in its original receiving position for receiving a new object to be processed.

Furthermore, it is advantageous that when the receiving part is in a certain position, the aligner is pressed pneumatically, hydraulically, electrically and / or automatically against the receiving part and thereby brings the receiving part exactly into its original position for receiving an object to be newly processed.

According to a further development of the invention, an additional possibility is that the aligner is designed as a lever arm which is pivotably received in a holder and connected to an actuating cylinder which brings the lever arm into operative connection with the receiving part and the receiving part in the original position for receiving a can adjust the new object to be processed.

Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures.

Fig. 1

eine perspektivische Darstellung der Beladestation mit den einzelnen Satelliten oder Aufnahmestationen zur Aufnahme des zu bestrahlenden Werkstücks, mit Blickrichtung von vorne;

Fig. 2

die Beladestation in der Draufsicht, gemäß Fig. 1, sowie der Strahlraum und der Aufnahmestationen

Fig. 3a

eine perspektivische Darstellung der Aufnaheeinheit mit Antriebseinheit, Riementrieb, sowie Aufnahmeteile und der Stellvorrichtung;

Fig. 3b

eine perspektivische Darstellung der Indexkurve, in der Ansicht von unten;

Fig. 4a

eine perspektivische Darstellung der Aufnahmestation mit nicht angelegter Stellvorrichtung;

Fig. 4b

eine perspektivische Darstellung der Aufnahmeplattform mit angelegter Stellvorrichtung;

Fig. 4c

die Stellvorrichtung in der Ansicht von der Seite;

Fig. 4d

die Stellvorrichtung in der Ansicht von oben,

Fig. 4e

Anordnung der Kurvenscheiben,

Fig. 5

den Aufbau des Satelliten oder Aufnahmeteils in der Ansicht von vorne;

Fig. 6

eine Teilansicht der Aufnahmeplattform von oben;

Fig. 7

eine Stellung und Bewegung des Aufnahmeteils, bei dem sich das Reibrad kraftschlüssig an der Reibradscheibe abrollt;

Fig. 8

den Bewegungsablauf des Aufnahmeteils in, bei dem das Reibrad mit der Anflachung zur Reibradscheibe steht, dadurch keine kraftschlüssige Verbindung hat und somit die Anschlagrolle an der Anschlagscheibe entlang rollt

Fig. 9

eine weitere Stellung des Aufnahmeteils bei dem das Reibrad eine kraftschlüssige Verbindung mit der Reibradscheibe hat und die bewegliche Kurvenspitze weg drückt;

Fig. 10

eine weitere Stellung des Aufnahmeteils bei dem das Reibrad eine kraftschlüssige Verbindung mit der Reibradscheibe hat und die Anschlagrolle vor der bewegliche Kurvenspitze vorbei bewegt.

Show:

Fig. 1

a perspective view of the loading station with the individual satellites or receiving stations for receiving the workpiece to be irradiated, looking from the front;

Fig. 2

the loading station in plan view according to Fig. 1 , as well as the blasting room and the receiving stations

Fig. 3a

a perspective view of the receiving unit with drive unit, belt drive, as well as receiving parts and the adjusting device;

Figure 3b

a perspective view of the index curve, viewed from below;

Figure 4a

a perspective view of the receiving station with the adjusting device not applied;

Figure 4b

a perspective view of the receiving platform with applied adjusting device;

Figure 4c

the adjusting device in the view from the side;

Figure 4d

the adjusting device viewed from above,

Figure 4e

Arrangement of the cams,

Fig. 5

the structure of the satellite or receiving part in the view from the front;

Fig. 6

a partial view of the receiving platform from above;

Fig. 7

a position and movement of the receiving part in which the friction wheel rolls frictionally on the friction wheel disk;

Fig. 8

the sequence of movements of the receiving part in which the flat face of the friction wheel is facing the friction wheel disk, thus has no frictional connection and thus the stop roller rolls along the stop disk

Fig. 9

a further position of the receiving part in which the friction wheel has a non-positive connection with the friction wheel disc and pushes the movable curve tip away;

Fig. 10

Another position of the receiving part in which the friction wheel has a non-positive connection with the friction wheel disk and the stop roller moves past the movable curve tip.

In Fig. 1 is a receiving device 2 for a sandblasting system 1 with a blasting room 3, on which the objects to be blasted can be placed on the adjustable or rotatable receiving device 2 and processed with the aid of blasting media, at least the receiving device 2 with the aid of a drive device having a drive shaft 9 7 can be adjusted or rotated, the drive shaft 9 being non-rotatably connected to the drive device 7 via a claw coupling.

The receiving device 2 is designed as a turntable, can be driven continuously or step by step and can accommodate numerous receiving parts 25 arranged at a distance from one another so as to be rotatable about an axis. The receiving device 2 is equipped with a position coding 13, which is read out electronically and is thereby recognized where which receiving part is located. The receiving parts 25 serve to receive objects to be irradiated that are transported into the blasting chamber 3. The receiving parts 25 are driven by a further drive device 10, in particular before or during or after the completion of the processing and before the removal of the irradiated object, and are adjusted back into their original receiving position with the aid of a control device and / or adjusting device.

The workflow of irradiation and the transport of the charging stations is as follows:
In the area of the loading position 4, the workpiece to be processed is placed on the receiving part 25 which is rotatably arranged on the turntable 3a and which moves clockwise step by step through the blasting space 3.

In the blasting chamber 3, the receiving parts 25 rotate with the help of a further drive device 10 and the associated drive belt 12, the belt tensioner 14, which is operatively connected to the drive device 10, keeps the drive belt 12 under tension so that the receiving part 25 can rotate about its upright axis.

In the area between the blasting space 3 and the loading position 4, the drive connection between the drive belt 12 and the receiving part 25 is canceled with the aid of a belt deflection 11 from a certain point, so that the receiving part 25 is not driven.

The receiving part 25 can arrive in the area of the loading position 4 in any position. If, however, the loading is carried out with a robot, the receiving part 25 must be precisely aligned in a position specified by the customer, for example, so that the workpiece can always be placed on the receiving part 25 in the previously determined position.

When the receiving part 25 arrives in an arbitrary position as a result of its rotation in the blasting space 3, since the drive connection with the belt drive 12 is canceled, a cam 18 or friction wheel 18b is used for aligning the receiving part 25 from a certain position onwards Figures 5 to 8 used so the receiving part 25, using a small friction wheel 20, which is equipped with a flat 20b, rolls against a cam disk 18 or friction wheel disk 18b.

The receiving part 25 is already aligned in a smaller angular range as a result of the rolling process. With the help of the flat 20b, however, the frictional connection between the friction wheel 20 and the friction wheel disk 18b is interrupted. This ensures that the receiving part 25 can be brought into its desired end position.

In order that further rotation and thus no new frictional connection between the friction wheel 20 and the friction wheel disk 18b is restored, a stop disk 23 hits or runs ( Fig. 4 ), to which a stop roller 22 is attached, to a stop curve 15 ( Fig. 8 ) on.

This achieves the following:
According to Fig. 6 the receiving part 25 runs along the cam disk in such a way that it does not have to be further aligned, since the stop roller 22 only runs a little along the movable cam tip 32. It is not possible to turn the receiving part 25 back too far, since from the position according to FIG Fig. 6 the friction wheel 20 engages again and thus receives a slight angular momentum. Thus, the flattened area 20b always remains aligned in the desired position in the area of the friction wheel curve 18b.

According to Fig. 7 the receiving part 25 arrives in such a way that the friction wheel 20 comes into contact with the receiving part 25 and with the friction wheel disk 18b, thereby the receiving part 25 rolls off the friction wheel disk 18b and rotates the receiving part 25 through the rotary movement of the turntable 3a Stop roller 22 only starts after the curve tip 32.

In order to enable a noise reduction when the stop roller 22 strikes the stop curve 15, this hits a rubber stop 16 which is provided on the stop curve 15.

According to Fig. 8 the receiving part 25 arrives such that it comes into contact with the tip of the friction wheel 20 on the friction wheel disk 18b and thereby rolls off. The stop roller 22 now still has the option of pivoting past the movable curve tip 32 and as in the situation according to Fig. 7 to hit the stop rubber 16 in the stop curve 15.

According to Fig. 9 In the worst case, the pressure between the receiving part 25 and the curve tip 15 should not be too great and the movable curve tip 32 should perform a damping function with the aid of a rubber buffer 33 so that the receiving part 25 does not suddenly pivot away with excessive pressure.

When the turntable 3a has reached its end position, the receiving parts 25 are precisely aligned. An exact alignment of the receiving part 25 is possible by means of an adjusting device 34. The adjusting device 34 is, for example, a pneumatic aligner 17 which is provided in the area of the outer boundary or periphery of the cam disk 18 or the friction wheel disk 18b; with the aid of the adjustable aligner 17, an exact alignment of the receiving part 25 in its original receiving position for receiving a new to be irradiated.

When the receiving part 25 is in a certain position, the aligner 17 presses pneumatically, hydraulically, electrically and / or automatically against the receiving part 25 and thereby brings it exactly into its original position for receiving a new object to be irradiated.

The aligner 17 is designed as a lever arm which is pivotably received in a holder 30 and connected to an adjusting cylinder 27, which can bring the lever arm into operative connection with the receiving part 25 and move the receiving part 25 into the original position for receiving the object to be newly irradiated can.

The aligner 17 is arranged on a plate 30 and its position can be adjusted slightly to the right or left in relation to the turntable 3a such that the lever arm 28 can press the receiving part 25 exactly into the desired angular position when it is in contact (see FIG Figures 3 , 5 , 10 ).

Due to the advantageous arrangement of the aligner 17 and the fine adjustment of the plate and thus the aligner 17, the loading of the receiving part 25 is also possible by a robot, since the receiving part 25 can always be brought into exactly the same end position in the area of the loading position 4.

With the help of this device there is no loss of time when loading the receiving part 25, since the rotary movement of the turntable 3a and the receiving part 25 can be optimally used to always rotate the receiving part 25 into the correct loading position. A smooth, time-saving work process is thus possible.

With the aid of the aligner 17 as well as the turntable 3a and the associated components, an absolutely clear alignment of the receiving part 25 and therefore an absolute repeatability of the work process is guaranteed. The entire system also operates with little noise with the help of the stop rubber 16 in the stop curve 15.

List of reference symbols

1

Sandblasting machine

2

Receiving facility

3

Blasting room

3a

Turntable

4th

Loading position

7th

Drive device, table drive + timing gear

8th

Claw coupling

9

drive shaft

10

further drive device for the receiving part 25

11

Belt drive, satellite drive, belt deflection

12

Drive belt for satellite drive

13

Position coding

14th

Belt tensioner

15th

Stop curve

16

Stop rubber

17th

Pneumatic aligner

18th

Cam

18b

Friction wheel

19th

Pulley

20th

Flattened friction wheel

20b

Flattening on the friction wheel

22nd

Stop roller

23

Stop washer

25th

Receiving part

25a

Support plate with position pin

26th

pen

27

Pneumatic cylinder

28

Indexing lever arm

30th

Bracket, adjusting disk

30b

Fixing device for 34

31

Bearing block

32

Movable curve tip

33

Rubber buffer

34

Adjusting device for aligning the receiving part 25

35

Track of the stop roller 22

36

Predefined angle

37

Exact alignment

38

Direction of rotation of the turntable

39

Control part for fine adjustment of the lever arm

Claims (11)

Receiving device (2) for a sandblasting system (1) with a blasting room (3) in which the objects to be blasted can be placed on the adjustable or rotatable receiving device (2) and processed with the aid of blasting media, at least the receiving device (2) with Can be adjusted or rotated using a drive device (7),
characterized,
that the receiving device (2) has a turntable (3a) which is driven continuously or step-wise and has numerous receiving parts (25) arranged at a distance from one another for the object to be irradiated, the receiving parts (25) being driven by a further drive device (10) and the receiving parts (25) can be returned to its original receiving position with the aid of a control device and / or adjusting device (34) before, during or after the removal of the irradiated object. Device according to claim 1,
characterized,
that the receiving parts (25) are designed as turntables, which are arranged at a distance from one another on the receiving devices (2) and are driven individually or together, with the help of the further drive device (10), step by step or continuously about an upright axis. Device according to claim 1 or 2,
characterized,
that the drive device (7) is designed as a clock transmission. Device according to one of the preceding claims,
characterized,
that the receiving part or turntable (25) has a friction wheel (20) and a stop roller (22) which rests against and runs along a cam (18) or friction wheel (18b) arranged on the receiving device (2) during the rotation of the turntable (25) , while forcibly rotating the turntable (25) and aligning it so that the turntable (25) resumes its original position for receiving a new object to be processed. Device according to one of the preceding claims,
characterized
that the stop roller (22) is in a position of the turntable (25) opposite a movable cam tip (32) of the cam disk (18) or friction wheel disk (18b) and creates a non-positive connection between the friction wheel disk (18b), runs along this and a Prevents the receiving part, turntable or satellite (25) from being turned back too far, the friction wheel (20) having a flat (20b) which interrupts the non-positive connection between the friction wheel (20) and the friction wheel disk (18b) and ensures that the receiving part (25 ) stops in an angular range. Device according to one of the preceding claims,
characterized,
that some or all of the turntables (25) are each equipped with a drive pulley or belt pulley (19) which are drive-connected to a belt drive (11) or the like. Device according to claim 1 or 2,
characterized,
that some or all of the turntables (25) are each equipped with a drive pulley or belt pulley (19) and the one to be processed Workpiece can be placed on the satellite or turntable (25) and the receiving device (2) with the turntable (25) can be moved clockwise through the blasting space (3), with the help of the further drive device (10) and an associated drive belt (12), which is kept tensioned by a belt tensioner (14), the turntable (25) is also rotated around its own axis and the receiving device (2) is arranged in such a way that the receiving part or turntable (25) with the help of a belt deflection ( 11) can be released from the drive connection of the drive belt (12) and in this constellation the receiving part or turntable (25) are freely rotatable. Device according to one of the preceding claims
characterized,
that the receiving part (25) is a turntable or a satellite which forms a structural unit with a belt pulley (19) and the friction wheel (20) with a flat (20b) and the stop roller (22) that is attached to the receiving device or turntable (3a) is rotatably mounted and upon rotation the receiving device (2) can assume such a position relative to the cam disk (18) or friction wheel disk (18b) that the receiving part (25) and the stop roller (22) come to rest against the stop cam (15) and with continued rotation of the receiving device (2) an adjustment of the receiving part (25) can be carried out into the original receiving position for receiving a new object to be processed. Device according to one of the preceding claims
characterized,
that in the area of the outer limit or periphery of the stop curve (15) or friction wheel disk (18b) an adjusting device (34) is provided which, with the aid of a previously adjustable adjusting disk (30) and a lever arm (28), ensures an exact alignment of the receiving part (25 ) in its original pick-up position for pick-up caused by a new object to be processed. Device according to one of the preceding claims
characterized,
that at a certain position of the receiving part (25) the adjusting device (34) is pressed pneumatically, hydraulically, electrically and / or automatically against the receiving part (25) and thereby the receiving part (25) is exactly in its original position for receiving a new one object to be processed. Device according to one of the preceding claims
characterized,
that the adjusting device (34) is designed as a lever arm which is pivotably received in a fastening device (30b) and connected to an adjusting cylinder (27) which brings the lever arm into operative connection with the receiving part (25) and the receiving part (25) in the can adjust the original position for receiving a new object to be processed.

Images