DE19915356B4 - Sorting and feeding device - Google Patents

Abstract

Sorting and feeding device with on the output end (9) of an inclined sorting path (8) arranged feed part (32), at the discharge end (10) of the sorting path (8) arranged conveying trough (27), a double roller sorter (1) for sorting parts with predominant longitudinal extent and a ring collar or collar, and with the sorting line (8), which receives the parts for sorting from the feed part (32) and at the discharge end the parts to the conveyor trough (27), by two spaced apart, between them a sorting gap (6) leaving free and inclined to this inclined trough walls (4, 4 ') is formed, the trough walls (4, 4') to a frame (2, 3) are fixed and one in the sorting gap (6) arranged sorting roller (5, 5 '), both of which are mounted in opposite directions upward rotationally drivable via a sorting roller gear (7) at both ends and aligned parallel to each other, dadurc h characterized in that the frame (2, 3) as a base frame (2) and a support frame (3) mounted thereon with a displaceable frame part (3 '), wherein the displaceable support frame part (3') of the support frame (3) at right angles to the sorting rollers (5, 5 ') between at least two end positions with different widths of the sorting nip (6) is mounted displaceable and lockable, and a trough wall (4) and the associated sorting roller (5) on the displaceable support frame part (3') attached are that the displaceable support frame part (3 ') at least on a slide on the base frame (2) is supported, and that at the discharge end (10) of the sorting line (8) fasteners for a flange connection of a downstream conveyor trough (27) are mounted and on upper, task-side end (9) of the inclined sorting path (8) the sorting material is fed from the conveyor of a feed part (32).

Description

The invention relates to a sorting and feeding device with double roller sorter according to the specified in the preamble of claim 1. Art.

Such sorting and feeding devices with double roller sorter with upstream feed part and a downstream conveyor trough are particularly suitable for the orderly feeding of PET bottle blowing machines.

Such an overall plant, including the twin-roll sorter, is sized to the dimensions of a particular blank to make a bottle with a defined bottle opening and size. Therefore, the production of bottles with different openings and different bottle shapes and bottle sizes requires even at relatively small dimensional differences of the sorting own sorting with elaborate designs for central and dimensionally accurate adjustment and adjustment of the feeders and it is extremely complex and time-consuming retrofitting measures for the downstream conveyor troughs necessary. It can also lead to an unwanted adjustment of the sorting system due to carelessness.

Furthermore, the known systems to a very large noise, starting with the reservoir and ending with the delivery in the conveyor trough. There is also the possibility of damaging the sorted when removing from the reservoir with the currently using devices.

Finally, the regulation of the supply of preforms to be sorted in most systems, by separate control devices on each divider, very expensive and complicated to adjust and must be made mostly new changes in sorting.

Likewise, the usual use of high conveyors with large bandwidths and overcapacities, which serve to secure the charge, an excessive effort and leads to uneven delivery of the sorting material to the sorter, whereby its sorting performance can not be fully exploited.

A generic, all features of the preamble of claim 1 having sorting and feeding device is from the US 4,244,459 A known.

From the EP 0 305 699 A2 is a device for rotatably transporting preforms by a heating station to a stretch blow molding machine, in which the sorting gap is adjustable by means of handwheel and spindles.

The invention has the object of providing a sorting and feeding device according to the type specified in the preamble of claim 1 so that it is possible to sort preforms for bottles with very different bottle openings and bottle sizes and bottle shapes with a single double roller sorter and a single upstream feed part and to feed the blow molding machine. In particular, the required adjustment with little effort quickly and accurately, without risk of unintentional adjustment, be feasible. In addition, according to a preferred development, the noise development in the system is decisively reduced even at high throughputs and finally a simple, low-interference and easily adjustable control for the drives of the device is provided.

The former part of the object is achieved by the characterizing features of claim 1 in conjunction with its preamble features.

The subclaims form advantageous embodiments of the invention.

Due to the adjustable design of the double roller sorter, the adaptation to sorting material can be made with very different dimensions.

The mounting of the adjustable part of the sorter on a frame member which is slidably mounted on a base frame and the attachment of two widely mounted at the ends guides makes a precise and easy adjustment of any widths of the sorting gap possible, with an unintentional adjustment of the sorting gap after adjustment is made impossible by the clamping of the parts of the guides together.

The use of an adjustable without special precautions common gear for the two sorting rollers also brings a significant improvement in the conversion process.

It is thus possible to process completely different preforms and to keep the workload for the conversion extremely low, without thereby increasing the susceptibility of the arrangement occurs.

The displacement device becomes particularly reliable through the use of sliding bolts and sliding bearings, because thereby the parallel guidance of the displaceable frame part with the one part of the sorter comprising a trough wall with associated sorter, remains ensured.

For this purpose, the support of the displaceable frame part on a slide of the base frame for the tilt-free displacement using low sliding forces is advantageous.

Improved this arrangement of the guides by the use of compression springs on the sliding bolt with which lateral tilting is prevented.

This also contributes to the central arrangement of a single adjusting screw, which acts adjusting to train and pressure and is sufficient by the slight sliding of the sliding frame part and whereby the adjustability itself is much easier.

An additional simplification of the setting of predetermined, known widths of the sorting gap is achieved by the use of stop pieces, which are advantageously mounted in the region of the two guides on the base frame and against the stops of the sliding frame part can be fed with attached to these attacks, thereby tedious adjustment work is avoided ,

The stop pieces are mounted on pivot axes and each have a plurality of stops which have different distances from the pivot axis and which are arranged in a particularly simplified arrangement parallel to the sorting gap. The stop pieces are pivotable in positions in which a respective stop is arranged opposite the associated stops of the fixed frame part, whereby a predetermined width adjustment of the sorting gap is adjustable without adjustment and the adjustment of the sorter is substantially simplified, without the precision is impaired.

The device of the sorting roller gear is substantially unequal when adjusting the sorting gap between the sorting rollers and is ensured by the appropriate arrangement of the Umlenkzahnrades, laterally next to the two sorting rollers, and by the approximately symmetrical arrangement of the driven wheel of the drive motor at a distance below the drive wheels of the sorters because Thus, the path length of the drive belt remains the same or almost the same and remaining path length differences in the various adjustment positions are compensated by the resilient sliding bearing of the axis of the Umlenkzahnrades.

For the rejection of not sorted parts of the sorted material, the attachment of a deflector wheel with several compliant flags of advantage, which are adapted with their outlines to the cross section between the trough walls of the double roller sorting with narrowest gap width at the end of the sorting path.

Particularly favorable for the use of a conveyor trough of certain dimensions for the promotion of preforms with dimensions in a certain tolerance width, in addition to the use of longitudinal bars are welded in exactly dimensionally stable flange pieces, the use of two opposite guide rods with square or rectangular cross-section, welded in these flange pieces, advantageous because preforms can be processed in a wider range of collar or collar widths.

The adaptation to beyond dimensions of the preforms can be achieved by replacing the conveyor trough with such a corresponding dimensions, in which especially the two guide rods are set to the new width of the adjusted sorting gap.

The transition in inclination from the sorting line to the conveyor chute is made with a curved piece flanged to the discharge-side front end of the double-roller sorter.

The formation of the feed part of the plant with a high-conveyor small width, compared to the length of the part of the sorted, can be compensated in terms of capacity by a higher conveying speed, but the promotion is made uniform and thereby the sorting performance is increased. Moreover, the discharge of the parts at the feed side end of the sorting path of the twin roller sorter can be done in a tight short distance, which also increases the sorting quality and thus the performance of the sorter.

The task of sorting in the feed trough of the high conveyor takes place from the reservoir ago advantageously by means of a vibratory conveyor is easily adjustable, the sorted transported gently, works quieter and has a uniform conveying effect and is also much cheaper to manufacture and in operation.

For noise reduction, it is advantageous to all acted upon by the sorting bodies from the hopper walls of the reservoir on the task trough and the delivery head of the high conveyor to the trough walls of the double roller sorter with plastic plates made of impact resistant polyethylene To produce large wall thickness or from composite panels with surface-connected multi-layer panels made of outer layers of sheet metal, in particular Nirosta and an intermediate layer of plastic good insulation properties, in which much lower wall thicknesses are sufficient to significantly improve the damping properties, it is particularly advantageous the trough walls of Produce a double roller sorter made of solid plastic material with a prismatic cross-section, because a large mass favors noise reduction above average.

The impact of the parts of the sorted goods to the hopper walls of the reservoir and especially at the feed point of the sorting path on the trough walls of the double roller sorting are favorably additionally coated with particularly wear-resistant and additionally sound-insulating conveyor belt material made of polyurethane or the like.

The entire device is advantageously to a greater power than the required feed rate of the blow molding machine, set and the individual drives are controlled with a known off / on a regulation in which a feedback when exceeding or falling below a predeterminable number, at the output of Cartridge accumulated parts of the sorted material takes place.

The invention will be described with reference to the drawing of an embodiment. It shows:

1 a sorting feeder overall, in plan view, schematically;

2 the double roller sorter of the device, with a plan view of the sorting line, schematically;

3 a side view after 2 the twin-roller sorter with weg takenem, movable support frame part;

4 a view of the double-roller sorter from the drive-side end face ago, with narrow sorting gap;

4a a view of the double roller sorter from the drive-side end side, with widely adjusted sorting gap;

5 a section through the double roller sorter, at right angles to the sorting gap with tightly adjusted gap;

5a a section through the double roller sorter, at right angles to the sorting gap with widely adjusted gap;

6 an end view of the double roller sorter at the discharge end, with the flange patterns for two different widths of the conveyor trough;

6a a side view of the conveyor trough.

The central part of a sorting and loading device is a double roller sorter 1 , especially designed for preforms S1, S2 of different dimensions, in which on a common base frame 2 , a shared base frame 3 is mounted on the mutually inclined inclined trough walls 4 . 4 ' a sorting line 8th attached, which have a parallel sorting gap 6 leave between them and arranged at the lower edges below and partially with the roll circumference in the sorting gap 6 reaching parallel arranged sorting rollers 5 . 5 ' , Are arranged on both sides, the In the sorting gap 6 in opposite directions in the sorting gap 6 turning upwards via a sorting roller gear 7 are driven.

One of the trough walls 4 and the associated sorter roller 5 are on a movable support frame part 3 ' attached, which is at right angles to the sorting gap 6 is slidably arranged.

The shift takes place exactly parallel in guides 11 to the task-side end 9 and the dispensing end 10 the sorting line 8th are arranged and each from a sliding bolt 12 , the movable bearing frame part 3 ' is attached, and from a sliding bearing 13 attached to the base frame 2 is fixed and exist in the bore 14 the sliding bolt 12 guided and by the Versehraubungen on the sliding bearings 13 can be fixed, which are loosened before the adjustment.

For tilt-free guidance is the movable support frame part 3 ' guided on two slideways by means of rollers for relief and the sliding bolt 12 bear compression springs for even loading of both guides 11 to avoid lateral tilting when adjusting.

The adjustment of the movable support frame part 3 ' is carried out with a center-mounted, acting on pressure and train adjusting screw 15 ,

To facilitate the setting of predetermined widths of the sorting gap 6 are at the base frame 2 on both sides in the area of the guides 11 one stop piece each 16 on a pivot axis 18 pivotally mounted, which are parallel to the sorting gap 6 is aligned.

Each stop piece 16 is with stops 19 . 19 ' provided against the displaceable, in particular movable support frame part 3 ' with stops 17 is deliverable, indicating the width of the sorting gap 6 is defined.

The drive of the sorting rollers 5 . 5 ' via the at the end of the job 9 arranged sorting roller gear 7 , its drive toothed belt 23 successively at a distance and below two drive wheels 21 . 21 ' the sorting rollers 5 . 5 ' arranged output gear 22 a drive motor 24 , then the drive wheels 21 . 21 ' wraps around one after another and finally over a deflection wheel 20 is guided, wherein the drive path distance when adjusting the width of the sorting gap 6 essentially remains the same and differences in length 7 from the resiliently mounted deflection wheel 20 can be compensated.

At the lower delivery end 10 the slightly falling inclined arranged sorting line 8th is above it at right angles across the sorting gap 6 between the trough walls 4 . 4 ' an engaging deflector wheel 25 Directed against the conveying direction of the sorting material rotatably mounted, with deflector flags 26 is provided with the outlines to the cross section between the trough walls 4 . 4 ' are compliant and yielding the non-sorted parts of the sorted goods, the return via a return 41 in an upstream storage tank 36 reach.

At the front of the discharge end 10 of the double roller sorter 1 is a connector 28 a conveyor trough 27 with its flange piece 30 bolted, with the inclination between the sorting line 8th and the conveyor trough 27 is bridged.

In 6 the dimensions of the flange pieces of conveyor chutes are reproduced for different dimensions of the sorted material.

The conveyor trough 27 consists of longitudinal bars 29 , which limit the cross-section for the sorted goods and in intervals with precision-made, especially laser-cut flange pieces 30 are welded.

In continuation of the sorting gap 6 are on the conveyor trough opposite guide rods 31 arranged with square or rectangular cross section, in the flange pieces 30 are welded and that form the boundary for the ring collar or the bundle of parts of the sorted material, which is pushed along on them.

At significantly different width of the sorting gap 6 the conveyor trough is exchanged for another, adapted in the dimensions, conveyor trough.

The double roller sorter 1 is a feed part 32 upstream with a high-lift 33 that with a carry-carrying conveyor belt 40 lifts the parts of the sorting material and a discharge head 35 at the delivery end 9 the sorting line 8th between the trough walls 4 . 4 ' yields.

The high conveyor 33 takes the material to be sorted in a receiving trough 34 into, this from a vibratory conveyor 37 was discharged in the reservoir 36 from the at the funnel walls 38 of the storage container 36 down sliding parts is charged and has a large width and oblique, adapted to the inclination of the funnel walls, side panels.

The funnel walls 38 , the task trough 34 and the dispensing head 35 of the high conveyor 33 consist of polyethylene plates 39 with a thickness of more than 10 mm, in particular 20 and more mm, or composite thin-layer composite sheets of 3 mm upwards, with sheets arranged on the outside and plastic layer connected therebetween with which improved soundproofing is achieved.

The funnel walls 38 and the discharge area of the sorted good at the discharge end 10 the sorting line 8th of the double roller sorter 1 is additionally coated with a conveyor belt material of polyurethane plastic or other coating material high wear resistance and good sound insulation properties.

The trough walls 4 . 4 ' of the double roller sorter 1 Made of solid polyethylene parts to achieve a particularly good soundproofing and stability.

The high conveyor 33 itself is only slightly wider than the length of two average preforms; resulting in a narrow range of delivery on the sorting line 8th is achieved and the feed is made uniform, making the sorter is better utilizable.

LIST OF REFERENCE NUMBERS

1

Double roll sorter

2

base frame

3

split support frame

3 '

movable support frame part

4, 4 '

Trough walls of the double roller sorter 1

5, 5 '

sorting rollers

6

Sorting gap between the trough walls 4

7

Sorting roller gear

8th

sorting line

9

task-side end of the sorting line 8th

10

delivery side end of the sorting line 8th

11

Guide the movable support frame part 3 '

12

Sliding bolt of the movable support frame part 3 '

13

Sliding bearing of the base frame 2

14

Bore of the sliding bearing 13 for the sliding bolt 12

15

Stellverschraubung

16

Stop piece of the base frame 2

17

Stop on the movable support frame part 3 ' for the stop piece 16

18

Swivel axis of the stop piece 16

19, 19 '

Stops on the stop piece 16

20

Guide wheel of the sorter gearbox 7

21, 21 '

Drive wheels of the sorting rollers 5 . 5 '

22

Output gear of the drive motor 24

23

Drive tooth refinement of the sorter gearbox 7

24

drive motor

25

Deflector wheel of the sorter 1

26

Deflector flag of the deflector wheel 25

27

conveyor trough

2a

Connecting piece of the conveyor trough 27

29

Longitudinal bar of the conveyor trough 27

30

Flange piece of the conveyor trough 27

31

Guide bar of the conveyor trough 27

32

feed section

33

High conveyor of the loading part 32

34

Feed trough of the loading part 32

35

Dispensing head of the charging part 32

36

Reservoir of the loading part 32

37

Vibratory conveyor of the reservoir 36

38

Funnel wall of the reservoir 36

39

steaming plastic plates

40

Conveyor belt of the high conveyor 33

41

Return of the sorted material from the double roller sorter 1

S1

Preformling small diameter, the sorting material

S2

Preformling of large diameter, sorted material

Claims (16)

Sorting and feeding device with at the end of the job ( 9 ) of an inclined sorting line ( 8th ) arranged feed part ( 32 ), one at the delivery end ( 10 ) of the sorting line ( 8th ) arranged conveying channel ( 27 ), a double roll sorter ( 1 ) for sorting parts with predominant longitudinal extent and a ring collar or collar, and with the sorting line ( 8th ), which of the feed part ( 32 ) receives the parts for sorting and at the discharge end of the parts to the conveyor trough ( 27 ) passes, by two spaced apart, between them a sorting gap ( 6 ) leaving free and inclined to this inclined arranged trough walls ( 4 . 4 ' ), the trough walls ( 4 . 4 ' ) on a frame ( 2 . 3 ) are attached and one each in the sorting gap ( 6 ) arranged sorting roller ( 5 . 5 ' ), both of which can be driven in rotation in opposite directions upwards via a sorting roller transmission (US Pat. 7 ) are mounted at both ends and aligned parallel to each other, characterized in that the frame ( 2 . 3 ) as the basic frame ( 2 ) and a support frame ( 3 ) with a displaceable frame part ( 3 ' ), wherein the displaceable support frame part ( 3 ' ) of the support frame ( 3 ) at right angles to the sorting rollers ( 5 . 5 ' ) between at least two end positions with different widths of the sorting gap ( 6 ) is mounted displaceable and lockable, and a trough wall ( 4 ) and the associated sorting roller ( 5 ) on the displaceable support frame part ( 3 ' ) are fastened, that the displaceable support frame part ( 3 ' ) at least on a slideway on the base frame ( 2 ) and that at the delivery end ( 10 ) of the sorting line ( 8th ) Fastening elements for a flange connection of a downstream conveyor trough ( 27 ) and at the top, task-side end ( 9 ) of the inclined sorting line ( 8th ) the sorted material from the conveyor of a feed part ( 32 ) is abandoned. Sorting and feeding device according to claim 1, characterized in that above the sorting gap ( 6 ), one at right angles to the sorting gap ( 6 ) aligned deflector wheel ( 25 ) with deflector flags ( 26 ) is arranged, which is rotatably mounted, driven against the conveying direction. Sorting and loading device according to one of the preceding claims, characterized in that the displaceable support frame part ( 3 ' ) on two guides ( 11 ) is displaceable, which aligned with in the direction of displacement on the displaceable support frame part ( 3 ' ) attached Sliding bolt ( 12 ) in holes ( 14 ) of sliding bearings ( 13 ) of the basic frame ( 2 ) are used and are detectable in these. Sorting and feeding device according to one of the preceding claims, characterized in that the guides ( 11 ) in the end regions of the sorting line ( 8th ) are arranged. Sorting and loading device according to one of the preceding claims, characterized in that between the displaceable support frame ( 3 ' ) and the sliding bearing ( 13 ) each have a compression spring on the sliding bolt ( 12 ) is attached. Sorting and loading device according to one of the preceding claims, characterized in that the displaceable support frame part ( 3 ' ) with one on the base frame ( 2 ) arranged with the movable support frame part ( 3 ' ) on pressure and train-connected adjusting screw ( 15 ) is displaceable. Sorting and feeding device according to one of the preceding claims, characterized in that the adjusting screw ( 15 ) in the middle of the base frame ( 2 ) is arranged. Sorting and feeding device according to one of the preceding claims, characterized in that on the base frame ( 2 ) Stop pieces ( 16 ) against which their attacks ( 19 . 19 ' ) the displaceable support frame part ( 3 ' ) with his attacks ( 17 ) is deliverable. Sorting and feeding device according to one of the preceding claims, characterized in that the stop pieces ( 16 ) in the field of guides ( 11 ) on the base frame ( 2 ) are mounted. Sorting and feeding device according to one of the preceding claims, characterized in that the stop pieces ( 16 ) on the base frame ( 2 ) around a pivot axis ( 18 ) are pivotally mounted in several positions and each stop piece ( 16 ) at least two attacks ( 19 . 19 ' ), the different distances from its pivot axis ( 18 ), which correspond to the setting widths of the sorting gap ( 6 ) correspond. Sorting and feeding device according to one of the preceding claims, characterized in that the sorting roller transmission ( 7 ) with a drive toothed belt ( 23 ), which via a preferably sprung displaceably mounted Umlenkzahnradrad ( 20 ) runs laterally outside and in particular above the drive wheel ( 21 ) of the sorter ( 5 ) of the displaceable support frame part ( 3 ' ) is arranged and the output gear ( 22 ) of the drive motor ( 24 ) at a distance below the two drive gears ( 21 . 21 ' ) of the sorting rollers ( 5 . 5 ' ) and the length of the drive path of the drive belt ( 23 ) substantially in all spacer layers of the sorting rollers ( 5 . 5 ' ) remains constant. Sorting and feeding device according to one of the preceding claims, characterized in that the to the sorting line ( 8th ) immediately downstream subsequent conveyor ( 27 ) of longitudinal bars ( 29 ), which determine the passage cross-section of the sorting material, which in flange pieces ( 30 ) are inserted and welded and in which also two guide rods ( 31 ) are used with square or rectangular cross-section and welded, with which the collar or waist width of the sorted material is limited. Sorting and feeding device according to one of the preceding claims, characterized in that the loading part ( 32 ) from a high-level conveyor ( 33 ), whose dispensing head ( 35 ) the good to be sorted at the job-end ( 9 ) of the sorting line ( 8th ) between the trough walls ( 4 . 4 ' ) and in turn the sorting material from a receiving trough ( 34 ) receives at its lower end, in which this by a vibratory conveyor ( 37 ) is preferably provided with a wide bottom surface and bevelled side walls, in which the funnel walls ( 38 ) of a storage container ( 36 ). Sorting and loading device according to one of the preceding claims, characterized in that the surfaces acted upon by the sorting material of the system components of sound-absorbing plastic plates ( 39 ) with a wall thickness greater than 10 mm and in particular up to 40 mm made of polyethylene or composite material with both sides coated with sheet metal sound-absorbing plastic with a wall thickness greater than 3 mm, such as the Aufgabemulde ( 34 ) and the dispensing head ( 35 ) of the Hochförderers ( 33 ) and / or the funnel walls ( 38 ) of the storage container ( 36 ), and / or are made of solid molded plastic, such as polyethylene, or of composite material, such as the trough walls ( 4 . 4 ' ) of the double roller sorter ( 1 ), and / or with conveyor belt material ( 40 ) are made of polyurethane plastic, as the funnel walls ( 38 ) of the storage container ( 36 ) and / or the task location at the end of the task ( 9 ) of the sorting line ( 8th ) of the double roller sorter ( 1 ). Sorting and feeding device according to one of the preceding claims, characterized in that the high-level conveyor ( 33 ) With the width of its conveyor belt, the length of the parts of the sorted good by twice, exceeds and as well like the vibratory feeder ( 37 ) and the sorting rollers ( 5 . 5 ' ) are driven at a speed which is greater than the feed rate of the plant. Sorting and feeding device according to one of the preceding claims, characterized in that an off / on control with feedback when exceeding or falling below a predetermined number of accumulated parts of the sorted material at the output of the conveyor trough ( 27 ) for the drives of high conveyors ( 33 ) and vibratory conveyors ( 37 ) of the loading part ( 32 ) and double roll sorters ( 1 ) is provided.

Images