AT523801A1 - Method and system for forming packets from accumulator plates - Google Patents

Abstract

To form stacks from pocketed and non-pocketed accumulator plates, a system (1) is used which comprises a station (2) for forming plate pairs and a station (3) for forming stacks (17) from plate pairs. In the station (2) for forming plate pairs, accumulator plates wrapped ("pocketed") with separator material are moved on a conveyor (4) to the station (3) with their front edges in relation to the conveying direction (arrow 7) rest flush with the stops (5) of the conveyor (4). In the transfer device (20) of the station (3) for forming stacks from pairs of accumulator plates, plate pairs are transferred onto tables (40, 43). The supports (25) of the relocating device (20), on which pairs of plates rest, are moved back by mechanical actuation when pairs of plates are placed on the tables (40, 43). The tables (40, 43) are sometimes simultaneously and sometimes independently of one another loaded with pairs of plates, whereby it is provided that while a stack (17) formed of pairs of plates is being deposited by the table (40) on a conveyor (14) for the removal of Stack (17) already pairs of plates are placed on the second table (43).

Description

Acid accumulators are used.

The cells of lead-acid accumulators contain positive and negative plates, which are electrically connected to one another via connectors attached to lugs on the accumulator plates

be conductively connected.

It is common to include a type of plate, i.e. a positive or a negative accumulator plate, in separator material in order to

Avoid short circuits in cells of accumulators.

Devices are known for producing bags (“envelopes”) or envelopes (“wraps”) for accumulator plates, in which context reference is made to AT 408 702 B and AT 409 200 B.

can be.

Devices are known for accommodating accumulator plates in separator material. For example, the device known from AT 408 702 B for producing bags for

Referenced accumulator plates.

Systems are known for forming stacks of positive and negative plates for accumulators, in which context AT 355 500 B, AT 412 868 B, AT 387 870 B and AT 392 371 B are known

can be referenced.

In the known systems, pairs of a pocketed and a non-pocketed accumulator plate are formed on conveyor belts, which are then conveyed to a station in which the pairs of accumulator plates are placed on top of one another to form stacks. Such stations include, for example, so-called disk wheels (cf. AT 355 500 B and

AT 412 868 B). The pairs are made up of disk wheels

Can be pivoted outwards by force of springs.

Following the station for forming stacks, e.g. after the disk wheel, a path (conveyor track) is provided for removing stacks formed from accumulator plates. Plate packs (stacks of positive and negative accumulator plates) are usually pushed onto the conveyor track with the help of a pusher for removal. Ultimately, the stacks are pivoted from their lying position into an essentially vertical position and the further processing steps (aligning the stacks and attaching the

Connector and pole).

Separators made of microporous plastics, in particular polyethylene, and separators made of glass fibers are known, there being absorptive glass mat separators (absorptive glass mat, AGM separators) or glass fiber separators (leaf type).

The latter are made of fiberglass and fiberglass wool.

Bags that are closed laterally, i.e. transversely to the fold (in English: envelopes), are usually formed from separator material made of plastic. Separator material made of glass fibers or containing glass fibers is usually only made of folded envelopes that are open at the sides

are formed (in English: wraps).

Consisting of or containing glass fibers

Separators have proven themselves to be good, as they are the

Have porosity.

A disadvantage of separators containing glass fibers, including AGCM separators, is that they are pressure-sensitive. When handling separators, in particular AGM separators, for producing pockets, and especially handling pockets made of separator material containing glass fibers, in which accumulator plates are accommodated, print marks often arise on the separators, which lead to defects in the separator

to lead.

The invention is based on the object of providing a method and a system for forming packets from accumulator plates that allow printing marks to arise in glass fibers

Avoid containing separators.

This object is achieved according to the invention with a method

which has the features of claim 1.

As far as the system according to the invention is concerned, the object on which the invention is based is achieved with the features of

independent claim directed to the plant solved.

Preferred and advantageous embodiments of the method according to the invention and the system according to the invention

are the subject of the subclaims.

When stacks are formed from pairs of accumulator plates which have been formed beforehand, according to the invention it is avoided that pressure is exerted on the separator material, so that print marks which can lead to defects are avoided. This is achieved in the invention in that the in their

Active position of springs-loaded supports of the

Disc wheel, not protruding, to be moved back.

In a preferred embodiment, the mechanical actuation of the supports is, for example, a device which is assigned to each of the supports in order to move the supports independently of one another and actively into and out of their operative position. Each of the devices assigned to the supports preferably has on the one hand components (for example spring elements) with which the support is moved into its operative position and held in this, and on the other hand components (for example a cam drive) with which the support is in its

Ready position is moved and held in this on.

The point in time, and thus also the point at which the supports are moved back, can be freely selected in the method according to the invention, as well as in the system according to the invention or its relocating station, in order to ensure that pairs of plates are properly placed on at least one table or one

to achieve already formed plate stack.

In the method according to the invention, in one possible embodiment, accumulator plates received in separator pockets are moved on a conveyor, with their front edge in relation to the direction of movement, that is to say the

the edge on the opposite edge of the flag of the accumulator plate

Sponsor.

This procedure prevents the formation of print marks in the separator material, so that even when using AGM separators when forming plate pairs [a pair comprises a pocketed battery plate and a non-pocketed ("naked") battery plate] and when transporting the formed plate pairs to a station for forming

Stacking of plates is avoided.

When forming pairs of two accumulator plates each (one positive and one negative accumulator plate), one of which is held in a bag made of separator material, one possible embodiment of the method according to the invention means that the plates of each pair are transported “flush with the foot”. Flush with the foot means that the front edges of the accumulator plates or the pocket made of separator material in relation to the conveying direction are aligned, since they both rest against the stop on the conveyor belt. This has the advantage that during further handling of plate pairs and plate stacks formed from them, these are pivoted into an essentially perpendicular alignment of the plates, neither separator material due to moving plates

it is compressed or puffed at the bottom of the pockets.

In a preferred embodiment of a transfer station of the

to accommodate pairs of plates.

In one embodiment of the invention it is provided that the table is lowered after each laying down of a pair of plates by a step or stroke, which corresponds approximately to the thickness of a pair of plates, so that the table or the respective top pair of plates is in place which the supports are swiveled back in order to put down a pair of plates, whereby it can be provided that the pair of plates - falls freely in a short distance before it is on the table or one that has already been put down

The pair of plates comes to rest.

In one embodiment, plate pairs formed in the transfer station are placed on a conveyor from one of the tables, which transports the stacks formed from positive and negative accumulator plates to other system parts

Manufacture of lead-acid batteries moves.

It can be seen that the pivoting of the supports in the transfer station caused by mechanical actuation prevents them from grazing along separators or the edges of separators of plate pairs that have already been deposited and exerting pressure on them, so that print marks that give rise to defects in separators are avoided

are.

In the present case, the term "accumulators" refers to (re) chargeable storage devices for electrical energy on an electrochemical basis (often also referred to as "batteries"),

in particular lead-acid batteries understood.

In the present case, the term “pocketed

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Separator material is added.

The term “bare battery plate” means a positive or negative battery plate for lead-acid batteries that are not in a pocket made of separator material

is recorded.

The term "pair of plates flush with the foot" means a pair of a pocketed and a bare accumulator plate, the edges of which are flush with the flags,

so not offset to each other, are arranged.

In the method according to the invention, the use of two tables (storage surfaces), on which stacks are formed, which is provided in one possible implementation form, allows stacks formed from pocketed and non-pocketed accumulator plates to be transported away without drivers being provided to transport Support plate stacks on a conveyor and - without sliders being provided - move the plate stacks (= stacks of positive and negative accumulator plates) onto the conveyor for removal, because thanks to the use of two tables (storage surfaces) the transport speed of the conveyor for removal of plate packs can be smaller than if only a single table were provided, without cycle times

are impaired.

Further details and features as well as advantages of the method according to the invention and the system according to the invention emerge from the description below in a preferred manner

Embodiments based on the drawings. It shows:

FIG. 2 shows a detail of the system from FIG. 1,

3 shows a carrier of the relocating device in an oblique view

(Disk wheel), Fig. 4 with a support plate embedded in the carrier

a support,

5 shows the interior of the support plate from FIG. 4, FIG. 6 shows a detail of the support plate from FIG. 4 and FIG. 5, and FIG

Figures 7a to 7 show different phases of the operation of tables in the station for forming stacks

Accumulator plates.

A system 1 shown in FIG. 1 for producing stacks 17 from bare and pocketed accumulator plates comprises a station 2 for forming pairs of accumulator plates

("Pairs of plates") and a station 3 for forming stacks

Pairing of accumulator plates ("plate stack").

In station 2, a conveyor 4 is provided on which pocketed accumulator plates are conveyed in the direction of arrow 7 in the direction of station 3. While the pocketed accumulator plates are moved on the conveyor 4, which has, for example, endless conveyor elements 6 that run over deflection rollers 8, the pocketed accumulator plates rest against stops 5 of the conveyor 4. The pocketed accumulator plates lie with their front edge in relation to the direction of movement (arrow 7) (this is the bow of the bag or the envelope made of separator material) against one of the stops 5 of the conveyor 4, so that the flags of the accumulator plates in relation to the conveying direction ( Arrow 7)

pointing back.

For conveying complementary, bare accumulator plates

recorded.

The suction conveyor 9 provided above the conveyor 4 serves to supply complementary bare accumulator plates and has suction heads 10. The suction conveyor 9, like the suction conveyor belt 19, can also be a perforated (endless) belt conveyor to which negative pressure is applied. The lower run of the suction conveyor 9 moves in the direction of arrow 11 at a speed that is selected so that each complementary bare accumulator plate moved by the suction conveyor 9 is placed on a pocketed accumulator plate lying on the conveyor 4 so that the front edge of the complementary bare accumulator plate also rests against the stop 5. This means that the pocketed accumulator plate and the bare complementary accumulator plate lying on it are aligned flush with the foot, because their two front edges in relation to the conveying direction are on one of the

The stops 5 of the conveyor 4 are in contact.

As shown, for example, FIG. 2, the suction conveyor 9 can be pivoted for maintenance purposes, the pivoting being carried out with the aid of a linear motor 12 and around the axis, which is also carried out with the

Drive 13 for the suction conveyor 9 is connected.

The plate pairs formed as described from a pocketed accumulator plate and a lying on their bare accumulator plate are from the conveyor 4 to the

Station 3 for forming stacks from pairs of

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Accumulator plates moved. A relocating device 20 is provided in station 3, which comprises a “disk wheel” with two carriers 23, which are, for example, circular or star-shaped. In each of the carriers 23 there are several, for example three to five, support plates 24, shown in the figure

Embodiment four support plates 24 are provided.

The relocating device 20 with the two circular, disk-shaped carriers 23 in the exemplary embodiment and the support plates 24 provided therein is set in rotation in the direction of the arrow 21 about the axis of rotation 22 by a drive (not shown in detail). It is provided that the support plates 24 with supports 25, which are embedded in the supports 23 and are rotatable relative to them, are set in rotation in such a way that the support surfaces 26 of the supports 25 are always

aligned horizontally and facing up.

The supports 25 are provided on levers 27 which are mounted on a base body 29 of the support plates 24 so as to be pivotable about pivot axes 32. There are springs, two leaf springs 28 in the exemplary embodiment, which are attached to the base bodies 29. The leaf springs 28 rest on pins 30 and load the supports 25 into the operative position shown in FIG. 4 (the support protrudes over the front side of the support plate 24 and the inside of the carrier 23). The pins 30 are in

Holes in the levers 27 are used.

A control with a roller 31 which runs on a control surface 33 is provided on one of the levers 27. At a freely selectable point in time, the control causes the levers 27 to be pivoted in such a way that the supports 25 are moved from their operative position shown in FIGS. 3 and 4 into the readiness position for the support 25 of the left support plate 24 shown in FIG. 3. The pivoting of the supports

25 takes place while deforming the supports 25 into their

Active position loading spring, for example with elastic bending of the leaf springs 28, which elastically load the supports 25 into their active position. Since the supports 25 have inclined surfaces 34 on their sides opposite the support surfaces 26 (pointing downwards), it is prevented - even in the event of failure of the mechanical actuation - that supports 25 run onto a stack of panels and without being moved back

damage it.

Thanks to the mechanical actuation of the supports 25 on the support plates 24 in order to move the supports 25 into their retracted standby position, pairs of accumulator plates lying on the supports 25 are released and, for example by falling free a short distance - as will be described below - filed. In this case, pairs of plates are deposited - unlike in the prior art - without the supports 25 on plates or separator pockets that have already been deposited

along the discarded panels.

In the transfer device 20 in the station 3 for forming stacks from pairs of accumulator plates (“plate stacks”) there are two tables in the exemplary embodiment shown, namely a first one

Table 40 and a second table 43 are provided.

The first table 40 is horizontal in the direction of arrow 41

adjustable and vertically adjustable in the direction of arrow 42.

The second table 43 is designed to be movable away from its effective position in the direction of arrow 44, for example retractable in a circular arc-shaped path. In addition, the second table 43 can be adjusted in the direction of the double arrow 45 (vertically). For example, the pivot bearing 48, about which the circular arc-shaped movement of the second table 43 takes place, in

Direction of arrow 45 vertically adjustable.

The first table 40 and the second table 43 comprise rake-shaped table tops 46 and 47, respectively, which have prongs formed in such a way that the tables 40 and 43 can interlock with their table tops 46 and 47 (FIG. 7a). Due to the (height) adjustability of the first table 40 in the direction of the arrow 42 and the (height) adjustability of the second table 43 in the direction of the arrow 45 it can be achieved that pairs of plates are deposited from the transfer device 20 at a preselected (adjustable) point and placed on the table 40 or the table 43 or a stack of pairs of plates in each case precisely aligned (ie exactly on the top pair of plates in each case). Therefore, stacks 17 formed from bare and pocketed accumulator plates are not fanned out, but

Aligned with already deposited pairs of plates.

In the following, with reference to FIGS. 7a to 7f, various phases of the formation of stacks 17 from bare and pocketed accumulator plates in the area of the station 3 for forming

Stacking 17 explained.

In the situation according to FIG. 7a, the rake-shaped table tops 46 and 47 of the tables 40 and 43 mesh with one another, the table tops 46 and 47 being arranged at the same height. From the transfer device 20, pairs of plates are placed on the interlocking table tops 46 and 47, both tables 40 and 43 being moved downward step by step in order to ensure that “straight” stacks are formed from pairs of plates. The second table 43 is moved downward in the arcuate path before moving away in order to prevent it from lying on the lowermost one on the first table 40

Accumulator plate slides along (see. Fig. 7b).

Once a desired number of pairs of accumulator plates

is on the first table 40, as shown in Fig. 7c, the

first table 40 is moved so far down that the stack 17 from

bare and pocketed accumulator plates on the conveyor 14 (conveying direction arrow 18) for the removal of stacks 17 rests. At the same time, the swiveled in again

second table 43 pairs of plates deposited.

As the next step, as shown in FIG. 7d, the first table 40 moves away from the beginning of the conveyor 14 (arrow 41) and back up (arrow 42) to the pivoted-in second table 43

emotional.

As shown in FIG. 7e, the first table 40 takes over the pairs of accumulator plates that have meanwhile been formed on the second table 43 and, as shown in FIG on the pile 17

is included.

The above description shows that when stacks 17 are formed in station 3, the first table 40 and

of the second table 43 is provided.

This interaction allows, despite high cycle times when moving pairs of a positive and a negative accumulator plate, the conveyor 14 for the removal of stacks, which has, for example, endless conveyor elements 15 that run around a deflection roller 16, for gentle transport of the stacks 17 can be set up, so, for example, does not need to have a driver. Also, no slides or ejectors (pins) are required, which

move a stack 17 onto the conveyor 14.

In particular, it is advantageous, and allows short intervals between pairs of plates conveyed to station 3, that from the transfer device 20 to the second pivotable table 43

Pairs of plates are deposited, while the first table 40 a

Stack 17 deposits on the conveyor 14.

In summary, an embodiment of the invention can be such as

can be described as follows:

To form stacks from pocketed and non-pocketed accumulator plates, a system 1 is used which comprises a station 2 for forming plate pairs and a station 3 for forming stacks 17 from plate pairs. In station 2 for forming pairs of plates, accumulator plates wrapped ("pocketed") with separator material are moved on a conveyor 4 to station 3 (Arrow 7) the front edges are flush with the stops 5 of the conveyor 4. In the transfer device 20 of the station 3 for forming stacks from pairs of accumulator plates, plate pairs are transferred onto tables 40, 43. The supports 25 of the relocating device 20, on which pairs of plates rest, are moved back by mechanical actuation when pairs of plates are placed on the tables 40, 43. The tables 40, 43 are sometimes simultaneously and sometimes independently of one another loaded with pairs of plates, it being provided that while a stack 17 formed of pairs of plates is being deposited by the table 40 on a conveyor 14 for the removal of stacks 17

Pairs of plates are placed on the second table 43.

Claims (1)

Patent claims: Method for forming stacks from pocketed and bare accumulator plates, characterized in that pairs of a positive and a negative accumulator plate, one of which is pocketed and the other bare, are moved to a station for forming plate packs, and that supports on which Pairs of plates rest in the transfer station, when the pairs of plates are placed on at least one table or a stack of plates that has already been formed by mechanically actuating the supports from their operative position into their Ready position to be moved. Method according to claim 1, characterized in that plate pairs are formed by moving a pocketed accumulator plate with its front edge in relation to the conveying direction resting against a stop to the station for forming plate stacks and that while the pocketed plate is being moved, a bare accumulator plate is opened the pocketed accumulator plate is placed, with the front edge of the bare accumulator plate in relation to the conveying direction against the stop is created. Method according to Claim 1 or 2, characterized in that plate pairs are formed by pocketing naked accumulator plates from above onto moving ones with the aid of an additional conveyor Accumulator plates are placed. Method according to one of Claims 1 to 3, characterized in that the bare accumulator plate is additionally used when it is placed on the pocketed accumulator plate in contact with the stop on which the pocketed Accumulator plate is applied, applied and then placed flush with the foot on the pocketed accumulator plate. Method according to one of Claims 1 to 4, characterized in that the front edges of the accumulator plates are the edges of the accumulator plates which are opposite the lugs of the accumulator plates are arranged. Method according to one of Claims 1 to 5, characterized in that, in the station for forming stacks of panels, two tables, which are moved into their operative position at times simultaneously and at times alternately, are used will. Method according to Claim 6, characterized in that pairs of plates are placed on one of the tables, while the other table has a stack of pairs of plates on one The conveyor for the removal of pairs of panels is deposited. Method according to one of Claims 1 to 7, characterized in that the point at which the supports of the station for forming stacks of panels are moved from their operative position into their ready position is set, and that the pair of panels is set by moving the supports into their ready position on a table or a stack of plates that has already been formed is filed. Installation for carrying out the method according to one of Claims 1 to 8, with a conveyor (4) for plate pairs and a station (3) for forming stacks from pairs of accumulator plates, characterized in that the station (3) for forming stacks Pairs of Accumulator plates comprises a relocating device (20), 11th 12th 13th 17th that a first table (40) and a second table (43) are provided, which are charged with pairs of accumulator plates in order to form stacks (17) of bare and pocketed accumulator plates, that following the transfer device (20) a conveyor ( 14) is provided for the removal of stacks (17). System according to claim 9, characterized in that the conveyor (4) is designed as a station (2) for forming pairs of accumulator plates, that on the conveyor (4) for pocketed accumulator plates stops (5) for the relative to the conveying direction (arrow 7) the front edge of pocketed accumulator plates are provided, and that a further conveyor (9) for supplying naked accumulator plates and for depositing naked accumulator plates on pocketed accumulator plates is provided. Installation according to claim 9 or 10, characterized in that the conveyor for bare accumulator plates is a suction conveyor (9) which is above the conveyor (4) for pocketed accumulator plates is arranged. Installation according to one of claims 9 to 11, characterized in that the relocating device (20) has two rotatable supports (23) driven about an axis of rotation (22), in which support plates (24) with supports (25) are provided that supports (25) of a mechanical actuation, preferably having a control surface (33), protruding from its over the inner surfaces of the carriers (23) of the transfer device (20) Real action are adjustable in a standby position. Plant according to claim 12, characterized in that the Support (25) on levers (27) are provided in one 15th 16. 17th 18th 19th 18th Base body (29) of the support plates (24) around an axis (32) are pivotable. System according to claim 13, characterized in that a roller (31) is provided on at least one arm of the lever (27) which is opposite the supports (25) in relation to the pivot axis (32), which roller (31) is provided on the control surface (33) unrolls. Installation according to one of Claims 12 to 14, characterized in that the supports (25) of springs project in their over the inner surfaces of the supports (23) Active position are loaded. Installation according to claim 15, characterized in that the springs are leaf springs (28) which are fastened to a base body (29) of the support plates (24) and to pins (30) which are attached to levers (27) which the supports (25 ) wear, rest, especially rest under tension. Installation according to one of Claims 9 to 16, characterized in that the surfaces of the supports (25) opposite the support surfaces (26) are inclined surfaces (34). Plant according to one of claims 9 to 17, characterized in that the first table (40) of the transfer device (20) in the station (3) for forming stacks from pairs of accumulator plates horizontally and is arranged vertically adjustable. Plant according to one of claims 9 to 18, characterized in that the second table (43) of the transfer device (20) in the station (3) for forming Stacking of pairs of accumulator plates around one 21. 22nd 19th Pivot bearing (48) is pivotable and that the Pivot bearing (48) is designed to be vertically adjustable. Installation according to one of Claims 9 to 19, characterized marked that the first table Table (43) rake-shaped table tops (40) and the second (46, 47). Installation according to one of Claims 9 to 20, characterized marked that the first table (40) to discontinue Stacking (17) from bare and pocketed Accumulator plates to a conveyor (14) for the Removal of stacks (17) can be lowered. Installation according to one of Claims 9 to 21, characterized characterized in that the conveyor is made of stacks of endless conveyor elements are trained by drivers. (14) (15) for removal has that free