DE2360748A1 - Apparatus for constructing bead rings for automobile tyres - with drum for winding core ring, and tool support - Google Patents

Abstract

Appts. for contracting bead rings for automobile tyres has a drum for winding a core ring, and combining this ring with a core profile, and a tool support, that supplies and processes the matl., and is equipped with several successively used tools for application to the winding drum. The tool support can be used with several winding drums. Both the appts. and number of working operations are simplified.

Description

Continental-Gummi-Werke Aktiengesellschaft, Hanover Device for building bead rings for pneumatic vehicle tires

The invention relates to a device for building Bead rings for pneumatic vehicle tires by winding a core ring and combining with a core profile and / or a core flag With the help of winding drums, which consist of a core ring carrier that can be enlarged in diameter and are arranged on both sides, also in the There are side rings that can be enlarged in diameter and have tool carriers for feeding and processing the bead ring materials.

It is known that core rings are made by winding in rubber mixtures embedded wires formed on reels or similar devices, depending on the shape of the reel groove of the Hing cross section circular, square or hexagonal or different, and after the winding process the two ends of the wire must be held together by a wrap of fabric that is put on by hand »

There are devices for covering the core ring with a core profile known, in which the core profile is obtained continuously from an extruder and discontinuously on a clamped Core ring is rolled on and cut to length.

It is also known to enclose the core ring and optionally also of the applied core profile with a core flag formed from cord or fabric strips embedded in rubber, which is first wound onto a core ring carrier, a device to use the core ring with the pressure pieces that are arranged on both sides of the core ring carrier and that consist in particular of inflatable bellows encased.

A combination of all necessary work steps are opposed to different machine requirements ₃ since in one case a high-speed reel and in the other. Case © a slow-running torrent

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mel and in the meantime only conceivable by hand devices and otherwise special feeding and rolling devices are required, and the object on which the invention is based exists in eliminating the difficulties that exist.

According to the invention, the object is in devices for building solved by bead rings of the type mentioned in that tool carriers with different tools required one after the other are arranged side by side and can be aligned to form a winding drum. It can also expediently several arranged side by side, be arranged sequentially alignable winding drums to the tool carriers. The tool carriers are advantageously immovable in Stations with tools arranged one after the other in a row and alignable to movable tumbling drums, which are also lined up in a row.

There is the advantage that tool carriers of different functions with winding drums in different structural stages to one another aligned and brought into communication to complete a further development stage, according to the invention, adjacent Winding drums and adjacent tool carriers are brought to effective alignment by relative displacement. The fixed arrangement of the tool carriers and the displaceable mounting of the winding drums is advantageous because some tool carriers Require feed devices that contain either wound stock materials or with extrusion or other for Formation of the required profile required facilities in connection stand that. can only be arranged movably with difficulty.

In the case of stations arranged in a row, it is useful that the number of the winding drums is one greater than the number of stations of the tool carriers. Because one on all stations at the same time Operation to build up the bead ring is carried out, and the change of the winding drum from station to station is only a fraction the Hutzzeit should be, would remain to promote the winding drum from the last station to the beginning before the first station only

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the mentioned fraction of the useful time available, which is constructive Poses problems. With a surplus rocking drum this can in the course of the useful time - during which the remaining drums are active - are conveyed from the end to the beginning of the stations without that uncontrollable speeds would be required.

The mentioned additional winding drum is not required if Advantageously, the tool carrier is immovable in stations with successive tools arranged in a circle and movable in a circle Winding drums of the same number can be aligned. In this arrangement, although the guidance and movement of the winding drums Simplified approximately at the periphery of a larger disc, but the required floor area is considerably increased, so that the Economic efficiency is given with sufficient tree conditions.

The economy is then promoted in each case in large series, if one of tool carriers with different ones, one after the other The group formed by the following tools is followed by a further group in series or in a circle the arrangement in a row or in a circle also arrangements in a rectangle, Ellipse or the like. Are conceivable.

According to the proposal, a particularly favorable arrangement is recognized in that a group arranged in a row is assigned a second group - in a centrally symmetrical arrangement when viewed in plan. The two groups arranged in rows are therefore close to one another, the end of one group being adjacent to the beginning of the other group and the end of this group in turn being adjacent to the beginning of the first-mentioned group. If a winding drum becomes free at the end of one group, it is only turned by an angle of 180 and is already at the beginning of the next group with a slight local shift. In this case, however, it is advisable to provide one more winding drum as a tool carrier for each group so that the free rolling drum can be turned around at both ends of both groups during the working time with moderate accelerations ₀

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A particular advantage is seen in the device according to the invention that the tool carrier and the winding drums have devices required to build a bead ring in pairs in a mirror-inverted arrangement. With every act of work at the end of a group each won two bead rings, which are mirror images of each other like a pair of shoes and in this position be fed together to a Beifenaufbaumaschine, where namely, they are also required in mirror image pairs. It is thus promoted the possibility of the bead rings automatically to be fed to the construction machines and entered there automatically. Since the bead rings usually already have the conical core flag required later in the tire when they are being built, all that is left of it is Make sure that the bead rings in the device described here are to be manufactured in pairs in the alignment required later. the The bead rings are not stored in a paired arrangement if intermediate transports or space-pairing intermediate storage are necessary are.

The winding drums are expediently in racks on rails guided slide mounted rotatably and driven and from a central motor via coupling pieces that can be swiveled to and from the slide turned. From one stored along all stations Shaft drive the coupling pieces via gears at each station to drive the drums. To remove the finished bead rings, the The winding drum is expediently stored exposed in the frame at one end and supported at the other end by means of journals that can be moved in and out.

The winding drum itself is operated by means of pressure medium-operated segments Made to be enlarged in diameter and provided with heatable wire end holders. This allows special pieces of tissue to hold the wire ends are omitted.

The first station appropriately receives tools for feeding and winding the core wires and the core flag, while the second station has tools for feeding and winding the core rings. the Depending on the requirements, the following stations receive tools for rolling on the applied parts, while the last station is now Has tools for removing the finished whale rings.

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Another special feature is that the first two stations intended for feeding profiles are essentially horizontal feeders with at least the length of a bead volume, which can be moved tangentially to and from the winding drum and have a gripper for material conveyance . At the end of this feeder, which has a base, a bending and pressure roller is provided and the gripper is equipped with a magnetic or pneumatic device and can be raised and lowered with respect to the feeder base. The entire length required can be stored on the feeder, regardless of whether the profile reaches the feeder continuously or in sections . The profile of a material required to build up the bead ring, transported onto the feeder with the help of a conveyor roller provided at the beginning, slides on the floor of the conveyor up to the vicinity of the end, where it can be gripped by the bending and pressure roller. A light barrier or the like stops the conveying process and the cutting device comes into operation Pressure roller is attached. Since the rotation of the winding drum has started at the same time, the profile piece is pulled down from the feeder without any reefs and brought onto the winding drum. This process is intended both for feeding in the wire (with less frequent cutting with the aid of the cutting device) and for feeding in the core profile as well as for feeding in the core flag. Only the gripper will work pneumatically in one case, electromagnetic in the other, _{or the like}

An embodiment of the subject matter of the invention is provided by the Drawing illustrates. Ss show:

Figo 1 is a plan view of a system for building "bead rings,

FIGS. 2 and 3 & Le lower half of the system shown in FIG. 1 on a larger scale

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K shows a side view of a feeder on a building drum,

5 shows an axial section through a building drum,

6 shows a side view of a frame cooling the building drum,

7 shows a front view of the object according to FIG. 6 with partial section and

8 to 8d cross sections of bead rings to be built up.

Bead rings intended for pneumatic motor vehicle tires are to be produced, the at least one core ring 1 formed from wires embedded in the rubber according to FIG. 8 and a core profile 2 or one Core lug 3 (Figure 8a to 8d) exist. FIG. 8 illustrates a frequently used cross section of a keraring. Both the Hing cross-section and in particular the number of wire turns are determined by the type and size of the Seifert to be produced. the The core rings shown have four turns lying next to one another and four layers of turns lying one on top of the other.

The core ring 1 is completed by a core profile 2, which is also only shown, for example, with a triangular cross-section and basically forms a filler body in order to provide a transition to the carcass plies that are later to be wrapped around the bead ring. But other than this illustrated in Figure 8a embodiment of a bead ring, it may be necessary to produce a bead ring according to Figure 8c, which consists of a core ring 1 and a core 3 consists flag, the latter being embedded in a rubber strength support such. B. is a fabric. Bead rings according to FIG. 8b consisting of a core ring, a core profile and a core lug 3 are also frequently required, the core lug 3 wrapping around the core ring 1 and the core profile 2. A variation is the bead ring according to Figure 3d, which also consists of core ring 1, core profile Z and core lug 3, but with the

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Core vane 3 in the core ring 1 .au a part enclosed and to a part protrudes radially outward. The production of the last- mentioned version is described as an example with the device to be explained below.

The bead rings are produced on winding drums h, which according to. Figure 1 are arranged in two rows and each take on a certain structural function by their position in the row. To take over the next function, the winding drums 1 are moved in the direction of the arrows 5 - so in each row opposite to the other - each by one place and the winding drum reaching a turntable 6 is rotated around a vertical axis by 180 and according to the arrows 7 conveyed as an empty winding drum to the beginning of the next row «The winding drums h run through different stations, whereby the last-mentioned part with the turntable 6 and the transport device in the direction of the arrows 7 would be called the zero station, since at this station no construction process is carried out, but only a winding drum k is transported from the end of one row to the beginning of the other row as an empty winding drum i- / ird _o A bead ring is produced on stations A to!, in each row in ent = opposite direction o

According to FIGS. 6 and 7, the winding drums k are each on a Ge? Stell 8 of a carriage 9 rotatably and drivably mounted, on one side, so that a finished bead ring can be stripped off. A support 10 can be moved in the direction of arrow 11 to the winding drum h so that the winding drum * f receives a support during the construction process. The carriage 9 is not shown with the aid of means moved on rails 12 of the stations intermittently zero to E _ö

The winding drum h is shown in an axial section and on a much larger scale by FIG. 5, in which only the upper ends of the frame 8 and the support 10 can be seen _o The support 10 engages when moved in the direction of arrow 11 in © ine corresponding recess 13 of a well © 1 * t-, die'von a-chain wheel

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can be set in rotation. Each winding drum k is double, that is, two bead rings are built up on it in a mirror-image arrangement at the same time, and essentially consists of the two core supports 16 and the two outer segment rings 17 and the two inner segment rings 18, which are used to change the drum diameter with the help of pistons 20 and 21 can be moved radially, a pressure medium supplied through lines 19 acting on the pistons 20 and 21. The pressure medium is fed to the drum through openings 22. The outer segment ring 17 and the inner segment ring 18 of the left drum half as well as the outer segment ring of the right drum half are in the middle position, ie the drum diameter has the working size required to build the bead ring. Both the outer segment rings 17 and the inner segment rings 18 can be shifted inward by an amount so that a built-up bead ring is free, but the inner segment rings 18 can also be shifted further outward, as is the case with the right half of the drum extended segment ring 18 illustrated to, for. B. to push the core flag 3 with the core profile 2 of the left drum half in the position shown in dashed lines. The core carrier 16 can be adjusted radially independently of the segment rings 17 and 18 by magnetic action on a magnetizable core 23 and can therefore be changed in diameter. A heatable and welded holder 24 is used to temporarily hold the wire end when forming the core ring 1, which is connected to the support 10 on the left side of the drum and to it against the direction of the arrow 11. can be swiveled away.

In Figures 2 and 3, the winding drums k of the lower row 'of Figure 1 can be seen on an enlarged scale in a plan view.

The winding drums k are located in each of stations 0 to E and are set in rotation in the area of stations A to E by a motor 25 and a shaft 26 which contains an output drive 27 at each station and in one for each station. axially displaceable coupling part 28 ends. The outputs 27 are stationary and can through

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Moving their coupling parts 28 are remotely locked into mating coupling pieces 29. These mating coupling pieces 29 are each connected via a shaft 30, an angular gear 32 and a chain drive 33 to the chain wheels 15 of the winding drum unit k . To move the winding drums k from one station to the other so the coupling parts 28 are temporarily withdrawn, so that the motor 25 from all rocking drums k simultaneously for the duration of a useful time of z. B. 10 seconds in rotation. A drive for the winding drums k is not required on station O, since it is only brought into standby here.

Stations A and B are used to supply the materials required to build up the bead core. At station A, a wire sheathed with a rubber mixture and the core flag, and at station B, the core profile is brought in twice. The feeders 3 ^ i, which can be seen in FIG. K in a side view, serve for this purpose. The feeders 3 ¹ * are also designed twice and bring the required materials for each drum side at the same time. The feeders 3k essentially consist of the feeder base 35 and the pressure and holding rollers 36 and 37 'of a conveyor device 38 which is set in motion by a motor 39 and a cutting device kO which is driven by a motor * t1. The conveying device 38 can be lifted off the feeder floor 35 with the aid of pressure-medium-actuated working cylinders h2 in order to move away from the material conveyed on the feeder floor 35. The conveying device acts with the aid of magnets or with the aid of suction nozzles on a strand that is brought in, which can be a wire, a core profile 2 or a core lug 3. This strand kj> is withdrawn from supply rolls k $ (FIG. 2) located on roll holders hh (FIGS. 1 and 2).

From Figure k it can be seen that the winding drums h are provided interchangeably with those with a larger or smaller diameter for adaptation to the respective pneumatic tires to be produced.

- 10 -

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The two feeders for stations A and B can be moved up to the winding drum k and removed from it, for which purpose rods 46 (FIG. 2) are slidably mounted on a foundation 47. The cutting device kO is also arranged displaceably on the feeder 3 ^ so that the pieces separated from the strand 43 correspond to the respective requirements with regard to their length. The cutting device 40 of station A is arranged, for example, obliquely to the conveying direction, so that the cut pieces are each provided with obliquely extending ends 48 (FIG. 2, station A).

The operations are as follows:

An empty winding drum 4 pushed from station O to station A is set in rotation by connecting the coupling parts 28, 29 and at the same time the conveyor device 38 pushes a strand 4-3 of a wire lying on the feeder floor 35 in the direction of the drum 4 and the pressure - And holding roller 36 presses it down until a layer is wound onto the core holder 16. The conveyor device 38 then brings a severed piece of a core lug 3 onto the winding drum 4, while further layers of the wire are simultaneously wound onto the core lug 3, as can be seen from FIG. 5 (left drum half). After this process, the drum is conveyed from station A to station B and at the same time a new drum is brought from station 0 to A, where this process is repeated.

At station B, a core profile 2, correctly cut to length, is wound up from the feeder Jk (Fig. 5). This drum 4 now arrives at station C (FIG. 3) where pressing tools 49 in the form of rollers compress the wound materials and connect them intimately to one another. In station D, the two inner segment rings 18 of the winding drum 4 are enlarged in diameter and parts of the core flap with the core profile adhering to it are turned upwards, while other designed pressing tools 50 come into effect and connect the core ring 1 to the core profile 2. Finally, the fully assembled pair of bead rings is gripped by gripper 51 at station E, the drum is reduced in diameter to the smallest dimension and

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the support 10 moved away from the drum k so that the initially moved together grippers 51 can convey the Viulstrings out through the Zitfischen- space _o From station B the now empty winding drum k finally arrives at station 0 of the counter-rotating sieve, where it initially turned with the help of the turntable 6 and others 180 and then conveyed along the arrow 7.

The number of stations and the work files provided there can be can of course be varied according to requirements *

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Claims (22)

Patent claims: [Device for building bead rings for pneumatic vehicle tires by winding a core ring and uniting it with a core profile and / or a core lug with the help of winding drums, which consist of a core ring carrier that can be enlarged in diameter and on both sides arranged segment rings, which can also be enlarged in diameter, and tool carriers for feeding and processing of the materials, characterized in that tool carriers (3 ^ i ^ 9 »50, 51) with different, successively required Tools are arranged side by side and can be aligned to form a winding drum. 2. Device according to claim 1, characterized in that a plurality of adjacently disposed to the tool carriers (3 ¹ * · »^ 9» 50 »51) successively alignable winding drums ⁽¹ O are arranged. 3. Device according to claims 1 and 2, characterized in that that the tool carriers (3 ^ t ^ 9 »50, 51) immobile in stations (A to E) with consecutively arranged tools lined up one after the other and into, movable, also lined up one after the other Tool drums are alignable. k. Device according to claims 1 to 3 »characterized in that the number of rocking drums (4) is one greater than the number of stations (A to E) of the tool carriers (3 * f, ^ 9, 50, 51). · 5. Device according to claims 1 and 2, characterized in that the tool carriers (3 ^ »^ 91 50, 51) are arranged immovably in stations with successive tools in a circle and can be aligned to form winding drums (10 of the same number ^{movable in a circle).} 6. Device according to claims 1 to 5s, characterized in that that one of tool carriers (3 ^, 49, 50, 51) with different, a group formed in succession by the works, another group in a row or in a circle. 509824/04 5 8 -13- 7. Device according to claims 1 to k and 6, characterized in that one group arranged in a row is assigned a second "group - in a centrally symmetrical arrangement when viewed in plan. 8. Device according to claims 1 to 7 «characterized in that the tool ^{carriers (3 2} V, * f9 _s 50, 51) and the winding drums (k) have the devices required for building in pairs in a mirror-inverted arrangement« 9 · Device according to the claims. 1 to 8, characterized in that that the winding drums are rotatably mounted in frames (8) of carriages (9) guided on rails (12) and can be driven. 10. Device according to claims 1 to 9 _S, characterized in that the winding drums (4) can be driven by a central motor (25) via the coupling part (280) which can be swiveled to and from the carriage. 11. Device according to claim 10, characterized in that a shaft (26) mounted along all stations (A to E) The coupling part can be driven via drives (27) at each station (A to E). 12. Device according to claims 1 to 11, characterized in that that the winding drum (A-) in the frame (8) flying at one end stored and at the other end by means of approachable and retractable pins (Support 10) can be supported. 13. Device according to claims 1 to 12, characterized in that that the winding drums (4) by means of pressure medium-operated segments can be enlarged in diameter " * {h _a device according to claims 1 to 13s characterized in DATs ⁽¹ O © heatable wire end holder (2 * 0 have the winding drums ,, 15 ° device according to claims 1 Ms 1 ⁴ J-, characterized in that the first station (A) has work eyes for feeding and winding the core wires and the core lug (3), 509 824/04 58 16. Device according to claims 1 to 1 * J-, characterized in that that the second station (B) have tools for feeding and winding the core profiles (2). 17. Device according to claims 1 to 1 ^ f, characterized in that the further stations (G ₉ D) have tools (^ 9 »50) for rolling on the applied parts. 18. Device according to claims 1 to 1 * f, characterized in that that the end station (E) tools (51) for removing the finished Has bead rings. 19 · Device according to claims 15 and 16, characterized in that that the first two stations used for feeding profiles (A and B) essentially horizontally operating feeders (3 * 0 to the Winding drum can be moved in and out tangentially and has a gripper (38) for conveying material. 20. Device according to claims 15, 16 and 19, characterized in that at the end of a bottom (35) having a feeder (3 ¹ O a pressure and holding roller (36 or 37) is provided. 21. Device according to claims 15, 16 and 19, 20, characterized in that the gripper (38) is equipped with magnetic, pneumatic or mechanical devices and can be raised and lowered with respect to the feeder base (.35), 22. Device according to claim 19? characterized in that the feeder has a cutting device (40). Hanover, December 5, 1973
73-95 P / 102 G Hb / Ls 509824/0458