DE1252889B - Device for connecting the edges of two tire cord fabric sections - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

B29h

German class: 39 a6- 17/28

Number: 1252 889

File number: G 40232 X / 39 a6

Filing date: March 31, 1964

Opening day: October 26, 1967

The invention relates to a device for connecting the edges of two tire cord fabric sections with upper jaws, which are arranged by lifting cylinders on a cross member of the device are movable, and movable lower jaws, both at their free ends Have grippers with fingers interlocking in the clamping position, as well as with a stop rail for aligning the cord fabric sections to be connected.

There are already devices for butt-joining the edges of two obliquely cut tire cord fabric sections known in which a butt joint is made parallel to the cord fabric threads which, however, have a complicated structure. With machines of this type, the essentially a linear connecting movement is used to establish the tissue connection.

The present invention is based on the object of making a device comparatively simpler To create a construction with which the cord fabric sections are connected to one another in a very effective manner will.

This object is achieved according to the invention in the above-mentioned device in that the upper clamping jaws and the lower clamping jaws by one each in the area of the lower clamping jaws Shaft arranged parallel to the edges of the cord fabric sections to be connected for connecting the edges of the tissue sections from a slightly upward position into a clamping position are pivotable in which the jaws are substantially aligned with one another.

The inventive design of the device is achieved that the cord fabric sections to be connected from mutually inclined planes through a vertical oscillating movement of the clamping jaws, with the achievement of a leverage effect, come into contact and are pressed against one another. As a result of this lever action occurring on the clamping jaws, the opposite Edges of the cord fabric sections are firmly pressed against one another, and the rubber mass is both effectively connected to each other at the top as well as at the bottom of the connection.

According to an advantageous embodiment of the invention, the grippers are the lower jaws yielding from a common support device into its obliquely upwardly directed position pre-tensionable. The support device consists of one on one to open wide the lower jaws inflatable bellows supported footbridge. Of the

Device for joining the edges of two tire cord fabric sections

Applicant:

The General Tire & Rubber Company,
Akron, Ohio (V. St. A.)

Representative:

Dr.-Ing. W. Abitz

and Dr. D. Morf, patent attorneys,

Munich 27, Pienzenauer Str. 28

Named as inventor:

Virgil Estill Henley, Akron, Ohio (V. St. A.)

Claimed priority:
V. St. v. America October 21, 1963
(317556)

he clamping pressure of the upper and lower jaws can be controlled downwards during the joint pivoting. The clamping pressure is by means of the Internal pressure of the bellows can be controlled via the web.

The device is explained in more detail below with reference to the drawings using an exemplary embodiment explained. In the drawings shows

F i g. 1 shows a plan view of the device for connecting the edges of two tire cord fabric sections, with parts being omitted,
FIG. 2 shows a longitudinal section through the device according to FIG. 1 along line 2-2 in FIG. 1,

3 shows a side view of the clamping jaws,

with parts omitted or shown in section, FIG. 4 shows a cross section through the clamping jaws according to FIG. 3 along line 4-4 in FIG. 3, which are in the open position,

F i g. 5 shows a cross section through the clamping jaws according to FIG. 4 along the line 4-4 in FIG are in the closed position,

F i g. 6 shows a partial section along the line 8-8 in FIG. 5 with the arrangement of the interlocking Fingers of the lower clamping jaws in the closed position, FIG. 7 shows a partial plan view of several to be connected Tire cord fabric sections in which the threads run parallel to the connecting line,

FIG. 8 shows a partial longitudinal section along the line 10-10 in FIG. 7,

709 679/241

3 4

Fig. 9 is a partial cross-section through the clamping- The fourth wave, which is different from the other three

bake according to Fig. 3 along the line 4-4 in Fig. 3 differs somewhat, as will be explained below,

with a deflected web is denoted by the reference numeral 7 α. Each of the

Fig. 10 is a line diagram of the device shafts 7 and la has an end section 8 with the pneumatic system used, 5 reduced diameter, which is from the inner bearing

11 shows a partial side view of the clamping jaw part 6 from towards the center of the connector head D. FIG

ken protruding with a cam arrangement on one side of which. After assembly, each Hegt

and shaft 7 and la coaxial with another shaft 7

Fig. 12 is a partial front view of the cam on the opposite side of the connector head,

arrangement according to Fig. 11. IO on each shaft7 and la between each pair

As shown in Fig. 1 and 2, the front of bearing parts 5 and 6 is a pivot block9,

Direction for connecting the edges of two tires which is connected to the shaft and rotatable with it

cord fabric sections from a frame, a to- Between the swivel blocks9 and the adjacent

Guide B for the sections, a puller the bearing parts 5 and 6 are discs 10 around the

deviceC and a connector head D, which limit a positional 15 lateral movement of the swivel block,

tion for a toggle working on two of the pivot blocks 9 are on each side

Connector unit E forms in which the longitudinal center line of the connector head D to be connected is upper

Sections along the edges to be connected clamping jaws 12 and 13 of the connector unit E

be clamped by pivoting grippers. The upper jaws 12 and 13 extend

those that are similar to the Hebehi of a toggle system ao away from their blocks 9 inwards towards one another

to be moved to a central position in which the and are about the axes of the shafts 7 and la between

edges to be connected are pressed against each other. see an upper receiving position according to FIG. 4

The frame can have the other arrangements in and a lower connector position according to FIG. 5

appropriate height above the ground. pivotable.

The feed B includes a device for feeding 25 to the upper jaws 12 and 13 are along the

introduce the sections, the inside edges running in the connector head D grippers 14 and 15, preferably

with the edges to be connected in precise identification in the form of metal plates. Of the

direction should be connected. The Abziehvor- gripper 14 has on its inner edge at a distance

direction C includes a device for the present projecting fingers 16, which with corresponding

slide the web formed from the sections 30 chenden fingers 17 of the gripper 15 interlock,

a, with the newly connected section after Wenn, however, the jaws 12 and 13 in their upper

each connection process through the connector head position, the fingers are, as shown in Fig. 4 to

is deducted. The puller C closes, completely separated from each other,

furthermore a device for re-establishing the to the inwardly projecting end sections

free edges of the straight connected portion 3S th 8 of each of the shafts 7 and la is rotatably one

in the connector head, so that another Ab- bearing sleeve 18, which is in a recess 19 of a

cut can be connected to it. Pivot block 20 is attached. On both of them

As shown, the connector head D between pairs of pivot blocks 20 at opposite ends of the frame., 4 are mounted and extending the sides of the longitudinal center line of the connector head D via the device in an angle parallel to Rieh- 40 lower clamping jaws are fixed 21 and 22. The tong of the threads in the sections to be joined. lower jaws 21 and 22 are opposite to each other

Which are arranged by the work of the pre-illustrated that they are about the axes of the shafts 7

the direction of the fabric web is best from and la between an upper take-up position

Figs. 7 and 8 can be seen, which from their measure Fig. 4 and a lower connector position

Edges connected to one another, diagonally cut 45 according to FIG. 5 are pivotable.

Sections of a cord fabric is assembled, on the lower jaws 21 and 22 along them

wherein the composite edges are parallel to the threads inner edges are the grippers 14 and

lie, and to build a tire with parallel, 15 similar grippers 23 and 24 attached to the

Threads running diagonally across the web are used. the lower jaws the gripping surfaces of the upper

The connector head D consists of a base 1, 50 grippers 14 and 15 opposing gripping surfaces

who sits on the frame A. On the base 1 are, form. The grippers 23 and 24 have at a distance of-

As can be seen from FIGS. 3 and 4, two metal tube projecting, interlocking fingers

prop 2 attached. On the supports 2 are end faces 25 and 26 at their inner edges. The fingers 25

plates3 attached, which forehead supports4 grip on the gripper 23, as shown in Fig. 6, between

where the upper part of the connector 55 see the fingers 26 of the gripper 22. The gripper 14,

head is attached. 15, 23 and 24 of the upper and lower jaws

Also attached to each face plate 3 are two pairs of bearings receiving shafts in front of the material in order to improve the gripping effect, the surfaces 27 of which are preferably opposite, roughened or grooved with each pair of laterally aligned bearing parts 5.
and 6, which serve as pivot bearings for the grippers 60. The upper and lower jaws on each side of that of the connector head D. As in Fig. 3 shown form the longitudinal center line of the connector head D with two bearing parts 5 at each end of the opposing gripper pairs of clamping head D in the area of the supports 4 and two jaws, which between them the edges of the fabric bearing parts 6 at each end of the Connector head sections in the area of the desired connection inward of the bearing parts 5 attached. Seize the four 65 lines. The projecting fingers of each pair of bearing parts 5 and 6 each axially pair are fitted so that the fingers 16 of the above-aligned bores for receiving a shaft, Ren gripper 14 vertically and three of them with the reference numeral 7 opposite the finger. 25 of the lower gripper 23 and that the fingers

5 6

17 of the upper gripper 15 vertically with your fingers to make a secure uniform connection of the lower gripper 24 are in alignment and the dwell time sufficient for this opposite binding will be on top. Ren jaws 12 and 13 in the one shown in FIG

If the pairs of jaws are raised into their position shown in FIG. 4, while the lower jaws21 are moved in their upper position, they remain in their lowest position in FIGS. 5 and 22, so that the distance from one another so that the edges of the The web is exposed to such an extent that it can be peeled off past the alignment-binding fabric sections between them 31. The lower leads can be. Once the jaws 21 and 22 have been properly aligned, the jaws are then raised to the position shown in Fig. 4 of the edges between the jaws to close the connectors on the sections so that they connect the sections in the area to be ready for a new connection process to determine the edges. Appropriate gripping devices. After the actuating of the jaws held in this way for the implementation of the above be-pieces are fixed, the pairs of jaws identical movements are provided,
down in an approximately horizontal position at the top of the carrier 28 are two in

according to FIG. 5 moves and thereby the edges of the webs 33 and 34 extending in the longitudinal direction are attached tire fabric sections so pressed against each other, brings. On the webs 33 and 34 four brackets 35 are attached in a longitudinal direction that the rubber over the entire length of the device, spaced apart, joint is glued. each of which carries a pair of pneumatic cylinders 36,

After the connector unit E has been arranged in FIG. 5 is held, the four pairs of cylinders for actuating the upper jaws 12 and 13, as in Fi g. 9, serve in upper jaws 12 and 13. Each bracket 35 has pivoted its upper position, whereupon the track has a front and a rear web 37, which receive pivot pins 38 with the just connected section to the front, which are at the top of a new connection process by 35 end of the cylinder 36 so that this right the connector head D is removed. are pivotable at an angle to the carrier 28.

A cross member 28 is attached to the supports 4. The pistons 39 of the cylinders 36 are on their

which forms a support for the upper part of the lower end by means of parallel to the swivel truss head D and the swivel pin 41 arranged in the longitudinal direction pin 38 runs on brackets centrally to the head D. A second carrier 29 30 40 mounted, which is attached to the upper jaws 12 and 13 just below the carrier 28 carries, in order to support them, as shown in FIG. 5 and 9 at opposite ends see bracket 30 for attaching, lowering or lifting,
an alignment rail 31. The alignment rail 31 The clamping jaws 12, 13, 21 and 22 are independent of the support 29 and extend in the longitudinal direction depending on one another between their uppermost and the head D. Their flanks extend downward 35 their lowermost positions. The upper obliquely towards each other, so that a narrow lower jaws 12 and 13 are formed only by the cylinder 36 edge, which is actuated between the inner edges, which is for lifting the jaws 12 and 13 of the upper gripper 14 and 15 when this in independent of the lower jaws 21 and 22 in their uppermost position, according to FIG. 4 and 9, serve their uppermost position, which is at the top so that they can be a device for aligning the 40 movement limit at the top dead center of the piston edges of the tissue sections to be connected 39 in order to form a downward pressure on the when the Sections at the beginning to be exercised in the jaws in order to apply the clamping pressure to the binding head. To apply the side surfaces connecting sections and one of the alignment rails 31 have grooves 32 for pressing down on the lower jaws 21 and 22 would take the ends of the fingers 16 and 17 of the upper 45 to exert. There are corresponding arrangements in front of grippers 14 and 15, as in FIG. 3 shown so that seen in order to provide a variable resistance to an unimpeded pivoting movement of the upper movement of the jaws 21 and 22 downwardly open-jaws 12 and 13 is possible. bring to the on the sections during the

The lower jaws 21 and 22 have smooth upper pressing to regulate the pressure to be applied. Sides over which the sections to be connected in 50 are also provided adjustable arrangements, Rest on opposite sides of the excerpt allowing the lower jaws to move upwards straightening rail 31 can be moved when the and down limit and the lower Jaws of the connector unit £ in the jaws shown in FIG. 4 from their lowest position according to FIG. 5 position shown. After the edges of the return to their uppermost position according to FIG. 9, 55 Between the supports 2 there is a support plate lying sides of the rail 31 brought into contact 42, which, as shown in FIG. 3, on blocks 43 are, the upper jaws are down into the in on the base 1 in the area of their opposite F i g. 2 pivoted position shown so that it is supported on the sides. The support plate 42 forms a clamp the sections to be connected. The knee support for a number of inflatable pneulike arranged grippers are then at the same time 60 matic bellows 44 for applying the desired down to the position shown in Fig. 5 th resilient resistance to movement pivoted while the edges of the jaws 21 and 22 to be connected downwards during the comparison time be held horizontally aligned, the binding process to reset the lower and their abutting edges are the jaws in their uppermost position according to FIG. 9, after through the toggle action of the grippers, each connection process is inflated Pressing exposed so that they are along the bar.

Glue the connecting line securely. After one for a pressure transmission part, which consists of a

the required flow of the plastic rubber is flat, horizontal, resting on the bellows 44

7 8

Plate 45 and a longitudinal vertical one 69 below the conveyor table 61. As shown firmly in FIG. 2 with the upper side of the plate in its center, each feed belt 60 is then deflected, bound web 46 engaging the jaws and runs over a tensioning roller 70 on a pivot, serves to transfer the through the Cylinder arm 71, through which the feed belt 60 is held under tension by means of a 36 pressure exerted downwards on the bellows 44, 5 corresponding arrangement so that the movement of the jaws downwards is the z. B. can be a helical spring 75, resiliently resilient resistance through the air in which on a rod 76 attached to the frame A , the bellows is opposed. Through the bellows and which rests against the arm 71 so that a pressure feed belt 60 can be exerted upwards on the lower jaws 21 and 22 under a desired tension in order to hold this in its uppermost position.

Position returned after the connecting belts 60 form a conveyor that moves with

Process is finished. uniform speed on the connector

The web 46 is located directly under the alignment head D to move the tissue sections to the

31. Its upper edge engages the inner edges to promote connector head D. To the tissue

the lower jaws 21 and 22, so that the gripper 15 sections on the connector head D with the

23 and 24 simultaneously during the vertical movement binding edges parallel to the alignment rail 31 zn

the jaws are kept horizontally aligned. lead, a straight guide rail 72 is on the

The lowest position of the lower jaws 21 and left edge of the feed table 61, at which the left 22 is through adjustable stops 47, which are attached to the support plate on the edge of the incoming tissue section 42, as shown in FIG. 3, attaches 20. To get the section in precise alignment with th cans 48 are limited. The ends of the guide rail 72 to hold are between the Web 46 slide in vertical guides 49, which they feed belts 60 to at a small angle idle movement rotatable against frontal, lateral and tilting axes of the roller 62 rollers 73 mounted on their path up and down. To lead a minor sideways. The uppermost position of the lower jaws 21 25 lent thrust to exert the tissue section, and 22 is limited by adjustable stop screws 50, which are sufficient to keep them in contact with the guide, which is to hold against at the top of the rail 72, but is not so large that it Supports 2, as shown in Fig. 3, attached to a corrugation of the section are the um-tabs 51 create. The catch surfaces of the rollers 73 are provided with bristles 74,

11 and 12 show cams on the shaft 7α, 30 which protrude slightly above the belts 60 and

the control switches depending on the movement on the underside of the section that corresponds to the

of the upper jaw 13. The shaft Ta has to be fed to the binder, engage,

longer than the three other shafts 7 The puller C includes a discharge

and runs through an end support 4 a. table 77, which in the direction of the connector head D

The shaft Ta has an end section 52 which is displaceable towards and away from it. The return

reduced diameter on which a cam 53 upward and forward displacement of the discharge table

seated, which rotates 77 with the upper jaw 13 takes place by means of a pneumatic cylinder 83,

and in the form of a segment from the shaft la to the pivotable with one end on the frame A

runs up. is stored and its piston can be pivoted with a

The upper peripheral surface of the cam 53 acts with 40 cross members 84 connected to the discharge table 77. At the

Switch actuating rollers 56 together and, like the discharge table 77, has a pulling roller

12, raised guide cam portions 54 85 attached to a cross shaft 86. A strap

and 55 on the opposite edges of their surrounding washer 87 at one end of the shaft 86 can by means of

Catch surface, which are driven as pressure members for control of a belt 88 so that the

Actuate rollers 56 serving the switch. 45 Web advanced after joining

The feeder B, which is the bevel cut. To a slip between the disc 87 and

To prevent cord sections from the connector head D to the web is above the roller 85

leads, includes a row of side by side - an idler roller 89 mounted so that they the web

the parallel feed belts 60 which press longitudinally against the roller 85,

direction over a feed table 61 and the 50 In the area of the connector head D is a metal

can be seen most clearly in Figs. The guide strips90 at a distance slightly above the

Belts 60 run over drive rollers 62 arranged on the table 77 and run over these par-

receiving end of the feed table 61, which is defined by an allele to the longitudinal axis of the connector head D, which is the

corresponding arrangement, e.g. B. a drive belt inclination of the track to be in the area of the connector head

63, which counteracts it to wave upwards via a pulley 55 f. Someone specific

64 runs at the end of a drive shaft 65 on which the excess in the length of the web on the table 77

Drive rollers 62 sit. is desirable in order to allow the web to stretch during

In the area of the connector head D run the rend to prevent the movement of the jaws. A belt 60 over a series of idle rollers 66, the bulging rod 91 is attached to the table 77 outside of the guide strips 90 which are adjustable on bearings 67 in bearing supports 68 and 60 in the vicinity thereof. Are superimposed, which is set transverse to the assembly at about the rod 91 is located parallel to the strip 90 and at the same angle to which the connector head D single connector head D and causes a corrugation of the web, are adjustable, and which also so transverse to the Strips can be adjusted along a line parallel to the line that they correspond to every angle, connecting line and to the reinforcing thread in which the connector head D is set, so that a track length of such an extent can be detuned. The feed belts 60 cross the table so that the tension on the web is minimized 66 and back over a second set of rolls and over the entire width of the web during the connection process 61 from the drive rollers 62 to the idler rollers.

9 10

The valve 97 controls the supply of compressed air

connecting cord fabric sections firmly clamped on the pneumatic bellows 44 and is made of a and edge to edge pressed together in such a way that the position in which the bellows with the compressed air source a substantially uniform spacing of the connected, in a position in which the pressure Threads is achieved. As shown in Fig. 4, 5 locked and the bellows with a relief gripping first the fingers of the jaws are connected to the line 98, adjustable. A pressure edging the tissue sections in areas in control valve 99 holds in the pressure relief line which are a multitude of parallel cords. a predetermined reduced pressure in the During the first part of the connecting stroke, in bellows 44 during the movement of the clamping jaws which the fingers of a pair of the clamping jaws upright downwards and thus secures a small clamp the fingers of the other pair of jaws press between the upper and lower jaws insert, the tissue sections are firmly inserted during the connection process. The valve 97 jams so that the threads against displacement as being in its pressure relief position during the Result of the edge pressure held down on the movement of the clamping jaws to be connected, Edges are held. The pressure acts in each 15 while it is brought into the pressure feed position, the gap between one in the fingers around the jaws 21 and 22 in their uppermost to adjust clamped section of a part and an intermediate position.

the fingers lying portion of the other part, the valve 95 is operated so that pressure on the so that the elasticity of the between the fingers, cylinder 36 is relinquished to avoid pinching lying edges too high a pressure of thread ao of the sections and the swinging down to the against thread prevented. Towards the end of the implementation of the connection through the clamp binding stroke to reduce the clamping pressure to effect baking. After the connection hub, so that a slip between the grippers and the valve 95 in its pressure shut-off position and Entzu connecting tissue sections is possible. ventilation position adjusted so that the spring-loaded

After the free end of a piston 39 that has just been connected, tensioned the upper jaws 12 and 13 of the tissue section through the connector head D to return to their uppermost position,
is running, the piston of the pneumatic cylinder pushes The valve 96 is in a position for supply

Otherwise 83 the discharge table 77 inward on the pressure of the cylinder 93 to the table 77 up connector headD and places a new connector on the connector head during the connection stroke Binding stroke to move the edges of the free end against the 30, and is in the sense of a reversal Alignment rail 31 on. the pressurization to move the table

The pneumatic system of the device, which moves 77 away from the connector head after the clamping jaws and discharge table 77 has actuated, the connection stroke has ended.
is shown schematically in FIG. The system The valve97 is set at the beginning of the connection consists of a compressor motor 92, a grain stroke 35 in pressure relief position and in the pressor pump 93, a collecting tank 94, three pressurization positions for inflating the electromagnetically operated valves 95, 96 and 97, bellows 44 and for moving of the lower jaws in the pneumatic bellows 44 for actuating the lower clamping jaws 21 and 22, which are lower at the end of the connection cycle, eight pneumatically adjusted.

table cylinders 36 for actuating the upper 40 are at the beginning of each connection process Clamping jaws 12 and 13 and a pneumatic the jaws 12, 13, 21 and 22 in their uppermost, in Cylinder 83 for moving the discharge table 77. F i g. 4 position shown, the to be connected Valves 95, 96 and 97 control the pressurized tissue section with its free edge in impact from the collecting container 94 on the cylinder system on the alignment rail 31 and the the 36, the cylinder 83 and the bellows 44. 45 rollers 85 are stopped. A business to be connected

The piston 39 of the pneumatic cylinder 36 weaving section is placed on the driven belts 60 standing in the direction of their top dead center below, whereby the section is spring biased on the connector so that the upper jaws 12 and head D is advanced until the leading edge of the 13 is normally to receive the tissue section on the rail 31. When the sections are in their top position. The 50 connecting portion reaches this position, valve 95 regulates the supply of compressed air to which the movement of the belts 60 is stopped, and after a cylinder 36 and is from a closed position, in the short time the cylinders 36 are actuated so that the supply of compressed air in the cylinders - they press the jaws downwards. When the lock begins and the cylinder is released into the atmosphere, the clamping jaws are released downwards, in an open position for the feed 55, valve 97 is actuated so that the bellows 44 with the release of compressed air into the cylinder, as in Fig. 10 dargeplastungsleitung98 are connected and from the pressure represents, adjustable. be relieved, so that the clamping pressure of the jaws

The cylinder 83 for actuating the discharge table against the sections on the way of the jaws according to 77 is to be operated in such a way that the table on the bottom gradually decreases, the control head D being displaceable towards and away from the valve 99 so set that a lower one is over. The valve 96 controls the supply of pressurized pressure to the bellows 44 so that air is maintained to the cylinder 83 and is of a position to provide a clamping pressure sufficient to hold the compressed air on one side of the cylinder 83 on the sections while the edges are exposed and the other side is vented to the atmosphere in order to make the connection pressed against one another, in order to urge the piston in one direction. When the clamping jaws hit their lowest, in a second position, in which the connection position shown in Fig. 5, the pressure will be reversed to fertilize the cylinder in the opposite direction to the upper jaws 12 and 13 to act on, adjustable. agreed short time held to a sufficient

Claims (5)

To cause the rubber to flow at the junction between the edges of the sections to be connected and to ensure a secure bond between these edges. After the short period of time, the valve 95 is returned to its normal position in which the pressure on the upper ends of the cylinders is vented to the atmosphere so that the bias springs return the pistons 39 to their uppermost position, thereby placing the upper jaws 12 and 13 in the in F i g. Reset position shown in 9. The rollers 85 are then operated for a predetermined period of time so that they pull off a predetermined length of the web corresponding to the width of the section just started; at the same time, the cylinder 83 is actuated to slide the table 77 away from the connector head D to quickly withdraw the free end of the web to a position outside the jaws. The valve 97 is then actuated in such a way that air is again applied to the bellows 44 and thus the jaws 21 and 22 are raised to their uppermost position according to FIG. At this time the rollers 85 are stopped and the cylinder 83 is urged in the opposite direction, so that the table 77 moves towards the connector head with the free end of the web moving over the lower jaws 21 against the alignment rail 31 returns. A section of fabric to be connected to the web is then placed on the straps 60 and inserted into the connector head, whereupon the working cycle described above is repeated. The operation of the feed, the clamping jaws and the extraction device in the sequence described above can be achieved in the most varied of ways, but a corresponding automatically operating control is preferably provided. Patent claims: 1. Device for connecting the edges of two tire cord fabric sections with upper ones 40 clamping jaws, which are movable by means of lifting cylinders arranged on a cross member of the device, and movable lower clamping jaws, both of which have grippers at their free ends with fingers interlocking in the clamping position, as well as with a stop rail for aligning the cord fabric sections to be connected, characterized in that the upper clamping jaws (12, 13) and the lower clamping jaws (21, 22) each around a shaft (7, 7a) arranged in the area of the lower clamping jaws (21, 22) parallel to the edges of the cord fabric sections to be connected for connecting the edges of the Tissue sections are pivotable from a slightly upward position into a clamping position in which the clamping jaws are substantially aligned with one another. 2. Apparatus according to claim 1, characterized in that the grippers (23, 24) of the lower Clamping jaws (21, 22) resiliently in their from a common support device obliquely upward position can be biased. 3. Apparatus according to claim 2, characterized in that the supporting device consists of one on a bellows (44) which can be inflated to open the lower clamping jaws (21, 22) wide Web (46) consists. 4. Device according to claims 1 to 3, characterized in that the clamping pressure the upper and lower clamping jaws (12, 13; 21, 22) during the joint pivoting is controllable downwards. 5. Apparatus according to claim 4, characterized in that the clamping pressure by means of Internal pressure of the bellows (44) can be controlled via the web (46). Considered publications:
German Auslegeschrift No. 1143 016;
French patent specification No. 1225 897. In addition 3 sheets of drawings 709 «9/241 10.67 © Bundesdmckerei Berlin