SU927539A1 - Unit for moulding and vulcanizing pneumatic tyres - Google Patents

Description

one

The invention relates to the manufacture of pneumatic tires and is intended to form and vulcanize tires.

A known apparatus for molding and vulcanizing tires of pneumatic tires, comprising stationary vulcanizers installed in a row, having steam chambers formed by locking upper and lower housings with bayonet locks, molds with upper and lower ring sections and retracting into associated with lower ring sections molds cylindrical diaphragm cups with central valve elements, and a reformer reformer movable along a row of vulcanizers, having a yoke with keys for opening and closing yvani bayonet locks and re displacements upper housings steam square measures plungers for ejecting orifice of the finished tire and mechanisms

for loading raw and unloading finished tires ff).

However, the constructive implementation of a reformer reformer in a known installation does not allow the sector molds to be used in its vulcanizers, which limits the operational capabilities of the installation, since it does not allow it to be used for the manufacture of radial tires.

The aim of the invention is to expand the operational capabilities of the installation.

To achieve this goal, an installation for molding and vulcanizing tires of pneumatic tires containing fixed vulcanizers installed in a row, having steam chambers formed by upper and lower housings locked with bayonet locks, molds with upper and lower ring sections and retractable cylindrical diaphragm cups with central valve elements mounted with the lower annular sections of the molds, and a reformer formator movable along a series of vulcanizers, having a traverse with keys for opening and closing bayonet locks and moving the upper bodies of steam chambers, plungers for pushing diaphragms from finished tires into cylindrical cups and mechanisms for loading raw and unloading ready tires, reformer-forwarder is equipped with mechanisms for axial movement of upper ring sections of molds with respect to upper hulls Narova cameras.

In addition, each mechanism for axial movement of the upper annular sections of the molds relative to the upper housings of the steam chambers is designed as a movable sleeve mounted on a traverse concentric to the plunger and driven, and a grip for connecting the sleeve to the upper annular section of the mold.

At the same time, the grip for connecting the sleeve with the upper annular section of the mold is made in the form of a housing fixed at the lower end of the movable sleeve with grooves installed in the latter radially movable sliders interacting with the upper annular sections of the molds and hingedly mounted on the body of two shoulder arms , one shoulders interacting with the plunger, and the second associated with the sliders.

Figure 1 shows the proposed line; figure 2 is the same, the view in the plan; in fig. 3 shows a section A-A in FIG. in fig. 4 - the same, at the moment of pushing the diaphragm by the plunger from the finished tire; in fig. 5 - the same, at the time of unloading the finished tire; in fig. 6 shows a mechanism for the axial movement of the upper annular sections of the molds relative to the upper bodies of the steam chambers.

The installation for molding and vulcanization of tires of pneumatic tires contains stationary vulcanizers 1 installed in a row and connected to each other, mobile form along them, torus recharge 2 and end sections 3 intended for its maintenance and repair.

Each vulcanizer 1 contains two steam chambers mounted on a table, formed by the upper 5 and lower 6 (FIG. 3) housings having central openings 7 and locked with a bayonet lock 8. The steam chambers are equipped with molds having the upper 9 and lower 10 annular sections and radially movable sectors 11 forming the tread portion of the tire. In the Central hole 12 of the upper annular sections 9 are made annular grooves 1 3 and the window 1 (figure 4). The upper bodies 5 of the steam chambers have conic guides 15 interacting with sectors 11 with grooves for accommodating the shanks 16. The lower annular sections 10 are fixedly connected to the lower housings 6 steam chambers, and cylindrical cups 17 are installed in the central openings 7 for retractable diaphragms 18. Glasses 17 have conduits 19 and 20 for supplying the working fluid to the diaphragms. Diaphragms have central valve elements, for example, in the form of metal balls 21.

The upper annular sections 9 of the molds are installed with the possibility of axial movement relative to the upper housings 5 of the steam chambers and are in constant contact with the upper parts of the sectors 11. On the vulcanizers 1, the rails 22 are installed to move the reloading former 2 containing the frame 23 being moved on rollers 2 on rails 22 by means of a gear motor 25. On the side frames of frame 23 in L-shaped guides 2b is mounted a yoke 27 with keys 28 for opening bayonet locks 8 steam chambers and moving their upper buildings s 5 together mounted with bayonet locks 8, the upper annular sections sektormi 9 and 11 molds. The yoke 27 is mounted for movement in the vertical and horizontal directions along the L-shaped guides 26 of the frame 23 by means of two lever-cam mechanisms (not shown) located on the sides of the frame. Traverse 27 by means of brackets 29 and rollers 30, placed in the grooves of the cheeks 31, is connected to the mechanism 32 (FIG. T) of loading the raw tires. The latter moves with the crosspiece 27 when it is retracted and rotates due to the interaction of its gears 33 with stationary gear racks 3 of the frame 23 until the axes of its cartridges 35 align with the axes of the lower annular sections 10. At the crosshead 27 coaxially with the keys 28 are installed with the possibility of vertical movement plungers 36 for pushing out of the gothic tires of diaphragms 18 into cups 17 with a drive including gears 37 and a hydraulic cylinder 38. Plungers 36 are made with conical sections 39 and shanks 4o acting on metal balls 21. Forms Ator-recharge l-k 2 is equipped with mechanisms for axial movement of the upper annular sections of the molds relative to the upper housings of steam chambers, each of the mechanisms is made in the form of a movable sleeve 1 mounted on the yoke 27 concentric with the plunger Zb and the grip k2. Sleeve 1 is pressed into sleeve 1, which are sliding bearings for plunger 36. Sliding bearings for movable sleeve tl are used as sleeves of crosshead 27. In sleeve 41 there is a groove tS through which gear 37 passes for engagement with the toothed rack k6 of the plunger. The drive of the mobile sleeve can be carried out by any of the known mechanisms. In this particular case, the drive is carried out by a hydraulic cylinder 17 (Fig. 2). The grip k2 is made in the form of a slot kB with grooves fixed at the lower end of the movable sleeve installed in the latter radially under the slider kS sliders, interacting with the annular grooves 13 of the upper sections 9 and hingedly mounted on the double-arm casing 50 Each of the levers 50 has on one shoulder roller 51. interacting with plunger 36, and on the other - ball head 52 interacting with slider 9. Hydraulic cylinders 53 are designed for turning keys 28 53 There is an oil station 5 for feeding hydraulic cylinders with oil, mounted on frame 23 Reformer Format 2 has mechanisms 55 for unloading finished tires and roller tables 56. The installation works as follows. When the vulcanization is completed, the first vulcanizer 1 reformer 2 formator moves to it, stops and fixes coaxially with its steam chambers. The cross member 27 is lowered by means of lever-cam mechanisms (not shown) until its keys 28 are put on the upper bodies 5 of the steam chambers and stopped. In this position, the kS sliders are located opposite the annular groove 13. After this, pressure is applied from the oil station 5 in the cavity of the hydraulic cylinders 53 of the keys 28 and the hydraulic cylinder 38. The keys turn and open the bayonet locks of the 8 steam chambers. At the same time, the plungers 36 move downwards and act in conical sections 39 on the rollers 51 of the double-arm levers 50, turning the latter counterclockwise, as a result of which the sliders slide out and enter the annular groove 13 of the upper annular section 9 of the mold, hooking the movable sleeve with the latter. The plungers 36, continuing to fall, abutted by the shanks 0 into the balls 21 of the diaphragms 18 and through the windows 1 pass into the cavity of the molds, pushing the diaphragms 18 out of the finished tires 57 into the cups 17 (Fig.). After that, the yoke 27 is raised, holding the upper bodies of the 5 steam chambers with keys 28. At the same time, the plungers 36 are raised and stopped at the position when their tapered sections 39 have not reached the rollers 51 of the two shoulders 50. When lifting the yoke 27 in the cylinders 47 of the movable sleeves 41, the pressure is maintained to hold the upper ring sections 9 of the molds pressed to the bottoms of the upper bodies 5 steam chambers and sectors 11 in a closed position. Due to this, the finished tires 57 are separated from the lower annular sections 10 of the molds and move with the crosshead to the unloading position. When moving in the horizontal direction, the yoke 27 carries along the loading mechanism 32. When the finished tires 57 are aligned with the unloading mechanism 55. The yoke 27 stops when

Thereby, the cartridges 35 with wet tires 58 are arranged coaxially with the lower annular sections 10 (Fig. 5). Raw tires 58 are mounted on the side rings of the lower ring sections 10 of the mold with the cartridges 35 of the loading mechanism 32 and the diaphragms 18 are filled into them with the supply of forming steam to the cups 17. After that, the cartridges 35 are folded and raised.

Simultaneously with the loading of the raw tires 58, the finished tires 57 are unloaded as follows.

The pressure from the oil station S is applied to the hydraulic cylinders 7. The movable sleeves i are lowered together with the upper annular sections of the 9 molds held by means of sliders ii9.

The upper ring sections: 9, in this case, with their shoulders, abut against the upper ends of the sectors 11 and move the latter axially down and radially outward along the grooves of the guides 15 of the upper housings 5 of the steam chambers, which are kept from moving with keys 28. Sectors 11 are separated from the finished tire 57 and freeing the tread portion thereof. Then, the gripping elements of the unloading mechanism 55 are lifted, seize the finished tires for the lower bead, separate them from the upper annular sections 9 of the molds and place them on the roller tables 56, along which the tires 57 roll down a conveyor for the elimination or the installation for cooling (not shown).

After this, the yoke 27 is moved to the closing position of the bayonet locks, returning the loading mechanism 32 to its original position. When lowering the yoke 27, the upper ring sections 9 of the molds run over the raw tires 58 that are on the side rings of the lower ring sections 10 press -forms with a given pressure of the forming steam in the diaphragms 18, and upset them.

The first phase of forming raw tires is carried out.

In this case, the hydraulic cylinders 47 maintain the pressure at which they develop a force exceeding the effort to form a raw tire. Traverse 27 continues to lower and

the movable sleeves 41 stop, and the working fluid begins to be squeezed out of the hydraulic cylinders through safety valves (not shown). The upper bodies 5 of the steam chambers, lowering together with the cross-beam 27, begin to interact with the sectors 11 of the conical guides 15 and press them into the tread portion of the damp tire. This is the second phase of forming a raw tire, at the end of which the sectors II are closed with each other, forming a ring. The upper annular sections 9 of the molds abut against the bottoms of the upper bodies of the 5 steam chambers.

At this moment, the plungers of the Zb are raised and the shanks 0 turn the two shoulders levers 50 clockwise, the latter are reduced to the center of the sliders, their output from the annular grooves 13 of the upper annular sections

9 molds. At the same time, the keys 28 close the bayonet locks of 8 steam chambers. The process of vulcanization of raw pups begins. Traverse 27 rises to its original position, and reformer reformer Dchik 3 unlocks and moves to the next vulcanizer 1. Thus, reformer 2 format serves alternately all incoming vulcanizers i in line, and then returns

to the first vulcanizer, in the molds of which by this time the vulcanization process was over.

The proposed installation has a low metal content and laboriousness and allows the molding and vulcanization of radial tires with metal cord.

Claims (3)

1. Installation for molding and vulcanization of tires of pneumatic tires, containing fixed vulcanizers installed in a row, having steam chambers formed by upper and lower housings locked with bayonet locks, molds with upper and lower ring sections and retractable into associated with lower ring sections molds cylindrical diaphragm cups with central valve elements, and a format perezarchik movable along a series of vulcanizers with a traverse with keys for opening and closing Lock-up locks and movement of the upper bodies of steam chambers, plungers for pushing diaphragms out of finished tires and mechanisms for loading raw and unloading finished tires, characterized in that, in order to expand the operational capabilities of the installation, reformer formatter is equipped with mechanisms for axial movement of upper ring mold sections relative to the upper bodies of steam chambers. 2. Installation according to claim 1, wherein the mechanism for axial movement of the annular mold sections relative to the upper bodies of the steam chambers is designed as a movable sleeve mounted on the yoke concentric to the plunger and provided driven, and gripping to connect the liner to the upper annular section of the mold. 3. Installation according to claim 2, which means that the grip for connecting the sleeve with the upper annular section of the mold is made in the form of a housing fixed at the lower end of the movable sleeve with grooves installed in the latter radially movable sliders interacting with the upper ring sections of the molds, and. hinged on the body two shoulders, one shoulder interacting with the plunger, and the second associated with the sliders. Sources of information taken into account in the examination 1. Patent of Great Britain tf lA6it355, cl. In 5 A, pub. 1977 (prototype). 15J