JPH0724844A - Method and apparatus for vulcanizing tire - Google Patents

Abstract

PURPOSE:To reduce a load of a conveying truck as a whole and to improve a vulcanizing efficiency of a tire by a smooth continuous use by sequentially repeatedly removing, carrying out a vulcanized tire and then bringing to assembly a crude tire. CONSTITUTION:A crude tire is sent to a control center 3 by a bringing lift 4, assembled in a split mold on a mold truck, the mold is reassembled, the mold truck is then sent to a transfer route end 7, and the split mold is brought to a vulcanizer 6 by crane conveying. After vulcanizing, the split mold conveyed from the vulcanizer 6 is reversely transferred to the mold truck 8 at the end 7, returned to the center 3, disassembled in the center 3, the vulcanized tire is released from the split mold 9, and sent by a conveying lift 5. In the case of reassembling, a crude tire 10 in the mold 9 is brought by the lift 4 moved together with an upper side cover 9a of the mold 9 to a right side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION A mold cavity having a complicated concave-convex mold surface corresponding to a tread pattern formed on the outer surface of a tire, particularly on the outer circumference, prevents the vulcanized tire from being released from the mold. Therefore, a so-called split mold is formed by forming the mold cavity with a large number of segments and including a wedge guide that can regularly expand and contract each segment in the radial direction, and upper and lower side covers that sandwich the wedge guide. It has been prized. A tire vulcanizing method capable of realizing rational loading and unloading for the split mold itself and the tire vulcanizing press at the time of vulcanizing a tire using such a split mold,
It is intended to provide a vulcanizing device.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 3-197007 discloses a work position for loading a raw tire, a work position for inserting a bladder, a plurality of vulcanization positions, and a bud removal for the entire mold block. It is disclosed that the loader, the unloader, and other equipment can be operated more efficiently by traveling between the working position for carrying out the work and the working position for unloading the vulcanized tire.

[0003]

The mold cavities are composed of a plurality of radially movable segments, a wedge guide and a so-called split mold, which is a combination of upper and lower side covers, are mounted on a mold carriage, and the vulcanizer is mounted on the mold trolley. The split mold is disassembled and released, the raw tire is loaded, and the split mold is then reassembled on the path leading to the transfer to the vulcanizer and the vulcanized split mold is disassembled. By centrally managing the unloading of vulcanized tires and integrating the logistics required for tire vulcanization to realize the rational operation of various facilities, and to propose a device therefor. This is the purpose of this invention.

[0004]

According to the present invention, a split mold placed on a mold carriage is introduced into a control center installed on a transfer path leading to a vulcanizer, and the split center is opened at the control center. While removing the upper side cover of the split mold and disassembling and then reassembling,
Through the control center, along the three-dimensional crossing path that makes a step difference with the above transfer path and intersects in a plane, the raw tire carry-in lift and the vulcanized tire carry-out lift that move alternately toward the control center Assembling the tire into the split mold, reassembling it, disassembling the split mold and taking out the vulcanized tire at the arrow control center,
The split mold reassembled by incorporating raw tires is guided to the vulcanizer from the control center by the mold truck through the transfer path, and then the split mold transferred from the vulcanizer to the mold cart through the transfer path passes through the transfer path after vulcanization. It is a tire vulcanization method characterized in that after returning to the management center, the split mold is disassembled, the vulcanized tire is taken out, carried out and then the above-mentioned raw tire carry-in and loading are performed again in sequence. The upper side cover of the split mold, which was separated before taking out the vulcanized tire from the split mold,
Suspend and hold by a carry-in lift to evacuate, and hold and hold raw tires and vulcanized tires by a carry-in lift and carry-out lift via a hanging hook that engages with the retaining ring of the bladder incorporated therein. Is advantageous to
Further, in order to carry out this method, a conveying path that should reach the vulcanizer of the mold carriage on which the split mold is placed, a three-dimensional crossing path that intersects the conveying path in a plane in a stepwise manner, and these two paths An alternate loading and unloading lift that can move toward the management center set in the intersection area.
Both lifts have a lifting hook that can be raised and lowered that engages with the retaining ring of the bladder that controls pressure during vulcanization inside the tire, and the carry-in lift hangs and holds the upper side cover of the split mold that has been separated. The tire vulcanizing apparatus is characterized in that it has a lifting hand that can be raised and lowered.

[0005]

The function path of the mold carriage controls the reciprocating movement of guiding the mold carriage from the mold shop to the vulcanizer via the control center and returning to the control center after vulcanization. A three-dimensional crossing path that intersects with this transfer path in a plane in a stepwise manner is a lift-in to the split mold of the raw tire and a split mold of the vulcanized tire from the control center set in the intersection area for the moving path. It is used for alternate reciprocating movement with the unloading lift. The control center carries out operations necessary for assembling the raw tire into the split mold introduced therein, reassembling the split mold, dismantling the split mold for taking out the vulcanized tire, and unloading the split mold thereafter, and their work.

In the case where the tire to be made here is an ultra-large tire used in an ore mine, for example, a robust track needs to be arranged in the transfer path of the mold trolley. The heavy split mold is not carried along with the entire mold, but it is sufficient for a comparatively light track because it is merely an alternate movement of the lift that suspends and holds the tire.

[0007]

EXAMPLES Examples of the present invention will be described below by using concrete examples of facilities that can be used for manufacturing tires for super-large construction vehicles. FIG. 1 shows a plan view of a main part of a tire vulcanization yard. In the figure, 1 is a traveling rail of a mold truck (transfer path), 2 is a traveling rail of a lift for transporting tires (overpass path), and 3 is both. The control centers 4 and 5 set in the rail crossing area are tire loading and unloading lifts, respectively, and 6 is a vulcanizer in which a split mold is conveyed from the transfer path end 7 by a crane in this example. Is.

Therefore, in this case, the raw tire carrying-in lift 4
To send it to the control center 3 and install it in the split mold on the mold carriage, and after reassembling the split mold, send the mold carriage to the transfer path end 7 and carry the split mold to the vulcanizer 6 by crane transfer. On the other hand, after the vulcanization, the split mold carried out from the vulcanizer 6 is, on the contrary, the transfer path end 7
Then, it is transferred to the mold carriage 8 and returned to the control center 3, where it is dismantled and the vulcanized tire is taken out from the split mold 9 and sent out by the carry-out lift 5 to proceed to the next step outside the system. The procedure of feeding the raw tires to and from the control center 3 is more apparent from the skeleton diagram of FIG.

In FIG. 2, the mold carriage 8 introduced into the control center 3 is shown in two modes, that is, immediately before reassembling the mold 9 (right side in the center of the figure) and completed (left side in the center of the figure).
In this reassembly, the raw tire 10 in the split mold 9 is
The carry-in lift 4 moved to the right from the position 4'in the upper part of the drawing together with the upper side cover 9a of the split mold 9.
The loading of the raw tire 10 onto the loading lift 4 is performed along the inside of the raw tire 10 exactly as shown in the right side of the figure, and the bladder that fits the bead portion of the raw tire 10 is loaded. A well-known inflatable bladder (not shown) having a retaining ring 11 is pre-inserted by a jig 12 and transferred to a pallet 14 having a centering guide 13 which fits into the lower web hole of this retaining ring 11. The pallet 14 is carried to a position just below the three-dimensional crossing path carrying-in end of the rail 2, and the suspending hook 15 engaging with the retaining ring 11 is once lowered from the carrying-in lift 4 to be lifted depending on the fulfillment of the engagement. After that, the carrying-in lift 4 is moved along the rail 2 to the 4'position, that is, immediately above the control center 3, and the lifting hook 15 is lowered again.

Prior to this loading, the carry-in lift 4 holds and holds the upper side cover 9a removed from the split mold 9 so that the unloading operation of the next vulcanized tire is not hindered. Further, a lifting lifter 16 capable of raising and lowering is provided on the carry-in lift 4. On the other hand, in unloading the vulcanized tire 10 ′, in lieu of the above-mentioned transfer of the upper side cover 9 a, the unloading lift 5 moved to the management center 3 is provided with the same lifting hook 15 ′ as that of the loading lift. It is carried out by hoisting up and down and hanging up and down on the pallet 14 'at the grade intersection path end.

Vulcanized tire 10 'on pallet 14'
From the above, the bladder is prevented from being pulled out in the reverse order of the procedure for inserting the bladder of the raw tire 10, the tire 10 'is advanced to the next step, and the bladder is reused.

3 to 5 show the details of the more specific structure in terms of a plane, a front surface and a side surface, and the description will be made for each main part with reference to these. Rail 1 or molded truck 8
As shown in the center of FIGS. 3 and 4, the transfer path is laid in the vertical direction of the paper surface of FIG. 3, in the direction perpendicular to the paper surface of FIG. The crossing path intersects the rail 1 in a plane as shown in FIG. 3, but the base 19 is embedded in the installation base B so as to make a step difference with respect to the rail 1 (see FIG. 5). Lay along the left and right as shown in Figs. In the figure, 8a is a wheel of the mold carriage 8 and 4a and 5a are wheels of the loading and unloading lifts 4 and 5.

An extension bracket 20 is provided on the girder 19 so as to coincide with the center of the rail of the rail 1. On the other hand, the loading and unloading lifts 4 and 5 are engaged and disengaged from the top piece of the extension bracket 20 by concave and convex engagement. The enabling latch piece 21 is provided to enable the lifts 4 and 5 to be centered with respect to the control center 3 at the process ends of their alternate movement towards the control center 3.

The split mold 9 on the carriage 8 is sandwiched between the upper side cover 9a and the lower side cover 9b, which have already been described, and has a wedge guide 9c having an inner surface of a concave taper adapted to the upward taper of the outer surface. Although not shown in the drawing, a well-known dovetail engagement will be used to make a large number of segments in which the mold cavity expands and contracts in the radial direction by moving up and down with respect to the wedge guide 9c along the center of the mold at the reduced position. It is designed to form a cavity corresponding to the outer shape of the tire, and also has a well-known bladder (not shown in the figure) that can fit the inner surface shape of the tire between the upper and lower side covers 9a and 9b.
Further, the bladder ring 11 having a mold surface that fits the bead portion of the green tire is sandwiched, and the lower side cover 9b has a guide flange 9d that fits the overhanging flange 11a at the lower end of the web of the bladder holding ring 11.

Clamp ribs 9e, which are respectively formed at the joints between the upper side cover 9a and the wedge guide 9c,
By providing a clamp ring 9g that is commonly used with 9f, and the club rib 9f and the clamp ring 9g are provided with notches on the circumference that can achieve concave-convex alignment at their twisting rotation positions, the upper side cover 9a can be formed. The wedge guide 9c, that is, the split mold 9, can be detached, and the clamping force therefor can be loosened and tightened.

As shown in FIG. 3, the split mold 9 is mounted on the mold carriage 8 at four positions around the wedge guide 9c by diagonally facing each other on the diameter thereof.
The clevis 23 at the tip of the piston rod is moved until it contacts the outer circumference of the wedge guide 9c by the two pairs of fluid pressure cylinders 22 arranged above, and an eyepiece provided on the outer circumference of the wedge guide 9c so as to fit the clevis 23. 24 is locked by a barb pin 26 that moves forward and backward by a fluid pressure cylinder 25, and a firm installation is achieved regardless of the size change of the split mold 9.

Mold truck 8 on which split mold 9 is placed
Is a fluid pressure jack 2 on a stand 27 with a jaw provided on the installation base B corresponding to the four corners of the mold carriage 8 for centering the mold 9 with respect to the control center 3.
8 until it reaches the limit by the chin, and during this time, the top piece 29 with the cone nose of the fluid pressure jack 28 engages with the recess (not shown) formed on the back surface of the floor plate of the mold carriage 8 to perform self-alignment. To do.

This heavy load also has the function of releasing the heavy load of the rail 1 due to the transmission of a large upright load acting on the split mold 9 when the split mold 9 is disassembled and re-joined. In order to maintain the concentric alignment between the mold carriage 8 and the carry-in lift 4 that has arrived at the management center 3, the restraint is performed by a pair of tie rods. Here, the tie rod 30 is an arm 34 which is swung by a vertical shaft 33 which is supported by a stand 32 provided on the column 19 and the column 31 on the installation base B across the grade intersection path.
In this example, the lock pieces 30a, 3 secured to the upper and lower ends of the tie rods 30 are rotatable by two pairs.
0b is engaged firmly with the jacks 35, which are arranged side by side in front of and behind the mold carriage 8, and the jacks 36, which are arranged opposite to each other on both sides of the carry-in lift 4.
Reference numeral 37 in the figure denotes a fluid pressure cylinder for swinging the tie rod 30.

In this state, the split mold 9 is disassembled. This is done when the first split mold 9 is introduced into the control center 3 and after the vulcanization, the split mold 9 is transferred from the vulcanizer to the control center 3. Similarly, when returning, it starts by loosening the fastening of the clamp ring 9g. That is, for example, a bifurcated claw 9h is provided on the outer circumference of the clamp ring 9g of the vulcanizing mold 9 so as to sandwich the diameter in the direction orthogonal to the rail 1 (see FIG. 3), and FIG.
As shown in (a), (b), and (c), a wrench roller 38 is installed that advances between the two claws 9h and applies a couple force to the clamp ring 9g to loosen the fastening of the upper side cover 9a. It is placed on the column 39 on the base B.

In the figure, reference numeral 40 is a fluid pressure cylinder for advancing the wrench roller 38, 41 is each fluid pressure cylinder for rotation, 42 is a guide slider, and 43 is a guide pin. In the drawing, the outer diameter of the clamp ring 9g is different. The fit in two cases is illustrated. In this way, the upper side gover 9
When the fastening of a is released, the wedge rib 9f of the wedge guide 9c and the clamp ring 9g can be removed at the dislocation position of the notch unevenness provided corresponding to each other. At this time, since the carry-in lift 4 is centered with respect to the control center 3 as described above, the upper side gover 9a together with the lifting frame 48 for removing the lifting hand 1 are lifted.
Drop 6

As for the hanger 16, the piston rod 47 of the fluid pressure cylinder 46 oppositely arranged on the cross beams 44 and 45 of the carry-in lift 4 is shown as illustrated after moving to the right side of FIGS. Cross beam 4
A rectangular hanging frame 48, which is mounted on the lower surface side through which Nos. 4 and 45 penetrate, is mainly composed of vertical shafts 49 which are rotatable at the four inner corners thereof, respectively, and more specifically, in FIGS. 7 (a) and 7 (b). As shown in the figure, at the lower end of the vertical shaft 49, the inverted T-shaped groove formed on the upper surface of the upper side cover 9a is locked by passing through the narrow width and then turning. Parts.

For this turning operation, the forward / backward displacement of the fluid pressure cylinder 51 is changed to the rotational displacement by the link mechanism 52 on the lifting frame 48, and the fluid pressure cylinder 53 is arranged for the lock for restraining the locking position. To do. In this way, the hoisting operation of the upper side cover 9a by the carry-in lift 4 is possible, but in order to prevent the swinging movement during its ascent, the columns 54 are set up on the upper surfaces of the four corners of the hanging frame 48, and their upper ends are As shown in FIGS. 8 (a) and 8 (b), a steady rest connected to the rectangular frame 56 via the brace 55 can be provided as needed. This steady rest is attached to the outer surface of the support column 54 to mount the rectangular guide rail 57 shown in FIGS. 8 (a) and 8 (b), while the V-groove roller group 58 rolling along the guide rail 57 is loaded and lifted. It is preferable to attach it to the brace 59 (see FIG. 3) at the four corners of the bogie frame of No. 4.

In this case, depending on the state of the load acting on the hanging frame 48, the rectangular guide rail 57 may slip, causing irregular tilting (stick flop) of the hanging frame 48, and the guide rail 57 there. The rack 60 is mounted in parallel with and the pinion 61 engaging with the rack 60 is fixed on both ends of the common shaft 62 with the pair of pinching the cross beam 45 on the carriage frame of the carry-in lift 4 as shown in FIG. 7 (b). It is more preferable that the pair is coupled to each other by a pillow block 63 using a miter gear so as to be synchronously rotatable.

In this way, the upper side cover 9a is suspended and held just below the transfer lift 4 and then the tie rod 3 is used.
After releasing the restraint by 0, the transport lift 4 is withdrawn, and the bladder holding ring 11 is attached to the lower surface of the upper side cover 9a in advance, and the pallet 14 and the raw tire stand 6 are attached.
4 (see FIG. 4), the raw tire 10 transferred onto the roller table is loaded, and the suspension and holding of the raw tire for that purpose is performed again with reference to FIG. A lifting rod 67 fixed to a piston rod and a guide shaft 66 extending downward through the beam of a fluid pressure cylinder 65 provided on the lifting disc 67 is provided with a large number of paddle-shaped hanging hooks as shown in FIGS. 9 (a) and 9 (b). While enabling rotation around a horizontal shaft pin 69 in which 15 are circumferentially arranged, a link 70 is provided near the free end of the hanging hook 15.
By connecting with the pin 71 and the link 70 with the end piece 68 of the coil spring 73, which is biased in the compression direction by the fluid pressure cylinder 72 in advance, also by the pin 74,
The simultaneous expansion movement of the suspension hook 15 based on the release of the fluid pressure cylinder 72 easily realizes the engagement of the bladder previously attached to the raw tire 10 with the retaining ring 11.

9 (a) and 9 (b), the holding ring 11 of the bladder having various diameters is adjusted by adjusting the initial compression margin of the coil spring 73.
The state of conformance to is summarized and illustrated. Needless to say, the application of the lift disk 67 to the carry-in lift 4 can be utilized as it is in the process of taking out the vulcanized tire from the split mold 9 and carrying it out by the carry-out lift 5. Here, 75 in FIG. 4 is a split mold 9 installed in the pit of the installation base B at the control center 3.
3, a reference numeral 76 in FIG. 3 is a motor for the mold carriage, 77 is a traveling motor for the carry-in lift 4, and 78 is a traveling motor for the carry-out lift 5.

[0026]

EFFECTS OF THE INVENTION Tires, especially super-large tires, are ideal for vulcanization. Loading of a raw tire into a split mold and unloading of a vulcanized tire should be performed farther from the vulcanizer in terms of working environment. When carrying out in a good place, functionally separating the loading and unloading routes of the raw tires and vulcanized tires from the transport route of the split mold that should reach the vulcanizer, so that the load of these transport trolleys can be reduced as a whole. As a result, the vulcanization work efficiency of the tire can be significantly improved by the continuous use.

[Brief description of drawings]

FIG. 1 is a layout diagram showing a basic configuration,

FIG. 2 is a skeleton diagram,

FIG. 3 is an overall plan view of the device,

FIG. 4 is a front view of the same,

FIG. 5 is a side view,

6 (a), (b) and (c) are a plan view, a front view and a side view of a loosening mechanism of an upper side cover,

7 (a) and 7 (b) are a plan view and a front view of a suspension holding mechanism of an upper side cover,

8 (a) and 8 (b) are a plan view and a 45 ° direction projection view of a lifting guide,

9 (a) and 9 (b) are a front view and a top-bottom composite view of a main part of a lifting disc for loading and unloading a tire.

[Explanation of symbols]

 1 Mold carrier transfer path (rail) 2 Carry-in / carry-out lift transfer path (rail) 3 Management center 4 Carry-in lift 5 Carry-out lift 6 Vulcanizer 7 Mold carrier transfer path end 8 Mold car 9 Split mold 10 Raw tire 10 ' Vulcanized tire 11 Bladder retaining ring 12 Pallet

Claims (4)

[Claims] 1. A split mold placed on a mold truck is introduced into a control center installed on a transfer path leading to a vulcanizer, and at the control center, the upper side cover of the split mold is opened according to the opening of the split mold. While carrying out dismantling and subsequent reassembly, the introduction of raw tires that move alternately toward the control center along a three-dimensional crossing path that passes through the control center and intersects the transfer path in a plane and intersects in a plane Lifting and unloading of vulcanized tires Assembling raw tires into split molds and reassembling them by lifts, disassembling split molds, and taking out vulcanized tires are performed at the arrow tension control center. The split mold reassembled from the control center is guided to the vulcanizer from the control center through the transfer path by the mold trolley, and then vulcanized and then molded from the vulcanizer. After returning the split mold transferred to the trolley to the control center through the transfer path, disassemble the split mold, take out the vulcanized tire, carry it out, and then repeat the above-mentioned loading and assembling of the raw tire. A method for vulcanizing a tire, which is characterized in that 2. The tire additive according to claim 1, wherein the upper side cover of the split mold separated prior to the removal of the vulcanized tire from the split mold is hung and held by a carry-in lift to be saved. Sulfurization method. 3. The raw tire and the vulcanized tire are suspended and held by a carry-in lift and a carry-out lift via a suspending hook that engages with a retaining ring of a bladder incorporated therein. 2. The tire vulcanization method described in 2. 4. A conveying path to reach a vulcanizer of a mold truck on which a split mold is placed, a three-dimensional crossing path that intersects with the conveying path in a plane in a stepwise manner, and a crossing area between these two paths. The loading and unloading lifts can be moved alternately toward the control center, and both lifts have lifting hoisting hooks that engage with the retaining ring of the bladder that controls pressure during vulcanization inside the tire. A tire vulcanizing device, wherein the carry-in lift includes a lifter that can be raised and lowered for suspending and holding the separated upper side cover of the split mold.