JPS6218217A - Vulcanization press - Google Patents

Abstract

PURPOSE:To shorten the time of exchange with small drop in preheating temp. and to immediately restart vulcanization operation, by collectively removing and exchanging the whole mechanism for adjusting bugs having a bottom force and a bladder from the main body. CONSTITUTION:In vulcanization operation, when the kind of tire T to be vulcanized is changed, the bottom force 34 set on a pallet 33, the mechanism for adjusting bugs 45 and the top force 42 set on the bottom force 34 are lifted up in a body and are horizontally pushed forward to move to the position shown by an imaginary line. These top and bottom forces 42, 34 and the mechanism for adjusting bugs 45 are then exchanged by a forklift with the set of top and bottom forces 42, 34 and the mechanism for adjusting bugs 45 to be used next, which have been preheated outside to a required temp., and bladder 49 of the mechanism for adjusting bugs 45 has been also exchanged outside with the corresponding type before preheating.

Description

DETAILED DESCRIPTION OF THE INVENTION - 1,000 1) This invention relates to a vulcanizing press machine for vulcanizing green tires.

In recent years, the tire industry has begun to produce a wide variety of tires in line with the diversification of user requirements. For this reason, for example, in the vulcanization process at a tire manufacturing factory,
:The upper and lower molds 2 and 3 of the vulcanizing press machine 1 shown in Fig. FS6 are frequently replaced to support this high-mix, low-volume production. Since vulcanization cannot be started unless the molds are heated to a predetermined high temperature, a lot of time is required for the upper and lower molds 2.3 to be heated by the upper and lower platens 4 and 5, and the operation of the vulcanizing press 1 is delayed. rate was low. Therefore, next time you use it.

The lower mold was preheated outside the vulcanization press 1 to shorten the heating time.

However, in the conventional vulcanizing press fi+, the lower mold 3 interferes with the crumbling ring 7 that grips the vulcanizing bladder 6. After attaching 2 and 3 to the press body 8, it is necessary to attach the vulcanizing bladder 6 and the crumbling ring 7 to the bug adjustment mechanism IO.For this reason, it takes time to attach the bladder 6, etc. At the same time, during such work, heat is radiated from the upper and lower molds 2 and 3 and their temperatures drop, necessitating reheating.

As a result, there was a problem in that the operating rate of the vulcanization press 1 was still low.

□ To solve this problem, the lower mold and bug adjustment mechanism should be connected together, and the lower mold and bug adjustment mechanism should be removed and replaced from the main body all at once. This can be solved by

First, when vulcanizing a green tire, the green tire is loaded into the lower mold, the upper mold is lowered, and the upper and lower molds are closed.Next, the bladder is placed inside the green tire. The green tire is vulcanized by applying a predetermined high temperature and pressure to the inflated state. When vulcanization is complete, the upper mold is raised, the upper and lower molds are released, and the vulcanized tire is taken out. Next, if there is a change in the type of tire to be vulcanized, it is necessary to replace at least the upper and lower molds and the bladder, but in this invention, the bug adjustment mechanism including the lower mold and the bladder is integrated into the main body. The lower mold and bug adjustment mechanism that will be used next time are brought in and attached to the main body. At this time, the bladder and bladder ring can be attached to the bag adjustment mechanism being carried in beforehand outside the vulcanizing press machine, so there is no need to attach the bladder etc. after the carrying-in operation, and as a result, , the time can be shortened, and even if preheated, the temperature will hardly drop. Note that the upper mold may be placed on the lower mold before being carried in and attached to the main body, or alternatively, it may be carried in alone and attached to the main body.

Rin Goken Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1.2, 21 is a foundation frame, and a lower frame 23 is attached to this foundation frame 21 via a plurality of legs 22. Vertical guide posts 24 are erected at the four corners of the lower frame 23, and an upper frame to which a cylinder (not shown) is connected is fixed to the upper ends of these guide posts 24. An elevating frame 2B that ascends and descends while being guided by a guide post 24 is attached to the tip of the piston rod 25 of the cylinder. Pressure post 27
is installed. The aforementioned foundation frame 21 and legs 22
, lower frame 23. The guide post 24, the upper frame, and the elevating frame 26 constitute a main body 28 as a whole.

A heat insulating material 31 is placed on the lower frame 23 as shown in FIG.
, and lower platens 32 are attached in a stacked manner. 33 is a pallet placed on the lower platen 32, and this pallet 33 has a lower mold 34 which is heated by the lower platen 32 and has molding recesses 35 formed on the upper surface thereof.
is removably attached. This lower mold 34 is
The pallet 33 is pressed against and fixed to the lower platen 32 by the locking means 38 shown in FIG. 1, and is detachably attached to the main body 28. The locking means 38 includes a locking link 37 that is pivotable and swingable around the center, and a hydraulic cylinder 38 that swings the locking link 37 and presses one end of the locking link 37 against the pallet 33.
It consists of An upper platen 40 is fixed to the lower surface of the lifting frame 26 via a heat insulating material 39, and an upper mold 42 paired with the lower mold 34 is secured to the upper platen 40 by a locking means 41 similar to the locking means 38. Fixed. The upper mold 42 is heated by the upper platen 40, and has a molding recess 43 on its lower surface that cooperates with the molding recess 35 to define the outer shape of the green tire T during vulcanization, as shown in FIG. It is formed like this. 1st.
In Figure 2.3, numeral 45 is a bug adjustment mechanism for operating a bladder, which will be described later.
At the upper end of this outer cylinder 46, a lower end of a bladder 48 that can be bent via a lower hold ring 44 and a lower clamp ring 48 is provided, while at an upper end of the center post 47, an upper hold ring 50 and an upper The upper end of the bladder 49 is clamped via a clamp ring 51. Furthermore, 52
53 is a lower clamp ring hub that connects the lower hold ring 44, the lower clamp ring 48 and the outer cylinder 46, and 54 is a fluid for vulcanization, for example. This is a supply pipe that supplies the fluid to the bladder 49. The outer cylinder 46 of the bug adjustment mechanism 45 is connected to the balent 33 via the connecting body 55, and thereby the bug adjustment mechanism 45 is integrally connected to the lower mold 34 via the pallet 33. become. In this way, the lower mold 34 and the bug adjustment mechanism 45 are integrally connected via the pallet 33, and the pallet 33 is detachably attached to the main body 28, so the shape of the pallet 33 is partially changed. It can be easily applied to various existing vulcanization press machines by simply making changes. In addition, in this invention, the said pallet 33 may be omitted and the lower mold 34 and the bug adjustment mechanism 45 may be directly connected. A flange 58 is provided at the lower end of the outer cylinder 4B, and this flange 58 has a pair of flange 58 for supplying and discharging fluid into the outer cylinder 46 to control the vertical movement of the center post 47, as shown in FIG. 4.5. A supply/discharge joint 59 and a pair of supply joints 60 for supplying fluid to the supply pipe 54 are provided. On the other hand, a cylinder rod 1 is erected directly below the flange 58, and an elevating plate 6 is provided at the tip of a piston rod 62 of this cylinder 61.
3 is installed. A joint 64 and a joint 65 connected to the supply/discharge joint 59 and the supply joint 60, respectively, are attached to this lifting plate 63, and these joints B4 and 65 are connected to an operating and vulcanizing fluid source via piping (not shown). are connected to each. Moreover, 66 is a pair of guide pins inserted into holes 67 formed in the flange 58. These joints 59 and 64 and 60 and 65 are connected to the lower mold 34 and the bug adjustment mechanism 45 to the main body 2.
8, the elevating plate 63 is raised to connect them to each other. In this way, the joints 58 and 60 are provided on the flange 58, and the joints 84 and 65 are provided on the lifting plate 63, and the joints are connected by bringing the flanges 58 and the lifting plate 83 close to each other. , piping work can be performed easily and with high efficiency. In addition, 68 is a locking means having the same structure as the locking means 36, and these locking means 68
When the joints 59.64 and 60.65 are connected, the flange 58 is pressed against the lifting plate 63 and fixed. Again, in FIG. 1.2, reference numeral 71 denotes a pair of elevating bodies extending in the front-rear direction that are supported by the guide post 24 so as to be movable up and down, and a guide rod 72 parallel to the elevating body 71 is fixed to each elevating body 71. ing. A movable block 73 is movably supported by each guide rod 72, and each movable block 73 has pins 7 inserted from below into holes (not shown) formed at both ends of the pallet 33.
4 are provided. 75 is a pair of vertical cylinders fixed to the lower frame 23;
The tips of the piston rods 7B of No. 5 are connected to the elevating body 71, respectively. Furthermore, cylinders 77 parallel to the elevating body 71 are respectively attached to the elevating body 71, and the tips of the piston rods 78 of each cylinder 77 are connected to the movable block 73, respectively. The aforementioned elevating body 71, guide rod 72, movable block 73, cylinder 7
5. The cylinder 77 as a whole constitutes a moving means 79 for moving the lower mold 34 and the bag adjuster vI45, which are connected together, in the front-rear direction and up-down direction for carrying in and out. When the lower mold 34 and the bag adjustment mechanism 45 are carried in by this moving means 78, as shown in FIG.
) is fitted into the guide ring 82. This guide ring 82 is removably attached to the center of the lower platen 32. As a result, when the fitting part 81 is fitted to the guide ring 82, the main body 28, the bug adjustment mechanism 45, the upper and lower molds 42. 34 and are mutually centered. For this reason,
Centering work can be performed with high efficiency.

Next, the operation of one embodiment of the present invention will be explained.

When vulcanizing the green tire T, the green tire T is carried into a vulcanization press machine and placed on the open lower mold 34.

At this time, the center post 47 has risen and protruded, and the bladder 48 has a substantially cylindrical shape. Next, the elevating frame 26 is lowered, and the fluid is injected into the bladder 49 without lowering the center post 47. supply bladder 49
expand into a toroidal shape. Then, the upper and lower molds 42
．． 34 closes, the upper mold 4 is released via the pressure boss 27.
2 is firmly pressed against the lower mold 34 and a predetermined high temperature and pressure is applied to vulcanize the green tire T. When the vulcanization is completed, the upper mold 42 is released and the vulcanized tire is taken out. Then, by sequentially repeating such operations, the green tires T are vulcanized one after another.

During such vulcanization, if there is a change in the type of green tire T to be vulcanized, the upper and lower molds 42, 34 and bug adjustment mechanism 45 are replaced with corresponding types. In this case, first,
'jI Lower the frame 26 and remove the upper mold 42 and the lower mold 3.
4, the lock means 41 is unlocked. As a result, the upper mold 42 is simply placed on the lower mold 34-H, and the elevating frame 26 is then raised to return to the standby position. On the other hand, the openings 7 of the locking means 36 and the locking means 68 are also released, and the lower mold 34 and the pallet 33 are released.
, the bug adjustment mechanism 45 is released from the main body 28. At this time, the piston rod 78 of the cylinder 75 is projected, as shown by the solid line in FIG. 1.2. As a result, the movable block 73 comes into contact with both ends of the pallet 33 from below, and the pins 74 are inserted into holes (not shown) and positioned. When the movable block 73 further rises in this state, a
The placed upper mold 42 is lifted up as a whole to the position shown by the imaginary line in FIG. Next, cylinder 77
When the piston rod 78 is projected, the upper and lower molds 4
2.34, the bug adjustment mechanism 45 is pushed horizontally forward and moved to the position shown by the imaginary line in FIG. The bug adjustment mechanism 45, the upper and lower molds 42, 34, and the bug adjustment mechanism 45 to be used next time are replaced. At this time, the upper and lower molds 42 and 34 and the bag adjustment mechanism 45 for next use have been preheated to a predetermined temperature externally, and the bladder 49 of the bag 3I adjustment mechanism 45 has been preheated to the corresponding type. After being replaced externally, the moving means 79 moves the lower mold 42.34 and the bug adjustment mechanism 4 for next use.
5 and then lower it. At this time, the fitting part 81 of the bug 2gI adjustment mechanism 45 is guided by the guide link 82 and its relative position is corrected, so that the upper and lower molds 42.3
4. The bag adjustment mechanism 45 is centered on the main body 28 by simply descending. Next, when the lifting plate 63 is raised, the joints 59 and 64, and 60 and 85 are connected to each other. In this way, the connection work of the joint is completed simply by raising the elevating plate 63 to its width, making the work easy and highly efficient.Next, the locking means 68 locks the flange 58 and the elevating plate 63, and the locking means 36 fixes the pallet 33, the lower mold 34, the bag adjustment mechanism 45, and the main body 28. Next, after lowering the elevating frame 26, the upper mold 42 is fixed to the elevating frame 26 by the locking means 41. In this way, it is not necessary to replace the bladder 49 during the replacement work, so the replacement work is shortened.
Further, the preheating temperature hardly decreases, and as a result, the vulcanization operation can be resumed promptly.

Note that the vulcanization process can also be automated by combining the vulcanization press machine and an automatic guided vehicle. In this case,
It is preferable to transfer the molds and the like by moving the molds and the like up and down at the positions indicated by the imaginary lines in FIG.

As explained above, according to the present invention, the efficiency of the replacement work is improved and there is almost no drop in the preheating temperature, so the operating rate of the vulcanization press can be improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention. Figure 2 is a right side view of the same, Figure 3 is a sectional view of the upper and lower molds and the vicinity of the bug adjustment mechanism, Figure 4 is a sectional view taken along the line A-A in Figure 1, and Figure 5 is the $4 figure. FIG. 6 is a cross-sectional view of the upper and lower molds and the vicinity of the bag adjustment mechanism of a conventional vulcanizing press machine. 28...Main body 34...Lower mold 42...
・Upper mold 45... Bug adjustment mechanism 49...
Bladder patent applicant Brideston Co., Ltd. Agent Patent attorney Tao 1) Toshio Fig. 1 28...Main body 34...Lower mold 42...Upper mold 45...Bag adjustment mechanism 49 Bladder Fig. 2 Figure 4 Figure 5

Claims (1)

[Claims] The main body, a lower mold that is removably attached to the main body, an upper mold that is supported by the main body and can be raised and lowered to form a pair with the lower mold, and the upper and lower molds work together to vulcanize the green tire. In a vulcanizing press machine equipped with a bug adjustment mechanism for operating a bladder, the lower mold and the bug adjustment mechanism are integrally connected, and the lower mold and the bug adjustment mechanism are connected together from the main body. A vulcanizing press machine characterized by being designed to be removed and replaced.