JPS5922739A - Tyre vulcanizer - Google Patents

Abstract

PURPOSE:To enable a metallic die to maintain parallelism by a method wherein an upper metallic die is connected to a nut engaged with a screw bar for elevation through the intermediary of a spring. CONSTITUTION:A bracket 16 is fixed to the periphery of a bolster plate 7 whereto an upper metallic die 11 is fixed and a nut 18 is provided on the bracket 16 through the intermediary of Belleville spring 17. The nut 18 is elevated by means of threading itself into a screw bar for elevation 5 driving the screw bar 5 to elevate an upper metallic die 11 through the Belleville spring 17, the bracket 16 and the bloster plate 7. The main purpose of this elevation is to adjust the metallic die thickness. The die fastening of the upper and lower metallic dies 11, 12 may be performed by means of a hydraulic cylinder 2 provided under the lower metallic die 12.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a hydraulic tire vulcanizer of a type that applies clamping force to a mold.

With conventional hydraulic tire vulcanizers. A cylinder has been used as a means to open and close (raise and lower) the upper mold. In case of cylinder drive. The relatively narrow space around the vulcanizer is occupied by the piping connected to these cylinders.
Additionally, there is a possibility that the operating medium of the cylinder may leak from the ring hole or pipe joints, requiring a great deal of effort and nerves to maintain this. or. If a large amount of cylinder operating medium leaks from the piping line, it is possible that the 1L unloading device (upper mold, upper hot plate, upper bolster plate, etc.) will fall from a high position due to its own weight. Also from the safety standpoint of the vulcanizer operator.

It is not always acceptable to use cylinders to open and close vulcanizers.

If two or more lifting cylinders are used for one mold. In order to maintain the parallelism of the mold, it is necessary to pay sufficient attention to its synchronization control.

Therefore, the present invention was made in 1.7 with the aim of eliminating the above-mentioned drawbacks due to the cylinder lifting/lowering drive.
The present invention is. To raise and lower the upper mold. It is pulled by the lowering drive. Adopting a threaded rod and a drive device to rotate it.

When clamping force is applied to the mold of the vulcanizer by the pressure cylinder, the drive nut and upper metal screw are tightened to prevent a large clamping force from being applied to the lifting threaded rod and causing damage to the A screw. To provide a tire vulcanizer characterized in that a spring having an appropriate spring force and stroke is interposed between the tire vulcanizer and the mold part.

The present invention will be explained based on a first embodiment shown in FIGS. 1 to 4.

A tire vulcanizer has a frame that supports the pressure of the tire vulcanizer.1. A pressurizing cylinder 2° installed in the pace part IIL of the frame l for applying a tightening force to the upper and lower tire molds 11 and 12, which are divided into upper and lower halves, supports the tire lower mold 12 via the lower heating plate 1o. Lower mold support plate (lower bolster plate) 8
゜Upper mold support plate (upper bolster plate) for fixing the tire upper mold 11 via the upper hot plate 97. Tire upper and lower mold 1
1. The tightening force applied in 12 is applied to the upper bolster plate 7.
It consists of a support column 15 and a jam plate 14 that transmit the information to the frame 1 via the support column 15.

Here, the jam plate 14 is used when the tire upper mold 11 and the upper Porsche plate 7 are raised after vulcanization.

In order to allow the support column 15 fixed on the upper bolster plate 7 to pass through the hole 13 provided in the center of the two beams 1b of the frame 1 and protrude above the frame 1, it is moved from the center of the press. It is equipped with an air cylinder, etc. (not shown) in order to obtain the desired results. In this vulcanizer, the upper tire mold 11 is raised and lowered as shown in FIG. This is achieved by engaging the bolts and nuts 17a and 17bVc, screwing the driving nut 18 with the lifting threaded rod 5, and rotating this threaded rod with the electric motor 3 via the bevel gear 6 reduction gear 4.

In addition, in this embodiment, when the tightening hydraulic pressure is insufficient,
The stroke of the hydraulic cylinder is made small to prevent tire pressure bursts due to the opening of the upper and lower molds, so adjustments are required to accommodate changes in mold thickness.
Upper beam 1b Nibeam Nasoto 19. Beam screw 20° intermediate screw 22. A driving device 21 and the like are provided.

Upper bolster plate 7 of vulcanizer, upper hot plate 9° upper mold 1
When 1 is integrated and opened above the frame 1 of the vulcanizer, 1 is an unvulcanized tire loading device called a loader (not shown).

The unvulcanized tire is inserted into the lower mold 12 inside the vulcanizer from outside the vulcanizer.
A relatively weak steam pressure is applied to the inner surface of the unvulcanized tire C via the post mechanism Avc assembled Prada B installed at the center of the tire lower mold 12 shown in FIG. While supporting the unvulcanized tire C on the tire lower mold 12.

The loading device for the unvulcanized tire C is pushed out of the vulcanizer.9 Next, the electric motor 8 rotates the lifting screw rod 5 to assemble the upper polster plate 7, the upper heating plate 9°, and the upper tire mold 11. lower it. After the tire upper mold 11 comes into contact with the upper bead of the unvulcanized tire C as shown in FIG. An upward force is applied to the upper heating plate 9 through the upper heating plate 9. At this time, the lifting screw rod 5 pushes the tire upper mold 11 downward against the upward force.

As shown in FIG. 8, the disc spring 17 interposed between the bracket 16 and the drive nut 18 is slightly compressed by this upward pushing force. This disc spring 17 leaves a sufficient compression allowance until the tire upper mold 11 comes into contact with the lower mold 12. In this way, the vulcanizer lifts the lifting threaded rod 5.
The jam plate 14 shown in FIG. 1 is fed into the center of the vulcanizer from the outside, and the upper beam 1
b After blocking the through hole 18, the hydraulic cylinder 2 is pressurized and a tightening force acts on the upper and lower tire molds 11 and 12. At this time, the gap between the jam plate 14 and the beam screw 20, the gap between the jam plate +4 and the support 15, and the amount of so-called frame elongation in which the frame 1 is stretched or bent due to the pressurizing force. The upper bolster plate 7 is lifted downward by the total dimension including bending loss, height, etc. Therefore, at this time, as shown in FIG.
The l11 spring 17 is further compressed than the state shown in FIG. 3, and becomes as shown in FIG. Most of the money for the upper and lower tire molds 11.12 is generated by the hydraulic cylinder 2, and the upper heating plate 9. Upper bolster plate 7, strut +5. Although some of the clamping force is transmitted to the frame l via the jamming plate 14, a small amount of the clamping force is applied (brakeno)+6. Belleville spring 17. It is transmitted to the lifting screw rod 5 via the drive nut 18. The tightening force transmitted to the lifting threaded rod 5Vc is determined by the compression amount of the spring 17 from the state of the Belleville spring 17 shown in FIG. 2 (mostly the free length of the spring) to the state shown in FIG. The amount corresponds to the product of the spring constants. In other words, the lifting screw rod 5Vc only needs to be given enough strength to withstand this force.

In this embodiment, a highly reliable and safe high-precision vulcanizer can be realized by employing hydraulic pressurization and a screw lifting method, and by incorporating a disc spring 17 into the driving pad 18, the upper and lower tire molds 11° 12 pressure force drive nut 18. This can prevent an adverse effect on the lifting screw rod 5.

Next, a second embodiment shown in FIGS. 6 to 8 will be described.

This example is a connected annular vulcanizer, forming a so-called Pu'er cavity vulcanization press having left and right vulcanization zones, and this vulcanizer is constructed as follows. Lower beam 32 provided below each vulcanization zone. Pressure cylinder 33 provided on the lower beam 32. The upper mold support plate (lower bolster plate) 40 transmits the pressurizing force of the pressurizing cylinder 33 to the upper and lower tire molds 11 and 12 via the lower heating plate 1o, and further the tire upper mold 11 is connected to the upper heating plate 9. Upper mold support plate (upper bolster plate) for fixing via: 15. The upper bolster plate 85 and the lower beam 32 are provided with body plates 88 and 8, respectively.
9 is fixed, and each tip has a flan) 87.86
will be established. In particular, the flange 87 is the connecting ring 4 that engages with the dough.
1 and δ constituting the so-called pre-lock, the flange 37. As shown in FIG. 5, the connecting ring 41 is equally pinched.

At the end of vulcanization, the connecting ring 41 is rotated by one pitch around the flange 37 using a hydraulic cylinder or the like, and the locked state of the flange 37 and the connecting ring 41 is released from K to prevent the upper bolster plate 35 from moving upward. I try not to become

The device that moves the upper tire mold 11 upward after vulcanization and opens the vulcanizer includes a lifting beam 34 that connects the upper pole scoop plate 35 of the left and right gear 1 pitey, and a threaded rod 43 for lifting the lifting beam 34. The screw connection is constructed as shown in FIG. That is, a lifting threaded rod 43 is installed through a hole provided in the center of the lifting beam 34, and a driving nut 45 is installed on the 3-disc spring 469 and the disc spring 46, and is screwed onto the lifting threaded rod 43. A flange 47 for engaging the drive nut 45 and suspending the lifting beam 34. Bolts 499 for fixing the flange to the lifting beam 84 Spring guide cylinder 4 for preventing the inner diameter of the disc spring 46 from interfering with the threaded rod 43 when the disc spring 46 is compressed
It consists of 8th grade. Furthermore, in order to accurately vertically raise and lower the lifting beam 34 as a device for opening the vulcanizer, as shown in FIG. No support frame 41. Support frame 4
1" is installed on the 2nd side, and is connected to the threaded rod 43 for lifting,
Assembly of electric motor and reducer for this rotational drive 5
Consists of 0 etc.

The main aspects of the connected ring type vulcanizer are the same as those of the frame type vulcanizer of the first embodiment, and only the differences will be explained here. After the tire upper mold II approaches the tire lower mold 12 and the pressurizing force is activated by the pressurizing cylinder 83, the dimension in which the upper Porsche plate 35 floats upward is determined by the connecting ring 41.
and the gap size existing between the flange 86.37.

Furthermore, the total dimension is the amount of elongation i of the body plates 38, 8'9 which are elongated by the pressurizing force, and the amount of deflection of the nibole star plate 85, etc., so the disc spring 4 shown in FIG.
6 is given a sufficient stroke to absorb this dimension, and after the unvulcanized tire is brought into the center of the tire lower mold 12, steam pressure is introduced into the tire lower mold 12.
When pushing down the tire upper mold 11 from the unvulcanized tire, the pushing and lifting force of the tire upper mold 11 has enough strength to prevent the disc spring 46 from being greatly compressed or brought into close contact. It is imperative to provide specific specifications.

Since the operation and effect are the same as those in the first embodiment, detailed explanation will be omitted.

Above is the first aspect of the present invention. Although the description has been made based on the second embodiment, the present invention is not limited to these two embodiments, and in the two embodiments, the pressurizing cylinder is arranged at the bottom of the lower mold. For example, it is also possible to install a pressure cylinder on the upper beam and pressurize the upper mold through the support.Also, depending on the force and stroke of the 9 disc spring, it can cause coil springing, etc. It is also possible to replace it with an elastic body of 9 dimensions.If a type with high power transmission efficiency such as a so-called ball screw type is used for the lifting threaded rod, the motor must be energized to prevent the upper mold from falling due to its own weight. It is also possible to employ an open type brake. Further, in the first embodiment, a so-called single-cavity vulcanizer with one mold is described, but a multi-cavity type as in the second embodiment is also possible in the same manner as in the first embodiment.

Also, instead of a spring inserted into the drive nut part, the drive screw part can be slid in the axial direction with the drive side by 9 rotations using a sliding key or spline, and an elastic body such as a spring is incorporated in the sliding part. is also possible.

[Brief explanation of the drawing]

Figures 1 and 6 are respectively 1. Front view of the second embodiment, second
The figure is an enlarged sectional view of the H part in FIG. 1, and FIGS. 3 to 5 are first explanations of the operation of the first embodiment. FIG. 7 is an enlarged sectional view of the part ``■'' in FIG. 6, and FIG. 8 is a view taken along the arrow ``■--■'' in FIG. l...Frame, 2.88...Pressure 7 cylinder. 3...Electric motor, 4...Reducer, 5.48...Elevating threaded rod, 6...Bevel gear, 7.35...Upper bolster plate, 8.40...Lower bolster - plate, 9
...Upper hot plate, 10...Lower hot plate, 11...Tire" 2 molds. 12... Tire lower mold, 18. Hole, 14... Jama plate. 15... Support column, 16... Bracket, 17.46.
...Disc spring, 18.45...Drive nut, +9...
Beam nut, 20... Beam screw, 21... Drive device, 22... Intermediate screw, 32... Lower beam, 38.
89... body plate, 86, 87.47... flange, 34...
・Lifting beam. 41... Connecting ring, 44... Guide rod, 48... Guide tube. 49...Bolt, 50...Assembly. Nagasaki Heavy Artillery Revision No. 1 No. 1 Mitsubishi Heavy Industries Nagasaki Shipyard & Machinery Works

Claims (1)

[Claims] In a tire vulcanizer in which an upper mold part that can be raised and lowered is brought into close contact with a lower mold part, the tire can be extended vertically. A tire vulcanization system characterized in that a driving nut is engaged with a lifting threaded rod rotated by a driving device, and the driving nut and the upper mold part are connected via a spring so as to move up and down as one unit. Machine.