JPS5912828A - Tyre vulcanizing press - Google Patents

Abstract

PURPOSE:To prevent any undesirable opening of molds with a high safety as well as a low cost and in a mechanical manner, by connecting upper and lower frames through side frames, and providing a mold thickness adjusting means on one of the frames. CONSTITUTION:A predetermined pressing force applied by means of a pressure cylinder 7 is transmitted to an upper mold 5 through a spacer 8. Thus, if the fluid pressure in the pressure cylinder 7 should lower during vulcanization, the amount of opening between the upper and lower molds 4, 5 will be extremely small; therefore, it is possible to prevent any accident due to gushing of a vulcanizing medium. Upon completion of the vulcanization, conversely, the pressing force applied by the pressure cylinder 7 is removed, and then the spacer 8 is pivoted to the outside of side frames 3 so as to be located at such a position as not to interfere with an upper frame 1, the pressure cylinder 7 and so forth which are disposed thereabove. In consequence, a lifting table 6 can upward move, and it is made possible to take out a vulcanized tyre.

Description

[Detailed description of the invention] A hydraulic tire vulcanizing press (/C
It is related to

In the conventional tire curing press described above, in order to carry the vulcanized tire into the mold, the stroke of the lifting table is approximately 1000 mm in the case of a passenger car tire press, and approximately 1,000 mm in the case of a bus tire press. The stroke of the hydraulic cylinder that tightens the mold is correspondingly long, so when curing the tire.

If a pressure drop occurs due to a leakage of the seal in the hydraulic cylinder, the gap between the mating surfaces V of the upper and lower molds will exceed the opening limit, and the vulcanizing medium inside the mold ( There is a risk that steam, high-pressure hot water, high-temperature, high-pressure gas) may blow out to the outside, so conventionally, in order to deal with this force, high-cost parts such as Shishiko Bleach Chronokuri/G were used, or pressure switches were used. Although devices such as liquid 11 control have been provided, these devices cannot necessarily be said to be optimal as a means for eliminating the gap between the upper part 1 and the mold.

The present invention also solves the above-mentioned difficulties in the conventional tire vulcanizing press V.The upper frame and the lower frame are connected by side frames, and the upper mold part is located between the upper frame and the lower frame. In a tire curing press, a pressurizing cylinder and a spacer are all arranged between the upper frame and the upper mold part, and either one of the pressurizing cylinder or the spacer is attached to the A mold thickness adjustment means (I-Setting Q) is provided on either the upper frame portion or the lower frame portion so that it can be moved to a position outside the side frame so as not to obstruct the lifting and lowering of the mold portion. Further, the present invention is characterized in that a pressure cylinder, a spacer, and a jammer plate are disposed between the upper frame and the upper mold part, and the jammer plate is used to prevent the upper mold part from rising and lowering. The mold is moved to a position outside the side frame so that the side frame does not become erroneous.
The purpose is to provide a tire curing press that is safe, inexpensive, and mechanically prevents the mold from opening.

The present invention has the above-described configuration, in which a pressurizing cylinder and a spacer are disposed between a part of the press frame and the upper mold part, and the pressurizing force of the pressurizing cylinder is applied to the mold V. The IIC will communicate this information.

Since the pressure reaction force receiving portion on the upper frame side or the lower frame side is capable of adjusting to variations in mold thickness, the pressure reaction force receiving portion on the upper frame side or the lower frame side can be adjusted for variations in mold thickness. 9 spacer.

It is possible to pressurize after eliminating the gap between the molds, which has the advantage that even if the pressure in the press/cylinder decreases due to a malfunction, the mold will not open beyond the expansion caused by pressurization of the press frame. However, this did not lead to the ejection of the vulcanizing medium, and as mentioned above, the tightening stroke f = j of the pressurizing cylinder was only necessary to compensate for the elongation of the press frame, and the mold clamping stroke was sufficient. Attachment can be carried out immediately and accurately.

In addition, the present invention has the ability to move the jammer plate, compared to one in which the pressure cylinder moves.

, the loss of the port for Akita supply can be prevented, and compared to the spacer that moves, the spacer that moves is
Since the long spacer becomes a long plate, the spacer can be fixed to the upper mold part, improving the 4'1 width of each product.
'I have 1 point.

The present invention will be described below based on nine examples.

Figure 1 shows the first embodiment, in which the upper frame l and lower frame 2 of the vulcanizing press are connected by a side frame A3.
This is a frame-type tire curing press. The mold 4 is fixed to the lower frame 2) 1,1-the mold 5 is fixed to the lower frame 2). It is fixed to the descending table 6.

The upper mold 5 is separated from the lower mold part 4,
- A VC pressure/cylinder 7 and a spacer 8 are arranged between the capital frame 1 and the lifting table 6.

A nut 11 is rotatably mounted on the upper frame 1v, and a gear 12 fixed at one end of the nut 11 meshes with the same gear 12.A two-part frame 1 is fitted at a proper position and driven by a drive device 13. ．． A gear 14. A threaded rod 16 which meshes with the nut 11 and has an arm 15 at one end. A rod 17 fixed to the arm 15 to prevent the threaded rod 16 from rotating. A mold thickness adjustment means 10 is constituted by a guide axis 18 for said rod 17 fixed in place on the upper frame 1.

A pressurizing cylinder 7 is located below the mold thickness adjusting means 10.
is fixed, and the rond part of the pressurizing cylinder 7 protrudes downward.

A spacer 8 is attached to the elevating table 6 which is guided by an appropriate means on the side frame 3 and raised and lowered.
It is swingably mounted on the top.

The swinging portion of the spacer 8 is mounted in a floating state in the axial direction, and its movement in the axial direction of the press is controlled by the BJ function.

According to this structure, after the lifting table 6 is lowered to close the upper F molds 4 and 5, the spacer 8 is advanced from the outer position of the side frame 3 to the center of the press, and then the drive device 13 is used to screw the spacer 8 into the press center. When the rod 16 is lowered and the rod part of the pressurizing cylinder 7 before pressurization comes into contact with the head of the spacer 8, the gap between the top and tenth part of the spacer 8 becomes ++
It is said that

After that, if a predetermined pressure is applied with the pressure/cylinder 7, the pressure will be transmitted to the stopper die 5 via the spacer 8, and in the unlikely event that the hydraulic pressure in the pressure cylinder 7 is reduced during vulcanization. Even when the weight is low, the amount of opening between the upper and lower molds 4 and 5 is extremely small, which prevents the problem of vulcanizing medium from spouting out. Conversely, finish vulcanization.
After that, after releasing the pressurizing force of the pressurizing cylinder 7, slightly operating the mold thickness adjusting means 10 to create a gap large enough to allow the spacer 8 to move, and then aligning the spacer 8 with the outside of the idle flaps 1 and 3. Upper frame 1. If the elevating table 6 is located at a position that does not interfere with the pressurization/cylinder 7, etc., the elevating table 6 can be moved upward and the vulcanized tire can be taken out.

Figures 2 and 3 show the second embodiment, and the same parts as in the first embodiment are labeled with the same amounts.Here, only the points that are different from the first embodiment will be explained. .

In the first embodiment, the pressurizing cylinder 7 is fixed to the mold thickness adjusting means lO, but in this example, the pressurizing cylinder 7 is fixed to the mold thickness adjusting means lO.
It is said to be able to swing freely on O. □The spacer 8 is fixed to the lifting table 6, and a hole larger than the outer diameter of the spacer 8 is formed in the screw rod 16 arranged in the upward extending direction. The pressurizing cylinder 7 has a diameter larger than that of the Ail hole, and is mounted on the mold thickness adjusting means 10 as shown in FIG. 3.

That is, one of the rotation stopper rods 17 mounted on the arm 15 is hollow.

A rod 19 passes through the interior thereof and suspends a support arm 20 of the pressurizing cylinder 7. The support ground 20 is mounted on the rod 19Vc so as to be movable in the axial direction by the distance between the pressurizing cylinder 7 and the screw +1t416. Further, the rod 19 has a buckle in the middle, and is mounted on the hollow rod 17 at t'+-C. The upper end +rc of the rod 19 has a keyway 19a in the axial direction, and has a key 21 that engages with the keyway 19a so that it can be freely rotatably mounted on the upper frame l at a suitable position Vζ. southeast 2
It has 2. The gear 22Vc is a gear 24 driven by a drive device 23 fixed at a proper position on the upper frame l.
It is matched.

Therefore, even if the position of the threaded rod 16 is not moved by the drive device 13Vc, the pressure/cylinder 7 is moved by the suspended rod 19.
is moved while maintaining its relative relationship with the arm 15. Since the pressurizing cylinder/dar 7 is allowed to move in the vertical direction, there is no hindrance to pressurizing. Further, the pressure cylinder 7 can be swung by the drive device 23 regardless of the position V of the threaded rod 16.

In this example, the Kanji cylinder 7 is moved in place of the spacer 8z of the first example, and the first effect young fruit is the first one.
This is almost the same as the example in .

Compared to the first embodiment, this embodiment requires a subane for storing the centering mechanism for vulcanization work in the center of the lifting table 6, which is useful when the structure of the first embodiment cannot be used.

Fig. 4 r: Example of 118g3, 9 examples + d,
Second embodiment
In this example, a pressure cylinder 7 is fixed to the upper end of the spacer 8, and a swingable plate 9 is interposed between the pressure cylinder 7 and the fixed rod 16. ,
Effect of the second actual case In addition to obtaining young fruit, the second embodiment (・(When the pressurizing cylinder 7 is oscillated in the upper part of the IJ press, the hydraulic pongee hose is Although there is a risk that this may lead to damage, this example is used to prevent this. Fig. 5 shows the fourth embodiment, and the interference plate is used as in Example 1d and the third example. 9, except that the pressure/cylinder 7 is donut-shaped and fixed to a straight rod 16VC, but the functions and effects are the same as in the third embodiment.

Although the explanation has been made based on Examples 1-4) to 4, these examples all use a spacer 8. Pressure/renoder 7, etc. are placed in the upper part of the press, but they can be placed in more than one 1) depending on the decision, and the mold thickness adjuster 10 is placed in the upper frame l. The device f! It is in a different format.

Pressure no. 1), / evening'-7, goo: -1-8, nyama plate 9, etc. are +i1;
It goes without saying that it is also possible to interpose the frame between the frame 4 and the frame 2.

The fiiii jlzl pilgrimage of the first figure song, the first one, the second figure, and the fourth figure are respectively! ! ], 2nd degree; Unomi Ili! A front view of the first row, FIG. 3 is an enlarged view of part 1 in FIG. 2, and FIG. 45 is an enlarged view of the main mounting part of the fourth embodiment.

1. Upper frame, 2.Door room, 3.Zai I frame, 4. Lower mold, 5.1-mold, 6Y1 lowering table, 7. Application/Renoder 18゛ spacer, 9. Nyama plate. 10 Mold j1 adjustment means 3 diagram
Kuzu 4 Sen procedure correction (voluntary) Showa 15 Fui 170 month - J1 day special if'l Agency Director General 1'l display Showa 5741' fXif layer temperature 122
606 Name of the bow invention (Thailand 1'), IJII Suspension Supplement iF, Relationship with I11 Special Y1 Applicant 11 Location East 61st Section 1-Il1 Ward Marunouchi-
No. 1115 1 [3 and 1 ladle (li20) Mitsubishi Heavy 1. Agent of Industrial Co., Ltd.

Claims (2)

[Claims] (1) In a tire vulcanizing press in which an upper frame and a lower frame are connected by a side frame, and an upper mold part is disposed between the upper frame and the lower frame so as to be movable up and down, the upper frame and the upper mold part A pressurizing cylinder and a spacer are arranged between the pressurizing cylinder and the spacer.
Alternatively, either one of the spacers can be moved to a position outside the side frame so as not to obstruct the lifting and lowering of the upper mold part, and the mold is attached to either the upper frame or the lower frame. A tire curing press characterized by being equipped with a thickness adjustment means. (2) In a tire curing press in which the upper frame and the first part frame are broken in connection with the side frame, and the upper mold part is disposed between the upper frame and the F part frame so as to be freely retractable, the upper part frame is broken. A pressurizing cylinder, a spacer, and a jammer plate are placed between the frame and the mold part, and the jammer plate is moved to a position outside the side frame so as not to obstruct the lifting and lowering of the upper mold part. ijJ Noh Toshi! +3'J A tire curing press characterized in that a mold thickness adjusting means is provided on either the upper frame or the lower frame.