JP2898919B2 - Tire vulcanizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire vulcanizer having a plurality of vulcanization molding sections for vulcanizing and molding a green tire by clamping an upper mold and a lower mold.

[0002]

2. Description of the Related Art In general, a tire vulcanizer raises and lowers an upper mold with respect to a fixed lower mold, and loads a green tire into a cavity formed by clamping the lower mold and the upper mold. By having a plurality of vulcanization molding parts for vulcanizing and molding a green tire by heating while pressing the inner surface of the tire with a bladder, vulcanization molding of a plurality of green tires can be performed simultaneously.

Conventionally, the above tire vulcanizer has a floor surface for supporting a vulcanization molding part in the case of a direct pressure system disclosed in, for example, JP-A-59-12827 and JP-A-4-358808. And a plurality of side frames launched from the base frame,
The top frame fixed to the upper ends of these side frames is formed in a frame shape, the lower mold is held by the base frame between the side frames, and the upper mold is moved through the elevating mechanism fixed to the top frame. By holding, the upper mold is moved up and down with respect to the lower mold.

[0004] In addition to the above-described direct pressure type tire vulcanizer,
There are tire vulcanizers such as a dome lock (Japanese Patent Publication No. 1-24050) and a column lock (Japanese Patent Application Laid-Open No. 4-332607) having a member corresponding to a side frame around a vulcanization molding portion.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly economical tire vulcanizer having a simple structure.

[0006]

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 2, the tire vulcanizer according to the present embodiment has a base frame 1 (fixed frame) fixed to a floor surface. At the center of the base frame 1, a cylindrical tie rod 3 (connection means) is erected, and the tie rod 3 is movable to the center of the top frame 5 (moving frame) located above the base frame 1. To be inserted into

The above-mentioned tie rod 3 is connected to the base frame 1
A base portion 3a penetrated and fixed to the base frame, an intermediate portion 3b raised from the base frame 1, and a head portion 3c located at the uppermost portion. A circumferential groove 3d having a diameter smaller than the diameter of the head 3c and the intermediate part 3b is formed therebetween.

A pair of half blocks 4.4 (locking means) is attached to the peripheral groove 3d. The half blocks 4 are reciprocally movable in parallel to the upper surface of the top frame 5 by block moving means (not shown). That is, the block moving means moves the half blocks 4, 4 in a direction in which the half blocks 4, 4 are brought into contact with each other when the mold is clamped. It is designed to move in the direction. Half block 4
As shown in FIGS. 3 (a) and 3 (b),
Concave portions 4a are formed, and these concave portions 4a form a through hole having a diameter slightly larger than the circumferential groove 3d when the half blocks 4 abut against each other. It has become. As a result, the half blocks 4.4 contact the head frame 3c of the tie rod 3 and the upper surface of the top frame 5 at the time of mold clamping as shown in FIG. It is designed to be fixed through.

The above-mentioned top frame 5 is provided with a pair of vulcanized molding portions 39, 39 arranged symmetrically to the left and right such that the tie rod 3 is located at the center. These vulcanization molding sections 39, 39 have mold fastening means 8.8 (fastening means), and at the lower end of the mold fastening means 8.8, an upper platen 15 having a built-in heating source is provided. It is fixed.

As shown in FIG. 4, each of the mold tightening means 8 includes a hollow cylinder member 9 and a cylinder member 9.
And a rod member 10 movably tightly fitted in the hollow portion of the base member, and is supported by the top frame 5 via a mold height adjustment mechanism described later. The cylinder member 9 and the rod member 10 form a first space portion 12 and a second space portion 11 in this order from the upper platen 15 side.
The working oil is press-fitted into the space 12 and the second space 11 from oil supply means. Then, the mold tightening means 8 pushes the rod member 10 out of the cylinder member 9 by press-fitting the working oil into the second space portion 11 to move the upper platen 15 downward in FIG. It is urged in one direction to generate a clamping force between the upper mold 16 (moving mold) and the lower mold 17 (fixed mold).
The reaction force is received by the top frame 5, the tie rods 3, and the base frame 1. On the other hand, the first space portion 12
When the working oil is press-fitted into the cylinder member 10, the rod member 10 is drawn into the cylinder member 9 to release the urging.

A mold height adjusting mechanism for supporting the above-described mold tightening means 8 on the top frame 5 is integrated with the mold tightening means 8. Specifically, the mold height adjusting mechanism has a male screw portion 9 a formed on the outer peripheral surface of the lower portion of the cylinder member 9, and a nut member 13 rotatably tightly fitted to a partition of the top frame 5. . On the inner peripheral surface of the nut member 13, a female screw portion 13a screwed to the male screw portion 9a is formed. On the other hand, nut member 1
3, a protruding gear portion 13b is formed on the outer peripheral surface.
The protruding gear portion 13b is meshed with a pinion 14 that is rotatably supported by a partition wall of the top frame 5. Also,
The protruding gear portion 13b is supported by a holding portion 5a formed on a partition wall of the top frame 5, and the nut member 13
Are fixed vertically. In order to move up and down the cylinder member 9 by rotating the nut member 13,
Although not shown, the cylinder member 9 is provided with a detent mechanism separately.

As a result, the nut member 13 is adapted to fix the mold fastening means 8 having the cylinder member 9 in the vertical direction with respect to the top frame 5 by screwing with the cylinder member 9, When the rotary member 14 is rotated by a rotation driving means (not shown), the cylinder member 9 is moved up and down by an amount corresponding to the amount of rotation.

As shown in FIG. 2, an upper mold 16 is provided on the lower surface of the upper platen 15 provided in the mold tightening means 8, and the upper mold 16 is used for vulcanization molding. Is heated by a heating source. Below the upper mold 16 is a lower mold 17.
Are disposed, and the lower mold 17 and the upper mold 1
The green tire 7 is loaded into a cavity formed when the mold 6 is closed.

The lower mold 17 has an upper platen 15
The lower mold 17 is fixed to the base frame 1 via a lower platen 18 having a built-in heating source, and a lift rod 20 of a center mechanism 19 is penetrated in the center of the lower mold 17. The lifting rod 20 supports a bladder 21, and the bladder 21 urges the inner surface of the green tire 7 loaded in the cavity outward.

As shown in FIG. 1, the top frame 5 supporting the upper mold 16 via the upper platen 15 and the mold tightening means 8 is provided with a frame lifting cylinder 6 (lifting means) fixed to the base frame 1. ). The frame lifting / lowering cylinder 6 is arranged along the tie rod 3, and the tip of the cylinder rod 6 a is fixed to the lower surface of the top frame 5.

On the back surface (right side in the figure) of the top frame 5, frame guide members 29 are provided. These frame guide members 29 are movably engaged with a frame guide rail 30 erected in parallel with the axis of the tie rod 3. Then, the top frame 5 is raised along the frame guide rail 30 by the frame lifting cylinder 6 pushing out the cylinder rod 6a, and can be pulled out of the tie rod 3 and reach the highest position shown by the two-dot chain line in the drawing. On the other hand, the frame elevating cylinder 6 descends along the frame guide rail 30 by pulling in the cylinder rod 6a, and is able to reach the lowest position shown by the solid line in FIG.

On the front surface (left side in the figure) of the top frame 5, a green tire 7 before vulcanization molding mounted on a tire mounting table 40 is mounted on an upper mold 16 and a lower mold 1.
A loader means 27 for transporting between the seven is provided. The loader means 27 is moved up and down together with the top frame 5 by the frame elevating cylinder 6, and includes a loader guide rail 22 provided on the front surface of the top frame 5;
It has a loader guide member 23 movably engaged with the loader guide rail 22, a turning means 25 provided on the loader guide member 23, and a loader chuck 26 provided on the turning means 25.

The loader guide rail 22 is provided so as to be parallel to the axis of the tie rod 3, and the loader guide rail 22 and the loader guide member 23 are mounted on the green tire 7 before vulcanization molding. This is used when adjusting the height position of the loader chuck 26 to correspond to the above. The turning means 25 is fixed to the loader guide member 23 via the support member 24, and includes a turning member 25a, a turning shaft 25b provided at the turning center of the turning member 25a, and a turning member. A turning member 25c is provided at the lower end of the moving shaft 25b, and is formed such that the tip end is separated from the axis of the rotating shaft 25b.

The rotating shaft 25b is set so that its axis is parallel to the axis of the tie rod 3, and is suspended so that its lower end is located below the lower surface of the upper mold 16. And a revolving member 2 provided at the lower end.
A loader chuck 26 capable of holding the green tire 7 is provided at the tip of 5c. As shown in FIG. 5, the loader means 27 having such a configuration is arranged in a pair on the left and right corresponding to the vulcanization molding parts 39, 39, and is rotated by rotating the rotation member 25a. Revolving member 2
The green tire 7 before vulcanization molding mounted on the tire mounting table 40 is conveyed to the vulcanization molding section 39 by rotating the loader chuck 26 via 5c.

On the other hand, as shown in FIG. 1, an unloader means 31 is disposed on the back side (the right side in the figure) of the top frame 5. The unloader means 31 is supported by a frame guide rail 30 and a vertical frame 32 having both ends fixed to the floor surface. As shown in FIG. It is provided in a left and right pair so as to correspond.

As shown in FIG. 1, the unloader means 31 comprises an unloader lifting / lowering cylinder 33 and a guide shaft 34 fixed to a vertical frame 32 so as to have an axis parallel to the axis of the tie rod 3, Shaft 3
4 is movably inserted into the unloader lifting cylinder 33.
An unloader guide member 35 to which the tip of the cylinder rod 33a is fixed, a turning member 36 provided on the side of the unloader guide member 35, and an unloader chuck 37 provided at the tip of the turning member 36. I have.

The vertical frame 32 supporting the unloader means 31 also supports the post cure inflator 28. The post cure inflator 28 includes an upper tire holding portion 28a and a lower tire holding portion 28b which are fixed vertically, and these tire holding portions 28a
28b is configured to inject high-pressure air into the green tire 7 when holding the green tire 7 so as to expand and cool the green tire 7.

The unloader lifting / lowering cylinder 33 lowers the unloader guide member 35 along the guide shaft 34 by pushing the cylinder rod 33a, and pulls the cylinder rod 33a to move the unloader guide member 35. Is raised along the guide shaft 34. The highest reaching position of the unloader guide member 35 is set such that the green tire 7 held by the unloader chuck 37 is located above the upper tire holding portion 28a. On the other hand, the lowest reaching position of the unloader guide member 35 is set so that the green tire 7 held by the unloader chuck 37 is located above the transfer table 38 for transferring the green tire 7 after the expansion and cooling.

As shown in FIG. 5, the transfer table 38 is
It is disposed between the post cure inflator 28 and the vulcanization molding section 39. Thereby, the unloader means 31
Sets the turning angle in three stages to take out the green tire 7 from the vulcanization molding section 39, carry in and carry out the green tire 7 into the post cure inflator 28, and carry out the expansion and cooling of the green tire 7 Carrier 3
8 is carried out.

The operation of the tire vulcanizer in the above configuration will be described. When the green tire 7 before vulcanization molding placed on the tire mounting table 40 is carried into the vulcanization molding section 39, the loader chuck 26 is positioned above the tire mounting table 40 as shown in FIG. It is turned by the turning means 25. And half block 4 ・ 4
When the top frame 5 is lowered by the frame lifting / lowering cylinder 6 in a state where is separated, the loader chuck 26 is lowered together with the top frame 5 and inserted into the green tire 7 on the tire mounting table 40.

When the loader chuck 26 holds the green tire 7, the frame lifting cylinder 6 raises the loader chuck 26 together with the top frame 5.
At this time, the frame lifting cylinder 6 is attached to the top frame 5
And the upper mold 16 is also raised.
6 is moved above the lower mold 17. Then, when the green tire 7 held by the loader chuck 26 reaches a predetermined position above the lower mold 17, the lifting by the frame lifting cylinder 6 is stopped. Thereafter, the loader chuck 26 is turned by the turning means 25, whereby the green tire 7 is turned on.
Is conveyed between the upper mold 16 and the lower mold 17 of the vulcanization molding section 39 and is placed on the lower mold 17.

Next, the loader chuck 26 is turned by the turning means 25.
After being retracted from the vulcanization forming section 39 by the rotation of the top frame 5, the top frame 5 is lowered to the lower limit position by the frame lifting cylinder 6. And half block 4
The half blocks 4 are fitted into the circumferential groove 3d of the tie rod 3 by moving the four tie rods 4 into contact with each other. Thus, the top frame 5 is fixed to the base frame 1 via the tie rods 3 by being fixed to the tie rods 3 by the lock mechanism including the half blocks 4.4, the circumferential groove 3d, and the head 3c. become.

Thereafter, as shown in FIG. 4, hydraulic oil is press-fitted into the second space 11 of the mold tightening means 8 and the rod member 10 is pushed out, thereby forming the upper mold 16 as shown in FIG. Is pushed down toward the lower mold 17. When the upper mold 16 and the lower mold 17 are clamped by pressing down the upper mold 16, the upper mold 16 and the lower mold 17 are heated, and the inner surface of the green tire 7 loaded in the cavity is bladder 21. As a result, the green tire 7 is vulcanized and molded.

Next, when the vulcanization molding of the green tire 7 is completed, after the half blocks 4.4 are separated, the top frame 5 is raised by the frame lifting cylinder 6 as shown in FIG. The upper mold 16 is separated from the lower mold 17. Thereafter, the unloader guide member 35 is moved to an intermediate position between the upper mold 16 and the lower mold 17 by the unloader elevating cylinder 33, and the unloader chuck 37 is turned so as to be located above the lower mold 17 to rotate the vulcanized tire 7. Will be held.

The unloader chuck 37 holding the vulcanized tire 7 takes out the vulcanized tire 7 from the lower mold 17, and performs vulcanization molding 39 and a post-cure inflator 28.
Turns to an intermediate position between Then, the unloader chuck 37 is raised by the unloader lifting cylinder 33 until the post-cure inflator 28 reaches a height position corresponding to the upper tire holding portion 28a or the lower tire holding portion 28b. Thereafter, the vulcanized tire 7 is mounted on the upper tire holding portion 28a or the lower tire holding portion 28b of the post cure inflator 28 by turning the unloader chuck 37 toward the post cure inflator 28.

When the inflation and cooling of the vulcanized tire 7 by the post-cure inflator 28 is completed, the unloader chuck 37 holds the vulcanized tire 7 and holds the vulcanized molding section 39 and the post-cure inflator 28 as shown in FIG. Turns to an intermediate position between When the unloader chuck 37 is lowered, the vulcanized tire 7 is placed on the carriage 38.

In this embodiment, FIGS. 1 and 2
As shown in the figure, the base frame 1 is a fixed frame,
Although the top frame 5 is described as a moving frame, the present invention is not limited to this, and the base frame 1 may be a moving frame and the top frame 5 may be a fixed frame. Further, the tie rod 3 may be fixed to any of the fixed frame and the moving frame described above, and the moving frame may move in the left-right direction. That is, the tire vulcanizer may be of the vertical type in the vertical direction of the present embodiment, or may be of the horizontal type in the left-right direction. When the tie rod 3 is fixed to the fixed frame, a stable tightening state can be obtained. Also,
When the tie rod 3 is fixed to the moving frame and the locking means is provided on the fixed frame, the mechanism for simplifying the mechanism can be simplified because the pipe for operating the lock does not move up and down together with the moving frame. Further, the tie rod 3 is arranged at the center position of the vulcanization molding parts 39, but is not limited to this, as long as it is between the vulcanization molding parts 39, 39.
It may be deviated from the center position. Also, the vulcanization molding section 39
Is not limited to two and may be three or more. Further, instead of fixing by the half blocks 4, the tie rod 3 may be fixed by pin insertion, bayonet or the like. Further, even if the tie rod 3 connecting the moving frame and the fixed frame is divided and fixed to both frames, and the divided tie rods 3 are fixed to each other, the moving frame and the fixed frame are fixed. good.

As described above, in the tire vulcanizer of the present embodiment, the upper mold 16 (moving mold) and the lower mold 17 (fixed mold) are clamped to vulcanize and mold a green tire. And a base frame 1 holding the lower mold 17 of the vulcanization molding section 39,
A top frame 5 (moving frame) holding the upper mold 16 of the vulcanization molding section 39 and a frame lifting cylinder 6 for raising and lowering the top frame 5 with respect to the base frame 1
(Elevating means) and a tie rod 3 that is arranged between the vulcanization molding section 39 and connects the base frame 1 and the top frame 5.
(Connecting means), base frame 1 and top frame 5
And a half block 4 for fixing the
(Lock means), upper mold 16 and lower mold 1
And a mold fastening means 8 (fastening means) provided between the tie rods 7 so as to receive a fastening reaction force by the tie rod 3.

Thus, the vulcanization molding 39 is supported by the base frame 1, the top frame 5, and the vulcanization molding 39.
This is performed by the tie rods 3 arranged between 39. Therefore, the size can be reduced as compared with a tire vulcanizer of a direct pressure type, a dome lock type, a column lock type, or the like in which side frames are disposed on both sides of the vulcanization molding section 39. In addition, the tie rod 3 is
By being placed between 9.39, the mold 16
17 can be improved, and the green tire and the vulcanized tire 7 can be transported by turning as described above, and the loader unit 27 and the unloader unit 31 can be moved. It is possible to expand the degree of freedom of design.

Further, the tire vulcanizer of this embodiment is characterized in that the mold tightening means 8 is provided in each vulcanization molding section 39, so that the difference in mold height can be reduced. Thus, the upper mold 16 and the lower mold 17 of each of the vulcanization molding sections 39 can be absorbed by the stroke of 8, and the clamping force at the time of mold clamping can be made uniform. Further, the right and left mold height adjustment errors can be absorbed by the stroke of the tightening means, and can also be absorbed by the stroke of the tightening means when the tire rubber bites into the upper and lower molds.

Further, the tire vulcanizer of the present embodiment is characterized in that the mold tightening means 8 provided in each vulcanization molding section 39 has a mold height adjusting mechanism for adjusting the mold height. I have. Thereby, when the mold height changes due to the change of the upper mold 16 and the lower mold 17,
With the mold height adjusting mechanism, it is possible to adjust the positional relationship between the upper mold 16 and the lower mold 17 in correspondence with the mold tightening means 8, and it is possible to eliminate the trouble of adjusting the mold tightening means 8. Has become.

Further, the tire vulcanizer of this embodiment is characterized in that the tie rods 3 are arranged at the center positions between the vulcanization molding sections 39, 39.
9, it is possible to improve the stability of the device at the time of mold clamping.

The tire vulcanizer of this embodiment has a top frame 5 which is raised and lowered by a frame lifting cylinder 6.
Is provided with a loader means 27. Thus, since the frame lifting cylinder 6 is used for both lifting and lowering of the top frame 5 and lifting and lowering of the loader means 27, it is possible to reduce the number of parts required for the loader means 27, thereby facilitating maintenance work. The cost can be reduced.

Further, in the tire vulcanizer of the present embodiment, the step of taking out the vulcanized tire 7 from the vulcanization molding section 39 and the post cure inflator 28 having the fixed tire holding sections 28a and 28b are performed. Unloader means 31 for carrying out the step of transporting the vulcanized tire 7 and the step of transporting the vulcanized tire 7 from the post-cure inflator 28 to the transport table 38
Is provided. This allows
Since the above-described process can be performed by the unloader means 31, the mechanism for transporting the vulcanized tire 7 after vulcanization molding is simplified, and maintenance work by reducing the number of parts required for the post-process after vulcanization molding is performed. It is possible to simplify and reduce the cost.

In the present embodiment, the mold fastening means 8 is provided in each vulcanization molding section 39, but the invention is not limited to this. That is, as shown in FIG. 6, a mold fastening means 8 is provided between the top frame 5 and the half block 4, and after the fixing by the half block 4, the mold fastening means 8 presses the top frame 5 in the direction of the base frame 1. By doing so, a configuration in which a tightening force is generated between the upper mold 16 and the lower mold 17 may be adopted. In addition, in the case of this configuration, since the mold clamping of the entire vulcanization molding section 39 can be performed by the minimum mold clamping means 8, it is possible to reduce the number of parts required for the mold clamping, and as a result, Maintenance work can be facilitated and costs can be reduced.

[0048]

[0049]

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a side view of a state in which a tire vulcanizer is mold-clamped.

FIG. 2 is an explanatory diagram showing a front view of a state in which a tire vulcanizer is mold-clamped.

3A and 3B show a half block, wherein FIG. 3A is a front view and FIG. 3B is a side view.

FIG. 4 is a longitudinal sectional view of a mold fastening means.

FIG. 5 is an explanatory view showing the operation of a loader and an unloader provided in the tire vulcanizer.

FIG. 6 is a view showing a modification of the tire vulcanizer, and is an explanatory view showing a configuration in which a mold fastening means is provided on a tie rod.

[Explanation of symbols]

 Reference Signs List 1 base frame 3 tie rod 4 half block 5 top frame 6 frame lifting cylinder 7 green tire 8 mold tightening means 9 cylinder member 10 rod member 13 nut member 14 pinion 16 upper mold 17 lower mold 25 turning means 26 loader chuck 27 loader means 28 Post cure inflator 31 Unloader means 32 Vertical frame 33 Unloader elevating cylinder 36 Revolving member 37 Unloader chuck 38 Carrier 39 Vulcanization molding part 40 Tire mounting table

──────────────────────────────────────────────────の Continuing on the front page (51) Int.Cl. ⁶ Identification code FI B29L 30:00 (72) Inventor Kotaro Ozaki 2-3-1 Shinhama, Araimachi, Takasago-shi, Hyogo Kobe Steel, Ltd. Takasago Works ( 56) References JP-A-3-193308 (JP, A) JP-A-59-187834 (JP, A) JP-B-1-4895 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , (DB name) B29C 35/02-35/04 B29C 33/02-33/08 B29C 33/22-33/24 B29C 45/64-45/68

Claims (3)

(57) [Claims] 1. A mold clamping means for generating a clamping force between a movable mold and a fixed mold; a movable frame supporting the movable mold via an upper platen and the mold clamping means; A tire vulcanizer comprising a fixed frame having a fixed mold fixed via a lower platen, wherein the mold tightening means moves the mold tightening means in a vertical direction.
Converting mechanism mold height adjustment mechanism for adjusting the mold height are integrated, is supported on the moving frame through the mold height adjustment mechanism, the lower end is fixed on said platen, said upper A tire vulcanizer, wherein a platen is urged toward the fixed frame to generate the tightening force. 2. A mold clamping means for generating a clamping force between a moving mold and a fixed mold; a moving frame supporting the moving mold via an upper platen and the mold clamping means; A tire vulcanizer comprising: a fixed frame in which a fixed mold is fixed via a lower platen; wherein the mold tightening means comprises: a hollow cylinder member; A rod member that is fitted and pushed out or retracted from the cylinder member by press-fitting the working oil , and moving the cylinder member up and down on the cylinder member.
A mold height adjusting mechanism to be integrated is supported by the moving frame via the mold height adjusting mechanism; a lower end of the rod member is fixed to the upper platen; and the rod member is a cylinder member. A tire vulcanizer, wherein the upper platen is urged toward the fixed frame to generate the tightening force when the tire vulcanizer is extruded. 3. The mold height adjusting mechanism includes a male screw portion formed on an outer peripheral surface of the cylinder member, and a nut member formed with a female screw portion screwed into the male screw portion. The tire vulcanizer according to claim 2, wherein the member is rotatably and closely fitted to a partition of the moving frame.