CN108297467B

CN108297467B - Tire segmented mold guiding device, tire mold and tire

Info

Publication number: CN108297467B
Application number: CN201810002157.6A
Authority: CN
Inventors: 赵阳; 刘志兰; 张伟; 杜平; 孙日文; 单既强; 张恭运; 宫耀宇; 沈锡良
Original assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Current assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Priority date: 2018-01-02
Filing date: 2018-01-02
Publication date: 2020-05-12
Anticipated expiration: 2038-01-02
Also published as: CN108297467A

Abstract

The invention discloses a tire segmented mold guiding device, a tire mold and a tire, wherein the guiding device comprises sliding plates and guiding strips, a sliding groove is formed between every two adjacent sliding plates, the guiding strips slide in the sliding groove in the mold opening and closing process, the fit clearance between the guiding strips and the sliding plates at least comprises a first clearance and a second clearance, and the circumferential movement of a sliding part in the mold opening and closing process is reduced by utilizing a multi-clearance structure.

Description

Tire segmented mold guiding device, tire mold and tire

Technical Field

The invention relates to a tire segmented mold guiding device, a tire mold and a tire.

Background

The existing tire segmented mold, especially the oblique plane tire segmented mold, the guide strip is installed on the sliding part, in order to connect the sliding part and guide, in the process of opening and closing the mold, the sliding plate contacts with the back of the sliding part, when the guide ring and the sliding part are matched in a plane form, because the guide strip and the sliding plate have a larger circumferential gap, the mold is closed every time, the sliding part can produce circumferential displacement, and then drive the pattern block to deviate in circumferential position, the pattern block caliber is extruded, the position of the vertical seam of the corresponding pattern block on the tire vulcanized seriously has dislocation or rubber edge, and the tire quality is affected.

Disclosure of Invention

The invention aims to solve the problems and provides a tire segmented mold guiding device, a tire mold and a tire.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a tire segmented mold guider, includes slide and gib block, forms the sliding tray between two adjacent slides, the gib block is opened and shut mould in-process and is slided in this sliding tray inside, and the fit clearance between gib block and the slide includes first clearance and second clearance at least, utilizes many clearance structure to reduce the circumferential displacement of the in-process sliding part of opening and shutting the mould.

The sliding portion may include an arcuate seat and a block, or only a block.

When the die is closed, the minimum fit clearance between the guide strip and the sliding plate is a first clearance, and the second clearance is larger than the first clearance.

Further, the sliding groove is a T-shaped groove.

Furthermore, the guide ring is provided with a limiting block, the axial displacement stroke of the guide strip fixed on the sliding part is limited by the limiting block, and when the limiting groove of the guide strip contacts the limiting block, the sliding part does not move downwards relative to the guide ring any more.

As an embodiment, further, the first gap and the second gap are formed by a gap variation between two adjacent sliding plates.

Furthermore, the first gap and the second gap are smoothly transited through a slope or a cambered surface of the gap transition region.

As another embodiment, further, the first gap and the second gap are formed by a circumferential width variation of the guide strip.

Furthermore, the first gap and the second gap are smoothly transited through a slope or a cambered surface of the width transition region.

Further, the width of the sliding groove is larger than that of the guide strip.

Preferably, the second gap is 0.5-1 mm. So as to ensure the smooth opening and closing of the mold.

Preferably, the first clearance is between 0.05 and 0.2mm, i.e. half the circumferential clearance between the guide strip and the nearest slide plate is between 0.05 and 0.2 mm.

Furthermore, the length of the first gap is more than or equal to 20mm, the design can ensure that the sliding part does not deviate in the circumferential direction after the mould is closed, and the problems that the tire top position of the mould vulcanization is easy to have dislocation, the rubber edge and the pattern block caliber of the mould are extruded in a deviating mode are solved.

Furthermore, the circumferential fit clearance between the guide strip and the sliding part is adjusted to reduce the circumferential movement of the sliding part in the mould opening and closing process.

A tire mold comprises the guide device.

A tire is prepared from the tire mold.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention changes the circumferential matching structure of the guide strip and the sliding plate into a multi-gap structure, utilizes smaller gap to mold, reduces circumferential movement of the sliding part, utilizes larger gap to mold, ensures smooth mold opening action, and can reduce dislocation and rubber edges of the tire produced by using the mold;

(2) the invention can effectively reduce the inclined squeezing condition of the pattern block caliber, and is beneficial to improving the service life of the mold;

(3) the small gap is used for die assembly, so that the sliding part is in the correct position when the sliding part is in a die assembly state, the sliding part does not move circumferentially, the probability of dislocation of the tire top is reduced, and the tire vulcanization quality is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural diagram of a mold closing state of a double-guide-gap segmented mold of the invention;

FIG. 2 is a schematic view of the rotary structure of FIG. 1 in a clamped state A-A according to the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along line D-D of FIG. 2 in accordance with the present invention;

FIG. 6 is a schematic diagram of the mold opening process according to the present invention at a certain time;

FIG. 7 is a schematic view of the E-E rotation structure at a certain time during the mold opening process of FIG. 6;

FIG. 8 is a schematic view of a slide plate slot circumferential double gap;

FIG. 9 is a schematic view of the circumferential double width of the guide strip;

FIG. 10 is a schematic view showing a circumferential fit clearance between the guide strip and the slide in the clamped state;

FIG. 11 is a schematic view of the F-F rotary structure in the clamped state of FIG. 10;

wherein: 1. the mould comprises an upper cover, 2, a sliding part, 3, a guide strip, 4, a guide ring, 5, a sliding plate, 6, a limiting block, 7, a base, 8, a first gap, 9, a second gap, 10, a small gap matching position during mould closing, 11, a middle large gap non-matching surface during mould closing, 12, large gap matching during mould opening, 13, a gap transition region, 14, a first width, 15, a second width, 16 and a width transition region; 5-1 and 5-2 are two adjacent sliding plates.

The specific implementation mode is as follows:

the invention is further described with reference to the following figures and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

Just as the introduction of background art, because there is great circumference clearance in gib block 3 and slide 5 among the prior art, at every compound die, the circumference displacement can all appear in sliding part 2, and then drive the skew of decorative pattern piece circumference position, the decorative pattern piece bore is crowded partially, and when serious, corresponding decorative pattern piece perps position has dislocation or gluey limit on the tire of vulcanizing, influences the quality of tire, in order to solve above technical problem, this application has proposed a safety, reliably, can realize that mould compound die in-process decorative pattern piece position repeated positioning is accurate.

In a typical embodiment of the present application, as shown in fig. 1 and 2, a dual guide gap tire segmented mold is provided, which includes a guide ring 4, an upper cover 1, a base 7, a sliding plate 5, a guide bar 3, a sliding portion 2, etc., wherein the sliding portion 2 is disposed between the base 7 and the upper cover 1, the guide bar 3 is mounted on the sliding portion 2 to connect and guide the sliding portion 2, and the sliding plate 5 contacts with the back of the sliding portion 2 during the mold opening and closing process.

As shown in fig. 3-5, the sliding plate 5 and the guide strip 3 of the present invention have double gaps in the circumferential direction, a smaller gap is used in mold closing, and a larger gap is used in mold opening and mold opening. The small gap is used for die assembly, the circumferential movement of the sliding part 2 is reduced, the large gap is used for die opening, the smooth die opening action is ensured, and dislocation and rubber edges can be reduced for the tire produced by using the die.

Specifically, slide 5 and stopper 6 pass through the fix with screw on guide ring 4, and gib block 3 passes through the fix with screw on sliding part 2, and slide 5 fixes the T type groove that forms on guide ring 4 and cooperates with gib block 3, and the mould in-process gib block 3 slides in this T type inslot portion that opens and shuts. The displacement stroke between the sliding part 2 and the guide ring 4 is limited by the limiting block 6, and when the top of the T-shaped groove of the guide strip 3 contacts the limiting block 6, the sliding part 2 does not move downwards relative to the guide ring 4. Of course, this is only one of the limiting means commonly used in the art, and other limiting means in the art are not described herein.

The guide grooves of the slide plate have different widths and at least comprise a first groove width and a second groove width.

As shown in fig. 6 and 7, in the mold opening process, the guide strip 3 is matched with the sliding plate 5 by the second gap 9, so that the sliding part 2 can be smoothly opened.

When the die is closed, the gap between the guide strip 3 and the sliding plate 5 is changed from a large gap (second gap 9) to a small gap (first gap 8), so that the sliding part 2 is in a correct position and does not displace in the circumferential direction when the sliding part is in a closed state.

The above-mentioned double gaps can be realized by the gap change of the sliding grooves between the sliding plates 5, that is, the sliding grooves of the sliding plates 5 are circumferentially provided with the double gaps, as shown in fig. 8, when the fit gap between the sliding plates 5 and the guide bars 3 changes, the double gaps are smoothly transited through the inclined surfaces or the arc surfaces of the gap transition regions.

The double gaps can also be realized by the circumferential width change of the guide strip 3, namely the circumferential double widths of the guide strip 3, and when the fit gap between the sliding plate 5 and the guide strip 3 changes, the smooth transition is realized through the inclined surface or the cambered surface of the width transition area.

In the process of opening and closing the die, the matching gap between the guide strip 3 and the sliding plate 5 is a larger gap, the distance between the sliding plate and the unilateral gap of the guide strip can be controlled to be 0.5-1mm, so that the smoothness of opening and closing the die can be ensured, and the matching length of the second gap 9 is the length obtained by removing the first gap 8 and the rest part of the transition area.

In a certain travel range near the end of mold closing, the clearance between the guide strip 3 and the sliding plate 5 begins to change from a large clearance to a small clearance through a section of transition area, and the clearance can be smoothly transited, and as a preferred scheme, the length of the transition area is more than or equal to 10 mm.

The small gap is a first gap 8, and the unilateral gap (the unilateral gap means a half of the circumferential gap between the guide strip 3 and the slide plate 5 closest to the guide strip in the mold closing state) is preferably 0.05-0.2mm, so that the final mold closing state is ensured, and the small gap matching is realized.

The matching length of the small gap can better ensure that the sliding part 2 does not deviate in the circumferential direction after the mould is closed, and the problems that the tire top position of the mould vulcanization is easy to have dislocation, a rubber edge and the caliber of the pattern block of the mould is extruded in a deviating way are solved. With little clearance fit's length can set up according to the length of the gib block 3 of different moulds, as preferred scheme, little clearance fit length more than or equal to 20 mm.

In addition, in addition to the method in the above-described embodiment ensuring that the sliding portion 2 does not move in the circumferential direction after mold clamping, this function can be achieved by modifying the circumferential fit clearance of the guide strip 3 and the sliding portion 2, as shown in fig. 10 and 11.

As another embodiment, a guide groove to be fitted with the guide bar 3 is provided on the sliding portion 2 (in this case, the guide bar 3 is provided on the guide ring).

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. The utility model provides a loose mould guider of tire, includes slide and gib block, forms the sliding tray between two adjacent slides, the gib block mould in-process slides at this sliding tray inside, characterized by: the fit clearance between the guide strip and the sliding plate at least comprises a first clearance and a second clearance, the circumferential movement of the sliding part in the mold opening and closing process is reduced by using a multi-clearance structure, the second clearance is larger than the first clearance, the first clearance is adopted in the mold closing process, the second clearance is adopted in the mold opening and mold opening process, the mold closing is performed by using the first clearance, the circumferential movement of the sliding part is reduced, and the mold opening is performed by using the second clearance, so that the smooth mold opening action is ensured.

2. The tire segmented mold guiding device as set forth in claim 1, wherein: the minimum fit clearance between the guide strip and the sliding plate is a first clearance during die assembly.

3. The tire segmented mold guiding device as set forth in claim 1, wherein: the first gap and the second gap are formed by the change of the gap between two adjacent sliding plates.

4. A tire segmented mold guiding device as in claim 3, wherein: the first gap and the second gap are smoothly transited through a slope and/or a cambered surface of a gap transition region.

5. The tire segmented mold guiding device as set forth in claim 1, wherein: the first gap and the second gap are formed by a circumferential width variation of the guide strip.

6. The tire segmented mold guiding device as set forth in claim 5, wherein: the first gap and the second gap are smoothly transited through a slope and/or a cambered surface of the width transition region.

7. The tire segmented mold guiding device as set forth in claim 1, wherein: the width of the sliding groove is larger than that of the guide strip.

8. The tire segmented mold guiding device as set forth in claim 1, wherein: the first gap is 0.05-0.2 mm;

or/and the second gap is 0.5-1 mm.

9. The tire segmented mold guiding device as set forth in claim 1, wherein: the length of the first gap is greater than or equal to 20 mm.

10. The tire segmented mold guiding device as set forth in claim 1, wherein: the circumferential fit clearance between the guide strip and the sliding part is adjusted to reduce the circumferential movement of the sliding part in the mould opening and closing process.

11. A tire mold is characterized in that: comprising a guide device according to any one of claims 1-10.