WO2018004204A1

WO2018004204A1 - Air discharging apparatus of tire mold

Info

Publication number: WO2018004204A1
Application number: PCT/KR2017/006653
Authority: WO
Inventors: 홍성광
Original assignee: 홍성광
Priority date: 2016-07-01
Filing date: 2017-06-23
Publication date: 2018-01-04
Also published as: KR101690463B1

Abstract

An air discharging apparatus of a tire mold is disclosed. The present invention relates to an apparatus wherein an air nozzle comprising a body and a separable cap having coaxially formed inlet holes for discharging air outside a mold and inserted into and coupled to the body is mounted in the mold so as to easily remove rubber protrusions of a tire and dust thereof when the air nozzle is blocked thereby. The apparatus comprises a plurality of perforations formed through a body of a mold, and an air nozzle mounted in each of the perforations, the air nozzle comprising: a cap and a body separably coupled to each other through a coupling part; a dust collecting part having a gap formed between a lower surface portion of a seating part of the cap coupled into the body and an opposite surface of the body; a plurality of inlet holes which are in contact with the upper side of the dust collecting part and are formed through the seating part of the cap; a guide passage which is in contact with the lower side of the dust collecting part and is provided as a recessed groove formed on an outer circumferential surface of the coupling part; a space part which is in contact with the guide passage and is formed in a lower portion of the coupling part; and a discharge passage which is in contact with the space part and is provided as a through hole formed inside the body.

Description

Air exhaust device of tire mold

The present invention relates to a device for discharging air of a tire mold, and more specifically, a detachable cap having an inlet hole formed coaxially for discharging air to the outside of the mold has a body. The present invention relates to a technique for attaching an inserted air nozzle to a mold to easily remove the air nozzle when the air nozzle is clogged by a rubber bump or powder of a tire.

In general, tires are made of flexible rubber Green Tires (also called "raw tires") into molds (also called "vulcanization molds") to apply heat and pressure both inside and outside to allow sulfur and other chemicals. The materials undergo a vulcanization process that causes chemical reactions with the rubber.

Through this vulcanization process, the rubber molecules combine with sulfur to form a stable compound, and the tire is elastic. The mold makes a unique tread design of various patterns.

In the vulcanization process, steam, hot water, cooling water, high pressure air, etc., must be adjusted to a predetermined time as a means for vulcanization. After the vulcanization operation is completed, the air or gas remaining in the mold of the vulcanizer must be removed, and in particular, the shape of the tire is clearly released only when the air remaining in the corner of the tread pattern is completely discharged.

Air vents (also referred to as "air nozzles"), which are used as means for discharging the air to the outside of the mold, are somewhat different depending on the type of the vehicle or the type of tires. The dog is mounted on the mold.

Meanwhile, as a technique for discharging air from the mold after the tire is molded through the mold, the air of the tire vulcanization mold disclosed in Korean Patent Publication No. 10-2003-0069699 (August 27, 2003) Plugs' (called 'Document 1') are already well known.

Referring to Document 1 mentioned above, a plurality of vents (3) radially perforated in a vulcanization mold to release the stagnant air in the vulcanization mold (1, 2) for optimal molding of the tire grooves to the outside The air plug 10 of the check valve type interposed in the vent 3 to block the production of the extraction rubber 8 during the molding process of the tire and the air plug 10 are provided in the air plug 10. A piston 12 having a stepped portion interposed inside the body 11 in a body 11 having a hollow air passage and having a tapered portion at an upper side thereof to open and close the air plug 10, and the piston ( When air is discharged after 12) is retracted by pneumatic pressure, it is restored by the elastic force of the spring S mounted on the lower step of the piston 12, and on the spline 13 mounted on the lower surface of the spring S. Each of the air blowing passages 14 is formed And it characterized in that.

However, such a conventional technique is that once the check valve type air plug 10 is interposed in the vent 3, the extraction rubber 8 or powder thereof is discharged when air is discharged from the vulcanization molds 1 and 2. When the air blowing passage 14 is blocked by foreign substances such as the like, it is difficult to separate the air plug 10 from the vent 3 for repair.

As a result, the air plug 10 is not able to remove foreign matters, and thus there is a problem in that the extraction rubber 8 cannot be prevented from being generated on the outer surface of the tire T.

The air nozzle of the present invention for solving the conventional problems as described above is a rubber protrusion formed on the outer surface of the tire because the cap inserted into the body is detachable from the body or The purpose is to make it easy to remove the air nozzle clogging by the powder or the like.

In addition, the air nozzle of the present invention is to discharge the air to the outside of the mold through the minute inlet formed coaxially in the cap (Cap) to minimize the production of the rubber protrusions or to block another object There is this.

The constitutional means for solving the problems of the present invention as described above is characterized in that the air nozzle is mounted to the perforated formed of a plurality of the body of the mold is configured.

In addition, the air nozzle is a cap that is separated from each other through the fastening portion to the inside of the body, the dust collecting portion formed a gap between the opposite surface provided in the body and the lower surface of the seating portion provided in the cap is composed of It features.

In addition, the inflow hole formed in the number of the seating portion of the cap in contact with the upper dust collecting portion and the induction passage formed in the groove formed on the outer peripheral surface of the fastening portion in contact with the dust collecting portion downward.

And it characterized in that it comprises a space formed on the lower portion of the fastening portion in contact with the induction path and a discharge path formed to be through to the inside of the body in contact with the space portion.

On the other hand, another configuration means for solving the problems of the present invention as described above is characterized in that the air nozzle is mounted on the perforated formed of a plurality of the body of the mold is configured.

In addition, the air nozzle is coupled to the inner side of the body so that the cap is separable from each other through the fastening portion, the first dust collecting portion formed a gap between the opposite surface provided in the body and the lower surface of the seating portion provided in the cap It is characterized by that.

In addition, it characterized in that the inlet hole formed in the number of the seating portion of the cap in contact with the upper part of the first dust collector and the induction path formed in the groove on the outer peripheral surface of the fastening portion in contact with the lower side of the first dust collector.

In addition, it characterized in that the second dust collection portion formed between the lower surface of the fastening portion and the opposite surface of the body in contact with the induction path.

And, it characterized in that it comprises a discharge path formed to be in contact with the second dust collecting portion to the inside of the body.

In addition, it characterized in that the first discharge passage formed in contact with the second dust collecting portion to be formed through the inside of the body.

And a second discharge passage formed in contact with the first discharge passage with a larger diameter than the first discharge passage.

Hereinafter, the construction means and various processes for the problem to be solved by the present invention will become more apparent from the detailed description of the various embodiments shown in the accompanying drawings.

As such, the present invention provides an effect of preventing or minimizing the generation of rubber protrusions on the outer surface of the tire through the air nozzle formed in the coaxial coaxial inlet of the air inlet to the cap.

In addition, the air nozzle of the present invention can remove the foreign matter in the state that the air nozzle is not disassembled from the mold when the air nozzle is blocked by a rubber protrusion or powder or the like because the cap inserted into the body can be separated from the body. It provides another effect that can be facilitated.

Air nozzle of the present invention provides another effect that can be repeatedly recycled even after removing the foreign matter.

1 is a view schematically illustrating an embodiment in which an air nozzle is mounted on a tire mold according to the present invention.

2 is a cross-sectional view showing a part of the air nozzle is mounted on the mold in Figure 1 according to the present invention.

Figure 3 is an exploded view of one embodiment showing the configuration of the air nozzle according to the invention in detail.

4 is a view showing in detail the state in which the air nozzle is assembled in Figure 3 according to the present invention.

5 is a plan view of a first embodiment showing in detail the operation portion provided in the cap in Figure 3 according to the present invention.

Figure 6 is a plan view of a second embodiment showing in detail the operation portion provided in the cap in Figure 3 according to the present invention.

7 is a cross-sectional view taken along line A-A of a first embodiment showing a state in which air is discharged to the outside through an air nozzle mounted to a mold in FIG. 4 according to the present invention.

8 is a cross-sectional view taken along line A-A of a second embodiment showing a state in which air is discharged to the outside through an air nozzle mounted on a mold according to the present invention.

9 is a cross-sectional view taken along line A-A of a third embodiment showing a state in which air is discharged to the outside through an air nozzle mounted on a mold in FIG. 4 according to the present invention.

10 is a view showing a state in which a rubber protrusion formed on the outer surface of the tire by a conventional technique.

In describing specific embodiments of the present invention, illustrated by the drawings of the present invention, the constituent means and operations are described as at least one embodiment, whereby the technical spirit and core of the present invention. It is to be understood that certain components and practices are not limited.

For reference, in designating reference numerals in the drawings described in the present invention, it should be noted that the same components are given the same reference numerals even though they are shown in different drawings.

Hereinafter, with reference to the drawings shown in Figures 1 to 10 will be described in detail one embodiment of the air discharge device of the tire mold according to the present invention.

The present invention is the tire when forming the tire 500 through a plurality of air nozzles (Air nozzle) 100 mounted on the body (410) of the mold 400 installed in the vulcanizer (not shown) It characterized in that the air 600 remaining between the outer surface 510 of the 500 and the inner surface 430 of the mold 400 is discharged to the outside.

The present invention having such a feature is forcibly fitted through a taper portion 210 to a plurality of perforations 420 formed in the body 410 of the mold 400 as shown in FIGS. 1 and 2. The air nozzle 100 is mounted.

3, 4 and 7, the cap 300 inserted into the body 200 is fastened to the air nozzle 100 according to the present invention. Plane between the opposite surface 224 provided in the body 200 and the lower surface portion 324 of the seating portion 310 provided in the cap 300 is fastened so as to be separated from each other through the

parts

220 and 320. The dust collecting part 230 is configured such that the gap t1 is formed.

In other words, when the tire 500 is molded, the dust collecting part 230 moves the air 600 remaining between the outer surface 510 of the tire 500 and the inner surface 430 of the mold 400 to the outside of the mold 400. Before the discharge, the air 600 flowing through the inlet hole 311 is primarily collected to act to collect.

In addition, a plurality of inlet holes 311 are formed in the seating portion 310 of the cap 300 to be in contact with the dust collecting part 230 and the fastening part so as to contact the dust collecting part 230 downward. The outer circumferential surface 320a of the 320 has a configuration in which the induction path 323 for guiding the air 600 to one or more to be grooved in the longitudinal direction is formed.

In addition, the contact portion 323 is formed in contact with the lower portion of the fastening portion 320 to form a space portion 232a, and in addition to the contact with the space portion 232a fastening portion to be through the inside of the body 200 The discharge path 240 is formed to be equal to or larger than the diameter φ2 of the 320, thereby discharging the air 600 collected by the dust collector 230 to the outside.

On the other hand, as the second and third embodiments of the air nozzle 100 according to the present invention is inserted into the body (Body) 200 as shown in Figure 3, 4 and 8, 9 attached The cap 300 is fastened to be separated from each other through the

fastening parts

220 and 320, so that the opposing surface 224 provided in the body 200 and the seating part 310 provided in the cap 300. The first dust collecting part 231 is formed by forming a planar gap t1 between the lower surface portions 324 of.

In other words, the first dust collecting part 231 molds the air 600 remaining between the outer surface 510 of the tire 500 and the inner surface 430 of the mold 400 when the tire 500 is molded. Before the discharge to the outside, the air 600, which is introduced through the inlet hole 311 is primarily collected to act to collect.

In addition, a plurality of inlet holes 311 are formed in the seating portion 310 of the cap 300 so as to be in contact with the first dust collecting part 231 upward, and the lower side of the first dust collecting part 230. It is configured to form an induction path 323 for guiding the air 600 in one or more so as to be recessed in the longitudinal direction on the outer peripheral surface (320a) of the fastening portion 320 to contact.

In addition, a second dust collecting part 232 formed between the lower surface part 325 of the fastening part 320 and the opposing surface 225 of the body 200 is formed in contact with the induction path 323.

In other words, the second dust collecting part 232 forms the air 600 remaining between the outer surface 510 of the tire 500 and the inner surface 430 of the mold 400 when the tire 500 is molded. Before discharging to the outside, the air 600 collected primarily by the first dust collecting unit 231 is collected once more to collect dust and to increase the pressure.

As shown in FIG. 8, the second embodiment has a discharge path smaller than the diameter φ 2 of the fastening part 320 so as to be in contact with the second dust collecting part 232 to be penetrated into the body 200. By the configuration of the 240a) to discharge the air 600 collected in the second dust collecting section 232 to the outside.

On the other hand, as shown in Figure 9 attached to the third embodiment is formed to be smaller than the diameter (φ2) of the fastening portion 320 to be in contact with the second dust collecting portion 232 to the inside of the body 200 A second discharge path 242 is formed in contact with the first discharge path 241 and the first discharge path 241 to be formed through the inside of the tapered portion 210 with a diameter larger than that of the first discharge path 241. do.

In the third exemplary embodiment, the diameters of the first discharge passage 241 and the second discharge passage 242 may be the same, but the diameter of the second discharge passage 242 may be the first discharge passage ( As the cross-sectional area becomes larger as the diameter of the 241 is increased, the flow rate of the air 600 that is collected in the second dust collecting part 232 and quickly flows out through the first discharge path 241 is reduced. Through the two discharge path 242 is to act to discharge more to the outside.

On the other hand, the seating portion 310 provided in the cap 300 according to the present invention is inserted into the rim 222 of the body 200 through the

fastening portions

220 and 320 to be seated on the locking step 223. By forming the dust collector 230 and the first dust collector 231 to maintain the above-mentioned plane clearance t1, and further provided on the lower portion of the dust collector 230, the first dust collector 231. The second dust collector 232 is to be formed.

In addition, the upper surface portion 312 of the cap 300 is negative (-), plus (+), semicircle, ellipse, triangular, square, It is possible to form the operation unit 330 to the groove of a certain depth by any one selected from various shapes such as pentagon, hexagon, octagon, star, etc., the present invention will not be limited to the cases listed above.

In addition, the upper surface portion 312 of the cap 300 to contact the outer peripheral surface (310a) of the negative (-)-shaped operation portion 330a by dividing the inlet hole 311 on both sides as shown in FIG. It is also possible to form a groove having a constant depth, or to form a groove having a constant depth so as to contact the outer peripheral surface 310a of the positive (+) shaped operation part 330b, which divides the inlet hole 311 in four directions. .

As described above, the operation units 330 to 330b are operated by fastening the cap 300 to the body 200 by using a tool such as a screwdriver or a wrench. This is caused by the rubber protrusion 511 or the powder. In case the air nozzle 100, that is, the inlet hole 611 is blocked, the entire air nozzle 100 mounted with an interference fit is easily removed from the mold 400 without easily dismantling from the mold 400 to easily remove foreign substances. To be removed.

In the present invention, the cap 300 to be fastened to the body 200 is formed by fastening means 221, 321 formed on the

fastening parts

220 and 320, for example, a screw or various fastening members having an equivalent function. 3 and 4, the lower surface portion 324 of the seating portion 310 provided in the cap 300 is fastened to the engaging jaw 223 of the body 200 so as to abut.

On the other hand, the inlet hole 311 according to the present invention is spaced apart in a straight line with the induction path 323 formed on the outer peripheral surface 320a of the fastening portion 320 as shown in Figure 7 to 9 attached to the cap 300 It is configured to be arranged coaxially to the seating portion 310 of the formed at equal intervals.

This is to separate the position forming the inlet hole (311) as shown in Figure 4 attached to the induction path 323 and the means to avoid being in line with.

In other words, it is preferable not to form an inlet hole 311 directly above the induction furnace 323. If the inlet hole 311 is formed to be in line with the induction furnace 323, The present invention is intended to prevent this because the rubber protrusion 511 can be formed in a long (l) form along the induction furnace 323 as shown in the accompanying FIG.

In addition, the gap (t1) of the diameter of the inlet hole 311 and the gap t1 of the dust collector 230 and the first dust collector 231 is formed in the same dimensional range, the difference in the pressure of the air 600 is introduced It is desirable to reduce the change.

For example, the gap t1 of the dust collecting part 230 and the first dust collecting part 231 is formed to be 0.05 to 0.5 mm based on 0.1 mm, and the diameter φ1 of the inflow hole 311 is also 0.1. It is preferable to form a 0.05 to 0.5mm based on mm.

In addition, the number of arrangement of the inlet hole 311 is preferably 10 to 20 to form a plurality, it may be possible to form a more extended 2 to 30 than this.

Furthermore, the present invention minimizes or blocks the formation of the pointed rubber protrusions 511 on the outer surface 510 of the tire 500 by forming a plurality of fine inlet holes 311. 511) to prevent the protruding length and thickness below the prescribed value.

In addition, the depth d1 of the inlet hole 311, that is, the thickness of the cap 300, as shown in the accompanying Figures 7 to 9 it is preferable that the upper limit is within 0.5mm, based on 0.3mm It is preferable to form in 0.15 to 0.5mm.

In addition, the total area of the inlet hole 311 is preferably formed to be 30 to 50% of the area of the dust collector 230 and the first dust collector 231, but is formed to be 20 to 60% more extended than this. Giving is also possible.

In addition, the groove depth of the induction furnace 323 according to the present invention is one on the outer peripheral surface 320a across the fastening means 321 provided in the fastening portion 320 to 0.05 to 0.5mm based on 0.1mm or It will form more than that. As a result, the second dust collecting part 232, the space part 232a, the discharge path 240, the first discharge path 241, and the second dust collecting part 232 provided at the rear side with respect to the air 600 flowing through the inlet hole 311. Inducing action into the discharge path 242, and the like.

Meanwhile, in the present invention, the second dust collecting part 232 and the space part 232a formed on the lower part of the fastening part 320 serve as an intermediate path of the air 600 discharged through the induction path 323. If the lower surface 225 of the fastening part 320 is in contact with the opposite surface 225 and the end 225a provided at the lower end of the fastening part 230, the external discharge action of the air 600 is blocked. As a result, the function of the air nozzle 100 cannot be exhibited.

Therefore, the depth d2 of the second dust collecting part 232 and the space part 232a is formed to be larger than the lower limit of the gap t1 of the dust collecting part 230 and the first dust collecting part 231, that is, 0.05 mm. Would be preferred.

As described above, according to the present invention, the dust collecting part 230 passes the air 600 remaining between the outer surface 510 of the tire 500 and the inner surface 430 of the mold 400 when the tire 500 is molded. ), The first dust collecting unit 231, the second dust collecting unit 232, the discharge path 240, the first discharge passage 241, the second discharge passage 242, etc. are completely discharged to the outside.

Therefore, the present invention can facilitate the removal of foreign substances even when the air nozzle 100 is not disassembled from the mold 400 even when the air nozzle 100 is blocked by the rubber protrusion 511 or powder thereof. Will contribute to that.

It will be apparent to those skilled in the art that various changes, modifications, and the like can be made without departing from the technical spirit of the present invention through the above description.

Therefore, the technical scope of the present invention should not be limited to the contents described in various exemplary embodiments as mentioned, but should be defined by the claims of the present invention.

Claims

An air nozzle 100 mounted to a plurality of holes 420 formed in the body 410 of the mold 400;

The cap 300 is fastened to the air nozzle 100 to the inside of the body 200 through fastening parts 220 and 320 so as to be separated from each other, so that the opposing surface 224 and the cap provided in the body 200 are separated. A dust collecting part 230 provided to form a gap t1 between the lower surface parts 324 of the seating part 310 provided in the 300;

An inlet hole 311 formed in the seating part 310 of the cap 300 in contact with the dust collecting part 230 upward;

An induction path 323 formed as a recess in the outer circumferential surface 320a of the fastening part 320 in contact with the dust collecting part 230 downwardly;

A space portion 232a formed on a lower portion of the fastening portion 320 in contact with the induction furnace 323; And

The air discharge device of the tire mold, characterized in that it comprises a discharge path 240 which is formed to be in contact with the space portion (232a) through the inside of the body (200).
According to claim 1, The diameter (φ1) of the inlet hole 311 and the gap (t1) of the dust collector 230, the air discharge device of the tire mold, characterized in that formed in the same dimension range.
According to claim 1, wherein the total area of the inlet hole (311) is the air discharge device of the tire mold, characterized in that formed in 20 to 60% of the area of the dust collector (230).
The apparatus of claim 1, wherein the depth d2 of the space portion 232a is larger than a lower limit of the gap t1 of the dust collector 230.
According to claim 1, wherein the discharge path 240 is an air discharge device of the tire mold, characterized in that formed in the same or larger than the diameter (φ 2) of the fastening portion (320).
An air nozzle 100 mounted to a plurality of holes 420 formed in the body 410 of the mold 400;

The cap 300 is fastened to the air nozzle 100 to the inside of the body 200 through fastening parts 220 and 320 so as to be separated from each other, so that the opposing surface 224 and the cap provided in the body 200 are separated. A first dust collecting part 231 provided to form a gap t1 between the lower surface parts 324 of the seating part 310 provided in the 300;

An inlet hole 311 formed in the seating part 310 of the cap 300 in contact with the first dust collecting part 231 upwardly;

An induction path 323 formed as a recess in the outer circumferential surface 320a of the fastening part 320 in contact with the first dust collecting part 231 downwardly;

A second dust collecting part 232 formed between the lower surface part 325 of the fastening part 320 and the opposing surface 225 of the body 200 in contact with the induction path 323; And

The air discharge device of the tire mold, characterized in that it comprises a discharge path (240a) formed to be in contact with the second dust collecting portion 232 through the inside of the body (200).
According to claim 6, The discharge path (240a) is an air discharge device of the tire mold, characterized in that formed smaller than the diameter (φ 2) of the fastening portion (320).
An air nozzle 100 mounted to a plurality of holes 420 formed in the body 410 of the mold 400;

The cap 300 is fastened to the air nozzle 100 to the inside of the body 200 through fastening parts 220 and 320 so as to be separated from each other, so that the opposing surface 224 and the cap provided in the body 200 are separated. A first dust collecting part 231 provided to form a gap t1 between the lower surface parts 324 of the seating part 310 provided in the 300;

An inlet hole 311 formed in the seating part 310 of the cap 300 in contact with the first dust collecting part 231 upwardly;

An induction path 323 formed as a recess in the outer circumferential surface 320a of the fastening part 320 in contact with the first dust collecting part 231 downwardly;

A second dust collecting part 232 formed between the lower surface part 325 of the fastening part 320 and the opposing surface 225 of the body 200 in contact with the induction path 323;

A first discharge path 241 formed to be in contact with the second dust collecting part 232 to be penetrated into the body 200; And

And a second discharge path (242) formed in a larger diameter than the first discharge path (241) in contact with the first discharge path (241).
The air discharge device of the tire mold according to claim 8, wherein the first discharge passage (241) is formed smaller than the diameter (φ 2) of the fastening portion (320).
The air discharge of the tire mold according to claim 6 or 8, wherein the gap t1 of the diameter φ1 of the inflow hole 311 and the gap t1 of the first dust collecting part 231 are formed in the same dimension range. Device.
The apparatus of claim 6 or 8, wherein the total area of the inflow hole (311) is 20 to 60% of the area of the first dust collecting part (231).
The apparatus of claim 6 or 8, wherein the depth d2 of the second dust collecting part 232 is greater than the lower limit of the gap t1 of the first dust collecting part 231. .
The apparatus of claim 1, wherein the inlet hole (311) is spaced apart in a straight line from the induction path (323) and is formed at equal intervals on the coaxial line.
The tire mold according to claim 1, wherein the seating portion 310 is inserted into the edge portion 222 of the body 200 and seated on the latching jaw 223. Air exhaust device.
The method of claim 1, wherein the induction path 323 is formed on one or more outer peripheral surfaces 320a across the fastening means 321 provided on the fastening part 320. Air discharge device for tire mold.