CN114643689B - Tire five-composite tread extrusion pre-orifice type convenient for tread rubber extrusion - Google Patents
Tire five-composite tread extrusion pre-orifice type convenient for tread rubber extrusion Download PDFInfo
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- CN114643689B CN114643689B CN202210374587.7A CN202210374587A CN114643689B CN 114643689 B CN114643689 B CN 114643689B CN 202210374587 A CN202210374587 A CN 202210374587A CN 114643689 B CN114643689 B CN 114643689B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 8
- 238000010070 extrusion (rubber) Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004513 sizing Methods 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims description 33
- 230000001070 adhesive effect Effects 0.000 claims description 33
- 238000002955 isolation Methods 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003292 glue Substances 0.000 description 18
- 238000013461 design Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
- B29L2030/002—Treads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the field of tire manufacturing, in particular to a tire five-composite tread extrusion pre-mold facilitating tread rubber extrusion, which comprises a pre-mold body, wherein a plurality of sizing material channels with inlets positioned at the right rear and outlets positioned at the right front are arranged on the pre-mold body, and the sizing material channels comprise: the upper crown rubber channel and the lower crown rubber channel are positioned right in front and distributed up and down, the upper crown rubber channel and the lower crown rubber channel are separated by a transverse rib, and the end face of the transverse rib is retracted to a certain distance towards the inside of the pre-mouth body. The invention has the advantages that when the rubber outlet on the outer die is smaller (especially for the case of thin tread rubber), the upper tread rubber can be combined with the lower tread rubber in the channel, and can flow out in a relatively smooth channel without being blocked.
Description
Technical Field
The invention relates to the field of tire manufacturing, in particular to a tire five-composite tread extrusion pre-opening type convenient for tread rubber extrusion.
Background
The development of the tire industry in the world is rapid, the development of technology drives the innovation of the tire, with the increasing requirements of tires of passenger vehicles on environment protection, low rolling resistance, static electricity resistance, wet skid resistance, grip force of complex road surfaces and the like, white carbon black materials are widely applied in tire manufacture, but the content of white carbon black on the tread is high, so that the conductivity is poor, serious potential safety hazards exist, if the passenger vehicle runs on the road at high speed, static electricity generated by the tire cannot be led into the road surface, and vehicles, people life and property safety are seriously threatened when the passenger vehicle runs on air drying. Therefore, a tire having a high white carbon black content of the tread rubber needs to be solved in consideration of the problem of electric conduction.
Technological innovation is accompanied by new researches and new creations of tires, along with continuous improvement of life of people, different environments, climates, roads and vehicles have more ideal requirements on passenger car tires, functional attention and researches on different parts of the tires are thinner and thinner, different performance requirements on different positions of the tires, such as snow tires, are met, in order to achieve snow gripping performance, crown layers on the snow tires should keep good flexibility at low temperature, good snow gripping performance of the tires is ensured, and lower crown layers have enough rigidity to ensure good durability of the tires. The base rubber has good adhesion performance, smooth tire building and manufacturing, ensures vibration buffering of the tire, has good viscosity as well as the wing rubber, and has excellent design, mature and good process flow and manufacturing, and excellent design.
At present, most domestic tire production units are two-compound, three-compound and four-compound extrusion equipment, the pre-mouth shape produced at present cannot meet the requirement that one pre-mouth shape can not only realize five-compound and four-compound tire treads with conductive rubber, but also produce four-compound and three-compound tire treads without conductive rubber, and tread tires in more compound forms cannot be met according to the development and design of new products, so that the development of tire enterprises is hindered.
Although related patents have disclosed five-compound pre-opening shapes, for example, chinese patent application (publication No. CN111267319A, publication No. 20200612) discloses a five-compound tire tread extrusion pre-opening shape, which comprises a side wing rubber channel, an upper crown rubber channel, a lower crown rubber channel, a transition rubber channel and a side wing rubber channel, an upper crown rubber channel, a lower crown rubber channel and a transition rubber channel which are symmetrically arranged on one side, wherein the conductive rubber channel is positioned in the center of the pre-opening shape.
However, the above-mentioned pre-orifice has the following problems: the outer end face of the connecting rib separating the upper crown rubber channel from the lower crown rubber channel in the pre-opening type is coplanar with the outer end face of the pre-opening type, and the thickness of an opening on the outer opening type (namely a sample plate for extruding rubber material) is smaller in general, so that only a small gap exists between an outlet of the upper crown rubber channel and an outlet on the outer opening type, the upper crown rubber is difficult to extrude, meanwhile, the upper crown rubber occupies larger specific gravity in the rubber material, the flowing pressure of the upper crown rubber is large, the upper crown rubber is accumulated in the channel, and the pressure born on the connecting rib is larger, so that the pre-opening type is unfavorable for long-time use.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a tire five-compound tread extrusion pre-opening type which is convenient for extruding tread rubber, wherein a separation rib between an upper crown rubber and a lower crown rubber is retracted towards the inner side of a channel by a distance, so that the upper crown rubber is combined with the lower crown rubber in the channel and can smoothly flow out.
For the purpose of the invention, the following technical scheme is adopted for implementation:
The utility model provides a five compound tread extrusion pre-mouthfuls of tire convenient to tread rubber is extruded, is provided with a plurality of inlets on the pre-mouthful of type body in advance and is located behind, and the export is located the sizing material passageway in front, and sizing material passageway includes: the upper crown rubber channel and the lower crown rubber channel are positioned right in front and distributed up and down, the upper crown rubber channel and the lower crown rubber channel are separated by a transverse rib, and the end face of the transverse rib is retracted to a certain distance towards the inside of the pre-mouth body.
Preferably, the distance of retraction is 10 to 70mm.
Preferably, the sizing channel further comprises: the conductive adhesive channels are positioned in the middle of the right upper inclined plane, the wing adhesive channels are positioned at the left side and the right side of the right upper inclined plane, and the base adhesive channel is positioned at the right lower inclined plane; the conductive adhesive channel and the upper crown adhesive channel are separated by an upper isolation rib extending transversely, so that the conductive adhesive channel forms an independent channel.
Preferably, the upper portion of the conductive paste channel is provided with an opening opened upward.
Preferably, the outlet of the conductive adhesive channel is positioned at the middle position of the left and right directions of the pre-opening body, the thickness of the outlet is 20-40 mm, and the width of the outlet is 20-50 mm.
Preferably, the thickness of the upper isolation rib is 2-10 mm.
Preferably, the outlet positions of the left wing glue channel and the right wing glue channel are bilaterally symmetrical with respect to the central line of the pre-mouth body, and the outlet positions of the upper crown glue channel, the lower crown glue channel and the base glue channel are bilaterally symmetrical with respect to the central line of the pre-mouth body.
Preferably, the lower crown rubber channel and the base rubber channel are separated by a lower isolation rib, and the thickness of the lower isolation rib is 1-5 mm.
Preferably, the outlet thickness of the upper crown rubber channel is 4-10 mm, the outlet thickness of the lower crown rubber channel is 1-5 mm, and the outlet thickness of the base rubber channel is 1-5 mm; the transverse widths of the upper crown rubber channel, the lower crown rubber channel and the base rubber channel are 100-400 mm; the connection parts of the side walls positioned at the left side and the right side of the upper crown rubber channel and the lower crown rubber channel and the inner side walls of the wing rubber channels are provided with oblique isolation ribs, and the included angle between the oblique isolation ribs and the lower isolation ribs is 10-80 degrees.
In summary, the present invention has the advantages that when the rubber outlet on the outer die is smaller (especially for the case of thin tread rubber), the upper tread rubber can be combined with the lower tread rubber in the channel, and can flow out through a relatively smooth channel without being blocked.
Drawings
Fig. 1 is a perspective view of a pre-form.
Fig. 2 is a schematic view of the structure of the front face of the pre-orifice mold.
FIG. 3 is a schematic view of the structure of the back of the pre-form.
Fig. 4 is a cross-sectional view at A-A in fig. 2.
Fig. 5 is a partial enlarged view at B in fig. 4.
Fig. 6 is a schematic view of the structure of the back of the outer die.
Fig. 7 is a schematic view of the structure of the front surface of the outer die.
Fig. 8 is a schematic view of the explosive structure of the outer die and insert.
Fig. 9 is a schematic view of the insert.
FIG. 10 is a schematic diagram of a two-compound structure.
Fig. 11 is a schematic diagram of a three-compound structure.
Fig. 12 is a schematic structural view of a four-composite tape conductive paste.
FIG. 13 is a schematic representation of the structure of a four compound crown bilayer.
Fig. 14 is a schematic diagram of a five-compound structure.
Detailed Description
As shown in fig. 1, a tire five-compound tread extrusion pre-mold comprises a pre-mold body, wherein the pre-mold body is trapezoid when seen from the side, and for convenience in subsequent description of the relative positions of structures on the pre-mold body, the surface of the pre-mold body is named as follows: the region located in the middle of the front face of the pre-form body is defined as the front face, the region located in the upper part of the front face of the pre-form body is defined as the upper inclined face, the region located in the lower part of the front face of the pre-form body is defined as the lower inclined face, and the region located in the rear face of the pre-form body is defined as the rear face.
As shown in fig. 2 and 3, a conductive paste passage 1 extending in the front-rear direction is provided in the middle of the straight upper inclined surface, and an opening opened upward is provided in the upper portion of the conductive paste passage 1, the inlet of the conductive paste passage 1 is located in the upper portion of the straight rear, and the outlet is located in the middle of the straight front. The conductive adhesive channel 1 is a slope with a high rear side and a low front side as seen from the side of the pre-orifice body. The thickness of the outlet of the conductive adhesive channel 1 is 20-40 mm, and the width is set to 20-50 mm due to the design diversity of the positions of the conductive adhesive. According to the positions of the tire grooves, the design requirement within 0-50 mm from the middle point of the tread type rubber is met, and the conductive rubber 1-5 mm wide groove is embodied in the outer die 9.
As shown in fig. 2 and 3, a wing glue channel 2 extending in the front-rear direction is provided on both the left and right sides of the straight upper inclined surface, and the left and right wing glue channels 2 are symmetrically provided. The upper part of the wing glue channel 2 is provided with an opening which is opened upwards, the inlet of the wing glue channel 2 is positioned at the upper part of the right back, and the outlet is positioned at the middle part of the right front. The wing glue channel 2 gradually approaches towards the middle from the back to the front as seen from the front of the pre-mouth body. The wing glue channel 2 is an inclined plane with high rear side and low front side seen from the side of the pre-mouth body.
As shown in fig. 2 and 3, an upper crown rubber channel 3 and a lower crown rubber channel 4 which are distributed up and down and are isolated from each other are arranged on the front face, the upper crown rubber channel 3 is positioned below the conductive rubber 1, and the left and right sides of the upper crown rubber channel 3 and the lower crown rubber channel 4 are positioned between the left and right wing rubber channels 2. The upper crown rubber channel 3 and the lower crown rubber channel 4 extend from back to front, the respective inlets are located in the middle of the right back and distributed up and down, and the respective outlets are located in the middle of the right front and distributed up and down. The outlet thickness of the upper crown rubber channel 3 is 4-10 mm, and the outlet thickness of the lower crown rubber channel 4 is 1-5 mm. The upper crown gel channel 3 and the lower crown gel channel 4 are gradually drawn toward the middle from the rear to the front, seen from the front of the pre-mouth body. Seen from the side of the pre-mouth body, the upper crown rubber channel 3 is a bevel with high rear side and low front side, and the lower crown rubber channel 4 is a bevel with low rear side and high front side.
As shown in fig. 2 and 3, a base rubber channel 5 extending in the front-rear direction is provided on the right lower inclined surface, the base rubber channel 5 is located below the lower crown rubber channel 4, and the left and right sides of the base rubber channel 5 are located between the left and right wing rubber channels 2. The inlet of the base adhesive channel 5 is positioned at the lower part of the right back, the outlet is positioned at the lower part of the right front, and the thickness of the outlet is 1-5 mm. The base glue channel 5 gradually closes from back to front towards the middle seen from the front of the pre-form body. The base glue channel 5 is a bevel with a low back side and a high front side seen from the side of the pre-orifice body.
As shown in fig. 2, the conductive adhesive channels 1 are arranged in a right-left symmetrical manner on both sides of the upper middle position when seen from the front of the pre-mouth body. The upper crown rubber channel 3, the lower crown rubber channel 4 and the base rubber channel 5 are sequentially arranged in parallel at the upper, middle and lower positions, and the center line is bilaterally symmetrical.
As shown in fig. 4 and 5, the conductive adhesive channel 1 and the upper crown rubber channel 3 are separated by an upper isolation rib 6, and the thickness of the upper isolation rib 6 is 2-10 mm. The upper crown rubber channel 3 and the lower crown rubber channel 4 are separated by a transverse rib 7, and the thickness of the transverse rib 7 is 1-5 mm. The lower crown rubber channel 4 and the base rubber channel 5 are separated by a lower isolation rib 8, and the thickness of the lower isolation rib 8 is 1-5 mm. The lateral widths of the upper crown rubber channel 3, the lower crown rubber channel 4 and the base rubber channel 5 are 100-400 mm according to the design requirements of different widths of the upper crown rubber, the lower crown rubber and the base rubber. The connection parts of the side walls positioned on the left side and the right side of the upper crown rubber channel 3 and the lower crown rubber channel 4 and the inner side wall of the wing rubber channel 2 are provided with oblique isolation ribs 10, the angle of the interface between the wing rubber and the main rubber on the tread rubber is determined by the oblique isolation ribs 10, and the included angle between the oblique isolation ribs 10 and the lower isolation ribs 8 is 10-80 degrees.
After adopting above-mentioned structure, have following effect: the conductive adhesive channel 1 is an independent opening type upward opening channel and is positioned on the right upper inclined surface of the pre-opening type body, so that the position requirements of different conductive adhesives with positive offset are met to the greatest extent. More specifically, the conductive adhesive needs to be positioned on the pattern blocks after forming to realize the conductive effect, and the positions of the pattern blocks of different tires are different, so that the positions of the conductive adhesive need to be adjusted when the conductive adhesive passes through the conductive adhesive channels.
The invention has the advantages that the invention not only can extrude the tread of the five-compound tire, but also can extrude the tread of the four-compound, three-compound and two-compound tire, and more importantly, the position of the conductive adhesive can meet the flexible deviation requirement of different patterns, and can meet the complex tire design with different compound forms and different performance requirements.
The following describes the structure of the outer die 9 briefly, as shown in fig. 7 and 8, the outer die 9 includes an upper outer die 91 and a lower outer die 92 which are separable from each other up and down, and a glue outlet 93 is formed at the joint of the upper outer die 91 and the lower outer die 92, and the thickness of the glue outlet 93 is generally 5-15 mm. As shown in fig. 8 and 9, in order to control the position of the conductive adhesive, an installation groove 911 is provided on the upper outer die 91, an insert 94 is detachably installed in the installation groove 911, a drainage hole 941 communicated with the conductive adhesive channel 1 is provided on the insert 94, a drainage channel 942 is provided at the end of the drainage hole 941, and the width of the drainage channel 942 is 1-5 mm. The drainage channel 942 extends downwardly into the glue outlet 93. When the conductive adhesive is extruded, the conductive adhesive firstly enters the conductive adhesive channel 1 and flows along the conductive adhesive channel 1, enters the drainage hole 941 of the insert 94 and finally enters the drainage channel 942, namely, is compounded with other adhesive. When the position of the conductive adhesive relative to the center of the tread-type adhesive needs to be changed, only the insert 94 needs to be replaced or the outer die 9 needs to be redesigned, so that different drainage channels 942 can be provided, and the position of the conductive adhesive is changed under the condition of sharing the pre-die.
Fig. 10 to 14 show different composite forms of treads made by the pre-form of the present invention.
Meanwhile, the tread rubber, namely the upper crown rubber and the lower crown rubber, is the rubber with the largest flow, in order to avoid the situation that the thickness of an outer mouth type rubber outlet 93 is insufficient to meet the condition that the upper crown rubber and the lower crown rubber enter together, the problem that the extrusion of the upper crown rubber and the lower crown rubber is unsmooth and the flow pressure is large is solved, as shown in figure 5, the transverse ribs 7 between an upper crown rubber channel 3 and a lower crown rubber channel 4 are retracted to the inner side of the channel for a certain distance, and the distance between the end faces of the transverse ribs 7 retracted inwards and the end faces of a pre-mouth type body is preferably 10-70 mm. The advantage of this design is that when the outlet 93 on the outer die is small, especially for the case of very thin tread band, the upper tread band can combine with the lower tread band in the channel, and can flow out with a relatively unobstructed channel without being blocked. More specifically, the thickness of the whole glue outlet 93 of the outer die is generally 5-8 mm, and as mentioned above, the thickness of the transverse rib 7 of the pre-die is 1-5 mm, if the outer end surface of the transverse rib 7 is coplanar with the outer end surface of the pre-die as in the prior art, the upper crown glue channel 3 will be blocked by the rib and cannot flow out smoothly from the channel.
Claims (6)
1. The utility model provides a five compound tread extrusion pre-mouthfuls of tire convenient to tread rubber is extruded, is provided with a plurality of inlets on the pre-mouthful of type body in advance and is located behind, and the export is located the sizing material passageway in front, and sizing material passageway includes: the upper crown rubber channel (3) and the lower crown rubber channel (4) are positioned in front and distributed up and down, and the device is characterized in that the upper crown rubber channel (3) and the lower crown rubber channel (4) are separated by a transverse rib (7), and the end surface of the transverse rib (7) is retracted to a certain distance towards the inside of the pre-mouth body; the retracting distance is 10-70 mm; the sizing channel further comprises: the conductive adhesive channel (1) is positioned in the middle of the right upper inclined plane, the wing adhesive channels (2) are positioned at the left side and the right side of the right upper inclined plane, and the base adhesive channel (5) is positioned at the right lower inclined plane; the conducting resin channel (1) and the upper crown rubber channel (3) are separated by an upper isolation rib (6) extending transversely, so that the conducting resin channel (1) forms an independent channel; the outlet thickness of the upper crown rubber channel (3) is 4-10 mm, the outlet thickness of the lower crown rubber channel (4) is 1-5 mm, and the outlet thickness of the base rubber channel (5) is 1-5 mm; the transverse widths of the upper crown rubber channel (3), the lower crown rubber channel (4) and the base rubber channel (5) are 100-400 mm; the connection parts of the side walls of the left side and the right side of the upper crown rubber channel (3) and the lower crown rubber channel (4) and the inner side walls of the wing rubber channels (2) are provided with oblique isolation ribs (10), and the included angle between the oblique isolation ribs (10) and the lower isolation ribs (8) is 10-80 degrees.
2. A tyre five-compound tread extrusion pre-form for facilitating tread band extrusion as claimed in claim 1, characterized in that the upper part of the conductive band channel (1) is provided with an opening which opens upwards.
3. The tire five-composite tread extrusion pre-mold for facilitating tread rubber extrusion according to claim 1, wherein the outlet of the conductive rubber channel (1) is positioned at the middle position of the pre-mold body in the left-right direction, the thickness of the outlet is 20-40 mm, and the width is 20-50 mm.
4. The tire five-composite tread extrusion pre-orifice mold convenient for tread rubber extrusion according to claim 1, wherein the thickness of the upper isolation rib (6) is 2-10 mm.
5. A five-compound tread extrusion pre-mold for tires for facilitating tread rubber extrusion according to claim 1, wherein the outlet positions of the left and right wing rubber channels (2) are bilaterally symmetrical with respect to the center line of the pre-mold body, and the outlet positions of the upper crown rubber channel (3), the lower crown rubber channel (4) and the base rubber channel (5) are bilaterally symmetrical with respect to the center line of the pre-mold body.
6. The tire five-compound tread extrusion pre-orifice type convenient for tread rubber extrusion according to claim 1, wherein the lower crown rubber channel (4) and the base rubber channel (5) are separated by a lower isolation rib (8), and the thickness of the lower isolation rib (8) is 1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210374587.7A CN114643689B (en) | 2022-04-11 | 2022-04-11 | Tire five-composite tread extrusion pre-orifice type convenient for tread rubber extrusion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210374587.7A CN114643689B (en) | 2022-04-11 | 2022-04-11 | Tire five-composite tread extrusion pre-orifice type convenient for tread rubber extrusion |
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| Publication Number | Publication Date |
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| CN114643689A CN114643689A (en) | 2022-06-21 |
| CN114643689B true CN114643689B (en) | 2024-06-25 |
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| CN202210374587.7A Active CN114643689B (en) | 2022-04-11 | 2022-04-11 | Tire five-composite tread extrusion pre-orifice type convenient for tread rubber extrusion |
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| CN114750390B (en) * | 2022-04-11 | 2024-06-25 | 中策橡胶集团股份有限公司 | Tire five-composite tread extrusion pre-opening type capable of controlling position of conductive adhesive |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN218453168U (en) * | 2022-04-11 | 2023-02-07 | 中策橡胶集团股份有限公司 | Five compound treads of tire extrude mouth of a mouthful types in advance convenient to tread rubber is extruded |
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| US20080315453A1 (en) * | 2007-06-22 | 2008-12-25 | Michael Joseph Molitor | Process for the production of polyester nanocomposites |
| CN203221640U (en) * | 2013-04-15 | 2013-10-02 | 桂林橡胶设计院有限公司 | Five rubber extrusion machine combined head device |
| FR3046104B1 (en) * | 2015-12-23 | 2017-12-22 | Michelin & Cie | METHOD FOR COEXTRUSION OF A COMPLEX RUBBER PROFILE FOR THE MANUFACTURE OF A PNEUMATIC |
| CN111267318A (en) * | 2020-03-23 | 2020-06-12 | 三角（威海）华盛轮胎有限公司 | Extrusion die device with conductive structure suitable for tread three-composite extrusion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN218453168U (en) * | 2022-04-11 | 2023-02-07 | 中策橡胶集团股份有限公司 | Five compound treads of tire extrude mouth of a mouthful types in advance convenient to tread rubber is extruded |
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