CN112810105A - Extrusion die capable of automatically adjusting section size - Google Patents
Extrusion die capable of automatically adjusting section size Download PDFInfo
- Publication number
- CN112810105A CN112810105A CN202110200288.7A CN202110200288A CN112810105A CN 112810105 A CN112810105 A CN 112810105A CN 202110200288 A CN202110200288 A CN 202110200288A CN 112810105 A CN112810105 A CN 112810105A
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- China
- Prior art keywords
- power element
- telescopic power
- micro
- mouth
- micro telescopic
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Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 43
- 238000010070 extrusion (rubber) Methods 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 16
- 239000005060 rubber Substances 0.000 claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000047 product Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 17
- 235000012438 extruded product Nutrition 0.000 description 5
- 239000011265 semifinished product Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009778 extrusion testing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
-
- 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
-
- 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
-
- 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
- B29L2030/007—Sidewalls
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an extrusion die capable of automatically adjusting the section size, and belongs to the technical field of rubber machinery. The extrusion die comprises a first die plate, a second die plate, a shifting sheet and a micro telescopic power element; the first die plate and the second die plate are opposite to each other in position and form a rubber extrusion channel, a micro telescopic power element is arranged in the second die plate, the telescopic direction of the micro telescopic power element points to the rubber extrusion channel, and the telescopic end of the micro telescopic power element is fixedly connected with a shifting piece; under the initial state of the micro telescopic power element, the tail end of the shifting piece, which is far away from the micro telescopic power element, is just flush with the side wall of the rubber extrusion channel. The invention adjusts the size of the extrusion channel by the tiny stroke generated by the miniature telescopic power element, not only can greatly improve the size precision of the extruded section of the product, but also has convenient and automatic adjustment mode, can improve the production efficiency and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of rubber machinery, in particular to an extrusion die capable of automatically adjusting the section size.
Background
In the prior art, the main rubber components (such as treads, sidewalls, apexes, cushion rubbers, etc.) in tire products are generally produced by mainly adopting an extrusion process, so that the extrusion process of the rubber components is an important process link in automobile tire production enterprises. The quality and accuracy of the extruded product directly affects the final quality and accuracy of the tire product, as well as the direct and process costs of tire production. The accuracy of the section size of the semi-finished product in the extrusion process plays a decisive role in the quality and the accuracy of the extruded product. The cross-sectional dimension of the extrusion die is one of the most important factors affecting the cross-sectional accuracy of the extruded product.
The adjustment of the section size of the extrusion die is a complex process which needs repeated repair and extrusion verification. In order to obtain an ideal mouth shape section size, a mouth shape debugging person tests the extrusion expansion rate of a product at a mouth shape in advance under the conditions of a certain extruder rotating speed and a linkage line access speed, namely under the condition of a reasonable speed matching parameter set, and compares the product section size required by the process, so that the section size of the extrusion mouth shape is manually repaired by depending on experience, after the mouth shape is repaired, a glue extrusion test is carried out, then the repair and retest are carried out, and after the product with the qualified section size is debugged, the repaired mouth shape plate parameters, the extruder rotating speed matched with the parameters and the linkage line access speed are recorded into an industrial personal computer in the form of formula parameters. At this moment, the debugging work of the mouth-shaped plate is finished, and the mouth-shaped plate can be put into production and use.
When the product with the specification needs to be produced, an operator directly selects and calls the formula with the specification in an industrial personal computer to produce. However, the production method cannot timely adjust errors caused by various factors which are difficult to avoid, namely, the anti-interference capability of the production method is poor, so that the dimensional accuracy of the extruded semi-finished product is poor. Because in the actual extrusion process, there are many factors that influence the accuracy of the extruded profile dimensions of the semifinished product of the extrusion process, such as: the forced feeding fluctuation caused by the processing error of the equipment, the fluctuation of the discharged rubber amount per rotation of the screw, the extrusion fluctuation caused by different production places and batches of raw materials, the quality fluctuation of the rubber compound in the same batch caused by the processing error of the previous rubber compound process, or unpredictable process errors caused by manual operation errors or other unexpected reasons, and the like, and the various forms of process errors or quality fluctuation can cause the section size of the semi-finished product in the extrusion process to exceed the fluctuation variation range allowed by the process requirements, thereby possibly causing unqualified products.
Based on this, the rubber extrusion process at present needs an extrusion die capable of adjusting the size of the broken code more automatically.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an extrusion die capable of automatically adjusting a cross-sectional dimension, in which a micro telescopic power element generates a micro stroke to adjust a size of an extrusion channel, so that not only can a cross-sectional dimension precision of product extrusion be greatly improved, but also an adjustment manner is convenient and automatic, production efficiency can be improved, and production cost can be reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an extrusion die capable of automatically adjusting the section size comprises a first die plate, a second die plate, a shifting sheet and a micro telescopic power element; the first die plate and the second die plate are opposite in position and form a rubber extrusion channel, a plurality of micro telescopic power element mounting grooves and a shifting piece groove are formed in the second die plate, a micro telescopic power element is mounted in each micro telescopic power element mounting groove, the telescopic direction of each micro telescopic power element points to the rubber extrusion channel, the telescopic end of each micro telescopic power element is fixedly connected with a shifting piece, the shifting piece is arranged in the shifting piece groove in the second die plate in a sliding mode, the micro telescopic power element mounting grooves are communicated with the shifting piece grooves, and the shifting piece grooves are communicated with the rubber extrusion channel; under the initial state of the micro telescopic power element, the tail end of the shifting sheet far away from the micro telescopic power element is just flush with the side wall of the rubber extrusion channel.
In the invention, preferably, the plectrum is precisely matched with the side wall of the plectrum groove and can slide relatively.
In the invention, preferably, a cover plate groove is formed on the outer side plate surface of the second mouth-shaped plate, and the cover plate groove is communicated with the micro telescopic power element mounting groove and the shifting piece groove; and a cover plate is arranged on the cover plate groove.
In the invention, preferably, when the cover plate is arranged in the cover plate groove, the surface of the cover plate is just flush with the outer side surface of the second die plate, the side surface of the cover plate is just flush with the side wall of the rubber extrusion channel, and the shifting sheet is precisely matched with the side wall of the cover plate and can slide relatively.
In the invention, preferably, the first mouth-shaped plate and the second mouth-shaped plate are detachably connected, and on the opposite surfaces of the first mouth-shaped plate and the second mouth-shaped plate, one surface is provided with a positioning pin, and the other surface is provided with a matched positioning hole.
In the invention, preferably, the micro telescopic power element is a micro servo electric cylinder or a micro hydraulic oil cylinder.
In the invention, preferably, the plurality of shifting pieces are arranged, the notches of the shifting piece grooves are communicated with each other, and the plurality of shifting pieces are in close contact with each other.
In the invention, preferably, one or more micro telescopic power elements are correspondingly arranged on each shifting sheet.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the invention, one or more sets of poking sheets are added in the mouth plate component, so that under the condition that the size of the section of a product fluctuates due to various factors, a tiny stroke can be generated through the miniature power element, the poking sheets arranged in the mouth plate can extend or retract to the corresponding stroke, and the size of the product extrusion channel in the mouth plate is further controlled, so that the size precision of the section of the extruded product can be greatly improved, the adjusting mode is convenient and automatic, the production efficiency can be improved, and the production cost can be reduced.
Drawings
FIG. 1 is a schematic view of an extrusion die according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view at a-a of fig. 1.
Fig. 3 is a partial enlarged view at I in fig. 2.
Wherein, 1-1, a first template; 1-2, a second mouth plate; 1-3, a cover plate; 1-4, 1# plectrum; 1-5 and 2# plectrum; 1-6, a micro telescopic power element; 1-7, 1# screw; 1-8, 2# screw; 1-9, positioning pins; 1-10, extrusion channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The drawings are only for purposes of illustration and are not intended to be limiting, certain elements of the drawings may be omitted, enlarged or reduced to better illustrate the embodiments of the present invention, and do not represent the size of the actual product, and it is understood that some well-known structures, elements and descriptions thereof in the drawings may be omitted for persons skilled in the art.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to solve the problem that the section size is difficult to accurately adjust when the section size in the extrusion process of a rubber product exceeds the allowable fluctuation range of the process requirement, the invention provides an extrusion die capable of automatically adjusting the section size, which is shown in figures 1 and 2 and comprises a first die plate 1-1, a second die plate 1-2, a shifting sheet 1-4/1-5 and a micro telescopic power element 1-6; the first die plate 1-1 and the second die plate 1-2 are opposite to each other in position and form a rubber extrusion channel 1-10, and the first die plate 1-1 and the second die plate 1-2 are connected with a machine head of an extruder in a conventional mode; the improvement of the invention is that a plurality of micro-telescopic power element mounting grooves and plectrum grooves are arranged in a second mouth-shaped plate 1-2, micro-telescopic power elements 1-6 are arranged in the micro-telescopic power element mounting grooves, the telescopic direction of the micro-telescopic power elements 1-6 points to a rubber extrusion channel 1-10, the telescopic ends of the micro-telescopic power elements 1-6 are fixedly connected with plectrums 1-4/1-5, the plectrums 1-4/1-5 are arranged in the plectrum grooves in the second mouth-shaped plate 1-2 in a sliding manner, the micro-telescopic power element mounting grooves are communicated with the plectrum grooves, and the plectrum grooves are communicated with the rubber extrusion channel 1-10; in the initial state of the micro telescopic power element 1-6, the end of the poking sheet 1-4/1-5 far away from the micro telescopic power element 1-6 is just flush with the side wall of the rubber extrusion channel 1-10. The micro telescopic power element 1-6 in the invention can receive an external instruction, when the section size of a certain part of the rubber product is larger, the micro telescopic power element 1-6 of the corresponding part can extend for a certain distance under the control of the external instruction, and the plectrum 1-4/1-5 is pushed out of the extrusion channel 1-10 for a certain distance, so that the size of the extrusion channel 1-10 is adjusted, and the automatic adjustment of the section size of the rubber product is realized. After the extrusion, when the section size of a certain part of the rubber product is smaller, the micro telescopic power element 1-6 of the corresponding part can contract for a certain distance under the control of an external instruction, and the plectrum 1-4/1-5 is retracted, so that the size of the extrusion channel 1-10 is adjusted, and the automatic adjustment of the section size of the rubber product is realized.
In some preferred embodiments of the present invention, the pick 1-4/1-5 is precisely fitted and slidable with respect to the side walls of the pick groove, and the fit clearance is as small as 0.01-0.03mm, so that the glue does not penetrate into the clearance. Thereby reducing the possibility of glue overflow to the plectrum groove and the mounting groove of the micro-telescopic power element. In order to make the whole more beautiful and convenient to overhaul, a cover plate groove is formed in the outer side plate surface of the second die plate 1-2 and is communicated with the micro telescopic power element mounting groove and the shifting piece groove; the cover plate groove is provided with a cover plate 1-3, the cover plate 1-3 can be fixed with a second mouth-shaped plate 1-2 through a # 1 screw 1-7, and the cover plate 1-3 is opened, so that the internal micro telescopic power element 1-6 and the shifting piece 1-4/1-5 can be observed and overhauled. When the cover plate 1-3 is arranged in the cover plate groove, the surface of the cover plate 1-3 is just flush with the outer surface of the second mouth-shaped plate 1-2, the side surface of the cover plate 1-3 is just flush with the side wall of the rubber extrusion channel 1-10, and the shifting piece is precisely matched with the side wall of the cover plate 1-3 and can slide relatively, so that the whole body is more tidy and attractive.
In some preferred embodiments of the present invention, the first and second plates 1-1 and 1-2 are detachably connected, and particularly connected by screws, such as the illustrated 2# screws 1-8, and the first and second plates 1-1 and 1-2 have opposite surfaces, one of which is provided with positioning pins 1-9 and the other of which is provided with matching positioning holes, so as to facilitate the determination of the relative positions of the two plates, and improve the installation efficiency and the installation accuracy.
The micro telescopic power elements 1-6 are micro servo electric cylinders or micro hydraulic oil cylinders or other electromechanical elements capable of generating micro strokes. The power of the micro-telescopic power elements 1-6 is directed to the outside by means of slots, not shown schematically, in the second plate 1-2.
In some preferred embodiments of the present invention, a plurality of the pulling sheets are provided, the notches of the pulling sheet grooves are communicated with each other, and the plurality of the pulling sheets 1-4/1-5 are in close contact with each other. A plurality of rubber products can be arranged according to the section shapes of the rubber products and the section sizes to be controlled, so that the section size parameters of all parts of the products can be adjusted and controlled. For example, FIG. 1 illustrates an extruded tread article, with # 1 paddles 1-4a/1-4b and # 2 paddles 1-5a/1-5b positioned to control extrusion channels 1-10, respectively, in the side and crown portions. Of course, different shapes of the plectrum and different numbers of plectrums can be arranged for different product extrusions. Each shifting piece can be correspondingly provided with one or more micro telescopic power elements, one shifting piece is provided with a plurality of micro telescopic power elements, which is favorable for the stability of the shifting piece in movement, for example, in fig. 1, four micro telescopic power elements (1-6c/1-6d/1-6e/1-6f) are correspondingly arranged on two shifting pieces at the crown part, and two micro telescopic power elements (1-6a/1-6b/1-6g/1-6h) are respectively arranged on the shifting pieces at the side surfaces.
According to the invention, one or more sets of poking sheets are added in the mouth plate component, so that under the condition that the size of the section of a product fluctuates due to various factors, a tiny stroke can be generated through the miniature power element, the poking sheets arranged in the mouth plate can extend or retract to the corresponding stroke, and the size of the product extrusion channel in the mouth plate is further controlled, so that the size precision of the section of the extruded product can be greatly improved, the adjusting mode is convenient and automatic, the production efficiency can be improved, and the production cost can be reduced.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a but extrusion die of automatically regulated cross section size which characterized in that: comprises a first mouth-shaped plate, a second mouth-shaped plate, a shifting sheet and a micro telescopic power element; the first die plate and the second die plate are opposite in position and form a rubber extrusion channel, a plurality of micro telescopic power element mounting grooves and a shifting piece groove are formed in the second die plate, a micro telescopic power element is mounted in each micro telescopic power element mounting groove, the telescopic direction of each micro telescopic power element points to the rubber extrusion channel, the telescopic end of each micro telescopic power element is fixedly connected with a shifting piece, the shifting piece is arranged in the shifting piece groove in the second die plate in a sliding mode, the micro telescopic power element mounting grooves are communicated with the shifting piece grooves, and the shifting piece grooves are communicated with the rubber extrusion channel; under the initial state of the micro telescopic power element, the tail end of the shifting sheet far away from the micro telescopic power element is just flush with the side wall of the rubber extrusion channel.
2. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: the shifting sheet is precisely matched with the side wall of the shifting sheet groove and can slide relatively.
3. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: a cover plate groove is formed in the outer side plate surface of the second mouth-shaped plate and is communicated with the micro telescopic power element mounting groove and the shifting piece groove; and a cover plate is arranged on the cover plate groove.
4. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 3, wherein: when the apron was installed at the apron inslot, the face of apron just in time parallel and level with the outside face of second mouth of the staff board, the side of apron just in time parallel and level with the lateral wall that the passageway was extruded to rubber, plectrum and apron lateral wall precise fit and relative slip.
5. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: the first mouth-shaped plate and the second mouth-shaped plate are detachably connected, one face of each of the first mouth-shaped plate and the second mouth-shaped plate is provided with a positioning pin, and the other face of each of the first mouth-shaped plate and the second mouth-shaped plate is provided with a matched positioning hole.
6. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: the micro telescopic power element is a micro servo electric cylinder or a micro hydraulic oil cylinder.
7. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: the plectrum sets up a plurality ofly, and the notch department in plectrum groove communicates each other, and mutual in close contact with between a plurality of plectrums.
8. An extrusion die capable of automatically adjusting a cross-sectional dimension as set forth in claim 1, wherein: each shifting piece is correspondingly provided with one or more micro telescopic power elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200288.7A CN112810105A (en) | 2021-02-07 | 2021-02-07 | Extrusion die capable of automatically adjusting section size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200288.7A CN112810105A (en) | 2021-02-07 | 2021-02-07 | Extrusion die capable of automatically adjusting section size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112810105A true CN112810105A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110200288.7A Pending CN112810105A (en) | 2021-02-07 | 2021-02-07 | Extrusion die capable of automatically adjusting section size |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000225639A (en) * | 1999-02-05 | 2000-08-15 | Mitsubishi Chem Mkv Co | Manufacturing apparatus for extrusion-molded article |
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| DE102010010872A1 (en) * | 2010-03-10 | 2011-09-15 | Heinz Gross | Flow channel for use in e.g. extrusion nozzle to convey plastic melt, has flexible portion whose surface area forms flow channel wall and is changed in position in limited manner, where flexible portion is made of rubber or elastomer |
| CN104476752A (en) * | 2014-11-18 | 2015-04-01 | 山东八一轮胎制造有限公司 | Die plate for compound extrusion line extruder head of radial tire |
| CN109130166A (en) * | 2017-06-28 | 2019-01-04 | 波音公司 | The device and method for shaping extrudable material |
| CN109808145A (en) * | 2019-02-18 | 2019-05-28 | 朝阳浪马轮胎有限责任公司 | A kind of adjustable tyre surface shape of the mouth as one speaks panel assembly of thickness |
| JP2020006622A (en) * | 2018-07-10 | 2020-01-16 | 住友ゴム工業株式会社 | Die plate for rubber extruder, method for adjusting die plate for rubber extruder, and system for adjusting die plate for rubber extruder |
| CN211279676U (en) * | 2019-10-15 | 2020-08-18 | 四川佳世特橡胶有限公司 | Adjustable extrusion die and rubber extrusion production device |
| CN111761802A (en) * | 2020-07-27 | 2020-10-13 | 马鞍山市威利坚机械科技有限公司 | Mouth plate with adjustable outlet size |
| CN112277138A (en) * | 2020-10-10 | 2021-01-29 | 湖南臻镜绿色建筑科技有限公司 | Prefabricated plate extrusion die and prefabricated plate production equipment |
| CN214395342U (en) * | 2021-02-07 | 2021-10-15 | 桂林理工大学 | Extrusion die capable of automatically adjusting section size |
-
2021
- 2021-02-07 CN CN202110200288.7A patent/CN112810105A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000225639A (en) * | 1999-02-05 | 2000-08-15 | Mitsubishi Chem Mkv Co | Manufacturing apparatus for extrusion-molded article |
| CN101407105A (en) * | 2008-11-28 | 2009-04-15 | 昊华南方(桂林)橡胶有限责任公司 | Adjustable rubber die plate |
| DE102010010872A1 (en) * | 2010-03-10 | 2011-09-15 | Heinz Gross | Flow channel for use in e.g. extrusion nozzle to convey plastic melt, has flexible portion whose surface area forms flow channel wall and is changed in position in limited manner, where flexible portion is made of rubber or elastomer |
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| CN214395342U (en) * | 2021-02-07 | 2021-10-15 | 桂林理工大学 | Extrusion die capable of automatically adjusting section size |
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