CN1096477A - The method for mixing raw materials of EVA foamed shoe sole - Google Patents

The method for mixing raw materials of EVA foamed shoe sole Download PDF

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Publication number
CN1096477A
CN1096477A CN93106973A CN93106973A CN1096477A CN 1096477 A CN1096477 A CN 1096477A CN 93106973 A CN93106973 A CN 93106973A CN 93106973 A CN93106973 A CN 93106973A CN 1096477 A CN1096477 A CN 1096477A
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China
Prior art keywords
raw materials
mixing
shoe sole
foamed shoe
raw material
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Pending
Application number
CN93106973A
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Chinese (zh)
Inventor
韩永麟
朱世坚
曾凤魁
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JIANXIN ENTERPRISE CO Ltd
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JIANXIN ENTERPRISE CO Ltd
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Priority to CN93106973A priority Critical patent/CN1096477A/en
Publication of CN1096477A publication Critical patent/CN1096477A/en
Pending legal-status Critical Current

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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
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/726—Measuring properties of mixture, e.g. temperature or density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/728—Measuring data of the driving system, e.g. torque, speed, power, vibration
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/9218—Weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92333—Raw material handling or dosing, e.g. active hopper or feeding device
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92371—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The method for mixing raw materials of a kind of polyvinyladehydes vinyl acetate (being commonly called as EVA) foamed shoe sole, mainly be to be respectively charged in the different differential weight type automatic feeding machines with producing the required various raw materials of EVA foamed shoe sole, according to default transfer rate, every raw material is transported in the twin screw extruder machine, processes such as heating and melting, conveying, kneading mixing and extrusion through twin screw extruder machine, after cooling, make granular EVA foamed shoe sole mixed material again.

Description

The method for mixing raw materials of EVA foamed shoe sole
The present invention relates to a kind of method for mixing raw materials of EVA foamed shoe sole, the mixed proportion that particularly relates to the every raw material of a kind of EVA of making foamed shoe sole keeps certain, and can always change the method for production.
Shoes have been the indispensable necessity of modern, and along with the prosperity of science and technology, shoes except appearance firm more attractive in appearance, the method of shoes moulding is also more and more easier fast, the method for mixing raw materials of picture foamed shoe sole, enter the epoch of automation, except reducing many operations manually, more increased the speed of producing.
The method for mixing raw materials of plastic of poly vinyl acetate in the past (being commonly called as EVA) foamed shoe sole, its manufacture process is as follows:
A. utilize and manually weigh every raw material;
B. raw material is sent in the closed pressurization mixer according to certain proportion;
C. then mixed raw material is sent into Luntai prolongs pressure;
The raw material that d. will prolong at last after the pressure cools off through cooling wheel.
Behind above-mentioned manufacturing process, get final product to such an extent that sheet is mixed semi-finished product; Again through thermal pressure stand bridge, cut open platform, cutting machine can get foamed shoe sole after cutting, and its manufacture process can be found following shortcoming:
1. it is in internal mixture mixed process, need just can disperse the good mixing semi-finished product through long-time (8～12 minutes/batches) and high temperature (110 ℃～140 ℃) mixing, in this process, cause the additive of non-refractory partly to decompose easily, and raw material stirs during because of kneading, easily at the mixing initial stage, unmixed powder raw material is completely blown out from the gap between weight and mixing channel, cause in the different batch of materials, the mixed proportion difference of various raw materials, and poor because of the cooling wheel cooling effect in prolonging pressure and cooling procedure, so can cause the additive of non-refractory partly to decompose.
2. above-mentioned EVA sole foaming method for mixing raw materials is to belong to producing in batches, as desires to make the whole production flow process smooth and easy, and the operating characteristics height of machinery needs to consume great amount of manpower;
3. when cuing open platform and blank, can produce a large amount of waste materials last.
The method for mixing raw materials of another kind of EVA foamed shoe sole in the past is as follows:
A. utilize and manually weigh every raw material;
B. raw material is sent in the closed pressurization mixer according to certain proportion;
C. mixed raw material is sent into to extrude in the tool and be molded into the strip mixed material.
Again the strip mixed material is cooled off through suitable, after can get granular mixed material after the pelleter pelletizing; Again with this granular mixed material in ejaculator is injected the mould of pressurized, heated, after in mould, building bridge, insert at last in the finishing die behind heating, cooling and shaping, can get the foamed shoe sole of tool special shape and decorative pattern.
Under above-mentioned EVA sole foaming method for mixing raw materials and first method compared, except it did not have the issuance of materials generation, all the other were to belong to producing in batches equally, need the more manpower of consumption; The ratio difference of batch when raw material mixes, and mixed process has the shortcoming existence that additive partly decomposes.
Main purpose of the present invention is the method for mixing raw materials that is to provide a kind of EVA foamed shoe sole, it is to utilize the differential weight type automatic feeding machine, the mixed proportion that can keep every original raw material, and with the airtight rapid mixing of twin screw extruder machine, the stability height of the good and raw material of mixed effect.
Secondary objective of the present invention is the method for mixing raw materials that is to provide the EVA foamed shoe sole, and it utilizes the differential weight type automatic feeding machine, and cooperates the airtight rapid mixing effect of twin screw extruder machine, constitutes a complete and continuous mode of production.
Feature of the present invention is to utilize the differential weight type automatic feeding machine, makes self-feeding also can control the ratio of every raw material, automatically raw material is sent into again and filled part kneading and mixing in the twin screw extruder machine, mixed process, the stability of every raw material is high, and the situation that does not have decomposition takes place.
Method for mixing raw materials according to a kind of EVA foamed shoe sole provided by the invention, it mainly is to produce the required various raw materials of EVA foamed shoe sole, as polyethylene vinyl acetate particles, filler, blowing agent, bridging agent and colorant etc., be respectively charged in the different differential weight type automatic feeding machines, the differential weight type automatic feeding machine has the weight sensing element, promptly weighing automatically once every the set time, and alleged weight passed to computer controller, automatically calculate its raw material output speed through computer controller, and with the raw material transfer rate of setting relatively, and according to the automatic rotating speed of adjusting variable-speed motor of the size of error, make according to default transfer rate, every raw material is transported in the twin screw extruder machine, again through the heating melting of twin screw extruder machine, carry, mediate processes such as mixing and extrusion, after cooling and stock-cutter cutting, make granular EVA foamed shoe sole mixed material again; In ejaculator is injected mixed material on the mould of pressurized, heated, make its foaming of building bridge again through appropriate time, get final product the highly stable foamed shoe sole of size; Whole manufacturing process links up and full automation, and material rate control is stable, mixed process, the extruder temperature of twin screw extruder machine is controlled between 85 ℃～140 ℃, the material that mixes the back extrusion is immediately through water cooling, can avoid the additive of non-refractory to decompose, so during mixed material forming, the dimensional stability height of foamed shoe sole.
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is the flow chart of the utility model method for mixing raw materials.
Fig. 2 is the weighing flow chart of the utility model embodiment differential weight type automatic feeding machine.
Fig. 3 is the part cutaway view of the utility model embodiment twin screw extruder machine.
Fig. 4 is the kneading action schematic diagram of the utility model embodiment twin-screw.
Fig. 5 is the temperature perception flow chart of the utility model embodiment twin screw extruder machine.
The method for mixing raw materials of a kind of EVA foamed shoe sole of the present invention sees also shown in Figure 2ly, and it mainly is that a differential weight type automatic feeding machine (10), a twin screw extruder machine (20), a cooling bath (30) and a stock-cutter (40) are arranged, and its manufacturing step is as follows:
A. will produce the required various raw materials of EVA foamed shoe sole, as polyethylene vinyl acetate particles, filler, blowing agent, bridging agent and colorant etc., be respectively charged in the different differential weight type automatic feeding machines (10), by every raw material of differential weight type automatic feeding machine (10) output equal proportion;
B. the raw material of differential weight type automatic feeding machine (10) output is sent into twin screw extruder machine (20), by heating melting, conveying and the kneading mixed-forming of twin screw extruder machine (20), and extrusion mixed material into strips;
C. then the strip mixed material of twin screw extruder machine (20) extrusion is sent into cooling in the cooling bath (30);
D. cooled mixed material is cut into granular raw material through stock-cutter (40).
The above-mentioned granular EVA foamed shoe sole mixed material of making is sent in the Jet forming machine, in ejaculator is injected mixed material on the mould of pressurized, heated, is made its foaming of building bridge through appropriate time, get final product the highly stable foamed shoe sole of size.
See also shown in Figure 2, the differential weight type automatic feeding machine is according to the mixed proportion of various raw materials, be provided with predetermined transfer rate, and the differential weight type automatic feeding machine has the weight sensing element, every the set time be automatic weighing once, and the weight that institute's scale gets passed to computer controller, automatically calculate its raw material output speed through computer controller, and with the raw material transfer rate of setting relatively, and according to the automatic rotating speed of adjusting variable-speed motor of the size of error, make according to default transfer rate, every raw material is exported simultaneously delivered in the twin screw extruder machine.
See also shown in Figure 3, twin screw extruder machine (20) inside is made up of the two parallel screw rods (21) that join, outside then covered by airtight housing (22), and two screw rods (21) is the multistage combination, in each section, can be divided into conveying (211), mediate and mix (212) and check element segment such as (213), hop count as for screw rod (21) can be done optimal combination according to the degree of scatter that requires, and each Duan Bingke separately controls temperature, respectively has independently electric heating heating plate (23) and cooling water valve (24); When raw material is delivered to twin screw extruder machine (20), because of it is an airtight mixing and kneading machine, so powder additive can not shed in mixing, and raw material holdup time in twin screw extruder machine (20) is short, has only 1～1.5 minute approximately, so can avoid the additive of non-refractory to decompose; Please consult shown in Figure 4 again, twin-screw (21) be rotate in the same way and the kneading hybrid element (212) of each section twin-screw (21) be by a plurality of be elliptoid turn the serial connection form, Bing Hang ellipse is turned and shell has suitable gap in twos, and raw materials mixed (50) is promptly constantly turned round along the rotation of turning in the gap, because of twin-screw has conveying (211) and moulds the original paper that ends (212), so constantly send in the twin-screw (21) always at raw material (50), also the raw material (50) in twin-screw (21) can be pushed forward always, so whole raw material (50) can fill in twin-screw and part mix and mix.
See also shown in Figure 5, each of twin screw extruder machine section screw rod is provided with a predetermined temperature value, and have a temperature sensor and a controller, and by each section of temperature sensor sensing extruder temperature value, again the temperature value that records is compared with setting value, two temperature gaps after relatively are by the Push And Release of controller control electric heating heating plate or cooling water valve, and the temperature that reaches screw rod remains on certain value, and general temperature is controlled between 85 ℃～140 ℃.
In sum, the method for mixing raw materials of a kind of EVA foamed shoe sole of the present invention, it utilizes the differential weight type automatic feeding, reach the pin-point accuracy of carrying every material quantity, make the amount of every raw material keep certain proportion, airtight with twin screw extruder machine again and kneading that fill part mixes, and makes raw material have the good and additive of stability and can not decompose, raw material is mixed, have for the quality of moulding foaming sole and pattern and very big benefit and improve; The fully consistent automation of whole flow process also is very helpful for the raising of operating efficiency, by finding out in the above-mentioned various advantages that the present invention has the value of practicality on the industry.

Claims (5)

1, a kind of method for mixing raw materials of EVA foamed shoe sole, it includes scale material, mixing, cooling and four steps of pelletizing, it is characterized in that:
Utilize differential weight type automatic feeding machine scale to go out to have a certain proportion of various raw material during its scale material.
2, according to the method for mixing raw materials of the EVA foamed shoe sole described in the claim 1, it is characterized in that: the differential weight type automatic feeding machine includes a motor, a controller, a weight sensor and a computer controller, regularly predict by the weight sensor and respectively to expect former output quantity, see through computer controller and convert output speed to, compare with setting value again, and comparative result is fed back to controller control motor speed, reach quantitative output.
3, a kind of method for mixing raw materials of EVA foamed shoe sole, it includes scale material, mixing, cooling and four steps of pelletizing, it is characterized in that:
It utilizes twin screw extruder machine when mixing, and is controlled under the predetermined extruder temperature (85 ℃～140 ℃) by temperature controller, with the various raw materials of input, through processes such as heating melting, conveying, kneading mixing, raw material is mixed the mixed material that extrudes into strips.
4, according to the method for mixing raw materials of the EVA sole described in the claim 3, it is characterized in that: twin screw extruder machine is to be multistage to be combined into, each section and by conveying member, check spare and mediate mixer element and formed.
5, according to the method for mixing raw materials of the EVA sole described in the claim 1,3, it is characterized in that: from a certain proportion of various raw materials of differential weight type automatic feeding machine output device, raw material is followed automatic transport and is gone in the twin screw extruder machine, raw material is mixed be pressed into strip, whole flow process one-stop operation is finished automatically.
CN93106973A 1993-06-16 1993-06-16 The method for mixing raw materials of EVA foamed shoe sole Pending CN1096477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN93106973A CN1096477A (en) 1993-06-16 1993-06-16 The method for mixing raw materials of EVA foamed shoe sole

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Application Number Priority Date Filing Date Title
CN93106973A CN1096477A (en) 1993-06-16 1993-06-16 The method for mixing raw materials of EVA foamed shoe sole

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CN1096477A true CN1096477A (en) 1994-12-21

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CN93106973A Pending CN1096477A (en) 1993-06-16 1993-06-16 The method for mixing raw materials of EVA foamed shoe sole

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102114398B (en) * 2009-12-31 2013-09-25 国恩工业股份有限公司 Plastic material dry-pressing pelletizing machine
CN104223840A (en) * 2013-06-06 2014-12-24 龚祖斌 EVA cushion core material for sofa cushion and preparation method thereof
CN114307842A (en) * 2016-04-22 2022-04-12 斯提尔生命印度私人有限公司 Method for granulating powders in a co-rotating twin-screw extruder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102114398B (en) * 2009-12-31 2013-09-25 国恩工业股份有限公司 Plastic material dry-pressing pelletizing machine
CN104223840A (en) * 2013-06-06 2014-12-24 龚祖斌 EVA cushion core material for sofa cushion and preparation method thereof
CN114307842A (en) * 2016-04-22 2022-04-12 斯提尔生命印度私人有限公司 Method for granulating powders in a co-rotating twin-screw extruder

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