WO2019220952A1 - 配合剤の混合方法及び混合装置 - Google Patents

配合剤の混合方法及び混合装置 Download PDF

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Publication number
WO2019220952A1
WO2019220952A1 PCT/JP2019/018258 JP2019018258W WO2019220952A1 WO 2019220952 A1 WO2019220952 A1 WO 2019220952A1 JP 2019018258 W JP2019018258 W JP 2019018258W WO 2019220952 A1 WO2019220952 A1 WO 2019220952A1
Authority
WO
WIPO (PCT)
Prior art keywords
compounding
rotating drum
bag body
bag
mixing
Prior art date
Application number
PCT/JP2019/018258
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
実 伏貫
Original Assignee
Nok株式会社
Ｎｏｋエラストマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok株式会社, Ｎｏｋエラストマー株式会社 filed Critical Nok株式会社
Priority to CN201980028861.1A priority Critical patent/CN112041139B/zh
Priority to JP2020519572A priority patent/JP7080312B2/ja
Publication of WO2019220952A1 publication Critical patent/WO2019220952A1/ja
Priority to JP2022001959A priority patent/JP7212803B2/ja

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Classifications

    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary

Definitions

  • the present invention relates to a blending method and a blending device for blending a plurality of kinds of blending agents.
  • compounding agents such as fillers and additives are blended with raw material rubber at a predetermined blending ratio in order to provide necessary physical properties and functions.
  • the blending operation is performed using a kneader such as a kneader or a roll.
  • a plurality of types of compounding agents are blended in the raw rubber at a predetermined blending ratio (see, for example, Patent Document 1).
  • a compounding agent is mix
  • Step 1) A plurality of kinds of compounding agents are weighed, and an amount of the compounding agent according to the compounding ratio is sorted for each type. The various types of compounding agents are once put into a work box with the top surface opened.
  • step 1 since plural kinds of compounding agents are weighed for each type and sequentially put into the box, the plural kinds of compounding agents are hardly mixed in the box.
  • step 2 above a plurality of types of compounding agents are charged into the kneader in a state where they are hardly mixed.
  • a dispersion failure occurs such that the compounding agent is not mixed uniformly in the kneader, and the phenomenon that the necessary physical properties and functions cannot be obtained due to this dispersion failure occurs.
  • Such a phenomenon is particularly likely to occur in raw rubber with poor dispersibility such as fluorine-based rubber.
  • An object of the present invention is to allow a plurality of types of compounding agents to be uniformly dispersed in the raw rubber prior to compounding a plurality of types of compounding agents into the raw rubber at a predetermined mixing ratio.
  • the mixing method of the compounding agent of the present invention encloses the plurality of compounding agents in an amount in accordance with the compounding ratio in a bag before compounding a plurality of compounding agents in the raw rubber at a predetermined compounding ratio,
  • the bag body in which the plural kinds of compounding agents are enclosed is put into the rotating drum of the mixing device that rotationally drives the rotating drum, and the bag body is rolled in the rotating drum by driving the rotating drum to rotate.
  • the plural kinds of compounding agents enclosed in the bag are mixed with each other.
  • the mixing device of the compounding agent of the present invention accepts a bag body that encloses the plurality of compounding agents in an amount corresponding to the compounding ratio before compounding a plurality of compounding agents in the raw rubber at a predetermined compounding ratio.
  • a rotating drum a support portion that rotatably supports the rotating drum with the axial direction being transverse, and a drive portion that rotationally drives the rotating drum, and follows the inner peripheral surface of the rotating drum that rotates.
  • the bag body is rolled by repeating the removal from the inner peripheral surface.
  • the present invention it is possible to uniformly disperse a plurality of types of compounding ingredients in the raw rubber before blending a plurality of types of compounding ingredients in the raw rubber at a predetermined compounding ratio.
  • (A) which shows one Embodiment of the mixing apparatus of a compounding agent is a front view
  • the mixing method of the compounding agent of the present embodiment is performed before blending a plurality of types of compounding agents blended into the raw rubber at a predetermined blending ratio into the raw rubber.
  • this mixing method plural kinds of compounding agents are mixed with each other by the following procedure.
  • a combination of fillers such as white carbon (silica) and black carbon
  • a combination of fillers and additives a combination of plural additives, and the like
  • various compounding agents such as fillers and additives generally used in the rubber industry, for example, fillers such as black carbon, white carbon (silica), talc, clay, graphite, calcium silicate, stearic acid
  • processing aids such as palmitic acid and paraffin wax, acid acceptors such as zinc oxide and magnesium oxide, antiaging agents, plasticizers and the like are used in appropriate combination.
  • the mixing method of the compounding agent of this Embodiment is performed by each following process.
  • a bag body having a capacity capable of accommodating a plurality of kinds of compounding agents in an amount according to the compounding ratio is prepared.
  • a plurality of kinds of compounding agents in an amount corresponding to the blending ratio are sequentially stored, and the opening of the bag body is closed.
  • the bag body is a flexible bag body made of a thin film resin, for example, and may be a commercially available so-called plastic bag. Since a plurality of kinds of compounding agents are mixed in the bag, it is desirable that the capacity of the bag body is set so as to allow a sufficient amount of the compounding agent so that the compounding agent can move in the bag.
  • the weighing of the compounding agent may be performed in advance before the compounding agent is accommodated in the bag, or may be performed while the bag is placed on a weighing machine (not shown) and the compounding agent is accommodated in the bag.
  • a bag body When carrying out the weight reduction of a compounding agent, storing a compounding agent in a bag body, a bag body is first mounted on a measuring machine and several types of compounding agents are sequentially accommodated in the bag body mounted on the measuring machine. At this time, the weight is reduced by a weighing machine each time each type of compounding agent is put into the bag. By this measurement, it is possible to know the weight of each type of compounding agent placed in the bag. More specifically, the weight of the compounding agent to be put in the bag body can be known as a difference from the weight of the compounding agent previously stored in the bag body. Therefore, each type of compounding agent can be sealed in the bag body at a compounding ratio converted to weight while putting each type of compounding agent in the bag.
  • a plurality of kinds of compounding agents enclosed in the bag can be sufficiently mixed, and poor dispersion occurs when the compounding agent is compounded into the raw rubber.
  • the operator only needs to perform the operation of instructing the weighing of the compounding agent and the enclosing in the bag body, the insertion of the bag body into the rotating drum, and the driving of the rotating drum, thereby reducing the burden on the operator. be able to.
  • the operation time of the rotating drum is generally about 1 to 5 minutes although it depends on the amount of the compounding agent.
  • the mixing device of the present embodiment is configured as follows.
  • This mixing apparatus is an apparatus for mixing a plurality of types of compounding agents with each other before compounding the raw material rubber, and is not an apparatus (kneading device) for compounding the compounding agent with the raw material rubber.
  • the mixing device 1 includes a frame-shaped pedestal 2, a pair of left and right drive rolls 3 disposed on the pedestal 2, and a driven roll 3 that is driven and rotated on the drive roll 3.
  • a rotating drum 4 that rotates, an electric drive source (not shown) for rotating the drive roll 3, and an operation unit 5.
  • the pair of left and right drive rolls 3 are rotatable rollers and play a role as a support portion for mounting and supporting the rotary drum 4. These driving rolls 3 are arranged in parallel to each other, and the rotating drum 4 is placed with the axial directions thereof aligned. At this time, the rotary drum 4 is merely placed on the pair of drive rolls 3 and is not restrained in position by another structure.
  • the mixing apparatus 1 includes a motor M as a drive source for rotationally driving the pair of drive rolls 3.
  • the mixing device 1 includes a transmission mechanism (not shown) that transmits the rotation of a rotation shaft (not shown) of the motor M to the drive roll 3.
  • the transmission mechanism may be configured to transmit the rotation of the motor M only to one drive roll 3 or may be configured to transmit to both drive rolls 3.
  • the mixing apparatus 1 includes a control unit 11.
  • the motor M is connected to the control unit 11 via the motor drive circuit 12.
  • the operation unit 5 is also connected to the control unit 11 via the input / output circuit 13.
  • the control unit 11 is an integrated circuit that sequentially executes logic for receiving an input signal from the operation unit 5 and outputting a drive control signal for the motor M.
  • the control unit 11 that has received an input signal from the operation unit 5 via the input / output circuit 13 outputs a drive signal for the motor M.
  • the motor drive circuit 12 closes an energization circuit (not shown) connected to the motor M in accordance with the drive signal received from the control unit 11.
  • the motor M and the motor drive circuit 12 function as a drive unit that rotationally drives the rotary drum 4.
  • the logic of the control unit 11 is set to repeat forward and reverse rotation of the motor M. That is, the logic repeats a driving signal for rotating the motor M in one direction and a driving signal for rotating the motor M in the opposite direction in a predetermined cycle.
  • the control unit 11 causes the drive roll 3 and the rotating drum 4 driven thereby to rotate forward (arrow x) at a predetermined rotational speed, and then reversely rotate (arrow y) at a predetermined rotational speed.
  • the motor M is controlled to repeat this at a predetermined cycle.
  • the predetermined rotation speed is, for example, 75 rpm.
  • the pair of left and right drive rolls 3 has a rotation center axis (not shown) such that one roll end (axial end) 3a is positioned higher than the other roll end (axial end) 3b. ) Is set at an angle.
  • the inclination angle of the rotation center axis is, for example, about 15 degrees.
  • the rotary drum 4 placed on the drive roll 3 also has one drum end (axial end) 4a and the other drum end (axial end).
  • the rotation center axis 4c is set so as to face an oblique direction so as to be positioned higher than 4b.
  • the inclination angle of the rotation center axis 4 c is, for example, about 15 degrees that coincides with the rotation center axis of the pair of drive rolls 3.
  • the rotating drum 4 is open on the drum end 4a side and closed on the drum end 4b side.
  • a drum opening 4d is provided at the drum end 4a that opens.
  • the outer peripheral surface of the rotating drum 4 is a cylindrical peripheral surface portion 4 e that contacts the drive roll 3.
  • a bottom surface portion 4f is provided on the other drum end portion 4b that is closed.
  • the drive roll 3 is covered with, for example, a rubber-like elastic body.
  • the entire rotating drum 4 is made of metal.
  • the rubber-like elastic body forming the outer peripheral surface of the drive roll 3 generates a frictional resistance with the outer peripheral surface of the metallic rotating drum 4 and transmits the rotation of the driving roll 3 to the rotating drum 4 without causing slippage. .
  • the rotating drum 4 having such a configuration is placed on the pair of drive rolls 3 so that the drum end 4a is positioned higher than the drum end 4b. This facilitates taking in and out of the bag body from the drum opening 4d. At this time, since the drum end 4a is positioned higher than the drum end 4b, there is no possibility that the bag body will spill out of the drum opening 4d. It has a structure.
  • the opening / closing lid is not necessarily provided, and as another embodiment, an opening / closing lid may be provided.
  • Two engaging portions 4g are provided on the inner peripheral surface of the rotating drum 4, that is, the inner peripheral surface of the peripheral surface portion 4e. These engaging portions 4g have a rod-like shape, and are arranged along the axial direction of the rotating drum 4 in a state of being in contact with the inner peripheral surface of the peripheral surface portion 4e. When viewed from the inner peripheral surface of the peripheral surface portion 4e, the engaging portion 4g has a protruding shape. Such an engaging portion 4g plays a role of facilitating rolling of the bag body by the bag body being caught while the rotary drum 4 is rotating. This point will be described in detail later.
  • the engaging portion 4 g of the present embodiment is two linear ridges that are equally spaced and extend along the rotation center axis 4 c of the rotating drum 4.
  • the height of the engaging portion 4g, that is, the projecting dimension from the inner peripheral surface of the rotating drum 4 is, for example, about 10 mm.
  • the engaging portion 4g may be any member that plays a role of assisting the rolling of the bag body by the bag body being caught while the rotary drum 4 is rotating.
  • Various forms of the engaging portion 4g are allowed for the shape, the number of installed portions, and the arrangement position. As long as this condition is satisfied, the shape and the number of the engaging portions 4g are not particularly limited.
  • the number of installations may be 2 to 6, for example.
  • the engaging portion 4g may be arranged in a non-contact state with respect to the inner peripheral surface of the rotating drum 4.
  • the control unit 11 outputs a drive signal for driving the motor M in response to an input instruction from the operation unit 5.
  • the rotation shaft of the motor M rotates, the drive roll 3 is driven to rotate, and the rotary drum 4 rotates following the rotation of the drive roll 3.
  • the bag body in which a plurality of kinds of compounding agents stored in the rotating drum 4 is entrained rotates following the inner peripheral surface of the rotating drum 4. At this time, the bag body is caught by the engaging portion 4g, and slipping between the inner peripheral surface of the rotating drum 4 and the bag body is suppressed.
  • the control unit 11 outputs a drive signal so as to switch the rotation direction of the motor M at a predetermined cycle.
  • the rotating drum 4 repeats forward rotation (arrow x) and reverse rotation (arrow y), and a bag body in which a plurality of types of compounding agents are enclosed. Repeats forward and reverse rotation. As a result, a plurality of kinds of compounding agents can be mixed more sufficiently in the rolling bag.
  • a relatively small bag body is used with respect to the inner diameter of the rotating drum 4, and a plurality of kinds of compounding agents are accommodated in the bag body.
  • the bag body follows the rotating drum 4 by being caught by the engaging portion 4g and is carried upward.
  • the bag body carried upward falls by dropping from the engaging portion 4g.
  • Plural kinds of compounding agents accommodated in the bag are mixed by the rising and falling of the bag.
  • the rotation angle of the rotary drum 4 at which the bag body falls depends on the state of the bag body being caught by the engaging portion 4g. If the engaging portion 4g is relatively large with respect to the bag body, the bag body is less likely to drop off from the engaging portion 4g, and if the engaging portion 4g is relatively small with respect to the bag body, the bag body is not engaging with the engaging portion 4g. It becomes easy to drop off. The ease of dropping off the bag body also depends on the shape of the engaging portion 4g. If the engaging portion 4g has a shape such as a hook or nail, the bag body is unlikely to fall off the engaging portion 4g.
  • the mixing method and the mixing device of the compounding agent of the present embodiment rotate the rotating drum 4 with the axial direction being transverse and, more precisely, the rotation center axis 4c is inclined with respect to the horizontal.
  • the bag body is rolled by following the inner peripheral surface of the rotating drum 4 that rotates.
  • the follow-up in this case does not mean to follow the rotating drum 4 by 360 degrees, but means follow-up of an angle range from dropping from the engaging portion 4g to dropping.
  • a bag having a size close to the inner peripheral surface of the rotating drum 4 may be used. If the bag body is larger as it comes closer to the inner peripheral surface of the rotating drum 4, the frictional resistance of the bag body with respect to the inner peripheral surface of the rotating drum 4 increases, so that the bag body follows the rotating drum 4 without slipping. At this time, the bag body follows the rotating drum 4 by 360 degrees. Plural kinds of compounding agents accommodated in the bag are mixed by rotation of the bag.
  • the mechanism in which the bag body rolls in the rotating drum 4 following the rotation of the rotating drum 4 and the manner in which the bag rolls are related to the size relationship between the inner diameter of the rotating drum 4 and the bag body, and the frictional resistance. It varies depending on the relationship, etc., and is not uniform.
  • the rolling of the bag means the rotation of the bag.
  • a plurality of types of compounding agents contained in the bag are mixed by the rotation of the bag.
  • the mixing device 1 by mixing the compounding agent using the mixing device 1, it is possible to sufficiently mix a plurality of types of compounding agents enclosed in the bag body, and thus mixing the compounding agent into the raw rubber. It is possible to eliminate the occurrence of poor dispersion when blended. Since plural kinds of compounding agents are mixed by the rotation of the rotating drum 4, the burden on the operator can be reduced.
  • the rotation center axis 4c of the rotary drum 4 may be directed vertically, for example, in the vertical direction, instead of horizontally.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Accessories For Mixers (AREA)
PCT/JP2019/018258 2018-05-17 2019-05-07 配合剤の混合方法及び混合装置 WO2019220952A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980028861.1A CN112041139B (zh) 2018-05-17 2019-05-07 配合剂的混合方法和混合装置
JP2020519572A JP7080312B2 (ja) 2018-05-17 2019-05-07 配合剤の混合方法
JP2022001959A JP7212803B2 (ja) 2018-05-17 2022-01-07 配合剤の混合方法及び混合装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018095526 2018-05-17
JP2018-095526 2018-05-17

Publications (1)

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WO2019220952A1 true WO2019220952A1 (ja) 2019-11-21

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PCT/JP2019/018258 WO2019220952A1 (ja) 2018-05-17 2019-05-07 配合剤の混合方法及び混合装置

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JP (2) JP7080312B2 (enrdf_load_stackoverflow)
CN (1) CN112041139B (enrdf_load_stackoverflow)
WO (1) WO2019220952A1 (enrdf_load_stackoverflow)

Cited By (1)

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CN116426047A (zh) * 2023-04-20 2023-07-14 浙江百朗士新材料有限公司 一种耐低温nbr的配方、工艺及其设备

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CN115212793B (zh) * 2022-08-11 2023-05-26 江苏蔷薇实业集团有限公司 一种具有预定量结构的硅酸钠原料输送装置

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Also Published As

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CN112041139A (zh) 2020-12-04
JP7212803B2 (ja) 2023-01-25
JP7080312B2 (ja) 2022-06-03
JP2022058544A (ja) 2022-04-12
JPWO2019220952A1 (ja) 2021-05-13
CN112041139B (zh) 2022-12-30

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