Automatic feed system for Anti-adhesive agent for unvulcanized rubber

Abstract

To make it possible to not only suppress an operator's effort and labor cost, but also to control density range in a stock tank within a proper range and to promote smart factory by automating anti-adhesive liquid concentration control in a dip tank.SOLUTION: An automatic feed system for anti-adhesive agent for unvulcanized rubber comprises an anti-adhesive liquid manufacturing device, an anti-adhesive liquid processor, and a control device, and prepares an anti-adhesive agent at a set concentration and automatically feeds the same into a dip tank. The system has a tank, a pump or a feeder which feeds the anti-adhesive agent for unvulcanized rubber, and comprises another tank for diluting the agent and preparing an anti-adhesive liquid, and a pump for feeding the anti-adhesive liquid into the dip tank.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an automatic anti-adhesive agent supplying system for unvulcanized rubber. [Background technology]

[0002] The process of using conventional anti-adhesive agents for unvulcanized rubber is as follows. First, workers disperse and dissolve the powder or liquid anti-adhesive agent in water in an independent dissolving facility called a dissolving tank, and then the agent is transferred to a stock tank connected to a dip tank (also called a dip tank or immersion tank) where the anti-adhesive agent is treated with the unvulcanized rubber. In the dip tank connected to the stock tank, the anti-adhesive treatment of the unvulcanized rubber is carried out. At this time, the unvulcanized rubber, which has a temperature of 100°C to 150°C, enters the dip tank, causing evaporation and concentration over time. Workers monitor the concentration and the amount of anti-adhesive liquid to prevent large changes, and add anti-adhesive agent to the dissolving tank as necessary to create and supply the anti-adhesive liquid. This method of concentration management by workers not only requires a lot of labor and labor costs, but also causes concentration fluctuations due to individual differences, resulting in increased running costs for using the anti-adhesive agent. Also, the higher the performance of the anti-adhesive agent, the more severe the effect of concentration changes, and problems such as insufficient adhesion prevention at low concentrations and an increase in tire foreign matter due to insufficient drying and excessive adhesion of the anti-adhesive agent at high concentrations are likely to occur. Problems are particularly likely to occur in the high concentration range, so concentration control is very important. Therefore, by automating the supply of anti-adhesive liquid to the dip tank, it is necessary not only to reduce worker labor and labor costs, but also to control concentration changes in the stock tank within an appropriate range and promote the creation of a smart factory. Patent Document 1 discloses an apparatus that automatically supplies high-concentration paste and water to a mixing tank while controlling the concentration. Patent Document 2 refers to concentration management in a dip tank. The specification states that "there are several types of sensor technologies that may be used by the device, including, but not limited to, total dissolved solids, ultrasonic attenuation, pH, turbidity, and conductivity," and provides examples of several concentration measurement methods. Patent Document 3 illustrates an automatic supply device equipped with a control device that mixes a plurality of fluids using a plurality of assemblies. Patent Document 4 illustrates an example of a constant-volume supply device for mixing a solid anti-adhesive agent for unvulcanized rubber with water. Patent Document 5 describes a method for automating the concentration management of the anti-adhesive solution in the dip tank, which not only reduces the labor and labor costs of workers but also controls the concentration change in the stock tank to an appropriate range. The report gives examples of equipment that can automatically supply anti-deposition liquid, which enables the development of smart factories. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 5,288,145 [Patent Document 2] US Patent Publication No. 2016 / 0103453 [Patent Document 3] US Patent Publication No. 2022 / 0347639 [Patent Document 4] International Publication No. 2019 / 050027 [Patent Document 5] JP 2020-054977 A Summary of the Invention [Problem to be solved by the invention]

[0004] As a result of careful investigation, the inventors have found that automating the supply of anti-adhesive liquid to the dip tank not only reduces the labor and labor costs of workers, but also makes it possible to control the concentration change in the stock tank within an appropriate range and promote the creation of a smart factory. [Means for solving the problem]

[0005] The present invention has the following aspects. [1] An automatic anti-adhesion agent supply system for unvulcanized rubber comprising an anti-adhesion liquid manufacturing device, an anti-adhesion treatment device, and a control device. [2] The automatic supply system for anti-adhesive agent for unvulcanized rubber according to [1] above, which prepares an anti-adhesive liquid at a set concentration and automatically sends it to a dipping tank. [3] An automatic supply system for anti-adhesive agent for unvulcanized rubber according to [1] above, characterized in that it comprises a tank for supplying the anti-adhesive agent for unvulcanized rubber, a pump or a feeder, another tank for diluting the agent to prepare an anti-adhesive liquid, and a pump for sending the anti-adhesive liquid to a dip tank. [4] The automatic supply system for anti-adhesive agent for unvulcanized rubber according to [1] above, which is controlled by a program. [5] The automatic anti-adhesive agent supply system for unvulcanized rubber described in [1] above, which controls the concentration in the dip tank using a conductivity sensor and a programming computer and supplies new anti-adhesive liquid to the dip tank. [6] The automatic supply system for anti-adhesive agent for unvulcanized rubber according to the above [1], which uses an anti-adhesive agent for unvulcanized rubber containing, as a main component, one or more components selected from water-soluble polymers and smectite. [7] The automatic supply system for an anti-adhesive agent for unvulcanized rubber according to the above [1], wherein water having a hardness of 0 to 1000 mg / L is used for dispersing the anti-adhesive agent. Effect of the Invention

[0006] According to the present invention, by automating the supply of anti-adhesion liquid to the dip tank, not only can the labor and labor costs of workers be reduced, but also it is possible to control the concentration change in the stock tank within an appropriate range and promote the creation of a smart factory. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram showing an embodiment of an automatic supply system for an adhesion inhibitor for unvulcanized rubber. [Diagram 2] FIG. 1 is a schematic diagram showing an embodiment of an automatic supply system for an adhesion inhibitor for unvulcanized rubber. [Diagram 3] FIG. 1 is a schematic diagram showing an embodiment of an automatic supply system for an adhesion inhibitor for unvulcanized rubber. [Figure 4] FIG. 1 is a schematic diagram showing an embodiment of an automatic supply system for an adhesion inhibitor for unvulcanized rubber. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described in detail. <Anti-adhesive agent for unvulcanized rubber> The adhesion-preventive liquid used in the present invention is prepared by mixing an adhesion-preventive agent for unvulcanized rubber (hereinafter, also simply referred to as an adhesion-preventive agent) and water in a predetermined ratio. The anti-adhesion agent that can be used in the present invention can be used without particular limitation as long as it can exhibit an anti-adhesion function. For example, the anti-adhesion agents described in JP-A-50-061467, JP-A-2014-152200, JP-A-2013-213202, JP-A-2015-105291, WO 2017 / 164171, WO 2018 / 030395, WO 2024 / 214398, JP-A-2023-75023, JP-A-2021-185218, JP-A-2024-35066, JP-A-2023-95689, and JP-A-2020-158622 can be mentioned.

[0009] The formulation may be in any form, such as powder, granules, pellets, liquid, or paste, and may be used by dispersing or dissolving in water. The content of the anti-adhesive agent relative to the total mass of the anti-adhesive liquid is not particularly limited, but is, for example, 0.1 to 20 mass %, and preferably 1 to 7 mass %. The anti-adhesive liquid is used for the anti-adhesive treatment of unvulcanized rubber. That is, the anti-adhesive agent is used in the manufacturing method of anti-adhesive treated unvulcanized rubber. A method for producing anti-adhesion treated unvulcanized rubber using an anti-adhesion agent includes the steps of adhering an anti-adhesion liquid to the surface of unvulcanized rubber, volatilizing the solvent, and adhering the anti-adhesion agent to the surface of the unvulcanized rubber to perform the anti-adhesion treatment.

[0010] The anti-adhesive treated unvulcanized rubber thus produced can be prevented from adhering to each other and becoming unable to peel off even when stored in a pile or folded state. The type of rubber to which the anti-adhesive agent for unvulcanized rubber can be applied is not particularly limited, and may be any unvulcanized rubber. Examples of the rubber type include natural rubber (NR), butadiene rubber (BR), styrene butadiene rubber (SBR), IIR (butyl rubber), EPDM (ethylene propylene rubber), and the like, and a mixture of two or more of these rubbers.

[0011] <Automatic supply system for anti-adhesive agent for unvulcanized rubber> The automatic supply system for an anti-adhesive agent for unvulcanized rubber of the present invention is not particularly limited, but may be, for example, one of the first to fourth embodiments described below. [Figure 1: First embodiment] FIG. 1 is a schematic diagram showing a first embodiment of an automatic supply system for an adhesion inhibitor for unvulcanized rubber according to the present invention. The automatic supply system of this embodiment includes an anti-deposition liquid producing device 1, an anti-deposition treatment device 2, and a control device 3. The control device 3 includes a programming computer in which data of each condition is input in advance into a database. The adhesion-preventing liquid manufacturing apparatus 1 includes a container 11 for storing an adhesion-preventing agent A, and a pump 21 and a pipe 31 for supplying the adhesion-preventing agent from the container 11 to a dissolution tank 51 . Similarly, a container 12 for storing the adhesion inhibitor B, and a pump 22 and a pipe 32 for supplying the adhesion inhibitor from the container 12 to the dissolution tank 51 are provided. Similarly, a container 13 for storing the adhesion inhibitor C, and a pump 23 and a pipe 33 for supplying the adhesion inhibitor from the container 13 to the dissolution tank 51 are provided. The containers 11 to 13 and the pumps and piping connected thereto may be one set or two or more sets, and FIG. 1 shows an example in which three sets are provided. The container is not particularly limited, and general-purpose packaging means such as an IBC container or a FIBC container can be used.

[0012] The adhesion-preventive agents A to C are supplied by pumps 21 to 23 through pipes 31 to 33, respectively, and supplied to a dissolution tank 51 through a solenoid valve 41. The pumps 21 to 23 and the solenoid valve 41 are connected to a control device 3 and can be controlled. A water source 81 is connected to the dissolution tank 51, and water can be supplied to the dissolution tank 51 via piping 82 and pump 25. Water can be controlled by the solenoid valve 42 connected to the control device 3 along the way. When an instruction to prepare an anti-adhesive liquid is received from an operator, or when it is determined that an anti-adhesive liquid should be prepared based on data managed by a programming computer based on past performance, an appropriate anti-adhesive liquid is prepared based on an instruction from the control device 3 (anti-adhesive agents A, B, C, ... are mixed in any ratio, or one arbitrary anti-adhesive agent is selected and supplied). It is fine if the anti-adhesive agents A to C are in liquid form that can be pumped, but if they are in powder, granular, pellet, or other form, they cannot be pumped, so a dissolving tank is required between the container and the pump. A predetermined anti-adhesive liquid is appropriately prepared from the amounts of anti-adhesive agents A to C and the amount of water supplied to the dissolution tank 51 so that the composition and concentration of the anti-adhesive liquid are instructed by the control device 3, and the anti-adhesive liquid is sequentially sent to the stock tank 53 by the piping 34 connected to the stock tank 53 and the pump 24. The pump 24 can also be controlled by the control device 3.

[0013] In the stock tank 53, an operator visually checks whether the sensor detects the amount of the anti-adhesive liquid, and when the amount falls below a certain level, the operator feeds back the information to the control device 3, making it possible to control the amount. In that case, preparation of new anti-adhesive liquid and / or sending of the anti-adhesive liquid in the dissolving tank 51 to the stock tank 53 is performed or carried out. The adhesion-preventing liquid is sent from the stock tank 53 via a pipe 37 and a pump 25 to an adhesion-preventing treatment device 2 equipped with a dip tank 91, and the unvulcanized rubber sheet is treated with the adhesion-preventing liquid. The method of the anti-adhesion treatment for the unvulcanized rubber sheet in the anti-adhesion treatment device 2 is not particularly limited, but an anti-adhesion treatment using a general immersion tank or a spray device (or both) is used. The anti-adhesion liquid used in the dip tank 91 is circulated and collected in the stock tank 53 through the pipe 38.

[0014] [Anti-adhesion agent] The anti-adhesive agent for unvulcanized rubber that can be used in the automatic supply system for an anti-adhesive agent for unvulcanized rubber of the present invention is not particularly limited, but preferably contains water-soluble polymers such as polyvinyl alcohol, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, polyacrylic acid, etc.; clay minerals such as smectite, montmorillonite, bentonite, clay, etc.; alkali metal salts of fatty acids having 8 to 22 carbon atoms such as potassium coconut fatty acid, sodium coconut fatty acid, potassium palm kernel fatty acid, sodium palm kernel fatty acid, potassium stearate, sodium stearate, etc.; fatty acid metal soaps having 8 to 22 carbon atoms such as calcium stearate, zinc stearate, magnesium stearate, etc., and among these, more preferably contains water-soluble polymers or bentonite in terms of adhesion prevention.

[0015] The composition of the adhesion inhibitor for unvulcanized rubber used in the automatic supply system for an adhesion inhibitor for unvulcanized rubber of the present invention may be, for example, Examples 1 to 3 of JP-A-50-061467, Examples 1 to 3 of JP-A-2014-152200, Examples 1 to 18 of JP-A-2013-213202, Examples 1-1 to 1-7 of JP-A-2015-105291, Examples 1 to 19 of WO-A-2017 / 164171, and Examples 2 to 30 of WO-A-2018 / 04416. Examples 1 to 15 of WO 2024 / 214398, Examples 1 to 35 of JP 2023-75023 A, Examples 1 to 24 of JP 2021-185218 A, Examples 1 to 33 of JP 2024-35066 A, Examples 1 to 16 of JP 2023-95689 A, and Examples 1 to 37 of JP 2020-158622 A. Examples of the composition described in each of the above are included.

[0016] Examples of commercially available anti-adhesive agents for unvulcanized rubber that can be used in the automatic supply system for an anti-adhesive agent for unvulcanized rubber of the present invention include "GY-243," "GY-1100," "New Mold SD-1," "GY-3660," "GY-935D," and "GY-951" (all trade names) manufactured by Lion Specialty Chemicals Co., Ltd.

[0017] [water] The water used in the automatic supply system for anti-adhesive agents for unvulcanized rubber of the present invention is not particularly limited and may be ion-exchanged water, tap water, well water, industrial water, city water, river water, seawater, etc., but in the case of seawater or water with high hardness, it is preferable to reduce the water hardness to an appropriate level using an ion exchanger or a water softener such as sodium carbonate. The water hardness is 0 to 500 mg / L (American hardness: calcium carbonate equivalent), preferably 0 to 300 mg / L, and more preferably 0 to 150 mg / L. When the water hardness is higher than 500 mg / L, it tends to be difficult to control the viscosity within an appropriate range with an anti-adhesive agent that uses smectite. With an anti-adhesive agent that uses a water-soluble polymer, the dispersion state tends to deteriorate, which tends to adversely affect the anti-adhesive properties.

[0018] [Sensor (concentration sensor)] As a method for measuring the concentration of the anti-adhesive liquid using a sensor such as a conductivity sensor and utilizing it for feedback, etc., the method described in JP 2020-54977 A can be used. Among them, a "conductivity sensor" or the like is preferable because it is "easy to install and easy to measure the concentration."

[0019] [Temperature conditions] The temperature condition of the automatic supply system of the anti-adhesive agent for unvulcanized rubber of the present invention is 10 to 80° C., preferably 20 to 60° C. If the temperature is higher than 80° C., the dispersion state of the hydrophobic component that is optionally mixed tends to deteriorate and a large amount of bubbles (scum) that do not disappear easily tends to be generated. If the temperature is lower than 10° C., the thickening effect of the anti-adhesive agent that uses smectite or a water-soluble polymer tends to be reduced, which adversely affects the anti-adhesive properties.

[0020] [viscosity] The viscosity of the adhesion-preventive liquid used in the automatic supply system of an adhesion-preventive agent for unvulcanized rubber of the present invention is 100 mPa·s to 20,000 mPa·s, preferably 200 mPa·s to 15,000 mPa·s, and more preferably 200 mPa·s to 10,000 mPa·s. If the viscosity is less than 100 mPa·s, the filler component of the liquid adhesion-preventive agent will be prone to settling and will no longer be in a uniform state, and if the viscosity is more than 20,000 mPa·s, the fluidity will be poor, although this will depend on the pump capacity and piping diameter, and this may hinder automatic supply.

[0021] If a water-soluble polymer or smectite is used in the anti-adhesive liquid used in the automatic anti-adhesive agent supply system for unvulcanized rubber of the present invention, the anti-adhesive agent will form a strong coating when applied to the rubber surface, thereby exhibiting good anti-adhesive properties. However, since both components incorporate water into their structures, they are prone to forming undissolved matter (mamako) and their solubility is easily reduced. For this reason, in an automatic supply device that automatically supplies an anti-adhesive agent dispersion to a stock tank or a dipping tank at an optimal timing, when preparing an anti-adhesive agent dispersion from an anti-adhesive agent containing both raw materials, it is important to set the concentration uniformly by concentration control, and it is preferable to use an automatic supply device for an anti-adhesive agent that uses both raw materials.

[0022] In addition, in Figure 1, dotted or dashed arrows extending from control device 3 to a pump or solenoid valve indicate that command and control are possible from control device 3, and dashed arrows extending from stock tank 53 to control device 3 indicate that feedback is possible by a sensor (the same applies to Figures 2 to 4, and control is not limited to these).

[0023] [Figure 2: Second embodiment] FIG. 2 is a schematic diagram showing a second embodiment of the automatic supply system for an adhesion inhibitor for unvulcanized rubber according to the present invention. The automatic supply system of this embodiment includes an anti-deposition liquid producing device 1, an anti-deposition treatment device 2, and a control device 3. The control device 3 includes a programming computer in which data of each condition is input in advance into a database. The adhesion-preventing liquid manufacturing apparatus 1 includes a container 11 for storing an adhesion-preventing agent A, and a pump 21 and a pipe 31 for supplying the adhesion-preventing agent from the container 11 to a dissolution tank 51 . Similarly, a container 12 for storing the adhesion inhibitor B, and a pump 22 and a pipe 32 for supplying the adhesion inhibitor from the container 12 to the dissolution tank 51 are provided. Similarly, a container 13 for storing the adhesion inhibitor C, and a pump 23 and a pipe 33 for supplying the adhesion inhibitor from the container 13 to the dissolution tank 51 are provided. The containers 11 to 13 and the pumps and piping connected thereto may be one set or two or more sets. FIG. 2 shows an example in which three sets are provided.

[0024] The adhesion-preventive agents A to C are supplied by pumps 21 to 23 through pipes 31 to 33, respectively, and supplied to a dissolution tank 51 through a solenoid valve 41. The pumps 21 to 23 and the solenoid valve 41 are connected to a control device 3 and can be controlled. The water source 81 can supply water to the pipes 31 to 33 via the pipe 82 and the pump 25, and is controllable since it is provided with the solenoid valve 42 connected to the control device 3. When an instruction to prepare an anti-adhesive liquid is received from the operator, or when it is determined that an anti-adhesive liquid should be prepared based on data managed by a programming computer based on past performance, an appropriate anti-adhesive liquid is prepared based on an instruction from the control device 3 (anti-adhesive agents A, B, C, etc. are diluted with water and then mixed in any ratio, or one arbitrary anti-adhesive agent is selected and supplied). It is fine if the anti-adhesive agents A to C are in liquid form that can be pumped, but if they are powders, they cannot be pumped, so a dissolving tank is required between the container and the pump. A predetermined anti-adhesive liquid is prepared appropriately from the amounts of anti-adhesive agents A to C diluted with water supplied to the dissolution tank 51 so that the anti-adhesive agent has the composition and concentration of the anti-adhesive liquid instructed by the control device 3, and the anti-adhesive agents are sequentially sent to the stock tank 53 by the piping 34 connected to the stock tank 53 and the pump 24. The pump 24 can also be controlled by the control device 3.

[0025] In the stock tank 53, an operator visually checks whether the sensor detects the amount of the anti-adhesive liquid, and when the amount falls below a certain level, the operator feeds back the information to the control device 3, making it possible to control the amount. In that case, preparation of new anti-adhesive liquid and / or sending of the anti-adhesive liquid in the dissolving tank 51 to the stock tank 53 is performed or carried out. The adhesion-preventing liquid is sent from the stock tank 53 via a pipe 37 and a pump 25 to an adhesion-preventing treatment device 2 equipped with a dip tank 91, and the unvulcanized rubber sheet is treated with the adhesion-preventing liquid. The method of the anti-adhesion treatment for the unvulcanized rubber sheet in the anti-adhesion treatment device 2 is not particularly limited, but an anti-adhesion treatment using a general immersion tank or a spray device (or both) is used. The anti-adhesion liquid used in the dip tank 91 is circulated and collected in the stock tank 53 through the pipe 38.

[0026] [Figure 3: Third embodiment] FIG. 3 is a schematic diagram showing a third embodiment of the automatic supply system for an adhesion inhibitor for unvulcanized rubber according to the present invention. The automatic supply system of this embodiment includes an anti-deposition liquid producing device 1, an anti-deposition treatment device 2, and a control device 3. The control device 3 includes a programming computer in which data of each condition is input in advance into a database. The adhesion-preventing liquid manufacturing apparatus 1 includes a container 11 for storing an adhesion-preventing agent A, and a pump 21 and a pipe 31 for supplying the adhesion-preventing agent from the container 11 to a storage tank 52. Similarly, a container 12 for storing the adhesion inhibitor B, and a pump 22 and a pipe 32 for supplying the adhesion inhibitor from the container 12 to the storage tank 52 are provided. Similarly, a container 13 for storing the adhesion inhibitor C, and a pump 23 and a pipe 33 for supplying the adhesion inhibitor from the container 13 to the storage tank 52 are provided. The containers 11 to 13 and the pumps and piping connected thereto may be one set or two or more sets. FIG. 3 shows an example in which three sets are provided.

[0027] The adhesion-preventive agents A to C are supplied by pumps 21 to 23 through pipes 31 to 33, respectively, and are supplied to a storage tank 52 through a solenoid valve 41. The pumps 21 to 23 and the solenoid valve 41 are connected to the control device 3 and can be controlled. The storage tank 52 is connected to the dissolution tank 51 via piping 35 and a pump 27, and the pump 27 is connected to the control device 3 and therefore can be controlled. A water source 81 is connected to the piping 35 between the storage tank 52 and the dissolving tank 51, and water can be supplied to the dissolving tank 51 via piping 82 and pump 25. Water can be controlled by the solenoid valve 42 connected to the control device 3 along the way. When an instruction to prepare an anti-adhesive liquid is received from an operator, or when it is determined that an anti-adhesive liquid should be prepared based on data managed by a programming computer based on past performance, an appropriate anti-adhesive liquid is prepared based on an instruction from the control device 3 (anti-adhesive agents A, B, C, ... are mixed in any ratio, or one arbitrary anti-adhesive agent is selected and supplied). It is fine if the anti-adhesive agents A to C are in liquid form that can be pumped, but if they are powders, they cannot be pumped, so a dissolving tank is required between the container and the pump. A predetermined anti-adhesive liquid is appropriately prepared from the amounts of anti-adhesive agents A to C and the amount of water supplied to the dissolution tank 51 so that the composition and concentration of the anti-adhesive liquid are instructed by the control device 3, and the anti-adhesive liquid is sequentially sent to the stock tank 53 by the piping 34 connected to the stock tank 53 and the pump 24. The pump 24 can also be controlled by the control device 3.

[0028] In the stock tank 53, an operator visually checks whether the sensor detects the amount of the anti-adhesive liquid, and when the amount falls below a certain level, the operator feeds back the information to the control device 3, making it possible to control the amount. In that case, preparation of new anti-adhesive liquid and / or sending of the anti-adhesive liquid in the dissolving tank 51 to the stock tank 53 is performed or carried out. The adhesion-preventing liquid is sent from the stock tank 53 via a pipe 37 and a pump 25 to an adhesion-preventing treatment device 2 equipped with a dip tank 91, and the unvulcanized rubber sheet is treated with the adhesion-preventing liquid. The method of the anti-adhesion treatment for the unvulcanized rubber sheet in the anti-adhesion treatment device 2 is not particularly limited, but an anti-adhesion treatment using a general immersion tank or a spray device (or both) is used. The anti-adhesion liquid used in the dip tank 91 is circulated and collected in the stock tank 53 through the pipe 38.

[0029] [Figure 4: Fourth embodiment] FIG. 4 is a schematic diagram showing a fourth embodiment of the automatic supply system for an adhesion inhibitor for unvulcanized rubber according to the present invention. The automatic supply system of this embodiment includes an anti-deposition liquid producing device 1, an anti-deposition treatment device 2, and a control device 3. The control device 3 includes a programming computer in which data of each condition is input in advance into a database. The adhesion-preventing liquid manufacturing apparatus 1 includes a container 11 for storing an adhesion-preventing agent A, and a pump 21 and a pipe 31 for supplying the adhesion-preventing agent from the container 11 to a storage tank 52. Similarly, a container 12 for storing the adhesion inhibitor B, and a pump 22 and a pipe 32 for supplying the adhesion inhibitor from the container 12 to the storage tank 52 are provided. Similarly, a container 13 for storing the adhesion inhibitor C, and a pump 23 and a pipe 33 for supplying the adhesion inhibitor from the container 13 to the storage tank 52 are provided. The containers 11 to 13 and the pumps and pipes connected thereto may be one set or two or more sets. FIG. 4 shows an example in which three sets are provided.

[0030] The adhesion-preventive agents A to C are supplied by pumps 21 to 23 through pipes 31 to 33, respectively, and are supplied to a storage tank 52 through a solenoid valve 41. The pumps 21 to 23 and the solenoid valve 41 are connected to the control device 3 and can be controlled. The storage tank 52 is connected to the dissolution tank 51 via piping 35 and a pump 27, and the pump 27 is connected to the control device 3 and therefore can be controlled. A water source 81 is connected to the dissolution tank 51, and water can be supplied to the dissolution tank 51 via piping 82 and pump 25. Water can be controlled by the solenoid valve 42 connected to the control device 3 along the way. When an instruction to prepare an anti-adhesive liquid is received from an operator, or when it is determined that an anti-adhesive liquid should be prepared based on data managed by a programming computer based on past performance, an appropriate anti-adhesive liquid is prepared based on an instruction from the control device 3 (anti-adhesive agents A, B, C, ... are mixed in any ratio, or one arbitrary anti-adhesive agent is selected and supplied). It is fine if the anti-adhesive agents A to C are in liquid form that can be pumped, but if they are powders, they cannot be pumped, so a dissolving tank is required between the container and the pump. A predetermined anti-adhesive liquid is appropriately prepared from the amounts of anti-adhesive agents A to C and the amount of water supplied to the dissolution tank 51 so that the composition and concentration of the anti-adhesive liquid are instructed by the control device 3, and the anti-adhesive liquid is sequentially sent to the stock tank 53 by the piping 34 connected to the stock tank 53 and the pump 24. The pump 24 can also be controlled by the control device 3.

[0031] In the stock tank 53, an operator visually checks whether the sensor detects the amount of the anti-adhesive liquid, and when the amount falls below a certain level, the operator feeds back the information to the control device 3, making it possible to control the amount. In that case, preparation of new anti-adhesive liquid and / or sending of the anti-adhesive liquid in the dissolving tank 51 to the stock tank 53 is performed or carried out. The adhesion-preventing liquid is sent from the stock tank 53 via a pipe 37 and a pump 25 to an adhesion-preventing treatment device 2 equipped with a dip tank 91, and the unvulcanized rubber sheet is treated with the adhesion-preventing liquid. The method of the anti-adhesion treatment for the unvulcanized rubber sheet in the anti-adhesion treatment device 2 is not particularly limited, but an anti-adhesion treatment using a general immersion tank or a spray device (or both) is used. The anti-adhesion liquid used in the dip tank 91 is circulated and collected in the stock tank 53 through the pipe 38.

[0032] In addition, as a part of each component of the automatic supply system of an adhesion inhibitor for unvulcanized rubber of the present invention, an existing commercially available automatic supply device may be used. [Explanation of symbols]

[0033] 1 Anti-fouling liquid production equipment 2. Anti-adhesion treatment equipment 3. Control device 11 Anti-adhesive container A 12 Anti-adhesive Container B 13 Anti-adhesive Container C 21, 22, 23, 24, 25, 26, 27 Pumps 31, 32, 33, 34, 35, 36, 37, 38 Piping 41, 42 Solenoid valve 51 Dissolving Tank 52 Anti-adhesive agent storage tank 53 Stock Tank 81 Water source 82, 83, 84, 85 Water supply pipe 91 Dip tank (immersion tank, Dip tank)

Claims

1. An automatic supply system for anti-adhesion agent for unvulcanized rubber, comprising an anti-adhesion liquid manufacturing device, an anti-adhesion treatment device, and a control device.

2. 2. The automatic supply system for an anti-adhesive agent for unvulcanized rubber according to claim 1, wherein the anti-adhesive liquid is prepared at a preset concentration and automatically sent to the dipping tank.

3. 2. The automatic supply system for anti-adhesive agent for unvulcanized rubber according to claim 1, further comprising a tank, a pump or a feeder for supplying the anti-adhesive agent for unvulcanized rubber, another tank for diluting the agent to prepare an anti-adhesive liquid, and a pump for sending the anti-adhesive liquid to a dip tank.

4. 2. The automatic anti-adhesive agent supply system for unvulcanized rubber according to claim 1, which is controlled by a program.

5. 2. The automatic anti-adhesive agent supply system for unvulcanized rubber according to claim 1, wherein the concentration in the dipping tank is controlled by a conductivity sensor and a programming computer, and new anti-adhesive agent is supplied to the dipping tank.

6. 2. The automatic supply system for an anti-adhesive agent for unvulcanized rubber according to claim 1, wherein the anti-adhesive agent for unvulcanized rubber contains, as a main component, at least one component selected from the group consisting of water-soluble polymers and smectite.

7. 2. The automatic supply system for an anti-adhesive agent for unvulcanized rubber according to claim 1, wherein water having a hardness of 0 to 1000 mg / L is used for dispersing the anti-adhesive agent.

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