Rubber mixing production system, rubber mixing production method

Abstract

A rubber refining production system, comprising a mixing mill, a feeder system connected to the mixing mill's discharge port, a carbon black feeding system for adding carbon black to the mixing mill, a batching system for preparing small and medium-sized ingredients, and a raw rubber feeding belt for adding raw rubber to the mixing mill, is characterized by further including a small and medium-sized ingredient feeding system for adding small and medium-sized ingredients to the mixing mill. The batching system, small and medium-sized ingredient feeding system, carbon black feeding system, and raw rubber feeding belt are respectively positioned above the mixing mill. The small and medium-sized ingredient feeding system includes a weighing and identification platform located at the discharge end of the batching system and a feeding pipe connecting the output end of the weighing and identification platform to the mixing mill's inlet. This invention improves production efficiency, reduces system equipment costs, failure rates, energy consumption, and labor input, simplifies the overall system structure, improves the reliability and efficiency of feeding, establishes a stable production cycle, and enhances the automation level of rubber refining production. This invention also provides a rubber refining production method.

Description

Technical Field

[0001] This invention relates to a rubber mixing production system and a rubber mixing production method, belonging to the field of rubber product manufacturing technology. Background Technology

[0002] In traditional internal mixing workshops, the transportation of raw materials, compounded rubber sheets, and final rubber sheets is mainly accomplished by forklifts, while material storage involves manual, single-layer stacking in designated areas. The transport of rubber compounds required for internal mixing, as well as the production of masterbatch and final rubber sheets, is primarily handled manually using battery-powered forklifts. This process is inefficient, labor-intensive, and space-consuming. Smaller materials are weighed, bagged, and stored in carts, which are then manually moved to the machines as needed, resulting in a cluttered and unmanageable workspace.

[0003] To improve production efficiency, the mixing workshop was upgraded to a drop-type mixing system. Carbon black and fillers used in larger quantities are automatically transported to the carbon black or powder tanks via a gas conveying system. After automatic weighing, they are directly unloaded into the mixing mill through pipelines. Smaller materials are stored on the third floor. For ease of operation, a feeding port is set up on the same floor. Weighing is completed on the third floor, and materials are then manually transported to the mixing mill's feeding port on the second floor for temporary storage. Alternatively, they can be automatically transported to the feeding port via a combination of rails and elevators for temporary storage. The weighing information is then manually or through the production execution system before being fed into the mixing mill for mixing. This method requires transferring the small and medium-sized materials to the second floor for temporary storage after batching, resulting in long turnaround times, a large required space, and wasted manpower and resources. Even with automation using rails and elevators (rail-type automatic feeding process), additional logistics rails and elevators on the second and third floors are needed, leading to high investment and a large footprint. Summary of the Invention

[0004] The rubber refining production system provided by this invention improves production efficiency, reduces system equipment costs, failure rates, energy consumption and manpower input, simplifies the structure of the entire system, improves the reliability and efficiency of material feeding, forms a stable production cycle, and improves the automation level of rubber refining production.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A rubber compounding production system, comprising a mixing mill, a feeder system connected to the discharge port of the mixing mill, a carbon black feeding system for feeding carbon black into the mixing mill, a batching system for preparing small and medium-sized materials, and a raw rubber feeding belt for feeding raw rubber into the mixing mill, characterized in that: it further comprises a small and medium-sized material feeding system for feeding small and medium-sized materials into the mixing mill, wherein the batching system, the small and medium-sized material feeding system, the carbon black feeding system and the raw rubber feeding belt are respectively arranged above the mixing mill, and the small and medium-sized material feeding system includes a feeding weighing and identification platform arranged at the discharge end of the batching system and a feeding pipe connecting the output end of the feeding weighing and identification platform to the feed inlet of the mixing mill.

[0007] Preferably, the rubber mixing production system is divided into three layers from top to bottom. The bottom spreading machine system is set in the first layer, the raw rubber feeding belt is set in the second layer, the carbon black feeding system and the feeding weighing and identification platform are set in the third layer, and the internal mixer is set in the first layer and above the bottom spreading machine system. The length of the feeding pipe is no more than 10 meters, and the feeding pipe is formed by connecting at least two sub-pipes from top to bottom, and the inclination rate of the sub-pipes decreases from top to bottom.

[0008] Preferably, the feeding and weighing identification platform includes a material bag storage area, a weighing conveyor belt with weighing function, a scanning identification device mounted above the weighing conveyor belt and having scanning identification function, and a buffer feeding belt for buffer feeding. The material bag storage area is located at the discharge end of the batching system.

[0009] Preferably, the material bag temporary storage area is a line-side warehouse, the weighing conveyor belt is set at the outlet end of the material bag temporary storage area, and the buffer feeding belt is set below the weighing conveyor belt with its input end aligned with the output end of the weighing identification conveyor belt.

[0010] Preferably, the batching system includes multiple additive discharge barrels containing rubber additives, a batching conveyor belt located below the additive discharge barrels, and a receiving bag placed on the batching conveyor belt. The additive discharge barrels are arranged side by side above the batching material.

[0011] Preferably, the carbon black feeding system includes a carbon black discharge bucket, a weighing hopper, and a feeding hopper arranged sequentially from top to bottom. Multiple carbon black discharge buckets are arranged side by side, and their discharge ends are connected to the weighing hopper through pipes. The discharge end of the weighing hopper is connected to the feeding hopper through pipes, and the discharge end of the feeding hopper is connected to the feed inlet of the internal mixer through pipes.

[0012] Preferably, the top of the internal mixer is equipped with a dust extraction fume hood connected to the negative pressure fan duct, and the dust extraction fume hood is connected to the feeding duct via a duct.

[0013] A method for producing rubber by means of a rubber refining system as described in any one of the claims, characterized in that it includes the following steps:

[0014] S1: After the medium and small materials are batched by the batching system, they are transmitted to the feeding, weighing and identification platform;

[0015] S2: Raw rubber is fed into the internal mixer via a raw rubber feeding belt, and carbon black is fed into the internal mixer via a carbon black feeding system. The raw rubber and carbon black are mixed in the internal mixer. At the same time, the feeding weighing and identification platform identifies, weighs and waits for the medium material to be fed.

[0016] S3: After mixing, the medium material is put into the internal mixer for mixing, while the feeding weighing and identification platform identifies, weighs and waits for the small material to be fed.

[0017] S4: After mixing, put the small materials into the internal mixer for further mixing;

[0018] S5: After mixing, the rubber is discharged from the internal mixer to the auxiliary system. In the lower conveyor system, the rubber is cooled, turned, dispersed in a thin pass, and cooled and collected in sequence to complete the rubber mixing.

[0019] Preferably, the mixing time in step S2 is 0.5-2 min and the temperature is 110-140℃, the mixing time in step S3 is 2-4 min and the temperature is 130-160℃, and the mixing time in step S4 is 2-3 min and the temperature is 100-110℃.

[0020] Preferably, the speed of the buffer feeding belt is ≤0.1m / s, and the length is 0.5m-2m.

[0021] The beneficial effects of the invention are:

[0022] 1. The rubber mixing production system of the present invention places the batching system, the small and medium material feeding system, the carbon black feeding system, and the raw material feeding belt above the internal mixer. After the small and medium materials are batched by the batching system, they are transferred to the feeding weighing and identification platform. The feeding weighing and identification platform re-weighs and identifies the small and medium materials and then directly feeds them into the internal mixer through the feeding pipe. The height difference between the feeding weighing and identification platform and the internal mixer is used to make the material in the feeding pipe fall into the internal mixer under the action of gravity, avoiding the need for manual transfer or track equipment transfer of small and medium materials. This improves the falling internal mixer system, forms an automatic feeding system under the action of gravity, improves production efficiency, reduces system equipment costs, failure rate, energy consumption and labor input, simplifies the structure of the entire system, improves the reliability and efficiency of feeding, forms a stable production cycle, and improves the automation level of rubber mixing production.

[0023] 2. The feeding weighing and identification platform and the carbon black feeding system are set on the third layer, the raw rubber feeding belt is set on the second layer, and the internal mixer is set on the first layer. The height difference between the carbon black feeding system, the feeding weighing and identification platform and the internal mixer is used to ensure that the materials fed from the feeding pipe and the carbon black feeding system will fall into the internal mixer quickly under the action of gravity, thus ensuring smooth feeding.

[0024] 3. Install a dust extraction fume hood on the top of the internal mixer. The dust extraction fume hood is connected to the negative pressure fan duct to use negative pressure to suck away the dust generated when materials are fed in and during mixing. The dust extraction fume hood is connected to the feeding pipe to promptly suck away the dust entering the feeding pipe, avoiding blockage of the feeding pipe due to dust accumulation during long-term use and ensuring the reliability of feeding. Attached Figure Description

[0025] Figure 1This is a flow chart of the rubber compounding production system of the present invention. Detailed Implementation

[0026] The following is combined with Figure 1 The embodiments of the present invention will be described in detail below.

[0027] A rubber compounding production system, comprising a mixing mill 1, a lower spreading machine system 2 connected to the discharge port of the mixing mill, a carbon black feeding system 3 for feeding carbon black into the mixing mill 1, a batching system 4 for preparing small and medium-sized materials, and a raw rubber feeding belt 5 for feeding raw rubber into the mixing mill, characterized in that: it further comprises a small and medium-sized material feeding system 6 for feeding small and medium-sized materials into the mixing mill 1, wherein the batching system 4, the small and medium-sized material feeding system 6, the carbon black feeding system 3 and the raw rubber feeding belt 5 are respectively arranged above the mixing mill 1, and the small and medium-sized material feeding system 6 includes a feeding weighing and identification platform 7 arranged at the discharge end of the batching system 4 and a feeding pipe 8 connecting the output end of the feeding weighing and identification platform 7 and the feed inlet of the mixing mill 1.

[0028] The rubber mixing production system described above places the batching system 4, the small and medium material feeding system 6, the carbon black feeding system 3, and the raw material feeding belt 5 above the internal mixer 1. After being batched by the batching system 4, the small and medium materials are transported to the feeding weighing and identification platform 7. The feeding weighing and identification platform 7 re-weighs and identifies the small and medium materials and then directly feeds them into the internal mixer 1 through the feeding pipe 8. The height difference between the feeding weighing and identification platform 7 and the internal mixer 1 causes the material in the feeding pipe 8 to fall into the internal mixer 1 under the action of gravity, avoiding the need for manual transfer or rail equipment transfer of small and medium materials. This improves the falling internal mixer system, forming an automatic feeding system under the action of gravity, improving production efficiency, reducing system equipment costs, failure rate, energy consumption and labor input, simplifying the structure of the entire system, improving the reliability and efficiency of feeding, forming a stable production cycle, and improving the automation level of rubber mixing production.

[0029] The rubber mixing production system is divided into three layers from top to bottom. The bottom spreading machine system 2 is located on the first layer, the raw rubber feeding belt 5 is located on the second layer, and the carbon black feeding system 3 and the feeding weighing and identification platform 7 are located on the third layer. The internal mixer 1 is located on the first layer and above the bottom spreading machine system 2. The length of the feeding pipe 8 is no more than 10 meters. The feeding pipe 8 is formed by connecting at least two sections of branch pipe 81 from top to bottom, and the inclination rate of the branch pipe 81 decreases from top to bottom. By placing the feeding weighing and identification platform 7 and the carbon black feeding system 3 on the third layer, the raw rubber feeding belt 5 on the second layer, and the internal mixer on the first layer, the feeding pipe 8 is designed with an inclination by utilizing the height difference between the carbon black feeding system 3, the feeding weighing and identification platform 7, and the internal mixer 1. This ensures that the materials fed from the feeding pipe 8 and the carbon black feeding system 3 will fall quickly into the internal mixer 1 under the action of gravity, ensuring smooth feeding. The inclination rate of the branch pipes 81 decreases from top to bottom. This change in inclination rate slows the material as it descends along the feed pipes 81, reducing its velocity when entering the internal mixer 1. This prevents the material bag from breaking due to excessive speed, which would affect the mixing effect and ensure the reliability of the rubber compound. The number of branch pipes 81 can be adjusted according to the length of the feed pipes 8. This ensures not only that the material can be smoothly fed into the internal mixer 1 from the feed pipes 8, but also that the material bag does not break when it enters the internal mixer 1.

[0030] The feeding and weighing identification platform 7 includes a material bag storage area 71, a weighing conveyor belt 72 with weighing function, a scanning identification device 73 mounted above the weighing conveyor belt 72 and with scanning identification function, and a buffer feeding belt 74 for buffer feeding. The material bag storage area 71 is located at the discharge end of the batching system 4. The weighing conveyor belt 72 is used to re-weigh the material bags output from the material bag storage area 71. The scanning identification device 73 is used to identify the material bags. The scanning identification device 73 is an infrared scanning device and / or a camera. The buffer feeding belt 74 receives the material bags output from the weighing conveyor belt 72 and feeds them in accordance with the mixing time of the internal mixer.

[0031] The material bag temporary storage area 71 is a line-side storage area. The weighing conveyor belt 72 is located at the outlet end of the material bag temporary storage area, and the buffer feeding belt 74 is located below the weighing conveyor belt 72 with its input end aligned with the output end of the weighing identification conveyor belt 72. The material in the line-side storage area 71 is output to the weighing conveyor belt 72 for re-weighing and identification, and then output from the weighing conveyor belt 72 to the buffer feeding belt 74 to await feeding.

[0032] Preferably, the batching system 4 includes multiple additive discharge tanks 41 each containing rubber additives, a batching belt 42 positioned below the additive discharge tanks 41, and receiving bags 43 placed on the batching belt 42. The additive discharge tanks 43 are arranged side-by-side above the batching materials 42. The batching belt 42 has a weighing function, allowing the additive discharge tanks 41 to dispense a fixed amount of material. The receiving bags 43 move with the batching belt 42, sequentially passing through the additive discharge tanks 41 to complete the batching process.

[0033] The carbon black feeding system 3 includes a carbon black discharge hopper 31, a weighing hopper 32, and a feeding hopper 33 arranged sequentially from top to bottom. Multiple carbon black discharge hoppers 31 are arranged side-by-side, with their discharge ends connected to the weighing hopper 32 via pipes. The discharge ends of the weighing hopper 32 and the feeding hopper 33 are connected via pipes, and the discharge ends of the feeding hopper 33 are connected to the inlet of the internal mixer 1 via pipes. Carbon black of different materials is separately loaded into the carbon black discharge hoppers 31. According to the requirements of rubber mixing, a quantitative amount of carbon black is discharged from the carbon black discharge hoppers 31, weighed by the weighing hopper 32, and then fed into the internal mixer 1 through the feeding hopper 33, ensuring the accuracy and reliability of carbon black feeding.

[0034] The internal mixer 1 is equipped with a dust extraction fume hood 9 on its top, which is connected to a negative pressure fan duct. The dust extraction fume hood 9 is also connected to the feeding pipe 8 via a pipe. The dust extraction fume hood 9, installed on top of the internal mixer 1, utilizes negative pressure to remove dust generated during material feeding and mixing. The connection between the dust extraction fume hood 9 and the feeding pipe 8 ensures timely removal of dust entering the feeding pipe 8, preventing blockage due to dust accumulation during long-term use and guaranteeing reliable feeding.

[0035] A method for producing rubber by means of a rubber refining system as described in any one of the claims, characterized in that it includes the following steps:

[0036] S1: After the medium and small materials are batched by the batching system 4, they are transferred to the feeding, weighing and identification platform 7;

[0037] S2: Raw rubber is fed into the internal mixer 1 through the raw rubber feeding belt 5, and carbon black is fed into the internal mixer 1 through the carbon black feeding system 3. The raw rubber and carbon black are mixed in the internal mixer 1. At the same time, the feeding weighing and identification platform 7 identifies and weighs the medium material and waits for feeding.

[0038] S3: After mixing, the medium material is put into the internal mixer 1 for mixing, while the feeding weighing and identification platform 7 identifies, weighs and waits for the small material to be fed.

[0039] S4: After the mixing is completed, put the small materials into the internal mixer 1 for mixing;

[0040] S5: After mixing, the rubber is discharged from the internal mixer 1 to the lower auxiliary system 2. In the lower conveyor system 2, the rubber is cooled, turned, dispersed in a thin pass, and cooled and collected in sequence to complete the rubber mixing.

[0041] The rubber compounding production method described above utilizes the height difference between the feeding weighing and identification platform 7 and the internal mixer 1 to allow the material in the feeding pipe 8 to fall into the internal mixer 1 under the action of gravity. This avoids the need for manual transfer or rail transfer of small and medium-sized materials, forming an automatic feeding system where materials fall through the pipe under the action of gravity, thus improving production efficiency.

[0042] In step S2, the mixing time is 0.5-2 minutes and the temperature is 110-140℃; in step S3, the mixing time is 2-4 minutes and the temperature is 130-160℃; and in step S4, the mixing time is 2-3 minutes and the temperature is 100-110℃. This ensures the effectiveness and reliability of the mixing process at each stage.

[0043] The speed of the buffer feeding belt is ≤0.1m / s, and its length is between 0.5m and 2m. The speed of the buffer feeding belt corresponds to the mixing time, ensuring that the material on the buffer feeding belt enters the internal mixer 1 after each stage of mixing, thus ensuring the reliability of rubber mixing.

[0044] The technical solutions of the embodiments of the present invention have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A rubber compounding production system, comprising controlling an internal mixer, a feeder system connected to the discharge port of the internal mixer, a carbon black feeding system for feeding carbon black into the internal mixer, a batching system for preparing small and medium-sized materials, and a raw rubber feeding belt for feeding raw rubber into the internal mixer, characterized in that: It also includes a small and medium material feeding system for feeding small and medium materials into the internal mixer. The batching system, the small and medium material feeding system, the carbon black feeding system and the raw rubber feeding belt are respectively set above the internal mixer. The small and medium material feeding system includes a feeding weighing and identification platform set at the discharge end of the batching system and a feeding pipe connecting the output end of the feeding weighing and identification platform and the feed inlet of the internal mixer. The rubber mixing production system is divided into three layers from top to bottom. The bottom spreading machine system is located on the first layer, the raw rubber feeding belt is located on the second layer, and the carbon black feeding system and the feeding weighing and identification platform are located on the third layer. The internal mixer is located on the first layer and above the bottom spreading machine system. The length of the feeding pipe is no more than 10 meters. The feeding pipe is formed by connecting at least two sections of sub-pipes from top to bottom, and the inclination rate of the sub-pipes decreases from top to bottom. The feeding and weighing identification platform includes a material bag storage area, a weighing conveyor belt with weighing function, a scanning identification device mounted above the weighing conveyor belt with scanning identification function, and a buffer feeding belt for buffer feeding. The material bag storage area is located at the discharge end of the batching system.

2. The rubber compounding production system according to claim 1, characterized in that: The material bag temporary storage area is a line-side warehouse. The weighing conveyor belt is located at the outlet end of the material bag temporary storage area, and the buffer feeding belt is located below the weighing conveyor belt with its input end aligned with the output end of the weighing identification conveyor belt.

3. The rubber compounding production system according to claim 1, characterized in that: The batching system includes multiple additive discharge barrels containing rubber additives, a batching conveyor belt located below the additive discharge barrels, and a receiving bag placed on the batching conveyor belt. The additive discharge barrels are arranged side by side above the batching material.

4. The rubber compounding production system according to claim 1, characterized in that: The carbon black feeding system includes a carbon black discharge hopper, a weighing hopper, and a feeding hopper arranged sequentially from top to bottom. Multiple carbon black discharge hoppers are arranged side by side, and their discharge ends are connected to the weighing hopper through pipes. The discharge end of the weighing hopper is connected to the feeding hopper through pipes, and the discharge end of the feeding hopper is connected to the feed inlet of the internal mixer through pipes.

5. The rubber compounding production system according to claim 1, characterized in that: The top of the internal mixer is equipped with a dust extraction fume hood connected to the negative pressure fan duct, and the dust extraction fume hood is connected to the feeding duct via a pipe.

6. A method for producing rubber by means of a rubber refining production system according to any one of claims 1 to 5, characterized in that, Includes the following steps: S1: After the medium and small materials are batched by the batching system, they are transmitted to the feeding, weighing and identification platform; S2: Raw rubber is fed into the internal mixer via a raw rubber feeding belt, and carbon black is fed into the internal mixer via a carbon black feeding system. The raw rubber and carbon black are mixed in the internal mixer. At the same time, the feeding weighing and identification platform identifies, weighs and waits for the medium material to be fed. S3: After mixing, the medium material is put into the internal mixer for mixing, while the feeding weighing and identification platform identifies, weighs and waits for the small material to be fed. S4: After mixing, put the small materials into the internal mixer for further mixing; S5: After mixing, the rubber is discharged from the internal mixer to the auxiliary system. In the lower conveyor system, the rubber is cooled, turned, dispersed in a thin pass, and cooled and collected in sequence to complete the rubber mixing.

7. The rubber compounding production method according to claim 6, characterized in that: In step S2, the mixing time is 0.5-2 min and the temperature is 110-140℃; in step S3, the mixing time is 2-4 min and the temperature is 130-160℃; in step S4, the mixing time is 2-3 min and the temperature is 100-110℃.

8. The rubber compounding production method according to claim 7, characterized in that: The speed of the buffer feeding belt is ≤0.1m / s, and its length is 0.5m-2m.

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