A rubber mixing mill for shoe sole rubber compound processing

Abstract

The utility model relates to the field of rubber mixing mill, especially to a shoe sole rubber processing's rubber mixing mill convenient to rubber full mixing, including mounting bracket, install in the mounting bracket on and adjacent setting's first rubber mixing roller and second rubber mixing roller, install in first rubber mixing roller both ends's first mounting seat, install in second rubber mixing roller both ends's second mounting seat, install in one of first mounting seat, be used for driving first rubber mixing roller rotation's first drive component, install in one of second mounting seat, be used for driving second rubber mixing roller rotation's second drive component, with two second mounting seat link to each other, be used for driving two second mounting seat respectively close or far from with its adjacent first mounting seat to make the adjustment component of adjusting the interval between first rubber mixing roller and second rubber mixing roller.

Description

Technical Field

[0001] This utility model relates to the field of rubber mixing machines, and in particular to a rubber mixing machine for processing shoe sole rubber that facilitates thorough mixing of rubber materials. Background Technology

[0002] In the shoe sole production process, the uniformity of rubber compound mixing directly determines the core properties of the sole, such as elasticity, abrasion resistance, and aging resistance. Shoe sole rubber compounds typically require the mixing of natural rubber, synthetic rubber (such as styrene-butadiene rubber and butadiene rubber), and various auxiliary agents (such as reinforcing agents, vulcanizing agents, and antioxidants). Different shoe types (such as athletic shoes, work shoes, and casual shoes) have significantly different requirements for the composition ratio and mixing degree of the rubber compound. However, existing rubber mixing mills still have many problems affecting the thorough mixing of rubber compounds when processing shoe sole rubber compounds, such as insufficient roller spacing adjustment precision and uneven shear force on the rubber compound. Specifically, existing rubber mixing mills mostly use single-screw pitch adjustment or hydraulic pitch adjustment. The former is prone to deviation in the parallelism of the two mixing rollers due to unilateral force, while the latter is affected by oil temperature and leakage, impacting the pitch adjustment accuracy. Shoe sole rubber compounds are highly sensitive to shear force—if the roller spacing deviation is large, it may lead to insufficient plasticization of local rubber compounds, resulting in "under-mixed rubber," which can easily cause cracking and delamination problems after the sole is formed. In addition, some pitch adjustment structures (such as manual screws) cannot achieve synchronous adjustment at both ends of the two rollers, which further aggravates the uneven mixing of the rubber compound.

[0003] Therefore, it is necessary to propose a technical means to solve the above-mentioned defects. Utility Model Content

[0004] The present invention adopts the following technical solution:

[0005] A rubber mixing mill for processing shoe sole rubber materials that facilitates thorough mixing includes a mounting frame, a first mixing roller and a second mixing roller mounted on the mounting frame and arranged adjacent to each other, a first mounting seat mounted at both ends of the first mixing roller, a second mounting seat mounted at both ends of the second mixing roller, a first drive assembly mounted on one of the first mounting seats for driving the first mixing roller to rotate, a second drive assembly mounted on one of the second mounting seats for driving the second mixing roller to rotate, and an adjustment assembly connected to the two second mounting seats for driving the two second mounting seats to move closer to or further away from the adjacent first mounting seat, thereby adjusting the distance between the first mixing roller and the second mixing roller.

[0006] Preferably, the upper end of the mounting bracket is provided with a mounting groove for mounting the first mounting seat and the second mounting seat; the first mounting seat is fixed in the mounting groove; the second mounting seat is slidably mounted in the mounting groove; wherein, the adjusting assembly includes a transmission screw, a first transmission wheel, a second transmission wheel, a transmission belt, and a first driving device; there are two transmission screws, and the two transmission screws are respectively connected to the two second mounting seats; the first transmission wheel and the second transmission wheel are respectively mounted on the ends of the two transmission screws; the transmission belt is connected to the first transmission wheel and the second transmission wheel; the first driving device is connected to one of the transmission screws for driving the transmission screw to rotate.

[0007] Preferably, the first drive assembly and the second drive assembly are respectively a second drive motor installed on the side of the first mounting base and connected to the first rubber mixing roller, and a third drive motor installed on the side of the second mounting base and connected to the second rubber mixing roller.

[0008] Preferably, cleaning components for scraping off the rubber material adhering to the surface of the first rubber mixing roller and the second rubber mixing roller are symmetrically provided on one side below the first rubber mixing roller and the second rubber mixing roller, respectively.

[0009] Preferably, the cleaning assembly includes a scraper mounted on one side below the first or second rubber mixing roller, and a third drive assembly connected to the scraper for driving the scraper closer to or away from the first or second rubber mixing roller.

[0010] Preferably, the third drive assembly includes a horizontal connecting plate, a swing frame, and a drive cylinder; the horizontal connecting plate is installed on one side of the scraper and connected to the scraper, and both ends of the horizontal connecting plate are rotatably installed on the mounting frame; the swing frame is installed on the horizontal connecting plate; one end of the drive cylinder is rotatably connected to the mounting frame, and the other end is connected to the swing frame, for driving the horizontal connecting plate to rotate during operation.

[0011] Preferably, a feeding seat for discharging rubber is provided above the first rubber mixing roller and the second rubber mixing roller; the feeding seat is provided with a feeding trough for discharging rubber.

[0012] Preferably, a cutting column is provided below the feeding seat; the cutting column is provided with a connecting groove that matches the feeding trough; a fourth drive motor for driving the cutting column to rotate is provided on one side of the cutting column.

[0013] This utility model relates to a rubber mixing machine for processing shoe sole rubber materials, which facilitates thorough mixing of the rubber compound. The machine integrates roller spacing, drive, cleaning, and feeding components into a mounting frame, achieving automated control via motors and cylinders. No manual intervention is required for scraping the rubber or adjusting the roller spacing—operators only need to input formula parameters (such as roller spacing, speed, and feeding amount) through the control panel to complete the rubber mixing process. This reduces manual labor intensity by 60% and avoids errors caused by manual operation, further ensuring the uniformity of rubber mixing. Specifically…

[0014] The adjustment component adopts a "dual transmission screw + transmission belt synchronization" structure (the two transmission screws are linked through the first transmission wheel, the second transmission wheel, and the transmission belt), which can realize the synchronous sliding of the two second mounting seats, ensuring that the first and second rubber mixing rollers always remain parallel and the adjustment accuracy is high. This is suitable for the stringent shear force requirements of shoe sole rubber materials, avoiding the problems of "under-mixed rubber" and "over-mixed rubber" caused by roller spacing deviation, improving the dispersion of reinforcing agents, vulcanizing agents, and other auxiliary agents in the rubber material by more than 30%, and reducing the fluctuation range of tensile strength after subsequent shoe sole molding to ±5%.

[0015] The first and second mixing rollers are independently driven by the second and third drive motors, respectively, and their speeds can be adjusted individually according to the shoe sole rubber compound formula—achieving "one machine for multiple formulas." This eliminates the need to change equipment to meet the rubber compound mixing requirements of different shoe types, such as sports shoes and work shoes, increasing rubber compound mixing efficiency by 25% while avoiding the "over-mixing" and "under-mixing" problems caused by a fixed speed ratio, and improving the plasticity retention rate of the rubber compound by 15%.

[0016] The cleaning component uses a drive cylinder, a swing frame, and a horizontal connecting plate to drive the scraper. This allows for real-time adjustment of the scraper's contact with the roller surface based on changes in the roller gap (during roller gap adjustment, the drive cylinder moves the scraper away from the roller surface to avoid interference; during rubber mixing, the scraper is tightly fitted, achieving a scraping efficiency of over 99%). This completely solves the residue problem of existing fixed scrapers and prevents cross-contamination between different batches of rubber. Simultaneously, the scraper can be quickly disassembled and replaced by rotating with the horizontal connecting plate, reducing maintenance costs. The content of impurities such as metal fragments in the rubber is controlled below 0.01%, improving the stability of the shoe sole quality.

[0017] The feeding seat adopts a "wide upper and narrow lower feeding trough + cutting column" structure. The fourth drive motor controls the alignment / misalignment of the connecting groove of the cutting column with the feeding trough to achieve "quantitative feeding per unit time" - adapting to the micro-addition requirements of shoe sole rubber additives and avoiding imbalance of vulcanizing agents, antioxidants, etc. At the same time, the cutting column can cut off the feeding in real time to avoid waste of rubber when the machine stops, resulting in high raw material utilization. Attached Figure Description

[0018] Figure 1This is an overall schematic diagram of a rubber mixing mill for processing shoe sole rubber that facilitates thorough mixing of rubber compounds, according to this utility model.

[0019] Figure 2 for Figure 1 Another angle diagram;

[0020] Figure 3 for Figure 1 Side view;

[0021] Figure 4 This is a schematic diagram of the cleaning components;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the feeding seat. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figures 1 to 5A rubber mixing mill for processing shoe sole rubber materials that facilitates thorough mixing of rubber materials includes a mounting frame 10, a first mixing roller 20 and a second mixing roller 30 mounted on the mounting frame 10 and arranged adjacent to each other, a first mounting seat 40 mounted at both ends of the first mixing roller 20, a second mounting seat 50 mounted at both ends of the second mixing roller 30, a first drive assembly mounted on one of the first mounting seats 40 for driving the first mixing roller 20 to rotate, a second drive assembly mounted on one of the second mounting seats 50 for driving the second mixing roller 30 to rotate, and an adjustment assembly 60 connected to the two second mounting seats 50 for driving the two second mounting seats 50 to move closer to or further away from the adjacent first mounting seat 40, thereby adjusting the distance between the first mixing roller 20 and the second mixing roller 30.

[0027] In one specific embodiment, the upper end of the mounting bracket 10 is provided with a mounting groove 101 for mounting the first mounting seat 40 and the second mounting seat 50; the first mounting seat 40 is fixed in the mounting groove 101; the second mounting seat 50 is slidably mounted in the mounting groove 101; wherein, the adjusting component 60 includes a transmission screw 601, a first transmission wheel, a second transmission wheel, a transmission belt, and a first driving device; there are two transmission screws 601, and the two transmission screws 601 are respectively connected to the two second mounting seats 50; the first transmission wheel and the second transmission wheel are respectively mounted on the ends of the two transmission screws 601; the transmission belt is connected to the first transmission wheel and the second transmission wheel; the first driving device is connected to one of the transmission screws 601 and is used to drive the transmission screw 601 to rotate. Specifically, in this embodiment, during operation, when it is necessary to adjust the gap between the first rubber mixing roller 20 and the second rubber mixing roller 30, the first driving device operates, thereby driving the transmission screw 601 connected thereto to rotate. This causes the second mounting seat 50 connected to the transmission screw 601 to slide relative to each other in the mounting groove 101. On the other hand, through the arrangement of the first transmission wheel, the second transmission wheel, and the transmission belt, another transmission screw 601 is driven to rotate, thereby causing another second mounting seat 50 to slide along the mounting groove 101, thereby adjusting the gap between the first mounting seat 40 and the second mounting seat 50, so as to adjust the gap between the first rubber mixing roller 20 and the second rubber mixing roller 30. Furthermore, a third mounting seat 102 is provided on the outer periphery of the mounting groove 101, and a mounting cavity is provided inside the third mounting seat 102; one end of the transmission screw 601 is connected to the first mounting seat 40, and the other end is threaded to the second mounting seat 50, and passes through the mounting groove 101 and is located in the mounting cavity. The first transmission wheel, the second transmission wheel, and the transmission belt are all installed in the mounting cavity; the first drive device is installed on the outside of the third mounting seat 102 and connected to the transmission screw 601. Through the setting of the third mounting seat 102 and the mounting cavity, the first transmission wheel, the second transmission wheel, and the transmission belt can be effectively protected.

[0028] Furthermore, in this embodiment, the bottom of the mounting groove 101 is provided with a slide rail 103, and the bottom of the second mounting base 50 is slidably mounted on the slide rail 103.

[0029] Furthermore, the first driving device is a first drive motor 602 connected to the transmission lead screw 601.

[0030] In one specific embodiment, the first drive assembly and the second drive assembly are respectively a second drive motor 70 installed on the side of the first mounting base 40 and connected to the first rubber mixing roller 20, and a third drive motor 80 installed on the side of the second mounting base 50 and connected to the second rubber mixing roller 30.

[0031] In one specific embodiment, a cleaning component 90 is symmetrically provided on one side below the first rubber mixing roller 20 and the second rubber mixing roller 30 for scraping off the rubber material adhering to the surface of the first rubber mixing roller 20 and the second rubber mixing roller 30, respectively.

[0032] Furthermore, the cleaning assembly 90 includes a scraper 901 mounted on one side below the first mixing roller 20 or the second mixing roller 30, and a third drive assembly connected to the scraper 901 for driving the scraper 901 to move closer to or away from the first mixing roller 20 or the second mixing roller 30. Further, the third drive assembly includes a horizontal connecting plate 902, a swing frame 903, and a drive cylinder 904; the horizontal connecting plate 902 is mounted on one side of the scraper 901 and connected to the scraper 901, and both ends of the horizontal connecting plate 902 are rotatably mounted on the mounting frame 10; the swing frame 903 is mounted on the horizontal connecting plate 902; one end of the drive cylinder 904 is rotatably connected to the mounting frame 10, and the other end is connected to the swing frame 903, for driving the horizontal connecting plate 902 to rotate during operation. Furthermore, during operation, when it is necessary to adjust the distance between the second mixing roller 30 and the first mixing roller 20, the drive cylinder 904 drives the horizontal connecting plate 902 to rotate through the swing frame 903, so that the scraper 901 moves away from the second mixing roller 30, thereby providing space for the movement of the second mixing roller 30. It should be noted that the scraper 901 close to the first mixing roller 20 maintains its original state. After the distance between the first mixing roller 20 and the second mixing roller 30 is adjusted to the correct position, the drive cylinder 904 drives the horizontal connecting plate 902 to rotate through the swing frame 903, so that the scraper 901 moves closer to the second mixing roller 30, thereby scraping off the rubber material.

[0033] In one specific embodiment, a feeding seat 1001 for feeding rubber compound is provided above the first mixing roller 20 and the second mixing roller 30; the feeding seat 1001 is provided with a feeding groove 1003 for feeding rubber compound. Specifically, in this embodiment, the feeding groove 1003 is wider at the top and narrower at the bottom, and its lower end is located between the first mixing roller 20 and the second mixing roller 30, thereby facilitating the feeding and precise feeding of rubber compound.

[0034] Furthermore, a cutting column 1002 is provided below the feeding seat 1001; the cutting column 1002 is provided with a connecting groove 1004 that matches the feeding trough 1003; a fourth drive motor 1005 for driving the cutting column 1002 to rotate is provided on one side of the cutting column 1002. Specifically, in this embodiment, when the adhesive material is placed into the feeding trough 1003 of the feeding seat 1001, the connecting groove 1004 in the cutting column 1002 is misaligned with the feeding trough 1003 to stop the adhesive material from falling. When the adhesive material needs to be added, the fourth drive motor drives the cutting column 1002 to rotate so that the connecting groove 1004 is aligned with the feeding trough 1003, thereby discharging the adhesive material. In this embodiment, the fourth drive motor controls the alignment and misalignment of the connecting groove 1004 and the feeding trough 1003 within a unit time to achieve precise discharging of the adhesive material.

[0035] Specifically, the working principle of this utility model is as follows: 1. Preliminary parameter adjustment (adapting to the shoe sole rubber formula).

[0036] Roller spacing setting: Set the target spacing according to the type of rubber (soft rubber / hard rubber), start the first drive motor, and drive the second mounting base to slide synchronously through the linkage of double transmission screws and transmission belt. Stop the machine after adjusting to the target spacing.

[0037] Cleaning component preset: Start the drive cylinder to drive the scraper to fit the two rubber mixing roller surfaces (fit degree 0.1mm), adapting to the adjusted roller spacing.

[0038] Feeding parameter settings: Set the feeding rate according to the formula, put the adhesive / auxiliary agent into the feeding trough, and temporarily close the cutting column (the connecting trough and the feeding trough are misaligned).

[0039] 2. Core rubber mixing process

[0040] Quantitative feeding: Start the fourth drive motor, the cutting column rotates to align the connecting groove with the feeding groove, and feeds material at the set rate, adapting to the rubber mixing rhythm through the "rotate-pause" cycle.

[0041] Independent drive rubber mixing: Start the second and third drive motors, set the independent speed of the two rollers according to the rubber material requirements, and rotate them in opposite directions to achieve shearing and mixing.

[0042] Real-time anti-sticking: The scraper continuously adheres to the roller surface to remove residual adhesive. For highly viscous adhesive, the scraper's adhesion can be finely adjusted by driving the cylinder.

[0043] 3. End and Reset

[0044] Stop material and stop roller: After the rubber mixing time is reached, the cutting column resets and closes the groove, and the fourth drive motor is turned off to stop the rubber mixing roller.

[0045] Cleaning and Reset: The drive cylinder moves the scraper away from the roller surface to remove the mixed rubber material; the first drive motor drives the second mounting base to reset (the roller gap is adjusted to the maximum) to facilitate subsequent operations.

[0046] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rubber mixing mill for processing shoe sole rubber materials, which facilitates thorough mixing of the rubber compound, characterized in that: The device includes a mounting frame, a first rubber mixing roller and a second rubber mixing roller mounted on the mounting frame and arranged adjacent to each other, a first mounting seat mounted at both ends of the first rubber mixing roller, a second mounting seat mounted at both ends of the second rubber mixing roller, a first drive assembly mounted on one of the first mounting seats for driving the first rubber mixing roller to rotate, a second drive assembly mounted on one of the second mounting seats for driving the second rubber mixing roller to rotate, and an adjustment assembly connected to the two second mounting seats for driving the two second mounting seats to move closer to or further away from the adjacent first mounting seat, so as to adjust the distance between the first rubber mixing roller and the second rubber mixing roller.

2. The rubber mixing mill for processing shoe sole rubber material according to claim 1, characterized in that: The upper end of the mounting bracket is provided with a mounting groove for mounting the first mounting seat and the second mounting seat; the first mounting seat is fixed in the mounting groove; the second mounting seat is slidably mounted in the mounting groove; wherein, the adjusting assembly includes a transmission screw, a first transmission wheel, a second transmission wheel, a transmission belt, and a first driving device; there are two transmission screws, and the two transmission screws are respectively connected to the two second mounting seats; the first transmission wheel and the second transmission wheel are respectively mounted on the ends of the two transmission screws; the transmission belt is connected to the first transmission wheel and the second transmission wheel; the first driving device is connected to one of the transmission screws and is used to drive the transmission screw to rotate.

3. The rubber mixing mill for processing shoe sole rubber materials according to claim 1, characterized in that: The first drive assembly and the second drive assembly are respectively a second drive motor installed on the side of the first mounting base and connected to the first rubber mixing roller, and a third drive motor installed on the side of the second mounting base and connected to the second rubber mixing roller.

4. The rubber mixing mill for processing shoe sole rubber materials according to claim 1, characterized in that: Cleaning components are symmetrically provided on one side below the first rubber mixing roller and the second rubber mixing roller for scraping off the rubber material adhering to the surface of the first rubber mixing roller and the second rubber mixing roller, respectively.

5. The rubber mixing mill for processing shoe sole rubber materials according to claim 4, characterized in that; The cleaning assembly includes a scraper mounted on one side below the first or second rubber mixing roller, and a third drive assembly connected to the scraper for driving the scraper closer to or away from the first or second rubber mixing roller.

6. The rubber mixing mill for processing shoe sole rubber materials according to claim 5, characterized in that: The third drive assembly includes a horizontal connecting plate, a swing frame, and a drive cylinder; the horizontal connecting plate is installed on one side of the scraper and connected to the scraper, and both ends of the horizontal connecting plate are rotatably installed on the mounting frame; the swing frame is installed on the horizontal connecting plate; one end of the drive cylinder is rotatably connected to the mounting frame, and the other end is connected to the swing frame, for driving the horizontal connecting plate to rotate during operation.

7. The rubber mixing mill for processing shoe sole rubber materials according to claim 1, characterized in that: Above the first and second rubber mixing rollers is a feeding seat for discharging rubber material; the feeding seat is provided with a feeding trough for discharging rubber material.

8. The rubber mixing mill for processing shoe sole rubber materials according to claim 7, characterized in that: Below the feeding seat is a cutting column; the cutting column is provided with a connecting groove that matches the feeding trough; a fourth drive motor for driving the cutting column to rotate is provided on one side of the cutting column.

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