Rubber material kneading device and kneading method

Abstract

The invention relates to the technical field of rubber mixing equipment, and discloses a rubber material mixing device and a rubber material mixing method. In the circulating process of a rubber material between the main mixing roller set and the auxiliary mixing roller set, the sliding guide mechanism and the follow-up scraping mechanism synchronously move in the long axis direction of the auxiliary mixing roller set, so that the rubber material falls into the main mixing roller set and moves along with the main mixing roller set; therefore, the stacking direction of the rubber materials in the main mixing roller set can be continuously guided to be changed, and the rubber materials originally in different areas in the long axis direction of the auxiliary mixing roller set can be effectively guided and mixed, so that the circulating mixing efficiency of the rubber materials between the main mixing roller set and the auxiliary mixing roller set is effectively improved; and in the moving process of the follow-up scraping mechanism, the rubber adhered to the roller is forcibly stripped through physical scraping, so that the adhesion of the rubber material on the outer side of the auxiliary mixing roller group can be reduced, and the rubber mixing effect is further ensured.

Description

Technical Field

[0001] This invention relates to the field of rubber mixing equipment, specifically to a mixing apparatus and method for rubber materials. Background Technology

[0002] The rubber material mixing equipment is one of the core equipment in the rubber industry. Existing rubber material mixing equipment is divided into open mixing mills (open mills) and closed internal mixers (internal mixers) according to their sealing method. Both use two relatively rotating rollers to shear and squeeze the rubber to achieve the initial mixing of raw rubber and compounding agents. High adhesion of rubber materials during the mixing process has long been a technical challenge. Rubber, especially uncured rubber compounds, tends to adhere to the metal surfaces of mixing equipment, leading to decreased heat transfer efficiency, increased energy consumption, and even affecting the uniformity of mixing. To address this issue, industry typically uses the addition of release agents or separating agents (such as stearic acid, paraffin wax, and silicone oil) to reduce adhesion. These additives improve release performance by forming a lubricating layer at the rubber-metal interface, reducing the contact area. However, low molecular weight additives may migrate to the rubber surface, causing difficulties in subsequent processing (such as vulcanization bonding). The introduction of these non-reactive additives disrupts the continuity of rubber molecular chains, leading to a decrease in effective crosslinking density, which significantly weakens the mechanical properties of the rubber material (such as tensile strength and tear strength), resulting in a longer mixing process and a decrease in rubber strength. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a mixing apparatus and a mixing method for rubber materials.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A rubber material mixing apparatus includes a support base with a roller frame at its top. The roller frame includes a main mixing frame and a secondary mixing frame. The main mixing frame houses a main mixing roller assembly, and the secondary mixing frame houses a secondary mixing roller assembly, a sliding guide mechanism, and a follow-up scraping mechanism. The main mixing roller assembly can perform mixing operations independently of the secondary mixing roller assembly, while the secondary mixing roller assembly can only perform mixing operations during the mixing operations of the main mixing roller assembly. During the mixing operations of the secondary mixing roller assembly, the sliding guide mechanism and the follow-up scraping mechanism can move synchronously along the long axis of the secondary mixing roller assembly. Guided by the sliding guide mechanism, an input area exists along the long axis of the secondary mixing roller assembly, and rubber material output from the main mixing roller assembly can only be conveyed to the input area of ​​the secondary mixing roller assembly. The follow-up scraping mechanism can scrape residual rubber material located outside the input area of ​​the secondary mixing roller assembly and concentrate it for conveying to the input area of ​​the secondary mixing roller assembly.

[0005] Preferably, the secondary mixing frame is disposed at the top of the primary mixing frame, the secondary mixing roller group includes a secondary driving roller and a secondary driven roller, the primary mixing roller group includes a primary driving roller and a primary driven roller; a secondary mixing gap is formed between the secondary driving roller and the secondary driven roller, a primary mixing gap is formed between the primary driving roller and the primary driven roller, and the secondary mixing gap is located directly above the primary mixing gap.

[0006] Preferably, the sliding guide mechanism includes a sliding support roller shaft, a sliding guide support, and a sliding drive screw. The sliding guide support is slidably connected to the sliding support roller shaft, and the sliding guide support is threadedly connected to the sliding drive screw. Two guide limiting rods are provided on the side of the sliding guide support away from the auxiliary mixing roller group. A sliding drive motor is provided on one side of the sliding drive screw, and the output shaft of the sliding drive motor is coaxially fixed to the sliding drive screw through a reduction gearbox.

[0007] Preferably, the follow-up scraping mechanism is disposed on the side of the auxiliary drive roller and the auxiliary driven roller near the sliding guide mechanism; the follow-up scraping mechanism includes a plurality of scraping support shafts and two follow-up scraping plates, each of the scraping support shafts passing through the two follow-up scraping plates respectively, and the side of the follow-up scraping plate near the sliding guide support is connected and fixed to the sliding guide support through a follow-up connecting rod; the side of the follow-up scraping plate near the auxiliary drive roller and the auxiliary driven roller respectively keeps in contact with the surface of the auxiliary drive roller and the auxiliary driven roller.

[0008] Preferably, the rubber material passes through the two guide limiting supports. As the rubber material moves with the sliding guide support, the input of the rubber material is adjusted to the input area of ​​the secondary mixing roller group. The two follower scrapers move synchronously with the corresponding guide limiting supports. The distance between the two follower scrapers is greater than the distance between the two guide limiting supports. After the rubber material passes between the two guide limiting supports, it is held between the two follower scrapers and enters the secondary mixing gap. During the movement, the follower scrapers can also scrape the rubber material remaining on the surface of the secondary drive roller and the secondary driven roller in the moving path, and concentrate it in the secondary mixing gap between the two follower scrapers for continued conveying.

[0009] Preferably, a residual cleaning mechanism is provided at the bottom end of the main mixing roller group. The residual cleaning mechanism includes two residual scraping units and a collection trough plate. The two residual scraping units are respectively arranged outside the main drive roller and the main driven roller. Each residual scraping unit includes a mounting shaft, a movable scraper, a scraper drive cylinder, and a drive connecting rod. The mounting shaft passes through the movable scraper. The movable end of the scraper drive cylinder is rotatably connected to the drive connecting rod. The end of the drive connecting rod away from the scraper drive cylinder is fixed to the mounting shaft.

[0010] Preferably, the minimum distance between the mounting shaft and the corresponding main drive roller and the main driven roller is greater than the maximum distance between the main drive roller and the main driven roller; the extension and retraction of the movable end of the scraper drive cylinder can drive the movable scraper to rotate around the mounting shaft through the drive linkage, adjusting the distance between the side of the movable scraper away from the mounting shaft and the corresponding main drive roller and the main driven roller; when both movable scrapers are in contact with the corresponding main drive roller and the main driven roller, the residual rubber material on the outer surface of the main drive roller and the main driven roller can be scraped off and introduced into the collection trough plate for collection under the action of gravity.

[0011] Preferably, the front of the main mixing frame is further provided with a spacing adjustment mechanism, which includes an adjustment handwheel, an adjustment gearbox, and a spacing adjustment screw. The adjustment handwheel is connected to the input end of the adjustment gearbox, one end of the spacing adjustment screw is fixed to the output end of the adjustment gearbox, and the other end of the spacing adjustment screw is threadedly connected to the spacing adjustment support of the main and driven rollers. The rotation of the adjustment handwheel can be converted into the rotation of the spacing adjustment screw by the reduction and reversal of the adjustment gearbox, which drives the lateral movement of the spacing adjustment support and drives the main and driven rollers to move, thereby adjusting the spacing between the main drive roller and the main and driven rollers.

[0012] Preferably, a main drive motor is provided on one side of the main mixing frame, and the main drive motor is poweredly connected to the main drive roller through a main transmission sprocket. The main drive roller and the main driven roller are respectively coaxially fixed with a main drive gear and a secondary drive gear at the ends away from the main drive motor. During the adjustment of the distance between the main drive roller and the main driven roller, the main drive gear and the secondary drive gear maintain gear meshing.

[0013] The method for mixing rubber materials, using the aforementioned rubber material mixing apparatus, includes the following steps: First, start the main mixing roller group, put the rubber material into the main mixing roller group, and begin the mixing operation of the main mixing roller group. After the rubber material has been circulated and mixed for a period of time in the main mixing roller group, the auxiliary mixing roller group is started. The rubber material is cut off inside the main mixing roller group, and one end of the cut-off rubber material is fed around the sliding guide mechanism to the input area of ​​the auxiliary mixing roller group. The rubber material is circulated between the main mixing roller group and the auxiliary mixing roller group for mixing until the rubber material is mixed. During the circulation of rubber material between the main mixing roll group and the auxiliary mixing roll group, the sliding guide mechanism and the follow-up scraping mechanism move synchronously along the long axis of the auxiliary mixing roll group, so that the position of the rubber material falling into the main mixing roll group moves accordingly. During the movement of the follow-up scraping mechanism, the residual rubber material located outside the input area of ​​the sub-mixing roll group is scraped off and concentrated and transported to the input area of ​​the sub-mixing roll group.

[0014] Compared with the prior art, the present invention provides a mixing apparatus and a mixing method for rubber materials, which have the following beneficial effects: 1. In this rubber material mixing device, during the circulation of rubber material between the main mixing roller group and the auxiliary mixing roller group, the sliding guide mechanism and the follower scraping mechanism move synchronously along the long axis of the auxiliary mixing roller group. This causes the position of the rubber material falling into the main mixing roller group to change accordingly, thereby continuously guiding the stacking direction of the rubber material inside the main mixing roller group to change. This effectively guides the mixing of rubber material from different areas along the long axis of the auxiliary mixing roller group, thereby improving the efficiency of the rubber material circulating and mixing between the main mixing roller group and the auxiliary mixing roller group. Furthermore, during the movement of the follower scraping mechanism, residual rubber material located outside the input area of ​​the auxiliary mixing roller group is scraped and concentrated and transported to the input area of ​​the auxiliary mixing roller group. By physically scraping and forcibly peeling off the rubber adhering to the rollers, the adhesion of rubber material on the outside of the auxiliary mixing roller group can be reduced without introducing new components, thus ensuring the effect of rubber mixing.

[0015] 2. In this rubber material mixing device, as the rubber material passes through two guide limiting supports and moves with the sliding guide support, it remains between two follower scraper plates and enters the secondary mixing gap. The rubber material is adjusted to be input into the input area of ​​the secondary mixing roller group. During the movement of the follower scraper plates, they can also scrape the rubber material remaining on the surface of the secondary drive roller and the secondary driven roller in the moving path, and concentrate it in the secondary mixing gap between the two follower scraper plates for continued conveying. This effectively guides the rubber material while preventing the rubber material from adhering to the secondary drive roller and the secondary driven roller, thus ensuring the effective mixing efficiency of the rubber material.

[0016] 3. In the rubber material mixing device, after the mixing process is completed, the movable end of the scraper drive cylinder extends to its longest state, and the side of the movable scraper away from the mounting shaft is respectively attached to the corresponding main drive roller and the main driven roller. Through the action of the movable scraper, the rubber material remaining on the outer surface of the main drive roller and the main driven roller can be scraped off and introduced into the collection trough plate for collection under the action of gravity, thereby ensuring the detachment and collection of the rubber material.

[0017] 4. The rubber material mixing device converts the input rotation into the rotation of the spacing adjustment screw by adjusting the handwheel, which in turn drives the lateral movement of the spacing adjustment support, thereby moving the main and driven rollers. This adjusts the spacing between the main drive roller and the main driven roller, thus gradually changing the mixing intensity. The main drive motor is powered by the main drive roller via the main transmission sprocket, and the main drive roller and the main driven roller are powered by the main drive gear and the auxiliary drive gear. During the adjustment of the spacing between the main drive roller and the main driven roller, the main drive gear and the auxiliary drive gear maintain gear meshing, causing the main drive roller and the main driven roller to rotate in opposite directions. This effectively feeds the rubber material into the gap between the main drive roller and the main driven roller, effectively carrying out the mixing process. Attached Figure Description

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the rubber material mixing device of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of the rubber material mixing device of the present invention; Figure 3 This is the third three-dimensional structural schematic diagram of the rubber material mixing device of the present invention; Figure 4 This is one of the schematic diagrams of the internal structure of the main mixing frame of the rubber material mixing device of the present invention; Figure 5 This is a second schematic diagram of the internal structure of the main mixing frame of the rubber material mixing device of the present invention. Figure 6 This is one of the schematic diagrams of the internal assembly structure of the main mixing frame of the rubber material mixing device of the present invention; Figure 7 This is a second schematic diagram of the internal assembly structure of the main mixing frame of the rubber material mixing device of the present invention. Figure 8 This is one of the schematic diagrams of the internal structure of the secondary mixing frame of the rubber material mixing device of the present invention; Figure 9 This is a second schematic diagram of the internal structure of the secondary mixing frame of the rubber material mixing device of the present invention; Figure 10This is the third schematic diagram of the internal structure of the secondary mixing frame of the rubber material mixing device of the present invention.

[0019] In the diagram: 1. Support base; 2. Roller frame; 21. Main mixing frame; 211. Main drive motor; 212. Main transmission sprocket; 22. Secondary mixing frame; 3. Main mixing roller group; 31. Main drive roller; 311. Main drive gear; 32. Main driven roller; 321. Secondary drive gear; 322. Spacing adjustment support; 4. Secondary mixing roller group; 41. Secondary drive roller; 42. Secondary driven roller; 5. Sliding guide mechanism; 51. Sliding support roller shaft; 52. Sliding guide support; 5 3. Sliding drive screw; 54. Guide limit support rod; 55. Sliding drive motor; 6. Follow-up scraping mechanism; 61. Scraping support shaft; 62. Follow-up scraping plate; 63. Follow-up connecting rod; 7. Residual cleaning mechanism; 71. Residual scraping unit; 711. Mounting shaft; 712. Movable scraper; 713. Scraper drive cylinder; 714. Drive connecting rod; 72. Collection trough plate; 8. Spacing adjustment mechanism; 81. Adjusting handwheel; 82. Adjusting gearbox; 83. Spacing adjustment screw. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0021] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a rubber material mixing apparatus and a mixing method.

[0022] Example 1: Please see Figures 1-10A rubber material mixing apparatus includes a support base 1, with a roller frame 2 mounted on top of the support base 1. The roller frame 2 includes a main mixing frame 21 and a secondary mixing frame 22. The main mixing frame 21 houses a main mixing roller group 3, and the secondary mixing frame 22 houses a secondary mixing roller group 4, a sliding guide mechanism 5, and a follow-up scraping mechanism 6. The main mixing roller group 3 can perform mixing operations independently of the secondary mixing roller group 4, while the secondary mixing roller group 4 can only perform mixing operations during the mixing operation of the main mixing roller group 3. During the mixing operation of the sub-mixing roller group 4, the sliding guide mechanism 5 and the follower scraping mechanism 6 can move synchronously along the long axis of the sub-mixing roller group 4. Under the guidance of the sliding guide mechanism 5, there is an input area along the long axis of the sub-mixing roller group 4. The rubber material output from the main mixing roller group 3 can only be conveyed to the input area of ​​the sub-mixing roller group 4. The follower scraping mechanism 6 can scrape the residual rubber material located outside the input area of ​​the sub-mixing roller group 4 and concentrate it to be conveyed to the input area of ​​the sub-mixing roller group 4.

[0023] The secondary mixing frame 22 is located at the top of the main mixing frame 21. The secondary mixing roller group 4 includes a secondary driving roller 41 and a secondary driven roller 42. The main mixing roller group 3 includes a main driving roller 31 and a main driven roller 32. A secondary mixing gap is formed between the secondary driving roller 41 and the secondary driven roller 42. A main mixing gap is formed between the main driving roller 31 and the main driven roller 32. The secondary mixing gap is located directly above the main mixing gap.

[0024] In practical use, the relative positions between the auxiliary drive roller 41 and the auxiliary driven roller 42 can be adjusted, with the auxiliary driven roller 42 positioned obliquely above the side of the auxiliary drive roller 41 away from the sliding guide mechanism 5. This allows for better filling of the rubber material into the secondary mixing gap between the auxiliary drive roller 41 and the auxiliary driven roller 42 from the front. During use, first, the main drive roller 31 and the main driven roller 32 of the main mixing roller group 3 are started. Then, the rubber material is placed into the main mixing gap of the main mixing roller group 3, and the mixing operation of the main mixing roller group 3 begins. While continuously circulating between the main drive roller 31 and the driven roller 32, the distance between them is gradually reduced, allowing for gradual mixing of the main mixing roller group 3. After the rubber material has been circulated and mixed in the main mixing roller group 3 for a period of time, the auxiliary drive roller 41 and auxiliary driven roller 42 of the auxiliary mixing roller group 4 are activated. Then, the rubber material inside the main mixing roller group 3 is cut off, and one end of the cut rubber material is fed into the input area of ​​the auxiliary mixing roller group 4, bypassing the sliding guide mechanism 5. The rubber material circulates between the main mixing roller group 3 and the auxiliary mixing roller group 4 for mixing until the rubber material is fully mixed. During the circulation of the rubber material between the main mixing roller group 3 and the auxiliary mixing roller group 4, the sliding guide mechanism 5 and the follow-up scraping mechanism 6 move synchronously along the long axis of the auxiliary mixing roller group 4. The rubber material falls into the main mixing roller group 3 and moves accordingly, continuously guiding the stacking direction of the rubber material inside the main mixing roller group 3 to change, thereby effectively separating the different areas that were originally along the long axis of the auxiliary mixing roller group 4. The rubber material in the field is guided and mixed, which can effectively improve the efficiency of the rubber material circulating and mixing between the main mixing roller group 3 and the secondary mixing roller group 4. During the movement of the follow-up scraping mechanism 6, the residual rubber material located outside the input area of ​​the secondary mixing roller group 4 is scraped and concentrated and transported to the input area of ​​the secondary mixing roller group 4. By physically scraping and forcibly peeling off the rubber adhering to the roller, the adhesion of rubber material on the outside of the secondary mixing roller group 4 is reduced without introducing new components, thereby ensuring the effect of rubber mixing.

[0025] Example 2: Please see Figures 1-10 The difference from the above embodiment is that the sliding guide mechanism 5 includes a sliding support roller shaft 51, a sliding guide support 52 and a sliding drive screw 53. The sliding guide support 52 is slidably connected to the sliding support roller shaft 51, and the sliding guide support 52 is threadedly connected to the sliding drive screw 53. Two guide limit supports 54 are provided on the side of the sliding guide support 52 away from the auxiliary mixing roller group 4. A sliding drive motor 55 is provided on one side of the sliding drive screw 53, and the output shaft of the sliding drive motor 55 is coaxially fixed to the sliding drive screw 53 through a reduction gearbox.

[0026] The follower scraping mechanism 6 is located on the side of the auxiliary drive roller 41 and the auxiliary driven roller 42 near the sliding guide mechanism 5. The follower scraping mechanism 6 includes several scraping support shafts 61 and two follower scraping plates 62. Each scraping support shaft 61 passes through the two follower scraping plates 62. The side of the follower scraping plate 62 near the sliding guide support 52 is connected and fixed to the sliding guide support 52 through a follower connecting rod 63. The side of the follower scraping plate 62 near the auxiliary drive roller 41 and the auxiliary driven roller 42 is in contact with the surface of the auxiliary drive roller 41 and the auxiliary driven roller 42, respectively.

[0027] The rubber material passes through the two guide limiting supports 54. As the rubber material moves with the sliding guide support 52, the rubber material is adjusted to be input into the input area of ​​the secondary mixing roller group 4. The two follower scraper plates 62 move synchronously with the corresponding guide limiting supports 54. The distance between the two follower scraper plates 62 is greater than the distance between the two guide limiting supports 54. After the rubber material passes between the two guide limiting supports 54, it is held between the two follower scraper plates 62 and enters the secondary mixing gap. During the movement, the follower scraper plates 62 can also scrape the rubber material remaining on the surface of the secondary drive roller 41 and the secondary driven roller 42 in the moving path, and concentrate it in the secondary mixing gap between the two follower scraper plates 62 for continued conveying.

[0028] In use, since the output shaft of the sliding drive motor 55 is coaxially fixed with the sliding drive screw 53 through the reduction gearbox, the sliding drive motor 55 outputs power to drive the sliding drive screw 53 to rotate. Then, through the threaded connection between the sliding drive screw 53 and the sliding guide support 52, the sliding guide support 52 is driven to move along the sliding support roller shaft 51 under the guidance of the sliding support roller shaft 51. Simultaneously, through the connection of the follower connecting rod 63, two follower scraping plates 62 are driven to move with the sliding guide support 52. Furthermore, the side of the follower scraping plate 62 closest to the auxiliary drive roller 41 and the auxiliary driven roller 42 respectively maintains contact with the surfaces of the auxiliary drive roller 41 and the auxiliary driven roller 42, thereby enabling the auxiliary drive roller 41 and the auxiliary driven roller 42 to be scraped. The rubber material on the surface is conveyed between the two follower scraper plates 62. As the rubber material passes through the two guide limit supports 54 and moves with the sliding guide support 52, it is kept between the two follower scraper plates 62 and enters the secondary mixing gap. The rubber material is adjusted to be input into the input area of ​​the secondary mixing roller group 4. During the movement of the follower scraper plates 62, they can also scrape the rubber material remaining on the surface of the secondary drive roller 41 and the secondary driven roller 42 in the moving path, and concentrate it in the secondary mixing gap between the two follower scraper plates 62 for continued conveying. This can effectively guide the rubber material while avoiding the adhesion between the rubber material and the secondary drive roller 41 and the secondary driven roller 42, so that the rubber material can be effectively guided and mixed, thereby effectively ensuring the mixing efficiency of the rubber material.

[0029] Example 3: Please see Figures 1-10 The difference from the above embodiment is that a residual cleaning mechanism 7 is provided at the bottom of the main mixing roller group 3. The residual cleaning mechanism 7 includes two residual scraping units 71 and a collection trough plate 72. The two residual scraping units 71 are respectively arranged on the outside of the main drive roller 31 and the main driven roller 32. Each residual scraping unit 71 includes a mounting shaft 711, a movable scraper 712, a scraper drive cylinder 713 and a drive connecting rod 714. The mounting shaft 711 passes through the movable scraper 712. The movable end of the scraper drive cylinder 713 is rotatably connected to the drive connecting rod 714. The end of the drive connecting rod 714 away from the scraper drive cylinder 713 is fixed to the mounting shaft 711.

[0030] The minimum distance between the mounting shaft 711 and the corresponding main drive roller 31 and main driven roller 32 is greater than the maximum distance between the main drive roller 31 and main driven roller 32. The extension and retraction of the movable end of the scraper drive cylinder 713 can drive the movable scraper 712 to rotate around the mounting shaft 711 through the drive connecting rod 714, adjusting the distance between the side of the movable scraper 712 away from the mounting shaft 711 and the corresponding main drive roller 31 and main driven roller 32. When both movable scrapers 712 are in contact with the corresponding main drive roller 31 and main driven roller 32, the rubber material remaining on the outer surface of the main drive roller 31 and main driven roller 32 can be scraped off and introduced into the collection trough plate 72 for collection under the action of gravity.

[0031] During use, when the mixing process occurs between the main drive roller 31 and the driven roller 32, the movable end of the scraper drive cylinder 713 is shortened to its shortest state, adjusting the distance between the side of the movable scraper 712 away from the mounting shaft 711 and the corresponding main drive roller 31 and driven roller 32 to their maximum. Since the minimum distance between the mounting shaft 711 and the corresponding main drive roller 31 and driven roller 32 is greater than the maximum distance between the main drive roller 31 and driven roller 32, the rubber material will not pass through the area of ​​the residual scraping unit 71 during the mixing process between the main drive roller 31 and driven roller 32, ensuring that the residual scraping unit 71... It will not affect the mixing process; and after the mixing process is completed, the movable end of the scraper drive cylinder 713 extends to its longest state, and the side of the movable scraper 712 away from the mounting shaft 711 is respectively attached to the corresponding main drive roller 31 and main driven roller 32. Through the action of the movable scraper 712 (the rubber material scraped by the two movable scrapers 712 exists between the two movable scrapers 712), the rubber material remaining on the outer surface of the main drive roller 31 and main driven roller 32 will be scraped off and introduced into the collection trough plate 72 for collection under the action of gravity, thereby ensuring the separation and collection of rubber material and ensuring the output integrity rate of the mixed rubber material.

[0032] Example 4: Please see Figures 1-10 The difference from the above embodiment is that the main mixing frame 21 is also provided with a spacing adjustment mechanism 8 on the front. The spacing adjustment mechanism 8 includes an adjustment handwheel 81, an adjustment gearbox 82, and a spacing adjustment screw 83. The adjustment handwheel 81 is connected to the input end of the adjustment gearbox 82, one end of the spacing adjustment screw 83 is fixed to the output end of the adjustment gearbox 82, and the other end of the spacing adjustment screw 83 is threadedly connected to the spacing adjustment support 322 of the main and driven rollers 32. The rotation of the adjustment handwheel 81 can be converted into the rotation of the spacing adjustment screw 83 after the adjustment gearbox 82 is reduced and reversed, and drives the spacing adjustment support 322 to move laterally, thereby moving the main and driven rollers 32 and adjusting the spacing between the main drive roller 31 and the main and driven rollers 32.

[0033] A main drive motor 211 is provided on one side of the main mixing frame 21. The main drive motor 211 is poweredly connected to the main drive roller 31 through the main transmission sprocket 212. The main drive roller 31 and the main driven roller 32 are respectively coaxially fixed with a main drive gear 311 and a secondary drive gear 321 at the ends away from the main drive motor 211. During the process of adjusting the distance between the main drive roller 31 and the main driven roller 32, the main drive gear 311 and the secondary drive gear 321 maintain gear meshing.

[0034] In use, by adjusting the handwheel 81, the input rotation is converted into the rotation of the pitch adjustment screw 83 after the reduction and reversal of the gearbox 82. This drives the lateral movement of the pitch adjustment support 322, which in turn moves the main and driven rollers 32, adjusting the gap between the main drive roller 31 and the main and driven rollers 32. This gradually changes the mixing intensity (the pressure of the main drive roller 31 and the main and driven rollers 32 on the passing rubber material gradually increases as the gap decreases). The main drive motor 211 and the main drive roller 31... The main drive roller 31 and the driven roller 32 are powered by the main drive sprocket 212 and powered by the main drive gear 311 and the auxiliary drive gear 321. During the adjustment of the gap between the main drive roller 31 and the driven roller 32, the main drive gear 311 and the auxiliary drive gear 321 maintain gear meshing, so that the main drive roller 31 and the driven roller 32 rotate in opposite directions, thereby effectively feeding the rubber material into the gap between the main drive roller 31 and the driven roller 32, and effectively carrying out the mixing process.

[0035] Example 5: A method for mixing rubber materials, characterized by using a rubber material mixing apparatus as described in any one of Examples 1-4, comprising the following steps: First, start the main mixing roller group 3, put the rubber material into the main mixing roller group 3, and start the mixing operation of the main mixing roller group 3. After the rubber material has been mixed in the main mixing roller group 3 for a period of time, the auxiliary mixing roller group 4 is started. The rubber material is cut off inside the main mixing roller group 3, and one end of the cut rubber material is fed into the input area of ​​the auxiliary mixing roller group 4 by bypassing the sliding guide mechanism 5. The rubber material is circulated between the main mixing roller group 3 and the auxiliary mixing roller group 4 for mixing until the rubber material is mixed. During the circulation of the rubber material between the main mixing roll group 3 and the auxiliary mixing roll group 4, the sliding guide mechanism 5 and the follow-up scraping mechanism 6 move synchronously along the long axis of the auxiliary mixing roll group 4, and the rubber material falls to the position inside the main mixing roll group 3. During the movement of the follow-up scraping mechanism 6, the residual rubber material located outside the input area of ​​the sub-mixing roller group 4 is scraped off and concentrated and transported to the input area of ​​the sub-mixing roller group 4.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber material mixing apparatus, comprising a support base (1), wherein a roller frame (2) is provided at the top of the support base (1), characterized in that: The roller frame (2) includes a main mixing frame (21) and a secondary mixing frame (22). The main mixing frame (21) is equipped with a main mixing roller group (3), and the secondary mixing frame (22) is equipped with a secondary mixing roller group (4), a sliding guide mechanism (5), and a follow-up scraping mechanism (6). The main mixing roller group (3) can perform mixing operations independently of the auxiliary mixing roller group (4), while the auxiliary mixing roller group (4) can only perform mixing operations during the process of the main mixing roller group (3) performing mixing operations. During the mixing operation performed by the sub-mixing roller group (4), the sliding guide mechanism (5) and the follow-up scraping mechanism (6) can move synchronously along the long axis of the sub-mixing roller group (4); Under the guidance of the sliding guide mechanism (5), there is an input area along the long axis of the sub-mixing roller group (4), and the rubber material output from the main mixing roller group (3) can only be conveyed to the input area of ​​the sub-mixing roller group (4). The follow-up scraping mechanism (6) can scrape off the residual rubber material located outside the input area of ​​the sub-mixing roller group (4) and concentrate it to be transported to the input area of ​​the sub-mixing roller group (4).

2. The rubber material mixing apparatus according to claim 1, characterized in that: The secondary mixing frame (22) is located at the top of the main mixing frame (21). The secondary mixing roller group (4) includes a secondary drive roller (41) and a secondary driven roller (42). The main mixing roller group (3) includes a main drive roller (31) and a main driven roller (32). A secondary mixing gap is formed between the secondary drive roller (41) and the secondary driven roller (42), and a primary mixing gap is formed between the primary drive roller (31) and the primary driven roller (32). The secondary mixing gap is located directly above the primary mixing gap.

3. The rubber material mixing apparatus according to claim 2, characterized in that: The sliding guide mechanism (5) includes a sliding support roller shaft (51), a sliding guide support (52) and a sliding drive screw (53). The sliding guide support (52) is slidably connected to the sliding support roller shaft (51), and the sliding guide support (52) is threadedly connected to the sliding drive screw (53). Two guide limit rods (54) are provided on the side of the sliding guide support (52) away from the sub-mixing roller group (4). A sliding drive motor (55) is provided on one side of the sliding drive screw (53), and the output shaft of the sliding drive motor (55) is coaxially fixed with the sliding drive screw (53) through a reduction gearbox.

4. The rubber material mixing apparatus according to claim 3, characterized in that: The follow-up scraping mechanism (6) is located on the side of the auxiliary drive roller (41) and the auxiliary driven roller (42) near the sliding guide mechanism (5); The follow-up scraping mechanism (6) includes several scraping support shafts (61) and two follow-up scraping plates (62). Each of the scraping support shafts (61) passes through the two follow-up scraping plates (62). The side of the follow-up scraping plate (62) near the sliding guide support (52) is connected and fixed to the sliding guide support (52) through a follow-up connecting rod (63). The side of the follower scraper (62) closest to the auxiliary drive roller (41) and the auxiliary driven roller (42) is in contact with the surfaces of the auxiliary drive roller (41) and the auxiliary driven roller (42), respectively.

5. The rubber material mixing apparatus according to claim 4, characterized in that: The rubber material passes through the two guide limiting supports (54), and as the rubber material moves with the sliding guide support (52), the rubber material is adjusted to be input into the input area of ​​the auxiliary mixing roller group (4); The two follower scraping plates (62) move synchronously with the corresponding guide limiting support rods (54), and the distance between the two follower scraping plates (62) is greater than the distance between the two guide limiting support rods (54). After the rubber material passes between the two guide limiting supports (54), it is held between the two follower scrapers (62) and enters the secondary mixing gap. During the movement, the follower scraper (62) can also scrape the rubber material remaining on the surface of the secondary drive roller (41) and the secondary driven roller (42) in the moving path, and concentrate it in the secondary mixing gap between the two follower scrapers (62) for continued conveying.

6. The rubber material mixing apparatus according to claim 2, characterized in that: The bottom end of the main mixing roller group (3) is provided with a residual cleaning mechanism (7). The residual cleaning mechanism (7) includes two residual scraping units (71) and a collection trough plate (72). The two residual scraping units (71) are respectively located on the outside of the main drive roller (31) and the main driven roller (32). Each residual scraping unit (71) includes a mounting shaft (711), a movable scraper (712), a scraper drive cylinder (713), and a drive linkage (714). The mounting shaft (711) passes through the movable scraper (712). The movable end of the scraper drive cylinder (713) is rotatably connected to the drive linkage (714). The end of the drive linkage (714) away from the scraper drive cylinder (713) is fixed to the mounting shaft (711).

7. The rubber material mixing apparatus according to claim 6, characterized in that: The minimum distance between the mounting shaft (711) and the corresponding main drive roller (31) and the main driven roller (32) is greater than the maximum distance between the main drive roller (31) and the main driven roller (32); The extension and retraction of the movable end of the scraper drive cylinder (713) can drive the movable scraper (712) to rotate around the mounting shaft (711) through the drive linkage (714), adjusting the distance between the side of the movable scraper (712) away from the mounting shaft (711) and the corresponding main drive roller (31) and the main driven roller (32). When both of the movable scrapers (712) are in contact with the corresponding main drive roller (31) and the main driven roller (32), the rubber material remaining on the outer surface of the main drive roller (31) and the main driven roller (32) can be scraped off and introduced into the collection trough plate (72) for collection under the action of gravity.

8. The rubber material mixing apparatus according to claim 2, characterized in that: The main mixing frame (21) is also provided with a spacing adjustment mechanism (8) on the front side. The spacing adjustment mechanism (8) includes an adjustment handwheel (81), an adjustment gearbox (82) and a spacing adjustment screw (83). The adjustment handwheel (81) is connected to the input end of the adjustment gearbox (82). One end of the spacing adjustment screw (83) is fixed to the output end of the adjustment gearbox (82). The other end of the spacing adjustment screw (83) is threadedly connected to the spacing adjustment support (322) of the main driven roller (32). The rotation of the adjustment handwheel (81) can be converted into the rotation of the spacing adjustment screw (83) after the adjustment reduction gearbox (82) is reduced and reversed, and the spacing adjustment support (322) is driven to move laterally, thereby driving the main and driven rollers (32) to move, and adjusting the spacing between the main drive roller (31) and the main and driven rollers (32).

9. The rubber material mixing apparatus according to claim 8, characterized in that: A main drive motor (211) is provided on one side of the main mixing frame (21). The main drive motor (211) and the main drive roller (31) are connected by a main transmission sprocket (212). The main drive roller (31) and the main driven roller (32) are respectively coaxially fixed with a main drive gear (311) and a secondary drive gear (321) at the ends away from the main drive motor (211). During the adjustment of the distance between the main drive roller (31) and the main driven roller (32), the main drive gear (311) and the auxiliary drive gear (321) maintain gear meshing.

10. A method for mixing rubber materials, characterized in that, The rubber material mixing apparatus used as described in any one of claims 1-9 includes the following steps: First, start the main mixing roller group (3), put the rubber material into the main mixing roller group (3), and start the mixing operation of the main mixing roller group (3); After the rubber material has been mixed in the main mixing roller group (3) for a period of time, the auxiliary mixing roller group (4) is started. The rubber material is cut off inside the main mixing roller group (3), and one end of the cut rubber material is fed into the input area of ​​the auxiliary mixing roller group (4) by passing around the sliding guide mechanism (5). The rubber material is circulated between the main mixing roller group (3) and the auxiliary mixing roller group (4) for mixing until the rubber material is mixed. During the process of the rubber material circulating between the main mixing roller group (3) and the auxiliary mixing roller group (4), the sliding guide mechanism (5) and the follow-up scraping mechanism (6) move synchronously along the long axis of the auxiliary mixing roller group (4), and the rubber material falls to the position inside the main mixing roller group (3) and moves. During the movement of the follow-up scraping mechanism (6), the residual rubber material located outside the input area of ​​the sub-mixing roller group (4) is scraped off and concentrated and transported to the input area of ​​the sub-mixing roller group (4).

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