A rubber mixing mill's turnover mechanism

Abstract

This utility model relates to the technical field of rubber mixing equipment, specifically a rubber turning mechanism for a rubber open mill, including a machine base and a scraping mechanism. A mounting frame is provided on the machine base, and a pressure roller, a drive roller, and a driven roller are rotatably connected to the mounting frame. The scraping mechanism includes a mounting plate on the mounting frame, a fixed block on the mounting plate, a threaded rod threadedly connected to the fixed block, two fixed cylinders symmetrically distributed on the fixed block, a spring inside the fixed cylinders, a telescopic rod on the spring, a scraper on the telescopic rod, a rotating connector on the scraper, and a handle on the threaded rod. The threaded rod is rotatably connected to the rotating connector, and the telescopic rod is slidably connected to the fixed cylinders. This utility model can precisely adjust and limit the position of the scraper against the roller surface to ensure the quality of scraping, and also facilitates the disassembly and replacement of the scraper.

Description

Technical Field

[0001] This utility model relates to the field of rubber mixing equipment technology, and in particular to a rubber turning mechanism for a rubber open mill. Background Technology

[0002] The core structure of an open mill consists of a pair of parallel, hollow rollers. These two rollers, with the same diameter, employ an internal drilling design for temperature control. During operation, the two rollers rotate in opposite directions at different speeds, forcibly drawing the rubber raw material into the roller gap through asymmetrical motion. As the material passes through the gradually narrowing gap, the high shear force field generated by the velocity gradient causes plastic deformation of the rubber compound, thereby achieving polymer plasticization or mixing. Due to its strong mechanical shearing action and intuitive process controllability, this equipment has become the most basic mixing equipment in the rubber industry.

[0003] Chinese Patent CN204235737U discloses a rubber open mixing mill, including a base with supports at both ends. A front roller and a rear roller are rotatably mounted on the supports, and a turning roller is rotatably mounted on the supports above the front roller. The supports also have a drive mechanism for driving the front and rear rollers. Several scrapers are mounted on the supports, and the scrapers are in contact with the rear roller and the turning roller. Several fixed shafts are mounted on the supports, and the scrapers are sleeved on the fixed shafts. Each fixed shaft is fitted with a torsion spring, which has two legs. One leg of the torsion spring is connected to the scraper, and the other end is connected to the fixed shaft. The torsion spring is in a compressed state under normal conditions. A collecting device is provided on the back of the scraper. By setting the torsion spring between the fixed shaft and the scraper, it is ensured that the scraper is always in contact with the turning roller and the rear roller.

[0004] However, the above technical solution has the following shortcomings: Although the device can achieve a good scraping effect on the roller through the scraper, the scraper needs to be disassembled and a new one installed after a long period of use. During installation, it is not easy to adjust the position of the scraper and the roller surface, which can easily affect the quality of scraping. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a rubber turning mechanism for a rubber open mill, which can precisely adjust and limit the contact position between the scraper and the roller surface to ensure the quality of the scraped material, while also facilitating the disassembly and replacement of the scraper.

[0006] The present invention relates to a rubber turning mechanism for a rubber open mill, comprising a base and a scraping mechanism. A mounting frame is provided on the base, and a pressure roller, a drive roller, and a driven roller are rotatably connected to the mounting frame. The scraping mechanism includes a mounting plate on the mounting frame, a fixed block on the mounting plate, a threaded rod threadedly connected to the fixed block, two fixed cylinders symmetrically distributed on the fixed block, a spring inside the fixed cylinders, a telescopic rod on the spring, a scraper on the telescopic rod, a rotating connector on the scraper, and a handle on the threaded rod. The threaded rod is rotatably connected to the rotating connector, and the telescopic rod is slidably connected to the fixed cylinders.

[0007] Preferably, the mounting frame is provided with a support, and a motor is provided on the support, the motor being connected to the drive roller.

[0008] Preferably, an adjusting rod is rotatably connected to the mounting frame, and two horizontally distributed fixed rods are provided on the mounting frame. A movable seat is slidably connected to the fixed rods, and two inclined flip-up rods are provided on the movable seat.

[0009] Preferably, the mounting frame is provided with horizontally distributed push cylinders, the movable seat is provided with connecting blocks, the push cylinders and connecting blocks are driven to connect, and the mounting frame is provided with guide plates.

[0010] Preferably, two bolts are provided through and abutting on the mounting plate, and the bolts are threaded onto the mounting bracket.

[0011] Preferably, the telescopic rod is provided with four sliders arranged in a circular array, and the sliders are slidably disposed inside the fixed cylinder.

[0012] Preferably, the fixing block is provided with an extension cylinder, and the threaded rod and the extension cylinder are threaded together.

[0013] Preferably, the mounting frame is provided with a material holding assembly, which includes a collection box, a docking block provided on the mounting frame, a positioning block provided on the collection box, and a pin inserted into the docking block and passing through the positioning block; the docking block is provided with a positioning groove for the positioning block to be embedded in, and the scraper is provided with an inclined plate.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] This utility model, through its scraping mechanism, not only scrapes the roller conveying the adhesive material to prevent the material from falling into the machine body, but also allows for convenient installation and disassembly of the scraping mechanism. This facilitates replacement of the scraper after prolonged use, improving the ease of use of the mechanism. Furthermore, when installing the scraper, the contact position between the scraper and the roller surface can be precisely adjusted to ensure the stability of the scraper and thus guarantee the scraping effect, demonstrating its excellent practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an isometric schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the scraping mechanism of this utility model.

[0020] Reference numerals: 1. Base; 2. Mounting frame; 3. Pressure roller; 4. Driven roller; 5. Driven roller; 6. Support; 7. Motor; 8. Adjusting rod; 9. Fixing rod; 10. Moving seat; 11. Glue-turning rod; 12. Push cylinder; 13. Connecting block; 14. Guide plate; 15. Mounting plate; 16. Fixing block; 17. Bolt; 18. Threaded rod; 19. Extension cylinder; 20. Handle; 21. Rotary connector; 22. Scraper; 23. Fixing cylinder; 24. Spring; 25. Telescopic rod; 26. Slider; 27. Inclined plate; 28. Collection box; 29. ​​Connecting block; 30. Positioning block; 31. Pin. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-4 As shown in the figure, the rubber turning mechanism of the rubber open mill proposed in this embodiment includes a base 1 and a scraping mechanism; a mounting frame 2 is provided on the base 1, and a pressure roller 3, a driving roller 4 and a driven roller 5 are rotatably connected on the mounting frame 2; a support 6 is provided on the mounting frame 2, and a motor 7 is provided on the support 6. The motor 7 is drivenly connected to the driving roller 4; an adjusting rod 8 is rotatably connected on the mounting frame 2; two horizontally distributed fixed rods 9 are provided on the mounting frame 2, and a movable seat 10 is slidably connected to the fixed rods 9; two inclined turning rods 11 are provided on the movable seat 10; a horizontally distributed push cylinder 12 is provided on the mounting frame 2; a connecting block 13 is provided on the movable seat 10, and the push cylinder 12 and the connecting block 13 are drivenly connected; a guide plate 14 is provided on the mounting frame 2; the number of pressure rollers 3 is two and they rotate relative to each other under the action of the driving structure.

[0023] The scraping mechanism includes a mounting plate 15 mounted on the mounting frame 2, a fixing block 16 mounted on the mounting plate 15, a threaded rod 18 threadedly connected to the fixing block 16, two fixing cylinders 23 symmetrically distributed on the fixing block 16, a spring 24 inside the fixing cylinder 23, a telescopic rod 25 mounted on the spring 24, a scraper 22 mounted on the telescopic rod 25, a rotating connector 21 mounted on the scraper 22, and a handle 20 mounted on the threaded rod 18; the threaded rod 18 is rotatably connected to the rotating connector 21, the telescopic rod 25 is slidably connected to the fixing cylinder 23, and two bolts 17 are threadedly connected to the mounting frame 2, which are through and abut against the mounting plate 15.

[0024] In this embodiment, during the rubber turning process, the driving pressure roller 3 and the active roller 4 rotate to convey the rubber material. The motor 7 drives the active roller 4 to rotate, which, together with the driven roller 5, squeezes the rubber material and reshapes it. The adjusting rod 8 is used to keep the rubber material relatively flat during conveying. During the conveying process, the push cylinder 12 is activated to drive the connecting block 13 to move horizontally back and forth. The connecting block 13 drives the moving seat 10 to move, thereby causing the rubber turning rod 11 to turn the rubber material. Finally, the rubber material falls back between the two pressure rollers 3 through the guide plate 14 and continues to turn. During this process, the scraper 22 scrapes the two sides of the roller surface of the active roller 4 to ensure the equipment... The operation is safe and stable, and scraping mechanisms are also installed on the sides of the roller surfaces of the pressure roller 3 and driven roller 5 for scraping. When installing the scraper, first, the bolt 17 is inserted through the mounting plate 15 and screwed into the mounting bracket 2. Then, the threaded rod 18 is rotated through the handle 20. Under the guidance of the telescopic rod 25, the threaded rod 18 drives the scraper 22 to move through the rotational abutment action of the rotating connector 21. At the same time, the telescopic rod 25 moves with the scraper 22 through the tension spring 24 until the scraper 22 just contacts the roller surface, thus completing the installation of the scraper 22. This not only makes the operation simple and convenient, but also facilitates the replacement of the scraper 22, improving the convenience of the mechanism.

[0025] It should be noted that the threaded part of the threaded rod 18 adopts a larger thread profile angle, which increases the local contact pressure and enhances the frictional resistance to achieve self-locking, so as to prevent the scraper 22 from disengaging from the roller surface, and the spring 24 is always in a compressed state.

[0026] Example 2

[0027] like Figure 4As shown in this embodiment, the rubber turning mechanism of the rubber open mill is different from that of Embodiment 1. In this embodiment, four sliders 26 arranged in a circular array are provided on the telescopic rod 25. The sliders 26 are slidably disposed inside the fixed cylinder 23. The sliders 26 guide the movement of the telescopic rod 25, which not only ensures the straightness of the scraper 22 when it moves, but also avoids the bending and twisting of the spring 24, thus ensuring the service life of the spring 24.

[0028] An extension cylinder 19 is provided on the fixing block 16. The threaded rod 18 and the extension cylinder 19 are threadedly connected. The extension cylinder 19 is used to increase the length of the threaded part of the threaded rod 18 to improve the stability of the threaded rod 18, thereby ensuring the stability of the scraper 22.

[0029] Example 3

[0030] like Figure 3 As shown, this embodiment proposes a rubber turning mechanism for a rubber open mill. Compared to Embodiment 1, in this embodiment, the mounting frame 2 is equipped with a material holding assembly, which includes a collection box 28, a docking block 29 mounted on the mounting frame 2, a positioning block 30 mounted on the collection box 28, and a pin 31 inserted into the docking block 29 and passing through the positioning block 30. The docking block 29 is provided with a positioning groove for the positioning block 30 to be embedded in, and the scraper 22 is provided with an inclined plate 27.

[0031] In this embodiment, after the scraper 22 scrapes off the edge adhesive, it will fall into the inside of the collection box 28 along the inclined plate 27, avoiding the disadvantage of the adhesive scattering into the gaps of the machine body. When it is necessary to clean the collection box 28, first pull out the pin 31 from the inside of the docking block 29 and the positioning block 30, and then take out the positioning block 30 from the docking block 29. The operation is simple and convenient.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A rubber turning mechanism for a rubber open mill, characterized in that, include: A base (1) is provided with a mounting frame (2), and a pressure roller (3), a drive roller (4) and a driven roller (5) are rotatably connected to the mounting frame (2). The scraping mechanism includes a mounting plate (15) on the mounting frame (2), a fixing block (16) on the mounting plate (15), a threaded rod (18) threadedly connected to the fixing block (16), two fixing cylinders (23) symmetrically distributed on the fixing block (16), a spring (24) inside the fixing cylinder (23), a telescopic rod (25) on the spring (24), a scraper (22) on the telescopic rod (25), a rotating connector (21) on the scraper (22), and a handle (20) on the threaded rod (18); the threaded rod (18) is rotatably connected to the rotating connector (21), and the telescopic rod (25) is slidably connected to the fixing cylinder (23).

2. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, The mounting frame (2) is provided with a support (6), and a motor (7) is provided on the support (6). The motor (7) is connected to the drive roller (4).

3. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, An adjusting rod (8) is rotatably connected to the mounting bracket (2). Two horizontally distributed fixed rods (9) are provided on the mounting bracket (2). A movable seat (10) is slidably connected to the fixed rods (9). Two tilting rubber rods (11) are provided on the movable seat (10).

4. The rubber turning mechanism of a rubber open mill according to claim 3, characterized in that, The mounting frame (2) is equipped with horizontally distributed push cylinders (12), and the moving seat (10) is equipped with a connecting block (13). The push cylinders (12) and the connecting block (13) are driven to connect, and the mounting frame (2) is equipped with a guide plate (14).

5. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, Two bolts (17) are provided through and abutting on the mounting plate (15), and the bolts (17) are threaded onto the mounting bracket (2).

6. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, The telescopic rod (25) is provided with four sliders (26) arranged in a circular array, and the sliders (26) are slidably disposed inside the fixed cylinder (23).

7. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, The fixed block (16) is provided with an extension cylinder (19), and the threaded rod (18) and the extension cylinder (19) are threaded together.

8. The rubber turning mechanism of a rubber open mill according to claim 1, characterized in that, The mounting frame (2) is provided with a material holding assembly, which includes a collection box (28), a docking block (29) provided on the mounting frame (2), a positioning block (30) provided on the collection box (28), and a pin (31) inserted into the docking block (29) and passing through the positioning block (30); the docking block (29) is provided with a positioning groove for the positioning block (30) to be embedded in, and the scraper (22) is provided with an inclined plate (27).

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