A rubber mill

Abstract

The utility model relates to rubber processing technical field discloses a kind of rubber open mill, including bottom plate and control cabinet, and the bottom plate upper is provided with processing structure, and the processing structure includes adjusting mechanism and cutting mechanism, and the adjusting mechanism includes mounting plate, electric telescopic link, moving plate, connecting plate, guide rod one, the mounting plate inner wall and electric telescopic link outer wall are interconnected, and the electric telescopic link bottom and moving plate top are interconnected, and the rubber open mill is realized by electric telescopic link drive extrusion roller lifting, and raw rubber can be pressed and sent into pressing roller gap quickly, avoid the difficulty of eating gum due to the smoothness of roll surface, reduce manual auxiliary operation, extrusion roller and pressing roller synergistic effect, improve the continuity of raw rubber tear processing, and loosen fixed bolt one, bearing plate can slide along guide rod one, the interval of two extrusion rollers is quickly adjusted, and the raw rubber processing demand of different hardness, thickness is adapted.

Description

Technical Field

[0001] This utility model belongs to the field of rubber processing technology, specifically, it relates to a rubber open mill. Background Technology

[0002] An open mill is short for an open-type rubber mixing mill. It uses two differential speed pressing rollers to shear and mix raw rubber. After the raw rubber comes out from the gap between the two differential speed pressing rollers, the rubber sheet attached to the pressing rollers needs to be cut and rolled up manually. Then the direction is changed and it is fed back into the two differential speed pressing rollers, and the process is repeated.

[0003] In existing open mills, raw rubber is usually placed into the mill for processing. However, in actual use, it is not possible to quickly and easily press the raw rubber into the pressing rollers, which results in slow and inconvenient processing and production. Furthermore, it is not possible to quickly and easily adjust the spacing between the pressing rollers, thus reducing the working efficiency of the open mill. Utility Model Content

[0004] The purpose of this invention is to provide a rubber open mill to solve the problems mentioned in the background art.

[0005] A rubber mixing mill includes a base plate and a control cabinet, with a processing structure disposed above the base plate; The processing structure includes an adjustment mechanism and a cutting mechanism; The adjustment mechanism includes a mounting plate, an electric telescopic rod, a movable plate, a connecting plate, and a guide rod. The inner wall of the mounting plate is connected to the outer wall of the electric telescopic rod. The bottom of the electric telescopic rod is connected to the top of the movable plate. One end of the movable plate is connected to one end of the connecting plate. The inner wall of the connecting plate is connected to both ends of the guide rod. A sliding plate is slidably connected to the outer wall of the guide rod. A bearing plate is fixedly installed at one end of the sliding plate. A pressing roller is rotatably connected to the inner side of the bearing plate. A limit plate is fixedly installed at the top of the bearing plate. A fixing bolt is threadedly connected to the inner wall of the limit plate. A pressing roller is rotatably connected to one side of the mounting plate.

[0006] In a preferred embodiment of this utility model, there are two mounting plates, which are symmetrically distributed on the top of the base plate. A movable groove is provided on one side of each mounting plate, and one end of the movable plate is slidably connected to the inner wall of the movable groove, thereby enabling quick and convenient adjustment of the height of the extrusion roller, and thus better pressing of the raw rubber.

[0007] In a preferred embodiment of this utility model, a sliding groove is provided on one side of the connecting plate, one end of the sliding plate is slidably connected to the inner wall of the sliding groove, and an adjustment hole is provided on one side of the connecting plate. One end of the fixing bolt is threadedly connected to the inner wall of the adjustment hole, thereby enabling quick and convenient adjustment of the distance between the two extrusion rollers, and thus enabling better production processing.

[0008] In a preferred embodiment of this utility model, there are two extrusion rollers, which are symmetrically distributed between two connecting plates. There are also two pressing rollers, which are symmetrically distributed between two mounting plates. This allows the raw rubber to be pressed into the pressing rollers quickly and conveniently, thus enabling better production and processing.

[0009] In a preferred embodiment of this utility model, the cutting mechanism includes a drive motor, a threaded rod, an adjusting plate, a second guide rod, and a cutter. The output end of the drive motor is connected to one end of the threaded rod. The outer wall of the threaded rod is threadedly connected to the inner wall of the adjusting plate. The inner wall of the adjusting plate is slidably connected to the outer wall of the second guide rod. One side of the adjusting plate is in contact with one end of the cutter. A fixing plate is fixedly installed on one side of the cutter, and a second fixing bolt is threadedly connected to the inner wall of the fixing plate.

[0010] In a preferred embodiment of this utility model, the adjusting plate is T-shaped, and there are two guide rods. The guide rods are symmetrically distributed on the inner wall of the adjusting plate. A fixing hole is provided on one side of the adjusting plate, and one end of the fixing bolt is threaded to the inner wall of the fixing hole. This allows for quick and convenient cutting of raw rubber, thereby enabling better production and processing.

[0011] In a preferred embodiment of this utility model, the top of the base plate is connected to the bottom of the control cabinet, the top of the base plate is connected to the bottom of the mounting plate, and one side of the mounting plate is connected to one end of the drive motor.

[0012] Compared with the prior art, the present invention has the following advantages: 1. This rubber open mill, through an adjustment mechanism, enables the extrusion rollers to be raised and lowered via an electric telescopic rod. This allows for the rapid pressing and feeding of raw rubber into the gap between the extrusion rollers, avoiding difficulties in rubber feeding caused by smooth roller surfaces and reducing manual assistance. The extrusion rollers and the pressing rollers work together to improve the continuity of raw rubber tearing and refining. Furthermore, by loosening the fixing bolt, the bearing plate can slide along the guide rod, quickly adjusting the distance between the two extrusion rollers to adapt to the processing needs of raw rubber with different hardness and thickness.

[0013] 2. This rubber open mixing mill, through its cutting mechanism, uses a drive motor to move a threaded rod and adjust the horizontal position of the cutter, enabling precise cutting of the refined rubber sheet. This facilitates subsequent rolling, feeding, and secondary rubber mixing. The cutter is detachably connected via a fixing plate and two fixing bolts, allowing for quick replacement by loosening the bolts. No complicated tools are required, reducing maintenance costs.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the cutting mechanism of this utility model; Figure 6 This utility model Figure 5 A magnified structural diagram at point B in the diagram.

[0016] In the diagram: 1. Base plate; 2. Control cabinet; 3. Adjustment mechanism; 301. Mounting plate; 302. Electric telescopic rod; 303. Moving plate; 304. Connecting plate; 305. Guide rod one; 306. Sliding plate; 307. Bearing plate; 308. Extrusion roller; 309. Limiting plate; 310. Fixing bolt one; 311. Pressing roller; 4. Cutting mechanism; 401. Drive motor; 402. Threaded rod; 403. Adjustment plate; 404. Guide rod two; 405. Cutter; 406. Fixing plate; 407. Fixing bolt two. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0018] Example 1: like Figures 1 to 6 As shown, a rubber open mill includes a base plate 1 and a control cabinet 2, with a processing structure provided above the base plate 1; The processing structure includes an adjustment mechanism 3 and a cutting mechanism 4; The adjustment mechanism 3 includes a mounting plate 301, an electric telescopic rod 302, a moving plate 303, a connecting plate 304, and a guide rod 305. The inner wall of the mounting plate 301 is connected to the outer wall of the electric telescopic rod 302. The bottom of the electric telescopic rod 302 is connected to the top of the moving plate 303. One end of the moving plate 303 is connected to one end of the connecting plate 304. The inner wall of the connecting plate 304 is connected to both ends of the guide rod 305. A sliding plate 306 is slidably connected to the outer wall of the guide rod 305. A bearing plate 307 is fixedly installed at one end of the sliding plate 306. A pressing roller 308 is rotatably connected to the inner side of the bearing plate 307. A limiting plate 309 is fixedly installed at the top of the bearing plate 307. A fixing bolt 310 is threadedly connected to the inner wall of the limiting plate 309. A pressing roller 311 is rotatably connected to one side of the mounting plate 301. In this embodiment, there are two mounting plates 301, which are symmetrically distributed on the top of the base plate 1. A movable groove is provided on one side of the mounting plate 301, and one end of the movable plate 303 is slidably connected to the inner wall of the movable groove, so that the height of the extrusion roller 308 can be quickly and conveniently adjusted, thereby better pressing the raw rubber. Furthermore, a sliding groove is provided on one side of the connecting plate 304, and one end of the sliding plate 306 is slidably connected to the inner wall of the sliding groove. An adjustment hole is provided on one side of the connecting plate 304, and one end of the fixing bolt 310 is threadedly connected to the inner wall of the adjustment hole, so that the distance between the two extrusion rollers 308 can be quickly and conveniently adjusted, thereby enabling better production and processing. Furthermore, there are two extrusion rollers 308, which are symmetrically distributed between the two connecting plates 304. There are also two pressing rollers 311, which are symmetrically distributed between the two mounting plates 301. This allows the raw rubber to be pressed into the pressing rollers 311 quickly and conveniently, thus enabling better production and processing.

[0019] Quantitative operation steps for adjusting the mechanism (taking "natural raw rubber with a hardness of 60HA and a thickness of 20mm" as an example) Extrusion feeding adjustment Extrusion roller spacing setting: The raw rubber thickness is 20mm, and the gap between the extrusion rollers needs to be 20mm + 5mm for redundancy (to facilitate rubber feeding). The initial gap is 50mm. Loosen the first fixing bolt (the torque drops from 50N·m to 0), push the bearing plate to slide along the first guide rod, and position it through the adjustment hole of the connecting plate (the gap between each hole is 5mm). After aligning with the 6th hole, tighten the bolt (torque 50N·m). The actual measured gap is 25±0.1mm. Extrusion height adjustment: Start the electric telescopic rod, set it to extend 80mm, drive the extrusion roller to descend to 25mm from the surface of the pressing roller, set the extrusion pressure to 0.6MPa (feedback from the pressure sensor), and the speed to 5mm / s to avoid deformation of the raw rubber due to extrusion. Press roller speed setting: The control cabinet sets the pressing roller speed to 20 r / min (drive roller 20 r / min, driven roller 24 r / min, differential ratio 1:1.2). After the raw rubber is fed in, the extrusion roller rotates synchronously with the raw rubber (speed 18-22 r / min) to ensure continuous and uninterrupted rubber feeding. Glue delivery verification: When raw rubber passes through the gap between the extrusion roller and the pressing roller, if there is no slippage or accumulation and the rubber sheet thickness is uniform (20±0.5mm), the rubber feeding is qualified; if there is slippage, increase the extrusion pressure by 0.1MPa, or increase the pressing roller speed by 2r / min.

[0020] When needed, the operator places the raw rubber into the two pressing rollers 311. Starting the rollers 311 causes them to rotate, tearing and refining the raw rubber. After the first refining is complete, the rollers rotate and the raw rubber is placed back into the gap between the two rollers 311 for a second refining. When the rubber sheet is rolled up and fed into the gap, the smooth roller surfaces make it difficult for the rollers 311 to pick up the rubber, preventing the raw rubber from quickly entering the gap. At this point, the electric telescopic rod 302 is activated, moving the moving plate 303. The moving plate 303 then moves the connecting plate 304, which in turn indirectly moves the bearing plate 307. The bearing plate 307 then moves the extrusion roller 308, allowing for quick and convenient refining. Adjusting the height of the extrusion roller 308 allows the raw rubber to be extruded, enabling it to better enter the pressing roller 311. When the position of the extrusion roller 308 needs to be adjusted, the fixing bolt 310 is rotated to move it within the inner wall of the limiting plate 309. The movement of the fixing bolt 310 allows it to be pulled out from one side of the connecting plate 304, thereby removing the limiting fixation of the bearing plate 307. At this time, pulling the bearing plate 307 moves the extrusion roller 308, which in turn moves the sliding plate 306 on the guide rod 305. This allows for quick and convenient adjustment of the position of the extrusion roller 308, enabling better pressing of different raw rubbers and thus improving production efficiency.

[0021] Example 2: Based on Embodiment 1, the cutting mechanism 4 includes a drive motor 401, a threaded rod 402, an adjusting plate 403, a guide rod 404, and a cutter 405. The output end of the drive motor 401 is connected to one end of the threaded rod 402. The outer wall of the threaded rod 402 is threadedly connected to the inner wall of the adjusting plate 403. The inner wall of the adjusting plate 403 is slidably connected to the outer wall of the guide rod 404. One side of the adjusting plate 403 is pressed against one end of the cutter 405. A fixing plate 406 is fixedly installed on one side of the cutter 405. A fixing bolt 407 is threadedly connected to the inner wall of the fixing plate 406. In this embodiment, the adjusting plate 403 is T-shaped, and there are two guide rods 404. The guide rods 404 are symmetrically distributed on the inner wall of the adjusting plate 403. A fixing hole is opened on one side of the adjusting plate 403, and one end of the fixing bolt 407 is threaded to the inner wall of the fixing hole, so that the raw rubber can be cut quickly and conveniently, and thus better production and processing can be carried out. Furthermore, the top of the base plate 1 is connected to the bottom of the control cabinet 2, the top of the base plate 1 is connected to the bottom of the mounting plate 301, and one side of the mounting plate 301 is connected to one end of the drive motor 401.

[0022] Quantitative operation steps for the cutting mechanism (accepting the above-mentioned 60HA raw rubber, with a film width of 500mm). Precision cutting adjustment Cutting blade position setting: The 500mm wide film needs to be cut into two 250mm sections. The drive motor is set to rotate clockwise 12,500 steps (corresponding to the cutter moving 25mm), and the cutter is positioned at the center of the film (deviation ≤0.5mm). Cutting speed adaptation: The pressing roller rotates at 20 r / min, the film output speed is about 0.314 m / min (π×0.3m×20 r / min), and the cutter movement speed is set at 0.3 m / min to be synchronized with the film output speed to avoid tearing during cutting; Cutting effect verification: After cutting, measure the width of the film with calipers (250±1mm). If there are no burrs or tears on the edges, the cutting is qualified. If there are burrs, grind the cutting edge (with 1000-grit sandpaper) or increase the cutting speed by 0.05m / min.

[0023] Quick assembly and disassembly of the cutter Disassembly process: Turn off the power to the equipment, loosen the second fixing bolt with an Allen wrench (size H4) (the torque drops from 15 N·m to 0), and remove the bolt, spring washer and flat washer; Pull the cutter horizontally along the adjustment plate (apply force ≤15N), clean the residual rubber on the blade edge. The whole process should take ≤1 minute. This method is suitable for replacing the cutter when the blade edge wear is >0.2mm. Installation process: Check the new cutting blade edge (no burrs, wear ≤0.1mm), align it with the fixing hole of the adjustment plate and push it in; Install the flat washer, spring washer and fixing bolt in sequence, tighten to 15 N·m, and manually push the cutter to verify smooth sliding (resistance ≤ 5 N).

[0024] Safety protection, temperature control and maintenance measures Key control parameters for rubber processing Temperature control: During the mixing process, the film temperature needs to be controlled between 60-100℃ (monitored by the temperature sensor in the control cabinet). If the temperature exceeds 100℃, start the cooling fan (airflow ≥ 500m³ / h). 3 / h), to avoid scorching of the rubber; Overload protection: When the extrusion pressure exceeds 1.2MPa or the load on the pressing roller exceeds 1.5 times the rated value, the equipment will automatically stop and alarm to prevent the motor from burning out or the roller from deforming. Emergency stop control: A red emergency stop button (40mm in diameter, model LA38-11ZS) is provided on the side of the mounting plate and the control cabinet. Pressing it will cut off the main power supply (response time ≤ 0.1 seconds), which is suitable for glue feeding jams or cutting abnormalities.

[0025] When needed, the operator places the raw rubber into the two pressing rollers 311. Starting the pressing rollers 311 allows for tearing and refining of the raw rubber. The adjusting mechanism 3 allows for quick and easy pressing of the raw rubber into the pressing rollers 311, facilitating better processing and production. It also allows for quick and easy adjustment of the distance between the two pressing rollers 308, further enhancing pressing performance. After one tearing and refining cycle, starting the drive motor 401 rotates the threaded rod 402, which in turn rotates the adjusting plate 4. 03 Slides on guide rod 404, and moves cutter 405 by adjusting plate 403. Cutter 405 can cut raw rubber by moving, so that it can be removed more easily. When it is necessary to disassemble cutter 405, rotate fixing bolt 407 to move it on the inner wall of fixing plate 406. The movement of fixing bolt 407 can pull it out from one side of adjusting plate 403, so that the limiting fixation of cutter 405 can be removed, and cutter 405 can be disassembled. When it is necessary to install, repeat the above steps in reverse.

Claims

1. A rubber open mill, comprising a base plate (1) and a control cabinet (2), characterized in that: A processing structure is provided above the base plate (1); The processing structure includes an adjustment mechanism (3) and a cutting mechanism (4). The adjustment mechanism (3) includes a mounting plate (301), an electric telescopic rod (302), a moving plate (303), a connecting plate (304), and a guide rod (305). The inner wall of the mounting plate (301) is connected to the outer wall of the electric telescopic rod (302). The bottom of the electric telescopic rod (302) is connected to the top of the moving plate (303). One end of the moving plate (303) is connected to one end of the connecting plate (304). The inner wall of the connecting plate (304) is connected to the guide rod (305). 5) The two ends are connected to each other. A sliding plate (306) is slidably connected to the outer wall of the guide rod (305). A bearing plate (307) is fixedly installed at one end of the sliding plate (306). A pressing roller (308) is rotatably connected to the inner side of the bearing plate (307). A limiting plate (309) is fixedly installed at the top of the bearing plate (307). A fixing bolt (310) is threadedly connected to the inner wall of the limiting plate (309). A pressing roller (311) is rotatably connected to one side of the mounting plate (301).

2. The rubber open mill according to claim 1, characterized in that: There are two mounting plates (301), which are symmetrically distributed on the top of the base plate (1). A moving groove is provided on one side of the mounting plate (301), and one end of the moving plate (303) is slidably connected to the inner wall of the moving groove.

3. A rubber open mill according to claim 1, characterized in that: The connecting plate (304) has a sliding groove on one side, and one end of the sliding plate (306) is slidably connected to the inner wall of the sliding groove. The connecting plate (304) has an adjustment hole on one side, and one end of the fixing bolt (310) is threadedly connected to the inner wall of the adjustment hole.

4. A rubber open mill according to claim 1, characterized in that: There are two extrusion rollers (308), which are symmetrically distributed between the two connecting plates (304). There are two pressing rollers (311), which are symmetrically distributed between the two mounting plates (301).

5. A rubber open mill according to claim 1, characterized in that: The cutting mechanism (4) includes a drive motor (401), a threaded rod (402), an adjusting plate (403), a guide rod (404), and a cutter (405). The output end of the drive motor (401) is connected to one end of the threaded rod (402). The outer wall of the threaded rod (402) is threadedly connected to the inner wall of the adjusting plate (403). The inner wall of the adjusting plate (403) is slidably connected to the outer wall of the guide rod (404). One side of the adjusting plate (403) is pressed against one end of the cutter (405). A fixing plate (406) is fixedly installed on one side of the cutter (405). A fixing bolt (407) is threadedly connected to the inner wall of the fixing plate (406).

6. A rubber open mill according to claim 5, characterized in that: The adjusting plate (403) is T-shaped, and there are two guide rods (404). The guide rods (404) are symmetrically distributed on the inner wall of the adjusting plate (403). A fixing hole is provided on one side of the adjusting plate (403), and one end of the fixing bolt (407) is threaded to the inner wall of the fixing hole.

7. A rubber open mill according to claim 1, characterized in that: The top of the base plate (1) is connected to the bottom of the control cabinet (2), the top of the base plate (1) is connected to the bottom of the mounting plate (301), and one side of the mounting plate (301) is connected to one end of the drive motor (401).

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