Material receiving and blocking structure of open mill for rubber mixing

Abstract

The utility model discloses a material receiving and blocking structure of an open mill for rubber mixing, which comprises a rack of the open mill, the rack comprises a bottom frame and side support frames fixed on the left side and the right side of the top surface of the bottom frame, two ends of a rear roller are movably connected on the two side support frames through bearings, a front roller is positioned in front of the rear roller, and the front roller is positioned in front of the rear roller. The left end and the right end of the front roller are movably connected to the corresponding moving blocks through bearings, the moving blocks are inserted into moving through grooves which are formed in the middles of the corresponding side supporting frames and extend front and back in a sleeved mode, and the front roller is close to the front end of the rear roller. When the distance between the front roller and the rear roller is finely adjusted, the self-lubricating wear-resisting plate can extend forwards and lean against the outer side wall of the front roller under the elastic action of the compression spring, so that tight connection is realized, rubber extrusion is prevented, and the mixing effect is ensured.

Description

Technical Field:

[0001] The utility model relates to the technical field of rubber processing equipment, and more specifically to a material receiving and blocking structure for an open mill used for rubber mixing. Background Art:

[0002] Mixing is a process of using a rubber mixing machine such as an open mill to mix raw rubber or plasticized raw rubber with compounding agents into a mixed rubber, and it is the most important production process in rubber processing. Essentially, it is a process of uniformly dispersing compounding agents in raw rubber. The granular compounding agents are in the dispersed phase, and the raw rubber is in the continuous phase.

[0003] In the existing open mill, baffles are provided at the left and right parts of the front roller and the rear roller to prevent the rubber from spreading to the left and right during mixing. However, since the front roller can be adjusted in the front and rear positions as needed to change the roller distance between the front roller and the rear roller, when it is adjusted, the part of the baffle between the front roller and the rear roller cannot be adjusted accordingly. When the roller distance increases, a gap will appear, affecting the material blocking effect. Therefore, when the roller distance increases, it is necessary to replace the baffle of the corresponding size. However, if it is only a fine adjustment, that is, the adjusted distance is not large enough to install a larger baffle, but the small baffle cannot cover the distance between the front roller and the rear roller. At this time, there will be a gap between the baffle and the front roller and the rear roller, and part of the rubber material will be squeezed out from the gap, affecting the mixing effect. Content of the Utility Model:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a material receiving and blocking structure for an open mill used for rubber mixing. When the distance between the front roller and the rear roller is finely adjusted, through the elastic action of the compression spring, the self-lubricating wear-resistant plate can extend forward and lean against the outer side wall of the front roller, so as to make a tight connection, prevent the rubber from being extruded, and ensure the mixing effect.

[0005] The solution for the utility model to solve the above technical problems is:

[0006] A material receiving and blocking structure for an open mill used for rubber mixing, including the frame of the open mill. The frame includes a bottom frame and side support frames fixed on the left and right sides of the top surface of the bottom frame. The two ends of the rear roller are movably connected to the two side support frames through bearings. The front roller is in front of the rear roller, and the left and right ends of the front roller are movably connected to the corresponding moving blocks through bearings. The moving blocks are inserted into the front and rear extending moving through grooves formed in the middle of the corresponding side support frames. The front end of the front roller is close to the rear roller.

[0007] On the front wall surfaces of the two side support frames, there are fixed front fixing plates. The middle part of the front fixing plate covers the front end of the corresponding moving through groove. On the front wall surface of the front fixing plate, there is a fixed moving motor. The rear end of the output shaft of the moving motor extends out of the rear wall surface of the front fixing plate and is connected with an adjusting screw rod through a coupling. The adjusting nut sleeve is screwed on the adjusting screw rod, and the rear end of the adjusting nut sleeve is fixed on the front end surface of the corresponding moving block;

[0008] In the middle of the top surfaces of the top plates of the two side support frames, there are fixed support blocks. Between the two support blocks, there are two baffles. The baffles are fixedly connected to the adjacent corresponding support blocks. At the front and rear parts of the bottom surfaces of the two baffles, arc-shaped grooves are formed. The front roller and the rear roller are inserted into the corresponding arc-shaped grooves. The bottoms of the two baffles are located between the front roller and the rear roller;

[0009] On the inner wall surface of the rear arc-shaped groove, there is a fixed rear wear-resistant self-lubricating strip. The inner wall surface of the rear wear-resistant self-lubricating strip is closely attached to the outer wall surface of the rear roller. In the middle of the inner wall surface of the front arc-shaped groove, there is an inward-extending extension groove. The self-lubricating wear-resistant plate is inserted into the extension groove. The front part of the self-lubricating wear-resistant plate is an arc-shaped wall surface, which is closely attached to the outer wall surface of the front roller.

[0010] On the rear wall surface of the extension groove, there are fixed a plurality of pressing springs. The rear wall surface of the self-lubricating wear-resistant plate is fixed on the front end surfaces of all the pressing springs.

[0011] In the middle of the opposite wall surfaces of the two side support frames, there are fixed rodless cylinders extending front and rear. The bottom surfaces of the moving blocks of the two rodless cylinders are fixed to the same horizontally extending cross beam. On the left and right parts of the top surface of the cross beam, there are fixed lifting cylinders. The bottom ends of the push rods of the two lifting cylinders extend out of the bottom surface of the cross beam and are fixed to the same lifting horizontal plate. A rubber scraping plate is fixed to the bottom surface of the lifting horizontal plate.

[0012] On the top surface of the chassis, there is a fixed placement rack. The receiving tray is placed on the placement rack. The rubber scraping plate is directly above the receiving tray.

[0013] The outstanding effect of the present utility model is:

[0014] When the distance between the front roller and the rear roller is finely adjusted by its baffle, through the elastic action of the pressing springs, the self-lubricating wear-resistant plate can extend forward and lean against the outer wall surface of the front roller, so as to make a tight connection, prevent the rubber from extruding, and ensure the mixing effect. Brief description of the drawings:

[0015] Figure 1 is a partial structural schematic diagram of the present utility model;

[0016] Figure 2 is a partial cross-sectional view of the present utility model;

[0017] Figure 3 isFigure 2 Partial enlarged view;

[0018] Figure 4 It is a schematic diagram of the local structure at the reinforcing plate. Specific implementation method:

[0019] In the embodiment, as shown in Figures 1 to 4 A material receiving and blocking structure for an open mill used in rubber mixing, including the frame 10 of the open mill. The frame 10 includes a chassis and side supports 11 fixed to the left and right sides of the top surface of the chassis. Both ends of the rear roller 12 are movably connected to the two side supports 11 through bearings. The front roller 13 is in front of the rear roller 12. The left and right ends of the front roller 13 are movably connected to the corresponding moving blocks 14 through bearings. The moving blocks 14 are inserted into the front and rear extending moving through grooves 111 formed in the middle of the corresponding side supports 11. The front end of the front roller 13 is close to the rear roller 12. Protruding guiding parts are formed in the middle of the top surface and the bottom surface of the moving block 14, and the protruding guiding parts are inserted into the front and rear extending guiding grooves formed in the top surface or the bottom surface of the moving through groove 111.

[0020] Front fixing plates are fixed on the front wall surfaces of the two side supports 11. The middle of the front fixing plate covers the front end of the corresponding moving through groove 111. A moving motor 15 is fixed on the front wall surface of the front fixing plate. The rear end of the output shaft of the moving motor 15 extends out of the rear wall surface of the front fixing plate and is connected with an adjusting screw rod 151 through a coupling. An adjusting nut sleeve 152 is screwed on the adjusting screw rod 151, and the rear end of the adjusting nut sleeve 152 is fixed on the front end surface of the corresponding moving block 14.

[0021] When the moving motor 15 operates, the adjusting screw rod 151 rotates, moving the adjusting nut sleeve 152 backward, so that the moving block 14 moves backward, changing the roll gap between the front roller 13 and the rear roller 12. This moving motor 15 is a servo motor, with high adjustment accuracy and good effect.

[0022] Furthermore, support blocks 16 are fixed in the middle of the top surfaces of the top plates of the two side supports 11. There are two baffle plates 17 between the two support blocks 16. The baffle plates 17 are fixedly connected to the adjacent corresponding support blocks 16. Arc-shaped grooves are formed in the front and rear parts of the bottom surfaces of the two baffle plates 17. The front roller 13 and the rear roller 12 are inserted into the corresponding arc-shaped grooves. The bottoms of the two baffle plates 17 are between the front roller 13 and the rear roller 12.

[0023] A rear wear-resistant self-lubricating strip 171 is fixed on the inner wall surface of the rear arc-shaped groove. The inner wall surface of the rear wear-resistant self-lubricating strip 171 is closely attached to the outer wall surface of the rear roller 12. An extending groove extending inward is formed in the middle of the inner wall surface of the front arc-shaped groove. A self-lubricating wear-resistant plate 172 is inserted into the extending groove. The front part of the self-lubricating wear-resistant plate 172 is an arc-shaped wall surface, which is closely attached to the outer wall surface of the front roller 13.

[0024] A plurality of pressing springs 1 are fixed on the rear wall surface of the extension groove, and the rear wall surface of the self-lubricating wear-resistant plate 172 is fixed on the front end surfaces of all the pressing springs 1.

[0025] An upper self-lubricating strip 2 is fixed on the top surface of the extension groove, and the top surface of the self-lubricating wear-resistant plate 172 is closely attached to the bottom surface of the upper self-lubricating strip 2.

[0026] This structure enables the moving block 14 to be finely adjusted back and forth, that is, when the roll distance between the front roll 13 and the rear roll 12 is finely adjusted, through the action of all the pressing springs 1, it can ensure that the arc-shaped wall surface of the self-lubricating wear-resistant plate 172 is closely attached to the outer side wall of the front roll 13, ensuring the material blocking effect and preventing the rubber material from being extruded from the left and right sides (since the distance adjustment between the front roll 13 and the rear roll 12 in this embodiment is generally fine adjustment, therefore, it can be corrected through the elastic deformation of the pressing springs 1 to ensure that the arc-shaped wall surface of the self-lubricating wear-resistant plate 172 is closely attached to the outer side wall of the front roll 13).

[0027] Furthermore, a reinforcing plate 173 is fixed on the outer side wall of the baffle 17, and a plurality of adjusting studs 174 are fixed on the outer side wall of the reinforcing plate 173. The adjusting studs 174 are inserted into the transverse through holes formed in the corresponding support blocks 16. Two locking nuts 175 are screwed on the adjusting studs 174, and the support block 16 is clamped between the corresponding front locking nut 175 and the rear locking nut 175. This structure enables the baffle 17 to be disassembled and replaced. At the same time, by loosening the corresponding locking nuts 175, the baffle 17 can be horizontally moved along the corresponding several adjusting studs 174, thereby changing the position of the baffle 17 where the front roll 13 and the rear roll 12 are located, changing the distance between the two baffles 17, and meeting the required left-right distance of the rubber material kneaded on the front roll 13 and the rear roll 12.

[0028] Furthermore, rodless cylinders 20 extending forward and backward are fixed in the middle of the opposite wall surfaces of the two side support frames 11. The bottom surfaces of the moving blocks of the two rodless cylinders 20 are fixed to the same horizontally extending cross beam 21. The left and right parts of the top surface of the cross beam 21 are both fixed with lifting cylinders 30. The bottom ends of the push rods of the two lifting cylinders 30 extend out of the bottom surface of the cross beam 21 and are fixed to the same lifting horizontal plate 31. A rubber scraping plate 32 is fixed to the bottom surface of the lifting horizontal plate 31.

[0029] A placing rack 40 is fixed on the top surface of the chassis, a receiving tray 50 is placed on the placing rack 40, and the rubber scraping plate 32 is located directly above the receiving tray 50.

[0030] The distance between the left and right ends of the rubber scraping plate 32 is matched with the distance between the inner side walls of the left and right side plates of the receiving tray 50;

[0031] During the mixing process, some rubber materials will fall into the material receiving tray 50. Pushed by the push rods of two lifting cylinders 30, the rubber scraper 32 descends and extends into the material receiving tray 50. The bottom end thereof leans against the rear top surface of the bottom plate of the material receiving tray 50 (the rubber scraper 32 is an elastic plate). Then, by operating two rodless cylinders 20, the rubber scraper 32 moves forward to move the rubber materials on the top surface of the bottom plate of the material receiving tray 50 forward, which is convenient for manual taking. Then, it is re-placed on the rubber materials for mixing. It has good use effect and high automation degree.

[0032] Furthermore, a plurality of elastic positioning blocks 51 are fixed on the bottom surface of the material receiving tray 50, and the elastic positioning blocks 51 are clamped in the positioning concave holes formed on the top surface of the top plate of the placement rack 40.

[0033] The elastic positioning blocks 51 can improve the fixing firmness effect between the material receiving tray 50 and the placement rack 40.

Claims

1. A material receiving and blocking structure for a rubber mixing mill, comprising a frame (10) of the rubber mixing mill, characterized in that: The frame (10) includes a chassis and side support frames (11) fixed to the left and right sides of the top surface of the chassis. Both ends of the rear roller (12) are movably connected to the two side support frames (11) through bearings. The front roller (13) is located in front of the rear roller (12). The left and right ends of the front roller (13) are movably connected to the corresponding moving blocks (14) through bearings. The moving blocks (14) are inserted into the front-back extending moving through slots (111) formed in the middle of the corresponding side support frames (11). The front end of the front roller (13) is close to the rear roller (12). Front fixing plates are fixed to the front wall surfaces of the two side support frames (11). The middle of the front fixing plate covers the front end of the corresponding moving through slot (111). A moving motor (15) is fixed to the front wall surface of the front fixing plate. The rear end of the output shaft of the moving motor (15) extends out of the rear wall surface of the front fixing plate and is connected to an adjusting screw rod (151) through a coupling. An adjusting nut sleeve (152) is screwed onto the adjusting screw rod (151). The rear end of the adjusting nut sleeve (152) is fixed to the front end surface of the corresponding moving block (14). Support blocks (16) are fixed to the middle of the top surfaces of the top plates of the two side support frames (11). Two baffle plates (17) are arranged between the two support blocks (16). The baffle plates (17) are fixedly connected to the adjacent corresponding support blocks (16). Arc-shaped grooves are formed in the front and rear parts of the bottom surfaces of the two baffle plates (17). The front roller (13) and the rear roller (12) are inserted into the corresponding arc-shaped grooves. The bottoms of the two baffle plates (17) are located between the front roller (13) and the rear roller (12). A rear wear-resistant self-lubricating strip (171) is fixed to the inner side wall of the rear arc-shaped groove. The inner wall surface of the rear wear-resistant self-lubricating strip (171) closely adheres to the outer side wall of the rear roller (12). An extending groove extending inwards is formed in the middle of the inner wall surface of the front arc-shaped groove. A self-lubricating wear-resistant plate (172) is inserted into the extending groove. The front part of the self-lubricating wear-resistant plate (172) is an arc-shaped wall surface, which closely adheres to the outer side wall of the front roller (13).

2. The material receiving and blocking structure of an open mill for rubber mixing according to claim 1, characterized in that: A plurality of pressing springs (1) are fixed to the rear wall surface of the extending groove. The rear wall surface of the self-lubricating wear-resistant plate (172) is fixed to the front end surfaces of all the pressing springs (1).

3. The material receiving and blocking structure of an open mill for rubber mixing according to claim 2, characterized in that: An upper self-lubricating strip (2) is fixed to the top surface of the extending groove. The top surface of the self-lubricating wear-resistant plate (172) closely adheres to the bottom surface of the upper self-lubricating strip (2).

4. The material receiving and blocking structure of an open mill for rubber mixing according to claim 1, characterized in that: Reinforcing plates (173) are fixed to the outer side walls of the baffle plates (17). A plurality of adjusting stud bolts (174) are fixed to the outer side walls of the reinforcing plates (173). The adjusting stud bolts (174) are inserted into the transverse through holes formed in the corresponding support blocks (16). Two locking nuts (175) are screwed onto the adjusting stud bolts (174). The support blocks (16) are clamped between the corresponding front locking nuts (175) and rear locking nuts (175).

5. The material receiving and blocking structure of an open mill for rubber mixing according to claim 1, characterized in that: On the middle parts of the opposite wall surfaces of the two side support frames (11), a rodless cylinder (20) extending front and back is fixedly installed. On the bottom surfaces of the moving blocks of the two rodless cylinders (20), a transverse beam (21) extending left and right is fixedly installed. On the left and right parts of the top surface of the transverse beam (21), a lifting cylinder (30) is fixedly installed. The bottom ends of the push rods of the two lifting cylinders (30) extend out of the bottom surface of the transverse beam (21) and are fixedly installed with a same lifting horizontal plate (31). A rubber squeegee (32) is fixedly installed on the bottom surface of the lifting horizontal plate (31).

6. The material receiving and blocking structure of an open mill for rubber mixing according to claim 5, characterized in that: A placing rack (40) is fixedly installed on the top surface of the chassis. A material receiving tray (50) is placed on the placing rack (40). The rubber squeegee (32) is directly above the material receiving tray (50).

7. The material receiving and blocking structure of an open mill for rubber mixing according to claim 6, characterized in that: A plurality of elastic positioning blocks (51) are fixedly installed on the bottom surface of the material receiving tray (50). The elastic positioning blocks (51) are clamped in positioning concave holes formed on the top surface of the top plate of the placing rack (40).

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