Scraping device for roller groove of open mill

Abstract

The utility model relates to a scraping device for a roller groove of an open mill, which comprises a rack, a left support frame and a right support frame which are symmetrically arranged, and a base for supporting is arranged at the bottom of the support frame; the material pressing device is rotatably arranged between the supporting frames and comprises a smooth roller and a grooved roller which are arranged front and back, and a plurality of grooves are formed in the outer wall of the grooved roller; the scraper device is located in front of the groove roller, is obliquely arranged upwards and faces the outer wall of the groove roller, and comprises scraper device fixing bases fixedly installed on the two sides of the supporting frame, a scraper plate base is movably arranged between the scraper device fixing bases, and a scraper plate used for cleaning a groove is arranged on the top face of the scraper plate base; according to the utility model, the scraper device with an inclined angle is arranged, so that hardened deposits remained in the groove are continuously cleaned in the rotating process of the roller, the tightness of the scraper can be adjusted only by rotating the adjusting handle, the operation is more convenient, the residues in the groove of the roller are ensured to be efficiently cleaned, and the accumulation of materials is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of open mills, and particularly relates to a scraping device for the grooves of the rolls of an open mill. Background Art

[0002] An open mill is the core mixing equipment in the rubber and plastic products industry. It generates a shearing effect through two rotatable rolls arranged in parallel to achieve the plasticizing, mixing, and sheet pressing operations of materials. The surfaces of the rolls of traditional open mills are mostly designed with smooth surfaces or shallow patterns, and there is a problem of insufficient shearing efficiency when dealing with high-viscosity and high-fill materials. For this reason, rolls with a deep groove structure have been developed in the industry. By machining axial or spiral grooves on the roll surface, the material conveying capacity and shearing effect are significantly enhanced.

[0003] However, it is found that the grooved roll has an inherent defect in actual application: during continuous operation, due to the high-viscosity characteristics of the processing material, it is easy for the grooves to remain adhered with materials. Especially when processing formulations containing fillers or additives, the residues will form hardened accumulations with the change of the roll temperature, which not only pollutes the raw materials of subsequent batches, but also causes uneven temperature distribution on the roll surface, resulting in fluctuations in mixing quality and increased energy consumption. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a scraping device for the grooves of the rolls of an open mill to solve the above problems of the existing technology.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: A scraping device for the grooves of the rolls of an open mill, comprising:

[0006] A frame, which includes support frames symmetrically arranged on the left and right. The bottom of the support frame is provided with a base for support;

[0007] A material pressing device, which is rotatably arranged between the support frames. It includes a smooth roll and a grooved roll arranged front and back. A plurality of grooves are provided on the outer wall of the grooved roll;

[0008] A scraper device, which is arranged obliquely upward in front of the grooved roll and faces the outer wall of the grooved roll. It includes scraper device fixing seats symmetrically and fixedly installed on both sides of the support frame. A scraper plate seat is movably arranged on the scraper device fixing seat. A scraper plate for cleaning the grooves is provided on the top surface of the scraper plate seat. Positioning structures for restricting the movement of the scraper plate are provided at both ends of the scraper plate seat. An adjusting structure for adjusting the movement of the scraper plate is provided on the scraper device fixing seat.

[0009] Furthermore, the outer wall of the smooth roll is smooth, and a smooth roll scraper for cleaning the materials on the smooth roll is further provided at the bottom, which can effectively scrape off the rubber or other materials adhered to the roll surface and keep the roll surface clean.

[0010] Further, the light roller scraper is arranged facing the rotation direction of the light roller cylinder, improving the cleaning efficiency.

[0011] Further, the light roller cylinder and the grooved roller cylinder rotate in opposite rotation directions respectively, reducing residues and improving production efficiency.

[0012] Further, the rotation speed of the light roller cylinder is faster than that of the grooved roller cylinder, improving the mixing uniformity and efficiency.

[0013] Further, the connection mode between the scraper plate seat and the scraper plate adopts at least one of welding connection or bolt connection, improving stability and convenience.

[0014] Further, the positioning structure includes strip-shaped positioning holes opened at both ends of the scraper plate seat. A positioning piece is sleeved on a fixing bolt penetrating through the strip-shaped positioning holes for fixing the scraper plate seat. The fixing bolt is tightly connected with the scraper plate seat through the positioning piece, improving stability.

[0015] Further, the adjusting structure includes a convex strip arranged on the fixing seat of the scraper device. An installation hole is opened on the convex strip. An adjusting handle for adjusting the scraper plate seat is arranged in the installation hole. The adjusting handle is movably arranged in the installation hole, and one end of it extends out of the installation hole and abuts against the scraper plate seat, improving the mobility of the scraper and facilitating the adjustment operation.

[0016] Further, the adjusting handle includes an adjusting handle and an adjusting screw fixed on the adjusting handle. One end of the adjusting screw extends out of the installation hole and abuts against the scraper plate seat.

[0017] Further, a placement groove is also arranged on the fixing seat of the scraper device, and both ends of the scraper plate seat are placed in the placement groove.

[0018] The beneficial effects of the present utility model are as follows: By setting a scraper device with an inclined angle, the tip of the scraper accurately cleans the residues in the grooves, and continuously cleans the hardened deposits remaining in the grooves during the rotation of the roller cylinder. By setting an adjusting handle, the scraper can be adjusted by simply rotating it, that is, the tightness of the scraper device can be adjusted. The operation is relatively convenient, ensuring the efficient removal of residues in the roller cylinder grooves and avoiding material accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0020] Figure 1 It is a schematic structural diagram of a scraping device for the grooves of a roller of an internal mixer of the present utility model;

[0021] Figure 2 This is a cross-sectional view of a scraping device for the roller grooves of a kneader according to the present utility model;

[0022] Figure 3 This is a cross-sectional view of the scraper device according to the present utility model;

[0023] Figure 4 This is a schematic diagram of the partial structure of a scraping device for the roller grooves of a kneader according to the present utility model;

[0024] Figure 5 This is a schematic diagram of the partial structure of the fixed seat of the scraper device according to the present utility model;

[0025] Figure 6 This is a schematic diagram of the partial structure of the scraping device according to another embodiment of the present utility model.

[0026] Main reference numerals description: 1, frame; 11, support frame; 12, base; 2, material pressing device; 21, smooth roller; 22, grooved roller; 23, groove; 24, smooth roller scraper; 3, scraper device; 31, fixed seat of scraper device; 32, scraper plate seat; 33, scraper plate; 34, positioning structure; 341, fixing bolt; 342, positioning piece; 343, strip-shaped positioning hole; 35, adjusting structure; 351, rib; 352, mounting hole; 353, adjusting handle; 3531, adjusting handle; 3532, adjusting screw; 354, placing groove. Detailed implementation manners

[0027] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0028] Embodiment 1

[0029] Figure 1 This is a schematic diagram of the structure of a scraping device for the roller grooves of a kneader according to the present utility model, Figure 2 This is a cross-sectional view of a scraping device for the roller grooves of a kneader according to the present utility model, Figure 3 This is a cross-sectional view of the scraper device according to the present utility model;

[0030] As Figure 1 、 Figure 2 and Figure 3 shown, the structure of the scraping device for the roller grooves of a kneader according to the embodiment of the present utility model will be described in detail, including:

[0031] A frame 1, which includes support frames 11 symmetrically arranged on the left and right, and a base 12 for support is provided at the bottom of the support frames 11;

[0032] The blanking device 2 is rotatably arranged between the support frames 11. It includes a smooth roller 21 and a grooved roller 22 arranged front and back. A number of grooves 23 are provided on the outer wall of the grooved roller 22;

[0033] The scraping device 3 is arranged obliquely upward in front of the grooved roller 22 and faces the outer wall of the grooved roller 22. It includes scraping device fixing seats 31 symmetrically and fixedly installed on both sides of the support frame 11. A scraper plate seat 32 is movably arranged on the scraping device fixing seat 31. A scraper plate 33 for cleaning the grooves 23 is provided on the top surface of the scraper plate seat 32. Positioning structures 34 for restricting the movement of the scraper plate 33 are provided at both ends of the scraper plate seat 32. An adjusting structure 35 for adjusting the movement of the scraper plate 33 is provided on the scraping device fixing seat 31.

[0034] To keep the rollers and the material clean, the outer wall of the smooth roller 21 is smooth and a smooth roller scraper 24 for cleaning the material on the smooth roller 21 is further provided at the bottom. During the mixing process, the surface of the smooth roller 21 is prone to adhering to rubber compounds, increasing the working pressure of the mill. The setting of the smooth roller scraper 24 can timely scrape off these adhered rubber compounds, reduce the extra burden on the equipment, prevent the accumulation of rubber compounds, and play a role in keeping the rollers clean.

[0035] To improve the cleaning efficiency, the smooth roller scrapers 24 are arranged facing each other in the rotating direction of the smooth roller 21. Specifically, the smooth roller scrapers 24 are arranged facing each other against the rotating direction of the smooth roller 21. When the smooth roller 21 rotates to mix the material, the relative speed between the smooth roller scraper 24 and the surface of the smooth roller 21 is greater, thereby enhancing the scraping force of the scraper on the material on the roller surface and making it easier to scrape off the material.

[0036] To reduce residues, the smooth roller 21 and the grooved roller 22 rotate in opposite directions. The rotating direction of the smooth roller 21 is specifically clockwise, and the rotating direction of the grooved roller 22 is specifically counterclockwise. During the rotation of the rollers rotating towards each other, due to the opposite rotating directions of the two, a strong shear force will be generated in the rubber compound. This shear force makes the force more evenly distributed and can effectively scrape off the residues.

[0037] To improve the mixing uniformity and efficiency, the rotation speed of the smooth roller 21 is faster than that of the grooved roller 22. During the rotation of the rollers with different speeds rotating towards each other, due to the different linear speeds of the two, this speed gradient can make the rubber compound receive a strong shear force when passing through the gap. Due to the enhancement of the shear force, the rubber compound can be more fully mixed in a shorter time, thereby improving the production efficiency.

[0038] To improve the stability of the scraper plate 33, the connection between the scraper plate seat 32 and the scraper plate 33 is welded. Welding can form a firm integrated structure, providing a connection effect with high strength and high rigidity. This makes the scraper plate seat 32 and the scraper plate 33 an integral whole, capable of withstanding greater loads and impact forces, and effectively preventing deformation or fracture under harsh working conditions.

[0039] Figure 4 This is a partial structural schematic diagram of a material scraping device for the roller groove of an internal mixer of the present utility model. Figure 5 This is a partial structural schematic diagram of a fixing seat of a scraper device of the present utility model. As Figure 4 、 Figure 5 shown, the positioning structure and adjustment structure of the roller groove of the internal mixer according to the embodiment of the present utility model will be described in detail.

[0040] To improve the stability of the scraper device, the positioning structure 34 includes strip-shaped positioning holes 343 opened at both ends of the scraper plate seat 32. A fixing bolt 341 for fixing the scraper plate seat 32 penetrates through the strip-shaped positioning holes 343. A positioning piece 342 is sleeved on the fixing bolt 341. The fixing bolt 341 is tightly connected to the scraper plate seat 32 through the positioning piece 342. The fixing bolt 341 penetrates through the strip-shaped positioning holes 343 and is fixed on the scraper device fixing seat 31 at the bottom. The positioning piece 342 is sleeved on the fixing bolt 341, and a buffer ring is arranged between the positioning piece 342 and the bolt head of the fixing bolt 341 to strengthen the fixing effect between the bolt 341 and the positioning piece 342. The shape of the strip-shaped positioning holes 343 is adapted to the fixing bolt 341 and is used to limit the movement of the scraper plate seat 32 on the scraper device fixing seat 31. When the scraper plate seat 32 moves forward or backward, the inner walls on both sides of the strip-shaped positioning holes 343 will abut against the fixing bolt 341, making it unable to move further, so as to play a role in restricting the movement.

[0041] In order to improve the mobility of the scraper and facilitate adjustment operations, the adjustment structure 35 includes a rib 351 provided on the fixed seat 31 of the scraper device. An installation hole 352 is formed in the rib 351. An adjustment handle 353 for adjusting the scraper plate seat 32 is provided in the installation hole 352. The adjustment handle 353 is movably arranged in the installation hole 352. The adjustment handle 353 includes an adjustment handle 3531 and an adjustment screw 3532 fixed to the adjustment handle 3531. One end of the adjustment screw 3532 extends out of the installation hole 352 and abuts against the scraper plate seat 32. External threads are provided on the adjustment screw 3532, and internal threads that are threadedly connected and matched with the adjustment screw 3532 are provided on the inner wall of the installation hole 352. When the adjustment handle 3531 is rotated forward or backward, the adjustment handle 3531 drives the adjustment screw 3532 to rotate, thereby pushing the scraper plate 33 forward or backward to control the distance and tightness between the scraper plate 33 and the grooved roller 22.

[0042] In order to improve the stability of the scraper device and prevent jitter, a placement groove 354 is further provided on the fixed seat 31 of the scraper device. Both ends of the scraper plate seat 32 are placed in the placement groove 354. The fixed seat 31 of the scraper device performs an inclined horizontal displacement in the placement groove 354. Among them, the front end face of the fixed seat 31 of the scraper device is connected to the rib 351, and the side face and the bottom face of the fixed seat 31 of the scraper device are respectively connected to two mutually perpendicular steel plates, ensuring the stability of the two mutually perpendicular steel plates moving in the groove.

[0043] Embodiment 2

[0044] For the sake of simplicity of description, parts that are the same as those in other embodiments will not be described in detail again. Now, the structures different from those in other embodiments of the present invention will be mainly described. The difference between Embodiment 2 and Embodiment 1 lies in the different connection methods between the scraper plate seat 32 and the scraper plate 33.

[0045] Figure 6 It is a partial structural schematic diagram of the scraping device according to another embodiment of the present invention. As Figure 6 shown, the connection method of the scraper device according to another embodiment of the present invention will be described in detail.

[0046] In order to improve the stability of the scraper plate 33, the connection method between the scraper plate seat 32 and the scraper plate 33 adopts bolt connection. A number of fixing bolts for the scraper plate seat 32 and the scraper plate 33 are provided on the scraper plate 33. The bolt connection provides a strong clamping force through the tight fit of the bolt and the nut, ensuring a tight connection between the scraper plate seat 32 and the scraper plate 33 and effectively preventing loosening caused by vibration or external force during the working process.

[0047] When in use, the operator places the material above the smooth roller 21 and the grooved roller 22. The two rollers rotate relatively at different linear speeds. During the rotation of the rollers, due to the frictional force and adhesion between the material and the roller surface, residues are likely to accumulate on the surface of the grooved roller 22. At this time, the adjusting handle 353 can be rotated, and through the scraping device 3 with an inclined angle set, the tip of the scraper can accurately clean the residues in the grooves. Since the adjusting handle 353 is movably arranged in the mounting hole 352 and abuts against the scraper plate seat 32, when the adjusting handle 353 is rotated forward or backward, the adjusting handle 353 pushes the scraper plate 33 forward or backward to control the distance between the scraper plate 33 and the grooved roller 22, thereby controlling the tightness of cleaning the grooves. The operation is relatively convenient, ensuring the efficient removal of residues in the roller grooves and avoiding material accumulation.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0049] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A scraping device for the groove of a mixing mill roller, characterized in that: include: A frame (1) comprising a support frame (11) arranged symmetrically on both sides, wherein a base (12) for supporting is provided at the bottom of the support frame (11); A material pressing device (2), the material pressing device (2) being rotatably disposed between the support frames (11), comprising a smooth roller (21) and a grooved roller (22) disposed front and rear, wherein the outer wall of the grooved roller (22) is provided with a plurality of grooves (23); A scraper device (3), the scraper device (3) being arranged in front of the groove roller (22) and tilted upward and facing the outer wall of the groove roller (22), comprising a scraper device fixing seat (31) symmetrically fixedly mounted on both sides of the support frame (11), a scraper plate seat (32) being movably arranged on the scraper device fixing seat (31), a scraper plate (33) for cleaning the groove (23) being arranged on the top surface of the scraper plate seat (32), positioning structures (34) for limiting the movement of the scraper plate (33) being arranged at both ends of the scraper plate seat (32), and an adjustment structure (35) for adjusting the movement of the scraper plate (33) being arranged on the scraper device fixing seat (31).

2. The scraping device for the groove of a mixing mill roller according to claim 1, characterized in that: The outer wall of the smooth roller (21) is smooth and a smooth roller scraper (24) is provided at the bottom for cleaning the material on the smooth roller (21).

3. The scraping device for the groove of the roller of a mixing mill according to claim 2, characterized in that: The smooth roller scrapers (24) are arranged facing each other in the rotation direction of the smooth roller (21).

4. The scraping device for the groove of a mixing mill roller according to claim 1, characterized in that: The smooth roller (21) and the grooved roller (22) rotate in opposite directions.

5. The scraping device for the groove of the roller of a mixing mill according to claim 4, characterized in that: The rotation speed of the smooth roller (21) is faster than the rotation speed of the grooved roller (22).

6. The scraping device for the groove of the roller of a mixing mill according to claim 5, characterized in that: The scraper plate seat (32) and the scraper plate (33) are connected by at least one of welding connection and bolt connection.

7. The scraping device for the groove of a mixing mill roller according to claim 1, characterized in that: The positioning structure (34) comprises strip-shaped positioning holes (343) formed at both ends of the scraper plate seat (32), wherein a fixing bolt (341) for fixing the scraper plate seat (32) is provided through the strip-shaped positioning hole (343), and a positioning sheet (342) is sleeved on the fixing bolt (341), and the fixing bolt (341) is tightly connected to the scraper plate seat (32) via the positioning sheet (342).

8. The scraping device for the groove of a mixing mill roller according to claim 1, characterized in that: The adjustment structure (35) comprises a convex strip (351) provided on the scraper device fixing seat (31), a mounting hole (352) being provided on the convex strip (351), an adjustment handle (353) for adjusting the scraper plate seat (32) being provided in the mounting hole (352), and the adjustment handle (353) being movably disposed in the mounting hole (352).

9. The scraping device for the groove of a mixing mill roller according to claim 8, characterized in that: The adjustment handle (353) comprises an adjustment stem (3531) and an adjustment screw (3532) fixed on the adjustment stem (3531); one end of the adjustment screw (3532) extends out of the mounting hole (352) and abuts against the scraper plate seat (32).

10. The scraping device for the groove of a mixing mill roller according to claim 8, characterized in that: The scraper device fixing seat (31) is also provided with a placement groove (354), and both ends of the scraper plate seat (32) are placed in the placement groove (354).

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