Roller mill

Abstract

The utility model belongs to the technical field of roller grinding, disclose a kind of roll grinder, roll grinder includes the first roller and the second roller of parallel arrangement, second roller can be moved towards the side close to first roller or towards the side away from first roller. First bearing and second bearing together constitute the bearing structure for supporting the rotation of second roller, elastic member can be along the radial direction of second roller, towards the side away from first roller to mounting frame exert thrust, to thereby the outer ring of second bearing exert pressure, simultaneously, swing arm can be towards the side close to first roller to the outer ring of first bearing exert pressure, whereby it can eliminate the play of bearing structure for supporting the rotation of second roller, to thereby avoid in grinding process second roller due to bearing play and produce tiny radial displacement, to further ensure that the interval of first roller and second roller can keep constant after adjustment, and will not deviate from preset value, whereby guarantee the dispersion of raw material after grinding meet the requirement.

Description

Technical Field

[0001] This utility model relates to the field of roller grinding technology, and in particular to a roller grinding machine. Background Technology

[0002] In the production of products such as electronic adhesives or conductive adhesives, it is necessary to first grind and disperse the slurry used as raw material or grind, crush and disperse the raw material cake to obtain an intermediate. Then, the intermediate is further processed.

[0003] As described above, existing technologies generally use roller mills to grind slurries or cakes. Specifically, a roller mill includes two parallel rollers. Under the squeezing and friction of the two rollers, the raw materials can be fully ground and dispersed. Since different production needs require different degrees of dispersion of intermediates, manufacturers typically have multiple roller mills. Different roller mills have different spacing between the two rollers, thus enabling the dispersion of intermediates with different degrees of dispersion. However, having multiple roller mills in stock leads to higher production costs.

[0004] To address this, existing roller mills are equipped with a spacing adjustment structure to regulate the distance between the two rollers. Specifically, one roller remains fixed in position, while the spacing adjustment structure controls the other roller to move closer to or further away from the fixed roller. This allows for precise adjustment of the distance between the two rollers according to actual needs, effectively controlling the dispersion of the intermediate material obtained from the grinding process. Consequently, when production demands change, manufacturers only need to adjust the spacing between the two rollers accordingly, eliminating the need to stock multiple roller mills and effectively reducing production costs.

[0005] However, for movable rollers, if the bearings supporting their rotation have clearance, the rollers will undergo slight radial displacement due to the squeezing action of the raw materials during the grinding process of the roller mill. This will cause the distance between the two rollers to deviate from the preset value, thereby affecting the dispersion of the ground raw materials.

[0006] Therefore, the above problems urgently need to be solved. Utility Model Content

[0007] The purpose of this invention is to provide a roller mill to solve the problem that the distance between the two rollers deviates from the preset value, thereby affecting the dispersion of the raw materials after grinding.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A roller mill, comprising a first roller and a second roller arranged in parallel, further comprising:

[0010] A support frame, wherein the first roller is rotatably connected to the support frame;

[0011] The spacing adjustment mechanism includes a swing arm and a drive module. A first bearing is sleeved on the outer periphery of the second roller. The swing arm is sleeved on the outer periphery of the first bearing. The second roller is rotatably connected to the swing arm through the first bearing. The side of the swing arm near the second roller is rotatably connected to the support frame through a first rotating shaft. The first rotating shaft is parallel to the first roller. The drive module is configured to drive the swing arm to rotate around the axis of the first rotating shaft.

[0012] The clearance elimination mechanism includes a mounting frame and an elastic element. A second bearing is sleeved on the outer periphery of the second roller. The second bearing and the first bearing are arranged along the axial direction of the second roller. The mounting frame is sleeved on the outer periphery of the second bearing. The elastic element is installed between the mounting frame and the support frame and applies a thrust to the mounting frame along the radial direction of the second roller toward the side away from the first roller.

[0013] Preferably, the mounting frame is rotatable relative to the second bearing, and the elastic element includes two compression springs, which are respectively disposed on both sides of the mounting frame in the vertical direction. Both compression springs are disposed in the horizontal direction between the mounting frame and the support frame, and the distance between the two compression springs and the axis of the second roller is equal.

[0014] Preferably, the drive module includes a cam and a second rotating shaft. The cam is sleeved on the outer periphery of the second rotating shaft, which is parallel to the first roller and rotatably connected to the support frame. One end of the swing arm remains in contact with the wheel surface of the cam.

[0015] Preferably, the drive module further includes a tension spring, which is installed between the swing arm and the support frame, and the tension spring and the cam are located on the same side of the swing arm.

[0016] Preferably, one end of the rocker arm is provided with a pin, and the rocker arm abuts against the wheel surface of the cam through the pin.

[0017] Preferably, the pin abuts against the wheel surface of the cam via a spherical surface.

[0018] Preferably, the cam has a stop protruding from its wheel surface.

[0019] Preferably, a handwheel is provided at the end of the second rotating shaft.

[0020] Preferably, the second roller is provided with the spacing adjustment mechanism and the clearance elimination mechanism at both ends.

[0021] Preferably, the first roller is provided with the second roller on both sides of its radial direction, and the two second rollers are respectively provided with the spacing adjustment mechanism and the clearance elimination mechanism.

[0022] The beneficial effects of this utility model are:

[0023] In this invention, the second roller can move towards the side closer to the first roller or towards the side farther from the first roller, thus allowing the distance between the first and second rollers to be flexibly adjusted according to actual production needs. Furthermore, the first and second bearings jointly support the rotation of the second roller; that is, the first and second bearings together form a bearing structure for supporting the rotation of the second roller. The elastic element can apply a thrust to the mounting frame radially away from the first roller, thereby applying pressure to the outer ring of the second bearing in the same direction. Simultaneously, under the pushing action of the elastic element, the swing arm can apply pressure to the outer ring of the first bearing in the direction closer to the first roller. This eliminates the clearance in the bearing structure supporting the rotation of the second roller, preventing minor radial displacement of the second roller during grinding due to bearing clearance. This ensures that the distance between the first and second rollers remains constant after adjustment by the spacing adjustment mechanism, without deviating from the preset value, thus guaranteeing that the dispersion of the ground raw material meets the requirements. Attached Figure Description

[0024] Figure 1 This is one of the structural schematic diagrams of the roller mill in the embodiments of this utility model;

[0025] Figure 2 This is the second schematic diagram of the structure of the roller mill in this embodiment of the present invention;

[0026] Figure 3 This is the third schematic diagram of the structure of the roller mill in this embodiment of the present invention;

[0027] Figure 4 This is one of the structural schematic diagrams of the second roller, the spacing adjustment mechanism, and the clearance elimination mechanism in this embodiment of the present utility model;

[0028] Figure 5 This is the second schematic diagram of the structure of the second roller, the spacing adjustment mechanism, and the clearance elimination mechanism in this embodiment of the present invention;

[0029] Figure 6 This is a force diagram of the first bearing and the second bearing in an embodiment of this utility model.

[0030] In the picture:

[0031] 11. First roller; 12. Second roller; 121. First bearing; 122. Second bearing;

[0032] 2. Support frame;

[0033] 3. Spacing adjustment mechanism; 31. Swing arm; 311. First rotating shaft; 312. Pin; 3121. Spherical surface; 32. Drive module; 321. Cam; 3211. Stop block; 322. Second rotating shaft; 3221. Handwheel; 323. Tension spring;

[0034] 4. Clearance elimination mechanism; 41. Mounting bracket; 42. Elastic element; 421. Compression spring. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] Please see Figures 1 to 6 This embodiment provides a roller mill, which includes a first roller 11 and a second roller 12 arranged in parallel. Under the squeezing and friction of the first roller 11 and the second roller 12, the raw material can be ground and dispersed.

[0040] In addition to the first roller 11 and the second roller 12, the roller grinding machine also includes a support frame 2, a spacing adjustment mechanism 3 and a clearance elimination mechanism 4, with the first roller 11 rotatably connected to the support frame 2.

[0041] The spacing adjustment mechanism 3 includes a swing arm 31 and a drive module 32. A first bearing 121 is sleeved on the outer periphery of the second roller 12. The swing arm 31 is sleeved on the outer periphery of the first bearing 121. The second roller 12 is rotatably connected to the swing arm 31 through the first bearing 121. The side of the swing arm 31 closest to the second roller 12 is rotatably connected to the support frame 2 through a first rotating shaft 311. The first rotating shaft 311 is parallel to the first roller 11. The drive module 32 is configured to drive the swing arm 31 to rotate around the axis of the first rotating shaft 311, thereby causing the second roller 12 to move toward the side closer to the first roller 11, or to move the second roller 12 toward the side farther away from the first roller 11. This allows for precise adjustment of the spacing between the first roller 11 and the second roller 12.

[0042] As described above, in this embodiment, the spacing between the first roller 11 and the second roller 12 is adjusted by the spacing adjustment mechanism 3, so that the spacing between the first roller 11 and the second roller 12 can be flexibly set according to actual needs, thereby controlling the dispersion of the intermediate obtained by grinding. In this embodiment, the roller grinding machine itself has the function of adjusting the spacing between the first roller 11 and the second roller 12.

[0043] In addition, the clearance elimination mechanism 4 includes a mounting frame 41 and an elastic element 42. A second bearing 122 is sleeved on the outer periphery of the second roller 12. The second bearing 122 and the first bearing 121 are arranged along the axial direction of the second roller 12. The mounting frame 41 is sleeved on the outer periphery of the second bearing 122 and can move together with the second roller 12. The elastic element 42 is installed between the mounting frame 41 and the support frame 2 and applies a thrust to the mounting frame 41 along the radial direction of the second roller 12 toward the side away from the first roller 11.

[0044] Based on the above, in this embodiment, the second roller 12 can move toward the side closer to the first roller 11 or toward the side farther away from the first roller 11, so that the distance between the first roller 11 and the second roller 12 can be flexibly adjusted according to actual production needs. Furthermore, for the second roller 12, the first bearing 121 and the second bearing 122 jointly support its rotation. That is, the first bearing 121 and the second bearing 122 together form a bearing structure for supporting the rotation of the second roller 12. The elastic element 42 can apply a pushing force to the mounting frame 41 along the radial direction of the second roller 12 away from the first roller 11, thereby applying pressure to the outer ring of the second bearing 122 away from the first roller 11. At the same time, under the pushing action of the elastic element 42, the swing arm 31 can apply pressure to the outer ring of the first bearing 121 towards the side closer to the first roller 11. This eliminates the clearance of the bearing structure supporting the rotation of the second roller 12, thereby preventing the second roller 12 from generating a small radial displacement due to bearing clearance during the grinding process. This ensures that the distance between the first roller 11 and the second roller 12 remains constant after being adjusted by the distance adjustment mechanism 3, and does not deviate from the preset value, thus ensuring that the dispersion of the raw material after grinding meets the requirements.

[0045] Specifically, for the bearing structure consisting of the first bearing 121 and the second bearing 122 used to support the rotation of the second roller 12, under the action of the elastic member 42, the mounting bracket 41 applies a first thrust F1 to the bearing structure along the radial direction of the second roller 12, and correspondingly, the swing arm 31 can apply a second thrust F2 to the bearing structure. The directions of the first thrust F1 and the second thrust F2 are opposite, thereby eliminating the clearance of the bearing structure consisting of the first bearing 121 and the second bearing 122.

[0046] Based on the above description, in order to enable the swing arm 31 to rotate around the axis of the first rotating shaft 311, in this embodiment, the drive module 32 includes a cam 321 and a second rotating shaft 322. The cam 321 is sleeved on the outer periphery of the second rotating shaft 322. The second rotating shaft 322 is parallel to the first roller 11 and is rotatably connected to the support frame 2. The cam 321 can rotate with the second rotating shaft 322. Moreover, one end of the swing arm 31 remains in contact with the wheel surface of the cam 321.

[0047] Therefore, as the second rotating shaft 322 rotates, the rocker arm 31 can abut against various positions on the wheel surface of the cam 321. As the larger diameter position on the cam 321 abuts against the rocker arm 31, the end of the rocker arm 31 that abuts against the cam 321 can rotate around the axis of the first rotating shaft 311 toward the side away from the second rotating shaft 322, thereby driving the second roller 12 to move toward the side closer to the first roller 11, thereby reducing the distance between the first roller 11 and the second roller 12.

[0048] When the smaller diameter position of the cam 321 abuts against the rocker arm 31, since one end of the rocker arm 31 can maintain contact with the wheel surface of the cam 321, the end of the rocker arm 31 that abuts against the cam 321 rotates around the axis of the first rotating shaft 311 toward the side closer to the second rotating shaft 322, thereby driving the second roller 12 to move toward the side away from the first roller 11, thereby increasing the distance between the first roller 11 and the second roller 12.

[0049] Based on the above, this embodiment can precisely control the distance between the first roller 11 and the second roller 12 by controlling the rotation angle of the second rotating shaft 322.

[0050] As described above, the drive module 32 also includes a tension spring 323, which is installed between the swing arm 31 and the support frame 2. The tension spring 323 and the cam 321 are located on the same side of the swing arm 31. Under the action of the tension spring 323, one end of the swing arm 31 can always remain in contact with the wheel surface of the cam 321. Thus, when the cam 321 is in contact with the swing arm 31 at a position with a smaller diameter, the tension spring 323 can pull the end of the swing arm 31 near the cam 321 to rotate around the axis of the first rotating shaft 311 toward the side closer to the second rotating shaft 322, thereby driving the second roller 12 to move toward the side away from the first roller 11, thereby increasing the distance between the first roller 11 and the second roller 12.

[0051] Furthermore, a pin 312 is provided at one end of the rocker arm 31. The rocker arm 31 abuts against the wheel surface of the cam 321 through the pin 312, thereby reducing the friction between the rocker arm 31 and the cam 321, thus ensuring that the rocker arm 31 can slide smoothly along the wheel surface of the cam 321, thereby ensuring the stability and reliability of the operation of the spacing adjustment mechanism 3.

[0052] Moreover, the pin 312 abuts against the wheel surface of the cam 321 through the spherical surface 3121. The contact design of the spherical surface 3121 can further improve the smoothness of sliding between the rocker arm 31 and the cam 321, while reducing the wear of the cam 321 and extending its service life.

[0053] In addition, pin 312 can also ensure that the swing arm 31 and cam 321 maintain stable contact, thereby avoiding shaking or separation during the grinding process, and further improving the working stability and grinding accuracy of the roller grinder.

[0054] In addition, the wheel surface of the cam 321 is provided with a stop 3211. The stop 3211 is used to limit the maximum rotation amplitude of the swing arm 31, thereby preventing the second roller 12 from getting too close to the first roller 11 and causing them to collide or wear excessively, and preventing the second roller 12 from getting too far away from the first roller 11 and affecting the grinding effect. That is, the stop 3211 not only improves the safety of the roller grinder, but also further ensures its grinding accuracy and working stability.

[0055] In addition, a handwheel 3221 is provided at the end of the second rotating shaft 322. The operator can manually rotate the second rotating shaft 322 by using the handwheel 3221, thereby driving the cam 321 to rotate, which in turn drives the swing arm 31 to swing, thereby realizing flexible adjustment of the distance between the first roller 11 and the second roller 12.

[0056] Furthermore, in this embodiment, the mounting frame 41 is rotatable relative to the second bearing 122. The elastic element 42 includes two compression springs 421, which are respectively disposed on both sides of the mounting frame 41 in the vertical direction. Both compression springs 421 are disposed in the horizontal direction between the mounting frame 41 and the support frame 2, and the distance between the two compression springs 421 and the axis of the second roller 12 is equal. Thus, during the process of the mounting frame 41 moving together with the second roller 12, the two compression springs 421 can always maintain a stable thrust on the mounting frame 41, thereby ensuring that the clearance of the bearing structure used to support the rotation of the second roller 12 can be effectively eliminated.

[0057] Furthermore, since the two compression springs 421 are respectively disposed on both sides of the mounting frame 41 along the vertical direction and are equally spaced from the axis of the second roller 12, in this embodiment, the thrust of the elastic element 42 on the mounting frame 41 can be more balanced, thereby ensuring that the clearance of the bearing structure used to support the rotation of the second roller 12 can be effectively eliminated.

[0058] Furthermore, in this embodiment, a second roller 12 is provided on both sides of the first roller 11 along its radial direction. That is, the roller grinder in this embodiment is a three-roller mill. Each of the two second rollers 12 is provided with a spacing adjustment mechanism 3 and a clearance elimination mechanism 4. Thus, an independent grinding area is formed between the first roller 11 and the two second rollers 12. This embodiment can ensure that the spacing of each grinding area can be flexibly adjusted according to actual needs, thereby greatly improving the applicability and flexibility of the roller grinder. Moreover, the clearance of the bearing structure corresponding to the two second rollers 12 can be effectively eliminated, thereby ensuring that the spacing of each grinding area can remain constant after adjustment and will not deviate from the preset value.

[0059] Furthermore, both ends of the second roller 12 are provided with a gap adjustment mechanism 3 and a clearance elimination mechanism 4, which enables more precise control of the gap between the second roller 12 and the first roller 11.

[0060] It is worth noting that the two spacing adjustment mechanisms 3, which are respectively located at both ends of the second roller 12, share the same second rotating shaft 322.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A roller mill, comprising a first roller (11) and a second roller (12) arranged in parallel, characterized in that, The roller mill also includes: Support frame (2), the first roller (11) is rotatably connected to the support frame (2); The spacing adjustment mechanism (3) includes a swing arm (31) and a drive module (32). A first bearing (121) is sleeved on the outer periphery of the second roller (12). The swing arm (31) is sleeved on the outer periphery of the first bearing (121). The second roller (12) is rotatably connected to the swing arm (31) through the first bearing (121). The side of the swing arm (31) near the second roller (12) is rotatably connected to the support frame (2) through a first rotating shaft (311). The first rotating shaft (311) is parallel to the first roller (11). The drive module (32) is configured to drive the swing arm (31) to rotate around the axis of the first rotating shaft (311). The clearance elimination mechanism (4) includes a mounting frame (41) and an elastic element (42). A second bearing (122) is sleeved on the outer periphery of the second roller (12). The second bearing (122) and the first bearing (121) are arranged along the axial direction of the second roller (12). The mounting frame (41) is sleeved on the outer periphery of the second bearing (122). The elastic element (42) is installed between the mounting frame (41) and the support frame (2) and applies a thrust to the mounting frame (41) along the radial direction of the second roller (12) toward the side away from the first roller (11).

2. The roller mill according to claim 1, characterized in that, The mounting bracket (41) is rotatable relative to the second bearing (122). The elastic element (42) includes two compression springs (421). The two compression springs (421) are respectively disposed on both sides of the mounting bracket (41) in the vertical direction. The two compression springs (421) are disposed in the horizontal direction between the mounting bracket (41) and the support frame (2), and the distance between the two compression springs (421) and the axis of the second roller (12) is equal.

3. The roller mill according to claim 1, characterized in that, The drive module (32) includes a cam (321) and a second rotating shaft (322). The cam (321) is sleeved on the outer periphery of the second rotating shaft (322). The second rotating shaft (322) is parallel to the first roller (11) and rotatably connected to the support frame (2). One end of the swing arm (31) remains in contact with the wheel surface of the cam (321).

4. The roller mill according to claim 3, characterized in that, The drive module (32) also includes a tension spring (323), which is installed between the swing arm (31) and the support frame (2). The tension spring (323) and the cam (321) are located on the same side of the swing arm (31).

5. The roller mill according to claim 3, characterized in that, One end of the swing arm (31) is provided with a pin (312), and the swing arm (31) abuts against the wheel surface of the cam (321) through the pin (312).

6. The roller mill according to claim 5, characterized in that, The pin (312) abuts against the wheel surface of the cam (321) via a spherical surface (3121).

7. The roller mill according to claim 3, characterized in that, The cam (321) has a stop (3211) protruding from its wheel surface.

8. The roller mill according to claim 3, characterized in that, A handwheel (3221) is provided at the end of the second rotating shaft (322).

9. The roller mill according to claim 1, characterized in that, The second roller (12) is provided with the spacing adjustment mechanism (3) and the clearance elimination mechanism (4) at both ends.

10. The roller mill according to claim 1, characterized in that, The first roller (11) is provided with the second roller (12) on both sides of its radial direction, and the two second rollers (12) are respectively provided with the spacing adjustment mechanism (3) and the clearance elimination mechanism (4).

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