Three-roller grinding machine capable of adjusting distance between rollers

Abstract

The utility model provides a three-roller grinding machine capable of adjusting the distance between rollers, which relates to the technical field of grinding instruments and comprises a base, a servo motor I and a servo motor II, supporting frames are fixedly connected to the left side and the right side of the upper end of the base, a positioning frame is arranged on the upper sides of the rear ends of the two supporting frames, a feeding pipe is installed at the center end of the positioning frame, a bearing is arranged in the front end of each supporting frame, and a first thin hydraulic rod and a second thin hydraulic rod are conveniently installed through the inner sides of the center ends and the rear ends of the two supporting frames. The first thin hydraulic rod and the second thin hydraulic rod are used for adjusting the distance between the middle roller and the rear roller, hydraulic control has extremely high precision, and the diversified requirements of different materials for grinding gaps can be rapidly responded and met; the problems that an existing three-roller grinding machine capable of adjusting the distance between the rollers is tedious in manual adjustment and low in precision are solved.

Description

Technical Field

[0001] This utility model belongs to the field of grinding equipment technology, and more specifically, it relates to a three-roll grinding machine with adjustable roller spacing. Background Technology

[0002] Adjustable roller spacing three-roll mills are widely used grinding equipment in industrial fields. They can precisely control the extrusion and shear forces on materials during the grinding process, thereby achieving precise control over the fineness of the grinding. For example, in ink production, pigment particles need to be ground to different finenesses according to different printing requirements. By adjusting the roller spacing, the ink can achieve the ideal fineness, ensuring the vibrancy and clarity of the printed products. However, currently commonly used three-roll mills adjust the roller spacing manually, such as by manually adjusting the spacing using a handwheel and screw. Each adjustment requires manual measurement, which is difficult to control precisely, has low repeatability, and is inefficient. Therefore, a new type of three-roll mill with adjustable roller spacing is needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a three-roll grinding machine with adjustable roller spacing, so as to solve the problems of cumbersome manual adjustment and low precision of existing three-roll grinding machines with adjustable roller spacing.

[0004] This utility model discloses a three-roll grinding machine with adjustable roller spacing, achieved through the following specific technical means:

[0005] A three-roll grinding machine with adjustable roller spacing includes a base, a servo motor one, and a servo motor two;

[0006] The upper left and right sides of the base are fixedly connected to support frames, and a positioning frame is provided on the upper rear side of the two sets of support frames. A feed pipe is installed at the center end of the positioning frame, and a bearing is provided inside the front end of the support frame. The first servo motor is located at the right rear end of the base, and the motor shaft of the first servo motor passes through the inside of the right support frame. The front end of the motor shaft of the first servo motor is clamped inside the bearing. The second servo motor is located at the left rear end of the base, and the motor shaft of the second servo motor passes through the inside of the left support frame. The front end of the motor shaft of the second servo motor is clamped inside the bearing.

[0007] Furthermore, the center end of the motor shaft of servo motor one and the rear end of the motor shaft of servo motor two are provided with annular grooves, and a connector is installed in the annular groove. The connector is provided with two sets of positioning holes, and two sets of positioning rods are connected in the annular groove. The positioning rods pass through the positioning holes provided on the connector, and a return spring is fitted on the positioning rod. The front end of the motor shaft of servo motor one is fixedly connected with bevel gear B.

[0008] Furthermore, the rear inner side of the two sets of support frames is provided with a rear roller, the left and right sides of the rear roller are inserted into the support frame, and a bevel gear E is fixedly connected to the right side of the rear roller. A bevel gear F is fixedly connected to the outside of the connecting part on the motor shaft of the servo motor, and the bevel gear F meshes with the bevel gear E.

[0009] Furthermore, a middle roller is provided on the inner side of the center end of the two sets of support frames. The left and right sides of the middle roller are inserted into the support frame. A bevel gear C is fixedly connected to the left side of the middle roller. A bevel gear D is fixedly connected to the outer side of the connecting part on the shaft of the servo motor. The bevel gear D meshes with the bevel gear C, and the number of teeth of the bevel gear D and the bevel gear C is less than that of the bevel gear F and the bevel gear E.

[0010] Furthermore, the front inner side of the two sets of support frames is provided with a front roller, the left and right sides of the front roller are clamped inside the support frame, and a bevel gear A is fixedly connected to the right side of the front roller. The bevel gear A meshes with the bevel gear B, and the number of teeth of the bevel gear A and the bevel gear B is less than that of the bevel gear D and the bevel gear C.

[0011] Furthermore, a thin hydraulic rod is installed on the inner side of the center end of each of the two sets of support frames. A positioning tube is connected to the thin hydraulic rod. The left and right sides of the middle roller are respectively clamped inside the positioning tubes of the two sets of thin hydraulic rods. A second thin hydraulic rod is installed inside the rear end of each of the two sets of support frames. A positioning tube is connected to the second thin hydraulic rod. The left and right sides of the rear roller are respectively clamped inside the positioning tubes of the two sets of thin hydraulic rods.

[0012] Furthermore, the front inner side of the two sets of support frames is connected to a feeding plate, the rear side of the feeding plate is provided with a groove, and a scraper is installed in the groove on the rear side of the feeding plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up fine hydraulic rod one and fine hydraulic rod two, this utility model facilitates the convenient installation of fine hydraulic rod one and fine hydraulic rod two through the center end and rear inner side of the two sets of support frames. Fine hydraulic rod one and fine hydraulic rod two are respectively responsible for adjusting the distance between the middle roller and the rear roller. The hydraulic control has extremely high precision and can quickly respond to and meet the diverse needs of different materials for grinding gap.

[0015] 2. This utility model, by setting up servo motor one and servo motor two, and installing servo motor one and servo motor two on the upper rear side of the base, changes the rotation direction of servo motor one and servo motor two, thereby changing the rotation direction of the front roller, middle roller and rear roller, which is suitable for grinding more different materials.

[0016] 3. This utility model features a scraper that is secured in a groove on the rear side of the feed plate. This design makes it easy to disassemble and replace the scraper when it wears out due to prolonged use, thanks to its secure mounting in the groove of the feed plate. This allows for quick replacement of the scraper. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural schematic diagram of the support frame of this utility model.

[0019] Figure 3 This is a structural schematic diagram of servo motor one and servo motor two of this utility model.

[0020] Figure 4 This is a schematic diagram of the material cutting plate of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Base; 2. Support frame; 201. Bearing; 3. Positioning frame; 4. Feed pipe; 5. Unloading plate; 6. Front roller; 601. Bevel gear A; 7. Middle roller; 701. Bevel gear C; 8. Rear roller; 801. Bevel gear E; 9. Servo motor one; 901. Bevel gear B; 902. Bevel gear F; 10. Servo motor two; 1001. Bevel gear D; 11. Fine hydraulic rod one; 12. Fine hydraulic rod two; 13. Scraper; 14. Positioning rod; 15. Return spring; 16. Connecting parts. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example:

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] This utility model provides a three-roll grinding machine with adjustable roller spacing, including a base 1, a servo motor 9, and a servo motor 10;

[0027] Support frames 2 are fixedly connected to the upper left and right sides of the base 1, and positioning frames 3 are provided on the upper rear side of the two sets of support frames 2. A feed pipe 4 is installed at the center end of the positioning frame 3. A bearing 201 is provided inside the front end of the support frame 2. Servo motor 19 is placed at the rear right side of the base 1. The motor shaft of servo motor 19 passes through the inside of the right support frame 2. The front end of the motor shaft of servo motor 19 is clamped inside the bearing 201. Servo motor 20 is placed at the rear left side of the base 1. The motor shaft of servo motor 20 passes through the inside of the left support frame 2. The front end of the motor shaft of servo motor 20 is clamped inside the bearing 201.

[0028] Among them, such as Figure 2 and Figure 3 As shown, the center end of the motor shaft of servo motor 9 and the rear end of the motor shaft of servo motor 10 are provided with annular grooves, and a connector 16 is fitted in the annular groove. The connector 16 is provided with two sets of positioning holes, and two sets of positioning rods 14 are connected in the annular groove. The positioning rods 14 pass through the positioning holes provided on the connector 16, and a return spring 15 is fitted on the positioning rod 14. The front end of the motor shaft of servo motor 9 is fixedly connected with a bevel gear B901. The rear inner side of the rear end of the two sets of support frames 2 is provided with a rear roller 8, and the left and right sides of the rear roller 8 are inserted into the support frame. Inside the servo motor 2, a bevel gear E801 is fixedly connected to the right side of the rear roller 8. A bevel gear F902 is fixedly connected to the outside of the connecting piece 16 on the motor shaft of servo motor 19. The bevel gear F902 meshes with the bevel gear E801. A middle roller 7 is provided on the inner side of the center end of the two sets of support frames 2. The left and right sides of the middle roller 7 pass into the interior of the support frame 2. A bevel gear C701 is fixedly connected to the left side of the middle roller 7. A bevel gear D1001 is fixedly connected to the outside of the connecting piece 16 on the motor shaft of servo motor 210. The bevel gear D1001 meshes with the bevel gear E801. Gear C701 meshes, and the number of teeth on bevel gears D1001 and C701 is less than that on bevel gears F902 and E801. A front roller 6 is located on the inner side of the front end of each of the two sets of support frames 2. The left and right sides of the front roller 6 are fitted inside the support frame 2, and a bevel gear A601 is fixedly connected to the right side of the front roller 6. Bevel gear A601 meshes with bevel gear B901, and the number of teeth on bevel gears A601 and B901 is less than that on bevel gears D1001 and C701. This is achieved through servo motor 1 and servo motor 2. Ten dual servo motors drive the rollers, which are paired with bevel gear transmissions. The power transmission is stable and reliable. The combination of bevel gears with different numbers of teeth allows the front roller 6, middle roller 7, and rear roller 8 to form a speed difference, generating a suitable shearing force, which is beneficial for material grinding. The rotation direction of servo motor 19 and servo motor 210 can be changed, so that the rotation direction of the front roller 6, middle roller 7, and rear roller 8 can be changed. This is suitable for grinding a wider variety of materials. For example, when grinding some special materials, the rotation direction of the front roller 6, middle roller 7, and rear roller 8 can be made the same.

[0029] Among them, such as Figure 2 As shown, a thin hydraulic rod 11 is installed on the inner side of the center end of each of the two sets of support frames 2. A positioning tube is connected to the thin hydraulic rod 11. The left and right sides of the middle roller 7 are respectively clamped inside the positioning tubes on the two sets of thin hydraulic rods 11. A thin hydraulic rod 22 is installed inside the rear end of each of the two sets of support frames 2. A positioning tube is connected to the thin hydraulic rod 22. The left and right sides of the rear roller 8 are respectively clamped inside the positioning tubes on the two sets of thin hydraulic rod 22. The thin hydraulic rods 11 and 212 are responsible for adjusting the distance between the middle roller 7 and the rear roller 8. The hydraulic control has extremely high precision and can quickly respond to and meet the diverse needs of different materials for grinding gap. During the distance adjustment process, the return spring 15 can effectively prevent the bevel gear from disengaging due to the change of roller position, thereby ensuring that the entire transmission system always operates stably and ensuring the continuity and efficiency of grinding work.

[0030] Among them, such as Figure 4 As shown, the inner front end of the two sets of support frames 2 is connected to the feed plate 5. The feed plate 5 has a groove on the rear side, and a scraper 13 is installed in the groove on the rear side of the feed plate 5. Through the scraper 13, the ground material can be accurately and timely scraped off the roller surface during the grinding process, and the material can be guided to be discharged smoothly, ensuring the continuity and smoothness of the output, thereby improving the overall grinding efficiency. When the scraper 13 wears out due to long-term use, thanks to its structural design of being installed in the groove of the feed plate, the disassembly and replacement operation is simple and easy, and the scraper replacement work can be completed quickly, reducing equipment downtime and maintaining a high-efficiency and stable production state.

[0031] The specific usage and function of this embodiment are as follows:

[0032] like Figures 1 to 4As shown, in this invention, materials are added through the feed pipe 4 and driven by dual servo motors servo motor 9 and servo motor 10, respectively, with bevel gear transmission. This ensures stable and reliable power transmission. The combination of bevel gears with different numbers of teeth allows for a speed difference between the front roller 6, the middle roller 7, and the rear roller 8, generating a suitable shearing force, which is beneficial for material grinding. Furthermore, the rotation direction of servo motors 9 and 10 can be changed, altering the rotation direction of the front roller 6, the middle roller 7, and the rear roller 8. This makes it suitable for grinding a wider variety of materials, for example, in grinding... For certain special materials, the front roller 6, middle roller 7, and rear roller 8 rotate in the same direction. Fine hydraulic rod 11 and fine hydraulic rod 12 are used to adjust the distance between the middle roller 7 and the rear roller 8, respectively. The hydraulic control has extremely high precision and can quickly respond to and meet the diverse needs of different materials for grinding gap. During the distance adjustment process, the return spring 15 can effectively prevent the bevel gear from disengaging due to changes in the roller position, thereby ensuring that the entire transmission system always operates stably and ensuring the continuity and efficiency of the grinding work.

[0033] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A three-roll mill with adjustable roll spacing, characterized in that: It include base (1), servo motor one (9) and servo motor two (10); The upper end of the base (1) is fixedly connected with support frames (2) on the left and right sides, and a positioning frame (3) is arranged on the upper side of the rear end of the two support frames (2), a feeding pipe (4) is installed at the center end of the positioning frame (3), bearings (201) are arranged in the front end of the support frames (2), the servo motor one (9) is arranged at the right rear end of the base (1), the motor shaft of the servo motor one (9) penetrates into the right support frame (2), the motor shaft of the servo motor one (9) is clamped in the bearing (201), and the motor shaft of the servo motor two (10) penetrates into the left support frame (2), the motor shaft of the servo motor two (10) is clamped in the bearing (201).

2. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The center end of the motor shaft of the servo motor one (9) and the rear end of the motor shaft of the servo motor two (10) are provided with annular grooves, and connecting pieces (16) are clamped in the annular grooves, the connecting pieces (16) are provided with two groups of positioning holes, two groups of positioning rods (14) are connected in the annular grooves, the positioning rods (14) penetrate through the positioning holes in the connecting pieces (16), reset springs (15) are sleeved on the positioning rods (14), and the front end of the motor shaft of the servo motor one (9) is fixedly connected with a bevel gear B (901).

3. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The rear ends of the two groups of support frames (2) are provided with rear roller cylinders (8), the left and right sides of the rear roller cylinders (8) penetrate into the support frames (2), a bevel gear E (801) is fixedly connected to the right side of the rear roller cylinder (8), a bevel gear F (902) is fixedly connected to the outer side of the connecting piece (16) on the motor shaft of the servo motor one (9), and the bevel gear F (902) is engaged with the bevel gear E (801).

4. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The center ends of the two groups of support frames (2) are provided with middle roller cylinders (7), the left and right sides of the middle roller cylinders (7) penetrate into the support frames (2), a bevel gear C (701) is fixedly connected to the left side of the middle roller cylinder (7), a bevel gear D (1001) is fixedly connected to the outer side of the connecting piece (16) on the motor shaft of the servo motor two (10), the bevel gear D (1001) is engaged with the bevel gear C (701), and the number of teeth of the bevel gear D (1001) and the bevel gear C (701) is less than that of the bevel gear F (902) and the bevel gear E (801).

5. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The front ends of the two groups of support frames (2) are provided with front roller cylinders (6), the left and right sides of the front roller cylinders (6) are clamped in the support frames (2), a bevel gear A (601) is fixedly connected to the right side of the front roller cylinder (6), the bevel gear A (601) is engaged with the bevel gear B (901), and the number of teeth of the bevel gear A (601) and the bevel gear B (901) is less than that of the bevel gear D (1001) and the bevel gear C (701).

6. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The inner side of the center end of the two groups of support frames (2) is provided with a fine hydraulic rod I (11), and the fine hydraulic rod I (11) is connected with a positioning pipe. The left and right sides of the middle roller (7) are respectively clamped in the inner sides of the positioning pipes of the two groups of fine hydraulic rod I (11). The inner sides of the rear ends of the two groups of support frames (2) are provided with a fine hydraulic rod II (12), and the fine hydraulic rod II (12) is connected with a positioning pipe. The left and right sides of the rear roller (8) are respectively clamped in the inner sides of the positioning pipes of the two groups of fine hydraulic rod II (12).

7. A three-roll mill with adjustable roll spacing as claimed in claim 1, characterized in that: The front end of the two groups of support frames (2) is connected with a discharging plate (5), and the rear side of the discharging plate (5) is provided with a groove. The rear side of the discharging plate (5) is clamped with a scraper (13).

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