Precise open mill

Abstract

The utility model provides a precise open mill, which belongs to the technical field of open mills and comprises a supporting seat, two groups of rotating rollers, two groups of rotating rollers and two groups of positioning rods, driving boxes are respectively arranged at left and right ends of the top of the supporting seat; the two groups of rotating rollers are arranged in parallel between the two driving boxes at intervals front and back; two ends of one group of rotating rollers correspondingly extend into the two driving boxes and are connected with moving seats, so that the rotating rollers form moving rollers; the other group of rotating rollers are defined as fixed rollers; a speed difference exists between the movable roller and the fixed roller; the two groups of first driving assemblies are correspondingly arranged in the two driving boxes and are correspondingly connected with the two moving seats; the first driving assembly is used for driving the moving roller to get close to or away from the fixed roller through the moving seat; and the two groups of positioning rods correspondingly penetrate into the two driving boxes and are connected with the corresponding moving seats after the moving rollers move in place. The precise open mill provided by the utility model is simple and time-saving and labor-saving to operate, the stability is good when the movable roller moves and operates, and the smelting effect can be improved.

Description

Precision open mill Technical Field

[0001] This utility model belongs to the field of open mill technology, and more specifically, relates to a precision open mill. Background Technology

[0002] Precision open mills are commonly used in the production and processing of plastics, rubber, or cable materials. The open mill is equipped with two sets of rotating rollers. The two sets of rotating rollers can melt the material to be refined through the heating device inside the rotating rollers, and squeeze and tear the material to be refined that is conveyed to the relative gap between them by rotation.

[0003] In existing technologies, the moving roller is often moved by manually rotating a lead screw. The moving roller is equipped with a heating component inside and a support and drive device on the outside. However, the moving roller is unstable after it is moved into place. This causes the moving roller to continuously come into contact with and separate from the material to be smelted, affecting the heat transfer on the moving roller and thus reducing the smelting effect. Summary of the Invention

[0004] The purpose of this invention is to provide a precision open mill, which aims to solve the technical problem that the moving roller of the open mill is unstable after it is moved into place, thus affecting the melting effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a precision open mill, comprising:

[0006] The support base has a drive box at each of the left and right ends of the top.

[0007] Two sets of rotating rollers are spaced apart and parallel to each other between the two drive boxes; one set of rotating rollers has its two ends extending into the two drive boxes and is connected to a movable seat so that the rotating roller becomes a movable roller; the other set of rotating rollers is defined as a fixed roller; and there is a speed difference between the movable roller and the fixed roller.

[0008] Two sets of first drive components are correspondingly disposed within the two drive boxes and connected to the two movable seats; the first drive components are used to drive the movable roller closer to or away from the fixed roller via the movable seats; and

[0009] Two sets of positioning rods are inserted into the two drive boxes respectively, and are connected to the corresponding moving seats after the moving roller moves into place.

[0010] In one possible implementation, each set of the positioning rods includes:

[0011] Two screws extend along the axis perpendicular to the rotating roller and are arranged opposite each other. One end of each screw passes through the wall of the drive box and is screwed onto the corresponding movable seat. The other end is provided with a knob.

[0012] A limiting nut is screwed onto the outside of the screw extending from the drive housing and abuts against the outer wall of the drive housing.

[0013] In one possible implementation, the movable seat includes:

[0014] A movable plate is slidably disposed within the drive box along an axis perpendicular to the rotating roller; the movable plate is connected to the power output end of the first drive assembly.

[0015] The mounting base is fixed to the top of the movable plate; the mounting base is correspondingly connected to the end of the movable roller.

[0016] In some embodiments, one of the mounting bases is provided with a first variable frequency motor, and the other mounting base is provided with an auxiliary shaft. One end of the moving roller is fixedly connected to the power output shaft of the first variable frequency motor, and the other end is fixedly connected to the auxiliary shaft. Both ends of the moving roller are connected to the corresponding mounting base through the first variable frequency motor and the auxiliary shaft.

[0017] For example, the drive box is provided with clearance holes extending along the sliding direction of the moving plate, and the two ends of the moving roller pass through the corresponding clearance holes;

[0018] The two ends of the moving roller are respectively provided with first limiting plates, one side of the first limiting plate is attached to the outer side wall of the drive box and covers the clearance hole.

[0019] In some embodiments, one side of the mounting base is fitted against the inner wall of the drive box, and the mounting base and the first limiting plate are limited to the inner and outer sides of the drive box wall.

[0020] For example, the bottom wall of the drive box is provided with multiple slide rails, which are spaced apart along the axial direction of the rotating roller; the bottom of the moving plate is provided with multiple slide grooves that correspond one-to-one with the multiple slide rails, and the slide grooves are slidably connected to the corresponding slide rails.

[0021] In one possible implementation, the first driving component includes:

[0022] The second drive motor is located below the moving roller in the vertical direction;

[0023] Rotate the lead screw, with one end fixed to the power output shaft of the second drive motor and the other end screwed into the corresponding movable seat to form the power output end of the first drive assembly;

[0024] The second drive motor drives the rotating lead screw to rotate, so that the moving seat drives the moving roller to move on the rotating lead screw.

[0025] In some embodiments, two rotating lead screws are provided, and the two rotating lead screws are correspondingly connected to the two ends of the movable seat along the axial direction of the rotating roller; one of the rotating lead screws is connected to the power output shaft of the second drive motor to form an active lead screw; the other rotating lead screw is poweredly connected to the active lead screw through a transmission assembly.

[0026] In one possible implementation, the precision open mill further includes:

[0027] Two sets of displacement sensors are installed one-to-one on the two movable seats;

[0028] The controller is electrically connected to the two sets of the first drive components and the two sets of displacement sensors respectively. The controller is used to control the moving seat to drive the moving roller closer to or away from the fixed roller.

[0029] Compared with the prior art, the solution shown in this application uses two sets of first driving components to drive the corresponding moving seat to move the moving roller closer to or away from the fixed roller. The first driving components realize power drive, reducing the difficulty of manual rotation and pushing, reducing the intensity of adjustment operations, and improving work efficiency. After the moving roller moves into place, the position of the moving seat is fixed by two sets of positioning rods, which can enhance the stability of the moving roller, avoid the instability of the moving roller vibration, and ensure that the moving seat is always in contact with the material to be smelted, thereby ensuring the continuity of heat transfer and smelting process. In addition, the two sets of symmetrical structural designs in this application ensure the stability and uniformity of the open mill process. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 is a schematic diagram of the structure of the precision open mill provided in an embodiment of this utility model;

[0032] Figure 2 is a schematic diagram of the structure of the precision open mill provided in an embodiment of this utility model;

[0033] Figure 3 is a schematic diagram of a partial installation structure of the positioning rod provided in an embodiment of this utility model.

[0034] In the diagram: 1. Support base; 2. Moving roller; 3. Fixed roller; 4. Drive box; 41. Clearance hole; 42. Slide rail; 5. First drive assembly; 51. Second drive motor; 52. Rotating lead screw; 53. Transmission assembly; 6. Positioning rod; 61. Screw; 62. Knob; 63. Limit nut; 7. Moving base; 71. Moving plate; 72. Mounting base; 73. First variable frequency motor; 74. Auxiliary shaft; 8. First limit plate; 9. Displacement sensor; 10. Second variable frequency motor. Detailed Implementation

[0035] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in Figure 1 and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0038] Please refer to Figures 1 to 3 together. The precision open mill provided by this utility model will now be described. The precision open mill includes a support base 1, two sets of rotating rollers, and two sets of positioning rods 6. A drive box 4 is provided at each of the left and right ends of the top of the support base 1. The two sets of rotating rollers are arranged parallel to each other between the two drive boxes 4 with a gap between them. The two ends of one set of rotating rollers extend into the two drive boxes 4 and are connected to the movable seats 7 so that the rotating rollers form movable rollers 2. The other set of rotating rollers is defined as fixed rollers 3. There is a speed difference between the movable rollers 2 and the fixed rollers 3. Two sets of first drive components 5 are correspondingly arranged in the two drive boxes 4 and are correspondingly connected to the two movable seats 7. The first drive components 5 are used to drive the movable rollers 2 to move closer to or away from the fixed rollers 3 through the movable seats 7. The two sets of positioning rods 6 are correspondingly inserted into the two drive boxes 4 and are connected to the corresponding movable seats 7 after the movable rollers 2 move into place.

[0039] It should be noted that the two sets of rotating rollers used in this application each correspond to a set of drive mechanisms. The moving roller 2 is driven by a first variable frequency motor 73, and the fixed roller 3 is driven by a second variable frequency motor 10. The first variable frequency motor 73 and the second variable frequency motor 10 are respectively housed in two drive boxes 4 to ensure that the weight on the left and right sides of the device is equal, thus guaranteeing the stability of the device. There is a speed difference between the moving roller 2 and the fixed roller 3, so that a speed difference is formed on both sides of the material to be refined, thereby increasing the longitudinal shearing effect on the material to be refined and improving the tearing, shearing, and extrusion refining effect. Specifically, the rotational speed difference between the moving roller 2 and the fixed roller 3 is formed by adjusting the rotational speeds of the first variable frequency motor 73 and the second variable frequency motor 10 accordingly.

[0040] In addition, the second variable frequency motor 10 is fixed to the side wall of the drive box 4 by a mounting support plate and is located above the first drive assembly 5 to avoid relative interference with the first drive assembly 5.

[0041] Furthermore, each rotating roller is equipped with a heating device for melting the material to be smelted. The specific structure, heating working principle, and connection method of the heating device are all existing technologies and will not be described in detail here.

[0042] Optionally, the first drive assembly 5 is a telescopic drive component, and the power output end of the telescopic drive component is connected to the bottom of the movable seat 7; the telescopic drive component can be a telescopic cylinder, a telescopic hydraulic cylinder, or an electric push rod.

[0043] It should be noted that the two sets of positioning rods 6 are symmetrically distributed on the front and rear sides of the moving seat 7 in a direction perpendicular to the axis of the rotating roller. This can limit the position of the moving roller 2 in this direction, so that the front and rear sides of the material to be smelted are always in contact with the corresponding moving roller 2 and fixed roller 3, ensuring the effect of temperature transfer, and promoting the smelting effect with the squeezing and tearing action of the moving roller 2 and fixed roller 3.

[0044] Compared with the prior art, the precision open mill provided by this utility model uses two sets of first drive components 5 to drive the corresponding moving seat 7 to move the moving roller 2 closer to or away from the fixed roller 3. The first drive components 5 realize power drive, reduce the difficulty of manual rotation and pushing, reduce the intensity of adjustment operation, and improve work efficiency. After the moving roller 2 moves into place, the position of the moving seat 7 is fixed by two sets of positioning rods 6, which can enhance the stability of the moving roller 2, avoid the moving roller 2 from vibrating and becoming unstable, and make the moving seat 7 always in contact with the material to be refined, thereby ensuring the continuity of heat transfer and melting process. In addition, the two sets of symmetrical structural designs in this application ensure the stability and uniformity of the open mill process.

[0045] Please refer to Figure 3. In some possible embodiments, each set of positioning rods 6 includes two screws 61 and a limiting nut 63. The two screws 61 extend along the axis perpendicular to the rotating roller and are arranged opposite each other. One end of the screw 61 passes through the wall of the drive box 4 and is screwed onto the corresponding moving seat 7. The other end is provided with a knob 62. The limiting nut 63 is screwed onto the outside of the screw 61 extending out of the drive box 4, and one side of the limiting nut 63 abuts against the outer wall of the drive box 4.

[0046] Specifically, when the moving roller 2 is moved, the limiting nut 63 moves towards the knob 62, and the screw 61 rotates outward from the drive box 4 a suitable distance to make way for the moving seat 7. After the moving seat 7 is in place, the screw 61 is first tightened onto the corresponding moving seat 7, and then the limiting nut 63 is tightened so that one side of the limiting nut 63 abuts against the outer wall of the drive box 4, thereby positioning the moving seat 7 and preventing the moving seat 7 from shaking and becoming unstable. This ensures that the moving seat 7 is always in contact with the material to be smelted, thus guaranteeing the continuity of the smelting process.

[0047] The design of the positioning rod 6 facilitates the positioning of the movable seat 7. By screwing the screw 61 and the limiting nut 63 onto the movable seat 7, the movable seat 7 can be quickly and accurately fixed in the required position, improving the adjustment efficiency of the equipment.

[0048] It should be noted that only one screw 61 is shown in the vessel body 1 in this application. In actual operation, each drive box 4 corresponds to a set of positioning rods 6. Each set of positioning rods 6 includes two screws 61. Each screw 61 corresponds to a limit nut 63 and a knob 62. The screws 61 are connected to the moving plate 71 and the limit nut 63 by threads.

[0049] Referring to Figure 1, in some possible embodiments, the movable seat 7 includes a movable plate 71 and a mounting seat 72; the movable plate 71 is slidably disposed in the drive box 4 along an axis perpendicular to the rotating roller; the movable plate 71 is connected to the power output end of the first drive assembly 5; the mounting seat 72 is fixed to the top of the movable plate 71; the mounting seat 72 is correspondingly connected to the end of the movable roller 2.

[0050] By setting the movable plate 71, the mounting base 72 and the movable roller 2 can be moved by the movable plate 71, thereby changing the distance between the movable roller 2 and the fixed roller 3; furthermore, the connection between the movable plate 71 and the movable roller 2 is realized through the mounting base 72.

[0051] Specifically, the movable plate 71 can slide along the axis perpendicular to the rotating roller, which facilitates precise control of the position of the movable roller 2 through the first drive assembly 5. The mounting base 72 is used to fix the end of the movable roller 2, making the structure more reasonable and the division of labor clear.

[0052] Optionally, the mounting base 72 includes a bottom connecting plate and limiting plates located at both ends of the bottom connecting plate. An installation space is formed between the two limiting plates and the connecting plate for mounting the movable roller 2 and the drive device or connecting accessories. Specifically, the limiting plate near the movable roller 2 has mounting holes suitable for the output shaft of its drive device to pass through.

[0053] Please refer to Figures 1 and 2. As one embodiment of the connection between the movable roller 2 and the mounting base 72, one mounting base 72 is provided with a first variable frequency motor 73, and the other mounting base 72 is provided with an auxiliary shaft 74. One end of the movable roller 2 is fixedly connected to the power output shaft of the first variable frequency motor 73, and the other end is fixedly connected to the auxiliary shaft 74. Both ends of the movable roller 2 are connected to the corresponding mounting base 72 through the first variable frequency motor 73 and the auxiliary shaft 74.

[0054] By setting up the first variable frequency motor 73 and the auxiliary shaft 74, the two ends of the moving roller 2 are driven separately, which improves the stability and reliability of the drive and allows the speed of the moving roller 2 to be flexibly adjusted as needed.

[0055] It should be noted that the two ends of the auxiliary shaft 74 pass through the mounting holes on the limiting plate of the mounting base 72 to limit the auxiliary shaft 74. At the same time, it facilitates the formation of two action points at the mounting holes of the two limiting plates so as to drive the two ends of the auxiliary shaft 74 to move synchronously, thereby ensuring the smooth movement of the ends of the moving shaft.

[0056] Please refer to Figure 1. For example, the drive box 4 is provided with relief holes 41 extending along the sliding direction of the moving plate 71. The two ends of the moving roller 2 pass through the corresponding relief holes 41. The two ends of the moving roller 2 are respectively provided with first limiting plates 8. One side of the first limiting plate 8 is attached to the outer side wall of the drive box 4 and covers the relief holes 41.

[0057] The clearance hole 41 on the drive box 4 facilitates the passage of both ends of the moving roller 2 and avoids mutual interference; the first limiting plate 8 can prevent the moving roller 2 from coming off during movement, ensuring the safety and stability of the equipment.

[0058] Furthermore, the first limiting plate 8 covers the clearance hole 41, which can prevent splashed residue of the material to be refined from entering the drive box 4 through the clearance hole 41. It should be understood that if splashed residue enters when the movable seat 7 moves inside the drive box 4, it will increase the friction of the movable plate 71, and the accumulation of residue will cause the movable plate 71 to jam. Therefore, the first limiting plate 8 can intercept the splashed residue, ensuring the smooth and continuous movement of the movable seat 7.

[0059] Please refer to Figure 1. In some embodiments, one side of the mounting base 72 is in contact with the inner wall of the drive box 4, and the mounting base 72 and the first limiting plate 8 are limited to the inner and outer sides of the drive box 4.

[0060] Specifically, the limiting plate of the mounting base 72 is in contact with the inner wall of the drive box 4, and the limiting plate of the mounting base 72 and the first limiting plate 8 are limited on the inner and outer sides of the box wall, which further enhances the stability of the moving base 7 moving in the drive box 4, reduces the axial shaking and deviation of the moving roller 2 between the two drive boxes 4, and ensures the smoothness of the moving roller 2.

[0061] It should be understood that when the moving roller 2 and the fixed roller 3 are melting the material to be smelted, the moving roller 2 may also move axially between the drive boxes 4 on both sides, which reduces the stability of the moving roller 2 in the axial direction. In this application, the limiting plate of the mounting base 72 and the first limiting plate 8 are limited to the inner and outer sides of the box wall, which can realize the limiting of the two ends of the moving roller 2 in the axial direction, and is used to control its stability in this direction.

[0062] Please refer to Figure 1. For example, the bottom wall of the drive box 4 is provided with multiple slide rails 42, which are spaced apart along the axial direction of the rotating roller; the bottom of the moving plate 71 is provided with multiple slide grooves that correspond one-to-one with the multiple slide rails 42, and the slide grooves are slidably connected to the corresponding slide rails 42.

[0063] By engaging the slide rail 42 on the bottom wall of the drive box 4 with the slide groove on the bottom of the moving plate 71, precise guidance is provided for the sliding of the moving plate 71, improving the accuracy and smoothness of the movement of the moving roller 2.

[0064] Referring to Figure 1, in some possible embodiments, the first drive assembly 5 includes a second drive motor 51 and a rotating lead screw 52; the second drive motor 51 is located below the moving roller 2 in the vertical direction; one end of the rotating lead screw 52 is fixed on the power output shaft of the second drive motor 51, and the other end is screwed into the corresponding moving seat 7 to form the power output end of the first drive assembly 5; wherein, the second drive motor 51 drives the rotating lead screw 52 to rotate, so that the moving seat 7 drives the moving roller 2 to move on the rotating lead screw 52.

[0065] The second drive motor 51 drives the movable seat 7 to move by rotating the lead screw 52. It has a simple structure, high transmission efficiency, saves time and effort, and can also realize the rapid and accurate adjustment of the movable roller 2, making it easy to operate.

[0066] Please refer to Figure 1. In some embodiments, there are two rotating lead screws 52, which are connected to the two ends of the moving seat 7 along the axial direction of the rotating roller. One of the rotating lead screws 52 is connected to the power output shaft of the second drive motor 51 to form the active lead screw. The other rotating lead screw 52 is poweredly connected to the active lead screw through the transmission assembly 53.

[0067] The design of two rotating lead screws 52 increases the stability and balance of the drive. Specifically, the transmission component 53 can be one of a belt transmission component 53, a chain transmission component 53, or a gear transmission component 53.

[0068] Preferably, the two rotating lead screws 52 transmit power to each other via a belt drive assembly 53 or a chain drive assembly 53 to meet the distance requirements between the two rotating lead screws 52.

[0069] Preferably, the axial length of the first variable frequency motor 73, the axial length of the moving roller 2, and the axial length of the auxiliary shaft 74 are equal, so that the four sets of rotating lead screws 52 are evenly distributed in the axial direction of the moving roller 2, thereby improving the consistency of movement at both ends of the moving roller 2.

[0070] Specifically, the active lead screw and another rotating lead screw 52 connected through the transmission assembly 53 realize synchronous driving of the moving roller 2, ensuring the consistency of the movement of the moving roller 2 and improving the processing quality of the open mill.

[0071] It should be noted that the rotating screw 52 is provided with threads, and the rotating screw 52 is screwed to the moving plate 71. That is, the moving plate 71 is provided with threaded holes, and the rotating screw 52 is threadedly connected to the moving plate 71 through the threaded holes. When the rotating screw 52 rotates, the moving plate 71 can move along the axial direction of the rotating screw 52.

[0072] Please refer to Figure 1. In some possible embodiments, the precision open mill also includes two sets of displacement sensors 9 and a controller; the two sets of displacement sensors 9 are respectively disposed on two movable seats 7; the controller is electrically connected to the two sets of first drive components 5 and the two sets of displacement sensors 9 respectively, and the controller is used to control the movable seats 7 to drive the movable roller 2 to move closer to or away from the fixed roller 3.

[0073] The displacement sensor 9 can monitor the position of the moving seat 7 in real time. The controller can accurately control the first drive component 5 based on the feedback signal from the displacement sensor 9, realizing an automated adjustment process, improving production efficiency and processing accuracy, and reducing errors caused by manual operation.

[0074] Optionally, the displacement sensor 9 is fixed on the mounting base 72 or the movable plate 71. Additionally, the controller is electrically connected to the drive devices of the two sets of rotating rollers to control the rotation of the rotating rollers; that is, the controller controls the speed of the movable roller 2 and the rotating rollers by controlling the speed of the first variable frequency motor 73 and the second variable frequency motor 10 to create a speed difference.

[0075] Specifically, the controller is a structure that integrates multiple control elements through programming. The collection of signals from the displacement sensor 9, the control of the first drive component 5, and the control of the speeds of the first variable frequency motor 73 and the second variable frequency motor 10 can all be controlled by different control elements. The specific structure, connection relationship, and working principle of each control element are all existing technologies and will not be described in detail here.

[0076] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precision open mill, characterized in that, include: A support base (1) has a drive box (4) at each of its top left and right ends; two sets of rotating rollers are spaced apart and parallel between the two drive boxes (4); one set of rotating rollers has its two ends inserted into the two drive boxes (4) and connected to a movable seat (7) so that the rotating roller forms a movable roller (2); the other set of rotating rollers is defined as a fixed roller (3); and there is a speed difference between the movable roller (2) and the fixed roller (3); two sets of first drive components (5) are respectively disposed in the two drive boxes (4) and are respectively connected to the two movable seats (7); the first drive components (5) are used to drive the movable roller (2) to move closer to or away from the fixed roller (3) through the movable seat (7); and two sets of positioning rods (6) are respectively inserted into the two drive boxes (4) and connected to the corresponding movable seat (7) after the movable roller (2) moves into place.

2. The precision open mill as described in claim 1, characterized in that, Each set of positioning rods (6) includes: two screws (61) extending along the axis perpendicular to the rotating roller and arranged opposite to each other, one end of the screw (61) passing through the wall of the drive box (4) and screwed onto the corresponding moving seat (7), and the other end having a knob (62); a limiting nut (63) screwed onto the outside of the screw (61) extending from the drive box (4) and abutting against the outer wall of the drive box (4).

3. The precision open mill as described in claim 1, characterized in that, The movable seat (7) includes: a movable plate (71) which is slidably disposed in the drive box (4) along an axis perpendicular to the rotating roller; the movable plate (71) is connected to the power output end of the first drive assembly (5); and a mounting seat (72) which is fixed to the top of the movable plate (71); the mounting seat (72) is correspondingly connected to the end of the movable roller (2).

4. The precision open mill as described in claim 3, characterized in that, One of the mounting bases (72) is equipped with a first variable frequency motor (73), and the other mounting base (72) is equipped with an auxiliary shaft (74). One end of the moving roller (2) is fixedly connected to the power output shaft of the first variable frequency motor (73), and the other end is fixedly connected to the auxiliary shaft (74). The two ends of the moving roller (2) are connected to the corresponding mounting base (72) through the first variable frequency motor (73) and the auxiliary shaft (74).

5. The precision open mill as described in claim 3 or 4, characterized in that, The drive box (4) is provided with clearance holes (41) extending along the sliding direction of the moving plate (71), and the two ends of the moving roller (2) pass through the corresponding clearance holes (41); the two ends of the moving roller (2) are respectively provided with first limiting plates (8), one side of the first limiting plate (8) is attached to the outer side wall of the drive box (4) and covers the clearance holes (41).

6. The precision open mill as described in claim 5, characterized in that, One side of the mounting base (72) is in contact with the inner wall of the drive box (4), and the mounting base (72) and the first limiting plate (8) are limited to the inner and outer sides of the box wall of the drive box (4).

7. The precision open mill as described in claim 6, characterized in that, The bottom wall of the drive box (4) is provided with multiple slide rails (42), which are spaced apart along the axial direction of the rotating roller; the bottom of the moving plate (71) is provided with multiple sliding grooves that correspond one-to-one with the multiple slide rails (42), and the sliding grooves are slidably connected to the corresponding slide rails (42).

8. The precision open mill as described in claim 1, characterized in that, The first drive assembly (5) includes: a second drive motor (51) located vertically below the moving roller (2); a rotating screw (52) with one end fixed to the power output shaft of the second drive motor (51) and the other end screwed into the corresponding moving seat (7) to form the power output end of the first drive assembly (5); wherein the second drive motor (51) drives the rotating screw (52) to rotate, so that the moving seat (7) drives the moving roller (2) to move on the rotating screw (52).

9. The precision open mill as described in claim 8, characterized in that, Two rotating lead screws (52) are provided, and the two rotating lead screws (52) are connected to the two ends of the moving seat (7) along the axis of the rotating roller. One of the rotating lead screws (52) is connected to the power output shaft of the second drive motor (51) to form an active lead screw. The other rotating lead screw (52) is poweredly connected to the active lead screw through a transmission assembly (53).

10. The precision open mill as described in claim 1, characterized in that, The precision open mill also includes: two sets of displacement sensors (9), which are respectively installed on the two moving seats (7); a controller, which is electrically connected to the two sets of the first drive components (5) and the two sets of displacement sensors (9), and the controller is used to control the moving seats (7) to drive the moving roller (2) to move closer to or away from the fixed roller (3).

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