Polishing machine

Abstract

The utility model relates to the technical field of die machining, in particular to a polishing machine which is used for polishing a die, the die comprises a die cavity arranged in the first direction, and the polishing machine comprises a machine frame, a moving part and a polishing head. The rack is provided with a connecting part used for being connected with the mold. The moving part is movably connected with the rack, and the moving part is assembled in the mode that when the connecting part is connected to the mold, the moving direction of the moving part is parallel to the first direction; the polishing head is mounted on the moving part; the polishing machine provided by the utility model can further improve the polishing efficiency and the polishing quality of the die cavity of the die.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to a polishing machine. Background Art

[0002] A polishing machine is an electric tool used for mechanical grinding, polishing and waxing, aiming to improve the surface quality of a workpiece and make it smoother and brighter. Conventional manual polishing machines mainly use a motor to drive the polishing disc to rotate at high speed, and use polishing agents to rub against the surface to be treated, thereby achieving the purpose of removing pollutants, oxide layers or shallow marks.

[0003] However, when semi-automatic polishing is performed by a manual hand-held polishing machine, especially when polishing the mold cavity, the polishing angle and durability cannot be guaranteed when polishing the mold cavity. As a result, the polishing efficiency of the mold cavity is still low, and the polishing quality is still difficult to meet higher requirements. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a polishing machine that can further improve the polishing efficiency and polishing quality of the mold cavity.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a polishing machine for polishing a mold, wherein the mold includes a mold cavity arranged along a first direction, including:

[0006] A frame, wherein the frame is provided with a connecting portion for connecting the mold;

[0007] a moving part, movably connected to the frame, and the moving part is assembled so that when the connecting part is connected to the mold, the moving direction of the moving part is parallel to the first direction;

[0008] The polishing head is installed on the moving part.

[0009] In an optional embodiment of the utility model, the polishing machine further comprises a first locking portion and a guide portion arranged on the frame along a first direction; the moving portion is mounted on the frame through the guide portion, the moving portion is rotatably arranged relative to the frame, and the rotation axis is parallel to the first direction;

[0010] The first locking portion is configured to be switchable between a first locking state and a first unlocking state. When the first locking portion is in the first locking state, the moving portion can be fixed to prevent the moving portion from rotating around a rotation axis parallel to the first direction.

[0011] In an optional embodiment of the utility model, the guide portion includes:

[0012] A driving screw passes through the moving part along a first direction and is drivingly connected to the moving part;

[0013] A guide rod passes through the moving part and is arranged parallel to the driving screw.

[0014] In an optional embodiment of the utility model, the polishing machine further comprises a mounting frame for mounting the driving screw and the guide rod;

[0015] The mounting frame is provided with an arc limiting structure for limiting the movement tracks of the two ends of the guide rod, so that the guide rod can rotate around an axis parallel to the first direction.

[0016] In an optional embodiment of the utility model, the polishing machine further comprises:

[0017] A first guide rail, through which the guide portion is mounted on the frame, and the first guide rail is vertically slidably connected to the guide portion;

[0018] The second locking portion is configured to be switchable between a second locking state and a second unlocking state, and when the second locking portion is in the second locking state, it can prevent the first guide rail and the guide portion from sliding relative to each other.

[0019] In an optional embodiment of the present invention, two polishing heads are provided, and the two polishing heads are located on the same straight line and arranged in opposite directions.

[0020] In an optional embodiment of the present invention, a handle is provided on the frame.

[0021] In an optional embodiment of the present invention, the polishing machine further comprises an electrically connected driving member and a controller, and the driving member is drivingly connected to the driving screw.

[0022] In an optional embodiment of the present invention, the polishing head is a rotating polishing head or a fixed polishing head.

[0023] In an optional embodiment of the present invention, the polishing machine further includes a timer, and the timer is electrically connected to the controller.

[0024] To sum up, the polishing head of the polishing machine of the utility model is installed on the frame through the moving part. When the frame is installed on the mold through the connecting part, the moving part can drive the polishing head to polish the mold cavity of the mold along the first direction, thereby eliminating the trouble of manually polishing the mold cavity, reducing manual labor, and improving polishing efficiency and polishing quality; polishing the mold cavity of the mold by the polishing machine can further increase the mold cavity smoothness, improve the quality of the mold, and make the product easier to demold from the mold cavity, so that the product will not adhere to the mold; at the same time, polishing can effectively reduce the roughness of the cavity surface and improve the precision and appearance quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a polishing machine in one embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the mold structure described in one embodiment of the utility model;

[0028] Figure 3 A top view of a polishing machine in one embodiment of the utility model;

[0029] Figure 4 It is a side view of a polishing machine in one embodiment of the utility model;

[0030] Figure 5 for Figure 1 A magnified view of the structure at A;

[0031] Figure 6 for Figure 1 A magnified view of the structure at B in FIG.

[0032] Figure 7 This is a schematic diagram of the structure of a mounting frame in another embodiment of the utility model;

[0033] Explanation of component numbers: mold 100, mold cavity 101, frame 1, connecting part 11, side plate 12, connecting plate 13, handle 14, moving part 2, polishing head 3, connecting piece 31, guide part 4, first locking part 41, driving screw 42, guide rod 43, mounting frame 44, arc limiting structure 441, first guide rail 5, second locking part 51. DETAILED DESCRIPTION

[0034] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0035] See also Figures 1 to 7 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0036] Unless otherwise defined, all technical and scientific terms used in the present invention are consistent with the prior art knowledge of those skilled in the art and the records of the present invention. The present invention may also be implemented using any methods, devices and materials of the prior art that are similar or equivalent to the methods, devices and materials described in the embodiments of the present invention.

[0037] like Figure 1-4 As shown, the utility model provides a polishing machine for polishing a mold 100, wherein the mold 100 includes a mold cavity 101 arranged along a first direction, and includes a frame 1, a moving part 2 and a polishing head 3;

[0038] The frame 1 is provided with a connecting portion 11 for connecting to the mold 100; the moving portion 2 is movably connected to the frame 1, and the moving portion 2 is assembled so that when the connecting portion 11 is connected to the mold 100, the moving direction of the moving portion 2 is parallel to the first direction; the polishing head 3 is installed on the moving portion 2.

[0039] It should be noted that after the frame 1 is installed on the mold 100, the frame 1 is arranged along the first direction; the length of the frame 1 in this case is adapted to the length of the mold 100 so that the stroke of the moving part 2 can meet the demand for continuous back and forth polishing of the mold cavity 101 of the mold 100, and the moving part 2 can be, for example, a mounting seat for mounting the polishing head 3; the shape of the polishing head 3 in this case can be consistent with the shape of the mold cavity 101 or other shapes that can meet the requirements of polishing the inner wall of the mold cavity 101; the polishing head 3 is generally detachably connected to the moving part 2, so that the polishing head 3 can be easily replaced after being worn after a period of polishing. Among them, the moving part 2 is movably connected to the frame 1, for example, the moving part 2 can perform linear motion along the track on the frame 1 along the X-axis and / or the Y-axis and / or the Z-axis.

[0040] The polishing machine of this case is used to polish the mold cavity 101 of the mold 100 to increase the smoothness of the mold cavity 101 of the mold 100 and improve the quality of the mold 100, so that the product can be demolded from the mold cavity 101 more easily and the product will not adhere to the mold 100; at the same time, polishing can effectively reduce the roughness of the cavity surface and improve the precision and appearance quality of the product. The polishing head 3 is installed on the frame 1 through the moving part 2. When the frame 1 is installed on the mold 100 through the connecting part 11, the moving part 2 can drive the polishing head 3 to polish the mold cavity 101 of the mold 100 along the first direction, thereby eliminating the trouble of manually polishing the mold cavity 101, reducing manual labor, and improving polishing efficiency and polishing quality.

[0041] The shape of the polishing head 3 in this case can be selected according to actual needs. For example, one end of the polishing head 3 used for polishing is round, square, triangular, cylindrical, spherical or other shapes that meet the use requirements, so as to facilitate polishing the side and bottom of the mold cavity 101.

[0042] like Figure 1 , 2 , 5-6, as an optional embodiment of the present case, the polishing machine further includes a first locking portion 41 and a guide portion 4 arranged on the frame 1 along a first direction; the moving portion 2 is mounted on the frame 1 through the guide portion 4, and the moving portion 2 is rotatably arranged relative to the frame 1, and the rotation axis is parallel to the first direction;

[0043] The first locking portion 41 is configured to be switchable between a first locking state and a first unlocking state. When the first locking portion 41 is in the first locking state, it can fix the moving portion 2 to prevent the moving portion 2 from rotating around the axis parallel to the first direction.

[0044] It should be noted that the guide part 4 is generally a slide rail, which can be fixedly connected to the frame 1 or movably connected to the frame 1, or the slide rail can be slidably connected to the frame 1 along a direction perpendicular to the first direction; the moving part 2 is rotatably arranged relative to the frame 1, and the rotation axis is parallel to the first direction, and the moving part 2 can be rotated around the guide part 4 by rotating the moving part 2. For example, the moving part 2 includes an inner ring and an outer ring, and the outer ring is rotatably arranged on the inner ring along an axis parallel to the first direction, and the polishing head 3 is detachably fixed to the outer ring; the inner ring is slidably mounted on the guide part 4 and can slide along the first direction, and the first locking part 41 is arranged between the inner ring and the outer ring. When the first locking part 41 is in the first locking state, the first locking part 41 fixes the inner ring and the outer ring such as a screw to prevent the inner ring and the outer ring from rotating relative to each other. The moving part 2 is rotatably arranged relative to the frame 1, and the guide part 4 can be rotated so that the moving part 2 follows the rotation, so as to achieve the requirement of adjusting the angle of the polishing head 3 relative to the mold cavity 101; by adjusting the angle of the polishing head 3, the position of the mold cavity 101 that needs to be polished can be polished to meet the actual needs; and the first locking part 41 can be a fastener or a fixing frame. For example, when the fastener such as a screw is loosened, the first locking part 41 is in a first unlocking state. For example, when the fastener such as a screw is tightened, the first locking part 41 is in a first locking state; the first locking part 41 can connect the moving part 2 and the guide part 4 to realize its first locking state. In the stopped state, the first locking portion 41 can also be used to connect the moving part 2 and the frame 1 to achieve its first locking state. When the first locking portion 41 is in the first locking state, it is sufficient to ensure that the polishing head 3 can move linearly along the first direction and prevent the polishing head 3 from rotating around a rotation axis parallel to the first direction; when the first locking portion 41 is in the first unlocked state, the limit on the moving part 2 can be released, so that the moving part 2 can be driven manually or automatically to rotate around an axis parallel to the first direction, thereby achieving angle adjustment of the polishing head 3, and then achieving fixed-point cleaning and polishing of various positions of the mold cavity 101.

[0045] like Figure 1 , 2 5-6, as an optional embodiment of the present invention, the guide portion 4 includes a driving screw 42 and a guide rod 43;

[0046] The driving screw 42 passes through the moving part 2 along a first direction and is drivingly connected to the moving part 2;

[0047] The guide rod 43 passes through the moving part 2 and is arranged parallel to the driving screw 42 .

[0048] It should be noted that the driving screw 42 is directly or indirectly connected to the frame 1 along the direction of the rotation axis parallel to the first direction. When the driving screw 42 is indirectly connected to the frame 1, the guide rod 43 is also indirectly connected to the frame 1. The moving part 2 is generally a slider, and the driving screw 42 is adapted to be connected to the slider. The driving screw 42 is driven by a motor to rotate, thereby driving the moving part 2 to move linearly along the first direction, so that the polishing head 3 can stably polish the mold cavity 101. The driving stability of the driving screw 42 is high, which can avoid or reduce large-scale vibrations during the movement of the polishing head 3, thereby avoiding polishing defects and improving the polishing quality.

[0049] like Figure 6 As shown, as an optional embodiment of the present case, the polishing machine further includes a mounting frame 44 for mounting the driving screw 42 and the guide rod 43;

[0050] The mounting frame 44 is provided with an arc limiting structure 441 for limiting the movement tracks of the two ends of the guide rod 43 , so that the guide rod 43 can rotate around an axis parallel to the first direction.

[0051] It should be noted that the mounting frame 44 is directly or indirectly mounted on the frame 1, both ends of the driving screw 42 are rotatably connected to the mounting frame 44, and both ends of the guide rod 43 are also mounted on the mounting frame 44. The mounting frame 44 is provided with an arc limiting structure 441, and the arc limiting structure 441 can be an arc-shaped protrusion or groove; and the end of the guide rod 43 is a structure adapted to the arc limiting structure 441. For example, the arc limiting structure 441 is a convex portion, and the end of the guide rod 43 is a concave portion adapted to the convex portion, so that the guide rod 43 can rotate around a rotation axis parallel to the first direction, thereby enabling the guide rod 43 and The angle of the moving part 2 connected to the driving screw 42 on the frame 1 can be adjusted; it should be understood that when the curvature of the arc limiting structure 441 is large enough, it can satisfy the rotation of the polishing head 3 around the rotation axis parallel to the first direction and turn the direction of the polishing head 3, so that the polishing head 3 polishes one side of the mold cavity 101 and then turns to polish the other side of the mold cavity 101; it should be understood that the driving screw 42 and the motor drive connection can be a fixed connection or a detachable connection. In order to facilitate the angle adjustment of the polishing head 3, the motor can be set to be able to follow the guide rod 43 for angle adjustment, and after the angle adjustment, it is locked and fixed with the first locking part 41.

[0052] like Figure 7 As shown, as an optional embodiment of the present case, it is a schematic diagram of the connection between the driving screw 42, the guide rod 43 and the mounting bracket 44. The first locking portion 41 in the figure is a fastening nut, and the guide rod 43 can be slidably adjusted on the arc limiting structure 441. The guide rod 43 and the mounting bracket 44 can also be fixed by tightening the fastening nut.

[0053] like Figure 1 , 3 -6, as an optional embodiment of the present case, the polishing machine also includes:

[0054] A first guide rail 5, the guide portion 4 is mounted on the frame 1 through the first guide rail 5, and the first guide rail 5 is vertically slidably connected to the guide portion 4;

[0055] The second locking portion 51 is configured to be switchable between a second locking state and a second unlocking state. When the second locking portion 51 is in the second locking state, it can prevent the first guide rail 5 and the guide portion 4 from sliding relative to each other.

[0056] It should be noted that the first guide rail 5 is arranged along a second direction perpendicular to the first direction, that is, the second direction is perpendicular to the length direction of the mold cavity 101, so that the guide part 4 can be adjusted along the second direction perpendicular to the first direction, thereby realizing the adjustment of the polishing head 3; the second locking part 51 can be a structure with the same structure as the first locking part 41, such as a fastener or a connecting frame; when the second locking part 51 is in the second unlocking state, the sliding of the guide part 4 on the first guide rail 5 can be unlocked, so that the guide part 4 can slide on the first guide rail 5 actively or passively; when the fastener such as a screw is loosened, the second locking part 51 is in the second unlocking state, and when the fastener such as a screw is tightened, the second locking part 51 is in the second locking state; the second locking part 51 can connect the second guide rail and the guide part 4 to make it in the second locking state, and the second locking part 51 can also connect the guide part 4 and the frame 1 to make it in the second locking state. Through the coordinated use of the first guide rail 5 and the second locking part 51, the polishing head 3 can be adjusted along the second direction.

[0057] like Figure 5 As shown, as an optional embodiment of the present case, two polishing heads 3 are provided, and the two polishing heads 3 are located on the same straight line and arranged in opposite directions.

[0058] It should be noted that, by setting two polishing heads 3 with different directions, one polishing head 3 is mainly used to polish the cavity 101 of the upper mold of the mold 100, and the other polishing head 3 is used to polish the cavity 101 of the lower mold of the mold 100. Generally, the upper mold and the lower mold are not polished at the same time. The reason for setting two polishing heads 3 is that it can avoid or reduce the need for more cumbersome adjustment of the position of the polishing head 3 when using one polishing head 3.

[0059] like Figure 4 As shown, as an optional embodiment of the present case, a handle 14 is provided on the frame 1.

[0060] It should be noted that, by providing the handle 14 , it is convenient to manually lift the polishing machine to the mold 100 , and then to install it with the mold 100 , thereby improving the convenience of use.

[0061] As an optional embodiment of the present case, the polishing machine further includes an electrically connected driving member and a controller, and the driving member is transmission-connected to the driving screw 42 .

[0062] It should be noted that the driving member is electrically connected to the controller. The driving member is generally a motor, but it can also be other driving members that meet the usage requirements. The controller controls the driving member to drive the driving screw 42 to rotate back and forth in a cycle, so that the polishing head 3 can continuously polish the mold cavity 101 of the mold 100 to be polished. Compared with manual polishing that cannot be continuous, the polishing machine in this case can improve the polishing efficiency.

[0063] The controller can be a fully isolated DC motor forward and reverse control module, which is suitable for frequent forward and reverse starting and operation of DC motors, or frequent switching of the positive and negative polarity of DC inductors. The controller can be a solid-state relay (SSR), which is an electronic switch that can be used to control the forward and reverse rotation of the motor. The controller can be a PLC control system. A programmable logic controller (PLC) is a controller widely used in the field of industrial automation. By writing corresponding control programs, the PLC can realize the forward and reverse control of the motor, and can integrate more control logic and protection functions. The controller can be a frequency converter, which can not only control the speed of the motor, but also realize the forward and reverse control of the motor. By changing the frequency and phase of the motor power supply, the frequency converter can accurately control the operating state of the motor. The specific controller can be selected according to actual needs.

[0064] As an optional embodiment of the present case, the polishing head 3 is a rotating polishing head or a fixed polishing head.

[0065] It should be noted that the rotating polishing head is rotatably mounted on the moving part 2; the fixed polishing head is generally detachably fixed on the moving part 2; the rotation of the rotating polishing head 3 can be driven by another motor. In certain demanding situations, the bottom of the mold cavity 101 can be polished by the rotating polishing head 3.

[0066] As an optional embodiment of the present case, the polishing machine also includes a timer, and the timer is electrically connected to the controller.

[0067] It should be noted that timers that can be connected to controllers usually have communication interfaces and corresponding communication protocols. For example, network timers, which have RS485 communication interfaces and support standard Modbus RTU protocols, can realize remote collection of timing time, parameter settings and timing control. For example, timer modules for PLC (Programmable Logic Controller), which are designed to be used with PLC systems, are usually connected through the I / O interface of the PLC, and can realize specific timing functions through programming. For example, timer cards in industrial control systems, in industrial control systems, timer cards can be inserted into control cabinets or workstations, and communicate with other controllers and modules through the system bus.

[0068] As an optional embodiment of the present case, the controller is also provided with an emergency stop switch, so as to stop the polishing machine urgently through the emergency stop switch.

[0069] As an optional embodiment of the present case, the driving component is a servo motor. The driving screw 42 is combined with the servo motor to convert the rotational motion of the servo motor into linear motion. The servo motor provides a variety of control methods, including torque control, speed control, position control, and forward and reverse rotation control, so that the polishing head 3 can polish the cavity 101 of the mold 100 back and forth.

[0070] As an optional embodiment of the present case, the polishing machine also includes a second guide rail and a third locking portion; the first guide rail 5 is arranged on the frame 1 through the second guide rail, and the second guide rail is vertically slidably connected to the first guide rail 5, and the second guide rail is also vertically arranged with the guide portion 4, that is, the second guide rail is arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction; the third locking portion is configured to be able to switch between a third locking state and a third unlocking state, and when the third locking portion is in the third locking state, the sliding of the first guide rail 5 on the second guide rail can be completely fixed; when the third locking portion is in the third unlocking state, the sliding fixation of the first guide rail 5 on the second guide rail can be released, so that the first guide rail 5 can slide and adjust its position on the second guide rail in a passive or active state, thereby realizing the adjustment of the position of the polishing head 3.

[0071] like Figure 1 As shown, as an optional embodiment of the present case, the frame 1 includes two side panels 12 and a connecting plate 13 , and the two side panels 12 are connected by the connecting plate 13 ; the slide rail is arranged between the two side panels 12 .

[0072] As an optional embodiment of the present case, the polishing head 3 is connected to the moving part 2 via a connecting piece 31. When there are two polishing heads 3, the two polishing heads 3 are detachably mounted on the moving part 2 via the connecting piece 31; wherein the polishing head 3 and the connecting piece 31 are connected via a fastener such as a bolt, and the connecting piece 31 and the moving part 2 are connected via another fastener such as a bolt or a screw.

[0073] Here’s how to use it:

[0074] Lift the polishing machine onto the mold 100 through the handle 14, and connect the connecting part 11 of the polishing machine to the lower mold or upper mold of the mold 100, which can be connected by fasteners; select a suitable polishing head 3 and a suitable polishing paste, clamp them on the polishing part, and adjust the angle of the polishing head 3; turn on the power, and control the controller to move the moving part on the guide part 4, and slowly increase the speed to wipe the mold cavity 101. After the speed of the polishing head 3 moving along the guide part 4 is adjusted, set the countdown through the controller or timer; polish after the countdown time is set, and after the predetermined polishing time is over, detect the surface of the mold cavity 101 to confirm whether to continue polishing. If polishing is not completed, selectively perform some of the above steps; after polishing is completed, remove the fasteners connecting the mold 100 and the polishing machine, remove the polishing head 3 of the polishing machine, because the polishing head 3 is generally a consumable, it does not need to be cleaned and stored, clean the entire polishing machine, and store the entire polishing machine in a dust-free box; it should be understood that part of the polishing head 3 can also be used continuously.

[0075] The polishing machine of the present invention can effectively clean the upper and lower mold cavities 101 of the linear mold 100, improve the cleaning and polishing efficiency, and no longer need separate manual operation; because the polishing head 3 of the present invention can set the cleaning angle, the mold cavity 101 can be polished more thoroughly.

[0076] In summary, the utility model effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0077] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A polishing machine for polishing a mold, wherein the mold comprises a mold cavity arranged along a first direction, characterized in that: include: A frame, wherein the frame is provided with a connecting portion for connecting the mold; a moving part, movably connected to the frame, and the moving part is assembled so that when the connecting part is connected to the mold, the moving direction of the moving part is parallel to the first direction; The polishing head is installed on the moving part.

2. The polishing machine according to claim 1, characterized in that: It also includes a first locking portion and a guide portion arranged on the frame along a first direction; the moving portion is installed on the frame through the guide portion, the moving portion is rotatably arranged relative to the frame, and the rotation axis is parallel to the first direction; The first locking portion is configured to be switchable between a first locking state and a first unlocking state. When the first locking portion is in the first locking state, the moving portion can be fixed to prevent the moving portion from rotating around a rotation axis parallel to the first direction.

3. The polishing machine according to claim 2, characterized in that: The guide portion comprises: A driving screw passes through the moving part along a first direction and is drivingly connected to the moving part; A guide rod passes through the moving part and is arranged parallel to the driving lead screw.

4. The polishing machine according to claim 3, characterized in that: Also included is a mounting frame for mounting the driving screw and the guide rod; The mounting frame is provided with an arc limiting structure for limiting the movement tracks of the two ends of the guide rod, so that the guide rod can rotate around an axis parallel to the first direction.

5. The polishing machine according to claim 2, characterized in that: Also includes: A first guide rail, through which the guide portion is mounted on the frame, and the first guide rail is vertically slidably connected to the guide portion; The second locking portion is configured to be switchable between a second locking state and a second unlocking state, and when the second locking portion is in the second locking state, it can prevent the first guide rail and the guide portion from sliding relative to each other.

6. The polishing machine according to claim 1, characterized in that: Two polishing heads are provided, and the two polishing heads are located on the same straight line and arranged in opposite directions.

7. The polishing machine according to claim 1, characterized in that: The frame is provided with a handle.

8. The polishing machine according to claim 3, characterized in that: It also includes an electrically connected driving member and a controller, and the driving member is drivingly connected to the driving screw.

9. The polishing machine according to claim 1, characterized in that: The polishing head is a rotating polishing head or a fixed polishing head.

10. The polishing machine according to claim 8, characterized in that: A timer is also included, and the timer is electrically connected to the controller.

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