阅读说明：本技术 可调式陶瓷抛光研磨机及方法 (Adjustable ceramic polishing grinder and method ) 是由 骆阳旭 吴朝晖 于 2019-09-17 设计创作，主要内容包括：本发明公开一种可调式陶瓷抛光研磨机及方法,包括机台及设置于机台上的输送装置、抛光研磨装置；该输送装置包括输送带及第一驱动单元；该抛光研磨装置包括主动轮、从动轮、砂带,该砂带绕于主动轮、从动轮上；该主动轮的一侧设有可调式压紧机构,该压紧机构包括压紧单元及第二驱动单元；该第二驱动单元驱动压紧单元可选择性地朝向砂带的底面的内侧位移或背离砂带的底面的内侧位移,以压紧砂带或释放砂带,以使砂带朝向抛光研磨区域位移或背离抛光研磨区域位移；借此,其能更好地对工件的表面进行磨平,实现了砂带对工件的不同的研磨程度,达到工件研磨程度可控的目的,从而使得工件的厚度可控,且能提升工件表面的粗糙度,提高工件的制作精度。(The invention discloses an adjustable ceramic polishing grinding machine and a method, comprising a machine table, a conveying device and a polishing grinding device, wherein the conveying device and the polishing grinding device are arranged on the machine table; the conveying device comprises a conveying belt and a first driving unit; the polishing and grinding device comprises a driving wheel, a driven wheel and an abrasive belt, wherein the abrasive belt is wound on the driving wheel and the driven wheel; one side of the driving wheel is provided with an adjustable pressing mechanism, and the pressing mechanism comprises a pressing unit and a second driving unit; the second drive unit drives the pressing unit to selectively displace towards the inner side of the bottom surface of the sanding belt or away from the inner side of the bottom surface of the sanding belt to press the sanding belt or release the sanding belt to displace the sanding belt towards or away from the polishing and grinding area; borrow this, it can grind the surface of work piece better and go on grinding the paper-back, has realized the abrasive band to the different grinding degree of work piece, reaches the controllable purpose of work piece grinding degree to make the thickness of work piece controllable, and can promote the roughness on work piece surface, improve the preparation precision of work piece.)

1. The utility model provides a pottery polishing grinding machine with adjustable which characterized in that: comprises a machine table, a conveying device and a polishing and grinding device, wherein the conveying device and the polishing and grinding device are arranged on the machine table;

the conveying device comprises a conveying belt and a first driving unit for driving the conveying belt to horizontally move;

the polishing and grinding device comprises a driving wheel, a driven wheel and an abrasive belt, wherein the driving wheel and the driven wheel extend along the conveying direction vertical to the conveying belt, the driving wheel is positioned below the driven wheel, the abrasive belt winds around the driving wheel and the driven wheel, and a polishing and grinding area for a workpiece to pass through is formed between the outer side of the bottom surface of the abrasive belt and the upper surface of the conveying belt;

one side of the driving wheel is provided with an adjustable pressing mechanism for pressing the abrasive belt, and the pressing mechanism comprises a pressing unit and a second driving unit; the second drive unit drives the pressing unit to be selectively displaceable towards the inside of the bottom surface of the sanding belt or away from the inside of the bottom surface of the sanding belt for pressing the sanding belt or releasing the sanding belt for displacing the sanding belt towards or away from the polishing and grinding area.

2. The adjustable ceramic polishing grinder of claim 1, wherein: the pressing mechanism also comprises an up-down lifting unit, and two ends of the up-down lifting unit are respectively connected with the second driving unit and the pressing unit; the second driving unit drives the up-down lifting unit to move up and down, and the up-down lifting unit is linked with the pressing unit to move upwards to depart from the inner side of the bottom surface of the abrasive belt so as to release the abrasive belt, so that the abrasive belt deviates from the polishing and grinding area to displace, or move downwards to the inner side of the bottom surface of the abrasive belt so as to press the abrasive belt, so that the abrasive belt displaces towards the polishing and grinding area.

3. The adjustable ceramic polishing grinder of claim 2, wherein: the up-down lifting unit comprises a linkage rod, a lifting seat connected to the linkage rod and a transverse positioning block connected to the lifting seat, the linkage rod is connected to the second driving unit, and the pressing unit is connected to the lower portion of the transverse positioning block.

4. The adjustable ceramic polishing grinder of claim 3, wherein: the action wheel is provided with two, and two action wheels set up along the direction of delivery interval that is on a parallel with the conveyer belt to form and supply to compress tightly the spacing of stepping down that the unit passed, compress tightly the unit and can move about and be located the spacing of stepping down.

5. The adjustable ceramic polishing grinder of claim 4, wherein: the lifting seats are arranged on two sides of the conveying belt in a symmetrical mode, one lifting seat is connected to the linkage rod, two ends of the transverse positioning block are connected to the corresponding lifting seat respectively, and two ends of each driving wheel are connected to the corresponding lifting seats.

6. The adjustable ceramic polishing grinder of claim 1, wherein: the driven wheel is connected with a pre-tightening mechanism used for tightening the abrasive belt, the pre-tightening mechanism comprises a pre-tightening frame, a bearing plate and a third driving unit, the bearing plate and the third driving unit are mounted on the pre-tightening frame, the third driving unit drives the bearing plate to move up and down, and the driven wheel is connected with the bearing plate.

7. The adjustable ceramic polishing grinder of claim 1, wherein: the abrasive belt conveying device is characterized in that a plurality of positioning roll shafts are arranged above the conveying belt and comprise a left positioning roll shaft and a right positioning roll shaft, the left positioning roll shaft and the right positioning roll shaft are respectively arranged on the left side and the right side of the driving wheel, and a positioning groove for an abrasive belt to pass through is formed between the driving wheel and the adjacent positioning roll shafts.

8. The adjustable ceramic polishing grinder of claim 1, wherein: still be provided with unloader, unloader includes the unloading area and moves the material mechanism, it includes material unit and fourth drive unit to move the material mechanism, fourth drive unit drive moves material unit reciprocating motion between conveyer belt, unloading area.

9. A ceramic polishing and grinding method is characterized in that: the device is provided with a conveying belt, a polishing and grinding device, a polishing and grinding area, a pressing mechanism and a control device; the method comprises the following steps:

step one, conveying a workpiece: the control device controls the conveying belt to convey the workpiece to the polishing and grinding area;

step two, grinding: the control device controls the outer side surface of an abrasive belt of the polishing and grinding device to grind a workpiece, and simultaneously the control device controls the pressing mechanism to press the abrasive belt on the inner side of the bottom surface of the abrasive belt so as to enable the abrasive belt to move towards a polishing and grinding area.

10. The ceramic polishing and grinding method according to claim 9, characterized in that: and in the second step, before grinding, the control device controls the pre-tightening mechanism to pre-tighten the abrasive belt, then the control device controls the pressing mechanism to press the inner side of the bottom surface of the abrasive belt, and the control device controls the outer side surface of the abrasive belt of the polishing and grinding device to grind.

Technical Field

The invention relates to the technical field of polishing grinders, in particular to an adjustable ceramic polishing grinder and a method.

Background

LED ceramic support is the work piece of platelike formula, it is after the machine-shaping, the surface generally needs the burnishing machine to polish and handles, traditional handicraft is that the polishing of taking is carried out to the manual mode usually, such mode work efficiency is extremely low, and the processing uniformity is difficult to guarantee, for this, automatic polishing grinding machine produces in succession, it is low that it has solved artifical work efficiency well, the processing uniformity is difficult to guarantee the scheduling problem, but the automatic polishing grinding machine who is used for ceramic plate polishing grinding among the prior art has ceramic plate surface to grind the degree not good enough, make the ceramic plate surface exist the polishing grinding degree easily and differ and the phenomenon of unevenness appears, lead to the quality of product not good enough, and can't adjust and process according to the required thickness of actual ceramic plate, make the unable regulation and control or the difficulty of thickness after the polishing grinding of ceramic plate.

Therefore, a new technology needs to be developed to solve the above problems.

Disclosure of Invention

In view of the above, the present invention provides an adjustable ceramic polishing grinder and method thereof, which can better grind the surface of a workpiece, achieve different degrees of grinding of the workpiece by an abrasive belt, and achieve the purpose of controlling the degree of grinding of the workpiece, so as to control the thickness of the workpiece, improve the roughness of the surface of the workpiece, and improve the manufacturing accuracy of the workpiece.

In order to achieve the purpose, the invention adopts the following technical scheme:

an adjustable ceramic polishing grinder comprises a machine table, a conveying device and a polishing and grinding device, wherein the conveying device and the polishing and grinding device are arranged on the machine table;

the conveying device comprises a conveying belt and a first driving unit for driving the conveying belt to horizontally move;

the polishing and grinding device comprises a driving wheel, a driven wheel and an abrasive belt, wherein the driving wheel and the driven wheel extend along the conveying direction vertical to the conveying belt, the driving wheel is positioned below the driven wheel, the abrasive belt winds around the driving wheel and the driven wheel, and a polishing and grinding area for a workpiece to pass through is formed between the outer side of the bottom surface of the abrasive belt and the upper surface of the conveying belt;

one side of the driving wheel is provided with an adjustable pressing mechanism for pressing the abrasive belt, and the pressing mechanism comprises a pressing unit and a second driving unit; the second drive unit drives the pressing unit to be selectively displaceable towards the inside of the bottom surface of the sanding belt or away from the inside of the bottom surface of the sanding belt for pressing the sanding belt or releasing the sanding belt for displacing the sanding belt towards or away from the polishing and grinding area.

As a preferred scheme, the pressing mechanism further comprises an up-down lifting unit, and two ends of the up-down lifting unit are respectively connected to the second driving unit and the pressing unit; the second driving unit drives the up-down lifting unit to move up and down, and the up-down lifting unit is linked with the pressing unit to move upwards to depart from the inner side of the bottom surface of the abrasive belt so as to release the abrasive belt, so that the abrasive belt deviates from the polishing and grinding area to displace, or move downwards to the inner side of the bottom surface of the abrasive belt so as to press the abrasive belt, so that the abrasive belt displaces towards the polishing and grinding area.

As a preferred scheme, the up-down lifting unit comprises a linkage rod, a lifting seat connected to the linkage rod and a transverse positioning block connected to the lifting seat, the linkage rod is connected to the second driving unit, and the pressing unit is connected below the transverse positioning block.

As a preferred scheme, the action wheel is provided with two, and two action wheels set up along the direction of delivery interval that is on a parallel with the conveyer belt to form the spacing of stepping down that supplies to compress tightly the unit and pass, compress tightly unit movable type about can be located the spacing of stepping down.

As a preferred scheme, the lifting seats are provided with two, the two lifting seats are symmetrically arranged on two sides of the conveying belt, one lifting seat is connected to the linkage rod, two ends of the transverse positioning block are respectively connected to the corresponding lifting seats, and two ends of each driving wheel are connected to the corresponding lifting seats.

Preferably, the driven wheel is connected with a pre-tightening mechanism for tightening the abrasive belt, the pre-tightening mechanism comprises a pre-tightening frame, a bearing plate and a third driving unit, the bearing plate is mounted on the pre-tightening frame, the third driving unit drives the bearing plate to move up and down, and the driven wheel is connected to the bearing plate.

As a preferred scheme, a plurality of positioning roller shafts are arranged above the conveying belt, each positioning roller shaft comprises a left positioning roller shaft and a right positioning roller shaft, the left positioning roller shaft and the right positioning roller shaft are respectively arranged on the left side and the right side of the driving wheel, and a positioning groove for the abrasive belt to pass through is formed between the driving wheel and the adjacent positioning roller shaft.

As a preferred scheme, the automatic feeding device is further provided with a discharging device, the discharging device comprises a discharging belt and a material moving mechanism, the material moving mechanism comprises a material moving unit and a fourth driving unit, and the fourth driving unit drives the material moving unit to reciprocate between the conveying belt and the discharging belt.

A ceramic polishing and grinding method is provided with a conveying belt, a polishing and grinding device, a polishing and grinding area, a pressing mechanism and a control device; the method comprises the following steps:

step one, conveying a workpiece: the control device controls the conveying belt to convey the workpiece to the polishing and grinding area;

step two, grinding: the control device controls the outer side surface of an abrasive belt of the polishing and grinding device to grind a workpiece, and simultaneously the control device controls the pressing mechanism to press the abrasive belt on the inner side of the bottom surface of the abrasive belt so as to enable the abrasive belt to move towards a polishing and grinding area.

Preferably, a pre-tightening mechanism is further provided, in the second step, before grinding, the control device controls the pre-tightening mechanism to pre-tighten the abrasive belt, then the control device controls the pressing mechanism to press the inner side of the bottom surface of the abrasive belt, and the control device controls the outer side surface of the abrasive belt of the polishing and grinding device to grind.

Compared with the prior art, the abrasive belt grinding device has the obvious advantages and beneficial effects, and particularly, according to the technical scheme, the adjustable pressing mechanism is arranged on one side of the driving wheel, the pressing mechanism can selectively act on the design of the abrasive belt, so that the abrasive belt can better grind the surface of a workpiece under the action of the pressing mechanism during grinding, different grinding degrees of the abrasive belt on the workpiece can be realized by adjusting the pressing mechanism, the purpose of controlling the grinding degree of the workpiece is achieved, the thickness of the workpiece is controllable, the roughness of the surface of the workpiece can be improved, and the manufacturing precision of the workpiece is improved;

secondly, the vertical lifting unit is arranged, so that the pressing unit can move in the vertical direction to press the abrasive belt better;

the loose abrasive belt in the standby state can be tensioned through the arrangement of the pre-tightening mechanism, so that the tightness of the abrasive belt can be adjusted, and the phenomenon that the service life is influenced because the abrasive belt is always in the tightened state is avoided;

still, through the setting of auxiliary positioning board, can make the work piece can have the support in order to keep the horizontality when being polished and ground, simultaneously, the upper and lower movable setting of auxiliary positioning board is favorable to adapting to processing, avoids appearing auxiliary positioning board and contacts with the conveyer belt always and influence the phenomenon of conveyer belt.

To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions achieved thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of an embodiment of the present invention;

FIG. 3 is a side view of the structure shown in FIG. 2;

FIG. 4 is a front view of the structure shown in FIG. 2;

FIG. 5 is another partial schematic structural view of an embodiment of the present invention;

fig. 6 is a partial cross-sectional view of an embodiment of the present invention.

The attached drawings indicate the following:

10. machine table 11 and left positioning roll shaft

12. Right positioning roller shaft 20 and conveying device

21. Conveyer belt 30, polishing grinder

31. Driving wheel 32, driven wheel

33. Abrasive belt 40 and pressing mechanism

41. Pressing unit 42 and second driving unit

43. Linkage rod 44 and lifting seat

45. Transverse positioning block 50 and pre-tightening mechanism

51. Pre-tightening frame 52 and bearing plate

53. Third drive unit 60, blanking device

61. Material discharging belt 62 and material moving mechanism

621. Material moving unit 622, fourth driving unit

70. Auxiliary positioning plate 80, fifth drive unit.

Detailed Description

Referring to fig. 1 to 6, specific structures of an embodiment of the invention are shown; the polishing and grinding machine is mainly applied to processing of ceramic plates and ceramic supports, but not limited to processing of ceramic plates and ceramic supports, and can also be applied to polishing and grinding of surfaces of other workpieces.

The adjustable ceramic polishing and grinding machine comprises a machine table 10, a conveying device 20 and a polishing and grinding device 30, wherein the conveying device 20 and the polishing and grinding device 30 are arranged on the machine table 10; the polishing and grinding device also comprises a control device which is respectively and electrically connected with the conveying device 20 and the polishing and grinding device 30;

the conveying device 20 comprises a conveying belt 21 and a first driving unit for driving the conveying belt 21 to move horizontally; the polishing and grinding device 30 comprises a driving wheel 31, a driven wheel 32 and an abrasive belt 33, wherein the driving wheel 31 and the driven wheel 32 are both arranged in a manner of extending along a direction perpendicular to the conveying direction of the conveying belt 21, the driving wheel 31 is positioned below the driven wheel 32, the abrasive belt 33 winds around the driving wheel 31 and the driven wheel 32, and a polishing and grinding area for a workpiece to pass through is formed between the outer side of the bottom surface of the abrasive belt 33 and the upper surface of the conveying belt 21; in this embodiment, two polishing and grinding devices 30 are provided, and the two polishing and grinding devices 30 are sequentially arranged at intervals along the conveying direction of the conveying belt 21 to realize secondary polishing and grinding and improve the precision of polishing and grinding;

an adjustable pressing mechanism 40 for pressing the abrasive belt 33 is arranged on one side of the driving wheel 31, and the pressing mechanism 40 comprises a pressing unit 41 and a second driving unit 42; second drive unit 42 drives pressing unit 41 to be selectively displaceable towards the inside of the bottom surface of sanding belt 33 or away from the inside of the bottom surface of sanding belt 33 to press sanding belt 33 or to release sanding belt 33 to displace sanding belt 33 towards or away from the polishing and grinding area. Therefore, through the arrangement of the pressing mechanism 40, the abrasive belt 33 can be better ground to the surface of the workpiece through the effect of the pressing mechanism 40 during grinding, different grinding degrees of the abrasive belt 33 on the workpiece can be realized by adjusting the pressing degree of the pressing unit 41 of the pressing mechanism 40, and the purpose of controlling the grinding degree of the workpiece is achieved, so that the thickness of the workpiece is controllable, the roughness of the surface of the workpiece can be improved, and the manufacturing precision of the workpiece is improved.

Specifically, the pressing mechanism 40 further includes an up-down lifting unit, and two ends of the up-down lifting unit are respectively connected to the second driving unit 42 and the pressing unit 41; the second driving unit 42 drives the up-down lifting unit to move up and down, and the up-down lifting unit is linked with the pressing unit 41 to move up and down to separate from the inner side of the bottom surface of the abrasive belt 33 so as to release the abrasive belt 33, so that the abrasive belt 33 is displaced away from the polishing and grinding area, or move down to the inner side of the bottom surface of the abrasive belt 33 so as to press the abrasive belt 33, so that the abrasive belt 33 is displaced towards the polishing and grinding area; the up-down lifting unit comprises a linkage rod 43, a lifting seat 44 connected to the linkage rod 43 and a transverse positioning block 45 connected to the lifting seat 44, the linkage rod 43 is connected to the second driving unit 42, and the pressing unit 41 is connected below the transverse positioning block 45. Therefore, through the arrangement of the up-down lifting unit, the displacement of the pressing unit 41 in the up-down direction can be realized, so as to press the abrasive belt 33 better.

In this embodiment, preferably, two driving wheels 31 are provided, the two driving wheels 31 are arranged at intervals along the conveying direction parallel to the conveying belt 21 to form a abdicating interval for the pressing unit 41 to pass through, and the pressing unit 41 can be located in the abdicating interval in a vertically movable manner; the two lifting seats 44 are symmetrically arranged on two sides of the conveying belt 21, one lifting seat 44 is connected to the linkage rod 43, two ends of the transverse positioning block 45 are respectively connected to the corresponding lifting seat 44, and two ends of each driving wheel 31 are connected to the corresponding lifting seats 44.

The driven wheel 32 is connected with a pre-tightening mechanism 50 for tightening the abrasive belt 33, the pre-tightening mechanism 50 comprises a pre-tightening frame 51, a bearing plate 52 and a third driving unit 53, the bearing plate 52 is mounted on the pre-tightening frame 51, the third driving unit 53 drives the bearing plate 52 to move up and down, and the driven wheel 32 is connected with the bearing plate 52; therefore, through the arrangement of the pre-tightening mechanism 50, the loose abrasive belt 33 in the standby state can be tightened, so that the tightness of the abrasive belt 33 can be adjusted, and the phenomenon that the service life is influenced because the abrasive belt 33 is always in the tightened state is avoided. The transverse positioning blocks 45 and the pressing units 41 are located below the pre-tightening frame 51, the driven wheels 32 are arranged in two numbers, the two driven wheels 32 are arranged at left and right intervals, inverted triangle structures are formed between the two driven wheels 32 and the two driving wheels 31, an abdicating space is formed between the four driven wheels 32 and the two driving wheels 31, the pre-tightening mechanisms 50, the transverse positioning blocks 45 and the pressing units 41 are all located in the abdicating space, and accordingly, ingenious intermediate abdicating positions are formed, so that corresponding structures can be arranged, the whole space is fully utilized, the structure layout is more compact, the whole space occupation is reduced, meanwhile, the inverted triangle structures are arranged, the winding of the abrasive belt 33 is more stable, the abrasive belt 33 is more stable during transmission, and the polishing and grinding quality is higher.

A plurality of positioning roller shafts are arranged above the conveying belt 21 and comprise a left positioning roller shaft 11 and a right positioning roller shaft 12, the left positioning roller shaft 11 and the right positioning roller shaft 12 are respectively arranged on the left side and the right side of the driving wheel 31, and a positioning groove for the abrasive belt 33 to pass through is formed between the driving wheel 31 and the adjacent positioning roller shafts.

In addition, in this embodiment, a blanking device 60 is further disposed on the machine table 10, and the blanking device 60 is connected to the control device; the blanking device 60 comprises a blanking belt 61 and a material moving mechanism 62, the material moving mechanism 62 comprises a material moving unit 621 and a fourth driving unit 622, and the fourth driving unit 622 drives the material moving unit 621 to reciprocate between the conveying belt 21 and the blanking belt 61; the material moving unit 621 is a vacuum chuck; borrow this, through unloader 60's setting, can realize the automatic unloading of work piece, just the direction of delivery of unloading material area 61 and conveyer belt 21 is opposite to make the material loading side of conveyer belt 21 and the unloading side of unloading material area 61 be located same side, the staff operation of being convenient for, simultaneously, can reduce the holistic length of board 10.

An auxiliary positioning plate 70 is further arranged on the machine table 10, the auxiliary positioning plate 70 is connected with a fifth driving unit 80, and the fifth driving unit 80 is arranged inside the machine table 10; the conveyer belt 21 is an endless conveyer belt 21, the endless conveyer belt 21 is provided with an upper conveyer belt and a lower conveyer belt, the auxiliary positioning plate 70 is arranged corresponding to the polishing and grinding area and is positioned at the bottom of the upper conveyer belt, the auxiliary positioning plate 70 is positioned between the upper conveyer belt and the lower conveyer belt in an avoiding manner, and the fifth driving unit 80 drives the auxiliary positioning plate 70 to reciprocate up and down between the upper conveyer belt and the lower conveyer belt; therefore, through the arrangement of the auxiliary positioning plate 70, the workpiece can be supported to keep a horizontal state when being polished and ground, and meanwhile, the auxiliary positioning plate 70 can be movably arranged up and down, so that the auxiliary positioning plate 70 is beneficial to adapting to processing, and the phenomenon that the auxiliary positioning plate 70 always contacts with the conveying belt 21 to influence the conveying belt 21 is avoided.

In the present embodiment, the first driving unit, the fourth driving unit 622, and the fifth driving unit 80 are preferably driven by motors, and the second driving unit 42 and the third driving unit 53 are preferably driven by air cylinders, but the present invention is not limited to the above driving.

A protective cover is arranged on the machine table 10, and a box door is arranged outside the polishing and grinding device 30; so as to protect the internal structure through the design of the protective cover and the box door.

The operation process is as follows: the method comprises the following steps:

step one, conveying a workpiece: the control device controls the conveying belt 21 to convey the workpiece to the polishing and grinding area; here, after the workpiece is conveyed to the polishing and grinding area, the fifth driving unit 80 is controlled by the control device to drive the auxiliary positioning plate 70 to move upwards and abut against the lower part of the upper side conveying belt so as to support the workpiece;

step two, grinding: the control device controls the outer side surface of the abrasive belt 33 of the polishing and grinding device 30 to grind the workpiece, and simultaneously the control device controls the pressing mechanism 40 to press the abrasive belt 33 on the inner side of the bottom surface of the abrasive belt 33 so as to enable the abrasive belt 33 to displace towards the polishing and grinding area; here, before grinding, the control device controls the pre-tightening mechanism 50 to pre-tighten the sanding belt 33, and then the control device controls the pressing mechanism 40 to press the sanding belt 33 on the inner side of the bottom surface (here, the control device can control the degree of pressing the sanding belt 33 by the pressing mechanism 40), and the outer side surface of the sanding belt 33 of the polishing and grinding device 30 is ground.

In summary, the design of the present invention is characterized in that an adjustable pressing mechanism is disposed on one side of a driving wheel, and the pressing mechanism can selectively act on the design of an abrasive belt, so that the abrasive belt can better grind and flatten the surface of a workpiece under the action of the pressing mechanism during grinding, and different grinding degrees of the abrasive belt on the workpiece can be realized by adjusting the pressing mechanism, so as to achieve the purpose of controlling the grinding degree of the workpiece, thereby controlling the thickness of the workpiece, improving the roughness of the surface of the workpiece, and improving the manufacturing accuracy of the workpiece;

secondly, the vertical lifting unit is arranged, so that the pressing unit can move in the vertical direction to press the abrasive belt better;

the loose abrasive belt in the standby state can be tensioned through the arrangement of the pre-tightening mechanism, so that the tightness of the abrasive belt can be adjusted, and the phenomenon that the service life is influenced because the abrasive belt is always in the tightened state is avoided;

still, through the setting of auxiliary positioning board, can make the work piece can have the support in order to keep the horizontality when being polished and ground, simultaneously, the upper and lower movable setting of auxiliary positioning board is favorable to adapting to processing, avoids appearing auxiliary positioning board and contacts with the conveyer belt always and influence the phenomenon of conveyer belt.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.