An automatic conversion device for surface grading and polishing

Abstract

The present invention discloses an automatic conversion device for surface grading and polishing, comprising: a gantry support member; a polishing member, which includes a rotary vertical member, a polishing carrier member, and an actual polishing member; a sand belt automatic replacement member, which includes a sand belt folding member and a sand belt automatic replacement arm. Both the sand belt folding member and the sand belt automatic replacement arm are arranged on the polishing carrier member. The sand belt folding member is used for folding and placing an ultra-long sand belt, and the sand belt automatic replacement arm automatically transfers the sand belt folding member with the ultra-long sand belt to a predetermined position and automatically replaces the ultra-long sand belt onto the actual polishing member to polish the metal plate. The structure of the present invention is reasonably designed, has a high degree of automation, significantly reduces the difference in surface polishing, significantly improves the surface polishing efficiency, has no personnel participation in the polishing process and the sand belt replacement process, significantly reduces the physical harm to personnel caused by polishing, and can automatically perform grading polishing on the metal surface according to the thickness of the replaced sand belt.

Description

Technical Field

[0001] The present invention relates to the technical field of board surface grinding and polishing. More specifically, the present invention relates to an automatic conversion device for hierarchical polishing of board surfaces. Background Art

[0002] In the manufacturing industry, polishing and grinding are important processing techniques to make the metal surface meet the predetermined requirements. Due to the large area of the board surface, manual processing and polishing techniques are generally used in the existing polishing processes. Manual processing has problems such as poor product consistency and low efficiency. More seriously, dust is generated during sanding and polishing, which seriously affects the physical health of the operating workers. During the current upgrade of the manufacturing industry, a large number of automatic polishing lines have emerged. However, due to the limited length of a single sanding belt of the sanding belt polishing machine, after each sanding belt processes a certain area of the metal plate, a new sanding belt must be replaced to ensure the processing quality and speed of the workpiece being processed. Currently, most automatic polishing devices still use manual sanding belt replacement. Before replacing the sanding belt, manual shutdown is required, and after replacement, startup is required, which is time-consuming and laborious and seriously affects the production efficiency of automatic polishing of the metal surface. Especially when high-quality polishing of the board surface is required, the polishing process usually requires an overall rough polishing of the board surface first and then a fine polishing of the board surface, which further exacerbates the demand for the replacement frequency of the polishing belt and the polishing efficiency. Summary of the Invention

[0003] In order to overcome the above defects, the present invention provides an automatic conversion device for hierarchical polishing of board surfaces, and specifically adopts the following technical solutions:

[0004] An automatic conversion device for hierarchical polishing of board surfaces, comprising:

[0005] A gantry support member, which provides support for the metal plate to be polished and the polishing equipment;

[0006] A polishing member, which is arranged on the gantry support member and comprises a rotary vertical member, a polishing carrier member and an implementing polishing member. The rotary vertical member provides circumferential rotation and vertical movement on the gantry support member, and the polishing carrier member provides support for the implementing polishing member on the rotary vertical member;

[0007] A sanding belt automatic replacement member, which is arranged on the polishing member and comprises a sanding belt folding member and a sanding belt automatic replacement arm. Both the sanding belt folding member and the sanding belt automatic replacement arm are arranged on the polishing carrier member. The sanding belt folding member is used to fold and place the ultra-long sanding belt, and the sanding belt automatic replacement arm automatically transfers the sanding belt folding member with the ultra-long sanding belt to a predetermined position and automatically installs the ultra-long sanding belt onto the implementing polishing member to polish the metal plate.

[0008] Preferably, the horizontal rotation section of the rotary vertical member provides circumferential rotation on the gantry support member, and the vertical movement section of the rotary vertical member provides vertical movement on the gantry support member; the polishing implement includes a grinding head swing frame, a grinding head polishing member, and a grinding head power member. The grinding head swing frame is arranged on the vertical movement section. The grinding head polishing member includes a driving wheel, a tensioning frame, an automatic telescopic rod, and a driven wheel. The driving wheel is arranged at one end of the grinding head swing frame through a driving shaft arranged thereon. One end of the tensioning frame is arranged at one end of the grinding head swing frame. The bottom end of the automatic telescopic rod is arranged at the other end of the tensioning frame. The driven wheel is arranged at the top end of the automatic telescopic rod. The grinding head power member is arranged at the other end of the grinding head swing frame and transmits power to the driving shaft.

[0009] Preferably, the sand belt folding member includes a sand belt horizontal folding member, a sand belt vertical folding member, and a folding accommodating member. The sand belt vertical folding member is arranged on the sand belt horizontal folding member. The folding accommodating member is arranged on the polishing bearing member; the sand belt horizontal folding member includes a horizontal folding tube, a horizontal anti-twist member, and a transmission connecting member. The horizontal anti-twist member and the transmission connecting member are both arranged on the horizontal folding tube; the horizontal folding tube includes a first horizontal folding tube and a second horizontal folding tube. One end of the second horizontal folding tube is embedded in the tube of one end of the first horizontal folding tube, and a first sliding sealing ring is sleeved on one end of the second horizontal folding tube. The two second horizontal folding tubes are correspondingly arranged at both ends of the first horizontal folding tube.

[0010] Preferably, the horizontal anti-twist member includes an anti-twist horizontal fixing rod, an anti-twist horizontal sliding rod, and an anti-twist horizontal sliding tube. The anti-twist horizontal fixing rod is arranged on the horizontal folding tube. The anti-twist horizontal sliding rod and the anti-twist horizontal sliding tube are both arranged on the anti-twist horizontal fixing rod; the anti-twist horizontal fixing rod includes a first anti-twist horizontal fixing rod and a second anti-twist horizontal fixing rod. The first anti-twist horizontal fixing rod is arranged radially in the first horizontal folding tube. The second anti-twist horizontal fixing rod is arranged radially in the second horizontal folding tube; a plurality of the second anti-twist horizontal fixing rods correspond to a plurality of the second horizontal folding tubes one by one; the anti-twist horizontal sliding rod is in a rectangular column shape. One end of the anti-twist horizontal sliding rod is arranged on the first anti-twist horizontal fixing rod. A plurality of the anti-twist horizontal sliding rods are symmetrically distributed on the first anti-twist horizontal fixing rod; the anti-twist horizontal sliding tube is in a rectangular tube shape. The anti-twist horizontal sliding tube is arranged on the second anti-twist horizontal fixing rod, and the anti-twist horizontal sliding tube is fitted and sleeved on the free end of the anti-twist horizontal sliding rod.

[0011] Preferably, the transmission connecting member includes a connecting fixed pipe, a first return spring, a locking sliding pipe, and locking steel balls. One end of the connecting fixed pipe is arranged on the first transverse folding pipe. The first return spring is sleeved on the outer wall of one end of the connecting fixed pipe, and one end of the first return spring is fixedly connected to the outer wall of the connecting fixed pipe. The locking sliding pipe is sleeved on the connecting fixed pipe. One end of the locking sliding pipe is connected to the other end of the first return spring. The locking steel balls are embedded in locking holes on the wall of the connecting fixed pipe. A plurality of the locking holes are evenly distributed around the circumference of the connecting fixed pipe. A plurality of the locking steel balls correspond to the plurality of locking holes one by one. A first sealing annular plate is arranged in the connecting fixed pipe.

[0012] Preferably, the abrasive belt vertical folding member includes a vertical folding pipe, a vertical anti-twist member, and a rolling buckling folding member. The vertical folding pipe is arranged on the transverse folding pipe. The vertical anti-twist member and the rolling buckling folding member are both arranged on the vertical folding pipe. The vertical folding pipe includes a first vertical folding pipe, a second vertical folding pipe, a third vertical folding pipe, a fourth vertical folding pipe, a fifth vertical folding pipe, and a sixth vertical folding pipe. The middle of the first vertical folding pipe is arranged on the free end of the second transverse folding pipe, and the first vertical folding pipe is communicated with the second transverse folding pipe. One end of the second vertical folding pipe is embedded in the pipe at one end of the first vertical folding pipe through a second sliding sealing ring arranged thereon. Two of the second vertical folding pipes are correspondingly embedded in the pipes at both ends of the first vertical folding pipe. One end of the third vertical folding pipe is embedded in the free end pipe of the second vertical folding pipe through a third sliding sealing ring arranged thereon. Two of the third vertical folding pipes correspond to the two second vertical folding pipes one by one. One end of the fourth vertical folding pipe is embedded in the free end pipe of the third vertical folding pipe through a fourth sliding sealing ring arranged thereon. Two of the fourth vertical folding pipes correspond to the two third vertical folding pipes one by one. One end of the fifth vertical folding pipe is embedded in the free end pipe of the fourth vertical folding pipe through a fifth sliding sealing ring arranged thereon. Two of the fifth vertical folding pipes correspond to the two fourth vertical folding pipes one by one. One end of the sixth vertical folding pipe is embedded in the free end pipe of the fifth vertical folding pipe through a sixth sliding sealing ring arranged thereon. Two of the sixth vertical folding pipes correspond to the two fifth vertical folding pipes one by one.

[0013] The vertical anti-torsion member includes an anti-torsion vertical fixing rod, an anti-torsion vertical sliding rod, and an anti-torsion vertical sliding tube. The anti-torsion vertical fixing rod is provided on the vertical folding tube, and the anti-torsion vertical sliding rod and the anti-torsion vertical sliding tube are both provided on the anti-torsion vertical fixing rod. The anti-torsion vertical fixing rod includes a first anti-torsion vertical fixing rod, a second anti-torsion vertical fixing rod, a third anti-torsion vertical fixing rod, a fourth anti-torsion vertical fixing rod, a fifth anti-torsion vertical fixing rod, and a sixth anti-torsion vertical fixing rod. The first anti-torsion vertical fixing rod is arranged radially on the first vertical folding tube. The second anti-torsion vertical fixing rod is arranged radially on the second vertical folding tube, and the two second anti-torsion vertical fixing rods correspond to the two second vertical folding tubes one by one. The third anti-torsion vertical fixing rod is arranged radially on the third vertical folding tube, and the two third anti-torsion vertical fixing rods correspond to the two third vertical folding tubes one by one. The fourth anti-torsion vertical fixing rod is arranged radially on the fourth vertical folding tube, and the two fourth anti-torsion vertical fixing rods correspond to the two fourth vertical folding tubes one by one. The fifth anti-torsion vertical fixing rod is arranged radially on the fifth vertical folding tube, and the two fifth anti-torsion vertical fixing rods correspond to the two fifth vertical folding tubes one by one. The sixth anti-torsion vertical fixing rod is arranged radially on the sixth vertical folding tube, and the two sixth anti-torsion vertical fixing rods correspond to the two sixth vertical folding tubes one by one.

[0014] The anti-torsion vertical sliding rod is in the shape of a rectangular column. One end of the anti-torsion vertical sliding rod is provided on the first anti-torsion vertical fixing rod, and the two anti-torsion vertical sliding rods are symmetrically distributed on the first anti-torsion vertical fixing rod. The anti-torsion vertical sliding tube includes a first anti-torsion vertical sliding tube, a second anti-torsion vertical sliding tube, a third anti-torsion vertical sliding tube, a fourth anti-torsion vertical sliding tube, and a fifth anti-torsion vertical sliding tube. The first anti-torsion vertical sliding tube is in the shape of a rectangular tube and is provided on the second anti-torsion vertical fixing rod. One end of the first anti-torsion vertical sliding tube is sleeved on the other end of the anti-torsion vertical sliding rod. The second anti-torsion vertical sliding tube is provided on the third anti-torsion vertical fixing rod, and one end of the second anti-torsion vertical sliding tube is sleeved on the other end of the first anti-torsion vertical sliding tube. The third anti-torsion vertical sliding tube is provided on the fourth anti-torsion vertical fixing rod, and one end of the third anti-torsion vertical sliding tube is sleeved on the other end of the second anti-torsion vertical sliding tube. The fourth anti-torsion vertical sliding tube is provided on the fifth anti-torsion vertical fixing rod, and one end of the fourth anti-torsion vertical sliding tube is sleeved on the other end of the third anti-torsion vertical sliding tube. The fifth anti-torsion vertical sliding tube is provided on the sixth anti-torsion vertical fixing rod, and one end of the fifth anti-torsion vertical sliding tube is sleeved on the other end of the fourth anti-torsion vertical sliding tube.

[0015] Preferably, the rolling buckle folding member includes a rolling mounting seat, a rolling tube, a wind power runner, a buckling fixed tube, a second return spring, a buckling claw and a first magnetic coil. The rolling mounting seat is arranged at the other end of the sixth vertical folding tube. The rolling tube is arranged on the two groove walls of the rolling mounting seat through connecting shafts on both end faces. The wind power runner is arranged at the free end of the connecting shaft. A runner housing is sleeved outside the wind power runner. A first high-pressure hose is connected through the runner housing. An automatic gate valve is arranged on the first high-pressure hose. An external ventilation hole is arranged on the runner housing. The free end of the first high-pressure hose communicates with the sixth vertical folding tube.

[0016] Preferably, one end of the buckling fixed tube penetrates through one end face of the rolling tube. The second return spring is embedded in the other end tube of the buckling fixed tube. The buckling claw is L-shaped. The top end of the buckling claw is embedded in the one end tube of the buckling fixed tube. The first magnetic coil is embedded in the one end tube of the buckling fixed tube and sleeved outside one end of the buckling claw. Two groups of the rolling buckle folding members are arranged corresponding to the other ends of the two sixth vertical folding tubes one by one. Two sets of the sand belt vertical folding members correspond to the two second horizontal folding tubes one by one. The folding accommodation member includes a folding accommodation tube and an accommodation seat. One end of the folding accommodation tube is arranged on the side wall of the polishing carrier. The accommodation seat includes an accommodation fixed male seat and an accommodation fixed female seat. The accommodation fixed male seat is fixed on the side wall of the polishing carrier in the folding accommodation tube. The accommodation fixed female seat is arranged on the first horizontal folding tube. A plurality of the folding accommodation members are installed at a predetermined position according to needs.

[0017] Preferably, the abrasive belt automatic replacement arm includes a folding mounting base, a first folding arm, a second folding arm, a third folding arm and a gripping connector. The folding mounting base is arranged on the rotary vertical member. The first folding arm is arranged on the folding mounting base. The second folding arm is arranged on the first folding arm. The third folding arm is arranged on the second folding arm. The gripping connector is arranged on the third folding arm. The folding mounting base includes a circumferential rotating tube, a first rotating gear, a first motor and a first gear. The circumferential rotating tube is sleeved on the vertical moving section, and the circumferential rotating tube rotates circumferentially and is axially locked on the vertical moving section. The first rotating gear is sleeved on the vertical moving section and then connected to one end of the circumferential rotating tube. The first motor is arranged on the vertical moving section. The first gear is meshed with the first rotating gear on the rotating shaft of the first motor. The first folding arm includes a second motor, a first swing arm rotating shaft and a first support rod. The second motor is arranged on the vertical moving section. One end of the first swing arm rotating shaft is arranged on the rotating shaft of the second motor. The first support rod is arranged on the first swing arm rotating shaft. The second folding arm includes a third motor, a second swing arm rotating shaft and a second support rod. The third motor is fixedly connected to the other end of the first support rod through a connecting block. One end of the second swing arm rotating shaft is arranged on the rotating shaft of the third motor. The other end of the second swing arm rotating shaft is inserted into a rotating groove on the other end face of the first support rod. One end of the second support rod is connected to the second swing arm rotating shaft.

[0018] Preferably, the third folding arm includes a fourth motor and a third swing arm rotating shaft. The fourth motor is arranged on the other end of the second support rod. One end of the third swing arm rotating shaft is connected to the rotating shaft of the fourth motor. The gripping connector includes a sliding tube, a second magnetic coil, a second sealing annular plate, a reducing pipe and a locking pipe. The sliding tube is sleeved on the other end of the third swing arm rotating shaft. The second magnetic coil is embedded in the sliding tube and sleeved on the third swing arm rotating shaft. The second sealing annular plate is embedded in the sliding tube. The inner ring of the second sealing annular plate is in the shape of a rectangular hole. The second sealing annular plate is sleeved on a rectangular sliding groove on the outer wall of the other end of the third swing arm rotating shaft through its inner ring. The large end of the reducing pipe is connected to one end of the sliding tube in a penetrating manner. One end of the locking pipe is connected to the small end of the reducing pipe in a penetrating manner.

[0019] The present invention has at least the following beneficial effects:

[0020] 1) The automatic conversion device for hierarchical polishing of the plate surface of the present invention has a reasonable structure design, a high degree of automation, significantly reduces the difference in plate surface polishing, significantly improves the plate surface polishing efficiency, has no personnel participation in the polishing process and the sand belt replacement process, significantly reduces the physical harm to personnel caused by polishing, and can automatically perform hierarchical polishing on the metal plate surface according to the thickness of the replaced sand belt;

[0021] 2) The automatic conversion device for hierarchical polishing of the plate surface of the present invention is provided with a sand belt folding member, which is composed of multiple sections of folding tubes and can significantly provide a reduction rate and an elongation rate, facilitating the temporary storage of the sand belt folding member; and the sand belt folding member realizes the folding and unfolding of the ultra-long sand belt by means of pneumatic folding and unfolding. On the premise of effectively folding the ultra-long sand belt, the self-weight of the sand belt folding member can be significantly reduced, facilitating the grasping and replacement of the sand belt folding member by the automatic sand belt replacement arm on the grinding head polishing member;

[0022] 3) The automatic conversion device for hierarchical polishing of the plate surface of the present invention is provided with an automatic sand belt replacement arm, which grasps the sand belt folding member according to a predetermined program and moves it to a predetermined position, fully unfolds one of the sand belt folding members, transfers the old sand belt that needs to be replaced from the grinding head polishing member and fully folds it, and temporarily stores it in one of the folding accommodating members; the automatic sand belt replacement arm grasps and moves the sand belt folding member with a new sand belt to a predetermined position according to a predetermined program and replaces it on the grinding head polishing member, significantly improving the degree of automation and the plate surface polishing efficiency, and significantly reducing the difference in plate surface polishing.

[0023] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the polishing member in the automatic conversion device for hierarchical polishing of the plate surface of the present invention;

[0025] Figure 2 It is the front side main view of the polishing member in the automatic conversion device for hierarchical polishing of the plate surface of the present invention;

[0026] Figure 3 It is the left three-dimensional structure schematic diagram of the polishing member in the automatic conversion device for hierarchical polishing of the plate surface of the present invention;

[0027] Figure 4 It is the right three-dimensional structure schematic diagram of the polishing member in the automatic conversion device for hierarchical polishing of the plate surface of the present invention;

[0028] Figure 5 It is the front view of the sand belt folding member in the automatic conversion device for hierarchical polishing of the plate surface of the present invention;

[0029] Figure 6It is the top view of the abrasive belt folding part in the automatic conversion device for hierarchical polishing of the board surface of the present invention;

[0030] Figure 7 It is the three-dimensional structure schematic diagram of the abrasive belt folding part in the automatic conversion device for hierarchical polishing of the board surface of the present invention;

[0031] Figure 8 In the automatic conversion device for hierarchical polishing of the board surface of the present invention Figure 5 It is the three-dimensional structure schematic diagram of the sectional view in the A-A direction;

[0032] Figure 9 In the automatic conversion device for hierarchical polishing of the board surface of the present invention Figure 8 It is the partial enlarged view of C;

[0033] Figure 10 In the automatic conversion device for hierarchical polishing of the board surface of the present invention Figure 6 It is the three-dimensional structure schematic diagram of the sectional view in the B-B direction;

[0034] Figure 11 In the automatic conversion device for hierarchical polishing of the board surface of the present invention Figure 10 It is the partial enlarged view of D;

[0035] Figure 12 It is the schematic diagram of the connection relationship between the grasping connecting piece and the transmission connecting piece in the automatic conversion device for hierarchical polishing of the board surface of the present invention;

[0036] Figure 13 It is the longitudinal sectional schematic diagram of the connection relationship between the grasping connecting piece and the transmission connecting piece in the automatic conversion device for hierarchical polishing of the board surface of the present invention.

[0037] Wherein: 1 - Rotary vertical member, 2 - Polishing carrier, 3 - Grinding head swing frame, 4 - Grinding head power member, 5 - Pivot, 6 - Driving wheel, 7 - Tensioning frame, 8 - Automatic telescopic rod, 9 - Driven wheel, 10 - First transverse folding tube, 11 - Second transverse folding tube, 12 - First anti-twist transverse fixing rod, 13 - Second anti-twist transverse fixing rod, 14 - Anti-twist transverse sliding rod, 15 - Anti-twist transverse sliding tube, 16 - Connecting and fixing tube, 17 - First return spring, 18 - Locking sliding tube, 19 - Locking steel ball, 20 - First vertical folding tube, 21 - Second vertical folding tube, 22 - Third vertical folding tube, 23 - Fourth vertical folding tube, 24 - Fifth vertical folding tube, 25 - Sixth vertical folding tube, 26 - First anti-twist vertical fixing rod, 27 - Second anti-twist vertical fixing rod, 28 - Third anti-twist vertical fixing rod, 29 - Fourth anti-twist vertical fixing rod, 30 - Fifth anti-twist vertical fixing rod, 31 - Sixth anti-twist vertical fixing rod, 32 - First anti-twist vertical sliding tube, 33 - Second anti-twist vertical sliding tube, 34 - Third anti-twist vertical sliding tube, 35 - Fourth anti-twist vertical sliding tube, 36 - Fifth anti-twist vertical sliding tube, 37 - Rolling mounting seat, 38 - Rolling tube, 39 - Wind power runner, 40 - Buckling and fixing tube, 41 - Second return spring, 42 - Buckling claw, 43 - First magnetic coil, 44 - Runner housing, 45 - Folding accommodating tube, 46 - Accommodating seat, 47 - Circumferential rotating tube, 48 - First support rod, 49 - Third motor, 50 - Second swing arm rotating shaft, 51 - Second support rod, 52 - Fourth motor, 53 - Third swing arm rotating shaft, 54 - Sliding tube, 55 - Second magnetic coil, 56 - Second sealing annular plate, 57 - Reducing pipe, 58 - Locking tube, 59 - Ventilation relay hole, 60 - Gripping connecting piece, 61 - Rectangular sliding groove, 62 - First sealing annular plate. Detailed implementation manners

[0038] The technical solutions of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention.

[0039] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another association object relationship, indicating that two relationships can exist. For example, A / and B can represent: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally represents that the front and rear associated objects are in an "or" relationship.

[0040] According to Figures 1 - 13As shown in the figure, an automatic conversion device for surface grading and polishing includes a gantry support, a polishing component, and a sand belt automatic replacement component. The polishing component is arranged on the gantry support, and the sand belt automatic replacement component is arranged on the polishing component. The gantry support includes a surface support table, a moving gantry, and a lateral moving component. The surface support table and the moving gantry are both arranged on the ground, and the lateral moving component is arranged on the moving gantry. The surface support table is used to support the metal plate to be polished. The moving gantry is arranged on the ground after spanning the surface support table, and the moving gantry can move longitudinally along the surface support table on the ground. The lateral moving component is arranged on the moving gantry to move laterally along the surface support table. The lateral moving component is used to install the polishing component and drive the polishing component to move laterally. Further, an electrical control cabinet, a hydraulic control station, a pneumatic control station, and a cooling water circulation device are also arranged on the moving gantry to provide hardware support for the normal polishing of the metal plate and the automatic replacement of the sand belt.

[0041] The polishing component includes a rotary vertical component 1, a polishing carrier component 2, and an actual polishing component. The rotary vertical component 1 is arranged on the lateral moving component, the polishing carrier component 2 is arranged on the rotary vertical component 1, and the actual polishing component is arranged on the polishing carrier component 2. The horizontal rotary section of the rotary vertical component 1 provides horizontal circumferential rotation on the lateral moving component, and the vertical moving section of the rotary vertical component 1 provides vertical movement on the lateral moving component. The polishing carrier component 2 is arranged on the vertical moving section to horizontally circumferentially rotate and vertically move along with the rotary vertical component 1. One end of the polishing carrier component 2 is in the shape of a rectangular column, and one end of the polishing carrier component 2 is vertically and fixedly arranged at the bottom end of the vertical moving section. The other end of the polishing carrier component 2 is in the shape of a lower fork, and the lower fork is used to install the actual polishing component.

[0042] The described polishing part includes a grinding head swing frame 3, a grinding head polishing part, and a grinding head power part 4. The grinding head swing frame 3 is arranged on the polishing carrier 2, and both the grinding head polishing part and the grinding head power part 4 are arranged on the grinding head swing frame 3. The grinding head swing frame 3 is sleeved on a pivot 5 on the lower fork through a grinding head swing tube arranged thereon, so that the grinding head swing frame 3 swings at both ends on the polishing carrier 2 through the grinding head swing tube and the pivot 5, to control the pressure on the plate surface during the polishing process of the grinding head polishing part. The grinding head polishing part includes an active transmission part and a tensioned driven part. The active transmission part is arranged on the grinding head swing frame 3, and the tensioned driven part is arranged on the active transmission part. The active transmission part includes an active wheel 6, and the active wheel 6 horizontally penetrates through one end of the grinding head swing frame 3 through an active shaft arranged thereon. The tensioned driven part includes a tensioning frame 7, an automatic telescopic rod 8, and a driven wheel 9. One end of the tensioning frame 7 is arranged on one end of the grinding head swing frame 3 in the vertical direction. The bottom end of the automatic telescopic rod 8 is arranged on the other end of the tensioning frame 7, and the driven wheel 9 is arranged on the top end of the automatic telescopic rod 8, to move up and down as the automatic telescopic rod 8 extends and contracts, thereby tensioning the abrasive belt sleeved on the active wheel 6 and the driven wheel 9 at the same time. The grinding head power part 4 includes a first motor, and the first motor is fixedly arranged on the other end of the grinding head swing frame 3 and provides torque to the active shaft through a belt.

[0043] The abrasive belt automatic replacement part includes an abrasive belt folding part and an abrasive belt automatic replacement arm, and both the abrasive belt folding part and the abrasive belt automatic replacement arm are arranged on the polishing carrier 2. The abrasive belt folding part includes an abrasive belt horizontal folding part, an abrasive belt vertical folding part, and a folding accommodating part. The abrasive belt vertical folding part is arranged on the abrasive belt horizontal folding part, and the folding accommodating part is arranged on the polishing carrier 2. The abrasive belt horizontal folding part includes a horizontal folding tube, a horizontal anti-twist part, and a transmission connecting part. Both the horizontal anti-twist part and the transmission connecting part are arranged on the horizontal folding tube. The horizontal folding tube includes a first horizontal folding tube 10 and a second horizontal folding tube 11. One end of the second horizontal folding tube 11 is embedded in the tube of one end of the first horizontal folding tube 10. Further, a first sliding sealing ring is sleeved on one end of the second horizontal folding tube 11, so that the second horizontal folding tube 11 can slide axially and seal reciprocally in the first horizontal folding tube 10. As an option, there are two second horizontal folding tubes 11, and the two second horizontal folding tubes 11 are correspondingly arranged at both ends of the first horizontal folding tube 10, so that the two second horizontal folding tubes 11 can simultaneously slide and contract axially and seal into the tubes at both ends of the first horizontal folding tube 10, to increase the folding rate of the horizontal folding tube, and further increase the reduction rate of the abrasive belt automatic replacement part, so as to facilitate placing the reduced abrasive belt automatic replacement part on the folding accommodating part.

[0044] The transverse anti-torsion member includes an anti-torsion transverse fixing rod, an anti-torsion transverse sliding rod 14 and an anti-torsion transverse sliding tube 15. The anti-torsion transverse fixing rod is arranged on the transverse folding tube. The anti-torsion transverse sliding rod 14 and the anti-torsion transverse sliding tube 15 are both arranged on the anti-torsion transverse fixing rod. The anti-torsion transverse fixing rod includes a first anti-torsion transverse fixing rod 12 and a second anti-torsion transverse fixing rod 13. The first anti-torsion transverse fixing rod 12 is fixedly arranged radially in the first transverse folding tube 10, and the second anti-torsion transverse fixing rod 13 is fixedly arranged radially in the second transverse folding tube 11. Further, the two second anti-torsion transverse fixing rods 13 correspond to the two second transverse folding tubes 11 one by one. The anti-torsion transverse sliding rod 14 is in the shape of a rectangular column. One end of the anti-torsion transverse sliding rod 14 is horizontally and perpendicularly fixedly arranged on the first anti-torsion transverse fixing rod 12, and the two anti-torsion transverse sliding rods 14 are symmetrically distributed on the first anti-torsion transverse fixing rod 12. The anti-torsion transverse sliding tube 15 is in the shape of a rectangular tube. The anti-torsion transverse sliding tube 15 is horizontally and perpendicularly fixedly arranged on the second anti-torsion transverse fixing rod 13, and the anti-torsion transverse sliding tube 15 is fitted and sleeved on the free end of the anti-torsion transverse sliding rod 14 to prevent the first transverse folding tube 10 and the second transverse folding tube 11 from twisting during the process of being compressed and elongated in the transverse folding tube.

[0045] The transmission connecting piece includes a connecting fixed pipe 16, a first return spring 17, a locking sliding pipe 18 and locking steel balls 19. One end of the connecting fixed pipe 16 is horizontally and fixedly arranged on the first transverse folding pipe 10, and the axis of the connecting fixed pipe 16 is perpendicular to the first transverse folding pipe 10. The first return spring 17 is sleeved on the outer wall of one end of the connecting fixed pipe 16, and one end of the first return spring 17 is fixedly connected to the outer wall of one end of the connecting fixed pipe 16. The locking sliding pipe 18 is sleeved on the connecting fixed pipe 16, so that the locking sliding pipe 18 can reciprocate axially on the connecting fixed pipe 16. One end of the locking sliding pipe 18 is connected to the other end of the first return spring 17, so that the locking sliding pipe 18 can be pushed by the first return spring 17. Further, an enlarged hole is provided on the inner wall of one end of the locking sliding pipe 18. The enlarged hole is in the shape of a stepped hole, and the small end of the enlarged hole communicates with the locking sliding pipe 18. The locking steel balls 19 are embedded in the locking holes on the wall of the connecting fixed pipe 16, and the four locking holes are evenly distributed around the circumference of the connecting fixed pipe 16. The four locking steel balls 19 correspond to the four locking holes one by one. When the first return spring 17 elongates, it pushes the locking sliding pipe 18 to move leftward. The locking sliding pipe 18 moving leftward presses the locking steel balls 19 radially inward along the connecting fixed pipe 16 through the enlarged hole, thereby locking and connecting the connecting fixed pipe 16 with the abrasive belt automatic replacement arm. A first sealing annular plate 62 is arranged in the connecting fixed pipe 16. Further, the connecting fixed pipe 16 is a magnet pipe.

[0046] The abrasive belt vertical folding member includes a vertical folding tube, a vertical anti-twist member, and a rolling snap folding member. The vertical folding tube is disposed on the horizontal folding tube. The vertical anti-twist member and the rolling snap folding member are both disposed on the vertical folding tube. The vertical folding tube includes a first vertical folding tube 20, a second vertical folding tube 21, a third vertical folding tube 22, a fourth vertical folding tube 23, a fifth vertical folding tube 24, and a sixth vertical folding tube 25. The middle of the first vertical folding tube 20 is vertically and fixedly disposed on the free end of the second horizontal folding tube 11, and the first vertical folding tube 20 communicates with the second horizontal folding tube 11. One end of the second vertical folding tube 21 is fitted with a second sliding seal ring. The second vertical folding tube 21 is fitted into the tube at one end of the first vertical folding tube 20 through the second sliding seal ring, so that the second vertical folding tube 21 can vertically and sealingly slide within the first vertical folding tube 20. Two of the second vertical folding tubes 21 are correspondingly fitted into the tubes at both ends of the first vertical folding tube 20, so that the two second vertical folding tubes 21 can be folded within the first vertical folding tube 20 simultaneously. One end of the third vertical folding tube 22 is sleeved with a third sliding seal ring. The third vertical folding tube 22 is fitted into the tube at the free end of the second vertical folding tube 21 through the third sliding seal ring, so that the third vertical folding tube 22 can vertically and sealingly slide within the second vertical folding tube 21. Two of the third vertical folding tubes 22 correspond one by one to the two second vertical folding tubes 21, so that the third vertical folding tube 22 can be folded within the second vertical folding tube 21. One end of the fourth vertical folding tube 23 is sleeved with a fourth sliding seal ring. The fourth vertical folding tube 23 is fitted into the tube at the free end of the third vertical folding tube 22 through the fourth sliding seal ring, so that the fourth vertical folding tube 23 can vertically and sealingly slide within the third vertical folding tube 22. Two of the fourth vertical folding tubes 23 correspond one by one to the two third vertical folding tubes 22, so that the fourth vertical folding tube 23 can be folded within the third vertical folding tube 22. One end of the fifth vertical folding tube 24 is sleeved with a fifth sliding seal ring. The fifth vertical folding tube 24 is fitted into the tube at the free end of the fourth vertical folding tube 23 through the fifth sliding seal ring, so that the fifth vertical folding tube 24 can vertically and sealingly slide within the fourth vertical folding tube 23. Two of the fifth vertical folding tubes 24 correspond one by one to the two fourth vertical folding tubes 23, so that the fifth vertical folding tube 24 can be folded within the fourth vertical folding tube 23. One end of the sixth vertical folding tube 25 is sleeved with a sixth sliding seal ring. The sixth vertical folding tube 25 is fitted into the tube at the free end of the fifth vertical folding tube 24 through the sixth sliding seal ring, so that the sixth vertical folding tube 25 can vertically and sealingly slide within the fifth vertical folding tube 24.The two sixth vertical folding tubes 25 correspond to the two fifth vertical folding tubes 24 one by one, enabling the sixth vertical folding tube 25 to be folded inside the fifth vertical folding tube 24. The other end of the sixth vertical folding tube 25 is closed. By shrinking and folding the second vertical folding tube 21, the third vertical folding tube 22, the fourth vertical folding tube 23, and the fifth vertical folding tube 24, the elongation rate and shrinkage rate of the vertical folding tube can be significantly increased. When the sand belt folding member is shrunk to the smallest size, it is convenient to be installed in the folding container, and at the same time, it can be fully unfolded to meet the requirement of conveying an ultra-long sand belt to the polishing member. While significantly improving the automation efficiency of sand belt replacement, the polishable area after one-time sand belt replacement can be significantly increased.

[0047] The vertical anti-twist member includes an anti-twist vertical fixed rod, an anti-twist vertical sliding rod, and an anti-twist vertical sliding tube. The anti-twist vertical fixed rod is arranged on the vertical folding tube, and the anti-twist vertical sliding rod and the anti-twist vertical sliding tube are both arranged on the anti-twist vertical fixed rod. The anti-twist vertical fixed rod includes a first anti-twist vertical fixed rod 26, a second anti-twist vertical fixed rod 27, a third anti-twist vertical fixed rod 28, a fourth anti-twist vertical fixed rod 29, a fifth anti-twist vertical fixed rod 30, and a sixth anti-twist vertical fixed rod 31. The first anti-twist vertical fixed rod 26 is fixedly arranged on the first vertical folding tube 20 along the radial direction; the second anti-twist vertical fixed rod 27 is fixedly arranged on the second vertical folding tube 21 along the radial direction, and the two second anti-twist vertical fixed rods 27 correspond to the two second vertical folding tubes 21 one by one; the third anti-twist vertical fixed rod 28 is fixedly arranged on the third vertical folding tube 22 along the radial direction, and the two third anti-twist vertical fixed rods 28 correspond to the two third vertical folding tubes 22 one by one; the fourth anti-twist vertical fixed rod 29 is fixedly arranged on the fourth vertical folding tube 23 along the radial direction, and the two fourth anti-twist vertical fixed rods 29 correspond to the two fourth vertical folding tubes 23 one by one; the fifth anti-twist vertical fixed rod 30 is fixedly arranged on the fifth vertical folding tube 24 along the radial direction, and the two fifth anti-twist vertical fixed rods 30 correspond to the two fifth vertical folding tubes 24 one by one. The sixth anti-twist vertical fixed rod 31 is fixedly arranged on the sixth vertical folding tube 25 along the radial direction, and the two sixth anti-twist vertical fixed rods 31 correspond to the two sixth vertical folding tubes 25 one by one.

[0048] The anti-twist vertical sliding rod is in the shape of a rectangular column. One end of the anti-twist vertical sliding rod is vertically and fixedly arranged on the first anti-twist vertical fixing rod 26, and the two anti-twist vertical sliding rods are symmetrically distributed on the first anti-twist vertical fixing rod 26. The anti-twist vertical sliding tube includes a first anti-twist vertical sliding tube 32, a second anti-twist vertical sliding tube 33, a third anti-twist vertical sliding tube 34, a fourth anti-twist vertical sliding tube 35, and a fifth anti-twist vertical sliding tube 36. The first anti-twist vertical sliding tube 32 is in the shape of a rectangular tube. The first anti-twist vertical sliding tube 32 is fixedly arranged on the second anti-twist vertical fixing rod 27, and one end of the first anti-twist vertical sliding tube 32 is sleeved on the other end of the anti-twist vertical sliding rod. The two first anti-twist vertical sliding tubes 32 correspond to the two anti-twist vertical sliding rods one by one. The second anti-twist vertical sliding tube 33 is in the shape of a rectangular tube. The second anti-twist vertical sliding tube 33 is fixedly arranged on the third anti-twist vertical fixing rod 28, and one end of the second anti-twist vertical sliding tube 33 is sleeved on the other end of the first anti-twist vertical sliding tube 32. The two second anti-twist vertical sliding tubes 33 correspond to the two first anti-twist vertical sliding tubes 32 one by one. The third anti-twist vertical sliding tube 34 is in the shape of a rectangular tube. The third anti-twist vertical sliding tube 34 is fixedly arranged on the fourth anti-twist vertical fixing rod 29, and one end of the third anti-twist vertical sliding tube 34 is sleeved on the other end of the second anti-twist vertical sliding tube 33. The two third anti-twist vertical sliding tubes 34 correspond to the two second anti-twist vertical sliding tubes 33 one by one. The fourth anti-twist vertical sliding tube 35 is in the shape of a rectangular tube. The fourth anti-twist vertical sliding tube 35 is fixedly arranged on the fifth anti-twist vertical fixing rod 30, and one end of the fourth anti-twist vertical sliding tube 35 is sleeved on the other end of the third anti-twist vertical sliding tube 34. The two fourth anti-twist vertical sliding tubes 35 correspond to the two third anti-twist vertical sliding tubes 34 one by one. The fifth anti-twist vertical sliding tube 36 is in the shape of a rectangular tube. The fifth anti-twist vertical sliding tube 36 is fixedly arranged on the sixth anti-twist vertical fixing rod 31, and one end of the fifth anti-twist vertical sliding tube 36 is sleeved on the other end of the fourth anti-twist vertical sliding tube 35. The two fifth anti-twist vertical sliding tubes 36 correspond to the two fourth anti-twist vertical sliding tubes 35 one by one. By the axial movement of the rectangular column in the rectangular tube, relative circumferential rotation is prevented during the compression folding and unfolding processes of the first vertical folding tube 20, the second vertical folding tube 21, the third vertical folding tube 22, the fourth vertical folding tube 23, the fifth vertical folding tube 24, and the sixth vertical folding tube 25.

[0049] The rolling buckling and folding member includes a rolling mounting base 37, a rolling tube 38, a wind power runner 39, a buckling fixed tube 40, a second return spring 41, a buckling claw 42 and a first magnetic coil 43. The rolling mounting base 37 is in the shape of a rectangular groove and is fixedly arranged at the other end of the sixth vertical folding tube 25. Both end faces of the rolling tube 38 are closed. The rolling tube 38 is horizontally penetrated through the two groove walls of the rolling mounting base 37 by connecting shafts on both end faces, so that the rolling tube 38 can circumferentially roll on the rolling mounting base 37 through the connecting shafts. The wind power runner 39 is arranged at the free end of the connecting shaft. A runner shell 44 is sleeved outside the wind power runner 39. A first high-pressure hose is connected through the runner shell 44. An automatic gate valve is arranged on the first high-pressure hose to control the dredging and cutoff of the first high-pressure hose. Further, an external ventilation hole is arranged on the runner shell 44. The free end of the first high-pressure hose communicates with the sixth vertical folding tube 25. When high-pressure gas is sprayed into the runner shell 44 through the first high-pressure hose, the wind power runner 39 will be pushed to rotate forward, and the high-pressure gas is discharged from the external ventilation hole. When the first high-pressure hose sucks air into the runner shell 44, the air in the external environment will enter through the external ventilation hole to push the wind power runner 39 to rotate backward. The rotating wind power runner 39 drives the rolling tube 38 to roll through the connecting shaft.

[0050] One end of the buckling and fixing tube 40 horizontally penetrates through one end surface of the rolling tube 38, and the two buckling and fixing tubes 40 respectively correspond to the two end surfaces of the rolling tube 38. The second return spring 41 is embedded in the other end tube of the buckling and fixing tube 40, and the two second return springs 41 respectively correspond to the two buckling and fixing tubes 40 one by one. The buckling claw 42 is L-shaped, the top end of the buckling claw 42 is embedded in one end tube of the buckling and fixing tube 40, and the buckling claw 42 can axially move in the buckling and fixing tube 40. The two buckling claws 42 respectively correspond to the two buckling and fixing tubes 40 one by one. The first magnetic coil 43 is fixedly embedded in one end tube of the buckling and fixing tube 40, and the first magnetic coil 43 is sleeved outside one end of the buckling claw 42. The two first magnetic coils 43 respectively correspond to the two buckling and fixing tubes 40 one by one. When a direct current is passed through the first magnetic coil 43 to generate a magnetic field, one end of the buckling claw 42 will be pulled to move towards one end of the buckling and fixing tube 40, and then the other end of the buckling claw 42 will be driven to move outside the rolling tube 38 to release the abrasive belt from the outer wall of the rolling tube 38. When the first magnetic coil 43 stops passing through the direct current, the buckling claw 42 will be pulled back to its original position by the second return spring 41, and then the abrasive belt will be buckled on the outer wall of the rolling tube 38 to prevent the abrasive belt from detaching from the rolling tube 38. There are two sets of the rolling buckling and folding members, and the two sets of rolling buckling and folding members are respectively arranged on the other ends of the two sixth vertical folding tubes 25 one by one. Further, the second return spring 41 is a tension spring.

[0051] There are two sets of the abrasive belt vertical folding members, and the two sets of abrasive belt vertical folding members respectively correspond to the two second horizontal folding tubes 11 one by one.

[0052] The folding and accommodating member includes a folding and accommodating tube 45 and an accommodating seat 46. The folding and accommodating tube 45 is in a rectangular tubular shape. One end of the folding and accommodating tube 45 is horizontally arranged on the side wall of the polishing and carrying member 2. The accommodating seat 46 includes an accommodating and fixing male seat and an accommodating and fixing female seat. The accommodating and fixing female seat cooperates with the accommodating and fixing male seat. The accommodating and fixing male seat is in a convex block shape, and the accommodating and fixing male seat is horizontally fixed on the side wall of the polishing and carrying member 2 inside the folding and accommodating tube 45. The accommodating and fixing female seat is in a concave block shape, and the accommodating and fixing female seat is fixedly arranged on the first horizontal folding tube 10, and the accommodating and fixing female seat and the transmission connecting member are symmetrically positioned. After folding, the abrasive belt horizontal folding member and the abrasive belt vertical folding member can be hung on the accommodating and fixing male seat through the accommodating and fixing female seat to temporarily store the folded abrasive belt in the folding and accommodating tube 45. There are multiple folding and accommodating members, and the multiple folding and accommodating members are installed at predetermined positions according to needs.

[0053] The process of the abrasive belt folding member winding the abrasive belt is as follows:

[0054] 1) Introduce high-pressure gas into the horizontal folding tube and the vertical folding tube through the transmission connecting piece. The high-pressure gas will enter the horizontal folding tube and the vertical folding tube, and then push the horizontal folding tube and the vertical folding tube to extend to the longest position;

[0055] 2) Put the ultra-long abrasive belt outside the four rolling tubes 38, stop passing direct current into the first magnetic coil 43, and the second return spring 41 will pull the buckling claw 42 to buckle the abrasive belt outside the rolling tube 38;

[0056] 3) Discharge the high-pressure gas in the horizontal folding tube and the vertical folding tube;

[0057] 4) Start the automatic gate valve to evacuate the runner housing 44 through the horizontal folding tube, the vertical folding tube and the first high-pressure hose, and then push the rolling tube 38 to rotate reversely. The reversely rotating rolling tube 38 winds the abrasive belt on the rolling tube 38 through the buckling claw 42 (by controlling the air inflow of the external ventilation hole and the air extraction volume into the horizontal folding tube, to control the negative pressure value of the horizontal folding tube and the vertical folding tube, and then fold the horizontal folding tube and the vertical folding tube);

[0058] 5) After folding the abrasive belt to the minimum state through the cooperation of the horizontal folding tube, the vertical folding tube and the rolling tube 38, temporarily store it in the folding storage tube 45 through the capacitance seat for the abrasive belt automatic replacement arm to grab, and automatically replace the abrasive belt on the grinding head polishing part.

[0059] The abrasive belt automatic replacement arm includes a folding mounting base, a first folding arm, a second folding arm, a third folding arm, and a gripping connector 60. The folding mounting base is arranged on the rotary vertical member 1. The first folding arm is arranged on the folding mounting base. The second folding arm is arranged on the first folding arm. The third folding arm is arranged on the second folding arm. The gripping connector 60 is arranged on the third folding arm. The folding mounting base includes a circumferential rotating tube 47, a first rotating gear, a first motor, and a first gear. The circumferential rotating tube 47 is sleeved on the vertical moving section, and the circumferential rotating tube 47 rotates circumferentially and is axially locked on the vertical moving section. The first rotating gear is sleeved on the vertical moving section and fixedly connected to one end of the circumferential rotating tube 47. The first motor is fixedly arranged on the vertical moving section. The first gear is fixedly arranged on the rotating shaft of the first motor, and the first gear meshes with the first rotating gear. So that the first motor can drive the first rotating gear to rotate through the first gear, and the rotating first rotating gear drives the circumferential rotating tube 47 to rotate circumferentially on the vertical moving section. Further, the first motor is a stepping motor.

[0060] The first folding arm includes a second motor, a first swing arm rotating shaft, and a first support rod 48. The second motor is fixedly arranged on the vertical moving section. One end of the first swing arm rotating shaft is arranged on the rotating shaft of the second motor. The other end of the first swing arm rotating shaft horizontally penetrates through a rotating shaft stabilizing block on the vertical moving section, so that the first swing arm rotating shaft can rotate circumferentially on the rotating shaft stabilizing block, and the rotating shaft stabilizing block can increase the radial bearing capacity of the first swing arm rotating shaft. The first support rod 48 is fixedly arranged on the first swing arm rotating shaft, so that the other end of the first support rod 48 swings as the first swing arm rotating shaft rotates. Further, the first support rod 48 is a support rod with an automatic telescopic function.

[0061] The second folding arm includes a third motor 49, a second swing arm rotating shaft 50, and a second support rod 51. The third motor 49 is fixedly connected to the other end of the first support rod 48 through a connecting block. One end of the second swing arm rotating shaft 50 is horizontally and fixedly arranged on the rotating shaft of the third motor 49. The other end of the second swing arm rotating shaft 50 is inserted into a rotating groove on the end face of the other end of the first support rod 48, so that the third motor 49 can drive the second swing arm rotating shaft 50 to rotate in the rotating groove, and the rotating groove can increase the radial bearing capacity of the second swing arm rotating shaft 50. One end of the second support rod 51 is fixedly connected to the second swing arm rotating shaft 50.

[0062] The third folding arm includes a fourth motor 52 and a third swing arm rotating shaft 53. The fourth motor 52 is fixedly arranged at the other end of the second support rod 51. One end of the third swing arm rotating shaft 53 horizontally penetrates through the other end of the second support rod 51 and is fixedly connected to the rotating shaft of the fourth motor 52. The gripping connecting member 60 includes a sliding tube 54, a second magnetic coil 55, a second sealed annular plate 56, a reducing pipe 57 and a locking tube 58. The sliding tube 54 is sleeved on the other end of the third swing arm rotating shaft 53. The second magnetic coil 55 is fixedly embedded in the sliding tube 54 and sleeved on the third swing arm rotating shaft 53. The second sealed annular plate 56 is fixedly embedded in the sliding tube 54. The inner circle of the second sealed annular plate 56 is a rectangular hole, so that the second sealed annular plate 56 is sleeved on a rectangular sliding groove 61 on the outer wall of the other end of the third swing arm rotating shaft 53 through its inner circle. The length of the rectangular sliding groove 61 is less than the length of the third swing arm rotating shaft 53, so that the sliding tube 54 is circumferentially locked and axially slid with the third swing arm rotating shaft 53 through the second sealed annular plate 56. When the sliding tube 54 slides to the other end of the third swing arm rotating shaft 53, the second sealed annular plate 56 will be closely attached and sealed to the other end of the third swing arm rotating shaft 53. The large end of the reducing pipe 57 is connected to one end of the sliding tube 54 in a penetrating manner. One end of the locking tube 58 is connected to the small end of the reducing pipe 57 in a penetrating manner. The locking tube 58 is used to be inserted into the connecting and fixing pipe 16 and then locked in the connecting and fixing pipe 16 by the locking steel balls 19. At the same time, the slider on the outer wall of the locking tube 58 cooperates with the chute on the inner wall of the connecting and fixing pipe 16, so that the locking tube 58 is circumferentially locked and axially slid with the connecting and fixing pipe 16.

[0063] When the axes of the third swing arm rotating shaft 53 and the sliding tube 54 coincide according to a predetermined program by the folding mounting base, the first folding arm and the second folding arm, when a positive direct current is passed through the second magnetic coil 55 to generate a magnetic field, the sliding tube 54 will be pushed to move to the right. The sliding tube 54 will drive the free end of the locking tube 58 to insert into the connecting and fixing tube 16. At the same time, the slider inserts into the chute. Due to the magnetic force between the second magnetic coil 55 and the locking sliding tube 18, the locking sliding tube 18 will be pulled to move to the left, and then the locking steel balls 19 will be squeezed inward through the reaming holes to lock the locking tube 58 in the connecting and fixing tube 16. At the same time, the locking tube 58 is hermetically connected to the first sealing annular plate 62, and the second sealing annular plate 56 is hermetically connected to the other end of the third swing arm rotating shaft 53, so as to realize the sealing connection between the locking tube 58 and the connecting and fixing tube 16, and the sealing connection between the sliding tube 54 and the other end of the third swing arm rotating shaft 53. The ventilation relay hole 59 at the other end of the third swing arm rotating shaft 53 is hermetically communicated with the sliding tube 54. Further, the ventilation relay hole 59 is connected in through connection with one end of a second high-pressure hose, and the other end of the second high-pressure hose is connected in through connection with an air inflation and deflation dual-purpose pump. The air inflation and deflation dual-purpose pump is used for inflating and deflating the sand belt horizontal folding member and the sand belt vertical folding member to control their unfolding and contraction.

[0064] Although the embodiments of the present invention have been disclosed as above, they are not limited to only the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those who are familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. An automatic conversion device for grading and polishing the board surface, characterized in that, Comprising: A gantry support member that provides support for the metal plate to be polished and the polishing equipment; A polishing member disposed on the gantry support member, which includes a rotary vertical member, a polishing carrier member, and an implementing polishing member. The rotary vertical member provides circumferential rotation and vertical movement on the gantry support member. The polishing carrier member provides support for the implementing polishing member on the rotary vertical member; A sand belt automatic replacement member disposed on the polishing member, which includes a sand belt folding member and a sand belt automatic replacement arm. Both the sand belt folding member and the sand belt automatic replacement arm are disposed on the polishing carrier member. The sand belt folding member is used to fold and place the extra-long sand belt. The sand belt automatic replacement arm automatically transfers the sand belt folding member with the extra-long sand belt to a predetermined position and automatically installs the extra-long sand belt onto the implementing polishing member to polish the metal plate; The horizontal rotary section of the rotary vertical member provides circumferential rotation on the gantry support member, and the vertical movement section of the rotary vertical member provides vertical movement on the gantry support member. The implementing polishing member includes a grinding head swing frame, a grinding head polishing member, and a grinding head power member. The grinding head swing frame is disposed on the vertical movement section. The grinding head polishing member includes a driving wheel, a tensioning frame, an automatic telescopic rod, and a driven wheel. The driving wheel is disposed on one end of the grinding head swing frame through a driving shaft provided thereon. One end of the tensioning frame is disposed on one end of the grinding head swing frame. The bottom end of the automatic telescopic rod is disposed on the other end of the tensioning frame. The driven wheel is disposed on the top end of the automatic telescopic rod. The grinding head power member is disposed on the other end of the grinding head swing frame and transmits power to the driving shaft; The sand belt folding member includes a sand belt horizontal folding member, a sand belt vertical folding member, and a folding accommodating member. The sand belt vertical folding member is disposed on the sand belt horizontal folding member. The folding accommodating member is disposed on the polishing carrier member. The sand belt horizontal folding member includes a horizontal folding tube, a horizontal anti-twist member, and a transmission connecting member. Both the horizontal anti-twist member and the transmission connecting member are disposed on the horizontal folding tube. The horizontal folding tube includes a first horizontal folding tube and a second horizontal folding tube. One end of the second horizontal folding tube is inserted into the tube of one end of the first horizontal folding tube, and a first sliding sealing ring is sleeved on one end of the second horizontal folding tube. Two of the second horizontal folding tubes are correspondingly disposed at both ends of the first horizontal folding tube.

2. The automatic conversion device for surface grading and polishing according to claim 1, characterized in that, The lateral anti-twist member includes an anti-twist lateral fixed rod, an anti-twist lateral sliding rod, and an anti-twist lateral sliding tube. The anti-twist lateral fixed rod is arranged on the lateral folding tube. The anti-twist lateral sliding rod and the anti-twist lateral sliding tube are both arranged on the anti-twist lateral fixed rod. The anti-twist lateral fixed rod includes a first anti-twist lateral fixed rod and a second anti-twist lateral fixed rod. The first anti-twist lateral fixed rod is arranged radially within the first lateral folding tube, and the second anti-twist lateral fixed rod is arranged radially within the second lateral folding tube. A plurality of the second anti-twist lateral fixed rods correspond one by one to a plurality of the second lateral folding tubes. The anti-twist lateral sliding rod is in the shape of a rectangular column. One end of the anti-twist lateral sliding rod is arranged on the first anti-twist lateral fixed rod, and a plurality of the anti-twist lateral sliding rods are symmetrically distributed on the first anti-twist lateral fixed rod. The anti-twist lateral sliding tube is in the shape of a rectangular tube, and the anti-twist lateral sliding tube is arranged on the second anti-twist lateral fixed rod, and the anti-twist lateral sliding tube is fitted and sleeved on the free end of the anti-twist lateral sliding rod.

3. The automatic conversion device for hierarchical polishing of the plate surface according to claim 2, characterized in that, The transmission connecting member includes a connecting fixed tube, a first return spring, a locking sliding tube, and a locking steel ball. One end of the connecting fixed tube is arranged on the first lateral folding tube. The first return spring is sleeved on the outer wall of one end of the connecting fixed tube, and one end of the first return spring is fixedly connected to the outer wall of the connecting fixed tube. The locking sliding tube is sleeved on the connecting fixed tube. One end of the locking sliding tube is connected to the other end of the first return spring. The locking steel ball is embedded in a locking hole on the wall of the connecting fixed tube. A plurality of the locking holes are evenly distributed around the circumference of the connecting fixed tube, and a plurality of the locking steel balls correspond one by one to a plurality of the locking holes. A first sealing annular plate is arranged within the connecting fixed tube.

4. The automatic conversion device for surface grading and polishing according to claim 3, characterized in that The belt vertical folding member includes a vertical folding tube, a vertical anti-twist member, and a rolling snap folding member. The vertical folding tube is disposed on the horizontal folding tube. The vertical anti-twist member and the rolling snap folding member are both disposed on the vertical folding tube. The vertical folding tube includes a first vertical folding tube, a second vertical folding tube, a third vertical folding tube, a fourth vertical folding tube, a fifth vertical folding tube, and a sixth vertical folding tube. The middle end of the first vertical folding tube is disposed on the free end of the second horizontal folding tube, and the first vertical folding tube communicates with the second horizontal folding tube. One end of the second vertical folding tube is fitted into the tube of one end of the first vertical folding tube through a second sliding seal ring provided thereon. Two of the second vertical folding tubes are correspondingly fitted into the tubes of both ends of the first vertical folding tube. One end of the third vertical folding tube is fitted into the free end tube of the second vertical folding tube through a third sliding seal ring provided thereon. Two of the third vertical folding tubes correspond one by one to two of the second vertical folding tubes. One end of the fourth vertical folding tube is fitted into the free end tube of the third vertical folding tube through a fourth sliding seal ring provided thereon. Two of the fourth vertical folding tubes correspond one by one to two of the third vertical folding tubes. One end of the fifth vertical folding tube is fitted into the free end tube of the fourth vertical folding tube through a fifth sliding seal ring provided thereon. Two of the fifth vertical folding tubes correspond one by one to two of the fourth vertical folding tubes. One end of the sixth vertical folding tube is fitted into the free end tube of the fifth vertical folding tube through a sixth sliding seal ring provided thereon. Two of the sixth vertical folding tubes correspond one by one to two of the fifth vertical folding tubes. The vertical anti-torsion member includes an anti-torsion vertical fixed rod, an anti-torsion vertical sliding rod, and an anti-torsion vertical sliding tube. The anti-torsion vertical fixed rod is provided on the vertical folding tube, and the anti-torsion vertical sliding rod and the anti-torsion vertical sliding tube are both provided on the anti-torsion vertical fixed rod. The anti-torsion vertical fixed rod includes a first anti-torsion vertical fixed rod, a second anti-torsion vertical fixed rod, a third anti-torsion vertical fixed rod, a fourth anti-torsion vertical fixed rod, a fifth anti-torsion vertical fixed rod, and a sixth anti-torsion vertical fixed rod. The first anti-torsion vertical fixed rod is arranged radially on the first vertical folding tube. The second anti-torsion vertical fixed rod is arranged radially on the second vertical folding tube, and the two second anti-torsion vertical fixed rods correspond to the two second vertical folding tubes one by one. The third anti-torsion vertical fixed rod is arranged radially on the third vertical folding tube, and the two third anti-torsion vertical fixed rods correspond to the two third vertical folding tubes one by one. The fourth anti-torsion vertical fixed rod is arranged radially on the fourth vertical folding tube, and the two fourth anti-torsion vertical fixed rods correspond to the two fourth vertical folding tubes one by one. The fifth anti-torsion vertical fixed rod is arranged radially on the fifth vertical folding tube, and the two fifth anti-torsion vertical fixed rods correspond to the two fifth vertical folding tubes one by one. The sixth anti-torsion vertical fixed rod is arranged radially on the sixth vertical folding tube, and the two sixth anti-torsion vertical fixed rods correspond to the two sixth vertical folding tubes one by one. The anti-torsion vertical sliding rod is in the shape of a rectangular column. One end of the anti-torsion vertical sliding rod is provided on the first anti-torsion vertical fixed rod, and the two anti-torsion vertical sliding rods are symmetrically distributed on the first anti-torsion vertical fixed rod. The anti-torsion vertical sliding tube includes a first anti-torsion vertical sliding tube, a second anti-torsion vertical sliding tube, a third anti-torsion vertical sliding tube, a fourth anti-torsion vertical sliding tube, and a fifth anti-torsion vertical sliding tube. The first anti-torsion vertical sliding tube is in the shape of a rectangular tube and is provided on the second anti-torsion vertical fixed rod. One end of the first anti-torsion vertical sliding tube is sleeved on the other end of the anti-torsion vertical sliding rod. The second anti-torsion vertical sliding tube is provided on the third anti-torsion vertical fixed rod, and one end of the second anti-torsion vertical sliding tube is sleeved on the other end of the first anti-torsion vertical sliding tube. The third anti-torsion vertical sliding tube is provided on the fourth anti-torsion vertical fixed rod, and one end of the third anti-torsion vertical sliding tube is sleeved on the other end of the second anti-torsion vertical sliding tube. The fourth anti-torsion vertical sliding tube is provided on the fifth anti-torsion vertical fixed rod, and one end of the fourth anti-torsion vertical sliding tube is sleeved on the other end of the third anti-torsion vertical sliding tube. The fifth anti-torsion vertical sliding tube is provided on the sixth anti-torsion vertical fixed rod, and one end of the fifth anti-torsion vertical sliding tube is sleeved on the other end of the fourth anti-torsion vertical sliding tube.

5. The automatic conversion device for hierarchical polishing of the plate surface according to claim 4, characterized in that, The rolling buckle folding member includes a rolling mounting base, a rolling tube, a wind power runner, a buckling fixed tube, a second return spring, a buckling claw, and a first magnetic coil. The rolling mounting base is arranged at the other end of the sixth vertical folding tube. The rolling tube is arranged on the two groove walls of the rolling mounting base through connecting shafts on both end faces. The wind power runner is arranged at the free end of the connecting shaft. A runner shell is sleeved outside the wind power runner. A first high-pressure hose is connected through the runner shell. An automatic gate valve is arranged on the first high-pressure hose. An external ventilation hole is arranged on the runner shell. The free end of the first high-pressure hose communicates with the sixth vertical folding tube.

6. The automatic conversion device for hierarchical polishing of the board surface according to claim 5, characterized in that, One end of the buckling fixed tube penetrates through one end face of the rolling tube. The second return spring is embedded in the other end tube of the buckling fixed tube. The buckling claw is L-shaped. The top end of the buckling claw is embedded in the one end tube of the buckling fixed tube. The first magnetic coil is embedded in the one end tube of the buckling fixed tube, and the first magnetic coil is sleeved outside one end of the buckling claw. Two groups of the rolling buckle folding members are arranged corresponding to each other at the other ends of the two sixth vertical folding tubes. Two sets of the abrasive belt vertical folding members correspond to the two second horizontal folding tubes one by one. The folding accommodation member includes a folding accommodation tube and an accommodation seat. One end of the folding accommodation tube is arranged on the side wall of the polishing carrier. The accommodation seat includes an accommodation fixed male seat and an accommodation fixed female seat. The accommodation fixed male seat is fixed on the side wall of the polishing carrier inside the folding accommodation tube. The accommodation fixed female seat is arranged on the first horizontal folding tube. A plurality of the folding accommodation members are installed at a predetermined position according to needs.

7. The automatic conversion device for hierarchical polishing of the board surface according to claim 6, characterized in that The abrasive belt automatic replacement arm includes a folding mounting base, a first folding arm, a second folding arm, a third folding arm, and a gripping connector. The folding mounting base is arranged on the rotary vertical member. The first folding arm is arranged on the folding mounting base. The second folding arm is arranged on the first folding arm. The third folding arm is arranged on the second folding arm. The gripping connector is arranged on the third folding arm. The folding mounting base includes a circumferential rotation tube, a first rotary gear, a first motor, and a first gear. The circumferential rotation tube is sleeved on the vertical moving section, and the circumferential rotation tube rotates circumferentially and is axially locked on the vertical moving section. The first rotary gear is sleeved on the vertical moving section and then connected to one end of the circumferential rotation tube. The first motor is arranged on the vertical moving section. The first gear is on the rotating shaft of the first motor and meshes with the first rotary gear. The first folding arm includes a second motor, a first swing arm rotating shaft, and a first support rod. The second motor is arranged on the vertical moving section. One end of the first swing arm rotating shaft is arranged on the rotating shaft of the second motor. The first support rod is arranged on the first swing arm rotating shaft. The second folding arm includes a third motor, a second swing arm rotating shaft, and a second support rod. The third motor is fixedly connected to the other end of the first support rod through a connecting block. One end of the second swing arm rotating shaft is arranged on the rotating shaft of the third motor. The other end of the second swing arm rotating shaft is inserted into a rotating groove on the end face of the other end of the first support rod. One end of the second support rod is connected to the second swing arm rotating shaft.

8. The automatic conversion device for hierarchical polishing of the board surface according to claim 7, characterized in that, The third folding arm includes a fourth motor and a third swing arm rotating shaft. The fourth motor is arranged on the other end of the second support rod. One end of the third swing arm rotating shaft is connected to the rotating shaft of the fourth motor. The gripping connector includes a sliding tube, a second magnetic coil, a second sealing annular plate, a reducing pipe, and a locking pipe. The sliding tube is sleeved on the other end of the third swing arm rotating shaft. The second magnetic coil is embedded in the sliding tube and sleeved on the third swing arm rotating shaft. The second sealing annular plate is embedded in the sliding tube. The inner circle of the second sealing annular plate is in the shape of a rectangular hole. The second sealing annular plate is fitted and sleeved on a rectangular sliding groove on the outer wall of the other end of the third swing arm rotating shaft through its inner circle. The large end of the reducing pipe is connected to one end of the sliding tube in a through manner. One end of the locking pipe is connected to the small end of the reducing pipe in a through manner.

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