Grinding wheel forming machine screen placing device and method

Abstract

The application provides a screen placing device and method for a grinding wheel forming machine. The screen placing device comprises a screen sticking mechanism, a screen removing mechanism and a screen preventing mechanism. The screen removing mechanism comprises a screen removing driving element and a screen removing plate. The screen removing driving element is installed on the screen sticking mechanism. The screen removing plate is in transmission connection with the screen removing driving element and is located below the screen sticking mechanism. The screen preventing mechanism comprises a connecting seat, a screen preventing driving element, a receiving cylinder and an elastic supporting element. A center hole is arranged on the screen removing plate corresponding to the shaft hole of the screen. The connecting seat is connected between the screen removing driving element and the screen removing plate and is located corresponding to the center hole. The screen preventing driving element is fixed in the connecting seat. The receiving cylinder is fixed at the bottom end of the screen preventing driving element and is located above the screen removing plate. The elastic supporting element is arranged in the receiving cylinder and is in transmission connection with the screen preventing driving element so as to drive the elastic supporting element to be hidden in the receiving cylinder or to be extended out of the receiving cylinder. The elastic supporting element is made of an elastic material and is a deformable tray structure. The screen placing device ensures that the screen will not fall off during the carrying process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding wheel manufacturing, in particular to a grinding wheel forming machine net placing device and method. BACKGROUND

[0002] Grinding wheel piece is the most important grinding tool in grinding process; it is made by pressing, drying and sintering, and the sintering mainly uses a tunnel kiln. In order to make the strength of the grinding wheel piece meet the requirements, a skeleton, i.e. a mesh, needs to be added in the grinding wheel piece during the manufacturing process. The manufacturing process of the grinding wheel piece includes adding at least one layer of forming powder, adding at least one mesh, pre-pressing the above materials, and then sintering. The mesh adding process has always been a difficult step. Because the mesh has a plurality of through holes, it is difficult to realize the adsorption and transfer of the mesh. In the prior art, the mesh is usually added by adhesion, but the mesh may fall off during the movement of the adhesion mesh. SUMMARY

[0003] In view of the above, the present application provides a grinding wheel forming machine net placing device and method to solve the problem of mesh falling off.

[0004] The technical scheme of the present application is as follows:

[0005] The present application provides a grinding wheel forming machine net placing device, which comprises a mesh sticking mechanism for sticking the mesh, a mesh stripping mechanism, and a mesh anti-falling mechanism.

[0006] The mesh stripping mechanism comprises a mesh stripping driving member and a mesh stripping plate. The mesh stripping driving member is installed on the mesh sticking mechanism. The mesh stripping plate is in transmission connection with the mesh stripping driving member and is located below the mesh sticking mechanism. The mesh stripping plate is driven to rise and fall by the mesh stripping driving member to peel off the mesh adhered to the mesh sticking mechanism.

[0007] The mesh anti-falling mechanism is arranged between the mesh stripping driving member and the mesh stripping plate. The mesh anti-falling mechanism comprises a connecting seat, a mesh anti-falling driving member, a receiving cylinder, and an elastic supporting member. A central hole is arranged at the shaft hole of the mesh on the mesh stripping plate. The connecting seat is connected between the mesh stripping driving member and the mesh stripping plate and corresponds to the position of the central hole.

[0008] The mesh anti-falling driving member is fixed in the connecting seat. The receiving cylinder is fixed at the bottom end of the mesh anti-falling driving member and is located above the mesh stripping plate. The elastic supporting member is arranged in the receiving cylinder and is in transmission connection with the mesh anti-falling driving member, so as to drive the elastic supporting member to be hidden in the receiving cylinder or to be stretched out of the receiving cylinder.

[0009] The elastic supporting member is made of an elastic material and has a deformable tray structure, so as to pass through the shaft hole of the mesh and stretch out of the receiving cylinder to support the mesh, or shrink in the receiving cylinder to make the mesh fall off.

[0010] Further, the sticky net mechanism comprises a fixed seat, a film reel and a winding reel, the film reel and the winding reel are rotatably installed on the fixed seat, the fixed seat is provided with a rubber pressing block, and guide wheels are arranged on both sides of the rubber pressing block on the fixed seat to guide the rubber belt on the film reel to pass through the lower surface of the rubber pressing block and wind around the winding reel.

[0011] Further, the sticky net mechanism comprises a gear, a one-way bearing, a rack and a winding telescopic driving piece, the gear is installed on the shaft of the winding reel through the one-way bearing to enable the shaft of the winding reel to rotate in one direction, the rack is installed in meshing connection with the gear, and the winding telescopic driving piece is installed on the fixed seat and in transmission connection with the rack.

[0012] Further, the film reel is provided with two film reels which are coaxially connected, and the winding reel is provided with two winding reels which are coaxially connected.

[0013] Further, the two coaxially connected film reels are symmetrically arranged in two groups, and the two coaxially connected winding reels are symmetrically arranged in two groups.

[0014] Further, the fixed seat comprises side plates, a bottom plate and a top plate, the two side plates are arranged in parallel, the bottom plate is fixed between the bottom edges of the two side plates, the top plate is fixed between the top edges of the two side plates, the net removing driving piece is fixed between the bottom plate and the top plate, and the net removing plate is arranged below the bottom plate.

[0015] Further, the two coaxially arranged film reels are respectively located outside the two side plates, and the two coaxially arranged winding reels are respectively located outside the two side plates.

[0016] Further, the moving mechanism for driving the overall structure of the sticky net mechanism, the net removing mechanism and the anti-removing mechanism to lift and translate is further provided, the moving mechanism comprises a portal frame, a sliding rail, a sliding block, a transmission belt, a transmission wheel, a transmission motor and a lifting driving piece, the sliding rail is horizontally fixed on the portal frame, the sliding block is slidingly arranged on the sliding rail, the two transmission wheels are rotatably arranged on the portal frame and located at the two ends of the sliding rail, the transmission belt is wound around the two transmission wheels and connected with the sliding block, the transmission motor is fixed on the portal frame and in transmission connection with the transmission wheel, and the lifting driving piece is installed at the bottom of the sliding block, and the lifting end of the lifting driving piece is connected with the fixed seat.

[0017] Further, the top net mechanism is further provided, the top net mechanism comprises a fixed part, a central shaft, a top reel, a top lifting cylinder and a top lifting frame, the central shaft is vertically arranged on the fixed part, the top reel is slidingly sleeved on the central shaft to stack the net pieces, the top lifting cylinder is fixed below the fixed part, and the telescopic rod of the top lifting cylinder is connected with the top reel through the top lifting frame to drive the top reel to slide along the central shaft.

[0018] The application also provides a method for the grid placing device of the above-mentioned grinding wheel forming machine. When the grid sticking mechanism is lowered to stick the grid, the receiving cylinder is above the grid removing plate, and the elastic supporting member is retracted into the receiving cylinder; when the grid sticking mechanism is raised to stick the grid, the anti-removing driving member drives the deformable tray structure to be lowered along the central hole and extended out of the receiving cylinder, so that the tray structure is elastically expanded to support the stuck grid; when the grid sticking mechanism is transferred to be directly above the grinding wheel forming mold, the anti-removing driving member drives the tray structure to be raised and retracted into the receiving cylinder, and the grid removing driving member drives the grid removing plate to be pressed on the grid, so that the grid is removed into the grinding wheel forming mold.

[0019] The application has the following beneficial effects:

[0020] Compared with the prior art, the grid placing device of the grinding wheel forming machine is provided with the grid sticking mechanism, the grid removing mechanism and the anti-removing mechanism. The anti-removing mechanism is arranged between the grid removing driving member and the grid removing plate. The anti-removing mechanism is provided with the connecting seat, the anti-removing driving member, the receiving cylinder and the elastic supporting member. The elastic supporting member is made of elastic material and has a deformable tray structure. When the grid sticking mechanism is lowered to stick the grid, the receiving cylinder is above the grid removing plate, and the elastic supporting member is retracted into the receiving cylinder. When the grid sticking mechanism is raised to stick the grid, the anti-removing driving member drives the deformable tray structure to be lowered along the central hole and extended out of the receiving cylinder, so that the tray structure is elastically expanded to support the stuck grid. During the movement of the grid, the lower surface of the grid is supported by the tray structure, and the upper surface of the grid is stuck by the grid sticking mechanism. Even if the grid is separated from the grid sticking mechanism, the grid will not fall off due to the support of the tray structure. When the grid sticking mechanism is transferred to be directly above the grinding wheel forming mold, the anti-removing driving member drives the tray structure to be raised and retracted into the receiving cylinder, and the grid removing driving member drives the grid removing plate to be pressed on the grid, so that the grid is removed into the grinding wheel forming mold. In this way, it is ensured that the grid will not fall off during the movement.

[0021] The preferred embodiments of the application and the beneficial effects thereof will be further described in detail in combination with the specific embodiments. DETAILED DESCRIPTION

[0022] The accompanying drawings are included to provide a further understanding of the application and constitute a part of the specification, which together with the specific embodiments below, serve to explain the application. However, the drawings should not be construed as limiting the application. In the drawings,

[0023] Figure 1 It is a first perspective assembly view of the grid placing device of the grinding wheel forming machine.

[0024] Figure 2 It is a top view of the grid placing device of the grinding wheel forming machine.

[0025] Figure 3 It is a second perspective assembly view of the grid placing device of the grinding wheel forming machine.

[0026] Figure 4 is a sectional view of the screen releasing device of the grinding wheel forming machine of the present application;

[0027] Figure 5 is a structural view of the screen releasing device of the grinding wheel forming machine of the present application provided with a moving mechanism and a screen lifting mechanism;

[0028] Figure 6 is a front view of the screen releasing device of the grinding wheel forming machine of the present application provided with a moving mechanism and a screen lifting mechanism.

[0029] Explanation of reference numerals: screen sticking mechanism 1, screen releasing mechanism 2, anti-release mechanism 3, screen releasing driving member 21, screen releasing plate 22, connecting seat 31, anti-release driving member 32, storage cylinder 33, elastic supporting member 34, center hole 20, fixing seat 11, film spool 12, winding spool 13, gear 14, one-way bearing 15, rack 16, winding telescopic driving member 17, glue pressing block 18, guide wheel 19, side plate 111, bottom plate 112, top plate 113, moving mechanism 4, gantry 41, slide rail 42, slide block 43, transmission belt 44, transmission wheel 45, transmission motor 46, lifting driving member 47, screen lifting mechanism 5, fixed part 51, center shaft 52, top plate 53, jacking cylinder 54, jacking frame 55. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0031] Please refer to Figures 1 to 4The present application provides a mesh releasing device of a grinding wheel forming machine, which comprises a mesh sticking mechanism 1, a mesh releasing mechanism 2 and a mesh preventing mechanism 3. The mesh releasing mechanism 2 comprises a mesh releasing driving member 21 and a mesh releasing plate 22. The mesh releasing driving member 21 is installed on the mesh sticking mechanism 1, and the mesh releasing plate 22 is in transmission connection with the mesh releasing driving member 21 and is located below the mesh sticking mechanism 1, so as to strip the mesh adhered to the mesh sticking mechanism 1 by driving the mesh releasing plate 22 to ascend and descend through the mesh releasing driving member 21. The mesh preventing mechanism 3 is arranged between the mesh releasing driving member 21 and the mesh releasing plate 22. The mesh preventing mechanism 3 comprises a connecting seat 31, a mesh preventing driving member 32, a receiving cylinder 33 and an elastic supporting member 34. A center hole 20 is arranged at the shaft hole of the mesh corresponding to the mesh releasing plate 22, and the connecting seat 31 is connected between the mesh releasing driving member 21 and the mesh releasing plate 22 and corresponds to the position of the center hole 20. The mesh preventing driving member 32 is fixed in the connecting seat 31, the receiving cylinder 33 is fixed at the bottom end of the mesh preventing driving member 32 and is located above the mesh releasing plate 22. The elastic supporting member 34 is arranged in the receiving cylinder 33 and is in transmission connection with the mesh preventing driving member 32, so as to drive the elastic supporting member 34 to ascend and descend in the receiving cylinder 33 or to extend out of the receiving cylinder 33. The elastic supporting member 34 is made of elastic material and has a deformable tray structure, so as to pass through the shaft hole of the mesh and extend out of the receiving cylinder 33 to support the mesh or to shrink in the receiving cylinder 33 to make the mesh fall off.

[0032] The mesh releasing device of the grinding wheel forming machine is matched by the mesh sticking mechanism 1, the mesh releasing mechanism 2 and the mesh preventing mechanism 3. The mesh preventing mechanism 3 is arranged between the mesh releasing driving member 21 and the mesh releasing plate 22. The mesh preventing mechanism 3 is matched by the connecting seat 31, the mesh preventing driving member 32, the receiving cylinder 33 and the elastic supporting member 34. The elastic supporting member 34 is made of elastic material and has a deformable tray structure. When the mesh sticking mechanism 1 descends to stick the mesh, the receiving cylinder 33 is above the mesh releasing plate 22, and the elastic supporting member 34 shrinks in the receiving cylinder 33. When the mesh sticking mechanism 1 ascends to stick the mesh, the mesh preventing driving member 32 drives the deformable tray structure to descend along the center hole 20 and extend out of the receiving cylinder 33, so that the tray structure is elastically expanded to support the stuck mesh. In the process of moving the mesh, the lower surface of the mesh is supported by the tray structure, and the upper surface of the mesh is adhered by the mesh sticking mechanism 1. Even if the mesh is separated from the mesh sticking mechanism 1, the mesh will not fall off due to the support of the tray structure. When the mesh sticking mechanism 1 transfers the mesh to the upper side of the grinding wheel forming mold, the mesh preventing driving member 32 drives the tray structure to ascend and shrink in the receiving cylinder 33, and the mesh releasing driving member 21 drives the mesh releasing plate 22 to press down on the mesh, so that the mesh falls off into the grinding wheel forming mold. In this way, it is ensured that the mesh will not fall off during the carrying process.

[0033] The sticking net mechanism 1 comprises a fixed base 11, a film reel 12, a winding reel 13, a gear 14, a one-way bearing 15, a rack 16 and a winding telescopic driving element 17. The film reel 12 and the winding reel 13 are rotatably installed on the fixed base 11, the gear 14 is installed on the shaft of the winding reel 13 through the one-way bearing 15, so that the shaft of the winding reel 13 rotates in one direction. The fixed base 11 is provided with a pressing block 18, and the fixed base 11 is provided with a guide wheel 19 on both sides of the pressing block 18 to guide the adhesive tape on the film reel 12 to pass through the lower surface of the pressing block 18 and wind around the winding reel 13. The rack 16 is installed in meshing with the gear 14, the winding telescopic driving element 17 is installed on the fixed base 11 and is in driving connection with the rack 16 to drive the rack 16 to move back and forth, thereby driving the gear 14 to rotate in opposite directions, the gear 14 drives the shaft of the winding reel 13 to rotate in one direction intermittently through the one-way bearing 15, thereby driving the winding reel 13 to rotate intermittently. For example, after three to five pieces of net film are stuck, the winding telescopic driving element 17 drives the rack 16 to move once, so that the adhesive tape on the film reel 12 is pulled out, and at the same time, the winding reel 13 winds the used adhesive tape. Compared with the prior art of recycling adhesive tape by using a motor, the problem of high cost exists, and in the present application, the winding telescopic driving element 17 can be driven by a pneumatic cylinder, the reciprocating motion of the rack 16 is converted into the one-way rotation of the winding reel 13 through the one-way bearing 15, thereby reducing the cost. Preferably, the film reel 12 is provided with two coaxial connections, and the winding reel 13 is provided with two coaxial connections. The two coaxial film reels 12 are symmetrically arranged in two groups, and the two coaxial winding reels 13 are symmetrically arranged in two groups, so that the stability of sticking can be improved.

[0034] The fixed base 11 comprises side plates 111, a bottom plate 112 and a top plate 113. The two side plates 111 are arranged in parallel, the bottom plate 112 is fixed between the bottom edges of the two side plates 111, and the top plate 113 is fixed between the top edges of the two side plates 111. The net removing driving element 21 is fixed between the bottom plate 112 and the top plate 113, and the net removing plate 22 is arranged below the bottom plate 112. The two coaxial film reels 12 are respectively located outside the two side plates 111, and the two coaxial winding reels 13 are respectively located outside the two side plates 111. In this way, the structure is simple, firm and convenient to install.

[0035] Please refer to Figure 5 and Figure 6The sand wheel forming machine net releasing device also comprises a moving mechanism 4 for lifting and translating the whole structure formed by the net sticking mechanism 1, the net releasing mechanism 2 and the anti-release mechanism 3. The moving mechanism 4 comprises a portal frame 41, a slide rail 42, a slide block 43, a transmission belt 44, a transmission wheel 45, a transmission motor 46 and a lifting driving part 47. The slide rail 42 is horizontally fixed on the portal frame 41, the slide block 43 is slidingly arranged on the slide rail 42, the two transmission wheels 45 are rotatably arranged on the portal frame 41 and located at the two ends of the slide rail 42, the transmission belt 44 is arranged around the two transmission wheels 45 and connected with the slide block 43, the transmission motor 46 is fixed on the portal frame 41 and transmissionally connected with the transmission wheel 45. The lifting driving part 47 is installed at the bottom of the slide block 43, and the lifting end of the lifting driving part 47 is connected with the fixed seat 11. The lifting driving part 47 is preferably a pneumatic cylinder.

[0036] The sand wheel forming machine net releasing device also comprises a net lifting mechanism 5, which comprises a fixed part 51, a central shaft 52, a lifting disc 53, a lifting cylinder 54 and a lifting frame 55. The central shaft 52 is vertically arranged on the fixed part 51, the lifting disc 53 is slidingly arranged on the central shaft 52 for stacking the net pieces. The lifting cylinder 54 is fixed below the fixed part 51, and the lifting rod of the lifting cylinder 54 is connected with the lifting disc 53 through the lifting frame 55 to drive the lifting disc 53 to slide along the central shaft 52. The lifting disc 53 is driven to rise by the lifting cylinder 54, and the net pieces on the lifting disc 53 are lifted, at the same time, the net sticking mechanism 1 is driven to descend by the lifting driving part 47, and the net pieces are tightly adhered to the lower surface of the net sticking mechanism 1 by the lifting disc 53.

[0037] The sand wheel forming machine net releasing device also comprises a net lifting mechanism 5, which comprises a fixed part 51, a central shaft 52, a lifting disc 53, a lifting cylinder 54 and a lifting frame 55. The central shaft 52 is vertically arranged on the fixed part 51, the lifting disc 53 is slidingly arranged on the central shaft 52 for stacking the net pieces. The lifting cylinder 54 is fixed below the fixed part 51, and the lifting rod of the lifting cylinder 54 is connected with the lifting disc 53 through the lifting frame 55 to drive the lifting disc 53 to slide along the central shaft 52. The lifting disc 53 is driven to rise by the lifting cylinder 54, and the net pieces on the lifting disc 53 are lifted, at the same time, the net sticking mechanism 1 is driven to descend by the lifting driving part 47, and the net pieces are tightly adhered to the lower surface of the net sticking mechanism 1 by the lifting disc 53.

[0038] When the net sticking mechanism 1 is lowered to stick the net pieces, the receiving cylinder 33 is above the net releasing plate 22, and the elastic supporting part 34 is retracted into the receiving cylinder 33; when the net sticking mechanism 1 is lifted to stick the net pieces, the anti-release driving part 32 drives the deformable tray structure to descend and extend out of the receiving cylinder 33 along the central hole 20, so that the tray structure is elastically expanded to support the stuck net pieces; when the net sticking mechanism 1 is transferred to the position directly above the sand wheel forming mold, the anti-release driving part 32 drives the tray structure to rise and retract into the receiving cylinder 33, and the net releasing driving part 21 drives the net releasing plate 22 to press down on the net pieces, so that the net pieces are released into the sand wheel forming mold. In this way, it is ensured that the net pieces will not fall off during the carrying process.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying importance; the words "bottom" and "top", "inner" and "outer" respectively refer to the direction towards or away from a particular component geometry.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "communication", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly communicated, or it can be indirectly communicated through an intermediate medium, it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0041] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A screen placing device for a grinding wheel forming machine, characterized in that, The adhesive net mechanism (1), the net stripping mechanism (2) and the anti-stripping mechanism (3) are arranged on the adhesive net mechanism (1). The net stripping mechanism (2) comprises a net stripping driving member (21) and a net stripping plate (22), the net stripping driving member (21) is installed on the adhesive net mechanism (1), the net stripping plate (22) is in transmission connection with the net stripping driving member (21) and is located below the adhesive net mechanism (1), so that the net stripping plate (22) is driven to ascend and descend by the net stripping driving member (21) to strip the net piece adhered to the adhesive net mechanism (1). The anti-stripping mechanism (3) is arranged between the net stripping driving member (21) and the net stripping plate (22), the anti-stripping mechanism (3) comprises a connecting seat (31), an anti-stripping driving member (32), a receiving cylinder (33) and an elastic supporting member (34), the net stripping plate (22) is provided with a central hole (20) corresponding to the shaft hole of the net piece, the connecting seat (31) is connected between the net stripping driving member (21) and the net stripping plate (22) and is located at a position corresponding to the central hole (20). The anti-stripping driving member (32) is fixed in the connecting seat (31), the receiving cylinder (33) is fixed at the bottom end of the anti-stripping driving member (32) and is located above the net stripping plate (22), the elastic supporting member (34) is arranged in the receiving cylinder (33) and is in transmission connection with the anti-stripping driving member (32), so that the elastic supporting member (34) is driven to be hidden in the receiving cylinder (33) or to be extended out of the receiving cylinder (33). The elastic supporting member (34) is made of an elastic material and has a deformable tray structure, so that the elastic supporting member (34) is extended out of the receiving cylinder (33) through the shaft hole of the net piece to support the net piece or is retracted into the receiving cylinder (33) to make the net piece fall off.

2. The sand wheel forming machine screen device according to claim 1, wherein, The adhesive net mechanism (1) comprises a fixed seat (11), a film reel (12) and a winding reel (13), the film reel (12) and the winding reel (13) are rotatably installed on the fixed seat (11), the fixed seat (11) is provided with a rubber pressing block (18), and the fixed seat (11) is provided with a guide wheel (19) on both sides of the rubber pressing block (18), so that the adhesive tape on the film reel (12) passes through the lower surface of the rubber pressing block (18) and is wound on the winding reel (13).

3. The sand wheel forming machine screen device of claim 2, wherein, The adhesive net mechanism (1) comprises a gear (14), a one-way bearing (15), a rack (16) and a winding telescopic driving member (17), the gear (14) is installed on the shaft of the winding reel (13) through the one-way bearing (15), so that the shaft of the winding reel (13) rotates in one direction, the rack (16) is in meshing connection with the gear (14), and the winding telescopic driving member (17) is installed on the fixed seat (11) and is in transmission connection with the rack (16).

4. The sand wheel forming machine screen device of claim 3, wherein, The film reel (12) is provided with two coaxial film reels (12), and the winding reel (13) is provided with two coaxial winding reels (13).

5. The sand wheel forming machine screen device of claim 4, wherein, The two coaxial film reels (12) are symmetrically arranged in two groups, and the two coaxial winding reels (13) are symmetrically arranged in two groups.

6. The screen placing device of claim 4, wherein The fixing base (11) comprises side plates (111), a bottom plate (112) and a top plate (113), the two side plates (111) are arranged in parallel, the bottom plate (112) is fixed between the bottom edges of the two side plates (111), the top plate (113) is fixed between the top edges of the two side plates (111), the unwinding driving member (21) is fixed between the bottom plate (112) and the top plate (113), and the unwinding plate (22) is arranged below the bottom plate (112).

7. The sand wheel forming machine screen device of claim 4, wherein, The two film spools (12) arranged in the same axis are respectively located outside the two side plates (111), and the two winding spools (13) arranged in the same axis are respectively located outside the two side plates (111).

8. The sand wheel forming machine screen device of claim 2, wherein, The moving mechanism (4) for driving the overall structure formed by the net sticking mechanism (1), the unwinding mechanism (2) and the anti-unwinding mechanism (3) to move up and down and translate, the moving mechanism (4) comprises a portal frame (41), a sliding rail (42), a sliding block (43), a transmission belt (44), a transmission wheel (45), a transmission motor (46) and a lifting driving member (47), the sliding rail (42) is horizontally fixed on the portal frame (41), the sliding block (43) is slidingly arranged on the sliding rail (42), the two transmission wheels (45) are rotatably arranged on the portal frame (41) and located at the two ends of the sliding rail (42), the transmission belt (44) is arranged around the two transmission wheels (45) and connected with the sliding block (43), the transmission motor (46) is fixed on the portal frame (41) and in transmission connection with the transmission wheel (45), and the lifting driving member (47) is installed at the bottom of the sliding block (43) and connected with the fixing base (11).

9. The sand wheel forming machine screen device of claim 1, wherein, The top net mechanism (5) comprises a fixing part (51), a central shaft (52), a top plate (53), a top lifting cylinder (54) and a top lifting frame (55), the central shaft (52) is vertically arranged on the fixing part (51), the top plate (53) is slidingly arranged on the central shaft (52) to stack the net pieces, the top lifting cylinder (54) is fixed below the fixing part (51), and the telescopic rod of the top lifting cylinder (54) is connected with the top plate (53) through the top lifting frame (55) to drive the top plate (53) to slide up and down along the central shaft (52).

10. A method of webbing a forming machine for grinding wheels as claimed in any one of claims 1 to 9, characterised in that, When the net sticking mechanism (1) is lowered to stick the net pieces, the receiving cylinder (33) is above the unwinding plate (22), and the elastic supporting member (34) is retracted in the receiving cylinder (33); when the net sticking mechanism (1) is raised to stick the net pieces, the anti-unwinding driving member (32) drives the deformable tray structure to descend and extend out of the receiving cylinder (33) along the central hole (20), so that the tray structure is elastically expanded to support the stuck net pieces; when the net sticking mechanism (1) is shifted to the sand wheel forming mold, the anti-unwinding driving member (32) drives the tray structure to ascend and retract in the receiving cylinder (33), and the unwinding driving member (21) drives the unwinding plate (22) to press down on the net pieces, so that the net pieces are unwound into the sand wheel forming mold.

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