Belt-type air flotation table and manufacturing method thereof

Abstract

The invention discloses a belt-type air flotation table and a manufacturing method thereof, and relates to the field of glass raw sheet production lines. The belt-type air flotation table comprises a frame, an air intake duct, a size limiting plate, a belt passage opening, an air jet hole, a belt assembly, a guide bar and a lifting mechanism. The frame, the air intake duct and the size limiting plate are fixedly connected in sequence. The upper surface of the size limiting plate is processed by planing wood after assembly. The size limiting plate is provided with a plurality of belt passage openings which are processed by sawing wood after assembly. The air jet hole penetrates the size limiting plate and the top of the air intake duct, and the air intake duct is connected to a blower. A guide bar is provided at the belt passage opening, and a belt assembly is provided on the guide bar. The lifting mechanism is used to drive the guide bar to rise and fall. The advantages of the invention are: ensuring that the gap width on both sides of the guide bar can accurately reach the required size, thereby avoiding air cushion failure.

Description

Technical Field

[0001] The present invention relates to the field of glass sheet production lines, and in particular to a belt-type air flotation table and a manufacturing method thereof. Background Art

[0002] In the field of glass sheet production, belt-type air flotation tables are currently mainly used for picking up sample plates or for glass sheet unloading channels in some abnormal situations. Compared with ordinary air flotation tables, the advantage of belt-type air flotation tables is that they can transport glass sheets in a directional manner, prevent the glass sheets from moving irregularly above the air flotation table, avoid accidental breakage of the glass sheets, and ensure safe operation.

[0003] Conventional air-floating tables rely on a blower to continuously supply air, creating an air cushion between the glass and the tabletop. The depressurized air dissipates around the glass, ensuring consistent air pressure within the glass area, maintaining a strong air cushion and protecting the lower surface of the glass from scratches. However, with belt-type air-floating tables, the gap between the belt and the table allows the pressurized air provided by the blower to escape through this gap. The consistency and size of this gap along its length directly determine whether the air cushion will fail.

[0004] Patent document with announcement number CN206396061U discloses a glass processing operating table, including an air flotation platform and a glass transmission device. The air flotation platform includes a hollow platform body with multiple ventilation holes, and the bottom of the hollow platform body is connected to a blower through a pipe. The glass transmission device includes a conveyor belt arranged around the air flotation platform.

[0005] In the above-mentioned glass processing operating table, the hollow table body generally adopts a welded frame structure. The deformation caused by welding is inevitable, especially the peripheral deformation of the frame structure cannot be eliminated by correction, and there are errors in the structure of the conveyor belt, resulting in the gap between the air floating platform and the glass transmission device. The width consistency and width size in the length direction cannot be guaranteed, which easily causes uneven and excessive gas loss around the gap, resulting in failure of the air cushion and scratches caused by the rigid contact of the glass sheet with the operating table. Summary of the Invention

[0006] The technical problem to be solved by the present invention is how to prevent the air cushion of the belt-type air flotation table from failing.

[0007] The present invention solves the above technical problems by the following technical means: a belt-type air flotation table, comprising a frame, an air inlet duct, a size limiting plate, a belt passage, an air jet hole, a belt assembly, a guide bar and a lifting mechanism;

[0008] A plurality of mutually parallel air intake ducts are fixedly connected to the upper portion of the frame, and the size limiting plate is fixedly connected to the top of each air intake duct; the size limiting plate is made of a material that can be processed by wood, and the upper surface of the size limiting plate is planed wood after assembly; the size limiting plate is provided with a plurality of belt passages formed by sawing wood after assembly, the belt passages are parallel to the air intake ducts, and an air intake duct is distributed on both sides of each belt passage; a plurality of air injection holes are provided at equal intervals along the length direction of each air intake duct, and the air injection holes penetrate the size limiting plate and the top of the air intake duct; the air intake duct is connected to the blower;

[0009] A guide bar is provided at each belt passage, and a belt assembly is provided at the upper middle position of each guide bar, and the guide bar and the belt assembly extend along the length direction of the belt passage; the lifting mechanism can drive the guide bars to rise and fall synchronously, and the belt assembly has a first position higher than the upper surface of the belt-type air flotation table and a second position lower than the upper surface of the belt-type air flotation table as the guide bar rises and falls;

[0010] The gaps on both sides of the guide strip maintain a consistent width in the length direction and are equal in width on both sides. The widths of the gaps on both sides of the guide strip meet the required dimensions.

[0011] The present invention provides a size limiting plate for secondary wood processing above the frame. The upper surface of the size limiting plate is planed after assembly, which can eliminate the influence of the deformation of the upper surface of the frame on the flatness of the upper surface of the belt-type air flotation table, and the height difference between the belt assembly and the upper surface of the belt-type air flotation table can also be accurately controlled; the size limiting plate is provided with a plurality of belt passage openings which are made by sawing wood after assembly, which can eliminate the influence of the deformation of the support groove of the frame on the gap on both sides of the belt assembly. At the same time, the influence of the structural error of the belt assembly is eliminated by the guide strip, ensuring that the gap width on both sides of the guide strip can accurately reach the required size, effectively avoiding the failure of the air cushion.

[0012] Preferably, the size limiting board is made of high-density fiberboard. Compared to ordinary wood boards and industrial PVC boards, high-density fiberboard has higher strength and better dimensional stability when the ambient temperature and humidity change. Its edges are not easily deformed after the belt passes through the processing port. It has high density and will not cause gas leakage. It has similar easy processing properties as ordinary wood boards, is suitable for wood processing, and is convenient for secondary processing after assembly.

[0013] Preferably, the tabletop and the size limiting plate, as well as the size limiting plate and the air inlet duct, are bonded with glue to prevent air leakage.

[0014] Preferably, the gap width between the two sides of the guide strip is less than 1.5 mm. The extremely small gap size ensures less gas loss.

[0015] Preferably, the lifting mechanism is located in the middle of the frame. The frame has support notches corresponding to the guide bars, and the lifting mechanism is inserted into each support notch to connect to the guide bars. Rubber pads are bonded to the bottom of each support notch. This ensures the required distance between the belt assembly and the upper surface of the belt-type air flotation table is maintained, while also providing a cushioning effect when the guide bars are raised and lowered.

[0016] Preferably, when the belt assembly is in the second position, the distance between the belt assembly and the upper surface of the table is 3 to 5 mm. The small height difference ensures that the air above the guide strip is filled quickly, which is conducive to maintaining the air cushion.

[0017] Preferably, the belt-type air flotation table further comprises a tabletop, which is laid on the upper surface of the size limiting plate, the air jet holes sequentially penetrate the tabletop, the size limiting plate and the top of the air inlet duct, and the tabletop is made of steel plate, wood plate or felt.

[0018] Preferably, the belt-type air flotation table further includes a stopper and rollers, wherein the stopper is provided at the rear end of the tabletop, and rollers are provided on both the left and right sides and the rear end of the tabletop. The stopper can prevent the glass sheet from falling, and the rollers can facilitate pulling out the glass sheet.

[0019] Preferably, the air intake pipe is a steel pipe.

[0020] A method for manufacturing a belt-type air flotation table, for manufacturing the belt-type air flotation table, comprises the following steps:

[0021] Step 1: Assemble the frame, air intake duct and size limiting plate.

[0022] Step 2: Planing the upper surface of the size-limited board to make it flat to the required degree;

[0023] Step 3: sawing the size-limiting board to form a plurality of belt passages, so that the opening width of the belt passages meets the required size;

[0024] Step 4: Lay the tabletop on the upper surface of the size-limited plate and process the air-jet holes;

[0025] Step 5: Assemble the guide bar, belt assembly, and lifting mechanism, place the guide bar into the belt passage, and adjust the gap width on both sides of the guide bar to meet the required size and be equal;

[0026] Step 6: Assemble other accessories and debug.

[0027] The advantages of the present invention are:

[0028] 1. The present invention provides a size limiting plate above the frame that can be subjected to secondary wood processing. The upper surface of the size limiting plate is planed after assembly, which can eliminate the influence of deformation of the upper surface of the frame on the flatness of the upper surface of the belt-type air flotation table, and the height difference between the belt assembly and the upper surface of the belt-type air flotation table can also be accurately controlled; the size limiting plate is provided with a plurality of belt passage openings that are formed by sawing wood after assembly, which can eliminate the influence of deformation of the support groove of the frame on the gap on both sides of the belt assembly. At the same time, the influence of the structural error of the belt assembly is eliminated by the guide strip, ensuring that the gap width on both sides of the guide strip can accurately reach the required size, effectively avoiding air cushion failure.

[0029] 2. The size limiting board is made of high-density fiberboard, which has higher strength than ordinary wood boards, industrial PVC boards, etc., and has good dimensional stability when the ambient temperature and humidity change. The edge is not easy to deform after the belt passes through the mouth; it has high density and will not cause gas leakage; it has similar easy processing characteristics as ordinary wood boards, is suitable for wood processing, and is convenient for secondary processing after assembly.

[0030] 3. The tabletop and the size limiting plate, as well as the size limiting plate and the air intake duct are bonded with glue to prevent air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic front view of a belt-type air-floating table according to an embodiment of the present invention.

[0032] Figure 2 Schematic top view of a belt-type air floating table according to an embodiment of the present invention.

[0033] Figure 3 This is a partial cross-sectional schematic diagram of a belt-type air-floating table supporting a glass sheet according to an embodiment of the present invention.

[0034] Figure 4 This is a partial enlarged schematic diagram of point A of a belt-type air-floating table according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figures 1 to 4As shown, this embodiment discloses a belt-type air flotation table, including a frame 1, an air inlet duct 2, a size limiting plate 3, a belt passage 4, a table top 5, an air jet hole 6, a block (not shown), a roller 7, a guide bar 8, a belt assembly 9, and a lifting mechanism 10. The belt-type air flotation table is supplied with air by a blower 11 and is used to transport and lift glass sheets 12.

[0038] The air intake duct 2 is made of a steel pipe with a rectangular cross-section. Multiple parallel air intake ducts 2 are welded to the upper part of the frame 1, and the size limiting plate 3 is fixedly connected to the top of each air intake duct 2 by a countersunk screw; the upper surface of the size limiting plate 3 is planed after assembly; the size limiting plate 3 is provided with a plurality of belt passages 4 which are sawn after assembly, and the belt passages 4 are parallel to the air intake duct 2, and air intake ducts 2 are distributed on both sides of each belt passage 4; the table top 5 is laid on the upper surface of the size limiting plate 3 and is folded down and hemmed at the side edges of the size limiting plate 3. The table top 5 is made of thin steel plate, hardwood board or felt, which is easy to ensure the flatness of the surface of the air-floating table; the table top 5 and the size limiting plate 3, as well as the size limiting plate 3 and the air intake duct 2, are bonded with glue to prevent air leakage.

[0039] Each air intake duct 2 is provided with multiple jet holes 6 at equal intervals in the length direction, and the jet holes 6 pass through the table top 5, the size limiting plate 3 and the top of the air intake duct 2 in sequence; the air intake duct 2 is divided into two groups, which are respectively connected to the air outlets of two blowers 11. The total cross-sectional area of ​​all the jet holes 6 corresponding to one blower 11 is basically equal to the cross-sectional area of ​​the air outlet of the blower 11.

[0040] A stopper is provided at the tail end of the table top 5 , and rollers 7 are provided on the left and right sides and the tail end of the table top 5 . The stopper can prevent the glass sheet 12 from falling, and the rollers 7 are provided to facilitate pulling out the glass sheet 12 .

[0041] Each belt passage 4 is provided with a guide bar 8, which is made of drawn plastic; a belt assembly 9 is provided at the upper middle position of each guide bar 8, and the guide bar 8 and the belt assembly 9 both extend along the length direction of the belt passage 4, and the belt assembly 9 is responsible for conveying the glass sheet 12; a lifting mechanism 10 is provided in the middle of the frame 1, and a support groove is provided on the frame 1 corresponding to each guide bar 8. The lifting mechanism 10 penetrates into each support groove and connects each guide bar 8, and can drive each guide bar 8 to rise and fall synchronously; a rubber pad is bonded to the bottom of each support groove to ensure the height of the guide bar 8, and at the same time plays a buffering role when the guide bar 8 is raised and lowered; the belt assembly 9 has a first position higher than the upper surface of the table top 5 and a second position lower than the upper surface of the table top 5 as the guide bar 8 rises and falls.

[0042] Size limiting board 3 uses high-density fiberboard. Density fiberboard is made of wood fiber or other plant fiber as raw materials. After fiber preparation and application of synthetic resin, it is pressed under heating and pressurizing conditions. According to its density, it can be divided into high-density fiberboard, medium-density fiberboard and low-density fiberboard. The density of high-density fiberboard is 800kg / M 3 High-density fiberboard has the following advantages: 1. Compared with ordinary wood boards and industrial PVC boards, it has higher strength and better dimensional stability when the ambient temperature and humidity change. The edge is not easily deformed after the belt passes through the port 4; 2. It has high density and will not cause gas leakage; 3. It has similar easy processing characteristics as ordinary wood boards, suitable for wood processing, and can be subjected to secondary processing.

[0043] The frame 1 will deform during the welding process. Although appropriate deformation correction measures have been taken, the correction measures have limited effect on the support grooves and upper surface correction of the frame 1. The present invention sets a size limiting plate 3 that can undergo secondary wood processing above the frame 1. The upper surface of the size limiting plate 3 is planed after assembly, which can eliminate the influence of the deformation of the upper surface of the frame 1 on the flatness of the upper surface of the table top 5, and the distance H between the belt assembly 9 and the upper surface of the table top 5 can also be accurately controlled; the size limiting plate 3 is provided with a plurality of belt passages 4 that are processed by sawing wood after assembly, which can eliminate the influence of the deformation of the support grooves of the frame 1 on the gaps on both sides of the belt assembly 9, and at the same time eliminate the influence of the structural error of the belt assembly 9 through the guide bar 8, ensuring that the gap width L2 on both sides of the guide bar 8 can accurately reach the required size, effectively avoiding air cushion failure.

[0044] The opening width L1 of the belt passage 4 should be minimized during design, based on the width of the belt assembly 9 being able to carry the conveyed glass sheet 12, and ensuring the operating space required for secondary processing; the gap on both sides of the guide bar 8 maintains a consistent width in the length direction and the width on both sides is equal, ensuring uniform gas loss on both sides of the belt passage 4; the gap width L2 on both sides of the guide bar 8 is less than 1.5mm, and the extremely small gap size ensures less gas loss; when the belt assembly 9 is in the second workstation, the distance H between the belt assembly 9 and the upper surface of the table 5 is 3~5mm, and the small height difference ensures that the gas filling speed above the guide bar 8 is very fast, which is conducive to the maintenance of the air cushion; the two air inlet ducts 2 adjacent to each belt passage 4 should be set as close as possible to the support groove of the frame 1, so as to be close to the gap on both sides of the guide bar 8, so as to better compensate for the gas loss in the gap.

[0045] The belt-type air-floating table can accommodate one or more glass sheets 12 and provide a conveying buffer stroke. After receiving the instruction to allow the glass sheet to enter, the belt components 9 work synchronously to convey the glass sheet 12 at the first workstation; after the glass sheet 12 reaches the designated safe position, the lifting mechanism 10 drives the guide bars to descend synchronously 8, so that the belt components 9 are lowered to the second workstation; before that, the blower 11 starts to supply air, and the high-pressure gas passes through the air inlet pipe 2 and is sprayed onto the top of the table top 5 through the air injection holes 6 densely distributed throughout the table top 5. When the glass sheet 12 is about to approach the table top 5, a certain thickness of air cushion is formed to support the glass sheet 12, which is convenient for manual picking; the glass sheet 12 is covered on the top of the air cushion under the influence of its own rigidity, and the width L1 of the belt through-hole 4 is limited, which will not cause the glass sheet 12 to directly contact the table top 5 at this position, thereby avoiding the table top 5 scratching the glass surface when the glass sheet 12 is manually picked up.

[0046] This embodiment also discloses a method for manufacturing a belt-type air flotation table, which includes the following steps:

[0047] Step 1: Assemble the frame 1, the air intake duct 2 and the size limiting plate 3.

[0048] Step 2: Plane the upper surface of the size limiting plate 3 to make its flatness meet the requirements.

[0049] Step 3: Saw the size limiting plate 3 to form multiple belt passages 4, so that the opening width L1 of the belt passage 4 and the width X of the size limiting plate 3 protruding from the edge of the support slot meet the required dimensions. The dimensions of L1 and X need to take into account the thickness of the table top 5.

[0050] Step 4: Lay the tabletop 5 on the upper surface of the size limiting plate 3 and fold down the side edges of the size limiting plate 3 to form the air injection holes 6.

[0051] Step 5: Assemble the guide bar 8, belt assembly 9 and lifting mechanism 10, place the guide bar 8 into the belt passage, and adjust the gap width L2 on both sides of the guide bar 8 and the distance H between the belt assembly 9 and the upper surface of the desktop 5 to meet the required size and be equal. The distance H between the belt assembly 9 and the upper surface of the desktop 5 is adjusted by the rubber pad.

[0052] Step 6: Assemble other accessories and debug.

[0053] Example 2

[0054] The difference between this embodiment and the first embodiment is that the table top 5 is only laid on the upper surface of the size limiting plate 3 without being folded down and edged, and the side walls of the size limiting plate 3 are polished and painted. At this time, the dimensions of L1 and X do not take into account the thickness of the table top 5.

[0055] The dimensional requirements achieved by the equipment assembly in the above embodiments have all been tested in actual use, and the air cushion retention effect is optimal, and has been currently applied in multiple production occasions.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A belt-type air flotation table, characterized by: It includes a tabletop, a frame, an air intake duct, a size limiting plate, a belt through port, an air injection hole, a belt assembly, a guide bar and a lifting mechanism; The tabletop is laid on the upper surface of the size limiting plate, A plurality of mutually parallel air intake ducts are fixedly connected to the upper portion of the frame, and the size limiting plate is fixedly connected to the top of each air intake duct; the size limiting plate is made of a material that can be processed by wood, and the upper surface of the size limiting plate is planed wood after assembly; the size limiting plate is provided with a plurality of belt passages formed by sawing wood after assembly, the belt passages are parallel to the air intake ducts, and an air intake duct is distributed on both sides of each belt passage; a plurality of air injection holes are provided at equal intervals along the length direction of each air intake duct, and the air injection holes penetrate the size limiting plate and the top of the air intake duct; the air intake duct is connected to the blower; A guide bar is provided at each belt passage, and a belt assembly is provided at the upper middle position of each guide bar, and the guide bar and the belt assembly extend along the length direction of the belt passage; the lifting mechanism can drive the guide bars to rise and fall synchronously, and the belt assembly has a first position higher than the upper surface of the belt-type air flotation table and a second position lower than the upper surface of the belt-type air flotation table as the guide bar rises and falls; The gaps on both sides of the guide strips maintain a consistent width in the length direction and are equal in width on both sides, and the widths of the gaps on both sides of the guide strips meet the required dimensions; The tabletop and the size limiting plate, as well as the size limiting plate and the air intake duct are bonded together with glue; The method for manufacturing the belt-type air flotation table comprises the following steps: Step 1: Assemble the frame, air intake duct and size limiting plate; Step 2: Planing the upper surface of the size-limited board to make it flat to the required degree; Step 3: sawing the size-limiting board to form a plurality of belt passages, so that the opening width of the belt passages meets the required size; Step 4: Lay the tabletop on the upper surface of the size-limited plate and process the air-jet holes; Step 5: Assemble the guide bar, belt assembly and lifting mechanism, place the guide bar into the belt passage, and adjust the gap width on both sides of the guide bar to meet the required size and be equal.

2. The belt-type air-floating table according to claim 1, wherein: The size limiting board is made of high-density fiberboard.

3. The belt-type air-floating table according to claim 1, wherein: The gap width between the two sides of the guide strip is less than 1.5 mm.

4. The belt-type air-floating table according to claim 1, wherein: The lifting mechanism is arranged in the middle of the frame. The frame is provided with support notches corresponding to the guide bars. The lifting mechanism penetrates into the support notches to connect the guide bars. The bottom of each support notch is bonded with a rubber pad.

5. The belt-type air-floating table according to claim 4, wherein: When the belt assembly is at the second working position, the distance between the belt assembly and the upper surface of the desktop is 3 to 5 mm.

6. The belt-type air-floating table according to claim 1, wherein: The air injection holes sequentially penetrate the table top, the size limiting plate and the top of the air inlet duct; the table top is made of steel plate, wood plate or felt.

7. The belt-type air-floating table according to claim 1, wherein: The belt-type air flotation table further comprises a stopper and a roller. The tail end of the table top is provided with a stopper, and the left and right sides and the tail end of the table top are provided with rollers.

8. The belt-type air-floating table according to claim 1, wherein: The air intake pipe is made of a steel pipe.

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