Glass cutting device, cutting machine and cutting method for float glass production line

Abstract

The application provides a kind of float glass production line glass cutting device, cutting machine and cutting method, belong to glass cutting technical field, wherein a kind of float glass production line glass cutting device includes cross-cut frame and tool holder, cross-cut frame is transverse and straddles the top of glass conveying table;Tool holder is moved along the length direction of cross-cut frame and is arranged on cross-cut frame;From front to back, oiling assembly, cutting tool and scrap removal assembly are sequentially arranged in tool holder, oiling assembly includes rotationally arranged oiling roller;Scrap removal assembly includes rotationally arranged removal roller and dust extraction pipe arranged on the side of removal roller, dust extraction pipe is connected with negative pressure device;The outside of removal roller is provided with second flexible porous material layer.The float glass production line glass cutting device provided by the application, the second flexible porous material layer adheres the scrap and cutting oil on the surface of glass clearly and discharges through the dust extraction pipe;Solve the problem that scrap is extremely easy to adhere to the surface of glass in wet state and is difficult to remove.

Description

Technical Field

[0001] This invention belongs to the field of glass cutting technology, and more specifically, relates to a glass cutting device, cutting machine and cutting method for a float glass production line. Background Technology

[0002] After float glass is formed and cooled, the continuous glass strip needs to be cut into the required size. This usually involves two processes: scribing and breaking. Specifically, as the glass strip moves from upstream to downstream, the cutting wheel of the slitting machine first scribing longitudinal lines on both sides of the glass strip, and then the cutting wheel of the transverse cutting machine scribing transverse lines. The scribing creates cracks on the glass surface, forming cutting lines. Then, the glass is broken along the cutting lines, and the edges of the glass strip are removed to obtain the product of the required size.

[0003] Both marking and breaking processes generate glass shards. These shards adhere to the glass surface, affecting the quality of subsequent processing. Smaller shards can also float in the air, polluting the environment and harming health.

[0004] Existing technologies place great emphasis on dust collection during the breaking process, and usually include negative pressure dust collection devices. However, dust collection devices are generally lacking for the scribing process. Some existing technologies imitate the dust collection mechanism of breaking by using air suction devices to remove glass shards generated during scribing. However, due to process requirements, when cutting oil is used to assist the cutting wheel, the shards are moistened by the cutting oil and easily adhere to the glass surface, making it difficult to remove even with subsequent breaking dust collection devices. Summary of the Invention

[0005] The purpose of this invention is to provide a glass cutting device, cutting machine and cutting method for a float glass production line, which aims to solve the problem of glass debris that is difficult to remove during the scribing process.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a glass cutting device for a float glass production line is provided, including a cross-cutting frame and a knife holder, wherein the cross-cutting frame laterally spans above the glass conveying table; the knife holder is movably disposed on the cross-cutting frame along its length; the knife holder is provided with an oiling assembly, a cutting knife, and a debris removal assembly sequentially from front to back, wherein the oiling assembly includes a rotatably disposed oiling roller, and a first flexible porous material layer is disposed on the outer side of the oiling roller; the debris removal assembly includes a rotatably disposed cleaning roller and a dust suction pipe disposed on one side of the cleaning roller, the dust suction pipe being connected to a negative pressure device; a second flexible porous material layer is disposed on the outer side of the cleaning roller.

[0007] In another embodiment of this application, the oiling assembly further includes an oil dripping pipe disposed above the oiling roller, with the outlet of the oil dripping pipe facing the upper end of the oiling roller; the oil dripping pipe has multiple oil drip holes spaced apart along the axial direction of the oiling roller.

[0008] In another embodiment of this application, a plurality of strip-shaped grooves are spaced apart circumferentially on the inner wall of the first flexible porous material layer. The length direction of the grooves is consistent with the axial direction of the oiling roller, and the two ends of the grooves in the length direction are closed. The cross-section of the grooves is semi-circular or rectangular.

[0009] In another embodiment of this application, the debris removal assembly further includes an extruder, the fixed end of which is located at the upper end of the removal roller, and the free end of which has a degree of freedom in the radial direction of the removal roller. The extruder is used to extrude the second flexible porous material layer; the inlet of the suction pipe covers the free end of the extruder.

[0010] In another embodiment of this application, the suction pipe includes a first branch pipe and a second branch pipe. The first branch pipe is located behind the cleaning roller, and the inlet of the first branch pipe is elongated. The length direction of the inlet of the first branch pipe is parallel to the axial direction of the cleaning roller, and the length of the inlet of the first branch pipe is greater than the length of the cleaning roller. The inlet of the second branch pipe is provided with a flared mouth and a surrounding ring in sequence. The surrounding ring is located on the side of the flared mouth away from the second branch pipe, and the surrounding ring extends above the cleaning roller and covers the free end of the extruder.

[0011] In another embodiment of this application, the surrounding ring includes a fixed part and a movable part. The fixed part is a plate disposed in the upper middle part of the cleaning roller. The length direction of the fixed part is arranged along the axial direction of the cleaning roller, and both ends of the fixed part extend outward from the outer side of the cleaning roller. The width direction of the fixed part is arranged along the radial direction of the cleaning roller, and the edge of the fixed part in the width direction is attached to the outer wall of the second flexible porous material layer. The movable part is a U-shaped flexible sleeve, and the two ends of the flexible sleeve are respectively disposed at both ends of the length direction of the fixed part. The closed end of the flexible sleeve is fixed to the upper part of the extruder and expands and contracts with the adjustment of the extruder.

[0012] In another embodiment of this application, the cleaning roller includes an outer cylinder, a hollow inner shaft, and a sealed rotating bearing; the hollow inner shaft is connected to the outer cylinder via the sealed rotating bearing, and a plurality of negative pressure holes are provided on the side wall of the hollow inner shaft, and a negative pressure pipe is connected to the hollow inner shaft; a plurality of flow holes are uniformly provided on the side wall of the outer cylinder.

[0013] In another embodiment of this application, the outer wall of the hollow inner shaft includes an opening area and a closed area; the closed area corresponds to the area covered by the surrounding ring, and the opening area corresponds to the area below the area covered by the surrounding ring; the negative pressure hole is opened in the opening area.

[0014] The beneficial effects of the glass cutting device for a float glass production line provided by the present invention are as follows: Compared with the prior art, the glass cutting device for a float glass production line of the present invention achieves uniform application of cutting oil by setting an oiling roller on the front side of the cutting blade and using a first flexible porous material layer on the outer side of the oiling roller; it also achieves uniform application of cutting oil by setting a cleaning roller on the rear side of the cutting blade, setting a second flexible porous material layer on the outer side of the cleaning roller, and setting a dust suction pipe on one side of the cleaning roller, so that the second flexible porous material layer can adhere and remove the debris and cutting oil from the glass surface and discharge them through the dust suction pipe, and the debris will not slide on the glass surface and cause scratches during the adhesion process; thus solving the problem that debris is very easy to adhere to the glass surface in a wet state and is difficult to remove.

[0015] The present invention also provides a cutting machine, including the glass cutting device of the float glass production line described above, and further including a blade holder drive and a blade holder enclosure; the blade holder drive includes a drive rod arranged along the length direction of the cross-cutting frame, and a moving block is provided on the drive rod; the blade holder is connected to the lower end of the moving block by means of a lifting device; the blade holder enclosure is arranged around the blade holder, and the blade holder enclosure is provided with a rectangularly distributed positive pressure air passage, the outlet direction of the positive pressure air passage is downward; the oiling assembly, the cutting blade and the debris removal assembly are all arranged in the inner cavity of the blade holder enclosure.

[0016] The beneficial effects of the cutting machine provided by the present invention are as follows: Compared with the prior art, the cutting machine provided by the present invention adopts the above-mentioned glass cutting device for float glass production line, and has all the beneficial effects it has, namely, it solves the problem that debris is very easy to adhere to the glass surface in a wet state and is difficult to remove; in addition, the cutting machine can achieve longitudinal cutting with only simple deformation, and has a wide range of applications.

[0017] The present invention also provides a cutting method using the above-mentioned glass cutting device for a float glass production line, comprising the following steps:

[0018] S1. Turn on the oiling roller and the oil dripping pipe; drive the oiling roller to rotate at a constant speed, while the oil dripping pipe drips oil quickly to ensure that the first flexible porous material layer is completely immersed in oil.

[0019] S2, speed-adjustable drip pipe; to reduce the dripping speed to a uniform low-speed dripping state;

[0020] S3, Glass Cutting and Chip Removal; The cutter head moves along the length of the cross-cutting frame and cuts the glass above the glass conveyor; At the same time, the cleaning roller and negative pressure device are activated; After the cutting blade cuts the glass, the cleaning roller rotates to absorb the chips and cutting oil on the glass, and is sucked out by the suction pipe when it rotates toward the suction pipe.

[0021] S4. Reset or close the cutter holder; when repeated cutting is required, return the cutter holder to its original position along the length of the cross-cutting frame and repeat steps S3-S4; when repeated cutting is not required, close the cutting tool, negative pressure device, oil drip pipe, oiling roller and cleaning roller, and then return the cutter holder to its original position along the length of the cross-cutting frame.

[0022] The beneficial effects of the cutting method provided by the present invention are as follows: Compared with the prior art, the cutting method provided by the present invention adopts the glass cutting device of the float glass production line mentioned above, and has all the beneficial effects it has, namely, it solves the problem that debris is very easy to adhere to the glass surface in a wet state and is difficult to remove. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A longitudinal cross-sectional view along the length of the glass cutting device for a float glass production line provided in the first embodiment of the present invention;

[0025] Figure 2 A longitudinal cross-sectional view along the width direction of the glass cutting device for a float glass production line provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the cleaning roller provided in the second embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the cleaning roller provided in the third embodiment of the present invention;

[0028] Figure 5 This is a top view of a cutting machine provided in an embodiment of the present invention.

[0029] In the diagram: 1. Drive rod; 2. Moving block; 3. Tool holder; 4. Lifting device; 5. Tool holder enclosure; 6. Cutting tool; 7. Oil drip pipe; 8. Oiling roller; 9. First flexible porous material layer; 10. Cleaning roller; 11. Second flexible porous material layer; 12. First branch pipe; 13. Second branch pipe; 14. Trumpet mouth; 15. Enclosing ring; 16. Baffle; 17. Mounting plate; 18. Extrusion piece; 19. Connecting rod; 20. Outer cylinder; 21. Sealed rotating bearing; 22. Hollow inner shaft; 23. Flow hole; 24. Expanding groove; 25. Negative pressure hole; 26. Negative pressure pipe; 27. Partition; 28. Flexible sleeve; 29. ​​Glass conveying table; 30. Longitudinal cutting machine; 31. Cross-cutting frame. Detailed Implementation

[0030] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] Please see Figures 1 to 5 The present invention will now describe the glass cutting device, cutting machine, and cutting method for a float glass production line. The glass cutting device for the float glass production line includes a cross-cutting frame 31 and a blade holder 3. The cross-cutting frame 31 extends laterally across the top of the glass conveying table 29. The blade holder 3 is movably mounted on the cross-cutting frame 31 along its length. The blade holder 3 contains, from front to back, an oiling assembly, a cutting blade 6, and a debris removal assembly. The oiling assembly includes a rotating oiling roller 8, and a first flexible porous material layer 9 is provided on the outer side of the oiling roller 8. The debris removal assembly includes a rotating cleaning roller 10 and a suction pipe located on one side of the cleaning roller 10. The suction pipe is connected to a negative pressure device. A second flexible porous material layer 11 is provided on the outer side of the cleaning roller 10.

[0032] A cross-cutting frame 31 is positioned above the glass conveying table 29 and is used to install and position the blade holder 3. The blade holder 3 is movably mounted below the cross-cutting frame 31 and moves along the length of the cross-cutting frame 31. The cutting blade 6 mounted at the lower end of the blade holder 3 cuts the glass as it moves with the blade holder 3. To improve the cutting effect, an oiling roller 8 is provided in front of the cutting direction of the cutting blade 6. A first flexible porous material layer 9 is wrapped around the outside of the oiling roller 8. The first flexible porous material layer 9 is used to absorb cutting oil and make the cutting oil evenly penetrate the first flexible porous material layer 9. When the oiling roller 8 rotates on the glass surface, the first flexible porous material layer 9 evenly contacts the glass and evenly applies cutting oil to the glass.

[0033] To remove debris, a cleaning roller 10 and a suction pipe are provided on the rear side of the cutting blade 6 in the cutting direction. A second flexible porous material layer 11 is provided on the outer side of the cleaning roller 10. The second flexible porous material layer 11 contacts the glass, absorbs the cutting oil on the glass surface, and simultaneously adheres to the glass debris on the surface of the cutting oil, thus adhering both the cutting oil and the glass debris to the outer side of the second flexible porous material layer 11. As the cleaning roller 10 rotates, this part moves to the inlet end of the suction pipe and is sucked away by the suction pipe; while the cleaning roller 10 continues to rotate, it picks up the cutting oil and glass debris from the glass surface.

[0034] The glass cutting device for a float glass production line provided by this invention, compared with the prior art, achieves uniform application of cutting oil by setting an oiling roller 8 on the front side of the cutting blade 6 and using a first flexible porous material layer 9 on the outer side of the oiling roller 8; it also solves the problem that debris easily adheres to the glass surface and is difficult to remove when wet.

[0035] Optionally, the first flexible porous material layer 9 and the second flexible porous material layer 11 can be made of sponge, silicone, etc.

[0036] The negative pressure device can be located outside the cross-cutting frame 31 or the device itself. The negative pressure device can be a negative pressure pump or the like. The negative pressure device extends to the knife holder 3 through a flexible pipeline and is connected to the dust suction pipe.

[0037] Optionally, the tool holder of the cutting tool 6 can be mounted on the lower end of the tool holder 3 using a telescopic assembly. The telescopic assembly can be a cylinder or the like.

[0038] In some possible embodiments, please refer to Figure 1 The oiling assembly also includes an oil dripping pipe 7 located above the oiling roller 8, with the outlet of the oil dripping pipe 7 facing the upper end of the oiling roller 8; the oil dripping pipe 7 has multiple oil drip holes spaced apart along the axial direction of the oiling roller 8.

[0039] The oil dripping pipe 7 is connected to the oil pump via an oil pipe. The opening state and dripping speed of the oil dripping pipe 7 are adjusted by the opening and closing valve on the oil pump. The oil dripping pipe 7 is fixed on the cutter holder 3 and extends downward to the top of the oiling roller 8. It is used to drip the cutting oil in the oil pump into the first flexible porous material layer 9 on the outside of the oiling roller 8, and to make the first flexible porous material layer 9 absorb the oil evenly.

[0040] Due to the width limitation, in order to improve the uniformity of the cutting oil distribution in the first flexible porous material layer 9, multiple oil drip nozzles can be installed at the free end of the oil drip tube 7, and the multiple oil drip nozzles are distributed at intervals along the axial direction of the oiling roller 8.

[0041] Furthermore, to improve the uniformity of the cutting oil distribution, multiple strip-shaped grooves are spaced apart circumferentially on the inner wall of the first flexible porous material layer 9. The length direction of the grooves is consistent with the axial direction of the oiling roller 8, and the two ends of the grooves are closed. The cross-section of the grooves is semi-circular or rectangular.

[0042] The depth of the grooves is less than one-third of the thickness of the first flexible porous material layer 9. The grooves are distributed along the axial direction of the oiling roller 8, making the cutting oil more evenly distributed in the axial direction.

[0043] In addition, the strip groove can serve as a temporary storage area for cutting oil. After the cutting oil is fully immersed in the first flexible porous material layer 9, it seeps into the strip groove and rotates with the oiling roller 8. When the strip groove rotates to face downwards, part of the first flexible porous material layer 9 on its outer side is squeezed, while the cutting oil located in the strip groove is squeezed and seeps out to ensure the amount of cutting oil applied.

[0044] Multiple strip-shaped grooves are evenly distributed on the inner sidewall of the first flexible porous material layer 9.

[0045] In some possible embodiments, please refer to Figure 1 The debris removal assembly also includes an extruder 18, the fixed end of which is located at the upper end of the removal roller 10, and the free end of which has a degree of freedom in the radial direction of the removal roller 10. The extruder 18 is used to extrude a second flexible porous material layer 11. The inlet of the suction pipe covers the free end of the extruder 18.

[0046] The debris removal assembly is mainly used to remove cutting oil and glass debris adhering to the cutting oil. The removal roller 10 continues to rotate after adhering the cutting oil and debris until it reaches the inlet of the suction pipe. An extrusion member 18 is provided on one side of the inlet of the suction pipe. The free end of the extrusion member 18 abuts against the second flexible porous material layer 11 on the outer side of the removal roller 10 and applies a squeezing force to the second flexible porous material layer 11. This squeezing force can not only squeeze out the adsorbed cutting oil from the second flexible porous material layer 11, but also reduce the adhesion strength of debris on the outer wall of the second flexible porous material layer 11 and scrape off the debris, thereby allowing the suction pipe to better suck out the debris and cutting oil.

[0047] Optionally, the extruder 18 is plate-shaped, and the cross-section of the free end of the extruder 18 is arc-shaped to reduce damage to the second flexible porous material layer 11. The extruder 18 can also be a rotating roller, which is fixed to the fixing frame of the cleaning roller 10 by means of a connecting rod 19.

[0048] A mounting plate 17 is provided on the fixed frame of the cleaning roller 10. A telescopic member is connected to the lower end of the mounting plate 17, and a movable plate is connected to the free end of the telescopic member. The movable plate is used to rotatably connect the extruder 18. The telescopic member can adjust the extruder 18 to move up and down longitudinally. The extruder 18 is rotatably connected to the movable plate and can rotate around its hinge axis to adjust the angle between the extruder 18 and the longitudinal direction. By adjusting the telescopic member and rotating the extruder 18, the position of the extruder 18 can be adjusted, thereby changing the degree of extrusion deformation of the second flexible porous material layer 11 by the extruder 18.

[0049] In some possible embodiments, please refer to Figure 1The suction pipe includes a first branch pipe 12 and a second branch pipe 13. The first branch pipe 12 is located behind the cleaning roller 10, and the inlet of the first branch pipe 12 is elongated. The length direction of the inlet of the first branch pipe 12 is parallel to the axial direction of the cleaning roller 10, and the length of the inlet of the first branch pipe 12 is greater than the length of the cleaning roller 10. The inlet of the second branch pipe 13 is provided with a flared mouth 14 and a surrounding ring 15 in sequence. The surrounding ring 15 is located on the side of the flared mouth 14 away from the second branch pipe 13, and the surrounding ring 15 extends to the top of the cleaning roller 10 and covers the free end of the extruder 18.

[0050] A suction pipe is located on one side of the cleaning roller 10 to absorb cutting oil and debris. To ensure effective absorption, the suction pipe is divided into a first branch pipe 12 and a second branch pipe 13. The first branch pipe 12 is used to absorb larger glass debris that is not adhered to the second flexible porous material layer 11. The inlet of the first branch pipe 12 faces downward and is an elongated hole that covers the entire length of the cleaning roller 10 and extends beyond both ends of the cleaning roller 10 to cover the entire glass debris area. The second branch pipe 13 is used to absorb cutting oil and glass debris adhered to the second flexible porous material layer 11. The second branch pipe 13 is located in front of the first branch pipe 12. The inlet of the second branch pipe 13 is provided with a flared mouth 14 and a surrounding ring 15. The first end of the flared mouth 14 is connected to the inlet of the second branch pipe 13, and the second end of the flared mouth 14 faces the cleaning roller 10 and is connected to the surrounding ring 15. The surrounding ring 15 covers the area where the cleaning roller 10 contacts the extruder 18, which is located in the upper middle part of the cleaning roller 10.

[0051] Specifically, the surrounding ring 15 includes a fixed part and a movable part. The fixed part is a plate located in the upper middle part of the cleaning roller 10. The length direction of the fixed part is arranged along the axial direction of the cleaning roller 10, and both ends of the fixed part extend out of the outer side of the cleaning roller 10. The width direction of the fixed part is arranged along the radial direction of the cleaning roller 10, and the edge of the fixed part in the width direction is attached to the outer wall of the second flexible porous material layer 11. The movable part is a U-shaped flexible sleeve 28. The two ends of the flexible sleeve 28 are respectively located at both ends of the length direction of the fixed part. The closed end of the flexible sleeve 28 is fixed to the upper part of the extruder 18 and expands and contracts with the adjustment of the extruder 18.

[0052] The surrounding ring 15 is used to cover part of the outer side of the cleaning roller 10 to remove cutting oil and glass debris adhering to the second flexible porous material layer 11 on the outer side of the cleaning roller 10. The fixing part of the surrounding ring 15 is a plate located in the middle of the rear side of the cleaning roller 10. The edge of the plate is either in contact with or has a gap less than 3 mm between it and the outer wall of the second flexible porous material layer 11 on the outer side of the cleaning roller 10. This gap is used to allow the second flexible porous material layer 11 to carry smaller glass debris through, while preventing debris from falling out of the gap after the extruder 18 squeezes out the debris on the outer side of the second flexible porous material layer 11.

[0053] To accommodate the movement of the extrusion piece 18, the upper end of the surrounding ring 15 is set as a flexible sleeve 28. The flexible sleeve 28 has a certain degree of freedom. The upper end of the flexible sleeve 28 is fixed on the extrusion piece 18 and is tightened or loosened as the extrusion piece 18 is tightened.

[0054] Optionally, the flexible sleeve 28 may be made of corrugated plastic or elastic rubber.

[0055] In some possible embodiments, please refer to Figure 3 The cleaning roller 10 includes an outer cylinder 20, a hollow inner shaft 22, and a sealed rotating bearing 21. The hollow inner shaft 22 is connected to the outer cylinder 20 via the sealed rotating bearing 21. Multiple negative pressure holes 25 are provided on the side wall of the hollow inner shaft 22, and a negative pressure pipe 26 is connected to the hollow inner shaft 22. Multiple flow holes 23 are evenly provided on the side wall of the outer cylinder 20.

[0056] The outer cylinder 20 of the cleaning roller 10 is connected to a drive unit at its end or rotates due to friction with the glass. The cleaning roller 10 has a hollow inner shaft 22 running along its axis, connected to the outer cylinder 20 via sealed rotating bearings 21 at both ends. A negative pressure hole 25 is provided on the side wall of the hollow inner shaft 22, communicating with a negative pressure pipe 26 inside the hollow inner shaft 22, ensuring a negative pressure state throughout the cavity formed by the outer cylinder 20. A flow hole 23 is provided on the side plate of the outer cylinder 20, creating a pressure difference between the inner and outer sides of the flow hole 23. Because the second flexible porous material layer 11 is porous and breathable, it can absorb cutting oil into the second flexible porous material layer 11. Simultaneously, a negative pressure adsorption force is formed on the outer side of the second flexible porous material layer 11, adsorbing smaller debris particles and preventing them from falling off as the cleaning roller 10 rotates. Optionally, the negative pressure in the negative pressure tube 26 is less than the negative pressure in the suction tube. When the debris carried by the cleaning roller 10 rotates to the coverage area of ​​the suction tube, the debris is sucked up by the suction tube due to the change in the pressure difference between the inner and outer sides of the second flexible porous material layer 11.

[0057] Optionally, the inner diameter of the flow holes 23 on the outer cylinder 20 gradually increases from the inside to the outside along the radial direction of the outer cylinder 20. Alternatively, multiple expansion grooves 24 are provided on the outer side wall of the outer cylinder 20, and the multiple expansion grooves 24 are connected to the multiple flow holes 23 in a one-to-one correspondence. The inner diameter of the expansion grooves 24 is larger than the inner diameter of the flow holes 23, so as to increase the negative pressure coverage range in the flow holes 23 and the surface negative pressure intensity of the second flexible porous material layer 11.

[0058] In some possible embodiments, please refer to Figure 4The outer wall of the hollow inner shaft 22 includes an open area and a closed area. The closed area corresponds to the area covered by the surrounding hoop 15, and the open area corresponds to the area below the area covered by the surrounding hoop 15. The negative pressure hole 25 is opened in the open area.

[0059] The hollow inner shaft 22 is kept in a fixed position by means of a sealed rotating bearing 21. A negative pressure pipe 26 is connected inside the hollow inner shaft 22. The side wall of the hollow inner shaft 22 is divided into an open area and a closed area. Only the open area has negative pressure holes 25, while the closed area faces the area covered by the surrounding ring 15 and does not have negative pressure holes 25. Therefore, the negative pressure generated by the negative pressure pipe 26 is lower in the closed area than in the open area.

[0060] Specifically, a partition 27 is provided on the inner side of the outer cylinder 20, and the partition 27 is arranged radially thereafter. The coverage area of ​​the partition 27 corresponds to the area of ​​the enclosed area. The outer edge of the partition 27 is fixed to the inner side of the outer cylinder 20, while its inner edge is rotatably fitted onto the outer wall of the hollow inner shaft 22; or the inner edge of the partition 27 is fixed to the outer side of the hollow inner shaft 22, while its outer edge is rotatably fitted onto the inner wall of the outer cylinder 20. The gap between the partition 27 and the hollow inner shaft 22 allows only a small amount of air to pass through, so there is a pressure difference between two adjacent partitions 27. Optionally, if the enclosed area occupies one-quarter of the outer wall of the hollow inner shaft 22, then four partitions 27 need to be positioned, and the four partitions 27 are evenly distributed around the circumference of the hollow inner shaft 22. The partitions 27 are used to divide the gap between the hollow inner shaft 22 and the outer cylinder 20, reduce the internal airflow velocity, create a pressure difference between the enclosed area and the open area, and thus reduce the pressure requirement of the suction pipe.

[0061] Please see Figures 1 to 5 The invention also provides a cutting machine, which includes the glass cutting device of the float glass production line described above, and further includes a knife holder 3 driving component and a knife holder enclosure 5; the knife holder 3 driving component includes a driving rod 1 arranged along the length direction of the cross-cutting frame 31, and a moving block 2 is provided on the driving rod 1; the knife holder 3 is connected to the lower end of the moving block 2 by means of a lifting device 4; the knife holder enclosure 5 is arranged around the knife holder 3, and the knife holder enclosure 5 is provided with a rectangularly distributed positive pressure air passage, the outlet direction of the positive pressure air passage is downward; the oiling component, the cutting blade 6 and the debris removal component are all arranged in the inner cavity of the knife holder enclosure 5.

[0062] Specifically, the cross-cutting frame 31 spans the glass conveying table 29 laterally, and the length direction of the cross-cutting frame 31 is consistent with or at an angle to the width direction of the glass conveying table 29. A drive rod 1 is provided at the lower part of the cross-cutting frame 31, and a drive motor is connected to the end of the drive rod 1. The drive rod 1 is used to drive the movement of the cutter holder 3. Optionally, the drive rod 1 can be a guide rail or a threaded drive rod. Taking the threaded drive rod 1 as an example, the moving block 2 is threadedly engaged with the threaded drive rod 1 and moves forward and backward as the threaded drive rod 1 rotates. A smooth positioning rod is provided on one side of the drive rod 1. The moving block 2 is simultaneously fitted onto both the threaded drive rod 1 and the smooth positioning rod, with the moving block 2 threadedly engaged with the threaded drive rod 1 and slidably engaged with the smooth positioning rod.

[0063] A lifting device 4 is provided at the lower end of the moving block 2. The lifting device 4 drives the knife holder 3 to move up or down to approach or move away from the upper surface of the glass conveying table 29. The lifting device 4 can be a hydraulic cylinder or a pneumatic cylinder.

[0064] The cutter holder 3 is surrounded by rectangularly distributed cutter holder enclosures 5. Each enclosure 5 has a hollow structure connected to a positive pressure air pump, creating a positive pressure air passage within the enclosure 5. The air outlet of the enclosure 5 faces downwards. During the cutting process, the positive pressure gas is ejected downwards to the upper surface of the glass, forming an air curtain. This air curtain shields the cutter holder 3 from dust generated during the cutting process and prevents cutting oil from seeping outwards.

[0065] Furthermore, baffles 16 are provided on both sides of the blade holder 3 in the width direction. The front end of the baffles 16 extends to the front side of the oiling roller 8, and the rear end of the baffles 16 extends to the front side of the cleaning roller 10. The distance between the two baffles 16 is greater than the length of the oiling roller 8 and less than the length of the cleaning roller 10. The baffles 16 include a longitudinal plate and a blocking portion. The blocking portion is located at the lower end of the longitudinal plate, and the thickness of the blocking portion gradually increases from top to bottom. The lower end surface of the blocking portion is 1-2 mm higher than the lower end surface of the second flexible porous material layer 11 of the cleaning roller 10.

[0066] Optionally, a longitudinal slide rail is provided inside the tool holder enclosure 5, and the baffle 16 is slidably disposed on the tool holder enclosure 5.

[0067] The negative pressure air pump, positive pressure air pump, and oil pump connected to the cutting machine can be installed on the cross-cutting frame 31 or on one side of the glass conveying table 29, depending on the size and wiring method.

[0068] Furthermore, the above-mentioned cutting machine structure is also suitable for longitudinal cutting. When using the above-mentioned cutting machine for longitudinal cutting, it is only necessary to adjust the direction of the tool holder 3. The drive rod 1 can be replaced with a threaded drive rod 1 including two threaded sections with opposite thread orientations. The moving block 2, tool holder 3 and other structures are installed on both threaded sections to form a longitudinal cutting machine 30. At this time, the drive rod 1 is only used to adjust the distance between the two tool holders 3.

[0069] Compared with the prior art, the cutting machine provided by this invention adopts the glass cutting device of the float glass production line mentioned above, and has all its beneficial effects. That is, it solves the problem that the debris is easy to adhere to the glass surface in a wet state and is difficult to remove. In addition, the cutting machine can achieve longitudinal cutting with only simple deformation, and has a wide range of applications.

[0070] Please see Figures 1 to 5 A cutting method is also provided, which uses the aforementioned glass cutting device for a float glass production line, and includes the following steps:

[0071] S1. Turn on the oiling roller 8 and the oil dripping pipe 7; drive the oiling roller 8 to rotate at a constant speed, while the oil dripping pipe 7 drips oil quickly to ensure that the first flexible porous material layer 9 is completely immersed in oil.

[0072] S2, speed-regulating drip pipe 7; to reduce the dripping speed and achieve a uniform low-speed dripping state;

[0073] S3, glass cutting and chip removal; the cutter holder 3 moves along the length of the cross-cutting frame 31 and cuts the glass above the glass conveying table 29; at the same time, the cleaning roller 10 and the negative pressure device are turned on; after the cutting cutter 6 cuts the glass, the cleaning roller 10 rotates to absorb the chips and cutting oil on the glass, and is sucked out by the suction pipe when it rotates toward the suction pipe.

[0074] S4. The cutter holder 3 is reset or closed. When the cutting work needs to be repeated, the cutter holder 3 returns to its original position along the length of the cross-cutting frame 31, and steps S3-S4 are repeated. When the cutting work does not need to be repeated, the cutting tool 6, negative pressure device, oil dripping pipe 7, oiling roller 8 and cleaning roller 10 are turned off, and then the cutter holder 3 returns to its original position along the length of the cross-cutting frame 31.

[0075] Before the drive rod 1 moves the cutter holder 3, the oiling roller 8 and the oil dripping pipe 7 are first turned on. The oil dripping pipe 7 rapidly drips oil to completely immerse the first flexible porous material layer 9 on the outer side of the oiling roller 8. After complete immersion, the oil flow rate of the oil dripping pipe 7 is slowed down, and the drive rod 1 is turned on. During the cutting process, oiling, cutting, and chip removal are carried out simultaneously. After the cutting is completed, the cutter holder 3 is reset, and all equipment is shut down.

[0076] When repeated cutting is required, there is no need to shut down the equipment; the cutter holder 3 can simply be raised and reset using the lifting assembly.

[0077] The cutting method provided by this invention, compared with the prior art, adopts the glass cutting device of the float glass production line mentioned above, and has all its beneficial effects, namely, it solves the problem that debris is very easy to adhere to the glass surface in a wet state and is difficult to remove.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glass cutting device for a float glass production line, characterized in that, The device includes a cross-cutting frame (31) and a cutter holder (3). The cross-cutting frame (31) extends laterally across the top of the glass conveying table (29). The cutter holder (3) is movably mounted on the cross-cutting frame (31) along its length. The cutter holder (3) contains, from front to back, an oiling assembly, a cutting tool (6), and a debris removal assembly. The oiling assembly includes a rotatably mounted oiling roller (8), and the outer side of the oiling roller (8) is provided with a first flexible porous material layer (9). The debris removal assembly includes a rotatably mounted cleaning... The cleaning roller (10) and a suction pipe located on one side of the cleaning roller (10) are provided, the suction pipe being connected to a negative pressure device; a second flexible porous material layer (11) is provided on the outer side of the cleaning roller (10); the oiling assembly also includes an oil dripping pipe (7) located above the oiling roller (8), the outlet of the oil dripping pipe (7) facing the upper end of the oiling roller (8); the oil dripping pipe (7) has multiple oil dripping ports spaced apart along the axial direction of the oiling roller (8); the debris removal assembly also includes an extruder (18), the extruder (18) The fixed end of the extruder (18) is located at the upper end of the cleaning roller (10), and the free end of the extruder (18) has a radial degree of freedom along the cleaning roller (10). The extruder (18) is used to extrude the second flexible porous material layer (11). The inlet of the suction pipe covers the free end of the extruder (18). The suction pipe includes a first branch pipe (12) and a second branch pipe (13). The first branch pipe (12) is located behind the cleaning roller (10), and the inlet of the first branch pipe (12) is elongated. The length direction of the inlet of the first branch pipe (12) is parallel to the axial direction of the cleaning roller (10), and the length of the inlet of the first branch pipe (12) is greater than the length of the cleaning roller (10); the inlet of the second branch pipe (13) is provided with a flared mouth (14) and a surrounding hoop (15) in sequence. The surrounding hoop (15) is located on the side of the flared mouth (14) away from the second branch pipe (13), and the surrounding hoop (15) extends above the cleaning roller (10) and covers the free end of the extruder (18).

2. The glass cutting device for a float glass production line as described in claim 1, characterized in that, The inner wall of the first flexible porous material layer (9) is provided with a plurality of strip-shaped grooves spaced apart along the circumference. The length direction of the groove is consistent with the axial direction of the oiling roller (8), and the two ends of the groove in the length direction are closed. The cross-section of the groove is semi-circular or rectangular.

3. The glass cutting device for a float glass production line as described in claim 1, characterized in that, The surrounding ring (15) includes a fixed part and a movable part. The fixed part is a plate located in the upper middle part of the cleaning roller (10). The length direction of the fixed part is arranged along the axial direction of the cleaning roller (10), and both ends of the fixed part extend out of the outer side of the cleaning roller (10). The width direction of the fixed part is arranged along the radial direction of the cleaning roller (10), and the edge of the fixed part in the width direction is attached to the outer wall of the second flexible porous material layer (11). The movable part is a U-shaped flexible sleeve (28). The two ends of the flexible sleeve (28) are respectively located at both ends of the length direction of the fixed part. The closed end of the flexible sleeve (28) is fixed to the upper part of the extruder (18) and expands and contracts with the adjustment of the extruder (18).

4. The glass cutting device for a float glass production line as described in claim 3, characterized in that, The cleaning roller (10) includes an outer cylinder (20), a hollow inner shaft (22), and a sealed rotating bearing (21); the hollow inner shaft (22) is connected to the outer cylinder (20) by means of the sealed rotating bearing (21), and a plurality of negative pressure holes (25) are provided on the side wall of the hollow inner shaft (22), and a negative pressure pipe (26) is connected to the hollow inner shaft (22); a plurality of flow holes (23) are uniformly provided on the side wall of the outer cylinder (20).

5. The glass cutting device for a float glass production line as described in claim 4, characterized in that, The outer wall of the hollow inner shaft (22) includes an open area and a closed area; the closed area corresponds to the area covered by the surrounding ring (15), and the open area corresponds to the area below the area covered by the surrounding ring (15); the negative pressure hole (25) is opened in the open area.

6. A cutting machine, characterized in that, The float glass production line glass cutting device as described in any one of claims 1 to 5 further includes a knife holder (3) drive and a knife holder enclosure (5); the knife holder (3) drive includes a drive rod (1) arranged along the length direction of the cross-cutting frame (31), and a moving block (2) is provided on the drive rod (1); the knife holder (3) is connected to the lower end of the moving block (2) by means of a lifting device (4); the knife holder enclosure (5) is arranged around the knife holder (3), and the knife holder enclosure (5) is provided with a rectangularly distributed positive pressure air passage, the outlet direction of the positive pressure air passage is downward; the oiling assembly, the cutting blade (6) and the debris removal assembly are all arranged in the inner cavity of the knife holder enclosure (5).

7. A cutting method, characterized in that, The glass cutting device for a float glass production line as described in claim 1 includes the following steps: S1. Turn on the oiling roller (8) and the oil dripping pipe (7); drive the oiling roller (8) to rotate at a constant speed, and at the same time, the oil dripping pipe (7) drips oil quickly to ensure that the first flexible porous material layer (9) is completely immersed in oil. S2, speed-regulating drip pipe (7); to reduce the dripping speed and achieve a uniform low-speed dripping state; S3, glass cutting and chip removal; the cutter holder (3) moves along the length of the cross-cutting frame (31) and cuts the glass above the glass conveyor (29); at the same time, the cleaning roller (10) and the negative pressure device are turned on; after the cutting cutter (6) cuts the glass, the cleaning roller (10) rotates to absorb the chips and cutting oil on the glass, and is sucked out by the suction pipe when it rotates toward the suction pipe; S4. The cutter holder (3) is reset or closed. When the cutting work needs to be repeated, the cutter holder (3) is returned to its original position along the length of the cross-cutting frame (31), and steps S3-S4 are repeated. When the cutting work does not need to be repeated, the cutting tool (6), negative pressure device, oil drip pipe (7), oiling roller (8) and cleaning roller (10) are closed, and then the cutter holder (3) is returned to its original position along the length of the cross-cutting frame (31).

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