CN113955933A

CN113955933A - Scratch-proof circular glass cutting machine

Info

Publication number: CN113955933A
Application number: CN202111361101.8A
Authority: CN
Inventors: 邹进君
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-01-21

Abstract

The invention relates to the technical field of glass processing, and discloses a scratch-proof circular glass cutting machine which comprises a rack, a supporting platform, a supporting rod, a tool rest and a glass plate, wherein the top end of the rack is fixedly connected with a fixed rod on the left side of the supporting platform, the upper part of the right side of the fixed rod is fixedly connected with a stop lever, and air cavities are formed in two sides of the middle part of the supporting platform. According to the invention, through designing the fixed rod, the stop lever, the movable box, the magnetic pressing plate, the air bag and the air outlet, the movable box is driven to rotate by the supporting platform, so that the stop lever stirs the magnetic pressing plate on the movable box to extrude the air bag, gas in the air bag is extruded to enter the air outlet, and because the stop lever and the magnetic pressing plate are in sudden contact, the speed is higher when the gas in the air bag is discharged, the gas is discharged through the air outlet and blown onto the glass plate, so that fine glass fragments on the glass plate are blown off, and operators are prevented from being scratched by residual fine glass fragments on the glass plate.

Description

Scratch-proof circular glass cutting machine

Technical Field

The invention relates to the technical field of glass processing, in particular to a scratch-proof circular glass cutting machine.

Background

The main components of the glass are silicon dioxide and other oxides, the glass is amorphous solid with a random structure, the glass is widely applied to buildings and used for isolating wind and transmitting light, and the glass can not be processed by a glass cutting machine when the glass is required to be applied to various buildings.

The glass cutting machine is mainly used for cutting and processing produced glass plates into different shapes, and is convenient to be suitable for various buildings needing different shapes, the glass cutting process mainly utilizes a glass cutter with the strength higher than that of glass to mark lines on the glass plates, and then the glass plates are broken by external force, but because the special glass of the glass can generate a large amount of fine glass fragments in the cutting process, the glass plates are easy to scratch hands of carrying personnel after the glass plates are cut, the external force needed after the glass plates are broken is basically applied manually, the unevenness of the broken parts of the glass plates is often caused by the uneven force applied manually, the large waste rate of the glass plates is greatly increased, the loss is caused, and the sharp and uneven glass is easy to scratch operators.

Disclosure of Invention

Aiming at the defects of the existing glass cutting machine in the use process in the background technology, the invention provides the scratch-proof circular glass cutting machine which has the advantages of blowing away tiny glass fragments on a glass plate to prevent scratches and applying balanced force to glass to enable a glass port to be smooth, and solves the technical problems in the background technology.

The invention provides the following technical scheme: a scratch-proof circular glass cutting machine comprises a machine frame, a supporting platform, a supporting rod, a tool rest and a glass plate, wherein the top end of the machine frame is positioned at the left side of the supporting platform and is fixedly connected with a fixed rod, the upper part at the right side of the fixed rod is fixedly connected with a stop lever, two sides of the middle part in the supporting platform are provided with air cavities, one end of each air cavity, which is close to the middle part, is fixedly connected with a pressure spring, the top end of each pressure spring is fixedly connected with a piston, the inner part of the supporting platform is positioned between the two air cavities and is provided with an air groove at the upper side, the top end of the supporting platform is fixedly connected with a leather cup, the top end of the supporting platform is positioned at the left side of the glass plate and is fixedly connected with a movable box, the middle part of the left side wall of the movable box is movably connected with a magnetic pressing plate, the rear side of the magnetic pressing plate is fixedly connected with a spring, and the front side of the magnetic pressing plate is fixedly connected with an air bag, the utility model discloses a portable air bag, including activity case, gasbag, movable box, magnet board, first coil, the middle part that the right side of activity case is located gasbag department has seted up the gas outlet, the rear side sliding connection that the right side of activity case is located the gas outlet has the magnet board, the inside rear side that is located the magnet board of activity case right side wall is fixed and is equipped with first coil, the little leather cup of downside fixedly connected with of magnet board, the first electro-magnet of downside fixedly connected with of activity case right side wall.

Preferably, the top end of the rack is movably connected with a reciprocating screw rod on the right side of the supporting platform, a gear is fixedly sleeved on the middle lower part of the reciprocating screw rod, a reciprocating magnetic block is movably sleeved on the upper side of the gear of the reciprocating screw rod, and the right side edge of the reciprocating magnetic block is in contact with the side wall of the supporting rod.

Preferably, the top of supporting platform is located the right-hand member swing joint of glass board and is had magnetism to press from both sides the dress structure, the top of supporting platform is located magnetism and presss from both sides the right side fixedly connected with montant of dress structure, the fixed second coil that is equipped with in inside of montant, the smooth chamber has been seted up under the inside montant that is located of supporting platform, the left side fixedly connected with extension spring in smooth chamber, the upper and lower both sides fixedly connected with resistance layer in smooth chamber, the top fixedly connected with sliding contact of extension spring, the inside left side fixedly connected with second electro-magnet that is located smooth chamber of supporting platform, supporting platform's side fixedly connected with driving gear.

Preferably, the gear is in meshing transmission connection with the transmission gear, the sliding contact is in sliding contact with the resistive layers on the upper side wall and the lower side wall of the sliding cavity, the resistance of the resistive layer is the largest when the sliding contact is located on the right side of the resistive layer, and the resistance of the resistive layer is the smallest when the sliding contact is located on the left side of the resistive layer.

Preferably, the first electromagnet has the same magnetism as the magnetic plate, the second electromagnet has the same magnetism as the magnetic clamping structure, the first electromagnet is communicated with the first coil through a lead, and the second electromagnet is communicated with the resistance layer and the second coil through leads.

Preferably, the big leather cup is communicated with the air cavity through the air groove, and the upper side and the lower side of the piston are in sliding connection with the upper side wall and the lower side wall of the air cavity.

Preferably, the tool rest is hinged with a plurality of rods, and the length of the tool rest is adjusted by utilizing the tightness of the hinged part, so that circular glass plates with different diameters can be conveniently cut.

Preferably, the air outlet is flush with the upper side surface of the glass plate, the air outlet is communicated with the air bag, and the other end of the air bag is fixedly connected with the front side wall of the movable box.

The invention has the following beneficial effects:

1. according to the invention, through designing the fixed rod, the stop lever, the movable box, the magnetic pressing plate, the air bag and the air outlet, the movable box is driven to rotate by the supporting platform, so that the stop lever stirs the magnetic pressing plate on the movable box to extrude the air bag, gas in the air bag is extruded to enter the air outlet, and because the stop lever and the magnetic pressing plate are in sudden contact, the speed is higher when the gas in the air bag is discharged, the gas is discharged through the air outlet and blown onto the glass plate, so that fine glass fragments on the glass plate are blown off, and operators are prevented from being scratched by residual fine glass fragments on the glass plate.

2. The invention designs a transmission gear, a reciprocating screw rod, a gear, a reciprocating magnetic block, a sliding cavity, a second electromagnet and a magnetic clamping structure, the transmission gear and the reciprocating screw rod are driven to rotate by the rotation of a supporting platform, so that the reciprocating magnetic block reciprocates on the reciprocating screw rod, an electromagnetic effect is generated by the matching between the reciprocating screw rod and a second coil to generate current, the resistance value of a resistance layer is at the maximum position due to the fact that a sliding contact point in the sliding cavity is subjected to the centrifugal force generated when the supporting platform rotates, after the rotating platform stops rotating, the resistance of the resistance layer is minimum due to the fact that the sliding contact point is reset by the potential energy of a tension spring, the current generated by the second coil is transmitted to the second electromagnet to increase the magnetic force of the second electromagnet, the magnetic clamping structure is enabled to be shifted upwards by the magnetic repulsive force generated between the second electromagnet and the magnetic clamping structure, and the glass plate is enabled to be broken by the upward shifting force of the magnetic clamping structure, avoid the increase of the waste rate caused by the unevenness of the fracture of the glass plate due to the uneven external force.

3. The invention designs the magnetic pressure plate, the first coil, the first electromagnet, the magnetic plate and the small leather cup, the magnetic pressure plate is offset back and forth under the action of the blocking rod and the spring, so that the electromagnetic effect between the magnetic pressure plate and the first coil generates current to increase the magnetic force of the first electromagnet, the magnetic plate moves upwards under the magnetic repulsion force of the first electromagnet, when the support platform stops rotating, the magnetic force of the first electromagnet is reduced because the first coil does not generate current, the magnetic plate is caused to fall under the action of self weight and acts on the glass plate, the fracture of the glass plate is promoted by the falling gravity of the magnetic plate, the increase of waste rate caused by uneven force applied when the glass plate is broken manually is prevented, simultaneously, the piston in the air cavity moves outwards under the centrifugal force due to the rotation of the support platform, the air pressure in the air cavity is reduced to generate suction force to suck the air at the large leather cup into the air cavity, the large leather cup is enabled to be adsorbed on the glass plate, so that the glass plate is convenient to fix, and the glass plate is prevented from being damaged in the clamping process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural diagram illustrating a state of the support platform after the support platform is stopped;

FIG. 3 is a schematic view of the interior of the portable box of the present invention viewed from above;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention.

In the figure: 1. a frame; 11. fixing the rod; 12. a stop lever; 13. a reciprocating screw; 131. a gear; 132. a reciprocating magnetic block; 2. a motor; 3. a support platform; 31. an air cavity; 311. a pressure spring; 312. a piston; 313. an air tank; 32. a large leather cup; 33. a movable box; 331. a magnetic pressure plate; 332. a spring; 333. an air bag; 334. an air outlet; 335. a magnetic plate; 336. a first coil; 337. a small leather cup; 338. a first electromagnet; 34. a magnetic clamping structure; 35. a vertical rod; 351. a second coil; 36. a slide chamber; 361. a tension spring; 362. a resistive layer; 363. a sliding contact; 37. a second electromagnet; 38. a transmission gear; 4. a support bar; 5. a tool holder; 6. a cutter; 7. a glass plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1 and 2, a scratch-proof circular glass cutting machine, which comprises a frame 1, a middle fixedly connected motor 2 at the bottom of the frame 1, a one end fixedly connected supporting platform 3 at which a transmission shaft of the motor 2 extends out of the upper side of the frame 1, a right side fixedly connected supporting rod 4 at the top end of the frame 1, a left upper portion fixedly connected knife rest 5 of the supporting rod 4, the knife rest 5 is hinged with a plurality of rods, the length of the knife rest 5 can be adjusted by adjusting the tightness of the hinged part, and further the cutting range can be adjusted, a top end fixedly connected with scriber 6 of the knife rest 5, a glass plate 7 is placed on the upper portion of the supporting platform 3, and the circular glass plate 7 with different diameters can be conveniently cut.

Referring to fig. 1, 2, 3, 4 and 5, a fixed rod 11 is fixedly connected to the top end of a frame 1 on the left side of a supporting platform 3, a stop rod 12 is fixedly connected to the upper portion of the right side of the fixed rod 11, a reciprocating screw 13 is movably connected to the top end of the frame 1 on the right side of the supporting platform 3, a gear 131 is fixedly sleeved on the middle lower portion of the reciprocating screw 13, a reciprocating magnet 132 is movably sleeved on the upper side of the reciprocating screw 13 on the gear 131, air chambers 31 are formed on both sides of the middle portion of the supporting platform 3, a pressure spring 311 is fixedly connected to one end of the air chamber 31 near the middle portion, a piston 312 is fixedly connected to the top end of the pressure spring 311, an air groove 313 is formed between the two air chambers 31 and on the upper side of the supporting platform 3, an air cup 32 is fixedly connected to the top end of the supporting platform 3, the air cup 32 is communicated with the air chambers 31 through the air grooves 313, and the upper and lower sides of the piston 312 are slidably connected to the upper and lower side walls of the air chambers 31, ensuring that a piston 312 inside an air cavity 31 slides towards the outer side of a supporting platform 3 under the action of the centrifugal force generated by the rotation of the supporting platform 3, further promoting the air pressure inside the air cavity 31 to reduce and generate suction force, thereby promoting the large leather cup 32 to generate suction force through an air groove 313 for fixing a glass plate 7, wherein the top end of the supporting platform 3 is fixedly connected with a movable box 33 positioned at the left side of the glass plate 7, the middle part of the left side wall of the movable box 33 is movably connected with a magnetic pressing plate 331, the rear side of the magnetic pressing plate 331 is fixedly connected with a spring 332, the front side of the magnetic pressing plate 331 is fixedly connected with an air bag 333, the middle part of the right side of the movable box 33 positioned at the air bag 333 is provided with an air outlet 334, the position of the air outlet 334 is flush with the upper side surface of the glass plate 7, the air outlet 334 is communicated with the air bag 333, the other end of the air bag 333 is fixedly connected with the front side wall of the movable box 33, ensuring that when the air inside the air bag 333 is extruded by the magnetic pressing plate 331, fine glass fragments on the glass plate 7 can be released and blown down at the air outlet 334, a magnetic plate 335 is slidably connected to the right side of the movable box 33 at the rear side of the air outlet 334, a first coil 336 is fixedly arranged at the rear side of the magnetic plate 335 inside the right side wall of the movable box 33, a small leather cup 337 is fixedly connected to the lower side of the magnetic plate 335, a first electromagnet 338 is fixedly connected to the lower side of the right side wall of the movable box 33, a magnetic clamping structure 34 is movably connected to the top end of the supporting platform 3 at the right end of the glass plate 7, a vertical rod 35 is fixedly connected to the top end of the supporting platform 3 at the right side of the magnetic clamping structure 34, a second coil 351 is fixedly arranged inside the vertical rod 35, a sliding cavity 36 is arranged inside the supporting platform 3 under the vertical rod 35, a tension spring 361 is fixedly connected to the left side of the sliding cavity 36, resistive layers 362 are fixedly connected to the upper and lower sides of the sliding cavity 36, a sliding contact 363 is fixedly connected to the top end of the tension spring 361, a second electromagnet 37 is fixedly connected to the left side of the sliding cavity 36 inside the supporting platform 3, the first electromagnet 338 is the same as the magnetic plate 335 in magnetism, the second electromagnet 37 is the same as the magnetic clamping structure 34 in magnetism, the first electromagnet 338 is communicated with the first coil 336 through a conducting wire, the second electromagnet 37 is communicated with the resistive layer 362 and the second coil 351 through conducting wires, the magnetic clamping structure 34 is guaranteed to rotate and deviate under the action of the second electromagnet 37, further, the magnetic clamping structure 34 applies external force to the glass plate 7 to facilitate the same external force when the glass plate 7 is broken, the side edge of the supporting platform 3 is fixedly connected with the transmission gear 38, the gear 131 is in meshing transmission connection with the transmission gear 38, the sliding contact 363 is in sliding contact with the resistive layers 362 on the upper side wall and the lower side wall of the sliding cavity 36, the resistance value of the sliding contact 363 is the largest when the sliding contact is located on the right side of the resistive layer 362, the resistance value of the sliding contact 363 is the smallest when the sliding contact 363 is located on the left side of the resistive layer 362, and the resistance value of the sliding contact 363 is the smallest when the sliding contact 363 is located on the resistive layer 362 under the potential energy of the tension spring 361 after the supporting platform 3 stops rotating The magnetic force of the second electromagnet 37 is maximized, and the magnetic clamping structure 34 is rotationally displaced.

Referring to fig. 1, 2, 3, 4 and 5, the rotation of the supporting platform 3 drives the movable box 33 to rotate and contact with the stop lever 12, so that the stop lever 12 drives the magnetic pressing plate 331 to press the air bag 333, and the air in the air bag 333 is discharged through the air outlet 334, because the contact between the stop lever 12 and the magnetic pressing plate 331 is indirect sudden contact, and the speed of the air in the air bag 333 is higher, so as to blow off the fine glass fragments on the glass plate 7, and avoid the fine glass fragments from scratching the hands of the operator, and because the intermittent contact between the magnetic pressing plate 331 and the stop lever 12, the electromagnetic effect and the current are generated between the magnetic pressing plate 331 and the first coil 336, so that the magnetic force of the first electromagnet 338 is increased, and the magnetic plate 335 is driven to be far away from the glass plate 7 by the magnetic repulsive force, and no current is generated due to the first coil 336 after the rotation of the supporting platform 3 is stopped, the magnetic plate 335 is dropped by the self gravity to act on the glass plate 7, the breaking of the glass plate 7 is promoted, then the support platform 3 drives the reciprocating screw 13 to rotate by the transmission gear 38 and the gear 131, so that the reciprocating magnetic block 132 reciprocates up and down, and further, an electromagnetic effect is generated between the reciprocating magnetic block 132 and the second coil 351 to generate a current, meanwhile, the sliding contact 363 inside the sliding cavity 36 is located at the position with the maximum resistance value of the resistance layer 362 due to the centrifugal force generated when the support platform 3 rotates, when the support platform 3 stops rotating, the potential energy of the tension spring 361 is reset to the position with the minimum resistance value of the resistance layer 362, so that the current is transmitted to the second electromagnet 37, the magnetic force of the second electromagnet 37 is increased, and the magnetic clamping structure 34 is rotated and deflected by the magnetic repulsion force between the second electromagnet 37 and the magnetic clamping structure 34 and acts on the glass plate 7, make magnetism press from both sides dress structure 34 and exert external force to glass sheet 7 and impel glass sheet 7 fracture, thereby prevent because of the inhomogeneous glass sheet 7 fracture unevenness that leads to of the external force that the manual work was exerted, and then cause glass sheet 7's waste material rate to increase, glass sheet 7 and the very easily fish tail operating personnel's of sharpness of fracture unevenness hand simultaneously.

The using method of the invention has the following working principle:

firstly, a glass plate 7 is placed on a big leather cup 32, the glass plate 7 is clamped by a magnetic clamping structure 34, then a motor 2 is started, the motor 2 drives a supporting platform 3 to rotate, then a piston 312 moves in an air cavity 31 through centrifugal force generated when the supporting platform 3 rotates, the air pressure in the air cavity 31 is reduced to generate suction force, further the air pressure at the position of the big leather cup 32 is reduced through an air groove 313 to adsorb and fix the glass plate 7, then a movable box 33 is actively driven to move through the supporting platform 3, when the movable box 33 passes through a fixed rod 11, the magnetic pressing plate 331 is stirred by a stop lever 12 to extrude an air bag 333, so that the air in the air bag 333 is extruded into an air outlet 334 to blow fine glass fragments on the glass plate 7, thereby avoiding the fine glass fragments remained on the glass plate 7 and scratching the hands of operators, meanwhile, the magnetic pressing plate 331 is deviated to enable the magnetic effect between the magnetic pressing plate 331 and the first coil 336 to generate current, so that the magnetic force of the first electromagnet 338 is increased, the magnetic plate 335 is far away from the glass plate by repulsion, after the support platform 3 stops rotating, because no current is generated by the first coil 336, the magnetic force of the first electromagnet 338 is reduced, so that the magnetic plate 335 falls under gravity and acts on the glass plate 7, and the glass plate 7 is promoted to be broken, meanwhile, the support platform 3 drives the reciprocating screw 13 to rotate by the transmission teeth 38 and the gear 131, and drives the reciprocating magnetic block 132 to move up and down by the reciprocating screw 13, so that the electromagnetic effect is generated between the reciprocating magnetic block 132 and the second coil 351 to generate current, because the centrifugal force when the support platform 3 rotates enables the sliding contact 363 inside the sliding cavity 36 to be located at the maximum resistance value of the resistance layer 362, when the support platform 3 stops rotating, the potential energy of the tension spring 361 is reset to the minimum resistance value of the resistance layer 362, make electric current transmission to second electro-magnet 37 department, impel the magnetic force increase of second electro-magnet 37, and then through the magnetic repulsion between second electro-magnet 37 and the magnetism clamping structure 34 make magnetism clamping structure 34 produce the rotation skew, and then impel magnetism clamping structure 34 to exert external force to glass sheet 7, impel glass sheet 7 fracture, avoid exerting the untidy of 7 fractures of glass sheet because of the inhomogeneous that the external force caused by the manual work, and then increase glass sheet 7's spoilage.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent circular glass-cutting machine of fish tail, includes frame (1), supporting platform (3), bracing piece (4), knife rest (5) and glass board (7), its characterized in that: the top end of the rack (1) is positioned on the left side of the supporting platform (3) and is fixedly connected with a fixed rod (11), the upper part of the right side of the fixed rod (11) is fixedly connected with a stop lever (12), two sides of the middle part of the supporting platform (3) are provided with air cavities (31), one end of each air cavity (31) close to the middle part is fixedly connected with a pressure spring (311), the top end of each pressure spring (311) is fixedly connected with a piston (312), air grooves (313) are formed in the supporting platform (3) and positioned between the two air cavities (31) and on the upper side of the supporting platform, the top end of the supporting platform (3) is fixedly connected with a leather cup (32), the top end of the supporting platform (3) is positioned on the left side of the glass plate (7) and is fixedly connected with a movable box (33), the middle part of the left side wall of the movable box (33) is movably connected with a magnetic pressure plate (331), and the rear side of the magnetic pressure plate (331) is fixedly connected with a spring (332), the front side fixedly connected with gasbag (333) of magnetism clamp plate (331), gas outlet (334) have been seted up at the middle part that the right side of activity case (33) is located gasbag (333) department, the rear side sliding connection that the right side of activity case (33) is located gas outlet (334) has magnetic sheet (335), the fixed first coil (336) that is equipped with in the rear side that the inside magnetic sheet (335) that is located of activity case (33) right side wall, the little leather cup (337) of downside fixedly connected with of magnetic sheet (335), the first electro-magnet (338) of downside fixedly connected with of activity case (33) right side wall.

2. The round glass cutting machine of claim 1, wherein: the top of frame (1) is located the right side swing joint of supporting platform (3) and has reciprocating screw rod (13), the fixed gear (131) that has cup jointed in well lower part of reciprocating screw rod (13), reciprocating screw rod (13) are located the upside activity that gear (131) and have been cup jointed reciprocating magnetic block (132), the right flank of reciprocating magnetic block (132) and the lateral wall contact of bracing piece (4).

3. The round glass cutting machine of claim 1, wherein: the top end of the supporting platform (3) is positioned at the right end of the glass plate (7) and is movably connected with a magnetic clamping structure (34), the top end of the supporting platform (3) is positioned at the right side of the magnetic clamping structure (34) and is fixedly connected with a vertical rod (35), a second coil (351) is fixedly arranged inside the vertical rod (35), a sliding cavity (36) is arranged inside the supporting platform (3) and is positioned right below the vertical rod (35), a tension spring (361) is fixedly connected on the left side of the sliding cavity (36), a resistance layer (362) is fixedly connected on the upper side and the lower side of the sliding cavity (36), the top end of the tension spring (361) is fixedly connected with a sliding contact (363), the inner part of the supporting platform (3) positioned at the left side of the sliding cavity (36) is fixedly connected with a second electromagnet (37), the side edge of the supporting platform (3) is fixedly connected with a transmission gear (38).

4. The round glass cutting machine of claim 2, wherein: the gear (131) is in meshing transmission connection with the transmission gear (38), the sliding contact (363) is in sliding contact with the resistance layers (362) on the upper side wall and the lower side wall of the sliding cavity (36), the resistance of the resistance layer (362) is the largest when the sliding contact (363) is located on the right side of the resistance layer (362), and the resistance of the resistance layer (362) is the smallest when the sliding contact (363) is located on the left side of the resistance layer (362).

5. The round glass cutting machine of claim 2, wherein: the first electromagnet (338) has the same magnetism as the magnetic plate (335), the second electromagnet (37) has the same magnetism as the magnetic clamping structure (34), the first electromagnet (338) is communicated with the first coil (336) through a lead wire, and the second electromagnet (37) is communicated with the resistive layer (362) and the second coil (351) through a lead wire.

6. The round glass cutting machine of claim 1, wherein: the big leather cup (32) is communicated with the air cavity (31) through an air groove (313), and the upper side and the lower side of the piston (312) are in sliding connection with the upper side wall and the lower side wall of the air cavity (31).

7. The round glass cutting machine of claim 1, wherein: the tool rest (5) is hinged with a plurality of rods, and the length of the tool rest (5) is adjusted by the tightness of the hinged part, so that circular glass plates (7) with different diameters can be cut conveniently.

8. The round glass cutting machine of claim 1, wherein: the position of the air outlet (334) is flush with the upper side face of the glass plate (7), the air outlet (334) is communicated with the air bag (333), and the other end of the air bag (333) is fixedly connected with the front side wall of the movable box (33).