A metal blank heating and cutting system with preheating function

Abstract

The present invention discloses a metal blank heating and cutting system with a preheating function, comprising a workbench, a cutting box fixedly connected to the top of the workbench, a laser head installed on the inner wall of the cutting box, a track groove opened on the top of the workbench, an electric trolley installed on the inner wall of the track groove, a mounting seat fixedly connected to the top of the electric trolley, a vertical plate connected to the top of the mounting seat, a rotating rod rotatably connected to the vertical plate, a motor fixedly connected to the front of the vertical plate, and the output shaft of the motor fixedly connected to the rotating rod. The present invention can achieve cleaning treatment of the oxide layer and other contaminants on the surface of the metal blank during the preheating of the metal blank, thereby effectively improving the efficiency of the pretreatment of the metal blank and the cutting efficiency of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of metal blank processing and cutting, and more specifically to a metal blank heating and cutting system with a preheating function. Background Art

[0002] Metal blank heating and cutting systems with preheating function are often used in the field of metal processing, especially when metal blanks need to be cut accurately. The main components of the system include a heating device, a cutting device, a control system, and possibly a cooling system. The preheating function is intended to reduce the heat affected zone (HAZ) during cutting, improve cutting quality, reduce material deformation, and possibly increase cutting speed by preheating the metal blank.

[0003] In the metal blank heating and cutting system, resistance heating, induction heating, radiation heating or convection heating is used to preheat the metal blank. During the preheating process of the metal blank, the oxide layer and other contaminants on the surface of the metal blank cannot be cleaned. If the cutting efficiency and effect are to be improved, the metal blank needs to be cleaned, which will affect the cutting efficiency of the metal blank. When the metal blank is thicker, a metal blank needs to be cut for a longer time. The metal blank will be heated to a higher temperature, which will increase the heat impact on the metal blank and increase the probability of deformation of the metal blank. Therefore, a metal blank heating and cutting system with a preheating function is required. Summary of the invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a metal blank heating and cutting system with a preheating function, which can effectively improve the efficiency of pretreatment of metal blanks, improve the cutting efficiency, reduce the deformation of metal blanks caused by heat, and further improve the quality of metal blank cutting.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A metal blank heating and cutting system with a preheating function comprises a workbench, a cutting box is fixedly connected to the top of the workbench, a laser head is installed on the inner wall of the cutting box, a track groove is opened on the top of the workbench, an electric trolley is installed on the inner wall of the track groove, a mounting seat is fixedly connected to the top of the electric trolley, a vertical plate is connected to the top of the mounting seat, a rotating rod rotatably connected to the vertical plate is inserted through the vertical plate, a motor is fixedly connected to the front of the vertical plate, an output shaft of the motor is fixedly connected to the rotating rod, and a rotating disk is fixedly connected to the back end of the rotating rod. The rotating disk is provided with an annular storage groove, and the inner wall of the storage groove is installed with a clamping mechanism for clamping the metal blank, the top of the workbench is inserted with a square rod slidably connected to it, the top of the square rod is fixedly connected with a rotating shaft, the top of the square rod is provided with a heating box, the interior of the heating box is filled with fine sand, the bottom of the heating box is rotatably connected to the two ends of the rotating shaft respectively, the top of the workbench is inserted with two electric push rods 1 fixedly connected to it, the tops of the two electric push rods 1 are in contact with the heating box, and the heating box is provided with a heating mechanism.

[0007] The clamping mechanism includes an electric push rod 2, the non-working end of the electric push rod 2 is inserted into the rotating disk and fixedly connected thereto, the working end of the electric push rod 2 extends into the interior of the storage slot and is fixedly connected to a clamping plate, and the outer side of the clamping plate contacts the inner wall of the storage slot.

[0008] The heating mechanism includes a fixed plate, the bottom of which is fixedly connected to the workbench, a vortex tube is installed on the fixed plate, one end of the vortex tube for heating is connected to a heat supply pipe, the left end of the heat supply pipe is connected to a square box, the front of the square box is connected to two groups of heating tubes arranged at equal distances, and the front sides of the two groups of heating tubes penetrate and extend to the front side of the heating box.

[0009] A refrigeration box is fixedly connected to the top of the workbench, an air outlet pipe is connected to the front of the refrigeration box, a refrigeration pipe is connected to the back of the refrigeration box, and the left end of the refrigeration pipe is connected to one end of the vortex tube for refrigeration.

[0010] The workbench is provided with a material discharge chute, the bottom of the workbench is fixedly connected with a fixed box, and the front of the fixed box is interspersed with a collecting box slidably connected with the fixed box.

[0011] The bottom of the collection box is open, and a screen, a filter plate and a high-temperature resistant activated carbon layer are sequentially installed on the inner wall of the collection box from top to bottom.

[0012] The top of the cutting box is fixedly connected to a gas tank, the bottom of the gas tank is connected to a conduit, the bottom end of the conduit passes through and extends to the interior of the cutting box, the back of the cutting box is fixedly connected to an electric push rod three, the top of the electric push rod three is fixedly connected to a sealing cover, and the inner side of the sealing cover is in contact with the cutting box.

[0013] The bottom of the vertical plate is slidably connected to the mounting seat, the top of the mounting seat is inserted with an electric push rod four fixedly connected thereto, one end of the back of the electric push rod four is fixedly connected to the vertical plate, the bottom of the fixed box is connected to an exhaust pipe, and a fan is installed on the exhaust pipe.

[0014] The heat delivery pipe is connected with a shunt pipe, the other end of the shunt pipe penetrates and extends to the interior of the cutting box, and a solenoid valve is installed on the shunt pipe.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] This solution can clean the oxide layer and other contaminants on the surface of the metal blank during the preheating process of the metal blank, thereby effectively improving the efficiency of the pretreatment of the metal blank and the cutting efficiency of the device; when cutting the metal blank, multiple workpieces can be cut at the same time, thereby improving the working efficiency of the device; when cutting thicker metal blanks, multiple cutting methods are adopted to effectively avoid the situation where it takes a long time to cut thicker metal blanks, resulting in local overheating of the metal blank, reduce the deformation of the metal blank caused by heat, and improve the quality of metal blank cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional diagrams of the present invention;

[0018] Figure 2 This is the second stereogram of the present invention;

[0019] Figure 3 The third is a three-dimensional diagram of the present invention;

[0020] Figure 4 is a cross-sectional view of the present invention;

[0021] Figure 5 For the present invention Figure 4 Enlarged view of part A in the middle;

[0022] Figure 6 It is a three-dimensional diagram of the heating box in the present invention.

[0023] Description of the numbers in the figure:

[0024] 1. Workbench; 2. Cutting box; 3. Laser head; 4. Mounting seat; 5. Vertical plate; 6. Rotating rod; 7. Motor; 8. Rotating disk; 9. Storage slot; 10. Clamping mechanism; 101. Electric push rod 2; 102. Clamping plate; 11. Square rod; 12. Heating box; 13. Electric push rod 1; 14. Heating mechanism; 141. Fixed plate; 142. Vortex tube; 143. Heat pipe; 144. Square box; 145. Heating tube; 15. Refrigeration box; 16. Exhaust pipe; 17. Refrigeration pipe; 18. Feed chute; 19. Fixed box; 20. Collecting box; 21. Screen; 22. Filter plate; 23. High temperature resistant activated carbon layer; 24. Conduit; 25. Electric push rod three; 26. Sealing cover; 27. Electric push rod four; 28. Exhaust pipe; 29. ​​Fan; 30. Gas tank; 31. Diverter pipe; 32. Solenoid valve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] See also Figure 1-6The present invention provides a metal blank heating and cutting system with a preheating function, comprising a workbench 1, a cutting box 2 is fixedly connected to the top of the workbench 1, a laser head 3 is installed on the inner wall of the cutting box 2, a track groove is provided on the top of the workbench 1, an electric trolley is installed on the inner wall of the track groove, a mounting seat 4 is fixedly connected to the top of the electric trolley, a vertical plate 5 is connected to the top of the mounting seat 4, a rotating rod 6 rotatably connected to the vertical plate 5 is inserted through the vertical plate 5, a motor 7 is fixedly connected to the front of the vertical plate 5, and the output shaft of the motor 7 is connected to the rotating shaft The rod 6 is fixedly connected, and a rotating disk 8 is fixedly connected to one end of the back of the rotating rod 6. The rotating disk 8 is provided with an annular storage groove 9. The inner wall of the storage groove 9 is installed with a clamping mechanism 10 for clamping the metal blank. The top of the workbench 1 is interspersed with a square rod 11 slidably connected to it. The top of the square rod 11 is fixedly connected with a rotating shaft. A heating box 12 is arranged on the top of the square rod 11. The interior of the heating box 12 is filled with fine sand. The bottom of the heating box 12 is rotatably connected to the two ends of the rotating shaft. The top of the workbench 1 There are two electric push rods 13 fixedly connected thereto, the top ends of the two electric push rods 13 are in contact with the heating box 12, and the heating box 12 is provided with a heating mechanism 14; the clamping mechanism 10 includes an electric push rod 101, the non-operating end of the electric push rod 101 is inserted into the rotating disk 8 and fixedly connected thereto, the operating end of the electric push rod 101 extends to the inside of the storage slot 9 and is fixedly connected with a clamping plate 102, the non-operating end is the end that does not perform the extension and shortening action, and the operating end is the end that performs the extension and shortening action At one end of the action, the outer side of the clamping plate 102 contacts the inner wall of the storage groove 9; the heating mechanism 14 includes a fixed plate 141, the bottom of the fixed plate 141 is fixedly connected to the workbench 1, and a vortex tube 142 is installed on the fixed plate 141. The heating end of the vortex tube 142 is connected to a heat supply pipe 143, and the left end of the heat supply pipe 143 is connected to a square box 144. The front of the square box 144 is connected to two groups of heating tubes 145 arranged at equal distances. The front sides of the two groups of heating tubes 145 penetrate and extend to the front side of the heating box 12.

[0027] In the present invention, when cutting the same batch of metal blanks, the compressed air is first injected into the vortex tube 142, and then the hot air enters the heat delivery pipe 143 from the left end of the vortex tube 142 and enters the square box 144. The hot air then enters the two groups of heating tubes 145. The air heats the fine sand in the heating box 12 during the flow inside the heating tubes 145 until the fine sand is heated to the preheating temperature of the metal blank, thereby completing the preparation for cutting the metal blank.

[0028] After heating the fine sand in the heating box 12, the user puts the metal blank into the storage slot 9, and then turns on the electric push rod 101 to drive the clamping plate 102 to press the metal blank into the storage slot 9, thereby completing the clamping of the metal blank.

[0029] After the metal blank is clamped, the user turns on the two electric push rods 13 at the same time, and the two electric push rods 13 will drive the heating box 12 to rise. After the heating box 12 rises, the metal blank at the bottom will be inserted into the fine sand in the heating box 12. At this time, the user turns on the motor 7, and the motor 7 will drive the rotating rod 6 and the rotating disk 8 to rotate. Multiple metal blanks will continue to slide in the fine sand in the heating box 12, and the metal blanks will exchange heat with the fine sand to complete the preheating of the metal blanks. The fine sand heating method can improve the uniformity of the preheating of the metal blanks, and the fine sand The friction generated in the process of contact with the surface of the metal blank can achieve the effect of cleaning the surface of the metal blank, so as to achieve the purpose of cleaning the oxide layer and other pollutants on the surface of the metal blank. The motor 7 is a servo motor, and the implementation method can be that the motor 7 rotates forward fifteen degrees and then reverses twelve degrees. While maintaining the clockwise drive of the rotating disk 8, the metal blank is driven to better rub against the fine sand, thereby improving the effect of preheating and cleaning the metal blank. In addition, a baffle is fixedly connected to the top of the heating box 12, which can effectively prevent the fine sand from splashing, thereby improving the practicability of the device.

[0030] During the preheating and cleaning process of the metal blank, the two electric push rods 13 are turned on and off, and one of the two electric push rods 13 rises and the other falls, and the rise and fall of the electric push rods 13 are repeated and alternating. During the process, the heating box 12 rotates forward and backward on the rotating shaft at the top of the square rod 11. At this time, the fine sand inside the heating box 12 rolls left and right, thereby improving the cleaning effect of the fine sand on the metal blank, and the fine sand in the middle that contacts the metal blank can be moved toward the heat source of the heating tube 145, thereby improving the uniformity of the heating tube 145 heating the fine sand, thereby improving the preheating effect of the metal blank.

[0031] After the surface of the metal blank is cleaned and heated to the preheating temperature, the two electric push rods 13 are turned on in reverse until the metal blank is removed from the fine sand. Then the electric trolley is turned on and moves along the track groove. During the process, the electric trolley drives the mounting seat 4 and the vertical plate 5 to move until the metal blank on the right moves to the front of the laser head 3 controlled by the robotic arm. The user turns on the laser head 3 and controls the position of the laser head 3 through the robotic arm to perform laser cutting on the metal blank on the right. After cutting one metal blank, the user turns on the motor 7 to cut the next metal blank until all the metal blanks are cut, thereby achieving the effect of cutting multiple metal blanks.

[0032] After all the metal blanks are cut, the user then turns on the electric trolley, and the rotating disk 8 drives the metal blanks to move from the inside of the cutting box 2 to the right side of the workbench 1, and then reversely turns on all the electric push rods 13 and starts the motor 7. Whenever the storage slot 9 is facing downward, the metal blank will slide out of the storage slot 9, thereby completing the automatic unloading of the metal blanks.

[0033] When cutting thicker metal blanks, the cutting can be performed in multiple times. After the laser head 3 cuts a cutting seam on the metal blank, the motor 7 is turned on to drive the next metal blank to move to the front of the laser head 3 for cutting. Then, a cutting seam is cut on all the metal blanks one by one, and then the metal blanks are cut a second time. After several cuts, the thicker metal blanks can be cut. During the process, the thicker metal blanks are cut in an intermittent manner, which effectively avoids the situation where the local temperature of the metal blank is too high due to the long cutting time. After a metal blank is cut once, the laser head 3 will cut the next metal blank, and the first cut metal blank can be cooled for an appropriate time at this time, thereby effectively avoiding the deformation of the metal blank due to excessive temperature difference, thereby improving the cutting quality of the device.

[0034] See also Figure 1-4 , wherein: a refrigeration box 15 is fixedly connected to the top of the workbench 1, an air outlet pipe 16 is connected to the front of the refrigeration box 15, a refrigeration pipe 17 is connected to the back of the refrigeration box 15, and the left end of the refrigeration pipe 17 is connected to one end of the vortex tube 142 for refrigeration.

[0035] In the present invention, during the process of heating the fine sand, the cold air at the cooling end of the vortex tube 142 will enter the cooling pipe 17, and then the cold air will enter the refrigeration box 15 and be ejected from the air outlet pipe 16. After being ejected, the cold air can cool the metal blank, thereby improving the practicality of the device.

[0036] See also Figure 4 , wherein: a material discharge chute 18 is provided on the workbench 1, a fixed box 19 is fixedly connected to the bottom of the workbench 1, and a collecting box 20 slidably connected to the fixed box 19 is inserted on the front of the fixed box 19.

[0037] In the present invention, after the metal blank is cut, the cut waste will fall from the discharge chute 18 into the collection box 20 for collection, thereby realizing the collection of the waste and improving the practicability of the device.

[0038] See also Figure 4 , wherein: the bottom of the collecting box 20 is open, and the inner wall of the collecting box 20 is sequentially installed with a screen 21, a filter plate 22 and a high temperature resistant activated carbon layer 23 from top to bottom; the bottom of the fixed box 19 is connected to an exhaust pipe 28, and a fan 29 is installed on the exhaust pipe 28.

[0039] In the present invention, during the cutting process, the user turns on the fan 29, and the fan 29 will draw the waste gas and waste chips generated by the cutting into the collection box 20. The screen 21 can collect the waste, the filter plate 22 can collect the waste chips in the air, and the high-temperature resistant activated carbon layer 23 can adsorb harmful substances in the air, thereby effectively avoiding the impact of waste gas on the staff and improving the practicality of the device.

[0040] See also Figure 4 , wherein: a gas tank 30 is fixedly connected to the top of the cutting box 2, a conduit 24 is connected to the bottom of the gas tank 30, the bottom end of the conduit 24 passes through and extends to the inside of the cutting box 2, an electric push rod 3 25 is fixedly connected to the back of the cutting box 2, a sealing cover 26 is fixedly connected to the top of the electric push rod 3 25, the inner side of the sealing cover 26 is in contact with the cutting box 2, and the sealing cover 26 is raised and lowered by the drive of the electric push rod 3 25, so as to close or open the cutting box 2. When opened, the electric trolley can be allowed to move the metal blank to the cutting area of ​​the cutting box 2.

[0041] In the present invention, during the cutting process, the user can seal the cutting box 2 with the sealing cover 26 to prevent waste chips and harmful gases from escaping. In addition, during the cutting process, the user opens the valve on the conduit 24. At this time, the nitrogen in the gas tank 30 will be sprayed from the conduit 24 to the cutting part of the metal blank. The nitrogen can reduce the oxidation of the cutting surface and increase the cutting speed, thereby improving the practicality of the device.

[0042] See also Figure 6 , wherein: the bottom of the vertical plate 5 is slidably connected to the mounting seat 4, the top of the mounting seat 4 is interspersed with an electric push rod 4 27 fixedly connected thereto, and one end of the back side of the electric push rod 4 27 is fixedly connected to the vertical plate 5.

[0043] In the present invention, the positions of the vertical plate 5 and the mounting seat 4 can be adjusted by the electric push rod four 27, thereby controlling the distance between the metal blank and the laser head 3. During the cutting process of the metal blank, the distance between the laser head 3 and the metal blank will increase, and the focus of the laser head 3 will change. By starting the electric push rod four 27, the distance between the metal blank and the laser head 3 during the cutting process can be compensated, thereby keeping the focus of the laser head 3 always on the metal blank, thereby improving the cutting effect and speed of the metal blank.

[0044] See also Figure 3 and 4 , wherein: the heat delivery pipe 143 is connected to a shunt pipe 31 , the other end of the shunt pipe 31 penetrates and extends to the interior of the cutting box 2 , and a solenoid valve 32 is installed on the shunt pipe 31 .

[0045] In the present invention, when cutting a thicker metal blank, the solenoid valve 32 is opened, and the hot air discharged from the vortex tube 142 enters the shunt tube 31 from the heat supply pipe 143, and the hot air is then sprayed from the shunt tube 31 to the surface of the metal blank that has been preliminarily cut. Since the temperature generated at the cutting part of the blank during the laser cutting process is greater than the temperature of the blank during preheating, the temperature difference between the hot air and the cutting part of the blank is used to exchange heat, thereby cooling the metal blank.

[0046] On the other hand, keeping the temperature of the metal blank higher than or equal to the preheating temperature and lower than the temperature generated during cutting can help reduce the possibility of deformation caused by the surface temperature of the metal accessories being too low or too high when the metal blank is cut again, thereby improving the cutting effect of the metal blank.

[0047] It should be noted that, since the fan 29 is provided in this case to discharge the exhaust gas and waste chips generated by cutting, and the screen 21, filter plate 22 and high temperature resistant activated carbon layer 23 are also provided accordingly, the hot air ejected from the diversion pipe 31 in this case can reduce the temperature of the cutting area while completing the cooling operation of the metal blank. The temperature of the exhaust gas and waste chips induced by the fan 29 are both reduced, forming temperature protection for the high temperature resistant activated carbon layer 23, avoiding the decrease in the adsorption performance of the high temperature resistant activated carbon layer 23 due to high temperature, which is more in line with production needs, and the structural layout of the equipment is more compact and practical.

[0048] And after all the metal blanks in the cutting area are processed, they can still be sprayed onto the surface of the cut metal blanks in the area through the diverter pipe 31 to cool down the entire metal accessories for a period of time, and then the metal blanks are cooled again in conjunction with the air outlet pipe 16 to form an orderly gradient cooling, which maximizes the cutting stability of the metal blanks during cutting and the material stability of the cooling after cutting, and better controls the generation of thermal stress and tissue transformation.

[0049] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal blank heating and cutting system with a preheating function, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a cutting box (2), the inner wall of the cutting box (2) is installed with a laser head (3), the top of the workbench (1) is provided with a track groove, the inner wall of the track groove is installed with an electric trolley, the top of the electric trolley is fixedly connected to a mounting seat (4), the top of the mounting seat (4) is connected to a vertical plate (5), a rotating rod (6) rotatably connected to the vertical plate (5) is inserted through the vertical plate (5), a motor (7) is fixedly connected to the front of the vertical plate (5), the output shaft of the motor (7) is fixedly connected to the rotating rod (6), a rotating disk (8) is fixedly connected to the back end of the rotating rod (6), and the rotating disk (8) is provided with annular storage grooves ( 9), a clamping mechanism (10) for clamping a metal blank is installed on the inner wall of the storage groove (9), a square rod (11) slidably connected to the top of the workbench (1) is inserted through the top of the workbench (1), a rotating shaft is fixedly connected to the top of the square rod (11), a heating box (12) is arranged on the top of the square rod (11), the interior of the heating box (12) is filled with fine sand, the bottom of the heating box (12) is rotatably connected to the two ends of the rotating shaft respectively, two electric push rods (13) fixedly connected to the top of the workbench (1) are inserted through the top of the workbench (1), the top ends of the two electric push rods (13) are in contact with the heating box (12), and a heating mechanism (14) is arranged on the heating box (12).

2. The metal blank heating and cutting system with preheating function according to claim 1, characterized in that: The clamping mechanism (10) comprises a second electric push rod (101), the non-operating end of the second electric push rod (101) being inserted into the rotating disk (8) and fixedly connected thereto, the operating end of the second electric push rod (101) extending into the interior of the storage groove (9) and being fixedly connected to a clamping plate (102), the outer side of the clamping plate (102) being in contact with the inner wall of the storage groove (9).

3. The metal blank heating and cutting system with preheating function according to claim 1, characterized in that: The heating mechanism (14) comprises a fixed plate (141), the bottom of which is fixedly connected to the workbench (1), a vortex tube (142) being mounted on the fixed plate (141), one end of the vortex tube (142) for heating being connected to a heat supply tube (143), the left end of the heat supply tube (143) being connected to a square box (144), the front of the square box (144) being connected to two groups of heating tubes (145) arranged at equal distances, the front faces of the two groups of heating tubes (145) both passing through and extending to the front face of the heating box (12).

4. The metal blank heating and cutting system with preheating function according to claim 3, characterized in that: A refrigeration box (15) is fixedly connected to the top of the workbench (1), the front of the refrigeration box (15) is connected to an air outlet pipe (16), the back of the refrigeration box (15) is connected to a refrigeration pipe (17), and the left end of the refrigeration pipe (17) is connected to a refrigeration end of the vortex tube (142).

5. The metal blank heating and cutting system with preheating function according to claim 1, characterized in that: The workbench (1) is provided with a material discharge chute (18), the bottom of the workbench (1) is fixedly connected to a fixed box (19), and the front of the fixed box (19) is interspersed with a collecting box (20) slidably connected to the fixed box (19).

6. The metal blank heating and cutting system with preheating function according to claim 5, characterized in that: The bottom of the collection box (20) is open, and the inner wall of the collection box (20) is provided with a screen (21), a filter plate (22), and a high temperature resistant activated carbon layer (23) in sequence from top to bottom.

7. The metal blank heating and cutting system with preheating function according to claim 1, characterized in that: The top of the cutting box (2) is fixedly connected to a gas tank (30), the bottom of the gas tank (30) is connected to a conduit (24), the bottom end of the conduit (24) passes through and extends into the interior of the cutting box (2), the back of the cutting box (2) is fixedly connected to an electric push rod three (25), the top of the electric push rod three (25) is fixedly connected to a sealing cover (26), and the inner side of the sealing cover (26) is in contact with the cutting box (2).

8. The metal blank heating and cutting system with preheating function according to claim 5, characterized in that: The bottom of the vertical plate (5) is slidably connected to the mounting seat (4), the top of the mounting seat (4) is penetrated by an electric push rod four (27) fixedly connected thereto, the back end of the electric push rod four (27) is fixedly connected to the vertical plate (5), the bottom of the fixed box (19) is connected to an exhaust pipe (28), and a fan (29) is installed on the exhaust pipe (28).

9. The metal blank heating and cutting system with preheating function according to claim 3, characterized in that: The heat delivery pipe (143) is connected to a shunt pipe (31), the other end of the shunt pipe (31) passes through and extends into the interior of the cutting box (2), and a solenoid valve (32) is installed on the shunt pipe (31).

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