An automatic blanking mechanism for an electromagnet and a steel plate sawing and milling machine including the same

Abstract

The present invention discloses an automatic blanking mechanism for an electromagnet, which is composed of a truss, a truss transmission mechanism, a lifting and walking mechanism arranged on a truss cross beam, and an electromagnet adsorption blanking component arranged on the lifting and walking mechanism. The truss is in a gantry frame structure. The present invention also discloses a steel plate sawing and milling machine, which includes the automatic blanking mechanism for the electromagnet. The entire truss of the present invention is a moving component, and a driving device of the truss transmission mechanism, such as a driving motor, can be arranged on the lower side surface of the truss, which is convenient for installation, eliminates the need for high-altitude installation operations, and has better safety during installation. It is convenient for the ferromagnetic square to be more stably adsorbed to the sawn steel plate after being energized and having magnetism. Since the truss transmission mechanism is a sprocket and chain transmission mechanism, unlike a gear and rack mechanism as a transmission mechanism, a movable protective cover needs to be set up to prevent iron filings from entering the guide rails and the gear and rack mechanism. Only a protective cover needs to be set at the sprocket, which also reduces the cost of the automatic blanking mechanism.

Description

Technical Field

[0001] The present invention relates to an electromagnetic - iron automatic blanking mechanism and a steel - plate saw - milling machine including the same. Background Art

[0002] Circular sawing machines are widely used as common sawing equipment in machining. Circular sawing machines can be divided into metal circular sawing machines and woodworking circular sawing machines according to the processed products; into vertical, horizontal and scissor - type according to the feeding method; and into manual, semi - automatic and full - automatic according to the control method. For steel - plate sawing machines, although there are generally transmission mechanisms such as sprocket - chain mechanisms to convey the sawn steel plates away from the saw blade, after the transmission mechanism conveys the sawn steel plates to the far end, they are generally manually carried, with a large workload and high labor intensity. Ding Chao mentioned in the paper "Application of electro - permanent magnetic chuck in the blanking process of oil - casing couplings cutting machine" published in "Welded Pipe & Tube", Vol. 43, No. 7, July 2020: After cutting, the couplings are conveyed to the tray through the chute. The post personnel only need to stack the couplings in one layer and conduct quality inspection and numbering according to the process requirements. When a whole layer of couplings is full, the operator presses the blanking button. The z - axis of the truss rises to the safe height, the x - axis moves to the position of the couplings to be blanked, the z - axis descends to the set position to contact the whole layer of couplings, the electromagnetic chuck is powered on to magnetize the whole layer of couplings, suck the couplings and rise to the safe height, move to the basket, the electromagnetic chuck demagnetizes and puts down the whole layer of couplings, and the blanking is completed... The active walking axis of the x - axis is composed of a servo motor, a rack - and - pinion, and a double - slider guide rail for power output... The guide rails of the x - axis and the z - axis are both provided with movable protective covers to prevent iron filings from entering the guide rails and the rack - and - pinion mechanism. Although it can reduce the labor intensity of post employees and reduce the handling volume by about 3600t per year, it requires manual stacking, increasing the labor force. And after being conveyed to the end through the chute, it accumulates at the end of the chute (or at one end of the truss). For a steel - plate sawing machine, it is not appropriate for the sawn steel plates to accumulate on one side of the truss. Firstly, the length of the sawn steel - plate material is too long, and each piece is not light in weight. Moreover, its transmission mechanism uses a rack - and - pinion mechanism and is set at the upper end of the truss. On the one hand, it is inconvenient to install. On the other hand, because it uses a rack - and - pinion mechanism as the transmission mechanism, it inevitably needs to set up a movable protective cover to prevent iron filings from entering the guide rails and the rack - and - pinion mechanism, so the structure is more complex and the cost of the whole automatic blanking mechanism is higher. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects existing in the prior art and provide an electromagnetic - iron automatic blanking mechanism. The whole truss is used as a moving component, and the driving equipment of the truss transmission mechanism, such as a driving motor, can be set on the lower - side surface of the truss, which is convenient for installation, does not require high - altitude installation operations, and has better safety during installation.

[0004] To achieve the above object, the technical solution of the present invention is to design an automatic blanking mechanism for an electromagnet, which is composed of a truss, a truss transmission mechanism, a lifting and walking mechanism arranged on the truss cross beam, and an electromagnet adsorption blanking component arranged on the lifting and walking mechanism. The truss is in a gantry frame structure. The truss and the electromagnet adsorption blanking component form a truss palletizing mechanism for automatically blanking and palletizing the steel plates after being sawed by a saw milling machine; the truss is in a gantry frame structure. Regarding the entire truss as a moving part, the driving equipment of the truss transmission mechanism, such as a driving motor, can be arranged on the lower side of the truss. In this way, the installation is convenient, there is no need for high-altitude installation operations, and the safety during installation is also better.

[0005] A further technical solution is that a base is arranged below the truss on one side of the discharge conveying mechanism. The truss transmission mechanism includes a slide rail arranged on the base, and a slider adapted to the slide rail is arranged at the lower end of the truss; a rack is fixedly arranged on the base, and the length of the rack is the same as the length of the base, and the length of the base matches the stroke of the truss. A driving motor and a speed reducer are fixedly arranged on the side of the truss. The driving motor is connected to the speed reducer, and a gear adapted to the rack is fixedly arranged on the output shaft of the speed reducer. Since the truss is in a gantry frame structure, there are two bases and they are respectively arranged on both sides of the discharge conveying mechanism; the driving motor drives the speed reducer to rotate, the speed reducer drives the gear to rotate, and the gear meshes with the rack, and the rack is fixed, so the driving motor and the speed reducer move along with the truss, and the truss moves relative to the base.

[0006] A further technical solution is that the lifting and walking mechanism includes a hydraulic cylinder fixedly arranged on the truss cross beam. The exposed end of the piston rod of the hydraulic cylinder is fixedly connected to the electromagnet adsorption blanking component. The electromagnet adsorption blanking component includes an electromagnet fixedly connected to the exposed end of the piston rod of the hydraulic cylinder. The iron core of the electromagnet is fixedly connected to a ferromagnetic seat. A ferromagnetic chain is fixedly connected under the ferromagnetic seat, and a ferromagnetic block is fixedly connected under the ferromagnetic chain. After such a setting, when the truss reaches the far end of the discharge conveying mechanism (that is, directly above the sawed steel plate), the hydraulic cylinder acts to drive the electromagnet adsorption blanking component to move downward (that is, close to the sawed steel plate to be palletized). When the electromagnet is energized, the ferromagnetic seat, the ferromagnetic chain and the ferromagnetic block all have magnetism. After the ferromagnetic block contacts the steel plate, the controller controls the hydraulic cylinder to reset to adsorb the sawed steel plate. The truss continues to translate under the control of the controller. When it reaches the palletizing position, the hydraulic cylinder acts again to make the lifting and walking mechanism descend. Then, after the adsorbed steel plate is lowered to the palletizing place, the electromagnet is de-energized, and then the lifting and walking mechanism rises to complete the palletizing of one steel plate. Then, the truss returns to the initial position under the control of the controller, and the above process is repeated to realize the sequential blanking and conveying of the sawed steel plates at the far end of the discharge conveying mechanism to the palletizing position for palletizing.

[0007] A further technical solution is that the discharge conveying mechanism is a sprocket chain mechanism for conveying the sawed steel plates to a position far from the saw blade;

[0008] The width of the ferromagnetic square is the same as the width of the steel plate after sawing; or the width of the ferromagnetic square is larger than the width of the steel plate after sawing. After such a setting, it is convenient for the ferromagnetic square to be more stably adsorbed to the steel plate after sawing when it is energized and magnetized.

[0009] Another technical solution is that there are two truss transmission mechanisms, which are respectively arranged on both sides of the discharging conveying mechanism. The truss transmission mechanism is a sprocket and chain transmission mechanism; the truss is fixedly connected to the chain of the sprocket and chain transmission mechanism; the driving sprockets of the two sprocket and chain transmission mechanisms are connected by a linkage shaft, the linkage shaft is connected to the output shaft of the speed reducer, and the speed reducer is connected to the driving motor.

[0010] Since the truss transmission mechanism is a sprocket and chain transmission mechanism, unlike the gear and rack mechanism as a transmission mechanism, it is necessary to set up a movable protective cover to prevent iron filings from entering the guide rail and the gear and rack mechanism. Only a protective cover needs to be set at the sprocket, which also reduces the cost of the automatic blanking mechanism.

[0011] The driving sprockets of the two sprocket and chain transmission mechanisms are both fixedly connected to the linkage shaft. After the driving motor is started, the two sprocket and chain transmission mechanisms operate synchronously, realizing the driving of the truss to move and keeping the truss cross beam always perpendicular to the steel plate conveying direction.

[0012] In addition, although the present application is named a sawing and milling machine, it is essentially still a sawing machine or a sawing machine. However, the surface accuracy of the steel plate after sawing can reach the surface accuracy of milling. Therefore, the applicant names it a sawing and milling machine, meaning a sawing machine (or a sawing machine) that can reach the surface accuracy of milling.

[0013] The technical solution further disclosed by the present invention is: a steel plate sawing and milling machine, including the electromagnetic iron automatic blanking mechanism.

[0014] The advantages and beneficial effects of the present invention are as follows: The truss is in a gantry frame structure. Taking the entire truss as a moving part, the driving equipment of the truss transmission mechanism, such as the driving motor, can be arranged on the lower side of the truss. In this way, the installation is convenient, there is no need for high-altitude installation work, and the safety during installation is better.

[0015] It is convenient for the ferromagnetic square to be more stably adsorbed to the steel plate after sawing when it is energized and magnetized.

[0016] Since the truss transmission mechanism is a sprocket and chain transmission mechanism, unlike the gear and rack mechanism as a transmission mechanism, it is necessary to set up a movable protective cover to prevent iron filings from entering the guide rail and the gear and rack mechanism. Only a protective cover needs to be set at the sprocket, which also reduces the cost of the automatic blanking mechanism.

[0017] The driving sprockets of the two sprocket-chain drive mechanisms are both fixedly connected to the linkage shaft. In this way, after the driving motor starts, the two sprocket-chain drive mechanisms operate synchronously, enabling the driving truss to move and keeping the truss crossbeam always perpendicular to the steel plate conveying direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic view of the first embodiment of an electromagnetic automatic blanking mechanism according to the present invention;

[0019] Figure 2 is Figure 1 a side view of;

[0020] Figure 3 is Figure 1 a top view of;

[0021] Figure 4 is Figure 2 a schematic view of the state of the truss after palletizing is completed;

[0022] Figure 5 FIG. 28 is a schematic view of the third embodiment of the present invention;

[0023] Figure 6 is Figure 5 a schematic view of the state where the horizontal section of the L-shaped suspension rod is located inside the elastic sleeve after the L-shaped suspension rod appropriately presses down the elastic sleeve in FIG. 34;

[0024] Figure 7 is Figure 5 a schematic view of the state after lifting the sawn steel plate;

[0025] Figure 8 FIG. 44 is a schematic view of the fourth embodiment of the present invention;

[0026] Figure 9 is Figure 8 an enlarged schematic view of the cylinder and the upper part of the cylinder below the sawn steel plate in FIG. 50;

[0027] Figure 10 is Figure 8 a schematic view of the state at the beginning of lifting the sawn steel plate after the cylinder and the hydraulic cylinder act in FIG. 56;

[0028] Figure 11 is Figure 10 a schematic view of the state of lifting the sawn steel plate after the hydraulic cylinder continues to act in FIG. 62;

[0029] Figure 12 FIG. 66 is a schematic view of the fifth embodiment of the present invention;

[0030] Figure 13 is Figure 12 a partial enlarged schematic view of the upper right end of;

[0031] Figure 14 isFigure 12 Schematic diagram of the state after palletizing.

[0032] In the figure: 1. Truss; 2. Cross beam; 3. Base; 4. Slide rail; 5. Slide block; 6. Rack; 7. Reducer; 8. Gear; 9. Hydraulic cylinder; 10. Electromagnet; 11. Ferromagnetic seat; 12. Ferromagnetic chain; 13. Ferromagnetic square; 14. Discharge conveying mechanism; 15. Sawed steel plate; 16. Controller; 17. L-shaped suspension rod; 18. Cylinder; 19. Elastic sleeve; 20. Oil cylinder; 21. Upper curled edge; 22. Placement seat; 23. Collar; 24. Grooved steel plate; 25. Elastic suspension ring; 26. Hook; 27. Airbag; 28. Roller seat. Specific implementation mode

[0033] The following combines the drawings and embodiments to further describe the specific implementation mode of the present invention. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and cannot be used to limit the protection scope of the present invention.

[0034] Embodiment 1: As Figures 1 to 4 shown ( Figure 1 On both sides of the hydraulic cylinder in it are slide bars, which are slidably arranged with the cross beam and play a role of stable guiding. This is prior art and will not be elaborated; Figure 2 The dotted part in it is the schematic diagram of the state when the truss moves to the palletizing position, and Figure 2 the sawed steel plate in it has already been located at the palletizing place and has just been palletized; that is Figure 2 it is the state when the electromagnet is about to lose power; Figure 2 The solid line part of the truss in it represents the state when the lifting and traveling mechanism just starts to descend when the truss is translated to the conveying end of the discharge conveying mechanism; Figure 4 is the schematic diagram of the state after the hydraulic cylinder is reset after palletizing; and Figure 4The dashed line part is the schematic position after the truss is reset. The present invention is an electromagnetic automatic blanking mechanism, which is composed of a truss 1, a truss transmission mechanism, a lifting and walking mechanism arranged on the truss cross beam 2, and an electromagnetic adsorption blanking component arranged on the lifting and walking mechanism. The truss 1 is in a gantry frame structure. The truss transmission mechanism includes a slide rail 4 fixedly arranged on a base 3, and a slider 5 adapted to the slide rail 4 is arranged at the lower end of the truss 1; a rack 6 is fixedly arranged on the base 3, the length of the rack 6 is the same as the length of the base 3, the length of the base 3 matches the stroke of the truss 1 (the stroke of the truss 1 is 2350 mm), a driving motor and a reducer 7 are fixedly arranged on the side of the truss 1, the driving motor is connected to the reducer 7, and a gear 8 adapted to the rack 6 is fixedly arranged on the output shaft of the reducer 7. The lifting and walking mechanism includes a hydraulic cylinder 9 fixedly arranged on the truss cross beam 2, and the exposed end of the piston rod of the hydraulic cylinder 9 is fixedly connected to the electromagnetic adsorption blanking component. The electromagnetic adsorption blanking component includes an electromagnet 10 fixedly connected to the exposed end of the piston rod of the hydraulic cylinder 9, the iron core of the electromagnet 10 is fixedly connected to a ferromagnetic seat 11, a ferromagnetic chain 12 is fixedly connected under the ferromagnetic seat 11, and a ferromagnetic block 13 is fixedly connected under the ferromagnetic chain 12. The discharge conveying mechanism 14 is a sprocket chain mechanism for conveying the sawn steel plate 15 to a position away from the saw blade; the width of the ferromagnetic block 13 is the same as the width of the sawn steel plate 15; or the width of the ferromagnetic block 13 is larger than the width of the sawn steel plate 15.

[0035] The electromagnetic automatic blanking mechanism further includes a controller 16 located outside the truss. The controller 16 is signal-connected to the drive motor, the controller 16 is signal-connected to the hydraulic cylinder 9, and the controller 16 is also signal-connected to the electromagnet 10. The operation process is as follows: The controller 16 first controls the drive motor to act, thereby driving the truss to translate. After the truss translates to the conveying far end of the discharging conveying mechanism 14, the controller controls the hydraulic cylinder 9 to act to make the electromagnet adsorption blanking assembly descend. At the same time, the controller 16 controls the electromagnet 10 to be powered on. When it descends to the point where the ferromagnetic square 13 touches the sawn steel plate 15 and then continues to descend an appropriate distance (due to the setting of the ferromagnetic chain 12, there is no need to worry about the "hard contact" when the ferromagnetic square 13 touches the sawn steel plate 15, so there is no risk of damage to the entire structure). When it is observed manually that the ferromagnetic chain 12 has contracted, that is, it is no longer in a straightened state, the controller 16 controls the hydraulic cylinder to rise to lift the adsorbed sawn steel plate 15. After lifting, the controller 16 then controls the drive motor to act to make the truss continue to translate to the stacking position. Then the controller 16 controls the hydraulic cylinder to descend until the ferromagnetic chain 12 is no longer in a straightened state (indicating that the sawn steel plate 15 has reached the stacking position and has been stacked). At this time, the controller 16 controls the electromagnet to lose power. The ferromagnetic chain 12 has no magnetism at this time. The controller 16 controls the hydraulic cylinder to rise. Then the controller 16 controls the drive motor to rotate in the reverse direction to make the truss move back to the initial position. Then repeat the above process to stack one by one.

[0036] Embodiment 2: The difference from Embodiment 1 is that there are two truss transmission mechanisms, which are respectively arranged on both sides of the discharging conveying mechanism. The truss transmission mechanism is a sprocket-chain transmission mechanism; the truss is fixedly connected to the chain of the sprocket-chain transmission mechanism; the driving sprockets of the two sprocket-chain transmission mechanisms are connected by a linkage shaft. The linkage shaft is connected to the output shaft of the speed reducer, and the speed reducer is connected to the drive motor.

[0037] The driving sprockets of the two sprocket-chain transmission mechanisms are both fixedly connected to the linkage shaft. In this way, after the drive motor is started, the two sprocket-chain transmission mechanisms operate synchronously, realizing the movement of the truss on the drive chain and keeping the truss cross beam always perpendicular to the steel plate conveying direction. In this way, there is no need for a movable protective cover, and only a protective cover needs to be set at the sprocket, reducing the cost of the automatic blanking mechanism.

[0038] Embodiment 3: The difference from Embodiment 1 is that as Figures 5 to 7 shown ( Figure 6The middle dotted line indicates that when the L-shaped suspension rod 17 is just lowered, it is located near the outer edge of the elastic sleeve, so the elastic sleeve is pushed to rotate. The reason for the rotation is that the lower end of the elastic sleeve is supported by the cylinder). The exposed end of the piston rod of the hydraulic cylinder 9 is fixedly connected to the L-shaped suspension rod 17. After the sawn steel plate 15 reaches the far end of the conveying direction of the discharge conveying mechanism 14, the cylinder 18 located on both sides of the discharge conveying mechanism (in the conveying direction) but on the inner side of the truss 1 is actuated to push the elastic sleeve 19 to the set position (the set position is: saw After the cut steel plate 15 reaches the far end of the conveying direction of the discharge conveying mechanism 14, it is located on both sides of the sawn steel plate and has a spacing with the end faces of both sides of the sawn steel plate 15). Two hydraulic cylinders 9 are provided and are located above the setting position of the elastic sleeve 19. Just above the elastic sleeve 19 is the transverse section of the L-shaped suspension rod (the best solution is: only a small section of the transverse section of the L-shaped suspension rod is located on the inner side of the elastic sleeve, so that when the hydraulic cylinder 9 is actuated, the L-shaped suspension rod appropriately presses down the elastic sleeve, and the transverse section of the L-shaped suspension rod 17 is located in the elastic sleeve 19, that is, Figure 6 As shown, the lateral section of the L-shaped suspension rod 17 is inserted into the elastic sleeve 19 (the truss crossbeam 2 is fixedly provided with an oil cylinder 20 for pushing the hydraulic cylinder 9 to move horizontally), and then the oil cylinder 20 is actuated to push the hydraulic cylinder 9 to move a proper distance toward the middle of the crossbeam (a slide groove for the hydraulic cylinder to slide is provided on the crossbeam 2, and a slider adapted to the slide groove is provided at the lower part of the hydraulic cylinder 9), and then the hydraulic cylinder 9 is reset to lift the sawn steel plate 15 (as shown in FIG. Figure 7as shown); the elastic sleeve can adopt a structure with elastic steel wire in the middle and elastic rubber coated on the outside to meet the strength standard and elastic requirements), the edge of the horizontal section of the L-shaped hanging rod 17 is provided with an upward curling edge 21 for hooking the elastic sleeve 19. After the truss 1 reaches the stacking position, the hydraulic cylinder acts to lower the sawn steel plate lifted by the elastic sleeve to the stacking position for stacking. Then the hydraulic cylinder continues to act (that is, the piston rod of the hydraulic cylinder continues to descend a short distance) so that the upper surface of the horizontal section of the L-shaped hanging rod and the upward curling edge no longer contact the elastic sleeve. Then the oil cylinder acts to push the hydraulic cylinder to move outward horizontally so that the L-shaped hanging rod leaves the elastic sleeve. Then the hydraulic cylinder resets, and at the same time the oil cylinder resets so that the hydraulic cylinder returns to its original position. Then the truss 1 translates back to the initial position to repeat the above process to realize the stacking operation of the sawn steel plates 15 one by one (the elastic sleeve is on the workshop floor in the space between the piston rod of the air cylinder and the discharge conveying mechanism; in this embodiment, it is located on the placement seat 22). After such a setting, there is no need for an electromagnet. Since the sawn steel plate 15 is very long and heavy, the energy consumption of the method of adsorbing and discharging with an electromagnet is too large. After such a setting, the sawn steel plate 15 is lifted and stacked through a control method (or the walking path of the elastic sleeve and the L-shaped hanging rod; the entire lifting and stacking process is realized by controlling the hydraulic cylinder, the oil cylinder, the air cylinder and the driving motor for driving the truss to translate). And after stacking and then resetting, the stacking work can be repeated (although there is an elastic sleeve on each layer at the stacking place after stacking, the elastic sleeve can still be used later due to its elasticity). Even the setting of this structure can utilize the existing overhead crane in the workshop (that is, replace the hydraulic cylinder with an overhead crane; and the oil cylinder that originally pushed the hydraulic cylinder to translate can also be realized by the translation control of the overhead crane). The sawn steel plate is lifted and stacked through the overhead crane, and automatic blanking is realized through the setting of the control program).

[0039] Embodiment 4: The difference from Embodiment 3 is that, as Figures 8 to 11As shown in the figure, cylinders 18 are provided on both sides of the discharging conveying mechanism 14 and below the sawn steel plate 15. The cylinders 18 are inclined with respect to the vertical plane. The cylinders 18 are fixedly connected to the frame of the discharging conveying mechanism 14. The exposed end of the piston rod of the cylinder 18 is fixedly connected with a holding collar 23 (the collar 23 is made of elastic rubber with a certain hardness) and an inclined grooved steel plate 24. One grooved side wall of the grooved steel plate 24 is longer than its opposite grooved side wall for holding the inclined collar 23. The top end of the collar 23 is fixedly connected with an elastic hanging ring 25. After such a setting, many control processes are omitted, making the control process simple. Only after the sawn steel plate 15 is conveyed to the far end by the discharging conveying mechanism 14 (a baffle is provided at the far end in the conveying direction of the discharging conveying mechanism 14 to prevent the sawn steel plate 15 from detaching from the discharging conveying mechanism 14. This is prior art, and baffles are also provided in Embodiments 1 to 3, which will not be elaborated here), a limit switch can be set on the baffle. In this way, after the sawn steel plate 15 abuts against the limit switch, the inclined cylinders 18 on both sides of the discharging conveying mechanism act to push the collar 23 towards the sawn steel plate 15. Since the collar 23 is inclined, the collar 23 is squeezed and bent after being blocked by the sawn steel plate 15 until the cylinder 18 continues to act until the upper end of the collar reaches the end of the sawn steel plate 15, and then the collar 23 is sleeved on the end of the sawn steel plate 15 due to elastic rebound. Then, the hydraulic cylinder 9 on the cross beam 2 acts to lower the hook 26 fixedly connected to the exposed end of the piston rod of the hydraulic cylinder 9. Since an elastic hanging ring 25 is provided at the top of the collar, when the hook contacts the elastic hanging ring 25, the elastic hanging ring 25 is bent and deformed. The hydraulic cylinder continues to act to make the hook 26 continue to descend, and then the elastic hanging ring 25 rebounds to make the hook 26 hang in the elastic hanging ring 25. By using the elastic hanging ring 25 and the elastic collar 23 (and the collar 23 is made of rubber with a certain hardness, that is, the collar 23 has a certain ability to maintain its shape), during the process of lifting the sawn steel plate 15, there is no need for complicated manual operations. Only by giving a signal to the controller through the limit switch and controlling the actions of the cylinder and the hydraulic cylinder can the action of lifting the sawn steel plate 15 be realized. The setting is simple and the control program is much less. Of course, in order to better implement this embodiment, the shorter grooved side wall of the grooved steel plate 24 can also be appropriately lengthened to prevent the collar 23 from sliding out from the shorter grooved side wall when being pressed.

[0040] Embodiment 5: The difference from Embodiment 1 is that, as Figures 12 to 14 shown ( Figure 12 and Figure 14 the dotted lines in the figure indicate the positions of the sawn steel plates before palletizing; for the convenience of illustration, Figure 14(The deflated airbag between the steel plates after sawing of each layer is not shown). Compared with the first embodiment, the length of the discharge conveying mechanism 14 is increased, so that the distal end in the conveying direction of the discharge conveying mechanism 14 is basically flush with the stacking position. The baffle at the distal end in the conveying direction of the discharge conveying mechanism 14 is removed. In this way, the sawed steel plate 15 directly falls onto the stacking position when it is conveyed to the conveying end of the discharge conveying mechanism 14, and there is no need to set an electromagnet or other structures to lift the sawed steel plate 15. Each time a sawing is performed, a sawed steel plate 15 is produced. During the period when the sawed steel plate 15 is being conveyed, the worker fills the cuboid airbag 27 with air (the size of the airbag 27 is larger than the size of the sawed steel plate 15). The thickness of the airbag 27 after being filled with air matches the height of the discharge conveying mechanism 14. That is, after the airbag 27 is filled with air, the upper surface of the airbag is flush with the upper surface of the discharge conveying mechanism 14. A plurality of roller seats 28 are arranged on the upper and lower surfaces of the airbag 27, and rollers are rotatably arranged on the roller seats 28 (this facilitates conveying the sawed steel plate 15 onto the airbag so that the sawed steel plate 15 basically covers the upper surface of the airbag). After a sawed steel plate 15 is conveyed onto the airbag 27, the plug on the air inlet and outlet of the airbag is manually pulled out (the air inlet and outlet of the airbag are arranged on the side of the airbag 27, and a plug is arranged on the air inlet and outlet). After the airbag is completely deflated, the worker takes out another airbag with the same structure and the same size and places it on the sawed steel plate 15 that has just been stacked to continue the stacking process. After such a setting, there is no need for a lifting mechanism and it does not occupy the overhead crane, and the energy consumption is also greatly reduced (compared with the electromagnet method).

[0041] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An electromagnet automatic feeding mechanism, characterized in that: It is composed of a truss, a truss transmission mechanism, a lifting and traveling mechanism arranged on the truss crossbeam, and an electromagnet adsorption and unloading assembly arranged on the lifting and traveling mechanism. The truss is a gantry frame structure. A base located on one side of the discharge conveying mechanism is arranged below the truss, and the truss transmission mechanism includes a slide rail arranged on the base, and a slider adapted to the slide rail is arranged at the lower end of the truss; a rack is fixedly arranged on the base, the length of the rack is consistent with the length of the base, and the length of the base matches the stroke of the truss, and a driving motor and a reducer are fixedly arranged on the side of the truss, the driving motor is connected to the reducer, and a gear adapted to the rack is fixedly arranged on the output shaft of the reducer; The driving motor of the truss transmission mechanism is arranged on the lower side of the truss; The lifting and walking mechanism includes a hydraulic cylinder fixedly arranged on a truss crossbeam, the exposed end of the piston rod of the hydraulic cylinder is fixedly connected to an electromagnet adsorption and unloading assembly or the exposed end of the piston rod of the hydraulic cylinder is fixedly connected to a hook; the electromagnet adsorption and unloading assembly includes an electromagnet fixedly connected to the exposed end of the piston rod of the hydraulic cylinder, the iron core of the electromagnet is fixedly connected to a ferromagnetic seat, a ferromagnetic chain is fixedly connected under the ferromagnetic seat, and a ferromagnetic block is fixedly connected under the ferromagnetic chain; a cylinder is arranged on both sides of the discharge conveying mechanism and below the sawn steel plate, the cylinder is arranged obliquely to the vertical plane, the cylinder is fixedly connected to the frame of the discharge conveying mechanism, the exposed end of the piston rod of the cylinder is fixedly connected to a grooved steel plate for keeping the collar tilted, one groove side wall of the grooved steel plate is longer than the opposite groove side wall for supporting the tilted collar, the top of the collar is fixedly connected to an elastic lifting ring, a baffle is arranged at the far end of the conveying direction of the discharge conveying mechanism to prevent the sawn steel plate from escaping from the discharge conveying mechanism, and a limit switch is arranged on the baffle.

2. The electromagnet automatic unloading mechanism according to claim 1, characterized in that: The discharging conveying mechanism is a sprocket chain mechanism for conveying the sawn steel plate to a position away from the saw blade; The width of the ferromagnetic block is consistent with the width of the steel plate after sawing; or the width of the ferromagnetic block is greater than the width of the steel plate after sawing.

3. The electromagnet automatic unloading mechanism according to claim 1, characterized in that: The truss transmission mechanism is provided with two and is arranged on both sides of the discharge conveying mechanism. The truss transmission mechanism is a sprocket chain transmission mechanism. The truss is fixedly connected to the chain of the sprocket chain transmission mechanism. The driving sprockets of the two sprocket chain transmission mechanisms are connected by a linkage shaft, the linkage shaft is connected to the output shaft of the reducer, and the reducer is connected to the drive motor.

4. Steel plate sawing and milling machine, characterized in that: It comprises the electromagnet automatic unloading mechanism as described in any one of claims 1 to 3.

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