CN112044988A

CN112044988A - Sheet metal sheet bending machine with heat treatment function

Info

Publication number: CN112044988A
Application number: CN202010900112.8A
Authority: CN
Inventors: 童中林
Original assignee: Hangzhou Jiasheng Technology Co ltd
Current assignee: Hangzhou Jiasheng Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-12-08

Abstract

The invention discloses a sheet metal sheet bending machine with a heat treatment function, which comprises a machine body, wherein baffles are symmetrically arranged at the left side and the right side of the end surface of the top of the machine body, a male die is arranged between the baffles at the left side and the right side, and a heating resistance block capable of heating and softening a bending area of a sheet metal sheet is arranged at the top of the male die; the metal plate bending device is simple in structure and convenient to use, when a metal plate is bent, the rotating arms on the two sides can rotate and the sliding blocks can move, the bending angle of a metal plate sheet can be freely selected, the metal plate bending device can be adjusted according to customer requirements, the production and processing range is enlarged, meanwhile, the sliding blocks on the two sides can independently slide, the metal plate sheet can be bent at different positions, the metal plate sheet bending limiting area is reduced, the metal plate can be bent without manpower, the labor cost is reduced, the bending area can be subjected to heat treatment, the phenomenon that the metal plate sheet is rebounded after being bent is avoided, the processing precision is improved, the rejection rate is low, the economic benefit.

Description

Sheet metal sheet bending machine with heat treatment function

Technical Field

The invention relates to the technical field of platinum processing, in particular to a sheet metal bending machine with a heat treatment function.

Background

The sheet metal processing is an important process for forming sheet metal products, comprises the traditional methods and technological parameters of cutting blanking, blanking processing, bending forming and the like, also comprises various cold stamping die structures and technological parameters, various equipment working principles and operation methods, and also comprises a new stamping technology and a new process, and the sheet metal sheets need to be bent frequently in the processing process, so that the sheet metal sheets meet the assembly requirements, and the sheet metal products are convenient to be fixed and formed in the later-stage assembling process.

The existing metal plate bending equipment is characterized in that when a metal plate is bent, a bending angle is limited to a fixed value by a bending mould and cannot be adjusted according to requirements, the production and processing range is limited, the middle part of a metal plate sheet can be processed mostly by the existing machinery, the metal plate sheet bending area is limited, the metal plate needs to be bent manually except for the middle part, time and labor are wasted, the processing precision is reduced, and the rejection rate is high.

Disclosure of Invention

The invention aims to provide a sheet metal sheet bending machine with a heat treatment function, which is used for overcoming the defects in the prior art.

The sheet metal bending machine with the heat treatment function comprises a machine body, wherein baffle plates are symmetrically arranged on the left side and the right side of the end surface of the top of the machine body, a male die is arranged between the baffle plates on the left side and the right side, a heating resistor block capable of heating and softening a bending area of a sheet metal sheet is arranged on the top of the male die, a hydraulic rod is connected onto the end surface of the bottom of the male die, the bottom end of the hydraulic rod is connected with a hydraulic pump fixedly arranged in the machine body, a cooling assembly which cools the sheet metal sheet immediately after the sheet metal sheet is bent to avoid bending and rebounding is arranged between the baffle plates on the left side and the right side, a first rotating shaft is rotatably connected between the end surface of one side, far away from each other, of the baffle plates on the left side and the right side of the machine body and a first rotating shaft is provided with two, the left and right sides be equipped with in the top end face of the relative one side of slider and rotate the groove, it has the rotary drum to rotate in the groove, the rotor arm has set firmly on the rotary drum, the rotor arm is connected with through a buffering subassembly and presss from both sides the relative centre gripping arm of mouth, bilateral symmetry is equipped with first rotation chamber in the organism, the left and right sides first rotation axis a side end face of keeping away from each other stretch into in the first rotation chamber and connect and set firmly in first rotation chamber keeps away from a power motor on the end wall each other, the left and right sides simultaneously be equipped with between the first rotation chamber and enable first rotation axis rotate and drive the cooling module carries out the linkage subassembly of work in the metal plate bending process.

Optionally, the cooling assembly comprises spray heads symmetrically arranged on the end faces of the left and right sides opposite to the baffle, storage cavities are symmetrically arranged in the machine body, cooling liquid is filled in the storage cavities, liquid outlet pipes connected with the spray heads are communicated with the bottoms of the end faces of the left and right sides opposite to the storage cavities, first sliding grooves are arranged in the front and back of the liquid outlet pipes in a penetrating manner, rack plates are connected in the first sliding grooves in a sliding manner, through holes capable of being communicated with the liquid outlet pipes are formed in the rack plates, the end faces of the top of the rack plates are communicated with a second rotating cavity arranged in the machine body, a second rotating shaft is rotatably connected between the left end wall and the right end wall of the second rotating cavity, first gears meshed with the rack plates are fixedly arranged on the second rotating shaft, and shielding assemblies for preventing the cooling liquid sprayed by the spray heads from splashing are arranged in the baffle plates on the left and right, and after spraying is finished, the cooling liquid can be recovered through a recovery assembly.

Optionally, shelter from the subassembly and include bilateral symmetry and locate the left and right sides the groove of accomodating on the baffle top end face, accomodate and be equipped with thermal-insulated asbestos in the groove, the left and right sides accomodate tank bottom terminal surface switch-on lift groove, sliding connection has in the lift groove with thermal-insulated asbestos bottom fixed connection's first division board, first division board bottom end face fixedly connected with rack, the left and right sides the second axis of rotation stretches into the lift groove just set firmly with rack toothing's second gear, bilateral symmetry is equipped with the second division board on the terrace die bottom terminal surface, the division board is in sliding connection in the second sliding tray on the organism top end face.

Optionally, the recycling assembly comprises a filter plate arranged between the baffle plate and the second partition plate on the left and right sides and in the end surface of the top of the machine body, the end surface of the bottom of the filter plate is communicated with a backflow groove, and the backflow grooves on the left and right sides are communicated with a liquid return pipe arranged on the top of the end surface of the storage chamber on the opposite side of the left and right sides.

Optionally, the buffering subassembly includes that left and right sides position symmetry locates the flexible groove on the relative side terminal surface of rotor arm, flexible groove with be connected with the spring between the centre gripping arm, the flexible groove upper and lower the symmetry is equipped with the third sliding tray in the rotor arm, sliding connection has set firmly in the third sliding tray on the terminal surface of a side that the centre gripping arm is kept away from each other.

Optionally, the linkage assembly includes a first belt pulley fixed in the first rotating cavity by the first rotating shaft on the left and right sides, a third rotating shaft is connected between the left and right end walls of the bottom of the first rotating cavity on the left and right sides in a rotating manner, a second belt pulley is fixed on the third rotating shaft, a conveyor belt is connected between the second belt pulley and the first belt pulley in a transmission fit manner, one end of the third rotating shaft on the left and right sides opposite to the third rotating shaft extends into a third rotating cavity in the machine body below the hydraulic pump, first bevel gears are symmetrically fixed in the third rotating cavity at one end of the third rotating shaft on the left and right sides opposite to the third rotating shaft, a lifting block is slidably connected in the third rotating cavity, a fourth rotating shaft is rotatably connected on the top end surface of the lifting block, and a second bevel gear capable of meshing with the first bevel gears on the left and right sides is fixed on the, the top end of the third rotating shaft is provided with a third bevel gear, the opposite ends of the left and right sides of the second rotating shaft extend into the third rotating cavity, fourth bevel gears capable of being meshed with the third bevel gear are symmetrically and fixedly arranged on the opposite ends of the second rotating shaft, and the lifting block can move up and down through a lifting assembly to enable the first bevel gear to be meshed with the second bevel gear and the third bevel gear to be meshed with the fourth bevel gear.

Optionally, the lifting assembly comprises a second power motor fixedly arranged on the end face of the bottom of the machine body, the second power motor is connected with a screw rod, and the screw rod is in threaded fit connection with the lifting block.

The invention has the beneficial effects that: the metal plate bending device is simple in structure and convenient to use, when a metal plate is bent, the rotating arms on the two sides can rotate and the sliding blocks can move, the bending angle of a metal plate sheet can be freely selected, the metal plate bending device can be adjusted according to customer requirements, the production and processing range is enlarged, meanwhile, the sliding blocks on the two sides can independently slide, the metal plate sheet can be bent at different positions, the metal plate sheet bending limiting area is reduced, the metal plate can be bent without manpower, the labor cost is reduced, the bending area can be subjected to heat treatment, the phenomenon that the metal plate sheet is rebounded after being bent is avoided, the processing precision is improved, the rejection rate is low, the economic benefit.

Drawings

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a sheet metal material bending machine with heat treatment function according to the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the slider of FIG. 1;

fig. 4 is a left enlarged view of the second rotary chamber of fig. 1.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-4, a sheet metal material bending machine with a heat treatment function according to an embodiment of the present invention includes a machine body 26, wherein baffles 61 are symmetrically disposed on left and right sides of a top end surface of the machine body 26, a male die 41 is disposed between the left and right baffles 61, a heating resistor block 42 capable of heating and softening a bending region of a sheet metal material is disposed on a top of the male die 41, a hydraulic rod 38 is connected to a bottom end surface of the male die 41, a bottom end of the hydraulic rod 38 is connected to a hydraulic pump 37 fixedly disposed in the machine body 26, a cooling assembly for cooling the sheet metal material immediately after bending to prevent the sheet metal material from rebounding after bending is disposed between the left and right baffles 61, a first rotating shaft 13 is rotatably connected between a side end surface of the left and right baffles 61 far away from each other and the machine body 26 on the left and right sides, two threads 12 with opposite rotation directions, the first rotating shafts 13 at the left and right sides are in threaded connection with two slide blocks 11 symmetrically arranged at the left and right sides, the top end surfaces of the opposite sides of the slide blocks 11 at the left and right sides are provided with rotating grooves 51, a rotary drum 50 is rotatably connected in the rotary groove 51, a rotary arm 44 is fixedly arranged on the rotary drum 50, the rotating arm 44 is connected with a clamping arm 46 with opposite clamping openings through a buffer component, a first rotating cavity 52 is symmetrically arranged in the machine body 26 left and right, one end surface of the first rotating shaft 13 at the left side and the right side, which is far away from each other, extends into the first rotating cavity 52 and is fixedly connected with a first power motor 15 arranged on one end wall of the first rotating cavity 52, which is far away from each other, and meanwhile, a linkage assembly which can enable the first rotating shaft 13 to synchronously rotate and drive the cooling assembly to work in the sheet metal bending process is arranged between the left side and the right side of the first rotating cavity 52.

Preferably, the cooling assembly includes spray heads 43 symmetrically fixed on the opposite end surfaces of the left and right baffle plates 61, a storage chamber 18 is symmetrically arranged in the machine body 26, the storage chamber 18 is filled with the cooling liquid 17, the bottom of the opposite end surface of the left and right storage chamber 18 is communicated with a drain pipe 54 connected with the spray heads 43, the drain pipe 54 is provided with a first sliding groove 59 in a front-back penetrating manner, a rack plate 58 is slidably connected in the first sliding groove 59, a through hole 57 capable of being communicated with the drain pipe 54 is arranged in the rack plate 58, the top end surface of the rack plate 58 is communicated with a second rotating chamber 56 arranged in the machine body 26, a second rotating shaft 34 is rotatably connected between the left and right end walls of the second rotating chamber 56, a first gear 60 meshed with the rack plate 58 is fixedly arranged on the second rotating shaft 34, shielding assemblies for preventing the cooling liquid 17 sprayed by the spray heads 43 from splashing are arranged in the baffle plates 61 on the left and right sides, can be right after spraying through a recovery subassembly coolant liquid 17 is retrieved, when terrace die 41 upward movement under the drive of hydraulic pump 37, second axis of rotation 34 rotates, drives rack plate 58 and moves forward, and through-hole 57 and drain pipe 54 switch-on, during coolant liquid 17 got into shower nozzle 43, terrace die 41 accomplished the back lapse of buckling, and shower nozzle 43 blowout coolant liquid 17 cooled off panel beating sheet department of buckling, avoided the panel beating sheet to bounce back.

Preferably, the shielding component comprises storage grooves 27 symmetrically arranged on the left and right sides of the top end face of the baffle 61, heat insulation asbestos 28 is arranged in the storage grooves 27, the bottom end faces of the storage grooves 27 on the left and right sides are communicated with lifting grooves 33, first partition plates 29 fixedly connected with the bottoms of the heat insulation asbestos 27 are slidably connected in the lifting grooves 33, racks 32 are fixedly connected to the bottom end faces of the first partition plates 29, the second rotating shafts 34 on the left and right sides extend into the lifting grooves 33 and are fixedly provided with second gears 31 meshed with the racks 32, second partition plates 40 are symmetrically arranged on the bottom end faces of the male dies 41, the partition plates 40 are slidably connected in the second sliding grooves 39 on the top end face of the machine body 26, and when the second rotating shafts 34 on the left and right sides rotate, the racks 32 on the left and right sides are driven to move upwards, so that the first partition plates 29 on the left and right sides and the male dies 41 move upwards simultaneously, after the punch 41 is reset, the first partition plates 29 are blocked at two sides of the bent part of the sheet metal material, and the cooling liquid 17 is prevented from splashing when the spray head 43 sprays the cooling liquid 17.

Preferably, the recovery assembly comprises a filter plate 30 arranged between the baffle 61 and the second isolation plate 40 at the left and right sides and in the top end surface of the machine body 26, the bottom end surface of the filter plate 30 is communicated with a backflow groove 31, the backflow grooves 31 at the left and right sides are communicated with a liquid return pipe 55 arranged at the top of the end surface at the opposite side of the storage chamber 18 at the left and right sides, and after the spray head 43 sprays the cooling liquid 17, the falling cooling liquid 17 is filtered by the filter plate 30 and then returns to the storage chamber 18.

Preferably, the buffering subassembly includes that left and right sides position symmetry locates the flexible groove 47 on the relative side terminal surface of rotor arm 44, flexible groove 47 with be connected with spring 45 between the centre gripping arm 46, the flexible groove 47 upper and lower the symmetry is equipped with third sliding tray 49 in the rotor arm 44, sliding connection has in the third sliding tray 49 set firmly in connecting rod 48 on the side terminal surface that centre gripping arm 46 kept away from each other, when terrace die 41 rebound bending sheet metal material, both sides slider 11 are close to each other, and rotor arm 44 upwards rotates under the effect of stress, and spring 45 cushions the pressure that the sheet metal edge brought at this in-process, avoids the sheet metal edge to warp, and connecting rod 48 restriction centre gripping arm 46 displacement, supplementary rotor arm 44 turns to at the in-process of buckling.

Preferably, the linkage assembly includes a first belt pulley 14 fixed in the first rotating cavity 52 by the first rotating shaft 13 on the left and right sides, a third rotating shaft 25 rotatably connected between the left and right end walls at the bottom of the first rotating cavity 52 on the left and right sides, a second belt pulley 16 fixed on the third rotating shaft 25, a transmission belt 52 connected between the second belt pulley 16 and the first belt pulley 14 in a transmission fit manner, a third rotating cavity 62 extending into the machine body 26 below the hydraulic pump 37 at the opposite end of the third rotating shaft 25 on the left and right sides, a first bevel gear 19 symmetrically fixed in the third rotating cavity 62 at the opposite end of the third rotating shaft 25 on the left and right sides, a lifting block 21 slidably connected in the third rotating cavity 62, a fourth rotating shaft 20 rotatably connected on the top end surface of the lifting block 21, and a second bevel gear 24 capable of meshing with the first bevel gear 19 on the left and right sides fixed on the third rotating shaft 20, the top end of the third rotating shaft 20 is provided with a third bevel gear 35, the opposite ends of the left and right sides of the second rotating shaft 34 extend into the third rotating cavity 62 and are symmetrically and fixedly provided with fourth bevel gears 36 capable of being meshed with the third bevel gear 35, and the lifting block 21 can move up and down through a lifting assembly to enable the first bevel gear 19 to be meshed with the second bevel gear 24 and the third bevel gear 35 to be meshed with the fourth bevel gears 36.

Preferably, the lifting assembly comprises a second power motor 23 fixedly arranged on the bottom end face of the machine body 26, a screw 22 is connected to the second power motor 23, the screw 22 is in threaded fit connection with the lifting block 21, when the second power motor 23 is started, the screw 22 rotates to drive the lifting block 21 to move upwards, so that the first bevel gear 19 is meshed with the second bevel gear 24, the first power motors 15 on the left side and the right side can respectively control the first rotating shafts 13 on the left side and the right side to rotate, the first rotating shafts 13 on the left side and the right side synchronously rotate in the bending process to clamp two ends of the sheet metal sheet, the sheet metal sheet is prevented from loosening during bending, so that the male die 41 is controlled to bend different positions of the sheet metal sheet, the third bevel gear 35 is meshed with the fourth bevel gear 36, and the cooling assembly and the shielding assembly work along with the rotation of the first.

In an initial state, the liquid outlet pipe 54 is in a closed state, the spring 45 is in an unstressed state, the bottom end face of the rotating arm 44 is abutted to the bottom end face of the rotating groove 51, the sliding blocks 11 on the two sides are far away from each other, and the hydraulic rod 38 is not telescopic.

When a sheet metal material needs to be bent, the heating resistor block 42 is electrified to start preheating, the first power motors 15 on the two sides are started, the sliding blocks 11 on the left side and the right side are moved, the clamping arms 46 are enabled to clamp the sheet metal material, a region of the sheet metal material needing to be bent is selected, the second power motor 23 is started, the first bevel gear 19 is meshed with the second bevel gear 24, the third bevel gear 35 is meshed with the fourth bevel gear 36, the first power motor 15 and the hydraulic pump 37 are started, when the male die 41 moves upwards, the heating resistor block 42 is contacted with a platinum sheet material to heat and soften the region needing to be bent, so that the bending is facilitated, the through hole 57 is communicated with the liquid outlet pipe 54, the cooling liquid 17 enters the spray head 43, the first isolation plate 29 moves upwards synchronously along with the male die 41, and the sliding blocks 11 on the left side and the right side are close to each other, the swinging boom 44 upwards rotates under the stress, the centre gripping arm 46 keeps the tight of clamp to both ends about the panel beating sheet, treats the completion the required angle of panel beating sheet is buckled the back, the work of first motor power 15 pause, terrace die 41 moves down and resets, shower nozzle 43 blowout coolant liquid 17 cools off panel beating sheet department of buckling, avoids the panel beating sheet bounce-back, takes off behind the panel beating sheet, first motor power 15 reverses, makes the mechanism reset.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a panel beating sheet crib crimper with heat treatment function, includes the organism, its characterized in that: the left side and the right side of the end surface of the top of the machine body are symmetrically provided with baffles, a male die is arranged between the baffles on the left side and the right side, the top of the male die is provided with a heating resistance block which can heat and soften the bent area of the sheet metal sheet, the end surface of the bottom of the male die is connected with a hydraulic rod, the bottom end of the hydraulic rod is connected with a hydraulic pump fixedly arranged in the machine body, a cooling component which can immediately cool the sheet metal sheet after being bent to avoid the rebound after bending is arranged between the baffles on the left side and the right side, one end surface of the left side and the right side, which is far away from each other, of the baffles on the left side and the right side, and the machine body on the left side and the right side are rotationally connected with a first rotating shaft, the first rotating shaft on the left side and the right side, the sheet metal sheet bending machine is characterized in that a rotary drum is rotatably connected in the rotary groove, a rotary arm is fixedly arranged on the rotary drum, the rotary arm is connected with a clamping arm with opposite clamping openings through a buffering assembly, first rotary cavities are symmetrically arranged in the machine body in the left and right direction, one side end face, away from each other, of each first rotary shaft on the left and right sides extends into each first rotary cavity and is fixedly connected with a first power motor on one side end wall, away from each other, of each first rotary cavity, and a linkage assembly capable of enabling each first rotary shaft to synchronously rotate and drive a cooling assembly to work in the sheet metal sheet bending process is arranged between each first rotary cavity on the left and right sides.

2. The sheet metal bender with heat treatment function according to claim 1, characterized in that: the cooling assembly comprises spray heads symmetrically arranged on the end faces of the left side and the right side, storage cavities are symmetrically arranged in the machine body, cooling liquid is filled in the storage cavities, liquid outlet pipes connected with the spray heads are communicated with the bottoms of the end faces of the left side and the right side, first sliding grooves penetrate through the front and the back of the liquid outlet pipes, rack plates are connected in the first sliding grooves in a sliding mode, through holes capable of being communicated with the liquid outlet pipes are formed in the rack plates, the top end faces of the rack plates are communicated with a second rotating cavity arranged in the machine body, a second rotating shaft is rotatably connected between the left end wall and the right end wall of the second rotating cavity, first gears meshed with the rack plates are fixedly arranged on the second rotating shaft, shielding assemblies for preventing the cooling liquid sprayed by the spray heads from splashing are arranged in the baffle plates of the left side and the right side, and after spraying is finished, the cooling liquid can be recovered through a recovery assembly.

3. The sheet metal bender with heat treatment function according to claim 2, characterized in that: shelter from the subassembly and include bilateral symmetry and locate the left and right sides the groove of accomodating on the baffle top end face, accomodate and be equipped with thermal-insulated asbestos in the groove, the left and right sides accomodate tank bottom terminal surface switch-on lift groove, sliding connection has in the lift groove with thermal-insulated asbestos bottom fixed connection's first division board, first division board bottom end face fixedly connected with rack, the left and right sides the second axis of rotation stretches into the lift groove just set firmly with rack toothing's second gear, bilateral symmetry is equipped with the second division board on the terrace die bottom terminal surface, the division board is in sliding connection in the second sliding tray on the organism top end face.

4. The sheet metal bender with heat treatment function according to claim 2, characterized in that: the recycling assembly comprises filter plates arranged on the left side and the right side between the baffle and the second partition plate and in the end face of the top of the machine body, the end face of the bottom of each filter plate is communicated with a backflow groove, and the backflow grooves on the left side and the right side are communicated with liquid return pipes arranged on the top of the end face of one side, opposite to the storage cavity, of the left side and the right side.

5. The sheet metal bender with heat treatment function according to claim 1, characterized in that: the buffering subassembly includes that left and right sides position symmetry locates the flexible groove on the relative side terminal surface of rotor arm, flexible groove with be connected with the spring between the centre gripping arm, the flexible groove upper and lower the symmetry is equipped with the third sliding tray in the rotor arm, sliding connection has set firmly in the third sliding tray the connecting rod on the side terminal surface that the centre gripping arm was kept away from each other.

6. The sheet metal bender with heat treatment function according to claim 1, characterized in that: the linkage assembly comprises first belt pulleys fixedly arranged in the first rotating cavity by the first rotating shafts on the left side and the right side, a third rotating shaft is rotatably connected between the left end wall and the right end wall of the bottom of the first rotating cavity on the left side and the right side, a second belt pulley is fixedly arranged on the third rotating shaft, a conveying belt is connected between the second belt pulley and the first belt pulley in a transmission fit manner, one opposite end of the third rotating shaft on the left side and the right side extends into a third rotating cavity in the machine body below the hydraulic pump, first bevel gears are symmetrically and fixedly arranged in the third rotating cavity at one opposite end of the third rotating shaft on the left side and the right side, a lifting block is slidably connected in the third rotating cavity, a fourth rotating shaft is rotatably connected on the top end surface of the lifting block, and second bevel gears capable of being meshed with the first bevel gears on the left side and the right side are, the top end of the third rotating shaft is provided with a third bevel gear, the opposite ends of the left and right sides of the second rotating shaft extend into the third rotating cavity, fourth bevel gears capable of being meshed with the third bevel gear are symmetrically and fixedly arranged on the opposite ends of the second rotating shaft, and the lifting block can move up and down through a lifting assembly to enable the first bevel gear to be meshed with the second bevel gear and the third bevel gear to be meshed with the fourth bevel gear.

7. The sheet metal bender with heat treatment function according to claim 1, characterized in that: the lifting assembly comprises a second power motor fixedly arranged on the end face of the bottom of the machine body, a screw rod is connected onto the second power motor, and the screw rod is in threaded fit connection with the lifting block.