CN109676020B

CN109676020B - A punching press turn-up device for producing lampblack absorber screen panel

Info

Publication number: CN109676020B
Application number: CN201811611858.6A
Authority: CN
Inventors: 杨位芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-04-07
Anticipated expiration: 2038-12-27
Also published as: CN109676020A

Abstract

The invention discloses a stamping and crimping device for producing a range hood mesh enclosure, which comprises a fixing device, a stamping device and a crimping device, wherein the fixing device comprises a supporting plate and an operating platform, a cover body, an operating plate and a limiting device are arranged on the operating platform, the cover body comprises a rear side plate, a vertical plate and a top plate, the stamping device comprises an upper die assembly, a lower die and a driving device, the limiting device comprises a fixing platform and a limiting clamping plate, an installation groove is formed in the fixing platform, and the lower die is installed in the installation groove; utilize the punch press to carry out the punching press to screen panel processing board and make an organic whole shaping, guarantee the roughness and the aesthetic property of screen panel, can carry out the interior roll effect to the screen panel that the punching press was accomplished through the turn-up device, make the bottom side formula of screen panel have interior roll formula oil sump utensil, realized the variety of punch press function, more have simultaneously to the screen panel process, practiced thrift equipment investment cost and area, realized that same work load needs labour cost still less.

Description

A punching press turn-up device for producing lampblack absorber screen panel

Technical Field

The invention belongs to the technical field of pressure equipment, and particularly relates to a stamping and curling device for producing a mesh enclosure of a range hood.

Background

The punching machine, the stamping press promptly, in national production, stamping process is owing to have material saving and energy than traditional machining, and is efficient, and is not high to operator's technical requirement and can make the product that machining can't reach through various mould applications, and stamping production is mainly to panel, through the cooperation use with the mould, can make blanking, punching a hole, shaping, drawing, trimming, essence towards, plastic, riveting and extruded article etc. wide application in each field.

The mesh enclosure of the range hood is mainly composed of an outer shield of a range hood motor and a decorative strip connected to the outer shield, the attractive force of different appearances to oil smoke is different, the suction-type ratio is better than the arc-type, the mesh enclosure of the range hood is made of stainless steel, the mesh enclosure is durable and convenient to clean, a certain inclination angle and depth are formed by a punching machine in the prior art, then an oil collecting tank is connected to the bottom of the mesh enclosure, but a great amount of oil stains can be accumulated on the connecting part and the gap between the mesh enclosure and the oil collecting tank produced by the method and cannot be removed, and particularly after the mesh enclosure and the oil collecting tank are used for a long time, the mesh enclosure and the oil collecting tank can.

Disclosure of Invention

The invention aims to provide a technical scheme of a stamping and curling device for producing a screen of a range hood, aiming at the defects in the prior art, the screen processing plate is stamped by a punch to be integrally formed, the flatness and the attractiveness of the screen are ensured, the stamped screen can be curled inwards by the curling device, so that the side edge of the bottom of the screen has an inwards-curled oil collecting groove, the diversity of functions of the punch is realized, meanwhile, the screen is more specifically processed, the equipment investment cost and the occupied area are saved, and the same workload and the labor cost are reduced.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a punching press turn-up device for producing lampblack absorber screen panel, includes fixing device and stamping device, its characterized in that: the device comprises a support plate, a fixing device and a limiting device, wherein the operation table is fixedly arranged above the support plate through a stud, a cover body, an operation plate and the limiting device are arranged on the operation table, the cover body comprises a rear side plate, a vertical plate and a top plate, the stamping device comprises an upper die assembly, a lower die and a driving device, the driving device is arranged on the top plate, the limiting device is arranged on the operation plate and comprises a fixing table and a limiting clamping plate, two ends of the fixing table are fixedly connected with extension plates, the extension plates are fixedly connected with the operation table, a mounting groove is formed in the fixing table, the lower die is arranged in the mounting groove, mounting through holes are formed in the left side wall and the right side wall of the fixing table, limiting support groups are arranged on the mounting through holes, the limiting clamping plate is fixedly connected with the fixing table, locking parts are arranged, the fixing frame is arranged on the rear side plate, the rotating structure is respectively and fixedly connected with the clamping plate and the fixing frame, and the clamping plate is arranged on the rotating structure; the fixing device provides mounting positions for the curling device and each structure of the punching device, the supporting plate plays a supporting role for the whole device, the operating platform is used for placing various parts, each device is more operable, a steel plate placed on the fixing platform is punched, the steel plate can be punched into a net cover structure with a specific shape through the combined action of the upper die and the lower die, the cover body can cover the device to a certain degree, dust can be prevented from falling on the device, the injury caused by splashing of scraps generated during punching can also be prevented, the limiting device is used for limiting the punching steel plate, the steel plate is placed at a fixed position of the fixing platform to wait for punching, the production accuracy is facilitated, the rear side plate is used for mounting the curling device and provides a supporting role for the top plate, the vertical plate plays a supporting role for the top plate, and the stress balance of the rear side plate is ensured, the whole is more stable, the driving device can provide certain pressure for the upper die assembly, the upper die assembly can be punched downwards at a certain pressure speed, the smooth punching effect is fully ensured, the extension plate is fixedly connected with the fixed station, the fixed connection between the fixed station and the operation station is ensured through the fixed connection between the extension plate and the operation station, the fixed station can be ensured to be fixed under the effects of the punching device and the curling device, the production standardization of the mesh enclosure is ensured, the lower die is completely installed in the installation groove, part of steel plates positioned outside the fixed station can be flattened and keep higher aesthetic degree through the butt joint of the pressing plate of the upper die assembly and the upper side surface of the fixed station, the lower die can be fixed in the installation groove through the limiting support group, the lower die has enough strength to bear the pressure of the upper die assembly without being damaged, and the locking part plays a certain locking effect on the steel plates placed on the fixed station, prevent that the unordered deformation of steel sheet from influencing the use, the crimping device carries out work after stamping device work is accomplished, after stamping device work, keep the pressure of mould subassembly to the fixed station, make clamp plate and fixed station closely laminate, rotate through motor control revolution mechanic, splint overturn to fixed station one side under revolution mechanic's effect, the in-process of upset can make the steel sheet on the splint take place to warp to one side base of realization screen panel upwards curls and forms the oil trap.

Further, the rear side plate and the vertical plate are fixedly arranged on the operating platform, the top plate is arranged at the top of the rear side plate and fixedly connected with the rear side plate, the rear side plate is provided with cutting through holes, and the fixing frame penetrates through the cutting through holes and is fixed on the rear side plate; the rear side plate and the vertical plate are connected to the operating platform, the operating space of the operating platform is built, the top plate plays a supporting role, the curling device is installed on the rear side plate through cutting and punching holes, and the curling device is connected with the motor.

Further, the upper die assembly penetrates through the top plate to be connected with the driving device, the upper die assembly comprises a fixing column, an upper die and a pressing plate, the fixing column penetrates through the top plate, and the top of the fixing column is connected with the driving device; the upper die assembly is powered by the driving device, and the fixing column can move up and down, so that the upper die and the pressing plate are driven to move up and down.

Furthermore, the bottom of the fixed column is connected with a pressing plate, an upper die is fixedly connected below the pressing plate, and the size of the pressing plate is larger than that of the upper die; the upper die is matched with the lower die and used for stamping the steel plate placed on the fixed table into a shape with a certain angle under the power action of the driving device, and the pressing plate can flatten the steel plate outside the upper die.

Furthermore, two limiting support groups are arranged, the limiting support groups are symmetrically arranged relative to the fixed station, each limiting support group comprises a limiting support, a threaded rod and an upright post, the bottom of the upright post is fixedly connected with the operating platform, the upright post is vertically connected with the threaded rod, the end part of the threaded rod is fixedly connected with the limiting support, and the size of the limiting support is matched with that of the mounting through hole; the limiting support group is used for fixing the lower die, adjusting the threaded rods, enabling the limiting supports to completely move out of the fixing table, then installing the lower die in the installation groove of the fixing table, enabling the limiting supports to move towards the inside of the fixing table along the horizontal direction from the two sides of the adjusting threaded rods respectively, and clamping the lower die from the two sides until the limiting supports, so that the stability of the lower die is guaranteed during stamping.

Furthermore, a supporting groove is formed in the limiting support, baffle plates are arranged at two ends of the lower die and clamped in the supporting groove, and the size of the lower die is matched with that of the mounting groove; the supporting groove is used for supporting the baffle plate of the lower die, so that the lower die is firmly arranged in the fixing table.

Further, the locking piece comprises a lower transverse plate, an upper transverse plate and an adjusting column, the lower transverse plate is fixedly connected with the limiting clamping plate, the adjusting column penetrates through the lower transverse plate to be connected with the upper transverse plate, and the height of the upper surface of the lower transverse plate is consistent with that of the surface of the fixed table; the locking plate is arranged at the rear part of the fixing table, and can properly clamp the steel plate exceeding the fixing table before stamping, so that the situation that the position of the steel plate is changed during stamping to cause irregular shape of the stamped mesh enclosure to influence use is prevented.

Further, the rotating structure comprises a rotating rod and a connecting plate, the connecting plate is fixedly connected with the rotating rod, the rotating rod penetrates through the fixing frame, the clamping plate is fixedly arranged on the connecting plate, and the clamping plate and the fixing platform are kept horizontal; the rotary rod is connected with the motor, can load rotatoryly, and the connecting plate can be fixed splint on the rotary rod, makes splint can follow the rotary rod and carry out the upset of certain angle.

Due to the adoption of the technical scheme, the invention has the following beneficial effects: the fixing device provides mounting positions for the curling device and each structure of the punching device, the supporting plate plays a supporting role for the whole device, the operating platform is used for placing various parts, each device is more operable, a steel plate placed on the fixing platform is punched, the steel plate can be punched into a net cover structure with a specific shape through the combined action of the upper die and the lower die, the cover body can cover the device to a certain degree, dust can be prevented from falling on the device, the injury caused by splashing of scraps generated during punching can also be prevented, the limiting device is used for limiting the punching steel plate, the steel plate is placed at a fixed position of the fixing platform to wait for punching, the production accuracy is facilitated, the rear side plate is used for mounting the curling device and provides a supporting role for the top plate, the vertical plate plays a supporting role for the top plate, and the stress balance of the rear side plate is ensured, the whole is more stable, the driving device can provide certain pressure for the upper die assembly, the upper die assembly can be punched downwards at a certain pressure speed, the smooth punching effect is fully ensured, the extension plate is fixedly connected with the fixed station, the fixed connection between the fixed station and the operation station is ensured through the fixed connection between the extension plate and the operation station, the fixed station can be ensured to be fixed under the effects of the punching device and the curling device, the production standardization of the mesh enclosure is ensured, the lower die is completely installed in the installation groove, part of steel plates positioned outside the fixed station can be flattened and keep higher aesthetic degree through the butt joint of the pressing plate of the upper die assembly and the upper side surface of the fixed station, the lower die can be fixed in the installation groove through the limiting support group, the lower die has enough strength to bear the pressure of the upper die assembly without being damaged, and the locking part plays a certain locking effect on the steel plates placed on the fixed station, prevent that the unordered deformation of steel sheet from influencing the use, the crimping device carries out work after stamping device work is accomplished, after stamping device work, keep the pressure of mould subassembly to the fixed station, make clamp plate and fixed station closely laminate, rotate through motor control revolution mechanic, splint overturn to fixed station one side under revolution mechanic's effect, the in-process of upset can make the steel sheet on the splint take place to warp to one side base of realization screen panel upwards curls and forms the oil trap.

The invention provides a technical scheme of a stamping and curling device for producing a screen of a range hood, which is characterized in that a screen processing plate is stamped by a punch to be integrally formed, so that the flatness and the attractiveness of the screen are ensured, the stamped screen can be curled inwards by the curling device, so that the side edge of the bottom of the screen is provided with an inward-curling oil collecting tank, the function diversity of the punch is realized, meanwhile, the screen is processed more specifically, the equipment investment cost and the occupied area are saved, and the same workload is realized with less labor cost.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of a stamping and curling device for producing a range hood guard of the present invention;

FIG. 2 is a schematic view of the connection between the position-limiting support set and the fixing table according to the present invention;

FIG. 3 is a schematic view of the attachment of the curling device to the retaining member in accordance with the present invention;

FIG. 4 is a schematic view of the installation of the lower mold and the position-limiting bracket set in the present invention;

FIG. 5 is a schematic view of the installation of the limiting catch plate and the locking member of the present invention.

In the figure: 1-a fixture; 2-a stamping device; 3-a crimping device; 4-a support plate; 5-an operation table; 6-cover body; 7-an operation panel; 8-a conditioning column; 9-rear side plate; 10-standing a plate; 11-a top plate; 12-a fixing frame; 13-a rotating structure; 14-a splint; 15-upper die assembly; 16-lower mould; 17-a drive device; 18-a stationary table; 19-a limit clamping plate; 20-an elongated plate; 21-mounting grooves; 22-a baffle; 23-a limit support group; 24-a locking member; 25-rotating rod; 26-a connecting plate; 27-fixed columns; 28-upper mould; 29-a platen; 30-limiting support; 31-a threaded rod; 32-upright post; 33-a support groove; 34-a lower transverse plate; 35-Upper transverse plate.

Detailed Description

As shown in fig. 1 to 5, the stamping and curling device for producing a mesh enclosure of a range hood of the present invention comprises a fixing device 1, a stamping device 2 and a curling device 3, wherein the fixing device 1 comprises a support plate 4 and an operating platform 5, the operating platform 5 is fixedly mounted above the support plate 4 through a stud, the operating platform 5 is provided with a cover body 6, an operating plate 7 and a limiting device, the cover body 6 comprises a rear side plate 9, a vertical plate 10 and a top plate 11, the stamping device 2 comprises an upper die assembly 15, a lower die 16 and a driving device 17, the driving device 17 is mounted on the top plate 11, the limiting device is mounted on the operating plate 7, the limiting device comprises a fixing platform 18 and a limiting clamping plate 19, two ends of the fixing platform 18 are fixedly connected with extension plates 20, the extension plates 20 are fixedly connected with the operating platform 5, a mounting groove 21 is formed inside the fixing platform 18, the lower die 16 is, the left side wall and the right side wall of the fixed table 18 are respectively provided with an installation through hole, a limiting support group 23 is installed on the installation through holes, a limiting clamping plate 19 is fixedly connected with the fixed table 18, a locking piece 24 is arranged on the limiting clamping plate 19, the curling device 3 comprises a fixed frame 12, a rotating structure 13 and a clamping plate 14, the fixed frame 12 is installed on the rear side plate 9, the rotating structure 13 is respectively fixedly connected with the clamping plate 14 and the fixed frame 12, and the clamping plate 14 is installed on the rotating structure 13; the fixing device 1 provides installation positions for structures of the curling device 3 and the punching device 2, the supporting plate 4 plays a supporting role for the whole device, the operating platform 5 is used for placing various parts, so that the devices have operability, a steel plate placed on the fixing platform 18 is punched, the steel plate can be punched into a mesh enclosure structure with a specific shape through the combined action of the upper die 28 and the lower die 16, the mesh enclosure structure can cover the device to a certain extent by the mesh enclosure 6, dust can be prevented from falling on the device, scraps generated during punching can be prevented from splashing to cause injury, the limiting device is used for limiting the punched steel plate, the steel plate is placed at a fixed position of the fixing platform 18 to wait for punching, the precision of production is facilitated, the rear side plate 9 is used for installing the curling device 3 and providing a supporting role for the top plate 11, and the vertical plate 10 plays a supporting role for the top plate 11, the stress balance of the rear side plate 9 is ensured, the whole body is more stable, the driving device 17 can provide certain pressure for the upper die assembly 15, the upper die assembly 15 can be punched downwards at certain pressure speed, the smooth punching action is fully ensured, the extension plate 20 is fixedly connected with the fixed table 18, the fixed table 18 is fixedly connected with the operating table 5 through the extension plate 20, the fixed connection of the fixed table 18 and the operating table 5 is ensured, the fixed table 18 can be ensured to be fixed under the action of the punching device 2 and the curling device 3, the normative of mesh enclosure production is ensured, the lower die 16 is completely installed in the installation groove 21, a part of steel plate positioned outside the fixed table 18 can be flattened and keep higher aesthetic degree through the butt joint of the pressing plate 29 of the upper die assembly 15 and the upper side surface of the fixed table 18, the lower die 16 can be fixed in the installation groove 21 through the limiting support group 23, make the bed die 16 have enough intensity and bear the pressure of last mould subassembly 15 and not destroyed, retaining member 24 plays the locking effect of certain degree to the steel sheet of placing on fixed station 18, prevent that the unordered deformation of steel sheet from influencing the use, crimping device 3 works after stamping device 2 work is accomplished, after stamping device 2 work, keep the pressure of last mould subassembly 15 to fixed station 18, make clamp plate 29 and fixed station 18 closely laminate, it is rotatory to control revolution mechanic 13 through the motor, splint 14 overturns to fixed station 18 one side under revolution mechanic 13's effect, the in-process of upset can make the steel sheet on splint 14 take place to warp, thereby realize that one side base of screen panel upwards curls and forms the oil trap. The rear side plate 9 and the vertical plate 10 are both fixedly arranged on the operating platform 5, the top plate 11 is arranged at the top of the rear side plate 9, the top plate 11 is fixedly connected with the rear side plate 9, the rear side plate 9 is provided with cutting through holes, and the fixing frame 12 penetrates through the cutting through holes and is fixed on the rear side plate 9; the rear side plate 9 and the vertical plate 10 are connected to the operating platform 5, an operating space of the operating platform 5 is built, meanwhile, a top plate 11 plays a supporting role, and the crimping device 3 is installed on the rear side plate 9 through cutting and punching holes, so that the crimping device 3 is connected with a motor. The upper die assembly 15 penetrates through the top plate 11 to be connected with the driving device 17, the upper die assembly 15 comprises a fixing column 27, an upper die 28 and a pressing plate 29, the fixing column 27 penetrates through the top plate 11, and the top of the fixing column 27 is connected with the driving device 17; the upper die assembly 15 is powered by the driving device 17, and the fixing post 27 can move up and down, so that the upper die 28 and the pressing plate 29 are driven to move up and down. The bottom of the fixed column 27 is connected with a pressing plate 29, an upper die 28 is fixedly connected below the pressing plate 29, and the size of the pressing plate 29 is larger than that of the upper die 28; the upper die 28 is matched with the lower die 16 and used for stamping the steel plate placed on the fixed table 18 into a shape with a certain angle under the power action of the driving device 17, and the pressing plate 29 can flatten the steel plate on the outer side of the upper die 28. The limiting support groups 23 are arranged in two groups, the limiting support groups 23 are symmetrically arranged relative to the fixed table 18, each limiting support group 23 comprises a limiting support 30, a threaded rod 31 and an upright post 32, the bottom of the upright post 32 is fixedly connected with the operating table 5, the upright post 32 is vertically connected with the threaded rod 31, the end part of the threaded rod 31 is fixedly connected with the limiting support 30, and the size of the limiting support 30 is matched with that of the installation through hole; the limiting support group 23 is used for fixing the lower die 16, adjusting the threaded rods 31 to enable the limiting supports 30 to completely move out of the fixing table 18, then the lower die 16 is installed in the installation groove 21 of the fixing table 18, then the limiting supports 30 are enabled to move towards the inside of the fixing table 18 along the horizontal direction respectively through the adjusting threaded rods 31 on two sides until the limiting supports 30 clamp the lower die 16 from two sides, and stability of the lower die 16 during stamping is guaranteed. A supporting groove 33 is formed in the limiting support 30, baffle plates 22 are arranged at two ends of the lower die 16, the baffle plates 22 are clamped in the supporting groove 33, and the size of the lower die 16 is matched with that of the mounting groove 21; the supporting groove 33 is used to support the baffle 22 of the lower mold 16, so that the lower mold 16 is firmly installed in the fixing table 18. The locking piece 24 comprises a lower transverse plate 34, an upper transverse plate 35 and an adjusting column 8, the lower transverse plate 34 is fixedly connected with the limiting clamping plate 19, the adjusting column 8 penetrates through the lower transverse plate 34 to be connected with the upper transverse plate 35, and the height of the upper surface of the lower transverse plate 34 is consistent with that of the surface of the fixed table 18; the locking plate is arranged behind the fixing table 18, and can properly clamp the steel plate which exceeds the fixing table 18 before stamping, so that the situation that the position of the steel plate is changed during stamping to cause irregular shape of a stamped mesh enclosure to influence use is prevented. The rotating structure 13 comprises a rotating rod 25 and a connecting plate 26, the connecting plate 26 is fixedly connected with the rotating rod 25, the rotating rod 25 penetrates through the fixing frame 12, the clamping plate 14 is fixedly arranged on the connecting plate 26, and the clamping plate 14 and the fixing platform 18 are kept horizontal; the rotating rod 25 is connected with a motor and can rotate under load, and the connecting plate 26 can fix the clamping plate 14 on the rotating rod 25, so that the clamping plate 14 can turn over at a certain angle along with the rotating rod 25.

Due to the adoption of the technical scheme, the invention has the following beneficial effects: the fixing device 1 provides installation positions for structures of the curling device 3 and the punching device 2, the supporting plate 4 plays a supporting role for the whole device, the operating platform 5 is used for placing various parts, so that the devices have operability, a steel plate placed on the fixing platform 18 is punched, the steel plate can be punched into a mesh enclosure structure with a specific shape through the combined action of the upper die 28 and the lower die 16, the mesh enclosure structure can cover the device to a certain extent by the mesh enclosure 6, dust can be prevented from falling on the device, scraps generated during punching can be prevented from splashing to cause injury, the limiting device is used for limiting the punched steel plate, the steel plate is placed at a fixed position of the fixing platform 18 to wait for punching, the precision of production is facilitated, the rear side plate 9 is used for installing the curling device 3 and providing a supporting role for the top plate 11, and the vertical plate 10 plays a supporting role for the top plate 11, the stress balance of the rear side plate 9 is ensured, the whole body is more stable, the driving device 17 can provide certain pressure for the upper die assembly 15, the upper die assembly 15 can be punched downwards at certain pressure speed, the smooth punching action is fully ensured, the extension plate 20 is fixedly connected with the fixed table 18, the fixed table 18 is fixedly connected with the operating table 5 through the extension plate 20, the fixed connection of the fixed table 18 and the operating table 5 is ensured, the fixed table 18 can be ensured to be fixed under the action of the punching device 2 and the curling device 3, the normative of mesh enclosure production is ensured, the lower die 16 is completely installed in the installation groove 21, a part of steel plate positioned outside the fixed table 18 can be flattened and keep higher aesthetic degree through the butt joint of the pressing plate 29 of the upper die assembly 15 and the upper side surface of the fixed table 18, the lower die 16 can be fixed in the installation groove 21 through the limiting support group 23, make the bed die 16 have enough intensity and bear the pressure of last mould subassembly 15 and not destroyed, retaining member 24 plays the locking effect of certain degree to the steel sheet of placing on fixed station 18, prevent that the unordered deformation of steel sheet from influencing the use, crimping device 3 works after stamping device 2 work is accomplished, after stamping device 2 work, keep the pressure of last mould subassembly 15 to fixed station 18, make clamp plate 29 and fixed station 18 closely laminate, it is rotatory to control revolution mechanic 13 through the motor, splint 14 overturns to fixed station 18 one side under revolution mechanic 13's effect, the in-process of upset can make the steel sheet on splint 14 take place to warp, thereby realize that one side base of screen panel upwards curls and forms the oil trap.

The invention provides a technical scheme of a stamping and curling device for producing a screen of a range hood, which is characterized in that a screen processing plate is stamped by a punch to be integrally formed, so that the flatness and the attractiveness of the screen are ensured, the stamped screen can be curled inwards by a curling device 3, so that the side of the bottom of the screen is provided with an inward-curling oil collecting tank, the diversity of functions of the punch is realized, the screen is processed more specifically, the equipment investment cost and the occupied area are saved, and the same workload is realized with less labor cost.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.

Claims

1. The utility model provides a punching press turn-up device for producing lampblack absorber screen panel, includes fixing device and stamping device, its characterized in that: the stamping device comprises an upper die assembly, a lower die and a driving device, the driving device is installed on the top plate, the limiting device is installed on the operating plate, the limiting device comprises a fixed table and a limiting clamping plate, two ends of the fixed table are fixedly connected with extension plates, the extension plates are fixedly connected with the operating table, an installation groove is formed inside the fixed table, the lower die is installed in the installation groove, installation through holes are formed in the left side wall and the right side wall of the fixed table, limiting support groups are installed on the installation through holes, and the limiting clamping plate is fixedly connected with the fixed table, the limiting clamping plate is provided with a locking piece, the curling device comprises a fixing frame, a rotating structure and a clamping plate, the fixing frame is installed on the rear side plate, and the rotating structure is fixedly connected with the clamping plate and the fixing frame respectively.

2. The stamping and curling device for producing the range hood cover according to claim 1, wherein: the rear side plate and the vertical plate are fixedly arranged on the operating table, the top plate is arranged at the top of the rear side plate and fixedly connected with the rear side plate, a cutting through hole is formed in the rear side plate, and the fixing frame penetrates through the cutting through hole and is fixed on the rear side plate.

3. The stamping and curling device for producing the range hood cover according to claim 1, wherein: the upper die assembly penetrates through the top plate to be connected with the driving device, the upper die assembly comprises a fixing column, an upper die and a pressing plate, the fixing column penetrates through the top plate, and the top of the fixing column is connected with the driving device.

4. The stamping and curling device for producing the range hood cover according to claim 3, wherein: the bottom of fixed column is connected with the clamp plate, the below fixedly connected with of clamp plate go up the mould, the clamp plate size is greater than the size of last mould.

5. The stamping and curling device for producing the range hood cover according to claim 1, wherein: the utility model discloses a spacing support of a job practice platform, including the fixed station, spacing support group is provided with two sets ofly altogether, spacing support group about the fixed station symmetrical arrangement, spacing support group is including spacing support, threaded rod and stand, the bottom of stand with operation panel fixed connection, the stand with the threaded rod is connected perpendicularly, the tip of threaded rod with spacing support fixed connection, the size that spacing held in the palm with the fenestrate size phase-match of installation.

6. The stamping and curling device for producing the range hood cover according to claim 5, wherein: the limiting support is provided with a supporting groove, the two ends of the lower die are provided with baffle plates, the baffle plates are clamped in the supporting groove, and the size of the lower die is matched with that of the mounting groove.

7. The stamping and curling device for producing the range hood cover according to claim 1, wherein: the locking piece comprises a lower transverse plate, an upper transverse plate and an adjusting column, the lower transverse plate is fixedly connected with the limiting clamping plate, the adjusting column penetrates through the lower transverse plate to be connected with the upper transverse plate, and the height of the upper surface of the lower transverse plate is consistent with that of the surface of the fixing table.

8. The stamping and curling device for producing the range hood cover according to claim 1, wherein: revolution mechanic includes rotary rod and connecting plate, the connecting plate with rotary rod fixed connection, the rotary rod passes the mount, splint fixed mounting be in on the connecting plate, splint with the fixed station keeps the level.