CN114192667A

CN114192667A - Bending wrap angle equipment for refrigerator door shell

Info

Publication number: CN114192667A
Application number: CN202210141665.9A
Authority: CN
Inventors: 曹志军
Original assignee: Yanghan Cool Chain System Jiangsu Co ltd
Current assignee: Yanghan Cool Chain System Jiangsu Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-03-18
Anticipated expiration: 2042-02-16
Also published as: CN114192667B

Abstract

The invention belongs to the technical field of refrigerator door shell bending, and particularly provides a bending wrap angle device for a refrigerator door shell. According to the refrigerator door shell bending device, the third hydraulic cylinder, the limiting plate and the limiting roller are arranged, when the refrigerator door shell is bent, the bending knife is used for extruding and bending, the first air cylinder is adjusted to drive the limiting roller to move to the upper side of the refrigerator door shell, the third hydraulic cylinder is adjusted to drive the limiting roller to be in contact with the refrigerator door shell, the lower side of the refrigerator door shell is limited through the limiting rollers, bending deformation of the refrigerator door shell in the bending process is prevented, meanwhile, the extrusion limiting mode is drum-type extrusion, and damage to the refrigerator door shell is reduced.

Description

Bending wrap angle equipment for refrigerator door shell

Technical Field

The invention relates to the technical field of refrigerator door shell bending equipment, in particular to a bending wrap angle device for a refrigerator door shell.

Background

The refrigerator door shell is an essential part of a refrigerator, a high-end refrigerator generally adopts a hidden end cover, a mechanism of the refrigerator door shell is more complex than that of a common refrigerator, flanges at ends and other positions are increased, the refrigerator door shell is generally manufactured through four processes of blanking, flanging, U-shaped bending (bending) and corner wrapping, the process is longer, the production efficiency is low, and the four processes are respectively completed by adopting a blanking die, a flanging die, a U-shaped bending die and a corner wrapping die.

The refrigerator door shell is characterized in that the end part of the existing refrigerator door shell is subjected to wrap angle treatment through a wrap angle mould in the bending process, so that the shape of the bent end part is the same as that of the wrap angle mould, but the existing wrap angle mould is generally an independent moulding structure.

Disclosure of Invention

Based on the fact that the end of the refrigerator door shell is subjected to wrap angle treatment through a wrap angle die in the bending process of the existing refrigerator door shell, the shape of the bent end is the same as that of the wrap angle die, but the existing wrap angle die is generally an independent molding structure, the refrigerator door shell is extruded to the wrap angle die through a bending knife in the bending process, a rigid wrap angle extruding mode is adopted, the refrigerator door shell is easy to damage, meanwhile, after the refrigerator door shell end molded through the wrap angle die is taken out of the wrap angle die, the bending position of the refrigerator door shell is easy to deform and reset, the bending wrap angle die only can achieve a transient molding effect, the bent end cannot be permanently molded, and the use value of the bending wrap angle die is reduced.

The invention provides bending and angle wrapping equipment for a refrigerator door shell, which comprises an L-shaped operating platform, wherein one side outer wall of the L-shaped operating platform is fixedly connected with a bending limiting frame, the outer wall of the bending limiting frame is fixedly connected with an angle wrapping plate, the outer wall of the angle wrapping plate positioned above and the outer wall of the angle wrapping plate positioned below are both connected with side edge molding plates through hinges, one side outer wall of the bending limiting frame is fixedly connected with a bottom supporting plate, the bottom supporting plate and the outer wall of the L-shaped operating platform are equally and fixedly connected with a first hydraulic cylinder, the other end of the first hydraulic cylinder is connected with the outer wall of the corresponding side edge molding plate through a hinge, the outer walls of the two side edge molding plates are both fixedly connected with heating frames, the inner walls of the two heating frames are equally and fixedly connected with electric heating pipes, the outer wall of the bending limiting frame is fixedly connected with side rods, and the outer walls of the tops of the side rods are fixedly connected with mounting rods, the outer wall fixedly connected with pneumatic cylinder No. two of installation pole, the outer wall fixedly connected with of pneumatic cylinder No. two promotes the piece, the outer wall fixedly connected with electric heating sword that promotes the piece, and the outer wall equidistance of electric heating sword is equipped with the nick blade, and the electric heating sword contacts with the top outer wall of package scute.

Preferably, the top outer wall fixedly connected with support frame of L type operation panel, and one side outer wall fixedly connected with cylinder No. two of support frame, the same connecting plate of outer wall fixedly connected with of cylinder No. two.

Preferably, the outer wall of connecting plate equidistance fixedly connected with link, and the equal fixedly connected with pneumatic cylinder No. three of the outer wall of every link, the same limiting plate of bottom outer wall fixedly connected with of a plurality of pneumatic cylinders No. three.

Preferably, the equal distance fixedly connected with axle piece in bottom outer wall both ends of limiting plate, and the relative one side outer wall of every two corresponding axle pieces is connected with same connecting axle through the bearing, and the outer wall fixedly connected with spacing roller of connecting axle.

Preferably, the outer wall that L type operation panel is close to the top has the adjusting frame through hinge connection, and the bottom outer wall equidistance fixedly connected with adjusting spring of adjusting frame, adjusting spring fixed connection in one side outer wall of L type operation panel, the equal fixedly connected with fixed block in top outer wall both ends of adjusting frame.

Preferably, two the same fixed plate of relative one side outer wall fixedly connected with of fixed block, and the bottom outer wall equidistance fixedly connected with pneumatic cylinder No. four of fixed plate, the same regulating plate of bottom outer wall fixedly connected with of a plurality of pneumatic cylinders No. four, the bottom outer wall of regulating plate has two stripper plates through hinge connection, the equal distance fixedly connected with extrusion spring of relative one side outer wall of two stripper plates and regulating plate, the equal distance fixedly connected with friction disc of the bottom outer wall of two stripper plates.

Preferably, the outer wall of one side of the L-shaped operating platform is fixedly connected with two side frames, the outer walls of the two side frames are fixedly connected with two cylinders, the outer walls of the bottoms of the two cylinders are fixedly connected with the same L-shaped frame, and two ends of the outer wall of the bottom of the L-shaped frame are fixedly connected with the shaft plate.

Preferably, two the relative one side outer wall of axostylus axostyle is connected with same pivot through the bearing, and the outer wall fixedly connected with upset squeeze roll of pivot, and the upset squeeze roll is three-quarter cylinder structure, and the inner wall fixedly connected with stationary blade of upset squeeze roll, the outer wall equidistance fixedly connected with vibrations spring and the spacing telescopic link of stationary blade, the same installation piece of the outer wall fixedly connected with of vibrations spring and spacing telescopic link, the outer wall fixedly connected with vibrations arc board of installation piece.

Preferably, the top outer wall of the L-shaped operating platform is fixedly connected with two supporting rods, the top outer walls of the two supporting rods are fixedly connected with the same tool rest, the bottom outer wall of the tool rest is fixedly connected with two cylinders III, and the outer walls of the two cylinders III are fixedly connected with the same bending knife.

Preferably, two the same cooling plate of outer wall fixedly connected with of bracing piece, and the cooling plate face has the blast hole to having equidistance to the outer wall of package scute, and the outer wall fixedly connected with mounting panel of cooling plate, the top outer wall fixedly connected with air-blower of mounting panel, the blast end of air-blower passes through the inside of pipe connection in the cooling plate.

The beneficial effects of the invention are as follows:

1. when the refrigerator door shell is bent, the third cylinder drives the bending knife to bend the refrigerator door shell, the bending knife presses the end part of the refrigerator door shell onto the angle covering plate, the two side edge plastic plates limit the outer wall of the refrigerator door shell, the electric heating pipe is electrified, the side edge plastic plates are heated through the heating frame, so that the hardness of the refrigerator door shell is changed, the damage to the refrigerator door shell is reduced in the bending process, meanwhile, after the end part of the refrigerator door shell is extruded to be attached to the angle covering plate, the second cylinder is adjusted to drive the electric heating knife to cut the refrigerator door shell close to the bottom end of the angle covering plate, the original toughness and structure of the refrigerator door shell are changed, and the end part of the refrigerator door shell after the angle covering is bent is permanently deformed, the area of this electrical heating sword cutting is comparatively little to the refrigerator door shell tip of cornerite department, is not enough to influence the overall structure of refrigerator door shell tip, and simultaneously, when the electrical heating sword cut, each nick blade carries out the nick to the cutting department, further improves the pleasing to the eye degree of moulding the type effect and the refrigerator door shell tip after the cornerite that improves.

2. Through being provided with No. three pneumatic cylinders, limiting plate and spacing roller, when carrying out the operation of bending of refrigerator door shell, the sword of bending extrudees when bending the operation, adjust a cylinder and drive spacing roller and remove to the top of refrigerator door shell, adjust No. three pneumatic cylinders simultaneously and drive spacing roller and refrigerator door shell contact, carry out spacingly to the below of refrigerator door shell through each spacing roller, prevent that it from bending deformation appearing at the in-process of bending, and simultaneously, this extrusion spacing mode is drum-type extrusion, reduce the damage that causes the refrigerator door shell.

3. Through being provided with the spacing subassembly in upper end, before carrying out the operation of bending of refrigerator door shell, pass the inside of fixed plate with refrigerator door shell, make its friction disc contact with stripper plate below, adjust No. four pneumatic cylinders then and drive the stripper plate and extrude refrigerator door shell, the extruded in-process, extrusion spring is compressed, thereby make friction disc that distributes layer upon layer on the stripper plate contact with each position of refrigerator door shell, improve the spacing fastness of extrusion, and simultaneously, when refrigerator door shell is bent, the adjusting frame is along with taking place to deflect, adjusting spring is extruded, make the refrigerator door shell of the spacing subassembly department in upper end be in a horizontally state all the time, receive the influence above that when avoiding bending the operation.

4. Through being provided with the upset squeeze roll, vibrations arc board and vibrations spring, the in-process that refrigerator door shell was bent, adjust the upset squeeze roll that No. two cylinders drove on the L type frame and extrude refrigerator door shell, the position of guaranteeing refrigerator door shell to be located the top is parallel state with the one end of L type operation panel, make it can not appear deforming because of bending, the upset squeeze roll carries out the extruded in-process to refrigerator door shell, the pivot is rotatory, vibrations arc board contacts with refrigerator door shell, the vibrations spring is extruded, when the pivot is rotatory, the vibrations spring drives vibrations arc board and strikes refrigerator door shell, will hard extrusion change into vibrations extrusion, reduce the damage that causes refrigerator door shell, further protect refrigerator door shell in the bending operation.

5. Through being provided with air-blower, cooling plate and blast hole, the refrigerator door shell in-process of bending starts the air-blower, and the air-blower is through the blast hole on the cooling plate to refrigerator door shell angle department of wrap blast air to make the refrigerator door shell tip rapid cooling after bending, avoid the refrigerator door shell of high temperature to cause the injury to the staff of collection, simultaneously, also avoid refrigerator door shell high temperature department to receive the extrusion and take place secondary deformation.

Drawings

FIG. 1 is a schematic view of the overall structure of a bending wrap angle device for a refrigerator door case according to the present invention;

FIG. 2 is a schematic structural view of a bending die of the bending wrap angle device for the refrigerator door shell, which is provided by the invention;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic view of a lower extrusion limiting assembly of the bending wrap angle device for a refrigerator door shell according to the present invention;

FIG. 5 is a schematic view of an upper end limiting assembly of the bending wrap angle device for a refrigerator door shell according to the present invention;

FIG. 6 is a cross-sectional view of the overall structure of FIG. 5;

FIG. 7 is a schematic structural view of a turning extrusion roller of the bending wrap angle device for the refrigerator door shell, which is provided by the invention;

FIG. 8 is an enlarged view of a portion of the structure of FIG. 7;

fig. 9 is a schematic structural view of a bending knife of the bending wrap angle device for the refrigerator door shell.

In the figure: 1. an L-shaped operating table; 2. wrapping an angle plate; 3. a side plastic plate; 4. a connecting plate; 5. a first cylinder; 6. a support frame; 7. mounting a plate; 8. a support bar; 9. a blower; 10. a tool holder; 11. a second cylinder; 12. a side frame; 13. bending the limiting frame; 14. a bottom support plate; 15. a side lever; 16. mounting a rod; 17. an electric heating tube; 18. a first hydraulic cylinder; 19. a heating frame; 20. a scoring blade; 21. a pushing block; 22. a second hydraulic cylinder; 23. an electric heating knife; 24. a limiting plate; 25. a third hydraulic cylinder; 26. a connecting shaft; 27. a shaft block; 28. a limiting roller; 29. a connecting frame; 30. an adjusting frame; 31. a fixed block; 32. an adjusting plate; 33. a fixing plate; 34. adjusting the spring; 35. a fourth hydraulic cylinder; 36. a compression spring; 37. a pressing plate; 38. a friction plate; 39. an L-shaped frame; 40. a shaft plate; 41. vibrating the arc plate; 42. turning over the squeeze roll; 43. a rotating shaft; 44. mounting a sheet; 45. limiting the telescopic rod; 46. vibrating the spring; 47. a fixing sheet; 48. a third cylinder; 49. bending a knife; 50. a blast hole; 51. and (6) cooling the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a bending and angle wrapping device for a refrigerator door shell comprises an L-shaped operating platform 1, wherein a bending limit frame 13 is fixedly connected to the outer wall of one side of the L-shaped operating platform 1, an angle wrapping plate 2 is fixedly connected to the outer wall of the bending limit frame 13, a side edge molding plate 3 is connected to the outer wall of the upper side and the outer wall of the lower side of the angle wrapping plate 2 through hinges, a bottom support plate 14 is fixedly connected to the outer wall of one side of the bending limit frame 13, a first hydraulic cylinder 18 is fixedly connected to the outer wall of the L-shaped operating platform 1 at equal distance, the other end of the first hydraulic cylinder 18 is connected to the outer wall of the corresponding side edge molding plate 3 through hinges, heating frames 19 are fixedly connected to the outer walls of the two side edge molding plates 3, electric heating pipes 17 are fixedly connected to the inner walls of the two heating frames 19 at equal distance, side rods 15 are fixedly connected to the outer wall of the bending limit frame 13, the outer wall of the top of the side rod 15 is fixedly connected with an installation rod 16, the outer wall of the installation rod 16 is fixedly connected with a second hydraulic cylinder 22, the outer wall of the second hydraulic cylinder 22 is fixedly connected with a pushing block 21, the outer wall of the pushing block 21 is fixedly connected with an electric heating knife 23, the outer wall of the electric heating knife 23 is provided with scoring blades 20 at equal intervals, the electric heating knife 23 is contacted with the outer wall of the top of the angle wrapping plate 2, the three cylinders 48 are used for driving a bending knife 49 to bend the refrigerator door shell after the bending knife 49 presses the end part of the refrigerator door shell onto the angle wrapping plate 2, the two side edge shaping plates 3 limit the outer wall of the refrigerator door shell, the electric heating tube 17 is electrified, the side edge shaping plate 3 is heated through a heating frame 19, thereby change the hardness of refrigerator door shell, make it in the bending process, reduce the damage that receives, simultaneously, extrude the tip of refrigerator door shell with cornerite board 2 back of laminating, adjust No. two pneumatic cylinders 22 and drive electric heating sword 23 and carry out the cutting to the refrigerator door shell that cornerite board 2 is close to bottom department and handle, change its original toughness and structure, make the refrigerator door shell tip permanent deformation after the cornerite of bending, the area that this electric heating sword 23 cut is comparatively little to the refrigerator door shell tip of cornerite department, be not enough to influence the overall structure of refrigerator door shell tip, simultaneously, when electric heating sword 23 cuts, each nick blade 20 carries out the nick to the cutting department, further improve the molding effect and improve the pleasing to the eye degree of refrigerator door shell tip after the cornerite.

Referring to fig. 1 and 4, a supporting frame 6 is fixedly connected to the outer wall of the top of an L-shaped operating platform 1, two first air cylinders 5 are fixedly connected to the outer wall of one side of the supporting frame 6, the same connecting plate 4 is fixedly connected to the outer wall of the two first air cylinders 5, connecting frames 29 are fixedly connected to the outer wall of the connecting plate 4 at equal intervals, a third hydraulic cylinder 25 is fixedly connected to the outer wall of each connecting frame 29, the same limiting plate 24 is fixedly connected to the outer wall of the bottom of the plurality of third hydraulic cylinders 25, shaft blocks 27 are fixedly connected to the two ends of the outer wall of the bottom of the limiting plate 24 at equal intervals, the same connecting shaft 26 is connected to the outer wall of the opposite side of each corresponding two shaft blocks 27 through a bearing, a limiting roller 28 is fixedly connected to the outer wall of the connecting shaft 26, and when a door shell of a refrigerator is bent, a bending knife 49 performs an extrusion bending operation, adjust cylinder 5 and drive spacing roller 28 and remove to the top of refrigerator door shell, adjust No. three pneumatic cylinders 25 simultaneously and drive spacing roller 28 and refrigerator door shell contact, carry on spacingly to the below of refrigerator door shell through each spacing roller 28, prevent that it from bending deformation appearing in the in-process of bending, simultaneously, this extrusion spacing mode is the drum-type extrusion, reduces the damage that causes the refrigerator door shell.

Referring to fig. 1, 5 and 6, an adjusting frame 30 is connected to the outer wall of the L-shaped operating platform 1 near the top end through a hinge, and the bottom outer wall of the adjusting frame 30 is fixedly connected with adjusting springs 34 at equal intervals, the adjusting springs 34 are fixedly connected with the outer wall of one side of the L-shaped operating platform 1, both ends of the top outer wall of the adjusting frame 30 are fixedly connected with fixing blocks 31, the outer wall of one side opposite to the two fixing blocks 31 is fixedly connected with the same fixing plate 33, and the bottom outer wall of fixed plate 33 equidistance fixedly connected with No. four pneumatic cylinders 35, the same regulating plate 32 of bottom outer wall fixedly connected with of a plurality of No. four pneumatic cylinders 35, there are two stripper plates 37 on the bottom outer wall of regulating plate 32 through hinge connection, the equal distance fixedly connected with extrusion spring 36 of the relative one side outer wall of two stripper plates 37 and regulating plate 32, the equal distance fixedly connected with friction disc 38 of the bottom outer wall of two stripper plates 37.

Referring to fig. 1, 7 and 8, two side frames 12 are fixedly connected to an outer wall of one side of an L-shaped operating table 1, two air cylinders 11 are fixedly connected to outer walls of the two side frames 12, the same L-shaped frame 39 is fixedly connected to outer walls of bottoms of the two air cylinders 11, shaft plates 40 are fixedly connected to two ends of an outer wall of a bottom of the L-shaped frame 39, the same rotating shaft 43 is connected to an outer wall of an opposite side of the two shaft plates 40 through a bearing, an overturning extrusion roller 42 is fixedly connected to an outer wall of the rotating shaft 43, the overturning extrusion roller 42 is of a three-quarter cylinder structure, a fixing plate 47 is fixedly connected to an inner wall of the overturning extrusion roller 42, a vibration spring 46 and a limiting telescopic rod 45 are fixedly connected to an outer wall of the fixing plate 47 at equal intervals, the same mounting plate 44 is fixedly connected to outer walls of the vibration spring 46 and the limiting telescopic rod 45, a vibration arc plate 41 is fixedly connected to an outer wall of the mounting plate 44, and the overturning extrusion roller 42 is arranged, Vibrations arc 41 and vibrations spring 46, the in-process that the refrigerator door shell was bent, adjust No. two cylinders 11 and drive the upset squeeze roll 42 on the L type frame 39 and extrude the refrigerator door shell, the position of guaranteeing that the refrigerator door shell is located the top is parallel state with the one end of L type operation panel 1, make it can not appear deforming because of bending, upset squeeze roll 42 carries out the extruded in-process to the refrigerator door shell, pivot 43 is rotatory, vibrations arc 41 contacts with the refrigerator door shell, vibrations spring 46 is extruded, when pivot 43 is rotatory, vibrations spring 46 drives vibrations arc 41 and strikes the refrigerator door shell, change hard extrusion into vibrations extrusion, reduce the damage that causes the refrigerator door shell, further protect the refrigerator door shell in the bending operation.

Referring to fig. 1 and 9, two support rods 8 are fixedly connected to the outer wall of the top of the L-shaped operating table 1, the same tool rest 10 is fixedly connected to the outer wall of the top of the two support rods 8, two third cylinders 48 are fixedly connected to the outer wall of the bottom of the tool rest 10, and the same bending knife 49 is fixedly connected to the outer walls of the two third cylinders 48.

In the invention, the outer walls of the two support rods 8 are fixedly connected with the same cooling plate 51, the cooling plate 51 is provided with air blowing holes 50 facing the outer wall of the angle covering plate 2 at equal intervals, the outer wall of the cooling plate 51 is fixedly connected with the mounting plate 7, the outer wall of the top of the mounting plate 7 is fixedly connected with the air blower 9, and the air blowing end of the air blower 9 is connected to the inside of the cooling plate 51 through a pipeline.

When the refrigerator door shell bending device is used, firstly, the refrigerator door shell penetrates through the adjusting frame 30 to be in contact with the friction plates 38 below the extruding plate 37, then the four-number hydraulic cylinder 35 is adjusted to drive the extruding plate 37 to extrude the refrigerator door shell, the extruding spring 36 is compressed in the extruding process, so that the friction plates 38 distributed on the extruding plate 37 layer by layer are in contact with all positions of the refrigerator door shell, after the upper end limit is finished, the three-number air cylinder 48 drives the bending knife 49 to bend the refrigerator door shell, after the bending knife 49 presses the end part of the refrigerator door shell onto the corner wrapping plate 2, the two side edge plastic plates 3 limit the outer wall of the refrigerator door shell, the electric heating pipe 17 is electrified, the side edge plastic plates 3 are heated through the heating frame 19, so that the hardness of the refrigerator door shell is changed, the damage to the refrigerator door shell is reduced in the bending process, meanwhile, the end part of the refrigerator door shell is extruded to be attached to the corner wrapping plate 2, the second hydraulic cylinder 22 is adjusted to drive the electric heating knife 23 to cut the refrigerator door shell close to the bottom end of the cornerite plate 2, the original toughness and structure of the refrigerator door shell are changed, the end part of the refrigerator door shell after the cornerite is bent is permanently deformed, the cutting area of the electric heating knife 23 is small for the end part of the refrigerator door shell at the cornerite position, the whole structure of the end part of the refrigerator door shell is not enough to be influenced, meanwhile, when the electric heating knife 23 cuts, each nicking blade 20 nicks the cutting part, in the bending process, the first cylinder 5 is adjusted to drive the limit roller 28 to move to the upper part of the refrigerator door shell, the third hydraulic cylinder 25 is adjusted to drive the limit roller 28 to contact with the refrigerator door shell, the lower part of the refrigerator door shell is limited by each limit roller 28, the refrigerator door shell is prevented from being bent and deformed in the bending process, the extrusion limit mode is drum type extrusion, and the damage to the refrigerator door shell is reduced, meanwhile, the second air cylinder 11 is adjusted to drive the overturning extrusion roller 42 on the L-shaped frame 39 to extrude the refrigerator door shell, so that the position above the refrigerator door shell is ensured to be in a parallel state with one end of the L-shaped operating platform 1, the refrigerator door shell is prevented from being deformed due to bending, in the process of extruding the refrigerator door shell by the overturning extrusion roller 42, the rotating shaft 43 rotates, the vibration arc plate 41 is contacted with the refrigerator door shell, the vibration spring 46 is extruded, when the rotating shaft 43 rotates, the vibration spring 46 drives the vibration arc plate 41 to impact the refrigerator door shell, rigid extrusion is changed into vibration extrusion, damage to the refrigerator door shell is reduced, after the refrigerator door shell is bent and wrapped at the corner, the air blower 9 is started, the air blower 9 blows air at the wrapped corner of the refrigerator door shell through the air blowing hole 50 on the cooling plate 51, the end part of the bent refrigerator door shell is rapidly cooled, and damage to collected workers caused by the high-temperature refrigerator door shell is avoided, meanwhile, the secondary deformation of the refrigerator door shell at a high temperature position due to extrusion is also avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A cornerite equipment of bending for refrigerator door shell, including L type operation panel (1), its characterized in that, one side outer wall fixedly connected with of L type operation panel (1) bends spacing (13), and the outer wall fixedly connected with cornerite board (2) of spacing (13) of bending, cornerite board (2) lie in the outer wall of top and lie in the outer wall of below all through hinge connection with side mould board (3), one side outer wall fixedly connected with bottom sprag board (14) of spacing (13) of bending, and the outer wall of bottom sprag board (14) and L type operation panel (1) is impartial apart from fixedly connected with pneumatic cylinder (18), the other end of pneumatic cylinder (18) is connected in the outer wall of corresponding side mould board (3) through the hinge connection, two the outer wall of side mould board (3) all fixedly connected with heating frame (19), and the impartial apart from fixedly connected with electric heating pipe (17) of the inner wall of two heating frames (19), the outer wall of the bending limiting frame (13) is fixedly connected with a side rod (15), the outer wall of the top of the side rod (15) is fixedly connected with an installation rod (16), the outer wall of the installation rod (16) is fixedly connected with a second hydraulic cylinder (22), the outer wall of the second hydraulic cylinder (22) is fixedly connected with a pushing block (21), the outer wall of the pushing block (21) is fixedly connected with an electric heating knife (23), nicking blades (20) are arranged on the outer wall of the electric heating knife (23) at equal intervals, and the electric heating knife (23) is in contact with the outer wall of the top of the angle wrapping plate (2);

the outer wall of one side of the L-shaped operating platform (1) is fixedly connected with two side frames (12), the outer walls of the two side frames (12) are fixedly connected with a second air cylinder (11), the outer wall of the bottom of the second air cylinder (11) is fixedly connected with a same L-shaped frame (39), two ends of the outer wall of the bottom of the L-shaped frame (39) are fixedly connected with shaft plates (40), the outer wall of one opposite side of the two shaft plates (40) is connected with a same rotating shaft (43) through a bearing, the outer wall of the rotating shaft (43) is fixedly connected with an overturning extrusion roller (42), the overturning extrusion roller (42) is of a three-quarter cylindrical structure, the inner wall of the overturning extrusion roller (42) is fixedly connected with a fixing plate (47), the outer wall of the fixing plate (47) is fixedly connected with a vibrating spring (46) and a limiting telescopic rod (45) at equal intervals, the outer wall of the vibrating spring (46) and the limiting telescopic rod (45) is fixedly connected with a same mounting plate (44), the outer wall of the mounting piece (44) is fixedly connected with a vibration arc plate (41).

2. The bending and corner-wrapping device for the refrigerator door shell according to claim 1, wherein a supporting frame (6) is fixedly connected to the outer wall of the top of the L-shaped operating platform (1), two first cylinders (5) are fixedly connected to the outer wall of one side of the supporting frame (6), and the same connecting plate (4) is fixedly connected to the outer walls of the two first cylinders (5).

3. The bending wrap angle device for the refrigerator door shell according to claim 2, characterized in that the outer walls of the connecting plates (4) are fixedly connected with connecting frames (29) at equal intervals, the outer wall of each connecting frame (29) is fixedly connected with a third hydraulic cylinder (25), and the outer walls of the bottoms of the third hydraulic cylinders (25) are fixedly connected with the same limiting plate (24).

4. The bending and corner-wrapping apparatus for a refrigerator door shell according to claim 3, wherein shaft blocks (27) are fixedly connected to both ends of the bottom outer wall of the position-limiting plate (24) at equal distances, the same connecting shaft (26) is connected to the outer wall of each corresponding two shaft blocks (27) at the opposite side through a bearing, and a position-limiting roller (28) is fixedly connected to the outer wall of the connecting shaft (26).

5. The bending and corner wrapping equipment for the refrigerator door shell according to claim 1, wherein an adjusting frame (30) is connected to the outer wall, close to the top end, of the L-shaped operating platform (1) through a hinge, adjusting springs (34) are fixedly connected to the outer wall of the bottom of the adjusting frame (30) at equal intervals, the adjusting springs (34) are fixedly connected to the outer wall of one side of the L-shaped operating platform (1), and fixing blocks (31) are fixedly connected to two ends of the outer wall of the top of the adjusting frame (30).

6. The bending and corner wrapping equipment for the refrigerator door shell according to claim 5, wherein the same fixed plate (33) is fixedly connected to the outer wall of the opposite side of the two fixed blocks (31), the four hydraulic cylinders (35) are fixedly connected to the outer wall of the bottom of the fixed plate (33) at equal intervals, the same adjusting plate (32) is fixedly connected to the outer walls of the bottoms of the four hydraulic cylinders (35), the two extrusion plates (37) are connected to the outer wall of the bottom of the adjusting plate (32) through hinges, the extrusion springs (36) are fixedly connected to the outer walls of the opposite sides of the two extrusion plates (37) and the adjusting plate (32) at equal distances, and the friction plates (38) are fixedly connected to the outer walls of the bottoms of the two extrusion plates (37) at equal distances.

7. The bending and corner-wrapping device for the refrigerator door shell according to claim 1, wherein two support rods (8) are fixedly connected to the outer wall of the top of the L-shaped operating platform (1), the same tool rest (10) is fixedly connected to the outer walls of the top of the two support rods (8), two third cylinders (48) are fixedly connected to the outer wall of the bottom of the tool rest (10), and the same bending knife (49) is fixedly connected to the outer walls of the two third cylinders (48).

8. The corner-wrapping device for the refrigerator door shell according to claim 7, wherein the same cooling plate (51) is fixedly connected to the outer walls of the two support rods (8), the cooling plate (51) is provided with air blowing holes (50) facing the outer wall of the corner-wrapping plate (2) at equal intervals, the outer wall of the cooling plate (51) is fixedly connected with a mounting plate (7), the outer wall of the top of the mounting plate (7) is fixedly connected with an air blower (9), and the air blowing end of the air blower (9) is connected to the inside of the cooling plate (51) through a pipeline.