CN113634679A

CN113634679A - Bending device for door frame production

Info

Publication number: CN113634679A
Application number: CN202111203448.XA
Authority: CN
Inventors: 林紫力
Original assignee: Guangdong Liangshuo Door & Window Technology Co Ltd
Current assignee: Guangdong Liangshuo Door & Window Technology Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2021-11-12
Anticipated expiration: 2041-10-15
Also published as: CN113634679B

Abstract

A bending device for door frame production relates to the technical field related to door and window processing, and comprises a base plate, wherein a stamping device and a filling device are arranged on the base plate, a steel plate is placed on the filling device, a fixing device I and a fixing device II for clamping the steel plate are also arranged on the base plate, the fixing device I and the fixing device II are positioned on two sides of the base plate, the steel plate is positioned between the fixing device I and the fixing device II, and the fixing device I and the fixing device II are identical in structure.

Description

Bending device for door frame production

Technical Field

The invention relates to the technical field related to door and window processing, in particular to a bending device for door frame production.

Background

The door frame is a device for preventing the collapse of a wall beside a door and has the function of supporting a door plate, when a metal material is adopted as the door frame, in order to save materials, the door frame is made into a hollow shape, generally, the metal is made into thin sheets with the pulling performance, then the thin sheets are placed on a lower pressing die of a frame pressing machine, then the frame pressing machine is started, an upper pressing die of the frame pressing machine is pressed on the upper pressing die, then one bending is generated, one thin sheet is made into the door frame, the thin sheet needs to be bent for multiple times, the upper pressing die needs to be returned after each bending is completed, and then the thin sheet is moved until the technical requirements of the bending on the thin sheet are completed.

The Chinese invention patent with the publication number of CN112692124A discloses a bending device for a door and window processing door frame, which comprises a protective box body, a first squeeze roller arranged at the upper end of the protective box body, a connecting hole arranged on the upper end surface of the protective box body and matched with the first squeeze roller, a second squeeze roller arranged relative to the first squeeze roller, a driving assembly for driving the first squeeze roller and the second squeeze roller, and a refrigerating assembly arranged in the inner cavity of the protective box body, wherein the driving assembly is used for driving the first squeeze roller and the second squeeze roller, so that the aluminum profile can be conveniently extruded and bent through the first squeeze roller and the second squeeze roller, and the cooling assembly is used for carrying out air cooling setting on the aluminum profile in the bending process, thereby effectively ensuring the quality of bending the aluminum profile; however, the device still needs manual assistance in the operation process, needs manual righting for the position change of the section bar in the bending process, cannot automatically fix the position change generated by bending, and is more difficult to righting and fixing a part of the bent door frame.

Disclosure of Invention

The invention discloses a bending device for door frame production, which comprises a bottom plate, wherein a stamping device and a filling device are arranged on the bottom plate, a steel plate is placed on the filling device, a fixing device I and a fixing device II for clamping the steel plate are also arranged on the bottom plate, the fixing device I and the fixing device II are positioned on two sides of the bottom plate, the steel plate is positioned between the fixing device I and the fixing device II, and the fixing device I and the fixing device II are identical in structure.

The fixing device I comprises a linkage assembly, the linkage assembly is connected with the output end of the stamping device, one side of the linkage assembly is connected with an angle adjusting assembly, a clamping assembly is arranged on the angle adjusting assembly, and a longitudinal adjusting assembly is also arranged on the angle adjusting assembly; the clamping assembly comprises a rotating plate I, a shaft cluster consisting of a plurality of rows of limiting shafts and a plurality of rows of limiting shafts is arranged on the rotating plate I, each limiting shaft comprises a fixing shaft, the fixing shafts are fixedly arranged on the rotating plate I, fixing sleeves are slidably arranged on the fixing shafts, springs III are fixedly arranged in the fixing sleeves, the springs III are fixedly connected with the fixing shafts, and the shaft clusters in the fixing devices I and the fixing devices II are jointly fixed on the steel plate.

Further, the linkage assembly comprises a linkage rod and a small support, the linkage rod is fixedly installed at the output end of the stamping device, the small support is fixedly installed on the bottom plate, a sliding shaft is installed on the small support in a sliding mode, a pressing plate is fixedly installed on the sliding shaft, a short spring is sleeved on the sliding shaft, the upper end of the short spring is fixedly connected with the lower end of the pressing plate, the lower end of the short spring is fixedly connected with the upper end of the small support, a rack I is fixedly installed at the lower end of the pressing plate, a rotating speed regulator is further fixedly installed on the bottom plate, a gear I is fixedly installed at the input end of the rotating speed regulator, the gear I is meshed with the rack I, a driving belt wheel is fixedly installed at the output end of the rotating speed regulator, a belt is sleeved on the driving belt wheel, and the belt drives the angle adjusting assembly.

Furthermore, the angle adjusting assembly comprises a supporting block and a vertical plate, the supporting block is fixedly installed on the bottom plate, a driven belt wheel is rotatably installed on the supporting block, the driven belt wheel is sleeved with the belt, the driven belt wheel is connected with a key shaft through a key groove, and one end of the key shaft is fixedly provided with a large gear; the riser slidable mounting be in on the bottom plate, set up the circular arc rail on the riser, the circular arc rail with driving pulley's axle center is concentric, and the fixed arc rack that is equipped with on the riser, the arc rack with the circular arc rail is concentric, gear wheel slidable mounting be in on the circular arc rail, the gear wheel with the meshing of arc rack, still slide in the circular arc rail and be equipped with the mounting bracket, in the circular arc rail the mounting bracket is located the upside of gear wheel, and the gear wheel drives the mounting bracket slides, the fixed spring I that is equipped with of mounting bracket lower extreme, I lower extreme of spring with bottom plate fixed connection is equipped with on the mounting bracket vertical adjusting part and chucking subassembly.

Furthermore, the clamping assembly further comprises a mounting plate, the mounting plate is fixedly connected with the mounting plate, a sliding block is arranged on the mounting plate in a sliding manner, springs II are fixedly arranged on two sides of the sliding block, the springs II are fixedly connected with the mounting plate, a fixed motor is fixedly arranged on the sliding block, and a middle wheel is fixedly arranged on a rotating shaft of the fixed motor; the first end rotation of mounting panel is equipped with change board I changes board I and changes fixed being equipped with on the board I and turn round wheel I, and the fixed torsion spring I that is equipped with on the torsion wheel I, torsion spring I with mounting panel fixed connection, be equipped with belt I between intermediate wheel and the torsion wheel I.

Furthermore, the clamping assembly further comprises a rotating plate II, the rotating plate II is rotatably installed at the second end of the installation plate, the rotating plate II is provided with a shaft bush used for clamping the steel plate, a torsion wheel II is fixedly installed on the rotating plate II, a torsion spring II is fixedly installed on the torsion wheel II, the torsion spring II is fixedly connected with the installation plate, and a belt II is installed between the torsion wheel II and the middle wheel.

Furthermore, the longitudinal adjusting assembly comprises a rack II, the rack II is fixedly connected with the vertical plate, a central gear is meshed between the two racks II in the fixing device I and the fixing device II, and the central gear is driven by a driving motor.

Furthermore, the stamping device comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected with the bottom plate through a connecting frame, a stamping plate is fixedly arranged on a cylinder arm of the hydraulic cylinder, the bottom plate is also fixedly provided with a cylinder, a template is fixedly arranged on the cylinder arm of the cylinder, the template is provided with a plurality of transverse grooves, and the bending angles in the transverse grooves are different.

Furthermore, the filling device comprises straight rods, the straight rods are fixedly mounted on the bottom plate and are provided with a plurality of pulleys, and the steel plates are placed on the pulleys.

Compared with the prior art, the invention has the beneficial effects that: (1) the fixing device is provided with a structure linked with the stamping device, so that the steel plate can be fixed in the whole process of bending; (2) the shaft cluster arranged in the fixing device is used as a contact position for fixing the steel plate, can be suitable for the bent part of the steel plate to be fixed, and is suitable for various shapes; (3) the template can bend the steel plate into different angles, and the adjusting mode is simple; (4) the two fixing devices are respectively positioned on the two sides of the steel plate, so that the steel plate can be more stably fixed.

Drawings

Fig. 1 is a schematic overall view of a bending device for doorframe production.

FIG. 2 is a schematic view of a packing device according to the present invention.

FIG. 3 is an enlarged view of the invention at B in FIG. 2.

FIG. 4 is a schematic view of a stamping apparatus according to the present invention.

FIG. 5 is an enlarged view of the invention at A in FIG. 1.

FIG. 6 is a schematic view of the fixing device of the present invention.

FIG. 7 is a schematic view of another embodiment of the fixing device of the present invention.

FIG. 8 is a schematic view of a part of the fixing device of the present invention.

FIG. 9 is a second schematic view of a portion of the fastening device of the present invention.

FIG. 10 is a schematic view of the structure of the axial cluster in the fixing device of the present invention.

Reference numerals: 1-a fixing device I; 2-a stamping device; 3-a packing device; 4-a bottom plate; 5-a steel plate; 6-fixing device II; 101-a linkage rod; 102-a platen; 103-a sliding shaft; 104-small support; 105-a driving pulley; 106-rotational speed regulator; 107-a belt; 108-gear i; 109-rack I; 110-key shaft; 111-branch block; 112-a driven pulley; 113-bull gear; 114-a mounting frame; 115-vertical plate; 116-an arc shaped rack; 117-spring i; 118-a stationary motor; 119-a mounting plate; 120-a slide block; 121-spring II; 122-belt I; 123-torsion spring I; 124-torsion wheel I; 125-rotating plate I; 126-a stationary shaft; 127-a fixed sleeve; 128-belt II; 129-rotating plate II; 130-torsion wheel ii; 131-torsion spring II; 132-an intermediate wheel; 133-spring iii; 134-rack II; 135-sun gear; 201-hydraulic cylinder; 202-punching a plate; 203-template; 204-cylinder; 301-straight rod; 302-pulley.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b): as shown in fig. 1 to 3, a bending device for door frame production includes a bottom plate 4, the bottom plate 4 is used as a workbench, four corners below the bottom plate 4 are provided with support legs, the bottom plate 4 is provided with a packing device 3, the packing device 3 includes a straight rod 301, the bottom plate 4 is fixedly provided with a plurality of straight rods 301, each straight rod 301 is rotatably provided with a pulley 302, and a steel plate 5 waiting for bending is placed on the pulley 302.

As shown in fig. 1 and 4, a punching device 2 is further mounted on the base plate 4, the punching device 2 includes a hydraulic cylinder 201, the hydraulic cylinder 201 is fixedly mounted on the base plate 4 through a connecting frame, a punching plate 202 is fixedly mounted on a cylinder arm of the hydraulic cylinder 201, a cylinder 204 is fixedly mounted on the base plate 4, a die plate 203 is fixedly mounted on a cylinder arm of the cylinder 204, the die plate 203 is slidably mounted on the base plate 4, a plurality of transverse grooves of different shapes, in this embodiment, two transverse grooves are provided, the angles in the transverse grooves are forty-five degrees and ninety degrees, respectively, and an external force is added to push the steel plate 5 along the pulley 302 to a position between the punching plate 202 and the transverse grooves for bending.

As shown in fig. 1 and 5, the fixing device i 1 includes a linkage rod 101, the linkage rod 101 is fixedly installed on a stamping plate 202, a small support 104 is fixedly installed on a bottom plate 4, a sliding shaft 103 is slidably installed on the small support 104, a pressing plate 102 is fixedly installed on the sliding shaft 103, when the linkage rod 101 presses down along with the stamping plate 202, the pressing plate 102 is pressed downwards by the linkage rod 101, the sliding shaft 103 is fixedly installed between the pressing plate 102 and the small support 104, a rack i 109 is fixedly installed on the lower side of the pressing plate 102, a gear i 108 is engaged with one side of the rack i 109, the gear i 108 is fixedly connected with an input end of a rotational speed regulator 106, the rotational speed regulator 106 is fixedly installed on the bottom plate 4, a driving pulley 105 is fixedly installed on an output end of the rotational speed regulator 106, and a belt 107 is connected to the driving pulley 105. The driving belt wheel 105 is driven by the matching of the rack I109 and the gear I108.

As shown in fig. 1, 5, 6, and 7, the fixing device i 1 further includes a supporting block 111, a driven pulley 112 is rotatably mounted on the supporting block 111, a belt 107 is sleeved on the driven pulley 112, the belt 107 drives the driven pulley 112 to rotate, a key slot is disposed in the driven pulley 112, a key shaft 110 is disposed in the key slot, a large gear 113 is fixedly mounted at one end of the key shaft 110, the driven pulley 112 drives the large gear 113 to rotate, a vertical plate 115 is slidably mounted on the bottom plate 4, an arc rail is disposed on the vertical plate 115, the arc rail is concentric with an axis of the driving pulley 105, an arc rack 116 is fixedly mounted on the vertical plate 115, the arc rack 116 is concentric with the arc rail, the large gear 113 is slidably mounted in the arc rail, the large gear 113 is engaged with the arc rack 116, so that the large gear 113 slides along the arc rail when rotating, a mounting frame 114 is slidably mounted in the arc rail, and a portion of the mounting frame 114 in the arc rail is located above the large gear 113, when the bull gear 113 slides upwards, the mounting frame 114 is driven to slide upwards, a spring I117 is fixedly arranged between the mounting frame 114 and the bottom plate 4, and when the bull gear 113 rotates reversely, the spring I117 pulls the mounting frame 114 to reset.

As shown in fig. 1, 8, 9 and 10, a mounting plate 119 is fixedly installed on the mounting frame 114, a slider 120 is slidably installed on the mounting plate 119, springs ii 121 are fixedly installed on both sides of the slider 120, the springs ii 121 are fixedly connected with the mounting plate 119, a fixed motor 118 is fixedly installed on the slider 120, a middle wheel 132 is fixedly installed on a rotating shaft of the fixed motor 118 through the slider 120, a rotating plate i 125 and a rotating plate ii 129 are respectively and rotatably installed on both ends of the mounting plate 119, a torsion wheel i 124 is fixedly installed on the rotating plate i 125, a belt i 122 is installed between the torsion wheel i 124 and the middle wheel 132, a torsion spring i 123 is sleeved on a connecting shaft of the rotating plate i 125 and the mounting plate 119, a first end of the torsion spring i 123 is fixedly connected with the torsion wheel i 124, a second end of the torsion wheel i 123 is fixedly connected with the mounting plate 119, a torsion wheel ii 130 is fixedly installed on the rotating plate 129 ii, a belt ii 128 is installed between the torsion wheel ii 130 and the middle wheel 132, a torsion spring II 131 is sleeved on a shaft connecting a rotating plate II 129 and a mounting plate 119, a first end of the torsion spring II 131 is fixedly connected with a torsion wheel II 130, a second end of the torsion wheel II 130 is fixedly connected with the mounting plate 119, a fixed motor 118 rotates to drive the rotating plate II 129 and the rotating plate I125 to rotate through a belt II 128 and a belt I122, shaft clusters are arranged on the rotating plate I125 and the rotating plate II 129, the shaft clusters consist of seven rows and seven columns of limiting shafts in the embodiment, each limiting shaft comprises a fixed shaft 126, the fixed shaft 126 is fixedly connected with the rotating plate I125 or the rotating plate II 129, a fixed sleeve 127 is slidably arranged on the fixed shaft 126, a spring III 133 is fixedly arranged in the fixed sleeve 127, steel plates 5 with different shapes can be fixed in the shaft clusters by extrusion, a rack II 134 is fixedly arranged on a vertical plate 115, a fixing device I1 and a fixing device II 6 have the same structure and are positioned on two sides of a bottom plate 4, the fixing device I1 and the fixing device II 6 are respectively used for fixing two ends of the steel plates 5, a central gear 135 is meshed between the racks II 134 in the fixing device I1 and the fixing device II 6, and the central gear 135 is rotatably arranged on the bottom plate 4 and driven by a driving motor.

The working principle is as follows: the cylinder 204 is started to drive the template 203 to move, the transverse groove corresponding to the required bending angle is opposite to the punching plate 202, the steel plate 5 to be bent is placed on the filling device 3 and pushed to the punching device 2 along the pulley 302, the driving motor is started to drive the central gear 135, the central gear 135 drives the racks II 134 in the fixing device I1 and the fixing device II 6 to move together, and further drives the two vertical plates 115 to approach the steel plate 5 simultaneously, in the process, the key shaft 110 slides in the driven belt pulley 112, the shaft cluster clamps the steel plate 5 together, the corresponding fixing sleeve 127 can compress the spring III 133 and slide along the fixing shaft 126 according to the shape of the steel plate 5, a notch corresponding to the shape of the steel plate 5 is formed in the shaft cluster, the fixing motor 118 is started, the fixing motor 118 drives the intermediate wheel 132 to rotate, the intermediate wheel 132 drives the rotating plate II 129 and the rotating plate I125 to rotate through the belt II 128 and the belt I122, and further drive the whole axle cluster to rotate, so that the gap of the axle cluster rotates to further fix the steel plate 5, when one set of axle cluster on the rotating plate II 129 and the rotating plate I125 is clamped first, the intermediate wheel 132 continues to rotate to drive the fixed motor 118 and the slide block 120 to slide towards the clamped side, and finally all the axle clusters are clamped, the hydraulic cylinder 201 is started, the hydraulic cylinder 201 drives the stamping plate 202 to extrude downwards, the steel plate 5 is bent to the same angle with the transverse groove on the template 203, the linkage rod 101 extrudes the pressing plate 102 downwards in the downward pressing process, the pressing plate 102 drives the rack I109 downwards, the rack I109 drives the gear I108, the gear I108 drives the driving pulley 105 through the speed regulator 106, the driving pulley 105 drives the belt 107, the belt 107 drives the driven pulley 112 to rotate, the driven pulley 112 drives the key shaft 110 to rotate, the key shaft 110 drives the large gear 113 to rotate, and the large gear 113 slides in the circular arc groove, and drive mounting bracket 114 and slide in the arc channel, axle clump and steel sheet 5 on mounting bracket 114 all follow the removal, and the position of removal corresponds with steel sheet 5 the angle of upwarping when bending, needs the proportion of speed change according to angle modulation speed regulator 106 before bending for when steel sheet 5 bends different angles, fixing device I1 always follows upwarping of steel sheet 5 and presss from both sides tightly, and the reciprocal punching press of many times is finally bent into the door frame.

Claims

1. The utility model provides a bending device for door frame production, includes bottom plate (4), is equipped with stamping device (2) and filler device (3) on bottom plate (4), places steel sheet (5) on filler device (3), still is equipped with fixing device I (1) and fixing device II (6) that are used for pressing from both sides tight steel sheet (5) on bottom plate (4), its characterized in that: the fixing device I (1) and the fixing device II (6) are positioned on two sides of the bottom plate (4), the steel plate (5) is positioned between the fixing device I (1) and the fixing device II (6), and the fixing device I (1) and the fixing device II (6) are identical in structure;

the fixing device I (1) comprises a linkage assembly, the linkage assembly is connected with the output end of the stamping device (2), one side of the linkage assembly is connected with an angle adjusting assembly, a clamping assembly is arranged on the angle adjusting assembly, and a longitudinal adjusting assembly is further arranged on the angle adjusting assembly; the clamping assembly comprises a rotating plate I (125), a shaft cluster consisting of a plurality of rows of limiting shafts and a plurality of columns of limiting shafts is arranged on the rotating plate I (125), each limiting shaft comprises a fixing shaft (126), the fixing shafts (126) are fixedly arranged on the rotating plate I (125), fixing sleeves (127) are slidably arranged on the fixing shafts (126), springs III (133) are fixedly arranged in the fixing sleeves (127), the springs III (133) are fixedly connected with the fixing shafts (126), and the shaft cluster in the fixing device I (1) and the fixing device II (6) is jointly fixed to the steel plate (5).

2. A bending device for doorframe production as claimed in claim 1, wherein: the linkage assembly comprises a linkage rod (101) and a small support (104), the linkage rod (101) is fixedly installed at the output end of the stamping device (2), the small support (104) is fixedly installed on the bottom plate (4), a sliding shaft (103) is installed on the small support (104) in a sliding mode, a pressing plate (102) is fixedly installed on the sliding shaft (103), a short spring is sleeved on the sliding shaft (103), the upper end of the short spring is fixedly connected with the lower end of the pressing plate (102), the lower end of the short spring is fixedly connected with the upper end of the small support (104), a rack I (109) is fixedly installed at the lower end of the pressing plate (102), a rotating speed regulator (106) is fixedly installed on the bottom plate (4), a gear I (108) is fixedly installed at the input end of the rotating speed regulator (106), the gear I (108) is meshed with the rack I (109), a driving pulley (105) is fixedly installed at the output end of the rotating speed regulator (106), a belt (107) is sleeved on the driving pulley (105), and the belt (107) drives the angle adjusting assembly.

3. A bending device for doorframe production as claimed in claim 2, wherein: the angle adjusting assembly comprises a supporting block (111) and a vertical plate (115), the supporting block (111) is fixedly installed on the bottom plate (4), a driven belt wheel (112) is rotatably installed on the supporting block (111), the belt (107) is sleeved on the driven belt wheel (112), a key shaft (110) is connected onto the driven belt wheel (112) through a key slot, and a large gear (113) is fixedly installed at one end of the key shaft (110); riser (115) slidable mounting is in on bottom plate (4), set up the circular arc rail on riser (115), the circular arc rail with the axle center of driving pulley (105) is concentric, and fixed arc rack (116) of being equipped with is gone up in riser (115), arc rack (116) with the circular arc rail is concentric, gear wheel (113) slidable mounting is in on the circular arc rail, gear wheel (113) with arc rack (116) meshing, still slide in the circular arc rail and be equipped with mounting bracket (114), in the circular arc rail mounting bracket (114) are located the upside of gear wheel (113), and gear wheel (113) drive mounting bracket (114) slide, mounting bracket (114) lower extreme fixed spring I (117) are equipped with, spring I (117) lower extreme with bottom plate (4) fixed connection is equipped with on mounting bracket (114) vertical adjusting part and chucking subassembly.

4. A bending device for doorframe production as claimed in claim 3, wherein: the clamping assembly further comprises a mounting plate (119), the mounting plate (119) is fixedly connected with the mounting frame (114), a sliding block (120) is arranged on the mounting plate (119) in a sliding mode, springs II (121) are fixedly arranged on two sides of the sliding block (120), the springs II (121) are fixedly connected with the mounting plate (119), a fixed motor (118) is fixedly arranged on the sliding block (120), and a middle wheel (132) is fixedly arranged on a rotating shaft of the fixed motor (118); the rotatory being equipped with of first end of mounting panel (119) changes board I (125), changes fixed being equipped with on board I (125) and turns round I (124), and the fixed torsion spring I (123) that is equipped with on the torsion wheel I (124), torsion spring I (123) with mounting panel (119) fixed connection, be equipped with belt I (122) between middle wheel (132) and torsion wheel I (124).

5. A bending device for door frame production according to claim 4, characterized in that: the clamping assembly further comprises a rotating plate II (129), the rotating plate II (129) is rotatably installed at the second end of the mounting plate (119), the rotating plate II (129) is provided with a rotating wheel II (130), the rotating plate II (129) is used for clamping the steel plate (5), the shaft cluster is arranged on the rotating plate II (129), the rotating wheel II (130) is fixedly provided with a torsion spring II (131), the torsion spring II (131) is fixedly connected with the mounting plate (119), and a belt II (128) is arranged between the torsion wheel II (130) and the intermediate wheel (132).

6. A bending device for door frame production according to claim 5, characterized in that: the vertical adjusting assembly comprises a rack II (134), the rack II (134) is fixedly connected with the vertical plate (115), a central gear (135) is meshed between the two racks II (134) in the fixing device I (1) and the fixing device II (6), and the central gear (135) is driven by a driving motor.

7. A bending device for doorframe production as claimed in claim 1, wherein: the punching device (2) comprises a hydraulic cylinder (201), the hydraulic cylinder (201) is fixedly connected with the base plate (4) through a connecting frame, a punching plate (202) is fixedly arranged on a cylinder arm of the hydraulic cylinder (201), an air cylinder (204) is fixedly arranged on the base plate (4), a template (203) is fixedly arranged on the cylinder arm of the air cylinder (204), a plurality of transverse grooves are formed in the template (203), and the bending angles in the transverse grooves are different.

8. A bending device for doorframe production as claimed in claim 1, wherein: the packing device (3) comprises a straight rod (301), the straight rod (301) is fixedly installed on the bottom plate (4), the straight rod (301) is provided with a plurality of straight rods, a pulley (302) is rotatably installed on each straight rod (301), and the steel plate (5) is placed on the pulley (302).