Bending equipment and bending method for door frame production

Abstract

The invention discloses door frame production bending equipment and a bending method, and particularly relates to the technical field of door frame production, the door frame production bending equipment comprises a base, a supporting frame is fixedly mounted at the top end of the base, a bending mechanism is fixedly mounted on one side of the top end of the supporting frame, and a cutting mechanism is fixedly mounted in the middle of the top end of the supporting frame. The bending mechanism is arranged to continuously convey a strip-shaped raw material, the middle of the strip-shaped raw material is continuously bent step by step through a first bending convex ring, a second bending convex ring and a third bending convex ring, and a downwards-protruding bending piece is formed in the middle of the strip-shaped raw material. The extrusion knife rest is used for extruding and bending different positions of a single plate to form a bent part, and the equipment can continuously and automatically convey the strip-shaped raw materials and continuously and automatically bend the strip-shaped raw materials, so that the production efficiency of the door frame is improved without manually placing the single plate.

Description

Technical Field

[0001] The invention relates to the technical field of door frame production, and in particular to a door frame production bending device and a bending method. Background Art

[0002] As an important part of modern industry, automobile manufacturing has become an indispensable part of people's lives. As an important part of automobiles, the quality of automobile door frames and their manufacturing process directly affects the quality and safety performance of the whole vehicle. Automobile door frames are generally made of aluminum alloy. As a door frame material, aluminum alloy has a lower density and weight, which is conducive to improving the fuel economy of the whole vehicle and reducing the weight of the vehicle.

[0003] Traditional automobile door frame bending processing mostly uses proprietary bending equipment to extrude and bend the plate. During the bending process, the plate needs to be manually placed on the extrusion bending equipment, and the stamping position of the plate and the position of the extrusion tool holder are changed to correspond. The extrusion tool holder is used to extrude and bend different positions of a single plate to form a bent part. After bending, the next plate is extruded and bent. This bending method is cumbersome, time-consuming and labor-intensive, affecting the overall production efficiency of the door frame. For this reason, we propose a door frame production bending equipment and bending method to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a door frame production bending device and a bending method to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a door frame production bending equipment, comprising a base, a support frame is fixedly installed on the top of the base, a bending mechanism is fixedly installed on one side of the top of the support frame, a cutting mechanism is fixedly installed on the middle of the top of the support frame, an auxiliary mechanism is fixedly installed on the side of the cutting mechanism away from the bending mechanism, a supporting mechanism is fixedly installed on the side of the top of the support frame away from the bending mechanism, a mounting frame is fixedly installed on the side of the top of the base close to the bending mechanism, and a cylindrical raw material belt is detachably and rotatably installed on the top of the mounting frame.

[0006] As a preferred technical solution of the present invention, the bending mechanism includes a plurality of evenly distributed U-shaped frames, the U-shaped frames are fixedly mounted on the top of the supporting frame, the bottom of the U-shaped frames is rotatably mounted with a first axis, the top sliding card of the U-shaped frame is provided with two symmetrically distributed card slide seats, the middle part of the two card slide seats is rotatably mounted with a second axis, the top of the U-shaped frame is threadedly mounted with two symmetrically distributed lifting screws, the top of the card slide seat is fixedly mounted with a rotating seat, the bottom of the lifting screw is rotatably mounted on the middle part of the corresponding rotating seat, the top of the lifting screw is fixedly mounted with a turning handle, a group of first axes and second axes at one side of the cylindrical raw material belt are fixedly sleeved with guide rollers on their outer sides, and the multiple groups of first axes and second axes at one side of the cylindrical raw material belt are fixedly sleeved with first bending rollers, second bending rollers and third bending rollers on their outer sides respectively.

[0007] As a preferred technical solution of the present invention, both ends of one of the guide rollers are integrally formed with limiting convex rings, and both ends of the other guide roller are provided with limiting ring grooves corresponding to the limiting convex rings.

[0008] As a preferred technical solution of the present invention, one of the first bending rollers has a first bending convex ring integrally formed in the middle portion, and another of the first bending rollers has a first bending ring groove used in conjunction with the first bending convex ring formed in the middle portion, one of the second bending rollers has a second bending convex ring integrally formed in the middle portion, and another of the second bending rollers has a second bending ring groove used in conjunction with the second bending convex ring formed in the middle portion, one of the third bending rollers has a third bending convex ring integrally formed in the middle portion, and another of the third bending rollers has a third bending ring groove used in conjunction with the third bending convex ring formed in the middle portion, and the widths of the first bending convex ring, the second bending convex ring and the third bending convex ring gradually increase.

[0009] As a preferred technical solution of the present invention, a plurality of driving shafts are fixedly installed at the ends of the first shafts, a sprocket is fixedly sleeved on the outer sides of the driving shafts, a plurality of sprockets are meshingly connected with chains on the outer sides, a first motor is fixedly installed on the outer side of one of the U-shaped frames, and the driving end of the first motor and the end of one of the driving shafts are fixedly installed.

[0010] As a preferred technical solution of the present invention, the cutting mechanism includes a cutting outer frame, which is fixedly installed in the middle of the top end of the support frame, and a door frame through-slot is opened in the middle of the cutting outer frame, and a top cutting knife is slidingly provided on the cutting outer frame near the top position of the door frame through-slot, and a bottom cutting knife is slidingly provided on the cutting outer frame near the bottom position of the door frame through-slot, and two symmetrically distributed side cutting knives are slidingly provided on the side position of the cutting outer frame near the door frame through-slot, and a plurality of evenly distributed telescopic parts are provided on the opposite sides of the top cutting knife, the bottom cutting knife and the side cutting knife, and the telescopic parts include a telescopic outer cylinder, and the opposite ends of the plurality of telescopic outer cylinders are integrally formed with a first tube, and the plurality of The opposite ends of the telescopic outer cylinder are integrally formed with a second tube, the telescopic outer cylinder, the first tube and the second tube are fixedly clamped in the cutting outer frame, the opposite sides of the multiple telescopic outer cylinders are slidably clamped with telescopic shafts, the opposite ends of the multiple telescopic shafts extend into the telescopic outer cylinder, the opposite ends of the multiple telescopic shafts are fixedly sleeved with a first piston ring and a second piston ring, the first piston ring and the second piston ring are located between the first tube and the second tube, the outer sides of the first tube and the second tube are movably sleeved with piston sleeves, the inner wall of the telescopic outer cylinder close to the first tube and the second tube is fixedly installed with a limiting block, and the opposite ends of the multiple telescopic shafts are respectively fixedly installed with the opposite sides of the corresponding top cutter, bottom cutter and side cutter.

[0011] As a preferred technical solution of the present invention, one end of the first tube and the second tube away from the telescopic outer tube extends out of the outside of the cut-off outer frame, the first tube away from the telescopic outer tube is fixedly installed with a first connector, the second tube away from the telescopic outer tube is fixedly installed with a second connector, the ends of multiple first connectors are fixedly installed with a first gas main pipe, the ends of multiple second connectors are fixedly installed with a second gas main pipe, the port of the first gas main pipe is fixedly installed with a first pump, and the port of the second gas main pipe is fixedly installed with a second pump.

[0012] As a preferred technical solution of the present invention, the auxiliary mechanism includes an auxiliary frame, which is fixedly mounted on the top of the cutting frame on one side away from the bending mechanism, and a third shaft is rotatably mounted on both ends of the auxiliary frame, and auxiliary rollers are fixedly mounted on the bottom of the third shaft, and a second motor is fixedly mounted on one side of the top of the auxiliary frame, and the driving end of the second motor and the top of one of the third shafts are fixedly mounted.

[0013] As a preferred technical solution of the present invention, the supporting mechanism includes an isolation cylinder, which is fixedly installed on the side of the top of the supporting frame away from the bending mechanism, and a limiting frame is fixedly installed on the side of the isolation cylinder away from the cutting mechanism. A flip shaft is rotatably installed in the middle of the limiting frame, and a connecting frame is fixedly installed on the outside of the flip shaft. A support platform is fixedly installed on the top and bottom of the connecting frame. A feed trough and a discharge trough are respectively opened on the top and bottom of the isolation cylinder, and the support platform can be movably clamped in the isolation cylinder. A third motor is fixedly installed on the outside of the limiting frame, and the driving end of the third motor and one end of the flip shaft are fixedly installed.

[0014] A bending method for door frame production comprises the following steps:

[0015] Step 1: Use a mounting frame to mount the cylindrical raw material belt on the top of the mounting frame, and the cylindrical raw material belt is easy to rotate on the top of the mounting frame, unwind the cylindrical raw material belt, pass the strip material at the end of the cylindrical raw material belt between two guide rollers, limit it by a limiting convex ring, and pass it between two first bending rollers, a second bending roller and a third bending roller;

[0016] Step 2: Control and start the first motor, cooperate with the transmission of multiple sprockets and chains, drive multiple drive shafts to rotate synchronously, and then drive multiple first shafts to rotate, and the two guide rollers continuously transmit the strip material. Due to the provision of the first bending convex ring, the second bending convex ring and the third bending convex ring, the width of the first bending convex ring, the second bending convex ring and the third bending convex ring is gradually increased. Through the continuous transmission of the strip material, the first bending convex ring, the second bending convex ring and the third bending convex ring gradually and continuously bend the middle part of the strip material, and form a downward convex bending part in the middle part of the strip material;

[0017] Step 3: The bent piece formed after bending passes through the through slot of the door frame and is placed between the auxiliary rollers on both sides, and the end of the bent piece is placed above the support platform, which provides buffer support for the bent piece to prevent bending before the bent piece is cut off;

[0018] The fourth step is to move the cutting part of the bending part between the top cutter, the bottom cutter and the side cutter, control the first pump to intake air and the second pump to inhale air, and the gas enters the opposite ends of the multiple telescopic outer cylinders through the first air guide main pipe, multiple first connectors and the first tube, and the gas at the opposite ends of the multiple telescopic outer cylinders is discharged through multiple second tubes, the second connector and the second air guide main pipe, thereby driving the first piston ring and the second piston ring to move toward each other, driving the multiple telescopic shafts to move toward each other, thereby driving the top cutter, the bottom cutter and the two side cutters to move toward each other synchronously, the top cutter performs top cutting on the top of the bending part, the bottom cutter performs bottom cutting on the bottom of the bending part, and the two side cutters perform side cutting on the sides of the bending part, thereby realizing synchronous cutting in multiple directions at the top position, the bottom position and the side position of the bending part to prevent deformation of the incision caused by cutting in one direction, and then controlling the first pump to inhale air and the second pump to intake air, driving the top cutter, the bottom cutter and the two side cutters to move synchronously in the opposite directions and reset;

[0019] Step 5. Control and start the second motor to drive one of the third shafts and the auxiliary rollers to rotate, so as to quickly guide the cut bent parts away from the end of the raw material, and according to the moving inertia of the cut bent parts, the cut bent parts are separated from between the auxiliary rollers on both sides, and are placed above the support table and contacted with the limit frame for positioning. Subsequently, control and start the third motor to drive the flipping shaft and the support tables on both sides to rotate and flip, and the support tables are movably connected in the isolation cylinder. The isolation cylinder blocks the cut bent parts until they are flipped to the bottom position, and the cut bent parts are discharged through the discharge chute, and the other support table is flipped to the top to support the subsequent cut bent parts.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By setting up a bending mechanism, the strip raw material is continuously transmitted, and the middle part of the strip raw material is gradually and continuously bent through the first bending convex ring, the second bending convex ring and the third bending convex ring to form a downward convex bent part in the middle part of the strip raw material. Compared with the traditional method of changing the stamping position of the plate and the position of the extrusion tool holder to extrude and bend a single plate at different positions to form a bent part, this equipment can continuously and automatically transmit the strip raw material and continuously and automatically bend it, without the need to manually place a single plate, to improve the production efficiency of the door frame.

[0022] 2. By setting up a cutting mechanism, the top cutter, bottom cutter and two side cutters are controlled to move toward each other synchronously. The top cutter performs top cutting on the top of the bending part, the bottom cutter performs bottom cutting on the bottom of the bending part, and the two side cutters perform side cutting on the sides of the bending part, thereby realizing synchronous cutting in multiple directions at the top, bottom and side positions of the bending part, preventing deformation of the cut caused by cutting in one direction and affecting the bending quality of the bending part.

[0023] 3. By setting up auxiliary mechanisms and using supporting mechanisms, the cut bent parts can be quickly guided, and the support table can provide buffer support for the cut bent parts to prevent bending before the bent parts are cut, which will affect the quality of the bent parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 For the present invention Figure 1 The enlarged view of point A in the middle.

[0027] Figure 3 is a schematic diagram of the structure of the bending mechanism in the present invention,

[0028] Figure 4 For the present invention Figure 3 The enlarged view of point B in the middle.

[0029] Figure 5 It is a partial structural schematic diagram of the bending mechanism in the present invention,

[0030] Figure 6 is a schematic diagram of the structure of the bending mechanism in the present invention,

[0031] Figure 7 For the present invention Figure 6 The enlarged image of point C in the middle.

[0032] Figure 8 is a schematic diagram of the structure of the telescopic member in the present invention,

[0033] Fig. 9 is another structural schematic diagram of the cutting mechanism in the present invention,

[0034] Fig.10 For the present invention Fig. 9 The enlarged view of D in the middle.

[0035] Fig.11 is a schematic diagram of the structure of the auxiliary mechanism in the present invention,

[0036] Fig.12 It is a structural schematic diagram of the support mechanism in the present invention.

[0037] In the figure: 1, base; 2, support frame; 3, bending mechanism; 4, cutting mechanism; 5, auxiliary mechanism; 6, support mechanism; 7, mounting frame; 8, cylindrical raw material belt; 31, U-shaped frame; 32, first axis; 33, card slide seat; 331, rotating seat; 34, second axis; 35, lifting screw; 351, turning handle; 36, guide roller; 361, limiting convex ring; 362, limiting ring groove; 37, first bending roller; 371, first bending convex ring; 372, first bending ring groove; 38, second bending roller; 381, second bending convex ring; 382, ​​second bending ring groove; 39, third bending roller; 391, third bending convex ring; 392, third bending ring groove; 310, driving shaft; 311, sprocket; 312, chain; 313, first motor; 41 , cut off the outer frame; 401, the door frame through-slot; 42, the top cutter; 43, the bottom cutter; 44, the side cutter; 45, the telescopic part; 46, the first connector; 461, the second connector; 47, the first air guide main pipe; 471, the second air guide main pipe; 48, the first pump; 481, the second pump; 451, the telescopic outer cylinder; 4511, the first tube; 4512, the second tube; 452, the telescopic shaft; 453, the first piston ring; 454, the second piston ring; 455, the piston sleeve; 456, the limit block; 51, the auxiliary frame; 52, the third shaft; 53, the auxiliary roller; 54, the second motor; 61, the isolation cylinder; 601, the feed trough; 602, the discharge trough; 62, the limit frame; 63, the turning shaft; 64, the connecting frame; 65, the support table; 66, the third motor. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example: Figure 1-12 As shown, the present invention provides a door frame production bending equipment, including a base 1, a support frame 2 is fixedly installed on the top of the base 1, a bending mechanism 3 is fixedly installed on one side of the top of the support frame 2, a cutting mechanism 4 is fixedly installed on the middle of the top of the support frame 2, an auxiliary mechanism 5 is fixedly installed on the side of the cutting mechanism 4 away from the bending mechanism 3, a support mechanism 6 is fixedly installed on the side of the top of the support frame 2 away from the bending mechanism 3, a mounting frame 7 is fixedly installed on the side of the top of the base 1 close to the bending mechanism 3, a cylindrical raw material belt 8 is detachably and rotatably installed on the top of the mounting frame 7, the cylindrical raw material belt 8 is installed on the top of the mounting frame 7 using the mounting frame 7, and the cylindrical raw material belt 8 is easy to rotate on the top of the mounting frame 7.

[0040] The bending mechanism 3 includes a plurality of evenly distributed U-shaped frames 31, the U-shaped frames 31 are fixedly mounted on the top of the support frame 2, a first shaft 32 is rotatably mounted on the bottom of the U-shaped frame 31, two symmetrically distributed card slide seats 33 are slidably mounted on the top of the U-shaped frame 31, a second shaft 34 is rotatably mounted on the middle of the two card slide seats 33, two symmetrically distributed lifting screws 35 are threadedly mounted on the top of the U-shaped frame 31, a rotating seat 331 is fixedly mounted on the top of the card slide seat 33, and the bottom of the lifting screw 35 is rotatably mounted on the corresponding In the middle of the rotating seat 331, a turning handle 351 is fixedly installed on the top of the lifting screw 35. Manually turning the turning handle 351 drives the lifting screw 35 to rotate, driving the sliding seat 33 and the second shaft 34 to move downward. A group of first shafts 32 and second shafts 34 close to one side of the cylindrical raw material belt 8 are fixedly sleeved with guide rollers 36 on their outer sides, and multiple groups of first shafts 32 and second shafts 34 away from one side of the cylindrical raw material belt 8 are fixedly sleeved with first bending rollers 37, second bending rollers 38 and third bending rollers 39 on their outer sides.

[0041] The two ends of one of the guide rollers 36 are integrally formed with limiting convex rings 361, and the two ends of the other guide roller 36 are provided with limiting ring grooves 362 corresponding to the limiting convex rings 361. When in use, the strip material at the end of the cylindrical raw material belt 8 passes between the two guide rollers 36 and is limited by the limiting convex rings 361 to prevent deviation during continuous transmission of the strip material and improve the stability of subsequent continuous bending of the strip material. The middle part of one of the first bending rollers 37 is integrally formed with a first bending convex ring 371, and the other one is integrally formed with a first bending convex ring 371. A first bending ring groove 372 for use with the first bending convex ring 371 is formed in the middle of one of the first bending rollers 37, a second bending convex ring 381 is formed integrally with the middle of one of the second bending rollers 38, and a second bending ring groove 382 for use with the second bending convex ring 381 is formed in the middle of the other second bending roller 38, a third bending convex ring 391 is formed integrally with the middle of one of the third bending rollers 39, and a third bending convex ring 391 is formed integrally with the middle of the other third bending roller 39, and a The third bending annular groove 392, the width of the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391 are gradually increased, and the strip material at the end of the cylindrical raw material belt 8 passes through the two first bending rollers 37, the second bending roller 38 and the third bending roller 39. Due to the provision of the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391, the width of the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391 is gradually increased, and the strip material is passed through Continuously transmitting, the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391 gradually and continuously bend the middle part of the strip material to form a downward convex bent part in the middle part of the strip material. Compared with the traditional method of changing the stamping position of the plate and the position of the extrusion tool holder to extrude and bend different positions of a single plate to form a bent part, this equipment can continuously and automatically transmit the strip material and continuously and automatically bend it, without the need to manually place a single plate to improve the production efficiency of the door frame.

[0042] The ends of the multiple first shafts 32 are fixedly installed with driving shafts 310, the outer sides of the multiple driving shafts 310 are fixedly sleeved with sprockets 311, the outer sides of the multiple sprockets 311 are meshed with chains 312, and the outer side of one of the U-shaped frames 31 is fixedly installed with a first motor 313, and the driving end of the first motor 313 and the end of one of the driving shafts 310 are fixedly installed. When in use, the first motor 313 is controlled to be turned on, and the transmission of the multiple sprockets 311 and the chain 312 is coordinated to drive the multiple driving shafts 310 to rotate synchronously, thereby driving the multiple first shafts 32 to rotate, thereby continuously transmitting and bending the strip raw materials.

[0043] The cutting mechanism 4 includes a cutting outer frame 41, which is fixedly mounted at the middle of the top of the support frame 2. A door frame through-slot 401 is provided in the middle of the cutting outer frame 41. The bent piece formed after bending passes through the door frame through-slot 401. A top cutting knife 42 is provided at a sliding card near the top position of the door frame through-slot 401 in the cutting outer frame 41. A bottom cutting knife 43 is provided at a sliding card near the bottom position of the door frame through-slot 401 in the cutting outer frame 41. The side portion of the cutting outer frame 41 near the door frame through-slot 401 is provided with a bottom cutting knife 43. The position sliding card is provided with two symmetrically distributed side cutters 44. By controlling and driving the top cutter 42, the bottom cutter 43 and the two side cutters 44 to move toward each other synchronously, the top cutter 42 performs top cutting on the top of the bending part, the bottom cutter 43 performs bottom cutting on the bottom of the bending part, and the two side cutters 44 perform side cutting on the side of the bending part, thereby realizing synchronous cutting in multiple directions at the top position, bottom position and side position of the bending part, preventing the deformation of the cut caused by cutting in one direction, which affects the bending quality of the bending part;

[0044] The top cutting knife 42, the bottom cutting knife 43 and the side cutting knife 44 are provided with a plurality of evenly distributed telescopic parts 45 on the opposite sides thereof, and the telescopic parts 45 include a telescopic outer cylinder 451, and the opposite ends of the plurality of telescopic outer cylinders 451 are integrally formed with a first tube 4511, and the opposite ends of the plurality of telescopic outer cylinders 451 are integrally formed with a second tube 4512, and the telescopic outer cylinder 451, the first tube 4511 and the second tube 4512 are fixedly connected to the cutting outer frame 41, and the opposite sides of the plurality of telescopic outer cylinders 451 are slidably provided with a telescopic shaft 452, and the opposite ends of the plurality of telescopic shafts 452 extend into the telescopic outer cylinder 451, and the plurality of telescopic The opposite ends of the shaft 452 are fixedly sleeved with a first piston ring 453 and a second piston ring 454, the first piston ring 453 and the second piston ring 454 are located between the first tube 4511 and the second tube 4512, the outer sides of the first tube 4511 and the second tube 4512 are movably sleeved with a piston sleeve 455, and the inner wall of the telescopic outer cylinder 451 close to the first tube 4511 and the second tube 4512 is fixedly installed with a limiting block 456, and the opposite ends of the plurality of telescopic shafts 452 are fixedly installed with the opposite sides of the corresponding top cutting knife 42, the bottom cutting knife 43 and the side cutting knife 44; the first tube 4511 and the second tube 4512 are fixedly installed with a first piston ring 453 and the second piston ring 454; One end of the two tubes 4512 away from the telescopic outer tube 451 extends out of the outside of the cut-off outer frame 41, the first tube 4511 is fixedly installed with a first connector 46 at one end away from the telescopic outer tube 451, and the second tube 4512 is fixedly installed with a second connector 461 at one end away from the telescopic outer tube 451. The ends of the plurality of first connectors 46 are fixedly installed with a first gas main pipe 47, and the ends of the plurality of second connectors 461 are fixedly installed with a second gas main pipe 471. The first gas main pipe 47 is fixedly installed with a first pump 48, and the end of the second gas main pipe 471 is fixedly installed with a second pump 481, when cutting off, the first pump 48 is controlled to be turned on to inlet air and the second pump 481 is controlled to inhale air, and the gas enters the opposite ends of the multiple telescopic outer cylinders 451 through the first gas guide main pipe 47, the multiple first connectors 46 and the first tube 4511, and the gas at the opposite ends of the multiple telescopic outer cylinders 451 is discharged through the multiple second tubes 4512, the second connectors 461 and the second gas guide main pipe 471, thereby driving the first piston ring 453 and the second piston ring 454 to move towards each other, driving the multiple telescopic shafts 452 to move towards each other, thereby driving the top cutter 42, the bottom cutter 43 and the two side cutters 44 to move towards each other synchronously;

[0045] On the contrary, the first pump 48 is controlled to start air suction and the second pump 481 is controlled to start air intake, so as to drive the top cutter 42, the bottom cutter 43 and the two side cutters 44 to move backward and reset synchronously.

[0046] The auxiliary mechanism 5 includes an auxiliary frame 51, which is fixedly installed on the top of the cutting outer frame 41 away from the bending mechanism 3. The two ends of the auxiliary frame 51 are rotatably installed with a third shaft 52, and the bottom of the third shaft 52 is fixedly installed with an auxiliary roller 53. The cut bent piece is placed between the auxiliary rollers 53 on both sides. A second motor 54 is fixedly installed on one side of the top of the auxiliary frame 51. The driving end of the second motor 54 and the top of one of the third shafts 52 are fixedly installed. The second motor 54 is controlled to start and drive one of the third shafts 52 and the auxiliary roller 53 to rotate, so as to quickly guide the cut bent piece away from the end of the raw material, and according to the moving inertia of the cut bent piece, the cut bent piece is separated from between the auxiliary rollers 53 on both sides.

[0047] The supporting mechanism 6 includes an isolating cylinder 61, which is fixedly mounted on the side of the top of the supporting frame 2 away from the bending mechanism 3, and a limiting frame 62 is fixedly mounted on the side of the isolating cylinder 61 away from the cutting mechanism 4. A turning shaft 63 is rotatably mounted in the middle of the limiting frame 62, and a connecting frame 64 is fixedly mounted on the outer side of the turning shaft 63. A supporting platform 65 is fixedly mounted on the top and bottom of the connecting frame 64. A feed trough 601 and a discharge trough 602 are respectively provided on the top and bottom of the isolating cylinder 61. According to the moving inertia of the cut bent piece, the cut bent piece is separated from between the auxiliary rollers 53 on both sides and is placed above the supporting platform 65 and contacts the limiting frame 62 for positioning. The supporting platform 65 is used for cutting The broken bent parts are buffered and supported to prevent bending before the bent parts are cut, which affects the quality of the bent parts. The support platform 65 can be movably connected in the isolation cylinder 61. A third motor 66 is fixedly installed on the outer side of the limit frame 62. The driving end of the third motor 66 and one end of the flip shaft 63 are fixedly installed. Then, the third motor 66 is controlled to start to drive the flip shaft 63 and the support platforms 65 on both sides to rotate and flip. The support platform 65 is movably connected in the isolation cylinder 61. The isolation cylinder 61 blocks the cut bent parts until they are flipped to the bottom position. The cut bent parts are discharged through the discharge chute 602, and the other support platform 65 is flipped to the top to support the subsequent cut bent parts.

[0048] A bending method for door frame production comprises the following steps:

[0049] Step 1: Use the mounting frame 7 to mount the cylindrical raw material belt 8 on the top of the mounting frame 7, and the cylindrical raw material belt 8 is convenient for rotating on the top of the mounting frame 7, unwind the cylindrical raw material belt 8, pass the strip material at the end of the cylindrical raw material belt 8 between the two guide rollers 36, limit it by the limiting convex ring 361, and pass it between the two first bending rollers 37, the second bending roller 38 and the third bending roller 39;

[0050] Step 2: Control and start the first motor 313, cooperate with the transmission of the multiple sprockets 311 and the chain 312, drive the multiple drive shafts 310 to rotate synchronously, and then drive the multiple first shafts 32 to rotate, and the two guide rollers 36 continuously transmit the strip material. Due to the provision of the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391, the width of the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391 is gradually increased. Through the continuous transmission of the strip material, the first bending convex ring 371, the second bending convex ring 381 and the third bending convex ring 391 gradually bend the middle part of the strip material continuously, and form a downward convex bending part in the middle part of the strip material;

[0051] Step 3: The bent piece formed after bending passes through the door frame through slot 401 and is placed between the auxiliary rollers 53 on both sides, and the end of the bent piece is placed above the support platform 65, which provides buffer support for the bent piece to prevent bending before the bent piece is cut off;

[0052] Step 4: Move the cutting part of the bending piece to between the top cutter 42, the bottom cutter 43 and the side cutter 44, control the first pump 48 to start air intake and the second pump 481 to start air suction, and the gas enters the opposite ends of the multiple telescopic outer cylinders 451 through the first gas guide main pipe 47, the multiple first connectors 46 and the first pipe 4511, and the gas at the opposite ends of the multiple telescopic outer cylinders 451 is discharged through the multiple second pipes 4512, the second connector 461 and the second gas guide main pipe 471, thereby driving the first piston ring 453 and the second piston ring 454 to move toward each other, driving the multiple telescopic shafts 452 to move toward each other. The top cutter 42, the bottom cutter 43 and the two side cutters 44 move toward each other synchronously, the top cutter 42 performs top cutting on the top of the bending part, the bottom cutter 43 performs bottom cutting on the bottom of the bending part, and the two side cutters 44 perform side cutting on the side of the bending part, thereby realizing synchronous cutting in multiple directions at the top position, the bottom position and the side position of the bending part to prevent deformation of the cut caused by cutting in one direction, and then, the first pump 48 is controlled to start air suction and the second pump 481 is controlled to start air intake, driving the top cutter 42, the bottom cutter 43 and the two side cutters 44 to synchronously move backwards and reset;

[0053] Step five, control the second motor 54 to start and drive one of the third shafts 52 and the auxiliary roller 53 to rotate, so as to quickly guide the cut bent parts away from the end of the raw material, and according to the moving inertia of the cut bent parts, the cut bent parts are separated from between the auxiliary rollers 53 on both sides, and are placed above the support platform 65 and contact the limit frame 62 for positioning, then control the third motor 66 to start and drive the flip shaft 63 and the support platforms 65 on both sides to rotate and flip, the support platform 65 is movably connected to the isolation cylinder 61, the isolation cylinder 61 blocks the cut bent parts until it is flipped to the bottom position, the cut bent parts are discharged through the discharge trough 602, and the other support platform 65 is flipped to the top to support the subsequent cut bent parts.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door frame production bending device, comprising a base (1), characterized in that: A support frame (2) is fixedly mounted on the top of the base (1), a bending mechanism (3) is fixedly mounted on one side of the top of the support frame (2), a cutting mechanism (4) is fixedly mounted in the middle of the top of the support frame (2), an auxiliary mechanism (5) is fixedly mounted on the side of the cutting mechanism (4) away from the bending mechanism (3), a support mechanism (6) is fixedly mounted on the side of the top of the support frame (2) away from the bending mechanism (3), a mounting frame (7) is fixedly mounted on the side of the top of the base (1) close to the bending mechanism (3), and a cylindrical raw material belt (8) is detachably and rotatably mounted on the top of the mounting frame (7).

2. A door frame production bending equipment according to claim 1, characterized in that: The bending mechanism (3) comprises a plurality of evenly distributed U-shaped frames (31), wherein the U-shaped frames (31) are fixedly mounted on the top of the support frame (2), a first shaft (32) is rotatably mounted on the bottom of the U-shaped frame (31), two symmetrically distributed card slide seats (33) are slidably mounted on the top of the U-shaped frame (31), a second shaft (34) is rotatably mounted in the middle of the two card slide seats (33), two symmetrically distributed lifting screws (35) are threadedly mounted on the top of the U-shaped frame (31), and a rotating seat (32) is fixedly mounted on the top of the card slide seat (33). 331), the bottom of the lifting screw (35) is rotatably mounted on the middle of the corresponding rotating seat (331), and the top of the lifting screw (35) is fixedly mounted with a turning handle (351), and a group of first shafts (32) and second shafts (34) close to one side of the cylindrical raw material belt (8) are fixedly sleeved with guide rollers (36) on their outer sides, and a plurality of groups of first shafts (32) and second shafts (34) away from one side of the cylindrical raw material belt (8) are fixedly sleeved with first bending rollers (37), second bending rollers (38) and third bending rollers (39) on their outer sides.

3. A door frame production bending equipment according to claim 2, characterized in that: Both ends of one of the guide rollers (36) are integrally formed with limiting convex rings (361), and both ends of the other guide roller (36) are provided with limiting ring grooves (362) corresponding to the limiting convex rings (361).

4. The door frame production bending equipment according to claim 2, characterized in that: A first bending convex ring (371) is integrally formed in the middle of one of the first bending rollers (37), a first bending ring groove (372) for use with the first bending convex ring (371) is opened in the middle of another of the first bending rollers (37), a second bending convex ring (381) is integrally formed in the middle of one of the second bending rollers (38), a second bending ring groove (382) for use with the second bending convex ring (381) is opened in the middle of another of the second bending rollers (38), a third bending convex ring (391) is integrally formed in the middle of one of the third bending rollers (39), a third bending ring groove (392) for use with the third bending convex ring (391) is opened in the middle of another of the third bending rollers (39), and the widths of the first bending convex ring (371), the second bending convex ring (381) and the third bending convex ring (391) gradually increase.

5. The door frame production bending equipment according to claim 2, characterized in that: A driving shaft (310) is fixedly mounted on the ends of the plurality of first shafts (32), a sprocket (311) is fixedly sleeved on the outer sides of the plurality of driving shafts (310), and a chain (312) is meshedly connected on the outer sides of the plurality of sprockets (311), a first motor (313) is fixedly mounted on the outer side of one of the U-shaped frames (31), and a driving end of the first motor (313) and an end of one of the driving shafts (310) are fixedly mounted.

6. The door frame production bending equipment according to claim 1, characterized in that: The cutting mechanism (4) comprises a cutting outer frame (41), the cutting outer frame (41) being fixedly mounted at the middle of the top end of the support frame (2), a door frame through-slot (401) being provided in the middle of the cutting outer frame (41), a top cutting knife (42) being provided in a sliding manner near the top of the door frame through-slot (401) in the cutting outer frame (41), a bottom cutting knife (43) being provided in a sliding manner near the bottom of the door frame through-slot (401) in the cutting outer frame (41), and a bottom cutting knife (44) being provided in a sliding manner near the bottom of the door frame through-slot (401) in the cutting outer frame (41). Two symmetrically distributed side cutters (44) are provided on the side sliding card of the door frame through-slot (401); the top cutter (42), the bottom cutter (43) and the side cutter (44) are provided with a plurality of evenly distributed telescopic parts (45) on the opposite sides thereof; the telescopic parts (45) include a telescopic outer cylinder (451); the opposite ends of the plurality of telescopic outer cylinders (451) are all integrally formed with a first tube (4511); the opposite ends of the plurality of telescopic outer cylinders (451) are all integrally formed with a second tube (4512); The telescopic outer cylinder (451), the first tube (4511) and the second tube (4512) are fixedly connected to the cut-off outer frame (41); the opposite sides of the plurality of telescopic outer cylinders (451) are slidably connected with telescopic shafts (452); the opposite ends of the plurality of telescopic shafts (452) extend into the telescopic outer cylinder (451); the opposite ends of the plurality of telescopic shafts (452) are fixedly sleeved with a first piston ring (453) and a second piston ring (454); the first piston ring (453) and the second piston ring (454) are fixedly connected to the cut-off outer frame (41); 4) is located between the first tube (4511) and the second tube (4512), the outer sides of the first tube (4511) and the second tube (4512) are movably sleeved with piston sleeves (455), and the inner wall of the telescopic outer cylinder (451) close to the first tube (4511) and the second tube (4512) is fixedly installed with a limit block (456), and the opposite ends of the plurality of telescopic shafts (452) are respectively fixedly installed with the opposite sides of the corresponding top cutting knife (42), bottom cutting knife (43) and side cutting knife (44).

7. The door frame production bending equipment according to claim 6, characterized in that: One end of the first tube (4511) and the second tube (4512) away from the telescopic outer tube (451) extends out of the outside of the cut-off outer frame (41); one end of the first tube (4511) away from the telescopic outer tube (451) is fixedly mounted with a first connector (46); one end of the second tube (4512) away from the telescopic outer tube (451) is fixedly mounted with a second connector (461); a first gas main pipe (47) is fixedly mounted on the ends of a plurality of the first connectors (46); a second gas main pipe (471) is fixedly mounted on the ends of a plurality of the second connectors (461); a first pump (48) is fixedly mounted on the port of the first gas main pipe (47); and a second pump (481) is fixedly mounted on the port of the second gas main pipe (471).

8. The door frame production bending equipment according to claim 6, characterized in that: The auxiliary mechanism (5) comprises an auxiliary frame (51), the auxiliary frame (51) being fixedly mounted on the top of a side of the cutting outer frame (41) away from the bending mechanism (3), the two ends of the auxiliary frame (51) being rotatably mounted with a third shaft (52), the bottom of each of the third shafts (52) being fixedly mounted with an auxiliary roller (53), a second motor (54) being fixedly mounted on one side of the top end of the auxiliary frame (51), and a driving end of the second motor (54) and a top end of one of the third shafts (52) being fixedly mounted.

9. The door frame production bending equipment according to claim 1, characterized in that: The support mechanism (6) comprises an isolation cylinder (61), wherein the isolation cylinder (61) is fixedly mounted on a side of the top end of the support frame (2) away from the bending mechanism (3), and a limiting frame (62) is fixedly mounted on a side of the isolation cylinder (61) away from the cutting mechanism (4). A turning shaft (63) is rotatably mounted in the middle of the limiting frame (62), and a connecting frame (64) is fixedly mounted on the outer side of the turning shaft (63). A support platform (65) is fixedly mounted on the top and bottom ends of the connecting frame (64). A feed trough (601) and a discharge trough (602) are respectively provided on the top and bottom of the isolation cylinder (61), and the support platform (65) can be movably clamped in the isolation cylinder (61). A third motor (66) is fixedly mounted on the outer side of the limiting frame (62), and a driving end of the third motor (66) and one end of the turning shaft (63) are fixedly mounted.

10. A bending method for door frame production according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Use a mounting frame (7) to mount a cylindrical raw material belt (8) on the top of the mounting frame (7), and the cylindrical raw material belt (8) is easy to rotate on the top of the mounting frame (7), unwind the cylindrical raw material belt (8), pass the strip material at the end of the cylindrical raw material belt (8) between two guide rollers (36), limit it by a limiting convex ring (361), and pass it between two first bending rollers (37), a second bending roller (38) and a third bending roller (39); Step 2: Control and start the first motor (313), cooperate with the transmission of the multiple sprockets (311) and the chains (312), drive the multiple drive shafts (310) to rotate synchronously, and then drive the multiple first shafts (32) to rotate, and the two guide rollers (36) continuously transmit the strip material. Due to the provision of the first bending convex ring (371), the second bending convex ring (381) and the third bending convex ring (391), the widths of the first bending convex ring (371), the second bending convex ring (381) and the third bending convex ring (391) are gradually increased. Through the continuous transmission of the strip material, the first bending convex ring (371), the second bending convex ring (381) and the third bending convex ring (391) gradually and continuously bend the middle part of the strip material, and form a downward convex bending part in the middle part of the strip material; Step 3: The bent piece formed after bending passes through the door frame through slot (401) and is placed between the auxiliary rollers (53) on both sides, and the end of the bent piece is placed above the support platform (65), and the support platform (65) provides buffer support for the bent piece to prevent bending before the bent piece is cut off; Step 4: Move the cutting part of the bending part to between the top cutting knife (42), the bottom cutting knife (43) and the side cutting knife (44), control the first pump (48) to start air intake and the second pump (481) to start air suction, and the gas enters the opposite ends of the multiple telescopic outer cylinders (451) through the first gas guide main pipe (47), the multiple first connecting heads (46) and the first pipe (4511), and the gas at the opposite ends of the multiple telescopic outer cylinders (451) is discharged through the multiple second pipes (4512), the second connecting heads (461) and the second gas guide main pipe (471), thereby driving the first piston ring (453) and the second piston ring (454) to move towards each other, driving the multiple telescopic shafts (4 52) move toward each other, thereby driving the top cutter (42), the bottom cutter (43) and the two side cutters (44) to move toward each other synchronously, the top cutter (42) performs top cutting on the top of the bending part, the bottom cutter (43) performs bottom cutting on the bottom of the bending part, and the two side cutters (44) perform side cutting on the side of the bending part, thereby realizing synchronous cutting in multiple directions at the top position, bottom position and side position of the bending part, preventing deformation of the cut caused by single-direction cutting, and then controlling the first pump (48) to start air suction and the second pump (481) to start air intake, driving the top cutter (42), the bottom cutter (43) and the two side cutters (44) to synchronously move backwards and reset; Step 5: Control the second motor (54) to start and drive one of the third shafts (52) and the auxiliary roller (53) to rotate, so as to quickly guide the cut bent parts away from the end of the raw material, and according to the moving inertia of the cut bent parts, the cut bent parts are separated from between the auxiliary rollers (53) on both sides, and are placed above the support platform (65) and contact the limit frame (62) for positioning, and then control the third motor (66) to start and drive the flip shaft (63) and the support platforms (65) on both sides to rotate and flip, and the support platform (65) is movably connected to the isolation cylinder (61), and the isolation cylinder (61) blocks the cut bent parts until they are flipped to the bottom position, and the cut bent parts are discharged through the discharge trough (602), and the other support platform (65) is flipped to the top to support the subsequent cut bent parts.

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