CN117583425A

CN117583425A - Door frame bending device for fireproof door frame production

Info

Publication number: CN117583425A
Application number: CN202311842191.1A
Authority: CN
Inventors: 金泽; 韩立柏; 束晓东; 李绍辉; 张燕良
Original assignee: Wuxi Zhicheng Special Doors And Windows Co ltd
Current assignee: Wuxi Zhicheng Special Doors And Windows Co ltd
Priority date: 2023-12-29
Filing date: 2023-12-29
Publication date: 2024-02-23

Abstract

The invention discloses a door frame bending device for producing a fireproof door frame, which belongs to the technical field of bending devices and comprises a support pedestal, wherein the top of the support pedestal is fixedly connected with a fixed base, a forming support mechanism is fixedly arranged on the fixed base, and a bending and shaping mechanism is movably arranged on the forming support mechanism; the front end of the bottom of the fixed base is provided with a bottom bending mechanism, and the rear end of the top of the fixed base is provided with a rear end bending mechanism; the front end of the main support frame is fixedly provided with a top bending mechanism; bending driving mechanisms are arranged on two sides of the front end of the main support frame. According to the invention, the bending and shaping of the fireproof door frame can be rapidly finished by designing the forming and supporting mechanism, the bending and shaping mechanism, the polygonal bending mechanism, the bending driving mechanism and the reciprocating driving mechanism, so that the production and processing efficiency is greatly improved, and the processing progress in mass production and processing is ensured.

Description

Door frame bending device for fireproof door frame production

Technical Field

The invention belongs to the technical field of bending devices, and particularly relates to a door frame bending device for producing a fireproof door frame.

Background

The fireproof door frame is arranged in important positions such as a channel, a stairwell, a fire elevator and the like in the building, and is matched with the fireproof door fan to jointly play a role in fireproof isolation. The effect of door frame is fixed door leaf, makes it can keep stable when the conflagration, non-deformable or drop to play the effect that prevents the intensity of a fire and spread, prevent fire door frame generally adopts steel to make, has higher intensity and rigidity, can bear great pressure and impact, and prevent that the size of fire door frame needs to match with the door leaf, under the circumstances of guaranteeing the accuracy, just can ensure the compactness and the leakproofness of door leaf.

The fireproof door frame is an important component of the fireproof door, the door frame is generally formed by bending a metal plate through a special bending machine, a plurality of different types of bending devices are arranged on the market at present, the bending devices mainly comprise manually operated bending devices and fully-automatic bending devices, but no matter the manually operated bending devices or the fully-automatic bending devices are used, in the actual processing process, a series of complicated position adjustment needs to be carried out on the metal plate, and the operations of feeding, pushing, turning around, overturning and the like are needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a door frame bending device for producing a fireproof door frame.

The technical scheme adopted for solving the technical problems is as follows: the door frame bending device for producing the fireproof door frame comprises a supporting pedestal, wherein the top of the supporting pedestal is fixedly connected with a fixed base, a forming supporting mechanism is fixedly arranged on the fixed base, and a bending and shaping mechanism is movably arranged on the forming supporting mechanism;

the front end of the bottom of the fixed base is provided with a bottom bending mechanism, and the rear end of the top of the fixed base is provided with a rear end bending mechanism;

the top of the fixed base is fixedly connected with a main support frame, and the front end of the main support frame is fixedly provided with a top bending mechanism;

bending driving mechanisms are arranged on two sides of the front end of the main support frame, and a reciprocating driving mechanism for driving the bending shaping mechanism to move is arranged on one side of the bending driving mechanism.

Further, the fixed base comprises a base body fixed at the top of the supporting pedestal, a plate positioning groove is formed in the base body, a first rectangular hole and a second rectangular hole are formed in the front end of the bottom of the base body respectively, and a limit stop is fixedly connected to one side of the base body.

Through above-mentioned technical scheme, the base body is as bearing structure, sheet metal positioning groove can play location and limiting displacement to the sheet metal of treating processing to guarantee sheet metal machining precision in the follow-up course of working, and first rectangular hole and second rectangular hole can play direction and limiting displacement to the work of bottom bending mechanism, one side fixedly connected with limit stop of base body, after sheet metal processed into the door frame body, bending forming mechanism can follow the door frame body under reciprocating driving mechanism's drive and take out, at this moment, limit stop can play limiting displacement to the tip of door frame body, prevent that the door frame body from following bending forming mechanism synchronous movement, in order to guarantee bending forming mechanism and can follow the door frame body and take out smoothly.

Further, the forming support mechanism comprises a forming die holder fixed on the base body, a bottom groove is formed in the bottom of the forming die holder, a jacking frame is slidably mounted in the bottom groove, and a plurality of reset springs are further mounted between the bottom groove and the jacking frame.

Through the technical scheme, the forming die holder has a specific concave-convex structure, and when the bending and shaping mechanism presses down the metal plate, the metal plate can be bent into the concave-convex structure which is the same as that of the forming die holder, so that the one-time bending and shaping of the complex door frame structure is realized; in addition, because install a plurality of reset springs between bottom recess and the jack-up frame, after the door frame body is bent the shaping completely to after bending shaping mechanism, bottom bending mechanism, rear end bending mechanism, top bending mechanism and bending actuating mechanism reset completely, because the door frame body loses pressure, a plurality of reset springs can jack-up the jack-up frame through self elasticity, thereby can be with the ejecting shaping die holder of door frame body after the shaping, in order to make things convenient for operating personnel to take.

Further, the bending and shaping mechanism comprises a main shaping frame and a preset shaping frame which are matched with the shaping die holder, two sides of the front end of the preset shaping frame are fixedly connected with limiting sliding blocks, two limiting sliding grooves corresponding to the limiting sliding blocks are formed in the rear end of the main shaping frame, and tooth grooves are formed in one side of the front end of the main shaping frame.

According to the technical scheme, the bending and shaping mechanism is used for matching with the forming and supporting mechanism, and when the bending and shaping mechanism is pressed down, the main concave-convex structure of the metal plate can be bent and shaped at one time; in addition, a sliding connection structure design is adopted between the main shaping frame and the pre-shaping frame, the pre-shaping frame can be driven by a bending driving mechanism to press and fix the middle part of the metal plate in advance, and then in the continuous pressing process, the main shaping frame is matched with a shaping die holder to complete one-time bending shaping of the main concave-convex structure; by adopting the sequential pre-pressing structure, the metal plate can be prevented from being displaced when the main shaping frame bends and shapes the metal plate.

Further, the bottom bending mechanism comprises a bottom supporting frame fixed at the front end of the bottom of the base body, two first hydraulic cylinders and two second hydraulic cylinders are respectively arranged at the bottom of the bottom supporting frame, the top ends of the piston rods of the first hydraulic cylinders are fixedly connected with first bending pushing plates, the top ends of the piston rods of the second hydraulic cylinders are fixedly connected with second bending pushing plates, and the first bending pushing plates and the second bending pushing plates are respectively and slidably limited in the first rectangular holes and the second rectangular holes.

Through the technical scheme, the first bending pushing plate can be driven by the two first hydraulic cylinders to lift, the second bending pushing plate can be driven by the two second hydraulic cylinders to lift, and then the first bending pushing plate and the second bending pushing plate can be utilized to bend the metal plate at fixed positions respectively, and in the lifting process of the first bending pushing plate and the second bending pushing plate, the first rectangular hole and the second rectangular hole can respectively play a guiding and limiting role on the lifting of the first bending pushing plate and the second bending pushing plate, so that the processing progress is guaranteed.

Further, the rear end bending mechanism comprises a rear end supporting frame fixed at the top of the fixed base, a third rectangular hole is formed in the center of the front end of the rear end supporting frame, third hydraulic cylinders are arranged on two sides of the rear end supporting frame, and a third bending push plate penetrating through the third rectangular hole is fixedly connected to the front end of a piston rod of each third hydraulic cylinder.

Through the technical scheme, the third bending push plate can move back and forth under the drive of the piston rod of the third hydraulic cylinder, so that the third bending push plate can be utilized to bend the metal plate.

Further, the top bending mechanism comprises a top support frame fixed at the front end of the main support frame, a fourth rectangular hole is formed in the bottom of the top support frame, fourth hydraulic cylinders are installed on two sides of the top support frame, and a fourth bending push plate penetrating through the fourth rectangular hole is fixedly connected to the bottom end of a piston rod of each fourth hydraulic cylinder.

Through the technical scheme, the fourth bending push plate can be driven by the piston rod of the fourth hydraulic cylinder to lift and move, and then the fourth bending push plate can be utilized to bend the metal plate.

Further, the bending driving mechanism comprises two fifth hydraulic cylinders which are arranged on two sides of the front end of the top of the main support frame, two bottom ends of piston rods of the fifth hydraulic cylinders are fixedly connected with fixed frames, two rear ends of the tops of the fixed frames are provided with first round holes, two rear ends of the tops of the fixed frames are fixedly connected with limiting frames, two centers of the tops of the limiting frames are provided with second round holes, two groups of lifting compression rods are slidably connected between the first round holes and the second round holes, the outer walls of the lifting compression rods are sleeved with compression springs, the outer walls of the lifting compression rods are fixedly connected with limiting rings, and the compression springs are located above the corresponding limiting rings.

Through the technical scheme, in an unprocessed state, the bottom of the main shaping frame is contacted with the inner surface of the bottom of the fixed frame, and the bottom ends of the two lifting pressure rods are abutted against the top of the pre-shaping frame under the elastic extrusion action of the compression springs; after the metal sheet is horizontally placed in the sheet positioning groove, the two fifth hydraulic cylinders can drive the main shaping frame and the preset shaping frame to synchronously move downwards through the piston rods, at the moment, the two fixing frames can play a limiting role on two sides of the main shaping frame and the preset shaping frame, in the synchronous moving downwards process of the main shaping frame and the preset shaping frame, the two lifting compression rods can slide relatively under the action of the compression springs between the main shaping frame and the preset shaping frame, the metal sheet is pre-compressed by the preset shaping frame, so that pre-compression fixation of the metal sheet is completed, the tops of the main shaping frame and the preset shaping frame are tightly attached to the inner surface of the top of the fixing frame in the continuous moving downwards process of the two follow-up fixing frames, and the main shaping frame and the preset shaping frame jointly compress the metal sheet, so that one-time bending forming of the concave-convex structure of the metal sheet is completed.

Further, during bending, two ends of the main shaping frame and the preset shaping frame penetrate through the two fixed frames respectively, and the bottom ends of the two lifting compression bars respectively abut against two sides of the top of the preset shaping frame.

Through above-mentioned technical scheme, when processing, two fixed frames can play limiting displacement to the both sides of main design frame and reservation type frame to two fixed frames can drive main design frame and reservation type frame and go up and down in step.

Further, the reciprocating driving mechanism comprises a lifting sliding seat fixed on the outer side of one of the fixed frames, two limiting sliding rails are arranged on the outer side of the lifting sliding seat, a guiding sliding seat is slidably arranged on the outer side of the lifting sliding seat, two guiding sliding grooves corresponding to the limiting sliding rails are formed in one side of the guiding sliding seat, the front end of the guiding sliding seat is fixedly connected with a supporting plate, a through hole penetrating through the center of the front end of the guiding sliding seat is formed in the center of the front end of the guiding sliding seat, a servo motor is mounted at the bottom of the supporting plate, a driving gear is fixedly connected with the top end of an output shaft of the servo motor, and the driving gear is meshed with a tooth groove at the front end of the main shaping frame and used for driving the bending shaping mechanism to reciprocate.

Through the technical scheme, after the metal plate is completely bent and formed into the door frame body, the output shaft of the servo motor can drive the driving gear to synchronously rotate, and when the driving gear rotates, the gear can be meshed to drive the bending and shaping mechanism to integrally move outwards, so that the bending and shaping mechanism can be driven to be pulled out of the formed door frame body; after the blanking of the door frame body is completed, the output shaft of the servo motor reversely rotates, so that the bending and shaping mechanism is driven to move inwards until one end of the bending and shaping mechanism is inserted into the fixed frame on the other side; further, the bending and shaping mechanism can play a role in guiding and limiting the bending and shaping mechanism by the guiding sliding seat in the moving process, so that the bending and shaping mechanism can finish stable horizontal movement.

The beneficial effects of the invention are as follows: (1) According to the invention, the bending and shaping of the fireproof door frame can be rapidly finished by designing the forming and supporting mechanism, the bending and shaping mechanism, the polygonal bending mechanism, the bending driving mechanism and the reciprocating driving mechanism, so that the production and processing efficiency is greatly improved, and the processing progress in mass production and processing is ensured; (2) According to the full-automatic bending device, after the metal plate is fed, the device can rapidly complete full-automatic bending and forming of each side, pushing, turning around, overturning and other operations are not needed, and the production and processing time is greatly saved; (3) According to the invention, by designing the bending shaping mechanism and the bending driving mechanism, in the process that the main shaping frame and the pre-shaping frame synchronously move downwards, the two lifting compression rods can slide relatively under the action of the compression springs, and the pre-shaping frame can pre-compress the metal plate, so that pre-compression fixation of the metal plate is completed, in the subsequent continuous downwards moving process of the two fixed frames, the tops of the main shaping frame and the pre-shaping frame are tightly attached to the inner surface of the top of the fixed frame, and the main shaping frame and the pre-shaping frame jointly compress the metal plate, so that one-time bending shaping of the concave-convex structure of the metal plate can be completed.

Drawings

FIG. 1 is a first view block diagram of the present invention;

FIG. 2 is a second view angle block diagram of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a schematic diagram of the bottom bending mechanism and the rear end bending mechanism of the present invention;

FIG. 7 is a schematic view of the structure of the main body part of the present invention;

FIG. 8 is a front view of a body portion of the present invention;

FIG. 9 is a cross-sectional view taken along B-B in FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

FIG. 11 is a front view of the stationary base of the present invention;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11;

FIG. 13 is a partial enlarged view at B in FIG. 12;

FIG. 14 is a schematic view showing the structure of the bending and shaping mechanism in the withdrawn state;

fig. 15 is a partial enlarged view at D in fig. 14;

FIG. 16 is a schematic view of the mounting structure of the reciprocating drive mechanism of the present invention;

FIG. 17 is a schematic view of a part of the bending drive mechanism of the present invention;

fig. 18 is a schematic structural view of the reciprocating drive mechanism of the present invention.

Reference numerals: 1. a support pedestal; 2. a fixed base; 201. a base body; 202. a plate positioning groove; 203. a first rectangular hole; 204. a second rectangular hole; 205. a limit stop; 3. forming a supporting mechanism; 301. forming a die holder; 302. a bottom groove; 303. a jacking frame; 304. a return spring; 4. bending and shaping mechanism; 401. a main shaping frame; 402. a pre-shaping frame; 403. a limit sliding block; 404. limiting sliding grooves; 405. tooth slots; 5. a bottom bending mechanism; 501. a bottom support frame; 502. a first hydraulic cylinder; 503. a second hydraulic cylinder; 504. a first bending push plate; 505. a second bending push plate; 6. a rear end bending mechanism; 601. a rear end support frame; 602. a third rectangular hole; 603. a third hydraulic cylinder; 604. a third bending push plate; 7. a main support frame; 8. a top bending mechanism; 801. a top support; 802. a fourth rectangular hole; 803. a fourth hydraulic cylinder; 804. a fourth bending push plate; 9. a bending driving mechanism; 901. a fifth hydraulic cylinder; 902. a fixed frame; 903. a first round hole; 904. a limit frame; 905. a second round hole; 906. a lifting pressure lever; 907. a compression spring; 908. a limiting ring; 10. a reciprocating drive mechanism; 1001. lifting the sliding seat; 1002. a limit sliding rail; 1003. a guide slide; 1004. a guide chute; 1005. a support plate; 1006. a through hole; 1007. a servo motor; 1008. a drive gear; 11. a door frame body.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1-13, the door frame bending device for producing a fireproof door frame of this embodiment includes a supporting pedestal 1, a fixed base 2 is fixedly connected to the top of the supporting pedestal 1, the fixed base 2 includes a base body 201 fixed to the top of the supporting pedestal 1, a plate positioning groove 202 is formed in the base body 201, a first rectangular hole 203 and a second rectangular hole 204 are formed in the front end of the bottom of the base body 201, a limit stop 205 is fixedly connected to one side of the base body 201, the base body 201 serves as a supporting structure, the plate positioning groove 202 can play a role in positioning and limiting a metal plate to be processed, so as to ensure the processing precision of the metal plate in the subsequent processing process, the first rectangular hole 203 and the second rectangular hole 204 can play a role in guiding and limiting the operation of the bottom bending mechanism 5, one side of the base body 201 is fixedly connected with a limit stop 205, after the metal plate is processed into the door frame body 11, the bending shaping mechanism 4 can be pulled out from the door frame body 11 under the driving of the reciprocating driving mechanism 10, at this moment, the limit stop 205 can play a role in limiting the end of the door frame body 11, the door frame body 11 is prevented from moving along with the door frame body 11, and the synchronous bending mechanism 4 can be smoothly pulled out from the shaping mechanism 4.

As shown in fig. 1-13, a forming support mechanism 3 is fixedly installed on a fixed base 2, the forming support mechanism 3 comprises a forming die holder 301 fixed on a base body 201, a bottom groove 302 is formed in the bottom of the forming die holder 301, a jacking frame 303 is slidably installed in the bottom groove 302, a plurality of return springs 304 are also installed between the bottom groove 302 and the jacking frame 303, the forming die holder 301 has a specific concave-convex structure, and when a bending and shaping mechanism 4 presses down a metal plate, the metal plate can be bent into the concave-convex structure as the forming die holder 301, so that one-time bending and shaping of a complex door frame structure can be realized; in addition, since the plurality of return springs 304 are installed between the bottom groove 302 and the jacking frame 303, after the door frame body 11 is completely bent and formed, and after the bending and forming mechanism 4, the bottom bending mechanism 5, the rear end bending mechanism 6, the top bending mechanism 8 and the bending driving mechanism 9 are completely reset, the plurality of return springs 304 jack up the jacking frame 303 through the elasticity of the door frame body 11 due to the fact that the door frame body 11 loses pressure, so that the formed door frame body 11 can be ejected out of the forming die holder 301, and an operator can conveniently take the door frame body.

As shown in fig. 1-15, a bending and shaping mechanism 4 is also movably arranged on the shaping and supporting mechanism 3; the bending and shaping mechanism 4 comprises a main shaping frame 401 and a preset shaping frame 402 which are matched with the shaping die holder 301, two sides of the front end of the preset shaping frame 402 are fixedly connected with limiting sliding blocks 403, two limiting sliding grooves 404 corresponding to the limiting sliding blocks 403 are formed in the rear end of the main shaping frame 401, tooth grooves 405 are formed in one side of the front end of the main shaping frame 401, the bending and shaping mechanism 4 is used for being matched with the shaping and supporting mechanism 3, and when the bending and shaping mechanism 4 is pressed down, the concave-convex structure of the main body of the metal plate can be bent and shaped at one time.

In addition, a sliding connection structure design is adopted between the main shaping frame 401 and the pre-shaping frame 402, the pre-shaping frame 402 can be driven by the bending driving mechanism 9 to press and fix the middle part of the metal plate in advance, and then in the continuous pressing process, the main shaping frame 401 is matched with the shaping die holder 301 to complete one-time bending shaping of the main concave-convex structure; by adopting the sequential pre-pressing structure, the metal plate can be prevented from being displaced when the main shaping frame 401 bends and shapes the metal plate.

As shown in fig. 1-6, the bottom bending mechanism 5 is installed at the front end of the bottom of the fixed base 2, the bottom bending mechanism 5 includes a bottom supporting frame 501 fixed at the front end of the bottom of the base body 201, two first hydraulic cylinders 502 and two second hydraulic cylinders 503 are respectively installed at the bottom of the bottom supporting frame 501, the top ends of piston rods of the two first hydraulic cylinders 502 are fixedly connected with first bending pushing plates 504, the top ends of piston rods of the two second hydraulic cylinders 503 are fixedly connected with second bending pushing plates 505, the first bending pushing plates 504 and the second bending pushing plates 505 are respectively limited in the first rectangular holes 203 and the second rectangular holes 204 in a sliding manner, the two first hydraulic cylinders 502 can drive the first bending pushing plates 504 to lift, the two second hydraulic cylinders 503 can drive the second bending pushing plates 505 to lift, and further bending at fixed positions on metal plates by using the first bending pushing plates 504 and the second bending pushing plates 505 respectively, and in the lifting processes of the first bending pushing plates 504 and the second bending pushing plates 505, the first rectangular holes 203 and the second rectangular holes 204 can respectively lift the second bending pushing plates 505 and guide the lifting and limiting functions of the second bending pushing plates 505, and further progress of processing is ensured.

As shown in fig. 1-6, a rear end bending mechanism 6 is arranged at the rear end of the top of the fixed base 2; the rear end bending mechanism 6 comprises a rear end supporting frame 601 fixed at the top of the fixed base 2, a third rectangular hole 602 is formed in the center of the front end of the rear end supporting frame 601, third hydraulic cylinders 603 are mounted on two sides of the rear end supporting frame 601, a third bending push plate 604 penetrating through the third rectangular hole 602 is fixedly connected to the front ends of piston rods of the two third hydraulic cylinders 603, the third bending push plate 604 can move back and forth under the driving of the piston rods of the third hydraulic cylinders 603, and therefore bending processing can be conducted on a metal plate through the third bending push plate 604.

As shown in fig. 8-9, the top of the fixed base 2 is also fixedly connected with a main support frame 7, and the front end of the main support frame 7 is fixedly provided with a top bending mechanism 8; the top bending mechanism 8 comprises a top support frame 801 fixed at the front end of the main support frame 7, fourth rectangular holes 802 are formed in the bottom of the top support frame 801, fourth hydraulic cylinders 803 are mounted on two sides of the top support frame 801, fourth bending pushing plates 804 penetrating through the fourth rectangular holes 802 are fixedly connected to the bottom ends of the piston rods of the two fourth hydraulic cylinders 803, the fourth bending pushing plates 804 can be driven by the piston rods of the fourth hydraulic cylinders 803 to move in a lifting mode, and further the fourth bending pushing plates 804 can be used for bending metal plates.

As shown in fig. 9-17, bending driving mechanisms 9 are installed on two sides of the front end of the main support frame 7, the bending driving mechanisms 9 comprise two fifth hydraulic cylinders 901 installed on two sides of the front end of the top of the main support frame 7, bottom ends of piston rods of the two fifth hydraulic cylinders 901 are fixedly connected with fixed frames 902, first round holes 903 are formed in rear ends of the tops of the two fixed frames 902, limit frames 904 are fixedly connected to rear ends of the tops of the two fixed frames 902, second round holes 905 are formed in centers of the tops of the two limit frames 904, lifting press rods 906 are slidably connected between the two groups of the first round holes 903 and the second round holes, pressing springs 907 are sleeved on outer walls of the two lifting press rods 906, limiting rings 908 are fixedly connected to outer walls of the two lifting press rods 906, the two pressing springs 907 are located above the corresponding limiting rings 908, in an unprocessed state, the bottoms of the main shaping frame 401 can be contacted with the inner surfaces of the bottoms of the fixed frames 902, and the bottom ends of the two lifting press rods 906 can abut against the tops of the pre-shaping frame 402 under the elastic pressing action of the pressing springs 906; after the metal plate is horizontally placed in the plate positioning groove 202, the two fifth hydraulic cylinders 901 can drive the main shaping frame 401 and the pre-shaping frame 402 to synchronously move downwards through the piston rods, at this time, the two fixing frames 902 can play a limiting role on two sides of the main shaping frame 401 and the pre-shaping frame 402, in the synchronous moving downwards process of the main shaping frame 401 and the pre-shaping frame 402, the two lifting compression rods 906 can relatively slide between the main shaping frame 401 and the pre-shaping frame 402 under the action of the compression springs 907, the pre-shaping frame 402 compresses the metal plate in advance, thus pre-tightening fixing of the metal plate is completed, and in the continuous moving downwards process of the two fixing frames 902, the tops of the main shaping frame 401 and the pre-shaping frame 402 can be tightly attached to the inner surface of the top of the fixing frame 902, and the main shaping frame 401 and the pre-shaping frame 402 jointly compress the metal plate, so that one-time bending forming of the concave-convex structure of the metal plate is completed.

During bending processing, two ends of the main shaping frame 401 and the pre-shaping frame 402 respectively penetrate through the two fixed frames 902, bottom ends of the two lifting compression rods 906 respectively abut against two sides of the top of the pre-shaping frame 402, and during processing, the two fixed frames 902 can play a limiting role on two sides of the main shaping frame 401 and the pre-shaping frame 402, and the two fixed frames 902 can drive the main shaping frame 401 and the pre-shaping frame 402 to synchronously lift.

As shown in fig. 14-18, a reciprocating driving mechanism 10 for driving the bending and shaping mechanism 4 to move is installed on one side of the bending driving mechanism 9, the reciprocating driving mechanism 10 comprises a lifting sliding seat 1001 fixed on the outer side of one fixed frame 902, two limit sliding rails 1002 are arranged on the outer side of the lifting sliding seat 1001, a guiding sliding seat 1003 is slidably installed on the outer side of the lifting sliding seat 1001, two guiding sliding grooves 1004 corresponding to the limit sliding rails 1002 are formed on one side of the guiding sliding seat 1003, a supporting plate 1005 is fixedly connected to the front end of the guiding sliding seat 1003, a penetrating through hole 1006 is formed in the center of the front end of the guiding sliding seat 1003, a servo motor 1007 is installed at the bottom of the supporting plate 1005, a driving gear 1008 is fixedly connected to the top end of the output shaft of the servo motor 1007, the driving gear 1008 is meshed with a tooth groove 405 at the front end of the main shaping frame 401 and is used for driving the bending and shaping mechanism 4 to reciprocate, after the metal plate is completely bent and the door frame body 11 is formed, the output shaft of the servo motor 1007 can drive the driving gear 1008 to synchronously rotate, and the driving gear 1008 can be meshed to drive the bending and shaping mechanism 4 to integrally move outwards, and then can be driven to draw out from the shaped door frame body 11.

Further, after the blanking of the door frame body 11 is completed, the output shaft of the servo motor 1007 reversely rotates, so as to drive the bending and shaping mechanism 4 to move inwards until one end of the bending and shaping mechanism 4 is inserted into the fixed frame 902 on the other side; further, in the moving process of the bending and shaping mechanism 4, the guiding sliding seat 1003 can play a role in guiding and limiting the bending and shaping mechanism 4, so as to ensure that the bending and shaping mechanism 4 can finish stable horizontal movement.

The working principle of this embodiment is that, during processing, an operator places a metal plate in the plate positioning groove 202 and completes accurate positioning, then two fifth hydraulic cylinders 901 drive the main shaping frame 401 and the pre-shaping frame 402 to move downwards synchronously through piston rods, in the process that the main shaping frame 401 and the pre-shaping frame 402 move downwards synchronously, two lifting compression rods 906 slide relatively under the action of the compression springs 907 between the main shaping frame 401 and the pre-shaping frame 402, the pre-shaping frame 402 compresses the metal plate in advance, pre-compression fixation of the metal plate is completed, and in the process that the two subsequent fixing frames 902 move downwards continuously, the tops of the main shaping frame 401 and the pre-shaping frame 402 are tightly attached to the inner surface of the top of the fixing frame 902, and the main shaping frame 401 and the pre-shaping frame 402 apply pressure to the metal plate together, so as to complete one-time bending and forming of the concave-convex structure of the metal plate;

meanwhile, the piston rods of the two groups of first hydraulic cylinders 502 and the second hydraulic cylinders 503 extend synchronously, and then the first bending pushing plate 504 and the second bending pushing plate 505 are used for bending the metal plate at fixed positions; after the first bending push plate 504 and the second bending push plate 505 move in place, the third bending push plate 604 is driven by the piston rod of the third hydraulic cylinder 603 to move forward, so that the third bending push plate 604 is utilized to bend the metal plate; after the third bending push plate 604 moves in place, the fourth bending push plate 804 can move downwards under the drive of the piston rod of the fourth hydraulic cylinder 803, so that the fourth bending push plate 804 can be utilized to bend the metal plate at the last side, and the metal plate completely forms the door frame body 11;

after the door frame body 11 is completely bent and formed, the bending and forming mechanism 4 can be pulled out from the door frame body 11 under the drive of the reciprocating driving mechanism 10, and the bending and forming mechanism 4, the bottom bending mechanism 5, the rear end bending mechanism 6, the top bending mechanism 8 and the bending driving mechanism 9 also start to automatically reset, at this time, because the pressure is lost on each side of the door frame body 11, the plurality of reset springs 304 jack up the jack-up frame 303 through the elasticity of the reset springs, so that the formed door frame body 11 can be ejected out of the forming die holder 301, and an operator can take out the processed door frame body 11 at this time.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. Door frame bending device is used in production of fire door frame, including supporting pedestal (1), its characterized in that: the top of the supporting pedestal (1) is fixedly connected with a fixed base (2), a forming supporting mechanism (3) is fixedly arranged on the fixed base (2), and a bending and shaping mechanism (4) is movably arranged on the forming supporting mechanism (3);

the front end of the bottom of the fixed base (2) is provided with a bottom bending mechanism (5), and the rear end of the top of the fixed base (2) is provided with a rear end bending mechanism (6);

the top of the fixed base (2) is also fixedly connected with a main support (7), and the front end of the main support (7) is fixedly provided with a top bending mechanism (8);

bending driving mechanisms (9) are arranged on two sides of the front end of the main support frame (7), and a reciprocating driving mechanism (10) for driving the bending shaping mechanism (4) to move is arranged on one side of the bending driving mechanism (9).

2. The door frame bending device for producing the fireproof door frame according to claim 1, wherein the fixed base (2) comprises a base body (201) fixed at the top of the supporting pedestal (1), a plate positioning groove (202) is formed in the base body (201), a first rectangular hole (203) and a second rectangular hole (204) are respectively formed in the front end of the bottom of the base body (201), and a limit stop (205) is fixedly connected to one side of the base body (201).

3. The door frame bending device for producing the fireproof door frame according to claim 2, wherein the forming supporting mechanism (3) comprises a forming die holder (301) fixed on the base body (201), a bottom groove (302) is formed in the bottom of the forming die holder (301), a jacking frame (303) is slidably mounted in the bottom groove (302), and a plurality of return springs (304) are further mounted between the bottom groove (302) and the jacking frame (303).

4. The door frame bending device for producing the fireproof door frame according to claim 3, wherein the bending and shaping mechanism (4) comprises a main shaping frame (401) and a preset shaping frame (402) which are matched with the shaping die holder (301), limiting sliding blocks (403) are fixedly connected to two sides of the front end of the preset shaping frame (402), two limiting sliding grooves (404) corresponding to the limiting sliding blocks (403) are formed in the rear end of the main shaping frame (401), and tooth grooves (405) are formed in one side of the front end of the main shaping frame (401).

5. The door frame bending device for fireproof door frame production according to claim 2, wherein the bottom bending mechanism (5) comprises a bottom supporting frame (501) fixed at the front end of the bottom of the base body (201), two first hydraulic cylinders (502) and two second hydraulic cylinders (503) are respectively installed at the bottom of the bottom supporting frame (501), a first bending push plate (504) is fixedly connected to the top end of a piston rod of each first hydraulic cylinder (502), a second bending push plate (505) is fixedly connected to the top end of a piston rod of each second hydraulic cylinder (503), and the first bending push plate (504) and the second bending push plate (505) are respectively and slidably limited in a first rectangular hole (203) and a second rectangular hole (204).

6. The door frame bending device for fireproof door frame production according to claim 1, wherein the rear end bending mechanism (6) comprises a rear end supporting frame (601) fixed at the top of the fixed base (2), a third rectangular hole (602) is formed in the center of the front end of the rear end supporting frame (601), third hydraulic cylinders (603) are installed on two sides of the rear end supporting frame (601), and the front ends of piston rods of the two third hydraulic cylinders (603) are fixedly connected with a third bending push plate (604) penetrating through the third rectangular hole (602).

7. The door frame bending device for producing the fireproof door frame according to claim 1, wherein the top bending mechanism (8) comprises a top supporting frame (801) fixed at the front end of the main supporting frame (7), a fourth rectangular hole (802) is formed in the bottom of the top supporting frame (801), fourth hydraulic cylinders (803) are respectively installed on two sides of the top supporting frame (801), and a fourth bending push plate (804) penetrating through the fourth rectangular hole (802) is fixedly connected to the bottom ends of the piston rods of the two fourth hydraulic cylinders (803).

8. The door frame bending device for producing fireproof door frames according to claim 4, wherein the bending driving mechanism (9) comprises two fifth hydraulic cylinders (901) installed on two sides of the front end of the top of the main support frame (7), the bottom ends of piston rods of the two fifth hydraulic cylinders (901) are fixedly connected with fixed frames (902), the rear ends of the tops of the two fixed frames (902) are provided with first round holes (903), the rear ends of the tops of the two fixed frames (902) are fixedly connected with limiting frames (904), the centers of the tops of the two limiting frames (904) are provided with second round holes (905), lifting compression rods (906) are slidably connected between the two groups of the first round holes (903) and the second round holes (905), the outer walls of the two lifting compression rods (906) are sleeved with compression springs (907), the outer walls of the two lifting compression rods (906) are fixedly connected with limiting rings (908), and the two compression springs (907) are located above the corresponding limiting rings (908).

9. The door frame bending device for producing the fireproof door frame according to claim 8, wherein during bending, two ends of the main shaping frame (401) and the pre-shaping frame (402) respectively penetrate through the two fixed frames (902), and bottom ends of the two lifting compression rods (906) respectively abut against two sides of the top of the pre-shaping frame (402).

10. The door frame bending device for fireproof door frame production according to claim 4, wherein the reciprocating driving mechanism (10) comprises a lifting sliding seat (1001) fixed on the outer side of one of the fixed frames (902), two limit sliding rails (1002) are arranged on the outer side of the lifting sliding seat (1001), a guide sliding seat (1003) is slidably arranged on the outer side of the lifting sliding seat (1001), two guide sliding grooves (1004) corresponding to the limit sliding rails (1002) are formed in one side of the guide sliding seat (1003), a supporting plate (1005) is fixedly connected to the front end of the guide sliding seat (1003), a penetrating through hole (1006) is formed in the center of the front end of the guide sliding seat (1003), a servo motor (1007) is arranged at the bottom of the supporting plate (1005), a driving gear (1008) is fixedly connected to the top end of an output shaft of the servo motor (1007), and the driving gear (1008) is meshed with a tooth groove (405) at the front end of the main shaping frame (401) for driving the bending shaping mechanism (4) to reciprocate.