CN107225791B

CN107225791B - Quick die change device

Info

Publication number: CN107225791B
Application number: CN201710513842.0A
Authority: CN
Inventors: 王军领; 金魏; 仲太生; 詹俊勇; 周智伟
Original assignee: Yangli Group Corp ltd
Current assignee: Yangli Group Corp ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2023-05-16
Anticipated expiration: 2037-06-29
Also published as: CN107225791A

Abstract

The invention provides a quick die changing device in the field of die changing machinery, which comprises a die changing trolley and a die changing platform, wherein the die changing trolley comprises a frame for placing a die frame, rollers are arranged at the bottom of the frame, a driving mechanism is arranged in the frame and drives the trolley to walk on a track matched with the rollers, the die changing platform comprises 4 upright posts I which are arranged in a rectangular shape, a transmission device and a lifting device for lifting the die frame, the transmission device is connected with the 2 upright posts I which are parallel to the moving direction of the trolley, the transmission device can move in the transverse and longitudinal directions, the transmission device can move to different front transmission die frames of a press workbench, die frame libraries for placing the die frames are arranged at two ends of the die changing trolley, the die frame libraries are perpendicular to the moving direction of the die changing trolley, the die changing trolley walks along the track, and the trolley track extends to the front side of the press; the invention realizes the replacement of the die carrier under different press working tables, and has high automation degree and high die replacement efficiency.

Description

Quick die change device

Technical Field

The invention relates to the technical field of die changing devices, in particular to a device for quickly changing a die carrier of a press.

Background

The press is a machine tool for pressing blanks, and the blanks are deformed and broken by applying pressure to obtain required parts, so that the press has high efficiency and practicability, has irreplaceable functions in manufacturing industry, but when parts are punched, die frames are easily damaged, and a die core between an upper die frame and a lower die frame needs to be replaced after a period of punching.

In the prior art, chinese patent with a patent name of "a press mold changing device" is disclosed, its patent application date is 2013.11.29, application number is 201310638731.4, grant date is 2015.11.25, grant date is CN 103737960B, this mold changing device includes lifting guide rail set up in press table, a driving device for driving lifting guide rail to rise or descend and mold changing trolley, the vehicle cooperation of mold changing trolley is set up in the trolley guide rail, the mold changing trolley can move between first position and second position along the trolley guide rail, when the trolley is in first position, mold changing is carried out on press, when the trolley is in second position, mold changing trolley is loaded and unloaded to mold changing trolley, this design, all need to install lifting guide rail and driving device on each press, result in press structure is more complicated, when mold changing is carried out on different presses, need independent mold changing device to each press, cause waste of resources, realize mold changing and unloading 2 mold changing actions through the movement of mold changing trolley to different positions, mold changing trolley is low in efficiency.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to overcome the defects in the prior art, solve the technical problem that the die change under different presses can not be realized through one device, and provide a quick die change device which can realize the die change under different press tables and has high automation degree and high die change efficiency.

The purpose of the invention is realized in the following way: the utility model provides a quick die change device, includes retooling dolly and retooling platform, retooling dolly is including the frame that is used for placing the die carrier, the frame bottom is equipped with the gyro wheel, is equipped with actuating mechanism in the frame, actuating mechanism drive retooling dolly walk on the track with gyro wheel complex, retooling platform is including being the first, transmission device of 4 stands that the rectangle was arranged and the hoisting device who is used for promoting the die carrier, all is connected with transmission device on the first 2 stands that are on a parallel with dolly direction of movement, and transmission device can be in horizontal longitudinal direction upper movement, transmission device can be to the different die press workstation preceding transmission die carrier, the both ends of retooling dolly all are equipped with the die carrier storehouse that is used for placing the die carrier, and the die carrier storehouse is perpendicular with the direction of movement of retooling dolly, the dolly track extends to the press front side.

When the die changing device works, the transmission device is transported to the front of the press workbench of the die frame to be replaced according to the requirement, the die frame on the press workbench is transported to the die changing trolley, when the die changing trolley faces the die frame warehouse, the old die frame is pulled to one die frame warehouse, the new die frame is pushed to the die changing trolley from the other die frame warehouse, the die changing trolley moves to the front side of the press workbench, the new die frame is replaced to the press, the die changing trolley moves reversely, the die changing trolley faces the die frame warehouse, the old die frame is pushed to the die changing trolley, the transmission device moves upwards, the lifting device drives the upper die frame to move upwards, a new die core is placed on the transmission device, the staff replaces the old die core between the upper die frame and the lower die frame, after the die core is replaced, the lifting device drives the upper die frame to move downwards until the upper die frame is completely matched with the lower die frame, the lifting device is released from the upper die frame, and the die changing is finished; according to the invention, the transmission of the die frames in the working tables of different presses can be completed according to actual needs through the arrangement of the transmission device, the die changing trolley can automatically move and transport the die frames, the automation degree is high, the die changing efficiency is improved, the die frame warehouse is arranged to realize the replacement of a new die frame, the die core replacing time is saved, and the die changing efficiency is further improved; the invention can be applied to the replacement work of the die carrier in the press.

In order to realize the horizontal and longitudinal movement of the transmission device, the transmission device comprises one end of a horizontal supporting seat and a plurality of bendable joint arms which are transversely arranged on a first upright post, the other end of the horizontal supporting seat extends towards the outer direction of the first upright post, two rows of horizontal guide rails I which are mutually parallel in the upper and lower directions are arranged on the front side of the horizontal supporting seat, the first horizontal guide rail is slidably connected with one end of a horizontal sliding seat, the other end of the horizontal sliding seat is arranged on the rear side of a vertical supporting seat, the vertical supporting seat is vertical to the horizontal supporting seat, two rows of vertical guide rails which are mutually parallel in the vertical direction are arranged on the front side of the vertical supporting seat, one end of the vertical sliding seat is slidably connected with the vertical guide rail, the other end of the vertical sliding seat is provided with an arm supporting seat, the vertical supporting seat is fixedly connected with the fixed end of a lifting hydraulic cylinder, a lifting rod of the lifting hydraulic cylinder is fixedly connected with the arm supporting seat, an upper connecting seat and a lower connecting seat which are mutually parallel in the upper and lower directions are arranged on the arm supporting seat, the joint arm end part of the head end between the upper connecting seat and the lower connecting seat is correspondingly provided with an upper support and a lower support, a support tube is fixedly arranged between the upper support seat and the lower support seat, the vertical support is vertical support rail is vertical to the vertical guide rail, one end of the vertical support seat is connected with one end of the upper support seat and the lower support seat is fixedly connected with a lower support roller, the lower support seat through a lower support shaft, the upper support is fixedly connected with a lower support, and the lower support seat is fixedly provided with a lower support flange, and the lower support seat through a lower support, and the lower support seat; an upper shaft coaxial with the lower shaft is fixed on the upper side of the upper support, the upper shaft is connected with the upper connecting seat through a tapered roller bearing II, an upper flange is fixedly arranged on the upper side of the upper connecting seat, a boss II which abuts against the outer ring of the tapered roller bearing II is arranged on the lower side of the upper flange, the upper shaft penetrates through the upper flange in the upper axial direction, a thrust ball bearing is rotatably connected between the upper flange and the upper shaft, and a conveying plate is arranged on the upper side of the tail end joint arm; in the design, the horizontal and longitudinal movement of the conveying device is realized, the conveying plate can move to different press machine work tables to convey the die frames, the die frames can be automatically conveyed to the die changing trolley, when the die changing trolley is placed between die frame libraries, the upper die frames and the lower die frames are loosened, the bending joint arms enable the upper shafts and the lower shafts to rotate so as to realize the folding of the joint arms, the bending of the joint arms drives the bending of the conveying plate, so that a new die core on the conveying plate is placed on the lower side of the upper die frames, the one-time conveying of the die frames is completed through the arrangement of the conveying device, and the die changing efficiency is improved.

In order to realize the horizontal movement of the vertical supporting seat, the transmission device further comprises a horizontal sliding seat II, the horizontal sliding seat II comprises a horizontal part and a vertical part, an accommodating groove is formed in the horizontal supporting seat, at least 2 linear drivers are arranged in the accommodating groove of the horizontal supporting seat, the driving end of one linear driver is fixedly connected with the fixed end of the other linear driver through the vertical part of the horizontal sliding seat, two rows of horizontal guide rails II which are parallel to each other are fixedly connected on the inner wall of the horizontal supporting seat, the horizontal part of the horizontal supporting seat is slidably connected with the horizontal guide rails II, the fixed end of the linear driver at the head end is fixedly connected with the horizontal supporting seat, the linear driver at the head end is closely abutted to the other end of the horizontal supporting seat, and the driving end of the linear driver at the tail end is fixedly connected with the vertical supporting seat; the extending end of the linear driver at the head end corresponds to the press working table in the front-back direction; the design realizes the horizontal movement of the vertical supporting seat, so that the transporting plate moves to the front of the working tables of different presses, and the replacement of the die carrier in the different presses is realized.

In order to further improve the reliability of the movement of the vertical sliding seat, an upper limit plate and a lower limit plate are respectively arranged on the upper part and the lower part of the vertical supporting seat, and the vertical sliding seat is limited to slide between the upper limit plate and the lower limit plate.

In order to further improve the structural strength of the horizontal supporting seat, the transmission device further comprises at least one second upright post used for supporting the horizontal supporting seat, and the second upright post is fixedly connected with the horizontal supporting seat; the conveying plate is provided with a plurality of vacuum chucks which are used for sucking the bottom side of the die frame, and the vacuum chucks generate vacuum through an air path to adsorb the die frame; the setting of vacuum chuck makes the die carrier adsorbed on the transport plate, prevents that the die carrier from moving in series on the transport plate, improves the stability of transport plate transmission die carrier.

In order to realize automatic movement and braking of the die changing trolley, a die frame guide rail I which is parallel to the left side and the right side is arranged on the upper side of the frame, two rows of parallel bearing rollers are vertically arranged between the die frame guide rails I, and a braking mechanism, a die frame push-pull mechanism, a die frame positioning mechanism and a die frame lifting mechanism are also arranged in the frame; the driving mechanism comprises a first speed reducer, a first chain wheel is arranged at the output end of the first speed reducer, a second chain wheel is coaxially connected to a roller at the bottom of the trolley, and the first chain wheel is in transmission connection with the second chain wheel through a first chain; the brake mechanism comprises a friction roller arranged on a roller shaft, a brake cylinder is fixedly arranged on the periphery of the friction roller, and a brake block for holding the friction roller when braking is arranged at the tail end of a piston rod of the brake cylinder; the die carrier push-pull mechanism is used for pulling the die carrier into the trolley along the die carrier guide rail I from the press machine workbench or pushing the die carrier to the press machine workbench from the trolley, the die carrier push-pull mechanism comprises a chain wheel and chain mechanism driven by a speed reducer II, a chain II of the chain wheel and chain mechanism is arranged between the die carrier guide rails I in parallel, a moving frame I is fixed on the chain II, a sliding rail is matched with the lower side of the moving frame I, and a hook I which is convenient for pulling the die carrier is further arranged on the moving frame I; the die carrier positioning mechanism comprises a lifting limit column for positioning the die carrier at the upper position of the die changing trolley, the bottom of the limit column is controlled to lift by a lifting cylinder, and a baffle for limiting the die carrier at the upper limit position of a die carrier guide rail is also arranged on the frame; the die carrier lifting mechanism is correspondingly provided with four groups along the directions of die carrier guide rails on two sides, the position of the die carrier guide rail I, which corresponds to the die carrier lifting mechanism, is provided with a disconnection section, the die carrier lifting mechanism comprises a lifting table wedged with the disconnection section of the die carrier guide rail I, the bottom of the lifting table is provided with a lifting hydraulic cylinder, the lifting table is just flush with the die carrier guide rail I when being jacked by the lifting hydraulic cylinder so as to facilitate the die carrier to move along the die carrier guide rail I, and when the lifting table descends, the die carrier descends along with the lifting table so that the die carrier bottom plane just contacts with a bearing roller on the frame so as to facilitate the die carrier to laterally move out of the die changing trolley; in the design, the driving mechanism is arranged to realize automatic movement of the die changing trolley, the brake mechanism is arranged to facilitate accurate parking of the die changing trolley, the die frame push-pull mechanism is arranged to facilitate moving the die frame into or out of the die changing trolley, and the die frame positioning mechanism is arranged to prevent the die frame from moving in series on the die changing trolley when the die changing trolley moves; the setting of die carrier elevating system is convenient for adjust the die carrier height on the retooling dolly, and under the normal condition, the elevating cylinder jack-up elevating platform to with die carrier guide rail one parallel and level, thereby when the die carrier just is in the elevating platform, thereby adjust the height of die carrier in step through elevating cylinder height adjustment elevating platform, when reducing the elevating platform, make die carrier bottom plane just in time with bearing roller rolling contact, can follow the side direction with the die carrier shift out retooling dolly.

In order to improve the moving stability of the die changing trolley along the rail, the rail extends to the workbench of the press machine, a supporting seat is arranged at the bottom side of the rail, and a plurality of guide plates matched with the outer side wall guide of the roller are arranged at the outer side of the supporting seat; the guide plates enable the die changing trolley to stably move along the rails, and reliability of the transportation die frame is improved.

In order to achieve lifting of the upper die carrier, the lifting device comprises a fixing frame and lifting hydraulic cylinders, wherein the fixing frame is fixedly arranged on the upper sides of 4 upright posts, the fixing ends of the lifting hydraulic cylinders are fixedly connected to the upper sides of the fixing frame, the extending ends of piston rods of the lifting hydraulic cylinders are connected with lifting frames for fixing the upper die carrier, the fixing frame is also provided with anti-falling cylinders and 4 guide sleeves which are arranged in a rectangular mode, guide rods are slidably arranged in the guide sleeves, and the bottoms of the guide rods are connected with the lifting frames; the center of the fixing frame is provided with a falling-preventing rod, the falling-preventing rod is provided with a falling-preventing hole, the extending end of a piston rod of the falling-preventing cylinder can be just clamped into the falling-preventing hole, and the bottom of the falling-preventing rod is fixedly connected with the lifting frame; the lifting hydraulic cylinders are arranged in number and are symmetrically arranged about the center of the lifting frame in the length direction; in this design, the lifting of the upper die carrier is realized in the action of the lifting hydraulic cylinder, and the unsafe problem brought when the lifting hydraulic cylinder breaks away from the crane is avoided in the setting of anti-falling rod and dropping cylinder, further improves hoisting device's fail safe nature.

In order to further improve die changing efficiency, the die carrier warehouse comprises a base, wherein two rows of die carrier guide rails II with the front and rear directions being parallel to each other and two rows of limit seats with the front and rear directions being parallel to each other are arranged on the upper side of the base, a motor is arranged in the base, the output end of the motor is in transmission connection with a chain III, a movable frame II is fixedly connected on the upper side of the chain III, a hook II convenient for pulling the die carrier is arranged on the movable frame II, a plurality of guide wheels matched with the guide of the outer side wall of the die carrier are arranged on the inner side of the limit seat, the limit seats are arranged on the base of the die carrier guide rails II outwards, and the upper side of the die carrier guide rails II is flush with the upper side of the die carrier guide rails I; in the design, a die carrier warehouse at one side of the die changing trolley is used for recovering an old lower die carrier, a die carrier warehouse at the other side of the die changing trolley is used for placing a new lower die carrier, a hook II on a moving frame II hooks the new lower die carrier, a motor works, the motor drives a chain III to move, and the chain III drives the moving frame to push the new lower die carrier to move towards the direction of the die changing trolley, so that the new lower die carrier is automatically placed on the die changing trolley; and a second hook of a second movable frame in the frame base at one side of the die changing trolley hooks the old lower die frame, and the old lower die frame is pulled to a second die frame guide rail.

In order to further improve the reliability of the movement of the die changing trolley, a limiting plate for limiting the continuous movement of the die changing trolley is arranged at one end of the rail far away from the press machine workbench, and when the idler wheels are abutted on the limiting plate, the die frame is just under the lifting frame; the design is convenient for the cooperation of the upper die carrier and the lifting frame.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a schematic perspective view of the third embodiment of the present invention.

Fig. 5 is a top view of the mold changing trolley of the present invention.

Fig. 6 is a view in the A-A direction of fig. 5.

Fig. 7 is a B-B view of fig. 5.

Fig. 8 is a view in the C-C direction of fig. 5.

Fig. 9 is a D-D view of fig. 5.

Fig. 10 is a schematic perspective view of a mold changing trolley in the present invention.

Fig. 11 is a perspective view showing a connection structure between a vertical support base and an articulated arm in the transmission device of the present invention.

Fig. 12 is a top view of a connection structure between a vertical support and an articulated arm in the transmission device of the present invention.

Fig. 13 is an H-H view of fig. 12.

Fig. 14 is a partial enlarged view E of the present invention.

Fig. 15 is a partial enlarged view G of the present invention.

Fig. 16 is a partial enlarged view F of the present invention.

Wherein, 1 press workbench, 2 guide plates, 3 supporting seats, 4 tracks, 5 mold changing trolleys, 501 mold frame guide rails, 502 moving frames, 503 slide rails, 504 speed reducers, 505 baffles, 506 frames, 507 chains, 508 lifting platforms, 509 chains, 510 chain wheels, 511 chain wheels, 512 bearing rollers, 513 rollers, 514 lifting hydraulic cylinders, 515 hooks, 516 friction rollers, 517 brake blocks, 518 brake cylinders, 519 roller shafts, 520 lifting cylinders, 521 limiting columns, 522 speed reducers, 6 upright columns, 7 transmission devices, 701 vertical supporting seats, 702 linear drivers, 703 horizontal guide rails, 704 horizontal sliding seats, 705 vertical guide rails, 706 upper limiting plates, 707 horizontal guide rails, 708 horizontal supporting seats, 709 vacuum chucks, 710 joint arms, 711 lower connecting seats, the device comprises a 712 arm supporting seat, a 713 upper connecting seat, a 714 conveying plate, a 715 vertical sliding seat, a 716 upper support, a 717 lower limit plate, a 718 lifting hydraulic cylinder, a 719 lower support, a 720 tapered roller bearing I, a 721 lower shaft, a 722 upper shaft, a 723 thrust ball bearing, a 724 tapered roller bearing II, a 725 supporting tube, a 726 lower flange, a 727 upper flange, a 728 horizontal part, a 729 vertical part, a 730 horizontal sliding seat I, an 8 lifting device, a 801 lifting hydraulic cylinder, a 802 falling prevention rod, a 803 guide rod, a 804 fixing frame, a 805 guide sleeve, a 806 lifting frame, a 807 falling prevention cylinder, a 9 die frame, a 10 upright post I, a 11 die frame warehouse, a 1101 limit seat, a 1102 moving frame II, a 1103 chain III, a 1104 die frame guide rail II, a 1105 base, a 1106 II, a 1107 motor, a 1108 guide wheel and a 12 limit plate.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The quick die changing device comprises a die changing trolley 5 and a die changing platform, wherein the die changing trolley 5 comprises a frame 506 for placing a die frame 9, rollers 513 are arranged at the bottom of the frame 506, a driving mechanism is arranged in the frame 506, the driving mechanism drives the die changing trolley 5 to walk on a track 4 matched with the rollers 513, the die changing platform comprises 4 upright posts 10 which are arranged in a rectangular mode, a transmission device 7 and a lifting device 8 for lifting the die frame, the transmission device 7 is connected to the 2 upright posts 10 which are parallel to the moving direction of the trolley, the transmission device 7 can move in the transverse and longitudinal directions, the transmission device 7 can move to the front of different press machine work tables 1 to transmit the die frame 9, a warehouse 11 for placing the die frame 9 is arranged at two ends of the die changing trolley 5, the warehouse 11 is perpendicular to the moving direction of the die changing trolley 5, and the trolley track 4 extends to the front side of the press machine.

In order to realize the horizontal and longitudinal movement of the transmission device 7, the transmission device 7 comprises one end of a horizontal supporting seat 708 and a plurality of bendable joint arms 710 which are transversely arranged on a first upright post 10, the other end of the horizontal supporting seat 708 extends towards the outer direction of the first upright post 10, two rows of horizontal guide rails 707 which are parallel to each other and are in the upper and lower directions are arranged on the front side of the horizontal supporting seat 708, the horizontal guide rails 707 are slidably connected with one end of the horizontal sliding seat 730, the other end of the horizontal sliding seat 730 is arranged on the rear side of the vertical supporting seat 701, the vertical supporting seat 701 is perpendicular to the horizontal supporting seat 708, two rows of vertical guide rails 705 which are parallel to each other and are arranged on the front side of the vertical supporting seat 701, one end of the vertical sliding seat 715 is slidably connected with the vertical guide rails 705, the other end of the vertical sliding seat 715 is provided with an arm supporting seat 712, the vertical supporting seat 701 is fixedly connected with the fixed end of a lifting hydraulic cylinder 718, the lifting rod of the lifting hydraulic cylinder 718 is fixedly connected with the arm supporting seat 712, an upper connecting seat 713 and a lower connecting seat 711 which are parallel to each other up and down, the joint arm 710 of the front end between the upper connecting seat 713 and the lower connecting seat is correspondingly provided with an end of the joint arm support 710, the front end of the head end between the upper connecting seat 713 and the lower connecting seat is provided with a tapered roller support seat 719, the upper end and the lower end of the lower connecting seat is fixedly connected with a bearing support 720, the upper shaft support is fixedly connected with a lower shaft support 720, the lower shaft of a bearing support is provided with a flange support, the lower shaft support, and a lower shaft support is arranged; an upper shaft 722 coaxial with the lower shaft 721 is fixed on the upper side of the upper support 716, the upper shaft 722 is connected with the upper connecting seat 713 through a tapered roller bearing II 724, an upper flange 727 is fixedly arranged on the upper side of the upper connecting seat 713, a boss II which abuts against the outer ring of the tapered roller bearing II 724 is arranged on the lower side of the upper flange 727, the upper shaft 722 upwards penetrates through the upper flange 727, a thrust ball bearing 723 is rotatably connected between the upper flange 727 and the upper shaft 722, and a conveying plate 714 is arranged on the upper side of the tail end joint arm 710.

In order to realize the horizontal movement of the vertical supporting seat 701, the transmission device 7 further comprises a second horizontal sliding seat 704, the second horizontal sliding seat 704 comprises a horizontal part 728 and a vertical part 729, the horizontal supporting seat 708 is provided with a containing groove, at least 2 linear drivers 702 are arranged in the containing groove of the horizontal supporting seat 708, between every two adjacent linear drivers 702, the driving end of one linear driver 702 is fixedly connected with the fixing end of the other linear driver 702 through the vertical part 729 of the horizontal sliding seat, two rows of horizontal guide rails 703 in parallel with each other are fixedly connected on the inner wall of the horizontal supporting seat 708, the horizontal part 728 of the horizontal supporting seat 708 is slidably connected with the second horizontal guide rail 703, the fixing end of the first linear driver 702 is fixedly connected with the horizontal supporting seat 708, the first linear driver 702 is tightly abutted against the other end of the horizontal supporting seat 708, and the driving end of the last linear driver 702 is fixedly connected with the vertical supporting seat 701; the protruding end of the linear actuator 702 at the head end corresponds to the press table 1 in the front-rear direction.

In order to further improve the reliability of the movement of the vertical sliding seat 715, the upper and lower portions of the vertical supporting seat 701 are respectively provided with an upper limit plate 706 and a lower limit plate 717, and the vertical sliding seat 715 is restricted to slide between the upper limit plate 706 and the lower limit plate 717.

In order to further improve the structural strength of the horizontal supporting seat 708, the transmission device 7 further comprises at least one second upright post 6 for supporting the horizontal supporting seat 708, and the second upright post 6 is fixedly connected with the horizontal supporting seat 708; the transport plate 714 is provided with a plurality of vacuum chucks 709 for sucking the bottom side of the die carrier 9, and the vacuum chucks 709 generate vacuum through an air path to realize the suction of the die carrier 9.

In order to realize automatic movement and braking of the die changing trolley 5, a first die frame guide rail 501 which is parallel to the left and right is arranged on the upper side of the frame 506, two rows of parallel bearing rollers 512 are vertically arranged between the first die frame guide rails 501, and a braking mechanism, a die frame push-pull mechanism, a die frame positioning mechanism and a die frame lifting mechanism are also arranged in the frame 506; the driving mechanism comprises a first speed reducer 504, a first chain wheel 511 is arranged at the output end of the first speed reducer 504, a second chain wheel 510 is coaxially connected to a roller 513 at the bottom of the trolley, and the first chain wheel 511 and the second chain wheel 510 are in transmission connection through a first chain 509; the braking mechanism comprises a friction roller 516 arranged on a roller shaft 519, a braking cylinder 518 is fixedly arranged on the periphery of the friction roller 516, and a braking block 517 used for holding the friction roller 516 when braking is arranged at the tail end of a piston rod of the braking cylinder 518; the die carrier push-pull mechanism is used for pulling the die carrier 9 into the trolley along the die carrier guide rail I501 from the press workbench 1 or pushing the die carrier 9 to the press workbench 1 from the trolley, the die carrier push-pull mechanism comprises a chain wheel and chain mechanism driven by a speed reducer II 522, a chain II 507 of the chain wheel and chain mechanism is arranged between the die carrier guide rails I501 in parallel, a movable frame I502 is fixed on the chain II 507, a sliding rail 503 is matched with the lower side of the movable frame I502, and a hook I515 which is convenient for pulling the die carrier is also arranged on the movable frame I502; the die carrier positioning mechanism comprises a lifting limiting column 521 for positioning the die carrier 9 at the position on the die changing trolley 5, the bottom of the limiting column 521 is controlled to lift by a lifting cylinder 520, and a baffle 505 for limiting the die carrier 9 at the limit position on a die carrier guide rail 501 is also arranged on the frame 506; four groups of die carrier lifting mechanisms are correspondingly arranged on the die carrier guide rails 501 on the two sides in the front-back left-right direction, the die carrier guide rails 501 are provided with disconnecting sections at positions corresponding to the die carrier lifting mechanisms, each die carrier lifting mechanism comprises a lifting table 508 wedged with the disconnecting section of the die carrier guide rail 501, a lifting hydraulic cylinder 514 is arranged at the bottom of each lifting table 508, when the lifting tables 508 are jacked up by the lifting hydraulic cylinders 514, the lifting tables 508 are just flush with the die carrier guide rails 501 so that the die carrier 9 can move along the die carrier guide rails 501, and when the lifting tables 508 are descended, the die carrier 9 descends along with the lifting tables 508 to enable the bottom plane of the die carrier 9 to just contact with the bearing rollers 512 on the frame 506 so that the die carrier 9 can move out of the die changing trolley 5 laterally.

In order to improve the moving stability of the die changing trolley 5 along the track 4, the track 4 extends to the press workbench 1, a supporting seat 3 is arranged at the bottom side of the track 4, and a plurality of guide plates 2 matched with the outer side wall guide of the roller 513 are arranged at the outer side of the supporting seat 3; the arrangement of the guide plate 2 enables the die changing trolley 5 to stably move along the track 4, and the reliability of the transportation die frame 9 is improved.

In order to realize lifting of the upper die carrier, the lifting device 8 comprises a fixing frame 804 and a lifting hydraulic cylinder 801, wherein the fixing frame 804 is fixedly arranged on the upper side of the first 10 upright posts, the fixing end of the lifting hydraulic cylinder 801 is fixedly connected to the upper side of the fixing frame 804, the extending end of a piston rod of the lifting hydraulic cylinder 801 is connected with a lifting frame 806 for fixing the upper die carrier, the fixing frame 804 is also provided with an

anti-falling cylinder

807 and 4 guide sleeves 805 which are arranged in a rectangular shape, guide rods 803 are slidably arranged in the guide sleeves 805, and the bottoms of the guide rods 803 are connected with the lifting frame 806; the center of the fixing frame 804 is provided with a falling-preventing rod 802, the falling-preventing rod 802 is provided with a falling-preventing hole, the extending end of a piston rod of a falling-preventing cylinder 807 can be just clamped into the falling-preventing hole, and the bottom of the falling-preventing rod 802 is fixedly connected with a lifting frame 806; the lifting hydraulic cylinders 801 are provided in 2 numbers, and the lifting hydraulic cylinders 801 are symmetrically arranged with respect to the center of the lifting frame 806 in the longitudinal direction.

In order to further improve die changing efficiency, the die carrier warehouse 11 comprises a base 1105, two rows of die carrier guide rails II 1104 with the front and back directions being parallel to each other and two rows of limit seats 1101 with the front and back directions being parallel to each other are arranged on the upper side of the base 1105, a motor 1107 is arranged in the base 1105, the output end of the motor 1107 is in transmission connection with a chain III 1103, a movable frame II 1102 is fixedly connected on the upper side of the chain III 1103, a hook II 1106 convenient for pulling the die carrier 9 is arranged on the movable frame II 1102, a plurality of guide wheels 1108 matched with the outer side walls of the die carrier 9 in a guiding mode are arranged on the inner side of the limit seats 1101, the limit seats 1101 are arranged on the base 1105 outside the die carrier guide rails II 1104, and the upper side of the die carrier guide rails II 1104 is flush with the upper side of the die carrier guide rails I501.

In order to further improve the reliability of the movement of the die changing trolley 5, a limiting plate 12 for limiting the continuous movement of the die changing trolley 5 is arranged at one end of the rail 4 far away from the press workbench 1, and when the roller 513 is abutted on the limiting plate 12, the die frame 9 is just under the lifting frame 806.

It should be noted that, the linear actuator 702 is preferably a single-rod hydraulic cylinder in this embodiment; in this embodiment 3 press tables 1 are arranged.

In the working process of the invention, the transmission device 7 is transported to the front of the press workbench 1 of which the die frame 9 needs to be replaced according to the requirement, taking the die frame 9 of the left press workbench 1 to be replaced as an example, specifically, the piston rod of the linear driver 702 is continuously retracted, the linear driver 702 drives the vertical supporting seat 701 to move leftwards, the vertical supporting seat 701 drives the transportation plate 714 to horizontally move leftwards, when the transportation plate 714 horizontally moves to the front of the left press workbench 1, the lifting hydraulic cylinder 718 acts, the lifting hydraulic cylinder 718 ascends or descends, the transportation plate 714 is arranged below the die frame 9, the die frame 9 is moved to the transportation plate 714, the vacuum sucker 709 is generated by the air channel to absorb the die frame 9 on the transportation plate 714, the telescopic rod of the linear driver 702 is controlled to continuously extend, when the vertical supporting seat 701 horizontally moves to one end of the horizontal supporting seat 708, the linear driver 702 stops acting, the speed reducer one 504 acts, the first speed reducer 504 drives the first sprocket 511 to rotate, the first sprocket 511 drives the second sprocket 510 to rotate through the first chain 509, the second sprocket 510 drives the roller shaft 519 to rotate, the roller 513 of the die changing trolley 5 moves along the track 4 towards the direction of the conveying plate 714, at the moment, the joint arm 710 bends, the joint arm 710 drives the upper shaft 722 and the lower shaft 721 to rotate, the joint arm 710 bends to the conveying plate 714 to be right above the die changing trolley 5, the die frame 9 is conveyed onto the first die frame guide rail 501, the die frame 9 is arranged on the die changing trolley 5, the piston rod of the lifting hydraulic cylinder 514 extends to enable the lifting table 508 to be flush with the first die frame guide rail 501, the die frame 9 is placed more stably, when the die changing trolley 5 is abutted against the baffle 505, the lifting cylinder 520 lifts the limiting column 521 to fix the die frame 9, the die frame 9 is prevented from being moved in a serial manner when the die changing trolley 5 moves, the first speed reducer 504 acts reversely, the die changing trolley 5 is reversely moved to the position right below the lifting frame 806, a motor 1107 on one die frame warehouse 11 acts to drive a chain III 1103 to push the movable frame to move towards the die changing trolley 5, a hook II 1106 hooks the die frame 9, the motor 1107 reversely acts, a movable frame II 1102 pulls the die frame 9 to a die frame guide rail II 1104, a motor 1107 on the other die frame warehouse 11 acts, the movable frame II 1102 pushes a new die frame 9 to move towards the die changing trolley 5, the new die frame 9 is placed on the die changing trolley 5, a speed reducer I504 acts to enable the die changing trolley 5 to move to the position right below a conveying plate 714, the new die frame 9 is placed on the conveying plate 714, a linear driver 702 drives a vertical supporting seat 701 to move leftwards, when the conveying plate 714 horizontally moves to the front of a left press workbench 1, the new die frame 9 is replaced into a press, and the press can immediately work; when the die carrier 9 is replaced, the lifting hydraulic cylinder 801 acts and drives the lifting frame 806 to descend, when the lifting frame 806 is clung to the upper die carrier, the lifting frame 806 and the upper die carrier are fastened together, the lifting hydraulic cylinder 801 acts reversely and drives the lifting frame 806 to move upwards, and when the lifting hydraulic cylinder 801 moves upwards to a proper position, the lifting hydraulic cylinder 801 stops acting and the lifting frame 806 is stationary; the other transmission device 7 acts, a new mold core is placed on the transport plate 714, the joint arm 710 is bent, the transport plate 714 is placed under the upper mold frame, the lifting rod of the lifting hydraulic cylinder 718 continuously extends, the lifting hydraulic cylinder 718 drives the vertical sliding seat 715 to slide upwards along the vertical guide rail 705, the new mold core is replaced on the upper mold frame, the joint arm 710 is bent to the outer side of the lifter, the lifting hydraulic cylinder 801 drives the lifting frame 806 to move downwards until the upper mold frame and the lower mold frame are matched again, mold replacement is completed, and the replaced mold frame 9 is ready for use by the next press; according to the invention, the transmission of the die frames 9 in different press tables 1 can be completed according to actual needs through the arrangement of the transmission device 7, the die changing trolley 5 can automatically move and transport the die frames 9, the degree of automation is high, the die changing efficiency is improved, the arrangement of the die frame library 11 realizes the replacement of a new die frame 9, and the die core is replaced while the new die frame 9 is transported into the press, so that the die changing efficiency is further improved; the invention can be applied to the replacement work of the die carrier 9 in the press.

The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.

Claims

1. The utility model provides a quick die change device, includes the retooling dolly, the retooling dolly is including the frame that is used for placing the die carrier, the frame bottom is equipped with the gyro wheel, is equipped with actuating mechanism in the frame, actuating mechanism drive dolly walk on the track with gyro wheel complex, its characterized in that: the die changing platform comprises 4 upright posts I which are arranged in a rectangular mode, a transmission device and a lifting device for lifting an upper die carrier, wherein the transmission device is connected to the 2 upright posts I which are parallel to the moving direction of the trolley, the transmission device can move in the transverse and longitudinal directions, the transmission device can move to the front of different press machine working tables to transmit the die carrier, die carrier libraries for placing the die carrier are arranged at two ends of the die changing trolley, the die carrier libraries are perpendicular to the moving direction of the die changing trolley, and the track extends to the front side of the press machine; the transmission device comprises one end of a horizontal supporting seat and a plurality of bendable joint arms, wherein the one end of the horizontal supporting seat is transversely arranged on a first upright post, the other end of the horizontal supporting seat extends towards the first upright post in an outward direction, two rows of horizontal guide rails I in the upper and lower directions which are parallel to each other are arranged on the front side of the horizontal supporting seat, the first horizontal guide rails are slidably connected with one end of the horizontal sliding seat, the other end of the horizontal sliding seat is arranged on the rear side of a vertical supporting seat, the vertical supporting seat is vertical to the horizontal supporting seat, two rows of vertical guide rails in the vertical directions which are parallel to each other are arranged on the front side of the vertical supporting seat, one end of the vertical sliding seat is slidably connected with the vertical sliding seat, the other end of the vertical sliding seat is provided with an arm supporting seat, the vertical supporting seat is fixedly connected with a fixed end of a lifting hydraulic cylinder, a lifting rod of the lifting hydraulic cylinder is fixedly connected with the arm supporting seat, an upper connecting seat and a lower connecting seat which are parallel to each other up and down are arranged on the arm supporting seat, the joint arm end parts of the head end between the upper connecting seat and the lower connecting seat are correspondingly provided with an upper support and a lower support, a support tube is fixed between the upper support and the lower support, the lower support is fixedly connected with the lower side of the vertical support seat, the lower support is provided with the vertical support and the lower side of the vertical support and the lower support is provided with a roller, the lower side of the roller is fixedly connected with the lower side of the lifting seat by the upper support roller, the upper support roller and the lower support is provided with the lower roller, the lower support roller is provided with the lower roller by the roller; an upper shaft coaxial with the lower shaft is fixed on the upper side of the upper support, the upper shaft is connected with the upper connecting seat through a tapered roller bearing II, an upper flange is fixedly arranged on the upper side of the upper connecting seat, a boss II which abuts against the outer ring of the tapered roller bearing II is arranged on the lower side of the upper flange, the upper shaft penetrates through the upper flange in the upper axial direction, a thrust ball bearing is rotatably connected between the upper flange and the upper shaft, and a conveying plate is arranged on the upper side of the tail end joint arm; the upper side of the frame is provided with a first die carrier guide rail which is parallel left and right, two rows of parallel bearing rollers are vertically arranged between the first die carrier guide rails, and a brake mechanism, a die carrier push-pull mechanism, a die carrier positioning mechanism and a die carrier lifting mechanism are also arranged in the frame; the driving mechanism comprises a first speed reducer, a first chain wheel is arranged at the output end of the first speed reducer, a second chain wheel is coaxially connected to a roller at the bottom of the trolley, and the first chain wheel is in transmission connection with the second chain wheel through a first chain; the brake mechanism comprises a friction roller arranged on a roller shaft, a brake cylinder is fixedly arranged on the periphery of the friction roller, and a brake block for holding the friction roller when braking is arranged at the tail end of a piston rod of the brake cylinder; the die carrier push-pull mechanism is used for pulling the die carrier into the trolley along the die carrier guide rail I from the press machine workbench or pushing the die carrier to the press machine workbench from the trolley, the die carrier push-pull mechanism comprises a chain wheel and chain mechanism driven by a speed reducer II, a chain II of the chain wheel and chain mechanism is arranged between the die carrier guide rails I in parallel, a moving frame I is fixed on the chain II, a sliding rail is matched with the lower side of the moving frame I, and a hook I which is convenient for pulling the die carrier is further arranged on the moving frame I; the die carrier positioning mechanism comprises a lifting limit column for positioning the die carrier at the upper position of the die changing trolley, the bottom of the limit column is controlled to lift by a lifting cylinder, and a baffle for limiting the die carrier at the upper limit position of a die carrier guide rail is also arranged on the frame; the die carrier lifting mechanism is correspondingly provided with four groups along the directions of die carrier guide rails on two sides, the position of the die carrier guide rail I, which corresponds to the die carrier lifting mechanism, is provided with a disconnection section, the die carrier lifting mechanism comprises a lifting table wedged with the disconnection section of the die carrier guide rail I, the bottom of the lifting table is provided with a lifting hydraulic cylinder, the lifting table is just flush with the die carrier guide rail I when being jacked by the lifting hydraulic cylinder so as to facilitate the die carrier to move along the die carrier guide rail I, and when the lifting table descends, the die carrier descends along with the lifting table so that the die carrier bottom plane just contacts with a bearing roller on the frame so as to facilitate the die carrier to laterally move out of the die changing trolley; the lifting device comprises a fixing frame and lifting hydraulic cylinders, wherein the fixing frame is fixedly arranged on the upper sides of 4 upright posts, the fixing ends of the lifting hydraulic cylinders are fixedly connected to the upper sides of the fixing frame, the extending ends of piston rods of the lifting hydraulic cylinders are connected with lifting frames for fixing the upper die frames, the fixing frame is also provided with anti-falling cylinders and 4 guide sleeves which are arranged in a rectangular mode, guide rods are slidably arranged in the guide sleeves, and the bottoms of the guide rods are connected with the lifting frames; the center of the fixing frame is provided with a falling-preventing rod, the falling-preventing rod is provided with a falling-preventing hole, the extending end of a piston rod of the falling-preventing cylinder can be just clamped into the falling-preventing hole, and the bottom of the falling-preventing rod is fixedly connected with the lifting frame; the lifting hydraulic cylinders are arranged in number of 2, and the lifting hydraulic cylinders are symmetrically arranged about the center of the lifting frame in the length direction.

2. A quick die change apparatus as defined in claim 1, wherein: the transmission device further comprises a second horizontal sliding seat, the second horizontal sliding seat comprises a horizontal part and a vertical part, an accommodating groove is formed in the second horizontal sliding seat, at least 2 linear drivers are arranged in the accommodating groove of the second horizontal sliding seat, the driving end of one linear driver is fixedly connected with the fixing end of the other linear driver through the vertical part of the second horizontal sliding seat, two rows of horizontal guide rails in parallel with each other are fixedly connected on the inner wall of the second horizontal sliding seat, the horizontal part of the second horizontal sliding seat is slidably connected with the second horizontal guide rail, the fixing end of the first linear driver is fixedly connected onto the second horizontal sliding seat, the linear driver at the first end abuts against the other end of the second horizontal sliding seat, and the driving end of the last linear driver is fixedly connected with the vertical sliding seat; the extending end of the linear driver at the head end corresponds to the press working table in the front-rear direction.

3. A quick die change apparatus as defined in claim 2, wherein: the upper part and the lower part of the vertical supporting seat are respectively provided with an upper limiting plate and a lower limiting plate, and the vertical sliding seat is limited to slide between the upper limiting plate and the lower limiting plate.

4. A quick mould change device according to claim 2 or 3, characterized in that: the transmission device further comprises at least one second upright post used for supporting the horizontal supporting seat, and the second upright post is fixedly connected with the horizontal supporting seat; the conveying plate is provided with a plurality of vacuum chucks which are used for sucking the bottom side of the die frame, and the vacuum chucks generate vacuum through the air circuit to adsorb the die frame.

5. A quick mould change device according to claim 2 or 3, characterized in that: the rail extends to the press workbench, a supporting seat is arranged at the bottom side of the rail, and a plurality of guide plates matched with the outer side wall of the roller are arranged at the outer side of the supporting seat.

6. A quick die change apparatus as defined in claim 5, wherein: the die carrier storehouse includes the base, the base upside is equipped with two rows of die carrier guide rails second that are parallel to each other and two rows of spacing seats that are parallel to each other in the fore-and-aft direction, be equipped with the motor in the base, the output transmission of motor is connected with the chain III, the chain three upside has linked firmly and has moved the frame second, is equipped with the hook second of being convenient for pull the die carrier on the moving frame second, a plurality of guide pulleys with die carrier lateral wall direction complex have been arranged to spacing seat inboard, spacing seat sets up on die carrier guide rail second outside base, die carrier guide rail second's upside flushes with die carrier guide rail first's upside.

7. A quick mould change device according to claim 2 or 3, characterized in that: and one end of the rail far away from the press workbench is provided with a limiting plate for limiting the continuous movement of the die changing trolley, and when the idler wheels are abutted on the limiting plate, the die frame is just under the lifting frame.