CN111745002A - Plate spring hot bending forming unit and hot bending forming process - Google Patents
Plate spring hot bending forming unit and hot bending forming process Download PDFInfo
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- CN111745002A CN111745002A CN202010569299.8A CN202010569299A CN111745002A CN 111745002 A CN111745002 A CN 111745002A CN 202010569299 A CN202010569299 A CN 202010569299A CN 111745002 A CN111745002 A CN 111745002A
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- plate
- conveying
- bending forming
- heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the technical field of plate spring processing equipment and technology, and particularly discloses a plate spring hot bending forming unit and a bending forming technology, wherein the equipment comprises a heating furnace, a bending forming machine and a connecting device, and the technology comprises the following steps: s1, placing the steel plate to be bent on the turnable conveying device, heating the steel plate by the heating furnace, wherein the turnable conveying device drives the steel plate to stay in a preheating zone of the furnace body for 10-60S during heating, preheating the steel plate, and then continuously conveying the steel plate into the furnace body for heating; and S2, transferring the heated steel plate into a bending forming machine through a connecting device to be bent. The invention has the beneficial effects that: the bent steel plates have performance consistency, the performance of the plate spring formed by the bent steel plates is more stable, and a plurality of steel plates are processed simultaneously, so that the production efficiency is improved, and the bent steel plates are energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of plate spring processing, in particular to a plate spring hot bending forming unit and a hot bending forming process.
Background
The spring is formed by overlapping a single steel plate or a plurality of steel plates. The plate spring has a large damping capacity due to friction between plates, and is widely used in suspensions of automobiles, tractors, and railway vehicles.
In the processing process of the plate spring, the steel plate needs to be heated, bent and quenched, in the technical scheme of the heating furnace in the prior art, only a single plate spring can be heated, and only the end part of the plate spring can be heated, so that the heating efficiency is low and the function is single; when heating the leaf spring, do not preheat the leaf spring, directly heat, there is certain influence to the performance of steel sheet, and the heating mode who adopts is fuel combustion heating, has certain polluted environment's problem.
In the prior art, for example, in a chinese patent publication (patent No. ZL201821019249.7, patent name: a steel plate bending machine), technical solutions of bending machines are as follows: the utility model provides a steel plate bending machine, includes the frame, set up in the footstock at frame top, the drive arrangement who is connected with the footstock, with the frame sliding connection on bend the mechanism and bear the mechanism of bending under in the frame, drive arrangement is used for the drive on bend the mechanism and slide from top to bottom, on bend the mechanism and include first crossbeam and the cutter of being connected with first crossbeam, first crossbeam with frame sliding connection, the mechanism of bending includes the second crossbeam down, the second crossbeam seted up with the sword groove that the cutter is corresponding, steel plate bending machine is still including setting up the laser emitter in the frame, laser emitter is used for with the light beam that laser emitter sent aims at the sword groove.
However, the above technical solutions still have the following problems: only a single plate can be bent, the bending degree of the plate made of the plate spring in the same group can be inconsistent, the integrity of the plate spring formed by a plurality of plates is poor, and the processing efficiency of the processing method is low
Therefore, it is necessary to provide a plate spring hot bending forming machine set and a hot bending forming tool to solve the above technical problems.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide a plate spring hot bending forming unit, which can heat and bend different steel plates forming a plate spring at the same time, so that the steel plates have consistent performance, the performance of the formed plate spring is more stable, and a plurality of steel plates are processed at the same time, so that the production efficiency is improved, and the plate spring hot bending forming unit is energy-saving and environment-friendly.
The second purpose of the invention is to provide a hot bending forming process for the plate spring, which utilizes the machine set and has convenient operation and high production efficiency.
The first purpose of the invention is realized by the following technical scheme:
a plate spring hot bending forming unit comprises a heating furnace, a bending forming machine and a connecting device;
the heating furnace comprises a furnace body and a steerable conveying device, wherein the steerable conveying device comprises a first conveying section and a second conveying section, the rear half section of the first conveying section is arranged on the front side in the furnace body, the second conveying section of the steerable conveying device is arranged in the furnace body, the tail end of the second conveying section extends out of the furnace body, the furnace body comprises a first heating section and a second heating section, electric heating components are arranged in the first heating section and the second heating section, a preheating zone is arranged at the front end of the first heating section, and a liftable heat insulation plate is arranged between the first heating section and the second heating section;
the bending forming machine comprises: the bending device comprises a machine body, wherein a conveying device is arranged on the machine body and penetrates through the middle lower part of the machine body, a bending device is arranged on the machine body on the upper part of the conveying device, the bending device comprises a movable die assembly and a pressing die assembly which are matched with each other, and the bending device also comprises a supporting assembly for supporting the movable die assembly;
the engaging device is characterized in that: the setting is between heating furnace and bending forming machine, including the heat preservation cover body, be equipped with the transportation slide rail on the inner wall of the heat preservation cover body, be equipped with the transportation piece on the transportation slide rail, the lower extreme of transportation piece be equipped with the electro-magnet, the telescopic link of transporting the cylinder is connected to one side of transporting the piece.
By adopting the technical scheme: each steel sheet of treating the bending is heated to the heating furnace, when the heating begins, preheat the steel sheet earlier, guaranteed that the performance of steel sheet does not receive the direct heating and suffers destruction, the steel sheet after the heating is delivered to bending forming machine through linking device and is carried out bending forming, above-mentioned equipment group, can handle a plurality of steel sheets of constituteing a leaf spring simultaneously, the production efficiency has been improved, the electro-magnet intermittent type formula circular telegram of linking device, after furnace body end circular telegram adsorbs the steel sheet, the transport cylinder promotes to transport the piece and gos forward to bending forming machine's conveyor and goes out, put down the steel sheet.
The present invention in a preferred example may be further configured to: first conveying section and second conveying section on all be equipped with conveying assembly, the bottom of first conveying section be equipped with the revolving stage, the downside of revolving stage is equipped with the fixed station, still including making the revolving stage relative fixed station pivoted slewing mechanism.
By adopting the technical scheme: the first conveying section and the second conveying section are arranged in a split mode, the first conveying section can rotate through the rotating mechanism, the first conveying section and the second conveying section can be combined into a whole according to needs, the steel plate conveying the whole body enters the heating furnace to be heated, the steel plate conveying part can also be partially turned to be used in a split mode, the steel plate conveying part enters the furnace body to be heated, and the steel plate conveying part is curled into a rolling lug, so that the multipurpose of the heating furnace is achieved.
The present invention in a preferred example may be further configured to: the fixed table is provided with a rotary slide rail, the lower side of the rotary table is provided with a slide groove matched with the rotary slide rail, the rotating mechanism comprises a driving air cylinder arranged on the fixed table, a telescopic rod of the driving air cylinder is connected with a rack, and the rack is meshed with a gear fixed on the rotary table;
the conveying assembly comprises a plurality of first driven sprockets arranged on the cross beam of the first conveying frame and the cross beam of the second conveying frame and a first driving sprocket arranged at the outer end of the cross beam, the driving sprocket is driven by a motor, and chain type conveying belts are meshed on the first driving sprocket and the first driven sprocket.
By adopting the technical scheme: the rotary sliding rail is arranged on the fixed table in a semicircular shape, the rotary table can rotate with the fixed table through the matching between the sliding groove and the rotary sliding rail, in order to realize the rotation, a rotating mechanism is arranged, a telescopic rod of the air cylinder extends out through a driving air cylinder fixed on the fixed table to drive a rack to move towards one direction, the rack is meshed with a gear to drive the gear to rotate, the gear is fixedly connected with the rotary table to drive the rotary table to rotate relative to the fixed table, and the combination or the split of the first conveying section and the second conveying section is realized; first support body through with revolving stage fixed connection, realized the fixed of first transmission section with the revolving stage, the conveying subassembly is used for conveying the steel sheet that is used for making the leaf spring of treating the heating, enters into the furnace body and heats.
The present invention in a preferred example may be further configured to: the chain type conveying belt comprises two first chains meshed with a first driving chain wheel and a first driven chain wheel, a plurality of rotating shafts are arranged between the two first chains, a segmented high-temperature-resistant conveying screen plate is arranged between the rotating shafts, and a push plate is further arranged on a single rotating shaft.
By adopting the technical scheme: the chain type conveying belt with the structure has high temperature resistance, can convey the steel plate to enter the furnace body for heating, and the push plate plays a role in pushing the steel plate, so that the steel plate does not slide on the conveying belt.
The present invention in a preferred example may be further configured to: the bending forming machine comprises a machine body, wherein a conveying device is arranged on the machine body and penetrates through the middle lower part of the machine body, a bending device is arranged on the machine body on the upper part of the conveying device, and the bending device comprises a movable die assembly, a pressing die assembly and a supporting assembly, wherein the movable die assembly and the pressing die assembly are matched with each other, and the supporting assembly is used for supporting the movable die assembly.
By adopting the technical scheme: treat crooked steel sheet, carry to the organism in through conveyor, the movable mould subassembly descends this moment, conveyor continues to drive the steel sheet antedisplacement, the steel sheet is at conveyor's last initial condition, its one end tilt up that gets into the organism, be vertical state in the later stage of being convenient for, carry to be to the mode under the movable mould subassembly, the movable mould subassembly begins to descend, under the effect of blockking up of each movable mould and conveyor continue to carry, the steel sheet is vertical state gradually, the support assembly descends and is used for supporting the movable mould subassembly here simultaneously, the moulding-die subassembly descends, promote the movable mould to the steel sheet through pneumatic cylinder drive moulding-die, make the steel sheet bending gradually, crooked in-process, conveyor stops temporarily, wait for after the completion of bending, continue the operation, carry out the steel sheet that the bending was accomplished, bring next group of steel sheet into the organism simultaneously.
The present invention in a preferred example may be further configured to: the conveying device at least comprises two groups of second driving chain wheels and second driven chain wheels, the first driving chain wheel is driven by a stepping motor, second chains are arranged on the second driving chain wheels and the second driven chain wheels, a conveying belt is arranged between the two second chains, and a plurality of groups of steel plate inclined supporting plate groups are arranged on the conveying belt; each group of the plate spring inclined supporting plate groups comprises a first inclined supporting plate and a second inclined supporting plate, and the height of the first inclined supporting plate in the machine body is higher than that of the second inclined supporting plate.
By adopting the technical scheme: the second driving sprocket is driven by step motor and rotates to drive the rotation of second driven sprocket, drive the conveyer belt and rotate, wherein the conveyer belt has high temperature resistance, and steel sheet bearing diagonal group makes the steel sheet be in the device of slope on the conveyer belt, and the later stage of being convenient for is bent the steel sheet is vertical. Being close to the direction that the steel sheet got into the organism for first inclined support board, being the second inclined support board behind the first inclined support board, the height that highly is higher than the second inclined support board of first inclined support board, aim at makes the steel sheet slope, the one end that enters into the organism earlier in addition is higher than the one end that enters into the organism afterwards.
The present invention in a preferred example may be further configured to: the top of the machine body is provided with a centralized installation plate beam, and the movable die assembly, the die assembly and the supporting assembly are all installed on the centralized installation plate beam. The centralized mounting plate beam is used for mounting the movable mould assembly, the die assembly and the supporting assembly, and the integrity of the equipment is improved.
The movable mould assembly comprises a first movable mould, a second movable mould, a third movable mould, a fourth movable mould and a fifth movable mould, wherein two ends of the first movable mould, the second movable mould, the third movable mould, the fourth movable mould and the fifth movable mould are respectively connected with telescopic rods of a first driving cylinder group, a second driving cylinder group, a third driving cylinder group, a fourth driving cylinder group and a fifth driving cylinder group, and the first driving cylinder group, the second driving cylinder group, the third driving cylinder group, the fourth driving cylinder group and the fifth driving cylinder group are fixed on the centralized mounting plate beam in a trapezoidal shape from front to back. According to the quantity that the single steel sheet quantity of every shaping leaf spring set up the movable mould, this technical scheme is used for making five board-like leaf springs, and every drive cylinder group includes two cylinders for promote or reduce a movable mould, and the movable mould has the size to distinguish, can be gradually big by left side to right side, bends little steel sheet to big steel sheet to the leaf spring in proper order.
The die assembly comprises a first die head, a second die head, a third die head, a fourth die head and a fifth die head which are matched with each moving die of the moving die assembly, the first die head, the second die head, the third die head, the fourth die head and the fifth die head are all arranged on a die rod, the die rod is connected with a telescopic rod of a hydraulic cylinder, and the hydraulic cylinder can be arranged between the centralized mounting plate beam and the machine body in a vertical sliding mode through a lifting cylinder. The die heads are matched with the moving die, and the purpose of the die heads is to bend a single steel plate.
The supporting component comprises a first supporting plate, a second supporting plate, a third supporting plate, a fourth supporting plate and a fifth supporting plate which are used for supporting the movable moulds of the movable mould component, wherein the first supporting plate, the second supporting plate, the third supporting plate, the fourth supporting plate and the fifth supporting plate are all fixed on a supporting main rod, two ends of the supporting main rod are connected with telescopic rods of main rod lifting cylinders, and the main rod lifting cylinders are fixed at two ends of a concentrated mounting plate beam.
By adopting the technical scheme: the supporting plates correspond to the movable dies one to one, and the purpose is to provide a supporting force for the movable dies when the steel plate is bent, so that the acting force is prevented from acting only on the telescopic rods of the driving cylinder group, and the telescopic rods are prevented from being damaged.
The present invention in a preferred example may be further configured to: the outer side of the centralized mounting plate beam and the inner side of the machine body are both provided with lifting slide rails, and the shell of the hydraulic cylinder is provided with slide grooves matched with the two lifting slide rails.
By adopting the technical scheme: the hydraulic cylinder can be lifted and dropped, so that the space is conveniently vacated, and the steel plate is vertically bent and formed.
The second purpose of the invention is realized by the following technical scheme:
a hot bending forming process for a plate spring comprises the following steps:
s1, placing the steel plate to be bent on the turnable conveying device, heating the steel plate by the heating furnace, wherein the turnable conveying device drives the steel plate to stay in a preheating zone of the furnace body for 10-60S during heating, preheating the steel plate, and then continuously conveying the steel plate into the furnace body for heating;
and S2, transferring the heated steel plate into a bending forming machine through a connecting device to be bent.
By adopting the technical scheme: a plurality of steel plates forming one plate spring can be heated and bent at the same time, and the production efficiency is improved.
The present invention in a preferred example may be further configured to: in step 1, the steel plate to be bent is placed on the steerable conveyor in the order of short to long steel plate of the assembled leaf spring, and the temperature is 850-900 ° after heating in the furnace.
By adopting the technical scheme: the arrangement sequence is convenient for the direct formation of a plate spring in the later period, and time and labor are saved.
In summary, the invention includes at least one of the following beneficial technical effects:
1. this unit can heat and crooked simultaneously to the steel sheet of a leaf spring of constitution, difference, makes these steel sheets have the performance uniformity, and the leaf spring performance of its constitution is also more stable, processes a plurality of steel sheets simultaneously moreover, has improved production efficiency, still energy-concerving and environment-protective.
2. The process utilizes the machine set, is convenient to operate and has high production efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the structure of the heating furnace of the present invention.
Fig. 3 is a schematic view of a steerable delivery device of the present invention.
Fig. 4 is a schematic view of the rotational structure of the present invention.
Fig. 5 is a schematic view of the structure of the chain conveyor belt of the invention.
FIG. 6 is a schematic view of the engagement device of the present invention.
Fig. 7 is a schematic structural view of the bending machine of the present invention.
FIG. 8 is a schematic structural view of a movable die assembly of the present invention.
FIG. 9 is a schematic view of the mounting structure of the movable die assembly of the present invention.
FIG. 10 is a schematic view of the structure of the die assembly of the present invention.
Fig. 11 is a schematic structural view of the support assembly of the present invention.
The labels in the figure are:
100. a first transfer section; 110. a rotating table; 111. a chute; 120. a fixed table; 121. a slide rail; 130. a rotating mechanism; 131. a driving cylinder; 132. a rack; 133. a gear; 134. a mounting seat; 140. a first frame body; 200. a second transfer section; 210. a second frame body; 220. a cross beam; 300. a transfer assembly; 310. a first driven sprocket; 320. a first drive sprocket; 330. a chain conveyor belt; 331. a first chain; 332. a rotating shaft; 333. a high temperature resistant delivery screen; 334. pushing the plate; 400. a furnace body; 410. a first heating section; 411. a preheating zone; 420. a second heating section; 430. an electrical heating assembly; 440. a heat insulation plate; 500. a push-pull cylinder; 600. a joining device; 610. a heat preservation cover body; 620. a transfer slide rail; 630. a transfer block; 640. an electromagnet; 650. a transfer cylinder; 1000. a body; 1100. installing plate beams in a centralized manner; 2000. a conveying device; 2100. a drive sprocket; 2200. a driven sprocket; 2300. a chain; 2400. a conveyor belt; 2500. a steel plate inclined supporting plate group; 2510. a first inclined support plate; 2520. a second inclined support plate; 3000. a bending device; 3100. a movable die assembly; 3101. a first movable mold; 3102. a second movable mold; 3103. a third movable mould; 3104. a fourth movable mold; 3105. a fifth movable mould; 3106. a first driving cylinder group; 3107. a second driving cylinder group; 3108. a third driving cylinder group; 3109. a fourth driving cylinder group; 3110. a fifth driving cylinder group; 3200. a die assembly; 3201. a first die head; 3202. a second die head; 3203. a third die head; 3204. a fourth die head; 3205. a fifth die head; 3206. a mold pressing rod; 3207. a hydraulic cylinder; 3208. lifting the slide rail; 3209. a lift cylinder; 3300. a support assembly; 3301. a first support plate; 3302. a second support plate; 3303. a third support plate; 3304. a fourth support plate; 3305. a fifth support plate; 3306. a support main rod; 3307. a main rod lifting cylinder; 3308. and a reinforcing plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
The first object of the present embodiment is achieved by the following embodiments:
referring to fig. 1 and 2, a leaf spring hot bending forming machine set includes a heating furnace, a bending forming machine and a joining device 600;
in this embodiment, the heating furnace includes a furnace body 400 and a steerable conveyor, the steerable conveyor includes a first conveying section 100 and a second conveying section 200, a rear half section of the first conveying section 100 is disposed at a front side inside the furnace body 400, the second conveying section 200 of the steerable conveyor is disposed in the furnace body 400, a tail end of the second conveying section 200 extends out of the furnace body 400, the furnace body 400 includes a first heating section 410 and a second heating section 420, an electric heating assembly 430 is disposed in each of the first heating section 410 and the second heating section 420, a preheating zone 411 is disposed at a front end of the first heating section 410, and a liftable heat shield 440 is disposed between the first heating section 410 and the second heating section 420, wherein the heat shield 440 is connected to a telescopic rod of a push-pull cylinder 500, and the push-pull cylinder 500 can lift the heat shield 440;
bending and forming machine: the bending device comprises a machine body 1000, wherein a conveying device 2000 is arranged on the machine body 1000, the conveying device 2000 penetrates through the middle lower part of the machine body 1000, a bending device 3000 is arranged on the machine body 1000 on the upper part of the conveying device 2000, the bending device 3000 comprises a movable die assembly 3100 and a pressing die assembly 3200 which are matched with each other, and the bending device further comprises a supporting assembly 3300 for supporting the movable die assembly 3100;
referring to fig. 3, in the present embodiment, a conveying assembly 300 is disposed on each of the first conveying section 100 and the second conveying section 200, a rotating table 110 is disposed at the bottom of the first conveying section 100, a fixed table 120 is disposed at the lower side of the rotating table 110, and a rotating mechanism 130 is further included for rotating the rotating table 110 relative to the fixed table 120.
The first conveying section 100 and the second conveying section 200 are arranged in a split mode, wherein the first conveying section 100 can rotate through the rotating mechanism 130 and can be combined into a whole according to needs, the whole steel plate is conveyed to enter the heating furnace to be heated, and the steel plate can also be partially turned to be used in a split mode, and part of the steel plate is conveyed to enter the furnace body 400 to be heated and curled into a rolling lug, so that the multipurpose of the heating furnace is achieved.
Referring to fig. 4, in the present embodiment, a rotary slide rail 121 is disposed on the fixed platform 120, a sliding slot 111 matched with the rotary slide rail 121 is disposed on the lower side of the rotary platform 110, the rotating mechanism 130 includes a driving cylinder 131 disposed on the fixed platform 120, a telescopic rod of the driving cylinder 131 is connected with a rack 132, and the rack 132 is engaged with a gear 133 fixed on the rotary platform 110; the rotary slide rail 121 is arranged on the fixed platform 120 in a semicircular shape, the rotary platform 110 is matched with the rotary slide rail 121 through the sliding chute 111 to realize the rotation with the fixed platform 120, in order to realize the rotation, the rotating mechanism 130 is configured, a telescopic rod of the cylinder extends out through a driving cylinder 131 fixed on the fixed platform 120 to drive a rack 132 to move towards one direction, the rack 132 is meshed with a gear 133 to drive the gear 133 to rotate, the gear 133 is fixedly connected with the rotary platform 110 to drive the rotary platform 110 to rotate relative to the fixed platform 120, and the combination or the split of the first conveying section 100 and the second conveying section 200 is realized; the first frame body 140 is fixedly connected with the rotating table 110, so that the first conveying section 100 is fixed to the rotating table 110, and the conveying assembly 300 is used for conveying a steel plate to be heated for manufacturing a plate spring and enters the furnace body 400 for heating.
In the embodiment, the conveying assembly 300 includes a plurality of first driven sprockets 310 disposed on the cross beam 220 of the first conveying frame and the second conveying frame, and a first driving sprocket 320 disposed at the outer end of the cross beam 220, the driving sprocket 2100 is driven by a motor, and the chain type conveying belt 330 is engaged with the first driving sprocket 320 and the first driven sprocket 310.
Referring to fig. 5, in this embodiment, the chain conveyor 330 includes two first chains 331 engaged with the first driving sprocket 320 and the first driven sprocket 310, a plurality of rotating shafts 332 are disposed between the two first chains 331, a segmented high temperature resistant conveying net plate 333 is disposed between the rotating shafts 332, and a push plate 334 is further disposed on a single rotating shaft 332.
The chain type conveyor belt 330 with the structure has high temperature resistance, can convey a steel plate to enter the furnace body 400 for heating, and the push plate 334 plays a role in pushing the steel plate so that the steel plate does not slide on the conveyor belt.
Referring to fig. 6, in the present embodiment, the engaging device 600: the setting is between heating furnace and bending forming machine, including the heat preservation cover body 610, is equipped with on the inner wall of the heat preservation cover body 610 and transports slide rail 620, transports and is equipped with on the slide rail 620 and transports piece 630, transports the lower extreme of piece 630 and is equipped with electro-magnet 640, transports one side of piece 630 and connects the telescopic link of transporting cylinder 650.
Each steel sheet of treating the bending is heated to the heating furnace, when the heating begins, preheat the steel sheet through preheating zone 411 earlier, guaranteed that the performance of steel sheet does not receive the direct heating and suffers destruction, the steel sheet after the heating is delivered to bending forming machine through linking device 600 and is carried out bending forming, above-mentioned equipment assembly, can handle a plurality of steel sheets of constituteing a leaf spring simultaneously, production efficiency has been improved, the electro-magnet 640 intermittent type formula circular telegram of linking device 600, behind furnace body 400 terminal circular telegram adsorption steel sheet, transfer cylinder 650 promotes to transport piece 630 and advances to the conveyor 2000 play of bending forming machine, put down the steel sheet.
Referring to fig. 7, in the present embodiment, the bending machine includes a machine body 1000, a conveying device 2000 is disposed on the machine body 1000, the conveying device 2000 penetrates through the middle lower portion of the machine body 1000, a bending device 3000 is mounted on the machine body 1000 on the upper portion of the conveying device 2000, the bending device 3000 includes a movable die assembly 3100 and a press die assembly 3200 which are matched with each other, and a supporting assembly 3300 which supports the movable die assembly 3100 is further included.
The steel plate to be bent is conveyed into the machine body 1000 through the conveying device 2000, at the moment, the movable die assembly 3100 descends, the conveying device 2000 continues to drive the steel plate to move forwards, the steel plate is in the upper initial state of the conveying device 2000, one end of the moving die assembly 3100 entering the machine body 1000 inclines upwards to be vertical at the later stage, the moving die assembly 3100 begins to descend when the moving die assembly 3100 is conveyed to a position right below the moving die assembly 3100, under the blocking action of each movable mold and the continuous conveying action of the conveying device 2000, the steel plate is gradually in a vertical state, while support assembly 3300 is lowered to support movable die assembly 3100, as die assembly 3200 is lowered, the hydraulic cylinder 3207 drives the pressing die to push the steel plate to the movable die, so that the steel plate is gradually bent and formed, the conveyor 2000 is temporarily stopped, and after the bending is completed, the conveyor continues to run, and conveys out the bent steel plate while bringing the next set of steel plates into the machine body 1000.
In this embodiment, the conveying device 2000 at least includes two sets of second driving sprockets 2100 and second driven sprockets 2200, the first driving sprocket 320 is driven by a stepping motor, the second driving sprockets 2100 and the second driven sprockets 2200 are provided with second chains 2300, a conveyor belt 2400 is arranged between the two second chains 2300, and the conveyor belt 2400 is provided with a plurality of sets of inclined steel plate supporting plate sets 2500; each set of inclined support plate sets comprises a first inclined support plate 2510 and a second inclined support plate 2520, and the height of the first inclined support plate 2510 in the machine body 1000 is higher than that of the second inclined support plate 2520.
In this embodiment, a centralized installation plate girder 1100 is provided on the top of the machine body 1000, and the movable mold assembly 3100, the press mold assembly 3200 and the support assembly 3300 are all installed on the centralized installation plate girder 1100. Collectively mounting plate beams 1100 are used to mount moving die assembly 3100, die assembly 3200, and support assembly 3300, improving the integrity of the apparatus.
Referring to fig. 8 and 9, the movable mold assembly 3100 includes a first movable mold 3101, a second movable mold 3102, a third movable mold 3103, a fourth movable mold 3104 and a fifth movable mold 3105, both ends of the first movable mold 3101, the second movable mold 3102, the third movable mold 3103, the fourth movable mold 3104 and the fifth movable mold 3105 are connected to expansion links of a first driving cylinder group 3106, a second driving cylinder group 3107, a third driving cylinder group 3108, a fourth driving cylinder group 3109 and a fifth driving cylinder group 3110, respectively, and the first driving cylinder group 3106, the second driving cylinder group 3107, the third driving cylinder group 3108, the fourth driving cylinder group 3109 and the fifth driving cylinder group 3110 are fixed to a collective mounting plate 1100 in a trapezoidal shape from front to rear. According to the quantity that the single steel sheet quantity of every shaping leaf spring set up the movable mould, this technical scheme is used for making five board-like leaf springs, and every drives actuating cylinder 131 group and includes two cylinders for promote or reduce a movable mould, the movable mould has the size to distinguish, can be gradually big by left side to right side, bends little steel sheet to big steel sheet of leaf spring in proper order.
Referring to fig. 10, the die assembly 3200 includes a first die head 3201, a second die head 3202, a third die head 3203, a fourth die head 3204 and a fifth die head 3205 which are engaged with respective moving dies of the moving die assembly 3100, the first die head 3201, the second die head 3202, the third die head 3203, the fourth die head 3204 and the fifth die head 3205 are all mounted on a die rod 3206, the die rod 3206 is connected with a telescopic rod of a hydraulic cylinder 3207, and the hydraulic cylinder 3207 is mounted between the collective mounting plate beam 1100 and the machine body 1000 slidably up and down by a lifting cylinder 3209. The die heads are matched with the moving die, and the purpose of the die heads is to bend a single steel plate.
Referring to fig. 11, support assembly 3300 includes first support plate 3301, second support plate 3302, third support plate 3303, fourth support plate 3304 and fifth support plate 3305 that support each movable die correspondence of movable die assembly 3100, and first support plate 3301, second support plate 3302, third support plate 3303, fourth support plate 3304 and fifth support plate 3305 are all fixed on support mast 3306, and the telescopic link of mast lift cylinder 3307 is connected to the both ends of support mast 3306, and mast lift cylinder 3307 is fixed at the both ends of concentrated installation plate beam 1100.
Above-mentioned each backup pad and movable mould one-to-one, aim at, when crooked to the steel sheet, provide a holding power to the movable mould, prevent that the effort from only acting on the telescopic link that drives actuating cylinder 131 group, cause the harm to the telescopic link.
In this embodiment, the outer side of the centralized mounting plate beam 1100 and the inner side of the machine body 1000 are both provided with lifting slide rails 3208, and the casing of the hydraulic cylinder 3207 is provided with sliding grooves 111 which are matched with the two lifting slide rails 3208. The hydraulic cylinder 3207 can be lifted and lowered to conveniently vacate space and vertically bend and form the steel plate.
The second implementation object of the present embodiment is achieved by the implementation manner:
a hot bending forming process for a plate spring comprises the following steps:
s1, placing the steel plate to be bent on the turnable conveying device, heating the steel plate by the heating furnace, wherein the turnable conveying device drives the steel plate to stay in the preheating zone 411 of the furnace body 400 for 10-60S during heating, preheating the steel plate, and then continuously conveying the steel plate into the furnace body 400 for heating;
and S2, transferring the heated steel plate to a bending forming machine through the connecting device 600 to be bent.
By adopting the technical scheme: a plurality of steel plates forming one plate spring can be heated and bent at the same time, and the production efficiency is improved.
In the embodiment, in step 1, the steel plates to be bent are placed on the steerable conveying device in the sequence from short to long according to the steel plates for assembling the plate spring, the temperature is 850-900 degrees after the steel plates are heated in the furnace body 400, the arrangement sequence is convenient for directly forming the plate spring in the later stage, and time and labor are saved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A plate spring hot bending forming unit is characterized by comprising a heating furnace, a bending forming machine and a connecting device (600);
the heating furnace comprises a furnace body (400) and a turnable conveying device, wherein the turnable conveying device comprises a first conveying section (100) and a second conveying section (200), the rear half section of the first conveying section (100) is arranged on the front side in the furnace body (400), the second conveying section (200) of the turnable conveying device is arranged in the furnace body (400), the tail end of the second conveying section (200) extends out of the furnace body (400), the furnace body (400) comprises a first heating section (410) and a second heating section (420), electric heating assemblies (430) are arranged in the first heating section (410) and the second heating section (420), a preheating area (411) is arranged at the front end of the first heating section (410), and a lifting heat insulation plate (440) is arranged between the first heating section (410) and the second heating section (420);
the bending forming machine comprises: the bending device comprises a machine body (1000), wherein a conveying device (2000) is arranged on the machine body (1000), the conveying device (2000) penetrates through the middle lower part of the machine body (1000), a bending device (3000) is installed on the machine body (1000) on the upper part of the conveying device (2000), the bending device (3000) comprises a movable die assembly (3100) and a pressing die assembly (3200) which are matched with each other, and the bending device further comprises a supporting assembly (3300) for supporting the movable die assembly (3100);
the engagement device (600): the setting is between heating furnace and bending forming machine, including the heat preservation cover body (610), be equipped with on the inner wall of the heat preservation cover body (610) and transport slide rail (620), be equipped with on transporting slide rail (620) and transport piece (630), the lower extreme of transporting piece (630) be equipped with electro-magnet (640), the telescopic link of transporting cylinder (650) is connected to one side of transporting piece (630).
2. The plate spring hot bending forming unit according to claim 1, wherein the first conveying section (100) and the second conveying section (200) are respectively provided with a conveying assembly (300), the bottom of the first conveying section (100) is provided with a rotating table (110), the lower side of the rotating table (110) is provided with a fixed table (120), and the plate spring hot bending forming unit further comprises a rotating mechanism (130) capable of enabling the rotating table (110) to rotate relative to the fixed table (120).
3. The plate spring hot bending forming unit according to claim 2, wherein a rotary slide rail (121) is arranged on the fixed platform (120), a sliding chute (111) matched with the rotary slide rail (121) is arranged on the lower side of the rotary platform (110), the rotating mechanism (130) comprises a driving air cylinder (131) arranged on the fixed platform (120), a telescopic rod of the driving air cylinder (131) is connected with a rack (132), and the rack (132) is meshed with a gear (133) fixed on the rotary platform (110);
the conveying assembly (300) comprises a plurality of first driven sprockets (310) arranged on cross beams (220) of the first conveying frame and the second conveying frame and a first driving sprocket (320) arranged at the outer end of the cross beam (220), the driving sprocket (2100) is driven by a motor, and chain type conveying belts (330) are meshed on the first driving sprocket (320) and the first driven sprocket (310).
4. The plate spring hot-bending forming unit according to claim 3, wherein the chain conveyor belt (330) comprises two first chains (331) engaged with the first driving sprocket (320) and the first driven sprocket (310), a plurality of rotating shafts (332) are arranged between the two first chains (331), a segmented high-temperature resistant conveying screen plate (333) is arranged between the rotating shafts (332), and a push plate (334) is further arranged on a single rotating shaft (332).
5. The plate spring hot bending forming unit according to claim 1, wherein the bending forming machine comprises a machine body (1000), a conveying device (2000) is arranged on the machine body (1000), the conveying device (2000) penetrates through the middle lower part of the machine body (1000), a bending device (3000) is mounted on the machine body (1000) at the upper part of the conveying device (2000), the bending device (3000) comprises a movable die assembly (3100) and a pressing die assembly (3200) which are matched with each other, and the bending forming machine further comprises a supporting assembly (3300) for supporting the movable die assembly (3100).
6. The plate spring hot bending forming unit according to claim 1, wherein the conveying device (2000) comprises at least two groups of second driving chain wheels (2100) and second driven chain wheels (2200), the first driving chain wheel (320) is driven by a stepping motor, second chains (2300) are arranged on the second driving chain wheels (2100) and the second driven chain wheels (2200), a conveyor belt (2400) is arranged between the two second chains (2300), and a plurality of groups of steel plate inclined supporting plate groups (2500) are arranged on the conveyor belt (2400); each group of the plate spring inclined support plate group comprises a first inclined support plate (2510) and a second inclined support plate (2520), and the height of the first inclined support plate (2510) in the machine body (1000) is higher than that of the second inclined support plate (2520).
7. The plate spring hot bending forming unit according to claim 5, wherein a centralized installation plate beam (1100) is arranged at the top of the machine body (1000), and the movable die assembly (3100), the die assembly (3200) and the support assembly (3300) are all installed on the centralized installation plate beam (1100);
the movable mold assembly (3100) comprises a first movable mold (3101), a second movable mold (3102), a third movable mold (3103), a fourth movable mold (3104) and a fifth movable mold (3105), wherein two ends of the first movable mold (3101), the second movable mold (3102), the third movable mold (3103), the fourth movable mold (3104) and the fifth movable mold (3105) are respectively connected with telescopic rods of a first driving cylinder group (3106), a second driving cylinder group (3107), a third driving cylinder group (3108), a fourth driving cylinder group (3109) and a fifth driving cylinder group (3110), and the first driving cylinder group (3106), the second driving cylinder group (3107), the third driving cylinder group (3108), the fourth driving cylinder group (3109) and the fifth driving cylinder group (3110) are fixed on the centralized mounting plate beam (1100) in a trapezoidal shape from front to back;
the die pressing assembly (3200) comprises a first die pressing head (3201), a second die pressing head (3202), a third die pressing head (3203), a fourth die pressing head (3204) and a fifth die pressing head (3205) which are matched with all moving dies of the moving die assembly (3100), the first die pressing head (3201), the second die pressing head (3202), the third die pressing head (3203), the fourth die pressing head (3204) and the fifth die pressing head (3205) are all arranged on a die pressing rod (3206), the die pressing rod (3206) is connected with a telescopic rod of a hydraulic cylinder (3207), and the hydraulic cylinder (3207) can be arranged between the centralized mounting plate beam (1100) and the machine body (1000) in a vertically sliding mode through a lifting cylinder (3209);
support assembly (3300) include to each movable mould correspondence of movable mould subassembly (3100) carry out the first backup pad (3301), second backup pad (3302), third backup pad (3303), fourth backup pad (3304) and fifth backup pad (3305) that support, first backup pad (3301), second backup pad (3302), third backup pad (3303), fourth backup pad (3304) and fifth backup pad (3305) all fix on supporting total pole (3306), the telescopic link of total pole lift cylinder (3307) is connected at the both ends of supporting total pole (3306), total pole lift cylinder (3307) are fixed at the both ends of concentrating installation plate beam (1100).
8. The plate spring hot bending forming unit according to claim 7, wherein lifting slide rails (3208) are arranged on the outer side of the centralized mounting plate beam (1100) and the inner side of the machine body (1000), and a shell of the hydraulic cylinder (3207) is provided with a sliding groove (111) matched with the two lifting slide rails (3208).
9. A hot bending forming process for a plate spring is characterized by comprising the following steps:
s1, placing the steel plate to be bent on the turnable conveying device, heating the steel plate by the heating furnace, wherein the turnable conveying device drives the steel plate to stay in a preheating area (411) of the furnace body (400) for 10-60S during heating, preheating the steel plate, and then continuously conveying the steel plate into the furnace body (400) for heating;
s2, transferring the heated steel plate to a bending forming machine through a connecting device (600) for bending.
10. The process for hot-bending leaf springs according to claim 1, wherein in step 1, the steel plates to be bent are placed on the steerable conveyor in the order of short to long, and the temperature after heating in the furnace (400) is 850 ° to 900 °.
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| CN202010569299.8A CN111745002B (en) | 2020-06-20 | 2020-06-20 | Plate spring hot bending forming unit and hot bending forming process |
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| CN202010569299.8A CN111745002B (en) | 2020-06-20 | 2020-06-20 | Plate spring hot bending forming unit and hot bending forming process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255046A (en) * | 2022-08-04 | 2022-11-01 | 山东双力板簧有限公司 | Leaf spring subassembly contour machining equipment |
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| JPH0957349A (en) * | 1995-08-25 | 1997-03-04 | Ricoh Co Ltd | High precision adjusting device for angle of leaf spring or the like |
| CN107287396A (en) * | 2017-08-25 | 2017-10-24 | 山东雷帕得汽车技术股份有限公司 | A kind of automatic Quenching Production Line |
| CN109694950A (en) * | 2019-02-27 | 2019-04-30 | 淄博高新区百力工贸有限公司 | The automatic quenching line of leaf spring |
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