WO2017167147A1

WO2017167147A1 - Heating equipment for use in hot forming process, and hot forming production line

Info

Publication number: WO2017167147A1
Application number: PCT/CN2017/078284
Authority: WO
Inventors: 安健; 王波; 张凤操
Original assignee: 苏州普热斯勒先进成型技术有限公司
Priority date: 2016-03-28
Filing date: 2017-03-27
Publication date: 2017-10-05

Abstract

A heating equipment (02) for use in a hot forming process comprises material feeding and lifting equipment (10), a multi-layer heating furnace (20) adjacent to the material feeding and lifting equipment, and material discharging and lifting equipment (30) adjacent to the multi-layer heating furnace. A blank (01) sequentially passes through the material feeding and lifting equipment, multi-layer heating furnace, and material discharging and lifting equipment. Also provided is a hot forming production line, comprising, in a blank transferring order, the material feeding and lifting equipment, the multi-layer heating furnace, the material discharging and lifting equipment, a blank transfer equipment (50), and a press machine (60). The embodiments employ the material feeding and lifting equipment and the material discharging and lifting equipment to feed or discharge blanks to and from each roller layer (202) of the multi-layer heating furnace, and replace a conventional continuous serial-feeding blank heating mode with a continuous parallel-feeding blank heating mode, increasing heating efficiency. Induction heating is provided in the material feeding and lifting equipment, enabling quick heating during transferring blanks, increasing production efficiency.

Description

Hot stamping forming heating device and hot stamping production line

Technical field

The invention belongs to the field of hot stamping forming equipment, and in particular relates to a hot stamping forming heating device and a hot stamping production line.

Background technique

The hot stamping forming production line comprises a feeding device, a heating device, a forming device, a discharging device and a transfer device for transferring sheets between the devices, and the feeding device can be a destacking machine or a fixed feeding table, etc. The device may be a chain conveyor or a simple carrier or the like that interfaces with a subsequent process, and the transfer device is mainly a robot or a transfer device designed according to a specific need. The most critical part of the hot stamping forming line is the heating device and the forming device.

According to the heating device, it is divided into continuous roller bottom heating furnace production line and multi-layer box heating furnace production line. Wherein, the continuous roller bottom heating furnace production line is sent by the robot to the rolling inlet end of the heating furnace, and the heated blank is continuously fed by the one-way rolling roller in the heating furnace until it is sent to the outlet end of the heating furnace. It is then picked up by the robot and fed into the press. Since the billet needs to be continuously fed into the press while heating and keeping warm, the heating and holding time takes at least 300 seconds, which requires the billet to be transferred from the inlet end to the outlet end in the furnace chamber for 300 seconds, and it is also necessary to ensure the furnace. It can support the production volume of the press, that is, to ensure a certain production cycle. Therefore, the furnace of the production line has a long furnace, usually tens of meters and a large area.

The multi-layer box heating furnace production line is extended into the furnaces of each layer of the multi-layer box heating furnace by the same robot's end picker, and the heated billet is placed from the same furnace door of a certain layer, and the heat is kept warm. After picking up and taking out the heated billet, the robot in this way takes a long time, resulting in low production efficiency, and the robot pick-up/manipulator takes the billet into and out of the furnace and takes a much longer time than the billet is sent by the roller, further leading to production efficiency. decline. Moreover, the end picker of the manipulator must be able to withstand the high temperature in the furnace cavity, so it is necessary to use repeated temperature-resistant materials, and the cost is high. For example, a multi-layer box type heating furnace is disclosed in Chinese patent CN203373389U.

The inventor disclosed in Chinese patent CN104690172A a hot stamping forming production line, through a multi-layer heating furnace, and a feed lifting device and a discharging lifting device, a multi-layer heating furnace and a feeding lifting device, and a matching feeding device thereof The billet is transferred between the discharge lifting device through the roller, which solves the problem of the continuous roller bottom heating furnace and the multi-layer box heating furnace production line. However, in the multi-layer heating furnace is a ceramic hearth roll, the ceramic hearth roll has stable physical and chemical properties under high temperature conditions, but there is a problem of easy breakage, and the price of the ceramic hearth roll is high, replacement The cost is large. In particular, when multiple layers are provided, once the upper bottom roll is broken, it will directly damage the underlying bottom roll, which greatly increases the maintenance cost and time. Therefore, the promotion and use of the multi-layer heating furnace is limited.

Summary of the invention

The invention provides a hot stamping forming heating device and a hot stamping production line, which are used to solve the problems of large current hot stamping production line and high operation and maintenance cost.

In order to solve the above technical problem, the technical solution of the present invention is: the hot stamping forming heating device, comprising a feed lifting device, a multi-layer heating furnace adjacent to the feed lifting device, and adjacent to the multi-layer heating furnace The discharging lifting device, the blank passes through the feeding lifting device, the multi-layer heating furnace and the discharging lifting device in sequence;

The feeding lifting device and the discharging lifting device each comprise a conveying platform and a driving device for driving the conveying platform to lift, the conveying platform is provided with a plurality of driving rollers arranged in parallel;

The multi-layer heating furnace includes an outer casing with an insulating layer, a plurality of horizontal rolling layers and heating means disposed in the outer casing, the rolling layer being formed by a plurality of furnace rolls arranged in parallel, the furnace roll comprising ceramic a housing and a metal core disposed within the ceramic housing;

The feed lifting device and the discharge lifting device cooperate to feed or discharge the rolling layers of each layer.

Since the metal core is provided inside the furnace roll, there is no damage to the lower layer rolling layer due to the damage of the upper layer rolling roll.

Preferably, the drive roller is a bi-directional roller and the furnace roller is a bi-directional roller.

Preferably, one end of the furnace roller is connected to the transmission wheel, and is disposed in the outer casing through bearings at both ends.

Preferably, the material of the driving roller is made of metal. Metal-made rolls are less expensive and less prone to breakage than ceramic rolls.

Preferably, the multilayer heating furnace heats the billet by radiation, preferably by wire heating or nozzle heating.

The radiant heating mainly refers to relying on gas combustion heating or resistance wire heating, and is a common heating method of a roller bottom or a step type heating furnace.

Preferably, the heating device includes a plurality of heating layers in a horizontal direction, the heating layer is disposed to intersect the rolling layer, and the heating layer is formed by a plurality of resistance wire heating rods arranged in parallel.

Compared with the heating of the side wall of the conventional multi-layer heating furnace, the layered heating not only heats the regions more uniformly but also improves the heating efficiency.

Preferably, the central axis of the furnace roll is not coplanar with the central axis of the heating rod in the vertical direction.

Preferably, the feeding lifting device and the discharging lifting device are all guided by guide plates, and a height stop position is disposed at a position corresponding to each rolling layer.

Preferably, the conveyor platform of the discharge lifting device is further provided with a heated blank positioning device.

Preferably, a heating device and a heat reflecting layer are disposed under the conveying platform of the discharge lifting device.

Preferably, the multi-layer heating furnace includes a heating zone and a heat retention zone in sequence along the billet feeding direction.

Preferably, the temperature of the heating zone is 700-950 ° C, preferably 800-900 ° C, and the temperature of the holding zone is 900-950 ° C.

The heating zone and the heat preservation zone are heated in sections, which can be moderately blocked by the heat insulating material to improve the heating efficiency.

Preferably, the feed lifting device further comprises an induction heating device that inductively heats the blank on the transfer platform.

Preferably, the induction heating device comprises a flat-plate electromagnetic induction heater disposed on upper and lower sides of a plane of movement of the driving roller.

Preferably, the heating temperature of the feed lifting device is 700-800 ° C, preferably 740-760 ° C, and the furnace temperature of the multi-layer heating furnace is 850-950 ° C.

The induction heating rate is fast, the billet is heated from room temperature to the magnetic transition point temperature (about 750 ° C), no more than 10 s, but the heating rate after induction heating is sharply reduced, and then it is introduced into the multi-layer heating furnace to continue heating until the billet is completed. Austenitizing.

The invention firstly picks and places the blanks on the rolling platforms of the various layers in the multi-layer heating furnace by the feeding lifting device and the discharging lifting device, thereby changing the heating mode of the original series continuous billets into the parallel continuous billet heating mode, not only It can be easily matched with the faster production cycle of the press, and the length of the furnace is greatly shortened. Further, the sub-zone heating mode provides better heating efficiency and reduces heat loss, especially in the feed lifting device, and ingeniously uses the billet conveying process to rapidly heat up, further shortening the heating furnace. The heating time in the series accelerates the production cycle and improves the production efficiency.

The present invention also provides a hot stamping production line, which in turn comprises at least one set of feed lifting devices, at least one set of the above-mentioned multi-layer heating furnaces, at least one set of discharge lifting devices, a blank transfer device and a press according to the blank conveying process. The blank transfer device is used to transfer the heated billet to a press for hot press forming, and also includes an integrated control system that controls the entire production cycle of the hot stamping line.

Preferably, the truss, the discharge lifting device and the blank transfer device are further disposed on the truss.

Preferably, the truss comprises a first upright, a second upright, a cross member disposed at the top of the first and second uprights, a vertical beam disposed on the beam, and an overhanging beam disposed below the vertical beam, The discharge lifting device is disposed between the first and second columns and is raised and lowered along the first and second columns, and the blank transfer device is disposed at the bottom of the overhanging beam, and the bottom of the vertical beam is disposed a first slideway for laterally moving the overhanging beam, the bottom of the overhanging beam is provided with a second slideway for lateral movement of the blank transfer device, and the first and second uprights are provided with the overhanging beam and The window through which the blank transfer device passes.

Preferably, the hot stamping production line comprises, in sequence, a feeding robot, a feeding lifting device, the multi-layer heating furnace, a discharging lifting device, a feeding robot, a pressing machine and a discharging robot, and an integrated control according to the blank conveying process. system. The integrated control system controls the feeding robot to transfer the blank to the feeding lifting device, and further conveys the blank to a designated rolling layer in the multi-layer heating furnace for heating, and the discharging lifting device shifts the blank out of the multilayer after austenitizing the blank In the heating furnace, the feeding robot transfers the blank on the discharging lifting device to the pressing machine for hot press forming, and after the completion, the discharging robot removes the finished product. The discharge lifting device and the feeding robot can be changed into an elevator table and a robot, and are integrated by the truss, which can further reduce the occupied space and shorten the transit time of the heated billet.

Preferably, the hot stamping production line comprises the press, a truss disposed on a central axis of one side of the press, a discharge lifting device and a blank transfer device disposed on the truss, and another set on the press a side discharge robot and a conveyor belt, a first multi-layer heating furnace and a second multi-layer heating furnace disposed opposite to each side of the billet transfer device, and a first feed corresponding to the first multi-layer heating furnace a lifting device, a second feeding lifting device corresponding to the second multilayer heating furnace, and an integrated control system.

The above technical solution separately carries out billet heating for two sets of multi-layer heating furnaces through two sets of feeding lifting devices, and then transfers the materials from two sets of multi-layer heating furnaces to the press through a discharge lifting device and a blank transfer device. Processing can ensure the production cycle of 3 pieces per minute and the production efficiency is high.

Preferably, the hot stamping production line comprises a first multi-layer heating furnace, a first feed lifting device connected to the first multi-layer heating furnace, a first discharge lifting device, a second multi-layer heating furnace, and a second feed lifting device and a second discharge lifting device, a blank transfer device, a press and an integrated control system connected to the second multi-layer heating furnace. An integrated control system controls an in-and-out time and sequence of each of the rolling layers in the first multi-layer heating furnace and the second multi-layer heating furnace, the billet transferring device blanking the first discharging lifting device and the second discharging lifting device Transfer to the press Hot press forming is performed.

The hot stamping heating device can also be used for hot stamping of aluminum alloy sheets. The invention also provides an aluminum alloy sheet hot stamping production line, which in turn comprises a sprayer, the feed lifting device, the multi-layer heating furnace, the discharging lifting device, the blank transfer device, and the pressing according to the blank conveying process. Machine, aging furnace and integrated control system.

Preferably, the multi-layer heating furnace in the hot stamping forming heating device is heated by a nozzle.

Compared with the prior art, the present invention has the following advantages:

1) Due to the arrangement of the feeding lifting device and the discharging lifting device, the furnace of the heating furnace of the invention does not need to be long, and the production line area is greatly reduced;

2) According to the invention, since the furnace of the heating furnace is short, the shutdown and maintenance are convenient, and when the failure occurs, the downtime is short and the maintenance cost is low;

3) According to the invention, since the furnace of the heating furnace is short, the moving distance of the blank is also short, and the positioning of the blank at the outlet end is easy to control;

4) Since the billet does not need to be continuously fed in one direction in the furnace of the heating furnace, the present invention can perform different heating and processing on billets of different thicknesses and sizes in the case where the production cycle is constant and the heating and holding temperature is constant. Holding time control;

5) The invention does not need a robot to extend into the furnace cavity to grab the blank, and the material in the cavity does not collide with the robot, so it is not necessary to use expensive and vulnerable metal materials, thereby saving production cost; at the same time, the robot does not need to be able to withstand the furnace cavity. The high temperature material inside further saves production costs;

6) The blank is automatically fed and sent horizontally by the feeding lifting device and the discharging lifting device. The opening of the furnace door used in the invention is small, the heat loss is smaller, and the temperature control is more accurate;

The billet is fed and sent by the driving roller. The time required is much shorter than that of the robot. The production efficiency is higher, the production tempo is much higher than the existing production line, and the short opening time also makes the invention more energy-saving and temperature control. More accurate.

DRAWINGS

1 is a schematic structural view of a hot stamping forming heating device described in Embodiment 1;

2 is a schematic structural view of the multi-layer heating furnace described in Embodiment 1;

Figure 3 is a schematic structural view of the hot stamping forming heating device of Embodiment 2;

Figure 4 is a schematic structural view of the feed lifting device of Embodiment 3;

Figure 5 is a schematic structural view of the hot stamping forming production line described in Embodiment 4;

Figure 6 is a front elevational view of the elevator platform, truss and robot of Embodiments 4 and 5;

Figure 7 is a plan view of the elevator platform, the truss and the robot in the embodiments 4 and 5;

Figure 8 is a cross-sectional view of the elevator table, truss and manipulators of Embodiments 4 and 5;

9 is a schematic structural view of the trussless hot stamping forming production line in Embodiment 4;

Figure 10 is a schematic structural view of the double-twisting machine feeding hot stamping forming production line in the fourth embodiment;

Figure 11 is a schematic view showing the structure of the hot stamping forming line in the fifth embodiment;

Figure 12 is a schematic structural view of the hot stamping forming line of the embodiment 6;

Figure 13 is a schematic structural view of the hot stamping forming line in the seventh embodiment;

Figure 14 is a schematic view showing the structure of the multilayer heating furnace in the seventh embodiment.

The figure shows:

01-blank, 02-hot stamping forming heating device, 10-feed lifting device, 11-first feeding lifting device, 12-second feeding lifting device, 101-transport platform, 102-drive roller, 103-electric Magnetic induction heater, 20-multilayer heating furnace, 21-first multilayer heating furnace, 22-second multilayer heating furnace, 201-insulation layer, 202-rolling layer, 2021-furnace roll, 203-heating layer, 2031 - heating rod, 2032 - trachea, 2033 - nozzle, 204 - transmission wheel, 205 - bearing, 206 - heating zone, 207 - holding zone, 30 - discharge lifting device, 301 - first servo drive, 302 - first Cylinder, 303-block, 304-bidirectional drive roller, 305-second heating device, 306-second heat reflective layer, 307-block finger, 308-second cylinder, 309-second servo drive, 41 - First feeding system, 42 - Second feeding system, 401 - Feeding robot, 402 - Feeding station, 403 - Demolition trolley, 404 - Sprayer loading robot, 405 - Sprayer, 50 - Blank transfer device , 501 - robot, 502 - first heating device, 503 - first heat reflecting layer, 60 - press, 701 - unloading robot, 702 - product conveyor, 703 - chain conveyor, 704 - aging furnace Feeding robot, aging furnace 705, the truss 80, a first column 801, second column 802, 803- beams, vertical beams 804, 805- cantilevered beam.

detailed description

The hot stamping forming heating device of the present invention comprises a feeding lifting device, a multi-layer heating furnace adjacent to the feeding lifting device, and a discharging lifting device adjacent to the multi-layer heating furnace, wherein the billet is sequentially moved through the feeding Device, more Layer heating furnace and discharge lifting device;

The multi-layer heating furnace includes an outer casing with an insulating layer, a plurality of horizontal rolling layers and heating means disposed in the outer casing.

The feeding lifting device and the discharging lifting device cooperate to feed or discharge the rolling layers of each layer;

Applying the hot stamping forming heating device to the actual production to form a hot stamping production line, comprising, according to the billet conveying process, at least one set of feeding lifting device, at least one set of the above multi-layer heating furnace, at least one set of discharging lifting device, A blank transfer apparatus and a press for transferring the heated billet into a press for hot press forming, and an integrated control system for controlling the entire production cycle of the hot stamping line.

The hot stamping production line needs to provide a feeding device for carrying raw materials, such as one or more demolition trolleys or a feeding platform, a feeding device and the feeding lifting device, according to the requirements of the actual production environment and the process, before the feeding lifting device A robot or other loading mechanism that needs to be fed between. A discharge device is required behind the press, which can be a chain conveyor or a simple carrier that is connected to the subsequent process.

According to the production cycle of the multi-layer heating furnace and the press, one or more multi-layer heating furnaces may be fed for one press, or a multi-layer heating furnace may be used for simultaneous feeding of multiple presses, and multi-layer heating. The positional relationship between the furnace and the press can be flexibly designed according to the working conditions. The intermediate transmission device can be one or more robots or other transmission devices.

In addition, for safety, a guard rail may be disposed on the periphery of the hot stamping production line, and the guard rail may be provided with a door for the staff to enter and exit, an inlet for feeding, and an outlet for feeding the chain conveyor, and the outer periphery of the guard rail may also be Set up the console, etc.

The present invention will be described in conjunction with the embodiments in order to facilitate the understanding of the invention. It is understood that the invention is not intended to limit the scope of the invention.

Example 1

As shown in FIG. 1, the feed lifting device 10, the multi-layer heating furnace 20 adjacent to the feed lifting device 10, and the discharge lifting device 30 adjacent to the multi-layer heating furnace 20, the blank 01 are sequentially passed through. Material lifting device 10, multi-layer heating furnace 20 and discharge lifting device 30;

The feed lifting device 10 and the discharge lifting device 30 each include a conveying platform 101 and a driving device (not shown) for driving the conveying platform, and the conveying platform 101 is provided with a plurality of driving rollers 102 arranged in parallel. The driving roller 102 is a bidirectional roller or a one-way roller, and the material may be a ceramic roller or a metal roller. The driving device uses a cylinder, and may also be a servo motor or a hydraulic cylinder. Guide plates are arranged around the conveying platform 101 (in the figure) Guided to ensure that the transfer platform 101 is raised horizontally.

The conveying platform 101 of the discharge lifting device 30 is provided with positioning means (not shown) to ensure that the heated blank 01 is taken away at the fixed position of the conveying platform 101, and the heated blank 01 of the present invention is on the conveying platform. The moving distance of 101 is short, and the positioning of the blank 01 is easy to control.

As shown in FIG. 2, the multi-layer heating furnace 20 includes a casing (not shown) in which an insulation layer 201 is disposed, two horizontal rolling layers 202 and three horizontal heating layers are disposed in the casing. 203, the heating layer 203 is disposed across the rolling layer 202.

With continued reference to FIG. 1, the rolling layer 202 is formed by a plurality of furnace rolls 2021 arranged in parallel. The heating layer 203 is formed by a plurality of resistance wire heating rods 203 1 arranged in parallel. The central axis of the furnace roll 2021 is not coplanar with the central axis of the heating rod 2031 in the vertical direction. The feed lifting device 10 and the discharge lifting device 30 cooperate to feed or discharge the rolling layers 202. The furnace roller 2021 includes a ceramic outer casing and a metal core disposed in the ceramic outer casing; the furnace roller 2021 is a bidirectional roller, and the blank 01 can be rolled up or fixedly heated on the furnace roller.

Further, the inlet and outlet ends of each layer of the rolling layer 202 have independent inlet and outlet furnace doors (not shown), so that the multi-layer heating furnace 20 has a small opening of the furnace door when entering and exiting the blank 01, and the heat loss is smaller and more. The temperature control within the layer heating furnace 20 is more accurate.

With continued reference to FIG. 2, one end of the furnace roll 2021 is coupled to the drive wheel 204 and is disposed within the outer casing by bearings 205 at both ends.

The transport platform 101 is further provided with a stop position (not shown) at a position corresponding to each layer of the rolling layer 202, ensuring that the transport platform 101 is level with the rolling layer 202 when feeding, ensuring accurate feeding.

The working process is as follows:

Specifically, after the driving device of the feeding lifting device 10 drives the conveying platform 101 to move to a height corresponding to a certain layer of the rolling layer 202, the inlet door of the layer of the rolling layer 202 is opened, and the conveying platform 101 horizontally conveys the blank 01 thereon. On the rolling layer 202, the furnace door is closed; due to the arrangement of the feeding lifting device 10 and the discharging lifting device, the rolling layer 202 of the present invention does not need to be continuously fed in one direction, that is, the length of the furnace of the multi-layer heating furnace 20 is relatively high. There are a lot of techniques. After the blank 01 is heated and maintained in the multi-layer heating furnace 20, the outlet door of the rolling layer 202 is opened. At this time, the conveying platform 101 of the discharging platform 30 has been raised to the level of the rolling layer 202 to be discharged. The rolling layer 202 drives the blank 01 to the outlet end, while the transfer platform 101 operates to remove the blank 01, from which the blank is heated and then transferred to the press for forming.

Example 2

The difference from Embodiment 1 is that, as shown in FIG. 3, the multi-layer heating furnace includes a heating zone 206 and a heat retention zone 207 in this order along the direction in and out of the blank 01.

The temperature of the heating zone 204 is 700-950 ° C, preferably 800-900 ° C, and the temperature of the holding zone 205 is 900-950 ° C.

Example 3

The difference from Embodiment 1 is that, as shown in FIG. 4, the feed lifting device 10 further includes an induction heating device that inductively heats the blank 01 on the transfer platform 101.

The induction heating device includes a flat-plate electromagnetic induction heater 103 that is disposed on upper and lower sides of a moving plane of the driving roller 102.

The heating temperature of the feed lifting device 10 is 700-800 ° C, preferably 740-760 ° C, and the furnace temperature of the multi-layer heating furnace 20 is 850-950 ° C.

Example 4

As shown in FIG. 5, the hot stamping production line includes a feeding robot 401, a feeding lifting device 10, the multi-layer heating furnace 20, a truss 80, and a discharging lifting device disposed on the truss 80 in sequence according to the blank conveying process. (Elevator table) 30 and blank transfer device 50, press 60 and discharge robot 701. The feed lifting device 10 and the multilayer heating furnace 20 are the multilayer heating furnaces of the second embodiment.

Referring to FIG. 6 to FIG. 7 , the truss 80 includes: a first column 801, a second column 802, and a beam 803 disposed at the tops 801 and 802 of the first and second columns, which can be along the beam 803. The vertical movement can simultaneously move up and down (ie, in the vertical direction) the vertical beam 804 and the overhanging beam 805 disposed under the vertical beam 804, and the discharge lifting device 30 is disposed on the first and second columns 801, Between the 802 and the first and

second columns

801, 802, the robot 501 of the blank transfer device 50 is disposed at the bottom of the overhanging beam 805, and the bottom of the vertical beam 804 is provided with an overhanging beam 805. a first slide (not shown) that is laterally moved, a second slide (not shown) for lateral movement of the robot 501 is disposed at the bottom of the overhanging beam 805, and the first and second columns 801, A window for the overhanging beam 805 and the robot 501 to pass through is provided on the 802.

Referring to Fig. 8, the robot 501 is provided with a first heating device 502 and a first heat reflecting layer 503 for heat-treating the blank on the robot 501 to avoid cooling of the blank during the feeding process.

Preferably, the discharge lifting device 30 comprises a conveying platform 101 and a blank bidirectional positioning device, the blank The material bidirectional positioning device is mounted on a transfer platform 101 between the first and

second columns

801, 802 which positions the blank of the multilayer heating furnace 20.

Referring to FIG. 8, the blank bidirectional positioning device comprises: a plurality of sets of first servo driving devices 301, a first cylinder 302, a baffle plate 303, a second servo driving device 309, a stopper finger 307 and a second cylinder 308. The first servo driving device 301 drives the baffle plate 303 to position the billet in any direction from the blank moving direction, and the first cylinder 302 drives the baffle plate 303 to move up and down. The purpose of the up and down movement is to block the blank at the desired time while avoiding the blank during the conveyance of the blank. The plurality of sets of first servo driving devices 301 control the plurality of sets of the baffle plates 303 to realize the positioning direction of the plurality of blanks arranged in multiple stages in the conveying direction. The second servo drive 309 drives the retaining finger 307 to laterally position the blank, and the second cylinder 308 drives the retaining finger 307 to move up and down. A plurality of sets of second servo drives 309 control the plurality of sets of stop fingers 307 to effect multi-point positioning of the blanks in the lateral direction so that the blanks can reach the set position on the drive platform 101.

With continued reference to FIG. 8, a second heating device 305 and a second heat reflecting layer 306 are further disposed under the driving platform 101, the second heating device 305 is for heating the blank, and the second heat reflecting layer 306 is disposed at the second Below the second heating device 305, the second heating device 305 is insulated to avoid damage to other devices.

The first and

second columns

801, 802 are provided with linear guides for moving the transmission platform 101; the transmission platform 101 is lifted and lowered by the servo motor along the linear guide by a rack and pinion drive, the rack and pinion Mounted on the first and

second uprights

801, 802.

Also included is a product conveyor belt 702 corresponding to the unloading robot 701 and a supply station 402 corresponding to the feeding robot 401. The invention adopts an integrated control system (not shown) to control the automatic operation of the hot stamping forming production line, and the worker only needs to place the blank 01 on the feeding table 402, and then collect the product from the product conveying belt 702, and the whole process is automated. save human effort.

The billet to be heated 01 is transported by the feeding robot 401 from the feeding table 402 to the feed lifting device 10 in order. The driving device of the feeding lifting device 10 sequentially raises the conveying platform 101 from the bottommost layer to the highest layer in order, and feeds the blanks into the rolling layers 202 of the multi-layer heating furnace 20 layer by layer. Of course, when feeding, the conveying platform 101 is aligned with the scrolling layer 202. It should be noted that when the blank 01 to be heated is placed on the feeding lifting device 10 by the feeding robot 401, the conveying platform 101 of the feeding lifting device 10 has been previously raised to a fixed height corresponding to a certain layer of the rolling layer 202. If the solution of the embodiment 3 is used, the blank 01 has reached the Curie point by electromagnetic heating on the transport platform 101. Then, the inlet furnace door of the layer is opened, and the billet 01 to be heated is sent from the conveying platform 101 to the multi-layer heating furnace 20 Inside the furnace, the imported furnace door is then closed.

Next, the blank 01 is heated and insulated, and the exit door corresponding to a certain layer of the rolling layer 202 is opened. The bi-directional furnace roll 2021 on the rolling layer 202 in the furnace and the transfer platform 101 on the discharge lifting device 30 rotate the heated blank 01 out of the furnace. Previously, the discharge lifting device 30 has been raised to the height of the layer in advance. A transfer platform 101 with positioning means feeds the heated blank 01 horizontally to a fixed position. The outlet door of the multilayer heating furnace 20 is then closed. The blank transfer device 50 then picks up the heated blank 01 on the discharge lifting device 30 and feeds it into the press 60 for sheet pressing and pressure hardening. The stamped and cooled workpiece is taken out from the press machine 60 by the unloading robot 701, moved to the product conveyor belt 702 for packaging and storage by the staff, and the entire process is automated.

It should be noted that, as shown in FIG. 9, the multi-layer heating furnace may also be in the mode of Embodiment 1 or Embodiment 3. In addition, the truss may be disposed without passing from the multi-layer heating furnace to the press. A separate discharge lifting device 30 and a blank transfer device (robot) 50 are implemented.

It should be noted that the hot stamping forming line may feed the feeding lifting device 10 through a single feeding platform single robot, or may be matched with the corresponding feeding robot through a plurality of demolition trolleys 403 as shown in FIG. 401 feeds the feed lifting device 10, and the center line of the multi-layer heating furnace 20 and the center line of the press 60 may be parallel to each other as shown in FIG. 5, or the two may intersect, or the center line of the multi-layer heating furnace 20 as shown in FIG. Straight to the center line of the press 60.

Example 5

As shown in FIG. 11, the hot stamping production line includes a press machine 60, a truss 80 disposed on a central axis of one side of the press machine 60, a discharge lifting device 30 and a blank transfer device 50 disposed on the truss 80, a conveyor belt 702 disposed on the other side of the press machine 60, a first multilayer heating furnace 21 and a second multilayer heating furnace 22 disposed opposite to both sides of the blank transfer device 50, and the first multilayer heating furnace 21 corresponds to the first feeding system 41 and the first feeding lifting device 11, the second feeding lifting device 12 and the second feeding system 42 corresponding to the second multilayer heating furnace 22.

The first multilayer heating furnace 21 and the corresponding first feed lifting device 11 are selected from any one of the embodiments 1-3.

The second multi-layer heating furnace 22 and the corresponding second feed lifting device 12 are selected from any one of the embodiments 1-3.

The first feeding system 41 is the same as the second feeding system 42, taking the first feeding system 41 as an example, the feeding system comprising: a feeding table 401 and being disposed at the feeding table 401 and the first feeding A feeding robot 402 between the lifting devices 11. The blank is placed on a supply table 401, and the feeding robot 402 moves the blank on the supply table 401 It is sent to the first feed lifting device 11. The first feed lifting device 11 feeds the material into the corresponding first multi-layer heating furnace 21.

With continued reference to FIG. 6, a discharge robot 701 is disposed between the conveyor belt 702 and the press 60. The product after pressing and holding the quenching in the press 60 is taken out by the unloading robot 701, placed on the conveyor belt 702, and transferred by the conveyor belt 702 to the staff for receiving.

6-8, the structure and arrangement of the truss 80, the discharge lifting device 30 and the blank transfer device 50 are the same as those in the embodiment 4. In particular, it is pointed out that the transmission platform 101 is provided with a bidirectional feed roller 304. The bidirectional feed roller 304 controls the rotation direction according to the discharge condition of the two multi-layer heating furnaces, that is, the rotation direction thereof coincides with the rotation direction of the furnace roller 2021 in the multi-layer heating furnace being discharged, when the billet is accurately fed to After the position set on the transmission platform 101, the transmission platform 101 drives the blank to move to a certain position in a rapid vertical direction, and the vertical beam 804 drives the robot 501 to move to the corresponding position in the vertical direction, so that the robot 501 can pick up the material.

The working process of the invention is:

After the feeding robot 402 grabs the blank from the feeding table 401, it feeds into the first feeding lifting device 11 or the second feeding lifting device 12 according to a certain production tact, and further feeds the blank into the first multi-layer heating furnace. The blank is heated on a layer 21 or a layer of the second multilayer heating furnace 22.

After the billet is heated, the discharge lifting device 30 arrives in advance and waits for a discharge port of a certain layer in the first multilayer heating furnace 21 or the second multilayer heating furnace 22. Since the two sides of the discharge lifting device 30 are respectively equipped with a multi-layer heating furnace, the discharging lifting device 30 opens the corresponding blank positioning device according to the discharging condition of different multi-layer heating furnaces, and the bidirectional feeding roller 304 is discharging. In the multi-layer heating furnace, the rotation direction of the furnace rolls is the same. When the blank is accurately positioned to the set position by the bidirectional positioning device of the blank, the transmission platform 101 is quickly moved to the designated position, and the vertical beam 804 drives the robot 501 on the overhanging beam 805 at the same time. Move to the top of the blank to prepare the catch. The robot 501 grabs the blank from the drive platform 101 and effects a simple lateral composite linear motion to quickly feed the blank into the press 60. After the blank is formed on the press 60, it is taken out by the unloading robot 701 and placed on the conveyor belt 702.

The above work process is controlled by the integrated system (not shown), and has signal transmission and beat control in the billet transfer, transfer, heating, and molding.

Example 6

Referring to FIG. 12, the hot stamping forming production line includes: a guard rail 80, a demolition trolley 403 disposed in the guard rail 80, a feeding robot 401, and any one of the hot stamping forming heating devices of Embodiment 1-3. Billet transfer The shifting device 50, the press 60, and the chain conveyor 703, wherein the blank transfer device 50 is a press loading robot.

The key difference from the manner of FIG. 9 is that the hot stamping forming heating device 02 is two sets arranged in parallel, and the two sets of hot stamping forming heating devices 02 work simultaneously to feed a group of presses 60, which can realize each The production cycle of 3 pieces per minute has high production efficiency. The feeding robot 401 is disposed between the unwinding cart 403 and the hot stamping forming heating device 02, and the position of the press machine 60 corresponds to the two sets of hot stamping forming heating devices 02, and the billet transferring device 50 is located at the heat Between the press forming heating device 02 and the press machine 60, the plate chain conveyor 703 is disposed at the discharge end of the press machine 60, and the plated material in the press machine 60 is placed on the plate chain conveyor 703.

Example 7 Aluminum Sheet Hot Stamping Production Line

As shown in FIG. 13, in order to use it for hot stamping forming of an aluminum alloy sheet, the hot stamping forming line sequentially sets a detaching cart 403, a sprayer loading robot 404, a sprayer 405, and a feeding robot according to the blank 01 conveying process. 401. The hot stamping and forming heating device 02, the blank transfer device 50, the press machine 60, the unloading robot 701, the plate chain conveyor 703, the aging furnace loading robot 704, and the aging furnace 705 according to the second embodiment. The blank transfer device 50 is a high speed high temperature sheet conveying system.

The front and rear sides of the sprayer 405 are provided with a feeding end and a discharge end, and the sprayer loading robot 404 takes the blank from the loading position to the feeding end of the sprayer 405, and feeds the blank from the feeding end. In the sprayer 405, the sprayer 405 performs double-sided lubricant spraying, and after spraying, it is transferred to the discharge end, and is transferred by the feeding robot 401 to the hot stamping forming heating device 02.

The hot stamping forming heating furnace of the hot stamping forming heating device 02 employs a nozzle type heating method, and the multilayer heating furnace 20 includes one heating zone 206 and three heat insulating zones 207. Specifically, referring to FIG. 14, the multi-layer heating furnace 20 includes an outer casing (not shown) in which the heat insulating layer 201 is disposed, two horizontal rolling layers 202 and three horizontal heating layers are disposed in the outer casing. The heating layer is disposed to intersect with the rolling layer 202. The heating layer includes a gas pipe 2032 disposed between the two rolling layers 202 and a nozzle 2033 uniformly disposed along upper and lower sides of the gas pipe 2032. The nozzle 2033 is internal to the nozzle The billet is heated by blowing hot air.

The above embodiments are only intended to illustrate the technical idea of the present invention, and the purpose of the present invention is to understand the contents of the present invention and to implement the present invention, but it is not intended to limit the scope of the present invention. Equivalent variations made in accordance with the substance of the invention and their application in the various fields are encompassed within the scope of the invention.

Claims

The hot stamping forming heating device is characterized by comprising a feeding lifting device, a multi-layer heating furnace adjacent to the feeding lifting device, and a discharging lifting device adjacent to the multi-layer heating furnace, and the blanks are in turn After the feeding lifting device, the multi-layer heating furnace and the discharging lifting device;

The feeding lifting device and the discharging lifting device each comprise a conveying platform and a driving device for driving the conveying platform to lift, the conveying platform is provided with a plurality of driving rollers arranged in parallel;

The multi-layer heating furnace includes an outer casing with an insulating layer, a plurality of horizontal rolling layers and heating means disposed in the outer casing, the rolling layer being formed by a plurality of furnace rolls arranged in parallel, the furnace roll comprising ceramic a housing and a metal core disposed within the ceramic housing;

The feed lifting device and the discharge lifting device cooperate to feed or discharge the rolling layers of each layer.
A hot stamping forming heating apparatus according to claim 1, wherein said driving roller is a bidirectional roller, and said furnace roller is a bidirectional roller.
A hot stamping forming heating apparatus according to claim 1, wherein one end of said furnace roll is connected to a transmission wheel, and a bearing is provided in said outer casing through bearings at both ends.
The hot stamping and forming heating apparatus according to claim 1, wherein the material of the driving roller is made of a metal material.
A hot stamping forming heating apparatus according to claim 1, wherein said multi-layer heating furnace heats the billet by radiation, preferably electric resistance wire heating or nozzle heating.
A hot stamping forming heating apparatus according to claim 1, wherein said heating means comprises a plurality of heating layers in a horizontal direction, said heating layer is disposed to intersect said rolling layer, said heating layer being A plurality of electric resistance wire heating rods are formed in parallel.
A hot stamping forming heating apparatus according to claim 6, wherein a center axis of said furnace roll and a central axis of said heating rod are not coplanar in a vertical direction.
The hot stamping and forming heating device according to claim 1, wherein the feed lifting device and the discharging lifting device are guided by guide plates, and are disposed at corresponding positions of each rolling layer. Height stop position.
A hot stamping forming heating apparatus according to claim 1, wherein said discharge liter A heated blank positioning device is also provided on the transfer platform of the descending device.
A hot stamping forming heating apparatus according to claim 1, wherein a heating means and a heat reflecting layer are disposed under the conveying platform of the discharge lifting device.
A hot stamping forming heating apparatus according to any one of claims 1 to 10, wherein the multi-layer heating furnace comprises a heating zone and a heat retention zone in sequence along the billet feeding direction.
A hot stamping forming heating apparatus according to claim 11, wherein the temperature of the heating zone is 700 to 950 ° C, preferably 800 to 900 ° C, and the temperature of the heat retention zone is 900 to 950 °C.
A hot stamping forming heating apparatus according to any one of claims 1 to 10, wherein said feed lifting device further comprises an induction heating device, said induction heating device performing a blank on said conveying platform Induction heating.
A hot stamping forming heating apparatus according to claim 13, wherein said induction heating means comprises a flat type electromagnetic induction heater which is disposed on upper and lower sides of a plane of movement of the driving roller.
The hot stamping and forming heating apparatus according to claim 13, wherein the feed lifting device has a heating temperature of 700 to 800 ° C, preferably 740 to 760 ° C, in the furnace of the multi-layer heating furnace. The temperature is 850-950 °C.
A hot stamping line characterized by comprising at least one set of feed lifting devices according to any one of claims 1-15, at least one set of the multilayer heating furnace according to any one of claims 1-15, in accordance with a billet conveying process, At least one set of the discharge lifting device, blank transfer device and press of any of claims 1-15, the blank transfer device for transferring the heated blank to a press for hot press forming, further comprising controlling heat Integrated control system for the entire production cycle of the press forming line.
A hot stamping line according to claim 16, wherein said blank transfer means is a robot or a feed robot.
A hot stamping production line according to claim 16, wherein the hot stamping production line comprises, in sequence, a feeding robot, a feeding lifting device, a multilayer heating furnace according to claim 11 or 12, a truss, An output lifting device and a robot, a press and a discharge robot disposed on the truss, and an integrated control system.
A hot stamping production line according to claim 18, wherein said truss comprises a first upright, a second upright, a cross member disposed at the top of said first and second uprights, a vertical beam disposed on the beam, and disposed at Said An overhanging beam below the vertical beam, the discharge lifting device is disposed between the first and second columns and is raised and lowered along the first and second columns, and the blank transfer device is disposed on the overhanging beam a bottom portion, a bottom portion of the vertical beam is provided with a first slide for lateral movement of the overhanging beam, and a bottom portion of the overhanging beam is provided with a second slide for lateral movement of the blank transfer device, and the first and second columns are arranged A window is provided for the overhanging beam and the blank transfer device to pass through.
A hot stamping line according to claim 16, wherein said hot stamping line comprises said press, a truss disposed on a central axis of said press side, and a discharge lifting provided on said truss a device and a blank transfer device, a discharge robot and a conveyor belt disposed on the other side of the press, a first multilayer heating furnace and a second multilayer heating furnace disposed opposite to each side of the blank transfer device, and the first A multi-layer heating furnace is provided corresponding to the first feeding lifting device, the second feeding lifting device corresponding to the second multi-layer heating furnace, and an integrated control system.
A hot stamping line according to claim 16, wherein said hot stamping line comprises a first multilayer heating furnace, a first feed lifting device connected to said first multilayer heating furnace, and a first out a material lifting device, a second multi-layer heating furnace, a second feeding lifting device and a second discharging lifting device connected to the second multi-layer heating furnace, a blank transfer device, a press and an integrated control system.
An aluminum alloy sheet hot stamping production line, characterized in that, according to the blank conveying process, a sprayer, at least one set of the feeding lifting device according to any one of claims 1-15, at least one set of claims 1-5, A multilayer heating furnace, at least one set of the discharge lifting device of any of claims 1-15, a blank transfer device, a press, an aging furnace, and an integrated control system.
A hot stamping production line for an aluminum alloy sheet according to claim 22, wherein the multilayer heating furnace in the hot stamping forming heating apparatus is heated by a nozzle.