WO2019084910A1

WO2019084910A1 - Hot bending machine

Info

Publication number: WO2019084910A1
Application number: PCT/CN2017/109293
Authority: WO
Inventors: 胡伟; 彭海; 常瑞荆
Original assignee: 深圳市力沣实业有限公司
Priority date: 2017-11-03
Filing date: 2017-11-03
Publication date: 2019-05-09

Abstract

Provided is a hot bending machine (100), wherein same comprises a preheating module (1), a shaping module (2), a cooling module (3), a material feeding device (4), a material discharging device (5), and a control system for controlling the movement and temperature of the modules and devices. Neither the preheating module (1) nor the cooling module (3) of the hot bending machine (100) uses a mould to carry a workpiece (8) to be hot-bent. A mould is used in the shaping module (2), and the mould moves in the shaping module (2) in a rotating and circulating manner, and is kept at a certain high temperature. The preheating module (1) directly heats the workpiece to be hot-bent, and the cooling module (3) directly cools the hot-bent workpiece at the same time, thereby improving the heating and cooling efficiency, reducing the number of moulds in use, prolonging the service life of the mould, reducing the number of workstations, reducing the power consumption, and reducing the production costs.

Description

Hot bending machine

The invention belongs to the field of hot bending equipment, and in particular relates to a hot bending machine.

The existing glass hot bending equipment mostly adopts a transport track, so that the moving mold carrying glass sequentially passes through the preheating zone, the forming zone and the cooling zone to complete the processing of the glass.

In the production of pipelines, each station needs to carry the glass with a mold. However, the service life of the mold has a certain limit, so the demand for the mold is large; in addition, during the working process, the mold needs to repeatedly heat up and cool down, which affects the service life of the mold, and the heating and cooling process also wastes a large energy consumption. The heat transfer of the existing hot bending equipment to the glass in the preheating zone is heated by the heating device, and then indirectly transferred to the glass. Similarly, the cooling of the glass in the cooling zone is also indirectly cooled by the cooling device. Take the heat of the glass. Since indirect heat transfer or indirect cooling is inefficient, it is necessary to provide more stations in the two areas to ensure heating and cooling of the glass, which not only wastes time but also wastes energy.

Summary of the invention

The technical problem to be solved by the present invention is to provide a hot bending machine, which aims to solve the problems of low preheating and cooling efficiency, waste time and energy in the existing glass hot bending equipment; large mold consumption and high cost.

In order to solve the above technical problem, the present invention is achieved by a hot bending machine, comprising: a preheating module, a molding module, a cooling module, a charging device, a discharging device, and a module for controlling the hot bending machine. , the control system of each device movement and temperature;

The preheating module has a preheating device, the preheating device is electrically connected to the control system, and the control system controls the preheating device to directly preheat the hot bending workpiece;

The molding module has a mold transfer mechanism and a heating device, and places a plurality of molding dies, wherein the mold transfer mechanism and the heating device are electrically connected to the control system, and the control system controls the mold transfer mechanism to drive the plurality of Forming the mold to rotate cyclically in the molding module, and controlling the heating device to heat the plurality of molding dies;

The cooling module has a cooling device therein, and the cooling device is electrically connected to the control system, and the control system controls the cooling device to directly anneal and cool the workpiece after bending;

The charging device is disposed between the preheating module and the molding module, and is electrically connected to the control system, and the control system controls the loading device to grasp the preheated workpiece to be hot bent to the Forming a mold; the discharge device is disposed between the molding module and the cooling module, and is electrically connected to the control system, the control system controls the unloading device to grasp the hot-bent workpiece to the Cool the module inside.

Further, the molding module includes an auxiliary preheating zone, a pressing zone and a quenching zone, and the control system controls the die transfer mechanism to drive the plurality of molding dies along the auxiliary preheating zone, the pressing zone and the Xu The cooling zone is reciprocally moved, and the molding module is provided with a feeding port and a discharging port, and the feeding port is connected to the preheating module, and the discharging port is connected to the cooling module.

Further, the molding module further has a molding device disposed above the molding die for press forming the hot bending workpiece, the auxiliary preheating zone comprising a plurality of preheating stations, and the molding zone includes A plurality of press forming stations, the quenching zone comprises a plurality of quenching stations, and at least one of the stations is not provided with a movable forming die.

Further, the mold transfer mechanism includes a first horizontal transfer mechanism and a second horizontal transfer mechanism, wherein the first horizontal transfer mechanism and the second horizontal transfer mechanism both move in a horizontal plane, and the movement directions are perpendicular to each other, the first The horizontal transfer mechanism and the second horizontal transfer mechanism jointly drive the molding die to reciprocate in the molding module; the first horizontal transfer mechanism includes a fork push mechanism or a die push mold push mechanism; or the molding die is placed In the vehicle, the fork-type push mechanism or the carrier push-type push mechanism is applied to the carrier.

Further, the mold transfer mechanism includes a rotary power source and an annular plate mounted at a power output end of the rotary power source, and the plurality of molding dies are placed on the annular plate, the rotary power source The annular plate is driven to rotate, thereby driving the plurality of molding dies to move in a circular motion inside the molding module.

Further, the molding die includes an upper die and a lower die, and the molding die is made of any one of graphite, ceramic, and alloy metal, and the rotary cycle of the molding die in the molding module is an upper die and The lower mold is moved together, or the upper mold is fixed, and the lower mold is moved.

Further, the hot bending machine further includes a mold cleaning device installed between the molding module and the cooling module or between the molding module and the preheating module.

Further, the preheating module includes a furnace body, and the furnace body is internally provided with a preheating conveying device for carrying and conveying a workpiece to be bent, the preheating conveying device is electrically connected to the control system, and the preheating The preheating device may be provided on the upper, lower, left and right sides of the heat transfer device.

Further, the preheating conveyor is provided with a plurality of positioning devices for fixing the workpiece to be hot-bent, and the workpiece of the workpiece is detected at the end of the preheating conveyor near the molding module for detecting the presence or absence of a workpiece to be hot-bent. The workpiece detecting element is electrically connected to the control system.

Further, the cooling module includes a cavity, and the cavity is internally provided with a cooling conveying device for carrying the workpiece after the hot bending, and the cooling device and the temperature can be provided on the upper, lower, left and right sides of the cooling conveying device. A compensation device that is either air-cooled or water-cooled.

Further, the loading device and the discharging device are respectively provided with a grasping mechanism capable of grasping a hot bending workpiece at a high temperature, the grasping mechanism comprising a vacuum adsorption device having a suction nozzle, and the vacuum adsorption device The end of the nozzle is wrapped with a heat insulating material having high temperature resistance and gas permeability, and the heat insulating material is any one of high temperature resistant resin fiber, ceramic fiber, asbestos fiber, glass fiber, and metal mesh.

Further, the preheating module, the molding module, and the cooling module work independently of each other or independently into different small machine systems or combine to work as one integral machine system.

Further, the molding module is filled with a shielding gas, and the molecular weight of the shielding gas is less than 40.

Compared with the prior art, the present invention has the beneficial effects that the hot bending machine of the present invention comprises a preheating module, a molding module, a cooling module, a charging device, a discharging device and a module for controlling the hot bending machine. , the control system of each device movement and temperature. The preheating module and the cooling module of the hot bending machine do not use the mold to carry the hot bending workpiece, but only use the mold at the molding module, the mold rotates and rotates in the molding module, and the equipment is in the working process, the mold is in each work The position maintains a certain high temperature and does not need to be repeatedly subjected to high temperature to low temperature, and then rises to a high temperature process, thus reducing the amount of mold used and prolonging the service life of the mold. The preheating module directly preheats the hot-bent workpiece through the preheating device, instead of indirectly transferring heat through the mold, and the preheating efficiency is improved. At the same time, the cooling module directly anneals and cools the workpiece after the hot bending through the cooling device, and the cooling efficiency is greatly improved; the improvement of the preheating and cooling efficiency can reduce the number of stations, thereby reducing energy consumption and reducing production cost. In addition, the hot bending machine forms an automated production mode by using a charging device and a discharging device, and no need to manually put the workpiece to be hot-bent into the mold, only need to set the parameters in advance, and then put in the feeding port of the preheating module. After the workpiece is hot-bent, the workpiece after the hot bending is taken out at the discharge port of the cooling module, which is convenient for the construction personnel to operate.

1 is a schematic structural diagram of a module of a hot bending machine according to an embodiment of the present invention;

2 is a schematic view of a mold included in a hot bending machine according to an embodiment of the present invention;

3 is a schematic view of a suction nozzle of a vacuum adsorption device included in a hot bending machine according to an embodiment of the present invention;

4 is a flow chart of a hot bending machine according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1 , a hot bending machine 100 according to an embodiment of the present invention includes a preheating module 1 , a molding module 2 , a cooling module 3 , a charging device 4 , a discharging device 5 , a mold cleaning device 6 , and A control system (not shown) for controlling the movement of each module of the hot bending machine and each device, and the control system in the embodiment of the present invention is a PLC (Programmable) Logic Controller, but not limited to the type of control system.

Specifically, the preheating module 1 has a preheating device (not shown) therein, and the preheating device is electrically connected to the control system, and the control system controls the preheating device to directly preheat the workpiece heat. In the preheating module 1, the hot-bent workpiece 8 is preheated directly by the preheating device instead of indirectly through the mold, thereby improving the preheating efficiency. The preheating module 1 includes a furnace body, and the furnace body is internally provided with a preheating conveying device (not shown) for carrying and conveying the workpiece 8 to be thermally bent, and the preheating conveying device is electrically connected to the control system. And the preheating device can be provided on the upper, lower, left and right sides of the preheating conveyor.

The preheating conveyor is provided with a plurality of positioning devices (not shown) for fixing the workpiece to be bent, and the end of the preheating conveyor is provided with a workpiece detecting component (not shown) near the molding module. The workpiece detecting element is electrically connected to the control system for detecting the presence or absence of a workpiece to be bent.

With continued reference to FIG. 2, the molding module 2 has a mold transfer mechanism (not shown) and a heating device (not shown), and a plurality of molding dies 7 are placed. The mold transfer mechanism and the heating device are electrically connected to the control system, and the control system controls the mold transfer mechanism to drive the plurality of molding dies 7 to circulate and move in the molding module 2, and control the heating device pair The plurality of molding dies 7 are heated. The molding module 2 further has a molding device (not shown) provided above the molding die 7 for press forming a hot bending workpiece. The molding module 2 includes an auxiliary preheating zone 20, a profiled zone 21, and a quench zone 22. The auxiliary preheating zone 20 includes a plurality of preheating stations; the profiling zone 21 includes a plurality of pressing stations, and the quenching zone 22 includes a plurality of quenching stations, one of which is one of the stations. The molding die 7 is not placed, and a set of molding dies 7 are placed in the remaining stations so that all the molding dies 7 can be circulated in the molding module 2 along the auxiliary preheating zone 20, the molding zone 21, and the cold zone 22. Reciprocating.

The cooling module 3 includes a cavity (not shown), and the cavity is internally provided with a cooling conveyor (not shown) for carrying the workpiece 8 after the hot bending, the cooling conveyor is up, down, left, and right. The side may be provided with a cooling device and a temperature compensating device, and the cooling device is either air-cooled or water-cooled. The cooling device and the temperature compensation device are electrically connected to the control system, and the control system controls the cooling device to directly anneal and cool the workpiece after the hot bending; and controls the temperature compensation device to compensate the temperature.

The molding module 2 is provided with a feeding port and a discharging port, the preheating module 1 is in communication with the feeding port, the cooling module 3 is in communication with the discharging port, and the charging device 4 is installed at Between the preheating module 1 and the molding module 2, the unloading device 5 is installed between the molding module 2 and the cooling module 3. The charging device 4 and the unloading device 5 are electrically connected to the control system, and the control system controls the charging device 4 to grasp the preheated workpiece 8 to be hot-baked onto the molding die 7; At the same time, the control system controls the unloading device 5 to grab the hot-bent workpiece into the cooling module 3.

In the embodiment of the present invention, the loading device 4 and the unloading device 5 are respectively provided with a grasping mechanism (not shown) capable of grasping a hot bending workpiece at a high temperature. Referring to FIG. 3, the grasping mechanism The utility model comprises a vacuum adsorption device with a suction nozzle 9 , wherein the end of the suction nozzle 9 of the vacuum adsorption device is covered with a heat insulating material having high temperature resistance and gas permeability, and the heat insulating material is high temperature resistant resin fiber, ceramic fiber and asbestos fiber. Any one of glass fiber and metal mesh.

The mold transfer mechanism can drive the forming mold 7 to perform a rectangular rotary motion or a circular motion in the molding module 2. When the mold transfer mechanism drives the molding die 7 to perform a rectangular rotary motion in the molding module 2, the mold transfer mechanism includes a first horizontal transfer mechanism and a second horizontal transfer mechanism, and the first horizontal transfer mechanism and the second level The transfer mechanisms are all moved in a horizontal plane, and the moving directions are perpendicular to each other, and the plurality of molding dies 7 are cyclically reciprocated by the first horizontal transfer mechanism and the second horizontal transfer mechanism. The first horizontal transfer mechanism includes a fork-type push mechanism or a die push-type push mechanism; or the molding die 7 is placed in the carrier, and the fork-type push mechanism or the carrier push-type push mechanism is applied to the carrier . The molding die 7 includes an upper die 71 and a lower die 72. The rotary cycle of the molding die 7 in the molding module 2 is such that the upper die 71 and the lower die 72 are moved together or the upper die 71 is fixed, and the lower die 72 is fixed. The material of the molding die 7 is one of graphite, ceramics, and alloy metal.

When the mold transfer mechanism drives the forming mold 7 to perform a circular motion in the molding module 2, the mold transfer mechanism includes a rotary power source and an annular plate, and the annular plate is mounted on the power output end of the rotary power source. A plurality of forming dies are placed on the annular plate, and the rotating power source drives the annular plate to rotate, thereby driving the plurality of forming dies to move in a circular motion inside the forming module.

The mold cleaning device 6 is installed between the molding module 2 and the cooling module 3, or between the molding die 2 and the preheating module 1 for cleaning the molding die 7. The preheating module 1, the molding module 2, and the cooling module 3 can work independently of each other or independently into different small machine systems or work together into one integral machine system; the molding module 2 can be filled or not filled with protection The gas, the shielding gas has a molecular weight of less than 40.

As shown in FIG. 4, a working flow chart of a hot bending machine according to an embodiment of the present invention is shown. In step S00, the surface of the hot bending workpiece 8 is coated with a protective coating: the protective coating is a specially developed hot bending workpiece 8 protective coating, which can improve the surface shape of the workpiece during the hot bending process of the workpiece. The role, such as the appearance of bumps on the surface of the glass after hot bending, mold printing and other surface problems. In step S00, in order to select an implementation item, when the workpiece is hot-bent, the step S00 can also be skipped, and the step S01 is directly entered. In step S01, the material is preheated: the workpiece to be hot-bent is placed in the fixed position of the conveying device in the preheating module 1, and the preheating device on the upper and lower sides of the conveying device is preheated to raise the temperature to make the cavity reach the set temperature. Heat the hot-bent workpiece. The workpiece is transferred to the inlet of the molding module 2, and step S02 is performed. The workpiece is loaded into the high temperature molding die 7 to continue preheating: the preheated workpiece to be hot bent is placed into the auxiliary preheating zone 20 by the charging device 4. In the forming mold 7 of the station, the forming mold 7 is heated to a certain high temperature by a heating device that drives the temperature of the mold, and the forming mold 7 is transferred to the next station via the transfer mechanism, and passes through all the stations in the auxiliary pressing area. Thereafter, the molding die 7 enters the molding area 21. Step S03, hot press forming: the pressing section 21 includes a plurality of pressing stations, and the workpiece can be formed in sections. Each station is provided with a heating device for driving the forming mold 7 to heat up, and at the same time, a driving upper mold 71 is provided to the lower mold. 72 A driving device that moves and applies pressure, and the mold 7 that carries the workpiece 8 applies a bending force to the workpiece through the driving device at a set suitable temperature to thermally bend the workpiece. The mold 7 passes through all the stations in the pressing zone, enters the cold zone 22 through the transfer mechanism, and performs step S04. The annealing process: the temperature of each station in the cold zone 22 is set according to the characteristic curve of the workpiece, so that the workpiece is slowly cooled and removed after the hot bending. Surface thermal stress. The forming die 7 reaches the last station of the cold zone 22 via the transfer mechanism, and proceeds to step S05 to unload the workpiece, and the workpiece is cooled: the workpiece 8 which is hot-bent in the forming die 7 is taken out by the unloading device 5 and placed in the cooling module 3 The workpiece is rapidly cooled by a cooling device. In step S06, the molding die 7 is cleaned by the mold cleaning device 6, and then the molding die 7 is returned to the initial position, and the mold is cleaned by the mold cleaning device 6, and the cleaned mold still maintains a certain high temperature, and then returned through the transfer mechanism. To the auxiliary preheating first station heating and heating, until the next piece to be hot-bent workpiece is placed, the next round of processing, at the same time, the hot-bent workpiece is cooled by the cooling module 3 to normal temperature and taken out. If the workpiece is hot-bent, the S00 step is performed, and the S07 step is performed correspondingly, and the photoresist removes the protective coating: the protective coating previously applied on the surface of the workpiece 8 after the hot bending is removed by a special film-removing agent.

In summary, the hot bending machine 100 provided by the embodiment of the present invention does not use a mold to carry the workpiece to be hot-bent on the preheating module 1 and the cooling module 3, and uses the mold 7 at the molding module 2, and the mold 7 In the molding module, the rotary motion in the 2 is maintained and a certain high temperature is maintained during the operation of the device. In this way, the amount of mold used can be reduced and the life of the mold can be extended. In the preheating module 1, the workpiece to be heated is directly heated, instead of indirect heat transfer through the mold, the heating efficiency is improved; at the same time, the cooling module 3 directly cools the workpiece after the hot bending, and the cooling effect is greatly improved; Increased cooling efficiency reduces the number of stations, which reduces energy consumption and reduces production costs. In addition, the hot bending machine forms an automated production mode by using the charging device 4, the unloading device 5 and the mold cleaning device 6, and no need to manually put the workpiece to be hot-bent into the mold, only setting the parameters in advance, and then proceeding The material is placed in the material to be hot-bent, and the workpiece after the hot bending is taken out at the discharge port, which is convenient for the construction personnel to operate.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A hot bending machine, comprising: a preheating module, a molding module, a cooling module, a charging device, a discharging device, and a control system for controlling each module of the hot bending machine and the movement and temperature of each device;
The preheating module has a preheating device, the preheating device is electrically connected to the control system, and the control system controls the preheating device to directly preheat the hot bending workpiece;
The molding module has a mold transfer mechanism and a heating device, and places a plurality of molding dies, wherein the mold transfer mechanism and the heating device are electrically connected to the control system, and the control system controls the mold transfer mechanism to drive the plurality of Forming the mold to rotate cyclically in the molding module, and controlling the heating device to heat the plurality of molding dies;
The cooling module has a cooling device therein, and the cooling device is electrically connected to the control system, and the control system controls the cooling device to directly anneal and cool the workpiece after bending;
The charging device is disposed between the preheating module and the molding module, and is electrically connected to the control system, and the control system controls the loading device to grasp the preheated workpiece to be hot bent to the Forming a mold; the discharge device is disposed between the molding module and the cooling module, and is electrically connected to the control system, the control system controls the unloading device to grasp the hot-bent workpiece to the Cool the module inside.
The hot bending machine according to claim 1, wherein said molding module comprises an auxiliary preheating zone, a pressing zone and a quenching zone, and said control system controls said die transfer mechanism to drive said plurality of forming dies along The auxiliary preheating zone, the pressing zone and the quenching zone are cyclically reciprocated, and the forming module is provided with a feeding port and a discharging port, and the feeding port is connected with the preheating module, and the discharging port is The cooling module is switched on.
The hot bending machine according to claim 2, wherein the molding module further comprises a molding device disposed above the molding die for press forming the hot bending workpiece, the auxiliary preheating zone comprising a plurality of The preheating station comprises a plurality of press forming stations, wherein the quenching zone comprises a plurality of quenching stations, and at least one of the stations is not provided with a movable forming die.
A hot bending machine according to claim 1, wherein said mold transfer mechanism comprises a first horizontal transfer mechanism and a second horizontal transfer mechanism, said first horizontal transfer mechanism and said second horizontal transfer mechanism being in a horizontal plane Movement, and the movement direction is perpendicular to each other, the first horizontal transfer mechanism and the second horizontal transfer mechanism jointly drive the molding die to reciprocate in the molding module; the first horizontal transfer mechanism includes a fork push mechanism or a mold Pushing the mold-type pushing mechanism; or placing the forming mold into the carrier, and performing a fork-type pushing mechanism or a carrier-pushing-type pushing mechanism on the carrier.
A hot bending machine according to claim 1, wherein said mold transfer mechanism comprises a rotary power source and an annular plate, said annular plate being mounted at a power output end of said rotary power source, said plurality of molding dies being placed at The rotary power source drives the annular plate to rotate, thereby driving the plurality of molding dies to move in a circular motion inside the molding module.
The hot bending machine according to claim 1, wherein the molding die comprises an upper die and a lower die, and the molding die is made of any one of graphite, ceramic, and alloy metal, and the molding die is The rotary cycle movement mode in the molding module is that the upper die and the lower die are moved together, or the upper die is fixed, and the lower die is moved.
A hot bending machine according to claim 1, wherein said hot bending machine further comprises a mold cleaning device installed between the molding module and the cooling module, or mounted on the molding module and the preheating module. between.
A hot bending machine according to claim 1, wherein said preheating module comprises a furnace body, and said furnace body is provided with a preheating conveying device for carrying and conveying a workpiece to be thermally bent, said preheating conveying device The control system is electrically connected, and the preheating device can be provided on the upper, lower, left and right sides of the preheating conveyor.
A hot bending machine according to claim 8, wherein said preheating conveying means is provided with a plurality of positioning means for fixing the workpiece to be bent, and said preheating conveying means is provided adjacent to the molding module. And detecting a workpiece detecting component for the presence or absence of a hot bending workpiece, the workpiece detecting component being electrically connected to the control system.
A hot bending machine according to claim 1, wherein said cooling module comprises a cavity, said cavity being internally provided with a cooling transfer device for carrying the workpiece after hot bending, said cooling transfer device being up and down, A cooling device and a temperature compensating device may be provided on the left and right sides, and the cooling device is either air-cooled or water-cooled.
A hot bending machine according to claim 1, wherein said loading device and said unloading device are provided with a grasping mechanism for grasping a hot-bent workpiece at a high temperature, said gripping mechanism comprising suction a vacuum adsorption device for a mouth, wherein a nozzle end of the vacuum adsorption device is wrapped with a heat insulating material having high temperature resistance and gas permeability, and the heat insulating material is high temperature resistant resin fiber, ceramic fiber, asbestos fiber, glass fiber, metal Any of the nets.
The hot bending machine according to claim 1, wherein the preheating module, the molding module, and the cooling module work independently of each other or independently into different small machine systems or are combined into one integral machine system for operation.
The hot bending machine according to claim 1, wherein said molding module is filled with a shielding gas, and said shielding gas has a molecular weight of less than 40.