Thermal forming production line, vacuum hot pressing processing method and inert gas atmosphere heating method

Abstract

The invention provides a thermal forming production line, a vacuum hot pressing machining method and an inert gas atmosphere heating method. The thermal forming production line comprises a first vacuum pipeline, a second vacuum pipeline and a third vacuum pipeline, the feeding area is communicated with a second vacuum pipeline, the second vacuum pipeline is communicated with a second vacuum unit, the discharging area is communicated with a third vacuum pipeline, and the third vacuum pipeline is communicated with a third vacuum unit; a plurality of first gas pipelines are laid at the bottom of the heating part, and the plurality of first gas pipelines are communicated with the plurality of heating areas; and a second gas pipeline is laid on the side wall of the feeding area, and a third gas pipeline is laid on the side wall of the discharging area, so that the thermal forming production line not only can be used for processing in a vacuum environment, but also can be used for processing in an inert gas blowing environment, and the use convenience of the thermal forming production line in the embodiment can be greatly improved.

Description

Technical Field

[0001] The present application belongs to the technical field of thermoforming, and in particular relates to a thermoforming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method. Background Art

[0002] In the existing technology, the existing common atmosphere furnace and vacuum furnace structure are improved as a whole, but in practice they cannot meet the various complex technical process requirements of today's thermoforming industry. Specifically, in the production process, the same production line cannot meet each other's production process requirements, which will result in high equipment investment costs and high production and operation costs. At the same time, the equipment interchangeability is poor, the production process is single, and it cannot meet more market changes.

[0003] To address the above problems, no effective solution has been proposed yet.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The purpose of the present application is to provide a hot forming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method to solve the problem that only one heating furnace cannot be used as an atmosphere furnace and a vacuum furnace for processing at the same time.

[0006] A thermoforming production line provided in this application comprises:

[0007] A plurality of adjacent and connected heating zones, wherein the plurality of heating zones constitute a heating portion;

[0008] A feeding area and a discharging area connected to both ends of the heating part;

[0009] The heating part is connected with a first vacuum pipeline, which is connected with a first vacuum unit and is used to perform vacuum treatment on multiple heating areas in the heating part; the feeding area is connected with a second vacuum pipeline, which is connected with a second vacuum unit; the discharging area is connected with a third vacuum pipeline, which is connected with a third vacuum unit and is used to perform vacuum treatment on the feeding area and the discharging area;

[0010] Furthermore, a plurality of first gas pipelines are laid at the bottom of the heating portion, and the plurality of first gas pipelines are connected to the plurality of heating zones for filling the plurality of heating zones with inert gas. A second gas pipeline is laid on the side wall of the feed zone, and a third gas pipeline is laid on the side wall of the discharge zone for filling the feed zone and the discharge zone with inert gas.

[0011] Preferably, a plurality of the heating zones are each provided with a smoke exhaust port and a detection component.

[0012] Preferably, the detection assembly includes a vacuum gauge, a differential pressure transmitter and an oxygen content analyzer.

[0013] Preferably, the second gas pipeline and the third gas pipeline are both connected to the first gas pipeline.

[0014] Preferably, one end of the feed zone away from the heating zone is connected to a feed truss, and one end of the discharge zone away from the heating zone is connected to a discharge truss.

[0015] Preferably, a first furnace door is provided between the feeding zone and the heating part, and a second furnace door is provided between the discharging zone and the heating part.

[0016] A vacuum hot pressing method, characterized in that the processing is performed using the above-mentioned hot forming production line, comprising the following steps:

[0017] Adjusting the vacuum degree in the feeding zone, the first heating zone, the second heating zone, the third heating zone, the fourth heating zone and the discharging zone to a preset value through the first vacuum pipeline, the second vacuum pipeline and the third vacuum pipeline;

[0018] providing a workpiece for processing;

[0019] Transporting the workpiece to the feeding area to feed the workpiece;

[0020] transporting the workpiece in the feeding zone to a first heating zone for first heating;

[0021] transporting the workpiece that has completed the first heating to the second heating zone for a second heating;

[0022] transporting the workpiece that has completed the second heating to a third heating zone for a third heating;

[0023] transporting the workpiece that has completed the third heating to the fourth heating zone for the fourth heating;

[0024] The workpiece that has completed the fourth heating is transported to a discharging area for discharging the workpiece.

[0025] Preferably, a first furnace door is provided between the feeding zone and the heating part, and a second furnace door is provided between the discharging zone and the heating part, and the first furnace door and the second furnace door remain closed during the first heating, second heating, third heating and fourth heating of the workpiece.

[0026] Preferably, the vacuum degree in the first heating zone, the second heating zone, the third heating zone and the fourth heating zone ranges from 0.01 Pa to 1000 Pa.

[0027] An inert gas atmosphere heating method, characterized in that the above-mentioned hot forming production line is used for processing, comprising the following steps:

[0028] The inert gas content in the feed zone, the first heating zone, the second heating zone, the third heating zone, the fourth heating zone and the discharge zone is adjusted to a preset value through a plurality of first gas pipelines, second gas pipelines and third gas pipelines;

[0029] providing a workpiece for processing;

[0030] Transporting the workpiece to the feeding area to feed the workpiece;

[0031] transporting the workpiece in the feeding zone to a first heating zone for first heating;

[0032] transporting the workpiece that has completed the first heating to the second heating zone for a second heating;

[0033] transporting the workpiece that has completed the second heating to a third heating zone for a third heating;

[0034] transporting the workpiece that has completed the third heating to the fourth heating zone for the fourth heating;

[0035] The workpiece that has completed the fourth heating is transported to the discharging area for discharging the workpiece.

[0036] Preferably, the inert gas is nitrogen, and the nitrogen content range is ρ>99.99%.

[0037] Preferably, a first furnace door is provided between the feeding zone and the heating part, and a second furnace door is provided between the discharging zone and the heating part, and the first furnace door and the second furnace door remain closed during the first heating, second heating, third heating and fourth heating of the workpiece.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention provides a first vacuum pipeline, which is connected to the first vacuum unit; the feeding area is connected to the second vacuum pipeline, which is connected to the second vacuum unit; the discharging area is connected to the third vacuum pipeline, which is connected to the third vacuum unit; a plurality of first gas pipelines are laid on the bottom of the heating part, and the plurality of first gas pipelines are connected to a plurality of heating areas; a second gas pipeline is laid on the side wall of the feeding area, and a third gas pipeline is laid on the side wall of the discharging area, so that the thermoforming production line can not only perform vacuum environment processing, but also perform blowing into an inert gas environment processing, thereby greatly improving the convenience of using the thermoforming production line in this embodiment.

[0040] 2. The present invention uses a smoke exhaust port and a detection component, and the detection component includes a vacuum gauge, a differential pressure transmitter and an oxygen content analyzer, so that various parameters in the heating zone can be monitored, thereby facilitating technical personnel in the field to make timely adjustments to the processing conditions in the heating zone.

[0041] 3. The present invention can protect the heating conditions of multiple heating zones in the heating part by providing the first furnace door and the second furnace door, thereby significantly improving the processing effect in the heating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 It is a production line structure diagram of a thermoforming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method provided in an embodiment of the present application;

[0044] Figure 2 It is a top view of the production line structure of a thermoforming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method provided in an embodiment of the present application;

[0045] Figure 3 It is a first gas pipeline arrangement structure diagram of a production line of a thermoforming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method provided in an embodiment of the present application;

[0046] Figure 4 This is a first vacuum pipeline layout structure diagram of a production line of a thermoforming production line, a vacuum hot pressing processing method and an inert gas atmosphere heating method provided in an embodiment of the present application.

[0047] In the figure: 1. feeding area; 2. first heating area; 3. second heating area; 4. third heating area; 5. fourth heating area; 6. discharging area; 7. first vacuum pipeline; 8. first vacuum unit; 9. second vacuum pipeline; 10. second vacuum unit; 11. third vacuum pipeline; 12. third vacuum unit; 13. first gas pipeline; 14. second gas pipeline; 15. third gas pipeline; 16. smoke exhaust port; 17. detection component; 18. first furnace door; 19. second furnace door. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0049] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "back", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an implementation method of the present invention based on its overall structure.

[0050] Reference Figure 1 As shown, the embodiment of the present application provides a thermoforming production line, comprising:

[0051] A plurality of adjacent and connected heating zones, the plurality of heating zones forming a heating portion;

[0052] A feeding zone 1 and a discharging zone 6 connected to both ends of the heating section;

[0053] The heating part is connected with a first vacuum pipe 7, which is connected with a first vacuum unit 8, and is used to perform vacuum treatment on multiple heating areas in the heating part; the feeding area 1 is connected with a second vacuum pipe 9, which is connected with a second vacuum unit 10; the discharging area 6 is connected with a third vacuum pipe 11, which is connected with a third vacuum unit 12, and is used to perform vacuum treatment on the feeding area 1 and the discharging area 6;

[0054] In addition, a plurality of first gas pipelines 13 are laid on the bottom of the heating part, and the plurality of first gas pipelines 13 are connected to the plurality of heating zones for filling the plurality of heating zones with inert gas. A second gas pipeline 14 is laid on the side wall of the feed zone, and a third gas pipeline 15 is laid on the side wall of the discharge zone for filling the feed zone 1 and the discharge zone 6 with inert gas.

[0055] According to the above structure, please refer to Figure 1 , a person skilled in the art can set a thermoforming production line including multiple heating zones and a feed zone 1 and a discharge zone 6. Specifically, the heating zones are arranged adjacent to each other and are interconnected, and multiple heating zones can form a heating section for heating the workpiece. Furthermore, the feed zone 1 and the discharge zone 6 are arranged at both ends of the heating section.

[0056] With the above structure, those skilled in the art can heat the workpiece by setting the feeding zone 1 and the discharging zone 6 at both ends of the heating part. It can be understood that in the above arrangement, the heating part has multiple heating zones, so that the workpiece can be heated continuously multiple times.

[0057] In one embodiment, those skilled in the art may configure the heating portion to be connected to a first vacuum pipe 7, which is connected to a first vacuum unit 8. The feeding area 1 is connected to a second vacuum pipe 9, which is connected to a second vacuum unit 10, and the discharging area 6 is connected to a third vacuum pipe 11, which is connected to a third vacuum unit 12.

[0058] In this embodiment, the first vacuum pipe 7 and the first vacuum unit 8 are connected to each other to perform vacuum suction on multiple heating zones in the heating part. Correspondingly, the second vacuum unit 10 and the second vacuum pipe 9 are used to perform vacuum suction on the feeding zone, and the third vacuum unit 12 and the third vacuum pipe 11 are used to perform vacuum suction.

[0059] It is worth noting that in the above-mentioned setting structure, the first vacuum pipe 7, the second vacuum pipe 9 and the third vacuum pipe 11 are all connected to independent vacuum units, so that the vacuuming actions of the first vacuum pipe 7, the second vacuum pipe 9 and the third vacuum pipe 11 can be performed independently.

[0060] According to the above structure, those skilled in the art can set up a thermoforming production line to perform vacuum processing, so that the material can be vacuum processed.

[0061] In the above embodiment, those skilled in the art may also arrange that a plurality of first gas pipelines 13 are laid at the bottom of the heating part, and the plurality of first gas pipelines 13 are connected to the plurality of heating zones. A second gas pipeline 14 is laid on the side wall of the feeding zone, and a third gas pipeline 15 is laid on the side wall of the discharging zone.

[0062] By means of the above structure, inert gas can be blown into a plurality of heating zones, and inert gas can be blown into the feed zone 1 and the discharge zone 2 through the second gas pipeline 14 and the third gas pipeline 15 .

[0063] According to the above settings, the thermoforming production line in this embodiment can set up an inert gas environment through the first gas pipeline 13, the second gas pipeline 14 and the third gas pipeline 15, so as to reduce the oxygen content in the thermoforming production line and achieve the purpose of stable processing.

[0064] In summary, the technicians in this field set up a first vacuum pipe 7, which is connected to the first vacuum unit 8; the feeding area 1 is connected to the second vacuum pipe 9, which is connected to the second vacuum unit 10, and the discharging area 6 is connected to the third vacuum pipe 11, which is connected to the third vacuum unit 12; a plurality of first gas pipes 13 are laid on the bottom of the heating part, and the plurality of first gas pipes 13 are connected to a plurality of heating areas; a second gas pipe 14 is laid on the side wall of the feeding area, and a third gas pipe 15 is laid on the side wall of the discharging area, so that the thermoforming production line can not only perform vacuum environment processing, but also can perform blowing into an inert gas environment processing, thereby greatly improving the convenience of using the thermoforming production line in this embodiment.

[0065] In an optional embodiment, those skilled in the art may further configure the heating zones. Preferably, a smoke exhaust port 16 and a detection component 17 are provided in each of the plurality of heating zones.

[0066] By means of the above structure, the gas pressure in the heating zone can be balanced by installing the smoke exhaust port 16 in the heating zone. The detection component 17 can monitor the vacuum degree and pressure in the heating zone.

[0067] More preferably, the detection assembly 17 includes a vacuum gauge, a differential pressure transmitter and an oxygen content analyzer. That is, those skilled in the art can monitor the vacuum degree in the multiple heating zones by the vacuum gauge, monitor the pressure in the multiple heating zones by the differential pressure transmitter, and monitor the oxygen content in the heating zones by the oxygen content analyzer.

[0068] In summary, through the above-mentioned smoke exhaust port 16 and detection component 17, and the detection component 17 includes a vacuum gauge, a differential pressure transmitter and an oxygen content analyzer, various parameters in the heating zone can be monitored, so that technical personnel in the field can make timely adjustments to the processing conditions in the heating zone.

[0069] In an optional embodiment, a person skilled in the art may also install a dew point meter in the heating zone, so as to detect the dew point in the heating zone. In the above embodiment, when the thermoforming production line is used for processing in an inert gas environment, in order to protect the side cavity electrical components, the interface of the first gas pipeline 13 is installed in the side cavity of the heating zone, the differential pressure transmitter detects the side cavity air pressure and the internal air pressure in the middle of the heating zone, and a smoke exhaust port 16 is designed at the top of the heating zone to ensure that the side cavity air pressure of the heating zone is slightly higher than the internal air pressure of the heating zone.

[0070] In the above-mentioned setting, those skilled in the art may further set a second gas pipeline 14 and a third gas pipeline 15. Preferably, the second gas pipeline 14 and the third gas pipeline 15 are both connected to the first gas pipeline 13. That is, in this embodiment, the inert gas may be blown into the heating zone, the feed zone 1, and the discharge zone 6 at the same time. It is understood that in this embodiment, the inert gas may be set to be nitrogen.

[0071] In a further configuration, preferably, a feeding truss is connected to one end of the feeding zone 1 away from the heating zone, and a discharging truss is connected to one end of the discharging zone 6 away from the heating zone. The configuration of the feeding truss and the discharging truss can make the feeding and discharging process of the thermoforming production line more stable and convenient.

[0072] In the above arrangement, the feeding area 1 and the discharging area 6 are arranged at both ends of the heating part. Preferably, a first furnace door 18 is arranged between the feeding area 1 and the heating part, and a second furnace door 19 is arranged between the discharging area 6 and the heating part. That is, when the workpiece to be processed needs to be transported to the heating part for heating, the first furnace door 18 is opened; when the workpiece to be processed is processed in the heating part, the first furnace door 18 and the second furnace door 19 remain in a closed state; after the workpiece is processed, the second furnace door 19 is opened so that the workpiece can be discharged.

[0073] In summary, those skilled in the art set the first furnace door 18 and the second furnace door 19 so as to protect the heating conditions of multiple heating zones in the heating part, thereby significantly improving the processing effect in the heating part.

[0074] This specification also provides a vacuum hot pressing processing method, which is characterized by using the above-mentioned hot forming production line for processing, including the following steps:

[0075] The vacuum degrees in the feeding zone 1, the first heating zone 2, the second heating zone 3, the third heating zone 4, the fourth heating zone 5 and the discharging zone 6 are adjusted to a preset value through the first vacuum pipe 7, the second vacuum pipe 9 and the third vacuum pipe 11;

[0076] providing a workpiece for processing;

[0077] Transporting the workpiece to the feeding area 2 for feeding the workpiece;

[0078] The workpieces in the feeding zone 1 are transported to the first heating zone 2 for the first heating;

[0079] The workpiece that has completed the first heating is transported to the second heating zone 3 for the second heating;

[0080] The workpiece that has completed the second heating is transported to the third heating zone 4 for the third heating;

[0081] The workpiece that has completed the third heating is transported to the fourth heating zone 5 for the fourth heating;

[0082] The workpiece that has completed the fourth heating is transported to the discharging area 6 for discharging the workpiece.

[0083] According to the above-mentioned processing process, technical personnel in this field can adjust the vacuum degree in the feeding area 1, the first heating area 2, the second heating area 3, the third heating area 4, the fourth heating area 5 and the discharging area 6 to a preset value through the first vacuum pipe 7, the second vacuum pipe 9 and the third vacuum pipe 11 before processing the workpiece.

[0084] After the vacuum degree in the feeding zone 1, the first heating zone 2, the second heating zone 3, the third heating zone 4, the fourth heating zone 5 and the discharging zone 6 is adjusted to a preset value, the workpiece is sequentially passed through the first heating zone 2, the second heating zone 3, the third heating zone 4, the fourth heating zone 5 for the first heating, the second heating, the third heating and the fourth heating, so that the workpiece can be heated multiple times under the environment of the preset vacuum value. More preferably, the vacuum degree in the first heating zone 2, the second heating zone 3, the third heating zone 4 and the fourth heating zone 5 is in the range of 0.01Pa-1000Pa.

[0085] In one embodiment, preferably, a first furnace door 18 is provided between the feeding zone and the first heating zone, and a second furnace door 19 is provided between the discharging zone and the fourth heating zone. During the first heating, second heating, third heating and fourth heating of the workpiece, the first furnace door 18 and the second furnace door 19 remain closed.

[0086] That is, the vacuum degree in the first heating zone 2, the second heating zone 3, the third heating zone 4 and the fourth heating zone 5 can be maintained through the first furnace door 18 and the second furnace door 19, thereby significantly improving the processing effect of the workpiece during the first heating, second heating, third heating and fourth heating processes.

[0087] This specification also provides an inert gas atmosphere heating method, which is characterized by using the above-mentioned hot forming production line for processing, including the following steps:

[0088] The inert gas content in the feed zone 1, the first heating zone 2, the second heating zone 3, the third heating zone 4, the fourth heating zone 5 and the discharge zone 6 is adjusted to a preset value through a plurality of first gas pipelines 13, second gas pipelines 14 and third gas pipelines 15;

[0089] providing a workpiece for processing;

[0090] Transporting the workpiece to the feeding area 1 for feeding the workpiece;

[0091] The workpieces in the feeding zone 1 are transported to the first heating zone 2 for the first heating;

[0092] The workpiece that has completed the first heating is transported to the second heating zone 3 for the second heating;

[0093] The workpiece that has completed the second heating is transported to the third heating zone 4 for the third heating;

[0094] The workpiece that has completed the third heating is transported to the fourth heating zone 5 for the fourth heating;

[0095] The workpiece that has completed the fourth heating is transported to the discharging area 5 for discharging the workpiece.

[0096] In this embodiment, before the workpiece is processed, an inert gas can be blown into the feed zone 1, the first heating zone 2, the second heating zone 3, the third heating zone 4, the fourth heating zone 5 and the discharge zone 6 through a plurality of first gas pipelines 13, the second gas pipelines 14 and the third gas pipelines 15, so as to adjust the inert gas content of the first heating zone 2, the second heating zone 3, the third heating zone 4 and the fourth heating zone 5 to a preset value. Preferably, in this embodiment, the inert gas can be set to nitrogen, and the nitrogen content range ρ>99.99%.

[0097] Preferably, a first furnace door 18 is provided between the feeding zone 1 and the first heating zone 2, and a second furnace door 19 is provided between the discharging zone 6 and the fourth heating zone 5. During the first heating, second heating, third heating and fourth heating of the workpiece, the first furnace door 18 and the second furnace door 19 remain closed.

[0098] That is, the inert gas atmosphere in the first heating zone 2, the second heating zone 3, the third heating zone 4 and the fourth heating zone 5 can be maintained through the first furnace door 18 and the second furnace door 19, thereby significantly improving the processing effect of the workpiece during the first heating, second heating, third heating and fourth heating processes.

[0099] In one embodiment, the heating equipment in the heating zone can be set as a corresponding heating furnace. In order to increase the thermal efficiency of the heating furnace, heat insulation cotton is arranged around the furnace, and cooling water channels are arranged on the inner side of the furnace wall. The heating method is designed as a non-partitioned heating method for each layer of through-cavity, so that the thermal efficiency per unit area can be higher, the maximum operating temperature can reach 1250°C, the heating of the sheet is more reliable, and the furnace temperature uniformity is better. Furthermore, a layout of three layers and four heating zones can be adopted, and 12 sheets of sheet can be heated at the same time. Multi-layer and multi-heat zone can achieve high-beat production, and the annual output can reach 1 million strokes, making the production efficiency of the thermoforming production line higher.

[0100] According to the contents of the above three embodiments, in this embodiment, the heating furnace can be used as a vacuum furnace or as an atmosphere furnace.

[0101] Specifically, the vacuum furnace production process can be used for bare plate production. The application of vacuum heating technology can avoid the wear and tear of the roughening die after the oxide scale is produced during the hot forming of bare plates of automotive hot stamping parts, thereby improving the life of the die.

[0102] When producing coated plates, it can be switched to be used as an atmosphere furnace, which has good process performance when producing coated plates. That is, the equipment can meet the needs of different production processes at the same time, improve the diversity of production materials, and significantly reduce the cost of the factory's investment in hot pressing production line equipment.

[0103] In the above-mentioned embodiment, the thermoforming production line can not only perform processing in a vacuum environment, but also perform processing in an inert gas environment. Figure 4 When the hot forming production line is heated in a vacuum environment, the first gas pipeline 13, the second gas pipeline 14 and the third gas pipeline can be closed by setting valves, and at this time, the multiple heating zones are only connected to the first vacuum pipeline 7, so that the vacuum environment in the multiple heating zones can be kept stable.

[0104] When the thermoforming production line is processing in an inert gas environment, the first vacuum pipe 7, the second vacuum pipe 9 and the third vacuum pipe 11 are closed by valves, and the multiple smoke exhaust ports 16 in the multiple heating zones are kept open. The above-mentioned arrangement enables the first gas pipe 13, the second gas pipe 14 and the third gas pipe 15 to be connected to the multiple heating zones, the feeding zone and the discharging zone respectively, and the multiple smoke exhaust ports 16 to be connected to the multiple heating zones.

[0105] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described in the industry standards or embodiments, etc. Some industry standards or slightly modified implementation plans based on the implementation of the custom methods or embodiments can also achieve the same, equivalent or similar, or predictable implementation effects after deformation of the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after these modifications or deformations can still fall within the scope of the optional implementation plans of this application.

[0106] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A thermoforming production line, characterized in that: include: A plurality of adjacent and connected heating zones, wherein the plurality of heating zones constitute a heating portion; A feeding area and a discharging area connected to both ends of the heating part; The heating part is connected with a first vacuum pipeline, which is connected with a first vacuum unit and is used to perform vacuum treatment on multiple heating areas in the heating part; the feeding area is connected with a second vacuum pipeline, which is connected with a second vacuum unit; the discharging area is connected with a third vacuum pipeline, which is connected with a third vacuum unit and is used to perform vacuum treatment on the feeding area and the discharging area; Furthermore, a plurality of first gas pipelines are laid at the bottom of the heating portion, and the plurality of first gas pipelines are connected to the plurality of heating zones for filling the plurality of heating zones with inert gas. A second gas pipeline is laid on the side wall of the feed zone, and a third gas pipeline is laid on the side wall of the discharge zone for filling the feed zone and the discharge zone with inert gas.

2. The thermoforming production line according to claim 1, characterized in that: A plurality of the heating zones are each provided with a smoke exhaust port and a detection component.

3. The thermoforming production line according to claim 2, characterized in that: The detection assembly includes a vacuum gauge, a differential pressure transmitter and an oxygen content analyzer.

4. The thermoforming production line according to claim 1, characterized in that: The second gas pipeline and the third gas pipeline are both connected to the first gas pipeline.

5. The thermoforming production line according to claim 1, characterized in that: One end of the feeding zone away from the heating zone is connected to a feeding truss, and one end of the discharging zone away from the heating zone is connected to a discharging truss.

6. The thermoforming production line according to claim 1, characterized in that: A first furnace door is provided between the feeding area and the heating part, and a second furnace door is provided between the discharging area and the heating part.

7. A vacuum hot pressing method, characterized in that The processing is carried out using the thermoforming production line described in any one of claims 1 to 6, comprising the following steps: Adjusting the vacuum degree in the feeding zone, the first heating zone, the second heating zone, the third heating zone, the fourth heating zone and the discharging zone to a preset value through the first vacuum pipeline, the second vacuum pipeline and the third vacuum pipeline; providing a workpiece for processing; Transporting the workpiece to the feeding area to feed the workpiece; transporting the workpiece in the feeding zone to a first heating zone for first heating; transporting the workpiece that has completed the first heating to the second heating zone for a second heating; transporting the workpiece that has completed the second heating to a third heating zone for a third heating; transporting the workpiece that has completed the third heating to the fourth heating zone for the fourth heating; The workpiece that has completed the fourth heating is transported to a discharging area for discharging the workpiece.

8. The vacuum hot pressing method according to claim 7, characterized in that: A first furnace door is provided between the feeding area and the heating part, and a second furnace door is provided between the discharging area and the heating part. During the first heating, the second heating, the third heating and the fourth heating of the workpiece, the first furnace door and the second furnace door remain closed.

9. The vacuum hot pressing method according to claim 1, characterized in that: The vacuum degree in the first heating zone, the second heating zone, the third heating zone and the fourth heating zone ranges from 0.01 Pa to 1000 Pa.

10. An inert gas atmosphere heating method, characterized in that The processing is carried out using the thermoforming production line described in any one of claims 1 to 6, comprising the following steps: The inert gas content in the feed zone, the first heating zone, the second heating zone, the third heating zone, the fourth heating zone and the discharge zone is adjusted to a preset value through a plurality of first gas pipelines, second gas pipelines and third gas pipelines; providing a workpiece for processing; Transporting the workpiece to the feeding area to feed the workpiece; transporting the workpiece in the feeding zone to a first heating zone for first heating; transporting the workpiece that has completed the first heating to the second heating zone for a second heating; transporting the workpiece that has completed the second heating to a third heating zone for a third heating; transporting the workpiece that has completed the third heating to the fourth heating zone for the fourth heating; The workpiece that has completed the fourth heating is transported to a discharging area for discharging the workpiece.

11. The inert gas atmosphere heating method according to claim 10, characterized in that: The inert gas is nitrogen, and the nitrogen content range is ρ>99.99%.

12. The inert gas atmosphere heating method according to claim 10, characterized in that: A first furnace door is provided between the feeding area and the heating part, and a second furnace door is provided between the discharging area and the heating part. During the first heating, the second heating, the third heating and the fourth heating of the workpiece, the first furnace door and the second furnace door remain closed.

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