Temperature-resistant and pressure-resistant isostatic press

Abstract

The invention discloses a temperature-resistant and pressure-resistant isostatic pressing machine, and belongs to the technical field of isostatic pressing machines, the temperature-resistant and pressure-resistant isostatic pressing machine comprises a rack, two sides of the rack are respectively provided with a feeding frame and a discharging frame, the feeding frame and the discharging frame are provided with a charging barrel in a sliding manner, the rack is provided with a fixed frame, and the bottom of the fixed frame is provided with a bottom plate; the treatment chamber is vacuumized through the vacuum pump and the air pump, so that oxygen interference is effectively eliminated, a battery cell material is prevented from being oxidized at high temperature, the temperature of the treatment chamber is controlled through the design of the heating plate and the cooling coil, and the system monitors the temperature and air pressure in the treatment chamber in real time; the opening degree and the cooling strength of the pressure release valve can be dynamically adjusted, and it is guaranteed that the temperature and the air pressure are stable and synchronously decreased in the temperature and pressure reducing stage; and meanwhile, the feeding frame, the discharging frame and the movable treatment chamber facilitate continuous operation, the feeding and discharging speed is increased, and the battery cell preparation efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of isostatic press technology, and more particularly to an isostatic press that is resistant to temperature and pressure. Background Technology

[0002] Isostatic pressing is a process that applies uniform pressure to materials under high temperature and high pressure using a fluid medium. It is widely used in powder metallurgy, ceramic preparation, and battery cell manufacturing. In the battery cell manufacturing process, isostatic presses are used to densify the battery cell material. By applying high temperature and high pressure conditions, it promotes the plasticity and creep of the solid electrolyte, reduces interfacial porosity, and improves the performance and consistency of the battery cell.

[0003] However, during the cooling and depressurization stage of cell manufacturing, due to the close physical coupling between temperature and gas pressure, improper control can easily lead to excessively rapid expansion or contraction of the gas inside the cell, generating tensile stress and causing damage to the cell structure.

[0004] Therefore, we propose an isostatic press that is resistant to temperature and pressure. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a temperature and pressure resistant isostatic press, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a temperature- and pressure-resistant isostatic press, comprising a frame, a feeding rack and a discharging rack respectively installed on both sides of the frame, a material cylinder slidably mounted on the feeding rack and the discharging rack, a fixed frame provided on the frame, a base plate provided at the bottom of the fixed frame, a fixed box installed at the rear of the fixed frame, a first electric telescopic mechanism installed on the top of the fixed box, a movable plate connected to the end of the first electric telescopic mechanism, a support frame installed on the movable plate, a processing chamber fixedly connected through the support frame, a movable block slidably mounted on the top of the fixed frame, a connecting rod connected to the bottom of the movable block, and a plug installed at the bottom of the connecting rod, further comprising: a vacuum pump, an air pump and a temperature circulation controller installed inside the fixed box, a second connecting pipe connected to the temperature circulation controller; an inner cavity and a processing chamber provided inside the processing chamber, a heating plate and a cooling coil installed around the processing chamber in the inner cavity, the cooling coil being connected to the temperature circulation controller through the second connecting pipe.

[0007] In a preferred embodiment, the present invention may be further configured such that: a sealing ring is fitted around the outside of the plug, a plurality of air inlets are provided at the end of the plug, and a first pressure relief valve is provided on the plug.

[0008] In a preferred embodiment, the present invention can be further configured such that: the fixed box has connectors on both sides, the connectors are connected to the plug through a first connecting pipe, the first connecting pipe includes a first connecting pipe one and a first connecting pipe two, the vacuum pump is connected to the air inlet through the first connecting pipe one, and the air pump is connected to the air inlet through the first connecting pipe two.

[0009] In a preferred embodiment, the present invention may be further configured such that the temperature circulation controller includes a water pump and a coolant tank, the water pump being connected to the cooling coil piping.

[0010] In a preferred embodiment, the present invention can be further configured as follows: a second slide rail is installed on the top of the fixed frame, a sliding seat is provided on the bottom of the movable block corresponding to the second slide rail, a second electric telescopic mechanism is installed inside the fixed frame, the end of the second electric telescopic mechanism is fixedly connected to the movable block, two first slide rails are installed on the base plate, and pulleys are installed on the movable plate corresponding to the two first slide rails.

[0011] In a preferred embodiment, the present invention can be further configured such that: a first drive motor and a first transmission chain are installed on the feeding rack, a second drive motor and a second transmission chain are installed on the discharging rack, and a plurality of transmission wheels are rotatably installed on both sides of the feeding rack and the discharging rack.

[0012] In a preferred embodiment, the present invention may be further configured such that a control box is mounted on the fixed frame, and the control box is electrically connected to the first electric telescopic machine, the vacuum pump, the air pump, and the temperature cycle control electromechanical device.

[0013] In a preferred embodiment, the present invention may be further configured such that a temperature sensor and a pressure sensor are provided in the processing chamber, and the temperature sensor and the pressure sensor are electrically connected to the control box.

[0014] In a preferred embodiment, the present invention can be further configured such that: the processing chamber is divided into multiple sections, each section is equipped with an independent temperature sensor and a pressure sensor, the cooling coil is connected to a cooling pipe corresponding to each section, and the cooling pipe is equipped with an electric regulating valve.

[0015] The beneficial effects of this invention are: This invention effectively eliminates oxygen interference by using a vacuum pump and an air pump to evacuate the processing chamber, preventing the cell material from oxidizing at high temperatures. The temperature of the processing chamber is controlled by the design of the heating plate and cooling coil. The system monitors the temperature and air pressure inside the processing chamber in real time and can dynamically adjust the opening of the pressure relief valve and the cooling intensity to ensure a stable and synchronous decrease in temperature and air pressure during the cooling and depressurization phase. Meanwhile, the feeding rack, discharging rack, and movable processing chamber facilitate continuous operation, improve the loading and unloading speed, and further enhance the efficiency of cell manufacturing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall main structure of the present invention; Figure 2 This is a schematic diagram of the overall working structure of the present invention; Figure 3 This is a schematic diagram of the overall rear view structure of the present invention; Figure 4 This is a schematic diagram of the main structure of the processing warehouse of the present invention; Figure 5 This is a bottom view of the processing chamber structure of the present invention; Figure 6 This is a schematic diagram of the plug structure of the present invention; Figure 7 This is a schematic diagram of the second connecting pipe structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixed box of the present invention; Figure 9 This is a schematic diagram of the internal structure of the processing chamber of the present invention; Figure 10 This is a schematic diagram of the cooling pipe structure of the present invention; Figure 11 This is a schematic diagram of the control flow structure of the present invention; Figure 12 This is a schematic diagram of the feed rack structure of the present invention; Figure 13 This is a schematic diagram of the cooling coil piping structure according to Embodiment 2 of the present invention; Figure 14 This is a schematic diagram of the control system structure according to Embodiment 2 of the present invention.

[0017] In the diagram: 1. Frame; 2. Feed rack; 3. Material cylinder; 4. First drive motor; 5. Movable plate; 6. Processing bin; 7. Discharge rack; 8. Second drive motor; 9. First transmission chain; 10. Fixed frame; 11. Movable block; 12. Connecting rod; 13. Plug; 14. Connecting plate; 15. Fixed box; 16. Connector; 17. First connecting pipe; 171. First connecting pipe one; 172. First connecting pipe two; 18. Second connecting pipe; 19. First electric telescopic mechanism; 20. Control box; 21. First sliding mechanism. 21. Rail; 22. Support frame; 23. Pulley; 24. Sealing ring; 25. Air inlet; 26. Temperature circulation controller; 27. Processing chamber; 28. Inner cavity; 29. ​​Heating plate; 30. Cooling coil; 31. Drive wheel; 32. Base plate; 33. Vacuum pump; 34. Air pump; 35. Second slide rail; 36. Electric regulating valve; 361. First electric regulating valve; 362. Second electric regulating valve; 363. Third electric regulating valve; 37. Cooling pipe; 38. Three-way valve; 39. Solenoid valve; 40. Return pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figures 1-12 A temperature- and pressure-resistant isostatic press includes a frame 1 and a fixed frame 10. A feed rack 2 and a discharge rack 7 are threadedly installed on both sides of the frame 1, and a material cylinder 3 is slidably arranged on the feed rack 2 and the discharge rack 7. A base plate 32 is provided at the bottom of the fixed frame 10, and two first slide rails 21 are threadedly installed on the base plate 32. A fixed box 15 is installed at the rear of the fixed frame 10, and a first electric telescopic mechanism 19 is threadedly installed on the top of the fixed box 15. A movable plate 5 is threadedly installed at the end of the first electric telescopic mechanism 19. A pulley 23 is threadedly installed on the movable plate 5 corresponding to the two first slide rails 21. A support frame 22 is provided on the movable plate 5, and a processing chamber 6 is welded through the support frame 22. A movable block 11 is slidably arranged on the top of the fixed frame 10, and a connecting rod 12 is welded to the bottom of the movable block 11. A plug 13 is threadedly installed at the bottom of the connecting rod 12.

[0020] The plug 13 is fitted with a sealing ring 24, and the end of the plug 13 is provided with several air inlets 25. The end of the plug 13 is also provided with a first pressure relief valve.

[0021] The interior of the fixed box 15 is hollow. A temperature circulation controller 26, a vacuum pump 33, and an air pump 34 are threadedly installed inside the fixed box 15. Connectors 16 are welded to both sides of the fixed box 15. First connecting pipes 17 are connected to the connectors 16 respectively. The first connecting pipes 17 include a first connecting pipe 171 and a first connecting pipe 172. A second connecting pipe 18 is connected to the temperature circulation controller 26. The other end of the second connecting pipe 18 is connected to the processing chamber 6. The vacuum pump 33 is connected to the first connecting pipe 171 through the connector 16. One end of the air pump 34 is connected to the inert gas container (not shown in the figure) and the other end is connected to the first connecting pipe 172. The first connecting pipe 171 and the first connecting pipe 172 are both connected to the air inlet 25 on the plug 13.

[0022] Furthermore, the inert gas is argon, and the container is equipped with a pressurization system.

[0023] The processing chamber 6 has an inner cavity 28 and a processing chamber 27. The processing chamber 27 is cylindrical. Several heating plates 29 are threaded around the processing chamber 27 in the inner cavity 28. A cooling coil 30 is also wrapped around the outside of the processing chamber 27. The cooling coil 30 is connected to the second connecting pipe 18.

[0024] The diameters of the plug 13 and the material cylinder 3 are matched with the diameter of the processing chamber 27, and a sealing ring is fitted at the end of the processing chamber 27.

[0025] Furthermore, the temperature circulation control unit 26 includes a water pump and a coolant tank connected to the water pump. The water pump drives the coolant to circulate within the cooling coil 30 to achieve cooling.

[0026] Several transmission wheels 31 are symmetrically installed on both the feeding rack 2 and the discharging rack 7. The transmission wheels 31 are used to assist the movement of the material cylinder 3. Two transmission rods are installed inside the feeding rack 2 through a coupling. A first transmission chain 9 is sleeved between the two transmission rods. Furthermore, the first transmission chain 9 is located at the bottom of the feeding rack 2. A first drive motor 4 is threadedly installed on the feeding rack 2. The output shaft of the first drive motor 4 is connected to one of the transmission rods through a coupling. The first transmission chain 9 abuts against the bottom of the material cylinder 3, thereby driving the material cylinder 3 to move. A second drive motor 8 is threadedly installed on one side of the discharging rack 7. A second transmission chain is set inside the discharging rack 7. The second drive motor 8 drives the second transmission chain to work, which is used to drive the material cylinder 3 on the discharging rack 7 to move.

[0027] Furthermore, the drive wheels 31 are all arranged in contact with the material cylinder 3 to assist the material cylinder 3 in moving on the feed rack 2 and the discharge rack 3.

[0028] A symmetrical connecting plate 14 is threaded onto the fixed frame 10, and a control box 20 is threaded onto the connecting plate 14. A second slide rail 35 is threaded onto the top of the fixed frame 10, and a sliding seat is provided at the bottom of the movable block 11 corresponding to the second slide rail 35. A second electric telescopic mechanism for driving the movable block 11 to move is provided inside the fixed frame 10.

[0029] Working principle: When using this device, the battery cell to be prepared is placed on the material cylinder 3, and the material cylinder 3 enters the processing chamber 27 of the processing chamber 6. The first electric telescopic machine 19 drives the movable plate 5 to slide on the first slide rail 21, moving the processing chamber 6 installed on the top of the movable plate 5 to the middle of the fixed frame 10, so that the processing chamber 27 is aligned with the plug 13. The second electric telescopic control block 11 slides on the second slide rail 35, driving the connecting rod 12 to move the plug 13 toward the processing chamber 6. It enters the processing chamber 27 through the plug 13, thus sealing the processing chamber 27. At the same time, the vacuum pump 33 performs vacuuming on the processing chamber 27 and performs gas washing. The gas pump 34 delivers a small amount of argon gas into the processing chamber 27. The vacuum pump 33 repeatedly performs vacuuming, so that the processing chamber 27 is in a high vacuum environment. During the cell processing, the air pump 34 fills the processing chamber 27 with argon gas. The pressurization system controls the gas pressure in the processing chamber 27 to increase to the target gas pressure value required for cell preparation. At the same time, the heating plate 29 set on the outer surface of the processing chamber 27 heats the cell to increase the temperature to the target temperature value required for cell preparation. The gas pressure is evenly transmitted to the entire surface of the cell. At the same time, the plasticity and creep ability of solid electrolyte and other materials are enhanced at high temperature. Under high pressure, the pores between the layers of materials are compressed, the particles are displaced and deformed, and the interfaces are in close contact, thus completing the cell preparation. After heat preservation and pressure holding, the temperature and air pressure are controlled to decrease through coordinated pressure relief. The first pressure relief valve is opened and the temperature circulation control machine 26 is engaged to allow the battery cell to smoothly transition from a plastic state under high temperature and high pressure to a stable state under room temperature and normal pressure. At this time, the second electric telescopic machine controls the plug 13 to reset, and the first electric telescopic machine 19 drives the movable plate 5 and the processing chamber 6 to reset. The subsequent material cylinder 3 is controlled to enter the processing chamber 27 through the feeding rack 2, and the completed material cylinder 3 is pushed out and conveyed to the discharge rack 7. The completed material cylinder 3 is then conveyed through the discharge rack 7.

[0030] During the process of preparing the battery cell using an isostatic press, the monitoring of temperature and air pressure in the processing chamber 27 is extremely important, as temperature and air pressure affect the preparation of the battery cell. Temperature sensors and air pressure sensors are installed inside the processing chamber 27, with the air pressure sensor reading being a and the temperature sensor reading being b.

[0031] After the material cylinder 3 enters the processing chamber 27, the temperature and air pressure are continuously monitored, and the internal situation is analyzed through the control box 20.

[0032] When the plug 13 is inserted into the processing chamber 27, the vacuum pump 33 is started to evacuate the processing chamber 27 to create a vacuum environment. At this time, the reading a continues to drop to a high vacuum environment. During the evacuation process, a continues to drop until a is maintained at a high vacuum state.

[0033] If 'a' fluctuates at this point, the system identifies it as abnormal and shuts down the vacuum pump 33. The status of 'a' is then further monitored. If 'a' continues to rise and approach atmospheric pressure, it indicates a problem with the seal inside the processing chamber 27. At this point, the plug 13 is inspected. A flow rate sensor is installed on the outside of the plug 13 to monitor whether there is any leakage at the plugs 13 on both sides. If the flow rate sensor has a reading, the seal at the plug 13 has failed. If there is no reading, the seal problem is ruled out.

[0034] After the heat preservation and pressure preservation are completed, the temperature and air pressure in the processing chamber 27 need to be reduced to room temperature and normal pressure. At this time, the changes in air pressure and temperature have a significant impact on the battery cell. During the cooling and depressurization process, air pressure and temperature are positively correlated and closely coupled, that is, the air pressure can be reduced at the same time as the temperature decreases.

[0035] Before the depressurization process is prepared, the operation of the heating plate 29 is stopped, and the first depressurization valve is kept closed to ensure that the processing chamber 27 remains sealed. The temperature of the processing chamber 27 decreases slowly when no heating unit is involved. At this time, since the amount of argon in the processing chamber 27 remains unchanged, the gas pressure decreases slowly as the temperature decreases. At this time, a decreases slowly, and b decreases slowly as well.

[0036] After a period of time, in order to improve the cooling and depressurization efficiency, the system actively intervenes and opens the first pressure relief valve, allowing part of the argon gas to be discharged through the first pressure relief valve. At the same time, the temperature circulation controller 26 intervenes and the coolant drives the processing chamber 27 to perform cooling treatment through the cooling coil 30. At this time, the change of 'a' is affected by both the amount of argon gas discharged from the first pressure relief valve and the temperature change.

[0037] Set the theoretical air pressure reading corresponding to the current temperature as a0. When b decreases, a≈a0, that is, when the change in theoretical air pressure is consistent with the change in actual air pressure, that is, when the rate of temperature decrease is matched with the rate of air pressure decrease, the temperature and air pressure decrease synchronously, keeping the first pressure relief valve working normally.

[0038] If a < a0, the rate of pressure drop is faster than the rate of temperature drop, meaning the overall depressurization rate of the device is higher than the theoretical depressurization rate. If this state is maintained, the high-pressure gas in the pores inside the battery cell will expand rapidly, generating huge tensile stress, which will further damage the battery cell.

[0039] At this point, the system intervenes. First, it reduces the opening of the first pressure relief valve to slow down the pressure relief rate. The air pressure reading is then further observed. The cooling coil 30 causes the temperature b to drop, which in turn causes a to drop. If, after a certain period of time, the reading at a is still less than a0, the pressure relief rate is too fast, and the rate of temperature drop cannot keep up with the rate of pressure relief, which may easily lead to damage to the battery cell. The first pressure relief valve is then closed to completely stop the pressure relief. The air pressure is then controlled to drop only by temperature control to reduce the actual rate of air pressure drop, so that the air pressure rises back to a level close to a0.

[0040] Furthermore, if the argon gas is discharged too quickly, resulting in a decrease in the absolute amount of gas in the processing chamber 27, and the gas pressure cannot be controlled to rise back to the gas pressure reading a0 corresponding to the current temperature by temperature control alone, the gas pump 34 is controlled to supplement the processing chamber 27 with argon gas until the gas pressure rises back to near a0 corresponding to that temperature.

[0041] If a > a0, the depressurization rate is slower than the target requirement. Maintaining this state for a long time can easily lead to a longer cooling and depressurization cycle, affecting production efficiency. At this time, the system controls the opening of the first depressurization valve to increase the depressurization rate, so that the air pressure can drop synchronously with the air temperature.

[0042] Since air pressure and temperature are naturally coupled through physical laws, the system corrects this natural coupling by actively controlling the first pressure relief valve and the cooling system.

[0043] Based on this, if the system needs to continuously and significantly increase the opening to maintain normal pressure changes when a0 < a, it may mean that the first pressure relief valve is partially blocked or the selected size is too small, and it needs to be stopped for inspection and maintenance.

[0044] When a0 > a, the pressure is released too quickly. Immediately, a command is sent to the first pressure relief valve to reduce the opening or even completely close the first pressure relief valve. The pressure release rate slows down or stops. Since the temperature is still dropping, the air pressure will naturally decrease, and the actual air pressure drop rate will slow down, thus gradually rising back to the target air pressure value range. If the air pressure continues to drop rapidly after closing the first pressure relief valve, it indicates that there is a leakage problem in the system during operation. After the production of the battery cells in the material cylinder 3 is completed, since the sealing of the plug 13 has been tested, the air inlet end is checked at this time to see if there is any leakage.

[0045] Example 2 Based on Example 1, due to the difference in the number of battery cells in the processing chamber 27, there are slight differences in the temperature of each area. In order to further ensure the quality and efficiency of battery cell production and improve the monitoring of the temperature in the processing chamber 27, the system virtually divides the processing chamber 27 into three sections, namely the first section, the second section, and the third section. Temperature sensors are arranged in a ring inside each section, and a second pressure relief valve and a corresponding air pressure sensor are installed at the top of each section. The second pressure relief valve is connected to the external collection device pipeline.

[0046] The temperature and pressure of each zone are monitored in real time by temperature and pressure sensors in each zone. At the same time, the first pressure relief valve is working normally, and the second pressure relief valve is only opened and closed when the zone is adjusted.

[0047] refer to Figures 13-14 To better regulate the temperature of each zone, the cooling coil 30 is improved. A solenoid valve 39 is installed between the cooling coil 30 and the temperature circulation controller 26, and a return pipe 40 is connected to the cooling coil 30. The solenoid valve 39 is used to control whether there is a connection with the temperature circulation controller 26. Three three-way valves 38 are installed on the cooling coil 30 for each of the three zones. A cooling pipe 37 is installed on each three-way valve 38. The cooling pipe 37 is set for each zone and abuts against the outer wall of the processing chamber 27 of each zone. The other end of the cooling pipe 37 is connected to the return pipe 40.

[0048] Furthermore, an electric regulating valve 36 is installed in the pipeline between each three-way valve 38 and the cooling pipe 37 corresponding to each section. The first section is equipped with a first electric regulating valve 361, the second section is equipped with a second electric regulating valve 362, and the third section is equipped with a third electric regulating valve 363.

[0049] The PLC control program is set in the control box 20 to control the opening of the electric regulating valve 36, so as to achieve the purpose of separate control of the temperature of each zone.

[0050] By monitoring the temperature of each zone in real time, and setting the zone temperature as c, the normal range of c is b-2 < c < b+2. If the temperature of the first zone is higher than that of the second and third zones, and the temperature of the first zone exceeds the overall temperature threshold b in the processing chamber 27, the system controls the cooling pipe 37 corresponding to the first zone to further intervene in the operation. By increasing the opening of the first electric regulating valve 361, the amount of coolant entering the cooling pipe 37 is increased to perform rapid cooling.

[0051] The system monitors the gas pressure in each zone in real time. If the gas pressure (P) in the second zone is too high, the system will finely adjust and open the second pressure relief valve of the second zone to release a small amount of argon gas, so that the gas pressure in that zone drops to the set value. At the same time, since the gas is fluid, the pressure relief of a single zone will affect the overall gas pressure. Therefore, after releasing a small amount of argon gas, the system continuously monitors the gas pressure in the device.

[0052] Meanwhile, since temperature variable control is only affected by the temperature cycle controller 26 and the heating plate 29, the system primarily aims at temperature control. If a certain area experiences a significant temperature drop due to the need for enhanced cooling, it may cause gas contraction in that area, resulting in localized pressure fluctuations. In this case, the system stabilizes the pressure by fine-tuning the pressure relief valve. For example, when excessive cooling causes a drop in pressure, the first pressure relief valve will be temporarily closed to maintain pressure stability.

[0053] Furthermore, if the temperature of the first and third zones at both ends of the processing chamber 27 exceeds the zone threshold, the system will issue an alarm and the system will control the temperature cycle controller 26 to intervene.

[0054] The temperature sensor readings in the first and third zones are consistently higher than the set target value. The reading in the second zone is normal. The initial readings of the air pressure sensors in the three zones may be slightly higher than the set air pressure due to the increase in temperature. The system controls the opening of the first electric regulating valve 361 corresponding to the first zone to increase, and at the same time controls the opening of the third electric regulating valve 363 corresponding to the third zone to increase.

[0055] Furthermore, for the second temperature range, the opening of the second electric regulating valve 362 remains unchanged or is slightly reduced to prevent the temperature in the second range from decreasing further.

[0056] As the opening degrees of the first electric regulating valve 361 and the third electric regulating valve 363 increase, the cooling pipe 37 begins to absorb a large amount of heat from the first and third zones. The gas temperature in these two zones drops rapidly. At this time, due to the temperature drop at both ends, the gas pressure in the processing chamber 27 also drops. Since the argon gas is interconnected within the processing chamber 27, the local pressure drop will be rapidly conducted to the entire container. Therefore, the pressure sensors in the three zones will detect the overall pressure drop almost simultaneously.

[0057] At this time, the air pressure in the processing chamber 27 is monitored. If the air pressure reading is lower than the reading of a, air pressure compensation is performed by adjusting the opening of the first pressure relief valve to control the rate of air pressure drop. If the air pressure reading drops too quickly, argon gas is injected into the processing chamber 27 by the air pump 34 to offset the air pressure loss caused by cooling and contraction.

[0058] Under the strong cooling effect, the readings of the first and third intervals gradually return to normal. At this time, the system will gradually control the opening of the first electric regulating valve 361 and the third electric regulating valve 363 from the maximum value back to the normal maintenance opening, so as to control the cooling pipe 37 to return to normal and avoid overcooling from affecting the normal working process.

[0059] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0060] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A warm and pressure resistant isostatic press, characterized by, The utility model relates to a kind of processing device for plastic injection molding, including rack (1), the rack (1) two sides are equipped with feeding frame (2) and discharge frame (7) respectively, feeding frame (2) and discharge frame (7) are slidably provided with barrel (3), fixed frame (10) is provided on the rack (1), the bottom of fixed frame (10) is equipped with bottom plate (32), fixed box (15) is installed on the rear portion of fixed frame (10), first electric telescopic machine (19) is installed on the top of fixed box (15), the end of first electric telescopic machine (19) is connected with movable plate (5), support frame (22) is installed on movable plate (5), processing bin (6) is fixedly connected by support frame (22), movable block (11) is slidably provided on the top of fixed frame (10), the bottom of movable block (11) is connected with connecting rod (12), plug (13) is installed on the bottom of connecting rod (12), further include: Vacuum pump (33), air pump (34) and temperature cycle control machine (26) are installed in the fixed box (15), second connecting pipe (18) is connected with temperature cycle control machine (26) on pipeline; Inner cavity (28) and processing chamber (27) are provided in the processing bin (6), heating plate (29) and cooling coil (30) are installed around processing chamber (27) in inner cavity (28), cooling coil (30) is connected between temperature cycle control machine (26) by second connecting pipe (18).

2. The warm and pressure-resistant isostatic press according to claim 1, characterized in that Sealing ring (24) is provided on the outside of plug (13), a plurality of air inlet holes (25) are formed in the end of plug (13), first pressure relief valve is provided on plug (13).

3. The isostatic press of claim 2, wherein, Connecting head (16) is provided on the two sides of fixed box (15), connecting head (16) is connected with plug (13) by first connecting pipe (17), first connecting pipe (17) includes first connecting pipe one (171) and first connecting pipe two (172), vacuum pump (33) is communicated with air inlet hole (25) by first connecting pipe one (171), air pump (34) is communicated with air inlet hole (25) by first connecting pipe two (172).

4. The isostatic press of claim 1, wherein, Temperature cycle control machine (26) includes water pump and cooling liquid tank, water pump is connected with cooling coil (30) on pipeline.

5. The isostatic press of claim 1, wherein, Second sliding rail (35) is installed on the top of fixed frame (10), sliding seat is provided on the bottom of movable block (11) corresponding second sliding rail (35), second electric telescopic machine is installed in fixed frame (10), and the end of second electric telescopic machine is fixedly connected with movable block (11), bottom plate (32) is installed with two first sliding rails (21), pulley (23) is installed on movable plate (5) corresponding two first sliding rails (21).

6. The isostatic press of claim 1, wherein, The first driving motor (4) and the first transmission chain (9) are installed on the feeding frame (2), the second driving motor (8) and the second transmission chain are installed on the discharging frame (7), and a plurality of transmission wheels (31) are rotatably installed on the two sides of the feeding frame (2) and the discharging frame (7).

7. The isostatic press of claim 1, wherein, The control box (20) is installed on the fixed frame (10), and the control box (20) is electrically connected with the first electric telescopic machine (19), the vacuum pump (33), the air pump (34) and the temperature circulation control machine (26).

8. The isostatic press of claim 7, wherein, The temperature sensor and the air pressure sensor are arranged in the processing chamber (27), and the temperature sensor and the air pressure sensor are electrically connected with the control box (20).

9. The isostatic press of claim 7, wherein, The processing chamber (27) is divided into multiple intervals, each interval is provided with an independent temperature sensor and an air pressure sensor, the cooling pipe (37) is connected with the cooling coil (30) corresponding to each interval, and the electric regulating valve (36) is arranged on the cooling pipe (37).

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