Package substrate pressing system

Abstract

The invention discloses a packaging substrate pressing system which comprises a heat exchange group, a cold exchange group, a first valve, a second valve, a controller and at least one pressing unit. The heat exchange group includes a first tank; the cold exchange group comprises a third tank; the press unit comprises a press and a third pump; an inlet of the first valve is communicated to a heated medium outlet of the heat exchange group at an outlet of the first tank; an outlet of the third pump is connected with an inlet of the press; an inlet of the second valve is connected with an outlet of the press, a first outlet is connected with a first inlet of the first tank, and a second outlet is connected with an inlet of the third tank; the controller is used for controlling opening and closing of the first outlet and the second outlet of the second valve according to the press temperature and the medium temperature in the first tank. The packaging substrate pressing system is good in function redundancy, the stability of the system can be greatly improved, and the temperature of the pressing machine can be precisely controlled in an efficient and energy-saving mode.

Description

Technical Field

[0001] The invention relates to a copper clad laminate production technology, and in particular to a packaging substrate pressing system. Background Art

[0002] The substrate is the basic material for manufacturing PCB. Generally speaking, the substrate is a copper-clad laminate. In the manufacturing of single-sided and double-sided printed boards, hole processing, chemical copper plating, electroplating copper, etching and other processing are selectively performed on the substrate material-copper clad laminate (CCL) to obtain the required circuit pattern. The manufacturing of another type of multi-layer printed boards is also based on the inner core thin copper-clad laminate as the base, and the conductive pattern layer and the prepreg are alternately laminated and bonded together in one time to form more than 3 layers of conductive pattern layer interconnection. It has three functions of conduction, insulation and support. The performance, quality, processability in manufacturing, manufacturing cost, manufacturing level, etc. of the printed board depend to a large extent on the substrate material.

[0003] Existing substrate pressing systems such as Figure 1 As shown, there are the following defects:

[0004] First, when cooling (heating), the hot oil in the compressor needs to circulate in order to continuously cool (heat) through the heat exchanger. The temperature difference ΔT is limited by the area of ​​the heat exchanger and is basically a constant value. It cannot cool down quickly. When the temperature changes, hot oil and cold oil are mixed (especially in the initial stage and the end). In order to improve the temperature control accuracy, the energy consumption per unit time is large, and the heat generation capacity of the equipment is required to be high.

[0005] Secondly, when the waste heat recovery is greater than the heat consumption, the heat recovered from the waste heat cannot be fully used, which will cause the hot oil temperature in the storage tank to continue to rise and exceed the safety limit;

[0006] Third, when the outside temperature is very high in summer, when the high temperature section is cooled down, the high temperature water source converted by the cooling must be transferred to the external heat dissipation system (such as cooling tower) in time. The hot water after the heat exchange will easily burn the heat exchanger of the external heat dissipation system (such as cooling tower);

[0007] Fourth, the unit does not have enough thermal redundancy, and will shut down if the heat source or cooling source fails. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a packaging substrate pressing system with good functional redundancy, which can greatly improve the stability of the system and can precisely control the temperature of the press in an efficient and energy-saving manner.

[0009] In order to solve the above technical problems, the present invention provides a packaging substrate pressing system, which includes a heat exchange group 1, a cold exchange group 2, a first valve 51, a second valve 52, a controller 8 and at least one press group 3;

[0010] The heat exchange group 1, the cold exchange group 2, the first valve 51, the second valve 52, the third valve 53 and the compressor group 3 are connected by pipelines;

[0011] The heat exchange group 1 includes a first tank 11 and a hot tank temperature sensor 81; the hot tank temperature sensor 81 is used to detect the temperature of the medium in the first tank 11;

[0012] The cold exchange group 2 includes a third tank 13 and a cold tank temperature sensor 82; the cold tank temperature sensor 82 is used to detect the temperature of the medium in the third tank 13;

[0013] The press group 3 includes a press 6, a press temperature sensor 63 and a third pump 43;

[0014] The press temperature sensor 63 is used to detect the temperature of the press 6;

[0015] The inlet of the press 6 is the inlet of the upper heating plate 61 and the lower heating plate 62, and the outlet of the press 6 is the outlet of the upper heating plate 61 and the lower heating plate 62;

[0016] The first valve 51 has an inlet connected to the heated medium outlet of the heat exchange group 1, the heated medium outlet is connected to an outlet of the first tank 11, and the outlet is connected to the inlet of the third pump 43;

[0017] The outlet of the third pump 43 is connected to the inlet of the compressor 6;

[0018] The second valve 52 has an inlet connected to the outlet of the press 6, a first outlet connected to the first inlet of the first tank 11, and a second outlet connected to an inlet of the third tank 13;

[0019] The controller 8 is used to control the opening and closing of the first outlet and the second outlet of the second valve 52 according to the temperature of the compressor 6 and the temperature of the medium in the first tank 11.

[0020] Preferably, when the temperature of the compressor 6 is increased, the controller 8 controls the second valve 52 to allow the medium refluxed from the hot plate of the compressor 6 to flow to the third tank 13 of the cold exchange group 2 if the difference between the temperature of the compressor 6 and the temperature of the medium in the first tank 11 is not less than the first set temperature; when the difference between the temperature of the compressor 6 and the temperature of the medium in the first tank 11 is less than the first set temperature, the controller 8 controls the second valve 52 to allow the medium refluxed from the hot plate of the compressor 6 to flow to the first tank 11 of the heat exchange group 1.

[0021] Preferably, the first set temperature is 10°C;

[0022] The temperature of the press 6 is the temperature of the medium at the outlet of the press hot plate or the temperature of the substrate pressing material between the upper and lower hot plates of the press 6;

[0023] The medium temperature in the first tank 11 is the medium temperature at the outlet of the first tank 11;

[0024] The medium temperature in the third tank 13 is the medium temperature at the outlet of the third tank 13 .

[0025] Preferably, the packaging substrate pressing system further includes a third valve 53;

[0026] The first outlet of the second valve 52 is connected to the inlet of the third valve 53;

[0027] The third valve 53 has a second outlet connected to the first inlet of the first tank 11, and a first outlet connected to the first outlet of the first valve 51 and the inlet of the third pump 43;

[0028] The third valve 53 and the first valve 51 are proportional valves of the same type.

[0029] Preferably, when the temperature of the compressor 6 is increased, the controller 8 controls the rotation speed of the third pump 43, the proportional opening of the first valve 51 and the proportional opening of the third valve 53 according to the difference between the temperature of the compressor 6 and the set process temperature.

[0030] Preferably, when the temperature of the compressor 6 is increased, the rotation speed of the third pump 43 is positively correlated with the difference, and the proportional opening of the first outlet of the third valve 53 and the proportional opening of the first outlet of the first valve 51 add up to 1.

[0031] Preferably, when the temperature of the compressor 6 is maintained and the temperature to be maintained is higher than the temperature of the medium in the third tank 13, the controller 8 controls the proportional opening of the first outlet of the third valve 53 and the proportional opening of the first outlet of the first valve 51 according to the temperature to be maintained, and the sum of the proportional opening of the first outlet of the third valve 53 and the proportional opening of the first outlet of the first valve 51 is equal to 1. At the same time, the rotation speed of the third pump 43 is adjusted according to the temperature to be maintained.

[0032] Preferably, the packaging substrate pressing system further includes a fourth valve 54;

[0033] The cold exchange group 2 also includes a second heat exchanger 32, a fourth tank 14, a fifth pump 45 and a cold source 22;

[0034] The second heat exchanger 32 has its cold source side outlet connected to the inlet of the fourth tank 14, its cold source side inlet connected to the outlet of the cold source 22, its compressor side outlet connected to the inlet of the fourth valve 54, and its compressor side inlet connected to the outlet of the third tank 13;

[0035] The fifth pump 45 has its inlet connected to the outlet of the fourth tank 14 and its outlet connected to the inlet of the cold source 22;

[0036] The third valve 53 has a first outlet connected to the first outlet of the first valve 51, the first outlet of the fourth valve 54 and the inlet of the third pump 43;

[0037] The first outlet of the first valve 51 is connected to the first outlet of the fourth valve 54 and the inlet of the third pump 43 through a pipeline, and the second outlet is connected to the inlet of the third tank 13;

[0038] The second outlet of the second valve 52 is connected to the inlet of the third tank 13;

[0039] The second outlet of the fourth valve 54 is connected to the inlet of the third tank 13 .

[0040] Preferably, when the temperature of the compressor 6 is lowered, the controller 8 controls the proportional opening of the third valve 53 and the first valve 51 to gradually change simultaneously, so that the medium flowing out of the compressor 6 returns to the first tank 11 or the third tank 13 .

[0041] Preferably, when the temperature of the compressor 6 is lowered, if the difference between the outlet medium temperature of the compressor 6 and the outlet medium temperature of the first tank 11 is less than the first set temperature, the controller 8 controls the proportional opening of the second outlet of the third valve 53 to increase, thereby increasing the amount of medium returning to the first tank 11.

[0042] Preferably, when lowering the temperature of the compressor 6, if the difference between the outlet medium temperature of the compressor 6 and the set low temperature is less than the first set temperature, the controller 8 controls the first outlet of the second valve 52 to open so that the second valve 52 is connected to the third valve 53, increases the proportional opening of the first outlet of the first valve 51, and increases the proportional opening of the second outlet of the third valve 53, until the outlet medium temperature of the compressor 6 is finally stabilized at the desired temperature and enters the insulation stage.

[0043] Preferably, when the temperature of the compressor 6 is lowered, if the difference between the outlet medium temperature of the compressor 6 and the outlet medium temperature of the first tank 11 is greater than or equal to the first set temperature, the controller 8 controls the proportional opening of the first outlet of the third valve 53 to increase and the proportional opening of the second outlet of the first valve 51 to increase, thereby increasing the amount of medium returning to the third tank 13.

[0044] Preferably, when lowering the temperature of the compressor 6, if the difference between the outlet temperature of the compressor 6 and the outlet temperature of the medium of the first tank 11 is greater than the second set temperature, the second set temperature is greater than the first set temperature, the controller 8 controls the first outlet of the second valve 52 to close and the second outlet to open, and controls the first outlet of the fourth valve 54 to open, so that the medium flowing out of the compressor 6 directly flows to the third tank 13, and then to the compressor side inlet of the second heat exchanger 32, flows from the compressor side outlet of the second heat exchanger 32 to the fourth valve 54, and then flows to the third pump 43 and the compressor 6 for a cooling cycle.

[0045] Preferably, the package substrate pressing system further includes a sixth pump 46;

[0046] The first valve 51 has a second outlet connected to the outlet of the sixth pump 46 and the inlet of the third tank 13;

[0047] The second outlet of the second valve 52 is connected to the outlet of the sixth pump 46 and the inlet of the third tank 13;

[0048] The second outlet of the fourth valve 54 is connected to the inlet of the sixth pump 46 .

[0049] Preferably, the packaging substrate pressing system further includes a high-position slot 71;

[0050] The high-level tank 71 is fixedly disposed above the first tank 11;

[0051] The high-level tank 71 is connected to the top of the first tank 11 to ensure that the volatile gas in the first tank 11 can escape and isolate the high-temperature medium in the first tank 11 from contact with the air.

[0052] Preferably, the press unit 3 further includes a vacuum pump 65 and a pressure sensor 66;

[0053] The pressure sensor 66 is used to detect the pressure inside the sealing colloid of the pressed product of the press 6;

[0054] The inlet of the vacuum pump 65 is connected to the sealed cavity of the pressed product of the press 6;

[0055] The controller controls the vacuum pump 65 to stop working when the pressure in the sealing colloid reaches a set value;

[0056] The controller adopts a PLC system or an industrial PC or its computing control system.

[0057] Preferably, the heat exchange group 1 further includes a second tank 12, a heat source 21, a first heat exchanger 31, a first pump 41 and a second pump 42;

[0058] The first heat exchanger 31 has its heat source side inlet connected to the outlet of the heat source 21, its heat source side outlet connected to the inlet of the second tank 12, its compressor side inlet connected to the outlet of the first tank 11, and its compressor side outlet connected to the inlet of the first pump 41 through a pipeline;

[0059] The second pump 42 has an inlet connected to the outlet of the second tank 12 and an outlet connected to the inlet of the heat source 21;

[0060] the first pump 41, whose outlet is connected to the second inlet of the first tank 11;

[0061] The pipeline from the compressor side outlet to the inlet of the first pump 41 is provided with the heated medium outlet of the heat exchange group 1 .

[0062] Preferably, the heat exchange group 1 further includes a heat source 21 and a seventh pump 47;

[0063] The first outlet of the first tank 11 serves as the outlet of the heated medium of the heat exchange group 1;

[0064] The second outlet of the first tank 11 is connected to the inlet of the seventh pump 47;

[0065] The heat source 21 has its inlet connected to the outlet of the seventh pump 47 , and its outlet connected to the second inlet of the first tank 11 .

[0066] Preferably, the heat exchange group 1 further includes a waste heat recovery device 24 and an eighth pump 48;

[0067] The third outlet of the first tank 11 is connected to the inlet of the eighth pump 48;

[0068] The waste heat recovery device 24 has its inlet connected to the outlet of the eighth pump 48 , and its outlet connected to the third inlet of the first tank 11 .

[0069] Preferably, the packaging substrate pressing system further includes a fifth valve 55 and a sixth valve 56;

[0070] The fifth valve 55 has an outlet connected to the fourth inlet of the first tank 11 and an inlet connected to the second outlet of the second valve 52;

[0071] The sixth valve 56 has an outlet connected to the inlet of the third tank 13 , and an inlet connected to the second outlet of the second valve 52 .

[0072] Preferably, when lowering the temperature of the compressor 6, when the medium temperature of the first tank 11 is higher than the safety threshold, the controller controls the closing of the sixth valve 56, opens the fifth valve 55, opens the second outlet of the fourth valve 54, and pumps the medium in the third tank 13 into the first tank 11 for cooling.

[0073] In the packaging substrate pressing system of the present invention, the controller 8 controls the opening and closing of the first outlet and the second outlet of the second valve 52 according to the temperature of the press 6 and the temperature of the medium in the first tank 11. When the heat source of the heat exchange group 1 or the cold source of the cooling unit 2 fails, the first tank 11 (hot oil tank) or the cold oil tank (third tank 13) still has a certain heat retention effect, has good functional redundancy, can greatly improve the stability of the system, and can accurately control the temperature of the press 6 with high efficiency and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0075] Figure 1 It is a schematic diagram of the structure of an existing substrate pressing system;

[0076] Figure 2 It is a schematic diagram of a multi-training group structure of an embodiment of a packaging substrate pressing system of the present invention;

[0077] Figure 3 It is a schematic structural diagram of a single pressing unit of an embodiment of a packaging substrate pressing system of the present invention;

[0078] Figure 4 It is a structural schematic diagram of a single pressing unit of another embodiment of the packaging substrate pressing system of the present invention.

[0079] Description of reference numerals:

[0080] 1 heat exchange group; 2 cold exchange group; 3 press group; 8 controller; 6 press; 61 upper hot plate; 62 lower hot plate; 63 press temperature sensor; 65 vacuum pump; 66 pressure sensor; 11 first tank; 12 second tank; 13 third tank; 14 fourth tank; 21 heat source; 24 waste heat recovery device; 22 cold source; 31 first heat exchanger; 32 second heat exchanger; 41 first pump; 42 second pump; 43 third pump; 45 fifth pump; 46 sixth pump; 47 seventh pump; 48 eighth pump; 51 first valve; 52 second valve; 53 third valve; 54 fourth valve; 55 fifth valve; 56 sixth valve; 71 high-level tank; 81 hot tank temperature sensor; 82 cold tank temperature sensor. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] The words "first", "second" and similar terms used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprises" and similar terms mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "front", "back" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0083] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0084] Embodiment 1

[0085] like Figure 2 , Figure 3 , Figure 4 As shown, the package substrate pressing system includes a heat exchange group 1, a cold exchange group 2, a first valve 51, a second valve 52, a controller 8 and at least one press group 3;

[0086] The heat exchange group 1, the cold exchange group 2, the first valve 51, the second valve 52, the third valve 53 and the compressor group 3 are connected by pipelines;

[0087] The heat exchange group 1 includes a first tank 11 and a hot tank temperature sensor 81; the hot tank temperature sensor 81 is used to detect the temperature of the medium in the first tank 11;

[0088] The cold exchange group 2 includes a third tank 13 and a cold tank temperature sensor 82; the cold tank temperature sensor 82 is used to detect the temperature of the medium in the third tank 13;

[0089] The press group 3 includes a press 6, a press temperature sensor 63 and a third pump 43;

[0090] The press temperature sensor 63 is used to detect the temperature of the press 6;

[0091] The inlet of the press 6 is the inlet of the upper heating plate 61 and the lower heating plate 62, and the outlet of the press 6 is the outlet of the upper heating plate 61 and the lower heating plate 62;

[0092] The first valve 51 has an inlet connected to the heated medium outlet of the heat exchange group 1, the heated medium outlet is connected to an outlet of the first tank 11, and the outlet is connected to the inlet of the third pump 43;

[0093] The outlet of the third pump 43 is connected to the inlet of the compressor 6;

[0094] The second valve 52 has an inlet connected to the outlet of the press 6, a first outlet connected to the first inlet of the first tank 11, and a second outlet connected to an inlet of the third tank 13;

[0095] The controller 8 is used to control the opening and closing of the first outlet and the second outlet of the second valve 52 according to the temperature of the compressor 6 and the temperature of the medium in the first tank 11.

[0096] In the packaging substrate pressing system of the first embodiment, the controller 8 controls the opening and closing of the first outlet and the second outlet of the second valve 52 according to the temperature of the press 6 and the temperature of the medium in the first tank 11. When the heat source of the heat exchange group 1 or the cold source of the cooling unit 2 fails, the first tank 11 (hot oil tank) or the cold oil tank (third tank 13) still has a certain heat retention effect, has good functional redundancy, can greatly improve the stability of the system, and can accurately control the temperature of the press 6 with high efficiency and energy saving.

[0097] Embodiment 2

[0098] Based on the packaging substrate pressing system of embodiment 1, the controller 8, when increasing the temperature of the press 6, if the difference between the temperature of the press 6 and the temperature of the medium in the first tank 11 is not less than the first set temperature (for example, 10°C), the second valve 52 is controlled to make the medium refluxed from the hot plate of the press 6 first flow to the third tank 13 of the cold exchange group 2 through the second outlet of the second valve 52; when the difference between the temperature of the press 6 and the temperature of the medium in the first tank 11 is less than the first set temperature (for example, 10°C), the second valve 52 is controlled to make the medium refluxed from the hot plate of the press 6 flow to the first tank 11 of the heat exchange group 1 through its first outlet.

[0099] Preferably, the temperature of the press 6 is the temperature of the medium at the outlet of the press hot plate or the temperature of the substrate pressing material between the upper and lower hot plates of the press 6 .

[0100] Preferably, the medium temperature in the first tank 11 is the medium temperature at the outlet of the first tank 11;

[0101] Preferably, the medium temperature in the third tank 13 is the medium temperature at the outlet of the third tank 13 .

[0102] In the packaging substrate pressing system of the second embodiment, when the temperature of the press 6 is increased, the heat of the medium comes from the medium in the first tank 11. In the process of increasing the temperature of the press 6, the medium containing high heat enters the hot plate of the press 6 through the first valve 51 connected to the third pump 43, and then returns to the first tank 11 from the hot plate through the first outlet of the second valve 52. When the temperature of the press 6 is increased, as the difference between the temperature of the press 6 and the set process temperature becomes smaller, the controller 8 controls the speed of the third pump 43 to decrease and controls the opening of the first valve 51 and the second valve 52 accordingly. When the temperature of the compressor 6 is initially increased, there is a part of cold oil in the compressor 6 and the pipeline. At this time, when the difference between the temperature of the compressor 6 and the temperature of the medium in the first tank 11 is not less than the first set temperature (e.g. 10°C), the medium refluxed from the hot plate of the compressor 6 first flows to the third tank 13 of the cold exchange group 2 through the second outlet of the second valve 52; when it is detected that the difference between the temperature of the compressor 6 and the temperature of the medium in the first tank 11 is less than the first set temperature (e.g. 10°C), the controller controls the opening of the first outlet of the second valve 52 to increase so that the medium flows to the first tank 11 of the heat exchange group 1. The package substrate pressing system of the first embodiment can ensure that the cold medium returns to the third tank 13 of the cold exchange group 2 and the hot medium returns to the first tank 11 of the heat exchange group 1 during the period of increasing the temperature of the compressor 6, so that the heat can be fully utilized without waste, greatly improving energy efficiency.

[0103] Embodiment 3

[0104] Based on the second embodiment, Figure 3 , Figure 4 As shown, the packaging substrate pressing system further includes a third valve 53;

[0105] The first outlet of the second valve 52 is connected to the inlet of the third valve 53;

[0106] The third valve 53 has a second outlet connected to the first inlet of the first tank 11, and a first outlet connected to the first outlet of the first valve 51 and the inlet of the third pump 43;

[0107] The third valve 53 and the first valve 51 are proportional valves of the same type.

[0108] Preferably, when the temperature of the compressor 6 is increased, the controller 8 controls the rotation speed of the third pump 43, the proportional opening of the first valve 51 and the proportional opening of the third valve 53 according to the difference between the temperature of the compressor 6 and the set process temperature.

[0109] Preferably, when the temperature of the compressor 6 is increased, the rotation speed of the third pump 43 is positively correlated with the difference, and the proportional opening of the first outlet of the third valve 53 and the proportional opening of the first outlet of the first valve 51 add up to 1.

[0110] Preferably, when the temperature of the compressor 6 is maintained, and the temperature to be maintained is higher than the temperature of the medium in the third tank 13, the controller 8 controls the proportional opening of the first outlet of the third valve 53 and the proportional opening of the first outlet of the first valve 51 according to the temperature to be maintained, and the proportional opening of the first outlet of the third valve 53 plus the proportional opening of the first outlet of the first valve 51 is equal to 1, and the speed of the third pump 43 is adjusted according to the temperature to be maintained. The flow rate of the two valves can ensure the temperature stability, thereby accurately maintaining the temperature.

[0111] In the packaging substrate pressing system of the third embodiment, when the temperature of the press 6 is increased, the heat of the medium comes from the medium in the first tank 11. In the process of increasing the temperature of the press 6, the medium containing high heat enters the hot plate of the press 6 through the first outlet of the first valve 51 connected to the third pump 43, and then returns to the first tank 11 from the hot plate through the first outlet of the second valve 52 and the second outlet of the third valve 53. When the temperature of the press 6 is increased, as the difference between the temperature of the press 6 and the set process temperature becomes smaller, the controller 8 controls the speed of the third pump 43 to decrease accordingly, and controls the proportional opening of the third valve 53 and the first valve 51, so as to accurately control the temperature of the press 6 and improve energy efficiency.

[0112] Embodiment 4

[0113] Based on Example 3, Figure 3 , Figure 4 As shown, the package substrate pressing system further includes a fourth valve 54;

[0114] The cold exchange group 2 also includes a second heat exchanger 32, a fourth tank 14, a fifth pump 45 and a cold source (such as a cooling tower) 22;

[0115] The second heat exchanger 32 has its cold source side outlet connected to the inlet of the fourth tank 14, its cold source side inlet connected to the outlet of the cold source 22, its compressor side outlet connected to the inlet of the fourth valve 54, and its compressor side inlet connected to the outlet of the third tank 13;

[0116] The fifth pump 45 has its inlet connected to the outlet of the fourth tank 14 and its outlet connected to the inlet of the cold source 22;

[0117] The third valve 53 has a first outlet connected to the first outlet of the first valve 51, the first outlet of the fourth valve 54 and the inlet of the third pump 43;

[0118] The first outlet of the first valve 51 is connected to the first outlet of the fourth valve 54 and the inlet of the third pump 43 through a pipeline, and the second outlet is connected to the inlet of the third tank 13;

[0119] The second outlet of the second valve 52 is connected to the inlet of the third tank 13;

[0120] The second outlet of the fourth valve 54 is connected to the inlet of the third tank 13 .

[0121] Preferably, when the temperature of the compressor 6 is lowered, a large amount of heat needs to be absorbed. The controller 8 controls the proportional opening of the third valve 53 and the first valve 51 to gradually change at the same time, so that the medium flowing out of the compressor 6 returns to the first tank 11 or the third tank 13.

[0122] Preferably, when the temperature of the compressor 6 is lowered, if the difference between the outlet medium temperature of the compressor 6 and the outlet medium temperature of the first tank 11 is less than the first set temperature, the controller 8 controls the proportional opening of the second outlet of the third valve 53 to increase, thereby increasing the amount of medium returning to the first tank 11.

[0123] Preferably, when lowering the temperature of the compressor 6, if the difference between the outlet medium temperature of the compressor 6 and the set low temperature is less than the first set temperature, the controller 8 controls the first outlet of the second valve 52 to open so that the second valve 52 is connected to the third valve 53, increases the proportional opening of the first outlet of the first valve 51, and increases the proportional opening of the second outlet of the third valve 53, until the outlet medium temperature of the compressor 6 is finally stabilized at the desired temperature and enters the insulation stage.

[0124] Preferably, when the temperature of the compressor 6 is lowered, if the difference between the outlet medium temperature of the compressor 6 and the outlet medium temperature of the first tank 11 is greater than or equal to the first set temperature, the controller 8 controls the proportional opening of the first outlet of the third valve 53 to increase and the proportional opening of the second outlet of the first valve 51 to increase, thereby increasing the amount of medium returning to the third tank 13.

[0125] Preferably, when lowering the temperature of the compressor 6, if the difference between the outlet temperature of the compressor 6 medium and the temperature of the medium in the first tank 11 is greater than the second set temperature (for example, 20°C, a large temperature difference), the second set temperature is greater than the first set temperature, and the controller 8 controls the first outlet of the second valve 52 to close and the second outlet to open, and controls the first outlet of the fourth valve 54 to open, so that the medium flowing out of the compressor 6 directly flows to the third tank 13, and then to the compressor side inlet of the second heat exchanger 32, flows from the compressor side outlet of the second heat exchanger 32 to the fourth valve 54, and then flows to the third pump 43 and the compressor 6 for a cooling cycle.

[0126] In the packaging substrate pressing system of the fourth embodiment, the inlet and outlet on the cold source side of the second heat exchanger 32, the fourth tank 14, the fifth pump 45, and the cold source (such as a cooling tower) 22 constitute a cold source input cycle, the inlet on the compressor side of the second heat exchanger 32 is connected to the outlet of the third tank 13, the outlet on the compressor side is connected to the fourth valve 54, and an outlet of the fourth valve 54 is connected to the inlet of the sixth pump 46, forming a cold source output cycle.

[0127] Embodiment 5

[0128] Based on the fourth embodiment, Figure 3 , Figure 4As shown, the package substrate pressing system further includes a sixth pump 46;

[0129] The first valve 51 has a second outlet connected to the outlet of the sixth pump 46 and the inlet of the third tank 13;

[0130] The second outlet of the second valve 52 is connected to the outlet of the sixth pump 46 and the inlet of the third tank 13;

[0131] The second outlet of the fourth valve 54 is connected to the inlet of the sixth pump 46 .

[0132] In the packaging substrate pressing system of the fifth embodiment, the heat-carrying medium passes through the press side outlet of the first heat exchanger 31, passes through the first valve 51 and the third pump 43, and is connected to the inlets of the upper hot plate 61 and the lower hot plate 62 of the press 6 through a delivery pipeline, and is connected to the inlet of the second valve 52 through the outlet of the hot plate, and then is connected to the outlet of the sixth pump 46 through a pipeline through the second outlet of the second valve 52 and is also connected to the inlet of the third tank 13. The outlet of the third tank 13 is connected to the press side inlet of the second heat exchanger 32.

[0133] In the packaging substrate pressing system of the fifth embodiment, when the temperature of the press is increased, when the cold exchange group 2 does not participate in the supply of the press medium, the internal circulation of the cold exchange group 2 and the sixth pump 46 can cool the medium in the third tank 13 to a temperature close to the cold source temperature. Similarly, when the temperature of the press is lowered, when the heat exchange group 1 does not participate in the supply of the press medium, the heat exchange system can heat the medium in the first tank 11 to a specified temperature value. The two systems of the cold exchange group 2 and the heat exchange group 1 can be operated independently without affecting each other, which can minimize the loss of heat exchange and greatly maintain the stability of the system temperature and the functional redundancy of heat.

[0134] Embodiment 6

[0135] Based on the first embodiment, the package substrate pressing system further includes a high-position slot 71;

[0136] The high-level tank 71 is fixedly disposed above the first tank 11;

[0137] The high-level tank 71 is connected to the top of the first tank 11 to ensure that the volatile gas in the first tank 11 can escape and isolate the high-temperature medium in the first tank 11 from contact with the air.

[0138] Preferably, the high-level tank 71 is fixedly disposed at a position greater than 2 meters above the first tank 11 .

[0139] Preferably, the press unit 3 further includes a vacuum pump 65 and a pressure sensor 66;

[0140] The pressure sensor 66 is used to detect the pressure inside the sealing colloid of the pressed product of the press 6;

[0141] The inlet of the vacuum pump 65 is connected to the sealed cavity of the pressed product of the press 6;

[0142] The controller controls the vacuum pump 65 to stop working when the pressure in the sealing colloid reaches a set value.

[0143] Preferably, the controller adopts a PLC system or an industrial PC or its computing control system.

[0144] Embodiment 7

[0145] Based on the packaging substrate pressing system of the first embodiment, Figure 3 As shown, the heat exchange group 1 further includes a second tank 12, a heat source (such as a boiler) 21, a first heat exchanger 31, a first pump 41 and a second pump 42;

[0146] The first heat exchanger 31 has its heat source side inlet connected to the outlet of the heat source 21, its heat source side outlet connected to the inlet of the second tank 12, its compressor side inlet connected to the outlet of the first tank 11, and its compressor side outlet connected to the inlet of the first pump 41 through a pipeline;

[0147] The second pump 42 has an inlet connected to the outlet of the second tank 12 and an outlet connected to the inlet of the heat source 21;

[0148] the first pump 41, whose outlet is connected to the second inlet of the first tank 11;

[0149] The pipeline from the compressor side outlet to the inlet of the first pump 41 is provided with the heated medium outlet of the heat exchange group 1 .

[0150] In the packaging substrate pressing system of Example 7, the heat exchange group 1 is composed of a heat source (such as a boiler) 21, a second pump 42, a second tank 12, and a first heat exchanger 31 to form a heat source input. The medium flows to the second tank 12 through the outlet on the heat source side of the first heat exchanger 31, flows to the heat source 21 driven by the second pump 42, and then flows from the heat source 21 to the inlet on the heat source side of the first heat exchanger 31, forming a cycle; the heat generated by the heat source 21 is transferred from the first heat exchanger 31 to the circulation system on the other side (press side), and the medium carrying the heat flows to the first pump 41 through the outlet on the other side (press side) of the first heat exchanger 31, then flows to the first tank 11, and then flows back to the inlet on the other side (press side) of the first heat exchanger 31.

[0151] Embodiment 8

[0152] Based on the packaging substrate pressing system of the fifth embodiment, Figure 4 As shown, the heat exchange group 1 also includes a heat source (such as a boiler) 21 and a seventh pump 47;

[0153] The first outlet of the first tank 11 serves as the outlet of the heated medium of the heat exchange group 1;

[0154] The second outlet of the first tank 11 is connected to the inlet of the seventh pump 47;

[0155] The heat source 21 has its inlet connected to the outlet of the seventh pump 47 , and its outlet connected to the second inlet of the first tank 11 .

[0156] Preferably, the heat exchange group 1 further includes a waste heat recovery device 24 and an eighth pump 48;

[0157] The third outlet of the first tank 11 is connected to the inlet of the eighth pump 48;

[0158] The waste heat recovery device 24 has its inlet connected to the outlet of the eighth pump 48 , and its outlet connected to the third inlet of the first tank 11 .

[0159] Preferably, the packaging substrate pressing system further includes a fifth valve 55 and a sixth valve 56;

[0160] The fifth valve 55 has an outlet connected to the fourth inlet of the first tank 11 and an inlet connected to the second outlet of the second valve 52;

[0161] The sixth valve 56 has an outlet connected to the inlet of the third tank 13 , and an inlet connected to the second outlet of the second valve 52 .

[0162] Preferably, when the temperature of the compressor 6 is lowered, when the temperature of the medium in the first tank 11 is higher than the safety threshold, the controller controls the closing of the sixth valve 56, the opening of the fifth valve 55, the opening of the second outlet of the fourth valve 54, and the pumping of the medium in the third tank 13 into the first tank 11 for cooling. The amount of the medium can be controlled by the speed of the sixth pump 46 and the opening of the second outlet of the fourth valve 54.

[0163] In the packaging substrate pressing system of the eighth embodiment, the heat source medium of the heat exchange group 1 and the heat transfer medium of the press are mutually connected, and the excess heat energy can be recycled and utilized.

[0164] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A packaging substrate pressing system, characterized in that: It comprises a heat exchange group (1), a cold exchange group (2), a first valve (51), a second valve (52), a controller (8) and at least one compressor group (3); The heat exchange group (1), the cold exchange group (2), the first valve (51), the second valve (52), the third valve (53) and the compressor group (3) are connected via pipelines; The heat exchange group (1) comprises a first tank (11) and a hot tank temperature sensor (81); the hot tank temperature sensor (81) is used to detect the temperature of the medium in the first tank (11); The cold exchange group (2) comprises a third tank (13) and a cold tank temperature sensor (82); the cold tank temperature sensor (82) is used to detect the temperature of the medium in the third tank (13); The press group (3) comprises a press (6), a press temperature sensor (63) and a third pump (43); The press temperature sensor (63) is used to detect the temperature of the press (6); The inlet of the press (6) is the inlet of the upper heating plate (61) and the lower heating plate (62), and the outlet of the press (6) is the outlet of the upper heating plate (61) and the lower heating plate (62); The first valve (51) has an inlet connected to the heated medium outlet of the heat exchange group (1), the heated medium outlet is connected to an outlet of the first tank (11), and the outlet is connected to the inlet of the third pump (43); The outlet of the third pump (43) is connected to the inlet of the press (6); The second valve (52) has an inlet connected to the outlet of the press (6), a first outlet connected to the first inlet of the first tank (11), and a second outlet connected to an inlet of the third tank (13); The controller (8) is used to control the opening and closing of the first outlet and the second outlet of the second valve (52) according to the temperature of the press (6) and the temperature of the medium in the first tank (11).

2. The packaging substrate pressing system according to claim 1, characterized in that: The controller (8) controls the second valve (52) to allow the medium refluxed from the hot plate of the compressor (6) to flow to the third tank (13) of the cold exchange group (2) when the temperature of the compressor (6) is increased and if the difference between the temperature of the compressor (6) and the temperature of the medium in the first tank (11) is not less than a first set temperature; and controls the second valve (52) to allow the medium refluxed from the hot plate of the compressor (6) to flow to the first tank (11) of the heat exchange group (1) when the difference between the temperature of the compressor (6) and the temperature of the medium in the first tank (11) is less than the first set temperature.

3. The packaging substrate pressing system according to claim 2, characterized in that: The temperature of the press (6) is the temperature of the medium at the outlet of the press hot plate or the temperature of the substrate pressing material between the upper and lower hot plates of the press (6); The medium temperature in the first tank (11) is the medium temperature at the outlet of the first tank (11); The medium temperature in the third tank (13) is the medium temperature at the outlet of the third tank (13).

4. The packaging substrate pressing system according to claim 2, characterized in that: The packaging substrate pressing system further includes a third valve (53); The second valve (52) has a first outlet connected to an inlet of the third valve (53); The third valve (53) has a second outlet connected to the first inlet of the first tank (11), and a first outlet connected to the first outlet of the first valve (51) and the inlet of the third pump (43); The third valve (53) and the first valve (51) are proportional valves of the same type.

5. The packaging substrate pressing system according to claim 4, characterized in that: When the temperature of the compressor (6) is increased, the controller (8) controls the rotation speed of the third pump (43), the proportional opening of the first valve (51) and the proportional opening of the third valve (53) according to the difference between the temperature of the compressor (6) and the set process temperature.

6. The packaging substrate pressing system according to claim 5, characterized in that: When the temperature of the compressor (6) is increased, the rotation speed of the third pump (43) is positively correlated with the difference, and the proportional opening of the first outlet of the third valve (53) and the proportional opening of the first outlet of the first valve (51) add up to 1.

7. The packaging substrate pressing system according to claim 4, characterized in that: When the temperature of the compressor (6) is maintained and the temperature to be maintained is higher than the temperature of the medium in the third tank (13), the controller (8) controls the proportional opening of the first outlet of the third valve (53) and the proportional opening of the first outlet of the first valve (51) according to the temperature to be maintained, and the sum of the proportional opening of the first outlet of the third valve (53) and the proportional opening of the first outlet of the first valve (51) is equal to 1. At the same time, the rotation speed of the third pump (43) is adjusted according to the temperature to be maintained.

8. The packaging substrate pressing system according to claim 4, characterized in that: The packaging substrate pressing system further includes a fourth valve (54); The cold exchange group (2) further comprises a second heat exchanger (32), a fourth tank (14), a fifth pump (45) and a cold source (22); The second heat exchanger (32) has a cold source side outlet connected to the inlet of the fourth tank (14), a cold source side inlet connected to the cold source (22) outlet, a compressor side outlet connected to the inlet of the fourth valve (54), and a compressor side inlet connected to the outlet of the third tank (13); The fifth pump (45) has an inlet connected to the outlet of the fourth tank (14), and an outlet connected to the inlet of the cold source (22); The third valve (53) has a first outlet connected to the first outlet of the first valve (51), the first outlet of the fourth valve (54) and the inlet of the third pump (43); The first valve (51) has a first outlet connected to the first outlet of the fourth valve (54) and the inlet of the third pump (43) through a pipeline, and a second outlet connected to the inlet of the third tank (13); The second outlet of the second valve (52) is connected to the inlet of the third tank (13); The second outlet of the fourth valve (54) is connected to the inlet of the third tank (13).

9. The packaging substrate pressing system according to claim 8, characterized in that: When the temperature of the compressor (6) is lowered, the controller (8) controls the proportional opening of the third valve (53) and the first valve (51) to gradually change simultaneously, so that the medium flowing out of the compressor (6) returns to the first tank (11) or to the third tank (13).

10. The packaging substrate pressing system according to claim 9, characterized in that: When the temperature of the compressor (6) is lowered, if the difference between the outlet temperature of the compressor (6) and the outlet temperature of the medium of the first tank (11) is less than the first set temperature, the controller (8) controls the proportional opening of the second outlet of the third valve (53) to increase, thereby increasing the amount of medium returning to the first tank (11).

11. The packaging substrate pressing system according to claim 9, characterized in that: When the temperature of the compressor (6) is lowered, if the difference between the outlet medium temperature of the compressor (6) and the set low temperature is less than the first set temperature, the controller (8) controls the first outlet of the second valve (52) to open so that the second valve (52) is connected to the third valve (53), increases the proportional opening of the first outlet of the first valve (51), and increases the proportional opening of the second outlet of the third valve (53), until the outlet medium temperature of the compressor (6) is finally stabilized at the desired temperature, and enters the insulation stage.

12. The packaging substrate pressing system according to claim 9, characterized in that: When the temperature of the compressor (6) is lowered, if the difference between the temperature of the medium at the outlet of the compressor (6) and the temperature of the medium in the first tank (11) is greater than or equal to the first set temperature, the controller (8) controls the proportional opening of the first outlet of the third valve (53) to increase and the proportional opening of the second outlet of the first valve (51) to increase, thereby increasing the amount of medium returning to the third tank (13).

13. The packaging substrate pressing system according to claim 9, characterized in that: When lowering the temperature of the compressor (6), if the difference between the outlet temperature of the compressor (6) and the outlet temperature of the medium of the first tank (11) is greater than the second set temperature, the second set temperature is greater than the first set temperature, and the controller (8) controls the first outlet of the second valve (52) to close and the second outlet to open, and controls the first outlet of the fourth valve (54) to open, so that the medium flowing out of the compressor (6) directly flows to the third tank (13), and then flows to the compressor side inlet of the second heat exchanger (32), flows from the compressor side outlet of the second heat exchanger (32) to the fourth valve (54), and then flows to the third pump (43) and the compressor (6) to perform a cooling cycle.

14. The packaging substrate pressing system according to claim 8, characterized in that: The packaging substrate pressing system also includes a sixth pump (46); The first valve (51) has a second outlet connected to the outlet of the sixth pump (46) and the inlet of the third tank (13); The second outlet of the second valve (52) is connected to the outlet of the sixth pump (46) and the inlet of the third tank (13); The second outlet of the fourth valve (54) is connected to the inlet of the sixth pump (46).

15. The packaging substrate pressing system according to claim 1, characterized in that: The packaging substrate pressing system also includes a high-level slot (71); The high-level tank (71) is fixedly arranged above the first tank (11); The high-level tank (71) is connected to the top of the first tank (11) to ensure that the volatile gas in the first tank (11) escapes and isolates the high-temperature medium in the first tank (11) from contact with air.

16. The packaging substrate pressing system according to claim 1, characterized in that: The press unit (3) further comprises a vacuum pump (65) and a pressure sensor (66); The pressure sensor (66) is used to detect the pressure inside the sealing colloid of the pressed product by the press (6); The inlet of the vacuum pump (65) is connected to the sealed cavity of the pressed product of the press (6); The controller controls the vacuum pump (65) to stop working when the pressure in the sealing colloid reaches a set value; The controller adopts a PLC system or an industrial PC or its computing control system.

17. The packaging substrate pressing system according to claim 1, characterized in that: The heat exchange group (1) further comprises a second tank (12), a heat source (21), a first heat exchanger (31), a first pump (41) and a second pump (42); The first heat exchanger (31) has a heat source side inlet connected to the outlet of the heat source (21), a heat source side outlet connected to the inlet of the second tank (12), a compressor side inlet connected to the outlet of the first tank (11), and a compressor side outlet connected to the inlet of the first pump (41) through a pipeline; The second pump (42) has an inlet connected to the outlet of the second tank (12), and an outlet connected to the inlet of the heat source (21); the first pump (41) having an outlet connected to the second inlet of the first tank (11); The pipeline from the compressor side outlet to the inlet of the first pump (41) is provided with a heated medium outlet of the heat exchange group (1).

18. The packaging substrate pressing system according to claim 14, characterized in that: The heat exchange group (1) further comprises a heat source (21) and a seventh pump (47); The first outlet of the first tank (11) serves as an outlet for the heated medium of the heat exchange group (1); The second outlet of the first tank (11) is connected to the inlet of a seventh pump (47); The heat source (21) has its inlet connected to the outlet of the seventh pump (47), and its outlet connected to the second inlet of the first tank (11).

19. The packaging substrate pressing system according to claim 18, characterized in that: The heat exchange group (1) further comprises a waste heat recovery device (24) and an eighth pump (48); The third outlet of the first tank (11) is connected to the inlet of an eighth pump (48); The waste heat recovery device (24) has an inlet connected to the outlet of the eighth pump (48), and an outlet connected to the third inlet of the first tank (11).

20. The packaging substrate pressing system according to claim 18, characterized in that: The packaging substrate pressing system also includes a fifth valve (55) and a sixth valve (56); The fifth valve (55) has an outlet connected to the fourth inlet of the first tank (11) and an inlet connected to the second outlet of the second valve (52); The sixth valve (56) has its outlet connected to the inlet of the third tank (13), and its inlet connected to the second outlet of the second valve (52).

21. The packaging substrate pressing system according to claim 20, characterized in that: When the temperature of the compressor (6) is lowered, when the temperature of the medium in the first tank (11) is higher than the safety threshold, the controller controls the closing of the sixth valve (56), the opening of the fifth valve (55), the opening of the second outlet of the fourth valve (54), and the pumping of the medium in the third tank (13) into the first tank (11) for cooling.

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