TWI710296B - Gas-liquid-cooled plate press and cooling method used therefor - Google Patents

Abstract

A gas-liquid-cooled plate pressing machine includes a base, two main pressing plates, and an inflow distribution unit. The main pressing plates are arranged at intervals along a pressing axis, and each main pressing plate includes a drive that can be driven along the pressing axis. A movable main body, a plurality of main heating elements passing through the main body, and a main temperature sensing element disposed on the main body and used to sense the temperature of the main body. Each main body has a main inlet and a main main body. An outlet, and a main cooling channel that communicates with the main flow inlet and the main flow outlet and allows fluid to pass through. The inflow distribution unit communicates with the main flow inlets of the main pressure plates and is used to control the inflow of air and liquid respectively. When the temperature of the main board body is relatively high, air is first used to lower the temperature of the main board body, so as to prevent the liquid from boiling after entering the main cooling channel, thereby achieving a safer use process.

Description

Gas-liquid-cooled plate pressing machine and cooling method used therefor

The present invention relates to a hot press forming equipment, in particular to a gas-liquid cooling press machine suitable for hot press forming PCB boards.

An existing plate pressing machine, as disclosed in Chinese Patent Grant Announcement No. CN205667038U, is suitable for multiple substrates. The existing plate pressing machine includes a base, two pressing plates, and a cooling unit. The pressing plates are arranged at intervals along a pressing axis. Parallel to the base, each pressing plate has a plate body that can be driven to move along the pressurizing axis and arranged on the base, and a plurality of heating elements passing through the plate body, the plate body has a first-rate inlet, A flow outlet, and a cooling channel communicating the inlet and the outlet, the cooling unit has a circulation pipeline communicating the inlets and the outlets, a cooling box communicating the circulation pipeline, and a The cooling fluid circulating in the circulation pipeline and the cooling channels and used for reducing the temperature of the plate bodies can be cooled by the cooling box.

By alternately stacking the substrates and the copper foils between the pressing plates, and then using the heating elements to increase the temperature of the board bodies, and then driving the pressing plates to press the copper foils against the substrates, Finally, the temperature of the board body is reduced by the cooling fluid.

However, during the pressing process, the temperature of the plate bodies will increase to more than 150 degrees Celsius. In order to cool the cooling fluid flowing through the cooling channel to increase the temperature, a lot of energy is required. In addition, the plate bodies When the temperature rises again, the remaining liquid in the cooling channel and the cooling fluid that has just entered the cooling channel will boil due to the high temperature and cause damage to the components, resulting in unsafe use.

Therefore, the object of the present invention is to provide a gas-liquid-cooled plate press which can make the use process safer.

Therefore, the gas-liquid-cooled plate press of the present invention includes a base, two main plates, and an inflow distribution unit.

The main pressing plates are arranged at intervals along a pressing axis and parallel to the base, and each main pressing plate includes a main board body which can be driven to move along the pressing axis and arranged on the base, and a plurality of main pressing boards pass through the main board. The main heating element of the main body, and a main temperature sensing element arranged on the main body and used to sense the temperature of the main body, each main body has a main flow inlet, a main flow outlet, and a connection between the main flow inlet and the main flow Outlet and main cooling channel for fluid to pass through. The inflow distribution unit communicates with the main flow inlets of the main pressure plates and is used to control the inflow of air and liquid respectively.

Therefore, the cooling method for a gas-liquid-cooled plate press of the present invention includes the following steps: (A) Prepare a gas-liquid-cooled plate press. The gas-liquid-cooled plate press includes two main plates and an inflow distribution unit. A main pressure plate includes a main board body, and a main temperature sensing element arranged on the main board body and used to sense the temperature of the main board body. The main board body has a main flow inlet, a main flow outlet, and a main flow inlet and The main flow outlet and the main cooling channel through which the fluid can pass, the inflow distribution unit communicates with the main flow inlets of the main pressure plates and is used to control the inflow of air and liquid respectively. Step (B) According to the temperature sensed by the main temperature sensing element, when the temperature of the main body is greater than a first set temperature, air is introduced into the main cooling channel, and when the temperature of the main body is lower than the first set temperature Optionally introduce liquid, air or a mixture of liquid and air.

The effect of the present invention is that when the temperature of the main board body is relatively high, the air is first used to lower the temperature of the main board body, so as to prevent the liquid from boiling after entering the main cooling channel, thereby achieving a safer use process.

Referring to Figures 1, 2 and 3, an embodiment of the gas-liquid cooling plate press of the present invention includes a base 2, two main press plates 3, an inflow distribution unit 4, a first discharge distribution unit 5, and a secondary press plate 6. , And two copper foil 7.

The main pressing plates 3 are arranged at intervals along a pressing axis Z and parallel to the base 2, and each main pressing plate 3 includes a main board body 31 that can be driven to move along the pressing axis Z and disposed on the base 2 A plurality of main heating elements 32 passing through the main board body 31, and a main temperature sensing element 33 disposed on the main board main body 31 and used to sense the temperature of the main board main body 31, each main board main body 31 has a main inlet 311 , A main flow outlet 312, a main cooling channel 313 connecting the main flow inlet 311 and the main flow outlet 312 and allowing fluid to pass therethrough, and a pressing surface 314 adjacent to another main board body 31, each main cooling channel 313 is located adjacent One side of the pressing surface 314 respectively.

The inflow distribution unit 4 includes an inflow communication pipe 41 connected to the main flow inlets 311 of the main pressure plates 3, an air switching valve 42 arranged in the inflow communication pipe 41 and used to control the inflow of room temperature air, and an air switching valve 42 arranged in The inflow connecting pipe 41 is used to control the inflow of a first liquid into a first liquid switching valve 43, and a second liquid switching valve 44 is provided in the inflow connecting pipe 41 and used to control the inflow of a second liquid. The temperature of the second liquid is lower than the temperature of the first liquid. In this embodiment, the first liquid is room temperature water, and the second liquid is cooling water. In other embodiments, the first liquid and the second liquid can be cooling oil or other cooling oils. liquid.

The outflow distribution unit 5 is connected to the main pressure plates 3, and includes an outflow communication pipe 51 that communicates with the main flow outlets 312 of the main pressure plates 3, and an outflow communication pipe 51 arranged on the outflow communication pipe 51 and used to control the second liquid and The discharge switching valve 52 for discharging the first liquid, and an exhaust switching valve 53 provided in the outflow communication pipe 51 and used to control air discharge. In this embodiment, the second liquid flows into the outflow connecting pipe 51 and then is discharged. In other embodiments, the second liquid can also pass through a return pipe and a cooling system, and then connect to the second liquid switching valve 44, and The second liquid can be recycled, which is a conventional technology, so it will not be repeated here.

The auxiliary pressure plate 6 is arranged in parallel with the main pressure plates 3 and is located between the main pressure plates 3. The auxiliary pressure plate 6 includes an auxiliary plate body 61 that can be driven to move along the pressing axis Z and disposed on the base 2 , A plurality of auxiliary heating elements 62 passing through the auxiliary board main body 61, and an auxiliary temperature sensing element 63 arranged on the auxiliary board main body 61 and used to sense the temperature of the auxiliary board main body 61, the auxiliary board main body 61 has a continuous The secondary inflow port 611 through the inflow communicating pipe 41, a secondary outflow outlet 612 communicating with the outflow communicating pipe 51, and a secondary cooling passage 613 communicating with the secondary inflow inlet 611 and the secondary outflow outlet 612 and allowing fluid to pass through. It is worth mentioning that in other embodiments, the auxiliary pressing plates 6 may be omitted, and the main pressing plates 3 may be used for pressing directly.

The copper foils 7 are respectively located between the sub-board body 61 and the main board bodies 31 and are repeatedly folded to form a plurality of pressing spaces 71.

In this embodiment, the main heating elements 32 and the auxiliary heating elements 62 are electric heating pipes, but not limited to this. The main cooling passages 313 and the auxiliary cooling passages 613 are repeatedly bent to form a plurality of continuous The S type can also be other types evenly distributed on the main board main body 31 and the auxiliary board main body 61 in other embodiments.

Referring to Figure 1, Figure 2, and Figure 4, the present invention is used for the cooling method of a gas-liquid-cooled plate press.

In step 81, the gas-liquid-cooled plate press is prepared.

In step 82, according to the temperature sensed by the main temperature sensing element 33, when the temperature of the main body 31 is greater than a first set temperature, the air switching valve 42 is activated to make the main cooling channel 313 and the sub cooling channel 613 Introduce room temperature air.

When the temperature of the main body 31 is between the first set temperature and a second set temperature, the air switching valve 42 and the first liquid switching valve 43 are activated to cause the main cooling channel 313 and the sub cooling channel 613 to be introduced For mixing of room temperature air and the first liquid, the second set temperature is lower than the first set temperature.

When the temperature of the main body 31 is between the second set temperature and a third set temperature, the first liquid switching valve 43 is activated to cause the main cooling channel 313 and the sub cooling channel 613 to introduce the first liquid, the The third set temperature is lower than the second set temperature.

When the temperature of the main board body 31 is between the third set temperature and a fourth set temperature, the second liquid switching valve 44 is activated to cause the main cooling channel 313 to introduce the second liquid, and the fourth set temperature is lower than The third set temperature. In this embodiment, the first set temperature is 150 degrees Celsius, the second set temperature is 95 degrees Celsius, the third set temperature is 60 degrees Celsius, and the fourth set temperature is 30 degrees Celsius. In other embodiments, In this way, the first set temperature, the second set temperature, the third set temperature, and the fourth set temperature can also be adjusted according to requirements and the matched first liquid and the second liquid.

In step 83, the air switching valve 42 is activated to pass high-pressure air into the main cooling passage 313 to discharge the moisture in the main cooling passage 313.

During operation, a plurality of circuit boards to be pressed (not shown) are placed parallel to the base 2 in the pressing spaces 71, and then the main heating elements 32 and the auxiliary heating elements 62 are used to Wait for the main board main body 31 and the sub board main body 61 to heat up, and at the same time, the copper foil 7 will be used to make the circuit boards uniformly heated, and drive the main board main body 31 and the sub board main body 61 to approach each other, thereby Press the circuit boards together.

Therefore, compared with the prior art, when the temperature of the plate body is high, only the cooling fluid is used for cooling. Therefore, the cooling fluid boils as soon as it enters the cooling channel. The present invention controls the air switching valve 42, the The first liquid switching valve 43 and the second liquid switching valve 44, in combination with the main temperature sensing parts 33 and the auxiliary temperature sensing parts 63, can pass through different temperatures according to the temperature of the main board body 31 and the auxiliary board body 61 In addition, with the cooling method for the gas-liquid-cooled plate press, when the temperature of the main board body 31 and the auxiliary board body 61 is high, air is used to cool down to prevent liquid from entering the main cooling channel 313 Boiling achieves a safer use process. In addition, when the main board main body 31 and the sub board main body 61 have a high temperature, the room temperature air that does not require additional energy to cool is used to cool down, and when the main board main body 31 and When the temperature of the sub-board body 61 is low, the second liquid is used to cool down, and the consumption of the second liquid is reduced, thereby achieving the effect of reducing energy consumption.

It is worth mentioning that after the cooling is completed, by activating the air switching valve 42 to pass in high-pressure air, the water and moisture in the main cooling channel 313 and the sub cooling channel 613 can be discharged, thereby avoiding such When the temperature of the main board main body 31 and the auxiliary board main body 61 rises again, the water and water vapor in the main cooling channel 313 and the auxiliary cooling channel 613 boil and cause damage to the parts, achieving a safer use process.

In summary, the gas-liquid-cooled plate press of the present invention uses air to lower the temperature of the main board body first when the temperature of the main board body is relatively high, so as to prevent the liquid from boiling after entering the main cooling channel to achieve the use process Safer effect. When the temperature of the main board body 31 and the auxiliary board body 61 is relatively high, the room temperature air that does not require additional energy consumption is used to cool down, and when the temperature of the main board main body 31 and the auxiliary board body 61 is relatively high When the temperature is low, the second liquid is used to cool down, and the consumption of the second liquid is reduced to reduce energy consumption. After the cooling is completed, high-pressure air is introduced into the main cooling channels 313 and the sub-cooling The channel 613 is used to drain the remaining water and vapor, which can prevent the water and vapor in the main cooling channel 313 from boiling when the temperature of the main body 31 and the auxiliary board body 61 rises again, so as to reduce energy consumption and use The process is safer, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2‧‧‧Base 3‧‧‧Main pressure plate 31‧‧‧Main board body 311‧‧‧Main entrance 312‧‧‧Main exit 313‧‧‧Main cooling channel 314‧‧‧Pressing surface 32‧‧‧Main heating Piece 33‧‧‧Main temperature sensing piece 4‧‧‧Inflow distribution unit 41‧‧‧Inflow connecting pipe 42‧‧‧Air switching valve 43‧‧‧First liquid switching valve 44‧‧‧Second liquid switching valve 5‧ ‧‧Outflow distribution unit 51‧‧‧Outflow connecting pipe 52‧‧‧Drain switch valve 53‧‧‧Exhaust switch valve 6‧‧‧Sub pressure plate 61‧‧‧Sub plate body 611‧‧‧Sub flow inlet 612‧ ‧‧Sub-outlet 613‧‧‧Sub cooling channel 62‧‧‧Sub heating element 63‧‧‧Sub temperature sensing element 7‧‧‧Copper foil 71‧‧‧Pressing space 81~83‧‧‧Should be used for gas Steps of the cooling method of the liquid-cooled plate press Z‧‧‧Pressure axis

The other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: Figure 1 is a perspective view of an embodiment of the gas-liquid cooling plate press of the present invention; Figure 2 is the embodiment A schematic diagram; FIG. 3 is an incomplete cross-sectional schematic diagram taken along the line III-III of FIG. 2; and FIG. 4 is a flowchart of the cooling method for the gas-liquid-cooled plate press of the present invention.

3‧‧‧Main pressure plate

31‧‧‧Main board body

311‧‧‧Mainstream entrance

312‧‧‧Mainstream Export

313‧‧‧Main cooling channel

314‧‧‧Pressing surface

32‧‧‧Main heating element

51‧‧‧Outflow connecting pipe

52‧‧‧Drain switching valve

53‧‧‧Exhaust switch valve

6‧‧‧ Vice pressure plate

61‧‧‧Sub-board body

611‧‧‧ Secondary Inlet

612‧‧‧Auxiliary Outlet

33‧‧‧Main temperature sensing parts

4‧‧‧Inflow distribution unit

41‧‧‧Inflow connecting pipe

42‧‧‧Air switching valve

43‧‧‧First Liquid Switching Valve

44‧‧‧Second Liquid Switching Valve

5‧‧‧Outflow distribution unit

613‧‧‧Sub cooling channel

62‧‧‧Assistant heating element

63‧‧‧Associate temperature sensor

7‧‧‧Copper foil

71‧‧‧Pressing space

Z‧‧‧Pressure axial

Claims (11)

A gas-liquid-cooled plate pressing machine, comprising: a base; two main pressing plates, which are arranged at intervals along a pressurizing axis and parallel to the base; each main pressing board includes a drive and movable along the pressurizing axis. The main body of the base, a plurality of main heating elements passing through the main body, and a main temperature sensing element arranged on the main body and used to sense the temperature of the main body, each main body has a main inlet 1. A main flow outlet, and a main cooling channel connecting the main flow inlet and the main flow outlet and allowing fluid to pass through; at least one copper foil connected between the main board bodies and repeatedly folded to form a plurality of pressing spaces; and an inflow The distribution unit communicates with the main flow inlets of the main pressure plates and is used to control the inflow of air and liquid respectively. The gas-liquid-cooled plate press according to claim 1, wherein the inflow distribution unit includes an inflow communication pipe communicating with the main flow inlets of the main pressure plates, and an inflow communication pipe arranged in the inflow communication pipe and used to control air inflow The air switching valve of, and a first liquid switching valve arranged in the inflow communicating pipe and used to control the inflow of a first liquid. The gas-liquid-cooled plate press according to claim 2, wherein the inflow distribution unit further includes a second liquid switching valve provided in the inflow communication pipe and used to control the inflow of a second liquid, the second liquid The temperature is lower than the temperature of the first liquid. The gas-liquid-cooled plate press according to claim 3, further comprising an outflow distribution unit connected to the main press plates, and a secondary press plate arranged in parallel with the main press plates and located between the main press plates, the outflow distribution unit The unit includes an outflow communication pipe communicating with the main flow outlets of the main pressure plates, a discharge switching valve arranged in the outflow communication pipe and used to control the discharge of the first liquid and the second liquid, and a discharge switching valve arranged in the An exhaust switch valve that flows out of the communication pipe and is used to control the discharge of air. The auxiliary pressure plate includes an auxiliary plate body that can be driven to move along the pressurizing axis and disposed on the base, and a plurality of auxiliary plate bodies penetrated through the auxiliary plate body. Auxiliary heating element, and an auxiliary temperature sensing element arranged on the auxiliary plate body and used for sensing the temperature of the auxiliary plate body, the auxiliary plate body has an auxiliary inflow inlet communicating with the inflow communicating pipe, and an outlet communicating pipe The number of the copper foil is two, and the copper foil is located between the sub-board body and the main board body. A cooling method for a gas-liquid-cooled plate press, including the following steps: (A) Prepare a gas-liquid-cooled plate press, the gas-liquid-cooled plate press includes two main press plates, and an inflow distribution unit, each main press plate It includes a main board body, and a main temperature sensing component arranged on the main board body and used to sense the temperature of the main board body. The main board body has a main flow inlet, a main flow outlet, and a main flow inlet and a main flow outlet connected to the main body. The main cooling channel for fluid to pass through, the inflow distribution unit is connected to the main inlets of the main pressure plates and used to control the inflow of air and liquid respectively; and (B) according to the temperature sensed by the main temperature sensing element, when the main board When the temperature of the body is greater than a first set temperature, the main cooling channel is made to introduce air, When the temperature of the main board body is lower than the first set temperature, liquid, air or a mixture of liquid and air can be selectively introduced. The cooling method for a gas-liquid-cooled plate press according to claim 5, wherein, in the step (A), the inflow distribution unit includes an inflow communicating pipe that communicates with the main flow inlets of the main platens, An air switching valve provided in the inflow communication pipe and used to control the inflow of air, and a first liquid switching valve provided in the inflow communication pipe and used to control the inflow of a first liquid, in this step (B), according to When the temperature sensed by the main temperature sensing element is between the first set temperature and a second set temperature, the air switching valve and the first liquid switching valve are activated to introduce the main cooling channel For mixing of room temperature air and the first liquid, the second set temperature is lower than the first set temperature. The cooling method for a gas-liquid-cooled plate press according to claim 6, wherein in step (B), according to the temperature sensed by the main temperature sensing element, when the temperature of the main body is at the second setting When the temperature is between the temperature and a third set temperature, the first liquid switching valve is activated to cause the main cooling channel to introduce the first liquid, and the third set temperature is lower than the second set temperature. The cooling method for a gas-liquid-cooled plate press according to claim 7, wherein, in the step (A), the inflow distribution unit further includes an inflow connecting pipe and used to control the inflow of a second liquid The temperature of the second liquid is lower than the temperature of the first liquid. In step (B), according to the temperature sensed by the main temperature sensing element, when the temperature of the main body is at the third Between the set temperature and a fourth set temperature, the second liquid switching valve is activated to cause the main cooling channel to introduce the second liquid, the second liquid The temperature is lower than the temperature of the room temperature water, and the fourth set temperature is lower than the third set temperature. The cooling method for a gas-liquid-cooled plate press as described in claim 5 further includes a step (C) after the step (B), in which step (C), the air switching valve is turned on The main cooling channel is fed with high-pressure air to discharge the moisture in the main cooling channel. The cooling method for a gas-liquid-cooled plate press according to claim 5, wherein, in step (A), it further includes at least one copper connected between the main body bodies and repeatedly folded to form a plurality of pressing spaces Foil. The cooling method for a gas-liquid-cooled plate press according to claim 10, wherein, in the step (A), the gas-liquid-cooled plate press further includes an outflow distribution unit connected to the main platens, and a A secondary pressure plate arranged in parallel with the main pressure plates and located between the main pressure plates, the outflow distribution unit includes an outflow communication pipe that communicates with the main flow outlets of the main pressure plates, and an outflow communication pipe arranged on the main pressure plate and used for control The discharge switching valve for discharging the first liquid and the second liquid, and an exhaust switching valve arranged in the outflow communication pipe and used to control the discharge of air, the auxiliary pressure plate includes a drive that can be driven along the pressurizing axis The auxiliary board body movably arranged on the base, a plurality of auxiliary heating elements passing through the auxiliary board body, and an auxiliary temperature sensing element arranged on the auxiliary board body and used to sense the temperature of the auxiliary board body, the The secondary plate body has a secondary inlet communicating with the inflow communicating pipe, a secondary outlet communicating with the outlet communicating pipe, and a secondary cooling channel communicating with the secondary inlet and the secondary outlet and allowing fluid to pass through. The number of copper foils is two, and they are respectively located between the sub-board body and the main board bodies.

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