TWI716044B - Hot plate and pressing machine - Google Patents

Abstract

A hot plate includes a plate body, a first channel, and a plurality of heating tubes. The flow channel penetrates the inside of the plate and is used for the passage of fluid, and the flow has an inlet end communicating with the outside and used for fluid to enter, and an outlet end communicating with the outside and used for fluid to flow out. The heating tubes are inserted into the plate body and penetrated in the flow channel, and the heating tubes are used to heat the fluid in the flow channel. By passing the heating tubes in the flow channel, the flow rate of the fluid in the flow channel can be increased, and the heating tubes can directly contact the fluid, thereby improving the temperature uniformity of the plate body and speeding up the plate body The temperature rise and fall speed.

Description

Hot plate and pressing machine

The present invention relates to a hot plate and pressing machine, in particular to a hot plate and pressing machine that has good temperature uniformity and can quickly rise and fall in temperature.

A general printed circuit board (PCB) is a multilayer board made of insulating substrates and copper foils and other multilayer materials, and is made through high-temperature pressing and cooling flattening of pressing equipment. There is a type of laminating machine, which is mainly used for the laminating process of multilayer printed circuit boards. The laminating machine includes a frame, a plurality of hot plates arranged in the frame and spaced up and down, and a hot plate connected to the bottom. Pressure cylinder, a boiler used to heat the medium oil, and a pipeline unit connected to the boiler and connected to the hot plates, each hot plate has a flow path communicating with the pipeline unit, and the pressure cylinder is used to drive the When the hot plates move up and down to move closer or farther away from each other, the pipeline unit supplies medium oil to circulate between the boiler and the flow passages of the hot plates to indirectly heat the hot plates. During the pressing process, a plurality of cut and stacked multilayer printed circuit boards are respectively placed between the hot plates, and the pressure cylinder drives the hot plates close to each other, and the boiler and The pipeline unit transmits heat to the hot pressing plates, and the multilayer printed circuit boards can be heated and pressed together.

However, the disadvantage of this type of press is that when the hot plates are heated, the medium oil is heated by the boiler, and the heated medium oil flows through the corresponding flow channel to indirectly The corresponding hot plate is heated by the ground, and when the medium oil flows in the flow channel of each hot plate, it will continuously exchange heat with the hot plate, so that the medium oil has a higher temperature at the entrance of the flow channel. The low temperature at the outlet makes the temperature uniformity of each hot plate poor. In addition, the boiler needs to heat a large amount of medium oil to make the medium oil in the entire pipeline reach the required temperature to heat the hot plates, and when the kerosene flows in the pipeline unit, it will continue to heat up with the outside world. Exchange, and make the heating speed of the hot plates slow, and the cooling speed is also slow, thus affecting the quality of the circuit board.

Therefore, one of the objectives of the present invention is to provide a hot plate with good temperature uniformity and rapid temperature rise and fall.

Therefore, the hot plate of the present invention includes a plate body, a flow channel, and a plurality of heating tubes. The flow channel penetrates the inside of the plate and is used for the passage of fluid, and the flow has an inlet end communicating with the outside and used for fluid to enter, and an outlet end communicating with the outside and used for fluid to flow out. The heating tubes are inserted into the plate body and penetrated in the flow channel, and the heating tubes are used to heat the fluid in the flow channel.

Another object of the present invention is to provide a pressing machine with good temperature uniformity and rapid temperature rise and fall.

Therefore, the pressing machine of the present invention includes a frame unit, a plurality of hot plates, and a driving unit. The hot plates are spaced apart along the vertical direction, the uppermost hot plate is fixed on the rack unit, and the remaining hot plates are movably arranged on the rack in the vertical direction Unit, each hot plate includes a plate body, a flow passage through the inside of the plate body for the passage of fluid, and a plurality of heating tubes inserted in the plate body and penetrated in the flow passage, the The flow tool has an inlet end communicating with the outside and used for fluid to enter, and an outlet end communicating with the outside and used for fluid to flow out, and the heating tubes are used for heating the fluid in the flow channel. The driving unit is positioned relative to the rack unit, and is connected to the lowermost thermal plate, and can drive the thermal plates to approach and move away from each other along the vertical direction.

The effect of the present invention is that by piercing the heating tubes of the hot plate in the flow channel, the flow rate of the fluid in the flow channel can be increased, and the heating tubes can directly contact the fluid, thereby improving the plate body Temperature uniformity, and speed up the temperature rise and fall of the board, thereby improving the hot pressing quality of the circuit board.

1: rack unit

2: hot plate

21: Board body

211: first side

212: second side

213: third side

214: The fourth side

215: inner board surface

22: runner

223: Extension

224: connection segment

23: heating tube

3: drive unit

31: Hydraulic cylinder

32: drive rod

33: Push seat

D1: Upright direction

D2: The first horizontal direction

221: entry side

222: Exit

D3: second horizontal direction

9: Multilayer printed circuit board

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a front view diagram of an embodiment of the pressing machine of the present invention; FIG. 2 is one of the embodiments A three-dimensional schematic diagram of a hot plate; FIG. 3 is a partial cross-sectional diagram of the hot plate of this embodiment; and FIG. 4 is a partial cross-sectional diagram taken along the line IV-IV in FIG. 3.

Referring to FIG. 1, an embodiment of the pressing machine of the present invention includes a frame unit 1, a plurality of hot plates 2, and a driving unit 3.

The hot plates 2 are spaced apart along the vertical direction D1, the uppermost hot plate 2 is fixed on the rack unit 1, and the remaining hot plates 2 are movably disposed on the rack unit 1 along the vertical direction D1.

Referring to Figures 2, 3 and 4, each hot plate 2 includes a plate body 21, a flow channel 22 that penetrates the plate body 21 and is used for fluid to pass through, and is inserted into the plate body 21 and A plurality of heating tubes 23 pierce through the flow channel 22. The board 21 has a first side surface 211, a second side surface 212 opposite to the first side surface 211 along a first horizontal direction D2, and a third side surface 213 connecting the first side surface 211 and the second side surface 212 A fourth side surface 214 connected to the first side surface 211 and the second side surface 212 and opposite to the third side surface 213 along a second horizontal direction D3, and an inner plate surface 215 surrounding and defining the flow channel 22. The first horizontal direction D2 and the second horizontal direction D3 are perpendicular to the vertical direction D1.

The cross section of the flow channel 22 perpendicular to the vertical direction D1 is in a plurality of continuous S-shapes (see FIG. 3), and the cross section of the flow channel 22 perpendicular to the fluid flow direction is circular. The flow channel 22 has an inlet end 221 connected to the outside and used for fluid to enter, an outlet end 222 connected to the outside and used for fluid to flow out, a plurality of extension sections 223 extending along the first horizontal direction D2, and a plurality of connections The connecting section 224 of two adjacent extension sections 223. The inlet end 221 and the outlet end 222 are opened on the first side surface 211 of the plate body 21 and are respectively adjacent to the third side surface 213 and the fourth side surface 214. The two extension sections 223 farthest apart are connected to the inlet end 221 and the outlet end 222 respectively.

The heating tubes 23 penetrate into the respective flow channels 22 from the second side surface 212 of the plate body 21, and respectively penetrate the extension sections 223 of the flow channel 22 along the first horizontal direction D2, and are used together To heat the fluid in the flow channel 22. The cross section of each heating tube 23 perpendicular to the first horizontal direction D2 is circular, and is arranged concentrically with the respective extension section 223 and spaced apart from the inner plate surface 215. The heating tubes 23 are electric heating rods.

In this embodiment, the flow passages 22 of the hot plates 2 are used to communicate with an external pipeline (not shown in the figure). The external pipeline includes a pump and a storage tank that can store fluid so that fluid can flow in the The external pipelines and the flow channels 22 of the hot plates circulate in the flow.

Referring to FIG. 1, the driving unit 3 is positioned relative to the rack unit 1 and is connected to the lowermost hot plate 2, and can drive the hot plates 2 to approach and move away from each other along the vertical direction D1. In this embodiment, the drive unit 3 has a hydraulic cylinder 31, a drive rod 32 that is connected to the hydraulic cylinder 31 upright and can move up and down, and a drive rod 32 arranged on top of the drive rod 32 and used to push against At the bottom of the push seat 33 of the hot plate 2, the hydraulic cylinder 31 can be driven by a pump (not shown) so that the drive rod 32 drives the push seat 33 to move up and down, so that the hot plates 2 move along the The upright directions D1 approach and move away from each other, but not limited to this.

When performing the hot pressing of a plurality of multilayer printed circuit boards 9, the multilayer printed circuit boards 9 are respectively placed between the hot plates 2, and the driving unit 3 drives the hot plates 2 to approach each other, which can be aligned The multilayer printed circuit boards 9 are pressurized, and each hot plate 2 can be heated by its respective heating rod 23 to heat the multilayer printed circuit boards 9.

3 and 4, it is explained in detail that each hot plate 2 is heating up At this time, the external pipeline can continuously input steam, hot water or hot kerosene into the flow channel 22 from the inlet end 221 of each hot plate 2 and flow out of the flow channel 22 from the outlet end 222, and each The heating pipes 23 can heat the fluid flowing through the flow channel 22 to indirectly heat the respective plates 21. Since the heating pipes 23 pass through the flow channel 22, the cross-sectional area of the flow channel 22 for fluid to pass is reduced, so that the same flow rate of fluid passing through the flow channel 22 will increase the flow rate, thereby increasing the flow rate. The temperature uniformity of the board body 21 allows each part of the multilayer printed circuit board 9 to be uniformly heated.

In addition, since the heating pipes 23 of each hot plate 2 are inserted in the flow channel 22, the heating rate of the plate body 21 can be increased, and the heating pipes 23 are spaced from the plate body 21 to avoid the The plate body 21 generates local high temperature. When the temperature is lowered, the external pipeline can be used to input the cooling fluid into each hot plate 2. Since the heating tubes 23 are inserted in the flow channel 22, the heating tubes 23 can directly contact the fluid, and The flow rate of the fluid is fast, so the cooling speed of the heating tubes 23 and the plate 21 can be accelerated. In this embodiment, the flow channel 22 of each hot plate 2 is a continuous S-shape, and the heating pipes 23 respectively pass through the extension sections 223 of the flow channel 22 to further enhance the plate body The temperature uniformity of 21, and increase the temperature rise and fall speed of the plate body 21.

In addition, since the heating tubes 23 of each hot plate 2 are inserted in the flow channel 22, the press does not need an external boiler to heat the fluid, which can save boiler installation and maintenance costs, and save overall equipment The total amount of fluid required, due to the decrease in the total amount of fluid in the overall equipment, can also increase the rate of heating.

It is worth mentioning that in this embodiment, the hot plates 2 can also be independently manufactured and sold, and can be assembled by manufacturers in a general pressing machine, and can achieve the same purpose and effect as this embodiment.

In summary, the hot plate and pressing machine of the present invention can improve the temperature uniformity and temperature rise and fall speed of the plate body 21 by passing the heating tubes 23 of each hot plate 2 through the flow channel 22 Therefore, the quality of the multilayer printed circuit boards 9 can be improved, so the purpose of the invention can be achieved.

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.

21: Board body

211: first side

212: second side

213: third side

214: The fourth side

22: runner

221: entry side

222: Exit

223: Extension

224: connection segment

23: heating tube

D2: The first horizontal direction

D3: second horizontal direction

Claims (10)

A hot plate that contains: A board A flow channel, which penetrates the inside of the plate and is used for the passage of fluid, and the fluid has an inlet end communicating with the outside and used for fluid to enter, and an outlet end communicating with the outside and used for fluid to flow out; and A plurality of heating tubes are inserted in the plate body and penetrated in the flow channel, and the heating tubes are used for heating the fluid in the flow channel. The hot plate according to claim 1, wherein the plate body includes a first side surface, a second side surface opposite to the first side surface, a third side surface connecting the first side surface and the second side surface, and A fourth side surface connected to the first side surface and the second side surface and opposite to the third side surface, the inlet end and the outlet end of the flow channel are opened on the first side surface and are respectively adjacent to the third side surface and the The fourth side. The hot plate according to claim 2, wherein the heating tubes penetrate into the flow channel from the second side surface. The hot plate according to claim 1, wherein the plate body includes a first side surface, a second side surface opposite to the first side surface along a first horizontal direction, and a connection between the first side surface and the second side surface The third side surface, and a fourth side surface that connects the first side surface and the second side surface and is opposite to the third side surface along a second horizontal direction, defines a vertical direction perpendicular to the first horizontal direction and the second horizontal direction In the upright direction, the cross section of the flow channel perpendicular to the upright direction is in a plurality of continuous S shapes, and the flow channel further includes a plurality of extension sections extending along the first horizontal direction, and a plurality of connecting sections connecting two adjacent extension sections , The two extension sections farthest apart are respectively connected with the inlet end and the outlet end. The hot plate according to claim 4, wherein the heating tubes respectively pass through the extension sections of the flow channel along the first horizontal direction. The hot plate according to claim 5, wherein the cross section of the flow channel perpendicular to the fluid flow direction is circular. The hot plate according to claim 6, wherein the plate body further comprises an inner plate surface surrounding and defining the flow channel, and each heating tube is spaced from the inner plate surface. The hot plate according to claim 7, wherein the cross section of each heating tube perpendicular to the first horizontal direction is circular and is arranged concentrically with the respective extension section. The hot plate according to claim 1, wherein the heating tubes are electric heating rods. A pressing machine including: A rack unit; A plurality of hot plates are spaced apart in a vertical direction, the uppermost hot plate is fixed to the rack unit, and the other hot plates are movably arranged in the rack unit along the vertical direction, and each hot plate includes a plate body , A flow channel through the inside of the plate for fluid to pass, and a plurality of heating pipes inserted in the plate and through the flow channel, the flow prop has a communicating outside and used for The inlet end where the fluid enters, and an outlet end that communicates with the outside and is used for the fluid to flow out, the heating tubes are used to heat the fluid in the flow channel; and A driving unit is positioned relative to the rack unit, and is connected to the lowermost thermal plate, and can drive the thermal plates to approach and move away from each other along the vertical direction.

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