TWI710297B - Plate press - Google Patents

Abstract

A plate pressing machine includes a main heater, two auxiliary heaters, a main heating unit, and two auxiliary heating units. The main heater includes an electric heating sheet, and the auxiliary heaters are respectively arranged on opposite sides of the electric heating sheet. On the other hand, each auxiliary heater includes an electric heating module, the main heating unit is electrically connected to a first power line, a second power line, a third power line and the electric heating sheet, and each auxiliary heating unit includes an electrical connection to the first The power line, the second power line, the third power line, and the respective first solid-state electrical relay modules of the electric heating module, each first solid-state electrical relay module has three separate modules for controlling the first power line, the second Whether the power line and the third power line are connected to the respective electric heating module can be used to achieve the effect of uniform heating of the plurality of circuit boards and reduce the production and use costs.

Description

Pressing machine

The invention relates to a plate pressing machine, in particular to a plate pressing machine that can save production costs.

A plate pressing machine as disclosed in the Republic of China Patent Certificate No. I568325 patent is used to produce multiple circuit boards. The plate pressing machine includes a repetitive bending extension to carry the circuit boards and can be energized and heated to heat the circuit boards. Heating copper plates, two heating plates respectively arranged and electrically connected to the opposite sides of the copper plate and capable of being electrically heated, one main heating unit electrically connected to the copper plate to energize the copper plate, and two heating plates respectively electrically connected to the heating plates Sub-heating unit for heating these heating plates.

The main heating unit includes a main transformer that is electrically connected to a three-phase power source to convert the voltage that can be provided to the copper plate, and each auxiliary heating unit includes a three-phase power source that is electrically connected to the three-phase power source to be converted to the respective heating plate. Voltage sub-transformer.

When in use, the copper plate is energized to generate heat to heat the circuit boards, and the two sides of the copper plate with lower heat are supplemented by the heat generated by the heating plates when the heating plates are energized, so that the circuit boards can be evenly heated.

However, due to the high cost of the main transformer and the secondary transformers, the overall manufacturing cost cannot be reduced. In addition, since the transformer has a low conversion efficiency, it will also consume energy during use.

Therefore, the object of the present invention is to provide a plate press that overcomes at least one of the disadvantages of the prior art.

Therefore, the plate pressing machine of the present invention is applied to electrically connect a power module capable of outputting a three-phase power supply, and can be used to heat a plurality of circuit boards. The power module includes a first power line corresponding to the three-phase power supply and a A second power line and a third power line. The press machine includes a main heater, two auxiliary heaters, a main heating unit, and two auxiliary heating units.

The main heater includes an electric heating sheet that extends along an extension direction and can be energized to generate heat. The heating sheet is repeatedly bent along a folding direction perpendicular to the extension direction to define a plurality of heating elements for accommodating the circuit boards. Zone, the auxiliary heaters are respectively arranged on two opposite sides of the electric heating sheet along the extending direction, each auxiliary heater includes an electric heating module that can be energized to generate heat, and the main heating unit is electrically connected to the first power line and the The second electric power line, the third electric power line and the electric heating sheet, each auxiliary heating unit includes a first solid-state electric relay module electrically connected to the first electric power line, the second electric power line, the third electric power line and the respective electric heating modules Group, each first solid-state electrical relay module has three switches for controlling whether the first power line, the second power line, and the third power line are connected to the respective electric heating module.

The effect of the present invention is that by arranging the electric heating sheet, the electric heating modules and the first solid-state electrolytic modules, the effect of uniformly heating the circuit boards can be achieved, and the production and use costs can be reduced.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

1 and 2, a first embodiment of the plate pressing machine of the present invention is applied to electrically connect a power module 8 capable of outputting a three-phase power, and can be used to heat a plurality of circuit boards 91. The power module 8 It includes a first power line L1, a second power line L2, and a third power line L3 corresponding to the three-phase power supply.

The press machine includes a main heater 2, two auxiliary heaters 3, a main heating unit 4, and two auxiliary heating units 5.

The main heater 2 includes an electric heating plate 21 that extends along an extension direction X and can be energized to generate heat, and two opposite ends of the electric heating plate 21 along the extension direction X and electrically connected to the heating plate 21 and the main The heating unit 4 is a conductive plate 22 that conducts electricity. The electric heating sheet 21 is repeatedly bent along a folding direction Y perpendicular to the extension direction X to define a plurality of heating regions 211 respectively for accommodating the circuit boards 91. In this embodiment, the electric heating sheet 21 is made of copper material, but it is not limited to this, and it can also be made of other materials that can be energized and generate heat. The circuit boards 91 are connected to a plurality of insulating and heat conducting plates along the extending direction X 92 are alternately arranged at intervals, and each pair is separated by the electric heating sheet 21.

The sub-heaters 3 are respectively arranged on the side of the conductive plates 22 opposite to the electric heating sheet 21, and each sub-heater 3 includes an electric heating module 31 that can be energized to generate heat.

Each electric heating module 31 has three electric heating elements 32 that can be energized to generate heat, and one end of the electric heating elements 32 is electrically connected to each other. In this embodiment, the electric heating elements 32 are thermal resistance wires, but they are not limited to this, and can also be other elements that can be energized and generate heat.

The main heating unit 4 is electrically connected to the first power line L1, the second power line L2, the third power line L3, and the conductive plates 22, and can connect the first power line L1, the second power line L2, and the third power line The three-phase power input by L3 is converted and output to the conductive plates 22 and then provided to the electric heating sheet 21. In this embodiment, the physical wires output from the main heating unit 4 to the conductive plates 22 respectively pass through the electric heating modules 31 to electrically connect the conductive plates 22, but it is not limited to this, and can also be Directly and electrically connected to the conductive plates 22.

The main heating unit 4 includes a phase control module 41 that is electrically connected to the power module 8 to adjust the phase of the three-phase power, and a phase control module 41 that is electrically connected to the phase control module 41 to voltage the three-phase power source whose phase has been adjusted. The modulated three-phase transformer module 42, and a rectifier module 43 electrically connected to the three-phase transformer module 42 and the conductive plates 22, the rectifier module 43 modulates the three-phase voltage After being rectified into a positive electrode 431 and a negative electrode 432, the positive electrode 431 and the negative electrode 432 are respectively output to the conductive plates 22 and then provided to the electric heating sheet 21. In this embodiment, the three-phase transformer module 42 is a three-phase transformer.

Each auxiliary heating unit 5 includes a first solid-state electrical relay module 51 electrically connected to the first power line L1, the second power line L2, the third power line L3, and the respective electric heating module 31. Each first solid The relay module 51 has three switch switches 511 for controlling whether the first power line L1, the second power line L2, and the third power line L3 are connected to the respective electric heating modules 31.

One end of the switching switches 511 of each first solid-state relay module 51 is electrically connected between the main heating unit 4 and the power module 8, and the other end of the switching switches 511 is electrically connected to One end of the heating elements 32 that are not electrically connected to each other.

When in use, after the three-phase power is converted by the main heating unit 4, the conductive plates 22 can be powered, and the electric heating sheet 21 can be energized to generate heat to heat the circuit boards 91.

At the same time, the auxiliary heating units 5 can also output the three-phase power to the electric heating elements 32 through the switching switches 511 through the switching of the first solid-state electrolytic module 51, and pass the electric heating elements 32 The heat generated by this can heat the circuit boards 91 on two opposite sides along the extension direction X, so that all the circuit boards 91 can be heated evenly.

Since the first solid-state electrolytic modules 51 are mature components on the market, the price is low, and the three sets of voltages separated from the three-phase power supply by each first solid-state electrolytic module 51 can be two by two. The electric heating elements 32 are supplied in pairs, so there is no need to use a relatively expensive transformer for voltage adjustment as in the prior art. The press plate machine can significantly reduce the production cost, and because the first solid-state electrochemical modules The group 51 is only a switching element, so it consumes less power when in use, and can avoid power loss caused by the use of a transformer, so it can greatly save energy.

In addition, since the electric heating elements 32 of each electric heating module 31 can achieve the effect of three-phase load current balance, the temperature of the three-phase transformer module 42 of the main heating unit 4 can be lowered and the power loss can be reduced. .

Referring to Figures 3 and 4, a second embodiment of the present invention is similar to the first embodiment, and the difference lies in:

The press machine also includes a harmonic suppression unit electrically connected between the main heating unit 4 and the power supply module 8 to suppress high frequency harmonics on the first power line L1, the second power line L2, and the third power line L3 6, and a work factor improvement unit 7.

The harmonic suppression unit 6 has three chokes 61. One ends of the chokes 61 are electrically connected to the first power line L1, the second power line L2, and the third power line L3, respectively. The chokes 61 The other end is electrically connected to the main heating unit 4.

The power factor improvement unit 7 includes an auxiliary capacitor module 71 and a second solid-state electrical relay module 72 electrically connected between the harmonic suppression unit 6 and the auxiliary capacitor module 71.

The auxiliary capacitor module 71 has three capacitors 711, and the capacitors 711 are electrically connected to each other in pairs. The second solid-state relay module 72 has three separate capacitors for controlling whether the chokes 61 are connected to the auxiliary capacitor module 71. The switching switches 721 are turned on. One ends of the switching switches 721 are respectively electrically connected to the chokes 61 and one end of the main heating unit 4, and the other ends of the switching switches 721 are respectively electrically connected to the capacitors 711 Adjacent in pairs.

Each electric heating module 31 has three electric heating elements 32 that can be energized to generate heat. The electric heating elements 32 are electrically connected to each other in pairs, and one end of the switching switches 511 of each first solid-state electrical relay module 51 is electrically connected respectively Between the main heating unit 4 and the harmonic suppression unit 6, the other ends of the switch switches 511 are electrically connected to the electric heating elements 32 adjacent to each other.

When in use, the three sets of voltages separated by the three-phase power supply through each first solid-state electrolytic module 51 can also supply power to the electric heating elements 32 in pairs, so it does not need to be as in the prior art. A relatively expensive transformer must be used for voltage modulation, so the plate press machine can significantly reduce the manufacturing cost.

In addition, by providing the harmonic suppression unit 6, the high-frequency harmonics generated by the phase control module 41 can be suppressed, and other electronic components are prevented from being damaged by the influence of high-frequency harmonics and the adverse effects of reducing power factors are avoided. , And setting the power factor improvement unit 7 can also adjust whether the capacitors 711 are connected to the three-phase power source by switching the switch switches 721 of the second solid-state electrochemical module 72, thereby improving the power factor to achieve Energy saving effect.

In this way, the second embodiment can also achieve the same purpose and effect as the above-mentioned first embodiment.

Referring to FIG. 5, a third embodiment of the present invention is similar to the first embodiment, and the difference lies in:

The press machine includes two main heaters 2, the electric heating sheets 21 of the main heaters 2 jointly define the heating areas 211, and the circuit boards 91 are alternately spaced from a plurality of insulating and heat conducting plates 92 along the extending direction X It is set, and the two are separated by one of the electric heating fins 21.

In this way, the third embodiment can also achieve the same purpose and effect as the above-mentioned first embodiment.

In summary, by arranging the electric heating sheet 21, the electric heating modules 31 and the first solid-state electrolytic modules 51, the effect of uniform heating of the circuit boards 91 can be achieved, and the production and use can be reduced. Cost, so it can indeed achieve the purpose of cost 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········Main heater 21······· Electric heating film 211····· Heating zone 22······· conductive plate 3········ Sub-heater 31······· Electric heating module 32······· Electric heating element 4········Main heating unit 41·······Phase Control Module 42·······Three-phase transformer module 43······· Rectifier Module 431····· Positive electrode 432····· Negative electrode 5········ Sub-heating unit 51······· The first solid state electrical relay module 511····· Toggle switch 6·········Harmonic suppression unit 61······· Choke 7········ Work Factor Improvement Unit 71······· Auxiliary Capacitor Module 711····· Capacitor 72······· The second solid state electrical relay module 721····· Toggle switch 8········ Power Module 91······· Circuit Board 92······· Insulating heat conducting plate L1······ The first power line L2······ Second Power Line L3······ Third Power Line X······· Extension direction Y······· Folding direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1 is a system schematic diagram of a first embodiment of the plate pressing machine of the present invention; Fig. 2 is a schematic circuit diagram of the first embodiment; 3 is a schematic diagram of a system of a second embodiment of the plate pressing machine of the present invention; Fig. 4 is a schematic circuit diagram of the second embodiment; and Fig. 5 is a system diagram of a third embodiment of the plate pressing machine of the present invention.

22······· conductive plate 31······· Electric heating module 32······· Electric heating element 4········Main heating unit 41·······Phase Control Module 42·······Three-phase transformer module 43······· Rectifier Module 431····· Positive electrode 432····· Negative electrode 5········ Sub-heating unit 51······· The first solid state electrical relay module 511····· Toggle switch 8········ Power Module L1······ The first power line L2······ Second Power Line L3······ Third Power Line

Claims (9)

A plate pressing machine is used for electrically connecting a power supply module capable of outputting a three-phase power supply, and can be used to heat a plurality of circuit boards. The power supply module includes a first power line and a second power line corresponding to the three-phase power supply And a third power line, the press machine includes: A main heater includes an electric heating sheet that extends along an extension direction and can be energized to generate heat. The heating sheet is repeatedly bent along a folding direction perpendicular to the extension direction to define a plurality of circuits for accommodating the circuit boards. Heating zone Two auxiliary heaters are respectively arranged on two opposite sides of the electric heating sheet along the extending direction, and each auxiliary heater includes an electric heating module that can be energized to generate heat; A main heating unit electrically connected to the first power line, the second power line, the third power line and the electric heating sheet; and Two auxiliary heating units, each auxiliary heating unit includes a first solid-state electrical relay module electrically connected to the first power line, the second power line, the third power line and the respective electric heating module, each of the first solid-state electrical The station module has three switches for controlling whether the first power line, the second power line, and the third power line are connected to the respective electric heating modules. The plate pressing machine according to claim 1, further comprising an electrical connection between the main heating unit and the power supply module to suppress harmonics of high frequency harmonics on the first power line, the second power line, and the third power line Suppression unit. The plate pressing machine according to claim 2, wherein the harmonic suppression unit has three chokes, and one ends of the chokes are electrically connected to the first power line, the second power line, and the third power line, respectively, The other ends of the chokes are electrically connected to the main heating unit. The platen press according to claim 3, further comprising a power factor improvement unit, the power factor improvement unit includes an auxiliary capacitor module, and a second solid state electrically connected between the harmonic suppression unit and the auxiliary capacitor module The electrical relay module, the auxiliary capacitor module has three capacitors, the capacitors are electrically connected to each other, and the second solid-state electrical relay module has three separate modules for controlling whether the chokes are connected to the auxiliary capacitor module One ends of the changeover switches are electrically connected to one end of the choke coil and the main heating unit, and the other ends of the changeover switches are electrically connected to the adjacent capacitors. The plate pressing machine according to claim 1, wherein each electric heating module has three electric heating elements that can be energized to generate heat, and one ends of the electric heating elements are electrically connected to each other, and the respective first solid-state electrical relay modules One ends of the switching switches are electrically connected between the main heating unit and the power module, and the other ends of the switching switches are electrically connected to the ends of the electric heating elements that are not electrically connected to each other. The plate pressing machine according to claim 1, wherein each electric heating module has three electric heating elements that can be energized to generate heat, and the electric heating elements are electrically connected to each other in pairs, and the switching of each first solid-state electrical relay module One end of the switch is electrically connected between the main heating unit and the power supply module, and the other end of the switch is electrically connected to the adjacent places of the heating elements. The plate press according to claim 1, wherein the main heating unit includes a phase control module electrically connected to the power module to adjust the phase of the three-phase power source, and a phase control module electrically connected to the phase control module to adjust the phase A three-phase transformer module for voltage modulation of the three-phase power supply, and a rectifier module electrically connected to the three-phase transformer module and the electric heating plate. The rectifier module modulates the three-phase transformer module after voltage modulation. After the phase voltage is rectified into a positive electrode and a negative electrode, the positive electrode and the negative electrode are respectively output to the electric heating sheet. The plate pressing machine according to claim 1, wherein the main heater further includes two conductive plates connected to two opposite ends of the electric heating sheet along the extending direction and electrically connected to the electric heating sheet and the main heating unit for conducting conduction. The platen press according to claim 1, further comprising another main heater, and the electric heating sheets of the main heater jointly define the heating zones.

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