PCB hot-pressing device

Abstract

The utility model relates to a PCB (printed circuit board) hot-pressing device which comprises a hot-pressing plate, an oil groove is arranged in the hot-pressing plate, two ends of the oil groove are respectively provided with an oil conduit, the oil conduit comprises an oil inlet pipe and an oil outlet pipe, the outside of the oil conduit is coated with a thermal insulation material, an oil temperature sensor is arranged on the hot-pressing plate, and an adjusting valve is arranged on the oil outlet pipe. The oil inlet pipe and the oil outlet pipe are connected with the conduction oil heater. According to the PCB hot-pressing device, the temperature reduction caused by the influence of air is reduced, the power consumption is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board production equipment, in particular to a PCB board hot pressing device. Background Art

[0002] PCB is the provider of electrical connection for electronic components. The main advantage of using PCB is that it greatly reduces wiring and assembly errors, improves automation level and production labor rate. Lamination is one of the important steps in the production and processing of PCB. The lamination of the inner layer circuit board of PCB is to heat the semi-cured sheet (such as epoxy resin material) and apply a certain pressure to melt and solidify the semi-cured sheet so that the PP film and aluminum foil are respectively pressed on both sides of the inner layer circuit board to form a multi-layer circuit board.

[0003] The hot press is a special pressing equipment for PCB board pressing. The temperature of the pressing plate of the hot press is transmitted by the heat transfer oil through the pipeline, and the pipeline is in contact with the air. The temperature required for PCB board pressing is 150℃. Since the pipeline is in contact with the air, the temperature of the heat transfer oil will be lost during the transmission process. In order to ensure the required temperature for pressing, the heat transfer oil heater needs to consume more electricity to increase the oil temperature. In addition, the air is greatly affected by the ambient temperature. In order to ensure the appropriate temperature of the pressing plate under different environmental conditions, the device needs to be repeatedly debugged, which affects the work efficiency. Utility Model Content

[0004] The utility model aims to design a PCB board hot pressing device, so as to reduce the temperature drop caused by the influence of air, reduce power consumption and improve work efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A PCB board hot pressing device comprises a hot pressing plate, an oil tank is arranged in the hot pressing plate, oil guide pipes are arranged at both ends of the oil tank, the oil guide pipes comprise an oil inlet pipe and an oil outlet pipe, the outside of the oil guide pipes is coated with a heat preservation material, an oil temperature sensor is arranged on the hot pressing plate, a regulating valve is arranged on the oil outlet pipe, and the oil inlet pipe and the oil outlet pipe are connected to a heat transfer oil heater.

[0007] Furthermore, in the above-mentioned PCB board hot pressing device, the oil groove is provided with multiple channels, and the two ends of each of the oil grooves are respectively connected to the oil inlet pipe and the oil outlet pipe.

[0008] Furthermore, in the above-mentioned PCB board hot pressing device, the oil groove is serpentine.

[0009] Furthermore, the above-mentioned PCB board hot pressing device also includes a frame, the frame includes a base, the base is fixedly connected with a fixed column, the upper end of the fixed column is fixedly connected with an upper pressure plate, the middle of the fixed column is slidably connected with a lower pressure plate, the hot pressing plate is located between the upper pressure plate and the lower pressure plate and is slidably connected to the fixed column, and the lower pressure plate is fixedly connected to the piston rod of the hydraulic cylinder.

[0010] Furthermore, in the above-mentioned PCB board hot pressing device, a plurality of hot pressing plates are provided between the upper pressing plate and the lower pressing plate.

[0011] Furthermore, in the above-mentioned PCB board hot pressing device, frame plates are provided on both sides of the frame, and positioning protrusions are respectively provided at both ends of the multiple hot pressing plates, the length of the positioning protrusion of the hot pressing plate located below is smaller than the length of the positioning protrusion of the hot pressing plate located above, and the frame plates are provided with step grooves, which cooperate with the positioning protrusions of the multiple hot pressing plates.

[0012] Furthermore, in the above-mentioned PCB board hot pressing device, a connecting block is provided between the lower pressing plate and the piston rod, the upper end of the connecting block cooperates with the bottom surface of the lower pressing plate, and the lower end of the connecting block cooperates with the top surface of the piston rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a PCB board hot pressing device, which overlaps PP film, aluminum foil and PCB board and puts them into the hot pressing cavity formed between two adjacent hot pressing plates, and then passes heat transfer oil into the oil tank of the hot pressing plate through the oil inlet pipe, the oil temperature sensor detects the oil temperature in the oil tank, the regulating valve adjusts the transmission speed of the heat transfer oil, the insulation material coated on the outside of the oil transfer pipe reduces the temperature drop caused by the influence of air, and compared with the absence of insulation material, the insulation material reduces the loss of heat transfer oil temperature during the transmission process, so the heat transfer oil heater consumes less electricity to heat the heat transfer oil to ensure the pressing temperature, the oil temperature sensor allows people to know the temperature in the hot pressing plate at any time, so as to facilitate the debugging of the output power of the heat transfer oil heater, reduce the number of debugging times, and improve work efficiency. By controlling the regulating valve, the heat transfer oil with inappropriate initial temperature can be quickly removed from the oil tank for replacement, and when the temperature is appropriate, the transmission speed can be slowed down, heat exchange can be sufficient, power consumption can be reduced, and the impact of environmental changes can be resisted. The PCB board hot pressing device can reduce the temperature drop caused by the influence of air, reduce power consumption and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a cross-sectional view of the frame plate and the hot pressing plate of the utility model;

[0018] Figure 4 It is a cross-sectional view of the hot pressing plate of the utility model;

[0019] The names of the components marked in the figure are as follows:

[0020] 1. Base; 2. Hydraulic cylinder; 21. Connecting block; 3. Lower pressure plate; 4. Fixed column; 5. Hot pressing plate; 501. Sliding block; 502. Positioning protrusion; 503. Oil tank; 51. Oil guide pipe; 52. Oil temperature sensor; 6. Upper pressure plate; 7. Frame plate. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Example: Please refer to Figure 1-4 , a PCB board hot pressing device, including a frame and a hot pressing plate 5.

[0023] The frame includes a base 1, the upper end of the base 1 is fixedly connected with four fixed columns 4, the upper end of the fixed columns 4 is fixedly connected with an upper pressure plate 6, the middle of the fixed columns 4 is slidably connected with a lower pressure plate 3, the lower pressure plate 3 is fixedly connected with the piston rod of the hydraulic cylinder 2, and the hydraulic cylinder 2 and the base 1 are fixedly connected on the ground or a workbench. The hydraulic cylinder 2 can drive the piston rod to extend and retract to control the lower pressure plate 3 to move up and down. A connecting block 21 is provided between the lower pressure plate 3 and the piston rod, the upper end of the connecting block 21 matches the shape of the bottom surface of the lower pressure plate 3, and the lower end of the connecting block 21 matches the shape of the top surface of the piston rod, so that the pressure applied by the piston rod can be transmitted to all parts of the lower pressure plate 3 more evenly, rather than only acting on the middle of the lower pressure plate 3, which can prevent the lower pressure plate 3 from being damaged due to long-term local force. The hot pressing plate 5 is located between the upper pressing plate 6 and the lower pressing plate 3 and is slidably connected to the fixed column 4. Slide blocks 501 are respectively provided at the four corners of the hot pressing plate 5. The fixed column 4 is provided with a slide groove that cooperates with the slide block 501. Multiple hot pressing plates 5 are provided between the upper pressing plate 6 and the lower pressing plate 3. A hot pressing cavity can be formed between two adjacent hot pressing plates 5 for pressing a PCB board. Multiple hot pressing plates 5 form multiple hot pressing cavities, so that the pressing operation of multiple PCB boards can be realized at one time.

[0024] An oil groove 503 is provided in the hot pressing plate 5. The oil groove 503 is serpentine. The serpentine shape increases the residence time of the heat transfer oil in the hot pressing plate 5 and the heat exchange area generated, which is beneficial to heat exchange. Oil guide pipes 51 are provided at both ends of the oil groove 503. The oil guide pipes 51 include an oil inlet pipe and an oil outlet pipe. The oil groove 503 is provided with multiple channels, which improves the heat exchange efficiency. The two ends of each oil groove 503 are connected to an oil inlet pipe and an oil outlet pipe. The outside of the oil guide pipe 51 is coated with a heat preservation material, which is not shown in the figure. The heat preservation material can use aluminum silicate wool. An oil temperature sensor 52 is provided on the hot pressing plate 5. The oil temperature sensor 52 is used to detect the oil temperature in the oil groove 503. The temperature required for the PCB board pressing is 150°C. A regulating valve is provided on the oil outlet pipe to adjust the transmission speed of the heat transfer oil. The oil inlet pipe and the oil outlet pipe are connected to a thermal oil heater, which is used to provide heat to the thermal oil. The oil inlet pipe, the oil outlet pipe and the thermal oil heater form a circulation route for the thermal oil.

[0025] A frame plate 7 is provided on both sides of the frame, and the frame plate 7 is fixedly connected to the base 1. Positioning protrusions 502 are provided at both ends of each hot pressing plate 5. The length of the positioning protrusion 502 of the hot pressing plate 5 located at the bottom is smaller than the length of the positioning protrusion 502 of the adjacent hot pressing plate 5 located at the top, so that the lengths of the positioning protrusions 502 of multiple hot pressing plates 5 increase from bottom to top. The frame plate 7 is provided with a stepped groove that matches the positioning protrusions 502 of each hot pressing plate 5. The stepped groove on the frame plate 7 locates the lowest position of each hot pressing plate 5. When the pressing is completed, the lower pressing plate 3 moves down, and each hot pressing plate 5 moves down, and is respectively mounted on each step of the stepped groove to achieve separation.

[0026] Working principle of the present embodiment: The present embodiment provides a PCB board hot pressing device, which stacks PP film, aluminum foil and PCB board and puts them into the hot pressing cavity formed between two adjacent hot pressing plates 5, then passes heat transfer oil into the oil tank 503 of the hot pressing plate 5 through the oil inlet pipe, the oil temperature sensor 52 detects the oil temperature in the oil tank 503, and the regulating valve adjusts the transmission speed of the heat transfer oil. The insulation material coated on the outside of the oil pipe 51 reduces the temperature drop caused by the influence of air. Compared with no insulation material, the insulation material reduces the loss of the heat transfer oil temperature during the transmission process, so the heat transfer oil heater consumes less electricity to heat the heat transfer oil to ensure the pressing temperature. The oil temperature sensor 52 allows people to know the temperature in the hot pressing plate 5 at any time, so as to facilitate the debugging of the output power of the heat transfer oil heater, reduce the number of debugging times, and improve work efficiency. By controlling the regulating valve, the heat transfer oil with an inappropriate initial temperature can be quickly removed from the oil tank 503 for replacement. When the temperature is appropriate, the transmission speed can be slowed down to fully exchange heat, reduce power consumption and resist the impact of environmental changes. After the temperature of the hot pressing plate 5 reaches the standard, the hydraulic cylinder 2 is started to raise the lower pressing plate 3, thereby each hot pressing plate 5 rises. Between the lower pressing plate 3 and the upper pressing plate 6, the adjacent hot pressing plates 5 press the PP film, aluminum foil and PCB board together. After the pressing is completed, the lower pressing plate 3 moves down, and each hot pressing plate 5 moves down and is respectively set up on each step of the step groove to achieve separation. The PCB board hot pressing device reduces the temperature drop caused by the influence of air, reduces power consumption and improves work efficiency.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A PCB hot pressing device, comprising a hot pressing plate (5), wherein an oil groove (503) is provided in the hot pressing plate (5), and oil guide pipes (51) are respectively provided at both ends of the oil groove (503), wherein the oil guide pipes (51) include an oil inlet pipe and an oil outlet pipe, and characterized in that: The outside of the oil guide pipe (51) is coated with a heat-insulating material, the hot pressing plate (5) is provided with an oil temperature sensor (52), the oil outlet pipe is provided with a regulating valve, and the oil inlet pipe and the oil outlet pipe are connected to a heat-conducting oil heater.

2. The PCB hot pressing device according to claim 1, characterized in that: The oil groove (503) is provided with a plurality of channels, and the two ends of each oil groove (503) are respectively connected to the oil inlet pipe and the oil outlet pipe.

3. The PCB hot pressing device according to claim 1, characterized in that: The oil groove (503) is in a serpentine shape.

4. The PCB hot pressing device according to claim 1, characterized in that: The machine frame also includes a base (1), a fixed column (4) is fixedly connected to the base (1), an upper pressure plate (6) is fixedly connected to the upper end of the fixed column (4), a lower pressure plate (3) is slidably connected to the middle of the fixed column (4), the hot pressing plate (5) is located between the upper pressure plate (6) and the lower pressure plate (3) and is slidably connected to the fixed column (4), and the lower pressure plate (3) is fixedly connected to the piston rod of the hydraulic cylinder (2).

5. The PCB hot pressing device according to claim 4, characterized in that: A plurality of hot pressing plates (5) are arranged between the upper pressing plate (6) and the lower pressing plate (3).

6. The PCB hot pressing device according to claim 5, characterized in that: A frame plate (7) is provided on both sides of the frame, and positioning protrusions (502) are respectively provided at both ends of the multiple hot pressing plates (5), the length of the positioning protrusion (502) of the hot pressing plate (5) located at the bottom is smaller than the length of the positioning protrusion (502) of the hot pressing plate (5) located at the top, and a step groove is provided on the frame plate (7), and the step groove cooperates with the positioning protrusions (502) of the multiple hot pressing plates (5).

7. The PCB board hot pressing device according to claim 4, characterized in that: A connecting block (21) is provided between the lower pressing plate (3) and the piston rod, the upper end of the connecting block (21) cooperates with the bottom surface of the lower pressing plate (3), and the lower end of the connecting block (21) cooperates with the top surface of the piston rod.

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