Program type control device for vacuum pumping of press

Abstract

The utility model aims to provide the vacuumizing program type control device for the press, which can be opened and closed by being matched with the state of the internal space of the press, so that the cost is reduced, the forming efficiency is improved, and the product quality is ensured. The device comprises a vacuum-pumping assembly, a floating plugging assembly and an acquisition switch assembly electrically connected with the vacuum-pumping assembly, the vacuum-pumping assembly is connected with an exhaust hole of an inner cavity of the thermocompression bonding equipment, and the acquisition switch assembly comprises an air pressure sensor arranged in the inner cavity of the thermocompression bonding equipment. The floating plugging assembly comprises a floating spring and a plugging piece, the plugging piece is arranged in a supporting frame arranged on the exhaust hole in a sliding fit mode, and the floating spring drives the plugging piece to move towards the inner cavity of the thermocompression bonding equipment and plug the exhaust hole. The utility model is applied to the technical field of copper-clad plate preparation equipment.

Description

Technical Field

[0001] The utility model is applied to the technical field of aluminum-based copper-clad plate preparation equipment, and particularly relates to a vacuum program control device for a press. Background Art

[0002] Aluminum-based copper-clad laminate is a substrate material used in the manufacture of printed circuit boards. It is made of an insulating adhesive layer covered with copper foil on one or both sides and then hot-pressed. In the process of pressing aluminum-based copper-clad laminate products, waste gas will be generated after the thermal conductive adhesive layer is exposed to high temperature. The inside of the press is a closed space. In order to ensure the quality of the aluminum-based copper-clad laminate, the waste gas needs to be discharged. However, traditional vacuum pumps usually work continuously and cannot control the state of hot pressing. Excessive vacuuming will affect the pressing and forming effect of the product. Therefore, a vacuum pumping device is needed that can discharge waste gas, air, water vapor, etc. at a specific moment in the pressing process to ensure the pressing quality.

[0003] For this purpose, a press vacuum program control device is needed that can draw a vacuum so that the waste gas, air, water vapor, etc. inside the press can be discharged out of the press in time, and can be opened and closed within the required time, so as to meet the requirements of the press vacuum program control device to discharge the waste gas, air and water vapor during the pressing process, thereby achieving the goal of controlling costs, improving efficiency and ensuring product quality at the same time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a programmable control device for vacuuming a press which can be opened and closed in accordance with the internal space state of the press, thereby reducing costs, improving molding efficiency and ensuring product quality.

[0005] The technical solution adopted by the utility model is: the utility model includes a vacuum pumping component, a floating sealing component and a collection switch component electrically connected to the vacuum pumping component, the vacuum pumping component is connected to the exhaust hole of the inner cavity of the hot pressing equipment, the collection switch component includes an air pressure sensor arranged in the inner cavity of the hot pressing equipment, the floating sealing component includes a floating spring and a sealing member, the sealing member is slidably fitted in a support frame arranged on the exhaust hole, and the floating spring drives the sealing member to move toward the inner cavity of the hot pressing equipment and seal the exhaust hole.

[0006] As can be seen from the above scheme, the vacuum pumping component is used to connect with the inner cavity of the hot pressing equipment, so as to realize vacuum pumping of the inner cavity of the hot pressing equipment, and extract the waste gas generated during the hot pressing of the aluminum-based copper-clad laminate, so as to prevent the waste gas from affecting the quality of the aluminum-based copper-clad laminate. The air pressure value of the inner cavity of the hot pressing equipment is collected by setting an air pressure sensor. When the air pressure value exceeds the set threshold, the acquisition switch component conducts the power supply of the vacuum pumping component, so as to control the start of the vacuum pumping component. When the inner cavity of the hot pressing equipment is in a low-pressure state, the sealing member closes the exhaust hole under the action of the external atmospheric pressure and the floating spring, so as to keep the inner cavity of the hot pressing equipment airtight, so as to achieve the effect of preventing the entry of external water vapor when the vacuum pumping component is not started. When the vacuum pumping component is started, the sealing member compresses the floating spring under the action of negative pressure to open the exhaust hole. The above structure can detect the internal air pressure, so as to timely extract the waste gas during the hot pressing process, so as to ensure the product quality. At the same time, it avoids the impact of continuous vacuuming on product shape and the increase in power consumption costs, and can ensure faster and better product molding.

[0007] A preferred solution is that a block that cooperates with the exhaust hole to limit the position is provided at one end of the sealing member, the floating spring is sleeved on the sealing member and is located between the block and the support frame, and a flexible sealing block is provided at the other end of the sealing member, and the flexible sealing block cooperates with the exhaust hole.

[0008] A preferred solution is that a gas channel connected to the inner cavity of the heat pressing device is provided in the sealing member, and a gap connected to the gas channel is provided on the side wall of the flexible sealing block, the gap is in a closed state when the inner cavity of the heat pressing device is under low pressure, and the gap will cause the gap to flexibly deform and open when the air pressure in the inner cavity of the heat pressing device increases, and the collection switch assembly also includes a humidity sensor arranged on the side of the exhaust hole and cooperating with the gap.

[0009] A preferred solution is that the acquisition switch component includes a relay and a controller, the relay is connected between the vacuum component and the power supply, the controller is connected to the control end of the relay, and the air pressure sensor is connected to the controller via an electrical signal.

[0010] A preferred solution is that the acquisition switch assembly further includes a temperature sensor, the temperature sensor is disposed in the inner cavity of the thermal pressing device, and the temperature sensor is electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 yes Figure 1 A magnified view of part A;

[0013] Figure 3 is a schematic diagram of the three-dimensional structure of the blocking member;

[0014] Figure 4 is a cross-sectional view of the blocking member;

[0015] Figure 5 It is a connection block diagram of the acquisition switch component. DETAILED DESCRIPTION

[0016] like Figures 1 to 5 As shown, in this embodiment, the utility model includes a vacuum assembly 2, a floating sealing assembly 3 and a collection switch assembly electrically connected to the vacuum assembly 2, the vacuum assembly 2 is connected to the exhaust hole 11 of the inner cavity 1 of the hot pressing equipment, the collection switch assembly includes an air pressure sensor 41 arranged in the inner cavity 1 of the hot pressing equipment, the floating sealing assembly 3 includes a floating spring 31 and a sealing member 32, the sealing member 32 is slidably fitted in a support frame 12 arranged on the exhaust hole 11, and the floating spring 31 drives the sealing member 32 to move toward the inner cavity 1 of the hot pressing equipment and seal the exhaust hole 11.

[0017] like Figure 2 and Figure 3 As shown, in this embodiment, the blocking member 32 is columnar, a sliding hole matching the blocking member is provided in the middle of the support frame 12, the support frame 12 is a hollow structure, the outer wall of the support frame 12 is limitedly matched with the exhaust hole 11, one end of the blocking member 32 is provided with a clamping block 321 limitedly matched with the exhaust hole 11, the floating spring 31 is sleeved on the blocking member 32 and is located between the clamping block 321 and the support frame 12, the diameter of the clamping block 321 is larger than the sliding hole, and the other end of the blocking member 32 is provided with a flexible sealing block 322, and the flexible sealing block 322 matches the exhaust hole 11. Under normal conditions, the blocking member 32 blocks the exhaust hole 11 under the action of the floating spring 31, and the exhaust hole 11 is covered and sealed by the flexible sealing block 322, wherein the elastic force of the floating spring 31 is set according to the working conditions. The negative pressure generated by the vacuum assembly 2 when in operation is large enough to drive the blocking member 32 to move and compress the floating spring 31, thereby opening the exhaust hole 11 and vacuumizing the inner cavity 1 of the thermal compression bonding device.

[0018] like Figure 3 and Figure 4As shown, in this embodiment, a gas channel 323 connected to the inner cavity 1 of the hot pressing device is provided in the sealing member 32, and a gap 324 connected to the gas channel 323 is provided on the side wall of the flexible sealing block 322. The gap 324 is in a closed state when the inner cavity 1 of the hot pressing device is under low pressure. When the air pressure in the inner cavity 1 of the hot pressing device increases, the gap 324 will be driven to flexibly deform and open. The collection switch assembly also includes a humidity sensor 42 arranged on the side of the exhaust hole 11 and cooperating with the gap 324. The gap 324 is set by utilizing the flexible deformation of the flexible sealing block 322, and the gap 324 is deformed by the pressure effect when the internal air pressure becomes high, thereby forming a small gas leakage. The deformation pressure value of the gap 324 is less than the starting air pressure threshold set by the vacuum assembly 2. The humidity of the gas leaking from the gap 324 is continuously detected by setting a humidity sensor 42, and then the environment of the inner cavity 1 of the hot pressing equipment is monitored. When the humidity is high, the vacuum assembly 2 is also started to evacuate air, thereby reducing the internal humidity, ensuring that the humidity during the hot pressing process is not too high, and improving the product molding quality.

[0019] like Figure 5 As shown, in this embodiment, the acquisition switch component includes a relay 43 and a controller 44, the relay 43 is connected between the vacuum component 2 and the power supply, the controller 44 is connected to the control end of the relay 43, and the air pressure sensor 41 is electrically connected to the controller 44. The on and off of the vacuum component 2 is controlled by the relay 43, and the controller 44 is a microprocessor, such as a processor chip of the STM32 series.

[0020] In this embodiment, the vacuum pump component 2 is a gas vacuum pump.

[0021] In this embodiment, the acquisition switch assembly further includes a temperature sensor 45, which is disposed in the inner cavity 1 of the thermal compression bonding device and is electrically connected to the controller 44. The temperature sensor 45 is provided to detect the temperature of the inner cavity of the device. The generation of waste gas and water vapor usually occurs during the heating process, when the product undergoes chemical changes and internal water vapor evaporates. By performing temperature detection, vacuuming is started while waste gas is generated, and the internal environment is adjusted in time.

[0022] In this embodiment, the air pressure sensor 41 , the humidity sensor 42 , and the temperature sensor 45 are all common sensor structures.

[0023] The working principle of this utility model:

[0024] When the hot pressing equipment is started, the controller 44 monitors various environmental parameters of the inner cavity 1 of the hot pressing equipment through the air pressure sensor 41, the humidity sensor 42 and the temperature sensor 45. When one of the parameters exceeds the set threshold, the controller 44 controls the relay 43 to energize the vacuum component 2, and the vacuum component 2 starts to extract the exhaust gas and water vapor, and stops when the conditions are met or the set time is reached.

[0025] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A programmable control device for vacuuming a press, comprising a vacuuming assembly (2) connected to an exhaust hole (11) of an inner cavity (1) of a heat pressing device, characterized in that: It also includes a floating plugging component (3) and a collection switch component electrically connected to the vacuum assembly (2), the collection switch component including an air pressure sensor (41) arranged in the inner cavity (1) of the thermal compression bonding device, the floating plugging component (3) including a floating spring (31) and a plugging member (32), the plugging member (32) slidably engaged in a support frame (12) arranged on the exhaust hole (11), the floating spring (31) driving the plugging member (32) to move toward the inner cavity (1) of the thermal compression bonding device and to plug the exhaust hole (11).

2. The program control device for vacuuming a press according to claim 1, characterized in that: A clamping block (321) that cooperates with the exhaust hole (11) to limit the position is provided at one end of the blocking member (32); the floating spring (31) is sleeved on the blocking member (32) and is located between the clamping block (321) and the support frame (12); a flexible sealing block (322) is provided at the other end of the blocking member (32); the flexible sealing block (322) cooperates with the exhaust hole (11).

3. The program control device for vacuuming a press according to claim 2, characterized in that: The sealing member (32) is provided with a gas passage (323) in communication with the inner cavity (1) of the heat pressing device; a slit (324) in communication with the gas passage (323) is provided on the side wall of the flexible sealing block (322); the slit (324) is in a closed state when the inner cavity (1) of the heat pressing device is under low pressure; when the inner cavity (1) of the heat pressing device is under increased pressure, the slit (324) is driven to undergo flexible deformation and open; the collection switch assembly further comprises a humidity sensor (42) arranged around the exhaust hole (11) and cooperating with the slit (324).

4. The program control device for vacuuming a press according to claim 1, characterized in that: The acquisition switch component comprises a relay (43) and a controller (44); the relay (43) is connected between the vacuum pumping component (2) and a power supply; the controller (44) is connected to a control end of the relay (43); and the air pressure sensor (41) is connected to the controller (44) via an electrical signal.

5. The program control device for vacuuming a press according to claim 4, characterized in that: The acquisition switch assembly further comprises a temperature sensor (45), wherein the temperature sensor (45) is arranged in the inner cavity (1) of the thermal compression bonding device, and the temperature sensor (45) is electrically signal-connected to the controller (44).

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