Vacuum recovery and utilization system and method for laminators

Abstract

This invention discloses a vacuum recovery and utilization system for a laminator, comprising a vacuum pump, a vacuum extraction valve, a laminator, a vacuum breaker valve, a balancing valve, and a pressure storage tank. The vacuum pump is connected to the laminator cavity via a vacuum extraction pipeline; the laminator cavity is connected to the pressure storage tank via a vacuum breaker pipeline; the vacuum extraction valve is located on the vacuum extraction pipeline and is used to close or open the vacuum extraction pipeline; the balancing valve is located on the vacuum breaker pipeline and is used to close or open the vacuum breaker pipeline; one end of the vacuum breaker valve is connected to the vacuum breaker pipeline between the laminator cavity and the balancing valve, and the other end is connected to the atmosphere. This invention also discloses a method for vacuum recovery and utilization in a laminator. This invention can recover and utilize the vacuum in the laminator, thereby reducing the operating time of the vacuum pump, thus reducing energy consumption, and extending the service life of the vacuum pump.

Description

Technical Field

[0001] This invention relates to copper clad laminate manufacturing technology, and in particular to a vacuum recycling system and method for laminators. Background Technology

[0002] Copper-clad laminate (CCL) is a semi-cured sheet made by impregnating reinforcing materials with resin and baking them at high temperatures. One or more prepreg sheets are then sliced ​​and stacked together, with copper foil covering one or both sides, and then laminated to form the final product. It is primarily used in the manufacture of printed circuit boards (PCBs). Multiple PCBs are laminated together using prepreg sheets to form a multilayer circuit board.

[0003] The lamination of copper-clad laminates (CCLs) and printed circuit boards (PCBs) both require the use of laminators. Currently, laminators utilize vacuum lamination technology, meaning the lamination process is performed under vacuum conditions. In a vacuum, air bubbles generated during the curing process of the prepreg are more easily expelled, reducing the pressure during lamination and thus minimizing warpage of the CCLs and PCBs, thereby improving their quality.

[0004] In a complete lamination process, after the material is fed into the laminator, the door is closed, a vacuum pump is used to start drawing a vacuum, and the vacuum is maintained during lamination. After the vacuum is maintained for a period of time, it is directly connected to the atmosphere to break the vacuum, preparing for opening the door and sending out the material. Therefore, during vacuum lamination, each press is in a cycle of establishing and breaking the vacuum.

[0005] From an energy perspective, directly connecting to the atmosphere and disrupting the vacuum is a waste of energy. Therefore, the recovery and utilization of vacuum is an important and meaningful topic. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to recover and reuse the vacuum in the laminator, thereby reducing the operating time of the vacuum pump, thus reducing energy consumption, and extending the service life of the vacuum pump.

[0007] To solve the above-mentioned technical problems, the present invention provides a vacuum recovery and utilization system for a laminator, which includes a vacuum pump 1, a vacuum valve 2, a laminator 3, a vacuum breaking valve 4, a balance valve 5, and a pressure storage tank 6.

[0008] Vacuum pump 1 is connected to the cavity of laminator 3 via a vacuum pumping pipeline;

[0009] The chamber of the laminator 3 is connected to the pressure tank 6 via a vacuum pipeline.

[0010] The vacuum valve 2 is installed on the vacuum pipeline and is used to close or open the vacuum pipeline.

[0011] The balance valve 5 is installed on the vacuum breaking pipeline and is used to close or open the vacuum breaking pipeline;

[0012] One end of the vacuum breaking valve 4 is connected to the vacuum breaking pipeline between the cavity of the laminator 3 and the balance valve 5, and the other end is connected to the atmosphere.

[0013] Preferably, the laminator vacuum recovery system is equipped with M vacuum pumps 1, N vacuum valves 2, N laminator chambers 3, N vacuum breaking valves 4 and N balancing valves 5, where M and N are both integers greater than 1;

[0014] M vacuum pumps 1 are each connected to the main vacuum pipeline 90 through the extraction pipeline 10;

[0015] Each of the N laminators has a 3-chamber structure and is connected to the main vacuum pipeline 90 via a vacuum sub-pipeline 91.

[0016] Each vacuum sub-pipeline 91 is equipped with a vacuum valve 2;

[0017] Each of the N laminators has a 3-chamber structure and is connected to the main vacuum pipeline 94 via a vacuum disruption sub-pipeline 93.

[0018] Pressure tank 6 is connected to the main vacuum pipeline 94 via a rupture pipeline 60;

[0019] Each balance valve 5 is provided in the vacuum sub-pipeline 93 that breaks the vacuum of the laminator chamber 3;

[0020] Each laminator chamber 3 is connected to a vacuum breaking sub-pipeline 93 between the chamber and the balance valve 5, which is connected to one end of a vacuum breaking valve 4. The other end of the vacuum breaking valve 4 is connected to the atmosphere.

[0021] Ideally, M should be 4 and N should be 3.

[0022] Preferably, the volume of the pressure tank 6 is more than twice that of the laminator 3 cavity.

[0023] Preferably, the volume of the pressure tank 6 is greater than 5 times that of the laminator 3 cavity.

[0024] Preferably, the volume of the pressure tank 6 is more than 10 times that of the laminator 3 cavity.

[0025] To solve the above-mentioned technical problems, the vacuum recovery and utilization method of the laminator vacuum recovery and utilization system provided by the present invention, in normal operation, shuts off the balance valve 5 to close the passage between the pressure tank 6 and the laminator 3 cavity, so that the gas pressure in the pressure tank is less than 1 atmosphere.

[0026] When evacuating the cavity of the laminator 3: first open the balance valve 5 to connect the cavity of the laminator 3 with the pressure tank 6, and the pressure tank 6 evacuates the cavity of the laminator 3; after the air pressure between the cavity of the laminator 3 and the pressure tank 6 is balanced, close the balance valve 5, and then open the vacuum valve 2 to connect the vacuum pump 1 with the cavity of the laminator 3, and use the vacuum pump 1 to evacuate the cavity of the laminator 3.

[0027] When the vacuum in the chamber of laminator 3 is broken: first open the balance valve 5 to connect the chamber of laminator 3 with the pressure tank 6, and the chamber of laminator 3 will pump air from the pressure tank 6; after the air pressure between the chamber of laminator 3 and the pressure tank 6 is balanced, close the balance valve 5, and then open the vacuum breaking valve 7 to connect the chamber of laminator 3 with the atmosphere.

[0028] The vacuum recovery and utilization system and method for a laminator of the present invention recovers the vacuum in the cavity of the laminator 3 through a pressure storage tank 6. When the laminator 3 is evacuated, it is first connected to the pressure storage tank 6, which evacuates the cavity of the laminator 3. Once the pressure between the cavity of the laminator 3 and the pressure storage tank 6 is balanced, a vacuum pump 1 is used to evacuate the cavity of the laminator 3. When the laminator 3 breaks the vacuum, it is first connected to the pressure storage tank 6, which evacuates the cavity of the laminator 3. Once the pressure between the cavity of the laminator 3 and the pressure storage tank 6 is balanced, a vacuum breaking valve 4 is opened to make the pressure in the cavity of the laminator 3 the same as atmospheric pressure. This invention can recover and utilize the vacuum in the laminator 3, thereby reducing the operating time of the vacuum pump 1, reducing energy consumption, and extending the service life of the vacuum pump 1. Attached Figure Description

[0029] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an embodiment of the vacuum recovery and utilization system for laminators of the present invention;

[0031] Figure 2 This is a schematic diagram of another embodiment of the vacuum recovery and utilization system for the laminator of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1 Vacuum pump; 2 Vacuum valve; 3 Laminator; 4 Vacuum breaker valve; 5 Balance valve; 6 Pressure tank; 10 Vacuum extraction pipeline; 90 Main vacuum extraction pipeline; 91 Sub-vacuum extraction pipeline; 93 Sub-vacuum breaker pipeline; 94 Main vacuum breaker pipeline; 60 Breaker pipeline. Detailed Implementation

[0034] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1 , Figure 2 As shown, the laminator vacuum recovery and utilization system includes a vacuum pump 1, a vacuum valve 2, a laminator 3, a vacuum breaking valve 4, a balance valve 5, and a pressure storage tank 6.

[0037] Vacuum pump 1 is connected to the cavity of laminator 3 via a vacuum pumping pipeline;

[0038] The chamber of the laminator 3 is connected to the pressure tank 6 via a vacuum pipeline.

[0039] The vacuum valve 2 is installed on the vacuum pipeline and is used to close or open the vacuum pipeline.

[0040] The balance valve 5 is installed on the vacuum breaking pipeline and is used to close or open the vacuum breaking pipeline;

[0041] One end of the vacuum breaking valve 4 is connected to the vacuum breaking pipeline between the cavity of the laminator 3 and the balance valve 5, and the other end is connected to the atmosphere.

[0042] The vacuum recovery and utilization system for the laminator in Example 1 recovers the vacuum in the chamber of the laminator 3 through the pressure storage tank 6. When the laminator 3 is evacuated, it is first connected to the pressure storage tank 6, and the pressure storage tank 6 evacuates the chamber of the laminator 3. After the air pressure between the chamber of the laminator 3 and the pressure storage tank 6 is balanced, the vacuum pump 1 is used to evacuate the chamber of the laminator 3. When the laminator 3 breaks the vacuum, it is first connected to the pressure storage tank 6, and the chamber of the laminator 3 evacuates the pressure storage tank 6. After the air pressure between the chamber of the laminator 3 and the pressure storage tank 6 is balanced, the vacuum breaking valve 4 is opened to make the air pressure in the chamber of the laminator 3 the same as the atmospheric pressure.

[0043] The vacuum recovery and utilization system of the laminator in Example 1 has a simple structure and can recover and utilize the vacuum in the laminator 3, thereby reducing the running time of the vacuum pump 1, reducing energy consumption, and extending the service life of the vacuum pump 1.

[0044] Example 2

[0045] Based on Example 1, such as Figure 2 As shown, the laminator vacuum recovery system is equipped with M vacuum pumps 1, N vacuum valves 2, N laminator chambers 3, N vacuum breaking valves 4 and N balance valves 5, where M and N are both integers greater than 1;

[0046] M vacuum pumps 1 are each connected to the main vacuum pipeline 90 through the extraction pipeline 10;

[0047] Each of the N laminators has a 3-chamber structure and is connected to the main vacuum pipeline 90 via a vacuum sub-pipeline 91.

[0048] Each vacuum sub-pipeline 91 is equipped with a vacuum valve 2;

[0049] Each of the N laminators has a 3-chamber structure and is connected to the main vacuum pipeline 94 via a vacuum disruption sub-pipeline 93.

[0050] Pressure tank 6 is connected to the main vacuum pipeline 94 via a rupture pipeline 60;

[0051] Each balance valve 5 is provided in the vacuum sub-pipeline 93 that breaks the vacuum of the laminator chamber 3;

[0052] Each laminator chamber 3 is connected to a vacuum breaking sub-pipeline 93 between the chamber and the balance valve 5, which is connected to one end of a vacuum breaking valve 4. The other end of the vacuum breaking valve 4 is connected to the atmosphere.

[0053] Ideally, M should be 4 and N should be 3.

[0054] Preferably, the volume of the pressure tank 6 is more than twice that of the laminator 3 cavity.

[0055] Preferably, the volume of the pressure tank 6 is greater than 5 times that of the laminator 3 cavity.

[0056] Preferably, the volume of the pressure tank 6 is more than 10 times that of the laminator 3 cavity.

[0057] Example 3

[0058] The vacuum recovery method of the laminator vacuum recovery system in Example 1 or 2, during normal operation, shuts off the balance valve 5 to close the passage between the pressure tank 6 and the laminator 3 cavity, so that the gas pressure in the pressure tank is less than 1 atmosphere.

[0059] When evacuating the cavity of the laminator 3: first open the balance valve 5 to connect the cavity of the laminator 3 with the pressure tank 6, and the pressure tank 6 evacuates the cavity of the laminator 3; after the air pressure between the cavity of the laminator 3 and the pressure tank 6 is balanced, close the balance valve 5, and then open the vacuum valve 2 to connect the vacuum pump 1 with the cavity of the laminator 3, and use the vacuum pump 1 to evacuate the cavity of the laminator 3.

[0060] When the vacuum in the chamber of laminator 3 is broken: first, open the balance valve 5 to connect the chamber of laminator 3 with the pressure tank 6, and the chamber of laminator 3 will pump air from the pressure tank 6; after the air pressure between the chamber of laminator 3 and the pressure tank 6 is balanced, close the balance valve 5, and then open the vacuum breaking valve 7 to connect the chamber of laminator 3 with the atmosphere, so that the air pressure in the chamber of laminator 3 is the same as the atmospheric pressure.

[0061] The vacuum recovery and utilization method in Example 3 can recover and utilize the vacuum in the laminator 3 of the laminator vacuum recovery and utilization system, thereby reducing the running time of the vacuum pump 1, reducing energy consumption, and extending the service life of the vacuum pump 1.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vacuum recycling method for a laminator vacuum recycling system, characterized in that, The vacuum recovery and utilization system for the laminator includes a vacuum pump (1), a vacuum valve (2), a laminator (3), a vacuum breaking valve (4), a balancing valve (5), and a pressure tank (6). The vacuum pump (1) is connected to the cavity of the laminator (3) through a vacuum pumping pipeline; The cavity of the laminator (3) is connected to the pressure tank (6) via a vacuum pipeline; The vacuum valve (2) is installed on the vacuum pipeline and is used to close or connect the vacuum pipeline. The balance valve (5) is installed on the vacuum breaking pipeline and is used to close or connect the vacuum breaking pipeline; One end of the vacuum breaking valve (4) is connected to the vacuum breaking pipeline between the cavity of the laminator (3) and the balance valve (5), and the other end is connected to the atmosphere; During normal operation, the balance valve (5) is turned off to close the passage between the pressure tank (6) and the chamber of the press (3), so that the air pressure in the pressure tank is less than 1 atmosphere. When evacuating the cavity of the laminator (3): first open the balance valve (5) to connect the cavity of the laminator (3) with the pressure tank (6), and the pressure tank (6) evacuates the cavity of the laminator (3); after the air pressure between the cavity of the laminator (3) and the pressure tank (6) is balanced, close the balance valve (5), and then open the vacuum valve (2) to connect the vacuum pump (1) with the cavity of the laminator (3), and use the vacuum pump (1) to evacuate the cavity of the laminator (3); When the cavity of the laminator (3) breaks the vacuum: first open the balance valve (5) to connect the cavity of the laminator (3) with the pressure tank (6), and the cavity of the laminator (3) pumps air from the pressure tank (6); after the air pressure between the cavity of the laminator (3) and the pressure tank (6) is balanced, close the balance valve (5), and then open the vacuum breaking valve (4) to connect the cavity of the laminator (3) with the atmosphere.

2. The vacuum recycling method according to claim 1, characterized in that, The laminator vacuum recovery system is equipped with M vacuum pumps (1), N vacuum valves (2), N laminator (3) chambers, N vacuum breaking valves (4) and N balance valves (5), where M and N are both integers greater than 1; M vacuum pumps (1) are connected to the main vacuum pipeline (90) through the pumping pipeline (10); The N laminator (3) chambers are connected to the main vacuum pipeline (90) through vacuum sub-pipelines (91); Each vacuum sub-pipeline (91) is equipped with a vacuum valve (2); The N laminator (3) chambers are connected to the main vacuum pipeline (94) through the vacuum breaking sub-pipeline (93); The pressure tank (6) is connected to the main vacuum pipeline (94) via the rupture pipeline (60). Each balance valve (5) is provided with a balance valve (5) in the vacuum sub-line (93) leading to the laminator (3) cavity; Each laminator (3) cavity is connected to a vacuum breaking sub-pipeline (93) between the balance valve (5) and one end of a vacuum breaking valve (4), and the other end of the vacuum breaking valve (4) is connected to the atmosphere.

3. The vacuum recycling method according to claim 1, characterized in that, M is 4, N is 3.

4. The vacuum recycling method according to claim 1, characterized in that, The volume of the pressure tank (6) is more than twice that of the laminator (3) cavity.

5. The vacuum recycling method according to claim 1, characterized in that, The volume of the pressure tank (6) is more than 5 times that of the laminator (3) cavity.

6. The vacuum recycling method according to claim 1, characterized in that, The volume of the pressure tank (6) is more than 10 times that of the laminator (3) cavity.

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