Vacuum differential pressure type sizing material filling and sealing system and method

Abstract

The invention discloses a vacuum differential pressure type sizing material filling and sealing system which comprises a stirring barrel, a filling and sealing box, a first vacuumizing device, a second vacuumizing device and a temperature control device, the first vacuumizing device is connected with the stirring barrel, the second vacuumizing device is connected with the filling and sealing box, a stirring mechanism is arranged in the stirring barrel, a cover plate is arranged on the top of the stirring barrel, and / or the top of the stirring barrel is connected with a feeding device. A glue filling component is arranged in the filling and sealing box, the stirring barrel is connected with the glue filling component, and the first vacuumizing device and the second vacuumizing device are used for forming a vacuum difference between the stirring barrel and the filling and sealing box so that glue in the stirring barrel can flow to the glue filling component. The invention further discloses a vacuum differential pressure type sizing material filling and sealing method which is carried out by adopting the vacuum differential pressure type sizing material filling and sealing system. According to the vacuum differential pressure type sizing material potting system and method, air is prevented from being dissolved in the sizing material, bubbles are prevented from being generated, the potting quality is improved, the sizing material is prevented from caking, the sizing material is subjected to potting under the good fluidity and the bubble-free condition, and the good potting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of resin glue potting equipment, and in particular to a vacuum pressure differential glue potting system and method. Background Art

[0002] A solid-state drive must be able to download and analyze data files over a gigabit network even after experiencing high overload shocks. Therefore, the integrated circuit board (IC) within the solid-state drive must be well protected. Typically, an epoxy resin potting system is used to pot the IC with epoxy resin. The quality of the potting directly affects the IC's protection after experiencing high overload shocks.

[0003] Existing Chinese patent document with patent number ZL201010105167.6 discloses a resin glue vacuum potting device and potting process. The potting device includes: a vacuum drying oven, a vacuum pump, a sealing cylinder, a circuit cylinder, a glue overflow cup, connecting pipes and valves, etc., forming a complete vacuum potting system with vacuum suction and atmospheric pressure pushing, which automatically flows the pressure differential potting glue. The vacuum potting system operates the resin glue vacuum potting device under vacuum by manipulating the exhaust valve and the pressure valve. The exhaust valve is closed and the pressure valve is opened to achieve a suitable atmospheric pressure in the sealing cylinder. The pressure valve is then closed to form a pressure differential between the atmospheric pressure in the sealing cylinder and the vacuum in the circuit cylinder. The pressure differential between the atmospheric pressure in the sealing cylinder and the vacuum in the circuit cylinder is maintained for a certain period of time, forming a vacuum potting mechanism for the entire vacuum potting system with vacuum suction and atmospheric pressure pushing, which automatically flows the pressure differential potting glue. The resin glue vacuum potting device and potting process have the following deficiencies: 1) Since the fluidity of the resin collagen liquid is affected by temperature, air, etc., the method of introducing air into the sealing cylinder to form a pressure difference between the sealing cylinder and the circuit cylinder to cause the resin collagen liquid in the sealing cylinder to flow into the circuit cylinder will, on the one hand, cause more air to dissolve in the resin collagen liquid, generate bubbles, and affect the potting quality; on the other hand, the air dissolved in the resin collagen liquid will affect its fluidity, which may cause blockage or unsuccessful potting. 2) Since the fluidity of the resin collagen solution is time-sensitive, adding the resin collagen solution to the potting glue cup inside the sealing cylinder in a vacuum drying oven is time-consuming, affecting the fluidity of the resin collagen solution; 3) The resin collagen liquid flows to the circuit tube in a static state in the potting glue cup, which easily agglomerates and affects the fluidity; 4) The overall temperature is difficult to control, which affects the fluidity of the resin collagen solution and the potting effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a vacuum pressure differential glue potting system and method that is beneficial to avoiding air dissolving in the glue and generating bubbles, improving the potting quality, preventing the glue from agglomerating, and allowing the glue to be potted under good fluidity and bubble-free conditions, thereby achieving good potting effect.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A vacuum pressure differential glue potting system comprises a mixing barrel, a potting box, a first vacuum pumping device, a second vacuum pumping device and a temperature control device, wherein the first vacuum pumping device is connected to the mixing barrel, and the second vacuum pumping device is connected to the potting box, the mixing barrel is provided with a stirring mechanism, a cover is provided on the top and / or is connected to a feeding device, the potting box is provided with a glue potting component, the discharge port of the mixing barrel is connected to the glue potting component through a conveying pipe, the stirring mechanism is used to maintain the glue in the mixing barrel in a flowing state, the temperature control device is used to keep the glue in the mixing barrel within a set temperature range, the first vacuum pumping device and the second vacuum pumping device are used to form a vacuum difference between the mixing barrel and the potting box so that the glue in the mixing barrel flows to the glue potting component, and the glue potting component is used to pot the glue onto a target workpiece.

[0006] As a further improvement of the above technical solution: The stirring mechanism includes a stirring disk, stirring teeth arranged on the upper surface of the stirring disk and a rotation driving component for driving the stirring disk to rotate. The stirring disk is rotatably arranged at the bottom of the stirring barrel.

[0007] The rotary drive assembly is a magnetic drive assembly arranged below the stirring barrel.

[0008] A tray is provided at the bottom of the stirring plate, and the tray is rotatably arranged at the bottom of the stirring barrel.

[0009] A blind hole is provided on the inner bottom surface of the mixing barrel, a rotating shaft is provided at the bottom center of the tray, and the rotating shaft is arranged in the blind hole through a bearing.

[0010] The mixing barrel and the filling box are both provided with pressure detection mechanisms.

[0011] An on-off valve is provided on the delivery pipeline.

[0012] A flow regulating valve is provided on the delivery pipeline.

[0013] The vacuum pressure differential glue potting system further includes a support platform, and the stirring barrel, the potting box, the first vacuum pumping device and the second vacuum pumping device are arranged on the support platform at intervals.

[0014] A vacuum pressure differential adhesive potting method is performed using the above-mentioned vacuum pressure differential adhesive potting system, comprising the following steps: S1. Preheat the rubber material to the set temperature range and then add it to the mixing barrel. At the same time, the stirring mechanism is turned on to keep the rubber material in the mixing barrel in a fluid state, and the temperature control device keeps the rubber material in the mixing barrel within the set temperature range; S2, the first vacuum pumping device and the second vacuum pumping device are turned on to put the mixing barrel and the filling box into a vacuum environment; S3. The first vacuum pumping device and the second vacuum pumping device create a vacuum difference between the mixing barrel and the potting box to allow the glue in the mixing barrel to flow to the glue potting component, and the glue is potted onto the target workpiece through the glue potting component.

[0015] Compared with the prior art, the advantages of the present invention are: The vacuum pressure differential glue potting system of the present invention comprises a mixing barrel and a potting box, each of which is connected to a first vacuum pumping device and a second vacuum pumping device, respectively. Furthermore, a temperature control device is used to maintain the glue in the mixing barrel within a set temperature range. Through its unique structural design, the following outstanding effects are achieved: first, the first vacuum pumping device and the second vacuum pumping device respectively vacuum the mixing barrel and the potting box, creating a vacuum difference between the mixing barrel and the potting box so that the glue in the mixing barrel flows to the potting component. Combined with the stirring action of the stirring mechanism, this helps prevent air from dissolving in the glue and generating bubbles, thereby improving the potting quality. Second, preheated glue can be added to the mixing barrel by opening the cover or directly through the feeding device, allowing the glue to be quickly added to the mixing barrel. The stirring mechanism maintains a fluid state, preventing the glue from agglomerating, further improving the subsequent potting effect. Third, the temperature control device maintains the glue in the mixing barrel within a set temperature range. Combined with the stirring action of the stirring mechanism and the conveying action of the vacuum difference, the glue is potted under excellent fluidity and bubble-free conditions, achieving excellent potting effect.

[0016] The vacuum pressure difference glue potting method of the present invention is as follows: first, the first vacuum pumping device and the second vacuum pumping device respectively vacuum the mixing barrel and the potting box, so that a vacuum difference is formed between the mixing barrel and the potting box so that the glue in the mixing barrel flows to the glue potting component. Combined with the stirring action of the stirring mechanism, it is beneficial to avoid air dissolving in the glue and generating bubbles, thereby improving the potting quality; second, the preheated glue can be added to the mixing barrel by opening the cover or directly through the feeding device, so that the glue is quickly added to the mixing barrel, and the stirring mechanism keeps the glue in a fluid state to prevent the glue from agglomerating, which is further beneficial to improving the subsequent potting effect; third, the temperature control device keeps the glue in the mixing barrel within the set temperature range. Combined with the stirring action of the stirring mechanism and the conveying action of the vacuum difference, the glue is potted under good fluidity and bubble-free conditions, thereby achieving a good potting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the three-dimensional structure of the vacuum pressure differential glue potting system of the present invention.

[0018] Figure 2 It is a schematic top view of the structure of the vacuum pressure differential glue potting system of the present invention.

[0019] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0020] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Figure 5 It is a schematic diagram of the vacuum pressure differential glue potting system of the present invention.

[0022] The numbers in the figure represent: 1. Mixing barrel; 10. Pressure detection mechanism; 11. Blind hole; 12. Support platform; 2. Potting box; 3. First vacuum pumping device; 4. Second vacuum pumping device; 5. Stirring mechanism; 51. Stirring plate; 52. Stirring teeth; 53. Rotary drive assembly; 54. Tray; 55. Rotating shaft; 56. Bearing; 6. Cover plate; 7. Feeding device; 8. Glue potting component; 9. Delivery pipeline; 91. On-off valve; 92. Flow regulating valve. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the present invention, unless otherwise expressly specified or limited, terms such as "assemble," "connect," "connect," and "fix" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] Example 1: Figures 1 to 5 An embodiment of the vacuum pressure differential glue filling system of the present invention is shown. The vacuum pressure differential glue filling system of this embodiment includes a mixing barrel 1, a filling box 2, a first vacuum pumping device 3, a second vacuum pumping device 4 and a temperature control device. The first vacuum pumping device 3 is connected to the mixing barrel 1, and the second vacuum pumping device 4 is connected to the filling box 2. A stirring mechanism 5 is provided in the mixing barrel 1, a cover plate 6 is provided on the top and / or a feeding device 7 is connected. A glue filling component 8 is provided in the filling box 2, and the discharge port of the mixing barrel 1 is connected to the glue filling component 8 through a conveying pipe 9. The stirring mechanism 5 is used to maintain the glue in the mixing barrel 1 in a flowing state, and the temperature control device is used to keep the glue in the mixing barrel 1 within a set temperature range. The first vacuum pumping device 3 and the second vacuum pumping device 4 are used to form a vacuum difference between the mixing barrel 1 and the filling box 2 so that the glue in the mixing barrel 1 flows to the glue filling component 8, and the glue filling component 8 is used to fill the glue onto the target workpiece.

[0028] The sealing process of this vacuum pressure differential glue sealing system is as follows: first, the glue is preheated to a set temperature range and then added to the stirring barrel 1. At the same time, the stirring mechanism 5 is turned on to maintain the glue in the stirring barrel 1 in a flowing state, and the temperature control device keeps the glue in the stirring barrel 1 within the set temperature range; secondly, the first vacuum pumping device 3 and the second vacuum pumping device 4 are turned on to put the stirring barrel 1 and the sealing box 2 in a vacuum environment, which can keep the glue stirring in the vacuum environment for the required time; then, the first vacuum pumping device 3 and the second vacuum pumping device 4 form a vacuum difference between the stirring barrel 1 and the sealing box 2 to make the glue in the stirring barrel 1 flow to the glue filling component 8, and the glue is sealed onto the target workpiece through the glue filling component 8.

[0029] In this vacuum pressure differential glue filling system, a mixing barrel 1 and a filling box 2 are separately provided, and the mixing barrel 1 and the filling box 2 are respectively connected to a first vacuum pumping device 3 and a second vacuum pumping device 4, and a temperature control device is used to keep the glue in the mixing barrel 1 within a set temperature range. Through its special structural design, the following outstanding effects are achieved: first, the first vacuum pumping device 3 and the second vacuum pumping device 4 respectively vacuum the mixing barrel 1 and the potting box 2, so that a vacuum difference is formed between the mixing barrel 1 and the potting box 2 so that the glue in the mixing barrel 1 flows to the glue potting component 8. Combined with the stirring effect of the stirring mechanism 5, it is beneficial to avoid air dissolving in the glue and generating bubbles, thereby improving the potting quality; second, the preheated glue can be added to the mixing barrel 1 by opening the cover 6 or directly through the feeding device 7, so that the glue is quickly added to the mixing barrel 1, and is kept in a fluid state by the stirring mechanism 5 to prevent the glue from agglomerating, which is further beneficial to improving the subsequent potting effect; third, the temperature control device keeps the glue in the mixing barrel 1 within the set temperature range. Combined with the stirring effect of the stirring mechanism 5 and the conveying effect of the vacuum difference, the glue is potted under good fluidity and bubble-free conditions, thereby achieving a good potting effect.

[0030] Furthermore, in this embodiment, if Figure 3 and Figure 4 As shown, the stirring mechanism 5 includes a stirring disc 51, stirring teeth 52 disposed on the upper surface of the stirring disc 51, and a rotary drive assembly 53 for rotating the stirring disc 51. The stirring disc 51 is rotatably disposed at the bottom of the mixing barrel 1. The rotary drive assembly 53 rotates the stirring disc 51, stirring the rubber material above it via the stirring teeth 52. Preferably, a plurality of stirring teeth 52 are provided, spaced apart along the circumference and radial directions of the stirring disc 51.

[0031] Furthermore, in this embodiment, the rotary drive assembly 53 is a magnetic drive assembly disposed below the mixing barrel 1. The magnetic drive assembly drives the stirring disc 51 to rotate by magnetic force. Compared to an electric drive assembly, the magnetic drive assembly does not need to be in direct contact with the stirring disc 51, that is, it does not need to pass a rotating shaft through the bottom of the mixing barrel 1 to connect to the stirring disc 51. This improves the sealing performance of the stirring disc 51, enabling the rubber material to be stirred in a vacuum environment while avoiding the effects of poor airtightness during the stirring process.

[0032] Furthermore, in this embodiment, if Figure 4 As shown, a tray 54 is provided at the bottom of the stirring disc 51, and the tray 54 is rotatably arranged at the bottom of the stirring barrel 1. The stirring disc 51 is arranged on the tray 54, such as being fixed on the tray 54 by bolts, so as to be easy to disassemble and replace.

[0033] Furthermore, in this embodiment, a blind hole 11 is provided on the inner bottom surface of the mixing barrel 1, and a rotating shaft 55 is provided at the bottom center of the tray 54. The rotating shaft 55 is disposed in the blind hole 11 via a bearing 56. The blind hole 11 does not need to penetrate the bottom wall of the mixing barrel 1, which helps to improve the airtightness of the mixing barrel 1.

[0034] Furthermore, in this embodiment, a pressure detection mechanism 10 is provided on both the mixing barrel 1 and the filling box 2. The pressure detection mechanism 10 is used for air pressure, which is conducive to adjusting the vacuum degree of the pressure detection mechanism 10.

[0035] Furthermore, in this embodiment, an on-off valve 91 is provided on the delivery pipeline 9 to facilitate disconnection of the connection between the mixing barrel 1 and the filling box 2 and to control the start and stop of the filling.

[0036] Furthermore, in this embodiment, a flow regulating valve 92 is provided on the delivery pipeline 9 to facilitate adjusting the flow of the delivery pipeline 9 and to control the flow of the rubber material.

[0037] Furthermore, in this embodiment, the vacuum pressure differential glue potting system further includes a support platform 12 , and the mixing barrel 1 , the potting box 2 , the first vacuum pumping device 3 and the second vacuum pumping device 4 are spaced apart and arranged on the support platform 12 .

[0038] Furthermore, in this embodiment, the adhesive is resin adhesive, such as epoxy resin adhesive.

[0039] Furthermore, in this embodiment, a control module is also included, and the on-off valve 91, the flow regulating valve 92, the temperature control device, the stirring mechanism 5, the first vacuum pumping device 3, the second vacuum pumping device 4, and the pressure detection mechanism 10 are all electrically connected to the control module.

[0040] Furthermore, in this embodiment, the discharge port of the mixing barrel 1 is located at the bottom of the mixing barrel 1. The target workpiece is a circuit board. A door is provided on one side of the potting box 2 for accessing and placing the target workpiece. A workpiece fixing table can be provided within the mixing barrel 1 to hold and secure the workpiece, facilitating potting of the adhesive.

[0041] Example 2: A vacuum pressure differential adhesive potting method is performed using the vacuum pressure differential adhesive potting system of Example 1, comprising the following steps: S1. Preheat the rubber material to a set temperature range and then add it to the mixing barrel 1. At the same time, the stirring mechanism 5 is turned on to keep the rubber material in the mixing barrel 1 in a fluid state, and the temperature control device keeps the rubber material in the mixing barrel 1 within the set temperature range; S2, the first vacuum device 3 and the second vacuum device 4 are turned on, so that the mixing barrel 1 and the filling box 2 are in a vacuum environment; S3, the first vacuum device 3 and the second vacuum device 4 form a vacuum difference between the mixing barrel 1 and the potting box 2 to allow the glue in the mixing barrel 1 to flow to the glue potting component 8, and the glue is potted onto the target workpiece through the glue potting component 8.

[0042] According to the vacuum pressure differential glue potting method, first, the first vacuum pumping device 3 and the second vacuum pumping device 4 respectively vacuum the mixing barrel 1 and the potting box 2, so that a vacuum difference is formed between the mixing barrel 1 and the potting box 2 so that the glue in the mixing barrel 1 flows to the glue potting component 8. Combined with the stirring action of the stirring mechanism 5, it is beneficial to avoid air dissolving in the glue and generating bubbles, thereby improving the potting quality; second, the preheated glue can be added to the mixing barrel 1 by opening the cover 6 or directly through the feeding device 7, so that the glue is quickly added to the mixing barrel 1, and is kept in a fluid state by the stirring mechanism 5 to prevent the glue from agglomerating, which is further beneficial to improving the subsequent potting effect; third, the temperature control device keeps the glue in the mixing barrel 1 within the set temperature range. Combined with the stirring action of the stirring mechanism 5 and the conveying action of the vacuum difference, the glue is potted under good fluidity and bubble-free conditions, thereby achieving a good potting effect.

[0043] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification 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 shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A vacuum pressure differential glue potting system, characterized by: The invention comprises a mixing barrel (1), a potting box (2), a first vacuum pumping device (3), a second vacuum pumping device (4) and a temperature control device, wherein the first vacuum pumping device (3) is connected to the mixing barrel (1), and the second vacuum pumping device (4) is connected to the potting box (2). The mixing barrel (1) is provided with a stirring mechanism (5), a cover plate (6) and / or a feeding device (7) is provided on the top, and a glue potting component (8) is provided in the potting box (2). The discharge port of the mixing barrel (1) is connected to the glue potting component (8) through a conveying pipe (9). The stirring mechanism (5) is used to maintain the glue in the mixing barrel (1) in a flowing state, and the temperature control device is used to keep the glue in the mixing barrel (1) within a set temperature range. The first vacuum pumping device (3) and the second vacuum pumping device (4) are used to form a vacuum difference between the mixing barrel (1) and the potting box (2) so that the glue in the mixing barrel (1) flows to the glue potting component (8), and the glue potting component (8) is used to pot the glue onto a target workpiece.

2. The vacuum pressure differential glue potting system according to claim 1, characterized in that: The stirring mechanism (5) comprises a stirring disc (51), stirring teeth (52) provided on the upper surface of the stirring disc (51), and a rotation drive assembly (53) for driving the stirring disc (51) to rotate. The stirring disc (51) is rotatably provided at the bottom of the stirring barrel (1).

3. The vacuum pressure differential glue potting system according to claim 2, characterized in that: The rotary drive assembly (53) is a magnetic drive assembly provided below the stirring barrel (1).

4. The vacuum pressure differential glue potting system according to claim 2, characterized in that: A tray (54) is provided at the bottom of the stirring plate (51), and the tray (54) is rotatably arranged at the bottom of the stirring barrel (1).

5. The vacuum pressure differential glue potting system according to claim 4, characterized in that: A blind hole (11) is provided on the inner bottom surface of the mixing barrel (1), and a rotating shaft (55) is provided at the bottom center of the tray (54). The rotating shaft (55) is arranged in the blind hole (11) through a bearing (56).

6. The vacuum pressure differential glue potting system according to claim 1, characterized in that: The mixing barrel (1) and the filling box (2) are both provided with a pressure detection mechanism (10).

7. The vacuum pressure differential glue potting system according to claim 1, characterized in that: The delivery pipeline (9) is provided with an on-off valve (91).

8. The vacuum pressure differential glue potting system according to claim 1, characterized in that: The delivery pipeline (9) is provided with a flow regulating valve (92).

9. The vacuum pressure differential glue potting system according to any one of claims 1 to 8, characterized in that: The vacuum pressure differential glue potting system further comprises a support platform (12), and the mixing barrel (1), the potting box (2), the first vacuum pumping device (3) and the second vacuum pumping device (4) are arranged at intervals on the support platform (12).

10. A vacuum pressure differential glue potting method, characterized in that: The vacuum pressure differential glue potting system according to any one of claims 1 to 9 is used, comprising the following steps: S1. Preheat the rubber material to a set temperature range and then add it to the mixing barrel (1). At the same time, the stirring mechanism (5) is turned on to maintain the rubber material in the mixing barrel (1) in a fluid state, and the temperature control device keeps the rubber material in the mixing barrel (1) within the set temperature range; S2, the first vacuum pumping device (3) and the second vacuum pumping device (4) are turned on, so that the mixing barrel (1) and the filling box (2) are in a vacuum environment; S3, the first vacuum pumping device (3) and the second vacuum pumping device (4) form a vacuum difference between the mixing barrel (1) and the potting box (2) so that the glue in the mixing barrel (1) flows to the glue potting component (8), and the glue is potted onto the target workpiece through the glue potting component (8).

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