Vacuum defoaming tank for protective film glue

Abstract

The utility model discloses a vacuum defoaming tank for protective film glue, which comprises a tank body and a vacuum generator which are respectively provided with a feed port and a discharge port, the vacuum generator is communicated with the inside of the tank body through a vacuum extraction opening, and a material conveying pipe is vertically arranged in the central area in the tank body. At least one annular support is installed on the supporting frame and located on the outer side of the circular shell, and a plurality of cutting blades corresponding to the discharging through holes in the circular shell are installed on the inner wall of each annular support. According to the utility model, not only can full mixing of multi-component materials in fluid be realized through circulation of the fluid in the tank body, but also defoaming can be realized by timely discharging gas mixed in the fluid in cooperation with the vacuum generator, and cutting collision to the fluid can be increased in the process that glue circularly falls off; and the fluid mixing uniformity and the defoaming efficiency are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum defoaming tank of protective film glue, belong to the field of glue processing. BACKGROUND

[0002] The protective film is widely used in the production process and use of mobile phones, tablets and electronic components, and the electronic components are generally small and delicate parts, and the produced electronic components need to be packaged and then delivered to other production lines for assembly, because the electronic components are fragile, poor packaging can easily cause damage during transportation, resulting in a large amount of waste and increased production cost, therefore, the electronic components generally need to be attached with protective film before leaving the factory. During the production process of the protective film, a layer of uniform and reliable glue needs to be coated on the surface of the film material. A large amount of bubbles and foam are generated during the production of the glue, which affects the quality of the product. Because the viscosity of the glue is high, these bubbles or foam need to be naturally defoamed for more than half a year or even a year. Therefore, before the glue is coated on the film material, the glue needs to be stirred to ensure the uniformity of the subsequent coating and reduce the defects caused by bubbles. However, the existing technology has a long stirring time and low efficiency. SUMMARY

[0003] The utility model discloses a vacuum defoaming tank of protective film glue, which can not only timely discharge the gas mixed in the fluid to realize defoaming, but also increase the cutting and collision of the fluid during the circulation and falling of the glue, further improving the uniformity of the mixing of the fluid and the defoaming efficiency.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a vacuum defoaming tank of protective film glue, which comprises a tank body and a vacuum generator respectively provided with a feed inlet and a discharge outlet, the vacuum generator is communicated with the inside of the tank body through a vacuum air outlet, a central region in the tank body is vertically provided with a material conveying pipe, the upper end of the material conveying pipe is sealingly connected with the inner wall of the bottom of the tank body, the upper end of the material conveying pipe is installed with a circular shell which is communicated with the material conveying pipe, the lower end of a rotating shaft concentrically arranged in the material conveying pipe is connected with the output shaft of a first motor installed on the bottom surface outside the tank body, the upper end of the rotating shaft is connected with the circular shell and used for driving the circular shell to rotate, a plurality of feed through holes are formed in the side wall of the lower end of the material conveying pipe, a plurality of discharge through holes are formed in the side wall of the circular shell which is concentrically arranged with the tank body and spaced apart along the circumferential direction.

[0005] A second motor opposite to the first motor is installed on the top surface of the outer side of the tank body and directly above the rotating shaft, a lower end of a driving shaft with an upper end connected to an output shaft of the second motor is rotatably connected to the top of the circular shell, an upper end of a support frame arranged in the tank body is connected to the driving shaft and rotatable therewith, a lower end of the support frame is rotatably sleeved on the outer side of the material conveying pipe, at least one annular support is installed on the support frame and on the outer side of the circular shell, and a plurality of cutting blades corresponding to the discharging through holes on the circular shell are installed on the inner wall of each annular support.

[0006] Further improved solutions in the above technical solutions are as follows:

[0007] 1. In the above solution, the feeding port is arranged on the top surface of the tank body, and an inverted conical material guide hopper is arranged in the tank body and above the feeding port, and the outer conical surface of the conical material guide hopper is in sliding contact with the fluid entering the tank body from the feeding port.

[0008] 2. In the above solution, the conical material guide hopper is sleeved on the outer side of the driving shaft and arranged concentrically with the driving shaft.

[0009] 3. In the above solution, a spiral blade is wound on the outer surface of the rotating shaft in the area inside the material conveying pipe.

[0010] 4. In the above solution, a pump body for conveying the fluid in the lower part of the tank body into the circular shell is arranged on one end of the material conveying pipe close to the circular shell, and the fluid is glue containing particulate filler.

[0011] 5. In the above solution, each discharging through hole is a strip-shaped through hole extending in the vertical direction, and the three annular supports are distributed at intervals in the vertical direction.

[0012] 6. In the above solution, each of the driving shaft and the circular shell, the circular shell and the material conveying pipe, and the lower end of the material conveying pipe and the support frame is rotatably connected through a bearing.

[0013] Due to the use of the above technical solutions, the present application has the following advantages compared with the prior art:

[0014] The utility model discloses a vacuum defoaming tank of protective film glue, its side wall on the lower end of conveying pipe is provided with a plurality of feeding through -holes, and the side wall of the circular shell concentric with the tank body is provided with a plurality of discharge through -holes that are distributed along the circumference and are spaced, the top surface on the outside of the tank body and located directly above the rotating shaft is installed with a second motor that rotates reversely with the first motor, the lower end of the drive shaft that is connected with the output shaft of the second motor is rotatably connected with the top of the circular shell, the upper end of the support frame that is arranged in the tank body is connected with the drive shaft and can rotate with it, the lower end of the support frame is rotatably sleeved on the outside of the conveying pipe, and at least one annular support is installed on the support frame and located on the outside of the circular shell, a plurality of cutting pieces that are arranged correspondingly with the discharge through -holes on the circular shell are installed on the inner wall of each annular support, the full mixing of the multi -component material in the fluid can be realized through the circulation of the fluid in the tank body, the gas mixed in the fluid can be discharged in time and defoaming is realized in cooperation with the vacuum generator, and the cutting collision of the fluid can be increased in the process that the glue circulates and falls, and the uniformity of mixing and the defoaming efficiency of the fluid are further improved, and the feeding port is arranged on the top surface of the tank body, an inverted conical material guide hopper is installed above the tank body, the outer conical surface of the conical material guide hopper is in sliding contact with the fluid entering the tank body from the feeding port, the uniform flow of the fluid into the tank body can be ensured, and the damage of the internal components of the tank body due to excessive force concentration can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] ATTACHED Figure 1 It is the structure schematic diagram of the utility model vacuum defoaming tank of protective film glue;

[0016] ATTACHED Figure 2 It is the structure sectional view of the utility model vacuum defoaming tank of protective film glue;

[0017] ATTACHED Figure 3 It is the partial structure sectional view of the utility model vacuum defoaming tank of protective film glue.

[0018] In the above drawing: 100, tank body;101, feeding port;102, discharge port;103, vacuum air outlet;104, support leg;200, vacuum generator;1, conveying pipe;2, circular shell;3, rotating shaft;4, first motor;51, feeding through -hole;52, discharge through -hole;6, spiral blade;7, connecting shaft;8, second motor;9, drive shaft;10, support frame;11, annular support;12, cutting piece;13, conical material guide hopper;14, bearing. DETAILED DESCRIPTION

[0019] The specific embodiments given below can further clearly understand the patent, but they are not the limitation of the patent.

[0020] The embodiment 1 is a vacuum defoaming tank for protective film glue, which comprises a tank body 100 and a vacuum generator 200, the tank body 100 is provided with a feeding port 101 and a discharging port 102, the vacuum generator 200 is communicated with the inside of the tank body 100 through a vacuum air outlet 103, a conveying pipe 1 is vertically arranged in the central area of the tank body 100, the upper end of the conveying pipe 1 is sealingly connected with the inner wall of the bottom of the tank body 100, the upper end of the conveying pipe 1 is provided with a circular shell 2 which is communicated with the conveying pipe 1, the lower end of a rotating shaft 3 which is concentrically arranged in the conveying pipe 1 is connected with the output shaft of a first motor 4 which is arranged on the bottom surface of the outside of the tank body 100, the upper end of the rotating shaft 3 is connected with the circular shell 2 and is used for driving the circular shell 2 to rotate, a plurality of feeding through holes 51 are arranged on the side wall of the lower end of the conveying pipe 1, a plurality of discharging through holes 52 which are spaced along the circumference are arranged on the side wall of the circular shell 2 which is concentrically arranged with the tank body 100.

[0021] A second motor 8 which rotates reversely with the first motor 4 is arranged on the top surface of the outside of the tank body 100 and is located directly above the rotating shaft 3, the lower end of a driving shaft 9 which is connected with the output shaft of the second motor 8 is rotationally connected with the top of the circular shell 2, the upper end of a support frame 10 which is arranged in the tank body 100 is connected with the driving shaft 9 and can rotate with the driving shaft 9, the lower end of the support frame 10 is rotationally sleeved on the outside of the conveying pipe 1, at least one annular support 11 is arranged on the support frame 10 and is located on the outside of the circular shell 2, a plurality of cutting pieces 12 which are correspondingly arranged with the discharging through holes 52 on the circular shell 2 are arranged on the inner wall of each annular support 11.

[0022] Firstly, the fluid is poured into the tank body through the feeding port 101, then the inside of the tank body 100 is pumped through the vacuum air outlet 103 until vacuum, the fluid falls on the bottom of the tank body 100 after entering the tank body 100, the first motor 4 is started to drive the rotating shaft 3 to rotate the spiral blade 6, the fluid in the lower layer of the tank body 100 enters the conveying pipe 1 through the feeding through holes 51 and is lifted upwards to the circular shell 2 under the action of the rotating spiral blade 6, the second motor 8 is started to drive the circular shell 2 to rotate, the fluid which is transported to the circular shell 2 is thrown out from the discharging through holes 52 on the side wall of the circular shell 2 and is backflowed downwards after impacting the cutting pieces.

[0023] The feeding port 101 is arranged on the top surface of the tank body 100, an inverted conical material guiding hopper 13 is arranged in the tank body 100 and is located above the feeding port 101, the outer conical surface of the conical material guiding hopper 13 is in sliding contact with the fluid which enters the tank body 100 from the feeding port 101, the conical material guiding hopper 13 is sleeved on the outside of the driving shaft 9 and is concentrically arranged with the driving shaft 9.

[0024] The rotating shaft 3 is provided with a spiral blade 6 on the outer surface of the area inside the conveying pipe 1.

[0025] Each of the discharge holes 52 is a strip-shaped hole extending in the vertical direction, and the three annular supports 11 are distributed in the vertical direction.

[0026] The vacuum degassing tank for protective film glue comprises a tank body 100 and a vacuum generator 200 respectively provided with an inlet 101 and an outlet 102, the vacuum generator 200 is communicated with the inside of the tank body 100 through a vacuum air outlet 103, a conveying pipe 1 is vertically arranged in the central area of the tank body 100, the upper end of the conveying pipe 1 is sealingly connected with the inner wall of the bottom of the tank body 100, the upper end of the conveying pipe 1 is provided with a circular shell 2 which is communicated with the conveying pipe 1, the lower end of a rotating shaft 3 concentrically arranged in the conveying pipe 1 is connected with the output shaft of a first motor 4 arranged on the bottom of the tank body 100, the upper end of the rotating shaft 3 is connected with the circular shell 2 and used to drive the rotation of the circular shell 2, a plurality of inlet holes 51 are arranged on the side wall of the lower end of the conveying pipe 1, a plurality of discharge holes 52 are arranged on the side wall of the circular shell 2 which is concentrically arranged with the tank body 100 and distributed in the circumferential direction.

[0027] A second motor 8 is arranged on the top of the tank body 100 and above the rotating shaft 3 and rotates reversely with the first motor 4, the lower end of a driving shaft 9 connected with the output shaft of the second motor 8 is rotationally connected with the top of the circular shell 2, the upper end of a support frame 10 arranged in the tank body 100 is connected with the driving shaft 9 and can rotate with the driving shaft 9, the lower end of the support frame 10 is rotatably sleeved on the outside of the conveying pipe 1, at least one annular support 11 is arranged on the support frame 10 and outside the circular shell 2, a plurality of cutting blades 12 are arranged on the inner wall of each annular support 11 and correspond to the discharge holes 52 of the circular shell 2.

[0028] The reciprocating operation realizes the circulation of all the fluid in the tank body 100, so that the fluid is continuously circulated and contacted with the vacuum environment in the process of impacting the cutting blades in the tank body 100, and the small bubbles contained in the fluid are continuously discharged and discharged outward through the vacuum air outlet 103, realizing efficient and thorough degassing of the fluid.

[0029] The driving shaft 9 and the circular shell 2, the circular shell 2 and the conveying pipe 1, and the lower end of the conveying pipe 1 and the support frame 10 are respectively rotationally connected through a bearing 14.

[0030] The upper end of the rotating shaft 3 is fixedly connected with the top surface of the circular shell 2 through a connecting shaft 7 arranged in the circular shell 2.

[0031] The vacuum generator 200 is arranged at one side edge of the top surface of the tank body 100, the feeding port 101 is arranged at another side edge of the top surface of the tank body 100, and the vacuum air outlet 103 is arranged on the side wall of the upper portion of the tank body 100.

[0032] The bottom of the tank body 100 is provided with at least three supporting legs 104 arranged at intervals in the circumferential direction, and a plurality of feeding through holes 51 are arranged at intervals in the circumferential direction, each of the feeding through holes 51 being a strip-shaped through hole extending in the axial direction of the material conveying pipe 1.

[0033] The inner side wall of the tank body 100 is a cylindrical surface, and the outer circumferential surface of the annular support 11 arranged concentrically with the tank body 100 is arranged close to the inner side wall of the tank body 100.

[0034] Working principle:

[0035] Before the adhesive layer is coated on the film material, the glue is first stirred and defoamed to ensure the coating effect;

[0036] The glue is injected from the feeding port 101 at the top of the tank body, and at the same time, the tank body is pumped by the vacuum air outlet 103 until vacuum is achieved;

[0037] The glue dispersed into the tank body under the guidance of the conical material guiding hopper 13 falls to the bottom of the tank body, enters the material conveying pipe 1 from the feeding through hole 51 at the lower end of the material conveying pipe 1, and then the first motor 4 drives the rotating shaft 3 to rotate the spiral blade 6, the glue in the material conveying pipe 1 is lifted upward to the circular shell 2 under the action of the rotating spiral blade, and then the first motor 4 drives the circular shell 2 to rotate, the glue transported into the circular shell 2 is thrown out from the plurality of discharging through holes 52 on the side wall of the circular shell 2 and collides with the rotating cutting blade 12 on the outside to flow back downward, and the second motor 8 drives the support frame 10 to rotate the cutting blade 12 on the upper annular support 11.

[0038] Through the circulation of the glue and the increase of the cutting and collision of the glue in the process of circulating and falling, the glue is fully contacted with the vacuum environment in the process of continuous circulation and collision with the cutting blade 12 in the tank body, and the small bubbles contained in the glue are continuously discharged and discharged outward through the vacuum port, realizing efficient and thorough defoaming and uniform mixing of the glue.

[0039] The vacuum defoaming tank adopting the protective film glue can realize the sufficient mixing of the multi-component materials in the fluid by circulating the fluid in the tank body, can timely discharge the gas mixed in the fluid to realize defoaming in cooperation with the vacuum generator, can further improve the uniformity of mixing and the defoaming efficiency of the fluid by increasing the cutting and collision of the fluid in the process of circulating and falling of the glue, and can ensure that the fluid is evenly dispersed and flows into the tank body, thereby avoiding damage to the internal components of the tank body due to excessive concentration of force.

[0040] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A vacuum defoaming tank for protective film glue, comprising: a tank body (100) and a vacuum generator (200) respectively provided with a feeding port (101) and a discharging port (102), the vacuum generator (200) being communicated with the inside of the tank body (100) through a vacuum air outlet (103), and a material conveying pipe (1) being vertically arranged in the central region of the tank body (100), the upper end of the material conveying pipe (1) being sealingly connected with the inner wall of the bottom of the tank body (100), and a circular shell (2) being arranged on the upper end of the material conveying pipe (1) and being communicated with the material conveying pipe (1), characterized in that: The lower end of a rotating shaft (3) concentrically arranged in the material conveying pipe (1) is connected with the output shaft of a first motor (4) installed on the bottom surface of the tank body (100) outside, the upper end of the rotating shaft (3) is connected with the circular shell (2) and used to drive the circular shell (2) to rotate, a plurality of feeding through holes (51) are arranged on the side wall of the lower end of the material conveying pipe (1), a plurality of discharging through holes (52) distributed along the circumference are arranged on the side wall of the circular shell (2) arranged concentrically with the tank body (100). ​ A second motor (8) reversely rotating with the first motor (4) is installed on the top surface of the tank body (100) and located directly above the rotating shaft (3), the lower end of a driving shaft (9) with the upper end connected with the output shaft of the second motor (8) is rotationally connected with the top of the circular shell (2), the upper end of a support frame (10) arranged in the tank body (100) is connected with the driving shaft (9) and can rotate with the driving shaft (9), the lower end of the support frame (10) is rotatably sleeved on the outside of the material conveying pipe (1), at least one annular support (11) is installed on the support frame (10) and located outside the circular shell (2), a plurality of cutting blades (12) corresponding to the discharging through holes (52) on the circular shell (2) are arranged on the inner wall of each annular support (11).

2. The vacuum devolatilization tank for a protective film adhesive according to claim 1, characterized by: The feeding port (101) is arranged on the top surface of the tank body (100), an inverted conical material guiding hopper (13) is installed in the tank body (100) and located above, the outer conical surface of the conical material guiding hopper (13) is in sliding contact with the fluid entering the tank body (100) from the feeding port (101).

3. The vacuum devolatilization tank for protective film adhesive according to claim 2, characterized by: The conical material guiding hopper (13) is sleeved on the outside of the driving shaft (9) and arranged concentrically with the driving shaft (9).

4. The vacuum devolatilization tank for a protective film adhesive according to claim 1, characterized by: A spiral blade (6) is arranged on the outer surface of the rotating shaft (3) in the area inside the material conveying pipe (1).

5. The vacuum devolatilization tank for protective film adhesive according to claim 1, characterized by: A pump body for conveying the fluid in the lower part of the tank body (100) into the circular shell (2) is installed on one end of the material conveying pipe (1) close to the circular shell (2), and the fluid is glue containing particulate filler.

6. The vacuum devolatilization tank for protective film adhesive according to claim 1, characterized by: Each discharging through hole (52) is a strip-shaped through hole extending in the vertical direction, and the three annular supports (11) are distributed in the vertical direction.

7. The vacuum devolatilization tank for protective film adhesive according to claim 1, characterized by: The driving shaft (9) and the circular shell (2), the circular shell (2) and the material conveying pipe (1), and the lower end of the support frame (10) and the material conveying pipe (1) are each rotationally connected through a bearing (14).

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