Epoxy resin encapsulating material fluidization testing device

Abstract

The utility model relates to an epoxy resin encapsulating material fluidization testing device, and relates to the technical field of high polymer material detection equipment, the epoxy resin encapsulating material fluidization testing device comprises a base, a cylinder and a gas supply assembly; the cylinder body is arranged on the base and is connected to the base in a reciprocating sliding manner along the depth direction of the cylinder body; the air supply assembly comprises an air inlet plate and an air inlet pipe, the air inlet plate is arranged in the barrel, a plurality of air holes are formed in the air inlet plate in the depth direction of the barrel in a penetrating mode, filter cloth is arranged above the air inlet plate, one end of the air inlet pipe is directly or indirectly communicated with the barrel, the air inlet pipe is arranged on the side, close to the bottom wall of the barrel, of the air inlet plate, and the other end of the air inlet pipe is connected with the air source box. The method has the effect of improving the uniformity degree of the airflow in the testing process.

Description

Technical Field

[0001] This application relates to the field of polymer material testing equipment, and in particular to a device for testing the fluidization properties of epoxy resin encapsulants. Background Technology

[0002] In the electronic packaging industry, the performance of epoxy resin encapsulants directly affects product quality and reliability. To ensure they meet process requirements, fluidization testing has become a critical step. In recent years, with the advancement of industrial technology, various automated equipment has been gradually applied to this field, greatly improving production efficiency and testing accuracy. However, despite the wide variety of fluidization testing devices on the market and their ability to mitigate the shortcomings of traditional methods to some extent, many challenges remain, particularly in terms of testing accuracy and ease of operation, which require further optimization.

[0003] Currently, the testing of the fluidization properties of epoxy resin encapsulants mainly employs two types of devices: manual stirring and static airflow. The former relies on manual intervention to adjust the sample's state; while inexpensive and easy to implement, it often suffers from poor repeatability and data dispersion due to significant human factors. The latter utilizes a constant airflow applied to the sample surface to assess its flowability, offering more stable parameter feedback compared to the former due to its greater randomness. However, this design also has drawbacks, such as unreasonable internal airflow organization leading to localized pressure imbalances and complex overall structures that hinder maintenance.

[0004] Regarding the aforementioned technologies, under current technological conditions, the lack of a reasonable airflow distribution mechanism and excessive reliance on human intervention limit the accuracy and stability of commonly used epoxy resin encapsulation fluidization testing devices. Furthermore, the absence of necessary physical auxiliary measures (such as vibration) prevents the accurate reproduction of dynamic characteristics in real-world application scenarios, thus affecting the validity of the final judgment results. Utility Model Content

[0005] To improve the uniformity of airflow during testing, this application provides a device for testing the fluidity of epoxy resin encapsulants.

[0006] This application provides a fluidization property testing device for epoxy resin encapsulants, which adopts the following technical solution:

[0007] An epoxy resin encapsulation fluidization test device includes a base, a cylinder, and an air supply assembly.

[0008] The cylindrical body is disposed on the base, and the cylindrical body is slidably connected to the base along its own depth direction;

[0009] The air supply assembly comprises an air inlet plate and an air inlet pipe, the air inlet plate is arranged in the cylinder, a plurality of air holes are formed through the air inlet plate along the depth direction of the cylinder, a filter cloth is arranged above the air inlet plate, one end of the air inlet pipe is directly or indirectly communicated with the cylinder, the air inlet pipe is arranged on the side of the air inlet plate close to the bottom wall of the cylinder, and the other end of the air inlet pipe is connected with the gas source box.

[0010] By adopting the above technical scheme, the powder material (i.e. the epoxy resin encapsulating material) is placed on the filter cloth in the cylinder, the air inlet pipe is connected with the gas source box, the air inlet pipe introduces the gas into the cylinder, the gas passes through the plurality of air holes on the air inlet plate and enters the powder material on the filter cloth, the gas blows the powder material to generate a dynamic fluidized state of the powder material, and the cylinder generates back-and-forth sliding along the depth direction of the cylinder to drive the cylinder to generate vertical vibration, thereby enhancing the fluidization effect.

[0011] Optionally, the air supply assembly further comprises a mounting seat, the mounting seat comprises a mounting sleeve and a closure, the mounting sleeve is fixedly sleeved on the side of the cylinder close to the base, the inner cavity of the mounting sleeve is communicated with the inner cavity of the cylinder, the air inlet plate is fixedly connected in the mounting sleeve, the closure is detachably connected to the mounting sleeve to close the mounting sleeve, the filter cloth is clamped between the mounting sleeve and the closure, and one end of the air inlet pipe is communicated with the side wall of the mounting sleeve.

[0012] By adopting the above technical scheme, the detachable mounting sleeve and the closure are arranged, the filter cloth is fixed by the closure, and the filter cloth is convenient to replace.

[0013] Optionally, the mounting sleeve and the closure are fixedly connected through a fixing member.

[0014] By adopting the above technical scheme, the mounting sleeve and the closure are fixed through the fixing member to clamp the filter cloth.

[0015] Optionally, a rotating plate is arranged in the cylinder, the outer peripheral wall of the rotating plate is attached to the inner peripheral wall of the cylinder, the rotating plate is arranged above the filter cloth, the rotating plate is rotationally connected to the cylinder, the rotating plate is parallel to the depth direction of the cylinder along the rotation axis of the cylinder, and a plurality of through holes are formed through the rotating plate along the depth direction of the cylinder.

[0016] By adopting the above technical scheme, the rotating plate is arranged, a plurality of through holes are arranged on the rotating plate, the powder gas is more uniformly distributed, the fluidization effect is further optimized, and the rotation of the rotating plate can make the gas more uniformly distributed.

[0017] Optionally, the first driving assembly is arranged between the base and the first mounting seat, and is configured to drive the sliding of the barrel along the depth direction of the barrel.

[0018] By adopting the above technical scheme, the first driving assembly is arranged to drive the barrel to slide along the depth direction of the barrel, thereby generating vibration of the barrel along the depth direction of the barrel, and enhancing the fluidization state of the powder material.

[0019] Optionally, the second driving assembly comprises a rotating shaft, a second motor, a belt and two pulleys, the rotating shaft is parallel to the depth direction of the barrel, one end of the rotating shaft is fixedly connected to the rotating plate after penetrating through the bottom wall of the barrel, the other end of the rotating shaft is located outside the barrel, the rotating shaft is rotatably connected to the barrel, the second motor is directly or indirectly fixedly connected to the base, one of the pulleys is fixedly sleeved on the output shaft of the second motor, the other of the pulleys is fixedly sleeved on the end of the rotating shaft close to the base, and the belt is wound around the two pulleys.

[0020] By adopting the above technical scheme, the second driving assembly is arranged, the second motor drives the rotating shaft to rotate through the belt and the pulley, thereby driving the rotating plate to rotate, so that the through holes on the rotating plate distribute the gas at different positions, further optimizing the fluidization effect of the powder material, and improving the overall working efficiency. At the same time, the uniform rotation of the rotating plate effectively prevents the accumulation of powder, and ensures the stability of the fluidization process.

[0021] Optionally, the second driving assembly comprises a rotating shaft, a second motor, a belt and two pulleys, the rotating shaft is parallel to the depth direction of the barrel, one end of the rotating shaft is fixedly connected to the rotating plate after penetrating through the bottom wall of the mounting sleeve and the air inlet plate in sequence, the other end of the rotating shaft is located outside the barrel, the rotating shaft is rotatably connected to the barrel, the second motor is fixedly connected to the base, one of the pulleys is fixedly sleeved on the output shaft of the second motor, the other of the pulleys is fixedly sleeved on the end of the rotating shaft close to the base, and the belt is wound around the two pulleys.

[0022] By adopting the above technical scheme, the second motor is arranged to drive the rotating plate to rotate through the driving belt and the pulley, thereby realizing the uniform distribution of the gas.

[0023] Optionally, the air inlet pipe is communicated with an air pressure adjusting valve.

[0024] By adopting the above technical scheme, the air pressure adjusting valve is arranged on the air inlet pipe to adjust the air pressure, so that the gas can be stably output under different working conditions, further optimizing the fluidization effect of the powder material, and improving the operation flexibility and adaptability of the system.

[0025] To sum up, the application includes at least one of the following beneficial technical effects:

[0026] 1. The application sets up a gas supply assembly. The powder material (i.e. epoxy resin encapsulating material) is placed on the filter cloth in the cylinder. The gas source box is connected by the air inlet pipe. The air inlet pipe introduces the gas into the cylinder. The gas passes through the multiple air holes on the air inlet plate and enters the powder material on the filter cloth. The gas blows the powder material, so that the powder material generates a dynamic fluidized state. The cylinder generates back-and-forth sliding along the depth direction of the cylinder, which drives the cylinder to generate vertical vibration, thereby enhancing the fluidization effect.

[0027] 2. The application sets up a rotating plate to improve the uniformity of gas distribution in the cylinder by rotating the rotating plate, and to improve the uniformity of powder material distribution. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall structure schematic diagram of the epoxy resin encapsulating material fluidization test device of the application;

[0029] Figure 2 is the structure schematic diagram of the air inlet plate and the filter cloth of the application;

[0030] Figure 3 is the structure schematic diagram of the air inlet assembly of the application;

[0031] Figure 4 is the structure schematic diagram of the rotating plate of the application;

[0032] Figure 5 is the structure schematic diagram of the first driving assembly and the second driving assembly of the application.

[0033] BRIEF DESCRIPTION OF DRAWINGS 1. Base; 2. Cylinder; 3. Gas supply assembly; 31. Air inlet plate; 311. Filter cloth; 312. Air hole; 32. Air inlet pipe; 321. Gas pressure regulating valve; 33. Gas source box; 34. First mounting seat; 341. Mounting sleeve; 342. Closure; 35. Fixing piece; 4. Rotating plate; 41. Through hole; 5. First driving assembly; 51. First motor; 52. Connecting plate; 53. Connecting rod; 54. Elastic piece; 55. Second mounting seat; 6. Second driving assembly; 61. Rotating shaft; 62. Second motor; 63. Belt; 64. Pulley. DETAILED DESCRIPTION

[0034] The application will be further described below in combination with the accompanying drawings. Figures 1-5 The application will be further described below in combination with the accompanying drawings.

[0035] The application discloses an epoxy resin encapsulating material fluidization test device. Referring to the accompanying drawings, the application discloses an epoxy resin encapsulating material fluidization test device. Figure 1 and Figure 2, the epoxy resin encapsulating material fluidity test device includes a base 1, a cylinder 2 and a gas supply assembly 3, the cylinder 2 is arranged on the base 1, in the embodiment, the cylinder 2 is in a cylindrical shape, the cylinder 2 is slidably connected to the base 1 along the depth direction of the cylinder 2, the gas supply assembly 3 includes a gas inlet plate 31 and a gas inlet pipe 32, the gas inlet plate 31 is arranged in the cylinder 2, a plurality of gas holes 312 are formed in the gas inlet plate 31 along the depth direction of the cylinder 2, a filter cloth 311 is arranged on the gas inlet plate 31, one end of the gas inlet pipe 32 is directly or indirectly communicated with the cylinder 2, and the gas inlet pipe 32 is arranged on the side of the gas inlet plate 31 close to the bottom wall of the cylinder 2, and the other end is connected with a gas source box 33, the powder material (i.e. the epoxy resin encapsulating material) is placed on the filter cloth 311 in the cylinder 2, the gas source box 33 is connected with the gas inlet pipe 32, the gas inlet pipe 32 introduces gas into the cylinder 2, the gas passes through the plurality of gas holes 312 on the gas inlet plate 31 and enters the powder material on the filter cloth 311, the gas blows the powder material to generate a dynamic fluidized state of the powder material, and the cylinder 2 generates reciprocating sliding along the depth direction to generate vertical vibration of the cylinder 2, thereby enhancing the fluidization effect.

[0036] Referring to Figure 2 , in order to support the powder material, the number of meshes of the filter cloth 311 is large in the embodiment to support the powder material.

[0037] Referring to Figure 1 , in order to adjust the gas pressure, the gas inlet pipe 32 is communicated with a gas pressure regulating valve 321.

[0038] Referring to Figure 1 , Figure 2 and Figure 3 , in order to fix the filter cloth 311, the gas supply assembly 3 further includes a first mounting seat 34, the first mounting seat 34 includes a mounting sleeve 341 and a closure 342, the mounting sleeve 341 is fixedly sleeved on the side of the cylinder 2 close to the base 1, the inner cavity of the mounting sleeve 341 is communicated with the inner cavity of the cylinder 2, the gas inlet plate 31 is fixedly connected in the mounting sleeve 341, the closure 342 is detachably connected with the mounting sleeve 341 to close the mounting sleeve 341, the filter cloth 311 is clamped between the mounting sleeve 341 and the closure 342, one end of the gas inlet pipe 32 is communicated with the side wall of the mounting sleeve 341, the gas is introduced into the mounting sleeve 341 from the gas inlet pipe 32, and further blows the powder material through the gas holes 312 of the gas inlet plate 31, by detachably connecting the closure 342 with the mounting sleeve 341 and clamping the filter cloth 311 between the mounting sleeve 341 and the closure 342, the fixation of the filter cloth 311 is realized.

[0039] Referring to Figure 3Specifically, the mounting sleeve 341 is fixedly connected with the closure 342 through the fixing member 35. In the embodiment, a plurality of fixing members 35 are arranged along the circumference of the mounting sleeve 341, and the fixing member 35 is a screw, thereby realizing the connection between the mounting sleeve 341 and the closure 342.

[0040] With reference to Figure 4 In order to further improve the uniform distribution of the powder material and the gas, the rotating plate 4 is arranged in the cylinder 2. The outer circumferential wall of the rotating plate 4 is attached to the inner circumferential wall of the cylinder 2. The rotating plate 4 is arranged above the filter cloth 311 and has a space between the rotating plate 4 and the filter cloth 311. The rotating plate 4 is rotationally connected to the cylinder 2 and parallel to the depth direction of the cylinder 2 along the rotation axis 61 of the cylinder 2. A plurality of through holes 41 are arranged in the depth direction of the cylinder 2. The powder material is placed on the rotating plate 4 and falls onto the filter cloth 311 through the through holes 41. The rotating plate 4 rotates along the cylinder 2 to uniformly distribute the powder material in the cylinder 2 and uniformly distribute the gas in the cylinder 2.

[0041] With reference to Figure 5 In order to drive the cylinder 2 to slide along the depth direction of the cylinder 2, the epoxy resin encapsulation material fluidity testing device further comprises a first driving assembly 5 arranged between the base 1 and the first mounting seat 34. The first driving assembly 5 is used to drive the cylinder 2 to slide along the depth direction of the cylinder 2. The first driving assembly 5 comprises a first motor 51, a connecting plate 52, a connecting rod 53 and an elastic member 54. In the embodiment, the first motor 51 is a vibration motor. The first motor 51 is fixedly connected to the base 1 through a second mounting seat 55. The second mounting seat 55 is fixedly connected to the top of the base 1. The first motor 51 is arranged on the second mounting seat 55. The output shaft (not shown in the figure) of the first motor 51 is perpendicular to the depth direction of the cylinder 2. A plurality of connecting rods 53 are arranged along the circumference of the second mounting seat 55. The connecting rods 53 are parallel to the depth direction of the cylinder 2. One end of the connecting rod 53 is fixedly connected to the bottom wall of the mounting sleeve 341. The connecting plate 52 is fixedly sleeved on the connecting rod 53, and the other end of the connecting rod 53 penetrates through the connecting plate 52. The connecting plate 52 is arranged above the first motor 51. The elastic member 54 is arranged between the connecting rod 53 and the second mounting seat 55. The elastic member 54 has a force to drive the connecting plate 52 to move towards the side close to the second mounting seat 55 under the recoverable deformation. In the embodiment, the elastic member 54 is a compression spring. An eccentric block (not shown in the figure) is arranged on the output shaft of the first motor 51. The first motor 51 drives the eccentric block to rotate. The eccentric block contacts the connecting plate 52 and drives the connecting plate 52 to vibrate up and down, further driving the connecting rod 53 to slide up and down. In the embodiment, the vibration motor is the prior art in the field and the specific structure is not described in detail.

[0042] With reference to Figure 4 and Figure 5, in order to drive the rotating plate 4 to rotate, the epoxy encapsulating material fluidity testing device further comprises a second driving assembly 6 for driving the rotating plate 4 to rotate, specifically, the second driving assembly 6 comprises a rotating shaft 61, a second motor 62, a belt 63 and two pulleys 64, the rotating shaft 61 is parallel to the depth direction of the cylinder 2, one end of the rotating shaft 61 is fixedly connected to the rotating plate 4 in sequence through the bottom wall of the mounting sleeve 341 and the air inlet plate 31, and the other end is located outside the cylinder 2, the rotating plate 4 is fixedly sleeved on the rotating shaft 61, and the rotating shaft 61 is rotatably connected to the cylinder 2, the second motor 62 is fixedly connected to the base 1, one of the two pulleys 64 is fixedly sleeved on the output shaft of the second motor 62, the other pulley 64 is fixedly sleeved on one end of the rotating shaft 61 close to the base 1, the belt 63 is wound on the two pulleys 64, the second motor 62 drives the pulley 64 to rotate, and power is transmitted to the rotating shaft 61 through the belt 63, so that the rotating plate 4 is rotated, and the powder material is uniformly covered on the filter cloth 311, and the fluidization effect is improved.

[0043] With reference to Figure 5 In the embodiment, the vibration amplitude of the vibration motor is 2-5mm, the thickness of the belt 63 is less than the groove depth of the pulley 64, the vibration of the vibration motor does not affect the transmission stability of the belt 63, and when the vibration motor operates, the belt 63 will not fall off the pulley 64, so that the rotating plate 4 rotates stably.

[0044] The implementation principle of the epoxy encapsulating material fluidity testing device in the embodiment is as follows: the powder material falls through the through hole 41 of the rotating plate 4 to the filter cloth 311, and is supported by the filter cloth 311, the gas inlet pipe 32 introduces gas into the mounting sleeve 341, and the gas further penetrates through the filter cloth 311 through the plurality of air holes 312 on the air inlet plate 31 to blow the powder material, the first driving assembly 5 is started to make the cylinder 2 vibrate in the vertical direction, so that the fluidization efficiency of the powder material is improved, the second motor 62 is started to drive the rotating shaft 61 to rotate through the belt 63 and the pulley 64, and the rotating plate 4 is further driven to rotate, so that the uniformity of the powder material and the gas flow is improved.

[0045] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An epoxy encapsulant fluidity test apparatus, characterized by: Base (1) and cylinder (2) and gas supply assembly (3) are included. The cylinder (2) is provided on the base (1), and the cylinder (2) is slidably connected to the base (1) along the depth direction of the cylinder (2). The gas supply assembly (3) includes an air inlet plate (31) and an air inlet pipe (32), the air inlet plate (31) is provided in the cylinder (2), a plurality of air holes (312) are provided in the air inlet plate (31) along the depth direction of the cylinder (2), a filter cloth (311) is provided above the air inlet plate (31), one end of the air inlet pipe (32) is directly or indirectly communicated with the cylinder (2), and the other end is connected with a gas source box (33).

2. The fluidity test device for epoxy encapsulant according to claim 1, characterized in that: The gas supply assembly (3) further includes a first mounting seat (34), the first mounting seat (34) includes a mounting sleeve (341) and a closure (342), the mounting sleeve (341) is fixedly sleeved on one side of the cylinder (2) close to the base (1), the inner cavity of the mounting sleeve (341) is communicated with the inner cavity of the cylinder (2), the air inlet plate (31) is fixedly connected in the mounting sleeve (341), the closure (342) is detachably connected with the mounting sleeve (341) to close the mounting sleeve (341), the filter cloth (311) is clamped between the mounting sleeve (341) and the closure (342), and one end of the air inlet pipe (32) is communicated with the side wall of the mounting sleeve (341).

3. The fluidity test device for epoxy encapsulant according to claim 2, wherein: The mounting sleeve (341) and the closure (342) are fixedly connected through a fixing piece (35).

4. The fluidity test device for epoxy encapsulant according to claim 2, wherein: The cylinder (2) is provided with a rotating plate (4), the outer peripheral wall of the rotating plate (4) is attached to the inner peripheral wall of the cylinder (2), the rotating plate (4) is provided above the filter cloth (311), the rotating plate (4) is rotatably connected to the cylinder (2), and the rotating plate (4) is parallel to the depth direction of the cylinder (2) along the rotating shaft (61) line of the cylinder (2), a plurality of through holes (41) are provided in the rotating plate (4) along the depth direction of the cylinder (2).

5. The fluidity test device for epoxy encapsulant according to claim 2, wherein: Further comprising a first driving assembly (5), the first driving assembly (5) is arranged between the base (1) and the first mounting seat (34), and the first driving assembly (5) is used for driving the cylinder (2) to slide along the depth direction of the cylinder (2).

6. The fluidity test device for epoxy encapsulant according to claim 4, wherein: Further comprising a second driving assembly (6), the second driving assembly (6) is used for driving the rotating plate (4) to rotate.

7. The fluidity test device for epoxy encapsulant according to claim 6, wherein: Said second driving assembly (6) includes a rotating shaft (61), a second motor (62), a belt (63) and two pulleys (64), one end of the rotating shaft (61) is sequentially fixedly connected to the rotating plate (4) through the bottom wall of the mounting sleeve (341) and the air inlet plate (31), the other end of the rotating shaft (61) is located outside the cylinder (2), the rotating shaft (61) is rotatably connected to the cylinder (2), the second motor (62) is fixedly connected to the base (1), one of the pulleys (64) is fixedly sleeved with the output shaft of the second motor (62), the other of the pulleys (64) is fixedly sleeved with one end of the rotating shaft (61) close to the base (1), and the belt (63) is wound on the two pulleys (64).

8. The fluidity test device for epoxy encapsulant according to claim 1, wherein: The air inlet pipe (32) is communicated with an air pressure adjusting valve (321).

Images