Chip packaging device and method

Abstract

The invention provides a chip packaging device and method.The chip packaging device comprises a control case, a driving mold closing mechanism, two fluid one-way valves, two fluid extrusion mechanisms, a chip driving mechanism, a melt cavity, a lower mold assembly, an upper mold assembly and a mold closing plate, and the two fluid extrusion mechanisms are installed on the upper side wall of the control case; the two fluid one-way valves are connected to the output ends of the two fluid extrusion mechanisms through flanges correspondingly. The problem that in the high-speed packaging process, fluid is subjected to turbulence caused by multidirectional pressure under the condition that the fluid enters the piston and is not stable is solved, the filling and extruding processes are executed through flow division, the stability of the fluid is guaranteed, the stable state of the packaging fluid is guaranteed through the centrifugal effect before the packaging fluid is extruded into a melt cavity, and the packaging efficiency is improved. And the packaging quality of the microelectronic chip is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic packaging, in particular to a chip packaging device and method. BACKGROUND

[0002] In the field of electronic packaging, vertical injection is a packaging process that refers to placing the device in the packaging mold and immediately filling it with injection to form a packaging shell. This process has the characteristics of high efficiency and speed, and can meet the needs of mass production. At the same time, the vertical injection packaging process can also provide good protection and support, improving the mechanical strength and reliability of the device. Therefore, in the field of electronic manufacturing, vertical injection packaging process is widely used in the packaging of various miniaturized and high-integration devices.

[0003] The existing vertical injection packaging equipment generally stores the completely plasticized packaging fluid in the piston device, and then cooperates the piston device with the eccentric crank to drive the eccentric crank to drive the upper mold to cover the surface of the lower mold, and at the same time, the movable end of the piston is lowered to press the fluid stored in the piston device into the mold cavity of the upper and lower molds. After the packaging fluid is cooled and formed, the eccentric crank drives the upper mold and the lower mold to separate, and the microelectronic driving device drives the next microelectronic chip to move to the lower mold for injection packaging.

[0004] This type of equipment uses the high cooperation of eccentric crank and piston injection equipment to speed up the injection speed of packaging fluid, ensuring the efficiency of vertical injection precision packaging and greatly improving the production efficiency. However, the person skilled in the art finds that the packaging quality of microelectronic chips may have certain problems when using this type of equipment: Since the packaging fluid enters the piston through the one-way valve and then drives the piston rod into the piston cavity for storage, although the one-way valve is closed when the eccentric crank rotates and drives the piston rod, the packaging process is carried out at high speed, which causes the packaging fluid to still be in a flowing and unstable state even if the injection channel of the packaging fluid into the piston cavity is closed. At this time, the packaging fluid is extruded by the eccentric crank, and the speed and pressure of the fluid change rapidly in space and time, which causes the packaging fluid to easily form turbulent flow, thereby causing the packaging material to form uneven coverage on the surface of the object being packaged, affecting the packaging quality. Therefore, the person skilled in the art proposes a chip packaging device and method to solve the above problems. SUMMARY

[0005] (I) Technical problems solved

[0006] To address the shortcomings of existing technologies, this invention provides a chip packaging device and method that solves the problem of turbulence caused by multi-directional pressure when the fluid is unstable inside the piston during high-speed packaging. By splitting the filling and extrusion processes, the stability of the fluid is ensured, and centrifugal action ensures that the packaging fluid is in a stable state before being extruded into the melt cavity, thereby improving the packaging quality of microelectronic chips.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a chip packaging device, comprising a control chassis, a drive mold closing mechanism, two fluid check valves, two fluid extrusion mechanisms, a chip drive mechanism, a melt chamber, a lower mold assembly, an upper mold assembly, and a mold closing plate. The two fluid extrusion mechanisms are mounted on the upper side wall of the control chassis. The two fluid check valves are respectively connected to the output ends of the two fluid extrusion mechanisms via flanges. Flow stabilizing components are respectively connected to the output ends of the two fluid check valves via flanges. Piston assemblies are mounted on the upper side walls of the two flow stabilizing components at their adjacent ends. Connecting air pipes are fixedly connected to the lower position of the adjacent side walls of the two piston assemblies. Variable pressure fluid delivery pipes are respectively fixedly connected to the other ends of the two connecting air pipes. The two variable pressure fluid delivery pipes are respectively connected to the output ends of the two flow stabilizing components via flanges. The flow stabilization assembly includes an outer fixed assembly, a rotating cylinder assembly, two flow storage assemblies, four sets of stirring drive assemblies, and four sets of internal fluid drive assemblies. The outer fixed assembly includes an outer fixed sleeve, a piston connecting frame, and a flow storage cylinder drive gear. The piston connecting frame is fixedly connected to the upper side wall of the outer fixed sleeve. The flow storage cylinder drive gear is located on the outer side of the lower end face of the upper side wall of the piston connecting frame. The rotating cylinder assembly is rotatably connected to the inside of the outer fixed sleeve. The two flow storage assemblies are located inside the rotating cylinder assembly. The four sets of stirring drive assemblies are all located inside the rotating cylinder assembly and are respectively located on the front and rear sides of the two flow storage assemblies. The four sets of internal fluid drive assemblies are slidably connected to the bottom of the rotating cylinder assembly and are used in conjunction with the four sets of stirring drive assemblies.

[0009] Preferably, the melt chamber is connected between two variable pressure fluid delivery pipes via a flange and is installed on the upper end face of the control box. The lower mold assembly is installed on the upper side wall of the melt chamber. The drive mold closing mechanism is installed on the upper side wall of the control box. The mold closing plate pin is connected to the movable end of the drive mold closing mechanism. The upper mold assembly is installed in the middle position of the lower side wall of the mold closing plate. The chip driving mechanism is installed on the upper side wall of the control box and is located in front of the melt chamber.

[0010] Preferably, the piston assembly includes a piston tube and a double-plate piston rod. The double-plate piston rod is slidably connected to the center of the upper side wall of the piston tube. The tops of the double-plate piston rods of both piston assemblies are fixed to the top of the assembly template by bolts. The lower side wall of the assembly template is sleeved on the outside of the piston tube. The pressure-variable fluid delivery pipe includes an outer pipe and an elastic hose. The elastic hose is disposed inside the outer pipe.

[0011] Preferably, the external fixing assembly further includes two fluid flow pipes, a trigger switch, and a compression hole. The compression hole is opened on the piston connecting frame and located directly below the double-plate piston rod. The trigger switch is installed on the lower side wall of the piston connecting frame and located on the side close to the fluid check valve. The two fluid flow pipes are fixedly connected to the bottom of the left and right side walls of the external fixing sleeve.

[0012] Preferably, the rotating cylinder assembly includes a rotating sleeve, a sleeve gear, and two reservoir connecting bearings. The sleeve gear is located at the bottom of the outer side wall of the rotating sleeve, and the two reservoir connecting bearings are installed on the left and right sides of the upper end face of the lower side wall of the rotating sleeve.

[0013] Preferably, a rotating assembly is installed on the upper surface of the control box and in front of the two rotating cylinder assemblies. The rotating assembly includes a rotating motor and a rotating gear. The rotating gear is installed on the movable end of the rotating motor and meshes with the sleeve gear.

[0014] Preferably, the fluid storage assembly includes a fluid storage cylinder, a piston groove, a piston plate, a storage cylinder gear, several connecting springs, a multi-stage telescopic sleeve, a cylinder fixing tooth plate, a stirring rod groove, and two sealing elastic components. The multi-stage telescopic sleeve is fixedly connected to the lower side wall of the fluid storage cylinder, and the top of the outer side wall of the multi-stage telescopic sleeve is connected to the inner shaft of the storage cylinder connecting bearing. The storage cylinder gear is located at the top of the fluid storage cylinder and meshes with the storage cylinder drive gear. The piston groove is opened on the inner side wall of the fluid storage cylinder, and the piston plate is slidably connected in the piston groove. Several connecting springs are arranged in a circumferential array and fixedly connected to the outer side of the lower side wall of the fluid storage cylinder. Several connecting springs are fixedly connected to the upper side wall of the inner shaft of the storage cylinder connecting bearing. The cylinder fixing tooth plate is fixedly connected to the middle position of the front and rear side walls of the fluid storage cylinder. The stirring rod groove is opened at the top of the multi-stage telescopic sleeve, and the two sealing elastic components are fixedly connected to the two side walls of the stirring rod groove.

[0015] Preferably, the stirring drive assembly includes a first driving double tooth, a driving rack, a second driving double tooth, a reversing gear, and a transmission gear. The outer teeth of the first driving double tooth mesh with the cylinder fixed tooth plate. The top of the driving rack meshes with the inner teeth of the first driving double tooth. The inner teeth of the second driving double tooth mesh with the bottom of the driving rack. The top of the reversing gear meshes with the outer teeth of the second driving double tooth. The transmission gear meshes with the bottom of the reversing gear.

[0016] Preferably, the internal fluid drive assembly includes a stirring rod conveying toothed plate, a wear-resistant bearing, a stirring connecting rod, a stirring head, and a connecting magnetic block. The stirring rod conveying toothed plate meshes with a conveying gear. The stirring connecting rod is fixedly connected to the top of the stirring rod conveying toothed plate. The wear-resistant bearing is sleeved on the bottom of the stirring connecting rod and clamped between two sealing elastic components. The stirring head is fixedly connected to the top of the stirring connecting rod. The connecting magnetic block is fixedly connected to the bottom of one side wall of the stirring connecting rod.

[0017] Preferably, the method of using the chip packaging device specifically includes the following steps:

[0018] S1. The encapsulated fluid is extruded through the fluid extrusion mechanism. At the same time as the encapsulated fluid is extruded, the fluid check valve opens, filling the encapsulated fluid into the flow stabilizing component. The encapsulated fluid enters the outer storage component. When the fluid enters the fluid storage cylinder, the fluid will push the piston plate to slide along the top of the piston groove. When the piston plate slides to the top of the piston groove, as the volume entering the fluid storage cylinder continues to increase, the fluid will push the multi-stage telescopic sleeve to extend, increasing the storage volume of the fluid storage cylinder. When the multi-stage telescopic sleeve extends, the fluid storage cylinder rises, driving the cylinder fixed tooth plate to rise, which in turn drives the first drive double tooth to rotate. The drive rack moves downward and drives the second drive double tooth to rotate. After the reversing gear changes direction, the transmission gear rotates in the same direction as the first drive double tooth.

[0019] S2. When the transmission gear rotates, the two stirring rod transmission tooth plates move along the center of the stirring rod groove until the connecting magnetic blocks of the two internal fluid drive components are attracted and fixed. The two stirring heads are spliced ​​together. When the storage component is pushed upward to the trigger switch, the trigger switch feeds back the trigger command to the control box. The control box controls the rotating motor to work, driving the rotating gear to rotate rapidly, which in turn drives the rotating cylinder assembly to rotate rapidly and change direction. At the same time as the rotating cylinder assembly rotates, the storage component starts to rotate rapidly under the drive of the storage cylinder drive gear. Using centrifugal force, the encapsulated fluid moves outward along the direction of the rotation axis. As the rotation proceeds, the fluid particles will gradually arrange themselves into the rotation axis, forming a relatively stable structure. This effectively avoids internal turbulence and mixing caused by rapid changes in speed and pressure, improving the stability of the fluid. At the same time as the storage component rotates rapidly, the two merged internal fluid drive components rotate relative to the storage component. The stirring head can drive the inner fluid, which is subjected to less centrifugal force, to rotate, ensuring the stability of the fluid at the center.

[0020] S3. After the two fluid storage components have switched directions, the upper mold component and the lower mold component are driven to close by the mold closing mechanism. At the same time, the double-plate piston rod is driven to press down. The bottom of the double-plate piston rod squeezes the piston plate. Due to the connection spring pulling the fluid storage cylinder, the multi-stage telescopic sleeve retracts and resets, and drives the two internal fluid drive components to separate and embed into the fluid storage cylinder. Some fluid enters the melt cavity. After the multi-stage telescopic sleeve is fully reset, the double-plate piston rod continues to press down, which will drive the piston plate to move along the bottom of the piston groove, and continue to press the encapsulated fluid into the melt cavity.

[0021] S4. The piston tube has two independent chambers. While the encapsulation fluid stored in the storage component is pressed into the melt chamber, the plates on the double-plate piston rod control the gas pressure change in the upper chamber of the piston tube. When the upper chamber of the piston tube is compressed, the gas enters between the outer pipe and the flexible hose through the connecting gas pipe, causing the inner diameter of the flexible hose to narrow. As the compression process continues, the volume of the encapsulation fluid in the storage component gradually decreases, resulting in a decrease in the pressure of the encapsulation fluid. Meanwhile, the pipe of the variable pressure fluid delivery pipe continues to narrow, increasing the pressure of the encapsulation fluid and ensuring that the pressure of the encapsulation fluid remains stable, thus avoiding encapsulation quality problems caused by turbulence of the encapsulation fluid.

[0022] S5. While the encapsulation fluid is being forced into the melt chamber through the piston assembly, the fluid extrusion mechanism squeezes the encapsulation fluid into the interior of another fluid storage component. The fluid extrusion speed is controlled by the control box. Once the encapsulation fluid has entered the melt chamber, the mold closing mechanism is driven to move the mold closing plate upward, causing the bottom of the double-plate piston rod to leave the extrusion hole. However, due to the action of the spring on the mold closing plate, the upper mold assembly still presses against the lower mold assembly and maintains the mold closing force. At this time, the fluid filling of the other fluid storage component is completed and contacts the trigger switch. The two fluid storage components switch directions again and perform a new round of fluid extrusion.

[0023] (III) Beneficial Effects

[0024] This invention provides a chip packaging apparatus and method. It possesses the following key technical features and beneficial effects: This invention ensures that the fluid stabilizes before entering the melt chamber by using two flow storage components. This avoids uneven coverage of the encapsulation material on the surface of the encapsulated object caused by turbulence due to multi-directional pressure. During fluid filling, the encapsulation fluid enters the outer flow storage component. After entering the fluid storage cylinder, the fluid pushes the piston plate to slide along the top of the piston groove. As the volume of fluid entering the fluid storage cylinder continues to increase, the fluid pushes the multi-stage telescopic sleeve to extend... This design increases the storage volume of the fluid storage cylinder while simultaneously enabling the two internal fluid drive components to work together. When the fluid storage cylinder rises to the top, the two storage components begin to reverse direction, and the component containing the fluid rapidly rotates. Centrifugal force causes the encapsulated fluid to move outwards along the rotation axis. As the rotation continues, the high-viscosity encapsulated fluid is pushed against the cylinder wall by the centrifugal force generated by the cylinder's rotation. Upon contact with the cylinder wall, the fluid is driven and rotates along with the cylinder due to friction and viscosity. This rotation allows the fluid to... The fluid's motion is homogenized, and the fluid particles gradually align with the axis of rotation, forming a relatively stable structure. This effectively avoids internal turbulence and mixing caused by rapid changes in velocity and pressure, improving fluid stability. Simultaneously, as the storage component rotates, the stirring head drives the inner fluid, which experiences less centrifugal force, to rotate, ensuring the stability of the fluid at the center. This allows the fluid to stabilize before entering the melt chamber. During extrusion, the unfilled storage component simultaneously fills with fluid, maintaining synchronization with the fluid extrusion speed, ensuring high efficiency in microelectronic chip packaging. Furthermore, as the extruded fluid enters the melt chamber, the upper chamber of the piston tube is compressed, and gas enters between the outer pipe and the flexible hose through the connecting gas pipe, narrowing the inner diameter of the flexible hose. As the compression process continues, the volume of the encapsulated fluid within the storage component gradually decreases, leading to a decrease in encapsulated fluid pressure. The continuously narrowing pipe through the variable pressure fluid delivery pipe increases the pressure of the encapsulated fluid, ensuring its stability and preventing encapsulation quality issues caused by turbulence due to pressure changes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a three-dimensional schematic diagram of the piston assembly, flow stabilizing assembly, pressure variable fluid delivery pipe, connecting air pipe and rotating assembly in this invention.

[0027] Figure 3 This is a first top view of the piston assembly, flow stabilizing assembly, pressure variable fluid delivery pipe, connecting air pipe and rotating assembly in this invention.

[0028] Figure 4 for Figure 3 Isometric side sectional view along the middle AA.

[0029] Figure 5 This is a second top view of the piston assembly, flow stabilizing assembly, pressure variable fluid delivery pipe, connecting air pipe and rotating assembly in this invention.

[0030] Figure 6 for Figure 5 Sectional view at the middle edge BB.

[0031] Figure 7 This is a schematic diagram showing the cooperation between the storage component, the stirring drive component, and the internal fluid drive component in this invention.

[0032] Figure 8 This is a bottom schematic diagram of the storage component, stirring drive component, and internal fluid drive component in this invention.

[0033] Figure 9 This is a schematic diagram showing the cooperation between the stirring drive component and the internal fluid drive component in this invention.

[0034] Figure 10 This is a bottom schematic diagram of the external fixing component in this invention.

[0035] The components include: 1. Control box; 2. Drive mold closing mechanism; 3. Fluid check valve; 4. Fluid extrusion mechanism; 5. Chip driving mechanism; 6. Melt chamber; 7. Lower mold assembly; 8. Upper mold assembly; 9. Mold closing plate; 1000. Piston assembly; 1100. Flow stabilizing assembly; 1200. Variable pressure fluid delivery pipe; 13. Connecting air pipe; 1400. Rotating assembly. 1001. Piston tube; 1002. Double-plate piston rod; 11010 External fixing assembly; 11020 Rotating cylinder assembly; 11030 Flow storage assembly; 11040 Stirring drive assembly; 11050 Internal fluid drive assembly; External conduit; 1202 flexible hose; Rotate the motor; 1402, rotate the gear; 11011, External fixing sleeve; 11012, Fluid flow pipe; 11013, Piston connecting bracket; 11014, Container cylinder drive gear; 11015, Extrusion hole; 11016, Trigger switch; 11021. Rotating sleeve; 11022. Sleeve gear; 11023. Container cylinder connecting bearing; 11031. Fluid storage cylinder; 11032. Piston groove; 11033. Piston plate; 11034. Storage cylinder gear; 11035. Connecting spring; 11036. Multi-stage telescopic sleeve; 11037. Cylinder fixing toothed plate; 11038. Stirring rod slide groove; 11039. Sealing elastic component; 11041, First drive double gear; 11042, Drive rack; 11043, Second drive double gear; 11044, Reversing gear; 11045, Transmission gear; 11051, Stirring rod conveyor tooth plate; 11052, Wear-resistant bearing; 11053, Stirring connecting rod; 11054, Stirring head; 11055, Connecting magnetic block. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example:

[0038] like Figures 1-10As shown, this embodiment of the invention provides a chip packaging device, including a control chassis 1, a drive mold clamping mechanism 2, two fluid check valves 3, two fluid extrusion mechanisms 4, a chip drive mechanism 5, a melt chamber 6, a lower mold assembly 7, an upper mold assembly 8, and a mold plate 9. The two fluid extrusion mechanisms 4 are mounted on the upper side wall of the control chassis 1. The two fluid check valves 3 are respectively connected to the output ends of the two fluid extrusion mechanisms 4 via flanges. Flow stabilizing components 1100 are respectively connected to the output ends of the two fluid check valves 3 via flanges. Piston assemblies 1000 are installed at the upper side walls of the two flow stabilizing components 1100 that are close to each other. Connecting air pipes 13 are fixedly connected to the lower part of the side walls of the two piston assemblies 1000 that are close to each other. The other ends of the two connecting air pipes 13 are respectively fixedly connected to variable pressure fluid delivery pipes 1200. The feed pipes 1200 are connected to the output ends of the two flow stabilizing components 1100 via flanges. The melt cavity 6 is connected between the two variable pressure fluid delivery pipes 1200 via flanges and is installed on the upper end face of the control box 1. The lower mold assembly 7 is installed on the upper side wall of the melt cavity 6. The drive mold closing mechanism 2 is installed on the upper side wall of the control box 1. The mold closing plate 9 is pin-connected to the movable end of the drive mold closing mechanism 2. The upper mold assembly 8 is installed in the middle of the lower side wall of the mold closing plate 9. The chip driving mechanism 5 is installed on the upper side wall of the control box 1 and located in front of the melt cavity 6. The drive mold closing mechanism 2 drives the upper mold assembly 8 and the lower mold assembly 7 to close the mold, and at the same time drives the piston assembly 1000 to work, pressing the encapsulation fluid into the melt cavity 6. After the encapsulation fluid enters the melt cavity 6, it enters the mold cavity through the encapsulation flow channels of the lower mold assembly 7 and the upper mold assembly 8 and quickly solidifies and forms the shape.

[0039] The flow stabilizing assembly 1100 includes an outer fixing assembly 11010, a rotating cylinder assembly 11020, two flow storage assemblies 11030, four sets of stirring drive assemblies 11040, and four sets of internal fluid drive assemblies 11050. The outer fixing assembly 11010 includes an outer fixing sleeve 11011, a piston connecting frame 11013, and a flow storage cylinder drive gear 11014. The piston connecting frame 11013 is fixedly connected to the upper side wall of the outer fixing sleeve 11011. The flow storage cylinder drive gear 11014 is located on the outer side of the lower end face of the upper side wall of the piston connecting frame 11013. The rotating cylinder assembly 11020 is rotatably connected to the inside of the outer fixing sleeve 11011. The two flow storage assemblies 11010... The 30 is located inside the rotating cylinder assembly 11020. Four sets of stirring drive assemblies 11040 are also located inside the rotating cylinder assembly 11020 and are respectively positioned on the front and rear sides of the two storage assemblies 11030. Four sets of internal fluid drive assemblies 11050 are respectively limited and slidably connected to the bottom of the rotating cylinder assembly 11020 and cooperate with the four sets of stirring drive assemblies 11040. The encapsulated fluid is extruded through the fluid extrusion mechanism 4. Simultaneously, the fluid check valve 3 opens, filling the encapsulated fluid into the flow stabilizing assembly 1100. The fluid enters the outermost storage assembly 11030. As the volume of the filled fluid increases, the storage assembly 11030 rises. As the storage component 11030 rises, it drives the stirring drive component 11040 to operate. The internal fluid drive components 11050 work in pairs until the storage component 11030 rises to the top of the piston connecting frame 11013. The storage component 11030 then contacts the switch, and the rotating component 1400 drives the rotating cylinder component 11020 to rotate rapidly and change direction. Simultaneously, the storage component 11030, driven by the storage cylinder drive gear 11014, begins to rotate rapidly. Centrifugal force causes the encapsulation fluid to move outward along the direction of the rotation axis. As the rotation continues, the high-viscosity encapsulation fluid, under the centrifugal force generated by the cylinder's rotation, encapsulates... The fluid is pushed against the cylinder wall, and the encapsulated fluid, upon contact with the cylinder wall, is driven by friction and viscosity, and rotates along with the cylinder. This rotation homogenizes the fluid's movement, and the fluid particles gradually align with the axis of rotation, forming a relatively stable structure. This effectively avoids internal turbulence and mixing caused by rapid changes in velocity and pressure, improving the fluid's stability. Furthermore, while the storage component 11030 rotates rapidly, the two merged internal fluid drive components 11050 rotate relative to the storage component 11030, causing the encapsulated fluid in the central region, which experiences less centrifugal force, to rotate. This ensures the stability of the fluid in the center, making the fluid tend to stabilize before entering the melt chamber.

[0040] Piston assembly 1000 includes piston tube 1001 and double-plate piston rod 1002. Double-plate piston rod 1002 is slidably connected to the center of the upper side wall of piston tube 1001. The tops of the double-plate piston rods 1002 of both piston assemblies 1000 are bolted to the top of the assembly template 9. The lower side wall of the assembly template 9 is sleeved on the outside of piston tube 1001. Variable pressure fluid delivery pipe 1200 includes an outer pipe 1201 and an elastic hose 1202. The elastic hose 1202 is disposed inside the outer pipe 1201. The piston tube 1001 has two independent cavities. The upper cavity of piston tube 1001 is controlled by plates on the double-plate piston rod 1002. As the air pressure changes, the encapsulation fluid stored in the storage component 11030 can be forced into the melt chamber 6. When the upper chamber of the piston tube 1001 is compressed, the gas enters between the outer pipe 1201 and the elastic hose 1202 through the connecting air pipe 13, causing the inner diameter of the elastic hose 1202 to narrow. As the compression process continues, the volume of the encapsulation fluid in the storage component 11030 gradually decreases, resulting in a decrease in the pressure of the encapsulation fluid. Meanwhile, the pipe through the variable pressure fluid delivery pipe 1200 continues to narrow, increasing the pressure of the encapsulation fluid. This ensures that the pressure and outlet velocity of the encapsulation fluid are in a stable state, avoiding encapsulation quality problems caused by turbulence of the encapsulation fluid.

[0041] The external fixing assembly 11010 also includes two fluid flow pipes 11012, a trigger switch 11016, and a compression hole 11015. The compression hole 11015 is opened on the piston connecting bracket 11013 and located directly below the double-plate piston rod 1002. The trigger switch 11016 is installed on the lower side wall of the piston connecting bracket 11013 and located near the fluid check valve 3. The two fluid flow pipes 11012 are fixedly connected to the bottom of the left and right side walls of the external fixing sleeve 11011. The rotating cylinder assembly 11020 includes a rotating sleeve 11021, a sleeve gear 11022, and two reservoir connecting bearings 11023. The sleeve gear 11022 is located at the bottom of the outer side wall of the rotating sleeve 11021. The storage cylinder connecting bearing 11023 is installed on the left and right sides of the upper end face of the lower side wall of the rotating sleeve 11021. The upper end face of the control box 1, located in front of the two rotating cylinder assemblies 11020, is equipped with a rotating assembly 1400. The rotating assembly 1400 includes a rotating motor 1401 and a rotating gear 1402. The rotating gear 1402 is installed on the movable end of the rotating motor 1401 and meshes with the sleeve gear 11022. When the storage cylinder assembly 11030 is pressed upward to the trigger switch 11016, the trigger switch 11016 feeds back the trigger command to the control box 1. The control box 1 controls the rotating motor 1401 to work, which drives the rotating gear 1402 to rotate rapidly, thereby driving the rotating cylinder assembly 11020 to rotate rapidly.

[0042] The fluid storage assembly 11030 includes a fluid storage cylinder 11031, a piston groove 11032, a piston plate 11033, a storage cylinder gear 11034, several connecting springs 11035, a multi-stage telescopic sleeve 11036, a cylinder fixing toothed plate 11037, a stirring rod slide groove 11038, and two sealing elastic components 11039. The multi-stage telescopic sleeve 11036 is fixedly connected to the lower side wall of the fluid storage cylinder 11031, and the top of the outer side wall of the multi-stage telescopic sleeve 11036 is connected to the inner shaft of the storage cylinder connecting bearing 11023. The storage cylinder gear 11034 is located at the top of the fluid storage cylinder 11031 and meshes with the storage cylinder drive gear 11014. The piston groove 11032 is opened on the inner side wall of the fluid storage cylinder 11031. The piston plate 11033 is slidably connected in the piston groove 11032. The several connecting springs 11035 are arranged in a circumferential array. A cloth is fixedly connected to the outer side of the lower side wall of the fluid storage cylinder 11031. Several connecting springs 11035 are fixedly connected to the upper side wall of the inner shaft of the storage cylinder connecting bearing 11023. The cylinder fixing tooth plate 11037 is fixedly connected to the middle of the front and rear side walls of the fluid storage cylinder 11031. The stirring rod slide groove 11038 is opened on the top of the multi-stage telescopic sleeve 11036. Two sealing elastic components 11039 are fixedly connected to the two side walls of the stirring rod slide groove 11038. When the fluid enters the fluid storage cylinder 11031, the fluid will push the piston plate 11033 to slide along the top of the piston groove 11032. When the piston plate 11033 slides to the top of the piston groove 11032, as the volume entering the fluid storage cylinder 11031 continues to increase, the fluid will push the multi-stage telescopic sleeve 11036 to extend, thereby increasing the storage volume of the fluid storage cylinder 11031.

[0043] The stirring drive assembly 11040 includes a first driving double tooth 11041, a driving rack 11042, a second driving double tooth 11043, a reversing gear 11044, and a transmission gear 11045. The outer teeth of the first driving double tooth 11041 mesh with the cylinder fixed tooth plate 11037. The top of the driving rack 11042 meshes with the inner teeth of the first driving double tooth 11041. The inner teeth of the second driving double tooth 11043 mesh with the bottom of the driving rack 11042. The top of the reversing gear 11044 meshes with the second driving double tooth 11045. The external teeth of 11043 mesh, and the bottom of the transmission gear 11045 meshes with the reversing gear 11044. When the multi-stage telescopic sleeve 11036 extends, the fluid storage cylinder 11031 rises, driving the cylinder fixing tooth plate 11037 to rise, which in turn drives the first driving double tooth 11041 to rotate. The driving rack 11042 moves downward and drives the second driving double tooth 11043 to rotate. After the reversing gear 11044 reverses, the transmission gear 11045 rotates in the same direction as the first driving double tooth 11041.

[0044] The internal fluid drive assembly 11050 includes a stirring rod transmission toothed plate 11051, a wear-resistant bearing 11052, a stirring connecting rod 11053, a stirring head 11054, and a connecting magnetic block 11055. The stirring rod transmission toothed plate 11051 meshes with a transmission gear 11045. The stirring connecting rod 11053 is fixedly connected to the top of the stirring rod transmission toothed plate 11051. The wear-resistant bearing 11052 is sleeved on the bottom of the stirring connecting rod 11053 and clamped between two sealing elastic components 11039. The stirring head 11054 is fixedly connected to the top of the stirring connecting rod 11053. The connecting magnetic block 11055 is fixedly connected to the bottom of one side wall of the stirring connecting rod 11053. When the transmission gear 11045 rotates, the two stirring rod transmission tooth plates 11051 move along the center of the stirring rod slide groove 11038 until the connecting magnetic blocks 11055 of the two internal fluid drive components 11050 are attracted and fixed. The two stirring heads 11054 are spliced ​​together. When the storage component 11030 rotates, the stirring head 11054 can drive the inner fluid with smaller centrifugal force to rotate, ensuring the stability of the fluid at the center. The wear-resistant bearing 11052 can prevent the wear caused by the direct contact between the two sealing elastic components 11039 and the stirring connecting rod 11053 when the storage component 11030 rotates, thus improving the service life of the sealing elastic components 11039.

[0045] The method of using the chip packaging device includes the following steps:

[0046] S1. The encapsulating fluid is extruded by the fluid extrusion mechanism 4. Simultaneously, the fluid check valve 3 opens, filling the encapsulating fluid into the flow stabilizing component 1100. The encapsulating fluid then enters the outermost storage component 11030. Once the fluid enters the fluid storage cylinder 11031, it pushes the piston plate 11033 to slide along the top of the piston groove 11032. As the piston plate 11033 slides to the top of the piston groove 11032, the volume entering the fluid storage cylinder 11031 continues to increase, and the flow... The body will push the multi-stage telescopic sleeve 11036 to extend, increasing the storage volume of the fluid storage cylinder 11031. When the multi-stage telescopic sleeve 11036 extends, the fluid storage cylinder 11031 rises, driving the cylinder fixing tooth plate 11037 to rise, which in turn drives the first driving double tooth 11041 to rotate. The driving rack 11042 moves downward and drives the second driving double tooth 11043 to rotate. After the reversing gear 11044 reverses the direction, the transmission gear 11045 rotates in the same direction as the first driving double tooth 11041.

[0047] S2. When the transmission gear 11045 rotates, the two stirring rod transmission tooth plates 11051 move along the center of the stirring rod slide groove 11038 until the connecting magnetic blocks 11055 of the two internal fluid drive components 11050 are attracted and fixed, and the two stirring heads 11054 are spliced ​​together. When the storage component 11030 is pressed upward to the trigger switch 11016, the trigger switch 11016 feeds back the trigger command to the control box 1. The control box 1 controls the rotating motor 1401 to work, driving the rotating gear 1402 to rotate rapidly, which in turn drives the rotating cylinder assembly 11020 to rotate rapidly and change direction. At the same time as the rotating cylinder assembly 11020 rotates, the storage component 11030 starts to rotate rapidly under the drive of the storage cylinder drive gear 11014, using centrifugal force to make the encapsulated fluid rotate along the rotation. The axis of rotation moves outward. As the rotation continues, the high-viscosity encapsulation fluid is pushed against the cylinder wall by the centrifugal force generated by the cylinder's rotation. After contacting the cylinder wall, the encapsulation fluid is driven to rotate along with the cylinder due to friction and viscosity. This rotation makes the fluid movement uniform, and the fluid particles gradually align with the axis of rotation, forming a relatively stable structure. This effectively avoids internal turbulence and mixing caused by rapid changes in speed and pressure, improving the fluid's stability. While the storage component 11030 rotates rapidly, the two combined internal fluid drive components 11050 rotate relative to the storage component 11030. The stirring head 11054 can drive the inner fluid, which experiences less centrifugal force, to rotate, ensuring the stability of the fluid at the center.

[0048] S3. After the two fluid storage components 11030 have reversed direction, the upper mold component 8 and the lower mold component 7 are driven to close by the mold closing mechanism 2. At the same time, the double-plate piston rod 1002 is driven to press down. The bottom of the double-plate piston rod 1002 squeezes the piston plate 11033. Since the connecting spring 11035 pulls the fluid storage cylinder 11031, the multi-stage telescopic sleeve 11036 retracts and resets, and drives the two internal fluid drive components 11050 to separate and embed into the fluid storage cylinder 11031. Some fluid enters the melt cavity 6. When the multi-stage telescopic sleeve 11036 is fully reset, the double-plate piston rod 1002 continues to press down, which will drive the piston plate 11033 to move along the bottom of the piston groove 11032, and continue to press the encapsulated fluid into the melt cavity 6.

[0049] S4. The piston tube 1001 has two independent cavities. While the encapsulation fluid stored in the storage component 11030 is pressed into the melt cavity 6, the plates on the double-plate piston rod 1002 control the change of air pressure in the upper cavity of the piston tube 1001. When the upper cavity of the piston tube 1001 is compressed, the gas enters between the outer pipe 1201 and the elastic hose 1202 through the connecting air pipe 13, making the inner diameter of the elastic hose 1202 narrower. As the compression process continues, the volume of the encapsulation fluid in the storage component 11030 gradually decreases, resulting in a decrease in the pressure of the encapsulation fluid. Meanwhile, the pipe of the variable pressure fluid delivery pipe 1200 continues to narrow, increasing the pressure of the encapsulation fluid and ensuring that the pressure of the encapsulation fluid is in a stable state, thus avoiding encapsulation quality problems caused by turbulence of the encapsulation fluid.

[0050] S5. While the encapsulation fluid is being forced into the melt chamber 6 through the piston assembly 1000, the fluid extrusion mechanism 4 extrudes the encapsulation fluid into the interior of another fluid storage assembly 11030. The fluid extrusion speed is controlled by the control housing 1. After the encapsulation fluid has entered the melt chamber 6, the mold closing mechanism 2 drives the mold closing plate 9 to move upward, so that the bottom of the double-plate piston rod 1002 leaves the extrusion hole 11015. However, due to the action of the spring on the mold closing plate 9, the upper mold assembly 8 is still pressed on the lower mold assembly 7 and the mold closing force is maintained. At this time, the fluid filling of the other side of the fluid storage assembly 11030 is completed and it contacts the trigger switch 11016. The two fluid storage assemblies 11030 switch directions again and perform a new round of fluid extrusion.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chip packaging apparatus, comprising a control chassis, a drive mold clamping mechanism, two fluid check valves, two fluid extrusion mechanisms, a chip drive mechanism, a melt cavity, a lower mold assembly, an upper mold assembly, and a mold clamping plate, characterized in that, Two fluid extrusion mechanisms are mounted on the upper side wall of the control box. Two fluid check valves are respectively connected to the output ends of the two fluid extrusion mechanisms via flanges. Flow stabilizing components are respectively connected to the output ends of the two fluid check valves via flanges. Piston assemblies are mounted on the upper side walls of the two flow stabilizing components at their close ends. Connecting air pipes are fixedly connected to the lower part of the side walls of the two piston assemblies at their close ends. Variable pressure fluid delivery pipes are respectively fixedly connected to the other ends of the two connecting air pipes. Variable pressure fluid delivery pipes are respectively connected to the output ends of the two flow stabilizing components via flanges. The flow stabilization assembly includes an outer fixed assembly, a rotating cylinder assembly, two flow storage assemblies, four sets of stirring drive assemblies, and four sets of internal fluid drive assemblies. The outer fixed assembly includes an outer fixed sleeve, a piston connecting frame, and a flow storage cylinder drive gear. The piston connecting frame is fixedly connected to the upper side wall of the outer fixed sleeve. The flow storage cylinder drive gear is located on the outer side of the lower end face of the upper side wall of the piston connecting frame. The rotating cylinder assembly is rotatably connected to the inside of the outer fixed sleeve. The two flow storage assemblies are located inside the rotating cylinder assembly. The four sets of stirring drive assemblies are all located inside the rotating cylinder assembly and are respectively located on the front and rear sides of the two flow storage assemblies. The four sets of internal fluid drive assemblies are slidably connected to the bottom of the rotating cylinder assembly and are used in conjunction with the four sets of stirring drive assemblies.

2. The chip packaging apparatus according to claim 1, characterized in that, The melt chamber is connected between two variable pressure fluid delivery pipes via a flange and is installed on the upper end face of the control box. The lower mold assembly is installed on the upper side wall of the melt chamber. The drive mold closing mechanism is installed on the upper side wall of the control box. The mold closing pin is connected to the movable end of the drive mold closing mechanism. The upper mold assembly is installed in the middle of the lower side wall of the mold closing plate. The chip driving mechanism is installed on the upper side wall of the control box and is located in front of the melt chamber.

3. The chip packaging apparatus according to claim 1, characterized in that, The piston assembly includes a piston tube and a double-plate piston rod. The double-plate piston rod is slidably connected to the center of the upper side wall of the piston tube. The tops of the double-plate piston rods of both piston assemblies are fixed to the top of the assembly template by bolts. The lower side wall of the assembly template is sleeved on the outside of the piston tube. The pressure-variable fluid delivery pipe includes an outer pipe and an elastic hose. The elastic hose is disposed inside the outer pipe.

4. The chip packaging apparatus according to claim 3, characterized in that, The external fixation assembly also includes two fluid flow pipes, a trigger switch, and a compression hole. The compression hole is opened on the piston connecting frame and located directly below the double-plate piston rod. The trigger switch is installed on the lower side wall of the piston connecting frame and located on the side close to the fluid check valve. The two fluid flow pipes are fixedly connected to the bottom of the left and right side walls of the external fixation sleeve.

5. The chip packaging apparatus according to claim 1, characterized in that, The rotating cylinder assembly includes a rotating sleeve, a sleeve gear, and two reservoir connecting bearings. The sleeve gear is located at the bottom of the outer side wall of the rotating sleeve, and the two reservoir connecting bearings are installed on the left and right sides of the upper end face of the lower side wall of the rotating sleeve.

6. The chip packaging apparatus according to claim 5, characterized in that, The upper surface of the control box and the front side of the two rotating cylinder assemblies are each equipped with a rotating assembly. The rotating assembly includes a rotating motor and a rotating gear. The rotating gear is mounted on the movable end of the rotating motor and meshes with the sleeve gear.

7. The chip packaging apparatus according to claim 5, characterized in that, The fluid storage assembly includes a fluid storage cylinder, a piston groove, a piston plate, a storage cylinder gear, several connecting springs, a multi-stage telescopic sleeve, a cylinder fixing tooth plate, a stirring rod groove, and two sealing elastic components. The multi-stage telescopic sleeve is fixedly connected to the lower side wall of the fluid storage cylinder, and the top of the outer side wall of the multi-stage telescopic sleeve is connected to the inner shaft of the storage cylinder connecting bearing. The storage cylinder gear is located at the top of the fluid storage cylinder and meshes with the storage cylinder drive gear. The piston groove is opened on the inner side wall of the fluid storage cylinder, and the piston plate is slidably connected in the piston groove. Several connecting springs are arranged in a circumferential array and fixedly connected to the outer side of the lower side wall of the fluid storage cylinder. Several connecting springs are fixedly connected to the upper side wall of the inner shaft of the storage cylinder connecting bearing. The cylinder fixing tooth plate is fixedly connected to the middle of the front and rear side walls of the fluid storage cylinder. The stirring rod groove is opened at the top of the multi-stage telescopic sleeve, and the two sealing elastic components are fixedly connected to the two side walls of the stirring rod groove.

8. The chip packaging apparatus according to claim 7, characterized in that, The stirring drive assembly includes a first driving double tooth, a driving rack, a second driving double tooth, a reversing gear, and a transmission gear. The outer teeth of the first driving double tooth mesh with the fixed tooth plate of the cylinder. The top of the driving rack meshes with the inner teeth of the first driving double tooth. The inner teeth of the second driving double tooth mesh with the bottom of the driving rack. The top of the reversing gear meshes with the outer teeth of the second driving double tooth. The transmission gear meshes with the bottom of the reversing gear.

9. The chip packaging apparatus according to claim 8, characterized in that, The internal fluid drive assembly includes a stirring rod conveying toothed plate, a wear-resistant bearing, a stirring connecting rod, a stirring head, and a connecting magnetic block. The stirring rod conveying toothed plate meshes with a conveying gear. The stirring connecting rod is fixedly connected to the top of the stirring rod conveying toothed plate. The wear-resistant bearing is sleeved on the bottom of the stirring connecting rod and clamped between two sealing elastic components. The stirring head is fixedly connected to the top of the stirring connecting rod. The connecting magnetic block is fixedly connected to the bottom of one side wall of the stirring connecting rod.

10. A method of using a chip packaging apparatus according to any one of claims 1-9, characterized in that, Specifically, the following steps are included: S1. The encapsulated fluid is extruded through the fluid extrusion mechanism. At the same time as the encapsulated fluid is extruded, the fluid check valve opens, and the encapsulated fluid is filled into the flow stabilizing component. The encapsulated fluid enters the outer storage component. When the fluid enters the fluid storage cylinder, the fluid will push the piston plate to slide along the top of the piston groove. When the piston plate slides to the top of the piston groove, as the volume entering the fluid storage cylinder continues to increase, the fluid will push the multi-stage telescopic sleeve to extend, increasing the storage volume of the fluid storage cylinder. When the multi-stage telescopic sleeve extends, the fluid storage cylinder rises, driving the cylinder fixed tooth plate to rise, which in turn drives the first drive double tooth to rotate. The drive rack moves downward and drives the second drive double tooth to rotate. After the reversing gear changes direction, the transmission gear rotates in the same direction as the first drive double tooth. S2. When the transmission gear rotates, the two stirring rod transmission tooth plates move along the center of the stirring rod groove until the connecting magnetic blocks of the two internal fluid drive components are attracted and fixed. The two stirring heads are spliced ​​together. When the storage component is squeezed upward to the trigger switch, the trigger switch feeds the trigger command back to the control box. The control box controls the rotating motor to work, driving the rotating gear to rotate quickly, which in turn drives the rotating cylinder assembly to rotate quickly and change direction. At the same time as the rotating cylinder assembly rotates, the storage component starts to rotate rapidly under the drive of the storage cylinder drive gear. Using centrifugal force, the encapsulated fluid moves outward along the direction of the rotation axis. As the rotation proceeds, the fluid particles will gradually arrange themselves into the rotation axis, forming a relatively stable structure. This effectively avoids internal turbulence and mixing caused by rapid changes in speed and pressure, improving the stability of the fluid. At the same time as the storage component rotates rapidly, the two merged internal fluid drive components rotate relative to the storage component. The stirring head can drive the inner fluid, which is subjected to less centrifugal force, to rotate, ensuring the stability of the fluid at the center. S3. After the two storage components have switched directions, the upper mold component and the lower mold component are driven to close by the mold closing mechanism. At the same time, the double-plate piston rod is driven to press down. The bottom of the double-plate piston rod squeezes the piston plate. Due to the connection spring pulling the fluid storage cylinder, the multi-stage telescopic sleeve retracts and resets, and drives the two internal fluid drive components to separate and embed into the fluid storage cylinder. Some fluid enters the melt cavity. After the multi-stage telescopic sleeve is fully reset, the double-plate piston rod continues to press down, which will drive the piston plate to move along the bottom of the piston groove, and continue to press the encapsulated fluid into the melt cavity. S4. The piston tube has two independent cavities. While the encapsulation fluid stored in the storage component is pressed into the melt cavity, the plates on the double-plate piston rod control the gas pressure change in the upper cavity of the piston tube. When the upper cavity of the piston tube is compressed, the gas enters between the outer pipe and the flexible hose through the connecting gas pipe, making the inner diameter of the flexible hose narrower. As the compression process continues, the volume of the encapsulation fluid in the storage component gradually decreases, resulting in a decrease in the pressure of the encapsulation fluid. Meanwhile, the pipe of the variable pressure fluid delivery pipe continues to narrow, increasing the pressure of the encapsulation fluid, ensuring that the pressure of the encapsulation fluid is in a stable state, and avoiding encapsulation quality problems caused by turbulence of the encapsulation fluid. S5. While the encapsulation fluid is being forced into the melt chamber through the piston assembly, the fluid extrusion mechanism squeezes the encapsulation fluid into the interior of another fluid storage component. The fluid extrusion speed is controlled by the control box. Once the encapsulation fluid has entered the melt chamber, the mold closing mechanism is driven to move the mold closing plate upward, causing the bottom of the double-plate piston rod to leave the extrusion hole. However, due to the action of the spring on the mold closing plate, the upper mold assembly still presses against the lower mold assembly and maintains the mold closing force. At this time, the fluid filling of the other fluid storage component is completed and contacts the trigger switch. The two fluid storage components switch directions again and perform a new round of fluid extrusion.

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