A potting adhesive for a junction box of a solar photovoltaic module and a preparation method thereof

Abstract

The present invention discloses a potting adhesive for a solar photovoltaic module junction box and a preparation method thereof, which relates to the technical field of silicone adhesives. The potting adhesive for the solar photovoltaic module junction box is made by uniformly mixing component A and component B. Component A is made by mixing 107 glue, inorganic filler, plasticizer and deep curing accelerator. Component B is made by mixing crosslinking agent, coupling agent and catalyst in a vacuum environment. The preparation method of the potting adhesive for the solar photovoltaic module junction box is realized by the preparation equipment for the potting adhesive for the solar photovoltaic module junction box. When preparing component B in the present invention, it can not only effectively stir the raw materials of component B in a vacuum environment, but also quickly discharge component B after its preparation is completed, and reduce the residue, avoiding waste and reducing the subsequent cleaning difficulty, and is more suitable for industrial production.

Description

Technical Field

[0001] The present invention relates to the technical field of silicone adhesives, and particularly relates to a potting adhesive for a solar photovoltaic module junction box and a preparation method thereof. Background Art

[0002] A photovoltaic junction box is a connector between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect solar photovoltaic modules. The silicone potting adhesive plays a crucial role in protecting the junction box. Its high thermal conductivity ensures the rapid cooling of bypass diodes; its excellent adhesiveness ensures the sealing and waterproofing of the junction box.

[0003] The invention patent with the authorization announcement number CN 106833501 B discloses a two-component silicone potting adhesive. This silicone potting adhesive includes component A and component B with a weight ratio of 4.5 - 5.5:1. Component A, calculated by its own weight parts, contains the following raw materials: 100 parts of 107 glue, 70 - 90 parts of inorganic filler, 5 - 15 parts of plasticizer, and 0.2 - 1.2 parts of deep curing accelerator; Component B, calculated by its own weight parts, contains the following raw materials: 40 parts of crosslinking agent, 10 - 20 parts of coupling agent, and 0.3 - 0.8 parts of catalyst. The invention also relates to a method for preparing the two-component silicone potting adhesive and its uses. When using the two-component silicone potting adhesive of the present invention for potting a junction box with a complex internal structure and many microporous structures, small gaps inside the junction box can be filled, and the surface is flat and flawless.

[0004] When preparing component B in the above preparation method, technicians need to add a crosslinking agent, a coupling agent, and a catalyst into a container and stir and mix them under a vacuum state. However, those skilled in the art have found in the actual preparation process that after component B is prepared in the container, due to its certain viscosity and the obstruction of the stirring components inside the container, it is inconvenient to discharge component B in the container. Not only is the discharge speed slow, but also part of component B remains on the inner wall of the container and the stirring components, which not only causes waste of raw materials but also is not convenient for cleaning.

[0005] Therefore, it is very necessary to invent a potting adhesive for a solar photovoltaic module junction box and a preparation method thereof to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a potting adhesive for a solar photovoltaic module junction box and a preparation method thereof to solve the problems mentioned in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solutions: a method for preparing a potting glue for a solar photovoltaic module junction box, wherein the potting glue for a solar photovoltaic module junction box is prepared by uniformly mixing component A and component B, wherein component A is prepared by mixing 107 glue, inorganic filler, plasticizer and deep curing accelerator, and component B is prepared by mixing a cross-linking agent, a coupling agent and a catalyst under a vacuum environment;

[0008] The method for preparing the potting glue for the junction box of the solar photovoltaic module is realized by a device for preparing the potting glue for the junction box of the solar photovoltaic module. The device for preparing the potting glue for the junction box of the solar photovoltaic module comprises a shell, a feed hopper is fixedly nested in the middle of the left side of the shell, and a discharge pipe is fixedly penetrated at the bottom of the left side of the shell;

[0009] An air intake and exhaust drive mechanism is provided on the top of the shell and inside the shell, a closed material pushing mechanism is connected to the bottom of the air intake and exhaust drive mechanism, a storage type stirring mechanism is provided on the closed material pushing mechanism, a first trigger mechanism is provided inside the air intake and exhaust drive mechanism, a second trigger mechanism and two sets of shielding mechanisms are provided inside the closed material pushing mechanism;

[0010] The intake and exhaust drive mechanism comprises a hollow screw, a drive motor, a drive gear, a threaded sleeve, a first spring and an intake and exhaust pipe;

[0011] The hollow screw passes through the top of the shell and is rotatably connected to the shell through a bearing. The drive motor is fixedly arranged on the right side of the top of the shell. Two drive gears are provided. The two drive gears are meshed with each other. One drive gear is fixedly sleeved on the outside of the hollow screw, and the other drive gear is transmission-connected to the drive motor. The threaded sleeve is sleeved on the outside of the hollow screw and is threadedly connected to the hollow screw. The first spring is rotatably connected to the bottom end of the hollow screw through a bearing, and the air inlet and outlet pipes are rotatably connected to the top end of the hollow screw through a rotary joint.

[0012] The closed material pushing mechanism comprises an inner closing plate, an outer closing plate, a limit slider, a limit slide groove, a sealing seat, a support tube, an opening, a cross bar and a blocking plate;

[0013] The inner closing plate is fixedly sleeved on the outer bottom of the threaded sleeve. The outer closing plate is rotatably sleeved on the outer side of the inner closing plate through a bearing and is in sliding fit with the inner wall of the housing. The limit slider is fixedly arranged on the outer side of the outer closing plate. The limit chute is arranged on the inner wall of the housing. The limit slider is slidably arranged inside the limit chute. An air hole is opened at the center of the bottom of the inner closing plate. The sealing seat is located inside the inner closing plate and blocks the air hole. The sealing seat is fixedly connected to the bottom end of the first spring. There are two support pipes, openings, cross bars and blocking plates respectively. The two support pipes are respectively fixedly arranged on both sides of the top of the sealing seat. The two openings are respectively opened at the rear sides of the two support pipes. The two cross bars are respectively fixedly arranged on both sides of the sealing seat. The two blocking plates are respectively fixedly arranged at the ends of the two cross bars;

[0014] The retractable stirring mechanism includes an annular bottom plate, a stirring plate, a receiving groove, a stirring rod and a limiting sleeve;

[0015] The annular bottom plate is rotatably nested inside the bottom of the housing through a bearing. There are two stirring plates and two limiting sleeves respectively. There are multiple receiving grooves and stirring rods respectively. The two stirring plates are respectively fixedly arranged on both sides of the top of the annular bottom plate and both slide through the inner closing plate. The two limiting sleeves are respectively slidably sleeved on the outer sides of the two stirring plates and are both fixedly arranged on the top of the inner closing plate. Multiple receiving grooves are evenly opened on both sides of the two stirring plates. Multiple stirring rods are respectively rotatably arranged inside the multiple receiving grooves through pin shafts. A torsion spring is arranged between the stirring rod and the inner wall of the receiving groove.

[0016] Preferably, the first triggering mechanism includes two groups of first triggering components and multiple first card holes. The first triggering component includes a longitudinal chute, a second spring, a longitudinal slider, a sliding clamping block, an inclined groove, a guiding column and a first channel.

[0017] Preferably, the longitudinal chute is opened at the inner top end of the threaded sleeve. One end of the second spring is fixedly connected to the inner wall of the longitudinal chute and the other end is fixedly connected to the longitudinal slider. The longitudinal slider is slidably arranged inside the longitudinal chute in the vertical direction. The sliding clamping block is slidably nested inside the longitudinal slider in the horizontal direction. The inclined groove is opened on the sliding clamping block. The guiding column is slidably arranged inside the inclined groove. Both ends of the guiding column are fixedly connected to the longitudinal slider. The first channel is opened inside the threaded sleeve, and one end of it is communicated with the longitudinal chute and the other end is communicated with the inner cavity of the inner closing plate. Multiple first card holes are evenly opened on the outer wall of the hollow screw.

[0018] Preferably, the second triggering mechanism includes two groups of second triggering components and multiple second card holes. The second triggering component includes a transverse chute, a second channel, a transverse slider and a third spring.

[0019] Preferably, the transverse slide groove is opened inside the inner closed plate, one end of the second channel is connected with the transverse slide groove and the other end is connected with the inner cavity of the inner closed plate, the transverse slider is arranged on the inner side of the transverse slide groove for sliding along the horizontal direction, one end of the third spring is fixedly connected with the transverse slider and the other end is fixedly connected with the inner wall of the transverse slide groove, and a plurality of the second card holes are evenly opened on the inner wall of the outer closed plate.

[0020] Preferably, the shielding mechanism includes a fixed plate, a sliding rod, a fourth spring and a shielding block.

[0021] Preferably, the fixed plate is fixedly arranged inside the inner closing plate, the sliding rod slides through the fixed plate, the fourth spring is sleeved on the outside of the sliding rod, the blocking block is fixedly arranged at the end of the fourth spring, and the blocking block blocks the first channel.

[0022] Preferably, the method specifically comprises the following steps:

[0023] S1. Stir 107 glue, inorganic filler and plasticizer until they are evenly mixed, then add deep curing accelerator after cooling to room temperature, and mix to obtain component A;

[0024] S2, adding the crosslinking agent, coupling agent and catalyst into the shell through the feed hopper, at this time, the end of the horizontal slider is located inside the second clamping hole, and then starting the driving motor. After the driving motor is started, the hollow screw is driven to rotate through the driving gear, and when the hollow screw rotates, it drives the threaded sleeve to descend, and when the threaded sleeve descends, it drives the inner closing plate to descend synchronously, and the inner closing plate drives the outer closing plate to descend synchronously. As the inner closing plate continues to descend, the first spring in a compressed state is gradually reset;

[0025] S3, when the descending distance of the inner closing plate reaches the first threshold, the level of the inner closing plate and the outer closing plate is lower than the level of the feed hopper, at this time, the inner closing plate, the outer closing plate and the inner wall of the shell cooperate to form a closed space, and then the air inside the hollow screw is sucked through the air intake and exhaust pipes, and the inside of the hollow screw is in a negative pressure state;

[0026] S4, when the inner sealing plate descends to a second threshold, the first spring drives the sealing seat to rise, thereby releasing the blockage of the pore at the bottom center of the inner sealing plate, and then the negative pressure inside the hollow screw is transmitted to the closed space, thereby extracting the air in the closed space to form a vacuum environment;

[0027] S5. When the sealing seat ascends, the sealing seat drives the plugging plate to ascend synchronously through the cross bar, thereby releasing the plugging of the second channel. At this time, the negative pressure inside the inner sealing plate is transmitted to the inside of the transverse chute through the second channel to pull the transverse slider. The end of the transverse slider is withdrawn from the inside of the second clamping hole. Additionally, when the sealing seat ascends, it will push the shielding block through the support pipe, thereby moving the shielding block away. At this time, the negative pressure inside the inner sealing plate is transmitted to the inside of the first channel through the opening, and then the longitudinal slider is pulled downward. Thereby, the longitudinal slider pushes the sliding block through the inclined groove and the guiding column, and then the end of the sliding block enters the inside of the first clamping hole. At this time, the threaded sleeve and the hollow screw are locked with each other;

[0028] S6. As the hollow screw continues to rotate, at this time, the hollow screw drives the inner sealing plate to continuously rotate through the threaded sleeve. The inner sealing plate drives the two stirring plates and multiple stirring rods to continuously stir the materials located in the vacuum chamber. After the stirring is completed, the B component is prepared;

[0029] S7. Stop sucking the inside of the hollow screw by the air inlet and outlet pipe, and at the same time, make the air inlet and outlet pipe input air into the hollow screw. At this time, driven by the second spring and the third spring, the sliding block and the transverse slider are reset successively. Subsequently, under the push of the air flow, the sealing seat closes the air hole at the center of the bottom of the inner sealing plate again;

[0030] S8. Open the valve on the discharge pipe. At this time, as the driving motor continues to drive, the driving motor drives the inner sealing plate to descend continuously through the hollow screw and the threaded sleeve. At this time, the inner sealing plate and the outer sealing plate continuously descend along the inner wall of the shell, thereby pushing the B component inside the shell. When the descending distance of the inner sealing plate reaches the third threshold, the bottoms of the inner sealing plate and the outer sealing plate contact the bottom of the inner cavity of the shell. At this time, all the B components inside the shell are discharged;

[0031] S9. Uniformly mix the discharged B component with the A component to prepare the potting adhesive for the solar photovoltaic module junction box.

[0032] The technical effects and advantages of the present invention:

[0033] The present invention is provided with an intake and exhaust driving mechanism, a closed feeding mechanism, a retractable stirring mechanism, a first triggering mechanism, a second triggering mechanism and a shielding mechanism, so as to drive the closed feeding mechanism to descend by means of the intake and exhaust driving mechanism, and then enable the closed feeding mechanism to cooperate with the inner wall of the housing to form a closed environment. Subsequently, the intake and exhaust driving mechanism discharges the air in the closed environment, thereby forming a vacuum environment. In addition, when the vacuum environment is formed, the intake and exhaust driving mechanism drives the second triggering mechanism, the shielding mechanism and the first triggering mechanism in sequence, so that the intake and exhaust driving mechanism drives the retractable stirring mechanism to complete the stirring of the material through the closed feeding mechanism. Finally, the intake and exhaust driving mechanism is used to drive the closed feeding mechanism again, so that the closed feeding mechanism discharges all the materials inside the housing. Compared with the same type of devices or methods in the prior art, when preparing the B component, the present invention can not only effectively stir the B component raw material in a vacuum environment, but also quickly discharge the B component after its preparation, reduce the residue, avoid waste and reduce the subsequent cleaning difficulty, and is more suitable for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic front sectional structure view of the whole of the present invention.

[0035] Figure 2 It is a schematic front sectional structure view of the intake and exhaust driving mechanism and the first triggering mechanism of the present invention.

[0036] Figure 3 It is a schematic front sectional structure view of the closed feeding mechanism and the second triggering mechanism of the present invention.

[0037] Figure 4 For the present invention Figure 3 Schematic enlarged structure view of part A.

[0038] Figure 5 It is a schematic front sectional structure view of the retractable stirring mechanism of the present invention.

[0039] In the figure: 1. Housing; 2. Feed hopper; 3. Discharge pipe; 4. Air inlet and exhaust driving mechanism; 41. Hollow screw; 42. Driving motor; 43. Driving gear; 44. Threaded sleeve; 45. First spring; 46. Air inlet and exhaust pipeline; 5. Sealing and pushing mechanism; 51. Inner sealing plate; 52. Outer sealing plate; 53. Limit slider; 54. Limit chute; 55. Sealing seat; 56. Support pipe; 57. Opening; 58. Cross bar; 59. Plugging plate; 6. Retractable stirring mechanism; 61. Annular bottom plate; 62. Stirring plate; 63. Accommodating groove; 64. Stirring rod; 65. Limit sleeve; 7. First triggering mechanism; 71. Longitudinal chute; 72. Second spring; 73. Longitudinal slider; 74. Sliding block; 75. Inclined groove; 76. Guide post; 77. First channel; 78. First clamping hole; 8. Second triggering mechanism; 81. Transverse chute; 82. Second channel; 83. Transverse slider; 84. Third spring; 85. Second clamping hole; 9. Shielding mechanism; 91. Fixed plate; 92. Sliding rod; 93. Fourth spring; 94. Shielding block. Detailed implementation mode

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0041] Embodiment 1

[0042] The present invention provides a preparation method of a potting adhesive for a solar photovoltaic module junction box as Figures 1-5 shown. The potting adhesive for the solar photovoltaic module junction box is made by uniformly mixing component A and component B. Component A is made by mixing 107 glue, inorganic filler, plasticizer and deep curing accelerator. Component B is made by mixing crosslinking agent, coupling agent and catalyst in a vacuum environment.

[0043] The preparation method of the potting adhesive for the solar photovoltaic module junction box is realized by a preparation device for the potting adhesive for the solar photovoltaic module junction box. The preparation device for the potting adhesive for the solar photovoltaic module junction box includes a housing 1. A feed hopper 2 is fixedly nested in the middle of the left side of the housing 1. A discharge pipe 3 is fixedly penetrated through the bottom of the left side of the housing 1. An air inlet and exhaust driving mechanism 4 is arranged on the top of the housing 1 and inside the housing 1. The bottom end of the air inlet and exhaust driving mechanism 4 is drivingly connected to a sealing and pushing mechanism 5. A retractable stirring mechanism 6 is arranged on the sealing and pushing mechanism 5. A first triggering mechanism 7 is arranged inside the air inlet and exhaust driving mechanism 4. A second triggering mechanism 8 and two groups of shielding mechanisms 9 are arranged inside the sealing and pushing mechanism 5.

[0044] As Figure 2 shown in combination with Figure 3 Figure 1, the intake and exhaust drive mechanism 4 includes a hollow screw 41, a drive motor 42, drive gears 43, a threaded sleeve 44, a first spring 45, and an intake and exhaust duct 46. Among them, the hollow screw 41 passes through the top of the housing 1 and is rotatably connected to the housing 1 through a bearing. The drive motor 42 is fixedly arranged on the right side of the top of the housing 1. There are two drive gears 43, and the two drive gears 43 mesh with each other. One drive gear 43 is fixedly sleeved on the outside of the hollow screw 41, and the other drive gear 43 is in transmission connection with the drive motor 42. The threaded sleeve 44 is sleeved on the outside of the hollow screw 41 and is threadedly connected to the hollow screw 41. The first spring 45 is rotatably connected to the bottom end of the hollow screw 41 through a bearing. The intake and exhaust duct 46 is rotatably connected to the top end of the hollow screw 41 through a rotary joint.

[0045] As Figure 3 shown in combination with Figure 4 Figure 2, the closing and pushing mechanism 5 includes an inner closing plate 51, an outer closing plate 52, a limit slider 53, a limit chute 54, a sealing seat 55, a support tube 56, an opening 57, a cross bar 58, and a blocking plate 59. Among them, the inner closing plate 51 is fixedly sleeved on the outside of the bottom of the threaded sleeve 44. The outer closing plate 52 is rotatably sleeved on the outside of the inner closing plate 51 through a bearing and is in sliding fit with the inner wall of the housing 1. The limit slider 53 is fixedly arranged on the outside of the outer closing plate 52. The limit chute 54 is opened on the inner wall of the housing 1. The limit slider 53 is slidably arranged inside the limit chute 54. An air hole is opened at the center of the bottom of the inner closing plate 51. The sealing seat 55 is located inside the inner closing plate 51 and blocks the air hole. The sealing seat 55 is fixedly connected to the bottom end of the first spring 45. There are two support tubes 56, openings 57, cross bars 58, and blocking plates 59. The two support tubes 56 are respectively fixedly arranged on both sides of the top of the sealing seat 55. The two openings 57 are respectively opened on the rear sides of the two support tubes 56. The two cross bars 58 are respectively fixedly arranged on both sides of the sealing seat 55. The two blocking plates 59 are respectively fixedly arranged at the ends of the two cross bars 58.

[0046] By setting the inlet and outlet drive mechanism 4 and the closed push mechanism 5, it is convenient for the driving motor 42 to drive the hollow screw 41 to rotate through the driving gear 43 after starting, and the hollow screw 41 drives the threaded sleeve 44 to descend when rotating, and the threaded sleeve 44 drives the inner closing plate 51 to descend synchronously when descending, and the inner closing plate 51 drives the outer closing plate 52 to descend synchronously. As the inner closing plate 51 continues to descend, the first spring 45 in a compressed state gradually resets. When the inner closing plate 51 descends a distance that reaches a first threshold, the level of the inner closing plate 51 and the outer closing plate 52 is lower than the inlet and outlet. The hopper 2 is at a horizontal height. At this time, the inner sealing plate 51, the outer sealing plate 52 and the inner wall of the shell 1 cooperate to form a closed space. Then, the air inside the hollow screw 41 is sucked through the air inlet and exhaust pipes 46. The interior of the hollow screw 41 is in a negative pressure state. When the inner sealing plate 51 descends a distance that reaches a second threshold, the first spring 45 drives the sealing seat 55 to rise, thereby releasing the blockage of the air hole at the bottom center of the inner sealing plate 51. Then, the negative pressure inside the hollow screw 41 is transmitted to the closed space, and then the air in the closed space is extracted to form a vacuum environment.

[0047] like Figure 3 and Figure 5 As shown, the storage type stirring mechanism 6 includes an annular bottom plate 61, a stirring plate 62, a receiving groove 63, a stirring rod 64 and a limiting sleeve 65, wherein the annular bottom plate 61 is rotatably nested in the embedded bottom of the shell 1 through a bearing, two stirring plates 62 and two limiting sleeves 65 are each provided, and multiple receiving grooves 63 and stirring rods 64 are each provided. The two stirring plates 62 are respectively fixedly arranged on both sides of the top of the annular bottom plate 61, and both slide through the inner closed plate 51, the two limiting sleeves 65 are respectively slidably sleeved on the outside of the two stirring plates 62, and both are fixedly arranged on the top of the inner closed plate 51, multiple receiving grooves 63 are evenly opened on both sides of the two stirring plates 62, and multiple stirring rods 64 are respectively rotatably arranged on the inner sides of multiple receiving grooves 63 through pin shafts, and a torsion spring is arranged between the stirring rod 64 and the inner wall of the receiving groove 63.

[0048] By setting the above structure, the inner sealing plate 51 can drive the two stirring plates 62 and the multiple stirring rods 64 to continuously stir the material in the vacuum chamber, and component B is obtained after the stirring is completed. In addition, when the inner sealing plate 51 continues to descend, the inner sealing plate 51 can push the stirring rod 64, so that the stirring rod 64 enters the inner side of the receiving groove 63 and is accommodated, and the residual material in the inner side of the receiving groove 63 is squeezed out due to the entry of the stirring rod 64.

[0049] like Figure 2As shown, the first trigger mechanism 7 includes two groups of first trigger components and a plurality of first clamping holes 78, wherein the first trigger component includes a longitudinal slide groove 71, a second spring 72, a longitudinal slider 73, a sliding clamping block 74, an inclined groove 75, a guide column 76 and a first channel 77, wherein the longitudinal slide groove 71 is provided at the top end inside the threaded sleeve 44, one end of the second spring 72 is fixedly connected to the inner wall of the longitudinal slide groove 71 and the other end is fixedly connected to the longitudinal slider 73, the longitudinal slider 73 is slidably arranged inside the longitudinal slide groove 71 along the vertical direction, the sliding clamping block 74 is slidably nested inside the longitudinal slider 73 along the horizontal direction, the inclined groove 75 is provided on the sliding clamping block 74, the guide column 76 is slidably arranged inside the inclined groove 75, both ends of the guide column 76 are fixedly connected to the longitudinal slider 73, the first channel 77 is provided inside the threaded sleeve 44, and one end thereof is communicated with the longitudinal slide groove 71 and the other end is communicated with the inner cavity of the inner sealing plate 51, and a plurality of the first clamping holes 78 are evenly provided on the outer wall of the hollow screw 41.

[0050] By setting up the closed pushing mechanism 5 and the first trigger mechanism 7, when the sealing seat 55 rises, the blocking block 94 will be pushed through the support tube 56, so that the blocking block 94 is moved away. At this time, the negative pressure inside the inner closing plate 51 is transmitted to the inside of the first channel 77 through the opening 57, and then the longitudinal slider 73 is pulled downward, so that the longitudinal slider 73 pushes the sliding block 74 through the inclined groove 75 and the guide column 76, so that the end of the sliding block 74 enters the inside of the first clamping hole 78, and the threaded sleeve 44 and the hollow screw 41 are locked with each other.

[0051] like Figure 3 As shown, the second trigger mechanism 8 includes two groups of second trigger components and a plurality of second clamping holes 85, wherein the second trigger component includes a transverse slide groove 81, a second channel 82, a transverse slider 83 and a third spring 84, wherein the transverse slide groove 81 is opened inside the inner closed plate 51, one end of the second channel 82 is connected with the transverse slide groove 81 and the other end is connected with the inner cavity of the inner closed plate 51, the transverse slider 83 is slidably arranged on the inner side of the transverse slide groove 81 along the horizontal direction, one end of the third spring 84 is fixedly connected with the transverse slider 83 and the other end is fixedly connected with the inner wall of the transverse slide groove 81, and a plurality of second clamping holes 85 are evenly opened on the inner wall of the outer closed plate 52.

[0052] By setting up the closed pushing mechanism 5 and the second trigger mechanism 8, when the sealing seat 55 rises, the sealing seat 55 drives the sealing plate 59 to rise synchronously through the cross bar 58, thereby releasing the blockage of the second channel 82. At this time, the negative pressure inside the inner closing plate 51 is transmitted to the inside of the transverse slide groove 81 through the second channel 82 to pull the transverse slider 83, and the end of the transverse slider 83 is pulled out from the inside of the second clamping hole 85.

[0053] like Figure 4 As shown, the shielding mechanism 9 includes a fixed plate 91, a sliding rod 92, a fourth spring 93 and a shielding block 94, wherein the fixed plate 91 is fixedly arranged inside the inner closing plate 51, the sliding rod 92 slides through the fixed plate 91, the fourth spring 93 is sleeved on the outside of the sliding rod 92, and the shielding block 94 is fixedly arranged at the end of the fourth spring 93, and the shielding block 94 blocks the first channel 77.

[0054] By setting the above structure, the first channel 77 can be blocked by the blocking block 94 to prevent negative pressure from entering the first channel 77 too early and affecting the longitudinal slider 73. At the same time, when the blocking block 94 is no longer pushed, the fourth spring 93 can drive the blocking block 94 and the sliding rod 92 to reset.

[0055] Example 2

[0056] The method specifically comprises the following steps:

[0057] S1. Stir 107 glue, inorganic filler and plasticizer until they are evenly mixed, then add deep curing accelerator after cooling to room temperature, and mix to obtain component A;

[0058] S2, adding the crosslinking agent, coupling agent and catalyst into the housing 1 through the feed hopper 2, at which time the end of the transverse slider 83 is located inside the second clamping hole 85, and then starting the drive motor 42. After the drive motor 42 is started, the hollow screw 41 is driven to rotate through the drive gear 43, and the hollow screw 41 drives the threaded sleeve 44 to descend when rotating, and the threaded sleeve 44 drives the inner closing plate 51 to descend synchronously when descending, and the inner closing plate 51 drives the outer closing plate 52 to descend synchronously, and as the inner closing plate 51 continues to descend, the first spring 45 in a compressed state is gradually reset;

[0059] S3, when the descending distance of the inner sealing plate 51 reaches the first threshold, the level of the inner sealing plate 51 and the outer sealing plate 52 is lower than the level of the feed hopper 2, and the inner sealing plate 51, the outer sealing plate 52 and the inner wall of the shell 1 cooperate to form a closed space, and then the air inside the hollow screw 41 is sucked through the air intake and exhaust pipe 46, and the inside of the hollow screw 41 is in a negative pressure state;

[0060] S4, when the inner sealing plate 51 descends to a second threshold, the first spring 45 drives the sealing seat 55 to rise, thereby releasing the blockage of the pore at the bottom center of the inner sealing plate 51, and then the negative pressure inside the hollow screw 41 is transmitted to the closed space, thereby extracting the air in the closed space to form a vacuum environment;

[0061] S5. When the sealing seat 55 ascends, the sealing seat 55 drives the plugging plate 59 to ascend synchronously through the cross bar 58, thereby releasing the plugging of the second channel 82. At this time, the negative pressure inside the inner sealing plate 51 is transmitted to the inside of the transverse sliding groove 81 through the second channel 82 to pull the transverse sliding block 83. The end of the transverse sliding block 83 is withdrawn from the inside of the second clamping hole 85. Additionally, when the sealing seat 55 ascends, it will push the shielding block 94 through the support pipe 56, thereby moving the shielding block 94 away. At this time, the negative pressure inside the inner sealing plate 51 is transmitted to the inside of the first channel 77 through the opening 57, and then the longitudinal sliding block 73 is pulled downward. Furthermore, the longitudinal sliding block 73 pushes the sliding clamping block 74 through the inclined groove 75 and the guide post 76, so that the end of the sliding clamping block 74 enters the inside of the first clamping hole 78. At this time, the threaded sleeve 44 and the hollow screw 41 are locked with each other;

[0062] S6. As the hollow screw 41 continues to rotate, at this time, the hollow screw 41 drives the inner sealing plate 51 to continuously rotate through the threaded sleeve 44. The inner sealing plate 51 drives the two stirring plates 62 and the multiple stirring rods 64 to continuously stir the materials located in the vacuum chamber. After the stirring is completed, the B component is prepared;

[0063] S7. Stop the intake and exhaust pipe 46 from sucking the inside of the hollow of the hollow screw 41, and at the same time, make the intake and exhaust pipe 46 input air into the inside of the hollow screw 41. At this time, driven by the second spring 72 and the third spring 84, the sliding clamping block 74 and the transverse sliding block 83 are reset successively. Subsequently, under the push of the air flow, the sealing seat 55 seals the air hole at the center of the bottom of the inner sealing plate 51 again;

[0064] S8. Open the valve on the discharge pipe 3. At this time, as the driving motor 42 continues to drive, the driving motor 42 drives the inner sealing plate 51 to descend continuously through the hollow screw 41 and the threaded sleeve 44. At this time, the inner sealing plate 51 and the outer sealing plate 52 descend continuously along the inner wall of the housing 1, thereby pushing the B component inside the housing 1. When the descending distance of the inner sealing plate 51 reaches the third threshold value, the bottoms of the inner sealing plate 51 and the outer sealing plate 52 contact the bottom of the inner cavity of the housing 1. At this time, all the B components inside the housing 1 are discharged;

[0065] S9. Uniformly mix the discharged B component with the A component to prepare the potting adhesive for the solar photovoltaic module junction box.

[0066] Example 3

[0067] It should also be noted that after completing S6, the technician can reset the air intake and exhaust driving mechanism 4 to drive the closing and feeding mechanism 5, and then add component A into the interior of the housing 1 through the feed hopper 2, and then repeat the operations of S2-S6, so as to directly prepare the potting adhesive for the solar photovoltaic module junction box inside the housing 1, and then continue the operations of S7-S9 to discharge all the prepared potting adhesive for the solar photovoltaic module junction box.

[0068] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation method of potting adhesive for a solar photovoltaic module junction box. The potting adhesive for the solar photovoltaic module junction box is made by uniformly mixing component A and component B. Component A is made by mixing 107 glue, inorganic filler, plasticizer and deep curing accelerator. Component B is made by mixing crosslinking agent, coupling agent and catalyst in a vacuum environment; It is characterized in that: The preparation method of the potting adhesive for the solar photovoltaic module junction box is realized by the preparation equipment for the potting adhesive for the solar photovoltaic module junction box. The preparation equipment for the potting adhesive for the solar photovoltaic module junction box includes a housing. A feed hopper is fixedly nested in the middle of the left side of the housing, and a discharge pipe is fixedly penetrated through the bottom of the left side of the housing; An air inlet and outlet driving mechanism is jointly arranged on the top of the housing and inside the housing. The bottom end of the air inlet and outlet driving mechanism is drivingly connected with a closed pushing mechanism. A retractable stirring mechanism is arranged on the closed pushing mechanism. A first triggering mechanism is arranged inside the air inlet and outlet driving mechanism, and a second triggering mechanism and two shielding mechanisms are arranged inside the closed pushing mechanism; The air inlet and outlet driving mechanism includes a hollow screw, a driving motor, a driving gear, a threaded sleeve, a first spring and an air inlet and outlet pipe; The hollow screw penetrates through the top of the housing and is rotationally connected with the housing through a bearing. The driving motor is fixedly arranged on the right side of the top of the housing. There are two driving gears, and the two driving gears mesh with each other. One driving gear is fixedly sleeved on the outside of the hollow screw, and the other driving gear is drivingly connected with the driving motor. The threaded sleeve is sleeved on the outside of the hollow screw and is threadedly connected with the hollow screw. The first spring is rotationally connected to the bottom end of the hollow screw through a bearing, and the air inlet and outlet pipe is rotationally connected to the top end of the hollow screw through a rotary joint; The closed pushing mechanism includes an inner closing plate, an outer closing plate, a limit slider, a limit chute, a sealing seat, a support pipe, an opening, a cross bar and a plugging plate; The inner closing plate is fixedly sleeved on the outside of the bottom of the threaded sleeve. The outer closing plate is rotationally sleeved on the outside of the inner closing plate through a bearing and is slidably attached to the inner wall of the housing. The limit slider is fixedly arranged on the outside of the outer closing plate. The limit chute is opened on the inner wall of the housing, and the limit slider is slidably arranged inside the limit chute. An air hole is opened at the center of the bottom of the inner closing plate. The sealing seat is located inside the inner closing plate and plugs the air hole. The sealing seat is fixedly connected with the bottom end of the first spring. There are two support pipes, openings, cross bars and plugging plates. The two support pipes are respectively fixedly arranged on both sides of the top of the sealing seat. The two openings are respectively opened at the rear sides of the two support pipes. The two cross bars are respectively fixedly arranged on both sides of the sealing seat. The two plugging plates are respectively fixedly arranged at the ends of the two cross bars; The retractable stirring mechanism includes an annular bottom plate, a stirring plate, a receiving groove, a stirring rod and a limit sleeve; The annular bottom plate is rotationally nested inside the bottom of the housing through a bearing. There are two stirring plates and two limiting sleeves. There are multiple accommodating grooves and stirring rods. The two stirring plates are respectively fixedly arranged on both sides of the top of the annular bottom plate and both slide through the inner closing plate. The two limiting sleeves are respectively slidably sleeved on the outer sides of the two stirring plates and are both fixedly arranged on the top of the inner closing plate. The multiple accommodating grooves are evenly opened on both sides of the two stirring plates. The multiple stirring rods are respectively rotationally arranged inside the multiple accommodating grooves through pin shafts. A torsion spring is arranged between the stirring rod and the inner wall of the accommodating groove; The first triggering mechanism includes two groups of first triggering components and multiple first card holes. The first triggering component includes a longitudinal chute, a second spring, a longitudinal slider, a sliding block, an inclined chute, a guiding column and a first channel; The longitudinal chute is opened at the inner top of the threaded sleeve. One end of the second spring is fixedly connected to the inner wall of the longitudinal chute and the other end is fixedly connected to the longitudinal slider. The longitudinal slider is slidably arranged inside the longitudinal chute in the vertical direction. The sliding block is slidably nested inside the longitudinal slider in the horizontal direction. The inclined chute is opened on the sliding block. The guiding column is slidably arranged inside the inclined chute. Both ends of the guiding column are fixedly connected to the longitudinal slider. The first channel is opened inside the threaded sleeve, and one end of it is communicated with the longitudinal chute and the other end is communicated with the inner cavity of the inner closing plate. The multiple first card holes are evenly opened on the outer wall of the hollow screw; The second triggering mechanism includes two groups of second triggering components and multiple second card holes. The second triggering component includes a transverse chute, a second channel, a transverse slider and a third spring; The transverse chute is opened inside the inner closing plate. One end of the second channel is communicated with the transverse chute and the other end is communicated with the inner cavity of the inner closing plate. The transverse slider is slidably arranged inside the transverse chute in the horizontal direction. One end of the third spring is fixedly connected to the transverse slider and the other end is fixedly connected to the inner wall of the transverse chute. The multiple second card holes are evenly opened on the inner wall of the outer closing plate; The shielding mechanism includes a fixing plate, a sliding rod, a fourth spring and a shielding block; The fixing plate is fixedly arranged inside the inner closing plate. The sliding rod slides through the fixing plate. The fourth spring is sleeved outside the sliding rod. The shielding block is fixedly arranged at the end of the fourth spring. The shielding block blocks the first channel.

2. The preparation method of a potting adhesive for a junction box of a solar photovoltaic module according to claim 1, characterized in that The method specifically includes the following steps: S1. Stir 107 glue, inorganic filler and plasticizer until evenly mixed, then cool to room temperature and add a deep curing accelerator, and mix to obtain component A; S2. Add a crosslinking agent, a coupling agent and a catalyst into the housing through the feed hopper. At this time, the end of the transverse slider is inside the second card hole. Then start the driving motor. After the driving motor starts, drive the hollow screw to rotate through the driving gear. When the hollow screw rotates, it drives the threaded sleeve to descend. When the threaded sleeve descends, it drives the inner closing plate to descend synchronously. The inner closing plate drives the outer closing plate to descend synchronously. As the inner closing plate continuously descends, the first spring in the compressed state gradually resets; S3. When the descending distance of the inner closing plate reaches the first threshold value, the horizontal height of the inner closing plate and the outer closing plate is lower than the horizontal height of the feed hopper. At this time, the inner closing plate, the outer closing plate and the inner wall of the shell cooperate to form a closed space. Subsequently, the air inside the hollow screw is sucked through the air inlet and outlet pipe, and the inside of the hollow screw is in a negative pressure state. S4. When the descending distance of the inner closing plate reaches the second threshold value, at this time, the first spring drives the sealing seat to rise, thereby releasing the blockage of the air hole at the center of the bottom of the inner closing plate. Subsequently, the negative pressure inside the hollow screw is transmitted to the closed space, and then the air in the closed space is pumped out to form a vacuum environment. S5. When the sealing seat rises, the sealing seat drives the blocking plate to rise synchronously through the cross bar, thereby releasing the blockage of the second channel. At this time, the negative pressure inside the inner closing plate is transmitted to the inside of the transverse chute through the second channel to pull the transverse slider. The end of the transverse slider is withdrawn from the inside of the second clamping hole. In addition, when the sealing seat rises, it will push the shielding block through the support pipe, thereby moving the shielding block away. At this time, the negative pressure inside the inner closing plate is transmitted to the inside of the first channel through the opening, and then the longitudinal slider is pulled down. Then, the longitudinal slider pushes the sliding block through the inclined groove and the guiding column, so that the end of the sliding block enters the inside of the first clamping hole. At this time, the threaded sleeve and the hollow screw are locked with each other. S6. As the hollow screw continues to rotate, at this time, the hollow screw drives the inner closing plate to continue to rotate through the threaded sleeve. The inner closing plate drives the two stirring plates and multiple stirring rods to continuously stir the materials located in the vacuum chamber. After the stirring is completed, the B component is prepared. S7. Stop sucking the inside of the hollow screw by the air inlet and outlet pipe, and at the same time, input air into the inside of the hollow screw through the air inlet and outlet pipe. At this time, driven by the second spring and the third spring, the sliding block and the transverse slider are reset successively. Subsequently, under the push of the air flow, the sealing seat closes the air hole at the center of the bottom of the inner closing plate again. S8. Open the valve on the discharge pipe. At this time, with the continuous drive of the drive motor, the drive motor drives the inner closing plate to continue to descend through the hollow screw and the threaded sleeve. At this time, the inner closing plate and the outer closing plate continue to descend along the inner wall of the shell, thereby pushing the B component inside the shell. When the descending distance of the inner closing plate reaches the third threshold value, the bottoms of the inner closing plate and the outer closing plate contact the bottom of the inner cavity of the shell. At this time, all the B components inside the shell are discharged. S9. Uniformly mix the discharged B component with the A component to prepare the potting adhesive for the solar photovoltaic module junction box.

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