Photovoltaic dispensing sealing device

Abstract

According to the photovoltaic dispensing sealing device, a horizontal partition plate is arranged in a driving cylinder body, so that a driving cavity in the driving cylinder body is divided into an upper cavity body and a lower cavity body, and the upper end of a piston rod which is vertically arranged penetrates through the horizontal partition plate, extends into the upper cavity body and is in sealing fit with the horizontal partition plate; an upper piston disc located in the upper cavity and a lower piston disc located in the lower cavity are arranged on the outer side of the piston rod in a sleeving mode, and the upper piston disc and the lower piston disc are arranged on the piston rod in a sleeving mode through two clamping springs and connected with the outer surface of the piston rod in a sealed mode. A spring in a compressed state is arranged between the lower surface of the lower piston disc and the inner wall of the bottom of the driving cylinder body, and a plurality of air inlet holes facing inwards in the radial direction are formed in the side wall of the piston rod and located above the upper piston disc. Adhesive tape is replaced by adhesive dispensing, the adhesive dispensing continuity and efficiency can be improved, and the stability and consistency of the adhesive outlet flow can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic curtain wall processing, and in particular to a photovoltaic glue dispensing sealing device. Background Art

[0002] Photovoltaic modules are components that use the photovoltaic effect to generate electricity, and are usually composed of solar cells, adhesive films, glass, and cover plates. Photovoltaic building integration is an important application of solar cells. It combines the functions of solar cell power generation and building exterior walls, so that solar cell modules can both generate electricity and replace building materials. In the prior art, the conventional structure of photovoltaic curtain wall components is to attach a front plate glass to the front side of the glass-based photovoltaic power generation chip, and generate electricity through the photoelectric conversion effect of the photovoltaic power generation chip. In the related art, the edges of the glass are sealed by bonding with tape, which requires a lot of manpower. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a photovoltaic glue dispensing sealing device, which replaces the adhesive tape with glue dispensing and can improve the continuity and efficiency of glue dispensing, and can also ensure the stability and consistency of the glue discharge flow rate.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a photovoltaic glue dispensing sealing device, comprising: a glue dispensing valve with a glue inlet and a glue outlet and a glue dispensing head connected to the glue outlet of the glue valve, the glue dispensing valve comprising a driving cylinder, a glue inlet block arranged below the driving cylinder, a piston rod movable in the vertical direction and a glue sealing head installed at the lower end of the piston rod, the glue inlet is arranged on the side wall of the glue inlet block, the glue outlet is arranged on the lower surface of the glue inlet block, the glue inlet and the glue outlet are connected through a glue inlet flow channel horizontally arranged in the glue inlet block and a glue outlet flow channel vertically arranged in the glue inlet block, and the sealing portion of the glue sealing head is located at the glue outlet The connecting rod of the sealing head extends upward into the glue outlet channel and is connected to the piston rod. When the sealing head moves to a high position with the piston rod, its blocking part is sealed with the glue outlet. When the sealing head moves to a low position with the piston rod, a glue outlet gap is formed between the blocking part and the glue outlet. The vertically extending dispensing head is rotatably mounted on a substrate horizontally arranged below the dispensing valve inlet block through a bearing. A motor is mounted on the upper surface of the substrate and located on one side of the dispensing valve. A driven gear is mounted on the outer side of the dispensing head and located below the substrate. The driving gear meshing with the driven gear is drivingly connected to the output shaft of the motor. A horizontal partition is arranged in the driving cylinder body, thereby dividing the driving cavity in the driving cylinder body into an upper cavity and a lower cavity. The upper end of the vertically arranged piston rod passes through the horizontal partition and extends into the upper cavity and is sealed with the horizontal partition. An upper piston disc located in the upper cavity and a lower piston disc located in the lower cavity are respectively mounted on the outer side of the piston rod. The upper piston disc and the lower piston disc are each mounted on the piston rod through two retaining springs and are sealed and connected to the outer surface of the piston rod. A spring in a compressed state is arranged between the lower surface of the lower piston disc and the inner wall of the bottom of the driving cylinder body. A spring connected to the upper cavity is installed on the side wall of the driving cylinder body and located above the upper piston disc. A first air pipe joint is provided, a plurality of radially inward air inlet holes are provided on the side wall of the piston rod and located above the upper piston disk, a first radially inward air outlet hole is provided on the side wall of the piston rod and located between the horizontal partition and the lower piston disk, the air inlet hole and the first air outlet hole are connected through an air path vertically provided in the piston rod, a second air outlet hole is provided on the upper surface of the horizontal partition, a second air pipe joint is installed on the side wall of the driving cylinder body and located outside the horizontal partition, the second air pipe joint is connected with the second air outlet hole through a pipeline provided in the horizontal partition, and a third air outlet hole connected with the lower cavity is provided on the side wall of the lower part of the driving cylinder body.

[0005] The further improved scheme in the above technical scheme is as follows: 1. In the above solution, the piston rod is sealed with the bottom of the drive cylinder.

[0006] 2. In the above solution, a sealing ring is provided between the upper piston disc, the lower piston disc and the inner wall of the upper cavity, and the lower cavity respectively.

[0007] 3. In the above solution, the inner wall of the bottom of the driving cylinder body has a protrusion extending vertically upward, and the lower part of the spring is sleeved on the protrusion.

[0008] 4. In the above solution, a through hole is formed on the raised portion, and the piston rod passes through the through hole and is sealed with the inner wall of the through hole through a sealing ring.

[0009] 5. In the above scheme, a mounting block is arranged between the dispensing valve glue inlet block and the substrate, the upper part of the dispensing head is embedded in the mounting groove opened on the lower surface of the mounting block and is rotatably sealed with the inner wall of the mounting groove through at least two rotating sealing rings, a glue inlet hole is opened on the upper surface of the mounting block, the upper end of the glue inlet hole connected with the mounting groove at the lower end is connected to the glue outlet, and the sealing part of the sealing head is embedded in the glue inlet hole and is gap-matched with the inner wall of the glue inlet hole.

[0010] 6. In the above solution, the mounting block and the glue inlet block of the glue dispensing valve are sealed and connected via a sealing ring arranged on the outside of the glue inlet hole.

[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The photovoltaic glue dispensing sealing device of the present invention has a sealing portion of a glue sealing head located below the glue outlet, a connecting rod portion of the glue sealing head extending upward into the glue outlet flow channel and connected to the piston rod, when the glue sealing head moves to a high position with the piston rod, the sealing portion is sealed with the glue outlet, when the glue sealing head moves to a low position with the piston rod, a glue outlet gap is formed between the sealing portion and the glue outlet, the vertically extending glue dispensing head is rotatably mounted on a substrate horizontally arranged below the glue inlet block of the glue dispensing valve through a bearing, a motor is mounted on the upper surface of the substrate and located on one side of the glue dispensing valve, a driven gear is mounted on the outer side of the glue dispensing head and located below the substrate, a driving gear meshing with the driven gear is drivingly connected to the output shaft of the motor, and the glue dispensing direction can be quickly switched by rotating the glue dispensing head while replacing the adhesive tape and realizing the switching between continuous glue supply and stop of glue supply to the glue dispensing head, thereby improving the continuity and efficiency of glue dispensing.

[0012] 2. The photovoltaic dispensing sealing device of the present invention further provides a horizontal partition in the driving cylinder body, thereby dividing the driving cavity in the driving cylinder body into an upper cavity and a lower cavity, the upper end of the vertically arranged piston rod passes through the horizontal partition and extends into the upper cavity and is sealed with the horizontal partition, and an upper piston disk located in the upper cavity and a lower piston disk located in the lower cavity are respectively mounted on the outer side of the piston rod, a spring in a compressed state is provided between the lower surface of the lower piston disk and the inner wall of the bottom of the driving cylinder body, a first air pipe joint connected to the upper cavity is installed on the side wall of the driving cylinder body and above the upper piston disk, a plurality of radially inward air inlet holes are provided on the side wall of the piston rod and above the upper piston disk, a first radially inward air outlet hole is provided on the side wall of the piston rod and between the horizontal partition and the lower piston disk, the air inlet hole and the first air outlet hole are connected through an air path vertically provided in the piston rod, a second air outlet hole is provided on the upper surface of the horizontal partition, and the driving cylinder body A second air pipe joint is installed on the side wall and located on the outer side of the horizontal partition. The second air pipe joint is connected to the second air outlet through a pipeline opened in the horizontal partition. A third air outlet connected to the lower cavity is opened on the side wall of the lower part of the driving cylinder body. The positioning of the piston disc in the upper cavity and the buffering of the piston disc in the lower cavity are realized through the three air outlet holes. In the case of power failure and gas failure, the piston rod equipped with the piston disc can be driven by the spring to drive the sealing head to move up to seal the glue outlet gap to avoid waste of glue liquid overflow and damage to the product. At the same time, the force of the piston disc when moving downward can be greatly increased without increasing the intake pressure to overcome the action of the spring, thereby ensuring the stability of the glue outlet gap size when the piston rod drives the sealing head to move to a low position, thereby ensuring the stability and consistency of the glue outlet flow rate, and the rapid glue closing can be achieved through the joint action of the spring and the gas entering the lower cavity from the second air pipe joint, thereby further ensuring the stability of the glue liquid during long-term repeated opening and closing of the glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a structural schematic diagram of the photovoltaic glue dispensing sealing device of the present invention; Attached Figure 2 It is a partial structural schematic diagram of the photovoltaic glue dispensing sealing device of the present invention; Attached Figure 3 The local structure section of the photovoltaic glue dispensing sealing device of the present invention is Figure 1 ; Attached Figure 4 The present invention is attached Figure 3 The enlarged schematic diagram of point A in the middle; Attached Figure 5 The local structure section of the photovoltaic glue dispensing sealing device of the present invention is Figure 2 ; Attached Figure 6 The present invention is attached Figure 5 The enlarged schematic diagram of point B in the middle; Attached Figure 7 The present invention is attached Figure 5 Enlarged schematic diagram of point C in the middle.

[0014] In the above drawings: 1, drive cylinder; 2, glue feeding block; 3, piston rod; 4, glue sealing head; 41, sealing part; 42, connecting rod part; 51, glue inlet; 52, glue outlet; 61, glue inlet flow channel; 62, glue outlet flow channel; 7, sealing assembly; 8, horizontal partition; 91, upper cavity; 92, lower cavity; 10, upper piston plate; 11, lower piston plate; 12, sealing ring; 131, first air pipe joint; 132, second air pipe joint; 141, air inlet; 142, air path; 143, first air outlet; 151, second air outlet; 152, pipeline; (153), third air outlet; 16 , dispensing head; 17, bearing; 18, base plate; 191, driven gear; 192, driving gear; 20, motor; 21, support seat; 22, coupling; 23, rotating shaft; 241, induction plate; 242, sensor; 25, mounting block; 251, mounting groove; 252, glue inlet hole; 26, rotating sealing ring; 27, spring; 28, raised part; 29, through hole; 31, dispensing port; 32, retaining ring; 33, pull rod; 34, adjusting cap; 35, stop ring; 36, bushing; 361, oil storage tank; 362, plug; 363, oil inlet hole; 37, plug ring; 39, window hole. DETAILED DESCRIPTION

[0015] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0016] Embodiment 1: A glue dispensing sealing device, used for performing glue dispensing operation at the edge of a perovskite photovoltaic module to achieve sealing, comprising: a glue dispensing valve with a glue inlet 51 and a glue outlet 52 and a glue dispensing head 16 connected to the glue outlet 52 of the glue valve, the glue dispensing valve comprising a driving cylinder 1, a glue inlet block 2 arranged below the driving cylinder 1, a piston rod 3 movable in the vertical direction and a glue sealing head 4 installed at the lower end of the piston rod 3, the glue inlet 51 is arranged on the side wall of the glue inlet block 2, the glue outlet 52 is arranged on the lower surface of the glue inlet block 2, the glue inlet 51 and the glue outlet 52 are connected through a glue inlet flow channel 61 horizontally arranged in the glue inlet block 2 and a glue outlet flow channel 62 vertically arranged in the glue inlet block 2, and the sealing portion 41 of the glue sealing head 4 is located at the glue outlet 52 At the bottom, the connecting rod portion 42 of the sealing head 4 extends upward into the glue outlet channel 62 and is connected to the piston rod 3. When the sealing head 4 moves to a high position with the piston rod 3, its blocking portion 41 is sealed with the glue outlet 52. When the sealing head 4 moves to a low position with the piston rod 3, a glue outlet gap is formed between the blocking portion 41 and the glue outlet 52. The vertically extending dispensing head 16 is rotatably mounted on a substrate 18 horizontally arranged below the dispensing valve inlet block 2 through a bearing 17. A motor 20 is mounted on the upper surface of the substrate 18 and located on one side of the dispensing valve. A driven gear 191 is mounted on the outer side of the dispensing head 16 and located below the substrate 18. A driving gear 192 meshing with the driven gear 191 is drivingly connected to the output shaft of the motor 20. The photovoltaic glass to be glued is placed horizontally under the glue dispensing head of the glue dispensing and sealing device. Under the action of the three-axis driving mechanism, the glue dispensing head is first moved to a suitable height at a corner of the photovoltaic glass and the rectangular glue dispensing port of the glue dispensing head is parallel to one side of the photovoltaic glass. Then the three-axis driving mechanism drives the glue dispensing head to move along the length direction of the other side of the photovoltaic glass and opens the glue dispensing gap of the glue dispensing valve while moving, thereby realizing the glue dispensing operation at the edge of one side of the photovoltaic glass. Next, the driven gear meshing with the driving gear is driven by the rotation of the motor to rotate, so that the dispensing head rotates 90 degrees. During this process, the dispensing gap of the dispensing valve is closed.

[0017] The motor 20 is mounted on the upper surface of the base plate 18 via a support seat 21 . The lower end of the output shaft of the motor 20 is connected to a rotating shaft 23 via a coupling 22 . The lower end of the rotating shaft 23 passes through the base plate 18 and is equipped with the driving gear 192 .

[0018] The rotating shaft 23 is rotatably connected to the base plate 18 via a bearing. A sensing sheet 241 that can rotate with the rotating shaft 23 is installed on the rotating shaft 23 , and a sensor 242 that cooperates with the sensing sheet 241 is installed on the supporting seat 21 .

[0019] The diameter ratio of the driven gear 191 to the driving gear 192 is 2, and two sensors 242 are provided and are spaced 180° apart in the circumferential direction.

[0020] A mounting block 25 is arranged between the dispensing valve glue feeding block 2 and the substrate 18. The upper part of the dispensing head 16 is embedded in a mounting groove 251 provided on the lower surface of the mounting block 25 and is rotatably sealed with the inner wall of the mounting groove 251 through at least two rotating sealing rings 26. A glue feeding hole 252 is provided on the upper surface of the mounting block 25. The upper end of the glue feeding hole 252, whose lower end is connected to the mounting groove 251, is connected to the glue outlet 52. The sealing portion 41 of the sealing head 4 is embedded in the glue feeding hole 252 and is gap-matched with the inner wall of the glue feeding hole 252.

[0021] The mounting block 25 is sealedly connected to the dispensing valve glue inlet block 2 via a sealing ring 12 disposed outside the glue inlet hole 252; the dispensing port 31 of the dispensing head 16 opposite to the dispensing valve glue inlet block 2 is rectangular.

[0022] A horizontal partition 8 is arranged in the driving cylinder 1, thereby dividing the driving cavity in the driving cylinder 1 into an upper cavity 91 and a lower cavity 92. The upper end of the vertically arranged piston rod 3 passes through the horizontal partition 8 and extends into the upper cavity 91 and is sealed with the horizontal partition 8. The outer sides of the piston rod 3 are respectively provided with an upper piston disc 10 located in the upper cavity 91 and a lower piston disc 11 located in the lower cavity 92. A spring 27 in a compressed state is arranged between the lower surface of the lower piston disc 11 and the inner wall of the bottom of the driving cylinder 1. A first air pipe joint 131 connected to the upper cavity 91 is installed on the side wall of the driving cylinder 1 and located above the upper piston disc 10. The side wall of the piston rod 3 and the upper piston disc 10 are provided with a first air pipe joint 131 connected to the upper cavity 91. A plurality of radially inward air inlet holes 141 are provided above the piston rod 3, a radially inward first air outlet hole 143 is provided on the side wall of the piston rod 3 and located between the horizontal partition 8 and the lower piston plate 11, the air inlet hole 141 and the first air outlet hole 143 are communicated through an air path 142 vertically provided in the piston rod 3, a second air outlet hole 151 is provided on the upper surface of the horizontal partition 8, a second air pipe joint 132 is installed on the side wall of the drive cylinder 1 and located outside the horizontal partition 8, the second air pipe joint 132 is communicated with the second air outlet hole 151 through a pipeline 152 provided in the horizontal partition 8, and a third air outlet hole 153 connected with the lower cavity 92 is provided on the side wall of the lower part of the drive cylinder 1; When the dispensing operation is required, air is introduced into the driving cylinder from the first air pipe joint, and a part of the high-pressure gas acts on the upper surface of the upper piston disc to push the upper piston disc downward, and another part of the high-pressure gas acts on the upper surface of the lower piston disc after passing through the air inlet hole, the air path and the first air outlet hole in sequence to push the lower piston disc downward, so that the sealing head moves down to a low position along with the piston rod connected to the piston disc, and the glue discharge gap is opened. The setting of the double piston discs can greatly increase the force of the piston disc when it moves downward without increasing the air intake pressure to overcome the action of the spring, thereby ensuring the stability of the glue discharge gap size when the piston rod drives the sealing head to move to a low position, thereby ensuring the stability and consistency of the glue discharge flow rate; When the dispensing head needs to be reversed and the dispensing of glue needs to be stopped, air is introduced into the driving cylinder from the second air pipe joint. The high-pressure gas passes through the pipeline in the horizontal partition and the second air outlet in sequence and acts on the lower surface of the upper piston disc to push the upper piston disc upward. At the same time, the force of the spring pushes the lower piston disc upward, so that the glue sealing head moves up to a high position with the piston rod connected to the piston disc to seal the glue dispensing gap.

[0023] The piston rod 3 is sealed with the bottom of the driving cylinder 1; a sealing ring 12 is provided between the upper piston disc 10 and the lower piston disc 11 and the inner walls of the upper cavity 91 and the lower cavity 92 respectively; the upper piston disc 10 and the lower piston disc 11 are each mounted on the piston rod 3 through two retaining springs 32 and are sealed with the outer surface of the piston rod 3.

[0024] The inner wall at the bottom of the driving cylinder 1 has a protrusion 28 extending vertically upward, and the lower part of the spring 27 is mounted on the protrusion 28; the protrusion 28 has a through hole 29, and the piston rod 3 passes through the through hole 29 and is sealed with the inner wall of the through hole 29 through a sealing ring.

[0025] Embodiment 2: A photovoltaic glue dispensing sealing device, comprising: a glue dispensing valve having a glue inlet 51 and a glue outlet 52 and a glue dispensing head 16 connected to the glue outlet 52 of the glue valve, wherein the glue dispensing valve comprises a driving cylinder 1, a glue inlet block 2 arranged below the driving cylinder 1, a piston rod 3 movable in the vertical direction and a glue sealing head 4 installed at the lower end of the piston rod 3, wherein the glue inlet 51 is arranged on the side wall of the glue inlet block 2, the glue outlet 52 is arranged on the lower surface of the glue inlet block 2, the glue inlet 51 and the glue outlet 52 are connected through a glue inlet flow channel 61 horizontally arranged in the glue inlet block 2 and a glue outlet flow channel 62 vertically arranged in the glue inlet block 2, the sealing portion 41 of the glue sealing head 4 is located below the glue outlet 52, and the connecting rod of the glue sealing head 4 The portion 42 extends upward into the glue outlet flow channel 62 and is connected to the piston rod 3. When the sealing head 4 moves to a high position with the piston rod 3, its blocking portion 41 is sealed with the glue outlet 52. When the sealing head 4 moves to a low position with the piston rod 3, a glue outlet gap is formed between the blocking portion 41 and the glue outlet 52. The vertically extending dispensing head 16 is rotatably mounted on a substrate 18 horizontally arranged below the dispensing valve inlet block 2 through a bearing 17. A motor 20 is mounted on the upper surface of the substrate 18 and located on one side of the dispensing valve. A driven gear 191 is sleeved on the outer side of the dispensing head 16 and located below the substrate 18. A driving gear 192 meshing with the driven gear 191 is drivingly connected to the output shaft of the motor 20. The dispensing head is driven by a three-axis driving mechanism to move along the length direction of the other side of the photovoltaic glass that is perpendicular to the side where the dispensing has been completed, and the dispensing gap of the dispensing valve is opened while moving, so as to realize the dispensing operation on the edge of the other side of the photovoltaic glass; In this way, continuous glue dispensing operation is realized at the edges of the photovoltaic glass to form a bonding strip that replaces the adhesive tape in the prior art, which is convenient for bonding and fixing the glass-based photovoltaic power generation chip and the front plate glass, and improves the continuity and efficiency of glue dispensing; When the processing equipment suddenly loses power or gas, the lower piston plate drives the piston rod upward under the force of the spring until the sealing head installed on the piston rod seals the glue outlet gap to prevent glue overflow and cause waste and damage to the product.

[0026] A mounting block 25 is arranged between the dispensing valve glue feeding block 2 and the substrate 18. The upper part of the dispensing head 16 is embedded in a mounting groove 251 provided on the lower surface of the mounting block 25 and is rotatably sealed with the inner wall of the mounting groove 251 through at least two rotating sealing rings 26. A glue feeding hole 252 is provided on the upper surface of the mounting block 25. The upper end of the glue feeding hole 252, whose lower end is connected to the mounting groove 251, is connected to the glue outlet 52. The sealing portion 41 of the sealing head 4 is embedded in the glue feeding hole 252 and is gap-matched with the inner wall of the glue feeding hole 252.

[0027] A sealing assembly 7 is provided between the piston rod 3 and the glue feeding block 2 and above the glue feeding channel 61; the sealing assembly 7 further comprises: a sleeve 36 sleeved on the outer side of the piston rod 3, the upper end of the sleeve 36 is embedded in the driving cylinder 1 and a universal seal ring 37 is embedded and installed on the upper end of the sleeve 36, and the lower end of the sleeve 36 is sealed and connected to the upper surface of the glue feeding block 2 through a universal seal ring 37.

[0028] At least one oil storage groove 361 is formed on the side wall of the upper part of the above-mentioned sleeve 36, and at least one oil inlet hole 363 is formed on the side wall of the lower part of the above-mentioned cylinder body 2. Each of the above-mentioned oil inlet holes 363 is correspondingly connected to an oil storage groove 361, so that the oil storage groove can be replenished with grease in real time without disassembly; a plug 362 is embedded and installed on the end of each of the above-mentioned oil inlet holes 363 away from the sleeve 36.

[0029] A window hole 39 is formed on the drive cylinder 1 and located above the shaft sleeve 36 and is passed through in the horizontal direction; a through hole is formed on the piston rod 3; A pull rod 33 is installed in the center of the upper surface of the above-mentioned piston rod 3. The upper end of the above-mentioned pull rod 33 passes through the driving cylinder body 1 and is installed with an adjusting cap 34 that can move up and down. A stop ring 35 is provided on the outside of the above-mentioned pull rod 33 and between the adjusting cap 34 and the driving cylinder body 1. When the above-mentioned pull rod 33 moves to the lower end of the stroke along with the piston rod 3, the upper end surface of the above-mentioned stop ring 35 is pressed and contacted with the lower end surface of the adjusting cap 34; the above-mentioned adjusting cap 34 and the pull rod 33 are connected by threads.

[0030] The dispensing method based on the above-mentioned dispensing sealing device comprises the following steps: Step 1: Install the glue dispensing and sealing device as a whole on the three-axis driving mechanism to perform glue dispensing operations on the edges around the rectangular photovoltaic glass; Step 2: Place the photovoltaic glass to be glued horizontally under the glue dispensing head of the glue dispensing sealing device. Under the action of the three-axis driving mechanism, first move the glue dispensing head to a suitable height at a corner of the photovoltaic glass and make the rectangular glue dispensing port of the glue dispensing head parallel to one side of the photovoltaic glass. Then, the three-axis driving mechanism drives the glue dispensing head to move along the length direction of the other side of the photovoltaic glass and opens the glue dispensing gap of the glue dispensing valve while moving, thereby realizing the glue dispensing operation at the edge of one side of the photovoltaic glass. Specifically, when the dispensing operation is required, air is introduced into the driving cylinder from the first air pipe joint, a part of the high-pressure gas acts on the upper surface of the upper piston disc to push the upper piston disc downward, and another part of the high-pressure gas passes through the air inlet, the air path and the first air outlet in sequence and acts on the upper surface of the lower piston disc to push the lower piston disc downward, so that the sealing head moves down to a low position along with the piston rod connected to the piston disc, and the dispensing gap is opened; Step 3: The driven gear meshing with the driving gear is driven by the rotation of the motor to rotate, so that the dispensing head rotates 90°. During this process, the dispensing gap of the dispensing valve is closed; Specifically, when it is necessary to close the glue dispensing gap of the glue dispensing valve to stop dispensing glue, air is introduced into the driving cylinder from the second air pipe joint, and the high-pressure gas sequentially passes through the pipeline in the horizontal partition and the second air outlet hole and acts on the lower surface of the upper piston disc to push the upper piston disc upward. At the same time, the action of the spring pushes the lower piston disc upward, so that the glue sealing head moves up to a high position with the piston rod connected to the piston disc to seal the glue dispensing gap; Step 4: Drive the dispensing head through the three-axis drive mechanism to move along the length direction of the other side of the photovoltaic glass that is perpendicular to the side where dispensing has been completed, and open the dispensing gap of the dispensing valve while moving, so as to realize the dispensing operation at the edge of the other side of the photovoltaic glass. In this way, continuous dispensing operation is realized on the edges around the photovoltaic glass, thereby improving the continuity and efficiency of dispensing.

[0031] When the processing equipment is suddenly out of power or gas, the lower piston plate drives the piston rod upward under the action of the spring until the sealing head installed on the piston rod seals the glue outlet gap to avoid glue overflow and waste and damage to the product; When the dispensing operation is required, air is introduced into the driving cylinder from the first air pipe joint, and a part of the high-pressure gas acts on the upper surface of the upper piston disc to push the upper piston disc downward, and another part of the high-pressure gas acts on the upper surface of the lower piston disc after passing through the air inlet hole, the air path and the first air outlet hole in sequence to push the lower piston disc downward, so that the sealing head moves down to a low position along with the piston rod connected to the piston disc, and the glue discharge gap is opened. The setting of the double piston discs can greatly increase the force of the piston disc when it moves downward without increasing the air intake pressure to overcome the action of the spring, thereby ensuring the stability of the glue discharge gap size when the piston rod drives the sealing head to move to a low position, thereby ensuring the stability and consistency of the glue discharge flow rate; When the dispensing head needs to be reversed and the dispensing of glue needs to be stopped, air is introduced into the driving cylinder from the second air pipe joint. The high-pressure gas passes through the pipeline in the horizontal partition and the second air outlet in sequence and acts on the lower surface of the upper piston disc to push the upper piston disc upward. At the same time, the force of the spring pushes the lower piston disc upward, so that the glue sealing head moves up to a high position with the piston rod connected to the piston disc to seal the glue dispensing gap.

[0032] When the above-mentioned photovoltaic glue dispensing sealing device is used, while realizing the switching between continuous glue supply and stop glue supply to the glue dispensing head, the glue dispensing direction can be quickly switched by rotating the glue dispensing head, thereby improving the continuity and efficiency of glue dispensing; further, the positioning of the piston disc in the upper cavity and the buffering of the piston disc in the lower cavity are realized through three air outlet holes, and in the case of power failure and air failure, the piston rod equipped with the piston disc can be driven by the spring to drive the glue sealing head to move up and seal the glue outlet gap to avoid glue liquid overflow and waste and damage to the product, and the force of the piston disc when moving downward can be greatly increased without increasing the intake pressure to overcome the action of the spring, thereby ensuring the stability of the glue outlet gap size when the piston rod drives the glue sealing head to move to a low position, thereby ensuring the stability and consistency of the glue outlet flow rate, and the rapid glue closing can also be achieved by the joint action of the spring and the gas entering the lower cavity from the second air pipe joint, thereby further ensuring the stability of the glue liquid during long-term repeated opening and closing of the glue.

[0033] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic glue dispensing sealing device, comprising: A glue dispensing valve having a glue inlet (51) and a glue outlet (52) and a glue dispensing head (16) connected to the glue outlet (52) of the glue dispensing valve, wherein the glue dispensing valve comprises a drive cylinder (1), a glue inlet block (2) arranged below the drive cylinder (1), a piston rod (3) movable in a vertical direction, and a glue sealing head (4) mounted on the lower end of the piston rod (3), wherein the glue inlet (51) is arranged on a side wall of the glue inlet block (2), the glue outlet (52) is arranged on a lower surface of the glue inlet block (2), the glue inlet (51) and the glue outlet (52) are connected via a glue inlet flow channel (61) horizontally arranged in the glue inlet block (2) and a glue outlet flow channel (62) vertically arranged in the glue inlet block (2), and the glue sealing head (4) is characterized in that: a sealing portion (41) of the glue sealing head (4) is located below the glue outlet (52), and a connecting rod portion (42) of the glue sealing head (4) is arranged to extend toward the glue outlet (52). The dispensing head (16) extends upward into the glue outlet channel (62) and is connected to the piston rod (3); when the dispensing head (4) moves to a high position along with the piston rod (3), its sealing portion (41) is sealed and matched with the glue outlet (52); when the dispensing head (4) moves to a low position along with the piston rod (3), a glue outlet gap is formed between the sealing portion (41) and the glue outlet (52); the dispensing head (16) extending vertically is rotatably mounted on a substrate (18) horizontally arranged below the dispensing valve glue inlet block (2) via a bearing (17); a motor (20) is mounted on the upper surface of the substrate (18) and located on one side of the dispensing valve; a driven gear (191) is sleeved on the outer side of the dispensing head (16) and located below the substrate (18); a driving gear (192) meshing with the driven gear (191) is drivingly connected to the output shaft of the motor (20); A horizontal partition (8) is provided in the drive cylinder (1), thereby dividing the drive cavity in the drive cylinder (1) into an upper cavity (91) and a lower cavity (92). The upper end of the vertically arranged piston rod (3) passes through the horizontal partition (8) and extends into the upper cavity (91) and is sealed with the horizontal partition (8). The outer side of the piston rod (3) is respectively provided with an upper piston disc (10) located in the upper cavity (91) and a lower piston disc (11) located in the lower cavity (92). The upper piston disc (10) and the lower piston disc (11) are each provided on the piston rod (3) through two retaining springs (32) and are sealed with the outer surface of the piston rod (3). A spring (27) in a compressed state is provided between the lower surface of the lower piston disc (11) and the inner wall of the bottom of the drive cylinder (1). A first air pipe connected to the upper cavity (91) is installed on the side wall of the drive cylinder (1) and above the upper piston disc (10). A joint (131), a plurality of air inlet holes (141) are provided on the side wall of the piston rod (3) and located above the upper piston plate (10) and radially inwardly facing each other, a first air outlet hole (143) is provided on the side wall of the piston rod (3) and located between the horizontal partition plate (8) and the lower piston plate (11) and radially inwardly facing each other, the air inlet hole (141) and the first air outlet hole (143) are connected to each other through an air path (142) vertically provided in the piston rod (3), the A second air outlet (151) is provided on the upper surface of the horizontal partition (8); a second air pipe joint (132) is installed on the side wall of the drive cylinder (1) and located outside the horizontal partition (8); the second air pipe joint (132) is connected to the second air outlet (151) via a pipeline (152) provided in the horizontal partition (8); and a third air outlet (153) is provided on the side wall of the lower part of the drive cylinder (1) and is connected to the lower cavity (92).

2. The photovoltaic glue dispensing sealing device according to claim 1, characterized in that: The piston rod (3) is in sealing cooperation with the bottom of the drive cylinder body (1).

3. The photovoltaic glue dispensing sealing device according to claim 1, characterized in that: A sealing ring (12) is provided between the upper piston disc (10) and the lower piston disc (11) and the inner wall of the upper cavity (91) and the lower cavity (92).

4. The photovoltaic glue dispensing sealing device according to claim 1, characterized in that: The inner wall at the bottom of the driving cylinder body (1) is provided with a protrusion (28) extending vertically upwards, and the lower part of the spring (27) is sleeved on the protrusion (28).

5. The photovoltaic glue dispensing sealing device according to claim 1, characterized in that: The raised portion (28) is provided with a through hole (29), and the piston rod (3) passes through the through hole (29) and is sealed with the inner wall of the through hole (29) via a sealing ring.

6. The photovoltaic glue dispensing sealing device according to claim 1, characterized in that: A mounting block (25) is provided between the dispensing valve glue feeding block (2) and the base plate (18); the upper portion of the dispensing head (16) is embedded in a mounting groove (251) provided on the lower surface of the mounting block (25) and is rotatably sealed with the inner wall of the mounting groove (251) through at least two rotating sealing rings (26); a glue feeding hole (252) is provided on the upper surface of the mounting block (25); the upper end of the glue feeding hole (252) whose lower end is connected to the mounting groove (251) is connected to the glue outlet (52); and the sealing portion (41) of the sealing head (4) is embedded in the glue feeding hole (252) and is gap-matched with the inner wall of the glue feeding hole (252).

7. The photovoltaic glue dispensing sealing device according to claim 6, characterized in that: The mounting block (25) and the dispensing valve glue inlet block (2) are sealed and connected via a sealing ring (12) arranged outside the glue inlet hole (252).

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