A photovoltaic cell screen roll tabletop paper replacement device

Abstract

This invention relates to the field of photovoltaic cell manufacturing technology, and more particularly to a photovoltaic cell screen roll-type tabletop paper replacement device. The device includes a tabletop serving as the carrier of the entire device. A mounting frame is fixedly connected to the tabletop, and paper rolls a and b for replacing the tabletop paper are rotatably mounted on the mounting frame. Motors a and b, respectively for driving paper rolls a and b, are fixedly mounted on the tabletop. A winding mechanism for transmitting the tabletop paper is provided on the tabletop, and a monitoring mechanism for monitoring the usage status of the tabletop paper is also installed on the tabletop. The winding mechanism includes a motor c fixedly mounted on the tabletop. Multiple transmission plates are provided on the exterior of paper roll b. An adhesive assembly for continuously winding the tabletop paper is provided on the tabletop, and a dewinding assembly and a pushing assembly for cleaning the tabletop paper are also provided on the tabletop. This invention only requires electrical components to be installed on designated transmission plates, eliminating the need for multiple transmission plates, thus saving costs.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell production technology, specifically to a photovoltaic cell screen roll table paper replacement device. Background Technology

[0002] In the photovoltaic cell production process, screen-wound printing plates are widely used to protect the surface of photovoltaic cells. Topcon photovoltaic cells employ a special production process that requires a highly precise printing plate replacement device to ensure smooth production. Existing printing plate replacement devices require a robotic arm to remove all the printing plates from both sides of the printing plate before replacing them with new ones. This results in the removal of all printing plates from the printing plate, leaving some unused printing plates between the photovoltaic cells and the printing plates. Since the printing plates in the middle of the sides have been used, the remaining printing plates on both sides cannot be matched to the size of the photovoltaic cells, making them difficult to reuse. This leads to a waste of printing plates, increasing production costs and affecting the continuous operation of the entire production line. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a photovoltaic cell wire mesh roll table paper replacement device, which has the advantages of continuously feeding table paper, making each part of the table paper usable, thus reducing costs, and solving the problem of table paper waste caused by removing the remaining table paper from paper rolls b and a.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A photovoltaic cell screen roll-type tabletop paper replacement device includes a tabletop serving as the carrier of the entire device. A mounting frame is fixedly connected to the tabletop, and paper rolls a and b for replacing tabletop paper are rotatably mounted on the mounting frame. Motors a and b for driving paper rolls a and b respectively are fixedly mounted on the tabletop. A winding mechanism for tabletop paper transmission is provided on the tabletop, and a monitoring mechanism for monitoring the usage of tabletop paper is also installed on the tabletop. The winding mechanism includes a motor c fixedly mounted on the tabletop. There are two sets of paper rolls b. The output end of motor c is fixedly connected to a connecting plate for changing the position of the two paper rolls b. The two sets of paper rolls b are respectively installed on both sides of the connecting plate. Multiple transmission plates are provided on the outside of the paper rolls b. An adhesive component for continuously winding tabletop paper is provided on the tabletop, and a dewinding component and a pushing component for cleaning tabletop paper are also provided on the tabletop.

[0006] Preferably, the bonding assembly includes a guide tube fixed to the bottom of the tabletop, a plurality of nozzles for spraying adhesive fixed to the guide tube, a load-bearing plate fixed to the bottom of the tabletop, an electric telescopic rod fixed to the load-bearing plate, a load-bearing plate fixed to the free end of the electric telescopic rod, a connecting rod fixed to the load-bearing plate, and a blade for cutting the tabletop paper fixed to the end of the connecting rod.

[0007] Preferably, one of the transmission plates is equipped with an electric heating element for melting glue, a transmitter corresponding to the transmission plate is fixed on the paper roll b, a base plate is provided on the load-bearing plate, and a receiver for calibrating the position of one of the transmission plates is installed on the base plate. The transmission plate equipped with the electric heating element is bonded to the table paper with glue.

[0008] Preferably, the unwinding assembly includes a bidirectional lead screw fixedly installed inside the paper roll b. Sleeves are threadedly connected to both sides of the bidirectional lead screw. A transmission strip is fixedly connected to the transmission plate and slidably connected to the paper roll b. Connecting strips are hinged between the two sleeves on both sides of the transmission strip. A gear is fixedly connected to the bidirectional lead screw. Tooth sets a and b are fixedly connected to the table for the retraction and opening of the transmission plate. Tooth sets a and b correspond to the inner and outer teeth of the gear, respectively. When tooth sets a and b mesh with the gear, the bidirectional lead screw rotates forward and reverse. Tooth sets a and b are both distributed around the output shaft of the motor c.

[0009] Preferably, the pushing component includes a frame fixed to a load-bearing plate, a screw rotatably mounted inside the frame, a motor d fixed on the frame for driving the screw to rotate, and a pusher block for pushing the back cover paper of the winding assembly threadedly connected to the screw, the pusher block being slidably connected to the frame through a slide groove.

[0010] Preferably, the monitoring mechanism includes a support plate fixed to the bottom of the table, a top rod slidably connected to the support plate, a transmission disc fitted on the top rod, a spring fixed between the transmission disc and the support plate, a contact fixed to the end of the top rod away from the paper roll a, a touch button corresponding to the contact fixedly mounted on the support plate, and a sounder for reminding the staff fixedly mounted at the bottom of the table.

[0011] Preferably, a microcontroller is fixedly mounted on the bottom of the tabletop, and the microcontroller is electrically connected to the touch button and the sound generator respectively.

[0012] Preferably, deflection wheels are installed on both sides of the tabletop for adhering the tabletop paper to the tabletop.

[0013] Preferably, the mounting bracket has a slot, a bearing is embedded in the slot, the bearing is locked by a locking bolt screwed into the slot, and a mounting shaft is fixedly installed on the inner ring of the bearing, and the paper roll a is installed on the mounting shaft.

[0014] Preferably, a container for storing adhesive is placed under the table surface, and the pump body on the container is connected to the guide pipe through a connecting pipe.

[0015] By employing the above technical solution, the present invention provides a photovoltaic cell screen roll-type tabletop paper replacement device, which has at least the following beneficial effects:

[0016] 1. This photovoltaic cell screen roll type table paper replacement device calibrates the position of the transmission plate connected to the table paper by adhesive so that it is directly below. Then, the heating element heats the transmission plate, causing the adhesive on the transmission plate to melt. This eliminates the rigid connection between the table paper and the paper roll b, making it easier to remove the table paper from the paper roll b. Calibrating one of the transmission plates ensures that when it is moved to the top, the nozzle can accurately spray adhesive onto the designated transmission plate, ensuring that the paper roll b can rewind the table paper.

[0017] 2. This photovoltaic cell wire mesh roll table paper replacement device only requires electrical components to be installed on a designated transmission plate, instead of multiple transmission plates, which saves costs. It can continuously transport table paper without removing the remaining table paper from rolls b and a, thus avoiding waste of table paper and reducing costs.

[0018] 3. In this photovoltaic cell screen roll table paper replacement device, the rotation of the bidirectional screw causes the two screw sleeves to move to both sides. The screw sleeves pull the transmission bar to move inward through the connecting bar. The transmission plate retracts as the transmission bar moves, and can then unwind the table paper, making it easy to remove the wound table paper.

[0019] 4. The photovoltaic cell screen roll table paper replacement device has a deflection wheel that keeps the lower surface of the table paper flush with the upper surface of the table, thus ensuring that the table paper adheres tightly to the table and does not curl up, which helps improve the processing quality.

[0020] 5. When the thickness of the photovoltaic cell screen roll table paper replacement device decreases to the point where the table paper is used up, the contact head moves to the touch button and contacts it. Then the sounder is activated to remind the staff to replace the new paper roll a containing the table paper. This eliminates the need for staff to constantly monitor the table paper usage and reduces the workload of the staff. Attached Figure Description

[0021] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front.

[0023] Figure 2This is a three-dimensional structural diagram of the present invention viewed from below;

[0024] Figure 3 This is a schematic diagram of the winding mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the unwinding assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the adhesive assembly of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of point A;

[0028] Figure 7 This is a schematic diagram of the push component of the present invention;

[0029] Figure 8 This is a schematic diagram of the monitoring mechanism of the present invention.

[0030] Figure label:

[0031] 100. Tabletop; 101. Mounting bracket; 102. Deflector wheel; 103. Motor a; 104. Paper roll a; 105. Bearing; 106. Locking bolt;

[0032] 200. Rewinding mechanism; 201. Paper roll b; 202. Transmission plate; 203. Dewinding assembly; 2031. Two-way lead screw; 2032. Screw sleeve; 2033. Connecting bar; 2034. Transmission bar; 2035. Gear; 2036. Gear assembly a; 2037. Gear assembly b; 204. Connecting plate; 205. Motor b; 206. Motor c; 207. Adhesive assembly; 2071. Load-bearing plate; 2072. Guide pipe; 2073. Nozzle; 2074. Electric telescopic rod; 2075. Load-bearing plate; 2076. Connecting rod; 2077. Blade; 2078. Base plate; 2079. Receiver; 20791. Transmitter; 20792. Heating element; 20793. Material hopper; 208. Pushing assembly; 2081. Frame; 2082. Screw; 2083. Push block; 2084. Motor d;

[0033] 300. Monitoring mechanism; 301. Support plate; 302. Spring; 303. Transmission disc; 304. Top rod; 305. Contact; 306. Touch button; 307. Sound generator; 308. Microcontroller. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Topcon photovoltaic cells employ a special production process that requires a highly precise table paper changing device to ensure smooth production. This device needs to adapt to the special dimensions and requirements of Topcon cells to ensure the stable operation of the production line. Traditional table paper changing devices require removing all the paper rolls on both sides and replacing them with new ones, which is a cumbersome process that requires multiple movements and operations by the robotic arm, affecting accuracy.

[0036] Example 1:

[0037] Combination Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the present invention provides a photovoltaic cell screen roll type table paper replacement device, including a table 100 as the carrier of the entire device. A mounting frame 101 is fixedly connected to the table 100 to facilitate the installation of corresponding parts by the operator during machine assembly. A paper roll a104 and a paper roll b201 for replacing the table paper are rotatably mounted on the mounting frame 101. A motor a103 and a motor b205 for driving the paper roll a104 and the paper roll b201 respectively are fixedly mounted on the table 100 to realize automatic replacement of the table paper. A winding mechanism 200 for transmitting the table paper is provided on the table 100 to process the used table paper. A monitoring mechanism 300 for reminding the operator to replace the table paper is also installed on the table 100. When the table paper on the motor a103 is used up, it can remind the operator to replace it in time.

[0038] By setting two sets of paper rolls b201, the tabletop paper can be replaced after use, enabling continuous operation without the need for disassembly and replacement with new paper rolls b201. The winding mechanism 200 includes a motor c206 fixedly mounted on the tabletop 100. There are two sets of paper rolls b201. The output end of the motor c206 is fixedly connected to a connecting plate 204 for changing the position of the two paper rolls b201. The two sets of paper rolls b201 are respectively installed on both sides of the connecting plate 204. When too much tabletop paper is wound on the paper roll b201, the motor c206 starts to drive the connecting plate 204 to rotate, changing the position of the two paper rolls b201, and the other paper roll is then wound. The paper roll b201 can continue to be wound without stopping the machine to clean the table paper on the paper roll b201. The outside of the paper roll b201 is provided with multiple drive plates 202. The table 100 is provided with an adhesive component 207 for continuously winding the table paper. The adhesive component 207 allows another paper roll b201 to be bonded to the table paper and can cut the bond between the wound paper roll b201 and the table paper. The table 100 is also provided with a dewinding component 203 and a pushing component 208 for cleaning the table paper, which can remove the table paper wound by the paper roll b201, thereby enabling continuous winding of the table paper.

[0039] Specifically, as the paper roll b201 collects the table paper, the height of the table paper on the paper roll b201 gradually increases, causing it to gradually lift off the table. This prevents the table paper from making close contact with the table. However, deflection wheels 102 are installed on both sides of the table 100 to ensure that the lower surface of the table paper is flush with the upper surface of the table 100. This ensures that the table paper adheres tightly to the table 100 and does not lift up, which helps improve the processing quality.

[0040] Furthermore, the mounting bracket 101 has a slot, in which a bearing 105 is embedded. The bearing 105 is locked by a locking bolt 106 screwed into the slot. An mounting shaft is fixedly installed on the inner ring of the bearing 105. The paper roll a104 is installed on the mounting shaft. The snap-fit ​​mechanism makes it easy for workers to replace the paper roll a104, which helps to improve work efficiency.

[0041] As can be seen from the embodiment, since the table paper cannot be tightly attached to the table surface 100, dust, moisture and other debris will enter under the table surface 100. The setting of the deflection wheel 102 can make the table paper adhere to the table surface 100.

[0042] Example 2:

[0043] Combination Figures 3-6As shown, based on Embodiment 1, the bonding component 207 reconnects the unused paper roll b201 to the tabletop paper, achieving the function of continuously rewinding the used tabletop paper. The bonding component 207 includes a guide pipe 2072 fixed to the bottom of the tabletop 100, which can deliver adhesive for bonding operations. Multiple nozzles 2073 for spraying adhesive are fixed to the guide pipe 2072. A load-bearing plate 2071 is also fixed to the bottom of the tabletop 100. An electric telescopic rod 2074 is fixed to the load-bearing plate 2071. A load-bearing plate 2075 is fixed to the free end of the electric telescopic rod 2074. A connecting rod 2076 is fixed to the load-bearing plate 2075. A blade 2077 for cutting the tabletop paper is fixed to the end of the connecting rod 2076. First, after the two paper rolls b201 are swapped, the nozzle 2073 sprays glue onto the transmission plate 202 on the upper paper roll b201. Then, the motor b205 starts and drives the paper roll b201 to rotate. The transmission plate 202 with glue rotates to the table paper position and contacts it. The electric telescopic rod 2074 starts and extends its free end, pushing the connecting rod 2076 on the load-bearing plate 2075 to move towards the table paper. The connecting rod 2076 drives the blade 2077 to move forward and cut the bond between the lower paper roll b201 and the table paper. At this time, the upper paper roll b201 rotates to continue winding the table paper. The table paper can be continuously replaced without removing the paper roll b201.

[0044] Specifically, by melting the adhesive connecting the transmission plate 202 to the table paper, the table paper is easily removed from the paper roll b201. One of the transmission plates 202 contains a heating element 20792 for melting the adhesive. A transmitter 20791 corresponding to one of the transmission plates 202 is fixedly mounted on the paper roll b201. The transmitter 20791 is a device based on radio wave or infrared technology for communication and information transmission. A base plate 2078 is provided on the load-bearing plate 2075. A receiver 2079 is installed on the base plate 2078 to calibrate the position of one of the transmission plates 202. This receiver can identify signals sent by a specific transmitter 20791 and perform corresponding operations based on the signal content, realizing remote control, automated operation, or data transmission and control in a sensor network. The transmission plate 202 with the heating element 20792 is bonded to the table paper with adhesive. The paper roll b201 below rotates. Due to the base plate 20792 below the paper roll b201... A receiver 2079 is provided on the 078. When the transmitter 20791 and receiver 2079 on the paper roll b201 are on the same vertical plane, the receiver 2079 receives the signal from the transmitter 20791. Subsequently, the paper roll b201 stops rotating and calibrates the position of the transmission plate 202, which is connected to the table paper by adhesive, so that it is directly below. Then, the heating element 20792 heats the transmission plate 202, causing the adhesive on the transmission plate 202 to melt. This eliminates the rigid connection between the table paper and the paper roll b201, making it easier to remove the table paper from the paper roll b201. Calibrating one of the transmission plates 202 ensures that when it is moved to the top, the nozzle 2073 can accurately spray adhesive onto the designated transmission plate 202, ensuring that the paper roll b201 can rewind the table paper. Furthermore, only the designated transmission plate 202 needs to be equipped with electrical components, instead of multiple transmission plates 202, which saves costs.

[0045] Furthermore, a material tank 20793 for storing adhesive is placed under the table 100. The pump body on the material tank 20793 is connected to the guide pipe 2072 through a connecting pipe. The pump body delivers the adhesive to the guide pipe 2072 through the connecting pipe, and then the guide pipe 2072 sprays the adhesive from the nozzle 2073 onto the designated transmission plate 202.

[0046] As can be seen from the embodiments, precise positioning of the tabletop paper and the transmission plate 202 is achieved, ensuring the accuracy of glue spraying and bonding. This precise positioning design improves the accuracy and reliability of the work and reduces errors and waste.

[0047] Example 3:

[0048] Combination Figure 3 , Figure 4 and Figure 7As shown in Example 1, during the winding of the paper roll, the thickness of the paper roll b201 continuously increases. When a certain thickness is reached, the paper roll on the paper roll b201 needs to be processed. The unwinding assembly 203 includes a bidirectional lead screw 2031 fixedly installed inside the paper roll b201. Screw sleeves 2032 are threadedly connected to both sides of the bidirectional lead screw 2031. A transmission strip 203, which is slidably connected to the paper roll b201, is fixedly connected to the transmission plate 202. 4. Connecting bars 2033 are hinged to both sides of the transmission bar 2034 between two threaded sleeves 2032. A gear 2035 is fixedly connected to the double-acting lead screw 2031. Gear sets a2036 and b2037 for the contraction and opening of the transmission plate 202 are fixedly connected to the platform 100. Gear sets a2036 and b2037 correspond to the inner and outer teeth of the gear 2035, respectively. Gear sets a2036 and b2037 are related to the gear 2035. During engagement, the bidirectional lead screw 2031 rotates forward and reverse. Gear sets a2036 and b2037 are both centered on the output shaft of motor c206. Motor c206 drives the connecting plate 204, causing the two paper rolls b201 to revolve around the output shaft of motor c206. Gears 2035 on the upper and lower paper rolls b201 mesh with gear sets b2037 and a2036 respectively, providing transmission. The upper gear 2035 drives... The rotating bidirectional lead screw 2031 causes the two threaded sleeves 2032 to move to both sides. The threaded sleeves 2032 pull the transmission bar 2034 to move inward through the connecting bar 2033. The transmission plate 202 retracts as the transmission bar 2034 moves, and can then unwind from the wound table paper, making it easy to remove the wound table paper. Meanwhile, the bidirectional lead screw 2031 below rotates in the opposite direction, and the transmission plate 202 opens outward to reset.

[0049] Specifically, excessive paper on the worktable can cause the center of gravity of the paper roll b201 to shift, leading to equipment instability and making it prone to tipping or shaking, thus affecting production safety. Therefore, a pushing component 208 is required. The pushing component 208 includes a frame 2081 fixed to the load-bearing plate 2075. A screw 2082 is rotatably installed inside the frame 2081. A motor d2084 for driving the screw 2082 to rotate is fixed on the frame 2081. A pusher block 2083 for pushing the paper on the back of the winding is threaded onto the screw 2082. The pusher block 2083 is slidably connected to the frame 2081 through a sliding groove. When the motor d2084 moves with the load-bearing plate 2075 to the paper roll b201 below, the motor d2084 starts and drives the screw 2082 to rotate. The rotation of the screw 2082 causes the pusher block 2083 to move to one side, pushing away the paper on the paper roll b201. After the paper is pushed away, the device is reset.

[0050] As can be seen from the embodiments, the automated operation of pushing and resetting the tabletop paper is realized, which reduces manual intervention and labor intensity, improves work efficiency, and saves labor costs.

[0051] Example 4:

[0052] Combination Figures 1-8 As shown, based on Embodiment 1, the monitoring mechanism 300 can monitor the amount of paper on the worktable and provide reminders to staff, ensuring that production is not interrupted due to the paper roll running out. The monitoring mechanism 300 includes a support plate 301 fixed to the bottom of the worktable 100. A top rod 304 is slidably connected to the support plate 301. A transmission disc 303 is mounted on the top rod 304. A spring 302 is fixed between the transmission disc 303 and the support plate 301. A contact 305 is fixed to the end of the top rod 304 away from the paper roll a104. A touch button 306 corresponding to the contact 305 is fixedly mounted on the support plate 301. The bottom of the worktable 100 is fixedly... Equipped with a sounder 307 to remind workers, a spring 302 pushes a push rod 304 on a transmission disc 303 to move towards the paper roll a104, so that the end of the push rod 304 is always in contact with the paper roll a104. As the paper on the paper roll a104 decreases, its thickness also decreases, and the push rod 304 advances further. When the thickness decreases to the point where the paper on the paper roll is used up, the contact 305 moves to the touch button 306 and contacts it. Then the sounder 307 is activated to emit a sound to remind workers to replace the paper roll a104 with a new paper roll containing paper on the paper roll. Workers do not need to constantly monitor the paper usage, reducing their workload.

[0053] Specifically, a microcontroller 308 is fixedly mounted at the bottom of the tabletop 100. The microcontroller 308 is electrically connected to the touch button 306 and the sound generator 307. After the touch button 306 contacts the contact 305, it sends a signal to the microcontroller 308. After receiving the signal, the microcontroller 308 adds instructions to the sound generator 307, and the sound generator 307 emits a sound to remind the staff, thus realizing automated operation.

[0054] As can be seen from the above embodiments: the table paper is wound around the paper roll a104, and then the outer end of the paper roll is connected to another paper roll b201. When it is necessary to replace the table paper on the table 100, the motors a103 and b205 connected to the paper rolls a104 and b201 rotate to drive the paper rolls a104 and b201 to rotate and rewind the table paper, thereby causing the used table paper to move to one side. After moving the width of one table 100, the motors a103 and b205 stop rotating, completing the replacement of the table paper.

[0055] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic cell screen roll type tabletop paper replacement device, comprising a tabletop (100) serving as the carrier of the entire device, characterized in that: A mounting frame (101) is fixedly connected to the platform (100). A paper roll a (104) and a paper roll b (201) for replacing the platform paper are rotatably mounted on the mounting frame (101). A motor a (103) and a motor b (205) for driving the paper roll a (104) and the paper roll b (201) respectively are fixedly mounted on the platform (100). A winding mechanism (200) for transmitting the platform paper is provided on the platform (100). A monitoring mechanism (300) for monitoring the usage of the platform paper is also installed on the platform (100). The winding mechanism (200) includes a motor c (206) fixedly mounted on the table (100), two sets of paper rolls b (201) are provided, and the output end of the motor c (206) is fixedly connected to a connecting plate (204) for changing the position of the two paper rolls b (201). The two sets of paper rolls b (201) are respectively installed on both sides of the connecting plate (204). Multiple transmission plates (202) are provided on the outside of the paper rolls b (201). The table (100) is provided with an adhesive assembly (207) for continuously winding the table paper. The table (100) is also provided with a dewinding assembly (203) and a pushing assembly (208) for cleaning the table paper. One of the transmission plates (202) is equipped with an electric heating element (20792) for melting glue. A transmitter (20791) corresponding to the transmission plate (202) is fixed on the paper roll (201). A base plate (2078) is provided on the load-bearing plate (2075). A receiver (2079) for calibrating the position of one of the transmission plates (202) is installed on the base plate (2078). The transmission plate (202) equipped with the electric heating element (20792) is bonded to the table paper with glue.

2. The photovoltaic cell screen roll table paper replacement device according to claim 1, characterized in that: The bonding assembly (207) includes a guide tube (2072) fixed to the bottom of the tabletop (100), a plurality of nozzles (2073) for spraying glue fixed to the guide tube (2072), a load-bearing plate (2071) fixed to the bottom of the tabletop (100), an electric telescopic rod (2074) fixed to the load-bearing plate (2071), a load-bearing plate (2075) fixed to the free end of the electric telescopic rod (2074), a connecting rod (2076) fixed to the load-bearing plate (2075), and a blade (2077) for cutting the tabletop paper fixed to the end of the connecting rod (2076).

3. The photovoltaic cell screen roll tabletop paper replacement device according to claim 1, characterized in that: The unwinding assembly (203) includes a bidirectional lead screw (2031) fixedly installed inside the paper roll b (201). Screw sleeves (2032) are threaded onto both sides of the bidirectional lead screw (2031). A transmission strip (2034) slidably connected to the paper roll b (201) is fixedly connected to the transmission plate (202). Connecting strips (2033) are hinged between both sides of the transmission strip (2034) and the two screw sleeves (2032). A gear (2035) is fixedly connected to the bidirectional lead screw (2031). A plate (100) is fixedly connected to... There are tooth sets a (2036) and a tooth set b (2037) for the retraction and opening of the transmission plate (202). Tooth sets a (2036) and tooth sets b (2037) correspond to the inner and outer teeth of the gear (2035) respectively. When tooth sets a (2036) and tooth sets b (2037) mesh with the gear (2035), the bidirectional lead screw (2031) rotates forward and reverse. Tooth sets a (2036) and tooth sets b (2037) are both distributed with the output shaft of the motor c (206) as the center.

4. The photovoltaic cell screen roll table paper replacement device according to claim 1, characterized in that: The pushing component (208) includes a frame (2081) fixed to a load-bearing plate (2075), a screw (2082) rotatably mounted inside the frame (2081), a motor d (2084) for driving the screw (2082) to rotate fixed on the frame (2081), and a push block (2083) for pushing the back cover paper of the winding is threadedly connected to the screw (2082), and the push block (2083) is slidably connected to the frame (2081) through a sliding groove.

5. The photovoltaic cell screen roll table paper replacement device according to claim 1, characterized in that: The monitoring mechanism (300) includes a support plate (301) fixed to the bottom of the table (100), a top rod (304) slidably connected to the support plate (301), a transmission disc (303) fitted on the top rod (304), a spring (302) fixed between the transmission disc (303) and the support plate (301), a contact (305) fixed to the end of the top rod (304) away from the paper roll a (104), a touch button (306) corresponding to the contact (305) fixed on the support plate (301), and a sounder (307) for reminding staff fixed to the bottom of the table (100).

6. The photovoltaic cell screen roll table paper replacement device according to claim 5, characterized in that: A microcontroller (308) is fixedly mounted on the bottom of the tabletop (100), and the microcontroller (308) is electrically connected to the touch button (306) and the sound generator (307).

7. The photovoltaic cell screen roll table paper replacement device according to claim 1, characterized in that: Both sides of the tabletop (100) are equipped with deflection wheels (102) for adhering the tabletop paper to the tabletop (100).

8. The photovoltaic cell screen roll table paper replacement device according to claim 1, characterized in that: The mounting bracket (101) has a slot, in which a bearing (105) is embedded. The bearing (105) is locked by a locking bolt (106) screwed into the slot. An mounting shaft is fixedly installed on the inner ring of the bearing (105), and the paper roll a (104) is installed on the mounting shaft.

9. The photovoltaic cell screen roll tabletop paper replacement device according to claim 2, characterized in that: A material tank (20793) for storing glue is placed under the table (100), and the pump body on the material tank (20793) is connected to the guide pipe (2072) through a connecting pipe.

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