Preparation method of drip irrigation tape

Abstract

The invention provides a preparation method of a drip irrigation tape, which comprises the following steps: adding a target amount of benzophenone into a fluorine-containing acrylate copolymer solution, and uniformly mixing to obtain a fluorine-containing acrylate copolymer coating emulsion; enabling the drip irrigation tape pipe blank to enter a spraying mechanism, and automatically and uniformly spraying the coating emulsion on the outer surface of the drip irrigation tape pipe blank through the spraying mechanism; a punching mechanism is used for punching the sprayed drip irrigation tape pipe blank, so that drip irrigation holes are formed in the surface of the drip irrigation tape pipe blank; after spraying and punching are completed, the drip irrigation belt pipe blank enters the radiation mechanism, after an ultraviolet lamp tube is controlled to work for a certain time, modified hollow glass beads are sprayed to the outer surface of the drip irrigation belt pipe blank at the same time, by arranging the spraying mechanism, coating emulsion is automatically and evenly sprayed to the outer surface of the drip irrigation belt pipe blank, time and labor are saved, and the production efficiency is improved. The spraying efficiency is improved, and meanwhile the uniformity of the coating emulsion sprayed on the outer surface of the drip irrigation tape pipe blank is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drip irrigation tape manufacturing, and specifically relates to a preparation method of a drip irrigation tape. Background Art

[0002] With people's awareness of water conservation, drip irrigation technology has been widely applied. Subsurface drip irrigation technology is a new type of irrigation technology that combines film covering technology and drip irrigation technology, and is also an extension and deepening of plastic film cultivation technology. Some problems have emerged during the use of subsurface drip irrigation technology. Among them, the easy burning of ordinary subsurface drip irrigation tapes is the most prominent problem. Because under sunlight irradiation, water droplets condense under the film of the subsurface drip irrigation tape, and the "convex lens effect" formed by the water droplets causes burns to the drip irrigation tape. This phenomenon is manifested as charred melting holes on the surface of the drip irrigation tape, resulting in water leakage, thus seriously affecting the operation and quality of the subsurface drip irrigation system; therefore, a coating with high temperature resistance and sunburn resistance needs to be coated on the drip irrigation tape. If the coating is applied manually, it is not only time-consuming and laborious, affecting the production efficiency of the drip irrigation tape, but also easily affects the performance of the drip irrigation tape in terms of high temperature resistance and sunburn resistance due to uneven coating. Summary of the Invention

[0003] The present invention provides a preparation method of a drip irrigation tape to solve the above-mentioned technical problem that applying the coating manually is not only time-consuming and laborious, affecting the production efficiency of the drip irrigation tape, but also easily affects the performance of the drip irrigation tape in terms of high temperature resistance and sunburn resistance due to uneven coating.

[0004] To solve the above technical problem, the present invention discloses a preparation method of a drip irrigation tape, including the following steps:

[0005] Step 1: Add a target amount of benzophenone to the fluoroacrylate copolymer solution, and after mixing evenly, obtain a fluoroacrylate copolymer coating emulsion;

[0006] Step 2: Make the drip irrigation tape tube blank enter the spraying mechanism, and automatically spray the coating emulsion evenly on the outer surface of the drip irrigation tape tube blank through the spraying mechanism;

[0007] Step 3: Use a punching mechanism to punch holes in the sprayed drip irrigation tape tube blank to form drip irrigation holes on its surface;

[0008] Step 4: After the sprayed and punched drip irrigation tape tube blank enters the radiation mechanism, control the ultraviolet lamp tube to work for a certain period of time, and at the same time spray modified hollow glass microspheres onto the outer surface of the drip irrigation tape tube blank.

[0009] Preferably, the method for preparing the fluorinated acrylate copolymer solution is as follows: octadecyl acrylate and 2-hydroxyethyl acrylate in a target amount are subjected to a polymerization reaction at a temperature of 60-65 °C to obtain an acrylate copolymer intermediate A with a large number of hydroxyl groups on the side chain. Then, a 1,6-hexamethylene diisocyanate solution is slowly added dropwise to the intermediate A while stirring. After the reaction, an acrylate copolymer intermediate B with a large number of isocyanate groups on the side chain is obtained. Then, a target amount of fluorinated alcohol is added to the intermediate B. After the reaction, an acrylate copolymer intermediate C with a large number of fluorocarbon chains on the side chain is obtained. Finally, a target amount of ethanol with a mass concentration of 80%-85% is added to the intermediate C for a capping reaction to obtain the fluorinated acrylate copolymer solution.

[0010] Preferably, the method for preparing the modified hollow glass microspheres is as follows: 5 g - 8 g of silane coupling agent KH-550 and 30 mL of absolute ethanol are formulated into a solution. After stirring until the solution is clear, the solution is slowly added dropwise into the hollow glass microspheres. Through strong stirring, the solution fully infiltrates the hollow glass microspheres. Then, the fully infiltrated hollow glass microspheres are placed in a water bath at 80 °C - 85 °C and reacted for 1.5 hours to obtain a reaction product. After the reaction product is cooled to room temperature, it is filtered and washed to obtain the modified hollow glass microspheres.

[0011] Preferably, the target volume ratio of octadecyl acrylate to 2-hydroxyethyl acrylate is 1-2:2-4, the target volume ratio of intermediate A to 1,6-hexamethylene diisocyanate solution is 3-6:3-4, the target volume ratio of intermediate B to fluorinated alcohol is 6-10:3.6-4, and the target volume ratio of intermediate C to ethanol with a mass concentration of 80%-85% is 9.6-14:0.2-0.4.

[0012] Preferably, the hollow glass microspheres are D-1210 type hollow glass microspheres with a diameter of 5 microns - 300 microns.

[0013] Preferably, the punching mechanism includes a mounting block. The mounting block is provided with a plurality of spiked nails at equal intervals in the front-rear direction. The spiked nails are slidably connected to the mounting block, and one end of the spiked nail far from the tip is rotatably connected to a first guide ball. A first spring is fixedly arranged between the first guide ball and the mounting block. The first spring is sleeved on the spiked nail. The first guide ball is in corresponding contact with a guide block. The guide block is arranged in a first conveying port. A plurality of guide blocks are circumferentially and evenly arranged in the first conveying port. The first conveying port penetrates through the front and rear ends of a first mounting sleeve. The first mounting sleeve is rotatably arranged in a first support block. The mounting block is fixedly connected to a second mounting sleeve. The mounting block is arranged in the first conveying port. The second mounting sleeve is rotatably arranged in a second support block. The first conveying port is for the drip irrigation tape tube blank to pass through.

[0014] Preferably, the spraying mechanism includes a pressure chamber inside the mounting block. A push plate is slidably arranged in the pressure chamber. The push plate is fixedly connected to a push rod. The push rod penetrates through the side end of the pressure chamber and is rotatably connected to a second guiding ball. The second guiding ball is in corresponding contact with a guiding block. A second spring is fixedly arranged between the second guiding ball and the mounting block. The second spring is sleeved on the push rod. A plurality of spray heads are evenly arranged at intervals in the front-rear direction at one end of the mounting block away from the second guiding ball. The spray heads are communicated with the pressure chamber. The pressure chamber is communicated with the liquid storage chamber through a liquid delivery channel and an arc-shaped channel. The liquid storage chamber is arranged at one end of the liquid delivery shell away from the second mounting sleeve. The arc-shaped channel is arranged at one end of the liquid delivery shell close to the second mounting sleeve. The liquid delivery channel is eccentrically arranged on the second mounting sleeve. The front and rear ends of the middle part of the liquid delivery shell are penetrated with a third delivery port through which the drip irrigation tape tube blank passes. The liquid delivery shell is fixedly connected to the second support block through a first fixing block.

[0015] Preferably, the radiation mechanism includes a second delivery port penetrating through the front and rear ends of the middle part of the second mounting sleeve. A plurality of ultraviolet lamp tubes and nozzles are evenly arranged in the circumferential direction of the second delivery port. The ultraviolet lamp tubes and the nozzles are arranged at intervals. The nozzles are used for spraying modified hollow glass microspheres. The second delivery port is for the drip irrigation tape tube blank to pass through.

[0016] Preferably, it further includes a conveying mechanism. The conveying mechanism includes a base. Symmetrically arranged on the front and rear sides of the upper end of the base are second fixing blocks. The second fixing blocks are rotatably connected to winding rollers through a first connecting shaft. Drip irrigation tapes are wound on the winding rollers on the front and rear sides, and the rotation directions of the winding rollers on the front and rear sides are the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0018] Figure 1 is the process flow chart of the present invention;

[0019] Figure 2 is the structural schematic diagram of the drip irrigation tape of the present invention;

[0020] Figure 3 is the structural schematic diagram of the spraying mechanism, punching mechanism and radiation mechanism of the present invention;

[0021] Figure 4 is Figure 3 the enlarged structural schematic diagram of area A in

[0022] Figure 5 is the structural schematic diagram of the third support block of the present invention;

[0023] Figure 6 is the side view structural schematic diagram of the first mounting sleeve and the mounting block of the present invention.

[0024] In the figure: 1. Tube blank of drip irrigation tape; 101. Drip irrigation holes; 2. Base; 3. Rewinding roller; 4. Support block three; 5. Spring rod; 6. Sliding cavity; 7. Electric telescopic cylinder; 8. Mounting seat; 9. Guide roller; 10. Sliding block; 11. Connecting shaft three; 12. Pulley two; 13. Conveyor belt; 14. Pulley one; 15. Driving wheel; 16. Driving disc; 17. Bevel gear one; 18. Bevel gear two; 19. Rotating shaft two; 20. Gear one; 21. Gear two; 22. Mounting sleeve one; 23. Feeding port one; 24. Support block one; 25. Mounting sleeve two; 26. Gear five; 27. Gear four; 28. Gear three; 29. Gear six; 30. Gear seven; 31. Threaded rod; 32. Threaded sleeve; 33. Driving shaft; 34. Support block two; 35. Liquid delivery shell; 36. Liquid storage cavity; 37. Liquid pushing plate; 38. L-shaped sliding plate; 39. Arc-shaped channel; 40. Liquid delivery channel; 41. Feeding port two; 42. Mounting block; 43. Spiked nail; 44. Pushing rod; 45. Guide ball one; 46. Pushing plate; 47. Pressure cavity; 48. Spray head; 49. Ultraviolet lamp tube; 50. Guide block. Detailed implementation manners

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0026] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] The present invention provides the following embodiments

[0028] Embodiment 1

[0029] An embodiment of the present invention provides a preparation method of a drip irrigation tape, as Figure 1 - Figure 2 shown, including the following steps:

[0030] Step 1: Add a target amount of benzophenone to the fluorinated acrylate copolymer solution, and mix evenly to obtain a fluorinated acrylate copolymer coating emulsion;

[0031] Step 2: Feed the drip irrigation tape tube blank 1 into the spraying mechanism, and the spraying mechanism automatically sprays the coating emulsion obtained in Step 1 evenly on the outer surface of the drip irrigation tape tube blank 1;

[0032] Step 3: Use the punching mechanism to punch the sprayed drip irrigation tape tube blank 1 to form drip holes 101 on its surface;

[0033] Step 4: After the sprayed and punched drip irrigation tape tube blank 1 enters the radiation mechanism, after controlling the ultraviolet lamp tube 49 to work for a certain period of time, modified hollow glass microspheres are sprayed onto the outer surface of the drip irrigation tape tube blank 1.

[0034] The beneficial effects of the above technical solution are as follows:

[0035] In Step 4, hollow glass microspheres with good solar heat reflection performance are used, which have good high-temperature resistance and anti-solar burning performance. When the ultraviolet lamp tube 49 works, through the radiation of ultraviolet light, the fluorinated acrylate copolymer forms covalent bonds with the molecules on the surface of the drip irrigation tape and the coating material through cross-linking reaction to achieve the effect of firm coating. By setting the spraying mechanism, the coating emulsion is automatically sprayed evenly on the outer surface of the drip irrigation tape tube blank 1, saving time and effort, improving the spraying efficiency and at the same time improving the uniformity of the coating emulsion sprayed on the outer surface of the drip irrigation tape tube blank 1, solving the technical problems that using the manual coating method to coat the coating is not only time-consuming and laborious, affecting the production efficiency of the drip irrigation tape, but also easily affecting the high-temperature resistance and anti-solar burning performance of the drip irrigation tape due to uneven coating.

[0036] Example 2

[0037] On the basis of Example 1, as Figure 1 - Figure 2 shown, the preparation method of the fluorinated acrylate copolymer solution is that the target amount of octadecyl acrylate and 2-hydroxyethyl acrylate are polymerized at a temperature of 60 - 65 °C to obtain the acrylate copolymer intermediate A with a large number of hydroxyl groups on the side chain, and then 1,6-hexamethylene diisocyanate solution is slowly added dropwise to the intermediate A while stirring. After the reaction, the acrylate copolymer intermediate B with a large number of isocyanate groups on the side chain is obtained. Then, the target amount of fluorinated alcohol is added to the intermediate B, and after the reaction, the acrylate copolymer intermediate C with a large number of carbon-fluorine chains on the side chain is obtained. Finally, the target amount of ethanol with a mass concentration of 80% - 85% is added to the intermediate C for end-capping reaction to obtain the fluorinated acrylate copolymer solution;

[0038] The method for preparing modified hollow glass microspheres is to prepare a solution by mixing 5 g - 8 g of silane coupling agent KH-550 with 30 mL of absolute ethanol, and after stirring until the solution becomes clear, slowly drip this solution into the hollow glass microspheres. Through strong stirring, the solution fully infiltrates the hollow glass microspheres. Then, put the fully infiltrated hollow glass microspheres into a water bath at 80 °C - 85 °C and react for 1.5 hours to obtain a reaction product. After the reaction product is cooled to room temperature, it is filtered and washed to obtain the modified hollow glass microspheres;

[0039] The target volume ratio of octadecyl acrylate to 2-hydroxyethyl acrylate is 1 - 2:2 - 4, the target volume ratio of intermediate A to 1,6 - hexamethylene diisocyanate solution is 3 - 6:3 - 4, the target volume ratio of intermediate B to fluorinated alcohol is 6 - 10:3.6 - 4, and the target volume ratio of intermediate C to ethanol with a mass concentration of 80% - 85% is 9.6 - 14:0.2 - 0.4;

[0040] The hollow glass microspheres are D-1210 type hollow glass microspheres with a diameter of 5 microns - 300 microns.

[0041] The beneficial effects of the above technical solution are:

[0042] Referring to CN201310663834 - A high-temperature resistant and anti-burning drip irrigation tape coating under film and its preparation method, the fluorinated acrylate copolymer selects a green and environmentally friendly fluorocarbon compound with a short fluorocarbon chain (Rf ≤ 6), which can be naturally degraded and will not decompose into toxic perfluorooctanoic acid and perfluorooctane sulfonic acid, causing environmental pollution, bioaccumulation and harm. The coating material of this application forms a firm coating by grafting the coating material onto the surface of the polymer material through covalent bonds.

[0043] Example 3

[0044] On the basis of Example 1, as Figure 2 - Figure 6 shown, the punching mechanism includes a mounting block 42. The mounting block 42 is evenly provided with a number of spike nails 43 at intervals in the front-rear direction. The spike nails 43 are slidably connected to the mounting block 42, and one end of the spike nail 43 far from the tip is rotatably connected to a first guiding ball 45. A first spring is fixedly arranged between the first guiding ball 45 and the mounting block 42. The first spring is sleeved on the spike nail 43. The first guiding ball 45 is in corresponding contact with a guiding block 50. The guiding block 50 is arranged in a first conveying port 23, and a number of guiding blocks 50 are evenly arranged circumferentially in the first conveying port 23. The first conveying port 23 runs through the front and rear ends of a first mounting sleeve 22. The first mounting sleeve 22 is rotatably arranged in a first supporting block 24. The mounting block 42 is fixedly connected to a second mounting sleeve 25. The mounting block 42 is arranged in the first conveying port 23. The second mounting sleeve 25 is rotatably arranged in a second supporting block 34. The first conveying port 23 allows the drip irrigation tape tube blank 1 to pass through.

[0045] The beneficial effects of the above technical solution are:

[0046] The drip irrigation tape tube blank 1 moves intermittently in the front-rear direction. When the drip irrigation tape tube blank 1 passes through the first conveying port 23, during the punching of the drip irrigation tape tube blank 1, the first mounting sleeve 22 rotates, so that the arc-shaped long end of the guide block 50 contacts along the first guide ball 45. At this time, the mounting block 42 remains stationary, pushing the first guide ball 45 to move towards the drip irrigation tape tube blank 1. The first guide ball 45 drives the tip of the thumbtack 43 to move towards the drip irrigation tape tube blank 1, punching it to form drip irrigation holes 101, and the first spring is compressed. After the arc-shaped long end of the guide block 50 disengages from the first guide ball 45, under the elastic action of the first spring, the thumbtack 43 returns to its original position, and the mounting block 42 starts to rotate to perform the work of coating the coating emulsion. The mounting block 42 rotates intermittently. When the mounting block 42 rotates, it can drive the connected thumbtack 43 to move circumferentially along the drip irrigation tape tube blank 1, punching different positions on the circumferential side end of the drip irrigation tape tube blank 1. A number of thumbtacks 43 are arranged at equal intervals in the front-rear direction on the mounting block 42. The length of the holes punched in the drip irrigation tape tube blank 1 by the number of thumbtacks 43 is the same as the moving distance of the drip irrigation tape tube blank 1 each time.

[0047] Example 4

[0048] On the basis of Example 3, as Figure 2 - Figure 6 shown, the spraying mechanism includes a pressure chamber 47 inside the mounting block 42. A push plate 46 is slidably arranged in the pressure chamber 47. The push plate 46 is fixedly connected to a push rod 44. The push rod 44 penetrates through the side end of the pressure chamber 47 and is rotatably connected to the second guide ball. The second guide ball corresponds to and contacts the guide block 50. A second spring is fixedly arranged between the second guide ball and the mounting block 42. The second spring is sleeved on the push rod 44. A number of spray heads 48 are arranged at equal intervals in the front-rear direction at one end of the mounting block 42 away from the second guide ball. The spray heads 48 communicate with the pressure chamber 47. The pressure chamber 47 communicates with the liquid storage chamber 36 through a liquid delivery channel 40 and an arc-shaped channel 39. The liquid storage chamber 36 is arranged at one end of the liquid delivery shell 35 away from the second mounting sleeve 25. The arc-shaped channel 39 is arranged at one end of the liquid delivery shell 35 close to the second mounting sleeve 25. The liquid delivery channel 40 is eccentrically arranged on the second mounting sleeve 25. A third conveying port is penetrated through the front and rear ends of the middle part of the liquid delivery shell 35. The third conveying port allows the drip irrigation tape tube blank 1 to pass through. The liquid delivery shell 35 is fixedly connected to the second support block 34 through a first fixing block.

[0049] The beneficial effects of the above technical solutions are:

[0050] When the second installation sleeve 25 drives the installation block 42 to rotate in the reverse direction and drives the second guiding ball to come into corresponding contact with the long arc end of the guiding block 50, the first installation sleeve 22 remains stationary. The second guiding ball will drive the push rod 44 to move towards the pressure chamber 47, compressing the second spring. The push rod 44 drives the push plate 46 to slide along the pressure chamber 47. The push plate 46 gradually sprays the coating emulsion in the pressure chamber 47 onto the drip irrigation tape tube blank 1 through the spray head 48, spraying the coating emulsion on the circumferential side of the drip irrigation tape tube blank 1. When the second guiding ball disengages from the long arc end of the guiding block 50, under the elastic action of the second spring, the push plate 46 returns to its original position. The coating emulsion in the liquid storage chamber 36 is fed into the pressure chamber 47 through the arc-shaped channel 39 and the liquid supply channel 40 for liquid replenishment. At the same time, the first installation sleeve 22 rotates to perform the hole punching work. The setting of the arc-shaped channel 39 ensures that the liquid supply housing 35 is integral, and the arc-shaped channel 39 is always connected to the liquid supply channel 40 when the second installation sleeve 25 rotates. Thus, it can ensure that the spray head 48 sprays the coating emulsion onto the drip irrigation tape tube blank 1 as the installation block 42 rotates. A number of spray heads 48 are evenly arranged at intervals in the front-back direction. The spraying length of the drip irrigation tape tube blank 1 in the front-back direction by the number of spray heads 48 is the same as the moving distance of the drip irrigation tape tube blank 1 each time.

[0051] Embodiment 5

[0052] On the basis of Embodiment 3, as Figure 2 - Figure 6 shown, the radiation mechanism includes two conveying ports 41 penetrating through the front and rear ends of the middle part of the second installation sleeve 25. A number of ultraviolet lamp tubes 49 and nozzles are circumferentially and evenly arranged in the conveying ports 41. The ultraviolet lamp tubes 49 and the nozzles are arranged at intervals. The nozzles are used for spraying modified hollow glass microspheres. The drip irrigation tape tube blank 1 passes through the conveying ports 41;

[0053] It further includes a conveying mechanism. The conveying mechanism includes a base 2. On the upper end of the base 2, fixing blocks two are symmetrically arranged on the front and rear sides. The fixing blocks two are rotationally connected to the winding rollers 3 through the first connecting shafts. Drip irrigation tapes are wound around the winding rollers 3 on the front and rear sides, and the rotation directions of the winding rollers 3 on the front and rear sides are the same. A first support block 24 and a second support block 34 are arranged in the middle of the upper end of the base 2.

[0054] The beneficial effects of the above technical solutions are:

[0055] When the drip irrigation tape tube blank 1 passes through the second conveying port 41, several ultraviolet lamp tubes 49 irradiate the sprayed drip irrigation tape tube blank 1. The rotation of the second mounting sleeve 25 can perform circumferential irradiation on the drip irrigation tape tube blank 1 and spray modified hollow glass microspheres. The nozzle and its spraying principle both adopt the prior art and will not be elaborated in the present invention. The front take-up roller 3 is used to unwind the drip irrigation tape tube blank 1, and the rear take-up roller 3 is used to wind up the drip irrigation tape tube blank 1 after punching and spraying. The first mounting sleeve 22, the second mounting sleeve 25 and the liquid delivery shell 35 are arranged between the front and rear take-up rollers 3. The front and rear take-up rollers 3 rotate synchronously, which can drive the drip irrigation tape tube blank 1 to automatically pass through the first conveying port 23, the second conveying port 41 and the third conveying port, and perform the work of punching and coating the coating, saving time and effort.

[0056] Example 6

[0057] On the basis of Example 5, as Figure 2 - Figure 6 shown, a driving disk 16 is rotatably arranged at the front end of the base 2. The driving disk 16 is fixedly connected with the motor, and the motor is fixedly connected with the base 2. The driving shaft 33 is eccentrically distributed at 90 degrees at the front end of the driving disk 16. Driving wheels 15 are correspondingly arranged on the front and rear sides of the driving disk 16. The driving shaft 33 is correspondingly matched with the guiding grooves evenly distributed in the circumferential direction on the driving wheel 15. The rear driving wheel 15 is fixedly connected with the first belt pulley 14 through the second connecting shaft. The first belt pulley 14 is connected with the second belt pulley 12 through the conveyor belt 13. The second belt pulley 12 is fixedly connected with the rear take-up roller 3 through the third connecting shaft 11. The front driving wheel 15 is fixedly connected with the first bevel gear 17 through the first rotating shaft. The first bevel gear 17 meshes with the second bevel gear 18. The second bevel gear 18 is fixedly connected with the second rotating shaft 19. The second rotating shaft 19 is fixedly connected with the first gear 20, the third gear 28 and the sixth gear 29. The first gear 20 meshes with the second gear 21. The second gear 21 is sleeved outside the first mounting sleeve 22. The sixth gear 29 meshes with the seventh gear 30. The seventh gear 30 is fixedly connected with the cylindrical section of the threaded rod 31. The threaded rod 31 is in threaded connection with the threaded sleeve 32. The threaded sleeve 32 is fixedly connected with the L-shaped sliding plate 38. The vertical section of the L-shaped sliding plate 38 is slidably connected with the upper end of the base 2. The horizontal section of the L-shaped sliding plate 38 is fixedly connected with the liquid pushing plate 37. The liquid pushing plate 37 is slidably arranged in the liquid storage cavity 36. The third gear 28 meshes with the fourth gear 27. The fourth gear 27 meshes with the fifth gear 26. The fifth gear 26 is fixedly connected with the second mounting sleeve 25. The fourth gear 27, the threaded rod 31 and the second rotating shaft 19 are all rotatably connected with the second support block 34;

[0058] Support blocks three 4 are symmetrically arranged on the left and right sides at the front and rear ends of the base 2. Sliding cavities 6 penetrate through the left and right ends of the support blocks three 4. Sliding blocks 10 are slidably arranged in the sliding cavities 6. Spring rods 5 are fixedly arranged between the sliding blocks 10 and the sliding cavities 6. The sliding blocks 10 are fixedly connected with the electric telescopic cylinders 7. The electric telescopic cylinders 7 are fixedly connected with the mounting seats 8. The mounting seats 8 are rotatably connected with the guiding rollers 9.

[0059] The beneficial effects of the above technical solution are as follows:

[0060] The electric telescopic cylinder 7 drives the mounting seat 8 to move, and the mounting seat 8 drives the guide roller 9 to move, making a limiting contact with the drip irrigation tape tube blank 1, so that the drip irrigation tape tube blank 1 passes between the left and right distributed guide rollers 9, playing a guiding role for the drip irrigation tape tube blank 1, ensuring that when the drip irrigation tape tube blank 1 passes through the first conveying port 23, the second conveying port 41 and the third conveying port, the central axis of the drip irrigation tape tube blank 1 coincides with the central axes of the first conveying port 23, the second conveying port 41 and the third conveying port. When the motor works, it drives the driving disk 16 to rotate. The driving shaft 33 on the driving disk 16 corresponds and cooperates with the guiding groove on the driving wheel 15. The driving disk 16, the driving shaft 33, the driving wheel 15 and the guiding groove form a Geneva wheel structure. When the driving disk 16 rotates, it can drive the front and rear driving wheels 15 to rotate intermittently. That is, when the driving disk 16 rotates one circle, the front and rear driving wheels 15 rotate half a circle in turn. The rear driving wheel 15 drives the first belt pulley 14 to rotate through the second connecting shaft, the first belt pulley 14 drives the second belt pulley 12 to rotate through the conveyor belt 13, and the second belt pulley 12 drives the rear winding roller 3 to rotate through the third connecting shaft 11. The front winding roller 3 and the rear winding roller 3 can be synchronously rotated by setting a driving motor alone. After the rear winding roller 3 drives the drip irrigation tape tube blank 1 to move a certain distance, it stops rotating, and this distance is the same as the length of the drip irrigation tape tube blank 1 punctured by several thorns 43 and the spraying length of several spray heads 48 on the drip irrigation tape tube blank 1 in the front-rear direction;

[0061] After the rear driving wheel 15 stops rotating, the front driving wheel 15 starts to rotate. The front driving wheel 15 drives the first bevel gear 17 to rotate through the first rotating shaft, the first bevel gear 17 drives the second bevel gear 18 to rotate, the second bevel gear 18 drives the second rotating shaft 19 to rotate, and the second rotating shaft 19 drives the first gear 20, the third gear 28 and the sixth gear 29 to rotate. The meshing teeth of the first gear 20, the third gear 28 and the sixth gear 29 are arranged at intervals, and the distribution directions of the meshing teeth of the first gear 20 and the sixth gear 29 are the same. The meshing teeth of the third gear 28 are distributed out of phase with those of the first gear 20. That is, when the first gear 20 rotates, it drives the second gear 21 to rotate, and the second gear 21 drives the first mounting sleeve 22 to rotate. At the same time, the sixth gear 29 rotates synchronously and drives the threaded rod 31 to rotate through the seventh gear 30. The rotation of the threaded rod 31 drives the threaded sleeve 32 to move, and the threaded sleeve 32 drives the liquid pushing plate 37 to move through the L-shaped sliding plate 38. The liquid pushing plate 37 pushes the coating emulsion in the liquid storage cavity 36 into the pressure cavity 47. At this time, the third gear 28 is not meshed with the fourth gear 27 and cannot drive the fourth gear 27 to rotate. Therefore, the first mounting sleeve 22 rotates and the mounting block 42 remains stationary, performing the step of puncturing the drip irrigation tape tube blank 1 and the step of replenishing the liquid into the pressure cavity 47;

[0062] After the first gear 20 disengages from the second gear 21 and the sixth gear 29 disengages from the seventh gear 30, the third gear 28 meshes with the fourth gear 27 and drives the fourth gear 27 to rotate. The first mounting sleeve 22 remains stationary. The third gear 28 drives the fifth gear 26 to rotate in the reverse direction through the fourth gear 27. The fifth gear 26 drives the second mounting sleeve 25 to rotate in the reverse direction. The second mounting sleeve 25 drives the mounting block 42 to rotate in the reverse direction. The reverse rotation direction is counterclockwise to perform the work of spraying the coating emulsion on the drip irrigation tape tube blank 1. The distance between the second guide ball and the first guide ball 45 causes the guide block 50 to just contact the first guide ball 45 after disengaging from the second guide ball, so that the hole punching and spraying work are carried out independently without interference. Moreover, every time the front drive wheel 15 rotates half a circle, the first mounting sleeve 22 and the second mounting sleeve 25 rotate one circle. During this process, the third gear 28 first meshes with the fourth gear 27 to perform the spraying work. After the third gear 28 disengages from the fourth gear 27, then the first gear 20 meshes with the second gear 21, and the sixth gear 29 meshes with the seventh gear 30 to perform the hole punching and radiation work. In this way, the cycle repeats, and the hole punching, spraying, and radiation work can be carried out on the circumferential side of the drip irrigation tape tube blank 1. After the hole punching, spraying, and radiation work are completed on the circumferential side of the drip irrigation tape tube blank 1, when replenishing the coating emulsion in the liquid storage cavity 36, control the motor to work in the reverse direction. The setting of the arc short end of the guide block 50 ensures that the first guide ball 45 and the second guide ball do not limit the reverse rotation of the guide block 50, so that the liquid pushing plate 37 returns to its original position, and replenishment can be carried out through the liquid replenishment port at the upper end of the liquid delivery shell 35.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A preparation method of a drip irrigation tape, characterized in that: It includes the following steps: Step 1: Add a target amount of benzophenone into the fluoroacrylate copolymer solution, and after mixing evenly, obtain a fluoroacrylate copolymer coating emulsion; Step 2: Let the drip irrigation tape tube blank (1) enter the spraying mechanism, and the coating emulsion is automatically and evenly sprayed on the outer surface of the drip irrigation tape tube blank (1) through the spraying mechanism; Step 3: Use a punching mechanism to punch the sprayed drip irrigation tape tube blank (1) to form drip holes (101) on its surface; Step 4: After the drip irrigation tape tube blank (1) after spraying and punching enters the radiation mechanism, control the ultraviolet lamp tube (49) to work for a certain period of time, and at the same time spray modified hollow glass microspheres on the outer surface of the drip irrigation tape tube blank (1).

2. A method for preparing a drip irrigation tape according to claim 1, characterized in that: The preparation method of the fluoroacrylate copolymer solution is that the target amount of octadecyl acrylate and 2-hydroxyethyl acrylate are polymerized at a temperature of 60-65 °C to obtain an acrylate copolymer intermediate A with a large number of hydroxyl groups on the side chain. Then, 1,6-hexamethylene diisocyanate solution is slowly added dropwise to intermediate A, and stirred while adding dropwise. After the reaction, an acrylate copolymer intermediate B with a large number of isocyanate groups on the side chain is obtained. Then, a target amount of fluoroalcohol is added to intermediate B, and after the reaction, an acrylate copolymer intermediate C with a large number of fluorocarbon chains on the side chain is obtained. Finally, a target amount of ethanol with a mass concentration of 80%-85% is added to intermediate C for end-capping reaction to obtain the fluoroacrylate copolymer solution.

3. The preparation method of a drip irrigation tape according to claim 1, characterized in that: The preparation method of the modified hollow glass microspheres is to prepare a solution by mixing 5 g - 8 g of silane coupling agent KH-550 with 30 mL of anhydrous ethanol, and after stirring until the solution is clear, slowly drop this solution into the hollow glass microspheres. Through strong stirring, the solution fully infiltrates the hollow glass microspheres. Then, the fully infiltrated hollow glass microspheres are placed in a water bath at 80 °C - 85 °C and reacted for 1.5 hours to obtain a reaction product. After the reaction product is cooled to room temperature, it is filtered and washed to obtain the modified hollow glass microspheres.

4. A method for preparing a drip irrigation tape according to claim 2, characterized in that: The target volume ratio of octadecyl acrylate to 2-hydroxyethyl acrylate is 1-2:2-4, the target volume ratio of intermediate A to 1,6-hexamethylene diisocyanate solution is 3-6:3-4, the target volume ratio of intermediate B to fluoroalcohol is 6-10:3.6-4, and the target volume ratio of intermediate C to ethanol with a mass concentration of 80%-85% is 9.6-14:0.2-0.

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5. The preparation method of a drip irrigation tape according to claim 3, characterized in that: The hollow glass microspheres are D-1210 type hollow glass microspheres with a diameter of 5 microns - 300 microns.

6. The preparation method of a drip irrigation tape according to claim 1, characterized in that: The punching mechanism includes a mounting block (42). A number of spike nails (43) are evenly arranged at intervals in the front-back direction on the mounting block (42). The spike nails (43) are slidably connected to the mounting block (42), and one end of the spike nail (43) far from the tip is rotatably connected to a first guide ball (45). A first spring is fixedly arranged between the first guide ball (45) and the mounting block (42). The first spring is sleeved on the spike nail (43). The first guide ball (45) is in corresponding contact with a guide block (50). The guide block (50) is arranged in a first conveying port (23). A number of guide blocks (50) are evenly arranged circumferentially in the first conveying port (23). The first conveying port (23) runs through the front and back ends of a first mounting sleeve (22). The first mounting sleeve (22) is rotatably arranged in a first support block (24). The mounting block (42) is fixedly connected to a second mounting sleeve (25). The mounting block (42) is arranged in the first conveying port (23). The second mounting sleeve (25) is rotatably arranged in a second support block (34). The first conveying port (23) allows the drip irrigation tape tube blank (1) to pass through.

7. The preparation method of a drip irrigation tape according to claim 6, characterized in that: The spraying mechanism includes a pressure chamber (47) inside the mounting block (42). A push plate (46) is slidably arranged in the pressure chamber (47). The push plate (46) is fixedly connected to a push rod (44). The push rod (44) penetrates through the side end of the pressure chamber (47) and is rotatably connected to a second guide ball. The second guide ball is in corresponding contact with the guide block (50). A second spring is fixedly arranged between the second guide ball and the mounting block (42). The second spring is sleeved on the push rod (44). A number of spray heads (48) are evenly arranged at intervals in the front-back direction at one end of the mounting block (42) far from the second guide ball. The spray heads (48) are communicated with the pressure chamber (47). The pressure chamber (47) is communicated with a liquid storage chamber (36) through a liquid delivery channel (40) and an arc-shaped channel (39). The liquid storage chamber (36) is arranged at one end of a liquid delivery shell (35) far from the second mounting sleeve (25). The arc-shaped channel (39) is arranged at one end of the liquid delivery shell (35) close to the second mounting sleeve (25). The liquid delivery channel (40) is eccentrically arranged on the second mounting sleeve (25). The middle part of the front and back ends of the liquid delivery shell (35) is provided with a third conveying port. The third conveying port allows the drip irrigation tape tube blank (1) to pass through. The liquid delivery shell (35) is fixedly connected to the second support block (34) through a first fixing block.

8. The preparation method of a drip irrigation tape according to claim 6, characterized in that: The radiation mechanism includes a second conveying port (41) running through the middle part of the front and back ends of the second mounting sleeve (25). A number of ultraviolet lamp tubes (49) and nozzles are evenly arranged circumferentially in the second conveying port (41). The ultraviolet lamp tubes (49) and the nozzles are arranged at intervals. The nozzles are used for spraying modified hollow glass microspheres. The second conveying port (41) allows the drip irrigation tape tube blank (1) to pass through.

9. The preparation method of a drip irrigation tape according to claim 6, characterized in that: It further includes a conveying mechanism. The conveying mechanism includes a base (2). Fixing blocks two are symmetrically arranged on the front and back sides of the upper end of the base (2). The fixing blocks two are rotatably connected to a winding roller (3) through a first connecting shaft. Drip irrigation tapes are wound on the winding rollers (3) on the front and back sides, and the rotation directions of the winding rollers (3) on the front and back sides are the same.

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