A rolling mechanism and rolling method for producing RO membrane filter element

Abstract

The present invention discloses a winding mechanism and method for producing RO membrane filter elements. The mechanism comprises a frame, a support platform mounted on the frame, and a guide cloth feed device, an oblique feed device, an ultrasonic welding device, a gluing device, a pressing device, and a center tube positioning and winding device. The guide cloth feed device delivers the guide cloth to the support platform. The oblique feed devices are located on either side of the support platform and are moved along the material conveying direction by a screw pair. The gluing device is located above the support platform. The pressing device comprises a lifting roller assembly, an introduction assembly, a pressing assembly, and a cutting assembly. The pressing assembly is located above the ultrasonic welding device. The present invention has the following advantages and effects: This scheme utilizes a new mechanical structure, resulting in convenient and efficient winding and improved bundle quality.

Description

Technical Field

[0001] The present invention relates to the technical field of filter element processing, in particular to a rolling mechanism and a rolling method for producing RO membrane filter elements. Background Art

[0002] As people's demands for drinking water quality increase, pure water systems are gradually becoming part of every household's drinking water system. Currently, water purifiers on the market generally utilize reverse osmosis membrane filters (also known as RO membrane filters). RO filters can filter impurities such as organic matter, colloids, bacteria, and viruses from raw water, and are particularly efficient at filtering inorganic salts, heavy metals, and other impurities. Therefore, RO filters constitute the core component of water purifiers, and the filtration performance of water purifiers is directly related to the filtration performance of the RO filter.

[0003] A common RO membrane filter element includes a central tube and several layers of reverse osmosis membrane units wound on the central tube, wherein the reverse osmosis membrane unit is formed by stacking several layers of cut spacers, membranes and guide cloths.

[0004] In the prior art, reverse osmosis membrane units are usually stacked manually, their front ends are adhered to the side walls of the central tube, and then the central tube is driven to rotate by a film rolling machine to wind the reverse osmosis membrane units onto the central tube. This method is inconvenient to process and has low efficiency. Summary of the Invention

[0005] The present invention aims to provide a winding mechanism for producing RO membrane filter elements, which is convenient and efficient in winding and improves the quality of the winding. Another object of the present invention is to provide a winding method for producing RO membrane filter elements, which is efficient, convenient, and high-quality.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a winding mechanism for producing RO membrane filter elements, comprising a frame, a support platform provided on the frame, the frame further provided with a guide cloth feeding device, an oblique feeding device, an ultrasonic welding device, a gluing device, a pressing device, and a center tube positioning and winding device, the guide cloth feeding device conveying the guide cloth to the support platform, the oblique feeding devices being located on both sides of the support platform, and the oblique feeding devices being moved along the material conveying direction by a screw pair, and the gluing device being arranged above the support platform;

[0007] The pressing device includes a lifting roller assembly, an introduction assembly, a material pressing assembly and a cutting assembly. The material pressing assembly is correspondingly arranged above the ultrasonic welding device.

[0008] The center tube positioning and winding device is used to clamp the center tube and move the center tube to the ultrasonic welding device;

[0009] The ultrasonic welding device is used to weld the guide cloth to the outer wall of the central tube;

[0010] The oblique insertion feeding device is used to obliquely insert the reverse osmosis membrane unit between the guide cloth and the central tube.

[0011] By adopting the above technical solution, during the RO membrane filter element bundling process, the center tube is installed on the center tube positioning and winding device, and then the center tube is moved above the ultrasonic welding device, and the guide cloth feeding device sends the front end of the guide cloth roll to the bottom of the center tube, and the pressing component and the ultrasonic welding device are pressed and matched to weld the front part of the guide cloth to the side wall of the center tube; then, the oblique insertion feeding device grabs the reverse osmosis membrane unit and moves it to the center tube, and inserts it into the angle between the center tube and the guide cloth at a certain angle. The reverse osmosis membrane unit and the guide cloth are superimposed, and the introduction component can be used for the reverse osmosis membrane unit. The element plays a guiding role when being inserted; the pressure roller assembly presses down on the reverse osmosis membrane unit, and the gluing device applies glue on the upper surface of the reverse osmosis membrane unit. The pressure roller assembly presses the reverse osmosis membrane unit tightly on the support platform to play a positioning role, preventing the reverse osmosis membrane unit from being displaced during the gluing process; then the central tube positioning winding device drives the central tube to rotate, and the reverse osmosis membrane unit can be wound around the central tube through the guide cloth to form a filter element roll. When the central tube positioning winding device drives the filter element roll away from the pressing device, the cutting assembly cuts the guide cloth connected to the filter element roll, so that the filter element roll is separated from the guide cloth roll. In this way, compared with the prior art of manually feeding the film rolling machine, the oblique insertion feeding device can realize automatic feeding to the central tube, which has the effects of convenient winding, high efficiency, and improved roll quality.

[0012] The present invention is further configured as follows: the oblique feeding device includes a mounting frame, a vertical cylinder and a horizontal cylinder arranged on the mounting frame, the piston rod of the horizontal cylinder is fixedly connected to a mounting block, the mounting block is rotatably connected to a rotating block, an arc groove is provided on the rotating block, and a limiting column that slides with the arc groove is provided on the mounting block; the mounting block is hinged with a driving cylinder, the piston rod of the driving cylinder is rotatably connected to the rotating block, and the driving cylinder drives the rotating block to rotate relative to the mounting block; a clamping claw assembly is provided on the rotating block.

[0013] By adopting the above technical solution, when the clamping claw assembly is clamped on the reverse osmosis membrane unit and is inserted obliquely between the central tube and the guide cloth, the driving cylinder is started to drive the rotating block to rotate relative to the mounting block. In this way, the rotating block can drive the clamping claw assembly to rotate relative to the mounting frame after rotation, and the clamping claw assembly can drive the reverse osmosis membrane unit to be inserted between the central tube and the guide cloth at a certain oblique angle. During the insertion process, the movement of the clamping claw assembly can be adjusted by the vertical cylinder, the horizontal cylinder and the screw pair, and the reverse osmosis membrane unit is inserted obliquely. A clamping force can be generated on the reverse osmosis membrane unit between the side wall of the central tube and the guide cloth, which can prevent the reverse osmosis membrane unit from slipping during the rolling process.

[0014] The present invention is further configured as follows: the clamping jaw assembly includes an ascending cylinder and a descending cylinder fixed to the rotating block, a first clamping block is provided on the piston rod of the ascending cylinder, and a second clamping block is correspondingly provided on the piston rod of the descending cylinder, and the first clamping block and the second clamping block are clamped together.

[0015] By adopting the above technical solution, the upward cylinder drives the first clamping block to move, and the downward cylinder drives the second clamping block to move. When the first clamping block and the second clamping block move toward each other, they can clamp, and when the two move away from each other, they can release.

[0016] The present invention is further configured as follows: the ultrasonic welding device includes a support frame, a lifting cylinder arranged on the support frame, and an ultrasonic welding head, the ultrasonic welding head is fixedly connected to the piston rod of the lifting cylinder, and the lifting cylinder drives the ultrasonic welding head to rise and fall relative to the support frame.

[0017] By adopting the above technical solution, when welding, the lifting cylinder drives the ultrasonic welding head to move upward, so that the ultrasonic welding head pushes the guide cloth to the top and welds it to the wall of the central tube. After welding is completed, the lifting cylinder drives the ultrasonic welding head away from the central tube.

[0018] The present invention is further configured as follows: the pressure roller assembly includes a first cylinder and a lower pressure roller, a first fixed frame is provided on the piston rod of the first cylinder, and the lower pressure roller is rotatably connected to the first fixed frame; the introduction assembly includes a second cylinder and a material guide member, the material guide member is fixedly connected to the piston rod of the second cylinder through the second fixed frame, the material guide member includes a plurality of material guide strips arranged in sequence along the horizontal direction, the material guide strip includes an integrally formed vertical section and an inclined section located at the bottom of the vertical section, the vertical section and the inclined section form an acute angle, and the inclined section is arranged on a side close to the pressure roller assembly.

[0019] By adopting the above technical solution, the second cylinder drives the material guide member to press down, and a certain gap is left between the bottom end of the material guide member and the supporting platform for the insertion of the reverse osmosis membrane unit. When the reverse osmosis membrane unit is inserted between the central tube and the guide cloth, the reverse osmosis membrane unit moves into the angle between the central tube and the guide cloth under the guidance of the inclined section, so that the reverse osmosis membrane unit can be accurately inserted; after insertion, the first cylinder drives the pressing roller to press down on the reverse osmosis membrane unit, so that the reverse osmosis membrane unit can be pressed and positioned, which facilitates the gluing process.

[0020] The present invention is further configured as follows: the pressing assembly includes a third cylinder and a pressing block, the pressing block is fixedly connected to the piston rod of the third cylinder through a third fixing frame, and a V-shaped groove is provided on the bottom surface of the pressing block.

[0021] By adopting the above technical solution, during ultrasonic welding, the ultrasonic welding device is lifted up, the third cylinder drives the pressing block to move downward, and the upper surface of the center tube is embedded in the V-shaped groove. In this way, during the ultrasonic welding process, the V-shaped groove can prevent the center tube from rotating to a certain extent, making the welding position more precise and the welding effect more solid.

[0022] The present invention is further configured as follows: the cutting assembly includes a fourth cylinder, a rodless cylinder and a cutter arranged on the rodless cylinder, the rodless cylinder is fixedly connected to the piston rod of the fourth cylinder through a fourth fixing frame, the rodless cylinder drives the cutter to move along the axis direction of the central tube, and blades are provided on both sides of the cutter.

[0023] By adopting the above technical solution, when the guide cloth is cut from the filter element roll, the fourth cylinder drives the fourth fixed frame to press down, and the rodless cylinder drives the cutter to move along the width direction of the guide cloth roll to cut the guide cloth roll. Since there are blades on both sides of the cutter, the cutter does not need to be reset after a single cut.

[0024] The present invention is further configured as follows: the central tube positioning and winding device includes a mounting seat, a winding assembly is provided on the mounting seat, and the winding assembly includes a winding motor, a plug-in column, a tightening cylinder and an abutment column; the plug-in column is fixedly connected to the output shaft of the winding motor, the tightening cylinder is fixedly installed on the mounting seat, a sliding block is slidingly provided on the mounting seat, the abutment column is rotatably connected to the sliding block through a bearing, and the tightening cylinder drives the abutment column to move closer to or away from the plug-in column through the sliding block, and the plug-in column and the abutment column are coaxially arranged.

[0025] By adopting the above technical solution, one end of the center tube is plugged into the plug-in column, and the tightening cylinder drives the sliding block to move toward the plug-in column, so that the abutment column abuts against the other end of the center tube. When winding, the winding motor can drive the center tube to rotate through the plug-in column.

[0026] The present invention is further configured as follows: a jacking core assembly is also provided on the mounting seat, the jacking core assembly includes a jacking force cylinder and a jacking roller, the jacking force cylinder is fixedly installed on the mounting seat, the piston rod of the jacking force cylinder is provided with a fixed seat, the jacking roller is rotatably connected to the fixed seat, the central axis of the jacking roller is parallel to the central axis of the plug-in column, and the jacking force cylinder is connected to a pressure regulating valve.

[0027] By adopting the above technical solution, during the winding process, the top force cylinder drives the top roller to stick closely to the outer wall of the roll, so that the reverse osmosis membrane unit is not easy to loosen during the winding process. In addition, as the roll diameter increases during the winding process, the top force cylinder can be controlled by the pressure regulating valve, thereby controlling the tightening force of the top roller on the filter element roll, thereby improving the roll quality.

[0028] Another technical object of the present invention is achieved by the following technical solution: a method for rolling an RO membrane filter element, comprising the following steps:

[0029] S1. Center tube loading: The center tube is fixedly installed on the center tube positioning and winding device, and is positioned above the ultrasonic welding device;

[0030] S2. Guide cloth welding: The guide cloth feeding device feeds the front end of the guide cloth roll toward the central tube. The ultrasonic welding device cooperates with the pressing assembly to press the guide cloth toward the outer wall of the central tube. The front end of the guide cloth is welded and fixed to the outer wall of the central tube.

[0031] S3, guide cloth winding: the center tube positioning winding device drives the guide cloth to be wound around the outer wall of the center tube, and the number of winding turns is 3 to 10 turns;

[0032] S4. Winding the reverse osmosis membrane unit: The oblique insertion feeding device clamps the stacked reverse osmosis membrane units and inserts the reverse osmosis membrane units at an angle of 20° to 50° into the angle between the central tube and the guide cloth, so that the reverse osmosis membrane units and the guide cloth are stacked; during the insertion process, the guide assembly guides the reverse osmosis membrane units;

[0033] S5. Gluing: The pressure roller assembly presses down to press the reverse osmosis membrane onto the support platform, and the glue coating device applies glue along the periphery of the upper surface of the reverse osmosis membrane unit;

[0034] S6. Winding into bundles: The central tube positioning and winding device drives the central tube to rotate. When the central tube drives the guide cloth to wind, it can drive the reverse osmosis membrane unit on it to wind synchronously around the central tube to form a filter element roll;

[0035] S7, cutting and separating: the cutting component cuts the guide cloth connected to the filter element roll, so that the filter element roll is separated from the guide cloth.

[0036] By adopting this technical solution, in S3, the guide cloth welded to the central tube is wrapped several times around the outer wall of the central tube. The weld is then compressed by the wound guide cloth, preventing the guide cloth from separating from the weld at the central tube, ensuring a stronger weld. In S4, an induction assembly is used to guide the reverse osmosis membrane, making the insertion process more accurate and rapid, thereby improving plug-in efficiency. This bundling method is highly efficient, convenient, and high-quality.

[0037] In summary, the present invention has the following beneficial effects:

[0038] 1. The reverse osmosis membrane unit is inserted obliquely into the angle between the central tube and the guide cloth by using an oblique insertion feeding device. The reverse osmosis membrane unit and the guide cloth are stacked, making it easier to wind the reverse osmosis membrane unit onto the central tube through the guide cloth. Compared with the existing technology of manually feeding the membrane to the film winding machine, the oblique insertion feeding device can realize automatic feeding to the central tube, which is convenient and efficient in winding and improves the quality of the bundle.

[0039] 2. The reverse osmosis membrane unit is inserted obliquely, and a clamping force is generated between the side wall of the central tube and the guide cloth to prevent the reverse osmosis membrane unit from slipping off during the bundling process;

[0040] 3. The V-shaped groove of the pressing block is used to position the center tube, making the welding position more accurate and the welding effect more solid;

[0041] 4. The top roller is driven by a top force cylinder to stick to the outer wall of the filter element roll, so that the reverse osmosis membrane unit is not easy to loosen during the winding process, thereby improving the roll quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structural relationship of the embodiment.

[0043] Figure 2 Schematic diagram of the positional relationship between the guide cloth feeding device and the transfer device of the embodiment.

[0044] Figure 3 Schematic diagram of the positional relationship among the ultrasonic welding device, the pressing device and the center tube positioning and winding device of the embodiment.

[0045] Figure 4 Schematic diagram of the structural relationship of the oblique feeding device in the embodiment.

[0046] Figure 5 2 is a schematic diagram of the structural relationship of the oblique feeding device from another perspective in the embodiment.

[0047] Figure 6 It is a schematic diagram of the structural relationship of the oblique feeding device in the embodiment in which some structures are in a separated state.

[0048] Figure 7 Schematic diagram of the structural relationship between the ultrasonic welding device and the central tube positioning and winding device in the embodiment.

[0049] Figure 8 Schematic diagram of the structural relationship of the pressing device in the embodiment.

[0050] Figure 9 2 is a side view of the pressing device in the embodiment.

[0051] In the figure: 1. Frame; 11. Support platform; 12. Transfer device; 13. Screw pair; 2. Guide cloth feeding device; 3. Oblique feeding device; 31. Mounting frame; 32. Vertical cylinder; 33. Horizontal cylinder; 34. Mounting block; 35. Rotating block; 351. Arc groove; 352. Limiting column; 36. Upward cylinder; 361. First clamping block; 37. Downward cylinder; 371. Second clamping block; 38. Driving cylinder; 4. Ultrasonic welding device; 41. Support frame; 42. Lifting cylinder; 43. Ultrasonic welding head; 5. Gluing device; 6. Pressing device; 61. First cylinder; 611. First fixing frame; 612. Pressing roller; 62. Second Cylinder; 621, second fixed frame; 622, guide bar; 6221, vertical section; 6222, inclined section; 63, third cylinder; 631, third fixed frame; 632, pressing block; 6321, V-shaped groove; 64, fourth cylinder; 641, fourth fixed frame; 642, rodless cylinder; 643, cutter; 7, center tube positioning winding device; 71, mounting seat; 72, winding motor; 73, plug-in column; 74, tightening cylinder; 75, abutting column; 76, slide rail; 77, sliding block; 8, jacking core assembly; 81, jacking cylinder; 811, fixed seat; 82, jacking roller; 83, guide rod; 9, unloading cylinder; 91, unloading block; 10, filter element roll. DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to the accompanying drawings.

[0053] A rolling mechanism and rolling method for producing RO membrane filter elements, such as Figure 1-3 As shown, the machine comprises a frame 1, on which is provided a support platform 11 and a transfer device 12. The transfer device 12 is used to transfer the stacked reverse osmosis membrane units to the support platform 11. The frame 1 is also provided with a guide cloth feeding device 2, an oblique feeding device 3, an ultrasonic welding device 4, a gluing device 5, a pressing device 6, and a center tube positioning and winding device 7. The guide cloth feeding device 2 delivers the guide cloth, which is a rolled material, to the support platform 11 via a feeding assembly. The oblique feeding devices are located on either side of the support platform 11, and a screw pair 13 is provided on the frame 1. The screw pair 13 drives the oblique feeding device 3 to reciprocate along the feeding direction during insertion and feeding. The gluing device 5 is provided above the support platform 11.

[0054] like Figure 4-6As shown, the oblique feeding device 3 includes a mounting frame 31, a vertical cylinder 32 and a horizontal cylinder 33 arranged on the mounting frame 31, the mounting frame 31 is connected to the screw pair 13, and a mounting block 34 is fixedly connected to the piston rod of the horizontal cylinder 33. A rotating block 35 is rotatably connected to the mounting block 34, and an arc groove 351 is provided on the rotating block 35. The angle of the arc groove 351 can be set to 20°~50°. In this embodiment, the angle of the arc groove 351 is set to 30°. Two limiting columns 352 that slide and cooperate with the arc groove 351 are provided on the mounting block 34. A clamping jaw assembly is provided on the rotating block 35, and the clamping jaw assembly includes an ascending cylinder 36 and a descending cylinder 37 fixed to the rotating block 35. A first clamping block 361 is provided on the piston rod of the ascending cylinder 36, and a second clamping block 371 is correspondingly provided on the piston rod of the descending cylinder 37. The first clamping block 361 and the second clamping block 371 are clamped together; the mounting block 34 is hinged with a driving cylinder 38, and the rear end of the driving cylinder 38 is hinged to the mounting block 34. The piston rod of the driving cylinder 38 is rotatably connected to the rotating block 35, and the driving cylinder 38 drives the rotating block 35 to rotate relative to the mounting block 34.

[0055] Ascending cylinder 36 drives first clamping block 361 to move, and descending cylinder 37 drives second clamping block 371 to move. When first clamping block 361 and second clamping block 371 move toward each other, can clamp, when both are away from, can unclamp. When the jaw assembly is clamped in the reverse osmosis membrane unit, it is tilted and inserted between central tube and guide cloth, driving cylinder 38 starts, drives rotating block 35 relative mounting block 34 to rotate, like this, rotating block 35 can drive jaw assembly relative mounting frame 31 to rotate after rotating, jaw assembly can drive reverse osmosis membrane unit to be inserted between central tube and guide cloth at certain tilt angle, the movement of jaw assembly can be carried out displacement adjustment by vertical cylinder 32, horizontal cylinder 33 and screw pair 13 in the insertion process, reverse osmosis membrane unit is tilted and inserted, can produce a clamping force to reverse osmosis membrane unit between central tube sidewall and guide cloth, can prevent reverse osmosis membrane unit from slipping off in the bundle process.

[0056] like Figure 8-9 As shown, the pressing device 6 includes a lifting and lowering pressing roller assembly, an introduction assembly, a material pressing assembly and a cutting assembly, and the material pressing assembly is correspondingly arranged above the ultrasonic welding device 4.

[0057] like Figure 8-9As shown, the pressure roller assembly includes a first cylinder 61 and a lower pressure roller 612. A first fixed frame 611 is provided on the piston rod of the first cylinder 61, and the lower pressure roller 612 is rotatably connected to the first fixed frame 611; the inlet assembly includes a second cylinder 62 and a material guide member. The material guide member is fixedly connected to the piston rod of the second cylinder 62 through a second fixed frame 621. The material guide member includes a plurality of material guide strips 622 arranged in sequence along the horizontal direction. The material guide strip 622 includes an integrally formed vertical section 6221 and an inclined section 6222 located at the bottom of the vertical section 6221. The vertical section 6221 and the inclined section 6222 form an acute angle, and the inclined section 6222 is arranged on the side close to the pressure roller assembly. The second cylinder 62 drives the material guide to press down, and a certain gap is left between the bottom end of the material guide and the supporting platform 11 for the insertion of the reverse osmosis membrane unit. When the reverse osmosis membrane unit is inserted between the central tube and the guide cloth, the reverse osmosis membrane unit moves into the angle between the central tube and the guide cloth under the guidance of the inclined section 6222, so that the reverse osmosis membrane unit can be accurately inserted; after insertion, the first cylinder 61 drives the pressing roller 612 to press down on the reverse osmosis membrane unit, so that the reverse osmosis membrane can be pressed and positioned, which is convenient for the gluing process.

[0058] like Figure 7-9 As shown, the pressing assembly includes a third cylinder 63 and a pressing block 632. The pressing block 632 is fixedly connected to the piston rod of the third cylinder 63 via a third fixing frame 631. The bottom surface of the pressing block 632 is provided with a V-shaped groove 6321. The ultrasonic welding device 4 includes a support frame 41, a lifting cylinder 42 provided on the support frame 41, and an ultrasonic welding head 43. The ultrasonic welding head 43 is fixedly connected to the piston rod of the lifting cylinder 42. The lifting cylinder 42 drives the ultrasonic welding head 43 to rise and fall relative to the support frame 41.

[0059] During ultrasonic welding, the third cylinder drives the press block 632 downward, embedding the upper surface of the center tube within the V-shaped groove 6321. Simultaneously, the lift cylinder 42 drives the ultrasonic welding head 43 upward, allowing it to push against the guide fabric and weld it to the center tube wall. After welding is complete, the lift cylinder 42 drives the ultrasonic welding head away from the center tube. This prevents the center tube from rotating during ultrasonic welding, ensuring a more precise weld position and a stronger weld.

[0060] like Figure 8-9As shown, the cutting assembly includes a fourth air cylinder 64, a rodless air cylinder 642, and a cutter 643 mounted on the rodless air cylinder 642. The rodless air cylinder 642 is fixedly connected to the piston rod of the fourth air cylinder 64 via a fourth mounting bracket 641. The rodless air cylinder 642 drives the cutter 643 along the axis of the central tube. Cutters 643 have blades on both sides. When the guide fabric is cut from the filter element roll 10, the fourth air cylinder 64 drives the fourth mounting bracket 641 downward, and the rodless air cylinder 642 drives the cutter 643 along the width of the guide fabric roll, thereby cutting the guide fabric roll. Since the cutter 643 has blades on both sides, the cutter 643 does not need to be reset after a single cut.

[0061] like Figure 7 As shown, the central tube positioning winding device 7 includes a mounting base 71, on which a winding assembly is provided, and the winding assembly includes a winding motor 72, a plug-in column 73, a tightening cylinder 74 and an abutment column 75; the plug-in column 73 is fixedly connected to the output shaft of the winding motor 72, and the tightening cylinder 74 is fixedly installed on the mounting base 71, and a slide rail 76 is provided on the mounting base 71, and a sliding block 77 is provided on the slide rail 76 for sliding. The abutment column 75 is rotatably connected to the sliding block 77 through a bearing, and the tightening cylinder 74 drives the abutment column 75 to move closer to or away from the plug-in column 73 through the sliding block 77, and the plug-in column 73 and the abutment column 75 are coaxially arranged. Mounting base 71 also houses a core assembly 8, which includes a force-lifting cylinder 81 and a force-lifting roller 82. Force-lifting cylinder 81 is fixedly mounted to mounting base 71, with its piston rod secured to a mounting base 811. Force-lifting roller 82 is rotatably connected to mounting base 811, with the central axis of force-lifting roller 82 parallel to the central axis of plug-in post 73. Force-lifting cylinder 81 is connected to a pressure-regulating valve. Mounting base 71 includes two guide holes, and the back of mounting base 811 is provided with two guide rods 83. When core assembly 8 rests against filter element roll 10, guide rods 83 engage with the guide holes.

[0062] One end of the central tube is plugged into the plug-in post 73, and the tightening cylinder 74 drives the sliding block 77 toward the plug-in post 73, causing the abutment post 75 to abut the other end of the central tube. When winding, the winding motor 72 drives the central tube to rotate through the plug-in post 73. During the winding process, the jacking cylinder 81 drives the top roller 82 to press against the outer wall of the roll, preventing the reverse osmosis membrane unit from loosening during the winding process. In addition, as the roll diameter increases during the winding process, the jacking cylinder 81 can be controlled by the pressure regulating valve, thereby controlling the tightening force of the top roller 82 on the roll, thereby improving the roll quality.

[0063] like Figure 7As shown, a discharge cylinder 9 is also fixedly connected to the mounting base 71. The piston rod of the discharge cylinder 9 is provided with a discharge block 91. The discharge block 91 has a through hole, and the plug post 73 extends through the through hole. When the filter element roll 10 is loaded or unloaded from the plug post 73, the tightening cylinder 74 first drives the abutment post 75 away from the center tube. Then, the discharge cylinder 9 drives the discharge block 91 to move along the plug post 73. The discharge block 91 moves toward the end of the filter element roll 10, and the filter element roll 10 is pushed axially from the plug post 73. This makes the discharge process faster and more convenient.

[0064] The bundling method comprises the following steps:

[0065] S1. Center tube loading: The center tube is fixedly mounted on the center tube positioning and winding device 7, and is positioned above the ultrasonic welding device 4;

[0066] S2. Welding of the guide cloth: The guide cloth feeding device 2 feeds the front end of the guide cloth roll toward the central tube. The ultrasonic welding device 4 cooperates with the pressing assembly to press the guide cloth toward the outer wall of the central tube. The front end of the guide cloth is welded and fixed to the outer wall of the central tube.

[0067] S3, guide cloth winding: the central tube positioning winding device 7 drives the guide cloth to be wound around the outer wall of the central tube, and the number of winding turns is 3 to 10 turns;

[0068] S4. Winding the reverse osmosis membrane unit: The oblique insertion feeding device 3 clamps the stacked reverse osmosis membrane unit and inserts the reverse osmosis membrane unit at an angle of 30° between the central tube and the guide cloth, so that the reverse osmosis membrane unit and the guide cloth are stacked; during the insertion process, the guide assembly guides the reverse osmosis membrane unit;

[0069] S5, glue coating: the pressure roller assembly presses down to press the reverse osmosis membrane onto the support platform 11, and the glue coating device 5 applies glue along the periphery of the upper surface of the reverse osmosis membrane unit;

[0070] S6, winding into bundle: The central tube positioning winding device 7 drives the central tube to rotate. When the central tube drives the guide cloth to wind, it can drive the reverse osmosis membrane unit on it to be wound around the central tube synchronously to form a filter element roll 10;

[0071] S7, cutting and separating: the cutting component cuts the guide cloth connected to the filter element roll 10, so that the filter element roll 10 is separated from the guide cloth.

[0072] In S3, the guide fabric welded to the central tube is wrapped several times around the outer wall of the central tube. The weld is then compressed by the wrapped fabric, preventing it from separating from the weld, ensuring a stronger weld. In S4, an induction assembly guides the reverse osmosis membrane, making insertion more accurate and rapid, thereby improving connection efficiency. This bundling method is highly efficient, convenient, and delivers high-quality results.

[0073] The basic working principle of the present invention is as follows: during the RO membrane filter element bundling process, the central tube is installed on the central tube positioning winding device 7, and then the central tube is moved above the ultrasonic welding device 4, and the guide cloth feeding device 2 sends the front end of the guide cloth roll to the bottom of the central tube, and the pressing assembly and the ultrasonic welding device 4 are pressed together to weld the front part of the guide cloth to the side wall of the central tube, and the winding motor 72 drives the central tube to rotate several times so that the guide cloth is wound around the outer wall of the central tube; then, the oblique insertion feeding device 3 grabs the reverse osmosis membrane unit and moves it to the central tube, and obliquely inserts it into the angle between the central tube and the guide cloth at a certain angle. The reverse osmosis membrane unit and the guide cloth are superimposed, and the introduction component can play a guiding role when the reverse osmosis membrane unit is inserted. Function: The pressure roller assembly presses down on the reverse osmosis membrane unit, and the glue coating device 5 coats glue on the upper surface of the reverse osmosis membrane unit. The pressure roller assembly presses the reverse osmosis membrane unit against the support platform 11 to play a positioning role, preventing the reverse osmosis membrane unit from being displaced during the gluing process; then the central tube positioning winding device 7 drives the central tube to rotate, and the reverse osmosis membrane unit can be wound around the central tube through the guide cloth to form a filter element roll 10. When the central tube positioning winding device 7 drives the filter element roll 10 away from the pressing device 6, the cutting assembly cuts the guide cloth connected to the filter element roll 10, so that the filter element roll 10 is separated from the guide cloth roll. During the cutting process, the clamping claw assembly clamps the guide cloth to play an auxiliary role, preventing the remaining guide cloth from sliding back after cutting. In this way, compared with the prior art of manually feeding the film roll machine, the oblique feeding device 3 can realize automatic feeding to the central tube, which has the effects of convenient winding, high efficiency, improved roll quality, and high degree of automation.

[0074] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A rolling mechanism for producing RO membrane filter elements, comprising a frame and a support platform provided on the frame, characterized in that: The frame is also provided with a guide cloth feeding device, an oblique feeding device, an ultrasonic welding device, a gluing device, a pressing device and a center tube positioning and winding device. The guide cloth feeding device conveys the guide cloth to the support platform. The oblique feeding device is correspondingly located on both sides of the support platform, and the oblique feeding device moves along the material conveying direction through a screw pair. The gluing device is arranged above the support platform. The pressing device includes a lifting roller assembly, an introduction assembly, a material pressing assembly and a cutting assembly, and the material pressing assembly is correspondingly arranged above the ultrasonic welding device; The central tube positioning and winding device is used to clamp the central tube and move the central tube to the ultrasonic welding device; The ultrasonic welding device is used to weld the guide cloth to the outer wall of the central tube; The oblique insertion feeding device is used to obliquely insert the reverse osmosis membrane unit between the guide cloth and the central tube; The pressure roller assembly includes a first cylinder and a lower pressure roller, a first fixing frame is provided on the piston rod of the first cylinder, and the lower pressure roller is rotatably connected to the first fixing frame; the introduction assembly includes a second cylinder and a material guide member, the material guide member is fixedly connected to the piston rod of the second cylinder through the second fixing frame, the material guide member includes a plurality of material guide strips arranged in sequence along the horizontal direction, the material guide strips include an integrally formed vertical section and an inclined section located at the bottom of the vertical section, the vertical section and the inclined section form an acute angle, and the inclined section is provided on a side close to the pressure roller assembly; The oblique feeding device includes a mounting frame, a vertical cylinder and a horizontal cylinder arranged on the mounting frame, a mounting block is fixedly connected to the piston rod of the horizontal cylinder, a rotating block is rotatably connected to the mounting block, an arc groove is provided on the rotating block, and a limiting column is provided on the mounting block to slide with the arc groove; the mounting block is hingedly connected to a driving cylinder, the piston rod of the driving cylinder is rotatably connected to the rotating block, and the driving cylinder drives the rotating block to rotate relative to the mounting block; a clamping claw assembly is provided on the rotating block; The clamping jaw assembly includes an ascending cylinder and a descending cylinder fixed to the rotating block. A first clamping block is provided on the piston rod of the ascending cylinder, and a second clamping block is correspondingly provided on the piston rod of the descending cylinder. The first clamping block is tightly fitted with the second clamping block.

2. A rolling mechanism for producing RO membrane filter elements according to claim 1, characterized in that: The ultrasonic welding device includes a support frame, a lifting cylinder provided on the support frame, and an ultrasonic welding head. The ultrasonic welding head is fixedly connected to the piston rod of the lifting cylinder, and the lifting cylinder drives the ultrasonic welding head to rise and fall relative to the support frame.

3. The rolling mechanism for producing RO membrane filter elements according to claim 1, characterized in that: The pressing assembly includes a third cylinder and a pressing block. The pressing block is fixedly connected to the piston rod of the third cylinder through a third fixing frame. A V-shaped groove is provided on the bottom surface of the pressing block.

4. The rolling mechanism for producing RO membrane filter elements according to claim 1, characterized in that: The cutting assembly includes a fourth cylinder, a rodless cylinder and a cutter arranged on the rodless cylinder. The rodless cylinder is fixedly connected to the piston rod of the fourth cylinder through a fourth fixing frame. The rodless cylinder drives the cutter to move along the axis of the central tube. Blades are provided on both sides of the cutter.

5. The rolling mechanism for producing RO membrane filter elements according to claim 1, characterized in that: The center tube positioning and winding device includes a mounting seat, a winding assembly is provided on the mounting seat, and the winding assembly includes a winding motor, a plug-in column, a tightening cylinder and an abutment column; the plug-in column is fixedly connected to the output shaft of the winding motor, the tightening cylinder is fixedly installed on the mounting seat, a sliding block is slidingly provided on the mounting seat, the abutment column is rotatably connected to the sliding block through a bearing, and the tightening cylinder drives the abutment column to move closer to or away from the plug-in column through the sliding block, and the plug-in column and the abutment column are coaxially arranged.

6. The rolling mechanism for producing RO membrane filter elements according to claim 5, characterized in that: A jacking core assembly is also provided on the mounting seat, and the jacking core assembly includes a jacking cylinder and a jacking roller. The jacking cylinder is fixedly installed on the mounting seat, and the piston rod of the jacking cylinder is provided with a fixed seat. The jacking roller is rotatably connected to the fixed seat. The central axis of the jacking roller is parallel to the central axis of the plug-in column, and the jacking cylinder is connected to a pressure regulating valve.

7. A method for the rolling mechanism of the RO membrane filter element according to claims 1-6, characterized in that: The following steps are involved: S1. Center tube loading: The center tube is fixedly installed on the center tube positioning and winding device, and is positioned above the ultrasonic welding device; S2. Guide cloth welding: The guide cloth feeding device feeds the front end of the guide cloth roll toward the central tube. The ultrasonic welding device cooperates with the pressing assembly to press the guide cloth toward the outer wall of the central tube. The front end of the guide cloth is welded and fixed to the outer wall of the central tube. S3, guide cloth winding: the center tube positioning winding device drives the guide cloth to be wound around the outer wall of the center tube, and the number of winding turns is 3 to 10 turns; S4. Winding the reverse osmosis membrane unit: The oblique insertion feeding device clamps the stacked reverse osmosis membrane units and inserts the reverse osmosis membrane units at an angle of 20° to 50° into the angle between the central tube and the guide cloth, so that the reverse osmosis membrane units and the guide cloth are stacked; during the insertion process, the guide assembly guides the reverse osmosis membrane units; S5. Gluing: The pressure roller assembly presses down to press the reverse osmosis membrane onto the support platform, and the glue coating device applies glue along the periphery of the upper surface of the reverse osmosis membrane unit; S6. Winding into bundles: The central tube positioning and winding device drives the central tube to rotate. When the central tube drives the guide cloth to wind, it can drive the reverse osmosis membrane unit on it to wind synchronously around the central tube to form a filter element roll; S7, cutting and separating: the cutting component cuts the guide cloth connected to the filter element roll, so that the filter element roll is separated from the guide cloth.

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