A cutting and folding device for RO membrane filtration unit

Abstract

The present invention relates to a RO membrane filtration unit cutting and folding device in the field of filter element preparation technology, comprising a frame, a loading mechanism, a feeding mechanism, a spot welding mechanism and a cutting mechanism, the frame body is a frame structure composed of a beam and a column, the loading mechanism, the spot welding mechanism and the cutting mechanism are sequentially installed from the left side to the right side of the frame, and the feeding mechanism is used to sequentially convey the materials output from the loading mechanism to the spot welding station where the spot welding mechanism is located and the cutting station where the cutting mechanism is located to perform corresponding actions. The present invention forms a structural form in which a spacer layer is laid on the half surface of the RO membrane during the loading process, and at the same time, the spot welding mechanism is arranged in front of the cutting station, and the spot welding fixation is implemented before cutting, and the welding point position is cleverly arranged on the cutting line. The welding point is cut into two by cutting, so that the fixing effect of the spacer and the RO membrane and the flatness of the cutting can be guaranteed, and the work efficiency can be significantly improved by greatly reducing the number of welding points, so that the cutting device as a whole presents an excellent effect of simplicity, high efficiency and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of filter element preparation, and in particular to a RO membrane filtration unit cutting and folding device. Background Art

[0002] Reverse osmosis membrane elements (RO membrane elements) are the core components of water purification. The rolled reverse osmosis membrane elements are composed of a central water pipe, a water purification membrane group and a sealing plastic film. The water purification membrane group is composed of a pure water guide cloth, a reverse osmosis membrane and an inlet water guide net. The reverse osmosis membrane is folded, the inlet water guide net is located between the inner surfaces of the folded reverse osmosis membrane, the pure water guide cloth is located between the outer surfaces of the folded reverse osmosis membrane, and the sides of the membrane are sealed with glue. After the water purification membrane group is wrapped around the central water production pipe, the entire outer surface is wrapped with a sealing plastic film.

[0003] At present, when manufacturing reverse osmosis membranes and filter units formed by folding in half and wrapping a spacer, the reverse osmosis membrane (RO membrane) and the spacer are generally cut and stacked by independent mechanisms, and then the filter unit with the spacer as the interlayer is formed by the flipping and folding mechanism, and then the folded ends are hot-pressed by the hot-pressing mechanism to form crease lines. This structural design not only has a complex overall structural design, but also has a cumbersome process, resulting in low efficiency and high cost. For example, the publication number CN113304615A discloses a fully automatic production equipment and processing technology of RO membrane filter element, including a frame, a first placement table and a second placement table, the frame is provided with a feeding mechanism, a laminating mechanism, and a rolling mechanism; the feeding mechanism includes a screen feeding and cutting device, a membrane feeding and cutting device, a guide cloth feeding and cutting device and a central tube clamping and rotating device; the laminating mechanism includes a first manipulator, a second manipulator, a third manipulator and a folding device; the rolling mechanism includes an oblique feeding device, a welding device, an outer guide cloth feeding device and a film pasting device, and the frame is also provided with a translation conveying device. This invention adopts the above-mentioned method to carry out fully automated production, which improves production efficiency, but the above-mentioned related problems still exist. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a RO membrane filtration unit cutting and folding device.

[0005] According to the present invention, a RO membrane filtration unit cutting device includes a frame and a loading mechanism, a feeding mechanism, a spot welding mechanism and a cutting mechanism installed on the frame;

[0006] The feeding mechanism comprises a mesh cylinder and an RO membrane cylinder, wherein the mesh cylinder is located above the RO membrane cylinder, the mesh width output by the mesh cylinder is half the width of the RO membrane output by the RO membrane cylinder, and the mesh layer is laid on half of the side surface of the RO membrane to form a pre-cut filter unit;

[0007] The feeding mechanism comprises two parallel slide rails, each of which is provided with two sets of clamps, which are respectively referred to as first clamps and second clamps, and the first clamps and the second clamps clamp the two opposite sides of the pre-cut filter unit at a predetermined distance and move forward;

[0008] The spot welding mechanism comprises a first displacement component and a spot welding machine, wherein the first displacement component drives and connects the spot welding machine, and when the pre-cut filter unit is displaced to the spot welding station, the spot welding machine performs spot welding and fixing along the side edge of the partition mesh located inside the RO membrane, and each welding point is crimped on the partition mesh and the RO membrane, and the welding points are spaced apart along the central axis of the RO membrane;

[0009] The cutting mechanism includes a second displacement component and a cutter, the second displacement component is driven and connected to the cutter, when the pre-cut filter unit fixed by spot welding is moved to the cutting station, the cutter is displaced between the first clamp and the second clamp, the cutting knife of the cutter moves in a direction perpendicular to the central axis of the RO membrane and cuts the pre-cut filter unit into strip-shaped filter units by cutting the weld point in two, half weld points are retained on both side edges of each filter unit, and there is no weld point between the two half weld points on both side edges of each filter unit.

[0010] In some embodiments, the feeding mechanism further includes a screen feeding assembly and a RO membrane feeding assembly, the screen feeding assembly includes a first drive motor, a first air expansion shaft, a first tensioning shaft and a first bearing platform, the screen cylinder is sleeved on the first air expansion shaft, the RO membrane feeding assembly includes a second drive motor, a second air expansion shaft, a second tensioning shaft and a second bearing platform, and the RO membrane cylinder is sleeved on the second air expansion shaft;

[0011] The end of the RO membrane passes through the second tensioning shaft and the second supporting platform in sequence and then moves toward the spot welding mechanism. The end of the partition net passes through the first tensioning shaft and the first supporting platform in sequence and then moves toward the spot welding mechanism and is layered on the RO membrane to form the pre-cut filter unit.

[0012] In some embodiments, the first displacement assembly includes a first X-axis robotic arm and a first Z-axis robotic arm, the first X-axis robotic arm is connected to the frame, the first Z-axis robotic arm is drive-connected to the first X-axis robotic arm, and the spot welding machine is drive-connected to the first Z-axis robotic arm.

[0013] In some embodiments, the second displacement assembly includes a second X-axis robotic arm, a sliding pair, and a second Z-axis robotic arm, the sliding pair being two matching vertically sliding sliders, two groups of the second X-axis robotic arms being respectively located on the outsides of the two slide rails, the cutting machine being mounted on the two groups of X-axis robotic arms through the two groups of sliding pairs, and the two groups of Z-axis robotic arms being drivingly connected to the cutting machine.

[0014] The present invention also provides an RO membrane filtration unit cutting and folding device, which uses the RO membrane filtration unit cutting device and also includes a folding mechanism and an indentation mechanism. Two groups of the second clamps clamp the filter unit and move it to the folding station. The filter unit is formed into a folded portion through the folding mechanism, and the indentation structure of the indentation mechanism clamps the folded portion to form an indentation line on the filter unit.

[0015] In some embodiments, the folding mechanism includes a slide plate, a press machine and a folding machine, two of the slide plates are slidably connected to the frame, at least one group of the press machine is provided on each of the slide plates, the folding plate of the folding machine is located above the slide plate, two groups of the second clamps move the filter unit onto the slide plate, the pressure head of the press machine presses the filter unit onto the two slide plates, the folding machine drives the folding plate to move downward so that the lower edge surface of the folding plate is pressed on the central axis of the filter unit, and while the folding plate continues to move downward, the two slide plates move closer to the middle, and the filter unit forms a folded portion protruding downward.

[0016] In some embodiments, the folding mechanism further includes two groups of third displacement components, and each group of the third displacement components is arranged corresponding to one of the slide plates;

[0017] The third displacement assembly includes a third X-axis robotic arm and a third Y-axis robotic arm, the third Y-axis robotic arm is drivingly connected to the side of the slide, the third X-axis robotic arm is drivingly connected to the third Y-axis robotic arm, the third X-axis robotic arm is located above the slide, the third Y-axis robotic arm drives the third X-axis robotic arm and the slide to move synchronously, and the press is connected to the third X-axis robotic arm.

[0018] In some embodiments, the creasing mechanism includes a creasing machine and a slide, wherein the creasing machine is slidably mounted on the slide, and is provided with two hot pressing plates. When the folded portion moves to the creasing station along with the folding plates, the creasing machine drives the two hot pressing plates to clamp the folded portion in an open state, and the two hot pressing plates close after the folding plate is pulled out, and the folded portion of the filter unit is creasingly marked by hot pressing.

[0019] In some embodiments, the slide is a horizontal L-shape, and the vertical slide and the horizontal slide of the slide are arc transitions. When the creasing machine moves along the slide from the horizontal slide to the vertical slide, the two hot pressing plates are in a vertically opened state, so that the folded portion enters between the two hot pressing plates.

[0020] In some embodiments, a material receiving mechanism is further included, which includes a material receiving drive motor, a conveyor belt and a hopper. Multiple hoppers are placed on the conveyor belt. The material receiving drive motor drives the conveyor belt to move. The hopper is placed under the creasing machine to hold the filter unit that forms the creasing line.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The RO membrane filter unit cutting device of the present invention forms a structural form in which the spacer layer is laid on half of the RO membrane during the feeding process, and at the same time, a spot welding mechanism is arranged in front of the cutting station. The spot welding is performed before cutting, and the welding point position is cleverly set on the cutting line. The welding point is cut in two by cutting, so that the fixing effect of the spacer and the RO membrane and the flatness of the cutting can be guaranteed, and the work efficiency can be significantly improved by greatly reducing the number of welding points, so that the cutting device as a whole presents an excellent effect of simplicity, high efficiency and low cost. In addition, by spot welding the spacer and the single-layer RO membrane in the filter unit, the other half of the RO membrane in the filter unit has a relative degree of freedom, which can effectively reduce the wrinkle problem when winding to form a cylindrical filter membrane core, solves the problem that the crease line end of the filter unit is difficult to adjust and there are a large number of wrinkles under the three-layer full welding fixing method, and effectively improves the flatness of the filter unit after winding.

[0023] 2. The RO membrane filtration unit cutting and folding device of the present invention changes the flip folding into the downward pressing folding, so that the folding and indentation actions can be carried out continuously, which significantly improves the work efficiency. In addition, the pressing action of the pressing machine makes the indentation line formed by downward pressing more accurate, thereby improving the accuracy of the filtration unit after being folded in half.

[0024] 3. The RO membrane filtration unit cutting and folding device of the present invention ensures the continuous cutting and folding process of the filtration unit by adding a material receiving mechanism capable of continuously receiving materials, thereby further improving the cutting and folding efficiency as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 It is a schematic diagram of the front and side three-dimensional structure of the cutting and folding device of the RO membrane filtration unit of the present invention;

[0027] Figure 2 It is a rear lateral stereoscopic structural schematic diagram of the cutting and folding device of the RO membrane filtration unit of the present invention;

[0028] Figure 3 It is a schematic diagram of the mechanism of the cutting and folding device of the RO membrane filtration unit of the present invention in a state without a frame;

[0029] Figure 4 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the installation structure of the feeding mechanism and the cutting mechanism of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the spot welding mechanism of the present invention;

[0032] Figure 7 It is a schematic diagram of the installation structure of the slide plate and the press machine of the folding mechanism of the present invention;

[0033] Figure 8 It is a structural schematic diagram of a folding machine of the folding mechanism of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the indentation mechanism of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the material receiving mechanism of the present invention;

[0036] Fig.11 It is a schematic diagram of the three-dimensional structure of the RO membrane filtration unit cutting and folding device after overall installation of the present invention. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. Example

[0038] This embodiment provides a RO membrane filtration unit cutting device, such as Figure 1-6 As shown in Figure 11, it includes a frame 100, a loading mechanism 200, a feeding mechanism 300, a spot welding mechanism 400 and a cutting mechanism 500. The main body of the frame 100 is a frame structure composed of beams and columns. The loading mechanism 200, the spot welding mechanism 400 and the cutting mechanism 500 are sequentially installed from the left side to the right side of the frame 100. The feeding mechanism 300 is used to sequentially transport the materials output from the loading mechanism 200 to the spot welding station where the spot welding mechanism 400 is located and the cutting station where the cutting mechanism 500 is located to perform corresponding actions.

[0039] The feeding mechanism 200 includes a mesh cylinder 210 and an RO membrane cylinder 220 for providing materials, and also includes a mesh feeding assembly 230 for driving the mesh cylinder 210 to output materials, and an RO membrane feeding assembly 240 for driving the RO membrane cylinder 220 to output materials. The width of the mesh cylinder 210 is half of the width of the RO membrane cylinder 220. At this time, the width of the mesh 211 output from the mesh cylinder 210 is half of the width of the RO membrane 221 output from the RO membrane cylinder 220. The mesh feeding assembly 230 mainly includes a first driving motor 231, a first air expansion shaft 232, a first tensioning shaft 233 and a first bearing platform 234 installed on the frame 100. The mesh cylinder 210 is sleeved on the first air expansion shaft 232, and the first driving motor 231 drives the first air expansion shaft 232 to rotate, and the mesh 211 on the mesh cylinder 210 is output outward. In this embodiment, the first tensioning shaft 233 is composed of three V-shaped cross bars, and the outputted spacer net 211 adopts a V-shaped route to bypass the three cross bars of the first tensioning shaft 233 in sequence, and then is placed on the first support platform 234 and output outward. The first tensioning shaft 233 designed with a V-shaped structure can increase the number of tensioning rods that the spacer net 211 passes through during output, thereby improving the flatness of the spacer net 211 after output. The RO membrane feeding assembly 240 mainly includes a second driving motor 241, a second air expansion shaft 242, a second tensioning shaft 243 and a second support platform 244 installed on the frame 100. The RO membrane cylinder 220 is installed on the second air expansion shaft 242, and at this time, the RO membrane cylinder 220 is located below the spacer net cylinder 210, and one side of the spacer net cylinder 210 and the RO membrane cylinder 220 are flush in the vertical direction. The second driving motor 241 drives the second air expansion shaft 242 to rotate, and the RO membrane 221 output from the RO membrane cylinder 220 is placed on the second supporting platform 244 after passing through the second tensioning shaft 243 and outputted outward. The outputted spacer net 211 is laid on the RO membrane 221, and the outer side edge of the spacer net 211 is kept basically flush with the outer side edge of the RO membrane 221, and the inner side edge of the spacer net 211 is kept basically flush with the central axis of the RO membrane 221. The central axis of the RO membrane 221 here refers to the longitudinal central axis along its output direction. At this time, the structure in which the spacer net 211 is laid on the half side of the RO membrane 221 is recorded as a pre-cut filter unit.

[0040] The feeding mechanism 300 mainly includes a first clamping jaw 310, a second clamping jaw 320 and a slide rail 330. There are two slide rails 330, which are fixed on the frame 100 at a predetermined distance and parallel to each other. A group of first clamping jaws 310 and a group of second clamping jaws 320 are slidably arranged on each slide rail 330, that is, the two groups of first clamping jaws 310 are slidably arranged on the two slide rails 330 respectively, and the two groups of second clamping jaws 320 are slidably arranged on the two slide rails 330 respectively. The first clamping jaw 310 and the second clamping jaw 320 are driven by a driving mechanism to slide along the slide rail 330 and perform clamping and opening and closing actions. In this embodiment, the first clamp 310 is located upstream of the second clamp 320, and both the first clamp 310 and the second clamp 320 are clamp structures, and the clamp length of the second clamp 320 is greater than the clamp length of the first clamp 310, so that after the pre-cut filter unit is cut into an independent filter unit, the second clamp 310 can clamp the filter unit better and improve the flatness of the clamped filter unit. After the pre-cut filter unit enters the platform between the two slide rails 330, the first clamps 310 on both sides and the second clamps 320 on both sides clamp the sides of the pre-cut filter unit in a symmetrical manner along the central axis of the RO membrane 221, and at this time, the first clamp 310 and the second clamp 320 on the same side are spaced a predetermined distance apart.

[0041] The spot welding mechanism 400 mainly includes a first displacement assembly 410 and a spot welder 420. The first displacement assembly 410 is mainly composed of a first X-axis mechanical arm 411 and a first Z-axis mechanical arm 412. The first X-axis mechanical arm 411 is fixedly mounted on the frame 100 through a support beam, and the first Z-axis mechanical arm 412 is driven and connected to the first X-axis mechanical arm 411, and the first Z-axis mechanical arm 412 is driven by the first X-axis mechanical arm 411 to move horizontally in a direction parallel to the central axis of the RO membrane 221. The spot welder 420 is driven and connected to the first Z-axis mechanical arm 412, and the spot welder 420 is driven and moved vertically up and down by the first Z-axis mechanical arm 412. The spot welder 420 is provided with a spot welding head 421, and the spot welding head 421 is used to implement spot welding and fixing of the partition net 211 and the RO membrane 221 in the pre-cut filter unit. After the driving mechanism drives the first clamp 310 and the second clamp 320 to clamp the pre-cut filter unit and move to the spot welding station, the first X-axis mechanical arm 411 drives the first Z-axis mechanical arm 412 to adjust the spot welder 420 to a predetermined position. At this time, the spot welding head 421 is located above the central axis of the RO membrane 221 of the pre-cut filter unit. After the first Z-axis mechanical arm 412 drives the spot welding machine 420 to move down to a predetermined distance, the spot welding machine 420 drives the spot welding head 421 to perform spot welding to form a welding spot, and the welding spot is half pressed on the partition 211 on one side of the central axis of the RO membrane 221, and the other half is pressed on the RO membrane 221 on the other side of the central axis of the RO membrane 221. After the first welding spot is welded, the first Z-axis mechanical arm 411 drives the first Z-axis mechanical arm 412 to move a predetermined distance and / or the driving mechanism drives the first clamp 310 and the second clamp 320 to continue to move forward a predetermined distance, and the spot welding machine 420 performs the spot welding operation of the subsequent predetermined welding spots. Finally, the welding points on the pre-cut filter unit are arranged at a predetermined distance basically along the central axis of the R0 membrane 221.

[0042] The cutting mechanism 500 mainly includes a second displacement assembly 510 and a cutting machine 520. The second displacement assembly 510 mainly includes a second X-axis mechanical arm 511, a sliding pair 512 and a second Z-axis mechanical arm 513. The two second X-axis mechanical arms 511 are respectively connected to the frame 110, and the two second X-axis mechanical arms 511 are respectively located on the outside of the two slide rails 330. The sliding pair 512 is two sliding matching sliders, the lower end of one slider is connected to the second X-axis mechanical arm 511, and the other slider is connected and fixed to one end of the cutting machine 520. The cutting machine 520 is mounted on the two sets of second X-axis mechanical arms 511 in a vertically movable manner through two sets of sliding pairs 512. While the second Z-axis mechanical arm 513 is fixed to the frame 100, its driving arm is connected and fixed to the cutting machine 520. There are two groups of second Z-axis mechanical arms 513 connected to the cutter 520, and the two groups of second Z-axis mechanical arms 513 are arranged at intervals. After the first clamp 310 and the second clamp 320 clamp the pre-cut filter unit after spot welding and enter the cutting station, the cutter 520 is displaced between the first clamp 310 and the second clamp 320 through the action of the second X-axis mechanical arm 511. Here, the so-called between the first clamp 310 and the second clamp 320 refers to the connection line between the two groups of first clamps 310 and the connection line between the two groups of second clamps 320. At this time, the cutter 520 is driven by the second Z-axis mechanical arm 513 to move downward until the cutting blade of the cutter 520 is pressed against the surface of the pre-cut filter unit, and then the cutter 520 drives the cutting blade to move quickly from one side to the other side to achieve the cutting of the pre-cut filter unit. When the pre-cut filter unit is cut into a strip filter unit of a predetermined width by the cutter 520, its cutting position is the welding point position, that is, the welding point is cut into two by the cutter 520 to form a half welding point, and the edges of both sides of each filter unit are retained as half welding points. By defining the cutting position as the welding point position, it can be ensured that there are welding points for fixing the spacer 211 and the RO membrane 221 on both sides of each filter unit, and the spot welding position can form a corresponding relationship with the cutting position, which greatly improves the work efficiency. In this embodiment, each filter unit only forms two and a half welding points on the edges of both sides, and there are no other welding points between the two and a half welding points on the two sides of each filter unit, that is, the welding points for fixing the spacer 211 and the RO membrane 221 in each of the filter units are two and a half welding points located on the edges of both sides. This design, on the basis of ensuring the spot welding fixing effect of the spacer and the RO membrane, minimizes the number of welding points, reduces costs, and improves the flatness of the filter unit when it is wound into a membrane core in the later stage.

[0043] The RO membrane filtration unit cutting device provided in this embodiment forms a structural form in which the spacer layer is laid on half of the RO membrane during the feeding process, and at the same time, the spot welding mechanism is arranged in front of the cutting station. The spot welding is performed before cutting, and the welding point position is cleverly set on the cutting line. The welding point is cut in two by cutting, which can ensure the fixing effect of the spacer and the RO membrane and the flatness of the cutting, and can significantly improve the work efficiency by greatly reducing the number of welding points, so that the cutting device as a whole presents an excellent effect of simplicity, high efficiency and low cost. In addition, by spot welding the spacer and the single-layer RO membrane in the filter unit, the other half of the RO membrane in the filter unit has relative freedom, which can effectively reduce the wrinkle problem when winding to form a cylindrical filter membrane core, solves the problem that the crease line end of the filter unit is difficult to adjust and there are a lot of wrinkles in the three-layer full welding fixing method, and effectively improves the flatness of the filter unit after winding. Example

[0044] This embodiment 2 is a RO membrane filtration unit cutting and folding device formed on the basis of embodiment 1, using the RO membrane filtration unit cutting device described in embodiment 1, such as Figure 1-11 As shown, a folding mechanism 600 and a creasing mechanism 700 are also included.

[0045] The folding mechanism 600 mainly includes a slide plate 610, a press 620 and a folding machine 630. The slide plates 610 are two pieces, and the two slide plates 610 are slidably connected to the rectangular frame of the frame 100. The two slide plates 610 after the sliding connection are located behind the cutting mechanism 500. The two slide plates 610 are driven by the driving machine to approach or move away from each other in the horizontal direction, and the horizontal movement direction of the two slide plates 610 is perpendicular to the central axis direction of the RO membrane 221. At least one group of presses 620 is arranged on each slide plate 610, and the presses 620 are used to press and position the filter units moved onto the two slide plates 610. In this embodiment, two groups of presses 620 are arranged on each slide plate 610, and the presses 620 and the slide plates 610 are synchronously moved by the third displacement assembly 640. There are two groups of the third displacement assembly 640, and each group of the third displacement assembly drives one slide plate 610 and two groups of presses 620. The third displacement assembly 640 includes a third X-axis mechanical arm 641 and a third Y-axis mechanical arm 642. The third Y-axis mechanical arm 642 is mounted on the frame structure of the rack 100. At this time, the third Y-axis mechanical arm 642 is adjacent to the rear side wall of the slide 610. The third Y-axis mechanical arm 642 is connected and fixed to the slide 610 through a connecting block, and then the slide 610 is driven to move horizontally through the third Y-axis mechanical arm 642. The third X-axis mechanical arm 641 is drivingly connected to the third Y-axis mechanical arm 642, and the press 620 is connected to the third X-axis mechanical arm 641. The folding machine 630 mainly includes a folding plate 631 and a third driving motor 632 for driving the folding plate 631 to move vertically up and down. The third driving motor 632 is installed on the frame 100 and is located at the rear side of the two slides 610. The folding plate 631 is driven and connected to the driving shaft of the third driving motor 632 and is located above the two slides 610. The folding plate 631 is basically located in the middle of the two slides 610. The two sets of second clamps 320 clamp the filter unit and move it to the two slides 610. At this time, the two slides 610 are adjusted to have a predetermined distance between them through two sets of third Y-axis mechanical arms 642. After the position of the press 620 is adjusted by the third X-axis mechanical arm 641, the press 620 drives the pressure head 621 to press the filter unit tightly against the slide 610, and the second clamp 320 releases the clamping of the filter unit and resets. The third driving motor 632 drives the folding plate 631 to move downward and makes the lower edge surface contact with the folding line of the filter unit. The folding line is the central axis of the R0 membrane, which is basically the middle line between the two half welding points. At this time, while the third driving motor 632 drives the folding plate 631 to continue to move downward, the third Y-axis robot arm 642 drives the two slides 610 to move toward the middle position synchronously, so that the folding plate 631 presses the middle part of the filter unit to the bottom of the two slides 610 and forms a protrusion, which is recorded as the folding part. The top of the folding part is the position where the indentation line needs to be formed.

[0046] The creasing mechanism 700 mainly includes a creasing machine 710 and a slide 720. In the present embodiment, there are two slides 720, and the two slides 720 are horizontally placed in an L-shape, and the corner part is an arc transition, that is, the transition between the horizontal slide and the vertical slide of the horizontal L-shaped slide 720 is an arc slide. The main body 712 of the creasing machine 710 is slidably arranged on the two slides 720, and two hot pressing plates 711 are arranged at the front end of the main body 712. The opening, closing and clamping actions of the two hot pressing plates 711 are driven by a driving cylinder arranged in the main body 712, and the main body 712 is slid along the slide 720 by a fourth driving motor 713 located outside the main body 712, thereby driving the hot pressing plate 711 to move. When the folding plate 631 presses down the filter unit to form a folded portion, the fourth driving motor 713 drives the main body 712 to slide from the horizontal part of the slideway 720 to the vertical part, and at the same time, the driving cylinder in the main body 712 drives the two hot pressing plates 711 to open. After the folded portion of the filter unit moves down a predetermined distance, the folded portion enters between the two hot pressing plates 711 which are in a vertically opened state at this time, the folding plate 631 is pulled out under the driving action of the third driving motor 632, and the pressing machine 620 drives the pressure head 621 to release the pressing action on the filter unit, and the two hot pressing plates 711 are closed under the action of the driving cylinder of the main body 712 to achieve the heat treatment of the folded portion of the filter unit to form an indentation line, and at the same time, under the action of the fourth driving motor 713, the main body 712 drives the two hot pressing plates 711 to reset, and the filter unit moves down accordingly.

[0047] The RO membrane filtration unit cutting and folding device provided in this embodiment changes the flip folding into the downward pressing folding, so that the folding and indentation actions can be carried out continuously, which significantly improves the work efficiency. In addition, the pressing action of the pressing machine makes the indentation line formed by the downward pressing more accurate, thereby improving the accuracy of the filter unit after being folded in half. Example

[0048] This embodiment 3 is formed on the basis of embodiment 2, by adding a material receiving mechanism capable of continuously receiving materials, so as to ensure the continuous progress of the cutting and folding process of the filter unit, and further improve the overall efficiency of cutting and folding. Specifically:

[0049] like Figure 1-11As shown, it also includes a material receiving mechanism 800, which mainly includes a material receiving drive motor 810, a conveyor belt 820 and a hopper 830. The conveyor belt 820 is installed on the structural frame of the frame 100, and the drive motor 810 drives the conveyor belt 820 to move. The hopper 830 is placed on the conveyor belt 820, and there are multiple hoppers 830 located on the conveyor belt 820, and the hopper 830 is located below the slideway 720. The conveyor belt 820 is driven by the drive motor 810 to rotate, thereby driving the hopper 830 to move to a predetermined position. After the filter unit moves down to a predetermined position with the hot pressing plate 711, the two hot pressing plates 711 are opened, and the filter unit forming the crease line falls into the hopper 830 below. When a hopper 830 contains a predetermined amount of filter units, the hopper 830 containing the predetermined amount is driven by the drive motor 810 to move forward to the unloading station to be unloaded, and the subsequent hopper moves forward to the receiving station to receive the material, thereby ensuring the continuity of the process.

[0050] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A cutting and folding device for RO membrane filtration unit, characterized in that: It comprises an RO membrane filtration unit cutting device, a folding mechanism (600) and an indentation mechanism (700); The RO membrane filtration unit cutting device comprises a frame (100) and a loading mechanism (200), a feeding mechanism (300), a spot welding mechanism (400) and a cutting mechanism (500) installed on the frame (100); The feeding mechanism (200) comprises a mesh cylinder (210) and an RO membrane cylinder (220), the mesh cylinder (210) being located above the RO membrane cylinder (220), the width of the mesh (211) output by the mesh cylinder (210) being half the width of the RO membrane (221) output by the RO membrane cylinder (220), and the mesh (211) layer being laid on a half side surface of the RO membrane (221) to form a pre-cut filtering unit; The feeding mechanism (300) comprises two parallel slide rails (330), each of the slide rails (330) being provided with two groups of clamping jaws, the two groups of clamping jaws being respectively recorded as a first clamping jaw (310) and a second clamping jaw (320), the first clamping jaw (310) and the second clamping jaw (320) clamping two opposite sides of the pre-cut filter unit at a predetermined distance and moving forward; The spot welding mechanism (400) comprises a first displacement component (410) and a spot welder (420); the first displacement component (410) is driven to connect to the spot welder (420); when the pre-cut filter unit is displaced to the spot welding station, the spot welder (420) performs spot welding along the side edge of the partition (211) located inside the RO membrane (221); each welding point is crimped onto the partition (211) and the RO membrane (221); and the welding points are distributed at intervals along the central axis of the RO membrane (221); The cutting mechanism (500) comprises a second displacement component (510) and a cutting machine (520), wherein the second displacement component (510) is driven and connected to the cutting machine (520), and when the pre-cut filter unit fixed by spot welding is moved to the cutting station, the cutting machine (520) is displaced between the first clamping jaw (310) and the second clamping jaw (320), and the cutting blade of the cutting machine (520) moves in a direction perpendicular to the central axis of the RO membrane (221) and cuts the pre-cut filter unit into strip-shaped filter units by cutting the weld point in two, and half weld points are respectively retained on the two side edges of each filter unit, and there is no weld point between the two half weld points on the two side edges of each filter unit; The two groups of the second clamping jaws (320) clamp the filter unit and move it to the folding station, the filter unit is formed into a folded portion by the folding mechanism (600), and the indentation structure of the indentation mechanism (700) clamps the folded portion to form an indentation line on the filter unit.

2. The RO membrane filtration unit cutting device according to claim 1, characterized in that: The feeding mechanism (200) further comprises a screen feeding assembly (230) and an RO membrane feeding assembly (240); the screen feeding assembly (230) comprises a first driving motor (231), a first air expansion shaft (232), a first tensioning shaft (233) and a first bearing platform (234); the screen cylinder (210) is sleeved on the first air expansion shaft (232); the RO membrane feeding assembly (240) comprises a second driving motor (241), a second air expansion shaft (242), a second tensioning shaft (243) and a second bearing platform (244); and the RO membrane cylinder (220) is sleeved on the second air expansion shaft (242); The end of the RO membrane (221) passes through the second tensioning shaft (243) and the second supporting platform (244) in sequence, and then moves toward the spot welding mechanism (400); the end of the partition net (211) passes through the first tensioning shaft (233) and the first supporting platform (234) in sequence, and then moves toward the spot welding mechanism (400) and is layered on the RO membrane (221) to form the pre-cut filter unit.

3. The RO membrane filtration unit cutting device according to claim 1, characterized in that: The first displacement assembly (410) comprises a first X-axis mechanical arm (411) and a first Z-axis mechanical arm (412); the first X-axis mechanical arm (411) is connected to the frame (100); the first Z-axis mechanical arm (412) is drivingly connected to the first X-axis mechanical arm (411); and the spot welding machine (420) is drivingly connected to the first Z-axis mechanical arm (412).

4. The RO membrane filtration unit cutting device according to claim 1, characterized in that: The second displacement assembly (510) comprises a second X-axis mechanical arm (511), a sliding pair (512) and a second Z-axis mechanical arm (513); the sliding pair (512) is two matching vertically sliding slide blocks; the two groups of the second X-axis mechanical arms (511) are respectively located outside the two slide rails (330); the cutting machine (520) is mounted on the two groups of the second X-axis mechanical arms (511) via the two groups of the sliding pairs (512); and the two groups of the second Z-axis mechanical arms (513) are drivingly connected to the cutting machine (520).

5. The RO membrane filtration unit cutting and folding device according to claim 1, characterized in that: The folding mechanism (600) comprises a slide plate (610), a material pressing machine (620) and a folding machine (630). Two slide plates (610) are slidably connected to the frame (100). Each slide plate (610) is provided with at least one set of the material pressing machine (620). The folding plate (631) of the folding machine (630) is located above the slide plate (610). Two sets of the second clamping claws (320) move the filter unit to the slide plate. (610), the pressure head (621) of the pressing machine (620) presses the filter unit onto the two slides (610), and the folding machine (630) drives the folding plate (631) to move downward so that the lower edge of the folding plate (631) is pressed onto the central axis of the filter unit. When the folding plate (631) continues to move downward, the two slides (610) move toward the middle, and the filter unit forms a folded portion protruding downward.

6. The RO membrane filtration unit cutting and folding device according to claim 5, characterized in that: The folding mechanism (600) further comprises two groups of third displacement components (640), each group of the third displacement components (640) being arranged corresponding to one of the slide plates (610); The third displacement assembly (640) comprises a third X-axis mechanical arm (641) and a third Y-axis mechanical arm (642); the third Y-axis mechanical arm (642) is drivingly connected to the side of the slide plate (610); the third X-axis mechanical arm (641) is drivingly connected to the third Y-axis mechanical arm (642); the third X-axis mechanical arm (641) is located above the slide plate (610); the third Y-axis mechanical arm (642) drives the third X-axis mechanical arm (641) and the slide plate (610) to move synchronously; and the material press (620) is connected to the third X-axis mechanical arm (641).

7. The RO membrane filtration unit cutting and folding device according to claim 5, characterized in that: The creasing mechanism (700) comprises a creasing machine (710) and a slideway (720). The creasing machine (710) is slidably mounted on the slideway (720). The creasing machine (710) is provided with two hot pressing plates (711). When the folded portion moves to the creasing station along with the folding plate (631), the creasing machine (710) drives the two hot pressing plates (711) to clamp the folded portion in an open state. The two hot pressing plates (711) are closed after the folding plate (631) is withdrawn, and a creasing line is formed on the folded portion of the filter unit by hot pressing.

8. The RO membrane filtration unit cutting and folding device according to claim 7, characterized in that: The slideway (720) is in a horizontal L-shape, and the vertical slideway and the horizontal slideway of the slideway (720) are in an arc transition. When the creasing machine (710) moves from the horizontal slideway to the vertical slideway along the slideway (720), the two hot pressing plates (711) are in a vertically opened state, so that the folded portion enters between the two hot pressing plates (711).

9. The RO membrane filtration unit cutting and folding device according to claim 1 or 8, characterized in that: The invention also comprises a material receiving mechanism (800), wherein the material receiving mechanism (800) comprises a material receiving drive motor (810), a conveyor belt (820) and a hopper (830), wherein a plurality of hoppers (830) are arranged on the conveyor belt (820), the material receiving drive motor (810) drives the conveyor belt (820) to move, and the hopper (830) is arranged below the creasing machine (710) and is used for receiving the filter unit that forms the creasing line.

Images