Filtering element lower film forming mechanism and filtering element production apparatus

Abstract

The utility model discloses a filter piece lower membrane forming mechanism and filter piece production equipment, and forming mechanism includes: install on the frame and punch and weld subassembly, punch and weld subassembly includes the mounting bracket and sets up the first base on the mounting bracket, the upper portion of first base is equipped with the first cylinder, and the movable end of first cylinder is equipped with the first punch cutter of punch lower membrane, still includes the second base and sets up the second cylinder on the second base, and the movable end of second cylinder is equipped with the second punch cutter for punching PTFE membrane to the lower membrane on, the bottom of frame is equipped with the welding machine for welding PTFE membrane and lower membrane in the bearing plate, the utility model discloses realized lower membrane punching, PTFE membrane accurate adhesion and efficient welding integration automatic forming, has the advantages such as high degree of automation, high punching precision, welding quality stability and automatic waste collection, is applicable to the batch production of filter piece.

Description

Technical Field

[0001] This utility model relates to the field of automated production technology, and in particular to a filter element lower membrane forming mechanism and filter element production equipment. Background Technology

[0002] Filter elements are widely used in ostomy bag filtration systems and typically consist of an upper membrane, a lower membrane, and a cotton core positioned between them, used to separate gas and liquid. To ensure good air permeability and water resistance, a polytetrafluoroethylene (PTFE) membrane is usually welded onto the lower membrane. The PTFE membrane, with its air-permeable but water-impermeable properties, is a crucial functional layer of the filter element.

[0003] In existing technologies, PTFE membrane welding is mostly completed manually and in steps. This method has the following problems: the lower membrane punching and PTFE membrane welding cannot form an automated continuous process, requiring manual repositioning, which is inefficient; PTFE membranes are soft, and manual bonding can easily lead to wrinkles, misalignment, or uneven weld edges, resulting in insufficient air tightness; due to the unstable welding precision of the membrane material, it is easy to have deviations in the position of the vent holes or incomplete welds, affecting the overall filtration performance and consistency of the filter element.

[0004] Therefore, there is an urgent need for equipment and methods that can achieve automatic punching of the lower membrane, precise cutting of PTFE membrane, and stable welding, so as to improve the automation level of filter element production and welding quality. Utility Model Content

[0005] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a filter element lower membrane forming mechanism and filter element production equipment to solve the problems of poor PTFE membrane bonding accuracy, weak welding and low production efficiency in the prior art.

[0006] This utility model discloses a filter element lower membrane forming mechanism, which is used for punching and welding the filter element lower membrane and PTFE membrane. The forming mechanism includes: The punching and welding assembly is mounted on the frame. The punching and welding assembly includes a mounting frame and a first base disposed on the mounting frame. A first cylinder is provided on the upper part of the first base, and a first punching knife for punching the lower film is provided on the movable end of the first cylinder. The punching and welding assembly also includes a second base and a second cylinder disposed on the second base. The movable end of the second cylinder is provided with a second punching knife for punching the PTFE membrane onto the lower membrane. The frame is provided with a welding machine for welding the PTFE membrane and the lower membrane at the bottom of the support plate.

[0007] In one or more embodiments of this utility model, the frame is provided with a lower film unwinding roller, a PTFE film unwinding roller, a PTFE film take-up roller, and a material pulling assembly. The lower film is wound on the lower film unwinding roller and connected to the material pulling assembly so as to move along the production direction under the drive of the material pulling assembly.

[0008] In one or more embodiments of the present invention, the forming mechanism further includes a third base disposed on the mounting frame, the third base being provided with a PTFE film feeding component, the PTFE film feeding component being connected to a motor disposed on the third base via a gear set, the PTFE film being disposed on a PTFE film unwinding roller and passing sequentially through the PTFE film feeding component and the PTFE film take-up roller.

[0009] In one or more embodiments of this utility model, the material pulling assembly includes a first material pulling member, a second material pulling member, and a third material pulling member connected by a transmission. The end of the third material pulling member is provided with a material pulling cylinder. The fixed end of the material pulling cylinder is installed on the frame, and the movable end is connected to the third material pulling member to drive the material pulling assembly to reciprocate and clamp the lower film to discharge along the production direction.

[0010] In one or more embodiments of this utility model, the first material pulling component includes a base plate mounted on a frame, a slide rail slider component mounted on the base plate, a finger cylinder mounted on the slide rail slider component, and a clamping plate for clamping the lower film mounted on the finger cylinder. The lower film is discharged along the production direction in sequence under the drive of the lower film unwinding roller, the clamping roller, and the clamping plate.

[0011] In one or more embodiments of this utility model, the frame is provided with a waste collection pipe at the lower part of the second punching blade and the lower film to collect the portion of the lower film that has been punched off.

[0012] In one or more embodiments of this utility model, the end of the welding machine is provided with a welding component for welding the lower membrane and the PTFE membrane.

[0013] In one or more embodiments of this utility model, the welding machine is an ultrasonic welding machine.

[0014] In one or more embodiments of this utility model, the cutting edge size of the first punching blade is smaller than that of the second punching blade.

[0015] Another aspect of this utility model provides a filter element production equipment, which includes the filter element lower membrane forming mechanism described above.

[0016] The beneficial effects of this utility model are: from the unwinding and precise punching of the lower film and PTFE film to the final welding and forming, the entire process is completed in one integrated manner, which significantly reduces manual intervention and process changeover time, and greatly improves production efficiency.

[0017] This invention uses a first cylinder to drive a first punching cutter to punch holes in the lower membrane, and a second cylinder to drive a second punching cutter to cut the PTFE membrane. Combined with a precision material pulling assembly, it achieves accurate positioning of the membrane material, ensuring that the PTFE membrane and the opening area of ​​the lower membrane are precisely aligned, thus avoiding the misalignment and insufficient precision caused by traditional manual operation.

[0018] This utility model's material feeding assembly employs a combination of multi-stage linkage and cylinder reciprocating motion, enabling smooth and precise film delivery and preventing uneven tension or deviation of the film material during transport. The PTFE film feeding component independently controls the delivery of the PTFE film via a motor and gear set, ensuring uniform and stable feeding.

[0019] In this invention, functional components are cleverly integrated into the frame, resulting in a small footprint, compact structure, and easy installation, maintenance, and connection with upstream and downstream equipment, thus forming a complete filter production line. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the filter element in one embodiment of the present invention; Figure 2 This is a schematic diagram of the filter element lower membrane forming mechanism in one embodiment of the present invention; Figure 3 This is a schematic diagram of the material pulling assembly in one embodiment of the present invention; Figure 4 This is a side view of the material pulling assembly in one embodiment of the present invention; Figure 5 This is a schematic diagram of the punching and welding assembly in one embodiment of the present invention; Figure 6 This is a front view of the punching and welding assembly in one embodiment of the present invention; Figure 7 This is a side view of the punching and welding assembly in one embodiment of the present invention.

[0021] In the picture: Frame 100, unwinding roll 101, PTFE film unwinding roll 102, PTFE film take-up roll 103; Material pulling assembly 200, first material pulling component 21, base plate 211, slide rail slider 212, finger cylinder 213, clamping plate 214, clamping roller 215, material pulling cylinder 216, second material pulling component 22, third material pulling component 23; The components include: a punching and welding assembly 300, a mounting bracket 301, a first base 302, a first punching blade 303, a waste collection pipe 304, and a first cylinder 312. Second base 305, second cylinder 306, second punching cutter 307, welding machine 308, welded part 309, third base 310, PTFE membrane feeding part 311, motor 313, gear set 314; Filter element 400, lower membrane 401, upper membrane 402, PTFE membrane 403, cotton core 404, connecting pipe 405, connecting pipe mounting port 406. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be noted that, unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] like Figure 1 As shown, this utility model provides a filter element lower membrane forming mechanism, which includes a frame 100, a material pulling assembly 200, and a punching and welding assembly 300, for automated punching and welding of the filter element 400 lower membrane 401 and PTFE membrane 403. In this embodiment, the filter element 400 has a lower membrane 401, an upper membrane 402, and a cotton core 404 disposed between them. The lower membrane 401 is provided with a PTFE membrane 403, and a connecting pipe installation port 406 is opened at the other end of the PTFE membrane 403, into which a connecting pipe 405 is inserted. This embodiment only provides a detailed structural description of the punching and welding parts of the lower membrane 401 and PTFE membrane 403 during the production process.

[0026] like Figure 2 As shown, in a further embodiment, the upper front end of the frame 100 is provided with a lower film unwinding roller 101 and a PTFE film unwinding roller 102. The lower film 401 is wound on the lower film unwinding roller 101, and the PTFE film 403 is wound on the PTFE film unwinding roller 102. The lower film 401 enters the feeding assembly 200 through the clamping roller 215. After the PTFE film 403 is drawn out from the PTFE film unwinding roller 102, it passes sequentially through the PTFE film feeder 311 and the PTFE film take-up roller 103. The PTFE film feeder 311 is mounted on the third base 310 on the mounting frame 301, and the PTFE film 403 is accurately and uniformly fed by the gear set 314 driven by the motor 313, ensuring that the required length of PTFE film is accurately delivered to the punching station. The PTFE film take-up roller 103 is used to recover the backing paper or waste edges of the PTFE film.

[0027] like Figure 3 As shown, in a further embodiment, the material pulling assembly 200 is used for intermittent and precise delivery of the lower film 401, and includes a first material pulling member 21, a second material pulling member 22, and a third material pulling member 23.

[0028] like Figure 4 As shown, the first material pulling component 21 is mounted on the base plate 211 of the frame 100, and a slide rail slider component 212 is provided on it to ensure smooth movement. A finger cylinder 213 is mounted on the slide rail slider component 212, and the movable end of the finger cylinder 213 is connected to the clamping plate 214. During the conveying process of the lower film 401, the lower film moves along the production direction under the drive of the lower film unwinding roller 101, the clamping roller 215, and the clamping plate 214 in sequence. The end of the third material pulling component 23 is provided with a material pulling cylinder 216. The fixed end of the material pulling cylinder 216 is mounted on the frame 100, and the movable end is connected to the third material pulling component 23. The material pulling cylinder 216 reciprocates periodically, driving the entire material pulling assembly 200 to clamp the lower film 401 and perform step-by-step material output along the production direction, precisely positioning the lower film 401 at the punching and welding station. In this embodiment, the first pulling component 21, the second pulling component 22, and the third pulling component 23 have similar structures and principles, so the specific structures of the second pulling component 22 and the third pulling component 23 will not be described in detail here.

[0029] like Figures 5-7 As shown, in a further embodiment, the punching and welding assembly 300 includes a mounting bracket 301 mounted on the frame 100, which includes three cooperating components. The process includes punching the lower membrane 401, feeding the PTFE membrane 403, punching the PTFE membrane 403, and welding it to the lower membrane 401.

[0030] In a further embodiment, the mounting bracket 301 is provided with a first base 302, and the upper part of the first base 302 is provided with a first cylinder 312, the movable end of which is connected to a first punching cutter 303. The first punching cutter 303 is used to punch out ventilation holes at predetermined positions on the lower film 401.

[0031] In a further embodiment, a second cylinder 306 is provided on the second base 305, and its movable end is connected to a second punching blade 307. The second punching blade 307 is used to punch the PTFE membrane 403 to a specific size and precisely attach it to the surface of the punched lower membrane 401. It is worth noting that the cutting edge size of the first punching blade 303 is usually smaller than that of the second punching blade 307 to ensure that the PTFE membrane can completely cover the perforated area of ​​the lower membrane and leave a welding edge.

[0032] In a further embodiment, below the second punching blade 307 and the lower film 401, a waste collection pipe 304 is also provided on the frame 100 for immediate collection of waste generated during the punching process, specifically the portion of the lower film 401 that has been punched off, to keep the working area clean and prevent waste from contaminating or affecting subsequent production.

[0033] In a further embodiment, a welding machine 308 is provided at the bottom of the support plate 500, with a welding component 309 connected to its end. Preferably, the welding machine 308 is an ultrasonic welding machine; after the PTFE membrane 403 is precisely punched and covers the punched area of ​​the lower membrane 401, the welding machine 308 performs ultrasonic welding on the contact edges of the PTFE membrane 403 and the lower membrane 401 through the welding component 309, realizing molecular-level fusion of the two membrane materials to form a strong and sealed breathable layer. This welding method has the advantages of fast welding speed, low energy consumption, beautiful weld seam and no obvious thermal deformation, ensuring the good performance of the filter element 400.

[0034] During production, the lower film 401 is released by the lower film unwinding roller 101 and fed into the punching station via the feeding assembly 200 in a step-by-step manner. Once precisely positioned, the first cylinder 312 drives the first punching blade 303 to descend, forming a through hole in the lower film 401. Almost simultaneously, the PTFE film feeder 311 feeds the PTFE film 403 to the corresponding position, and the second cylinder 306 drives the second punching blade 307 to descend, punching and bonding the PTFE film 403 above the through hole in the lower film 401. Subsequently, the welding machine 308 starts, using the welding component 309 to perform ultrasonic welding on the bonding area, firmly welding the PTFE film 403 to the lower film 401. After welding is completed, the feeding assembly 200 starts again, sending the formed lower film 401 out of the station, while a new lower film area enters for punching, achieving continuous automation throughout the entire process.

[0035] This utility model also provides a filter element production equipment, which includes the filter element lower membrane forming mechanism described in Embodiment 1 above. This lower membrane forming mechanism can serve as a key module in the filter element production line, seamlessly integrating with subsequent processes such as cotton core placement, upper membrane covering, preliminary welding and positioning, tube insertion, and final high-frequency welding and forming, thereby forming a complete automated filter element production line. By integrating this lower membrane forming mechanism, the efficiency, product quality, and consistency of the entire production line can be significantly improved.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A filter element lower membrane forming mechanism, said forming mechanism being used for punching and welding the filter element (400) lower membrane (401) and PTFE membrane (403), characterized in that, The molding mechanism includes: The punching and welding assembly (300) is mounted on the frame (100). The punching and welding assembly (300) includes a mounting frame (301) and a first base (302) disposed on the mounting frame (301). The upper part of the first base (302) is provided with a first cylinder (312), and the movable end of the first cylinder (312) is provided with a first punching blade (303) for punching the lower film (401). The punching and welding assembly (300) also includes a second base (305) and a second cylinder (306) disposed on the second base (305). The movable end of the second cylinder (306) is provided with a second punching blade (307) for punching the PTFE membrane (403) onto the lower membrane (401). The frame (100) is provided with a welding machine (308) for welding the PTFE membrane (403) and the lower membrane (401) at the bottom of the support plate (500).

2. The filter element lower membrane forming mechanism according to claim 1, characterized in that, The frame (100) is provided with a lower film unwinding roller (101), a PTFE film unwinding roller (102), a PTFE film take-up roller (103), and a material pulling assembly (200). The lower film (401) is wound on the lower film unwinding roller (101) and connected to the material pulling assembly (200) so as to move along the production direction under the drive of the material pulling assembly (200).

3. The filter element lower membrane forming mechanism according to claim 2, characterized in that, The forming mechanism also includes a third base (310) disposed on the mounting frame (301). The third base (310) is provided with a PTFE film feeding component (311). The PTFE film feeding component (311) is connected to a motor (313) disposed on the third base (310) via a gear set (314). The PTFE film (403) is disposed on the PTFE film unwinding roller (102) and passes through the PTFE film feeding component (311) and the PTFE film take-up roller (103) in sequence.

4. The filter element lower membrane forming mechanism according to claim 2, characterized in that, The material pulling assembly (200) includes a first material pulling component (21), a second material pulling component (22), and a third material pulling component (23) connected by a transmission. The end of the third material pulling component (23) is provided with a material pulling cylinder (216). The fixed end of the material pulling cylinder (216) is installed on the frame (100), and the movable end is connected to the third material pulling component (23) to drive the material pulling assembly (200) to reciprocate and clamp the lower film (401) to discharge along the production direction.

5. The filter element lower membrane forming mechanism according to claim 4, characterized in that, The first material pulling component (21) includes a base plate (211) on the frame (100), a slide rail slider component (212) is installed on the base plate (211), a finger cylinder (213) is installed on the slide rail slider component (212), and a clamping plate (214) for clamping the lower film (401) is installed on the finger cylinder (213). The lower film (401) is discharged along the production direction in sequence under the drive of the lower film unwinding roller (101), the clamping roller (215) and the clamping plate (214).

6. The filter element lower membrane forming mechanism according to claim 1, characterized in that, The frame (100) is provided with a waste collection pipe (304) at the lower part of the second punching blade (307) and the lower film (401) to collect the part of the lower film (401) that has been punched off.

7. The filter element lower membrane forming mechanism according to claim 1, characterized in that, The welding machine (308) is equipped with a welding component (309) at its end for welding the lower membrane (401) and the PTFE membrane (403).

8. The filter element lower membrane forming mechanism according to claim 1, characterized in that, The welding machine (308) is an ultrasonic welding machine.

9. A filter element lower membrane forming mechanism according to claim 1, characterized in that, The cutting edge size of the first punch (303) is smaller than that of the second punch (307).

10. A filter element manufacturing equipment, characterized in that, The filter element production equipment includes the filter element lower membrane forming mechanism as described in any one of claims 1 to 9.

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