Filter paper end cap positioning fixture
By designing a filter paper end cap positioning fixture, automated welding of filter paper and non-woven fabric end caps was achieved, solving the problem of low automation in existing technologies and improving work efficiency and processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG UNIVERSE FILTER
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-31
AI Technical Summary
The current technology for filter paper end caps has a low degree of automation, resulting in poor work efficiency and difficulty in ensuring processing quality. In particular, the welding process between the nonwoven end cap and the filter paper requires manual operation, which is insufficient in terms of automation.
A filter paper end cap positioning fixture was designed, including a frame, a turntable rotation mechanism, a flip bearing seat, a feeding and opening assembly, a fixture positioning assembly, and a non-woven fabric end cap feeding mechanism. The filter paper is fed, clamped, and positioned by the automatic intermittent rotation of the turntable, and then automatically welded to the non-woven fabric end cap to form a finished filter element.
The automated welding of filter paper and non-woven fabric end caps has been achieved, which has improved work efficiency, ensured the uniformity and reliability of processing quality, and enhanced the automation level of finished filter elements.
Smart Images
Figure CN224576217U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to machinery and equipment for manufacturing filters, and more specifically to a filter paper end cap positioning fixture used in the production of filter cartridges. Background Technology
[0002] Currently, automotive filters generally include components such as a housing, filter element assembly, screw plate, check valve, and bypass valve. The filter element assembly consists of end caps (divided into upper and lower end caps), filter paper, and a central tube. The filter paper is a hollow cylindrical product (used to house the central tube). The end caps are annular and made of metal (or plastic), hence the name metal end caps (or plastic end caps). These end caps consist of two pieces, upper and lower, which correspond to the top and bottom of the filter paper, respectively. The bonding process generally involves gluing or heating (using lamps or heating wires). Currently, non-woven fabric end caps are being used (replacing metal or plastic end caps). This requires ultrasonic welding, which uses high-frequency ultrasonic friction to generate heat for the non-woven fabric end caps and filter paper feeding and positioning, end cap loading, welding (fusion), and finished product output. This process is entirely manual or semi-automated, requiring manual operation in between. Its automation level is low, its efficiency is poor, and the processing quality is difficult to guarantee. Summary of the Invention
[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a filter paper end cap positioning fixture that can automatically complete filter paper feeding, clamping, and positioning.
[0004] The objective of this invention is achieved through the following technical solution: a filter paper end cap positioning fixture, comprising a frame and a turntable rotation mechanism. Several sets of tilting bearing seats are mounted on the periphery of the turntable in the turntable rotation mechanism. These tilting bearing seats are connected to a fixture assembly frame via a tilting shaft. A feeding opening and closing assembly is installed within the fixture assembly frame. One side of the fixture assembly frame is movably connected to a fixture positioning shaft, which is mounted on the periphery of the turntable via a positioning shaft mounting bracket. A support plate is mounted on the turntable, and the fixture is mounted on the support plate. The positioning assembly includes a tooling positioning fork mounted above the tooling positioning shaft. The tooling positioning fork is connected to a fork lateral movement force source, which is connected to a fork lifting power source mounted on a support plate. A flip-to-position sensing plate is mounted on the tail of the flip shaft. A positioning sensor is mounted on the support plate and on the side of the tooling positioning assembly. The positioning sensor and the turntable rotation mechanism are electrically connected to a microcomputer control mechanism for unified control.
[0005] The feeding opening and closing assembly includes a filter paper clamping moving block installed in a tooling assembly frame. The tooling assembly frame has an inner groove that mates with the filter paper clamping moving block. End cap positioning pieces are installed on both the inner groove of the tooling assembly frame and the filter paper clamping moving block. The filter paper clamping moving block is connected to the outside of the tooling assembly frame through a moving block guide rod and a feeding opening and closing shaft, respectively. A compression spring is installed on the moving block guide rod.
[0006] A filter paper feeding fixture opening and closing mechanism is installed below the tooling assembly frame. The filter paper feeding fixture opening and closing mechanism includes a feeding lifting power source installed below the tooling assembly frame. The feeding lifting power source is connected to the feeding lifting opening and closing seat. A filter paper support plate and a feeding opening and closing power source are respectively installed on the feeding lifting opening and closing seat. The feeding opening and closing power source is connected to the feeding opening and closing fork. The feeding opening and closing fork is located below the feeding opening and closing shaft.
[0007] A nonwoven fabric end cap first feeding mechanism is installed on the outer periphery of the turntable and on the side of the filter paper feeding fixture opening and closing mechanism. The mechanism includes a feeding frame, on which are mounted a nonwoven fabric end cap storage assembly, a nonwoven fabric end cap lifting assembly, and a nonwoven fabric end cap gripping and conveying assembly that are connected to each other. The nonwoven fabric end cap gripping and conveying assembly includes a conveying power source mounted on the feeding frame. The conveying power source is connected to a gripping mounting plate. A gripping lifting power source is mounted on the gripping mounting plate and is connected to the gripping power source. The gripping power source is connected to a gripping claw. The gripping claw is a needle-shaped, extendable type. A stripping plate is mounted on the periphery of the gripping claw. The stripping plate is connected to a stripping power source through a stripping guide rod. The stripping power source is mounted on the gripping lifting power source.
[0008] The nonwoven fabric end cap storage assembly includes a storage turntable mounted on a feeding rack and several circumferentially arranged storage rods around the turntable, with stacked nonwoven fabric end caps fitted onto the storage rods. The nonwoven fabric end cap lifting assembly includes a linear lifting transmission module mounted on the feeding rack, a lifting fork, and an end cap positioning sleeve. The lifting fork is positioned on the bottommost nonwoven fabric end cap and lifts it linearly, allowing the lifted end cap to be positioned within the end cap positioning sleeve. The lifting fork is connected to the linear lifting transmission module, the end cap positioning sleeve is mounted on the feeding rack above the storage rods and to the side of the transfer power source, and the gripping claw is positioned above the end cap positioning sleeve.
[0009] By adopting the technical solution of this invention, the filter paper is fed, clamped, and positioned sequentially by the feeding and opening / closing assembly, the tooling fixture positioning assembly, and the filter paper feeding tooling opening / closing mechanism through the turntable rotation mechanism and the automatic intermittent rotation of the turntable. The nonwoven fabric end cap first feeding mechanism completes the feeding of the nonwoven fabric end cap onto the filter paper (i.e., the initial feeding), thereby automatically preparing for the welding of the filter paper and the nonwoven fabric end cap to form the finished filter element. It eliminates the need for intermediate manual operation, has a high degree of automation, high working efficiency, is robust and reliable, and ensures consistent processing quality, significantly improving the quality of the finished filter element. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the installation structure of the fully automatic ultrasonic welding machine for nonwoven end caps and filter paper used in this invention.
[0011] Figure 2 This is a schematic diagram of the structure of the present invention (one set of feeding opening and closing components does not have end cap positioning pieces installed to distinguish it).
[0012] Figure 3 for Figure 1 A schematic diagram of the opening and closing mechanism of the filter paper feeding fixture.
[0013] Figure 4 for Figure 1 A schematic diagram of the first feeding mechanism for the nonwoven fabric end cap.
[0014] Figure 5 for Figure 4 A schematic diagram of the structure of the nonwoven end cap gripping and transferring component. Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] like Figure 1 , Figure 2As shown, the present invention relates to a filter paper end cap positioning fixture for filter element production, comprising a frame 1 and a turntable rotation mechanism 10 (including a turntable and a turntable rotation control assembly, which are known technologies). Several sets of tilting bearing seats 20 are mounted around the turntable 11 of the turntable rotation mechanism 10. These tilting bearing seats 20 are connected to a fixture assembly frame 22 via a tilting shaft 21. A feeding opening and closing assembly is installed inside the fixture assembly frame 22. One side of the fixture assembly frame 22 is movably connected to a fixture positioning shaft 23, which is mounted on a positioning shaft mounting bracket 24. Around the turntable 11, a support plate 13 (fixed and non-rotating) is mounted on the turntable 11 (with a support rod 12 at its center). A tooling fixture positioning assembly 3 (as a set) is mounted on the support plate 13. The tooling fixture positioning assembly 3 includes a tooling positioning fork 31 mounted above the tooling positioning shaft 23. The tooling positioning fork 31 is connected to a fork lateral movement force source 32 (a fork lateral movement cylinder), which is connected to a fork lifting power source 33 (a fork lifting cylinder). The fork lifting power source 33 is mounted on the support plate 13. A flip-to-position sensing plate 34 is mounted at the tail of the flip shaft 20. A positioning sensor 35 is mounted on the support plate 13 and on the side of the tooling fixture positioning assembly 3. The positioning sensor 35 and the turntable rotation mechanism 10 are electrically connected to a microcomputer control mechanism 9 for unified control. The flip-in position sensor 34 rotates with the flip shaft 21, and the rotation of the turntable causes the flip-in position sensor 34 to correspond with the positioning sensor 35, thereby sensing the horizontal level of the tooling assembly frame after flipping (it must not tilt; if it tilts, the tooling positioning shaft cannot be inserted into the tooling assembly frame). This indicates whether the tooling fixture flipping mechanism has flipped the tooling assembly frame and flip shaft into position, preparing the tooling positioning fork of the tooling fixture positioning assembly 3 to re-insert the tooling positioning shaft into the tooling assembly frame. The center position of the turntable 11 does not rotate and is part of the installation control.
[0017] The feeding opening and closing assembly includes a filter paper clamping moving block 26 (located on the outer side) installed in the tooling assembly frame. The tooling assembly frame has an inner groove 221 that mates with the filter paper clamping moving block 26 (which has a groove) (the two mate to form the shape of the filter paper for positioning). End cap positioning pieces 25 (two pieces in opposite positions, each with a groove that mates with the end cap and filter paper) are installed on both the inner groove 221 of the tooling assembly frame 22 and the filter paper clamping moving block 26. The filter paper clamping moving block 26 is connected to the outer side of the tooling assembly frame 22 via two moving block guide rods 27 (located on both sides) and a feeding opening and closing shaft 28 (located in the center). A compression spring 29 is installed on the moving block guide rods 27. The moving block guide rods 27 and the feeding opening and closing shaft 28 are arranged side-by-side. The space formed between the two end cap positioning pieces and between the inner groove 221 and the filter paper clamping moving block 26 is just enough to accommodate the upper and lower assembly of the non-woven end cap and the filter paper.
[0018] like Figure 1 , Figure 2 As shown, the fully automatic ultrasonic welding machine for nonwoven end caps and filter paper used in this invention has the following components sequentially mounted on the outer periphery of the turntable 11 (on the frame, support plate, or outside the frame) and at the corresponding position of the filter paper end cap positioning fixture 2 (above, below, or to the side): a filter paper feeding fixture opening and closing mechanism 4, a nonwoven end cap first feeding mechanism 5, a first welding mechanism 6 (including a cooling fan 67), a fixture flipping mechanism 7, a nonwoven end cap second feeding mechanism 15, a second welding mechanism 16, and an end cap filter paper finished product discharge mechanism 8 (including a finished product receiving assembly 89). The turntable rotation mechanism 10, the filter paper feeding fixture opening and closing mechanism 4, the nonwoven end cap first feeding mechanism 5, the first welding mechanism 6, the fixture flipping mechanism 7, the nonwoven end cap second feeding mechanism 15, the second welding mechanism 16, and the end cap filter paper finished product discharge mechanism 8 are all electrically connected to a microcomputer control mechanism 9 and are uniformly controlled by it. The second feeding mechanism 15 for nonwoven end caps has the same structure as the first feeding mechanism 5 for nonwoven end caps, and the second welding mechanism 16 has the same structure as the first welding mechanism 6.
[0019] Through the automatic intermittent rotation of the turntable rotation mechanism 10 and its turntable 11, the filter paper is fed, clamped, and positioned sequentially by the tooling assembly frame 22 and the feeding opening and closing assembly, the tooling fixture positioning assembly 3, and the filter paper feeding tooling opening and closing mechanism 4. The non-woven fabric end cap first feeding mechanism 5 completes the feeding of the non-woven fabric end cap onto the filter paper (i.e., the initial feeding). The first welding mechanism 6 completes the welding of the filter paper and the non-woven fabric end cap. The tooling fixture flipping mechanism 7 completes the flipping of the tooling assembly frame 22 and the flattening of the filter paper. The non-woven fabric end cap second feeding mechanism 15 completes the feeding of the non-woven fabric end cap onto the flipped filter paper (i.e., the second feeding). The second welding mechanism 16 completes the second welding of the filter paper and the non-woven fabric end cap. The end cap filter paper finished product discharge mechanism 8 completes the finished product discharge. Thus, the entire process of welding the filter paper and the non-woven fabric end cap to form the filter element finished product is completed automatically. The feeding opening and closing assembly is installed in the tooling assembly frame 22, with one set on the left and one on the right. It corresponds to the feeding opening and closing of the filter paper feeding tooling opening and closing mechanism 4, the first end cap feeding of the nonwoven end cap first feeding mechanism 5, the first end cap filter paper welding of the first welding mechanism 6, the flat pressing and flipping of the tooling fixture flipping mechanism 7, the second end cap feeding of the nonwoven end cap second feeding mechanism 15, the second end cap filter paper welding of the second welding mechanism 16, and the finished product discharge of the end cap filter paper finished product discharge mechanism 8. There are also two sets of related process stations, thereby improving the assembly volume and work efficiency of end cap filter paper.
[0020] like Figure 1 , Figure 3 As shown, a filter paper feeding fixture opening and closing mechanism 4 is installed below the fixture assembly frame 22. The filter paper feeding fixture opening and closing mechanism 4 includes a feeding lifting power source 41 (a feeding lifting cylinder, which is mounted on the frame 1) installed below the fixture assembly frame 22. The feeding lifting power source 41 is connected to the feeding lifting opening and closing seat 42 (longitudinal position). A filter paper support plate 43 (facing inward, corresponding to the position of the end cover positioning piece and the filter paper clamping moving block) and a feeding opening and closing power source 44 (facing outward, a feeding opening and closing cylinder) are respectively installed on the feeding lifting opening and closing seat 42. The feeding opening and closing power source 44 (through the opening and closing fork mounting plate 46) is connected to the feeding opening and closing fork 45 (lateral position). The feeding opening and closing fork 45 is located below the feeding opening and closing shaft 28. The filter paper support plate 43 is mounted on the feeding lifting and opening seat 42 via a height adjustment guide rod 47. A height adjustment knob 48 is installed at the lower end of the height adjustment guide rod 47. By rotating the height adjustment knob 48, the height of the filter paper support plate 43 can be adjusted by the height adjustment guide rod 47 to accommodate different specifications of filter paper.
[0021] First, the tooling positioning shaft 23 is positioned inside one side of the tooling assembly frame 22, positioning the tooling assembly frame in a horizontal position. The turntable 11 rotates the tooling assembly frame 22 to directly above the filter paper feeding tooling opening and closing mechanism 4. The feeding lifting power source 41 and the feeding opening and closing power source 44 are activated, rising through the opening and closing fork mounting plate 46, and driving the feeding opening and closing fork 45 to pull the feeding opening and closing shaft 28 on the tooling assembly frame 22 outward (along the moving block guide rod 27), clamping the filter paper to the moving block 26 inside the tooling assembly frame. The inner groove 221 and the two end cap positioning pieces are separated and opened, allowing filter paper to be manually placed longitudinally between the filter paper clamping moving block 26 and the inner groove 221, and between the two end cap positioning pieces. The filter paper is supported from the bottom by the filter paper support plate 43. Then, the feeding opening and closing fork 45 is released, and the filter paper clamping moving block 26 and the inner groove 221, and the two end cap positioning pieces 25 are automatically pressed together and closed by the pressure spring 29 on the moving block guide rod 27, clamping the filter paper. Then, the turntable rotates the tooling assembly frame 22 with the filter paper to the position of the non-woven fabric end cap first feeding mechanism 5.
[0022] like Figure 1 , Figure 4 , Figure 5 As shown, a nonwoven fabric end cap first feeding mechanism 5 is installed on the outer periphery of the turntable 11 and on the side of the filter paper feeding fixture opening and closing mechanism 4. This mechanism includes a feeding frame 50, on which are mounted interconnected nonwoven fabric end cap storage components 51 (including a storage turntable 512 mounted on the feeding frame 50, and several circumferentially arranged storage rods 511 mounted around the storage turntable, with stacked nonwoven fabric end caps 14 on the storage rods 511), a nonwoven fabric end cap lifting component 52 (including a linear lifting transmission module 522, a lifting fork 521, and an end cap positioning sleeve 523 mounted on the feeding frame 50; the lifting fork 521 is positioned on the bottommost nonwoven fabric end cap and performs a linear lifting motion on it, allowing the lifted nonwoven fabric end cap to be positioned within the end cap positioning sleeve 523), and a nonwoven fabric end cap gripping and transferring component 53. The nonwoven fabric end cap gripping and transferring component 53 (such as...) Figure 5(As shown) includes a transfer power source 531 (a transfer cylinder) mounted on a loading rack 50. The transfer power source 531 is connected to a gripping mounting plate 532 (in a lateral position). A gripping lifting power source 533 (a gripping lifting cylinder) is mounted on the gripping mounting plate 532. The gripping lifting power source 533 is connected to a gripping power source 534 (a gripping cylinder) (in a longitudinal position). The gripping power source 534 is connected to a gripping claw 535 (in a longitudinal position). The gripping claw 535 is a needle-shaped, extendable type. A stripping plate 536 is mounted around the gripping claw 535. The stripping plate 536 is connected to a stripping power source 538 (a stripping cylinder, which is mounted on the gripping lifting power source 533) via a stripping guide rod 537. The lifting fork 521 is connected to the linear lifting transmission module 522 (including a linear lifting power source and a lifting transmission assembly). The end cap positioning sleeve 523 is mounted on the feeding rack 50 and is located above the storage rod 511 and to the side of the transfer power source 531. The gripping claw 535 is located above the end cap positioning sleeve 523. The linear lifting transmission module 522 controls the lifting fork 521 to linearly lift the stacked non-woven fabric end caps 14 on the storage rod 511 together. The stacked non-woven fabric end caps 14 on the storage rod 511 of the non-woven fabric end cap storage assembly 51 are lifted one by one by the lifting fork 521 and enter the end cap positioning sleeve 523 (multiple pieces at a time). Next, the gripping lifting power source 533 and gripping power source 534 of the nonwoven end cap gripping and transferring assembly 53 are activated. The gripping claw 535, which has descended to its position, reaches the end cap positioning sleeve 523 and performs a needle-like opening at the center of the nonwoven end cap to grip (one piece at a time) from its inner wall. It rises and is then carried by the transfer power source 531, along with the gripping mounting plate 532 and the nonwoven end cap, to the filter paper in the filter paper end cap positioning fixture 2. The gripping claw 535 descends and is activated by the unloading power source 538, which drives the unloading plate 536. At the same time, the gripping claw 535 releases and places the nonwoven end cap on the filter paper already mounted on the fixture assembly frame 22. Then, the turntable rotates the fixture assembly frame 22 with the filter paper and nonwoven end cap to the position of the first welding mechanism 6.
Claims
1. A filter paper end cap positioning fixture comprising a frame, a turntable rotating mechanism, characterized in that: Several sets of tilting bearing seats are installed around the turntable of the rotary mechanism. These tilting bearing seats are connected to a tooling assembly frame via a tilting shaft. A feeding opening and closing assembly is installed inside the tooling assembly frame. One side of the tooling assembly frame is movably connected to a tooling positioning shaft, which is mounted on the periphery of the turntable via a positioning shaft mounting bracket. A support plate is installed on the turntable, and a tooling fixture positioning assembly is mounted on the support plate. The tooling fixture positioning assembly includes a tooling positioning fork mounted above the tooling positioning shaft. This fork is connected to a fork lateral movement force source, which is connected to a fork lifting power source mounted on the support plate. A tilting positioning sensor is installed at the tail of the tilting shaft. A positioning sensor is installed on the support plate and on the side of the tooling fixture positioning assembly. The positioning sensor and the turntable rotary mechanism are electrically connected to a microcomputer control mechanism for unified control.
2. The filter paper end cap positioning fixture of claim 1, wherein: The feeding opening and closing assembly includes a filter paper clamping moving block installed in a tooling assembly frame. The tooling assembly frame has an inner groove that mates with the filter paper clamping moving block. End cap positioning pieces are installed on both the inner groove of the tooling assembly frame and the filter paper clamping moving block. The filter paper clamping moving block is connected to the outside of the tooling assembly frame through a moving block guide rod and a feeding opening and closing shaft, respectively. A compression spring is installed on the moving block guide rod.
3. The filter paper end cap positioning fixture of claim 1 or 2, wherein: A filter paper feeding fixture opening and closing mechanism is installed below the tooling assembly frame. The filter paper feeding fixture opening and closing mechanism includes a feeding lifting power source installed below the tooling assembly frame. The feeding lifting power source is connected to the feeding lifting opening and closing seat. A filter paper support plate and a feeding opening and closing power source are respectively installed on the feeding lifting opening and closing seat. The feeding opening and closing power source is connected to the feeding opening and closing fork. The feeding opening and closing fork is located below the feeding opening and closing shaft.
4. The filter paper end cap positioning fixture of claim 3, wherein: A nonwoven fabric end cap first feeding mechanism is installed on the outer periphery of the turntable and on the side of the filter paper feeding fixture opening and closing mechanism. The mechanism includes a feeding frame, on which are mounted a nonwoven fabric end cap storage assembly, a nonwoven fabric end cap lifting assembly, and a nonwoven fabric end cap gripping and conveying assembly that are connected to each other. The nonwoven fabric end cap gripping and conveying assembly includes a conveying power source mounted on the feeding frame. The conveying power source is connected to a gripping mounting plate. A gripping lifting power source is mounted on the gripping mounting plate and is connected to the gripping power source. The gripping power source is connected to a gripping claw. The gripping claw is a needle-shaped, extendable type. A stripping plate is mounted on the periphery of the gripping claw. The stripping plate is connected to the stripping power source through a stripping guide rod.
5. The filter paper end cap positioning fixture of claim 4, wherein: The nonwoven end cap storage assembly includes a storage turntable mounted on a feeding rack and several storage rods arranged in a circular pattern around the storage turntable, with stacked nonwoven end caps fitted onto the storage rods.
6. The filter paper end cap positioning fixture of claim 5, wherein: The nonwoven end cap lifting assembly includes a linear lifting transmission module, a lifting fork, and an end cap positioning sleeve mounted on the feeding rack. The lifting fork is located on the bottommost nonwoven end cap and lifts it linearly together. The nonwoven end cap that has been lifted into position enters the end cap positioning sleeve for positioning.
7. The filter paper end cap positioning fixture of claim 6, wherein: The lifting fork is connected to the linear lifting transmission module, the end cap positioning sleeve is mounted on the loading rack and is located above the storage rod and to the side of the transfer power source, and the gripping claw is located above the end cap positioning sleeve.
8. The filter paper end cap positioning fixture of claim 3, wherein: The filter paper support plate is mounted on the feeding lifting and opening seat via a height adjustment guide rod, and a height adjustment knob is installed at the lower end of the height adjustment guide rod.