Gluing limiting device for filter manufacturing

Abstract

The utility model relates to the field of filter production, in particular to a gluing limiting device for filter manufacturing, which comprises a limiting plate with a U-shaped section, limiting components are symmetrically connected to the inner side of the limiting plate in a sliding manner, each limiting component comprises a moving plate, sliding grooves are symmetrically formed in the inner side of the limiting plate, and two ends of the moving plate are respectively positioned in the sliding grooves. A limiting clamping plate is installed on the side, away from the limiting plate, of the movable plate, a bent limiting part is arranged at one end of the limiting clamping plate, the other end of the limiting clamping plate is rotationally connected with adjusting fasteners, and the adjusting fasteners are oppositely arranged. The closed end of the limiting plate makes contact with the surface of the filter screen, so that the limiting assembly moves on the inner side of the limiting plate, the bent limiting part is pressed to the inner side of the frame, through the receding gap between the bent limiting part and the inner wall of the limiting plate, the gap formed by the filter screen and the frame is kept consistent, a glue gun can conduct gluing conveniently, the production efficiency can be improved, and the production cost is reduced. And the glue can be coated more uniformly.

Description

Technical Field

[0001] This utility model relates to the field of filter manufacturing, and in particular to a glue-applying limiting device for filter manufacturing. Background Technology

[0002] An FFU (Filter Fan Unit) is an air purification device widely used in cleanrooms, laboratories, medical facilities, and other fields. Its main function is to purify the air by using airflow generated by a fan and passing it through a high-efficiency filter. It mainly consists of three parts: a fan, a filter, and a housing. The fan generates airflow and draws air into the device; the filter removes dust, bacteria, and other impurities from the air to ensure the purity of the output air; and the housing provides protection and support, fixing the fan and filter in place. When air is drawn into the device by the fan, it passes through the filter to remove particulate matter, bacteria, and other harmful substances. The treated air is then delivered into the room by the fan, completing the air purification process.

[0003] The filter is a key component in the air purification process. It is responsible for removing particulate matter such as dust, bacteria, and viruses from the air. The filter generally uses high-efficiency filter materials such as ultra-fine glass fiber as filter paper. It has extremely high filtration efficiency and good dust holding capacity. It is one of the most important filter elements in the FFU fan filter unit. It can effectively filter out particles ≥0.3 microns in the air, including pollen, dust, bacteria, and viruses. The filtration efficiency is usually ≥99.95%.

[0004] During the production process of the filter, the folded filter paper needs to be placed in the frame and sealed with glue using the corresponding filter screen. However, because the folded filter paper has a certain elasticity, the filter screen and the frame will fit tightly together. The conventional operation method is to press the filter screen by hand to make it easier to form a certain gap between the filter screen and the frame for applying glue.

[0005] Regarding the aforementioned technologies, the gaps formed by manually pressing the filter screen and frame are often difficult to ensure uniformity. This leads to uneven glue distribution during application, affecting the bonding effect. Uneven gaps can also prevent the glue from fully penetrating every corner between the filter screen and frame, reducing the strength and sealing of the bond. Uneven bonding directly affects the filter's sealing performance and may even allow unfiltered air to bypass the filter paper and enter the clean area, reducing filtration efficiency. Furthermore, manually pressing the filter screen and applying glue requires high operational skills and patience, which also affects the filter's production efficiency. Utility Model Content

[0006] The main technical problem solved by this utility model is to provide a glue-applying limiting device for filter manufacturing, which keeps the gap between the filter screen and the frame consistent, improves the uniformity of glue application, enhances the sealing performance of the filter, and increases the production efficiency of the filter.

[0007] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a glue-applying limiting device for filter manufacturing, comprising: a limiting plate with a U-shaped cross-section, a limiting component symmetrically slidably connected to the inner side of the limiting plate, the limiting component including a movable plate, sliding grooves symmetrically opened on the inner side of the limiting plate, both ends of the movable plate being located in the sliding grooves, a limiting plate installed on the side of the movable plate away from the limiting plate, a bending limiting part provided at one end of the limiting plate, and an adjusting fastener rotatably connected to the other end of the limiting plate, the adjusting fasteners being respectively arranged facing each other, and a clearance gap being formed between the bending limiting part and the inner wall of the limiting plate;

[0008] The width of the movable plate near the adjusting fastener is smaller than the width of the sliding groove, while the width of the other end of the movable plate is adapted to the sliding groove.

[0009] By adopting the above technical solution, the closed end of the limiting plate is in close contact with the filter screen, allowing the limiting component to move inside the limiting plate. This, combined with the bending limiting part pressing against the inside of the frame, ensures that the gap between the filter screen and the frame remains consistent through the clearance between the bending limiting part and the inner wall of the limiting plate. This allows the glue gun to apply glue, improving production efficiency and making the glue application more uniform.

[0010] In a preferred embodiment, the present invention can be further configured such that: the adjusting fastener includes a waist-shaped adjusting plate, and a rotating protrusion is symmetrically connected to the side of the waist-shaped adjusting plate away from the limiting plate; the waist-shaped adjusting plate and the limiting plate are connected by bolts.

[0011] By adopting the above technical solution, the operator rotates the rotating protrusion, which causes the waist-shaped adjusting plate to rotate slightly, so that the moving plate can move in the sliding groove, thereby separating the limiting plate along the frame of the filter.

[0012] In a preferred embodiment, the present invention can be further configured such that: the end of the bending limiting part away from the adjusting fastener is provided with an inclined surface, and the inclined surface is located away from the limiting plate.

[0013] By adopting the above technical solution, the bending limiting part and inclined surface design on the limiting plate can provide a precise limiting effect when in contact with the filter. At the same time, the inclined surface helps the end filter of the bending limiting part to smoothly enter the limiting position, reducing the force-bearing area.

[0014] In a preferred embodiment, the present invention can be further configured such that the two sides of the bending limiting portion away from the adjusting fastener are rounded.

[0015] By adopting the above technical solution, the rounded corner design can reduce the frictional resistance between the bending limiting part and the filter or other contact parts. When the filter is placed or moved to the limiting position, the rounded corner can provide a smoother contact surface, reducing the resistance and wear caused by friction.

[0016] In a preferred embodiment, the present invention can be further configured such that the distance between the sliding grooves is equal to the height of the waist-shaped adjusting plate.

[0017] By adopting the above technical solution, since the distance between the sliding grooves matches the height of the waist-shaped adjusting plate, the accuracy and consistency of each adjustment can be ensured when the adjusting fastener moves within the sliding groove. This helps maintain the accuracy of the filter position during the adhesive application process, prevents adhesive application problems caused by improper adjustment, avoids adjustment errors caused by the mismatch between the sliding groove and the adjusting plate size, and improves the accuracy and reliability of the device.

[0018] In a preferred embodiment, the present invention can be further configured such that: the two ends of the limiting plate are provided with inclined portions, and the length of the closed end of the limiting plate is greater than the length of the open end.

[0019] By adopting the above technical solution, the inclined part design provides a natural guiding path for the filter, making it easier for the limiting plate to slide into the limiting position during the placement of the filter. This design reduces the difficulty of operation and improves work efficiency.

[0020] In summary, this utility model includes at least one of the following beneficial technical effects of the adhesive coating limiting device for filter manufacturing:

[0021] 1. The closed end of the limiting plate contacts the surface of the filter screen, allowing the limiting component to move inside the limiting plate. Through the cooperation of the sliding groove and the moving plate, the position of the limiting plate can be flexibly adjusted, and the bent limiting part is pressed against the inside of the frame. Through the clearance between the bent limiting part and the inner wall of the limiting plate, the gap formed between the filter screen and the frame is kept consistent, so that the glue gun can apply glue. This can improve production efficiency and make the glue application more uniform.

[0022] 2. The design of the waist-shaped adjustment plate and rotating protrusion allows the operator to easily adjust the position of the limit plate. By rotating the protrusion and pushing and pulling the waist-shaped adjustment plate, the spacing of the limit plate can be quickly changed to adapt to the use of filters of different specifications and improve the versatility of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 for Figure 1 Exploded view;

[0026] Figure 3 for Figure 2 A schematic diagram of the middle limiting plate.

[0027] In the diagram: 1. Limiting plate; 20. Limiting component; 3. Sliding groove;

[0028] 21. Movable plate; 22. Limiting plate; 23. Bending limiting part; 24. Adjustable fastener;

[0029] 241. Waist-shaped adjustment plate; 242. Rotating protrusion. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] Reference Figure 1-3This utility model discloses a glue-applying limiting device for filter manufacturing, comprising: a limiting plate 1 with a U-shaped cross-section; a limiting assembly 20 symmetrically slidably connected to the inner side of the limiting plate 1; the limiting assembly 20 including a movable plate 21; sliding grooves 3 symmetrically formed on the inner side of the limiting plate 1; both ends of the movable plate 21 located within the sliding grooves 3; a limiting plate 22 installed on the side of the movable plate 21 away from the limiting plate 1; a bent limiting part 23 provided at one end of the limiting plate 22; and an adjusting fastener 24 rotatably connected to the other end of the limiting plate 22; the adjusting fasteners 24 being respectively arranged facing each other; and a clearance gap formed between the bent limiting part 23 and the inner wall of the limiting plate 1. The width of the end of the movable plate 21 near the adjusting fastener 24 is smaller than the width of the sliding groove 3, and the width of the other end of the movable plate 21 is adapted to the sliding groove 3. The limiting plate 1 and its limiting component 20 are both made of aluminum alloy. The movable plate 21 and the limiting plate 22 are connected by bolts. The widths of the two ends of the movable plate 21 are different, which allows the movable plate 21 to tilt and swing in the sliding groove 3 so that the adjusting fastener 24 can fix or adjust the limiting plate 22 in the sliding groove 3. After the end of the bent limiting part 23 is adjusted to a suitable length, it is inserted into the filter frame to form a clearance gap with the limiting plate 1, so that the gap between the filter screen and the frame is consistent, so that the glue gun can apply glue.

[0033] The adjusting fastener 24 includes a waist-shaped adjusting plate 241. A rotating protrusion 242 is symmetrically connected to the side of the waist-shaped adjusting plate 241 away from the limiting plate 1. The waist-shaped adjusting plate 241 is connected to the limiting plate 22 by bolts. Because the width of the moving plate 21 near the adjusting fastener 24 is smaller than the width of the sliding groove 3, and the width of the other end of the moving plate 21 matches the sliding groove 3, the moving plate 21 can tilt and sway within the sliding groove 3. When the bending limiting part 23 is subjected to force on the inner side of the frame, the filter paper inside the filter has a certain elasticity, causing the bending limiting part 23 to move inward toward the limiting plate 1. When the plate moves, the moving plate 21 acts as a lever, and the two ends of the waist-shaped adjusting plate 241 are in contact with the inner side of the sliding groove 3 near the limiting plate 1. Since the two arc-shaped ends of the waist-shaped adjusting plate 241 are in close contact with the sliding groove 3, the limiting plate 22 can be effectively prevented from sliding. The operator can rotate the protrusion 242 with their fingers to make the two arc-shaped ends of the waist-shaped adjusting plate 241 disengage from the inner wall of the sliding groove 3 or not contact it, thereby adjusting the movement of the limiting plate 22. The spacing of the limiting plate 22 can also be quickly changed to adapt to different specifications of filters.

[0034] The bending limiting part 23 has an inclined surface at the end away from the adjusting fastener 24. The inclined surface is located away from the limiting plate 1, and the two sides of the bending limiting part 23 away from the adjusting fastener 24 are rounded. The bending limiting part 23 and the inclined surface design on the limiting plate 22 can provide a precise limiting effect when in contact with the filter. At the same time, the inclined surface helps the filter at the end of the bending limiting part 23 to smoothly enter the limiting position, reducing the force area. The rounded corner design of the bending limiting part 23 can reduce the frictional resistance between the bending limiting part 23 and the filter or other contact parts. When the filter is placed or moved to the limiting position, the rounded corner can provide a smoother contact surface, reducing the resistance and wear caused by friction.

[0035] The distance between the sliding grooves 3 is equal to the height of the waist-shaped adjusting plate 241; this allows the two arc-shaped ends of the waist-shaped adjusting plate 241 to make close contact with the inner wall of the sliding groove 3 to form a limit.

[0036] The limiting plate 1 has inclined portions at both ends, and the length of the closed end of the limiting plate 1 is greater than the length of the open end; the design of the inclined portion provides a natural guide path for the filter, making it easier for the limiting plate 1 to slide into the limiting position when the filter is placed inside.

[0037] The implementation principle of this embodiment is as follows: In use, the operator first installs the filter paper and filter screen into the filter frame in sequence. Then, the operator presses the filter screen with the closed flat end of the limiting plate 1 to form a gap between the two ends of the filter screen and the inner side of the frame. Then, the operator moves the limiting plate 22 to limit the bending limiting part 23 to form a gap between the two ends of the filter screen and the inner side of the frame. The operator also keeps the gap between the filter screen and the frame consistent through the bending angle of the limiting plate 22, so that the glue gun can apply glue. At this time, the filter paper in the filter causes the moving plate 21 to swing due to its own elasticity, so that the bending limiting part 23 moves closer to the inner side of the limiting plate 1. The waist-shaped adjusting plate 241 is offset towards the open end of the limiting plate 1, thereby preventing the limiting plate 22 from moving. After applying glue, the operator rotates the protrusion 242 with their fingers to make the two arc-shaped ends of the waist-shaped adjusting plate 241 disengage from the inner wall of the sliding groove 3 or not contact it. This allows the operator to adjust the movement of the limiting plate 22, so that the filter screen frame is glued together, improving the uniformity of glue application.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A glue-applying limiting device for filter manufacturing, characterized in that, include: A U-shaped limiting plate (1) is provided. A limiting component (20) is symmetrically slidably connected to the inner side of the limiting plate (1). The limiting component (20) includes a movable plate (21). A sliding groove (3) is symmetrically opened on the inner side of the limiting plate (1). The two ends of the movable plate (21) are respectively located in the sliding groove (3). A limiting plate (22) is installed on the side of the movable plate (21) away from the limiting plate (1). A bending limiting part (23) is provided at one end of the limiting plate (22). An adjusting fastener (24) is rotatably connected to the other end of the limiting plate (22). The adjusting fasteners (24) are respectively arranged facing each other. A clearance gap is formed between the bending limiting part (23) and the inner wall of the limiting plate (1). The width of the movable plate (21) near the adjusting fastener (24) is smaller than the width of the sliding groove (3), and the width of the other end of the movable plate (21) is adapted to the sliding groove (3).

2. The adhesive coating limiting device for filter manufacturing according to claim 1, characterized in that, The adjusting fastener (24) includes a waist-shaped adjusting plate (241), and a rotating protrusion (242) is symmetrically connected to the side of the waist-shaped adjusting plate (241) away from the limiting plate (1). The waist-shaped adjusting plate (241) is connected to the limiting plate (22) by bolts.

3. The adhesive coating limiting device for filter manufacturing according to claim 1, characterized in that, The bending limiting part (23) has an inclined surface at one end away from the adjusting fastener (24), and the inclined surface is set away from the limiting plate (1).

4. A glue-applying limiting device for filter manufacturing according to claim 1 or 3, characterized in that, The two sides of the bending limiting part (23) away from the adjusting fastener (24) are rounded.

5. The adhesive coating limiting device for filter manufacturing according to claim 1, characterized in that, The distance between the sliding grooves (3) is equal to the height of the waist-shaped adjusting plate (241).

6. The adhesive coating limiting device for filter manufacturing according to claim 1, characterized in that, The limiting plate (1) has inclined portions at both ends, and the length of the closed end of the limiting plate (1) is greater than the length of the open end.

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