Filter screen processing equipment

Abstract

The filter screen processing equipment provided by the present invention comprises a vibration plate for generating high-frequency vibration and carrying the filter screen to move forward, and a pressure wheel rotatably and movably arranged above the vibration plate, the rotation axis of the pressure wheel is parallel to the upper surface of the vibration plate, and a convex ridge including two pressure edge edges and a first spacing edge is connected to the outer wall of the pressure wheel, so that the two pressure edge edges are arranged at the two ends of the pressure wheel and are arranged in a ring shape along the outer wall of the pressure wheel, and the first spacing edge is arranged between the two pressure edge edges and connected thereto, so that all the convex ridges protrude from the outer wall of the pressure wheel at the same height, and when the pressure wheel moves downward to press the filter screen and rotates, the upper and lower layers of the filter screen can be welded into one at the convex ridge through the cooperation of the convex ridge and the vibration plate, and the filter screen can be driven to move forward. The processing equipment is easy to operate, has high production efficiency, good consistency, is not prone to yellowing and blackening, has a high yield rate, and can well adapt to mass production needs.

Description

Technical Field

[0001] The invention relates to the technical field of filter screen processing, and in particular to a filter screen processing device. Background Art

[0002] With the development of technology, the proportion of axial flow fans used in electrical appliances such as hair dryers, electric fans, and vacuum cleaners on the market is getting higher and higher. The filter of this type of fan needs to be set into a mesh bag shape with one or both ends open for installation. In order to improve the convenience of processing, this type of filter is mostly made of flexible materials such as nylon. The traditional processing method is to first use a laser cutting machine to cut the filter into small pieces of a specific size, and then use a soldering iron head to heat the two ends of the small filter and weld them into one. The temperature during cutting is not easy to control, which can easily cause the filter to turn yellow. The end of the filter is prone to curling during hot welding, causing dimensional deviation. The thickness change caused by curling can also easily cause the filter to be blackened. The operation is inconvenient, the production efficiency is low, the consistency is poor, and the defective rate is high. It can only be barely suitable for small sample trial production and cannot meet the needs of mass production. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a filter screen processing equipment which is easy to operate, has high production efficiency, good consistency, high yield rate and can adapt to mass production needs.

[0004] To achieve the above object, the technical solution provided by the present invention is a filter screen processing device, comprising:

[0005] A vibration plate, the vibration plate is used to generate high-frequency vibration and carry the filter screen to move forward. Specifically, the vibration plate is connected to the ultrasonic welding machine and acts as a welding head of the ultrasonic welding machine;

[0006] A pressing wheel, the pressing wheel is rotatably and movably disposed above the vibration plate, and the rotation axis of the pressing wheel is parallel to the upper surface of the vibration plate;

[0007] A convex ridge is connected to the outer wall of the pressure wheel, and the convex ridge includes a pressure edge ridge and a first spacing ridge. There are two pressure edge ridges, and the two pressure edge ridges are arranged at the two ends of the pressure wheel and are arranged in a ring shape along the outer wall. The first spacing ridge is arranged between the two pressure edge ridges and connected to the pressure edge ridge. The height of all the convex ridges protruding from the outer wall is equal. When the pressure wheel moves downward to press the filter screen and rotates, the convex ridges cooperate with the vibration plate to weld the upper and lower layers of the filter screen into one at the convex ridges, and drive the filter screen to move forward.

[0008] Preferably, the cross section of the ridge is rectangular, the ridge width is 0.5-2 mm, and the height of the ridge protruding from the outer wall is 0.5-2 mm.

[0009] Further preferably, two corners of the convex edge away from the pressing wheel are provided with rounded chamfers.

[0010] Preferably, the plane where the edge pressing edge is located is perpendicular to the rotation axis of the pressing wheel, and the first spacing edge is vertically connected to the edge pressing edge.

[0011] Preferably, the convex edge also includes a trimming edge, and there are two trimming edges. The two trimming edges are arranged close to the end face of the pressing wheel and are located on the outside of the trimming edge. The trimming edge is composed of a plurality of parallel and spaced-apart bevel teeth, and all of the bevel teeth are distributed in a circular array along the rotation axis of the pressing wheel.

[0012] Further preferably, the oblique teeth of the two trimming edges have opposite inclination directions and the same inclination angles.

[0013] Preferably, the convex ridge also includes a second spacing ridge, which is arranged in the middle of the pressing wheel and is arranged in a ring shape. The plane where the second spacing ridge is located is perpendicular to the rotation axis of the pressing wheel, and the second spacing ridge divides the first spacing ridge into two sections.

[0014] Further preferably, the two sections of the first spacing edges are staggered.

[0015] Preferably, there are a plurality of the first spacing edges, and the spacings between adjacent first spacing edges in the circumferential direction of the pressing wheel are equal.

[0016] Preferably, a sprocket is provided on one end surface of the pressure wheel, and a chain rotating at a constant speed is meshed on the sprocket.

[0017] Further preferably, the filter screen processing equipment also includes a traction roller and a pressure roller which is movably arranged above the traction roller up and down, the highest point of the traction roller and the upper surface of the vibration plate are located in the same plane, the filter screen passing through the vibration plate passes between the traction roller and the pressure roller, and when the pressure roller moves downward to press the filter screen, the traction roller can drive the filter screen to move forward.

[0018] Further preferably, the traction roller and the vibration plate are arranged on the same mounting plate, the upper surface of the mounting plate is lower than the highest point of the traction roller and the upper surface of the vibration plate, and a guide plate opened in an eight-shaped shape is provided on the mounting plate, and the guide plate, the vibration plate and the traction roller are arranged in sequence along the traveling direction of the filter net.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] The filter processing equipment provided by the present invention comprises a vibration plate for generating high-frequency vibration and carrying the filter to move forward, and a pressure wheel rotatably and movably arranged above the vibration plate, wherein the rotation axis of the pressure wheel is parallel to the upper surface of the vibration plate, and a convex ridge is connected to the outer wall of the pressure wheel, so that the convex ridge includes two pressure edge ridges and a first spacing ridge, and the two pressure edge ridges are arranged at the two ends of the pressure wheel and are arranged in a ring shape along the outer wall of the pressure wheel, and the first spacing ridge is arranged between the two pressure edge ridges and connected thereto, so that all the convex ridges protrude from the outer wall of the pressure wheel at the same height, and when the pressure wheel moves downward to press the filter and rotates, the upper and lower layers of the filter can be moved on the convex ridges through the cooperation between the convex ridges and the vibration plate. The processing equipment integrates the cutting action and the welding action into one, and is easy to operate. After the processing is completed, you only need to tear the welding marks at the first interval edge by hand to get a separate mesh bag, and then tear one side or both sides of the edge along the welding marks to get a mesh bag-shaped filter that is easy to assemble. It adopts assembly line production, reduces the number of personnel by 50%, and increases the production capacity by more than 200%. It has high production efficiency, good consistency, is not prone to yellowing and blackening, and has a high yield rate. Compared with the existing cutting and hot welding process, the yield rate can be increased from less than 80% to more than 98%, which can well adapt to the needs of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view schematic diagram of a preferred embodiment of the present invention.

[0022] Figure 2 yes Figure 1 Enlarged schematic cross-sectional view along the AA direction.

[0023] Figure 3 yes Figure 1 Enlarged schematic cross-sectional view along the BB direction.

[0024] Figure 4 yes Figure 1 An enlarged schematic diagram of the expanded ridges on the middle pressure wheel.

[0025] Figure 5 yes Figure 1 An enlarged schematic cross-sectional view of the medium-pressure edge.

[0026] Among them: 10. vibration plate; 11. ultrasonic welding machine; 20. pressure wheel; 21. convex edge; 211. edge pressing edge; 212. first spacing edge; 213. trimming edge; 214. oblique teeth; 215. second spacing edge; 22. round chamfer; 23. sprocket; 30. traction roller; 31. pressure roller; 40. mounting plate; 41. guide plate. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0028] The filter screen of the present invention is Figure 1 Moving in a bottom-up direction.

[0029] like Figures 1 to 5 As shown, the filter screen processing equipment provided by the present invention comprises: a vibration plate 10 and a pressure wheel 20, wherein the vibration plate 10 is used to generate high-frequency vibration and carry the filter screen to move forward, specifically, the vibration plate 10 is connected to an ultrasonic welding machine 11 and serves as a welding head of the ultrasonic welding machine 11; the pressure wheel 20 is rotatably and movably arranged above the vibration plate 10, and the rotation axis of the pressure wheel 20 is parallel to the upper surface of the vibration plate 10; a convex ridge 21 is connected to the outer wall of the pressure wheel 20, and the convex ridge 21 includes a pressing edge ridge 211 and a first spacing ridge 212, and the pressing edge ridge 211 is connected to the outer wall of the pressure wheel 20. 11 has two convex edges 211, which are arranged at the two ends of the pressing wheel 20 and are arranged in a ring shape along the outer wall of the pressing wheel 20. The plane where the convex edges 211 are located is perpendicular to the rotation axis of the pressing wheel 20. The first spacing edge 212 is arranged between the two convex edges 211 and is vertically connected to the convex edges 211. The heights of all convex edges 21 protruding from the outer wall of the pressing wheel 20 are equal. When the pressing wheel 20 moves downward to press the filter screen and rotates, the convex edges 20 cooperate with the vibration plate 10 to weld the upper and lower layers of the filter screen into one at the convex edges 20, and drive the filter screen to move forward.

[0030] The advantage of this arrangement is that it can integrate the cutting action and the welding action into one, and is easy to operate. After the processing is completed, you only need to tear off the welding marks at the first interval edge by hand to obtain a separate mesh bag, and then tear off one side or both sides of the mesh bag along the welding marks to obtain a mesh bag-shaped filter that is easy to assemble. It adopts assembly line production, reduces the number of personnel by 50%, and increases the production capacity by more than 200%. The production efficiency is high, and the compression welding method is adopted. There is no end curling phenomenon, the size is accurate, and the consistency is good. Through high-frequency vibration friction welding, it is not easy to produce yellowing and blackening, and the yield rate is high. Compared with the existing cutting and hot welding process, the yield rate can be increased from less than 80% to more than 98%, which can well meet the needs of mass production.

[0031] The cross-sectional shape and size of the ridge 21 will affect the welding effects such as the firmness and ease of tearing of the filter at the ridge 21, as well as the utilization efficiency of the raw materials of the filter. In the present embodiment, the cross-sectional shape of the ridge 21 is rectangular, and the two corners of the ridge 21 away from the pressure wheel 20 are provided with rounded chamfers 22. The size of the ridge 21 is preferably: ridge width 0.5-2mm, ridge height (the height of the ridge protruding from the outer wall) 0.5-2mm; in the present embodiment, the ridge width of the ridge 21 is 1.5mm, and the ridge height is 1mm.

[0032] In order to optimize the edge pressing welding effect at the edge pressing edge 211 and ensure that the edge pressing edge 211 maintains a certain distance from the edge of the filter screen, in the present embodiment, the convex edge 21 also includes a trimming edge 213. There are two trimming edges 213. The two trimming edges 213 are arranged close to the end face of the pressing wheel 20 and are located on the outside of the edge pressing edge 211. The trimming edges 213 are composed of a plurality of parallel and spaced bevel teeth 214. All the bevel teeth 214 are distributed in a circular array along the rotation axis of the pressing wheel, and the bevel teeth 214 of the two trimming edges 213 are inclined in opposite directions and at the same angle. Such an arrangement can also ensure that the force on both sides of the filter screen is uniform when the filter screen is driven to move, thereby avoiding the phenomenon of the filter screen running off track and being pulled and deformed. In the present embodiment, the inclination angle of the bevel teeth 214 (the angle between the bevel teeth 214 and the rotation axis of the pressing wheel 20) is 45 degrees.

[0033] To further improve production efficiency, in this embodiment, the width of the pressing wheel 20 is greater than twice the width of the finished filter screen so that two rows can be processed at the same time. At the same time, the convex rib 21 also includes a second spacing rib 215, which is arranged in the middle of the pressing wheel 20 and is wound in a ring shape. The second spacing rib 215 is arranged in the middle of the pressing wheel 20 and is wound in a ring shape. The plane where the second spacing rib 215 is located is perpendicular to the rotation axis of the pressing wheel 20. The second spacing rib 215 divides the first spacing rib 212 into two sections. If the two sections of the first spacing rib 212 are kept on the same straight line, the welding marks of the second spacing rib 215 and the first spacing rib 212 will be cross-shaped. This shape of welding marks is very easy to tear when torn. Therefore, in this embodiment, the two sections of the first spacing rib 212 are staggered.

[0034] In order to ensure production efficiency and reduce the rotation speed of the pressing wheel 20, and improve the stability during welding, in the present embodiment, the cross-sectional circumference of the pressing wheel 20 is three times the length of the finished filter screen. At the same time, there are three first spacing edges 212, and the spacing between these three first spacing edges 212 in the circumferential direction of the pressing wheel 20 is equal. The equal spacing means that the spacing A between two adjacent first spacing edges 212 on the same side of the second spacing edge 215 in the circumferential direction of the pressing wheel 20 is equal, and the spacing B between two adjacent first spacing edges 212 on both sides of the second spacing edge 215 in the axial direction of the pressing wheel 20 is equal, and A is equal to B. The advantage of such a setting is that when tearing, the filter screens on both sides are ensured to be evenly stressed to avoid tearing.

[0035] In this embodiment, in order to ensure that the size of the filter screen is uniform after welding, the pressure wheel 20 moves downward to press the filter screen and then keeps rotating at a uniform speed. Specifically, a sprocket 23 is provided on one end face of the pressure wheel 20, and a chain (not shown in the figure) rotating at a uniform speed is engaged on the sprocket 23.

[0036] In order to avoid the accumulation of the filter screen after welding, the filter screen processing equipment also includes a traction roller 30 and a pressure roller 31 which is movably arranged above the traction roller 30. The highest point of the traction roller 30 is located in the same plane as the upper surface of the vibration plate 10. The filter screen passing through the vibration plate 10 passes between the traction roller 30 and the pressure roller 31. When the pressure roller 31 moves downward to press the filter screen, the traction roller 30 can drive the filter screen to move forward. Specifically, the traction roller 30 and the vibration plate 10 are arranged on the same mounting plate 40. The upper surface of the mounting plate 40 is lower than the highest point of the traction roller 30 and the upper surface of the vibration plate 10. The upper surface of the vibration plate 10 is arranged in this way. The advantage is that the rotation speed of the traction roller 30 can be easily adjusted by the tension of the filter screen between the vibration plate 10 and the traction roller 30 to match the rotation speed of the pressure wheel 20. This can avoid the accumulation of the filter screen after welding and avoid slipping between the pressure wheel 20 and the filter screen due to excessive traction speed, thereby ensuring the welding effect. To facilitate feeding, a guide plate 41 opened in an eight-shaped shape is also provided on the mounting plate 40. The guide plate 41, the vibration plate 10, and the traction roller 30 are arranged in sequence along the traveling direction of the filter screen.

[0037] It should be noted that the up and down movement of the pressing wheel 20 and the pressing roller 31 can be achieved by using existing technologies such as a pressing rod and a cylinder, which will not be described in detail here.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter screen processing device, comprising: A vibration plate, the vibration plate is used to generate high-frequency vibration and carry the filter screen to move; A pressing wheel, the pressing wheel is rotatably and movably disposed above the vibration plate, and the rotation axis of the pressing wheel is parallel to the upper surface of the vibration plate; Features: The outer wall of the pressure wheel is connected with convex ridges, the convex ridges include a pressure edge ridge and a first spacing ridge, there are two pressure edge ridges, the two pressure edge ridges are arranged at the two ends of the pressure wheel and are arranged in a ring along the outer wall, the first spacing ridge is arranged between the two pressure edge ridges and connected to the pressure edge ridges, all the convex ridges protrude from the outer wall at the same height, when the pressure wheel moves downward to press the filter screen and rotates, the convex ridges cooperate with the vibration plate to weld the upper and lower layers of the filter screen into one at the convex ridges, and drive the filter screen to move forward; The plane where the edge pressing edge is located is perpendicular to the rotation axis of the pressing wheel, and the first spacing edge is vertically connected to the edge pressing edge; The convex edge also includes a trimming edge, and there are two trimming edges. The two trimming edges are arranged close to the end face of the pressing wheel and are located on the outside of the trimming edge. The trimming edge is composed of a plurality of parallel and spaced-apart bevel teeth, and all of the bevel teeth are distributed in a circular array along the rotation axis of the pressing wheel; the inclination directions of the bevel teeth of the two trimming edges are opposite and the inclination angles are the same.

2. The filter screen processing equipment according to claim 1, characterized in that: The convex ridge also includes a second spacing ridge, which is arranged in the middle of the pressing wheel and is arranged in a ring shape. The plane where the second spacing ridge is located is perpendicular to the rotation axis of the pressing wheel, and the second spacing ridge divides the first spacing ridge into two sections.

3. The filter screen processing equipment according to claim 2, characterized in that: The two sections of the first spacing edges are arranged alternately.

4. The filter screen processing equipment according to claim 1, characterized in that: There are a plurality of first spacing edges, and the spacings between adjacent first spacing edges in the circumferential direction of the pressing wheel are equal.

5. The filter screen processing equipment according to claim 1, characterized in that: A sprocket is arranged on one end face of the pressure wheel, and a chain rotating at a uniform speed is meshed on the sprocket.

6. The filter screen processing equipment according to any one of claims 1 to 5, characterized in that: The filter screen processing equipment also includes a traction roller and a pressure roller which is movably arranged above the traction roller. The highest point of the traction roller is located in the same plane as the upper surface of the vibration plate. The filter screen passing through the vibration plate passes between the traction roller and the pressure roller. When the pressure roller moves downward to press the filter screen, the traction roller can drive the filter screen to move forward.

7. The filter screen processing equipment according to claim 6, characterized in that: The traction roller and the vibration plate are arranged on the same mounting plate, the upper surface of the mounting plate is lower than the highest point of the traction roller and the upper surface of the vibration plate, and a guide plate opened in an eight-shaped shape is provided on the mounting plate. The guide plate, the vibration plate and the traction roller are arranged in sequence along the travel direction of the filter screen.

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