Automatic air filter paper edge material collecting device

Abstract

An automatic collection device for filter paper edge material of an air filter includes a cutting machine and a pre-tensioning device, which comprises a roller, a fixing ring, and a float. The float is slidably mounted below the feed tape input end of the cutting machine via a sliding track. The fixing ring is positioned above the float. The roller is positioned above the fixing ring and mounted at the feed tape input port of the cutting machine. The sliding track has an upper stop point and a lower start point, and the float slides between the upper stop point and the lower start point. An electromagnetic induction switch I is installed at the upper stop point, and an electromagnetic induction switch II is installed at the lower start point. Both electromagnetic induction switches I and II are connected to the controller signal of the cutting machine. This device is used in the paper feeding process, during which the filter paper edge material is synchronously and automatically collected. Simultaneously, the collected edge material is cut to a fixed length and then collected, without occupying edge space.

Description

Technical Field

[0001] This utility model relates to the field of edge material recycling during the punching process, and in particular to an automatic collection device for air filter paper edge material. Background Technology

[0002] The manufacture of carbon canister dust filter elements requires filter paper, which is typically purchased in rolls. The production of air filters involves the following processes:

[0003] Loading paper: Load a paper roll with a width of about 1m;

[0004] Slicing: Slicing into the designed width;

[0005] Marking dots: Mark dots according to the number of folds in the design;

[0006] Origami / embossing: Shape the paper according to the designed pattern and the size of the creases;

[0007] Paper collection: The creases are gathered up and compressed into shape using a collection rake.

[0008] Filter paper is typically about 1 meter wide and can be longitudinally cut into multiple filter cartridges. Considering that the edges of the paper rolls are not perfectly neat, suppliers usually leave a small amount of edge material in the width. This edge material has a significant impact on the production process: firstly, if it gets caught in the slitting equipment, it can lead to product defects and scrap; secondly, because the edge material after slitting is very fluffy, it occupies a large area along the edges, affecting workshop management, and requiring additional personnel to manage it would be wasteful. Summary of the Invention

[0009] This utility model provides an automatic collection device for filter paper edge material of air filters, which is used in the paper feeding process. During the paper feeding process, the edge material of the filter paper is automatically collected synchronously without causing additional impact on the main paper feeding and cutting processes. At the same time, the collected edge material is punched to a fixed length and then collected, without occupying the edge space.

[0010] The technical solution to the above problem is: an automatic collection device for air filter paper edge material, including a cutting machine mounted on a frame; and a pre-tensioning device comprising a roller, a fixing ring, and a float; the float is slidably mounted below the material input end of the cutting machine via a sliding track; the fixing ring is positioned above the float; the roller is positioned above the fixing ring and mounted at the material input port of the cutting machine; the sliding track has an upper stop point and a lower start point, and the float slides between the upper stop point and the lower start point; an electromagnetic induction switch I is installed at the upper stop point, and an electromagnetic induction switch II is installed at the lower start point; both electromagnetic induction switches I and II are connected to the controller signal of the cutting machine.

[0011] A further technical solution is that the sliding track includes a boss.

[0012] The further technical solution is as follows: the float is a concave plate, the left and right walls of the inner surface of the concave plate are rotatably connected to a roller, and a slider is provided on the outer surface of the bottom plate of the concave plate. The slider is sleeved on the boss and slidably connected to the sliding track.

[0013] A further technical solution is that the fixing ring is a circular ring, which is fixed on the sliding track by a connecting arm.

[0014] A further technical solution is that the roller is mounted on the cutting machine via a support rod, located above the material input end of the cutting machine.

[0015] By adopting the above technical solution, the automatic collection device for air filter paper edge material of this utility model has the following advantages compared with the prior art:

[0016] 1. Saves space during cutting (the space occupied by the edge material is reduced by 70% after it is shredded);

[0017] 2. Standardize the 5S on-site practices (shredded scraps should be placed directly into the trash can);

[0018] 3. Solve the problem of product defects caused by filter paper edge material being rolled into the equipment;

[0019] 4. Wide range of applications: This device can also be applied to other similar scenarios, such as the recycling of scrap materials during the die-cutting process of paper, non-woven fabric, and sponge.

[0020] The pre-tightening device of the automatic collection device for air filter paper edge material of this utility model controls the edge material pull-back speed in conjunction with the controller of the existing edge material cutting equipment. During the pull-back process, punching is performed simultaneously. That is, this utility model designs a floating roller device (pre-tightening device) to provide appropriate pre-tightening force to the edge material strip, tighten the strip at any time, and punch simultaneously.

[0021] When using this device, insert one end of the filter paper edge material into the fixing ring, float, roller, roller I, guide clamp I, and guide clamp II. Place the material head under roller II. When the feed belt stops or is waiting for material, the edge material is taut, generating significant tension. The float moves upward under this tension, reaching the upper stop point. Electromagnetic induction switch I senses the float's position and sends feedback to the equipment control unit. To prevent excessive preload from breaking the feed belt, the control unit outputs a command to pause motor I, stopping the cutting operation. When the feed belt is being conveyed normally, the float pulls the feed belt downward due to gravity, reaching the lower starting point. Electromagnetic induction switch II senses the float's position, and the control unit determines that the edge material tension is low. To prevent edge material from accumulating and getting caught in downstream equipment, causing malfunctions, the control unit outputs a command to start motor I, allowing the cutting operation to continue. Therefore, the pre-tensioning device designed in this utility model solves the following problems existing in edge cutting equipment: To avoid filter paper waste, the width of the existing reserved edge material is generally small, thus it does not have high strength and is very easy to break, resulting in the inability to continuously and automatically recycle the edge material. Therefore, it is necessary to control the traction pre-tensioning force during the edge material recycling process. If the pre-tensioning force is too large, the edge material will break; if the pre-tensioning force is too small, the edge material will accumulate and be wound into the paper feeder.

[0022] The technical features of an automatic air filter paper edge collection device of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an automatic air filter paper edge collection device according to the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of an automatic air filter paper edge collection device according to the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of an automatic air filter paper edge collection device according to the present invention. Figure 3 (Top view).

[0026] In the picture:

[0027] 1-Cut machine, 11-Guide clamp I, 12-Guide clamp II, 13-Roller I, 14-Start switch, 15-Motor I, 16-Motor II, 17-Cut blade, 18-Roller II;

[0028] Pre-tensioning device, 21-roller, 22-fixed ring, 23-float, 231-concave plate, 232-roller, 233-slider, 24-sliding track, 241-bore, 25-roller, 26-connecting arm, 27-support rod, 28-upper stop point, 29-lower start point;

[0029] 3-Frame; 4-Filter paper. Detailed Implementation

[0030] like Figures 1 to 3 As shown: An automatic collection device for air filter paper edge material includes a cutting machine 1 and a pre-tensioning device 2; the pre-tensioning device 2 is suitable for being installed on the cutting machine 1 for the paper feeding process. The pre-tensioning device 2 works in conjunction with the cutting machine 1 to achieve automatic collection of paper edge material.

[0031] The cutting machine 1 includes a controller and a start switch 14, motor I 15, and motor II 16, all electrically connected to the controller. The cutting machine 1 is mounted on a frame 3. From the material input end to the material output end of the cutting machine 1, roller I 13, guide clamp I 11, guide clamp II 12, and roller II 18 are sequentially arranged on the machine body. A cutting blade 17 is located at the material output end. Roller I 13 serves as a guide and facilitates smoother material feeding at corners. The shaft of motor I 15 is connected to roller II 18. The operation of motor I 15 intermittently pulls the material head forward, achieving the effect of feeding paper. Motor II 16 drives the cutting blade 17 via a cam. The controller controls the start and stop of motors I 15 and II 16. To simplify the equipment, the shafts of motors I 15 and II 16 are connected by a belt. Motor I 15 is controlled by the equipment control unit (i.e., the controller of the cutting machine 1), and its start-up drives motor II 16 to start. For example, motor I 15 rotates intermittently (e.g., it rotates for 1 second and stops for 0.2 seconds), pulling the material strip intermittently, while motor II 16 rotates continuously, driving the cutter up and down via a cam to cut the material strip pulled under the cutter. The start switch 14 is located on the control panel of the cutting machine 1.

[0032] The preload device 2 includes a roller 21, a fixed ring 22, and a float 23.

[0033] The float 23 is slidably mounted below the material input end of the cutting machine 1 via a sliding rail 24; the float 23 can move freely up and down on the sliding rail 24. A fixing ring 22 is positioned above the float 23; the fixing ring 22 can be a circular ring, fixed to the sliding rail 24 via a connecting arm 26. The sliding rail 24 has an upper stop point 28 and a lower start point 29, and the float 23 slides between the upper stop point 28 and the lower start point 29; an electromagnetic induction switch I is installed at the upper stop point 28, and an electromagnetic induction switch II is installed at the lower start point 29; both electromagnetic induction switches I and II are connected to the controller signal of the cutting machine. That is, each of the upper and lower limit points of the sliding rail 24 is designed with an electromagnetic induction switch; when the float 23 approaches an electromagnetic induction switch, the corresponding information is transmitted to the equipment control unit (i.e., the controller of the cutting machine 1).

[0034] The roller 21 is positioned above the fixing ring 22 and installed at the material input port of the cutting machine 1; the roller 21 is mounted on the cutting machine 1 via a support rod 27 and is located above the material input end of the cutting machine.

[0035] In this embodiment, to simplify the device, the sliding track 24 is a boss 241.

[0036] The float 23 is a concave plate 231. A roller 232 is rotatably connected to the left and right walls of the inner surface of the concave plate 231. A slider 233 is provided on the outer surface of the bottom plate of the concave plate 231. The slider 233 is sleeved on the boss 241 and slidably connected to the sliding rail 24. The float 23 and the sliding rail 24 are designed to form a floating roller device to provide suitable preload to the edge material strip.

[0037] How to use an automatic air filter paper edge collection device:

[0038] Turn on the power supply to the electrical cabinet box, turn on the start switch 14 of the cutting machine 1, and the cutting machine 1 will start to work continuously and automatically.

[0039] Specifically, the filter paper is inserted into the fixing ring 22 at one end, passing around the bottom of the roller 232 of the float 23 and the top of the roller 21 in sequence, and then passing through the roller I 13, guide clamp 11, and guide clamp 12 device. The material head is placed under the roller II 18. The start switch 14 is pressed, and the motor I 15 is activated to automatically and intermittently pull the material head forward (to achieve the effect of feeding paper). The cam of the motor II drives the cutter 22 to work automatically and cut the pulled material strip to a fixed length.

[0040] Working principle of preload device 2:

[0041] The float 23 is mounted on a sliding rail 24 and can move freely up and down. An electromagnetic induction switch is designed at each of the upper and lower limit points of the sliding rail 24. When the float 23 approaches the electromagnetic induction switch, the corresponding information is transmitted to the equipment control unit.

[0042] When the material belt input end stops or is waiting for material, the edge material is in a taut state, generating a large tension. Under the action of the tension, the float 23 moves upward and reaches the upper stop point 28. After the electromagnetic induction switch I senses the position of the float, it feeds back to the equipment control unit. In order to prevent the material belt from breaking due to excessive pretension, the control unit outputs a command to pause the motor I 15 and stop the cutting action.

[0043] When the material belt is being conveyed normally at the input end, the float 23 pulls the material belt downwards due to gravity and reaches the next starting point 29. After the electromagnetic induction switch II senses the position of the float, the control unit determines that the tension on the edge material is small at this time. In order to prevent the edge material from accumulating and getting into the downstream equipment, causing a malfunction, the control unit outputs a command to control the motor I 15 to start working, and the cutting continues to run.

[0044] The sliding resistance and gravity of float 23 are adjusted to match the breaking strength of the edge material. If float 23 is too light, it cannot slide to the lower stop point under tension, and the control unit cannot input the start information to the cutting machine; if float 23 is too heavy, the edge material tension cannot lift it to the upper stop point, and the control unit cannot output the stop information.

[0045] Based on the above mechanical principles, the device achieves the goal of fast paper feeding and fast cutting, and stops cutting when paper feeding stops. This automatic air filter paper edge collection device can cut scraps 2-200mm in length as needed.

[0046] All parts not covered in this utility model are the same as or can be implemented using existing technology. The above description is a further detailed explanation of this utility model in conjunction with specific preferred embodiments. It should not be construed that the specific implementation of this utility model is limited to the descriptions of the above embodiments. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. An automatic collection device for air filter paper edge material, comprising a cutting machine mounted on a frame; characterized in that: It also includes a pre-tensioning device, which comprises a roller, a fixed ring, and a float; the float is slidably mounted below the material input end of the cutting machine via a sliding track; the fixed ring is positioned above the float; the roller is positioned above the fixed ring and mounted at the material input port of the cutting machine; the sliding track is provided with an upper stop point and a lower start point, and the float slides between the upper stop point and the lower start point; An electromagnetic induction switch I is installed at the upper stop point, and an electromagnetic induction switch II is installed at the lower start point; Both electromagnetic induction switch I and electromagnetic induction switch II are connected to the controller signal of the cutting machine.

2. The automatic collection device for air filter paper edge material according to claim 1, characterized in that: The sliding track includes a boss.

3. The automatic collection device for air filter paper edge material according to claim 2, characterized in that: The float is a concave plate. The left and right walls of the inner surface of the concave plate are rotatably connected to a roller. The outer surface of the bottom plate of the concave plate is provided with a slider, which is sleeved on the boss and slidably connected to the sliding track.

4. The automatic collection device for air filter paper edge material according to claim 1, characterized in that: The fixing ring is a circular ring, which is fixed to the sliding track by a connecting arm.

5. The automatic collection device for air filter paper edge material according to claim 1, characterized in that: The roller is mounted on the cutting machine via a support rod and is located above the material input end of the cutting machine.

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