Automatic collecting device for filter paper offcuts of air filter

Abstract

An automatic collecting device for filter paper offcuts of an air filter comprises a cutting machine. The pre-tightening force device comprises a roller, a fixing ring and a floater; the floater is installed below the material belt input end of the cutting machine in a sliding mode through the sliding rail. The fixing ring is arranged above the floater; the roller is arranged above the fixing ring and installed at a material belt input port of the cutting machine. An upper dead center and a lower starting point are arranged on the sliding rail, and the floater slides between the upper dead center and the lower starting point; an electromagnetic induction switch I is mounted on the upper stop point, and an electromagnetic induction switch II is mounted on the lower start point; the electromagnetic induction switch I and the electromagnetic induction switch II are both in signal connection with a controller of the cutting machine. The device is used for a paper feeding link, and in the paper feeding process, rim charges of filter paper are synchronously and automatically recycled; and meanwhile, the recycled offcut is blanked according to the fixed length and then collected, and the thread edge space is not occupied.

Description

Technical Field

[0001] The invention relates to the field of recycling and processing of edge materials in a punching process, in particular to an automatic collecting device for edge materials of filter paper of an air filter. Background Art

[0002] The manufacture of the carbon canister dust filter element requires filter paper, which is usually purchased in rolls. The production of air filters is divided into the following processes: Paper loading: Load paper rolls with a width of about 1m; Slitting: slitting into designed width; Dotting: Dotting according to the designed fold number; Origami / embossing: Shape the paper according to the designed pattern and crease size; Paper collection: The creases are collected and squeezed into shape by a collecting rake.

[0003] The width of filter paper is generally about 1 meter, and it can be cut longitudinally into multiple filter paper. Considering that the edge of the paper is not completely neat, the paper roll supplier will reserve some edge material in the width. This edge material will have a great impact in the production process: first, the edge material will be rolled into the slitting equipment, which will cause product defects and scrap; secondly, the filter paper edge material after slitting is very fluffy, which will occupy a large area on the edge of the line, affecting the workshop management, and adding special manpower to manage the edge material will cause waste. Summary of the invention

[0004] The present invention provides an automatic collection device for filter paper scraps of an air filter, which is used in the paper feeding link. During the paper feeding process, the scraps of the filter paper are automatically and synchronously recovered without causing additional impact on the main paper feeding and slitting processes. At the same time, the recovered scraps are punched out according to a fixed length and then collected without occupying the line edge space.

[0005] The technical solution to the above problem is: an automatic collection device for filter paper edge materials of an air filter, comprising a cutter, which is installed on a frame; and also comprising a preload device, which comprises a roller, a fixed ring and a float; the float is slidably installed below the material belt input end of the cutter through a sliding track; the fixed ring is arranged above the float; the roller is arranged above the fixed ring and installed at the material belt input port of the cutter; an upper dead point and a lower starting point are arranged on the sliding track, and the float slides between the upper dead point and the lower starting point; an electromagnetic induction switch I is installed on the upper dead point, and an electromagnetic induction switch II is installed on the lower starting point; the electromagnetic induction switch I and the electromagnetic induction switch II are both connected to the controller signal of the cutter.

[0006] A further technical solution is that the sliding track includes a boss.

[0007] Its further technical solution is: 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, 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.

[0008] A further technical solution is: the fixing ring is a circular ring fixed on the sliding track through a connecting arm.

[0009] A further technical solution is: the roller is installed on the cutting machine through a support rod and is located above the material belt input end of the cutting machine.

[0010] Due to the adoption of the above technical solution, the automatic collection device for filter paper edge material of an air filter of the present invention has the following beneficial effects compared with the prior art: 1. Save space during cutting (the space occupied by the edge material after shredding is reduced by 70%); 2. Standardize 5S on site (cut the scraps into pieces and put them directly into the trash can); 3. Solve the problem of product defects caused by filter paper edge materials being drawn into the equipment; 4. Wide application: This device can also be used in other similar scenarios, such as recycling of scraps during the punching process of paper, non-woven fabrics and sponges.

[0011] The preload device of the automatic collection device for filter paper edge materials of an air filter of the present invention controls the edge material pulling back speed by cooperating with the controller of the existing edge material cutting equipment, and performs punching and cutting synchronously during the pulling back process. That is, the present invention designs a floating roller device (preload device) to provide appropriate preload force for the edge material belt, tighten the material belt at any time, and perform punching and cutting synchronously.

[0012] When using this device, thread one end of the filter paper waste material through the fixed ring, float, roller, roller I, guiding clip I, and guiding clip II device, and place the material head under roller II. When the input end of the material tape stops or awaits material, the waste material is in a taut state at this time, generating a relatively large tensile force. Under the action of the tensile force, the float moves upward to reach the upper dead point. After the electromagnetic induction switch I senses the position of the float, it feeds back to the equipment control unit. To prevent the material tape from being pulled apart due to excessive pre-tightening force, the control unit outputs an instruction to pause motor I, and the cutting action stops. When the input end of the material tape is transporting normally, the float pulls the material tape downward due to gravity to reach the lower starting point. After the electromagnetic induction switch II senses the position of the float, the control unit determines that the tension on the waste material is relatively small at this time. To prevent the waste material from accumulating and being involved in downstream equipment, resulting in a malfunction, it outputs an instruction to control the start of motor I, and the cutting continues to run. Therefore, the pre-tightening force device designed in this invention solves the following problems existing in the existing waste material cutting equipment: To avoid waste of filter paper, the width of the existing reserved waste material is generally small, so it does not have very high strength and is very easy to be pulled apart, resulting in the inability to continuously and automatically recycle. Therefore, during the process of recycling waste material, it is necessary to control the pre-tightening force of traction. When the pre-tightening force is too large, the waste material will be pulled apart; when the pre-tightening force is too small, the waste material will accumulate and be involved in the paper feeder.

[0013] The following further describes the technical features of an automatic collecting device for air filter paper waste material of the present invention in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0014] Figure 1 Structural schematic of an automatic collecting device for air filter paper waste material of the present invention Figure 1 ; Figure 2 Structural schematic of an automatic collecting device for air filter paper waste material of the present invention Figure 2 ; Figure 3 Structural schematic of an automatic collecting device for air filter paper waste material of the present invention Figure 3 (Top view).

[0015] In the figure: 1 - cutting machine, 11 - guiding clip I, 12 - guiding clip II, 13 - roller I, 14 - start switch, 15 - motor I, 16 - motor II, 17 - cutting knife, 18 - roller II; Pre-tightening force device, 21 - roller, 22 - fixed ring, 23 - float, 231 - concave plate, 232 - roller shaft, 233 - slider, 24 - sliding track, 241 - convex platform, 25 - roller, 26 - connecting arm, 27 - support rod, 28 - upper dead point, 29 - lower starting point; 3 - frame; 4 - filter paper. Detailed Embodiment

[0016] As shown in Figures 1 to 3 the figure: An automatic collecting device for air filter paper edge materials, comprising a cutting machine 1 and a pre-tightening force device 2; the pre-tightening force device 2 is adapted to be installed on the cutting machine 1 and is used for the paper loading link. The pre-tightening force device 2 is used in cooperation with the cutting machine 1 to realize the automatic collection of cut paper edge materials.

[0017] The cutting machine 1 includes a controller and a start switch 14, a motor I 15, and a motor II 16 that are electrically connected to the controller respectively; the cutting machine 1 is installed on a frame 3; from the material tape input end to the material tape output end of the cutting machine 1, a roller I 13, a guiding clamp I 11, a guiding clamp II 12, a roller II 18, etc. are sequentially arranged on the body of the cutting machine 1, and a cutting knife 17 is arranged at the material tape output end. The roller I 13 plays a guiding role and makes it smoother to pull the material tape at the corner. The rotating shaft of the motor I 15 is connected to the roller II 18. When the motor I 15 operates, it automatically pulls the material head forward intermittently to achieve the effect of paper feeding. The motor II 16 drives the cutting knife 17 to work through a cam. The controller controls the start and stop of the motor I 15 and the motor II 16. To simplify the equipment, a belt is used to connect the rotating shafts of the motor I 15 and the motor II 16. The motor I 15 is controlled by the equipment control unit (i.e., the controller of the cutting machine 1). When it starts, it drives the motor II 16 to start. For example: the motor I 15 rotates indirectly (such as rotating for 1 second and stopping for 0.2 seconds), the material tape is pulled once and then stops once, while the motor II 16 rotates continuously and drives the cutting knife to cut the material tape under the knife up and down through a cam. The start switch 14 is arranged on the control panel of the cutting machine 1.

[0018] The pre-tightening force device 2 includes a roller 21, a fixing ring 22, and a float 23.

[0019] The float 23 is slidably installed below the material tape input end of the cutting machine 1 through a sliding track 24; the float 23 can move up and down freely on the sliding track 24. The fixing ring 22 is arranged above the float 23; the fixing ring 22 can be a circular ring and is fixed on the sliding track 24 through a connecting arm 26. An upper stop point 28 and a lower starting point 29 are arranged on the sliding track 24. The float 23 slides between the upper stop point 28 and the lower starting point 29; an electromagnetic induction switch I is installed on the upper stop point 28, and an electromagnetic induction switch II is installed on the lower starting point 29; both the electromagnetic induction switch I and the electromagnetic induction switch II are signal-connected to the controller of the cutting machine. That is, an electromagnetic induction switch is designed at each of the upper and lower limit points of the sliding track 24. When the float 23 approaches the electromagnetic induction switch, the corresponding information is transmitted to the equipment control unit (i.e., the controller of the cutting machine 1).

[0020] The roller 21 is arranged above the fixing ring 22 and is installed at the material tape input port of the cutting machine 1; the roller 21 is installed on the cutting machine 1 through a support rod 27 and is located above the material tape input end of the cutting machine.

[0021] In this embodiment, in order to simplify the device, the sliding track 24 is a boss 241.

[0022] The float 23 is a concave plate 231. A roller 232 is rotatably connected to the left and right side walls of the inner surface of the concave plate 231. A slider 233 is disposed on the outer surface of the bottom plate of the concave plate 231. The slider 233 is sleeved on the boss 241 and is slidably connected to the sliding track 24. A floating roller device is designed by using the float 23 and the sliding track 24 to provide a suitable pre-tightening force for the edge strip.

[0023] The usage method of the automatic collecting device for the edge strip of the air filter paper: Start the power supply of the electric cabinet, start the start switch 14 of the cutting machine 1, and the cutting machine 1 starts continuous automatic operation.

[0024] Specifically: Insert one end of the edge strip of the filter paper 4 into the fixing ring 22, sequentially bypass the bottom of the roller 232 of the float 23 and above the roller 21, then pass through the roller I 13, the guiding clips 11, and the guiding clip 12 device, place the strip head under the roller II 18, press the start switch 14, and the motor I 15 operates to automatically pull the strip head forward intermittently (to achieve the effect of paper feeding). The cam of the motor II drives the cutting knife 22 to automatically operate, and cuts the pulled strip according to a fixed length.

[0025] The working principle of the pre-tightening force device 2: The float 23 is installed on a sliding track 24 and can move up and down freely. Electromagnetic induction switches are designed at the upper and lower limit points of the sliding track 24. When the float 23 approaches the electromagnetic induction switch, the corresponding information is transmitted to the device control unit.

[0026] When the input end of the strip stops or waits for material, at this time the edge strip is in a taut state and the generated tension is relatively large. The float 23 moves upward under the action of the tension and reaches the upper dead point 28. After the electromagnetic induction switch I senses the position of the float, it feeds back to the device control unit. To prevent the pre-tightening force from being too large and breaking the strip, the control unit outputs an instruction to pause the motor I 15 and the cutting action stops.

[0027] When the input end of the strip is normally conveyed, the float 23 pulls the strip downward due to gravity and reaches the lower 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 strip is relatively small at this time. To prevent the edge strip from accumulating and being involved in downstream equipment and causing a failure, it outputs an instruction to control the motor I 15 to start working and the cutting continues to run.

[0028] The sliding resistance and gravity of the float 23 are calibrated to match the breaking strength of the scrap material. If the float 23 is too light, it cannot slide to the lower dead point under the action of tension, and the control unit cannot input the start information to the cutting machine; if the float 23 is too heavy, the scrap material tension cannot lift it to the upper dead point, and the control unit cannot output the stop information.

[0029] Through the above mechanical principle, the purpose of fast paper feeding and fast cutting, and stopping cutting when the paper feeding stops is achieved. This automatic collecting device for the edge material of the air filter paper can cut scraps with a length of 2-200 mm according to requirements.

[0030] The parts not involved in the present invention are the same as or can be implemented by the prior art. The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to the records of the above embodiments. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the patent protection scope determined by the claims submitted for the present invention.

Claims

1. An automatic collecting device for the edge materials of an air filter paper, comprising a cutting machine, and the cutting machine is installed on a frame; characterized in that: It further includes a pre-tightening force device, and the pre-tightening force device includes a roller, a fixing ring and a float; the float is slidably mounted below the tape input end of the cutting machine through a sliding track; the fixing ring is arranged above the float; the roller is arranged above the fixing ring and is installed at the tape input port of the cutting machine; the sliding track is provided with an upper stop point and a lower starting point, and the float slides between the upper stop point and the lower starting point; An electromagnetic induction switch Ⅰ is installed at the upper stop point, and an electromagnetic induction switch Ⅱ is installed at the lower starting point; Both the electromagnetic induction switch Ⅰ and the electromagnetic induction switch Ⅱ are signal-connected to the controller of the cutting machine.

2. An automatic collecting device for air filter paper edge materials according to claim 1, characterized in that: The sliding track includes a convex platform.

3. The automatic collecting device for the edge material of the air filter paper according to claim 2, characterized in that: The float is a concave plate, and a roller is rotatably connected to the common left and right side walls of the inner surface of the concave plate. A slider is arranged on the outer surface of the bottom plate of the concave plate, and the slider is sleeved on the convex platform and is slidably connected to the sliding track.

4. An automatic collecting device for the edge materials of an air filter paper according to claim 1, characterized in that: The fixing ring is a circular ring and is fixed to the sliding track through a connecting arm.

5. An automatic collecting device for the edge materials of the air filter paper according to claim 1, characterized in that: The roller is installed on the cutting machine through a support rod and is located above the tape input end of the cutting machine.

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