Edge cutting device for non-woven fabric production

Abstract

The utility model relates to the technical field of cloth rough selvedge cutting, in particular to an edge cutting device for non-woven fabric production, which comprises a winding and unwinding mechanism, an edge cutting mechanism and a cutting mechanism, the cutting mechanism is arranged on one side of the cloth moving path and used for cutting burrs of the cloth; the moving mechanism is connected with the cutting mechanism and used for adjusting the cutting position of the cutting mechanism; the light-emitting module and the photosensitive element are respectively arranged on two sides of the surface of the cloth; the light-emitting module is used for emitting stable light beams penetrating through the edge area of the cloth; the photosensitive element is used for receiving transmission light signals and converting the transmission light signals into electric signals; the control unit is electrically connected with the photosensitive element and the moving mechanism and used for controlling starting and stopping of the moving mechanism according to electric signals of the photosensitive element. The edge cutting device for non-woven fabric production aims at solving the problems that in the prior art, the rejection rate of cloth edge cutting is high, and the cutting efficiency is low.

Description

Technical Field

[0001] This utility model relates to the field of fabric edge cutting technology, and more specifically, to an edge cutting device for non-woven fabric production. Background Technology

[0002] In the production of nonwoven fabrics, the edge trimming process is a crucial step in ensuring product dimensional accuracy and edge quality. Traditional edge trimming devices mostly use fixed cutting blades, relying on manual visual adjustment of the cutting position, which has the following significant drawbacks:

[0003] Insufficient dynamic cutting precision: Nonwoven fabrics are prone to lateral shift during high-speed unwinding and winding, resulting in burrs or over-cutting. In existing technologies, the cutting position adjustment is mostly achieved through mechanical limiting or offline detection, which cannot respond to the dynamic deformation of the fabric in real time, resulting in an increased scrap rate (especially for elastic or thin nonwoven fabrics).

[0004] Poor adaptability of detection methods: Some equipment attempts to introduce visual detection (such as cameras) to locate edges, but due to interference from fabric color, texture and ambient light, the edge recognition error of dark or highly reflective non-woven fabrics is large, and the image processing delay leads to limited response speed, making it difficult to meet the needs of high-speed production lines.

[0005] Based on the above problems, there is an urgent need for a nonwoven fabric edge cutting device that can accurately detect edges in real time and dynamically adjust the cutting position. Utility Model Content

[0006] The main purpose of this invention is to propose a cutting device for nonwoven fabric production, which aims to solve the problems of high scrap rate and low cutting efficiency in the existing technology.

[0007] To solve the above-mentioned technical problems, a cutting device for nonwoven fabric production is proposed, including: a winding and unwinding mechanism for driving the fabric movement;

[0008] A cutting mechanism is located on one side of the fabric movement path and is used to cut the raw edges of the fabric.

[0009] A moving mechanism, connected to the cutting mechanism, is used to adjust the cutting position of the cutting mechanism;

[0010] The light-emitting module and the photosensitive element are respectively placed on both sides of the fabric surface;

[0011] The light-emitting module is used to emit a stable light beam that penetrates the edge area of ​​the fabric;

[0012] The photosensitive element is used to receive transmitted light signals and convert them into electrical signals;

[0013] The control unit is electrically connected to the photosensitive element and the moving mechanism, and is used to control the opening and closing of the moving mechanism according to the electrical signal of the photosensitive element.

[0014] In any of the above technical solutions, further comprising:

[0015] The housing is hollow and covers the outside of the cutting mechanism. It has a notch corresponding to the position where the cutting blade of the cutting mechanism interacts with the fabric, and it also has an air inlet and an air outlet.

[0016] A fan is located near the air inlet and is used to blow air into the housing;

[0017] An external exhaust pipe is installed near the exhaust vent.

[0018] In any of the above technical solutions, further, the cutting mechanism, the moving mechanism, the light-emitting module, and the photosensitive element are all symmetrically arranged in pairs.

[0019] In any of the above technical solutions, the winding and unwinding mechanism further includes:

[0020] support;

[0021] The take-up roller is rotatably mounted on the bracket;

[0022] The unwinding roller is rotatably mounted on the bracket;

[0023] A first drive mechanism is connected to the take-up roller and is used to drive the take-up roller to rotate.

[0024] The second drive mechanism is connected to the unwinding roller and is used to drive the unwinding roller to rotate.

[0025] Several guide rollers, all rotatably mounted on the bracket, are used to adjust the direction of the fabric.

[0026] In any of the above technical solutions, the bracket is further provided with an opening slot, and the unwinding roller is detachably disposed in the opening slot;

[0027] The winding and unwinding mechanism also includes:

[0028] Two support wheels are symmetrically arranged on the bracket for contacting the unwinding roller;

[0029] The second drive mechanism includes:

[0030] A drive motor is mounted on the bracket.

[0031] The first gear is mounted on the rotating shaft of the drive motor;

[0032] The second gear is disposed on the unwinding roller and meshes with the first gear.

[0033] In any of the above technical solutions, the winding and unwinding mechanism further includes:

[0034] A cam is fixedly mounted on the unwinding roller;

[0035] The first and second rotating wheels are rotatably mounted on the bracket and respectively abut against the two sides of the cam.

[0036] The beneficial effects are:

[0037] 1. This utility model discloses an edge-cutting device for nonwoven fabric production, which combines a light-emitting module and a photosensitive element to accurately identify the location of rough edges by measuring the difference in light transmittance in the edge areas of the fabric. Compared with the traditional camera method, this technology has strong resistance to color / texture interference, and is especially suitable for dark-colored nonwoven fabrics, with a detection accuracy of ±0.1mm.

[0038] 2. The control unit analyzes electrical signals in real time and drives the moving mechanism to achieve millisecond-level dynamic adjustment of the cutting position, avoiding burr residue or overcutting and reducing scrap rate.

[0039] 3. The shell and the fan work together to collect the debris through the external exhaust pipe while cutting, reducing internal pollution, extending tool life, and extending maintenance cycle.

[0040] 4. The cutting mechanism and detection module are symmetrically set up, which can simultaneously process the rough edges on both sides of the fabric, doubling the production efficiency and avoiding tension imbalance caused by unilateral cutting.

[0041] 5. The open slot and detachable unwinding roller, along with the support wheel, enable quick replacement of the unwinding roller, reducing downtime losses; the cam and two rotating wheels form a central positioning system, which, combined with the position restriction of the unwinding roller in the open slot, ensures that the unwinding roller remains centered after installation, preventing fabric deviation; the gear transmission provides stable torque, which, together with the guide roller group, maintains uniform fabric tension and prevents wrinkles. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0043] Figure 1 This is a first-view perspective three-dimensional structural diagram of a nonwoven fabric production edge-cutting device according to an embodiment of the present invention;

[0044] Figure 2 This is a second-view perspective three-dimensional structural diagram of a nonwoven fabric production edge-cutting device according to an embodiment of this utility model;

[0045] Figure 3 This is a cross-sectional structural schematic diagram of a nonwoven fabric production edge-cutting device according to an embodiment of the present invention.

[0046] The annotations in the attached figures are explained as follows:

[0047] 1. Winding and unwinding mechanism; 101. Support; 102. Winding roller; 103. Unwinding roller; 104. First drive mechanism; 105. Second drive mechanism; 106. First guide roller; 107. Second guide roller; 108. Third guide roller; 109. Fourth guide roller; 110. Opening slot; 111. Support wheel; 112. Drive motor; 113. First gear; 114. Second gear; 115. Cam; 116. First rotating wheel; 117. Second rotating wheel;

[0048] 2. Cutting mechanism;

[0049] 3. Moving mechanism;

[0050] 4. Light-emitting module;

[0051] 5. Photosensitive element;

[0052] 6. Shell;

[0053] 7. Fan;

[0054] 8. External drainage pipe. Detailed Implementation

[0055] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0056] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0057] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0060] The following embodiments will provide a detailed description of a nonwoven fabric production edge-cutting device according to this application.

[0061] In this embodiment, as Figures 1 to 3 As shown, the nonwoven fabric production edge trimming device includes: a winding and unwinding mechanism 1, used to drive the fabric movement;

[0062] Cutting mechanism 2 is located on one side of the fabric movement path and is used to cut the raw edges of the fabric;

[0063] The moving mechanism 3 is connected to the cutting mechanism 2 and is used to adjust the cutting position of the cutting mechanism 2;

[0064] The light-emitting module 4 and the photosensitive element 5 are respectively placed on both sides of the fabric surface;

[0065] The light-emitting module 4 is used to emit a stable beam of light that penetrates the edge area of ​​the fabric;

[0066] The photosensitive element 5 is used to receive transmitted light signals and convert them into electrical signals;

[0067] The control unit (not shown in the figure) is electrically connected to the photosensitive element 5 and the moving mechanism 3, and is used to control the opening and closing of the moving mechanism 3 according to the electrical signal of the photosensitive element 5.

[0068] In this technical solution, the unwinding and winding mechanism 1 is arranged horizontally from left to right, including a support 101, an unwinding roller 103, a winding roller 102, two drive mechanisms, and multiple guide rollers. Each roller is arranged horizontally from left to right on the support 101. Under the action of the two drive mechanisms, it can drive the fabric on the unwinding roller 103 to be wound onto the winding roller 102.

[0069] The cutting mechanism 2 is a circular cutting blade driven by a servo motor, which is set on the left or right side of the fabric movement path and fixed on the slider of the moving mechanism 3. The cutting blade is set on the vertical plane along the front-to-back direction. The moving mechanism 3 is a screw slider moving mechanism 3 set horizontally in the left-to-right direction and is driven by a stepper motor.

[0070] Among the multiple guide rollers, there are two guide rollers, one in front of the other. The fabric between the two guide rollers moves horizontally backward. The light-emitting module 4 is located on the lower side of this path. The light-emitting module 4 is an array of infrared LEDs that emits a stable parallel beam of light that penetrates upward through the rough edge area of ​​the fabric. The photosensitive element 5 is a linear CCD sensor located on the upper side of this path and directly above the light-emitting module 4. It receives the transmitted light signal and converts it into an electrical signal, which is transmitted to the control unit (not shown in the figure) in real time. The control unit has a built-in PLC controller and signal processor. It processes the electrical signal of the photosensitive element 5, identifies the point of change in light transmittance, which is also the boundary between the rough edge of the fabric and the main body. The control unit generates a displacement command based on the position of the point of change to control the stepper motor of the moving mechanism 3 to rotate clockwise, thereby adjusting the left and right position of the cutting blade of the cutting mechanism 2 and adjusting the cutting depth of the cutting mechanism 2 in the left and right directions.

[0071] In this embodiment, it also includes:

[0072] The housing 6 is hollow and covers the outside of the cutting mechanism 2. It has a notch at the position where the cutting blade of the cutting mechanism 2 interacts with the fabric, and it also has an air inlet and an air outlet.

[0073] Fan 7 is located near the air inlet and is used to blow air into the housing 6;

[0074] External exhaust pipe 8 is installed near the exhaust vent.

[0075] In this technical solution, a hollow shell 6 is provided on the outer side of the cutting structure. A notch is provided at the upper left corner of the shell 6. An exhaust port and an air inlet are respectively provided on the front and rear sides of the shell 6. A fan 7 is installed on the rear side of the shell 6. An external exhaust pipe 8 is fixed on the front side of the shell 6 and a waste collector (such as a woven bag) is connected to the outside of the external exhaust pipe 8. The airflow forms a negative pressure zone to prevent debris from scattering, while cooling the cutting tool and extending its service life.

[0076] In this embodiment, the cutting mechanism 2, the moving mechanism 3, the light-emitting module 4, and the photosensitive element 5 are all symmetrically arranged in pairs.

[0077] In this technical solution, the cutting mechanism 2, the moving mechanism 3, the light-emitting module 4, and the photosensitive element 5 are all symmetrically arranged in twos, which can simultaneously process the rough edges on both sides of the fabric 200, improving efficiency by 100%.

[0078] In this embodiment, the winding and unwinding mechanism 1 includes:

[0079] Bracket 101;

[0080] The take-up roller 102 is rotatably mounted on the bracket 101;

[0081] The unwinding roller 103 is rotatably mounted on the bracket 101;

[0082] The first drive mechanism 104 is connected to the take-up roller 102 and is used to drive the take-up roller 102 to rotate.

[0083] The second drive mechanism 105 is connected to the unwinding roller 103 and is used to drive the unwinding roller 103 to rotate.

[0084] Several guide rollers are rotatably mounted on the bracket 101 to adjust the direction of the fabric.

[0085] In this technical solution, the bracket 101 includes two symmetrical support plates that are vertically aligned front to back and are fixedly installed. Four guide rollers are provided, named first guide roller 106, second guide roller 107, third guide roller 108, and fourth guide roller 109. The second guide roller 107 is positioned slightly above the front to back, immediately below which is the unwinding roller 103. Below the unwinding roller 103 is the take-up roller 102. The first guide roller 106 is located below and behind the unwinding roller 103. The third guide roller 108 is positioned directly behind the second guide roller 107, and the fourth guide roller 109 is positioned directly below the third guide roller 108.

[0086] The first drive mechanism 104 and the second drive mechanism 105 both include a drive motor 112, which is located on the right side of the bracket 101 and is connected to the take-up roller 102 and the unwind roller 103 respectively via a coupling.

[0087] It is worth mentioning that by setting the first guide roller 106 at the rear and lower part of the unwinding roller 103, combined with the restriction of the opening slot 110, a downward pulling force can be provided to the unwinding roller 103, which can improve the stability of the unwinding roller 103 during rotation and facilitate the quick replacement of the unwinding roller 103 in the future.

[0088] In this embodiment, the bracket 101 is provided with an opening slot 110, and the unwinding roller 103 is detachably disposed in the opening slot 110;

[0089] The winding and unwinding mechanism 1 also includes:

[0090] Two support wheels 111 are symmetrically arranged on the bracket 101 for contacting the unwinding roller 103;

[0091] The second drive mechanism 105 includes:

[0092] The drive motor 112 is mounted on the bracket 101;

[0093] The first gear 113 is mounted on the rotating shaft of the drive motor 112;

[0094] The second gear 114 is mounted on the unwinding roller 103 and meshes with the first gear 113.

[0095] In this technical solution, the opening slot 110 is set on the front side of the support plate of the bracket 101, and is arranged in a zigzag shape. The zigzag shape includes a horizontal section extending backward and a vertical section extending downward. The width is adapted to the shaft diameter of the unwinding roller 103. When the unwinding roller 103 is placed in the opening slot 110, it automatically moves to a position near the bottom of the vertical section. At the same time, the opening slot 110 limits the unwinding roller 103 in the front and back directions.

[0096] Two support wheels 111 are symmetrically arranged one in front of the other along the opening groove 110 of the vertical section, and both can rotate freely on the inner side of the support plate. The unwinding roller 103 is provided with a bearing corresponding to the position of the support wheels 111.

[0097] The drive motor 112 is a variable frequency motor. The drive motor 112 is fixed on the outside of the support plate, and its rotation axis extends inward to the inside of the bracket 101. The first gear 113 is fixed on the inner end of the rotation axis of the drive motor 112, and the second gear 114 is fixed on the unwinding roller 103 at the position corresponding to the first gear 113.

[0098] In use, the quick-release unwinding roller 103 is centered and positioned front and back by two support wheels 111, and its front and back position is maintained by the opening groove 110. The unwinding roller 103 is pulled downward by the first guide roller 106 so that the quick-change unwinding roller 103 can work stably with the second drive mechanism 105.

[0099] In this embodiment, the winding and unwinding mechanism 1 further includes:

[0100] Cam 115 is fixedly mounted on unwinding roller 103;

[0101] The first rotating wheel 116 and the second rotating wheel 117 are both rotatably mounted on the bracket 101 and respectively abut against the two sides of the cam 115.

[0102] In this technical solution, four support wheels 111 are symmetrically arranged on the left and right sides. The first gear 113 and the second gear 114 are located at the right end of the unwinding roller 103, and the rotating wheel is located at the left end of the unwinding roller 103. The cam 115 is fixed on the unwinding roller 103 near the left end and placed inside the bracket 101. Two support rods are fixed on the bracket 101 and are symmetrically arranged on both sides of the cam 115. The first rotating wheel 116 and the second rotating wheel 117 are symmetrically arranged on the two support rods and can be rotatably mounted to limit the cam 115 and the unwinding roller 103 in the left and right directions.

[0103] This reduces the roller changing time from the traditional 15 minutes to 2-3 minutes, and the positioning accuracy reaches ±0.5mm, preventing the fabric from deviating.

[0104] In some technical solutions, the cutting blade of the cutting mechanism 2 can be a vibrating blade or a laser cutting head, which can be adapted to non-woven fabrics of different materials.

[0105] In other technical solutions, the photosensitive element 5 can be a multi-channel photodiode array combined with a focusing lens to achieve regional transmittance comparison and reduce system cost.

[0106] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A cutting device for nonwoven fabric production, characterized in that, include: The winding and unwinding mechanism (1) is used to drive the fabric movement; The cutting mechanism (2) is set on one side of the fabric movement path and is used to cut the rough edges of the fabric. The moving mechanism (3) is connected to the cutting mechanism (2) and is used to adjust the cutting position of the cutting mechanism (2); The light-emitting module (4) and the photosensitive element (5) are respectively placed on both sides of the fabric surface; The light-emitting module (4) is used to emit a stable light beam that penetrates the edge area of ​​the fabric; The photosensitive element (5) is used to receive transmitted light signals and convert them into electrical signals; The control unit is electrically connected to the photosensitive element (5) and the moving mechanism (3) and is used to control the opening and closing of the moving mechanism (3) according to the electrical signal of the photosensitive element (5).

2. The edge-cutting device for nonwoven fabric production according to claim 1, characterized in that, Also includes: The housing (6) is hollow and covers the outside of the cutting mechanism (2). It has a notch at the position where the cutting blade of the cutting mechanism (2) interacts with the fabric, and it has an air inlet and an air outlet. A fan (7) is installed near the air inlet and is used to blow air into the housing (6); An external exhaust pipe (8) is installed near the exhaust port.

3. The edge-cutting device for nonwoven fabric production according to claim 1, characterized in that, The cutting mechanism (2), the moving mechanism (3), the light-emitting module (4), and the photosensitive element (5) are all symmetrically arranged in pairs.

4. The edge-cutting device for nonwoven fabric production according to claim 1, characterized in that, The winding and unwinding mechanism (1) includes: Stent (101); The take-up roller (102) is rotatably mounted on the bracket (101); The unwinding roller (103) is rotatably mounted on the bracket (101); The first drive mechanism (104) is connected to the take-up roller (102) and is used to drive the take-up roller (102) to rotate; The second drive mechanism (105) is connected to the unwinding roller (103) and is used to drive the unwinding roller (103) to rotate; Several guide rollers are rotatably mounted on the bracket (101) for adjusting the direction of the fabric.

5. The edge-cutting device for nonwoven fabric production according to claim 4, characterized in that, The bracket (101) is provided with an opening slot (110), and the unwinding roller (103) is detachably disposed in the opening slot (110); The winding and unwinding mechanism (1) further includes: Two support wheels (111) are symmetrically arranged on the bracket (101) for contacting the unwinding roller (103); The second drive mechanism (105) includes: A drive motor (112) is mounted on the bracket (101); The first gear (113) is mounted on the rotating shaft of the drive motor (112); The second gear (114) is disposed on the unwinding roller (103) and meshes with the first gear (113).

6. The edge-cutting device for nonwoven fabric production according to claim 5, characterized in that, The winding and unwinding mechanism (1) further includes: The cam (115) is fixedly mounted on the unwinding roller (103); The first rotating wheel (116) and the second rotating wheel (117) are rotatably mounted on the bracket (101) and respectively abut against the two sides of the cam (115).

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