Nonwoven fabric length measuring device

Abstract

The utility model provides a kind of non-woven fabric length measuring device, including left-right symmetrical support frame, which is provided with the opening for non-woven fabric to pass through, the opening upper side is provided with the compression wheel that is tangent contact with non-woven fabric, support frame front / back side is rotatably installed measuring wheel by connecting sheet, the rotary shaft of the measuring wheel is provided with encoder, the encoder records the number of rotations with the rotation of measuring wheel, and the encoder is electrically connected with controller.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production and processing technology, specifically to a nonwoven fabric length measuring device. Background Technology

[0002] In existing nonwoven bag production processes, ultrasonic welding technology is typically used to rapidly shape nonwoven fabric materials into bag structures. While this process offers advantages such as high efficiency and environmental friendliness, it has significant technical shortcomings in practical operation. Current production lines generally lack precise length measurement devices. Because of the lack of length monitoring during the unwinding, cutting, and sealing processes of nonwoven fabric rolls, nonwoven fabric suppliers may cut corners. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nonwoven fabric length measuring device.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A nonwoven fabric length measuring device includes a support frame symmetrically arranged on the left and right sides. The middle section of the support frame has an opening that allows the nonwoven fabric to pass through. A pressure roller for tangential contact with the nonwoven fabric is connected to the upper side of the opening. A measuring wheel is rotatably arranged on the front or rear side of the support frame via a connecting piece. An encoder is arranged on the shaft of the measuring wheel. The encoder records the number of rotations as the measuring wheel rotates. The encoder is electrically connected to a controller.

[0006] As a preferred technical solution, the support frame includes a transverse connecting frame, the pressure roller is disposed on the upper or lower side of the transverse connecting frame, and a pressure adjustment mechanism is disposed on the pressure roller passing through the transverse connecting frame.

[0007] As a preferred technical solution, the pressure regulating mechanism includes a vertically arranged pneumatic spring, which enables the pressure roller to continuously contact the nonwoven fabric in a direction away from the pneumatic spring.

[0008] As a preferred technical solution, the pneumatic spring is connected to an air pump.

[0009] As a preferred technical solution, the transverse connecting frame is hollowed out vertically and equipped with a width adjustment mechanism, and the pressure roller and pressure adjustment mechanism are mounted on the width adjustment mechanism.

[0010] As a preferred technical solution, the width adjustment mechanism includes a slide rail arranged along the width direction of the nonwoven fabric, a slider fixedly arranged on the slide rail, a pneumatic spring and a pressure roller arranged on the slider, and a locking bolt arranged through the slider, the tail of the locking bolt abutting against the slide rail.

[0011] As a preferred technical solution, the connecting piece is inclined, and the end of the connecting piece near the support frame is connected to the support frame by a hinge. A tension spring is also provided between the connecting piece and the support frame, and the tension spring causes the connecting piece to have a tendency to move closer to the support frame.

[0012] As a preferred technical solution, the controller is also electrically connected to an LED display screen.

[0013] As a preferred technical solution, the support frame is also rotatably equipped with a roller tangent to the pressure roller, and the nonwoven fabric passes through the gap between the pressure roller and the roller.

[0014] The advantages and beneficial effects of this utility model are as follows: High-speed dynamic measurement of the nonwoven fabric during operation is achieved through a measuring wheel and encoder. The encoder records the number of rotations and transmits it to the controller, which, combined with the circumference of the measuring wheel, converts it into a precise length value, thereby determining whether the length of the nonwoven fabric meets the supplier's delivery standards. The pressure roller is linked to a pneumatic spring, and the pressure of the pressure roller is dynamically adjusted by an air pump to ensure constant pressure contact with the surface of the nonwoven fabric. The elastic compensation mechanism of the pneumatic spring can adapt to nonwoven fabric materials of different thicknesses and hardnesses, avoiding deformation caused by slippage or excessive compression. The slide rail-slider mechanism allows the pressure roller to move laterally, covering nonwoven fabric rolls of different widths. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure label:

[0017] 1-Support frame, 2-Opening, 3-Pressure roller, 4-Calculating roller, 5-Encoder, 6-Transverse connecting frame, 7-Pneumatic spring, 8-Slide rail, 9-Slider, 10-Locking bolt, 11-Connecting piece, 12-Tension spring, 13-LED display screen, 14-Roller. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0019] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly or implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] like Figure 1 As shown, this utility model provides a nonwoven fabric length measuring device, including a support frame 1, a transverse connecting frame 6, a pressure roller 3, a measuring roller 4, and an encoder 5. The support frame 1 has an opening 2 at the top for threading the nonwoven fabric roll. The transverse connecting frame 6 is slidably connected to the support frame 1 laterally via a slide rail 8 and a slider 9, and its position is fixed by a locking bolt 10. The pressure roller 3 and the measuring roller 4 are arranged parallel to each other below the transverse connecting frame 6, and the two are rigidly connected by a connecting piece 11. The encoder 5 is fixed to the end of the rotating shaft of the measuring roller 4 and records the number of rotations in real time. An LED display screen 13 is installed on the side wall of the support frame 1 to display the length measurement value.

[0022] The non-woven fabric is pulled by roller 14 and passes between pressure roller 3 and measuring roller 4. The measuring roller 4 rotates synchronously with the movement of the non-woven fabric. The encoder 5 collects the number of rotations and transmits it to the controller.

[0023] The controller calculates the length value using the formula L=n×π×d (n is the number of turns, d is the diameter of the measuring wheel), compares it with the supplier's delivery standard, and displays the result on the LED screen 13. The pressure roller 3 is elastically connected to the transverse connecting frame 6 through the pneumatic spring 7. The air pump supplies air to the pneumatic spring 7 to dynamically adjust the downward pressure of the pressure roller 3. When the thickness or hardness of the nonwoven fabric changes, the pneumatic spring 7 automatically extends and retracts to buffer, ensuring that the pressure roller 3 is in contact with the material surface and avoiding slippage or material deformation.

[0024] The width adjustment device is used as follows: loosen the locking bolt 10, move the slider 9 and connecting frame 6 laterally along the slide rail 8, adjust the covering position of the pressure roller 3 and measuring roller 4 according to the width of the nonwoven fabric roll, and reset the locking bolt 10 to fix the transverse connecting frame 6.

[0025] The air pump is set to a reference pressure of 0.2 MPa. The slider 9 is moved to align the pressure roller 3 with the edge of the nonwoven fabric. The equipment is running, and the encoder 5 transmits data to the controller in real time. The LED screen 13 displays the length value.

[0026] In some embodiments, the roller 14 is not necessary. Considering that the production equipment for nonwoven bags usually comes with multiple sets of take-up and release rollers, the present invention can fix the support frame between two take-up and release rollers and the pressure roller can be attached to the upper side of the two take-up and release rollers.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A nonwoven fabric length measuring device, comprising a support frame (1) symmetrically arranged on the left and right sides, characterized in that, The support frame (1) has an opening (2) in the middle section that allows non-woven fabric to pass through. A pressure roller (3) for tangential contact with the non-woven fabric is connected to the upper side of the opening (2). A measuring wheel (4) is rotatably arranged on the front or rear side of the support frame (1) via a connecting piece (11). An encoder (5) is arranged on the rotating shaft of the measuring wheel (4). The encoder (5) records the number of rotations as the measuring wheel (4) rotates. The encoder (5) is electrically connected to a controller.

2. The apparatus according to claim 1, characterized in that, The support frame (1) includes a transverse connecting frame (6), and the pressure roller (3) is disposed on the upper or lower side of the transverse connecting frame (6). The pressure roller (3) passes through the transverse connecting frame (6) and is provided with a pressure adjustment mechanism.

3. The apparatus according to claim 2, characterized in that, The pressure regulating mechanism includes a vertically arranged pneumatic spring (7), which enables the pressure roller (3) to continuously contact the nonwoven fabric in a direction away from the pneumatic spring (7).

4. The apparatus according to claim 3, characterized in that, The pneumatic spring (7) is connected to an air pump.

5. The apparatus according to claim 3, characterized in that, The horizontal connecting frame (6) is hollowed out at the top and bottom and is equipped with a width adjustment mechanism. The pressure roller (3) and the pressure adjustment mechanism are set on the width adjustment mechanism.

6. The apparatus according to claim 5, characterized in that, The width adjustment mechanism includes a slide rail (8) arranged along the width direction of the nonwoven fabric, a slider (9) fixedly arranged on the slide rail (8), a pneumatic spring (7) and a pressure roller (3) arranged on the slider (9), and a locking bolt (10) arranged through the slider (9), the tail of the locking bolt (10) abutting against the slide rail (8).

7. The apparatus according to claim 1, characterized in that, The connecting piece (11) is inclined, and one end of the connecting piece (11) near the support frame (1) is connected to the support frame (1) by a hinge. A tension spring (12) is also provided between the connecting piece (11) and the support frame (1), and the tension spring (12) makes the connecting piece (11) have a tendency to move closer to the support frame (1).

8. The apparatus according to claim 1, characterized in that, The controller is also electrically connected to an LED display screen (13).

9. The apparatus according to claim 1, characterized in that, The support frame (1) is also rotatably equipped with a roller (14) tangent to the pressure roller (3), through which the nonwoven fabric passes.

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