Online testing equipment for air permeability of glass fiber felt

Abstract

The utility model discloses online testing equipment for the air permeability of a glass fiber mat. The online testing equipment comprises a first lifting roller assembly, a flow testing device and a second lifting roller assembly which are sequentially arranged between an unwinding roller and a winding roller, the flow testing device comprises a third lifting guide rail, a third linear driving assembly, a third lifting plate capable of being driven by the third linear driving assembly to do linear motion, a negative pressure pipe fixed to the third lifting plate and an air inlet pipe arranged below the negative pressure pipe, and the third lifting guide rail is provided with a third guide rail groove. The third lifting plate is in sliding fit with the third guide rail groove, a negative pressure pump is arranged on the negative pressure pipe, the negative pressure pump is provided with an air outlet pipe, and a gas flow meter is arranged on the air outlet pipe. The test is simple and convenient, and the waste of the glass fiber felt is avoided.

Description

Technical Field

[0001] This utility model relates to glass fiber mat production equipment, and in particular to an online testing device for the air permeability of glass fiber mat. Background Technology

[0002] During the production of fiberglass mat, it is necessary to conduct an air permeability test to check whether it meets the air permeability requirements of certain application scenarios. Existing fiberglass mat air permeability testing equipment often can only take samples for testing after the fiberglass mat has been rolled up. The sampling range is limited, which is time-consuming and labor-intensive, and also causes waste of fiberglass mat during sampling. Summary of the Invention

[0003] The purpose of this invention is to provide an online testing device for the air permeability of glass fiber mat that is convenient to use and does not cause waste of glass fiber mat.

[0004] The technical solution to achieve the purpose of this utility model is as follows:

[0005] An online monitoring device for the air permeability of fiberglass mat includes a first lifting roller assembly, a flow testing device, and a second lifting roller assembly arranged sequentially between an unwinding roller and a winding roller.

[0006] The first lifting roller assembly includes a first lifting guide rail, a first linear drive assembly, a first lifting plate that can be driven by the first linear drive assembly to make linear motion, a first lifting roller disposed on the first lifting plate and rotatably connected to the first lifting plate, and two first transition rollers disposed below the first lifting roller. The first lifting guide rail is provided with a first guide rail groove, and the first lifting plate is slidably engaged with the first guide rail groove.

[0007] The second lifting roller assembly includes a second lifting guide rail, a second linear drive assembly, a second lifting plate that can be driven by the second linear drive assembly to make linear motion, a second lifting roller disposed on the second lifting plate and rotatably connected to the second lifting plate, and two second transition rollers disposed below the second lifting roller. The second lifting guide rail is provided with a second guide rail groove, and the second lifting plate is slidably engaged with the second guide rail groove.

[0008] The flow testing device includes a third lifting guide rail, a third linear drive assembly, a third lifting plate that can be driven by the third linear drive assembly to make linear motion, a negative pressure pipe fixed on the third lifting plate, and an air inlet pipe disposed below the negative pressure pipe. The third lifting guide rail is provided with a third guide rail groove, and the third lifting plate is slidably engaged with the third guide rail groove. A negative pressure pump is provided on the negative pressure pipe, and an air outlet pipe is provided on the negative pressure pump. A gas flow meter is provided on the air outlet pipe.

[0009] With the above structure, before the air permeability test of the fiberglass mat is required, the first lifting roller is in a low position and in contact with the bottom surface of the fiberglass mat, the second lifting roller is in a high position and in contact with the bottom surface of the fiberglass mat, the negative pressure pump is started, and the gas flow meter measures the initial flow rate Q1. During the air permeability test of the fiberglass mat, the third linear drive assembly drives the third lifting plate to descend, so that the negative pressure pipe presses the fiberglass mat tightly against the upper end face of the air inlet pipe. The negative pressure pump is started, and the gas flow meter measures the gas flow rate Q2. At this time, the first linear drive assembly drives the first lifting plate and the first lifting roller to rise from the low position, thereby ensuring the tension of the fiberglass mat between the first lifting roller and the take-up roller. At the same time, the second linear drive assembly drives the second lifting plate and the second lifting roller to move downward from the high position to prevent the fiberglass mat between the second lifting roller and the take-up roller from being damaged due to excessive tension. After the gas flow rate Q2 is measured, the third... The linear drive assembly drives the negative pressure pipe to rise, disengaging it from the air inlet pipe. Simultaneously, the first linear drive assembly drives the first lifting plate and the first lifting roller to descend to their initial positions. The second linear drive assembly drives the second lifting plate and the second lifting roller to rise to their initial positions. This maintains the tension of the fiberglass mat while preparing for the next air permeability test. The measured result is the air permeability of the fiberglass mat, obtained through the difference between Q1 and Q2. A larger difference between Q1 and Q2 indicates better air permeability, while a smaller difference indicates poorer air permeability. The standard deviation can be obtained by testing standard fiberglass mat samples to confirm whether the measured difference meets the requirements. This invention can complete the air permeability test of fiberglass mat without stopping the winding equipment, and it eliminates the need for cutting and sampling the fiberglass mat. The test is simple and convenient, and it does not cause waste of fiberglass mat.

[0010] Preferably, in order to ensure that the glass fiber felt is compressed by the negative pressure pipe and the air inlet pipe and to ensure the accuracy of the test results, a first magnet is provided on the upper end face of the air inlet pipe, and a second magnet corresponding to the first magnet is provided on the lower end face of the negative pressure pipe.

[0011] The first linear drive assembly includes a first motor, the first motor having a first rotating shaft, the first rotating shaft being threadedly connected to a first lifting plate.

[0012] The second linear drive assembly includes a second motor having a second rotating shaft that is threadedly connected to a second lifting plate.

[0013] The third linear drive assembly includes a third motor, which has a third rotating shaft that is threadedly connected to a third lifting plate. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

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

[0016] Figure 2 This is a schematic diagram of the flow testing device of this utility model. Detailed Implementation

[0017] like Figure 1 and Figure 2 As shown, the present invention provides an online monitoring device for the air permeability of fiberglass mat, comprising a first lifting roller assembly, a flow testing device, and a second lifting roller assembly sequentially arranged between an unwinding roller and a winding roller. The first lifting roller assembly includes a first lifting guide rail 1, a first linear drive assembly, a first lifting plate 2 capable of linear motion driven by the first linear drive assembly, a first lifting roller 3 disposed on and rotatably connected to the first lifting plate, and two first transition rollers 4 disposed below the first lifting roller. A first guide rail groove 5 is provided on the first lifting guide rail, and the first lifting plate slides into the first guide rail groove. The second lifting roller assembly includes a second lifting guide rail 6, a second linear drive assembly, and a second lifting plate capable of linear motion driven by the second linear drive assembly. 7. A second lifting roller 8 is mounted on the second lifting plate and rotatably connected to the second lifting plate, and two second transition rollers 9 are mounted below the second lifting roller. A second guide rail groove 10 is provided on the second lifting guide rail, and the second lifting plate is slidably engaged with the second guide rail groove. The flow testing device includes a third lifting guide rail 11, a third linear drive assembly, a third lifting plate 13 that can be driven by the third linear drive assembly to make linear motion, a negative pressure pipe 14 fixed on the third lifting plate, and an air inlet pipe 15 located below the negative pressure pipe. The third lifting guide rail is provided with a third guide rail groove 16, and the third lifting plate is slidably engaged with the third guide rail groove. A negative pressure pump 17 is provided on the negative pressure pipe, an air outlet pipe 18 is provided on the negative pressure pump, and a gas flow meter 19 is provided on the air outlet pipe.

[0018] In some embodiments, such as Figure 2 As shown, a first magnet 20 is provided on the upper end face of the air intake pipe, and a second magnet 21 corresponding to the first magnet is provided on the lower end face of the negative pressure pipe.

[0019] In some embodiments, such as Figure 1 As shown, the first linear drive assembly includes a first motor 22, the first motor having a first rotating shaft 23, the first rotating shaft being threadedly connected to the first lifting plate.

[0020] In some embodiments, such as Figure 1 As shown, the second linear drive assembly includes a second motor 24, the second motor having a second rotating shaft 25, the second rotating shaft being threadedly connected to the second lifting plate.

[0021] In some embodiments, such as Figure 1 As shown, the third linear drive assembly includes a third motor 26, which has a third rotating shaft 27, and the third rotating shaft is threadedly connected to the third lifting plate.

[0022] With the above structure, before the air permeability test of the fiberglass mat is required, the first lifting roller is in a low position and in contact with the bottom surface of the fiberglass mat, the second lifting roller is in a high position and in contact with the bottom surface of the fiberglass mat, the negative pressure pump is started, and the gas flow meter measures the initial flow rate Q1. During the air permeability test of the fiberglass mat, the third linear drive assembly drives the third lifting plate to descend, so that the negative pressure pipe presses the fiberglass mat tightly against the upper end face of the air inlet pipe. The negative pressure pump is started, and the gas flow meter measures the gas flow rate Q2. At this time, the first linear drive assembly drives the first lifting plate and the first lifting roller to rise from the low position, thereby ensuring the tension of the fiberglass mat between the first lifting roller and the take-up roller. At the same time, the second linear drive assembly drives the second lifting plate and the second lifting roller to move downward from the high position to prevent the fiberglass mat between the second lifting roller and the take-up roller from being damaged due to excessive tension. After the gas flow rate Q2 is measured, the third... The linear drive assembly drives the negative pressure pipe to rise, disengaging it from the air inlet pipe. Simultaneously, the first linear drive assembly drives the first lifting plate and the first lifting roller to descend to their initial positions. The second linear drive assembly drives the second lifting plate and the second lifting roller to rise to their initial positions. This maintains the tension of the fiberglass mat while preparing for the next air permeability test. The measured result is the air permeability of the fiberglass mat, obtained through the difference between Q1 and Q2. A larger difference between Q1 and Q2 indicates better air permeability, while a smaller difference indicates poorer air permeability. The standard deviation can be obtained by testing standard fiberglass mat samples to confirm whether the measured difference meets the requirements. This invention can complete the air permeability test of fiberglass mat without stopping the winding equipment, and it eliminates the need for cutting and sampling the fiberglass mat. The test is simple and convenient, and it does not cause waste of fiberglass mat.

[0023] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An online testing device for the air permeability of glass fiber mat, characterized in that: It includes a first lifting roller assembly, a flow testing device, and a second lifting roller assembly, which are sequentially arranged between the unwinding roller and the winding roller; The first lifting roller assembly includes a first lifting guide rail, a first linear drive assembly, a first lifting plate that can be driven by the first linear drive assembly to make linear motion, a first lifting roller disposed on the first lifting plate and rotatably connected to the first lifting plate, and two first transition rollers disposed below the first lifting roller. The first lifting guide rail is provided with a first guide rail groove, and the first lifting plate is slidably engaged with the first guide rail groove. The second lifting roller assembly includes a second lifting guide rail, a second linear drive assembly, a second lifting plate that can be driven by the second linear drive assembly to make linear motion, a second lifting roller disposed on the second lifting plate and rotatably connected to the second lifting plate, and two second transition rollers disposed below the second lifting roller. The second lifting guide rail is provided with a second guide rail groove, and the second lifting plate is slidably engaged with the second guide rail groove. The flow testing device includes a third lifting guide rail, a third linear drive assembly, a third lifting plate that can be driven by the third linear drive assembly to make linear motion, a negative pressure pipe fixed on the third lifting plate, and an air inlet pipe disposed below the negative pressure pipe. The third lifting guide rail is provided with a third guide rail groove, and the third lifting plate is slidably engaged with the third guide rail groove. A negative pressure pump is provided on the negative pressure pipe, and an air outlet pipe is provided on the negative pressure pump. A gas flow meter is provided on the air outlet pipe.

2. The glass fiber mat air permeability on-line testing apparatus according to claim 1, characterized in that: A first magnet is provided on the upper end face of the air intake pipe, and a second magnet corresponding to the first magnet is provided on the lower end face of the negative pressure pipe.

3. The apparatus according to claim 1, wherein: The first linear drive assembly includes a first motor, the first motor having a first rotating shaft, the first rotating shaft being threadedly connected to a first lifting plate.

4. The apparatus according to claim 1, wherein: The second linear drive assembly includes a second motor having a second rotating shaft, which is threadedly connected to the second lifting plate.

5. The apparatus according to claim 1, wherein: The third linear drive assembly includes a third motor, which has a third rotating shaft that is threadedly connected to a third lifting plate.

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