EVA (Ethylene Vinyl Acetate) sheet air permeability detection device

Abstract

The utility model relates to the technical field of EVA (Ethylene Vinyl Acetate) sheet detection, and discloses an EVA sheet air permeability detection device which comprises a working table, a mounting rack fixedly mounted on the upper surface of the working table, an air blower fixedly mounted on the upper surface of the mounting rack, an air conveying pipe fixedly mounted at the output end of the air blower, and a telescopic rod fixedly mounted on the lower surface of the mounting rack, the air blower is started, so that external air is extracted and is directly input into the upper pressing plate and the conical frame through the air conveying pipe, air is blown to the surface of the EVA sheet, the air blown to the surface of the EVA sheet passes through the interior of the EVA sheet, directly reaches the interior of the conical frame and then is directly exhausted through the air outlet, and when the air passes through the air outlet, the air is exhausted through the air outlet. And at the moment, the flow sensor can sense the flow of air at the air outlet in real time, so that the effect of accurately calculating the air permeability of the EVA sheet is achieved, and the situation that the detection result is wrong due to the fact that the air cannot be observed manually when the amount of exhausted air is small or slow is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to EVA sheet detection technical field, concretely is a kind of EVA sheet ventilation detection device. BACKGROUND

[0002] EVA is the copolymer of ethylene and vinyl acetate, the chemical name: ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer), the application field of EVA is quite extensive, the market consumption of our country every year is increasing, especially in shoemaking industry, is applied in high-grade tourist shoes, mountaineering shoes, slippers, sandal sole and interior decoration material.In new energy field also has extensive use, such as photovoltaic material, solar cell adhesive etc., in the process of producing EVA sheet, it needs to be ventilated and detected.

[0003] Patent No.: CN221650152U discloses an EVA sheet ventilation detection device.The utility model provides an EVA sheet ventilation detection device which can compress EVA sheet completely, save manpower and ensure the accuracy of ventilation detection.A kind of EVA sheet ventilation detection device, including test table, EVA sheet, piston and push-pull frame etc., the EVA sheet is placed on the upper side of the test table, the piston is slidably connected inside the test table, the push-pull frame is slidably connected in the front of the test table, and the push-pull frame is connected with the piston at the rear side.The utility model places EVA sheet on the test table, after placing, makes the second spring rebound, drives the lifting frame to move downward, so that the lifting frame contacts with EVA sheet, achieves the effect of compressing EVA sheet completely, saving manpower and ensuring the accuracy of ventilation detection, although it can detect ventilation, but its detection of gas permeability is through artificial observation to detect, when the outgassing is less or relatively slow, it is difficult to observe through artificial observation, thereby affecting the accuracy of detection. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an EVA sheet ventilation detection device to solve the problems mentioned in the background.

[0005] To achieve the above object, the utility model provides the following technical scheme: A kind of EVA sheet ventilation detection device, including workbench, the upper surface of the workbench is fixedly installed with mounting bracket, the upper surface of the mounting bracket is fixedly installed with air blower, the output of the air blower is fixedly installed with wind pipe, the lower surface of the mounting bracket is fixedly installed with telescopic link, the lower end of the telescopic link is fixedly installed with upper pressing plate, the upper surface of the workbench is fixedly installed with support column, the upper end of the support column is fixedly installed with placing plate, the middle part of the placing plate is fixedly installed with conical frame, the lower end of the conical frame is fixedly installed with air outlet, the outer surface of the air outlet is provided with flow sensor.

[0006] Further, the upper surface of the workbench is movably installed with threaded rod, the outer surface of the threaded rod is threadedly connected with movable block, the upper end of the threaded rod is fixedly installed with baffle, the right surface of the movable block is fixedly installed with first pressing plate, the right surface of the first pressing plate is fixedly installed with connecting plate, the right surface of the connecting plate is fixedly installed with second pressing plate, the lower surfaces of the connecting plate, first pressing plate and second pressing plate are all provided with silica gel pad, the lower surface of the workbench is fixedly installed with servo motor.

[0007] Further, the front surface of the workbench is fixedly installed with controller.

[0008] Further, the output end of the wind pipe is fixedly connected with the upper surface of the upper pressing plate, and the interiors of the two are mutually penetrated, and the outer surface of the conical frame is fixedly connected with the interior of the workbench.

[0009] Further, the upper surface of the workbench is fixedly installed with slide rod, and the outer surface of the slide rod is movably connected with movable block, and the output end of the servo motor is fixedly connected with the lower end of the threaded rod.

[0010] Further, the controller is electrically connected with the air blower and the flow sensor.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、The EVA sheet ventilation detection device is started by air blower, so that the external gas is directly input into the interior of the upper pressing plate and the conical frame through the wind pipe, so as to be blown to the surface of the EVA sheet, and the wind blown to the surface of the EVA sheet passes through the interior of the EVA sheet and directly reaches the interior of the conical frame, and then is directly discharged through the air outlet, when the wind passes through the air outlet, the flow sensor can sense the flow of the wind at the air outlet in real time, so as to accurately calculate the ventilation of the EVA sheet, so as to avoid the case that the detection result is wrong when the outgassing is less or slower.

[0013] 2、The EVA sheet air permeability detection device is started through the servo motor, thereby driving the threaded rod to move, the threaded rod moves, thereby driving the movable block to move downward, the movable block moves downward, thereby driving the first pressing plate to move downward, thereby approaching the surface of the EVA sheet, when the first pressing plate moves downward, at this time, the first pressing plate drives the second pressing plate to also move downward through the design of the connecting plate, thereby compacting the surface of the EVA sheet, thereby realizing the limiting of the EVA sheet, thereby avoiding the situation of EVA sheet deviation in the detection process, thereby affecting the accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front perspective structure schematic view of the utility model;

[0015] Figure 2 It is a front cross section perspective structure schematic view of the utility model;

[0016] Figure 3 It is a workbench bottom perspective structure schematic view of the utility model;

[0017] Figure 4 It is a workbench bottom perspective structure schematic view of the utility model; Figure 1 It is a front perspective structure schematic view of the utility model;

[0018] In the drawing: 1, workbench; 2, mounting frame; 3, air blower; 4, air conveying pipe; 5, telescopic rod; 6, upper pressing plate; 7, support column; 8, placing plate; 9, conical frame; 10, air outlet; 11, flow sensor; 12, threaded rod; 13, movable block; 14, baffle; 15, first pressing plate; 16, connecting plate; 17, second pressing plate; 18, silica gel pad; 19, servo motor; 20, controller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment 1:

[0021] Please refer to Figures 1-4The utility model provides a technical scheme: an EVA sheet air permeability detection device, including work table 1, the upper surface fixed mounting of work table 1 has installation support 2, the upper surface fixed mounting of installation support 2 has air blower 3, the output fixed mounting of air blower 3 has wind pipe 4, the lower surface fixed mounting of installation support 2 has telescopic link 5, the lower end fixed mounting of telescopic link 5 has upper pressure plate 6, the upper surface fixed mounting of work table 1 has support column 7, the upper end fixed mounting of support column 7 has placing plate 8, the middle part fixed mounting of placing plate 8 has conical frame 9, the lower end fixed mounting of conical frame 9 has air outlet 10, the outer surface of air outlet 10 is provided with flow sensor 11, specifically, telescopic link 5 starts to move down with upper pressure plate 6 is driven, upper pressure plate 6 moves down to approach the surface of EVA sheet, until both mutual contact, at this time, upper pressure plate 6 and conical frame 9 are extruded together in a region, at this time, air blower 3 starts to extract external gas and directly input into the inside of upper pressure plate 6 and conical frame 9 through wind pipe 4 to blow to the surface of EVA sheet, the wind blown to the surface of EVA sheet passes through the inside of EVA sheet and directly reaches the inside of conical frame 9, then is directly discharged through air outlet 10, when the wind passes through air outlet 10, flow sensor 11 will induct the flow of wind at air outlet 10 in real time.

[0022] In the embodiment, the upper surface of the workbench 1 is movably installed with a threaded rod 12, the outer surface of the threaded rod 12 is threadedly connected with a movable block 13, the upper end of the threaded rod 12 is fixedly installed with a baffle 14, the right surface of the movable block 13 is fixedly installed with a first pressing plate 15, the right surface of the first pressing plate 15 is fixedly installed with a connecting plate 16, the right surface of the connecting plate 16 is fixedly installed with a second pressing plate 17, the lower surfaces of the connecting plate 16, the first pressing plate 15 and the second pressing plate 17 are all provided with silica gel pads 18, the lower surface of the workbench 1 is fixedly installed with a servo motor 19, specifically, the servo motor 19 is started to drive the threaded rod 12 to move, the threaded rod 12 moves to drive the movable block 13 to move downward, the movable block 13 moves downward to drive the first pressing plate 15 to move downward to approach the surface of the EVA sheet, when the first pressing plate 15 moves downward, the first pressing plate 15 drives the second pressing plate 17 to move downward through the design of the connecting plate 16 to press the surface of the EVA sheet tightly, thereby limiting the EVA sheet.

[0023] In the embodiment, the front surface of the workbench 1 is fixedly installed with a controller 20, specifically, the controller 20 controls the start of the whole device.

[0024] In the embodiment, the output end of the air conveying pipe 4 is fixedly connected with the upper surface of the upper pressing plate 6 and the interiors of the two are mutually penetrated, the outer surface of the conical frame 9 is fixedly connected with the interior of the workbench 1, specifically, the conical frame 9 is fixedly connected with the interior of the workbench 1, thereby providing a stable supporting force for the conical frame 9, thereby preventing the conical frame 9 from shaking and deviating due to lack of fixation.

[0025] In the embodiment, the upper surface of the workbench 1 is fixedly installed with a sliding rod, and the outer surface of the sliding rod is movably connected with the movable block 13; the output end of the servo motor 19 is fixedly connected with the lower end of the threaded rod 12.

[0026] In the embodiment, the controller 20 is electrically connected with the air blower 3 and the flow sensor 11.

[0027] Working principle: when the EVA sheet needs to be detected for air permeability, the EVA sheet is directly placed on the placing plate 8, and then the first pressing plate 15 and the second pressing plate 17 are used to limit the EVA sheet; after the limiting is completed, the telescopic rod 5 is started to drive the upper pressing plate 6 to move downwards, the upper pressing plate 6 moves downwards to approach the surface of the EVA sheet, until the two are in contact with each other, the upper pressing plate 6 and the conical frame 9 jointly extrude a region, at this time, the air blower 3 is started to draw external air directly into the interiors of the upper pressing plate 6 and the conical frame 9 through the air conveying pipe 4, thereby blowing to the surface of the EVA sheet, the air blown to the surface of the EVA sheet passes through the interior of the EVA sheet and directly reaches the interior of the conical frame 9, and then is directly discharged through the air outlet 10; when the air passes through the air outlet 10, the flow sensor 11 senses the flow of the air at the air outlet 10 in real time, when the flow rate and the discharge amount of the air reach the standard, the EVA sheet is determined to be a standard board.

[0028] When the EVA sheet is placed on the placing plate 8, the servo motor 19 is started to drive the threaded rod 12 to move, the threaded rod 12 moves to drive the movable block 13 to move downwards, the movable block 13 moves downwards to drive the first pressing plate 15 to move downwards to approach the surface of the EVA sheet; when the first pressing plate 15 moves downwards, the first pressing plate 15 drives the second pressing plate 17 to also move downwards through the design of the connecting plate 16, thereby pressing the surface of the EVA sheet, and the EVA sheet is limited.

[0029] The controller 20 is of a known structure, and the control circuit can be realized by simple programming of those skilled in the art, which is known in the art, and only the use is described, and the control mode and circuit connection are not described in detail.

[0030] The above-mentioned selection of various devices for use of the equipment is different, and is selected and used according to the actual situation, and various parameters are referred to, and the function of the used equipment and the achieved effect are corresponding.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An EVA sheet air permeability detection device, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly installed with a mounting rack (2), the upper surface of the mounting rack (2) is fixedly installed with a blower (3), the output end of the blower (3) is fixedly installed with a wind pipe (4), the lower surface of the mounting rack (2) is fixedly installed with a telescopic rod (5), the lower end of the telescopic rod (5) is fixedly installed with an upper pressing plate (6), the upper surface of the workbench (1) is fixedly installed with a supporting column (7), the upper end of the supporting column (7) is fixedly installed with a placing plate (8), the middle part of the placing plate (8) is fixedly installed with a conical rack (9), the lower end of the conical rack (9) is fixedly installed with an air outlet (10), and the outer surface of the air outlet (10) is provided with a flow sensor (11).

2. The EVA sheet air permeability detection device according to claim 1, characterized in that: The upper surface of the workbench (1) is movably installed with a threaded rod (12), the outer surface of the threaded rod (12) is threadedly connected with a movable block (13), the upper end of the threaded rod (12) is fixedly installed with a baffle (14), the right surface of the movable block (13) is fixedly installed with a first pressing plate (15), the right surface of the first pressing plate (15) is fixedly installed with a connecting plate (16), the right surface of the connecting plate (16) is fixedly installed with a second pressing plate (17), the lower surfaces of the connecting plate (16), the first pressing plate (15) and the second pressing plate (17) are all provided with silica gel pads (18), and the lower surface of the workbench (1) is fixedly installed with a servo motor (19).

3. The EVA sheet air permeability detection device according to claim 1, characterized in that: The front surface of the workbench (1) is fixedly installed with a controller (20).

4. The EVA sheet air permeability detection device according to claim 1, characterized in that: The output end of the wind pipe (4) is fixedly connected with the upper surface of the upper pressing plate (6) and the interiors thereof are mutually penetrated, and the outer surface of the conical rack (9) is fixedly connected with the interior of the workbench (1).

5. The EVA sheet air permeability detection device according to claim 2, characterized in that: The upper surface of the workbench (1) is fixedly installed with a sliding rod, and the outer surface of the sliding rod is movably connected with the movable block (13), and the output end of the servo motor (19) is fixedly connected with the lower end of the threaded rod (12).

6. The EVA sheet air permeability detection device according to claim 3, characterized in that: The controller (20) is electrically connected with the blower (3) and the flow sensor (11).

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