Placing tool for detecting moisture permeability of preservative film

Abstract

The utility model discloses a placing tool for detecting the moisture permeability of a preservative film, and relates to the technical field of detection of the moisture permeability of the preservative film. Comprising a detection box body, and a placement device is arranged in the detection box body; the placing device comprises two sliding blocks, at least two vertical pipes are fixed to the bottoms of the opposite sides of the two sliding blocks, a pressing assembly is arranged between the vertical pipes on one side, and a stretching part is arranged on the side face of one pressing assembly. The top supporting piece is arranged, the preservative film is fixed and straightened through the pressing assembly and the stretching part, the controller controls the bottom hydraulic cylinder to stretch, the bottom hydraulic cylinder drives the movable plate and the water containing cup to move upwards till the top of the water containing cup makes contact with the bottom of the preservative film, and the controller controls the top hydraulic cylinder to stretch. The telescopic end of the top hydraulic cylinder extrudes the fixing plate, the socket rod and the annular pressing plate move downwards, the annular pressing plate extrudes the top of the cup edge of the water containing cup, and sealing of the top of the water containing cup is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fresh -keeping film moisture permeation amount detection, specifically to a kind of for detecting the placement tool of fresh -keeping film moisture permeation amount. BACKGROUND

[0002] The moisture permeation amount of fresh-keeping film refers to its ability to allow water to pass through, which is usually used to evaluate the effectiveness of fresh-keeping film in maintaining the freshness of food. The moisture permeation amount directly affects the performance of fresh-keeping film.

[0003] Chinese utility model patent, authorized publication number CN216718138U discloses a fresh-keeping film placement tool based on fresh-keeping film moisture permeation amount detection device, which includes fresh-keeping film fixing rods, fresh-keeping film tightening rods, adjusting nuts, threaded rods, limit rings, tightening nuts, flat rods, and telescopic fixing rods. The fresh-keeping film can be supported and fixed, and wrinkles during support are avoided, ensuring the accuracy of the test results. The visible water removal device, sliding rail, sliding block, detachable rotating shaft, and water absorption block can be used to wipe and absorb the fresh-keeping film in parallel, avoiding damage to the fresh-keeping film during visible water removal.

[0004] The above-mentioned solution solves the technical problems raised in the background technology, but in actual application, the above-mentioned solution still has certain defects, such as the fresh-keeping film moisture permeation test needs to cover the fresh-keeping film on the top of the water-containing cup, and after a period of time, the moisture permeation amount is obtained by weighing the water-containing cup and related calculations. After the fresh-keeping film is stretched and fixed by the telescopic fixing rod of the above-mentioned device, the sealing between the water-containing cup and the fresh-keeping film is poor, which reduces the accuracy of the measurement results. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a placement tool for detecting the moisture permeation amount of fresh-keeping film to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a placement tool for detecting the moisture permeation amount of fresh-keeping film, including a detection box body, a placement device is arranged in the detection box body;

[0007] The placement device includes two sliding blocks, at least two vertical pipes are fixed to the bottom of the opposite sides of the two sliding blocks, and a pressing assembly is arranged between the vertical pipes on one side. The side surface of one of the pressing assemblies is provided with a stretching part.

[0008] The top of the vertical pipe is provided with a top support, and the top support includes a fixed plate. The bottom of the fixed plate is provided with an annular pressing plate, and the annular pressing plate is located directly above the water-containing cup.

[0009] Preferably, the clamping assembly includes a bottom support plate, a plurality of screws are fixed on the top of the bottom support plate, a pressure plate is movably provided on the top of the bottom support plate, the screws are movably connected to the pressure plate, and a fastening nut is threaded on the rod body of the screw.

[0010] Preferably, a plurality of limiting rods are fixed to the top of the bottom support plate, and a plurality of through holes are opened on the plate body of the pressure plate, and the through holes are adapted to the limiting rods.

[0011] Preferably, the stretching part includes a connecting block, a screw rod is movably screwed on the connecting block, one end of the screw rod is movably connected to the side of the bottom support plate, a guide rod is fixed to the side of the connecting block, and the guide rod is movably plugged into the bottom support plate.

[0012] Preferably, the top support member further comprises a number of socket rods the same as the number of the vertical pipes, a slot is provided on the top of the vertical pipe, the socket rods are movably connected to the slots, and a spring is fixed between the bottom wall of the slots and the bottom end of the socket rods;

[0013] A cross bar is fixed between the transverse socket rods, and a fixing plate is fixed between the two cross bars.

[0014] Preferably, a pressure sensor is fixed to the top of the annular pressure plate, a connecting plate is fixed to the top of the pressure sensor, and the connecting plate is fixed to the fixing plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The placement tool for detecting the moisture permeability of the cling film is provided with a pressing component and a stretching part. The two sides of the cling film are respectively placed on the top of the bottom support plate, and then the pressure plate is inserted into the screw rod. The tightening nut is rotated until the pressure plate squeezes the cling film. The screw rod is rotated. When the screw rod rotates, the bottom support plate on that side is driven to move outward until the cling film is straightened to avoid wrinkles when covering.

[0017] At the same time, a top support is provided, which fixes and straightens the plastic wrap through the clamping assembly and the stretching part. The controller controls the extension of the bottom hydraulic cylinder, and the bottom hydraulic cylinder drives the movable plate and the water cup to move upward until the top of the water cup contacts the bottom of the plastic wrap. The controller controls the extension of the top hydraulic cylinder, and the telescopic end of the top hydraulic cylinder squeezes the fixed plate, and the socket rod and the annular pressure plate move downward, and the annular pressure plate squeezes the top of the cup edge of the water cup to achieve sealing of the top of the water cup, thereby preventing water in the water cup from overflowing through water vapor, thereby improving the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a right side axial view of the present invention;

[0019] Figure 2This is the axial view of the utility model after the box door is opened;

[0020] Figure 3 This is a first axis view of the placement device of the utility model;

[0021] Figure 4 This is a second axis view of the placement device of the utility model.

[0022] In the figure: 1. Detection box body; 2. Placement device; 201. Slider; 202. Vertical pipe; 301. Bottom support plate; 302. Limit rod; 303. Screw; 304. Connecting block; 305. Screw; 306. Guide rod; 401. Annular pressure plate; 402. Pressure sensor; 403. Connecting plate; 501. Cross bar; 502. Socket rod; 503. Fixed plate; 6. Movable plate; 7. Bottom hydraulic cylinder; 8. Water cup; 9. Top hydraulic cylinder. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1-4 As shown, the utility model provides a technical solution: a placement tool for detecting the moisture permeability of a cling film, comprising a detection box body 1 and a controller, wherein a placement device 2 is provided in the detection box body 1 .

[0025] The placement device 2 includes two sliders 201, which are movably connected to the side walls on both sides of the inner cavity of the detection box body 1. At least two vertical tubes 202 are fixed to the bottom of the opposite sides of the two sliders 201, and a clamping component is provided between the vertical tubes 202 on one side. A stretching portion is provided on the side of one of the clamping components. In a specific embodiment of this solution, the number of vertical tubes 202 is set to two, wherein, as shown in FIG. Figure 3 As shown, the clamping assembly includes a U-shaped bottom support plate 301, a plurality of screws 303 are fixed on the top of the bottom support plate 301, a pressure plate is movably provided on the top of the bottom support plate 301, the screws 303 are movably plugged into the pressure plate, and a fastening nut is threaded on the rod body of the screw 303.

[0026] like Figure 4As shown, the stretching part includes a connecting block 304, on which a screw rod 305 is movably screwed, and one end of the screw rod 305 is movably connected to the side of the bottom support plate 301. To ensure that the connecting block 304 can move horizontally, a guide rod 306 is fixed to the side of the connecting block 304, and the guide rod 306 is movably plugged into the bottom support plate 301.

[0027] Specifically, when in use, open the box door and pull the placement device 2 out of the box, cut the plastic wrap into a specified length, place both sides of the plastic wrap on the top of the bottom support plate 301 (the plastic wrap is located between the two screws 303), then insert the pressure plate into the screw 303, rotate and tighten the nut until the pressure plate squeezes the plastic wrap, rotate the screw 305, and when the screw 305 rotates, it drives the bottom support plate 301 on that side to move outward until the plastic wrap is straightened to avoid wrinkles when covering.

[0028] In another embodiment of the present scheme, two limiting rods 302 are fixed on the top of the bottom support plate 301, and two through holes are opened on the plate body of the pressure plate, which are adapted to the limiting rods 302. Before installing the cling film, the cling film cut into a specified length is first cut into limiting holes at appropriate positions, and the through holes on both sides of the cling film are respectively inserted into the limiting rods 302 to achieve preliminary limiting of the cling film and prevent the cling film from shifting when fixed, thereby facilitating the subsequent compression and stretching of the cling film.

[0029] A top support member is provided at the top of the vertical tube 202, wherein the top support member includes a fixed plate 503, and an annular pressure plate 401 is provided at the bottom of the fixed plate 503, and the annular pressure plate 401 is located directly above the water cup 8. In addition, the top support member also includes a number of socket rods 502 of the same number as the vertical tube 202, and a slot is provided at the top of the vertical tube 202. The socket rod 502 is movably connected to the slot, and a spring is fixed between the bottom wall of the slot and the bottom end of the socket rod 502. A cross bar 501 is fixed between the transverse socket rods 502, and the fixed plate 503 is fixed between the two cross bars 501. When the annular pressure plate 401 moves downward, it can squeeze the edge of the water cup 8.

[0030] In order to prevent the water cup 8 from being damaged due to excessive pressure between the annular pressure plate 401 and the water cup 8, a pressure sensor 402 is fixed to the top of the annular pressure plate 401, and a connecting plate 403 is fixed to the top of the pressure sensor 402. The connecting plate 403 is fixed to the fixing plate 503.

[0031] To supplement this solution, the cling film is fixed on the placement device 2, and the tension of the cling film is tested by the tensioner when the cling film is stretched until the tension of the cling film meets the test requirements. The placement device 2 is pushed into the detection box body 1 and the box door is closed. The controller controls the bottom hydraulic cylinder 7 to extend, and the bottom hydraulic cylinder 7 drives the movable plate 6 and the water cup 8 to move upward until the top of the water cup 8 contacts the bottom of the cling film. The controller controls the top hydraulic cylinder 9 to extend, and the telescopic end of the top hydraulic cylinder 9 squeezes the fixed plate 503, and the socket rod 5 02 and the annular pressure plate 401 move downward, and the annular pressure plate 401 squeezes the top of the cup rim of the water cup 8 to achieve a seal on the top of the water cup 8. When the pressure value of the pressure sensor 402 reaches the set value, the controller controls the top hydraulic cylinder 9 to stop working, and controls the temperature and humidity in the detection box body 1 through the controller. After a period of time, the box door is opened, and the water cup 8 is taken out. Finally, the water cup 8 is weighed. According to the front and back weights of the water cup 8 and the coverage area of ​​the plastic wrap on the top of the water cup 8, the moisture permeability is obtained through relevant calculations.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A placement tool for detecting the moisture permeability of a cling film, comprising a detection box body (1), characterized in that: A placement device (2) is provided in the detection box body (1); The placement device (2) comprises two sliders (201), at least two vertical tubes (202) are fixed to the bottoms of the two sliders (201) on opposite sides, a pressing assembly is provided between the vertical tubes (202) on one side, and a stretching portion is provided on the side of one of the pressing assemblies; A top support member is provided at the top of the vertical tube (202), and the top support member includes a fixing plate (503). An annular pressing plate (401) is provided at the bottom of the fixing plate (503), and the annular pressing plate (401) is located directly above the water cup (8).

2. The placement tool for detecting the moisture permeability of cling film according to claim 1, characterized in that: The pressing assembly comprises a bottom support plate (301), a plurality of screw rods (303) are fixed to the top of the bottom support plate (301), a pressure plate is movably provided on the top of the bottom support plate (301), the screw rods (303) are movably plugged into the pressure plate, and a fastening nut is screwed onto the rod body of the screw rod (303).

3. The placement tool for detecting the moisture permeability of cling film according to claim 2, characterized in that: A plurality of limiting rods (302) are fixed to the top of the bottom support plate (301), and a plurality of through holes are opened on the plate body of the pressure plate, and the through holes are adapted to the limiting rods (302).

4. The placement tool for detecting the moisture permeability of cling film according to claim 2, characterized in that: The stretching portion comprises a connecting block (304), a screw rod (305) being movably screwed onto the connecting block (304), one end of the screw rod (305) being movably connected to the side surface of the bottom support plate (301), a guide rod (306) being fixed to the side surface of the connecting block (304), and the guide rod (306) being movably plugged into the bottom support plate (301).

5. The placement tool for detecting the moisture permeability of cling film according to claim 1, characterized in that: The top support member further includes a plurality of socket rods (502) of the same number as the vertical tube (202), a slot is provided at the top of the vertical tube (202), the socket rods (502) are movably connected to the slot, and a spring is fixed between the bottom wall of the slot and the bottom end of the socket rod (502); A crossbar (501) is fixed between the transverse socket rods (502), and a fixing plate (503) is fixed between the two crossbars (501).

6. The placement tool for detecting the moisture permeability of cling film according to claim 1, characterized in that: A pressure sensor (402) is fixed to the top of the annular pressure plate (401), a connecting plate (403) is fixed to the top of the pressure sensor (402), and the connecting plate (403) is fixed to the fixing plate (503).

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