CN219552314U - Packaging film high temperature resistance testing arrangement - Google Patents

Abstract

The utility model relates to a packaging film high temperature resistance testing device, comprising: the device comprises a base, a test box, a sealing cover, a guide rod, a placing plate, a lower limiting block, an upper limiting block, an inner guide wheel, an outer guide wheel, a traction rope, a winding motor and a heating element. Wherein: the test box is fixed on the base, and the sealing cover is rotatably connected to the upper end box opening of the test box; the guide rod is vertically fixed in the inner cavity of the test box, and the placing plate is sleeved on the guide rod in a sliding manner. The inner guide wheel and the outer guide wheel are respectively connected to the inner wall and the outer wall of the test box. One end of the traction rope is connected with the upper surface of the placing plate, and the other end of the traction rope sequentially bypasses the inner guide wheel, the side wall of the test box and the outer guide wheel and then is connected with the winding motor fixed on the base. The heating element is arranged in the base or at the bottom of the inner cavity of the test box. The testing device can lift the sample placing plate from the lower part of the testing box to the box opening after the testing is finished, and is convenient for operators to take down the sample rapidly.

Description

Packaging film high temperature resistance testing arrangement

Technical Field

The utility model relates to the field of packaging film testing equipment, in particular to a packaging film high temperature resistance testing device.

Background

Plastic flexible packaging films have been widely used in various fields of chemical industry, food, medicine, etc., including plastic films of various types and properties made of polyethylene, polypropylene, polystyrene, polyvinyl chloride and other resins. For some plastic packaging films (such as food packaging films requiring heating) which are required to be used at high temperature, high temperature resistance tests are required to be performed at the stages of research and development tests, before delivery and the like so as to evaluate whether the packaging films meet the use conditions. The current test equipment mainly adopts a mode of putting a sample to be tested into a test box with a heating and heat preservation function, taking out the sample after the temperature and heat preservation are set for a set time, and evaluating the sample, for example, patent documents with application numbers of 202220626914.9 and 202222004004. X.

However, when the device is actually applied, the sealing cover of the test box needs to be opened after the experiment is finished, and the sample in the test box can be taken out after the temperature of the test box is reduced, otherwise, the risk of scalding operators is easy to occur. But this causes problems: on the one hand, the waiting process is longer, so that the test efficiency is affected, and especially when the number of samples to be tested is larger. On the other hand, the process of waiting to cool down is equivalent to prolonging the test time, and the cooling is greatly influenced by environmental factors after the cover body is opened, so that the test conditions of different test samples are changed, the obtained test results have large interference, and the comparison of high temperature resistance is not easy to directly compare, so that better products are screened, and great interference is caused to research and development personnel.

Disclosure of Invention

According to the high-temperature-resistant testing device for the packaging film, which is disclosed by the utility model, the sample placing plate can be lifted to the box opening from the lower part of the testing box after the testing is finished, so that an operator can conveniently and quickly take down the sample. In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a packaging film high temperature resistance testing device, comprising: the device comprises a base, a test box, a sealing cover, a guide rod, a placing plate, a lower limiting block, an upper limiting block, an inner guide wheel, an outer guide wheel, a traction rope, a winding motor and a heating element. Wherein: the test box is fixed on the base, and the sealing cover is rotationally connected to the upper end box opening of the test box. The guide rod is vertically fixed in the inner cavity of the test box, and the placing plate is sleeved on the guide rod in a sliding way by utilizing the sliding holes on the plate surface of the placing plate so as to slide vertically along the guide rod, and the edge of the placing plate is in sliding contact with the inner wall of the test box. The lower limiting block and the upper limiting block are respectively fixed on the side wall and the top end of the lower part of the guide rod. The inner guide wheel and the outer guide wheel are respectively connected to the inner wall and the outer wall of the test box in a rotating way, and the upper limiting block is lower than the inner guide wheel. One end of the traction rope is connected with the upper surface of the placing plate, and the other end of the traction rope sequentially bypasses the inner guide wheel, the side wall of the test box and the outer guide wheel and then is connected with the winding motor fixed on the base. The heating element is arranged in the base or at the bottom of the inner cavity of the test box and is used for heating the sample placed on the plate in the test box.

Further, the two sides of the lower surface of the placing plate are provided with balancing weights so as to facilitate the placing plate to fall down.

Further, a temperature sensor is fixed on the inner side wall of the test box and is connected with a controller panel fixed on the outer wall of the base, the winding motor and the heating element are connected with the controller panel, the controller panel is provided with a control button and a display screen, and the control button is used for controlling the winding motor and the heating element to be started or stopped, the heating temperature and the heating time to be set, and the like.

Further, the inner guide wheel and the outer guide wheel comprise U-shaped wheel frames, rotating shafts and wheel bodies. Wherein: the U-shaped wheel frame is fixed on the side wall of the test box, and the wheel body is vertically and rotatably connected to the U-shaped wheel frame through a rotating shaft.

Further, a group of inner guide wheels and outer guide wheels are arranged on the left side wall of the test box, a group of inner guide wheels and outer guide wheels are also arranged on the right side wall of the test box, and the two groups of inner guide wheels and outer guide wheels are symmetrically arranged.

Further, the upper surface of the placing plate is provided with a connecting ring, the upper surfaces of the left end and the right end of the placing plate are respectively provided with two connecting rings, the two connecting rings at each end are distributed in a front-back symmetrical mode, and the two connecting rings are respectively connected with the two branches at one end of the traction rope so as to be more stable when the placing plate is lifted.

Further, four corners of the placing plate are arc-shaped corners, and ventilation holes are formed in the corners of the placing plate and the corners of the test box.

Further, the bottom surface of the test box is provided with a support column, so that the bottom surface of the test box is prevented from being contacted with an underlying experiment table surface.

Further, a water pipe is arranged in the base to control the heating temperature in the test box.

Further, a heat insulation layer is connected to the inner wall of the test box and the lower surface of the sealing cover in a covering manner so as to reduce heat dissipation in the test box.

Compared with the prior art, the utility model has the following beneficial effects:

according to the packaging film high temperature resistance testing device, the plastic film sample to be tested is placed by the placing plate capable of ascending and descending, so that the placing plate can be lifted to the box opening of the testing box after the testing is finished, an operator can conveniently take down the tested sample by using clamps such as tweezers, and the risk of scalding the operator can be effectively reduced because the operator does not need to stretch hands into the testing box to take out the sample. In addition, the sample can be taken out in time after the test is finished, so that the test conditions of different test samples can be kept the same to the greatest extent, the test accuracy is improved, more excellent products can be screened, the next sample can be tested on a horse after the sample is taken out, the test efficiency is improved, and the energy consumption is saved. In addition, the placing plate is lifted to the box opening of the test box to form a seal for the inner cavity of the test box, so that waste heat in the test box can be effectively isolated, the risk of scalding operators is reduced, and meanwhile, energy consumption is saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic view showing the internal structure of a packaging film high temperature resistance testing device in the following embodiment.

Fig. 2 is a top view of the test chamber in the following example.

Fig. 3 is a cross-sectional view of the base in the following embodiment.

Fig. 4 is a schematic view showing the connection of the placement plate and the pulling rope in the following embodiment.

The label marks in the figures represent: 1-base, 2-test box, 3-sealed lid, 4-guide bar, 5-place board, 6-lower stopper, 7-upper stopper, 8-inner guide wheel, 9-outer guide wheel, 10-tractive rope, 11-coiling motor, 12-heating element, 13-balancing weight, 14-temperature sensor, 15-controller panel, 16-control button, 17-display screen, 18- "U" shape wheel carrier, 19-pivot, 20-wheel body, 21-go-between, 22-support column, 23-water pipe, 501-slide hole, 502-arc angle, 503-bleeder vent.

Detailed Description

It should be noted that, for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only that the directions are consistent with the upper, lower, left, and right directions of the drawings themselves, and do not limit the structure, only for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to needs to have a specific orientation, and is constructed and operated in a specific orientation, and thus the limitation of the present utility model is not to be construed. The packaging film high temperature resistance testing device of the utility model is further described with reference to the specification, the drawings and the specific examples.

Referring to fig. 1 to 4, there is illustrated a packaging film high temperature resistance test apparatus including: the device comprises a base 1, a test box 2, a sealing cover 3, a guide rod 4, a placing plate 5, a lower limiting block 6, an upper limiting block 7, an inner guide wheel 8, an outer guide wheel 9, a traction rope 10, a winding motor 11 and a heating element 12. Wherein:

the base 1 is horizontally arranged, and has a heating function, for example, a heating element 12 such as a heating wire is embedded in the base 1, or the heating element 12 is arranged in the inner cavity of the base 1, or the heating element 12 such as a heating wire is arranged at the bottom of the inner cavity of the test box 2. The heating element 12 generates heat after being electrified to heat the sample to be tested in the test box 2. The lower port of the test box 2 is fixed on the upper surface of the base 1 in a sealing and welding manner, so that the heating element 12 is used for heating and testing the plastic packaging film sample to be tested in the test box 2. The sealing cover 3 is rotatably connected to the edge of the upper end box opening of the test box 2 through a hinge, so that the upper end box opening is sealed or opened, and samples are conveniently taken, placed and tested. The inner wall of the test box 2 and the lower surface of the sealing cover 3 are respectively covered and connected with a heat preservation layer so as to reduce heat dissipation in the test box 2, and meanwhile, the heat dissipation device is beneficial to preventing scalding of operators caused by overhigh temperature of the outer wall of the test box 2 and the outer wall of the sealing cover 3.

The guide rods 4 are vertically arranged metal polished rods, the lower ends of the guide rods are fixed in the inner cavity of the test box 2, and the four guide rods 4 are respectively distributed at four corners of the inner cavity of the test box 2. Four sliding holes 501 are formed in four corners of the surface of the placing plate 5 and correspond to the four guide rods 4 respectively, and the placing plate 5 is sleeved on the guide rods 4 in a sliding manner by the aid of the sliding holes 501 so as to slide vertically along the guide rods 4.

The lower limiting block 6 and the upper limiting block 7 are respectively fixed on the side wall and the top end of the lower portion of the guide rod 4, wherein the lower limiting block 6 is used for limiting the falling height of the placing plate 5, the upper limiting block 7 is used for limiting the rising height of the placing plate 5, and the guide rod 4, the placing plate 5, the limiting blocks, the guide wheels and the like are made of high-temperature-resistant steel materials and the like.

The inner guide wheel 8 and the outer guide wheel 9 are respectively fixed on the inner wall and the outer wall of the test box 2 in a rotating way, and the upper limiting block 7 is lower than the inner guide wheel 8. The left side wall of the test box 2 is provided with a group of inner guide wheels 8 and outer guide wheels 9, the right side wall of the test box 2 is also provided with a group of inner guide wheels 8 and outer guide wheels 9, and the two groups of inner guide wheels 8 and outer guide wheels 9 are symmetrically arranged. Specifically, referring to fig. 2, the inner guide wheel 8 and the outer guide wheel 9 each include a "U" shaped wheel frame 18, a rotating shaft 19, and a wheel body 20. Wherein: the U-shaped wheel frame 18 is fixed on the side wall of the test box 2, and the wheel body 20 is vertically and rotatably connected to the U-shaped wheel frame 1 through a rotating shaft 19. The winding motor 11 is fixed on the base 1 and is located outside the test box 2, specifically, the winding motor 11 includes a rotating motor and a winding wheel fixed on a motor shaft thereof, one end of the traction rope 10 is connected with the upper surface of the placement plate 5, and the other end sequentially bypasses the inner guide wheel 8, the through hole on the side wall of the test box 2 and the outer guide wheel 9 and then is connected with the winding wheel fixed on the base 1, so that when the winding motor 11 winds or releases the traction rope 10, the wheel body 20 is driven to rotate, and the traction rope 10 is enabled to run more smoothly.

When the device is used, a sample to be tested is firstly placed on the placing plate 5 for heating test, and the pulling rope 10 is wound on the winding wheel for tightening by the winding motor 11 after the completion of the heating test, so that the placing plate 5 can be pulled up to the box mouth of the test box 2 after the test is completed, an operator can take off the tested sample conveniently by using clamps such as forceps, and the risk of scalding the operator can be effectively reduced because the operator is not required to stretch hands into the test box 2 to take out the sample. In addition, because can in time take out the sample after the test finishes, not only can furthest make the test condition of different test samples keep the same, improve the precision of test, more be favorable to screening more excellent product, can carry out the test of next sample immediately after taking out the sample moreover, and because place board 5 rise to the case mouth department of test case 2 after the inner chamber formation closure of test case 2, can effectively keep apart the waste heat in the test case 2, when being favorable to reducing scalding operating personnel's risk, improve efficiency of software testing, save the energy consumption.

Referring to fig. 1, in another embodiment, in the packaging film high temperature resistance testing device shown in the foregoing embodiment, two sides of the lower surface of the placing plate 5 are provided with steel balancing weights 13, so that when the winding motor 11 releases the pulling rope 10, the placing plate 5 automatically falls to the lower limit block 6 under the action of gravity of the balancing weights 13, and at this time, a certain space is provided between the placing plate 5 and the bottom surface of the testing box 2, so that the placing plate 5 is heated more uniformly.

Referring to fig. 2 and 4, in another embodiment, in the packaging film high temperature resistance testing device shown in the foregoing embodiment, the upper surface of the placement plate 5 is provided with a connection ring 21, and the upper surfaces of the left end and the right end of the placement plate 5 are respectively provided with two connection rings 21, the two connection rings 21 at each end are symmetrically distributed front and back, and the two connection rings 21 are respectively connected with two branches at one end of the pulling rope, so as to be more stable when lifting the placement plate 5.

Referring to fig. 2, in another embodiment, in the packaging film high temperature resistance testing device shown in the foregoing embodiment, four corners of the placing plate 5 are arc-shaped corners 502, and ventilation holes 503 are formed at the corners of the testing box 2, so that when the placing plate 5 moves vertically, the air pressures at the upper and lower sides are balanced, which is beneficial to reducing the resistance when the placing plate 5 is lifted.

Referring to fig. 1, in another embodiment, in the packaging film high temperature resistance testing device shown in the foregoing embodiment, a temperature sensor 14 is fixed on an inner side wall of the testing box 2, and the temperature sensor 14 is connected with a controller panel 15 fixed on an outer wall of the base 1, the winding motor 11 and the heating element 12 are both connected with the controller panel 15, the controller panel 15 is provided with a control button 16 and a display screen 17, and the control button 16 is used for controlling the winding motor 11, the heating element 12 to be turned on and off, setting a heating temperature, a heating time, and the like. The set number of turns of the winding motor 11 can control the ascending or descending height of the placement plate 5, or the winding motor 11 can be turned off after the placement plate 5 is manually observed to ascend or descend to a proper position. Preferably, the winding motor 11 has an overload function, and when the winding motor 11 detects that the placing plate 5 is lifted up by pulling the rope 10 to the position where the upper limit block 7 cannot be lifted up continuously, the overload function is started, the winding motor 11 stops rotating continuously, and such motors are widely used, and commercial products can be directly adopted, and the embodiment will not be described in detail.

Referring to fig. 1, in another embodiment, in the packaging film high temperature resistance testing device shown in the above embodiment, the bottom surface of the testing box 2 is provided with a support column 22, so as to prevent the bottom surface of the testing box 2 from contacting with the test table surface below, and help to prevent damage to the test table surface.

Referring to fig. 2, in another embodiment, in the packaging film high temperature resistance testing device according to the above embodiment, a water pipe 23 is disposed in the base 1, and when in use, one end of the water pipe 23 is connected to a faucet, so that flowing cold water can be introduced into the water pipe 23 to control the heating temperature in the test box 2.

Finally, it should be noted that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. A packaging film high temperature resistance testing device, comprising: the device comprises a base, a test box, a sealing cover, a guide rod, a placing plate, a lower limiting block, an upper limiting block, an inner guide wheel, an outer guide wheel, a traction rope, a winding motor and a heating element; wherein: the test box is fixed on the base, and the sealing cover is rotatably connected to the upper end box opening of the test box; the guide rod is vertically fixed in the inner cavity of the test box, the placing plate is sleeved on the guide rod in a sliding way by utilizing a sliding hole on the plate surface of the placing plate, and the edge of the placing plate is in sliding contact with the inner wall of the test box; the lower limiting block and the upper limiting block are respectively fixed on the side wall and the top end of the lower part of the guide rod; the inner guide wheel and the outer guide wheel are respectively connected to the inner wall and the outer wall of the test box in a rotating way, and the upper limiting block is lower than the inner guide wheel; one end of the traction rope is connected with the upper surface of the placing plate, and the other end of the traction rope sequentially bypasses the inner guide wheel, the side wall of the test box and the outer guide wheel and then is connected with the winding motor fixed on the base; the heating element is arranged in the base or at the bottom of the inner cavity of the test box.

2. The packaging film high temperature resistance testing device according to claim 1, wherein the two sides of the lower surface of the placing plate are provided with balancing weights.

3. The packaging film high temperature resistance testing device according to claim 1, wherein the inner guide wheel and the outer guide wheel comprise a U-shaped wheel frame, a rotating shaft and a wheel body; wherein: the U-shaped wheel frame is fixed on the side wall of the test box, and the wheel body is vertically and rotatably connected to the U-shaped wheel frame through a rotating shaft.

4. The packaging film high temperature resistance testing device according to claim 1, wherein a group of inner guide wheels and outer guide wheels are arranged on the left side wall of the testing box, a group of inner guide wheels and outer guide wheels are also arranged on the right side wall of the testing box, and the two groups of inner guide wheels and outer guide wheels are symmetrically arranged.

5. The device for testing the high temperature resistance of the packaging film according to claim 4, wherein the upper surface of the placing plate is provided with a connecting ring, the upper surfaces of the left end and the right end of the placing plate are respectively provided with two connecting rings, the two connecting rings at each end are symmetrically distributed in front-back, and the two connecting rings are respectively connected with two branches at one end of the traction rope.

6. The packaging film high temperature resistance testing device according to claim 1, wherein four corners of the placing plate are arc-shaped corners, and ventilation holes are formed in the corners of the testing box.

7. The packaging film high temperature resistance testing device according to claim 1, wherein a temperature sensor is fixed on the inner side wall of the testing box and is connected with a controller panel fixed on the outer wall of the base, the winding motor and the heating element are both connected with the controller panel, and the controller panel is provided with a control button and a display screen.

8. The packaging film high temperature resistance testing device according to any one of claims 1 to 7, wherein the testing box has a support column on a bottom surface thereof.

9. The packaging film high temperature resistance testing device according to any one of claims 1 to 7, wherein a water pipe is provided in the base.

10. The packaging film high temperature resistance testing device according to any one of claims 1 to 7, wherein a heat preservation layer is connected to the inner wall of the testing box and the lower surface of the sealing cover in a covering manner.