CN212621781U - Device for preparing flame-retardant test sample strips - Google Patents

Abstract

The utility model provides a device of flame retardant test spline preparation belongs to censorship sample preparation equipment field. The device comprises a cutting machine, a feeding device and a discharging device, wherein the cutting machine is used for cutting the whole surface of the plastic shell to obtain a primary material; the high-temperature softening equipment is used for softening the primary material at high temperature; hot cutting equipment for pressing the softened primary material into a mold having at least one sample groove of a size matching that of a standard test sample bar; and the cooling equipment is used for cooling and forming the test sample strip. The utility model cuts the three-dimensional plastic shell into a larger plane by the cutting machine, and the cutting precision is not high in the process, so that the cutting machine is more flexible and faster in action during operation; after the plastic shell is heated and softened, the plastic shell is directly pressed into a sample groove with a standard size, so that a final test sample bar is ensured to have an accurate size, and the test requirements are met.

Description

Device for preparing flame-retardant test sample strips

Technical Field

The utility model relates to a censorship sample preparation equipment field especially relates to a device of fire-retardant test spline preparation.

Background

The plastic shell of the storage battery comprises a groove body and a cover plate, and the groove body and the cover plate are both made of plastic materials. When the storage battery is ignited due to internal or external reasons, the flame retardant property of the plastic shell of the storage battery is tested. According to relevant standard regulations, the cell body and the cover sheet of the storage battery are used for carrying out the experiment in the fire resistance experiment of the storage battery, but in the actual experiment process, the cell body or the cover sheet of the storage battery is required to be rapidly and strictly made into the size, the thickness and other requirements required by the standard, and the operation is not easy.

In the past test sample strip preparation, a storage battery plastic shell is generally cut into a sheet-shaped rectangle by using a cutting machine, then lineation is carried out according to the required size, then cutting is carried out by using scissors, and finally the sample strip is polished. Because the groove body and the cover plate of the storage battery are made of harder materials and have relatively complex three-dimensional structures instead of simple planar structures, the manual preparation process has the problems of inconvenient operation and difficulty in controlling precision, the preparation process is time-consuming and labor-consuming, and finally prepared sample strips cannot accurately meet the standard requirements.

In view of the above, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of fire-retardant test spline preparation, the device not only can make experimental spline fast, and the size precision of experimental spline is high, satisfies experimental requirement.

In order to achieve the above object, the utility model adopts the following technical means:

an apparatus for preparing a flame retardant test strip, comprising:

the cutting machine is used for cutting the whole surface of the plastic shell to obtain a primary material;

the high-temperature softening equipment is used for softening the primary material at high temperature;

hot cutting equipment for pressing the softened starting material into a mold having at least one sample groove of a size matching that of a standard test strip; and

and the cooling equipment is used for cooling and forming the test sample strip.

As a further improvement, the high-temperature softening apparatus includes an environmental test chamber;

the environment test chamber is provided with a high-temperature chamber and an operation table, the high-temperature chamber is provided with a chamber door, and the chamber door is provided with an explosion-proof glass window and a handle.

As a further improvement, the internal dimensions of the high-temperature box are as follows: 50cm by 50 cm.

As a further improvement, the standard dimensions of the test bars are: the length is 125mm plus or minus 5mm, the width is 13.0mm plus or minus 0.5mm, and the thickness is not more than 13 mm.

As a further improvement, the die is rectangular, four sample grooves are arranged on the die in total, and the four sample grooves are arranged on the die in the transverse direction.

As a further improvement, the dimensions of the mold are: the length is 130mm, and the width is 54 mm.

As a further improvement, the thermal cutting equipment comprises a numerical control hydraulic machine, the numerical control hydraulic machine comprises a press machine and a numerical control table, the press machine is provided with a pressing space, and the pressing space is used for placing the die and the initial material and completing pressing forming.

As a further improvement, the cooling apparatus includes a cold water tank for rapidly water-cooling the test bars.

Compared with the prior art, the utility model discloses bring following technological effect:

the utility model cuts the three-dimensional plastic shell into a larger plane by the cutting machine, and the cutting precision is not high in the process, so that the cutting machine is more flexible and faster in action during operation; after the plastic shell is heated and softened, the plastic shell is directly pressed into a sample groove with a standard size, so that a final test sample bar is ensured to have an accurate size, and the test requirements are met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 shows a block diagram of an apparatus for preparing a flame-retardant test sample strip according to the present invention;

figure 2 shows a block diagram of the mould of the invention;

fig. 3 shows a flow chart of a method for preparing a flame-retardant test sample strip according to the present invention.

Description of the main element symbols:

100-a device for preparing a flame-retardant test sample strip; 101-a frame; 10-an electric cutter; 11-a cutting platform; 12-a blade; 20-environmental test chamber; 22-an operation table; 23-a box door; 24-explosion-proof glass windows; 25-a handle; 30-a numerical control hydraulic press; 31-a press machine; 32-a numerical control console; 33-a pressing space; 40-a mould; 41-sample groove; 50-a cold water tank.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 and 2, an embodiment of the present invention discloses a device 100 for preparing a flame retardant test sample strip, which is applied to the field of inspection sample preparation equipment, especially to the preparation equipment of a battery plastic shell test sample strip, and can realize the purpose of rapidly preparing a test sample strip with accurate size.

The device 100 for preparing the flame-retardant test sample strip comprises a cutting machine, high-temperature softening equipment, hot cutting equipment and cooling equipment.

Specifically, the device 100 for preparing the flame-retardant test sample strip comprises a frame 101 and a machine table (not labeled in the figure) arranged at the top of the frame 101, wherein the machine table is divided into a cutting area, a softening area, a press forming area and a cooling area, and the cutting machine, the high-temperature softening equipment, the thermal cutting equipment and the cooling equipment are respectively and correspondingly arranged in the areas. The cutting area and the press forming area are respectively arranged on two sides of the machine table, the softening area and the cooling area are arranged in the middle of the machine table, the area division mode is reasonable, the front working procedure and the rear working procedure are connected in the spatial position, the distance and the time of intermediate transfer are reduced, and the preparation efficiency is improved.

The cutting machine is installed in the cutting zone, specifically, the cutting machine is electronic cutting machine 10, including cutting platform 11 and blade 12. The electric cutting is flexible and convenient, and is more suitable from the aspects of cost and use maneuverability when the requirement on cutting errors is not strict and batch work is not considered. The electric cutting machine 10 is used for cutting the whole plastic shell to obtain a primary material; the initial material is a whole plastic shell surface of one block, and the outline of the whole plastic shell surface covers or exceeds the outline of a standard test sample strip; the area of the whole surface of the plastic shell is at least the area of two standard test sample bars. The plastic shell is only cut in the whole surface in the cutting area, so that the cutting precision is not high, the error requirement is not strict, the placing posture of the plastic shell in the three-dimensional shape in the cutting area is relatively simple, the operation is simplified, the cutting speed is accelerated, and the efficiency is improved.

The high-temperature softening equipment is arranged in the softening area and is used for performing high-temperature softening on the primary material. Specifically, the high-temperature softening equipment comprises an environmental test chamber 20 or other equipment capable of heating the plastic shell at a constant temperature.

The environmental test chamber 20 is provided with a high temperature chamber and an operation table 22, the high temperature chamber is provided with a chamber door 23, and the chamber door 23 is provided with an explosion-proof glass window 24 and a handle 25. The high temperature chamber has an internal space, and the cut starting material is placed in the high temperature chamber, and then heated at a set temperature on the table 22, and after a period of time, the starting material is softened. The handle 25 is used for opening or closing the box door 23, and the explosion-proof glass window 24 is used for observing the softening condition of the primary material in the high-temperature box.

The inner space of the high-temperature chamber is sized to sufficiently accommodate the starting materials, and generally, the high-temperature chamber is sized to simultaneously soften a plurality of starting materials. Exemplary, the standard dimensions of the test bars are: the length is 125mm plus or minus 5mm, the width is 13.0mm plus or minus 0.5mm, and the thickness is not more than 13 mm; the internal dimension of the high-temperature box is as follows: 50cm by 50 cm.

It is worth mentioning that the test bars shown are not limited to the rectangular plate and the specific dimensions mentioned above, but may also be other geometrical shapes and corresponding dimensions, such as arcs, circles or other irregular shapes.

Referring to fig. 2, the hot cutting apparatus is installed in a press forming area for pressing a softened preform into a mold 40, the mold 40 having at least one sample groove 41 matching the size of a standard test bar. Illustratively, the mold 40 is provided with four sample grooves 41, and the four sample grooves 41 are transversely arranged on the mold 40. The dimensions of each sample groove 41, which are matched to the above-mentioned standard-sized test bars, are: the length is 125mm plus or minus 5mm, the width is 13.0mm plus or minus 0.5mm, and the thickness is not more than 13 mm; thus, the dimensions of the entire mold 40 are: the length is 130mm, and the width is 54 mm. It should be noted that the size of the primary material is equivalent to the size of the mold 40, and the primary material is preferably placed vertically in the high temperature box, so that a plurality of primary materials can be prevented from being stacked.

Specifically, in this embodiment, the thermal cutting device is a numerical control hydraulic press 30, the numerical control hydraulic press 30 includes a press machine 31 and a numerical control table 32, the press machine 31 is provided with a pressing space 33, and the pressing space 33 is used for placing the mold 40 and the initial material and completing the pressing and forming. The pressing process is described as follows: the numerical control table 32 is located on the right side of the press machine 31 and is provided with parameters such as a nominal force P, a slide stroke S, a sliding speed v and the like. The mold 40 is placed at the bottom of the pressing space 33 with the sample groove 41 facing upward; the initial material is placed above the die 40, after the parameters are set, the pressing plate presses the initial material from top to bottom, and the initial material is in a softened state, so that the initial material can be extruded and filled into the sample groove 41, and the pressing is completed.

During pressing, some sample strips may be insufficiently pressed or some sample strips may be partially separated from the mold 40, and the separated material or the insufficient plastic shell material may be further pressed in the mold 40 through an artificial treatment.

And the cooling equipment is arranged in the cooling area and is used for cooling and forming the test sample strip.

Illustratively, the cooling apparatus includes a cold water tank 50. The plastic shell is subjected to rough processing, softening and compression molding to form a sample strip which approximately meets the requirement of a flame-retardant experiment size, and the sample strip needs to be cooled because the former two steps of processing are carried out at the high temperature of softening the plastic shell. The pressed sample strip is in a high-temperature state in the mold 40, the mold 40 is taken out and placed in the cold water tank 50, and the sample strip is rapidly cooled and formed.

It should be noted that in this embodiment, in order to cool and form the sample strip at the fastest speed, a water cooling method is adopted, and in other embodiments, an air cooling method, such as blowing a fan to cool the sample strip, may also be adopted, but the cooling speed in this method is slower than that in the water cooling method.

In order to make the shape and size of the finally prepared test sample strip more standard, after the sample strip is cooled to normal temperature, the sample strip is taken out from the die 40 and wiped dry, the detail is repaired, and the places such as burrs, thick edges and the like which do not meet the test requirements are adjusted by a file or gauze.

Example two

Referring to fig. 3, the present embodiment discloses a method for preparing a flame retardant test sample strip, which includes the following steps:

s1, rough machining: cutting the whole plastic shell to obtain a primary material;

s2, heating and softening: softening the primary material;

s3, press forming: pressing the softened initial material into a sample groove 41 of a mold 40 to obtain a test sample strip, wherein the sample groove 41 has a size matched with that of a standard test sample strip;

and S4, cooling and hardening to obtain a final test sample.

Because the test sample strip is prepared by adopting a hot-state press forming process instead of repeatedly cutting and cutting like the prior art, the requirement on cutting precision is not high in the process of roughly processing the plastic shell, and the cutting equipment is more flexible to operate and has higher speed. And the softened initial material is pressed into the sample groove 41 of the die 40, so that the finally formed sample strip can be ensured to have higher dimensional precision, and the requirement of a flame retardant test is met.

Further, the size of the initial material is matched with the size of the die 40. The mold 40 is manufactured in advance of the manufacturing process, and the mold 40 is typically sized to fit several standard test bars, as in example one: the length is 130mm, and the width is 54 mm. In the rough machining process, the size of the initial material is intentionally controlled to be matched with the size of the die 40, so that less manual treatment in the subsequent compression molding step is facilitated, and the working efficiency is improved to a certain extent.

Further, during the rough machining, the whole surface cutting is performed with the die 40 as a reference. Illustratively, two square edges may be cut from the initial material, and then the die 40 is attached to one square edge to cut the other square edge. The processing method directly utilizes the die 40 without an additional tool such as a reference ruler; in addition, the size of the preform obtained with the mold 40 as a reference can be ensured to match the mold 40.

It should be noted that, in the heat softening step, the temperature setting depends on the specific material of the plastic housing. Generally, the plastic shell of the storage battery is made of one or more of ABS, PS and PP, and the materials can be rapidly softened in the range of 150-200 ℃, so that the heating softening temperature is 150-200 ℃. The heating and softening device adopts an environmental test chamber 20 or other devices capable of constant temperature heating.

Preferably, in the compression molding process, a phenomenon that some sample strips are insufficient in material or part of the material is separated from the mold 40 may occur, and the separated material or the insufficient plastic shell material is continuously compressed in the mold 40 through artificial treatment, so as to ensure that the finally obtained test sample strips have complete shapes and reach the standard, and avoid the defects of potholes and the like.

The cooling hardening process includes cooling the test specimens by water cooling or air cooling. The water cooling can adopt a cold water tank 50, and the air cooling can adopt a fan, so that the purpose of cooling and forming the high-temperature test sample strip can be achieved. Of course, water cooling is used at a faster rate than air cooling, which is cleaner than water cooling.

As a further improvement, a finishing step is further included after the cooling hardening process: and after the test sample strip is wiped or dried, edging the test sample strip to enable the final test sample strip to be more fine in appearance. Specifically, the edging treatment step comprises processing burrs and thick edges on the test sample strips by using a file or abrasive cloth.

Of course, if the cooling hardening is performed by air cooling, the step of drying or drying may be omitted.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (8)

1. An apparatus for preparing a flame retardant test sample strip, comprising:

the cutting machine is used for cutting the whole surface of the plastic shell to obtain a primary material;

the high-temperature softening equipment is used for softening the primary material at high temperature;

hot cutting equipment for pressing the softened starting material into a mold having at least one sample groove of a size matching that of a standard test strip; and

and the cooling equipment is used for cooling and forming the test sample strip.

2. The apparatus for flame-retardant test bar preparation according to claim 1, wherein said high-temperature softening device comprises an environmental test chamber;

the environment test chamber is provided with a high-temperature chamber and an operation table, the high-temperature chamber is provided with a chamber door, and the chamber door is provided with an explosion-proof glass window and a handle.

3. The apparatus for flame-retardant test bar preparation according to claim 2, wherein the inside dimensions of said high-temperature oven are: 50cm by 50 cm.

4. An apparatus for producing flame-retardant test bars according to claim 1, characterized in that the standard dimensions of the test bars are: the length is 125mm plus or minus 5mm, the width is 13.0mm plus or minus 0.5mm, and the thickness is not more than 13 mm.

5. The apparatus for producing flame retardant test bars according to claim 1 or 4, wherein said mold has a rectangular shape on which a total of four said sample grooves are provided, said four sample grooves being arranged laterally on the mold.

6. The apparatus for preparing flame retardant test bars according to claim 5, characterized in that the dimensions of the mold are: the length is 130mm, and the width is 54 mm.

7. The device for preparing the flame-retardant test sample strips as defined in claim 1, wherein the thermal cutting equipment comprises a numerical control hydraulic press, the numerical control hydraulic press comprises a press machine and a numerical control table, the press machine is provided with a pressing space, and the pressing space is used for placing the die and the initial material and completing the pressing forming.

8. The apparatus for preparing a flame retardant test spline according to claim 1, wherein the cooling device comprises a cold water tank for rapidly water-cooling the test spline.

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