Hot melt adhesive low-temperature-resistant flexible sample preparation tool for fixing storage battery

Abstract

A hot melt adhesive low-temperature-resistant flexible sample preparation tool for fixing a storage battery comprises a heating plate located at the bottom, a stainless steel sheet arranged on the upper surface of the heating plate and a pressing assembly used for pressing the stainless steel sheet, and four-corner screws used for leveling the levelness of the heating plate are installed at the four corners of the heating plate; the pressing assembly comprises a pressing plate, a positioning screw and a nut installed on the positioning screw, lower positioning holes / grooves are formed in the two ends of the pressing plate, upper positioning holes / grooves are formed in the two ends of the stainless steel sheet, and the upper positioning holes / grooves and the lower positioning holes / grooves are in butt joint to form complete positioning holes / grooves. A sample preparation hole is formed in the middle of the stainless steel sheet, the width, length and thickness of the sample preparation hole are consistent with the size of a prepared sample, and a receding hole is formed in the middle of the pressing plate. According to the utility model, through the design of the sample preparation hole with the specified size, the sample is formed at one time; the hot melt adhesive is scraped flat in an open environment through the scraping plate, air in the groove can be fully removed, it is further guaranteed that the thickness of a sample is uniform, no bubble exists, and therefore the accuracy of the low-temperature-resistant flexibility test of the hot melt adhesive is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot melt adhesive material detection for lead-acid battery fixing, and in particular relates to a hot melt adhesive sample preparation tool for battery fixing. Background Art

[0002] Lead-acid batteries with high vibration resistance requirements generally use hot melt adhesive to fix the pole group. Low-temperature flexibility is an important indicator of hot melt adhesive performance. At present, in the test of hot melt adhesive low-temperature flexibility, the method of making hot melt adhesive samples is to drop completely melted hot melt adhesive on release paper, scrape the hot melt adhesive into a thin film with a scraper, and cut it into samples of the required size after cooling; or pour the completely melted hot melt adhesive into a mold of a specified size, and then extrude the hot melt adhesive to fill the cavity. The existing sample preparation tooling does not take into account that the hot melt adhesive will gradually cool down and lose fluidity during the sample preparation process, resulting in uneven sample thickness. The method of pressing plate extrusion is adopted. Although samples with uniform thickness can be prepared, the gas in the mold cannot be completely removed during the extrusion process, which will cause bubbles inside the sample, which will also affect the measurement results. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a low-temperature resistant flexible sample preparation tooling for hot melt adhesive for fixing lead-acid batteries, which changes the previous sample preparation method with uneven sample thickness and bubbles. The temperature of the hot melt adhesive during the sample preparation process is controlled by a heating plate to ensure the fluidity of the hot melt adhesive, so that it can completely fill the entire mold through its own flow, ensuring that the sample thickness is uniform and there are no bubbles.

[0004] The technical scheme of the utility model is as follows: it comprises a heating plate located at the bottom, a stainless steel sheet placed on the upper surface of the heating plate, and a pressing assembly for pressing the stainless steel sheet, wherein four corner screws for adjusting the horizontality of the heating plate are arranged at the four corners of the heating plate; the pressing assembly comprises a pressing plate, a positioning screw, and a nut arranged on the positioning screw, lower positioning holes / grooves are arranged at both ends of the pressing plate, upper positioning holes / grooves corresponding to the lower positioning holes are arranged at both ends of the stainless steel sheet, and the upper positioning holes / grooves are butt-jointed with the lower positioning holes / grooves to form a complete positioning hole / groove; a sample preparation hole is arranged in the middle of the stainless steel sheet, and the width, length and thickness of the sample preparation hole are consistent with the size of the prepared sample, and a clearance hole for making way for the sample preparation hole is arranged in the middle of the pressing plate, and the width of the clearance hole is greater than the width of the groove of the stainless steel sheet, and the length of the clearance hole is greater than the length of the groove of the stainless steel sheet; during assembly, the positioning screw passes through the positioning hole / groove, and the stainless steel sheet is locked and fixed by the nut, and the bottom surface of the sample preparation hole is closed by the upper surface of the heating plate to form a sample preparation groove.

[0005] One side of the heating plate is connected to a temperature control device.

[0006] The stainless steel sheets are multiple sheets, and the sample preparation holes of each stainless steel sheet have different size specifications. Samples of different specifications can be prepared by replacing the stainless steel sheets.

[0007] It also includes a scraper for scraping the hot melt adhesive in the sample preparation groove, and the width of the scraper is larger than the groove width and smaller than the give way groove width.

[0008] The heating plate, the middle of the stainless steel sheet, the wall of the hole and the outer surface of the scraper are all sprayed with tetrafluoro paint.

[0009] There is at least one sample preparation hole in the middle of the stainless steel sheet.

[0010] The heating plate, stainless steel sheet, platen groove wall and scraper outer surface in the technical solution of the utility model are sprayed with tetrafluoroethylene paint (other types of demoulding agents can also be used) to prevent the hot melt adhesive from adhering to their surfaces, which is convenient for sample demoulding. The utility model makes the sample one-time molding by designing the sample preparation hole of the specified size; the hot melt adhesive is scraped flat by the scraper in an open environment, which can fully remove the air in the groove, further ensuring that the sample thickness is uniform and there are no bubbles, thereby ensuring the accuracy of the hot melt adhesive low temperature resistance flexibility test. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 yes Figure 1 Side view of

[0013] Figure 3 It is a schematic diagram of the structure of a stainless steel sheet;

[0014] Figure 4 It is a structural diagram of the scraper. DETAILED DESCRIPTION

[0015] Combined with the drawings in the embodiments of the utility model, the technical scheme in the embodiments of the utility model is clearly and completely described. An embodiment of the utility model is a hot melt adhesive low temperature resistant flexible sample making tool for battery fixing, comprising a pressing plate 1, a stainless steel sheet 2, a heating plate 3, a temperature control device 4, and a scraper 5.

[0016] The four corners of the heating plate 3 are provided with leveling screws for adjusting the level of the heating plate, and positioning screws are provided at both ends of the heating plate. The heating plate 3 is connected to the temperature control device 4, which can heat the hot melt adhesive to prevent the hot melt adhesive from solidifying too quickly during the sample preparation process, ensure the fluidity of the hot melt adhesive, and make it completely fill the entire mold through its own flow, ensuring that the thickness of the sample is uniform and there are no bubbles. The stainless steel sheet 2 is placed above the heating plate, and positioning holes are provided at both ends of the stainless steel sheet 2, which are fixed by the positioning holes and the positioning screws at both ends of the heating plate 3. The stainless steel sheet 2 has a sample preparation hole in the middle, and the width, length and thickness of the sample preparation hole are consistent with the size of the sample to be prepared. The stainless steel sheet 2 has multiple sheets, and the sample preparation holes of the multiple stainless steel sheets 2 have multiple sizes and specifications. Samples of different specifications can be prepared by replacing the stainless steel sheet 2. The pressing plate 1 is placed above the stainless steel sheet 2, and positioning holes are provided at both ends of the pressing plate 1. The positioning screws at both ends of the heating plate 3 are passed through, and the stainless steel sheet is further fixed by locking the nut; the pressing plate 1 also has a clearance hole, and the width and length of the clearance hole are greater than the width and length of the sample preparation hole of the stainless steel sheet 2. The width of the scraper 5 is larger than the width of the sample preparation hole of the stainless steel sheet 2 and smaller than the width of the clearance hole of the pressing plate 1.

[0017] The sample preparation method includes the following steps:

[0018] 1. Place the heating plate 3 on the table and adjust the four corner screws to level it;

[0019] 2. Place the stainless steel sheet 2 of the required specifications on the heating plate, and let the positioning holes at both ends of the stainless steel sheet pass through the positioning screws of the heating plate;

[0020] 3. Place the pressing plate 1 on the stainless steel sheet, pass the positioning screws of the heating plate through the positioning holes at both ends, and tighten the nuts to fix;

[0021] 4. Start the temperature control device 4 to heat the heating plate and raise the temperature to the melting temperature of the hot melt adhesive;

[0022] 5. Put the hot melt adhesive in the oven to melt, and drop an appropriate amount of the melted hot melt adhesive into the groove. After the entire groove is filled, use the scraper 4 to scrape it evenly;

[0023] 6. Turn off the temperature control device 4 and take out the sample after it cools down.

[0024] In the embodiment of the utility model, the heating plate and the temperature control device can heat the hot melt adhesive to prevent the hot melt adhesive from solidifying too quickly during the sample preparation process, ensure the fluidity of the hot melt adhesive, and allow it to completely fill the entire mold through its own flow, ensuring that the sample thickness is uniform and free of bubbles.

[0025] In the embodiment of the utility model, the stainless steel sheet has various sizes and specifications, and samples of different specifications can be prepared by replacing the stainless steel sheet; the size of the groove of the stainless steel sheet is consistent with the size of the prepared sample, and the size of the sample can be accurately controlled.

[0026] In the embodiment of the utility model, the hot melt adhesive is scraped flat in an open environment using a scraper, which can effectively remove the air in the groove and further ensure that the sample thickness is uniform and free of bubbles.

[0027] In the embodiment of the utility model, the heating plate, the stainless steel sheet, the wall of the groove of the pressure plate and the outer surface of the scraper are all sprayed with tetrafluoroethylene paint, which can prevent the hot melt adhesive from adhering to their surfaces and facilitate the demoulding of the sample.

[0028] In summary, the utility model provides a hot melt adhesive low-temperature resistant flexible sample preparation tool for battery fixation, which is suitable for the production of hot melt adhesive low-temperature flexible samples, and changes the previous sample preparation method with uneven sample thickness and bubbles. The hot melt adhesive temperature is controlled by a heating plate during the sample preparation process to ensure the fluidity of the hot melt adhesive, so that it can completely fill the entire mold through its own flow, ensuring the uniform thickness of the sample and the absence of bubbles; the sample is formed in one go by designing a groove of a specified size, and the stainless steel sheet has a variety of sizes and specifications, and samples of different specifications can be prepared by replacing the stainless steel sheet; the hot melt adhesive is scraped flat by a scraper in an open environment, which can fully remove the air in the groove, further ensuring that the sample thickness is uniform and there are no bubbles, thereby ensuring the accuracy of the hot melt adhesive low-temperature flexibility test.

Claims

1. A hot melt adhesive low temperature resistant flexible sample preparation tool for battery fixing, characterized by: It comprises a heating plate (3) located at the bottom, a stainless steel sheet (2) placed on the upper surface of the heating plate (3), and a clamping assembly for clamping the stainless steel sheet (2), wherein four corner screws for adjusting the horizontality of the heating plate are installed at the four corners of the heating plate (3); the clamping assembly comprises a pressing plate (1), a positioning screw, and a nut installed on the positioning screw; lower positioning holes / grooves are provided at both ends of the pressing plate (1), upper positioning holes / grooves corresponding to the lower positioning holes are provided at both ends of the stainless steel sheet (2), and the upper positioning holes / grooves are connected with the lower positioning holes / grooves to form a complete positioning hole / groove; a sample preparation hole is provided in the middle of the stainless steel sheet (2), and the width, length and thickness of the sample preparation hole are consistent with the size of the sample to be prepared; a clearance hole is provided in the middle of the pressing plate (1) for making way for the sample preparation hole, and the width of the clearance hole is greater than the width of the groove of the stainless steel sheet, and the length of the clearance hole is greater than the length of the groove of the stainless steel sheet; During assembly, the positioning screw passes through the positioning hole / slot and is locked and fixed to the stainless steel sheet (2) by means of a nut. The bottom surface of the sample preparation hole is sealed by the upper surface of the heating plate (3) to form a sample preparation slot.

2. The low temperature resistant flexible sample preparation tool for hot melt adhesive for battery fixing according to claim 1, characterized in that: One side of the heating plate (3) is connected to a temperature control device (4).

3. The low temperature resistant flexible sample preparation tool for hot melt adhesive for battery fixing according to claim 1, characterized in that: The stainless steel sheets (2) are multiple sheets, and the sample preparation holes of each stainless steel sheet (2) have different sizes and specifications. Samples of different specifications can be prepared by replacing the stainless steel sheets.

4. The low temperature resistant flexible sample preparation tool for hot melt adhesive for battery fixing according to claim 1, characterized in that: It also includes a scraper (5) for scraping the hot melt adhesive in the sample preparation groove, wherein the width of the scraper (5) is greater than the width of the groove and less than the width of the clearance groove.

5. The low temperature resistant flexible sample preparation tool for hot melt adhesive for battery fixing according to claim 4, characterized in that: The heating plate (3), the middle part of the stainless steel sheet (2), the wall of the hole and the outer surface of the scraper are all sprayed with tetrafluoroethylene paint.

6. The low temperature resistant flexible sample preparation tool for hot melt adhesive for battery fixing according to claim 1, characterized in that: The stainless steel sheet (2) has at least one sample preparation hole in the middle.

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