Press temperature sensing test board

Abstract

The utility model relates to the technical field of equipment test tools, in particular to a temperature sensing test board for a press. The substrate is divided into a plurality of temperature sensing areas, and the temperature sensing lines are arranged among the temperature sensing areas, so that the measurement coverage of the steel plate surface of the measurement pressing plate is wider, the blind area is smaller, the measurement accuracy is higher, the temperature sensing lines are embedded into the substrate groove, and the through groove consistent with the substrate is formed in the glass fiber cloth close to the substrate groove, so that the measurement accuracy is improved. The contact distance between the temperature sensing line and the hot-pressing steel plate is shorter, the release film is arranged on the outermost layer, the phenomenon that the release film is torn off after the hot-pressing plate steel plate and the glass fiber cloth are bonded and pressed is avoided, the contact distance between the temperature sensing line and the hot plate is short during testing, and testing errors caused by heat absorption and diffusion of a copper-plated alloy surface used on the outer layer are avoided. Therefore, the error of the temperature sensing line can be reduced. In conclusion, through the technical means, the jig for testing the uniform temperature of the pressing plate is more accurate in temperature measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment testing fixtures, in particular to a press temperature sensing test board. Background Art

[0002] A hot press is a device used to shape and connect materials under high temperature and high pressure. It places the material between two heated press plates and applies a certain pressure and temperature to soften or melt the material after heating, thereby achieving bonding or shaping between the materials. Hot presses are widely used in plastic processing, electronic component packaging, composite material manufacturing and other fields.

[0003] During the use of the press, especially when pressing PCB boards, in order to ensure the uniformity of the thickness of the PCB products and complete curing, the press must be tested regularly to confirm the temperature uniformity of the hot pressing of the press plate steel plate, and the test points are evenly distributed in the designated areas of the hot plate. Under constant temperature settings, the temperature difference of each test point should be between ±2°C to be considered qualified. In the prior art, there are also many jigs for testing the uniformity of the pressing temperature, but most of them are temporary jigs made of kraft paper. Because this type of jig is soft paper, it can only be used once, which is very inconvenient, and the temperature sensing line is easy to fall off on the kraft paper, resulting in inaccurate testing.

[0004] In the prior art CN206960020U, a temperature uniformity jig for a hot press is disclosed, in which 5 temperature sensing wires are pressed into the interior of the H / H substrate through the inner layer circuit method, and the 5 temperature sensing wires are arranged on the jig in a fan-shaped form, and a protective layer of 7628RC43%PP is also provided on both sides of the H / H substrate, and a copper-plated alloy surface is also provided on the outside of the protective layer. This technology makes the test jig change from soft to hard, and it can be reused, and a layer of copper-plated alloy surface is also provided on the outside to improve the thermal conductivity. However, this technology only uses 5 fan-shaped temperature-sensitive wires, and there is still a large test blind area for the entire hot pressing plate. In addition, the temperature-sensitive wire is pressed into the inside of the H / H substrate. Although this method can prevent the entire temperature-sensitive wire from falling off, it does cause a gap between the temperature-sensitive wire and the protective layer of the outer heat-conducting 7628RC43% PP. This also causes the temperature-sensitive wire to be far away from the pressing plate during pressing, resulting in inaccurate temperature measurement. In addition, the H / H substrate needs to be browned on both sides during pressing, and directly using the H / H substrate to contact the 7628RC43% PP will result in uneven contact, and stratification will occur during long-term use. Although the copper-plated alloy is used on the outer surface, it can prevent the 7628RC43% PP from sticking to the hot pressing steel plate after pressing, but the copper-plated alloy itself also has a certain absorption of heat, which will lead to inaccurate testing. Utility Model Content

[0005] Therefore, the utility model proposes a temperature-sensitive test board for a press machine, which divides the entire substrate into multiple temperature-sensitive zones and sets temperature-sensitive wires between the temperature-sensitive zones, so that the entire temperature is uniform and the test data is more accurate. At the same time, the substrate uses a copper-clad laminate for copper etching on both sides, so that the copper-clad laminate as a whole does not need to be over-browned and is more closely attached to the glass fibers on both sides and is not easy to delaminate after long-term use; and slots are set on the substrate so that the temperature-sensitive wire can directly contact the glass fiber cloth, reducing the contact distance and making the temperature measurement data more accurate. Replacing the copper-plated alloy with a release film on the outermost layer can prevent the board from sticking. At the same time, the release film can be torn off after the lamination is completed, and the heat from the heating plate can directly reach the temperature-sensitive wire through the two protective layers PP, so that the test accuracy can be improved.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A press temperature-sensing test plate, comprising in sequence: a first release film, a first protective layer, a substrate, a second protective layer, and a second release film;

[0008] A plurality of first wire grooves are arranged on the substrate, a plurality of temperature sensing wires are arranged in the first wire grooves, and the temperature sensing wires are used to test the temperature of the hot press plate.

[0009] In some embodiments, the substrate is a copper-clad substrate, and the copper of the outer layer is etched so that the insulating and thermally conductive layer inside the copper-clad board is exposed to the outside and directly contacts the protective layer during lamination. Protective layers are provided on both sides of the substrate, and the material of the protective layer is glass fiber cloth. The use of the protective layer can make the fixture have good electrical insulation, and the glass fiber cloth has good adhesion to the etched substrate. The glass fiber cloth also has the characteristics of high flame retardancy, good reliability, and good processability. The outer layer uses a release film, which can prevent the board from sticking. After lamination, tearing off the release film can make the two protective layers PP directly contact the temperature sensing line during testing, thereby improving the test accuracy.

[0010] In some embodiments, the substrate is divided into a plurality of temperature sensing zones, and the plurality of temperature sensing zones are distributed in an array. The substrate is rectangular, and the substrate is divided into a plurality of rectangular temperature sensing zones of the same size and adjacent to each other. By dividing the entire substrate into a plurality of temperature sensing zones distributed in a matrix, and measuring the temperature of each temperature sensing zone, this form can measure the temperature more accurately, and this test method has a smaller blind area.

[0011] In some embodiments, one end of the first wire groove is arranged in any temperature sensing zone, or between the first temperature sensing zones, the other end of the first wire groove extends to a side surface of the substrate, the first wire groove is arranged between the temperature sensing zones adjacent to each other in the longitudinal direction, and one end of the first wire groove is connected to the substrate; the first wire grooves are arranged adjacent to each other; the first wire grooves are arranged between the temperature sensing lines in the transverse direction of the temperature sensing zone to facilitate the setting of the temperature sensing lines on the substrate; when the temperature sensing lines are arranged in the temperature sensing zone, the height of the first wire groove is less than the longitudinal height of the substrate, or, if there are n temperature sensing zones in the longitudinal direction, the length of the first wire groove is (n-1) times the longitudinal length of the temperature sensing zone.

[0012] In some embodiments, it is characterized in that a plurality of the temperature sensing zones located in the same longitudinal direction share a first wire groove, and the first wire groove can be arranged within the temperature sensing zone, or the first wire groove can be arranged between adjacent temperature sensing zones.

[0013] In some embodiments, the temperature sensing wire is provided with a first end and a second end, the temperature sensing wire extends along the first wire groove, and the first end of the temperature sensing wire is arranged in the temperature sensing area; the second end is arranged outside the substrate and connected to the testing machine; the temperature sensing wire is provided with a first end and a second end, the second end is arranged outside the substrate, the first end extends from the side where the substrate is connected to the first wire groove, along the inside of the first wire groove toward the inside of the substrate, and there is at least one first end of the temperature sensing wire between the longitudinally adjacent temperature sensing areas; multiple temperature sensing wires are arranged in the first wire groove, multiple temperature sensing wires have second ends arranged outside the substrate, and multiple temperature sensing wires extend in the first wire groove, and when extending to one side between the longitudinally adjacent temperature sensing areas, at least one temperature sensing wire bends 90° and extends The remaining temperature-sensing wires continue to extend in the first wire slot, and are extended from another temperature-sensing wire into the next temperature-sensing wire between the next temperature-sensing zones, and this process is repeated until the last temperature-sensing wire at the tail of the first wire slot is extended into the next temperature-sensing wire between the temperature-sensing zones, and finally ensures that there is at least one temperature-sensing wire between each temperature-sensing zone, and the second end extends out of the plate for testing the temperature; wherein the first end is used as the hot end of the temperature-sensing wire and is arranged in the pressing plate of the hot press, and the second end is used as the cold end of the temperature-sensing wire and is arranged outside the base plate. During the test, the temperature difference between the hot end and the cold end is converted into a readable temperature value through calculation, so as to measure the temperature and draw a temperature curve.

[0014] Optionally, multiple temperature sensing wires are arranged in the first wire groove, and multiple temperature sensing wires are arranged outside the substrate at the second ends. Multiple temperature sensing wires extend in the first wire groove. When extending to one side of the temperature sensing zone, at least one temperature sensing wire bends 90° and extends into the temperature sensing zone. The remaining temperature sensing wires continue to extend in the first wire groove, and in the next temperature sensing zone, another temperature sensing wire extends into the next temperature sensing zone, and so on, until the last temperature sensing wire at the tail of the first wire groove extends into the temperature sensing zone, and finally ensures that there is at least one temperature sensing wire between each longitudinally adjacent temperature sensing zone, and the second end extends out of the plate for testing the temperature.

[0015] In some embodiments, the temperature sensing wire is also fixed in the temperature sensing area by a first high-temperature tape layer, and a first high-temperature tape layer is also provided on multiple temperature sensing wires; the first high-temperature tape layer covers the surface of the temperature sensing wire, and the temperature sensing wire is fixed to the substrate by the first high-temperature tape layer.

[0016] In some embodiments, the second ends of multiple temperature sensing wires are led out from the first side of the substrate, and the multiple second ends are fixed by a second high-temperature tape layer. The second ends are led out from the first side, leave the substrate and thus leave the hot pressing surface of the press, and serve as the cold end of the temperature sensing wire, forming a temperature difference with the first end in the hot press during testing; and the use of the second high-temperature tape can prevent the temperature sensing wire from bending during hot pressing, causing damage to the temperature sensing wire and thus inaccurate testing.

[0017] In some embodiments, the second end further includes a terminal head, which can also be connected to a temperature sensing wire head, and connected to a test device through the temperature sensing wire head. The second end is connected to a temperature sensing wire joint, and is used to connect to a special temperature conversion device through the temperature sensing wire head. The device can draw a temperature curve of the temperature difference between the cold end and the hot end in real time during the test.

[0018] In some embodiments, the first protective layer and the second protective layer both include a first PP layer and a second PP layer that are stacked; the first PP layer is adjacent to the substrate, and the second PP layer is adjacent to the first release film or the second release film; the first PP layer of the first protective layer and the second protective layer are both provided with a second wire groove, and the second wire groove is arranged to overlap with the first wire groove; the first protective layer and the second protective layer are both arranged in two layers, and are mirror-symmetrical with respect to the substrate, a second wire groove is provided in the first PP layer, and the second wire groove and the first wire groove are of the same size, so that the temperature sensing line will not directly contact the first protective layer and the second protective layer.

[0019] In some embodiments, the first PP layer and the second PP layer are both electronic glass fiber cloth layers; wherein the first PP layer is 7628RC45% PP, and the second PP layer is 1080RC65% PP. The two layers contain different amounts of polypropylene, and the higher the percentage, the higher the thermal conductivity, heat resistance, etc., and the higher the relative cost. Since the first PP layer is not in direct contact with the heat conducting plate, the 7628RC45% PP with relatively low heat resistance and low cost can be used. Since the second PP layer is closer to the hot plate during testing, the 1080RC65% PP with a higher polypropylene content is used, which improves the heat resistance while preventing the test plate from being damaged.

[0020] The utility model provides a temperature sensing test plate for a press machine, which has the following effects:

[0021] By dividing the substrate into multiple temperature-sensing zones and setting temperature-sensing wires between the temperature-sensing zones, the measurement coverage of the pressure plate steel plate surface is wider and the blind area is smaller, which further makes the measurement accuracy higher. By burying the temperature-sensing wire in the substrate groove and opening a through groove consistent with the substrate on the glass fiber cloth that is close to it, the contact distance between the temperature-sensing wire and the hot-pressed steel plate is shorter, and a release film is provided on the outermost layer to prevent the hot-pressed steel plate from bonding with the glass fiber cloth when making the template. The release film can be torn off after the pressing is completed, so the error of the temperature-sensing wire can be reduced. In summary, through the above technical means, the temperature measurement of the fixture for testing the uniform temperature of the pressure plate is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The explosion of the utility model Figure 1 ;

[0023] Figure 2 The explosion of the utility model Figure 2 ;

[0024] Figure 3 It is a side view of the temperature sensing plate of the utility model;

[0025] Figure 4 It is the temperature sensing area distribution diagram of the utility model;

[0026] Figure 5 This is a schematic diagram of the first wire slot of the utility model;

[0027] Figure 6 It is a schematic diagram of a substrate of the utility model;

[0028] Reference numerals:

[0029] 100, substrate; 110, first wire slot; 120, temperature sensing wire; 121, first end; 122, second end; 123, temperature sensing joint; 130, first high temperature tape layer; 140, second high temperature tape layer; 150, temperature sensing area; 160, first side surface;

[0030] 200, first protective layer; 210, second wire trough;

[0031] 300, second protective layer;

[0032] 400, a first release film;

[0033] 500, a second release film; DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the specific technical solution of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0036] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0037] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0038] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] In the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0040] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the related in a specific way.

[0041] Embodiment 1:

[0042] A press temperature sensing test board, comprising: a first release film 400, a first protective layer 200, a substrate 100, a second protective layer 300, and a second release film 500;

[0043] A plurality of first wire grooves 110 are disposed on the substrate 100 . A plurality of temperature sensing wires 120 are disposed in the first wire grooves 110 . The temperature sensing wires 120 are used to test the temperature of the hot press plate.

[0044] In other embodiments, Figures 1 to 6 As shown, the production and use process of the test temperature sensing board is as follows:

[0045] S1. The substrate 100 uses a copper-clad laminate, and the copper on both sides is etched away. The thickness of the copper-clad laminate needs to be selected according to the thickness of the pressed board;

[0046] S2. After etching away the copper foil on both sides of the copper-clad laminate substrate 100, grooves are cut according to the dimensions of the attached drawing;

[0047] S3. Cut the J-type temperature sensing wire 120 into 2.5m / pieces and fix them in the slots with high temperature tape;

[0048] S4. Place one 1080RC65%PP and one 7628RC45%PP on each side of the etched substrate 100. The size of the 1080RC65%PP is required to be consistent with that of the substrate 100. The 7628RC45%PP is required to be grooved at the same position as the substrate 100.

[0049] S5: prepare some first release films 400 and second release films 500 to prevent the copper foil from covering the temperature-sensitive board when the temperature-sensitive board is pressed.

[0050] S6 When the jig is used to perform a temperature test on the hot pressing plate, the first release film 400 and the second release film 500 need to be torn off, and then placed on the hot pressing plate for testing and reading temperature data.

[0051] The main principle of the press temperature sensing test board is to set the first end 121 (hot end) of the J-type temperature sensing wire 120 in an environment of the temperature to be measured through the temperature sensing wire 120, and connect the second end 122 (cold end) to the measuring instrument. When there is a temperature difference between the hot end and the cold end, the temperature sensing wire 120 will generate a thermoelectric potential. This thermoelectric potential is due to the different electron densities of two different metals at different temperatures, which causes electron movement and forms an electric current in the temperature sensing wire 120. The size of the thermoelectric potential is related to the properties of the two metals, the temperature difference, and the temperature of the hot end and the cold end. The temperature sensing wire head 123 is connected to the second end 122, and the thermoelectric potential is measured by the measuring instrument to obtain the temperature to be measured. Measuring instruments usually convert thermoelectric potential into digital display, and the average temperature value is obtained by reading the data. By dividing the press temperature sensing test board into multiple temperature sensing zones 150 and measuring the temperature of multiple temperature sensing zones 150, it can be understood whether the pressing is uniform. Before use, by tearing off the first release film 400 and the second release film 500 on both sides, the two protective layers PP can be directly in contact with the temperature sensing line during the test, thereby improving the test accuracy.

[0052] Embodiment 2:

[0053] Based on Example 1, please refer to Figure 1-2 , this embodiment further optimizes and explains the temperature sensing plate.

[0054] In other embodiments, the substrate 100 is rectangular, and the size of the substrate 100 is 1295*780mm, and the thickness of the pressing plate is 1.0mm, that is, the temperature sensing plate needs to use a 0.8mm base material, and the substrate 100 is divided into a plurality of rectangular temperature sensing areas 150 of the same size and adjacent to each other. The temperature sensing area 150 is formed by dividing the side length into 4 equal parts to form 16 temperature sensing areas 150 with a surface size of 195*324 and a surface size of 195*323. By dividing the entire substrate 100 into a plurality of temperature sensing areas 150, and performing a temperature control on each temperature sensing area 150, Temperature measurement, this form can measure the temperature more accurately, and this test method has a smaller blind area. The substrate 100 uses a copper clad laminate, which has a copper foil on the surface and an insulating thermal conductive layer inside. Removing the external copper foil can prevent the metal from absorbing heat and enable the thermal insulating layer to directly abut the glass fiber cloth during pressing, thereby increasing the thermal conductivity effect. The thermal insulating layer and the glass fiber cloth have a better connection effect, and do not require over-browning, thereby reducing the operation time. The thermal insulating layer and the glass fiber cloth are also more closely connected, making it more convenient to conduct heat.

[0055] Embodiment 3:

[0056] Based on Embodiment 1 and Embodiment 2, this embodiment further optimizes and explains the grooves and wiring on the temperature sensing board.

[0057] In other embodiments, please refer to Figure 5As shown, the first wire groove 110 is arranged between the temperature sensing zones 150 adjacent to each other in the transverse direction, and one end of the first wire groove 110 is connected to the first side surface 160 of the substrate 100; the first wire groove 110 is arranged adjacent to each other; the first wire groove 110 is arranged between the temperature sensing wires 120 in the transverse direction of the temperature sensing zones 150, so that the temperature sensing wires 120 are conveniently arranged on the substrate 100. There are 4 temperature sensing zones 150 in the longitudinal direction, and the length of the first wire groove 110 is the transverse length of 3 temperature sensing zones 150. When the longitudinal length of the substrate 100 is 1295 mm, The first wire groove 110 is about 971mm, and one side of the first wire groove 110 is on the lateral side of the substrate 100. The first wire groove 110 is arranged starting from the lateral side of the substrate 100, and a first wire groove 110 is provided every 195mm until three first wire grooves 110 are provided, and 195mm is used as the groove center, extending about 2mm to both sides, so that the first groove is 4mm wide, and is grooved toward the inside of the substrate 100 in a direction parallel to the longitudinal side, and is grooved to 971mm.

[0058] In some other embodiments, laterally adjacent first wire slots 110 are disposed between the temperature sensing regions 150 and extend on the substrate 100 .

[0059] In other embodiments, please refer to Figure 6 As shown, the temperature sensing line 120 is provided with a first end 121 and a second end 122, the second end 122 is provided outside the substrate 100, the first end 121 is from the side where the substrate 100 is connected to the first wire groove 110, extends along the inside of the first wire groove 110, and is between the longitudinally adjacent temperature sensing zones 150; the temperature sensing line 120 selects a J-type temperature sensing line 120, according to the selected substrate 100 and the divided temperature sensing zones 150, because there are three adjacent places between the longitudinal temperature sensing zones 150, each Three temperature-sensitive wires 120 are selected for each first wire slot 110, and because a first end 121 of a temperature-sensitive wire 120 is set at each longitudinally adjacent position, that is, a first end 121 of a temperature-sensitive wire 120 is set at 324mm, 648mm, and 971mm, so the length of each temperature-sensitive wire 120 is different, and when the first end 121 is extended to the longitudinally adjacent position of the temperature-sensitive zone 150 and fixed, the part of the first end 121 in the temperature-sensitive zone 150 pushes the wire head away by 5 to 8mm. Among them, the first end 121 is set in the pressing plate of the hot press as the hot end of the temperature-sensitive wire, and the second end 122 is set outside the substrate as the cold end of the temperature-sensitive wire 120. During the test, the temperature difference between the hot end and the cold end is converted into a readable temperature value through calculation, so as to measure the temperature and draw a temperature curve.

[0060] In other embodiments, please refer to Figure 6As shown, a first high-temperature tape layer 130 is also provided on the nine temperature-sensing wires 120 in the three first wire grooves 110; the first high-temperature tape layer 130 is mainly used to fix the temperature-sensing wires 120 buried in the first wire grooves 110 on the substrate 100, and is mainly fixed to the first end 121 and the body of the temperature-sensing wire 120. The first high-temperature tape layer 130 can partially fix the temperature-sensing wire 120, or fix it along the entire wire body.

[0061] In other embodiments, the first ends 121 of the temperature sensing wires 120 in the same first wire slot 110 are all arranged on the same side of the first wire slot 110; the first ends 121 of the three temperature sensing wires 120 are bent 90° between the longitudinally adjacent temperature sensing areas 150 and on one side of the first wire slot 110, and the three first ends 121 are all on the same side of the first wire slot 110, so that each of the three temperature sensing wires 120 is in a "7" shape in the first wire slot 110.

[0062] In other embodiments, a total of 9 temperature-sensitive wires 120 from the 3 first wire slots 110 are led out from the first side 160, and the second end 122 is also provided with a second high-temperature tape layer 140, and the 9 second high-temperature tape layers 140 of each temperature-sensitive wire 120 outside the substrate 100 are all tied to one point; the 9 second tape layers are all connected together to prevent the temperature-sensitive wire 120 from being damaged during the pressing of the plate, resulting in a test error, and the temperature is measured through the temperature-sensitive connector 123 connected to the second end 122. The second end 122 also includes a terminal, which is connected to the temperature-sensitive wire head 123 for testing the temperature and drawing a temperature curve.

[0063] Embodiment 4:

[0064] Based on Example 1, please refer to Figure 1 to Figure 3 As shown, this embodiment further optimizes and explains each layer other than the substrate 100.

[0065] In other embodiments, the first protective layer 200 is made of electronic glass fiber cloth, which includes two layers. The layer close to the substrate 100 is 7628RC45%PP. When the substrate 100 is 1295*780mm, the 7628RC45%PP is also 1295*780mm, so that it can completely overlap with the substrate 100 during pressing; and at the position of the first wire groove 110 where the 7628RC45%PP overlaps with the substrate 100, a second wire groove 210 of the same size and shape is also dug, and the other layer is 1080RC65%PP. When the substrate 100 is selected as 1295*780mm, 1080RC65%PP is also selected as 1295*780mm; the first protective layer 200 is arranged on one side of the substrate 100, which is all glass fiber cloth, so that the fixture has the characteristics of high flame retardancy, good reliability, good processability, etc., and is 7628RC45%PP, and a second wire groove 210 is arranged on this layer. The second wire groove 210 is consistent in size with the first wire groove 110 and can completely correspond to it when pressed. The wire groove can reduce the contact distance between the temperature sensing wire 120 bonded to the substrate 100 and the hot pressing steel plate of the test hot press.

[0066] In other embodiments, the second protective layer 300 is made of electronic glass fiber cloth, which includes two layers, one layer close to the substrate 100 is 7628RC45%PP, and when the substrate 100 is 1295*780mm, the 7628RC45%PP is also 1295*780mm, so that it can completely overlap with the substrate 100 during pressing; and at the position of the first wire groove 110 where the 7628RC45%PP overlaps with the substrate 100, a third wire groove 310 of the same size and shape is also dug, and the other layer is 1080RC65%PP, at When the substrate 100 is selected as 1295*780mm, 1080RC65%PP is also selected as 1295*780mm; the second protective layer 300 is arranged on one side of the substrate 100, which is all glass fiber cloth, so that the fixture has the characteristics of high flame retardancy, good reliability, good processability, etc., and is 7628RC45%PP, and a third wire groove 310 is arranged on this layer. The third wire groove 310 is consistent in size with the first wire groove 110 and can completely correspond to it when pressed. The wire groove can reduce the contact distance between the temperature sensing wire 120 bonded to the substrate 100 and the hot pressing steel plate of the test hot press.

[0067] In some other preferred embodiments, the first PP layer and the second PP layer are both electronic glass fiber cloth layers; wherein, the first PP layer is 7628RC45% PP, and the second PP layer is 1080RC65% PP. The two layers contain different amounts of polypropylene, and a higher percentage means that the thermal conductivity and heat resistance will be improved, and the relative cost is higher. Since the first PP layer is not in direct contact with the heat conducting plate, the 7628RC45% PP with relatively low heat resistance and low cost can be used. Since the second PP layer is closer to the hot plate during the test, the 1080RC65% PP with a higher polypropylene content is used, which can improve the heat resistance and prevent the test plate from being damaged.

[0068] In some other optional embodiments, both PP layers use 1080RC65% PP, and a second groove that is the same size as the first groove and can overlap is opened in the PP layer close to the substrate. Although this method can also achieve the same function, the cost of the entire fixture is higher than that of the mixed protective layer of 7628RC45% PP and 1080RC65% PP.

[0069] The serial numbers of utility model embodiments are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent device or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A press temperature sensing test plate, characterized in that: Including in order: A first release film (400), a first protective layer (200), a substrate (100), a second protective layer (300), and a second release film (500); A plurality of first wire grooves (110) are arranged on the substrate (100), a plurality of temperature sensing wires (120) are arranged in the first wire grooves (110), and the temperature sensing wires (120) are used to test the temperature of a hot press plate.

2. A press temperature sensing test plate according to claim 1, characterized in that: The substrate (100) is divided into a plurality of temperature sensing areas (150), and the plurality of temperature sensing areas (150) are distributed in an array.

3. A press temperature sensing test plate according to claim 2, characterized in that: One end of the first wire groove (110) is arranged in any temperature sensing zone, and the other end of the first wire groove (110) extends to the first side surface (160) of the substrate.

4. A press temperature sensing test plate according to claim 3, characterized in that: A plurality of the temperature sensing areas (150) located in the same longitudinal direction share one first wire slot (110).

5. A press temperature sensing test board according to claim 3, characterized in that: The temperature sensing wire (120) is provided with a first end (121) and a second end (122); the temperature sensing wire (120) extends along the first wire slot, and the first end (121) of the temperature sensing wire is arranged in a temperature sensing area; the second end (122) is arranged outside the substrate (100) and connected to a testing machine.

6. A press temperature sensing test board according to claim 2, characterized in that: The temperature sensing wire (120) is also fixed in the temperature sensing area by a first high temperature adhesive tape layer (130).

7. A press temperature sensing test board according to claim 5, characterized in that: The second end portions (122) of the plurality of temperature sensing wires (120) are led out from the first side surface (160) of the substrate, and the plurality of second end portions (122) are fixedly arranged by a second high-temperature adhesive tape layer (140).

8. A press temperature sensing test board according to claim 5, characterized in that: The second end (122) is connected to the testing equipment via a temperature sensing lead (123).

9. A press temperature sensing test plate according to claim 1, characterized in that: The first protective layer and the second protective layer both comprise a first PP layer and a second PP layer which are stacked; the first PP layer is arranged adjacent to the substrate, and the second PP layer is arranged adjacent to the first release film or the second release film; the first PP layer of the first protective layer and the first PP layer of the second protective layer are both provided with a second wire groove (210), and the second wire groove (210) is arranged to overlap with the first wire groove (110).

10. A press temperature sensing test board according to claim 9, characterized in that: The first PP layer and the second PP layer are both electronic glass fiber cloth layers; wherein the first PP layer is 7628RC45% PP, and the second PP layer is 1080RC65% PP.

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