Hot press board core temperature detection machine

By integrating multi-point, three-dimensional adjustable temperature detection components and thermocouple extrusion components, the problem of accurate internal temperature detection of hot-pressed sheet cores is solved, enabling efficient and automated temperature data acquisition and process parameter adjustment, significantly improving production quality and efficiency.

CN122149666APending Publication Date: 2026-06-05NORTHEAST FORESTRY UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEAST FORESTRY UNIV
Filing Date
2026-02-25
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Traditional temperature detection methods cannot accurately measure the internal temperature of the core board of hot-pressed sheet, resulting in a high scrap rate and the inability to adjust process parameters in real time. Manually embedded sensors are not suitable for continuous production.

Method used

Design a temperature detection machine for core board of hot-pressed sheet material. It adopts a multi-point, three-dimensional adjustable temperature detection component and combines it with a thermocouple extrusion component to realize the automatic insertion and cutting of thermocouples. It integrates thermocouple storage, guiding, clamping, pushing and insertion functions, and works with a PLC system to collect real-time temperature data and adjust process parameters.

Benefits of technology

It improves the accuracy and spatial adaptability of internal temperature detection in the core board, reduces the failure rate, enhances the level of automation and production efficiency, optimizes the real-time adjustment capability of process parameters, and reduces labor costs and material consumption.

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Abstract

The application provides a hot-pressing plate core plate temperature detection machine, belonging to the technical field of temperature detection. The detection machine has strong operation continuity, can accurately collect temperature data, and improves the production efficiency and production quality of the core plate. The detection machine comprises a detection machine rack, a cutter assembly and a temperature detection assembly. Multiple temperature detection assemblies are arranged on the detection machine rack, and the cutter assembly is arranged on the detection machine rack. The cutter assembly is provided with cutters in the same number as the temperature detection assemblies. The multiple temperature detection assemblies are dispersedly arranged along the Y direction on the detection machine rack, and each temperature detection assembly can move along the X direction and the Z direction. The detection machine can non-damage temperature measurement of the core plate, and can realize real-time temperature measurement, effectively improving the production quality of the core plate and reducing the core plate damage rate. The detection machine has high automation degree, reduces human intervention, has low labor cost and high production efficiency. The detection machine can be adaptively designed according to the hot-pressing machine model and the core plate specification, and has high matching and strong adaptability.
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Description

Technical Field

[0001] This invention belongs to the field of temperature detection technology, and in particular relates to a temperature detection machine for the core board of a hot-pressed sheet. Background Technology

[0002] In the production of hot-pressed sheets, the hot-pressing process is one of the key steps. The uniformity and accuracy of the core board temperature directly affect the physical properties of the sheet and the quality of the product.

[0003] Traditional temperature detection methods mainly rely on surface contact temperature measurement or infrared non-contact temperature measurement. While both methods are non-destructive, they cannot measure the true internal temperature of the core board. If drilling or other destructive methods are used to sample and measure the core board temperature, although accurate temperatures can be obtained, real-time adjustment of process parameters is impossible, leading to a high scrap rate. Manually embedding wireless temperature sensors within the slab for temperature measurement is unsuitable for continuous production. Summary of the Invention

[0004] To address the problems existing in the background art, the present invention provides a core board temperature detection machine for hot-pressed sheets. This detection machine has strong continuous operation and can accurately collect temperature data, thereby improving the production efficiency and quality of the core board.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a hot-pressed sheet core board temperature detection machine, including a detection machine frame, a cutting assembly and a temperature detection assembly, wherein multiple temperature detection assemblies are all mounted on the detection machine frame, the cutting assembly is mounted on the detection machine frame, the cutting assembly is provided with a number of cutting blades equal to the number of temperature detection assemblies, the multiple temperature detection assemblies are distributed along the Y direction on the detection machine frame, and each temperature detection assembly can move along the X and Z directions.

[0006] The cutting assembly includes a cutting tool fixing plate, a cutting tool holder, a cutting tool, and a cross connecting plate. The cross connecting plate is fixedly connected to the frame of the testing machine. A cylinder is fixedly installed on the cross connecting plate. The cutting tool holder is fixedly connected to the telescopic end of the cylinder and is lifted and lowered on the cross connecting plate. Multiple cutting tool holders are respectively aligned with multiple temperature detection components on the cutting tool holder. Each cutting tool holder is detachably fixed and press-fitted with a cutting tool through the cutting tool fixing plate. The blade of each cutting tool faces upward.

[0007] The cross connecting plate has a through guide hole, and a guide post is fixedly installed on the tool holder. The guide post is aligned with the guide hole and movably inserted in the guide hole. The length of the guide post is greater than the displacement stroke of the tool holder.

[0008] Each of the temperature detection components includes a fan, an X-axis support frame, a Z-axis moving frame, a Z-axis fixed frame, and a thermocouple extrusion assembly. The Z-axis fixed frame is fixedly mounted on the frame of the testing machine. The Z-axis moving frame is slidably mounted on the Z-axis fixed frame along the Z-direction via a transmission assembly one. The X-axis support frame is fixedly mounted on the Z-axis moving frame. The thermocouple extrusion assembly is slidably mounted on the X-axis support frame along the X-direction via a transmission assembly two. The fan is fixedly mounted on the thermocouple extrusion assembly.

[0009] The thermocouple extrusion assembly includes a wire feeding needle, a thermocouple storage chamber, an L-shaped frame, and a feeding motor. The L-shaped frame is fixedly connected to the moving part of the transmission assembly two. The thermocouple storage chamber for storing thermocouples is fixedly installed on the L-shaped frame. The wire feeding needle is fixedly installed on the L-shaped frame and is in the shape of a hollow tube. The thermocouples pass through the outlet of the thermocouple storage chamber and are installed in the wire feeding needle. The feeding motor is fixedly installed on the L-shaped frame, and a feeding wheel is installed on the output end of the feeding motor. The feeding wheel rolls and pushes the thermocouples to continuously supply them to the wire feeding needle.

[0010] The thermocouple extrusion assembly also includes a clamping block, which is disposed between the wire feeding needle and the outlet of the thermocouple storage chamber. The clamping block is hinged on the L-shaped frame. A supporting spring is clamped between the clamping block and the needle seat. A feeding channel is provided on the clamping block. The thermocouple passes through the feeding channel and is inserted into the wire feeding needle. A limiting clamping guide wheel is hinged on the clamping block. The limiting clamping guide wheel and the feeding guide wheel are symmetrically disposed on both sides of the thermocouple to fit and clamp the thermocouple.

[0011] The beneficial effects of the hot-pressed sheet core board temperature detection machine provided by this invention are as follows:

[0012] I. Improved temperature measurement accuracy and spatial adaptability for the core board:

[0013] This temperature detection machine uses a multi-point, three-dimensional adjustable arrangement of temperature detection components. By setting multiple sets of temperature detection components that can be adjusted laterally and longitudinally on the machine frame, it can take into account different positions and layers inside the core board, significantly improving the spatial resolution and adaptability of temperature detection inside the core board, ensuring continuous and accurate acquisition of temperature data, effectively improving the production quality of the core board and reducing the loss rate.

[0014] Second, it enhances automation and operational consistency in the temperature measurement process:

[0015] The thermocouple extrusion assembly is an integrated structure that integrates the functions of thermocouple storage, guidance, clamping, propulsion, and insertion. The hollow wire feeding needle improves the structural strength of the thermocouple wire during insertion, avoids bending of the thermocouple wire, and facilitates control of the insertion direction, thus improving insertion accuracy. This structure replaces the traditional manual insertion method, solving the problems of low efficiency, poor accuracy, and poor repeatability. It significantly improves the level of automation and the consistency of temperature measurement point layout, while reducing human intervention, lowering labor costs, and increasing production efficiency.

[0016] Third, the shearing method has been optimized to improve recycling efficiency:

[0017] The cutting assembly can simultaneously cut multiple thermocouples, and the residual thermocouples after cutting can be recycled in reverse. It has high cutting efficiency, reduces the cost of consumables, and facilitates the maintenance and management of the production environment.

[0018] IV. Achieving coordinated control of real-time temperature detection and processing technology:

[0019] This temperature detection machine is designed based on thermocouple temperature measurement technology. The temperature sensing end of the thermocouple is inserted into the core plate through the thermocouple extrusion assembly, directly contacting the material to obtain the internal temperature of the core plate in real time. With the help of existing multi-channel thermocouple acquisition devices or PLC, the temperature data can be displayed, recorded and analyzed. Based on the real-time temperature data, the hot press parameters can be flexibly adjusted to optimize the processing technology.

[0020] V. High equipment compatibility:

[0021] This temperature detector can be set on both sides of the core board according to actual temperature measurement needs to obtain temperature data from more points and enhance the reliability of the data. At the same time, the temperature detector can be adaptively adjusted in three dimensions according to the model of the hot press and the specifications of the template used in actual application. It has high matching and strong adaptability and supports diversified production needs. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cutting component structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the temperature detection component structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the electrocouple extrusion assembly of the present invention;

[0027] Figure 5 This is a top view of the structure of the electrocouple extrusion assembly of the present invention;

[0028] In the diagram: 1. Detector frame; 2. Cutter assembly; 3. Temperature detection assembly; 21. Cutter fixing plate; 22. Cutter holder; 23. Cutter; 24. Cross connecting plate; 31. Fan; 32. X-axis support frame; 33. Z-axis moving frame; 34. Z-axis fixed frame; 35. Coupling extrusion assembly; 351. Wire feeding needle; 352. Clamping block; 353. Thermocouple; 354. Thermocouple storage chamber; 355. L-shaped frame; 356. Feeding guide roller; 357. Limiting clamping guide roller. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0030] A temperature testing machine for core boards of hot-pressed sheet metal includes a testing machine frame 1, a cutting assembly 2, and temperature testing components 3. Multiple temperature testing components 3 are mounted on the testing machine frame 1. The cutting assembly 2 is mounted on the testing machine frame 1 and has the same number of cutting blades 23 as the temperature testing components 3. The multiple temperature testing components 3 are distributed along the Y direction on the testing machine frame 1, and each temperature testing component 3 can move along the X and Z directions. The distributed and movable multiple temperature testing components 3 allow for multi-point temperature testing of the core board.

[0031] The cutting assembly 2 includes a cutting tool fixing plate 21, a cutting tool holder 22, a cutting tool 23, and a cross connecting plate 24. The cross connecting plate 24 is fixedly connected to the frame 1 of the testing machine. A cylinder is fixedly installed on the cross connecting plate 24. The cutting tool holder 22 is fixedly connected to the telescopic end of the cylinder and is lifted and lowered on the cross connecting plate 24. Multiple cutting tool holders are respectively aligned with multiple temperature detection components 3 on the cutting tool holder 22. Each cutting tool holder is detachably fixed and press-fitted with a cutting tool 23 through the cutting tool fixing plate 21. The blade of each cutting tool 23 faces upward.

[0032] The cylinder drives the cross connecting plate 24 to rise or fall. When the cross connecting plate 24 rises, it causes multiple cutters 23 to move upward and perform cutting actions. When the cross connecting plate 24 falls, it causes multiple cutters 23 to return to their original positions.

[0033] The cross connecting plate 24 has a through guide hole, and a guide post is fixedly installed on the tool holder 22. The guide post is aligned with the guide hole and is movably inserted into the guide hole. When the cylinder drives the tool holder 22 to move in the Z direction, the guide post is always inserted in the guide hole to perform the guiding work. The length of the guide post is greater than the displacement stroke of the tool holder 22. The guide hole and the guide post are set in groups, and multiple groups can be set according to actual needs.

[0034] Each of the temperature detection components 3 includes a fan 31, an X-axis support frame 32, a Z-axis moving frame 33, a Z-axis fixed frame 34, and a thermocouple extrusion assembly 35. The Z-axis fixed frame 34 is fixedly mounted on the frame 1 of the detection machine. The Z-axis moving frame 33 is slidably mounted on the Z-axis fixed frame 34 along the Z-direction via a transmission assembly 1. The X-axis support frame 32 is fixedly mounted on the Z-axis moving frame 33. The thermocouple extrusion assembly 35 is slidably mounted on the X-axis support frame 32 along the X-direction via a transmission assembly 2. The fan 31 is fixedly mounted on the thermocouple extrusion assembly 35.

[0035] The first transmission component drives the Z-axis moving frame 33 to adjust its position along the Z direction on the Z-axis fixed frame 34. The second transmission component drives the thermocouple extrusion assembly 35 to adjust its position along the X direction on the X-axis support frame 32. The fan 31 operates to dissipate heat from the thermocouple extrusion assembly 35.

[0036] The thermocouple extrusion assembly 35 includes a wire feeding needle 351, a thermocouple storage chamber 354, an L-shaped frame 355, and a feeding motor. The L-shaped frame 355 is fixedly connected to the moving part of the transmission assembly 2. The thermocouple storage chamber 354, which stores thermocouples 353, is fixedly mounted on the L-shaped frame 355. The wire feeding needle 351 is fixedly mounted on the L-shaped frame 355 through a needle holder. The wire feeding needle 351 is a hollow tube. The thermocouples 353 pass through the outlet of the thermocouple storage chamber 354 and are installed in the wire feeding needle 351. The feeding motor is fixedly mounted on the L-shaped frame 355. A feeding wheel is installed on the output end of the feeding motor. The feeding wheel rolls and pushes the thermocouples 353 to continuously supply them to the wire feeding needle 351.

[0037] The thermocouple extrusion assembly 35 also includes a clamping block 352, which is disposed between the wire feeding needle 351 and the outlet of the thermocouple storage chamber 354. The clamping block 352 is hinged on the L-shaped frame 355. A supporting spring is clamped between the clamping block 352 and the needle seat. A feeding channel is provided on the clamping block 352. The thermocouple 353 passes through the feeding channel and is inserted into the wire feeding needle 351. A limiting clamping guide wheel 357 is hinged on the clamping block 352. The limiting clamping guide wheel 357 and the feeding guide wheel 356 are symmetrically arranged on both sides of the thermocouple 353 to fit and clamp the thermocouple 353. The feeding roller 356 is driven to rotate. The limiting clamping guide wheel 357 limits and supports the thermocouple 353 to ensure that the feeding roller can stably push the thermocouple 353 to continuously replenish the wire feeding needle 351. The feeding stops when the feeding motor stops running.

[0038] The hinge point of the clamping block 352 and the supporting spring are located on opposite sides of the clamping block 352. A pressing surface is provided on the side of the clamping block 352 where the supporting spring is located. By pressing the pressing surface, the clamping block 352 compresses the supporting spring. During this process, the clamping block 352 rotates around the hinge axis, increasing the axial distance between the limiting clamping guide wheel 357 and the feeding guide wheel 356. At this time, the thermocouple 353 is inserted, passing between the limiting clamping guide wheel 357 and the feeding guide wheel 356. The thermocouple 353 is inserted into the wire feeding needle 351. After the thermocouple 353 is inserted, the pressure on the clamping block 352 is released. At this time, the limiting clamping guide wheel 357 and the feeding guide wheel 356 stably clamp the thermocouple 353, and drive the feeding motor to run in the forward direction. The feeding guide wheel 356 rotates to push the thermocouple 353 to continuously replenish the wire feeding needle 351. When the feeding guide wheel 356 rotates, the limiting clamping guide wheel 357 rotates accordingly, limiting the pushing direction of the thermocouple 353 while assisting in pushing the thermocouple 353, and driving the feeding motor to run in the reverse direction.

[0039] The transmission assembly includes a drive motor, a drive gear, a rack, a guide rail, and a mounting bracket. The guide rail and the rack are both fixedly mounted on the column of the Z-axis fixed bracket 34. The guide rail and the rack are located on two opposite vertical surfaces of the column. The drive motor is fixedly mounted on the Z-axis movable bracket 33 via the mounting bracket. A guide block is fixedly mounted on the Z-axis movable bracket 33. The guide groove on the guide block engages with the guide rail. The end face of the mounting bracket slides against the non-tooth surface of the rack. The drive gear is driven and connected to the output end of the drive motor. The drive gear and the rack are engaged in transmission.

[0040] The drive motor rotates and drives the drive gear to rotate, which in turn drives the gear to mesh and move along the rack. This further drives the Z-axis moving frame 33 to move along the column of the Z-axis fixed frame 34 in the Z direction. At the same time, the X-axis support frame 32 is fixedly connected to the Z-axis moving frame 33, and the thermocouple extrusion assembly 35 is slidably mounted on the X-axis support frame 32. That is, the Z-axis moving frame 33 moves in the Z direction to adjust the position of the thermocouple extrusion assembly 35 in the Z direction.

[0041] The transmission assembly two includes a drive motor two, a drive gear two, a rack two, a guide rail two, and a mounting bracket two. The guide rail two and the rack two are both fixedly mounted on the X-direction support frame 32. The guide rail two and the rack two are located on the upper and lower end faces of the X-direction support frame 32, respectively. The drive motor two is fixedly mounted on the L-shaped frame 355 through the mounting bracket two. The guide block two is fixedly mounted on the electrocouple extrusion assembly 35. The guide groove of the guide block two is engaged with the guide rail two. The end face of the mounting bracket two slides against the non-tooth surface of the rack two. The drive gear two is driven and mounted on the output end of the drive motor two. The drive gear two and the rack two are driven and meshed.

[0042] The second drive motor rotates, causing the second drive gear to rotate. The second drive gear meshes with the second rack and moves along the rack, thereby causing the L-shaped frame 355 to move along the X direction, thus realizing the displacement of the electrocouple extrusion assembly 35 in the X direction.

[0043] A method for using a core board temperature testing machine for hot-pressed sheets:

[0044] S1. Assemble the core board temperature detection machine. The core board temperature detection machine is placed next to the hot press. The cutting assembly 2 and multiple temperature detection assemblies 3 are installed on the frame 1 of the detection machine. The installation positions of the multiple temperature detection assemblies 3 are determined according to the positions of the points in the core board that need to be measured. The wire feeding needle 351 of each temperature detection assembly 3 points towards the hot press where the core board is located.

[0045] S2. Insert thermocouples 353 into the core plate. Adjust the core plate thickness according to the actual needs of setting thermocouples 353. Adjust the position of the thermocouple extrusion assembly 35 in the X and Z directions by controlling drive motor 1 and drive motor 2, so that the wire feeding needle 351 is inserted between the layers of the core plate where thermocouples 353 need to be set. While the drive feeding motor is running to push the thermocouples 353 into the core plate, adjust drive motor 2 to run so that the wire feeding needle 351 is withdrawn from the core plate. During the withdrawal of the wire feeding needle 351, the thermocouples 353 remain in the core plate.

[0046] S3. Perform hot pressing on the core board. During the hot pressing process, thermocouple 353 monitors and provides feedback on the internal temperature of the core board in real time. The operator adjusts the hot press parameters according to the real-time feedback data to ensure the hot pressing quality of the core board.

[0047] S4. After the hot pressing process is completed, the control cylinder raises the tool holder 22 to cause multiple cutters 23 to cut multiple thermocouples 353. After the thermocouples 353 are cut, the cylinder drives the tool holder 22 to fall back to its original position. Then, the core plate is replaced and S1 to S3 are repeated. After the thermocouples 353 are cut, there are still thermocouples 353 outside the wire feeding needle 351. The drive control feeding motor runs in the opposite direction to push the thermocouples 353 until the thermocouples 353 are completely recycled into the wire feeding needle 351.

[0048] The cylinders and multiple motors in this testing machine are all automatically controlled using PLC technology, which is a mature and publicly available technology at present.

[0049] This testing machine is used in conjunction with existing multi-channel thermocouple temperature acquisition devices or PLCs, industrial computers, and other equipment with thermocouple input modules to acquire thermocouple temperature detection data in real time.

[0050] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A temperature testing machine for the core board of a hot-pressed sheet, characterized in that: The device includes a testing machine frame (1), a cutting assembly (2), and a temperature detection assembly (3). Multiple temperature detection assemblies (3) are mounted on the testing machine frame (1). The cutting assembly (2) is mounted on the testing machine frame (1). The cutting assembly (2) has the same number of cutting blades (23) as the temperature detection assemblies (3). Multiple temperature detection assemblies (3) are distributed along the Y direction on the testing machine frame (1). Each temperature detection assembly (3) can move along the X and Z directions.

2. The core board temperature testing machine for hot-pressed sheet metal according to claim 1, characterized in that: The cutting assembly (2) includes a cutting tool fixing plate (21), a cutting tool holder (22), a cutting tool (23), and a cross connecting plate (24). The cross connecting plate (24) is fixedly connected to the frame (1) of the testing machine. A cylinder is fixedly installed on the cross connecting plate (24). The cutting tool holder (22) is fixedly connected to the telescopic end of the cylinder and is lifted and lowered on the cross connecting plate (24). Multiple cutting tool holders are respectively aligned with multiple temperature detection components (3) on the cutting tool holder (22). Each cutting tool holder is detachably fixed and press-fitted with a cutting tool (23) through the cutting tool fixing plate (21). The blade of each cutting tool (23) faces upward.

3. The core board temperature testing machine for hot-pressed sheet metal according to claim 2, characterized in that: The cross connecting plate (24) has a through guide hole, and a guide post is fixedly installed on the tool holder (22). The guide post is aligned with the guide hole and is movably inserted in the guide hole. The length of the guide post is greater than the displacement stroke of the tool holder (22).

4. The core board temperature testing machine for hot-pressed sheet metal according to claim 2, characterized in that: Each of the temperature detection components (3) includes a fan (31), an X-axis support frame (32), a Z-axis moving frame (33), a Z-axis fixed frame (34), and a thermocouple extrusion assembly (35). The Z-axis fixed frame (34) is fixedly mounted on the frame (1) of the detection machine. The Z-axis moving frame (33) is slidably mounted on the Z-axis fixed frame (34) along the Z-direction via a transmission assembly. The X-axis support frame (32) is fixedly mounted on the Z-axis moving frame (33). The thermocouple extrusion assembly (35) is slidably mounted on the X-axis support frame (32) along the X-direction via a transmission assembly. The fan (31) is fixedly mounted on the thermocouple extrusion assembly (35).

5. The core board temperature testing machine for hot-pressed sheet metal according to claim 4, characterized in that: The thermocouple extrusion assembly (35) includes a wire feeding needle (351), a thermocouple storage chamber (354), an L-shaped frame (355), and a feeding motor. The L-shaped frame (355) is fixedly connected to the moving part of the transmission assembly two. The thermocouple storage chamber (354) for storing thermocouples (353) is fixedly installed on the L-shaped frame (355). The wire feeding needle (351) is fixedly installed on the L-shaped frame (355) through a needle seat. The wire feeding needle (351) is a hollow tube. The temperature sensing end of the thermocouple (353) passes through the outlet of the thermocouple storage chamber (354) and is installed in the wire feeding needle (351). The feeding motor is fixedly installed on the L-shaped frame (355). A feeding guide wheel (356) is installed on the output end of the feeding motor. The feeding guide wheel (356) rolls and pushes the thermocouple (353) to continuously supply it to the wire feeding needle (351).

6. The core board temperature testing machine for hot-pressed sheet metal according to claim 5, characterized in that: The thermocouple extrusion assembly (35) further includes a clamping block (352), which is disposed between the wire feeding needle (351) and the outlet of the thermocouple storage chamber (354). The clamping block (352) is hinged on the L-shaped frame (355). A supporting spring is clamped between the clamping block (352) and the needle seat. A feeding channel is provided on the clamping block (352). The thermocouple (353) passes through the feeding channel and is inserted into the wire feeding needle (351). A limiting clamping guide wheel (357) is hinged on the clamping block (352). The limiting clamping guide wheel (357) and the feeding guide wheel (356) are symmetrically disposed on both sides of the thermocouple (353) to fit and clamp the thermocouple (353).

7. The core board temperature testing machine for hot-pressed sheet metal according to claim 8, characterized in that: The transmission assembly includes a drive motor, a drive gear, a rack, a guide rail, and a mounting bracket. The guide rail and the rack are both fixed on the column of the Z-axis fixed bracket (34). The guide rail and the rack are located on two opposite vertical surfaces of the column. The drive motor is fixed on the Z-axis moving bracket (33) through the mounting bracket. The guide block is fixed on the Z-axis moving bracket (33). The guide groove on the guide block is engaged with the guide rail. The end face of the mounting bracket slides against the non-tooth surface of the rack. The drive gear is driven and connected to the output end of the drive motor. The drive gear and the rack are engaged in transmission. The transmission assembly 2 includes a drive motor 2, a drive gear 2, a rack 2, a guide rail 2, and a mounting bracket 2. The guide rail 2 and the rack 2 are both fixedly mounted on the X-direction support frame (32). The guide rail 2 and the rack 2 are located on the upper and lower end faces of the X-direction support frame (32), respectively. The drive motor 2 is fixedly mounted on the L-shaped frame (355) through the mounting bracket 2. The guide block 2 is fixedly mounted on the electrocouple extrusion assembly (35). The guide groove of the guide block 2 is engaged with the guide rail 2. The end face of the mounting bracket 2 slides against the non-tooth surface of the rack 2. The drive gear 2 is driven and mounted on the output end of the drive motor 2. The drive gear 2 and the rack 2 are driven and meshed.

8. The method of using a hot-pressed sheet core board temperature testing machine according to claims 1 to 7, characterized in that: S1. Assemble the core board temperature detection machine. The core board temperature detection machine is placed next to the hot press. The cutter assembly (2) and multiple temperature detection components (3) are installed on the machine frame (1). The installation positions of the multiple temperature detection components (3) are determined according to the positions of the points in the core board that need to be measured. The wire feeding needle (351) of each temperature detection component (3) points towards the hot press where the core board is located. S2. Insert thermocouples (353) into the core plate. Adjust the position of the thermocouple extrusion assembly (35) in the X and Z directions by controlling the first and second drive motors. Insert the wire feeding needle (351) into the core plate between the layers where thermocouples (353) need to be installed. While the drive motor is running to push the thermocouples (353) into the core plate, adjust the second drive motor to run so that the wire feeding needle (351) is withdrawn from the core plate. S3. Perform hot pressing on the core board. During the hot pressing process, the thermocouple (353) monitors and provides feedback on the internal temperature of the core board in real time. The operator adjusts the hot press parameters according to the real-time feedback data to ensure the hot pressing quality of the core board. S4. After the hot pressing process is completed, the control cylinder is used to raise the tool holder (22) to make multiple cutters (23) cut multiple thermocouples (353). Then the core plate is replaced and S1 to S3 are repeated.