Force control temperature measuring device

Abstract

The application discloses a force control temperature measuring device, aiming to provide a force control temperature measuring device with simple structure, high efficiency, low cost, precise force control and stable temperature measurement. The application comprises a bottom plate, a force measuring module, a test fixture and a temperature measuring module. The bottom plate is further provided with a force control assembly. The force control assembly comprises a vertical movement driving module and a slide rail mounting plate. The vertical movement driving module is arranged on the bottom plate. The slide rail mounting plate is arranged vertically and connected with the driving end of the vertical movement driving module. The slide rail mounting plate is provided with a slide rail and a sliding block connected with the slide rail. The length direction of the slide rail is in the vertical direction. The sliding block is provided with a horizontal mounting plate. The upper surface of the horizontal mounting plate is provided with at least one weight. The temperature measuring module is arranged on the lower surface of the horizontal mounting plate. The side surface of the slide rail mounting plate is provided with a lifting block. The side surface of the horizontal mounting plate is provided with a blocking block matched with the lifting block. The application is applied to the technical field of temperature measuring equipment.

Description

Technical Field

[0001] This invention relates to the technical field of temperature measuring equipment for 3C products, and particularly to a temperature measuring device with controllable pressure. Background Technology

[0002] In the field of mass temperature testing of 3C products, it is often necessary to ensure stable contact between the temperature measuring module and the product being tested, while applying precise and stable contact pressure. The stability of the contact pressure directly affects the accuracy and repeatability of the temperature measurement, and the efficiency and cost of the equipment also directly determine the economics of mass production testing.

[0003] Existing temperature measurement equipment either employs a servo motor coupled with a precision ball screw drive, which achieves high force control accuracy but suffers from complex structure, high manufacturing costs, and operational efficiency that is difficult to adapt to batch testing needs; or it uses a simple manual force control method, resulting in poor force control accuracy, large pressure fluctuations, and a tendency for poor or excessive contact between the temperature probe and the object being measured, affecting not only temperature measurement accuracy but also potentially damaging the product. Furthermore, even when force feedback structures are incorporated, some equipment exhibits significant drawbacks: firstly, the use of external sensors often leads to losses and signal interference during force transmission, resulting in distorted feedback data; secondly, it can only perform single pressure detection without closed-loop dynamic calibration, failing to compensate for pressure deviations caused by cylinder fluctuations, slight weight offsets, or differences in the surface flatness of the product being tested, making it difficult to stabilize force control accuracy at the ±0.2g level; and thirdly, it lacks a pressure anomaly warning mechanism, making it prone to product or equipment damage due to pressure runaway, and its adaptability is limited, failing to meet the testing needs of products with different specifications. Meanwhile, most temperature measurement modules use ordinary temperature measurement modules, which have insufficient temperature measurement stability and adaptability, further limiting the practicality of the equipment.

[0004] Given the shortcomings of the existing technologies, there is an urgent need to develop a force-controlled temperature measurement device that is simple in structure, highly efficient, low in cost, and capable of precise force control and stable temperature measurement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a force-controlled temperature measuring device that is simple in structure, highly efficient, low in cost, and can achieve precise force control and stable temperature measurement.

[0006] The technical solution adopted in this invention is as follows: This invention includes a base plate, a force measuring module disposed on the base plate, a test fixture located on the force measuring module, and a temperature measuring module located above the test fixture. A force control component is also disposed on the base plate. The force control component includes a vertical motion drive module and a slide rail mounting plate. The vertical motion drive module is disposed on the base plate. The slide rail mounting plate is vertically disposed and connected to the drive end of the vertical motion drive module. A slide rail and a slider connected to the slide rail are disposed on the slide rail mounting plate. The length direction of the slide rail is vertical. A horizontal mounting plate is disposed on the slider. At least one weight is placed on the upper surface of the horizontal mounting plate. The temperature measuring module is disposed on the lower surface of the horizontal mounting plate. A lifting block is disposed on the side of the slide rail mounting plate. The horizontal mounting plate has a blocking block on its side that matches the lifting block. During testing, the vertical motion drive module drives the slide rail mounting plate downward. The blocking block rests against the lifting block under the weight of the slider, the horizontal mounting plate, the weight, and the temperature measuring module. When the temperature measuring module is against the product under test on the test fixture, the slide rail mounting plate continues to move downward, and the blocking block separates from the lifting block. At this time, the pressure on the product under test is the sum of the weights of the slider, the horizontal mounting plate, the weight, and the temperature measuring module. After the test is completed, the vertical motion drive module drives the slide rail mounting plate upward. After the slide rail mounting plate rises to a certain height, it presses against the blocking block and continues to move upward, causing the temperature measuring module to separate from the product under test.

[0007] Furthermore, a connecting plate is provided on one side of the horizontal mounting plate, and the horizontal mounting plate is connected to the slider through the connecting plate. The blocking block is provided on the side of the connecting plate.

[0008] Furthermore, the upper surface of the horizontal mounting plate is provided with at least one weight limiting rod, and the weight is provided with a limiting through hole that matches the weight limiting rod. In use, the weight is installed on the weight limiting rod through the limiting through hole.

[0009] Furthermore, the vertical motion drive module includes a vertical mounting plate, a cylinder disposed on one side of the vertical mounting plate, and a top plate disposed on the output end of the cylinder. The cylinder outputs in the vertical direction. The upper end of the slide rail mounting plate is connected to the top plate. The slide rail mounting plate and the cylinder are both on the same side of the vertical mounting plate.

[0010] Furthermore, a vertical slide rail is provided on the other side of the vertical mounting plate, a vertical slider is slidably mounted on the vertical slide rail, a back plate is fixedly mounted on the vertical slider, and the upper end of the back plate is connected to the top plate.

[0011] Furthermore, a buffer adapted to the top plate is provided on one side of the vertical mounting plate.

[0012] Furthermore, a first screw is threaded to the top of the vertical mounting plate, and a second screw is threaded to the top plate, with the tail of the second screw passing through the top plate and located directly above the first screw.

[0013] Furthermore, a pair of infrared sensing modules are provided on the base plate. If the product under test on the test fixture is not placed evenly, it will block the infrared rays of the infrared sensing modules.

[0014] Furthermore, the force measuring module includes a force measuring housing disposed on the base plate and a force measuring unit disposed within the force measuring housing. The force measuring housing has an opening that is sleeved around the periphery of the test fixture. The test fixture is slidably connected to the opening. The force measuring unit is located directly below the opening, and the test fixture rests on the force measuring unit.

[0015] Furthermore, the force measuring unit is a force sensor, and a support plate is provided on the force sensor, with the test fixture placed on the support plate. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the invention during testing; Figure 3 This is a side view of the invention after testing. Figure 4 This is a schematic diagram of the weight assembly. Figure 5 This is a schematic diagram of the temperature sensing component.

[0017] 1. Base plate; 2. Force measuring module; 3. Test fixture; 4. Temperature measurement module; 5. Force control component; 6. Vertical motion drive module; 7. Slide rail mounting plate; 8. Slide rail; 9. Slider; 10 Horizontal mounting plate; 11 Weights; 12 Lifting block; 13. Blocking block; 14. Connecting plate; 15. Weight limit rod; 16 Vertical mounting plate; 17 Cylinder; 18 Top plate; 19 Vertical slide rail; 20 Vertical slider; 21 Back plate; 22 Buffer; 23 First screw; 24 Second screw; 25 Infrared sensing module; 26 Force measuring housing; 27 Force measuring unit; 28 Opening; 29 Support plate. Detailed Implementation

[0018] like Figures 1 to 5 As shown, in this embodiment, the present invention includes a base plate 1, a force measuring module 2 disposed on the base plate 1, a test fixture 3 located on the force measuring module 2, and a temperature measuring module 4 located above the test fixture 3. A force control component 5 is also disposed on the base plate 1. The force control component 5 includes a vertical motion drive module 6 and a slide rail mounting plate 7. The vertical motion drive module 6 is disposed on the base plate 1. The slide rail mounting plate 7 is vertically disposed and connected to the drive end of the vertical motion drive module 6. A slide rail 8 and a slider 9 connected to the slide rail 8 are disposed on the slide rail mounting plate 7. The length direction of the slide rail 8 is vertical. A horizontal mounting plate 10 is disposed on the slider 9. At least one weight 11 is placed on the upper surface of the horizontal mounting plate 10. The temperature measuring module 4 is disposed on the lower surface of the horizontal mounting plate 10. A lifting block 12 is disposed on the side of the slide rail mounting plate 7, and a blocking block 13 adapted to the lifting block 12 is disposed on the side of the horizontal mounting plate 10.

[0019] During testing, the vertical motion drive module 6 drives the slide rail mounting plate 7 to move downwards. The blocking block 13 rests against the lifting block 12 under the weight of the slider 9, the horizontal mounting plate 10, the weight 11, and the temperature measuring module 4. When the temperature measuring module 4 is against the product under test on the test fixture 3, the slide rail mounting plate 7 continues to move downwards, and the blocking block 13 separates from the lifting block 12. At this time, the pressure on the product under test is the sum of the weights of the slider 9, the horizontal mounting plate 10, the weight 11, and the temperature measuring module 4. After the test is completed, the vertical motion drive module 6 drives the slide rail mounting plate 7 to move upwards. After the slide rail mounting plate 7 rises to a certain height, it presses against the blocking block 13 and continues to move upwards, causing the temperature measuring module 4 to separate from the product under test. This invention eliminates the need for complex force sensors and real-time closed-loop force control systems. The contact pressure is provided solely by the combined weight of the slider, mounting plate, weights, and temperature measuring module. The pressure value is stable and drift-free, and the pressure can be flexibly adjusted by adding or removing weights. Through the purely mechanical coordination of the slide rail, slider, lifting block, and blocking block, the entire process of "automatic contact - constant pressure testing - automatic separation" is completed. Maintenance is simple, and long-term operational stability is strong. The constant and moderate contact pressure ensures sufficient contact between the temperature probe and the tested surface without damaging the workpiece due to pressure overload. This invention achieves constant, precise, and adjustable contact pressure, significantly improving the consistency and reliability of the test.

[0020] In this embodiment, a connecting plate 14 is provided on one side of the horizontal mounting plate 10. The horizontal mounting plate 10 is connected to the slider 9 through the connecting plate 14, and the blocking block 13 is disposed on the side of the connecting plate 14. The blocking block is installed via the connecting plate, providing ample operating space and making it easier to disassemble, install, and adjust its position. As a transitional connector, the connecting plate evenly transmits the lifting force on the blocking block to the slider and the horizontal mounting plate, preventing localized stress concentration and deformation of the horizontal mounting plate, and extending the structural service life. In this embodiment, the horizontal mounting plate 10 and the connecting plate 14 are designed as a single unit, forming an L-shape, which makes the overall structure more stable.

[0021] like Figure 4 As shown, in this embodiment, the upper surface of the horizontal mounting plate 10 is provided with two weight limiting rods 15. The weight 11 is provided with a limiting through hole adapted to the weight limiting rod 15. In use, the weight 11 is installed on the weight limiting rod 15 through the limiting through hole. In this embodiment, the contact pressure reference value between the temperature measuring module 4 and the product under test is set by a detachable standard weight assembly. The contact pressure can be flexibly adjusted by changing weights of different specifications, such as 5g, 10g, 20g, 50g, etc., to adapt to products under test of different materials and thicknesses, which is the basis for achieving force control accuracy. At the same time, the two limiting rods pass through the limiting through hole of the weight, which can form a bidirectional limiting of the weight, preventing the weight from sliding or tipping over during the test, ensuring that the weight is always in the center position of the horizontal mounting plate, and the force is even and not off-center. The weights will not shift due to displacement, maintaining a consistently downward gravitational force output without generating additional lateral forces. This ensures that the pressure applied to the product under test perfectly matches the preset total gravity, resulting in more accurate test data. The weights can be directly stacked along the limiting rods without repeated alignment adjustments, improving efficiency and preventing accidental falls that could injure the workpiece or operators, thus enhancing operational safety. Multiple weights can be sequentially strung on the two limiting rods through the limiting holes, accommodating different weight combinations and allowing for flexible adjustment of the test pressure.

[0022] In this embodiment, the vertical motion drive module 6 includes a vertical mounting plate 16, a cylinder 17 disposed on one side of the vertical mounting plate 16, and a top plate 18 disposed at the output end of the cylinder 17. The cylinder 17 outputs in the vertical direction. The upper end of the slide rail mounting plate 7 is connected to the top plate 18. The slide rail mounting plate 7 and the cylinder 17 are both on the same side of the vertical mounting plate 16. The vertical motion drive module 6 uses a standard cylinder as a power source to drive the temperature measurement module to move up and down, realizing rapid contact and separation between the temperature probe and the product under test. It has the characteristics of rapid response, simple structure, and low cost. It is a core component for improving batch testing efficiency. It is fixedly connected to the temperature measurement module and works together to complete the temperature measurement operation. The cylinder 17 and the slide rail mounting plate are fixed on the vertical mounting plate on the same side. The overall structure is highly integrated, which greatly reduces the lateral space occupation. The overall size of the device is smaller and adapts to the compact installation requirements of testing equipment. The cylinder output end directly drives the slide rail mounting plate to move through the top plate. The power transmission path is short and the rigidity is high. No additional lateral torque is generated during the movement, and the operation is smooth and does not shake.

[0023] In this embodiment, a vertical slide rail 19 is provided on the other side of the vertical mounting plate 16. A vertical slider 20 is slidably mounted on the vertical slide rail 19, and a back plate 21 is fixedly mounted on the vertical slider 20. The upper end of the back plate 21 is connected to the top plate 18. The vertical slide rail and the slider cooperate to provide rigid guiding constraints for the top plate and the slide rail mounting plate, avoiding lateral offset and shaking during cylinder drive, and ensuring that the temperature measuring module always rises and falls smoothly in the vertical direction. The back plate 21 shares the load of the top plate through the vertical slider 20, avoiding the cylinder output end from bearing excessive radial force for a long time, extending the service life of the cylinder, and improving the rigidity and stability of the overall structure. The linear slide rail has low and uniform sliding friction resistance, and the lifting process is smooth, allowing the temperature measuring module to smoothly fit the product to be measured, avoiding impact damage to the workpiece, and ensuring the stability of the contact pressure. Arranging the guide component on the other side of the vertical mounting plate, without interfering with the drive side components, results in higher space utilization and facilitates subsequent maintenance and accuracy calibration.

[0024] In this embodiment, a buffer 22 adapted to the top plate 18 is provided on one side of the vertical mounting plate 16. The buffer 22 absorbs the impact kinetic energy when the top plate moves to the end of its stroke, preventing the top plate from directly contacting the vertical mounting plate and causing violent vibration, thus preventing the weights and temperature measuring module from bouncing and shifting, and ensuring accurate and stable test pressure. The design of the buffer 22 can significantly reduce the instantaneous impact load on components such as cylinders and slide rails, reduce component wear, extend the service life of the entire motion module, and reduce the frequency of equipment maintenance. The buffer can achieve linear and smooth deceleration with zero rebound, avoiding secondary collisions between the temperature measuring module and the product under test caused by the top plate rebound, ensuring the smoothness of the temperature measurement contact process, and improving the consistency of test data.

[0025] In this embodiment, a first screw 23 is threaded to the top of the vertical mounting plate 16, and a second screw 24 is threaded to the top plate 18. The tail of the second screw 24 passes through the top plate 18 and is located directly above the first screw 23. By turning the first screw, its top height can be precisely adjusted. Together with the second screw directly above it, it directly limits the lowest position of the top plate's downward movement. This forms a double limit protection with the buffer mentioned above. Even if the buffer fails, the two opposing screws can still make hard contact to stop the top plate, preventing damage to components due to excessive movement. The extension of both screws can be independently fine-tuned, allowing for quick calibration of the top plate's limit travel position without modifying other mechanical structures, significantly reducing the difficulty of device assembly and adjustment. The limit arrangement directly utilizes the existing structure of the vertical mounting plate and the top plate, eliminating the need for additional external limit blocks. The overall structure is simple and does not occupy extra equipment space.

[0026] In this embodiment, a pair of infrared sensing modules 25 are provided on the base plate 1. Uneven placement of the product under test on the test fixture 3 will block the infrared rays emitted by the infrared sensing modules 25. Based on the principle of infrared beam blocking detection, uneven placement can be quickly identified without contact with the product under test, with a detection response speed down to the microsecond level, without causing additional wear to the workpiece. Uneven placement of the product will block the infrared light path, and the system can immediately trigger an alarm and pause the test, avoiding improper contact of the temperature sensing module and uneven pressure distribution due to workpiece tilt, thus ensuring the accuracy of test data from the source. The infrared sensing modules are small in size and can be directly integrated into the base plate, fitting the compact layout of the device. They are also stable in operation and not easily affected by ambient temperature, maintaining stable detection performance under long-term testing conditions. There is no need for repeated manual visual inspection of the workpiece placement; the equipment can autonomously complete the compliance verification, significantly reducing human error and improving overall testing efficiency.

[0027] like Figure 5As shown, in this embodiment, the force measuring module 2 includes a force measuring housing 26 disposed on the base plate 1 and a force measuring unit 27 disposed within the force measuring housing 26. The force measuring housing 26 has an opening 28 that fits around the test fixture 3. The test fixture 3 is slidably connected to the opening 28. The force measuring unit 27 is located directly below the opening 28, and the test fixture 3 rests on the force measuring unit 27. In this embodiment, the force measuring unit 27 is a force sensor, specifically a load cell / weighing sensor. It employs a high-precision miniature design with a measurement accuracy ≤ ±1g and a response time ≤ 0.1s. Embedded within the force measuring housing 26, it can directly receive the direct force of contact pressure, capture dynamic pressure changes in real time, and convert them into electrical signals, providing accurate data support for dynamic pressure calibration. Embedding the sensor tightly within the bottom of the force measuring housing 26 allows the sensor to directly receive the contact pressure between the temperature measuring module and the product under test, avoiding the defects of existing external sensors such as force transmission loss and signal interference, ensuring the authenticity and timeliness of the feedback data. The force sensor is equipped with a support plate 29, and the test fixture 3 is placed on the support plate 29. The test fixture sits directly above the force measuring unit, resulting in a short pressure transmission path and no lateral force loss. This allows for accurate acquisition of the actual pressure value experienced by the product under test, verifying the true effect of the weight counterweight and avoiding discrepancies between theoretical gravity and actual force. The force measuring unit is completely enclosed within the force measuring housing, isolating it from dust and debris that may occur during testing and preventing accidental damage to the precision force measuring components from external impacts, significantly improving the long-term operational stability of the force measuring module. The test fixture is externally limited and slidably installed through an opening on the housing, allowing for quick alignment and preventing installation misalignment. It also limits the horizontal movement of the test fixture, ensuring that the pressure always acts vertically at the center of the force measuring unit.

[0028] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A force-controlled temperature measuring device, comprising a base plate (1), a force measuring module (2) disposed on the base plate (1), a test fixture (3) located on the force measuring module (2), and a temperature measuring module (4) located above the test fixture (3), characterized in that: The base plate (1) is also provided with a force control component (5), which includes a vertical motion drive module (6) and a slide rail mounting plate (7). The vertical motion drive module (6) is provided on the base plate (1). The slide rail mounting plate (7) is vertically arranged and connected to the drive end of the vertical motion drive module (6). The slide rail mounting plate (7) is provided with a slide rail (8) and a slider (9) connected to the slide rail (8). The length direction of the slide rail (8) is in the vertical direction. The slider (9) is provided with a horizontal mounting plate (10). At least one weight (11) is placed on the upper surface of the horizontal mounting plate (10). The temperature measuring module (4) is provided on the lower surface of the horizontal mounting plate (10). The side of the slide rail mounting plate (7) is provided with a lifting block (12). The side of the horizontal mounting plate (10) is provided with a blocking block (13) that matches the lifting block (12). During testing, The vertical motion drive module (6) drives the slide rail mounting plate (7) to move downward. The blocking block (13) rests on the lifting block (12) under the weight of the slider (9), the horizontal mounting plate (10), the weight (11), and the temperature measuring module (4). When the temperature measuring module (4) is attached to the product to be tested on the test fixture (3), the slide rail mounting plate (7) continues to move downward, and the blocking block (13) separates from the lifting block (12). At this time, the pressure on the product to be tested is the sum of the weight of the slider (9), the horizontal mounting plate (10), the weight (11), and the temperature measuring module (4). After the test is completed, the vertical motion drive module (6) drives the slide rail mounting plate (7) to move upward. After the slide rail mounting plate (7) rises to a certain height, it presses against the blocking block (13) and continues to move upward, so that the temperature measuring module (4) separates from the product to be tested.

2. The force-controlled temperature measuring device according to claim 1, characterized in that: A connecting plate (14) is provided on one side of the horizontal mounting plate (10). The horizontal mounting plate (10) is connected to the slider (9) through the connecting plate (14). The blocking block (13) is provided on the side of the connecting plate (14).

3. The force-controlled temperature measuring device according to claim 1, characterized in that: The upper surface of the horizontal mounting plate (10) is provided with at least one weight limiting rod (15). The weight (11) is provided with a limiting through hole that is adapted to the weight limiting rod (15). In use, the weight (11) is installed on the weight limiting rod (15) through the limiting through hole.

4. The force-controlled temperature measuring device according to claim 1, characterized in that: The vertical motion drive module (6) includes a vertical mounting plate (16), a cylinder (17) disposed on one side of the vertical mounting plate (16), and a top plate (18) disposed at the output end of the cylinder (17). The cylinder (17) outputs in the vertical direction. The upper end of the slide rail mounting plate (7) is connected to the top plate (18). The slide rail mounting plate (7) and the cylinder (17) are both on the same side of the vertical mounting plate (16).

5. The force-controlled temperature measuring device according to claim 4, characterized in that: A vertical slide rail (19) is provided on the other side of the vertical mounting plate (16). A vertical slider (20) is slidably provided on the vertical slide rail (19). A back plate (21) is fixedly provided on the vertical slider (20). The upper end of the back plate (21) is connected to the top plate (18).

6. The force-controlled temperature measuring device according to claim 5, characterized in that: A buffer (22) adapted to the top plate (18) is provided on one side of the vertical mounting plate (16).

7. The force-controlled temperature measuring device according to claim 6, characterized in that: The top of the vertical mounting plate (16) is threaded with a first screw (23), and the top plate (18) is threaded with a second screw (24). The tail of the second screw (24) passes through the top plate (18) and is located directly above the first screw (23).

8. The force-controlled temperature measuring device according to claim 1, characterized in that: A pair of infrared sensing modules (25) are provided on the base plate (1). If the product to be tested on the test fixture (3) is not placed properly, it will block the infrared rays of the infrared sensing module (25).

9. The force-controlled temperature measuring device according to claim 1, characterized in that: The force measuring module (2) includes a force measuring housing (26) disposed on the base plate (1) and a force measuring unit (27) disposed inside the force measuring housing (26). The force measuring housing (26) has an opening (28) sleeved around the test fixture (3). The test fixture (3) is slidably connected to the opening (28). The force measuring unit (27) is located directly below the opening (28). The test fixture (3) rests on the force measuring unit (27).

10. A force-controlled temperature measuring device according to claim 9, characterized in that: The force measuring unit (27) is a force sensor, and a support plate (29) is provided on the force sensor. The test fixture (3) is placed on the support plate (29).

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