Hot press diffusion welding apparatus

Abstract

The utility model provides a kind of hot pressure diffusion welding equipment, belong to high polymer material welding equipment technical field.This equipment includes frame, drive assembly, pressure detection module, temperature rising module and temperature detection module, rack has first pad and second pad from top to bottom;Drive assembly includes driving part and driving rod, driving part is set on rack, the both ends of driving rod are connected with driving part and second pad respectively, to make driving part drive second pad close or away from first pad;Pressure detection module is set between driving rod and second pad, for detecting the pressure that driving rod exerts to second pad;The quantity of temperature rising module and temperature detection module is two, and is respectively set in first pad and second pad and is oppositely arranged, and temperature detection module is used to detect the temperature of welding piece.Symmetrical setting temperature rising module and temperature detection module improve the detection and control precision of welding piece temperature.

Description

Technical Field

[0001] This utility model belongs to the technical field of polymer material welding equipment, and more specifically, relates to a hot-press diffusion welding device. Background Technology

[0002] Polymer materials possess advantages such as light weight, high temperature resistance, corrosion resistance, ease of processing, and low cost, and have been widely used in complex structural assemblies, replacing metal materials. Hot-press diffusion welding of polymer materials is a process that softens the material surface and allows diffusion between materials through heating and pressurization, thereby achieving material bonding. This technology is widely used in electronics, automotive, and medical fields for welding thermoplastic polymer materials (such as polyethylene, polypropylene, and polyvinyl chloride) and their composites. The key to hot-press diffusion welding lies in the precise control of temperature and pressure during the welding process to ensure the quality and performance of the weld joint. In polymer diffusion welding, traditional diffusion welding equipment is large and complex to operate, and the temperature detection area of ​​the weldment is too limited to represent the actual temperature of most areas of the weldment. This makes it difficult to accurately detect and control the actual welding temperature, thus hindering the automatic and precise control of welding temperature and pressure to achieve efficient and high-quality welding. Utility Model Content

[0003] The main objective of this application is to provide a hot-press diffusion welding device that can improve the accuracy of temperature detection in weldments.

[0004] To achieve the above objectives, this application proposes a hot-press diffusion welding device, including a frame, a drive assembly, a pressure detection module, a heating module, and a temperature detection module.

[0005] The frame has a first pad and a second pad from top to bottom;

[0006] The drive assembly includes a drive element and a drive rod. The drive element is disposed on the frame, and the two ends of the drive rod are respectively connected to the drive element and the second pad, so that the drive element drives the second pad to move closer to or away from the first pad.

[0007] The pressure detection module is disposed between the drive rod and the second pad, and is used to detect the pressure applied by the drive rod to the second pad.

[0008] There are two heating modules and two temperature detection modules, which are respectively set on the first pad and the second pad and face each other. The temperature detection module is used to detect the temperature of the solder.

[0009] Furthermore, the frame is provided with a guide assembly adapted to the second pad, the guide assembly being used to restrict the movement direction of the second pad.

[0010] Furthermore, the guiding assembly includes a guide post disposed on the frame, and the second pad is slidably disposed on the guide post so that the second pad slides along the guide post.

[0011] Furthermore, the guide posts are multiple and symmetrically arranged.

[0012] Furthermore, the driving component includes a motor, a coupling, and a trapezoidal lead screw. The coupling is used to connect the motor and the trapezoidal lead screw, and the trapezoidal lead screw is connected to the driving rod so that the motor can drive the driving rod to perform linear motion.

[0013] Furthermore, the heating module uses a cast copper heating plate.

[0014] Furthermore, the temperature detection module employs a non-contact infrared temperature sensor, which detects the temperature of the weldment by receiving the infrared radiation wave emitted by the weldment under test.

[0015] Furthermore, the non-contact infrared temperature sensor is model YFL-TA500CL.

[0016] Furthermore, it also includes a touch screen, which communicates with the pressure detection module and the temperature detection module to display real-time temperature and pressure curves.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting two symmetrical heating modules and temperature detection modules at the first and second solder pads and setting them in opposite directions, the temperature of the upper and lower sides of the workpiece can be detected simultaneously, reducing the error caused by only detecting the temperature of one side of the workpiece and improving the accuracy of the workpiece temperature detection; at the same time, the two heating modules can also adjust the temperature of the upper and lower sides of the workpiece respectively, improving the workpiece temperature control capability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the hot-press diffusion welding equipment of this utility model;

[0019] Figure 2 This is an axial view of the hot-press diffusion welding equipment of this utility model;

[0020] Figure 3 This is a front view of the hot-press diffusion welding equipment of this utility model.

[0021] The attached figures are labeled as follows: 1. Frame; 110. First pad; 120. Second pad; 130. Guide post; 2. Drive assembly; 210. Drive component; 220. Drive rod; 3. Pressure detection module; 4. Heating module; 5. Temperature detection module. Detailed Implementation

[0022] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0023] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0024] Example

[0025] Please see Figures 1 to 3 This embodiment discloses a hot-press diffusion welding device, including a frame 1, a drive assembly 2, a pressure detection module 3, a heating module 4, and a temperature detection module 5.

[0026] The frame 1 has a first solder pad 110 and a second solder pad 120 from top to bottom. The drive assembly 2 drives the second solder pad 120 at the lower end of the welding machine to move upward and contact the first solder pad 110 of the welding machine to complete the hot pressing welding process of the workpiece.

[0027] The drive assembly 2 includes a drive element 210 and a drive rod 220. The drive element 210 is mounted on the frame 1. Both ends of the drive rod 220 are connected to the drive element 210 and the second pad 120, respectively, so that the drive element 210 drives the second pad 120 closer to or further away from the first pad 110. The drive element 210 includes a motor, a coupling, and a trapezoidal lead screw. The motor provides rotational power, and its type is selected according to load and accuracy requirements. The coupling connects the motor and the lead screw, transmitting torque and adjusting the speed. The trapezoidal lead screw is connected to the drive rod 220, converting the motor's rotational motion into linear motion, enabling the motor to drive the drive rod 220 in linear motion. The trapezoidal lead screw has good self-locking properties and is suitable for low speed and high load. Alternatively, the drive element 210 can also be driven by a hydraulic system.

[0028] The pressure detection module 3 is located between the drive rod 220 and the second solder pad 120 to detect the pressure applied by the drive rod 220 to the second solder pad 120. It typically uses a strain gauge pressure sensor to measure the elastic deformation caused by the welding pressure and outputs a millivolt-level differential signal (mV). This signal needs to be processed by a signal conditioning module (including Wheatstone bridge excitation, amplification, and filtering) before being converted by the transmitter into a 4-20mA or 0-10V standard industrial signal. The transmitter output is connected to the PLC's analog input module (such as SM1231 AI). The module converts the analog signal (e.g., 4-20mA corresponding to 0-27648 digital values) into a digital value, which is then calibrated and calculated to display as a visually intuitive pressure value (e.g., 0-10MPa). The overall system accuracy can reach ±0.5% FS, suitable for real-time monitoring of hot-press diffusion welding machines.

[0029] There are two heating modules 4 and two temperature detection modules 5, each located on the first pad 110 and the second pad 120 respectively, facing each other. The temperature detection module 5 is used to detect the temperature of the weldment. The heating module 4 uses a cast copper heating plate, and the temperature detection module 5 uses a non-contact infrared temperature sensor. The non-contact infrared temperature sensor (online probe) measures the temperature of the weldment. The online infrared temperature sensor model is YFL-TA500CL. The online probe does not contact the heated weldment. It receives the infrared radiation wave from the weldment and converts the temperature data into an electrical signal, which is then standardized into a 4-20mA current signal by a built-in transmitter. This signal is connected to the PLC's analog input module (such as SM1231 AI), which converts the analog signal into a digital signal for PLC processing. The PLC program needs to process these input signals. The PID output generates a PWM signal through a digital output module (such as SM1222 DQ), which drives the on / off duty cycle of the solid-state relay (SSR) to control the power output of the heater, achieving rapid heating.

[0030] The hot-press diffusion welding equipment provided in this embodiment has two symmetrical heating modules 4 and temperature detection modules 5 set at the first welding pad 110 and the second welding pad 120, and set in opposite directions. This allows for simultaneous detection of the temperature on both the upper and lower sides of the weldment, reducing the error caused by only detecting the temperature of one side of the weldment and improving the accuracy of the weldment temperature detection. At the same time, the two heating modules 4 can also adjust the temperature on the upper and lower sides of the weldment respectively, improving the weldment temperature control capability.

[0031] In one possible embodiment, the frame 1 is provided with a guide assembly adapted to the second solder pad 120, which restricts the movement direction of the second solder pad 120. The guide assembly includes guide posts 130, which are disposed on the frame 1. The second solder pad 120 is slidably disposed on the guide posts 130, so that the second solder pad 120 slides along the guide posts 130. Multiple guide posts 130 are provided and symmetrically arranged. By restricting the degree of freedom of the second solder pad 120 through the guide posts 130, stable vertical movement is ensured. This ensures that when the drive member 210 moves the second solder pad 120 upward and contacts the first solder pad 110, the thermoforming process of the solder joint is successfully completed.

[0032] In one possible embodiment, a touchscreen is also included. The touchscreen communicates with the pressure detection module 3 and the temperature detection module 5 to display real-time temperature and pressure curves. The touchscreen is a TP700 Comfort touchscreen, which communicates with the PLC (CPU1214C) to display real-time temperature and pressure curves and supports parameter setting. The PLC is connected to a host computer via Profinet to realize data monitoring and remote process parameter control.

[0033] The hot-press diffusion welding equipment provided in this embodiment converts the rotational motion of the motor into linear motion through a trapezoidal lead screw, driving the drive rod 220 to move upward linearly, thereby causing the second welding pad 120 to move upward, so that the workpiece contacts the first welding pad 110; at the same time, the heating module 4, the temperature detection module 5, and the pressure detection module 3 are activated. The heating module 4 heats both ends of the workpiece simultaneously, the temperature detection module 5 monitors the temperature at both ends of the workpiece in real time and adjusts the heating module 4 in real time, and adjusts the torque output of the motor according to the pressure detection module 3, and then successfully completes the hot-press welding process of the workpiece.

[0034] In the description of this utility model, it should be understood that the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A hot-press diffusion welding device, characterized in that, It includes a frame (1), a drive assembly (2), a pressure detection module (3), a heating module (4), and a temperature detection module (5). The frame (1) has a first pad (110) and a second pad (120) from top to bottom. The drive assembly (2) includes a drive member (210) and a drive rod (220). The drive member (210) is disposed on the frame (1). The two ends of the drive rod (220) are respectively connected to the drive member (210) and the second pad (120) so that the drive member (210) drives the second pad (120) to move closer to or away from the first pad (110). The pressure detection module (3) is disposed between the drive rod (220) and the second pad (120) for detecting the pressure applied by the drive rod (220) to the second pad (120); The heating module (4) and the temperature detection module (5) are both two in number, and are respectively set on the first pad (110) and the second pad (120) and are arranged facing each other. The temperature detection module (5) is used to detect the temperature of the weldment.

2. The hot-press diffusion welding equipment according to claim 1, characterized in that, The frame (1) is provided with a guide assembly adapted to the second pad (120), the guide assembly being used to limit the movement direction of the second pad (120).

3. The hot-press diffusion welding equipment according to claim 2, characterized in that, The guiding assembly includes a guide post (130) disposed on the frame (1), and the second pad (120) is slidably disposed on the guide post (130) so that the second pad (120) slides along the guide post (130).

4. The hot-press diffusion welding equipment according to claim 3, characterized in that, The number of guide posts (130) is multiple and they are arranged symmetrically.

5. The hot-press diffusion welding equipment according to claim 1, characterized in that, The drive unit (210) includes a motor, a coupling and a trapezoidal lead screw. The coupling is used to connect the motor and the trapezoidal lead screw. The trapezoidal lead screw is connected to the drive rod (220) so that the motor can drive the drive rod (220) to perform linear motion.

6. The hot-press diffusion welding equipment according to claim 1, characterized in that, The heating module (4) uses a cast copper heating plate.

7. The hot-press diffusion welding equipment according to claim 1, characterized in that, The temperature detection module (5) uses a non-contact infrared temperature sensor to detect the temperature of the weldment by receiving the infrared radiation wave of the weldment being tested.

8. The hot-press diffusion welding equipment according to claim 7, characterized in that, The non-contact infrared temperature sensor is model YFL-TA500CL.

9. The hot-press diffusion welding equipment according to claim 1, characterized in that, It also includes a touch screen, which communicates with the pressure detection module (3) and the temperature detection module (5) to display real-time temperature and pressure curves.

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