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CN-121988851-A - Pressure measurement dual-purpose platform suitable for micro-assembly

CN121988851ACN 121988851 ACN121988851 ACN 121988851ACN-121988851-A

Abstract

The invention discloses a pressure measurement dual-purpose platform suitable for micro assembly, and relates to the technical field of micro assembly welding and testing platforms. The micro-assembly welding machine comprises a base, a movable truss, a dual-purpose press-test head, a thermocouple probe and an electric test probe, wherein the movable truss is arranged on the base and can move along the X-axis direction of the base, the dual-purpose press-test head comprises a press-test head and the electric test head, the dual-purpose press-test head is connected with the movable truss and can move along the Y-axis direction of the base and the Z-axis direction of the base on the movable truss, the electric test head is the thermocouple probe when being used for welding in a micro-assembly process, the pressure and the temperature in the welding process are controlled through the press-test head and the thermocouple probe, and the electric test head is the electric test probe when being used for electric test in the micro-assembly process. The pressure measurement dual-purpose platform suitable for micro assembly is suitable for welding various products in the micro assembly process and electric measurement parts after assembly.

Inventors

  • FENG XUE
  • LI XINWEI
  • LI HAIBO
  • Xu Jile

Assignees

  • 浙江清华柔性电子技术研究院
  • 清华大学

Dates

Publication Date
20260508
Application Date
20241106

Claims (10)

  1. 1. A pressure testing dual-purpose platform suitable for micro-assembly, comprising: a base (1); The movable truss (2) is arranged on the base (1) and can move along the X-axis direction of the base (1); The pressure measurement dual-purpose head (3) comprises a pressure welding head (301) and an electric test head (302), wherein the pressure measurement dual-purpose head (3) is connected with the movable truss (2) and can move on the movable truss (2) along the Y-axis direction of the base (1) and the Z-axis direction of the base (1), when the pressure measurement dual-purpose head is used for welding in a micro-assembly process, the electric test head (302) is a thermocouple probe, the pressure and the temperature in the welding process are controlled through the pressure welding head (301) and the thermocouple probe, and when the pressure measurement dual-purpose head is used for electric test in the micro-assembly process, the electric test head (302) is an electric test probe.
  2. 2. The dual-purpose platen for micro-assembly as claimed in claim 1, wherein, The movable truss (2) moves along the X-axis direction of the base (1) through a first ball screw (201), the pressure measurement dual-purpose head (3) moves along the Y-axis direction of the base (1) through a second ball screw (202), and the pressure measurement dual-purpose head (3) moves along the Z-axis direction of the base (1) through threaded rotation.
  3. 3. The dual-purpose pressure measurement platform suitable for micro assembly according to claim 2, wherein the first ball screw (201) is used for moving the movable truss (2) along the X-axis direction of the base (1) through manual adjustment or/and motor driving adjustment, the second ball screw (202) is used for moving the dual-purpose pressure measurement head (3) along the Y-axis direction of the base (1) through manual adjustment or/and motor driving adjustment, and the dual-purpose pressure measurement head (3) is used for moving along the Z-axis direction of the base (1) through manual adjustment and screw rotation.
  4. 4. The dual-purpose platen for micro-assembly according to claim 3, The manual adjustment of the first ball screw (201) is controlled by an operating handle and a limiting piece, the first operating handle (203) is connected with the first ball screw (201), and the first limiting piece (204) is used for fixing the position of the first operating handle (203); The manual adjustment of the second ball screw (202) is controlled by an operating handle and a limiting piece, the second operating handle is connected with the second ball screw (202), and the second limiting piece is used for fixing the position of the second operating handle.
  5. 5. The dual-purpose platen for micro-assembly of claim 3 or 4, wherein the manual adjustment is adapted for eutectic soldering.
  6. 6. The dual-purpose pressure measurement platform suitable for micro assembly according to claim 1, wherein the base (1) comprises a base body (101), an ejector pin seat (102), a tray (103), a spring plate clamping piece (104) and an ejector pin (105), the ejector pin seat (102) is connected above the base body (101), the ejector pin seat (102) is connected above the ejector pin seat (103), a plurality of first through holes (1021) are formed in the ejector pin seat (102), a plurality of second through holes (1031) are formed in the tray (103), the first through holes (1021) and the second through holes (1031) are correspondingly formed, elements are placed on the tray (103), the ejector pin (105) is arranged in the first through holes (1021) and the second through holes (1031), and the spring plate clamping piece (104) is used for clamping and pressing down the elements so that the ejector pin (102) is ejected out to contact the elements.
  7. 7. The dual-purpose platen for micro-assembly according to claim 6, wherein a heating element (1032) is provided below the tray (103).
  8. 8. The dual-purpose press-testing platform suitable for micro-assembly according to claim 1, wherein the dual-purpose press-testing head (3) further comprises an outer sleeve (303), a fastening member (304), a pressure sensor (305), a first elastic member (306) and a second elastic member (307); The inner side of the outer sleeve (303) is respectively connected with the pressure welding head (301) and the fastening piece (304), the fastening piece (304) acts on the pressure welding head (301) through the first elastic piece (306), and the pressure sensor (305) is arranged between the fastening piece (304) and the first elastic piece (306); The inner side of the pressure welding head (301) is connected with the electric test head (302), the fastening piece (304) acts on the electric test head (302) through the second elastic piece (307), and the pressure sensor (305) is arranged between the fastening piece (304) and the second elastic piece (307).
  9. 9. The dual-purpose pressure measurement platform suitable for micro assembly according to claim 8, wherein the pressure sensor (305) is a film pressure sensor, the film pressure sensor is attached to the first end of the fastening piece (304) and is used for monitoring the pressure of the pressure welding head (301) and the electric test head (302), judging whether the pressure welding head (301) is a contact element or the electric test head (302) by the pattern change of the pressure cloud image of the film pressure sensor, judging the pressure magnitude and performing pressure adjustment by the pattern change of the pressure cloud image, and the thermal deformation temperature of the film pressure sensor is not less than 260 ℃.
  10. 10. The dual-purpose press-testing platform suitable for micro assembly according to claim 8 or 9, wherein triangular threads are arranged on the periphery of the outer sleeve (303) for rough positioning of the dual-purpose press-testing head (3) in the Z-axis direction of the base (1), triangular threads are arranged on the periphery of the fastening piece (304) for fine positioning of the dual-purpose press-testing head (3) in the Z-axis direction of the base (1), and the thread pitch of the outer sleeve (303) is larger than that of the fastening piece (304).

Description

Pressure measurement dual-purpose platform suitable for micro-assembly Technical Field The invention relates to the technical field of micro-assembly welding and testing platforms, in particular to a pressure testing dual-purpose platform suitable for micro-assembly. Background The welding jig/integrated welding platform in the existing micro-assembly process basically adopts a traditional mechanical pressing mode so as to complete the basic welding function. CN212526660U discloses a casing integration welding jig, through setting up supporting plate structure, synthesizing upper plate and locking mechanism, has reached the implementation of multichannel subassembly welding technology, and anchor clamps whole clamping plays the effect of location, compress tightly, guard action to each device of waiting to weld. The main disadvantages are (1) simple structure and single function. The traditional welding jig is only used for fixing products, temperature and pressure monitoring in the micro-assembly integrated welding process cannot be completed, and welding quality conditions of the products cannot be evaluated and repaired in real time. And (2) the economy is not enough and the efficiency is not high. The traditional welding jig can only be used in the product welding process, and the corresponding testing jig can only be replaced when the product flows to the testing link, so that higher economic and time cost is caused. Because of the complexity and miniaturization of components and chips in the product micro-assembly process, the process qualification can only be judged by adopting manual point location test, and the test platform in the prior process basically adopts a probe point location electrical measurement mode to diagnose the circuit abnormality. CN220584283U discloses a pin type test fixture, the cylinder rod of the test cylinder extends out, the sliding seat at the bottom of the sliding plate slides downwards along the sliding rail, and then the test plug installed on the sliding plate tests the product. The device has the main defects of (1) single structure function, poor flexibility of pin array mode, adaptation to specific test environment, and need to replace part of structure or be directly unusable along with the manufacturing (process) staged circulation of products. (2) In the aspects of reliability and accuracy, the precision and flexibility are low, the controllability is weak, the control of point location contact through a sliding rod and a pneumatic mode has randomness, the component/chip/welding spot can be damaged due to overlarge contact pressure of a probe, and the failure/distortion can be tested due to overlarge contact pressure of the probe. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art or related art. Therefore, the invention provides a pressure measurement dual-purpose platform suitable for micro assembly, which comprises: A base; The movable truss is erected on the base and can move along the X-axis direction of the base; The pressure testing dual-purpose head comprises a pressure welding head and an electric testing head, wherein the pressure testing dual-purpose head is connected with the movable truss and can move on the movable truss along the Y-axis direction of the base and the Z-axis direction of the base, the electric testing head is a thermocouple probe when being used for welding in a micro-assembly process, the pressure and the temperature in the welding process are controlled through the pressure welding head and the thermocouple probe, and the electric testing head is an electric testing probe when being used for electric testing in the micro-assembly process. Further, the movable truss moves along the X-axis direction of the base through the first ball screw, the pressure measurement dual-purpose head moves along the Y-axis direction of the base through the second ball screw, and the pressure measurement dual-purpose head moves along the Z-axis direction of the base through threaded rotation. The first ball screw is used for realizing that the movable truss moves along the X-axis direction of the base through manual adjustment or/and motor driving adjustment, the second ball screw is used for realizing that the pressure measurement dual-purpose head moves along the Y-axis direction of the base through manual adjustment or/and motor driving adjustment, and the pressure measurement dual-purpose head is used for realizing that the pressure measurement dual-purpose head moves along the Z-axis direction of the base through manual adjustment and screw rotation. Further, the manual adjustment of the first ball screw is controlled by an operating handle and a limiting piece, the first operating handle is connected with the first ball screw, and the first limiting piece is used for fixing the position of the first operating handle; the manual adjustment of the second ball screw is control