CN112649629A

CN112649629A - Multiple detection chip mounter

Info

Publication number: CN112649629A
Application number: CN202011519472.XA
Authority: CN
Inventors: 金长明; 沈锐; 王传东; 房烁; 王浩
Original assignee: Hefei Anxin Precision Technology Co Ltd
Current assignee: Hefei Anxin Precision Technology Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-04-13

Abstract

The invention discloses a multiple detection chip mounter which comprises a plurality of flying probe detection modules, wherein each flying probe detection module comprises a probe, a sectional type driving mechanism for driving the probe to vertically lift and a pressure sensing mechanism which is arranged at the end part of the probe and electrically connected with the sectional type driving mechanism; the pressure sensing mechanism is composed of a sleeve fixedly mounted at the end part of the probe, a silica gel gasket pasted at the lower end of the sleeve, a compression spring concentrically arranged in the sleeve and a pressure sensor assembly fixed in the sleeve and close to one end of the probe, one end of the compression spring is fixedly connected with the interior of the sleeve, and the other end of the compression spring is abutted against a contact of the pressure sensor assembly. This chip mounter detects the pressure of sleeve lower extreme to the piece that awaits measuring through the pressure sensor subassembly, turns into the signal of telecommunication with pressure signal and transmits for sectional type actuating mechanism, and drive probe through the sectional type descends, avoids the too strong or pressure too big impact to the piece that awaits measuring, causes the condition of indentation.

Description

Multiple detection chip mounter

Technical Field

The invention belongs to the technical field of chip mounting equipment, and particularly relates to a multiple detection chip mounter.

Background

In the actual use of the multiple detection chip mounter in the prior art, the flying probe detection is needed to be carried out on a PCB bare board to be mounted or a material belt to be mounted, after the flying probe detection indicates that the PCB bare board and the material belt are both correct, the chip mounter head absorbs corresponding materials according to program instructions and places the materials on the PCB bare board, the PCB after the materials are placed is judged whether flaws such as position errors exist or not through the AOI detection module, and after the components are determined to be correct, the PCB is conveyed to the next-stage reflow soldering furnace.

In the flying probe detection process, due to the fact that the flying probe driving structure is large in movement amplitude and lacks corresponding pressure control, indentation possibly occurs on a plate, product quality is damaged, and even the defective rate is increased, and accordingly improvement design is needed in a targeted mode.

Disclosure of Invention

The invention aims to provide a multiple detection chip mounter which is put into use so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a multiple detection chip mounter comprises a plurality of flying probe detection modules, wherein each flying probe detection module comprises a probe, a sectional type driving mechanism for driving the probe to vertically lift and a pressure sensing mechanism which is arranged at the end part of the probe and electrically connected with the sectional type driving mechanism;

the pressure sensing mechanism is composed of a sleeve sleeved on the end part of the probe, a silica gel gasket pasted on the lower end of the sleeve, a compression spring concentrically arranged in the sleeve and a pressure sensor assembly fixed in the sleeve and close to one end of the probe, one end of the compression spring is fixedly connected with the probe through a movable plate arranged in the sleeve in a sliding mode, and the other end of the compression spring abuts against a contact of the pressure sensor assembly.

Preferably, the sectional driving mechanism is composed of a preset driving mechanism and a fine-tuning driving mechanism fixedly mounted on a movable part of the preset driving mechanism, and power parts of the preset driving mechanism and the preset driving mechanism are electrically connected with the pressure sensor assembly.

Preferably, the preset driving mechanism is an electric push rod or an electric slide rail.

Preferably, the fine adjustment driving mechanism is composed of a supporting plate, a servo motor and a shell which are fixedly arranged on the supporting plate, and a nut piece which is rotatably arranged in the shell and is in transmission connection with the servo motor through a gear, wherein an external thread is arranged on the outer wall of the upper part of the probe and is inserted into the nut piece to be in threaded connection with the nut piece, and a limiting structure for limiting the deflection of the probe is arranged between the probe and the fixing sleeve.

Preferably, the limiting structure is composed of a prismatic hole arranged on the thick part of the upper end of the probe and a prismatic rod fixedly arranged at one end of the inner wall of the shell and inserted into the prismatic hole.

The invention has the technical effects and advantages that: this multiple detection chip mounter detects the pressure of sleeve lower extreme to the piece that awaits measuring through the pressure sensor subassembly, turns into the signal of telecommunication with pressure signal and gives sectional type actuating mechanism, and drive probe through the sectional type descends, avoids the too strong or too big pressure of impact to the piece that awaits measuring, causes the condition of indentation, guarantees product quality, reduces the defective percentage, and the practicality is stronger.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a pressure sensing mechanism;

fig. 3 is a schematic structural diagram of the limiting structure.

In the figure: 1. a flying probe detection module; 11. a probe; 12. a segmented drive mechanism; 13. a pressure sensing mechanism;

121. presetting a driving mechanism; 122. fine-tuning the driving mechanism;

1221. a support plate; 1222. a servo motor; 1223. a housing; 1224. a nut member;

131. a sleeve; 132. a silica gel gasket; 133. a compression spring; 134. a pressure sensor assembly;

2. a limiting structure; 21. a prismatic hole; 22. a prismatic pole;

3. a movable plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a multiple detection chip mounter as shown in fig. 1-3, which comprises a plurality of flying probe detection modules 1, wherein each flying probe detection module 1 comprises a probe 11, a sectional type driving mechanism 12 for driving the probe 11 to vertically lift, and a pressure sensing mechanism 13 which is arranged at the end part of the probe 11 and is electrically connected with the sectional type driving mechanism 12;

the pressure sensing mechanism 13 is composed of a sleeve 131 sleeved on the end of the probe 11, a silicone gasket 132 adhered to the lower end of the sleeve 131, a compression spring 133 concentrically arranged in the sleeve 131, and a pressure sensor assembly 134 fixed in the sleeve 131 and close to one end of the probe 11, wherein one end of the compression spring 133 is fixedly connected with the probe 11 through a movable plate slidably arranged in the sleeve 131, and the other end of the compression spring abuts against a contact of the pressure sensor assembly 134.

The sectional driving mechanism 12 is composed of a preset driving mechanism 121 and a fine-tuning driving mechanism 122 fixedly mounted on a movable portion of the preset driving mechanism 121, and the power portions of the preset driving mechanism 121 and the preset driving mechanism 121 are electrically connected to the pressure sensor assembly 134.

The fine adjustment driving mechanism 122 is composed of a supporting plate 1221, a servo motor 1222 and a housing 1223 fixedly arranged on the supporting plate 1221, and a nut 1224 rotatably mounted in the housing 1223 and in transmission connection with the servo motor 1222 through a gear, wherein an external thread is arranged on an outer wall of an upper portion of the probe 11, the probe is inserted into the nut 1224 and in threaded connection with the nut 1224, and a limiting structure 2 for limiting deflection of the probe 11 is arranged between the probe 11 and the fixing sleeve 131.

Flying probe testing process, probe 11 moves to wait to detect a back of examining the top, it promotes probe 11 and descends fast to treat the preset actuating mechanism 121 of sectional type actuating mechanism 12, thereby make sleeve 131 of probe 11 lower extreme support and press to the piece that awaits measuring, can avoid treating the detection piece through the silica gel pad and cause the damage, fly leaf 3 slides from top to bottom in sleeve 131 this moment, promote compression spring 133 one end motion, compression spring 133 receives the compression, produce the restoring force and support and press pressure sensor subassembly 134 and produce the signal of telecommunication, strengthen simultaneously along with the increase output signal of telecommunication of pressure, in the interval is set for to increase in the output signal of telecommunication, preset actuating mechanism 121 holds and drives probe 11 and descend. When an electric signal is received and reaches a set node value, the fine adjustment driving mechanism 122 is started, the servo motor 1222 drives the nut member 1224 to rotate, the probe 11 inserted into the nut member 1224 moves towards the outside of the housing 1223 through threaded fit, the rotation speed of the servo motor 1222 is adjusted, so that the probe 11 slowly extends to continuously push the compression spring to shorten, and when the compression spring 133 is compressed to a set length, the probe 11 just touches a contact of a to-be-detected member to detect, and meanwhile, the restoring force of the compression spring 133 reaches a set value for an electric signal generated by the pressure of the pressure sensor assembly 134, at this time, the fine adjustment driving mechanism 122 stops, so that the probe 11 is ensured to quickly move to a certain position first, and finally, the probe 11 relatively slowly touches the contact of the to-be-detected member to detect, so that impact on the to-be-detected, avoid appearing the indentation, guarantee product quality, reduce the defective percentage, the practicality is stronger.

The preset driving mechanism 121 is an electric push rod or an electric slide rail.

The limiting structure 2 is composed of a prismatic hole 21 arranged at the thick part of the upper end of the probe 11 and a prismatic rod 22 fixedly arranged on the inner wall of the shell 1223, and one end of the prismatic rod is inserted into the prismatic hole 21. Deflection of probe 11 during axial movement inside nut member 1224 is avoided, thereby facilitating connection and conduction of probe 11.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a multiple detection chip mounter, includes a plurality of flying probe detection module (1), its characterized in that: the flying probe detection module (1) comprises a probe (11), a sectional type driving mechanism (12) for driving the probe (11) to vertically lift and a pressure sensing mechanism (13) which is arranged at the end part of the probe (11) and electrically connected with the sectional type driving mechanism (12);

the pressure sensing mechanism (13) is composed of a sleeve (131) sleeved on the end part of the probe (11), a silica gel gasket (132) adhered to the lower end of the sleeve (131), a compression spring (133) concentrically arranged in the sleeve (131) and a pressure sensor assembly (134) fixed in the sleeve (131) and close to one end of the probe (11), one end of the compression spring (133) is fixedly connected with the probe (11) through a movable plate (3) arranged in the sleeve (131) in a sliding mode, and the other end of the compression spring abuts against a contact of the pressure sensor assembly (134).

2. The multiple-detection chip mounter according to claim 1, wherein: the sectional type driving mechanism (12) is composed of a preset driving mechanism (121) and a fine adjustment driving mechanism (122) fixedly arranged on a movable part of the preset driving mechanism (121), and power parts of the preset driving mechanism (121) and the preset driving mechanism (121) are electrically connected with a pressure sensor assembly (134).

3. The multiple-detection chip mounter according to claim 2, wherein: the preset driving mechanism (121) is an electric push rod or an electric slide rail.

4. The multiple-detection chip mounter according to claim 2, wherein: the fine adjustment driving mechanism (122) is composed of a supporting plate (1221), a servo motor (1222) and a shell (1223) which are fixedly arranged on the supporting plate (1221), and a nut piece (1224) which is rotatably arranged in the shell (1223) and is in transmission connection with the servo motor (1222) through a gear, wherein an external thread is arranged on the outer wall of the upper portion of the probe (11), the nut piece (1224) is inserted into the nut piece and is in threaded connection with the nut piece, and a limiting structure (2) used for limiting deflection of the probe (11) is arranged between the probe (11) and the fixing sleeve (131).

5. The multiple-detection chip mounter according to claim 4, wherein: the limiting structure (2) is composed of a prismatic hole (21) formed in the thick portion of the upper end of the probe (11) and a prismatic rod (22) fixedly installed on one end of the inner wall of the shell (1223) and inserted into the prismatic hole (21).