Pressure monitoring system and monitoring press

Abstract

The utility model provides a pressure monitoring system and a monitoring press machine, which relate to the field of electronic device packaging technology and comprise a pressure sensor arranged above a press machine pressure head of the press machine, a laser displacement sensor arranged above a press machine pressure rod, an information acquisition module and a code scanning gun, the pressure sensor, the laser displacement sensor and the code scanning gun are all connected with the information acquisition module, the information acquisition module is connected with the computer host, and the computer host is connected with the display. The press is responsible for providing pressure, the pressure sensor is responsible for detecting pressure, the laser displacement sensor is responsible for monitoring movement displacement of a press head of the press, the information acquisition module uploads acquired pressure values and displacement values to the computer host, and data are processed by an upper computer program and converted into a coordinate curve graph of pressure changing along with displacement. The upper computer can also send out signals through the computer host, and instantaneous values of pressure and displacement are read in real time. The system has the performance characteristics of real-time monitoring, data processing, chart analysis, data reverse tracing and the like.

Description

Technical Field

[0001] The utility model relates to the field of electronic device packaging technology, in particular to a pressure monitoring system and a monitoring press for pressure monitoring and data reverse tracing and analysis in the optical device assembly process. Background Art

[0002] In the field of optoelectronic device packaging, there are press-fitting processes in the process links such as core assembly and BOSA device assembly. At present, based on factors such as cost and order volume, most packaging factories use manual presses or semi-automatic pneumatic presses. For example, the utility model with application number 201922057750.3 discloses a double-column manual press, including a base, a fuselage, an upper die, and a lower die installed on the top of the base. The top of the base is provided with a plurality of holes arranged in a matrix along the vertical direction, and a plurality of support rods are inserted into the plurality of holes at intervals. The top of the support rod is at the same height as the top wall of the lower die. A slot is provided on the vertical side wall of the part where the support rod is inserted into the inner part of the hole. A plug rod matching the slot is provided in the base for sliding along the depth direction of the slot, and a driving member for driving the plug rod to slide is provided on the base. However, the pressure control of this type of equipment is unstable, and there are overshoot or insufficient pressure phenomena, which may cause product defects. In addition, these devices cannot record pressure data and correspond to products one by one, and there is no way to reversely trace defective products and analyze data causes.

[0003] In the process of optoelectronic device packaging, unstable pressure and inadequate press-fitting in the press-fitting process will lead to press-fitting failure, and the data is difficult to trace. The main reason for press-fitting failure is the fluctuation of dimensional tolerance and form and position tolerance of raw materials. These defects lead to large deviations in pressure values. In order to avoid such failures, a new pressure detection system needs to be established. Utility Model Content

[0004] The utility model provides a pressure monitoring system and a monitoring press, aiming to solve the problems of unstable pressure and inadequate press-fitting in the press-fitting process during the packaging of optoelectronic devices.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A pressure monitoring system includes a pressure sensor arranged above the press head of a press, a laser displacement sensor arranged above the press rod, and an information acquisition module arranged above the side of the press. The pressure sensor and the laser displacement sensor are both connected to the information acquisition module, the information acquisition module is connected to a computer host, and the computer host is connected to a display.

[0007] Preferably, the pressure monitoring system further comprises a barcode scanner, which is connected to the information acquisition module.

[0008] A monitoring press for the pressure monitoring system includes a press, a pressure sensor is provided above the press head of the press, an information acquisition module is provided above the side of the press, a laser displacement sensor is provided above the press rod, the pressure sensor and the laser displacement sensor are both connected to the information acquisition module, and a press-fitting fixture is provided below the press head of the press.

[0009] Preferably, the press-fit clamp comprises a press-fit clamp slider and a press-fit clamp base. The press-fit clamp base is provided with a slide groove matching the size of the press-fit clamp slider. The press-fit clamp slider can slide in the slide groove of the press-fit clamp base. Magnets are embedded in the front and rear side surfaces of the press-fit clamp base. The front and rear end surfaces of the press-fit clamp slider are respectively fixedly connected to limiting blocks.

[0010] Preferably, the press-fit fixture base is also provided with a guide hole for placing the press-fit portion of the electronic component to be press-fitted.

[0011] Preferably, the press-fit fixture slider is provided with two grooves for placing the substrate of the electronic component to be press-fitted.

[0012] Preferably, the size of the groove matches the size of the substrate of the electronic device to be press-fitted.

[0013] Preferably, the press-fit fixture base and the press-fit fixture slider are both made of stainless steel SUS430.

[0014] Preferably, the number of monitoring presses is more than one, and all monitoring presses are connected to a computer host; when the number of monitoring presses is ≥2, the monitoring presses are connected in series or in parallel.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model can read and display the change value of pressure and displacement in real time through the display.

[0017] 2. The utility model collects multi-point pressure values ​​and can display the relationship between pressure, time and displacement in the form of a graph curve after the upper computer analyzes and processes the data.

[0018] 3. The utility model realizes parallel monitoring of multiple monitoring presses by introducing more than one monitoring press and allocating different addresses to the information acquisition modules installed on the monitoring presses by the host computer.

[0019] 4. The utility model can effectively trace and analyze by matching monitoring data with products one by one.

[0020] 5. Through a large amount of data analysis, the utility model can try to establish a data model, find the relationship between press-fit failure and pressure, and establish a press-fit curve quality judgment model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the utility model.

[0023] Figure 2 This is a diagram of a press-fit fixture of the present utility model.

[0024] Figure 3 This is a flow chart of the information transmission principle of the utility model.

[0025] Figure 4 The utility model is a curve diagram showing the relationship between pressure, time and displacement during the press-fitting process.

[0026] Figure 5 It is a pressure monitoring curve diagram from the starting pressure to the peak pressure of the utility model.

[0027] In the figure, 1-press, 2-press head, 3-pressure sensor, 4-barcode scanner, 5-information acquisition module, 6-laser displacement sensor, 7-computer host, 8-display, 9-press-fit part of the electronic device to be press-fitted, 10-substrate of the electronic device to be press-fitted, 11-press-fit fixture slider, 12-press-fit fixture base, 13-magnet, 14-guide hole, 15-limit block, 16-groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] A pressure monitoring system, such as Figure 1As shown, it includes a pressure sensor 3 arranged above the press head 2 of the press 1, a laser displacement sensor 6 arranged above the pressure rod of the press 1, and an information acquisition module 5 arranged above the side of the press 1. The pressure sensor 3 and the laser displacement sensor 6 are both connected to the information acquisition module 5, the information acquisition module 5 is connected to a computer host 7, and the computer host 7 is connected to a display 8.

[0031] The pressure monitoring system further includes a barcode scanning gun 4 , which is connected to the information acquisition module 5 .

[0032] Specifically, the pressure sensor 3 is connected to the wiring terminal of the information acquisition module 5 through a signal line, the barcode scanning gun 4 is connected to the information acquisition module 5 through the USB interface of the information acquisition module 5, the laser displacement sensor 6 is connected to the wiring terminal of the information acquisition module 5, and the computer host 7 is connected to the wiring terminal of the information acquisition module 5 through a coaxial cable.

[0033] Furthermore, the press 1 is used to provide pressure, the pressure sensor 3 is used to detect pressure, the barcode scanner 4 is used to read the material barcode or QR code and transmit it to the information acquisition module 5, and the laser displacement sensor 6 is used to monitor the moving distance of the press 1. The information acquisition module 5 has the functions of receiving the pressure value collected by the pressure sensor 3, detecting the collected displacement value by the laser displacement sensor 6, and driving and reading the barcode information of the barcode scanner 4. The information acquisition module 5 transmits the collected pressure value, displacement value and scanning information to the computer host 7 via a coaxial cable.

[0034] Example 2

[0035] A monitoring press for the pressure monitoring system includes a press 1, a pressure sensor 3 is provided above the press head 2 of the press 1, an information acquisition module 5 is provided above the side of the press 1, a laser displacement sensor 6 is provided above the pressure rod of the press 1, the pressure sensor 3 and the laser displacement sensor 6 are both connected to the information acquisition module 5, and a press-fitting fixture is provided below the press head 2 of the press 1.

[0036] Furthermore, if Figure 2As shown, the press-fitting fixture is used for positioning and guiding the press-fitting materials and assisting the stability of the press-fitting process. The press-fitting fixture includes a press-fitting fixture slider 11 and a press-fitting fixture base 12. The press-fitting fixture base 12 is provided with a slide groove that matches the size of the press-fitting fixture slider 11. The press-fitting fixture slider 11 can slide in the slide groove of the press-fitting fixture base 12. The front and rear end surfaces of the press-fitting fixture slider 11 are respectively provided with limit blocks 15. The press-fitting fixture slider 11 and the limit blocks 15 are fixed with screws. Magnets 13 are embedded in the front and rear side surfaces of the press-fitting fixture base 12, and the fixing method is glue bonding. The press-fitting fixture slider 11 is provided with two grooves 16 for placing the electronic device substrate 10 to be press-fitted, and the press-fitting fixture base 12 is also provided with a guide hole 14 for placing the press-fitting part 9 of the electronic device to be press-fitted.

[0037] Furthermore, the limit block 15 is used to limit the movement stroke of the press-fit fixture slider 11. When the press-fit fixture slider 11 moves to the end face, the magnet 13 relies on magnetic force to adsorb the limit block 15 and tightly adhere to the end face of the press-fit fixture base 12 to ensure that the groove 16 on the press-fit fixture slider 11 is located directly below the guide hole 14 of the press-fit fixture base 12. Two grooves 16 are set on the press-fit fixture slider 11 to facilitate the placement of materials. After the electronic device substrate 10 to be press-fitted is placed in one of the protruding grooves 16, the press-fit fixture slider 11 is pushed to move to the other end, and the electronic device substrate 10 to be press-fitted is just located directly below the guide hole 14 of the press-fit fixture base 12.

[0038] Furthermore, the press-fit fixture base 12 and the press-fit fixture slider 11 are made of stainless steel SUS430 with good wear resistance and magnetic conductivity, so that the press-fit fixture base 12 and the press-fit fixture slider 11 have a longer service life. The size of the groove 16 matches the size of the electronic device substrate 10 to be press-fitted, and the size of the guide hole 14 matches the size of the press-fit portion 9 of the electronic device to be press-fitted. The size of the magnet 13 is φ6x3.

[0039] The number of the monitoring presses is more than one, and the monitoring presses are all connected to the computer host 7; when the number of the monitoring presses is ≥2, the monitoring presses are connected in series or in parallel.

[0040] Furthermore, if Figure 3 As shown, a computer host 7 can assign unique address codes to different information acquisition modules 5, and all information acquisition modules 5 are connected to the computer host 7 in parallel. The computer host 7 identifies and manages each information acquisition module 5 according to the assigned address code, thereby realizing centralized control and data acquisition of multiple monitoring presses by one computer host 7.

[0041] The principle of the utility model is as follows: pressure is provided by a press machine 1; pressure detection is performed by a pressure sensor 3 arranged above the pressure head of the press machine 1, and the pressure sensor 3 transmits the pressure data to an information acquisition module 5; a laser displacement sensor 6 arranged above the guide rod of the press machine monitors the displacement change of the press machine 1 during the pressing process, and the laser displacement sensor 6 also transmits the collected displacement information to the information acquisition module 5; the information acquisition module 5 uploads the collected pressure and displacement data to a computer host 7, and the upper computer program processes the data to form an intuitive and easy-to-analyze chart, such as Figure 4 As shown, a standard curve of the load pressure versus the press-in displacement in a press-fitting cycle is recorded. The host computer can also send instructions such as controlling the pressure collection point and the collection frequency to the information acquisition module 5 through the computer host 7, thereby realizing information interaction. In addition, in order to correspond the collected data with the product material, a barcode scanner 4 for reading the material barcode or QR code is equipped. The barcode scanner 4 transmits the barcode reading information to the computer host 7 through the information acquisition module 5. The host computer corresponds the barcode reading information with the pressure data, and after processing, a chart is formed and displayed on the display 8, so that the data can correspond one-to-one with the product, and the data can be traced. Coaxial cable is used for transmission between the information acquisition module 5 and the computer host 7. The coaxial cable has strong anti-interference ability and can transmit a variety of signals, which speeds up the transmission efficiency and equipment utilization.

[0042] After analyzing a large amount of data and charts, we can try to establish a data model to find the relationship between product press-fit failure and pressure, so as to better serve product quality. Figure 5 As shown, the upper and lower pressure limits can be set in a certain monitoring area through the host computer program. If the limit area is exceeded, it is considered as abnormal pressure fitting, and the product is at risk of failure. The relevant information is uploaded to the computer host 7. In summary, the pressure monitoring system of the present invention has the performance characteristics of real-time monitoring, one-to-one correspondence between data charts and physical objects, reverse traceability of data, and one-to-many.

[0043] The method of using the utility model is:

[0044] S1. Use a barcode scanner 4 to scan the QR code or barcode on the electronic device substrate 10 to be press-assembled.

[0045] S2. Place the electronic device substrate 10 to be press-fitted into the groove 16 extending from the press-fitting fixture slider 11, push the press-fitting fixture slider 11 to move to the other end, place the press-fitting part 9 of the electronic device to be press-fitted into the guide hole 14 of the press-fitting fixture base 12, operate the press machine 1 for press-fitting, and the pressure sensor 3 and the laser displacement sensor 6 automatically collect the pressure value and the displacement value, and upload them to the computer host 7.

[0046] S3. After the press-fitting operation of the operating press machine 1 is completed, the press-fitting fixture slider 11 is pushed to move to the other side, and the press-fitted electronic components are taken out, and the press-fitting is completed.

[0047] S4. The host computer 7 runs the upper computer program to match and process the scanned code information and pressure collection values ​​and displacement collection values ​​of different presses and different product materials, and output charts and curve information according to the established template.

[0048] S5. Conduct data traceability for defective products in the press-fitting process, analyze pressure changes and raw material dimensions, shape and position tolerances and other factors based on data, charts, and curve information, identify problem points, and improve corresponding processes to better control quality.

[0049] S6. When a certain amount of data is recorded, analyzing a large amount of data and graphics can more accurately find the law of the influence of pressure, raw material size, shape and position tolerance on product press-fit quality, and establish a more reasonable press-fit process.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure monitoring system, characterized in that: The invention comprises a pressure sensor (3) arranged above a press head (2) of a press machine (1), a laser displacement sensor (6) arranged above a pressure rod of the press machine (1), and an information acquisition module (5) arranged above a side of the press machine (1); the pressure sensor (3) and the laser displacement sensor (6) are both connected to the information acquisition module (5); the information acquisition module (5) is connected to a computer host (7); and the computer host (7) is connected to a display (8).

2. The pressure monitoring system according to claim 1, characterized in that: The pressure monitoring system further comprises a barcode scanning gun (4), which is connected to the information acquisition module (5).

3. A monitoring press for use in a pressure monitoring system as claimed in claim 1 or 2, comprising a press (1), characterized in that: A pressure sensor (3) is provided above the press head (2) of the press machine (1), an information acquisition module (5) is provided above the side of the press machine (1), a laser displacement sensor (6) is provided above the pressure rod of the press machine (1), the pressure sensor (3) and the laser displacement sensor (6) are both connected to the information acquisition module (5), and a press-fitting fixture is provided below the press head (2) of the press machine (1).

4. The monitoring press according to claim 3, characterized in that The press-fit fixture comprises a press-fit fixture slider (11) and a press-fit fixture base (12); the press-fit fixture base (12) is provided with a slide groove matching the size of the press-fit fixture slider (11); the press-fit fixture slider (11) can slide in the slide groove of the press-fit fixture base (12); magnets (13) are embedded in the front and rear side surfaces of the press-fit fixture base (12); and the front and rear end surfaces of the press-fit fixture slider (11) are respectively fixedly connected to limit blocks (15).

5. The monitoring press according to claim 4, characterized in that The press-fitting fixture base (12) is also provided with a guide hole (14) for accommodating the press-fitting portion (9) of the electronic device to be press-fitted.

6. The monitoring press according to claim 5, characterized in that The press-fitting fixture slider (11) is provided with two grooves (16) for accommodating the electronic device substrate (10) to be press-fitted.

7. The monitoring press according to claim 6, characterized in that The size of the groove (16) matches the size of the electronic device substrate (10) to be pressed.

8. The monitoring press according to claim 7, characterized in that The size of the guide hole (14) matches the size of the press-fit portion (9) of the electronic component to be press-fitted.

9. The monitoring press according to claim 4 or 8, characterized in that The press-fit fixture base (12) and the press-fit fixture slider (11) are both made of stainless steel SUS430.

10. The monitoring press according to claim 9, characterized in that The number of monitoring presses is more than one, and the monitoring presses are all connected to a computer host (7); when the number of monitoring presses is ≥2, the monitoring presses are connected in series or in parallel.

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