Device for preventing PP sheet placing error in lamination
By using automated devices such as a material bin control mechanism and a photosensitive counter in the production of multilayer PCBs, the problem of errors in PP sheet specifications and quantities caused by manual operation has been solved, enabling timely error correction and improving production efficiency, thus ensuring the quality of multilayer PCBs and customer satisfaction.
Patent Information
- Application Number
- CN202422750741.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-12
AI Technical Summary
In the existing multilayer PCB board lamination and stacking production, manually removing PP sheets and confirming their specifications and quantity is prone to errors such as taking the wrong sheet, taking too many or too few, resulting in defective products being generated and flowing out, affecting the pass rate and production efficiency, and causing order loss.
Design a device to prevent errors in placing PP sheets in the lamination and stacking process. The device uses at least two material bins, each equipped with a control mechanism including a photosensitive mechanism and a counter. It is controlled by a microcontroller to automatically identify the thickness and quantity of PP sheets, and includes an alarm and a display screen for real-time error correction.
It enables automated identification of PP sheet specifications and quantity, timely alarm and error correction, avoids the generation of defective products, improves production efficiency and the quality of multilayer PCB boards, and ensures on-time delivery of orders.
Smart Images
Figure CN223553548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB board manufacturing technology, and in particular to a device for preventing errors in the placement of PP sheets during lamination and stacking. Background Technology
[0002] As the connecting bridge between electronic components, the quality and manufacturing process of a PCB board directly affect the performance and reliability of the entire product. Lamination and stacking refers to the process in which multiple copper foil layers are stacked together with insulating materials (usually prepregs made of epoxy resin and fiberglass cloth, i.e., PP sheets) during the manufacturing of multilayer PCBs, and then bonded tightly using high temperature and pressure. This process aims to create a compact multilayer PCB with excellent electrical performance. In the lamination and stacking production of multilayer PCBs, different quantities and specifications of PP sheets need to be placed according to different product performance requirements. The existing lamination and stacking production method is done by operators, which has the following drawbacks:
[0003] (1) Manually remove the PP sheet and confirm the specifications and quantity of the PP sheet. Since the operators process hundreds or thousands of PCB boards every day, it is easy to take the wrong, too many, or too few PP sheets.
[0004] (2) Due to errors in the specifications or quantity of PP sheets, defective products are generated and leaked, resulting in product scrapping and customer complaints;
[0005] (3) Due to the serious impact of PP sheet defects on the pass rate and production efficiency of multilayer PCB boards, orders were lost.
[0006] To address the aforementioned issues, this solution proposes a device to prevent errors in the placement of PP sheets during the pressing and stacking of plates. Utility Model Content
[0007] The purpose of this invention is to solve the problem of existing lamination and stacking plate production methods, which involve manually removing PP sheets and confirming their specifications and quantities. This process is prone to errors such as taking the wrong, too many, or too few PP sheets, leading to defective products and product scrap, customer complaints, and seriously affecting the pass rate and production efficiency, resulting in lost orders.
[0008] The problem is as follows:
[0009] A device for preventing errors in the placement of PP sheets in a laminated plate includes at least two hoppers, each hopper containing a control mechanism electrically connected to a microcontroller, and an alarm electrically connected to the microcontroller. The control mechanism includes a photosensitive mechanism and a counter. Different hoppers contain PP sheets of different thicknesses, while the same hopper contains PP sheets of the same thickness.
[0010] Furthermore, the material bins include a first material bin, a second material bin, and a third material bin.
[0011] Furthermore, a first control mechanism is provided at the opening of the first material box, a second control mechanism is provided at the opening of the second material box, and a third control mechanism is provided at the opening of the third material box. The first control mechanism, the second control mechanism, and the third control mechanism are respectively electrically connected to the single-chip microcomputer.
[0012] Furthermore, the device also includes a display screen electrically connected to the microcontroller.
[0013] Furthermore, the hopper is rectangular, with an opening on the front side, and the upper and lower walls of the hopper protrude forward to form an upper edge and a lower edge.
[0014] Furthermore, the photosensitive mechanism is provided in the middle of the upper and lower edges, and the counter is provided on the right side of the upper edge.
[0015] Furthermore, the photosensitive mechanism includes a light source mounted in the upper edge and a photosensitive tube mounted in the lower edge.
[0016] Furthermore, the light source is an LED light-emitting diode.
[0017] Furthermore, the counter is an infrared sensor counter, and the alarm is an audible and visual alarm.
[0018] Furthermore, each of the aforementioned bins has the same structure, and each of the aforementioned control mechanisms has the same structure.
[0019] In summary, the technical solution of this utility model has the following beneficial effects:
[0020] This solution proposes a device to prevent errors in placing PP sheets during lamination and stacking. Each hopper opening is equipped with a photosensitive mechanism and a counter. A pre-programmed control program within a microcontroller automatically compares the transmittance value calculated from the thickness of each PP sheet removed from the hopper, based on the operator's order and quantity. This comparison with the preset value (standard value) within the microcontroller determines compliance. The total number of PP sheets removed during a complete lamination and stacking of a multilayer PCB constitutes one cycle. Each PP sheet is sequentially checked by the microcontroller in terms of order and quantity. If any PP sheet is removed incorrectly in quantity or thickness, the microcontroller automatically detects this, immediately triggering an alarm and displaying details on the screen, such as whether the quantity is too much or too little, whether the thickness specification is incorrect, and which PP sheet was removed at which point. The test results are recorded and saved in report form. Upon hearing the alarm, the operator immediately sees the error on the screen and can quickly correct it, preventing the generation of defective products and avoiding scrap. This solution features a simple and reasonable device structure, providing timely alarms and error correction. The multiple material bins, multiple photosensitive mechanisms, multiple counters, a single-chip microcomputer, a display screen, and an alarm are low-cost and easy to manufacture. The microcomputer's preset program is also simple, counting each time an infrared sensor counter detects a hand touching a PP sheet. During the removal of the PP sheet, the photosensitive mechanism immediately detects whether the light transmittance of the removed PP sheet meets the standard value and makes a process judgment. An alarm is immediately triggered if an error occurs. This eliminates the defects pointed out in the background technology, effectively preventing errors and achieving the beneficial effects of improving work efficiency, ensuring the quality of multilayer PCBs, satisfying customers, and ensuring on-time order delivery. This solution's device has good versatility; with only slight adjustments to the preset program, it can be used in the production of multilayer PCBs of various specifications for laminating and stacking PP sheets. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a block diagram of a device for preventing errors in placing PP sheets on a pressed and stacked plate according to the present invention.
[0023] Figure 2 This is a block diagram of the first control mechanism and the microcontroller of this utility model;
[0024] Figure 3This is a structural diagram of the first material box and the first control mechanism of this utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 10-Display screen, 20-Microcontroller, 30-Alarm, 40-Counter, 50-PP sheet, 60-Photosensitive mechanism, 61-Light source, 62-Phototube, 70-Upper edge, 71-Lower edge, 101-First material bin, 102-Second material bin, 103-Third material bin, 601-First control mechanism, 602-Second control mechanism, 603-Third control mechanism. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0028] like Figures 1 to 3 As shown, a device for preventing errors in the placement of PP sheets during lamination and stacking includes at least two hoppers, each containing a control mechanism electrically connected to a microcontroller 20. The device also includes an alarm 30 electrically connected to the microcontroller 20. The control mechanism includes a photosensitive mechanism 60 and a counter 40. Different hoppers contain PP sheets 50 of different thicknesses, while the same hopper contains PP sheets 50 of the same thickness. The PP sheets 50 are typically available in thicknesses of 50µm, 80µm, 100µm, and 120µm, which can be selected according to the actual requirements of the multilayer PCB board.
[0029] Specifically, the material bins include a first material bin 101, a second material bin 102, and a third material bin 103. Depending on the actual needs of the multilayer PCB board, there are several specifications of PP sheets, and therefore several material bins and control mechanisms are required. These material bins are placed on a workbench (not shown in the diagram), and the microcontroller 20, alarm 30, and the display screen 10 (mentioned later) are all mounted on the workbench.
[0030] Specifically, a first control mechanism 601 is provided near the opening of the first material bin 101, a second control mechanism 602 is provided near the opening of the second material bin 102, and a third control mechanism 603 is provided near the opening of the third material bin 103. The first control mechanism 601, the second control mechanism 602, and the third control mechanism 603 are electrically connected to the microcontroller 20. The microcontroller 20 is existing technology, and its specific specifications and working principle will not be detailed here.
[0031] Specifically, this device also includes a display screen 10 electrically connected to the microcontroller 20, used to set the quantity of PP sheets 50 used in one cycle (the total number of PP sheets removed from a multilayer PCB to complete a full lamination is one cycle), the pre-transmittance of the PP sheets 50 corresponding to each quantity sequence (that is, the transmittance used for reference standards), and parameters such as the brightness of the light source 61 and the sensitivity of the infrared sensor counter, which will be described later. It can also display real-time error information.
[0032] Specifically, the material box is rectangular, with an opening on the front side, and the upper and lower walls of the material box protrude forward to form an upper edge 70 and a lower edge 71.
[0033] Specifically, a photosensitive mechanism 60 is provided in the middle of the upper edge 70 and the lower edge 71, and a counter 40 is provided on the right side of the upper edge 70. The sensing direction of the counter 40 is downward. When the operator's right hand reaches into the material box to take PP sheet 50, a sensing signal is triggered and sent to the microcontroller 20 for counting.
[0034] Specifically, the photosensitive mechanism 60 includes a light source 61 mounted in the upper edge 70 and a photosensitive tube 62 mounted in the lower edge 71.
[0035] Specifically, the light source 61 is an LED light-emitting diode, composed of multiple LED light-emitting diodes. The phototransistor 62 is a phototransistor. The phototransistor 62 receives the light transmittance signal after the light source 61 passes through the PP sheet 50 and sends it to the microcontroller 20 for conversion and analysis.
[0036] Specifically, counter 40 is an infrared sensor counter, and alarm 30 is an audible and visual alarm.
[0037] Specifically, each hopper has the same structure, and each control mechanism has the same structure.
[0038] In summary, the technical solution of this utility model has the following beneficial effects:
[0039] This solution proposes a device to prevent errors in placing PP sheets during lamination and stacking. Each hopper opening is equipped with a photosensitive mechanism and a counter. A pre-programmed control program within a microcontroller automatically compares the transmittance value calculated from the thickness of each PP sheet removed from the hopper, based on the operator's order and quantity. This comparison with the preset value (standard value) within the microcontroller determines compliance. The total number of PP sheets removed during a complete lamination and stacking of a multilayer PCB constitutes one cycle. Each PP sheet is sequentially checked by the microcontroller in terms of order and quantity. If any PP sheet is removed incorrectly in quantity or thickness, the microcontroller automatically detects this, immediately triggering an alarm and displaying details on the screen, such as whether the quantity is too much or too little, whether the thickness specification is incorrect, and which PP sheet was removed at which point. The test results are recorded and saved in report form. Upon hearing the alarm, the operator immediately sees the error on the screen and can quickly correct it, preventing the generation of defective products and avoiding scrap. This solution features a simple and reasonable device structure, providing timely alarms and error correction. The multiple material bins, multiple photosensitive mechanisms, multiple counters, a single-chip microcomputer, a display screen, and an alarm are low-cost and easy to manufacture. The microcomputer's preset program is also simple, counting each time an infrared sensor counter detects a hand touching a PP sheet. During the removal of the PP sheet, the photosensitive mechanism immediately detects whether the light transmittance of the removed PP sheet meets the standard value and makes a process judgment. An alarm is immediately triggered if an error occurs. This eliminates the defects pointed out in the background technology, effectively preventing errors and achieving the beneficial effects of improving work efficiency, ensuring the quality of multilayer PCBs, satisfying customers, and ensuring on-time order delivery. This solution's device has good versatility; with only slight adjustments to the preset program, it can be used in the production of multilayer PCBs of various specifications for laminating and stacking PP sheets.
[0040] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.
Claims
1. A device for preventing errors in placing PP sheets in a pressed and stacked plate, characterized in that: It includes at least two material bins, each of which is equipped with a control mechanism that is electrically connected to a single-chip microcomputer. It also includes an alarm that is electrically connected to the single-chip microcomputer. The control mechanism includes a photosensitive mechanism and a counter. Different material bins contain PP sheets of different thicknesses, while the same material bin contains PP sheets of the same thickness.
2. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 1, characterized in that: The material bins include a first material bin, a second material bin, and a third material bin.
3. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 2, characterized in that: A first control mechanism is provided at the opening of the first material box, a second control mechanism is provided at the opening of the second material box, and a third control mechanism is provided at the opening of the third material box. The first control mechanism, the second control mechanism, and the third control mechanism are respectively electrically connected to the single-chip microcomputer.
4. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 1, characterized in that: The device also includes a display screen electrically connected to the microcontroller.
5. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 1, characterized in that: The hopper is rectangular, with an opening on the front side. The upper and lower walls of the hopper protrude forward to form an upper edge and a lower edge.
6. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 5, characterized in that: The photosensitive mechanism is located in the middle of the upper and lower edges, and the counter is located on the right side of the upper edge.
7. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 6, characterized in that: The photosensitive mechanism includes a light source mounted in the upper edge and a photosensitive tube mounted in the lower edge.
8. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 7, characterized in that: The light source is an LED light-emitting diode.
9. The device for preventing errors in placing PP sheets in the pressed and stacked plates according to claim 1, characterized in that: The counter is an infrared sensor counter, and the alarm is an audible and visual alarm.
10. The device for preventing errors in placing PP sheets in a pressed and stacked plate according to claim 1, characterized in that: Each of the aforementioned hoppers has the same structure, and each of the aforementioned control mechanisms has the same structure.