Circuit board press bonding auxiliary device

Abstract

This utility model discloses a circuit board pressing auxiliary device, including a main frame and a copper foil pressing assembly. The main frame has a mounting plate and a support plate. Multiple first lifting components are connected to the bottom surface of the mounting plate. The support plate is located below the support plate, and its top surface is a concave arc-shaped surface. The copper foil pressing assembly includes a substrate, second lifting components, a pressure plate component, a third lifting component, and a positioning component. The substrate is connected to the actuating end of the first lifting components. At least three second lifting components are connected to the bottom surface of the substrate. The second lifting components and pressure plate components correspond one-to-one. Each second lifting component has a pressure plate component mounted on its actuating end, which abuts against the middle of the arc-shaped surface. Third lifting components are connected to both ends of the bottom surface of the substrate. A positioning component of the pressure plate component is mounted on the actuating end of each third lifting component, which abuts against the end of the arc-shaped surface. At least three points of pressing are applied to the copper foil, ensuring a tight fit between the copper foil and the inner layer of the PCB.

Description

Technical Field

[0001] This utility model relates to the field of circuit board production equipment technology, and in particular to a circuit board lamination auxiliary device. Background Technology

[0002] In related technologies, multilayer circuit boards require a lamination process during circuit board production. This involves sandwiching pre-arranged PCB inner layers, polypropylene (PP), and copper foil, followed by hot pressing. The purpose of lamination is to melt the PP at high temperatures within a vacuum chamber and then, under appropriate pressure, tightly bond the PP, inner core board, and copper foil together. Existing lamination machines use single-rod pressing, which has the disadvantage of not being able to ensure a tight fit between the copper foil and the PCB inner layers during lamination. Excessive gaps between the copper foil and the PCB inner layers result in copper foil wrinkles on the circuit board surface after hot pressing, affecting quality and potentially leading to scrap, thus increasing production costs. Utility Model Content

[0003] This utility model aims to solve one of the aforementioned technical problems. To this end, this utility model proposes a circuit board lamination auxiliary device, which can effectively promote the tight adhesion of copper foil to the steel plate, eliminate copper foil wrinkles on the circuit board surface, and improve quality.

[0004] According to the present invention, a circuit board pressing auxiliary device includes a main frame and a copper foil pressing assembly. The main frame has a mounting plate and a support plate. A plurality of first lifting components are connected to the bottom surface of the mounting plate. The support plate is located below the support plate, and the top surface of the support plate is a concave arc-shaped surface. The copper foil pressing assembly includes a substrate, a second lifting component, a pressure plate component, a third lifting component, and a positioning component. The substrate is connected to the actuating end of the first lifting component. At least three second lifting components are connected to the bottom surface of the substrate. The second lifting components and the pressure plate components correspond one-to-one. Each actuating end of the second lifting component is equipped with a pressure plate component. The pressure plate component can abut against the middle of the arc-shaped surface. The bottom surfaces of the substrate are connected to both ends of the third lifting component. The actuating end of the third lifting component is equipped with a positioning component of the pressure plate component. The positioning component can abut against the end of the arc-shaped surface.

[0005] The circuit board lamination auxiliary device according to the embodiment of this utility model has at least the following beneficial effects:

[0006] After the PCB inner layer board, PP and copper foil are sandwiched together, they are placed on the curved surface of the support plate. During pressing, the first lifting component drives the mounting plate to descend to the set position, the third lifting component drives the positioning component to descend to press the two ends of the copper foil, and at least three second lifting components drive the pressure plate component to descend, providing at least three points of pressure on the copper foil, so that the copper foil is tightly attached to the PCB inner layer board, eliminating the copper foil wrinkles on the circuit board surface after hot pressing, improving product quality and reducing production costs.

[0007] According to some embodiments of the present invention, the copper foil pressing assembly has three second lifting components, which are arranged at equal intervals, wherein the pressure plate component connected to the middle second lifting component can contact the center line of the arc-shaped surface.

[0008] According to some embodiments of the present invention, the pressure plate component includes an upper plate, a lower plate, and a pressing crossbar. The upper plate is fixed to the actuating end of the third lifting component, the lower plate is connected to the upper plate, an elastic element is provided between the upper plate and the lower plate, and the pressing crossbar is fixed to the bottom surface of the lower plate.

[0009] According to some embodiments of the present invention, the elastic element is a plurality of springs, the upper plate and the lower plate are provided with slots for positioning the springs, the bottom surface of the upper plate is provided with a insertion slot, and the lower plate is provided with two insert plates that can be inserted into the insertion slot, the two insert plates clamping the plurality of springs.

[0010] According to some embodiments of this utility model, the pressing crossbar is a stainless steel round tube, and the outer wall of the stainless steel round tube is wrapped with silicone or rubber.

[0011] According to some embodiments of the present invention, all three second lifting components are cylinders, and the strokes of the three second lifting components are consistent.

[0012] According to some embodiments of the present invention, the bottom surface of the substrate is provided with a mounting frame, the mounting frame having a vertical slide rail, two inclined wedges and an adjusting bolt, the second lifting component is connected to the slide rail, both ends of the second lifting component are provided with inclined surfaces, the two inclined wedges respectively abut against one of the inclined surfaces, and the adjusting bolt is used to drive the inclined wedges to move.

[0013] According to some embodiments of the present invention, guide rails are provided at both ends of the bottom surface of the substrate, and two third lifting components are slidably connected on each guide rail, and a positioning mechanism is provided to fix the position of the third lifting components.

[0014] According to some embodiments of the present invention, the positioning mechanism includes a positioning hole and a positioning pin. The side of the guide rail is provided with a plurality of the positioning holes. The third lifting component is provided with a pin hole that matches the positioning hole. The positioning pin passes through the pin hole and one of the positioning holes.

[0015] According to some embodiments of the present invention, the positioning mechanism includes a lead screw and a driving member. The lead screw is parallel to the guide rail. The third lifting component is provided with a nut fitted onto the lead screw. The threads of the nuts of the two third lifting components are opposite. The driving member is used to drive the lead screw to rotate.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the circuit board lamination auxiliary device according to an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the pressure plate component in an embodiment of this utility model;

[0020] Figure 3 This is a cross-sectional view of the connection structure between the second lifting component and the mounting frame in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning mechanism in some embodiments of the present invention;

[0022] Figure 5 This is a structural schematic diagram of the positioning mechanism in some other embodiments of the present invention.

[0023] The attached icons are numbered as follows:

[0024] The main frame 100, mounting plate 110, support plate 120, first lifting component 130, copper foil pressing assembly 200, base plate 210, mounting bracket 211, slide rail 212, wedge block 213, adjusting bolt 214, guide rail 215, positioning hole 216, second lifting component 220, pressure plate component 230, upper plate 231, lower plate 232, pressing crossbar 233, elastic element 234, insertion slot 235, insertion plate 236, third lifting component 240, pin hole 241, positioning component 250, lead screw 260, and driving component 261. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Reference Figures 1 to 5This utility model proposes a circuit board bonding auxiliary device that enables copper foil to be tightly bonded to the inner layer of the PCB, effectively eliminating copper foil wrinkles, improving product quality, and reducing production costs.

[0030] The circuit board pressing auxiliary device includes a main frame 100 and a copper foil pressing assembly 200. The main frame 100 is the basic support structure, providing a platform for the installation and operation of components such as the copper foil pressing assembly 200. The main frame 100 is mainly composed of a mounting plate 110 and a support plate 120. The mounting plate 110 is an important component that supports the first lifting components 130, and multiple first lifting components 130 are connected to its bottom surface. The first lifting components 130 can be components with lifting functions such as hydraulic cylinders and electric push rods, and their specific models and specifications can be selected according to the overall load and lifting height requirements of the device.

[0031] The support plate 120 is located below the mounting plate 110. Its top surface is designed as a concave arc surface. After the PCB inner layer board, PP and copper foil are sandwiched together, they are placed on the arc surface of the support plate 120 to provide stable support for the subsequent pressing process. The support plate 120 can be made of steel and undergo surface treatment to improve its wear resistance and corrosion resistance.

[0032] The copper foil pressing assembly 200 is the core component of this device, responsible for pressing the copper foil tightly onto the inner layer of the PCB. The copper foil pressing assembly 200 includes a substrate 210, a second lifting component 220, a pressing plate component 230, a third lifting component 240, and a positioning component 250.

[0033] The substrate 210 is connected to the actuating end of the first lifting component 130. When the first lifting component 130 moves, the substrate 210 will rise and fall accordingly. The substrate 210 serves as the mounting base for other components of the copper foil assembly 200, and its structure should ensure sufficient stability and strength. In actual manufacturing, the substrate 210 can be made of metal sheet, such as aluminum alloy sheet, and fixedly connected to the actuating end of the first lifting component 130 by welding or bolting.

[0034] At least three second lifting components 220 are connected to the bottom surface of the substrate 210. Each second lifting component 220 corresponds one-to-one with a pressure plate component 230, meaning that each second lifting component 220 has a pressure plate component 230 mounted on its actuating end. This ensures that during the pressing process, at least three pressure plate components 230 can simultaneously apply pressure to the copper foil, providing at least three pressing points. The multiple pressing points allow for more uniform stress distribution on the copper foil during pressing. The second lifting components 220 can also be cylinders, hydraulic cylinders, or other components with lifting functions; their stroke and pressure should be appropriately selected based on the material, thickness, and pressing requirements of the copper foil.

[0035] The pressure plate component 230 can abut against the middle of the arc-shaped surface. During pressing, the pressure plate component 230 acts directly on the surface of the copper foil, transferring pressure to the copper foil so that it is tightly attached to the inner layer of the PCB.

[0036] Reference Figure 2 In some embodiments, the pressure plate component 230 includes an upper plate 231, a lower plate 232, and a pressing crossbar 233. The upper plate 231 is fixed to the actuating end of the third lifting component 240, and the lower plate 232 is connected to the upper plate 231. An elastic element 234 is provided between the upper plate 231 and the lower plate 232. The function of the elastic element 234 is to buffer and adjust the pressure during the pressing process. When the pressure plate component 230 contacts the copper foil surface, the elastic element 234 can make slight adjustments according to the unevenness of the copper foil surface, so that the pressing crossbar 233 can apply pressure evenly to the copper foil. The pressing crossbar 233 is fixed to the bottom surface of the lower plate 232 and is in direct contact with the copper foil, transmitting pressure to the copper foil.

[0037] Furthermore, the specific structure of the elastic element 234 can be varied, for example, it can be multiple springs. To ensure the stability of the springs during operation, the upper plate 231 and the lower plate 232 are provided with slots for positioning the springs. Simultaneously, the bottom surface of the upper plate 231 is provided with an insertion slot 235, and the lower plate 232 is provided with two insertion plates 236 that can be inserted into the insertion slot 235, clamping multiple springs between them. This structure not only effectively fixes the position of the springs but also ensures the connection stability between the upper plate 231 and the lower plate 232, enabling the elastic element 234 to properly perform its function of buffering and regulating pressure during operation.

[0038] In some embodiments, the material and surface treatment of the pressing crossbar 233 also affect the pressing effect. The pressing crossbar 233 can be made of stainless steel tubing. Stainless steel has high strength and corrosion resistance, ensuring that the pressing crossbar 233 will not deform or be damaged during long-term use. Furthermore, the outer wall of the stainless steel tubing is wrapped with silicone or rubber. Silicone or rubber has good elasticity and flexibility, which can further buffer the pressure during the pressing process, preventing scratches or damage to the copper foil surface. It also increases the friction between the pressing crossbar 233 and the copper foil, making the pressing more stable.

[0039] Both ends of the bottom surface of the substrate 210 are connected to third lifting components 240. A positioning component 250 of a pressure plate component 230 is installed at the actuating end of the third lifting component 240. The positioning component 250 abuts against the end of the curved surface. During pressing, the third lifting component 240 drives the positioning component 250 to descend, pressing down on both ends of the copper foil and accurately positioning it. The function of the positioning component 250 is to fix the position of the copper foil, preventing displacement during pressing and ensuring accuracy. The third lifting component 240 can also be a cylinder, electric push rod, or other lifting component, and its stroke should be sufficient to allow the positioning component 250 to descend and press down on both ends of the copper foil.

[0040] After sandwiching the PCB inner layer board, PP, and copper foil, the layers are placed on the curved surface of the support plate 120. Next, the first lifting component 130 is activated, driving the mounting plate 110 to descend to a set position, bringing the copper foil pressing assembly 200 close to the stacked product. Then, the third lifting component 240 actuates, driving the positioning component 250 to descend and press down on both ends of the copper foil, fixing its position. Finally, at least three second lifting components 220 actuate, driving the pressure plate component 230 to descend, providing at least three points of pressure on the copper foil, ensuring it adheres tightly to the PCB inner layer board. This pressing method effectively eliminates copper foil wrinkles on the circuit board surface that occur after hot pressing, improving product quality and reducing production costs.

[0041] Reference Figure 1 The copper foil pressing assembly 200 has three second lifting components 220, which are arranged at equal intervals. The middle second lifting component 220 is connected to a pressure plate component 230 that can contact the center line of the curved surface. The advantage of the equal-interval arrangement of the three second lifting components 220 is that it allows for a more uniform distribution of pressure applied to the copper foil by the pressure plate component 230 during the pressing process. During pressing, the three pressure plate components 230 act on different positions of the copper foil. The equal-interval arrangement ensures that each pressure plate component 230 bears approximately the same load, thus avoiding uneven pressing of the copper foil due to excessive or insufficient local pressure. The fact that the middle second lifting component 220 is connected to the pressure plate component 230 that can contact the center line of the curved surface allows for symmetrical pressing with the center of the curved surface as a reference, further ensuring the uniformity and stability of the pressing process.

[0042] In some embodiments, all three second lifting components 220 are cylinders, and the strokes of the three second lifting components 220 are identical. Cylinders, as a common lifting component, have advantages such as simple structure, fast response speed, and convenient control. Choosing cylinders as the second lifting components 220 meets the device's lifting function requirements and facilitates integration with the entire control system. The identical strokes of the three second lifting components 220 ensure that during the pressing process, the three pressure plate components 230 can simultaneously reach the pressing position, applying uniform pressure to the copper foil.

[0043] Reference Figure 1 and Figure 3 The bottom surface of the substrate 210 is provided with a mounting bracket 211. The mounting bracket 211 has a vertical slide rail 212, two inclined wedges 213 and an adjusting bolt 214. The second lifting component 220 is connected to the slide rail 212. Both ends of the upper part of the second lifting component 220 are provided with inclined surfaces. The two inclined wedges 213 abut against one inclined surface respectively. The adjusting bolt 214 is used to drive the inclined wedges 213 to move.

[0044] The mounting bracket 211 is designed to facilitate the installation and adjustment of the second lifting component 220. The vertical slide rail 212 ensures the stability of the second lifting component 220 during lifting, allowing it to move only vertically and preventing deviation. The second lifting component 220 is connected to the slide rail 212 via a sliding connection such as a slider, enabling smooth lifting and lowering on the slide rail 212. The inclined surfaces at both ends of the second lifting component 220 engage with two wedge blocks 213, and the adjusting bolt 214 drives the wedge blocks 213 to move. When fine-tuning the height of the second lifting component 220 is required, rotating the adjusting bolt 214 moves the wedge blocks 213 horizontally. Due to the interaction between the inclined surfaces and the wedge blocks 213, the movement of the wedge blocks 213 drives the second lifting component 220 to move vertically along the slide rail 212, thus achieving precise adjustment of the second lifting component 220's position. This installation structure not only allows for easy adjustment of the position of the second lifting component 220, but also ensures the accuracy and stability of the adjustment, meeting different pressing requirements.

[0045] Reference Figure 1 and Figure 4 The bottom surface of the substrate 210 is provided with guide rails 215 at both ends. Two third lifting components 240 are slidably connected on each guide rail 215, and a positioning mechanism is provided to fix the position of the third lifting component 240.

[0046] Guide rails 215 are provided at both ends of the bottom surface of the substrate 210, and the third lifting component 240 is slidably connected to the guide rails 215, so that the position of the third lifting component 240 can be adjusted according to actual needs. In practical applications, it may be necessary to adjust the position of the positioning component 250 according to different sizes of copper foil or different pressing requirements to better fix the two ends of the copper foil. The sliding connection allows for easy changes in the position of the third lifting component 240. At the same time, a positioning mechanism is provided to fix the position of the third lifting component 240, ensuring that the third lifting component 240 will not move during the pressing process, and ensuring that the positioning component 250 can accurately press the two ends of the copper foil.

[0047] Reference Figure 4 In some embodiments, the positioning mechanism includes positioning holes 216 and positioning pins. The side of the guide rail 215 is provided with multiple positioning holes 216. The third lifting component 240 is provided with a pin hole 241 that matches the positioning holes 216. The positioning pin passes through the pin hole 241 and one of the positioning holes 216.

[0048] Multiple positioning holes 216 on the side of the guide rail 215 provide several options for adjusting the position of the third lifting component 240. When it is necessary to adjust the position of the third lifting component 240, first slide the third lifting component 240 along the guide rail 215 to the desired position. At this time, the pin hole 241 on the third lifting component 240 will align with the corresponding positioning hole 216 on the side of the guide rail 215. Then, insert the positioning pin into the pin hole 241 and the positioning hole 216, and fix the third lifting component 240 in this position through the fixing action of the positioning pin. The positioning mechanism has a simple structure, is easy to operate, and can meet the basic requirements for fixing the position of the third lifting component 240.

[0049] Reference Figure 5 In other embodiments, the positioning mechanism includes a lead screw 260 and a drive member 261. The lead screw 260 is parallel to the guide rail 215. A third lifting member 240 is provided with a nut fitted onto the lead screw 260. The threads of the nuts on the two third lifting members 240 are opposite. The drive member 261 drives the lead screw 260 to rotate. The lead screw 260 is parallel to the guide rail 215, and the third lifting member 240 is provided with a nut fitted onto the lead screw 260. When the drive member 261 drives the lead screw 260 to rotate, because the threads of the nuts on the two third lifting members 240 are opposite, according to the lead screw 260 nut transmission principle, the two third lifting members 240 will move in opposite directions along the lead screw 260, thereby achieving position adjustment. This enables precise adjustment of the position of the third lifting member 240, and the adjustment process is smooth and reliable. The drive member 261 can be a power source such as a motor, or it can be a manually operated wheel.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A circuit board lamination auxiliary device, characterized in that, include: The main frame has a mounting plate and a support plate. The bottom surface of the mounting plate is connected to a plurality of first lifting components. The support plate is located below the support plate, and the top surface of the support plate is a concave arc surface. A copper foil pressing assembly includes a substrate, a second lifting component, a pressure plate component, a third lifting component, and a positioning component. The substrate is connected to the actuating end of the first lifting component. At least three second lifting components are connected to the bottom surface of the substrate. The second lifting components and the pressure plate components correspond one-to-one. Each actuating end of the second lifting component is equipped with a pressure plate component, which can abut against the middle of the arc-shaped surface. The bottom surface of the substrate is connected to both ends of the third lifting component. The actuating end of the third lifting component is equipped with a positioning component of the pressure plate component, which can abut against the end of the arc-shaped surface.

2. The circuit board lamination auxiliary device according to claim 1, characterized in that, The copper foil pressing assembly has three second lifting components, which are arranged at equal intervals. The pressure plate component connected to the middle second lifting component can contact the center line of the arc-shaped surface.

3. The circuit board lamination auxiliary device according to claim 2, characterized in that, The pressure plate component includes an upper plate, a lower plate, and a pressing crossbar. The upper plate is fixed to the actuating end of the third lifting component, the lower plate is connected to the upper plate, an elastic element is provided between the upper plate and the lower plate, and the pressing crossbar is fixed to the bottom surface of the lower plate.

4. The circuit board lamination auxiliary device according to claim 3, characterized in that, The elastic element is a plurality of springs. The upper plate and the lower plate are provided with slots for positioning the springs. The bottom surface of the upper plate is provided with a insertion slot. The lower plate is provided with two insert plates that can be inserted into the insertion slot. The two insert plates clamp the plurality of springs.

5. The circuit board lamination auxiliary device according to claim 3, characterized in that, The pressing crossbar is a stainless steel round tube, and the outer wall of the stainless steel round tube is wrapped with silicone or rubber.

6. The circuit board lamination auxiliary device according to claim 2, characterized in that, All three second lifting components are cylinders, and the stroke of the three second lifting components is the same.

7. The circuit board lamination auxiliary device according to claim 6, characterized in that, The bottom surface of the substrate is provided with a mounting frame, which has a vertical slide rail, two wedges and an adjusting bolt. The second lifting component is connected to the slide rail. Both ends of the second lifting component are provided with inclined surfaces. The two wedges abut against one of the inclined surfaces respectively. The adjusting bolt is used to drive the wedges to move.

8. The circuit board lamination auxiliary device according to claim 1, characterized in that, The bottom surface of the substrate is provided with guide rails at both ends, and two third lifting components are slidably connected on each guide rail. A positioning mechanism is also provided to fix the position of the third lifting components.

9. The circuit board lamination auxiliary device according to claim 8, characterized in that, The positioning mechanism includes positioning holes and positioning pins. The side of the guide rail is provided with multiple positioning holes. The third lifting component is provided with a pin hole that matches the positioning holes. The positioning pin passes through the pin hole and one of the positioning holes.

10. The circuit board lamination auxiliary device according to claim 8, characterized in that, The positioning mechanism includes a lead screw and a drive component. The lead screw is parallel to the guide rail. The third lifting component is provided with a nut fitted onto the lead screw. The threads of the nuts of the two third lifting components are opposite. The drive component is used to drive the lead screw to rotate.

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