PCB (Printed Circuit Board) bonding device

Abstract

The invention provides a PCB (Printed Circuit Board) bonding device, which relates to the technical field of PCB bonding, and comprises a platform for bearing a PCB, a rotating mechanism for driving the platform to rotate is arranged below the platform, and a moving mechanism for driving the platform to move transversely and longitudinally is arranged below the rotating mechanism; the rotating mechanism comprises a first mounting plate, a rotating driving part is arranged in the middle of the first mounting plate, supporting parts are arranged on the two sides of the rotating driving part, and a heat insulation part is arranged above the rotating driving part. The supporting part is arranged below the platform and bears heavy pressure together with the rotary driving part, the second driving part is provided with a steel plate welding part, and the bearing capacity is high; the heat insulation part is arranged for heat insulation between the platform and the rotary driving part, so that the rotary driving part is protected from being influenced by the temperature of the heating body; and the platform is provided with the adjustable adsorption part and the pressing part, so that the PCB is prevented from warping in the pressing process while being compatible with PCBs of different specifications.

Description

Technical Field

[0001] The present application relates to the technical field of PCB self-pressing bonding, and in particular to a PCB self-pressing device. Background Art

[0002] This pressing process refers to the process of pressing the PCB and the glass panel together at a certain temperature and pressure through a pressing head. The glass panel is covered with an ACF film on one side of the pressing surface. During the pressing process, the ACF film explodes and reacts and solidifies under the preset pressure and temperature, thereby making the circuit conductive.

[0003] At present, the demand for extra-large glass panels is increasing. When pressing larger glass panels, the length of the PCB is long, and the temperature and pressure required for pressing also increase accordingly. The platform has to bear greater pressing pressure and temperature. Because the platform needs to be aligned before pressing, the platform often has multi-directional movement, so the temperature of the platform is easily transmitted to the components below, resulting in a short service life of the components and easy damage. Summary of the invention

[0004] The present invention provides a PCB pressing device to solve the technical problems existing in the prior art that the pressing device cannot bear a large pressing pressure, has a short life of components, and is not compatible with PCBs of different lengths.

[0005] To solve the above problems, the technical solution adopted by the present invention is: The present invention provides a PCB pressure device, comprising a platform for carrying a PCB, a rotating mechanism and a moving mechanism, wherein the output end of the moving mechanism is connected to the platform through the rotating mechanism, driving the platform to perform lateral and longitudinal movements; the rotating mechanism drives the platform to perform rotational movement; the rotating mechanism comprises a rotating driving part, and a heat insulating part is provided between the rotating driving part and the platform; and further comprises a supporting part, which is located between the platform and the moving mechanism, and the supporting part directly transmits part or all of the pressure of the platform to the moving mechanism.

[0006] Furthermore, the heat insulation part includes a heat insulation board and a plurality of heat insulation blocks, and the heat insulation blocks are located between the heat insulation board and the platform; and a gas channel is arranged on the heat insulation board.

[0007] Furthermore, the rotary drive unit includes a rotary drive member fixed below the heat insulation board, and arc guide rails symmetrically arranged on both sides of the rotary drive member, a slider is arranged on the arc guide rail, a connecting column is fixed on the slider, and the connecting column is connected to the platform.

[0008] Furthermore, the support part includes a plurality of support columns fixedly mounted on the output end of the moving mechanism, and a cam guide is disposed on the support column, and the cam guide is in contact with the bottom surface of the platform.

[0009] Furthermore, the cam guide is connected to the support column through an adjustment assembly.

[0010] Preferably, the platform includes a platform support plate arranged on the insulation block and a pressing table fixed on the platform support plate; the platform support plate is provided with a heating part, a heat dissipation part for dissipating heat from the pressing table, an adsorption part for adsorbing the PCB and a pressing part for pressing the PCB; a plurality of support columns are provided on the output end of the moving mechanism, and a cam guide is provided on the support column, and the surface of the cam guide is in contact with the bottom surface of the platform support plate.

[0011] Furthermore, the top surface of the pressing table is the main pressing surface; the heat dissipation portion includes an air blowing pipe, and the air blowing hole of the air blowing pipe faces the main pressing surface.

[0012] Preferably, the adsorption part includes an adjusting rod and a plurality of adsorption blocks, on which a plurality of suction cups and a fixing rod for fixing the adsorption block and the pressing table, a mounting hole for installing the fixing rod, and a groove for snapping into the adjusting rod are invertedly embedded, the fixing rod passes through the mounting hole to support the pressing table, and the adsorption surface of the suction cup is in the same horizontal plane as the pressing surface; the adjusting rod is also provided with a support block for auxiliary supporting the PCB, and the upper surface of the support block is in the same horizontal plane as the pressing surface.

[0013] Furthermore, the pressing portion includes a plurality of pressing members and a cylinder driving the pressing members to move in a vertical direction, and each pressing member is respectively arranged between two adjacent support blocks.

[0014] Furthermore, the moving mechanism includes a first driving part that moves longitudinally, a second driving part that moves transversely is provided above the first driving part, the first driving part and the second driving part include a plurality of heavy-load guide rails, and a steel plate welded part is provided on the heavy-load guide rails of the second driving part.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a PCB pressing device. A supporting part is arranged under a platform to bear the pressure during pressing together with a rotating driving part. A second driving part is provided with a steel plate welding part to improve its bearing capacity and better bear the pressure during pressing. A heat insulating part is arranged to insulate the platform from the rotating driving part and protect the rotating driving part from being affected by the temperature of a heating body. An adjustable adsorption part and a pressing part are arranged on the platform to be compatible with PCBs of different specifications and prevent the PCB from warping during the pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution proposed in the present invention, it is described in detail below in combination with the embodiments and drawings. It should be understood that the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, these drawings can be changed under the concept of the present invention.

[0017] Figure 1 An assembly stereogram of an embodiment of a PCB pressing device provided by the present invention; Figure 2 An assembly perspective view of an embodiment of the platform provided by the present invention; Figure 3 for Figure 2 A partially enlarged assembly stereogram of the middle adsorption part; Figure 4 An assembly perspective view of an embodiment of the moving mechanism provided by the present invention; Figure 5 An assembly perspective view of an embodiment of the rotating mechanism provided by the present invention; 1. Rotating mechanism; 10. First mounting plate; 11. Heat insulation part; 111. Heat insulation plate; 1111. Air inlet; 1112. Exhaust port; 112. Heat insulation block; 12. Rotating drive part; 121. Rotating drive member; 122. Arc guide rail; 123. Sliding block; 124. Stop block; 125. Connecting column; 13. Support part; 131. Support column; 132. Mounting block; 133. Cam guide; 134. Adjusting block; 135. Adjusting member; 2. Platform; 2 0. Platform support plate; 21. Heat dissipation part; 211. Air blowing pipe; 22. Heating part; 221. Heating body; 222. Heat generating element; 223. Pressing platform; 23. Adsorption part; 231. Adsorption block; 232. Suction cup; 233. Adjusting rod; 234. Fixing rod; 235. Support block; 24. Pressing part; 241. Profile rack; 242. Pressing piece; 243. Cylinder; 3. Moving mechanism; 31. First driving part; 32. Second driving part; 33. Steel plate welding part. DETAILED DESCRIPTION

[0018] Please also read Figure 1 In this embodiment, a PCB pressing device includes a platform 2 for carrying a PCB, a rotating mechanism 1 for driving the platform 2 to rotate is provided below the platform 2, a moving mechanism 3 for driving the platform 2 to move horizontally and vertically is provided below the rotating mechanism 1, and a throwing mechanism for recycling unqualified PCBs is provided behind the platform 2; the rotating mechanism 1 includes a first mounting plate 10, a rotating driving part 12 is provided in the middle of the first mounting plate 10, supporting parts 13 are provided on both sides of the rotating driving part 12, and a heat insulating part 11 is provided above the rotating driving part 12.

[0019] Please also read Figure 2In this embodiment, the heating part 22 includes a heating body 221 arranged on the platform support plate 20, and a plurality of heating elements 222 are embedded in the heating body 221. The heating elements 222 can be heating tubes, thermocouples, etc.; a pressing platform 223 for pressing is provided on the heating body 221, and the pressing platform 223 includes a pressing surface, and the temperature of the pressing surface needs to reach above degrees; the heat dissipation part 21 includes a blowing pipe 211, and the blowing pipe 211 can be rotated and adjusted to the blowing hole of the blowing pipe 211 facing the pressing surface. The blowing time and blowing volume can be set according to the process conditions.

[0020] Please also read Figure 3 In this embodiment, when the pressing is performed, the manipulator places the PCB on the pressing surface of the pressing table 223, and the suction cup 232 of the adsorption part 23 adsorbs the PCB. The adsorption part 23 can be adjusted in advance for PCBs of different specifications. The adsorption block 231 can freely adjust the horizontal position on the adjustment rod 233 through the groove. One or two or more suction cups 232 can be installed on the adsorption block 231. The fixing rod 234 completely passes through the mounting hole to support the concave surface of the pressing table 223 facing the adsorption block 231, and the adsorption block 231, the adjustment rod 233 and the pressing table 223 are fixed. The adsorption surface of the suction cup 232 and the pressing surface of the pressing table 223 are on the same horizontal plane, and the fixing rod 234 can be a screw; the PCB needs to be adsorbed In order to make the PCB flat and free of warping, a plurality of support blocks 235 are arranged between the adsorption blocks 231. The upper surface of the support block 235 is at the same horizontal plane as the pressing surface to prevent sagging in the area without adsorption. Furthermore, the pressing action is performed by the pressing portion 24. After the PCB is adsorbed, the cylinder 243 drives the pressing piece 242 to move in the vertical direction, so that the pressing piece 242 presses the area without adsorption to prevent warping. The pressing piece 242 is fixed on the profile frame 241 and the lateral position of the pressing piece 242 can be adjusted. The profile frame 241 is connected to the cylinder 243. The PCB includes a pressing area, which is placed on the pressing surface of the pressing table 223. Other areas of the PCB are placed on the adsorption portion 23 without affecting the pressing action. The heat dissipation part 21 , the heating part 22 , the adsorption part 23 , and the pressing part 24 are all arranged on the platform support plate 20 . The adsorption part 23 is arranged on the heating part 22 , the heat dissipation part 21 is arranged in front of the heating part 22 , and the pressing part 24 is arranged behind the adsorption part 23 .

[0021] Please also read Figure 5In this embodiment, a rotating mechanism 1 is provided under the platform 2, and a heat insulating part 11 is provided under the platform support plate 20. The heat insulating part 11 includes a heat insulating board 111 and a plurality of heat insulating blocks 112. The heat insulating blocks 112 are provided on the four sides of the heat insulating board 111. The heat insulating blocks 112 are fixedly connected to the platform 2. The heat insulating blocks 112 are made of ceramic material and have excellent heat insulating effect. An air inlet 1111, an exhaust port 1112 for discharging hot air, and a gas channel are provided on the heat insulating board 111, so that an air flow state is formed inside the heat insulating board 111 through the gas channel, and the heat of the heat insulating board 111 is taken away by the air flow, so as to achieve heat dissipation and cooling of the heat insulating board 111, thereby preventing the temperature of the platform 2 from being conducted to the rotating mechanism 1, and affecting the service life of the rotating mechanism 1.

[0022] A rotating drive member 121 is provided below the heat insulation board 111. The rotating drive member 121 may be a DD motor, which drives the heat insulation board 111 to rotate smoothly according to the set rotation angle. Of course, during this pressing, the downward pressure generated by the pressure head can reach more than N, which will be transmitted to the rotating drive member 121 through the platform 2 and the heat insulation part 11. Such a large downward pressure can easily cause damage to the movable parts in the rotating drive member 121, reducing its service life; at the same time, it may also be necessary to realize the rotation alignment function through the rotating drive member 121 when bearing the downward pressure, which will easily make the entire rotating mechanism 1 difficult to rotate, and the normal line of sight alignment function will not be possible. To this end, in this embodiment, preferably, arc guide rails 122 are provided on the left and right sides of the rotary drive member 121, and sliders 123 are provided on the arc guide rails 122 for sliding connection. The arc guide rails 122 and the sliders 123 assist the rotary drive member 121 in performing the rotation alignment action. The arc guide rails 122 are provided with limit blocks 124 near both ends thereof. When the sliders 123 move to the limit positions on both sides, they will be released from the limit blocks 124, thereby limiting the movement of the sliders 123. Thus, the limit rotation angle of the entire rotary assembly is limited by the limit blocks 124. The sliders 123 are fixed with connecting columns 125, and the upper part of the connecting columns 125 is fixedly connected to the platform support plate 20. Thus, the pressure received on the platform support plate 20 is directly transmitted to the sliders 123 and the arc guide rails 122 through the connecting columns 125, and the pressure on the platform support plate 20 is shared while supporting the platform support plate 20, thereby reducing the pressure on the rotary drive member 121 and extending the service life of the rotary drive member 121.

[0023] Further, support parts 13 are provided on both sides of the arc guide rail 122, and the support parts 13 include a plurality of support columns 131 fixed on the first mounting plate 10, and an adjustment block 134 and a mounting block 132 are fixed on the support column 131, and the mounting block 132 is arranged above the adjustment block 134, and a cam guide 133 is fixed on the mounting block 132, and an adjustment member 135 for adjusting the contact surface between the cam guide 133 and the platform 2 is fixed on the adjustment block 134, and a waist hole and a fixing member passing through the waist hole and fixed to the support column 131 are provided on the mounting block 132, so that the surface of the cam guide 133 is in contact with the bottom surface of the platform support plate 20, the mounting block 132 can be adjusted in the vertical direction. When the surface of the cam guide 133 is just in contact with the bottom surface of the platform support plate 20, the adjusting member 135 presses against the bottom of the mounting block 132. The adjusting member 135 can adjust the height between the mounting block 132 and the adjusting block 134. The cam guide 133 contacts the platform support plate 20 and slides along the rotation direction, assisting the rotary drive member 121 to complete the rotation alignment, while sharing the pressure of the support pressure, further reducing the pressure received by the rotary drive member 121, thereby significantly extending the service life of the rotary drive member 121, significantly reducing its rotation resistance, and improving the accuracy of the rotation alignment. Of course, the number of cam guides 133 can be adaptively increased according to the pressure during the pressure.

[0024] Please also read Figure 4 In this embodiment, the moving mechanism 3 includes a first driving part 31 that moves in the longitudinal direction, and a second driving part 32 that moves in the transverse direction is arranged above the first driving part 31. The first driving part 31 and the second driving part 32 include a plurality of heavy-duty guide rails, and a steel plate welded part 33 is arranged on the heavy-duty guide rail of the second driving part 32. A first mounting plate 10 is fixed above the steel plate welded part 33 to ensure the high bearing capacity of the moving mechanism 3. It should be noted that the first driving part 31 and the second driving part 32 in this embodiment both adopt a combination of a servo motor and a screw nut pair, so that the servo motor can rotate forward or backward to drive the rotating mechanism 1 and the platform 2 to reciprocate in the transverse direction and in the longitudinal direction.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0026] The above is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A PCB pressing device, characterized in that: The invention comprises a platform (2) for carrying a PCB, a rotating mechanism (1) and a moving mechanism (3); the output end of the moving mechanism (3) is connected to the platform (2) via the rotating mechanism (1), driving the platform (2) to perform lateral and longitudinal movements; the rotating mechanism (1) drives the platform (2) to perform rotational movement; the rotating mechanism (1) comprises a rotating drive part (12), a heat insulating part (11) is provided between the rotating drive part (12) and the platform (2); and further comprises a supporting part (13), the supporting part (13) is located between the platform (2) and the moving mechanism (3), and the supporting part (13) directly transmits part or all of the pressure of the platform (2) to the moving mechanism (3).

2. The PCB pressing device according to claim 1, characterized in that: The heat insulation part (11) comprises a heat insulation board (111) and a plurality of heat insulation blocks (112); the heat insulation blocks (112) are located between the heat insulation board (111) and the platform (2); and a gas channel is provided on the heat insulation board (111).

3. The PCB pressing device according to claim 2, characterized in that: The rotary drive unit (12) comprises a rotary drive member (121) fixed below the heat insulation board (111), and arc guide rails (122) symmetrically arranged on both sides of the rotary drive member (121), a slider (123) being arranged on the arc guide rail (122), a connecting column (125) being fixed on the slider (123), and the connecting column (125) being connected to the platform (2).

4. The PCB pressing device according to claim 1, characterized in that: The support portion (13) comprises a plurality of support columns (131) fixedly mounted on the output end of the moving mechanism (3), wherein a cam guide (133) is provided on the support column (131), and the cam guide (133) is in contact with the bottom surface of the platform (2).

5. The PCB pressing device according to claim 4, characterized in that: The cam guide (133) is connected to the support column (131) via an adjustment assembly.

6. The PCB pressing device according to claim 3, characterized in that: The platform (2) comprises a platform support plate (20) arranged on the heat insulation block (112) and a pressing platform (223) fixed on the platform support plate (20); the platform support plate (20) is provided with a heating portion (22), a heat dissipation portion (21) for dissipating heat from the pressing platform (223), an adsorption portion (23) for adsorbing a PCB, and a pressing portion (24) for pressing a PCB; and a plurality of support columns (131) on the output end of the moving mechanism (3), the support columns (131) being provided with a cam guide (133), the surface of the cam guide (133) being in contact with the bottom surface of the platform support plate (20).

7. The PCB pressing device according to claim 6, characterized in that: The top surface of the pressing platform (223) is a main pressing surface; the heat dissipation portion (21) comprises an air blowing pipe (211), and the air blowing hole of the air blowing pipe (211) faces the main pressing surface.

8. The PCB pressing device according to claim 7, characterized in that: The adsorption portion (23) comprises an adjustment rod (233), a plurality of adsorption blocks (231), a plurality of suction cups (232) and a fixing rod (234) for fixing the adsorption block (231) and the pressing platform (223), a mounting hole for installing the fixing rod (234), and a groove for snapping into the adjustment rod (233), the fixing rod (234) passes through the mounting hole to support the pressing platform (223), the adsorption surface of the suction cup (232) and the pressing surface are in the same horizontal plane; the adjustment rod (233) is also provided with a support block (235) for auxiliary support of the PCB, and the upper surface of the support block (235) and the pressing surface are in the same horizontal plane.

9. The PCB pressing device according to claim 8, characterized in that: The pressing portion (24) comprises a plurality of pressing members (242) and a cylinder (243) for driving the pressing members (242) to move in a vertical direction, and each of the pressing members (242) is respectively arranged between two adjacent support blocks (235).

10. The PCB pressing device according to claim 1, characterized in that: The moving mechanism (3) comprises a first driving part (31) that moves in a longitudinal direction, a second driving part (32) that moves in a transverse direction is provided above the first driving part (31), the first driving part (31) and the second driving part (32) comprise a plurality of heavy-load guide rails, and a steel plate welded part (33) is provided on the heavy-load guide rails of the second driving part (32).

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