Multi-layer circuit board pressing device

Abstract

The utility model relates to the technical field of circuit board manufacturing, in particular to a multilayer circuit board pressing device, which comprises a workbench, a pressing mechanism and a smoothing mechanism, a sinking groove is arranged in the workbench, a pressed plate is arranged in the sinking groove, a pneumatic push rod is arranged at the bottom of the workbench, and a movable end of the pneumatic push rod extends into the sinking groove and is fixed with the pressed plate; the pressing mechanism comprises a supporting frame fixed to the workbench, a first electric push rod and a pressing plate, the first electric push rod is fixed to the supporting frame, and the output end of the first electric push rod faces the pressed plate and is fixed to the pressing plate; and the smoothing mechanism comprises a smoothing rod, a threaded rod and a motor, sliding grooves allowing the smoothing rod to slide are formed in the two sides of the opening of the sinking groove, the threaded rod is located in the sliding grooves and rotationally connected with the sliding grooves, the threaded rod is in threaded connection with the smoothing rod, and the motor drives the threaded rod to rotate. The multi-layer material flattening device solves the problems that in the prior art, multiple layers of materials need to be flattened manually, the flattening effect is poor, and certain potential safety hazards exist.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board manufacturing, in particular to a multi-layer circuit board pressing device. Background Art

[0002] A multilayer circuit board is usually composed of multiple layers of substrate (usually glass fiber reinforced epoxy resin) and conductive layers, and the conductive layers are separated by insulating layers. In order to press these layers together to form an integral circuit board, however, the existing pressing devices are generally not convenient for pressing the sides of the circuit board, and the circuit board is easily misaligned during the pressing process.

[0003] Based on the above problems, the existing patent with publication number CN219938649U discloses a multi-layer circuit board pressing device, which facilitates the pressing of multi-layer circuit boards by setting a main pressing plate and two auxiliary pressing plates, and adjusts the positions of the two auxiliary pressing plates by setting an adjustment component, thereby facilitating the pressing of the sides of circuit boards of different sizes and improving the pressing quality of the circuit boards.

[0004] However, when implementing the above-mentioned multi-layer circuit board pressing device, it was found that it still has at least the following problems: multi-layer materials generally have thinner copper foil layers and insulating layers, and when the multi-layer materials are pressed, if a small gap appears between the copper foil layer and / or the insulating layer and the underlying structure, bubbles will appear between the copper foil layer and / or the insulating layer and the underlying structure after the pressing is completed, affecting the pressing effect. Therefore, it is often necessary to manually stroke the copper foil layer and / or the insulating layer to make the copper foil layer and / or the insulating layer fit tightly with the underlying structure to prevent the occurrence of bubbles. However, the manual smoothing method has certain safety hazards, and it is difficult to completely smooth it out, and small bubbles are still prone to appear. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a multi-layer circuit board pressing device, which can automatically reduce the gap between the multi-layer materials and prevent the occurrence of bubbles and bulging, so as to solve the problem that the prior art requires manual smoothing of the multi-layer materials, the smoothing effect is poor, and there are certain safety hazards.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides a multi-layer circuit board pressing device, including: a workbench, a pressing mechanism and a smoothing mechanism, wherein the workbench is provided with a sinking groove, a pressure plate is provided in the sinking groove, a pneumatic push rod is provided at the bottom of the workbench, and the movable end of the pneumatic push rod extends into the sinking groove and is fixed to the pressure plate; the pressing mechanism includes a support frame fixed on the workbench, an electric push rod and a pressing plate, the electric push rod is fixed on the support frame, and its output end faces the pressure plate and is fixed to the pressing plate; the smoothing mechanism includes a smoothing rod, a threaded rod, and a motor, sliding grooves for sliding of the smoothing rod are provided on both sides of the opening of the sinking groove, the threaded rod is located in the sliding groove and is rotatably connected to the sliding groove, the threaded rod is threadedly connected to the smoothing rod, and the motor drives the threaded rod to rotate.

[0009] Optionally, an L-shaped clamping member is also included, which is located between the pressure plate and the sinking groove. A second electric push rod is fixed on the workbench, and the second electric push rod can push the clamping member to move toward the pressure plate.

[0010] Optionally, a plurality of limiting rods are provided between the abutting piece and the sinking groove, and sliding holes for the limiting rods to slide are provided in the sinking groove, and the limiting rods are fixed to the abutting piece.

[0011] Optionally, a fitting groove matched with the smoothing rod is provided on the side of the sinking groove facing the motor.

[0012] Optionally, the smoothing rod includes a fixing rod and a contact head. The fixing rod is fixed to the motor. A connecting opening for the contact head to be plugged in is provided in the fixing rod. The contact head can be fixed in the connecting opening by bolts.

[0013] Optionally, the contact head is wrapped with a flexible layer.

[0014] Optionally, the side of the contact head facing the motor is arc-shaped.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a multi-layer circuit board pressing device, which has the following beneficial effects:

[0017] 1. The utility model pushes the pressure plate through the pneumatic push rod, so that the multi-layer material on the pressure plate is against the smoothing rod, and the motor rotates the threaded rod, thereby driving the smoothing rod to smooth the multi-layer material, so that the multi-layer material is closely fitted, and the gap between the multi-layer material is reduced, so that the problem of bubble bulging occurs after the pressing is completed. After the smoothing is completed, the pneumatic push rod is retracted to make the pressure plate against the workbench, and then the electric push rod pushes the pressing plate against the pressure plate for pressing. This structure solves the problem that the traditional technology needs to manually smooth the multi-layer material, the smoothing effect is not good, and there are certain safety hazards;

[0018] 2. The utility model uses the electric push rod to push the clamping member toward the pressure plate. When the pneumatic push rod pushes the pressure plate upward, the clamping member and the pressure plate clamp part of the multi-layer material. In the subsequent process of the smoothing rod smoothing the multi-layer material, the smoothing rod will not drive the material on the top layer to move, thereby increasing the flatness of the subsequent pressing;

[0019] 3. The utility model connects the smoothing rod to the fixing rod and the contact head. When disassembling or assembling, the bolt can be twisted to separate the contact head from the fixing rod, and the contact head can be quickly taken out and replaced, thereby reducing costs and facilitating disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 Shows Figure 1 A front view structural diagram of

[0022] Figure 3 A partial structural schematic diagram is shown;

[0023] Figure 4 Shows Figure 3 A side view schematic diagram of the structure;

[0024] Figure 5 Shows a schematic diagram of the structure of the workbench;

[0025] Figure 6 A schematic cross-sectional structure diagram of the pressing plate is shown.

[0026] In the figure: 1. workbench; 2. sinking groove; 3. pressure plate; 4. pneumatic push rod; 5. support frame; 6. electric push rod 1; 7. pressing plate; 8. smoothing rod; 81. fixing rod; 82. contact head; 9. threaded rod; 10. motor; 11. sliding groove; 12. fastening piece; 13. electric push rod 2; 14. limiting rod; 15. sliding hole; 16. fitting groove; 17. connecting opening; 18. flexible layer. DETAILED DESCRIPTION

[0027] 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.

[0028] Example: See Figures 1 to 6According to an embodiment of the utility model, a technical solution is provided: a multi-layer circuit board pressing device, comprising: a workbench 1, a pressing mechanism and a smoothing mechanism, wherein the workbench 1 is provided with a sinking groove 2, a pressure plate 3 is provided in the sinking groove 2, a pneumatic push rod 4 is provided at the bottom of the workbench 1, and the movable end of the pneumatic push rod 4 extends into the sinking groove 2 and is fixed to the pressure plate 3; the pressing mechanism comprises a support frame 5 fixed on the workbench 1, an electric push rod 6 and a pressing plate 7, the electric push rod 6 is fixed on the support frame 5, and its output end faces the pressure plate 3 and is fixed to the pressing plate 7; the smoothing mechanism comprises a smoothing rod 8, a threaded rod 9, and a motor 10, and sliding grooves 11 for sliding of the smoothing rod 8 are provided on both sides of the opening of the sinking groove 2, the threaded rod 9 is located in the sliding groove 11 and is rotatably connected to the sliding groove 11, the threaded rod 9 is threadedly connected to the smoothing rod 8, and the motor 10 drives the threaded rod 9 to rotate.

[0029] The multi-layer circuit board pressing device adopts the above-mentioned structure. When the multi-layer circuit board needs to be pressed, the multi-layer material can be placed on the pressure plate 3, and the pressure plate 3 is pushed by the pneumatic push rod 4 so that the multi-layer material on the pressure plate 3 is against the smoothing rod 8, and the threaded rod 9 is rotated by the motor 10, thereby driving the smoothing rod 8 to smooth the multi-layer material so that the multi-layer material fits tightly together, reducing the gap between the multi-layer material and the problem of bubble bulging after the pressing is completed. After the smoothing is completed, the pneumatic push rod 4 is retracted to make the pressure plate 3 against the workbench 1, and then the electric push rod 6 pushes the pressing plate 7 to press against the pressure plate 3. This structure solves the problem that in traditional technology, manual smoothing of multi-layer materials is required, the smoothing effect is poor, and there are certain safety hazards.

[0030] In this embodiment, during the smoothing process of the multi-layer material, the multi-layer material can be effectively smoothed to reduce the gap because there is no clamping structure and the smoothing rod 8 is against the multi-layer material. However, the smoothing rod 8 is easy to drive the material on the top layer during the smoothing process, so that the multi-layer material is sometimes stratified, affecting the subsequent pressing. For this reason, an L-shaped pressing member 12 is added, so that the pressing member 12 is located between the pressure plate 3 and the sinking groove 2, and an electric push rod 2 13 is fixed on the workbench 1, so that the electric push rod 2 13 can push the pressing member 12 to move toward the pressure plate 3. The pressing member 12 is pushed toward the pressure plate 3 by the electric push rod 2 13. When the pneumatic push rod 4 pushes the pressure plate 3 to rise, part of the multi-layer material is clamped between the pressing member 12 and the pressure plate 3. In the subsequent process of the smoothing rod 8 smoothing the multi-layer material, the smoothing rod 8 will not drive the material on the top layer to move, thereby increasing the flatness of the subsequent pressing.

[0031] In this embodiment, the clamping member 12 has to resist the multi-layer material driven by the pressure plate 3. During a long period of use, the force applied to the clamping member 12 will cause certain damage to the electric push rod 13, affecting the normal operation of the electric push rod 13. For this reason, a plurality of limit rods 14 are provided between the clamping member 12 and the sinking groove 2. A sliding hole 15 for the limit rod 14 to slide is provided in the sinking groove 2. The limit rod 14 is fixed to the clamping member 12. The plurality of limit rods 14 are used to prevent the electric push rod 13 from bending and deforming after being subjected to force.

[0032] In the present embodiment, after the smoothing is completed, the smoothing rod 8 will be located in the gap between the pressure plate 3 and the sinking groove 2, which not only affects the appearance but is also easy to be touched. Therefore, an interlocking groove 16 matched with the smoothing rod 8 is provided on the side of the sinking groove 2 facing the motor 10. After the smoothing rod 8 is no longer needed, the motor 10 can drive the smoothing rod 8 to embed into the interlocking groove 16 to prevent accidental touch after the smoothing is completed.

[0033] In this embodiment, after long-term use, the surface of the smoothing rod 8 is prone to wear and tear, resulting in notches, thereby effectively smoothing the effect. However, directly replacing the smoothing rod 8 is costly and cumbersome to disassemble. In order to reduce costs and quickly disassemble and install, the smoothing rod 8 is divided into a fixed rod 81 and a contact head 82, so that the fixed rod 81 is fixed to the motor 10, and a connecting opening 17 for the contact head 82 to be plugged in is provided in the fixed rod 81, and the contact head 82 can be fixed in the connecting opening 17 by bolts. During disassembly, the bolts can be twisted to separate the contact head 82 from the fixed rod 81, and the contact head 82 can be quickly taken out and replaced.

[0034] In this embodiment, in order to increase the smoothness of the contact head 82 and prevent the contact head 82 from damaging the multi-layer material, the contact head 82 is wrapped with a flexible layer 18. It should be noted that the flexible material can be a flexible cloth, sponge or rubber wrapped with cotton and linen.

[0035] In this embodiment, in order to further enhance the exhaust effect, the side of the contact head 82 facing the motor 10 is set to be in an arc shape, and the multi-layer material is gradually smoothed by the arc-shaped side surface.

[0036] Working principle: when it is necessary to press the multi-layer circuit board, the multi-layer material can be placed on the pressure plate 3, and the pressure plate 3 is pushed by the pneumatic push rod 4, and the electric push rod 2 13 pushes the clamping piece 12 toward the pressure plate 3. During the rising process of the pressure plate 3, the multi-layer material on the pressure plate 3 is against the clamping piece 12, and at the same time against the smoothing rod 8, and then the motor 10 rotates the threaded rod 9, thereby driving the smoothing rod 8 to smooth the multi-layer material, so that the multi-layer material fits tightly between the multi-layer materials and reduces the gap between the multi-layer materials. After the smoothing is completed, the pneumatic push rod 4 is retracted to make the pressure plate 3 against the workbench 1, the electric push rod 2 13 retracts the clamping piece 12, the motor 10 rotates the threaded rod 9, and drives the smoothing rod 8 to enter the engaging groove 16, and then the pressing plate 7 is driven by the electric push rod 1 6 to press the multi-layer material on the pressure plate 3. When the smoothing rod 8 is worn, the bolt can be twisted to separate the contact head 82 from the fixing rod 81, and the contact head 82 can be quickly taken out and replaced.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer circuit board pressing device, characterized in that: include: A workbench (1), wherein a sinking trough (2) is provided in the workbench (1), a pressure plate (3) is provided in the sinking trough (2), and a pneumatic push rod (4) is provided at the bottom of the workbench (1), and a movable end of the pneumatic push rod (4) extends into the sinking trough (2) and is fixed to the pressure plate (3); The pressing mechanism comprises a support frame (5) fixed on the workbench (1), an electric push rod (6) and a pressing plate (7), wherein the electric push rod (6) is fixed on the support frame (5), and its output end faces the pressure plate (3) and is fixed to the pressing plate (7); A smoothing mechanism comprises a smoothing rod (8), a threaded rod (9), and a motor (10); sliding grooves (11) for the smoothing rod (8) to slide are provided on both sides of the opening of the sinking groove (2); the threaded rod (9) is located in the sliding groove (11) and is rotatably connected to the sliding groove (11); the threaded rod (9) is threadedly connected to the smoothing rod (8); and the motor (10) drives the threaded rod (9) to rotate.

2. A multi-layer circuit board pressing device according to claim 1, characterized in that: It also includes an L-shaped pressing member (12), which is located between the pressure plate (3) and the sinking groove (2). A second electric push rod (13) is fixed on the workbench (1), and the second electric push rod (13) can push the pressing member (12) to move toward the pressure plate (3).

3. A multi-layer circuit board pressing device according to claim 2, characterized in that: A plurality of limiting rods (14) are also provided between the abutting member (12) and the sinking groove (2), a sliding hole (15) for the limiting rods (14) to slide is provided in the sinking groove (2), and the limiting rods (14) are fixed to the abutting member (12).

4. A multi-layer circuit board pressing device according to claim 1, characterized in that: A fitting groove (16) adapted to the smoothing rod (8) is provided on the side of the sinking groove (2) facing the motor (10).

5. A multi-layer circuit board pressing device according to claim 1, characterized in that: The smoothing rod (8) comprises a fixing rod (81) and a contact head (82); the fixing rod (81) is fixed to the motor (10); a connecting opening (17) for the contact head (82) to be plugged in is provided in the fixing rod (81); the contact head (82) can be fixed in the connecting opening (17) by means of bolts.

6. A multi-layer circuit board pressing device according to claim 5, characterized in that: The contact head (82) is wrapped with a flexible layer (18).

7. A multi-layer circuit board pressing device according to claim 5, characterized in that: The side of the contact head (82) facing the motor (10) is in an arc shape.

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