Film pasting device for PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of film pasting devices, and discloses a film pasting device of a PCB (Printed Circuit Board), which comprises a bottom plate, a PCB positioning mechanism, a top plate and a film pasting mechanism, the fixing plate is used for clamping a PCB between the fixing plate and the two-way lead screw and is provided with a limiting mechanism used for locking at any position of the two-way lead screw. The top plate is arranged right above the bottom plate and is fixedly connected with the bottom plate through a plurality of guide columns which are arranged in parallel; the film pasting mechanism comprises a lifting plate and a driving device, the driving device is fixed to the top plate, the lifting plate is transversely arranged between the PCB positioning mechanism and the top plate and penetrates through the multiple guide columns, the driving device drives the lifting plate to reciprocate along the guide columns, and the lifting plate is provided with multiple negative pressure adsorption holes. The lifting plate is provided with a negative pressure adsorption device used for applying negative pressure to the negative pressure adsorption holes. The device is simple in structure, higher in stability, high in positioning accuracy and suitable for PCBs of various sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of film pasting devices, in particular to a film pasting device for a PCB board. Background Art

[0002] PCB board, also known as printed circuit board, is the support body of electronic components and the carrier for electrical connection of electronic components. With the rapid development of the electronics industry, the use of PCB boards is also growing rapidly. In the production process of PCB boards, a layer of insulating film needs to be attached to the outside. The traditional film pasting method is to apply glue on the surface of the PCB board, and then manually stick the film on the surface of the PCB board to complete the entire film pasting process. The traditional method has the following points that need to be improved: 1. The overall fixing effect of the PCB board is relatively poor during film pasting, and it cannot be guaranteed that it will not shake during film pasting, which affects the overall stability of the film pasting; 2. The film substrate is not convenient to position during film pasting, and it is easy to cause offset problems during film pasting, which affects the quality of film pasting.

[0003] CN 115946911 A discloses a PCB board film pasting device, which comprises a PCB board moving mechanism and a film pasting mechanism. However, the PCB board and the film of the device are fixed by negative pressure suction, so there are problems such as complex device structure, poor PCB board fixing effect, inaccurate positioning, low stability, etc.

[0004] Therefore, there is a need for improving the film-mounting device for PCB boards in the prior art. Utility Model Content

[0005] In view of this, the purpose of the embodiment of the utility model is to propose a film pasting device for a PCB board, which solves the problems in the prior art such as low overall stability of the film pasting, inaccurate positioning, easy deviation during film pasting, and impact on the quality of the film pasting. The device has a simple structure and is easy to operate, and is suitable for film pasting on panels of various sizes.

[0006] Based on the above purpose, the embodiment of the utility model provides a film-attaching device for a PCB board, comprising:

[0007] Base plate;

[0008] A PCB board positioning mechanism, the PCB board positioning mechanism is arranged on the bottom plate, and the PCB board positioning mechanism includes a bidirectional screw rod and two movable fixing plates arranged on the bidirectional screw rod, the fixing plates are used to clamp the PCB board between the two fixing plates and have a limiting mechanism for locking the bidirectional screw rod at any position;

[0009] A top plate, which is arranged directly above the bottom plate and is fixedly connected to the bottom plate via a plurality of parallel guide columns;

[0010] The film sticking mechanism includes a lifting plate and a driving device. The driving device is fixed on the top plate. The lifting plate is horizontally arranged between the PCB board positioning mechanism and the top plate and passes through multiple guide columns. The driving device drives the lifting plate to reciprocate along the guide columns. The lifting plate is provided with multiple negative pressure adsorption holes, and the lifting plate is provided with a negative pressure adsorption device for applying negative pressure to the negative pressure adsorption holes.

[0011] In some embodiments, the fixing plate is connected to the bidirectional lead screw via nut blocks, and two nut blocks are disposed at both ends of the bidirectional lead screw so as to move in opposite directions as the bidirectional lead screw rotates.

[0012] In some embodiments, the PCB board positioning mechanism further includes a motor, and a motor drive shaft is transmission-connected to a bidirectional lead screw.

[0013] In some embodiments, the bidirectional screw is arranged in a groove of the bottom plate, a limiting groove is further arranged on the inner wall of the groove, a limiting block is arranged on the nut block, and the limiting block is movable in the limiting groove.

[0014] In some embodiments, the negative pressure adsorption device is disposed on a side of the lifting plate opposite to the top plate, and the negative pressure adsorption device includes an air pump and an air suction pipe, and the air suction pipe is connected to the negative pressure adsorption hole.

[0015] In some embodiments, four L-shaped positioning strips are disposed on a side of the lifting plate opposite to the bottom plate.

[0016] In some embodiments, the diameter of the negative pressure adsorption hole at both ends of the lifting plate in the thickness direction is smaller than the diameter in the middle.

[0017] In some embodiments, the driving device is a hydraulic cylinder, and the end of the piston rod of the hydraulic cylinder is connected to the lifting plate to drive the lifting plate to reciprocate.

[0018] In some embodiments, a plurality of universal wheels are disposed under the bottom plate.

[0019] In some embodiments, a controller for turning on or off the driving device and the negative pressure adsorption device is also included.

[0020] The utility model has at least the following beneficial technical effects:

[0021] The present invention provides a film pasting device for a PCB board, which has a simple overall structure and is composed of a bottom plate, a lifting plate and a bottom plate arranged in parallel to form a main structure. The PCB positioning mechanism cooperates with a screw rod and a fixing plate, and can freely adjust the distance between the two fixing plates based on the size of the PCB board to clamp the PCB board, so as to ensure that the PCB board body can smoothly carry out subsequent film pasting work, and has high clamping stability and high adjustment freedom. The lifting plate of the film pasting mechanism is stably connected to the main structure through a guide column and is guaranteed to move in the same direction, so as to have higher stability and high positioning accuracy. The film is quickly grabbed by adsorption, so that the film substrate body can be attached to the negative pressure adsorption hole, and the problem of the film substrate body being warped at the corner when the film is pasted can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of an embodiment of a film-sticking device for a PCB board provided by the utility model;

[0024] Figure 2 A schematic diagram of an embodiment of a PCB board positioning mechanism provided by the utility model;

[0025] Figure 3 A schematic diagram of an embodiment of a lifting plate of a film sticking mechanism provided by the utility model;

[0026] Figure 4 This is a schematic diagram of an embodiment of the film sticking mechanism provided by the utility model.

[0027] Description of reference numerals:

[0028] 10. Bottom plate; 20. PCB board positioning mechanism; 21. Bidirectional screw rod; 22. Limit block; 23. Motor; 24. Limit slot; 25. Fixing plate; 26. Overlap plate; 27. Nut block; 30. PCB board; 40. Top plate; 50. Film sticking mechanism; 51. Driving device; 52. Lifting plate; 53. Suction pipe; 54. Negative pressure adsorption hole; 55. L-shaped positioning strip; 60. Guide column; 70. Universal wheel; 80. Film substrate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by the terms "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0031] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as being "fixed on" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0033] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] like Figure 1 The figure shows a schematic diagram of a film pasting device for a PCB board provided by the utility model. Figures 2 to 4Schematic diagram of the structure of specific components, the film sticking device includes: a bottom plate 10; a PCB board positioning mechanism 20, the PCB board positioning mechanism 20 is arranged on the bottom plate 10, the PCB board positioning mechanism 20 includes a bidirectional screw rod 21, and two movable fixing plates 25 arranged on the bidirectional screw rod 21, the fixing plates 25 are used to clamp the PCB board 30 between the two and have a limiting mechanism for locking the bidirectional screw rod 21 at any position; a top plate 40, the top plate 40 is arranged just above the bottom plate 10, and is arranged through a plurality of parallel The guide column 60 is fixedly connected to the bottom plate 10; the film pasting mechanism 50, the film pasting mechanism 50 includes a lifting plate 51 and a driving device 56, the driving device 56 is fixed on the top plate 40, the lifting plate 51 is horizontally arranged between the PCB board positioning mechanism 20 and the top plate 40, and passes through multiple guide columns 60, the driving device 56 drives the lifting plate 51 to reciprocate along the guide columns 60, the lifting plate 51 has multiple negative pressure adsorption holes 54, and the lifting plate 51 has a negative pressure adsorption device for applying negative pressure to the negative pressure adsorption holes 54.

[0035] Compared with the solutions in the prior art, in the solution of the utility model, through the cooperation of the screw rod 21 and the fixed plate 25, the distance between the two fixed plates can be freely adjusted based on the size of the PCB board to clamp the PCB board, ensuring that the PCB board body can smoothly carry out subsequent film pasting work; and the lifting plate 51 is stably connected to the main structure with the help of the guide column 60, so that the stability is higher and the positioning accuracy is high.

[0036] Furthermore, the device may also include a controller (not shown) for turning on or off the driving device 56 and the negative pressure adsorption device. The controller is connected to the driving device 56 and the negative pressure adsorption device. The controller can accurately control the displacement distance of the lifting plate 51 by the driving device 56 and the air pressure of the negative pressure adsorption device to achieve more intelligent operation.

[0037] Furthermore, the fixing plate 25 is connected to the bidirectional screw 21 through a nut block 27, and two nut blocks 27 are arranged at approximately both ends of the bidirectional screw 21 so as to move in the opposite direction as the bidirectional screw 21 rotates. The bidirectional screw has two sections of threads with different rotation directions, namely, one section of right-handed thread and one section of left-handed thread. When the screw rotates, this design allows the right-handed and left-handed nuts screwed thereon to drive the two fixing plates 25 to quickly approach or separate, thereby adjusting the spacing of the fixing plates 25 based on the size of the PCB board to achieve stable clamping. The connection between the nut block 27 and the bidirectional screw 21 is threaded, and the friction and pressure of the thread are used to achieve the tightening and fixation of the parts.

[0038] In some embodiments, Figure 2As shown, the PCB board positioning mechanism also includes a motor 23, the driving shaft of the motor 23 is connected to the bidirectional screw 21, and the motor drive can automatically drive the rotation of the bidirectional screw. The motor drive can achieve precise control of the bidirectional screw, thereby ensuring that the moving parts can be accurately positioned at the predetermined position.

[0039] In some embodiments, the bidirectional screw rod 21 is arranged in the groove of the bottom plate 10, and a limiting groove 24 is further arranged on the inner wall of the groove. A limiting block 22 is arranged on the nut block 27, and the limiting block 22 is movable in the limiting groove 24. By setting the limiting block and the limiting groove, the stability of the nut block sliding process can be improved. In a preferred embodiment, as Figure 1 The PCB board positioning mechanism 20 shown includes a bidirectional screw 21, a motor 23, a fixing plate 25, a lap plate 26 and a nut block 27. The motor 23 is installed on the side of the base plate 10, and the output end of the motor 23 is installed with a bidirectional screw 21. Two groups of nut blocks 27 are symmetrically arranged on the surface of the bidirectional screw 21. The upper end of the nut block 27 is installed with a fixing plate 25, and the side of the fixing plate 25 is installed with a lap plate 26.

[0040] Furthermore, if Figure 4 As shown, the negative pressure adsorption device is arranged on a side of the lifting plate 51 opposite to the top plate 40, and the negative pressure adsorption device (52, 53) includes an air suction pump 52 and an air suction pipe 53, and the air suction pipe 53 is connected to the negative pressure adsorption hole 54. The air suction pump can be turned on to suck air through the air suction pump, so that the film substrate body can be attached to the negative pressure adsorption hole, and the problem of the film substrate body being warped at the corner when the film is attached can be avoided.

[0041] In some embodiments, Figure 3 As shown, four L-shaped positioning bars 55 are provided on one side of the lifting plate 51 opposite to the bottom plate 10. The positioning bars can assist in positioning the film substrate 80 and help improve positioning accuracy.

[0042] Furthermore, if Figure 4 As shown, the diameter of the negative pressure adsorption hole 54 in the thickness direction of the lifting plate 51 changes by first increasing and then decreasing, that is, the diameter at both ends is smaller than the diameter in the middle, which can prevent the film substrate 80 from being sucked into the inside of the negative pressure adsorption hole 54.

[0043] Furthermore, the driving device 56 is a hydraulic cylinder, the end of the piston rod of the hydraulic cylinder is connected to the lifting plate 51 to drive the lifting plate 51 to reciprocate. The hydraulic transmission system has the characteristics of strong flexibility and high reliability, and can achieve efficient, stable and precise motion control. On the basis of this drive, the lifting plate 51 is also passed between the guide columns 60 and can only move along the direction of the guide columns 60, further ensuring the stability of the device.

[0044] Furthermore, a plurality of universal wheels 70 are provided below the base plate 10 to improve the flexibility and mobility of the device, making it easier for technicians to move the device at any time.

[0045] The working principle and use process of the utility model are as follows: when the utility model is used, firstly, glue is applied on the upper end of the PCB board 30, and then the PCB board 30 is placed on the upper end of the lap plate 26, and the motor 23 is turned on. The motor 23 drives the bidirectional screw rod 21 to rotate through the output end, and the rotation of the bidirectional screw rod 21 drives the two groups of nut blocks 27 to approach each other, and the two groups of nut blocks 27 approach each other and drive the two groups of fixing plates 25 to approach each other, so that the PCB board 30 is clamped and fixed. When the nut block 27 slides, it will drive the limit block 22 to slide inside the limit groove 24, so as to improve the stability of the sliding process of the nut block 27; The vacuum pump 52 is turned on, and the vacuum pump 52 draws air through the suction pipe 53, so that suction is generated at the position of the negative pressure adsorption hole 54, and then the film substrate 80 is placed at the lower end of the lifting plate 51, so that the film substrate 80 is positioned and the problem of warping at the corners of the film substrate 80 can be avoided. The setting of the four groups of L-shaped positioning strips 55 can adjust the placement position of the film substrate 80 so that the film substrate 80 can be smoothly applied. By arranging the negative pressure adsorption holes 54 from small to large and then from large to small inside the lifting plate 51, the film substrate 80 can be prevented from being sucked into the negative pressure adsorption holes 54.

[0046] The above are exemplary embodiments disclosed by the present utility model, but it should be noted that various changes and modifications may be made without departing from the scope of the present utility model embodiments disclosed by the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed by the present utility model embodiments may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0047] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0048] The serial numbers of the embodiments disclosed in the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A film-sticking device for a PCB board, characterized in that: include: Bottom plate (10); A PCB board positioning mechanism (20), the PCB board positioning mechanism (20) being arranged on a bottom plate (10), the PCB board positioning mechanism (20) comprising a bidirectional screw rod (21), and two movable fixing plates (25) arranged on the bidirectional screw rod (21), the fixing plates (25) being used to clamp a PCB board (30) therebetween and having a limiting mechanism for locking the bidirectional screw rod (21) at any position; A top plate (40), the top plate (40) being arranged directly above the bottom plate (10) and being fixedly connected to the bottom plate (10) via a plurality of parallel guide columns (60); A film sticking mechanism (50), the film sticking mechanism (50) comprising a lifting plate (51) and a driving device (56), the driving device (56) being fixed on the top plate (40), the lifting plate (51) being arranged transversely between the PCB board positioning mechanism (20) and the top plate (40), and passing through the plurality of guide columns (60), the driving device (56) driving the lifting plate (51) to reciprocate along the guide columns (60), the lifting plate (51) being provided with a plurality of negative pressure adsorption holes (54), and the lifting plate (51) being provided with a negative pressure adsorption device for applying negative pressure to the negative pressure adsorption holes (54).

2. The film-sticking device for PCB board according to claim 1, characterized in that: The fixing plate (25) is connected to the bidirectional screw rod (21) via a nut block (27); two nut blocks (27) are arranged at two ends of the bidirectional screw rod (21) so as to move in opposite directions when the bidirectional screw rod (21) rotates.

3. The film attaching device for PCB board according to claim 2, characterized in that: The PCB board positioning mechanism also includes a motor (23), and a drive shaft of the motor (23) is transmission-connected to the bidirectional screw rod (21).

4. The film attaching device for PCB board according to claim 2, characterized in that: The bidirectional screw rod (21) is arranged in a groove of the bottom plate (10), a limiting groove (24) is further arranged on the inner wall of the groove, a limiting block (22) is arranged on the nut block (27), and the limiting block (22) is movable in the limiting groove (24).

5. The film attaching device for PCB board according to claim 1, characterized in that: The negative pressure adsorption device is arranged on a side of the lifting plate (51) opposite to the top plate (40), and comprises an air suction pump (52) and an air suction pipe (53), wherein the air suction pipe (53) is connected to the negative pressure adsorption hole (54).

6. The film attaching device for PCB board according to claim 5, characterized in that: Four L-shaped positioning strips (55) are provided on a side of the lifting plate (51) opposite to the bottom plate (10).

7. The film attaching device for PCB board according to claim 1, characterized in that: The diameter of the negative pressure adsorption hole (54) at both ends in the thickness direction of the lifting plate (51) is smaller than the diameter at the middle.

8. The film attaching device for PCB board according to claim 1, characterized in that: The driving device (56) is a hydraulic cylinder, and the end of the piston rod of the hydraulic cylinder is connected to the lifting plate (51) to drive the lifting plate (51) to reciprocate.

9. The film attaching device for PCB board according to claim 1, characterized in that: A plurality of universal wheels (70) are arranged below the bottom plate (10).

10. The film attaching device for PCB board according to claim 1, characterized in that: It also includes a controller for turning on or off the driving device (56) and the negative pressure adsorption device.

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