Bearing mechanism of PCBA (Printed Circuit Board Assembly) packaging device

Abstract

The utility model discloses a bearing mechanism of a PCBA packaging device. The bearing mechanism comprises a conveyor belt; the driving wheel is sleeved with the conveying belt; the rotating wheels comprise two first rotating wheels which are horizontally arranged on the upper portion and two second rotating wheels which are horizontally arranged on the lower portion, and the driving wheels are located between the first rotating wheels and the second rotating wheels; the lifting assembly comprises a lifting plate and a tensioning wheel, and the center of the tensioning wheel is rotationally connected to the bottom of the lifting plate; the lifting plate is located below the conveying belt between the two first rotating wheels, and the tensioning wheel is located above the conveying belt between the two second rotating wheels. The lifting assembly is provided with a standby position and a lifting position, when the lifting assembly is located at the standby position, the lifting plate is not higher than the first rotating wheels, and the tensioning wheel is lower than the second rotating wheels and tensions the conveying belt between the two second rotating wheels; and the clamping plate is fixedly arranged above the conveying belt. According to the bearing mechanism of the PCBA packaging device, the conveying belt and the PCBA board are lifted together, so that the lifting process is more stable, and the packaging efficiency is improved in cooperation with software deviation correction.

Description

Technical Field

[0001] The present invention relates to the field of PCBA packaging technology, and in particular to a bearing mechanism of a PCBA packaging device. Background Art

[0002] There are many packaging methods for PCBA (Printed Circuit Board + Assembly), such as coating the surface of the circuit board with conformal coating, potting and low-pressure injection molding. Each of the above methods has its own advantages and disadvantages: direct spraying of conformal coating, although simple, convenient and easy to implement, cannot truly protect the circuit board, cannot achieve waterproof and shockproof, and the packaging may fail over time; potting is cumbersome, inefficient, costly and has poor reliability; low-pressure injection molding uses low-pressure injection molding equipment, special molds, and adjusts the corresponding injection pressure and time to complete the packaging of the circuit board. This method has high mold design and production costs, and the characteristics of the glue itself have a greater impact on the packaging.

[0003] In the patent with publication number WO2023060691A1 and titled “PCBA board packaging method and packaging device thereof”, the adopted solution is suitable for the reliable packaging of low-height PCBAs (PCBA boards). However, the incoming PCBAs often shift. If the angle of the PCBA is not adjusted correctly in time, the defective rate of subsequent packaged products will increase.

[0004] To solve the above problems, the inventor disclosed in a patent with publication number CN116997094A titled PCBA packaging device and PCBA offset adjustment method that correction is performed by lifting and clamping. However, the outer contour of the packaging layer formed by the method disclosed in the patent in actual application has sawtooth features and position offset problems, and does not meet the micron-level packaging accuracy, especially when the packaging space is very limited, it is difficult to meet the packaging requirements.

[0005] To further solve the above problems, the inventor disclosed in the patent with publication number CN118804495A and titled PCBA Packaging Device and PCBA Deviation Correction Packaging Method that correction is performed by lifting and rotating. However, in actual application, although the method disclosed in the patent can improve the packaging accuracy by solving the offset problem of PCBA, its deviation correction process is still complicated and involves adjustments in multiple positions, so that the packaging efficiency is still low. Utility Model Content

[0006] In view of the deficiencies in the prior art, one purpose of this specification is to provide a bearing mechanism for a PCBA packaging device, which lifts the conveyor belt and the PCBA board together, making the lifting process more stable, and cooperates with software correction to improve the packaging efficiency.

[0007] To achieve the above-mentioned purpose, the embodiments of this specification provide a bearing mechanism of a PCBA packaging device, including:

[0008] Conveyor belt, used to transport PCBA boards;

[0009] A driving wheel for driving the conveyor belt to rotate, wherein the conveyor belt is sleeved outside the driving wheel;

[0010] A plurality of rotating wheels for defining the rotation track of the conveyor belt, wherein the plurality of rotating wheels include two first rotating wheels located above and arranged horizontally, and two second rotating wheels located below and arranged horizontally; in the vertical direction, the driving wheel is located between the first rotating wheels and the second rotating wheels;

[0011] A lifting assembly, comprising a lifting plate and a tensioning wheel, wherein the center of the tensioning wheel is rotatably connected to the bottom of the lifting plate; the lifting plate is located below the conveyor belt between the two first rotating wheels, and the tensioning wheel is located above the conveyor belt between the two second rotating wheels; the lifting assembly has a standby position and a lifting position, when the lifting assembly is located at the standby position, the lifting plate is not higher than the first rotating wheel, the tensioning wheel is lower than the second rotating wheel and the conveyor belt between the two second rotating wheels is tensioned; when the lifting assembly is located at the lifting position, the lifting plate is higher than the first rotating wheel and the conveyor belt between the two first rotating wheels is tensioned, and the tensioning wheel is not lower than the second rotating wheel;

[0012] A clamping plate is fixedly arranged above the conveyor belt; when the lifting assembly is located at the lifting position, the clamping plate and the conveyor belt clamp the PCBA board.

[0013] As a preferred embodiment, a groove for accommodating the conveyor belt is provided on the top of the lifting plate, and the width of the groove is greater than the width of the conveyor belt.

[0014] As a preferred embodiment, when the lifting assembly is located at the standby position, there is a predetermined distance between the bottom surface of the groove and the bottom surface of the conveyor belt between the two first rotating wheels, and the top surface of the lifting plate is lower than the top surface of the conveyor belt.

[0015] As a preferred embodiment, when the lifting assembly is located at the lifting position, the bottom surface of the groove fits with the bottom surface of the conveyor belt between the two first rotating wheels, and the top surface of the lifting plate is lower than the top surface of the conveyor belt.

[0016] As a preferred embodiment, when the lifting assembly is located at the standby position and the lifting position, the total length of the conveyor belt is equal.

[0017] As a preferred implementation manner, the projection of the clamping plate on the horizontal plane partially overlaps with the projection of the conveyor belt on the horizontal plane.

[0018] As a preferred embodiment, the lifting assembly further includes a first power member connected to the lifting plate, for driving the lifting plate to move up and down so as to switch between the standby position and the lifting position.

[0019] As a preferred embodiment, the driving wheel is connected to a second power member for driving the driving wheel to rotate; the second power member is located on a side of the lifting plate away from the driving wheel.

[0020] As a preferred embodiment, the bearing mechanism of the PCBA packaging device further includes a bearing plate, the center of the first rotating wheel is rotatably connected to the bearing plate, and the clamping plate is fixedly connected to the top of the bearing plate.

[0021] As a preferred embodiment, the bottom of the supporting plate is fixedly connected with a first mounting frame and a second mounting frame, the fixed end of the first power member is fixedly connected to the bottom of the first mounting frame; the center rotation of the second rotating wheel is connected to the first mounting frame; the fixed end of the second power member is fixedly connected to the second mounting frame, and the center rotation of the driving wheel is connected to the second mounting frame. Beneficial Effects

[0022] The bearing mechanism of the PCBA packaging device provided in this embodiment can lift the conveyor belt and the PCBA board together by setting a conveyor belt, a driving wheel, a rotating wheel, a lifting assembly and a clamping plate, especially the cooperation of the lifting assembly and the rotating wheel, so that the lifting process is more stable. In addition, through the cooperation of the conveyor belt, the lifting assembly and the clamping plate, the bearing mechanism only needs to lift the PCBA board and clamp it, without providing a correction function (that is, no hardware correction is required), and the subsequent correction by software (refer to the substrate packaging method provided in the patent with publication number CN116056359A and the name of the substrate packaging method and substrate packaging device) is sufficient, so that there is no need to adjust multiple positions, simplify the correction process, and improve the packaging efficiency.

[0023] With reference to the following description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope.

[0024] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0025] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a supporting mechanism of a PCBA packaging device provided in this embodiment;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the PCBA packaging device when the carrying mechanism carries the PCBA board;

[0029] Figure 3 A partial structural schematic diagram of a supporting mechanism of a PCBA packaging device provided in this embodiment;

[0030] Figure 4 for Figure 3 An enlarged schematic diagram of part I;

[0031] Figure 5 It is a partial top view of a supporting mechanism of a PCBA packaging device provided in this embodiment.

[0032] Description of reference numerals:

[0033] 1. Conveyor belt; 2. Driving wheel; 3. Second power member; 4. First rotating wheel; 5. Second rotating wheel; 6. Third rotating wheel; 7. Lifting assembly; 71. Lifting plate; 711. Groove; 72. Tensioning wheel; 73. First power member; 8. Clamping plate; 9. Loading plate; 91. First mounting frame; 92. Second mounting frame; 10. PCBA board. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be another element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be another element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] See also Figures 1 to 5 The embodiment of the present application provides a bearing mechanism of a PCBA packaging device, which is characterized by comprising: a conveyor belt 1, a driving wheel 2, a rotating wheel, a lifting component 7 and a clamping plate 8.

[0038] The conveyor belt 1 is used to transport the PCBA board 10. The conveyor belt 1 is sleeved outside the driving wheel 2, and the driving wheel 2 is used to drive the conveyor belt 1 to rotate. A plurality of rotating wheels are used to define the rotation track of the conveyor belt 1. The plurality of rotating wheels include two first rotating wheels 4 located above and horizontally arranged, and two second rotating wheels 5 located below and horizontally arranged. In the vertical direction, the driving wheel 2 is located between the first rotating wheel 4 and the second rotating wheel 5.

[0039] The lifting assembly 7 includes a lifting plate 71 and a tensioning wheel 72. The center of the tensioning wheel 72 is rotatably connected to the bottom of the lifting plate 71. The lifting plate 71 is located below the conveyor belt 1 between the two first rotating wheels 4. The tensioning wheel 72 is located above the conveyor belt 1 between the two second rotating wheels 5. The lifting assembly 7 has a standby position and a lifting position. When the lifting assembly 7 is located at the standby position, the lifting plate 71 is not higher than the first rotating wheel 4, the tensioning wheel 72 is lower than the second rotating wheel 5 and the conveyor belt 1 (hereinafter referred to as "lower belt") between the two second rotating wheels 5 is tensioned. When the lifting assembly 7 is located at the lifting position, the lifting plate 71 is higher than the first rotating wheel 4 and the conveyor belt 1 (hereinafter referred to as "upper belt") between the two first rotating wheels 4 is tensioned, and the tensioning wheel 72 is not lower than the second rotating wheel 5.

[0040] The clamping plate 8 is fixedly disposed above the conveyor belt 1. When the lifting assembly 7 is located at the lifting position, the clamping plate 8 and the conveyor belt 1 clamp the PCBA board 10.

[0041] The bearing mechanism of the PCBA packaging device provided in this embodiment can lift the conveyor belt 1 and the PCBA board 10 together by setting the conveyor belt 1, the driving wheel 2, the rotating wheel, the lifting component 7 and the clamping plate 8, especially the cooperation of the lifting component 7 and the rotating wheel, so that the lifting process is more stable. In addition, through the cooperation of the conveyor belt 1, the lifting component 7 and the clamping plate 8, the bearing mechanism only needs to lift and clamp the PCBA board 10, and there is no need to provide a correction function (that is, no hardware correction is required), and the subsequent correction can be carried out with software (refer to the substrate packaging method provided in the patent with the publication number CN116056359A and the name of the substrate packaging method and substrate packaging device), so there is no need to adjust multiple positions, simplify the correction process, and improve the packaging efficiency.

[0042] In this embodiment, if Figure 4 As shown, a groove 711 for accommodating the conveyor belt 1 is provided on the top of the lifting plate 71, and the width of the groove 711 is greater than the width of the conveyor belt 1, thereby reducing or eliminating the friction between the side wall of the groove 711 and the conveyor belt 1, ensuring smooth rotation of the conveyor belt 1.

[0043] Specifically, when the lifting assembly 7 is located at the standby position, there is a predetermined distance between the bottom surface of the groove 711 and the bottom surface of the conveyor belt 1 between the two first rotating wheels 4, so that the lifting plate 71 does not contact the conveyor belt 1, and the lifting plate 71 has no resistance to the conveyor belt 1. When the lifting assembly 7 is located at the lifting position, the bottom surface of the groove 711 fits with the bottom surface of the conveyor belt 1 between the two first rotating wheels 4, and the lifting plate 71 lifts the conveyor belt 1 and the PCBA board 10 together. During the lifting process, the PCBA board 10 is always located on the conveyor belt 1, thereby ensuring a more stable lifting and preventing the PCBA board 10 from shaking.

[0044] In this embodiment, the top surface of the lifting plate 71 (i.e., the top surface of the side wall of the groove 711) is always lower than the top surface of the conveyor belt 1, so that the PCBA board 10 is always located on the conveyor belt 1 and will not be lifted up by the lifting plate 71 and leave the conveyor belt 1, making the lifting more stable and preventing the PCBA board 10 from shaking.

[0045] Preferably, when the lifting assembly 7 is located in the standby position and the lifting position, the total length of the conveyor belt 1 is equal, that is, the tensioning force of the tensioning wheel 72 on the lower belt when the lifting assembly 7 is in the standby position is equal to the tensioning force of the lifting plate 71 on the upper belt when the lifting assembly 7 is in the lifting position, thereby avoiding fatigue damage to the conveyor belt 1 caused by repeated lifting of the conveyor belt 1 and ensuring the service life of the conveyor belt 1.

[0046] like Figure 5 As shown, the projection of the clamping plate 8 on the horizontal plane partially overlaps with the projection of the conveyor belt 1 on the horizontal plane. When the conveyor belt 1 transports the PCBA board 10, the conveyor belt 1 is covered by the PCBA board 10. After the PCBA board 10 is lifted, it needs to be clamped by the clamping plate 8 and the conveyor belt 1, so the clamping plate 8 needs to overlap with the conveyor belt 1, otherwise the PCBA board 10 will be damaged. In addition, in order to make the usable area on the PCBA board 10 as large as possible, it is necessary to minimize the overlap between the clamping plate 8 and the conveyor belt 1, thereby reducing the area of ​​the PCBA board 10 covered by the clamping plate 8.

[0047] In this embodiment, the lifting assembly 7 further includes a first power member 73 connected to the lifting plate 71, for driving the lifting plate 71 to move up and down to switch between the standby position and the lifting position. The first power member 73 can be a linear motor.

[0048] Specifically, the driving wheel 2 is connected to a second power member 3 for driving the driving wheel 2 to rotate. The second power member 3 is located on a side of the lifting plate 71 away from the driving wheel 2. The second power member 3 can be a rotary motor.

[0049] like Figure 1 and Figure 2 As shown, the bearing mechanism of the PCBA packaging device further includes a bearing plate 9. It should be noted that there are two bearing plates 9, and accordingly, there are two conveyor belts 1, driving wheels 2, lifting components 7 and clamping plates 8, and they are arranged opposite to each other. The center of the first rotating wheel 4 is rotatably connected to the bearing plate 9, and the clamping plate 8 is fixedly connected to the top of the bearing plate 9, and the bearing plate 9 provides a reliable and stable connection for the bearing mechanism.

[0050] Specifically, Figure 3 As shown, the bottom of the carrying plate 9 is fixedly connected with a first mounting frame 91 and a second mounting frame 92, and the fixed end of the first power member 73 is fixedly connected to the bottom of the first mounting frame 91. The center of the second rotating wheel 5 is rotatably connected to the first mounting frame 91. The fixed end of the second power member 3 is fixedly connected to the second mounting frame 92, and the center of the driving wheel 2 is rotatably connected to the second mounting frame 92.

[0051] Preferably, the driving wheel 2 is arranged close to the second rotating wheel 5, and the rotating wheel further comprises two third rotating wheels 6 arranged horizontally between the first rotating wheel 4 and the second rotating wheel 5, so as to ensure smooth rotation of the conveyor belt 1. The conveyor belt 1 passes through the first rotating wheel 4, the third rotating wheel 6, the driving wheel 2, the third rotating wheel 6, the second rotating wheel 5, (the tensioning wheel 72,) the second rotating wheel 5 and the first rotating wheel 4 in sequence.

[0052] It should be noted that, in the description of this specification, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this specification, unless otherwise specified, the meaning of "plurality" is two or more.

[0053] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is set forth to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in the specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly set forth in the specification in a similar manner.

[0054] Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0055] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0056] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0057] It should be understood that the above description is for illustration and not for limitation. By reading the above description, many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by these claims. For the purpose of comprehensiveness, all articles and references, including the disclosures of patent applications and announcements, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to abandon the subject matter, nor should it be considered that the inventor has not considered the subject matter as part of the disclosed utility model subject matter.

Claims

1. A bearing mechanism for a PCBA packaging device, characterized in that: include: Conveyor belt, used to transport PCBA boards; A driving wheel for driving the conveyor belt to rotate, wherein the conveyor belt is sleeved outside the driving wheel; A plurality of rotating wheels for defining the rotation track of the conveyor belt, wherein the plurality of rotating wheels include two first rotating wheels located above and arranged horizontally, and two second rotating wheels located below and arranged horizontally; in the vertical direction, the driving wheel is located between the first rotating wheels and the second rotating wheels; A lifting assembly, comprising a lifting plate and a tensioning wheel, wherein the center of the tensioning wheel is rotatably connected to the bottom of the lifting plate; the lifting plate is located below the conveyor belt between the two first rotating wheels, and the tensioning wheel is located above the conveyor belt between the two second rotating wheels; the lifting assembly has a standby position and a lifting position, when the lifting assembly is located at the standby position, the lifting plate is not higher than the first rotating wheel, the tensioning wheel is lower than the second rotating wheel and the conveyor belt between the two second rotating wheels is tensioned; when the lifting assembly is located at the lifting position, the lifting plate is higher than the first rotating wheel and the conveyor belt between the two first rotating wheels is tensioned, and the tensioning wheel is not lower than the second rotating wheel; A clamping plate is fixedly arranged above the conveyor belt; when the lifting assembly is located at the lifting position, the clamping plate and the conveyor belt clamp the PCBA board.

2. The carrying mechanism of the PCBA packaging device according to claim 1, characterized in that: A groove for accommodating the conveyor belt is provided on the top of the lifting plate, and the width of the groove is greater than the width of the conveyor belt.

3. The carrying mechanism of the PCBA packaging device according to claim 2, characterized in that: When the lifting assembly is located at the standby position, there is a predetermined distance between the bottom surface of the groove and the bottom surface of the conveyor belt between the two first rotating wheels, and the top surface of the lifting plate is lower than the top surface of the conveyor belt.

4. The carrying mechanism of the PCBA packaging device according to claim 2, characterized in that: When the lifting assembly is located at the lifting position, the bottom surface of the groove fits with the bottom surface of the conveyor belt between the two first rotating wheels, and the top surface of the lifting plate is lower than the top surface of the conveyor belt.

5. The carrying mechanism of the PCBA packaging device according to claim 1, characterized in that: When the lifting assembly is located at the standby position and the lifting position, the total length of the conveyor belt is equal.

6. The carrying mechanism of the PCBA packaging device according to claim 1, characterized in that: The projection of the clamping plate on the horizontal plane partially overlaps with the projection of the conveyor belt on the horizontal plane.

7. The carrying mechanism of the PCBA packaging device according to claim 1, characterized in that: The lifting assembly also includes a first power member connected to the lifting plate, which is used to drive the lifting plate to move up and down so as to switch between the standby position and the lifting position.

8. The carrying mechanism of the PCBA packaging device according to claim 7, characterized in that: The driving wheel is connected to a second power member for driving the driving wheel to rotate; the second power member is located on a side of the lifting plate away from the driving wheel.

9. The carrying mechanism of the PCBA packaging device according to claim 8, characterized in that: The bearing mechanism of the PCBA packaging device further includes a bearing plate, the center of the first rotating wheel is rotatably connected to the bearing plate, and the clamping plate is fixedly connected to the top of the bearing plate.

10. The carrying mechanism of the PCBA packaging device according to claim 9, characterized in that: The bottom of the supporting plate is fixedly connected with a first mounting frame and a second mounting frame, the fixed end of the first power member is fixedly connected to the bottom of the first mounting frame; the center rotation of the second rotating wheel is connected to the first mounting frame; the fixed end of the second power member is fixedly connected to the second mounting frame, and the center rotation of the driving wheel is connected to the second mounting frame.

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