Fully automatic labeling machine for PCBA production and its labeling method

Abstract

The present invention belongs to the field of conveying technology, and particularly relates to a fully automatic labeling machine for PCBA production and a labeling method thereof. A fully automatic labeling machine for PCBA production includes: a labeling device disposed above the conveyor belt; a loading manipulator disposed above the conveyor belt; wherein, a label feeding device drives the label to move towards the conveyor belt so that the middle part of the label is convex; the loading manipulator is adapted to adsorb the label by negative pressure to first adhere both ends of the label to the surface of the PCBA circuit board; a pressing roller of the labeling device rolls from the middle part of the label towards both ends in sequence so that the bonding parts of both ends of the label and the PCBA circuit board are wrinkled; through the setting of the label feeding device, when the label moves to the surface of the PCBA circuit board, the middle part of the label bulges upwards. After the labeling device presses the label onto the surface of the PCBA circuit board, wrinkles are formed at both ends of the label, providing a buffer space for material expansion, reducing stress, and prolonging the service life of the label.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying, and particularly relates to a labeling machine, and more particularly to a full-automatic labeling machine for PCBA production and a labeling method thereof. Background Art

[0002] PCBA (Printed Circuit Board Assembly), pasting labels after production is a key step in the electronic manufacturing process, and its functions involve multiple aspects such as production management, quality control, use and maintenance.

[0003] In the related art, the label is horizontally attached to the PCBA circuit board. However, the thermal expansion and contraction of the PCBA circuit board during operation may cause the label to fall off, and the falling off of the label will cause the subsequent operations to fail to recognize the label.

[0004] Therefore, how to avoid the label from falling off during the thermal expansion and contraction of the PCBA circuit board is a technical problem that needs to be solved urgently in this field.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered to constitute information on the related art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a full-automatic labeling machine for PCBA production and a labeling method thereof.

[0007] In a first aspect, the embodiments of the present disclosure provide a full-automatic labeling machine for PCBA production, including:

[0008] A conveyor belt, which is adapted to drive the PCBA circuit board to move horizontally;

[0009] A label feeding device, which is arranged on one side of the conveyor belt and is adapted to support the label;

[0010] A labeling device, which is arranged above the conveyor belt;

[0011] A loading manipulator, which is arranged above the conveyor belt;

[0012] Wherein, the label feeding device drives the label to move towards the conveyor belt so that the middle part of the label is convex;

[0013] The loading manipulator is adapted to adsorb the label by negative pressure to first adhere the two ends of the label to the surface of the PCBA circuit board;

[0014] The pressure roller of the labeling device rolls from the middle of the label to both ends in sequence so that the bonding parts of the two ends of the label and the PCBA circuit board are wrinkled.

[0015] In an alternative embodiment, the label feeding device includes: a fixing plate, on both sides in the length direction of which two support plates are vertically arranged;

[0016] A label feeding disc slidably arranged on the side wall of the support plate, and the two label feeding discs are arranged vertically offset;

[0017] A driving gear disc rotatably arranged on the side wall of the support plate and meshing with the two label feeding discs;

[0018] Wherein, the driving gear disc rotates forward and backward to move one of the label feeding discs towards the conveyor belt.

[0019] In an alternative embodiment, a plurality of placement grooves are formed in the label feeding disc along the length direction, and the grooving depth of the placement grooves gradually deepens from the middle to both ends.

[0020] In an alternative embodiment, a horizontal groove is respectively arranged at both ends of the placement groove. When the loading manipulator moves above the placement groove, the horizontal groove is aligned with the negative pressure suction cup of the loading manipulator.

[0021] In an alternative embodiment, a plurality of through holes are formed in the bottom wall of the placement groove, and the plurality of through holes are respectively arranged in the middle of the placement groove and near the horizontal grooves at both ends.

[0022] In an alternative embodiment, linear racks adapted to the driving gear disc are arranged on the side walls of the label feeding discs, and the two linear racks are arranged oppositely;

[0023] A plurality of support rollers are evenly distributed on the surface of the fixing plate, and the support rollers are adapted to abut against one of the linear racks located below.

[0024] In an alternative embodiment, a positioning device is arranged to be lifted and lowered at the labeling station of the conveyor belt, and the positioning device is adapted to limit the horizontal movement of the PCBA circuit board.

[0025] In an alternative embodiment, the positioning device includes: a positioning block, on the side wall of which a lifting cylinder is arranged;

[0026] A supporting plate vertically fixed at the end of the piston rod of the lifting cylinder;

[0027] Adjusting cylinders, the two adjusting cylinders are respectively arranged on both sides of the supporting plate, and a limiting member is arranged at the end of the piston rod of each adjusting cylinder, and the limiting member is adapted to clamp the PCBA circuit board from both sides.

[0028] In an alternative embodiment, a plurality of suction discs are arranged in a matrix on the supporting plate, the suction discs are communicated with a negative pressure air pump, and the suction discs are adapted to suck the bottom wall of the PCBA circuit board under negative pressure.

[0029] In a second aspect, an embodiment of the present disclosure further provides a label feeding device, including:

[0030] Two support plates arranged oppositely;

[0031] And a label feeding tray slidably arranged between the two support plates, and the two label feeding trays are arranged in a vertical offset manner;

[0032] The label feeding tray is provided with a placement groove suitable for supporting the label, and the depth of the placement groove gradually deepens from the middle to both ends;

[0033] Wherein, when the label is located in the placement groove, the bottom wall of the placement groove limits the label so that the middle part of the label bulges upward.

[0034] In an optional embodiment, a horizontal groove is respectively arranged at both ends of the placement groove. When the feeding manipulator moves above the placement groove, the horizontal groove is aligned with the negative pressure suction cup of the feeding manipulator.

[0035] In a third aspect, an embodiment of the present disclosure further provides a labeling method for a full-automatic labeling machine, and the labeling method includes:

[0036] The label feeding device drives the label to move towards the conveyor belt so that the middle part of the label bulges; the feeding manipulator is suitable for negatively adsorbing the label to first adhere both ends of the label to the surface of the PCBA circuit board. At this time, the middle part of the label bulges upward; the pressure roller of the labeling device rolls from the middle part of the label to both ends in sequence so that the bonding parts of both ends of the label and the PCBA circuit board are wrinkled.

[0037] The beneficial effect of the present invention is that the present invention provides a full-automatic labeling machine for PCBA production and its labeling method. Through the cooperation of the label feeding device and the labeling device, when the feeding manipulator places the label on the surface of the PCBA circuit board, the middle part of the label bulges upward. The pressure roller presses the label from the middle part of the label to both ends in sequence so that the bonding parts of both ends of the label and the PCBA circuit board are wrinkled. The wrinkles avoid the identification area in the middle part of the label, which is convenient for subsequent identification; at the same time, both ends of the label are wrinkled and attached to the surface of the PCBA circuit board, providing a buffer space for material expansion, reducing stress, and prolonging the life of the label.

[0038] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0039] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby cited and, in conjunction with the accompanying drawings, are described in detail as follows. Description of the Drawings

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Stereogram of the fully automatic labeling machine for PCBA production provided by an embodiment of the present disclosure;

[0042] Figure 2 Stereogram of the label feeding device and the conveyor belt provided by an embodiment of the present disclosure;

[0043] Figure 3 Stereogram of the label feeding device provided by an embodiment of the present disclosure;

[0044] Figure 4 Stereogram of the label feeding tray provided by an embodiment of the present disclosure;

[0045] Figure 5 Front sectional view of the label feeding tray provided by an embodiment of the present disclosure;

[0046] Figure 6 Schematic diagram of the state where the label is attached to the PCBA circuit board provided by an embodiment of the present disclosure;

[0047] Figure 7 Schematic diagram of the state where the pressing roller abuts against the label provided by an embodiment of the present disclosure;

[0048] Figure 8 Schematic diagram of the state of the two ends of the label being wrinkled after attachment provided by an embodiment of the present disclosure;

[0049] Figure 9 Stereogram of the positioning device provided by an embodiment of the present disclosure.

[0050] In the figure:

[0051] 1. Conveyor belt; 10. Positioning device; 101. Positioning block; 102. Supporting plate; 103. Adjusting cylinder; 104. Limiting member; 105. Suction cup;

[0052] 2. Label feeding device; 21. Fixed plate; 22. Support plate; 23. Label feeding tray; 24. Driving gear disk; 25. Placing groove; 26. Horizontal groove; 27. Through hole; 28. Support roller; 29. Linear rack;

[0053] 3. Labeling device; 30. Pressing roller;

[0054] 4. Loading manipulator; 40. Negative pressure suction cup;

[0055] 5. Label; 6. PCBA circuit board. Detailed implementation

[0056] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0057] In this document, when it is mentioned that the first component is located on the second component, this may mean that the first component can be directly formed on the second component, or a third component can be inserted between the first component and the second component. In addition, in the drawings, for the effective description of the technical content, the thickness of the components can be exaggerated or reduced.

[0058] In this document, the exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0059] The terms used in this document are only for describing specific exemplary configurations and are not intended to be restrictive. As used herein, the singular articles "a", "an", and "the" may also be intended to include the plural forms, unless clearly stated otherwise in this document. The terms "comprising", "including", and "having" are inclusive, and thus specify the presence of features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or their combinations. The method steps, processes, and operations described in this document should not be construed as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as the order of execution. Additional or alternative steps may be employed.

[0060] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific feature, structure, or characteristic after the phrase can be included in at least one embodiment of the present disclosure. Thus, a specific feature, structure, or characteristic can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "to serve as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of the terms "example", "exemplary", etc. is intended to present concepts in a concrete manner.

[0061] It has been found through research that in the related art, the label is horizontally attached to the PCBA circuit board. However, the thermal expansion and contraction of the PCBA circuit board during operation may cause the label to fall off. At the same time, bubbles are generated when the label is horizontally attached, and the generation of bubbles also easily accelerates the falling off of the label. The falling off of the label will cause the subsequent operations to fail to recognize the label.

[0062] Therefore, how to avoid the label from falling off when the PCBA circuit board undergoes thermal expansion and contraction is a technical problem that urgently needs to be solved in the art.

[0063] Regarding the defects of the above solutions and the reasons for their occurrence, they are all the results obtained by the inventors after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed in the present disclosure for the above problems by the present disclosure should all be the contributions made by the inventors to the present disclosure during the process of the present disclosure.

[0064] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0065] The following will, with reference to the drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0066] As Figures 1 to 9As shown, at least one embodiment provides a fully automatic labeling machine for PCBA production, comprising: a conveyor belt 1, adapted to drive a PCBA circuit board 6 to move horizontally to a labeling station. Furthermore, a positioning device 10 is provided on the conveyor belt 1 at the labeling station for lifting and lowering. The positioning device 10 is adapted to limit the horizontal movement of the PCBA circuit board 6. The positioning device 10 comprises: a positioning block 101, the sidewall of which is provided with a lifting cylinder; a support plate 102, which is vertically fixed to the end of the piston rod of the lifting cylinder; and an adjusting cylinder 103, two adjusting cylinders 103 being provided on either side of the support plate 102, each with a stopper 104 provided on the end of the piston rod of the adjusting cylinder 103. The stopper 104 is adapted to clamp the PCBA circuit board 6 from both sides. After the PCBA circuit board 6 moves to the labeling station, the lifting cylinder drives the supporting plate 102 to move upward, and the two limiting members 104 first clamp and limit the PCBA circuit board 6 from both ends; a plurality of adsorption plates 105 are arranged in a matrix on the supporting plate 102, and the adsorption plates 105 are connected to the negative pressure air pump, and the adsorption plates 105 are suitable for negative pressure adsorption of the bottom wall of the PCBA circuit board 6.

[0067] In this embodiment, the label is attached to the surface of the PCBA circuit board for easy identification during subsequent production management and quality control. Therefore, high-strength adhesives are not used during label application, and the label may need to be removed when necessary. In other fields, such as automotive and aerospace, labels require high-strength adhesives, but these adhesives can cause chemical contamination of the PCBA circuit board. In the food and pharmaceutical packaging field, labels are pre-coated with hot-melt adhesive and feature surface microstructures (to increase friction). However, these technologies still have the following limitations: First, insufficient temperature resistance: hot-melt adhesives easily soften and fail in the high-temperature operating environment (>85°C) of the PCBA. Second, chemical contamination: volatile colloidal products may corrode the solder joints of the circuit board. Therefore, the transfer of label anti-slip technology from other fields to other fields faces insurmountable obstacles. In this embodiment, the wrinkled area of the label avoids the labeling area, simultaneously resolving the conflict between stress relief and label clarity. Therefore, transfer from other fields to this PCBA circuit board field is not feasible.

[0068] Reference Attachment Figure 2The label feeding device 2 is located on one side of the conveyor belt 1 and is adapted to support the label 5. The label feeding device 2 is located on the side of the conveyor belt 1 away from the labeling device 3 and is used to store and position the label 5 so that its center portion is raised. The labeling device 3 is located above the conveyor belt 1 and includes a horizontal moving pair and a labeling cylinder mounted on the sidewall of the slider of the horizontal moving pair. A pressure roller 30 is used to compress the label 5. The pressure roller 30 is located at the end of the piston rod of the labeling cylinder. A loading robot 4 is located above the conveyor belt 1 and is used to apply negative pressure to the label 5 and adhere it to the surface of the circuit board. The label feeding device 2 drives the label 5 toward the conveyor belt 1, causing the center portion of the label 5 to form a raised shape. The loading robot 4 is adapted to apply negative pressure to the label 5, initially adhering both ends of the label 5 to the surface of the PCBA 6. The pressure roller 30 of the labeling device 3 rolls from the center of the label 5 toward the ends, creating wrinkles where the ends of the label 5 adhere to the PCBA 6.

[0069] Reference Attachment Figure 3 The label feeding device 2 includes: a fixed plate 21, which is arranged horizontally and has two support plates 22 arranged vertically on both sides of its length; a label feeding disc 23 slidably arranged on the side wall of the support plate 22, and the two label feeding discs 23 are staggered vertically; the two label feeding discs 23 are at different heights, and when one label feeding disc 23 moves toward the conveyor belt 1, the other label feeding disc 23 moves away from the conveyor belt 1. A movable gear disc is rotatably arranged on the side wall of the support plate 22 and engages with the two label feeding discs 23; a drive motor is installed on the outer wall of the support plate 22, and the drive gear disc 24 is mounted on the outer wall of the drive motor's rotating shaft; the drive gear disc 24 rotates forward and backward to move one of the label feeding discs 23 toward the conveyor belt 1. The label feeding disc 23 is provided with a plurality of placement slots 25 along its length, and the slot depth of the placement slots 25 gradually deepens from the middle to the ends.

[0070] Reference Attachment Figure 2 and Figure 4 A horizontal groove 26 is provided at each end of the placement groove 25. When the loading robot 4 moves above the placement groove 25, the horizontal groove 26 is aligned with the negative pressure suction cup 40 of the loading robot 4 to ensure the stability of the negative pressure suction cup 40 when adsorbing the label 5.

[0071] Continue to refer to the attached Figure 3 The bottom wall of the placement slot 25 is formed with a plurality of through holes 27, which are located in the middle of the placement slot 25 and at both ends near the horizontal slot 26. The provision of through holes 27 prevents the bottom wall of the label 5 from being attracted by the bottom wall of the placement slot 25 when the label 5 falls out of the placement slot 25, allowing the label 5 to be released from the placement slot 25 more smoothly.

[0072] Continue to refer to the attachedFigure 3 To improve the stability of the horizontal movement of the label feeding tray 23, linear racks 29 adapted to the driving gear disc 24 are provided on the side walls of the label feeding tray 23, and the two linear racks 29 are arranged oppositely; a plurality of support rollers 28 are evenly distributed on the surface of the fixed plate 21, and the support rollers 28 are adapted to abut against one of the linear racks 29 located below.

[0073] Refer to the appendix Figure 3 At least one embodiment provides a label feeding device 2 including: two support plates 22 arranged oppositely; and a label feeding tray 23 slidably arranged between the two support plates 22, and the two label feeding trays 23 are arranged vertically offset; a placement groove 25 adapted to support the label 5 is formed on the label feeding tray 23, and the depth of the opening of the placement groove 25 gradually deepens from the middle to both ends; wherein, when the label 5 is located in the placement groove 25, the bottom wall of the placement groove 25 limits the label 5 to make the middle of the label 5 bulge upward. A horizontal groove 26 is respectively arranged at both ends of the placement groove 25. When the loading manipulator 4 moves above the placement groove 25, the horizontal groove 26 is aligned with the negative pressure suction cup 40 of the loading manipulator 4.

[0074] At least one embodiment provides a labeling method for a full-automatic labeling machine, characterized in that the labeling method includes:

[0075] The label feeding device 2 drives the label 5 to move towards the conveyor belt 1, so that the middle of the label 5 is in a convex shape. The setting of the placement groove 25 makes the middle of the label 5 bulge upward, while both ends are horizontally arranged; the loading manipulator 4 is adapted to suck the label 5 by negative pressure to first adhere both ends of the label 5 to the surface of the PCBA circuit board 6. At this time, the middle of the label 5 bulges upward; when the negative pressure suction cup 40 sucks the label 5, the negative pressure suction cup 40 sucks the horizontal areas at both ends of the label 5; when the negative pressure suction cup 40 moves above the surface of the PCBA circuit board 6 and places the label 5, first make both ends of the label 5 contact and adhere to the surface of the PCBA circuit board 6. The pressure roller 30 of the labeling device 3 rolls from the middle of the label 5 to both ends in sequence. The pressure roller 30 pushes from the middle to both ends of the label. In this way, the bubbles that might have formed in the label 5 will escape from both sides of the two arches respectively, and no bubbles will be formed on the label, ensuring the integrity of the two-dimensional code on the label during subsequent circulation; so that the adhesion parts of both ends of the label 5 and the PCBA circuit board 6 are in folds. After the left and right sides of the label are compacted respectively, the left and right arches will respectively form a fold at both ends of the label. This fold will form an expansion buffer area during the subsequent heating process of the PCBA board, avoiding damage to the label due to stress.

[0076] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0077] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless explicitly indicated in the text. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0078] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic labeling machine for PCBA production, characterized in that, Including: A conveyor belt (1), which is adapted to drive the PCBA circuit board (6) to move horizontally; A label feeding device (2), which is arranged on one side of the conveyor belt (1) and is adapted to support the label (5); A labeling device (3), which is arranged above the conveyor belt (1); A loading manipulator (4), which is arranged above the conveyor belt (1); Wherein, the label feeding device (2) drives the label (5) to move towards the conveyor belt (1) so that the middle part of the label (5) is convex; The loading manipulator (4) is adapted to adsorb the label (5) by negative pressure to first adhere both ends of the label (5) to the surface of the PCBA circuit board (6); The pressure roller (30) of the labeling device (3) rolls from the middle part of the label (5) towards both ends in sequence so that the joints between both ends of the label (5) and the PCBA circuit board (6) are wrinkled; The label feeding device (2) includes: a fixing plate (21), on both sides of which in the length direction are vertically arranged two support plates (22); A label feeding disc (23) slidably arranged on the side walls of the support plates (22), and the two label feeding discs (23) are arranged in an upper-lower offset manner; A driving gear disc (24), which is rotatably arranged on the side walls of the support plates (22) and meshes with the two label feeding discs (23); Wherein, the driving gear disc (24) rotates forward and backward so that one of the label feeding discs (23) moves towards the conveyor belt (1); A plurality of placing grooves (25) are formed along the length direction on the label feeding disc (23), and the depth of the opening of the placing grooves (25) gradually deepens from the middle part towards both ends; One horizontal groove (26) is respectively arranged at both ends of the placing groove (25). When the loading manipulator (4) moves above the placing groove (25), the horizontal groove (26) is aligned with the negative pressure suction cup (40) of the loading manipulator (4); A plurality of through holes (27) are formed on the bottom wall of the placing groove (25), and the plurality of through holes (27) are respectively arranged in the middle part of the placing groove (25) and at both ends close to the horizontal groove (26); A linear rack (29) adapted to the driving gear disc (24) is arranged on the side wall of the label feeding disc (23), and the two linear racks (29) are arranged oppositely; A plurality of support rollers (28) are evenly distributed on the surface of the fixing plate (21), and the support rollers (28) are adapted to abut against one of the linear racks (29) located below; 2. The fully automatic labeling machine for PCBA production according to claim 1, characterized in that A positioning device (10) is arranged in a lifting manner at the labeling station of the conveyor belt (1), and the positioning device (10) is adapted to limit the horizontal movement of the PCBA circuit board (6); 3. The fully automatic labeling machine for PCBA production according to claim 2, characterized in that The positioning device (10) includes: a positioning block (101), on the side wall of which is provided a lifting cylinder; A supporting plate (102), which is vertically fixed at the end of the piston rod of the lifting cylinder; Adjusting cylinders (103), the two adjusting cylinders (103) are respectively arranged on both sides of the supporting plate (102), and a limiting member (104) is arranged at the end of the piston rod of each adjusting cylinder (103), and the limiting member (104) is adapted to clamp the PCBA circuit board (6) from both sides.

4. The full-automatic labeling machine for PCBA production according to claim 3, wherein A plurality of suction cups (105) are arranged in a matrix on the supporting plate (102), the suction cups (105) are communicated with a negative pressure air pump, and the suction cups (105) are adapted to negatively adsorb the bottom wall of the PCBA circuit board (6).

5. A labeling method for a fully automatic labeling machine, characterized in that, Using the full-automatic labeling machine for PCBA production according to any one of claims 1-4, the labeling method includes: The label feeding device (2) drives the label (5) to move towards the conveyor belt (1) so that the middle of the label (5) is convex; the loading manipulator (4) is adapted to negatively adsorb the label (5) to first adhere both ends of the label (5) to the surface of the PCBA circuit board (6), at this time the middle of the label (5) bulges upward; the pressure roller (30) of the labeling device (3) rolls from the middle of the label (5) towards both ends in sequence so that the adhesion parts of both ends of the label (5) and the PCBA circuit board (6) are wrinkled.

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