Turnover conveying mechanism for laser etching of front and back surfaces of circuit board

Abstract

The utility model discloses a turnover conveying mechanism for laser etching of front and back surfaces of a circuit board. The turnover conveying mechanism comprises a track base and a circuit board conveying line, the track base comprises a track side plate and a connecting base plate; the circuit board conveying line comprises supporting conveying parts and a clamping and overturning part arranged between the two supporting conveying parts. The supporting conveying part comprises two supporting guide rails which are arranged in a spaced mode, the clamping turnover part comprises two turnover transfer rails, any rail side plate is provided with a turnover driving source which is in transmission connection with pivots of the turnover transfer rails, and the opposite wall faces of the two turnover transfer rails are each provided with two circulating conveying material belts which are arranged in a spaced mode and form a clamping gap. The circuit board turnover device can realize automatic turnover in the circuit board conveying process, and meets the double-sided operation requirement of circuit board turnover. And a contact type transmission design mode is adopted, so that a power source can be separated, and turnover two-way contact type transmission matching is easy to realize. And the supporting and conveying parts at the two ends are synchronously linked, so that the operation is more reliable and stable.

Description

Technical Field

[0001] This utility model relates to a flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board, and belongs to the technical field of circuit board printing conveyor devices. Background Technology

[0002] PCB, or Printed Circuit Board, is a crucial component of electronic devices, and its manufacturing process demands extremely high precision. Without compromising the integrity of the board, various clearly visible codes, graphics, parameters, model numbers, and QR codes must be precisely engraved. To meet this requirement, laser marking machines specifically designed for PCBs have emerged. With continuous technological advancements, fully automatic laser marking machines have gradually become a new trend in the industry.

[0003] Laser marking technology uses high-energy-density lasers to precisely irradiate PCB boards, causing the surface material to vaporize or change color, thus forming a durable mark. This non-contact processing method can produce highly clear QR codes in extremely small spaces, combining high precision and high quality. Furthermore, laser marking has excellent durability, unaffected by high or low temperatures, pH changes, or external friction, and requires no chemicals, making it safe and harmless to personnel and the environment. In the field of PCB laser marking, UV laser marking and CO2 laser marking are highly regarded for their low heat-affected zone, excellent processing results, high precision, and high speed, and have become the preferred technologies for PCB surface marking.

[0004] Currently, circuit board laser engraving equipment includes two types: fixed laser engraving carriers and conveyor lines. Fixed carriers require frequent loading and unloading operations, which are relatively unsafe. Conveyor lines only meet the needs of single-sided conveying. When flipping the PCB, the output PCB needs to be flipped and fed back into the conveyor line, resulting in low production efficiency and high intensity of external flipping and secondary feeding operations. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the existing technology and to solve the problem of low production efficiency caused by the inability of existing PCB laser engraving to meet the requirements of flipping during automated conveying. This invention proposes a flipping conveying mechanism for laser engraving on both sides of PCBs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A flipping conveyor mechanism for laser engraving on the front and back of a circuit board includes a track base and a circuit board conveyor line disposed on the track base;

[0008] The track base includes two track side plates spaced apart and two connecting plates spaced apart connecting the two track side plates;

[0009] The circuit board conveying line includes two support conveying parts that are correspondingly arranged on the connecting base plate and a clamping and flipping part arranged between the two support conveying parts;

[0010] The supporting conveying part includes two support guide rails spaced apart from each other, and the clamping and flipping part includes two flipping rails arranged opposite each other and pivotally connected to the side plates of the rails. Each side plate of the rails is provided with a flipping drive source that is drivenly connected to the pivot of the flipping rail. Two circulating conveyor belts are respectively provided on the opposite walls of the two flipping rails, and a clamping gap for clamping the circuit board is formed between the two circulating conveyor belts.

[0011] Preferably, at least one of the circulating conveyor belts on the tilting rail has a passive wheel extending through the tilting rail toward the rail side plate;

[0012] The track side plate is provided with a contact drive source for contact transmission with the passive wheel.

[0013] Preferably, the contact drive source includes a telescopic drive unit disposed on the track side plate and a rotary power unit disposed on the telescopic end of the telescopic drive unit. The rotary power unit is provided with a contact transmission unit that penetrates the track side plate for contacting the driven wheel.

[0014] Preferably, the two circulating conveyor belts of the tilting rail are respectively provided with the driven wheels, and the two driven wheels are centrally symmetrically distributed relative to the pivot end of the tilting rail;

[0015] The track side plate is provided with a contact drive source for switching and engaging with the two passive wheels.

[0016] Preferably, any of the track side plates is provided with a horizontal position detection sensor and two horizontal position limiting protrusions spaced apart on the side wall facing the flipping rail. The flipping rail is provided with a sensed end for cooperating with the horizontal position detection sensor and limiting blocks for flipping both ends to cooperate with the horizontal position limiting protrusions.

[0017] Preferably, the flipping drive source includes a flipping motor, which is synchronously connected to the pivots of the two flipping rails via a coupling structure.

[0018] Preferably, the two supporting guide rails of the supporting conveying section are respectively provided with supporting circulating material belts on their opposite walls, and at least one of the supporting circulating material belts is connected to a rotary drive source.

[0019] Preferably, the rotary drive source of any of the supporting conveyor sections is synchronously connected to the two supporting circulating material belts via a coupling.

[0020] Preferably, any one of the track side plates is provided with a linkage frame connecting the two support conveying parts, the rotary drive source is disposed on the linkage frame, and the rotary drive source is synchronously driven connected to the coupling rods of the two support conveying parts.

[0021] Preferably, any of the connecting base plates is provided with a blocking and releasing limit part for blocking or releasing the circuit board.

[0022] The beneficial effects of this utility model are mainly reflected in:

[0023] 1. It can realize automated flipping during circuit board transportation, meeting the double-sided operation requirements of circuit board flipping.

[0024] 2. The use of a contact transmission design allows for the separation of power sources, facilitating bidirectional contact transmission coordination.

[0025] 3. The flipping and synchronous linkage, as well as the synchronous linkage of the conveyor support at both ends, make the operation more reliable and stable.

[0026] 4. The overall design is simple and ingenious, and the operation is smooth and efficient. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the flipping and conveying mechanism for laser engraving on the front and back sides of a circuit board, which is a utility model.

[0029] Figure 2 This is an exploded structural diagram of the flipping and conveying mechanism for laser engraving on the front and back sides of a circuit board, which is a utility model.

[0030] Figure 3 This is a schematic diagram of the structure of the flipping and conveying mechanism for laser engraving on the front and back of a circuit board, which is in use according to this utility model.

[0031] Figure 4 This is a schematic diagram of the flipping conveyor in the flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board, which is a structural diagram of the flipping carrier rail of this utility model.

[0032] Figure 5 This is a schematic diagram of the flipping rail in the flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board, which is another perspective of the structure of this utility model.

[0033] Figure 6 This is a schematic diagram of the contact drive source in the flipping and conveying mechanism for laser engraving on the front and back sides of a circuit board, which is a utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0036] This utility model provides a flipping and conveying mechanism for laser engraving on the front and back sides of a circuit board, such as... Figures 1 to 6 As shown, it includes a track base 100 and a circuit board conveyor line 200 disposed on the track base 100.

[0037] The track base 100 includes two track side plates 1 spaced apart and two connecting plates 2 spaced apart connecting the two track side plates 1.

[0038] The circuit board conveyor line 200 includes two support conveying parts 3 that are correspondingly arranged on the connecting base plate and a clamping and flipping part 4 that is arranged between the two support conveying parts 3.

[0039] The support conveying part 3 includes two support guide rails 31 arranged at intervals, and the clamping and flipping part 4 includes two flipping load rails 5 arranged opposite each other and pivotally connected to the track side plate 1. Each track side plate 1 is provided with a flipping drive source 6 that is driven by the pivot of the flipping load rail 5. Two circulating conveying belts 51 arranged at intervals are respectively provided on the opposite wall surfaces of the two flipping load rails 5. A clamping gap 50 for clamping the circuit board 300 is formed between the two circulating conveying belts.

[0040] Detailed implementation process and principle explanation:

[0041] The circuit board 300 is supported on the support conveyor 3 and pushed and conveyed. After the circuit board 300 enters the clamping gap 50, it is conveyed to the position by the circulating conveyor belt 51. When the circuit board 300 is in position, the flipping drive source 6 drives the pivot of the flipping rail 5 to rotate, thereby realizing the online conveying and flipping of the circuit board.

[0042] After the flipping operation is completed, the material can be output in any direction in both directions by the circulating conveyor belt 51 and unloaded through the support conveyor 3, thus meeting the requirements of online flipping operation.

[0043] In one specific embodiment, at least one circulating conveyor belt 51 on the tilting rail 5 has a passive wheel 52 extending through the tilting rail toward the track side plate; the track side plate 1 is provided with a contact drive source 7 for contact transmission with the passive wheel.

[0044] Specifically, the circulating conveyor belt 51 requires a power source. Since it has a tilting displacement, mounting a power source on the tilting rail 5 would cause problems such as difficulty in wiring. The design of setting the contact drive source 7 on the side plate 1 of the rail is adopted, which can achieve contact with the passive wheel 52, thereby meeting the requirements of contact transmission.

[0045] In one specific embodiment, such as Figure 6 As shown, the contact drive source 7 includes a telescopic drive unit 71 disposed on the track side plate and a rotary power unit 72 disposed on the telescopic end of the telescopic drive unit 71. The rotary power unit is provided with a contact transmission unit that penetrates the track side plate for contacting the driven wheel.

[0046] Specifically, the telescopic drive unit 71 can drive the rotary power unit 72 to achieve linear displacement. After extension, the contact transmission part of the rotary power unit 72 contacts and drives the driven wheel 52. When a flipping operation is required, the two parts are separated by linear retraction, so as not to interfere with the flipping operation of the circuit board.

[0047] In one specific embodiment, the two circulating conveyor belts of the flipping rail 5 are respectively provided with passive wheels 52, and the two passive wheels are centrally symmetrically distributed relative to the pivot end of the flipping rail; a contact drive source is provided on the side plate of the rail for switching and cooperating with the two passive wheels.

[0048] This means that only one contact drive source is needed to enable the passive wheel 52 to engage in either the forward or reverse flipping of the tilting rail 5. This ingenious design effectively controls costs. There is no need to perform a flipping operation followed by a flipping contact drive.

[0049] In one specific embodiment, a horizontal position detection sensor 11 and two horizontal position limiting protrusions 12 spaced apart are provided on the side wall of any track side plate 1 facing the flipping rail. The flipping rail 5 is provided with a sensed end 53 for cooperating with the horizontal position detection sensor and a limiting block 54 for flipping both ends to cooperate with the horizontal position limiting protrusions.

[0050] Specifically, the limit block 54 can cooperate with the horizontal limit protrusion 12 at both ends of a 180° stroke to ensure its horizontality after flipping. The position is monitored by the sensing end 53 and the horizontal detection sensor 11, and the trigger response is triggered when the position is reached.

[0051] In one specific embodiment, the flip drive source 6 includes a flip motor 61, which is synchronously connected to the pivots of two flip rails via a coupling structure 62.

[0052] Normally, the circuit board can be inserted into the clamping gap 50 to achieve synchronization of the two flipping rails. However, in order to protect the circuit board and to ensure that the position of the flipping rails is consistent when there is no material, a flipping motor 61 is used to connect and transmit the two flipping rails synchronously through a coupling structure 62.

[0053] Specifically, refer to Figure 2 and Figure 3 As shown, the rotating shaft of the flipping motor 61 is connected to a pivot for transmission, and its rotating shaft is then connected to another pivot for synchronous transmission via a transmission shaft, thus achieving the requirement of mechanical synchronous connection. The design of the coupling structure 62 is prior art, and as long as it meets the requirement of synchronous transmission structure for flipping rails, it is within the protection scope of this case.

[0054] In one specific embodiment, the two supporting guide rails 31 of the supporting conveying section 3 are respectively provided with supporting circulating material belts 32 on their opposite wall surfaces, and at least one supporting circulating material belt is connected to a rotary drive source 8.

[0055] Specifically, the general support conveying unit 3 can achieve the support and guidance requirements without power through the support guide rail 31, while the design of the support circulating material belt 32 can achieve active power conveying through the rotation drive source 8, thus realizing automated material supply and unloading, and efficient and smooth operation.

[0056] In one specific embodiment, the rotation drive source 8 of any support conveyor is synchronously connected to two support circulating material belts via a coupling 81.

[0057] This allows the two supporting circulating material belts 32 of the same supporting conveyor section 3 to operate synchronously.

[0058] In one specific embodiment, any track side plate 1 is provided with a linkage frame 82 connecting two support conveying parts, a rotary drive source 8 is provided on the linkage frame 82, and the rotary drive source is synchronously connected to the coupling rod 81 of the two support conveying parts.

[0059] Specifically, the rotary drive source 8 is mounted on the linkage frame 82, and the two support conveying parts 3 are synchronously linked through the two coupling rods 81, which makes the control more reliable and saves the cost of the drive source.

[0060] In one specific embodiment, any connecting base plate is provided with a blocking and limiting part 9 for stopping or releasing the circuit board. This blocking and limiting part only needs to interfere with the operation of the circuit board, and generally adopts a blocking arm with lifting displacement or yaw displacement. As long as the mechanism meets the requirements of positioning to stop and releasing passage, it is within the protection scope of this case.

[0061] As described above, this invention enables automated flipping during circuit board transport, meeting the double-sided operation requirements for circuit board flipping. The contact-type transmission design allows for the separation of power sources, facilitating bidirectional contact transmission coordination during flipping. Synchronous linkage between the flipping and the conveyor supports at both ends ensures more reliable and stable operation. The overall design is simple and ingenious, resulting in smooth and efficient operation.

[0062] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0063] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board, characterized in that: Includes a track base and a circuit board delivery line disposed on the track base; The track base includes two track side plates spaced apart and two connecting plates spaced apart connecting the two track side plates; The circuit board conveying line includes two support conveying parts that are correspondingly arranged on the connecting base plate and a clamping and flipping part arranged between the two support conveying parts; The supporting conveying part includes two support guide rails spaced apart from each other, and the clamping and flipping part includes two flipping rails arranged opposite each other and pivotally connected to the side plates of the rails. Each side plate of the rails is provided with a flipping drive source that is drivenly connected to the pivot of the flipping rail. Two circulating conveyor belts are respectively provided on the opposite walls of the two flipping rails, and a clamping gap for clamping the circuit board is formed between the two circulating conveyor belts.

2. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 1, characterized in that: At least one of the circulating conveyor belts on the tilting rail has a passive wheel extending through the tilting rail toward the rail side plate; The track side plate is provided with a contact drive source for contact transmission with the passive wheel.

3. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 2, characterized in that: The contact drive source includes a telescopic drive unit disposed on the track side plate and a rotary power unit disposed on the telescopic end of the telescopic drive unit. The rotary power unit is provided with a contact transmission unit that penetrates the track side plate and is used to contact the driven wheel.

4. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 2, characterized in that: The two circulating conveyor belts of the tilting rail are respectively equipped with the passive wheels, and the two passive wheels are centrally symmetrically distributed relative to the pivot end of the tilting rail; The track side plate is provided with a contact drive source for switching and engaging with the two passive wheels.

5. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 1, characterized in that: A horizontal position detection sensor and two spaced-apart horizontal position limiting protrusions are provided on the side wall of any of the track side plates facing the flipping rail. The flipping rail is provided with a sensed end for cooperating with the horizontal position detection sensor and limiting blocks for flipping both ends to cooperate with the horizontal position limiting protrusions.

6. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 1, characterized in that: The flipping drive source includes a flipping motor, which is synchronously connected to the pivots of the two flipping rails via a coupling structure.

7. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to any one of claims 1 to 6, characterized in that: The two supporting guide rails of the supporting conveying section are respectively provided with supporting circulating material belts on their opposite walls, and at least one of the supporting circulating material belts is connected to a rotary drive source.

8. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 7, characterized in that: The rotary drive source of any of the supporting conveyor units is synchronously connected to the two supporting circulating material belts via a coupling.

9. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 8, characterized in that: Each of the track side plates is provided with a linkage frame connecting the two support conveying parts, the rotary drive source is disposed on the linkage frame, and the rotary drive source is synchronously driven connected to the coupling rods of the two support conveying parts.

10. The flipping conveyor mechanism for laser engraving on the front and back sides of a circuit board according to claim 1, characterized in that: Each of the aforementioned connecting base plates is provided with a blocking and release limiting part for blocking or releasing the circuit board.

Images