CN216470611U

CN216470611U - PCB conveying mechanism and PCB pin shearing device

Info

Publication number: CN216470611U
Application number: CN202122895236.4U
Authority: CN
Inventors: 雍君; 谢卫
Original assignee: Jiangsu Chuanglian Technology Co ltd
Current assignee: Jiangsu Chuanglian Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-10
Anticipated expiration: 2031-11-24

Abstract

The utility model relates to the technical field of PCB production, in particular to a PCB conveying mechanism and a PCB pin shearing device. The PCB conveying mechanism comprises a feeding conveying line, an overturning conveying line and a discharging conveying line which are sequentially and independently arranged along the conveying direction of a PCB, wherein the overturning conveying line comprises a conveying assembly and an overturning assembly, the conveying assembly can clamp and fix the PCB and can convey the PCB conveyed by the feeding conveying line to the discharging conveying line, and the overturning assembly can drive the conveying assembly to overturn so that the back face of the PCB is arranged upwards. The PCB board is cut foot device and is passed through above-mentioned PCB board conveying mechanism of application, can carry out automatic turn-over to the PCB board of carrying, and the foot mechanism of cutting on the PCB board is cut foot device and is sheared the pin on the PCB board back of being convenient for, need not the manual work and carries out the turn-over to the PCB board and cut, practices thrift the human cost, and the operation is also more convenient.

Description

PCB conveying mechanism and PCB pin shearing device

Technical Field

The utility model relates to the technical field of PCB production, in particular to a PCB conveying mechanism and a PCB pin shearing device.

Background

After the pins of the electronic components on the PCB are soldered, the overlong pins need to be cut off. Pins in the process of electronic components are generally cut off by tools such as inclined-jaw pliers and the like, but the production efficiency is low and the error rate is high.

Along with the development of technology, people have developed automatic PCB board and have cut foot device, because the pin of electronic components overlength is located the back of PCB board, cut the foot device when PCB board and carry and come the PCB board of waiting to cut the foot after, need the manual work to carry out the turn-over back with the PCB board, carry out shearing work again, extravagant manpower increases the human cost to make the operation complicated.

Therefore, it is desirable to provide a PCB conveying mechanism and a PCB trimming apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PCB conveying mechanism which can automatically turn over a conveyed PCB, save labor cost and is convenient and fast to operate.

Another object of the present invention is to provide a PCB trimming device, which can automatically turn over a conveyed PCB, so that a trimming mechanism can trim the pins on the back of the PCB, thereby saving labor cost and facilitating operation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a PCB board conveying mechanism, includes along PCB board direction of delivery independently the feeding transfer chain of arranging in proper order, upset transfer chain and ejection of compact transfer chain, the upset transfer chain includes:

the conveying assembly can clamp and fix the PCB and can convey the PCB conveyed by the feeding conveying line to the discharging conveying line; and

the overturning assembly is configured to drive the conveying assembly to overturn so that the back of the PCB is arranged upwards.

Preferably, the conveying assembly comprises:

the two groups of fixing pieces are respectively arranged on two sides of the PCB in the width direction, and each group of fixing pieces comprises an upper layer fixing plate and a lower layer fixing plate which are arranged in the vertical direction; and

the conveying belt comprises an upper conveying belt and a lower conveying belt which are arranged in the up-down direction, the upper conveying belt is arranged on the upper fixing plate, and the lower conveying belt is arranged on the lower fixing plate;

the upper layer conveying belt and the lower layer conveying belt can clamp and convey the PCB together.

Preferably, the upper layer conveyor belt and the lower layer conveyor belt have the same conveying direction with the contact side of the PCB.

Preferably, the upper layer conveying belt comprises a first belt and a plurality of rotating rollers, the rotating rollers are arranged on the upper layer fixing plate at intervals, the rotating rollers tension the first belt together, and two ends of the first belt are adjacent to the feeding conveying line and the discharging conveying line respectively;

the lower-layer conveying belt comprises a driving motor, a driving roller, a second belt and driven rollers, the output end of the driving motor is connected with the driving roller, the driving roller and the driven rollers are arranged at intervals, two groups of driven rollers are arranged at intervals along the conveying direction of the PCB, the driving roller and the driven rollers tension the second belt together, and two ends of the second belt are adjacent to the feeding conveying line and the discharging conveying line respectively;

the first belt and the second belt can clamp and convey the PCB together.

Preferably, the conveying assembly further comprises:

the linear driving piece can drive the upper fixing plate to move towards the direction of the lower fixing plate.

Preferably, the distance between the two groups of fixing pieces along the width direction of the PCB is adjustable.

Preferably, the flipping unit includes:

a rotating electric machine; and

the synchronous belt transmission piece, the rotating electrical machines can drive synchronous belt transmission piece rotates and then drives two sets of the mounting rotates.

Preferably, the feed transfer line comprises:

the two groups of feeding fixing plates are respectively arranged on two sides of the PCB in the width direction; and

the feeding conveying belts are arranged on the feeding fixing plates, the tail ends of the feeding conveying belts are adjacent to the conveying assemblies, and the feeding conveying belts are two groups of the feeding conveying belts and convey the PCB together.

Preferably, the discharge conveyor line comprises:

two groups of discharging fixing plates are respectively arranged on two sides of the PCB in the width direction; and

and the discharging conveying belts are arranged on the discharging fixing plates, the starting ends of the discharging conveying belts are adjacent to the conveying assembly, and the discharging conveying belts are used for conveying the PCB together.

A PCB foot shearing device comprises a foot shearing mechanism and the PCB conveying mechanism, wherein the foot shearing mechanism is configured to shear pins on the back of the PCB conveyed by the conveying assembly.

The utility model has the beneficial effects that:

the utility model provides a PCB conveying mechanism, which is characterized in that a turnover assembly is arranged, the turnover assembly can drive the conveying assembly to turn over, so that the back of a PCB is arranged upwards, pins on the back of the PCB can be conveniently cut, when overlong pins on the back of the PCB are cut off, the PCB is turned over to perform operation of other procedures, the PCB does not need to be turned over manually, the labor cost is saved, and the operation is convenient.

The utility model also provides a PCB pin cutting device, by applying the PCB conveying mechanism, the conveyed PCB can be automatically turned, so that the pin on the back of the PCB can be conveniently cut by the pin cutting mechanism on the PCB pin cutting device, the PCB does not need to be manually turned and cut, the labor cost is saved, and the operation is more convenient.

Drawings

Fig. 1 is a schematic structural diagram of a PCB conveying mechanism provided in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a turnover conveyor line provided by an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a material-containing state of the turnover conveying line according to the embodiment of the present invention.

In the figure:

100. a PCB conveying mechanism; 200. a PCB board;

1. a feed conveyor line; 11. a feeding fixing plate; 12. a feed conveyor belt;

2. turning over the conveying line; 21. a delivery assembly; 211. a fixing member; 2111. an upper fixing plate; 2112. a lower fixing plate; 212. a conveyor belt; 2121. an upper layer conveyor belt; 21211. a first belt; 21212. a rotating roller; 2122. a lower layer conveyor belt; 21221. a second belt; 21222. a driven roller; 21223. a drive motor; 21224. a drive roll; 22. a turnover assembly; 221. a rotating electric machine; 222. a synchronous belt transmission piece;

3. a discharging conveying line; 31. a discharge fixing plate; 32. and (7) a discharging conveyer belt.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a PCB board pin shearing device which is mainly used for shearing off overlong pins of electronic components on the back surface of a PCB board. The PCB pin shearing device mainly comprises a PCB conveying mechanism and a pin shearing mechanism, wherein the pin shearing mechanism is located above the PCB conveying mechanism, the PCB conveying mechanism is used for conveying PCBs, and the pin shearing mechanism is used for shearing overlong pins on the back of the conveyed PCBs.

In prior art, because the pin of electronic components overlength is located the back of PCB board, after PCB board conveying mechanism carried the PCB board of waiting to cut the foot, need the manual work to carry out the turn-over back with the PCB board, the work is cut to rethread foot cutting mechanism or manual work, and extravagant manpower increases the human cost to make the operation complicated.

In order to solve the above problem, as shown in fig. 1, this embodiment provides a PCB conveying mechanism 100, which can convey a PCB 200 to be processed, where the PCB conveying mechanism 100 includes a feeding conveying line 1, an overturning conveying line 2, and a discharging conveying line 3 that are sequentially and independently arranged along a conveying direction (X direction in the figure) of the PCB 200, where the overturning conveying line 2 includes a conveying module 21 and an overturning module 22, the conveying module 21 can clamp and fix the PCB 200, and can convey the PCB 200 conveyed by the feeding conveying line 1 to the discharging conveying line 3, and the overturning module 22 can drive the conveying module 21 to overturn, so that a back surface of the PCB 200 faces upward. After feeding transfer chain 1 carried PCB board 200 for conveyor components 21, upset subassembly 22 drive upset subassembly 22 upset, be convenient for cut the pin at the back of PCB board 200 of foot mechanism and cut, after the excision pin, upset subassembly 22 drives conveyor components 21 again and goes back PCB board 200 upset, then conveyor components 21 carries PCB board 200 after will cutting again and gives material transfer chain 3, need not the manpower and carries out the turn-over to PCB board 200, practice thrift the human cost, the simple operation.

Explaining the concrete structure of the feeding conveyor line 1 with reference to fig. 1, as shown in fig. 1, the feeding conveyor line 1 includes two sets of feeding fixing plates 11 and feeding conveyor belts 12, the two sets of feeding fixing plates 11 are respectively disposed on two sides of the PCB 200 in the width direction (Y direction in the figure), the two sets of feeding fixing plates 11 are respectively provided with feeding conveyor belts 12, the ends of the feeding conveyor belts 12 are adjacent to the conveying assemblies 21, and the two sets of feeding conveyor belts 12 jointly convey the PCB 200. Through setting up two sets of feeding conveyer belt 12 and carry PCB board 200 jointly, guarantee that feeding conveyer line 1 carries PCB board 200 steadily more steadily.

Preferably, the distance between the two sets of feeding fixing plates 11 along the Y direction is adjustable, so that the feeding conveyor line 1 can match and convey the PCB boards 200 with different widths. Specifically, one of the feeding fixing plates 11 can be fixed on a rack of the PCB trimming device, the other feeding fixing plate 11 can be slidably disposed on an adjusting rod of the rack along the Y direction, and after the adjustment of the distance between the two feeding fixing plates 11 is completed, the slidably adjustable feeding fixing plate 11 and the adjusting rod can be fixed together by fasteners such as bolts.

Explaining the concrete structure of ejection of compact transfer chain 3 in conjunction with fig. 1, as shown in fig. 1, ejection of compact transfer chain 3 includes two sets of ejection of compact fixed plates 31 and ejection of compact conveyer belt 32, and two sets of ejection of compact fixed plates 31 set up respectively in the both sides of PCB board 200 width direction (Y direction in the picture), all are provided with ejection of compact conveyer belt 32 on two sets of ejection of compact fixed plates 31, and the top of ejection of compact conveyer belt 32 is adjacent with conveyor component 21, and PCB board 200 is carried jointly to two sets of ejection of compact conveyer belt 32. Through setting up two sets of ejection of compact conveyer belts 32 and carry PCB board 200 jointly, guarantee ejection of compact transfer chain 3 and carry PCB board 200 steadily more steadily stably.

Preferably, the distance between the two groups of discharging fixing plates 31 in the Y direction is adjustable, so that the discharging conveying lines 3 can match and convey the PCB boards 200 with different widths. Particularly, one of them group of ejection of compact fixed plate 31 can be fixed in the frame of PCB board pin shearing device, and another group of ejection of compact fixed plate 31 can slide along the Y direction and set up on the regulation pole of frame, and after the interval between two sets of ejection of compact fixed plates 31 was adjusted and is accomplished, fasteners such as accessible bolts fixed the ejection of compact fixed plate 31 and the regulation pole of slidable regulation mutually.

The specific structure of the conveying assembly 21 is described with reference to fig. 1, as shown in fig. 1, the conveying assembly 21 includes two sets of fixing members 211 and conveying belts 212, the two sets of fixing members 211 are respectively disposed on two sides of the PCB 200 in the width direction (Y direction in the figure), the conveying belts 212 are disposed on the two sets of fixing members 211, two ends of the conveying belts 212 are respectively adjacent to the feeding conveying belt 12 and the discharging conveying belt 32, the two sets of conveying belts 212 jointly convey the PCB 200, and it is ensured that the conveying belts 212 convey the PCB 200 more stably.

Preferably, the distance between the two sets of fixing members 211 along the width direction (Y direction in the drawing) of the PCB 200 is adjustable. Thereby enabling the conveyor assembly 21 to match the conveyance of PCB boards 200 of different widths. Specifically, one set of the fixing members 211 may be fixed to a frame of the PCB trimming apparatus, and the other set of the fixing members 211 may be slidably disposed on an adjusting rod of the frame along the Y direction, and after the distance between the two sets of the fixing members 211 is adjusted, the fixing members 211 that are slidably adjustable may be fixed to the adjusting rod by fasteners such as bolts.

Specifically, as shown in fig. 2, each fixing member 211 includes an upper fixing plate 2111 and a lower fixing plate 2112 arranged in the up-down direction, the conveying belt 212 includes an upper conveying belt 2121 and a lower conveying belt 2122 arranged in the up-down direction, the upper fixing plate 2111 is provided with the upper conveying belt 2121, the lower fixing plate 2112 is provided with the lower conveying belt 2122, and the upper conveying belt 2121 and the lower conveying belt 2122 can jointly clamp and convey the PCB board 200. Through setting up upper conveyer belt 2121 and lower floor's conveyer belt 2122, not only can realize the transport to PCB board 200, can also guarantee that PCB board 200 is more firm fixedly between upper conveyer belt 2121 and lower floor's conveyer belt 2122, prevent that upset subassembly 22 from conveying the in-process of subassembly 21 in the upset, PCB board 200 drops on conveyer belt 212.

It should be noted that, in this embodiment, the upper conveyor belt 2121 and the lower conveyor belt 2122 are conveyed in the same direction on the side contacting the PCB 200, so as to ensure that the sides of the PCB 200 clamped by the upper conveyor belt 2121 and the lower conveyor belt 2122 advance in the same direction.

In this embodiment, as shown in fig. 2, the upper conveyor belt 2121 has no power source, and the upper conveyor belt 2121 includes a first belt 21211 and a plurality of rotating rollers 21212, wherein the plurality of rotating rollers 21212 are spaced apart from each other on the upper fixing plate 2111, the plurality of rotating rollers 21212 jointly tension the first belt 21211, and both ends of the first belt 21211 are respectively adjacent to the feeding conveyor belt 12 and the discharging conveyor belt 32. When the lower conveyer belt 2121 drives the PCB 200 to transport, the PCB 200 can synchronously drive the plurality of rotating rollers 21212 and the first belt 21211 to rotate, so as to ensure the stable clamping and transportation of the PCB 200 by the upper conveyer belt 2121 and the lower conveyer belt 2122. In other embodiments, the upper conveyer belt 2121 and the lower conveyer belt 2122 are both provided with a power source, or the upper conveyer belt 2121 may be provided with a power source and the lower conveyer belt 2122 may not have a power source, as long as the clamping and conveying of the PCB 200 by the upper conveyer belt 2121 and the lower conveyer belt 2122 can be ensured.

As shown in fig. 2, in the present embodiment, the lower conveyor belt 2122 is provided with a power source, the lower conveyor belt 2122 includes a driving motor 21223, a driving roller 21224, a second belt 21221 and a driven roller 21222, an output end of the driving motor 21223 is connected to the driving roller 21224, the driven roller 21222 and the driving roller 21224 jointly tension the second belt 21221, two ends of the second belt 21221 are respectively adjacent to the feeding conveyor belt 12 and the discharging conveyor belt 32, the driving motor 21223 drives the driving roller 21224 to rotate, the driving roller 21224 drives the driven roller 21222 and the second belt 21221 to synchronously rotate, so that the second belt 21221 drives the PCB board 200 to move, and the PCB board 200 further drives the first belt 21211 to move, so that the first belt 21211 and the second belt 21221 can jointly clamp and convey the PCB board 200. The upper conveyor belt 2121 and the lower conveyor belt 2122 only need one power source, namely a driving motor 21223, so that the cost is further saved. Further, as shown in fig. 2, the driven roller 21222 is provided in plurality, the driven rollers 21222 are arranged at intervals and tension the second belt 21221 in common with the driving roller 21224, and by providing the driven rollers 21222 in plurality, the stability of the conveyance of the second belt 21221 can be ensured.

It should be noted that, in the present embodiment, the second belt 21221 is level with the heights of the feeding conveyer belt 12 and the discharging conveyer belt 32, so as to ensure that the PCB boards 200 conveyed on the feeding conveyer belt 12 can be conveyed onto the second belt 21221, and the PCB boards 200 on the second belt 21221 can be conveyed onto the discharging conveyer belt 32. In addition, the feeding conveyor belt 12 and the discharging conveyor belt 32 have the same structure as the lower conveyor belt 2122, and therefore, the detailed description thereof is omitted.

In order to ensure that the first and

second belts

21211 and 21221 clamp and convey the PCB board 200 more firmly, the conveying assembly 21 further includes a linear driving unit capable of driving the upper fixing plate 2111 to move toward the lower fixing plate 2112 so as to bring the first and

second belts

21211 and 21221 closer to each other. Specifically, when the PCB board 200 conveyed by the feeding conveyor 12 enters the second belt 21221, the linear driving unit drives the upper fixing plate 2111 to move toward the lower fixing plate 2112, thereby ensuring that the first belt 21211 and the second belt 21221 clamp and convey the PCB board 200. When it is desired to transfer the PCB board 200 onto the outfeed conveyor belt 32, the linear drive drives the upper fixing plate 2111 in a direction away from the lower fixing plate 2112 so that the second belt 21221 transfers the PCB board 200 onto the outfeed conveyor belt 32. Specifically, the linear driving element may be a linear driving cylinder or a linear driving motor, and the embodiment does not specifically limit the specific form of the linear driving element.

The specific structure of the turning assembly 22 is described with reference to fig. 1 to 3, as shown in fig. 1 to 3, the turning assembly 22 includes a rotating electrical machine 221 and two sets of synchronous belt transmission members 222, the two sets of synchronous belt transmission members 222 are arranged at intervals along the width direction (Y direction in the figure) of the PCB 200, the output end of the rotating electrical machine 221 is connected to the two sets of synchronous belt transmission members 222, the output ends of the two sets of synchronous belt transmission members 222 are respectively connected to the two sets of fixing members 211, the rotating electrical machine 221 drives the two sets of synchronous belt transmission members 222 to rotate, the two sets of fixing members 211 of the two sets of synchronous belt transmission members 222 can be synchronously driven to rotate, thereby realizing the turning of the conveying assembly 21 by the turning assembly 22. The synchronous belt transmission has the advantages of no sliding during transmission, accurate transmission ratio, compact structure and high transmission efficiency.

The PCB board cutting device provided by the embodiment can automatically turn over the PCB board 200 for conveying by applying the PCB board conveying mechanism 100, the pin on the back of the PCB board 200 is cut by the cutting mechanism on the PCB board cutting device, the manual work is not needed to turn over and cut the PCB board 200, the labor cost is saved, and the operation is more convenient.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a PCB board conveying mechanism which characterized in that includes along PCB board (200) direction of delivery independently the feeding transfer chain (1) of arranging in proper order, upset transfer chain (2) and ejection of compact transfer chain (3), upset transfer chain (2) include:

the conveying assembly (21) can clamp and fix the PCB (200) and can convey the PCB (200) conveyed by the feeding conveying line (1) to the discharging conveying line (3); and

the overturning component (22) is configured to drive the conveying component (21) to overturn so that the back of the PCB (200) is arranged upwards.

2. The PCB board conveying mechanism according to claim 1, wherein the conveying assembly (21) comprises:

two groups of fixing pieces (211) are respectively arranged at two sides of the PCB (200) in the width direction, and each group of fixing pieces (211) comprises an upper-layer fixing plate (2111) and a lower-layer fixing plate (2112) which are arranged in the vertical direction; and

the conveying belt (212) comprises an upper-layer conveying belt (2121) and a lower-layer conveying belt (2122) which are arranged in the vertical direction, the upper-layer conveying belt (2121) is arranged on the upper-layer fixing plate (2111), and the lower-layer conveying belt (2122) is arranged on the lower-layer fixing plate (2112);

the upper layer conveyer belt (2121) and the lower layer conveyer belt (2122) can clamp and convey the PCB (200) together.

3. The PCB conveying mechanism according to claim 2, wherein the upper layer conveyor belt (2121) and the lower layer conveyor belt (2122) have the same conveying direction as the contact side of the PCB (200).

4. The PCB conveying mechanism according to claim 2, wherein the upper layer conveyor belt (2121) comprises a first belt (21211) and a plurality of rotating rollers (21212), the plurality of rotating rollers (21212) are arranged at intervals on the upper layer fixing plate (2111), the plurality of rotating rollers (21212) jointly tension the first belt (21211), and two ends of the first belt (21211) are respectively adjacent to the feeding conveyor line (1) and the discharging conveyor line (3);

the lower-layer conveying belt (2122) comprises a driving motor (21223), a driving roller (21224), a second belt (21221) and a driven roller (21222), the output end of the driving motor (21223) is connected with the driving roller (21224), the driving roller (21224) and the driven roller (21222) are arranged at intervals, the driving roller (21224) and the driven roller (21222) tension the second belt (21221) together, and two ends of the second belt (21221) are adjacent to the feeding conveying line (1) and the discharging conveying line (3) respectively;

the first belt (21211) and the second belt (21221) can jointly clamp and convey the PCB board (200).

5. The PCB board conveying mechanism according to claim 2, wherein the conveying assembly (21) further comprises:

the linear driving piece can drive the upper fixing plate (2111) to move towards the direction of the lower fixing plate (2112).

6. The PCB conveying mechanism according to claim 2, wherein the distance between the two sets of fixing parts (211) along the width direction of the PCB (200) is adjustable.

7. The PCB conveying mechanism according to any one of claims 2 to 6, wherein the turnover assembly (22) comprises:

a rotating electric machine (221); and

synchronous belt drive spare (222), rotating electrical machines (221) can drive synchronous belt drive spare (222) rotate and then drive two sets ofly mounting (211) rotate.

8. The PCB conveying mechanism according to any one of claims 1 to 6, wherein the feeding conveying line (1) comprises:

two groups of feeding fixing plates (11) are respectively arranged on two sides of the PCB (200) in the width direction; and

the feeding conveying belt (12) is arranged in two groups, the feeding conveying belt (12) is arranged on the feeding fixing plate (11), the tail end of the feeding conveying belt (12) is adjacent to the conveying component (21), and the feeding conveying belt (12) is arranged in two groups and conveys the PCB (200) together.

9. The PCB conveying mechanism according to any one of claims 1 to 6, wherein the discharging conveying line (3) comprises:

two groups of discharging fixing plates (31) are respectively arranged on two sides of the PCB (200) in the width direction; and

and the discharging conveyor belt (32) is arranged in two groups, the discharging conveyor belt (32) is arranged on the discharging fixing plate (31), the starting end of the discharging conveyor belt (32) is adjacent to the conveying component (21), and the discharging conveyor belt (32) is arranged in two groups and conveys the PCB (200) together.

10. A PCB board trimming apparatus, comprising a trimming mechanism and a PCB board conveying mechanism according to any one of claims 1 to 9, wherein the trimming mechanism is configured to trim the pins on the back surface of the PCB board (200) conveyed by the conveying assembly (21).