Placing rack for PCB (Printed Circuit Board)

Abstract

The utility model relates to a placing rack for a PCB (printed circuit board), which belongs to the field of PCB production equipment and comprises a first support, two transmission shafts arranged on the left and the right are arranged on the first support, the two transmission shafts are positioned at the same horizontal height, the axes of the two transmission shafts are arranged along the front-back direction, and transmission wheels are fixedly arranged on the two transmission shafts. The two transmission shafts are sleeved with a conveying belt in transmission connection with the transmission shafts through transmission wheels, the conveying belt is in a runway shape, a plurality of supporting blocks are fixedly arranged on the outer side surface of the conveying belt at equal intervals, inserting grooves are downwards formed in the top ends of the supporting blocks, and the front ends and the rear ends of the inserting grooves extend out of the supporting blocks. A driving mechanism corresponding to the transmission shaft is arranged on the first bracket, is in driving connection with the transmission shaft and is used for driving the transmission shaft to rotate clockwise. According to the PCB placing frame, the PCBs can be fully inserted into the whole placing frame only by enabling the left end of the placing frame to be located in the moving range of the human hand, the placing frame does not need to occupy too much manual operation space, and related operation of the PCBs by workers can be effectively facilitated.

Description

Technical Field

[0001] This utility model relates to the field of PCB production equipment, and in particular to a PCB placement rack. Background Technology

[0002] A PCB (Printed Circuit Board) is an infrastructure used to support and connect electronic components. It provides electrical paths through circuit connections so that various electronic components can communicate and function together. PCBs are widely used in various electronic devices, such as mobile phones, computers, televisions, and automotive electronics.

[0003] Currently, although most operations in PCB production are completed by automated equipment, some steps still require manual intervention. For example, in the PCB surface treatment process, metallization holes and copper plating may require manual intervention, especially in small-batch or specially designed PCB production. After PCB surface treatment, pads may need to be manually trimmed, especially when there are some defective pads or joints. In addition, manual intervention is also essential in quality control and functional testing.

[0004] In manual operation steps, after completing the operation, the PCB needs to be temporarily stored to facilitate its transfer to the next process. Currently, PCBs are typically stored in dedicated storage racks. However, these racks have a certain size range. To facilitate the insertion of PCBs, the entire rack needs to be placed within the worker's reach. This results in a large rack occupying a significant portion of the worker's reach, impacting the manual operation process. Furthermore, it also affects the placement of tools needed during the manual operation, making it difficult to place both tools and the rack within the worker's reach simultaneously.

[0005] Based on this, the present invention provides a PCB placement rack, which greatly reduces the space occupied by the manual operation by setting a movable storage structure, thereby facilitating the manual operation process. Utility Model Content

[0006] Based on this, it is necessary to provide a PCB placement rack, including a first support. Two drive shafts are arranged left and right on the first support, both rotatably mounted on the first support. The two drive shafts are at the same horizontal height, and their axes are arranged along the front-back direction. A drive wheel is fixedly mounted on each of the two drive shafts. A conveyor belt, shaped like a racetrack, is sleeved on the two drive shafts via the drive wheels and is connected to them for transmission. Several support blocks are fixedly mounted at equal intervals on the outer surface of the conveyor belt. A slot is formed at the top of each support block, and both ends of the slot extend out of the support block. A drive mechanism is also provided on the first support corresponding to the drive shafts. The drive mechanism is driven by the drive shafts to drive them to rotate clockwise.

[0007] In this invention, the placement rack is used to place PCBs without mounted electronic components. Specifically, the slots in the support blocks on the placement rack are used for inserting the PCBs, thereby achieving PCB placement. Among all the support blocks, only the support block located on the upper surface of the conveyor belt is used for PCB placement.

[0008] In this invention, the support blocks are mounted on the first support via a conveyor belt. Driven by the conveyor belt, the support blocks can move. After a PCB is inserted into the first support block on the left side of the support block located on the upper surface of the conveyor belt, the support block is moved to the right by a distance 'a', preferably the same distance as the distance between the two support blocks. This allows the PCB to move to the right. At this point, a support block without a PCB will move to the leftmost side of the upper surface of the conveyor belt, and this support block can then be used for the next PCB placement. This process continues. Therefore, in this invention, only the left end of the placement rack needs to be within the range of human hand movement to fill the entire placement rack with PCBs. The placement rack does not require excessive human operating space, making it energy-efficient and convenient for workers to perform PCB-related operations.

[0009] In this invention, the movement of the conveyor belt is driven by a drive mechanism. The drive mechanism drives the transmission shaft to rotate clockwise, which in turn moves the upper surface of the conveyor belt to the right.

[0010] Furthermore, the driving mechanism includes a ratchet fixedly disposed at one end of the transmission shaft and fixedly connected to the transmission shaft. The ratchet is coaxially disposed with the transmission shaft. A lever is rotatably disposed on the transmission shaft. The lever is disposed vertically downward and is provided with a pawl that cooperates with the ratchet and is used to push the ratchet to rotate clockwise.

[0011] In this invention, the drive shaft is fixedly connected to the ratchet. The ratchet can be driven to rotate by the reciprocating swing of the lever. By setting the ratchet driven by the pawl on the lever to rotate clockwise, the reciprocating swing of the lever can drive the drive wheel to rotate clockwise.

[0012] Furthermore, the system also includes a second bracket separately from the first bracket, on which a drive cylinder is fixedly mounted; the drive mechanism further includes a push rod corresponding to the lever, the push rod being arranged along the left-right direction and slidably mounted on the first bracket, one end of the push rod being rotatably provided with a sleeve, the sleeve being slidably fitted onto the lever; the drive cylinder is drivenly connected to the push rod to push the push rod to move left and right reciprocally; the drive mechanism also includes a controller connected to the drive cylinder.

[0013] In this invention, the piston rod of the drive cylinder on the second bracket is driven by a push rod and a lever. The reciprocating movement of the piston rod can drive the lever to swing back and forth, thereby realizing the clockwise rotation of the transmission shaft. The stroke of the drive cylinder determines the rotation angle of the transmission shaft, which in turn determines the moving distance of the support block on the conveyor belt. By selecting a drive cylinder with a suitable stroke, each extension and retraction of the piston rod of the drive cylinder can drive the support block to move a distance b, and the distance b is the same as the distance a between the support blocks.

[0014] In this invention, the controller connected to the drive cylinder is used to control the extension and retraction of the cylinder. Each time the controller is triggered, the cylinder is driven to extend or retract once. The trigger is preferably a foot switch to facilitate operation by the operator.

[0015] In this invention, preferably, the piston rod of the drive cylinder is connected to the push rod via a detachable connection structure, such as a bolted connection structure, to facilitate the separation of the drive cylinder and the piston rod. In this case, the separately configured first and second supports can be separated from each other. That is, after the first support is fully loaded with PCBs, the first support can be transported as a whole, thus facilitating the handling of the PCBs. It is worth noting that since the first and second supports are of a separate structure, both the first and second supports need to have a mounting structure, such as a bolted mounting structure, to ensure that the first and second supports can be fixed to the operating platform and simultaneously removed from the operating platform.

[0016] Furthermore, the first bracket includes a base plate, and a left side plate, a right side plate, a front side plate, and a rear side plate disposed on the left and right sides and the front and rear sides of the base plate. The base plate, left side plate, right side plate, front side plate, and rear side plate form a box-shaped structure with an open top. The top ends of the left side plate, right side plate, front side plate, and rear side plate are located on the same horizontal plane, forming a support surface. The support surface is located below the bottom end of the slot. The two ends of the drive shaft are rotatably disposed on the front side plate and the rear side plate through a bearing structure. The drive mechanism is located on the front side of the front side plate, and the drive shaft connected to the ratchet extends forward out of the front side plate and is fixedly connected to the ratchet. A through hole is provided on the left side plate corresponding to the push rod. The left slot of the push rod extends to the left out of the through hole and is slidably engaged with the through hole through a linear bearing.

[0017] In this utility model, the bottom plate, left side plate, right side plate, front side plate and rear side plate are combined into a closed structure with an opening at the top, which can play a certain protective role for the conveyor belt inside.

[0018] Furthermore, a guide rod is fixedly inserted into the support block. The guide rod is located below the slot and is arranged along the front-to-back direction. The inner sidewalls of the front and rear side plates are provided with guide grooves corresponding to the guide rods. The guide grooves are arranged parallel to the conveyor belt. The end of the guide rod is inserted into the guide groove and is slidably engaged with the guide groove.

[0019] In this invention, the front and rear ends of the guide rod on the support block are respectively inserted into the guide grooves on the front and rear side plates, which can guide and support the support block, giving it better structural stability and preventing it from tilting during movement.

[0020] Furthermore, a protective cover is fixedly installed on the front side plate, the protective cover is installed on the drive mechanism, and the front end of the protective cover is provided with a closable cap.

[0021] In this invention, the protective cover on the front panel encloses the drive mechanism, providing protection and preventing personnel from touching it, thus eliminating safety hazards. The sealing cap on the protective cover allows for easy opening and closing of the cover, facilitating maintenance of the drive mechanism inside.

[0022] Furthermore, the drive wheel is a sprocket, and the conveyor belt is a chain.

[0023] In this invention, sprockets and chains are used as the drive wheels and the conveyor belt, which effectively ensures the structural strength and rigidity of the conveyor belt and ensures that the support block can move smoothly under the drive of the conveyor belt. Specifically, the connection between the support block and the conveyor belt is welded; the support block is welded to a link in the conveyor belt.

[0024] The principle and effects of this utility model will be further explained below with reference to the above technical solution and the accompanying drawings:

[0025] In this invention, the support blocks are mounted on the first support via a conveyor belt. Driven by the conveyor belt, the support blocks can move. After a PCB is inserted into the first support block on the left side of the support block located on the upper surface of the conveyor belt, the support block is moved to the right by a distance 'a', preferably the same distance as the distance between the two support blocks. This allows the PCB to move to the right. At this point, a support block without a PCB will move to the leftmost side of the upper surface of the conveyor belt, and this support block can then be used for the next PCB placement. This process continues. Therefore, in this invention, only the left end of the placement rack needs to be within the range of human hand movement to fill the entire placement rack with PCBs. The placement rack does not require excessive human operating space, making it energy-efficient and convenient for workers to perform PCB-related operations. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the PCB placement rack described in an embodiment of the present invention (with the front panel hidden).

[0027] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0028] Figure 3 This is a top view of the PCB placement rack described in an embodiment of the present invention.

[0029] Figure 4 for Figure 3 A partially enlarged structural diagram.

[0030] Attached Figure

[0031] 11-Base plate, 12-Left side plate, 13-Right side plate, 14-Front side plate, 15-Rear side plate, 16-Guide groove, 21-Drive shaft, 22-Drive wheel, 23-Ratchet, 24-Conveyor belt, 25-Pulley, 251-Sleeve, 252-Pawl, 26-Push rod, 3-Support block, 31-Slot, 32-Guide rod, 4-Protective cover. Detailed Implementation

[0032] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0033] like Figure 1-4 A PCB placement rack includes a first support, on which two drive shafts 21 are arranged left and right, both rotatably mounted on the first support. The two drive shafts 21 are at the same horizontal height and their axes are arranged along the front-back direction. Each drive shaft 21 is fixedly mounted with a drive wheel 22. A conveyor belt 24, which is connected to the drive shafts 21 through the drive wheels 22, is mounted on the two drive shafts 21. The conveyor belt 24 is racetrack-shaped. A plurality of support blocks 3 are fixedly arranged at equal intervals on the outer surface of the conveyor belt 24. The top of each support block 3 has a slot 31 that extends downward, and both ends of the slot 31 extend out of the support block 3. The first support is also provided with a drive mechanism corresponding to the drive shafts 21. The drive mechanism is driven to drive the drive shafts 21 to rotate clockwise.

[0034] In this invention, the placement rack is used to place PCBs without mounted electronic components. Specifically, the slots 31 of the support blocks 3 on the placement rack are used for inserting the PCBs, thereby realizing the placement of the PCBs. Among all the support blocks 3, only the support block 3 located on the upper surface of the conveyor belt 24 is used for placing the PCBs.

[0035] In this invention, the support block 3 is mounted on the first support via the conveyor belt 24. Driven by the conveyor belt 24, the support block 3 can move. After a PCB is inserted into the first support block 3 on the left side of the support block 3 located on the upper surface of the conveyor belt 24, the support block 3 is moved to the right by a distance 'a', preferably the same distance as the distance between the two support blocks 3. This allows the PCB to move to the right. At this point, a support block 3 without a PCB will move to the leftmost side of the upper surface of the conveyor belt 24. This support block 3 can then be used for the next PCB placement, and so on. Therefore, in this invention, only the left end of the placement rack needs to be within the range of human hand movement to fill the entire placement rack with PCBs. The placement rack does not require excessive human operating space, making it energy-efficient and convenient for workers to perform PCB-related operations.

[0036] In this invention, the movement of the conveyor belt is driven by a drive mechanism. The drive mechanism drives the transmission shaft 21 to rotate clockwise, which in turn moves the upper surface of the conveyor belt to the right.

[0037] In one embodiment, the driving mechanism includes a ratchet 23 fixedly disposed at one end of the transmission shaft 21 and fixedly connected to the transmission shaft 21. The ratchet 23 is coaxially disposed with the transmission shaft 21. A lever 25 is rotatably disposed on the transmission shaft 21. The lever 25 is disposed vertically downward. The lever 25 is provided with a pawl 252 that cooperates with the ratchet 23 and is used to push the ratchet 23 to rotate clockwise.

[0038] In this embodiment, the drive shaft 21 is fixedly connected to the ratchet 23. The ratchet 23 can be driven to rotate by the reciprocating swing of the lever 25. By setting the rotation of the ratchet 23 driven by the pawl 252 on the lever 25 to clockwise, the reciprocating swing of the lever 25 can drive the drive wheel 22 to rotate clockwise.

[0039] In one embodiment, a second bracket is separately disposed from the first bracket, and a drive cylinder is fixedly disposed on the second bracket; the drive mechanism further includes a push rod 26 corresponding to the lever 25, the push rod 26 is disposed along the left-right direction and is slidably disposed on the first bracket, one end of the push rod 26 is rotatably disposed with a sleeve 251, the sleeve 251 is slidably sleeved on the lever 25; the drive cylinder is drivenly connected to the push rod 26 to push the push rod 26 to move left and right reciprocally; the drive mechanism further includes a controller connected to the drive cylinder.

[0040] In this embodiment, the piston rod of the drive cylinder on the second bracket is driven to connect to the lever 25 via the push rod 26. The reciprocating movement of the piston rod can drive the lever 25 to swing back and forth, thereby realizing the clockwise rotation of the transmission shaft 21. The stroke of the drive cylinder determines the rotation angle of the transmission shaft 21, which in turn determines the moving distance of the support block 3 on the conveyor belt 24. By selecting a drive cylinder with a suitable stroke, each extension and retraction of the piston rod of the drive cylinder can drive the support block 3 to move a distance b, and the distance b is the same as the distance a between the support block 3 and the support block 3.

[0041] In this embodiment, the controller connected to the drive cylinder is used to control the extension and retraction of the cylinder. Each time the controller is triggered, the cylinder is driven to extend or retract once. The trigger is preferably a foot switch to facilitate operation by the operator.

[0042] In this embodiment, preferably, the piston rod of the drive cylinder is connected to the push rod 26 via a detachable connection structure, such as a bolted connection structure, to facilitate the separation of the drive cylinder and the piston rod. At this point, the separately configured first and second supports can be separated from each other. That is, after the first support is fully loaded with PCBs, the first support can be moved as a whole, thus facilitating the handling of the PCBs. It is worth noting that since the first and second supports are of a separate structure, both the first and second supports need to have a mounting structure, such as a bolted mounting structure, so that the first and second supports can be fixed to the operating platform and simultaneously removed from the operating platform.

[0043] In one embodiment, the first support includes a base plate 11, and a left side plate 12, a right side plate 13, a front side plate 14, and a rear side plate 15 disposed on the left and right sides and the front and rear sides of the base plate 11. The base plate 11, the left side plate 12, the right side plate 13, the front side plate 14, and the rear side plate 15 form a box-shaped structure with an open top. The top ends of the left side plate 12, the right side plate 13, the front side plate 14, and the rear side plate 15 are located on the same horizontal plane, forming a support surface, which is located in the slot 31. Below the bottom end; the two ends of the drive shaft 21 are rotatably mounted on the front side plate 14 and the rear side plate 15 through a bearing structure; the drive mechanism is located on the front side of the front side plate 14, and the drive shaft 21 connected to the ratchet 23 extends forward out of the front side plate 14 and is fixedly connected to the ratchet 23; a through hole is provided on the left side plate 12 corresponding to the push rod 26, and the left groove of the push rod 26 extends to the left out of the through hole and is slidably engaged with the through hole through a linear bearing.

[0044] In this embodiment, the bottom plate 11, left side plate 12, right side plate 13, front side plate 14 and rear side plate 15 are combined into a closed structure with an opening at the top, which can provide a certain degree of protection for the conveyor belt 24 inside.

[0045] In one embodiment, a guide rod 32 is fixedly inserted into the support block 3. The guide rod 32 is located below the slot 31 and is arranged along the front-back direction. The inner sidewalls of the front side plate 14 and the rear side plate 15 are provided with guide grooves 16 corresponding to the guide rod 32. The guide grooves 16 are arranged parallel to the conveyor belt 24. The end of the guide rod 32 is inserted into the guide groove 16 and is slidably engaged with the guide groove 16.

[0046] In this embodiment, the front and rear ends of the guide rod 32 on the support block 3 are respectively inserted into the guide grooves 16 on the front side plate 14 and the rear side plate 15, which can guide and support the support block 3, making the support block 3 have better structural stability and preventing the support block 3 from deflecting during movement.

[0047] In one embodiment, a protective cover 4 is also fixedly provided on the front side plate 14. The protective cover 4 covers the drive mechanism, and the front end of the protective cover 4 is provided with a closable cover.

[0048] In this embodiment, the protective cover 4 on the front side plate 14 encloses the drive mechanism, thus sealing it off and providing a certain degree of protection. It also prevents personnel from touching the drive mechanism, eliminating potential safety hazards. The sealing cap on the protective cover 4 is used to open and close the cover, facilitating maintenance of the drive mechanism inside.

[0049] In one embodiment, the drive wheel 22 is a sprocket and the conveyor belt 24 is a chain.

[0050] In this embodiment, sprockets and chains are used as the drive wheel 22 and the conveyor belt 24, which can effectively ensure the structural strength and rigidity of the conveyor belt 24 and ensure that the support block 3 can move smoothly under the drive of the conveyor belt 24. The connection structure between the support block 3 and the conveyor belt 24 is welding, specifically, the support block 3 is welded to a link in the conveyor belt 24.

[0051] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mounting rack for PCBs, characterized in that, The system includes a first support frame, on which two drive shafts are arranged left and right, both rotatably mounted on the first support frame. The two drive shafts are at the same horizontal height and their axes are arranged along the front-back direction. Each drive shaft has a drive wheel fixedly mounted on it. A conveyor belt, which is shaped like a racetrack, is fitted onto the two drive shafts through the drive wheels and is connected to them for transmission. Several support blocks are fixedly mounted at equal intervals on the outer surface of the conveyor belt. The top of each support block has a slot that extends downwards, and both ends of the slot extend out of the support block. A drive mechanism is also provided on the first support frame corresponding to the drive shafts. The drive mechanism is driven by the drive shafts to drive them to rotate clockwise.

2. The PCB placement rack according to claim 1, characterized in that, The driving mechanism includes a ratchet fixedly disposed at one end of the transmission shaft and fixedly connected to the transmission shaft. The ratchet is coaxially disposed with the transmission shaft. A lever is rotatably disposed on the transmission shaft. The lever is disposed vertically downward and is provided with a pawl that cooperates with the ratchet and is used to push the ratchet to rotate clockwise.

3. A PCB placement rack according to claim 2, characterized in that, The system also includes a second bracket separate from the first bracket, on which a drive cylinder is fixedly mounted; the drive mechanism further includes a push rod corresponding to the lever, the push rod being arranged along the left-right direction and slidably mounted on the first bracket, one end of the push rod being rotatably provided with a sleeve, the sleeve being slidably mounted on the lever; the drive cylinder is drivenly connected to the push rod to push the push rod to move left and right reciprocally; the drive mechanism also includes a controller connected to the drive cylinder.

4. A PCB placement rack according to claim 3, characterized in that, The first bracket includes a base plate, and a left side plate, a right side plate, a front side plate, and a rear side plate disposed on the left and right sides and the front and rear sides of the base plate. The base plate, left side plate, right side plate, front side plate, and rear side plate form a box-shaped structure with an open top. The top ends of the left side plate, right side plate, front side plate, and rear side plate are located on the same horizontal plane, forming a support surface. The support surface is located below the bottom end of the slot. The two ends of the drive shaft are rotatably disposed on the front side plate and the rear side plate through a bearing structure. The drive mechanism is located on the front side of the front side plate, and the drive shaft connected to the ratchet extends forward out of the front side plate and is fixedly connected to the ratchet. A through hole is provided on the left side plate corresponding to the push rod. The left slot of the push rod extends to the left out of the through hole and is slidably engaged with the through hole through a linear bearing.

5. A PCB mounting rack according to claim 4, characterized in that, A guide rod is also fixedly inserted into the support block. The guide rod is located below the slot and is arranged along the front-to-back direction. The inner sidewalls of the front and rear side plates are provided with guide grooves corresponding to the guide rods. The guide grooves are arranged parallel to the conveyor belt. The end of the guide rod is inserted into the guide groove and is slidably engaged with the guide groove.

6. A PCB mounting rack according to claim 5, characterized in that, A protective cover is also fixedly installed on the front side plate. The protective cover covers the drive mechanism, and the front end of the protective cover is provided with a closable cap.

7. A PCB mounting rack according to claim 1 or 6, characterized in that, The drive wheel is a sprocket, and the conveyor belt is a chain.

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