Transfer trolley for producing and processing PCB (Printed Circuit Board)

Abstract

The invention relates to the field of PCB transfer, in particular to a transfer trolley for PCB production and processing. According to the transfer trolley, a closed space is formed by a sleeve shell and an electric control lifting cabin and used for preventing harmful chemical gas from leaking outwards, hot air flow is conveyed to all layers of PCBs through an air heater so as to accelerate volatilization of residual solvents and the harmful chemical gas, then volatile matter is pumped to an activated carbon layer through an exhaust fan to be adsorbed, and through the process, the residual solvents and the harmful chemical gas can be recycled. According to the PCB stacking device, the PCB residual solvent can be rapidly volatilized and harmful gas can be collected and treated synchronously in the transferring process, and in addition, the stacking operation of all PCBs in the electric control lifting cabin can be rapidly completed by pulling open the side supporting plates between the C-shaped inserting rails; the technical problem that each PCB transfer trolley needs to be parked for a long time to wait for a PCB to wait for volatilization of a residual solvent, and the use efficiency of the PCB transfer trolley is seriously affected is solved.

Description

Technical Field

[0001] This invention relates to the field of PCB board material transfer, and more particularly to a transfer vehicle for PCB board production and processing. Background Technology

[0002] During the PCB board manufacturing process, transfer vehicles are needed to move PCB boards to different production workshops. When transferring PCB boards that have completed ink printing to the next production workshop, although the printing ink on the surface of the PCB board has been exposed to UV light, and the photoinitiator in the ink crosslinks within a few seconds to form a hard polymer layer, some printing ink still has a small amount of solvent residue after curing, as well as a small amount of harmful chemical gases that irritate the respiratory tract, and may even contain trace amounts of harmful substances, such as benzene derivatives. Manufacturers usually indicate in their product instructions that after the printing ink is cured by UV light, the residual solvent needs to wait 2-3 hours for it to evaporate naturally. Therefore, PCB boards need to be temporarily stored on the transfer vehicle for 2-3 hours to allow the residual solvent to evaporate. This results in each transfer vehicle needing to be parked for a long time, which seriously affects its efficiency. Summary of the Invention

[0003] To overcome the drawback that each PCB board transport vehicle needs to be parked for a long time to allow residual solvents to evaporate, which seriously affects the efficiency of the PCB board transport vehicle, this invention provides a transport vehicle for PCB board production and processing.

[0004] The technical solution of this invention: A transfer cart for PCB board production and processing includes a handcart, a base, folding telescopic tubes, an activated carbon layer, a casing, an electrically controlled lifting chamber, side support plates, C-shaped rails, a hot air blower, and air ducts; the base is fixedly connected to the handcart; the activated carbon layer is loaded inside the base; an air outlet channel structure connecting to the activated carbon layer is opened at the bottom of the base; several folding telescopic tubes connecting to the activated carbon layer are provided at the top of the base; the casing is fixedly connected to the base; an electrically controlled lifting chamber is slidably connected to the casing through an electrically controlled lifting component; a board conveying channel structure for conveying PCB boards into the electrically controlled lifting chamber is opened on the casing. The structure includes: several air collection channels connected to corresponding folding telescopic pipes within the electrically controlled lifting cabin; several air extraction holes connected to the air collection channels on the inner wall of the electrically controlled lifting cabin; several side support plates connected to the inner left and right sides of the electrically controlled lifting cabin; a C-shaped rail inserted between two adjacent upper and lower side support plates, the width of the conveying channel in the left-right direction being consistent with the width of the rail between two C-shaped rails on the same floor; a hot air blower installed on the electrically controlled lifting cabin; an air supply pipe connected to the hot air blower fixedly connected inside the electrically controlled lifting cabin; and several air outlets on the air supply pipe.

[0005] Furthermore, the C-shaped rails use anti-static rubber material.

[0006] Furthermore, an exhaust fan is installed in the air vent of the lower compartment.

[0007] Furthermore, the side support plate is slidably connected to the electrically controlled lifting cabin; the side support plate is provided with a pull plate that extends outward through the electrically controlled lifting cabin.

[0008] Furthermore, a wedge-shaped inclined structure is provided on the side of the side support plate away from the inner wall of the casing.

[0009] Furthermore, the bottom of the electrically controlled elevator cabin is slidably connected to a base plate.

[0010] Furthermore, the side support plates are made of iron plate material; and at least one electromagnet for magnetically attracting the iron plate material is installed on each of the left and right sides of the casing.

[0011] Furthermore, several electric conveyor wheels for conveying PCB boards are rotatably connected in the conveyor channel of the casing.

[0012] Furthermore, a mounting bracket is slidably connected to the housing; an electric lifting push rod that drives the mounting bracket to move in the up-down direction is installed on the housing; an electric slider that moves in the front-back direction is slidably connected to the mounting bracket; and an electromechanical clamp is installed on the electric slider.

[0013] Furthermore, the clamping area of ​​the electromechanical clamp is provided with anti-slip silicone.

[0014] The beneficial effects of this invention are as follows: This invention provides a transfer cart for PCB board production and processing. The cart has a housing and an electrically controlled lifting compartment on its base. PCB boards are stored in layers within the electrically controlled lifting compartment, arranged in C-shaped rails. The housing and the electrically controlled lifting compartment form a closed space to prevent the leakage of harmful chemical gases. Within this closed space, PCB boards are transferred. Simultaneously, a hot air blower delivers hot air to each layer of PCB boards. This hot air accelerates the evaporation of residual solvents and harmful chemical gases. An exhaust fan then draws these gases into an activated carbon layer for adsorption, achieving rapid evaporation and collection of residual solvents and harmful chemical gases during the transfer process. Furthermore, by opening the side support plates between the C-shaped rails, the stacking of all PCB boards within the electrically controlled lifting compartment can be completed quickly. This overcomes the technical problem that each PCB board transfer cart requires a long period of parking to allow residual solvents to evaporate, severely impacting the cart's efficiency. Attached Figure Description

[0015] Figure 1 This is a diagram showing the closed state of a transfer vehicle used for PCB board production and processing. Figure 2 A three-dimensional view of the casing of a transfer vehicle used for PCB board production and processing; Figure 3 A three-dimensional cross-sectional view of the casing of a transfer vehicle used for PCB board production and processing; Figure 4 A front sectional view of the bottom compartment and outer casing of a transfer vehicle used for PCB board production and processing; Figure 5 A partial 3D view of the electrically controlled lifting compartment of a transfer vehicle used for PCB board production and processing; Figure 6 A three-dimensional view of the base plate of a transfer vehicle used for PCB board production and processing; Figure 7 A partial three-dimensional cross-sectional view of the electrically controlled lifting compartment of a transfer vehicle used for PCB board production and processing; Figure 8 A three-dimensional view of the side support plate and C-shaped rail of a transfer vehicle used for PCB board production and processing; Figure 9 This is a diagram showing the raised state of a transfer vehicle used in the production and processing of PCB boards.

[0016] Reference numerals: 1-Trolley, 2-Bottom compartment, 201-Air outlet channel, 21-Folding telescopic tube, 22-Activated carbon layer, 23-Exhaust fan, 3-Casing, 301-Plate conveying channel, 31-Electric conveyor wheel, 4-Electrically controlled lifting compartment, 401-Air collection channel, 402-Exhaust port, 41-Side support plate, 4101-Wedge-shaped inclined surface, 4102-Pull plate, 42-C-shaped insert rail, 4201-Hollowed groove, 43-Bottom plate, 5-Hot air blower, 51-Air conveying pipe, 5101-Air outlet, 6-Electromagnet, 71-Mounting bracket, 72-Electrically lifting push rod, 73-Electrically operated slider, 74-Electrically controlled mechanical clamp. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example 1: A transfer vehicle for PCB board production and processing according to the present invention, such as... Figures 1-9As shown, the system includes a handcart 1, a bottom compartment 2, folding telescopic tubes 21, an activated carbon layer 22, an exhaust fan 23, a casing 3, an electrically controlled lifting compartment 4, side support plates 41, C-shaped rails 42, a hot air blower 5, and an air supply pipe 51. The bottom compartment 2 is fixedly connected to the handcart 1. The activated carbon layer 22 is loaded inside the bottom compartment 2. An air outlet channel 201 structure is opened at the bottom of the bottom compartment 2. Several folding telescopic tubes 21 are provided at the top of the bottom compartment 2. The air outlet channel 201 and all the folding telescopic tubes 21 are connected to the activated carbon layer. Layer 22; A fan 23 is installed in the air outlet channel 201 of the bottom compartment 2; A casing 3 is fixedly connected to the bottom compartment 2; An electrically controlled lifting chamber 4 is slidably connected to the casing 3 through an electrically controlled lifting component; A conveying channel 301 structure is opened on the upper front side of the casing 3; An air collecting channel 401 structure is opened inside the electrically controlled lifting chamber 4, which corresponds to the number and position of the folding telescopic tubes 21, and the air collecting channel 401 is connected to the corresponding folding telescopic tube 21; Several connecting air collecting channels are opened on the inner wall of the electrically controlled lifting chamber 4. The air passage 401 has an air extraction port 402 structure; the inner left and inner right sides of the electrically controlled lifting chamber 4 are each connected to several side support plates 41 distributed in the vertical direction; a C-shaped rail 42 is inserted between each pair of adjacent upper and lower side support plates 41; the width of the board conveying passage 301 in the left and right direction is consistent with the width of the rails between the two C-shaped rails 42 on the same layer, so when the PCB board is pulled out from the C-shaped rail 42, the C-shaped rail 42 will be blocked by the housing 3. The PCB cannot be pulled out along with the board through the conveying channel 301; each C-shaped rail 42 has several hollowed-out slots 4201, which can prevent the air extraction holes 402 on the inner wall of the electric lifting chamber 4 from being blocked; a hot air blower 5 is installed on the electric lifting chamber 4; an air supply pipe 51 is fixedly connected inside the electric lifting chamber 4; the air outlet of the hot air blower 5 is connected to the air supply pipe 51; and several air outlets 5101 are opened on the air supply pipe 51.

[0019] like Figures 4-8 As shown, all C-shaped rails 42 are made of anti-static rubber material to prevent the PCB board from generating a large amount of static electricity during the movement of the C-shaped rails 42, thereby preventing damage to the PCB board from static electricity; all side support plates 41 are slidably connected to the electrically controlled lifting cabin 4; each side support plate 41 is provided with a pull plate 4102, and the pull plate 4102 extends outward through the electrically controlled lifting cabin 4; all side support plates 41 have a wedge-shaped inclined surface 4101 structure on the side away from the inner wall of the casing 3; the bottom of the electrically controlled lifting cabin 4 is slidably connected to a base plate 43.

[0020] The following are the steps for loading and unloading PCB boards using a transfer vehicle for PCB board production and processing according to the present invention.

[0021] First, the staff pushes the handcart 1 to align the conveying channel 301 of the casing 3 with the external PCB board conveying equipment. Then, they control the electrically controlled lifting components inside the casing 3 to raise the electrically controlled lifting cabin 4 completely upwards, allowing the electrically controlled lifting cabin 4 to move from the bottom... Figure 1 The status shown has switched to the following: Figure 9 In the state shown, the two C-shaped rails 42 on the lower first layer inside the electrically controlled lifting cabin 4 are aligned with the board conveying channel 301 of the casing 3. Then, the external PCB board conveying equipment transports the PCB board towards the board conveying channel 301 of the casing 3. After the PCB board enters the board conveying channel 301, the operator pushes it into the cabin until it is completely placed into the two C-shaped rails 42 on the lower first layer inside the electrically controlled lifting cabin 4, allowing the first PCB board to be inserted between the two C-shaped rails 42 on the lower first layer. Then, the electrically controlled lifting components inside the casing 3 move the electrically controlled lifting cabin 4 downwards to a specified height, aligning the two C-shaped rails 42 on the lower second layer inside the electrically controlled lifting cabin 4 with the board conveying channel 301 of the casing 3. Then, the operator, in coordination with the external PCB board conveying equipment, moves the second PCB board... Each PCB board is inserted between two C-shaped rails 42 on the second layer, and so on, to sequentially insert each PCB board between two C-shaped rails 42 on each layer inside the electrically controlled lifting chamber 4, completing the PCB board loading process. Conversely, when the operator pulls the PCB board between the two C-shaped rails 42 in the opposite direction and moves it outward through the board conveying channel 301 of the housing 3, the PCB board can be unloaded. After all the PCB boards have been loaded according to the above steps, the electrically controlled lifting component inside the housing 3 moves the electrically controlled lifting chamber 4 downward, allowing the electrically controlled lifting chamber 4 to be completely housed inside the housing 3. The electrically controlled lifting chamber 4 and the housing 3 together form a closed space, thereby effectively preventing the leakage of harmful chemical gases remaining on the PCB boards inside the electrically controlled lifting chamber 4 during the transfer process.

[0022] The following are the working steps for the rapid volatilization and collection of residual solvents and harmful chemical gases in a PCB board production and processing transfer vehicle according to the present invention.

[0023] During the process of workers pushing the trolley 1 to transfer PCB boards in the enclosed space, the hot air blower 5 continuously delivers hot air to the air duct 51. The hot air is blown outward through each air outlet 5101 into the electrically controlled lifting chamber 4. When the hot air flows over the surface of each PCB board, it can accelerate the evaporation of residual solvents and harmful chemical gases on the PCB board surface. At the same time, the exhaust fan 23 is activated, generating negative pressure in the air outlet channel 201. This negative pressure drives the hot air carrying volatiles in the electrically controlled lifting chamber 4 to flow downward through the exhaust port 402, the air collection channel 401 and the folding telescopic tube 21, and then through the activated carbon layer 22. The activated carbon layer 22 collects and purifies the residual solvents and harmful chemical gases carried in the hot air. After purification, the hot air is discharged outward through the air outlet channel 201. This achieves the rapid evaporation and collection of residual solvents and harmful chemical gases from the PCB boards during the transfer process, eliminating the need for the PCB board production and processing transfer vehicle of this invention to be parked for a long time to allow the PCB boards to evaporate residual solvents.

[0024] The following are the rapid stacking and unloading steps of a PCB board transport vehicle for PCB board production and processing according to the present invention.

[0025] After the staff pushes the trolley 1 to transfer the PCB boards in the enclosed space to the destination, when it is necessary to stack all the PCB boards in the electrically controlled lifting cabin 4, the staff controls the electrically controlled lifting components in the housing 3 to slowly raise the electrically controlled lifting cabin 4. At the same time, starting from the top layer, the staff pulls the pull plates 4102 of each layer outwards, causing the side support plates 41 to move away from under the corresponding C-shaped insert rails 42. Each time a side support plate 41 is pulled away from under the C-shaped insert rail 42, the C-shaped insert rail 42 above that layer loses its support and slides down along the wedge-shaped inclined surface 4101, allowing the C-shaped insert rail 42 to pull the inserted PCB board down until it is close to the next layer's C-shaped insert rail 42. This process is repeated to complete the pulling process of each layer of side support plates 41, allowing each layer of C-shaped insert rail 42 to slide downwards. The PCBs slide down to the next layer of C-shaped rails 42 until the first layer of C-shaped rails 42 slides down to the surface of the base plate 43. This allows the PCBs to be stacked together with the C-shaped rails 42 in between, and the stacking of adjacent PCBs with the C-shaped rails 42 in between prevents them from bumping and getting damaged. Finally, the operator only needs to pull the base plate 43 forward to remove all the stacked PCBs from the electrically controlled lifting chamber 4, thus completing the rapid stacking and unloading of all PCBs in the electrically controlled lifting chamber 4. In addition, after the operator pushes the pull plate 4102 to reset the side support plate 41, the operator can insert the new C-shaped rails 42 between the two adjacent side support plates 41 to prepare for the transfer of the next batch of PCBs.

[0026] Example 2, as Figures 1-9 As shown, based on the above embodiment 1, all the pull plates 4102 of the side support plates 41 in this embodiment are made of iron plate material; two electromagnets 6 are installed on the left and right sides of the housing 3; during the process of the electrically controlled lifting cabin 4 driving each layer of side support plates 41 to move upward through the electromagnets 6, when it is necessary to pull the side support plate 41 away from the C-shaped rail 42, the electromagnets 6 apply a brief electromagnetic attraction to the pull plate 4102 of the currently aligned side support plate 41, so that the pull plate 4102 can replace the staff to pull the side support plate 41 away from the C-shaped rail 42 under the action of electromagnetic attraction, thereby realizing the automated completion of the stacking of all PCB boards.

[0027] Example 3, as Figures 1-9 As shown, based on the above embodiment 1, in this embodiment, a plurality of electric conveying wheels 31 are rotatably connected in the board conveying channel 301 of the housing 3, and the electric conveying wheels 31 are made of anti-static rubber material; a mounting frame 71 is slidably connected to the housing 3; two electric lifting push rods 72 are installed on the housing 3; the telescopic ends of the two electric lifting push rods 72 are jointly fixed to the mounting frame 71; an electric slider 73 is slidably connected to the mounting frame 71; an electromechanical clamp 74 is installed on the electric slider 73; when the PCB board passes through the board conveying channel of the housing 3... During the process of feeding the PCB board into the electrically controlled lifting chamber 4, the electric lifting push rod 72 first drives the electric slider 73 and the electrically controlled mechanical clamp 74 to rise away from the housing 3. The operator controls the conveying equipment to insert the PCB board between all the electric conveyor wheels 31. The electric conveyor wheels 31 together convey the PCB board backward into the electrically controlled lifting chamber 4. Just as the PCB board is about to leave the electric conveyor wheels 31, the electric lifting push rod 72 drives the electric slider 73 and the electrically controlled mechanical clamp 74 to move downward, so that the electrically controlled mechanical clamp 74 is at the same height as the PCB board. Once the PCB board is aligned with the electric slider 73, the electric mechanical clamp 74 moves backward towards the PCB board. After the electric mechanical clamp 74 holds the PCB board, the electric slider 73 drives the electric mechanical clamp 74 to push the held PCB board completely into the electric lifting chamber 4. This automatically completes the PCB board loading process in the electric lifting chamber 4 without manual operation. Conversely, the electric slider 73 can also drive the electric mechanical clamp 74 to hold the PCB board inside the electric lifting chamber 4. Clamp 74 pulls the clamped PCB board forward, automatically completing the unloading of the PCB board in the electrically controlled lifting chamber 4. This eliminates the need for manual loading and unloading of the PCB board, effectively preventing impurities introduced by human contact and better maintaining the cleanliness of the PCB board surface. The clamping area of ​​the electrically controlled mechanical clamp 74 is equipped with anti-slip silicone. The clamping area of ​​the electrically controlled mechanical clamp 74 clamps the PCB board through the anti-slip silicone, preventing the electrically controlled mechanical clamp 74 from scratching the surface of the PCB board during the pushing and pulling process.

[0028] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. A transfer cart for PCB board production and processing, comprising a handcart (1); Its features are, It also includes a bottom compartment (2); the bottom compartment (2) is fixedly connected to the handcart (1); the bottom compartment (2) is filled with an activated carbon layer (22); the bottom of the bottom compartment (2) is provided with an air outlet channel (201) structure that connects to the activated carbon layer (22); the top of the bottom compartment (2) is provided with several folding telescopic tubes (21) that connect to the activated carbon layer (22); the bottom compartment (2) is fixedly connected to a shell (3); an electrically controlled lifting chamber (4) is slidably connected to the shell (3) through an electrically controlled lifting component; the shell (3) is provided with a board conveying channel (301) structure that conveys PCB boards into the electrically controlled lifting chamber (4); the electrically controlled lifting chamber (4) is provided with several air collection channels (401) structures, and the air collection channels (401) are connected to The corresponding folding telescopic tube (21); the inner wall of the electric lifting cabin (4) is provided with several air extraction holes (402) structure that connect to the air collection channel (401); the inner left and inner right sides of the electric lifting cabin (4) are each connected with several side support plates (41); a C-shaped rail (42) is inserted between two adjacent side support plates (41) on the upper and lower sides, and the width of the conveying channel (301) in the left and right direction is consistent with the width of the rail between the two C-shaped rails (42) on the same floor; a hot air blower (5) is installed on the electric lifting cabin (4); an air supply pipe (51) that connects to the hot air blower (5) is fixed inside the electric lifting cabin (4); several air outlets (5101) are opened on the air supply pipe (51).

2. The transfer vehicle for PCB board production and processing according to claim 1, characterized in that, The C-shaped insert (42) uses anti-static rubber material.

3. The transfer vehicle for PCB board production and processing according to claim 1, characterized in that, A blower (23) is installed in the air vent (201) of the lower compartment (2).

4. The transfer vehicle for PCB board production and processing according to claim 1, characterized in that, The side support plate (41) is slidably connected to the electrically controlled lifting cabin (4); the side support plate (41) is provided with a pull plate (4102) that extends outward through the electrically controlled lifting cabin (4).

5. A transfer vehicle for PCB board production and processing according to claim 4, characterized in that, The side support plate (41) has a wedge-shaped inclined surface (4101) structure on the side away from the inner wall of the casing (3).

6. A transfer vehicle for PCB board production and processing according to claim 5, characterized in that, The bottom of the electrically controlled elevator cabin (4) is slidably connected to a base plate (43).

7. A transfer vehicle for PCB board production and processing according to claim 4, characterized in that, The pull plate (4102) of the side support plate (41) is made of iron plate material; at least one electromagnet (6) is installed on the left and right sides of the casing (3).

8. A transfer vehicle for PCB board production and processing according to claim 1, characterized in that, Several electric conveyor wheels (31) for conveying PCB boards are rotatably connected in the conveyor channel (301) of the housing (3).

9. A transfer vehicle for PCB board production and processing according to any one of claims 1-8, characterized in that, A mounting bracket (71) is slidably connected to the housing (3); an electric lifting push rod (72) is installed on the housing (3) to drive the mounting bracket (71) to move in the up and down direction; an electric slider (73) is slidably connected to the mounting bracket (71) to move in the front and back direction; an electric mechanical clamp (74) is installed on the electric slider (73).

10. A transfer vehicle for PCB board production and processing according to claim 9, characterized in that, The clamping area of ​​the electromechanical clamp (74) is provided with anti-slip silicone.

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