Circuit board transfer machine

Abstract

The utility model discloses a circuit board transfer machine which comprises a transfer rack and a transfer bicycle, a driving mechanism is arranged on the transfer rack, two guide rails are oppositely arranged on the transfer bicycle, a conveying mechanism is arranged on the guide rails, two ball screws are oppositely arranged between the two guide rails, each ball screw is composed of a lead screw and a sliding seat, and the lead screws and the sliding seats are arranged in parallel. A synchronizing piece used for driving the other lead screw to rotate synchronously when any lead screw rotates is connected between the tail ends of the two lead screws, and a driving piece used for driving any lead screw to rotate and matched with the synchronizing piece to adjust the relative distance between the two guide rails is arranged on the transferring bicycle. The two ends of the two guide rails are provided with connecting pieces which are used for being connected with sliding rails of external tools and stably transmitting circuit boards. According to the utility model, the problems in the prior art that the distance between the double guide rails on the transfer machine is difficult to adapt to circuit boards with different sizes, and the circuit boards fall off when being conveyed to the gap due to the gap reserved between the guide rail of the transfer bicycle and the slide rail of the double-rail equipment are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board transfer machines, and specifically relates to a circuit board transfer machine. Background Art

[0002] With the development of the manufacturing industry, the pipeline equipment has been gradually upgraded. In the circuit board mounting process production line, due to the position limitation of the single-rail equipment or the double-rail equipment, manufacturers will purchase transfer machines for the transportation of circuit boards. That is, when it is necessary to transfer the circuit board to the double-rail mounter, since the printer has a single-rail structure and occupies a large space, it cannot directly meet the direct feeding to the double-rail mounter. Therefore, a transfer machine can be used to feed and transfer the double-rail mounter. Using a transfer machine helps to improve the unit production capacity of the production line, improve the utilization rate of the main equipment, and improve the utilization rate of the factory building. It can effectively compress the process space, minimize the labor cost and save energy consumption. In the prior art, the transfer machine is composed of a transfer machine frame, a transfer single vehicle movably arranged on the transfer machine frame, and a driving mechanism for driving the transfer single vehicle to reciprocate along the length direction of the transfer machine frame. A guide rail for aligning with the rail of the external single-rail equipment or the rail of the external double-rail equipment is arranged on the transfer single vehicle, and a conveyor belt mechanism for transporting the circuit board is arranged on the guide rail. At present, the produced circuit boards have different specifications and thus different sizes. In the prior art, the two guide rails on the transfer single vehicle are relatively fixed, making it difficult to adjust the distance between the two guide rails according to different sizes of circuit boards, resulting in the situation that different sizes of circuit boards are prone to looseness or shaking during transportation, and even the circuit board may fall off. Moreover, in the prior art, since the transfer machine is arranged between the single-rail equipment and the double-rail equipment, the transfer single vehicle needs to be frequently shifted according to different circuit board transfer requirements. Therefore, a certain space needs to be reserved between the guide rail on the transfer single vehicle and the slide rail of the double-rail equipment. When the circuit board is transferred to this space, the circuit board is prone to shaking, offset or falling off from this space. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a circuit board transfer machine to solve the problems that it is difficult to adapt the distance between the two double guide rails on the transfer machine to different sizes of circuit boards and there is a gap between the guide rail of the transfer single vehicle and the slide rail of the double-rail equipment in the prior art, which easily leads to the situation that the circuit board falls off when being transported to this gap.

[0004] To achieve the above object, the utility model provides a circuit board transfer machine, which includes a transfer machine frame and a transfer single vehicle movably arranged on the transfer machine frame. A driving mechanism for driving the transfer single vehicle to reciprocate along the length direction of the transfer machine frame is arranged on the transfer machine frame. Two guide rails are oppositely arranged on the transfer single vehicle, and a transportation mechanism for transporting circuit boards is arranged on the guide rails. Two ball screws are oppositely arranged between the two guide rails. Each ball screw consists of a screw rod and a sliding seat that cooperates with the screw rod and slides along the length direction of the screw rod part. Both sliding seats are connected to one of the guide rails, and the starting ends of the two screw rods are rotatably connected to the other guide rail. A synchronizing member for driving the other screw rod to rotate synchronously when any one of the screw rods rotates is connected between the end parts of the two screw rods. A driving member for driving any one of the screw rods to rotate and cooperating with the synchronizing member to adjust the relative distance between the two guide rails is arranged on the transfer single vehicle. Connecting members for butting with the slide rails of external tooling and stably transporting circuit boards are arranged at both ends of the two guide rails.

[0005] The advantages of adopting the above technical solution are as follows: In the above technology, the transfer single vehicle reciprocates along the length direction of the transfer machine frame through the driving mechanism, and then transports the circuit board through the transportation mechanism, so as to achieve the function of transporting the circuit board to an external double-track device; in the above technology, when circuit boards of different sizes need to be transported, the driving member drives any one of the screw rods to rotate axially. Since a synchronizing member for driving the other screw rod to rotate synchronously when any one of the screw rods rotates is arranged between the two screw rods, the two screw rods rotate synchronously. The synchronous rotation of the two screw rods causes the two sliding seats to slide on their respective screw rods along the length directions of their respective screw rods. The two sliding seats are connected and cooperated with the same guide rail, so that the sliding of the two sliding seats drives the guide rail to move along the length direction of the screw rod, while the other guide rail is in a relatively fixed state, thereby realizing the adjustment of the distance between the two guide rails and then adapting to circuit boards of different sizes. The setting of the above technology can realize the synchronous rotation of the two screw rods only through the driving member and the synchronizing member, thereby improving the operation efficiency. At the same time, the setting of the ball screw has the characteristics of accurate positioning, fast movement and low noise, thereby improving the material transmission rate. In the above technology, the connecting member can temporarily connect the guide rail with any one of the tracks in the guide rail and the double-track device when the guide rail is aligned with the track, so as to facilitate the stable transportation of the circuit board to the track, thereby preventing the circuit board from falling from the gap between the track and the guide rail.

[0006] The utility model is further provided with: gears are connected to the end parts of the two screw rods, and a transmission chain is chain-driven between the two gears, and the transmission chain is the synchronizing member.

[0007] The advantages of adopting the above technical solution are as follows: In the above technology, the synchronous rotation of the two lead screws is achieved through the setting of gears and transmission chains, and the transmission accuracy and transmission efficiency are improved through the setting of gears and transmission chains, so as to cooperate with the driving member to achieve the synchronous rotation of the two lead screws.

[0008] The present utility model is further provided with: The driving member includes a driving motor arranged on the transfer bicycle. A transmission wheel is arranged at the starting end of any one of the lead screws, and a transmission belt is arranged between the output end of the driving motor and the transmission wheel through belt transmission.

[0009] The advantages of adopting the above technical solution are as follows: In the above technology, the rotation of the lead screw is achieved through the setting of the driving motor and the transmission wheel, and the synchronous rotation of the two lead screws is achieved through the cooperation of the synchronizing member. The rotation accuracy and rotation efficiency are improved through the setting of the transmission belt and the transmission wheel, thereby improving the movement accuracy and movement efficiency of the guide rail, so as to achieve precise adjustment of the distance between the two guide rails.

[0010] The present utility model is further provided with: The connecting member includes a connecting block and a fixing block detachably arranged on the guide rail. A swinging groove is formed in the fixing block, and the swinging groove is opened from the outer wall of the fixing block to the bottom wall of the fixing block. A rotating shaft is rotatably arranged in the swinging groove, and the end of the connecting block is arranged on the rotating shaft. A clamping groove for clamping and cooperating with the bottom of the sliding rail of the external tooling is formed on the end face of the starting end of the connecting block. A small motor for driving the connecting block to swing in a fan shape to make the clamping groove clamp or separate from the bottom of the sliding rail of the external tooling is arranged on the fixing block. The small motor is arranged on the outer wall of the fixing block, and the output end of the small motor is connected to the rotating shaft.

[0011] The advantages of adopting the above technical solution are as follows: When the transfer bicycle moves, the guide rail on the transfer bicycle gradually aligns with any one of the sliding rails on the double-rail equipment. After the guide rail and the sliding rail are aligned, the small motor starts and drives the rotating shaft to rotate, so that the rotating shaft drives the connecting block to swing in a fan shape. At this time, the connecting block quickly swings below the sliding rail and continues to swing upward so that the clamping groove is clamped and cooperated with the bottom of the sliding rail, so as to achieve the positioning and alignment between the guide rail and the sliding rail. Through the driving of the small motor, the connecting block and the sliding rail can be quickly cooperated and quickly separated, so that when the sliding rail and the guide rail are aligned, the connecting block can quickly cooperate with the sliding rail, so that the circuit board can quickly move through the connecting block under the driving of the transportation mechanism to the external double-rail equipment, so as to achieve the rapid transportation and precise transportation of the circuit board. Through the setting of the connecting block, it is ensured that the circuit board can be smoothly transported to the double-rail equipment or the single-rail equipment, thereby realizing the rapid and precise transportation of the circuit board, avoiding the circuit board from falling from the gap between the guide rail and the sliding rail, and at the same time avoiding phenomena such as shaking or offset of the circuit board at this gap.

[0012] The utility model is further provided with: slots are oppositely opened on the end faces of the connecting block, two of the slots are respectively arranged on both sides of the card slot and a plurality of guide wheels are rotatably arranged in the two slots, the guide wheels partially pass through the slots and form contact portions for contacting the bottom of an external circuit board.

[0013] The benefits of adopting the above technical solution are: the arrangement of several guide wheels in the above technology is used to ensure the rapid transportation of circuit boards, and the contact part is in contact with the bottom of the circuit board, so that the circuit board can be moved forward by the rolling of multiple guide wheels during transportation, thereby improving the smoothness and accuracy of the circuit board when passing through the gap between the guide rail and the slide rail, avoiding the circuit board from falling from the gap between the guide rail and the slide rail, and avoiding the circuit board from shaking or offsetting in the gap; the highest horizontal surface of the contact part of the above technology is flush with the end face of the guide rail, and the transportation mechanism in the prior art generally includes a conveyor belt assembly arranged on the end face of the guide rail, that is, the highest horizontal surface of the contact part can be flush with the surface of the conveyor belt according to actual installation requirements, so as to ensure smooth transmission of the circuit board.

[0014] The utility model is further configured that: expansion blocks for expansion-cooperating with the outer wall of the slide rail of the external tooling are arranged on the inner walls on both sides of the clamping slot, and the expansion blocks are made of elastic material.

[0015] The benefits of adopting the above technical solution are: in the above technology, the connection between the connecting block and the slide rail is achieved through the cooperation between the expansion block and the slide rail, and at the same time the expansion block is made of elastic material. When the slide rail and the slot are gradually engaged, the outer wall and the bottom wall of the slide rail will squeeze the expansion block, thereby achieving a relative expansion fit between the expansion block and the slide rail, thereby improving the connection strength between the slide rail and the expansion block.

[0016] The utility model is further configured as follows: the radial cross-section of the expansion block is triangular and the surface of the expansion block is an extrusion surface for contacting the outer wall of the slide rail of the external tooling; the gap between the two expansion blocks is matched to form a deformation groove for inserting the slide rail of the external tooling; the radial cross-section of the deformation groove is an inverted trapezoid.

[0017] The benefits of adopting the above technical solution are: in the above technology, the radial cross-section of the expansion block is set in a triangular shape and the surface of the expansion block is an extrusion surface for contacting the outer wall of the slide rail of the external tooling, thereby increasing the contact area between the expansion block and the outer wall of the slide rail and increasing the contact strength between the two, and the gap between the two expansion blocks is matched and a deformation groove is formed for the slide rail of the external tooling to be inserted. When the slide rail and the slot are matched, the expansion block will gradually deform and cause the deformation groove to gradually increase, thereby improving the connection strength between the expansion block and the slide rail.

[0018] The utility model is further configured that: fixing holes are provided at both ends of the guide rail, and fixing bolts are threadedly connected between the fixing blocks and the fixing holes.

[0019] The advantages of adopting the above technical solution are as follows: In the above technology, a fixing bolt is threadedly connected between the fixing block and the fixing hole, so as to realize the detachable setting of the fixing block on the guide rail, so that the operator can replace the connecting blocks of different sizes, that is, replace the connecting blocks of different lengths according to the distance between the guide rail and the sliding rail, or replace the connecting blocks with different groove widths according to the thickness of the sliding rail, thereby improving the adaptation range. Description of the Drawings

[0020] Figure 1 It is a three-dimensional view of the present invention;

[0021] Figure 2 is Figure 1 a three-dimensional view after removing the connection trolley;

[0022] Figure 3 It is a three-dimensional view of the connection trolley in the present invention;

[0023] Figure 4 It is a cross-sectional view of one side view of the connection trolley in the present invention;

[0024] Figure 5 It is a cross-sectional view of the other side view of the connection trolley in the present invention;

[0025] Figure 6 It is a three-dimensional view of the connection state of the connection block in the present invention;

[0026] Figure 7 It is a three-dimensional view of the non-connected state of the connection block in the present invention;

[0027] Figure 8 It is a simple view of the combined state of the present invention with external single-rail equipment and double-rail equipment. Detailed Implementation Modes

[0028] The utility model provides a circuit board transfer machine, which includes a transfer machine frame 1 and a transfer single vehicle 11 movably arranged on the transfer machine frame 1. A driving mechanism 12 is arranged on the transfer machine frame 1 for driving the transfer single vehicle 11 to make reciprocating sliding movement along the length direction of the transfer machine frame 1. Two guide rails 13 are oppositely arranged on the transfer single vehicle 11. A transport mechanism 14 for transporting circuit boards is arranged on the guide rails 13. Two ball screws 2 are oppositely arranged between the two guide rails 13. The ball screw 2 is composed of a screw rod 2 and a sliding seat 21 which is matched with the screw rod 2 and slides along the length direction of the screw rod 2. Both of the two sliding seats 21 are connected with one of the guide rails 13. The starting ends of the two screw rods 2 are rotatably connected to the other guide rail 13. A synchronizing member is connected between the ending ends of the two screw rods 2 for driving the other screw rod 2 to rotate synchronously when any one of the screw rods 2 rotates. A driving member is arranged on the transfer single vehicle 11 for driving any one of the screw rods 2 to rotate and cooperating with the synchronizing member to adjust the relative distance between the two guide rails 13. Connecting members are arranged at both ends of the two guide rails 13 for butting with the slide rails of external tooling and smoothly transporting circuit boards. Gear wheels 22 are connected to the ending ends of the two screw rods 2. A transmission chain 23 is chain-driven between the two gear wheels 22, and the transmission chain 23 is the synchronizing member. The driving member includes a driving motor 3 arranged on the transfer single vehicle 11. A transmission wheel 31 is arranged on the starting end of any one of the screw rods 2. A transmission belt 32 is belt-driven between the output end of the driving motor 3 and the transmission wheel 31. The connecting member includes a connecting block 4 and a fixing block 5 detachably arranged on the guide rail 13. A swinging groove 51 is formed on the fixing block 5, and the swinging groove 51 is opened from the outer wall of the fixing block 5 to the bottom wall of the fixing block 5. A rotating shaft is rotatably arranged in the swinging groove 51. The ending end of the connecting block 4 is arranged on the rotating shaft. A clamping groove 41 for clamping and cooperating with the bottom of the slide rail of external tooling is formed on the starting end face of the connecting block 4. A small motor 53 is arranged on the fixing block 5 for driving the connecting block 4 to make a sector-shaped swing so that the clamping groove 41 is clamped with or separated from the bottom of the slide rail of external tooling. The small motor 53 is arranged on the outer wall of the fixing block 5 and the output end of the small motor 53 is connected with the rotating shaft. Oppositely arranged slotted holes 42 are formed on the end face of the connecting block 4. The two slotted holes 42 are arranged on both sides of the clamping groove 41 and a plurality of guide wheels 421 are rotatably arranged in the two slotted holes 42. A contact part 422 for contacting with the bottom of the external circuit board is formed by the partial penetration of the guide wheels 421 out of the slotted holes 42. Tightening blocks 6 for tightly fitting with the outer wall of the slide rail of external tooling are arranged on the inner walls on both sides of the clamping groove 41. The tightening blocks 6 are made of elastic materials. The radial cross-section of the tightening blocks 6 is triangular and the surface of the tightening blocks 6 is an extrusion surface for contacting with the outer wall of the slide rail of external tooling. A deformation groove 61 for inserting the slide rail of external tooling is formed by the clearance fit between the two tightening blocks 6. The radial cross-section of the deformation groove 61 is trapezoidal in reverse. Fixing holes 131 are formed at both ends of the guide rail 13.A fixing bolt 132 is threadedly connected between the fixing block 5 and the fixing hole 131.

[0029] In the above technology, in order to adapt the guide rail, the thickness of the fixed block and the connecting block can be produced and configured according to the thickness of the guide rail, that is, the end faces of the fixed block and the connecting block are closer to the end faces of the belt in the transportation mechanism, so that the circuit board can be transported smoothly.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A circuit board transfer machine, comprising a transfer frame and a transfer vehicle movably arranged on the transfer frame, the transfer frame is provided with a driving mechanism for driving the transfer vehicle to make reciprocating sliding motion along the length direction of the transfer frame, the transfer vehicle is provided with two guide rails opposite to each other, and the guide rails are provided with a transport mechanism for transporting circuit boards, characterized in that: Two ball screws are arranged opposite to each other between the two guide rails, and the ball screw is composed of a screw and a sliding seat that cooperates with the screw and slides along the length direction of the screw part. The two sliding seats are connected to one of the guide rails, and the starting ends of the two screws are rotatably connected to the other guide rail. A synchronization member is connected between the ends of the two screws for driving the other screw to rotate synchronously when any one of the screws rotates. A driving member for driving any one of the screws to rotate and cooperating with the synchronization member to adjust the relative spacing between the two guide rails is provided on the transfer bicycle. Connecting members are provided at both ends of the two guide rails for connecting with the slide rails of external tooling and smoothly transmitting circuit boards.

2. A circuit board transfer machine according to claim 1, characterized in that: The ends of the two screw rods are connected with gears, and a transmission chain is chain-driven between the two gears, and the transmission chain is a synchronous component.

3. The circuit board transfer machine according to claim 1, characterized in that: The driving member comprises a driving motor arranged on the transfer vehicle, a transmission wheel is arranged on the starting end of any one of the screw rods, and a transmission belt is provided between the output end of the driving motor and the transmission wheel.

4. The circuit board transfer machine according to claim 1, characterized in that: The connecting piece includes a connecting block and a fixed block detachably arranged on the guide rail, the fixed block is provided with a swinging groove, the swinging groove is opened from the outer wall of the fixed block to the bottom wall of the fixed block, a rotating shaft is rotatably arranged in the swinging groove, the end of the connecting block is arranged on the rotating shaft, and the starting end face of the connecting block is provided with a slot for engaging with the bottom of the slide rail of the external tooling, the fixed block is provided with a small motor for driving the connecting block to swing in a fan shape so that the slot is engaged with or separated from the bottom of the slide rail of the external tooling, the small motor is arranged on the outer wall of the fixed block and the output end of the small motor is connected to the rotating shaft.

5. The circuit board transfer machine according to claim 4, characterized in that: The connecting block end surface is provided with slots opposite to each other, two of the slots are provided at both sides of the card slot and a plurality of guide wheels are rotatably provided in the two slots, the guide wheels partially pass through the slots and form contact portions for contacting the bottom of an external circuit board.

6. The circuit board transfer machine according to claim 4, characterized in that: The inner walls on both sides of the clamping slot are provided with expansion blocks for expansion-matching with the outer walls of the slide rails of the external tooling, and the expansion blocks are made of elastic material.

7. The circuit board transfer machine according to claim 6, characterized in that: The radial cross-section of the expansion block is triangular and the surface of the expansion block is an extrusion surface for contacting the outer wall of the slide rail of the external tooling. The gap between the two expansion blocks is matched to form a deformation groove for inserting the slide rail of the external tooling. The radial cross-section of the deformation groove is an inverted trapezoid.

8. The circuit board transfer machine according to claim 4, characterized in that: Both ends of the guide rail are provided with fixing holes, and fixing bolts are threadedly connected between the fixing blocks and the fixing holes.

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