PCB board automatic feeding and blocking device and no circular rail arbitrary angle workbench

Abstract

The present invention provides a PCB board automatic feeding and blocking device and a circular rail-free arbitrary angle workbench, which includes a base, a limiting mechanism, and an input line, a working line, and an output line for conveying PCB boards. The input line and the output line are lifted and lowered on the base, and the working line is located between the input line and the output line. The limiting mechanism includes a blocking plate, a limiting member, and a driving member. The PCB board is provided with a limiting hole corresponding to the limiting member. The driving member is provided on the input line or the output line, and the blocking plate and the limiting member are movably provided on one side of the working line. When the input line of the PCB board automatic feeding and blocking device of the present invention descends and docks with the working line, the input line and the limiting member can automatically release the PCB board. The blocking plate will block the conveying of the PCB board, and the driving member can drive the extrusion blocking plate to release the PCB board after the plug-in is completed. The operation is very efficient and the cost is low.

Description

Technical Field

[0001] The present invention relates to the field of plug-in machines, and in particular to an automatic feeding and blocking device for PCB boards and a circular rail-free arbitrary-angle workbench. Background Art

[0002] An insertion machine is a machine that automatically installs taped electronic components on a printed circuit board according to a program. The traditional electronic assembly industry mainly relies on workers to insert electronic components on circuit boards. Since the machines began to be mass-produced, the speed of manual insertion has been slow, and defects of poor workmanship have been exposed. Using an insertion machine to automatically install electronic components on a circuit board can save labor costs and improve the level of insertion technology. The use of an insertion machine for automatic insertion requires the use of a PCB board loading device, wherein the PCB board loading device generally has a baffle plate to block the conveyance of the PCB board and a pressing limiter to press the PCB board. However, the baffle plate and the pressing limiter in the prior art are driven separately by setting a corresponding driving mechanism, which is costly and inefficient.

[0003] Therefore, it is necessary to provide a PCB board automatic feeding and blocking device and a circular rail-free arbitrary angle workbench to solve the above technical problems. Summary of the Invention

[0004] The present invention provides a PCB automatic feeding and stopping device and a circular rail-free arbitrary-angle workbench, so as to solve the problems of high cost and low efficiency of the PCB feeding device in the prior art.

[0005] To solve the above technical problems, the technical solution of the present invention is as follows: an automatic feeding and stopping device for PCB boards, comprising a base, a limiting mechanism, and an input line body, a working line body, and an output line body for conveying PCB boards. The input line body and the output line body are arranged on the base in a lifting manner, and the working line body is located between the input line body and the output line body;

[0006] The limiting mechanism includes a baffle plate, a limiting member and a driving member, the PCB board is provided with a limiting hole corresponding to the limiting member, the driving member is provided on the input line body or the output line body, the baffle plate and the limiting member are movably arranged on one side of the working line body, the baffle plate includes a blocking position for blocking the conveying of the PCB board and a material avoidance position for releasing the PCB board on the movable track, and the limiting member includes a limiting position plugged with the limiting hole and a release position at a set distance from the limiting hole on the movable track;

[0007] When the input line body and the output line body descend and dock with the working line body, the driving member descends along with the input line body or the output line body and squeezes the limiting member to be located in the release position, at which time the baffle plate is located in the baffle position;

[0008] When the input line body and the output line body descend and dock with the working line body, the driving member can drive and squeeze the material baffle plate so that the material baffle plate is located at the material avoidance position;

[0009] When the input line body and the output line body rise to the set position, the limit member is located at the limit position, and the baffle plate is located at the baffle position.

[0010] In the present invention, the limiting mechanism also includes a rotating shaft, a connecting rod, a control block, and a torsion spring. The connecting rod is fixedly connected to the working line body, the rotating shaft is rotatably connected to the connecting rod, the control block is fixedly connected to one end of the rotating shaft close to the driving member, the baffle plate and the limiting member are both fixedly connected to the rotating shaft, the torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively connected to the control block and the connecting rod, and the torsion spring is used to drive the baffle plate and the limiting member to rotate in a direction close to the working line body.

[0011] Wherein, two of the limiting members are provided on the rotating shaft, and the limiting members include a limiting connecting plate, a bending portion and a limiting column, the bending portion is connected between the limiting connecting plate and the limiting column, and the bending portions of the two limiting members are bent in a direction away from each other, and a fixed block for connecting the limiting connecting plates is fixedly provided on the rotating shaft, the two limiting members are located between the two connecting rods, and the material blocking plate is located on the outside of the connecting rod.

[0012] The present invention also includes a workbench with no circular rail and arbitrary angle, which uses the above-mentioned PCB board automatic loading and stopping device, the working line body is set on the turntable, the working line body includes a fixed conveying track and a movable conveying track, the connecting rod connects the turntable and the fixed conveying track, the two ends of the movable conveying track are connected to the turntable, and the turntable is connected to the base through a horizontal moving module and a vertical moving module.

[0013] Furthermore, a plurality of fixing holes are arranged in a line on both sides of the turntable, and connecting blocks are provided at both ends of the movable conveying track, which are bent away from the fixed conveying track. A first elongated connecting hole corresponding to the fixing hole is provided on the connecting block, and a screw passes through the first elongated connecting hole and is fixedly connected to the fixing hole.

[0014] When the input line body and the output line body descend and dock with the working line body, the input line body and the output line body are in surface contact with the side surfaces of the connecting blocks at both ends of the movable conveying track respectively.

[0015] In addition, a stop mechanism is provided on the input line body, and the stop mechanism includes a stop plate, a rotating seat, and a movable block. The rotating seat is fixedly provided at one end of the input line body close to the working line body, and one end of the movable block is rotatably connected to the rotating seat. The stop plate is connected to the movable block, and the stop plate extends to the inner side of the input line body to block the transportation of the PCB board. The end of the movable block away from the rotating seat is located above the working line body. When the input line body descends and docks with the working line body, the working line body squeezes the movable block to rotate, so that the stop plate is away from the input line body to release the PCB board.

[0016] In which, a second elongated connecting hole is provided on the movable block, and a stud passes through the second elongated connecting hole to be connected to the input line body. A spring is sleeved on the stud, and the spring is compressed and arranged between the screw head of the stud and the movable block. A rubber roller for contacting the working line body is provided at one end of the movable block.

[0017] In the present invention, a positioning column is provided at one end of the output line body close to the working line body, a positioning plate is provided on the turntable, and a rubber block is provided on the positioning plate. When the output line body descends and docks with the working line body, the rubber block contacts the positioning column, and contact wheels for contacting the turntable are provided on both sides of the input line body and the output line body.

[0018] In the present invention, the turntable is arranged in the mounting hole of the mounting plate, and the inner wall of the mounting hole is provided with a radial guide wheel in the radial direction and an axial guide wheel in the axial direction. The radial guide wheel is in contact with the bottom surface of the turntable, and the axial guide wheel is in contact with the circumferential side surface of the turntable. A motor is provided at the bottom of the mounting plate, and a plurality of pulleys are provided at the bottom of the turntable. The motor and the plurality of pulleys are matched through belt transmission to drive the turntable to rotate.

[0019] In the present invention, the limiting mechanism further includes an elastic plate, an unlocking block, and a locking block. One end of the elastic plate is fixedly connected to the turntable. The unlocking block and the locking block are both arranged at the end of the elastic plate away from the turntable, and the unlocking block is located at the end of the locking block away from the turntable. The top of the locking block includes a locking surface, and the top of the unlocking block includes an unlocking inclined surface. The unlocking inclined surface is located on the active track of the output end of the driving member.

[0020] The limiting member and the control block are respectively located on both sides of the circumference of the rotating shaft. When the limiting member is located at the limiting position, the locking surface contacts the bottom of the control block at one end away from the limiting member to limit the limiting member from rotating in a direction away from the working line body. The unlocking inclined surface is located on a side of the unlocking block close to the driving member.

[0021] The driving member squeezes the control block so that before the limit member tilts up to the release position, the driving member can first squeeze the unlocking inclined surface so that the elastic plate is deformed in a direction away from the control block, thereby causing the locking surface to break contact with the control block.

[0022] Compared with the prior art, the present invention has the following beneficial effects: when the input line body of the PCB board automatic feeding and blocking device of the present invention descends and docks with the working line body, the input line body and the limit member can automatically release the PCB board, the blocking plate will block the transportation of the PCB board, and the driving member can drive the extrusion blocking plate to release the PCB board after the plug-in is completed, the operation is very efficient and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0024] Figure 1 This is a structural diagram of the arbitrary-angle workbench without circular rails of the present invention when it is applied to an insertion machine.

[0025] Figure 2 The figure is a schematic structural diagram of the working line of the automatic PCB board feeding and blocking device of the present invention.

[0026] Figure 3 for Figure 2 An enlarged view of the local structure at the limiter.

[0027] Figure 4 This is a structural diagram of a locking block provided at a limiting member.

[0028] Figure 5 This is a schematic structural diagram of the input line of the automatic PCB board feeding and blocking device of the present invention.

[0029] Figure 6 This is an enlarged view of the local structure of the positioning post on the output line body in the present invention.

[0030] Figure 7 This is a structural schematic diagram of the bottom view of the workbench without circular rails and at any angle in the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used with reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0033] The terms "first" and "second" in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be used as a limitation on the order of precedence.

[0034] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, connection can be a detachable connection or an integral structural connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In the prior art, the material baffle plate and the pressing and limiting member are driven to move individually by providing corresponding driving mechanisms, which results in high cost and low efficiency.

[0036] The following is a preferred embodiment of a circular rail-free arbitrary angle workbench provided by the present invention that can solve the above technical problems.

[0037] Please refer to Figure 1 and Figure 2 ,in Figure 1 The figure is a schematic structural diagram of the automatic PCB board feeding and blocking device of the present invention when applied to an insertion machine. Figure 2 The figure is a schematic structural diagram of the working line of the automatic PCB board feeding and blocking device of the present invention.

[0038] In the figures, structurally similar elements are denoted by the same reference numerals.

[0039] The present invention provides a circular rail-free arbitrary-angle workbench, which comprises a PCB board automatic feeding and blocking device, a turntable 1A and a mounting plate 1F.

[0040] The PCB automatic loading and stopping device includes an insertion machine that includes an automatic loading and stopping device for PCB boards, an insertion device 14, a shearing device 15, and a conveyor chain mechanism 13 for conveying electronic components to the insertion device 14. A crossbeam 111 is mounted on the base 11. One end of the conveyor chain mechanism 13 rests on this crossbeam 111, and a material station 12 for providing a variety of electronic components is located at the other end of the conveyor chain mechanism 13. The insertion device 14 receives electronic components from the conveyor chain mechanism 13, shears them with the shearing device 15, and then inserts them into the PCB board on the automatic loading and stopping device.

[0041] Among them, the automatic loading and stopping device for PCB boards includes a limiting mechanism 19, and an input line body 16, a working line body 17, and an output line body 18 for conveying PCB boards. The input line body 16 and the output line body 18 are raised and lowered on the base 11, and the working line body 17 is located between the input line body 16 and the output line body 18.

[0042] Please refer to Figure 2 The limiting mechanism 19 includes a baffle plate 191, a limiting member 192 and a driving member 197. The driving member 197 in this embodiment is a cylinder. A limiting hole corresponding to the limiting member 192 is provided on the PCB board. The driving member 197 is arranged on the input line body 16 or the output line body 18 (the driving member 197 in this embodiment is arranged on the input line body 16). The baffle plate 191 and the limiting member 192 are movably arranged on one side of the working line body 17.

[0043] The material blocking plate 191 includes a blocking position for blocking the PCB board from being conveyed and a material avoiding position for releasing the PCB board on the movable track. The limiting member 192 includes a limiting position for being plugged into the limiting hole and a releasing position at a set distance from the limiting hole on the movable track.

[0044] When the input line 16 and the output line 18 descend and dock with the working line 17, the driving member 197 descends along with the input line 16 or the output line 18 and presses the stop member 192 to the release position. At this time, the material blocking plate 191 is in the material blocking position. Now, the PCB can be transferred from the input line 16 to the working line 17 and is blocked by the material blocking plate 191.

[0045] When the input line 16 and the output line 18 descend and dock with the working line 17, the driving member 197 can be started to drive the extrusion baffle plate 191 to tilt up, so that the baffle plate 191 is located at the material avoidance position. At this time, the PCB board that has completed the plug-in operation can be transported from the working line 17 to the output line 18 for unloading operation.

[0046] When the input line body 16 and the output line body 18 rise to the set position, the limit member 192 is located at the limit position and the material blocking plate 191 is located at the material blocking position. At this time, the PCB board conveyed to the working line body 17 can be blocked, and the PCB board can be fixed by the limit member 192 and the limit hole on the PCB board to perform the plug-in operation.

[0047] Please refer to Figure 2 Specifically, the limiting mechanism 19 also includes a rotating shaft 193, a connecting rod 194, a control block 195, and a torsion spring 196. The connecting rod 194 is fixedly connected to the working line body 17, the rotating shaft 193 is rotatably connected to the connecting rod 194, the control block 195 is fixedly connected to one end of the rotating shaft 193 close to the driving member 197, the baffle plate 191 and the limiting member 192 are both fixedly connected to the rotating shaft 193, the torsion spring 196 is sleeved on the rotating shaft 193, and the two ends of the torsion spring 196 are respectively connected to the control block 195 and the connecting rod 194. The torsion spring 196 is used to drive the baffle plate 191 and the limiting member 192 to rotate in a direction close to the working line body 17, that is, the torsion spring 196 is used to drive the baffle plate 191 to the material blocking position and drive the limiting member 192 to the limit position.

[0048] Please refer to Figure 3 In this embodiment, two limit members 192 are provided on the rotating shaft 193, and the limit members 192 include a limit connecting plate 1921, a bending portion 1922 and a limit column 1923. The bending portion 1922 is connected between the limit connecting plate 1921 and the limit column 1923. The bending portions 1922 of the two limit members 192 are bent in a direction away from each other. A fixed block 198 for connecting the limit connecting plate 1921 is fixedly provided on the rotating shaft 193. The two limit members 192 are located between the two connecting rods 194, and the baffle plate 191 is located on the outside of the connecting rod 194. The structure is more compact, and the limit hole on the PCB board can be set closer to its edge.

[0049] The limiting connecting plate 1921 is provided with an elongated hole for adjustably connecting with the fixing block 198 so as to adjust the position of the limiting member 192 relative to the PCB board.

[0050] In this embodiment, the working line body 17 is set on the turntable 1A, and the working line body 17 includes a fixed conveying track 171 and a movable conveying track 172. The connecting rod 194 connects the turntable 1A and the fixed conveying track 171, and the two ends of the movable conveying track 172 are connected to the turntable 1A.

[0051] For details, please refer to Figure 2A plurality of fixing holes 1A1 are arranged in a line on both sides of the turntable 1A, and connecting blocks 1721 are provided at both ends of the movable conveying rail 172, which are bent away from the fixed conveying rail 171. The connecting block 1721 is provided with a first elongated connecting hole 1722 corresponding to the fixing hole 1A1, and a screw passes through the first elongated connecting hole 1722 and is fixedly connected to the fixing hole 1A1.

[0052] By adjusting the connection position between the movable conveying track 172 and the turntable 1A, the distance between the fixed conveying track 171 and the movable conveying track 172 can be adjusted to convey PCB boards of different sizes.

[0053] Correspondingly, the input line body 16 and the output line body 18 can also be fixedly set with a fixed conveying track and slidably set with a movable conveying track, so that the width of the two can be adjusted so that they can input and output PCB boards of different sizes.

[0054] The turntable 1A is connected to the base 11 through a transverse moving module and a longitudinal moving module, so that it can drive the PCB board on the working line 17 to rotate and translate to perform plug-in operations at different positions and orientations on the PCB board.

[0055] Please refer to Figure 5 In this embodiment, a stop mechanism is provided on the input line 16. The stop mechanism comprises a stop plate 1B1, a rotating base 1B2, and a movable block 1B3. The rotating base 1B2 is fixedly mounted on the end of the input line 16 near the working line 17. One end of the movable block 1B3 is rotatably connected to the rotating base 1B2. The stop plate 1B1 is connected to the movable block 1B3 and extends to the inside of the input line 16 to block the PCB from being transported.

[0056] The end of the movable block 1B3, away from the rotating base 1B2, is located above the working line 17. When the input line 16 descends and docks with the working line 17, the working line 17 squeezes the movable block 1B3 and rotates it, moving the stop plate 1B1 away from the input line 16. When the input line 16 descends and docks with the working line 17, the PCB is automatically released, making the process highly efficient and cost-effective.

[0057] Among them, a second long strip connecting hole is provided on the movable block 1B3, and the stud 1B4 passes through the second long strip connecting hole and is connected to the input line body 16. A spring is sleeved on the stud 1B4, and the spring is compressed and arranged between the screw head of the stud 1B4 and the movable block 1B3. The driving force of the spring enables the stop plate 1B1 to remain extended to the inner side of the input line body 16 to block the PCB board.

[0058] One end of the movable block 1B3 is provided with a rubber roller 1B5 for contacting the working line body 17. The working line body 17 squeezes the rubber roller 1B5 to make the movable block 1B3 rotate, which reduces friction and is quieter.

[0059] Please refer to Figure 6 In this embodiment, a positioning column 1E is provided at one end of the output line body 18 close to the working line body 17, a positioning plate 1D is provided on the turntable 1A, and a rubber block is provided on the positioning plate 1D. When the output line body 18 descends and docks with the working line body 17, the rubber block 1D1 contacts the positioning column 1E, and contact wheels 1C for contacting the turntable 1A are provided on both sides of the input line body 16 and the output line body 18, so that the docking is very stable, and the input line body 16 and the output line body 18 are not prone to shaking and affecting the transportation.

[0060] In this embodiment, when the input line body 16 and the output line body 18 descend and dock with the working line body 17, the input line body 16 and the output line body 18 are in surface contact with the side surfaces of the connecting blocks 1721 at both ends of the movable conveying track 172, respectively, making the alignment very stable.

[0061] Please refer to Figure 1 and Figure 7 In this embodiment, turntable 1A is mounted within a mounting hole in mounting plate 1F. The inner wall of the mounting hole is radially provided with a radial guide pulley 1F2 and axially provided with an axial guide pulley 1F1. Radial guide pulley 1F2 contacts the bottom surface of turntable 1A, while axial guide pulley 1F1 contacts the circumferential surface of turntable 1A. A motor 1G is mounted at the bottom of mounting plate 1F, and multiple pulleys 1G2 are mounted at the bottom of turntable 1A. Belt 1G1 drives motor 1G and multiple pulleys 1G2 to rotate turntable 1A. Motor 1G is a servo motor that can achieve servo-driven rotation of turntable 1A at any angle. Insertion and insertion operations can be performed at any angle, improving insertion direction compatibility.

[0062] Please refer to Figure 4 In this embodiment, since the torsion spring 196 drives the limiting member 192 to engage with the limiting hole of the PCB to form a press fit, the PCB may still wobble up and down during the insertion process, affecting the insertion effect. Therefore, the limiting mechanism 19 of this embodiment also includes an elastic plate 199, an unlocking block 19A, and a locking block 19B.

[0063] One end of the elastic plate 199 is fixedly connected to the turntable 1A, and the unlocking block 19A and the locking block 19B are both arranged at the end of the elastic plate 199 away from the turntable 1A, and the unlocking block 19A is located at the end of the locking block 19B away from the turntable 1A, the top of the locking block 19B includes a locking surface, and the top of the unlocking block 19A includes an unlocking inclined surface, and the unlocking inclined surface is located on the active track of the output end of the driving member 197.

[0064] The limit member 192 and the control block 195 are respectively located on both sides of the circumference of the rotating shaft 193. When the limit member 192 is in the limit position, the locking surface contacts the bottom of the control block 195 away from the end of the limit member 192 to limit the limit member 192 from rotating in the direction away from the working line body 17, so that the limit member 192 can stably press and limit the PCB board, is not easy to shake, and has a good plug-in effect.

[0065] The unlocking inclined surface is located on the side of the unlocking block 19A close to the driving member 197. When the output end of the driving member 197 squeezes the control block 195 so that the limit member 192 is tilted to the release position, the driving member 197 will first squeeze the unlocking inclined surface, causing the elastic plate 199 to deform in the direction away from the control block 195, thereby causing the locking surface to disengage from the control block 195, thereby releasing the restriction of the locking block 19B on the control block 195.

[0066] The working process of the PCB board automatic feeding and stopping device of the present invention is as follows: when the input line body 16 and the output line body 18 descend from a high position and dock with the working line body 17, the driving member 197 descends with the input line body 16 and squeezes the limit member 192 to be in the released position.

[0067] Then, by starting the driving member 197, the extrusion baffle plate 191 can be driven to tilt up, so that the baffle plate 191 is located at the material avoidance position. At this time, the PCB board that has completed the plug-in operation can be transported from the working line body 17 to the output line body 18 for unloading operation.

[0068] Then, the driving member 197 stops extending and driving and returns to the initial position. At this time, the limit member 192 is in the release position, the baffle plate 191 is in the baffle position, and the new PCB board is transported from the input line 16 to the working line 17 and is blocked by the baffle plate 191.

[0069] Finally, the input line body 16 and the output line body 18 rise, and the torsion spring 196 can drive the limit member 192 to the limit position and drive the material blocking plate 191 to the material blocking position. At this time, the PCB board conveyed to the working line body 17 can be blocked, and the PCB board can be fixed by the limiting cooperation between the limit member 192 and the limiting hole on the PCB board, and the working line body 17 can be controlled to move or rotate to perform various plug-in operations.

[0070] When a locking block 19B is set under the control block, the locking surface of the locking block 19B will contact the bottom of the control block 195 away from the end of the limiter 192, thereby limiting the limiter 192 from rotating in the direction away from the working line 17, so that the limiter 192 can stably press and limit the PCB board, is not prone to shaking, and has a good plug-in effect.

[0071] In the automatic PCB board feeding and stopping device of this preferred embodiment, when the input line body descends and docks with the working line body, the input line body and the limit member can automatically release the PCB board. The stop plate will block the transportation of the PCB board, and the driving member can drive the extrusion stop plate to release the PCB board after the plug-in is completed. The work is very efficient and the cost is low.

[0072] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A PCB board automatic feeding and blocking device, characterized in that: It includes a base, a limiting mechanism, and an input line body, a working line body, and an output line body for conveying PCB boards. The input line body and the output line body are lifted and lowered on the base, and the working line body is located between the input line body and the output line body. The limiting mechanism includes a baffle plate, a limiting member and a driving member, the PCB board is provided with a limiting hole corresponding to the limiting member, the driving member is provided on the input line body or the output line body, the baffle plate and the limiting member are movably arranged on one side of the working line body, the baffle plate includes a blocking position for blocking the conveying of the PCB board and a material avoidance position for releasing the PCB board on the movable track, and the limiting member includes a limiting position plugged with the limiting hole and a release position at a set distance from the limiting hole on the movable track; When the input line body and the output line body descend and dock with the working line body, the driving member descends along with the input line body or the output line body and squeezes the limiting member to be located in the release position, at which time the baffle plate is located in the baffle position; When the input line body and the output line body descend and dock with the working line body, the driving member can drive and squeeze the material baffle plate so that the material baffle plate is located at the material avoidance position; When the input line body and the output line body rise to the set position, the limit member is located at the limit position, and the baffle plate is located at the baffle position; The limiting mechanism also includes a rotating shaft, a connecting rod, a control block, and a torsion spring. The connecting rod is fixedly connected to the working line body, the rotating shaft is rotatably connected to the connecting rod, the control block is fixedly connected to one end of the rotating shaft close to the driving member, the baffle plate and the limiting member are both fixedly connected to the rotating shaft, the torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively connected to the control block and the connecting rod, and the torsion spring is used to drive the baffle plate and the limiting member to rotate in a direction close to the working line body.

2. The PCB board automatic feeding and stopping device according to claim 1, characterized in that: Two limiting members are provided on the rotating shaft, and the limiting members include a limiting connecting plate, a bending portion and a limiting column. The bending portion is connected between the limiting connecting plate and the limiting column, and the bending portions of the two limiting members are bent in a direction away from each other. A fixed block for connecting the limiting connecting plates is fixedly provided on the rotating shaft, and the two limiting members are located between the two connecting rods, and the material blocking plate is located on the outside of the connecting rod.

3. A workbench with any angle and without circular rail, characterized in that: Using the automatic loading and stopping device for PCB boards as described in claim 2, the working line body is set on the turntable, the working line body includes a fixed conveying track and a movable conveying track, the connecting rod connects the turntable and the fixed conveying track, the two ends of the movable conveying track are connected to the turntable, and the turntable is connected to the base through a horizontal moving module and a vertical moving module.

4. The workbench without circular rail and capable of any angle according to claim 3, characterized in that: A plurality of fixing holes are arranged in a line on both sides of the turntable, and connecting blocks are provided at both ends of the movable conveying track, which are bent in a direction away from the fixed conveying track. The connecting blocks are provided with first elongated connecting holes corresponding to the fixing holes, and screws are passed through the first elongated connecting holes to be fixedly connected to the fixing holes; When the input line body and the output line body descend and dock with the working line body, the input line body and the output line body are in surface contact with the side surfaces of the connecting blocks at both ends of the movable conveying track respectively.

5. The workbench without circular rail and capable of any angle according to claim 3, characterized in that: A stopping mechanism is provided on the input line body, and the stopping mechanism includes a stopping plate, a rotating seat, and a movable block. The rotating seat is fixedly provided on one end of the input line body close to the working line body, and one end of the movable block is rotatably connected to the rotating seat. The stopping plate is connected to the movable block, and the stopping plate extends to the inner side of the input line body to block the conveying of the PCB board. The end of the movable block away from the rotating seat is located above the working line body. When the input line body descends and docks with the working line body, the working line body squeezes the movable block to rotate, so that the stopping plate is away from the input line body to release the PCB board.

6. The workbench without circular rail and capable of any angle according to claim 5, characterized in that: A second elongated connecting hole is provided on the movable block, and a stud passes through the second elongated connecting hole to be connected to the input line body. A spring is sleeved on the stud, and the spring is compressed and arranged between the screw head of the stud and the movable block. A rubber roller for contacting the working line body is provided at one end of the movable block.

7. The circular rail-free arbitrary angle workbench according to claim 3, characterized in that: A positioning column is provided at one end of the output line body close to the working line body, a positioning plate is provided on the turntable, and a rubber block is provided on the positioning plate. When the output line body descends and docks with the working line body, the rubber block contacts the positioning column, and contact wheels for contacting the turntable are provided on both sides of the input line body and the output line body.

8. The circular rail-free arbitrary angle workbench according to claim 3, characterized in that: The turntable is arranged in the mounting hole of the mounting plate, and the inner wall of the mounting hole is provided with a radial guide wheel in the radial direction and an axial guide wheel in the axial direction. The radial guide wheel is in contact with the bottom surface of the turntable, and the axial guide wheel is in contact with the circumferential side surface of the turntable. A motor is provided at the bottom of the mounting plate, and a plurality of pulleys are provided at the bottom of the turntable. The motor and the plurality of pulleys are matched through belt transmission to drive the turntable to rotate.

9. The circular rail-free arbitrary angle workbench according to claim 3, characterized in that: The limiting mechanism further includes an elastic plate, an unlocking block, and a locking block, one end of the elastic plate is fixedly connected to the turntable, the unlocking block and the locking block are both arranged at the end of the elastic plate away from the turntable, and the unlocking block is located at the end of the locking block away from the turntable, the top of the locking block includes a locking surface, the top of the unlocking block includes an unlocking inclined surface, and the unlocking inclined surface is located on the active track of the output end of the driving member; The limiting member and the control block are respectively located on both sides of the circumference of the rotating shaft. When the limiting member is located at the limiting position, the locking surface contacts the bottom of the control block at one end away from the limiting member to limit the limiting member from rotating in a direction away from the working line body. The unlocking inclined surface is located on a side of the unlocking block close to the driving member. The driving member squeezes the control block so that before the limit member tilts up to the release position, the driving member can first squeeze the unlocking inclined surface so that the elastic plate is deformed in a direction away from the control block, thereby causing the locking surface to break contact with the control block.

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