Laterally-mounted pneumatic blocking mechanism of roller conveying line
By using the torsion spring and buffer plate design of the pneumatic blocking mechanism, the problem of pallet and cargo displacement and deformation in the roller conveyor line is solved, and stable and accurate pallet docking is achieved.
Patent Information
- Application Number
- CN202511294611.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2025-11-11
AI Technical Summary
The baffles on existing roller conveyor lines can easily cause pallets and goods to shift and deform when blocking goods, affecting the accuracy of the stopping position.
The pneumatic blocking mechanism utilizes the design of torsion springs and buffer plates. The torsion springs accumulate elastic potential energy to buffer the impact force of the pallet during the blocking process. The combination of limit components and guide strips ensures the stability and precise docking of the pallet.
It reduces the impact force between the pallet and the goods during the blocking process, reduces pallet deformation, and improves the accuracy and stability of the docking position.
Smart Images
Figure CN120922585A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of logistics and transportation technology, and in particular to a pneumatic blocking mechanism for lateral installation on a roller conveyor line. Background Technology
[0002] Roller conveyor lines are continuous conveying equipment that uses rollers as the transport carrier. They are mainly suitable for the transfer of unitized goods such as boxes and pallets.
[0003] Patent document CN214779131U discloses a blocking mechanism for a roller conveyor line. The roller conveyor line includes a frame and idlers. The blocking mechanism includes a fixed part, a telescopic part, a first connecting rod, a second connecting rod, and a stop bar. The fixed part is mounted on the frame. The first connecting rod and the second connecting rod are parallel and of equal length. One end of the first connecting rod is rotatably connected to the fixed part, and the other end is rotatably connected to the stop bar. One end of the second connecting rod is rotatably connected to the fixed part, and the other end is rotatably connected to the stop bar. The telescopic part is rotatably connected to the fixed part, and the other end is rotatably connected to the stop bar, for driving the stop bar through the gap between the idlers to block objects.
[0004] In existing technologies, when conveying goods by rollers, a stop bar is usually used to move and rise between adjacent rollers to block the goods, thereby achieving the positioning and precise stopping of the goods. When a traditional stop bar blocks a pallet on which the goods are placed, the sudden rigid impact can easily cause the goods and the pallet to shift. Furthermore, in the long-term rigid blocking collision, the pallet is prone to deformation, which can cause changes in the blocking position and affect the accuracy of the stopping position. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pneumatic blocking mechanism for lateral installation on a roller conveyor line.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a pneumatic blocking mechanism for lateral installation on a roller conveyor line, comprising a base, a placement groove on the top of the base, a blocking plate inside the placement groove, a rotating shaft fixedly connected to one end of the blocking plate, the rotating shaft being rotatably connected to the base, a receiving groove on the blocking plate, a connecting shaft fixedly connected to the center of the receiving groove, a fixed ring fixedly connected to the center of the connecting shaft, and movable rings rotatably connected to both ends of the connecting shaft respectively;
[0007] A torsion spring is fixedly installed between the fixed ring and the two movable rings. A buffer plate and a pressing rod are fixedly connected to the surface of the movable ring along the circumferential direction. The buffer plate and the pressing rod are flush with the two sides of the blocking plate, and the pressing rod contacts and presses against the bottom surface of the placement groove.
[0008] A driving component is provided on the base, which is used to drive the blocking plate to rotate 90 degrees. A limiting component is provided on the buffer plate, which limits the buffer plate when the blocking plate is in the rotated state and returns to the storage slot.
[0009] Preferably, the limiting component includes two mounting strips, both of which are disposed at one end of the blocking plate. Two limiting pins are slidably inserted into the mounting strips, and the limiting pins are fixedly connected to the blocking plate. A first spring is sleeved on each limiting pin, and the first spring is fixedly connected between the corresponding mounting strip and one end of the limiting pin. An arc-shaped pin is fixedly connected to each mounting strip. An arc-shaped groove is formed at one end of the buffer plate, and the arc-shaped end of each arc-shaped pin passes through the blocking plate and is positioned opposite to the corresponding arc-shaped groove.
[0010] A guide strip is fixedly connected to one end of the base. A guide slope is provided at the end of the guide strip near the baffle plate. A fixing strip is fixedly connected to each mounting strip. A pressing pin is fixedly connected to the fixing strip. One end of the pressing pin is in contact with the corresponding guide strip.
[0011] Preferably, one end of each extrusion pin is provided with a spherical groove, and a contact ball is rolled inside the spherical groove.
[0012] Preferably, each of the two movable rings has a fan-shaped groove at one end that is far apart from each other, and two fan-shaped blocks are fixedly connected to the surface of the connecting shaft. The fan-shaped blocks are located inside the corresponding fan-shaped grooves and are in contact with one side of the fan-shaped grooves.
[0013] Preferably, the two buffer plates have a rounded edge profile on the sides that are far apart from each other.
[0014] Preferably, the driving assembly includes a strip groove formed at the bottom of the base and connected to the placement groove. A slider is slidably connected inside the strip groove. A movable strip is provided between the slider and the blocking plate. The two ends of the movable strip are respectively hinged to the bottom of the blocking plate and one side of the slider. A cylinder is fixedly installed at the bottom of the base, and a movable connecting assembly is provided between the piston shaft of the cylinder and the slider.
[0015] Preferably, a transverse baffle is fixedly connected to one end of the base, the transverse baffle is located at one end of the placement groove, two longitudinal baffles are provided below the base, the longitudinal baffles are slidably inserted into the base and the top of the longitudinal baffles are flush with the bottom surface of the placement groove, the bottom of the longitudinal baffles are fixedly connected to a fixing block, and a circular pin is fixedly inserted into the fixing block. Two guide plates are provided between the two fixing blocks, and each guide plate has a guide groove, the guide groove including a horizontal section and an inclined section. The circular pin is located inside the corresponding horizontal section, and both guide plates are connected to the movable connecting assembly.
[0016] Preferably, the movable connecting assembly includes a rectangular frame, which is fixedly connected to the bottom of the slider. A fixed plate is slidably connected inside the rectangular frame. The piston shaft of the cylinder is fixedly connected to the fixed plate. A light rod is fixedly connected inside the rectangular frame and slidably inserted into the fixed plate. A second spring is sleeved on the light rod. The second spring is fixedly connected between the fixed plate and the inner wall of the rectangular frame. Two guide plates are respectively fixedly connected to both sides of the fixed plate.
[0017] Preferably, the force exerted by the cylinder when it drives the blocking plate to flip is less than the yield point of the second spring.
[0018] Preferably, a mounting bracket is fixedly connected to the base, and the mounting bracket has multiple mounting holes.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. During the torsion process, the torsion spring accumulates elastic potential energy, so that when the baffle plate flips vertically and blocks the pallet, the pallet comes into contact with the buffer plate first. The impact generated by the blocking is buffered by the movement of the buffer plate and the torsion action of the torsion spring, thereby reducing the impact force on the pallet during the blocking process, preventing the pallet and goods from shifting, reducing the deformation damage to the pallet caused by the impact, and improving the accuracy of the pallet and goods docking position.
[0021] 2. When the drive assembly drives the blocking plate to flip in the opposite direction and return to the inside of the storage slot, the limiting assembly releases the limiting effect on the buffer plate. At this time, the bottom of the slot contacts the compression rod to prevent the buffer plate from moving out of the storage slot, ensuring that the tray can pass smoothly over the blocking plate and the buffer plate. When the blocking plate flips to block again, the torsion spring that has been twisted can release its elastic potential energy smoothly, and the buffer plate can continue to move outward from the inside of the storage slot.
[0022] 3. When the blocking plate flips back into the placement slot, it continues to guide the squeezing pin through the guide slope at one end of the guide bar, so that the squeezing pin moves to the surface of the guide bar, thereby causing the arc-shaped pin to disengage from the arc-shaped slot and release the limit on the buffer plate, ensuring that the buffer plate can move smoothly out of the storage slot when the blocking plate flips back to block it again. Attached Figure Description
[0023] Figure 1 This is a top-view structural diagram of the present invention;
[0024] Figure 2 This is a schematic diagram of the structure from a low angle of view of the present invention;
[0025] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;
[0026] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the diagram;
[0027] Figure 5 This is a schematic diagram of the first cross-sectional structure of the present invention;
[0028] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C;
[0029] Figure 7 This is a schematic diagram of the second cross-sectional structure of the present invention;
[0030] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point D;
[0031] Figure 9 This is a schematic diagram of the mating structure of the connecting shaft, buffer plate, and extrusion rod of the present invention;
[0032] Figure 10 This is a schematic diagram of the mating structure of the buffer plate and the compression rod of the present invention;
[0033] Figure 11 This is a schematic diagram of the combined structure of the base, the transverse baffle, and the longitudinal baffle of the present invention.
[0034] In the diagram: 1. Base; 2. Placement slot; 3. Baffle plate; 4. Rotating shaft; 5. Storage slot; 6. Connecting shaft; 7. Fixed ring; 8. Moving ring; 9. Torsion spring; 10. Buffer plate; 11. Pressing rod; 12. Mounting strip; 13. Limiting pin; 14. First spring; 15. Arc-shaped pin; 16. Arc-shaped groove; 17. Guide strip; 18. Fixed strip; 19. Pressing pin; 20. Spherical groove; 21. Contact ball; 22. 23. Sector-shaped groove; 24. Sector-shaped stop block; 25. Strip groove; 26. Slider; 27. Movable bar; 28. Cylinder; 29. Horizontal stop bar; 30. Longitudinal stop bar; 31. Fixed block; 32. Circular pin; 33. Guide plate; 34. Guide groove; 35. Horizontal section; 36. Inclined section; 37. Rectangular frame; 38. Fixed plate; 39. Smooth rod; 30. Second spring; 31. Mounting bracket; 30. Mounting hole. Detailed Implementation
[0035] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.
[0036] like Figures 1 to 11 The pneumatic blocking mechanism for a roller conveyor line, shown, includes a base 1. A placement groove 2 is formed on the top of the base 1. A blocking plate 3 is disposed inside the placement groove 2. A rotating shaft 4 is fixedly connected to one end of the blocking plate 3, and the rotating shaft 4 is rotatably connected to the base 1. A receiving groove 5 is formed on the blocking plate 3, and a connecting shaft 6 is fixedly connected to the center of the receiving groove 5. Figure 5 and Figure 9 As shown, a fixed ring 7 is fixedly connected to the center of the connecting shaft 6, and movable rings 8 are rotatably connected to both ends of the connecting shaft 6.
[0037] A torsion spring 9 is fixedly installed between the fixed ring 7 and the two movable rings 8. A buffer plate 10 and a pressing rod 11 are fixedly connected to the surface of the movable ring 8 along the circumferential direction. The buffer plate 10 and the pressing rod 11 are flush with the two sides of the baffle plate 3 respectively. The pressing rod 11 contacts and presses the bottom surface of the placement groove 2.
[0038] A drive assembly is provided on the base 1. The drive assembly is used to drive the blocking plate 3 to rotate 90 degrees. A limit assembly is provided on the buffer plate 10. When the blocking plate 3 is in the rotated state, it limits the buffer plate 10 that has returned to the storage slot 5.
[0039] The base 1 is installed on the roller conveyor line and located between two adjacent rollers. When the pallet containing the goods is conveyed along the surface of the roller conveyor line, the drive assembly drives the baffle 3 to rotate 90 degrees and stand vertically. During the rotation of the baffle 3, the receiving groove 5 moves away from the placement groove 2, so that the buffer plate 10 and the squeezing rod 11 rotate synchronously with the baffle 3. The bottom surface of the placement groove 2 gradually releases the contact squeezing action on the squeezing rod 11. At the same time, the torsion spring 9, which is in a torsional state, begins to release elastic potential energy and drives the movable ring 8 to rotate along the rotation connection of the connecting shaft 6. The movable ring 8 drives the corresponding buffer plate 10 and squeezing rod 11 to rotate synchronously, so that both buffer plates 10 move outward along one side of the receiving groove 5, and the two squeezing rods 11 move outward along the other side of the receiving groove 5.
[0040] As the pallet moves along the roller conveyor line and approaches the buffer plate 10, the impact force generated by the contact causes the two buffer plates 10 to move back into the receiving groove 5. At the same time, the movable ring 8 rotates in the opposite direction along the rotating connection of the connecting shaft 6, and drives the torsion spring 9 to twist. During the twisting process, the torsion spring 9 accumulates elastic potential energy. Thus, when the blocking plate 3 flips vertically and blocks the pallet, the pallet is the first to contact the buffer plate 10. The movement of the buffer plate 10 and the torsion action of the torsion spring 9 buffer the impact generated by the blocking, thereby reducing the impact force on the pallet during the blocking process, preventing the pallet from shifting between the pallet and the goods, reducing the deformation damage to the pallet caused by the impact, and improving the accuracy of the pallet and goods docking position.
[0041] When the pallet compression buffer plate 10 is fully inserted into the storage slot 5, the buffer plate 10 is flush with one side of the blocking plate 3. At this time, the buffer plate 10 is limited inside the storage slot 5 by the action of the limiting component. The blocking plate 3 continues to block the pallet, ensuring that after the buffer plate 10 provides elastic cushioning to the pallet, the torsion spring 9, which has twisted, cannot release its elastic potential energy and therefore cannot drive the buffer plate 10 to continue moving out of the storage slot 5. This ensures that the pallet will not be pushed in the opposite direction by the blocking plate 3 during the blocking process, ensuring the stability of the pallet and the goods during the blocking process. When the drive component drives the blocking plate 3 to flip in the opposite direction and return to the storage slot 5, the limiting component releases its limiting effect on the buffer plate 10. At this time, the bottom of the placement slot 2 contacts the compression rod 11 to prevent the buffer plate 10 from moving out of the storage slot 5, ensuring that the pallet can pass smoothly over the blocking plate 3 and the buffer plate 10. When the blocking plate 3 flips to block again, the torsion spring 9, which has twisted, can release its elastic potential energy smoothly, and the buffer plate 10 can continue to move outward from inside the storage slot 5.
[0042] As a further embodiment of the present invention, the limiting component includes two mounting strips 12, both of which are disposed at one end of the blocking plate 3. Two limiting pins 13 are slidably inserted on the mounting strips 12, and the limiting pins 13 are fixedly connected to the blocking plate 3. A first spring 14 is sleeved on each limiting pin 13, and the first spring 14 is fixedly connected between the corresponding mounting strip 12 and one end of the limiting pin 13. An arc-shaped pin 15 is fixedly connected to each mounting strip 12. An arc-shaped groove 16 is opened at one end of the buffer plate 10. The arc-shaped end of the arc-shaped pin 15 passes through the blocking plate 3 and is positioned opposite to the corresponding arc-shaped groove 16.
[0043] One end of the base 1 is fixedly connected to a guide strip 17. The end of the guide strip 17 near the baffle plate 3 is provided with a guide slope. Each mounting strip 12 is fixedly connected to a fixing strip 18. Each fixing strip 18 is fixedly connected to a pressing pin 19. One end of the pressing pin 19 is in contact with the corresponding guide strip 17.
[0044] When the blocking plate 3 is inside the placement groove 2, the guide strip 17 contacts and blocks one end of the pressing pin 19, preventing the arc end of the arc pin 15 from entering the corresponding arc groove 16, thereby releasing the limiting effect of the arc pin 15 on the buffer plate 10. When the blocking plate 3 is vertically flipped along the rotation connection between the rotating shaft 4 and the base 1, the pressing pin 19 moves along the surface of the corresponding guide strip 17, preventing the arc end of the arc pin 15 from moving. During this process, the storage groove 5 moves away from the placement groove 2, causing the buffer plate 10 to move outward under the action of the torsion spring 9. When one end of the pressing pin 19 finally separates from the surface of the guide strip 17 and, through the elastic action of the first spring 14, presses the arc pin 15 into the storage groove 5, the buffer plate 10 has moved a certain distance outward from the inside of the storage groove 5, preventing the arc pin 15 from entering the arc groove 16 and limiting the buffer plate 10, thereby ensuring that the buffer plate 10 unfolds normally.
[0045] During transport, the pallet is compressed and the buffer plate 10 re-enters the receiving groove 5. As the buffer plate 10 is impacted and elastically repositions, one end of the buffer plate 10 presses against the arc-shaped end of the arc-shaped pin 15. This causes the arc-shaped pin 15 to move the mounting strip 12 along the sliding joint of the limiting pin 13, thus compressing the first spring 14. When the buffer plate 10 is fully inside the receiving groove 5, the arc-shaped end of the arc-shaped pin 15 is aligned with the corresponding receiving groove 5. The elastic extension of the first spring 14 then compresses the arc-shaped pin 15 into the arc-shaped groove 16, allowing the buffer plate 10 to elastically cushion the pallet and allow it to enter the receiving groove. After entering the storage slot 5, the buffer plate 10 is limited to prevent it from exerting a reaction force on the pallet under the action of the torsion spring 9. This prevents the pallet and goods from moving in opposite directions during the blocking process, ensuring the stability of the parking position. When the blocking plate 3 flips back into the placement slot 2, it continues to guide the squeezing pin 19 through the guide slope at one end of the guide bar 17, causing the squeezing pin 19 to move to the surface of the guide bar 17. This allows the arc-shaped pin 15 to disengage from the arc-shaped groove 16 and release the limitation on the buffer plate 10, ensuring that the buffer plate 10 can move smoothly outward from the storage slot 5 when the blocking plate 3 flips back to block the next time.
[0046] As a further embodiment of the present invention, a spherical groove 20 is provided at one end of each extrusion pin 19, and a contact ball 21 is rolled inside the spherical groove 20;
[0047] During the process of contacting and disengaging from the guide bar 17, the extrusion pin 19 makes contact with the guide bar 17 through the contact ball 21 instead of the extrusion pin 19. During the movement, the contact ball 21 rolls on the surface of the guide bar 17 through the limiting of the ball groove 20, thereby reducing the contact wear between the guide bar 17 and the surface of the extrusion pin 19, ensuring the smoothness of movement during the guiding process, and preventing the slippage caused by excessive friction.
[0048] As a further embodiment of the present invention, such as Figure 9 and Figure 10 The two movable rings 8 shown are provided with fan-shaped grooves 22 at their far ends. Two fan-shaped blocks 23 are fixedly connected to the surface of the connecting shaft 6. The fan-shaped blocks 23 are located inside the corresponding fan-shaped grooves 22 and are in contact with one side of the fan-shaped grooves 22.
[0049] When the torsion spring 9 releases its elastic potential energy and drives the movable ring 8 to rotate, the buffer plate 10 moves with the movable ring 8 and moves out of the storage groove 5. During the rotation, the movable ring 8 moves relative to the sector-shaped stop 23, thereby causing the sector-shaped stop 23 to move from one side to the other side inside the sector-shaped groove 22. The movement of the movable ring 8 and the buffer plate 10 is stopped by the blocking effect of the sector-shaped stop 23, and the range of movement of the buffer plate 10 out of the storage groove 5 is limited, ensuring that the two buffer plates 10 move out of the storage groove 5 within the same range.
[0050] As a further embodiment of the present invention, the two buffer plates 10 are both circular arc-shaped edge contours on the sides that are far apart from each other.
[0051] The contact position between the buffer plate 10 and the pallet is on the side where the two buffer plates 10 are far apart from each other. By rounding the contact position of the buffer plate 10, the contact position between the buffer plate 10 and the pallet is always rounded when the buffer plate 10 moves to make way, reducing the impact damage to the pallet surface.
[0052] As a further embodiment of the present invention, the driving component includes a strip groove 24, which is formed at the bottom of the base 1 and is connected to the placement groove 2. A slider 25 is slidably connected inside the strip groove 24. A movable strip 26 is provided between the slider 25 and the baffle plate 3. The two ends of the movable strip 26 are respectively hinged to the bottom of the baffle plate 3 and one side of the slider 25. A cylinder 27 is fixedly installed at the bottom of the base 1. A movable connecting component is provided between the piston shaft of the cylinder 27 and the slider 25.
[0053] The piston shaft of cylinder 27 is connected to slider 25 through a movable connecting assembly. When the piston shaft of cylinder 27 moves, it drives slider 25 to move inside the strip groove 24. The two ends of movable bar 26 hinge the blocking plate 3 and slider 25, so that the blocking plate 3 flips vertically as slider 25 moves. The two ends of movable bar 26 rotate along the hinge, thereby realizing the flipping of blocking plate 3.
[0054] As a further embodiment of the present invention, a transverse baffle 28 is fixedly connected to one end of the base 1, the transverse baffle 28 is located at one end of the placement groove 2, and two longitudinal baffles 29 are provided below the base 1. The longitudinal baffles 29 are slidably inserted into the base 1, and the top ends of the longitudinal baffles 29 are flush with the bottom surface of the placement groove 2. A fixing block 30 is fixedly connected to the bottom end of each longitudinal baffle 29, and a circular pin 31 is fixedly inserted into each fixing block 30. Two guide plates 32 are provided between the two fixing blocks 30. Figure 3As shown, each guide plate 32 is provided with a guide groove 33, which includes a horizontal section 3301 and an inclined section 3302. Circular pins 31 are located inside the corresponding horizontal section 3301. Both guide plates 32 are connected to the movable connecting assembly.
[0055] After the cylinder 27 drives the slider 25 to move and causes the blocking plate 3 to flip, the impact force generated when the blocking plate 3 and the buffer plate 10 block the tray acts on the blocking plate 3 and the buffer plate 10. Meanwhile, the piston shaft of the cylinder 27 is simultaneously impacted during the load application on the blocking plate 3. Repeated impacts can easily cause the piston shaft of the cylinder 27 to loosen, thus affecting the verticality of the blocking plate 3 after flipping and reducing the service life of the cylinder 27. After connecting the piston shaft of the cylinder 27 to the slider 25 through the movable connecting assembly, the piston shaft of the cylinder 27 drives the slider 25 to move, causing the blocking plate 3 to flip. Simultaneously, it drives the two guide plates 32 to move synchronously. As the guide plates 32 move, the circular pin 31 moves relative to each other within the horizontal section 3301. When the obstruction... After the baffle 3 is in a vertical position, the horizontal baffle 28 blocks the side of the baffle 3 that contacts the tray. At this time, the circular pin 31 is located at the junction of the horizontal section 3301 and the inclined section 3302. The slider 25 stops moving, while the piston shaft of the cylinder 27 continues to drive the guide plate 32 to move, so that the circular pin 31 moves relative to the inside of the inclined section 3302. Through the fixed connection between the longitudinal baffle 29 and the fixed block 30, the longitudinal baffle 29 moves upward along the through-hole and blocks the other side of the baffle 3. When the baffle 3 is impacted during the blocking process, the longitudinal baffle 29 blocks and bears most of the impact force, reducing the direct impact on the piston shaft of the cylinder 27, ensuring the verticality of the baffle 3 after it is flipped, and extending the service life of the cylinder 27.
[0056] As a further embodiment of the present invention, the movable connection assembly includes a rectangular frame 34, which is fixedly connected to the bottom of the slider 25. A fixed plate 35 is slidably connected inside the rectangular frame 34. The piston shaft of the cylinder 27 is fixedly connected to the fixed plate 35. A light rod 36 is fixedly connected inside the rectangular frame 34. The light rod 36 is slidably inserted into the fixed plate 35. A second spring 37 is sleeved on the light rod 36. The second spring 37 is fixedly connected between the fixed plate 35 and the inner wall of the rectangular frame 34. Two guide plates 32 are respectively fixedly connected to both sides of the fixed plate 35.
[0057] The piston shaft of cylinder 27 moves, causing the fixed plate 35 to move, and the rectangular frame 34 and slider 25 to move through the elastic force of the second spring 37. The two guide plates 32 move synchronously with the fixed plate 35. When the blocking plate 3 is in a vertical state and is blocked by the horizontal stop bar 28, the slider 25 cannot continue to move along the inside of the strip groove 24. At this time, the piston shaft of cylinder 27 continues to move and causes the fixed plate 35 to move in the rectangular frame 34, causing the second spring 37 to be squeezed and produce compression deformation, thereby causing the guide plate 32 to continue to move, so that the circular pin 31 is guided from the inside of the horizontal section 3301 to the inside of the inclined section 3302, and the longitudinal stop bar 29 moves upward to block the other side of the blocking plate 3.
[0058] As a further embodiment of the present invention, the force exerted by the cylinder 27 when it drives the blocking plate 3 to flip is less than the yield point of the second spring 37;
[0059] When the force exerted by the cylinder 27 to flip the blocking plate 3 is less than the yield point of the spring, the second spring 37 does not undergo compression deformation when the blocking plate 3 flips, thus ensuring that the flipping of the blocking plate 3 and the segmented movement of the longitudinal baffle 29 do not affect each other.
[0060] As a further embodiment of the present invention, a mounting bracket 38 is fixedly connected to the base 1, and a plurality of mounting holes 39 are provided on the mounting bracket 38;
[0061] The mounting bracket 38 is connected to the roller conveyor line by limiting the mounting hole 39 with bolts, thereby fixing the roller conveyor line and the base 1.
[0062] Working principle of this invention:
[0063] The base 1 is installed on the roller conveyor line and located between two adjacent rollers. When the pallet containing the goods is conveyed along the surface of the roller conveyor line, the drive assembly drives the baffle 3 to rotate 90 degrees and stand vertically. During the rotation of the baffle 3, the receiving groove 5 moves away from the placement groove 2, so that the buffer plate 10 and the squeezing rod 11 rotate synchronously with the baffle 3. The bottom surface of the placement groove 2 gradually releases the contact squeezing action on the squeezing rod 11. At the same time, the torsion spring 9, which is in a torsional state, begins to release elastic potential energy and drives the movable ring 8 to rotate along the rotation connection of the connecting shaft 6. The movable ring 8 drives the corresponding buffer plate 10 and squeezing rod 11 to rotate synchronously, so that both buffer plates 10 move outward along one side of the receiving groove 5, and the two squeezing rods 11 move outward along the other side of the receiving groove 5.
[0064] As the pallet moves along the roller conveyor line and approaches the buffer plate 10, the impact force generated by the contact causes the two buffer plates 10 to move back into the receiving groove 5. At the same time, the movable ring 8 rotates in the opposite direction along the rotating connection of the connecting shaft 6, and drives the torsion spring 9 to twist. During the twisting process, the torsion spring 9 accumulates elastic potential energy. Thus, when the blocking plate 3 flips vertically and blocks the pallet, the pallet is the first to contact the buffer plate 10. The movement of the buffer plate 10 and the torsion action of the torsion spring 9 buffer the impact generated by the blocking, thereby reducing the impact force on the pallet during the blocking process, preventing the pallet from shifting between the pallet and the goods, reducing the deformation damage to the pallet caused by the impact, and improving the accuracy of the pallet and goods docking position.
[0065] When the pallet compression buffer plate 10 is fully inserted into the storage slot 5, the buffer plate 10 is flush with one side of the blocking plate 3. At this time, the buffer plate 10 is limited inside the storage slot 5 by the action of the limiting component. The blocking plate 3 continues to block the pallet, ensuring that after the buffer plate 10 provides elastic cushioning to the pallet, the torsion spring 9, which has twisted, cannot release its elastic potential energy and therefore cannot drive the buffer plate 10 to continue moving out of the storage slot 5. This ensures that the pallet will not be pushed in the opposite direction by the blocking plate 3 during the blocking process, ensuring the stability of the pallet and the goods during the blocking process. When the drive component drives the blocking plate 3 to flip in the opposite direction and return to the storage slot 5, the limiting component releases its limiting effect on the buffer plate 10. At this time, the bottom of the placement slot 2 contacts the compression rod 11 to prevent the buffer plate 10 from moving out of the storage slot 5, ensuring that the pallet can pass smoothly over the blocking plate 3 and the buffer plate 10. When the blocking plate 3 flips to block again, the torsion spring 9, which has twisted, can release its elastic potential energy smoothly, and the buffer plate 10 can continue to move outward from inside the storage slot 5.
[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by the appended claims and their equivalents is defined.
Claims
1. A pneumatic blocking mechanism for lateral installation on a roller conveyor line, comprising a base (1), characterized in that, The base (1) has a placement groove (2) on its top. A baffle plate (3) is provided inside the placement groove (2). A rotating shaft (4) is fixedly connected to one end of the baffle plate (3). The rotating shaft (4) is rotatably connected to the base (1). A storage groove (5) is provided on the baffle plate (3). A connecting shaft (6) is fixedly connected to the center inside the storage groove (5). A fixing ring (7) is fixedly connected to the center of the connecting shaft (6). Movable rings (8) are rotatably connected to both ends of the connecting shaft (6). A torsion spring (9) is fixedly installed between the fixed ring (7) and the two movable rings (8). A buffer plate (10) and a pressing rod (11) are fixedly connected to the surface of the movable ring (8) along the circumferential direction. The buffer plate (10) and the pressing rod (11) are flush with the two sides of the baffle plate (3). The pressing rod (11) contacts and presses the bottom surface of the placement groove (2). A drive assembly is provided on the base (1) to drive the blocking plate (3) to rotate 90 degrees. A limit assembly is provided on the buffer plate (10) to limit the buffer plate (10) when the blocking plate (3) is in the rotated state.
2. The pneumatic blocking mechanism for a roller conveyor line installed laterally according to claim 1, characterized in that, The limiting component includes two mounting strips (12), both mounting strips (12) are set at one end of the blocking plate (3), and two limiting pins (13) are slidably inserted on the mounting strips (12). The limiting pins (13) are fixedly connected to the blocking plate (3). A first spring (14) is sleeved on each limiting pin (13). The first spring (14) is fixedly connected between the corresponding mounting strip (12) and one end of the limiting pin (13). An arc-shaped pin (15) is fixedly connected on each mounting strip (12). An arc-shaped groove (16) is opened at one end of the buffer plate (10). The arc-shaped end of the arc-shaped pin (15) passes through the blocking plate (3) and is set opposite to the corresponding arc-shaped groove (16). One end of the base (1) is fixedly connected to a guide strip (17). The guide strip (17) has a guide slope at the end near the baffle plate (3). The mounting strip (12) is fixedly connected to a fixing strip (18). The fixing strip (18) is fixedly connected to a pressing pin (19). One end of the pressing pin (19) is in contact with the corresponding guide strip (17).
3. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 2, characterized in that, One end of each extrusion pin (19) is provided with a spherical groove (20), and the inside of the spherical groove (20) is connected with a contact ball (21).
4. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 1, characterized in that, Two movable rings (8) are provided with fan-shaped grooves (22) at their far ends. Two fan-shaped blocks (23) are fixedly connected to the surface of the connecting shaft (6). The fan-shaped blocks (23) are located inside the corresponding fan-shaped grooves (22) and are in contact with one side of the fan-shaped grooves (22).
5. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 1, characterized in that, Both buffer plates (10) have a circular arc edge profile on the side that is far apart from each other.
6. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 1, characterized in that, The drive assembly includes a strip groove (24), which is located at the bottom of the base (1). The strip groove (24) is connected to the placement groove (2). A slider (25) is slidably connected inside the strip groove (24). A movable strip (26) is provided between the slider (25) and the baffle plate (3). The two ends of the movable strip (26) are respectively hinged to the bottom of the baffle plate (3) and one side of the slider (25). A cylinder (27) is fixedly installed at the bottom of the base (1). A movable connection assembly is provided between the piston shaft of the cylinder (27) and the slider (25).
7. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 6, characterized in that, A transverse baffle (28) is fixedly connected to one end of the base (1). The transverse baffle (28) is located at one end of the placement groove (2). Two longitudinal baffles (29) are provided below the base (1). The longitudinal baffles (29) are slidably inserted on the base (1) and the top of the longitudinal baffles (29) is flush with the bottom surface of the placement groove (2). The bottom of the longitudinal baffles (29) is fixedly connected to a fixing block (30). A circular pin (31) is fixedly inserted on the fixing block (30). Two guide plates (32) are provided between the two fixing blocks (30). A guide groove (33) is opened on the guide plate (32). The guide groove (33) includes a horizontal section (3301) and an inclined section (3302). The circular pin (31) is located inside the corresponding horizontal section (3301). The two guide plates (32) are connected to the movable connection assembly.
8. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 7, characterized in that, The active connection assembly includes a rectangular frame (34), which is fixedly connected to the bottom of the slider (25). A fixed plate (35) is slidably connected inside the rectangular frame (34). The piston shaft of the cylinder (27) is fixedly connected to the fixed plate (35). A light rod (36) is fixedly connected inside the rectangular frame (34). The light rod (36) is slidably inserted into the fixed plate (35). A second spring (37) is sleeved on the light rod (36). The second spring (37) is fixedly connected between the fixed plate (35) and the inner wall of the rectangular frame (34). Two guide plates (32) are fixedly connected to both sides of the fixed plate (35).
9. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 8, characterized in that, The force exerted by the cylinder (27) when it drives the blocking plate (3) to flip is less than the yield point of the second spring (37).
10. A pneumatic blocking mechanism for lateral installation on a roller conveyor line according to claim 1, characterized in that, A mounting bracket (38) is fixedly connected to the base (1), and multiple mounting holes (39) are provided on the mounting bracket (38).