A roller conveyor with automatic cooling function

Abstract

The application discloses a roller conveyor with an automatic cooling function and belongs to the technical field of roller conveyors, which comprises a rack, a plurality of equidistantly arranged conveying rollers rotatably arranged side by side on the rack, and a cooling mechanism arranged below each conveying roller, wherein the plurality of cooling mechanisms are all arranged on the rack and used for air cooling the surface of the corresponding conveying roller; each group of the cooling mechanisms comprises a mounting plate fixedly connected to one side of the rack, and an air supply assembly arranged on the mounting plate and used in cooperation with the conveying roller; the application realizes automatic air supply through the rotation of the conveying roller, and the air is sprayed at high speed after pressure accumulation to cool the roller, without external power; the clamping positioning prolongs the air blowing time to ensure omnidirectional cooling, and the automatic unlocking and resetting realize circulation control, which not only effectively slows down the high-temperature aging of the glue layer and prolongs the service life of the roller, but also improves the conveying stability and ensures the reliable operation of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of roller conveyor technology, and in particular relates to a roller conveyor with automatic cooling function. Background Technology

[0002] Roller conveyors are widely used conveying equipment in industrial production, using several parallel rotating rollers to transport materials. In some applications, roller conveyors need to transport materials with high temperatures (such as hot-pressed workpieces, castings, and products baked at high temperatures), or the equipment itself operates in a high-temperature environment. The heat from the hot material is conducted to the surface of the conveyor rollers through contact, causing the roller surface temperature to rise. Furthermore, frictional heat generated during material transport also contributes to the increased roller temperature.

[0003] The outer surface of conveyor rollers is typically covered with a rubber or polyurethane layer to increase the coefficient of friction with materials, prevent slippage during transport, and provide cushioning protection. However, rubber or polyurethane materials are quite sensitive to temperature. Prolonged operation of conveyor rollers at high temperatures significantly impacts the anti-slip rubber layer, primarily by accelerating aging, reducing strength, and increasing wear. Once the rubber layer ages and wears down, it severely affects the overall conveying efficiency and stability (leading to slippage), and also significantly reduces the equipment's lifespan.

[0004] In the existing technology, the cooling methods for drums mainly include the following: First, water cooling is used, which achieves cooling by setting up cooling water channels inside the drum or external spraying. However, the water cooling system has a complex structure, is prone to leakage, and is not suitable for materials that are sensitive to humidity. Second, natural air cooling is used, which relies on the convection of heat between the surface of the drum and the air when the drum rotates. However, the heat dissipation efficiency is low and it is difficult to meet the cooling requirements of high-temperature working conditions. Third, a separate fan is used to blow air onto the surface of the drum. This requires an additional power source and control device, resulting in high equipment cost and high energy consumption.

[0005] Therefore, it is necessary to propose a roller conveyor with automatic cooling function to solve the problems mentioned above. Summary of the Invention

[0006] In view of this, in order to solve the problems of excessively high roller surface temperature leading to accelerated aging and increased wear of the anti-slip rubber layer and decreased conveying stability when existing roller conveyors are used to convey high-temperature materials or in high-temperature environments, and the high cost and energy consumption caused by the need for an additional power source in existing air-cooling methods, the present invention provides a roller conveyor with automatic cooling function.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a roller conveyor with automatic cooling function, comprising a frame, on which a plurality of conveying rollers are equidistantly arranged and rotated side by side, characterized in that it further comprises a cooling mechanism disposed below each conveying roller, the plurality of cooling mechanisms being mounted on the frame for air cooling of the surface of the corresponding conveying roller;

[0008] Each cooling mechanism includes:

[0009] Mounting plate, fixedly connected to one side of the frame, the mounting plate is provided with an air supply assembly for use with the conveying roller;

[0010] During the conveying and rotating process of the conveying roller, the air supply component can automatically control the switching between air inlet and outlet.

[0011] An air supply duct is fixedly connected to one side of the mounting plate and connected to the air supply assembly through a pipe. Multiple air blowing pipes are fixedly connected side by side through the top of the air supply duct.

[0012] The air supplied by the air supply component enters the air supply duct directly, and then blows upward from the blower pipe, acting on the surface of the conveyor roller to complete the air cooling.

[0013] Furthermore, the air supply assembly includes:

[0014] The piston cylinder is fixedly connected to one inner side of the mounting plate.

[0015] The first piston is sealed and slidably connected inside the piston cylinder;

[0016] The first piston rod is fixedly connected to the top of the first piston, and its top end passes through the top of the piston cylinder and extends upward through the top of the mounting plate.

[0017] The first spring is sleeved on the outer wall of the first piston rod, and its two ends are fixedly connected to the top outer wall of the piston cylinder and one side of the first piston rod, respectively.

[0018] The top end of the first piston rod is engaged with the conveying drum through a transmission structure. During the conveying and rotating process of the conveying drum, the first piston rod can reciprocate up and down in conjunction with the reset of the first spring.

[0019] It also includes a one-way air inlet pipe and a one-way air outlet pipe, one end of which is fixedly connected through the bottom of the piston cylinder, and the other end of the one-way air outlet pipe is fixedly connected through the bottom of the air supply pipe near the mounting plate.

[0020] Furthermore, a first annular groove is provided on one side of the outer wall of the conveying roller, and at least one first arc-shaped protrusion is integrally provided on the inner wall of the first annular groove;

[0021] The top end of the first piston rod extends upward into the first annular groove and intermittently abuts against the arc-shaped surface of the first arc-shaped protrusion.

[0022] Furthermore, a second piston is slidably connected to the inside of the air supply duct on the side away from the one-way air outlet duct, and a baffle plate is fixedly connected to the top of the side of the second piston near the one-way air outlet duct.

[0023] The top of the baffle plate is sealed and slidably fitted to the top inner wall of the air supply duct, and the top of the baffle plate is provided with a plurality of exhaust holes that are intermittently connected to the bottom end of the adjacent air supply duct.

[0024] When the air pressure in the air supply duct is lower than the set threshold, the multiple exhaust holes are staggered with the corresponding blower pipes, and the air is stored in the air supply duct. When the stored air reaches a certain pressure, that is, when the air pressure in the air supply duct is higher than the set threshold, the multiple exhaust holes gradually move to connect with the bottom of the corresponding blower pipe, thus completing the high-pressure discharge of the air.

[0025] Furthermore, the cooling mechanism also includes:

[0026] The control box is fixedly connected to the side of the frame away from the mounting plate, and the end of the air supply duct away from the mounting plate is fixedly connected to the outer wall of one side of the control box.

[0027] The second piston is fixedly connected to a second piston rod on the side away from the wind deflector. The other end of the second piston rod passes through one end of the air supply pipe and one side of the control box in sequence, and extends into the interior of the control box and is fixedly connected to a sliding plate.

[0028] The control box has two guide rods fixedly connected horizontally and symmetrically at the bottom. The sliding plate is slidably sleeved on the two guide rods. The outer walls of the two guide rods are each fitted with a fourth spring. The two ends of the fourth spring are fixedly connected to one side of the sliding plate and one side of the inner wall of the control box, respectively.

[0029] Furthermore, the control box has a through hole on the side away from the air supply duct, and a limit plate is vertically slidably connected inside the through hole. A support plate is fixedly connected to the top of the limit plate on the side near the sliding plate.

[0030] Two second fixing blocks are symmetrically fixedly connected to the upper inner wall of the control box near the through hole. The top of each of the two second fixing blocks is slidably connected to a second sliding rod. The bottom of each of the two second sliding rods is fixedly connected to the top of the support plate. A fifth spring is sleeved on the outer wall of each of the two second sliding rods. The two ends of the fifth spring are fixedly connected to the top of the support plate and the bottom of the second fixing block, respectively.

[0031] A first fixing block is fixedly connected to the side of the sliding plate away from the second piston rod. Two support rods are symmetrically fixedly connected to the side of the first fixing block away from the sliding plate. The other ends of the two support rods are attached to the bottom inner wall of the through hole and protrude outward.

[0032] The top of each of the two support rods is integrally formed with a triangular locking block that intermittently engages with the limiting plate.

[0033] Furthermore, a pressure rod is slidably connected through the top of the control box, and a second spring is sleeved on the outer wall inside the control box. The two ends of the second spring are fixedly connected to the inner wall of the top of the control box and the outer wall of the pressure rod, respectively.

[0034] A second annular groove is provided on the other side of the outer wall of the conveying roller, and at least one second arc-shaped protrusion is integrally provided on the inner wall of the second annular groove;

[0035] The top end of the pressure rod extends upward into the second annular groove and intermittently abuts against the arc-shaped surface of the second arc-shaped protrusion.

[0036] Furthermore, two first sliding rods are symmetrically slidably passed through the top of the first fixing block, and the top ends of the two first sliding rods are fixedly connected to the same pressure block. A third spring is sleeved on the outer wall of each of the two first sliding rods, and the two ends of the third spring are fixedly connected to the top of the first fixing block and the bottom of the pressure block, respectively.

[0037] The top of the pressure block is provided with a pressing slope that is inclined downward along the direction of the limiting plate, and the pressing slope intermittently abuts against the bottom end of the pressure rod.

[0038] Furthermore, each of the two support rods has an integrally formed mounting block at its top, and the two mounting blocks are rotatably connected through the same rotating shaft. The outer wall of the rotating shaft is fitted with a gear through a one-way bearing, and the bottom of the pressure block is fixedly connected with a rack that meshes with the gear.

[0039] Both ends of the rotating shaft are fixedly connected to a lever that intermittently abuts against the bottom of the support plate.

[0040] Furthermore, the diameter of the first piston rod is the same as the width of the first annular groove;

[0041] The diameter of the pressure rod is the same as the width of the second annular groove.

[0042] The embodiments of the present invention have the following beneficial effects:

[0043] 1. When the conveyor roller rotates, the first arc-shaped protrusion intermittently pushes the first piston rod to reciprocate, driving the first piston to slide back and forth in the piston cylinder. Air is drawn in through the one-way air inlet pipe and delivered through the one-way air outlet pipe, thus achieving automatic air delivery without the need for an external power source, relying entirely on the rotation of the conveyor roller itself.

[0044] 2. By cooperating with the baffle plate inside the air supply duct, the air is accumulated and pressurized in the duct to a set threshold before being ejected at high speed from the blower pipe, which improves the blowing speed and cooling effect. This not only cools the surface of the conveyor roller, but also removes dust and impurities from the roller surface, thereby effectively slowing down the high-temperature aging of the anti-slip rubber layer on the roller surface and significantly extending the service life of the roller and the conveying stability.

[0045] 3. By engaging and positioning the triangular block with the limit plate, the continuous blowing time of high-pressure air is extended, ensuring that the circumferential surface of the conveyor roller receives uniform cooling from all directions. At the same time, through the linkage of the pressure rod, the pressing inclined surface, the rack and pinion, and the one-way bearing, the air is automatically unlocked and reset after the air cooling is completed, realizing fully automatic cycle control of pressure accumulating injection and automatic reset.

[0046] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art based on the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0047] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0048] Figure 1 This is a first-view schematic diagram of the overall structure of a roller conveyor with automatic cooling function according to the present invention;

[0049] Figure 2 This is a second-view schematic diagram of the overall structure of a roller conveyor with automatic cooling function according to the present invention;

[0050] Figure 3 This is a schematic diagram of the connection structure between the conveyor roller, the air supply assembly, the air supply duct, and the control box of the present invention.

[0051] Figure 4 This is a schematic diagram of a partial connection structure between the conveying roller and the air supply assembly of the present invention;

[0052] Figure 5 This is a cross-sectional view of the overall structure of the air supply assembly of the present invention;

[0053] Figure 6 This is a cross-sectional view of the overall structure of the air supply duct of the present invention;

[0054] Figure 7 This is a schematic diagram of a partial connection between the conveyor roller and the control box of the present invention;

[0055] Figure 8 For the present invention Figure 7 Overall structural sectional view;

[0056] Figure 9 This is a partial structural diagram of the internal structure of the control box of the present invention;

[0057] Figure 10 This is a schematic diagram of the connection structure of the limiting plate of the present invention.

[0058] In the diagram: 1. Frame; 2. Mounting plate; 3. Air supply duct; 4. Control box; 41. Through hole; 5. Piston cylinder; 6. One-way air inlet pipe; 7. First piston; 8. First piston rod; 9. First spring; 10. Conveyor roller; 101. First annular groove; 1011. First arc-shaped protrusion; 102. Second annular groove; 1021. Second arc-shaped protrusion; 11. One-way air outlet pipe; 12. Support block; 13. Air blower pipe; 14. Second piston; 15. Second piston rod; 16. Baffle plate; 161. Exhaust hole ; 17. Pressure rod; 18. Sliding plate; 19. Limiting plate; 20. Second spring; 21. First fixing block; 22. Support rod; 23. First sliding rod; 24. Pressure block; 241. Pressing inclined surface; 25. Third spring; 26. Mounting block; 27. Rotating shaft; 28. Gear; 29. ​​Guide rod; 30. Fourth spring; 31. One-way bearing; 32. Rack; 33. Triangular locking block; 34. Support plate; 341. Clearance notch; 35. Second fixing block; 36. Second sliding rod; 37. Fifth spring; 38. Actuating rod. Detailed Implementation

[0059] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0060] Example 1: Please refer to Figures 1-6This embodiment provides a roller conveyor with automatic cooling function. This conveyor can be used in high-temperature environments or for conveying high-temperature materials, and can automatically cool the surface of the conveying rollers during the conveying process. The conveyor includes a frame 1, conveying rollers 10, and a cooling mechanism located below each conveying roller 10. Several equidistantly spaced conveying rollers 10 are mounted side-by-side and rotatably on the frame 1. The outer wall of each conveying roller 10 is typically covered with an anti-slip rubber layer to increase friction with the material, thereby ensuring conveying stability.

[0061] Several cooling mechanisms are mounted on the frame 1 to provide air cooling for the surfaces of the corresponding conveyor rollers 10. Specifically, each cooling mechanism includes a mounting plate 2, which is fixedly connected to an inner side of the frame 1. The mounting plate 2 is equipped with an air supply component that works in conjunction with the conveyor rollers 10. During the conveying rotation of the conveyor rollers 10, the air supply component automatically controls the switching between air inflow and outflow, eliminating the need for an external power source.

[0062] The cooling mechanism also includes an air supply duct 3 fixedly connected to an outer side of the mounting plate 2. The air supply duct 3 is connected to the air supply assembly via a pipe. Multiple air blowing pipes 13 are fixedly connected side by side through the top of the air supply duct 3. The air delivered by the air supply assembly directly enters the air supply duct 3, and then is blown upward from the air blowing pipes 13, acting on the lower surface of the conveyor roller 10 to complete the air cooling.

[0063] In this embodiment, the air supply assembly includes a piston cylinder 5, which is fixedly connected to an inner side of the mounting plate 2 via a support block 12 in a state perpendicular to the horizontal axis of the conveying roller 10, forming a sealed piston chamber inside. A first piston 7 is slidably connected inside the piston cylinder 5, dividing the piston chamber into an upper chamber and a lower chamber. A first piston rod 8 is fixedly connected to the top of the first piston 7, with its top end penetrating the top of the piston cylinder 5 and extending upward through the top of the mounting plate 2. A first spring 9 is sleeved on the outer wall of the first piston rod 8, with its two ends fixedly connected to the top outer wall of the piston cylinder 5 and one side of the first piston rod 8, respectively, providing an upward restoring force for the first piston rod 8. In addition, the top end of the first piston rod 8 cooperates with the conveying roller 10 through a transmission structure. During the conveying rotation of the conveying roller 10, the first piston rod 8 can reciprocate up and down in conjunction with the restoring action of the first spring 9.

[0064] A one-way air inlet pipe 6 and a one-way air outlet pipe 11 are fixedly connected to the bottom of the piston cylinder 5. The other end of the one-way air outlet pipe 11 is fixedly connected to the bottom of the air supply pipe 3 near the mounting plate 2. The one-way air inlet pipe 6 is used to draw in air from the outside, and can also be connected to an additional cold air source. The one-way air outlet pipe 11 is used to send the air drawn into the piston cylinder 5 into the air supply pipe 3. When the first piston rod 8 moves up and down, it can drive the first piston 7 to slide up and down inside the piston cylinder 5. When the first piston 7 moves upward, the volume of the bottom chamber of the piston cylinder 5 increases, generating negative pressure, which can draw outside air into the piston cylinder 5 through the one-way air inlet pipe 6. When the first piston 7 moves downward, the volume of the bottom chamber of the piston cylinder 5 decreases, increasing pressure, which can send the air in the piston cylinder 5 into the air supply pipe 3 through the one-way air outlet pipe 11, and finally blown upward from the blower pipe 13. The blown air directly acts on the lower surface of the conveyor roller 10, thereby achieving a cooling effect on the surface of the conveyor roller 10.

[0065] like Figures 3-5 As shown, a first annular groove 101 is formed on one side of the outer wall of the conveying roller 10, and at least one first arc-shaped protrusion 1011 is integrally formed on the inner wall of the first annular groove 101. The top end of the first piston rod 8 extends upward into the first annular groove 101 and intermittently abuts against the arc-shaped surface of the first arc-shaped protrusion 1011. The diameter of the first piston rod 8 is the same as the width of the first annular groove 101. Through the width adaptation setting, a certain limiting effect can be achieved on the operation of the conveying roller 10, limiting the conveying roller 10 from deviating during long-term operation.

[0066] During operation, as the conveyor roller 10 rotates, the first arc-shaped protrusion 1011 rotates and moves synchronously. When the arc-shaped surface of the first arc-shaped protrusion 1011 contacts the top of the first piston rod 8, due to the gradual change in the arc-shaped surface, it gradually pushes the first piston rod 8 downward and squeezes the first spring 9, thereby driving the first piston 7 downward and forcing the air out of the piston cylinder 5. When the top of the first piston rod 8 disengages from the first arc-shaped protrusion 1011, under the elastic force of the first spring 9, it drives the first piston rod 8 to move upward and reset, thereby driving the first piston 7 upward and drawing in air through the one-way air inlet pipe 6. This achieves the reciprocating up and down movement of the first piston 7, thus completing the back-and-forth switching of air inlet and outlet, and realizing the effect of automatically supplying air into the air supply pipe 3.

[0067] This invention can be used in the field of roller conveyors, and can also be applied to other fields.

[0068] Example 2: This example is a further improvement on the previous example: as follows Figures 6-8As shown, to ensure sufficient impact force and cooling effect of the blowing air, this embodiment incorporates a pressure storage structure within the air supply duct 3. This structure stores compressed air and releases it in a concentrated manner after reaching a certain pressure, achieving high-speed blowing and improving air cooling and dust removal effects. Specifically, a second piston 14 is slidably and sealed to the side of the air supply duct 3 away from the one-way outlet pipe 11. A baffle plate 16 is fixedly connected to the top of the second piston 14 near the one-way outlet pipe 11. The top of the baffle plate 16 is slidably and sealed against the top inner wall of the air supply duct 3. The top of the baffle plate 16 has multiple exhaust holes 161 arranged side by side, intermittently communicating with the bottom end of the adjacent blowing pipe 13.

[0069] When the air in the air supply duct 3 is under low pressure, the second piston 14 does not move, and the exhaust hole 161 on the baffle plate 16 is misaligned and not connected with the adjacent blower pipe 13. Because the baffle plate 16 and the top inner wall of the air supply duct 3 are in a sealed, sliding fit, the air entering the air supply duct 3 from the one-way outlet pipe 11 will not be directly blown out of the blower pipe 13. At this time, due to the sealing effect of the baffle plate 16, the pressure inside the air supply duct 3 gradually increases with continuous air input. When the air pressure inside the air supply duct 3 exceeds a set threshold, the internal pressure gradually pushes the second piston 14 to move away from the one-way outlet pipe 11, simultaneously moving the baffle plate 16. When the exhaust hole 161 moves to correspond to the bottom end of the adjacent blower pipe 13, due to the higher internal pressure, the air inside the air supply duct 3 will be blown out of the blower pipe 13 at high speed through the exhaust hole 161, thereby increasing the blowing speed and improving the cooling and dust removal effects.

[0070] In this embodiment, the cooling mechanism further includes a control box 4, which is fixedly connected to an inner side of the frame 1 away from the mounting plate 2, and the end of the air supply duct 3 away from the mounting plate 2 is fixedly connected to an outer wall of one side of the control box 4. A second piston rod 15 is fixedly connected to the side of the second piston 14 away from the baffle plate 16, and the other end of the second piston rod 15 passes through one end of the air supply duct 3 and one side of the control box 4 in sequence, while extending into the interior of the control box 4 and being fixedly connected to a sliding plate 18.

[0071] Two guide rods 29 are horizontally symmetrically fixedly connected to the lower part of the control box 4, and a sliding plate 18 is slidably sleeved on the two guide rods 29. A fourth spring 30 is sleeved on the outer wall of each guide rod 29, with both ends of the fourth spring 30 fixedly connected to one side of the sliding plate 18 and one side of the inner wall of the control box 4, respectively. When the second piston 14 is pressed and moves, it drives the second piston rod 15 to extend into the control box 4, simultaneously guiding the sliding plate 18 to slide on the two guide rods 29 and compressing the fourth spring 30. When the air pressure in the air supply duct 3 decreases, under the elastic force of the fourth spring 30, the second piston 14 is reset and moved by the sliding plate 18 and the second piston rod 15, thereby moving the baffle plate 16 back to its initial position. The exhaust port 161 and the blower pipe 13 are misaligned again, and pressure is re-accumulated, preparing for the next high-speed blow.

[0072] Example 3: This example is a further improvement on the previous example: as follows Figures 7-10 As shown, a through hole 41 is provided on the side of the control box 4 away from the air supply duct 3. A limit plate 19 is vertically slidably connected inside the through hole 41. A support plate 34 is fixedly connected to the top of the limit plate 19 near the sliding plate 18. Two second fixing blocks 35 are symmetrically fixedly connected to the upper part of the inner wall of the control box 4 near the through hole 41. A second sliding rod 36 slides through the top of each of the two second fixing blocks 35. The bottom ends of the two second sliding rods 36 are fixedly connected to the top of the support plate 34. A fifth spring 37 is sleeved on the outer wall of each of the two second sliding rods 36. The two ends of the fifth spring 37 are fixedly connected to the top of the support plate 34 and the bottom of the second fixing block 35, respectively, providing a downward restoring force for the support plate 34 and the limit plate 19.

[0073] A first fixing block 21 is fixedly connected to the side of the sliding plate 18 away from the second piston rod 15. Two support rods 22 are symmetrically fixedly connected to the side of the first fixing block 21 away from the sliding plate 18. The other ends of the two support rods 22 protrude outward from the bottom inner wall of the through hole 41. The top of each of the two support rods 22 is integrally formed with a triangular locking block 33 that intermittently engages with the limiting plate 19. When the second piston is pressed and moves, it will drive the sliding plate 18 to move and compress the fourth spring 30. At the same time, the first fixing block 21 will drive the two support rods 22 to move. When the support rods 22 move, they can drive the triangular locking blocks 33 to move synchronously. When the inclined surface of the triangular locking block 33 abuts against the bottom of the limiting plate 19, as the support rods 22 continue to move, the limiting plate 19 can be pushed upward. At the same time, the support plate 34 and the corresponding second sliding rod 36 will move upward and compress the fifth spring 37. When the triangular locking block 33 moves to the side of the limiting plate 19 away from the sliding plate 18, that is, the triangular locking block 33 disengages from the upper and lower contact with the limiting plate 19, under the elastic force of the fifth spring 37, the support plate 34 and the second slide rod 36 are driven to reset downwards, and the limiting plate 19 is driven to reset downwards, and the triangular locking block 33 is limited in its reset movement. In other words, the upper and lower contact relationship is switched to the horizontal contact limit, thereby realizing the locking and positioning of the second piston 14.

[0074] This design ensures that as the air pressure inside the air supply duct 3 gradually returns to the same level as the outside air pressure, the second piston 14 will not quickly reset under the elastic force of the fourth spring 30. On the one hand, it can prolong the time for high-pressure air to be blown out, improving the cooling and dust removal effect; on the other hand, it can ensure that as the conveyor roller 10 rotates one or more times, it completes the 360-degree all-round cooling and dust removal work on its circumferential surface.

[0075] like Figure 7 and Figure 8 As shown, a pressure rod 17 is slidably connected through the top of the control box 4. A second spring 20 is sleeved on the outer wall inside the control box 4, with both ends of the second spring 20 fixedly connected to the inner wall of the top of the control box 4 and the outer wall of the pressure rod 17, respectively. A second annular groove 102 is formed on the other side of the outer wall of the conveyor roller 10. At least one second arc-shaped protrusion 1021 is integrally formed on the inner wall of the second annular groove 102. The top end of the pressure rod 17 extends upward into the second annular groove 102 and intermittently abuts against the arc-shaped surface of the second arc-shaped protrusion 1021. The diameter of the pressure rod 17 is the same as the width of the second annular groove 102, which also serves to prevent the conveyor roller 10 from deviating.

[0076] like Figure 8 and Figure 9As shown, two first sliding rods 23 symmetrically slide through the top of the first fixed block 21. The top ends of the two first sliding rods 23 are fixedly connected to the same pressure block 24. A third spring 25 is fitted onto the outer wall of each of the two first sliding rods 23. The two ends of the third spring 25 are fixedly connected to the top of the first fixed block 21 and the bottom of the pressure block 24, respectively. The top of the pressure block 24 has a pressing slope 241 that slopes downwards along the direction of the limiting plate 19. The pressing slope 241 intermittently abuts against the bottom end of the pressure rod 17. When the second piston 14 is pressed and moved, it simultaneously moves the pressure block 24 through the first fixed block 21 and the first sliding rods 23, gradually moving the pressure block 24 directly below the pressure rod 17. After the second piston 14 is limited and engaged by the limiting plate 19 and the triangular locking block 33, as the conveying roller 10 rotates, the second arc-shaped protrusion 1021 abuts against the top end of the pressure rod 17, gradually pushing the pressure rod 17 downwards and stretching the second spring 20. The bottom end of the pressure rod 17 abuts against the pressing inclined surface 241 and simultaneously presses down on the pressure block 24, thereby driving the first sliding rod 23 to move downward and compress the third spring 25. When the pressure rod 17 returns to its original position, the pressure block 24 and the first sliding rod 23 return to their original position synchronously under the elastic force of the third spring 25.

[0077] like Figure 9 As shown, each of the two support rods 22 has an integrally formed mounting block 26 at its top. A single rotating shaft 27 is rotatably connected between the two mounting blocks 26. A gear 28 is fitted onto the outer wall of the rotating shaft 27 via a one-way bearing 31. A rack 32, meshing with the gear 28, is fixedly connected to the bottom of the pressure block 24. A lever 38, intermittently engaging with the bottom of the support plate 34, is fixedly connected to both ends of the rotating shaft 27. When the pressure block 24 is subjected to force and moves downwards, it drives the rack 32 downwards, thus driving the gear 28 to rotate. Because of the one-way bearing 31, whose inner ring is fixedly connected to the outer wall of the rotating shaft 27 and whose outer ring is fixedly connected to the inner ring of the gear 28, the rack 32 can drive the rotating shaft 27 to rotate during its downward movement via the rotation of the gear 28. However, during the upward repositioning movement of the rack 32 with the pressure block 24, although the gear 28 rotates in the opposite direction, it does not drive the rotating shaft 27 to rotate, thus achieving one-way drive. Figure 8 As shown, when the lever 38 rotates counterclockwise for nearly one revolution (the figure shows before the movement; after the movement, the rotation of the lever 38 can touch the bottom side of the support plate 34), one end of it abuts against the bottom edge of the support plate 34 (the pushing height does not need to be too high, as long as it can properly release the limit between the triangular block 33 and the limiting plate 19), and as the lever 38 continues to rotate and move, it pushes the support plate 34 to move upward, thereby causing the limiting plate 19 to move upward and squeeze the fifth spring 37.

[0078] When the limiting plate 19 disengages from its limiting contact with the triangular locking block 33, the second piston 14 is reset via the sliding plate 18 and the second piston rod 15 under the elastic action of the fourth spring 30. Simultaneously, the sliding plate 18 drives the support rod 22, pressure block 24, gear 28, and actuating rod 38 to reset, causing the pressure block 24 to misalign with the pressure rod 17 again. Understandably, when the conveyor roller 10 rotates and drives the pressure rod 17 up and down, it will no longer press against the pressure block 24. Therefore, the rotating shaft 27 will no longer rotate, and the actuating rod 38 will no longer rotate, ensuring consistent engagement time for each rotation. After the actuating rod 38 disengages from the support plate 34, the fifth spring 37 drives the support plate 34 and the limiting plate 19 to reset downwards again, ready for the next cycle.

[0079] In one aspect of this embodiment, a clearance notch 341 corresponding to the position of the gear 28 is provided on one side of the support plate 34. During the movement of the gear 28, one side of it can enter the clearance notch 341 to avoid the situation of collision and jamming, and can also indirectly reduce the volume of the control box 4.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A roller conveyor with automatic cooling function, comprising a frame, wherein a plurality of conveying rollers are equidistantly arranged and rotated side-by-side on the frame, characterized in that, It also includes a cooling mechanism located below each conveyor roller, and several cooling mechanisms are installed on the frame to perform air cooling on the surface of the corresponding conveyor roller; Each cooling mechanism includes: Mounting plate, fixedly connected to one side of the frame, the mounting plate is provided with an air supply assembly for use with the conveying roller; During the conveying and rotating process of the conveying roller, the air supply component can automatically control the switching between air inlet and outlet. An air supply duct is fixedly connected to one side of the mounting plate and connected to the air supply assembly through a pipe. Multiple air blowing pipes are fixedly connected side by side through the top of the air supply duct. The air supplied by the air supply component enters the air supply duct directly, and then blows upward from the blower pipe, acting on the surface of the conveyor roller to complete the air cooling.

2. A roller conveyor with automatic cooling function as described in claim 1, characterized in that, The air supply assembly includes: The piston cylinder is fixedly connected to one inner side of the mounting plate. The first piston is sealed and slidably connected inside the piston cylinder; The first piston rod is fixedly connected to the top of the first piston, and its top end passes through the top of the piston cylinder and extends upward through the top of the mounting plate. The first spring is sleeved on the outer wall of the first piston rod, and its two ends are fixedly connected to the top outer wall of the piston cylinder and one side of the first piston rod, respectively. The top end of the first piston rod is engaged with the conveying drum through a transmission structure. During the conveying and rotating process of the conveying drum, the first piston rod can reciprocate up and down in conjunction with the reset of the first spring. It also includes a one-way air inlet pipe and a one-way air outlet pipe, one end of which is fixedly connected through the bottom of the piston cylinder, and the other end of the one-way air outlet pipe is fixedly connected through the bottom of the air supply pipe near the mounting plate.

3. A roller conveyor with automatic cooling function as described in claim 2, characterized in that, A first annular groove is provided on one side of the outer wall of the conveying roller, and at least one first arc-shaped protrusion is integrally provided on the inner wall of the first annular groove. The top end of the first piston rod extends upward into the first annular groove and intermittently abuts against the arc-shaped surface of the first arc-shaped protrusion.

4. A roller conveyor with automatic cooling function as described in claim 3, characterized in that, The air supply duct is sealed and slidably connected to a second piston on the side away from the one-way air outlet duct, and a baffle plate is fixedly connected to the top of the side of the second piston near the one-way air outlet duct. The top of the baffle plate is sealed and slidably fitted to the top inner wall of the air supply duct, and the top of the baffle plate is provided with a plurality of exhaust holes that are intermittently connected to the bottom end of the adjacent air supply duct. When the air pressure in the air supply duct is lower than the set threshold, the multiple exhaust holes are staggered with the corresponding blower pipes, and the air is stored in the air supply duct. When the stored air reaches a certain pressure, that is, when the air pressure in the air supply duct is higher than the set threshold, the multiple exhaust holes gradually move to connect with the bottom of the corresponding blower pipe, thus completing the high-pressure discharge of the air.

5. A roller conveyor with automatic cooling function as described in claim 4, characterized in that, The cooling mechanism also includes: The control box is fixedly connected to the side of the frame away from the mounting plate, and the end of the air supply duct away from the mounting plate is fixedly connected to the outer wall of one side of the control box. The second piston is fixedly connected to a second piston rod on the side away from the wind deflector. The other end of the second piston rod passes through one end of the air supply pipe and one side of the control box in sequence, and extends into the interior of the control box and is fixedly connected to a sliding plate. The control box has two guide rods fixedly connected horizontally and symmetrically at the bottom. The sliding plate is slidably sleeved on the two guide rods. The outer walls of the two guide rods are each fitted with a fourth spring. The two ends of the fourth spring are fixedly connected to one side of the sliding plate and one side of the inner wall of the control box, respectively.

6. A roller conveyor with automatic cooling function as described in claim 5, characterized in that, The control box has a through hole on the side away from the air supply duct. A limit plate is vertically slidably connected inside the through hole. A support plate is fixedly connected to the top of the limit plate on the side near the sliding plate. Two second fixing blocks are symmetrically fixedly connected to the upper inner wall of the control box near the through hole. The top of each of the two second fixing blocks is slidably connected to a second sliding rod. The bottom of each of the two second sliding rods is fixedly connected to the top of the support plate. A fifth spring is sleeved on the outer wall of each of the two second sliding rods. The two ends of the fifth spring are fixedly connected to the top of the support plate and the bottom of the second fixing block, respectively. A first fixing block is fixedly connected to the side of the sliding plate away from the second piston rod. Two support rods are symmetrically fixedly connected to the side of the first fixing block away from the sliding plate. The other ends of the two support rods are attached to the bottom inner wall of the through hole and protrude outward. The top of each of the two support rods is integrally formed with a triangular locking block that intermittently engages with the limiting plate.

7. A roller conveyor with automatic cooling function as described in claim 6, characterized in that, A pressure rod is slidably connected through the top of the control box. A second spring is sleeved on the outer wall inside the control box. The two ends of the second spring are fixedly connected to the inner wall of the top of the control box and the outer wall of the pressure rod, respectively. A second annular groove is provided on the other side of the outer wall of the conveying roller, and at least one second arc-shaped protrusion is integrally provided on the inner wall of the second annular groove; The top end of the pressure rod extends upward into the second annular groove and intermittently abuts against the arc-shaped surface of the second arc-shaped protrusion.

8. A roller conveyor with automatic cooling function as described in claim 7, characterized in that, The top of the first fixed block has two first sliding rods that slide symmetrically through it. The top ends of the two first sliding rods are fixedly connected to the same pressure block. The outer walls of the two first sliding rods are each fitted with a third spring. The two ends of the third spring are fixedly connected to the top of the first fixed block and the bottom of the pressure block, respectively. The top of the pressure block is provided with a pressing slope that is inclined downward along the direction of the limiting plate, and the pressing slope intermittently abuts against the bottom end of the pressure rod.

9. A roller conveyor with automatic cooling function as described in claim 8, characterized in that, The top of each of the two support rods is integrally formed with a mounting block, and the two mounting blocks are rotatably connected through the same rotating shaft. The outer wall of the rotating shaft is fitted with a gear through a one-way bearing, and the bottom of the pressure block is fixedly connected with a rack that meshes with the gear. Both ends of the rotating shaft are fixedly connected to a lever that intermittently abuts against the bottom of the support plate.

10. A roller conveyor with automatic cooling function as described in claim 9, characterized in that, The diameter of the first piston rod is the same as the width of the first annular groove; The diameter of the pressure rod is the same as the width of the second annular groove.

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