A step-type cooling conveying device and cooling conveying method

Abstract

This invention relates to the field of forging cooling technology, and more particularly to a step-type cooling conveying device and method, comprising a control system, a cooling mechanism, a frame mechanism, and a conveying mechanism. The cooling mechanism includes multiple sets of circulating fan units fixed to the top of the frame mechanism, each set including a centrifugal fan, an axial fan, and a blower. The frame mechanism includes a frame, an outer sheet metal cover, an inner sheet metal cover, and a sheet metal base plate. The conveying mechanism includes a translational conveying frame, a lifting conveying frame, a motor and a hydraulic cylinder fixed to one end of the frame, and multiple reducers symmetrically and evenly arranged on both sides of the lifting conveying frame to drive the lifting conveying frame to perform a combined translational and circumferential motion. This invention achieves zero-contact step-type movement and rolling flipping of the workpiece, avoiding accumulation and ensuring uniform cooling; the composite cooling system improves cooling efficiency; it can automatically collect impurities such as oxide scale, solving the problem of waste residue cleaning; and it facilitates segmented maintenance, reducing downtime for maintenance.

Description

Technical Field

[0001] This invention relates to the field of cooling technology for forging parts, and more particularly to a step-type cooling conveying device and cooling conveying method. Background Technology

[0002] Currently, traditional forging parts cooling and conveying devices have the following drawbacks:

[0003] 1. Single conveying method: Mostly continuous conveyor belts or roller conveyors are used, and the workpieces are densely arranged, which can easily lead to uneven cooling (poor heat dissipation in the central area), and high-temperature workpieces are prone to accumulation, deformation, adhesion or oxidation.

[0004] 2. Low cooling efficiency: It mainly relies on natural air cooling or a single fan, resulting in slow heat dissipation and long cooling time;

[0005] 3. No waste collection system, no accumulation of impurities such as oxide scale;

[0006] 4. Low level of automation: Loading and unloading rely on manual labor or simple push rods, which can easily cause workpieces to be bumped and damaged.

[0007] To address the aforementioned issues, this invention employs a "toothed positioning strip + rocker arm" mechanism, which spaces and arranges workpieces in an orderly manner, solving the problem of workpiece accumulation. Simultaneously, the workpieces can roll and flip under the stepping transmission of the toothed positioning strip, resulting in more uniform cooling. The segmented cooling system, consisting of "water spray + cooling water pipe assembly + circulating fan assembly," overcomes the bottleneck of single-cooling efficiency, improving overall cooling efficiency while avoiding problems such as workpiece cracking, excessive hardness, high brittleness, and high residual stress. The "funnel + pull-out box" mechanism automatically collects oxide scale, facilitating easy cleaning. The "fully automatic stepping + robotic arm loading and unloading" system enhances automation, reduces labor costs, and prevents workpiece damage from impacts. Summary of the Invention

[0008] The purpose of this invention is to solve the problems existing in the prior art by proposing a step-type cooling conveying device and cooling conveying method.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a step-type cooling conveying device, comprising a control system, a cooling mechanism, a frame mechanism, and a conveying mechanism located inside the frame mechanism.

[0010] The cooling mechanism includes multiple sets of circulating fan units fixed to the top of the frame mechanism. The circulating fan units include centrifugal fans, axial fans and blowers. The cooling mechanism is divided into a water spray cooling section and a water pipe cooling section.

[0011] The frame mechanism includes a frame, an outer sheet metal protective cover on both sides of the frame, an inner sheet metal protective cover, and a sheet metal base plate at the bottom of the conveying mechanism.

[0012] The conveying mechanism includes a translational conveying frame mounted on the frame, a lifting conveying frame located outside the translational conveying frame, a motor fixed at one end of the frame, and a hydraulic cylinder fixed at the other end of the frame. Multiple drive devices for driving the lifting conveying frame to perform a combined translational and circular motion are symmetrically and evenly arranged on both sides of the lifting conveying frame.

[0013] Furthermore, the translational conveyor and the lifting conveyor are a pair. The upper part of the translational conveyor is a toothed positioning strip one, and the lower part is a translational frame. The upper part of the lifting conveyor is a toothed positioning strip two, and the lower part is a lifting frame. Multiple support plates are fixedly connected to the sides of both toothed positioning strip one and toothed positioning strip two. Multiple brackets are fixedly connected to the frame. Rollers are connected to the upper end of the brackets. The bottom surface of the translational frame of the translational conveyor is slidably mounted on the rollers.

[0014] Furthermore, the telescopic end of the hydraulic cylinder is fixedly connected to one end of the translational conveyor frame. When the telescopic end of the hydraulic cylinder is not extended, the tooth pitch p of toothed positioning strip one and toothed positioning strip two is 0mm. When the telescopic end of the hydraulic cylinder is extended, the tooth pitch p of toothed positioning strip one and toothed positioning strip two is 0<p≤50mm. Toothed positioning strip one and toothed positioning strip two remain on the same horizontal line when the telescopic end of the hydraulic cylinder is not extended and when it is extended.

[0015] Furthermore, a fixing block is fixedly connected to the side of the lifting conveyor frame, and one end of a connecting rod is fixed to the lifting conveyor frame through the fixing block. The other end of the connecting rod is fixed to the rocker arm through a bearing. One end of a transmission shaft is fixedly connected to the side of the rocker arm, and the other end of the transmission shaft is fixedly connected to the output shaft of a reducer. The driving device includes a reducer. One end of the input shaft of the reducer is fixedly connected to a coupling, and the other end of the input shaft is fixedly connected to a shrink sleeve.

[0016] Furthermore, two adjacent reducers are fixedly connected by a connecting shaft. One end of the connecting shaft is fixedly connected to the coupling, and the other end is fixedly connected to the expansion sleeve. The rocker arm is disc-shaped, and one end of the transmission shaft is fixed at the center of the rocker arm. Multiple circular holes are arranged in a circumferential array on the disc. The bearing is fixed in one of the circular holes. A support base is provided below the rocker arm. The support base includes a support base and a bearing. The support base is fixedly connected to the frame. There are two bearings, which are symmetrically fixed at both ends of the support base. The rocker arm works in cooperation with the bearings.

[0017] Furthermore, a second transmission shaft is rotatably fixed on the frame above the motor. The output shaft of the motor is connected to the second transmission shaft via multiple V-belts. A second coupling is fixedly connected to each end of the second transmission shaft. Two second reducers are symmetrically arranged on both sides of the second transmission shaft and fixed on the frame. One end of the input shaft of each second reducer is fixedly connected to one end of the second coupling. The output shaft of each second reducer is fixedly connected to a first coupling.

[0018] Furthermore, the axial flow fan is located on one side of the centrifugal fan, the blower is located on one side of the axial flow fan, and both the water spray cooling section and the water pipe cooling section are equipped with circulating fan units. The four sides of the air outlet of the centrifugal fan in the water spray cooling section are evenly provided with multiple water spray nozzles, and both ends of the water spray cooling section and the water pipe cooling section are respectively provided with door curtains.

[0019] Furthermore, the two ends of the translational conveyor are a loading station and a unloading station, respectively. A cylinder is provided on one side of the loading station, and a waste conveying channel is provided on the other side of the loading station. The sheet metal base plate has an inverted V-shaped cross section. One of the drive shafts passes through the side of the sheet metal base plate, and one of the reducers is located on the outside of the sheet metal base plate.

[0020] Furthermore, multiple sets of cooling water pipes are fixed inside the inner sheet metal protective cover of the water pipe cooling section, and multiple funnels are provided at the bottom of the water pipe cooling section, with pull-out boxes fixedly connected to the bottom of the funnels.

[0021] A cooling conveying method, applied to any of the above-described step-type cooling conveying devices, includes the following steps:

[0022] S1. The robotic arm grabs the workpiece to be cooled and places it on the tooth root of the loading station of the translation conveyor. It checks whether the appearance and size of the workpiece meet the process requirements. If they do, proceed to step S2. If they do not, control the extension end of the cylinder to extend and grab another workpiece to be cooled to the loading station until it passes the inspection.

[0023] S2. When the extension end of the hydraulic cylinder extends, the toothed positioning bar 1 of the translation conveyor is driven to move to the left by the hydraulic cylinder. The control system controls the motor to rotate, which drives the reducer 1 and the rocker arm to rotate. The rocker arm drives the transmission shaft 1 to rotate counterclockwise, which in turn drives the toothed positioning bar 2 of the lifting conveyor to rise from the lowest position and move to the rightmost position. At this time, the toothed positioning bar 1 and the toothed positioning bar 2 overlap, and the workpiece is simultaneously located at the root position of the toothed positioning bar 1 and the toothed positioning bar 2.

[0024] S3. The cylinder extension end remains in the extended state, the motor rotates, and the reducer continues to drive the toothed positioning bar 2 to rise and move to the left. The workpiece leaves the toothed positioning bar 1 and follows the toothed positioning bar 2.

[0025] S4. The cylinder retracts, the toothed positioning bar moves to the right, and the reducer drives the toothed positioning bar to descend and move to the left to the rightmost position. At this time, the workpiece and the right inclined surface of the toothed positioning bar 1 adjacent to the toothed root 2 on the left side are in contact.

[0026] S5. The cylinder extension end remains in the retracted state. The reducer continues to drive the toothed positioning bar 2 to descend and move to the right to the lowest position. At the same time, the workpiece leaves the toothed positioning bar 2 and transfers to the toothed positioning bar 1. It then rolls from the right side of the tooth root 2 of the toothed positioning bar 1 to the bottom of the tooth root 2, completing the counterclockwise rolling and flipping of the workpiece.

[0027] S6. Repeat S1-S5 until the workpiece at the loading station is cooled by the water pipe cooling section and the water spray cooling section in sequence, and then reaches the unloading station.

[0028] S7. The robotic arm uses two grippers to remove the workpiece from the unloading station and move it to the next process;

[0029] S8. Repeat S1-S7 until all workpieces have completed the tooth-by-tooth movement, rolling and flipping, and cooling process from the loading station to the unloading station.

[0030] Compared with existing technologies, the advantages of this invention are:

[0031] 1. Stepping conveyor design

[0032] By alternating between lifting conveyor and translation conveyor, the workpiece can be moved in a stepping motion with zero contact.

[0033] The cooperation of toothed positioning strip one and toothed positioning strip two ensures that the workpiece moves tooth by tooth and rolls over, avoiding accumulation and ensuring uniform cooling of the workpiece from all directions;

[0034] 2. High efficiency of the composite cooling system

[0035] Staged cooling: rapid cooling with water spray + slow cooling with water pipes, and curtain design to reduce heat exchange between stages and maintain staged temperature control;

[0036] Multi-fan collaboration: Centrifugal fans jet airflow + water atomization enhance evaporative heat dissipation; axial fans and blowers form a directional circulation air duct to reduce hot air retention;

[0037] Enclosed air duct: A double-layer sheet metal protective cover and an inverted V-shaped base plate are used to construct an enclosed air duct to reduce heat loss;

[0038] 3. Automation and Precision Control

[0039] The linkage mechanism of rocker arm and reducer realizes the combined translational and circular motion of the lifting and conveying frame, resulting in smooth and precise operation;

[0040] The transmission chain of motor → V-belt → drive shaft two → reducer two → reducer one ensures that the lifting conveyor frames on both sides move synchronously.

[0041] 4. Convenience of waste collection and maintenance

[0042] The bottom of the water pipe cooling section is equipped with a funnel and a pull-out box to automatically collect impurities such as oxide scale, solving the problem of waste residue cleaning;

[0043] The modular layout of the circulating fan unit facilitates segmented maintenance and reduces downtime for maintenance. Attached Figure Description

[0044] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0045] Figure 2 This is a front view of the present invention;

[0046] Figure 3 for Figure 2 AA section view;

[0047] Figure 4 This is a three-dimensional structural view of the present invention excluding the cooling mechanism and part of the frame mechanism;

[0048] Figure 5 This is a front view of the present invention excluding the cooling mechanism and part of the frame mechanism;

[0049] Figure 6 This is a schematic diagram illustrating the movement and rolling flipping of the workpiece according to the present invention;

[0050] In the diagram: 1. Conveying mechanism; 11. Motor; 12. Reducer 1; 13. Coupling 1; 14. Expansion sleeve; 15. Rocker arm; 16. Connecting shaft; 17. Bearing 1; 18. Horizontal conveyor frame; 181. Toothed positioning strip 1; 19. Lifting conveyor frame; 191. Toothed positioning strip 2; 110. Fixing block; 111. Drive shaft 1; 112. Drive shaft 2; 113. Support plate; 114. Connecting rod; 115. Support base; 116. Coupling 2; 117. Reducer 2; 118. Hydraulic cylinder.

[0051] 2. Cooling mechanism; 21. Centrifugal fan; 22. Axial flow fan; 23. Blower; 24. Water spray cooling section; 241. Water spray nozzle; 25. Water pipe cooling section.

[0052] 3. Frame structure; 31. Frame; 32. Outer sheet metal cover; 33. Inner sheet metal cover; 34. Pull-out box; 35. Sheet metal base plate; 36. Cooling water pipe assembly.

[0053] 4. Cylinder; 5. Waste conveyor. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Example 1, such as Figures 1-5 As shown, a step-type cooling conveying device includes a control system, a cooling mechanism 2, a frame mechanism 3, and a conveying mechanism 1 located inside the frame mechanism 3.

[0057] The cooling mechanism 2 includes multiple sets of circulating fan units fixed to the top of the frame mechanism 3. The circulating fan units include centrifugal fan 21, axial fan 22 and blower 23. The cooling mechanism 2 is divided into a water spray cooling section 24 and a water pipe cooling section 25.

[0058] The frame mechanism 3 includes a frame 31, an outer sheet metal cover 32 located on both sides of the frame 31, an inner sheet metal cover 33, and a sheet metal base plate 35 located at the bottom of the conveying mechanism 1.

[0059] The conveying mechanism 1 includes a translational conveying frame 18 mounted on the frame 31, a lifting conveying frame 19 located outside the translational conveying frame 18, a motor 11 fixed at one end of the frame 31, and a hydraulic cylinder 118 fixed at the other end of the frame 31. Multiple driving devices for driving the lifting conveying frame 19 to perform a combined translational and circumferential motion are symmetrically and evenly arranged on both sides of the lifting conveying frame 19.

[0060] The axial flow fan 22 is located on one side of the centrifugal fan 21, and the blower 23 is located on one side of the axial flow fan 22. Both the water spray cooling section 24 and the water pipe cooling section 25 are equipped with circulating fan units. Multiple water spray nozzles 241 are evenly provided on the four sides of the air outlet of the centrifugal fan 21 in the water spray cooling section 24. Both ends of the water spray cooling section 24 and the water pipe cooling section 25 are respectively equipped with door curtains.

[0061] Multiple sets of cooling water pipes 36 are fixed inside the inner sheet metal protective cover 33 of the water pipe cooling section 25. Multiple funnels are provided at the bottom of the water pipe cooling section 25, and a pull-out box 34 is fixedly connected to the bottom of the funnel.

[0062] In this embodiment, a staged cooling method is adopted: the temperature of the workpiece after forging can reach a high temperature of 900°C. The high temperature workpiece is first cooled slowly at a constant temperature in the water pipe cooling section 25 (air cooling by circulating fan unit + heat conduction by cooling water pipe group 36) to about 200°C, and then cooled rapidly by the water spray cooling section 24 (air cooling by circulating fan unit + water mist evaporation) to about 80°C.

[0063] Both the water pipe cooling section 25 and the water spray cooling section 24 are equipped with circulating fan units. Each circulating fan unit includes two centrifugal fans 21, two axial flow fans 22, and one blower 23. The specific working process of each circulating fan unit is as follows: the two centrifugal fans 21 simultaneously bring external cold air to the high-temperature workpiece, cooling the workpiece; the cold air then becomes hot air after cooling the high-temperature workpiece. The blower 23 works in conjunction with the two axial flow fans 22 through a duct, generating a stable, low-pressure, high-volume airflow. This airflow is directionally diffused and guided, ensuring uniform airflow over the entire workpiece, reducing eddies, and simultaneously driving the hot air out of the axial flow fan 22's outlet. The blower 23 not only assists the axial flow fan 22 in guiding airflow but also cools the axial flow fan 22 (especially its shaft), reducing the high-temperature impact of hot air on the axial flow fan 22, extending its service life, and can also replace the axial flow fan 22 in case of failure.

[0064] The difference between the water pipe cooling section 25 and the water spray cooling section 24 is that the inner sheet metal protective cover 33 of the water pipe cooling section 25 has multiple sets of cooling water pipes 36 fixed inside. Cooling water flows through the cooling water pipes 36, and the cooling water carries away the heat of the workpiece, further cooling the workpiece. The centrifugal fan 21 of the water pipe cooling section 25 has multiple spray nozzles 241 evenly arranged on the four sides of the air outlet. The spray nozzles 241 are connected to the nozzles of the cooling water pipes. The cooling water is atomized by the nozzles to form water mist. The water mist is driven by the airflow of the circulating fan unit to come into full contact with the workpiece, and cools it down quickly and evenly. Compared with directly spraying water on the workpiece, the water mist is carried by the airflow and directed to reduce the dispersion, which is more water-saving and energy-saving.

[0065] The lengths of the water spray cooling section 24 and the water pipe cooling section 25 can be adjusted according to the actual process and workpiece temperature requirements. In this embodiment, the length of the water spray cooling section 24 is 5 meters, and the length of the water pipe cooling section 25 is 12 meters. The curtains at both ends of the water spray cooling section 24 and the water pipe cooling section 25 are made of stainless steel soft curtains, which reduces the heat exchange between the sections of the water spray cooling section 24 and the water pipe cooling section 25 and maintains segmented temperature control. The funnel + pull-out box 34 set at the bottom of the water pipe cooling section 25 near the unloading station is used to collect workpiece oxide scale and other waste residue. The pull-out box 34 is in the form of a drawer for easy cleaning of waste residue.

[0066] In Example 2, the translational conveyor frame 18 and the lifting conveyor frame 19 are a pair. The upper part of the translational conveyor frame 18 is a toothed positioning strip 181 and the lower part is a translational frame. The upper part of the lifting conveyor frame 19 is a toothed positioning strip 191 and the lower part is a lifting frame. Multiple support plates 113 are fixedly connected to the sides of both the toothed positioning strip 181 and the toothed positioning strip 191. Multiple brackets are fixedly connected to the frame 31. Rollers are connected to the upper end of the brackets. The bottom surface of the translational frame of the translational conveyor frame 18 is slidably mounted on the rollers. The translational conveyor frame 18 can move back and forth on the rollers under the drive of the hydraulic cylinder 118.

[0067] The telescopic end of the hydraulic cylinder 118 is fixedly connected to one end of the translational conveyor frame 18. When the telescopic end of the hydraulic cylinder 118 is not extended, the tooth pitch p of the toothed positioning strip 181 and the toothed positioning strip 191 is 0 mm. When the telescopic end of the hydraulic cylinder 118 is extended, the tooth pitch p of the toothed positioning strip 181 and the toothed positioning strip 191 is 0 < p ≤ 50 mm. The toothed positioning strip 181 and the toothed positioning strip 191 remain on the same horizontal line when the telescopic end of the hydraulic cylinder 118 is not extended and when it is extended.

[0068] The alternating motion of toothed positioning strip 181 and toothed positioning strip 191 can achieve the stepping movement of the workpiece; the tooth pitch p of toothed positioning strip 181 and toothed positioning strip 191 can achieve the rolling of the workpiece on the toothed positioning strip. Based on the above embodiment, reducer 12 drives the lifting conveyor frame 19 to perform a combined translational and circumferential motion, and hydraulic cylinder 118 drives the translational conveyor frame 18 to move back and forth. Taking a workpiece as an example, the initial state in this embodiment is that the workpiece is located at the root of the tooth of toothed positioning strip 181, the extension end of hydraulic cylinder 118 is in the retracted state, and toothed positioning strip 191 is in the lowest position. The stepping movement + rolling of the workpiece is achieved through the following steps (such as...). Figure 6 As shown):

[0069] P1. When the extension end of the hydraulic cylinder 118 extends, the toothed positioning bar 181 of the translational conveyor frame 18 is driven to move to the left by the hydraulic cylinder 118. The reducer 12 drives the toothed positioning bar 191 of the lifting conveyor frame 19 to rise from the lowest position and move to the right (the movement trajectory of the toothed positioning bar 191 is from 6 o'clock to 3 o'clock) to the rightmost position (positive 3 o'clock). At this time, the toothed positioning bar 181 and the toothed positioning bar 191 coincide; the workpiece is simultaneously located at the root position of the toothed positioning bar 181 and the toothed positioning bar 191.

[0070] P2, the extension end of the hydraulic cylinder 118 remains in the extended state (toothed positioning bar 181 remains stationary); the reducer 12 continues to drive the toothed positioning bar 191 to rise and move to the left (from 3 o'clock to 12 o'clock), and the workpiece leaves the toothed positioning bar 181 and moves with the toothed positioning bar 191.

[0071] P3, the extension end of the hydraulic cylinder 118 retracts, and the toothed positioning bar 181 moves to the right; the reducer 12 drives the toothed positioning bar 191 to descend and move to the left (from 12 o'clock to 9 o'clock) to the rightmost (positive 9 o'clock). At this time, the workpiece and the right inclined surface of the tooth root 2 (tooth root 2 is located on the left side of tooth root 181) of the toothed positioning bar 181 are in contact.

[0072] P4, the extension end of the hydraulic cylinder 118 remains in the retracted state (toothed positioning bar 181 remains stationary); the reducer 12 continues to drive the toothed positioning bar 191 to descend and move to the right (from 9 o'clock to 6 o'clock) to the lowest position (positive 6 o'clock direction). At the same time, the workpiece leaves the toothed positioning bar 191 and transfers to the toothed positioning bar 181, and rolls from the right inclined surface of the tooth root 2 of the toothed positioning bar 181 to the bottom of the tooth root 2.

[0073] P5. Repeat P1-P4 until all workpieces have completed the tooth-by-tooth movement and rolling flipping from the loading station to the unloading station.

[0074] In embodiment 3, a fixing block 110 is fixedly connected to the side of the lifting conveyor frame 19. One end of a connecting rod 114 is fixed to the lifting conveyor frame 19 through the fixing block 110, and the other end of the connecting rod 114 is fixed to the rocker arm 15 through a bearing 17. One end of a transmission shaft 111 is fixedly connected to the side of the rocker arm 15. The other end of the transmission shaft 111 is fixedly connected to the output shaft of the reducer 12. The driving device includes a reducer 12. One end of the input shaft of the reducer 12 is fixedly connected to a coupling 13, and the other end of the input shaft is fixedly connected to a shrink sleeve 14.

[0075] Two adjacent reducers 12 are fixedly connected by a connecting shaft 16. One end of the connecting shaft 16 is fixedly connected to the coupling 13, and the other end is fixedly connected to the expansion sleeve 14. The rocker arm 15 is disc-shaped. One end of the transmission shaft 111 is fixed at the center of the rocker arm 15. Multiple circular holes are arranged in a circumferential array on the disc. The bearing 17 is fixed in one of the circular holes. A support base 115 is provided below the rocker arm 15. The support base 115 includes a support base and a bearing. The support base is fixedly connected to the frame 31. There are two bearings, which are symmetrically fixed at both ends of the support base. The rocker arm 15 works in cooperation with the bearings.

[0076] A drive shaft 112 is rotatably fixed on the frame 31 above the motor 11. The output shaft of the motor 11 is connected to the drive shaft 112 via multiple V-belts. A coupling 116 is fixedly connected to each end of the drive shaft 112. Two reducers 117 are symmetrically arranged on both sides of the drive shaft 112 and fixed on the frame 31. One end of the input shaft of each reducer 117 is fixedly connected to one end of the coupling 116. The output shafts of the reducers 117 are fixedly connected to couplings 13.

[0077] The two ends of the translational conveyor frame 18 are the loading station and the unloading station, respectively.

[0078] In this embodiment, a motor 11 provides power to the invention, ensuring that the two lifting conveyor frames 19 move synchronously. The transmission process of the drive chain is as follows:

[0079] 1. Power input: Motor 11 starts → drives transmission shaft 112 to rotate through multiple V-belts;

[0080] 2. Power distribution: The two ends of the drive shaft 212 are connected to two reducers 217 via coupling 216 to ensure synchronous output from both sides (to prevent the lifting conveyor frame 19 from tilting).

[0081] 3. End drive: The output shaft of reducer 117 → coupling 13 → reducer 12 → drives the transmission shaft 111 to rotate;

[0082] 4. Rocker arm 15 movement: Drive shaft 111 is fixed to the center of the disc-shaped rocker arm 15 → rocker arm 15 rotates around the axis of drive shaft 111.

[0083] 5. Movement of the lifting conveyor frame 19: Bearing 17 is fixed on the rocker arm 15 and offset from the center of the rocker arm 15. When the rocker arm rotates, bearing 17 moves in a circle around the center of the rocker arm 15 with a radius of R (R = distance from the center of the rocker arm 15 to the axis of bearing 17). One end of the connecting rod 114 is hinged to bearing 17, and the other end is rigidly locked to the side of the lifting conveyor frame 19 by the fixing block 110. The lifting conveyor frame 19 must follow the movement of the connecting rod 114. Since multiple connecting rods 114 are connected to the lifting conveyor frame 19 on the same horizontal line, the lifting conveyor frame 19 can only maintain a horizontal state and perform a "combined translational and circular motion" in the longitudinal plane.

[0084] The lifting conveyor frame 19 performs a "combined translational and circular motion," including:

[0085] Vertical component: When bearing 17 moves to the top / bottom of the circumference → lifting conveyor 19 rises / falls;

[0086] Horizontal component: When bearing 17 moves to the left / right side of the circumference, the lifting conveyor frame 19 moves to the left / right.

[0087] In this embodiment, the movement trajectory of the workpiece at the loading station and the lifting conveyor 19 can be decomposed into:

[0088] Phase 1: Ascend + Shift to the Right (0° → 90°)

[0089] Rocker arm 15 position: Bearing 17 rotates from 6 o'clock to 3 o'clock (counterclockwise).

[0090] The operation of the translational conveyor 18 and the lifting conveyor 19 corresponds to the toothed positioning strip 181 and toothed positioning strip 191 in step P1 of the above embodiment.

[0091] Phase 2: Ascend + Shift to the left (90° → 180°)

[0092] Rocker arm 15 position: Bearing 17 from 3 o'clock to 12 o'clock.

[0093] The translational conveyor 18 and the lifting conveyor 19 operate in accordance with the toothed positioning strip 181 and toothed positioning strip 191 in step P2 of the above embodiment.

[0094] Phase 3: Descending + Left Shift (180°→270°)

[0095] Rocker arm 15 position: Bearing 17 from 12 o'clock to 9 o'clock direction,

[0096] The translational conveyor 18 and the lifting conveyor 19 operate in accordance with the toothed positioning strip 181 and toothed positioning strip 191 in step P3 of the above embodiment.

[0097] Phase 4: Falling + Left Shift (Low-level Reset, 270°→360°)

[0098] Rocker arm 15 position: Bearing 17 from 9 o'clock to 6 o'clock.

[0099] The translational conveyor 18 and the lifting conveyor 19 operate as follows: corresponding to the toothed positioning strip 181 and toothed positioning strip 191 in step P4 of the above embodiment, and preparing for the next cycle.

[0100] Example 4: A cylinder 4 is provided on one side of the loading station, and a waste conveying channel 5 is provided on the other side of the loading station. The sheet metal base plate 35 has an inverted V-shaped cross section. The drive shaft 111 passes through the side of the sheet metal base plate 35, and the reducer 12 is located on the outside of the sheet metal base plate 35.

[0101] After the workpiece is transferred from the previous process to the loading station, the workpiece's external dimensions are checked to see if they meet the process requirements. If they do, it is conveyed to the unloading station by the translation conveyor 18 and the lifting conveyor 19. If it does not meet the requirements, the extension end of the cylinder 4 is controlled to push the unqualified workpiece to the waste conveyor 5, from which it is transferred to the ground to wait for rework or secondary processing. A new workpiece to be cooled is then picked up, and this process is repeated to pick up and check the workpiece. Once the workpiece meets the process requirements, it is conveyed to the unloading station by the translation conveyor 18 and the lifting conveyor 19.

[0102] Example 5, a cooling conveying method, based on any of the above-described embodiments, includes the following steps:

[0103] S1. The robot arm grabs the workpiece to be cooled and places it on the tooth root of the loading station of the translation conveyor 18. It checks whether the appearance and size of the workpiece meet the process requirements. If it does, proceed to step S2. If it does not, control the extension end of the cylinder 4 to extend and grab another workpiece to be cooled to the loading station until it passes the inspection.

[0104] S2. When the extension end of the hydraulic cylinder 118 is extended, the toothed positioning bar 181 of the translation conveyor frame 18 is driven to move to the left by the hydraulic cylinder 118. The control system controls the motor 11 to rotate, which drives the reducer 12 and the rocker arm 15 to rotate. The rocker arm 15 drives the transmission shaft 111 to rotate counterclockwise, which in turn drives the toothed positioning bar 191 of the lifting conveyor frame 19 to rise from the lowest position and move to the right (the movement trajectory of the toothed positioning bar 191 is from 6 o'clock to 3 o'clock) to the rightmost position (positive 3 o'clock). At this time, the toothed positioning bar 181 and the toothed positioning bar 191 overlap, and the workpiece is simultaneously located at the root position of the toothed positioning bar 181 and the toothed positioning bar 191.

[0105] S3, the extension end of the hydraulic cylinder 118 remains in the extended state (toothed positioning bar 181 does not move), the motor 11 rotates, and the reducer 12 continues to drive the toothed positioning bar 191 to rise and move to the left (from 3 o'clock to 12 o'clock). The workpiece leaves the toothed positioning bar 181 and moves with the toothed positioning bar 191.

[0106] S4. The extension end of the hydraulic cylinder 118 retracts, the toothed positioning bar 181 moves to the right, and the reducer 12 drives the toothed positioning bar 191 to descend and move to the left (from 12 o'clock to 9 o'clock) to the rightmost (positive 9 o'clock). At this time, the workpiece contacts the right inclined surface of the toothed positioning bar 181, which is adjacent to the toothed root 1 on the left side.

[0107] S5. The extension end of the hydraulic cylinder 118 remains in the retracted state (toothed positioning bar 181 remains stationary). The reducer 12 continues to drive the toothed positioning bar 191 to descend and move to the right (from 9 o'clock to 6 o'clock) to the lowest position (positive 6 o'clock). At the same time, the workpiece leaves the toothed positioning bar 191 and transfers to the toothed positioning bar 181, and rolls from the right inclined surface of the tooth root 2 of the toothed positioning bar 181 to the tooth root 2, completing the counterclockwise rolling and flipping of the workpiece.

[0108] S6. Repeat S1-S5 until the workpiece at the loading station is cooled by the water pipe cooling section 25 and the water spray cooling section 24 in sequence, and then reaches the unloading station.

[0109] S7. The robotic arm uses two grippers to remove the workpiece from the unloading station and move it to the next process;

[0110] S8. Repeat S1-S7 until all workpieces have completed the tooth-by-tooth movement, rolling and flipping, and cooling process from the loading station to the unloading station.

[0111] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A step-by-step cooling conveying device, comprising a control system, a cooling mechanism (2), a rack mechanism (3), a conveying mechanism (1) inside the rack mechanism (3), characterized in that, the cooling mechanism (2) comprises a plurality of circulating fan groups fixed on the top of the rack mechanism (3), the circulating fan groups comprising centrifugal fans (21), axial flow fans (22) and air blowers (23), and the cooling mechanism (2) is divided into a water spray cooling section (24) and a water pipe cooling section (25); the rack mechanism (3) comprises a rack (31), outer layer sheet metal shrouds (32) on both sides of the rack (31), inner layer sheet metal shrouds (33) and a sheet metal bottom plate (35) at the bottom of the conveying mechanism (1); the conveying mechanism (1) comprises a translation conveying frame (18) arranged on the rack (31), a lifting conveying frame (19) outside the translation conveying frame (18), a motor (11) fixed at one end of the rack (31) and an oil cylinder (118) fixed at the other end of the rack (31), and a plurality of driving devices are symmetrically and uniformly arranged on both sides of the lifting conveying frame (19) to drive the lifting conveying frame (19) to make a combined motion of translation and circumference; the translation conveying frame (18) has a feeding station and a discharging station at both ends, a gas cylinder (4) is arranged on one side of the feeding station, a waste conveying path (5) is correspondingly arranged on the other side of the feeding station, the sheet metal bottom plate (35) has an inverted U-shaped cross section, a transmission shaft (111) penetrates through the side of the sheet metal bottom plate (35), and a speed reducer (12) is arranged outside the sheet metal bottom plate (35); the translation conveying frame (18) and the lifting conveying frame (19) are a pair of each, the upper part of the translation conveying frame (18) is a tooth-shaped positioning strip one (181), and the lower part is a translation frame, the upper part of the lifting conveying frame (19) is a tooth-shaped positioning strip two (191), and the lower part is a lifting frame, a plurality of support plates (113) are fixedly connected to the sides of the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191), a plurality of supports are fixedly connected to the rack (31), rollers are connected to the upper ends of the supports, and the bottom surface of the translation frame of the translation conveying frame (18) is slidably arranged on the rollers; the extension end of the oil cylinder (118) is fixedly connected to one end of the translation conveying frame (18), when the extension end of the oil cylinder (118) is not extended, the tooth pitch p of the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191) is 0 mm, when the extension end of the oil cylinder (118) is extended, the tooth pitch p of the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191) is 0 < p ≤ 50 mm, and the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191) remain on the same horizontal line when the extension end of the oil cylinder (118) is not extended and extended.

2. A step-cooling conveyor as claimed in claim 1, wherein, The lifting conveying frame (19) is fixedly connected with a fixed block (110) on the side, one end of a connecting rod (114) is fixedly penetrated through the fixed block (110) on the lifting conveying frame (19), the other end of the connecting rod (114) is fixedly connected with the bearing one (17) on the rocker arm (15), one end of the transmission shaft one (111) is fixedly connected with the rocker arm (15) on the side, the other end of the transmission shaft one (111) is fixedly connected with the output shaft of the speed reducer one (12), and the driving device comprises the speed reducer one (12).

3. A step-cooling conveyor as claimed in claim 2, wherein, Two adjacent speed reducers one (12) are fixedly connected through a connecting shaft (16), one end of the connecting shaft (16) is fixedly connected with the shaft coupling one (13), and the other end of the connecting shaft (16) is fixedly connected with the expansion sleeve (14), the rocker arm (15) is in a disc shape, one end of the transmission shaft one (111) is fixedly connected with the center of the rocker arm (15), a plurality of round holes are arranged in the circumference of the disc, the bearing one (17) is fixedly arranged in one round hole, and a supporting seat (115) is arranged below the rocker arm (15).

4. A step-cooling conveyor as defined in claim 1, wherein The motor (11) is provided with a transmission shaft two (112) rotatably fixed on the rack (31) above, the output shaft of the motor (11) is in transmission connection with the transmission shaft two (112) through a plurality of V-shaped belts, the transmission shaft two (112) is fixedly connected with a shaft coupling two (116) at two ends, respectively, two speed reducers two (117) are symmetrically arranged on the rack (31) on the two sides of the transmission shaft two (112), one end of the input shaft of each speed reducer two (117) is fixedly connected with one end of the shaft coupling two (116), and the output shaft of the speed reducer two (117) is fixedly connected with the shaft coupling one (13).

5. A step-cooling conveyor as defined in claim 1, wherein The axial flow fan (22) is located on one side of the centrifugal fan (21), the air blower (23) is located on one side of the axial flow fan (22), the water spraying cooling section (24) and the water pipe cooling section (25) are provided with circulating fan groups, the air outlet of the centrifugal fan (21) of the water spraying cooling section (24) is uniformly provided with a plurality of water spraying openings (241) on four sides, and the water spraying cooling section (24) and the water pipe cooling section (25) are respectively provided with door curtains at two ends.

6. A step-cooling conveyor as defined in claim 1, wherein The inner layer metal shield (33) of the water pipe cooling section (25) is fixedly provided with a plurality of cooling water pipe groups (36) on the inner side, the bottom of the water pipe cooling section (25) is provided with a plurality of funnels, and the bottom of each funnel is fixedly connected with a pull-out box (34).

7. A cooling and conveying method applied to the stepwise cooling and conveying device according to any one of claims 2-6, characterized in that, The method comprises the following steps: S1, the mechanical hand one picks up the workpiece to be cooled, and places it on the tooth root of the feeding station of the translation conveying frame (18), and detects whether the appearance size of the workpiece meets the process requirements, if it meets, then step S2 is entered; if it does not meet, the telescopic end of the air cylinder (4) is elongated, and a workpiece to be cooled is re-picked up to the feeding station until the detection is qualified; S2, the telescopic end of the oil cylinder (118) is elongated, the tooth-shaped positioning strip one (181) of the translation conveying frame (18) is driven by the oil cylinder (118) to move to the left, the control system controls the motor (11) to rotate, drives the speed reducer one (12) and the rocker arm (15) to rotate, the rocker arm (15) drives the transmission shaft one (111) to rotate counterclockwise, and then drives the tooth-shaped positioning strip two (191) of the lifting conveying frame (19) to rise + move to the right from the lowest position to the rightmost position, at this time, the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191) coincide, and the workpiece is located at the tooth root position of the tooth-shaped positioning strip one (181) and the tooth-shaped positioning strip two (191) at the same time; S3, the telescopic end of the oil cylinder (118) remains in the elongated state, the motor (11) rotates, and the speed reducer one (12) continues to drive the tooth-shaped positioning strip two (191) to rise + move to the left, and the workpiece moves away from the tooth-shaped positioning strip one (181) and follows the tooth-shaped positioning strip two (191); S4, the telescopic end of the oil cylinder (118) is retracted, the tooth-shaped positioning strip one (181) moves to the right, and the speed reducer one (12) drives the tooth-shaped positioning strip two (191) to descend + move to the right to the rightmost position, at this time, the workpiece and the tooth-shaped positioning strip one (181) tooth root one left side adjacent tooth root two right side slope contact; S5, the telescopic end of the oil cylinder (118) remains in the retracted state, the speed reducer one (12) continues to drive the tooth-shaped positioning strip two (191) to descend + move to the right to the lowest position, at the same time, the workpiece moves away from the tooth-shaped positioning strip two (191) and is transferred to the tooth-shaped positioning strip one (181), and rolls from the tooth-shaped positioning strip one (181) tooth root two right side slope to tooth root two bottom, completing the counterclockwise rolling of the workpiece; S6, repeat S1-S5, until the workpiece of the feeding station is cooled by the water pipe cooling section (25) and the water spray cooling section (24) in turn, and reaches the discharging station; S7, the mechanical hand two clamps the workpiece of the discharging station to the next process; S8, repeat S1-S7, until all workpieces are moved from the feeding station to the discharging station, rolled and cooled.

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