Crankshaft conveying equipment based on automatic feeding and posture correction

Abstract

The application belongs to the technical field of crankshaft processing, and particularly relates to a crankshaft conveying device based on automatic feeding and unloading and posture correction, which comprises a device main body, the inside of the device main body is provided with two groups of conveying belts, a plurality of moving plates are arranged at equal intervals on the outside of the conveying belts, supporting plates are fixed to the two sides of the top end of each moving plate, the top end of each moving plate is provided with two groups of first positioning blocks and second positioning blocks, the first positioning blocks and the second positioning blocks can lift the crank arms, and a pushing assembly is arranged below each moving plate; through the first positioning blocks provided with bidirectional slope surfaces and limiting grooves, the plate turning structures capable of automatic resetting, and the second guide plates and the third guide plates capable of time-sharing guiding, time-sharing lifting actions of the first positioning blocks and the second positioning blocks are realized, the crank arms with different inclination angles can be adaptively guided and corrected, the posture deviation problem after the crankshaft is fed can be effectively corrected, and the crank arms can be ensured to be always in the precise machining position.

Description

Technical Field

[0001] This invention belongs to the field of crankshaft processing technology, specifically a crankshaft conveying device based on automatic loading and unloading and attitude correction. Background Technology

[0002] The crankshaft is a core load-bearing transmission component of an engine, involving numerous processing steps and a large single-piece weight. Continuous transport is required between processing, heat treatment, cleaning, and inspection stages. Currently, automated crankshaft production lines are generally equipped with independent conveyor mechanisms and loading / unloading units. Mainstream conveyor systems include roller conveyors, chain conveyors, and V-shaped load-bearing buffer racks. Loading and unloading rely on gantry robots and multi-axis industrial robots to achieve workpiece transfer. The entire system connects the raw material silo, various machine tools, and finished product receiving station, meeting the basic transport needs of continuous batch production.

[0003] The existing crankshaft conveying and loading / unloading system adopts a split layout design. At the loading end, manual or robotic personnel place the crankshaft blank on a fixed V-shaped support roller conveyor, and the workpiece is conveyed stepwise by a motor-driven roller and chain. After the crankshaft is transferred to the machine tool feeding side, a robotic arm picks up the workpiece and sends it into a tooling fixture for processing. After processing, the robotic arm removes the workpiece and returns it to the conveyor line. The entire workpiece conveying process relies on fixed limit blocks to limit the crankshaft placement position. If the crankshaft is misaligned, flipped, or misplaced, it needs to be transferred to an independent calibration table. The crankshaft crank and main journal orientation are adjusted by cylinder pushing and manual assistance. After calibration, it is returned to the conveyor channel for the next process. The conveying, loading / unloading, and attitude calibration workstations operate independently, and the start and stop of each mechanism are linked by external signals.

[0004] When existing crankshaft conveying equipment is in operation, the crankshaft must be accurately placed in a fixed bearing fixture. If the crankshaft is misplaced, the fixture cannot effectively restrain the crankshaft, and the crankshaft is prone to falling off during the conveying process. At the same time, downstream processing equipment has difficulty accurately positioning the crankshaft processing reference, which interferes with the normal operation of the processing program.

[0005] Therefore, the present invention provides a crankshaft conveying device based on automatic loading and unloading and posture correction. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The crankshaft conveying device based on automatic loading and unloading and attitude correction of the present invention includes a main body of the device. Two sets of conveyor belts are installed inside the main body of the device. Multiple moving plates are arranged at equal intervals on the outer side of the conveyor belts. The two ends of the moving plates are respectively fixedly connected to the two conveyor belts. Support plates are fixed on both sides of the top of the moving plates. The two ends of the crankshaft can be inserted into the grooves of the support plates. Two sets of first positioning blocks and second positioning blocks are arranged on the top of the moving plates. The first positioning blocks and second positioning blocks can lift the crank arm. A pushing component is arranged below the moving plates. The pushing component can push the first positioning blocks and second positioning blocks to rise. The first positioning block and the second positioning block each have a first slope on one side of their top ends, and a limit groove is provided on one side of the first slope.

[0008] Preferably, the pushing component includes a second push rod fixed to the bottom end of the first positioning block, a first top plate fixed to the bottom end of the second push rod, a second spring sleeved on the outside of the second push rod, the top end of the second spring fixedly connected to the moving plate, the bottom end of the second spring fixedly connected to the first top plate, a support frame fixed inside the main body of the equipment, and a second guide plate fixed to one end of the support frame located at the feeding position.

[0009] Preferably, a second slope is provided on the other side of the top of the first positioning block, and an upward protrusion is formed at the junction of the first slope and the second slope. A storage groove is provided at the top of the first positioning block, and a flap is rotatably connected to one end of the storage groove. A pushing structure is provided inside the first positioning block. When the crank arm is at its lowest angle, the top of the protrusion is biased toward the limiting groove.

[0010] Preferably, the pushing structure includes a connecting shaft fixed on both sides of the flip plate, the connecting shaft being rotatably connected to the first positioning block, a coil spring being fixed to the outside of the connecting shaft, and the other end of the coil spring being fixedly connected to the first positioning block.

[0011] Preferably, the flap is provided with a slot at the end away from the connecting shaft, a push plate is slidably connected to the side of the first positioning block near the slot, an insert plate is fixed to the side of the push plate near the slot, a third spring is fixed to the side of the push plate away from the insert plate, and the other end of the third spring is fixedly connected to the first positioning block.

[0012] Preferably, a first gear is fixed to the end of the connecting shaft, and a second gear is meshed below the first gear. Both the first gear and the second gear are rotatably connected inside the first positioning block. A rack is meshed on one side of the second gear, and the rack is slidably connected inside the first positioning block.

[0013] Preferably, the end of the insert plate has an upward-facing inclined surface, and the end of the flap can contact the inclined surface of the insert plate.

[0014] Preferably, a second push rod is also fixed to the bottom end of the second positioning block, a second top plate is fixed to the bottom end of the second push rod, a second spring is sleeved on the outside of the second push rod, the top end of the second spring is fixedly connected to the moving plate, and the bottom end of the second spring is fixedly connected to the second top plate.

[0015] Preferably, a third guide plate is provided on one side of the support frame at the top of the second guide plate, and the top end of the second guide plate and the bottom end of the third guide plate are on the same vertical line.

[0016] Preferably, a pressure plate is hinged to one side of the support plate, a pressure groove is fixed to one side of the pressure plate, a connecting arm is hinged to one end of the pressure plate, and a first push rod is slidably connected to both sides of the movable plate. The top end of the first push rod is hinged to the other end of the connecting arm, a first spring is sleeved on the outside of the first push rod, a top block is fixed to the bottom end of the first push rod, the bottom end of the first spring is fixedly connected to the top block, and the top end of the first spring is fixedly connected to the movable plate. A first guide plate is provided on one side of the support frame located at the bottom end of the second guide plate, and the bottom end point of the first guide plate and the top end point of the third guide plate are on the same vertical line.

[0017] The beneficial effects of this invention are as follows: 1. The crankshaft conveying device based on automatic loading and unloading and posture correction described in this invention, by setting a first positioning block with a bidirectional slope and a limiting groove, an automatically reset flip-plate structure, and a second and third guide plates for time-sharing guidance, realizes the time-sharing lifting and lowering action of the first positioning block and the second positioning block, can adaptively guide and correct the crankshaft crank arm with different tilt angles, can effectively correct the posture deviation problem after the crankshaft is loaded, and ensure that the crank arm is always in the precise processing position.

[0018] 2. The crankshaft conveying device based on automatic loading and unloading and attitude correction described in this invention, through the first guide plate in conjunction with the top block, the first push rod and the pressure plate assembly, can pre-press and position the shaft bodies at both ends of the crankshaft in advance. At the same time, with the positioning block to press and limit the crank arm, the entire crankshaft is double-fixed, which effectively avoids the crankshaft from shaking or shifting during the attitude correction process, and improves the stability and reliability of the crankshaft conveying process. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2This is a schematic diagram of the crankshaft structure in this invention; Figure 3 This is a schematic diagram of the movable plate structure in this invention; Figure 4 This is a schematic diagram of the support plate structure in this invention; Figure 5 This is a schematic diagram of the first positioning block structure in this invention; Figure 6 This is a schematic diagram of the internal structure of the first positioning block in this invention; Figure 7 This is a schematic diagram of the flap structure in this invention; Figure 8 This is a schematic diagram of the insert structure in this invention; Figure 9 This is a schematic diagram of the support frame structure in this invention.

[0021] In the diagram: 1. Main body of the equipment; 12. Conveyor belt; 13. Moving plate; 131. Support plate; 132. Top block; 133. Pressure plate; 134. Pressure groove; 135. First push rod; 136. First spring; 137. Connecting arm; 14. Support frame; 141. First guide plate; 142. Second guide plate; 143. Third guide plate; 15. First positioning block; 151. Second positioning block; 152. First top plate; 15 3. Second top plate; 154. Second push rod; 155. Second spring; 156. First slope; 157. Second slope; 158. Limiting groove; 159. Storage groove; 16. Flip plate; 161. Connecting shaft; 162. Coil spring; 163. First gear; 164. Second gear; 165. Gear rack; 166. Bayonet; 167. Push plate; 168. Insert plate; 169. Third spring; 2. Crankshaft; 21. Crank arm. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5As shown in the figure, a crankshaft conveying device based on automatic loading and unloading and attitude correction according to an embodiment of the present invention includes a main body 1. Two sets of conveyor belts 12 are installed inside the main body 1. Multiple moving plates 13 are arranged at equal intervals on the outer side of the conveyor belts 12. The two ends of the moving plates 13 are respectively fixedly connected to the two conveyor belts 12. Support plates 131 are fixed on both sides of the top of the moving plates 13. The two ends of the crankshaft 2 can be inserted into the grooves of the support plates 131. Two sets of first positioning blocks 15 and second positioning blocks 151 are arranged on the top of the moving plates 13. The first positioning blocks 15 and the second positioning blocks 151 can lift the crank arm 21. A pushing component is arranged below the moving plates 13. The pushing component can push the first positioning blocks 15 and the second positioning blocks 151 to rise. A first slope 156 is provided on one side of the top of the first positioning block 15 and the second positioning block 151, and a limit groove 158 is provided on one side of the first slope 156.

[0024] During the production of crankshaft 2, multiple processing steps are required, including drilling. During drilling, crankshaft 2 needs to be transported to the drilling equipment, thus requiring the use of a conveyor system. During processing, crankshaft 2 is placed on top of the moving plate 13 at the loading position. Support plates 131 support both ends of crankshaft 2. Then, the conveyor belt 12 rotates, moving the moving plate 13 forward. When the next moving plate 13 reaches the loading position, the conveyor belt 12 stops rotating, and crankshaft 2 is loaded onto the top of the next moving plate 13. The conveyor belt 12 then continues to move the moving plate 13... The crankshaft 2 is driven forward, and the drilling equipment is placed in the path of the conveyor belt 12. When the conveyor belt 12 stops rotating, one of the moving plates 13 drives the crankshaft 2 to move below the drilling equipment. At this time, the drilling equipment drills the crank arm 21 of the crankshaft 2. The crankshaft 2, after drilling, continues to move with the moving plate 13 driven by the conveyor belt 12 and will be conveyed to the other end of the equipment body 1. When the moving plate 13 drives the crankshaft 2 to the other end of the equipment body 1, the crankshaft 2 at the top of the moving plate 13 is removed, thus completing the conveying process of the crankshaft 2. During the conveying process, the drilling equipment is automatically loaded and unloaded. When the crankshaft 2 is placed on top of the moving plate 13, the support plate 131 supports both ends of the crankshaft 2. However, the position of the crank arm 21 is not fixed after placement, causing the crank arm 21 to be out of position for drilling. Therefore, the drilling equipment cannot drill the crank arm 21. Thus, a pushing assembly is set up to push the first positioning block 15 and the second positioning block 151 upwards during the movement of the moving plate 13. During the movement of the first positioning block 15 and the second positioning block 151, if the crank arm 21 is at the horizontal position of the crankshaft 2... In the first positioning block 15 and the second positioning block 151, the limiting groove 158 can fix the crank arm 21 and limit the crank arm 21. When the crank arm 21 tilts upward or downward, when the first positioning block 15 and the second positioning block 151 rise, the first slope 156 guides the crank arm 21 and guides the crank arm 21 into the limiting groove 158, thereby correcting the posture of the crankshaft 2 and the crank arm 21, so as to keep the crankshaft 2 and the crank arm 21 in a fixed position, which facilitates the drilling equipment to drill the crank arm 21.

[0025] like Figures 1 to 9 As shown, the pushing assembly includes a second push rod 154 fixed to the bottom of the first positioning block 15, a first top plate 152 fixed to the bottom of the second push rod 154, a second spring 155 sleeved on the outside of the second push rod 154, the top of the second spring 155 fixedly connected to the moving plate 13, and the bottom of the second spring 155 fixedly connected to the first top plate 152. A support frame 14 is fixed inside the main body 1 of the equipment, and a second guide plate 142 is fixed to one end of the support frame 14 located at the feeding position.

[0026] During the movement of the movable plate 13, the movable plate 13 drives the first top plate 152 to move toward the support frame 14 via the second push rod 154. At this time, the first top plate 152 will move to the position of the second guide plate 142. The second guide plate 142 guides the first top plate 152, and the first top plate 152 is pushed upward. The first top plate 152 pushes the second push rod 154 to move upward. The second push rod 154 drives the first positioning block 15 to move upward to correct the attitude of the crank arm 21 and fix it.

[0027] like Figures 1 to 5 As shown, a second slope 157 is provided on the other side of the top of the first positioning block 15. An upward protrusion is formed at the junction of the first slope 156 and the second slope 157. A storage groove 159 is provided at the top of the first positioning block 15. A flap 16 is rotatably connected to one end of the storage groove 159. A pushing structure is provided inside the first positioning block 15. When the crank arm 21 is at its lowest angle, the top of the protrusion is biased toward the limiting groove 158.

[0028] During use, the crank arm 21 may not be on the side of the limiting groove 158. At this time, the crank arm 21 is on the side of the second slope 157. During the process of the first positioning block 15 rising, the second slope 157 will push the crank arm 21 upward. Through the guide of the surface of the second slope 157, the crank arm 21 can be pushed away from the limiting groove 158. When the crank arm 21 slides to the end on the surface of the second slope 157, the pushing structure is triggered. The pushing structure pushes the flap 16 to rotate upward. The flap 16 continues to push the crank arm 21 towards the limiting groove 158. The maximum rotation angle of the flap 16 is 90°, which can push the crank arm 21 to the side of the limiting groove 158. When the crank arm 21 moves, it will drive the crankshaft 2 to rotate, thereby automatically correcting the posture.

[0029] like Figures 1 to 5 As shown, the pushing structure includes a connecting shaft 161 fixed on both sides of the flap 16. The connecting shaft 161 is rotatably connected to the first positioning block 15. A coil spring 162 is fixed to the outside of the connecting shaft 161. The other end of the coil spring 162 is fixedly connected to the first positioning block 15.

[0030] When the flap 16 needs to push the crank arm 21 to move, the flap 16 is in the state inside the storage groove 159, and the coil spring 162 is in the tightened state. When the crank arm 21 slides to the end of the second slope 157, the flap 16 is triggered. At this time, the spring force of the coil spring 162 drives the flap 16 to rotate upward from inside the storage groove 159. When the flap 16 rotates, it can push the crank arm 21 to one side of the limiting groove 158, thereby providing power for the upward rotation of the flap 16.

[0031] like Figures 1 to 8 As shown, the flap 16 has a slot 166 at one end away from the connecting shaft 161. A push plate 167 is slidably connected inside the first positioning block 15 on the side near the slot 166. An insert plate 168 is fixed on the side of the push plate 167 near the slot 166. A third spring 169 is fixed on the side of the push plate 167 away from the insert plate 168. The other end of the third spring 169 is fixedly connected to the first positioning block 15.

[0032] When the flap 16 is stored inside the storage slot 159, it needs to be limited in order to keep the flap 16 fixed. At this time, the third spring 169 pushes the push plate 167 to insert the insert plate 168 into the slot 166, which can fix the flap 16. When the crank arm 21 slides to the end on the surface of the second slope 157, the crank arm 21 will push the upper part of the push plate 167. At this time, the push plate 167 drives the insert plate 168 to move out of the slot 166, and the flap 16 loses its limit, so that the coil spring 162 can drive the flap 16 to rotate automatically.

[0033] like Figures 1 to 6As shown, a first gear 163 is fixed to the end of the connecting shaft 161, and a second gear 164 is meshed below the first gear 163. Both the first gear 163 and the second gear 164 are rotatably connected inside the first positioning block 15. A rack 165 is meshed on one side of the second gear 164, and the rack 165 is slidably connected inside the first positioning block 15.

[0034] When the first top plate 152 moves to a position away from the surface of the support frame 14, the elastic force of the second spring 155 pushes the first top plate 152 downward to reset. At this time, the second push rod 154 drives the first positioning block 15 to move downward. When the first positioning block 15 moves downward until the rack 165 contacts the top of the moving plate 13, the moving plate 13 pushes the rack 165 in the opposite direction. The rack 165 drives the second gear 164 to rotate. The second gear 164 drives the first gear 163 to rotate. The first gear 163 drives the flip plate 16 to rotate into the storage slot 159 through the connecting shaft 161. At this time, the flip plate 16 can automatically reset into the storage slot 159 for convenient use next time.

[0035] like Figures 1 to 8 As shown, the end of the insert plate 168 has an upward-facing inclined surface, and the end of the flap 16 can contact the inclined surface of the insert plate 168.

[0036] When the flap 16 rotates into the storage slot 159, the end of the flap 16 presses against the inclined surface of the insert plate 168. Guided by the inclined surface, the insert plate 168 is pushed, causing the push plate 167 to move. At this time, the push plate 167 compresses the third spring 169. When the flap 16 is fully reset into the storage slot 159, the position of the latch 166 is aligned with the insert plate 168. At this time, the elastic force of the third spring 169 pushes the push plate 167, and the push plate 167 pushes the insert plate 168 into the latch 166, thereby automatically locking the flap 16 into the storage slot 159. This automatic locking of the flap 16 allows the coil spring 162 to store force.

[0037] like Figures 1 to 3 As shown, a second push rod 154 is also fixed at the bottom of the second positioning block 151, and a second top plate 153 is fixed at the bottom of the second push rod 154. A second spring 155 is sleeved on the outside of the second push rod 154. The top of the second spring 155 is fixedly connected to the moving plate 13, and the bottom of the second spring 155 is fixedly connected to the second top plate 153.

[0038] After the second guide plate 142 pushes the first top plate 152 upward, the first positioning block 15 can correct the posture of the crank arm 21. Then, the positions of the crank arm 21 and the crankshaft 2 need to be fixed. Subsequently, the second top plate 153 is driven by the second push rod 154 to move the second positioning block 151 upward. The second positioning block 151 pushes the crank arm 21 on the other side upward. By lifting and fixing the crank arms 21 on both sides through the first positioning block 15 and the second positioning block 151, the angle of the crank arm 21 and the crankshaft 2 can be fixed, which facilitates the subsequent drilling of the crank arm 21.

[0039] like Figures 1 to 9 As shown, a third guide plate 143 is provided on one side of the top of the second guide plate 142, and the top end of the second guide plate 142 and the bottom end of the third guide plate 143 are on the same vertical line.

[0040] During use, the second guide plate 142 first contacts the first top plate 152, pushing the first top plate 152 upward, thereby causing the second positioning block 151 to rise first and adjust the posture of the crank arm 21. At this time, the second positioning block 151 maintains its original height, thereby preventing interference between the second positioning block 151 and the crank arm 21 during the adjustment process. When the first top plate 152 is guided to the highest position by the second guide plate 142, the first positioning block 15 also rises to the highest position. At this time, the angle adjustment of the crank arm 21 is completed. Then, the second top plate 153 contacts the third guide plate 143, causing the third guide plate 143 to guide the second top plate 153 upward, thereby causing the second top plate 153 to drive the second positioning block 151 to move upward. When the second positioning block 151 moves to the highest position, it can limit the crank arm 21, thereby realizing the simultaneous raising of the first positioning block 15 and the second positioning block 151, preventing the second positioning block 151 from affecting the posture adjustment of the crankshaft 2 and the crank arm 21.

[0041] like Figures 1 to 9 As shown, a pressure plate 133 is hinged to one side of the support plate 131, a pressure groove 134 is fixed to one side of the pressure plate 133, a connecting arm 137 is hinged to one end of the pressure plate 133, a first push rod 135 is slidably connected to both sides of the movable plate 13, the top end of the first push rod 135 is hinged to the other end of the connecting arm 137, a first spring 136 is sleeved on the outside of the first push rod 135, a top block 132 is fixed to the bottom end of the first push rod 135, the bottom end of the first spring 136 is fixedly connected to the top block 132, and the top end of the first spring 136 is fixedly connected to the movable plate 13. A first guide plate 141 is provided on one side of the bottom end of the second guide plate 142 of the support frame 14, and the bottom end point of the first guide plate 141 and the top end point of the third guide plate 143 are on the same vertical line.

[0042] During use, the first positioning block 15 pushes the crank arm 21 upward, causing the crank arm 21 and crankshaft 2 to rotate under force. To prevent the crankshaft 2 from being affected during transport, the two ends of the crankshaft 2 need to be limited. In the initial state, the pressure plate 133 is in a certain position. Figure 4 In the open state, during the movement, before the first positioning block 15 moves upward, the top block 132 first contacts the first guide plate 141. Under the guidance of the first guide plate 141, the top block 132 pushes the connecting arm 137 upward through the first push rod 135. The connecting arm 137 pushes the pressure plate 133 upward, causing the pressure plate 133 to rotate above the support plate 131. This allows the pressure plate 133 to cover the top of the support plate 131 and press against the top of the two ends of the crankshaft 2 through the pressure groove 134, thus achieving pre-positioning of the two ends of the crankshaft 2 and preventing instability during the conveying process.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankshaft conveying device based on automatic loading and unloading and attitude correction, characterized in that: The device includes a main body, inside which two sets of conveyor belts are installed. Multiple movable plates are evenly spaced on the outer side of the conveyor belts. The two ends of each movable plate are fixedly connected to the two conveyor belts. Support plates are fixed on both sides of the top of each movable plate. The two ends of the crankshaft can be inserted into the grooves of the support plates. Two sets of first positioning blocks and second positioning blocks are provided at the top of each movable plate. The first and second positioning blocks can lift the crank arm. A pushing component is provided below the movable plate. The pushing component can push the first and second positioning blocks to rise. The first positioning block and the second positioning block each have a first slope on one side of their top ends, and a limit groove is provided on one side of the first slope.

2. The crankshaft conveying device based on automatic loading and unloading and posture correction according to claim 1, characterized in that: The pushing assembly includes a second push rod fixed to the bottom of the first positioning block, a first top plate fixed to the bottom of the second push rod, a second spring sleeved on the outside of the second push rod, the top of the second spring fixedly connected to the moving plate, and the bottom of the second spring fixedly connected to the first top plate. A support frame is fixed inside the main body of the equipment, and a second guide plate is fixed to one end of the support frame located at the feeding position.

3. The crankshaft conveying device based on automatic loading and unloading and posture correction according to claim 2, characterized in that: A second slope is provided on the other side of the top of the first positioning block. An upward protrusion is formed at the junction of the first slope and the second slope. A storage groove is provided at the top of the first positioning block. A flap is rotatably connected to one end of the storage groove. A pushing structure is provided inside the first positioning block. When the crank arm is at its lowest angle, the top of the protrusion is biased toward the limiting groove.

4. The crankshaft conveying device based on automatic loading and unloading and posture correction according to claim 3, characterized in that: The pushing structure includes a connecting shaft fixed on both sides of the flip plate. The connecting shaft is rotatably connected to the first positioning block. A coil spring is fixed to the outside of the connecting shaft, and the other end of the coil spring is fixedly connected to the first positioning block.

5. The crankshaft conveying device based on automatic loading and unloading and posture correction according to claim 4, characterized in that: The flap is provided with a slot at one end away from the connecting shaft. A push plate is slidably connected to the side of the first positioning block near the slot. An insert plate is fixed to the side of the push plate near the slot. A third spring is fixed to the side of the push plate away from the insert plate. The other end of the third spring is fixedly connected to the first positioning block.

6. The crankshaft conveying device based on automatic loading and unloading and posture correction according to claim 5, characterized in that: A first gear is fixed to the end of the connecting shaft, and a second gear is meshed below the first gear. Both the first gear and the second gear are rotatably connected inside the first positioning block. A rack is meshed on one side of the second gear, and the rack is slidably connected inside the first positioning block.

7. A crankshaft conveying device based on automatic loading / unloading and attitude correction according to claim 6, characterized in that: The end of the insert plate has an upward-facing inclined surface, and the end of the flap can contact the inclined surface of the insert plate.

8. A crankshaft conveying device based on automatic loading and unloading and attitude correction according to claim 2, characterized in that: The bottom end of the second positioning block is also fixed with a second push rod, the bottom end of the second push rod is fixed with a second top plate, a second spring is sleeved on the outside of the second push rod, the top end of the second spring is fixedly connected to the moving plate, and the bottom end of the second spring is fixedly connected to the second top plate.

9. A crankshaft conveying device based on automatic loading and unloading and attitude correction according to claim 8, characterized in that: The support frame has a third guide plate on one side of the top of the second guide plate, and the top end of the second guide plate and the bottom end of the third guide plate are on the same vertical line.

10. A crankshaft conveying device based on automatic loading and unloading and attitude correction according to claim 2, characterized in that: A pressure plate is hinged to one side of the support plate, and a pressure groove is fixed to one side of the pressure plate. A connecting arm is hinged to one end of the pressure plate. First push rods are slidably connected to both sides of the movable plate. The top end of the first push rod is hinged to the other end of the connecting arm. A first spring is sleeved on the outside of the first push rod. A top block is fixed to the bottom end of the first push rod. The bottom end of the first spring is fixedly connected to the top block. The top end of the first spring is fixedly connected to the movable plate. A first guide plate is provided on one side of the support frame located at the bottom end of the second guide plate. The bottom end point of the first guide plate and the top end point of the third guide plate are on the same vertical line.

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