A feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft

Abstract

The application provides a feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft, and belongs to the technical field of machinery. It solves the problem of low processing efficiency. The feeding mechanism comprises a rotating disc arranged on a rack and a guide seat fixed to the rack and having an open top and a blanking hole at the bottom. A material moving hand claw assembly is arranged on the rotating disc. The rotating disc can make the material moving hand claw assembly pass through the blanking hole and the heating position of the heating seat in sequence. The guide seat is provided with a first action block and a second action block opposite to each other, and a receiving groove is formed between the first action block and the second action block. An action spring is arranged between the side of the second action block away from the first action block and the guide seat. The receiving groove is dislocated with the blanking hole when the action spring is in a natural stretching state. A blanking driving element capable of driving the first action block is fixed to the rack. A movable pressing rod is arranged on the rack in the vertical direction. The pressing rod is located above the guide seat and corresponds to the position of the blanking hole. The feeding mechanism has the advantages of ensuring processing precision and improving processing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a feeding mechanism for a crankshaft tempering device for a single-cylinder crankshaft. Background Technology

[0002] The crankshaft is a crucial component of an engine. It bears the force transmitted from the connecting rods and converts it into torque, which is then output through the crankshaft to drive other engine accessories. Depending on the type of engine, crankshafts are divided into single-cylinder crankshafts and multi-cylinder crankshafts. A single-cylinder crankshaft, as the name suggests, is used in a single-cylinder engine. A single-cylinder crankshaft includes a crank pin and two cranks fixedly connected to both ends of the crank pin. Each crank includes crank arms and... Figure 9 The crankshaft 29 shown is fixedly connected to the crank arm and the crank pin. The crankshaft 29 is used to install bearings and make connections. The crankshaft 29 has a fixed end 29a and a mating end 29b. The fixed end 29a is used to fix the crankshaft 29 to the crank pin, and the mating end 29b is provided with external threads (not shown in the figure).

[0003] To ensure the strength of the crankshaft 29, it is first quenched during machining, and then the mating end 29b of the crankshaft 29 is tempered to increase the toughness of its external threads, ensuring that it is not easily broken during use. Currently, workers manually clamp the crankshaft 29 onto the corresponding fixture and temper it on the tempering device. Manual loading by workers can ensure the clamping accuracy of the crankshaft 29 on the fixture to ensure machining accuracy, but this method is very inefficient. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a feeding mechanism for a crankshaft tempering device for a single-cylinder crankshaft, which solves the problem of low processing efficiency while ensuring processing accuracy.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A feeding mechanism for a crankshaft tempering device of a single-cylinder crankshaft, the tempering device including a frame and a heating seat fixed on the frame, characterized in that the feeding mechanism includes a turntable on the frame and a guide seat fixed on the frame, the top of the guide seat is open and the bottom is provided with a discharge hole, the turntable is provided with a material transfer gripper assembly that can move up and down, the turntable rotation can cause the material transfer gripper assembly to pass sequentially below the discharge hole and below the heating position of the heating seat, the guide seat has two opposing action blocks 1 and 2 arranged horizontally inside, and a receiving groove is formed between the two, the side of action block 2 facing away from action block 1 is abutted against the guide seat with an action spring, when the action spring is in a naturally extended state, the receiving groove and the discharge hole are misaligned, the frame is fixed with a discharge drive component, after the crankshaft falls into the receiving groove, the discharge drive component can drive action block 1 to push the crankshaft above the discharge hole, the frame has a movable pressure rod arranged vertically on the frame, the pressure rod is located above the guide seat and corresponds to the position of the discharge hole.

[0007] Initially, the spring is in its natural extended state. The receiving groove formed by the first and second action blocks is misaligned with the discharge hole, and the turntable is positioned below the discharge hole in the transfer gripper assembly. After the crankshaft is guided into the receiving groove with its fixed end facing down, the transfer gripper assembly is moved upwards and close to the discharge hole. Then, the discharge drive drives the first action block to move. As the first action block moves, it pushes the crankshaft and the second action block together, compressing the spring. The spring force of the compressed spring then acts on the crankshaft, thus clamping the crankshaft between the first and second action blocks. This prevents the crankshaft from falling directly out of the discharge hole under its own weight when it is pushed above it. Afterwards, the pressure rod is moved downwards, pressing against the crankshaft and pressing it through the discharge hole into the transfer gripper assembly for clamping. After the crankshaft is clamped by the transfer gripper assembly, the transfer gripper assembly first moves downward to reset, and then the turntable rotates until the transfer gripper assembly is below the heating position of the heating seat. After that, the transfer gripper assembly moves upward to send the crankshaft to the heating position of the heating seat for heating to complete the tempering.

[0008] The loading mechanism of the crankshaft tempering device for this single-cylinder crankshaft, based on a heating seat on the frame of the tempering device, and equipped with a turntable and guide seat, enables automatic loading of the crankshaft onto the tempering device, achieving automated tempering and greatly improving processing efficiency. Furthermore, the crankshaft is clamped by action blocks one and two before being pushed down by the pressure rod through the drop hole into the transfer gripper assembly for clamping, rather than falling directly into the transfer gripper assembly under its own weight. This ensures the clamping accuracy of the crankshaft on the transfer gripper assembly, preventing skewing and ensuring the processing accuracy during subsequent tempering. Simultaneously, the presence of the action spring creates a flexible clamping effect on the crankshaft, rather than a rigid one. This reduces the resistance encountered when the pressure rod pushes the crankshaft downwards, and the compressibility of the action spring allows the crankshaft to be pushed out relatively easily, protecting the outer circumference of the crankshaft from damage during the pushing process.

[0009] In the feeding mechanism of the crankshaft tempering device of a single-cylinder crankshaft described above, a guide surface 1 is connected between the top surface of the first action block and the side facing the second action block, and a guide surface 2 is connected between the top surface of the second action block and the side facing the first action block. The guide surface 1 and the guide surface 2 are both inclined and in opposite directions, and the guide surface 1 and the guide surface 2 are distributed in an inverted V-shape.

[0010] Guide surface one and guide surface two are both inclined in opposite directions, and guide surface one and guide surface two are distributed in an inverted V-shape. This arrangement makes the upper end of the receiving groove formed between action block one and action block two naturally flare outward, which can play a guiding role to ensure that the crankshaft can be smoothly introduced into the receiving groove. This improves processing efficiency and ensures the reliability of the automatic feeding mechanism of the crankshaft tempering device using this single-cylinder crankshaft.

[0011] In the feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft described above, the frame is provided with a mounting seat that can move up and down. The upper end of the pressure rod has an annular protrusion on its outer periphery. The pressure rod passes through the mounting seat and the annular protrusion abuts against the mounting seat. A stop block is also fixed on the mounting seat. The pressure rod has a mounting hole that penetrates the top surface of the pressure rod. A pressure spring is provided in the mounting hole. The upper end of the pressure spring extends out of the mounting hole and abuts against the stop block. The frame is provided with a pressure driving component that can drive the mounting seat to move up and down.

[0012] The two ends of the pressure spring act on the abutment block and the pressure rod, respectively. This means that under normal conditions, the pressure rod, mounting base, and abutment block are vertically fixed together. When the material feeding drive pushes the abutment block one in conjunction with the spring force to move the crankshaft above the material feeding hole, the pressure driving component drives the mounting base downwards, causing the pressure rod to move downwards and press against the crankshaft. This pushes the crankshaft through the material feeding hole onto the material transfer gripper assembly for clamping. Due to the compressibility of the pressure spring, when the pressure rod applies downward pressure on the crankshaft, the compression of the spring softens the downward pressure, preventing damage to the mating end of the crankshaft and ensuring product quality.

[0013] In the feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft described above, a vertically arranged feed pipe is fixed to the top of the guide seat via a column. There is a clearance gap between the lower end of the feed pipe and the top of the guide seat. The feed pipe is located above the receiving groove in the naturally extended state of the working spring. A baffle is also provided on the frame. The baffle includes a baffle plate, a top material block located above the baffle plate, and a connecting plate fixed between the top material block and the baffle plate. The baffle plate is located within the clearance gap and blocks the lower end of the feed pipe. The top material block is located on the side of the guide seat. The side of the feed pipe has a socket for the outer end of the top material block to be inserted. The baffle plate has a clearance notch. A baffle drive is provided on the frame. The baffle drive can drive the baffle to move laterally so that the clearance notch is located below the feed pipe. The outer end of the top material block protrudes out of the clearance notch along the direction of the baffle's movement, and the outer end of the top material block can deform in the opposite direction of its protrusion when squeezed.

[0014] In actual use, the upper end of the feed tube is connected to the discharge port of the vibratory feeder. The vibratory feeder then sequentially feeds batches of crankshafts into the feed tube with their fixed ends facing downwards, thus achieving a higher degree of automation. Initially, the baffle plate of the baffle component blocks the lower end of the feed tube, while the top block of the baffle component is located outside the feed tube. The height difference between the baffle plate and the top block is greater than the length of a single crankshaft but less than the sum of the lengths of two crankshafts. After at least two crankshafts have been fed into the feed tube, the baffle component is controlled to move horizontally, so that the clearance notch on the baffle plate aligns with the lower end of the feed tube, and the outer end of the top block is inserted into the feed tube through the insertion port. After the clearance notch aligns with the feed pipe, it is equivalent to the lower end of the feed pipe being opened. The last crankshaft located inside the feed pipe falls into the receiving groove formed between action block one and action block two, while the outer end of the top block pushes the second-to-last crankshaft against the inner wall of the feed pipe to ensure that it does not fall.

[0015] In this design, the outer end of the top material block protrudes beyond the clearance notch on the baffle plate along the translational direction of the baffle component. When the outer end of the top material block is compressed, it can deform in the opposite direction of its protrusion. This means that when the outer end of the top material block passes through the insertion port, the baffle plate still blocks the lower end of the feed tube. This design ensures that the top material block pressing down on the second-to-last crankshaft and the baffle plate opening the lower end of the feed tube through the clearance not occur simultaneously. Instead, the baffle plate gradually opens the lower end of the feed tube after the top material block presses down on the second-to-last crankshaft. This ensures that the second-to-last crankshaft will not be partially exposed outside the lower end of the feed tube when the first-to-last crankshaft falls into the receiving groove, reducing the failure rate and ensuring the reliability of the operation. The specific process is as follows: When the outer end of the top material block passes through the inlet and presses the second-to-last crankshaft onto the inner wall of the feed tube, the path for the outer end of the top material block to continue moving forward is blocked. However, the entire baffle is still driven by the baffle drive to move. At this time, the outer end of the top material block will deform backward under the reaction force of the inner wall of the feed tube. Through this deformation, the baffle plate, which is fixedly connected to the inner end of the top material block through the connecting plate, can still continue to move forward, thereby completely opening the lower end of the feed tube and causing the second-to-last crankshaft to fall out of the feed tube.

[0016] In conventional technology, in order to ensure that the penultimate crankshaft is pressed down before the feed tube is opened to allow the penultimate crankshaft to fall, the top block and the baffle are set up independently and controlled by separate drive components. That is, the movement of the top block and the movement of the baffle are controlled separately, rather than the baffle and the top block are integrated and controlled by only one baffle drive component.

[0017] In the feeding mechanism of the crankshaft tempering device of a single-cylinder crankshaft described above, the top material block includes a fixed block and a moving block. The fixed block has a cavity, and the inner end of the moving block is located in the cavity of the fixed block. A linkage spring is also provided in the cavity of the fixed block. The two ends of the linkage spring abut against the inner end of the moving block and the fixed block, respectively. The inner end of the moving block has a shoulder, and the cavity of the fixed block has a stop. Under the action of the linkage spring, the shoulder of the moving block abuts against the stop of the fixed block. A connecting plate is fixedly connected between the fixed block and the baffle plate, and the baffle drive is connected to the fixed block.

[0018] In its natural state, the stationary block and the moving block are linked by the spring force of the linkage spring and the abutment of the shoulder and the protrusion. That is, when the stopper drive drives the stationary block to move, the moving block will move along with it, thereby realizing the movement of the entire top pressing block. The moving block is equivalent to the outer end of the entire top pressing block. When the moving block passes through the socket and abuts against the crankshaft, although the moving block can no longer move at this time, the compressibility of the linkage spring allows the stationary block to continue to move forward. In this way, even when the top pressing block has been inserted into the socket and pressed down on the crankshaft, the stopper plate, which is fixedly connected to the stationary block by the connecting plate, can still continue to move forward. This ensures that the lower end of the feed tube is opened only after the second-to-last crankshaft in the feed tube is pressed down first, allowing the last crankshaft to fall into the receiving groove, thus ensuring the reliability of the operation.

[0019] In the feeding mechanism of the crankshaft tempering device of a single-cylinder crankshaft described above, the moving direction of the baffle is consistent with that of the action block, the area of ​​the clearance notch is larger than the cross-sectional area of ​​the feed tube, and when the clearance notch is located below the feed tube, the clearance notch is also located below the pressure rod.

[0020] The moving direction of the baffle is consistent with the moving direction of the first actuating block, which simplifies the structure and avoids the problem of multiple translational directions at the guide seat. Furthermore, setting the area of ​​the clearance notch to be larger than the cross-sectional area of ​​the feed tube, and ensuring that the clearance notch is also located below the pressure rod when it is below the feed tube, ensures that the baffle plate does not interfere with the downward pressing action of the pressure rod.

[0021] In the loading mechanism of the crankshaft tempering device for a single-cylinder crankshaft described above, a base is fixed on the turntable, and the material transfer gripper assembly includes a lifting seat that is slidably mounted on the base, a material transfer three-jaw chuck fixedly connected to the top of the lifting seat, and material transfer jaws fixedly connected to each slider of the material transfer three-jaw chuck. The inner end of each material transfer jaw has an arc-shaped clamping surface, and each clamping surface is concentrically arranged. A lifting drive component for driving the lifting seat to move is fixed on the base.

[0022] A base is fixed on the turntable, and the lifting seat of the transfer gripper assembly is slidably mounted on the base. A lifting drive component is fixed on the base, and the lifting seat is driven by the lifting drive component to slide, thereby enabling the entire transfer gripper assembly to move up and down. The transfer gripper assembly also includes a three-jaw chuck fixedly connected to the top of the lifting seat and transfer jaws fixedly connected to each slider of the three-jaw chuck. The inner end of each transfer jaw has an arc-shaped clamping surface, and the clamping surfaces are concentrically arranged. This ensures that the crankshaft can be firmly clamped when the three chucks are closed, thus ensuring the stability of the transferred crankshaft.

[0023] In the loading mechanism of the crankshaft tempering device for a single-cylinder crankshaft described above, the frame is also provided with a feeding gripper assembly. The rotation of the turntable can position the feeding gripper assembly below the feeding gripper assembly. The frame is also fixed with a feeding slide, and the feeding gripper assembly can be moved laterally along the frame to the top of the feeding slide.

[0024] After the crankshaft completes its heat treatment, the control turntable rotates until the transfer gripper assembly is below the unloading gripper assembly. The transfer gripper assembly then moves upwards to hand the crankshaft over to the unloading gripper assembly. Once the unloading gripper assembly clamps the crankshaft, the transfer gripper assembly releases it. The unloading gripper assembly then moves laterally along the frame above the unloading area and releases the crankshaft, allowing it to fall into the unloading chute for automatic unloading. This setup enables the tempering device to have both automatic feeding and unloading functions, further improving processing efficiency.

[0025] In the feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft described above, the number of material transfer gripper assemblies is three, and the three material transfer gripper assemblies are evenly distributed circumferentially.

[0026] Compared with existing technologies, the feeding mechanism of the crankshaft tempering device of this single-cylinder crankshaft has the following advantages:

[0027] 1. With the heating seat installed on the frame of the tempering device, combined with the turntable and guide seat, the crankshaft can be automatically fed on the tempering device, which greatly improves the processing efficiency.

[0028] 2. The arrangement of action block one, action block two and action spring ensures that the crankshaft is clamped by action block one and action block two, and then the pressure rod pushes it through the material drop hole into the material transfer gripper assembly for clamping. This ensures the clamping accuracy of the crankshaft on the material transfer gripper assembly, and ensures that there will be no skewing after clamping, thus ensuring the machining accuracy during subsequent tempering.

[0029] 3. The design of the feed tube allows the feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft to be directly used with a vibratory feeder, further improving efficiency. Furthermore, the outer end of the top material block protrudes beyond the clearance notch on the baffle plate along the translational direction of the baffle, and the outer end of the top material block deforms in the opposite direction of its protrusion when compressed. This means that when the outer end of the top material block passes through the insertion port, the baffle plate still blocks the lower end of the feed tube. This design ensures that the top material block pressing down on the penultimate crankshaft and the baffle plate opening the lower end of the feed tube through the clearance not occur simultaneously. Instead, the top material block first presses down on the penultimate crankshaft, and then the baffle plate gradually opens the lower end of the feed tube. This prevents the penultimate crankshaft from partially protruding from the lower end of the feed tube when the penultimate crankshaft falls into the receiving groove, reducing the failure rate and ensuring operational reliability. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the feeding mechanism of the crankshaft tempering device for this single-cylinder crankshaft.

[0031] Figure 2 This is a three-dimensional schematic diagram of the feeding mechanism of the crankshaft tempering device for this single-cylinder crankshaft from another angle.

[0032] Figure 3 This is a 3D diagram of the turntable.

[0033] Figure 4 This is a three-dimensional schematic diagram of the material guide seat.

[0034] Figure 5 This is a cross-sectional view of the guide seat.

[0035] Figure 6 This is a three-dimensional schematic diagram of the material stop.

[0036] Figure 7 This is a top view of the stop component.

[0037] Figure 8 This is a three-dimensional schematic diagram of the guide seat.

[0038] Figure 9 This is a schematic diagram of the crankshaft.

[0039] In the diagram, 1. Frame; 2. Heating seat; 2a. Heating hole; 3. Cam divider; 4. Turntable; 5. Material transfer gripper assembly; 5a. Lifting seat; 5b. Material transfer three-jaw chuck; 5c. Material transfer gripper; 6. Guide seat; 6a. Drop hole; 7. Actuating block one; 7a. Guide surface one; 8. Actuating block two; 8a. Guide surface two; 9. Receiving groove; 10. Actuating spring; 11. Drop drive component; 12. Pressure rod; 12a. Annular flange; 13. Mounting seat; 14. Abutment block; 15. Pressure spring; 16. Pressure drive component; 17. Vertical... 18. Column; 18a. Feed pipe; 19. Insert; 20. Stopper; 20a. Displacement notch; 21. Top block; 21a. Fixed block; 21a1. Shoulder; 21b. Moving block; 21b1. Protruding shoulder; 21c. Linkage spring; 22. Connecting plate; 23. Stopper drive component; 24. Unloading gripper assembly; 24a. Unloading slide; 24b. Unloading three-jaw chuck; 25. Unloading chute; 26. Unloading drive component; 27. Base; 28. Lifting drive component; 29. ​​Crankshaft; 29a. Fixed end; 29b. Mating end. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] like Figure 1 , Figure 2 and Figure 3As shown, a feeding mechanism for a crankshaft tempering device of a single-cylinder crankshaft is disclosed. The tempering device includes a frame 1, on which a heating seat 2 is fixed. The heating seat 2 has heating holes 2a, and heating coils (not shown in the figure) are embedded in the heating holes 2a. This feeding mechanism includes a turntable 4 mounted on the frame 1 and capable of rotation. Specifically, a cam divider 3 is mounted on the frame 1, and the turntable 4 is fixedly connected to the output shaft of the cam divider 3. The cam divider 3 can drive the turntable 4 to rotate relative to the frame 1. A material transfer gripper assembly 5 capable of moving up and down is mounted on the turntable 4. A base 27 is fixed on the turntable 4. The material transfer gripper assembly 5 includes a lifting seat 5a slidably mounted vertically on the base 27, a material transfer three-jaw chuck 5b fixedly connected to the top of the lifting seat 5a, and material transfer jaws 5c fixedly connected to each slider of the material transfer three-jaw chuck 5b. The inner end of each material transfer jaw 5c has an arc-shaped clamping surface, and the clamping surfaces are concentrically arranged. A guide post is fixedly connected to the base 27 for the lifting seat 5a to slide up and down. A lifting drive component 28 is fixed to the base 27, which drives the lifting seat 5a to slide. Specifically, the lifting drive component 28 is a cylinder with its piston rod facing downward and fixed to the base 27. The cylinder body is fixedly connected to the lifting seat 5a. When air is supplied to the cylinder to move its piston rod downward, it remains stationary because it is fixed to the base 27. Thus, under the action of air pressure, it will push the cylinder body, along with the lifting seat 5a, upward.

[0042] Furthermore, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, this feeding mechanism also includes a guide seat 6 fixed on the frame 1. The top of the guide seat 6 is open and its bottom is provided with a discharge hole 6a. The rotation of the turntable 4 allows the material transfer gripper assembly 5 to pass sequentially below the discharge hole 6a and below the heating position of the heating seat 2. The guide seat 6 has two opposing action blocks 7 and 8 arranged horizontally inside, forming a receiving groove 9 between the action blocks 7 and 8. An action spring 10 is abutting against the side of the action block 8 facing away from the action block 7 and the guide seat 6. When the action spring 10 is in its naturally extended state, the receiving groove 9 is misaligned with the discharge hole 6a. A discharge drive component 11 is fixed on the frame 1, which can drive the action block 7 to move. A guide surface 7a is provided between the top surface of the first action block 7 and the side facing the second action block 8, and a guide surface 8a is provided between the top surface of the second action block 8 and the side facing the first action block 7. Both guide surfaces 7a and 8a are inclined in opposite directions and are distributed in an inverted V-shape. Specifically, the material feeding drive 11 is a cylinder, and one side of the guide seat 6 is also open. The side of the first action block 7 facing away from the second action block 8 extends out of the open side of the guide seat 6 and is fixed to the piston rod of the cylinder. A pressure rod 12 is provided on the frame 1 along the vertical direction. The pressure rod 12 can move up and down and is located above the guide seat 6 and corresponds to the position of the material feeding hole 6a. The frame 1 is equipped with a mounting base 13 that can move up and down. The upper end of the pressure rod 12 has an annular protrusion 12a on its outer periphery. The pressure rod 12 passes through the mounting base 13 and the annular protrusion 12a abuts against the mounting base 13. A stop block 14 is also fixed on the mounting base 13. The pressure rod 12 has a mounting hole that penetrates the top surface of the pressure rod 12. A pressure spring 15 is installed in the mounting hole, and the upper end of the pressure spring 15 extends out of the mounting hole and abuts against the stop block 14. A pressure driving component 16 is fixed on the frame 1, which drives the mounting base 13 to move up and down. Specifically, the pressure driving component 16 is a cylinder, and the mounting base 13 is fixedly connected to the piston rod end of the cylinder.

[0043] Furthermore, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a column 17 is fixedly connected to the top of the guide seat 6, and a feed pipe 18 is fixedly connected to the side of the column 17. The feed pipe 18 is arranged in a vertical direction, and there is a clearance gap between the lower end of the feed pipe 18 and the top of the guide seat 6. The feed pipe 18 is located above the receiving groove 9 when the spring 10 is in its naturally extended state. The frame 1 is also provided with a baffle 19, which includes a baffle plate 20, a top material block 21 located above the baffle plate 20, and a connecting plate 22 fixed between the top material block 21 and the baffle plate 20. The baffle plate 20 is located in the clearance gap and blocks the lower end of the feed pipe 18. The top material block 21 is located on the side of the guide seat 6. The side of the feed pipe 18 is provided with a socket 18a for the outer end of the top material block 21 to be inserted. The baffle plate 20 is provided with a clearance notch 20a. The baffle 19 can be translated laterally so that the clearance notch 20a is located below the feed pipe 18. The outer end of the top material block 21 protrudes out of the clearance notch 20a along the translation direction of the baffle 19, and the outer end of the top material block 21 can deform in the opposite direction of its protrusion when it is squeezed. Specifically, the top material block 21 includes a fixed block 21a and a moving block 21b. The fixed block 21a has a cavity, and the inner end of the moving block 21b is located in the cavity of the fixed block 21a. A linkage spring 21c is also provided in the cavity of the fixed block 21a. The two ends of the linkage spring 21c abut against the inner end of the moving block 21b and the fixed block 21a, respectively. The inner end of the moving block 21b has a shoulder 21b1, and the cavity of the fixed block 21a has a stop shoulder 21a1. Under the action of the linkage spring 21c, the shoulder 21b1 of the moving block 21b abuts against the stop shoulder 21a1 of the fixed block 21a. The connecting plate 22 is fixedly connected between the fixed block 21a and the baffle plate 20. A baffle drive component 23 is provided on the frame 1, and the baffle drive component 23 is connected to the fixed block 21a. The baffle drive component 23 is a cylinder, and the piston rod end of the cylinder is fixedly connected to the inner end of the fixed block 21a. The outer end of the moving block 21b has a mating surface, which is a concave arc surface. In this embodiment, the moving direction of the stop member 19 is consistent with that of the action block 7, and the area of ​​the clearance notch 20a is larger than the cross-sectional area of ​​the feed tube 18. When the clearance notch 20a is located below the feed tube 18, the clearance notch 20a is also located below the pressure rod 12.

[0044] Furthermore, such as Figure 1 , Figure 2 and Figure 3As shown, the frame 1 is also equipped with a feeding gripper assembly 24. The rotation of the turntable 4 can position the feeding gripper assembly 5 below the feeding gripper assembly 24. A feeding slide 25 is fixed on the frame 1. The feeding gripper assembly 24 can be moved laterally along the frame 1 to above the feeding slide 25. A feeding drive component 26 is provided on the frame 1, which drives the feeding gripper assembly 24 to move laterally. Specifically, the feeding drive component 26 is a cylinder. The feeding gripper assembly 24 includes a feeding slide 24a fixedly connected to the end of the cylinder, a feeding three-jaw chuck 24b fixedly connected to the bottom of the feeding slide 24a, and feeding grippers fixedly connected to each slider of the feeding three-jaw chuck 24b.

[0045] In use, the upper end of the feed tube 18 is connected to the discharge port of the vibratory feeder. The vibratory feeder sequentially feeds batches of crankshafts 29 into the feed tube 18 with the fixed end 29a facing downwards. Initially, the three-jaw chuck 5b of the transfer gripper assembly 5 is located below the discharge hole 6a of the guide seat 6. The baffle plate 20 of the baffle 19 blocks the lower end of the feed tube 18, while the top block 21 of the baffle 19 is located outside the feed tube 18. The height difference between the baffle plate 20 and the top block 21 is greater than the length of a single crankshaft 29 but less than the sum of the lengths of two crankshafts 29. After crankshafts 29 are fed into the feed tube 18, the lifting seat 5a of the transfer gripper assembly 5 is driven upwards by the lifting drive 28 to bring the three-jaw chuck 5b close to the discharge hole 6a and put the three-jaw chuck 5b in the open state. Next, the baffle 19 is moved by the baffle drive 23. As the baffle 19 moves, the clearance notch 20a on the baffle plate 20 is aligned with the lower end of the feed tube 18, and the outer end of the push block 21, i.e., the moving block 21b, is inserted into the feed tube 18 through the insertion port 18a. After the clearance notch 20a is aligned with the feed tube 18, it is equivalent to the lower end of the feed tube 18 being opened. The penultimate crankshaft 29 located in the feed tube 18 falls into the receiving groove 9 formed between the action block 1 7 and the action block 2 8, while the insertion of the moving block 21b into the feed tube 18 pushes the penultimate crankshaft 29 against the inner wall of the feed tube 18 to ensure that it does not fall.

[0046] After the last crankshaft 29 in the feed tube 18 falls into the receiving groove 9, the baffle 19 is driven to reset and move by the baffle drive 23. The baffle plate 20 re-seals the lower end of the feed tube 18 and the top block 21 exits the feed tube 18. Next, the dropping drive 11 drives the first actuating block 7 to move toward the second actuating block 8. Since the side of the second actuating block 8 facing away from the first actuating block 7 is provided with an actuating spring 10 between it and the guide seat 6, the movement of the first actuating block 7 will push the crankshaft 29 and the second actuating block 8 together and compress the actuating spring 10. The elastic force of the compressed actuating spring 10 will then act back on the crankshaft 29 through the second actuating block 8, thus forming a state in which the first actuating block 7 and the second actuating block 8 clamp the crankshaft 29. After the crankshaft 29 is fed above the discharge hole 6a, the control pressure drive 16 drives the mounting base 13 to move downwards. The mounting base 13 moves downwards along with the pressure rod 12, causing the pressure rod 12 to press against the mating end 29b of the crankshaft 29. As the mounting base 13 continues to move downwards, the pressure rod 12 gradually pushes the crankshaft 29 out of the discharge hole 6a and into the inside of the transfer three-jaw chuck 5b. Then, the transfer three-jaw chuck 5b closes and clamps the fixed end 29a of the crankshaft 29.

[0047] Then, the lifting drive 28 drives the lifting seat 5a of the transfer gripper assembly 5 to move downwards, and then controls the turntable 4 to rotate until the transfer gripper assembly 5 is below the heating position of the heating seat 2. Next, the lifting drive 28 drives the lifting seat 5a of the transfer gripper assembly 5 to move upwards, so that the mating end 29b of the crankshaft 29 extends into the heating hole 2a of the heating seat 2 for heating. After a set time, the lifting drive 28 drives the lifting seat 5a of the transfer gripper assembly 5 to move downwards, and then controls the turntable 4 to rotate until the transfer gripper assembly 5 is below the unloading gripper assembly 24. Then, the lifting drive 28 drives the lifting seat 5a of the transfer gripper assembly 5 to move upwards to send the crankshaft 29 to the inside of the unloading three-jaw chuck 24b in the unloading gripper assembly 24. After the three-jaw chuck 24b closes and clamps the crankshaft 29, the three-jaw chuck 5b releases the crankshaft 29. The unloading drive unit 26 drives the unloading gripper assembly 24 to move above the unloading chute 25, and then controls the three-jaw chuck 24b to release the crankshaft 29. The crankshaft 29 falls into the unloading chute 25 to achieve automatic unloading.

[0048] In this embodiment, there are three material transfer gripper assemblies 5. The three material transfer gripper assemblies 5 are evenly distributed circumferentially. When the first material transfer gripper is located below the material drop hole 6a, the second material transfer gripper assemblies 5 are located below the heating position of the heating seat 2, and the third material transfer gripper assemblies 5 are located below the material discharge gripper assembly 24.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A feeding mechanism for a crankshaft tempering device of a single-cylinder crankshaft, the tempering device comprising a frame (1) and a heating seat (2) fixed on the frame (1), characterized in that, This feeding mechanism includes a turntable (4) mounted on a frame (1) and a guide seat (6) fixed on the frame (1). The top of the guide seat (6) is open and the bottom is provided with a drop hole (6a). The turntable (4) is provided with a material transfer gripper assembly (5) that can move up and down. When the turntable (4) rotates, the material transfer gripper assembly (5) can pass under the drop hole (6a) and under the heating position of the heating seat (2) in sequence. The guide seat (6) is provided with opposing action blocks one (7) and action blocks two (8) along the horizontal direction, and a receiving groove (9) is formed between them. The side of action block two (8) facing away from action block one (7) is connected to the guide seat. A spring (10) is abutting between the material seats (6). When the spring (10) is in its naturally extended state, the receiving groove (9) is misaligned with the dropping hole (6a). A vertically arranged guide pipe (18) is fixed to the top of the guide seat (6) by a column (17). The guide pipe (18) is located above the position of the receiving groove (9) when the spring (10) is in its naturally extended state. A dropping drive component (11) is fixed on the frame (1). After the crankshaft (29) falls into the receiving groove (9), the dropping drive component (11) can drive the action block (7) to push the crankshaft (29) to the dropping hole (6a). Above, a movable pressure bar (12) is provided vertically along the upper edge of the frame (1). The pressure bar (12) is located above the guide seat (6) and corresponds to the position of the drop hole (6a). A guide surface (7a) is connected between the top surface of the first action block (7) and the side facing the second action block (8). A guide surface (8a) is connected between the top surface of the second action block (8) and the side facing the first action block (7). The guide surfaces (7a) and (8a) are both inclined and in opposite directions. The guide surfaces (7a) and (8a) are distributed in an inverted V-shape. The frame (1) is provided with a movable pressure bar (12) that can move up and down. The mounting base (13) is movable. The upper end of the pressure rod (12) has an annular protrusion (12a) on its outer periphery. The pressure rod (12) passes through the mounting base (13) and the annular protrusion (12a) abuts against the mounting base (13). Abutting block (14) is also fixed on the mounting base (13). The pressure rod (12) has a mounting hole that penetrates the top surface of the pressure rod (12). A pressure spring (15) is provided in the mounting hole. The upper end of the pressure spring (15) extends out of the mounting hole and abuts against the abutting block (14). A pressure driving component (16) that can drive the mounting base (13) to move up and down is provided on the frame (1).

2. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 1, characterized in that, There is a clearance between the lower end of the feed pipe (18) and the top of the guide seat (6). The frame (1) is also provided with a baffle (19). The baffle (19) includes a baffle plate (20), a top material block (21) located above the baffle plate (20), and a connecting plate (22) fixed between the top material block (21) and the baffle plate (20). The baffle plate (20) is located in the clearance and blocks the lower end of the feed pipe (18). The top material block (21) is located on the side of the guide seat (6). The side of the feed pipe (18) is provided with The insertion port (18a) of the top material block (21) is inserted into the baffle plate (20), and the baffle plate (20) is provided with a clearance notch (20a). The frame (1) is provided with a baffle drive (23). The baffle drive (23) can drive the baffle (19) to move laterally so that the clearance notch (20a) is located below the feed pipe (18). The outer end of the top material block (21) protrudes out of the clearance notch (20a) along the direction of the translation of the baffle (19), and the outer end of the top material block (21) can deform in the opposite direction of its protrusion when it is squeezed.

3. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 2, characterized in that, The top block (21) includes a fixed block (21a) and a moving block (21b). The fixed block (21a) has a cavity. The inner end of the moving block (21b) is located in the cavity of the fixed block (21a). The cavity of the fixed block (21a) also has a linkage spring (21c). The two ends of the linkage spring (21c) abut against the inner end of the moving block (21b) and the fixed block (21a) respectively. The inner end side of the moving block (21b) has a shoulder (21b1). The cavity of the fixed block (21a) has a stop (21a1). Under the action of the linkage spring (21c), the shoulder (21b1) of the moving block (21b) abuts against the stop (21a1) of the fixed block (21a). The connecting plate (22) is fixedly connected between the fixed block (21a) and the baffle plate (20). The baffle drive (23) is connected to the fixed block (21a).

4. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 2, characterized in that, The moving direction of the stop (19) is consistent with that of the action block (7). The area of ​​the clearance notch (20a) is larger than the cross-sectional area of ​​the feed pipe (18). When the clearance notch (20a) is located below the feed pipe (18), the clearance notch (20a) is also located below the pressure rod (12).

5. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 1, characterized in that, The turntable (4) is fixed with a base (27). The material transfer gripper assembly (5) includes a lifting seat (5a) that is slidably mounted on the base (27) in a vertical direction, a material transfer three-jaw chuck (5b) that is fixedly connected to the top of the lifting seat (5a), and material transfer grippers (5c) that are fixedly connected to each slider of the material transfer three-jaw chuck (5b). The inner end of each material transfer gripper (5c) has an arc-shaped clamping surface and each clamping surface is concentrically arranged. The base (27) is fixed with a lifting drive component (28) for driving the lifting seat (5a) to move.

6. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 5, characterized in that, The frame (1) is also provided with a feeding gripper assembly (24). The rotation of the turntable (4) can make the feeding gripper assembly (5) located below the feeding gripper assembly (24). The frame (1) is also fixed with a feeding slide (25). The feeding gripper assembly (24) can be moved laterally along the frame (1) to the top of the feeding slide (25).

7. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 6, characterized in that, The number of material transfer gripper components (5) is three, and the three material transfer gripper components (5) are evenly distributed in the circumferential direction.

Images