Feeding mechanism of crankshaft tempering device of single-cylinder crankshaft

Abstract

The invention provides a feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft, and belongs to the technical field of machinery. The problem that the machining efficiency is low is solved. The rotating disc is arranged on a machine frame, the material guiding base is fixed to the machine frame, the top of the material guiding base is open, a material falling hole is formed in the bottom of the material guiding base, a material moving paw assembly is arranged on the rotating disc, and the rotating disc rotates to enable the material moving paw assembly to sequentially pass through the material falling hole and the heating position of a heating base. A first acting block and a second acting block which are opposite to each other are arranged in the material guiding base, a material receiving groove is formed between the first acting block and the second acting block, an acting spring is arranged between the side, back on to the first acting block, of the second acting block and the material guiding base in an abutting mode, and the material receiving groove and the material falling hole are staggered when the acting spring is in a natural stretching state. A movable material pressing rod is arranged on the machine frame in the vertical direction, and the material pressing rod is located above the material guiding base and corresponds to the position of the material falling hole. The device has the advantages of guaranteeing machining precision, improving machining efficiency and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of machinery and relates to a feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft. BACKGROUND

[0002] The crankshaft is a very important component in an engine, which bears the force transmitted by the connecting rod and converts the force into torque to drive other accessories on the engine. According to different types of engines, the crankshaft is divided into single-cylinder crankshafts and multi-cylinder crankshafts. The single-cylinder crankshaft is used in a single-cylinder engine. The single-cylinder crankshaft includes a crank pin and two cranks fixedly connected to the two ends of the crank pin. The crank includes a crank arm and a crankshaft 29 as shown in the drawing, which is fixedly connected to the crank arm and the crank pin. The crankshaft 29 is used for mounting bearings and connections. The crankshaft 29 has a fixed end 29a and a matching end 29b. The fixed end 29a is used to realize the fixed connection of the crankshaft 29 and the crank pin. The matching end 29b is provided with external threads (not shown in the drawing). Figure 9

[0003] In order to ensure the strength of the crankshaft 29, the crankshaft 29 is quenched first during processing, and then the matching end 29b of the crankshaft 29 is tempered to increase the toughness of the external threads thereon, so as to ensure that the external threads are not easy to break during use. At present, workers manually clamp the crankshaft 29 to the corresponding clamps on the tempering device for tempering. Manual feeding of the workers can ensure the clamping accuracy of the crankshaft 29 on the clamps to ensure the processing accuracy, but the efficiency is very low. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft, which solves the problem of low processing efficiency while ensuring processing accuracy.

[0005] The purpose of the present application can be achieved by the following technical solutions: ​The feeding mechanism of a crankshaft tempering device for a single-cylinder crankshaft, the tempering device comprising a frame and a heating seat fixed to the frame, characterized in that the feeding mechanism comprises a turntable arranged on the frame and a guide seat fixed to the frame, the top of the guide seat being open and the bottom of the guide seat being provided with a blanking hole, the turntable being provided with a movable material moving hand claw assembly, the turntable rotating to 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 being provided with a first action block and a second action block in the transverse direction and forming a receiving groove between the first action block and the second action block, the second action block being provided with an action spring between the second action block and the guide seat, the receiving groove being misaligned with the blanking hole when the action spring is in a natural state, the frame being provided with a blanking driving element, the blanking driving element driving the first action block to push the crankshaft above the blanking hole after the crankshaft falls into the receiving groove, and the frame being provided with a movable pressing rod in the vertical direction, the pressing rod being above the guide seat and corresponding to the position of the blanking hole.

[0006] In the initial state, the action spring is in a natural state, the receiving groove formed between the first action block and the second action block is misaligned with the blanking hole, and the turntable is in a position where the material moving hand claw assembly is below the blanking hole. After the crankshaft is introduced into the receiving groove with the fixed end facing downward, the material moving hand claw assembly is controlled to move upward and approach the blanking hole, then the blanking driving element drives the first action block to move, the first action block moves to push the crankshaft and the second action block to move and compress the action spring, the elastic force of the compressed action spring acts on the crankshaft, the first action block and the second action block clamp the crankshaft, and the crankshaft is not directly dropped out of the blanking hole under the action of its own gravity when the crankshaft is pushed above the blanking hole. Then, the pressing rod is controlled to move downward, the pressing rod abuts against the crankshaft and presses the crankshaft into the material moving hand claw assembly through the blanking hole and clamps the crankshaft. After the crankshaft is clamped by the material moving hand claw assembly, the material moving hand claw assembly moves downward first, then the turntable rotates to a position where the material moving hand claw assembly is below the heating position of the heating seat, and then the material moving hand claw assembly moves upward to send the crankshaft to the heating position of the heating seat for heating to complete tempering.

[0007] The feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft is provided with a heating seat on the frame of the tempering device, and through the setting of the rotating disc and the guide seat, the automatic feeding of the crankshaft on the tempering device can be realized to realize the automatic tempering, and the processing efficiency is greatly improved. Moreover, the crankshaft is clamped by the action block one and the action block two, and then the crankshaft is pushed into the material moving hand claw assembly through the blanking hole by the downward pressure of the pressing rod, instead of being directly dropped into the material moving hand claw assembly under the weight of the crankshaft. In this way, the clamping accuracy of the crankshaft on the material moving hand claw assembly can be ensured, and the skew phenomenon after clamping can be avoided, so that the processing accuracy during the subsequent tempering is ensured. At the same time, the existence of the action spring makes the actual flexible clamping on the crankshaft, instead of the hard clamping, so that the resistance of the pressing rod to the downward pushing of the crankshaft can be reduced, and the crankshaft can be pushed out more easily with the compressibility of the action spring, so as to protect the outer circumferential surface of the crankshaft from being damaged during the pushing out process.

[0008] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the top surface of the action block one is connected with the side surface facing the action block two, and the top surface of the action block two is connected with the side surface facing the action block one, and the guide surface one and the guide surface two are both inclined and opposite in inclination direction, and the guide surface one and the guide surface two are in inverted V shape distribution.

[0009] The guide surface one and the guide surface two are both inclined and opposite in inclination direction, and the guide surface one and the guide surface two are in inverted V shape distribution, so that the upper end of the material receiving groove formed between the action block one and the action block two is naturally outwardly expanded, which can play a guiding role to ensure that the crankshaft can be smoothly guided into the material receiving groove, and the working reliability of the automatic feeding of the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft is ensured while improving the processing efficiency.

[0010] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the frame is provided with a mounting seat capable of moving up and down, the upper end of the pressing rod is provided with an annular convex edge on the outer circumferential side, the pressing rod passes through the mounting seat and the annular convex edge abuts against the mounting seat, the mounting seat is further fixed with an abutting block, the pressing rod is provided with a mounting hole penetrating through the top surface of the pressing rod, the mounting hole is provided with a pressing spring, the upper end of the pressing spring extends out of the mounting hole and abuts against the abutting block, and the frame is provided with a pressing driving part capable of driving the mounting seat to move up and down.

[0011] The two ends of the pressure spring act on the abutting block and the pressure rod, that is, the pressure rod, the mounting seat and the abutting block are fixed together along the vertical direction in the normal state, so that when the blanking driving part pushes the acting block one and cooperates with the acting block two and the elastic force of the elastic spring to move the crankshaft to the upper side of the blanking hole, the downward movement of the mounting seat driven by the pressure driving part can make the pressure rod move downward and press on the crankshaft, so as to push the crankshaft through the blanking hole to the material moving hand claw assembly to clamp. Due to the compressibility of the pressure spring, when the pressure rod exerts downward pressure on the crankshaft, the compression of the compressed spring can also make the downward pressure more gentle, so as to ensure that the matching end of the crankshaft will not be damaged, and the quality of the product is guaranteed.

[0012] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the top of the guide seat is fixed with a guide pipe arranged vertically through a stand, and the guide pipe has a gap between its lower end and the top of the guide seat. The guide pipe is above the position of the receiving groove in the natural extension state of the elastic spring. The rack is also provided with a blocking part, which includes a blocking plate, a top block above the blocking plate, and a connecting plate fixed between the top block and the blocking plate. The blocking plate is located in the gap and blocks the lower end of the guide pipe. The top block is located on the side of the guide seat. The side of the guide pipe is provided with a socket for the insertion of the outer end of the top block. The blocking plate is provided with a gap. The rack is provided with a blocking driving part. The blocking driving part can drive the blocking part to translate horizontally so that the gap is below the guide pipe. The outer end of the top block protrudes out of the gap in the direction of translation of the blocking part, and the outer end of the top block can deform in the opposite direction of its protrusion when it is pressed.

[0013] In actual use, the upper end of the guide pipe is connected to the discharge port of the vibrating disc. A batch of crankshafts are sent into the guide pipe by the vibrating disc with their fixed ends facing downward. This increases the degree of automation. Initially, the blocking plate of the blocking part blocks the lower end of the guide pipe, and the top block of the blocking part is located outside the guide pipe. The height difference between the blocking 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 are sent into the guide pipe, the blocking part is controlled to translate so that the gap on the blocking plate is opposite to the lower end of the guide pipe, and the outer end of the top block is inserted into the guide pipe through the socket. After the gap is opposite to the guide pipe, the lower end of the guide pipe is equivalent to being opened, and the crankshaft located in the last position in the guide pipe falls into the receiving groove formed between the acting block one and the acting block two, and the outer end of the top block pushes the second last crankshaft against the inner wall of the guide pipe to ensure that it will not fall.

[0014] The outer end of the top block protrudes out of the accommodation gap of the blocking plate in the translation direction of the blocking member, and the outer end of the top block can be deformed in the opposite direction when it is pressed, which means that the outer end of the top block still blocks the lower end of the guide pipe when it passes through the insertion hole. Such a design makes the pressing of the penultimate crankshaft by the top block and the opening of the lower end of the guide pipe by the blocking plate not occur simultaneously, but the opening of the lower end of the guide pipe by the blocking plate occurs gradually after the pressing of the penultimate crankshaft by the top block. This can ensure that the penultimate crankshaft does not partially expose outside the lower end of the guide pipe when the last crankshaft falls into the receiving groove, reduces the failure rate, and ensures the reliability of the work. The specific process is as follows: after the outer end of the top block passes through the insertion hole and presses the penultimate crankshaft on the inner wall of the guide pipe, the path of the forward movement of the outer end of the top block is blocked, but the entire blocking member is still driven to move by the blocking drive member. At this time, the outer end of the top block will be deformed backward under the reaction of the inner wall of the guide pipe, and this deformation allows the blocking plate fixedly connected to the inner end of the top block by the connecting plate to continue to move forward, thereby completely opening the lower end of the guide pipe to make the last crankshaft fall out of the guide pipe.

[0015] In conventional technology, in order to ensure that the penultimate crankshaft is pressed and then the guide pipe is opened to make the last crankshaft fall, the top block and the blocking plate are independently arranged and controlled by independent drive members, i.e., the movement of the top block is controlled separately and the movement of the blocking plate is controlled separately, and the blocking plate and the top block are not integrated and controlled by only one blocking drive member.

[0016] In the above-described feeding mechanism of the crankshaft tempering device of a single-cylinder crankshaft, the top block includes a fixed block and a movable block. The fixed block has a cavity, and the inner end of the movable block is located in the cavity of the fixed block. A linkage spring is arranged in the cavity of the fixed block, and the two ends of the linkage spring abut against the inner end of the movable block and the fixed block, respectively. The inner end side of the movable block is provided with a shoulder, and the cavity of the fixed block is provided with a stop shoulder. Under the action of the linkage spring, the shoulder of the movable block abuts against the stop shoulder of the fixed block. A connecting plate is fixedly connected between the fixed block and the blocking plate, and a blocking drive member is connected to the fixed block.

[0017] In the natural state, the fixed block and the moving block are combined with the abutment of the stop shoulder and the convex shoulder under the elastic force of the linkage spring, that is, when the material blocking driving element drives the fixed block to move, the moving block will move together, thereby realizing the movement of the entire top pressing block, and 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 enables the fixed block to continue to advance, so that the material blocking plate fixedly connected with the fixed block through the connecting plate can still continue to advance under the condition that the top pressing block has been inserted into the socket to press the crankshaft, thereby ensuring that the lower end of the material guide pipe is opened only when the second last crankshaft in the material guide pipe is pressed first, so that the last crankshaft falls into the material receiving groove, thereby ensuring the reliability of the work.

[0018] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the moving direction of the material blocking element is consistent with that of the acting block, and the area of the gap is larger than the cross-sectional area of the material guide pipe. When the gap is located below the material guide pipe, the gap is also located below the pressing rod.

[0019] The moving direction of the material blocking element is consistent with that of the acting block, so the structure is simpler and there is no problem of multiple translation directions at the material guide seat. The area of the gap is set to be larger than the cross-sectional area of the material guide pipe, and when the gap is located below the material guide pipe, the gap is also located below the pressing rod, thereby ensuring that the material blocking plate does not interfere with the pressing action of the pressing rod.

[0020] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the base is fixed on the rotating disc, the material moving gripper assembly includes a lifting seat slidingly arranged on the base, a material moving three-jaw chuck fixedly connected to the top of the lifting seat, and material moving clamping jaws fixedly connected to the sliding blocks of the material moving three-jaw chuck. The inner end of each material moving clamping jaw has a circular clamping surface, and each clamping surface is concentrically arranged. A lifting driving element is fixed on the base for driving the lifting seat to move.

[0021] The base is fixed on the rotating disc, and the lifting seat of the material moving gripper assembly is slidingly arranged on the base. A lifting driving element is fixed on the base for driving the lifting seat to slide and thereby realizing the up-and-down movement of the entire material moving gripper assembly. The material moving gripper assembly further includes a material moving three-jaw chuck fixedly connected to the top of the lifting seat, and material moving clamping jaws fixedly connected to the sliding blocks of the material moving three-jaw chuck. The inner end of each material moving clamping jaw has a circular clamping surface, and each clamping surface is concentrically arranged. In this way, when the material moving three-jaw chuck is closed, the crankshaft can be firmly clamped to ensure the stability of the material moving.

[0022] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the lower discharging hand claw assembly is further arranged on the frame, the rotating disc can make the material moving hand claw assembly below the lower discharging hand claw assembly, and the lower discharging chute is further fixed on the frame, and the material moving hand claw assembly can be laterally translated on the frame to above the lower discharging chute.

[0023] After the crankshaft is completed with the heat treatment, the rotating disc is controlled to rotate to make the material moving hand claw assembly below the lower discharging hand claw assembly, and then the material moving hand claw assembly moves upward to deliver the crankshaft to the lower discharging hand claw assembly. After the crankshaft is clamped by the lower discharging hand claw assembly, the material moving hand claw assembly releases the crankshaft, and then the lower discharging hand claw assembly is laterally translated on the frame to above the lower discharging chute to release the crankshaft, and the crankshaft falls into the lower discharging chute to realize automatic discharging. Through the above arrangement, the tempering device has the functions of automatic feeding and automatic discharging, and the processing efficiency is further improved.

[0024] In the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft, the number of the material moving hand claw assemblies is three, and the three material moving hand claw assemblies are uniformly distributed in the circumferential direction.

[0025] Compared with the prior art, the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft has the following advantages: 1. On the basis that the heating seat is arranged on the frame of the tempering device, the rotating disc and the material guide seat are arranged, the crankshaft can be automatically fed on the tempering device, and the processing efficiency is greatly improved. 2. The arrangement of the acting block one, the acting block two and the acting spring makes the crankshaft be clamped by the acting block one and the acting block two, and then the crankshaft is pushed into the material moving hand claw assembly through the discharging hole by the pressing rod, so that the clamping precision of the crankshaft on the material moving hand claw assembly is ensured, and the phenomenon of skewing after clamping is avoided, and the processing precision during subsequent tempering is ensured. 3. The arrangement of the material guiding pipe makes the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft directly cooperate with the vibrating disc, the efficiency is further improved, the outer end of the material pushing block protrudes outward from the accommodation gap on the blocking plate in the translation direction of the blocking material, and the outer end of the material pushing block can deform in the opposite direction when being extruded, which means that the blocking plate still blocks the lower end of the material guiding pipe when the outer end of the material pushing block passes through the insertion hole. The arrangement makes the material pushing block press the second last crankshaft and the blocking plate gradually open the lower end of the material guiding pipe, which can ensure that the second last crankshaft does not partially expose the lower end of the material guiding pipe when the first crankshaft falls into the receiving groove, reduces the failure rate, and ensures the reliability of the work. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft.

[0027] Figure 2 is another perspective view of the feeding mechanism of the crankshaft tempering device of the single-cylinder crankshaft from another angle.

[0028] Figure 3 is a perspective view of the rotary disc.

[0029] Figure 4 is a perspective view of the guide seat.

[0030] Figure 5 is a sectional view of the guide seat.

[0031] Figure 6 is a perspective view of the blocking piece.

[0032] Figure 7 is a top view of the blocking piece.

[0033] Figure 8 is a perspective view of the guide seat.

[0034] Figure 9 is a schematic view of the crankshaft.

[0035] In the figure, 1 is the frame, 2 is the heating seat, 2a is the heating hole, 3 is the cam divider, 4 is the rotary disc, 5 is the material moving gripper assembly, 5a is the lifting seat, 5b is the material moving three-jaw chuck, 5c is the material moving gripper, 6 is the guide seat, 6a is the material falling hole, 7 is the action block one, 7a is the guide surface one, 8 is the action block two, 8a is the guide surface two, 9 is the material receiving groove, 10 is the action spring, 11 is the material falling driving member, 12 is the material pressing rod, 12a is the annular convex edge, 13 is the mounting seat, 14 is the abutting block, 15 is the material pressing spring, 16 is the material pressing driving member, 17 is the stand, 18 is the material guiding pipe, 18a is the socket, 19 is the blocking piece, 20 is the blocking plate, 20a is the clearance notch, 21 is the material pushing block, 21a is the fixed block, 21a1 is the shoulder, 21b is the movable block, 21b1 is the convex shoulder, 21c is the linkage spring, 22 is the connecting plate, 23 is the material blocking driving member, 24 is the material falling gripper assembly, 24a is the material falling sliding seat, 24b is the material falling three-jaw chuck, 25 is the material falling sliding groove, 26 is the material falling driving member, 27 is the base, 28 is the lifting driving member, 29 is the crankshaft, 29a is the fixed end, and 29b is the matching end. DETAILED DESCRIPTION

[0036] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0037] As Figure 1 ,Figure 2 and Figure 3 As shown in the figure, a feeding mechanism of a crankshaft tempering device of a single-cylinder crankshaft is provided with a rack 1, a heating seat 2 is fixed on the rack 1, a heating hole 2a is arranged on the heating seat 2, and a heating ring (not shown in the figure) is embedded in the heating hole 2a. The feeding mechanism comprises a rotating disc 4 arranged on the rack 1 and capable of rotating. Specifically, a cam divider 3 is arranged on the rack 1, the rotating disc 4 is fixedly connected to an output shaft of the cam divider 3, and the rotating disc 4 is driven to rotate relative to the rack 1 by the cam divider 3. A material moving hand claw assembly 5 capable of moving up and down is arranged on the rotating disc 4. The rotating disc 4 is fixed with a base 27, the material moving hand claw assembly 5 comprises a lifting seat 5a arranged on the base 27 in a vertical sliding manner, a material moving three-jaw chuck 5b fixedly connected to the top of the lifting seat 5a, and material moving clamping jaws 5c fixedly connected to the sliding blocks of the material moving three-jaw chuck 5b. The inner end of each material moving clamping jaw 5c is provided with a clamping surface in the form of a circular arc, and each clamping surface is arranged concentrically. A guide column for the lifting seat 5a to slide up and down is fixed on the base 27. A lifting driving member 28 is fixed on the base 27, and the lifting driving member 28 drives the lifting seat 5a to slide. Specifically, the lifting driving member 28 is a cylinder, the piston rod of the cylinder is arranged downward and fixed to the base 27, and the cylinder body of the cylinder is fixedly connected to the lifting seat 5a. When air is supplied into the cylinder to make the piston rod move downward, the piston rod remains stationary due to being fixed to the base 27, so that the cylinder body is pushed upward along with the lifting seat 5a under the action of air pressure.

[0038] Further, as shown in the figure, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the feeding mechanism further comprises a guide seat 6 fixed on the frame 1, the top of the guide seat 6 is open, and the bottom of the guide seat 6 is provided with a blanking hole 6a, the rotating of the rotating disc 4 can make the material moving gripper assembly 5 pass under the blanking hole 6a and the heating position of the heating seat 2 in turn. The guide seat 6 is provided with opposite action block one 7 and action block two 8 in the transverse direction, the action block one 7 and the action block two 8 form a receiving groove 9, the side of the action block two 8 away from the action block one 7 is abutted with the guide seat 6 and is provided with an action spring 10, the receiving groove 9 is dislocated with the blanking hole 6a when the action spring 10 is in the natural extension state, the frame 1 is fixed with a blanking driving part 11, the blanking driving part 11 can drive the action block one 7 to move. The top surface of the action block one 7 and the side surface of the action block one 7 towards the action block two 8 are provided with a guide surface one 7a, the top surface of the action block two 8 and the side surface of the action block two 8 towards the action block one 7 are provided with a guide surface two 8a, the guide surface one 7a and the guide surface two 8a are both inclined and the inclined directions are opposite, the guide surface one 7a and the guide surface two 8a are in inverted V shape distribution. Specifically, the blanking driving part 11 is a cylinder, one side of the guide seat 6 is also open, the side of the action block one 7 away from the action block two 8 extends out of the opening of the side of the guide seat 6 and is fixed with the piston rod of the cylinder. The frame 1 is provided with a pressing rod 12 in the vertical direction, the pressing rod 12 can move up and down, the pressing rod 12 is located above the guide seat 6 and corresponds to the position of the blanking hole 6a. The frame 1 is provided with a mounting seat 13 which can move up and down, the outer circumferential side of the upper end of the pressing rod 12 has an annular convex edge 12a, the pressing rod 12 passes through the mounting seat 13 and the annular convex edge 12a abuts on the mounting seat 13, the mounting seat 13 is further fixed with an abutting block 14, the pressing rod 12 is provided with a mounting hole which penetrates the top surface of the pressing rod 12, the mounting hole is provided with a pressing spring 15, the upper end of the pressing spring 15 extends out of the mounting hole and abuts on the abutting block 14. The frame 1 is fixed with a pressing driving part 16, the pressing driving part 16 drives the mounting seat 13 to move up and down. Specifically, the pressing driving part 16 is a cylinder, the mounting seat 13 is fixedly connected to the piston rod end of the cylinder.

[0039] Further, as Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the top of the material guide seat 6 is fixed with a column 17, the side of the column 17 is fixed with a material guide pipe 18, the material guide pipe 18 is arranged in vertical direction, the lower end of the material guide pipe 18 has a clearance with the top of the material guide seat 6, and the material guide pipe 18 is above the position of the material receiving groove 9 in the natural stretching state of the acting spring 10. The rack 1 is further provided with a material blocking piece 19, the material blocking piece 19 comprises a material blocking plate 20, a material pushing block 21 above the material blocking plate 20, and a connecting plate 22 fixed between the material pushing block 21 and the material blocking plate 20, the material blocking plate 20 is in the clearance and blocks the lower end of the material guide pipe 18, the material pushing block 21 is at the side of the material guide seat 6, the side of the material guide pipe 18 is provided with a socket 18a for the outer end of the material pushing block 21 to insert, the material blocking plate 20 is provided with a clearance notch 20a, the material blocking piece 19 can be transversely translated to make the clearance notch 20a below the material guide pipe 18, the outer end of the material pushing block 21 protrudes out of the clearance notch 20a in the translation direction of the material blocking piece 19, and the outer end of the material pushing block 21 can be deformed in the opposite direction of the protruding direction when being pressed. Specifically, the material pushing block 21 comprises a fixed block 21a and a movable block 21b, the fixed block 21a is provided with a cavity, the inner end of the movable block 21b is in the cavity of the fixed block 21a, the cavity of the fixed block 21a is further provided with a linkage spring 21c, the two ends of the linkage spring 21c abut against the inner end of the movable block 21b and the fixed block 21a respectively, the inner end side of the movable block 21b is provided with a shoulder 21b1, the cavity of the fixed block 21a is provided with a shoulder 21a1, the shoulder 21b1 of the movable block 21b abuts against the shoulder 21a1 of the fixed block 21a under the action of the linkage spring 21c, the connecting plate 22 is fixedly connected between the fixed block 21a and the material blocking plate 20, and the rack 1 is provided with a material blocking driving piece 23 connected with the fixed block 21a. The material blocking driving piece 23 is a cylinder, the piston rod end of the cylinder is fixedly connected with the inner end of the fixed block 21a. The outer end of the movable block 21b has a matching surface, which is a concave arc surface. In this embodiment, the moving direction of the material blocking piece 19 is consistent with the acting block 7, the area of the clearance notch 20a is larger than the sectional area of the material guide pipe 18, and the clearance notch 20a is also below the pressing rod 12 when the clearance notch 20a is below the material guide pipe 18.

[0040] Further, as Figure 1 、 Figure 2 and Figure 3As shown, the rack 1 is further provided with a discharging hand claw assembly 24, the rotating of the rotating disc 4 can make the material moving hand claw assembly 5 located below the discharging hand claw assembly 24, the rack 1 is fixed with a discharging chute 25, the discharging hand claw assembly 24 can be laterally translated to above the discharging chute 25, the rack 1 is provided with a discharging driving member 26, the discharging driving member 26 drives the discharging hand claw assembly 24 to translate. Specifically, the discharging driving member 26 is a cylinder, the discharging hand claw assembly 24 includes a discharging sliding seat 24a fixedly connected at the end of the cylinder, a discharging three-jaw chuck 24b fixedly connected at the bottom of the discharging sliding seat 24a, and discharging clamping jaws fixedly connected on the sliding blocks of the discharging three-jaw chuck 24b.

[0041] In use, the upper end of the material guiding pipe 18 is connected with the discharging port of the vibrating disc, and the vibrating disc sequentially sends batches of the crank shafts 29 with the fixed end 29a downward into the material guiding pipe 18. In the initial state, the material moving three-jaw chuck 5b of the material moving hand claw assembly 5 is located below the material falling hole 6a of the material guiding seat 6, the blocking plate 20 of the blocking member 19 blocks the lower end of the material guiding pipe 18, and the lifting block 21 of the blocking member 19 is located outside the material guiding pipe 18, and the height difference between the blocking plate 20 and the lifting block 21 is greater than the length of a single crank shaft 29 but less than the sum of the lengths of two crank shafts 29. After the crank shaft 29 is sent into the material guiding pipe 18, the lifting seat 5a of the material moving hand claw assembly 5 is driven upward by the lifting driving member 28 to make the material moving three-jaw chuck 5b close to the material falling hole 6a and be in the open state. Then, the blocking member 19 is driven to move by the blocking driving member 23, and with the movement of the blocking member 19, the relief gap 20a on the blocking plate 20 is opposite to the lower end of the material guiding pipe 18, and the outer end of the lifting block 21, i.e. the moving block 21b, is inserted into the material guiding pipe 18 through the insertion port 18a. After the relief gap 20a is opposite to the material guiding pipe 18, the lower end of the material guiding pipe 18 is equivalent to be opened, the last crank shaft 29 in the material guiding pipe 18 falls into the material receiving groove 9 formed between the acting block one 7 and the acting block two 8, and the moving block 21b inserted into the material guiding pipe 18 will top the second last crank shaft 29 on the inner wall of the material guiding pipe 18 to ensure that it will not fall.

[0042] After the last crank shaft 29 in the guide pipe 18 falls into the receiving slot 9, the blocking member 19 is driven to reset by the blocking driving member 23, the blocking plate 20 seals the lower end of the guide pipe 18 again and the ejector 21 exits the guide pipe 18. Then, the action block one 7 is driven to move towards the action block two 8 by the falling driving member 11. Since the side of the action block two 8 away from the action block one 7 is provided with the action spring 10 between the guide seat 6, the action block one 7 will push the crank shaft 29 and the action block two 8 to move together and compress the action spring 10 with the movement of the action block one 7, and the elastic force of the compressed action spring 10 will act on the crank shaft 29 through the action block two 8, thus forming the state that the action block one 7 and the action block two 8 clamp the crank shaft 29. After the crank shaft 29 is sent to the upper side of the falling hole 6a, the control pressure driving member 16 drives the mounting seat 13 to move downwards, and the mounting seat 13 moves downwards with the pressure rod 12 to press the matching end 29b of the crank shaft 29. With the continuous downward movement of the mounting seat 13, the pressure rod 12 gradually pushes the crank shaft 29 out of the falling hole 6a to the inside of the moving three-jaw chuck 5b, and then the moving three-jaw chuck 5b closes to clamp the fixed end 29a of the crank shaft 29.

[0043] Then, the lifting seat 5a of the moving hand claw assembly 5 is driven to move downwards by the lifting driving member 28, and then the rotating disc 4 is controlled to rotate to the position that the moving hand claw assembly 5 is below the heating position of the heating seat 2. Then, the lifting seat 5a of the moving hand claw assembly 5 is driven to move upwards by the lifting driving member 28, so that the matching end 29b of the crank shaft 29 extends into the heating hole 2a of the heating seat 2 for heating. After a set time, the lifting seat 5a of the moving hand claw assembly 5 is driven to move downwards by the lifting driving member 28, and then the rotating disc 4 is controlled to rotate to the position that the moving hand claw assembly 5 is below the discharging hand claw assembly 24, and then the lifting seat 5a of the moving hand claw assembly 5 is driven to move upwards by the lifting driving member 28 to send the crank shaft 29 to the inside of the discharging three-jaw chuck 24b in the discharging hand claw assembly 24. After the discharging three-jaw chuck 24b closes to clamp the crank shaft 29, the moving three-jaw chuck 5b is released through the crank shaft 29, the discharging driving member 26 drives the discharging hand claw assembly 24 to move to the upper side of the discharging chute 25, and then the discharging three-jaw chuck 24b is controlled to release the crank shaft 29, and the crank shaft 29 falls into the discharging chute 25 to realize automatic discharging.

[0044] In the embodiment, the number of the moving hand claw assemblies 5 is three, and the three moving hand claw assemblies 5 are uniformly distributed in the circumferential direction. When the first moving hand claw assembly is below the falling hole 6a, the second moving hand claw assembly 5 is below the heating position of the heating seat 2 and the third moving hand claw assembly 5 is below the discharging hand claw assembly 24.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as 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. Action blocks two (8) face away from action blocks one (7). A working spring (10) is provided between one side of the material receiving groove (9) and the guide seat (6). When the working spring (10) is in a naturally extended state, the material receiving groove (9) is misaligned with the material dropping hole (6a). A material dropping drive (11) is fixed on the frame (1). After the crank shaft (29) falls into the material receiving groove (9), the material dropping drive (11) can drive the action block (7) to push the crank shaft (29) to the top of the material dropping hole (6a). A movable pressure rod (12) is provided vertically on the frame (1). The pressure rod (12) is located above the guide seat (6) and corresponds to the position of the material dropping hole (6a).

2. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 1, characterized in that, The top surface of the first action block (7) is connected to the side facing the second action block (8) by a guide surface (7a), and the top surface of the second action block (8) is connected to the side facing the first action block (7) by a guide surface (8a). The first guide surface (7a) and the second guide surface (8a) are both inclined and in opposite directions. The first guide surface (7a) and the second guide surface (8a) are distributed in an inverted V-shape.

3. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 2, characterized in that, The frame (1) is provided with a mounting seat (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 seat (13) and the annular protrusion (12a) abuts against the mounting seat (13). Abutting block (14) is also fixed on the mounting seat (13). The pressure rod (12) is provided with 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). The frame (1) is provided with a pressure driving component (16) that can drive the mounting seat (13) to move up and down.

4. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 1, 2, or 3, characterized in that, The top of the guide seat (6) is fixed with a vertically arranged feed pipe (18) by a column (17). There is a clearance 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 naturally extended. 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 holds the feed pipe (18) in place. 18) The lower end is blocked, 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 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.

5. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 4, 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).

6. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 4, 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).

7. 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.

8. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 7, 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).

9. The feeding mechanism of the crankshaft tempering device for a single-cylinder crankshaft according to claim 8, 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.

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