CN115673840A - Automatic stub bar removing equipment and method for stepped shaft - Google Patents

Abstract

The invention relates to automatic stub bar removing equipment for a stepped shaft, which comprises a stepped shaft conveying device and a waste stub bar cutting device, wherein the stepped shaft conveying device and the waste stub bar cutting device are positioned between a cross wedge rolling equipment main body and a three-roller straightening machine, the cross wedge rolling equipment main body is connected with the stepped shaft conveying device, the stepped shaft conveying device is connected with the waste stub bar cutting device, and the waste stub bar cutting device is connected with the three-roller straightening machine. The step shaft conveying device and the waste head cutting device are matched for use, so that the waste heads of the step shafts are removed before straightening, the temperature of the step shafts is 800-850 ℃, cutting is facilitated, the automation level is high, the dependence on manual operation is low, the labor intensity of workers in the operation process is low, systematic connection of production processes is realized, and the processing efficiency is high.

Description

Automatic stub bar removing equipment and method for stepped shaft

Technical Field

The invention relates to the technical field of production of step shafts, in particular to automatic stub bar removing equipment and a stub bar removing method for a step shaft.

Background

The wedge cross rolling technology is also profiling, firstly heating the step shaft to a certain temperature by a medium frequency induction heating electric furnace, then placing the step shaft on a wedge cross rolling mill, making an upper cylindrical mould and a lower cylindrical mould which are horizontally arranged rotate in the same direction, rolling the heated step shaft between the two cylindrical moulds by rolling outwards along the axial direction to realize radial compression and axial extension forming, and because the moulds only have the function of rolling outwards, waste material heads are generated at two ends of the step shaft in the forming process.

The existing processing mode is that a step shaft with waste material heads at two ends output by cross wedge rolling is manually clamped on a three-roller straightener by fire tongs, the step shaft is straightened by the three-roller straightener, and after the straightening treatment is finished, the step shaft is transferred to an independent field and is cut off by a cutting saw held by a worker. The automatic level of the stub bar mode that goes is low, and the dependency to manual operation is strong, and workman intensity of labour is big among the operation process, and the cutting quality is unified well, and each production procedure can't accomplish systematic linking, and machining efficiency is low, and the step axle has cooled off to the room temperature when cutting, increases the cutting degree of difficulty. Except that manual cutting also has the form through mechanical means cutting waste material head at present, but the axle piece all is cutting after the cooling, can leave the burr after the cutting, needs artifical secondary to polish the processing.

The automatic stub bar removing equipment and the automatic stub bar removing method for the stepped shaft are provided by the applicant through long-time exploration, summary and careful research, finished products are manufactured and put into use in a factory at present, the effect is prominent, the production efficiency is effectively improved, and the dependence on the operation of workers is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides automatic stub bar removing equipment for a step shaft and a stub bar removing method.

The invention provides automatic stub bar removing equipment for a stepped shaft, which comprises a stepped shaft conveying device and a waste stub bar cutting device, wherein the stepped shaft conveying device and the waste stub bar cutting device are positioned between a cross wedge rolling equipment main body and a three-roller straightening machine;

the step shaft conveying device comprises a conveying table, wherein a movable placing seat for placing the step shaft is arranged on the conveying table, and the movable placing seat moves back and forth between the cross wedge rolling equipment main body and the waste head cutting device to complete conveying of the step shaft; the conveying table is provided with a correcting mechanism for pushing the step shafts to enable the positions of the step shafts received on the movable placing seat to be consistent each time, and the step shafts after position correction are conveyed to the waste head cutting device through the transferring mechanism;

the waste head cutting device comprises a fixed placing seat for placing a step shaft, the step shaft is transferred onto the fixed placing seat through a chain type manipulator, the step shaft placed on the fixed placing seat is limited through a jacking mechanism, waste heads at two ends are cut off through a cutting mechanism, and the cut off waste heads are received through a recovery mechanism and conveyed to a recovery box; the lever type picking mechanism moves the step shaft out of the fixed placing seat and sends the step shaft to the three-roller straightener;

the lever type picking mechanism comprises a supporting column positioned between the second processing table and the three-roller straightening machine, the supporting column is fixed with the ground, a rotating plate is hinged with the supporting column and positioned between two jacking cylinders, a baffle is fixedly connected to the material lifting end of the rotating plate, and the rotating plate moves out the step shaft from the fixed placing seat through rotation and automatically rolls to the three-roller straightening machine; a limiting plate for preventing the step shaft from rolling off is arranged on a frame of the three-roller straightener; the rotary cylinder is used for driving the rotating plate to rotate, two guide bulges are arranged on the rotating plate, and the two guide bulges are arranged along the extending direction of the rotating plate.

Preferably, one end of the conveying table, which is close to the cross wedge rolling equipment main body, is higher than one end of the conveying table, which is close to the scrap head cutting device, and the movable placing seat is driven by the chain transmission mechanism to move and is guided by a guide rail arranged on the conveying table; the movable placing seat is fixed with a chain of the chain transmission mechanism; two ends of the movable placing seat are respectively and fixedly connected with a bearing plate with a V-shaped groove, and a step shaft output from the cross wedge rolling equipment main body falls onto the movable placing seat and is restrained in position through the bearing plates.

Preferably, the correcting mechanism comprises a vertical rod fixedly connected to the conveying table, the rotating arm is hinged to the vertical rod, one end of the rotating arm is fixedly provided with the push plate, the other end of the rotating arm is hinged to the push rod of the correcting cylinder, and the cylinder body of the correcting cylinder is hinged to the conveying table. The swing that can realize the rocking arm under the drive of correcting the cylinder, when the step axle moved to correcting the mechanism position, the rocking arm was rotatory to promote the step axle through the push pedal, pushed the step axle to the target position through the cooperation with accepting the board, made the step axle of placing at every turn the removal place the seat on the position keep unanimous for later stage cutting position keeps unanimous.

Preferably, the transfer mechanism is a drag chain type mechanical arm which is of an existing structure, a claw of the drag chain type mechanical arm can finish back-and-forth movement and up-and-down lifting actions, and a step shaft after position correction is taken and sent to the scrap head cutting device through a claw clamp.

Preferably, in order to realize the production automation of the step shaft conveying device, a proximity switch is arranged on the conveying table and close to the main body of the cross wedge rolling equipment, the proximity switch is connected with an input end circuit of a programmable logic controller, and a motor of a chain transmission mechanism is connected with an output end circuit of the programmable logic controller; and a photoelectric switch is arranged at the position of the correction mechanism, the photoelectric switch is connected with an input end circuit of a programmable logic controller, the correction cylinder is connected with an output end circuit of the programmable logic controller, and the programmable logic controller is connected with a control cabinet circuit of the drag chain type manipulator. The model of the programmable logic controller is ohm dragon CP1H series PLC, the corresponding circuit connection parts of the proximity switch, the photoelectric switch, the motor, the correction cylinder, the drag chain type mechanical arm and the programmable logic controller are not improved and the existing connection mode is used, and the circuit connection relation is also known by the technicians in the field and is also explicitly recorded in the related patent documents, so the specific circuit connection relation is not repeated. When the material is received, the movable placing seat is close to the cross wedge rolling equipment main body, the step shaft output from the cross wedge rolling equipment main body falls onto the movable placing seat, the proximity switch receives a signal and transmits the signal to the programmable logic controller, the programmable logic controller sends an instruction to control the motor to start, and the movable placing seat carries the step shaft to move. When the step shaft moves to the position of the correction mechanism, the photoelectric switch receives a signal and transmits the signal to the programmable logic controller, the programmable logic controller sends an instruction to control the motor to pause, the movable placing seat is temporarily static, the programmable logic controller sends an instruction to control the correction cylinder to act, the rotating arm rotates to push the step shaft through the push plate and push the step shaft in place, so that the position of the step shaft placed at each time on the movable placing seat is kept consistent, and the later-stage cutting position is kept consistent. After the correction cylinder finishes acting, the programmable logic controller sends out an instruction to control the drag chain type mechanical arm to work, and the drag chain type mechanical arm takes and delivers the step shaft with the corrected position to the scrap head cutting device through the claw hand clamp. After the drag chain type mechanical arm finishes the action, the movable placing seat moves reversely to an initial material receiving position to wait for the next material receiving.

Preferably, the fixed placing seat comprises a first processing table which is horizontally arranged, a first T-shaped sliding groove is formed in the first processing table along the extending direction of the first processing table, two groups of lifting assemblies for lifting two ends of a step shaft are respectively arranged at two ends of the first processing table, each group of lifting assemblies comprises a bottom plate, a mounting hole is formed in each bottom plate, and a T-shaped bolt located in the first T-shaped sliding groove penetrates through the mounting hole and is fixed through a nut; the bottom plate can be adjusted in position through the cooperation of the first T-shaped sliding groove and the T-shaped bolt, and the corresponding lifting assembly is adjustable in position, so that the lifting mechanism is suitable for step shafts of different models. The first vertical plate is vertically and fixedly connected with the bottom plate, an arc-shaped groove for embedding a shaft shoulder of the step shaft is formed in the top surface of the first vertical plate, the second vertical plate is attached to the first vertical plate, and a V-shaped groove for embedding a shaft neck of the step shaft is formed in the top surface of the second vertical plate; the first vertical plate is provided with a vertically arranged strip hole, the second vertical plate is provided with a connecting hole, and a bolt sequentially penetrates through the connecting hole and the strip hole and is fixed through a nut. The second vertical plate can be adjusted in height by adopting a mode of installing the long strip holes, and the height fall of the V-shaped groove and the arc-shaped groove can be adjusted, so that the vertical plate is suitable for step shafts of different models. The step shaft is positioned through the matching of the V-shaped groove and the arc-shaped groove.

Preferably, a second processing table is obliquely arranged on one side of the first processing table, and the included angle between the extension line of the second processing table and the first processing table is 30 degrees; and the jacking mechanism and the cutting mechanism are both arranged on the second processing table. The second processing platform and the first processing platform form a 30-degree included angle, and correspondingly, the jacking mechanism and the cutting mechanism form a 30-degree included angle with the step shaft, so that the jacking mechanism and the cutting mechanism are favorable for jacking the step shaft tightly and reducing the cutting difficulty.

Preferably, a second T-shaped sliding groove is arranged on the second processing table along the extension direction of the second processing table; the jacking mechanism comprises two jacking cylinders, a cylinder body of each jacking cylinder is fixedly arranged on the first moving plate, a push rod of each jacking cylinder is connected with the V-shaped clamping seat through a sliding block, and the sliding block slides along a track arranged on the first moving plate; the T-shaped bolt located in the second T-shaped sliding groove penetrates through the first moving plate and is fixed through the nut, the first moving plate can be adjusted in position through the cooperation of the T-shaped bolt and the second T-shaped sliding groove, and the corresponding jacking mechanism is adjustable in position, so that the step shafts of different models are adapted.

Preferably, the cutting mechanism comprises two cutting cylinders, a cylinder body of each cutting cylinder is fixedly arranged on the second moving plate, and a push rod of each cutting cylinder is connected with the cutter; the T-shaped bolt positioned in the second T-shaped sliding groove penetrates through the second moving plate and is fixed through a nut; the second moving plate can be adjusted in position through the matching of the T-shaped bolt and the second T-shaped sliding groove, and the position of the corresponding cutting mechanism can be adjusted, so that the cutting mechanism is suitable for step shafts of different models.

In a second aspect of the invention, there is provided a method for removing stub bars by using the above apparatus, wherein the stub bars are removed before the step shaft is straightened, the temperature of the step shaft is 800-850 ℃, which is convenient for cutting, and the method specifically comprises the following cutting steps,

(1) The step shaft output from the main body of the cross wedge rolling equipment falls onto the movable placing seat, the movable placing seat carries the step shaft to move, when the step shaft moves to the position of the correcting mechanism, the rotating arm rotates to push the step shaft through the push plate, and the step shaft is pushed to the right position, so that the position of the step shaft placed each time on the movable placing seat is kept consistent;

(2) The step shafts after position correction are taken and conveyed to two groups of lifting assemblies of the scrap head cutting device through the claw hand clamps by the drag chain type mechanical arm, and after the drag chain type mechanical arm finishes acting, the movable placing seat moves reversely to an initial material receiving position;

(3) The step shaft is tightly pushed by the oblique downward thrust of the pushing mechanism, waste heads at two ends of the step shaft are cut off by means of two cutting cylinders of the cutting mechanism, the cut waste heads fall on the material receiving disc, and the waste heads rolled from the material receiving disc are conveyed to a recovery box through a chain conveyor;

(4) After cutting, both the jacking mechanism and the cutting mechanism reset, and the step shaft is relieved from limiting;

(5) The rotating cylinder drives the rotating plate to rotate, the step shaft is moved out of the fixed placing seat and automatically rolls to the three-roller straightening machine, and the two guide protrusions play a role in guiding and constraining the rolling step shaft, so that the step shaft accurately enters the three-roller straightening machine.

The invention has the beneficial effects that:

1. the material head of the step shaft is removed before the step shaft is straightened by matching the step shaft conveying device with the waste head cutting device, the temperature of the step shaft is 800-850 ℃, the cutting is convenient, the cutting difficulty is small through accurate positioning and high-temperature cutting of the shaft part, burrs cannot be left at the cutting position after the waste head is cut away, the secondary grinding process is omitted, and the cutting is completed once. The cutting process has high automation level, low dependence on manual operation, low labor intensity of workers in the operation process, systematic connection of production processes and high processing efficiency.

2. The swing that can realize the rocking arm under the drive of correcting the cylinder, when the step axle moved to correcting the mechanism position, the rocking arm was rotatory to promote the step axle through the push pedal, pushed the step axle to the target position through the cooperation with accepting the board, made the step axle of placing at every turn the removal place the seat on the position keep unanimous for later stage cutting position keeps unanimous.

Drawings

FIG. 1 is a schematic top view of the overall structure of the present invention;

FIG. 2 is a front view of the movable seat of the present invention;

FIG. 3 is a schematic view of a front view of the correcting mechanism of the present invention;

FIG. 4 is a schematic view of a connection structure of a first vertical plate and a second vertical plate according to the present invention;

FIG. 5 is a schematic view illustrating the working state of the step shaft when the step shaft is not lifted;

FIG. 6 is a schematic view of the working state of the step shaft of the present invention when it is picked up;

FIG. 7 is an enlarged view of a portion A of FIG. 1;

FIG. 8 is a schematic view of the step shaft conveying apparatus according to the present invention;

FIG. 9 is a schematic view of a scrap head cutting apparatus according to the present invention;

FIG. 10 is a pictorial view of the waste stubs at the two ends of the step shaft in an uncut state in accordance with the present invention;

FIG. 11 is a view of the stepped shaft with two ends of the scrap pieces removed;

FIG. 12 is an end view of the stepped shaft of the present invention with the scrap head removed;

shown in the figure:

1. the wedge cross rolling equipment comprises a wedge cross rolling equipment main body, 2, a conveying table, 3, a movable placing seat, 4, a step shaft, 5, a proximity switch, 6, a bearing plate, 7, a correction mechanism, 8, a drag chain type manipulator, 9, a photoelectric switch, 10, a chain transmission mechanism, 11, a guide rail, 12, a chain conveyor, 13, a first processing table, 14, a second processing table, 15, a rotating plate, 16, a support column, 17, a guide protrusion, 18, a three-roller straightener, 19, a limiting plate, 20, a baffle plate, 21, a vertical rod, 22, a correction cylinder, 23, a rotating arm, 24, a pushing plate, 25, a first vertical plate, 26, a second vertical plate, 27, a long strip hole, 28, an arc-shaped groove, 29, a V-shaped groove, 30, a rotating cylinder, 31, a bottom plate, 32, a first T-shaped chute, 33, a material receiving plate, 34, a second moving plate, 35, a cutting cylinder, 36, a cutter, 37, a first moving plate, a pushing cylinder, 39, a sliding block, 40, a V-shaped clamping seat, 41 and a second T-shaped chute.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 to 12, the present invention includes a step shaft conveying device and a scrap head cutting device between a cross wedge rolling apparatus main body 1 and a three-roll leveler 18, the cross wedge rolling apparatus main body 1 is engaged with the step shaft conveying device, the step shaft conveying device is engaged with the scrap head cutting device, and the scrap head cutting device is engaged with the three-roll leveler 18. The cross wedge rolling equipment main body 1 and the three-roll straightening machine 18 are both of the existing structure.

The step shaft conveying device comprises a conveying table 2, a movable placing seat 3 used for placing a step shaft 4 is arranged on the conveying table 2, and the movable placing seat 3 moves back and forth between the cross wedge rolling equipment main body 1 and the scrap head cutting device to complete conveying of the step shaft. The conveying table 2 is provided with a correcting mechanism 7 for pushing the step shafts to keep the positions of the step shafts received on the movable placing seat 3 at each time consistent, and the step shafts 4 with the corrected positions are conveyed to the scrap head cutting device through the transfer mechanism.

One end of the conveying platform 2 close to the cross wedge rolling equipment main body 1 is higher than one end of the conveying platform 2 close to the scrap head cutting device, and the movable placing seat 3 is driven by the chain transmission mechanism 10 to move and is guided by the guide rail 11 arranged on the conveying platform 2. The chain transmission mechanism 10 is of an existing structure, power is provided by a motor to realize chain transmission, and the movable placing seat 3 is fixed with a chain of the chain transmission mechanism 10. As shown in fig. 2, a receiving plate 6 having a V-shaped groove is fixedly attached to each end of the movable mounting base 3, and the step shaft output from the cross wedge rolling apparatus main body 1 is dropped onto the movable mounting base 3 and the position is restricted by the receiving plate 6.

As shown in fig. 3, the correcting mechanism 7 includes an upright 21 fixed on the conveying table 2, a rotating arm 23 is hinged with the upright 21, one end of the rotating arm 23 is fixed with a push plate 24, the other end of the rotating arm 23 is hinged with a push rod of a correcting cylinder 22, and a cylinder body of the correcting cylinder 22 is hinged with the conveying table 2. The swing of the rotating arm 23 can be realized under the driving of the correcting cylinder 22, when the step shaft moves to the position of the correcting mechanism 7, the rotating arm 23 rotates to push the step shaft through the push plate 24, and the step shaft is pushed in place through the matching with the bearing plate 6, so that the position of the step shaft placed at each time on the movable placing seat 3 is kept consistent, and the later cutting position is kept consistent.

The transfer mechanism is a drag chain type mechanical arm 8, the drag chain type mechanical arm 8 is of an existing structure, a claw of the drag chain type mechanical arm 8 can complete back-and-forth movement and up-and-down lifting actions, and a step shaft after position correction is taken and sent to the scrap head cutting device through a claw clamp.

In order to realize the production automation of the step shaft conveying device, a proximity switch 5 is arranged on the conveying table 2 at a position close to the cross wedge rolling equipment main body 1, the proximity switch 5 is connected with an input end circuit of a programmable logic controller, and a motor of a chain transmission mechanism 10 is connected with an output end circuit of the programmable logic controller. The photoelectric switch 9 is arranged at the position of the correcting mechanism 7, the photoelectric switch 9 is connected with the input end circuit of the programmable logic controller, and the correcting cylinder 22 is connected with the output end circuit of the programmable logic controller. The programmable logic controller is connected with a control cabinet circuit of the drag chain type manipulator 8. The model of the programmable logic controller is ohm dragon CP1H series PLC, the corresponding circuit connection parts of the proximity switch 5, the photoelectric switch 9, the motor, the correction cylinder 22, the drag chain type manipulator 8 and the programmable logic controller are not improved and the existing connection mode is used, and the circuit connection relation is also known by the technicians in the field and is explicitly recorded in the related patent documents, so the specific circuit connection relation is not described again. When receiving materials, the movable placing seat 3 is close to the cross wedge rolling equipment main body 1, the step shaft output from the cross wedge rolling equipment main body 1 falls on the movable placing seat 3, the proximity switch 5 receives signals and transmits the signals to the programmable logic controller, the programmable logic controller sends out instructions to control the motor to start, and the movable placing seat 3 carries the step shaft to move. When the step shaft moves to the position of the correction mechanism 7, the photoelectric switch 9 receives a signal and transmits the signal to the programmable logic controller, the programmable logic controller sends a command to control the motor to pause, the movable placing seat 3 is temporarily static, the programmable logic controller sends a command to control the correction cylinder 22 to act, the rotating arm 23 rotates to push the step shaft through the push plate 24, the step shaft is pushed in place, the position of the step shaft placed each time on the movable placing seat 3 is kept consistent, and the later-stage cutting position is kept consistent. After the correcting cylinder 22 finishes acting, the programmable logic controller sends an instruction to control the work of the drag chain type mechanical arm 8, and the drag chain type mechanical arm 8 takes and sends the step shaft with the corrected position to the scrap head cutting device through the claw clamp. After the action of the drag chain type mechanical arm 8 is finished, the movable placing seat 3 reversely moves to the initial material receiving position to wait for the next material receiving.

First cutting device of waste is including the fixed seat of laying that is used for placing the step axle, and the step axle shifts to the fixed seat of laying through chain manipulator on, lays in the fixed step axle of laying on the seat and puts the mechanism spacing and cut off the waste material head at both ends through cutting mechanism in top, and the waste material head of cutting off accepts and carries to the collection box through retrieving the mechanism. The lever-type pick-out mechanism moves the step shaft out of the fixed mounting seat and delivers it to the three-roll straightener 18.

As shown in fig. 1 and 7, the fixed placing seat comprises a first processing table 13 horizontally arranged, a first T-shaped sliding groove 32 is formed in the first processing table 13 along the extending direction of the first processing table, two groups of lifting assemblies used for lifting two ends of a step shaft are arranged at two ends of the first processing table 13 respectively, each group of lifting assemblies comprises a bottom plate 31, mounting holes are formed in the bottom plate 31, T-shaped bolts located in the first T-shaped sliding grooves 32 penetrate through the mounting holes and are fixed through nuts, the bottom plate 31 can be adjusted in position through the matching of the first T-shaped sliding grooves 32 and the T-shaped bolts, and the corresponding lifting assemblies can be adjusted in position so as to adapt to the step shafts of different models. The first vertical plate 25 is vertically and fixedly connected with the bottom plate 31, as shown in fig. 4, an arc-shaped groove 28 for embedding a shaft shoulder of the step shaft is arranged on the top surface of the first vertical plate 25, the second vertical plate 26 abuts against the first vertical plate 25, and a V-shaped groove 29 for embedding a shaft neck of the step shaft is arranged on the top surface of the second vertical plate 26. The vertical strip-shaped holes 27 are formed in the first vertical plate 25, the connecting holes are formed in the second vertical plate 26, bolts sequentially penetrate through the connecting holes and the strip-shaped holes 27 and are fixed through nuts, the mode that the strip-shaped holes 27 are installed is adopted, the height of the second vertical plate 26 can be adjusted, and the height difference between the V-shaped grooves 29 and the arc-shaped grooves 28 is adjustable, so that the vertical strip-shaped connecting structure is suitable for step shafts of different models. The stepped shaft is positioned by the cooperation of the "V" shaped groove 29 and the arc shaped groove 28.

A second processing table 14 is obliquely disposed on one side of the first processing table 13, and an angle between an extension line of the second processing table 14 and the first processing table 13 is 30 degrees. The jacking mechanism and the cutting mechanism are both mounted on the second processing table 14. The second processing table 14 and the first processing table 13 form an included angle of 30 degrees, and correspondingly, the jacking mechanism and the cutting mechanism form an included angle of 30 degrees with the step shaft, so that the jacking mechanism and the cutting mechanism are beneficial to jacking the step shaft and reducing the cutting difficulty.

As shown in fig. 7, a second T-shaped chute 41 is provided in the second processing table 14 along the extending direction thereof. The jacking mechanism comprises two jacking cylinders 38, a cylinder body of each jacking cylinder 38 is fixedly mounted on the first moving plate 37, a push rod of each jacking cylinder 38 is connected with the V-shaped clamping seat 40 through a sliding block 39, the sliding block 39 slides along a track arranged on the first moving plate 37, and the step shaft is limited through the V-shaped clamping seat 40. The T-shaped bolt in the second T-shaped sliding groove 41 penetrates through the first moving plate 37 and is fixed through the nut, the first moving plate 37 can be adjusted in position through the matching of the T-shaped bolt and the second T-shaped sliding groove 41, and the corresponding jacking mechanism can be adjusted in position, so that the device is suitable for step shafts of different models.

The cutting mechanism comprises two cutting air cylinders 35, the cylinder body of each cutting air cylinder 35 is fixedly mounted on the second moving plate 34, and the push rod of each cutting air cylinder 35 is connected with the cutter 36. The T-shaped bolt in the second T-shaped sliding groove 41 passes through the second moving plate 34 and is fixed by a nut, the second moving plate 34 can be adjusted in position by the cooperation of the T-shaped bolt and the second T-shaped sliding groove 41, and the position of the corresponding cutting mechanism can be adjusted, so that the cutting mechanism is adapted to step shafts of different models.

As shown in fig. 5 and 6, the lever type picking mechanism comprises a supporting column 16 positioned between the second processing table 14 and the three-roller straightener 18, the supporting column 16 is fixed with the ground, a rotating plate 15 is hinged with the supporting column 16, the rotating plate 15 is positioned between two jacking cylinders 38, a baffle 20 is fixedly connected to the lifting end of the rotating plate 15, and the rotating plate 15 moves the step shaft out of the fixed placing seat through rotation and automatically rolls to the three-roller straightener 18. A limit plate 19 for preventing the step shaft from rolling off is mounted on the frame of the three-roll straightener 18. The rotary cylinder 30 is used for driving the rotating plate 15 to rotate, a cylinder body of the rotary cylinder 30 is hinged with the ground, and a push rod of the rotary cylinder 30 is hinged with a blanking section of the rotating plate 15. Two guide protrusions 17 are arranged on the rotating plate 15 and arranged along the extending direction of the rotating plate 15, and the two guide protrusions play a role in guiding and restraining a rolling step shaft.

The recovery mechanism comprises a material receiving disc 33 which is fixedly connected with each second vertical plate 26 and is obliquely arranged, and waste material heads rolled down from the material receiving disc 33 are conveyed to the recovery box through the chain conveyor 12.

The method for removing the stub bar by using the equipment has the advantages that the stub bar is removed before the step shaft is straightened, the temperature of the step shaft is 800-850 ℃, the cutting is convenient, the method specifically comprises the following cutting steps,

(1) The step shaft output from the cross wedge rolling equipment main body 1 falls on the movable placing seat 3, the movable placing seat 3 carries the step shaft to move, when the step shaft moves to the position of the correcting mechanism 7, the rotating arm 23 rotates to push the step shaft through the push plate 24, and the step shaft is pushed to the position, so that the position of the step shaft placed at each time on the movable placing seat 3 is kept consistent;

(2) The step shafts with corrected positions are taken and delivered to two groups of lifting assemblies of the waste head cutting device through the claw hand clamps by the drag chain type mechanical arm 8, and after the drag chain type mechanical arm 8 finishes acting, the movable placing seat 3 moves reversely to an initial material receiving position;

(3) The step shaft is tightly pushed by the oblique downward thrust of the pushing mechanism, waste heads at two ends of the step shaft are cut off by two cutting cylinders 35 of the cutting mechanism, the cut waste heads fall on the material receiving disc 33, and the waste heads rolled from the material receiving disc 33 are conveyed to a recovery box through the chain conveyor 12;

(4) After cutting, both the jacking mechanism and the cutting mechanism reset, and the step shaft is relieved from limiting;

(5) The rotating cylinder 30 drives the rotating plate 15 to rotate, the step shaft is moved out of the fixed placing seat and automatically rolls to the three-roller straightening machine 18, and the two guide protrusions play a role in guiding and constraining the rolling step shaft, so that the step shaft accurately enters the three-roller straightening machine 18.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims (10)

1. Automatic stub bar equipment of going of step axle, its characterized in that: the device comprises a step shaft conveying device and a waste head cutting device which are positioned between a cross wedge rolling equipment main body and a three-roller straightener, wherein the cross wedge rolling equipment main body is connected with the step shaft conveying device, the step shaft conveying device is connected with the waste head cutting device, and the waste head cutting device is connected with the three-roller straightener;

the step shaft conveying device comprises a conveying table, wherein a movable placing seat for placing the step shaft is arranged on the conveying table, and the movable placing seat moves back and forth between the cross wedge rolling equipment main body and the waste head cutting device to complete conveying of the step shaft; the conveying table is provided with a correcting mechanism for pushing the step shafts to keep the positions of the step shafts which are received on the movable placing seat at each time consistent, and the step shafts with the corrected positions are conveyed to the waste head cutting device through the transfer mechanism;

the waste head cutting device comprises a fixed placing seat for placing a step shaft, the step shaft is transferred onto the fixed placing seat through a chain type manipulator, the step shaft placed on the fixed placing seat is limited through a jacking mechanism, waste heads at two ends are cut off through a cutting mechanism, and the cut off waste heads are received through a recovery mechanism and conveyed to a recovery box; the lever type picking mechanism moves the step shaft out of the fixed placing seat and sends the step shaft to the three-roller straightener;

the lever type picking mechanism comprises a supporting column positioned between the second processing table and the three-roller straightening machine, the supporting column is fixed with the ground, a rotating plate is hinged with the supporting column and positioned between two jacking cylinders, a baffle is fixedly connected to the material lifting end of the rotating plate, and the rotating plate moves out the step shaft from the fixed placing seat through rotation and automatically rolls to the three-roller straightening machine; a limiting plate for preventing the step shaft from rolling off is arranged on a frame of the three-roller straightener; the rotary cylinder is used for driving the rotating plate to rotate, two guide bulges are arranged on the rotating plate, and the two guide bulges are arranged along the extending direction of the rotating plate.

2. The automatic stub bar equipment that goes of step axle of claim 1, characterized in that: one end of the conveying table, which is close to the cross wedge rolling equipment main body, is higher than one end of the conveying table, which is close to the scrap head cutting device, and the movable placing seat is driven by the chain transmission mechanism to move and is guided by a guide rail arranged on the conveying table; the movable placing seat is fixed with a chain of the chain transmission mechanism; two ends of the movable placing seat are respectively and fixedly connected with a bearing plate with a V-shaped groove.

3. The automatic stub bar removing device for the stepped shaft according to claim 2, wherein: the correcting mechanism comprises a vertical rod fixedly connected to the conveying table, a rotating arm is hinged to the vertical rod, a push plate is fixed to one end of the rotating arm, the other end of the rotating arm is hinged to a push rod of a correcting cylinder, and a cylinder body of the correcting cylinder is hinged to the conveying table.

4. The automatic stub bar removing device for the stepped shaft according to claim 3, wherein: the transfer mechanism is a drag chain type mechanical arm.

5. The automatic stub bar equipment that goes of step axle of claim 4, characterized in that: a proximity switch is arranged on the conveying table and close to the cross wedge rolling equipment main body, the proximity switch is connected with an input end circuit of the programmable logic controller, and a motor of the chain transmission mechanism is connected with an output end circuit of the programmable logic controller; and a photoelectric switch is arranged at the position of the correction mechanism, the photoelectric switch is connected with an input end circuit of a programmable logic controller, the correction cylinder is connected with an output end circuit of the programmable logic controller, and the programmable logic controller is connected with a control cabinet circuit of the drag chain type manipulator.

6. The automatic stub bar equipment that goes of step axle of claim 1, characterized in that: the fixed placing seat comprises a first processing table which is horizontally arranged, a first T-shaped sliding groove is formed in the first processing table along the extending direction of the first processing table, two groups of lifting assemblies for lifting two ends of a step shaft are respectively arranged at two ends of the first processing table, each group of lifting assemblies comprises a bottom plate, a mounting hole is formed in each bottom plate, and a T-shaped bolt located in the first T-shaped sliding groove penetrates through the mounting hole and is fixed through a nut; the first vertical plate is vertically and fixedly connected with the bottom plate, an arc-shaped groove for embedding a shaft shoulder of the step shaft is formed in the top surface of the first vertical plate, the second vertical plate is attached to the first vertical plate, and a V-shaped groove for embedding a shaft neck of the step shaft is formed in the top surface of the second vertical plate; the first vertical plate is provided with a vertically arranged strip hole, the second vertical plate is provided with a connecting hole, and a bolt sequentially penetrates through the connecting hole and the strip hole and is fixed through a nut.

7. The automatic stub bar removing device for the stepped shaft according to claim 6, wherein: a second processing table which is obliquely arranged is arranged on one side of the first processing table, and the included angle between the extension line of the second processing table and the first processing table is 30 degrees; and the jacking mechanism and the cutting mechanism are both arranged on the second processing table.

8. The automatic stub bar equipment that goes of step axle of claim 7, characterized in that: a second T-shaped sliding groove is arranged on the second processing table along the extension direction of the second processing table; the jacking mechanism comprises two jacking cylinders, a cylinder body of each jacking cylinder is fixedly arranged on the first moving plate, a push rod of each jacking cylinder is connected with the V-shaped clamping seat through a sliding block, and the sliding block slides along a track arranged on the first moving plate; and the T-shaped bolt positioned in the second T-shaped sliding groove penetrates through the first moving plate and is fixed through a nut.

9. The automatic stub bar removing device for stepped shafts according to claim 8, wherein: the cutting mechanism comprises two cutting cylinders, a cylinder body of each cutting cylinder is fixedly arranged on the second moving plate, and a push rod of each cutting cylinder is connected with the cutter; and the T-shaped bolt positioned in the second T-shaped sliding groove penetrates through the second moving plate and is fixed through a nut.

10. Method for stub-bar removal with an apparatus according to any one of claims 1 to 9, characterized in that the step shaft is stub-bar removed before straightening, when the step shaft temperature is 800 to 850 ℃; the method comprises the following specific steps:

(1) The step shaft output from the main body of the cross wedge rolling equipment falls onto the movable placing seat, the movable placing seat carries the step shaft to move, when the step shaft moves to the position of the correction mechanism, the rotating arm rotates to push the step shaft through the push plate, and the step shaft is pushed in place, so that the position of the step shaft placed each time on the movable placing seat is kept consistent;

(2) The step shafts after position correction are taken and delivered to two groups of lifting assemblies of the waste head cutting device through the claw hand clamps by the drag chain type mechanical arm, and after the drag chain type mechanical arm finishes acting, the placing seat is moved to the initial material receiving position in a reverse direction;

(3) The step shaft is tightly pushed by the oblique downward thrust of the pushing mechanism, waste heads at two ends of the step shaft are cut off by means of two cutting cylinders of the cutting mechanism, the cut waste heads fall on the material receiving disc, and the waste heads rolled from the material receiving disc are conveyed to a recovery box through a chain conveyor;

(4) After cutting, both the jacking mechanism and the cutting mechanism reset, and the step shaft is relieved from limiting;

(5) The rotating cylinder drives the rotating plate to rotate, the step shaft is moved out of the fixed placing seat and automatically rolls to the three-roller straightener, and the two guide protrusions play a role in guiding and restraining the rolling step shaft, so that the step shaft accurately enters the three-roller straightener.

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