A blank heating unit in an automated production line for ring forgings

Abstract

The invention discloses a blank making heating unit in an automated production line for ring forgings, comprising: a bar stepping feeding device, a sawing machine input roller, a numerically controlled sawing machine, a sawing machine output roller, a blank turning and conveying device, a blank transfer mechanism, a blank transfer and flipping device, a rotary heating furnace, and a feeding manipulator. The bar stepping feeding device can feed the bar to the sawing machine input roller, the sawing machine input roller can transfer the bar to the numerically controlled sawing machine, the sawing machine output roller can transfer the blank to the blank turning and conveying device, the blank turning and conveying device can transfer the blank to the blank transfer mechanism, the blank transfer mechanism can transfer the blank to the blank transfer and flipping device, the blank transfer and flipping device can transfer the blank to the front of the heating furnace and flip the blank, and the feeding manipulator can transfer the blank to the heating furnace. The blank making heating unit can automate bar feeding, bar cutting, blank transfer, and blank heating, so that the production efficiency of ring forgings can be greatly improved.

Description

Technical Field

[0001] The invention relates to the field of ring forging production equipment, and in particular to a blank making heating unit in an automatic production line of ring forgings. Background Art

[0002] In order to improve the production efficiency of ring forgings, it is urgent to design an automatic production line for ring forgings that can automatically produce ring forgings. The blanks required for ring forging production are obtained by cutting bars. In the conventional ring forging production process, workers use saw blades to cut bars to obtain blanks, and then use forklifts to transport the blanks to the heating furnace. Then the blanks need to be manually turned over and stood up, and then the loading robot grabs the blanks and puts them into the heating furnace for heating. The above process requires manual operation in many places, so it will greatly slow down the production rhythm and greatly reduce the production efficiency of ring forgings. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a blank making heating unit in an automatic production line of ring forgings which can realize automatic bar loading, bar cutting, blank transfer and blank heating.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a blank making heating unit in an automated production line of ring forgings, characterized in that it includes: a bar stepping feeding device, a sawing machine input roller, a CNC sawing machine, a sawing machine output roller, a blank turning and conveying device, a blank transfer mechanism, a blank transfer and flipping device, a rotary heating furnace, and a feeding manipulator. The bar stepping feeding device can feed the bar onto the sawing machine input roller, the sawing machine input roller can convey the bar to the CNC sawing machine for cutting to obtain the required blank, and the sawing machine output roller can transfer the cut The obtained billet is conveyed to the billet steering conveying device, and the billet steering conveying device can convey the billet to the billet transfer mechanism after rotating and steering the billet. The billet transfer mechanism can convey the billet to the billet transfer and flipping device. The billet transfer and flipping device can convey the billet to the heating loading position between the rotary heating furnace and the loading robot, and can flip the billet so that the billet can stand up. The loading robot can grab the billet standing up on the heating loading position, and the loading robot can send the grabbed billet into the rotary heating furnace for heating.

[0005] Furthermore, in the aforementioned blank making heating unit in the ring forging automated production line, the structure of the bar step feeding device comprises: a frame, on which are arranged a plurality of bar temporary storage seats equidistantly arranged along the front-to-back direction, the bar can be placed on each bar temporary storage seat in a left-right direction, a bar transfer rack, a lifting drive mechanism and a sliding drive mechanism are also arranged on the frame, the bar transfer rack can be installed on the lifting drive mechanism so as to slide back and forth, the lifting drive mechanism can drive the bar transfer rack to move up and down, the sliding drive mechanism can drive the bar transfer rack to slide back and forth on the lifting drive mechanism, a transfer positioning seat corresponding to each bar temporary storage seat is arranged on the bar transfer rack, each transfer positioning seat is equidistantly arranged along the front-to-back direction, the front-to-back distance between each adjacent bar temporary storage seat and the front-to-back distance between each adjacent transfer positioning seat are both S, and the bar transfer rack can be lower than S after moving downward driven by the lifting drive mechanism. The rod transfer rack is driven by the lifting drive mechanism to move upward, and the rod transfer rack can lift the rods placed on the rod temporary storage seats and position them on the transfer positioning seats respectively. Then, after the rod transfer rack slides forward under the drive of the sliding drive mechanism, the rod transfer rack can move each rod forward a distance S. Then, after the rod transfer rack moves downward under the drive of the lifting drive mechanism, the rod transfer rack can pass through the sawing machine input roller table and place the front bar on the sawing machine input roller table, and the other rods can be placed on the rod temporary storage seats below them respectively. At this time, the last rod temporary storage seat will be vacated so that new rods can be placed.

[0006] Furthermore, the aforementioned blank making heating unit in the automated production line of ring forgings, wherein: the structure of the lifting drive mechanism includes: two lifting units arranged side by side at intervals on the left and right, the structure of each lifting unit includes: several cranks, transmission rods, and lifting cylinders arranged at intervals along the front and rear directions, the last crank arranged in each crank is a large crank, and the remaining cranks are small cranks, the structure of each crank includes: an upper arm and a lower arm, the rear end of the upper arm is connected to the upper end of the lower arm, and a lifting roller is arranged on the front end of the upper arm; each crank is hinged to the frame so as to be able to swing back and forth, and the hinge point of the crank and the frame is located at the connection between the upper arm and the lower arm, the lower end of the lower arm of each small crank and the middle part of the lower arm of the large crank are hinged to the transmission rod, so that each crank can be linked through the transmission rod to lift and lower. The cylinder is located behind the large crank, and the cylinder body and piston rod of the lifting cylinder are hinged one-to-one with the frame and the lower end of the lower arm of the large crank. After the piston rod of the lifting cylinder is extended and retracted, it can drive the large crank to swing back and forth. After the large crank swings, it can swing back and forth with other small cranks through the transmission rod; a synchronization shaft is arranged between the two large cranks in the two lifting units, and the two large cranks are respectively installed on the two ends of the synchronization shaft, so that the two large cranks can swing synchronously, and the bar transfer frame is supported by each lifting roller in the two lifting units and can slide back and forth on the lifting rollers, and each lifting roller will move up and down as each crank swings back and forth, thereby driving the bar transfer frame to move up and down, and a transfer frame limiting mechanism for limiting the left and right position of the bar transfer frame is arranged between each lifting roller and the bar transfer frame.

[0007] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, the structure of the transfer rack limiting mechanism is as follows: an annular groove arranged around the lifting roller is provided on the wheel surface of each lifting roller, and a front-to-back limiting rail is provided on the lower surface of the left and right sides of the bar material transfer rack, respectively, and the two limiting rails are respectively inserted into the annular grooves of each lifting roller in the lifting unit on that side.

[0008] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, the sliding drive mechanism is a push-pull cylinder, the cylinder body and piston rod of the push-pull cylinder are hinged to the frame and the bar transfer rack one-to-one respectively, and the piston rod of the push-pull cylinder can drive the bar transfer rack to slide forward and backward after being extended and retracted.

[0009] Furthermore, the aforementioned blank making heating unit in the automated production line for ring forgings, wherein: the structure of the bar transfer frame includes: two transfer beams running forward and backward and arranged side by side at intervals, the front end, middle part and rear end of the two transfer beams are respectively connected and fixed by a cross beam; the lifting roller in the left lifting unit is supported under the left transfer beam, and the lifting roller in the right lifting unit is supported under the right transfer beam; the structure of the transfer positioning seat includes: two positioning platforms arranged side by side at intervals, a V-shaped groove for positioning the bar is arranged on the top of the positioning platform, and the two positioning platforms are respectively arranged on the two transfer beams.

[0010] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, the structure of each bar storage seat includes: two load-bearing columns arranged side by side and spaced apart on the left and right, and a V-shaped groove is provided on the top of the load-bearing column for positioning the bar; the bar transfer rack is located between the two load-bearing columns of each bar storage seat.

[0011] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, a sensor for sensing the bars is provided on each bar storage seat, and the last bar storage seat uses a mechanical transmission mechanism to trigger the sensor, and the structure of the mechanical transmission mechanism includes: a rocker arm, the middle part of which is hinged to the bar storage seat, a heavy hammer is fixed on the lower end of the rocker arm, a photoelectric sensor is provided below the heavy hammer, and a support column is provided on the bar storage seat for the heavy hammer to abut against so that the heavy hammer cannot continue to swing downward, when no bars are placed on the bar storage seat, the heavy hammer will swing downward to a position abutting against the support column, and the photoelectric sensor will be triggered by the heavy hammer; when bars are placed on the bar storage seat, the bars will be pressed on the upper end of the rocker arm, and the heavy hammer will swing upward to a position that does not trigger the photoelectric sensor.

[0012] Furthermore, in the aforementioned blank making heating unit in the ring forging automatic production line, the structure of the blank turning and conveying device includes: a base, a vertical rotating shaft is installed on the base through a bearing, a stand is arranged above the base, the middle part of the stand is fixed to the top of the rotating shaft, so that the stand can rotate horizontally on the base through the rotating shaft, a separately driven transition roller connected to the sawing machine output roller is installed on the stand, the sawing machine output roller can convey the blank to the transition roller, and a rotating drive mechanism is arranged between the stand and the base, and the rotating drive mechanism can drive the stand with the transition roller The roller is rotated horizontally by X degrees in the desired direction, so that the transition roller can be connected with the blank transfer mechanism, so that the transition roller can transport the blank to the blank transfer mechanism. A blocking frame is arranged opposite to the output end of the transition roller, and a blocking column and a pushing mechanism are arranged on the blocking frame. When the transition roller is not rotating, the blank transported by the transition roller can stop moving by colliding with the blocking column, and the pushing mechanism can push the stopped blank through the pushing rod thereon, so that the blank can retreat on the transition roller and stay away from the blocking column, so that the blank will not collide with the blocking column when the transition roller rotates.

[0013] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, there is also a safety baffle which does not hinder the rotation of the transition roller and the blank. After the transition roller rotates horizontally X degrees in the desired direction, the input end of the transition roller can be exactly opposite to the safety baffle. At this time, the safety baffle can prevent the blank from falling from the input end of the transition roller by blocking at the input end of the transition roller.

[0014] Furthermore, the aforementioned blank making heating unit in the automated production line of ring forgings, wherein: the structure of the rotary drive mechanism is: a large gear mounted on the outside of the rotating shaft is fixed on the lower surface of the table, there is a gap between the large gear and the rotating shaft, and a small gear driven to rotate by a servo motor is installed on the base, the small gear and the large gear are meshed, so that the table and the transition roller can rotate horizontally X degrees in the desired direction under the drive of the servo motor.

[0015] Furthermore, in the aforementioned blank making heating unit in the ring forging automated production line, a plurality of supporting rollers arranged around a rotating axis are provided on the lower surface of the frame, and the base can support the frame through the supporting rollers.

[0016] Furthermore, in the aforementioned blank making heating unit in the ring forging automatic production line, a circular track is laid on the base, and each supporting roller rolls on the circular track.

[0017] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, a plurality of protective brackets are arranged on both sides of the transition roller and are arranged at intervals along the transition roller, and the protective brackets on both sides can limit the blank, thereby preventing the blank from rolling off the side of the transition roller.

[0018] Furthermore, in the aforementioned blank making heating unit in the ring forging automated production line, the pushing mechanism is an oil cylinder or an electric cylinder.

[0019] Furthermore, the aforementioned blank making heating unit in the automated production line of ring forgings, wherein: the structure of the blank transferring and turning device includes: a transfer trolley, a trolley track is arranged below the transfer trolley, the transfer trolley is installed on the trolley track, the transfer trolley can translate along the trolley track, and a trolley driving mechanism for driving the transfer trolley to translate along the trolley track is also arranged, a turning shaft is arranged on the transfer trolley, the turning shaft is rotatably installed on the transfer trolley through two bearings, a turning table is fixed on the turning shaft, and a turning reducer and a turning motor are also arranged on the transfer trolley, the turning motor can drive the turning shaft to rotate through the turning reducer, thereby driving the turning table to flip 90 degrees. A separately driven horizontally arranged transfer roller and a support seat are installed on the turning table. The support seat is located opposite to the output end of the transfer roller for the blank to rest against. The transfer trolley is driven by the trolley driving mechanism to translate toward one end of the trolley track and can move the transfer roller belt to a position where it can connect with the blank transfer mechanism, so that the blank transfer mechanism can transport the blank to the transfer roller. Then, the transfer trolley is driven by the trolley driving mechanism to translate toward the other end of the trolley track and can move the transfer roller and the blank belt to the heating loading position between the loading robot and the rotary heating furnace. After the turning table is flipped 90 degrees under the drive of the flipping motor, the blank on the transfer roller can be flipped from lying flat to standing upright on the support seat.

[0020] Furthermore, the aforementioned blank making heating unit in the automated production line of ring forgings, wherein: the structure of the trolley driving mechanism includes: a translation motor and a translation reducer installed on the transfer trolley, two sprockets are respectively installed on two oppositely arranged output shafts of the translation reducer, the translation motor drives the two sprockets to rotate through the translation reducer, a chain mounting seat is provided under the transfer trolley, two straight chains arranged along the trolley track are fixed on the chain mounting seat, the two sprockets are respectively meshed with the two chains one-to-one for transmission, so that the two sprockets can drive the transfer trolley to translate after rotating.

[0021] Furthermore, in the aforementioned blank making heating unit in the ring forging automatic production line, two chains are respectively mounted on chain mounting seats through a plurality of chain seats, and there are gaps between the two chains and the chain mounting seats.

[0022] Furthermore, in the aforementioned blank making heating unit in the ring forging automatic production line, one of the two sprockets is connected to the output shaft of the translation reducer by an expansion coupling sleeve for transmission.

[0023] Furthermore, in the aforementioned blank making heating unit in the ring forging automated production line, a brake is provided on the output shaft of the flip motor.

[0024] Furthermore, in the aforementioned blank making heating unit in the automated production line for ring forgings, there is also an impact-proof support located on the side of the transfer trolley. When the transfer roller is located at a position where it can be connected with other conveying mechanisms, the transfer trolley can resist the impact caused by the transfer roller receiving and conveying the blank by abutting against the impact-proof support.

[0025] Furthermore, in the aforementioned blank making heating unit in the ring forging automatic production line, a blocking seat is arranged opposite to the input end of the sawing machine input roller to prevent the bar from falling from the input end of the sawing machine input roller.

[0026] The advantages of the present invention are as follows: the blank making heating unit in the ring forging automated production line can automate bar loading, bar cutting, blank transfer and blank heating, which can greatly speed up the production rhythm and greatly improve the production efficiency of ring forgings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the blank making heating unit in the ring forging automatic production line described in the present invention.

[0028] Figure 2 for Figure 1 The structural schematic diagram of the bar stepping feeding device is shown in FIG.

[0029] Figure 3 for Figure 2 Schematic diagram of the top view structure.

[0030] Figure 4 for Figure 2 Center left view of the structure.

[0031] Figure 5 It is a structural diagram of the mechanical transmission mechanism.

[0032] Figure 6 for Figure 1 The structural schematic diagram of the blank turning and conveying device shown in (the blocking frame is not shown).

[0033] Figure 7 for Figure 6 Schematic diagram of the top view structure.

[0034] Figure 8 for Figure 6 Schematic diagram of the left-side structure (safety baffle not shown).

[0035] Fig. 9 This is a working status diagram when the blank turning and conveying device is not rotating.

[0036] Fig.10 This is a diagram of the working status of the blank turning and conveying device after rotation.

[0037] Fig.11 for Figure 1 The structural schematic diagram of the blank transferring and turning device is shown in FIG.

[0038] Fig.12 for Fig.11 Schematic diagram of the top view structure.

[0039] Fig.13 for Fig.12 Schematic diagram of the structure of the AA section.

[0040] Fig.14 This is a schematic diagram of the structure after the turning table in the blank transfer and turning device is turned 90 degrees. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with specific embodiments and drawings.

[0042] like Figure 1 As shown, the blank making heating unit in the ring forging automatic production line includes: a bar material stepping feeding device 1, a sawing machine input roller table 2, a CNC sawing machine 3, a sawing machine output roller table 4, a blank turning and conveying device 5, a blank transfer mechanism 6, a blank transfer and flipping device 7, a rotary heating furnace 9, and a feeding manipulator 8. When working, the bar material is hoisted onto the bar material stepping feeding device 1 by a program-controlled overhead crane, and the bar material stepping feeding device 1 can feed the bar material onto the sawing machine input roller table 2, and the sawing machine input roller table 2 can convey the bar material to the CNC sawing machine 3 for cutting to obtain the required blank, and the sawing machine output roller table 4 can convey the cut blank to the blank transfer mechanism 6, and the blank transfer and flipping device 7 can be turned into a rotary furnace 9, and the feeding robot arm 8 is used for feeding the blank. On the conveying device 5, the billet steering conveying device 5 can convey the billet to the billet transfer mechanism 6 after rotating and steering the billet. In this embodiment, the billet transfer mechanism 6 is a long-distance conveying roller; the billet transfer mechanism 6 can convey the billet to the billet transfer and turning device 7, the billet transfer and turning device 7 can convey the billet to the heating and loading position between the rotary heating furnace 9 and the loading robot 8, and can turn the billet so that the billet can stand up, the loading robot 8 can grab the billet standing up on the heating and loading position, and the loading robot 8 can send the grabbed billet into the rotary heating furnace 9 for heating.

[0043] like Figure 1As shown, a blocking seat 10 for blocking the bar material and preventing the bar material from falling from the input end of the sawing machine input roller 2 is arranged opposite to the input end of the sawing machine input roller 2.

[0044] In this embodiment, if Figure 2 , Figure 3 , Figure 4As shown, the structure of the bar material stepping feeding device 1 includes: a frame 11, on which three bar material temporary storage seats are arranged at equal intervals along the front and rear directions, and the three bar material temporary storage seats are respectively a first bar material temporary storage seat 12, a second bar material temporary storage seat 121, and a third bar material temporary storage seat 122 from the back to the front, and a blocking frame 123 is arranged behind the first bar material temporary storage seat 12 to prevent the bar material from rolling backwards from the temporary storage seat, each bar material temporary storage seat is located behind the sawing machine input roller 2, and the bar material 14 can be placed on each bar material temporary storage seat in a left-right direction, and a horizontally arranged bar material transfer frame 131 and a lifting drive mechanism are also provided on the frame 11. , a sliding drive mechanism, the bar material transfer frame 131 can be installed on the lifting drive mechanism so as to slide forward and backward, the lifting drive mechanism can drive the bar material transfer frame 131 to move up and down, the sliding drive mechanism can drive the bar material transfer frame 131 to slide forward and backward on the lifting drive mechanism, and a transfer positioning seat corresponding to each bar material temporary storage seat is arranged on the bar material transfer frame 131, and the three transfer positioning seats are respectively the first transfer positioning seat 15, the second transfer positioning seat 151, and the third transfer positioning seat 152 from the back to the front, and each transfer positioning seat is arranged at equal intervals along the front and rear direction, and the front and rear distances between each adjacent bar material temporary storage seat and each adjacent transfer positioning seat are equidistant. The front-to-back distance between the positions, and the front-to-back distance between the saw machine input roller 2 and the third bar storage seat 122 are all S. After the bar transfer rack 131 is driven by the lifting drive mechanism to move downward, it can be lower than each bar storage seat, so that the bar 14 can be placed on the bar storage seat. Then, after the bar transfer rack 131 slides backward under the drive of the sliding drive mechanism, the bar transfer rack 131 can move to a position where each transfer positioning seat is aligned with each bar storage seat one by one. Then, after the bar transfer rack 131 is driven by the lifting drive mechanism to move upward, the bar transfer rack 131 can place the bar 14 on each bar storage seat. The bars 14 are lifted and positioned on the respective transfer and positioning seats, and then the bar transfer frame 131 slides forward under the drive of the sliding drive mechanism, and the bar transfer frame 131 can move each bar 14 forward by a distance S, and then the bar transfer frame 131 moves downward under the drive of the lifting drive mechanism, and the bar transfer frame 131 can pass through the sawing machine input roller 2 and place the front bar 14 on the sawing machine input roller 2, and the other two bars 14 can be placed on the second bar temporary storage seat 121 and the third bar temporary storage seat 122, respectively. At this time, the first bar temporary storage seat 12 will be vacated so that new bars can be placed. The sawing machine input roller 2 is composed of several independently driven short-distance rollers, and there are gaps between each short-distance roller, so that the bar transfer frame 131 can pass through the sawing machine input roller 2 up and down through the gaps.

[0045] In this embodiment, the structure of the lifting drive mechanism includes: two lifting units arranged side by side at intervals, each lifting unit includes: three cranks arranged at intervals along the front and rear directions, a transmission rod 17, and a lifting cylinder 18. The last crank arranged in each crank is a large crank 161, and the remaining cranks are small cranks 16. The structure of each crank includes: an upper arm 162 and a lower arm 163. The rear end of the upper arm 162 is connected to the upper end of the lower arm 163, and a lifting roller 164 is provided on the front end of the upper arm 162; each crank is hinged to the frame 11 so as to be able to swing back and forth, and the hinge point of the crank and the frame 11 is located at the connection between the upper arm 162 and the lower arm 163. The lower end of the lower arm 163 of each small crank 16 and the middle part of the lower arm 163 of the large crank 161 are hinged to the transmission rod 17, so that each crank can be linked through the transmission rod 17. The lifting cylinder 18 is located behind the large crank 161. The cylinder body is hinged with the frame 11, the piston rod of the lifting cylinder 18 is hinged with the lower end of the lower arm 163 of the large crank 161, and the piston rod of the lifting cylinder 18 can drive the large crank 161 to swing forward and backward after being extended and retracted. After the large crank 161 swings, it can swing forward and backward with other small cranks 16 through the transmission rod 17; a synchronization shaft 19 is arranged between the two large cranks 161 in the two lifting units, and the two large cranks 161 are respectively installed on the two ends of the synchronization shaft 19, so that The two large cranks 161 can swing synchronously, and the bar transfer frame 131 is supported by the lifting rollers 164 in the two lifting units and can slide back and forth on the lifting rollers 164. The lifting rollers 164 will move up and down as the cranks swing back and forth, thereby driving the bar transfer frame 131 to move up and down. A transfer frame limiting mechanism is provided between each lifting roller 164 and the bar transfer frame 131 for limiting the left and right position of the bar transfer frame 131.

[0046] The structure of the bar transfer rack 131 includes: two transfer beams 133 running forward and backward and arranged side by side at intervals, the front end, middle part and rear end of the two transfer beams 133 are respectively connected and fixed by a cross beam 134; the lifting roller 164 in the left lifting unit is supported under the left transfer beam 133, and the lifting roller 164 in the right lifting unit is supported under the right transfer beam 133. The structure of the transfer positioning seat includes: two positioning platforms 153 arranged side by side at intervals, and a V-shaped groove for positioning the bar is provided on the top of the positioning platform 153, and the two positioning platforms 153 are respectively provided on the two transfer beams 133.

[0047] The structure of the transfer rack limiting mechanism is as follows: an annular groove arranged around the lifting roller 164 is provided on the wheel surface of each lifting roller 164, and a front-to-rear limiting rail 132 is provided on the lower surface of the two transfer beams 133 respectively. The two limiting rails 132 are respectively inserted into the annular grooves of each lifting roller 164 in the lifting unit on their side, so that the annular grooves can limit the bar material transfer rack 131 to the left and right through the limiting rails 132.

[0048] The sliding drive mechanism is two push-pull cylinders 110, the cylinder bodies of the push-pull cylinders 110 are hinged to the frame 11, the piston rods of the push-pull cylinders 110 are hinged to the crossbeam 134 in the middle of the rod transfer rack 131, and the piston rods of the two push-pull cylinders 110 can drive the rod transfer rack 131 to slide forward and backward after extension.

[0049] The structure of each bar temporary storage seat includes: two load-bearing columns 111 arranged side by side at intervals, and the top of the load-bearing column 111 is provided with a V-shaped groove for positioning the bar 14; the bar transfer frame 131 is located between the two load-bearing columns 111 of each bar temporary storage seat.

[0050] Each bar stock temporary storage seat is provided with a sensor for sensing the bar stock. The first bar stock temporary storage seat 12 uses a more reliable mechanical transmission mechanism to trigger the sensor, such as Figure 5 As shown, the structure of the mechanical transmission mechanism includes: a swing rod 191, the middle part of the swing rod 191 is hinged with the first temporary bar storage seat 12, a weight 192 is fixed on the lower end of the swing rod 191, a photoelectric sensor 193 is arranged below the weight 192, and a support column 194 is arranged on the first temporary bar storage seat 12 for the weight 192 to abut against so that the weight 192 cannot continue to swing downward. When there is no bar on the first temporary bar storage seat 12, the weight 192 will swing downward to a position abutting against the support column 194, and the photoelectric sensor 193 will be triggered by the weight 192; when there is a bar on the first temporary bar storage seat 12, the bar will press on the upper end of the swing rod 191, and the weight 192 will swing upward to a position that does not trigger the photoelectric sensor 193. The sensors on the second temporary bar storage seat 121 and the third temporary bar storage seat 122 are all triggered by the bar.

[0051] During loading, the bar material transfer rack 131 is lower than each bar material temporary storage seat, and the bar material transfer rack 131 is located at a position where the three transfer positioning seats and the three bar material temporary storage seats are aligned left and right, and then the three bars are hoisted to the first bar material temporary storage seat 12, the second bar material temporary storage seat 121, and the third bar material temporary storage seat 122 by the program-controlled overhead crane for temporary storage, and then the bar material transfer rack 131 is driven by the lifting drive mechanism to move upward to place the three bars placed on the three bar material temporary storage seats. The bars 14 are lifted and positioned on the three transfer and positioning seats respectively, and then the bar transfer frame 131 slides forward under the drive of the sliding drive mechanism to move the three bars 14 forward by a distance S, and then the bar transfer frame 131 moves downward under the drive of the lifting drive mechanism to place the front bar 14 on the sawing machine input roller table 2, and the other two bars 14 are placed on the second bar temporary storage seat 121 and the third bar temporary storage seat 122 respectively. After completing the first step-by-step loading of the rods, the program-controlled overhead crane hoists a rod to the first rod temporary storage seat 12 for replenishment. At the same time, the rod transfer frame 131 slides backward under the drive of the sliding drive mechanism to make the three transfer positioning seats and the three rod temporary storage seats aligned left and right one by one. Then, the rod transfer frame 131 moves upward under the drive of the lifting drive mechanism to lift the three rods 14 placed on the three rod temporary storage seats and position them on the three transfer positioning seats respectively. Then, the rod transfer frame 131 slides forward under the drive of the sliding drive mechanism to move the three rods 14 forward a distance S. Then, the rod transfer frame 131 moves downward under the drive of the lifting drive mechanism to place the front rod 14 on the sawing machine input roller 2, and place the other two rods 14 on the second rod temporary storage seat 121 and the third rod temporary storage seat 122 respectively. In this way, the second step-by-step loading of the rods is completed. When the programmable overhead crane fails to lift the bar, since there is a bar temporarily stored on the second bar temporary storage seat 121 and the third bar temporary storage seat 122 respectively, there are still two bars available for production, thereby reducing the adverse effect of the overhead crane failure on the production of ring forgings.

[0052] like Figure 6 , Figure 7 , Figure 8As shown, the structure of the blank turning and conveying device 5 includes: a base 51, a vertical rotating shaft 52 is installed on the base 51 through a bearing, a stand 53 is arranged above the base 51, the middle part of the stand 53 is fixed to the top of the rotating shaft 52, so that the stand 53 can rotate horizontally on the base 51 through the rotating shaft 52, a transition roller 54 driven separately is installed on the stand 53, and a rotating driving mechanism for driving the stand 53 to rotate horizontally 90 degrees with the transition roller 54 in the desired direction is arranged between the stand 53 and the base 51, and a rotating driving mechanism for driving the stand 53 to rotate horizontally 90 degrees with the transition roller 54 at the output end of the transition roller 54 is arranged. A blocking frame 57 is arranged opposite, and two blocking columns 58 are arranged side by side and spaced apart on the blocking frame 57, and a pushing mechanism 59 is located between the two blocking columns 58. When the transition roller 54 is not rotating, the blank 510 transported by the transition roller 54 can stop moving by colliding with the two blocking columns 58, and the pushing mechanism 59 can push the stopped blank 510 through the pushing rod thereon, so that the blank 510 can retreat on the transition roller 54 and away from the two blocking columns 58, so that the blank 510 will not collide with the two blocking columns 58 when the transition roller 54 rotates.

[0053] In this embodiment, a safety baffle 511 is further provided which does not hinder the rotation of the transition roller 54 and the blank 510. After the transition roller 54 rotates horizontally 90 degrees in the desired direction, the input end of the transition roller 54 can be exactly opposite to the safety baffle 511. At this time, the safety baffle 511 can prevent the blank 510 from falling from the input end of the transition roller 54 by blocking the input end of the transition roller 54. In actual production, the transition roller 54 may transport the blank 510 in the reverse direction due to a program error. At this time, if there is no safety baffle 511, the blank 510 will fall from the input end of the transition roller 54 to the ground, which will be very dangerous and prone to safety accidents.

[0054] In this embodiment, four support rollers 512 are arranged around the rotating shaft 52 on the lower surface of the stand 53, and the base 51 can support the stand 53 through the four support rollers 512. Rubber pads for reducing impact are provided on the tops of the two blocking columns 58 and the tops of the push rods of the push mechanism 59. In this embodiment, the push mechanism 59 is an oil cylinder, and the push rod is the piston rod of the oil cylinder.

[0055] A plurality of protective brackets 513 are arranged at intervals along the transition roller 54 on both sides of the transition roller 54 . The protective brackets 513 on both sides can limit the blank 510 , thereby preventing the blank 510 from rolling off the side of the transition roller 54 .

[0056] An annular track 514 is laid on the base 51, and each supporting roller 512 rolls on the annular track 514. The surface of the annular track 514 is processed to be relatively flat, which is convenient for the supporting rollers 512 to roll. In addition, when the surface of the annular track 514 is worn, the annular track 514 can be replaced.

[0057] The structure of the rotating drive mechanism is as follows: a large gear 55 is fixed on the lower surface of the stand 53 and is mounted on the outside of the rotating shaft 52. There is a gap between the large gear 55 and the rotating shaft 52. A small gear 56 driven to rotate by a servo motor is installed on the base 51. The small gear 56 is meshed with the large gear 55, so that the stand 53 and the transition roller 54 can be driven by the servo motor to rotate horizontally 90 degrees in the desired direction.

[0058] like Fig. 9 As shown, the blank turning and conveying device 5 is arranged between the output end of the sawing machine output roller 4 and the input end of the blank transfer mechanism 6. Initially, the sawing machine output roller 4 and the transition roller 54 are connected to each other, and the blank is conveyed from the sawing machine output roller 4 to the transition roller 54. Then, the blank moves under the conveyance of the transition roller 54 until it collides with the two blocking columns 58 and stops moving. Then, the pushing mechanism 59 pushes the blank so that the blank can retreat on the transition roller 54 and away from the two blocking columns 58. Then, as shown in FIG. Fig.10 As shown, the stand 53 and the transition roller 54 are driven by the servo motor to rotate horizontally 90 degrees in the desired direction, so that the transition roller 54 and the billet transfer mechanism 6 are connected, and then the transition roller 54 transports the billet to the billet transfer mechanism 6, thus completing the turning and conveying of the billet.

[0059] like Fig.11 , Fig.12 , Fig.13As shown, the structure of the blank transfer and flipping device 7 includes: a transfer trolley 71, two trolley tracks 72 are arranged on the ground below the transfer trolley 71, the transfer trolley 71 is installed on the two trolley tracks 72, the transfer trolley 71 can translate along the two trolley tracks 72, and four wheels are arranged on the lower part of the transfer trolley 71, two wheels on one side and two wheels on the other side are respectively rotatably installed on the two trolley tracks 72, and limited retaining edges are arranged on the inner sides of the four wheels so that the transfer trolley 71 will not slide off the two trolley tracks 72, and a trolley driving mechanism for driving the transfer trolley 71 to translate along the trolley tracks 72 is also arranged, a flip shaft 73 is arranged on the transfer trolley 71, the flip shaft 73 is rotatably installed on the transfer trolley 71 through two bearings, a flip table 74 is fixed on the flip shaft 73, and a flip table 74 is fixed on the transfer trolley 7 1 is also provided with a turning reducer 76 and a turning motor 75. The turning motor 75 drives the turning shaft 73 to rotate through the turning reducer 76, so as to drive the turning table 74 to turn 90 degrees. A horizontally arranged transfer roller 77 and a support seat 78 that are driven separately are installed on the turning table 74. The support seat 78 is located opposite to the output end of the transfer roller 77 for the blank 510 to abut against. The transfer trolley 71 can move toward one end of the trolley track 72 under the driving of the trolley driving mechanism, and then the transfer roller 77 can be moved to a position where it can be connected with the blank transfer mechanism 6, so that the blank transfer mechanism 6 can transport the blank 510 to the transfer roller 77. Then, the transfer trolley 71 can move toward the other end of the trolley track 72 under the driving of the trolley driving mechanism, and then the transfer roller 77 and the blank 510 can be moved to the heating loading position between the loading robot 8 and the rotary heating furnace 9. Fig.14 As shown, after the turning table 74 is turned 90 degrees under the drive of the turning motor 75, the blank 510 on the transfer roller 77 can be turned from lying flat to standing upright on the support seat 78, so that the loading robot 8 can grab the blank 510.

[0060] In this embodiment, an anti-impact support 715 is also provided on the side of the transfer trolley 71. When the transfer roller 77 is located at a position where it can be connected to the blank transfer mechanism 6, the transfer trolley 71 can resist the impact caused by the transfer roller 77 receiving and conveying the blank by abutting against the anti-impact support 715. This arrangement can prevent the transfer trolley 71 from being separated from the track due to impact.

[0061] In this embodiment, the structure of the trolley driving mechanism includes: a translation motor 79 and a translation reducer 710 installed on the transfer trolley 71, two sprockets 711 are respectively installed on two oppositely arranged output shafts of the translation reducer 710, the translation motor 79 drives the two sprockets 711 to rotate through the translation reducer 710, a chain mounting seat is provided under the transfer trolley 71, two straight chains 712 arranged along the trolley track 72 are fixed on the chain mounting seat, the two sprockets 711 and the two chains 712 are respectively engaged with each other one-to-one for transmission, so that the two sprockets 711 can drive the transfer trolley 71 to translate after rotating.

[0062] The two chains 712 are respectively installed on the chain mounting seats through several chain seats 713. There are gaps between the two chains 712 and the chain mounting seats. This arrangement is to ensure that the iron oxide scale and other debris on the blank can be removed through the gap after falling onto the chain, thereby ensuring the cleanliness of the sprocket and chain meshing surfaces.

[0063] One of the two sprockets 711 is connected to the output shaft of the translation reducer 710 by an expansion sleeve. After this arrangement, the sprocket can adjust the axial position so that the distance between the two sprockets becomes adjustable, thereby facilitating the installation of the two sprockets, thus ensuring that both sprockets can mesh well with the chain.

[0064] A brake 714 is provided on the output shaft of the flipping motor 75, and the brake 714 is used to lock the flipping motor 75 after flipping into place, thereby ensuring the stability of the blank when the loading robot grabs the blank.

[0065] During operation, the transfer trolley 71 is driven by the trolley driving mechanism to translate toward one end of the trolley track 72, and then moves the transfer roller 77 to a position where it can be connected to the blank transfer mechanism 6. The blank transfer mechanism 6 transports the blank 510 to the transfer roller 77, and then the transfer roller 77 transports the blank 510 to a position close to the support seat 78. Then, the transfer trolley 71 is driven by the trolley driving mechanism to translate toward the other end of the trolley track 72, and then moves the transfer roller 77 and the blank 510 to the heating loading position between the loading robot 8 and the rotary heating furnace 9, and then flips over. Driven by the flip motor 75, the table 74 flips 90 degrees to flip the blank 510 on the transfer roller 77 from lying flat to standing upright on the support seat 78, and then the loading robot 8 grabs the blank 510. Then the transfer cart 71 is driven by the cart driving mechanism to move horizontally away from between the loading robot 8 and the rotary heating furnace 9, so that the transfer cart 71 does not hinder the loading of the loading robot 8. Then, the program-controlled loading robot 8 sends the grabbed blank 510 into the rotary heating furnace 9 for heating. After heating, the unloading robot takes the blank out of the rotary heating furnace 9.

Claims

1. A blank making heating unit in an automated production line for ring forgings, characterized in that: include: The bar material step-by-step feeding device, sawing machine input roller table, CNC sawing machine, sawing machine output roller table, billet steering conveying device, billet transfer mechanism, billet transfer and flipping device, rotary heating furnace, and feeding robot, the bar material step-by-step feeding device can load the bar material onto the sawing machine input roller table, the sawing machine input roller table can convey the bar material to the CNC sawing machine for cutting to obtain the required billet, the sawing machine output roller table can convey the cut billet to the billet steering conveying device, the billet steering conveying device can convey the billet to the billet transfer mechanism after rotating and steering the billet, the billet transfer mechanism can convey the billet to the billet transfer and flipping device, and the billet transfer and flipping device can convey the billet to the rotary heating furnace. The loading robot can grab the standing blank on the heating loading position, and the loading robot can send the grabbed blank into the rotary heating furnace for heating; the structure of the bar stepping loading device includes: a frame, on which are arranged a plurality of bar temporary storage seats equidistantly spaced along the front and rear directions, and the bar can be placed on each bar temporary storage seat in a left-right direction; the frame is also provided with a bar transfer rack, a lifting drive mechanism, and a sliding drive mechanism; the bar transfer rack can be installed on the lifting drive mechanism for sliding back and forth; the lifting drive mechanism can drive the bar transfer rack to move up and down, and the sliding drive mechanism can be driven by the lifting drive mechanism to move the bar transfer rack up and down. The transfer drive mechanism can drive the bar material transfer rack to slide forward and backward on the lifting drive mechanism. The bar material transfer rack is provided with transfer positioning seats corresponding to each bar material temporary storage seat one by one. Each transfer positioning seat is arranged at equal intervals along the front and rear direction. The front and rear distances between each adjacent bar material temporary storage seat and the front and rear distances between each adjacent transfer positioning seats are both S. After the bar material transfer rack moves downward under the drive of the lifting drive mechanism, it can be lower than each bar material temporary storage seat, so that the bar material can be placed on the bar material temporary storage seat. Then, after the bar material transfer rack slides backward under the drive of the sliding drive mechanism, the bar material transfer rack can move to a position where each transfer positioning seat is aligned left and right with each bar material temporary storage seat. The rod transfer rack is then driven upward by the lifting drive mechanism, and the rod transfer rack can lift the rods placed on each bar temporary storage seat and position them on each transfer positioning seat respectively. Then, the rod transfer rack slides forward under the drive of the sliding drive mechanism, and the rod transfer rack can move each bar forward by a distance S. Then, the rod transfer rack moves downward under the drive of the lifting drive mechanism, and the rod transfer rack can pass through the sawing machine input roller table and place the front bar on the sawing machine input roller table, while the other bars can be placed on the bar temporary storage seats below them respectively. At this time, the last bar temporary storage seat will be vacated so that new bars can be placed.Each bar storage seat is provided with a sensor for sensing bars. The last bar storage seat uses a mechanical transmission mechanism to trigger the sensor. The structure of the mechanical transmission mechanism includes: a swing arm, the middle part of which is hinged to the bar storage seat, a heavy hammer is fixed on the lower end of the swing arm, a photoelectric sensor is arranged below the heavy hammer, and a support column is arranged on the bar storage seat for the heavy hammer to abut against so that the heavy hammer cannot continue to swing downward. When no bar is placed on the bar storage seat, the heavy hammer will swing downward to a position abutting against the support column, and the photoelectric sensor will be triggered by the heavy hammer; when bar is placed on the bar storage seat, the bar will be pressed on the upper end of the swing arm, and the heavy hammer will swing upward to a position that does not trigger the photoelectric sensor; the structure of the blank steering and conveying device includes: a base, a vertical rotating shaft is installed on the base through a bearing, and a stand is arranged above the base, and the middle part of the stand is connected to the rotating shaft. The top is fixed so that the stand can rotate horizontally on the base through the rotating shaft. A transition roller that is driven separately and connected to the sawing machine output roller is installed on the stand. The sawing machine output roller can transport the blank to the transition roller. A rotating drive mechanism is arranged between the stand and the base. The rotating drive mechanism can drive the stand to rotate horizontally X degrees with the transition roller in the required direction, so that the transition roller can be connected to the blank transfer mechanism, so that the transition roller can transport the blank to the blank transfer mechanism. A blocking frame is arranged opposite to the output end of the transition roller, and a blocking column and a pushing mechanism are arranged on the blocking frame. When the transition roller is not rotating, the blank transported by the transition roller can stop moving by colliding with the blocking column. The pushing mechanism can push the stopped blank through the pushing rod thereon, so that the blank can retreat on the transition roller and stay away from the blocking column, so that the blank will not collide with the blocking column when the transition roller rotates.The structure of the blank transfer and flipping device includes: a transfer trolley, a trolley track is arranged below the transfer trolley, the transfer trolley is installed on the trolley track, the transfer trolley can translate along the trolley track, and a trolley driving mechanism for driving the transfer trolley to translate along the trolley track is also arranged, a flip shaft is arranged on the transfer trolley, the flip shaft is rotatably installed on the transfer trolley through two bearings, a flip table is fixed on the flip shaft, a flip reducer and a flip motor are also arranged on the transfer trolley, the flip motor can drive the flip shaft to rotate through the flip reducer, thereby driving the flip table to flip 90 degrees, and a separately driven water The horizontally arranged transfer roller and support seat, the support seat is located opposite to the output end of the transfer roller for the blank to abut against, the transfer trolley can move the transfer roller belt to a position where it can be connected with the blank transfer mechanism after being driven by the trolley driving mechanism to one end of the trolley track, so that the blank transfer mechanism can transport the blank to the transfer roller, and then the transfer trolley can move the transfer roller and the blank belt to the heating loading position between the loading manipulator and the rotary heating furnace after being driven by the trolley driving mechanism to move 90 degrees under the drive of the flip motor, so that the blank on the transfer roller can be flipped from lying flat to standing upright on the support seat. ; 2. The blank making heating unit in the ring forging automatic production line according to claim 1 is characterized in that: The structure of the lifting drive mechanism includes: two lifting units arranged side by side at intervals, each lifting unit includes: several cranks, transmission rods, and lifting cylinders arranged at intervals along the front and rear directions, the last crank in each crank is a large crank, and the remaining cranks are small cranks, and the structure of each crank includes: an upper arm and a lower arm, the rear end of the upper arm is connected to the upper end of the lower arm, and a lifting roller is arranged on the front end of the upper arm; each crank is hinged to the frame so as to be able to swing back and forth, and the hinge point of the crank and the frame is located at the connection between the upper arm and the lower arm, the lower end of the lower arm of each small crank and the middle part of the lower arm of the large crank are hinged to the transmission rod, so that each crank can be linked through the transmission rod, the lifting cylinder is located behind the large crank, and the cylinder of the lifting cylinder The body and the piston rod are hinged one-to-one with the frame and the lower end of the lower arm of the large crank. After the piston rod of the lifting cylinder is extended and retracted, it can drive the large crank to swing back and forth. After the large crank swings, it can swing back and forth with the small crank through the transmission rod; a synchronization shaft is arranged between the two large cranks in the two lifting units, and the two large cranks are respectively installed on the two ends of the synchronization shaft, so that the two large cranks can swing synchronously, and the bar transfer frame is supported by each lifting roller in the two lifting units and can slide back and forth on the lifting rollers. Each lifting roller will move up and down as each crank swings back and forth, thereby driving the bar transfer frame to move up and down, and a transfer frame limiting mechanism for limiting the left and right position of the bar transfer frame is arranged between each lifting roller and the bar transfer frame.

3. The blank making heating unit in the ring forging automatic production line according to claim 2 is characterized in that: The structure of the transfer rack limiting mechanism is as follows: an annular groove arranged around the lifting roller is provided on the wheel surface of each lifting roller, and a front-to-back limiting rail is provided on the lower surface of the left and right sides of the bar material transfer rack respectively, and the two limiting rails are respectively inserted into the annular grooves of each lifting roller in the lifting unit on their side.

4. The blank making heating unit in the ring forging automatic production line according to claim 1, 2 or 3, characterized in that: The sliding drive mechanism is a push-pull oil cylinder, the cylinder body and piston rod of which are hinged to the frame and the bar material transfer rack one-to-one respectively. The piston rod of the push-pull oil cylinder can drive the bar material transfer rack to slide forward and backward after being extended and retracted.

5. The blank making heating unit in the ring forging automatic production line according to claim 2 or 3, characterized in that: The structure of the bar transfer rack includes: two transfer beams running forward and backward and arranged side by side at intervals, and the front end, middle part and rear end of the two transfer beams are respectively connected and fixed by a cross beam; the lifting roller in the left lifting unit is supported under the left transfer beam, and the lifting roller in the right lifting unit is supported under the right transfer beam; the structure of the transfer positioning seat includes: two positioning platforms arranged side by side at intervals, and a V-shaped groove for positioning the bar is arranged on the top of the positioning platform, and the two positioning platforms are respectively arranged on the two transfer beams.

6. The blank making heating unit in the ring forging automatic production line according to claim 1, 2 or 3, characterized in that: The structure of each bar temporary storage seat includes: two load-bearing columns arranged side by side at intervals, and a V-shaped groove for positioning the bars is arranged on the top of the load-bearing columns; the bar transfer frame is located between the two load-bearing columns of each bar temporary storage seat.

7. The blank making heating unit in the ring forging automatic production line according to claim 1 is characterized in that: A safety baffle is also provided which does not hinder the rotation of the transition roller and the blank. After the transition roller rotates horizontally X degrees in the desired direction, the input end of the transition roller can be exactly opposite to the safety baffle. At this time, the safety baffle can prevent the blank from falling from the input end of the transition roller by blocking at the input end of the transition roller.

8. The blank making heating unit in the ring forging automatic production line according to claim 1 or 7, characterized in that: The structure of the rotating drive mechanism is as follows: a large gear is fixed on the lower surface of the gantry and is mounted on the outside of the rotating shaft. There is a gap between the large gear and the rotating shaft. A small gear driven by a servo motor is installed on the base. The small gear and the large gear are meshed, so that the gantry and the transition roller can rotate horizontally by X degrees in the desired direction under the drive of the servo motor.

9. The blank making heating unit in the ring forging automatic production line according to claim 1 is characterized in that: A plurality of supporting rollers arranged around a rotating shaft are arranged on the lower surface of the stand, and the base can support the stand through the supporting rollers.

10. The blank making heating unit in the ring forging automatic production line according to claim 9, characterized in that: A circular track is laid on the base, and each supporting roller rolls on the circular track.

11. The blank making heating unit in the ring forging automatic production line according to claim 1 or 7, characterized in that: A plurality of protective brackets are arranged at intervals along the transition roller on both sides of the transition roller respectively. The protective brackets on both sides can limit the blank, thereby preventing the blank from rolling off the side of the transition roller.

12. The blank making heating unit in the ring forging automatic production line according to claim 1 or 7, characterized in that: The pushing mechanism is a hydraulic cylinder or an electric cylinder.

13. The blank making heating unit in the ring forging automatic production line according to claim 1, characterized in that: The structure of the trolley driving mechanism includes: a translation motor and a translation reducer installed on the transfer trolley, two sprockets are respectively installed on two oppositely arranged output shafts of the translation reducer, the translation motor drives the two sprockets to rotate through the translation reducer, a chain mounting seat is arranged under the transfer trolley, two straight chains arranged along the trolley track are fixed on the chain mounting seat, the two sprockets are meshed with the two chains one-to-one for transmission, so that the two sprockets can drive the transfer trolley to translate after rotating.

14. The blank making heating unit in the ring forging automatic production line according to claim 13, characterized in that: The two chains are respectively mounted on the chain mounting seats through a plurality of chain seats, and there are gaps between the two chains and the chain mounting seats.

15. The blank making heating unit in the ring forging automatic production line according to claim 13 or 14, characterized in that: One of the two sprockets is connected to the output shaft of the translation reducer through an expansion sleeve for transmission.

16. The blank making heating unit in the ring forging automatic production line according to claim 1 or 13 or 14, characterized in that: A brake is arranged on the output shaft of the flip motor.

17. The blank making heating unit in the ring forging automatic production line according to claim 1 or 13 or 14, characterized in that: An anti-impact support is also provided on the side of the transfer trolley. When the transfer roller is located at a position where it can be connected to the conveying mechanism, the transfer trolley can resist the impact caused by the transfer roller receiving and conveying the blank by leaning against the anti-impact support.

18. The blank making heating unit in the ring forging automatic production line according to claim 1, characterized in that: A blocking seat for blocking the bar material and preventing the bar material from falling from the input end of the sawing machine input roller table is arranged opposite to the input end of the sawing machine input roller table.

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