CN212145052U - Automatic feeding device of electric welding machine - Google Patents

Abstract

The utility model provides an electric welding automatic feeding device, including two sets of plate feed mechanism of corresponding setting, be located the welding bench between two sets of plate feed mechanism and set up the plate centering mechanism on the welding bench, plate centering mechanism is just corresponding to set up in the electric welding below, and is close to in step mutually by two sets of plates of plate centering mechanism promotion. The utility model discloses a this loading attachment can carry out a pair of material loading of treating the welding plate respectively by both sides to guarantee the batch and treat the feeding one by one of welding plate group, and can promote a pair of welding plate of treating and be close to in opposite directions, make its welding line just to corresponding the electric welding machine below.

Description

Automatic feeding device of electric welding machine

Technical Field

The utility model relates to a charging equipment technical field for the electric welding especially relates to an electric welding automatic feeding device.

Background

Electric welding is a welding operation performed by melting metal parts at high temperature by an electric arc using a welding rod where the metal parts need to be joined. At present to the welding between the plate, it welds through artifical manual much, for guaranteeing welding quality between the plate, welding operation ability requirement to the staff is higher, thereby make manufacturing cost higher, and production efficiency is low, and simultaneously, welding quality between the plate in batches also has the difference, therefore, for satisfying the welding demand between the plate in batches, guarantee production efficiency and welding quality, I department has carried out the corresponding research and development of welding equipment loading attachment between the plate, in order to improve the welded production efficiency between the plate in batches.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at solves the problem that exists among the prior art, provides one kind and can carry out a pair of material loading of treating the welded plate respectively by both sides to guarantee the batch and treat the feeding one by one of welded plate group, and can promote a pair of welded plate to be close to in opposite directions, make its welding line just to the electric welding automatic feeding device who corresponds the electric welding machine below.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides an electric welding automatic feeding device, wherein electric welding automatic feeding device includes two sets of plate feed mechanism of corresponding setting, is located the welding bench between two sets of plate feed mechanism and sets up the plate centering mechanism on the welding bench, the positive correspondence of plate centering mechanism sets up in the electric welding below, and promotes two sets of plates by plate centering mechanism and be close to in step mutually, treats the difference feeding of welding board by two sets of plate feed mechanism in the welding board group from both sides to effectively guarantee the material loading work efficiency of electric welding, and plate centering mechanism then can promote two and treat that the welding board is close to in opposite directions, makes welding line between them be located the electric welding below, makes things convenient for the electric welding to carry out the plate welding, thereby has improved the work efficiency of electric welding.

Further, the plate feeding mechanism comprises a plate feeding assembly and an auxiliary conveying line located at the output end of the plate feeding assembly, the output end of the auxiliary conveying line extends to the side of the welding table, the plate feeding assembly enables the plates to be welded in batches to be fed one by one, and the plates to be welded are conveyed to the welding table through the auxiliary conveying line to complete a pair of welding operations of the plates to be welded.

Further, the board feeding subassembly that pursues includes the frame, strides the guide transfer chain of locating in the frame and erects the upper plate limit width floodgate in guide transfer chain top, the output of guide transfer chain extends to the input top of supplementary transfer chain, form between the terminal and the guide transfer chain upper surface of upper plate limit width floodgate and cross the board passageway, the setting of upper plate limit width floodgate can make the plate on the guide transfer chain pass through the board passageway one by one to the realization is treated the board of welding and is expected in succession smoothly of welding to the plate, guarantees the many continuous welding of pair of plate.

Further, the guide transfer chain is including being fixed in the driving motor in the frame, connecting in the bull stick of driving motor output, adjacent cover locate the bull stick on the multiunit belt pulley, with the corresponding bracing piece of bull stick, the cylinder of cover on locating the bracing piece and the belt of transmission connection between belt pulley and cylinder, the equal rotating turret of bull stick and bracing piece is located between the frame, the cylinder is located the input top of supplementary transfer chain, and it is rotatory to drive the bull stick by driving motor for the bull stick drives the belt pulley and rotates, and the belt pulley then drives belt runing between its and cylinder, thereby realizes treating the transport of welding plate on the belt.

Furthermore, a lifting plate assembly is arranged above the input end of the material guide conveying line, stacked plates to be welded are obliquely placed on the material guide conveying line through the lifting plate assembly, so that the situation that the bottommost plates to be welded are pulled out smoothly from the plate passing channel by the material guide conveying line and conveyed to the auxiliary conveying line is guaranteed, and one-by-one plate feeding of the plates to be welded is achieved.

Further, upper plate limit for width floodgate is including erectting the mount pad between the frame and through adjusting bolt adjacent the multiunit gate of connecting on the mount pad, adjusting bolt is used for adjusting the terminal interval to guide transfer chain upper surface of gate, revolves soon adjusting bolt for the gate reciprocates to the height of changing the board passageway, adapts to passing through one by one of the board that treats welding plate of corresponding thickness, improves loading attachment's adaptability.

Further, the auxiliary conveying line is a belt conveyor, and the plate to be welded is conveyed to the welding table by the belt conveyor.

Further, plate centering mechanism is including setting up the centering subassembly on the welding bench and connecting in the board subassembly is dialled to the over-and-under type of centering subassembly output, the output that the board subassembly was dialled to the over-and-under type passes the working face of welding bench, and the centering subassembly drives the over-and-under type and dials the board subassembly and remove in opposite directions to when the working face of welding bench is worn out to the board subassembly is dialled to the over-and-under type, can promote to treat that two welded plates are close to in opposite directions, guarantee that the weld line between them is located under the electric welding, need not two positions of treating the welding board of artifical manual regulation.

Furthermore, the centering assembly comprises guide rods correspondingly erected on the welding table through three groups of supporting seats, two groups of sliding seats correspondingly sleeved on the guide rods in a sliding manner, a swing rod rotatably arranged on a middle supporting seat of the two groups of guide rods, connecting rods hinged at two ends of the swing rod, and a telescopic cylinder connected between the one group of sliding seats and the two groups of middle supporting seats of the guide rods, wherein the middle supporting seats of the two groups of guide rods are right opposite to the electric welding machine, a lifting shifting plate assembly is connected onto the sliding seats, one ends of the connecting rods, far away from the swing rod, are hinged onto the sliding seats, the sliding seats fixedly connected with the telescopic cylinder are driven to move along the guide rods, so that the connecting rods fixed on the sliding seats push and pull the swing rods to swing, the swing rods drive the other connecting rod to move, the sliding seats connected with the sliding seats are pushed to move along the guide rods, and ensuring that the welding line of the two plates is positioned below the electric welding machine, or resetting the lifting type shifting plate assembly to prepare for the next pair of shifting plates of the plates to be welded, wherein the welding line is the welding position of the two plates.

Furthermore, the telescopic cylinder can be set to be an electric, pneumatic or hydraulic cylinder, and is fixed on one group of sliding seats through bolts, and the output end of a piston rod of the telescopic cylinder is fixed on the middle supporting seat of the two groups of guide rods, the telescopic cylinder drives the sliding seats fixed with the telescopic cylinder to move, and the other group of sliding seats are driven to move along with the sliding seats through the matching of the swing rod and the two groups of connecting rods.

Further, over-and-under type group board subassembly is including being fixed in the lift cylinder on the slide and connecting in the pusher dog of the piston rod output of lift cylinder, and the lift cylinder drives the pusher dog and keeps away from the working face of welding bench to treat on supplementary transfer chain that the welded plate gets into the welding bench after, drive the pusher dog again by the lift cylinder and wear out the welding bench, and under the assistance of centering subassembly, stir and treat that the welded plate is close to each other.

Further, the lifting cylinder may be provided as an electric, pneumatic or hydraulic cylinder.

The utility model has the advantages and positive effects that:

(1) treat the difference feeding of two welding boards in the welding board group by two sets of plate feed mechanism follow both sides to effectively guarantee the material loading work efficiency of electric welding, plate centering mechanism then can promote two and treat that the welding board is close to in opposite directions, makes the welding line between them be located the electric welding below, makes things convenient for the electric welding to carry out the plate welding, thereby has improved the work efficiency of electric welding.

(2) The plate-by-plate feeding assembly can enable a batch of plates to be welded to be fed one by one to be conveyed to the welding table by the auxiliary conveying line to complete the welding operation of a pair of plates to be welded.

(3) The centering subassembly drives the over-and-under type and dials the board subassembly and remove in opposite directions to when the over-and-under type dials the working face that the board subassembly worn out the welding bench, can promote to treat that two plates of welded are close to in opposite directions, guarantee that the weld line between them is located under the electric welding, need not two positions of treating the weld plate of artifical manual regulation, thereby effectively improve the work efficiency of electric welding.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a plate feeding mechanism portion in fig. 1.

Fig. 3 is a schematic view showing a connection structure of a welding table and a plate centering mechanism portion in fig. 1.

FIG. 4 is a schematic view of the work surface of FIG. 3 with the weld station removed.

Fig. 5 is a schematic structural diagram of the electric welding machine of the present invention.

Fig. 6 is a partially enlarged schematic view of fig. 5.

FIG. 7 is a block diagram of the control relationship between the controller and various components of the welding machine.

In the figure: the plate feeding mechanism 1, the plate-by-plate feeding assembly 11, the rack 111, the gear 1111, the auxiliary rollers 1112, the material guide conveying line 112, the driving motor 1121, the rotating rod 1122, the belt pulley 1123, the supporting rod 1124, the roller 1125, the upper plate width-limiting gate 113, the mounting seat 1131, the adjusting bolt 1132, the gate 1133, the plate passing channel 114, the plate lifting assembly 115, the plate lifting frame 1151, the limiting member 1152, the guide plate roller 1153, the auxiliary conveying line 12, the welding table 2, the plate centering mechanism 3, the centering assembly 31, the supporting seat 311, the guide rod 312, the sliding seat 313, the oscillating bar 314, the connecting rod 315, the telescopic cylinder 316, the lifting plate-shifting assembly 32, the lifting cylinder 321, the shifting claw 322 and the electric welding machine 4.

Detailed Description

For a better understanding of the present invention, the following further description is given in conjunction with the following embodiments and accompanying drawings.

As shown in fig. 1, an automatic feeding device for an electric welding machine comprises two sets of plate feeding mechanisms 1 which are correspondingly arranged, a welding table 2 which is positioned between the two sets of plate feeding mechanisms 1, and a plate centering mechanism 3 which is arranged on the welding table 2, wherein the plate centering mechanism 3 is just correspondingly arranged below the electric welding machine 4, and the plate centering mechanism 3 pushes the two sets of plates to be synchronously close to each other.

As shown in fig. 2, further, the panel feeding mechanism 1 includes a panel-by-panel feeding block 11, and an auxiliary conveying line 12 at an output end of the panel-by-panel feeding block 11, and an output end of the auxiliary conveying line 12 extends to a side of the welding station 2.

Further, the board-by-board feeding assembly 11 includes a frame 111, a material guiding conveying line 112 straddling the frame 111, and an upper board width-limiting gate 113 erected above the material guiding conveying line 112, an output end of the material guiding conveying line 112 extends above an input end of the auxiliary conveying line 12, and a board passing channel 114 is formed between an end of the upper board width-limiting gate 113 and an upper surface of the material guiding conveying line 112.

Further, the material guiding conveying line 112 includes a driving motor 1121 fixed on the frame 111, a rotating rod 1122 connected to an output end of the driving motor 1121, a plurality of sets of belt pulleys 1123 adjacently sleeved on the rotating rod 1122, a supporting rod 1124 corresponding to the rotating rod 1122, a roller 1125 sleeved on the supporting rod 1124, and a belt in transmission connection between the belt pulleys 1123 and the roller 1125, wherein the rotating rod 1122 and the supporting rod 1124 are both rotatably erected between the frames 111, and the roller 1125 is located above an input end of the auxiliary conveying line 12.

Specifically, the driving motor 1121 may be fixed to the frame 111 by a bolt, and an output end of a motor shaft of the driving motor 1121 is connected to the rotating rod 1122 by a coupling; a plurality of sets of pulleys 1123 are keyed to and fixed on the rotating rod 1122; roller 1125 is keyed to support rod 1124.

Further, the upper plate width-limiting gate 113 includes a mounting seat 1131 erected between the racks 111, and a plurality of sets of gates 1133 adjacently connected to the mounting seat 1131 by adjusting bolts 1132, wherein the adjusting bolts 1132 are used for adjusting the distance from the ends of the gates 1133 to the upper surface of the guide conveying line 112.

Specifically, the mounting seat 1131 may be welded and fixed between the frames 111, and the adjusting bolt 1132 is screwed into the mounting seat 1131 through the shutter 1133.

Further, a lifting plate assembly 115 is disposed above the input end of the material guiding conveying line 112.

Further, the sliding frame of the plate lifting assembly 115 is arranged between the racks 111, and the plate lifting assembly 115 slides on the racks 111, so that the plate lifting assembly 115 is suitable for upper plates of plates to be welded with various length specifications, and the practicability is high.

Further, the plate lifting assembly 115 includes a plate lifting frame 1151 sliding between the racks 111, a limiting member 1152 locking the plate lifting frame 1151 on the racks 111, and a guide plate roller 1153 rotatably disposed on the plate lifting frame 1151, one end of the stacked plates to be welded is overlapped on the guide plate roller 1153, the other end of the stacked plates to be welded is overlapped on the material guiding conveying line 112, the plate lifting frame 1151 slides on the racks 111, and the distance from the plate lifting frame 1151 to the material guiding conveying line 112 is changed, so that the plate lifting frame 1151 is suitable for feeding of plates to be welded with various lengths and specifications.

Further, the lift rack 1151 includes two rack bars slidably installed on the rack 111, a link connected between the two rack bars, and an inclined lever at a start end of the rack bar, and the guide roller 1153 is rotatably installed between the inclined levers.

Further, the rack 111 is rotatably connected with the gear 1111 and the two sets of auxiliary rollers 1112 through rotating shafts, the gear 1111 and the two sets of auxiliary rollers 1112 are arranged in a triangular shape, a sliding channel is formed between the gear 1111 and the two sets of auxiliary gears 1111, the rack rod is located in the sliding channel and is in meshed transmission with the gear 1111, and the rotating shafts of the gear 1111 are rotated, so that the gear 1111 rotates along with the sliding channels to stir the rack rod meshed with the gear 1111 to move linearly in the sliding channel, thereby changing the distance from the inclined cantilever rod to the material guide conveying line 112, realizing the distance adjustment between the guide plate roller 1153 and the belt pulley 1123 on the gear, meeting the requirement of stacking and placing of plates to be welded with corresponding length specifications, and ensuring the normal operation of later-stage feeding work.

Further, the limiting member 1152 is configured as a lock nut, and the lock nut is screwed on the rotating shaft of the gear 1111, and the lock nut is screwed to be close to the side wall of the rack 111 or far from the side wall of the rack 111, so as to lock or unlock the rotating shaft, so as to limit the gear 1111 or enable the gear 1111 to rotate.

Specifically, the guide plate roller 1153 is rotatably mounted between the inclined take-up levers by a support shaft; the rack bar, the link and the inclined ram may be integrally formed.

Further, the auxiliary conveying line 12 is provided as a belt conveyor.

As shown in fig. 3 and 4, further, the plate centering mechanism 3 includes a centering assembly 31 disposed on the welding table 2, and a lifting plate-pulling assembly 32 connected to an output end of the centering assembly 31, wherein an output end of the lifting plate-pulling assembly 32 penetrates through a working surface of the welding table 2.

Further, the centering assembly 31 includes guide rods 312 correspondingly erected on the welding table 2 through three sets of supporting seats 311, two sets of sliding seats 313 correspondingly slidably sleeved on the guide rods 312, swing rods 314 rotatably arranged on the middle supporting seats 311 of the two sets of guide rods 312, connecting rods 315 hinged to two ends of the swing rods 314, and telescopic cylinders 316 connected between the one set of sliding seats 313 and the middle supporting seats 311 of the two sets of guide rods 312, the middle supporting seats 311 of the two sets of guide rods 312 are opposite to the corresponding electric welding machines 4, the lifting shifting plate assembly 32 is connected to the sliding seats 313, and one ends, far away from the swing rods 314, of the connecting rods 315 are hinged to the sliding seats.

Specifically, the supporting seats 311 are fixed on the welding table 2 by bolts or welding, and the three groups of supporting seats 311 are correspondingly penetrated by the guide rods 312; the swing rod 314 is rotatably connected to the intermediate support seat 311 through a rotating shaft, and two ends of the swing rod 314 are rotatably connected to the connecting rod 315 through the rotating shaft; one end of the connecting rod 315, which is far away from the swing rod 314, is rotatably connected to the sliding seat 313 through a rotating shaft.

Further, the telescopic cylinder 316 may be configured as an electric, pneumatic or hydraulic cylinder, and is fixed on the set of sliding seats 313 through bolts, and the output end of the piston rod thereof is fixed on the intermediate supporting seat 311 of the two sets of guiding rods 312.

Further, the lifting paddle assembly 32 includes a lifting cylinder 321 fixed to the slide 313, and a paddle 322 connected to a piston rod output end of the lifting cylinder 321.

Specifically, the lifting cylinder 321 may be fixed to the sliding base 313 by a bolt, and the finger 322 may be provided as a plate member that is fixed to the output end of the piston rod of the lifting cylinder 321 by a bolt.

Further, the lifting cylinder 321 may be provided as an electric, pneumatic or hydraulic cylinder.

The specific model specifications of the driving motor 1121, the belt conveyor, the telescopic cylinder 316 and the lifting cylinder 321 need to be calculated and determined according to the specification parameters of the feeding device and the specification range of the plates to be welded, and the like.

As shown in fig. 5 and 6, the electric welding machine 4 may include a base straddling the welding table 2, a traverse assembly mounted on the base, a welding gun lifting cylinder disposed at an output end of the traverse assembly, an angle-adjustable holder connected to an output end of the welding gun lifting cylinder, and a welding gun fixed in the holder, wherein the traverse assembly may include a rotary motor fixed on the base, a lead screw connected to an output end of a motor shaft of the rotary motor through a coupling, a feed bar disposed beside the lead screw and mounted on the base, and a moving base slidably sleeved on the lead screw and the feed bar, the lead screw is rotatably mounted on the base, and the moving base is fixedly connected to the welding gun lifting cylinder through a bolt; the angle-adjustable clamping seat comprises a supporting plate connected to the output end of a piston rod of a welding gun lifting cylinder, a seat body positioned on one side of the supporting plate, a rotating shaft connected to the seat body, a ratchet wheel sleeved on the rotating shaft in a key connection manner, and a limiting clamping piece arranged on one side, far away from the seat body, of the supporting plate in a sliding manner, a welding gun is placed in the seat body, a welding rod is clamped on the welding gun, the rotating shaft penetrates through the supporting plate in a rotating manner, the limiting clamping piece comprises a mounting plate fixed on the supporting plate, a stop pin sliding through the mounting plate, and a spring sleeved on the stop pin, one end of the spring is fixed at the initial end of the stop pin, the other end of the spring is fixed on the mounting plate, the stop pin is pulled to enable the tail end of the stop pin to be far away from the ratchet wheel, so, the welding gun lifting cylinder and the rotating motor are determined according to specification parameters of the electric welding machine 4 and specification ranges of plates to be welded and the like through model selection calculation, the model selection calculation method adopts the prior art, the method is not improved in the application, and details are omitted.

As shown in fig. 7, in order to facilitate control of the welding process of the electric welding machine 4, a controller may be provided, and the controller is electrically connected to the driving motor 1121, the belt conveyor, the telescopic cylinder 316, the lifting cylinder 321, the welding gun lifting cylinder and the rotating motor, and the specific electrical connection structure, connection manner and control principle between the controller and each component are the prior art, and are not improved in this application, and therefore, detailed descriptions thereof are omitted.

Use the utility model provides an electric welding automatic feeding device can carry out a pair of material loading of treating the welded plate respectively by both sides to guarantee the batch and treat the feeding one by one of welded plate group, and can promote a pair of welded plate of treating and be close to in opposite directions, make its weld line just to corresponding 4 belows of electric welding machine. The working process of the feeding device is as follows:

1. screwing an adjusting bolt 1132, changing the distance between the tail end of the gate 1133 and the upper surface of the material guide conveying line 112 to ensure that the height of the plate passing channel 114 meets the passing requirement of a plate to be welded with a corresponding thickness specification, adjusting the position of the plate lifting assembly 115 on the rack 111, namely screwing a locking nut to enable the locking nut to be far away from the side wall of the rack 111, manually rotating a rotating shaft of a gear 1111 to enable the gear 1111 to rotate along with the rotating shaft to stir a rack rod meshed with the gear to move linearly in a sliding channel, so as to change the distance between an inclined cantilever rod and the material guide conveying line 112, realize the distance adjustment between an upper guide plate roller 1153 and a belt pulley 1123, and screwing the locking nut to enable the locking nut to be close to the side wall of the rack 111 after the adjustment is in place, so as to realize the locking of the rotating shaft, meet the stacking requirement of the plate to be welded with the;

2. the stacked plates to be welded are obliquely placed on a belt in the material guide conveying line 112, the driving motor 1121 and the belt conveyor are started to work, so that the driving motor 1121 drives the rotating rod 1122 to rotate, the rotating rod 1122 drives the belt pulley 1123 to rotate, the belt pulley 1123 drives the belt to rotate and move between the belt and the roller 1125, the situation that the lowest plate to be welded is pulled by the belt to be smoothly drawn out from the plate passing channel 114 and conveyed to the auxiliary conveying line 12 is guaranteed, the plate to be welded is conveyed to the welding table 2 by the auxiliary conveying line 12, and the plates to be welded are sequentially loaded on the two sides of the welding table 2 is achieved;

3. the telescopic cylinder 316 and the lifting cylinder 321 are started to work, the lifting cylinder 321 drives the pusher dog 322 to penetrate through the welding table 2, the telescopic cylinder 316 drives the sliding seat 313 fixedly connected with the telescopic cylinder to move along the guide rod 312, so that the connecting rod 315 fixed on the telescopic cylinder can push and pull the swing rod 314 to swing, the swing rod 314 drives the other connecting rod 315 to move, the sliding seat 313 connected with the swing rod is pushed and pulled to move along the guide rod 312, and therefore the two groups of sliding seats 313 move towards each other, the pusher dog 322 can push two plates to be welded to move close to each other at the same time, and the welding line of the two plates is ensured to be positioned below the;

4. starting a welding gun lifting cylinder and a rotating motor to work, so that the welding gun lifting cylinder drives a welding gun placed in a seat body to be close to the welding lines of the two plates, and at the moment, the rotating motor drives a lead screw to rotate, so that a moving seat sleeved on the lead screw and a light bar in a sliding manner moves, and welding is carried out along the welding lines of the two plates;

5. after the welding is completed, the lifting cylinder 321 drives the pusher dog 322 to move away from the working surface of the welding table 2, and the telescopic cylinder 316 drives the two sets of sliding seats 313 to move away from each other, so as to prepare for the next pair of pusher plates of the plates to be welded.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims (10)

1. The utility model provides an electric welding automatic feeding device which characterized in that: electric welding automatic feeding device includes two sets of plate feed mechanism (1) of corresponding setting, is located welding bench (2) between two sets of plate feed mechanism (1) and sets up plate centering mechanism (3) on welding bench (2), plate centering mechanism (3) just to corresponding setting up in electric welding (4) below, and promote two sets of plates by plate centering mechanism (3) and be close to in step mutually.

2. The automatic feeding device of the electric welding machine according to claim 1, characterized in that: the plate feeding mechanism (1) comprises a plate feeding assembly (11) and an auxiliary conveying line (12) located at the output end of the plate feeding assembly (11) one by one, and the output end of the auxiliary conveying line (12) extends to the side of the welding table (2).

3. The automatic feeding device of the electric welding machine according to claim 2, characterized in that: the plate-by-plate feeding assembly (11) comprises a rack (111), a material guide conveying line (112) arranged on the rack (111) in a spanning mode, and an upper plate width limiting brake (113) erected above the material guide conveying line (112), wherein an output end of the material guide conveying line (112) extends to the position above an input end of the auxiliary conveying line (12), and a plate passing channel (114) is formed between the tail end of the upper plate width limiting brake (113) and the upper surface of the material guide conveying line (112).

4. The automatic feeding device of the electric welding machine according to claim 3, characterized in that: the guide conveying line (112) comprises a driving motor (1121) fixed on the rack (111), a rotating rod (1122) connected to the output end of the driving motor (1121), a plurality of groups of belt pulleys (1123) adjacently sleeved on the rotating rod (1122), a supporting rod (1124) corresponding to the rotating rod (1122), a roller (1125) sleeved on the supporting rod (1124), and a belt connected between the belt pulleys (1123) and the roller (1125) in a transmission manner, wherein the rotating rod (1122) and the supporting rod (1124) are rotatably erected between the rack (111), and the roller (1125) is located above the input end of the auxiliary conveying line (12).

5. The automatic feeding device of the electric welding machine according to claim 3 or 4, characterized in that: and a lifting plate assembly (115) is also arranged above the input end of the material guide conveying line (112).

6. The automatic feeding device of the electric welding machine according to claim 3, characterized in that: the upper plate width limiting gate (113) comprises a mounting seat (1131) erected between the racks (111) and a plurality of groups of gates (1133) adjacently connected to the mounting seat (1131) through adjusting bolts (1132), and the adjusting bolts (1132) are used for adjusting the distance from the tail end of the gate (1133) to the upper surface of the material guide conveying line (112).

7. The automatic feeding device of the electric welding machine according to claim 1, characterized in that: the plate centering mechanism (3) comprises a centering assembly (31) arranged on the welding table (2) and a lifting type shifting plate assembly (32) connected to the output end of the centering assembly (31).

8. The automatic feeding device of the electric welding machine according to claim 7, characterized in that: centering subassembly (31) include through three corresponding guide bar (312) of erectting on welding bench (2) of group's supporting seat (311), corresponding slip cap locate two sets of slide (313) on guide bar (312), swing rod (314) that set up on two sets of guide bar (312) intermediate strut seat (311) rotate, articulate connecting rod (315) at swing rod (314) both ends and connect telescopic cylinder (316) between a set of slide (313) and two sets of guide bar (312) intermediate strut seat (311), two sets of guide bar (312) intermediate strut seat (311) are just to answering the electric welding machine, connect over-and-under type group spare (32) are dialled to the lift on slide (313), the one end that swing rod (314) were kept away from in connecting rod (315) articulates on slide (313).

9. The automatic feeding device of the electric welding machine according to claim 8, characterized in that: the telescopic cylinder (316) can be set to be an electric, pneumatic or hydraulic cylinder, and is fixed on a group of sliding seats (313) through bolts, and the output end of a piston rod of the telescopic cylinder is fixed on a middle supporting seat (311) of two groups of guide rods (312).

10. The automatic feeding device of the electric welding machine according to claim 7 or 8, characterized in that: the lifting shifting plate assembly (32) comprises a lifting cylinder (321) fixed on the sliding seat (313) and a shifting claw (322) connected to the output end of a piston rod of the lifting cylinder (321).

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