CN111974895A

CN111974895A - Automatic capping production line after steel drum coating

Info

Publication number: CN111974895A
Application number: CN202010779663.3A
Authority: CN
Inventors: 缪元生; 韩敏
Original assignee: Jiangyin Five Star Welding Copper Co ltd
Current assignee: Jiangyin Five Star Welding Copper Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-11-24

Abstract

The invention discloses an automatic capping production line after steel drum coating, which sequentially comprises a feeding conveying device, a cover removing conveying device, a capping conveying device and a blanking conveying device along the conveying direction of a steel drum; the feeding conveying device conveys the steel drum to the cover removing conveying device; the cover removing and conveying device comprises a steel drum rotating device A and a cover removing device; the upper cover conveying device comprises a steel drum rotating device B, an air exchange device, an upper cover device, an inert gas injection device and a rainproof cover upper cover device; the upper cover conveying device conveys the steel barrel with the upper cover to the blanking conveying device. According to the structure, the automatic capping production line for the coated steel drum realizes the full automation of the capping process of the steel drum after paint spraying, can be directly sold after discharging, effectively reduces the labor cost and improves the production automation and the production line.

Description

Automatic capping production line after steel drum coating

Technical Field

The invention relates to the technical field of an automatic capping production line of a steel drum, in particular to an automatic capping production line after coating of the steel drum.

Background

In the production process of the steel barrel, firstly, a steel plate is rolled into the barrel, then the barrel body is punched, then the barrel bottom and the barrel cover which are formed by bearing the steel plate are fixed with the barrel body, then the steel barrel is painted and dried, and finally the steel barrel is covered.

In the prior steel drum production process, except the capping process, other processes are basically popularized in an automated way. And the upper cover process of steel drum, although there are some automatic upper cover devices too, the automation efficiency of the upper cover of steel drum is lower, and there is not specialized upper cover automation line of steel drum, only there are some automation equipment of the individual process, and each equipment related in the upper cover process of steel drum is because the speed of production differs, can't connect into the production line in unison, even after even linking into the production line, also can be because the process related in the upper cover process is more, involve at least: 1. removing a cover for placing a steel barrel opening during coating, 2 cooling the steel barrel and simultaneously replacing air in the steel barrel, 3 injecting inert gas into the steel barrel to facilitate later detection of the sealing performance of the steel barrel, 4 installing a large opening cover and a small opening cover of the steel barrel, and 5 installing a rain-proof cover of the small opening cover of the steel barrel; the efficiency of a certain process is low, which results in low production efficiency of the whole production line. Therefore, no production line with relatively high production efficiency and high automation degree is available in the market at present for automatic cover feeding production after steel drum coating.

Disclosure of Invention

The invention aims to: the automatic capping production line overcomes the defects of the prior art, realizes the full automation of the capping process of the steel drum after paint spraying, can be directly sold after discharging, effectively reduces the labor cost, and improves the automation and the pipelining of the production; through the action of the feeding conveying device, the automatic feeding of the upper cover production line can be realized, and the automatic feeding of two upper cover production lines can be simultaneously met, so that the production efficiency is further improved, and the labor intensity is reduced; through the action of the transition conveying device, the situation that the subsequent production rhythm is influenced due to too fast and excessive conveying of the steel drum of the feeding conveying device can be avoided; through the action of the uncovered conveying device, the cover of the opening of the steel drum used in paint spraying is removed before the steel drum is covered, so that the subsequent covering operation of the drum cover is facilitated, and the removed cover is convenient to recover; through the effect of the upper cover conveying device, the stations of the steel drums can be saved, the upper cover time of a single steel drum is shortened, and the production efficiency of the single steel drum is improved.

The technical scheme adopted by the invention is as follows:

the automatic upper cover production line after the steel drum is coated sequentially comprises a feeding conveying device, a cover removing conveying device, an upper cover conveying device and a blanking conveying device along the conveying direction of the steel drum;

the feeding conveying device conveys the steel barrel to the cover removing conveying device;

the cover removing and conveying device comprises a steel barrel rotating device A and a cover removing device, the steel barrel rotating device A rotates the large barrel opening and the small barrel opening at the top of the steel barrel to be matched with the cover removing device, the cover removing device separates a cover covering the large barrel opening and the small barrel opening at the top of the steel barrel from the steel barrel, and the cover removing and conveying device conveys the steel barrel with the cover removed to the upper cover conveying device;

the upper cover conveying device comprises a steel drum rotating device B, an air interchanger, an upper cover device, an inert gas injection device and a rainproof cover upper cover device, the steel barrel rotating device B rotates the big barrel opening and the small barrel opening at the top of the steel barrel to be matched with the air exchange device, the upper cover device, the inert gas injection device and the rain-proof cover upper cover device, the air ventilation device extends into the steel drum from a large drum opening or a small drum opening at the top of the steel drum to inject air into the steel drum, the upper cover device firstly covers the small drum opening at the top of the steel drum, then an inert gas injection device extends into the steel drum from the large drum opening at the top of the steel drum to inject inert gas into the steel drum, the upper cover device covers the large drum opening at the top of the steel drum filled with the inert gas, and the rain-proof cover upper cover device fixes the rain-proof cover with the small bucket mouth, and the upper cover conveyer conveys the steel bucket completing the upper cover to the blanking conveyer.

The invention further improves the scheme that a transition conveying device is connected between the feeding conveying device and the cover removing conveying device, the transition conveying device conveys the steel barrel of the feeding conveying device to the cover removing conveying device, a steel barrel limiting device is arranged on the transition conveying device, and the position of the steel barrel limiting device of the transition conveying device is connected with the cover removing conveying device through a barrel conveying frame A.

According to a further improved scheme of the invention, the transition conveying device comprises side frames B, two sides of each side frame B are arranged in parallel, a plurality of conveying rotary rollers B are uniformly distributed among the side frames B along the side frames B, and the conveying rotary rollers B are synchronously and synchronously connected with the side frames B in a rotating mode at the same speed through a transmission device B and a driving motor B fixed on the transition conveying device.

According to a further improved scheme of the invention, the steel drum limiting device comprises swing rods A symmetrically arranged on side frames B at two sides, the middle parts of the swing rods A are horizontally in swing connection with the corresponding side frames B through vertical shafts A, one ends of the swing rods A facing the cover removing and conveying device are provided with limiting vertical rollers rotatably connected around the vertical shafts B, the other ends of the swing rods A are in swing connection with the end parts of piston rods D of pistons D, the pistons D are in swing connection with the corresponding side frames B through swing frames, and the swing frames are fixed on the side frames B;

when the piston rod D extends out of the piston D, the swing rod A drives the limiting rollers to swing oppositely to the maximum stroke, and the distance between the limiting rollers is smaller than the diameter of the steel drum; when the piston rod D retracts to the piston D, the swing rod A drives the limiting rollers to swing back to the maximum stroke, and the distance between the limiting rollers is larger than the diameter of the steel drum.

According to a further improved scheme of the invention, the barrel conveying frame A comprises a parallel frame A fixed between the transition conveying device and the uncovering conveying device, rails A arranged along the parallel frame A are respectively fixed at the tops of the parallel frame A, a sliding seat B capable of reciprocating along the rails A is arranged on the rails A, the sliding seat B is fixedly connected with a piston rod E of a piston E fixed on the parallel frame A, a supporting plate A is vertically and movably connected at the top of the sliding seat B through a piston F, and the piston F is fixed on the sliding seat B, and the piston rod F of the piston F is fixed with the supporting plate A.

According to a further improvement scheme of the invention, when the piston rod E retracts to the maximum stroke position of the piston E, the support plate A is positioned at the position below the steel drum limited by the steel drum limiting device; when the piston rod E extends out of the piston E to the maximum stroke position, the supporting plate A is positioned on the uncapping conveying device; when the piston rod F extends out of the piston F to the maximum stroke, the top surface of the supporting plate A is higher than the height of the contact part of the steel barrel and the cover removing and conveying device and the top of the conveying roller B; when the piston rod F retracts to the maximum stroke position of the piston F, the top surface of the supporting plate A is lower than the height of the contact part of the steel drum and the uncapping conveying device and the top of the conveying roller B.

According to a further improvement of the invention, the parallel frames A are located between the side frames B, and the width of the sliding seat B and the width of the supporting plate A are both smaller than the distance between the side frames B.

According to a further improved scheme of the invention, a plurality of parallel conveying side rollers are further arranged between the side frame B and the support plate A along the conveying direction of the transition conveying frame, the conveying side rollers are rotatably connected with the side frame B, the tops of the conveying side rollers are flush with the tops of the conveying rotating rollers, and the conveying side rollers and the conveying rotating rollers are synchronously connected in a synchronous and same-speed transmission manner.

According to a further improved scheme of the invention, the feeding conveying frame comprises side frames A arranged in parallel at two sides, a plurality of conveying rotary rollers A are uniformly distributed between the side frames A along the side frames A, and the conveying rotary rollers A are synchronously and synchronously connected with the side frames A in a rotating mode at the same speed through a transmission device A and a driving motor A fixed on the feeding conveying device.

According to a further improvement scheme of the invention, the tail end of the feeding conveying frame is connected with one side of the starting end of the transition conveying frame, the feeding conveying frame and the transition conveying frame are vertically arranged, a notch B matched with the feeding conveying frame is formed in a side frame B on one side of the transition conveying frame, the top of the side frame B and the position, close to the uncapping conveying device, of the notch B are provided with guide rollers horizontally rotating around a vertical shaft C, and the distance between the rim edge of each guide roller and the side frame B on the other side and the distance between the side frames A on the side far away from the guide rollers are larger than or equal to the diameter of the steel drum.

According to a further improvement scheme of the invention, a notch A for connecting a standby upper cover production line is further arranged on a side frame A of the feeding conveying frame close to one side of the cover removing conveying device, a sliding seat A which axially reciprocates along a conveying rotating roller A is arranged at the bottom of the feeding conveying frame and at the position of the notch A, a plurality of material pushing vertical rods are movably connected to the top of the sliding seat A up and down, the material pushing vertical rods are located between two adjacent conveying rotating rollers A, the distance between the two adjacent material pushing vertical rods is smaller than the diameter of a steel barrel, the material pushing vertical rods are fixed to the end portions of piston rods B of pistons B, the pistons B are fixed on the sliding seat A, and the sliding seat A is fixedly connected with the piston rods A of the pistons A fixed on the feeding conveying frame.

According to a further improvement scheme of the invention, when the piston rod A retracts to the maximum stroke position of the piston A, the material pushing vertical rod is positioned in the position of the side frame A far away from the side of the notch A in the material loading and conveying frame, and the distance between the material pushing vertical rod and the notch A is larger than or equal to the diameter of the steel barrel; when the piston rod A extends out of the piston A to the maximum stroke, the material pushing upright rod is positioned in the side frame A close to the side of the notch A in the material loading and conveying frame; when the piston rod B retracts to the maximum stroke position in the piston B, the top of the material pushing upright rod is lower than that of the conveying roller A; when the piston rod B extends out of the piston B to the maximum stroke, the top of the material pushing upright rod is higher than that of the conveying roller A.

According to a further improvement scheme of the invention, in the gaps between every two adjacent conveying rollers A, a guide baffle is arranged in the gap which is located in the range of the notch A and is closest to the transition conveying frame, the guide baffle is movably connected up and down through a piston C, the piston C is fixed on the feeding conveying frame and is located below the conveying rollers A, and one side of the guide baffle facing the notch A extends to the side frame A on the side of the notch A.

According to a further improved scheme of the invention, the guide baffle is fixed at the end part of a piston rod C of the piston C; when the piston rod C retracts to the maximum stroke position of the piston C, the top of the guide baffle is lower than the top of the conveying roller A; when the piston rod C extends out of the piston C to the maximum stroke, the top of the guide baffle is higher than the top of the conveying roller A.

According to a further improved scheme of the invention, the cover removing and conveying device comprises two conveying chains A which are arranged in parallel, two ends of each conveying chain A are respectively in transmission connection with a chain wheel A, each chain wheel A is in rotary connection with the cover removing and conveying device, a driving wheel B is coaxially and fixedly connected with the chain wheel A at one end, the cover removing and conveying device is also in rotary connection with a driving wheel A in transmission connection with the driving wheel B, the driving wheel A is in transmission connection with a driving motor C fixed on the cover removing and conveying device through a transmission device C, the distance between the conveying chains A is smaller than the diameter of a steel barrel, and the conveying chains A are symmetrically positioned on two sides of a barrel conveying frame A.

The invention has the further improvement scheme that a horizontal supporting rod is fixed at the top of the de-cover conveying device and between two chain wheels A corresponding to the same conveying chain A, and the horizontal supporting rod is fixed on the de-cover conveying device through an L-shaped vertical rod; the transmission chain A wound on the upper part of the chain wheel A is placed on the horizontal support rod.

According to a further improved scheme of the invention, the cover removing and conveying device further comprises a cover removing device arranged between the two chain wheels A and above the conveying chain A and a steel drum rotating device A arranged on one side, facing the feeding and conveying device, of the cover removing device.

According to a further improved scheme of the invention, the cover removing device comprises a portal frame fixed on the cover removing conveying device, the conveying chain A penetrates through the portal frame, magnetic blocks are respectively arranged on two sides of the top in the portal frame, the magnetic blocks horizontally reciprocate along the conveying direction perpendicular to the chain A, the magnetic blocks vertically reciprocate, cover falling pipes are fixedly arranged on two sides of the portal frame, a sensor B is further downwards arranged at the rear end of the top of the portal frame, a sensor C matched with the steel barrel rotating device A is further arranged on one side of the front end of the top of the portal frame, and the distance between the sensor C and the axis of a steel barrel at the position of the steel barrel rotating device A is larger than the maximum distance between the edge of a small opening at the top of the steel barrel and the axis of the steel barrel and smaller than the maximum distance between the edge of a large opening at the top of the steel barrel and the axis of the steel; the moving range of the magnetic block under the action of the corresponding piston E passes through the cover dropping pipe on the corresponding side, the feed port of the cover dropping pipe is upward, the height of the edge of the feed port on the side, facing the conveying chain A, of the cover dropping pipe is lower than the height of the edge of the feed port on the side, facing away from the conveying chain A, of the cover dropping pipe, and when the magnetic block moves inwards to the maximum stroke position, the magnetic block is respectively positioned above the corresponding barrel opening of the steel barrel; when the magnetic block moves outwards to the maximum stroke position, the magnetic block is positioned on the outer side of the corresponding cover dropping pipe; when the magnetic block moves downwards to the maximum stroke, the magnetic force of the magnetic block attracts the cover cap at the position, corresponding to the bucket opening, of the steel bucket; when the magnetic block moves upwards to the maximum stroke position, the height of the bottom of the cover cap adsorbed by the bottom of the magnetic block is positioned between the heights of the edges of the two sides of the feeding hole of the cover dropping pipe.

According to a further improvement scheme of the invention, the magnetic block on each side is respectively fixed at the end part of a piston rod D of a piston D on the corresponding side, the piston rod D extends downwards out of the piston D, the piston D is fixed at the end part of a piston rod E of a piston E on the corresponding side, the piston D drives the magnetic block to reciprocate up and down, the piston E drives the magnetic block to horizontally reciprocate perpendicular to the conveying direction of the conveying chain A, the pistons E are respectively fixed at the top of the portal frame, and the movable range of the magnetic block under the action of the corresponding piston E passes through the cover falling pipe on the corresponding side.

According to a further improvement of the invention, a sliding frame connected in a sliding manner along the lateral direction of the top of the portal frame is arranged at the top in the portal frame, the sliding frame is fixed at the end part of a piston rod E of the piston E, and the piston D is fixed on the sliding frame.

In a further improvement of the invention, the sliding frame reciprocates along a horizontal sliding rail A arranged at the top of the portal frame.

According to a further improvement scheme of the invention, the lower discharging section of the cover dropping pipe is inclined along a direction from top to bottom and away from the portal frame, and the bottom of the discharging section is a discharging opening.

According to a further improved scheme of the invention, the steel drum rotating device A comprises a rotating base A fixed on the cover removing conveying device, the rotating base A is located below the upper half part of the conveying chain A, clamping bases A are respectively arranged on the rotating base A and correspondingly located on the outer side of the conveying chain A, clamping rollers A which are horizontally and rotatably connected around a vertical shaft are respectively arranged at the front end and the rear end of the edge of one side, facing the conveying chain A, of the top of each side clamping base A, the positions of the clamping rollers A on the two sides correspond to each other, the clamping rollers A of the clamping bases A on one side provide driving force through a driving motor D fixed on the clamping bases A, a sensor A is arranged between the conveying chains A on the top of the rotating base A, and the top of the sensor A is lower than the top of the conveying chain A.

According to a further improved scheme of the invention, the clamping seat A respectively performs horizontal reciprocating movement which is vertical to the conveying direction of the conveying chain A relative to the rotating base A through a piston F, and the piston F is fixed on the rotating base A; when the clamping seat A moves back to the maximum stroke, the distance between the clamping rollers A corresponding to the two sides is larger than the diameter of the steel drum; when the clamping seats A move to the maximum stroke position oppositely, the distance between the clamping rollers A corresponding to the two sides is smaller than the diameter of the steel drum.

According to a further improved scheme of the invention, a horizontal sliding rail B is fixed on the rotating base A along the moving direction of the clamping base A, and the clamping base A and the rotating base A reciprocate along the horizontal sliding rail B.

According to a further improved scheme of the invention, the cover removing and conveying device is connected with the upper cover conveying device through a barrel conveying frame B, the barrel conveying frame B comprises a parallel frame B fixed between the cover removing and conveying device and the upper cover conveying device, the tops of the parallel frame B are respectively fixed with a track B arranged along the parallel frame B, a sliding seat C which reciprocates along the track B is arranged on the track B, the sliding seat C is fixedly connected with a piston rod G of a piston G fixed on the parallel frame B, the top of the sliding seat C is vertically and movably connected with a supporting plate B through a piston H, and the piston H is fixed on the sliding seat C, and the piston rod H of the piston H is fixed with the supporting plate B.

According to a further improvement of the invention, when the piston rod G retracts to the maximum stroke position of the piston G, the support plate B is positioned below the steel drum at the tail end of the uncovering conveying device; when the piston rod G extends out of the piston G to the maximum stroke, the supporting plate B is positioned at the position of a steel drum rotating device B of the upper cover conveying device; when the piston rod H extends out of the piston H to the maximum stroke, the top surface of the supporting plate B is higher than the height of the contact part of the steel drum and the uncovering conveying device and the height of the contact part of the steel drum and the upper cover conveying device; when the piston rod H retracts to the maximum stroke position of the piston H, the top surface of the supporting plate B is lower than the height of the contact part of the steel drum and the uncovering conveying device and the height of the contact part of the steel drum and the upper cover conveying device.

In a further development of the invention, the parallel frame B is located between the side frames B and the support plate B is located between two parallel conveyor chains a.

In a further improved scheme of the invention, the upper cover conveying device is movably connected with a steel barrel stepping conveying device, the steel drum stepping conveying device simultaneously conveys the steel drum positioned on the steel drum rotating device B, the steel drum positioned on the air interchanger, the steel drum positioned on the upper cover device and the steel drum positioned on the rain-proof cover upper cover device to the position of the air interchanger, the position of the upper cover device, the position of the rain-proof cover upper cover device and the position of a conveying chain B correspondingly, two conveying chains B are arranged in parallel, the symmetrical axes of the upper cover conveying device are axisymmetric and are positioned between the upper cover conveying device and the discharging conveying device, the transmission chain B is wound on a transmission wheel C which is rotationally connected on the upper cover transmission device, the upper cover conveying device is also provided with a driving motor F, and the driving motor F is in transmission connection with the driving wheel C.

According to a further improvement scheme of the invention, the steel drum stepping conveying device comprises a pair of parallel rotating rods arranged along the conveying direction of the steel drum of the upper cover conveying device, the parallel rotating rods are in sliding connection with two rails C arranged in parallel along the conveying direction of the steel drum at the top of the upper cover conveying device through sliding frames, the parallel rotating rods are in rotating connection with the sliding frames around the axes of the parallel rotating rods through driving motors E fixed to the upper cover conveying device, a plurality of groups of limiting convex rods are sequentially and uniformly distributed at the tops of the parallel rotating rods along the length direction of the parallel rotating rods, each group of limiting convex rods are matched with the bottom of the steel drum, conveying chains B are positioned between the rails C, a driving motor G is further fixedly arranged on the upper cover conveying device, and the driving motor G drives the steel drum stepping conveying device to move along a horizontal sliding rail C.

According to a further improved scheme of the invention, the limiting convex rod is fixedly connected with the parallel rotating rod through a strip-shaped connecting piece, and the length direction of the strip-shaped connecting piece is parallel to the parallel rotating rod.

According to a further improved scheme of the invention, each group of limiting convex rods comprises four limiting convex rods, and two limiting convex rods are symmetrically arranged on each side of the parallel rotating rod respectively; when the first group of limiting convex rods along the conveying direction of the steel drum is correspondingly positioned on the steel drum rotating device B, the air ventilation device, the upper cover device and the rain-proof cover upper cover device are respectively provided with a corresponding group of limiting convex rods; when the first group of limiting convex rods along the conveying direction of the steel drum are correspondingly positioned on the air exchange device, the upper cover device, the rain-proof cover upper cover device and the discharging conveying device are respectively provided with a corresponding group of limiting convex rods.

According to a further improved scheme of the invention, the parallel rotating rods are composed of a plurality of rotating rod units which are connected end to end, the limiting convex rods are respectively and fixedly connected with the rotating rod units, two adjacent rotating rod units are connected through a transmission connecting seat, the rotating rod units are respectively and rotatably connected with a supporting vertical frame arranged at the top of a base of the connecting seat, and the transmission connecting seat is in sliding connection with the upper cover conveying device through a track C.

According to a further improved scheme of the invention, the limiting convex rod is fixedly connected with the rotating rod unit through a strip-shaped connecting piece, and the length direction of the strip-shaped connecting piece is parallel to the rotating rod unit.

According to a further improved scheme of the invention, the transmission connecting seat comprises a connecting seat bottom plate connected with the track C, a piston I is fixed on the connecting seat bottom plate, the end part of a piston rod I of the piston I is respectively and synchronously connected with a rotating rod unit connected with the transmission connecting seat through a connecting rod transmission mechanism movably connected to the connecting seat bottom plate in a transmission manner, and when the piston rod I extends out of the piston I to the maximum stroke position, the rotating rod unit drives a limiting convex rod to rotate outwards until the limiting convex rod and the rotating rod unit are positioned in the same horizontal plane or the convex rod is positioned at the lower side of the rotating rod unit; when the piston rod I retracts to the maximum stroke position of the piston I, the rotating rod unit drives the limiting convex rod to rotate upwards to be vertical.

According to a further improved scheme of the invention, a connecting seat top plate is fixed above the connecting seat bottom plate through a supporting vertical frame, the connecting seat top plate is fixed with the top of the supporting vertical frame, the piston I and the connecting rod transmission mechanism are respectively positioned between the connecting seat top plate and the connecting seat bottom plate, and the top surface of the connecting seat top plate is flush with the top of the rotating rod unit.

According to a further improved scheme of the invention, a transmission box is fixed at the bottom of one of the transmission connecting seats, a nut pair A is rotationally connected in the transmission box, the nut pair A is in transmission connection with a transmission lead screw A coaxially fixed with an output shaft of a driving motor G, and two ends of the transmission lead screw A are rotationally connected with an upper cover conveying device through a bearing seat.

In a further improvement of the invention, a horizontal connecting rod is fixedly connected between the connecting seat base close to the end part of the horizontal rotating rod and the sliding frame at the corresponding end.

In a further improvement scheme of the invention, handrails are respectively and symmetrically fixedly connected to two sides of the top of the upper cover conveying device at positions corresponding to the positions from the air ventilating device to the rain-proof cover upper cover device along the conveying direction of the steel drum of the upper cover conveying device.

In a further improvement of the invention, the bottom of the supporting leg of the upper cover conveying device is also provided with an adjusting foot support.

According to a further improvement scheme of the invention, the steel drum rotating device B comprises rotating bases B which are symmetrically fixed on the upper cover conveying device and located on two sides of the horizontal sliding rail C, clamping bases B are respectively arranged on the rotating bases B and correspondingly located on the outer side of the steel drum stepping conveying device, clamping rollers B which are horizontally and rotatably connected around a vertical shaft are respectively arranged at the front end and the rear end of the edge of the top of each side clamping base B facing one side of the steel drum stepping conveying device, the positions of the clamping rollers B on the two sides correspond to each other, and the clamping rollers B of the clamping base B on one side provide driving force through a driving motor H fixed on the clamping bases B.

According to a further improved scheme of the invention, the clamping seat B respectively performs horizontal reciprocating movement which is vertical to the conveying direction of the steel drum relative to the rotating base B through a piston J, and the piston J is fixed on the rotating base B; when the clamping seat B moves back to the maximum stroke, the distance between the corresponding clamping rollers B at two sides is larger than the diameter of the steel drum; when the clamping seats B move to the maximum stroke position in opposite directions, the distance between the corresponding clamping wheels B at the two sides is smaller than the diameter of the steel drum.

According to a further improvement scheme of the invention, a horizontal sliding rail D is fixed on the rotating base B along the moving direction of the clamping base B, and the clamping base B reciprocates with the rotating base B along the horizontal sliding rail D.

According to a further improved scheme of the invention, the air ventilation device, the upper cover device and the rain-proof cover upper cover device are all arranged at the top of the top frame, supporting legs of the top frame are symmetrically arranged at two sides of the upper cover conveying device, the top of the top frame is also provided with a sensor D and a steel barrel opening positioning device A which are matched with the steel barrel rotating device B, the number of the air ventilation device is two in sequence along the conveying direction of the steel barrels on the upper cover conveying device, and the number of the upper cover device is two in sequence along the conveying direction of the steel barrels on the upper cover conveying device; one side of the top frame is further provided with a placing table, and a small bucket opening cover feeding device and a large bucket opening cover feeding device which are correspondingly connected with the upper cover device and a rain cover feeding device which is correspondingly connected with the rain cover upper cover device are fixed on the placing table.

The sensor D is matched with the steel drum rotating device B and is positioned on one side, facing the uncovering conveying device, of the steel drum rotating device B;

the steel drum bung hole positioning device A is matched with the previous air interchanger, and corresponds to the steel drum positioned at the position of the previous air interchanger; and at the moment, the former air ventilation device corresponds to the small barrel opening of the steel barrel at the position;

the latter air ventilation device is matched with the former upper cover device and corresponds to the steel drum positioned at the former upper cover device; the latter air interchanger corresponds to the large barrel opening of the steel barrel at the position, and the former upper cover device corresponds to the small barrel opening of the steel barrel at the position;

the inert gas injection device corresponds to the large barrel opening of the steel barrel at the position;

the last upper cover device is matched with the rain-proof upper cover device, the last upper cover device corresponds to the large barrel opening of the steel barrel at the position, and at the moment, the rain-proof upper cover device corresponds to the small barrel opening of the steel barrel at the position.

According to a further improved scheme of the invention, the sensor D is fixed at the end part of a piston rod K of the piston K through the mounting connecting plate A, the piston rod K extends downwards out of the piston K, the piston K is fixed on the top frame, and the distance between the sensor D and the axis of the steel drum at the position of the steel drum rotating device B is greater than the maximum distance between the edge of a small opening at the top of the steel drum and the axis of the steel drum and is less than the maximum distance between the edge of a large opening at the top of the steel drum and the axis of the steel drum;

when the piston rod K extends out of the piston K to the maximum stroke, the sensor D works; when the piston rod K retracts to the maximum stroke position of the piston K, the sensor D stops working.

In a further improvement of the invention, the piston K is fixed to a mounting plate fixed to the top frame by an adjusting transverse plate.

According to a further improved scheme of the invention, the steel barrel opening positioning device A comprises two groups of clamps which are movably connected between the top frame and the upper cover conveying device up and down and are respectively matched with the outer side wall of the large barrel opening and the outer side wall of the small barrel opening on the top of the steel barrel, the clamps are respectively and fixedly connected with the end part of a piston rod L of a piston L, the piston L is fixed on the top frame, and the piston rod L extends out of the piston L downwards;

when the piston rod L extends out of the piston L to the maximum stroke position, the height of the clamp is matched with the height of the steel barrel opening, and when the piston rod L retracts to the maximum stroke position, the height of the clamp is higher than the top of the steel barrel opening.

According to a further improvement scheme of the invention, the air ventilation device comprises a compressed air pipe fixed at the end part of a piston rod M, the piston rod M extends downwards out of a piston M, and the piston M is fixed on the top frame through a mounting bracket A;

when the piston rod M extends out of the piston M downwards to the maximum stroke, the bottom opening of the compressed air pipe extends into the steel barrel from the barrel opening of the steel barrel, and the compressed air inlet device communicated with the compressed air pipe is used for air inlet; when the piston rod M retreats upwards to the maximum stroke position of the piston M, the compressed air inlet device communicated with the compressed air pipe stops air inlet, and the bottom end of the compressed air pipe is higher than the barrel opening of the steel barrel.

According to a further improved scheme of the invention, the inert gas injection device comprises an inert gas pipe fixed at the end part of a piston rod N, the piston rod N extends downwards out of a piston N, and the piston N is fixed on a top frame through a mounting frame B;

when the piston rod N extends downwards out of the piston N to the maximum stroke position, the bottom opening of the inert gas pipe extends into the steel barrel from the large barrel opening of the steel barrel, and the inert gas inlet device communicated with the inert gas pipe is used for gas inlet; when the piston rod N retracts upwards to the maximum stroke position, the inert gas inlet device communicated with the inert gas pipe stops gas inlet, and the bottom end of the inert gas pipe is higher than the barrel opening of the steel barrel.

According to a further improved scheme of the invention, the inert gas pipe is fixed with the end part of the piston rod N through a mounting connecting plate B, the mounting connecting plate B is positioned below the mounting rack B, the top of the mounting connecting plate B is also upwards fixedly provided with a guide rod A, and the guide rod A upwards penetrates through a guide pipe A arranged on the mounting rack B.

According to a further improvement scheme of the invention, the small bucket opening cover feeding device or the large bucket opening cover feeding device and the upper cover device, and the rain cover feeding device and the rain cover upper cover device are connected through feeding devices.

According to a further improved scheme of the invention, the feeding device comprises a conveyor belt which is in driving connection through a driving motor J, the conveyor belt is movably connected with a feeding frame of the feeding device, one end of the feeding frame is fixed with a top frame, and the other end of the feeding frame is communicated and fixed with a discharge hole of a small bucket opening cover feeding device, a big bucket opening cover feeding device or a rainproof cover feeding device; a limiting baffle is fixed at the tail end of the feeding belt of the feeding frame, a material pushing block perpendicular to the conveying direction of the conveying belt is arranged on the feeding frame and on one side, facing the feeding end of the feeding frame, of the limiting baffle, the material pushing block is fixedly connected to the end portion of a piston rod R of a piston R, the piston R is fixed on one side of the feeding frame, a feeding groove matched and communicated with the conveying belt is formed in the position, corresponding to the material pushing block, of the other end, opposite to the piston R, of the feeding frame, and the conveying belt is communicated with the barrel cover placing groove through the feeding groove;

the feeding end of the feeding frame is fixed on the small barrel opening cover feeding device, the big barrel opening cover feeding device or the rain cover feeding device through the supporting plate C, and the discharging end of the feeding frame is fixed with the top frame through the mounting connecting plate D;

the barrel cover placing groove comprises two oppositely arranged groove lobes, the groove lobes are fixedly connected to the end part of a piston rod Q of a piston Q, and the piston Q is fixed to the bottom frame of the lifting frame B; when the piston rod Q extends out of the piston Q to the maximum stroke position, the groove petals move oppositely to be in contact with each other, and at the moment, the groove petals form a barrel cover placing groove.

According to a further improved scheme of the invention, a material poking rod is further arranged at a position, between the conveying belt and the material pushing block, of the feeding frame, the material poking rod is connected to the feeding frame through a piston S in a swinging mode, the piston S is connected with the feeding frame in a swinging mode, and the end part of a piston rod S of the piston S is connected with the material poking rod;

when the piston rod S retracts to the maximum stroke position of the piston S, the material stirring rod forwards stirs a barrel cover or a rain cover positioned at the material stirring rod position on the conveyor belt along the conveying direction of the conveyor belt; when the piston rod S extends out of the piston S to the maximum stroke position, the material poking rod pokes the barrel cover or the rain cover on the side, back to the material pushing block, of the material poking rod on the conveying belt back to the direction opposite to the conveying direction of the conveying belt.

According to a further improved scheme of the invention, the two sides of the feeding frame, which are positioned at the top of the conveying belt, are symmetrically provided with limiting guide grooves corresponding to the edges of the barrel cover or the rain cover.

In a further improved scheme of the invention, the support plate C comprises two L-shaped support plate units, strip-shaped through holes are correspondingly arranged between the two L-shaped support plate units, and the strip-shaped through holes are fixed through fixing bolts.

According to a further improved scheme of the invention, the upper cover device comprises a cover taking device which is movably connected to the top frame and used for grabbing the barrel cover, and the top of the cover taking device is in transmission connection with a rotating shaft of the driving motor I through a transmission device D;

the driving motor I is fixed on a lifting frame A, and the lifting frame A is fixed at the end part of a piston rod O of a piston O;

the piston O is fixed on a lifting frame B, and the lifting frame B is fixed at the end part of a piston rod P of the piston P; the lifting frame A is movably connected in the lifting frame B up and down;

the piston P is fixed in the door-shaped frame, the door-shaped frame is fixed at the top of the top frame through the mounting substrate A, and the lifting frame B is movably connected in the door-shaped frame up and down;

the piston rod O extends downwards out of the piston O, the piston O is fixed in the lifting frame B, and the lifting frame A moves up and down along the lifting frame B under the action of the piston O in the lifting frame B;

the piston rod P extends out of the piston P downwards, the piston P is fixed on the door-shaped frame, and the lifting frame B moves up and down along the door-shaped frame under the action of the piston P in the door-shaped frame;

when the piston rod O returns upwards to the maximum stroke position and the piston rod P returns upwards to the maximum stroke position, the cover taking device is positioned above the barrel cover placing groove; when the piston rod O extends out of the piston O downwards to the maximum stroke position and the piston rod P retracts back upwards to the maximum stroke position, the cover taking device is positioned at the position of the barrel cover placing groove; when the piston rod O retracts upwards to the maximum stroke position and the piston rod P extends downwards to the maximum stroke position, the cover taking device is positioned above the opening of the steel drum at the corresponding position on the upper cover conveying device; when the piston rod O extends downwards to the maximum stroke position and the piston rod P extends downwards to the maximum stroke position, the height of the cover taking device is lower than that of the opening of the steel drum at the corresponding position on the upper cover conveying device.

According to a further improved scheme of the invention, an opening is formed in the middle of a bottom frame of the lifting frame B, and the groove flaps are respectively positioned on the bottom frames at two sides of the opening;

when the piston rod Q retracts to the maximum stroke position of the piston Q, the distance between the groove lobes is larger than the diameter of the cap taking device.

According to a further improved scheme of the invention, positioning grooves matched with the barrel cover are arranged under the barrel cover placing groove corresponding to the cover taking device, positioning grooves are symmetrically arranged on opposite surfaces of the groove flaps, and when the groove flaps extend out of the piston Q to the maximum stroke position, the positioning grooves are correspondingly spliced to form positioning grooves.

According to a further improved scheme of the invention, a guide rod B is fixed in the lifting frame B and positioned at the top edge of the lifting frame B, a matched guide pipe B is arranged on the top frame of the lifting frame A corresponding to the guide rod B, and the guide rod B penetrates through the guide pipe B and extends into the lifting frame A.

According to a further improved scheme of the invention, two side walls in the door-shaped frame are symmetrically provided with tracks D extending in the up-down direction, and the lifting frame B is respectively and fixedly provided with matched slide blocks A corresponding to the tracks D.

The invention further improves the scheme that the mounting connecting plate D is fixed on the top frame through a mounting base plate A, the upper cover device also comprises a steel barrel opening positioning device B, the steel barrel opening positioning device B is movably connected to the bottom of the mounting connecting plate E and is positioned under the cover taking device, the mounting connecting plate E is movably connected to the lower part of the mounting connecting plate D up and down through a piston T, the piston T is fixed on the mounting connecting plate D, the end part of a piston rod T of the piston T extends out of the piston T downwards and is fixed with the mounting connecting plate E, the steel barrel opening positioning device B comprises two oppositely arranged clamping flaps A, the clamping flaps A are respectively and fixedly connected to the end part of a piston rod U of the piston U, the piston U is fixed on the mounting connecting plate E, the steel barrel opening positioning device B is correspondingly positioned under the cover taking device, and barrel opening positioning grooves are symmetrically arranged on the opposite surfaces of the clamping flaps A, when the clamping flap A extends out of the piston U to the maximum stroke position of the piston rod U, the bung hole positioning grooves are correspondingly spliced to form a bung hole positioning groove; when the clamping flaps A are at the position where the piston rod exits the piston U to the maximum stroke, the distance between the clamping flaps A is larger than the diameter of the opening of the steel barrel.

According to a further improved scheme of the invention, a guide rod C is fixed at the top of the mounting connecting plate E, a matched guide pipe C is arranged on the mounting base plate A corresponding to the guide rod C, and the guide rod C penetrates through the mounting base plate A upwards through the guide pipe C.

In a further improved scheme of the invention, the rain-proof cover taking device comprises a rain-proof cover taking device movably connected below a rain-proof cover top frame and a steel barrel opening positioning device C, the rain-proof cover taking device is fixed at the end part of a piston rod V of a piston V, the piston rod V extends downwards to form a piston V, the piston V is fixed at the end part of a piston rod W of the piston W, the piston rod W extends downwards to form a piston W, the piston W is fixed at the bottom of a movable frame, the movable frame is fixed with a nut pair B, the movable frame is in transmission connection with a transmission lead screw B which is rotatably connected with the rain-proof cover top frame through the nut pair B, the transmission lead screw B provides driving force through a driving motor K which is fixed at the rain-proof cover top frame, the rain-proof cover taking device performs reciprocating movement between a delivery end of a conveying device of the rain-proof cover feeding device and the steel barrel opening positioning, the rain-proof cover upper cover top frame is fixedly connected with the top frame; the steel drum bung hole positioner C includes two clamp lamella B that set up relatively, clamp lamella B is fixed connection in piston X's piston rod X tip respectively, piston X is fixed in erection joint board F respectively, erection joint board F is fixed in piston Y's piston rod Y tip, piston rod Y stretches out piston Y downwards, piston Y passes through mounting substrate B and is fixed with the roof-rack.

In a further development of the invention, the piston W is fixed to the movable frame via a mounting base plate C.

According to a further improved scheme of the invention, the bottom of the upper cover frame of the rain cover is fixedly connected with a track E along the horizontal moving direction of a moving frame, and the moving frame is provided with a matched sliding block B corresponding to the track E.

According to a further improved scheme of the invention, the feeding groove penetrates through the bottom of the groove flap and is then fixedly provided with a limiting stop, a position, corresponding to the position of the groove flap, of the groove bottom of the feeding groove is provided with a rain cover positioning tray matched with a rain cover, the rain cover positioning tray is fixedly connected to the end part of a piston rod Z of a piston Z, the piston rod Z extends upwards out of the piston Z, and the piston Z is fixed at the bottom of the feeding groove;

when the piston rod Z retracts to the position of the maximum stroke, the rain cover positioning tray is matched with the feeding groove; when the piston rod Z extends out of the piston Z to the maximum stroke position, the height of the rain cover positioning tray is upwards lifted to be matched with the height of the rain cover taking device when the piston rod W returns to the maximum stroke position and the piston rod V extends out of the maximum stroke position of the piston V.

According to a further improved scheme of the invention, the lower part of the feeding device corresponding to the rain-proof cover upper cover device is also fixedly connected with a reinforced connecting plate, one end of the reinforced connecting plate is fixed with the supporting plate C, and the other end of the reinforced connecting plate is fixed with the feeding frame.

According to a further improved scheme of the invention, a step is arranged on one side edge of the placing table, and a fence is fixed on the top of the placing table and positioned on the edge of the placing table.

According to a further improvement scheme of the invention, the blanking conveying device comprises side frames C arranged in parallel at two sides, a plurality of conveying rotary rollers C are uniformly distributed between the side frames C and along the side frames C, and the conveying rotary rollers C are synchronously and synchronously connected with the side frames C in a rotating mode at the same speed through a transmission device E and a driving motor L fixed on the blanking conveying device.

The invention has the beneficial effects that:

first, the automatic capping production line for the coated steel drum realizes the full automation of the capping process of the steel drum after paint spraying, can be directly sold after discharging, effectively reduces the labor cost, and improves the automation and the pipelining of production.

Secondly, the automatic capping production line after the steel drum is coated can realize automatic feeding of the capping production line and meet the automatic feeding of two capping production simultaneously through the action of the feeding conveying device, so that the production efficiency is further improved, and the labor intensity is reduced.

Thirdly, the automatic capping production line after the steel drum is coated can avoid the influence on the subsequent production rhythm caused by too fast and too much steel drum transmission of the feeding and transmitting device through the action of the transition transmitting device.

Fourthly, the automatic capping production line after the steel drum is coated has the advantages that the cover of the opening of the steel drum used in paint spraying is removed before the steel drum is capped by the aid of the cover removing and conveying device, so that subsequent capping operation of the steel drum is facilitated, and the removed cover is recovered conveniently.

Fifthly, the automatic capping production line after the steel drum coating can save the stations of the steel drum, shorten the capping time of a single steel drum and improve the production efficiency of the single steel drum through the action of the capping conveying device.

Description of the drawings:

fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic perspective view of the feeding conveyor and the uncapping conveyor of the present invention.

Fig. 3 is a schematic perspective view of the upper cover conveying device and the blanking conveying device of the present invention.

Fig. 4 is a front enlarged view of the upper cover conveying device.

Fig. 5 is an enlarged perspective view of the cover mounting device and the feeding device.

Fig. 6 is a perspective enlarged view of the cover mounting device and the feeding device from the direction opposite to the viewing angle of fig. 5.

Fig. 7 is an enlarged perspective view of the inert gas injection apparatus.

Fig. 8 is a perspective enlarged schematic view of the rain-proof cover covering device.

Fig. 9 is a side enlarged schematic view of the rain cover capping device.

The specific implementation mode is as follows:

as can be seen from fig. 1 to 9, the automatic capping production line after steel drum coating of the present invention sequentially includes a feeding conveyer 1, a de-covering conveyer 3, a capping conveyer 4 and a blanking conveyer 5 along a steel drum conveying direction;

the feeding and conveying device 1 conveys the steel barrel to the de-covering and conveying device 3;

the cover removing and conveying device 3 comprises a steel barrel rotating device A9 and a cover removing device 6, the steel barrel rotating device A9 rotates the large barrel opening and the small barrel opening at the top of the steel barrel to be matched with the cover removing device 6, the cover removing device 6 separates a cover which covers the large barrel opening and the small barrel opening at the top of the steel barrel from the steel barrel, and the cover removing and conveying device 3 conveys the steel barrel with the cover removed to the upper cover conveying device 4;

the upper cover conveying device 4 comprises a steel drum rotating device B13, an air ventilation device 17, an upper cover device 19, an inert gas injection device 20 and a rain-proof cover upper cover device 21, the steel drum rotating device B13 rotates the big and small drum mouths on the top of the steel drum to match with the air interchanger 17, the upper cover device 19, the inert gas injection device 20 and the rain-proof cover upper cover device 21, the air ventilation device 17 extends into the steel drum from a large drum opening or a small drum opening at the top of the steel drum to inject air into the steel drum, the upper cover device 19 firstly covers the small drum opening at the top of the steel drum, then an inert gas injection device 20 extends into the steel drum from the large drum mouth at the top of the steel drum to inject inert gas into the steel drum, the upper cover device 19 covers the large drum mouth at the top of the steel drum filled with the inert gas, and the rain-proof cover upper cover device 21 fixes the rain-proof cover on the small bucket opening, and the upper cover conveying device 4 conveys the steel bucket with the upper cover to the blanking conveying device 5.

Still be connected with transition conveyer 2 between material loading conveyer 1 and the conveyer 3 that removes the cover, transition conveyer 2 conveys the steel drum of material loading conveyer 1 to removing cover conveyer 3, be equipped with steel drum stop device 7 on the transition conveyer 2, be connected through drum rack A8 between transition conveyer 2's the steel drum stop device 7 position department and the conveyer 3 that removes the cover.

The transition conveying device 2 comprises side frames B202 arranged in parallel at two sides, a plurality of conveying rotary rollers B201 are uniformly distributed between the side frames B202 along the side frames B202, and the conveying rotary rollers B201 are synchronously and rotationally connected to the side frames B202 at the same speed through a transmission device B and a driving motor B203 fixed on the transition conveying device 2.

The steel drum limiting device 7 comprises swing rods A702 symmetrically arranged on the side frames B202 on two sides, the middle parts of the swing rods A702 are horizontally connected with the corresponding side frames B202 in a swinging mode through vertical shafts A, limiting vertical rollers rotatably connected around the vertical shafts B are arranged at one ends, facing the cover removing and conveying device 3, of the swing rods A702, the other ends of the swing rods A702 are connected with the end parts of piston rods D of pistons D701 in a swinging mode, the pistons D701 are connected with the corresponding side frames B202 in a swinging mode through swinging frames 703, and the swinging frames 703 are fixed on the side frames B202;

when the piston rod D extends out of the piston D701, the swing rod A702 drives the limiting rollers to swing oppositely to the maximum stroke, and the distance between the limiting rollers is smaller than the diameter of the steel drum; when the piston rod D retracts to the piston D701, the swing rod A702 drives the limiting rollers to swing back to the maximum stroke, and the distance between the limiting rollers is larger than the diameter of the steel drum.

The barrel conveying frame A8 comprises a parallel frame A801 fixed between a transition conveying device 2 and a cover removing conveying device 3, the tops of the parallel frame A801 are respectively fixed with a track A802 arranged along the parallel frame A801, a sliding seat B804 reciprocating along the track A802 is arranged on the track A802, the sliding seat B804 is fixedly connected with a piston rod E of a piston E803 fixed on the parallel frame A801, the top of the sliding seat B804 is vertically and movably connected with a supporting plate A through a piston F805, and the piston F805 is fixed on the sliding seat B804 and the piston rod F of the piston F805 is fixed with the supporting plate A.

When the piston rod E retracts to the maximum stroke position of the piston E803, the supporting plate A is positioned at the position below the steel drum limited by the steel drum limiting device 7; when the piston rod E extends out of the piston E803 to the maximum stroke, the support plate a is located at the uncapping conveyor 3; when the piston rod F extends out of the piston F805 to the maximum stroke, the top surface of the supporting plate A is higher than the height of the contact part of the steel barrel and the uncapping conveying device 3 and the top of the conveying roller B201; when the piston rod F retracts to the maximum stroke position of the piston F805, the top surface of the supporting plate A is lower than the height of the contact part of the steel barrel and the uncapping conveying device 3 and the top of the conveying roller B201.

The parallel frames A801 are positioned between the side frames B202, and the width of the sliding seat B804 and the width of the supporting plate A are smaller than the distance between the side frames B202.

A plurality of parallel conveying side rollers 206 are further arranged between the side frame B202 and the support plate A along the conveying direction of the transition conveying frame 2, the conveying side rollers 206 are rotatably connected with the side frame B202, the tops of the conveying side rollers 206 are flush with the tops of the conveying rotating rollers 201, and the conveying side rollers 206 are synchronously connected with the conveying rotating rollers 201 in a synchronous and same-speed transmission manner.

The feeding conveying frame 1 comprises side frames A102 arranged in parallel at two sides, a plurality of conveying rotary rollers A101 are uniformly distributed between the side frames A102 and along the side frames A102, and the conveying rotary rollers A101 are connected to the side frames A102 through a transmission device A104 and a driving motor A103 fixed to the feeding conveying device 1 in a synchronous and same-speed rotating mode.

The tail end of the feeding conveying frame 1 is connected with one side of the starting end of the transition conveying frame 2, the feeding conveying frame 1 and the transition conveying frame 2 are arranged vertically, the transition conveying frame 2 faces the side frame B202 on one side of the feeding conveying frame 1 and is provided with a notch B204 matched with the feeding conveying frame 1, a guide roller 205 which horizontally rotates around a vertical shaft C is arranged at the position, close to one side of the cover removing conveying device 3, of the notch B204 at the top of the side frame B202, and the distance between the rim edge of the guide roller 205 and the side frame B202 on the other side and the distance between the side frame A102 on one side far away from the guide roller 205 are larger than or equal to the diameter of the steel barrel.

The side bearer A102 that the material loading conveyer 1 is close to and removes cover conveyer 3 one side still is equipped with notch A105 that is used for connecting the standby upper cover production line, the bottom of material loading conveyer 1, the position department that is located notch A105 are equipped with along conveying commentaries on classics roller A101 axial reciprocating motion's slide A110, swing joint has a plurality ofly to push away material pole setting 106 about the top of slide A110, it is located between two adjacent conveying commentaries on classics roller A101 to push away material pole setting 106, and the interval that pushes away between the pole setting 106 is less than the diameter of steel drum for two adjacent, it is fixed in piston B tip of piston B108 to push away material pole setting 106, piston B108 is fixed in on slide A110, slide A110 and the piston A fixed connection who is fixed in material loading conveyer 1's piston A.

When the piston rod A retracts to the maximum stroke position of the piston A, the material pushing vertical rod 106 is positioned in the side frame A102 which is far away from the side of the notch A105 and in the material loading and conveying frame 1, and the distance between the material pushing vertical rod 106 and the notch A105 is larger than or equal to the diameter of the steel barrel; when the piston rod A extends out of the piston A to the maximum stroke, the material pushing upright rod 106 is positioned in the material loading and conveying frame 1 and at the position of the side frame A102 close to the side of the notch A105; when the piston rod B retracts into the piston B108 to the maximum stroke, the top of the material pushing upright rod 106 is lower than the top of the conveying roller A101; when the piston rod B extends out of the piston B108 to the maximum stroke, the top of the material pushing upright rod 106 is higher than the top of the conveying roller A101.

In the gaps between two adjacent conveying rollers a101, a guide baffle 107 is arranged in the gap between the two adjacent conveying rollers a101, wherein the gap is located in the range of the notch a105 and closest to the transition conveying frame 2, the guide baffle 107 is movably connected up and down through a piston C109, the piston C109 is fixed to the feeding conveying frame 1 and is located below the conveying rollers a101, and one side of the guide baffle 107 facing the notch a105 extends to the side frame a102 on the side of the notch a 105.

The guide baffle 107 is fixed at the end part of a piston rod C of the piston C109; when the piston rod C retracts to the piston C109 to the maximum stroke, the top of the guide flapper 107 is lower than the top of the conveying roller a 101; when the piston rod C extends out of the piston C109 to the maximum stroke, the top of the guide flapper 107 is higher than the top of the transfer roller a 101.

The cover removing and conveying device 3 comprises two conveying chains A which are arranged in parallel, two ends of each conveying chain A are in transmission connection with a chain wheel A301, the chain wheels A301 are in rotation connection with the cover removing and conveying device 3, a driving wheel B305 is coaxially and fixedly connected with the chain wheel A301 at one end, a driving wheel A303 in transmission connection with the driving wheel B305 is further rotatably connected to the cover removing and conveying device 3, the driving wheel A303 is in transmission connection with a driving motor C302 fixed on the cover removing and conveying device 3 through a transmission device C, the distance between the conveying chains A is smaller than the diameter of a steel barrel, and the conveying chains A are symmetrically located on two sides of a barrel conveying frame A8.

A horizontal supporting rod 304 is fixed at the top of the de-cover conveying device 3 and between two chain wheels A301 corresponding to the same conveying chain A, and the horizontal supporting rod 304 is fixed on the de-cover conveying device 3 through an L-shaped vertical rod; the conveyor chain a wound around the upper portion of the sprocket a301 is placed on the horizontal carrier bar 304.

The uncovering conveying device 3 further comprises an uncovering device 6 arranged between the two chain wheels A301 and located above the conveying chain A, and a steel drum rotating device A9 arranged on one side, facing the feeding conveying device 1, of the uncovering device 6.

The cover removing device 6 comprises a portal frame 601 fixed on the cover removing and conveying device 3, the conveying chain A penetrates through the portal frame 601, magnetic blocks 606 are respectively arranged on two sides of the top in the portal frame 601, the magnetic blocks 606 horizontally reciprocate along the conveying direction perpendicular to the chain A, the magnetic blocks 606 vertically reciprocate, cover falling pipes 607 are further fixedly arranged on two sides of the portal frame 601, a sensor B609 is further downwards arranged at the rear end of the top of the portal frame 601, a sensor C610 matched with a steel barrel rotating device A9 is further arranged on one side of the front end of the top of the portal frame 601, and the distance between the sensor C610 and the axis of a steel barrel at the position of the steel barrel rotating device A9 is larger than the maximum distance between the edge of a small barrel opening at the top of the steel barrel and the axis of the steel barrel and is smaller than the maximum distance between the edge of a large barrel opening at the top of the steel barrel and the axis of; the movable range of the magnetic block 606 under the action of the corresponding piston E603 passes through the cover dropping pipe 607 at the corresponding side, the feed inlet of the cover dropping pipe 607 is upward, the height of the edge of the feed inlet at the side of the cover dropping pipe 607 facing the conveyor chain A is lower than the height of the edge of the feed inlet at the side opposite to the conveyor chain A, and when the magnetic block 606 moves inwards to the maximum stroke, the magnetic block 606 is respectively positioned above the corresponding barrel mouth of the steel barrel; when the magnetic block 606 moves outwards to the maximum stroke, the magnetic block 606 is positioned at the outer side of the corresponding cover dropping pipe 607; when the magnetic block 606 moves downwards to the maximum stroke, the magnetic force of the magnetic block 606 attracts the cover cap at the position of the opening of the steel barrel corresponding to the barrel opening; when the magnetic block 606 moves upward to the maximum stroke, the height of the bottom of the cover cap adsorbed by the bottom of the magnetic block 606 is between the heights of the edges of the two sides of the feed port of the cover dropping pipe 607.

The magnetic blocks 606 on each side are respectively fixed to the end portion of the piston rod D of the piston D602 on the corresponding side, the piston rod D extends out of the piston D602 downwards, the piston D602 is fixed to the end portion of the piston rod E603 on the corresponding side, the piston D602 drives the magnetic blocks 606 to reciprocate up and down, the piston E603 drives the magnetic blocks 606 to horizontally reciprocate perpendicular to the conveying direction of the conveying chain a, the pistons E603 are respectively fixed to the top of the portal frame 601, and the movable range of the magnetic blocks 606 under the action of the corresponding pistons E603 passes through the cover dropping pipe 607 on the corresponding side.

The top in the portal frame 601 is provided with a sliding frame 604 which is connected in a sliding mode along the lateral direction of the top of the portal frame 601, the sliding frame 604 is fixed at the end portion of a piston rod E of a piston E603, and a piston D602 is fixed on the sliding frame 604.

The sliding frame 604 reciprocates along a horizontal sliding rail a605 arranged at the top of the portal frame 601.

The lower discharging section 608 of the cover dropping pipe 607 is inclined in a direction from top to bottom away from the gantry 601, and the bottom of the discharging section 608 is a discharging opening.

The steel drum rotating device A9 comprises a rotating base A904 fixed on the cover removing conveying device 3, the rotating base A904 is located below the upper half part of the conveying chain A, clamping bases A are respectively arranged on the rotating base A904 and correspondingly located on the outer side of the conveying chain A, clamping rollers A901 which are horizontally and rotatably connected around a vertical shaft are respectively arranged at the front end and the rear end of the edge of one side, facing the conveying chain A, of the top of each clamping base A, the positions of the clamping rollers A901 on the two sides correspond to each other, the clamping rollers A901 of the clamping bases A on one side provide driving force through a driving motor D902 fixed on the clamping bases A, a sensor A905 is arranged between the conveying chains A at the top of the rotating base A904, and the top of the sensor A905 is lower than the top of the conveying chain A.

The clamping bases A respectively perform horizontal reciprocating movement which is perpendicular to the conveying direction of the conveying chain A relative to the rotating base A904 through pistons F, and the pistons F are fixed on the rotating base A904; when the clamping seat A moves back to the maximum stroke, the distance between the clamping rollers A901 corresponding to the two sides is larger than the diameter of the steel drum; when the clamping bases A move to the maximum stroke position oppositely, the distance between the clamping rollers A901 corresponding to the two sides is smaller than the diameter of the steel drum.

A horizontal sliding rail B903 is fixed on the rotating base A904 along the moving direction of the clamping seat A, and the clamping seat A and the rotating base A904 reciprocate along the horizontal sliding rail B903.

The uncapping conveying device 3 is connected with the upper cover conveying device 4 through a barrel conveying frame B10, the barrel conveying frame B10 comprises a parallel frame B1001 fixed between the uncapping conveying device 3 and the upper cover conveying device 4, the tops of the parallel frames B1001 are respectively fixed with a track B1002 arranged along the parallel frame B1001, a sliding seat C1004 reciprocating along the track B1002 is arranged on the track B1002, the sliding seat C1004 is fixedly connected with a piston rod G of a piston G1003 fixed on the parallel frame B1001, the top of the sliding seat C1004 is movably connected with a support plate B up and down through a piston H1005, and the piston H1005 is fixed on the sliding seat C1004, and a piston rod H of the piston H1005 is fixed with the support plate B.

When the piston rod G retracts to the piston G1003 to the maximum stroke position, the supporting plate B is positioned at the position below the steel drum at the tail end of the uncovering conveying device 3; when the piston rod G extends out of the piston G1003 to the maximum stroke, the supporting plate B is positioned at the position of a steel drum rotating device B13 of the upper cover conveying device 4; when the piston rod H extends out of the piston H1005 to the maximum stroke, the top surface of the support plate B is higher than the height of the contact part of the steel drum and the uncovering conveying device 3 and the height of the contact part of the steel drum and the upper cover conveying device 4; when the piston rod H retracts to the maximum stroke position of the piston H1005, the top surface of the support plate B is lower than the height of the contact part of the steel drum and the uncovering conveying device 3 and the height of the contact part of the steel drum and the upper cover conveying device 4.

The parallel frame B1001 is located between the side frames B202, and the support plate B is located between the two parallel conveyor chains a 202.

In a further improvement of the invention, the upper cover conveying device 4 is movably connected with a steel drum stepping conveying device 14, the steel drum stepping conveying device 14 simultaneously conveys the steel drum positioned on the steel drum rotating device B13, the steel drum positioned on the air ventilation device 17, the steel drum positioned on the upper cover device 19 and the steel drum positioned on the rainproof cover upper cover device 21 to the position of the air ventilation device 17, the position of the upper cover device 19, the position of the rainproof cover upper cover device 21 and the position of a conveying chain B1405 correspondingly, two conveying chains B1405 are arranged in parallel, the symmetrical axes of the upper cover conveying device 4 are axisymmetric and are positioned between the upper cover conveying device 4 and the discharging conveying device 5, the transmission chain B1405 is wound on a transmission wheel C1406, the transmission wheel C1406 is rotatably connected with the upper cover conveying device 4, the upper cover conveying device 4 is also provided with a driving motor F1407, and the driving motor F1407 is in transmission connection with a transmission wheel C1406.

The steel drum stepping conveying device 14 comprises a pair of parallel rotating rods 1404 arranged along the conveying direction of the steel drum of the upper cover conveying device 4, the parallel rotating rods 1404 are in sliding connection with two rails C401 arranged at the top of the upper cover conveying device 4 along the conveying direction of the steel drum through a sliding frame 1403, the parallel rotating rods 1404 are in rotating connection with the sliding frame 1403 around the axis of the parallel rotating rods 1404 through a driving motor E1505 fixed to the upper cover conveying device 4, multiple groups of limit convex rods 1401 are sequentially and uniformly distributed at the top of the parallel rotating rods 1404 along the length direction of the parallel rotating rods 1404, each group of limit convex rods are matched with the bottom of the steel drum, a conveying chain B1405 is located between the rails C401, a driving motor G1505 is further fixedly arranged on the upper cover conveying device 4, and the driving motor G1505 drives the steel drum stepping conveying device 14 to move along a horizontal sliding rail C401.

The limit convex rod 1401 is fixedly connected with the parallel rotating rod 1404 through a strip-shaped connecting piece 1402, and the length direction of the strip-shaped connecting piece 1402 is parallel to the parallel rotating rod 1404.

Each group of limit convex rods 1401 comprises four limit convex rods 1401, and two limit convex rods 1401 are symmetrically arranged on each side of the parallel rotating rod 1404; when the first group of limit convex rods 1401 along the conveying direction of the steel drum is correspondingly positioned on the steel drum rotating device B13, the air ventilation device 17, the upper cover device 19 and the rain-proof cover upper cover device 21 are also respectively provided with a corresponding group of limit convex rods 1401; when the first set of limit convex rods 1401 along the conveying direction of the steel drum is correspondingly positioned on the air interchanger 17, the upper cover device 19, the rain-proof cover upper cover device 21 and the discharging conveying device 5 are respectively provided with a corresponding set of limit convex rods 1401.

The parallel rotating rods 1404 are composed of a plurality of rotating rod units connected end to end, the limiting convex rods 1401 are respectively and fixedly connected with the rotating rod units, two adjacent rotating rod units are connected through a transmission connecting seat 15, the rotating rod units are respectively and rotatably connected with a supporting vertical frame 1502 arranged at the top of the connecting seat base 1501, and the transmission connecting seat 15 is in sliding connection with the upper cover conveying device 4 through a track C401.

The limiting convex rod 1401 is fixedly connected with the rotating rod unit through a strip-shaped connecting piece 1402, and the length direction of the strip-shaped connecting piece 1402 is parallel to the rotating rod unit.

The transmission connecting seat 15 comprises a connecting seat bottom plate 1501 connected with a track C401, a piston I1509 is fixed on the connecting seat bottom plate 1501, the end part of a piston rod I of the piston I1509 is respectively and synchronously connected with a rotating rod unit connected with the transmission connecting seat 15 through a connecting rod transmission mechanism 1503 movably connected on the connecting seat bottom plate 1501 in a transmission way, and when the piston rod I extends out of the piston I1509 to the maximum stroke position, the rotating rod unit drives a limiting convex rod 1401 to rotate outwards until the limiting convex rod 1401 and the rotating rod unit are positioned in the same horizontal plane or the convex rod 1401 is positioned at the lower side of the rotating rod unit; when the piston rod I retracts to the maximum stroke position of the piston I1509, the rotating rod unit drives the limit convex rod 1401 to rotate upwards to be vertical.

A connecting seat top plate 1508 is fixed above the connecting seat bottom plate 1501 through a supporting vertical frame 1502, the connecting seat top plate 1508 is fixed with the top of the supporting vertical frame 1502, the piston I1509 and the connecting rod transmission mechanism 1503 are respectively located between the connecting seat top plate 1508 and the connecting seat bottom plate 1501, and the top surface of the connecting seat top plate 1508 is flush with the top of the rotating rod unit.

A transmission box 1504 is fixed at the bottom of one of the transmission connecting seats 15, a nut pair a is rotatably connected in the transmission box 1504, the nut pair a is in transmission connection with a transmission screw a1506 coaxially fixed on an output shaft of a driving motor G1505, and two ends of the transmission screw a1506 are rotatably connected with the upper cover conveying device 4 through bearing seats.

A horizontal link 1507 is fixedly connected between the connecting base 1501 near the end of the horizontal rotating rod 1404 and the sliding frame 1403 at the corresponding end.

The positions of the two sides of the top of the upper cover conveying device 4, corresponding to the air exchange device 17 and the rain-proof cover upper cover device 21, are respectively and symmetrically and fixedly connected with railings 402 along the conveying direction of the steel drum of the upper cover conveying device 4.

The bottom of the supporting leg of the upper cover conveying device 4 is also provided with an adjusting foot support 403.

The steel drum rotating device B13 comprises rotating bases B1303 symmetrically fixed on the upper cover conveying device 4 and located on two sides of the horizontal sliding rail C401, clamping bases B are respectively arranged on the rotating bases B1303 and correspondingly located on the outer side of the steel drum stepping conveying device 14, clamping rollers B1301 horizontally and rotatably connected around a vertical shaft are respectively arranged at the front end and the rear end of the top of each side of the clamping base B facing to the edge of one side of the steel drum stepping conveying device 14, the positions of the clamping rollers B1301 on the two sides correspond to each other, and the clamping rollers B1301 of the clamping bases B on one side provide driving force through a driving motor H1302 fixed on the clamping bases B.

The clamping seat B respectively makes horizontal reciprocating motion perpendicular to the conveying direction of the steel drum relative to a rotating base B1303 through a piston J1304, and the piston J1304 is fixed on the rotating base B1303; when the clamping seat B moves back to the maximum stroke, the distance between the corresponding clamping rollers B1301 at the two sides is larger than the diameter of the steel drum; when the clamping seats B move oppositely to the maximum stroke, the distance between the corresponding clamping wheels B1301 at the two sides is smaller than the diameter of the steel drum.

A horizontal sliding rail D1305 is fixed on the rotating base B1303 along the moving direction of the clamping seat B, and the clamping seat B reciprocates with the rotating base B1303 along the horizontal sliding rail D1305.

The air ventilation device 17, the upper cover device 19 and the rain-proof cover upper cover device 21 are all arranged at the top of the top frame 11, supporting legs of the top frame 11 are symmetrically arranged at two sides of the upper cover conveying device 4, the top of the top frame 11 is also provided with a sensor D12 and a steel barrel opening positioning device A16 which are matched with the steel barrel rotating device B13, the air ventilation device 17 is sequentially provided with two devices along the conveying direction of the steel barrels on the upper cover conveying device 4, and the upper cover device 19 is sequentially provided with two devices along the conveying direction of the steel barrels on the upper cover conveying device; a placing table 22 is further arranged on one side of the top frame 11, and a small bucket opening cover feeding device 25 and a large bucket opening cover feeding device 26 which are correspondingly connected with the upper cover device 19 and a rain-proof cover feeding device 27 which is correspondingly connected with the rain-proof cover upper cover device 21 are fixed on the placing table 22.

The sensor D12 is matched with the steel drum rotating device B13, and the sensor D12 is positioned at the side of the steel drum rotating device B13 facing the de-cover conveying device 3;

the steel barrel opening positioning device A16 is matched with the previous air ventilation device 17, and the steel barrel opening positioning device A16 corresponds to the steel barrel positioned at the position of the previous air ventilation device 17; and the former air interchanger 17 corresponds to the small bucket opening of the steel bucket at the position;

the latter air ventilator 17 is matched with the former upper cover device 19, and the latter air ventilator 17 corresponds to the steel drum positioned at the former upper cover device 19; the latter air interchanger 17 corresponds to the large mouth of the steel barrel at the position, and the former upper cover device 19 corresponds to the small mouth of the steel barrel at the position;

the inert gas injection device 20 corresponds to the large barrel mouth of the steel barrel at the position;

the latter upper cover device 19 is matched with the rain-proof cover upper cover device 21, the latter upper cover device 19 corresponds to the large barrel opening of the steel barrel at the position, and at the moment, the rain-proof cover upper cover device 21 corresponds to the small barrel opening of the steel barrel at the position.

The sensor D12 is fixed at the end part of a piston rod K of the piston K1202 through a mounting connecting plate A1201, the piston rod K extends downwards out of the piston K1202, the piston K1202 is fixed on the top frame 11, and the distance between the sensor D12 and the axis of the steel drum at the position of the steel drum rotating device B13 is greater than the maximum distance between the edge of the small opening at the top of the steel drum and the axis of the steel drum and is less than the maximum distance between the edge of the large opening at the top of the steel drum and the axis of the steel drum;

when the piston rod K extends out of the piston K1202 to the maximum stroke, the sensor D12 works; when the piston rod K retracts to the piston K1202 to the maximum stroke, the sensor D12 stops working.

The piston K1202 is fixed to a mounting plate 1204 fixed to the upper frame 11 by an adjustment cross plate 1203.

The steel barrel opening positioning device A16 comprises two groups of clamps 1601 which are movably connected between the top frame 11 and the upper cover conveying device 4 from top to bottom and are respectively matched with the outer side wall of a large barrel opening and the outer side wall of a small barrel opening on the top of the steel barrel, the clamps 1601 are respectively fixedly connected with the end parts of piston rods L of pistons L1602, the pistons L1602 are fixed on the top frame 11, and the piston rods L extend out of the pistons L1602 downwards;

when the piston rod L extends out of the piston L1602 to the maximum stroke, the height of the clamp 1601 is matched with the height of the steel barrel opening, and when the piston rod L retracts to the maximum stroke from the piston L1602, the height of the clamp 1601 is higher than the top of the steel barrel opening.

The air interchanger 17 comprises a compressed air pipe fixed at the end of a piston rod M, the piston rod M extends downwards out of a piston M1701, and the piston M1701 is fixed on the top frame 11 through a mounting bracket A;

when the piston rod M extends out of the piston M1701 downwards to the maximum stroke position, the bottom opening of the compressed air pipe extends into the steel barrel from the barrel opening of the steel barrel, and the compressed air inlet device communicated with the compressed air pipe is used for air inlet; when the piston rod M retreats upwards to the piston M1701 to the maximum stroke, the compressed air intake device communicated with the compressed air pipe stops air intake, and the bottom end of the compressed air pipe is higher than the bung hole of the steel drum.

The inert gas injection apparatus 20 includes an inert gas pipe 2001 fixed to an end of a piston rod N, the piston rod N downwardly extending a piston N2002, the piston N2002 being fixed to the top frame 11 by a mounting frame B2004;

when the piston rod N extends downwards out of the piston N2002 to the maximum stroke position, the bottom opening of the inert gas pipe 2001 extends into the steel barrel from the large barrel opening of the steel barrel, and the inert gas inlet device communicated with the inert gas pipe 2001 is used for gas inlet; when the piston rod N retracts upwards to the maximum stroke position of the piston N2002, the inert gas inlet device communicated with the inert gas pipe 2001 stops gas inlet, and the bottom end of the inert gas pipe 2001 is higher than the barrel opening of the steel barrel.

The inert gas pipe 2001 is fixed with the end part of the piston rod N through a mounting connecting plate B2003, the mounting connecting plate B2003 is positioned below a mounting rack B2004, a guide rod A2005 is further fixedly arranged at the top of the mounting connecting plate B2003, and the guide rod A2005 upwards penetrates through a guide pipe A arranged on the mounting rack B2004.

The feeding device 18 is connected between the small bucket cover feeding device 25 or the large bucket cover feeding device 26 and the upper cover device 19, and between the rain cover feeding device 27 and the rain cover upper cover device 21.

The feeding device 18 comprises a conveyor belt 1801 which is in driving connection through a driving motor J1802, the conveyor belt 1801 is movably connected with a feeding rack of the feeding device 18, one end of the feeding rack is fixed with the top frame 11, and the other end of the feeding rack is communicated and fixed with a discharge hole of the small bucket opening cover feeding device 25, the large bucket opening cover feeding device 26 or the rain-proof cover feeding device 27; a limiting baffle 1803 is fixed at the tail end of the feeding frame at the feeding belt 1801, a pushing block 1805 perpendicular to the conveying direction of the conveying belt 1801 is arranged on one side of the limiting baffle 1803 facing the feeding end of the feeding frame, the pushing block 1805 is fixedly connected to the end of a piston rod R of a piston R1806, the piston R1806 is fixed at one side of the feeding frame, a feeding groove 1804 matched and communicated with the conveying belt 1801 is arranged at the position of the other end of the feeding frame corresponding to the pushing block 1805 relative to the piston R1806, and the conveying belt 1801 is communicated with the barrel cover placing groove through a feeding groove 1804;

the feeding end of the feeding frame is fixed on a small bucket opening cover feeding device 25, a large bucket opening cover feeding device 26 or a rain cover feeding device 27 through a support plate C1810, and the discharging end of the feeding frame is fixed with the top frame 11 through a mounting connection plate D;

the barrel cover placing groove comprises two oppositely arranged slotted lobes 1812, the slotted lobes 1812 are fixedly connected to the end part of a piston rod Q of a piston Q1813, and the piston Q1813 is fixed to the bottom frame of the lifting frame B1910; when the piston rod Q extends out of the piston Q1813 to the maximum stroke, the petals 1812 move towards each other to contact with each other, and at the same time, the petals 1812 form a barrel cover placing groove.

The feeding frame is further provided with a material poking rod 1807 at a position between the conveying belt 1801 and the material pushing block 1805, the material poking rod 1807 is connected to the feeding frame through a piston S1808 in a swinging mode, the piston S1808 is connected with the feeding frame in a swinging mode, and the end portion of a piston rod S of the piston S1808 is connected with the material poking rod 1807;

when the piston rod S retracts to the maximum stroke position of the piston S1807, the material stirring rod 1807 forwards stirs a barrel cover or a rain cover located at the position of the material stirring rod 1807 on the conveyor belt 1801 along the conveying direction of the conveyor belt 1801; when the piston rod S extends out of the piston S1807 to the maximum stroke, the material pulling rod 1807 pulls back a barrel cover or a rain cover on the conveyor belt 1801, which is located on the side of the material pulling rod 1807 opposite to the material pushing block 1805, in the direction opposite to the conveying direction of the conveyor belt 1801.

And limiting guide grooves 1809 corresponding to the edges of the bucket cover or the rain cover are symmetrically arranged on two sides of the feeding frame, which are positioned at the top of the conveying belt 1801.

The support plate C1810 comprises two L-shaped support plate units, a strip-shaped through hole is correspondingly formed between the two L-shaped support plate units, and the strip-shaped through hole is fixed through a fixing bolt.

The upper cover device 19 comprises a cover taking device 1901 movably connected to the upper frame 11 and used for grabbing a barrel cover, and the top of the cover taking device 1901 is in transmission connection with a rotating shaft of a driving motor I1902 through a transmission device D;

the driving motor I1902 is fixed to a lifting frame A1904, and the lifting frame A1904 is fixed to the end of a piston rod O of a piston O1903;

the piston O1903 is fixed to a lifting frame B1910, and the lifting frame B1910 is fixed to the end part of a piston rod P of a piston P1911; the lifting frame A1904 is movably connected in the lifting frame B1910 up and down;

the piston P1911 is fixed in a door-shaped frame 1917, the door-shaped frame 1917 is fixed on the top of the top frame 11 through a mounting substrate A1916, and the lifting frame B1910 is movably connected in the door-shaped frame 1917 up and down;

the piston rod O extends downwards to form a piston O1903, the piston O1903 is fixed in the lifting frame B1910, and the lifting frame A1904 moves up and down along the lifting frame B1910 under the action of the piston O1903 in the lifting frame B1910;

the piston rod P extends out of the piston P1911 downwards, the piston P1911 is fixed to a door-shaped frame 1917, and the lifting frame B1910 moves up and down along the door-shaped frame under the action of the piston P1911 in the door-shaped frame 1917;

when the piston rod O retracts upwards to the maximum stroke position from the piston O1903 and the piston rod P retracts upwards to the maximum stroke position from the piston P1911, the cover taking device 1901 is positioned above the barrel cover placing groove; when the piston rod O extends out of the piston O downwards to the maximum stroke and the piston rod P retreats upwards to the maximum stroke from the piston P1911, the cap taking device 1901 is located at the position of the barrel cover placing groove; when the piston rod O retracts upwards to the maximum stroke position from the piston O1903 and the piston rod P extends downwards to the maximum stroke position from the piston P1911, the cover taking device 1901 is positioned above the opening of the steel barrel at the corresponding position on the upper cover conveying device; when the piston rod O extends downwards from the piston O1903 to the maximum stroke position and the piston rod P extends downwards from the piston P1911 to the maximum stroke position, the height of the cap removing device 1901 is lower than the height of the opening of the steel barrel at the corresponding position on the upper cap conveying device.

An opening is formed in the middle of the bottom frame of the lifting frame B1910, and the trough flaps 1812 are respectively located on the bottom frames on two sides of the opening;

when the piston rod Q retracts the piston Q1813 to the maximum stroke, the spacing between the lobes 1812 is greater than the diameter of the cap remover 1901.

A positioning groove 1814 matched with the barrel cover is arranged under the barrel cover placing groove corresponding to the cap taking device 1901, positioning grooves are symmetrically arranged on the opposite surfaces of the petals 1812, and when the piston rod Q extends out of the piston Q1813 to the maximum stroke position, the positioning grooves are correspondingly spliced to form the positioning groove 1814.

A guide rod B1912 is fixed in the lifting frame B1910 and positioned at the top edge of the lifting frame B1910, a matched guide tube B is arranged on the top edge of the lifting frame A1904 corresponding to the guide rod B1912, and the guide rod B1912 penetrates through the guide tube B and extends into the lifting frame A1904.

Two side walls in the door-shaped frame 1917 are symmetrically provided with tracks D1914 extending in the up-down direction, and the lifting frame B1910 is respectively and fixedly provided with matched sliders a1915 corresponding to the tracks D1914.

The mounting connecting plate D is fixed on the top frame 11 through a mounting substrate A1916, the upper cover device 19 further comprises a steel barrel bung positioning device B, the steel barrel bung positioning device B is movably connected to the bottom of the mounting connecting plate E1905 and located under the cover taking device 1901, the mounting connecting plate E1905 is movably connected to the lower side of the mounting connecting plate D up and down through a piston T1906, the piston T1906 is fixed on the mounting connecting plate D, the end of a piston rod T of the piston T1906 extends out of the piston T1906 downwards and then is fixed with the mounting connecting plate E1905, the steel barrel bung positioning device B comprises two oppositely arranged clamping flaps A1907, the clamping flaps A1907 are respectively and fixedly connected to the end of a piston rod U1908, the piston U1908 is fixed on the mounting connecting plate E1905, the steel barrel bung positioning device B is correspondingly located under the cover taking device 1901, bung positioning grooves 1909 are symmetrically arranged on the opposite surfaces of the clamping flaps A1907, when the piston rod U extends out of the piston U1908 to the maximum stroke position, the bung positioning grooves are correspondingly spliced to form a bung positioning slot 1909; when the clip petals A1907 are at the point where the piston rod exits the piston U1908 to the maximum stroke, the distance between the clip petals A1907 is greater than the bung diameter of the steel drum.

In a further improvement of the present invention, a guide rod C1913 is fixed to the top of the mounting connecting plate E1905, the mounting substrate a1916 is provided with a matching guide tube C corresponding to the guide rod C1913, and the guide rod C1913 passes through the mounting substrate a1916 via the guide tube C.

The rain-proof cover-taking device 21 comprises a rain-proof cover-taking device 2101 movably connected below a rain-proof cover-taking top frame 2115 and a steel barrel opening positioning device C, the rain-proof cover-taking device 2101 is fixed at the end of a piston rod V of a piston V2103, the piston rod V extends downwards out of a piston V2103, the piston V2103 is fixed at the end of a piston rod W of a piston W2106, the piston rod W extends downwards out of a piston W2106, the piston W2106 is fixed at the bottom of a movable frame 2105, the movable frame 2105 is fixed with a nut pair B2112, the movable frame 2105 is in transmission connection with a transmission screw B2110 which is rotatably connected with the rain-proof cover-taking top frame 2115 through the nut pair B2112, the transmission screw B2110 provides driving force through a driving motor K2111 which is fixed at the rain-proof cover-taking top frame 2115, the rain-proof cover-taking device 2101 makes reciprocating movement between the discharge end of a conveying device 18 of the rain-proof cover-taking device 27 and, the rain-proof cover top frame 2115 is fixedly connected with the top frame 11; the steel drum bung hole positioner C includes two clamp lamella B2102 that set up relatively, clamp lamella B2102 is fixed connection in the piston rod X tip of piston X2104 respectively, piston X2104 is fixed in installation connecting plate F respectively, installation connecting plate F is fixed in piston rod Y tip of piston Y2108, piston rod Y stretches out piston Y2108 downwards, piston Y2108 is fixed with roof-rack 11 through installation base plate B2107.

The piston W2106 is fixed to the moving frame 2105 via a mounting board C2109.

The bottom of the rain-proof cover top cover frame 2115 is fixedly connected with a track E2114 along the horizontal moving direction of the moving frame 2105, and the moving frame 2105 is provided with a matched sliding block B2113 corresponding to the track E2114.

A limit stop 1815 is fixed on the feed chute 1804 after penetrating through the bottom of the trough flap 1812, a rain-proof cover positioning tray matched with a rain-proof cover is arranged at the position, corresponding to the trough flap 1812, of the bottom of the feed chute 1804, the rain-proof cover positioning tray is fixedly connected to the end of a piston rod Z of a piston Z1816, the piston rod Z extends upwards to extend out of the piston Z1816, and the piston Z1816 is fixed at the bottom of the feed chute 1804;

when the piston rod Z retracts to the maximum stroke position of the piston Z1816, the rain cover positioning tray is matched with the feed chute 1804; when the piston rod Z extends out of the piston Z1816 to the maximum stroke position, the height of the rain cover positioning tray is lifted upwards to match the height of the rain cover taking device 2101 when the piston rod W retracts back to the maximum stroke position of the piston W2106 and the piston rod V extends out of the maximum stroke position of the piston V2103.

The lower part of the feeding device 18 corresponding to the rain-proof cover upper cover device 21 is also fixedly connected with a reinforcing connecting plate 1811, one end of the reinforcing connecting plate 1811 is fixed with the support plate C1810, and the other end is fixed with the feeding rack.

A step 23 is arranged at one side edge of the placing table 22, and a rail 24 is fixed at the top of the placing table 22 and at the edge position of the placing table 22.

The blanking conveying device 5 comprises side frames C502 arranged in parallel at two sides, a plurality of conveying rotary rollers C501 are uniformly distributed between the side frames C502 and along the side frames C502, and the conveying rotary rollers C501 and a driving motor L503 fixed on the blanking conveying device 5 are synchronously and rotationally connected to the side frames C502 at the same speed through a transmission device E.

When the automatic capping machine is used, feeding is carried out through the feeding conveying device 1, and the feeding can be divided into two automatic capping production lines according to actual production conditions; then the transition conveying device 2 controls the conveying of the steel drum according to the production speed of the subsequent automatic capping production line; the steel barrel can be rotated to the direction of the connecting line of the openings of the steel barrel to be vertical to the conveying direction of the steel barrel under the action of the cover conveying device 3, then when the steel barrel after steering passes through the cover conveying device 6, the cover at the position of the opening of the steel barrel can be removed, and the cover is moved to two sides to enable the cover to be collected along the blanking pipe 607; the steel barrel is rotated on the upper cover conveying device 4 through the steel barrel rotating device B until the connecting line direction of the openings of the steel barrel is approximately consistent with the conveying direction of the steel barrel, and the small openings face one side of the discharging conveying device; then when the steel drum is conveyed forwards to the steel drum bung hole positioning device A16, the steel drum bung hole positioning device A16 carries out accurate positioning on the bung hole of the steel drum, the connection line direction of the bung hole of the steel drum is consistent with the conveying direction of the steel drum, meanwhile, the previous air ventilation device 17 extends into the steel drum from the small bung hole and injects compressed air, the gas in the steel drum is discharged from the large bung hole and is replaced by clean compressed air, and then the air ventilation device 17 returns upwards; the steel barrel continues to move forwards to the next air interchanger 17, the next air interchanger 17 extends into the steel barrel from the opening of the large barrel and injects compressed air, and the gas in the steel barrel is discharged from the opening of the small barrel and is further replaced by clean compressed air; then the former upper cover device carries out the bucket mouth installation of the small bucket mouth of the steel bucket; at the moment, compressed air circularly flows in the steel drum along the air blowing direction to be discharged from the big drum opening of the steel drum after being blown into the compressed air through a compressed air pipe extending from the big drum opening in the direction of the inside of the steel drum; the clean compressed air is replaced for the second time, the clean compressed air is replaced for the first time, and the airflow direction of the clean compressed air in the steel drum is opposite, so that each part in the steel drum is blown through multiple angles, the air replacement effect in the steel drum is better, and impurity waste gas in the steel drum is blown out as much as possible; after the barrel cover of the small barrel opening of the steel barrel is installed, the steel barrel is conveyed continuously, when the steel barrel is positioned in the inert gas injection device 20, the inert gas injection device 20 extends into the steel barrel from the large barrel opening of the steel barrel and then injects inert gas into the steel barrel, and after a certain amount of inert gas is injected, the inert gas injection device 20 leaves the steel barrel upwards; the steel barrel is conveyed continuously, when the steel barrel is conveyed to the next upper cover device, the large barrel opening of the steel barrel corresponds to the next upper cover device, and meanwhile, the rain-proof upper cover device corresponds to the small barrel opening of the steel barrel, so that barrel cover installation of the large barrel opening and rain-proof cover installation of the small barrel opening are carried out simultaneously; after the installation of the barrel cover of the large barrel opening and the installation of the rain cover of the small barrel opening are completed, the steel barrel is conveyed to the discharging conveying device 5 to be discharged.

Claims

1. Automatic upper cover production line after steel drum application, its characterized in that: the device comprises a feeding conveying device (1), a cover removing conveying device (3), an upper cover conveying device (4) and a discharging conveying device (5) in sequence along the conveying direction of the steel drum;

the feeding conveying device (1) conveys the steel barrel to the uncovering conveying device (3);

the cover removing and conveying device (3) comprises a steel barrel rotating device A (9) and a cover removing device (6), the steel barrel rotating device A (9) rotates a large barrel opening and a small barrel opening at the top of the steel barrel to be matched with the cover removing device (6), the cover removing device (6) separates a cover which covers the large barrel opening and the small barrel opening at the top of the steel barrel from the steel barrel, and the cover removing and conveying device (3) conveys the steel barrel with the cover removed to the upper cover conveying device (4);

the upper cover conveying device (4) comprises a steel drum rotating device B (13), an air ventilating device (17), an upper cover device (19), an inert gas injecting device (20) and a rainproof cover upper cover device (21), wherein the steel drum rotating device B (13) rotates a large drum opening and a small drum opening at the top of the steel drum to be matched with the air ventilating device (17), the upper cover device (19), the inert gas injecting device (20) and the rainproof cover upper cover device (21), the air ventilating device (17) extends into the steel drum from the large drum opening or the small drum opening at the top of the steel drum to inject air into the steel drum, the upper cover device (19) firstly covers the small drum opening at the top of the steel drum, then the inert gas injecting device (20) extends into the steel drum from the large drum opening at the top of the steel drum to inject inert gas into the steel drum, and the upper cover device (19) covers the large drum opening at the top of the steel drum filled with inert gas, and the rain-proof cover upper cover device (21) fixes the rain-proof cover on the small bucket opening, and the upper cover conveying device (4) conveys the steel bucket with the upper cover to the blanking conveying device (5).

2. The automatic capping production line after the steel drum coating as claimed in claim 1, is characterized in that: a transition conveying device (2) is further connected between the feeding conveying device (1) and the cover removing conveying device (3), the transition conveying device (2) conveys the steel barrel of the feeding conveying device (1) to the cover removing conveying device (3), a steel barrel limiting device (7) is arranged on the transition conveying device (2), and the position of the steel barrel limiting device (7) of the transition conveying device (2) is connected with the cover removing conveying device (3) through a barrel conveying frame A (8); the transition conveying device (2) comprises side frames B (202) arranged in parallel at two sides, a plurality of conveying rotary rollers B (201) are uniformly distributed among the side frames B (202) along the side frames B (202), and the conveying rotary rollers B (201) are synchronously and rotationally connected with the side frames B (202) at the same speed through a transmission device B and a driving motor B (203) fixed on the transition conveying device (2).

3. The automatic capping production line after the steel drum coating as claimed in claim 2, wherein: the feeding conveying frame (1) comprises side frames A (102) arranged in parallel at two sides, a plurality of conveying rotary rollers A (101) are uniformly distributed between the side frames A (102) along the side frames A (102), and the conveying rotary rollers A (101) are synchronously and synchronously connected with the side frames A (102) in a rotating mode at the same speed through a transmission device A (104) and a driving motor A (103) fixed on the feeding conveying device (1); the tail end of the feeding conveying frame (1) is connected with one side of the starting end of the transition conveying frame (2), the feeding conveying frame (1) and the transition conveying frame (2) are arranged vertically, a notch B (204) matched with the feeding conveying frame (1) is formed in a side frame B (202) of one side, facing the feeding conveying frame (1), of the transition conveying frame (2), a guide roller (205) horizontally rotating around a vertical shaft C is arranged at the position, close to one side of the cover removing conveying device (3), of the top of the side frame B (202), located at the notch B (204), and the distance between the rim edge of the guide roller (205) and the side frame B (202) on the other side and the distance between the side frame A (102) on one side far away from the guide roller (205) are larger than or equal to the diameter of a steel barrel.

4. The automatic capping production line after the steel drum coating as claimed in claim 3, wherein: a side frame A (102) of the feeding conveying frame (1) close to one side of the cover removing conveying device (3) is also provided with a notch A (105) for connecting a standby upper cover production line, a sliding seat A (110) which axially reciprocates along the conveying roller A (101) is arranged at the bottom of the feeding conveying frame (1) and at the position of the notch A (105), the top of the sliding seat A (110) is movably connected with a plurality of material pushing vertical rods (106) up and down, the material pushing upright rods (106) are positioned between two adjacent conveying rotating rollers A (101), the distance between two adjacent material pushing upright rods (106) is smaller than the diameter of the steel drum, the material pushing upright rod (106) is fixed at the end part of a piston rod B of the piston B (108), the piston B (108) is fixed on a sliding seat A (110), and the sliding seat A (110) is fixedly connected with a piston rod A of the piston A fixed on the feeding conveying frame (1).

5. The automatic capping production line after the steel drum coating as claimed in claim 2, wherein: the cover removing conveying device (3) comprises two conveying chains A which are arranged in parallel, two ends of each conveying chain A are in transmission connection with a chain wheel A (301), the chain wheels A (301) are in rotary connection with the cover removing conveying device (3), a driving wheel B (305) is coaxially and fixedly connected with the chain wheel A (301) at one end, the cover removing conveying device (3) is further in rotary connection with a driving wheel A (303) in transmission connection with the driving wheel B (305), the driving wheel A (303) is in transmission connection with a driving motor C (302) fixed on the cover removing conveying device (3) through a transmission device C, the distance between the conveying chains A is smaller than the diameter of the steel barrel, and the conveying chains A are symmetrically located on two sides of a barrel conveying frame A (8);

a horizontal supporting rod (304) is fixed at the top of the cover removing conveying device (3) and between two chain wheels A (301) corresponding to the same conveying chain A, and the horizontal supporting rod (304) is fixed on the cover removing conveying device (3) through an L-shaped vertical rod; a conveying chain A wound on the upper part of the chain wheel A (301) is placed on the horizontal support rod (304);

the cover removing and conveying device (3) further comprises a cover removing device (6) arranged between the two chain wheels A (301) and positioned above the conveying chain A and a steel drum rotating device A (9) arranged on one side, facing the feeding conveying device (1), of the cover removing device (6); the cover removing device (6) comprises a portal frame (601) fixed on the cover removing and conveying device (3), the conveying chain A passes through a portal frame (601), magnetic blocks (606) are respectively arranged on two sides of the top in the portal frame (601), the magnetic blocks (606) horizontally reciprocate along the conveying direction vertical to the chain A, and the magnetic block (606) reciprocates up and down along the vertical direction, two sides of the portal frame (601) are also fixedly provided with cover dropping pipes (607), a sensor B (609) is also arranged at the rear end of the top of the portal frame (601) downwards, a sensor C (610) matched with the steel drum rotating device A (9) is also arranged on one side of the front end of the top of the portal frame (601), the distance between the sensor C (610) and the axis of the steel drum at the position of the steel drum rotating device A (9) is greater than the maximum distance between the edge of a small opening at the top of the steel drum and the axis of the steel drum and is less than the maximum distance between the edge of a large opening at the top of the steel drum and the axis of the steel drum; the movable range of the magnetic block (606) under the action of the corresponding piston E (603) passes through the cover dropping pipe (607) at the corresponding side, a feed inlet of the cover dropping pipe (607) is upward, the height of the edge of the feed inlet at one side of the cover dropping pipe (607) facing the conveying chain A is lower than the height of the edge of the feed inlet at one side of the cover dropping pipe (607) opposite to the conveying chain A, and when the magnetic block (606) moves inwards to the maximum stroke, the magnetic block (606) is respectively positioned above the corresponding barrel mouth of the steel barrel; when the magnetic block (606) moves outwards to the maximum stroke position, the magnetic block (606) is positioned on the outer side of the corresponding cover dropping pipe (607); when the magnetic block (606) moves downwards to the maximum stroke position, the cover cap at the position, corresponding to the bucket opening, of the steel bucket is attracted by the magnetic force of the magnetic block (606); when the magnetic block (606) moves upwards to the maximum stroke position, the height of the bottom of the cover cap absorbed by the bottom of the magnetic block (606) is located between the heights of the edges of the two sides of the feed port of the cover dropping pipe (607).

6. The automatic capping production line after the steel drum coating as claimed in claim 1, is characterized in that: the steel drum stepping conveying device (14) is movably connected to the upper cover conveying device (4), the steel drum stepping conveying device (14) is used for conveying a steel drum positioned on the steel drum rotating device B (13), a steel drum positioned on the air ventilating device (17), a steel drum positioned on the upper cover device (19) and a steel drum positioned on the rainproof cover upper cover device (21) to the position of the air ventilating device (17), the position of the upper cover device (19), the position of the rainproof cover upper cover device (21) and the position of a conveying chain B (1405) respectively and correspondingly, two conveying chains B (1405) are arranged in parallel, the symmetrical axis of the upper cover conveying device (4) is axisymmetric and is positioned between the upper cover conveying device (4) and the discharging conveying device (5), the conveying chain B (1405) is wound on a driving wheel C (1406), and the driving wheel C (1406) is rotatably connected to the upper cover conveying device (4), the upper cover conveying device (4) is also provided with a driving motor F (1407), and the driving motor F (1407) is in transmission connection with a transmission wheel C (1406); the steel drum stepping conveying device (14) comprises a pair of parallel rotating rods (1404) arranged along the conveying direction of the steel drum of the upper cover conveying device (4), the parallel rotating rods (1404) are in sliding connection with two rails C (401) arranged at the top of the upper cover conveying device (4) in parallel along the conveying direction of the steel drum through sliding frames (1403), the parallel rotating rods (1404) are in rotating connection with the sliding frames (1403) around the axes of the parallel rotating rods (1404) through driving motors E (1505) fixed to the upper cover conveying device (4), multiple groups of limiting convex rods (1401) are sequentially and uniformly distributed at the top of the parallel rotating rods (1404) along the length direction of the parallel rotating rods (1404), each group of limiting convex rods (1401) is matched with the bottom of the steel drum, conveying chains B (1405) are located between the rails C (401), and the upper cover conveying device (4) is further fixedly provided with driving motors G (1505), the driving motor G (1505) drives the steel drum stepping conveying device (14) to move along the horizontal sliding rail C (401);

the limiting convex rod (1401) is fixedly connected with the parallel rotating rod (1404) through a strip-shaped connecting piece (1402), and the length direction of the strip-shaped connecting piece (1402) is parallel to the parallel rotating rod (1404);

each group of limiting convex rods (1401) comprises four limiting convex rods (1401), and two limiting convex rods (1401) are symmetrically arranged on each side of the parallel rotating rod (1404); when the first group of limit convex rods (1401) along the conveying direction of the steel drum is correspondingly positioned on the steel drum rotating device B (13), the air ventilation device (17), the upper cover device (19) and the rain-proof cover upper cover device (21) are respectively provided with a corresponding group of limit convex rods (1401); when the first group of limiting convex rods (1401) along the conveying direction of the steel drum is correspondingly positioned on the air ventilation device (17), the upper cover device (19), the rain-proof cover upper cover device (21) and the discharging conveying device (5) are respectively provided with a corresponding group of limiting convex rods (1401);

the parallel rotating rods (1404) are composed of a plurality of rotating rod units connected end to end, the limiting convex rods (1401) are fixedly connected with the rotating rod units respectively, two adjacent rotating rod units are connected through a transmission connecting seat (15), the rotating rod units are connected with supporting vertical frames (1502) arranged at the tops of the connecting seat bases (1501) in a rotating mode respectively, and the transmission connecting seat (15) is connected with the upper cover conveying device (4) in a sliding mode through a track C (401).

7. The automatic capping production line after the steel drum coating as claimed in claim 6, wherein: the steel drum rotating device B (13) comprises rotating bases B (1303) which are symmetrically fixed on the upper cover conveying device (4) and located on two sides of the horizontal sliding rail C (401), clamping bases B are arranged on the rotating bases B (1303) and correspondingly located on the outer side of the steel drum stepping conveying device (14), clamping rollers B (1301) which are horizontally and rotatably connected around the vertical shaft are arranged at the front end and the rear end of the edge of one side, facing the steel drum stepping conveying device (14), of the top of each side of the clamping base B respectively, the positions of the clamping rollers B (1301) on the two sides are corresponding, and the clamping rollers B (1301) of one side of the clamping base B provide driving force through driving motors H (1302) fixed on the clamping bases B.

8. The automatic capping production line after the steel drum coating as claimed in claim 1, is characterized in that: the air ventilation device (17), the upper cover device (19) and the rain-proof cover upper cover device (21) are all arranged at the top of the top frame (11), supporting legs of the top frame (11) are symmetrically arranged at two sides of the upper cover conveying device (4), the top of the top frame (11) is further provided with a sensor D (12) matched with the steel drum rotating device B (13) and a steel drum opening positioning device A (16), the number of the air ventilation device (17) is two in sequence along the conveying direction of the steel drums on the upper cover conveying device (4), and the number of the upper cover device (19) is two in sequence along the conveying direction of the steel drums on the upper cover conveying device; a placing table (22) is further arranged on one side of the top frame (11), and a small barrel mouth cover feeding device (25) and a large barrel mouth cover feeding device (26) which are correspondingly connected with the upper cover device (19) and a rain-proof cover feeding device (27) which is correspondingly connected with the rain-proof cover upper cover device (21) are fixed on the placing table (22);

the sensor D (12) is matched with the steel drum rotating device B (13), and the sensor D (12) is positioned on one side, facing the unmasking conveying device (3), of the steel drum rotating device B (13);

the steel drum bung hole positioner A (16) is matched with a previous air interchanger (17), and the steel drum bung hole positioner A (16) corresponds to a steel drum positioned at the previous air interchanger (17); and the former air ventilation device (17) corresponds to the small bucket opening of the steel bucket at the position;

the latter air ventilation device (17) is matched with the former upper cover device (19), and the latter air ventilation device (17) corresponds to the steel drum positioned at the former upper cover device (19); the latter air interchanger (17) corresponds to the large barrel opening of the steel barrel at the position, and the former upper cover device (19) corresponds to the small barrel opening of the steel barrel at the position;

the inert gas injection device (20) corresponds to the large barrel opening of the steel barrel at the position;

the last upper cover device (19) is matched with the rain-proof upper cover device (21), the last upper cover device (19) corresponds to the large barrel opening of the steel barrel at the position, and the rain-proof upper cover device (21) corresponds to the small barrel opening of the steel barrel at the position; the sensor D (12) is fixed to the end portion of a piston rod K of the piston K (1202) through a mounting connecting plate A (1201), the piston rod K extends out of the piston K (1202) downwards, the piston K (1202) is fixed to the top frame (11), and the distance between the sensor D (12) and the axis of the steel drum at the position of the steel drum rotating device B (13) is larger than the maximum distance between the edge of a small opening at the top of the steel drum and the axis of the steel drum and smaller than the maximum distance between the edge of a large opening at the top of the steel drum and the axis of the steel drum;

when the piston rod K extends out of the piston K (1202) to the maximum stroke position, the sensor D (12) works; when the piston rod K retracts to the maximum stroke position of the piston K (1202), the sensor D (12) stops working;

the steel barrel opening positioning device A (16) comprises two groups of clamps (1601) which are movably connected between the top frame (11) and the upper cover conveying device (4) up and down and are respectively matched with the outer side wall of a large barrel opening and the outer side wall of a small barrel opening on the top of the steel barrel, the clamps (1601) are respectively fixedly connected with the end part of a piston rod L of a piston L (1602), the piston L (1602) is fixed on the top frame (11), and the piston rod L extends out of the piston L (1602) downwards;

when the piston rod L extends out of the piston L (1602) to the maximum stroke position, the height of the clamp (1601) is matched with the height of the steel barrel opening, and when the piston rod L retracts to the maximum stroke position from the piston L (1602), the height of the clamp (1601) is higher than the top of the steel barrel opening;

the air ventilation device (17) comprises a compressed air pipe fixed at the end part of a piston rod M, the piston rod M extends out of a piston M (1701) downwards, and the piston M (1701) is fixed on the top frame (11) through a mounting bracket A; when the piston rod M extends downwards to the maximum stroke position of the piston M (1701), the bottom opening of the compressed air pipe extends into the steel barrel from the opening of the steel barrel, and the compressed air is fed by a compressed air feeding device communicated with the compressed air pipe; when the piston rod M retreats upwards to the maximum stroke position of the piston M (1701), the compressed air inlet device communicated with the compressed air pipe stops air inlet, and the bottom end of the compressed air pipe is higher than the barrel opening of the steel barrel;

the inert gas injection device (20) comprises an inert gas pipe (2001) fixed at the end part of a piston rod N, the piston rod N extends downwards to form a piston N (2002), and the piston N (2002) is fixed on a top frame (11) through a mounting frame B (2004);

when the piston rod N extends downwards out of the piston N (2002) to the maximum stroke position, the bottom opening of the inert gas air pipe (2001) extends into the steel barrel from the large barrel opening of the steel barrel, and the inert gas air inlet device communicated with the inert gas air pipe (2001) is used for air inlet; when the piston rod N retracts upwards to the maximum stroke position of the piston N (2002), the inert gas inlet device communicated with the inert gas pipe (2001) stops gas inlet, and the bottom end of the inert gas pipe (2001) is higher than the barrel opening of the steel barrel;

the feeding device (18) is used for connecting the small bucket opening cover feeding device (25) or the large bucket opening cover feeding device (26) with the upper cover device (19) and the rainproof cover feeding device (27) with the rainproof cover upper cover device (21); the feeding device (18) comprises a conveyor belt (1801) which is in driving connection through a driving motor J (1802), the conveyor belt (1801) is movably connected with a feeding rack of the feeding device (18), one end of the feeding rack is fixed with the top frame (11), and the other end of the feeding rack is communicated and fixed with a discharge hole of a small bucket cover feeding device (25), a large bucket cover feeding device (26) or a rain cover feeding device (27); a limiting baffle (1803) is fixed at the tail end of the feeding belt (1801) of the feeding frame, a pushing block (1805) which is perpendicular to the conveying direction of the conveying belt (1801) is arranged on one side, facing the feeding end of the feeding frame, of the limiting baffle (1803) on the feeding frame, the pushing block (1805) is fixedly connected to the end portion of a piston rod R of a piston R (1806), the piston R (1806) is fixed on one side of the feeding frame, a feeding groove (1804) which is matched and communicated with the conveying belt (1801) is formed in the position, corresponding to the pushing block (1805), of the feeding frame, opposite to the other end of the piston R (1806), and the conveying belt (1801) is communicated with a barrel cover placing groove through a feeding groove (1804);

the feeding end of the feeding frame is fixed on a small bucket opening cover feeding device (25), a large bucket opening cover feeding device (26) or a rain cover feeding device (27) through a supporting plate C (1810), and the discharging end of the feeding frame is fixed with the top frame (11) through a mounting connecting plate D;

the barrel cover placing groove comprises two oppositely arranged groove lobes (1812), the groove lobes (1812) are fixedly connected to the end part of a piston rod Q of a piston Q (1813), and the piston Q (1813) is fixed to the bottom frame of the lifting frame B (1910); when the piston rod Q extends out of the piston Q (1813) to the maximum stroke position, the slotted flaps (1812) move oppositely to be in contact with each other, and at the moment, the slotted flaps (1812) form a barrel cover placing groove;

the feeding frame is further provided with a material stirring rod (1807) at a position between the conveying belt (1801) and the material pushing block (1805), the material stirring rod (1807) is connected to the feeding frame in a swinging mode through a piston S (1808), the piston S (1808) is connected with the feeding frame in a swinging mode, and the end portion of a piston rod S of the piston S (1808) is connected with the material stirring rod (1807);

when the piston rod S retracts to the maximum stroke position of the piston S (1807), the material poking rod (1807) pokes a barrel cover or a rain cover forwards along the conveying direction of the conveying belt (1801), wherein the barrel cover or the rain cover is positioned at the position of the material poking rod (1807) on the conveying belt (1801); when the piston rod S extends out of the piston S (1807) to the maximum stroke position, the material poking rod (1807) pokes a barrel cover or a rain cover on the side, opposite to the material pushing block (1805), of the conveyor belt (1801), which is located on the material poking rod (1807), back to the opposite direction of the conveying direction of the conveyor belt (1801).

9. The automatic capping production line after the steel drum coating as claimed in claim 8, wherein: the upper cover device (19) comprises a cover taking device (1901) which is movably connected to the top frame (11) and used for grabbing the barrel cover, and the top of the cover taking device (1901) is in transmission connection with a rotating shaft of the driving motor I (1902) through a transmission device D;

the driving motor I (1902) is fixed to a lifting frame A (1904), and the lifting frame A (1904) is fixed to the end of a piston rod O (1903);

the piston O (1903) is fixed to a lifting frame B (1910), and the lifting frame B (1910) is fixed to the end portion of a piston rod P (1911); the lifting frame A (1904) is movably connected in the lifting frame B (1910) up and down;

the piston P (1911) is fixed in a door-shaped frame (1917), the door-shaped frame (1917) is fixed at the top of the top frame (11) through a mounting substrate A (1916), and the lifting frame B (1910) is movably connected in the door-shaped frame (1917) up and down;

the piston rod O extends downwards to form a piston O (1903), the piston O (1903) is fixed in the lifting frame B (1910), and the lifting frame A (1904) moves up and down along the lifting frame B (1910) under the action of the piston O (1903) in the lifting frame B (1910);

the piston rod P extends out of the piston P (1911) downwards, the piston P (1911) is fixed to a 'door' -shaped frame (1917), and the lifting frame B (1910) moves up and down along the 'door' -shaped frame under the action of the piston P (1911) in the 'door' -shaped frame (1917);

when the piston rod O retracts upwards to the maximum stroke position from the piston O (1903) and the piston rod P retracts upwards to the maximum stroke position from the piston P (1911), the cover taking device (1901) is positioned above the barrel cover placing groove; when the piston rod O extends out of the piston O downwards to the maximum stroke position and the piston rod P retracts back upwards to the maximum stroke position (1911), the cover taking device (1901) is located at the position of the barrel cover placing groove; when the piston rod O retracts upwards to the maximum stroke position from the piston O (1903) and extends downwards to the maximum stroke position from the piston P (1911), the cover taking device (1901) is positioned above the opening of the steel barrel at the corresponding position on the upper cover conveying device; when the piston rod O extends downwards to the maximum stroke position from the piston O (1903) and the piston rod P extends downwards to the maximum stroke position from the piston P (1911), the height of the cover taking device (1901) is lower than the height of the opening of the steel barrel at the corresponding position on the upper cover conveying device;

the rainproof cover upper cover device (21) comprises a rainproof cover upper cover device (2101) and a steel barrel opening positioning device C which are movably connected below a rainproof cover upper cover top frame (2115), the rainproof cover upper cover device (2101) is fixed at the end part of a piston rod V of a piston V (2103), the piston rod V extends downwards to form the piston V (2103), the piston V (2103) is fixed at the end part of a piston rod W of a piston W (2106), the piston rod W extends downwards to form the piston W (2106), the piston W (2106) is fixed at the bottom of a movable frame (2105), the movable frame (2105) is fixed with a nut pair B (2112), the movable frame (2105) is in transmission connection with a transmission lead screw B (2110) which is rotatably connected to the rainproof cover upper cover top frame (2115) through the nut pair B (2112), the transmission lead screw B (2110) provides driving force through a driving motor K (2111) which is fixed at the rainproof cover upper cover top frame (2115), the rainproof cover taking device (2101) reciprocates between the discharge end of the conveying device (18) of the rainproof cover feeding device (27) and the steel drum opening positioning device C, and the rainproof cover upper cover top frame (2115) is fixedly connected to the top frame (11); the steel drum bung hole positioner C includes two clamp lamella B (2102) of relative setting, clamp lamella B (2102) fixed connection respectively in the piston rod X tip of piston X (2104), piston X (2104) is fixed in installation connecting plate F respectively, installation connecting plate F is fixed in the piston rod Y tip of piston Y (2108), piston rod Y stretches out piston Y (2108) downwards, piston Y (2108) are fixed with roof-rack (11) through installation base plate B (2107).

10. The automatic capping production line after the steel drum coating as claimed in claim 1, is characterized in that: the blanking conveying device (5) comprises side frames C (502) arranged in parallel at two sides, a plurality of conveying rotary rollers C (501) are uniformly distributed among the side frames C (502) along the side frames C (502), and the conveying rotary rollers C (501) are synchronously and rotationally connected with a driving motor L (503) fixed on the blanking conveying device (5) at the same speed through a transmission device E and are connected with the side frames C (502).