CN211437816U - Steel pipe double-end capper - Google Patents

Abstract

The utility model discloses a steel pipe double-head sealing machine, which comprises two sealing head mechanisms and two clamping components; the end socket mechanism comprises a hollow outer main shaft, a shaft sleeve with an eccentric hole is fixedly arranged in the outer main shaft, the inner main shaft is rotatably connected in the eccentric hole of the shaft sleeve, and the inner main shaft rotates around the axis of the outer main shaft; one end of the inner main shaft is fixedly provided with a sealing die; the sealing die is provided with an inwards concave arc-shaped groove; when the steel pipe is sealed, the inner wall of the arc-shaped groove of the sealing die extrudes the end part of the steel pipe; the utility model can realize the rotation of the sealing mould, the steel pipe is fixed, the steel pipe moving phenomenon is avoided, the end socket quality is improved, defective goods are reduced, and the production benefit is improved; the two ends of the steel pipe can be simultaneously sealed, secondary clamping is avoided, and the production efficiency is improved; the end part of the steel pipe can be effectively prevented from being oxidized to generate oxide skin during sealing, and the quality of the end socket is improved; the method is suitable for steel pipes with any length, and has wide application range and high practicability; the extending lengths of the two ends of the steel pipe can be automatically positioned, and the positioning accuracy is improved.

Description

Steel pipe double-end capper

Technical Field

The utility model relates to a steel pipe double-end capper belongs to capper technical field.

Background

In the production process of some special metal round pipe products, the end part of a hollow round pipe needs to be sealed, so that the end part of the hollow round pipe is a sealing mechanism. Pipe end capper on the existing market generally adopts the frock to press from both sides tight steel pipe to make the steel pipe rotatory, when sealing, at first heat the steel pipe end to the red hot state, then rotate through the swing arm and drive depended wheel or profiling and seal, seal current capper and have following not enough:

1. the steel pipe of the existing sealing machine is rotated, a sealing mould is not moved, the steel pipe can generate a play phenomenon when being rotated, the condition that the end part is extruded unevenly is easily caused when the sealing is carried out, a small gap is easily generated on a sealing head, the working medium leakage can be caused after a long time, the service life of the steel pipe is shortened, the sealing effect is reduced, and the defective rate is high.

2. The existing sealing machine is generally operated in a single-end mode, when two ends of a steel pipe need to be sealed, the sealing head at one end needs to be firstly finished, then the steel pipe is taken down, and the sealing at the other end is carried out after the steel pipe is clamped for the second time, so that the steel pipe sealing head mode needs to be clamped for the second time, the time consumption is high, and the production efficiency is low.

3. The existing sealing machine needs to heat the steel pipe in the sealing process, the red hot steel pipe is exposed in the air and can be oxidized to generate oxide skin, the oxide skin can be extruded into the sealing head in the extruding process, the sealing head effect is influenced, and the reduction is realized.

4. The existing sealing machine can only aim at steel pipes with one length or a plurality of lengths, can not adapt to steel pipes with any length, and has small application range and low practicability.

5. When the existing sealing machine clamps and fixes a steel pipe, the length of the steel pipe extending out of the clamping mechanism is generally determined manually, so that the extending lengths of two ends of the steel pipe are different when the steel pipe is clamped, the positioning is inaccurate, and the sealing effect is influenced.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide a steel pipe double-end capper, can realize following purpose:

1. the sealing die can rotate, the steel pipe is fixed, the steel pipe moving phenomenon is avoided, the end socket quality is improved, defective products are reduced, and the production benefit is improved.

2. Can realize the steel pipe both ends head simultaneously, avoid the secondary clamping, improve production efficiency.

3. The end part of the steel pipe can be effectively prevented from being oxidized to generate oxide skin during sealing, and the quality of the end socket is improved.

4. Can be applicable to the steel pipe of arbitrary length, application range is wide, and the practicality is high.

5. The extending lengths of the two ends of the steel pipe can be automatically positioned, and the positioning accuracy is improved.

For solving the technical problem, the utility model discloses a following technical scheme: a steel pipe double-end sealing machine comprises two sealing head mechanisms and two clamping components which are respectively arranged on a machine body in a sliding mode; the two clamping components respectively clamp and fix two ends of the steel pipe, and the two end sealing mechanisms respectively seal the two ends of the steel pipe simultaneously.

Further, the end sealing mechanism comprises a hollow outer main shaft, a shaft sleeve with an eccentric hole is fixedly arranged in the outer main shaft, an inner main shaft is rotatably connected in the eccentric hole of the shaft sleeve, and the inner main shaft rotates around the axis line of the outer main shaft while rotating; a sealing die is fixedly arranged at one end of the inner main shaft; the sealing die is provided with an inwards concave arc-shaped groove, and the axial lead of the arc-shaped groove is the same as that of the inner main shaft; when the steel pipe is sealed, the inner wall of the arc-shaped groove of the sealing die extrudes the end part of the steel pipe.

Furthermore, the clamping assembly comprises a pressing mechanism for pressing and fixing the steel pipe, a steel pipe positioning mechanism for positioning the extending length of the end part of the steel pipe, a support positioning mechanism for determining the initial position of the end sealing mechanism and a locking mechanism for locking and fixing the pressing mechanism.

Furthermore, a protective gas cover is fixedly sleeved on the outer main shaft; and the sealing die is provided with a protective gas outlet which is communicated to the bottom of the concave arc-shaped groove, and the protective gas outlet is communicated with a protective gas inlet on the protective gas cover through an internal gas channel.

Furthermore, the pressing mechanism comprises an upper pressing die and a lower pressing die, and the upper pressing die is fixed on the support; the pressing lower die is fixed on the lower die base plate; the bracket and the lower die base plate are respectively arranged on the machine body in a sliding manner; the support and the lower die seat plate are fixedly connected through a connecting plate.

Furthermore, the steel pipe positioning mechanism comprises a positioning shaft, and the positioning shaft is arranged on the pressing mechanism at a position corresponding to the extending position of the steel pipe; when the end part of the steel pipe is positioned, the side part of the positioning shaft is abutted against the end part of the steel pipe; the positioning shaft is vertically arranged in a sliding mode.

Furthermore, the other end of the inner main shaft is in transmission connection with the connecting shaft through a cross universal coupling; the connecting shaft is in transmission connection with the inner spindle motor through a belt and a belt pulley; the outer spindle is in transmission connection with an outer spindle motor through a belt and a belt pulley; the outer main shaft is rotatably connected in the mounting sleeve through a bearing.

Further, the bracket positioning mechanism is arranged on the side part of the bracket; the support positioning mechanism comprises a positioning inserted rod, the positioning inserted rod is transversely arranged in a rod sleeve in a sliding mode, and the rod sleeve transversely penetrates through the support; the end part of the positioning inserted bar can be fixedly inserted into or separated from the positioning seat; the positioning seat is fixedly arranged on the main shaft bracket.

Further, the locking device comprises a locking block; the locking block is fixedly connected to the side part of the bracket; the bottom of the locking block is provided with a long slot; a locking bolt is arranged on one side, perpendicular to the long groove, of the locking block; the locking bolt penetrates into the long groove of the locking block; the locking block is arranged on the fixing plate in a sliding manner through the long-shaped groove; a locking plate is arranged in the long groove of the locking block; when locking, the end part of the locking bolt tightly pushes the locking plate and the fixing plate.

Furthermore, the end sealing mechanism further comprises a heating system, the heating system is fixed on the main shaft support, the heating system comprises an induction heater, an induction coil is arranged on the induction heater, and the induction coil is arranged at the front end of the sealing die; the induction coil is of a circular ring structure.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

1. the sealing die can rotate, the steel pipe is fixed, the steel pipe moving phenomenon is avoided, the end socket quality is improved, defective products are reduced, and the production benefit is improved.

2. Can realize the steel pipe both ends head simultaneously, avoid the secondary clamping, improve production efficiency.

3. The end part of the steel pipe can be effectively prevented from being oxidized to generate oxide skin during sealing, and the quality of the end socket is improved.

4. Can be applicable to the steel pipe of arbitrary length, application range is wide, and the practicality is high.

5. The extending lengths of the two ends of the steel pipe can be automatically positioned, and the positioning accuracy is improved.

6. The upper and lower compression dies can be synchronously adjusted, the alignment of the two compression dies is ensured, the time for replacing different steel pipes is less, and the efficiency is high; and the initial position of the sealing mechanism is automatically adjusted after the steel pipe is replaced.

7. The utility model discloses also can carry out the single-end to the steel pipe and seal, the practicality is strong.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

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

FIG. 2 is a schematic of the feed system;

FIG. 3 is a schematic structural view of a clamping system;

FIG. 4 is a schematic view of the hold-down mechanism;

FIG. 5 is a top view of the hold-down mechanism;

FIG. 6 is a schematic structural view of the locking mechanism;

FIG. 7 is a schematic structural view of a stent positioning mechanism;

FIG. 8 is a schematic structural view of a steel pipe positioning mechanism;

FIG. 9 is a schematic structural view of the capping mechanism;

FIG. 10 is a cross-sectional view of the capping mechanism;

FIG. 11 is a schematic structural view of a heating system;

FIG. 12 is an enlarged view at A of FIG. 10;

in the figure, the position of the upper end of the main shaft,

1-machine body, 2-feeding system, 3-clamping system, 4-end sealing mechanism, 5-control box, 6-control cabinet, 7-feeding motor, 8-motor flange, 9-lead screw front support, 10-ball screw, 11-nut, 12-lead screw rear support, 13-linear guide rail, 131-slide block, 14-fixing plate, 15-support, 151-bottom beam, 16-pressing mechanism, 161-pressing oil cylinder, 162-oil cylinder flange, 163-connecting nut, 164-linear bearing, 165-fixing piece, 166-connecting block, 167-pressing upper die, 168-pressing lower die, 169-connecting plate, 1610-limiting support plate, 1611-limiting shaft seat plate, 1612-limiting shaft, 1613-lower die seat plate, 1614-sliding shaft, 17-locking mechanism, 171-locking block, 172-adjusting backing plate, 173-locking plate, 174-locking bolt, 18-bracket positioning mechanism, 181-positioning inserted rod, 182-rod sleeve, 183-sensor, 184-sensor bracket, 185-positioning seat, 19-steel tube positioning mechanism, 191-positioning shaft, 192-dust ring, 193-sliding sleeve, 194-connecting plate, 195-fixing sleeve, 196-cylinder, 20-spindle bracket, 201-bottom plate, 202-vertical supporting plate, 21-inner spindle assembly, 211-inner spindle motor, 212-inner spindle motor mounting plate, 213-inner spindle driving pulley, 214-inner spindle synchronous belt, 215-inner spindle driven pulley, 216-connecting shaft, 217-cross universal coupling, 218-inner spindle, 2181-third protection air hole, 2182-central air hole, 219-die connecting disc, 2110-sealing die, 2111-bearing seat, 22-outer spindle assembly, 221-outer spindle motor, 222-outer spindle driving pulley, 223-outer spindle synchronous belt, 224-outer spindle driven pulley, 225-mounting sleeve, 2251-annular water tank, 2252-sealing groove, 226-bearing, 227-outer spindle, 2271-first protection air hole, 228-bearing gland, 229-protection air cover, 2291-protection air inlet, 2292-first groove, 2210-heat sink, 2211-dust cover, 2212-fixing plate, 23-heating system, 231-mounting bracket, 232-induction heater, 233-hoop, 24-shaft sleeve, 241-second groove, 242-second protection air hole, 25-support riser, 251-cooling water channel, 252-water inlet, 253-water outlet, 26-first air transmission channel, 27-second air transmission channel and 28-protection air outlet.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiment 1 double-end steel pipe sealing machine

As shown in fig. 1-12, the utility model provides a steel tube double-end sealing machine, which comprises a machine body 1, wherein the machine body 1 is a rectangular frame structure, a feeding system 2 is fixedly arranged on the upper part of the machine body 1, and a clamping system 3 and a sealing head mechanism 4 are arranged on the feeding system 2 in a sliding manner; the clamping system 3 is used for compressing and fixing the steel pipe; and the end enclosure mechanism 4 is used for rotating the die to seal the steel pipe.

The sealing machine further comprises a control box 5, a control cabinet 6 and a hydraulic system.

The feeding system 2 comprises a feeding assembly and a sliding rail assembly; the feeding assembly is used for driving the end socket mechanism 4 to move left and right; the number of the feeding assemblies is two, and the two feeding assemblies are respectively arranged at two ends of the machine body 1; the two feeding assemblies are mutually and symmetrically arranged; the feeding assembly comprises a feeding motor 7 and a ball screw 10; the feeding motor 7 is fixedly connected to a lead screw front support 9 through a motor flange 8; the output shaft end of the feeding motor 7 penetrates through the motor flange 8 to be connected with the ball screw 10, the front end of the ball screw 10 is rotatably connected to the front screw support 9, the rear end of the ball screw 10 is rotatably connected to the rear screw support 12, and the front screw support 9 and the rear screw support 12 are fixedly arranged on the machine body 1.

A nut 11 is connected to the ball screw 10 in a threaded manner; the nut 11 is of a rectangular structure; the upper surface of the nut 11 is provided with a mounting hole; the mounting hole is used for being fixedly connected with the end socket mechanism 4.

The sliding rail assembly is used for sliding the clamping system 3 left and right; the slide rail component comprises a linear guide rail 13; the number of the linear guide rails 13 is four; the four linear guide rails 13 are arranged in parallel; the four linear guide rails 13 are arranged on two sides of the feeding assembly in pairs; the linear guide rail 13 is fixedly arranged on the machine body 1; each linear guide rail 13 is provided with a sliding block 131 in a sliding manner, and the number of the sliding blocks 131 is multiple; the sliding block 131 is used to connect with other components, so that the components connected with the sliding block 131 can slide along the linear sliding rail 13.

The clamping system 3 is arranged on the machine body 1 in a sliding manner; the two clamping assemblies are respectively used for clamping two ends of the steel pipe; the two clamping components are respectively arranged at two ends of the machine body 1; the clamping assembly comprises a support 15, a pressing mechanism 16, a locking mechanism 17, a support positioning mechanism 18 and a steel pipe positioning mechanism 19; the support 15 is a frame structure formed by welding section steel, and the bottom of the support 15 is arranged on the two inner linear guide rails 13 in a sliding manner through sliders 131; the number of the brackets 15 is two; the two brackets 15 are symmetrically arranged.

The pressing mechanism 16 comprises an upper pressing die 167, a lower pressing die 168 and a pressing oil cylinder 161, wherein the upper pressing die 167 is arranged right above the lower pressing die 168; the pressing upper die 167 and the pressing lower die 168 are both of cuboid structures, long grooves used for placing steel pipes are formed in the opposite surfaces of the pressing upper die 167 and the pressing lower die 168, and the cross sections of the long grooves are semicircular.

The pressing upper die 167 is driven by the pressing oil cylinder 161 to move up and down, and specifically, the top of the pressing upper die 167 is fixedly connected with the connecting block 166; the top end of the connecting block 166 is fixedly connected to the bottom end of the sliding shaft 1614; the sliding shaft 1614 is slidably connected to the fixing member 165 through the linear bearing 164, and the fixing member 165 is a rectangular parallelepiped structure with a hollow interior; the fixing member 165 is vertically disposed; the side part of the fixing piece 165 is fixedly connected with the bracket 15; the top end of the sliding shaft 1614 is fixedly connected with a piston rod of the pressing oil cylinder 161 through a connecting nut 163; the pressing oil cylinder 161 is vertically and fixedly connected to the top of the fixing piece 165 through an oil cylinder flange 162; the cylinder flange 162 is a cylindrical structure, and a piston rod of the pressing cylinder 161 moves up and down in an inner cavity of the cylinder flange 162.

The pressing lower die 168 is fixedly arranged on the lower die base plate 1613; the lower die base plate 1613 is slidably arranged on the two outer linear guide rails 13; the lower die base plate 1613 is of a cuboid structure; two ends of the lower die base plate 1613 are fixedly provided with connecting plates 169; the connecting plate 169 is fixedly connected to the frame 15, so that the upper pressing mold 167 and the lower pressing mold 168 fixed to the frame 15 slide synchronously.

A limiting support plate 1610 is fixedly arranged on one side of the lower die base plate 1613 close to the end of the clamping steel pipe, a limiting shaft base plate 1611 is fixedly arranged on the side of the limiting support plate 1610, and a limiting shaft 1612 is fixedly arranged on the limiting shaft base plate 1611; the limiting shaft 1612 can prevent the sealing mechanism 4 from colliding with the pressing mechanism 16 when the sealing mechanism is excessively moved, and plays a role in protection.

When the pressing mechanism 16 works, the pressing cylinder 161 drives the pressing upper die 167 to move downwards through the sliding shaft 1614, and the pressing upper die cooperates with the pressing lower die 168 to clamp the steel pipe placed in the long groove of the pressing lower die 168; and, the upper pressing die 167 slides along the two outer linear guide rails 13 through the bracket 15, and the lower pressing die 168 slides along the two inner linear guide rails 13 through the lower die base plate 1613, so that the positions of the upper pressing die 167 and the lower pressing die 168 on the linear guide rails 13 are adjustable to adapt to steel pipes with different lengths, and the lower die base plate 1613 is fixedly connected with the bracket 15 through the connecting plate 169, so that the upper pressing die 167 and the lower pressing die 168 can synchronously slide on the linear guide rails 13, and alignment is ensured.

The steel pipe positioning mechanism 19 is used for positioning the end position of the steel pipe; a steel pipe positioning mechanism 19 is arranged on one side of the pressing mechanism 16 close to the end part of the clamped steel pipe, the steel pipe positioning mechanism 19 comprises a positioning shaft 191, and the positioning shaft 191 is of a cylindrical structure; the positioning shaft 191 is vertically arranged; the positioning shaft 191 is vertically intersected with the end of the clamping steel pipe.

The positioning shaft 191 can slide up and down; the positioning shaft 191 is sleeved in the sliding sleeve 193 in a sliding manner, a through hole penetrating up and down is formed in the sliding sleeve 193, and the positioning shaft 191 slides up and down in the through hole penetrating through the sliding sleeve 193; a dustproof ring 192 is arranged in the top port of the sliding sleeve 193, and the positioning shaft 191 penetrates through the dustproof ring 192; the bottom end of the sliding sleeve 193 is inserted and fixed on the connecting plate 194; the connecting plate 194 is provided with an installation hole for installing a sliding sleeve 193, and the sliding sleeve 193 is inserted and fixed in the installation hole; the connecting plate 194 is fixedly mounted to the bottom of the lower mold base plate 1613 so that the steel pipe positioning mechanism 19 moves with the pressing mechanism 16.

The bottom end of the positioning shaft 191 is fixedly connected with an expansion link of the air cylinder 196; the air cylinder 196 is fixedly mounted on the connecting plate 194 through a fixing sleeve 195, a hole which is through up and down is formed in the fixing sleeve 195, and an expansion rod of the air cylinder 196 penetrates through the hole which is through up and down in the fixing sleeve 195 and is fixedly connected with the positioning shaft 191.

When the steel pipe clamping device is used, after a steel pipe is placed into the clamping mechanism 16, the air cylinder 196 is started, the air cylinder 196 extends out to drive the positioning shaft 191 to move upwards to a steel pipe placing position along the sliding sleeve 193, then the end position of the steel pipe is enabled to be propped against the side portion of the positioning shaft 191 to accurately position the end position of the steel pipe, then the clamping mechanism 16 acts to clamp the steel pipe, and accurate positioning of the end position of the steel pipe in the steel pipe clamping process is guaranteed.

The number of the locking mechanisms 17 is two, and the two locking mechanisms 17 are respectively arranged on two sides of the bracket 15; the locking mechanism 17 is used for locking the bracket 15, and the pressing mechanism 16 is fixed at a specified position of the linear guide rail 13 through the locking bracket 15; the locking mechanism 17 comprises a locking block 171, a locking bolt 174 and a fixing plate 14; the locking block 171 is of a rectangular parallelepiped structure; the locking block 171 is fixed to the side of the bracket 15 by bolts.

A long slot is formed in the bottom of the locking block 171, and the cross section of the long slot is rectangular; a locking bolt 174 is arranged on one side of the locking block 171, which is perpendicular to the elongated slot; the locking bolt 174 penetrates into the elongated slot of the locking block 171.

The locking block 171 is slidably arranged on the fixing plate 14 through the long slot; a locking plate 173 is arranged in the long groove of the locking block 171; the locking is performed by tightening the locking bolt 174 to press the end of the locking bolt 174 against the locking plate 173 and the fixing plate 14 to fix the bracket 15 and thus the position of the pressing mechanism 16.

An adjusting backing plate 172 is arranged between the locking block 171 and the bracket 15, and the adjusting backing plate 172 is used for adjusting the position of the locking block 171 to ensure that the side surface of the long-shaped groove of the locking block 171 is attached to the fixing plate 14.

The support positioning mechanism 18 is used for determining the initial relative position relationship between the pressing mechanism 16 and the end sealing mechanism 4, and is mainly used for replacing steel pipes with different lengths.

The bracket positioning mechanism 18 is arranged at the side part of the bracket 15; a bottom beam 151 is arranged at the bottom of the bracket 15, the bottom beam 151 is a rectangular steel pipe, the bracket positioning mechanism 18 is arranged at the side part of the bottom beam, the bracket positioning mechanism 18 comprises a positioning insertion rod 181, and the positioning insertion rod 181 comprises a shaft handle part and a shaft part; the shank portion 1811 is fixedly connected with the shaft portion 1812.

The positioning inserted rod 181 transversely penetrates through the bottom beam 151; a rod sleeve 182 is transversely and fixedly arranged on the bottom beam 151, and the rod sleeve 182 is a stepped shaft with a hollow interior; the big end of the rod sleeve 182 is fixed with the bottom beam 151 through a bolt; the shaft part of the positioning insertion rod 181 penetrates through the hollow cavity of the rod sleeve 182 and can slide along the hollow cavity;

a positioning seat 185 is fixedly arranged at the inner side part of the bottom beam 151 at a certain distance from the rod sleeve 182, and the positioning seat 185 is fixedly arranged on the spindle bracket 20 of the end socket mechanism 4; the positioning seat 185 is provided with an insertion hole, and the axial lead of the insertion hole is the same as that of the hollow cavity of the rod sleeve 182.

When the bracket 15 is positioned, the end of the shaft part of the positioning inserted link 181 is inserted into the insertion hole on the positioning seat 185; when the positioning is not needed, the shaft handle part of the positioning inserted bar 181 is pulled, so that the end of the shaft part of the positioning inserted bar 181 is separated from the insertion hole of the positioning seat 185.

A sensor 183 is arranged between the positioning seat 185 and the bottom beam 151, and the sensor 183 is used for monitoring whether the positioning inserted rod 181 is separated from the positioning seat 185 or not so as to ensure that the end socket mechanism 4 moves smoothly; when the sealing mechanism 4 moves, whether the positioning inserted bar 181 is separated from the positioning seat 185 is firstly monitored through a sensor, if the positioning inserted bar 181 is separated from the positioning seat 185, the sealing mechanism 4 can move, and if the positioning inserted bar 181 is not separated from the positioning seat 185, the positioning inserted bar 181 is firstly pulled out from the positioning seat 185, and then the sealing mechanism 4 moves.

The sensor 183 is connected with the control cabinet 6, and the sensor 183 is arranged right above a path through which the shaft part of the positioning insertion rod 181 passes; the sensor 183 is fixedly disposed on the sensor bracket 184, and the sensor bracket 184 is fixedly disposed on the bottom beam 151.

When the clamping system 3 works, firstly, a steel pipe is placed in the long groove of the lower pressing die 168, then the steel pipe positioning mechanism 19 acts, the air cylinder 196 drives the positioning shaft 191 to lift, the end part of the steel pipe is positioned at the side part of the positioning shaft 191, and then the hydraulic oil cylinder 161 drives the lower pressing die to move downwards, so that the steel pipe is fixed between the two dies.

The number of the end sealing mechanisms 4 is two, and the two end sealing mechanisms 4 are used for sealing two ends of the steel pipe simultaneously; the end socket mechanism 4 comprises an inner main shaft assembly 21, an outer main shaft assembly 22 and a heating system 23; the inner main shaft assembly 21, the outer main shaft assembly 22 and the heating system 23 are all fixedly mounted on a main shaft support 20, the main shaft support 20 comprises a bottom plate 201 and a vertical support plate 202, and the vertical support plate 202 is fixedly welded on the bottom plate 201; the number of the vertical support plates 202 is two, and the two vertical support plates 202 are arranged at a certain distance; the bottom plate 201 is fixedly connected with a nut 11 of the feeding system 2, and the nut 11 moves on the ball screw 10 to drive the bottom plate 201 to move together, so that the spindle support 20 drives the whole head sealing mechanism 4 to move together.

The inner spindle assembly 21 comprises an inner spindle 218, an inner spindle motor 211 and a sealing die 2110; the inner spindle motor 211 is fixed on the inner spindle motor mounting plate 212; the inner spindle motor mounting plate 212 is fixedly mounted on the spindle bracket 20; an output shaft end of the inner spindle motor 211 is provided with an inner spindle driving belt pulley 213; the inner spindle driving pulley 213 is in transmission connection with an inner spindle driven pulley 215 through an inner spindle synchronous belt 214; the inner spindle driven pulley 215 is fixed at one end of a connecting shaft 216, the connecting shaft 216 penetrates through and is rotatably connected to a bearing seat 2111, and the bearing seat 2111 is fixedly connected to the upper part of the vertical support plate 202; the other end of the connecting shaft 216 is connected with a cross universal coupling 217, the other end of the cross universal coupling 217 is connected with an inner spindle 218, and a connecting disc 219 is fixedly sleeved at the end part of the inner spindle 218; a sealing die 2110 is fixedly connected to the connecting disc 219, and the sealing die 2110 is used for sealing the end of the steel pipe.

The sealing die 2110 is provided with an inwards concave arc-shaped groove, and the axial line of the arc-shaped groove is the same as that of the inner spindle 218; when the steel pipe is sealed, the end of the heated steel pipe is inserted into the arc-shaped groove, and the inner wall of the arc-shaped groove of the sealing die 2110 extrudes the end of the steel pipe along with the rotation of the inner spindle 218 to form the sealed end.

The outer spindle assembly 22 includes an outer spindle 227, an outer spindle motor 221, and a mounting sleeve 225; a through hole is formed in the outer main shaft 227; one end of the through hole of the outer main shaft 227 is fixedly provided with a shaft sleeve 24, and the shaft axis of the shaft sleeve 24 is the same as that of the outer main shaft 227; an eccentric hole is formed in the shaft sleeve 24; the inner main shaft 218 is rotatably connected in an eccentric hole of the shaft sleeve 24 through a bearing, so that the inner main shaft 218 and the outer main shaft 227 are eccentrically arranged; the eccentric distance between the inner spindle 218 and the outer spindle 227 is changed according to the pipe diameter and the material, so as to achieve the best sealing quality.

The universal joint cross 217 is sleeved at the other end of the through hole of the outer main shaft 227, and the universal joint cross 217 can freely rotate in the through hole of the outer main shaft 227.

The outer main shaft 227 is rotatably connected in the mounting sleeve 225 through a bearing 226; an installation flange is arranged at the end part of the installation sleeve 225; a bearing gland 228 is fixedly arranged outside the bearing 226; the bearing gland 228 is fixedly connected with a mounting flange of the mounting sleeve 225; the mounting sleeve 225 is fixedly mounted on the supporting vertical plate 25, and the mounting sleeve 225 passes through the supporting vertical plate 25 and is fixedly connected with the supporting vertical plate 25 through a mounting flange; the supporting vertical plate 25 is vertically fixed on the bottom plate 201.

An outer spindle driven pulley 224 is fixedly arranged at one end of the outer spindle 227 close to the cross universal coupling 217, and the outer spindle driven pulley 224 is in transmission connection with an outer spindle driving pulley 222 through an outer spindle synchronous belt 223; the outer spindle driving pulley 222 is fixedly arranged at the output end of the outer spindle motor 221; the outer spindle motor 221 is fixedly mounted on the dust cover 2211; the dust cover 2211 is covered on the outer main shaft driving pulley 222, and the dust cover 2211 is fixedly connected to the fixing plate 2212; the fixing plate 2212 is fixedly arranged on the vertical plate 202.

The heating system 23 is arranged at one end close to the sealing die 2110, the heating system 23 comprises an induction heater 232, an induction coil 234 is arranged on the induction heater 232, the induction coil 234 is of a circular ring structure, and the induction coil 234 is arranged at the front end of the sealing die 2110 so as to heat the end of the steel pipe; the induction heater 232 is fixedly arranged on the mounting frame 231 through an anchor ear 233; the mounting frame 231 is fixedly disposed on the spindle bracket 20.

When the end socket mechanism 4 works, the heating system 23 is started firstly to heat the end part of the steel pipe; after heating is finished, the inner spindle motor 211 is started, the connecting shaft 216 is driven to rotate through the transmission connection of the synchronous belt and the belt pulley, and the connecting shaft 216 drives the inner spindle 218 to rotate through the cross universal coupling 217; simultaneously starting an outer spindle motor 221, and driving an outer spindle 227 to rotate through the transmission connection of a synchronous belt and a belt pulley; because the inner spindle 218 is rotatably connected in the eccentric hole of the shaft sleeve 24, the shaft sleeve 24 is fixed in the inner hole of the outer spindle 227, so that the inner spindle 218 and the outer spindle 227 are eccentric, and the inner spindle 218 drives the sealing die 2110 to rotate and simultaneously rotate around the axis of the outer spindle 227; meanwhile, the feeding system 2 drives the end sealing mechanism 4 to advance, so that the inner wall of the arc-shaped groove of the rotating sealing die 2110 and the heated steel pipe are extruded, and the purpose of sealing is achieved; after the sealing is finished, the system 2 drives the end sealing mechanism 4 to retreat, the end sealing mechanism 4 stops rotating, and the feeding system 2 drives the end sealing mechanism 4 to return to the initial position to wait for the next processing.

In order to prevent the outer spindle 227 from generating heat, an annular water tank 2251 and a sealing groove 2252 are formed on the outer circumferential surface of the mounting sleeve 225 contacting the support riser 25, and the number of the annular water tanks 2251 and the number of the sealing grooves 2252 are two; two annular water grooves 2251 are disposed between the two sealing grooves 2252, and sealing rings are disposed in the sealing grooves 2252 to prevent the annular water grooves 2251 from leaking water.

A cooling water channel 251 is arranged in the supporting vertical plate 25 and communicated with an annular water tank 2251; the cooling water channel is communicated with a water inlet 252 and a water outlet 253, and the water inlet 252 and the water outlet 253 are arranged at the upper part of the supporting vertical plate 25.

During operation, cooling water enters the cooling water channel 251 through the water inlet 252 and then flows into the annular water groove 2251, so that the rotating connection part, which is easy to generate heat, of the outer spindle 227 can be cooled, overheating of parts such as bearings is prevented, and equipment is protected.

In order to prevent the inner spindle 218 from generating heat, a heat dissipation device 2210 is fixedly arranged on the outer spindle 227 corresponding to the rotational connection position of the inner spindle 218 and the shaft sleeve 24, and the heat dissipation device 2210 is made of aluminum alloy, so that the heat dissipation effect is good.

In order to reduce the head of the steel pipe from being oxidized by heating, the sealing machine is further provided with a protective gas system, the protective gas system comprises a protective gas cover 229, and the protective gas cover 229 is fixedly sleeved at one end, close to the sealing die 2110, of the outer main shaft 227; the protective gas cover 229 is provided with a protective gas inlet 2291, and the protective gas inlet 2291 is externally connected with a protective gas supply system; a first groove 2272 is formed on the inner circumferential surface of the shielding gas cover 229, which is in contact with the outer spindle 227, and the first groove 2272 is communicated with a shielding gas inlet 2291; sealing rings are arranged on two inner sides of the first groove 2272, and a first gas transmission channel 26 is formed by the groove 2272, the sealing rings in the groove 2272 and the outer peripheral surface of the outer main shaft 227; a first protection air hole 2271 is formed in the outer main shaft 227, the first protection air hole 2271 is a circular hole, and the first protection air hole 2271 transversely penetrates through the side wall of the outer main shaft 227; the air inlet end of the first protection air hole 2271 is communicated with the first air transmission channel 26;

a second groove 241 and a second protection air hole 242 are formed in the shaft sleeve 24, the second groove 241 is formed in the outer peripheral surface of the shaft sleeve 24, and the second groove 241 is communicated with a first protection air hole 2271; the second protection air hole 242 crosses the side wall of the shaft sleeve 24, and the air inlet end of the second protection air hole 242 is communicated with the second groove 241; two sealing rings are arranged between the shaft sleeve 24 and the inner main shaft 218; the two sealing rings, the inner wall of the eccentric hole of the shaft sleeve 24 and the outer peripheral surface of the inner main shaft 218 form a second gas transmission channel 27; the second gas transmission channel 27 is communicated with the gas outlet end of the second protection gas hole 242.

A third protective air hole 2181 and a central air hole 2182 are formed in the inner main shaft 218; the third protection air holes 2181 are perpendicular to the axis of the inner main shaft 218, the number of the third protection air holes 2181 is multiple, and the plurality of the third protection air holes 2181 are circumferentially and uniformly arranged; the air inlet end of the third protective air hole 2181 is communicated with the second air transmission channel 27; the central air hole 2182 is formed along the central axis of the inner spindle 218, and the air inlet end of the central air hole 2182 is communicated with the third protection air hole 2181;

the first gas transmission channel 26, the first protection gas hole 2271, the second groove 241, the second protection gas hole 242, the second gas transmission channel 27, the third protection gas hole 2181 and the central gas hole 182 are sequentially communicated to form an internal gas channel.

The sealing die 2110 is provided with a through protective gas outlet 28 on a central axis, one end of the protective gas outlet 28 is communicated with the central gas hole 2182, the other end of the protective gas outlet 28 is arranged at the bottom of the arc-shaped groove of the sealing die 2110, protective gas is sprayed out from the protective gas outlet 28 to protect the heated steel pipe, and the protective gas is inert gas.

The utility model discloses a theory of operation:

when the steel pipe positioning mechanism starts to work, a steel pipe is placed in the pressing die 168, then a piston rod of an air cylinder 196 in the steel pipe positioning mechanism 19 extends out to drive the positioning shaft 191 to lift, and one end, to be sealed, of the steel pipe is pushed against the side part of the positioning shaft 191 to be positioned; then, the hydraulic cylinder 161 drives the pressing upper die 167 to move downwards to press and fix the steel tube. Then the feeding system 2 is connected to the main shaft bracket 20 through a nut 11, and the feeding motor 7 drives the ball screw 10 to rotate, so that the nut 11 drives the end socket mechanism 4 to advance to a heating position through the main shaft bracket 20; then starting the heating system 23 to heat the end part of the steel pipe; after heating is completed, the inner spindle motor 211 and the outer spindle motor 221 are started to respectively drive the inner spindle 218 and the outer spindle 227 to rotate, and simultaneously, under the action of the shaft sleeve 24, the inner spindle 218 rotates in an autorotation manner and simultaneously rotates around the axis of the outer spindle; meanwhile, the feeding system 2 drives the end sealing mechanism 4 to advance, the rotary sealing die 2110 is used for sealing the red hot steel pipe, after sealing is completed, the feeding system 2 drives the end sealing mechanism 4 to retreat, the end sealing mechanism 4 stops rotating, and the feeding system 2 drives the end sealing mechanism 4 to return to the initial position to wait for next processing.

The utility model discloses steel pipe double-end capper also can only use one end to carry out the single-end and seal.

In the sealing process, the inner spindle 218 and the outer spindle 227 are eccentrically arranged through the shaft sleeve 24, so that the inner spindle drives the sealing die 2110 to rotate and simultaneously rotates around the axis of the outer spindle 227, the inner wall of the arc-shaped groove of the sealing die 2110 and the heated steel pipe are extruded, and the purpose of sealing is achieved.

When adjusting pipes of different specifications, firstly loosening the locking mechanism 17, driving the end socket mechanism 4 to a proper position by the feeding system 2, then pushing the bracket 15 until the pin 181 in the bracket positioning mechanism 18 can be inserted into the positioning seat 185 fixed on the main shaft bracket 20, then locking the locking mechanism 17, and positioning the bracket 15; then, the pin 181 is pulled out, so that the bracket 15 is disconnected from the head sealing mechanism 4, thereby ensuring that the head sealing mechanism 4 moves smoothly.

The utility model can realize the rotation of the sealing mould, the steel pipe is fixed, the steel pipe moving phenomenon is avoided, the end socket quality is improved, defective goods are reduced, and the production benefit is improved; the end sockets at two ends of the steel pipe can be simultaneously sealed, secondary clamping is avoided, production efficiency is improved, oxidation of the end part of the steel pipe during sealing can be effectively avoided to generate oxide skin, and end socket quality is improved; the device can be suitable for steel pipes with any length, and has wide application range and high practicability; the extending lengths of the two ends of the steel pipe can be automatically positioned, and the positioning accuracy is improved; the upper and lower compression dies can be synchronously adjusted, the alignment of the two compression dies is ensured, the time for replacing different steel pipes is less, and the efficiency is high; and automatically adjusting the initial position of the sealing mechanism after the steel pipe is replaced; the utility model discloses also can carry out the single-end to the steel pipe and seal, the practicality is strong.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims (8)

1. The utility model provides a steel pipe double-end capper which characterized in that: comprises two end enclosure mechanisms (4) and two clamping components which are respectively arranged on a machine body (1) in a sliding way; the two clamping assemblies respectively clamp and fix two ends of the steel pipe, and the two end sealing mechanisms (4) respectively and simultaneously seal the two ends of the steel pipe;

the end socket mechanism (4) comprises a hollow outer main shaft (227), a shaft sleeve (24) with an eccentric hole is fixedly arranged in the outer main shaft (227), an inner main shaft (218) is rotatably connected in the eccentric hole of the shaft sleeve (24), and the inner main shaft (218) rotates around the axial lead of the outer main shaft (227) while rotating; a sealing die (2110) is fixedly arranged at one end of the inner main shaft (218); the sealing die (2110) is provided with an inwards concave arc-shaped groove, and the axial lead of the arc-shaped groove is the same as that of the inner main shaft (218); when the steel pipe is sealed, the inner wall of the arc-shaped groove of the sealing die (2110) extrudes the end part of the steel pipe;

the clamping assembly comprises a pressing mechanism (16) for pressing and fixing the steel pipe, a steel pipe positioning mechanism (19) for positioning the extending length of the end part of the steel pipe, a support positioning mechanism (18) for determining the initial position of the end sealing mechanism (4) and a locking mechanism (17) for locking and fixing the pressing mechanism (16).

2. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: a protective gas cover (229) is fixedly sleeved on the outer main shaft (227); and the sealing die (2110) is provided with a protective gas outlet (28) which penetrates through the bottom of the concave arc-shaped groove, and the protective gas outlet (28) is communicated with a protective gas inlet (2291) on the protective gas cover (229) through an internal gas channel.

3. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the pressing mechanism (16) comprises an upper pressing die (167) and a lower pressing die (168), and the upper pressing die (167) is fixed on the bracket (15); the pressing lower die (168) is fixed on the lower die seat plate (1613); the bracket (15) and the lower die base plate (1613) are respectively arranged on the machine body (1) in a sliding manner; the bracket (15) and the lower die base plate (1613) are fixedly connected through a connecting plate (169).

4. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the steel pipe positioning mechanism (19) comprises a positioning shaft (191), and the positioning shaft (191) is arranged on the pressing mechanism (16) corresponding to the extending position of the steel pipe; when the end part of the steel pipe is positioned, the side part of the positioning shaft (191) is abutted against the end part of the steel pipe; the positioning shaft (191) is vertically arranged in a sliding manner.

5. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the other end of the inner main shaft (218) is in transmission connection with a connecting shaft (216) through a cross universal coupling (217); the connecting shaft (216) is in transmission connection with the inner spindle motor (211) through a belt and a belt pulley; the outer spindle (227) is in transmission connection with an outer spindle motor (221) through a belt and a belt pulley; the outer main shaft (227) is rotatably connected in the mounting sleeve (225) through a bearing (226).

6. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the bracket positioning mechanism (18) is arranged on the side part of the bracket (15); the bracket positioning mechanism (18) comprises a positioning inserted rod (181), the positioning inserted rod (181) is transversely arranged in a rod sleeve (182) in a sliding manner, and the rod sleeve (182) transversely penetrates through the bracket (15); the end part of the positioning inserted bar (181) can be inserted and fixed or separated from the positioning seat (185); the positioning seat (185) is fixedly arranged on the main shaft bracket (20).

7. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the locking mechanism (17) comprises a locking block (171); the locking block (171) is fixedly connected to the side part of the bracket (15); the bottom of the locking block (171) is provided with a long groove; a locking bolt (174) is arranged on one side, perpendicular to the long groove, of the locking block (171); the locking bolt (174) penetrates into the long groove of the locking block (171); the locking block (171) is arranged on the fixing plate (14) in a sliding manner through the long-shaped groove; a locking plate (173) is arranged in the long groove of the locking block (171); when the locking bolt (174) is locked, the end part of the locking bolt tightly pushes the locking plate (173) and the fixing plate (14).

8. The steel tube double-end sealing machine as claimed in claim 1, characterized in that: the end sealing mechanism (4) further comprises a heating system (23), the heating system (23) is fixed on the spindle support (20), the heating system (23) comprises an induction heater (232), an induction coil (234) is arranged on the induction heater (232), and the induction coil (234) is arranged at the front end of the sealing die (2110); the induction coil (234) is of a circular ring structure.

Images