CN219188175U

CN219188175U - Single-head hydraulic uncoiler

Info

Publication number: CN219188175U
Application number: CN202223321965.XU
Authority: CN
Inventors: 王广林; 邵茂奇; 陈明; 施宏岭
Original assignee: Yangzhou Weiguang Metal Manufacturing Co ltd
Current assignee: Yangzhou Weiguang Metal Manufacturing Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-16
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a single-head hydraulic uncoiler which comprises a front machine seat, a rear machine seat, a main shaft, a mandrel, an oil cylinder and a steel coil expansion and contraction supporting mechanism, wherein the steel coil expansion and contraction supporting mechanism is arranged at the front end of the main shaft, the rear end of the main shaft is arranged in the front machine seat and the rear machine seat, a first bearing, a second bearing and a brake disc are arranged on the main shaft, the first bearing and the second bearing are respectively arranged in the front machine seat and the rear machine seat, the brake disc is arranged between the front machine seat and the rear machine seat, the oil cylinder is connected at the rear end of the rear machine seat, the mandrel is arranged in the main shaft in a penetrating way, the front end of the mandrel penetrates through the axis of the main shaft and is connected with the main shaft through a rotary linkage device, the rear end of the mandrel penetrates through the axis of a piston rod of the oil cylinder, a pair of third bearings are arranged on the mandrel, and the third bearings are arranged at the positions of two ends of the piston rod. The single-head hydraulic uncoiler has the advantages of simple structure, convenience in installation, high reliability, long service life and the like.

Description

Single-head hydraulic uncoiler

Technical Field

The utility model relates to the technical field of steel strip uncoiling equipment, in particular to a single-head hydraulic uncoiler.

Background

The uncoiler is one of essential important equipment in a welded pipe production line, and has the function of supporting a steel coil by tensioning an inner hole of the steel coil; the other is to feed the steel strip head into the leveler by rotation in cooperation with the straight-headed machine. Therefore, the quality of the performance of the uncoiler is critical to the influence of the whole production line.

The main shaft of the uncoiler has two functions, namely, one of the main shaft drives the steel coil to rotate; the other is the tension support of the steel coil. The tensioning is usually realized by pushing an inclined sliding block by an oil cylinder or an air cylinder which is installed together with the mandrel; the rotation is usually realized by a motor driving a main shaft to rotate through a speed reducer or dragging a steel coil to rotate on an uncoiler together with a feeding mechanism. Because the rear end of the mandrel is connected with the piston rod of the oil cylinder or the air cylinder, and the mandrel needs to be capable of synchronously rotating with the main shaft, a feeding mechanism in the prior art drives the steel coil to rotate and unwind the single-head uncoiler, the connection between the mandrel and the piston rod is complex, and the connection position is easy to loose after long-term use, so that the transmission effect is affected. In addition, when bearing greatly, the phenomenon of skidding often appears in the single-end decoiler use, influences customer's use experience.

Disclosure of Invention

The utility model aims to provide a single-head hydraulic uncoiler which is simple in structure, convenient to install, high in reliability and long in service life.

The purpose of the utility model is realized in the following way: the utility model provides a single-head hydraulic decoiler, including preceding frame, back frame, the main shaft, dabber, hydro-cylinder and coil of strip swell-shrink supporting mechanism, coil of strip swell-shrink supporting mechanism installs in the main shaft front end, the main shaft rear end is installed in preceding frame and back frame, be equipped with first bearing on the main shaft, second bearing and brake disc, first bearing and second bearing are installed respectively in preceding frame and back frame, the brake disc sets up in preceding frame and back frame between, the hydro-cylinder is connected in back frame rear end, wear to be equipped with the dabber in the main shaft, the dabber front end passes the spindle axle center and is connected through rotatory aggregate unit with the main shaft, the dabber rear end passes hydro-cylinder piston rod axle center, the dabber is installed a pair of third bearing, the third bearing sets up in piston rod both ends position. The single-head hydraulic uncoiler has the advantages of simple structure, convenience in installation, high reliability, long service life and the like.

As a further improvement of the utility model, the rotary linkage device comprises an end cover, a guide flat key, a common flat key and a connecting bolt, wherein the mandrel is connected with the end cover through the common flat key, the outer edge of the end cover is connected with the end surface of the steel coil expansion and contraction supporting mechanism through the connecting bolt, and the main shaft is connected with the steel coil expansion and contraction supporting mechanism through the guide flat key, so that the mandrel can drive the steel coil expansion and contraction supporting mechanism to axially move, and the mandrel and the steel coil expansion and contraction supporting mechanism can be driven to synchronously rotate in the process of rotating the main shaft.

As a further improvement of the utility model, the steel coil expanding and contracting supporting mechanism comprises a movable sleeve, a lower sliding block, an upper sliding block and a cambered plate, wherein the movable sleeve is sleeved on the main shaft and is connected with the main shaft through a guide flat key, the lower sliding block and the upper sliding block are respectively arranged on the movable sleeve and the cambered plate along the axial direction, the opposite surfaces of the lower sliding block and the upper sliding block are inclined surfaces and are movably connected through dovetail-shaped inclined grooves, the structure is simple and convenient, and the steel coil expanding and contracting supporting mechanism can be suitable for uncoiling requirements of steel coils with various inner diameters.

As a further improvement of the utility model, the main shaft is connected with the large baffle plate through a key, the rear end of the upper slide block positioned at the rearmost end is horizontally and fixedly connected with the radial slide block, and the radial slide block penetrates through the large baffle plate and is provided with the sliding devices corresponding to the two sides of the large baffle plate, so that in the process of moving the moving sleeve backwards along the axial direction, the radial slide block moves outwards along the radial direction to drive the cambered plate to move outwards so as to tighten the steel coil.

As a further improvement of the present utility model, the sliding device includes a bearing ring and a bearing pin, the bearing pin is mounted on the radial slider, the bearing ring is mounted on the bearing pin, the structure is simple, and smoothness of radial movement can be ensured.

As a further improvement of the utility model, the first bearing and the second bearing both adopt double-row tapered roller bearings, and the third bearing adopts single-row tapered roller bearings, so that radial load and axial load can be borne at the same time, and the service life of the equipment is prolonged.

As a further improvement of the utility model, annular gaps are arranged at the two ends of the piston rod, and a one-way thrust ball bearing is arranged in the annular gaps, so that the capability of bearing axial load is further improved.

As a further improvement of the utility model, the brake discs are symmetrically arranged at two sides of the main shaft, and the brake discs are horizontal butterfly brake discs, so that the phenomenon of skidding can be effectively avoided when the bearing steel coil is larger.

Drawings

Fig. 1 is a schematic diagram of the open state of a steel coil expanding and contracting support mechanism of a single-head hydraulic uncoiler.

Fig. 2 is a schematic diagram of a contraction state of a steel coil expanding and contracting support mechanism of the single-head hydraulic uncoiler.

Fig. 3 is a side view of fig. 1.

The device comprises a front machine seat 1, a rear machine seat 2, a main shaft 3, a mandrel 4, an oil cylinder 5, a first bearing 6, a second bearing 7, a brake disc fixing seat 8, a third bearing 9, a unidirectional thrust ball bearing 10, an end cover 11, a guide flat key 12, a common flat key 13, a movable sleeve 14, a lower sliding block 15, an upper sliding block 16, a cambered plate 17, a large baffle 18, a radial sliding block 19, a bearing ring 20, a first round nut 21, a second round nut 22, an oil cylinder connecting seat 23, a limiting shaft sleeve 24 and a shaft end copper sleeve 25.

Detailed Description

The single-head hydraulic uncoiler shown in figures 1-3 comprises a front machine seat 1, a rear machine seat 2, a main shaft 3, a mandrel 4, an oil cylinder 5 and a steel coil expanding and contracting supporting mechanism.

The steel coil expansion supporting mechanism is arranged at the front end of the main shaft 3. The rear end of the main shaft 3 is arranged in the front machine seat 1 and the rear machine seat 2, and the main shaft 3 is provided with a first bearing 6, a second bearing 7 and a brake disc fixing seat 8. The first bearing 6 and the second bearing 7 are respectively arranged in the front engine base 1 and the rear engine base 2, and the first bearing 6 and the second bearing 7 both adopt double-row tapered roller bearings and can bear radial load and axial load at the same time. The brake disc fixing seats 8 are arranged between the front machine seat 1 and the rear machine seat 2 and symmetrically arranged on two sides of the main shaft 3. The horizontal butterfly brake disc is arranged on the brake disc fixing seat 8, so that the slipping phenomenon can be effectively avoided when the bearing steel coil is large.

The oil cylinder 5 is connected to the rear end of the rear machine base 2. A mandrel 4 is arranged in the main shaft 3 in a penetrating way, and the front end of the mandrel 4 passes through the axis of the main shaft 3 and is connected with the main shaft 3 through a rotary linkage device. The rear end of the mandrel 4 passes through the axis of a piston rod of the oil cylinder 5, a pair of third bearings 9 are arranged on the mandrel 4, and the third bearings 9 are arranged at the two ends of the piston rod. The third bearing 9 is a single row tapered roller bearing. And, the piston rod both ends are equipped with annular breach, are equipped with one-way thrust ball bearing 10 in the annular breach.

Specifically, the rotary linkage includes an end cap 11, a guide flat key 12, a common flat key 13, and a connecting bolt. The mandrel 4 and the end cover 11 are in rotary connection through the common flat key 13, the outer edge of the end cover 11 is connected with the end face of the steel coil expansion supporting mechanism through a connecting bolt, the main shaft 3 and the steel coil expansion supporting mechanism are connected through the guide flat key 12, so that the mandrel 4 can drive the steel coil expansion supporting mechanism to axially move, and the mandrel 4 and the steel coil expansion supporting mechanism can be driven to synchronously rotate in the process of rotating the main shaft 3. In order to ensure the flexibility of axial movement and reduce friction, the inner surface of the front end of the main shaft 3 is provided with an annular gap, and a shaft end copper sleeve 25 is arranged in the annular gap.

The steel coil expanding and contracting supporting mechanism comprises a movable sleeve 14, a lower sliding block 15, an upper sliding block 16 and a cambered plate 17. The movable sleeve 14 is sleeved on the main shaft 3 and is connected with the main shaft 3 through the guide flat key 12, the lower slide block 15 and the upper slide block 16 are respectively arranged on the movable sleeve 14 and the cambered plate 17 along the axial direction, the opposite surfaces of the lower slide block 15 and the upper slide block 16 are inclined surfaces and are movably connected through the dovetail-shaped inclined grooves, and the structure is simple and convenient, and can be suitable for uncoiling requirements of steel coils with various inner diameters. The main shaft 3 is connected with a large baffle 18 through a key, the rear end of an upper slide block 16 positioned at the rearmost end is horizontally and fixedly connected with a radial slide block 19, the radial slide block 19 passes through the large baffle 18, and sliding devices are arranged at the positions corresponding to the two sides of the large baffle 18, so that in the axial backward moving process of the moving sleeve 14, the radial slide block 19 moves outwards along the radial direction to drive the bow-shaped plate 17 to move outwards to tighten the steel coil.

The sliding device comprises a bearing ring 20 and a bearing shaft pin, wherein the bearing shaft pin is arranged on the radial sliding block 19, the bearing ring 20 is arranged on the bearing shaft pin, the structure is simple, and the smoothness of radial movement can be ensured.

The main shaft 3 is equipped with first round nut 21 and first round nut brake ring corresponding to big baffle 18 front side position, and main shaft 3 rear end is equipped with second round nut 22 and second round nut brake ring, and the quantity of second round nut is two, and second round nut brake ring presss from both sides and establishes between two second round nuts, prevents the axial float of main shaft 3 in the course of the work, improves life. An oil cylinder connecting seat 23 is arranged between the oil cylinder 5 and the rear engine base 2, and the oil cylinder connecting seat 23 is detachably connected with the oil cylinder 5 and the rear engine base 2, so that the connection is simple and the disassembly and the maintenance are convenient. A limiting shaft sleeve 24 is arranged in the rear machine base 2 at the rear side corresponding to the installation position of the second bearing 7, and two ends of the limiting shaft sleeve 24 are respectively propped against the second bearing 7 and the oil cylinder connecting seat 23, so that the axial movement of the main shaft 3 is further prevented.

The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.

Claims

1. A single-head hydraulic uncoiler is characterized in that: the steel coil expanding and contracting support mechanism is mounted at the front end of the main shaft, the rear end of the main shaft is mounted in the front frame and the rear frame, a first bearing, a second bearing and a brake disc are arranged on the main shaft, the first bearing and the second bearing are mounted in the front frame and the rear frame respectively, the brake disc is arranged between the front frame and the rear frame, the oil cylinder is connected at the rear end of the rear frame, the main shaft is internally provided with the core shaft in a penetrating manner, the front end of the core shaft penetrates through the axis of the main shaft and is connected with the main shaft through a rotary linkage device, the rear end of the core shaft penetrates through the axis of a piston rod of the oil cylinder, a pair of third bearings are mounted on the core shaft, and the third bearings are arranged at two ends of the piston rod.

2. The single-head hydraulic decoiler of claim 1, wherein: the rotary linkage device comprises an end cover, a guide flat key, a common flat key and a connecting bolt, wherein the mandrel is connected with the end cover through the common flat key, the outer edge of the end cover is connected with the end surface of the steel coil expansion supporting mechanism through the connecting bolt, and the main shaft is connected with the steel coil expansion supporting mechanism through the guide flat key.

3. The single-head hydraulic decoiler of claim 2, wherein: the steel coil expanding and contracting supporting mechanism comprises a moving sleeve, a lower sliding block, an upper sliding block and a cambered plate, wherein the moving sleeve is sleeved on the main shaft and is connected with the main shaft through a guide flat key, the lower sliding block and the upper sliding block are respectively arranged on the moving sleeve and the cambered plate along the axial direction, and the opposite surfaces of the lower sliding block and the upper sliding block are inclined surfaces and are movably connected through a dovetail-shaped inclined groove.

4. A single-head hydraulic decoiler according to claim 3, characterized in that: the main shaft is connected with a large baffle plate through a key, the rear end of the upper sliding block positioned at the rearmost end is horizontally and fixedly connected with a radial sliding block, and the radial sliding block penetrates through the large baffle plate and is provided with sliding devices corresponding to the two sides of the large baffle plate.

5. The single-head hydraulic decoiler of claim 4, wherein: the sliding device comprises a bearing ring and a bearing pin, wherein the bearing pin is arranged on the radial sliding block, and the bearing ring is arranged on the bearing pin.

6. The single-head hydraulic decoiler according to any one of claims 1 to 5, characterized in that: the first bearing and the second bearing are double-row tapered roller bearings, and the third bearing is a single-row tapered roller bearing.

7. The single-head hydraulic decoiler according to any one of claims 1 to 5, characterized in that: annular gaps are formed in the two ends of the piston rod, and a one-way thrust ball bearing is arranged in the annular gaps.

8. The single-head hydraulic decoiler according to any one of claims 1 to 5, characterized in that: the brake disc is symmetrically arranged on two sides of the main shaft, and the brake disc is a horizontal butterfly brake disc.