CN210115337U

CN210115337U - Coiler mandrel short jaw structure

Info

Publication number: CN210115337U
Application number: CN201920370859.XU
Authority: CN
Inventors: 袁歌; 董春光; 金峰; 余军; 田峰; 董为贵
Original assignee: Changzhou Baoling Heavy and Industrial Machinery Co Ltd
Current assignee: Changzhou Baoling Heavy and Industrial Machinery Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-02-28
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to the field of machining, concretely relates to short jaw structure of coiler mandrel, including reel axle, sector plate, jaw strip, upper wedge and lower wedge, be equipped with a pull rod that can draw the reel axle along its axial direction on the reel axle, the jaw strip through fastener detachably with sector plate is connected, the bottom surface that lower wedge and reel axle axial direction are mutually perpendicular offsets with the reel axle, the bottom surface that should offset is an inclined plane; the lower inclined wedge is matched with an upper inclined wedge which can be sleeved at the top of the lower inclined wedge, the upper plane of the upper inclined wedge is a clamping plate surface, and a protruding stop block is arranged on one inward side of the clamping plate surface along the insertion direction of the steel strip. The utility model discloses effectively avoided the automatic phenomenon of loosing core when unloading a roll, eliminated steel band indentation phenomenon, improved the steel band yields.

Description

Coiler mandrel short jaw structure

Technical Field

The utility model relates to the field of machining, concretely relates to short jaw structure of coiler mandrel.

Background

In recent years, with the improvement of production efficiency and product quality requirements of steel mill users, automatic production gradually becomes the mainstream trend of modern production modes, and the automatic coil discharging function of a coiling machine is a key step.

However, when the existing recoiling machine unloads the coil automatically, the core-pulling phenomenon frequently occurs, the rhythm of automatic production is interrupted, manual intervention is needed for reinstallation, time and labor are wasted, and the production efficiency of modern production is affected.

Secondly, the coiling machine often can take place the bulge phenomenon because the steel sheet is crooked at reel jaw department, leads to several rings of steel sheets in the coil of strip inboard to produce the indentation, influences the steel sheet quality.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a difficult core pulling phenomenon that produces just can not produce the short jaw structure of coiler mandrel because of the swell.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: a short jaw structure of a coiler mandrel comprises a mandrel shaft, a sector plate, a jaw strip, an upper wedge and a lower wedge, wherein a pull rod capable of drawing the mandrel shaft along the axial direction of the mandrel shaft is arranged on the mandrel shaft, the jaw strip is detachably connected with the sector plate through a fastener, the bottom surface of the lower wedge, which is vertical to the axial direction of the mandrel shaft, abuts against the mandrel shaft, and the bottom surface of the abutment is an inclined surface; the lower inclined wedge is matched with an upper inclined wedge which can be sleeved at the top of the lower inclined wedge, one surface of the upper inclined wedge, which is opposite to the jaw strip, is a clamping plate surface, and a protruding stop block is arranged on one inward side of the clamping plate surface along the insertion direction of the steel strip.

Through analysis, the traditional jaw structure shows that the strip head of the steel strip is easy to bend and clamp between the sector plate and the winding shaft because the strip head is inserted too long (refer to a point p in a figure 2 of an attached drawing of the specification), so that the core pulling phenomenon is easy to generate during coil unloading.

In the short jaw structure of the coiler mandrel, the clamp plate surface is provided with the protruding stop dog on one side inwards along the insertion direction of the steel strip, the protruding stop dog can effectively prevent the head of the steel strip from being inserted between the sector plate and the mandrel shaft, the problem of excessive bending and clamping of the head of the steel strip is solved, and the core pulling phenomenon during automatic coil stripping is effectively avoided.

In addition, because the plate is sleeved on the lower wedge through the novel upper wedge and is not connected through the fastener, the clamping plate surface of the upper wedge is smooth, and the phenomenon that a steel belt head is clamped and cannot enter a jaw due to the fact that the fastener protrudes outside (refer to a point q in an attached figure 2 of the specification) is avoided.

Further, the end point of the outward end of the splint surface in the steel strip insertion direction is a steel strip bending point which is positioned at the inner side of the outer vertex of the jaw strip (refer to the k point in the figure 6 of the attached drawings of the specification).

The bending point of the traditional steel strip is positioned outside the external vertex of the jaw strip, so the generated bulge is also generated outside the external vertex of the jaw strip (refer to the g point in figure 5 of the attached drawing of the specification), and when the coiler curls the next circle of steel strip, the convex bulge can push against the next circle of steel strip, thereby generating an indentation.

The utility model discloses in, the steel band bending point is in the inboard on the outside summit of the vice jaw strip, and the swell that produces so can be sheltered from by the strip of keeping silent, just so can not influence round steel band down again, can not produce the indentation again yet.

As a further improvement of the utility model, the inclined plane that the lower wedge is clamped and is offset with the drum shaft is coated with an oil film. Because the contact surfaces of the lower wedge and the drum shaft are metal surfaces, the metals are not easy to slide and easy to damage in direct contact, and the metal surfaces can be protected from rusting by coating an oil film, and the contact surfaces can slide smoothly.

As a further improvement of the utility model, the opposite surface of the wedge on the jaw strip is designed in a saw-toothed shape. The toothed design is favorable for clamping the inserted steel belt head.

Therefore, compared with the prior art, the coiler mandrel short jaw structure mainly has the following advantages:

1) the utility model discloses the length that the steel band tape head that has significantly reduced inserted keeping silent has eliminated the dead problem of unnecessary tape head bending card, the phenomenon of loosing core when effectively having avoided automatic coil stripping.

2) The utility model discloses the steel band bending point of new design is close to the inboard of keeping silent more than former design for the crooked swell of steel band diminishes the influence of coil of strip, eliminates steel band indentation phenomenon, improves the steel band yields.

3) The utility model discloses eliminate the arch between former design jaw strip and the last slide wedge for the steel band can get into smoothly keeping silent.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

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

FIG. 2 is a schematic view of a conventional jaw configuration;

FIG. 3 is a schematic view of the interaction between the spool shaft and the lower cam;

FIG. 4 is a schematic view of a roll structure;

FIG. 5 is a schematic diagram of the position of the bulge in the original design;

fig. 6 is a schematic diagram of the position of the bulge in the middle bulge of the present invention.

Wherein: 1. the steel belt bending device comprises a winding drum shaft, 2 fan-shaped plates, 3 jaw strips, 4 upper wedges, 41 clamp plate surfaces, 5 lower wedges, 6 protruding stop blocks, 7 oil films, 8 pull rods, a steel belt bending point, n winding drum movement direction, M lower wedge movement direction, N winding drum shaft movement direction, p steel belt blocking position, q abrupt protrusions in original design, g bulging protrusion position in original design and k bulging protrusion position in the design.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the embodiments of the invention defined by the claims. It includes various specific details to assist understanding, but they are to be construed as merely illustrative. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Also, in order to make the description clearer and simpler, a detailed description of functions and configurations well known in the art will be omitted. As used in the description, the terms "front," "back," "left," "right," "up," and "down" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The invention will be further described with reference to the following several drawings: a coiler mandrel short jaw structure comprises a mandrel shaft 1, a sector plate 2, a jaw strip 3, an upper wedge 4 and a lower wedge 5, wherein a pull rod 8 capable of drawing the mandrel shaft 1 along the axial direction of the mandrel shaft is arranged on the mandrel shaft 1, the jaw strip 3 is detachably connected with the sector plate 2 through a fastener, the bottom surface of the lower wedge 5, which is perpendicular to the axial direction of the mandrel shaft 1, abuts against the mandrel shaft 1, and the abutted bottom surface is an inclined surface; the lower inclined wedge 5 is matched with an upper inclined wedge 4 which can be sleeved at the top of the lower inclined wedge, one surface of the upper inclined wedge 4 opposite to the jaw strip is a clamping plate surface 41, and a protruding stop block 6 is arranged on one side of the clamping plate surface 41, which faces inwards in the steel strip inserting direction. The end point of the outward end of the splint surface 41 in the steel strip insertion direction is a steel strip bending point a, and the steel strip bending point a is positioned on the inner side of the outer vertex of the jaw strip 3. And an oil film 7 is coated on the inclined plane of the lower inclined wedge 5 which is abutted against the winding drum shaft 1. The face of the jaw strip 3 opposite to the upper inclined wedge 4 is in a sawtooth-shaped design.

The utility model discloses a work engineering and theory of operation: the head of the steel belt is inserted into the jaw and is propped against the convex stop block 6. Pulling the pull rod 8 moves the spool shaft 1 in its axial direction, and since the abutting surface between the spool shaft 1 and the lower wedge 5 is a slope, the lower wedge 5 moves in a direction perpendicular to the bottom surface of the lower wedge 5 at this time (refer to fig. 3). The upper inclined wedge 4 is sleeved at the top end of the lower inclined wedge 5, so that the upper inclined wedge 4 can move upwards under the driving of the lower inclined wedge 5 to clamp a steel belt. At this time, the spool shaft 1 starts rotating to curl the steel strip. When the coil is unloaded, only the pull rod 8 needs to be put back to the reel shaft 1 along the reverse direction, so that the lower wedge 5 falls back, the upper wedge 4 is brought back, the upper wedge 4 is loosened from the jaw strip 3, and the steel coil can be taken out.

Adopt this coiler mandrel short jaw structure to compare in prior art and mainly have following advantage:

Claims

1. The short jaw structure of the coiler mandrel is characterized by comprising a mandrel shaft (1), a sector plate (2), a jaw strip (3), an upper wedge (4) and a lower wedge (5), wherein a pull rod (8) capable of pulling the mandrel shaft (1) along the axial direction of the mandrel shaft is arranged on the mandrel shaft (1), the jaw strip (3) is detachably connected with the sector plate (2) through a fastener, the bottom surface of the lower wedge (5) perpendicular to the axial direction of the mandrel shaft (1) is abutted against the mandrel shaft (1), and the bottom surface of the abutment is an inclined surface; lower slide wedge (5) are matchd and have one can establish last slide wedge (4) at its top at the cover, it is splint face (41) with the one side that the strip is relative of keeping silent to go up slide wedge (4), it is equipped with a protruding dog (6) on the inboard one side of steel band direction of insertion to press from both sides face (41).

2. The coiler drum short jaw structure according to claim 1, characterized in that: the end point of one end, outwards, of the clamping plate surface (41) along the steel strip insertion direction is a steel strip bending point (a), and the steel strip bending point (a) is located on the inner side of the outer top point of the jaw strip (3).

3. The coiler drum short jaw structure according to claim 1, characterized in that: and an oil film (7) is coated on the inclined plane of the lower inclined wedge (5) which is abutted against the winding drum shaft (1).

4. The coiler drum short jaw structure according to claim 1, characterized in that: the opposite surface of the jaw strip (3) and the upper wedge (4) is in a sawtooth-shaped design.