CN212857411U - Bearing type inner and outer die combined type circle holding device - Google Patents

Abstract

The utility model discloses a bearing type inner and outer die combined type circle holding device, which has a circle shaping effect on a workpiece and provides support in the radial direction of the workpiece, and comprises a detachable outer periphery die and an inner periphery die, wherein the outer periphery die is formed by two semicircular outer dies into a whole circle, and one semicircular outer die is jointed with the other semicircular outer die at two end parts; the inner peripheral die comprises even-number-section arc-shaped inner dies, the adjacent arc-shaped inner dies are jointed with each other at two end parts to jointly form a whole circle, and the end parts of the adjacent semicircular outer dies and the end parts of the arc-shaped inner dies which are positioned at the same side are not collinear in the radial direction. The outer periphery die and the inner periphery die can be repeatedly used, the cost for remanufacturing the rounding device is reduced, and the method is particularly suitable for pressure containers with different outer diameter sizes and the like.

Description

Bearing type inner and outer die combined type circle holding device

Technical Field

The utility model belongs to the engineering field of making relates to a device for the whole circle of barrel and provide radial support, especially relates to a circle device is embraced to bearing type interior outer mould combination formula.

Background

In the field of engineering manufacturing, for example, in the field of pressure vessel manufacturing, a large number of cylindrical workpieces with circular cross sections are often required, during the assembling and welding of the workpieces, the roundness of the cylindrical workpiece and the mismatching amount of the butt weld need to be controlled, and sufficient radial support needs to be provided for the workpieces, so that the double effects of circle calibration and load bearing by using a circle holding device are often required.

The circular device that embraces that commonly uses among the prior art has some to embrace the circle frock by the non-bearing type of monocycle board preparation, and some to embrace the circle device by the bearing type of channel-section steel circle preparation, and the thickness of monocycle board is less, only can bear lighter weight, need to match the cylinder work piece that the gyro wheel frame that has the contact surface of high strength, high coefficient of friction can bear very big weight. The groove steel ring rounding device can be used in cooperation with the welding roller carrier, and the roller of the welding roller carrier is placed between the two wing plates of the groove steel ring, so that the double effects of rounding the barrel and bearing weight are achieved. The main body part of the rounding device processed by using the channel steel ring is the channel steel ring which is formed by bending and mechanically rolling channel steel, the rigidity is easy to be poor after being rolled, and the device is easy to deform after being used for manufacturing a cylinder with larger diameter and heavier inner diameter for a long time and cannot be used continuously; because the rigidity of the joint of the channel steel ring is insufficient, the radial runout of the joint is easy to occur when the channel steel ring rounding device bears a heavier cylinder; and the steel ring rounding device can only be suitable for manufacturing the cylinder with single outer diameter after being processed and manufactured, and is difficult to recycle, namely, when the outer diameter of a workpiece is changed, the whole rounding device needs to be prepared again, so that the cost waste of labor and materials is caused.

In view of the above, a problem to be solved by the related technical personnel in the industry is how to design a new load-bearing inner and outer mold combined type circle holding device to eliminate the above defects and shortcomings in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem that the bearing of a circle embracing device and a traditional steel ring circle embracing device is poor due to frequent replacement in the prior art, the utility model provides a bearing type inner and outer die combined circle embracing device, which has a whole circle effect on a workpiece and provides support in the radial direction of the workpiece, and the circle embracing device comprises a detachable outer periphery die and an inner periphery die, wherein the outer periphery die is formed by two semicircular outer dies into a whole circle, and one semicircular outer die is jointed with the other semicircular outer die at two end parts;

the inner peripheral die comprises even-numbered segments of arc-shaped inner dies, the adjacent arc-shaped inner dies are jointed with each other at two end parts to jointly form a whole circle,

the end parts of the adjacent semicircular outer molds and the end parts of the arc-shaped inner molds which are positioned on the same side are not collinear in the radial direction.

Further, a joint of the two semicircular outer dies and the joint of the nearest circular arc-shaped inner die are mutually staggered by an angle of 5-15 degrees in the radial direction.

Furthermore, the end parts of the semicircular outer molds are respectively provided with a first hoop ear, and a first bolt is arranged between the corresponding first hoop ears positioned on the same side to connect the two semicircular outer molds. The first hoop ear may be integrally formed with the inner wall of the semicircular outer mold by welding, or may be connected by other means known to those skilled in the art.

Furthermore, a connecting block is arranged on the inner wall of the semicircular outer die and connected with the inner wall of the circular arc-shaped inner die.

Further, the first hoop lug and the connecting block are integrally formed with the semicircular outer die.

Further, the circular arc inner die is installed on the connecting block through a second bolt.

Furthermore, the end parts of the arc-shaped inner molds are respectively provided with a second hoop ear, and a bolt is arranged between the corresponding second hoop ears positioned at the same side to connect the two arc-shaped inner molds.

Further, the outer peripheral mold and the inner peripheral mold are arranged to have the same circle center, and the acute angle range formed by connecting lines formed between the end of the semicircular outer mold and the end of the arc-shaped inner mold which are located on the same side and the circle center is 5-10 degrees.

Further, the circle embracing device further comprises a liner fixedly installed on the inner wall of the inner peripheral mold.

Furthermore, the semicircular outer die is formed by welding a rigid semicircular ring plate and a semicircular bottom plate. The arrangement of the semicircular ring plate and the semicircular bottom plate can be selected by a person skilled in the art according to requirements, and the cross section of the welded semicircular ring plate and the semicircular bottom plate can be in an H shape, an n shape or a flat-bottom U shape.

Further, the rigid semicircular ring plate and the semicircular bottom plate are made of Q345R steel.

Furthermore, a curved lining plate is welded on the surface of the semicircular bottom plate. The curved lining plate is made of S30408 stainless steel.

The rounding device is of a detachable inner-outer die combined structure, is fastened to the wall of a workpiece, and can be used for manufacturing an outer-circumference die and an inner-circumference die by rolling channel steel/I-steel into a cylindrical shape and welding and joining two ends of the roll to each other.

Illustratively, the peripheral mold may include two semicircular outer molds (e.g., two semicircular steel ring plates), and further, may be formed by welding two semicircular ring plates and a semicircular bottom plate. Thus, even if the drum is applied to a large-weight drum with a large diameter for a long time, the drum does not deform.

Illustratively, the first hoop ear is welded to the end of the semicircular outer die of the outer peripheral die. The inner peripheral mold may include even number (e.g., 2, 4, 6, 8, etc.) of circular arc inner molds.

The outer periphery mould and the inner periphery mould are detachable, and the radius size of the inner periphery mould from the circle center can be changed, so that the requirements of the diameter sizes of different workpieces are met. Specifically, the liner can be arranged on the inner side of the inner peripheral die and directly pressed on the surface of the clamped workpiece, and the movement of the liner is limited under the common limitation of the inner peripheral die and the clamped workpiece, so that the liner is more stable. The gasket is connected with the inner wall of the inner circumference mould through a bolt. The size of the workpiece which can be held tightly by the inner peripheral die is adjusted by fixing the outer peripheral die (namely, repeatedly utilizing the outer peripheral die) and changing the size of the radius of the inner peripheral die from the circle center. After the outer diameter of the workpiece is determined, the size of the inner peripheral die can be adjusted correspondingly to be the most suitable size, for example, the inner peripheral die can be cut to hold a workpiece with a larger diameter; a plurality of gaskets (such as tetrafluoroethylene gaskets) can be uniformly fixed between the inner peripheral die and the workpiece, the gaskets are connected on the inner wall of the inner die in a bolt connection mode, the connection is tight, and the disassembly and the assembly are easy, so that the outer peripheral die, the inner peripheral die and the gaskets act together to further clamp the workpiece with smaller diameter.

The diameters of the outer and inner peripheral molds may be substantially equal (i.e., the outer wall of the inner peripheral mold and the inner wall of the outer peripheral mold fit closely together).

Between outer circumference mould and interior circumference mould, can connect through a plurality of connecting blocks (for example 2-16) of equipartition in the circumference of the ring shape outer wall of interior circumference mould, the connecting block is too much, is difficult to manufacturing, and the connecting block is too few, can't guarantee the firm connection between outer circumference mould and the interior circumference mould, and the appropriate figure can be selected as required to the skilled person in the art.

For example, the end of the semicircular outer mold and the end of the arc-shaped inner mold are respectively provided with a first hoop lug and a second hoop lug, both sides of which protrude outwards, and a fastening bolt is arranged between the corresponding hoop lugs on the same side, so that the two semicircular outer molds and the plurality of segments of the arc-shaped inner molds are connected into a whole. The nut and the screw of the fastening bolt can adopt standard parts, are easy to replace and reduce the cost.

The rigid ring plate and the semicircular bottom plate can be welded into a semicircular outer die by welding methods such as flash butt welding and arc welding after being cut from the Q345R steel according to a preset size length.

The first ear and the connecting block may be integrally formed with the semicircular outer mold, or may be connected in other ways known to those skilled in the art, so long as the same technical effect is achieved.

Compared with the prior art, the utility model provides a technical scheme has following advantage:

1. the outer periphery die and the inner periphery die can be repeatedly utilized, the cost for remanufacturing the circle holding device is reduced, and the circular arc welding device is particularly suitable for pressure containers with different outer diameter sizes and the like;

2. the connecting positions of the end parts of the adjacent outer periphery mould and the inner periphery mould are staggered by a certain angle, so that the radial run-out of the end part connecting part is eliminated, and the inward concave deformation and the outward convex deformation of one end of the end part connecting part are avoided; consequently compare with traditional embracing circle device, the scheme of this patent except the effect of "the cylinder is whole circle", more can play the effect that "weight bore", also is applicable to more bearing the weight stainless steel cylinder frock heavier.

3. The periphery mould can be formed by welding a semicircular ring plate and a semicircular bottom plate, so that the rigidity is greatly enhanced, the periphery mould is not deformed after being used for manufacturing a heavier cylinder for a long time, and the periphery mould is obviously superior to a rounding device manufactured by a bending mechanical rolling channel steel ring.

Drawings

The advantages and spirit of the present invention can be further understood by the following detailed description and the accompanying drawings.

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

FIG. 2 is a schematic view taken along line A in FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is a partial sectional view of the outer peripheral mold of embodiment 1 of the present invention;

fig. 5 is a schematic view of embodiment 2 of the present invention.

FIG. 6 is a schematic view of the direction A in FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

fig. 8 is a partial sectional view of the outer peripheral mold according to embodiment 2 of the present invention.

In the figure, 1-a semicircular outer die, 2-a circular arc inner die, 3-a first bolt, 4-a second bolt, 5-a first hoop lug, 6-a connecting block, 7-a semicircular ring plate and 8-a semicircular bottom plate

Detailed Description

The following detailed description of the embodiments of the present invention refers to the accompanying drawings. However, the present invention should be understood not to be limited to such an embodiment described below, and the technical idea of the present invention may be implemented in combination with other known techniques or other techniques having the same functions as those of the known techniques.

The terms "comprising" and "comprises", as used in the claims, should not be construed as being limited to the particular forms set forth herein, but are intended to exclude other elements or steps. They are to be understood as specifying the presence of the stated features, integers, steps and/or components as stated but not to preclude the presence and/or addition of one or more other features, integers, steps or components or groups thereof. Thus, the scope of the expression "a device comprising x and z" should not be limited to devices consisting of only the components x and z. In addition, the scope of the expression "method comprising steps x and z" should not be limited to methods consisting of only these steps.

In the following description of the embodiments, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms are used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "axial", "radial", etc. should be construed as words of convenience and should not be construed as limiting terms.

In the following description of the specific embodiments, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "engaged," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected in abutment with one another, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless clearly indicated to the contrary, each aspect or embodiment defined herein may be combined with any other aspect or embodiments. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature indicated as being preferred or advantageous.

As used herein, the term "axial" refers to a direction generally parallel to the axis of rotation, axis of symmetry, or centerline of a component or components, and herein may be a direction parallel to the axis of rotation of a work piece being gripped. For example, in a cylinder having a centerline and opposing rounded ends, the "axial" direction may refer to a direction extending parallel to the centerline between the opposing ends. In some cases, the term "axial" may be used with respect to components that are not cylindrical (or otherwise radially symmetric). For example, an "axial" direction for a rectangular housing containing a rotating shaft may be considered to be a direction generally parallel to the axis of rotation of the shaft. Further, the term "radial" as used herein may refer to the direction or relationship of a component relative to a line extending perpendicularly outward from a shared centerline, axis, or similar reference. For example, two concentric and axially overlapping cylindrical components may be considered to be "radially" aligned over axially overlapping portions of the components, but not "radially" aligned over non-axially overlapping ones of the components. In some cases, these components may be considered "radially" aligned even though one or both of the components may not be cylindrical (or otherwise radially symmetric). Furthermore, the terms "axial" and "radial" (and any derivatives thereof) may encompass directional relationships (e.g., tilt) other than exact alignment with the true axial and radial dimensions, provided that the relationship predominates in the respective nominal axial or radial direction.

As used herein, the term "same side" refers to the same side that is located on the axis of the workpiece being clasped.

Specific embodiments of the present invention will be described in detail below with reference to fig. 1 to 8.

[ example 1 ]

Fig. 1 and 2 are schematic views of an exemplary rounding device. The pair of semicircular outer molds 1 form an outer peripheral mold, and the pair of circular arc inner molds 2 form an inner peripheral mold. First hoop lugs 5 are welded at the end parts of the semicircular outer dies 1 forming the peripheral die, and first bolts 3 are arranged between the corresponding first hoop lugs 5 positioned at the same side to connect the end parts of the two semicircular outer dies 1. The arc-shaped inner die 2 is arranged on the connecting block 6 by adopting a second bolt 4. The inner diameter of the semicircular outer die 1 may be substantially equal to the outer diameter of the circular arc-shaped inner die 2 with the same thickness.

As shown in fig. 1, the ends of the adjacent semicircular outer mold and the circular arc inner mold on the same side are not collinear in the radial direction, that is, the straight line formed by the following two connecting places is at a certain angle: the straight line formed by the end parts of the two semicircular outer dies 1 and the straight line formed by the joint of the end parts of the two circular arc inner dies 2 are staggered with a certain angle alpha to eliminate radial run-out of the joint of the end parts. The joints of the two ends of the arc-shaped inner die can be jointed in a mode of forming a connecting hole without arranging a physical connecting piece. As an example, this angle α may be around 10 °. Of course, the joints at the two ends of the arc-shaped inner die may also be connected by second bolts (not shown), and those skilled in the art may select an appropriate connection mode as needed.

As shown in fig. 3 and 4, the connection between the inner peripheral mold and the outer peripheral mold may be implemented by a method commonly used in the art, for example, the connecting blocks 6 are uniformly and fixedly arranged on the circumference of the inner edge of the semicircular outer mold 1, and the arc-shaped inner mold 2 is connected with the semicircular outer mold 1 through the connecting blocks 6. Preferably, the number of the connecting blocks 6 on each semicircular outer die 1 can be 2, 4, 6 or 8.

When the size of the workpiece is changed, the diameter size of the inner periphery die is only required to be adjusted, and the outer periphery die is not required to be replaced, so that a good circle holding effect can be achieved. For example, the inner peripheral die may be cut so as to increase the diameter of the inner peripheral die; it is also possible to increase the thickness of the joint block or to add a spacer between the inner peripheral mold and the outer peripheral mold, thereby reducing the diameter of the inner peripheral mold.

As shown in fig. 4, in order to reinforce the outer peripheral mold, the semicircular outer molds constituting the outer peripheral mold may be welded by a semicircular ring plate 7 and a semicircular bottom plate 8. The structure adopting the two rigid ring plates enhances the rigidity and overcomes the defect of poor rigidity of the existing rounding device made of channel steel. Wherein, the semicircular ring plate 7 and the semicircular bottom plate 8 can be welded into a semicircular steel ring with an H-shaped section, and the end part of the semicircular ring plate 7 can be connected by a bolt.

Furthermore, a curved liner plate made of S304 material can be fixed on the semicircular curved bottom plate, and the holding tool is more suitable for manufacturing austenitic stainless steel pressure vessels.

[ example 2 ]

As shown in fig. 5, 6, 7 and 8, in the rounding device, two semicircular outer dies 1 are connected at first hoop ears 5 by using first bolts 3, so as to form a complete circular outer circumferential die.

Four 1/4 circular-arc inner dies are enclosed to form an inner circumferential die, and eight connecting blocks 6 are welded on the inner surface of the outer circumferential die, so that the circular-arc inner dies 2 are fixed on the semicircular outer dies 1. As shown in fig. 8, the main body of the semicircular outer mold 1 is formed by welding two semicircular ring plates 7 and a semicircular bottom plate 8 (the section of the semicircular ring plate is pi-shaped).

The outer diameter of the arc-shaped inner die 2 and the inner diameter of the semicircular outer die 1 may be substantially equal. The arc-shaped inner die 2 is arranged on the connecting block 6 by adopting a second bolt 4. As shown in fig. 5, the joint of the semicircular outer die 1 and the joint of the nearest arc-shaped inner die 2 are offset by a circumferential angle of about 5 ° when they are mounted.

The terms "first" and "second" as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, unless otherwise specified. Similarly, the appearances of the phrases "a" or "an" in various places herein are not necessarily all referring to the same quantity, but rather to the same quantity, and are intended to cover all technical features not previously described. Similarly, modifiers similar to "about", "approximately" or "approximately" that occur before a numerical term herein typically include the same number, and their specific meaning should be read in conjunction with the context. Similarly, unless a specific number of a claim recitation is intended to cover both the singular and the plural, and embodiments may include a single feature or a plurality of features.

The preferred embodiments of the present invention are described in the specification, and the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit the present invention. All technical solutions that can be obtained by logical analysis, reasoning or limited experiments according to the concept of the present invention by those skilled in the art are within the scope of the present invention.

Claims (10)

1. A bearing-type inner and outer mold combined circle embracing device which has a circle embracing function on a workpiece and provides support in a radial direction of the workpiece, characterized in that the circle embracing device comprises a detachable outer circumference mold and an inner circumference mold, wherein the outer circumference mold is formed by two semicircular outer molds into a whole circle, and one semicircular outer mold is joined with the other semicircular outer mold at both end parts;

the inner peripheral die comprises even-numbered segments of arc-shaped inner dies, the adjacent arc-shaped inner dies are jointed with each other at two end parts to jointly form a whole circle,

the end parts of the adjacent semicircular outer molds and the end parts of the arc-shaped inner molds which are positioned on the same side are not collinear in the radial direction.

2. The embracing circle device according to claim 1, wherein a junction of the two semicircular outer molds and a junction of the nearest circular arc inner mold are radially offset from each other by an angle of 5 ° to 15 °.

3. The rounding device as claimed in claim 1, wherein the ends of said semicircular outer molds are each provided with a first hoop ear, and a first bolt is provided between the corresponding first hoop ears on the same side to connect the two semicircular outer molds.

4. The rounding device as claimed in claim 1, wherein the inner wall of said semicircular outer mold is provided with a connecting block connected with the inner wall of the circular arc inner mold.

5. A looping device according to claim 3 or 4, wherein the first hoop lug and the connecting block are integrally formed with a semicircular outer die.

6. The rounding device as claimed in claim 1, wherein said circular arc inner mold is mounted on the connecting block by a second bolt.

7. The embracing circle device according to claim 1, wherein the outer circumferential mold and the inner circumferential mold are arranged to have the same center, and an acute angle formed by a connecting line formed between the end of the semicircular outer mold and the end of the arc-shaped inner mold located at the same side and the center of the circle is in a range of 5 ° to 10 °.

8. The embracing device of claim 1, further comprising a gasket fixedly mounted on an inner wall of the inner circumferential mold.

9. The embracing circle device of claim 1, wherein the semicircular outer mold is formed by welding a rigid semicircular ring plate and a semicircular bottom plate.

10. The looping device of claim 9, wherein a curved liner plate is welded to the surface of the semicircular bottom plate.

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