CN219025481U

CN219025481U - Movable arc straightening machine

Info

Publication number: CN219025481U
Application number: CN202222550864.3U
Authority: CN
Inventors: 肖云韬; 肖云光; 刘乐
Original assignee: Hebei Yutong Pipeline Manufacturing Co ltd
Current assignee: Hebei Yutong Pipeline Manufacturing Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-16
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to the technical field of elbow shaping equipment, in particular to a movable arc straightening machine; the arc shaping of the elbow can be completed in a single time, and the arc shaping precision and shaping efficiency of the elbow are improved; the die comprises a frame, a die holder fixedly arranged on the frame and an inner supporting arc straightening mechanism, wherein an annular placing die groove is formed in the die holder, the inner supporting arc straightening mechanism comprises a half-ring frame and a die ball fixedly arranged on the half-ring frame, the half-ring frame is rotatably arranged at the center of the annular placing die groove on the die holder, and a driving mechanism for providing power for the rotation of the half-ring frame is arranged on the frame; and a limiting assembly for limiting the elbow to move is arranged in the annular placing die groove.

Description

Movable arc straightening machine

Technical Field

The utility model relates to the technical field of elbow shaping equipment, in particular to a movable arc straightening machine.

Background

It is known that after butt welding, the welded elbow is easy to deform and needs shaping treatment; the movable arc straightening machine is a device for shaping and adjusting the welded elbow, and is widely used in the field of elbow shaping equipment; the utility model discloses a (bulletin) CN206936060U discloses a movable welding elbow arc straightening machine, which comprises a frame, a hydraulic cylinder and a shaping plate, wherein the frame comprises a first force arm, a second force arm and a third force arm, the hydraulic cylinder is fixedly arranged on the outer side surface of the first force arm, a piston rod of the hydraulic cylinder passes through the first force arm through a through hole formed on the first force arm, the end part of the piston rod of the hydraulic cylinder passing through the first force arm is positioned between the first force arm and the third force arm, the shaping plate comprises a convex meniscus and a concave meniscus, the end part of the piston rod of the hydraulic cylinder behind the first force arm is fixedly connected with the convex meniscus, a bayonet is formed on the third force arm, the concave meniscus is clamped in the bayonet and is oppositely arranged with the convex meniscus, a shaping area is formed between the convex meniscus and the concave meniscus, the piston rod is driven by the hydraulic cylinder to reciprocate to enable the convex meniscus to move towards the direction close to the concave meniscus or move towards the direction far away from the concave meniscus, the size is small, the mobility in the use process is high, and the moving operation is convenient; in use, the arc shaping is carried out on the elbow in a way of carrying out external compression molding on the elbow, the elbow is difficult to be shaped thoroughly at one time, the arc shaping precision of the elbow needs to be further improved, and the shaping efficiency needs to be further improved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the movable arc straightening machine which can finish arc straightening of the elbow at a time and improve the arc straightening precision and the straightening efficiency of the elbow.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the die comprises a frame, a die holder fixedly arranged on the frame and an inner supporting arc straightening mechanism, wherein an annular placing die groove is formed in the die holder, the inner supporting arc straightening mechanism comprises a half-ring frame and a die ball fixedly arranged on the half-ring frame, the half-ring frame is rotatably arranged at the center of the annular placing die groove on the die holder, and a driving mechanism for providing power for the rotation of the half-ring frame is arranged on the frame; a limiting component for limiting the elbow to move is arranged in the annular placing die groove; further, the curvature of the semi-ring frame is the same as that of the annular die placing groove, and the die balls can rotate along the annular die placing groove in an annular mode; further, the outer diameter of the die ball is equidistant from the inner diameter of the elbow to be formed.

Preferably, the driving mechanism comprises a first driving cylinder, a fluted disc and a rack, wherein the fluted disc is fixedly arranged at the central shaft of the semi-ring frame, the first driving cylinder is fixedly arranged on the frame, the fluted disc is fixedly arranged at the output end of the first driving cylinder, and the fluted disc is meshed with the rack; furthermore, the driving mechanism can also adopt a driving motor, the driving motor is fixedly arranged at the bottom of the die holder, and the output end of the driving motor is in transmission connection with the central shaft of the semi-ring frame.

Preferably, the limiting assembly comprises a first arc limiting retainer ring and a second arc limiting retainer ring which are arranged in the annular die placing groove; further, the first arc-shaped limiting check ring and the second arc-shaped limiting check ring are respectively in close contact with the ports at the two ends of the elbow to be shaped, and the heights of the first arc-shaped limiting check ring and the second arc-shaped limiting check ring are smaller than the wall thickness of the elbow to be shaped.

Preferably, the arc pressing and covering device further comprises an arc pressing and covering mechanism, wherein the arc pressing and covering mechanism comprises a second driving cylinder arranged on the frame and a pressing and covering die arranged at the output end of the second driving cylinder, and an arc-shaped die groove matched with the semicircular placing die groove is arranged on the pressing and covering die.

Preferably, both sides of the arc-shaped die groove on the covering die are provided with arc-shaped limiting protrusions; further, the height of the arc-shaped limiting protrusion is smaller than the wall thickness of the elbow to be shaped.

Preferably, the device further comprises a third driving cylinder, wherein the second arc-shaped limiting retainer ring can be installed on the die holder in a vertical sliding mode, the third driving cylinder is fixedly installed at the bottom of the frame, and the second arc-shaped limiting retainer ring is installed at the output end of the third driving cylinder.

(III) beneficial effects

Compared with the prior art, the utility model provides a movable arc straightening machine, which has the following beneficial effects: this movable arc straightening machine places the elbow between spacing subassembly in the annular die groove of placing, and first actuating mechanism drives the semi-ring frame and rotates, and semi-ring frame top movable mould ball gets into in the elbow, and the mould ball carries out the whole arc processing of internal stay to the elbow, and the arc plastic of elbow can be accomplished to the single time, under the effect of mould ball and annular die groove of placing, the radian and the annular die groove of placing of elbow agree with completely, improves the whole arc precision of elbow and plastic efficiency.

Drawings

FIG. 1 is a schematic view of an isometric view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic rear view of the present utility model;

FIG. 4 is a schematic view of the cross-sectional structure of FIG. 3 at A-A in accordance with the present utility model;

the reference numerals in the drawings: 1. a frame; 2. a die holder; 3. a die groove is annularly arranged; 4. a semi-ring frame; 5. a mould ball; 6. a first drive cylinder; 7. fluted disc; 8. a rack; 9. the first arc limiting check ring; 10. the second arc limiting retainer ring; 11. a second driving cylinder; 12. covering a die; 13. arc limiting bulges; 14. and a third driving cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the movable arc straightening machine of the utility model comprises a frame 1, a die holder 2 fixedly installed on the frame 1, and an inner support arc straightening mechanism, wherein an annular placing die groove 3 is arranged on the die holder 2, the inner support arc straightening mechanism comprises a semi-annular frame 4 and a die ball 5 fixedly installed on the semi-annular frame 4, the semi-annular frame 4 is rotatably installed at the center of the annular placing die groove 3 on the die holder 2, and a driving mechanism for providing power for the rotation of the semi-annular frame 4 is installed on the frame 1; a limiting component for limiting the elbow to move is arranged in the annular die placing groove 3; further, the curvature of the semi-ring frame 4 is the same as that of the annular die placing groove 3, and the die ball 5 can rotate along the annular die placing groove 3 in an annular mode; further, the outer diameter of the die ball 5 is equidistant from the inner diameter of the elbow to be subjected to the whole arc; the die ball 5 rotates along the annular placing die groove 3 in the arc straightening process of the elbow, and the shape of the elbow is completely matched with the annular placing die groove 3 under the internal bracing effect of the die ball 5 so as to fulfill the arc straightening processing purpose of the elbow.

Specifically, the driving mechanism comprises a first driving cylinder 6, a fluted disc 7 and a rack 8, wherein the fluted disc 7 is fixedly arranged at the central shaft of the semi-ring frame 4, the first driving cylinder 6 is fixedly arranged on the frame 1, the fluted disc 7 is fixedly arranged at the output end of the first driving cylinder 6, and the fluted disc 7 is meshed with the rack 8; furthermore, the driving mechanism can also adopt a driving motor, the driving motor is fixedly arranged at the bottom of the die holder 2, and the output end of the driving motor is in transmission connection with the central shaft of the semi-ring frame 4; when the output end of the first driving cylinder 6 stretches, the rack 8 drives the fluted disc 7 to rotate, so that the semi-ring frame 4 drives the die ball 5 to rotate, and the die ball 5 is pushed along the annular die placing groove 3; the transmission mode can provide larger torsion force, which is beneficial for the mould ball 5 to enter the elbow; the semi-ring frame 4 can also be driven by a driving motor.

Specifically, the limiting assembly comprises a first arc limiting retainer ring 9 and a second arc limiting retainer ring 10 which are arranged in the annular placing die groove 3; further, the first arc-shaped limiting check ring 9 and the second arc-shaped limiting check ring 10 are respectively in close contact with the two end ports of the elbow to be shaped, and the heights of the first arc-shaped limiting check ring 9 and the second arc-shaped limiting check ring 10 are smaller than the wall thickness of the elbow to be shaped; the elbow is placed between the first arc-shaped limiting check ring 9 and the second arc-shaped limiting check ring 10, the first arc-shaped limiting check ring 9 and the second arc-shaped limiting check ring 10 limit the elbow, the elbow is prevented from moving automatically under the action of thrust in the process of internal stay arc-straightening processing of the elbow, and the arc-straightening processing of the elbow is ensured to be completed smoothly.

The arc pressing and covering machine comprises a frame 1, a second driving cylinder 11 and a pressing and covering die 12, wherein the second driving cylinder 11 is arranged on the frame 1, the pressing and covering die 12 is arranged at the output end of the second driving cylinder 11, and an arc-shaped die groove matched with the annular placing die groove 3 is formed in the pressing and covering die 12; before the inner support arc straightening processing of the elbow, the output end of the second driving cylinder 11 stretches, the press-covering die 12 moves downwards and presses and covers the elbow, the elbow enters into the arc-shaped die groove to limit the elbow, and meanwhile the outside of the elbow is molded, so that the arc straightening processing efficiency and accuracy of the elbow are further improved.

Specifically, two sides of an arc-shaped die groove on the press-covering die 12 are provided with arc-shaped limiting protrusions 13; further, the height of the arc-shaped limiting bulge 13 is smaller than the wall thickness of the elbow to be shaped; through the spacing protruding 13 of arc, can block solid spacing to elbow both ends tip, with the spacing retaining ring 9 of corresponding first arc and the spacing retaining ring 10 closure back of second arc, further guarantee the bend and place stability in annular place die cavity 3.

Specifically, the device further comprises a third driving cylinder 14, the second arc-shaped limiting check ring 10 is arranged on the die holder 2 in a vertically sliding mode, the third driving cylinder 14 is fixedly arranged at the bottom of the frame 1, and the second arc-shaped limiting check ring 10 is arranged at the output end of the third driving cylinder 14; the method comprises the steps that when an elbow is initially fed, the elbow is placed in an annular placing die groove 3 and far away from the lower part of a press covering die 12, at the moment, a second arc-shaped limiting retainer ring 10 is embedded into a die holder 2, the elbow is pushed along the annular placing die groove 3, the elbow is moved to be close to a position of a first arc-shaped limiting retainer ring 9, namely, the elbow is located below the press covering die 12, at the moment, the output end of a third driving cylinder 14 is extended, the second arc-shaped limiting retainer ring 10 limits the other end of the elbow, the elbow is subjected to arc-shaping processing, after shaping is finished, the output end of the third driving cylinder 14 is shortened, and the elbow is fed after the elbow is moved to be far away from the lower part of the press covering die 12; and the die 12 is far away from in the process of feeding or discharging the elbow, so that the damage to feeding staff caused by improper operation is avoided, and the safety of feeding and discharging the elbow is improved.

When the elbow is used, the elbow is placed in the annular placing die groove 3, the end part of the elbow, which is up to one end of the elbow, is pushed to be in close contact with the first arc-shaped limiting retainer ring 9 along the annular placing die groove 3, the third driving cylinder 14 acts, the second arc-shaped limiting retainer ring 10 is in close contact with the other end port of the elbow to limit the elbow, then the output end of the second driving cylinder 11 stretches, the pressing die 12 downwards moves and then covers the elbow, the arc-shaped die groove on the pressing die 12 and the annular placing die groove 3 are enclosed to form an elbow arc-shaped cavity, the first driving cylinder 6 acts, after being driven by the rack 8 and the fluted disc 7, the semi-ring frame 4 pushes the die ball 5 into the elbow, internal supporting arc-shaped processing is carried out on the elbow, and the arc-shaped shaping processing of the elbow is realized under the dual functions of internal supporting and external pressure molding.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The movable arc straightening machine is characterized by comprising a frame (1), a die holder (2) fixedly arranged on the frame (1) and an inner supporting arc straightening mechanism, wherein an annular die placing groove (3) is formed in the die holder (2);

the inner supporting arc straightening mechanism comprises a half ring frame (4) and a die ball (5) fixedly arranged on the half ring frame (4), the half ring frame (4) is rotatably arranged at the center of an annular die placing groove (3) on a die holder (2), and a driving mechanism for providing power for the rotation of the half ring frame (4) is arranged on the frame (1); and a limiting assembly for limiting the elbow to move is arranged in the annular placing die groove (3).

2. The movable arc straightening machine according to claim 1, characterized in that the driving mechanism comprises a first driving cylinder (6), a fluted disc (7) and a rack (8), wherein the fluted disc (7) is fixedly arranged at the central shaft of the semi-ring frame (4), the first driving cylinder (6) is fixedly arranged on the frame (1), the fluted disc (7) is fixedly arranged at the output end of the first driving cylinder (6), and the fluted disc (7) is meshed with the rack (8).

3. The movable arc straightening machine according to claim 2, characterized in that the limiting assembly comprises a first arc limiting retainer ring (9) and a second arc limiting retainer ring (10) which are arranged in the annular die placing groove (3).

4. A mobile arc straightening machine according to claim 3, further comprising a press-cover arc straightening mechanism, wherein the press-cover arc straightening mechanism comprises a second driving cylinder (11) arranged on the frame (1) and a press-cover die (12) arranged at the output end of the second driving cylinder (11), and the press-cover die (12) is provided with an arc-shaped die groove matched with the annular placing die groove (3).

5. The movable arc straightening machine according to claim 4, characterized in that arc limiting protrusions (13) are arranged on two sides of the arc-shaped die groove on the press covering die (12).

6. The movable arc straightening machine according to claim 5, further comprising a third driving cylinder (14), wherein the second arc limiting retainer ring (10) is slidably mounted on the die holder (2) up and down, the third driving cylinder (14) is fixedly mounted at the bottom of the frame (1), and the second arc limiting retainer ring (10) is mounted at the output end of the third driving cylinder (14).