CN215544252U - Gradual change section steel pipe embossing mold utensil - Google Patents

Abstract

The utility model provides a gradual change section steel pipe pressing die which comprises an upper die and a lower die, wherein the upper die comprises a top plate, the bottom of the top plate is fixedly connected with a plurality of middle die press plates, the number of the middle die press plates is multiple, the middle die press plates are arranged in parallel at equal intervals, the lower die comprises a bottom plate, the top of the bottom plate is fixedly connected with a plurality of middle die support plates, the number of the middle die support plates is multiple, the middle die support plates are arranged in parallel at equal intervals, the gradual change section steel pipe pressing die belongs to the technical field of gradual change section steel pipe pressing dies, and the problems that in the traditional forming process, creases are difficult to form or arc sections are easy to occur, the radian appearance quality is poor, the staggered edge amount of pipe section assembly is out of tolerance, and the subsequent finishing work amount is large are solved.

Description

Gradual change section steel pipe embossing mold utensil

Technical Field

The utility model relates to the technical field of a pressing die for a steel pipe with a gradual change section, in particular to a pressing die for a steel pipe with a gradual change section of a round sky and a square earth.

Background

At present, in the process of forming a gradual change section steel pipe, particularly a thick steel plate, an arc section has an obvious stress state, each traditional arc section unit consists of a straight line and a radius arc, stress concentration is obvious at the tangent point of the straight line and the radius arc, the forming defect of the steel plate is mainly concentrated at the position, and the traditional forming process is difficult to form because the arc section is too small and is rolled by a plate rolling machine at the interface close to a square section; especially, at the right-angle position, the tearing state can be generated due to overlarge external force, and the arc section is too small and is difficult to be formed by rolling by a plate rolling machine at the interface close to the square section; especially for the steel pipe tile with the gradually changed section of the square section, the common plate rolling machine can not be used for construction. If use monolithic type mould according to the traditional mode that the roll extrusion line of arc section was rolled over and is pressed, the arc section comprises a section broken line after the shaping, and appearance quality is relatively poor after the arc section shaping, and later stage finishing process volume is great, and is inefficient, and when the preparation was accomplished back gradual change section steel pipe and adjacent tube coupling group, adjacent mouth of pipe misalignment volume was serious out-of-tolerance, and the steel pipe pressure joint during the installation, the finishing work volume is big, consumes a large amount of manpower and materials, the efficiency of construction is low, and construction cost is big. The conventional manufacturing method of the gradual change section steel pipe is difficult to meet the arc section manufacturing work of the steel pipe at the square opening with larger steel plate thickness and smaller radian.

Under the circumstances, in order to solve the above problems, we must improve the manufacturing mold and the construction method to make the manufacturing of the steel pipe gradual change section more efficient, convenient, safe and reliable, and the manufactured steel pipe tile has higher molding quality.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gradual change section steel pipe pressing mold, aiming at solving the problems that a traditional mode of bending and pressing a single-chip mold according to an arc section rolling line is adopted, a formed arc section is composed of a section of folding line, the appearance quality of the formed arc section is poor, the amount of a later finishing process is large, the efficiency is low, the misalignment amount of adjacent pipe orifices is seriously out of tolerance when a gradual change section steel pipe and an adjacent pipe joint are combined and aligned after the gradual change section steel pipe is manufactured, the amount of steel pipe seam pressing and finishing work is large during installation, a large amount of manpower and material resources are consumed, the construction efficiency is low, and the construction cost is high.

In order to achieve the purpose, the utility model adopts the following technical scheme: a gradual change section steel pipe pressing die comprises an upper die and a lower die, wherein the upper die comprises a top plate, the bottom of the top plate is fixedly connected with a plurality of middle die pressing plates, the middle die pressing plates are arranged in parallel at equal intervals, the bottom of the top plate is fixedly connected with a reinforcing pressing plate, and the reinforcing pressing plate is fixedly connected with the middle die pressing plates;

the lower mould comprises a bottom plate, the top of the bottom plate is fixedly connected with a plurality of middle mould supporting plates, the number of the middle mould supporting plates is multiple, the middle mould supporting plates are arranged in parallel at equal intervals, the top of the bottom plate is fixedly connected with a reinforcing supporting plate, and the reinforcing supporting plate is fixedly connected with the middle mould supporting plates;

the bottom of the middle die pressing plate is provided with a lower pressing head, the lower pressing head comprises two straight line sections and an arc-shaped section, the straight line sections are symmetrically distributed at two end parts of the arc-shaped section, an angle of 80 degrees is formed between the two straight line sections, and the arc-shaped ends of the middle die pressing plates gradually change from one end to the other end;

the number of the middle die supporting plates is the same as that of the middle die pressing plates, and notches corresponding to the lower pressing heads are formed in the tops of the middle die supporting plates

Reinforcing rib plates are fixedly connected between the middle die pressing plates and positioned on two sides of the reinforcing pressing plates.

As a further description of the above technical solution:

the bottom of the top plate and two ends of the middle die pressing plate are fixedly connected with a head die pressing plate and a tail die pressing plate respectively, and the head die pressing plate is in an isosceles triangle with an apex angle of 80 degrees.

As a further description of the above technical solution:

and a T-shaped beam is fixedly connected between the head die pressing plate and the top plate.

As a further description of the above technical solution:

the bottom of the top plate and two sides of the middle die pressing plate are fixedly connected with upper reinforcing coamings, and the inner side surfaces of the upper reinforcing coamings are fixedly connected with the side surfaces of the middle die pressing plate.

As a further description of the above technical solution:

and the top of the bottom plate and two ends of the middle mold supporting plate are respectively and fixedly connected with a head mold supporting plate and a tail mold supporting plate.

As a further description of the above technical solution:

the top of the bottom plate is fixedly connected with lower reinforcing coamings on two sides of the middle die supporting plate, and the inner side surfaces of the lower reinforcing coamings are fixedly connected with the side surfaces of the middle die supporting plate.

The utility model has the beneficial effects that: by arranging the gradual change section steel pipe pressing die, the problems that the traditional forming process is difficult to form or the arc section is easy to have creases, the radian appearance quality is poor, the staggered edge amount of the pipe joint assembly is over-poor and the subsequent finishing work amount is large are solved; meanwhile, due to the consideration of the rebound condition of the steel plate after pressing and the shaping of the welding stiffening ring after pressing, the gradient steel pipe tile is formed at one time and the manufacturing of the gradient section of the steel pipe becomes more convenient, safe and reliable through the pressing of the gradient steel pipe pressing die.

Drawings

To more clearly illustrate a progressive section steel tube pressing die, the following figures are shown;

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the upper tire of the present invention;

FIG. 3 is a bottom view of the upper tire of the present invention;

FIG. 4 is a front view of the upper tire of the present invention;

FIG. 5 is a perspective view of the lower mold of the present invention;

FIG. 6 is a front view of the lower mold of the present invention;

FIG. 7 is a top view of the lower mold of the present invention;

FIG. 8 is a line drawing of the sheet of the pressed steel tube section of the present invention.

Wherein the reference numbers in the figures;

1. mounting a mould; 101. a top plate; 102. a tail mold platen; 103. a head mold platen; 104. a middle mold platen; 105. Reinforcing a rib plate; 106. an upper reinforcing coaming; 107. a T-shaped beam; 108. reinforcing the pressing plate; 2. a lower mould; 201. a base plate; 202. A middle mold support plate; 203. lower reinforcing coamings; 204. reinforcing the supporting plate; 205. a head mold support plate; 206. and a tail mold support plate.

Detailed Description

Referring to fig. 1-8, a progressive steel pipe pressing mold provided in an embodiment of the present application is shown, including an upper mold 1 and a lower mold 2, where the upper mold 1 includes a top plate 101, a plurality of intermediate mold press plates 104 are fixedly connected to the bottom of the top plate 101, the number of the intermediate mold press plates 104 is multiple, the plurality of intermediate mold press plates 104 are arranged in parallel and at equal intervals, a reinforcing press plate 108 is fixedly connected to the bottom of the top plate 101, and the reinforcing press plate 108 is fixedly connected to the plurality of intermediate mold press plates 104;

the lower mould 2 comprises a bottom plate 201, wherein the top of the bottom plate 201 is fixedly connected with a plurality of middle mould supporting plates 202, the number of the middle mould supporting plates 202 is multiple, the middle mould supporting plates 202 are arranged in parallel at equal intervals, the top of the bottom plate 201 is fixedly connected with a reinforcing supporting plate 204, and the reinforcing supporting plate 204 is fixedly connected with the middle mould supporting plates 202;

the bottom of the middle die pressing plate 104 is provided with a lower pressing head, the lower pressing head comprises two straight line sections and an arc-shaped section, the straight line sections are symmetrically distributed at two end parts of the arc-shaped section, an angle of 80 degrees is formed between the two straight line sections, and the arc-shaped ends of the middle die pressing plates 104 gradually change from one end to the other end;

the number of the middle mold support plates 202 is the same as that of the middle mold press plates 104, and a recess corresponding to the lower ram is formed at the top of the middle mold support plates 202.

Manufacturing an upper die:

preferably, the integral die is a 25mm steel plate; the stress of the self-body is increased; the upper die is provided with a T-shaped beam in the middle stress position, and the T-shaped beam vertical ribs are made of 40mm steel plates, so that the rigidity and stability of the upper die are improved, and the force of a hydraulic cylinder of the press machine can be uniformly transmitted to the lower die.

As preferred, go up the mould periphery and set up the reinforcement bounding wall, the bounding wall adopts 25mm thick steel plate preparation, and the bounding wall welding is consolidated, and simultaneously, every section mould neutral gear department increases 3 reinforcing rib boards in addition, increases the overall stability and the atress performance of mould.

Preferably, in order to ensure the assembly precision of the die pressing plate and the T-shaped beam, the die pressing plate is grooved when blanking is carried out on the central line position, the size of the groove is determined according to the size of the T-shaped beam vertical rib, and the grooved position of the central line of the die pressing plate and the T-shaped beam vertical rib are welded into a whole.

All go up the mould clamp plate and all consider the resilience after the steel sheet suppression has removed the mould, for guaranteeing the shaping quality, reduce the technological process that the shaping defect set up, go up the mould and all set up the region of compensation resilience at the segmental arc and the straightway of mould clamp plate, guarantee in the final product that the segmental arc is unanimous with the requirement size after the rebound. In order to achieve the effect of compensation resilience, the arc section of the die pressing plate is 20-30 mm smaller than the design radius of the inner diameter of the tube wall of the gradual change tube at the corresponding position when the radian is set, and the included angle of two sides of the straight line section of the die pressing plate is set to be 80 degrees (smaller than the corner of the gradual change tube by 10 degrees). The arc section of the upper die pressing plate is tangentially connected with the straight line section.

Preferably, in order to ensure the tile pressing quality of the vertex position of the rectangular section of the transition pipe, the pressing plate at the head of the upper die close to the vertex of the rectangular section of the transition pipe is not provided with an arc section and is provided with a 80-degree triangular pressing plate. The middle die pressing plate and the tail die pressing plate of the upper die are both composed of arc sections and straight sections.

Preferably, in order to ensure that all the pressing plates of the upper die are simultaneously stressed in the process of pressing the steel plate by the die, the stability of the upper die in the manufacturing process of the gradient tube tile is ensured, the heights of all the pressing plates of the upper die are consistent, the vertex positions are on the same straight line, and the pressing process is simultaneously stressed.

Preferably, the pressing plates of the upper die are arranged at equal intervals, and the arc sections and the straight sections of the pressing plates of the die are designed according to the inner diameter and the angle of the wall of the gradual change pipe at the corresponding position, so that the pressing plates of the upper die form a die with gradual change taper similar to the gradual change steel pipe, and the manufacturing precision of the gradual change pipe tile is ensured.

Manufacturing a lower die:

as preferred, the lower mould both sides set up the reinforcement bounding wall, and the bounding wall adopts 25mm thick steel plate preparation, and the bounding wall welding is consolidated, and simultaneously, every section mould backup pad neutral gear department increases 3 and consolidates the gusset in addition, increases the overall stability and the atress performance of mould. The height of the supporting plate reinforcing rib plate at the lowest point is equal to the height of the lowest point of the supporting plate, so that the stability of the die is improved, and meanwhile, the surface of the gradient tube tile is protected in the pressing process of the gradient tube tile, and the surface scratch is reduced.

Preferably, the press plates of all the lower dies consider the rebound of the steel plate after the dies are removed in the pressing process, the technological process is set for ensuring the forming quality and reducing the forming defects, the lower dies are provided with areas for compensating the rebound at the arc sections and the straight line sections of the die support plates, and the situation that the rebound of the arc sections in the final product is consistent with the required size is ensured. In order to achieve the effect of compensation springback, the arc section of the lower die supporting plate is larger than the radian radius of the die pressing plate at the same position by the size of the wall thickness of a gradually-changed steel pipe, the included angle of two sides of the straight line section of the lower die supporting plate is set to be 80 degrees and is parallel to the straight line section of the die pressing plate at the corresponding position, and the arc section of the lower die supporting plate is tangent to the straight line section.

Preferably, in order to ensure the tile pressing quality of the vertex position of the rectangular section of the transition pipe, the lower die head supporting plate close to the vertex of the rectangular section of the transition pipe is not provided with an arc section and is provided with a 80-degree triangular pressing plate, and the lower die supporting plate is parallel to the straight line section of the upper die pressing plate at the corresponding position. The middle die supporting plate and the tail die supporting plate of the lower die are both composed of arc sections and straight sections.

Preferably, in order to ensure that the supports of the lower die are stressed simultaneously in the process of pressing the steel plate by the die, the stability of the lower die in the manufacturing process of the gradual change pipe tile is consistent in height of the supports of the lower die, the lowest point of the supporting plate is positioned on the same straight line, in the pressing process, the gradual change pipe tile is stressed uniformly, unbalanced displacement is avoided, abnormal movement of the central line of the arc section of the tile is avoided, and the manufacturing quality of the gradual change pipe is ensured.

Preferably, the supports of the lower die are arranged at equal intervals, and the arc section and the straight section of the die pressing plate are designed according to the die pressing plate at the corresponding positions, so that the inosculation of the upper die, the lower die and the pressed gradient tube is ensured, and the manufacturing precision of the gradient tube tile is ensured.

The flat section sets up R50mm circular arc transition with straight section link angle department on the bed die backup pad, because the steel sheet slides into the mould here when the mould suppression gradual change pipe tile, sets up the damage that the mould can significantly reduce the mould to gradual change tile surface of R50mm circular arc transition.

When the upper die and the lower die are assembled, the central line of the die, the corresponding lower die supporting plate and the central line of the upper die pressing plate are aligned; and the mould is leveled by using a level gauge, so that other influence factors except the stress direction are reduced. And the lower die is welded and fixed on a construction platform below the hydraulic press, and the upper die is welded and reinforced with the piston hammer of the press. The welding position periphery evenly sets up 6 ~ 8 groups and consolidates the gusset, guarantees welding strength to and the power of pneumatic cylinder can be even when mould suppression gradual change steel pipe transmits to last mould, increase lifting surface area and force stability.

A, determining the center line of an arc section according to a drawing; B. putting the steel plate into a gradual change section steel pipe pressing die; C. the center line of the arc section of the steel plate is aligned with the upper center line and the lower center line of the pressing die of the gradual change section; D. pressing down; e. Maintaining the pressure; F. discharging the plate; G. and (6) pairing.

Preferably, in the step F, after the steel pipe tile is taken out, the rebound arc tends to 0 under the subsequent shaping operation of welding the stiffening ring on the steel pipe tile, so as to ensure the manufacturing quality of the gradually-changed steel pipe tile.

The utility model has the advantages that the problems that the traditional forming process is difficult to form or the arc section is easy to have creases, the radian appearance quality is poor, the staggered edge amount of the pipe joint assembly is over-poor and the subsequent finishing work amount is large are solved by arranging the gradual change section steel pipe pressing die; meanwhile, due to the consideration of the rebound condition of the steel plate after pressing and the shaping of the welding stiffening ring after pressing, the gradient steel pipe tile is formed at one time and the manufacturing of the gradient section of the steel pipe becomes more convenient, safe and reliable through the pressing of the gradient steel pipe pressing die.

The selected gradual change pipe and the die are square pipe joints with a square opening of 4000mm multiplied by 5100mm, a round opening of 5100mm in diameter, a plate thickness of 30mm and a square-round-square.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that relational terms such as "first" and "second," and the like, may be 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. The utility model is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (7)

1. The utility model provides a gradual change section steel pipe embossing mold utensil, includes mould (1), lower mould (2), its characterized in that:

the upper mould (1) comprises a top plate (101), the bottom of the top plate (101) is fixedly connected with a plurality of middle mould pressing plates (104), the number of the middle mould pressing plates (104) is multiple, the middle mould pressing plates (104) are arranged in parallel at equal intervals, the bottom of the top plate (101) is fixedly connected with a reinforcing pressing plate (108), and the reinforcing pressing plate (108) is fixedly connected with the middle mould pressing plates (104);

the lower mould (2) comprises a bottom plate (201), the top of the bottom plate (201) is fixedly connected with a plurality of middle mould supporting plates (202), the number of the middle mould supporting plates (202) is multiple, the middle mould supporting plates (202) are arranged in parallel at equal intervals, the top of the bottom plate (201) is fixedly connected with a reinforcing supporting plate (204), and the reinforcing supporting plate (204) is fixedly connected with the middle mould supporting plates (202);

the bottom of the middle die pressing plate (104) is provided with a lower pressing head, the lower pressing head comprises two straight line sections and an arc-shaped section, the straight line sections are symmetrically distributed at two end parts of the arc-shaped section, an angle of 80 degrees is formed between the two straight line sections, and the arc-shaped ends of the middle die pressing plates (104) gradually change from one end to the other end;

the number of the middle die supporting plates (202) is the same as that of the middle die pressing plates (104), and notches corresponding to the lower pressing heads are formed in the tops of the middle die supporting plates (202).

2. The progressive steel tube pressing die of claim 1, wherein: reinforcing rib plates (105) are fixedly connected between the middle die pressing plates (104) and positioned at two sides of the reinforcing pressing plate (108).

3. The progressive steel tube pressing die of claim 2, wherein: the bottom of the top plate (101) and two ends of the middle mold pressing plate (104) are fixedly connected with a head mold pressing plate (103) and a tail mold pressing plate (102) respectively, and the head mold pressing plate (103) is in the shape of an isosceles triangle with an apex angle of 80 degrees.

4. The progressive steel tube pressing die of claim 3, wherein: and a T-shaped beam (107) is fixedly connected between the head die pressing plate (103) and the top plate (101).

5. The progressive steel tube pressing die of claim 4, wherein: the bottom of the top plate (101) and two sides of the middle die pressing plate (104) are fixedly connected with upper reinforcing coamings (106), and the inner side surfaces of the upper reinforcing coamings (106) are fixedly connected with the side surfaces of the middle die pressing plate (104).

6. The progressive steel tube pressing die of claim 5, wherein: the top of the bottom plate (201) and two ends of the middle mold supporting plate (202) are respectively and fixedly connected with a head mold supporting plate (205) and a tail mold supporting plate (206).

7. The progressive steel tube pressing die of claim 6, wherein: the top of the bottom plate (201) is located on two sides of the middle mold supporting plate (202) and is fixedly connected with lower reinforcing coamings (203), and the inner side faces of the lower reinforcing coamings (203) are fixedly connected with the side faces of the middle mold supporting plate (202).

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