CN215965853U - Bulging die for bent pipe - Google Patents

Abstract

The utility model discloses a bulging die for a bent pipe, which comprises: the fixed die comprises a bent die clamping assembly, a fixed die seat assembly and a straight die clamping assembly, wherein the fixed die seat assembly is provided with a mounting groove for accommodating the bent die clamping assembly, the bent die clamping assembly is provided with a clamping cavity for accommodating a bent part of a bent pipe, and the straight die clamping assembly is provided with a through hole for accommodating a straight part of the bent pipe; the movable mould comprises a first movable mould component and a second movable mould component which can be switched, the first movable mould component is provided with a first movable mould base and a first insert, the first movable mould base is provided with a groove for accommodating the first insert, the first insert is positioned in the first movable mould base, the second movable mould component is provided with a second movable mould base, a second insert and a core rod, the second insert is positioned in the second movable mould base, and the core rod is positioned in the second insert. The utility model has compact structure and convenient operation in the bulging process; the first movable die assembly and the second movable die assembly can respectively bulge different parts of the bent pipe, machining procedures are reduced, and bulging efficiency is improved.

Description

Bulging die for bent pipe

Technical Field

The utility model relates to the field of bulging dies, in particular to a bulging die for a bent pipe.

Background

People often can process the return bend in daily production, wherein, carry out bulging wide application in fields such as electric power, car to the return bend, need carry out the bulging to the return bend if producing automobile engine cooling water injection well choke, at some bulging in-process, need carry out bulging many times to the return bend, under the cooperation of mould, the return bend can realize the bulging, consequently, the bulging mould plays an important role to the bulging of return bend, and the bulging mould is directly influencing the bulging effect of return bend.

However, the conventional bulging die for bent pipes can only bulge one part of the bent pipe, and for bent pipes requiring bulging at different parts, the bent pipes need to be taken out and then bulged by using another bulging die, so that the process is complicated and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the bulging die for the bent pipe is compact in structure and convenient to operate, and can bulge different parts of the bent pipe and improve bulging efficiency.

According to an embodiment of the utility model, the bulging die of the bent pipe comprises: the fixed die comprises a bent die clamping assembly, a fixed die seat assembly and a straight die clamping assembly, wherein the fixed die seat assembly is provided with a mounting groove for accommodating the bent die clamping assembly, the bent die clamping assembly is provided with a clamping cavity for accommodating a bent part of a bent pipe, and the straight die clamping assembly is provided with a through hole for accommodating a straight part of the bent pipe; the movable mould comprises a first movable mould component and a second movable mould component which can be switched, the first movable mould component is provided with a first movable mould base and a first insert, the first movable mould base is provided with a groove for accommodating the first insert, the first insert is positioned in the first movable mould base, the second movable mould component is provided with a second movable mould base, a second insert and a core rod, the second movable mould base is provided with a groove for accommodating the second insert, the second insert is positioned in the second movable mould base, and the core rod is positioned in the second insert.

The bulging die for the bent pipe provided by the embodiment of the utility model at least has the following beneficial effects:

the structure is compact, and the bulging process is convenient to operate; the cover half presss from both sides the return bend and tightly fixes, first movable mould subassembly takes shape first boss, switch over second movable mould subassembly again and carry out the shaping of second boss to the return bend, therefore, can carry out the bulging to the different positions of return bend, reduce manufacturing procedure, improve bulging efficiency, and the department of buckling of return bend is close to first boss, take place to warp easily at the bulging in-process, the curved part die clamping assembly of cover half can press from both sides the curved part of return bend tightly, prevent that the return bend from taking place to warp, the shaping of first boss has been guaranteed.

According to some embodiments of the utility model, the bend clamp die assembly is comprised of a bend upper clamp die and a bend lower clamp die.

The beneficial results are: the bending part clamping die assembly is composed of a bending part upper clamping die and a bending part lower clamping die, so that the bending part of the bent pipe is conveniently clamped, and the bending part of the bent pipe can be prevented from deforming when the bent pipe is subjected to stamping bulging.

According to some embodiments of the utility model, the fixed die holder assembly is composed of an upper die holder and a lower die holder.

The beneficial results are: the fixed die seat assembly consists of an upper die seat and a lower die seat, so that the fixed die seat is convenient to mount and dismount, the whole bulging process is stable, and the reliability of the bulging die is improved.

According to some embodiments of the utility model, the straight part clamp die assembly is composed of a straight part upper clamp die and a straight part lower clamp die.

The beneficial results are: the straight part clamping die assembly consists of a straight part upper clamping die and a straight part lower clamping die, so that the straight part of the bent pipe is conveniently clamped, and the straight part of the bent pipe can be prevented from deforming when the bent pipe is stamped.

According to some embodiments of the utility model, the bend upper clamp die has a first bend groove and the bend lower clamp die has a second bend groove.

The beneficial results are: the upper clamping die of the bent part is provided with a first bent groove, the lower clamping die of the bent part is provided with a second bent groove, the first bent groove and the second bent groove are combined to form a clamping cavity, the bent part of the bent pipe is abutted and limited with the first bent groove and the second bent groove, the bent part of the bent pipe is clamped, and the bent pipe is prevented from shifting in the bulging process.

According to some embodiments of the utility model, the upper bend clamp die has an upper clamp die recess, the lower bend clamp die has a lower clamp die recess, the upper die base has an upper die base recess, the lower die base has a lower die base recess, the stationary die further has a square key assembly, the square key assembly includes an upper key and a lower key, the upper key is located between the upper bend clamp die and the upper die base, and the lower key is located between the lower bend clamp die and the lower die base.

The beneficial results are: the upper key is located between the upper clamping die and the upper die base in the bent part, the upper clamping die groove is abutted to the upper die base in a limiting mode, the lower key is located between the lower clamping die and the lower die base in the bent part, the lower clamping die groove is abutted to the lower die base in a limiting mode, the upper key and the lower key are arranged in order to prevent the upper clamping die and the lower clamping die in the bent part from offsetting in the bulging process, the upper clamping die and the lower clamping die in the bent part are made to have stability, and a better bulging effect is achieved.

According to some embodiments of the utility model, the fixed die further comprises a plurality of cushion blocks, and the cushion blocks are respectively positioned between the upper clamping die of the bent part and the upper die holder and between the lower clamping die of the bent part and the lower die holder.

The beneficial results are: the cushion blocks are arranged between the upper clamping die and the upper die base of the bent part and between the lower clamping die and the lower die base of the bent part, so that the fixed die structure is more compact, the strength of the die is increased, and gaps between the upper clamping die and the upper die base of the bent part and between the lower clamping die and the lower die base of the bent part are avoided, so that the bent part clamping die assembly deforms.

According to some embodiments of the utility model, the first insert has a first punch out for shaping the first boss.

The beneficial results are: through setting up first die-cut at first mold insert, in the punching press bulging, when first movable mould seat pressed the return bend, first die-cut made the return bend take place deformation to form first boss, guaranteed the shaping of first boss.

According to some embodiments of the utility model, the second insert has a second punch out for shaping the second boss.

The beneficial results are: through setting up the second die-cut at the second mold insert, in the punching press bulging, when the second movable mould seat pressed the return bend, the plug lets in the straight portion of return bend, and the second die-cut makes the return bend take place deformation, forms the second boss, has guaranteed the shaping of second boss.

Drawings

The utility model will be apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an exploded view of a first movable die assembly formed in cooperation with a stationary die;

FIG. 2 is a schematic view of a mold clamping assembly for a bending section;

FIG. 3 is an exploded view of a second movable die assembly formed in cooperation with a stationary die;

FIG. 4 is a schematic view of a stationary mold structure;

FIG. 5 is an exploded view of the stationary mold structure;

FIG. 6 is a schematic view of a first movable mold assembly;

FIG. 7 is a schematic view of a second movable mold assembly.

Reference numerals: the die comprises a bent part die clamping assembly 100, a fixed die holder assembly 110, a straight part die clamping assembly 120, a first movable die assembly 130, a second movable die assembly 140, a first movable die holder 150, a first insert 160, a second movable die holder 170, a second insert 180, a core rod 190, a bent part upper die clamping 200, a bent part lower die clamping 210, an upper die holder 220, a lower die holder 230, a straight part upper die clamping 240, a straight part lower die clamping 250, a first bent groove 260, a second bent groove 270, an upper die clamping groove 280, a lower die clamping groove 290, an upper die holder groove 300, a lower die holder groove 310, an upper key 320, a lower key 330, a cushion block 340, a first punched groove 350, a second punched groove 360, a first boss 370 and a second boss 380.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that the terms mounted, connected and the like are to be construed broadly and their specific meanings in the present invention can be understood in a concrete manner by those skilled in the art, unless otherwise specifically defined and limited.

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 to 4, an expanding die fixed die for a bent pipe according to an embodiment of the present invention includes:

the fixed die comprises a bent die clamping assembly 100, a fixed die holder assembly 110 and a straight die clamping assembly 120, wherein the fixed die holder assembly 110 is provided with a mounting groove for accommodating the bent die clamping assembly 100, the bent die clamping assembly 100 is provided with a clamping cavity for accommodating a bent pipe bent part, and the straight die clamping assembly 120 is provided with a through hole for accommodating a bent pipe straight part;

moving dies comprising a first moving die assembly 130 and a second moving die assembly 140, the first moving die assembly 130 having a first moving die holder 150 and a first insert 160, the first moving die holder 150 having a recess for receiving the first insert 160, the first insert 160 being located in the first moving die holder 150, the second moving die assembly 140 having a second moving die holder 170, a second insert 180 and a core rod 190, the second moving die holder 170 having a recess for receiving the second insert 180, the second insert 180 being located in the second moving die holder 170, the core rod 190 being located in the second insert 180.

Therefore, the fixed die and the movable die are compact in structure, and the bulging process is stable; the bent pipe is fixed by the fixed die, and different parts of the bent pipe can be respectively expanded through the first movable die assembly 130 and the second movable die assembly 140, so that the processing procedures are reduced, and the expansion efficiency is improved.

Referring to fig. 2, the bending portion clamping die assembly 100 is composed of a bending portion upper clamping die 200 and a bending portion lower clamping die 210, the bending portion upper clamping die 200 is provided with a first bending groove 260, the bending portion lower clamping die 210 is provided with a second bending groove 270, the bending portion upper clamping die 200 is matched with the bending portion lower clamping die 210, the first bending groove 260 and the second bending groove 270 can form a clamping cavity capable of accommodating a bending portion of a bent pipe, the outer wall of the bending portion of the bent pipe is abutted and limited with the first bending groove 260 and the second bending groove 270, so that the bending portion of the bent pipe is clamped, when the bent pipe is subjected to stamping bulging, the bent pipe is prevented from moving in a bulging process, and the bending portion of the bent pipe is prevented from deforming, therefore, the bent pipe can be prevented from deforming while being subjected to bulging by the first bending groove 260 arranged on the bending portion upper clamping die 200 and the second bending portion lower clamping die 270 arranged on the bending portion upper clamping die 200.

Specifically, the die holder assembly comprises an upper die holder 220 and a lower die holder 230, so that the die holder can be conveniently mounted and dismounted, the upper die holder 220 and the lower die holder 230 are combined to form a mounting groove for accommodating the bent part die clamping assembly 100, the bent part die clamping assembly 100 is mounted in the mounting groove, the whole bulging process can be stable by arranging the upper die holder 220 and the lower die holder 230, and the reliability of the bulging die is improved.

Referring to fig. 5, wherein the upper bending portion clamping die 200 is provided with an upper clamping die groove 280, the upper clamping die groove 280 is located at a side of the upper bending portion clamping die 200 away from the first bending groove 260, the lower bending portion clamping die 210 is provided with a lower clamping die groove 290, and the lower clamping die groove 290 is located at a side of the lower bending portion clamping die 210 away from the second bending groove 270; the upper die holder 220 is provided with an upper die holder groove 300, the upper die holder groove 300 is positioned at one side of the upper die holder 220 close to the bent upper clamping die 200, the lower die holder 230 is provided with a lower die holder groove 310, and the lower die holder groove 310 is positioned at one side of the lower die holder 230 close to the bent lower clamping die 210.

It is worth mentioning that the fixed die is further provided with a square key assembly, the square key assembly comprises an upper key 320 and a lower key 330, the upper key 320 is positioned between the upper clamping die 200 and the upper die base 220 of the bent portion, the upper key 320 is respectively abutted and limited with the upper clamping die groove 280 and the upper die base groove 300, the lower key 330 is positioned between the lower clamping die 210 and the lower die base 230 of the bent portion, and the lower key 330 is respectively abutted and limited with the lower clamping die groove 290 and the lower die base groove 310.

Therefore, the upper key 320 is located between the upper die clamping groove 280 and the upper die holder groove 300, the lower key 330 is located between the lower die clamping groove 290 and the lower die holder groove 310, and has a limiting effect on the bent portion die clamping assembly 100, and by arranging the upper key 320 and the lower key 330, the bent portion die clamping assembly 100 can be prevented from sliding when the movable die presses the bent pipe in the stamping and bulging process, so that the bent portion die clamping assembly 100 has stability, and the bulging of the bent pipe can be smoothly completed.

Specifically, the fixed mold further has a plurality of spacers 340, and the spacers 340 are respectively located between the upper clamp mold 200 and the upper mold base 220 of the bend portion and between the lower clamp mold 210 and the lower mold base 230 of the bend portion, as shown in fig. 5 in detail.

The cushion blocks 340 are arranged between the bent part upper clamping die 200 and the upper die base 220 and between the bent part lower clamping die 210 and the lower die base 230, so that the fixed die structure is more compact, the strength of the die is increased, gaps are prevented from being formed between the bent part upper clamping die 200 and the upper die base 220 and between the bent part lower clamping die 210 and the lower die base 230, and the bent part clamping die assembly 100 is deformed.

Specifically, referring to fig. 3, the straight clamping die assembly 120 is composed of a straight upper clamping die 240 and a straight lower clamping die 250. Through setting up clamp die 240 on the straight portion and clamp die 250 under the straight portion, can press from both sides tightly the straight portion of return bend, when the return bend carries out the punching press, can avoid the straight portion of return bend to take place to warp.

Referring to fig. 6, the first insert 160 is provided with a first punch groove 350.

By providing the first punch groove 350 in the first insert 160, in the press bulging, in order to prevent the first movable die holder 150 from pressing the bent pipe, the first punch groove 350 deforms the bent pipe, thereby forming the first boss 370, and ensuring the formation of the first boss 370.

Referring to fig. 7, the elbow is expanded by providing a second plunge groove 360 in the second insert 180.

In the secondary stamping and bulging, the straight part of the bent pipe is clamped by the straight part clamping die assembly 120, when the second movable die holder 170 presses the bent pipe, the core rod 190 is introduced into the straight part of the bent pipe to support the inner wall of the straight part of the bent pipe, and the bent pipe is deformed by the second punching groove 360, so that the second boss 380 is formed, and the forming of the second boss 380 is ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (9)

1. An expanding die for a bent pipe, comprising:

the fixed die comprises a bent die clamping assembly (100), a fixed die holder assembly (110) and a straight die clamping assembly (120), wherein the fixed die holder assembly (110) is provided with a mounting groove for accommodating the bent die clamping assembly (100), the bent die clamping assembly (100) is provided with a clamping cavity for accommodating a bent pipe bent part, and the straight die clamping assembly (120) is provided with a through hole for accommodating a bent pipe straight part;

a movable die comprising a first movable die assembly (130) and a second movable die assembly (140) that are switchable, the first movable die assembly (130) is used for forming a first boss (370), the second movable die assembly (140) is used for forming a second boss (380), the first movable die assembly (130) having a first movable die holder (150) and a first insert (160), the first movable die holder (150) is provided with a groove for accommodating the first insert (160), the first insert (160) is located within the first die holder (150), the second die assembly (140) has a second die holder (170), a second insert (180), and a core pin (190), the second movable die holder (170) is provided with a groove for accommodating the second insert (180), the second insert (180) is located within the second moving die holder (170), and the core rod (190) is located within the second insert (180).

2. The pipe bulging die of claim 1, wherein the bend clamp die assembly (100) is comprised of a bend upper clamp die (200) and a bend lower clamp die (210).

3. The pipe bending die of claim 2, wherein the fixed die holder assembly (110) is composed of an upper die holder (220) and a lower die holder (230).

4. The pipe bulging die of claim 1, wherein the straight portion clamp die assembly (120) is comprised of a straight portion upper clamp die (240) and a straight portion lower clamp die (250).

5. The pipe bending die according to claim 2, wherein the bending portion upper clamp die (200) has a first bending groove (260), and the bending portion lower clamp die (210) has a second bending groove (270).

6. The pipe bulging die of claim 3, wherein the bend upper clamp die (200) has an upper clamp die recess (280), the bend lower clamp die (210) has a lower clamp die recess (290), the upper die shoe (220) has an upper die shoe recess (300), the lower die shoe (230) has a lower die shoe recess (310), the stationary die further has a square key assembly comprising an upper key (320) and a lower key (330), the upper key (320) being located between the bend upper clamp die (200) and the upper die shoe (220), the lower key (330) being located between the bend lower clamp die (210) and the lower die shoe (230).

7. The die for bulging elbow pipe according to claim 3, wherein the stationary die further comprises a plurality of spacers (340), and the spacers (340) are respectively located between the upper bend clamping die (200) and the upper die holder (220) and between the lower bend clamping die (210) and the lower die holder (230).

8. The bend pipe bulging die of claim 1, wherein the first insert (160) has a first punch groove (350), the first punch groove (350) being for forming the first boss (370).

9. The bend pipe bulging die of claim 1, wherein the second insert (180) has a second punch groove (360), the second punch groove (360) being for forming the second boss (380).

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