CN219274155U - Stainless steel pipe bending die - Google Patents

Abstract

The utility model relates to the technical field of rotation of bent tube core beads of stainless steel tube dies, in particular to a stainless steel tube bending die. The utility model relates to a stainless steel pipe bending die, which comprises: a core rod body, one end of which is provided with a first connecting hole; the core rod connecting piece is detachably arranged in the first connecting hole; one end of the core rod connecting piece, which is positioned at the outer side, is provided with a first limiting hole; the core bead connecting piece is provided with a first limiting hole and a second limiting hole, and one end of the core bead connecting piece is positioned in the first limiting hole; the other end of the core bead connecting piece is provided with a second limiting hole; and the core bead is disc-shaped and provided with a central hole, the core bead connecting piece is positioned in the central hole, and the core bead is in threaded connection with the core bead connecting piece. According to the utility model, the core rod body, the core rod connecting piece and the core bead connecting piece are arranged, and the core beads are in threaded connection with the core bead connecting piece, so that the problems of wrinkling and thinning of the stainless steel tube can be relieved.

Description

Stainless steel pipe bending die

Technical Field

The utility model relates to the technical field of rotation of bent tube core beads of stainless steel tube dies, in particular to a stainless steel tube bending die.

Background

The water expansion pipe bending mold for stainless steel pipe is one kind of mechanical equipment for producing stainless steel pipe, and consists of pipe bending mechanism and water expansion rubber. When manufacturing the stainless steel bent pipe, the stainless steel pipe material is placed in a pipe bending mechanism, and then water swelling rubber is used for filling the inside of the pipe with water pressure. By applying the appropriate force and depending on the desired angle and angle radius, the stainless steel tube can be bent into the desired shape on the pipe bending mechanism. Because stainless steel pipes have high hardness and toughness, special dies are required to ensure accuracy of bending and to maintain the shape of the pipe during processing.

The existing stainless steel pipe water expansion pipe bending die mostly adopts a plurality of sections of core beads, the core beads are connected by adopting a universal ball head and chain connection mode, and when pipe bending is carried out, the core beads move along with the external shape of the pipe bending wheel die under the action of the external force of a machine table, so that the bent stainless steel pipe is driven to be molded.

In the existing pipe bending die, a core rod body is driven by a pipe bending machine table, then the core rod body drives a core rod connecting rod, the core rod connecting rod drives a core bead connecting piece, and the core bead connecting piece drives a core bead, so that the stainless steel pipe is bent and deformed, the core bead is in a passive state in the whole pipe bending process, the inner side of the bent pipe is easy to wrinkle due to gathering materials in the bending deformation process, the outer side of the bent pipe is easy to stretch, the wall thickness is thinned, and the existing core bead has no additional acting force on the inner wall of the stainless steel pipe due to the follow-up state, so that the problems of wrinkling and wall thickness thinning in the pipe bending process cannot be solved,

disclosure of Invention

The object of the present utility model is to solve at least some of the above existing problems.

In order to solve the technical problems, the stainless steel pipe bending die of the utility model comprises:

a core rod body, one end of which is provided with a first connecting hole;

the core rod connecting piece is detachably arranged in the first connecting hole; one end of the core rod connecting piece, which is positioned at the outer side, is provided with a first limiting hole;

the core bead connecting piece is provided with a first limiting hole and a second limiting hole, and one end of the core bead connecting piece is positioned in the first limiting hole; the other end of the core bead connecting piece is provided with a second limiting hole;

and the core bead is disc-shaped and provided with a central hole, the core bead connecting piece is positioned in the central hole, and the core bead is in threaded connection with the core bead connecting piece.

As a preferred embodiment of the stainless steel pipe bending die, the other end of the core rod connecting piece is provided with a second connecting hole, a screw hole is arranged between the first connecting hole and the second connecting hole, and the diameter of the screw hole is smaller than that of the first connecting hole and the second connecting hole;

the connecting device comprises a threaded piece, wherein the threaded piece is installed in the second connecting hole, and the threaded piece penetrates through the screw hole to be in threaded connection with the core rod connecting piece.

As a preferable implementation mode of the stainless steel pipe bending die, the central hole of the core bead is internally provided with a screw thread, and the outer ring of the core bead connecting piece is provided with a screw thread groove.

As a preferred embodiment of the stainless steel pipe bending die, the lower edge of the core bead connecting piece is provided with a first annular boss;

the central hole of the core bead is provided with a second annular boss, and the screw teeth are positioned on the inner wall of the second annular boss;

the second annular boss is adjacent to one surface of the first annular boss and is provided with an anti-locking convex ring.

As a preferred embodiment of the stainless steel tube bending die, the edge of the outer contour of the core bead is provided with an annular notch.

Advantageous effects

The present utility model solves the above existing problems and other existing problems not mentioned one by one above and brings at least the following innovative advantages accordingly:

1. according to the utility model, the core rod body, the core rod connecting piece and the core bead connecting piece are arranged, and the core beads are in threaded connection with the core bead connecting piece, so that the problems of wrinkling and thinning of the stainless steel tube can be relieved.

2. The first annular boss arranged in the core bead connecting piece and the second annular boss arranged in the central hole of the core play a role in pulling the core bead by using the core bead connecting piece; the anti-locking convex ring is arranged, so that a certain gap can be kept between the anti-locking convex ring and the core, and the anti-locking convex ring plays a role in anti-locking, so that the threaded connection between the core beads and the core bead connecting piece rotates more smoothly.

3. The ring-shaped notch arranged at the edge of the outer contour of the core bead 7 can be used for preventing the bending deformation of the bent pipe when the ring-shaped notch is provided with a plurality of core beads and is bent, and the ring-shaped notch of each core bead is abutted or adjacent to the other core bead.

Drawings

FIG. 1 is a perspective view of the present utility model;

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

FIG. 3 is a cross-sectional view of the "A-A" position of FIG. 2;

FIG. 4 is a perspective view of the component "core bead connector" of the present utility model;

FIG. 5 is an exploded view of a "core bead connector";

FIG. 6 is a perspective view of a component "core bead" of the present utility model;

FIG. 7 is another view of FIG. 6;

FIG. 8 is a view showing the effect of the present utility model applied to a stainless steel pipe;

FIG. 9 is a perspective view of a component "mandrel body" of the present utility model;

FIG. 10 is a perspective view of the component "mandrel connector" of the present utility model.

In the figure: 1. the core rod comprises a core rod body, a first connecting hole, a core rod connecting piece, a first limiting hole, a core bead connecting piece, a second limiting hole, a core bead, a central hole, a second connecting hole, a screw element, a screw thread groove, a first annular boss, a second annular boss, a locking preventing convex ring, a ring notch and a stainless steel tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the specific embodiments of the present disclosure.

Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present disclosure.

All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

As shown in fig. 1 to 10, the stainless steel pipe bending die of the present utility model comprises a core rod body 1, wherein one end of the core rod body 1 is provided with a first connecting hole 2; referring to fig. 3 and 9, the hole under the core rod body 1 is the first connection hole 2; comprising a core rod connector 3, fig. 10 shows a perspective view of the core rod connector 3, fig. 3 shows that the core rod connector 3 is detachably mounted in the first connection hole 2; one end of the core rod connecting piece 3 positioned at the outer side is provided with a first limiting hole 4; referring to fig. 3, the first limiting aperture 4 is the aperture below the mandrel connector 3. The device further comprises a core bead connector 5, wherein fig. 4 shows a perspective view of the core bead connector 5, and fig. 5 shows that the core bead connector 5 is formed by splicing two main bodies together; fig. 3 shows that, when mounted, one end of the bead connector 5 is located in the first limiting hole 4; fig. 4 shows that the other end of the bead connector 5 has a second limiting hole 6. Also included is a core bead 7, fig. 6 and 7 show that the core bead 7 is disc-shaped and has a central hole 8, the core bead connector 5 is located in the central hole 8, and the core bead 7 is in threaded connection with the core bead connector 5.

Referring to fig. 6 and 7, the central hole 8 of the core bead 7 is provided with a screw thread 12; referring to fig. 4 and 5, the outer ring of the bead connector 5 has a thread groove 13. The threaded connection between the core bead 7 and the core bead connector 5 is achieved by means of threads 12 and thread grooves 13.

Further, referring to fig. 1, 2 and 3, the other end of the mandrel connector 3 has a second connecting hole 9, and a screw hole 10 is provided between the first connecting hole 2 and the second connecting hole 9, and the diameter of the screw hole 10 is smaller than that of the first connecting hole 2 and the second connecting hole 9; comprises a screw 11, wherein the screw 11 is installed in the second connecting hole 9, and the screw 11 is connected with the core rod connecting piece 3 through the screw hole 10 in a threaded manner.

Further, referring to fig. 4 and 5, the lower edge of the bead connector 5 has a first annular boss 14. And referring to fig. 7 and 8, the central hole 8 of the core bead 7 is provided with a second annular boss 15, and the screw thread 12 is positioned on the inner wall of the second annular boss 15; the second annular boss 15 has an anti-lock collar 16 on a face thereof adjacent to the first annular boss 14.

Wherein, as shown in fig. 3, 7 and 8, the edge of the outer contour of the core bead 7 is provided with an annular notch 17. Wherein fig. 8 shows that the ring cut of each bead 7 abuts or is adjacent to another bead 7 between the plurality of beads 7 when bent. Thereby playing a role in reducing the wrinkling of the deformation of the bent pipe. Figure 8 also illustrates the effect of stainless steel tube 18 in achieving a bend under the influence of the present utility model.

The connection action relationship between the components of the above embodiments is as follows: referring to fig. 8, the machine external force drives the core rod body 1, the core rod body 1 drives the core rod connecting piece 3, the core rod connecting piece 3 drives the core bead connecting piece 5, the core bead connecting piece 5 drives the core bead 7 through the screw thread 12, the core bead 7 moves along with the core bead connecting piece 5, and the core bead 7 rotates due to the screw thread 12, and the stress state in the pipe is changed when the stainless steel pipe is bent through the rotation of the core bead 7, so that the wrinkling and thinning conditions of the stainless steel pipe are reduced.

The terms first, second and the like in the description and in the claims, are not used for any order, quantity or importance, but are used for distinguishing between different elements. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The preferred embodiments of the present utility model described above are not intended to limit the present utility model, and the scope of the present utility model is defined by the appended claims, and other embodiments can be obtained from the drawings without inventive faculty to those skilled in the art, and any modifications based on the claims of the present utility model are also the scope of the present utility model.

Claims (5)

1. Stainless steel pipe bending die, its characterized in that includes:

a core rod body, one end of which is provided with a first connecting hole;

the core rod connecting piece is detachably arranged in the first connecting hole; one end of the core rod connecting piece, which is positioned at the outer side, is provided with a first limiting hole;

the core bead connecting piece is provided with a first limiting hole and a second limiting hole, and one end of the core bead connecting piece is positioned in the first limiting hole; the other end of the core bead connecting piece is provided with a second limiting hole;

and the core bead is disc-shaped and provided with a central hole, the core bead connecting piece is positioned in the central hole, and the core bead is in threaded connection with the core bead connecting piece.

2. The stainless steel tube bending mold according to claim 1, wherein the other end of the core rod connecting piece is provided with a second connecting hole, a screw hole is arranged between the first connecting hole and the second connecting hole, and the diameter of the screw hole is smaller than that of the first connecting hole and the second connecting hole;

the connecting device comprises a threaded piece, wherein the threaded piece is installed in the second connecting hole, and the threaded piece penetrates through the screw hole to be in threaded connection with the core rod connecting piece.

3. The stainless steel tube bending die as set forth in claim 1, wherein said core bead has threads in a central bore thereof and said core bead connector has a thread groove in an outer ring thereof.

4. A stainless steel tube bending die as claimed in claim 3 wherein the lower edge of the core bead connector has a first annular boss;

the central hole of the core bead is provided with a second annular boss, and the screw teeth are positioned on the inner wall of the second annular boss;

the second annular boss is adjacent to one surface of the first annular boss and is provided with an anti-locking convex ring.

5. A stainless steel tube bending mould according to claim 1, wherein the rim of the outer profile of the core bead has an annular cut.

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