CN213728631U

CN213728631U - Heat setting mould for metal pipe

Info

Publication number: CN213728631U
Application number: CN202021976119.XU
Authority: CN
Inventors: 王云兵; 吴智明; 余越盛; 邵南; 訾振军
Original assignee: Hangzhou Derk Medical Technology Co ltd
Current assignee: Hangzhou Derk Medical Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-07-20
Anticipated expiration: 2030-09-10

Abstract

The utility model relates to a heat setting mould of metal tubular product, including the first die holder and the second die holder of mutual lock, the storage tank of placing metal tubular product is seted up to first die holder, and the part shape that the at least partly extension route of storage tank was made with metal tubular product is corresponding, and on the cross-section of storage tank, the holding groove width has the whole trend of narrowing to the tank bottom by the notch, and the second die holder has the layering that matches with the storage tank position, and the layering top surface has the depressed area that suits with metal tubular product outer wall shape. The shaping effect is better, the efficiency is higher, and the operation is convenient.

Description

Heat setting mould for metal pipe

Technical Field

The utility model relates to a heat setting mould especially relates to a heat setting mould of metal tubular product.

Background

Minimally invasive ablation is the intervention of an ablation catheter into the body and the treatment of the target site. Nitinol tubes with good elasticity are typically used as an important component in ablation catheters for shaping or establishing a channel. The shape of the nickel-titanium tube is also required according to the pathological position for ablation treatment, and the nickel-titanium tube can be pretreated by adopting a heat setting mode generally.

In the prior art, a mold for shaping a nickel-titanium tube in an ablation catheter generally has a mold cavity for placing the nickel-titanium tube, which is an annular groove formed in the outer circumference of the mold, and an additional fixing member is needed to fix the nickel-titanium tube in the groove, and finally, the metal tube and the mold are heated and molded together.

The inventor finds that the heat setting mould only aims at the nickel titanium pipe with a single type, has limited universality, is very inconvenient to operate, and also has the problems of insufficient productivity and the like due to the design of a mould cavity structure in the mass production process.

SUMMERY OF THE UTILITY MODEL

The application provides a heat setting mould of metal tubular product, improves the die cavity structure to the nickel titanium pipe that can only produce single model, the inconvenient scheduling problem of operation.

The heat setting die for the metal pipes comprises a first die holder and a second die holder which are mutually buckled, wherein the first die holder is provided with an accommodating groove for accommodating the metal pipes, at least one part of the accommodating groove is extended along a path corresponding to the shape of a part made of the metal pipes, and the width of the accommodating groove is reduced from a groove opening to the bottom of the accommodating groove;

the second die holder is provided with a pressing strip matched with the position of the accommodating groove, and the top surface of the pressing strip is provided with a concave area matched with the shape of the outer wall of the metal pipe.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the width of the accommodating groove is narrowed in a manner that the groove walls on the two sides gradually get closer from the notch to the groove bottom, or the groove walls on the two sides gradually get closer from the notch to the groove bottom and are in a step shape.

Optionally, the accommodating groove is a closed ring, the ring at least includes two area sections, and an extending path of each area section corresponds to a shape of a part made of the metal pipe.

Optionally, the ring is a plurality of inner and outer nested rings.

Optionally, the shape of the component is L-shaped, the turning part is a rounded corner structure, and the ring shape includes four region segments.

Optionally, the four area segments are sequentially connected end to form the ring shape.

Optionally, on the cross section of the pressing bar, the width of the pressing bar narrows towards the direction away from the second die holder, and the overall narrowing trend is matched with the overall narrowing trend of the width of the accommodating groove.

Optionally, a mounting hole corresponding to the position is formed between the first die holder and the second die holder, and the first die holder and the second die holder are fixed to each other through a fastener penetrating through the mounting hole in a buckling state.

Optionally, the heat setting die further comprises an adjusting gasket, and the first die holder and the second die holder clamp the adjusting gasket in a buckling state to adapt to the change of the pipe diameter of the metal pipe.

Optionally, the adjusting gasket is annular, and the adjusting gasket is sleeved on each fastener when the first die holder and the second die holder are in a buckled state. Based on above-mentioned scheme gram system, this application is through setting up the mould into the first die holder and the second die holder of upper and lower lock, and when the heat setting, inside metal tubular product arranged the mould in for it is better, efficient to finalize the design, and convenient operation.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a heat setting die according to an embodiment;

FIG. 2 is a schematic view of a second mold holder according to an embodiment of the invention;

FIG. 3 is a schematic diagram illustrating the cutting of the shaped metal tube according to one embodiment;

FIG. 4 is a close-up cross-sectional view of the receiving groove and the molding bar in use according to one embodiment of the present invention;

FIG. 5 is a close-up cross-sectional view of the receiving channel and the molding bar in another embodiment;

FIG. 6 is a close-up cross-sectional view of an alternate embodiment of a receiving tank;

description of the figure numbering:

1. a first die holder; 2. a second die holder; 3. a containing groove; 31. a trench wall; 32. the bottom of the tank; 33. a step; 4. layering; 41. a recessed region; 5. mounting holes; 6. adjusting the gasket; 7. a metal tube.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The inventor finds that the heat setting die only aims at the nickel titanium tube with a single type, the universality is limited, and in addition, the problems of insufficient productivity and the like are also exposed due to the design of a die cavity structure in the mass production process.

As shown in fig. 1-3, a heat setting mold for metal pipes is provided, which includes a first mold base 1 and a second mold base 2 that are fastened to each other, wherein the first mold base 1 is provided with a receiving groove 3 for receiving a metal pipe 7, at least a part of the receiving groove 3 extends along a path corresponding to a shape of a part made of the metal pipe 7, and a width of the receiving groove 3 has an overall tendency of narrowing from a notch to a groove bottom 32 on a cross section of the receiving groove 3;

the second die holder 2 is provided with a pressing strip 4 matched with the position of the accommodating groove 3, and the top surface of the pressing strip 4 is provided with a concave area 41 matched with the shape of the outer wall of the metal pipe 7.

The metal tube may be a nickel-titanium alloy, but is not limited thereto. In this embodiment, the heat setting mold comprises a first mold base 2 provided with a containing groove 3 and a second mold base 2 provided with a pressing strip 4, when the metal pipe 7 is subjected to heat setting, the metal pipe 7 is only required to be placed in the groove along the extending path of the containing groove 3, the second mold base 2 and the first mold base 1 are buckled and fixed, the pressing strip 4 is pressed on the metal pipe 7, the metal pipe 7 is pressed and fixed between the top surface of the pressing strip 4 and the groove wall 31 of the containing groove 3, and then the heat setting is performed, so that the metal pipe 7 is heated uniformly, and the setting effect is better. And after the metal pipe 7 is shaped, taking out the shaped metal pipe 7, and cutting according to the shape of the required part to obtain the part. The heat setting die has the advantages of high efficiency, convenient operation and the like.

In order to avoid the influence on the shaping effect caused by the movement of the metal pipe 7 in the die during heating and shaping, the top surface of the pressing strip 4 is provided with a part adaptive to the shape of the outer wall of the metal pipe 7, so that the top surface of the pressing strip 4 can be tightly attached to the outer wall of the metal pipe 7, and the stability is enhanced.

In one embodiment, the top surface of the bead 4 is provided with a concave area 41 adapted to the shape of the outer wall of the metal tube 7. The part of the metal tube 7 contacting with the bead 4 is tightly attached to the inner wall of the concave area 41.

In order to adapt to the sizing of various metal pipe diameter sizes, on the section of the accommodating groove 3, the width of the accommodating groove 3 has an integral trend of narrowing from the notch to the groove bottom 32.

Specifically, the width of the accommodating groove 3 is narrowed in a manner that the two side groove walls 31 gradually get closer from the notch to the groove bottom 32, or the two side groove walls 31 gradually get closer from the notch to the groove bottom 32 and are in a step shape.

As shown in fig. 4 to 6, the groove walls 31 on both sides of the accommodating groove 3 are tightened from the notch to the groove bottom 32, so that the notch can have a wider opening range for accommodating the metal pipe 7 with a larger pipe diameter. And the groove walls 31 narrowing towards the groove bottom 32 enable the two sides of the axial section of the metal pipe 7 with different pipe diameters to be clamped between the groove walls 31 at the two sides of the corresponding depth position of the accommodating groove 3 after the metal pipe is placed in the accommodating groove 3, thereby playing a role in limiting.

As shown in fig. 4, when the diameter of the metal pipe 7 is smaller, the outer peripheral wall of the cross section of the metal pipe 7 abuts against and is limited by the groove bottom 32 of the accommodating groove 3 and the groove walls 31 at two sides, and the whole metal pipe 7 is accommodated in the accommodating groove 3.

As shown in fig. 5, when the diameter of the metal pipe 7 is larger, the outer peripheral wall of the metal pipe 7 on the cross section abuts against two side walls of the accommodating groove 3, respectively, and is away from the groove bottom 32 of the accommodating groove 3, and a part of the metal pipe 7 protrudes out of the accommodating groove 3, at this time, two radial sides of the metal pipe 7 are clamped and limited by two mutually inclined side walls.

As shown in fig. 6, when the width of the accommodating groove 3 is narrowed, the two side groove walls 31 gradually get closer from the notch to the groove bottom 32 and are in a step shape, and the two side steps 33 are arc shapes adapted to the outer wall of the metal tube 7.

When the pipe diameter of the metal pipe 7 is small, the outer peripheral wall of the metal pipe 7 on the cross section abuts against the bottom 32 of the accommodating groove 3 and the two side groove walls 31 respectively, and the two side peripheral walls abut against the lower positions between the two side steps 33 respectively.

When the pipe diameter of the metal pipe 7 is small and large, the outer peripheral wall of the metal pipe 7 on the cross section towards the outer peripheral walls on two sides of the groove bottom 32 respectively abuts against the corresponding step 33, and the outer walls are attached to the step 33.

According to the final shape of the part and considering the utilization rate of the metal pipe 7, the accommodating groove 3 of the first die holder 1 is designed into a closed ring shape, the ring shape at least comprises two area sections, and the extending path of each area section corresponds to the shape of the part made of the metal pipe 7. Correspondingly, the pressing strip 4 on the second die holder 2 is also of a closed annular structure. Thus, when the metal tube 7 is set by the heat setting die, at least two parts are finally obtained.

In this embodiment, the shape of the component is L-shaped, the turning part is a rounded corner structure, and the ring shape includes four zone segments.

Specifically, the extension path of the component is formed by connecting one end of a straight line segment and one end of an arc segment, and the ring shape can be provided with four extension paths which respectively correspond to four region segments. Thus, after the heat setting process is carried out once and cutting is carried out, four parts can be obtained, and the working efficiency is improved.

In order to make full use of the metal pipe 7 and avoid causing unnecessary waste, the four area sections are sequentially connected end to form a ring.

The ring is a runway row and is provided with two parallel straight line sections and two arc sections which are respectively connected with the corresponding ends of the two straight line sections.

As shown in fig. 3, when the metal tube 7 is cut after being shaped, the metal tube can be cut along the center line direction of the two straight line segments, and then cut along the direction perpendicular to the center line through the middle point, so that four parts can be finally obtained. The four parts respectively correspond to four areas which form a ring, and residual waste materials cannot be generated after cutting.

As shown in fig. 1-2, the components may have different dimensional requirements, such as the length of the straight segments of the components, the radius of curvature of the arcuate segments, etc., depending on different requirements. The ring is designed into a plurality of internally and externally nested rings, and a plurality of internally and externally nested ring-shaped closed pressing strips 4 are also arranged at corresponding positions of the second die holder 2. Thus, the metal pipe 7 after heat setting according to different accommodating grooves 3 can be cut to obtain parts with different sizes. Before the heat setting, the selection can be carried out according to the requirement.

Because a plurality of accommodating grooves 3 are formed in the first die holder 1, a plurality of metal pipes 7 can be shaped at the same time, a plurality of parts with different sizes are obtained at the same time, and the working efficiency is improved.

In this embodiment, on the cross section of the pressing bar 4, the width of the pressing bar 4 narrows towards the direction away from the second die holder 2, and the overall narrowing trend matches with the overall narrowing trend of the width of the accommodating groove 3. Therefore, when the two die holders are buckled, the pressing strip 4 can extend into the accommodating groove 3, and the top surface of the pressing strip 4 is abutted against the outer wall of the metal pipe 7.

As shown in fig. 4, after the first die holder 1 and the second die holder 2 are fastened, the pressing strip 4 extends from the opening of the accommodating groove 3, the top surface of the pressing strip abuts against the outer circumferential wall of the metal pipe with the upward diameter, and two side walls of the pressing strip 4 are respectively adapted to the groove wall 31 of the accommodating groove 3 on the corresponding side. At this time, the buckling sides of the first die holder 1 and the second die holder 2 are in a mutually jointed state.

As shown in fig. 5, after the first die holder 1 and the second die holder 2 are fastened, the top surface of the pressing bar 4 abuts against the outer wall of the metal tube 7 protruding out of the accommodating groove 3. At this time, the buckling side of the first die holder 1 and the second die holder 2 is slightly separated.

In this embodiment, the mounting holes 5 corresponding to the positions of the first mold base 1 and the second mold base 2 are provided therebetween, and the first mold base 1 and the second mold base 2 are fixed to each other by fasteners penetrating through the mounting holes 5 in a fastened state, which is simple to operate.

In one embodiment, the fastener includes a threaded rod extending through the mounting holes 5 at corresponding positions of the first die holder 1 and the second die holder 2, and a nut cooperating with the threaded rod to clamp the first die holder 1 and the second die holder 2.

Further, when the metal pipe diameter is large, as shown in fig. 5. In order to ensure the stable state when the first die holder 1 and the second die holder 2 are buckled, the heat setting die further comprises an adjusting gasket 6, and the adjusting gasket 6 is clamped by the first die holder 1 and the second die holder 2 in the buckled state so as to adapt to the change of the pipe diameter of the metal pipe 7.

In order to better match metal pipes 7 with different pipe diameters, adjusting gaskets 6 with different thicknesses can be matched to adapt to the gap between the first die holder 1 and the second die holder 2 when the first die holder and the second die holder are buckled.

Specifically, the adjusting pad 6 may be made of an elastic material or a rigid material.

Further, the adjusting gasket 6 is annular, and the adjusting gasket 6 is sleeved on each fastener when the first die holder 1 and the second die holder 2 are in a buckled state.

When the fastener is a screw, the adjusting gasket 6 is sleeved on the screw and clamped between the two die holders.

In other embodiments, the set of receiving grooves 3 and the pressing strips 4 in the heat setting mold can be used as a mold unit, and a plurality of mold units can be disposed on the first mold base 1 and the second mold base 2 to improve the setting efficiency. And each group of mould units can comprise an annular accommodating groove 3 and a corresponding annular pressing strip 4, or comprise a plurality of accommodating grooves 3 which are nested inside and outside and a plurality of corresponding annular pressing strips 4.

Above-mentioned heat setting mould of metal tubular product 7 through setting up the mould to first die holder 1 and second die holder 2 of lock from top to bottom, when the heat setting, inside the mould was arranged in to metal tubular product 7 for it is better, efficient to finalize the design, and convenient operation. And the containing groove 3 and the pressing strip 4 are designed into a closed runway ring shape, so that a plurality of sections of parts which meet the required shapes can be directly cut out after the metal pipe 7 is shaped, and the waste of the pipe is avoided. A plurality of internally and externally nested containing grooves 3 are formed in the same die, so that the corresponding containing grooves 3 can be selected according to the specific requirements on the sizes of the components, and the components meeting various application scenes can be flexibly customized. An elastic adjusting gasket 6 can be arranged between the first die holder 1 and the second die holder 2 to adapt to different pipe diameter sizes of the metal pipe 7.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature through intervening media.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions 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 solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The heat setting die for the metal pipe comprises a first die holder and a second die holder which are mutually buckled, and is characterized in that the first die holder is provided with an accommodating groove for accommodating the metal pipe, at least one part of the accommodating groove has an extending path corresponding to the shape of a part made of the metal pipe, and the width of the accommodating groove has an integral trend of narrowing from a groove opening to a groove bottom on the cross section of the accommodating groove;

2. The heat-setting die of claim 1, wherein the width of the receiving groove is narrowed in a manner that the two side groove walls gradually get closer from the groove opening to the groove bottom, or the two side groove walls gradually get closer from the groove opening to the groove bottom and are stepped.

3. A heat-setting die as claimed in claim 1, wherein the receiving groove is a closed ring shape, the ring shape includes at least two zone segments, and the extending path of each zone segment corresponds to the shape of the part made of the metal tube.

4. A heat-setting die as claimed in claim 3, wherein the ring is a plurality of nested inside and outside rings.

5. The heat-setting die of claim 3, wherein the part is L-shaped and the inflection points are rounded, the ring shape including four zone segments.

6. A heat-setting die as claimed in claim 5, wherein the four segments are joined end to form the ring shape.

7. A heat-setting die as claimed in claim 1, wherein, in the cross section of the bead, the bead width narrows in a direction away from the second die holder, and the overall tendency of the narrowing matches the overall tendency of the width narrowing of the receiving groove.

8. The heat setting die of claim 1, wherein a corresponding mounting hole is formed between the first die holder and the second die holder, and the first die holder and the second die holder are fixed to each other by a fastener penetrating through the mounting hole in a fastened state.

9. The heat-setting die of claim 8, further comprising an adjusting gasket, wherein the first die holder and the second die holder clamp the adjusting gasket in a buckled state to adapt to the change of the pipe diameter of the metal pipe.

10. The heat setting die of claim 9, wherein the adjusting shim is ring-shaped, and the adjusting shim is sleeved on each fastener when the first die holder and the second die holder are in a fastened state.