CN214683542U - Moving core head for drawing and shaping copper pipe - Google Patents
Moving core head for drawing and shaping copper pipe Download PDFInfo
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- CN214683542U CN214683542U CN202120339946.6U CN202120339946U CN214683542U CN 214683542 U CN214683542 U CN 214683542U CN 202120339946 U CN202120339946 U CN 202120339946U CN 214683542 U CN214683542 U CN 214683542U
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Abstract
The utility model relates to a copper pipe draws technical field, specifically for copper pipe is drawn design and is used core head that moves about, including the core head body, the core head body includes the changeover portion, columniform path section and elliptic cylinder's big footpath section, changeover portion smooth connection is between path section and big footpath section, the path section, the axis coincidence of big footpath section and changeover portion, path section both sides arch is formed with the design ear, the path section is used for confirming fashioned shape of tubular product and internal diameter, big footpath section circumference is provided with the inclined plane, the high-end on inclined plane is located changeover portion section department, form the clearance that supplies tubular product to pass between the core hole inner wall of inclined plane and external mold. The core print body is prevented from moving back and forth by virtue of the structural characteristics of the core print body, and the core print body can be fixed at the core hole without using a core rod, so that continuous drawing can be realized, and the drawing efficiency of the pipe is improved.
Description
Technical Field
The utility model relates to a copper pipe draws technical field, specifically is copper pipe draws design with core head that moves about.
Background
In order to improve the heat exchange efficiency and accelerate the water outlet time of hot water, at present, the gas water heater is mostly provided with a special-shaped copper pipe with a double-lug structure to replace a common cylindrical copper pipe. At present, the double-lug special-shaped copper pipe is generally formed by drawing a cylindrical copper pipe blank.
The special-shaped copper pipe drawing die generally comprises an outer die and a core print, wherein in the prior art, the core print generally adopts a fixed core print, a core rod is inserted into the core print, the core print is fixed at a core hole of the outer die through the core rod, a copper pipe blank is sleeved outside the core print and is connected with a stretcher after penetrating through the core hole. During drawing, the outer diameter of the copper pipe is determined by the outer die, the inner diameter and the shape of the copper pipe are determined by the core print, and the wall thickness of the copper pipe is determined by the gap between the core print and the core hole, so that the drawing and shaping of the copper pipe are realized.
However, the core head is fixed by the core rod in the drawing mode, the length of the core rod is fixed, the core rod is limited by the length of the core rod, the copper pipe can be drawn only by one section, the copper pipe can not be drawn continuously by one single copper pipe, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is drawing the design with the core that moves about to provide the copper pipe to solve the current problem that mode efficiency is not high of drawing the copper pipe.
In order to achieve the above object, the utility model provides a following technical scheme:
copper pipe is drawn to finalize design with core head that moves about, including the core head body, the core head body includes the changeover portion, columniform path section and oval cylindricality's big footpath section, changeover portion smooth connection is between path section and big footpath section, the path section, the axis coincidence of big footpath section and changeover portion, path section both sides arch is formed with the design ear, the path section is used for confirming fashioned shape of tubular product and internal diameter, big footpath section circumference is provided with the inclined plane, the high-end on inclined plane is located changeover portion, form the clearance that supplies tubular product to pass between the core downthehole wall of inclined plane and external mold.
The principle and the beneficial effect of the scheme are as follows:
during drawing, the core print body is placed at the core hole, the small-diameter section faces the drawing direction, and the large-diameter section is provided with an inclined surface so as to form a gap with the core hole for a pipe to pass through; and connecting the pipe blank with a stretcher after the pipe blank passes through the core hole, so that the core head body is sleeved in the pipe blank. During drawing, the small-diameter section is used for determining the formed shape and the inner diameter of the pipe, and the core hole of the outer die is used for determining the outer diameter of the pipe, so that drawing is realized. When the core print body tends to move towards the drawing direction, the diameter of the formed pipe is smaller due to the existence of the large-diameter section and the transition section, so that the transition section and the large-diameter section can be clamped at the formed pipe and cannot move forwards continuously; and due to the effect of forward pushing of the drawing force on the core print body, the core print body cannot move backwards towards the large-diameter section, so that the core print body can be fixed at the core hole, and the drawing of the pipe is realized. In the scheme, the core print body is prevented from moving back and forth by virtue of the structural characteristic of the core print body, and the core print body can be fixed at the core hole without utilizing the core rod, so that continuous drawing can be realized, and the drawing efficiency of the pipe is improved.
Further, the design ear of path section one side is first design ear, and the design ear of path section opposite side is the second design ear, and the bellied height of first design ear is greater than the bellied height of second design ear, and first design ear and second design ear both sides are all sunken to form the slot, and the degree of depth of slot is the same, and the cross section of slot, first design ear and second design ear is the arc.
Has the advantages that: so set up the shaping tubular product that can be better.
Further, the grooves comprise a first groove and a second groove, the first groove is located on two sides of the first shaping lug, the second groove is located on two sides of the second shaping lug, the first groove extends to the large-diameter section, and the second groove extends to the transition section.
Has the advantages that: so set up the shaping tubular product that can be better.
Further, the inclined plane includes first inclined plane and second inclined plane, all is provided with the second inclined plane between two first grooves and between two second grooves, and the second inclined plane setting is in the major axis end department of major diameter section.
Has the advantages that: the arrangement enables the pipe to pass through the core hole more smoothly.
Further, the compression zone angle of the core print body is 22 °.
Has the advantages that: so set up the stability that prevents the core print body that can be better towards drawing the direction drunkenness, further improve the core print body.
Further, the radius of the groove is 3.15 mm, the radius of the first shaping lug is 2.2 mm, and the radius of the second shaping lug is 3 mm.
Has the advantages that: the required pipe can be formed more accurately by the arrangement.
Further, the radius of the small-diameter section is 18.4 mm.
Has the advantages that: the required pipe can be formed more accurately by the arrangement.
Further, the length of the small-diameter section is 12-12.5 mm, the length of the large-diameter section is 14-14.5 mm, and the length of the core print body is 32 mm.
Has the advantages that: so set up the stability that prevents core head body drunkenness that can be better, further improve the core head body.
Further, the distance between the first shaping lug and the second shaping lug is 23-23.7 mm.
Has the advantages that: the required pipe can be formed more accurately by the arrangement.
Further, the long axis of the large-diameter section is 25.5-26.5 mm, and the short axis of the large-diameter section is 19.5-20.5 mm.
Has the advantages that: so set up, under the prerequisite that guarantees tubular product can pass, can be better prevent the drunkenness of core head body, further improve the stability of core head body.
Drawings
Fig. 1 is an isometric view of a first embodiment of the present invention;
fig. 2 is an isometric view of another angle of an embodiment of the present invention;
FIG. 3 is an end schematic view of a small diameter section;
fig. 4 is a right side view of fig. 3.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a first inclined plane 1, a large-diameter section 2, a second inclined plane 3, a transition section 4, a small-diameter section 5, a first shaping lug 6, a first groove 7, a second shaping lug 8 and a second groove 9.
The embodiments are substantially as shown in figures 1, 2, 3 and 4:
copper pipe is drawn to finalize design and is used core head that moves about, including the core head body, the core head body includes changeover portion 4, columniform path section 5 and oval cylindricality's major diameter section 2, and 4 smooth connection of changeover portion are between minor diameter section 5 and major diameter section 2, and the axis coincidence of minor diameter section 5, major diameter section 2 and changeover portion 4.
The 5 right sides of path section are protruding to be formed with first design ear 6, and 5 left sides of path section are protruding to be formed with second design ear 8, and the bellied height of first design ear 6 is greater than the bellied height of second design ear 8. First design ear 6 and second design ear 8 homogeneous body shaping are on path section 5, and first design ear 6 and second design ear 8 all extend along the axial of path section 5, and the length of first design ear 6 and second design ear 8 all is the same with the length of path section 5. The two sides of the first shaping lug 6 are concavely provided with a first groove 7, the two sides of the second shaping lug 8 are concavely provided with a second groove 9, the first groove 7 and the second groove 9 both extend along the axis of the small-diameter section 5, the first groove 7 extends to the large-diameter section 2, and the second groove 9 extends to the transition section 4. The cross sections of the groove, the first shaping lug 6 and the second shaping lug 8 are all arc-shaped.
The large-diameter section 2 is circumferentially cut with an inclined plane, the high end of the inclined plane is positioned at the transition section 4, and a gap for the pipe to pass through is formed between the inclined plane and the inner wall of the core hole of the outer die. The inclined planes comprise two first inclined planes 1 and two second inclined planes 3, the two second inclined planes 3 are arranged at two ends of a short shaft of the large-diameter section 2, one second inclined plane 3 is arranged between the two first grooves 7, the other second inclined plane 3 is arranged between the two second grooves 9, and the two first inclined planes 1 are arranged at two ends of the long shaft of the large-diameter section 2.
As shown in fig. 4, the compression zone angle C of the core print body is 22 °, where the compression zone angle C is the angle between the two sides of the longitudinal cross-section of the transition section 4 taken along the minor axis of the major diameter section 2 as shown in fig. 4. In this embodiment, the radii of the first groove and the second groove are both 3.15 mm, the radius of the first shaping lug 6 is 2.2 mm, the radius of the second shaping lug 8 is 3 mm, and the radius of the small-diameter section 5 is 18.4 mm. The length E of the small-diameter section 5 is 12.189 mm, the length D of the large-diameter section 2 is 14.195 mm, the length B of the core print body is 32 mm, the distance a between the first shaping lug 6 and the second shaping lug 8 is 23.62 mm, the long axis of the large-diameter section 2 is 26.08 mm, and the short axis of the large-diameter section 2 is 20.78 mm.
The specific implementation process is as follows:
the core print body is placed at the core hole of the outer die, the pipe is sleeved outside the core print body and then penetrates out of the core hole to be connected with the stretcher, the small-diameter section 5 of the core print body faces the stretcher, and the stretcher is started to pull the pipe. In this embodiment, the outer die and the drawing machine used for drawing the copper tube in the prior art are adopted, and details are not described in this embodiment.
When drawing, the core print body is positioned inside the pipe, the clearance between the first inclined plane 1, the second inclined plane 3 and the inner wall of the core hole is used for the pipe to pass through, the outer diameter of the pipe is determined by the core hole, and the inner diameter and the shape of the pipe are determined by the small-diameter section 5. When the core print body is subjected to the drawing force of the drawing machine and tends to move forwards (towards the direction of the drawing machine), the core print body cannot move forwards (towards the direction of the drawing machine) in the pipe because the transition section 4 and the large-diameter section 2 exist, the pipe at the small-diameter section 5 is already formed, and the pipe at the small-diameter section 5 is smaller in diameter; the core print body is drawn by the drawing action of the drawing machine, so that the core print body cannot move backwards in the pipe, the core print body can move around in the core hole, the core print body is not required to be fixed by the core rod and is not limited by the core rod, and the continuous drawing of the copper pipe can be realized.
In the embodiment, the movable core print body is adopted to realize the drawing of the double-lug special-shaped pipe, the core print body moves at the core hole by utilizing the structure of the core print body, the core print body is not required to be fixed on the core hole by adopting the core rod and is not limited by the length of the core rod, the continuous stretching of the pipe can be realized, and the drawing efficiency of the pipe is greatly improved.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. Copper pipe is drawn to finalize design and is used core head that moves about, its characterized in that: including the core head body, the core head body includes the changeover portion, columniform path section and elliptic cylinder's big footpath section, changeover portion smooth connection is between path section and big footpath section, the path section, the axis coincidence of big footpath section and changeover portion, the protruding design ear that is formed with in path section both sides, the path section is used for confirming fashioned shape of tubular product and internal diameter, big footpath section circumference is provided with the inclined plane, the high-end on inclined plane is located changeover portion department, form the clearance that supplies tubular product to pass between the core downthehole wall of inclined plane and external mold.
2. The moving core print for drawing and shaping the copper pipe according to claim 1, wherein: the design ear of path section one side is first design ear, and the design ear of path section opposite side is the second design ear, and the bellied height of first design ear is greater than the bellied height of second design ear, and first design ear and second design ear both sides are all sunken to form the slot, and the degree of depth of slot is the same, and the cross section of slot, first design ear and second design ear is the arc.
3. The moving core print for drawing and shaping the copper pipe according to claim 2, wherein: the grooves comprise a first groove and a second groove, the first groove is positioned on two sides of the first shaping lug, the second groove is positioned on two sides of the second shaping lug, the first groove extends to the large-diameter section, and the second groove extends to the transition section.
4. The moving core print for drawing and shaping the copper pipe according to claim 3, wherein: the inclined plane includes first inclined plane and second inclined plane, all is provided with the second inclined plane between two first grooves and between two second grooves, and the second inclined plane sets up the major axis end department at the major diameter section.
5. The moving core print for drawing and shaping the copper pipe according to claim 1, wherein: the compressed zone angle of the core print body was 22 °.
6. The moving core print for drawing and shaping the copper pipe according to claim 2, wherein: the radius of the groove is 3.15 mm, the radius of the first shaping lug is 2.2 mm, and the radius of the second shaping lug is 3 mm.
7. The moving core print for drawing and shaping the copper pipe according to claim 6, wherein: the radius of the small-diameter section is 18.4 mm.
8. The moving core print for drawing and shaping a copper pipe according to claim 7, wherein: the length of the small diameter section is 12-12.5 mm, the length of the large diameter section is 14-14.5 mm, and the length of the core print body is 32 mm.
9. The moving core print for drawing and shaping the copper pipe according to claim 8, wherein: the distance between the first shaping lug and the second shaping lug is 23-23.7 mm.
10. The moving core print for drawing and shaping a copper pipe according to claim 9, wherein: the long axis of the large-diameter section is 25.5-26.5 mm, and the short axis of the large-diameter section is 19.5-20.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120339946.6U CN214683542U (en) | 2021-02-06 | 2021-02-06 | Moving core head for drawing and shaping copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120339946.6U CN214683542U (en) | 2021-02-06 | 2021-02-06 | Moving core head for drawing and shaping copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214683542U true CN214683542U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120339946.6U Active CN214683542U (en) | 2021-02-06 | 2021-02-06 | Moving core head for drawing and shaping copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214683542U (en) |
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2021
- 2021-02-06 CN CN202120339946.6U patent/CN214683542U/en active Active
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