CN114798941A - Traction device and processing equipment - Google Patents

Traction device and processing equipment Download PDF

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Publication number
CN114798941A
CN114798941A CN202210321579.6A CN202210321579A CN114798941A CN 114798941 A CN114798941 A CN 114798941A CN 202210321579 A CN202210321579 A CN 202210321579A CN 114798941 A CN114798941 A CN 114798941A
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China
Prior art keywords
pipe
diameter
positioning
rotating part
wire
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Granted
Application number
CN202210321579.6A
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Chinese (zh)
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CN114798941B (en
Inventor
郭海杰
刘亮
曹洪涛
代雨成
高云峰
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Han s Laser Technology Industry Group Co Ltd
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Han s Laser Technology Industry Group Co Ltd
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Priority to CN202210321579.6A priority Critical patent/CN114798941B/en
Publication of CN114798941A publication Critical patent/CN114798941A/en
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Publication of CN114798941B publication Critical patent/CN114798941B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

This application is applicable to and pulls technical field, provides a draw gear and processing equipment, draw gear includes: the first rotating part is provided with a first positioning curved surface; the second rotating part is provided with a second positioning curved surface and is arranged in parallel with the first rotating part, so that a rotating shaft of the first rotating part is parallel to a rotating shaft of the second rotating part; a clamping space is formed between the first rotating part and the second rotating part, and the first positioning curved surface and the second positioning curved surface are wall surfaces in the height direction of the clamping space; the width of the clamping space is greater than the height. The embodiment of the application provides a draw gear can prevent that the surface of tubular product or wire from producing the mar.

Description

Traction device and processing equipment
Technical Field
The application belongs to the technical field of traction, and more particularly relates to a traction device and processing equipment.
Background
When the medical apparatus micro-tube for cardiovascular and cerebrovascular interventional therapy is processed and manufactured, micro-holes are required to be processed on the periphery of the surface of the thin-wall hollow tube wire to be used as a channel for injecting medicine into a human body from the outside. During processing, the pipe needs to be pulled and fed. The prior traction device is easy to cause the surface of the pipe to generate scratches when the pipe is pulled.
Disclosure of Invention
The embodiment of the application provides a draw gear and processing equipment, can prevent that the surface of tubular product or wire rod from producing the mar.
In a first aspect, embodiments of the present application provide a traction device, including:
the first rotating part is provided with a first positioning curved surface;
the second rotating part is provided with a second positioning curved surface and is arranged in parallel with the first rotating part, so that a rotating shaft of the first rotating part is parallel to a rotating shaft of the second rotating part;
a clamping space is formed between the first rotating part and the second rotating part, and the first positioning curved surface and the second positioning curved surface are wall surfaces in the height direction of the clamping space;
the width of the clamping space is greater than the height.
In some possible embodiments of the first aspect, the holding space is provided with receiving slits on both sides.
In some possible embodiments of the first aspect, the distance D of the receiving gap gap Satisfies the following conditions: d is not less than 4h gap ≤0.5D；
h is the wall thickness of the pipe; d is the diameter of the pipe.
In some possible embodiments of the first aspect, the first rotating member is further provided with a first transition surface, and the first transition surface is connected to the first positioning curved surface and the wall surface of the accommodating gap;
the second rotating part is further provided with a second transition surface, and the second transition surface is connected to the second positioning curved surface and the wall surface of the accommodating gap.
In some possible embodiments of the first aspect, the first transition surface is a curved surface and the second transition surface is a curved surface; the radius of the first transition surface is equal to the radius of the second transition surface, and is the radius r.
In some possible embodiments of the first aspect, the radius r satisfies: r is more than 2h and less than 0.25D;
h is the wall thickness of the pipe; d is the diameter of the pipe.
In some possible embodiments of the first aspect, the first positioning curved surface has a cross section of a first circular arc, and the second positioning curved surface has a cross section of a second circular arc.
In some possible embodiments of the first aspect, the diameter of the first circular arc is equal to the diameter of the second circular arc, and is the diameter d s ；
Diameter d s Satisfies the following conditions: D-D is more than 0.2h s ＜h，d s /D＜δ；
h is the wall thickness of the pipe; d is the diameter of the pipe; delta is the ultimate elastic deformation of the pipe.
In some possible embodiments of the first aspect, the diameter of the first rotating member is equal to the diameter of the second rotating member, and is diameter D r ；
Diameter D r Satisfies the following conditions: d r ≥R p ；
R p Is the minimum bend radius of the tubing.
In some possible embodiments of the first aspect, the number of the first rotating members and the number of the second rotating members are plural, and all of the first rotating members and all of the second rotating members are used to draw the same tube or wire together.
In a second aspect, embodiments of the present application provide a processing apparatus including any one of the traction devices described above.
Compared with the prior art, the embodiment of the application has the beneficial effects that:
the contact between the first positioning curved surface and the surface of the pipe or the wire is surface contact, the contact between the second positioning curved surface and the surface of the pipe or the wire is surface contact, the width of the clamping space is larger than the height, so that the pipe or the wire with a circular cross section is elastically deformed, the first positioning curved surface and the second positioning curved surface in the height direction of the clamping space apply pressure to the pipe or the wire, the first rotating part and the second rotating part rotate to convert the pressure applied to the pipe or the wire by the clamping space into traction force to the pipe or the wire, the first positioning curved surface and the second positioning curved surface position the pipe or the wire, the pipe or the wire is pulled in a fixed direction, and scratches on the surface of the pipe or the wire can be prevented.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a perspective view of a traction device according to an embodiment of the present application in a use state;
FIG. 2 is a front view of a traction device provided in accordance with an embodiment of the present application;
FIG. 3 is an enlarged view of area A of FIG. 2;
FIG. 4 illustrates a bent state of a pipe or wire according to an embodiment of the present disclosure;
FIG. 5 is a cross-sectional deformation of a tubing provided in accordance with an embodiment of the present application as it passes through a pulling device;
fig. 6 is a perspective view of a use state of a traction device according to another embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to fig. 1 to 6 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
It should be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The embodiment of the application provides a traction device which can be used for traction of pipes or wires; the traction device provided by the embodiment of the application is particularly suitable for traction of pipes or wires with tiny diameters, such as pipes or wires with diameters ranging from 1mm to 5 mm. The aforementioned pipe may be a non-metal pipe or a metal pipe. The aforementioned wire rod may be a non-metal wire rod and a metal wire rod.
Fig. 1 is a perspective view illustrating a use state of a traction device according to an embodiment of the present application. Fig. 2 is a front view of a traction device provided in accordance with an embodiment of the present application. Referring to fig. 1 and 2, an embodiment of the present application provides a traction device including a first rotating member 1 and a second rotating member 2.
The first rotating member 1 may be a roller or a drum.
Fig. 3 is an enlarged view of the area a in fig. 2. Referring to fig. 3, the first rotating member 1 is provided with a first positioning curved surface 11. The first positioning curved surface 11 is used for abutting against the surface of the pipe or the wire 3 to position the pipe or the wire 3.
The second rotating member 2 may be a roller or a drum.
Referring to fig. 3, the second rotating member 2 is provided with a second positioning curved surface 21. The second positioning curved surface 21 is used for abutting against the surface of the pipe or the wire 3 to position the pipe or the wire 3.
It should be understood that the first and second positioning curved surfaces 11 and 21 position the pipe or the wire at different positions.
The first rotating member 1 can be used as a driving rotating member, and the second rotating member 2 can be used as a driven rotating member. Of course, the first rotating member 1 may also be a driven rotating member, and the second rotating member 2 may be a driving rotating member.
Referring to fig. 3, a positioning space 110 is formed between the first positioning curved surface 11 and the second positioning curved surface 21. The positioning space 110 is used for positioning the workpiece.
Referring to fig. 2, the second rotating member 2 is disposed in parallel with the first rotating member 1 such that the rotation axis a1 of the first rotating member 1 is parallel with the rotation axis a2 of the second rotating member 2.
Referring to fig. 2 and 3, a clamping space 100 is formed between the first rotating member 1 and the second rotating member 2, and the first positioning curved surface 11 and the second positioning curved surface 21 are wall surfaces of the clamping space 100.
Referring to fig. 2 and 3, the clamping space 100 includes the aforementioned positioning space 110. The clamping space 100 is used for positioning and clamping the tube or wire 3.
Referring to fig. 2 and 3, the clamping space 100 has a width greater than a height. The first positioning curved surface 11 and the second positioning curved surface 21 are two wall surfaces in the height direction H of the holding space 100, and the height between the first positioning curved surface 11 and the second positioning curved surface 21 is the height of the holding space 100.
In practical operation, the first rotating part 1 or the second rotating part 2 can be moved by the moving mechanism, so that the distance between the first rotating part 1 and the second rotating part 2 is increased, and the pipe or the wire 3 can pass through the space between the first rotating part 1 and the second rotating part 2; then, the first rotating part 1 or the second rotating part 2 is moved through the moving mechanism, so that the distance between the first rotating part 1 and the second rotating part 2 is reduced, and the pipe or the wire 3 is positioned in the clamping space 100; wherein the surface of the pipe or wire 3 is in contact with the wall surface of the clamping space 100.
According to the above, the contact between the first curved positioning surface 11 and the surface of the pipe or wire 3 is surface contact, the contact between the second curved positioning surface 21 and the surface of the pipe or wire 3 is also surface contact, the width of the clamping space 100 is larger than the height, so that the pipe or wire 3 with a circular cross section is elastically deformed, the first curved positioning surface 11 and the second curved positioning surface 21 in the height direction of the clamping space 100 apply pressure to the pipe or wire 3, the first rotating member 1 and the second rotating member 2 rotate to convert the pressure applied to the pipe or wire 3 by the clamping space 100 into traction force to the pipe or wire 3, the first curved positioning surface 11 and the second curved positioning surface 21 position the pipe or wire 3, so as to realize traction of the pipe or wire 3 in a fixed direction, prevent the surface of the pipe or wire 3 from generating scratches, and realize traceless traction of the pipe or wire 3, so that the surface finish of the pipe or wire 3 can be maintained.
In some embodiments, the surface roughness of the wall of the clamping space 100 is higher than the surface roughness of the pipe or wire, which can prevent the wall of the clamping space 100 from scratching the surface of the pipe or wire to some extent.
Referring to fig. 3, in some embodiments, the clamping space 100 is provided with receiving slits 120 at both sides thereof.
The receiving slit 120 extends in the width direction W of the clamping space 100 such that the width of the clamping space 100 is greater than the height.
The receiving slit 120 is used to receive a deformed portion of the tube or wire.
The first positioning curved surface 11 and the second positioning curved surface 21 in the height direction H of the clamping space 100 apply pressure to the pipe or wire 3, the pipe or wire 3 is compressed in the height direction H, and expands (i.e., both sides are squeezed and deformed) in the width direction W; the deformed portions of both sides of the tube or wire 3 are pressed to move to the receiving slits 120.
Referring to fig. 3, the receiving gap 120 has a distance D gap 。
It should be understood that the distance D gap To accommodate the distance between the two walls of the gap 120 in the height direction H.
For pipes, distance D gap Satisfies the following conditions: d is not less than 4h gap ≤0.5D。
h is the wall thickness of the pipe, and D is the outer diameter of the pipe.
If the aforementioned distance D is present gap If the size of the tube is too large, more parts or even the whole tube may move to the accommodating gap 120 when the tube is compressed, and the tube cannot be pulled or damaged; distance D gap Less than or equal to 0.5D (i.e. half of the outer diameter of the pipe) is an ideal value, so that the traction force is stable. When the tube having a wall thickness of h is fully compressed, its height is 2h or more, but there is actually a curved fillet, and therefore the aforementioned distance D gap It will be greater than or equal to 4 h.
Referring to fig. 3, in some embodiments, the first rotating member 1 is further provided with a first transition surface 12, and the first transition surface 12 is connected to the first positioning curved surface 11.
The first transition surface 12 is further connected to the wall surface of the accommodating gap 120, so that the first positioning curved surface 12 is connected to the wall surface of the accommodating gap 120, and the pipe or the wire is prevented from being damaged by the corners of the first positioning curved surface 12 and the accommodating gap 120.
The second rotating member 2 is further provided with a second transition surface 22, and the second transition surface 22 is connected to the second positioning curved surface 21.
The second transition surface 22 is further connected to the wall surface of the accommodating gap 120, so that the second positioning curved surface 21 is connected to the wall surface of the accommodating gap 120, and the pipe or the wire is prevented from being damaged by the corners of the second positioning curved surface 21 and the accommodating gap 120.
Referring to fig. 3, in some embodiments, the first transition surface 12 is curved and the second transition surface 22 is curved.
The radius of the first transition surface 12 is equal to the radius of the second transition surface 22, which is the radius r.
The first transition surface 12 and the second transition surface 22 are curved surfaces, and can be sufficiently attached to the surface of a pipe or a wire with a circular cross section.
In some embodiments, for a pipe, the radius r satisfies: r is more than 2h and less than 0.25D.
h is the wall thickness of the pipe, and D is the outer diameter of the pipe.
If the radius r is too large, the first positioning curved surface 12 and the second positioning curved surface 21 are smaller, so that the contact surfaces of the first positioning curved surface 12 and the second positioning curved surface 21 and the pipe are smaller, and the pipe is easily damaged in the traction process. If the radius r is too small, the first transition surface 12 and the second transition surface 22 are smaller, and the resistance encountered when the pipe expands to both sides in the width direction W is larger, which may cause the first transition surface 12 and the second transition surface 22 to exert a larger pressure on the pipe, thereby damaging the pipe.
R is more than 2h and less than 0.25D, so that the first transition surface 12 and the second transition surface 22 are relatively large, and the resistance encountered when the pipe expands towards two sides along the width direction W is relatively small; the contact surfaces of the first positioning curved surface 12 and the second positioning curved surface 21 with the pipe are also ensured to be larger, and the pipe is protected in the traction process.
Referring to fig. 3, in some embodiments, the first curved positioning surface 11 has a first circular arc in cross section, and the second curved positioning surface 21 has a second circular arc in cross section, so that the first curved positioning surface 11 and the second curved positioning surface 21 can contact with the surface of the pipe or wire with a circular cross section more sufficiently, and can better coat the pipe or wire during drawing the pipe or wire, and can better prevent the surface of the pipe or wire from being damaged.
Referring to FIG. 3, in some embodiments, the diameter of the first arc is equal to the diameter of the second arc, which is diameter d s 。
Diameter d s Satisfies the following conditions: D-D is more than 0.2h s ＜h，d s /D＜δ。
h is the wall thickness of the pipe, D is the outer diameter of the pipe or the wire, and delta is the limit elastic deformation of the pipe or the wire.
D-d s And represents the deformation amount of the pipe when the first positioning curved surface 11 and the second positioning curved surface 21 apply pressure to the pipe.
If the amount of deformation D-D s If the size of the first positioning curved surface 11 and the second positioning curved surface 21 is too small, the pressure applied to the pipe by the first positioning curved surface and the second positioning curved surface is relatively small, so that the traction force is relatively small, and the pipe cannot be pulled; if the amount of deformation D-D s If the size of the first positioning curved surface 11 and the second positioning curved surface 21 is too large, the pressure applied to the pipe by the first positioning curved surface and the second positioning curved surface is large, and the pipe may be damaged. Thus, the amount of deformation D-D s It needs to be controlled within a reasonable range. D-D is more than 0.2h s The length of the pipe can be less than h, so that the pipe can be pulled and prevented from being damaged.
In order to ensure that the first positioning curved surface 11 and the second positioning curved surface 21 can apply pressure to the pipe or the wire, the diameter of the first arc and the diameter of the second arc (i.e. the diameter d) s ) Less than the outer diameter D of the pipe or wire is required.
When the pipe or the wire is extruded by the first positioning curved surface 11 and the second positioning curved surface 21, the diameter of the first arc and the diameter of the second arc determine the deformation amount of the pipe or the wire when the pipe or the wire is extruded. d is a radical of s The delta/D is more than delta, so that the deformation of the pipe or the wire does not exceed the elastic limit of the pipe or the wire when the pipe or the wire is extruded, the deformation of the pipe or the wire is ensured to be elastic deformation, and the pipe or the wire can be prevented from generating plastic deformation (namely, deformation which can not be recovered by self) and even breaking.
In some embodiments, the diameter of the first rotating member 1 is equal to the diameter of the second rotating member 2, which is diameter D r 。
For pipes or wires, diameter D r Satisfies the following conditions: d r ≥R p 。
Fig. 4 is a bending state of a pipe or a wire according to an embodiment of the present application. Referring to FIG. 4, R p The minimum bend radius of a pipe or wire.
The diameter of the first rotating part 1 and the diameter of the second rotating part 2 are larger than or equal to the minimum bending radius of the pipe or the wire, so that the bending radius of the pipe or the wire in the process of drawing the pipe or the wire can be prevented from being smaller than the minimum bending radius, and the pipe or the wire can be prevented from being damaged.
FIG. 5 is a cross-sectional deformation of a tubing as it passes through a pulling device as provided by one embodiment of the present application. Under the constraint of the traction device provided by the embodiment of the application, the cross section of the pipe passing through the clamping space 100 is deformed as shown in fig. 5, and after the pipe passes through the clamping space 100, the cross section of the pipe can be restored to be circular under the action of self elasticity.
Fig. 6 is a perspective view of a use state of a traction device according to another embodiment of the present application. Referring to fig. 6, in some embodiments, the number of the first rotating member 1 and the second rotating member 2 is plural, and the plural first rotating members 1 and the plural second rotating members 2 draw the same tube or wire together.
The rotation axes a1 of the first rotation members 1 are perpendicular to each other, and the rotation axes a2 of the second rotation members 2 are also perpendicular to each other, so that the first rotation members 1 and the second rotation members 2 are arranged in series and crosswise in the traveling direction S of the tube or wire, which can generate a larger traction force to the tube or wire 3. The total traction force of the traction device provided by the embodiment of the application on the pipe or the wire 3 is gradually increased along with the number of the first rotating part 1 and the second rotating part 2.
According to the above, the traction device provided by the embodiment of the application has a simple structure, can continuously traction and feed the pipe or the wire, can realize automatic feeding, can provide large and stable traction force for the pipe or the wire with high surface finish degree, can prevent the pipe or the wire from being scratched and damaged in the traction process, can maintain the surface finish degree of the pipe or the wire, can prevent the pipe diameter from generating obvious tactile deformation, and is particularly suitable for the pipe which is thin in wall, soft in material, low in surface hardness, easy to deform and difficult to recover after being subjected to external force.
Embodiments of the present application further provide a processing apparatus, which includes the traction device provided in any of the above embodiments. The aforementioned processing device may be a laser marking device or a laser welding device.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (11)

1. A traction device, comprising:
the first rotating part is provided with a first positioning curved surface;
the second rotating part is provided with a second positioning curved surface and is arranged in parallel with the first rotating part, so that a rotating shaft of the first rotating part is parallel to a rotating shaft of the second rotating part;
a clamping space is formed between the first rotating part and the second rotating part, and the first positioning curved surface and the second positioning curved surface are wall surfaces in the height direction of the clamping space;
the width of the clamping space is greater than the height.
2. The draft gear according to claim 1, wherein said holding space is provided with receiving slits at both sides thereof.
3. Traction device according to claim 2, characterised in that said receiving gap has a distance D gap Satisfies the following conditions: d is not less than 4h gap ≤0.5D；
h is the wall thickness of the pipe; d is the diameter of the pipe.
4. The draft gear according to claim 2, wherein said first rotating member is further provided with a first transition surface connected to said first curved positioning surface and to a wall surface of said receiving slot;
the second rotating part is further provided with a second transition surface, and the second transition surface is connected to the second positioning curved surface and the wall surface of the accommodating gap.
5. The traction apparatus as defined in claim 4, wherein said first transition surface is curved and said second transition surface is curved; the radius of the first transition surface is equal to the radius of the second transition surface, and is the radius r.
6. The towing attachment in accordance with claim 5, wherein the radius r satisfies: r is more than 2h and less than 0.25D;
h is the wall thickness of the pipe; d is the diameter of the pipe.
7. The draft gear according to claim 1, wherein said first curved positioning surface has a first circular arc in cross section and said second curved positioning surface has a second circular arc in cross section.
8. Traction device according to claim 7, characterised in that the diameter of said first arc of circle is equal to the diameter of said second arc of circle, with diameter d s ；
Diameter d s Satisfies the following conditions: D-D is more than 0.2h s ＜h，d s /D＜δ；
h is the wall thickness of the pipe; d is the diameter of the pipe; delta is the ultimate elastic deformation of the pipe.
9. A towing attachment in accordance with claim 1, wherein the diameter of the first rotatable member is equal to the diameter of the second rotatable member by a diameter D r ；
Diameter D r Satisfies the following conditions: d r ≥R p ；
R p Is the minimum bend radius of the tubing.
10. The traction apparatus as claimed in any one of claims 1 to 9, wherein the number of said first rotating members and the number of said second rotating members are plural, all of said first rotating members and all of said second rotating members being used to jointly draw the same tube or wire.
11. A processing plant, characterized in that it comprises a drawing device according to any one of claims 1 to 10.
CN202210321579.6A 2022-03-30 2022-03-30 Traction device and processing equipment Active CN114798941B (en)

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CN202210321579.6A CN114798941B (en) 2022-03-30 2022-03-30 Traction device and processing equipment

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CN114798941B CN114798941B (en) 2023-10-03

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CN107716659A (en) * 2017-11-07 2018-02-23 太原科技大学 A kind of double assisted thin-wall pipe deep camber centreless bending dies and its manufacturing process
CN109500318A (en) * 2019-01-07 2019-03-22 青岛美磁新能源电子有限公司 A kind of line sending structure and its application
EP3892396A1 (en) * 2020-04-08 2021-10-13 Sacma Limbiate S.p.A. Wire drawing equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN107716659A (en) * 2017-11-07 2018-02-23 太原科技大学 A kind of double assisted thin-wall pipe deep camber centreless bending dies and its manufacturing process
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