CN213162582U - Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system - Google Patents

Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system Download PDF

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Publication number
CN213162582U
CN213162582U CN202021103489.2U CN202021103489U CN213162582U CN 213162582 U CN213162582 U CN 213162582U CN 202021103489 U CN202021103489 U CN 202021103489U CN 213162582 U CN213162582 U CN 213162582U
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China
Prior art keywords
compact
joint ball
spherical sleeve
core rod
exhaust system
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CN202021103489.2U
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Chinese (zh)
Inventor
陈有群
陆灿海
臧继龙
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Wuxi Weifu Lida Catalytic Converter Co Ltd
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Wuxi Weifu Lida Catalytic Converter Co Ltd
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Abstract

The utility model discloses a compact plug for a thin-wall pipe fitting elbow of an automobile exhaust system, which relates to the technical field of the forming and processing of the pipe fitting of the automobile exhaust system, in particular to a compact plug for a thin-wall pipe fitting elbow of an automobile exhaust system, comprising a compact spherical surface sleeve I, a compact spherical surface sleeve II, a compact spherical surface sleeve III, a compact joint ball end section, a compact joint ball middle section, a compact joint ball head section and a plug; the left side of the core rod is sequentially connected with a compact spherical sleeve I, a compact spherical sleeve II and a compact spherical sleeve III, and the compact spherical sleeves and the core rod are connected through compact joint balls; after connection, each joint ball can be bent and rotated to a set radian within a set angle range, and meanwhile, the clearance between the compact spherical sleeves is compact, so that cracking and wrinkling are avoided when the thin-wall pipe fitting is bent, the stability of the machined size is good, the qualification rate is improved, and the device has the characteristics of simple structure, safety, reliability and flexible and convenient operation.

Description

Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system
Technical Field
The utility model relates to an automobile exhaust system pipe fitting contour machining technical field, concretely relates to compact plug for automobile exhaust system thin-walled tube spare elbow.
Background
In recent years, with rapid development of the automobile industry, more and more automobile models are developed by various host factories, the structure of an automobile exhaust system is also changed, and thin-wall pipes with the wall thickness of 1.0mm and 1.2mm are applied more and more widely in products, so that the processing difficulty and rejection rate of the pipes are higher and higher; at present, the following two methods are mainly adopted for processing the pipe fittings:
1. by adopting the common core rod, the gap between the spherical sleeves is large, so that the thin-wall pipe fittings with the wall thickness of 1.0mm and 1.2mm are easy to crack, wrinkle and other defects in the production and processing process of the bent pipe, the rejection rate is extremely high, and the production requirement cannot be met.
2. The steel cable type core rod is expensive, 8-10 times of the price of a common core rod, high in production cost and free of market competitive advantages.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automobile exhaust system thin-walled tube spare compact plug for elbow, this plug have carried out configuration optimization design to spherical cover and joint ball, under the prerequisite that satisfies return bend camber and return bend angle, furthest has reduced the clearance between the spherical cover, and processing dimensional stability is good, and the disability rate is low, has satisfied thin-walled tube spare's pipe bending requirement, has simple structure simultaneously, and is with low costs, safe and reliable, the flexible operation is convenient characteristics.
According to the utility model provides a technical scheme, compact core stick for automobile exhaust system thin-walled tube spare elbow includes: the compact spherical joint comprises a compact spherical surface sleeve I, a compact spherical surface sleeve II, a compact spherical surface sleeve III, a compact joint ball end section, a compact joint ball middle section, a compact joint ball head section and a core rod; the left end of the core rod is sequentially connected with the first compact spherical sleeve, the second compact spherical sleeve and the third compact spherical sleeve from left to right, the first compact spherical sleeve is connected with the second compact spherical sleeve through the last compact joint ball joint, the second compact spherical sleeve is connected with the third compact spherical sleeve and the third compact spherical sleeve is connected with the first compact joint ball joint through the middle compact joint ball joint, and the first compact joint ball joint is fixedly connected with the core rod through bolts.
A middle hole is formed in the centers of the compact spherical sleeve I, the compact spherical sleeve II and the compact spherical sleeve III, the left end of the middle hole is in a bell mouth shape, and a limiting step is arranged at the bottom of the bell mouth; the right side end of the first compact spherical sleeve and the right side end of the second compact spherical sleeve are provided with a bell-mouth-shaped first concave surface, and the bell-mouth outer edge of the first concave surface is close to the outermost side arc-shaped molded line to form an acute angle; three right side ends of compact sphere cover are equipped with horn mouth form second concave surface, second concave surface horn mouth angle is less than first concave surface horn mouth angle.
The compact joint ball end section is arranged in the middle hole of the compact spherical surface sleeve I and is fixed by a clamp spring through a shaft; the compact joint ball tail section right side link is convex joint ball, convex joint ball top is equipped with the axial hole, downthehole spring, steel ball of installing in proper order from inside to outside.
The compact joint ball middle section is respectively arranged in the middle hole of the compact spherical sleeve II and the compact spherical sleeve III and is fixed by the snap spring through the shaft.
The compact joint ball middle section is characterized in that the first side connecting end is a convex joint ball, the second side connecting end is a concave joint ball, the sizes of the concave joint ball and the convex joint ball are matched, the top of the convex joint ball is provided with the hole axial hole, and the spring and the steel ball are sequentially arranged in the hole from inside to outside; and a positioning hole is formed in the center of the convex joint ball in the vertical direction, and the positioning pin is inserted into the positioning hole.
The gap between the compact spherical sleeve I, the compact spherical sleeve II and the compact spherical sleeve III can meet the technical requirements, and the number of the compact spherical sleeve II can be properly increased or decreased according to the curvature and the angle of the bent pipe.
The outer diameters of the compact spherical sleeve I, the compact spherical sleeve II, the compact spherical sleeve III and the core rod are customized according to the inner diameter of the pipe fitting.
The compact joint ball head section is embedded in one side of the core rod, and the bolt penetrates through a central hole of the core rod and is in threaded connection with the compact joint ball head section; and a concave joint ball is arranged on one side of the compact joint ball head section.
The compact joint ball end section, the compact joint ball middle section and the compact joint ball head section are connected end to end through the convex joint ball and the concave joint ball, and the connection can be bent and rotated to a set radian within a set angle range.
The utility model has the beneficial technical effects that:
the utility model discloses compact plug for automobile exhaust system thin-walled tube spare elbow is satisfying under the prerequisite of return bend camber and return bend angle, and furthest has shortened the clearance between the sphere cover, and processing dimensional stability is good, and the disability rate is low, has satisfied thin-walled tube spare's pipe bending requirement, has simple structure simultaneously, and is with low costs, safe and reliable, the flexible operation convenient characteristics.
Drawings
Fig. 1 is a schematic structural diagram of a compact mandrel for a thin-walled pipe elbow of an automobile exhaust system disclosed in the application.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
Combine fig. 1 to show, the utility model discloses compact plug for thin-walled tube spare elbow of automobile exhaust system of this application includes: the compact spherical joint comprises a compact spherical surface sleeve I1, a compact spherical surface sleeve II 2, a compact spherical surface sleeve III 3, a compact joint ball end section 9, a compact joint ball middle section 12, a compact joint ball head section 15 and a core rod 16; the left end of the core rod 16 is sequentially connected with a compact spherical sleeve I1, a compact spherical sleeve II 2 and a compact spherical sleeve III 3 from left to right, the number of the compact spherical sleeves II 2 can be properly increased or decreased according to the needs of the curvature and the angle of the bent pipe, and the gap between the compact spherical sleeves is minimized as much as possible under the condition of meeting the requirements of the curvature and the angle of the bent pipe; the compact spherical sleeve I1 is connected with the compact spherical sleeve II 2 through a compact joint ball end section 9, the compact spherical sleeve II 2 is connected with the compact spherical sleeve III 3 through a compact joint ball middle section 12, and the compact joint ball head section 15 is fixedly connected with the core rod 16 through a bolt 17, wherein the compact spherical sleeve III 3 is connected with the compact joint ball head section 15 through a compact joint ball middle section 12.
A middle hole 7 is formed in the centers of the compact spherical sleeve I1, the compact spherical sleeve II 2 and the compact spherical sleeve III 3, the left end of the middle hole 7 is in a bell mouth shape, and a limiting step 8 is arranged at the bottom of the bell mouth and used for positioning the compact joint ball; the right side ends of the compact spherical sleeve I1 and the compact spherical sleeve II 2 are provided with a bell-mouth-shaped first concave surface 10, and the bell-mouth outer edge of the first concave surface 10 is close to the outermost side arc-shaped molded line to form an acute angle, so that the bending range of the spherical sleeve is favorably increased; the right side end of the compact spherical sleeve III 3 is provided with a bell-mouth-shaped second concave surface 14, and the bell-mouth angle of the second concave surface 14 is smaller than that of the first concave surface 10.
The compact joint ball end section 9 is arranged in the middle hole 7 of the compact spherical sleeve I1 and is positioned by a clamp spring 19 through a shaft; the compact joint ball end section 9 right side link is convex joint ball, and convex joint ball top is equipped with axial hole 11, installs spring 4, steel ball 5 in proper order from inside to outside in the axial hole 11, and the purpose provides the supporting effort, makes convex joint ball junction bend angle keep invariable.
The compact joint ball middle joint 12 is respectively arranged in the middle holes 7 of the compact spherical sleeve II 2 and the compact spherical sleeve III 3 and is fixed by a clamp spring 19 through a shaft; the compact joint ball middle joint 12 is characterized in that a first side connecting end is a convex joint ball, a second side connecting end is a concave joint ball, the sizes of the concave joint ball and the convex joint ball are matched, an axial hole 11 is formed in the top of the convex joint ball, and a spring 4 and a steel ball 5 are sequentially arranged in the axial hole 11 from inside to outside so as to provide supporting acting force and keep the bending angle of the convex joint ball joint constant; a positioning hole 13 is formed in the center of the convex joint ball in the vertical direction, the positioning pin 6 is inserted into the positioning hole 13, at the moment, the positioning pin 6 pushes the steel ball 8 to generate supporting acting force through the extrusion spring 7, the bending angle of the core rod is kept unchanged, and demolding is facilitated.
The compact joint ball head section 15 is embedded in one side of a core rod 16, and a bolt 17 penetrates through a central hole 18 of the core rod 16 and is in threaded connection with the compact joint ball head section 15; a concave joint ball is arranged on one side of the compact joint ball head section 15; the compact joint ball end section 9, the compact joint ball middle section 12 and the compact joint ball head section 15 are connected end to end through a convex joint ball and a concave joint ball, and the connection can be bent and rotated to a set radian within a set angle range.
The outer diameters of the compact spherical sleeve I1, the compact spherical sleeve II 2, the compact spherical sleeve III 3 and the core rod 16 are customized according to different sizes of the inner diameters of the pipe fittings.
During processing, the core rod is matched with a pipe bending mold for use, the compact core rod is installed on a through core rod on pipe bending equipment, a bending starting point is adjusted, and the compact core rod is locked by a nut; the method comprises the steps of coating drawing liquid or drawing oil on a compact core rod, inserting a pipe to be processed into the compact core rod, retreating a trolley on pipe bending machine equipment to a set position, feeding the compact core rod into a core under the action of the equipment, clamping the pipe to be processed by a main clamping cavity and a wheel mold cavity on a pipe bending mold at the moment, bending and shaping the pipe under the action of a crease-resistant plate, a guide mold and equipment action, and performing core pulling action on the compact core rod in the pipe bending process to finish pipe bending operation.
The application discloses a concrete theory of operation of compact plug for thin-walled tube bend of automobile exhaust system is as follows:
the original spherical sleeve and the joint ball are subjected to structure optimization design, so that on the premise of meeting the bending curvature and the bending angle, the gap between the spherical sleeves is shortened to the maximum extent, the bending line of the core rod is smoother, the cracking and the folding of the pipe fitting are avoided, the stable and reliable machining size is ensured, and the qualified rate is improved; meanwhile, the structure is simpler, the cost is reduced, and the operation is flexible and convenient.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.

Claims (9)

1. A compact mandrel for an automotive exhaust system thin-walled tube elbow, the mandrel comprising: the compact spherical joint comprises a compact spherical sleeve I (1), a compact spherical sleeve II (2), a compact spherical sleeve III (3), a compact joint ball end section (9), a compact joint ball middle section (12), a compact joint ball head section (15) and a core rod (16); core rod (16) left side end turns right from a left side and connects gradually compact sphere cover one (1) compact sphere cover two (2) compact sphere cover three (3), compact sphere cover one (1) with pass through between compact sphere cover two (2) compact joint ball end section (9) are connected, compact sphere cover two (2) with between the compact sphere cover three (3) and compact sphere cover three (3) with pass through between the compact joint ball head section (15) compact joint ball middle section (12) are connected, compact joint ball head section (15) with pass through bolt (17) fixed connection between core rod (16).
2. The compact core rod for the automobile exhaust system thin-wall pipe elbow is characterized in that a central hole (7) is formed in the centers of the compact spherical sleeve I (1), the compact spherical sleeve II (2) and the compact spherical sleeve III (3), the left end of the central hole (7) is in a bell-mouth shape, and the bottom of the bell-mouth is provided with a limiting step (8); the right side end of the compact spherical sleeve I (1) and the compact spherical sleeve II (2) is provided with a bell-mouth-shaped first concave surface (10), and the bell-mouth outer edge of the first concave surface (10) is close to the outermost side arc-shaped molded line to form an acute angle; compact spherical cover three (3) right side end is equipped with horn mouth form second concave surface (14), second concave surface (14) horn mouth angle is less than first concave surface (10) horn mouth angle.
3. The compact core rod for the automobile exhaust system thin-walled pipe elbow according to claim 2, characterized in that the compact joint ball end section (9) is installed in the middle hole (7) of the compact spherical sleeve I (1) and fixed by a clamp spring (19) through a shaft; the compact joint ball end section (9) right side link is convex joint ball, convex joint ball top is equipped with axial hole (11), install spring (4), steel ball (5) from inside to outside in proper order in axial hole (11).
4. The compact mandrel for the elbow of the thin-walled tube of the automobile exhaust system according to claim 3, characterized in that the compact joint ball middle joint (12) is respectively installed in the middle hole (7) of the compact spherical sleeve II (2) and the compact spherical sleeve III (3) and is fixed by the snap spring (19) through the shaft.
5. The compact core rod for the thin-walled pipe elbow of the automobile exhaust system according to claim 3, characterized in that the first side connecting end of the middle section (12) of the compact joint ball is a convex joint ball, the second side connecting end of the middle section of the compact joint ball is a concave joint ball, the concave joint ball is matched with the convex joint ball in size, the top of the convex joint ball is provided with the axial hole (11), and the spring (4) and the steel ball (5) are sequentially installed in the axial hole (11) from inside to outside; a positioning hole (13) is formed in the center of the convex joint ball in the vertical direction, and the positioning pin (6) is inserted into the positioning hole (13).
6. The compact core rod for the automobile exhaust system thin-wall pipe elbow is characterized in that the clearances among the compact spherical sleeve I (1), the compact spherical sleeve II (2) and the compact spherical sleeve III (3) meet technical requirements, and the number of the compact spherical sleeve II (2) can be increased or decreased appropriately according to the curvature and the elbow angle of the elbow.
7. The compact mandrel for the automobile exhaust system thin-walled pipe elbow according to claim 1, characterized in that the outer diameters of the compact spherical sleeve I (1), the compact spherical sleeve II (2), the compact spherical sleeve III (3) and the mandrel (16) are customized according to the inner diameter of the pipe.
8. The compact core rod for the automobile exhaust system thin-walled pipe elbow according to claim 1, characterized in that the compact joint ball head section (15) is embedded in one side of the core rod (16), and the bolt (17) passes through a central hole (18) of the core rod (16) and is in threaded connection with the compact joint ball head section (15); one side of the compact joint ball head section (15) is provided with a concave joint ball.
9. The compact mandrel for the automobile exhaust system thin-walled pipe elbow according to claim 5, characterized in that the compact joint ball end section (9), the compact joint ball middle section (12) and the compact joint ball head section (15) are connected end to end through the convex joint ball and the concave joint ball, and the connection can be bent and rotated to a set arc within a set angle range.
CN202021103489.2U 2020-06-15 2020-06-15 Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system Active CN213162582U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021103489.2U CN213162582U (en) 2020-06-15 2020-06-15 Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021103489.2U CN213162582U (en) 2020-06-15 2020-06-15 Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system

Publications (1)

Publication Number Publication Date
CN213162582U true CN213162582U (en) 2021-05-11

Family

ID=75788165

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021103489.2U Active CN213162582U (en) 2020-06-15 2020-06-15 Compact core rod for thin-wall pipe fitting elbow of automobile exhaust system

Country Status (1)

Country Link
CN (1) CN213162582U (en)

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