CN109013916B - Pipe fitting cold bending die - Google Patents
Pipe fitting cold bending die Download PDFInfo
- Publication number
- CN109013916B CN109013916B CN201811172427.4A CN201811172427A CN109013916B CN 109013916 B CN109013916 B CN 109013916B CN 201811172427 A CN201811172427 A CN 201811172427A CN 109013916 B CN109013916 B CN 109013916B
- Authority
- CN
- China
- Prior art keywords
- groove
- clamping block
- pipe fitting
- pipe
- inserts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005452 bending Methods 0.000 title claims abstract description 43
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 2
- 238000013003 hot bending Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
- B21D7/085—Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die
Abstract
The invention discloses a pipe fitting cold bending die which comprises a main die body, a first clamping block, a guide plate seat and a second clamping block, wherein the main die body and the first clamping block are oppositely arranged left and right; the main die body is arranged on a main shaft of the pipe bending machine; the upper die body is provided with a first groove, the first clamping block is provided with a second groove opposite to the first groove, inserts are arranged in the first groove and the second groove, the two inserts are matched to form a clamping hole for accommodating a pipe fitting to be bent, and the main die body and the first clamping block rotate along with a main shaft of the pipe bender; and a third groove is arranged in the second clamping block and is used for accommodating the pipe fitting to be bent. The pipe fitting cold bending die disclosed by the invention has the advantages of simple structure, convenience in disassembly, low energy consumption and easiness in operation, and can be well matched with a pipe fitting by arranging the insert, so that the pipe fitting is protected from being clamped; for different pipe fittings, only the structure of the insert is needed to be designed, so that the cost is saved and the working efficiency is improved.
Description
Technical Field
The invention relates to the field of die equipment for bending pipe fittings, in particular to a pipe fitting cold bending die.
Background
When the pipe fitting is bent, the pipe fitting is bent after being processed to a certain temperature, also called hot bending, the traditional hot bending die is fixed on a main shaft of the pipe bending machine through a positioning round table and a fastening screw, and when the pipe fitting bending die works, the clamping block firmly clamps the pipe fitting, and drives the pipe fitting to be wound on the pipe die of the pipe bending die through the rotation of the main shaft to complete the pipe bending action, and after the pipe bending is finished, the clamping block is loosened, and the pipe unloading is finished to prepare the next pipe fitting.
The pipe bending die with the structure has the following defects that:
1. the joint core body needs to be heated to a certain temperature before being bent, so that the energy consumption is not environment-friendly;
2. because of the heating bend, the operation is inconvenient and easy to scald.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the pipe fitting bending die which is simple in structure, convenient to assemble and disassemble and capable of directly cold-bending and forming without heating, and the technical scheme is as follows:
the invention provides a pipe fitting cold bending die which comprises a main die body, a first clamping block, a guide plate seat and a second clamping block, wherein the main die body and the first clamping block are oppositely arranged left and right; the pipe fitting cold bending die further comprises two inserts, a first groove is formed in the upper die body, an opening of the first groove faces the first clamping block, a second groove opposite to the first groove is formed in the first clamping block, the inserts are arranged in the first groove and the second groove, the two inserts are both curved, side edges of the two inserts are arc-shaped, the two inserts are matched to form a clamping hole for accommodating a pipe fitting to be bent, and the main die body and the first clamping block rotate along with a main shaft of the pipe bender; the second clamping block is internally provided with a third groove, the third groove is used for accommodating a pipe fitting to be bent, the opening direction of the third groove is the same as that of the second groove, the second groove is matched with the third groove, and the guide plate seat and the second clamping block do linear motion in the direction close to the first clamping block.
Further, the shape and the size of the two inserts are the same, and the radian radius of the two inserts is larger than or equal to the radius of the pipe fitting to be bent.
Further, at least one circular arc-shaped convex block is arranged on each of the two inserts and is used for being matched with a step on a pipe fitting to be processed.
Further, the second clamping block is provided with at least one groove, and the groove is used for being matched with a step of a pipe fitting to be processed.
Further, the cross sections of the first groove, the second groove and the third groove are all arc-shaped structures.
Further, a power device for driving the guide plate seat to move is arranged in the guide plate seat.
Further, both inserts are made of an alloy material.
Further, the main die body is fixedly connected with the first clamping block through a connecting piece.
Further, the connecting piece is a guide pin, at least one guide pin is arranged on one side surface of the main die body opposite to the first clamping block, and the guide pin is used for fixing the main die body and the first clamping block.
Further, the two inserts are respectively fixed in the main die body and the first clamping block through fasteners.
The technical scheme provided by the invention has the following beneficial effects:
a. the main die body and the first clamping block are respectively provided with an insert, and the inserts are wear-resistant and can be well matched with the pipe fitting to protect the pipe fitting from being clamped;
b. according to different pipe fittings, the whole main die body is not required to be redesigned, only the structure of the insert is required to be designed, the cost is saved, and the working efficiency is improved;
c. the cold bending pipe fitting die designed by the invention has the advantages of simple structure, convenient disassembly, high efficiency, low energy consumption and easy operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a pipe cold bending die provided by an embodiment of the invention;
FIG. 2 is a cross-sectional view of a bottom plate and a guide plate seat of a pipe cold bending die provided by an embodiment of the invention;
fig. 3 is a perspective view of a main die body of a pipe cold bending die according to an embodiment of the present invention;
fig. 4 is a perspective view of a first clamping block of a pipe cold bending die according to an embodiment of the present invention.
Wherein, the reference numerals include: the clamping device comprises a main die body 1, a first clamping block 2, an insert 3, a guide plate seat 4, a first groove 5, a second groove 6, a third groove 7 and a second clamping block 8.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
In one embodiment of the present invention, a pipe fitting cold bending die is provided, the specific structure is shown in fig. 1 to 4, the pipe fitting cold bending die comprises a main die body 1 and a first clamping block 2 which are oppositely arranged left and right, a guide plate seat 4 arranged on one side of the first clamping block 2, and a second clamping block 8 arranged on the guide plate seat 4, the specific structure of the main die body 1 is shown in fig. 1, the main die body 1 comprises an upper die body 11 and a base 12 arranged at the lower part of the upper die body 11, the upper die body 11 and the base 12 can be integrally formed or can be fixedly connected through a fastener, the specific structure of the upper die body 11 is shown in fig. 3, the upper die body 11 and the base 12 are fixedly arranged on a main shaft of a pipe bending machine, the upper die body 11 and the base 12 rotate along with the main shaft of the pipe bending machine, and the base 12 can effectively prevent the upper die body 11 from inclining in the rotating process (the specific structure of the base 12 is shown in fig. 2).
In this embodiment, the upper mold body 11 is provided with a first groove 5, an opening of the first groove 5 faces the first clamping block 2, the specific structure of the first clamping block 2 is shown in fig. 4, the first clamping block 2 is provided with a second groove 6 opposite to the first groove 5, and preferably, the cross sections of the first groove 5 and the second groove 6 are arc structures; the first groove 5 and the second groove 6 are internally provided with inserts 3, and the two inserts 3 are matched to form a clamping hole for accommodating a pipe fitting to be bent; one insert 3 is secured in the upper die body 11 by fasteners and the other insert 3 is secured in the first clamp block 2 by fasteners.
The second clamping block 8 is internally provided with a third groove 7, the specific structure of the second clamping block 8 is shown in fig. 2, the third groove 7 is used for accommodating a pipe fitting to be bent, the opening directions of the third groove 7 and the second groove 6 are the same, the second groove 6 and the third groove 7 are matched, namely, the pipe fitting to be bent is tightly attached to the groove wall of the second groove 6 and the groove wall of the third groove 7. Preferably, the cross section of the third groove 7 is in a circular arc structure, and the radian radius of the third groove 7 is the same as the radius of the pipe fitting.
The two inserts 3 are made of alloy materials, the alloy materials are preferably aluminum bronze, the main die body 1 and the first clamping block 2 are respectively provided with the inserts 3, the two inserts 3 are in a curved surface shape, the side edges of the two inserts are in an arc shape, the radian radius of the two inserts 3 is larger than or equal to the radius of a pipe fitting to be bent, preferably, the shape and the size of the two inserts 3 are the same, in order to better realize the effect of clamping the pipe fitting, the side edges of the two inserts 3 are in a semicircular structure, the radius of the inserts 3 is the same as the radius of the pipe fitting to be bent, and the two inserts 3 are matched to form a complete circular clamping hole for accommodating the pipe fitting to be bent; for the pipe fittings with different radiuses, only the structure of the insert 3 is designed, when the pipe fittings with different radiuses are bent, the original insert is detached firstly, and then a new insert matched with the pipe fittings is installed, so that the whole main die body does not need to be redesigned, the cost is saved, and the working efficiency is improved; in addition, the insert 3 is provided with a plurality of steps for positioning, the drift diameter of each step is the same, but the tolerance is different, the chamfer of the designed step can not hurt the pipe fitting, the insert is wear-resistant, and the pipe fitting is better protected.
The pipe fittings to be bent are provided with convex blocks and/or grooves which are matched with the pipe fittings to be bent, and the two insert blocks 3 are provided with at least one arc-shaped convex block and/or at least one groove which are used for being matched with steps on the pipe fittings to be processed; since the pipe to be bent is also placed on the second clamping block 8, the second clamping block 8 is provided with at least one groove for engaging with a step on the pipe. The pipe fitting to be bent is placed in the insert 3 and the second clamping block 8, so that the pipe fitting slipping is not easy to occur in the bending process, the pipe fitting is protected, and the yield of the bent pipe fitting is ensured. For different pipe fittings, the second clamping blocks 8 with different structures can be arranged, the whole guide plate seat is not required to be redesigned, the cost is saved, and the working efficiency is improved; in addition, an insert matched with the pipe fitting can be arranged in the second clamping block 8, the radian radius of the insert is the same as the radius of the pipe fitting, at the moment, the radian radius of the third groove 7 in the second clamping block 8 is larger than the radius of the pipe fitting to be bent, and for different pipe fittings, only the insert matched with the pipe fitting is needed to be designed.
The main die body 1 is fixedly connected with the first clamping block 2 through a connecting piece, the connecting piece is a guide pin, at least one guide pin is arranged on one side surface of the main die body 1 opposite to the first clamping block 2, at least one guide pin (preferably two guide pins) are arranged at the upper end of one side surface of the main die body 1 opposite to the first clamping block 2, at least one guide pin (preferably two guide pins) are arranged at the lower end of the main die body, an opening matched with the guide pin is formed in one side surface of the first clamping block 2 opposite to the main die body 1, and the guide pin is used for fixing the main die body 1 and the first clamping block 2.
The specific process of bending the pipe fitting by using the cold pipe die is as follows: when the pipe fitting needs to be bent, the first clamping block 2 approaches the main die body 1 and is fixedly connected through a guide pin (when the cold pipe die is not used, the first clamping block 2 and the main die body 1 keep a certain distance, the guide plate seat 4 is arranged on one side of the first clamping block 2), in fig. 1, the guide plate seat 4 is arranged on the right side of the first clamping block 2 and is in the same straight line with the first clamping block 2, one part of the pipe fitting is installed in a clamping hole between the first clamping block 2 and the main die body 1, the other part of the pipe fitting extends to the second clamping block 8 in the guide plate seat 4, and the pipe fitting is clamped; then under the action of the pipe bender, the main die body 1 and the first clamping block 2 rotate clockwise along with the main shaft of the pipe bender, and as the power device, preferably an oil cylinder, is arranged in the guide plate seat 4, the guide plate seat 4 moves linearly towards the direction close to the first clamping block 2 under the driving of the power device, meanwhile, the pipe fitting is pushed to move, power is provided for moving the pipe fitting, and after the pipe fitting is bent, the guide plate seat 4 and the first clamping block 2 retract to the original position. The cold pipe die designed by the invention can produce pipe fittings with bending angles less than or equal to 180 degrees.
In this embodiment, the pipe fitting to be processed is a hollow circular pipe fitting, a cylindrical connecting rod is arranged at the front end of the guide plate seat 4, the connecting rod is arranged in parallel with the guide plate seat 4, before bending, the pipe fitting is placed on the connecting rod, the distance between the connecting rod and the guide plate seat 4 is the wall thickness of the pipe fitting to be bent, and in the bending process, the pipe fitting can be prevented from being clamped to deform, so that the pipe fitting is protected.
According to the pipe fitting cold bending die disclosed by the invention, the insert is arranged in the main die body and the first clamping block respectively, so that the insert can be well matched with a pipe fitting, and the pipe fitting is protected from being clamped; for different pipe fittings, only the structure of the insert is needed to be designed, so that the cost is saved and the working efficiency is improved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The pipe fitting cold bending die is characterized by comprising a main die body (1) and a first clamping block (2) which are oppositely arranged left and right, a guide plate seat (4) arranged on one side of the first clamping block (2) and a second clamping block (8) arranged on the guide plate seat (4), wherein the main die body (1) comprises an upper die body (11) and a base (12) arranged at the lower part of the upper die body (11), and the main die body (1) is arranged on a main shaft of a pipe bending machine;
the pipe fitting cold bending die further comprises two inserts (3), a first groove (5) is formed in the upper die body (11), an opening of the first groove (5) faces the first clamping block (2), a second groove (6) opposite to the first groove (5) is formed in the first clamping block (2), the inserts (3) are arranged in the first groove (5) and the second groove (6), the two inserts (3) are curved, side edges of the two inserts are arc-shaped, the two inserts (3) are matched to form a clamping hole for accommodating a pipe fitting to be bent, and the main die body (1) and the first clamping block (2) rotate along a main shaft of the pipe bending machine;
a third groove (7) is formed in the second clamping block (8), the third groove (7) is used for accommodating a pipe fitting to be bent, the opening direction of the third groove (7) is the same as that of the second groove (6), the second groove (6) is matched with the third groove (7), and the guide plate seat (4) and the second clamping block (8) do linear motion in the direction close to the first clamping block (2);
at least one circular arc-shaped convex block is arranged on each of the two inserts (3) and is used for being matched with a step on a pipe fitting to be processed;
the two inserts (3) are respectively fixed in the main die body (1) and the first clamping block (2) through fasteners.
2. Pipe fitting cold bending die according to claim 1, characterized in that the shape and the size of the two inserts (3) are identical, and the radian radius of the two inserts (3) is equal to or larger than the radius of the pipe fitting to be bent.
3. Pipe cold bending die according to claim 1, characterized in that the second clamping block (8) is provided with at least one groove for fitting a step of a pipe to be machined.
4. Pipe cold bending die according to claim 1, characterized in that the cross sections of the first groove (5), the second groove (6) and the third groove (7) are all circular arc structures.
5. Pipe cold bending die according to claim 1, characterized in that a power device for driving the guide plate seat (4) to move is arranged in the guide plate seat (4).
6. A pipe cold-bending die according to claim 1, wherein both inserts (3) are made of an alloy material.
7. Pipe cold bending die according to claim 1, characterized in that the main die body (1) is fixedly connected with the first clamping block (2) by means of a connecting piece.
8. Pipe cold bending mould according to claim 7, characterized in that the connecting piece is a guide pin, at least one guide pin being provided on a side of the main mould body (1) opposite the first clamping block (2), said guide pin being used for fixing the main mould body (1) and the first clamping block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172427.4A CN109013916B (en) | 2018-10-09 | 2018-10-09 | Pipe fitting cold bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172427.4A CN109013916B (en) | 2018-10-09 | 2018-10-09 | Pipe fitting cold bending die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109013916A CN109013916A (en) | 2018-12-18 |
| CN109013916B true CN109013916B (en) | 2023-12-29 |
Family
ID=64615869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811172427.4A Active CN109013916B (en) | 2018-10-09 | 2018-10-09 | Pipe fitting cold bending die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109013916B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963654Y (en) * | 2006-05-25 | 2007-10-24 | 贾其书 | Bending die for pipe |
| CN101096041A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Crease-shedding die set for pipe bending machine |
| CN101147942A (en) * | 2007-10-31 | 2008-03-26 | 江苏沪宁钢机股份有限公司 | Round pipe steel component arc clod curving forming mould |
| CN202516903U (en) * | 2012-04-28 | 2012-11-07 | 安徽德系重工科技有限公司 | Die for pipe bender |
| CN103144062A (en) * | 2013-03-07 | 2013-06-12 | 蒋章美 | Multipurpose pawl pipe wrench |
| CN203470653U (en) * | 2013-08-09 | 2014-03-12 | 柳州市桂财机械制造有限公司 | Anti-wrinkling mould for bent pipe production through strong back auxiliary pushing |
| CN205519241U (en) * | 2016-02-22 | 2016-08-31 | 浙江金禾成汽车空调有限公司 | Condenser U -shaped elbow pipe forming die |
| CN205967008U (en) * | 2016-12-19 | 2017-02-22 | 西峡县内燃机进排气管有限责任公司 | Bending mould quick change structure |
| CN108080489A (en) * | 2018-01-07 | 2018-05-29 | 安徽合力股份有限公司 | A kind of trimming blanking die for forklift truck water tank cover plate |
| CN208825366U (en) * | 2018-10-09 | 2019-05-07 | 江阴机械制造有限公司 | A kind of pipe fitting clod wash mold |
-
2018
- 2018-10-09 CN CN201811172427.4A patent/CN109013916B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963654Y (en) * | 2006-05-25 | 2007-10-24 | 贾其书 | Bending die for pipe |
| CN101096041A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Crease-shedding die set for pipe bending machine |
| CN101147942A (en) * | 2007-10-31 | 2008-03-26 | 江苏沪宁钢机股份有限公司 | Round pipe steel component arc clod curving forming mould |
| CN202516903U (en) * | 2012-04-28 | 2012-11-07 | 安徽德系重工科技有限公司 | Die for pipe bender |
| CN103144062A (en) * | 2013-03-07 | 2013-06-12 | 蒋章美 | Multipurpose pawl pipe wrench |
| CN203470653U (en) * | 2013-08-09 | 2014-03-12 | 柳州市桂财机械制造有限公司 | Anti-wrinkling mould for bent pipe production through strong back auxiliary pushing |
| CN205519241U (en) * | 2016-02-22 | 2016-08-31 | 浙江金禾成汽车空调有限公司 | Condenser U -shaped elbow pipe forming die |
| CN205967008U (en) * | 2016-12-19 | 2017-02-22 | 西峡县内燃机进排气管有限责任公司 | Bending mould quick change structure |
| CN108080489A (en) * | 2018-01-07 | 2018-05-29 | 安徽合力股份有限公司 | A kind of trimming blanking die for forklift truck water tank cover plate |
| CN208825366U (en) * | 2018-10-09 | 2019-05-07 | 江阴机械制造有限公司 | A kind of pipe fitting clod wash mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109013916A (en) | 2018-12-18 |
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