CN115283561A - Double-pipe expanding structure for assembling radiator - Google Patents

Double-pipe expanding structure for assembling radiator Download PDF

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Publication number
CN115283561A
CN115283561A CN202210948684.2A CN202210948684A CN115283561A CN 115283561 A CN115283561 A CN 115283561A CN 202210948684 A CN202210948684 A CN 202210948684A CN 115283561 A CN115283561 A CN 115283561A
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China
Prior art keywords
chuck
water
positioning block
pipe
double
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Pending
Application number
CN202210948684.2A
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Chinese (zh)
Inventor
叶晓丹
李雄辉
张建发
王伟军
罗石雄
唐晓亮
熊社会
刘奇琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG FARET AUTO RADIATOR CO Ltd
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GUANGDONG FARET AUTO RADIATOR CO Ltd
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Application filed by GUANGDONG FARET AUTO RADIATOR CO Ltd filed Critical GUANGDONG FARET AUTO RADIATOR CO Ltd
Priority to CN202210948684.2A priority Critical patent/CN115283561A/en
Publication of CN115283561A publication Critical patent/CN115283561A/en
Pending legal-status Critical Current

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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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Abstract

The invention discloses a double-pipe expanding structure for assembling a radiator, which comprises a double-station water pipe clamping mechanism, wherein the water pipe clamping mechanism comprises a first chuck component and a second chuck component, the first chuck component is provided with a first positioning hole and a second positioning hole, one side of the first chuck component is connected with a chuck pushing component, the lower part of the second chuck component is fixed with a double-station water pipe positioning mechanism, the upper part of the second chuck component is fixed with a water chamber assembling mechanism, the water chamber assembling mechanism comprises a water chamber positioning block for fixing a water chamber and a cylinder punching component, the cylinder punching component is fixed above the water chamber positioning block, and the lower part of the water chamber positioning block is connected with a double-station pipe expanding component. The double-pipe expanding structure can simultaneously expand 2 water pipes at one time, and can automatically expand and assemble the water chamber, the water inlet pipe and the water outlet pipe together, thereby improving the assembly efficiency and the production efficiency of the radiator.

Description

Double-pipe expanding structure for assembling radiator
Technical Field
The invention relates to the technical field of assembling radiators by using pipe expanders, in particular to a double-pipe expanding structure for assembling radiators in a pipe expander.
Background
The automobile radiator is an indispensable important part in an automobile water-cooled engine cooling system, and mainly comprises an upper water chamber, a lower water chamber, a radiator core body and the like. The cooling liquid flows in the radiator core, and the air passes through the radiator core. The radiator is a heat exchanger because the hot coolant cools down by radiating heat to the air and the cold air heats up by absorbing the heat radiated from the coolant.
The upper and lower water chambers of the radiator are provided with a water inlet pipe and a water outlet pipe, wherein the water chamber and the water pipe of the radiator are assembled together by adopting a pipe expander to expand pipes. The current structure of expanding, only 1 chuck with have 1 to expand the head, can only press from both sides tight 1 water pipe once to can only artifical manual promotion chuck press from both sides tightly, can only expand 1 water pipe tightly adorn the hydroecium, the packaging efficiency is very slow, influences the production efficiency of radiator, can not satisfy the production demand, the hand labor drops into greatly, and the cost of labor is high.
Disclosure of Invention
Aiming at the problems in the prior art, the technical problem to be solved by the invention is to provide a double-station water pipe clamping mechanism and a double-station pipe expanding head assembly, which can simultaneously expand 2 water pipes at a time, can automatically expand and assemble a water chamber, a water inlet pipe and a water outlet pipe together, reduces the process of expanding and assembling the water pipes into the water chamber, improves the assembly efficiency, thereby improving the production efficiency of a radiator, greatly meeting the production requirement, reducing the labor cost and reducing the labor input.
In order to solve the technical problem, the invention provides a double-pipe expanding structure for assembling a radiator, which comprises a double-pipe expanding structure for assembling the radiator in a pipe expanding machine, wherein the double-pipe expanding structure comprises a double-station water pipe clamping mechanism, the water pipe clamping mechanism comprises a first chuck component and a second chuck component, the first chuck component and the second chuck component are arranged oppositely, the first chuck component is provided with a first positioning hole capable of being filled with a water pipe and a second positioning hole capable of being filled with a water outlet pipe, the first positioning hole is arranged on one side of the second positioning hole, one side of the first chuck component is connected with a chuck pushing component, the double-station water pipe positioning mechanism is fixed below the second chuck component, the double-station assembling mechanism is fixed above the second chuck component, the water chamber assembling mechanism comprises a water chamber positioning block for fixing a water chamber and an air cylinder stamping component, the air cylinder stamping component is fixed above the water chamber positioning block, and the pipe expanding component is connected below the water chamber positioning block.
According to the further improvement of the technical scheme, the cylinder stamping assembly comprises an electromagnetic valve and a cylinder, the electromagnetic valve is arranged on one side of the cylinder and connected with the cylinder, an air inlet of the electromagnetic valve is connected with an air source, and a piston rod of the cylinder is connected with the water chamber positioning block.
According to the technical scheme, the cylinder stamping assembly comprises a foot switch, the foot switch is connected with the electromagnetic valve, and the foot switch controls the electromagnetic valve to be closed and opened.
Aiming at the further improvement of the technical scheme, the first chuck component comprises a first chuck and a first sliding block, the first sliding block is fixed at the lower end of the first chuck, and a first dovetail groove matched with the first sliding block to slide is arranged below the first sliding block.
Aiming at the further improvement of the technical scheme, the chuck pushing assembly comprises a quick pushing chuck and a push rod, one end of the push rod is connected with the quick pushing chuck, and the other end of the push rod is connected with the first chuck assembly so as to push the first chuck assembly and the second chuck assembly to clamp.
According to the technical scheme, the water pipe positioning mechanism comprises a first positioning block for positioning the water inlet pipe and a second positioning block for positioning the water outlet pipe, the first positioning block is fixed on one side of the second positioning block, and the first positioning block and the second positioning block are fixed below the second chuck assembly.
According to the further improvement of the technical scheme, the water chamber positioning block is provided with a clamping groove, and the water chamber positioning block is used for fixing the water chamber through the clamping groove.
Aiming at the further improvement of the technical scheme, the expansion head component comprises a first expansion head and a second expansion head, wherein the first expansion head is arranged on one side of the second expansion head and is positioned below the water chamber positioning block.
Compared with the prior art, the scheme of the invention at least comprises the following beneficial effects:
the double-pipe expanding structure comprises a double-station water pipe clamping mechanism, the water pipe clamping mechanism comprises a first chuck component and a second chuck component, the first chuck component is provided with a first positioning hole and a second positioning hole, one side of the first chuck component is connected with a chuck pushing component, the double-station water pipe positioning mechanism is fixed below the second chuck component, a water chamber assembling mechanism is fixed above the second chuck component, the water chamber assembling mechanism comprises a water chamber positioning block for fixing a water chamber and an air cylinder stamping component, the air cylinder stamping component is fixed above the water chamber positioning block, and the double-station pipe expanding component is connected below the water chamber positioning block. According to the invention, a water inlet pipe and a water outlet pipe can be arranged in a first positioning hole and a second positioning hole of a first chuck component, the first chuck component is pushed forwards by a chuck pushing component, so that the first chuck component and the second chuck component are clamped and closed, the water inlet pipe and the water outlet pipe are clamped, the water inlet pipe and the water outlet pipe are respectively positioned by using a double-station water pipe positioning mechanism, a water chamber is arranged on a water chamber positioning block, the water inlet pipe and the water outlet pipe are expanded by using a double-station expanding component, a cylinder punching component pushes the water chamber positioning block and the expanding component downwards, and the water chamber, the water inlet pipe and the water outlet pipe are expanded and assembled together. The double-pipe expanding structure can simultaneously expand 2 water pipes at one time, can automatically expand and assemble the water chamber, the water inlet pipe and the water outlet pipe together, reduces the working procedure of expanding and assembling the water pipes into the water chamber, and improves the assembly efficiency, thereby improving the production efficiency of the radiator, greatly meeting the production requirement, and achieving the purposes of reducing labor cost and labor cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural view of a double tube expanding structure for use in a tube expander of the present invention;
fig. 2 is a schematic structural view of a water chamber assembly mechanism of the present invention;
FIG. 3 is a schematic diagram of the use of the assembled water chamber with the double-tube expanding structure of the invention;
fig. 4 is an electrical schematic diagram of the solenoid valve of the present invention electrically connected to the cylinder and the foot switch.
In the figure, a water pipe clamping mechanism 1, a first chuck component 11, a first positioning hole 111, a second positioning hole 112, a first chuck 113, a first slider 114, a second chuck component 12, a chuck pushing component 13, a fast pushing chuck 131, a push rod 132, a water pipe positioning mechanism 2, a first positioning block 21, a second positioning block 22, a water chamber assembling mechanism 3, a water chamber positioning block 31, a clamping groove 311, an air cylinder punching component 32, an electromagnetic valve 321, an air cylinder 322, an air source 323, a foot switch 324, a piston rod 325, an air cylinder fixing rod 326, an expansion head component 33, a first expansion head 331, a second expansion head 332, a base 4, a water inlet pipe 5, a water outlet pipe 6 and a water chamber 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, a double-tube expanding structure for assembling a radiator according to a first embodiment of the present invention includes a double-tube expanding structure for assembling a radiator in a tube expander, the double-tube expanding structure includes a double-station water tube clamping mechanism, the water tube clamping mechanism includes a first chuck component 11 and a second chuck component 12, the first chuck component 11 and the second chuck component 12 are disposed opposite to each other, the first chuck component 11 is provided with a first positioning hole 111 capable of being installed in a water tube 5 and a second positioning hole 112 capable of being installed in a water tube 6, the first positioning hole 111 is disposed on one side of the second positioning hole 112, one side of the first chuck component 11 is connected with a chuck pushing component 13, the lower portion of the second chuck component 12 is fixed with a double-station water tube positioning mechanism 2, the upper portion of the second chuck component 12 is fixed with an assembling mechanism 3 of a water chamber 7, the assembling mechanism 3 of the water chamber 7 includes a positioning block 31 for fixing the water chamber 7 and an air cylinder punching component 32, and the air cylinder punching component 32 is fixed above the positioning block 31. Specifically, a clamping groove 311 is formed in a water chamber positioning block 31, and the water chamber positioning block 31 is fixed in the water chamber 7 through the clamping groove 311; and a double-station expanding head assembly 33 is connected below the water chamber positioning block 31. According to the invention, a water inlet pipe 5 and a water outlet pipe 6 can be arranged in a first positioning hole 111 and a second positioning hole 112 of a first chuck component 11, a chuck pushing component 13 pushes the first chuck component 11 forwards to enable the first chuck component 11 and a second chuck component 12 to be clamped and closed so as to clamp the water inlet pipe 5 and the water outlet pipe 6, a double-station water pipe positioning mechanism 2 positions the water inlet pipe 5 and the water outlet pipe 6 respectively, a water chamber 7 is arranged on a water chamber positioning block 31, and an air cylinder punching component 32 pushes the water chamber positioning block 31 and a bit expanding component 33 downwards so as to tightly expand and assemble the water chamber 7, the water inlet pipe 5 and the water outlet pipe 6 together.
When the embodiment of the invention is specifically realized, the cylinder stamping assembly 32 of the invention comprises an electromagnetic valve 321 and a cylinder 322, the electromagnetic valve 321 is arranged on one side of the cylinder 322 and is connected with the cylinder 322, an air inlet of the electromagnetic valve 321 is connected with an air source 323, a piston rod 325 of the cylinder 322 is connected with the water chamber positioning block 31, the cylinder stamping assembly 32 comprises a foot switch 324, the foot switch 324 is connected with the electromagnetic valve 321, the foot switch 324 controls the electromagnetic valve 321 to be closed and opened, the piston rod 325 of the cylinder 322 is controlled to ascend and descend after the electromagnetic valve 321 is closed, and the water chamber positioning block 31 and the expansion head assembly 33 are pushed downwards through the ascending and descending of the piston rod 325 of the cylinder 322, so that the water inlet pipe 5 and the water outlet pipe 6 are assembled and installed with the water chamber 7 in a tightening manner. In a preferred embodiment of the present invention, a cylinder fixing rod 326 is fixed above the cylinder 322, and the cylinder 322 is fixed to the pipe expander by the cylinder fixing rod 326.
In a specific implementation of the present invention, the first chuck assembly 11 includes a first chuck 113 and a first slider 114, the first slider 114 is fixed at a lower end of the first chuck 113, a first dovetail groove sliding in cooperation with the first slider 114 is provided below the first slider 114, and the first dovetail groove is a dovetail groove
Figure BDA0003788529140000051
The first chuck 113 is an L-shaped fixing block, the chuck pushing assembly 13 includes a fast pushing chuck 131 and a push rod 132, one end of the push rod 132 is connected to the fast pushing chuck 131, the other end of the push rod 132 is connected to the first chuck assembly 11, a second dovetail groove matched with the fast pushing chuck 131 is arranged below the fast pushing chuck 131, the chuck 131 is conveniently and fast pushed through the second dovetail groove to push the first chuck assembly 11 to be clamped with the second chuck assembly 12, the chuck pushing assembly 13 and the first chuck assembly 11 are arranged on the base 4, and the chuck pushing assembly 13 and the first chuck assembly 11 are mounted on the base 4.
The water pipe positioning mechanism 2 comprises a first positioning block 21 and a second positioning block 22, wherein the first positioning block 21 is fixed on one side of the second positioning block 22, the first positioning block 21 can position the angle of a water inlet pipe 5, the second positioning block 22 can position the angle of a water outlet pipe 6, the first positioning block 21 and the second positioning block 22 are both positioned below a second chuck component 12, the second chuck component 12 is an L-shaped fixing block, the first positioning block 21 and the second positioning block 22 are provided with arc shapes matched with the outer edges of the water inlet pipe 5 and the water outlet pipe 6, the angle positioning of the water inlet pipe 5 and the water outlet pipe 6 clamped by the first chuck component 11 and the second chuck component 12 is facilitated, the subsequent assembly of the water inlet pipe 5 and the water outlet pipe 6 with a water chamber 7 is facilitated, and the assembling accuracy of the water inlet pipe 5 and the water outlet pipe 6 is improved.
The enlarged head assembly 33 of the present invention comprises a first enlarged head 331 and a second enlarged head 332, wherein the first enlarged head 331 is disposed at one side of the second enlarged head 332 and below the water chamber positioning block 31, so that the water inlet pipe 5 and the water outlet pipe 6 are assembled with the water chamber 7 in a tightened manner when the water chamber positioning block 31 descends. When the cylinder 322 pushes the water chamber positioning block 31 to move downward, the water chamber positioning block 31 can push the first expanding head 331 and the second expanding head 332 to punch downward, so that the two first expanding heads 331 and the second expanding heads 332 below the water chamber positioning block 31 are respectively clamped at the connection parts of the water inlet pipe 5, the water outlet pipe 6 and the water chamber 7, and the first expanding heads 331 and the second expanding heads 332 enable the pipe orifices of the water inlet pipe 5 and the water outlet pipe 6 to be expanded by impulsive force, thereby facilitating the expansion and assembly of the water inlet pipe 5, the water outlet pipe 6 and the water chamber 7.
As shown in fig. 4, the specific air path control between the solenoid valve 321, the foot switch 324, and the air cylinder 322 according to the present invention is as follows:
the cylinder 322 is electrically connected with an electromagnetic valve 321, the electromagnetic valve 321 is electrically connected with a foot switch 324 and an air source 323, when the foot switch 324 is stepped, the foot switch 324 is closed to electrify the electromagnetic valve 321, an air path of the electromagnetic valve 321 is conducted from P → A when the power is off, a piston rod 325 of the cylinder 322 is pushed upwards to the top by high-pressure air flow, exhaust is conducted from B → S, after the electromagnetic valve 321 is electrified, the valve is turned by internal electromagnetic force, air is fed from P → B instead, the cylinder 322 stretches downwards to complete the punching of the cylinder 322; after punching, the exhaust gas is discharged from A → R, and the cylinder 322 controls the piston rod 325 to extend and retract downwards; conversely, when the foot switch 324 is released, the circuit is cut off, the electromagnetic valve 321 is de-energized, the air cylinder 322 is reset, and the piston rod 325 of the air cylinder 322 extends upwards.
Compared with the prior art, the technical scheme disclosed by the embodiment has the following beneficial effects:
in the above embodiment, according to the double-tube expanding structure of the present invention, the water inlet tube 5 and the water outlet tube 6 can be installed in the first positioning hole 111 and the second positioning hole 112 of the first chuck assembly 11, the first chuck assembly 11 is pushed forward by the chuck pushing assembly 13, so that the first chuck assembly 11 and the second chuck assembly 12 are clamped and closed, thereby clamping the water inlet tube 5 and the water outlet tube 6, the water inlet tube 5 and the water outlet tube 6 are respectively positioned by the double-station water tube positioning mechanism 2, the water chamber 7 is installed on the water chamber positioning block 31, the water inlet tube 5 and the water outlet tube 6 are expanded by the double-station expanding assembly 33, the cylinder punching assembly 32 pushes the water chamber positioning block 31 and the expanding assembly 33 downward, and the water chamber 7, the water inlet tube 5 and the water outlet tube 6 are assembled by expanding. The double-pipe expanding structure can simultaneously expand 2 water pipes at one time, can automatically expand and assemble the water chamber 7, the water inlet pipe 5 and the water outlet pipe 6 together, reduces the working procedure of expanding and assembling 1 water pipe into the water chamber 7, improves the assembly efficiency, thereby improving the production efficiency of the radiator, greatly meeting the production requirement, and achieving the purposes of reducing labor cost and labor cost. In addition, the double-pipe expanding structure can be arranged at the position of the original pipe expanding structure, and no burden is added to the pipe expanding machine. Compared with the existing pipe expanding structure, the double-pipe expanding structure of the invention can expand only 1 water pipe at one time, thus reducing 1 procedure and improving the production efficiency.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (8)

1. A double-barrelled pipe expanding structure for radiator equipment which characterized in that: including the double-barrelled tube expanding structure who is arranged in the expander equipment radiator, double-barrelled tube expanding structure includes the water pipe clamping mechanism in duplex position, water pipe clamping mechanism includes first chuck subassembly and second chuck subassembly, first chuck subassembly and second chuck subassembly set up relatively, first chuck subassembly is seted up and is loaded into the first locating hole of water pipe and can be adorned the second locating hole of outlet pipe, one side of second locating hole is located in first locating hole, one side of first chuck subassembly is connected with chuck promotion subassembly, the below of second chuck subassembly is fixed with the water pipe positioning mechanism in duplex position, the top of second chuck subassembly is fixed with hydroecium equipment mechanism, equipment hydroecium mechanism is including the hydroecium locating piece and the cylinder punching press subassembly of fixed hydroecium, the top at the locating piece is fixed to the cylinder punching press subassembly, the below of hydroecium is connected with the expander subassembly in duplex position.
2. The double tube expanding structure for a radiator assembly according to claim 1, wherein: the cylinder punching component comprises an electromagnetic valve and a cylinder, the electromagnetic valve is arranged on one side of the cylinder and connected with the cylinder, an air inlet of the electromagnetic valve is connected with an air source, and a piston rod of the cylinder is connected with the water chamber positioning block.
3. The double tube expanding structure for a radiator assembly according to claim 2, wherein: the cylinder stamping assembly comprises a foot switch, and the foot switch is connected with the electromagnetic valve.
4. The double tube expanding structure for a radiator assembly according to claim 1, wherein: the first chuck component comprises a first chuck and a first sliding block, the first sliding block is fixed at the lower end of the first chuck, and a first dovetail groove matched with the first sliding block to slide is arranged below the first sliding block.
5. The double tube expanding structure for a radiator assembly as set forth in claim 1, wherein: the chuck pushes away the subassembly and includes that it links to each other to promote chuck and push rod fast, the one end of push rod links to each other with the fast chuck subassembly, the other end of push rod links to each other so that promote first chuck subassembly and the second chuck subassembly and press from both sides tightly.
6. The double tube expanding structure for a radiator assembly as set forth in claim 1, wherein: the water pipe positioning mechanism comprises a first positioning block and a second positioning block, the first positioning block is used for positioning the water inlet pipe, the second positioning block is used for positioning the water outlet pipe, the first positioning block is fixed to one side of the second positioning block, and the first positioning block and the second positioning block are fixed below the second chuck component.
7. The double tube expanding structure for a radiator assembly as set forth in claim 1, wherein: the water chamber positioning block is provided with a clamping groove and is fixed in the water chamber through the clamping groove.
8. The double tube expanding structure for a radiator assembly according to claim 1, wherein: the head expanding assembly comprises a first expanding head and a second expanding head, wherein the first expanding head is arranged on one side of the second expanding head and is positioned below the water chamber positioning block.
CN202210948684.2A 2022-08-09 2022-08-09 Double-pipe expanding structure for assembling radiator Pending CN115283561A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418699A (en) * 2013-08-20 2013-12-04 天津市亚星散热器有限公司 Reaming and claw fixing tool for core body of radiator and using method of reaming and claw fixing tool
CN204052659U (en) * 2014-08-08 2014-12-31 浙江龙泉鑫宇汽车空调有限公司 A kind of pipe expander of double Continuous maching
CN105195629A (en) * 2015-11-10 2015-12-30 贵州贵航汽车零部件股份有限公司 Pipe nozzle riveting device
KR102169391B1 (en) * 2019-12-10 2020-10-26 하윤기 Industrial expander
CN213591579U (en) * 2020-09-07 2021-07-02 四川德鑫源机器人有限公司 Automatic pipe expanding device of heat exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418699A (en) * 2013-08-20 2013-12-04 天津市亚星散热器有限公司 Reaming and claw fixing tool for core body of radiator and using method of reaming and claw fixing tool
CN204052659U (en) * 2014-08-08 2014-12-31 浙江龙泉鑫宇汽车空调有限公司 A kind of pipe expander of double Continuous maching
CN105195629A (en) * 2015-11-10 2015-12-30 贵州贵航汽车零部件股份有限公司 Pipe nozzle riveting device
KR102169391B1 (en) * 2019-12-10 2020-10-26 하윤기 Industrial expander
CN213591579U (en) * 2020-09-07 2021-07-02 四川德鑫源机器人有限公司 Automatic pipe expanding device of heat exchanger

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* Cited by examiner, † Cited by third party
Title
中国标准出版社: "中国强制性国家标准汇编 医药、卫生、劳动保护卷 3", 华南理工大学出版社 *

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