Unlock instant, AI-driven research and patent intelligence for your innovation.

Upper-end inserting type combined clamping device for pipe expander

A clamping device and plug-in technology, applied in the direction of feeding device, positioning device, storage device, etc., can solve the problems of increasing the thermal conductivity of the heat exchanger, not ensuring that the U-shaped tube is completely clamped, and not easy to fix, etc. To achieve the effect of solving the mutual interference of the clamping jaws

Active Publication Date: 2018-11-02
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The tube expander is used to expand the diameter of many U-shaped tubes of heat exchangers placed in the heat sink, so that they can be tightly combined with the heat sink to avoid loosening and increase the thermal conductivity of the heat exchanger. In addition, the U-shaped tubes Flaring and flanging are carried out at the end to facilitate the next process. Since the workpiece will shrink when the tube expander expands the tube, the U-shaped tube needs to be fixed well, but the U-shaped tube of the heat exchanger is U-shaped. Because of its special shape, the end is not easy to fix well. On the other hand, when the multi-row tube heat sink is processed, the installation of the clamping device at the lower tube end of the U-shaped tube will also interfere, and it cannot be clamped when multiple rows of tubes are clamped at the same time. Ensure that each U-shaped tube can be fully clamped

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Upper-end inserting type combined clamping device for pipe expander
  • Upper-end inserting type combined clamping device for pipe expander
  • Upper-end inserting type combined clamping device for pipe expander

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0042] see Figure 1-9 , an upper-end plug-in combined clamping device for a tube expander, the device includes a simple clamping device at the straight pipe end and a U-shaped end clamping device, and the simple clamping device at the straight pipe end includes a sleeve and a sleeve mounting plate , inner support jaw, inner support jaw mounting plate, expansion tube punch and expansion tube punch mounting plate; U-shaped end clamping device includes clamping seat, inner clamping jaw, outer clamping jaw, pin shaft , return spring, inner jaw connecting plate, outer jaw connecting plate, limit snap ring, clamping push rod and jacking mechanism;

[0043]Simple clamping device at the straight pipe end: the sleeve is a thin-walled cylinder with openings at both ends. The upper end of the claw is installed on the inner supporting claw mounting plate, and there is a raised step at the lower end of the inner supporting claw. On the raised step, there is a week of claw strips evenly d...

Embodiment example 2

[0047] see Figure 1-9 , a clamping method for an upper-end insertion combined clamping device for a tube expander described in Example 1, comprising the following steps:

[0048] Clamping method of U-shaped end of U-shaped pipe:

[0049] ①According to the structure and arrangement of the heat sink to be processed, the corresponding clamping device layout is adopted, and the clamping device and U-shaped tube are arranged one-to-one;

[0050] ② Place the lower end of the U-shaped tube on the heat sink to be processed in the U-shaped groove on the clamping seat in the clamping device with the clamping jaws normally open;

[0051] ③The clamping top plate on the jacking device rises to push the clamping push rod up, and pushes the connecting hinge between the claw connecting plate and the clamping push rod to rise, the angle between the two claw connecting plates gradually decreases, and the connecting plate is connected by the claws. Plate traction, the two clamping claws rotat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an upper-end inserting type combined clamping device and a clamping method for a pipe expander. The device comprises a simple clamping device for a straight pipe end and a clamping device for a U-shaped end, wherein the simple clamping device for the straight pipe end comprises a sleeve, an inner support clamping jaw and an expansion pipe punch; the clamping device for theU-shaped end comprises a clamping seat, an inner clamping jaw, an outer clamping jaw, an inner clamping jaw connecting plate, an outer clamping jaw connecting plate, a reset spring, a clamping push rod and a jacking mechanism; the sleeve sleeves the straight pipe end of a U-shaped pipe; the inner support clamping jaw is inserted into the U-shaped straight pipe end; an outward support force clampsthe straight pipe end of the pipe fitting; a U-shaped groove in the clamping seat of the clamping device for the U-shaped end is used for fixing and supporting the pipe fitting; the clamping jaws areused for clamping the U-shaped end of the pipe fitting; and after the straight pipe end of the U-shaped pipe and the U-shaped pipe end are fixedly clamped, the pipe expander can be used for carryingout pipe expansion processing on the U-shaped pipe fitting.

Description

technical field [0001] The invention relates to a U-shaped tube expander, in particular to an upper end insertion combined clamping device for the tube expander. Background technique [0002] The tube expander is used to expand the diameter of many U-shaped tubes of heat exchangers placed in the heat sink, so that they can be tightly combined with the heat sink to avoid loosening and increase the thermal conductivity of the heat exchanger. In addition, the U-shaped tubes Flaring and flanging are carried out at the end to facilitate the next process. Since the workpiece will shrink when the tube expander expands the tube, the U-shaped tube needs to be fixed well, but the U-shaped tube of the heat exchanger is U-shaped. Due to its special shape, it is not easy to fix it well. On the other hand, when the multi-row tube heat sink is processed, the installation of the clamping device at the lower tube end of the U-shaped tube will also interfere, and it cannot be clamped when mul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21D43/00B21D39/20B21D53/06
CPCB21D39/20B21D43/003B21D53/06
Inventor 韩林山周甲伟范素香上官林建胡全义谭群燕杨杰
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER