WO2017219454A1

WO2017219454A1 - Combined cutting device and method using high-pressure liquid jetting and chemical methods

Info

Publication number: WO2017219454A1
Application number: PCT/CN2016/093518
Authority: WO
Inventors: 张丛
Original assignee: 深圳市樊溪电子有限公司
Priority date: 2016-06-22
Filing date: 2016-08-05
Publication date: 2017-12-28
Also published as: CN106078920A

Abstract

Provided is a combined cutting device using high-pressure liquid jetting and chemical methods. The combined cutting device is composed of a chemical cutting device and a high-pressure liquid jetting cutting device, wherein the chemical cutting device comprises an ignition blasting short joint, a gas generator, a pressure reliever, an anchor short joint assembly, a chemical cartridge, a cutting head, a heavy block, and a centralizer; and the high-pressure liquid jetting cutting device comprises a valve yoke (9), fixing arms (10, 11), switching valves (2, 3), actuators (14, 15), nozzles (12, 13) and nozzle pipes (16, 17), wherein one end of the valve yoke is fixed to one end of a robot arm (8) of a rotary robot, the switching valves are respectively fixed to the other end of the valve yoke by means of the fixing arms, one end of each switching valve is connected to an actuator, the other end of each switching valve is connected to a nozzle pipe, and the hole diameter of a side, connected to the switching valve, of each nozzle pipe is of a standard size. Further provided is a method for cutting a material using the combined cutting device.

Description

Combined cutting device and method using high pressure liquid jet and chemical method

Technical field

This invention relates to cutting apparatus in the manufacture of molds, and more particularly to a combined cutting apparatus employing high pressure liquid jet and chemical methods.

Background technique

For a long time, mold manufacturing has been the cornerstone of manufacturing in various countries. In the past few decades, this traditional process has developed greatly, from the initial use of manual steel boring to remove excess materials, and now rely on modern technology. The furnace heats the steel until it is now possible to achieve perfect product quality and top productivity with computer processing.

At present, the mainstream technology is EDM technology, which is mainly applied to the cutting of workpiece materials, such as machining blind holes and cavities. EDM uses fuzzy logic technology to adapt to various small changes in processing conditions, so that the workpiece can reach the micron-scale surface. quality. High-pressure liquid jet cutting technology is a supplement, and the processing speed is very good. It is suitable for roughing production before EDM finishing and cutting of bulk materials, which is beneficial to shorten production time. The chemical cutting uses the cable to start, the current detonates, and the chemicals in the cutting tool are in contact with each other. The high-temperature and high-pressure chemical corrosive agent generated is sprayed from the small holes in the lower part of the tool at a high speed, and the jet cutting is first detonated by the electric detonator. The fuse, which in turn causes the compressed shaped explosive to detonate, the metallic copper embedded in the periphery of the jet cutter is sprayed outward at a very high speed and pressure, and generally can be sprayed at 360 degrees to cut the tube. This cutting incision is neat, but the chemical agent is toxic and harmful to the construction workers.

Consider combining two cutting techniques to minimize the use of chemicals, reduce the use of high temperature and high pressure chemical etchants, add high pressure and harmless liquids, and then perform a jet cutting process.

Summary of the invention

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a combined cutting apparatus using high pressure liquid jet and chemical methods, consisting of a chemical cutting apparatus and a high pressure liquid jet cutting apparatus, wherein the chemical cutting apparatus includes an ignition blast short section, a gas generator, and a pressure The utility model comprises a release device, an anchor short joint assembly, a chemical cartridge, a cutting head, a heavy plug and a centralizer, and the high pressure liquid jet cutting device comprises a valve frame, a fixed arm, an on-off valve, an actuator, a nozzle and a nozzle tube, wherein the valve One end of the frame is fixed at one end of the robot arm of the rotating robot, and the other end of the valve frame is fixed to the switch valve through a fixed arm, one end of the switch valve is connected to the actuator, the other end is respectively connected to the nozzle tube, and one of each nozzle tube is connected with the switch valve The side aperture is a standard size.

Preferably, one nozzle orifice has a diameter of 0.003 inches and the other nozzle orifice has a diameter of 0.008 inches, and the nozzles are respectively fixed to the other end of the nozzle tube.

Preferably, the on-off valve is connected to the base end of an ultra-high pressure fluid line and is thereby connected to the discharge side of an ultra-high pressure pump.

Preferably, the discharge pressure of the ultrahigh pressure pump is kept constant.

It is also an object of the present invention to provide a method for cutting according to the above-described combined cutting apparatus using high pressure liquid jet and chemical methods, comprising the steps of:

(1) The igniter is used to detonate the cutter. After the solid gunpowder is ignited, pressure is generated to force the piston in the anchor nipple to move downward. Under the cooperation of the wedge body, the cutting device is fixed. As the gunpowder burns, the pressure inside the tool continues to rise and presses. Breaking the sealing cap on the chemical cartridge, forcing the chemical agent to contact with the catalyst, and the chemical reaction occurs under the action of the catalyst, causing the temperature and pressure to suddenly increase, causing the piston in the cutting head to move downward. Into the heavy plug, exposing all the radial small holes so that the chemical in the reaction is violently sprayed to the nozzle;

(2) the tip of one nozzle is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot;

(3) When the compressed air is supplied to the actuator in a certain direction, the on-off valve is opened, and then the high-pressure water flows through the ultra-high pressure fluid pipeline in a certain direction, and is mixed with the chemical agent at a high speed in the orifice formed by the nozzle, and is ejected in a certain direction. And through the nozzle tube;

(4) According to the above steps (1)-(3), once the required cutting work is completed, the compressed air supplied to the actuator is stopped, the on-off valve is closed, and the injection of the high-pressure water is stopped;

(5) the tip of the other nozzle is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot;

(6) When the compressed air is supplied to the actuator in a certain direction, the on-off valve is opened, and the high-pressure water flows through the ultra-high pressure fluid pipeline in a certain direction, and is injected after the orifice formed by the nozzle is mixed with the chemical agent, and passes through the nozzle tube in a certain direction. ;

(7) According to the above steps (5) - (6), as soon as the required cutting work is completed, the compressed air supplied to the actuator is stopped, so that the on-off valve is closed and the injection of the high-pressure water is stopped.

Preferably, the cut workpiece is a thin plate member of a different material stack, the thin plate member spandex plate being laminated as an upper layer on a polypropylene plate as an underlayer.

Preferably, the discharge pressure of the ultrahigh pressure pump corresponds to the cutting energy required to cut the spandex plate, and when the same ultrahigh pressure fluid pipe and a single ultrahigh pressure fluid nozzle firmly fixed to the pipe are used, the discharge pressure is set to 196 MPa; and, the discharge pressure of the ultrahigh pressure pump corresponds to the cutting energy required to cut the polypropylene sheet, when the same ultrahigh pressure fluid conduit and a single ultrahigh pressure fluid nozzle firmly fixed to the pipeline are used, The discharge pressure was set to 294 MPa.

Preferably, the high pressure fluid is ejected from a nozzle having an orifice diameter of 0.003 inches, and the spandex sheet is cut while the discharge pressure of the ultrahigh pressure pump remains fixed.

Preferably, the high pressure fluid is ejected from a nozzle having an orifice diameter of 0.008 inches, and the polypropylene sheet is cut while the discharge pressure of the ultrahigh pressure pump remains fixed.

Preferably, the high-pressure liquid jet which is first discharged from one nozzle cuts the spandex sheet, and then the high-pressure liquid jet which flows out from the other nozzle cuts the polypropylene sheet; or firstly, the high-pressure fluid is injected from one nozzle to simultaneously cut the spandex board and the polypropylene. board.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

Figure 1 is a side elevational view of a cutting apparatus in accordance with an embodiment of the present invention, with a portion omitted;

Figure 2 is a front elevational view of the cutting apparatus of the embodiment of the present invention, with a portion omitted;

Figure 3 (A) is a side view showing a state in which only the upper layer of the thin plate member is cut;

Fig. 3(B) is a side view showing a state in which both the upper layer and the lower layer of the thin plate member are cut.

detailed description

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings, a detailed description

As shown in Fig. 1, the cutting device is composed of an ignition blasting short section, a gas generator, a pressure releaser, an anchor short joint assembly, a chemical cartridge, a cutting head, a heavy plug and a centralizer, and the valve frame 9 is fixed at one end. At one end of the robot arm 8 of a rotating robot that is not shown. At the other end of the valve frame 9, as shown in Fig. 2, the

switching valves

2 and 3 are fixed by the fixed

arms

10 and 11, respectively. One ends of the

switching valves

2 and 3 are connected to the

actuators

14 and 15, and the other ends are connected to one ends of the

nozzle tubes

16 and 17, respectively. The apertures of each of the

nozzle tubes

16 and 17 connected to one side of the

switching valves

2 and 3 are formed in a standard size.

In contrast, a nozzle 12 providing an orifice having a diameter of 3/1000 inch and a nozzle 13 providing an orifice having a diameter of 8/1000 inch are fixed to the other ends of the

nozzle tubes

16 and 17, respectively.

To the

switching valves

2 and 3, an ultrahigh pressure fluid line 18 is connected at the base end to the discharge side of the ultrahigh pressure pump not shown. The discharge pressure of the ultrahigh pressure pump not shown is kept constant.

First, the igniter is used to detonate the cutter. After the solid gunpowder is ignited, pressure is generated to force the piston in the anchor nipple to move downward. Under the cooperation of the wedge body, the cutting device is fixed. As the gunpowder burns, the pressure inside the tool continues to rise and is crushed. The sealing cap on the chemical cartridge forces the chemical agent to contact with the catalyst, and the chemical agent reacts under the action of the catalyst, causing the temperature and pressure to suddenly increase, causing the piston in the cutting head to move downward and fall into the heavy plug, exposing all the diameters. To the small hole, the chemical in the reaction is violently sprayed to the nozzle 12;

Then, the tip end of the nozzle 12 is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot 8 not shown.

Then, when compressed air is supplied to the actuator 14 as indicated by the arrow 19, the on-off valve 2 is opened. The high pressure water stream then flows through the ultrahigh pressure fluid conduit 18 as indicated by

arrows

21, 22, 23 and 24 and is then mixed at high velocity with the chemical in the orifice formed by the nozzle 12, as indicated by arrow 26, as indicated by arrow 25. Pass through the nozzle tube 16.

Thereafter, in this manner, as soon as the desired cutting work is completed, the compressed air supplied to the actuator 14 is stopped. Therefore, the on-off valve 2 is closed, and the injection of high-pressure water is stopped.

Thereafter, the tip end of the nozzle 13 is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot 8 not shown.

Next, when the compressed air is supplied to the actuator 15 as indicated by the arrow 19a, the opening and closing valve 3 is opened. Then, the high pressure water stream flows through the ultrahigh pressure fluid conduit 18 as indicated by

arrows

21, 22, 23 and 24, and then exits after the orifice formed by the nozzle 13 is mixed with the chemical, as indicated by arrow 30, as indicated by arrow 28. Pass through the nozzle tube 17.

In this way, as soon as the required cutting work is completed, the compressed air supplied to the actuator 15 is stopped. Therefore, the on-off valve 3 is closed, and the injection of high-pressure water is stopped.

In the present embodiment, the workpiece 20 to be cut is a sheet material of a different material in which a spandex sheet 27 is laminated as an upper layer on a polypropylene sheet 29 as an underlayer. Here, the discharge pressure of the ultra-high pressure pump corresponds to the cutting energy required to cut the spandex plate, when the same ultra-high pressure fluid pipe is used and firmly fixed The single ultra-high pressure fluid nozzle there is set to 196 MPa; on the contrary, the discharge pressure required for the cutting of the polypropylene plate is 294 MPa.

In this case, in the above-described example consistent with the present invention, the high-pressure water is ejected from the nozzle 12 by the orifice having a diameter of 3/1000 inch. When the discharge pressure of the ultrahigh-pressure pump not shown remains fixed, therefore, The spandex plate 27 which can be cut with a small cutting energy can be cut as shown in Fig. 3(a).

Further, the high-pressure water is ejected from the nozzle 13 by the orifice having a diameter of 8/1000 inch. When the discharge pressure of the ultrahigh-pressure pump not shown is kept fixed, the polypropylene sheet 29 which can be cut with a large cutting can be cut, As shown in Figure 3 (b).

Alternatively, only the spandex plate 27 may be first cut by a jet of high pressure water flowing from the nozzle 12, and then the polypropylene sheet 29 may be cut by a jet of high pressure water flowing from the nozzle 13. In addition, high-pressure water can be first ejected from the nozzle 13, so that the spandex plate 27 and the polypropylene plate 29 can be simultaneously cut.

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims

A combined cutting device using high pressure liquid jet and chemical method, characterized in that it comprises a chemical cutting device and a high pressure liquid jet cutting device, wherein the chemical cutting device comprises an ignition explosion short section, a gas generator, a pressure release device, The utility model comprises an anchor short section assembly, a chemical cartridge, a cutting head, a heavy plug and a centralizer, and the high pressure liquid jet cutting device comprises a valve frame (9), a fixed arm (10, 11), an on-off valve (2, 3) Actuator (14, 15), nozzle (12, 13) and nozzle tube (16, 17), wherein one end of the valve frame (9) is fixed to one end of a robot arm (8) of the rotary robot, The other end of the valve frame (9) is fixed to the on-off valve (2, 3) by a fixed arm (10, 11), one end of which is connected to the actuator (14, 15), and the other end is respectively The nozzle tubes (16, 17) are connected, and the diameter of the side of each nozzle tube (16, 17) connected to the switching valves (2, 3) is a standard size.
A combined cutting apparatus using a high pressure liquid jet and chemical method according to claim 1, wherein said nozzle (12) has an orifice diameter of 0.003 inches and said nozzle (13) has a orifice diameter of 0.008 inches. The nozzles (12, 13) are respectively fixed to the other ends of the nozzle tubes (16, 17).
A combined cutting apparatus using high pressure liquid jet and chemical method according to claim 1, wherein said switching valve (2, 3) is connected to a base end of an ultrahigh pressure fluid conduit (18), and thereby Connect to the discharge side of an ultra high pressure pump.
A combined cutting apparatus using a high pressure liquid jet and a chemical method according to claim 3, wherein the discharge pressure of said ultrahigh pressure pump is kept constant.
A method of cutting by a combined cutting apparatus using high pressure liquid jet and chemical methods according to claims 1-4, comprising the steps of:

(1) The igniter is used to detonate the cutter. After the solid gunpowder is ignited, pressure is generated to force the piston in the anchor nipple to move downward. Under the cooperation of the wedge body, the cutting device is fixed. As the gunpowder burns, the pressure in the tool continues. Rising and crushing the sealing cap on the chemical cartridge, forcing the chemical agent to contact with the catalyst, and the chemical reaction of the chemical agent under the action of the catalyst causes the temperature and pressure to suddenly increase, causing the piston in the cutting head to move downward and fall into the heavy blockage. Exposing all radial pores so that the chemical in the reaction is violently sprayed to the nozzle (12);

(2) the tip end of the nozzle (12) is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot (8);

(3) When the compressed air is supplied to the actuator (14) in a certain direction, the on-off valve (2) is opened, and then the high-pressure water flows through the ultra-high pressure fluid pipe (18) in a certain direction, and the hole formed in the nozzle (12) The mouth is mixed with the chemical agent at a high speed, and is sprayed in a certain direction and passed through the nozzle tube (16);

(4) According to the above steps (1)-(3), once the required cutting work is completed, the compressed air supplied to the actuator (14) is stopped, the switching valve (2) is closed, and the injection of the high pressure water is stopped;

(5) the tip end of the nozzle (13) is exposed to the cutting portion of the workpiece to be cut by moving the robot arm of the rotating robot (8);

(6) When the compressed air is supplied to the actuator (15) in a certain direction, the on-off valve (3) is opened, and the high-pressure water flows through the ultra-high pressure fluid pipe (18) in a certain direction, and the orifice formed at the nozzle (13) After the chemical is mixed, it is injected and passes through the nozzle tube (17) in a certain direction;

(7) According to the above steps (5) - (6), when the required cutting work is completed, the compressed air supplied to the actuator (15) is stopped, so that the switching valve (3) is closed, and the injection of the high pressure water is stopped.
A method of cutting according to claim 5, wherein the cut workpiece (20) is a thin plate member of a different material, and the thin plate member spandex plate (27) is laminated as a layer on the lower layer. On the polypropylene plate (29).
The method of cutting according to claim 5, wherein the discharge pressure of the ultrahigh pressure pump corresponds to the cutting energy required for cutting the spandex plate, when the same ultrahigh pressure fluid pipe is used and firmly fixed on the pipe. In the case of a single ultra-high pressure fluid nozzle, the discharge pressure is set to 196 MPa; and the discharge pressure of the ultra-high pressure pump corresponds to the cutting energy required to cut the polypropylene sheet, when the same ultra-high pressure fluid pipe is used and firmly fixed The discharge pressure was set at 294 MPa for a single ultra-high pressure fluid nozzle on the pipe.
A method of cutting according to claim 5, wherein said high pressure fluid is ejected from a nozzle (12) having an orifice diameter of 0.003 inches, and the spandex sheet is cut when the discharge pressure of the ultrahigh pressure pump is kept constant ( 27).
A method of cutting according to claim 5, wherein said high pressure fluid is ejected from a nozzle (13) having an orifice diameter of 0.008 inches, and the polypropylene sheet is cut when the discharge pressure of the ultrahigh pressure pump is kept constant. (29).
A method of cutting according to claim 5, characterized in that the high-pressure liquid jet which is first discharged from the nozzle (12) cuts the spandex plate (27), and is then cut by the high-pressure liquid jet flowing from the nozzle (13). Plate (29); or firstly ejecting high pressure fluid from nozzle (13) to simultaneously cut spandex plate (27) and polypropylene plate (29).