CN113714550A - High-precision cutting process of metal corrugated pipe - Google Patents

High-precision cutting process of metal corrugated pipe Download PDF

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Publication number
CN113714550A
CN113714550A CN202110950497.3A CN202110950497A CN113714550A CN 113714550 A CN113714550 A CN 113714550A CN 202110950497 A CN202110950497 A CN 202110950497A CN 113714550 A CN113714550 A CN 113714550A
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China
Prior art keywords
corrugated pipe
metal corrugated
cylinder
positioning cylinder
pull rod
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CN202110950497.3A
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CN113714550B (en
Inventor
严潇斌
陈佳槟
严建华
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Zhejiang Boji Engineering Materials Co ltd
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Zhejiang Boji Engineering Materials Co ltd
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Priority to CN202110950497.3A priority Critical patent/CN113714550B/en
Publication of CN113714550A publication Critical patent/CN113714550A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention provides a high-precision cutting process of a metal corrugated pipe, and belongs to the technical field of machining. It has solved prior art and has had the poor problem of stability. The high-precision cutting process of the metal corrugated pipe comprises the following steps: A. preparing: cleaning the metal corrugated pipe to be cut, and removing impurities and oil stains on the metal corrugated pipe; B. clamping: two sides of the metal corrugated pipe close to the position to be cut are respectively a clamping part I and a clamping part II, the clamping part I and the clamping part II are clamped, and the cleaned metal corrugated pipe is positioned; C. heating, supporting and positioning: the support plate is abutted against the lower part of the part to be cut of the metal corrugated pipe, and the support plate simultaneously heats the metal corrugated pipe to 150-200 DEGOC; D. cutting machineCutting; E. and (5) feeding. The high-precision cutting process of the metal corrugated pipe is high in stability and precision.

Description

High-precision cutting process of metal corrugated pipe
Technical Field
The invention belongs to the technical field of machining, and relates to a high-precision cutting process of a metal corrugated pipe.
Background
The metal corrugated pipe is a metal pipe with a wave-shaped pipe wall. Common metal corrugated pipes include carbon steel, stainless steel, aluminum and the like.
The metal corrugated pipe is mainly used for non-concentric axial transmission with small bending radius, irregular turning, stretching, thermal deformation absorption of a pipeline and the like, or connection between the pipeline and the pipeline or connection between the pipeline and equipment in occasions where fixed elbows are inconvenient to install.
In the practical process, the metal corrugated pipe is often cut off according to the practical use requirement, so that the metal corrugated pipe with the set length is used. The existing cutting mode is mainly to cut off the corrugated metal pipe by adopting a grinding wheel device, and the cutting part of the corrugated metal pipe can be subjected to transition deformation due to overlarge extrusion force in the cutting process, so that the normal use of the corrugated metal pipe is influenced.
Its publication of chinese patent CN109894665A discloses a corrugated metal pipe cutting device and its use method, relates to corrugated metal pipe processing technology field, including the workstation, be equipped with the clamping device with the corrugated metal pipe centre gripping and the cutting body with the corrugated metal pipe cutting on the workstation, clamping device's left side still is equipped with carries out refrigerated cooling device to the corrugated metal pipe, cooling device includes the cooling duct.
It can be seen that, above-mentioned patent is through setting up automatic feeding, clamping device and cutting body, realizes autoloading, centre gripping and cutting, and the process is stable, has realized automated operation, improves cutting efficiency, through setting up cooling device for wind blows to the corrugated metal pipe in the through-hole on the cooling channel, realizes the cooling, when making the corrugated metal pipe cutting, has reduced the deformation that the corrugated metal pipe terminal surface produced when the cutting, thereby has improved the quality of the corrugated metal pipe terminal surface after the cutting.
However, it only clamps one end of the metal corrugated pipe, and the other part which is not clamped may shake during the cutting process, which may also cause the problem of irregular cut.
Disclosure of Invention
A first object of the present invention is to provide a high-precision cutting process for a metal bellows, which has high processing precision and is easy to implement, in view of the above-mentioned problems of the prior art.
A second object of the present invention is to provide a clamping device for use in the above cutting process.
The first object of the present invention can be achieved by the following technical solutions:
a high-precision cutting process of a metal corrugated pipe is characterized by comprising the following steps:
A. preparing: cleaning the metal corrugated pipe to be cut, and removing impurities and oil stains on the metal corrugated pipe;
B. clamping: two sides of the metal corrugated pipe close to the position to be cut are respectively a clamping part I and a clamping part II, the clamping part I and the clamping part II are clamped, and the cleaned metal corrugated pipe is positioned;
C. heating, supporting and positioning: the support plate is abutted against the lower part of the part to be cut of the metal corrugated pipe, and the support plate simultaneously heats the metal corrugated pipe to 150-200 DEGOC；
D. Cutting: the cutting device is positioned at the upper part of the supporting plate, and moves downwards to perform stable cutting on the cutting part of the metal corrugated pipe;
E. feeding: after the metal corrugated pipe is cut, the first clamping part and the second clamping part are loosened, the corrugated pipe section is ejected out after the metal corrugated pipe is cut by continuous conveying, and the next part to be cut of the metal corrugated pipe moves to the upper part of the supporting plate.
The high-precision cutting process for the metal corrugated pipe creatively adopts the first clamping part and the second clamping part to clamp two ends of the part to be cut of the metal corrugated pipe, and simultaneously supports the lower part of the part to be cut of the metal corrugated pipe through the supporting plate.
The metal corrugated pipe is stably tensioned through the first clamping part and the second clamping part, and the cut metal corrugated pipe is supported through the supporting plate. The structure finally ensures that the cutting device stably cuts the metal corrugated pipe, and the metal corrugated pipe cannot be subjected to transition displacement in the cutting process, so that the metal corrugated pipe is cut off with high precision.
Of course, the supporting plate can not only support the part to be cut of the metal corrugated pipe, but also properly heat the cut part of the metal corrugated pipe, and the heated metal corrugated pipe can be stably cut off.
After the metal corrugated pipe is cut, the first clamping part and the second clamping part are loosened, and the metal corrugated pipe is conveyed and fed, so that the cut metal corrugated pipe is pushed out. Because the supporting plate is arranged between the first clamping part and the second clamping part, the metal corrugated pipe cannot sag excessively, and the metal corrugated pipe is ensured to translate stably in the device.
The second object of the present invention can be achieved by the following technical solutions:
the clamping device comprises a rack and is characterized by further comprising a first positioning cylinder, a first necking mechanism, a second positioning cylinder, a second necking mechanism and an unlocking mechanism, wherein the first positioning cylinder and the second positioning cylinder are fixedly connected to two ends of the rack respectively, the first positioning cylinder and the second positioning cylinder are opposite, the first necking mechanism is sleeved on the first positioning cylinder, the first necking mechanism has the trend of reducing the inner diameter of the first positioning cylinder, the second necking mechanism is sleeved on the second positioning cylinder, the second necking mechanism has the trend of reducing the inner diameter of the second positioning cylinder, and the unlocking mechanism can enable the first necking mechanism to be separated from the first positioning cylinder and the second necking mechanism to be separated from the second positioning cylinder.
The clamping device creatively arranges a first positioning cylinder and a second positioning cylinder at two ends of the frame respectively, and clamps and positions two ends of the metal corrugated pipe through the first positioning cylinder and the second positioning cylinder.
The first positioning cylinder and the first necking mechanism form the first clamping part, and the second positioning cylinder and the second necking mechanism form the second clamping part.
The first necking mechanism has the trend of reducing the inner diameter of the first positioning cylinder, the second necking mechanism has the trend of reducing the inner diameter of the second positioning cylinder, and finally the first positioning cylinder is sleeved at one end of the metal corrugated pipe and stably locked and connected with the metal corrugated pipe, and the second positioning cylinder is sleeved at the other end of the metal corrugated pipe and stably locked and connected with the metal corrugated pipe.
Of course, both the first positioning cylinder and the second positioning cylinder have the tendency to lock and connect the metal bellows therein in the initial state. When the unlocking is needed, the unlocking is realized through the shell of the unlocking mechanism.
When the first positioning cylinder and the metal corrugated pipe are loosened and the second positioning cylinder and the metal corrugated pipe are loosened, the metal corrugated pipe can smoothly move in the device under the action of external force.
The purpose of moving the metal corrugated pipe is to make the cut metal corrugated pipe be ejected by the metal corrugated pipe to be priced. Meanwhile, the metal corrugated pipe to be processed enters the cutting position of the device again to wait for the next cutting operation.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the first positioning cylinder comprises a first cylindrical cylinder body, the inner end of the first cylindrical cylinder body is a connecting end fixedly connected with the rack, the first cylindrical cylinder body is provided with a plurality of notches extending from the outer end to the inner end of the first cylindrical cylinder body, the notches are circumferentially and uniformly distributed on the first cylindrical cylinder body, and the outer end of the first cylindrical cylinder body between every two adjacent notches forms a first petal-shaped elastic pressing sheet.
The elastic pressing sheets on the first cylinder body have certain elasticity, after the elastic pressing sheets are subjected to the action of the necking mechanism, the elastic pressing sheets are extruded to generate corresponding deformation, and after the elastic pressing sheets are synchronously compressed, the inner diameter of the port of the first cylinder body is reduced, so that the metal corrugated pipe positioned in the first cylinder body is stably locked and connected.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the necking mechanism I comprises a pushing sleeve I and a spring I, the pushing sleeve I and the spring I are both sleeved on the cylinder I, two ends of the spring I respectively act on the rack and the pushing sleeve I, and the pushing sleeve I has the tendency of pushing the elastic pressing sheet I under the elastic force of the spring I.
The first pushing sleeve has an outward moving trend under the elastic force of the first spring, and the first pushing sleeve is moved outwards to stably extrude the first elastic pressing sheet, so that the first elastic pressing sheet is stably deformed after being extruded.
Certainly, the outer side of the first elastic pressing piece is an inclined plane, and when the pushing sleeve gradually moves from the bottommost position to the highest position of the first elastic pressing piece, the first elastic pressing piece can be stably extruded to deform, so that the inner diameter of the first cylinder body is ensured to be reduced.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the second positioning cylinder comprises a second cylindrical cylinder body, the inner end of the second cylindrical cylinder body is a connecting end fixedly connected with the rack, the second cylindrical cylinder body is provided with a plurality of notches extending from the outer end to the inner end of the second cylindrical cylinder body, the notches are circumferentially and uniformly distributed on the second cylindrical cylinder body, and the outer end of the second cylindrical cylinder body between every two adjacent notches forms a second petal-shaped elastic pressing sheet.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the second necking mechanism comprises a second pushing sleeve and a second spring, the second pushing sleeve and the second spring are both sleeved on the second barrel, two ends of the second spring respectively act on the rack and the second pushing sleeve, and the second pushing sleeve has the tendency of pushing the second elastic pressing sheet under the elastic force of the second spring.
The second positioning cylinder and the first positioning cylinder have the same structure and the same principle, and the second necking mechanism and the first necking mechanism have the same structure and the same principle. Therefore, the functions and effects of the second positioning barrel and the second necking mechanism are not repeated in the specification.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the unlocking mechanism comprises a first pull rod and a first pressing sleeve, the middle of the first pull rod is arranged on the rack in a penetrating mode, the first pressing sleeve is sleeved on the first barrel, the middle of the first pull rod is arranged on the rack in a penetrating mode, the outer end of the first pull rod is connected with the first pressing sleeve, the rack is further connected with a first air cylinder, and the first air cylinder is connected with the inner end of the first pull rod.
After the first air cylinder acts, the first pressing sleeve can be pulled through the first connecting rod, and the first pressing sleeve abuts against the first pushing sleeve. Therefore, after the pressing sleeve drives the first pushing sleeve to be far away from the first elastic pressing sheet, the inner diameter of the first positioning barrel recovers to be enlarged again after the first elastic pressing sheet resets. At the moment, the metal corrugated pipe and the first positioning cylinder are in an unlocked connection state.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the rack is provided with a first cylindrical guide cylinder, and the middle part of the first pull rod penetrates through the first cylindrical guide cylinder.
The contact area between the connecting rod and the rack can be increased under the action of the first guide cylinder, and the smooth and stable left-right movement of the connecting rod is ensured.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the unlocking mechanism further comprises a second pull rod and a second pressing sleeve, the middle of the second pull rod is arranged on the rack in a penetrating mode, the second pressing sleeve is arranged on the second barrel body in a penetrating mode, the middle of the second pull rod is arranged on the rack in a penetrating mode, the outer end of the second pull rod is connected with the second pressing sleeve, a second air cylinder is connected to the rack, and the second air cylinder is connected with the inner end of the second pull rod.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the rack is provided with a second cylindrical guide cylinder, and the middle part of the second pull rod penetrates through the second guide cylinder.
The second cylinder, the second pull rod and the second pressing sleeve can finally control the second pushing sleeve to be far away from or close to the second elastic pressing sheet, and finally the inner diameter of the second positioning cylinder is changed, so that the metal corrugated pipe and the second positioning cylinder are in a connected or unlocked state.
In the clamping device for the high-precision cutting process of the metal corrugated pipe, the rack between the first positioning cylinder and the second positioning cylinder is fixedly connected with the supporting plate, the upper part of the supporting plate is a connecting part matched with the side wall of the metal corrugated pipe, the middle part of the connecting part is provided with a concave tool withdrawal groove, two sides of the tool withdrawal groove are provided with concave connecting holes, and an electric heating rod is arranged in each connecting hole.
The support plate has two functions:
firstly, supporting the cutting position of the metal corrugated pipe to avoid transition downward movement of the metal corrugated pipe in the cutting process;
and the supporting plate is positioned between the first positioning cylinder and the second positioning cylinder, and when the metal corrugated pipe passes through the device, the metal corrugated pipe can stably move from the first positioning cylinder to the second positioning cylinder.
Compared with the prior art, the high-precision cutting process of the metal corrugated pipe has the advantages that the cutting part of the metal corrugated pipe is supported by the supporting plate, and the two sides of the cutting part of the metal corrugated pipe are clamped and positioned by the clamping part I and the clamping part II respectively, so that the cutting part is stable when the metal corrugated pipe is cut, and the cutting precision is high.
Simultaneously, the corrugated metal pipe can be smooth and easy pass through in this device among the cutting process, and corrugated metal pipe cutting degree of automation is high, and cutting efficiency is also than higher.
Drawings
Fig. 1 is a schematic sectional structure view of a clamping device in a high-precision cutting process of a metal corrugated pipe.
Fig. 2 is a schematic perspective view of a first guide cylinder in the clamping device for the high-precision cutting process of the metal corrugated pipe.
In the figure, 1, a frame; 1a, a first guide cylinder; 1b, a second guide cylinder; 2. a first positioning cylinder; 2a, a first cylinder; 2a1, elastic pressing sheet I; 3. pushing a sleeve I; 4. a first spring; 5. a second positioning cylinder; 5a, a second cylinder body; 5a1 and a second elastic pressing sheet; 6. a second pushing sleeve; 7. a second spring; 8. a first pull rod; 9. pressing and sleeving a first sleeve; 10. a first cylinder; 11. a second pull rod; 12. pressing a sleeve II; 13. a support plate; 13a, a connecting part; 13b, a tool withdrawal groove; 14. an electrical heating rod; 15. And a second air cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
The high-precision cutting process of the metal corrugated pipe comprises the following steps:
A. preparing: cleaning the metal corrugated pipe to be cut, and removing impurities and oil stains on the metal corrugated pipe;
B. clamping: two sides of the metal corrugated pipe close to the position to be cut are respectively a clamping part I and a clamping part II, the clamping part I and the clamping part II are clamped, and the cleaned metal corrugated pipe is positioned;
C. heating, supporting and positioning: the support plate is abutted against the lower part of the part to be cut of the metal corrugated pipe, and the support plate simultaneously heats the metal corrugated pipe to 150-200 DEGOC；
D. Cutting: the cutting device is positioned at the upper part of the supporting plate, and moves downwards to perform stable cutting on the cutting part of the metal corrugated pipe;
E. feeding: after the metal corrugated pipe is cut, the first clamping part and the second clamping part are loosened, the corrugated pipe section is ejected out after the metal corrugated pipe is cut by continuous conveying, and the next part to be cut of the metal corrugated pipe moves to the upper part of the supporting plate.
The cleaned metal corrugated pipe is clamped between the first clamping part and the second clamping part, and the supporting plate is abutted against the cutting part of the metal corrugated pipe. During the cutting device moves down and cuts the metal corrugated pipe, the cutting part of the metal corrugated pipe is supported by the supporting plate, and two ends of the cutting part of the metal corrugated pipe are clamped by the first clamping part and the second clamping part respectively, so that the cut metal corrugated pipe is accurate in cutting position and neat in cut.
After the cutting operation is finished, the first clamping part and the second clamping part are loosened, the metal corrugated pipe which is continuously moved can push out the cut metal corrugated pipe until the metal corrugated pipe to be cut is moved to the cutting position again.
As shown in fig. 1 and 2, the clamping device for the high-precision cutting process of the metal corrugated pipe comprises a frame 1, a first positioning cylinder 2, a first necking mechanism, a second positioning cylinder 5, a second necking mechanism and an unlocking mechanism, wherein the first positioning cylinder 2 and the second positioning cylinder 5 are fixedly connected to two ends of the frame 1 respectively, the first positioning cylinder 2 is opposite to the second positioning cylinder 5, the first necking mechanism is sleeved on the first positioning cylinder 2, the first necking mechanism has a tendency of reducing the inner diameter of the first positioning cylinder 2, the second necking mechanism is sleeved on the second positioning cylinder 5, the second necking mechanism has a tendency of reducing the inner diameter of the second positioning cylinder 5, and the unlocking mechanism can enable the first necking mechanism to be separated from the first positioning cylinder 2 and the second necking mechanism to be separated from the second positioning cylinder 5.
The positioning cylinder I2 comprises a cylindrical cylinder I2 a, the inner end of the cylinder I2 a is a connecting end fixedly connected with the rack 1, notches extending from the outer end to the inner end of the cylinder I2 a are formed in the cylinder I2 a, the number of the notches is a plurality of notches, the notches are circumferentially and uniformly distributed on the cylinder I2, and a petal-shaped elastic pressing piece I2 a1 is formed at the outer end of the cylinder I2 between every two adjacent notches.
The first necking mechanism comprises a first pushing sleeve 3 and a first spring 4, the first pushing sleeve 3 and the first spring 4 are both sleeved on the first barrel body 2a, two ends of the first spring 4 respectively act on the rack 1 and the first pushing sleeve 3, and the first pushing sleeve 3 has the tendency of pushing the elastic pressing sheet 2a1 under the elastic force of the first spring 4.
The second positioning cylinder 5 comprises a second cylindrical cylinder 5a, the inner end of the second cylindrical cylinder 5a is a connecting end fixedly connected with the rack 1, notches extending from the outer end to the inner end of the second cylindrical cylinder 5a are formed in the second cylindrical cylinder 5a, the number of the notches is a plurality, the notches are circumferentially and uniformly distributed in the second cylindrical cylinder 5a, and a second flap-shaped elastic pressing piece 5a1 is formed at the outer end of the second cylindrical cylinder 5a between every two adjacent notches.
The second necking mechanism comprises a second pushing sleeve 6 and a second spring 7, the second pushing sleeve 6 and the second spring 7 are both sleeved on the second barrel body 5a, two ends of the second spring 7 respectively act on the rack 1 and the second pushing sleeve 6, and the second pushing sleeve 6 has the tendency of pushing the second elastic pressing sheet 5a1 under the action of the elastic force of the second spring 7.
The unlocking mechanism comprises a first pull rod 8 and a first pressing sleeve 9, the middle of the first pull rod 8 is arranged on the rack 1 in a penetrating mode, the first pressing sleeve 9 is sleeved on the first barrel 2a, the middle of the first pull rod 8 is arranged on the rack 1 in a penetrating mode, the outer end of the first pull rod 8 is connected with the first pressing sleeve 9, the rack 1 is further connected with a first air cylinder 10, and the first air cylinder 10 is connected with the inner end of the first pull rod 8.
The machine frame 1 is provided with a cylindrical guide cylinder I1 a, and the middle part of the pull rod I8 penetrates through the guide cylinder I1 a.
The unlocking mechanism further comprises a second pull rod 11 and a second pressing sleeve 12, the middle of the second pull rod 11 is arranged on the rack 1 in a penetrating mode, the second pressing sleeve 12 is sleeved on the second barrel body 5a, the middle of the second pull rod 11 is arranged on the rack 1 in a penetrating mode, the outer end of the second pull rod 11 is connected with the second pressing sleeve 12, the rack 1 is further connected with a second air cylinder 15, and the second air cylinder 15 is connected with the inner end of the second pull rod 11.
The frame 1 is provided with a cylindrical guide cylinder II 1b, and the middle part of the pull rod II 11 is arranged in the guide cylinder II 1b in a penetrating way.
A support plate 13 is fixedly connected to the frame 1 between the first positioning cylinder 2 and the second positioning cylinder 5, a connecting portion matched with the side wall of the metal corrugated pipe is arranged at the upper portion of the support plate 13, a concave tool withdrawal groove 13b is formed in the middle of the connecting portion, concave connecting holes are formed in two sides of the tool withdrawal groove 13b, and an electric heating rod 14 is arranged in each connecting hole.
The clamping device creatively arranges a first positioning cylinder and a second positioning cylinder at two ends of the frame respectively, and clamps and positions two ends of the metal corrugated pipe through the first positioning cylinder and the second positioning cylinder.
The first positioning cylinder and the first necking mechanism form the first clamping part, and the second positioning cylinder and the second necking mechanism form the second clamping part.
The first necking mechanism has the trend of reducing the inner diameter of the first positioning cylinder, the second necking mechanism has the trend of reducing the inner diameter of the second positioning cylinder, and finally the first positioning cylinder is sleeved at one end of the metal corrugated pipe and stably locked and connected with the metal corrugated pipe, and the second positioning cylinder is sleeved at the other end of the metal corrugated pipe and stably locked and connected with the metal corrugated pipe.
Of course, both the first positioning cylinder and the second positioning cylinder have the tendency to lock and connect the metal bellows therein in the initial state. When the unlocking is needed, the unlocking is realized through the shell of the unlocking mechanism.
When the first positioning cylinder and the metal corrugated pipe are loosened and the second positioning cylinder and the metal corrugated pipe are loosened, the metal corrugated pipe can smoothly move in the device under the action of external force.
The purpose of moving the metal corrugated pipe is to make the cut metal corrugated pipe be ejected by the metal corrugated pipe to be priced. Meanwhile, the metal corrugated pipe to be processed enters the cutting position of the device again to wait for the next cutting operation.
The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims (10)

1. A high-precision cutting process of a metal corrugated pipe is characterized by comprising the following steps:
A. preparing: cleaning the metal corrugated pipe to be cut, and removing impurities and oil stains on the metal corrugated pipe;
B. clamping: two sides of the metal corrugated pipe close to the position to be cut are respectively a clamping part I and a clamping part II, the clamping part I and the clamping part II are clamped, and the cleaned metal corrugated pipe is positioned;
C. heating, supporting and positioning: the support plate is abutted against the lower part of the part to be cut of the metal corrugated pipe, and the support plate simultaneously heats the metal corrugated pipe to 150-200 DEGOC；
D. Cutting: the cutting device is positioned at the upper part of the supporting plate, and moves downwards to perform stable cutting on the cutting part of the metal corrugated pipe;
E. feeding: after the metal corrugated pipe is cut, the first clamping part and the second clamping part are loosened, the corrugated pipe section is ejected out after the metal corrugated pipe is cut by continuous conveying, and the next part to be cut of the metal corrugated pipe moves to the upper part of the supporting plate.
2. A high-precision cutting process of a metal corrugated pipe as claimed in claim 1, wherein the clamping device comprises a frame, and is characterized by further comprising a first positioning cylinder, a first necking mechanism, a second positioning cylinder, a second necking mechanism and an unlocking mechanism, wherein the first positioning cylinder and the second positioning cylinder are fixedly connected to two ends of the frame respectively, the first positioning cylinder and the second positioning cylinder are opposite, the first necking mechanism is sleeved on the first positioning cylinder, the first necking mechanism has a tendency of reducing the inner diameter of the first positioning cylinder, the second necking mechanism is sleeved on the second positioning cylinder, the second necking mechanism has a tendency of reducing the inner diameter of the second positioning cylinder, and the unlocking mechanism can separate the first necking mechanism from the first positioning cylinder and the second necking mechanism from the second positioning cylinder.
3. A high-precision cutting process for a metal corrugated pipe as claimed in claim 2, wherein the first positioning cylinder comprises a first cylindrical body, an inner end of the first cylindrical body is a connecting end for fixedly connecting with the rack, the first cylindrical body is provided with a plurality of notches extending from an outer end to an inner end of the first cylindrical body, the plurality of notches are circumferentially and uniformly distributed on the first cylindrical body, and an outer end of the first cylindrical body between two adjacent notches forms a first flap-shaped elastic pressing sheet.
4. A high-precision cutting process of a metal corrugated pipe as claimed in claim 3, wherein the first necking mechanism comprises a first pushing sleeve and a first spring, the first pushing sleeve and the first spring are sleeved on the first barrel, two ends of the first spring respectively act on the rack and the first pushing sleeve, and the first pushing sleeve has a tendency of pushing the first elastic pressing sheet under the elastic force of the first spring.
5. A high-precision cutting process for a metal corrugated pipe as claimed in claim 4, wherein the second positioning cylinder comprises a second cylindrical cylinder body, the inner end of the second cylindrical cylinder body is a connecting end for fixedly connecting with the rack, the second cylindrical cylinder body is provided with a plurality of notches extending from the outer end to the inner end, the plurality of notches are circumferentially and uniformly distributed on the second cylindrical cylinder body, and the outer end of the second cylindrical cylinder body between two adjacent notches forms a second flap-shaped elastic pressing sheet.
6. A high-precision cutting process for a metal corrugated pipe as claimed in claim 5, wherein the second necking mechanism comprises a second pushing sleeve and a second spring, the second pushing sleeve and the second spring are both sleeved on the second barrel, two ends of the second spring respectively act on the rack and the second pushing sleeve, and the second pushing sleeve has a tendency of pushing the second elastic pressing sheet under the elastic force of the second spring.
7. A high-precision cutting process for a metal corrugated pipe as claimed in claim 6, wherein the unlocking mechanism comprises a first pull rod and a first pressing sleeve, the middle of the first pull rod is arranged on the rack in a penetrating manner, the first pressing sleeve is sleeved on the first barrel, the middle of the first pull rod is arranged on the rack in a penetrating manner, the outer end of the first pull rod is connected with the first pressing sleeve, the rack is further connected with a first air cylinder, and the first air cylinder is connected with the inner end of the first pull rod.
8. A high-precision cutting process for a metal corrugated pipe as claimed in claim 7, wherein the rack is provided with a first cylindrical guide cylinder, and the middle part of the first pull rod penetrates through the first cylindrical guide cylinder.
9. A high-precision cutting process for a metal corrugated pipe as claimed in claim 8, wherein the unlocking mechanism further comprises a second pull rod and a second pressing sleeve, the middle of the second pull rod is arranged on the frame in a penetrating manner, the second pressing sleeve is arranged on the second cylinder body, the middle of the second pull rod is arranged on the frame in a penetrating manner, the outer end of the second pull rod is connected with the second pressing sleeve, the frame is further connected with a second air cylinder, and the second air cylinder is connected with the inner end of the second pull rod.
10. A high precision cutting process of a metal bellows according to claim 9, wherein the frame is provided with a second cylindrical guide tube, and the middle of the second pull rod is inserted into the second guide tube.
CN202110950497.3A 2021-08-18 2021-08-18 High-precision cutting process of metal corrugated pipe Active CN113714550B (en)

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CN210525264U (en) * 2019-09-19 2020-05-15 浙江焓盛氟塑料有限公司 High-pressure-resistance polytetrafluoroethylene corrugated pipe cutting device
CN210587407U (en) * 2019-08-22 2020-05-22 天津市汇亚塑业科技有限公司 Corrugated pipe cutting device
CN211438317U (en) * 2019-12-06 2020-09-08 云南管通公路材料有限公司 Cutting machine with waste collection function for corrugated pipe production
CN111687893A (en) * 2020-07-16 2020-09-22 江苏亿向金属科技有限公司 Cutting device for corrugated pipe
CN213730513U (en) * 2020-10-10 2021-07-20 常州市史美尔精密机械科技有限公司 Controllable type machine tool fixture of pressure
CN113172281A (en) * 2021-05-13 2021-07-27 江苏安全技术职业学院 Cutting equipment for machine-building design

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203817429U (en) * 2014-05-21 2014-09-10 温州富通管件制造有限公司 Elastic fixture of lathe
CN210587407U (en) * 2019-08-22 2020-05-22 天津市汇亚塑业科技有限公司 Corrugated pipe cutting device
CN210525264U (en) * 2019-09-19 2020-05-15 浙江焓盛氟塑料有限公司 High-pressure-resistance polytetrafluoroethylene corrugated pipe cutting device
CN211438317U (en) * 2019-12-06 2020-09-08 云南管通公路材料有限公司 Cutting machine with waste collection function for corrugated pipe production
CN111687893A (en) * 2020-07-16 2020-09-22 江苏亿向金属科技有限公司 Cutting device for corrugated pipe
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