CN113510604A - Surface polishing device for production of directly-buried insulating pipe - Google Patents

Surface polishing device for production of directly-buried insulating pipe Download PDF

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Publication number
CN113510604A
CN113510604A CN202110913954.1A CN202110913954A CN113510604A CN 113510604 A CN113510604 A CN 113510604A CN 202110913954 A CN202110913954 A CN 202110913954A CN 113510604 A CN113510604 A CN 113510604A
Authority
CN
China
Prior art keywords
polishing
positioning
buried heat
direct
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110913954.1A
Other languages
Chinese (zh)
Inventor
刘诚
张爱群
严志强
张声振
吴良坤
汤艳
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.)
Hefei Huafeng Heating & Ventilating Equipment Co ltd
Original Assignee
Hefei Huafeng Heating & Ventilating Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Huafeng Heating & Ventilating Equipment Co ltd filed Critical Hefei Huafeng Heating & Ventilating Equipment Co ltd
Priority to CN202110913954.1A priority Critical patent/CN113510604A/en
Publication of CN113510604A publication Critical patent/CN113510604A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • B24B29/06Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
    • B24B29/08Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction the cross-section being circular, e.g. tubes, wires, needles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/02Frames; Beds; Carriages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/04Headstocks; Working-spindles; Features relating thereto
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/067Work supports, e.g. adjustable steadies radially supporting workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/22Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/12Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like

Abstract

The invention discloses a surface polishing device for production of a directly-buried heat-insulating pipe, which comprises a base, two polishing mechanisms arranged on two sides of the base and a plurality of positioning mechanisms arranged between the two polishing mechanisms. The polishing mechanism comprises a driving mechanism, a mounting disc fixed with the output end of the driving mechanism and a polishing component circumferentially arranged on the mounting disc. The positioning mechanism comprises a mounting seat, an adjusting mechanism arranged on the mounting seat, and two positioning pieces arranged on the adjusting mechanism in a sliding way, wherein the two positioning pieces are arranged oppositely, and the direct-buried heat-insulating pipe passes through the two positioning pieces and is connected with the two positioning pieces in a rolling way. The directly-buried heat-insulating pipe is positioned and fixed through the positioning mechanism, and the pipe orifices on the two sides of the directly-buried heat-insulating pipe are polished by the two polishing mechanisms on the two sides respectively. The positioning mechanism is arranged to ensure that the direct-buried heat-insulating pipe can be accurately positioned to a specified polishing site, so that the polishing work is smoothly carried out.

Description

Surface polishing device for production of directly-buried insulating pipe
Technical Field
The invention relates to the technical field of production of a directly-buried insulating pipe, in particular to a surface polishing device for production of the directly-buried insulating pipe.
Background
The direct-buried heat-insulating pipe is widely used for liquid and gas conveying pipe networks, chemical pipeline heat-insulating engineering petroleum, chemical engineering, central heating and heating networks, central air-conditioning ventilation pipelines, municipal engineering and the like. The direct-buried heat-insulating pipe is a direct-buried prefabricated heat-insulating pipe with good heat-insulating property, safety, reliability and low construction cost. The problems of heat preservation, sliding lubrication and water prevention of the exposed pipe end of the prefabricated direct-buried heat preservation pipe for high-temperature heat transmission at 130-600 ℃ in urban centralized heat supply are effectively solved. The direct-buried heat preservation pipe adopts a direct-buried heat supply pipeline technology, and marks that the technical development of the Chinese heat supply pipeline has entered a new starting point.
In order to facilitate the connection between pipelines, the outer surface of the buried heat-insulating pipe orifice needs to be polished during production. The polished pipe orifice is smooth and easy to connect, so that the connection contact sealing effect is improved. The existing polishing device mainly adopts the fixed polishing device to polish the surface of the pipe orifice during polishing, and the direct-buried heat-insulating pipe needs to be continuously rotated in the polishing process, so that the polishing efficiency is low, the polishing is not uniform, and the labor cost is high. Meanwhile, the fixed difficulty of the direct-buried heat-insulating pipe is high during polishing, and the displacement phenomenon is easy to occur.
Disclosure of Invention
The invention aims to provide a surface polishing device for producing a directly-buried insulating pipe, which is used for solving the technical problems in the background technology.
The invention discloses a surface polishing device for producing a directly-buried heat-insulating pipe, which comprises a base, two polishing mechanisms arranged on two sides of the base and a plurality of positioning mechanisms arranged between the two polishing mechanisms, wherein the two polishing mechanisms are arranged on the two sides of the base;
the polishing mechanisms comprise driving mechanisms, mounting discs fixed with the output ends of the driving mechanisms and polishing assemblies circumferentially arranged on the mounting discs, and the two polishing mechanisms are respectively used for polishing pipe orifices on two sides of the directly-buried heat-insulating pipe;
the positioning mechanism comprises a mounting seat, an adjusting mechanism arranged on the mounting seat, and two positioning pieces arranged on the adjusting mechanism in a sliding way, wherein the two positioning pieces are arranged oppositely, and the direct-buried heat-insulating pipe passes through the two positioning pieces and is connected with the two positioning pieces in a rolling way.
In a preferred embodiment, a collecting cylinder which is transversely installed is arranged on the side, close to the positioning mechanism, of the installation plate, the polishing component extends into the collecting cylinder, a pipe orifice of the direct-buried heat preservation pipe extends into the collecting cylinder during polishing, and the collecting cylinder is detachably fixed with the base.
In a preferred embodiment, the bottom of the collecting cylinder is provided with an insertion block, the base is provided with a supporting seat with a slot, and the insertion block is detachably inserted into the slot.
In a preferred embodiment, the polishing assembly is driven to rotate by the driving mechanism, the polishing assembly comprises a plurality of polishing rods, a plurality of polishing protrusions are arranged on the polishing rods, and the polishing rods are fixed with the mounting disc in a sliding mode.
In a preferred embodiment, a cavity is formed in the mounting disc, a sliding groove communicated with the cavity is formed in the surface of the mounting disc, a driving cylinder is arranged in the cavity and below the sliding groove, and one end of the grinding rod extends into the sliding groove and is fixedly connected with the output end of the driving cylinder.
In a preferred embodiment, the mounting seat is provided with a mounting groove along the length direction of the mounting seat, the adjusting mechanism is arranged in the mounting groove, the adjusting mechanism comprises an electric screw rod arranged in the middle and two guide rods arranged on two sides of the electric screw rod, the two guide rods are slidably connected with the positioning piece, and the electric screw rod is in threaded connection with the positioning piece.
In a preferred embodiment, the positioning elements comprise positioning blocks, a plurality of positioning rods arranged on the positioning blocks in rows and rollers sleeved on the positioning rods, the positioning rods are vertically arranged, and the rollers rotate when the direct-buried heat preservation pipe moves between the two positioning elements.
The technical scheme of the invention has the beneficial effects that:
1. the directly-buried heat-insulating pipe is positioned and fixed through the positioning mechanism, and the pipe orifices on the two sides of the directly-buried heat-insulating pipe are polished by the two polishing mechanisms on the two sides respectively. The positioning mechanism is arranged to ensure that the direct-buried heat-insulating pipe can be accurately positioned to a specified polishing site, so that the polishing work is smoothly carried out.
2. The positioning piece is connected with the directly-buried heat preservation pipe in a rolling way, so that the fixed directly-buried heat preservation pipe can be pushed, and the fixing point of the directly-buried heat preservation pipe can be conveniently adjusted.
3. Polishing work is gone on in the surge drum, and the surge drum is used for collecting the piece that produces of polishing, conveniently carries out the later stage clearance. The plug-in block can translate and slide out from the slot, so that the collecting cylinder is disassembled, and the collecting cylinder after disassembly is convenient to clean.
4. The driving mechanism drives the mounting disc to rotate, and the mounting disc drives the polishing assembly to rotate and circumferentially polish the outer surface of the pipe opening, so that uniform and thorough polishing is guaranteed.
Drawings
Figure 1 is a schematic view of the overall structure of the present invention,
figure 2 is a schematic diagram of the polishing assembly of the present invention,
figure 3 is a top view of the drive cylinder of the present invention secured within the cavity,
FIG. 4 is a side view of the collecting cylinder and the supporting seat of the present invention,
FIG. 5 is a schematic view of a positioning mechanism according to the present invention.
Description of reference numerals: the polishing machine comprises a base 1, a polishing mechanism 2, a driving mechanism 21, a mounting disc 22, a polishing component 23, a 231 polishing rod, a 232 polishing bulge, a 24 sliding chute, a 25 driving air cylinder, a 3 collecting cylinder, a 4 plug-in block, a 5 supporting seat, a 51 slot, a 6 positioning mechanism, a 61 mounting seat, a 611 mounting groove, a 62 adjusting mechanism, an 621 electric screw rod, a 622 guide rod, a 63 positioning piece, a 631 positioning block, a 632 positioning rod and a 633 roller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1-5, the surface polishing device for producing the directly-buried thermal insulation pipe in the technical scheme of the invention comprises a base 1, two polishing mechanisms 2 arranged on two sides of the base 1, and a plurality of positioning mechanisms 6 arranged between the two polishing mechanisms 2. The direct-buried heat-insulating pipe is positioned and fixed through the positioning mechanism 6, and the pipe orifices on the two sides of the direct-buried heat-insulating pipe are polished by the two polishing mechanisms on the two sides respectively. The positioning mechanism 6 is arranged to ensure that the direct-buried heat-insulating pipe can be accurately positioned to a specified polishing site, so that the polishing work can be smoothly carried out.
The positioning mechanism 6 comprises an installation base 61, an adjusting mechanism 62 arranged on the installation base 61, and two positioning pieces 63 slidably sleeved on the adjusting mechanism 62, wherein the two positioning pieces 63 are arranged oppositely, and the direct-buried heat preservation pipe passes through between the two positioning pieces 63 and is in rolling connection with the two positioning pieces 63.
The adjusting mechanism 62 is used for adjusting the distance between the two positioning parts 63, and the direct-buried heat preservation pipe is placed between the two positioning parts. The two positioning parts 63 are close to each other and clamp two sides of the directly-buried heat-insulating pipe through the adjusting mechanism 62, so that the directly-buried heat-insulating pipe is prevented from being displaced during polishing. The positioning piece 63 is connected with the directly-buried heat preservation pipe in a rolling way, so that the fixed directly-buried heat preservation pipe can be pushed, and the fixing point of the directly-buried heat preservation pipe can be conveniently adjusted.
The mounting seat 61 is provided with a mounting groove 611 along the length direction of the mounting seat 61, the adjusting mechanism 62 is disposed in the mounting groove 611, the adjusting mechanism 62 includes an electric screw 621 disposed in the middle and two guide rods 622 disposed on two sides of the electric screw 621, the two guide rods 622 are slidably connected with the positioning member 63, and the electric screw 621 is threadedly connected with the positioning member 63. The positioning members are driven by the electric screw 621 to move in the sliding slot 24, and the screw directions of the two sides of the electric screw 621 are opposite, so that the two positioning members 63 move in the directions approaching to or departing from each other. The guide rod 622 ensures a stable sliding of the positioning element in the slide groove 24.
The positioning member 63 includes a positioning block 631, a plurality of positioning rods 632 arranged in a row on the positioning block 631, and a roller 633 sleeved on the positioning rods 632, the positioning rods 632 are vertically arranged, and the roller 633 rotates when the direct-buried thermal insulation pipe moves between the two positioning members 63.
When positioning, the directly-buried heat-insulating pipe is placed between the two positioning parts 63, one end of the directly-buried heat-insulating pipe is pushed into one of the polishing mechanisms 2, and then the two positioning parts 63 are driven to mutually approach and clamp the directly-buried heat-insulating pipe through the electric screw 621. The direct-buried heat-insulating pipe is fixed and then polished. After the polishing work of one end is finished, the directly-buried heat preservation pipe is pushed to enable the other end of the directly-buried heat preservation pipe to extend into the other polishing mechanism 2. The direct-buried heat-insulating pipe is convenient to push because rolling friction exists between the direct-buried heat-insulating pipe and the roller 633.
The polishing mechanism 2 comprises a driving mechanism 21, a mounting disc 22 fixed with the output end of the driving mechanism 21 and a polishing component 23 circumferentially arranged on the mounting disc 22, and the two polishing mechanisms 2 are respectively used for polishing pipe orifices on two sides of the directly-buried insulating pipe. The driving mechanism 21 is a driving mechanism such as a motor. The driving mechanism 21 drives the mounting disc 22 to rotate, and the mounting disc 22 drives the polishing assembly 23 to rotate and circumferentially polish the outer surface of the pipe orifice, so that uniform and thorough polishing is guaranteed.
The mounting disc 22 is close to 6 sides of positioning mechanism and is provided with the surge drum 3 of horizontal installation, and polishing subassembly 23 stretches into in the surge drum 3, and the mouth of pipe of direct-burried insulating tube stretches into the surge drum 3 during the polishing, and the surge drum 3 can be dismantled fixedly with base 1. Polishing work is gone on in collecting vessel 3, and collecting vessel 3 is used for collecting the piece that produces of polishing, conveniently carries out the later stage clearance.
The bottom of the collecting cylinder 3 is provided with an inserting block 4, the base 1 is provided with a supporting seat 5 with a slot 51, and the inserting block 4 is detachably inserted into the slot 51. The plug-in block 4 can be translated and slide out from the slot 51, so that the collecting cylinder 3 can be disassembled, and the disassembled collecting cylinder 3 is convenient to clean.
Polishing subassembly 23 passes through actuating mechanism 21 drive and rotates, and polishing subassembly 23 includes a plurality of pole 231 of polishing, is provided with a plurality of arch 232 of polishing on the pole 231 of polishing, and pole 231 of polishing slides fixedly with mounting disc 22. During polishing, the pipe orifice of the directly-buried heat-insulating pipe is located in an internal area formed by the plurality of polishing rods 231, the adjusting mechanism 62 drives the polishing rods 231 to be close to the outer surface edge of the directly-buried heat-insulating pipe, the polishing protrusions 232 are in contact with the outer surface of the directly-buried heat-insulating pipe, the driving mechanism 21 drives the mounting disc 22 to rotate, and polishing of the polishing assembly 23 on the outer surface of the directly-buried heat-insulating pipe is achieved.
Be equipped with the cavity in the mounting disc 22, mounting disc 22 surface is provided with the spout 24 with the cavity intercommunication, lies in spout 24 below in the cavity and is provided with and drives actuating cylinder 25, and the one end of polish rod 231 stretches into spout 24 and with the output fixed connection who drives actuating cylinder 25. The plurality of driving air pipes move synchronously, so that the polishing protrusions 232 on each polishing rod 231 can be in contact with the outer surface of the directly-buried heat-insulating pipe, the acting force of the polishing rods 231 on the outer surface of the directly-buried heat-insulating pipe is the same, and the polishing uniformity is guaranteed.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims (7)

1. The utility model provides a surface finish device is used in production of direct-burried insulating tube which characterized in that: the polishing device comprises a base, two polishing mechanisms arranged on two sides of the base and a plurality of positioning mechanisms arranged between the two polishing mechanisms;
the polishing mechanisms comprise driving mechanisms, mounting discs fixed with the output ends of the driving mechanisms and polishing assemblies circumferentially arranged on the mounting discs, and the two polishing mechanisms are respectively used for polishing pipe orifices on two sides of the directly-buried heat-insulating pipe;
the positioning mechanism comprises a mounting seat, an adjusting mechanism arranged on the mounting seat, and two positioning pieces arranged on the adjusting mechanism in a sliding way, wherein the two positioning pieces are arranged oppositely, and the direct-buried heat-insulating pipe passes through the two positioning pieces and is connected with the two positioning pieces in a rolling way.
2. The surface polishing device for the production of the direct-buried heat preservation pipe as recited in claim 1, wherein: the mounting disc is close to the positioning mechanism side and is provided with the surge drum of horizontal installation, polishing subassembly stretches into in the surge drum, and the mouth of pipe of direct-burried insulating tube stretches into during the polishing in the surge drum, the surge drum with the base can be dismantled fixedly.
3. The surface polishing device for producing the direct-buried heat preservation pipe as claimed in claim 2, wherein: the collecting cylinder bottom is provided with the grafting piece, be provided with the supporting seat that has the slot on the base, the grafting piece can be dismantled and insert in the slot.
4. The surface polishing device for the production of the direct-buried heat preservation pipe as recited in claim 1, wherein: the polishing assembly is driven to rotate by the driving mechanism and comprises a plurality of polishing rods, a plurality of polishing bulges are arranged on the polishing rods, and the polishing rods are fixed with the mounting disc in a sliding mode.
5. The surface polishing device for producing the direct-buried heat preservation pipe as claimed in claim 4, wherein: the polishing device is characterized in that a cavity is formed in the mounting disc, a sliding groove communicated with the cavity is formed in the surface of the mounting disc, a driving cylinder is arranged below the sliding groove in the cavity, and one end of a polishing rod extends into the sliding groove and is fixedly connected with the output end of the driving cylinder.
6. The surface polishing device for the production of the direct-buried heat preservation pipe as recited in claim 1, wherein: follow on the mount pad length direction is provided with the mounting groove, adjustment mechanism sets up in the mounting groove, adjustment mechanism is in including setting up the electronic lead screw at the middle part and setting two guide bars of electronic lead screw both sides, two the guide bar with setting element sliding connection, electronic lead screw with setting element threaded connection.
7. The surface polishing device for the production of the direct-buried heat preservation pipe as recited in claim 1, wherein: the positioning pieces comprise positioning blocks, a plurality of positioning rods arranged in rows on the positioning blocks and rollers sleeved on the positioning rods, the positioning rods are vertically arranged, and the rollers rotate when the direct-buried heat-insulation pipes move between the two positioning pieces.
CN202110913954.1A 2021-08-10 2021-08-10 Surface polishing device for production of directly-buried insulating pipe Pending CN113510604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110913954.1A CN113510604A (en) 2021-08-10 2021-08-10 Surface polishing device for production of directly-buried insulating pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110913954.1A CN113510604A (en) 2021-08-10 2021-08-10 Surface polishing device for production of directly-buried insulating pipe

Publications (1)

Publication Number Publication Date
CN113510604A true CN113510604A (en) 2021-10-19

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ID=78068026

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110913954.1A Pending CN113510604A (en) 2021-08-10 2021-08-10 Surface polishing device for production of directly-buried insulating pipe

Country Status (1)

Country Link
CN (1) CN113510604A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204075973U (en) * 2014-07-11 2015-01-07 温岭市双森不锈钢有限公司 A kind of stainless steel tube polishing machine
CN107649979A (en) * 2017-11-03 2018-02-02 洪学金 A kind of civil engineering pipeline edge polisher
JP6714218B1 (en) * 2019-06-17 2020-06-24 温州順創智能科技有限公司 Equipment for removing rust on the outer wall of environmentally friendly pipes for construction
CN211332551U (en) * 2019-12-06 2020-08-25 江苏利东管业科技有限公司 Plastic pipeline end polishing device capable of preventing chips from splashing
CN111993211A (en) * 2020-09-18 2020-11-27 东海县常春门窗有限公司 Corner polishing equipment and gluing method for door and window production
CN212169868U (en) * 2020-05-18 2020-12-18 安徽巨泰机械制造有限公司 Grinding device for casting pig iron pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204075973U (en) * 2014-07-11 2015-01-07 温岭市双森不锈钢有限公司 A kind of stainless steel tube polishing machine
CN107649979A (en) * 2017-11-03 2018-02-02 洪学金 A kind of civil engineering pipeline edge polisher
JP6714218B1 (en) * 2019-06-17 2020-06-24 温州順創智能科技有限公司 Equipment for removing rust on the outer wall of environmentally friendly pipes for construction
CN211332551U (en) * 2019-12-06 2020-08-25 江苏利东管业科技有限公司 Plastic pipeline end polishing device capable of preventing chips from splashing
CN212169868U (en) * 2020-05-18 2020-12-18 安徽巨泰机械制造有限公司 Grinding device for casting pig iron pipe
CN111993211A (en) * 2020-09-18 2020-11-27 东海县常春门窗有限公司 Corner polishing equipment and gluing method for door and window production

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