CN215882640U

CN215882640U - Electromagnetic induction heating clamp

Info

Publication number: CN215882640U
Application number: CN202122055520.0U
Authority: CN
Inventors: 杨蒙
Original assignee: Guangdong Guoheng Plastic Development Co ltd
Current assignee: Guangdong Guoheng Plastic Development Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-22
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses an electromagnetic induction heating clamp which comprises an electromagnetic induction heating power supply, a handle shell, a magnetic ring, a coil, a connecting block and a heating ring, wherein the handle shell is provided with a handle; the magnetic ring is arranged inside the handle shell; the coil is wound on the magnetic ring, and two ends of the coil are respectively and electrically connected with the electromagnetic induction heating power supply through wires; the coil comprises at least six turns; the connecting block is sleeved on the magnetic ring and matched with the magnetic ring; the heating ring comprises a first semi-annular ring and a second semi-annular ring which are in an open-close design; the first end of the first semi-annular ring is hinged with the first end of the second semi-annular ring, and the second end of the first semi-annular ring and the second end of the second semi-annular ring are detachably connected with two ends of the connecting block, which extend out of the handle shell, through a locking mechanism. The heating ring has an opening-closing design, is not provided with a shell, has small outer diameter, can be directly sleeved on a pipe fitting for use, can be used at a position with narrow space, and can be detachably arranged and can replace heating rings with different sizes.

Description

Electromagnetic induction heating clamp

Technical Field

The utility model relates to the technical field of electromagnetic induction heating, in particular to an electromagnetic induction heating clamp.

Background

Based on the Faraday electromagnetic induction principle, the electromagnetic induction heating technology is a method for improving alternating current frequency, and is a technology which enables alternating current with high speed change to flow through a coil to generate alternating magnetic lines, the magnetic lines penetrate through a heating object to form a loop, and induced current (namely eddy current) is generated in the cross section of the loop and forms a heat effect, so that a heating workpiece is rapidly heated, and the purpose of heating metal or other materials indirectly contacted with the metal is achieved.

The inventor of the present invention has previously applied an electromagnetic induction heater of CN202799232U, an electromagnetic induction heating device of CN202738148U and an electromagnetic induction energy-gathering heating device of CN203675355U to search for the manufacturing principle of a low inductance (when the number of turns of an induction coil is limited) electromagnetic induction coil (load), mainly by adopting an isolation transformer or a multi-stage series resonant circuit to form a load inductance with the induction coil and matching the whole load inductance with an electromagnetic power supply, therefore, the whole load inductance is improved by the induction coil with low inductance (for example, 3-7 turns, the inductance is 3.0-6 muH) because of the series connection of the isolation transformer and the multistage series resonance circuit (the specified inductance can be obtained by adjusting the turn ratio of the isolation transformer, and the requirement of the circuit design of the electromagnetic power generator is correspondingly reduced), and the induction heating work of the low-inductance coil of the electromagnetic power generator becomes possible.

At present, some practitioners have also conducted beneficial research on the manufacture of induction coils, such as a steel-plastic composite pipe electromagnetic heating welding fixture of CN106493958B, a steel-plastic composite pipe electromagnetic heating welding fixture of CN106493959B, and a plastic pipe electromagnetic heating device of CN 204451200U. In fact, in the field of installation of steel-plastic composite pipes, in the installation of indoor pipelines, the core problem often faced is not a heating means, but because pipes need to be attached to a wall or even embedded into a wall for installation, if the outer diameter of a heating clamp is too large, the installation position is too narrow, and no space for placing the clamp exists, the heating clamp basically has no installation possibility or only can be reluctant, and the installation risk (such as only strongly snapping the pipes) is faced, and the efficiency is not high. The induction coil of the existing heating clamp is generally completely arranged in the shell, so that the size of the heating clamp at the position of the induction coil is increased by the shell, the heating clamp cannot be placed in a narrow space, and the use is influenced.

SUMMERY OF THE UTILITY MODEL

The electromagnetic induction heating fixture comprises a heating ring which is opened and closed, is not provided with a shell and is equivalent to an induction coil, has a smaller outer diameter, can be directly sleeved on the outer surface of a double-hot-melting pipe corresponding to a steel-plastic composite pipe, can heat a metal layer in the steel-plastic composite pipe, and can be used at a position with a narrow space.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

an electromagnetic induction heating clamp comprises an electromagnetic induction heating power supply, a handle shell, a magnetic ring, a coil, a connecting block and a heating ring; the magnetic ring is arranged inside the handle shell; the coil is wound on the magnetic ring, and two ends of the coil are respectively and electrically connected with the electromagnetic induction heating power supply through leads to form a primary coil; the coil comprises at least six turns; the connecting block is sleeved on the magnetic ring and matched with the magnetic ring; the heating ring comprises a first semi-annular ring and a second semi-annular ring which are in an opening and closing design; the first end of the first semi-annular ring is hinged with the first end of the second semi-annular ring, the second end of the first semi-annular ring and the second end of the second semi-annular ring are respectively detachably connected with two ends, extending out of the handle shell, of the connecting block through a locking mechanism, and the connecting block forms a secondary coil.

For the additional structure of the above technical scheme, the following scheme is also included:

as a specific embodiment, the connecting block comprises a first connecting sheet and a second connecting sheet; the first end of the first connecting sheet and the first end of the second connecting sheet are mutually connected and form a cavity for being sleeved on the magnetic ring, and the second end of the first connecting sheet and the second end of the second connecting sheet respectively extend out of the handle shell and are arranged at intervals; the second end of the first connecting piece and the second end of the first semi-annular ring as well as the second end of the second connecting piece and the second end of the second semi-annular ring are detachably connected through the locking mechanism.

Further, the second end of the first semi-annular ring is connected with the second end of the first connecting sheet through a third connecting sheet arranged on the outer side; the second end of the second semi-annular ring is connected with the second end of the second connecting piece through a fourth connecting piece arranged on the outer side; the second end of the first connecting sheet is detachably connected with the third connecting sheet and the second end of the second connecting sheet is detachably connected with the fourth connecting sheet through the locking mechanism.

Furthermore, the locking mechanism comprises a bolt and a nut; a lock hole is respectively arranged at the second end of the first connecting sheet, the second end of the second connecting sheet, the third connecting sheet and the fourth connecting sheet; the bolt sequentially penetrates through the fourth connecting sheet, the second end of the second connecting sheet, the second end of the first connecting sheet and the lock hole of the third connecting sheet and then is connected with the nut.

Further, an insulating sheet is arranged between the second end of the first connecting sheet and the second end of the second connecting sheet.

Further, a first step is formed between the bottom surface of the third connecting piece and the outer side surface of the first semi-annular ring; a second step is formed between the top surface of the fourth connecting piece and the outer side surface of the second semi-annular ring; the second end of the first connecting piece and the second end of the second connecting piece are fittingly inserted in the first step and the second step.

Furthermore, the locking holes in the third connecting piece and the fourth connecting piece extend outwards to the outer end of the third connecting piece and the outer end of the fourth connecting piece respectively to form an opening structure.

As a specific embodiment, a plurality of heat dissipation convex strips are respectively arranged on the outer side surface of the first semi-annular ring and the outer side surface of the second semi-annular ring.

As a specific embodiment, when the first semi-annular ring and the second semi-annular ring are locked, the end surface of the first end of the first semi-annular ring is in interference fit with the end surface of the first end of the second semi-annular ring.

As a specific embodiment, the diameter of a through hole formed by locking the first semi-annular ring and the second semi-annular ring is 24mm-138 mm.

As a specific embodiment, a heat dissipation fan facing the magnetic ring is further disposed on the handle housing, and an air outlet is further disposed on the handle housing.

The utility model has the beneficial effects that:

the utility model has simple and reasonable structure, utilizes the coil to match the magnetic ring with the connecting block to form current induction output, then outputs the current induction output to the heating ring through the connecting block, and finally, the heating ring which is equivalent to the induction coil heats the metal in the pipe fitting by utilizing the electromagnetic induction principle so as to carry out welding. The heating ring is not provided with the shell and comprises the first semi-annular ring and the second semi-annular ring which are in an open-close design, the heating ring can be directly sleeved on the outer surface of the double-hot-melting pipe fitting corresponding to the steel-plastic composite pipe, so that the metal layer in the steel-plastic composite pipe can be subjected to induction heating, the outer diameter of the heating ring is smaller than that of a traditional induction coil with the shell, normal use can be guaranteed, the heating ring can be placed in a narrow installation position, and the applicability is improved; simultaneously, because connecting block and heating ring between for can dismantling the connection, consequently, its accessible unloads the heating ring and gets off the heating ring of change unidimensional to can be used for not unidimensional pipe fitting through the heating ring of changing unidimensional on, reach many specifications sharing's purpose, reduce use cost, improve the suitability. Of course, the utility model can also be used for the heat treatment of small workpieces, for example screws.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a first partial schematic view of the present invention;

fig. 3 is a partial structural schematic diagram of the present invention.

Reference numerals:

1. a handle housing; 2. a magnetic ring; 3. a coil; 4. connecting blocks; 41. a first connecting piece; 411. a first end of a first connecting piece; 412. a second end of the first connecting piece; 42. a second connecting sheet; 421. a second end of the second connecting piece; 422. a second end of the second connecting piece; 5. a heating ring; 51. a first semi-annular ring; 511. a first end of a first semi-annular ring; 512. a second end of the first semi-annular ring; 52. a second semi-annular ring; 521. a first end of the second semi-annular shape; 522. a second end of the second semi-annular ring; 513. a third connecting sheet; 514. a fourth connecting sheet; 515. a first step; 516. a second step; 6. a bolt; 7. a nut; 8. a lock hole; 9. an insulating sheet; 10. a reinforcing strip; 11. a through hole; 12. a control switch; 13. and (4) an air outlet.

Detailed Description

The utility model will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the utility model.

As shown in fig. 1-3, an electromagnetic induction heating fixture comprises an electromagnetic induction heating power supply, a handle housing 1, a magnetic ring 2, a coil 3, a connecting block 4 and a heating ring 5; the magnetic ring 2 is arranged inside the handle shell 1; the coil 3 is wound on the magnetic ring 2, and two ends of the coil 3 are respectively and electrically connected with the electromagnetic induction heating power supply through leads to form a primary coil; the coil 3 at least comprises six turns, and the number of the turns can be specifically set according to requirements; the connecting block 4 is sleeved on the magnetic ring 2 and matched with the magnetic ring 2; the heating ring 5 comprises a first semi-annular ring 51 and a second semi-annular ring 52 which are of an open-close design; the first end 511 of the first semi-annular ring is hinged with the first end 521 of the second semi-annular ring, the second end 512 of the first semi-annular ring and the second end 522 of the second semi-annular ring are respectively detachably connected with two ends of the connecting block 4 extending out of the handle shell 1 through a locking mechanism, the connecting block 4 forms a secondary coil, and the heating ring 5 is equivalent to an induction coil. The utility model has simple and reasonable structure, utilizes the coil 3 to cooperate with the magnetic ring 2 and the connecting block 4 to form the induction output of current, then outputs the induction output to the heating ring 5 through the connecting block 4, and finally, the heating ring 5 which is equivalent to the induction coil heats the metal in the pipe fitting by utilizing the electromagnetic induction principle so as to carry out welding. Because the heating ring 5 comprises the first semi-annular ring 51 and the second semi-annular ring 52 which are in an open-close design, the heating ring 5 can be directly used for being sleeved on the outer surface of the double-hot-melting pipe fitting corresponding to the steel-plastic composite pipe to perform induction heating on a metal layer in the steel-plastic composite pipe, and the heating ring is not wrapped by a shell, the outer diameter of the heating ring can be reduced, so that the heating ring is smaller than the outer diameter of a traditional induction coil with the shell and can be normally used, the heating ring can be placed in a narrow installation position, and the applicability is improved; simultaneously, because connecting block 4 and heating ring 5 between for can dismantling the connection, consequently, its accessible unloads heating ring 5 and changes not unidimensional heating ring 5 to can be used for not unidimensional pipe fitting through changing not unidimensional heating ring 5 on, reach many specifications sharing's purpose, reduce use cost, improve the suitability.

Wherein, the connecting block 4 comprises a first connecting sheet 41 and a second connecting sheet 42; the first end 411 of the first connecting sheet and the first end 421 of the second connecting sheet are connected with each other and form a cavity 43 which is sleeved on the magnetic ring 2, and the first end 411 of the first connecting sheet and the first end 421 of the second connecting sheet are locked and conducted through screws and connected to the handle shell 1; the second end 412 of the first connecting piece and the second end 422 of the second connecting piece respectively extend out of the handle shell 1 and are arranged at intervals, namely, the second end 412 of the first connecting piece and the second end 422 of the second connecting piece form two ends of the connecting piece 4; the second end 412 of the first connecting piece and the second end 512 of the first semi-annular ring and the second end 422 of the second connecting piece and the second end 522 of the second semi-annular ring are detachably connected by a locking mechanism. Through the arrangement, the connecting block 4 can be conveniently connected with the heating ring 5.

Specifically, as shown in fig. 3, the first end 411 of the first connecting piece and the first end 421 of the second connecting piece each have a straight portion "in the shape of a straight line" and a portion "in the shape of" "connected in sequence.

The second end 512 of the first semi-annular ring is connected to the second end 412 of the first connecting piece by a third connecting piece 513 arranged on the outside; the second end 522 of the second semi-annular ring is connected to the second end 422 of the second web by a fourth web 514 disposed on the outside; the second end 412 of the first connecting piece and the third connecting piece 513 and the second end 422 of the second connecting piece and the fourth connecting piece 514 are detachably connected through a locking mechanism. Preferably, the third connecting piece 513 and the fourth connecting piece 514 extend transversely. Through the arrangement, the connection and conduction of the connecting block 4 and the heating ring 5 can be further facilitated, and the assembly and disassembly are more convenient.

The locking mechanism comprises a bolt 6 and a nut 7; a locking hole 8 is respectively formed in the second end 412 of the first connecting piece, the second end 422 of the second connecting piece, the third connecting piece 513 and the fourth connecting piece; the bolt 6 sequentially passes through the locking holes 8 of the fourth connecting piece 514, the second end 422 of the second connecting piece, the second end 412 of the first connecting piece and the third connecting piece 513 and then is connected with the nut 7, so that the four parts can be correspondingly locked in pairs, and the effect of connection and conduction is achieved.

An insulating sheet 9 is disposed between the second end 412 of the first connecting sheet and the second end 422 of the second connecting sheet, so that the second end 412 of the first connecting sheet and the second end 422 of the second connecting sheet can be prevented from contacting to cause short circuit.

A first step 515 is formed between the bottom surface of the third connecting piece 513 and the outer side surface of the first semi-annular ring 51; a second step 516 is formed between the top surface of the fourth connecting piece 514 and the outer side surface of the second semi-annular ring 52; the second end 412 of the first connecting piece and the second end 422 of the second connecting piece are matingly inserted in the first step 515 and the second step 516. Can be more stable when setting up through above can let locking mechanism locking third connection piece 513, fourth connection piece 514, the second end 412 of first connection piece and the second end 422 of second connection piece, difficult not hard up guarantees electrically conductive effect.

Preferably, the outer end of the insulating sheet 9 extends outwardly beyond the second ends 412 and 422 of the first and second connecting tabs to clamp the outer end of the insulating sheet 9 when the first and second semi-annular rings 51 and 52 are closed.

Lockhole 8 on third connection piece 513 and the fourth connection piece 514 outwards extends to the outer end of third connection piece 513 and the outer end of fourth connection piece 514 respectively, form open structure, thereby can let first semicircular ring 51 and second semicircular ring 52 can make things convenient for the dismouting, when dismantling, because above-mentioned two lockholes 8 are open structure, therefore, only need to loosen nut 7 after can carrying out horizontal migration with handle casing 1, thereby can let heating ring 5 and bolt 6 break away from, and need not tear out bolt 6 and nut 7 completely, the use has been made things convenient for, the same reason, when installing, only need to aim at bolt 6 with lockhole 8 after can insert, then twist nut 7 can.

A plurality of heat dissipation ribs 10 are respectively disposed on the outer side surface of the first semi-annular ring 51 and the outer side surface of the second semi-annular ring 52, in this embodiment, the number of the heat dissipation ribs 10 is a plurality of uniformly distributed ribs. By arranging the heat dissipation convex strips 10, the rigidity of the heating ring 5 can be enhanced, and meanwhile, the heat dissipation area can be conveniently increased, so that the heat dissipation effect is improved.

When the first semi-annular ring 51 and the second semi-annular ring 52 are locked, the end surface of the first end 511 of the first semi-annular ring is in interference fit with the end surface of the first end 521 of the second semi-annular ring, so that the sufficient conductive area of the heating ring 5 can be ensured, and the conduction is more stable.

Two hollow first connecting columns are arranged on the outer side surface of the first end 511 of the first semi-annular ring; a hollow second connecting column is arranged on the outer side surface of the first end 521 of the second semi-annular ring; the second connecting column is clamped between the two first connecting columns, and the two first connecting columns and the second connecting column are rotatably connected through a bolt, so that a hinge structure is formed.

The diameter of the through hole 11 formed by locking the first semi-annular ring 51 and the second semi-annular ring 52 is 24mm-138 mm. Specifically, the diameter of the through-hole 11 is generally 28.5. + -.2 mm, 35. + -.3 mm, 42. + -.3.5 mm, 55. + -.4 mm, 65. + -.4 mm and 79. + -.4 mm in order to cater for different sizes of pipes.

The width of the connecting block 4 is 8mm-100mm, specifically, the width of the first connecting sheet 41 and the width of the second connecting sheet 42 are both 8mm-100mm, and the specific required size can be adjusted according to actual needs and by matching with the magnetic ring 2.

Preferably, the material of the heating ring 5 is gold, silver, or copper, and is preferably made of copper for cost reasons.

Preferably, the magnetic ring 3 is a closed circular magnetic ring.

Preferably, a control switch 12 connected between the coil 3 and the electromagnetic induction heating power source is further provided in the handle housing 1.

Preferably, a heat dissipation fan (not shown) is disposed on the handle housing 1, and an air outlet 13 is further disposed on the handle housing 1, so as to take away heat generated during operation of internal components of the handle housing 1.

For convenience of manufacturing, the third connecting piece 513 is integrally formed with the first semi-annular ring 51, and the fourth connecting piece 514 is integrally formed with the second semi-annular ring 51.

The following describes the principle of use of the utility model in order to understand the utility model:

firstly, opening a heating ring 5 with a corresponding size to be used, sleeving the heating ring 5 on a corresponding steel-plastic composite pipe and a double-hot-melting pipe fitting to be welded, closing the heating ring 5, connecting the heating ring with a connecting block 4, and locking the heating ring, so that the second end 412 of the first connecting sheet is contacted with the third connecting sheet 513, the second end 422 of the second connecting sheet is contacted with the fourth connecting sheet 514, and the first semi-annular ring 51 and the second semi-annular ring 52 clamp the outer end of the insulating sheet 9; then, connecting the electromagnetic induction heating power supply, and turning on the control switch 12; current is induced to the connecting block 4 and the heating ring 5 through the coil 3 and the magnetic ring 2, so that a magnetic field is generated, eddy current is generated inside a metal layer inside the steel-plastic composite pipe, the temperature of the metal layer is increased, when the temperature of the metal reaches the melting temperature of plastic coated on the outer layer of the metal, the plastic starts to melt, the steel-plastic composite pipe and the double hot-melt pipe are tightly welded together, and in the working process, the heat dissipation fan dissipates heat synchronously.

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. An electromagnetic induction heating anchor clamps which characterized in that:

comprises an electromagnetic induction heating power supply, a handle shell, a magnetic ring, a coil, a connecting block and a heating ring; the magnetic ring is arranged inside the handle shell; the coil is wound on the magnetic ring, and two ends of the coil are respectively and electrically connected with the electromagnetic induction heating power supply through leads to form a primary coil; the coil comprises at least six turns; the connecting block is sleeved on the magnetic ring and matched with the magnetic ring; the heating ring comprises a first semi-annular ring and a second semi-annular ring which are in an opening and closing design; the first end of the first semi-annular ring is hinged with the first end of the second semi-annular ring, the second end of the first semi-annular ring and the second end of the second semi-annular ring are respectively detachably connected with two ends, extending out of the handle shell, of the connecting block through a locking mechanism, and the connecting block forms a secondary coil.

2. An electromagnetic induction heating jig as set forth in claim 1, wherein:

the connecting block comprises a first connecting sheet and a second connecting sheet; the first end of the first connecting sheet and the first end of the second connecting sheet are mutually connected and form a cavity for being sleeved on the magnetic ring, and the second end of the first connecting sheet and the second end of the second connecting sheet respectively extend out of the handle shell and are arranged at intervals; the second end of the first connecting piece and the second end of the first semi-annular ring as well as the second end of the second connecting piece and the second end of the second semi-annular ring are detachably connected through the locking mechanism.

3. An electromagnetic induction heating jig according to claim 2, characterized in that:

the second end of the first semi-annular ring is connected with the second end of the first connecting sheet through a third connecting sheet arranged on the outer side; the second end of the second semi-annular ring is connected with the second end of the second connecting piece through a fourth connecting piece arranged on the outer side; the second end of the first connecting sheet is detachably connected with the third connecting sheet and the second end of the second connecting sheet is detachably connected with the fourth connecting sheet through the locking mechanism.

4. An electromagnetic induction heating jig as set forth in claim 3, wherein:

the locking mechanism comprises a bolt and a nut; a lock hole is respectively arranged at the second end of the first connecting sheet, the second end of the second connecting sheet, the third connecting sheet and the fourth connecting sheet; the bolt sequentially penetrates through the fourth connecting sheet, the second end of the second connecting sheet, the second end of the first connecting sheet and the lock hole of the third connecting sheet and then is connected with the nut.

5. An electromagnetic induction heating jig according to claim 4, characterized in that:

an insulating sheet is arranged between the second end of the first connecting sheet and the second end of the second connecting sheet.

6. An electromagnetic induction heating jig as set forth in claim 5, wherein:

a first step is formed between the bottom surface of the third connecting piece and the outer side surface of the first semi-annular ring; a second step is formed between the top surface of the fourth connecting piece and the outer side surface of the second semi-annular ring; the second end of the first connecting piece and the second end of the second connecting piece are fittingly inserted in the first step and the second step.

7. An electromagnetic induction heating jig according to claim 4, characterized in that:

the locking holes in the third connecting piece and the fourth connecting piece extend outwards to the outer end of the third connecting piece and the outer end of the fourth connecting piece respectively to form an opening structure.

8. An electromagnetic induction heating jig as set forth in claim 1, wherein:

and a plurality of heat dissipation convex strips are respectively arranged on the outer side surface of the first semi-annular ring and the outer side surface of the second semi-annular ring.

9. An electromagnetic induction heating jig as set forth in claim 1, wherein:

when the first semi-annular ring and the second semi-annular ring are locked, the end face of the first end of the first semi-annular ring is in interference fit with the end face of the first end of the second semi-annular ring.

10. An electromagnetic induction heating jig as set forth in claim 1, wherein:

the diameter of a through hole formed by locking the first semi-annular ring and the second semi-annular ring is 24mm-138 mm.

11. An electromagnetic induction heating jig as set forth in claim 1, wherein:

the handle shell is also provided with a heat radiation fan which is over against the magnetic ring, and the handle shell is also provided with an air outlet hole.