An electromagnetic induction heating square adjustable tooling

Abstract

The present invention relates to an electromagnetic induction heating square adjustable tooling, which comprises a central support rod (1). A plurality of front and rear telescopic adjustment components (2) are arranged on the central support rod (1). A heating module (3) is arranged between the plurality of front and rear telescopic adjustment components (2). The inner and outer distance between the heating module (3) and the central support rod (1) can be adjusted through the telescopic adjustment components (2). The electromagnetic induction heating square adjustable tooling of the present invention can adjust the distance between the tooling and the inner wall of the square metal pipe fitting, so as to meet the heating requirements of square metal pipe fittings of different specifications, improve the applicable range of the tooling, and reduce the production cost.

Description

Technical Field

[0001] The present invention relates to an electromagnetic induction heating square adjustable tooling, belonging to the technical field of electromagnetic induction heating. Background Art

[0002] In traditional manufacturing, it is often necessary to heat metal workpieces. There are generally two traditional heating methods:

[0003] 1. Using flame heating. This heating method requires fuel consumption, and there are emissions of waste gas and waste residue during the heating process. Most of the heat is dissipated into the environment during the heating process, wasting a large amount of energy, with low energy utilization rate. Moreover, the workpiece is in contact with the fuel and its oxides during the heating process, making it easy for foreign substances to invade, thus affecting the quality of the workpiece. In addition, this heating method requires the overall heating of the workpiece and cannot perform local heat treatment, resulting in large energy consumption and large deformation of the workpiece during overall heating, affecting the finished product quality of the workpiece;

[0004] 2. Using resistance wire heating. Among them, resistance wire heating is more common. However, for resistance wire heating, its heating speed is slow, heat loss is large, thermal efficiency is low, and it is extremely easy to be damaged.

[0005] Electromagnetic induction heating is achieved by passing an alternating current with a certain frequency through an induction coil, generating an alternating magnetic field around the coil. The electromagnetic induction effect of the alternating magnetic field causes a closed induced current, that is, eddy current, to be generated inside the workpiece. The generated eddy current directly heats the metal, thus greatly reducing heat loss and improving energy utilization rate. Therefore, electromagnetic induction is a major development trend for heating metal workpieces.

[0006] An electromagnetic induction heating device is a heating device manufactured by applying the induction heating principle. A heating tooling is an important component of the induction heating device.

[0007] The basic accessories of the existing complete set of electromagnetic induction heating devices include: an induction heating main unit, a power cord, an extension cord, and an induction heating tooling. Among them, the induction heating main unit converts the input power frequency current into a high-frequency current, creates a high-frequency alternating magnetic field through the heating tooling, and the workpiece to be heated cuts the magnetic force lines, generating a strong eddy current inside, thereby heating itself.

[0008] The commonly used electromagnetic induction heating tooling is composed of a metal wire wrapped with an insulating layer and a support material. First, the metal wire is coiled into a spiral shape, and then it is fixed on various types of support materials such as high-silica fabric and epoxy resin materials.

[0009] Electromagnetic induction heating tooling is divided into hard tooling and soft tooling. The soft tooling can arbitrarily change the shape, size, and dimensions of the tooling, but the preparation work before heating and the finishing work after heating are relatively cumbersome. The shape of the hard tooling cannot be changed, but the preparation work before heating and the finishing work after heating are relatively simple.

[0010] At present, electromagnetic induction heating tools are also beginning to be used for pre-welding heating or post-welding stress relief of square metal pipe fittings. However, since the distance between the tooling and the workpiece to be heated should be kept within 1 - 3 cm, if the distance exceeds 3 cm, the induction heating main unit cannot output full power, and if the distance is too large, the main unit will report an error and stop working. Since there are many specifications of square metal pipe fittings, the existing electromagnetic induction heating tooling cannot meet the heating requirements of square metal pipe fittings of different specifications. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to provide an electromagnetic induction heating umbrella-type adjustable tooling for the above-mentioned existing technology. It can adjust the distance between the tooling and the inner wall of the square metal pipe fitting, thereby meeting the heating requirements of square metal pipe fittings of different specifications, improving the applicable range of the tooling, and reducing the production cost.

[0012] The technical solution adopted by the present invention to solve the above problems is: an electromagnetic induction heating square adjustable tooling, which includes a central support rod, and a plurality of front and rear telescopic adjustment components are arranged on the central support rod. A heating module is arranged between the plurality of front and rear telescopic adjustment components, and the inner and outer distance between the heating module and the central support rod can be adjusted through the telescopic adjustment components.

[0013] Optionally, the telescopic adjustment component includes a front fixed sleeve and a rear adjustment sleeve. Both the front fixed sleeve and the rear adjustment sleeve are sleeved on the central support rod. The front fixed sleeve is fixedly connected to the central support rod, the rear adjustment sleeve can slide back and forth along the central support rod, and four groups of support link mechanisms are uniformly arranged circumferentially between the front fixed sleeve and the rear adjustment sleeve. The heating module is fixedly arranged on the support link mechanism.

[0014] Optionally, four front connection lugs are uniformly arranged on the outer peripheral wall of the front fixed sleeve, and four rear connection lugs are uniformly arranged on the outer peripheral wall of the rear adjustment sleeve. The positions of the four front connection lugs and the four rear connection lugs correspond one by one. The support link mechanism includes a front support link and a rear support link. The front end of the front support link is hinged to the front connection lug, the rear end of the front support link is hinged to the front end of the rear support link, and the rear end of the rear support link is hinged to the rear connection lug.

[0015] Optionally, the rear section of the central support rod is a threaded section, and an adjustment nut is arranged on the threaded section. The adjustment nut is connected to the rear adjustment sleeve of the last telescopic adjustment component.

[0016] Optionally, the rear adjustment sleeves of the plurality of front and rear telescopic adjustment components are connected by an adjustment link.

[0017] Optionally, a heating module connecting piece is arranged at the hinged position of the front support connecting rod and the rear support connecting rod, and the support connecting rod mechanism is connected to the heating module through the heating module connecting piece.

[0018] Optionally, the heating module is of a right-angle structure. The right-angle heating module includes a right-angle inner frame and a right-angle outer frame. A heating wire groove is arranged between the right-angle inner frame and the right-angle outer frame, and a heating wire is arranged in the heating wire groove.

[0019] Optionally, the right-angle inner frame is connected between the support connecting rod mechanisms of multiple front and rear telescopic adjustment components.

[0020] Optionally, the right-angle inner frame includes a horizontal plate and a vertical plate, the right-angle outer frame includes a horizontal cover plate and a vertical cover plate, the horizontal cover plate is arranged outside the horizontal plate, and the vertical cover plate is arranged outside the vertical plate.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] 1. The present invention can adjust the distance between the tooling and the inner wall of the square metal pipe fitting, so as to meet the heating requirements of square metal pipe fittings of different specifications, improve the applicable range of the tooling, and reduce the production cost;

[0023] 2. The present invention installs the heating wire in the right-angle module to form a rigid heating module, which simplifies the preparatory work before heating and the finishing work after heating. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of an electromagnetic induction heating square adjustable tooling of the present invention.

[0025] Figure 2 It is Figure 1 a schematic diagram of the cooperation relationship between the telescopic adjustment component and the central support rod in

[0026] Figure 3 It is Figure 2 a schematic structural diagram of the telescopic adjustment component in

[0027] Figure 4 It is Figure 1 a schematic structural diagram of the heating module in

[0028] Figure 5 It is Figure 4 a schematic structural diagram of the right-angle inner frame in

[0029] Wherein:

[0030] Central support rod 1

[0031] Threaded section 11

[0032] Telescopic adjustment assembly 2

[0033] Front fixed sleeve 21

[0034] Rear adjustment sleeve 22

[0035] Support link mechanism 23

[0036] Front support link 231

[0037] Rear support link 232

[0038] Front connection ear seat 24

[0039] Rear connection ear seat 25

[0040] Heating module 3

[0041] Right-angled inner frame 31

[0042] Horizontal plate 311

[0043] Vertical plate 312

[0044] Right-angled outer frame 32

[0045] Horizontal cover plate 321

[0046] Vertical cover plate 322

[0047] Heating wire groove 33

[0048] Adjusting nut 4

[0049] Adjusting link 5

[0050] Heating module connector 6. Specific embodiments

[0051] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0052] See Figures 1 to 5 , an electromagnetic induction heating square adjustable tooling related to the present invention, which includes a central support rod 1, and a plurality of front and rear telescopic adjustment assemblies 2 are arranged on the central support rod 1, and a heating module 3 is arranged between the plurality of front and rear telescopic adjustment assemblies 2. The inner and outer distance between the heating module 3 and the central support rod 1 can be adjusted through the telescopic adjustment assembly 2;

[0053] The telescopic adjustment assembly 2 includes a front fixed sleeve 21 and a rear adjustment sleeve 22. Both the front fixed sleeve 21 and the rear adjustment sleeve 22 are sleeved on the central support rod 1. The front fixed sleeve 21 is fixedly connected to the central support rod 1 by screws. The rear adjustment sleeve 22 can slide back and forth along the central support rod 1. Four groups of support link mechanisms 23 are evenly arranged circumferentially between the front fixed sleeve 21 and the rear adjustment sleeve 22. The adjacent two groups of support link mechanisms 23 are arranged at an angle of 90°. The heating module 3 is fixedly arranged on the support link mechanism 23;

[0054] Four front connection lugs 24 are evenly arranged on the outer peripheral wall of the front fixed sleeve 21. Four rear connection lugs 25 are evenly arranged on the outer peripheral wall of the rear adjustment sleeve 22. The positions of the four front connection lugs 24 and the four rear connection lugs 25 correspond one by one. The support link mechanism 23 includes a front support link 231 and a rear support link 232. The front end of the front support link 231 is hinged to the front connection lug 24. The rear end of the front support link 231 is hinged to the front end of the rear support link 232. The rear end of the rear support link 232 is hinged to the rear connection lug 25;

[0055] The rear section of the central support rod 1 is a threaded section 11. An adjusting nut 4 is arranged on the threaded section 11. The adjusting nut 4 is connected to the rear adjustment sleeve 22 of the last telescopic adjustment assembly 2;

[0056] The rear adjustment sleeves 22 of multiple telescopic adjustment assemblies 2 before and after are connected by an adjustment link 5;

[0057] There are two adjustment links 5. The two adjustment links 5 are arranged parallel to each other up and down;

[0058] A heating module connecting piece 6 is arranged at the hinged position of the front support link 231 and the rear support link 232. The support link mechanism 23 is connected to the heating module 3 through the heating module connecting piece 6;

[0059] The heating module 3 is of a right-angle structure. The right-angle heating module 3 includes a right-angle inner frame 31 and a right-angle outer frame 32. A heating wire groove 33 is arranged between the right-angle inner frame 31 and the right-angle outer frame 32. A heating wire is arranged in the heating wire groove 33;

[0060] The right-angle inner frame 31 is connected and arranged between the support link mechanisms 23 of multiple telescopic adjustment assemblies 2 before and after;

[0061] The right-angle inner frame 31 includes a horizontal plate 311 and a vertical plate 312. The right-angle outer frame 32 includes a horizontal cover plate 321 and a vertical cover plate 322. The horizontal cover plate 321 is arranged outside the horizontal plate 311. The vertical cover plate 322 is arranged outside the vertical plate 312.

[0062] Working principle:

[0063] When the square metal pipe fitting needs to be heated, the whole square adjustable tooling is inserted into the square metal pipe fitting, and the adjusting nut is rotated to drive the rear adjusting sleeve of the last telescopic adjusting component to slide back and forth. The rear adjusting sleeve of the last telescopic adjusting component drives the rear adjusting sleeves of the other telescopic adjusting components to slide back and forth synchronously through the adjusting connecting rod, so that the heating module installed on the supporting connecting rod mechanism moves in and out until the distance between the heating module and the square metal pipe fitting meets the requirements of electromagnetic induction heating.

[0064] In addition to the above embodiments, the present invention also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present invention.

Claims

1. An electromagnetic induction heating square adjustable tooling, characterized in that: It includes a central support rod (1), on which a plurality of front and rear telescopic adjustment components (2) are provided. A heating module (3) is arranged between the plurality of front and rear telescopic adjustment components (2). The inner and outer distances between the heating module (3) and the central support rod (1) can be adjusted through the telescopic adjustment components (2). The telescopic adjustment component (2) includes a front fixed sleeve (21) and a rear adjustment sleeve (22). Both the front fixed sleeve (21) and the rear adjustment sleeve (22) are sleeved on the central support rod (1). The front fixed sleeve (21) is fixedly connected to the central support rod (1). The rear adjustment sleeve (22) can slide back and forth along the central support rod (1). Four groups of support link mechanisms (23) are evenly arranged circumferentially between the front fixed sleeve (21) and the rear adjustment sleeve (22). The heating module (3) is fixedly arranged on the support link mechanism (23). The heating module (3) is of a right-angled structure. The right-angled heating module (3) includes a right-angled inner frame (31) and a right-angled outer frame (32). A heating wire groove (33) is arranged between the right-angled inner frame (31) and the right-angled outer frame (32). A heating wire is arranged in the heating wire groove (33). The rear section of the central support rod (1) is a threaded section (11). An adjustment nut (4) is arranged on the threaded section (11). The adjustment nut (4) is connected to the rear adjustment sleeve (22) of the last telescopic adjustment component (2). The rear adjustment sleeves (22) of the plurality of front and rear telescopic adjustment components (2) are connected by an adjustment link (5).

2. The electromagnetic induction heating square adjustable tooling according to claim 1, wherein: Four front connection ear seats (24) are evenly arranged on the outer peripheral wall of the front fixed sleeve (21). Four rear connection ear seats (25) are evenly arranged on the outer peripheral wall of the rear adjustment sleeve (22). The positions of the four front connection ear seats (24) and the four rear connection ear seats (25) correspond one by one. The support link mechanism (23) includes a front support link (231) and a rear support link (232). The front end of the front support link (231) is hinged to the front connection ear seat (24). The rear end of the front support link (231) is hinged to the front end of the rear support link (232). The rear end of the rear support link (232) is hinged to the rear connection ear seat (25).

3. An electromagnetic induction heating square adjustable tooling according to claim 2, characterized in that: A heating module connecting piece (6) is arranged at the hinged position of the front support link (231) and the rear support link (232). The support link mechanism (23) is connected to the heating module (3) through the heating module connecting piece (6).

4. An electromagnetic induction heating square adjustable tooling according to claim 1, characterized in that: The right-angled inner frame (31) is connected and arranged between the support link mechanisms (23) of the plurality of front and rear telescopic adjustment components (2).

5. An electromagnetic induction heating square adjustable tooling according to claim 1 or 4, characterized in that: The right-angled inner frame (31) includes a horizontal plate (311) and a vertical plate (312). The right-angled outer frame (32) includes a horizontal cover plate (321) and a vertical cover plate (322). The horizontal cover plate (321) is arranged outside the horizontal plate (311). The vertical cover plate (322) is arranged outside the vertical plate (312).

Images