CN215144046U - Rolling resistance uniform heating structure - Google Patents

Abstract

The utility model discloses a rolling resistance uniform heating structure, which comprises a bottom plate, a support flat plate, a sliding mechanism and a rolling electrode component, wherein the support flat plate is arranged on the upper side of the bottom plate in parallel, the height of the support flat plate relative to the bottom plate can be adjusted, and the support flat plate is made of insulating materials; the sliding mechanism comprises guide rails and sliding blocks, the two guide rails are parallel and are arranged on the upper side of the bottom plate respectively adjacent to the two long edges of the supporting flat plate, the guide rails extend along the length direction of the supporting flat plate, and the sliding blocks are arranged on the guide rails in a sliding manner; the rolling electrode assembly comprises a cylindrical rolling electrode, two ends of the rolling electrode are respectively supported on sliding blocks on two sides of the supporting flat plate so as to support the rolling electrode above the supporting flat plate, the rolling electrode can rotate around the axis of the rolling electrode and can be electrically connected with an external power supply, and an even number of rolling electrodes are arranged at intervals along the extending direction of the guide rail. The utility model discloses a rolling resistance uniform heating structure can avoid causing the damage to the steel sheet surface, can adjust the relative height of electrode and steel sheet.

Description

Rolling resistance uniform heating structure

Technical Field

The utility model belongs to the technical field of the metal heating, especially, relate to a rolling resistance uniform heating structure.

Background

The steel plate has good comprehensive performance, so the steel plate is widely applied to the field of automobiles. The automobile steel plate is mostly formed by adopting a high-temperature hot stamping technology, so that the forming performance of the material is improved, and the steel plate can be subjected to quenching heat treatment while being stamped. The steel plate needs to be heated to the stamping temperature before stamping, and the stamping temperature commonly used in the domestic automobile field is 850-950 ℃. At present, a steel plate is placed in a heating furnace, and a workpiece is heated to a required temperature by a heat conduction mode, but the heating by the furnace has the defects of long heating time, low efficiency, large occupied area, high investment cost and the like.

The resistance heating utilizes the heat that the joule heat effect of conductor produced to heat material and work piece, can heat the work piece to required punching press temperature rapidly in the short time, has advantages such as rate of heating is fast, the temperature is high, equipment is simple, can effectively avoid adopting the shortcoming of stove heating, therefore by wide application in vapour sheet hot stamping field.

When the steel plate with regular shape and uniform cross section is subjected to resistance heating, the temperature of each position of the steel plate is uniformly distributed after current is introduced. However, the shape of the steel plate in actual production is irregular, and for the steel plate with uneven cross section, when current is applied, the uneven cross section causes uneven distribution of current density inside the steel plate, so that temperature difference exists at different positions of the steel plate. The existence of the temperature difference can lead to different deformation capacities of all parts of the steel plate during hot stamping, and the surface of a stamped product has the defects of cracks and the like, thereby reducing the yield of stamped parts.

Some direct resistance heating equipment among the prior art, to the steel sheet of the even grow of cross section from one end to the other end, through the slip speed of the control unit control sliding electrode, measure the temperature of each position through the thermocouple, feed back measured temperature to the control unit, adjust sliding electrode's velocity of motion by the control unit, can realize that heating temperature is adjustable, can effectively improve the uneven phenomenon of steel sheet each position department temperature.

However, the above direct resistance heating apparatus is only for a steel sheet having a uniformly changed cross section, and for a steel sheet having a non-uniformly changed cross section, a temperature difference is likely to occur at each position of the steel sheet after heating; in addition, the sliding electrode is easy to damage the surface of the workpiece to be heated, which causes the quality of the product to be reduced and economic loss.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a rolling resistance uniform heating structure, can avoid treating the heating workpiece surface and cause the damage, protect the workpiece surface quality of waiting to heat well, guarantee product quality, and can adjust the relative height of electrode and steel sheet, guarantee electrode and steel sheet full contact all the time, avoid the uneven temperature distribution who causes because of the steel sheet thickness difference, can be applicable to the inhomogeneous steel sheet of cross section, it is even to guarantee each position temperature distribution of steel sheet, guarantee heating efficiency and heating effect, moreover, the steam generator is simple in structure, high reliability, therefore, the clothes hanger is strong in practicability.

In order to achieve the above object, the utility model provides a rolling resistance uniform heating structure, a serial communication port, rolling resistance uniform heating structure includes: a base plate; the supporting flat plate is arranged on the upper side of the bottom plate in parallel, the height of the supporting flat plate relative to the bottom plate can be adjusted, and the supporting flat plate is made of an insulating material and can be used for supporting and placing a steel plate; the sliding mechanism comprises guide rails and sliding blocks, the two guide rails are parallel and are arranged on the upper side of the bottom plate respectively adjacent to the two long edges of the supporting flat plate, the guide rails extend along the length direction of the supporting flat plate, and the sliding blocks are arranged on the guide rails in a sliding manner; and the rolling electrode assembly comprises cylindrical rolling electrodes, two ends of each rolling electrode are respectively supported on the sliding blocks on two sides of the supporting flat plate so as to support the rolling electrodes above the supporting flat plate, the rolling electrodes can rotate around the axes of the rolling electrodes and can be electrically connected with an external power supply, and an even number of rolling electrodes are arranged at intervals along the extending direction of the guide rail.

In one example, the rolling electrode assembly further comprises an electrode support, a connecting piece and a conductive brush, the electrode support is fixedly arranged at the top of each sliding block, and two ends of the rolling electrode are respectively and rotatably supported on the electrode supports on two sides of the supporting flat plate; the connecting piece is parallel to and adjacent to the electrode support on one side of the supporting flat plate and is fixedly arranged, one end of the conductive brush is fixedly connected with the connecting piece, the other end of the conductive brush is abutted against the rolling electrode, and the rolling electrode is electrically connected with an external power supply through the conductive brush.

In one example, the rolling electrode assembly further includes a bearing, the electrode holder is provided with a mounting opening, an axial direction of the mounting opening is perpendicular to a length direction of the support plate, the bearing is mounted in the mounting opening, and an end of the rolling electrode is connected to the bearing so as to rotatably support the end of the rolling electrode on the electrode holder.

In one example, the sliding mechanism further comprises a sliding driving device, wherein the sliding driving device is in transmission connection with the sliding block and is used for driving the sliding block to move along the guide rail in a sliding mode; the rolling resistance uniform heating structure further comprises a temperature detection device and a control device, wherein the temperature detection device is used for detecting the temperature distribution of each position of the steel plate, and the control device is connected with the temperature detection device and the sliding driving device and can control the speed of the sliding block driving the rolling electrode to roll according to the temperature distribution of each position of the steel plate.

In one example, the rolling resistance uniform heating structure further comprises a control circuit, wherein the control circuit is arranged between the rolling electrode and the external power supply and can control the rolling electrode to be connected with or disconnected from a positive electrode or a negative electrode of the external power supply.

In one example, the rolling resistance uniform heating structure further comprises an adjustable supporting mechanism, the adjustable supporting mechanism comprises a plurality of supporting columns, one end of each supporting column is connected with the bottom plate, the other end of each supporting column is connected with the supporting flat plate, so that the supporting flat plate is supported on the upper side of the bottom plate, the supporting columns can move in a telescopic mode relative to the bottom plate along a direction perpendicular to the bottom plate, and the supporting flat plates are driven to move up and down to adjust the height of the supporting flat plate relative to the bottom plate.

In one example, the periphery of the supporting column is provided with threads, and the supporting column is driven to move telescopically relative to the bottom plate by adjusting the number of threads for screwing the supporting column into the bottom plate.

In one example, the adjustable support mechanism includes a drive cylinder coupled to the support column; the rolling resistance uniform heating structure further comprises a position detection device and a control device, wherein the position detection device is used for detecting the position of the supporting plate, and the control device is connected with the position detection device and the driving cylinder and can control the driving cylinder to drive the supporting column to do telescopic motion.

In one example, the support plate is made of a ceramic material.

In one example, the sliding mechanism further comprises an insulating plate made of a high-temperature-resistant insulating material, the insulating plate is fixedly arranged on the top of the sliding block, and the rolling electrode assembly is fixedly supported on the sliding block through the insulating plate.

Through the utility model provides a rolling resistance uniform heating structure can bring following beneficial effect:

1. the contact between the electrode and the surface of the workpiece to be heated is changed into rolling contact through the rolling electrode, so that the contact stress and the friction force between the electrode and the surface of the workpiece to be heated are reduced, the surface of the workpiece to be heated can be effectively prevented from being damaged in the movement process, the surface quality of the workpiece to be heated is well protected, the product quality is ensured, the abrasion to the rolling electrode is reduced, and the service life of the rolling electrode is prolonged; can adjust the relative height of rolling electrode and steel sheet through supporting the flat board, can avoid among the heating process because the inhomogeneous rolling electrode that leads to of steel sheet thickness and the unable abundant contact of steel sheet, guarantee that the rolling electrode closely laminates with the steel sheet all the time at the rolling in-process, avoid the temperature distribution inequality because of the steel sheet thickness difference causes, realize the direct resistance heating to the different thickness steel sheets, can be applicable to the inhomogeneous steel sheet of cross section, guarantee that each position temperature distribution of steel sheet is even, guarantee heating efficiency and heating effect, improve product quality, moreover, the steam generator is simple in structure, high reliability, therefore, the clothes hanger is strong in practicability.

2. The slider is linear motion along the guide rail, and electrode support and slider keep synchronous motion, and rolling electrode is rolling motion under the drive of slider and electrode support, and rolling electrode passes through the connecting piece and leads the electric brush circular telegram, realizes the resistance heating to the steel sheet, and simple structure connects reliable and stable, makes things convenient for the dismouting to use, guarantees the reliable and stable heating to the steel sheet, and the practicality is strong.

3. The rolling speed of the rolling electrode is adjusted according to the temperature distribution of each position of the steel plate, the heating temperature of each position of the steel plate can be adjusted, the heating temperature distribution of the steel plate is more uniform, the condition that the temperature distribution of each position of the steel plate is uneven is effectively improved, the heating effect of the steel plate is improved, and the practicability is high.

4. Through the break-make and positive negative pole of control rolling electrode, a plurality of rolling electrodes respectively with the steel sheet circular telegram can form different current return circuits with the different positions of steel sheet, can heat respectively to the different position regions of steel sheet, be favorable to improving the heating efficiency and the heating effect to the steel sheet, can be applicable to the heating of multiple complicated shape steel sheet moreover, application scope is wide, and the practicality is strong.

5. Through screw thread drive support column concertina movement, simple structure, support column concertina movement is steadily difficult for rocking, and the screw thread has auto-lock kinetic energy moreover, and support column bearing capacity is stronger, and is more reliable and more stable to the support of supporting the flat board, guarantees the heating effect to the steel sheet, and the practicality is strong.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of a rolling resistance uniform heating structure according to the present invention;

fig. 2 is a top view of a rolling resistance uniform heating structure according to the present invention;

fig. 3 is a front view of a rolling resistance uniform heating structure of the present invention;

fig. 4 is a schematic diagram of a local enlarged structure of a rolling resistance uniform heating structure according to the present invention.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1 to 4, an embodiment of the present invention provides a rolling resistance uniform heating structure, which includes a bottom plate 1, a supporting plate 2, a sliding mechanism 3 and a rolling electrode assembly 4, wherein the supporting plate 2 is disposed in parallel on the top side of the bottom plate 1, the height of the supporting plate 2 relative to the bottom plate 1 can be adjusted, and the supporting plate 2 is made of an insulating material and can be used for supporting and placing a steel plate 200; the sliding mechanism 3 comprises a guide rail 31 and a sliding block 32, the two guide rails 31 are arranged on the upper side of the bottom plate 1 in parallel and adjacent to the two long edges of the support flat plate 2 respectively, the guide rail 31 extends along the length direction of the support flat plate 2, and the sliding blocks 32 are arranged on the guide rails 31 in a sliding manner; the rolling electrode assembly 4 includes a cylindrical rolling electrode 41, two ends of the rolling electrode 41 are respectively supported by the sliders 32 on two sides of the support plate 2 to support the rolling electrode 41 above the support plate 2, the rolling electrode 41 can rotate around its axis and can be electrically connected to an external power supply, and an even number of rolling electrodes 41 are arranged at intervals along the extending direction of the guide rail 31.

By arranging the rolling electrode 41, the contact between the electrode and the surface of the workpiece to be heated is changed into rolling contact, so that the contact stress and the friction force between the electrode and the surface of the workpiece to be heated are reduced, the damage to the surface of the workpiece to be heated in the motion process can be effectively avoided, the surface quality of the workpiece to be heated is well protected, the product quality is ensured, the abrasion to the rolling electrode 41 is reduced, and the service life of the rolling electrode 41 is prolonged; through setting up the support plate 2, can adjust the relative height of rolling electrode 41 and steel sheet 200, can avoid among the heating process because the inhomogeneous rolling electrode 41 that leads to of steel sheet 200 thickness and the unable abundant contact of steel sheet 200, guarantee that rolling electrode 41 closely laminates with steel sheet 200 throughout at the rolling in-process, avoid the temperature distribution inequality because of the different causes of steel sheet 200 thickness, realize the direct resistance heating to different thickness steel sheet 200, can be applicable to the inhomogeneous steel sheet 200 of cross section, guarantee that the temperature distribution of each position of steel sheet 200 is even, guarantee heating efficiency and heating effect, improve product quality, moreover, the steam generator is simple in structure, high reliability, therefore, the clothes hanger is strong in practicability.

In one embodiment, the bottom plate 1 may be made of steel, aluminum or other materials; the guide rail 41 is connected to the base plate 1 by bolts. The rolling electrode 41 is a cylindrical copper electrode.

Specifically, the rolling electrode assembly 4 further includes an electrode support 42, a connecting member 43, and a conductive brush 44, the electrode support 42 is fixedly disposed on the top of each slider 32, and two ends of the rolling electrode 41 are rotatably supported on the electrode supports 42 on two sides of the support plate 2, respectively; the connecting piece 43 is fixedly arranged in parallel with the electrode support 42 adjacent to one side of the support flat plate 2, one end of the conductive brush 44 is fixedly connected with the connecting piece 43, the other end of the conductive brush is abutted against the rolling electrode 41, and the rolling electrode 41 is electrically connected with an external power supply through the conductive brush 44. The sliding block 32 moves linearly along the guide rail 31, the electrode support 42 and the sliding block 32 keep moving synchronously, the rolling electrode 41 is driven by the sliding block 32 and the electrode support 42 to move in a rolling mode, the rolling electrode 41 is electrified through the connecting piece 43 and the conductive brush 44, resistance heating of the steel plate 200 is achieved, the structure is simple, connection is stable and reliable, disassembly and assembly are convenient to use, stable and reliable heating of the steel plate 200 is guaranteed, and practicability is high.

In a specific embodiment, the connecting member 43 is fixedly disposed on the top of the sliding block 32, the top of the connecting member 43 is provided with an arc-shaped groove 431 adapted to the outer periphery of the end portion of the rolling electrode 41, the conductive brush 44 is disposed in the arc-shaped groove 431, and the end portion of the rolling electrode 41 is rotatably disposed in the arc-shaped groove 431 and is in close contact with the conductive brush 44; the copper bar or the woven net is fixed on the connecting piece 43 through bolts.

Specifically, the rolling electrode assembly 4 further includes a bearing 45, the electrode holder 42 is provided with a mounting opening, an axial direction of the mounting opening is perpendicular to a length direction of the support plate 2, the bearing 45 is mounted in the mounting opening, and an end portion of the rolling electrode 41 is connected with the bearing 45 so as to rotatably support the end portion of the rolling electrode 41 on the electrode holder 42. Through setting up bearing 45, effectively reduce the rolling resistance of rolling electrode 41, and then reduce rolling friction of rolling electrode 41, further avoid rolling electrode 41 motion in-process to cause the damage to steel sheet 200 surface, protection steel sheet 200 surface quality reduces the wearing and tearing to rolling electrode 41 simultaneously, extension rolling electrode 41 life, and the practicality is strong.

Specifically, the sliding mechanism 3 further comprises a sliding driving device, which is in transmission connection with the sliding block 32 and is used for driving the sliding block 32 to move along the guide rail 31 in a sliding manner; the rolling resistance uniform heating structure further comprises a temperature detection device and a control device, wherein the temperature detection device is used for detecting the temperature distribution of each position of the steel plate 200, and the control device is connected with the temperature detection device and the sliding driving device and can control the speed of the sliding block 32 driving the rolling electrode 41 to roll according to the temperature distribution of each position of the steel plate 200. The rolling speed of the rolling electrode 41 is adjusted according to the temperature distribution of each position of the steel plate 200, and the heating temperature of each position of the steel plate 200 can be adjusted, so that the heating temperature distribution of the steel plate 200 is more uniform, the condition that the temperature distribution of each position of the steel plate 200 is uneven is effectively improved, the heating effect of the steel plate 200 is improved, and the practicability is high.

In a particular embodiment, the temperature detection means comprises a temperature sensor.

Specifically, the rolling resistance uniform heating structure further includes a control circuit, and the control circuit is disposed between the rolling electrode 41 and an external power supply and can control the rolling electrode 41 to be connected or disconnected with or from a positive electrode or a negative electrode of the external power supply. Through the on-off and positive and negative poles of the control rolling electrodes 41, the plurality of rolling electrodes 41 are respectively electrified with the steel plate 200 to form different current loops with different positions of the steel plate 200, and can respectively heat different position areas of the steel plate 200, so that the heating efficiency and the heating effect of the steel plate 200 are improved, the heating device is suitable for heating various steel plates 200 with complex shapes, and has wide application range and strong practicability.

In one embodiment, the rolling electrode assembly 4 includes four rolling electrodes 41, and two pairs of rolling electrodes 41 may heat the steel sheet 200 having a symmetrical length direction and a non-uniform cross-sectional area. The specific heating process comprises the following steps:

first, the steel plate 200 to be heated is placed on the top surface of the support plate 2, and the height of the support plate 2 is adjusted so that the rolling electrode 41 is in close contact with the steel plate 200.

A first heating stage: rolling electrode 41A is a positive electrode, and rolling electrode 41B is a negative electrode corresponding to rolling electrode 41A; rolling electrode 41D is a positive electrode, and rolling electrode 41C is a negative electrode corresponding to rolling electrode 41D; rolling electrode 41B and rolling electrode 41C are at the same potential. Before heating, the positive rolling electrode 41A and the positive rolling electrode 41D are respectively fixed at two ends of the steel plate 200, the negative rolling electrode 41B and the negative rolling electrode 41C are respectively arranged near the positive rolling electrode 41A and the positive rolling electrode 41D, and short circuit caused by mutual contact of the positive rolling electrode 41A and the negative rolling electrode 41B and the negative rolling electrode 41C and the positive rolling electrode 41D is avoided; then, positive rolling electrode 41A and negative rolling electrode 41B are electrified to form a current loop, and negative rolling electrode 41C and positive rolling electrode 41D are electrified to form a current loop, and the input voltages of the two electrodes are ensured to be the same. While the negative rolling electrode 41B and the negative rolling electrode 41C are driven by the slider 32 to move slowly towards the middle, the steel plate 200 between the positive rolling electrode 41A and the negative rolling electrode 41B is heated, and the steel plate 200 between the negative rolling electrode 41C and the positive rolling electrode 41D is heated; before the rolling electrodes 41B and 41C move to the parallel section of the steel plate 200, the temperature of the steel plate 200 between the positive rolling electrode 41A and the negative rolling electrode 41B and the temperature of the steel plate 200 between the negative rolling electrode 41C and the positive rolling electrode 41D are adjusted by the rolling speed of the rolling electrodes 41, and the moving speed of the rolling electrodes 41 can be controlled to make the temperature of the steel plate 200 at the section change part more uniform because the cross sections of the steel plates 200 at the two end positions are uniformly reduced. The first stage of heating corresponds to heating the steel sheet 200 at a large (relative to the parallel) cross section in advance to compensate for the heat.

And (3) heating in a second stage: after the rolling electrode 41B and the rolling electrode 41C move to the parallel section of the steel plate 200, the control circuit quickly cuts off the rolling electrode 41B and the rolling electrode 41C, and converts the polarity of the rolling electrode 41D, the rolling electrode 41D is converted into a negative electrode, and the positive rolling electrode 41A and the negative rolling electrode 41D serve as a pair of electrodes to continuously heat the steel plate 200, thereby heating the whole steel plate 200.

Specifically, the rolling resistance uniform heating structure further comprises an adjustable support mechanism, the adjustable support mechanism comprises a plurality of support columns 51, one ends of the support columns 51 are connected with the bottom plate 1, and the other ends of the support columns 51 are connected with the support flat plate 2, so that the support flat plate 2 is supported on the upper side of the bottom plate 1; and the supporting column 51 can move telescopically relative to the bottom plate 1 along the direction vertical to the bottom plate 1, and drives the supporting flat plate 2 to move up and down so as to adjust the height of the supporting flat plate 2 relative to the bottom plate 1. Support and drive through support column 51 and support dull and stereotyped 2 elevating movement, simple structure, job stabilization is reliable, and the practicality is strong.

Specifically, the periphery of the supporting column 51 is provided with threads, and the supporting column 51 is driven to move telescopically relative to the base plate 1 by adjusting the number of threads for screwing the supporting column 51 into the base plate 1. Through screw thread drive support column 51 concertina movement, simple structure, support column 51 concertina movement is steadily difficult for rocking, and the screw thread has auto-lock kinetic energy moreover, and support column 51 bearing capacity is stronger, and is more reliable and more stable to the support that supports dull and stereotyped 2, guarantees the heating effect to steel sheet 200, and the practicality is strong.

Specifically, the adjustable supporting mechanism further comprises a driving cylinder, and the driving cylinder is connected with the supporting column 51; the rolling resistance uniform heating structure further comprises a position detection device, the position detection device is used for detecting the position of the supporting flat plate 2, and the control device is connected with the position detection device and the driving cylinder and can control the driving cylinder to drive the supporting column 51 to move telescopically relative to the bottom plate 1. The driving cylinder drives the supporting column 51 to do telescopic motion, so that the structure is simple, and the work is stable and reliable; realize the automatic control to supporting 2 high adjustments of flat board through position detection device and controlling means, the high adjustment of supporting flat board 2 is accurate, and degree of automation is high, and operation convenient to use, labour saving and time saving, the practicality is strong.

In one embodiment, the position detection device includes a position sensor, and the control device includes a PLC (Programmable Logic Controller).

In particular, the support plate 2 is made of a ceramic material. Ceramic material has fabulous insulating nature and heat resistance, can effectively insulate between bottom plate 1 and the steel sheet 200, can avoid because the electric current greatly makes bottom plate 1 even electricity cause the accident among the resistance heating process, effectively guarantees to go on the safe and reliable of the direct resistance heating of steel sheet 200, and ceramic material is hard moreover, and corrosion resistance is good, and the wearability is good, difficult wearing and tearing, long service life, the practicality is strong.

Specifically, the sliding mechanism 3 further includes an insulating plate 33, the insulating plate 33 is made of a high-temperature-resistant insulating material, the insulating plate 33 is fixedly disposed on the top of the sliding block 32, and the rolling electrode assembly 4 is fixedly supported on the top of the sliding block 32 through the insulating plate 33. Carry out insulation processing through insulation board 33 between rolling electrode subassembly 4 and the slider 32, high temperature resistant insulating material can effectively guarantee the insulation between rolling electrode subassembly 4 and the slider 32, avoids causing the incident because of the company's of electricity, guarantees to go on steel sheet 200's direct resistance heating's safe and reliable, long service life moreover, and the practicality is strong.

In one embodiment, the insulating plate 33 and the slider 32 are fastened by bolts, and the electrode holder 42 and the insulating plate 33 are fastened by bolts. The high temperature resistant insulating material can be PEI (Polyetherimide, which is a thermoplastic engineering resin with excellent mechanical property, electrical insulating property, irradiation resistance, high and low temperature resistance and wear resistance), acrylic, PEEK (polyetheretherketone, which is a special engineering plastic with excellent properties such as high temperature resistance, self-lubrication, easy processing and high mechanical strength), and the like.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A rolling resistance uniform heating structure, comprising:

a base plate;

the supporting flat plate is arranged on the upper side of the bottom plate in parallel, the height of the supporting flat plate relative to the bottom plate can be adjusted, and the supporting flat plate is made of an insulating material and can be used for supporting and placing a steel plate;

the sliding mechanism comprises guide rails and sliding blocks, the two guide rails are parallel and are arranged on the upper side of the bottom plate respectively adjacent to the two long edges of the supporting flat plate, the guide rails extend along the length direction of the supporting flat plate, and the sliding blocks are arranged on the guide rails in a sliding manner; and

the rolling electrode assembly comprises cylindrical rolling electrodes, two ends of each rolling electrode are respectively supported on the sliding blocks on two sides of the supporting flat plate so as to support the rolling electrodes above the supporting flat plate, the rolling electrodes can rotate around the axes of the rolling electrodes and can be electrically connected with an external power supply, and an even number of rolling electrodes are arranged at intervals along the extending direction of the guide rail.

2. The rolling resistance uniform heating structure according to claim 1, wherein the rolling electrode assembly further comprises an electrode support, a connecting member and a conductive brush, the electrode support is fixedly arranged at the top of each sliding block, and two ends of the rolling electrode are respectively rotatably supported on the electrode supports at two sides of the supporting plate; the connecting piece is parallel to and adjacent to the electrode support on one side of the supporting flat plate and is fixedly arranged, one end of the conductive brush is fixedly connected with the connecting piece, the other end of the conductive brush is abutted against the rolling electrode, and the rolling electrode is electrically connected with an external power supply through the conductive brush.

3. The rolling resistance uniform heating structure according to claim 2, wherein the rolling electrode assembly further comprises a bearing, the electrode support is provided with a mounting opening, the axial direction of the mounting opening is perpendicular to the length direction of the support flat plate, the bearing is mounted in the mounting opening, and the end of the rolling electrode is connected with the bearing so as to rotatably support the end of the rolling electrode on the electrode support.

4. The rolling resistance uniform heating structure according to claim 1, wherein the sliding mechanism further comprises a sliding driving device, the sliding driving device is in transmission connection with the sliding block and is used for driving the sliding block to move along the guide rail in a sliding manner; the rolling resistance uniform heating structure further comprises a temperature detection device and a control device, wherein the temperature detection device is used for detecting the temperature distribution of each position of the steel plate, and the control device is connected with the temperature detection device and the sliding driving device and can control the speed of the sliding block driving the rolling electrode to roll according to the temperature distribution of each position of the steel plate.

5. The rolling resistance uniform heating structure according to claim 1, further comprising a control circuit, wherein the control circuit is disposed between the rolling electrode and the external power source and can control the rolling electrode to be connected or disconnected with a positive electrode or a negative electrode of the external power source.

6. The rolling resistance uniform heating structure according to claim 1, further comprising an adjustable supporting mechanism, wherein the adjustable supporting mechanism comprises a plurality of supporting columns, one end of each supporting column is connected with the bottom plate, the other end of each supporting column is connected with the supporting plate, so as to support the supporting plate on the upper side of the bottom plate, and the supporting columns can move relative to the bottom plate in a telescopic manner along a direction perpendicular to the bottom plate, so as to drive the supporting plate to move up and down to adjust the height of the supporting plate relative to the bottom plate.

7. The rolling resistance uniform heating structure according to claim 6, wherein the support column is provided with threads on the periphery thereof, and the support column is driven to move telescopically relative to the base plate by adjusting the number of threads for screwing the support column into the base plate.

8. The rolling resistance uniform heating structure according to claim 6, wherein the adjustable supporting mechanism comprises a driving cylinder, and the driving cylinder is connected with the supporting column; the rolling resistance uniform heating structure further comprises a position detection device and a control device, wherein the position detection device is used for detecting the position of the supporting plate, and the control device is connected with the position detection device and the driving cylinder and can control the driving cylinder to drive the supporting column to do telescopic motion.

9. A rolling resistance uniform heating structure as claimed in claim 1, wherein said support plate is made of ceramic material.

10. A rolling resistance uniform heating structure as claimed in any one of claims 1 to 9, wherein said sliding mechanism further comprises an insulating plate made of a high temperature resistant insulating material, said insulating plate being fixedly disposed on top of said slider, said rolling electrode assembly being fixedly supported to said slider through said insulating plate.

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