CN1176226C

CN1176226C - Quenching apparatus of rod parts

Info

Publication number: CN1176226C
Application number: CNB01107504XA
Authority: CN
Inventors: 杨松鹤; 赵宏哲; 戚伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-03
Filing date: 2001-02-03
Publication date: 2004-11-17
Anticipated expiration: 2021-02-03
Also published as: CN1368559A

Abstract

The present invention relates to a quenching device of a rod member, which comprises a cooling pond 1, a heating device 2, a mechanical lifting and lowering mechanism 3 and a control circuit board 4, wherein the heating device 2 comprises a high-frequency power supply 41 and an electromagnetic induction coil 21 electrically connected with the high-frequency power supply 41. A quenching rod member penetrates through the electromagnetic induction coil 21 energized by high-frequency power supply from top to bottom after fed into a clamp 35 of the mechanical lifting and lowering mechanism 3; a small section of quenching rod member positioned in the coil 21 forms eddy current under the action of a high-frequency magnetic field, generates heat, rapidly reaches the quenching temperature and quickly enters cooling oil in the cooling pond 1; the clamp 35 loosens the rod member after the rod member integrally drops down to be positioned, and the rod member automatically falls into the cooling pond 1. The present invention has the advantages of quenching quality assurance, energy consumption reduction and high cost performance ratio. The present invention is especially suitable for the quenching of a rod member with unequal diameters.

Description

Quenching apparatus of rod parts

The present invention relates to the Equipment for Heating Processing of metal, relate in particular to a kind of Quenching apparatus of rod parts equipment that utilizes the high-frequency induction heating technology.

All be to adopt the indirect conduction heating of resistance furnace to Quenching apparatus of rod parts thermal treatment in the world at present, exist hot benefit low, energy consumption is big, and rod member is yielding, quality instability, the shortcoming of operating condition difference; Japan's JP52-70913A patent disclosure the technical scheme that adopts high-frequency induction heating that rod member is quenched, though the equipment level of automation of utilizing this technical scheme to produce is higher, energy consumption is big, costs an arm and a leg, facility investment and production cost are big, are not that general enterprise can bear.

The objective of the invention is to overcome the deficiencies in the prior art part and a kind of efficient, high-quality and quenching apparatus of rod parts cheaply are provided.

To achieve the above object of the invention, the present invention can realize by adopting following technical measures, design a kind of quenching apparatus of rod parts, comprise: be used to cool off cooling pool by the quenching rod member, be used to heat heating unit by the quenching rod member, be used for clamping and transmit the mechanical elevating mechanism that is entered heating unit by the quenching rod member, be used to control temperature and the stroke of mechanical elevating mechanism and the control circuit board of rising or falling speed of heating unit, wherein, heating unit comprises high frequency electric source in the control circuit board and the electromagnetic induction coil that is electrically connected with high frequency electric source, the quenching rod member be inserted into mechanical elevating mechanism clamp base and clamped after, pass the electromagnetic induction coil that passes to high frequency electric source from top to bottom, the a bit of quenching rod member that is positioned at coil forms eddy-current heating and reaches quenching temperature rapidly under the effect of the high frequency magnetic field that coil produced, then enter fast in the cooling fluid of cooling pool and carry out bright quenching, after treating that the whole decline of rod member puts in place, anchor clamps unclamp rod member, and rod member falls into cooling pool voluntarily.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural representation of quenching apparatus of rod parts of the present invention;

Fig. 2 is the vertical view (A) and the front view (B) of heater coil of the present invention;

Fig. 3 is the structural representation of anchor clamps of the present invention;

Fig. 4 is the functional-block diagram of anchor clamps trip control circuit of the present invention;

Fig. 5 is the functional-block diagram of inversion high frequency electric source of the present invention;

Fig. 6 is the basic circuit diagram of control circuit board 4 of the present invention.

The present invention is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1, quenching apparatus of rod parts comprises: be used to cool off the cooling pool 1 by the quenching rod member, be used to heat heating unit 2 by the quenching rod member, be used for clamping and transmit entering the mechanical elevating mechanism 3 of heating unit 2 and being used to control the stroke of heating unit 2 temperature and mechanical elevating mechanism 3 and the control circuit board 4 of rising or falling speed by the quenching rod member, wherein heating unit 2 comprises high frequency electric source in the control circuit board 4 and the electromagnetic induction coil 21 that is electrically connected with high frequency electric source, after the quenching rod member is admitted to the anchor clamps 35 of mechanical elevating mechanism 3, under the action of gravity of weight 353, clamp voluntarily, moved from top to bottom by the quenching rod member and to pass electromagnetic induction coil 21, when the lower end of quilt quenching rod member arrives electromagnetic induction coil 21, high frequency electric source in the control circuit board 4 is immediately to the big electric currents of electromagnetic induction coil 21 supply high frequencies (low pressure), the high-frequency current of coil 21 will produce high frequency magnetic field, and rod member is a ferromagnetic material, the a bit of quenching rod member that is positioned at coil 21 can produce eddy-current heating and reach quenching temperature rapidly under the effect of the high frequency magnetic field that coil 21 is produced, then enter fast in the cooling fluid of cooling pool 1 and carry out bright quenching, after treating that the whole decline of rod member puts in place, the bracer 37 that puts in place that is fixed on support 31 bottoms touches weight 353, make upwards skew of weight 353, drive movable block 352 moves anchor clamps 35 is unclamped, rod member just falls in the cooling pool 1 voluntarily, this moment, control circuit board 4 sent the big electric current of high frequency (low pressure) in the control signal disconnection electromagnetic induction coil 21 immediately, the hoisting appliance 3 back fast rise that descend are got back to zero position, timing to after repeat the work of next round Quenching apparatus of rod parts.

Be provided with the windlass of charging basket and lifting charging basket in cooling pool 1, charging basket forwards the discharging position to four or two position rotaries and is poured out by miniature windlass lifting.Therefore, rod member falls into cooling pool 1 back and is accepted by charging basket, when being accumulated to a certain amount of back and by windlass lifting discharging.Cooling pool 1 is equipped with an oil cooling pump 11 for the cooling oil sump in the pond, be used for the quenching oil in the oil sump 1 is stirred, cooling oil is circulated, to strengthen cooling performance, near electromagnetic induction coil, be provided with a fume extractor, the oil smoke that produces in the quenching process of can draining etc. in addition.

As shown in Figure 2, the electromagnetic induction coil 21 of described heating unit 2 is turned to spiral-shaped by the hollow copper tubing of 6 millimeters of diameters, its number of turns and diameter directly influence pass this coil by the temperature of quenching rod member and plant efficiency.Generalized case, the diameter of this spiral winding are 3 to 5 centimetres, and the number of turns is 3 to 6 circles, and the two ends of coil and two diameters are that 8 millimeters copper pipe is fixedlyed connected by soldering.For making the operation of coil long-term safety, water cooling is carried out in the water flowing of coil copper pipe inner chamber, and air cooling is carried out by mini-fan in the coil outside, water-cooled is partly by prolonging the water route to increase water resistance, owe water switch to guarantee the mutual safety of water power, to be provided with simultaneously, assurance water flowing simultaneously power supply could be worked.

As shown in Figure 1, the belt gear transmission system that described mechanical elevating mechanism 3 comprises support 31, is installed in the motor 32 on the support 31 and driven by motor 32, this transmission system converts rotatablely moving of follow-up pulley 33 and screw rod 34 to the translational motion that revolves the vertical direction of the nut 36 of joining with screw rod 34; Anchor clamps 35 are fixed in the bottom of nut 36; Therefore motor 32 can drive anchor clamps 35 vertically toward upper and lower motion by transmission system.As shown in Figure 3, described anchor clamps 35 comprise fixed block 351, movable block 352, weight 353, fixed block 351 is connected by rotating shaft 354 movable axis with movable block 352, weight 353 is fixed on the upper end of movable block 352 and outward-dipping, weight 353 is pressed to fixed block 351 by the weight drive movable block 352 of self, thereby automatically the rod member of sending into anchor clamps 35 is clamped, have positioning step 355 can make the rod member location in the anchor clamps 35.When anchor clamps 35 went downwards to the bottom of support 31, the bracer 37 that puts in place that is fixed on support 31 bottoms touched weight 353, made upwards skew of weight 353, and drive movable block 352 moves anchor clamps 35 are unclamped, and rod member just falls in the cooling pool 1 voluntarily.

The basic circuit diagram of described control circuit board 4 as shown in Figure 6, it is placed in the control rack 5, comprise anchor clamps trip control circuit and inversion high frequency electric source two portions, anchor clamps trip control circuit wherein contains: three sections frequency variant speed regulating circuits 42, through programming three sections speed are set, are used for different processing requirements the whole stroke of anchor clamps 35 being divided into three sections branch strokes with different linear velocities according to the shape and structure of quilt quenching rod member; Limit switch A, B, C and D are used to set each fragment position and transfer control signal, change the speed of certain section branch stroke; Upper and lower limit limiting protection switch is used to limit the stroke of anchor clamps 35, guarantees device security (Fig. 4).After rod member decline puts in place, cut off the high-frequency current of electromagnetic induction coil 21 immediately, motor 32 auto-reverse full speed are replied to put in place and are stopped, and start oil cooling pump 11 simultaneously, and oil pump 11 runs to setting-up time to be stopped automatically, again charging after anchor clamps 35 are replied and put in place, can set the regular hour is used for charging, setting-up time to after begin next round work automatically, all control loops form closed loops and carry out repeatedly automatically, also but manual regulation is prepared against needing of maintenance debugging.

Inversion high frequency electric source in the heating unit as shown in Figure 5, the production process of this high frequency electric source is as follows: three-phase main-frequency voltage becomes direct current through the SCR rectification circuit rectifying and pressure-regulating, again through filtering circuit filtering, make pulsating direct current more straight stable, after the inversion of thyristor inversion circuit trigger, is dc inverter stably high-frequency ac voltage, is transported to load electromagnetic induction coil 21 again to produce high frequency magnetic field; Other is provided with accessory power supply and powers to logic control, voltage controlled oscillator (VCO), and inverter circuit is regulated and controlled, and its result shows by panel.

Foregoing circuit partly is the applied in any combination of prior art, repeats no more here.

Compared with prior art, product of the present invention has following advantage: high-quality and efficient, not only improved the quenching quality, and also can reduce energy consumption on a large scale, reduce investment and production cost, improve operating condition and environment, and have the very considerable ratio of performance to price.

The used main unit of apparatus of the present invention embodiment, device model, parameter are as follows:

Circuit symbol title specifications and models

The BP1 frequency transformer

K1～K10 intermediate relay

RJ1～RJ3 thermo-relay

SL1～SL6 travel switch

SJ1～SJ2 switch

SB1～SB2 bullet switch

SA1～SA2 master switch

Q1～Q2 air switch

The SC1 button

H1～H6 pilot lamp

The D1 cooling pump

The D2 oil injection pump

The D motor

Claims

1, a kind of quenching apparatus of rod parts, comprise: be used to cool off by the cooling pool of quenching rod member (1), be used to heat, be used for clamping and transmit being entered the mechanical elevating mechanism (3) of heating unit (2) and being used to control the stroke of heating unit (2) temperature and mechanical elevating mechanism (3) and the control circuit board (4) of rising or falling speed, it is characterized in that by the quenching rod member by the heating unit of quenching rod member (2):

The electromagnetic induction coil (21) that heating unit (2) comprises the high frequency electric source in the control circuit board (4) and is electrically connected with high frequency electric source, after the quenching rod member is admitted to the anchor clamps (35) of mechanical elevating mechanism (3), pass the electromagnetic induction coil (21) that passes to high frequency electric source from top to bottom, the a bit of quenching rod member that is positioned at coil (21) forms eddy-current heating and reaches quenching temperature rapidly under the effect of the high frequency magnetic field that coil (21) is produced, then enter in the cooling fluid of cooling pool (1) fast, after treating that the whole decline of rod member puts in place, anchor clamps (35) unclamp rod member, and rod member falls into cooling pool (1) voluntarily.

2, quenching apparatus of rod parts according to claim 1, it is characterized in that: the electromagnetic induction coil (21) of described heating unit (2) is turned to spiral-shaped by hollow copper tubing, the diameter of this spiral winding is 3 to 5 centimetres, the number of turns is 3 to 6 circles, water cooling is carried out in the water flowing of coil copper pipe inner chamber, and air cooling is carried out by mini-fan in the coil outside.

3, quenching apparatus of rod parts according to claim 1, it is characterized in that: described mechanical elevating mechanism (3) comprises support (31), is installed in the motor (32) of support (31) and the belt gear transmission system that is driven by motor (32), and this transmission system converts rotatablely moving of follow-up pulley (33) and screw rod (34) with screw rod (34) to revolves the translational motion of the vertical direction of the nut (36) of joining; Anchor clamps (35) are fixed in the bottom of nut (36), these anchor clamps (35) comprise fixed block (351), movable block (352), weight (353), fixed block (351) is connected by rotating shaft (354) movable axis with movable block (352), and weight (353) is fixed on the upper end of movable block (352) and outward-dipping; Anchor clamps (35) clamp voluntarily by the weight of weight (353), when anchor clamps (35) go downwards to the bottom of support (31), the bracer that puts in place (37) that is fixed on support (31) bottom touches weight (353), makes weight (353) skew, drives movable block (352) anchor clamps (35) are unclamped.

4, quenching apparatus of rod parts according to claim 1, it is characterized in that: described control circuit board (4) is placed in the control rack (5), contain: three sections frequency variant speed regulating circuits (42) are used for according to the shape and structure of quilt quenching rod member the whole stroke of anchor clamps (35) being divided into three sections branch strokes with different linear velocities; Limit switch is used for transfer control signal, changes the speed of certain section branch stroke; Upper and lower limit limiting protection switch is used for the stroke of setting clamp (35), guarantees device security.

5, quenching apparatus of rod parts according to claim 1, it is characterized in that: the production process of described high frequency electric source is as follows: three-phase main-frequency voltage becomes direct current through the rectifying circuit rectifying and pressure-regulating, again through filtering circuit filtering, make pulsating direct current more steady, after inverter circuit, is dc inverter stably high-frequency ac voltage, is transported to electromagnetic induction coil (21) again to produce high frequency magnetic field; Logic control, voltage controlled oscillator (VCO), accessory power supply are regulated and are controlled inverter circuit, and its result shows by panel.

6, quenching apparatus of rod parts according to claim 1, it is characterized in that: described cooling pool (1) is the cooling oil sump, and an oil cooling pump (11) is installed in cooling oil sump (1), is used for the quenching oil in the oil sump (1) is stirred, cooling oil is flowed, to strengthen cooling performance.

7, quenching apparatus of rod parts according to claim 1 is characterized in that: establish a fume extractor near electromagnetic induction coil (21), the oil smoke that produces when quenching to drain.

8, quenching apparatus of rod parts according to claim 1 is characterized in that: be provided with charging basket and promote the windlass of charging basket in cooling pool (1), charging basket is used to hold the rod member after the quenching.