CN207066106U - Metal casting compression smelting apparatus - Google Patents

Abstract

The utility model discloses metal casting compression smelting apparatus, it includes frame (1), stripper plate (2) is provided with frame (1)；Encircling rope (3), hydraulic cylinder (5) and lifter plate (6) are provided with stripper plate (2)；Lifter plate (6) side is provided with chute (8), and chute (8) side is provided with conveyer belt (21)；Frame (1) side is provided with furnace shell (22), heating element heater (23), heat-insulation layer (24) and crucible (25) are provided with furnace shell (22), crucible (25) bottom is disposed with drop-bottom (26), swivel plate (27) and lifting device (28)；The furnace shell (22) is externally connected with bell (29) and control system (30).The utility model can not only improve efficiency, improve compression effectiveness, make it is heated evenly and environmental protection, also with structural stability it is good, bind active force is balanced, weight capacity preferably, mechanical flexibility is preferable, relatively labor-saving and security is higher the advantages of.

Description

Metal casting compression smelting apparatus

Technical field

It the utility model is related to a kind of metal casting compression smelting apparatus of casting industry.

Background technology

Metal casting is to put metal to be smelted into a furnace to meet necessarily required liquid and pour enter in casting mold, through cooling The technical process for the casting that predetermined shape, size and performance are obtained after handling is solidified, leveled, levels some metals after processing Chip can also be collected for carrying out metal casting next time, and these chips generally require and are compressed into bulk, subtract Behind space between few chip, it is put into the crucible of casting, still, existing chip compression set is generally single vertical Formula is compressed, and it is slower to be compressed into the efficiency of bulk, and extracts that finished product is block inconvenient, and the shape after compressing is used in smelting furnace Also more inconvenient during melting, the effect of compression is poor；And metal is general using by metallic monolith thing loading crucible in melting Afterwards, it is put into the coal stove device of burning and is heated, until the metal object in crucible is smelted into liquid, and is placed in coal stove and fires Coal cinder is influenceed by external force such as wind during burning, makes in-furnace temperature uneven, and metal uneven heating in crucible is even, and the thing such as coal cinder The burning of matter can produce toxic gas and waste is expected admittedly, also pollute the environment.Therefore, the compression melting of existing casting industry Device is there is efficiency compared with the problem of slow, compression effectiveness is poor, uneven heating uniform pollution environment.

Utility model content

The purpose of this utility model is, there is provided a kind of metal casting compression smelting apparatus.The utility model can not only Improve efficiency and compression effectiveness, also have it is heated evenly with environmental pollution it is small the advantages of.

The technical solution of the utility model：Metal casting is provided with extruding with smelting apparatus, including frame is compressed in frame Plate；Stripper plate outer ring is wound with encircling rope, binds rope both sides and is respectively connected with motor；The stripper plate upper end is provided with hydraulic cylinder, squeezes Pressing plate lower end is connected with lifter plate；Lifter plate side is provided with push rod, and opposite side is provided with chute, and chute side is provided with transmission Band；The frame side is provided with furnace shell, and furnace shell inwall is provided with heating element heater, is connected between furnace shell inwall and heating element heater Heat-insulation layer；Crucible is provided with the furnace shell, crucible bottom is connected with drop-bottom；Drop-bottom bottom is connected with swivel plate, rotation Plate bottom is connected with lifting device；Bell is connected with the top of the furnace shell, furnace shell side is provided with control system.

With in compression smelting apparatus, the stripper plate includes clip plate, is connected with the outside of clip plate for foregoing metal casting Outer plate；Spring is fixedly connected with the outside of clip plate and outer plate, spring one end is fixedly connected with outer retainer ring；Outer fixation Ring is provided with multiple round tube holes, slidably connects slide bar on each round tube hole, and slide bar one end is fixedly connected on clip plate and outer The outside of pressing plate；Cord hole is additionally provided with outer retainer ring.

Foregoing metal casting is with rope sheave in compression smelting apparatus, is connected with the motor, rope sheave is with binding rope connection； Briquetting is connected with the hydraulic cylinder；The lifter plate bottom is fixedly connected with multiple support bars, is all connected with each support bar There is small size hydraulic cylinder；Small size hydraulic cylinder is fixedly connected in frame；Described push rod one end is connected with cylinder, and cylinder is fixedly connected on In frame；Described chute one end is arranged on outside frame.

With in compression smelting apparatus, the lifting device includes No.1 motor, No.1 motor upper end for foregoing metal casting It is connected with wiring bar；Connecting rope is connected with wiring bar, wiring bar both sides are provided with motion bar；Rope is connected with the middle part of motion bar Set, motion bar both ends are respectively connected with movable block.

Foregoing metal casting is provided with No. two motors, is rotated plate top surface with compression smelting apparatus in the swivel plate Groove provided with ring-type；The position of drop-bottom bottom respective slot is provided with bulge loop；Turn at the top of the furnace shell with bell one end It is dynamic to be connected with rotating shaft, No. three motors are connected with rotating shaft, No. three motors are fixedly connected on furnace shell.

Foregoing metal casting is provided with thermometer, connected on thermometer with compression smelting apparatus in the control system Controller is connected to, power switch is connected with controller.

Foregoing metal casting is equipped with long cunning with compression smelting apparatus on the furnace shell bottom plate and swivel plate bottom plate Groove, the heating element heater are in wavy, and the conveyer belt side is provided with collecting box.

Compared with prior art, the utility model improves the compression smelting apparatus of existing metal casting industry, passes through Motor driven in frame binds rope, binds rope and binds stripper plate, and metal fragment is to be put into be formed in the stripper plate of annular, Stripper plate bind after by the metal fragment annular compression in it into cylindric, and the hydraulic cylinder of stripper plate upper end is in stripper plate Metal fragment carries out rectilinear compression, is then declined by the lifter plate of stripper plate lower end, driven after the completion of being compressed on lifter plate Cylindrical metal chip decline also with the decline of lifter plate, then by the push rod of lifter plate side by after the completion of compression Metal fragment is shifted onto on chute, and metal fragment is transported to outside frame by chute, passes through the extruding of stripper plate and hydraulic cylinder Compression, compression speed is improved, and the finished product after the completion of compression declines by lifter plate and the release of push rod is so as to defeated It is sent to outside frame and collects, further increases the efficiency of compression；Stress when can be extruded by stripper plate to metal fragment Evenly, then the compression by hydraulic cylinder, chip is made to form the less cylindrical block in space, the melting for being more suitable for circle is used Crucible, improve the compression effectiveness of metal fragment；By being provided with heating element heater in furnace shell inwall, added by control system control Thermal element is heated to crucible, and heat-insulation layer is connected between furnace shell inwall and heating element heater, and heating element heater heats to crucible While, heat-insulation layer makes heat be not easy to distribute, and bell is connected with the top of furnace shell, covers bell in heating, makes Furnace shell is heated more stable, and is connected with drop-bottom in crucible bottom, drop-bottom bottom is connected with swivel plate, and heating element heater is to earthenware When crucible heats, metal when control system control swivel plate drive drop-bottom and crucible rotate together in crucible is by centrifugal force Effect, heated metal inside is easier the heat effect of heated element, make it is metal heated evenly；Pass through above-mentioned machine The cooperation of structure, heat energy is produced with electric power, the burning of the materials such as coal cinder is instead of, waste gas and solid waste will not be produced, will not be dirty Contaminate environment.In addition, the utility model also by motor driven bind rope stripper plate is bound when, bind rope make multiple outer plates with Clip plate inwardly extrudes, and then makes clip plate and outer plate while the metal fragment in it is extruded, and multiple outer plates Between have space between multiple clip plates, and be respectively connected with slide bar on the outside of outer plate and clip plate, slide bar can be fixed outside Slided on the round tube hole of ring, and then when encircling rope is bound to stripper plate, make the side of outer plate and clip plate along respective slide bar To slip, it is not easy to offset, improves the stability of structure；It is outer solid by being connected on the outside of outer plate and clip plate by spring To determine on ring, outer plate and clip plate are replied after the completion of extruding metal fragment by the tightening force of spring, and in outer retainer ring Cord hole is additionally provided with, binds and is connected to after restricting through cord hole in the rope sheave on motor, is easy to motor to binding the effect of tightening up restricted, and Stripper plate both sides are provided with motor, and the rotation of both sides motor drives encircling rope to tighten up, makees encircling of the encircling rope to stripper plate It is firmly more balanced；By being provided with multiple support bars in lifter plate bottom, small size hydraulic cylinder is respectively connected with each support bar, is led to The supporting role of multiple small size hydraulic cylinders is crossed, improves the weight capacity of lifter plate, weight capacity is preferable；When the metal in crucible After the completion of melting, control the No.1 motor in lifting device to rotate by control system, drive the wiring bar on No.1 motor to turn Dynamic, wiring bar winds connecting rope, and connecting rope is tensed motion bar by rope sling, makes the movable block on motion bar in long chute Upper movement, makes that crucible lifting is more steady, and structural stability is preferable, and tenses motion bar, and then lifting motion bar by connecting rope On swivel plate, function similarly to the effect of jack, mechanical flexibility is preferable and relatively labor-saving；Pass through No. two electricity in swivel plate The rotation of machine drives the rotation of drop-bottom, and is slided in the groove that the bulge loop set on drop-bottom can be set on swivel plate, improves The stability of structure；The temperature in furnace shell is experienced by the thermometer in control system, if temperature is higher, controller can be with Control power switch to disconnect, play a part of overload protection, and after the completion of the metal molten in crucible, controller controls No. three Motor rotates, and drives rotating shaft to rotate clockwise 90 degree, the bell being fixedly connected in rotating shaft is opened, then control No.1 motor Driving screw rod to rotate, crucible is lifted by supporting plate, processed so as to be suggested, automaticity is higher, improves efficiency, And by the cooperation of said mechanism, manual operation is instead of, protect the safety of worker, security is higher；And heating element heater is Waveform is set, and improves the efficiency of heating surface of heating element heater, further make in crucible it is metal heated evenly.Therefore, this reality With it is new can not only improve efficiency, improve compression effectiveness, make it is heated evenly and environmental protection, also with structural stability it is good, Bind the advantages of active force is balanced, weight capacity is preferable, mechanical flexibility is preferable, relatively labor-saving and security is higher.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of stripper plate；

Fig. 3 is the side view of outer retainer ring；

Fig. 4 is the top view of furnace shell；

Fig. 5 is the structural representation of lifting device；

Fig. 6 is the top view of lifting device；

Fig. 7 is the structural representation of swivel plate.

Mark in accompanying drawing for：1- frames, 2- stripper plates, 3- bind rope, 4- motors, 5- hydraulic cylinders, 6- lifter plates, 7- Push rod, 8- chutes, 9- clip plates, 10- outer plates, 11- springs, the outer retainer rings of 12-, 13- round tube holes, 14- slide bars, 15- ropes Hole, 16- rope sheaves, 17- briquettings, 18- support bars, 19- trumpet hydraulic cylinders, 20- cylinders, 21- conveyer belts, 22- furnace shells, 23- add Thermal element, 24- heat-insulation layers, 25- crucibles, 26- drop-bottoms, 27- swivel plates, 28- lifting devices, 29- bells, 30- controls system System, 31- No.1 motors, 32- wiring bars, 33- connecting ropes, 34- motion bars, 35- rope slings, 36- movable blocks, No. bis- motors of 37-, 38- grooves, 39- bulge loops, 40- rotating shafts, No. tri- motors of 41-, 42- thermometers, 43- controllers, 44- power switches, 45- length are slided Groove, 46- collecting boxs.

Embodiment

The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model The foundation of limitation.

Embodiment.Metal casting compression smelting apparatus, is formed as shown in Fig. 1 to 7, including frame 1, is set in frame 1 There is stripper plate 2；The outer ring of stripper plate 2 is wound with encircling rope 3, binds 3 both sides of rope and is respectively connected with motor 4；The upper end of stripper plate 2 is set There is hydraulic cylinder 5, the lower end of stripper plate 2 is connected with lifter plate 6；The side of lifter plate 6 is provided with push rod 7, and opposite side is provided with chute 8, The side of chute 8 is provided with conveyer belt 21；The side of frame 1 is provided with furnace shell 22, and the inwall of furnace shell 22 is provided with heating element heater 23, Heat-insulation layer 24 is connected between the inwall of furnace shell 22 and heating element heater 23；Crucible 25, the bottom of crucible 25 are provided with the furnace shell 22 It is connected with drop-bottom 26；The bottom of drop-bottom 26 is connected with swivel plate 27, and the bottom of swivel plate 27 is connected with lifting device 28；The stove The top of shell 22 is connected with bell 29, and the side of furnace shell 22 is provided with control system 30.

The stripper plate 2 includes clip plate 9, and the outside of clip plate 9 is connected with outer plate 10；Clip plate 9 and outer plate 10 Outside has been fixedly connected with spring 11, and the one end of spring 11 is fixedly connected with outer retainer ring 12；Outer retainer ring 12 is provided with multiple circles Through hole 13, slide bar 14 is slidably connected on each round tube hole 13, the one end of slide bar 14 is fixedly connected on clip plate 9 and outer plate 10 outside；Cord hole 15 is additionally provided with outer retainer ring 12；Rope sheave 16 is connected with the motor 4, rope sheave 16 connects with binding rope 3 Connect；Briquetting 17 is connected with the hydraulic cylinder 5；The bottom of lifter plate 6 is fixedly connected with multiple support bars 18, each support bar Small size hydraulic cylinder 19 is respectively connected with 18；Small size hydraulic cylinder 19 is fixedly connected in frame 1；Described one end of push rod 7 is connected with gas Cylinder 20, cylinder 20 are fixedly connected in frame 1；Described one end of chute 8 is arranged on outside frame 1；The lifting device 28 includes one Number motor 31, the upper end of No.1 motor 31 is connected with wiring bar 32；Connecting rope 33, the both sides of wiring bar 32 are connected with wiring bar 32 It is provided with motion bar 34；The middle part of motion bar 34 is connected with rope sling 35, and the both ends of motion bar 34 are respectively connected with movable block 36；The rotation No. two motors 37 are provided with flap 27, the top surface of swivel plate 27 is provided with the groove 38 of ring-type；The bottom of drop-bottom 26 corresponds to recessed The position of groove 38 is provided with bulge loop 39；The top of furnace shell 22 is rotatably connected to rotating shaft 40 with the one end of bell 29, is connected in rotating shaft 40 There are No. three motors 41, No. three motors 41 are fixedly connected on furnace shell 22；Thermometer 42, temperature are provided with the control system 30 Controller 43 is connected with meter 42, power switch 44 is connected with controller 43；The bottom plate of furnace shell 22 and swivel plate 27 bottom plate On be equipped with long chute 45, for the heating element heater 23 in wavy, the side of conveyer belt 21 is provided with collecting box 46.

Operation principle：During work, the metal fragment being collected is put into the stripper plate 2 in frame 1, starts stripper plate 2 The motor 4 of both sides is rotated counterclockwise, and the rope sheave 16 on drive motor 4 also rotates counterclockwise, and the encircling rope 3 of both sides is tightened up In rope sheave 16, the stripper plate 2 for passing through the cord hole 15 set in outer retainer ring 12 to make to set within it after rope 3 is tightened is bound in Between tighten up, and stripper plate 2 includes clip plate 9 and outer plate 10, and bind rope 3 contacts with outer plate 10, bind restrict 3 tighten up make it is multiple Outer plate 10 is mobile to centre, and the outside of clip plate 9 and outer plate 10 is provided with outer retainer ring 12, and outer retainer ring 12 is fixed It is connected in frame 1, outer retainer ring 12 is provided with round tube hole 13, and the one end of slide bar 14 is fixedly connected on the outside of outer plate 10 On, and slide bar 14 can slide on round tube hole 13, and outer plate 10 is also fixedly connected by spring 11 with outer retainer ring 12, Binding when rope 3 is tightened up makes multiple outer plates 10 overcome direction of the tensile force of spring 11 along slide bar 14 to move inward；When multiple Outer plate 10 extrudes multiple clip plates 9 when moving inward, slide bar 14, and slide bar 14 are also installed with the outside of clip plate 9 It can be slided on round tube hole 13, clip plate 9 is also fixedly connected by spring 11 with outer retainer ring 12, makes clip plate 9 individual outer Overcome direction of the tensile force of spring 11 along slide bar 14 to move inward under the extruding of pressing plate 10, pass through clip plate 9 and outer plate Under 10 common extruding, the metal fragment for making to be put into stripper plate 2 is compressed into column, until between multiple clip plates 9 and more Two end in contact between individual outer plate 10, make clip plate 9 and sectional area in outer plate 10 and briquetting 17 identical；Now motor 4 Stop operating, and hydraulic cylinder 5 is started working, hydraulic cylinder 5 pushes down on, and drives briquetting 17 to press to the gold in stripper plate 2 downward vertically Belong to chip, metal fragment is further compressed.

After the completion of compression, two motors 4 of the both sides of stripper plate 2 rotate clockwise, and drive rope sheave 16 also to rotate counterclockwise, Rope sheave 16 discharges the encircling rope 3 tightened up, drawing of the multiple clip plates 9 and outer plate 10 being connected in encircling rope 3 in spring 11 Moved laterally under clamp force effect, be displaced outwardly, i.e., can make more along the round tube hole 13 in outer retainer ring 12 with moving slide-bar 14 Individual clip plate 9 and outer plate 10 separate with the reguline metal thing after being compressed in it, and subsequent multiple small size hydraulic cylinders 19 start, The small size retracted downward of hydraulic cylinder 19, drives multiple support bars 18 to move down, and then drives the lifting being fixed on support bar 18 Plate 6 declines, and the reguline metal chip compressed is moved down, and now the air inlet of cylinder 20 in the left side of lifter plate 6, drives cylinder 20 On piston move right, and then drive push rod 7 to promote reguline metal chip on lifter plate 6 to the right, make reguline metal chip Shifted onto from lifter plate 6 in chute 8, and one end of chute 8 is arranged on outside frame 1, reguline metal chip is conveyed by chute 8 Onto the conveyer belt 21 outside frame 1, conveyer belt 21 is rotated clockwise, and the reguline metal chip after the completion of compression is transported into collection It is collected in case 46.

After multiple reguline metal chips, which are collected case 46, to be collected, the reguline metal chip in collecting box 46 is poured into In crucible 25, now the bell 29 on furnace shell 22 is in opening, and the crucible 25 for having filled reguline metal chip is put into furnace shell In 22, the controller 43 in control system 30 controls power switch 44 to open, and rotates No. three motors 41, drives rotating shaft 40 inverse Hour hands rotate 90 degree, and the bell 29 for making to be fixedly connected in rotating shaft 40 covers crucible 25, and controller 43 controls heating element heater again 23 start, and heating element heater 23 heats to the metal object in crucible 25 and crucible 25, and in heating process, in furnace shell 22 Heat-insulation layer 24 between wall and heating element heater 23 can make heat caused by heating element heater 23 be not easy to distribute, and play insulation and make With；In the heating process of heating element heater 23, controller 43 controls No. two motors 37 in swivel plate 27 to rotate clockwise, and drives stove Bottom plate 26 rotates clockwise, while drives the crucible 25 being placed on drop-bottom 26 also to rotate clockwise therewith, and in crucible 25 Metal object in fusion process by centrifugal action, make inside metal object it is heated evenly, the heating effect of heating element heater 23 More preferably, and on drop-bottom 26 rotational slide of groove 38 that the bulge loop 39 set can be set on swivel plate 27, drop-bottom 26 is improved With the rotational stabilization of crucible 25.

When the temperature in furnace shell 22 in heating process if temperature is too high, the thermometer 42 in control system 30 senses To the temperature signal in furnace shell 22, signal is passed into controller 43, controller can control power switch 44 to disconnect, and make to add Thermal element 23 stops heating；After the temperature in furnace shell 22 drops to critical temperature, controller control power switch 44 starts, and makes to add Thermal element 23 continues to heat crucible 25.

After the completion of the metal object in crucible 25 is heated the heating fusing of element 23, the controller 43 in control system 30 Signal is sensed, control power switch 44 disconnects, while controls No. three motors 41 to rotate clockwise, and drives rotating shaft 40 to turn clockwise Dynamic, the bell 29 for making to be fixedly connected in rotating shaft 40 is opened, and now controller 43 controls the No.1 motor in lifting device 28 31 rotate clockwise, and drive the wiring bar 32 that is connected on No.1 motor 31 to rotate clockwise, and wiring bar 32 is by connecting rope 3312 Wound clockwise in wiring bar 32, draw the motion bar 34 of the both sides of No.1 motor 31 to centre after passing through rope sling 35 by connecting rope 33 Tightly, it is rotatablely connected between two adjacent motion bars 34, the upper and lower ends of motion bar 34 are rotatably connected to movable block 36, even Splicing 33 makes the movable block 36 of the lower end of motion bar 34 move inward on long chute 45 after tensing, and the shifting of the upper end of motion bar 34 Motion block 36 also drives swivel plate 27 to move up while moving inward on the long chute 45 on the bottom plate of swivel plate 27, and then The drop-bottom 26 on swivel plate 27 and crucible 25 is driven to move up, crucible 25 can be taken out after being lifted, for lower one In process, work is completed.

Claims (7)

1. metal casting compression smelting apparatus, it is characterised in that：Including frame (1), stripper plate (2) is provided with frame (1)； Stripper plate (2) outer ring is wound with encircling rope (3), binds rope (3) both sides and is respectively connected with motor (4)；Stripper plate (2) upper end is set There is hydraulic cylinder (5), stripper plate (2) lower end is connected with lifter plate (6)；Lifter plate (6) side is provided with push rod (7), and opposite side is set Chute (8) is equipped with, chute (8) side is provided with conveyer belt (21)；Frame (1) side is provided with furnace shell (22), furnace shell (22) inwall is provided with heating element heater (23), and heat-insulation layer (24) is connected between furnace shell (22) inwall and heating element heater (23)；Institute State in furnace shell (22) and be provided with crucible (25), crucible (25) bottom is connected with drop-bottom (26)；Drop-bottom (26) bottom is connected with Swivel plate (27), swivel plate (27) bottom are connected with lifting device (28)；Bell (29), stove are connected with the top of the furnace shell (22) Shell (22) side is provided with control system (30).

2. metal casting according to claim 1 compression smelting apparatus, it is characterised in that：The stripper plate (2) includes Clip plate (9), clip plate (9) outside are connected with outer plate (10)；It is fixedly connected with the outside of clip plate (9) and outer plate (10) There is spring (11), spring (11) one end is fixedly connected with outer retainer ring (12)；Outer retainer ring (12) is provided with multiple round tube holes (13) slide bar (14), is slidably connected on each round tube hole (13), slide bar (14) one end is fixedly connected on clip plate (9) and outer The outside of pressing plate (10)；Cord hole (15) is additionally provided with outer retainer ring (12).

3. metal casting according to claim 1 compression smelting apparatus, it is characterised in that：Connected on the motor (4) There is rope sheave (16), rope sheave (16) is connected with binding rope (3)；Briquetting (17) is connected with the hydraulic cylinder (5)；The lifter plate (6) bottom is fixedly connected with multiple support bars (18), and small size hydraulic cylinder (19) is respectively connected with each support bar (18)；Small size liquid Cylinder pressure (19) is fixedly connected in frame (1)；Described push rod (7) one end is connected with cylinder (20), and cylinder (20) is fixedly connected on In frame (1)；Described chute (8) one end is arranged on frame (1) outside.

4. metal casting according to claim 1 compression smelting apparatus, it is characterised in that：Lifting device (28) bag No.1 motor (31) is included, No.1 motor (31) upper end is connected with wiring bar (32)；Connecting rope (33) is connected with wiring bar (32), Wiring bar (32) both sides are provided with motion bar (34)；Rope sling (35), motion bar (34) both ends are connected with the middle part of motion bar (34) It is respectively connected with movable block (36).

5. metal casting according to claim 1 compression smelting apparatus, it is characterised in that：Set in the swivel plate (27) No. two motors (37) are equipped with, swivel plate (27) top surface is provided with the groove (38) of ring-type；Drop-bottom (26) bottom respective slot (38) position is provided with bulge loop (39)；At the top of the furnace shell (22) rotating shaft (40), rotating shaft are rotatably connected to bell (29) one end (40) No. three motors (41) are connected with, No. three motors (41) are fixedly connected on furnace shell (22).

6. metal casting according to claim 1 compression smelting apparatus, it is characterised in that：In the control system (30) Thermometer (42) is provided with, controller (43) is connected with thermometer (42), power switch (44) is connected with controller (43).

7. the metal casting compression smelting apparatus according to any claim in claim 1 to 6, it is characterised in that： Be equipped with long chute (45) on furnace shell (22) bottom plate and swivel plate (27) bottom plate, the heating element heater (23) in wavy, Conveyer belt (21) side is provided with collecting box (46).