CN117066451B - Heating plate and production device and production process thereof - Google Patents
Heating plate and production device and production process thereof Download PDFInfo
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- CN117066451B CN117066451B CN202311046041.XA CN202311046041A CN117066451B CN 117066451 B CN117066451 B CN 117066451B CN 202311046041 A CN202311046041 A CN 202311046041A CN 117066451 B CN117066451 B CN 117066451B
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- heating wire
- pipe
- die
- feeding
- electric heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 94
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005485 electric heating Methods 0.000 claims abstract description 46
- 238000005266 casting Methods 0.000 claims abstract description 33
- 239000006260 foam Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 3
- 229920006327 polystyrene foam Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- -1 iron-chromium-aluminum Chemical compound 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/04—Waterproof or air-tight seals for heaters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a heating plate, a production device and a production process thereof, and belongs to the technical field of heating plate production. The heating plate comprises a shell and an electric heating wire, wherein the shell is wrapped outside the electric heating wire, and an electric connection column of the electric heating wire is arranged outside the shell. The shell comprises a disc-shaped chassis and a wrapping ring above the chassis, and the electric heating wire is arranged inside the wrapping ring. The electric heating wire and the chassis are integrally formed in a casting mode, and the electric heating wire is directly wrapped in the chassis, so that the contact effect between the electric heating wire and the chassis is improved, the electric heating wire is prevented from being contacted with air, and the use effect of the electric heating wire is ensured.
Description
Technical Field
The invention belongs to the technical field of heating plate production, and particularly relates to a heating plate, a production device and a production process thereof.
Background
The heating plate is an important component in the electric heating cooker and is generally composed of an electric heating wire and a chassis, wherein the electric heating wire is generally made of iron-chromium-aluminum electric heating alloy or nickel-chromium electric heating alloy, and in order to improve heat conduction efficiency and reduce weight, the chassis is generally made of aluminum alloy, so that the materials of the chassis and the electric heating wire are inconsistent, and the chassis and the electric heating wire cannot be fixedly connected in a welding mode.
At present, the chassis and the electric heating wire are fixedly connected in a mode of metal clamping pieces and bolt connection. The disadvantage of this connection is that a gap is left between the heating wire and the chassis, which is increased after one end of use, reducing the heat conduction between the heating wire and the chassis. Meanwhile, the heating wire is in contact with air, is easy to oxidize after long-time use, and if the heating wire is used in places with high air humidity in the south, alkali scales are formed on the surface of the heating wire, so that the heating efficiency is further reduced.
Disclosure of Invention
The invention aims to solve the technical problems that: the heating plate and the chassis are integrally formed in a casting mode, and the heating wire is directly wrapped in the chassis, so that the contact effect between the heating wire and the chassis is improved, the heating wire is prevented from being contacted with air, and the use effect of the heating wire is ensured.
The invention solves the problems existing in the prior art by adopting the technical scheme that:
a heating plate production device comprises a lost foam and a die.
The lost foam comprises a plurality of layers of arc grooves which are arranged at the upper ends in an open mode and connecting plates which are fixedly connected with all the arc grooves, and the electric heating wires are clamped inside the arc grooves.
The die comprises a lower die and an upper die which are stacked.
The bottom cavity is concavely arranged on the top surface of the lower die, and the lost foam is arranged in the bottom cavity.
The bottom surface of the upper die is concavely provided with an electric heating wire groove, the electric heating wire is arranged in the electric heating wire groove, the inner diameter of the top end of the electric heating wire groove is larger than the outer diameter of the electric heating wire, one side of the top of the upper die is provided with a feeding hole, and the other side of the top of the upper die is provided with an exhaust hole.
Preferably, the top surface of the lower die is concavely provided with a sealing groove around the outside of the bottom cavity, the bottom surface of the upper die is convexly provided with a sealing ring, and the sealing ring is inserted in the sealing groove.
Preferably, the top surface of the lower die is convexly provided with a plurality of guide rods which are vertically arranged, the upper die is provided with a plurality of guide holes, and the guide rods are connected with the guide holes in a matching way.
Preferably, the upper die is provided with a plurality of feeding holes, the feeding holes are respectively in through connection with the electric heating wire grooves and the bottom cavity, the outer side of the top of the upper die is provided with branch pipes in through connection with the feeding holes, all the branch pipes are in through connection with a main pipe, and the main pipe is provided with a main inlet.
A production process of a heating plate comprises the following steps:
A. manufacturing a lost foam;
B. After the lost foam and the electric heating wire are assembled, the lost foam is put into a mold;
C. Injecting a metal solution into the mold, and casting a heating plate;
D. after cooling, opening the mold, and taking out the heating disc blank;
E. and (5) machining the heating disc blank to obtain a finished product.
Preferably, the lost foam is made of polystyrene foam, and the size of the opening at the upper end of the arc-shaped groove of the lost foam is larger than or equal to the angle.
Preferably, the lost foam comprises at least three layers of arc-shaped grooves, a circle of heating wires are clamped in each layer of arc-shaped groove, and the electric connection posts of the heating wires are vertically upwards arranged.
A heating plate comprises a shell and an electric heating wire, wherein the shell is wrapped outside the electric heating wire, and an electric connection column of the electric heating wire is arranged outside the shell.
Preferably, the shell comprises a disc-shaped chassis and a wrapping ring above the chassis, and the heating wire is arranged inside the wrapping ring.
Preferably, the material of the shell is aluminum alloy.
Compared with the prior art, the invention has the beneficial effects that:
(1) The heating wire is wrapped in the shell, so that the heating wire is prevented from being contacted with air, oxidation phenomenon is avoided, and the service life of the heating wire is prolonged.
(2) The shell and the heating wire are integrally formed in a casting mode, so that the shell and the heating wire are connected more firmly.
Drawings
The invention will be further described with reference to the drawings and examples.
Figure 1 is a diagram of a heating plate structure according to the present invention,
Figure 2 is a layout of the heating wires inside the heating plate of the present invention,
Figure 3 is a view showing the installation effect between the heating wire and the lost foam of the present invention,
Figure 4 is an exploded view of figure 3,
Figure 5 is a diagram of the external shape of the mold in the production process of the heating plate of the invention,
Figure 6 is a cross-sectional view of figure 5,
Figure 7 is a top view of the upper mold bottom in the mold,
Figure 8 is an exploded view of figure 5,
FIG. 9 is a structural view of a heating plate production device of the present invention,
Figure 10 is an enlarged view of a portion of figure 9 at a,
Figure 11 is a block diagram of the support platform of figure 9,
Figure 12 is a cross-sectional view of figure 11,
Figure 13 is a block diagram of the injection device,
Figure 14 is a cross-sectional view of the feed control device in a fed state,
Figure 15 is an enlarged view of a portion of figure 14 at B,
Figure 16 is a cross-sectional view of the feed control device in a sealed condition,
Figure 17 is a cross-sectional view of a control sleeve in the feed control device,
Fig. 18 is a cross-sectional view of an upper press-molding tightening rod.
In the figure: 1-housing, 101-chassis, 102-wrap ring, 2-heating wire, 201-power receiving column, 3-arc slot, 301-connecting plate, 4-guide bar, 5-lower die, 501-bottom cavity, 502-sealing slot, 6-upper die, 601-heating wire slot, 602-sealing ring, 603-feed hole, 604-exhaust hole, 605-guide hole, 606-cam, 607-branch pipe, 608-manifold, 609-total inlet, 7-exhaust pipe, 8-turntable, 801-die mounting slot, 802-toothed ring, 9-support table, 10-motor, 11-gear, 12-feed back pipe, 1201-connecting pipe, 1202-arc plate, 13-feed device, 1301-discharge port, 13011-clamping slot, 1302-lower end pipe, 1303-middle pipe, 1304-upper end pipe, 1305-bump, 1306-top control rod, 1307-through hole, 1308-limiting plate, 14-control sleeve, 1401-connecting port, 1402-spiral slot, 15-compression rod, 16-connecting plate, 17-expansion device, 18-total, 19-expansion device.
Detailed Description
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The following describes a heating plate, a production device and a production process thereof in detail with reference to the accompanying drawings, but is not intended to limit the invention.
A heating plate comprises a shell 1 and an electric heating wire 2, wherein the electric heating wire 2 adopts the prior art. The shell 1 is wrapped outside the heating wire 2, and the electric connection column 201 of the heating wire 2 is arranged outside the shell 1.
Thus, the electric heating wire 2 except the electric connection column 201 is wrapped by the shell 1, thereby isolating the electric heating wire 2 from contacting with air and avoiding oxidation. The shell 1 and the heating wire 2 are molded in a casting mode, so that the shell 1 is in close and firm contact with the heating wire 2, and the shell is used for a long time, a gap is not generated between the shell and the heating wire, and the heat conduction efficiency of the shell 1 is optimized.
The shell 1 comprises a disc-shaped chassis 101 and a wrapping ring 102 above the chassis, the heating wire 2 is arranged inside the wrapping ring 102, and the chassis 101 is connected with the pot body, so that the chassis 101 can be made of the same metal as the pot body 1, and the two can be fixedly connected in a welding mode.
However, in order to improve the heat conducting effect of the chassis 101 and reduce the weight, in this embodiment, the material of the housing 1 is aluminum alloy, and may be fixedly connected with the pan body by way of heat conducting glue.
Because the shell 1 wraps the heating wire 2, the heating wire 2 needs to be lifted up to leave a gap at the bottom thereof in the casting process so as to be convenient for forming the chassis 101, so in this embodiment, the heating wire 2 is matched by the lost foam, and a heating plate production device described below is adopted to cast together to form the heating plate.
A heating plate production device comprises a lost foam and a die.
The lost foam comprises a plurality of layers of arc grooves 3 with open upper ends and connecting plates 301 for fixedly connecting all the arc grooves 3, and the electric heating wires 2 are clamped inside the arc grooves 3.
The die comprises a lower die 5 and an upper die 6 which are stacked, wherein a casting cavity is formed between the lower die 5 and the upper die 6 after the lower die 5 and the upper die 6 are stacked and combined, and the lost foam and the heating wire 2 are placed into the casting cavity together for casting.
The casting cavity is spliced by end chamber 501 and heating wire groove 601 and is constituteed, and connecting plate 301 bottom and end chamber 501 contact, and end chamber 501 forms chassis 101, and heating wire 2 sets up inside heating wire groove 601, and heating wire groove 601 top internal diameter is greater than heating wire 2 external diameter, and heating wire groove 601 forms parcel circle 102.
The bottom cavity 501 is concavely arranged on the top surface of the lower die 5, and the electric heating wire groove 601 is concavely arranged on the bottom surface of the upper die 6.
A feed hole 603 is formed in one side of the top of the upper die 6, an exhaust hole 604 is formed in the other side of the top of the upper die 6, molten metal flows into the casting cavity through the feed hole 603, and the lost foam is gasified and air in the casting cavity is exhausted through the exhaust hole 604. Meanwhile, a vertically arranged placing hole is concavely arranged on the bottom surface of the upper die 6, and the power connection column 201 is arranged inside the placing hole.
In order to improve the sealing effect when the upper die 6 is connected with the lower die 5, the top surface of the lower die 5 is concavely provided with a sealing groove 502 around the outside of the bottom cavity 501, the bottom surface of the upper die 6 is convexly provided with a sealing ring 602, and the sealing ring 602 is inserted into the sealing groove 502. Multiple rings of sealing rings 602 and sealing grooves 502 can be arranged, and a labyrinth seal form is formed at the periphery of the casting cavity, so that the sealing effect is optimized.
The top surface of the lower die 5 is convexly provided with a plurality of guide rods 4 which are vertically arranged, and the upper die 6 is provided with a plurality of guide holes 605. The guide rod 4 passes through the guide hole 605 and is connected with the guide hole 605 in a matched manner, plays a role in guiding and positioning the installation of the upper die 6 and the lower die 5, ensures that the sealing ring 602 is inserted into the sealing groove 502, and simultaneously ensures the accuracy of molding after the splicing of the casting cavities. In this embodiment, 3 guide rods 4 are provided distributed in an annular array about the casting cavity axis.
The upper die 6 is provided with a plurality of feeding holes 603, the feeding holes 603 are respectively communicated with the electric heating wire tank 601 and the bottom cavity 501, the outer side of the top of the upper die 6 is provided with branch pipes 607 communicated with the feeding holes 603, all the branch pipes 607 are communicated with a main pipe 608, and the main pipe 608 is provided with a main inlet 609.
The metal solution is injected through the main inlet 609 and flows into the casting cavity through each branch pipe 607 to be cast, the metal solution is gasified under the action of high temperature after contacting with the lost foam, and the gas is discharged through the exhaust hole 604 to finally finish casting and form the heating plate after cooling.
In order to improve the production efficiency, in this embodiment, a plurality of molds are arranged on the turntable 8 in a ring-shaped array, the turntable 8 can rotate to bring the molds to several steps of casting, cooling and mold opening, and several steps can be performed simultaneously, so that the production efficiency is improved.
In order to improve the utilization efficiency of the plane of the turntable 8, that is, the turntable with the same area is provided with a plurality of dies, in this embodiment, the lower die 5 and the upper die 6 are hexagonal, a hexagonal die mounting groove 801 is recessed in the top surface of the turntable 8, and the lower die 5 is embedded in the die mounting groove 801.
Since the vent 604 is always vented during casting, and at the end of casting, the vent 604 may even be spraying a certain amount of molten metal. Because the part of gas is the product of the lost foam gasification, the part of gas is directly discharged into the air, has a certain influence on the quality of the air and has hidden trouble on the health of operators. In order to collect the gas and the molten metal, the outlet of the vent hole 604 is provided in the side wall of the upper die 6, and the vent pipe 7 is connected to the end of the vent hole 604.
A through hole is arranged in the center of the rotary table 8, a vertically arranged feed back pipe 12 is rotatably connected in the through hole, the upper end of the feed back pipe 12 is arranged in a closed mode, the outlet of the lower end of the feed back pipe is connected with a recovery device, and the recovery device is connected with a recovery tank, an exhaust gas treatment device or other existing recovery mechanisms by adopting the prior art.
A plurality of connecting pipes 1201 are connected on the circumferential surface of the feed back pipe 12 in a penetrating way, the connecting pipes 1201 are in one-to-one correspondence with the exhaust pipes 7, an arc plate 1202 is fixed below the connecting pipes 1201, the front ends of the arc plates 1202 extend out, and the exhaust pipes 7 are placed on the arc plates 1202.
Under the condition that the total amount of the molten metal injected into each set of die is controlled, the possibility of exhausting the molten metal by the exhaust pipe 7 is very low, and more gas is exhausted, so that the outer part of the tail end of the exhaust pipe 7 can surround the rubber sleeve, the tail end of the feed back pipe 12 also surrounds the rubber sleeve, and when the two sleeves are connected, the two sleeves can be mutually abutted, and the sealing effect is improved.
A supporting table 9 is supported below the turntable 8, the turntable 8 is rotationally connected with the supporting table 9, a gear ring 802 is fixed at the bottom of the turntable 8, the gear ring 802 is connected with a gear 11 in a meshed manner, and a motor 10 drives the gear 11 to rotate.
In order to realize automatic feeding, the invention is additionally provided with a feeding control device on the basis of the embodiment. The feeding control device comprises a feeding device 13, a control sleeve 14 and a telescopic device 17, wherein the telescopic device 17 adopts the prior art, and an electric telescopic rod or a hydraulic telescopic rod can be adopted.
The feeding device 13 comprises a lower end pipe 1302, an intermediate pipe 1303 and an upper end pipe 1304 which are sequentially connected from bottom to top, the inner diameter of the lower end pipe 1302 is smaller than that of the upper end pipe 1304, and the intermediate pipe 1303 plays a role of reducing.
A discharge hole 1301 is arranged at the bottom of the lower end pipe 1302, and continuous disconnection between the discharge hole 1301 and the main inlet 609 is realized through lifting.
The outer wall of the upper tube 1304 is provided with a through hole 1307, and a top control rod 1306 is fixed at the top of the upper tube 1304, and the control rod 1306 is connected with the telescopic part of the telescopic device 17.
A connecting port 1401 is arranged on the outer wall of the tube body of the control sleeve 14, the connecting port 1401 is in through connection with the inner cavity of the control sleeve 14, a main feeding tube 18 is in through connection with the outer part of the connecting port 1401, and a raw material supply device of the main feeding tube 18 is connected. The control sleeve 14 and the middle of the telescopic device 17 are fixedly connected through the mounting frame 19, and the mounting frame 19 is fixedly connected with the supporting table 9 or other positions of a factory, so that the fixed part of the telescopic device 17 and the control sleeve 14 are fixed.
The intermediate tube 1303 and the upper tube 1304 are slidably disposed within the control sleeve 14, and the outer diameter of the upper tube 1304 is the same as the inner diameter of the control sleeve 14. When the upper tube 1304 is moved up to the uppermost end, the through holes 1307 are staggered with the connection ports 1401, and when the upper tube 1304 is moved down to the lowermost end, the through holes 1307 are coaxially arranged with the connection ports 1401, and the two are connected through.
A limiting plate 1308 is provided at the bottom of the intermediate tube 1303, and when the upper tube 1304 is moved to the uppermost end, the limiting plate 1308 abuts against the bottom surface of the control sleeve 14. A sensor or limit switch may be added to the control board 1308 in conjunction with the telescoping device 17.
In order to increase the connection effect between the outlet 1301 and the general inlet 609, the following two methods may be adopted:
First kind: the annular clamping groove 13011 is concavely arranged on the bottom surface of the discharge hole 1301, after the discharge hole 1301 moves downwards, the main inlet 609 is just inserted into the clamping groove 13011, so that the main inlet 609 is wrapped by the discharge hole 1301, and the sealing effect after two kinds of connection is improved.
Second kind: the inner diameter of the discharge hole 1301 is the same as the outer diameter of the main inlet 609, or the outer diameter of the discharge hole 1301 is the same as the inner diameter of the main inlet 609, and the two are in threaded connection.
A spiral wire groove 1402 is provided on the inner wall of the control sleeve 14, a protruding point 1305 is provided on the outer wall of the upper tube 1304, and the protruding point 1305 is slidably provided inside the spiral wire groove 1402. In this way, in the process of downward movement of the feeding device 13, due to the guiding effect of the spiral groove 1402, the feeding device 13 rotates while descending, that is, the discharging hole 1301 descends in a rotating manner, so that the feeding device 13 can be in threaded connection with the main inlet 609, and the tightness of connection between the feeding device and the main inlet 609 is improved.
Because there is certain pressure to the molten metal of mould inside injection, in order to avoid the molten metal of injection time, upper mould 6 and lower mould 5 separation are equipped with protruding pole 606 perpendicularly at upper mould 6 top, are equipped with compressing rod 15 above protruding pole 606, compressing rod 15 and top control rod 1306 all are connected with the telescopic part of telescoping device 17 through connecting plate 16.
When feeding is needed, the telescopic part moves downwards, the pressing rod 15 is abutted with the protruding rod 606, the protruding rod 606 is pressed downwards, and the upper die 6 is prevented from bouncing up when molten metal is injected.
Based on the heating plate and the heating plate production device, the invention provides the following heating plate production process, which comprises the following steps:
A. and manufacturing a lost foam, wherein the lost foam adopts polystyrene foam. The shape design of the lost foam is matched with the shape and arrangement mode of the heating wire 2.
For example, an annular heating wire 2 is adopted, and a plurality of annular heating wires 2 sleeved together are contained in one heating disc, so that the lost foam comprises a plurality of layers of arc-shaped grooves 3, a circle of heating wires 2 is clamped in each layer of arc-shaped grooves 3, and a power connection column 201 of the heating wires 2 is vertically upwards arranged. In this embodiment, three heating wires 2 are used, and the number of layers of the arc-shaped grooves 3 is three. The upper end opening size of the arc-shaped groove 3 of the lost foam is more than or equal to 180 degrees, and the electric heating wire 2 is clamped with the arc-shaped groove 3 through the opening of the arc-shaped groove 3.
The heating wire 2 is not limited to the above arrangement, but a single serpentine coiled heating wire, or a spiral heating wire, and the effect of the lost foam is only to support the heating wire 2 at the time, so that the casting space of the chassis 101 and the wrapping ring 102 is reserved.
B. the upper mold 6 is moved up, the lost foam is assembled with the heating wire 2 and then put into the bottom cavity 501 of the lower mold 5, and then the upper mold 6 is closed along the guide rod 4.
C. Six sets of moulds distributed in an annular array around the axis of the mould are arranged on the rotary table 8, the motor 10 is started, the motor 10 adopts a stepping motor, and the opening rotation angle of each time is 60 degrees. The turret 8 is rotated, rotating the mould in step B to below the feed control device. After that, the motor 10 stops rotating, the telescopic part of the telescopic device 17 moves downwards, the compression rod 15 pushes against the column convex rod 606 or the upper die 6, the discharge hole 1301 is communicated with the main inlet 609, the through hole 1307 is communicated with the connecting port 1401, and the main feeding pipe 18 injects molten metal into the casting cavity of the die. The lost foam is gasified after contacting with the molten metal, and the gas flows into the feed back pipe 12 through the exhaust pipe 7 to be collected.
After the quantitative molten metal is injected into the casting cavity, the casting of the heating plate is completed.
The mold at the position B is repeatedly subjected to the step B while the mold at the position B is filled with the molten metal, and the lost foam and the heating wire 2 are added to the interior of the casting cavity.
After the molten metal casting is completed, the telescopic part of the telescopic device 7 moves upwards, so that the feeding control device is separated from the die. After separation, the motor 10 is rotated again by 60 °, and the mold filled with molten metal is transferred to the next station for cooling. And C, moving the die filled with the lost foam and the heating wire 2 at the last station to the lower part of the feeding control device, and repeating the step C.
D. As shown in fig. 9, the mold filled with the molten metal is cooled at two subsequent stations, and cooling, solidification and shaping are completed at a third subsequent station. And solidifying and qualifying after the die rotates 180 degrees. A feed control device is also arranged right above the station, and the total feed pipe 18 of the feed control device is connected with the high-pressure air in a penetrating way. The feed control device is 180 degrees apart from the feed control device for molten metal.
The feeding device 13 and the pressing rod 15 of the station move downwards, clean high-pressure air is injected into the casting cavity after the station is in place, and the cooled and molded heating plate is separated from the die.
After the injection of the high-pressure air, the feeding device 13 and the pressing rod 15 are moved up, the motor 10 rotates by 60 degrees, and the mold rotates to the downward moving station.
After the mold rotates to the next station, an operator opens the upper mold, takes out the heating plate, and then repeats the step B to add a new lost mold and the heating wire 2 into the casting cavity.
E. and (5) machining the heating disc blank to obtain a finished product.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (6)
1. A dish apparatus for producing generates heat which characterized in that:
Comprises a lost foam and a mould,
The lost foam comprises a plurality of layers of arc grooves (3) with open upper ends and connecting plates (301) for fixedly connecting all the arc grooves (3), the electric heating wires (2) are clamped in the arc grooves (3),
The die comprises a lower die (5) and an upper die (6) which are arranged in a stacked manner,
A bottom cavity (501) is concavely arranged on the top surface of the lower die (5), the lost foam is arranged in the bottom cavity (501),
The bottom surface of the upper die (6) is concavely provided with an electric heating wire groove (601), the electric heating wire (2) is arranged in the electric heating wire groove (601), the inner diameter of the top end of the electric heating wire groove (601) is larger than the outer diameter of the electric heating wire (2), one side of the top of the upper die (6) is provided with a feeding hole (603), the other side of the top of the upper die (6) is provided with an exhaust hole (604),
A plurality of feeding holes (603) are arranged on the upper die (6), the feeding holes (603) are respectively connected with the electric heating wire groove (601) and the bottom cavity (501) in a penetrating way,
The outer side of the top of the upper die (6) is provided with a branch pipe (607) which is communicated with a feed hole (603), all branch pipes (607) are communicated with a main pipe (608), the main pipe (608) is provided with a main inlet (609),
The shape of the lower die (5) and the upper die (6) is hexagonal, the outlet of the exhaust hole (604) is arranged on the side wall of the upper die (6), the tail end of the exhaust hole (604) is connected with an exhaust pipe (7) in a penetrating way,
A plurality of dies are arranged on the rotary table (8) in an annular array, a hexagonal die mounting groove (801) is concaved in the top surface of the rotary table (8), the lower die (5) is inlaid in the die mounting groove (801),
A through hole is arranged at the center of the rotary table (8), a vertically arranged feed back pipe (12) is rotationally connected in the through hole, the upper end of the feed back pipe (12) is arranged in a closed way, the outlet at the lower end of the feed back pipe (12) is connected with a recovery device,
A plurality of connecting pipes (1201) are connected on the circumferential surface of the feed back pipe (12), the connecting pipes (1201) are in one-to-one correspondence with the exhaust pipes (7),
A supporting table (9) is supported below the turntable (8), the turntable (8) is rotationally connected with the supporting table (9), a gear ring (802) is fixed at the bottom of the turntable (8), a gear (11) is connected with the gear ring (802) in a meshed manner, a motor (10) drives the gear (11) to rotate,
In order to realize automatic feeding, a feeding control device is additionally arranged, the feeding control device comprises a feeding device (13), a control sleeve (14) and a telescopic device (17),
The feeding device (13) comprises a lower end pipe (1302), a middle pipe (1303) and an upper end pipe (1304) which are sequentially connected from bottom to top, the inner diameter of the lower end pipe (1302) is smaller than that of the upper end pipe (1304),
A discharge hole (1301) is arranged at the bottom of the lower end pipe (1302), the continuous disconnection of the discharge hole (1301) and the main inlet (609) is realized through lifting,
The outer wall of the upper end pipe (1304) is provided with a through hole (1307), the top of the upper end pipe (1304) is fixed with a top control rod (1306), the control rod (1306) is connected with the telescopic part of the telescopic device (17),
A connecting port (1401) is arranged on the outer wall of the tube body of the control sleeve (14), the connecting port (1401) is in through connection with the inner cavity of the control sleeve (14), a main feeding tube (18) is in through connection with the outer part of the connecting port (1401), the main feeding tube (18) is connected with a raw material supply device, the middle of the control sleeve (14) and a telescopic device (17) is fixedly connected through a mounting frame (19), the mounting frame (19) is fixedly connected with a supporting table (9) or other positions of a factory,
The middle tube (1303) and the upper tube (1304) are slidably arranged in the control sleeve (14), the outer diameter of the upper tube (1304) is the same as the inner diameter of the control sleeve (14), when the upper tube (1304) moves up to the uppermost end, the through holes (1307) and the connecting ports (1401) are staggered, when the upper tube (1304) moves down to the lowermost end, the through holes (1307) and the connecting ports (1401) are coaxially arranged and are connected in a penetrating way,
A limiting plate (1308) is arranged at the bottom of the middle pipe (1303), when the upper pipe (1304) moves to the uppermost end, the limiting plate (1308) is abutted with the bottom surface of the control sleeve (14),
The inner diameter of the discharge hole (1301) is the same as the outer diameter of the main inlet (609), or the outer diameter of the discharge hole (1301) is the same as the inner diameter of the main inlet (609), the two are connected by screw threads,
A spiral wire groove (1402) is arranged on the inner wall of the control sleeve (14), a convex point (1305) is arranged on the outer wall of the upper end pipe (1304), the convex point (1305) is arranged in the spiral wire groove (1402) in a sliding way,
The top of the upper die (6) is vertically provided with a protruding rod (606), a pressing rod (15) is arranged above the protruding rod (606), and the pressing rod (15) and a top control rod (1306) are connected with the telescopic part of the telescopic device (17) through a connecting plate (16).
2. A heating panel production apparatus according to claim 1, wherein:
the top surface of the lower die (5) is concavely provided with a sealing groove (502) around the outside of the bottom cavity (501), the bottom surface of the upper die (6) is convexly provided with a sealing ring (602), and the sealing ring (602) is inserted into the sealing groove (502).
3. A heating panel production apparatus as claimed in claim 2, wherein:
The top surface of the lower die (5) is convexly provided with a plurality of guide rods (4) which are vertically arranged, the upper die (6) is provided with a plurality of guide holes (605), and the guide rods (4) are connected with the guide holes (605) in a matching way.
4. A process for producing a heat generating plate of a heat generating plate production apparatus according to claim 3, comprising the steps of:
A. The method comprises the steps of manufacturing a lost foam, wherein the shape design of the lost foam is matched with the shape and arrangement mode of an electric heating wire (2), the lost foam has the function of supporting the electric heating wire (2), and a casting space of a chassis (101) and a wrapping ring (102) is reserved;
B. the upper die (6) is moved upwards, the lost foam and the heating wire (2) are assembled and then put into a bottom cavity (501) of the lower die (5), and then the upper die (6) is closed along the guide rod (4);
C. Six sets of moulds distributed in an annular array around the axis of the mould are arranged on the rotary table (8), the motor (10) is started, the rotation angle of each opening is 60 degrees, the rotary table (8) rotates, the mould in the step B rotates to the lower part of the feeding control device, then the motor (10) stops rotating, the telescopic part of the telescopic device (17) moves downwards, the discharge hole (1301) is in through connection with the main inlet (609), the through hole (1307) is in through connection with the connecting port (1401), the main feeding pipe (18) injects molten metal into the casting cavity of the mould, the lost foam is gasified after contacting the molten metal, gas flows into the inside of the feed-back pipe (12) through the exhaust pipe 7, and is collected,
After the quantitative molten metal is injected into the casting cavity, casting of the heating plate is completed;
D. The mould filled with molten metal is in a cooling state at two stations, cooling, solidifying and shaping are finished at a third station, a feeding control device is arranged right above the stations, a total feeding pipe (18) of the feeding control device is connected with high-pressure air in a penetrating way,
The feeding device (13) and the pressing rod (15) of the station move downwards, clean high-pressure air is injected into the casting cavity after the station is in place, the formed heating plate after cooling is separated from the die,
After the high-pressure air is injected, the feeding device (13) and the pressing rod (15) move upwards, the motor (10) rotates for 60 degrees, the die rotates to the next station,
After the die rotates to the next station, an operator opens the upper die, takes out the heating disc, and then repeats the step B to add a new lost foam and an electric heating wire (2) into the casting cavity;
E. and (5) machining the heating disc blank to obtain a finished product.
5. The process for producing a heat generating plate according to claim 4, wherein:
the lost foam is made of polystyrene foam plastic, and the size of an opening at the upper end of an arc-shaped groove (3) of the lost foam is larger than or equal to 180 degrees.
6. The process for producing a heat generating plate according to claim 4, wherein:
The lost foam comprises at least three layers of arc grooves (3), a circle of heating wires (2) are clamped in each layer of arc grooves (3), and the electric connection columns (201) of the heating wires (2) are vertically upwards arranged.
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| CN202311046041.XA CN117066451B (en) | 2023-08-18 | 2023-08-18 | Heating plate and production device and production process thereof |
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| CN202311046041.XA CN117066451B (en) | 2023-08-18 | 2023-08-18 | Heating plate and production device and production process thereof |
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| CN117066451A (en) | 2023-11-17 |
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