CN219577272U - Insert heating device before casting - Google Patents

Abstract

The utility model discloses a heating device for an insert before casting, which comprises an insulating plate, a metal block, an insert and a frequency converter, wherein the top end of the insulating plate is hollowed out, the metal block is embedded in the insulating plate, the lower end of the metal block is fixed with the insulating block, and a copper rod is embedded in the insulating block; the metal block is provided with a plurality of through holes, and the insert is inserted into the metal block through the through holes until the lower end of the insert abuts against the copper rod; the copper bar is connected with the frequency converter through an electric wire to output voltage, and converts electric energy into heat energy to heat the insert; compared with the prior art, the utility model adopts electric heating, outputs voltage through the frequency converter, converts the voltage into heat energy, heats the insert, and does not leave impurities on the surface of the insert after heating; meanwhile, the device has the advantages of simple structure, flexible and convenient use and high operation automation degree.

Description

Insert heating device before casting

Technical Field

The utility model relates to the technical field of casting processing, in particular to a heating device for a cast front insert.

Background

When the temperature of the insert is controlled before the casting of the automobile aluminum alloy part, on one hand, the casting molding is influenced due to lack of the control of the temperature of the insert, and the assembly of the subsequent working procedure is seriously influenced due to the unattractive appearance of the product, so that the reject rate is climbed. On the other hand, because the automobile spare and accessory parts belong to aluminum alloy materials, in the structure of high-temperature casting and constant-temperature condensation molding in casting operation, the filling of aluminum liquid around the spare and accessory parts and the inserts is insufficient, so that the shrinkage cavity and the shrinkage cavity around the inserts are easy to appear when the inserts are not heated and cast, the condensation failure of other parts of the product can be caused seriously, the internal defect of a large-area product is caused, and the yield and the function of the aluminum alloy product are seriously influenced.

In order to solve the problem, no specific fixture is used for heating a winding rotary insert, so most of the heating device is heated by a fire baking mode before casting, and the fire baking mode has a plurality of adverse factors, generally, the temperature of a die in low-pressure casting is upward at 250 ℃, the fire baking insert cannot reach the temperature for casting preparation, on the other hand, impurities remain on the convenient surface of the insert after the fire baking is finished, and the adhesion degree of the insert is affected after the impurities contact clean aluminum liquid, namely shrinkage cavities and shrinkage porosity; the mode is low in production efficiency, and a large amount of waste products exist; therefore, for this current situation, there is an urgent need to design a special device for electric heating, which meets the actual production requirements.

Disclosure of Invention

Aiming at the defects and the shortcomings of the prior art, the utility model provides a heating device for an insert before casting, which aims to improve the production efficiency and simultaneously provides the following technical scheme for the purpose of electric heating.

The utility model provides a casting front inserts heating device, includes insulation board, metal piece, inserts and converter, the fretwork of insulation board top, the metal piece is inlayed in the insulation board, the metal piece lower extreme is fixed with the insulation piece, inlay the bar copper in the insulation piece; the metal block is provided with a plurality of through holes, and the insert is inserted into the metal block through the through holes until the lower end of the insert abuts against the copper rod; the copper bar is communicated with the frequency converter through an electric wire to output voltage, and electric energy is converted into heat energy to heat the insert.

Compared with the prior art, the utility model adopts electric heating, outputs voltage through the frequency converter, converts the voltage into heat energy, heats the insert, and does not leave impurities on the surface of the insert after heating; meanwhile, the device has the advantages of simple structure, flexible and convenient use and high operation automation degree.

Further, the diameter of the upper end of the through hole is larger than that of the lower end of the through hole, an electric mesh is arranged at the upper end of the through hole, and the electric mesh wraps the part of the insert arranged at the upper end of the through hole.

Through the improvement, the diameter of the upper section of the through hole is larger than that of the lower end, and the part of the insert at the upper end of the through hole can be wrapped by the electric mesh, so that the insert is protected.

Further, the gap between the metal block and the electric mesh is unilateral 0.5mm.

Through above improvement, the clearance of electricity mesh and metal piece is unilateral 0.05mm, exists the clearance and conveniently takes out the electricity mesh, easily later stage change.

Further, the insert and the copper bar are coaxially arranged, the lower end of the insert and the copper bar are abutted against each other to form a concrete finger, the upper end of the copper bar is provided with a matching groove, and the insert is inserted into the matching groove and is abutted against the copper bar.

Through above improvement, be provided with the cooperation groove on the bar copper, the inserts the cooperation groove and carries out further contact with the bar copper for the bar copper is inseparabler with the cooperation of inserts, can carry out heat transfer better when heating the inserts.

Further, a jackscrew is arranged on one side of the insulating block, and the jackscrew abuts against the copper rod.

Through above improvement, install the jackscrew in insulating piece one side, the jackscrew supports the bar copper for the bar copper is further fixed, prevents the bar copper landing, influences the use of device.

Further, the insulating block is fixed at the lower end of the metal block, specifically, the metal block is fixed with the insulating block through a screw.

Through above improvement, the metal block is interlocked with the insulating block through the screw, can make the metal block and the insulating block fix together better, has improved the steadiness that the device connects.

Further, an outer cover is arranged at the lower end of the insulating plate, and a threading hole for the dotted line to pass through is formed in the outer cover.

Through the improvement, the outer cover arranged at the lower end of the insulating plate can protect the inside of the insulating plate, and meanwhile, the wiring holes in the outer cover can enable the wiring to be tidier, so that the attractiveness is improved.

Further, nylon plates such as pa66 and mc901 are adopted as the insulating plates and the insulating blocks.

Through above improvement, adopt nylon materials can improve the insulating effect of insulation board and insulating piece, the security when having improved the use.

Drawings

FIG. 1 is an overall block diagram of a cast front insert heating apparatus;

FIG. 2 is a bottom block diagram of an insulation plate of a cast-in-place heating device;

FIG. 3 is a top block diagram of an insulation plate of a cast-in-place heating device;

FIG. 4 is a diagram showing the connection relationship between an insert and a copper rod of a heating device for an insert before casting;

wherein, 1, insulating board; 2. a metal block; 2.1, through holes; 3. an insert; 4. a frequency converter; 4.1, wires; 5. an insulating block; 6. a copper bar; 6.1, a matching groove; 7. electric mesh; 8. a jackscrew; 9. an outer cover; 9.1, threading holes.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The heating device for the insert before casting shown in fig. 1 and 4 comprises an insulating plate 1, a metal block 2, an insert 3 and a frequency converter 4, wherein the top end of the insulating plate 1 is hollowed out, the metal block 2 is embedded in the insulating plate 1, an insulating block 5 is fixed at the lower end of the metal block 2, and a copper rod 6 is embedded in the insulating block 5; the metal block 2 is provided with a plurality of through holes 2.1, and the insert 3 is inserted into the metal block 2 through the through holes 2.1 until the lower end of the insert 3 abuts against the copper rod 6; the copper bar 6 is connected with the frequency converter 4 through the electric wire 4.1, and the frequency converter 4 outputs voltage.

The insulating plate 1 is made of common pa66, mc901 and other nylon plates, the metal block 2 is embedded in the middle of the insulating plate 1, a plurality of through holes 2.1 are formed in the metal block 2, the diameter of the upper end of each through hole 2.1 is larger than that of the lower end, and the insert 3 is inserted into the metal block 2 through the through hole 2.1; install electric mesh 7 in the through-hole 2.1 upper end, electric mesh 7 can wrap up the part that inserts 3 set up in through-hole 2.1 upper end, and electric mesh 7 is unilateral 0.05mm with the clearance of metal piece 2, conveniently takes out and is convenient for change.

The lower end of the metal block 2 is provided with an insulating block 5, and the insulating block 5 is also made of common nylon plates such as pa66, mc901 and the like as the insulating plate 1; the insulation block 5 and the metal block 2 are fixed through screws, a processed copper bar 6 is embedded in the metal block 2, the copper bar 6 and the insert 3 are coaxially arranged, meanwhile, a matching groove 6.1 is formed in the upper end of the copper bar 6, and the insert 3 is inserted into the matching groove 6.1 to further prop against the copper bar 6; a jackscrew 8 is arranged on one side of the insulating block 5, and the jackscrew 8 penetrates through the insulating block 5 to prop against the copper rod 6 so as to prevent falling.

An outer cover 9 is further arranged below the insulating plate 1, and a threading hole 9.1 is further formed in the outer cover 9 and used for enabling the whole wiring of the device to be tidier.

The lower end is communicated with the frequency converter 4 to heat the insert 3, and the frequency converter 4 can control the output voltage, so that the time for heating the insert 3 to the designated temperature is changed; in operation, the insert 3 is inserted into the metal block 2, and the electric energy is converted into heat energy by the voltage output by the frequency converter 4, so that the insert 3 is heated for 20-30S.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (8)

1. A heating device for a cast insert, comprising: the novel high-voltage power supply comprises an insulating plate (1), a metal block (2), an insert (3) and a frequency converter (4), wherein the top end of the insulating plate (1) is hollowed out, the metal block (2) is embedded in the insulating plate (1), the lower end of the metal block (2) is fixedly provided with an insulating block (5), and a copper rod (6) is embedded in the insulating block (5); a plurality of through holes (2.1) are formed in the metal block (2), and the inserts (3) penetrate through the through holes (2.1) and are inserted into the metal block (2) until the lower ends of the inserts (3) are propped against the copper bars (6); the copper bar (6) is connected with the frequency converter (4) through a wire (4.1) to output voltage, and converts electric energy into heat energy to heat the insert (3).

2. A pre-cast insert heating apparatus as defined in claim 1 wherein: the diameter of the upper end of the through hole (2.1) is larger than that of the lower end, an electric mesh (7) is arranged at the upper end of the through hole (2.1), and the electric mesh (7) wraps the part of the insert (3) arranged at the upper end of the through hole (2.1).

3. A pre-cast insert heating apparatus as defined in claim 2 wherein: the gap between the metal block (2) and the electric mesh (7) is 0.5mm on one side.

4. A pre-cast insert heating apparatus as defined in claim 1 wherein: the copper bar is characterized in that the insert (3) and the copper bar (6) are coaxially arranged, the lower end of the insert (3) and the copper bar (6) are abutted against to each other, a matching groove (6.1) is formed in the upper end of the copper bar (6), and the insert (3) is inserted into the matching groove (6.1) and is abutted against the copper bar (6).

5. A pre-cast insert heating apparatus as defined in claim 1 wherein: a jackscrew (8) is arranged on one side of the insulating block (5), and the jackscrew (8) abuts against the copper rod (6).

6. A pre-cast insert heating apparatus as defined in claim 1 wherein: the insulation block (5) is fixed at the lower end of the metal block (2), specifically, the metal block (2) is fixed with the insulation block (5) through screws.

7. A pre-cast insert heating apparatus as defined in claim 1 wherein: an outer cover (9) is arranged at the lower end of the insulating plate (1), and a threading hole (9.1) for the electric wire (4.1) to pass through is formed in the outer cover (9).

8. A pre-cast insert heating apparatus as defined in claim 1 wherein: and nylon plates such as pa66 and mc901 are adopted as the insulating plate (1) and the insulating block (5).