Dismounting jig for insert of injection molding product

Abstract

The utility model relates to the field of automatic injection molding, and provides a dismounting jig for an insert of an injection molding product. The jig comprises a heat conduction plate, a heating wire, a fixed pressing strip, a heat insulation plate, a wire connector and a heat conduction column. The heating wire is embedded in the U-shaped groove of the heat conduction plate, fixed through the fixing pressing strip and electrically connected with the wire connector. The heat insulation plates are connected with the four side edges of the heat conduction plate through the threaded holes respectively, the heat conduction column is connected with the heat conduction plate through threads, and the wire connector is connected with the heat insulation plates through screws. When in use, the jig is placed on an operation table, and the wire connector is connected with a hot runner temperature control cabinet through a wire set. And then the injection molding parts of which the inserts need to be disassembled are sequentially placed on the heat conduction columns to be heated. And after the injection-molded part is softened, the injection-molded part can be easily taken down, and the insert can be disassembled. According to the utility model, the problem that defective inserts are difficult to take out is solved, the time is saved, the working efficiency is improved, the repeated utilization rate of the inserts is increased, and the production cost caused by waste of the inserts is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automatic injection molding, in particular to a dismounting jig for injection molding product inserts. BACKGROUND

[0002] In the field of self-injection molding insert removal, hot air guns are usually used for blowing test heating operations. By blowing test with a hot air gun: the insert on the plastic part is heated and softened, and then the insert is removed by a pin. However, the temperature of manual blowing test is difficult to control, when the temperature is too high, the insert may have residual plastic; when the temperature is too low, the insert is difficult to remove. In this case, it is difficult for manual to ensure the consistency of the temperature. Therefore, the current practice is to manually heat and remove the insert, and then perform secondary selection. This not only increases the labor intensity of workers, but also increases the production cost. In order to improve production efficiency and product quality, reduce the labor intensity of workers, it is necessary to improve the automatic equipment to perform insert removal heating operation. This not only can improve the production efficiency and quality stability, but also can reduce the labor cost and waste of labor resources. SUMMARY

[0003] In view of the shortcomings of the prior art, the utility model provides a jig for dismounting injection molding product inserts, aiming at heating the plastic part insert through a plurality of heat conduction columns, thereby completing the operation of synchronously heating a plurality of plastic part inserts, and facilitating the removal of the insert. In order to achieve the above object, the technical scheme of the present application is: a dismounting jig for injection molding product inserts, comprising a heat conduction plate, a heating wire, a fixed pressing strip, a heat insulation plate, a connector and a heat conduction column, characterized in that: a plurality of upper threaded holes and side threaded blind holes are arranged on the heat conduction plate, the heating wire is arranged in the U-shaped groove on the bottom surface of the heat conduction plate and is fixed along the U-shaped groove by the fixed pressing strip, the heat conduction column is connected to the upper threaded hole of the heat conduction plate through a threaded connection, the heat insulation plate is arranged around the four side edges of the heat conduction plate and is connected and fixed with the side threaded blind hole through a screw, and the connector is fixedly installed at one end of one of the heat insulation plates and is electrically connected with the heating wire.

[0004] The technical effect of the utility model is: the efficiency of dismounting the plastic part insert is improved. The novel dismounting jig realizes synchronous heating through a plurality of heat conduction columns, effectively solves the problem of difficult removal of the plastic part insert, realizes the operation of synchronous heating cycle removal of the insert with consistent temperature. The dismounting operation of the insert is completed by the automatic equipment, which reduces the dependence on human resources, reduces the labor cost, reduces the labor intensity of workers, improves the overall efficiency of production operation, and reduces the processing cost of secondary use of the insert. At the same time, the unstable factors of uncontrollable temperature are avoided, the production efficiency is improved, and the stability of product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1It is the three-dimensional structure schematic diagram of the utility model;

[0006] Figure 2 It is the three-dimensional exploded schematic diagram of the utility model;

[0007] Figure 3 It is the bottom three-dimensional schematic diagram of the utility board of the utility model;

[0008] Figure 4 It is the heating wire and the national pressure strip installation section schematic diagram of the utility model;

[0009] Figure 5 It is the three-dimensional schematic diagram of the utility model heat conduction column;

[0010] Figure 6 It is the embodiment schematic diagram of the utility model;

[0011] Figure 7 It is Figure 6 The bottom enlarged view of;

[0012] Figure 8 It is the cross screwdriver before removing the insert of the embodiment of the utility model;

[0013] Figure 9 It is the cross screwdriver after removing the insert of the embodiment of the utility model.

[0014] In the drawing: 1, heat conduction plate; 1-1, upper threaded hole; 1-2, side threaded blind hole; 2, heating wire; 3, fixed pressure strip; 4, heat insulation plate; 4-1, screw hole; 4-2, wire connector connecting threaded hole; 4-3, wire hole; 5, wire connector; 6, heat conduction column; 7, insert; 8, cross screwdriver; 9, injection molding part. Specific implementation

[0015] As Figures 1-4 Indicated, a kind of for the removal tool of injection molding product insert, including heat conduction plate 1, heating wire 2, fixed pressure strip 3, heat insulation plate 4, wire connector 5 and heat conduction column 6.

[0016] Heat conduction plate 1 is made of steel plate material, can be processed into different shapes according to actual needs. For example, rectangular parallelepiped, the top surface of heat conduction plate 1 is provided with a plurality of upper threaded holes 1-1 for connecting heat conduction column 6, four side edges are respectively provided with a plurality of side threaded blind holes 1-2 for connecting heat insulation plate 4, and the bottom surface is provided with a U-shaped groove 1-3 for embedding heating wire 2;

[0017] Heating wire 2 is U-shaped structure, corresponding to the U-shaped groove 1-3 of heat conduction plate 1, and the cross section is oval, and the size is less than the width of the U-shaped groove 1-3, so that heating wire 2 can cover the entire groove. After heating wire 2 is placed in the groove, it is fixed by fixed pressure strip 3 along the U-shaped groove 1-3;

[0018] The fixing strip 3 has a U-shaped structure, is made of copper, and has a trapezoidal cross-section. The width of the bottom is greater than the width of the U-shaped groove 1-3 of the heat-conducting plate 1, thereby ensuring a tight fit between the heating wire 2 and the U-shaped groove 1-3 and ensuring the stability of the heating wire 2.

[0019] Four heat insulation plates 4 are provided, each installed on one of the four sides of the heat-conducting plate 1. The size of each heat insulation plate 4 is consistent with the corresponding side. A screw through hole 4-1 is provided on the upper edge of the heat insulation plate 4, corresponding to the threaded blind hole 1-2 on the side of the heat-conducting plate 1, for fixing the heat insulation plate 4 to the heat-conducting plate 1 with screws. One end of a long heat insulation plate 4 has four rectangularly distributed connector threaded holes 4-2 for installing connectors 5; in addition, a wire hole 4-3 is provided in the center between the four connector threaded holes 4-2 for inserting the connecting wire of the heating wire 2. The heat insulation plate 4 is made of a low thermal conductivity material to reduce heat loss, while ensuring a stable connection to the heat-conducting plate 1 via fastening screws.

[0020] The connector 5 is equipped with a universal 24-pin female interface and has screw holes at the four corners, which makes it easy to fix the connector 5 to one end of the heat insulation plate 4 with screws.

[0021] like Figure 5 As shown, the heat-conducting column 6 adopts a bolt structure with a stepped cylinder 6-1 at the top to accommodate inserts of different inner diameters. During use, the insert is fitted onto the stepped cylinder 6-1 to ensure uniform heat conduction. The hexagonal bolt head 6-2 of the heat-conducting column 6 is located in the middle of the bolt shank, and the bottom is provided with a thread 6-3 for installing the heat-conducting column 6 into the threaded through hole 1-1 of the heat-conducting plate 1 via the thread.

[0022] When installing the fixture, first place the heating wire 2 into the U-shaped groove 1-3 of the heat-conducting plate 1, and fix the heating wire 2 with the fixing strip 3; then, use screws to fix the four heat insulation plates 4 to the four sides of the heat-conducting plate 1 respectively; then, install the connector 5 at one end of one of the heat insulation plates 4, and connect and fix the power connection wire of the heating wire 2 through the wire hole 4-3 to the connector 5; finally, install the heat-conducting pillars 6 in the threaded through holes 1-1 of the heat-conducting plate 1 respectively.

[0023] Example: Figures 6-9 As shown, during use, the fixture is placed on the operating table, and the heating wire 2 is heated by connecting the fixture's connector 5 through the 24-pin male connector of the hot runner temperature control cabinet. Once the temperature of the heat-conducting plate 1 reaches the plastic melting temperature, the injection-molded parts 9 that need to be disassembled (insertions 7) are sequentially placed on the heat-conducting pillars 6 and heated. After the plastic softens, the injection-molded parts 9 are removed. A Phillips screwdriver 8 is inserted into the center hole of the insert 7, and the injection-molded parts 9 and the Phillips screwdriver 8 are positioned at a 45° angle to the side to pry out the insert 7, completing the entire insert removal process.

Claims

1. A dismounting jig for injection-molding product inserts, comprising a heat-conducting plate (1), heating wires (2), fixed pressure strips (3), heat-insulating plates (4), a wiring device (5) and heat-conducting columns (6), characterized in that: The heat-conducting plate (1) is provided with a plurality of upper threaded through holes (1-1) and side threaded blind holes (1-2), the heating wire (2) is arranged in the U-shaped groove (1-3) on the bottom surface of the heat-conducting plate (1) and is fixed along the U-shaped groove (1-3) by the fixed pressing strip (3); the heat-conducting column (6) is connected to the upper threaded through hole (1-1) of the heat-conducting plate (1) through screwing, the heat-insulating plate (4) is arranged around the four side edges of the heat-conducting plate (1) and is fixedly connected to the side threaded blind holes (1-2) through screws, the wiring device (5) is fixedly installed at one end of one of the heat-insulating plates (4) and is electrically connected to the heating wire (2).

2. The demolding jig for an insert for an injection-molded product according to Claim 1, wherein The cross section of the heating wire (2) is oval, and the size is smaller than the cross section width of the U-shaped groove (1-3) of the heat-conducting plate (1), so that the heating wire (2) can be closely arranged in the U-shaped groove (1-3) and firmly pressed by the fixed pressing strip (3).

3. The demolding jig for an insert for an injection-molded product according to claim 1 or 2, characterized in that, The fixed pressing strip (3) is in a U-shaped structure, is made of a high-heat-conducting metal, and has a trapezoidal cross section, and the lower base width is greater than the cross section width of the U-shaped groove (1-3) of the heat-conducting plate (1), so as to realize close fixing and high-efficiency heat conduction of the heating wire (2).

4. The demolding jig for an insert for an injection-molded product according to Claim 1, wherein The heat-conducting column (6) is in a bolt structure, the top thereof is a stepped cylinder, is used for adapting to inserts with different inner diameters, and the bottom is connected to the upper threaded through hole (1-1) of the heat-conducting plate (1) through screwing.

5. The demolding jig for an insert for an injection-molded product according to Claim 4, wherein The heat-insulating plate (4) is made of a material with excellent heat-insulating performance, reduces the loss of heat to the outside, and is stably connected to the heat-conducting plate (1) through fastening screws located at the four side edges.

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