An easy-to-demold injection molding device for a control panel of a household appliance

Abstract

The present invention proposes an injection molding device for a control panel for household appliances that is easy to demold, and relates to the field of mold technology, including a concave mold and a convex mold, a finished product groove is provided on the concave mold, a core block is installed in the finished product groove, an annular groove is provided around the top of the core block, and an installation groove is provided on the inner wall of the finished product groove, and a plurality of cut-off plates are installed in the installation groove, and the plurality of cut-off plates can extend out of the installation groove to be assembled into an annular structure, and the annular structure can block the top opening of the annular groove, and the top surface of the cut-off plate is flush with the top surface of the core block; a circular block is installed on the bottom surface of the convex mold, and a plurality of material receiving grooves are provided on the bottom surface of the circular block. The present invention proposes an injection molding device for a control panel for household appliances that is easy to demold, and through the provision of the concave mold, the convex mold, the core block, the cut-off plate, the circular block and the extrusion block, after cooling and molding, the material at the top corners and bottom corners in the mold cavity can be directly cut off, thereby reducing the situation of material shortage in the product and ensuring the quality of the product.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection molding device for a control panel of a household appliance which is easy to demould. Background Art

[0002] Plastic molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete configurations and precise dimensions. Due to the wide variety of plastic varieties and processing methods, the structures of plastic molding machines and plastic products vary in complexity, and the types and structures of plastic molds are also diverse. In the production process of home appliance control panels, injection molding is usually performed. Usually, the concave mold and the convex mold are assembled together to form a closed mold cavity, and then the melted plastic is injected into the mold cavity of the mold, and the plastic is cooled and formed in the mold cavity. The ejection system then ejects the product from the mold cavity and leaves the mold. Finally, the mold is closed for the next injection molding. The entire injection molding process is cyclical, but in actual situations, during the injection molding process, the mold cavity is a relatively closed space. When injecting the melted plastic, there may be a lack of material at the corners of the mold cavity, which may lead to a lack of material in the product, affecting the quality of the finished product of the home appliance control panel. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes an injection molding device for a control panel for household appliances which is easy to demould.

[0004] The present invention provides an easy-to-demold injection molding device for a control panel of a household appliance, comprising a concave mold and a convex mold, wherein a finished product groove is provided on the concave mold, a core block is installed in the finished product groove, an annular groove is provided around the top of the core block, an installation groove is provided on the inner wall of the finished product groove, a plurality of cut-off plates are installed in the installation groove, and the plurality of cut-off plates can extend out of the installation groove and be assembled into an annular structure, the annular structure can block the top opening of the annular groove, and the top surface of the cut-off plate is flush with the top surface of the core block;

[0005] A circular block is installed on the bottom surface of the punch, and a plurality of material receiving grooves are opened on the bottom surface of the circular block. When the circular block is against the top surface of the die, the material receiving groove is connected with the finished product groove. An extrusion block is slidably installed in the material receiving groove, and the extrusion block can block the material receiving groove. The bottom surface of the extrusion block is flush with the bottom surface of the circular block.

[0006] Preferably, the cross-section of the extrusion block is trapezoidal, and when the extrusion block abuts against the inner wall of the receiving trough, the extrusion block blocks the bottom opening of the receiving trough, and the extrusion block and the inner wall of the receiving trough form a closed receiving chamber.

[0007] Preferably, a slider is fixedly connected to the extrusion block, and the inner wall of the material receiving trough is provided with a displacement groove slidably matched with the slider, and the inner wall of the displacement groove is provided with a telescopic hole, and a driving rod is fixedly connected to the slider, and the driving rod is slidably installed in the telescopic hole, and a driving spring is also installed in the telescopic hole, and the two ends of the driving spring respectively abut against the end inner wall of the telescopic hole and the end of the driving spring, and the driving spring can drive the extrusion block to slide in the material receiving trough and open the material receiving trough.

[0008] Preferably, a receiving groove capable of receiving the circular block is provided at the bottom of the male mold, and the outer inner wall of the receiving groove is an inclined surface. When the circular block is retracted in the receiving groove, the side surface of the extrusion block abuts against the outer inner wall of the receiving groove and slides to drive the extrusion block to slide in the receiving groove;

[0009] The convex mold is provided with an ejection structure, and the ejection structure is used to eject the circular block out of the receiving groove.

[0010] Preferably, the ejection structure includes a downward moving rod and an ejection spring; one end of the downward moving rod is fixedly connected to the top surface of the circular block, and the top inner wall of the storage groove is provided with a lifting hole that slides with the downward moving rod. The ejection spring is installed in the lifting hole, and the two ends of the ejection spring are respectively against the top inner wall of the lifting hole and the top of the downward moving rod.

[0011] Preferably, a plurality of positioning columns are fixedly mounted on the bottom surface of the male mold, and positioning holes matched with the positioning columns are opened on the top surface of the female mold. The number of the positioning holes is the same as the number of the positioning columns and are arranged in one-to-one correspondence.

[0012] Preferably, the bottom of the core block is fixedly connected to a bottom plate, a movement cavity slidably matched with the bottom plate is opened in the concave mold, a lifting column is fixedly connected to the movement cavity, one end of the lifting column passes through the concave mold and extends into the positioning hole, and the end of the positioning column can abut against the end of the lifting column and push the lifting column to descend in the positioning hole;

[0013] A lifting spring is installed in the movement cavity, and two ends of the lifting spring are respectively connected to the bottom inner wall of the movement cavity and the bottom surface of the bottom plate.

[0014] Preferably, a transverse rod is fixedly connected to the side of the truncation plate, one end of the transverse rod passes through the die and extends into the positioning hole, the bottom end of the positioning column is an inclined surface, the end of the transverse rod can slide with the inclined surface of the bottom end of the positioning column, the transverse rod is circumferentially connected with a boss, a limiting motion groove that slides with the boss is opened in the die, a return spring is installed in the limiting motion groove, and both ends of the return spring respectively abut against the end inner wall of the limiting motion groove and the boss.

[0015] Preferably, the bottom surface of one end of the circular block located in the finished product groove is an inclined surface, and the inclined surface at the bottom of the circular block can be slidably matched with the outer periphery of the core block.

[0016] Preferably, cooling channels communicating with the movement cavity are provided on both sides of the concave mold;

[0017] An injection channel is provided through the top of the male mold.

[0018] The invention provides an easy-to-demold injection molding device for a control panel for household appliances, which has the following beneficial effects: by providing a concave mold, a convex mold, a core block, a cutting plate, a circular block and an extrusion block, the material at the top and bottom corners in the mold cavity can be directly cut off after cooling and molding, thereby reducing the situation of material shortage in the product and ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an easy-to-demold home appliance control panel injection molding device proposed by the present invention;

[0020] Figure 2 A cross-sectional view of an easy-to-demold control panel injection molding device for home appliances proposed by the present invention;

[0021] Figure 3 A cross-sectional view of the positions of the circular block and the extrusion block on the male mold in an injection molding device for a control panel for household appliances that is easy to demould provided by the present invention;

[0022] Figure 4 The present invention proposes an easy-to-demold home appliance control panel injection molding device Figure 2 Enlarged view of point A in the middle;

[0023] Figure 5 The present invention proposes an easy-to-demold home appliance control panel injection molding device Figure 2 Enlarged view of point B in the middle;

[0024] Figure 6 A three-dimensional cross-sectional view of a concave mold in an injection molding device for a control panel for household appliances that is easy to demould provided by the present invention;

[0025] Figure 7 This is a schematic structural diagram of a circular block, a material extrusion block and a downward moving rod in an injection molding device for a control panel for household appliances that is easy to demould proposed by the present invention;

[0026] Figure 8 This is a bottom-up structural schematic diagram of a circular block, a material extrusion block and a downward moving rod in an injection molding device for a control panel for household appliances that is easy to demould, as proposed by the present invention;

[0027] Fig. 9This is a schematic structural diagram of a core block, a bottom plate and a lifting column in an injection molding device for a control panel for household appliances that is easy to demould proposed by the present invention;

[0028] Fig.10 The present invention provides a schematic structural diagram of a cut-off plate and a transverse rod in an injection molding device for a control panel for household appliances that is easy to demould.

[0029] In the figure: 1. die; 2. punch; 3. core block; 4. cut-off plate; 5. circular block; 6. extrusion block; 7. slider; 8. drive rod; 9. drive spring; 10. down-moving rod; 11. ejection spring; 12. positioning column; 13. positioning hole; 14. bottom plate; 15. lifting column; 16. lifting spring; 17. transverse rod; 18. return spring; 19. cooling channel; 20. injection channel. DETAILED DESCRIPTION

[0030] Reference Figure 1-Figure 10 The present invention provides an injection molding device for a control panel of a household appliance that is easy to demold, comprising a concave mold 1 and a convex mold 2. The concave mold 1 is provided with a finished product groove. When the concave mold 1 and the convex mold 2 are assembled together, the convex block on the convex mold 2 is inserted into the finished product groove of the concave mold 1 to form a mold cavity. An injection molding channel 20 is provided through the top of the convex mold 2, and the melted plastic is injected into the mold cavity through the injection molding channel 20. A core block 3 is installed in the finished product groove. An annular groove is provided around the top of the core block 3. An installation groove is provided on the inner wall of the finished product groove. A plurality of truncated plates 4 are installed in the installation groove. The plurality of truncated plates 4 can extend out of the installation groove and be assembled into an annular structure. The annular structure can The top opening of the annular groove is sealed, and the top surface of the cut-off plate 4 is flush with the top surface of the core block 3; in actual situations, after the melted plastic is injected, the plastic enters the mold cavity, and the plastic also enters the annular groove (the annular groove is located at the bottom corner of the mold cavity). After a certain amount of plastic is injected, the cut-off plate 4 enters the mold cavity and cuts off the annular groove, so that the annular groove and the mold cavity are separated. At the same time, the plastic at the corner position at the bottom of the mold cavity is cut off from the middle position by the cut-off plate 4, and the original bottom plastic is cut off in the annular groove, thereby ensuring the integrity of the corner position at the bottom of the control panel and reducing quality problems of the finished control panel.

[0031] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown in , a circular block 5 is installed on the bottom surface of the punch 2, and a plurality of material receiving grooves are opened on the bottom surface of the circular block 5 (the material receiving grooves are located at the corners of the top of the mold cavity). When the circular block 5 is against the top surface of the concave mold 1, the material receiving groove is connected with the finished product groove, and an extrusion block 6 is slidably installed in the material receiving groove. The extrusion block 6 can block the material receiving groove, and the bottom surface of the extrusion block 6 is flush with the bottom surface of the circular block 5. In actual situations, the extrusion block 6 starts as Figure 3 As shown in the figure, the bottom opening of the receiving trough is opened and connected with the finished product trough. After the melted plastic is injected, the plastic enters the receiving trough. When the plastic injection is completed, the receiving trough is the top corner position of the entire product. Then the sliding extrusion block 6 squeezes the volume in the receiving trough to become smaller, and squeezes the plastic in the receiving trough out, and closes the bottom opening of the receiving trough. Some plastic remains in the receiving trough, which is the same as the circular trough. In addition, after the plastic in the receiving trough is squeezed out, the plastic can also be squeezed and filled in the mold cavity, thereby ensuring the quality of the control panel product.

[0032] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown in the figure, the cross-sectional view of the extrusion block 6 is a trapezoid. When the extrusion block 6 is against the inner wall of the receiving trough, the extrusion block 6 blocks the bottom opening of the receiving trough, and the extrusion block 6 and the inner wall of the receiving trough form a closed receiving chamber. When the extrusion block 6 squeezes the volume in the receiving trough, the extrusion block 6 blocks the bottom opening of the receiving trough, so that the plastic can be retained in the receiving chamber, thereby cutting off the parts where material shortage may occur, reducing the quality problems caused by material shortage of the control panel products.

[0033] like Figure 2 , Figure 3 and Figure 4As shown in the figure, a slider 7 is fixedly connected to the extruding block 6, a displacement groove that slides with the slider 7 is opened on the inner wall of the material receiving groove, and a telescopic hole is opened on the inner wall of the displacement groove. A driving rod 8 is fixedly connected to the slider 7, and the driving rod 8 is slidably installed in the telescopic hole. A driving spring 9 is also installed in the telescopic hole. The two ends of the driving spring 9 respectively abut against the inner wall of the end of the telescopic hole and the end of the driving spring 9. The driving spring 9 can drive the extruding block 6 to slide in the material receiving groove and open the material receiving groove. In the normal state, the driving spring 9 works, and the compressed driving spring 9 pushes the driving rod 8 to move in the telescopic hole, and the driving rod 8 drives the slider 7 to move synchronously. The slider 7 drives the extrusion block 6 to move horizontally, so that the volume of the receiving trough becomes larger and the opening at the bottom of the receiving trough is opened. When the molten plastic is injected, it can be ensured that the plastic enters the receiving trough, so that the receiving trough is the top position of the mold cavity. Even if there is a lack of material at the corners, this position is located in the receiving trough. Before molding, the volume in the receiving trough can be squeezed to squeeze out the internal plastic and separate the position of the lack of material from the mold cavity. After the molding of the control panel is completed, the receiving trough is opened under the action of the driving spring 9, so that the waste material in the receiving chamber falls out, thereby reducing the blockage in the receiving trough.

[0034] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown in the figure, a receiving groove capable of receiving the circular block 5 is provided at the bottom of the punch 2, and the outer inner wall of the receiving groove is an inclined surface. When the circular block 5 is retracted in the receiving groove, the side of the extrusion block 6 abuts against the outer inner wall of the receiving groove and slides together, driving the extrusion block 6 to slide in the receiving groove; an ejection structure is installed on the punch 2, and the ejection structure is used to eject the circular block 5 out of the receiving groove. During injection molding, the punch 2 moves downward, and the circular block 5 descends with the punch 2. The circular block 5 first abuts against the top of the die 1, and the top opening of the finished product groove is blocked by the circular block 5, and then the melted plastic is injected into the mold cavity through the injection channel 20 at the top, and the plastic fills the mold cavity (as well as the annular groove and the receiving groove). After the mold cavity, the annular groove and the receiving groove are filled with plastic, the punch 2 continues The plastic in the receiving groove is compressed and squeezed out, and the extruded plastic squeezes the plastic in the mold cavity, so that the plastic in the mold cavity is better extruded and enriched, so that the plastic fills the mold cavity better, and at the same time, the receiving groove is turned into a relatively closed receiving chamber, and the top corner position is cut off from the mold cavity, so as to reduce the shortage of material at the top corner position of the finished product. At the same time, the cutting plate 4 at the bottom also blocks the annular groove, and cuts off the plastic in the annular groove from the plastic in the mold cavity, so as to reduce the shortage of material at the bottom corner position of the product.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown in the figure, the ejection structure includes a downward moving rod 10 and an ejection spring 11; one end of the downward moving rod 10 is fixedly connected to the top surface of the circular block 5, and the top inner wall of the receiving groove is provided with a lifting hole that slides with the downward moving rod 10, and the ejection spring 11 is installed in the lifting hole. The two ends of the ejection spring 11 are respectively against the top inner wall of the lifting hole and the top of the downward moving rod 10. The rebound effect of the ejection spring 11 drives the downward moving rod 10 to extend out of the lifting hole, so that the circular block 5 follows the downward moving rod 10 to descend synchronously, thereby facilitating the sliding of the extrusion block 6 in the receiving groove and increasing the volume of the receiving groove.

[0036] like Figure 1 , Figure 2 and Fig. 9 As shown in the figure, a plurality of positioning posts 12 are fixedly installed on the bottom surface of the punch 2, and a positioning hole 13 matched with the positioning posts 12 is opened on the top surface of the die 1. The number of the positioning holes 13 is the same as the number of the positioning posts 12 and they are arranged one by one. When the punch 2 and the die 1 are closed, the positioning posts 12 are first inserted into the positioning holes 13, so as to limit the position between the punch 2 and the die 1, thereby ensuring the uniform position of the punch 2 and the die 1, ensuring the accuracy of the closing position, and ensuring the quality of the finished product.

[0037] like Figure 2 , Figure 6 and Fig. 9As shown in the figure, the bottom of the core block 3 is fixedly connected with a bottom plate 14, a movement cavity which is slidably matched with the bottom plate 14 is opened in the die 1, and a lifting column 15 is fixedly connected to the movement cavity. One end of the lifting column 15 passes through the die 1 and extends into the positioning hole 13. The end of the positioning column 12 can abut against the end of the lifting column 15 and push the lifting column 15 down in the positioning hole 13; a lifting spring 16 is installed in the movement cavity, and the two ends of the lifting spring 16 are respectively connected to the bottom inner wall of the movement cavity and the bottom surface of the bottom plate 14. In actual use, the compressed lifting spring 16 works, and the lifting spring 16 lifts the bottom plate 14. The bottom plate 14 can lift the core block 3 and can eject the product in the finished product groove, and the contact The surface is extremely large, which can ensure that the product can be stably ejected from the finished product groove, reduce the occurrence of too small lifting contact surface when the product is lifted up, and reduce the occurrence of deflection of the product when it is lifted up due to too small contact surface, thereby ensuring the quality of the product. When the punch 2 descends, the positioning column 12 is inserted into the positioning hole 13, and the bottom end of the positioning column 12 abuts against the top of the lifting column 15, pushing the lifting column 15 to descend synchronously, and then the lifting column 15 pushes the bottom plate 14 to descend synchronously, and then the bottom plate 14 drives the core block 3 to descend synchronously, until the annular groove at the top of the core block 3 reaches the position of the cutting plate 4, and then the cutting plate 4 blocks the annular groove, thereby cutting off the plastic at the bottom, thereby reducing the situation of material shortage in the product.

[0038] like Figure 2 , Figure 5 , Figure 6 and Fig.10 As shown in the figure, a transverse rod 17 is fixedly connected to the side of the truncation plate 4, one end of the transverse rod 17 passes through the die 1 and extends into the positioning hole 13, the bottom end of the positioning column 12 is an inclined surface, and the end of the transverse rod 17 can slide with the bottom end inclined surface of the positioning column 12, and the transverse rod 17 is circumferentially connected with a boss, and a limiting motion groove that slides with the boss is provided in the die 1, and a return spring 18 is installed in the limiting motion groove, and the two ends of the return spring 18 are respectively against the inner wall of the end of the limiting motion groove and the boss. In actual use, before the mold is closed, the core block 3 is in Figure 1In the state of the truncation plate 4 being completely received in the installation groove, when the punch 2 gradually descends, the positioning column 12 abuts against the top of the lifting column 15, pushing the lifting column 15, the bottom plate 14 and the core block 3 to descend synchronously. During the descent of the core block 3, the plastic is injected into the mold cavity, and the plastic is first filled into the annular groove until the annular groove at the top of the core block 3 descends to the position of the installation groove, and the positioning column 12 descends to the specified position in the positioning hole 13, and the inclined surface at the bottom end of the positioning column 12 abuts against the transverse rod 1 7, the end of the transverse rod 17 and the inclined surface of the bottom end of the positioning column 12 slide together to push the transverse rod 17 to move horizontally, and then the transverse rod 17 pushes the cut-off plate 4 into the finished product groove (i.e., the annular groove), and the cut-off plate 4 blocks the opening of the annular groove, so that the annular groove and the mold cavity are separated, and the bottom corner position (plastic in the annular groove) is cut off, thereby ensuring the quality of the product. Similarly, the return spring 18 can push the transverse rod 17 to slide and reset, driving the cut-off plate 4 to retract into the installation groove.

[0039] like Figure 2 , Figure 5 , Figure 6 and Fig.10 As shown in the figure, the bottom surface of one end of the circular block 5 located in the finished product groove is an inclined surface, and the inclined surface at the bottom of the circular block 5 can slide with the outer periphery of the core block 3. When the core block 3 is raised, it is ensured that the outer periphery of the core block 3 can be against the inclined surface at the bottom of the cutting plate 4 and slide, which can drive the cutting plate 4 to be received into the receiving groove, and then the core block 3 pushes out the waste in the annular groove and the product in the mold cavity, completing demolding and waste removal.

[0040] like Figure 1 , Figure 2 and Figure 6 As shown in the figure, cooling channels 19 connected to the moving cavity are provided on both sides of the die 1; in actual use, cooling water can be injected into the moving cavity through the cooling channel 19, and the cooling water transfers the temperature to the mold and the core block 3, so as to cool and form the plastic in the cavity. At the same time, the cooling water enters the moving cavity, and the cooling water can lift the bottom plate 14, thereby ensuring that the core block 3 is lifted, which facilitates the effect of lifting the product to be demolded and removing waste.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An easy-to-demold injection molding device for a control panel of a household appliance, characterized in that: The die comprises a concave die (1) and a convex die (2), wherein the concave die (1) is provided with a finished product groove, a core block (3) is installed in the finished product groove, an annular groove is provided around the top of the core block (3), an installation groove is provided on the inner wall of the finished product groove, a plurality of cut-off plates (4) are installed in the installation groove, and the plurality of cut-off plates (4) can extend out of the installation groove and be assembled into an annular structure, the annular structure can block the top opening of the annular groove, and the top surface of the cut-off plate (4) is flush with the top surface of the core block (3); A circular block (5) is installed on the bottom surface of the male die (2), and a plurality of material receiving grooves are opened on the bottom surface of the circular block (5). When the circular block (5) is pressed against the top surface of the female die (1), the material receiving groove is communicated with the finished product groove. A material extrusion block (6) is slidably installed in the material receiving groove. The material extrusion block (6) can block the material receiving groove, and the bottom surface of the material extrusion block (6) is flush with the bottom surface of the circular block (5); The cross-section of the extrusion block (6) is trapezoidal, and when the extrusion block (6) abuts against the inner wall of the material receiving trough, the extrusion block (6) blocks the bottom opening of the material receiving trough, and the extrusion block (6) and the inner wall of the material receiving trough form a closed material receiving chamber; The extrusion block (6) is fixedly connected to a slider (7); the inner wall of the material receiving trough is provided with a displacement groove slidably matched with the slider (7); the inner wall of the displacement groove is provided with a telescopic hole; the slider (7) is fixedly connected to a driving rod (8); the driving rod (8) is slidably installed in the telescopic hole; a driving spring (9) is also installed in the telescopic hole; the two ends of the driving spring (9) respectively abut against the inner wall of the end of the telescopic hole and the end of the driving spring (9); the driving spring (9) can drive the extrusion block (6) to slide in the material receiving trough and open the material receiving trough.

2. The easy-to-demold injection molding device for a control panel for household appliances according to claim 1, characterized in that: The bottom of the male mold (2) is provided with a receiving groove capable of receiving the circular block (5), the outer inner wall of the receiving groove being an inclined surface, and when the circular block (5) is retracted in the receiving groove, the side surface of the extrusion block (6) abuts against the outer inner wall of the receiving groove and slides with it, driving the extrusion block (6) to slide in the receiving groove; The male mold (2) is provided with an ejection structure, and the ejection structure is used to eject the circular block (5) out of the receiving groove.

3. The easy-to-demold injection molding device for a control panel for household appliances according to claim 2, characterized in that: The ejection structure comprises a downward moving rod (10) and an ejection spring (11); one end of the downward moving rod (10) is fixedly connected to the top surface of the circular block (5); the top inner wall of the storage groove is provided with a lifting hole that slidably cooperates with the downward moving rod (10); the ejection spring (11) is installed in the lifting hole; and the two ends of the ejection spring (11) are respectively against the top inner wall of the lifting hole and the top of the downward moving rod (10).

4. The easy-to-demold injection molding device for a control panel for household appliances according to claim 1, characterized in that: A plurality of positioning columns (12) are fixedly mounted on the bottom surface of the male mold (2), and positioning holes (13) matching the positioning columns (12) are provided on the top surface of the female mold (1), wherein the number of the positioning holes (13) is the same as the number of the positioning columns (12) and are arranged in a one-to-one correspondence.

5. The easy-to-demold injection molding device for a control panel for household appliances according to claim 4, characterized in that: The bottom of the core block (3) is fixedly connected to a bottom plate (14); a movement cavity is provided in the die (1) and is slidably matched with the bottom plate (14); a lifting column (15) is fixedly connected to the movement cavity; one end of the lifting column (15) passes through the die (1) and extends into the positioning hole (13); the end of the positioning column (12) can abut against the end of the lifting column (15) and push the lifting column (15) to descend in the positioning hole (13); A lifting spring (16) is installed in the movement cavity, and two ends of the lifting spring (16) are respectively connected to the bottom inner wall of the movement cavity and the bottom surface of the bottom plate (14).

6. The easy-to-demold injection molding device for a control panel for household appliances according to claim 1, characterized in that: A transverse rod (17) is fixedly connected to the side of the cut-off plate (4), one end of the transverse rod (17) passes through the die (1) and extends into the positioning hole (13), the bottom end of the positioning column (12) is an inclined surface, the end of the transverse rod (17) can slide with the inclined surface of the bottom end of the positioning column (12), the transverse rod (17) is circumferentially connected with a boss, the die (1) is provided with a limit motion groove that slides with the boss, a return spring (18) is installed in the limit motion groove, and the two ends of the return spring (18) respectively abut against the inner wall of the end of the limit motion groove and the boss.

7. The easy-to-demold injection molding device for a control panel for household appliances according to claim 6, characterized in that: The bottom surface of one end of the circular block (5) located in the finished product groove is an inclined surface, and the inclined surface at the bottom of the circular block (5) can be slidably matched with the outer periphery of the mold core block (3).

8. The easy-to-demold injection molding device for a control panel for household appliances according to claim 5, characterized in that: Both sides of the die (1) are provided with cooling channels (19) communicating with the movement cavity; An injection channel (20) is provided through the top of the male mold (2).

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