Double-color injection mold for face shell of household appliance

Abstract

The utility model discloses a double-color injection mold for a household appliance face shell, which belongs to the technical field of double-color injection molds and comprises a lower mold and an upper mold, the lower mold is mounted on an injection molding table, the top end of the injection molding table is fixedly connected with an injection molding frame, and the top end of the injection molding frame is bolted with an electric cylinder. The piston end of the electric air cylinder penetrates through the injection molding frame and is fixedly connected with a lifting seat, the bottom end of the lifting seat is fixedly connected with a connecting rod, the bottom end of the connecting rod is fixedly connected with the top end of the upper mold, an injection molding groove is formed in the surface of the lower mold, and a top plate used for assisting household appliance face shell demolding is arranged in an inner cavity of the injection molding groove. An elastic assembly is arranged at the bottom end of the top plate, an injection molding pipe is arranged at the top end of the upper mold, and a supporting assembly is arranged at the bottom end of the upper mold, so that convenience is provided for mold splitting work of the double-color injection mold, the time spent on demolding work of the household appliance face shell is shortened, and the production efficiency of the household appliance face shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a double-color injection mold for a household appliance housing. Background Art

[0002] A two-shot mold is one in which two plastic materials are injected on the same injection molding machine, forming the product in two separate steps, but the product is ejected from the mold only once. This molding process, also known as double-shot molding, is typically completed using a single set of molds and requires a specialized two-shot molding machine. In the production of home appliance front covers, two-shot molds are often used to mold these parts.

[0003] Existing two-color injection molds usually require staff assistance to separate the upper mold and the lower mold after injection molding, which brings inconvenience to the mold separation work of the two-color injection mold. At the same time, after injection molding, the household appliance face shell requires auxiliary operation before it can be demolded from the injection molding groove, resulting in the demolding work of the household appliance taking a long time, reducing the production efficiency of the household appliance face shell.

[0004] According to the announcement number: CN205326172U, a two-shot injection mold is provided. The mold includes a first front mold core, a second front mold core, a back mold core, a back mold insert, and a movable insert. The first front mold core is provided with a plurality of front mold sliders, which are slidably connected to the first front mold core and located outside the back mold insert. During the first shot molding, they slide and converge toward the back mold insert to cooperate with the back mold insert and the first front mold core to form a closed first cavity. The first shot product is molded in the first cavity. The movable insert is annular and slidably sleeved around the back mold insert. During the second shot molding, it slides toward the second front mold core to cooperate with the back mold insert and the second front mold core to form a closed second cavity. The second cavity is larger than the first cavity, so that a gap is formed between the second front mold core and the movable insert and the first shot product. The second shot product is molded within the gap. The utility model can reduce parting lines on the product surface and improve the product appearance. The utility model has a simple and reliable structure.

[0005] According to the two-color injection mold introduced above, usually after injection molding, staff assistance is required to separate the upper mold and the lower mold, which brings inconvenience to the mold separation work of the two-color injection mold. At the same time, after injection molding, the household appliance face shell requires auxiliary operation before it can be demolded from the injection tank, resulting in the demolding work of the household appliance face shell taking more time, reducing the production efficiency of the household appliance face shell. Therefore, we need to propose a two-color injection mold for the household appliance face shell. Utility Model Content

[0006] The purpose of the present utility model is to provide a two-color injection mold for a household appliance face shell, and the electric cylinder is started to drive the lifting seat to move. The lifting seat drives the upper mold to move up and down through the connecting rod at the bottom, so that the upper mold and the lower mold complete the mold closing and mold separation states. Through the cooperation of the top plate and the elastic component, when closing the mold, the upper mold squeezes the top plate through the supporting component, and the top plate squeezes the elastic component. After injection molding, the upper mold drives the supporting component to separate the mold, and the elastic component pushes the top plate to reset so that the household appliance face shell is separated from the inner cavity of the injection groove, thereby providing convenience for the mold separation work of the two-color injection mold, shortening the time required for the demolding work of the household appliance face shell, and improving the production efficiency of the household appliance face shell, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a two-color injection mold for a household appliance face shell, comprising a lower mold and an upper mold, the lower mold being mounted on an injection molding table, the top of the injection molding table being fixedly connected to an injection molding frame, the top of the injection molding frame being bolted to an electric cylinder, the piston end of the electric cylinder passing through the injection molding frame and being fixedly connected to a lifting seat, the bottom end of the lifting seat being fixedly connected to a connecting rod, the bottom end of the connecting rod being fixedly connected to the top end of the upper mold, an injection molding groove for molding a household appliance face shell being provided on the surface of the lower mold, the inner cavity of the injection molding groove being provided with a top plate for assisting in demolding the household appliance face shell, the bottom end of the top plate being provided with an elastic component for assisting in resetting the top plate, the top end of the upper mold being provided with an injection molding tube, and the bottom end of the upper mold being provided with a supporting component for pushing the top plate to move.

[0008] Preferably, the top of the lifting seat is fixedly connected to a movable rod, a through hole is opened on the surface of the injection molding frame, the movable rod is inserted and slid into the inner cavity of the through hole of the injection molding frame, and the top of the movable rod is fixedly connected to a fixed block.

[0009] Preferably, the elastic component includes a sliding rod, which is fixedly connected to the bottom end of the top plate, and the inner cavity of the injection molding groove is provided with a through hole. The sliding rod is inserted and slid in the inner cavity of the through hole of the injection molding groove, and the bottom end of the sliding rod is fixedly connected to a limiting block. The outer surface of the sliding rod is provided with a spring, and the spring is located between the injection molding groove and the top plate.

[0010] Preferably, four groups of sliding rods are provided, and the four groups of sliding rods are symmetrically distributed around the lower surface of the top plate.

[0011] Preferably, the support assembly includes a support seat, the top end of the support seat is fixedly connected to a fixing rod, a through hole is opened on the surface of the upper mold, the fixing rod is inserted and slid in the inner cavity of the through hole of the upper mold, the top end of the fixing rod is fixedly connected to a support block, the bottom end of the support seat is provided with a supporting structure, the upper surface of the support seat is opened, the bottom end of the upper mold is inserted and slid in the inner cavity of the support seat slot.

[0012] Preferably, the support structure includes a sealing plate and a support column, and the sealing plate and the support column are fixedly connected to the bottom end of the support seat. The sealing plate is shaped like a U-shaped rectangle, and the support column is located outside the sealing plate.

[0013] Preferably, a sealing groove adapted to the sealing plate is provided on the upper surface of the top plate, and an anti-sticking coating is provided on the inner side wall of the sealing plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model provides a two-color injection mold for the front shell of household appliances. The electric cylinder is started to drive the lifting seat to move. The lifting seat drives the upper mold to move up and down through the connecting rod at the bottom, so that the upper mold and the lower mold can complete the mold closing and mold separation states, thereby providing convenience for the mold separation work of the two-color injection mold.

[0016] 2. The utility model provides a two-color injection mold for the face shell of household appliances. Through the cooperation of the top plate and the elastic component, when the mold is closed, the upper mold squeezes the top plate through the support component, and the top plate squeezes the elastic component. After injection molding, the upper mold drives the support component to separate the mold, and the elastic component pushes the top plate to reset so that the face shell of the household appliance is separated from the inner cavity of the injection groove, thereby shortening the time required for demolding the face shell of the household appliance and improving the production efficiency of the face shell of the household appliance.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from a side view;

[0020] Figure 3 It is a schematic diagram of the structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the exploded structure of the upper mold and the lower mold of the utility model.

[0022] In the figure: 1. Lower mold; 2. Upper mold; 3. Injection molding table; 4. Injection molding frame; 5. Electric cylinder; 6. Lifting seat; 7. Connecting rod; 8. Injection molding groove; 9. Top plate; 10. Elastic component; 101. Sliding rod; 102. Spring; 11. Injection molding tube; 12. Support component; 121. Support seat; 122. Fixed rod; 123. Support block; 124. Sealing plate; 125. Support column; 13. Movable rod; 14. Fixed block; 15. Sealing groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The utility model provides a technical solution: a two-color injection mold for a household appliance face shell, comprising a lower mold 1 and an upper mold 2. The lower mold 1 is installed on an injection molding table 3. The top of the injection molding table 3 is fixedly connected to an injection molding frame 4. The top of the injection molding frame 4 is bolted to an electric cylinder 5. The piston end of the electric cylinder 5 passes through the injection molding frame 4 and is fixedly connected to a lifting seat 6. The bottom end of the lifting seat 6 is fixedly connected to a connecting rod 7. The bottom end of the connecting rod 7 is fixedly connected to the top of the upper mold 2. An injection groove 8 for molding the face shell of a household appliance is provided on the surface of the lower mold 1. The inner cavity of the injection molding groove 8 is provided with a top plate 9 for assisting the demoulding of the face shell of the household appliance. The bottom end of the top plate 9 is provided with an elastic component 10 for assisting the top plate 9 to reset. An injection tube 11 is provided on the top of the upper mold 2, and a supporting component 12 for pushing the top plate 9 to move is provided at the bottom end of the upper mold 2.

[0025] When parting the mold, start the electric cylinder 5 to drive the lifting seat 6 to move, and the lifting seat 6 drives the upper mold 2 to move through the connecting rod 7 at the bottom, so that the upper mold 2 and the lower mold 1 complete the parting state. When closing the mold, the upper mold 2 squeezes the top plate 9 through the support component 12, and the top plate 9 squeezes the elastic component 10. After injection molding, the upper mold 2 drives the support component 12 to part the mold, and the elastic component 10 pushes the top plate 9 to reset so that the household appliance face shell is separated from the inner cavity of the injection groove 8, thereby providing convenience for the parting work of the two-color injection mold, shortening the time required for the demolding of the household appliance face shell, and improving the production efficiency of the household appliance face shell.

[0026] The top of the lifting seat 6 is fixedly connected with a movable rod 13, and a through hole is opened on the surface of the injection molding frame 4. The movable rod 13 is inserted and slid into the inner cavity of the through hole of the injection molding frame 4, and the top of the movable rod 13 is fixedly connected with a fixed block 14. Through the setting of the movable rod 13, the four sides of the lifting seat 6 are supported, thereby improving the stability of the lifting seat 6 when moving up and down.

[0027] The elastic component 10 includes a slide rod 101, which is fixedly connected to the bottom end of the top plate 9. A through hole is opened in the inner cavity of the injection molding groove 8. The slide rod 101 is inserted and slides in the inner cavity of the through hole of the injection molding groove 8. The bottom end of the slide rod 101 is fixedly connected to a limit block. The outer surface of the slide rod 101 is sleeved with a spring 102. The spring 102 is located between the injection molding groove 8 and the top plate 9. The spring 102 and the slide rod 101 are squeezed by the top plate 9, and the slide rod 101 moves downward. After the injection molding is completed, the spring 102 is released, pushing the top plate 9 to reset, so that the top plate 9 ejects the household appliance shell in the injection molding groove 8 to complete the demolding.

[0028] There are four groups of slide bars 101, which are symmetrically distributed around the lower surface of the top plate 9. Through the setting of the slide bars 101, the four sides of the bottom end of the top plate 9 are supported, thereby improving the stability of the top plate 9 when moving in the injection molding groove 8.

[0029] The support assembly 12 includes a support seat 121, the top of the support seat 121 is fixedly connected to a fixing rod 122, a through hole is provided on the surface of the upper mold 2, the fixing rod 122 is inserted and slid in the inner cavity of the through hole of the upper mold 2, the top of the fixing rod 122 is fixedly connected to a support block 123, the bottom end of the support seat 121 is provided with a support structure, the upper surface of the support seat 121 is provided with a slot, the bottom end of the upper mold 2 is inserted and slid in the inner cavity of the slot of the support seat 121, the bottom end of the upper mold 2 is inserted into the inner cavity of the slot of the support seat 121 and moves downward, so that the support seat 121 drives the supporting structure to move downward, and the top plate 9 is squeezed by the support structure.

[0030] The supporting structure includes a sealing plate 124 and a support column 125. The sealing plate 124 and the support column 125 are both fixedly connected to the bottom end of the support base 121. The sealing plate 124 is shaped like a U-shaped rectangle, and the support column 125 is located outside the sealing plate 124. Through the cooperation between the sealing plate 124 and the support column 125, the injection molded raw materials are isolated in the inner cavity of the sealing plate 124, thereby preventing the support column 125 from affecting the injection-molded household appliance shell.

[0031] A sealing groove 15 is provided on the upper surface of the top plate 9, which is compatible with the sealing plate 124. The inner wall of the sealing plate 124 is provided with an anti-stick coating. The cooperation between the sealing groove 15 and the sealing plate 124 improves the sealing performance of the sealing plate 124 after contact with the top plate 9. The setting of the anti-stick coating can prevent the molded household appliance shell from sticking to the sealing plate 124.

[0032] When in use, the injection molding table 3 is installed on the workbench, and the electric cylinder 5 is started to drive the lifting seat 6 to move. The lifting seat 6 drives the upper mold 2 to move downward through the connecting rod 7 at the bottom, and the upper mold 2 drives the support seat 121 to contact the lower mold 1. The sealing plate 124 at the bottom of the support seat 121 is inserted into the sealing groove 15, and the support column 125 squeezes the top plate 9, so that the top plate 9 moves downward through the slide rod 101 and squeezes the spring 102. Then the upper mold 2 continues to move downward to complete the mold closing, and the injection molding tube 11 is transported through the two-color injection molding machine, and then formed through the injection groove 8. After molding, the electric cylinder 5 is started to drive the upper mold 2 and the support seat 121 to move upward to complete the mold separation. The spring 102 is released to push the top plate 9 to move upward, so that the top plate 9 pushes the household appliance face shell in the injection groove 8 out to complete the demoulding, thereby providing convenience for the mold separation work of the two-color injection mold, shortening the time required for the demoulding of the household appliance face shell, and improving the production efficiency of the household appliance face shell.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-color injection mold for a household appliance housing, comprising a lower mold (1) and an upper mold (2), characterized in that: The lower mold (1) is mounted on an injection molding table (3), the top of the injection molding table (3) is fixedly connected to an injection molding frame (4), the top of the injection molding frame (4) is bolted to an electric cylinder (5), the piston end of the electric cylinder (5) passes through the injection molding frame (4) and is fixedly connected to a lifting seat (6), the bottom end of the lifting seat (6) is fixedly connected to a connecting rod (7), the bottom end of the connecting rod (7) is fixedly connected to the top of the upper mold (2), the surface of the lower mold (1) is provided with an injection molding groove (8) for molding a household appliance face shell, the inner cavity of the injection molding groove (8) is provided with a top plate (9) for assisting the demoulding of the household appliance face shell, the bottom end of the top plate (9) is provided with an elastic component (10) for assisting the top plate (9) to reset, the top end of the upper mold (2) is provided with an injection molding tube (11), and the bottom end of the upper mold (2) is provided with a support component (12) for pushing the top plate (9) to move.

2. The double-color injection mold for the front shell of a household appliance according to claim 1, characterized in that: The top end of the lifting seat (6) is fixedly connected to a movable rod (13), a through hole is provided on the surface of the injection molding frame (4), the movable rod (13) is plugged and slidably engaged with the inner cavity of the through hole of the injection molding frame (4), and the top end of the movable rod (13) is fixedly connected to a fixed block (14).

3. The double-color injection mold for the front shell of a household appliance according to claim 1, characterized in that: The elastic component (10) includes a slide rod (101), the slide rod (101) is fixedly connected to the bottom end of the top plate (9), the inner cavity of the injection molding groove (8) is provided with a through hole, the slide rod (101) and the inner cavity of the through hole of the injection molding groove (8) are plugged and slid, the bottom end of the slide rod (101) is fixedly connected to a limiting block, the outer surface of the slide rod (101) is provided with a spring (102), and the spring (102) is located between the injection molding groove (8) and the top plate (9).

4. The double-color injection mold for the front shell of a household appliance according to claim 3, characterized in that: Four groups of the sliding rods (101) are provided, and the four groups of the sliding rods (101) are symmetrically distributed around the lower surface of the top plate (9).

5. The double-color injection mold for the home appliance housing according to claim 1, characterized in that: The support assembly (12) includes a support seat (121), the top end of the support seat (121) is fixedly connected to a fixing rod (122), a through hole is provided on the surface of the upper mold (2), the fixing rod (122) is plugged and slid into the inner cavity of the through hole of the upper mold (2), the top end of the fixing rod (122) is fixedly connected to a support block (123), the bottom end of the support seat (121) is provided with a support structure, the upper surface of the support seat (121) is provided with a notch, the bottom end of the upper mold (2) is plugged and slid into the inner cavity of the notch of the support seat (121).

6. The double-color injection mold for the home appliance housing according to claim 5, characterized in that: The support structure comprises a sealing plate (124) and a support column (125), wherein the sealing plate (124) and the support column (125) are both fixedly connected to the bottom end of the support seat (121), the sealing plate (124) is shaped like a square, and the support column (125) is located outside the sealing plate (124).

7. The double-color injection mold for a household appliance housing according to claim 6, characterized in that: The upper surface of the top plate (9) is provided with a sealing groove (15) adapted to the sealing plate (124), and the inner side wall of the sealing plate (124) is provided with an anti-sticking coating.

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