Rapid demolding structure for injection molding shell

Abstract

The utility model discloses a quick demolding structure for an injection molding shell, which comprises a base plate, a U-shaped mounting frame is arranged at the upper end of the base plate, a fixed mold block is arranged at the upper end of the base plate, a rectangular groove is formed in the upper end of the fixed mold block, a molding plate is arranged in the rectangular groove through a plurality of mounting plates, and a cavity is formed in the upper end of the molding plate. A movable mold plate is arranged at the upper end of the fixed mold block, a cover plate matched with the forming plate is arranged at the bottom end of the movable mold plate, a feeding port is formed in the upper end of the movable mold plate, the bottom end of the feeding port penetrates through the movable mold plate and the cover plate, a limiting groove is formed in the mold cavity, and an ejector plate matched with the limiting groove is arranged in the limiting groove. The ejection mechanism is reasonable in structure, and the movable position of the abutting plate can be limited through the adjusting block and the threaded rod which are arranged on the two sides of the forming plate, so that the stroke of the ejection plate can be adjusted, an injection molding shell of a household appliance can be ejected out of an injection mold on the premise that the injection molding shell of the household appliance is not damaged, and the demolding practicability of the injection mold is better.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding of injection-molded shells, in particular to a rapid demoulding structure of an injection-molded shell. Background Art

[0002] Injection molding of home appliance shells refers to heating plastic particles to a molten state, injecting the molten plastic into a mold through an injection system, and performing filling, cooling, and solidification processes inside the mold to finally obtain the desired shell product. In the manufacturing process of home appliance products, injection molding shells play an important role. They not only provide product strength and hardness, protect internal parts and ensure product life, but also provide product appearance and feel, and enhance the overall quality of the product.

[0003] Chinese patent announcement number CN214266523U discloses a rapid demoulding device for an injection mold, comprising a first support plate, support columns are fixedly installed on both sides of the first support plate, a second support plate is fixedly installed on the top of the support column, a cylinder is fixedly installed on the top of the second support plate, and the output end of the cylinder runs through the interior of the second support plate. The utility model improves the stability of the support column by setting the first support plate for installing and fixing the support column, improves the stability of the cylinder by setting the support column and the second support plate to cooperate with each other for installing and fixing the cylinder, drives the movable mold to move up and down, and then closes the mold with the fixed mold, and sets the top plate for ejecting the mold, thereby facilitating rapid demoulding, and at the same time solves the problem that the existing injection mold takes a long time to demould, has a slow production speed, affects the company's production efficiency, and cannot meet the use requirements.

[0004] In actual use, the utility model usually utilizes the ejector assembly in the mold to quickly eject the molded home appliance injection molded shell, and the ejector stroke of the ejector assembly in the utility model is usually fixed. When the ejector stroke is insufficient, the workpiece may not be completely ejected from the mold. When the ejector stroke is too large, the workpiece may be deformed or cracked, thereby making the demolding of the injection mold less practical. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a quick demoulding structure for an injection molded shell, so as to improve the practicability of demoulding of the injection mold.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A quick demolding structure for an injection molded shell comprises a base plate, a U-shaped mounting frame is provided at the upper end of the base plate, a fixed module is provided at the upper end of the base plate, a rectangular groove is provided at the upper end of the fixed module, a molding plate is provided in the rectangular groove through a plurality of mounting plates, a cavity is provided at the upper end of the molding plate, a movable template is provided at the upper end of the fixed module, a cover plate matched with the molding plate is provided at the bottom end of the movable template, a feed port is provided at the upper end of the movable template, the bottom end of the feed port passes through the movable template and the cover plate, a limiting groove is provided in the cavity, and a matching ejector plate is provided in the limiting groove.

[0008] Preferably, cylinders are provided on both sides of the upper end of the installation frame, and the output ends of the two cylinders are arranged on the upper end of the movable template.

[0009] Preferably, a limit rod is provided at the bottom end of the ejection plate, the bottom end of the limit rod passes through the limit groove and extends into the rectangular groove, and is provided with a resistance plate, and resistance rods are provided on both sides of the bottom end of the movable template, and the bottom ends of the two resistance rods are both arranged in an arc shape and respectively resist on both sides of the upper end of the resistance plate.

[0010] Preferably, guide grooves are provided on both sides of the rectangular groove, and guide blocks adapted to the guide grooves are provided on one side of the two abutment rods. The two guide blocks are respectively located in the two guide grooves and are slidably connected to the side walls of the guide grooves.

[0011] Preferably, a plurality of limit springs are provided at the bottom end of the ejection plate, and the bottom ends of the plurality of limit springs are all arranged at the bottom end of the limit groove.

[0012] Preferably, adjustment blocks are provided on both sides of the forming plate, threaded holes are penetrated through the two adjustment blocks, and matching threaded rods are penetrated through the two threaded holes.

[0013] Preferably, the bottom ends of the two threaded rods are both arranged in an arc shape and are respectively located on both sides of the upper end of the abutment plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By setting the adjustment blocks and threaded rods on both sides of the molding plate, the position to which the resistance plate can move can be limited, so that the stroke size of the ejector plate can be adjusted, so that it can be ejected from the injection mold without damaging the injection molded shell of the home appliance, making the demoulding of the injection mold more practical.

[0016] 2. By setting the guide grooves on both sides of the rectangular groove and cooperating with the guide blocks on one side of the two abutment rods, the movement position of the module and the cover plate can be limited to prevent their position from shifting during movement, thereby ensuring the quality of the injection molded housing of home appliances produced by the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the main appearance structure of an injection molded shell quick demoulding structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of a quick demoulding structure for an injection-molded housing proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a quick demoulding structure for an injection-molded housing proposed by the utility model;

[0020] Figure 4 The utility model provides a schematic cross-sectional structure diagram of a fixed module of a quick demoulding structure for an injection molded housing.

[0021] In the figure: 1. base plate; 2. mounting frame; 3. fixed module; 4. mounting plate; 5. forming plate; 6. moving template; 7. cover plate; 8. feed port; 9. ejector plate; 10. cylinder; 11. limit rod; 12. resistance plate; 13. resistance rod; 14. guide block; 15. limit spring; 16. adjustment block; 17. threaded rod. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0023] Reference Figure 1-4 A quick demoulding structure for an injection molded shell comprises a base plate 1, a U-shaped mounting frame 2 is arranged on the upper end of the base plate 1, a fixed module 3 is arranged on the upper end of the base plate 1, a rectangular groove is opened on the upper end of the fixed module 3, a molding plate 5 is arranged in the rectangular groove through a plurality of mounting plates 4, a cavity is opened on the upper end of the molding plate 5, a movable template 6 is arranged on the upper end of the fixed module 3, a cover plate 7 matched with the molding plate 5 is arranged on the bottom end of the movable template 6, a feed port 8 is arranged on the upper end of the movable template 6, and the bottom end of the feed port 8 penetrates the movable template 6 and the cover plate 7, so that the molten plastic raw material can be injected into the cavity, a limiting groove is opened in the cavity, and a matching ejector plate 9 is arranged in the limiting groove.

[0024] Specifically, Figure 1 As shown, cylinders 10 are provided on both sides of the upper end of the mounting frame 2. The cylinders 10 are prior art and will not be described in detail here. The output ends of the two cylinders 10 are both provided at the upper end of the movable template 6. The two cylinders 10 can drive the movable template 6 at the bottom end to move up and down.

[0025] Specifically, Figure 2and Figure 3 As shown, a limiting rod 11 is provided at the bottom end of the ejection plate 9, and the bottom end of the limiting rod 11 passes through the limiting groove and extends into the rectangular groove, and is provided with a resistance plate 12. The resistance plate 12 will drive the ejection plate 9 to move up and down through the limiting rod 11, and resistance rods 13 are provided on both sides of the bottom end of the movable template 6. The bottom ends of the two resistance rods 13 are both arranged in an arc shape, and respectively resist on both sides of the upper end of the resistance plate 12, and the two resistance rods 13 will push the resistance plate 12 to move downward.

[0026] Specifically, Figure 2 As shown, guide grooves are provided on both sides of the rectangular groove, and guide blocks 14 adapted to the guide grooves are provided on one side of the two abutment rods 13. The two guide blocks 14 are respectively located in the two guide grooves and are slidably connected to the side walls of the guide grooves. The two guide blocks 14 can limit the moving positions of the two abutment rods 13 and the movable template 6.

[0027] Specifically, Figure 3 As shown, a plurality of limit springs 15 are provided at the bottom of the ejection plate 9, and the bottom ends of the plurality of limit springs 15 are all arranged at the bottom ends of the limit grooves. The plurality of limit springs 15 can drive the ejection plate 9 to move upward to eject the injection molded housing of the home appliance formed in the cavity.

[0028] Specifically, Figure 2 and Figure 3 As shown, adjustment blocks 16 are provided on both sides of the forming plate 5 , threaded holes are penetrated in the two adjustment blocks 16 , and matching threaded rods 17 are penetrated in the two threaded holes. The position of the threaded rods 17 can be adjusted by rotating the threaded rods 17 .

[0029] Specifically, Figure 2 and Figure 3 As shown, the bottom ends of the two threaded rods 17 are both arc-shaped and are respectively located on both sides of the upper end of the contact plate 12, which can limit the moving position of the contact plate 12, thereby adjusting the moving stroke of the ejection plate 9.

[0030] When the utility model is used, firstly, the two threaded rods 17 need to be rotated according to the stroke moved by the ejection plate 9. The two threaded rods 17 will move up and down when they are rotated. After the adjustment is completed, the two cylinders 10 need to be started, which can drive the movable template 6 and the cover plate 7 at the bottom to move downward, close the molding plate 5, and drive the two resistance rods 13 to move downward, push the resistance plate 12 to move downward, and the resistance plate 12 will drive the ejection plate 9 to move downward through the limit rod 11, and then the molten plastic can be injected into the cavity through the feed port 8. After waiting for cooling and molding, the two cylinders 10 can be started to drive the movable template 6 at the bottom to move upward, and the movable template 6 will drive the two resistance rods 13 to move upward. After the two resistance rods 13 move upward, the ejection plate 9 will move downward under the action of multiple limit springs 15 to eject the molded home appliance injection molding shell in the cavity.

[0031] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quick demoulding structure for an injection molded housing, comprising a base plate (1), characterized in that: A U-shaped mounting frame (2) is provided at the upper end of the base plate (1), a fixed module (3) is provided at the upper end of the base plate (1), a rectangular groove is provided at the upper end of the fixed module (3), a forming plate (5) is provided in the rectangular groove through a plurality of mounting plates (4), a mold cavity is provided at the upper end of the forming plate (5), a movable mold plate (6) is provided at the upper end of the fixed module (3), a cover plate (7) matched with the forming plate (5) is provided at the bottom end of the movable mold plate (6), a feed port (8) is provided at the upper end of the movable mold plate (6), the bottom end of the feed port (8) passes through the movable mold plate (6) and the cover plate (7), a limiting groove is provided in the mold cavity, and a matching ejection plate (9) is provided in the limiting groove; Adjustment blocks (16) are provided on both sides of the forming plate (5), threaded holes are passed through the two adjustment blocks (16), and matching threaded rods (17) are passed through the two threaded holes.

2. The rapid demoulding structure for injection molded housing according to claim 1, characterized in that: Cylinders (10) are provided on both sides of the upper end of the installation frame (2), and the output ends of the two cylinders (10) are arranged on the upper end of the movable template (6).

3. The rapid demoulding structure for injection molded housing according to claim 1, characterized in that: The bottom end of the ejection plate (9) is provided with a limiting rod (11), the bottom end of the limiting rod (11) passes through the limiting groove and extends into the rectangular groove, and is provided with a contact plate (12), and both sides of the bottom end of the movable plate (6) are provided with contact rods (13), the bottom ends of the two contact rods (13) are both arranged in an arc shape, and respectively contact the two sides of the upper end of the contact plate (12).

4. The rapid demoulding structure for injection molded housing according to claim 3, characterized in that: Guide grooves are provided on both sides of the rectangular groove, and guide blocks (14) adapted to the guide grooves are provided on one side of the two abutting rods (13). The two guide blocks (14) are respectively located in the two guide grooves and are slidably connected to the side walls of the guide grooves.

5. The rapid demoulding structure for injection molded housing according to claim 1, characterized in that: A plurality of limit springs (15) are provided at the bottom end of the ejection plate (9), and the bottom ends of the plurality of limit springs (15) are all arranged at the bottom end of the limit groove.

6. The rapid demoulding structure for injection molded housing according to claim 1, characterized in that: The bottom ends of the two threaded rods (17) are both arranged in an arc shape and are respectively located on both sides of the upper end of the abutment plate (12).

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