Delayed ejection structure of mold

Abstract

The utility model discloses a delayed ejection structure of a mould, which relates to the technical field of moulds and comprises a plate B and a first mould core, a slide block is arranged on the first mould core, a right ejector pin and a first left ejector pin are arranged in the first mould core, the lower part of the right ejector pin is arranged in an upper ejector pin plate, and the lower part of the first left ejector pin is connected with a first delayed insert pin; the device is provided with a delayed ejection structure, the mold is in a mold closing state at the beginning, the ejector pin and the sliding block can be tightly attached to the forming position of a plastic product, the mold is opened after the cavity position of the mold is filled with plastic and the mold is cooled, the sliding block moves horizontally and stops moving after reaching a certain position, and then an upper ejector pin plate and a lower ejector pin plate of the mold move vertically. When a plastic product is ejected out, the right ejector pin is driven to move upwards, the first left ejector pin and the first delay insert pin are kept still due to counter-acting force, and the first left ejector pin and the first delay insert pin can vertically move along with the upper ejector pin plate and the lower ejector pin plate until the movement gap of the delay insert pin at the lower ejector pin plate is zero, and finally the plastic product is ejected out.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold delayed ejection structure. Background Art

[0002] In the power connector industry, with the advancement of technology, the requirements for terminal plastic products are getting higher and higher. In order to achieve the requirements of no ejector marks on the product appearance and no burrs on the assembly position, it is necessary to turn on the delayed ejection to achieve the requirements of no ejector marks and no burrs. The existing devices still have some defects; for example;

[0003] For example, the delayed ejection structure of the mold with the publication number CN203236675U, when its technology is used, when the mold is closed, the top of the top segment of the thin ejector is at the deep bone position of the product. The distance between the bottom of the delayed ejector and the bottom of the limiting cavity is S. The distance between the ejector panel and the moving template is H. The delayed ejector presses against the thin ejector to prevent excess glue in the thin bone position of the product. During ejection, the ejector panel and the ejector bottom plate move upward a distance S, and the product is ejected S distance, and the thin ejector moves downward relatively to achieve the purpose of protection. The ejector plate continues to move upward until the product is completely ejected;

[0004] The above device has some problems. The device has a complex structure and is cumbersome to use. In addition, the ejection effect of the product is poor when the mold is ejected. During the ejection process, the product may be cracked or marked by the ejector pin.

[0005] Therefore, we proposed a mold delayed ejection structure to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a delayed ejection structure for a mold, so as to solve the problems of poor delayed ejection effect and poor protection effect during ejection of the delayed ejection structure for molds in the current market proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a delayed ejection structure of a mold, comprising a B plate and a first mold core;

[0008] A slider is provided on the first mold core, and a right ejector pin and a first left ejector pin are provided inside the first mold core, and the lower part of the right ejector pin is provided in the upper ejector pin plate, the lower part of the first left ejector pin is connected to the first delay inserting pin, and the first delay inserting pin is provided inside the lower ejector pin plate, and the bottom of the first delay inserting pin is connected to the bottom plate, and a mold core forming surface is provided on the first mold core.

[0009] As a preferred technical solution of the utility model, the right ejector is located directly below the slider, and the right ejector ejects the plastic product from the first mold core and the B plate after the plastic product is formed.

[0010] As a preferred technical solution of the utility model, the right ejector is fixed between the upper ejector plate and the lower ejector plate, and the right ejector moves with the upper ejector plate and the lower ejector plate.

[0011] As a preferred technical solution of the utility model, the two ends of the right ejector are respectively provided with a first ejector upper end and an ejector lower end, and a left ejector lower end is provided below the first left ejector.

[0012] As a preferred technical solution of the utility model, the lower part of the first delay pin is connected to the bottom plate through the lower end of the delay pin, and the upper end of the delay pin is arranged above the first delay pin, and a delay pin movable gap is arranged between the upper end of the delay pin and the first left ejector pin.

[0013] As a preferred technical solution of the utility model, the middle distance of the delayed pin-setting movable gap is consistent with the distance between the upper end of the right ejector and the plastic product.

[0014] As a preferred technical solution of the utility model, the first mold core is symmetrically arranged about the center of the B plate, and a right ejector pin and a first left ejector pin are arranged in the first mold core, and the shape of the slider is L-shaped.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The device is provided with a delayed ejection structure. When the mold starts to injection mold the plastic product, the mold is in a mold-closing state. At this time, the ejector pin and the slider will be close to the molding position of the plastic product. When the plastic fills the mold cavity and cools down, the mold will be opened. At this time, the slider will move horizontally away from the plastic product and stop moving after reaching a certain position. Then, the upper and lower ejector plates of the mold will move vertically, driving the right ejector pin 4 to start moving upward. Due to the reaction force, the first left ejector pin and the first delayed insert pin will remain motionless until the active gap of the delayed insert pin at the lower ejector plate 6 is zero. Only then will the first left ejector pin and the first delayed insert pin move vertically with the upper and lower ejector plates, and finally eject the plastic product.

[0017] 2. The device is provided with a protective structure, which can prevent certain parts of the injection molded product from being cracked and marked by ejectors during the ejection process by delaying the ejector assembly, thereby ensuring the injection molding yield and appearance requirements, and reducing the processing requirements for sliding between the ejector assembly and the first molding mold core, thereby reducing the processing cost and the qualified rate of the product, and there is an ejection gap between the delayed ejector assembly and the upper ejector plate, and the delayed ejector assembly is pressed on the upper ejector plate after a certain distance by sliding the delayed ejector assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the delayed ejection structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the slider of the utility model.

[0023] In the figure: 1, plate B; 2, first mold core; 201, mold core molding surface; 3, slider; 301, plastic product; 4, right ejector; 401, upper end of ejector; 402, lower end of first ejector; 5, upper ejector plate; 6, lower ejector plate; 7, bottom plate; 8, first left ejector; 801, lower end of left ejector; 9, first delayed inserting pin; 901, lower end of delayed inserting pin; 902, movable gap of delayed inserting pin; 903, upper end of delayed inserting pin. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-5 The utility model provides a technical solution: a delayed ejection structure of a mold, comprising a B plate 1 and a first mold core 2, the first mold core 2 is symmetrically arranged about the center of the B plate 1, and a right ejector 4 and a first left ejector 8 are arranged in the first mold core 2, the slider 3 is L-shaped, the first mold core 2 is provided with a slider 3, and the first mold core 2 is provided with a right ejector 4 and a first left ejector 8, and the lower part of the right ejector 4 is arranged in an upper ejector plate 5, the right ejector 4 is fixed between the upper ejector plate 5 and the lower ejector plate 6, the right ejector 4 moves with the upper ejector plate 5 and the lower ejector plate 6, the right ejector 4 is located directly below the slider 3, and the right ejector 4 ejects the plastic product 301 in the first mold core 2 and the B plate 1 after the plastic product 301 is formed, the two ends of the right ejector 4 are respectively provided with an ejector upper end 401 and a first ejector lower end 402, the lower part of the first left ejector 8 is provided with a left ejector lower end 801, and the lower part of the first left ejector 8 is connected with a first delayed insert pin 9;

[0026] First, when the mold starts to injection mold the plastic product 301, the mold is in a closed state. At this time, the ejector pin and the slider 3 will be closely attached to the molding position of the plastic product 301. When the plastic fills the mold cavity and cools down, the mold will be opened. At this time, the slider 3 will move horizontally away from the plastic product 301 and stop moving after reaching a certain position. Then, the upper and lower ejector plates 6 of the mold will move vertically, driving the right ejector pin 4 to start moving upward. Due to the reaction force, the first left ejector pin 8 and the first delay insert pin 9 will remain stationary.

[0027] The first delay pin 9 is connected to the bottom plate 7 via the delay pin lower end 901, and the first delay pin 9 is provided with a delay pin upper end 903, and a delay pin activity gap 902 is provided between the delay pin upper end 903 and the first left ejector 8, and the first delay pin 9 is provided inside the lower ejector plate 6, the middle distance of the delay pin activity gap 902 is consistent with the distance between the ejector upper end 401 of the right ejector 4 and the plastic product 301, and the bottom of the first delay pin 9 is connected to the bottom plate 7, and the first mold core 2 is provided with a mold core molding surface 201;

[0028] Until the delayed pin-inserting active gap 902 at the lower ejector plate 6 is zero, the first left ejector 8 and the first delayed pin 9 will move vertically with the upper and lower ejector plates 6, and finally eject the plastic product 301. The position of the plastic product 301 corresponding to the upper end 401 of the ejector will not leave ejection marks or deformation and other undesirable features. When used, the device can prevent certain parts of the injection molded product from being cracked and ejector marks during the ejection process, thereby ensuring the injection molding yield and appearance requirements, and reducing the processing requirements for sliding between the ejector component and the first molding mold core 2, thereby reducing the processing cost and the product qualification rate.

[0029] Working principle: When using the delayed ejection structure of the mold, first when the mold starts to injection mold the plastic product 301, the mold is in a closed state. At this time, the ejector pin and the slider 3 will be close to the molding position of the plastic product 301. When the plastic fills the mold cavity and cools down, the mold will be opened. At this time, the slider 3 will move horizontally away from the plastic product 301 and stop moving after reaching a certain position. Then, the upper and lower ejector plates 6 of the mold will move vertically, driving the right ejector pin 4 to start moving upward. Due to the reaction force, the first left ejector pin 8 and the first delayed insert pin 9 will remain motionless until the lower ejector plate When the active gap 902 of the delayed inserting pin at 6 is zero, the first left ejector pin 8 and the first delayed inserting pin 9 will move vertically with the upper and lower ejector pin plates 6, and finally eject the plastic product 301. The position of the plastic product 301 corresponding to the upper end 401 of the ejector pin will not leave many undesirable features such as ejection marks or deformation. When used, the device can prevent certain parts of the injection molded product from being cracked and ejector-marked during the ejection process, thereby ensuring the injection molding yield and appearance requirements, and reducing the processing requirements for sliding between the ejector component and the first molding mold core 2, thereby reducing the processing cost and the product qualification rate.

[0030] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A delayed ejection structure of a mold, comprising a B plate (1) and a first mold core (2); Features: The first mold core (2) is provided with a slider (3), and a right ejector pin (4) and a first left ejector pin (8) are provided inside the first mold core (2), and the lower part of the right ejector pin (4) is provided in the upper ejector pin plate (5), the lower part of the first left ejector pin (8) is connected to the first delay insert pin (9), and the first delay insert pin (9) is provided inside the lower ejector pin plate (6), and the bottom of the first delay insert pin (9) is connected to the bottom plate (7), and the first mold core (2) is provided with a mold core molding surface (201).

2. The delayed ejection structure of the mold according to claim 1, characterized in that: The right ejector pin (4) is located directly below the slider (3), and after the plastic product (301) is formed, the right ejector pin (4) ejects the plastic product (301) from the first mold core (2) and the B plate (1).

3. The delayed ejection structure of the mold according to claim 1, characterized in that: The right ejector pin (4) is fixed between an upper ejector pin plate (5) and a lower ejector pin plate (6), and the right ejector pin (4) moves together with the upper ejector pin plate (5) and the lower ejector pin plate (6).

4. The delayed mold ejection structure according to claim 1, characterized in that: The two ends of the right ejector pin (4) are respectively provided with an ejector pin upper end (401) and a first ejector pin lower end (402), and a left ejector pin lower end (801) is provided below the first left ejector pin (8).

5. The delayed ejection structure of the mold according to claim 1, characterized in that: The first delay pin (9) is connected to the bottom plate (7) via the delay pin lower end (901), and a delay pin upper end (903) is provided above the first delay pin (9), and a delay pin movable gap (902) is provided between the delay pin upper end (903) and the first left top pin (8).

6. The delayed ejection structure of the mold according to claim 5, characterized in that: The middle distance of the delayed pin-setting active gap (902) is consistent with the distance between the top end (401) of the right pin (4) and the plastic product (301).

7. The delayed mold ejection structure according to claim 1, characterized in that: The first mold core (2) is symmetrically arranged about the center of the B plate (1), and a right ejector pin (4) and a first left ejector pin (8) are arranged in the first mold core (2), and the sliding block (3) is L-shaped.

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