CN209888065U

CN209888065U - Double-colored injection mould slider mechanism of loosing core in proper order

Info

Publication number: CN209888065U
Application number: CN201920340533.2U
Authority: CN
Inventors: 岳猛; 曾宪红; 谭伟
Original assignee: Changzhou Haizhuo Precision Mould Co Ltd
Current assignee: Changzhou Haizhuo Precision Mould Co Ltd
Priority date: 2019-03-18
Filing date: 2019-03-18
Publication date: 2020-01-03
Anticipated expiration: 2029-03-18

Abstract

The utility model discloses a mechanism of loosing core in proper order of double-colored injection mould slider belongs to the mold design field. The utility model discloses a mechanism of loosing core in proper order of double-colored injection mould slider, including locating the slider on the movable mould, locate shovel base one on the injection mould cover half and locate shovel base two on the two injection mould cover halves, the slider passes through slider T piece and installs on the movable mould, installs the ripples pearl screw that is used for spacing slider on the slider T piece, and the top of slider is equipped with one "V" shape groove, "V" shape groove have with shovel base an inclined plane agree with the first tight face of tight fit and with shovel base two inclined planes agree with the second tight face of tight fit. The utility model realizes the sequential core-pulling action of the slide block by utilizing the matching of the first shovel base, the second shovel base and the V-shaped groove at the top of the slide block, and prevents the slide block from loosening by utilizing the wave ball screw after the first injection mold opening, thereby ensuring that the position of the slide block is unchanged after the first injection mold opening, withdrawing the slide block when the second injection mold closing, and facilitating the product taking out after the second injection mold opening; the sliding block positioning device has the advantages of simple and compact structure, accurate positioning of the sliding block and the like.

Description

Double-colored injection mould slider mechanism of loosing core in proper order

Technical Field

The utility model relates to a mold design structure, more specifically say, relate to a mechanism of loosing core in proper order of double-colored injection mould slider.

Background

The double-color injection molding refers to a molding process that two different materials are injected into the same set of mold, so that the injection molded part is formed by the two materials. Some two materials are different in color, and some materials are different in hardness, so that the attractiveness, assembly and other performances of the product are improved. Double-color injection molding is widely applied to almost all plastic fields of electronic products, electric tools, medical products, household appliances, toys and the like, and the manufacturing and the forming of a double-color injection mold and the research and development of a double-color multi-color injection molding machine and double-color injection molding raw materials are rapidly developed.

Double-colored injection mold divide into once injecting and secondary injection, can divide into according to structural classification: core rotation, core retraction, and push plate rotation, among others. Double-colored injection mold comprises two cover half and a movable mould usually, two cover half respectively with the movable mould cooperation, accomplish double-colored injection molding, to some double-colored plastic products that have side opening or undercut, need design the structure of loosing core, conventional double-colored mould slider structure is all stirred the slider by the oblique guide pillar and is come the motion, the slider all can move when the mould is opened and shut with the injection of second time every time to the first injection, lead to like this that the slider withdraws from and can not play the effect of pushing down the product when the mould is opened to the first completion of penetrating, cause a product of penetrating to probably glue on the cover half. Therefore, in order to keep the core pulling slider stationary, a structure for preventing the core pulling member from moving needs to be designed to meet the requirements of the two-color injection mold.

In order to solve the problems, the Chinese patent number ZL201620201079.9, the granted announcement date is 2016, 9 and 14, and the invention is named as follows: the patent application of rotatory double-colored damage prevention mould structure provides a mechanism that prevents piece of loosing core and removes, and it includes first mould frame, first mould courage, first oblique briquetting, second mould frame, second mould courage, second oblique briquetting, slider, movable mould frame, movable mould courage, bullet piece spring. The first fixed mold liner and the second fixed mold liner can be matched with the movable mold liner respectively to complete double-color injection molding. Because the first inclined pressing block, the second inclined pressing block, the sliding block, the elastic block and the like are arranged, the first inclined pressing block and the second inclined pressing block which are arranged on the first fixed die frame and the second fixed die frame can be respectively abutted against the sliding block, the sliding block is guaranteed to be fixed and fixed when the second color is injected, the elastic block is utilized to pull the sliding block out of the cavity when the second color is injected, and the loose core piece can be effectively prevented from moving. The sliding block does not move when the first-color injection is carried out for mold opening, so that the problem that the first-shot product is stuck on the fixed mold is solved, but the problem that the sliding block loses the compression of the inclined pressing block after the first-color injection is carried out for mold opening, and the possibility that the core-pulling sliding block is loosened due to gravity and the like in the rotating process of the movable mold is easily found, so that the product can be damaged during secondary injection mold closing, and the product is easily damaged and scrapped; and, the bullet piece that has the T-shaped piece of needs design comes to cooperate with second inclined pressing piece and slider respectively, and structural design is comparatively complicated, and is higher to the cooperation precision requirement of part, has increased the part preparation degree of difficulty and the mould dismouting degree of difficulty.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects that the existing core pulling structure of the double-color injection mould sliding block has the defects that the sliding block is easy to loosen, the product is damaged, the structural design is complex and the like, and provide a sequential core pulling mechanism of the double-color injection mould sliding block, the technical scheme of the utility model is adopted, the sequential core pulling action of the sliding block is realized by matching a first shovel base on a fixed die of a shooting mould and a second shovel base on a fixed die of a second shooting mould with a V-shaped groove at the top of the sliding block, and the sliding block is prevented from loosening by using a wave bead screw after the first shooting mould opening, so that the position of the sliding block is unchanged after the first shooting mould opening is ensured, the product is compressed, the problem that the first shooting product is stuck on the fixed die is solved, the sliding block is withdrawn when the second; the sliding block positioning device has the advantages of simple and compact structure, accurate positioning of the sliding block, no looseness and the like.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a double-colored injection mould slider mechanism of loosing core in proper order, including locating the slider on the movable mould, locating the shovel base one on the cover half of a jet mould and locating the shovel base two on the cover half of a jet mould, the slider install on the movable mould through slider T piece, the slider T piece on install the ripples pearl screw that is used for spacing the slider, the top of slider be equipped with a "V" shape groove, this "V" shape groove have with shovel base an inclined plane first agree with tight fit closely and with shovel base two inclined plane agree with tight fit closely the second agree with tight face;

when the injection mold is closed, the first shovel base is in tight fit with the first wedging surface of the sliding block, so that the sliding block extends into the mold cavity; after the mold is opened by injection, the wave ball screw is matched with the sliding block to prevent the sliding block from loosening; when the second injection mold is closed, the second shovel base is matched with the second wedging surface of the sliding block to pull the sliding block to withdraw from the mold cavity.

Furthermore, the die further comprises a limiting block positioned at the rear part of the sliding block, wherein the limiting block is arranged on the movable die or the fixed die of the two-injection die and is used for limiting the retreating position of the sliding block when the two-injection die is closed.

Furthermore, two wave ball screws are arranged on the sliding block T block.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a double-colored injection mould slider mechanism of loosing core in proper order, it is including locating the slider on the movable mould, locating the shovel base one on the cover half of a shooting mould and locating the shovel base two on the cover half of a shooting mould, the slider is installed on the movable mould through slider T piece, install the ripples pearl screw that is used for spacing slider on the slider T piece, the top of slider is equipped with a "V" shape groove, this "V" shape groove has the first tie-up face with a shovel base inclined plane agrees with the tight fit and the second tie-up face with shovel base inclined plane agrees with the tight fit; the sequential core pulling action of the slide block is realized by matching the shovel base I on the fixed die of the first-injection die and the shovel base II on the fixed die of the second-injection die with the V-shaped groove at the top of the slide block, and the slide block is prevented from loosening by using a wave ball screw after the first-injection die is opened, so that the position of the slide block is unchanged after the first-injection die is opened, the product is pressed, the problem that the first-injection product is stuck on the fixed die is solved, the slide block is withdrawn during the second-injection die closing, and the product is conveniently taken out after the second-injection die is; the structure is simple and compact, and the slide block is positioned accurately and is not loosened;

(2) the utility model discloses a double-colored injection mould slider mechanism of loosing core in proper order, it still includes a stopper that is located the slider rear portion, utilizes the stopper to realize two spacing of retreating the position to the slider when penetrating the compound die, has avoided the interior roll-off of slider driven mould.

Drawings

FIG. 1 is a schematic view of a sequential core-pulling mechanism of a two-color injection mold slider according to the present invention;

fig. 2 is a schematic diagram of a two-shot state structure of a sequential core-pulling mechanism of a two-color injection mold slider of the present invention.

The reference numerals in the schematic drawings illustrate:

1. producing a product; 2. a first shovel base; 3. a slider; 4. a slider T block; 5. a ball screw; 6. a second shovel base; 7. and a limiting block.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Examples

Referring to fig. 1 and 2, the sequential core-pulling mechanism for the double-color injection mold sliding block of the embodiment includes a sliding block 3 arranged on a movable mold, a first shovel base 2 arranged on a fixed mold of a first injection mold and a second shovel base 6 arranged on a fixed mold of a second injection mold, the movable mold can perform position switching between the fixed mold of the first injection mold and the fixed mold of the second injection mold through rotary motion, and after the first injection mold is closed and injected, the mold is opened and rotated for a certain angle to switch to the position of the second injection mold for mold closing and injection again, so that the double-color injection molding process is completed. In this embodiment, slider 3 installs on the movable mould through slider T piece 4, and slider 3 can be 4 steady slips relatively to slider T piece, installs the ripples pearl screw 5 that is used for spacing slider 3 on slider T piece 4, is equipped with the recess with ripples pearl screw 5 matched with on slider 3, and slider 3's top is equipped with one "V" shape groove, and this "V" shape groove has the first face of agreeing with the tight fit with 2 inclined planes of shovel base and the second face of agreeing with the tight fit with 6 inclined planes of shovel base. When an injection mold is closed, the shovel base I2 is in press fit with the first wedging surface of the slide block 3, so that the slide block 3 extends into a mold cavity (as shown in figure 1); after the mold is opened by one-shot molding, the wave ball screw 5 is matched with the sliding block 3 to prevent the sliding block 3 from loosening, namely the wave ball screw 5 is clamped in the groove of the sliding block 3 at the moment, so that the problem that the sliding block 3 loosens after the wedging action of the shovel base I2 is lost is effectively prevented, and the problem that the product 1 is damaged by secondary injection molding is avoided; when the second injection die is closed, the second shovel base 6 is matched with the second wedging surface of the sliding block 3 to pull the sliding block 3 to withdraw from the die cavity, namely, the position of the second shovel base 6 is arranged backwards relative to the sliding block 3, the sliding block 3 is pulled to retreat through the inclined surface action when the second shovel base 6 is pressed downwards, and the product 1 is convenient to take out after the second injection die is opened.

In addition, as shown in fig. 2, in this embodiment, the slide block further includes a limit block 7 located at the rear portion of the slide block 3, the limit block 7 is installed on the movable mold or the fixed mold of the two-shot mold, and is used for limiting the retreating position of the slide block 3 when the two-shot mold is closed, and the limit block 7 is used for limiting the retreating position of the slide block 3 when the two-shot mold is closed, so that the slide block 3 is prevented from sliding out of the movable mold. Preferably, wave pearl screw 5 is equipped with two on slider T piece 4, and is more stable to slider 3's location effect, has effectively prevented that slider 3 from appearing becoming flexible after penetrating the die sinking.

In order to understand the technical scheme of the utility model better, now combine fig. 1 and fig. 2 to explain the utility model discloses a two-color injection mould slider mechanism of loosing core in proper order's theory of operation.

As shown in fig. 1, when the double-color injection mold is injection-molded, the shovel base I2 clamps the slide block 3 through the first clamping surface, so that the slide block 3 enters a mold cavity, and the top of the wave ball screw 5 is embedded into a groove at the bottom of the slide block 3; after injection molding of the injection cavity is completed, the fixed mold and the movable mold are opened, and at the moment, the first shovel base 2 is separated from the wedging surface of the sliding block 3; then the movable mould rotates a certain angle, for example 180 degrees, and the movable mould reaches the position of secondary injection, and in the rotating process of the movable mould, the sliding block 3 is prevented from loosening due to the self gravity and other reasons due to the limiting effect of the wave ball screw 5. As shown in fig. 2, when the movable mold closes the mold when reaching the second injection molding position, the second shovel base 6 pulls the slide block 3 backwards through the second wedging surface, so that the slide block 3 retreats backwards and stops retreating when retreating to contact with the limiting block 7, at this time, the slide block 3 is separated from the product 1, after the second injection molding is completed, the fixed mold movable mold is opened, and the ejector plate ejects the product and can be taken out.

The utility model discloses a double-colored injection mould slider mechanism of loosing core in proper order utilizes the shovel base one on the first shooting mould cover half and the shovel base two on the second shooting mould cover half to cooperate with the "V" groove at slider top to realize the action of loosing core in proper order of slider to utilize the ripples pearl screw to prevent the slider not hard up after the first shooting mould sinking, guaranteed that the slider position is unchangeable after the first shooting mould sinking, play the effect of compressing tightly to the product, solved the problem that the first shooting product glues on the cover half, and withdraw from the slider when the second shooting mould sinking, the product of being convenient for take out after the second shooting mould sinking; the sliding block positioning device has the advantages of simple and compact structure, accurate positioning of the sliding block, no looseness and the like.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims

1. The utility model provides a double-colored injection mould slider mechanism of loosing core in proper order, includes slider (3) of locating on the movable mould, locates shovel base (2) on an injection mould cover half and locates shovel base two (6) on two injection mould cover halves, its characterized in that: the sliding block (3) is arranged on the movable die through a sliding block T block (4), a wave ball screw (5) used for limiting the sliding block (3) is arranged on the sliding block T block (4), a V-shaped groove is arranged at the top of the sliding block (3), and the V-shaped groove is provided with a first wedge surface which is in tight fit with the inclined surface of the shovel base I (2) and a second wedge surface which is in tight fit with the inclined surface of the shovel base II (6);

when the injection mold is closed, the shovel base I (2) is in press fit with the first wedging surface of the sliding block (3), so that the sliding block (3) extends into the mold cavity; after the injection mold is opened, the wave ball screw (5) is matched with the sliding block (3) to prevent the sliding block (3) from loosening; when the second injection mold is closed, the second shovel base (6) is matched with the second wedging surface of the sliding block (3) to pull the sliding block (3) to withdraw from the mold cavity.

2. The sequential core-pulling mechanism of a bi-color injection mold slide block of claim 1, wherein: the die is characterized by further comprising a limiting block (7) located at the rear part of the sliding block (3), wherein the limiting block (7) is installed on the movable die or the fixed die of the two-injection die and used for limiting the retreating position of the sliding block (3) during the two-injection die assembly.

3. The sequential core-pulling mechanism of a bi-color injection mold slide block of claim 2, wherein: two wave ball screws (5) are arranged on the sliding block T block (4).