CN211891817U

CN211891817U - Injection mold with secondary ejection mechanism

Info

Publication number: CN211891817U
Application number: CN201922476435.4U
Authority: CN
Inventors: 董正科; 易申兵
Original assignee: Wuhan Huashengyuan Mould Co ltd
Current assignee: Wuhan Huashengyuan Mould Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-10
Anticipated expiration: 2029-12-31

Abstract

The utility model belongs to the technical field of the mould, concretely relates to injection mould with secondary ejection mechanism, including secondary ejection mechanism, department's section of thick bamboo needle and bottom plate, thimble board, backup pad and back template that set gradually from bottom to top; the secondary ejection mechanism comprises a push block, a stop block deflector rod and a movable stop block, and the lower end of the push block is fixed on the ejector plate; the lower end of the stop dog deflector rod is fixed on the supporting plate, and the upper end of the stop dog deflector rod is provided with a sliding groove with an opening facing the rear template; the rear template is provided with a limiting groove with an opening facing the stop dog driving lever, the movable stop dog is arranged in the limiting groove through an elastic assembly, and the elastic assembly can drive the movable stop dog to partially extend out of the limiting groove; the ejector sleeve is sleeved on the ejector sleeve needle, the lower end of the ejector sleeve is fixed with the ejector plate, and the lower end of the ejector sleeve needle is fixed with the bottom plate. The utility model discloses a secondary ejection mechanism makes department's section of thick bamboo needle break away from the product glue position through ejecting for the first time earlier, has the deformation space in the well kenozooecium of product, then makes the product demoulding through ejecting for the second time.

Description

Injection mold with secondary ejection mechanism

Technical Field

The utility model belongs to the technical field of the mould, concretely relates to injection mold with secondary ejection mechanism.

Background

With the rapid development of mechanization and industrialization, the die is widely applied to production workshops, and due to the convenience and the high efficiency of the die, the production efficiency is greatly improved, so the development of the die is more accurate and efficient.

When a workpiece is designed, the specific structure of the workpiece is determined according to the purpose of the workpiece, and as the purpose of some workpieces needs to be designed to be that the surface of the workpiece has a column position, the outer ring of the column-shaped part is provided with a circle of inverted buckles, the middle of the column-shaped part is hollow, a mold is used as an insert pin during molding, and the buckling position cannot be directly deformed inwards for demolding.

Disclosure of Invention

In order to overcome the not enough of above-mentioned prior art existence, the utility model aims at providing an injection mold with secondary ejection mechanism adopts secondary ejection mechanism, makes the department's section of thick bamboo needle break away from the product glue position through ejecting for the first time earlier, has the deformation space in the well kenozooecium of product, then makes the product demoulding through ejecting for the second time.

In order to achieve the purpose, the technical scheme of the utility model is an injection mold with a secondary ejection mechanism, which comprises the secondary ejection mechanism, a cylinder ejecting needle, a bottom plate, an ejector plate, a support plate and a rear template which are arranged from bottom to top in sequence; the secondary ejection mechanism comprises a push block, a stop block deflector rod and a movable stop block, and the lower end of the push block is fixed on the ejector plate; the lower end of the stop dog deflector rod is fixed on the supporting plate, and the upper end of the stop dog deflector rod is provided with a sliding groove with an opening facing the rear template; the rear template is provided with a limiting groove with an opening facing the stopper driving lever, the movable stopper is arranged in the limiting groove through an elastic assembly, the elastic assembly can drive the part of the movable stopper to extend out of the limiting groove, and the movable stopper extending out of the limiting groove extends into the sliding groove and is positioned on the push block; the sliding groove can drive the movable stopper extending out of the limiting groove to retract into the limiting groove; the ejector sleeve is sleeved on the ejector sleeve needle, the lower end of the ejector sleeve is fixed to the ejector plate, and the lower end of the ejector sleeve needle is fixed to the bottom plate.

Furthermore, the upper surface of the rear template is provided with a mounting groove, a rear mold core is arranged in the mounting groove, a cylindrical groove matched with a cylindrical part on a product is formed in the rear mold core, and the ejector pin extends into the cylindrical groove from the bottom surface of the cylindrical groove.

Furthermore, the cylindrical grooves, the cylindrical pieces and the ejector pins are in one-to-one correspondence.

Furthermore, the height of the ejector pin extending to the position above the bottom surface of the cylindrical groove is consistent with the depth of the hollow part of the cylindrical part on the product.

Furthermore, the push block and the stop block deflector rod are arranged in parallel, and both sides of the push block are provided with the stop block deflector rods; when the movable stop block extends into the sliding groove, the bottom surface of the movable stop block is positioned on the push block, and two ends of the movable stop block are respectively positioned in the sliding grooves on the stop block driving levers on two sides of the push block.

Furthermore, the upper side surface of the sliding groove is obliquely inclined upwards from the bottom surface of the sliding groove, and the upper part of the movable stopper facing one side of the sliding groove is provided with an inclined surface matched with the upper side surface of the sliding groove.

Furthermore, the lower side surface of the sliding groove is matched with the bottom surface of one side, facing the sliding groove, of the movable stop block.

Furthermore, the elastic component is a spring, one end of the spring is connected with the groove bottom of the limiting groove, and the other end of the spring is connected with one side, away from the stopper driving lever, of the movable stopper.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an injection mold adopts secondary ejection mechanism, makes the department's section of thick bamboo needle break away from the product glue position through ejecting for the first time earlier, has the deformation space in the well kenozooecium of product, then through ejecting messenger's product demoulding of the second time, the outer lane of having solved current product surface column piece has detains the position and middle mould when being hollow and is done to inlay the needle, detain the unable problem of the inside drawing of patterns of warping of position directly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of one side of a product of the present invention;

FIG. 2 is a schematic view of another aspect of the product of the present invention;

FIG. 3 is a cross-sectional view of a cylindrical member of the surface of a product of the present invention;

fig. 4 is a schematic structural diagram of an injection mold with a secondary ejection mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a secondary ejection mechanism provided in an embodiment of the present invention;

fig. 6 is a top view of an injection mold with a secondary ejection mechanism according to an embodiment of the present invention;

FIG. 7 is a view A-A of FIG. 6;

fig. 8 is a schematic view of a ejector pin during the first ejection of the secondary ejection mechanism provided in the embodiment of the present invention;

in the figure: 1. the ejector mechanism comprises a bottom plate, 2, an ejector plate, 3, a supporting plate, 4, a rear template, 5, a rear mold core, 6, a ejector sleeve, 7, an ejector sleeve needle, 8, a pushing block, 9, a stop block deflector rod, 10, a movable stop block, 11, a spring, 12, a product, 13, a cylindrical part, 14 and a hollow part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 4-8, an embodiment of the present invention provides an injection mold with a secondary ejection mechanism, which includes a secondary ejection mechanism, an ejector 6, an ejector pin 7, and a bottom plate 1, an ejector plate 2, a supporting plate 3, and a rear mold plate 4, which are sequentially arranged from bottom to top; the secondary ejection mechanism comprises a push block 8, a stop dog deflector rod 9 and a movable stop dog 10, and the lower end of the push block 8 is fixed on the ejector plate 2; the lower end of the stopper deflector rod 9 is fixed on the support plate 3, and the upper end of the stopper deflector rod is provided with a sliding groove with an opening facing the rear template 4; a limiting groove with an opening facing the stopper deflector rod 9 is formed in the rear template 4, the movable stopper 10 is mounted in the limiting groove through an elastic assembly, the elastic assembly can drive the part of the movable stopper 10 to extend out of the limiting groove, and the movable stopper 10 extending out of the limiting groove extends into the sliding groove and is positioned on the push block 8; the sliding groove can drive the movable stopper 10 extending out of the limiting groove to retract into the limiting groove; the ejector sleeve 6 is sleeved on the ejector sleeve needle 7, the lower end of the ejector sleeve 6 is fixed to the ejector plate 2, and the lower end of the ejector sleeve needle 7 is fixed to the bottom plate 1. The utility model discloses an injection mold adopts secondary ejection mechanism in the both sides of back template 4, earlier makes department's bobbin needle 7 break away from product 12 glue position through ejecting for the first time, has the deformation space in well kenozooecium 14 of product 12, then makes product 12 deciduate through ejecting for the second time, and the outer lane of having solved current product 12 surface column 13 has detains the position and the centre and does the problem of inlaying the needle, detaining the unable direct inside deformation drawing of patterns of position when hollow mould.

Further, an installation groove is formed in the upper surface of the rear template 4, a rear mold core 5 is arranged in the installation groove, a cylindrical groove matched with the cylindrical part 13 on the product 12 is formed in the rear mold core 5, and the ejector pin 7 extends into the cylindrical groove from the bottom surface of the cylindrical groove and is used for forming a hollow part 14 of the cylindrical part 13 of the product 12. Furthermore, the injection mold of the invention can be used for processing one product 12 or a plurality of products 12 at the same time, but the cylindrical grooves on the rear mold core 5, the cylindrical parts 13 on the products 12 in each mold, the ejector sleeve needles 7 on the bottom plate 1 and the ejector sleeves 6 on the ejector plate 2 are in one-to-one correspondence in position and number. Further, the height of the ejector pin 7 extending above the bottom surface of the cylindrical groove is the same as the depth of the hollow portion 14 of the cylindrical member 13 of the product 12.

Further, the push block 8 and the stopper deflector rod 9 are arranged side by side, and both sides of the push block 8 are provided with the stopper deflector rod 9; when the movable stopper 10 extends into the sliding groove, the bottom surface of the movable stopper 10 is located on the push block 8, and two ends of the movable stopper are respectively located in the sliding grooves on the stopper shift levers 9 on two sides of the push block 8, so as to ensure the stability during ejection.

Furthermore, the upper side surface of the sliding groove is obliquely inclined upwards from the bottom surface of the sliding groove, and the upper part of the movable stopper 10 facing one side of the sliding groove is provided with an inclined surface matched with the upper side surface of the sliding groove. Furthermore, the lower side surface of the sliding groove is matched with the bottom surface of the movable stopper 10 facing to the sliding groove. In this embodiment, after the first ejection is completed, the rear mold plate 4 and the rear mold core 5 stop moving by the inclined surface matching, so as to facilitate the demolding of the product 12 during the second ejection.

Furthermore, the elastic component is a spring 11, one end of the spring 11 is connected with the groove bottom of the limiting groove, and the other end of the spring is connected with one side of the movable stopper 10 departing from the stopper deflector rod 9. In the embodiment, the movable stop 10, the spring 11, the push block 8 and the stop deflector rod 9 are matched to realize two-time ejection actions so as to reduce the occupation of the internal space of the die, and the die has a simple structure and is easy to operate.

The product applied to the injection mold core-pulling mechanism of the embodiment is shown in fig. 1-3, wherein one surface of the product 12 is provided with 9 column positions, the outer ring of each column is provided with a circle of 0.3mm inverted buckles, and the middle of each column is hollow. The concrete process of opening the mold by adopting the core-pulling mechanism of the embodiment is as follows: before ejection, the movable stop 10 extends out of the limiting groove of the rear template 4 and into the sliding groove of the stop deflector rod 9 under the action of the spring 11, and the movable stop 10 can slide in the sliding groove along the vertical direction; when the top plate is ejected, the ejector block 8 is ejected upwards along with the ejector pin plate 2, because the part of the movable stopper 10 extending into the sliding groove is positioned on the ejector block 8, the ejector block 8 can push the movable stopper 10 to move upwards along the sliding groove, namely the ejector pin plate 2 and the rear mold plate 4 move upwards when the ejector block 10 starts to be ejected, at the moment, the driver cylinder 6, the rear mold core 5 and the product 12 are also ejected upwards together, when the movable stopper 10 moves to the state that the inclined surface of the movable stopper 10 is contacted with the upper side surface of the sliding groove, the movable stopper 10 retracts into the limiting groove due to the inclined surface force of the stopper deflector rod 9, and simultaneously, under the action of a limiting stroke screw, the rear mold plate 4 and the rear mold core 5 stop moving, the driver cylinder needle 7 is separated from the glue position of the product 12, and a deformation space is arranged in the hollow part 14 of the product 12, so as to finish the first ejection action; then the pushing block 8 continues to move upwards, the ejector plate 2 continues to push out, the ejector sleeve 6 continues to push out forwards, and the product 12 is demoulded to finish the second ejection action.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an injection mold with secondary ejection mechanism which characterized in that: the ejection mechanism comprises a secondary ejection mechanism, an ejector sleeve needle, and a bottom plate, an ejector plate, a supporting plate and a rear template which are sequentially arranged from bottom to top; the secondary ejection mechanism comprises a push block, a stop block deflector rod and a movable stop block, and the lower end of the push block is fixed on the ejector plate; the lower end of the stop dog deflector rod is fixed on the supporting plate, and the upper end of the stop dog deflector rod is provided with a sliding groove with an opening facing the rear template; the rear template is provided with a limiting groove with an opening facing the stopper driving lever, the movable stopper is arranged in the limiting groove through an elastic assembly, the elastic assembly can drive the part of the movable stopper to extend out of the limiting groove, and the movable stopper extending out of the limiting groove extends into the sliding groove and is positioned on the push block; the sliding groove can drive the movable stopper extending out of the limiting groove to retract into the limiting groove; the ejector sleeve is sleeved on the ejector sleeve needle, the lower end of the ejector sleeve is fixed to the ejector plate, and the lower end of the ejector sleeve needle is fixed to the bottom plate.

2. An injection mold having a secondary ejection mechanism as in claim 1, wherein: the upper surface of the rear template is provided with a mounting groove, a rear mold core is arranged in the mounting groove, a cylindrical groove matched with a cylindrical part on a product is arranged on the rear mold core, and the ejector pin extends into the cylindrical groove from the bottom surface of the cylindrical groove.

3. An injection mold having a secondary ejection mechanism as in claim 2, wherein: the cylindrical grooves, the cylindrical pieces and the ejector pins are in one-to-one correspondence.

4. An injection mold having a secondary ejection mechanism as in claim 2, wherein: the height of the ejector pin extending to the position above the bottom surface of the cylindrical groove is consistent with the depth of the hollow part of the cylindrical part on the product.

5. An injection mold having a secondary ejection mechanism as in claim 1, wherein: the push block and the stop block deflector rod are arranged in parallel, and both sides of the push block are provided with the stop block deflector rod; when the movable stop block extends into the sliding groove, the bottom surface of the movable stop block is positioned on the push block, and two ends of the movable stop block are respectively positioned in the sliding grooves on the stop block driving levers on two sides of the push block.

6. An injection mold having a secondary ejection mechanism as in claim 1, wherein: the upper side of the sliding groove is obliquely inclined upwards from the bottom surface of the sliding groove, and the upper part of the movable stopper facing one side of the sliding groove is provided with an inclined plane matched with the upper side of the sliding groove.

7. An injection mold having a secondary ejection mechanism as in claim 6, wherein: the lower side surface of the sliding groove is matched with the bottom surface of one side of the sliding groove, which faces the movable stop block.

8. An injection mold having a secondary ejection mechanism as in claim 1, wherein: the elastic component is a spring, one end of the spring is connected with the groove bottom of the limiting groove, and the other end of the spring is connected with one side of the movable stop block, which deviates from the stop block deflector rod.