CN216708225U

CN216708225U - Demoulding structure of automobile oil can cover mould

Info

Publication number: CN216708225U
Application number: CN202220241901.XU
Authority: CN
Inventors: 诸南扬; 王克福; 赵春; 杨平
Original assignee: Ningbo Qiaoshi Mould Technology Co ltd
Current assignee: Ningbo Qiaoshi Mould Technology Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-06-10
Anticipated expiration: 2032-01-29

Abstract

The utility model provides a demoulding structure of an automobile oil can cover mould, which comprises a fixed mould plate and an ejector pin bottom plate, wherein a core plate is arranged on the fixed mould plate, an inclined core pulling mechanism for forming a cover workpiece is arranged on the ejector pin bottom plate, and the inclined core pulling mechanism comprises a plurality of inclined core pulling pieces which obliquely penetrate through the core plate and connecting rods which are correspondingly arranged on the ejector pin bottom plate; the upper end parts of the inclined drawing core pieces are jointly spliced into a ring shape and used for injection molding the internal thread end of the cover workpiece; the lower end of the inclined core pulling piece is slidably mounted in the sliding groove of the connecting rod through a sliding block. The utility model has the function of secondary demoulding; the center bottom plate drives the inclined core pulling mechanism to realize one-time demoulding of the workpiece; continuously ejecting the workpiece through an ejector pin of the ejector pin panel to complete secondary demolding; the internal thread part of the workpiece can not be damaged during demoulding, the product yield is high, and the problem that the workpiece can not be demoulded through the traditional rotary demoulding in the prior art can be solved.

Description

Demoulding structure of automobile oil can cover mould

Technical Field

The utility model relates to the technical field of injection molds, in particular to a demolding structure of an automobile oil can cover mold.

Background

The die is a tool for making a shaped article, and the blank is formed into a specific shape and size under the action of an external force. The automobile oil can is a plastic product and is formed by injection molding through an injection mold, and the oil can cover connected with the automobile oil can is also formed by injection molding through the injection mold. The oil can cover is provided with internal threads, so that the upper die and the lower die cannot be directly opened, the existing injection molds on the market are realized by reversely (opposite to the demolding direction) rotating and demolding through an internal forming mandrel, and generally need additional oil cylinders and other power drives, so that the structure is complex, the control precision requirement is high, and the oil can cover cannot be suitable for the demolding mode of the forming mandrel if the cover is internally provided with grooves and other structures.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The technical problem to be solved by the utility model is to provide a demoulding structure of an automobile oil can cover mould, which realizes demoulding with a workpiece by driving an inclined core-pulling mechanism through a thimble bottom plate.

(II) technical scheme

In order to solve the technical problem, the utility model provides a demoulding structure of an automobile oil can cover mould, which comprises a fixed mould plate and an ejector pin bottom plate, wherein a core plate is arranged on the fixed mould plate, an inclined core-pulling mechanism for forming a cover workpiece is arranged on the ejector pin bottom plate, and the inclined core-pulling mechanism comprises a plurality of inclined core-pulling pieces which obliquely penetrate through the core plate and connecting rods which are correspondingly arranged on the ejector pin bottom plate; the upper end parts of the inclined drawing core pieces are jointly spliced into a ring shape and used for injection molding the internal thread end of the cover workpiece; the lower end of the inclined core pulling piece is slidably mounted in the sliding groove of the connecting rod through a sliding block; and during demoulding, the ejector pin bottom plate drives the inclined core pulling piece to move upwards in an inclined mode through the connecting rod, so that the upper end of the ejector pin bottom plate is separated from the internal thread end of the cover workpiece, and the cover workpiece is ejected out of the core plate upwards. Among this technical scheme, can combine the oblique core piece of taking out of core mechanism to one side through thimble bottom plate to realize the drawing of patterns, need not extra structure and realize, borrow the thimble structure to realize the drawing of patterns, simple structure is reliable.

Furthermore, the inclined core pulling piece specifically comprises a first inclined core pulling rod and a second inclined core pulling rod which penetrate through the core plate, and the first inclined core pulling rod and the second inclined core pulling rod are arranged at intervals and are surrounded into a ring shape. The speed of demoulding the second inclined core pulling rod to the inner side is greater than that of demoulding the first inclined core pulling rod to the inner side, when the die is closed, the first inclined core pulling rod and the second inclined core pulling rod form a core part for forming a cover workpiece, and after the die is opened, the first inclined core pulling rod and the second inclined core pulling rod are driven to demould to the inner side through the ejector pin bottom plate and are separated from the internal thread end of the cover workpiece; an included angle (acute angle) formed by the first inclined core pulling rod relative to the bottom surface of the core plate is larger than an included angle (acute angle) formed by the second inclined core pulling rod relative to the bottom surface of the core plate, so that the speed (in the radial direction) of demoulding the second inclined core pulling rod towards the inner side is larger than the speed of demoulding the first inclined core pulling rod towards the inner side, and mutual interference can be avoided when demoulding towards the inner side.

Furthermore, a thimble panel is installed on the thimble bottom plate, and a thimble is arranged on the thimble panel.

Furthermore, a forming mandrel is arranged on the thimble base plate; the cover is characterized in that a sinking groove is formed in the inner side of the cover workpiece, and the inclined core-pulling piece and the upper end of the forming mandrel are provided with forming flanges used for forming the sinking groove.

Further, a first through chute for the first inclined core rod to slide and a second through chute for the second inclined core rod to slide are arranged on the core plate; an included angle (acute angle) formed by the first through sliding groove and the bottom surface of the core plate is larger than an included angle (acute angle) formed by the second through sliding groove and the bottom surface.

Furthermore, the thimble bottom plate is connected with the thimble panel through a button machine pull rod; a telescopic sliding block is arranged on one side, close to the button machine pull rod, of the thimble panel, and the telescopic sliding block is buckled with the button machine pull rod in a normal state; and during secondary demoulding, the inclined upper end of the button machine pull rod relatively pushes the telescopic sliding block to separate the telescopic sliding block from the button machine pull rod, so that the ejector pin panel is separated from the ejector pin bottom plate, and the ejector pin of the ejector pin panel continues to push the cover workpiece upwards. When the mold is opened, firstly, the thimble base plate and the thimble panel move upwards together to drive the inclined core pulling piece and the forming mandrel to move to finish one-time demolding; and separating the ejector pin panel from the ejector pin bottom plate through the pull rod of the button machine during secondary demolding, and continuously ejecting the cover workpiece upwards by the ejector pin on the ejector pin panel to finish secondary demolding.

Furthermore, the lower end of the inclined core pulling piece is in plug-in fit with the sliding block through a protruding part.

Further, the inclined core pulling member specifically comprises three first inclined core pulling rods and three second inclined core pulling rods; a first insert is formed at the upper end of the first inclined core-pulling rod, a second insert is formed at the upper end of the second inclined core-pulling rod, and two inclined side ends of the second insert are spliced with the flat side end of the first insert; in the technical scheme, the first inclined core pulling rod and the second inclined core pulling rod are arranged oppositely, the first inclined core pulling rod and the second inclined core pulling rod are contacted with each other during die assembly, the demolding speed of the second inclined core pulling rod is greater than that of the first inclined core pulling rod, the three second inclined core pulling rods are close to the circle center fast, and the three second inclined core pulling rods cannot be interfered when the three first inclined core pulling rods are close to the circle center.

(III) advantageous effects

Compared with the prior art, the demoulding structure of the automobile oil can cover mould has the following advantages:

1) the secondary demoulding function is realized; when the workpiece is demoulded for one time, the thimble base plate drives the inclined core-pulling mechanism to realize effective demould of the workpiece, the internal thread part of the workpiece cannot be damaged, and the finished product rate of the product is high; during secondary demolding, the ejector pin panel is separated from the ejector pin bottom plate, and the ejector pins of the ejector pin panel continuously eject the workpiece out of the core plate to complete demolding;

2) the inclined core pulling part of the inclined core pulling mechanism is obliquely arranged on the core plate and is specifically divided into a first inclined core pulling rod and a second inclined core pulling rod, and the two inclined core pulling rods have different demolding speeds towards the inner side during demolding, so that mutual interference cannot be caused;

3) the inner side of the cover workpiece is provided with a sinking groove, and demolding is finished by injection molding of molding flanges arranged at the upper ends of the inclined core pulling piece, the molding core shaft and the core plate and combining the inclined core pulling piece formed by splicing, a connecting rod and a sliding block of the inclined core pulling mechanism; the problem of among the prior art can't realize the drawing of patterns of work piece through traditional rotatory drawing of patterns is solved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cut-away view of C-C of FIG. 2;

fig. 4 is a perspective view of a core plate of the present invention;

FIG. 5 is a schematic view of a portion of a core plate according to the present invention;

FIG. 6 is a perspective view of the diagonal core-pulling mechanism of the present invention;

FIG. 7 is a schematic view of the installation of the core-pulling mechanism of the present invention to a core plate;

FIG. 8 is a top view of the diagonal core-pulling mechanism of the present invention;

FIG. 9 is a schematic view of the first and second diagonal draw bar before and after demolding in accordance with the present invention;

FIG. 10 is a perspective view of a first tapered core rod and a connecting rod portion of the present invention;

FIG. 11 is a perspective view of a second diagonal draw bar of the present invention;

FIG. 12 is a perspective view of a cover workpiece according to the present invention;

wherein: the structure comprises a fixed template 1, an ejector pin bottom plate 2, a core plate 3, a cover workpiece 4, an inclined core piece 5, a connecting rod 6, a sliding block 7, a sliding groove 8, a first inclined core rod 9, a second inclined core rod 10, an ejector pin panel 11, an ejector pin 12, a forming mandrel 13, a first through chute 14, a second through chute 15, a fastener pull rod 16, a telescopic slider 17, a boss 18, a first insert 19, a second insert 20, an inclined side end 21, a flat side end 22, a sunken groove 23 and a forming flange 24.

Detailed Description

Referring to fig. 1 to 12, the utility model provides a demoulding structure of an automobile oil can cover mould, which comprises a fixed mould plate 1 and an ejector pin bottom plate 2, wherein a core plate 3 is arranged on the fixed mould plate 1, an inclined core-pulling mechanism for forming a cover workpiece 4 is arranged on the ejector pin bottom plate 2, and the inclined core-pulling mechanism comprises a plurality of inclined core-pulling pieces 5 which obliquely penetrate through the core plate 3 and connecting rods 6 correspondingly arranged on the ejector pin bottom plate 2; the upper ends of the inclined core pieces 5 are spliced together into a ring shape and used for injection molding the internal thread end of the cover workpiece 4; the lower end of the inclined core pulling piece 5 is slidably arranged in a sliding groove 8 of the connecting rod 6 through a sliding block 7; during demoulding, the thimble bottom plate 2 drives the inclined core-pulling piece 5 to move upwards in an inclined mode through the connecting rod 6, so that the upper end of the thimble bottom plate is separated from the internal thread end of the cover workpiece 4, and meanwhile the cover workpiece 4 is pushed out of the core plate 3 upwards. In the embodiment, the demoulding can be realized by combining the thimble bottom plate 2 with the inclined core pulling piece 5 of the inclined core pulling mechanism without an additional structure, the demoulding is realized by using the thimble structure for reference, and the structure is simple and reliable.

Referring to fig. 6 to 11, the inclined core pulling element 5 specifically includes a first inclined core pulling rod 9 and a second inclined core pulling rod 10 penetrating through the core plate 3, and the first inclined core pulling rod 9 and the second inclined core pulling rod 10 are arranged at intervals and enclose an annular shape. The inward demolding speed of the second oblique core pulling rod 10 is higher than the inward demolding speed of the first oblique core pulling rod 9, when the mold is closed, the first oblique core pulling rod 9 and the second oblique core pulling rod 10 form a mold core part for forming the cover workpiece 4, and after the mold is opened, the first oblique core pulling rod 9 and the second oblique core pulling rod 10 are driven to be demolded inward through the ejector pin bottom plate and separated from the internal thread end of the cover workpiece 4; an included angle (acute angle) formed by the first inclined core pulling rod 9 relative to the bottom surface of the core plate 3 is larger than an included angle (acute angle) formed by the second inclined core pulling rod 10 relative to the bottom surface of the core plate 3, so that the speed (in the radial direction) of demoulding the second inclined core pulling rod 10 towards the inner side is larger than the speed of demoulding the first inclined core pulling rod 9 towards the inner side, and mutual interference can be avoided when demoulding towards the inner side.

Referring to fig. 6, 8 and 9, in the present embodiment, the diagonal core member 5 specifically includes three first diagonal core bars 9 and three second diagonal core bars 10; a first insert 19 is formed at the upper end of the first inclined core bar 9, a second insert 20 is formed at the upper end of the second inclined core bar 10, and two inclined side ends 21 of the second insert 20 are spliced with a flat side end 22 of the first insert 19. Referring to fig. 9, in this embodiment, the first oblique core rod 9 and the second oblique core rod 10 are disposed oppositely, the first oblique core rod 9 and the second oblique core rod 10 contact each other during mold closing, the demolding speed of the second oblique core rod 10 is greater than that of the first oblique core rod 9, the three second oblique core rods 10 approach to the center of a circle quickly, and the three second oblique core rods 10 are not interfered when the three first oblique core rods 9 approach to the center of a circle.

Referring to fig. 5, the core plate 3 is provided with a first through chute 14 for the first inclined core rod 9 to slide and a second through chute 15 for the second inclined core rod 10 to slide; the angle (acute angle) formed by the first through runner 14 and the bottom surface of the core plate 3 is larger than the angle (acute angle) formed by the second through runner 15 and the bottom surface.

Referring to fig. 2 and 3, the thimble board 11 is mounted on the thimble base board 2, the thimble board 11 is provided with a thimble 12, and the thimble 12 is used for ejecting the cover workpiece 4. The thimble bottom plate 2 is connected with the thimble panel 11 through a button machine pull rod 16; a telescopic sliding block 17 is arranged on one side of the thimble panel 11 close to the button machine pull rod 16, and the telescopic sliding block 17 is buckled with the button machine pull rod 16 in a normal state; during secondary demoulding, the inclined upper end of the button machine pull rod 16 relatively pushes the telescopic slide block 17 to separate from the button machine pull rod 16, so that the ejector pin panel 11 is separated from the ejector pin bottom plate 2, and the ejector pin 12 of the ejector pin panel 11 continuously pushes the cover workpiece 4 upwards. When the mold is opened, firstly, the thimble base plate 2 and the thimble panel 11 move upwards together to drive the inclined core-pulling piece 5 and the forming mandrel 13 to move to complete one-time demolding; during secondary demoulding, the thimble panel 11 is separated from the thimble base plate 2 through the button machine pull rod 16, the thimble 12 on the thimble panel 11 continuously pushes out the cover workpiece 4 upwards, and secondary demoulding is completed. In this embodiment, the demolding of the inclined core pulling mechanism is a primary demolding, and the ejection of the cap workpiece by the ejector pin of the ejector pin panel is continued to be ejected upwards, which is a secondary demolding.

Referring to fig. 3, 6 and 7, the thimble base plate 2 is further provided with a forming mandrel 13; the inner side of the cover workpiece 4 is provided with a sunken groove 23, the inclined core piece 5 and the upper end of the forming mandrel 13 are provided with forming flanges 24 for forming the sunken groove 23, and the upper end of the core plate 3 is also provided with corresponding forming flange 24 parts, and the sunken groove 23 is formed by injection molding of the inclined core piece 5 and the forming mandrel 13.

Referring to fig. 7 and 11, the lower end of the inclined core member 5 is inserted into the sliding block 7 through the protrusion 18, so that the two components form a whole.

The utility model has the function of secondary demoulding; the ejector pin bottom plate drives the inclined core pulling mechanism to realize one-time demoulding of the workpiece, the internal thread part of the workpiece cannot be damaged, and the finished product rate of the product is high; separating the ejector pin panel from the ejector pin bottom plate through the pull rod of the button machine, and continuously ejecting the workpiece out of the core plate by the ejector pin of the ejector pin panel to finish secondary demoulding operation; the first inclined core pulling rod and the second inclined core pulling rod of the inclined core pulling mechanism have different demolding speeds towards the inner side during demolding, so that mutual interference cannot be caused; the upper ends of the inclined core pulling piece, the forming core shaft and the core plate are provided with forming flanges which are used for injection molding of a sink groove on the inner side of a cover workpiece, and demoulding is realized by combining an inclined core pulling mechanism, so that the problem that the workpiece demoulding can not be realized by traditional rotary demoulding in the prior art can be solved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A demoulding structure of an automobile oil can cover mould comprises a fixed mould plate (1) and an ejector pin bottom plate (2), wherein a core plate (3) is arranged on the fixed mould plate (1), and the demoulding structure is characterized in that an inclined core-pulling mechanism for forming a cover workpiece (4) is arranged on the ejector pin bottom plate (2), and comprises a plurality of inclined core-pulling pieces (5) which obliquely penetrate through the core plate (3) and connecting rods (6) which are correspondingly arranged on the ejector pin bottom plate (2); the upper ends of the inclined core pieces (5) are spliced together into a ring shape and used for injection molding the internal thread end of the cover workpiece (4); the lower end of the inclined core pulling piece (5) is slidably arranged in a sliding groove (8) of the connecting rod (6) through a sliding block (7); when in demoulding, the thimble bottom plate (2) drives the inclined core pulling piece (5) to move upwards through the connecting rod (6), so that the upper end of the thimble bottom plate is separated from the internal thread end of the cover workpiece (4), and the cover workpiece (4) is ejected out of the core plate (3) upwards.

2. The mold release structure of an automobile oil can lid as claimed in claim 1, wherein the diagonal draw core member (5) comprises a first diagonal draw core bar (9) and a second diagonal draw core bar (10) penetrating the core plate (3), and the first diagonal draw core bar (9) and the second diagonal draw core bar (10) are arranged at intervals and enclose a ring shape.

3. The mold release structure for an automobile oil can lid mold according to claim 2, wherein the second diagonal draw bar (10) is released inside at a speed faster than that of the first diagonal draw bar (9).

4. The structure for demolding an automotive oil can cover mold as claimed in claim 1, wherein a thimble panel (11) is mounted on said thimble base plate (2), and a thimble (12) is disposed on said thimble panel (11).

5. The demolding structure of the automobile oil can cover mold as claimed in claim 1, wherein the ejector pin base plate (2) is further provided with a forming mandrel (13); the cover is characterized in that a sunken groove (23) is formed in the inner side of the cover workpiece (4), and a forming flange (24) used for forming the sunken groove (23) is arranged at the upper end of the inclined core pulling piece (5) and the forming mandrel (13).

6. The demolding structure of the automobile oil can cover mold according to claim 2, characterized in that the core plate (3) is provided with a first through chute (14) for the sliding of the first inclined core rod (9) and a second through chute (15) for the sliding of the second inclined core rod (10); the included angle formed by the first through sliding chute (14) and the bottom surface of the core plate (3) is larger than the included angle formed by the second through sliding chute (15) and the bottom surface.

7. The demolding structure of an automobile oil can cover mold as claimed in claim 4, wherein the ejector pin base plate (2) is connected with the ejector pin panel (11) through a button machine pull rod (16); a telescopic sliding block (17) is arranged on one side, close to the button machine pull rod (16), of the ejector pin panel (11), and the telescopic sliding block (17) is buckled with the button machine pull rod (16) in a normal state; during secondary demoulding, the inclined upper end of the button machine pull rod (16) relatively pushes the telescopic sliding block (17) to separate the telescopic sliding block from the button machine pull rod (16), so that the ejector pin panel (11) is separated from the ejector pin bottom plate (2), and the ejector pins (12) of the ejector pin panel (11) continue to eject the cover workpiece (4) upwards.

8. The demolding structure of the automobile oil can cover mold as claimed in claim 1, wherein the lower end of the core slanting member (5) is in insertion fit with the sliding block (7) through a protrusion (18).

9. The demolding structure of an automobile oil can lid mold as claimed in claim 2, wherein said diagonal draw core member (5) specifically comprises three said first diagonal draw bar (9) and three said second diagonal draw bar (10); a first insert (19) is formed at the upper end of the first inclined core rod (9), a second insert (20) is formed at the upper end of the second inclined core rod (10), and two inclined side ends (21) of the second insert (20) are spliced with a flat side end (22) of the first insert (19).