CN218139645U

CN218139645U - Injection mold and rotary core-pulling mechanism thereof

Info

Publication number: CN218139645U
Application number: CN202222118558.2U
Authority: CN
Inventors: 沈海峰; 史恩波; 谢文挺; 黄鑫辉
Original assignee: Zhejiang Taizhou Mingzhen Mold Co ltd
Current assignee: Zhejiang Taizhou Mingzhen Mold Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-12-27
Anticipated expiration: 2032-08-11

Abstract

The utility model provides an injection mold and rotatory mechanism of loosing core thereof. The utility model discloses a movable mould, be equipped with the core on the movable mould, still include rotatory stirring subassembly, rotatory stirring subassembly includes stirring arm, rotatory stirring drive division, be equipped with rotation end, drive end on the stirring arm, rotation end rotates and connects in on the movable mould, the drive power of rotatory stirring drive division acts on the drive end and drives stirring arm and overturn along rotation end; when the material turning arm turns, the side edge of the material turning arm can push plastic parts which are injection molded on the mold core away from the mold core. The core pulling structure does not adopt a traditional core pulling rotating mechanism with a rack meshed with a gear, is relatively simple in structure, and effectively controls the whole manufacturing cost.

Description

Injection mold and rotary core-pulling mechanism thereof

Technical Field

The utility model relates to an injection mold, in particular, relate to an injection mold and rotatory mechanism of loosing core thereof.

Background

The demolding of the core at the part of the plastic product with the circular arc-shaped concave inverted buckle is generally realized by a rotary core-pulling mechanism.

The main structure of the conventional rotary core-pulling mechanism, such as a rotary core-pulling die disclosed in Chinese utility model with publication number CN206374145U, comprises an upper fixed die and a lower movable die, wherein the upper die cavity and the lower die cavity are respectively and correspondingly arranged on the fixed die and the movable die, a spur rack is arranged on the movable die, the spur rack is horizontally arranged below the movable die in a sliding manner, and the outer end of the spur rack is connected with a piston rod of a first hydraulic cylinder; the arc sliding block is arranged in the lower die cavity in a sliding manner, and an arc rack is arranged at the edge of the arc sliding block; the outer periphery of the vertically arranged rotating rod is respectively provided with a first gear and a second gear, a straight rack is matched with the first gear, and an arc rack is matched with the second gear; and the straight-moving slide block is horizontally arranged on the movable die in a sliding manner, is connected with the arc slide block to form an injection molding cavity of the workpiece, and the outer end of the straight-moving slide block is connected with a piston rod of the second hydraulic oil cylinder.

Although the conventional rotary core pulling can complete basic rotary core pulling forming work, the rotary core pulling mechanism adopts a structural mode that a rack is meshed with a gear to drive the core pulling mechanism to rotate, the structure is relatively complex, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the above, the first objective of the present invention is to provide a rotary core-pulling mechanism, which has a relatively simple structure and effectively controls the overall manufacturing cost.

In order to solve the technical problem, the technical scheme of the utility model is that:

a rotary core pulling mechanism comprises a movable die, wherein a core is arranged on the movable die, the rotary core pulling mechanism also comprises a rotary material overturning assembly, the rotary material overturning assembly comprises a material overturning arm and a rotary material overturning driving part, the material overturning arm is provided with a rotating end and a driving end, the rotating end is rotatably connected to the movable die, and the driving force of the rotary material overturning driving part acts on the driving end and drives the material overturning arm to overturn along the rotating end; when the material turning arm turns, the side edge of the material turning arm can push plastic parts which are injection molded on the mold core away from the mold core.

According to the technical scheme, the corresponding plastic part is formed on the mold core through injection molding, the rotary material turning driving part directly acts on the driving end, the material turning arm turns around the rotating end, at the moment, the plastic part which is formed on the mold core through injection molding can be pushed away from the mold core by the side edge of the material turning arm, and rotary core pulling can be achieved between the plastic part and the mold core due to the turning action of the whole material turning arm; the core pulling structure does not adopt a traditional core pulling rotating mechanism with a rack meshed with a gear, is relatively simple in structure, and effectively controls the whole manufacturing cost.

Preferably, the material turning arm comprises a C-shaped first arm section, the first arm section surrounds the outer side of the mold core, the two ends of the first arm section are respectively provided with the rotating ends, and the middle of the first arm section is provided with a contact surface used for contacting with a plastic part which is injection molded on the mold core.

Through the technical scheme, on one hand, the number of the rotating ends arranged on the turnover arm is two, so that the rotating smoothness is higher; in another scheme, the material turning arm surrounds the outer side of the mold core, so that the effective contact area of the material turning arm and a plastic part on the mold core is increased, namely the area of a contact surface is controlled to be the largest, and the material turning stability is improved.

Preferably, the material turning arm is further provided with a second arm section, and the second arm section is provided with an installation chute;

the rotary material turning driving part comprises a rotary material turning driving cylinder, a cylinder head of the rotary material turning driving cylinder penetrates through the mounting chute, a side chute is arranged in the mounting chute, a sliding bolt is arranged on the cylinder head of the rotary material turning driving cylinder, and the sliding bolt penetrates into the side chute and can slide along the side chute.

Through above-mentioned technical scheme, when the cylinder head that rotatory stirring drove actuating cylinder removed, the cylinder head can remove along the installation spout, and the bolt that slides also can remove along the groove that sideslips, and then makes the upset drive of stirring arm more smooth and easy.

Preferably, the first arm section and the second arm section are in split design, and the first arm section is connected with the second arm section through a first bolt.

Through the technical scheme, the first arm section and the second arm section are convenient to disassemble and assemble, and the maintenance is more convenient.

Preferably, the movable die is further provided with a die foot and a movable plate, the rotary material overturning driving part is mounted on the movable plate, the movable plate is further provided with a connecting rod, and the rotating end of the material overturning arm is rotatably connected to the end part of the connecting rod;

and a driving part is arranged between the mould foot and the movable plate and is used for driving the movable plate to move towards one side close to or far away from the direction of the core.

According to the technical scheme, when the plastic part on the core needs to be ejected, firstly, the driving piece drives the movable plate to move towards the direction close to the core, the movable plate can push the connecting rod, the material turning arm and the rotary material turning driving cylinder to move towards the direction close to the core, and at the moment, the material turning arm can push the injection-molded plastic part to be separated from the core in advance; secondly, the rotary material turning driving cylinder drives the rotary material turning driving cylinder to directly act on the driving end, the material turning arm turns around the rotating end, at the moment, the side edge of the material turning arm can push a plastic piece which is injection-molded on the core away from the core, and the whole turning arm turns, so that rotary core pulling can be realized between the plastic piece and the core; through pre-demoulding and rotary core-pulling demoulding, the quality of the demoulded and formed plastic part is better, and the demoulding is smoother.

Preferably, the driving member comprises a plate driving cylinder, the plate driving cylinder is mounted on the movable plate, and a cylinder head of the plate driving cylinder is connected to the mold foot.

Through above-mentioned technical scheme, the cylinder head of board drive actuating cylinder directly supports in the mould foot, can stably drive and take place relative movement between fly leaf and the mould foot.

Preferably, be equipped with the constant head tank on the fly leaf, rotatory stirring drives actuating cylinder and imbeds in the constant head tank, rotatory stirring drive actuating cylinder with link to each other through the second bolt between the fly leaf.

Through above-mentioned technical scheme, rotatory stirring drives actuating cylinder and can fixes a position through the constant head tank, installs by the second bolt again, and installation stability is higher, and it is convenient to install.

The utility model discloses a second purpose provides an injection mold, and this injection mold is inside rotatory mechanism of loosing core simple structure relatively, has effectively controlled the whole manufacturing cost of mould.

an injection mold comprises the rotary core-pulling mechanism.

Through the technical scheme, the traditional core-pulling rotating mechanism of the rack-meshed gear is abandoned by the injection mold, the structure is relatively simple, and the overall manufacturing cost is effectively controlled.

Drawings

FIG. 1 is a schematic view of an installation structure of the first embodiment;

FIG. 2 is a schematic structural diagram of a rotary material turning assembly according to an embodiment;

fig. 3 is a schematic structural diagram of the second embodiment.

Reference numerals are as follows: 1. moving the mold; 2. a core; 3. rotating the material turning assembly; 31. a material turning arm; 311. a first arm segment; 312. a second arm segment; 313. a rotating end; 314. a driving end; 32. a rotary material-turning driving part; 321. rotating the material turning driving cylinder; 4. installing a chute; 5. a side chute; 6. sliding the bolt; 7. a first bolt; 8. a mould leg; 9. a movable plate; 10. a drive member; 101. a plate drive cylinder; 11. positioning a groove; 12. a second bolt; 13. a contact surface; 14. a connecting rod.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

The first embodiment is as follows:

a rotary core-pulling mechanism, see figure 1, comprises a movable mould 1, wherein a mould core 2 is arranged on the movable mould 1, and a plastic part can be injection-molded on the mould core 2.

Referring to fig. 1, a rotary upender assembly 3 is also arranged on the movable die 1. The rotating stripper unit 3 is primarily used to strip plastic parts from the core 2.

In detail, referring to fig. 1 and 2, the rotating and stirring assembly 3 includes a stirring arm 31 and a rotating and stirring driving part 32. The stirring arm 31 comprises a C-shaped first arm segment 311, the first arm segment 311 surrounds the mold core 2 at an outer position, and a contact surface 13 for contacting with a plastic part which is injection molded on the mold core 2 is arranged in the middle of the first arm segment 311.

Referring to fig. 1 and fig. 2, the material turning arm 31 is further provided with a second arm section 312, the first arm section 311 and the second arm section 312 are designed in a split manner, and the first arm section 311 and the second arm section 312 are connected through a first bolt 7.

Referring to fig. 2, the first arm segment 311 is provided with a rotation end 313 at each end.

Referring to fig. 1 and 2, the end of the second arm segment 312 away from the first arm segment 311 is provided with a driving end 314.

Referring to fig. 1 and 2, the driving force of the rotating and stirring driving part 32 acts on the driving end 314 and drives the stirring arm 31 to turn along the rotating end 313; when the material turning arm 31 is turned over, the side edge of the material turning arm 31 can push the plastic part which is injection molded on the mold core 2 away from the mold core 2.

Referring to fig. 1 and fig. 2, the rotating and turning driving part 32 includes a rotating and turning driving cylinder 321, an installation chute 4 is further disposed at an end of the second arm section 312 away from the first arm section 311, a cylinder head of the rotating and turning driving cylinder 321 passes through the installation chute 4, a side chute 5 is disposed in the installation chute 4, a sliding bolt 6 is disposed on the cylinder head of the rotating and turning driving cylinder 321, and the sliding bolt 6 penetrates into the side chute 5 and can slide along the side chute 5.

Referring to fig. 1 and 2, the movable mold 1 is further provided with mold legs 8 and a movable plate 9. The rotary stirring driving part 32 is mounted on the movable plate 9. The movable plate 9 is further provided with a connecting rod 14, and the rotating end 313 of the stirring arm 31 is rotatably connected to the end of the connecting rod 14.

Referring to fig. 1 and 2, a driving member 10 is installed between the mold foot 8 and the movable plate 9, and the driving member 10 is used for driving the movable plate 9 to move toward or away from one side of the mold core 2. The driving member 10 includes a plate driving cylinder 101, the plate driving cylinder 101 is mounted on the movable plate 9, and the plate driving cylinder 101 is connected to the mold leg 8.

Referring to fig. 2, the movable plate 9 is provided with a positioning groove 11, the rotary upender driving cylinder 321 is embedded in the positioning groove 11, and the rotary upender driving cylinder 321 is connected with the movable plate 9 through a second bolt 12.

Example two:

an injection mold, see fig. 3, includes a rotary core-pulling mechanism as in the first embodiment.

Actual injection molding process:

(1) And (4) pre-demoulding. The plastic part is injection molded on the mold core 2, the plate driving cylinder 101 pushes the movable plate 9 to move towards one side of the mold core 2, the movable plate 9 drives the connecting rod 14, the material turning arm 31 and the rotary material turning driving cylinder 321 to move towards one side of the mold core 2 together, and the plastic part is preliminarily demoulded from the mold core 2;

(2) And (5) rotationally pulling cores and demoulding. The rotating material turning driving cylinder 321 drives the material turning arm 31 to turn around the rotating end 313, the contact surface 13 on the first arm section 311 abuts against the plastic part on the mold core 2, and the whole plastic part can be turned over and taken off from the mold core 2 gradually along with the turning action of the material turning arm 31.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a rotatory mechanism of loosing core, includes movable mould (1), be equipped with core (2) on movable mould (1), characterized by:

the material turning device is characterized by further comprising a rotary material turning assembly (3), wherein the rotary material turning assembly (3) comprises a material turning arm (31) and a rotary material turning driving part (32), a rotating end (313) and a driving end (314) are arranged on the material turning arm (31), the rotating end (313) is rotatably connected to the movable die (1), and the driving force of the rotary material turning driving part (32) acts on the driving end (314) and drives the material turning arm (31) to turn along the rotating end (313); when the material overturning arm (31) overturns, the side edge of the material overturning arm (31) can push plastic parts which are injection molded on the mold core (2) away from the mold core (2).

2. The rotary core pulling mechanism according to claim 1, wherein: the material turning arm (31) comprises a C-shaped first arm section (311), the first arm section (311) surrounds the outer side of the mold core (2), the two ends of the first arm section (311) are respectively provided with the rotating ends (313), and the middle of the first arm section (311) is provided with a contact surface (13) which is used for being in contact with a plastic part which is injection molded on the mold core (2).

3. The rotary core-pulling mechanism according to claim 2, wherein:

the material turning arm (31) is also provided with a second arm section (312), and the second arm section (312) is provided with a mounting chute (4);

the rotary material turning driving part (32) comprises a rotary material turning driving cylinder (321), the cylinder head of the rotary material turning driving cylinder (321) penetrates through the installation sliding groove (4), a side sliding groove (5) is arranged in the installation sliding groove (4), a sliding bolt (6) is arranged on the cylinder head of the rotary material turning driving cylinder (321), and the sliding bolt (6) penetrates through the side sliding groove (5) and can slide along the side sliding groove (5).

4. The rotary core pulling mechanism according to claim 3, wherein: the first arm section (311) and the second arm section (312) are in split design, and the first arm section (311) is connected with the second arm section (312) through a first bolt (7).

5. The rotary core pulling mechanism according to claim 3, wherein: the moving die (1) is further provided with a die foot (8) and a movable plate (9), the rotary material overturning driving part (32) is installed on the movable plate (9), the movable plate (9) is further provided with a connecting rod (14), and the rotating end (313) of the material overturning arm (31) is rotatably connected to the end part of the connecting rod (14);

a driving piece (10) is installed between the mold foot (8) and the movable plate (9), and the driving piece (10) is used for driving the movable plate (9) to move towards or away from one side of the direction of the mold core (2).

6. The rotary core pulling mechanism according to claim 5, wherein: the driving part (10) comprises a plate driving cylinder (101), the plate driving cylinder (101) is installed on the movable plate (9), and a cylinder head of the plate driving cylinder (101) is connected to the die leg (8).

7. The rotary core pulling mechanism according to claim 5, wherein: be equipped with constant head tank (11) on fly leaf (9), rotatory stirring drives actuating cylinder (321) and imbeds in constant head tank (11), rotatory stirring drive actuating cylinder (321) with link to each other through second bolt (12) between fly leaf (9).

8. An injection mold is characterized in that: comprising a rotary core pulling mechanism according to claim 7.