CN211868503U

CN211868503U - Secondary core-pulling mechanism of injection mold

Info

Publication number: CN211868503U
Application number: CN202020419346.6U
Authority: CN
Inventors: 曾德运; 张瑞宾
Original assignee: Shenzhen Chuang Long Plastic Mould Co ltd
Current assignee: Shenzhen Chuang Long Plastic Mould Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-06
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a secondary core-pulling mechanism of an injection mold, which relates to the technical field of injection molds and comprises a movable mold and a fixed mold, wherein the movable mold is positioned below the fixed mold, a mounting plate is arranged at the bottom end of the movable mold, a mold core insert is fixed at the top end of the movable mold, an injection pipeline is arranged inside the movable mold, the top end of the injection pipeline extends to the interior of the mold core insert, a fixed plate is arranged at the top end of the fixed mold, and a mold core matched with the mold core insert is fixed at the bottom end of the fixed mold, the utility model can realize the horizontal sliding of a core-pulling block by arranging a linear slide block and a linear slide groove, effectively increases the stability of the core-pulling block during moving, and can realize the accurate positioning of the core-pulling block by utilizing a positioning block and a positioning groove so as to facilitate the quick installation of the core, thereby contributing to the improvement of the production efficiency.

Description

Secondary core-pulling mechanism of injection mold

Technical Field

The utility model belongs to the technical field of injection mold, concretely relates to injection mold secondary mechanism of loosing core.

Background

The plastic mould is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

However, the injection mold secondary core-pulling mechanism in the current market has defects in the use process, such as: the loose core piece removes in-process poor stability, and can not fix a position it fast, precision when influencing the installation of loose core piece, in addition, does not set up buffer structure, can not cushion when the compound die, the vibrations that produce when can not alleviate the compound die cause structural damage easily, and influence compound die efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold secondary mechanism of loosing core to the piece of loosing core that proposes in solving above-mentioned background art removes in-process poor stability, and can not fix a position it fast, can not cushion when the compound die in addition, can not alleviate the problem of the vibrations that produce when the compound die.

In order to achieve the above object, the utility model provides a following technical scheme: a secondary core-pulling mechanism of an injection mold comprises a movable mold and a fixed mold, wherein the movable mold is positioned below the fixed mold, a mounting plate is installed at the bottom end of the movable mold, a mold core insert is fixed at the top end of the movable mold, an injection pipeline is arranged inside the movable mold, the top end of the injection pipeline extends into the mold core insert, a fixed plate is installed at the top end of the fixed mold, a mold core matched with the mold core insert is fixed at the bottom end of the fixed mold, the bottom end of the mold core extends into the mold core insert and is communicated with the injection pipeline, two fixed blocks are symmetrically installed at the bottom of the fixed plate and positioned at two sides of the fixed mold, hydraulic cylinders are fixed at two opposite sides of the fixed blocks, telescopic rods matched with the two hydraulic cylinders are arranged at one opposite sides of the two fixed blocks, and a core-pulling, and the bottom of two upper core-pulling blocks is inserted with a lower core-pulling block, two linear sliding blocks are installed at the top of the upper core-pulling block, meanwhile, the bottom of the fixed die is symmetrically provided with linear sliding grooves in one-to-one correspondence with the two linear sliding blocks, two connecting columns are fixed at the top of the lower core-pulling block, connecting grooves in one-to-one correspondence with the two connecting columns are also formed in the inner parts of the upper core-pulling blocks, and locking screw rods penetrating through the inner parts of the connecting columns are screwed on the front surfaces of the two upper core-pulling blocks.

Preferably, the top end of the movable die and the two sides of the core insert are also fixedly connected with two buffer springs through a fixing seat, the two buffer springs are connected with a top plate at the top ends and are provided with telescopic cylinders inside, each telescopic cylinder comprises an inner cylinder and an outer cylinder, the end parts of the inner cylinder and the outer cylinder are respectively connected with the two ends of each buffer spring, and meanwhile, the bottom of each lower core-pulling block is provided with a buffer groove corresponding to the top plate.

Preferably, the two upper core-pulling blocks are provided with positioning blocks at one ends adjacent to the mold core, and positioning grooves matched with the positioning blocks are symmetrically formed in the two sides of the mold core.

Preferably, the top ends of the two top plates are respectively bonded with a cushion pad, the section length of the cushion pad is consistent with that of the top plates, and the groove length of the cushion groove is matched with that of the top plates.

Preferably, one end of the locking screw rod, which is located outside the upper core-pulling block, is also fixedly provided with a screwing rod, and arc grooves are formed in two sides of the screwing rod.

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

(1) the utility model discloses a setting of sharp slider and sharp spout can realize the horizontal slip of core pulling block, and the effectual stability that increases when core pulling block removes utilizes locating piece and constant head tank simultaneously, can realize the accurate location of core pulling block to in the quick installation of core pulling block, be favorable to the use of mould, thereby help improving the productivity effect.

(2) The utility model discloses a roof, dashpot, buffer spring and cushion's setting can realize buffering the movable mould, and the effectual vibrations that produce when having alleviated the compound die are favorable to quick compound die, have improved compound die efficiency widely, can prolong the life of part simultaneously, reduce the use cost of mould.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an external view of the present invention;

FIG. 3 is a schematic structural view of the mold of the present invention;

FIG. 4 is an enlarged view of area A of FIG. 1;

FIG. 5 is an enlarged view of area B of FIG. 1;

FIG. 6 is an enlarged view of area C of FIG. 2;

in the figure: 1-mounting a plate; 2, a mold core; 3-injection molding a pipeline; 4-a core block; 5-moving the mold; 6-a linear chute; 7-linear slide block; 8-positioning blocks; 9-fixing the plate; 10-fixing the mold; 11-a connecting column; 12-fixing blocks; 13-upper core-pulling block; 14-a telescopic rod; 15-hydraulic cylinders; 16-lower core-pulling block; 17-a buffer tank; 18-a buffer spring; 19-locking screw rod; 20-a top plate; 21-a cushion pad; 22-a connecting trough; 23-positioning groove.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a secondary core-pulling mechanism of an injection mold comprises a movable mold 5 and a fixed mold 10, wherein the movable mold 5 is positioned below the fixed mold 10, a mounting plate 1 is installed at the bottom end of the movable mold 5, a mold core block 4 is fixed at the top end of the movable mold 5, an injection pipeline 3 is arranged inside the movable mold 5, the top end of the injection pipeline 3 extends into the mold core block 4, a fixing plate 9 is installed at the top end of the fixed mold 10, a mold core 2 matched with the mold core block 4 is fixed at the bottom end of the fixed mold 10, the bottom end of the mold core 2 extends into the mold core block 4 and is communicated with the injection pipeline 3, two fixing blocks 12 are symmetrically installed at the bottom of the fixing plate 9 and positioned at two sides of the fixed mold 10, hydraulic cylinders 15 are fixed at one opposite sides of the two fixing blocks 12, telescopic rods 14 matched with the two hydraulic cylinders 15 are arranged at one opposite sides of the two fixing blocks 12, the bottom ends of the two upper core-pulling blocks 13 are respectively inserted with a lower core-pulling block 16, the top ends of the two upper core-pulling blocks 13 are respectively provided with a linear sliding block 7, the bottom of the fixed die 10 is symmetrically provided with linear sliding chutes 6 corresponding to the two linear sliding blocks 7 one by one, the top ends of the two lower core-pulling blocks 16 are respectively fixed with a connecting column 11, the inside of the two upper core-pulling blocks 13 is also provided with connecting grooves 22 corresponding to the two connecting columns 11 one by one, and the front surfaces of the two upper core-pulling blocks 13 are respectively screwed with a locking screw 19 penetrating through the inside of the connecting column 11, when the upper core-pulling block 13 and the lower core-pulling block 16 move, the horizontal sliding of the core-pulling blocks can be realized through the arrangement of the linear sliding blocks 7 and the linear sliding chutes 6, the stability of the core-pulling blocks during moving is effectively increased, and simultaneously, the positioning, the use of the die is facilitated, and the production benefit is improved.

Further, the top end of the movable mold 5 is located on two sides of the mold core block 4, and the two buffer springs 18 are fixedly connected with the top end of each of the two buffer springs 18 through a fixing seat in a symmetrical mode, the top ends of the two buffer springs 18 are connected with a top plate 20, telescopic cylinders are further arranged inside the two buffer springs 18 and comprise inner cylinders and outer cylinders, the end portions of the inner cylinders and the end portions of the outer cylinders are respectively connected with two ends of each of the buffer springs 18, meanwhile, buffer grooves 17 corresponding to the top plates 20 are formed in the bottoms of the two lower core pulling blocks 16, during mold closing, the movable mold 5 can be buffered through the top plates 20, the buffer grooves 17, the buffer springs 18 and buffer pads 21, vibration generated during mold closing is effectively relieved, quick mold closing is facilitated, mold closing efficiency is greatly improved, the service life of parts can be prolonged, and.

Specifically, two are gone up and are loosed core piece 13 and all install locating piece 8 in the one end that is adjacent to mold core 2, and the both sides of mold core 2 are still symmetrical to be seted up simultaneously with locating piece 8 assorted constant head tank 23, when last loose core piece 13 is contradicted with mold core 2, locating piece 8 can insert in constant head tank 23 to the piece 13 of loosing core will be gone up and is fixed a position, so that loose core piece 13 and the quick location of lower loose core piece 16, the processing of moulding plastics of being convenient for.

It is worth to say that, the top of two roof plates 20 all bonds there is the blotter 21, and the cross-sectional length of blotter 21 is unanimous with the cross-sectional length of roof plate 20, and the slot length of buffer slot 17 matches with the length of roof plate 20 simultaneously, can play the effect of buffering to roof plate 20, avoids roof plate 20 and the inner wall rigid contact of buffer slot 17, and effectual roof plate 20 that prevents damages.

Furthermore, one end of the locking screw 19, which is located outside the upper core pulling block 13, is further fixed with a screwing rod, and both sides of the screwing rod are provided with arc grooves, so that a user can screw the locking screw 19 conveniently.

The utility model discloses a theory of operation and use flow: when the utility model is used, a user can install the fixed die 10 on the installation part of the injection molding device through the fixed plate 9 and install the movable die 5 on the driving part of the injection molding device through the installation plate 1, when in injection molding, the user can firstly insert the lower core-pulling block 16 at the bottom of the upper core-pulling block 13 through the connecting column 11 and the connecting groove 22 and fasten the upper core-pulling block 13 and the lower core-pulling block 16 through the locking screw 19, then drive the telescopic rod 14 to extend through the two hydraulic cylinders 15 to drive the two upper core-pulling blocks 13 to be close to the die core 2, at the moment, the two upper core-pulling blocks 13 horizontally slide under the action of the linear sliding block 7 and the linear sliding groove 6 until the positioning block 8 is clamped in the positioning groove 23, so that the two upper core-pulling blocks 13 are clamped outside the die core 2, and the two lower core-pulling blocks 16 are clamped outside the die core 4 under the, then, the movable mold 5 is driven by the injection molding device driving part to butt the movable mold 5 and the fixed mold 10, so that the mold core block 4 is sleeved at the bottom of the mold core 2, at the moment, the top plate 20 is clamped into the buffer groove 17 until the buffer cushion 21 on the top plate 20 is abutted against the top end inside the buffer groove 17, so that the buffer spring 18 is contracted, the movable mold 5 is buffered, the vibration between the mold core 2 and the mold core block 4 is effectively reduced, the mold closing is further realized, finally, a user injects injection molding liquid into the mold core 2 through the injection molding pipeline 3 to perform cooling molding, thereby completing the injection molding processing, after the processing, during the demolding, the user can drive the movable mold 5 to be far away from the fixed mold 10 through the injection molding device driving part, so that the mold core block 4 is separated from the mold core 2, then drives the telescopic rod 14 to be contracted through the hydraulic cylinder 15, so, so as to drive the upper core-pulling block 13 to be far away from the mold core 2, and simultaneously, the lower core-pulling block 16 follows the movement of the upper core-pulling block 13, thereby realizing the demolding and facilitating the taking out of the workpiece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Injection mold secondary mechanism of loosing core, its characterized in that: including movable mould (5) and cover half (10), movable mould (5) are located the below of cover half (10), wherein mounting panel (1) is installed to the bottom of movable mould (5), and the top of movable mould (5) is fixed with core insert (4), pipeline (3) of moulding plastics has been seted up to the inside of movable mould (5), and the top of the pipeline of moulding plastics (3) extends to the inside of core insert (4), fixed plate (9) are installed on the top of cover half (10), and the bottom mounting of cover half (10) have with core insert (4) assorted core (2), the bottom of core (2) extends to the inside of core insert (4) and is linked together with pipeline (3) of moulding plastics, two fixed blocks (12) are installed to the bottom of fixed plate (9) and the bilateral symmetry that is located (10), two simultaneously the one side that fixed block (12) carried on the back mutually all is fixed with pneumatic cylinder (15), and one opposite side of the two fixed blocks (12) is provided with a telescopic rod (14) matched with the two hydraulic cylinders (15), one end of each telescopic rod (14) adjacent to the mold core (2) is connected with an upper core-pulling block (13), lower core-pulling blocks (16) are respectively inserted at the bottom ends of the two upper core-pulling blocks (13), linear sliding blocks (7) are respectively arranged at the top ends of the two upper core-pulling blocks (13), meanwhile, the bottom of the fixed die (10) is symmetrically provided with linear sliding chutes (6) which are in one-to-one correspondence with the two linear sliding blocks (7), the top ends of the two lower core-pulling blocks (16) are both fixed with connecting columns (11), meanwhile, the insides of the two upper core-pulling blocks (13) are also provided with connecting grooves (22) which are in one-to-one correspondence with the two connecting columns (11), and the front surfaces of the two upper loose core blocks (13) are respectively screwed with a locking screw (19) penetrating through the inside of the connecting column (11).

2. The injection mold secondary core-pulling mechanism according to claim 1, characterized in that: the top of movable mould (5) just is located the both sides of core insert (4) and still passes through two buffer spring (18), two of fixing base symmetry fixedly connected with the top of buffer spring (18) all is connected with roof (20), and the inside of two buffer spring (18) still is provided with telescopic cylinder, telescopic cylinder includes inner tube and urceolus, and the tip of inner tube and urceolus is connected with the both ends of buffer spring (18) respectively, two simultaneously the corresponding dashpot (17) of roof (20) have all been seted up to the bottom of core piece (16) down.

3. The injection mold secondary core-pulling mechanism according to claim 1, characterized in that: two locating blocks (8) are installed at one end, adjacent to the mold core (2), of the upper core-pulling block (13), and meanwhile locating grooves (23) matched with the locating blocks (8) are symmetrically formed in the two sides of the mold core (2).

4. The injection mold secondary core-pulling mechanism according to claim 2, characterized in that: the top ends of the two top plates (20) are respectively bonded with a cushion pad (21), the section length of each cushion pad (21) is consistent with that of each top plate (20), and the groove length of each cushion groove (17) is matched with that of each top plate (20).

5. The injection mold secondary core-pulling mechanism according to claim 1, characterized in that: and one end of the locking screw rod (19) positioned outside the upper core-pulling block (13) is also fixedly provided with a screwing rod, and the two sides of the screwing rod are both provided with arc grooves.