CN216941635U

CN216941635U - Display screen support injection mold with secondary ejecting device

Info

Publication number: CN216941635U
Application number: CN202220340786.1U
Authority: CN
Inventors: 张红武
Original assignee: Chuzhou Pinjie Molding Co ltd
Current assignee: Chuzhou Pinjie Molding Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-07-12
Anticipated expiration: 2032-02-18

Abstract

The utility model relates to the technical field of injection molds and discloses a display screen support injection mold with a secondary ejection device. When the injection molding machine is used, after injection molding is completed, the driving motor is started to drive the threaded rod to rotate, the pushing block is driven to slowly move upwards in the movable cavity, the four telescopic rods are caused to firstly push the four embedded blocks upwards to move upwards, so that the purpose of ejecting four corners of an injection molding piece for the first time is achieved, then the threaded holes in the pushing block are contacted with the embedded blocks in the embedded grooves for the second time along with the continuous movement of the pushing block, the threaded holes are upwards extruded, the effect of ejecting the injection molding piece for the second time in the central position is achieved, demolding is more comprehensive, and the completeness of the injection molding piece is favorably maintained.

Description

Display screen support injection mold with secondary ejection device

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold for a display screen bracket with a secondary ejection device.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

The existing injection mold has the phenomenon of inconvenient demolding after injecting a molten material and cooling, and an injection molding piece is easy to damage and has higher rejection rate. Therefore, the display screen bracket injection mold with the secondary ejection device is provided.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

Aiming at the defects of the prior art, the utility model provides the display screen bracket injection mold with the secondary ejection device, and solves the problems.

Technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a display screen support injection mold with secondary ejecting device, includes lower mould and last mould, be provided with on the lower mould with the last mould of lower mould looks adaptation, the last wall central point department of lower mould has seted up mould benevolence, embedded groove one, four have all been seted up to four corners in the inside of mould benevolence embedded groove one the equal movable joint in inside of embedded groove one has embedded piece one, embedded groove two has been seted up to the inside central point department of mould benevolence, the inside movable joint of embedded groove two has embedded piece two, movable cavity has been seted up to the inside of lower mould, movable cavity's inside is provided with ejecting device many times.

Preferably, the multiple ejection device comprises a driving motor, a pushing block, a telescopic rod and a first spring, the driving motor is fixedly installed at the position, corresponding to the second embedded groove, of the inner bottom surface of the movable cavity, a threaded rod is fixedly connected to an output shaft on the driving motor, the pushing block for pushing the first embedded groove is arranged in the driving motor, the pushing block is cross-shaped, four corners of the pushing block respectively correspond to the first embedded groove and the fourth embedded groove vertically, a threaded hole is formed in the central point of the pushing block, the pushing block is in threaded connection with the threaded rod on the driving motor through the threaded hole, the four telescopic rods are fixedly installed at the position, corresponding to the first embedded groove, of the upper wall surface of the pushing block, the tops of movable ends of the four telescopic rods extend upwards to penetrate through the inner part of the first embedded groove and fixedly connect with the lower wall surface of the first embedded groove, and the four telescopic rods are respectively sleeved with a first spring, and the upper end and the lower end of the first spring are respectively fixedly connected with the lower wall surface of the corresponding first embedded block and the upper wall surface of the pushing block.

Preferably, the inner wall surface of the movable cavity corresponds to four side wall surfaces of the pushing block and is provided with a limiting groove, the four side wall surfaces of the pushing block are fixedly provided with limiting blocks, and the limiting blocks are movably clamped inside the corresponding limiting grooves.

Preferably, the multiple ejection device further comprises a threaded hole, the upper wall surface of the pushing block is fixedly provided with a threaded hole corresponding to the position of the embedded groove II, and the threaded hole is a circular ring-shaped block.

Preferably, the cross section of embedded groove two and embedded piece two is the T font, just the inside cavity region of two intercommunication activity cavitys of embedded groove, just embedded piece two corresponds from top to bottom with the screw hole, the constant head tank has been seted up to the internal face of embedded groove two, the position fixed mounting that the outer wall of embedded piece two corresponds the constant head tank has the holding ring, the inside at the constant head tank is connected in the holding ring activity joint, wall fixed mounting has spring two on the inside of constant head tank, the lower extreme of spring two and the last wall fixed connection of holding ring.

Preferably, the upper wall surface of the lower die is provided with two clamping grooves, the lower wall surface of the upper die is fixedly provided with a clamping block at a position corresponding to the two clamping grooves on the lower die, and the shape and size of the clamping block are matched with the inner shape and size of the clamping grooves.

Advantageous effects

Compared with the prior art, the utility model provides a display screen bracket injection mold with a secondary ejection device, which has the following beneficial effects:

(1) when using, after the completion of moulding plastics, start driving motor drives the threaded rod and rotate, drive and promote the slow rebound in the inside of activity cavity of piece, lead to four telescopic links at first upwards to promote four embedded pieces one rebound, thereby reach and carry out ejecting for the first time to four corners of injection molding, then along with promoting the continuous removal of piece and promote the screw hole on the piece and the embedded piece two-phase contact of embedded groove two insides, and upwards extrude the screw hole, reach and carry out ejecting effect of secondary to the central point department of injection molding, make the drawing of patterns more comprehensive, be favorable to keeping the integrality of injection molding.

(2) Because the movable joint of the second embedded block is arranged in the second embedded groove locating slot, and meanwhile, the second spring which is in contact with the locating ring is arranged in the second embedded groove locating slot, the second embedded block can enter the second embedded groove under the action of the elastic force of the second spring again along with the descending of the pushing block after the injection molding piece is ejected out, and the subsequent repeated use of the equipment is facilitated.

(3) When the injection molding machine is used, the lower die and the upper die can be closed accurately and stably by mutually matching the two clamping grooves on the lower die and the two clamping blocks on the upper die.

Drawings

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

FIG. 2 is a top view of the pusher block of the present invention;

FIG. 3 is an enlarged view of the area A of FIG. 1 according to the present invention.

In the figure: 1. a lower die; 2. an upper die; 3. a mold core; 4. a card slot; 5. a clamping block; 6. a first embedding groove; 7. embedding a first block; 8. a movable cavity; 9. a drive motor; 10. a pushing block; 11. a threaded hole; 12. a telescopic rod; 13. a first spring; 14. a limiting groove; 15. a limiting block; 16. a second embedded groove; 17. embedding a second block; 18. a push ring; 19. positioning a groove; 20. a positioning ring; 21. and a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1-3, a display screen support injection mold with secondary ejection device, comprising a lower mold 1 and an upper mold 2, wherein the lower mold 1 is provided with the upper mold 2 matched with the lower mold 1, the upper wall center point of the lower mold 1 is provided with a mold core 3, four corners inside the mold core 3 are provided with first embedded grooves 6, the first embedded grooves 6 are movably clamped inside the first embedded grooves 7, the second embedded grooves 16 are arranged at the inner center point of the mold core 3, the second embedded grooves 16 are movably clamped inside the second embedded grooves 17, a movable cavity 8 is arranged inside the lower mold 1, and the multiple ejection device is arranged inside the movable cavity 8.

Multiple ejection device includes driving motor 9, promote piece 10, telescopic link 12 and spring 13, the fixed position that the inside bottom surface of activity cavity 8 corresponds embedded groove two 16 installs driving motor 9, output shaft fixedly connected with threaded rod on driving motor 9, driving motor 9's inside is provided with and is used for promoting the promotion piece 10 of four embedded pieces one 7, promote piece 10 to be the cross, and promote four corners of piece 10 and correspond about four embedded pieces one 7 respectively, promote the central point department and seted up threaded hole 11 on piece 10, the internal face of threaded hole 11 is seted up with the screw thread of the threaded rod looks adaptation on driving motor 9, promote piece 10 and threaded rod threaded connection on driving motor 9 through threaded hole 11, the fixed position that the upper wall face of promotion piece 10 corresponds four embedded pieces one 7 installs four telescopic links 12, and the expansion end top of four telescopic links 12 all upwards extends to run through and reach the inside that corresponds embedded groove one 6 and correspond the fixed lower wall face of embedded piece one 7 Connect, all cup jointed spring one 13 on four telescopic links 12, the upper and lower both ends of spring one 13 respectively with correspond the lower wall face of embedding piece one 7 and promote the last wall fixed connection of piece 10, receive telescopic link 12's direction influence spring one 13 can not go out the deformation or skew during the use, improved spring one 13's life.

The internal face of activity cavity 8 corresponds the four lateral wall faces department that promotes piece 10 and has all seted up spacing groove 14, promotes the equal fixed mounting of four lateral wall faces of piece 10 and has stopper 15, and stopper 15 activity joint is in the inside that corresponds spacing groove 14. When the push block is used, the four limiting blocks 15 can limit the position of the push block 10, and the push block 10 is prevented from rotating along with a threaded rod on the driving motor 9.

The multiple-ejection device further comprises a threaded hole 11, the upper wall surface of the pushing block 10 is fixedly provided with the threaded hole 11 corresponding to the position of the embedded groove II 16, and the threaded hole 11 is a circular ring-shaped block.

The cross section of the second embedded groove 16 and the second embedded block 17 is T-shaped, the second embedded groove 16 is communicated with the inner hollow area of the movable cavity 8, the second embedded block 17 vertically corresponds to the threaded hole 11, the positioning groove 19 is formed in the inner wall surface of the second embedded groove 16, the positioning ring 20 is fixedly mounted at the position, corresponding to the positioning groove 19, of the outer wall surface of the second embedded block 17, the positioning ring 20 is movably clamped inside the positioning groove 19, the second spring 21 is fixedly mounted on the inner upper wall surface of the positioning groove 19, and the lower end of the second spring 21 is fixedly connected with the upper wall surface of the positioning ring 20.

Two clamping grooves 4 are formed in the upper wall surface of the lower die 1, clamping blocks 5 are fixedly installed on the lower wall surface of the upper die 2 corresponding to the positions of the two clamping grooves 4 in the lower die 1, and the shape and the size of each clamping block 5 are matched with the shape and the size of the inner portion of each clamping groove 4.

Principle of operation

When the injection molding machine is used, after injection molding is completed, the driving motor 9 is started to drive the threaded rod to rotate, the driving pushing block 10 is driven to slowly move upwards in the movable cavity 8, four telescopic rods 12 are caused to firstly upwards push four embedded blocks I7 to upwards move, so that ejection for the first time of four corners of an injection molding piece is achieved, then the threaded holes 11 in the pushing block 10 are contacted with the embedded blocks II 17 in the embedded grooves II 16 along with continuous movement of the pushing block 10, the threaded holes 11 are upwards extruded, the effect of secondary ejection of the central position of the injection molding piece is achieved, demolding is more comprehensive, and completeness of the injection molding piece is favorably kept.

Because the positioning ring 20 on the second embedded block 17 is movably clamped inside the positioning groove 19 on the second embedded groove 16, and meanwhile, the second spring 21 in contact with the positioning ring 20 is arranged inside the positioning groove 19, after the injection molding piece is ejected out, the second embedded block 17 can enter the second embedded groove 16 again under the action of the elastic force of the second spring 21 along with the descending of the pushing block 10, and therefore the subsequent multiple use of the device is facilitated.

Can mutually support through two draw-in grooves 4 on the lower mould 1 and two fixture blocks 5 on the last mould 2 when using, improve the closed precision and the stability of lower mould 1 and last mould 2 when moulding plastics.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a display screen support injection mold with secondary ejecting device, includes lower mould (1) and last mould (2), be provided with on lower mould (1) with last mould (2) of lower mould (1) looks adaptation, mould benevolence (3), its characterized in that have been seted up to the last wall central point department of lower mould (1): embedded groove (6) have all been seted up to four corners in the inside of mould benevolence (3), four the inside equal movable joint of embedded groove (6) has embedded piece (7), embedded groove two (16) have been seted up to the inside centre point department of mould benevolence (3), the inside movable joint of embedded groove two (16) has embedded piece two (17), movable cavity (8) have been seted up to the inside of lower mould (1), the inside of activity cavity (8) is provided with ejecting device many times.

2. The display screen bracket injection mold with the secondary ejection device as claimed in claim 1, wherein: the multiple ejection device comprises a driving motor (9), a pushing block (10), telescopic rods (12) and a first spring (13), wherein the driving motor (9) is fixedly installed at the position, corresponding to the second embedded groove (16), of the inner bottom surface of the movable cavity (8), a threaded rod is fixedly connected to an output shaft on the driving motor (9), the pushing block (10) which is used for pushing the first four embedded blocks (7) is arranged inside the driving motor (9), the pushing block (10) is cross-shaped, four corners of the pushing block (10) respectively correspond to the first four embedded blocks (7) up and down, a threaded hole (11) is formed in the upper central point of the pushing block (10), the pushing block (10) is in threaded connection with the upper threaded rod of the driving motor (9) through the threaded hole (11), and the four telescopic rods (12) are fixedly installed at the position, corresponding to the first four embedded blocks (7), of the upper wall surface of the pushing block (10), and four the expansion end top of telescopic link (12) all upwards extends to run through and reaches the inside of corresponding embedded groove one (6) and the lower wall fixed connection who corresponds embedded block one (7), four all cup jointed spring one (13) on telescopic link (12), the upper and lower both ends of spring one (13) respectively with the lower wall that corresponds embedded block one (7) and the last wall fixed connection who promotes piece (10).

3. The display screen bracket injection mold with the secondary ejection device as claimed in claim 2, wherein: limiting grooves (14) are formed in the positions, corresponding to the four side wall surfaces of the pushing block (10), of the inner wall surface of the movable cavity (8), limiting blocks (15) are fixedly mounted on the four side wall surfaces of the pushing block (10), and the limiting blocks (15) are movably clamped inside the corresponding limiting grooves (14).

4. The display screen bracket injection mold with the secondary ejection device as claimed in claim 3, wherein: the multiple ejection device further comprises a threaded hole (11), the position, corresponding to the second embedded groove (16), of the upper wall surface of the pushing block (10) is fixedly provided with the threaded hole (11), and the threaded hole (11) is a circular ring-shaped block.

5. The display screen bracket injection mold with the secondary ejection device as claimed in claim 4, wherein: the cross section of embedded groove two (16) and embedded piece two (17) is the T font, just the inside cavity region of embedded groove two (16) intercommunication activity cavity (8), just embedded piece two (17) corresponds from top to bottom with screw hole (11), constant head tank (19) have been seted up to the internal face of embedded groove two (16), the outer wall of embedded piece two (17) corresponds the position fixed mounting of constant head tank (19) and has holding ring (20), holding ring (20) activity joint is in the inside of constant head tank (19), wall fixed mounting has spring two (21) on the inside of constant head tank (19), the lower extreme of spring two (21) and the last wall fixed connection of holding ring (20).

6. The display screen bracket injection mold with the secondary ejection device as claimed in claim 1, wherein: two clamping grooves (4) are formed in the upper wall face of the lower die (1), clamping blocks (5) are fixedly mounted on the lower wall face of the upper die (2) corresponding to the positions of the two clamping grooves (4) in the lower die (1), and the shape and the size of each clamping block (5) are matched with the shape and the size of the inner portion of each clamping groove (4).