CN211221902U

CN211221902U - Injection mold pneumatically pushed out

Info

Publication number: CN211221902U
Application number: CN201921591766.6U
Authority: CN
Inventors: 南基学
Original assignee: Dongguan Yejia Electronic Technology Co ltd
Current assignee: Dongguan Yejia Electronic Technology Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-08-11
Anticipated expiration: 2029-09-24

Abstract

The utility model provides an injection mold of pneumatic release, including last mould assembly, lower mould assembly, it includes the roof, goes up the die pad board to go up the mould assembly, it is equipped with two recesses, every to go up the die pad board lower extreme the both sides of recess all are fixed with oblique guide pillar, lower mould assembly includes the lower bolster, the lower bolster upper end is equipped with the lug, every the lug both sides all are equipped with the spout, be equipped with the baffle in the spout, the baffle lean on to lug one end is equipped with a plurality of tooth's sockets, be equipped with oblique guide hole on the baffle, every all be equipped with the shoulder hole in the lug, be equipped with pneumatic subassembly in the shoulder hole, pneumatic subassembly is including the type of falling T pole. The utility model discloses an injection mold makes gaseous direct arrival goods bottom as the driving force through gas, because gaseous isobaric nature, the injection molding receives even ejecting force when can ensure the drawing of patterns to avoid the warpage phenomenon that arouses in the traditional demoulding mechanism.

Description

Injection mold pneumatically pushed out

Technical Field

The utility model relates to the technical field of mold, concretely relates to pneumatic injection mold who releases.

Background

The injection molding product is a common daily product, and is widely applied to the fields of household products, medical equipment, building materials, sports equipment and the like due to the advantages of light weight, high strength, good durability, strong assembly and the like. In the manufacturing process of injection molding products, plastic materials in a molten state are generally uniformly stirred by a screw extruder at a certain temperature, then injected into an injection mold, molded in a cavity of the injection mold, and cooled and solidified to obtain the molded injection molding products.

In the injection mold in the prior art, after the mold is opened, an electric cylinder is usually used for driving an ejector pin to eject out a plastic product, and because the ejector pin has large instantaneous thrust, the local part of an injection molding part receives increased ejection force, and the injection molding part is easy to have the defects of poor surface quality, warping and the like.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides an injection mold that pneumatic release through gaseous as the motive force, makes gaseous direct arrival goods bottom, because gaseous isobaric nature, the injection molding receives even ejecting force when can ensure the drawing of patterns to avoid the warpage phenomenon that arouses among the traditional demoulding mechanism.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides an injection mold that pneumatics was released, includes upper die assembly, lower die assembly, upper die assembly includes the upper die roof, is located go up the upper die backing plate of upper die roof downside and be located go up the upper die bottom plate of upper die backing plate downside, the upper die bottom plate lower extreme is equipped with two recesses, every the both sides of recess all are fixed with oblique guide pillar, lower die assembly includes the lower bolster, the lower bolster upper end is equipped with two lugs that correspond to the recess, every the lug both sides all are equipped with the spout, be equipped with the slidable baffle in the spout, the baffle leans on lug one end to be equipped with a plurality of tooth's sockets, still be equipped with on the baffle with oblique guide hole that oblique guide pillar assorted, every all be equipped with the shoulder hole in the lug, be equipped with pneumatic assembly in the shoulder hole, pneumatic assembly includes the pole of falling T type, connects the apron, And the spring is sleeved on the outer side of the inverted T-shaped rod, the lower end of the stepped hole is connected with a gas distribution pipe, and the lower ends of the two gas distribution pipes are connected with a main gas pipe together.

Specifically, be equipped with the sprue gate on going up the mould roof, the sprue gate lower extreme is connected with horizontal runner, horizontal runner both ends downside all is connected with 2 subchannels, the subchannel lower extreme with recess through connection.

Specifically, the shoulder hole includes first hole, connects the second hole of first hole upside, connects the third hole of second hole upside, the internal diameter of first hole is greater than the internal diameter of second hole, the internal diameter of second hole is greater than the internal diameter of third hole, the spring is located in the first hole.

Specifically, the lower template is further connected with a positioning column, and the upper die base plate is provided with a positioning hole which is matched with the positioning column in the axial direction.

Specifically, an air tap is further fixed on the outer side of the lower template and connected with the main air pipe.

The utility model has the advantages that:

the injection mold of the utility model has the advantages that the gas directly reaches the bottom of the product by taking the gas as a driving force, and the uniform ejection force of the injection molding part can be ensured during demolding due to the isostatic pressure of the gas, so that the buckling deformation phenomenon caused by the traditional demolding mechanism is avoided;

second, last bottom die plate have two recesses, can make 2 injection moldings simultaneously, and is efficient.

Drawings

Fig. 1 is a schematic structural view of the pneumatic injection mold of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

The reference signs are: the pneumatic component comprises an upper die top plate 11, an upper die base plate 12, an upper die bottom plate 13, a groove 131, an inclined guide post 132, a lower die plate 2, a bump 21, a sliding groove 22, a baffle 23, a tooth groove 231, a stepped hole 24, a first inner hole 241, a second inner hole 242, a third inner hole 243, a positioning column 25, a pneumatic component 3, an inverted T-shaped rod 31, a cover plate 32, a spring 33, a gas distribution pipe 41, a main gas pipe 42, a pouring gate 51, a transverse flow passage 52, a branch flow passage 53 and a gas nozzle 6.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1-2:

an injection mold pushed pneumatically comprises an upper mold component and a lower mold component, wherein the upper mold component comprises an upper mold plate 11, an upper mold base plate 12 positioned on the lower side of the upper mold plate 11, and an upper mold base plate 13 positioned on the lower side of the upper mold base plate 12, the lower end of the upper mold base plate 13 is provided with two grooves 131, two sides of each groove 131 are respectively fixed with an inclined guide pillar 132, the lower mold component comprises a lower mold plate 2, the upper end of the lower mold plate 2 is provided with two convex blocks 21 corresponding to the grooves 131, two sides of each convex block 21 are respectively provided with a sliding groove 22, a sliding baffle 23 is arranged in each sliding groove 22, one end of each baffle 23, close to each convex block 21, is provided with a plurality of tooth grooves 231, each convex block 21, each baffle 23 and the upper mold base plate 12 are matched to form a mold cavity, molten plastic slurry is injected into the mold cavity, an injection, the baffle 23 slides along the chute 22 in the direction far away from the bump 21, so that the baffle 23 is opened, the subsequent ejection and demolding operation can be performed only if the two sides of the injection molding part have no limiting effect, a stepped hole 24 is formed in each bump 21, a pneumatic assembly 3 is arranged in each stepped hole 24, each pneumatic assembly 3 comprises an inverted T-shaped rod 31, an inverted frustum-shaped cover plate 32 connected to the top end of the inverted T-shaped rod 31, and a spring 33 sleeved on the outer side of the inverted T-shaped rod 31, the lower end of each stepped hole 24 is connected with a gas distribution pipe 41, the lower ends of the two gas distribution pipes 41 are connected with a main gas pipe 42 together, and after the mold is opened, gas can be continuously, under the thrust of gas, the pneumatic component 3 is ejected upwards, the gas directly reaches the bottom of the injection molding part through a gap between the pneumatic component 3 and the stepped hole 24, due to the equal pressure of the gas, the injection molding part can be ensured to be subjected to uniform ejection force during demolding, so that the phenomenon of warping deformation caused in the traditional demolding mechanism is avoided.

Preferably, a pouring gate 51 is arranged on the upper die top plate 11, the pouring gate 51 can be connected to a discharge port of the screw extruder, so that molten plastic slurry enters from the pouring gate 51, a transverse flow channel 52 is connected to the lower end of the pouring gate 51, 2 branch flow channels 53 are connected to the lower sides of both ends of the transverse flow channel 52, and the lower ends of the branch flow channels 53 are in through connection with the grooves 131.

Preferably, the stepped hole 24 includes a first inner hole 241, a second inner hole 242 connected to an upper side of the first inner hole 241, and a third inner hole 243 connected to an upper side of the second inner hole 242, the first inner hole 241 having an inner diameter larger than that of the second inner hole 242, the second inner hole 242 having an inner diameter larger than that of the third inner hole 243, and the spring 33 being located in the first inner hole 241.

Preferably, the lower template 2 is further connected with a positioning column 25, and the upper mold base plate 13 is provided with a positioning hole matched with the positioning column 25 in the direction.

Preferably, an air nozzle 6 is further fixed on the outer side of the lower template 2, and the air nozzle 6 is connected with the main air pipe 42.

The above embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The pneumatic push-out injection mold comprises an upper mold component and a lower mold component, and is characterized in that the upper mold component comprises an upper mold top plate (11), an upper mold base plate (12) positioned on the lower side of the upper mold top plate (11) and an upper mold base plate (13) positioned on the lower side of the upper mold base plate (12), two grooves (131) are formed in the lower end of the upper mold base plate (13), oblique guide pillars (132) are fixed on two sides of each groove (131), the lower mold component comprises a lower mold plate (2), two convex blocks (21) corresponding to the grooves (131) are arranged at the upper end of the lower mold plate (2), sliding grooves (22) are formed in two sides of each convex block (21), a slidable baffle (23) is arranged in each sliding groove (22), a plurality of tooth grooves (231) are formed in one end, close to the convex blocks (21), of the baffle (23), and oblique guide holes matched with the oblique guide pillars (, every all be equipped with shoulder hole (24) in lug (21), be equipped with pneumatic component (3) in shoulder hole (24), pneumatic component (3) are including falling T type pole (31), connect and establish apron (32) and the cover of falling the round platform form on T type pole (31) top fall spring (33) in the T type pole (31) outside, shoulder hole (24) lower extreme is connected with gas-distributing pipe (41), two gas-distributing pipe (41) lower extreme is connected with main trachea (42) jointly.

2. The pneumatic push-out injection mold according to claim 1, wherein a pouring gate (51) is arranged on the upper mold top plate (11), a transverse flow channel (52) is connected to the lower end of the pouring gate (51), 2 branch flow channels (53) are connected to the lower sides of both ends of the transverse flow channel (52), and the lower ends of the branch flow channels (53) are in through connection with the grooves (131).

3. A pneumatic push-out injection mold as claimed in claim 1, wherein the stepped hole (24) comprises a first inner hole (241), a second inner hole (242) connected to an upper side of the first inner hole (241), and a third inner hole (243) connected to an upper side of the second inner hole (242), wherein an inner diameter of the first inner hole (241) is larger than an inner diameter of the second inner hole (242), an inner diameter of the second inner hole (242) is larger than an inner diameter of the third inner hole (243), and the spring (33) is located in the first inner hole (241).

4. The pneumatic push-out injection mold according to claim 1, wherein the lower mold plate (2) is further connected with a positioning column (25), and the upper mold base plate (13) is provided with a positioning hole which is matched with the positioning column (25) in the direction.

5. The pneumatic ejection injection mold according to claim 1, wherein an air tap (6) is further fixed on the outer side of the lower template (2), and the air tap (6) is connected with the main air pipe (42).