CN218366151U - Injection molding device - Google Patents

Abstract

The application discloses injection molding device, be used for injection molding product, the product includes first work piece, first work piece has the arc concave part, including first mould, the second mould, injection molding and loose core subassembly, first mould includes first shaping portion, the second mould includes second shaping portion, first mould laminating second mould is in order to form first molding cavity, the subassembly of loosing core includes the pivot, slider and the piece of loosing core, first mould is connected in the pivot, the pivot is connected to the slider and the piece of loosing core, the piece of loosing core drives the relative pivot of slider and rotates, make the slider at least part locate first molding cavity and laminate first shaping portion, injection molding becomes first work piece in first molding cavity, the piece of loosing core still drives the slider and keeps away from first molding cavity, make the slider break away from in the arc concave part. The injection molding device can improve the demolding speed of the product, and further improve the production efficiency.

Description

Injection molding device

Technical Field

The application relates to the field of product processing, in particular to an injection molding device.

Background

When a product with the characteristic of an arc-shaped bent pipe is injected, a detachable insert is usually adopted, the insert is connected with a mold core of a mold, after injection molding, the insert and the product are ejected together, then the insert is manually detached by workers, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an injection molding apparatus, which can improve the production efficiency.

The embodiment of the application provides an injection molding device for injection molding, the product includes first work piece, first work piece has the arc concave part, include first mould, second mould, injection molding and loose core subassembly, first mould includes first shaping portion, the second mould includes second shaping portion, first mould laminating the second mould is in order to form first shaping chamber, the subassembly of loosing core includes pivot, slider and the piece of loosing core, the pivot is connected first mould, the slider is connected pivot and the piece of loosing core, the piece of loosing core drives the slider is relative the pivot rotates, makes the slider is at least partially located first shaping intracavity and laminating first shaping portion, the injection molding is in injection molding in the first shaping chamber becomes first work piece, the piece of loosing core still drives the slider is kept away from first shaping chamber makes the slider follows break away from in the arc concave part.

The embodiment of the application comprises the following technical effects: the first molding cavity is formed by the first molding part and the second molding part, the core pulling block drives the sliding part to rotate relative to the rotating shaft, the sliding part is arranged in the first molding cavity and attached to the first molding part, the first workpiece is injected and molded in the first molding cavity through the injection molding part, the sliding part is driven to be away from the first molding cavity in the opposite direction through the core pulling block, the sliding part is separated from the arc-shaped concave part, the demolding speed of a product can be improved, and the production efficiency is further improved.

Optionally, in some embodiments of this application, the subassembly of loosing core still includes elastic component and ejector pad, the elastic component with the ejector pad is located loose core the piece, the elastic component support hold the inner wall of core piece with the ejector pad, the ejector pad deviates from one side contact connection of elastic component the slider, elastic component elasticity supports hold the ejector pad, makes the ejector pad promote the slider laminate in first shaping portion makes the slider closely laminate on first arcwall face to make the position of slider remove and target in place, promote the quality of the product of moulding plastics.

Optionally, in some embodiments of this application, the piece of loosing core has and holds the chamber, the ejector pad includes the ejector pad main part and connects the extension board of ejector pad main part, the ejector pad main part slides and locates hold the chamber and with the internal surface that holds the chamber all contacts and is connected, the extension board contact is connected the slider can promote the ejector pad main part and hold the stability of intracavity removal.

Optionally, in some embodiments of the present application, the sliding member includes a sliding body and a rotating rod, both of which are rotatably connected to the rotating shaft, the sliding body is further connected to the rotating rod, and the rotating rod is in contact connection with the core block and the push block.

Optionally, in some embodiments of the present application, the sliding body has a groove, and a side of the rotating rod connected to the sliding body is provided with a convex portion, and the convex portion is provided in the groove.

Optionally, in some embodiments of the present application, the apparatus further includes a driving block, the driving block has a first inclined surface, the first die is slidably connected to the first inclined surface, and the driving block drives the first die to move in a direction away from the second die, so that the first die is separated from the first workpiece.

Optionally, in some embodiments of the present application, the mold further includes a third mold, the driving block further has a second inclined surface, the third mold is slidably connected to the second inclined surface, and the driving block drives the first mold and the third mold to move toward or away from each other.

Optionally, in some embodiments of the present application, the product further includes a second workpiece, the first workpiece is connected to the second workpiece through injection molding, the sliding member includes a first sliding block and a second sliding block, the first sliding block is disposed in the first molding cavity, and the second sliding block extends out of the first molding cavity and can be in contact with the second workpiece.

Optionally, in some embodiments of the present application, the injection molding device further includes an ejector rod, the ejector rod is configured to be disposed below the second workpiece, and the product is ejected after the first workpiece is injection-molded to connect with the second workpiece.

Optionally, in some embodiments of the present application, the first forming portion has a first arc-shaped surface, and one side of the sliding portion facing the first forming portion has a second arc-shaped surface, and the first arc-shaped surface fits the second arc-shaped surface.

Drawings

FIG. 1 is a schematic view showing the structure of an injection molding apparatus according to an embodiment.

Fig. 2 shows a schematic structural diagram of a product in an embodiment.

FIG. 3 is an exploded view of an injection molding apparatus according to one embodiment.

FIG. 4 is an exploded view of the first mold, the second mold and the core back assembly in one embodiment.

FIG. 5 is an exploded view of the first mold, the second mold and the core back assembly from another perspective in one embodiment.

FIG. 6 is a schematic view of the core back assembly away from the first mold in one embodiment.

Fig. 7 illustrates an exploded view of the first mold and core back assembly in one embodiment.

FIG. 8 is a schematic diagram of the structure of the rotating shaft and the sliding member in one embodiment.

FIG. 9 is a schematic cross-sectional view along IX-IX of the first mold and core back assembly in one embodiment.

Description of the main elements

Injection molding apparatus 100

First molding cavity 100a

Second molding cavity 100b

First mold 10

Accommodating space 10a

First molding part 11

Notch 111

First arc-shaped surface 111a

Opening 12

Mounting hole 13

Second mold 20

Second molding part 21

Core pulling assembly 30

Rotating shaft 31

Slide 32

Sliding body 321

Second arc-shaped face 321a

First slider 3211

Second slider 3212

Groove 3213

Rotating rod 322

Convex part 3221

Core-pulling block 33

Accommodating chamber 33a

Elastic member 34

Push block 35

Push block body 351

Extension plate 352

Injection molding 40

Third mold 50

Fourth mold 60

Drive block 70

First inclined plane 71

Second inclined surface 72

Ejector pin 80

Product 200

First workpiece 201

Arc-shaped concave part 201a

Second workpiece 202

Barb 202a

Surface 2021

The following specific examples will further illustrate the application in conjunction with the above figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides an injection molding device, be used for injection molding product, the product includes first work piece, first work piece has the arc concave part, including first mould, the second mould, the injection molding and the subassembly of loosing core, first mould includes first shaping portion, the second mould includes second shaping portion, first mould laminating second mould is in order to form first molding cavity, the subassembly of loosing core includes the pivot, the slider and the piece of loosing core, first mould is connected in the pivot, the slider is connected the pivot and is loosed the core piece, it drives the relative pivot rotation of slider to loose core the piece, make the slider at least partially locate first molding cavity and laminate first shaping portion, the injection molding is moulded into first work piece in first molding cavity, it still drives the slider and keeps away from first molding cavity to loose core the piece, make the slider break away from in the arc concave part.

The first molding cavity is formed by the first molding part and the second molding part, the core pulling block drives the sliding part to rotate relative to the rotating shaft, the sliding part is arranged in the first molding cavity and attached to the first molding part, the first workpiece is injected and molded in the first molding cavity through the injection molding part, the sliding part is driven to be away from the first molding cavity in the opposite direction through the core pulling block, the sliding part is separated from the arc-shaped concave part, the demolding speed of a product can be improved, and the production efficiency is further improved.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, an injection molding apparatus 100 is used to injection mold a product 200. The product 200 includes a first workpiece 201, the first workpiece 201 is an arc-shaped elbow structure, and the first workpiece 201 has an arc-shaped concave portion 201a. In one embodiment, the product 200 further includes a second workpiece 202, and the first workpiece 201 is integrally formed with the second workpiece 202. In one embodiment, the first workpiece 201 is provided in two. It is understood that the elements of the injection molded second workpiece 202 are not shown in the figures.

Referring to fig. 1 and 3, the injection molding apparatus 100 includes a first mold 10, a second mold 20, a core back assembly 30, and an injection molding member 40. The first mold 10 is coupled to the second mold 20 and forms a first molding cavity 100a. During injection molding, at least part of the core pulling assembly 30 is arranged in the first molding cavity 100a, and the core pulling assembly 30 is connected with the first mold 10 and/or the second mold 20 to form an arc-shaped concave portion 201a on the first workpiece 201 after the first molding cavity 100a is subjected to injection molding by matching with the injection molding piece 40. The core pulling assembly 30 can automatically get away from the first molding cavity 100a and be separated from the arc-shaped concave part 201a, manual stripping is not needed, and production efficiency is improved. It is understood that the first mold 10, the second mold 20, the injection molded part 40 and the core back assembly 30 are individually provided with a driving member (not shown), such as an air cylinder, for driving the first mold 10, the second mold 20, the injection molded part 40 and the core back assembly 30 to move.

Referring to fig. 4, 5 and 6, the first mold 10 includes a first molding portion 11, the second mold 20 includes a second molding portion 21, and when injection molding is required, the driving member drives the second mold 20 to move, and the second mold 20 is attached to the first mold 10, so that the first molding portion 11 and the second molding portion 21 cooperate to form a first molding cavity 100a. In one embodiment, the first forming portion 11 has a convex structure, and the second forming portion 21 has a concave structure. The first molding part 11 has a notch 111, and the core pulling assembly 30 is disposed at the notch 111, so that the first molding part 11 presents a complete convex structure. In one embodiment, the notch 111 has a first curved surface 111a, and the core back assembly 30 is slidably connected to the first curved surface 111a. Optionally, the first arc-shaped surface 111a has a stepped structure, and may be matched with the core back assembly 30 to improve the stability of the core back assembly 30 sliding on the first arc-shaped surface 111a. In an embodiment, the first mold 10 is provided with an accommodating space 10a therein, the first mold 10 is further provided with an opening 12, the opening 12 is communicated with the accommodating space 10a, and the core back assembly 30 is partially disposed in the accommodating space 10a and extends out from the opening 12 to connect with the first arc-shaped surface 111a.

Referring to fig. 7, 8 and 9, the core back assembly 30 includes a rotating shaft 31, a sliding member 32 and a core back block 33, the rotating shaft 31 is connected to the first mold 10 and disposed in the accommodating space 10a, the sliding member 32 is connected to the rotating shaft 31 and the core back block 33, and the sliding member 32 is further disposed in the notch 111. The core-pulling block 33 can drive the sliding part 32 to rotate relative to the rotating shaft 31 along the first direction, and when injection molding is needed, the sliding part 32 extends into the first molding cavity 100a and is attached to the first arc-shaped surface 111 a; after the injection molding is completed, the core back block 33 may drive the sliding member 32 to rotate relative to the rotating shaft 31 in a direction opposite to the first direction, so that the sliding member 32 is withdrawn from the first molding cavity 100a and separated from the arc-shaped recess 201a.

In an embodiment, the first mold 10 is further provided with a mounting hole 13, the mounting hole 13 communicates with the accommodating space 10a, and the rotating shaft 31 is disposed in the mounting hole 13 to fixedly connect the first mold 10.

In an embodiment, the sliding member 32 includes a sliding body 321 and a rotating rod 322, the sliding body 321 and the rotating rod 322 are both sleeved and connected to the rotating shaft 31, the sliding body 321 is connected to the rotating rod 322, and an end of the rotating rod 322 far away from the sliding body 321 is connected to the core block 33. The rotating rod 322 is driven by the core-pulling block 33 to rotate, and then the rotating rod 322 drives the sliding body 321 to rotate, so that the sliding body 321 is attached to the first molding part 11 or away from the first molding cavity 100a. The sliding main body 321 is disposed in the notch 111, a second arc-shaped surface 321a is disposed on one side of the sliding main body 321 facing the first forming portion 11, the second arc-shaped surface 321a is in contact connection with the first arc-shaped surface 111a, and the second arc-shaped surface 321a is attached to the first arc-shaped surface 111a. The sliding body 321 includes a first sliding block 3211 and a second sliding block 3212, which are integrally formed, and the first sliding block 3211 is disposed in the first molding cavity 100a for molding the arc-shaped recess 201a during injection molding. The second sliding block 3212 is located outside the first molding cavity 100a and is used for contacting and connecting the second workpiece 202. In one embodiment, the second slider 3212 has a curved surface that matches the surface of the second workpiece 202.

Referring to fig. 2 and fig. 3, in an embodiment, the surface 2021 of the second workpiece 202 is provided with barbs 202a, and the barbs 202a are located in the extending direction of the arc-shaped concave portion 201a. The sliding body 321 rotates in the direction opposite to the first direction, that is, when the sliding body rotates in the direction away from the surface 2021, the sliding body has a tendency of moving downward, so that the sliding body 321 can effectively avoid the barb 202a, and the sliding body 321 is prevented from being blocked by the barb 202a and clamped in the arc-shaped recess 201a.

Referring to fig. 7, 8 and 9, in an embodiment, a groove 3213 is disposed on one side of the sliding body 321 opposite to the rotating rod 322, a protruding portion 3221 is disposed on one side of the rotating rod 322 opposite to the sliding body 321, and the protruding portion 3221 is disposed in the groove 3213, so that the sliding body 321 can be driven to rotate by the rotation of the rotating rod 322.

In an embodiment, the core back block 33 has an accommodating cavity 33a, one end of the rotating rod 322 far away from the sliding body 321 is disposed in the accommodating cavity 33a, and the core back block 33 moves along the vertical direction, so that the inner wall of the core back block 33 presses or lifts one end of the rotating rod 322 far away from the sliding body 321, and further drives the rotating rod 322 to rotate.

In an embodiment, the core back assembly 30 further includes an elastic member 34 and a pushing block 35, and the elastic member 34 and the pushing block 35 are disposed in the accommodating cavity 33 a. One end of the elastic member 34 abuts against the inner wall of the accommodating cavity 33a, and the other end abuts against the push block 35. The side of the push block 35 facing away from the elastic member 34 contacts the end of the connecting rotating rod 322 facing away from the sliding body 321. After the core pulling block 33 drives the sliding member 32 to attach to the first arc-shaped surface 111a, the pushing block 35 is pushed by the elastic force of the elastic member 34 to move in the accommodating cavity 33a, and further the rotating rod 322 is pushed to rotate along the first direction relative to the rotating shaft 31, so that the sliding member 32 is closely attached to the first arc-shaped surface 111a, the position of the sliding member 32 can be moved in place, and the quality of the injection molded product 200 is improved. It will be appreciated that when the core block 33 carries the slide member 32 away from the first molding cavity 100a, the rotating rod 322 presses the push block 35, and the push block 35 compresses the elastic member 34.

In an embodiment, the push block 35 includes a push block main body 351 and an extension plate 352, and the extension plate 352 is formed by extending a side of the push block main body 351 facing away from the elastic member 34 to a direction approaching the rotation lever 322. The push block body 351 is slidably disposed in the accommodating cavity 33 a. The side surface of the push block body 351 is in contact connection with the inner surface of the accommodating cavity 33a, so that the stability of the push block body 351 moving in the accommodating cavity 33a can be improved. The extending plate 352 contacts with an end of the rotating rod 322 far from the sliding body 321, and the elastic member 34 can push the push block body 351 to move in the accommodating cavity 33a, so that the extending plate 352 lifts the rotating rod 322 to drive the rotating rod 322 to rotate along the first direction relative to the rotating shaft 31.

Referring to fig. 1 and fig. 3, in an embodiment, the injection molding apparatus 100 further includes a third mold 50 and a fourth mold 60, the third mold 50 and the fourth mold 60 are connected to the corresponding core pulling assemblies 30, and the third mold 50 and the fourth mold 60 are attached to form a second molding cavity 100b for molding another first workpiece 201. In an embodiment, the third mold 50 has the same structure as the first mold 10, the fourth mold 60 has the same structure as the second mold 20, and the first workpiece 201 can be molded in the other of the second workpieces 202 through the second molding cavity 100 b.

In an embodiment, the injection molding apparatus 100 further includes a driving block 70, the driving block 70 has a first inclined surface 71, the first mold 10 has an inclined surface corresponding to the first inclined surface 71, and the first inclined surface 71 is slidably connected to the first mold 10. The driving block 70 moves in the vertical direction to drive the first mold 10 to move closer to or away from the second mold 20 in the horizontal direction. Before injection molding, when the first mold 10 is close to the second mold 20, the first mold 10 and the second mold 20 are attached to form a first molding cavity 100a. When the injection molding is completed, the first mold 10 is moved away from the second mold 20, so that the first mold 10 is separated from the first workpiece 201.

In one embodiment, the driving block 70 further has a second bevel 72, the third mold 50 has a bevel corresponding to the second bevel 72, and the second bevel 72 is slidably connected to the third mold 50. The driving block 70 may simultaneously drive the first mold 10 and the third mold 50 to move. Specifically, when the driving block 70 moves downward in the vertical direction, the first mold 10 and the third mold 50 move toward each other, that is, the first mold 10 is away from the second mold 20, and the third mold 50 is away from the fourth mold 60. When the driving block 70 moves upward in the vertical direction, the first mold 10 and the third mold 50 move away from each other, i.e., the first mold 10 fits the second mold 20, and the third mold 50 fits the fourth mold 60.

In an embodiment, the injection molding apparatus 100 further includes an ejector rod 80, the ejector rod 80 is disposed below the second workpiece 202, and when the injection molding is completed, that is, after the first workpiece 201 is connected to the second workpiece 202, the ejector rod 80 moves upward along the vertical direction to eject the product 200.

It will be appreciated that the third die 50, the fourth die 60, the drive block 70 and the ejector rod 80 are each provided with a drive member (not shown), such as an air cylinder, alone for driving the third die 50, the fourth die 60, the drive block 70 and the ejector rod 80 to move.

When the injection molding device 100 is used, the driving block 70 moves upwards along the vertical direction to make the first mold 10 attach to the second mold 20 to form the first molding cavity 100a, the third mold 50 attach to the fourth mold 60 to form the second molding cavity 100b, then the injection molded part 40 moves to the injection port for injection molding, after the injection molding is completed, the second mold 20 moves away from the first mold 10, the fourth mold 60 moves away from the third mold 50, the injection molded part 40 moves away from the injection port, then the core-pulling block 33 moves downwards along the vertical direction to make the core-pulling block 33 contact with the rotating rod 322, the core-pulling block 33 continues to move downwards along the vertical direction to drive the rotating rod 322 to rotate relative to the rotating shaft 31 along the direction opposite to the first direction by a predetermined angle, so that the sliding main body 321 withdraws from the first molding cavity 100a and the second molding cavity 100b, and the sliding main body 321 is separated from the corresponding arc-shaped concave portion 201a, then the driving block 70 moves downwards along the vertical direction, the first mold 10 and the third mold 50 move towards the direction close to each other, so that the first mold 10 and the third mold 50 are separated from the corresponding first workpiece 201, then the ejector rod 80 ejects the product 200, then the driving block 70 moves upwards along the vertical direction, the first mold 10 and the third mold 50 move towards the direction away from each other, the first mold 10 and the third mold 50 are reset, then the core pulling block 33 moves upwards along the vertical direction, the pushing block 35 is pushed by the elasticity of the elastic piece 34 to move in the accommodating cavity 33a, further the rotating rod 322 is pushed to rotate relative to the rotating shaft 31 along the first direction, so that the sliding piece 32 is tightly attached to the first molding part 11, and after the core pulling block 33 moves upwards along the vertical direction and continues to move to the right position, the next round of injection molding operation can be performed.

The injection molding device 100 forms the first molding cavity 100a through the first molding part 11 and the second molding part 21, the core-pulling block 33 drives the sliding part 32 to rotate relative to the rotating shaft 31, so that the sliding part 32 is arranged in the first molding cavity 100a and attached to the first molding part 11, the injection molding part 40 is used for injection molding in the first molding cavity 100a to form the first workpiece 201, the core-pulling block 33 drives the sliding part 32 to be away from the first molding cavity 100a along the opposite direction, the sliding part 32 is separated from the arc-shaped concave part 201a, the demolding speed of the product 200 can be improved, and further the production efficiency is improved.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not to be taken as limiting the present application, and that suitable changes and modifications to the above embodiments are within the scope of the present disclosure as long as they are within the spirit and scope of the present application.

Claims (10)

1. An injection molding apparatus for injection molding a product comprising a first workpiece having an arcuate recess, comprising:

a first mold including a first molding portion;

the second mould comprises a second forming part, and the first mould is attached to the second mould to form a first forming cavity;

an injection molded part;

it is characterized in that the injection molding device further comprises:

the core pulling assembly comprises a rotating shaft, a sliding part and a core pulling block, the rotating shaft is connected with the first mold, the sliding part is connected with the rotating shaft and the core pulling block, the core pulling block drives the sliding part to rotate relative to the rotating shaft, at least part of the sliding part is arranged in the first molding cavity and attached to the first molding part, the injection molding part is injected and molded into the first molding cavity to form a first workpiece, the core pulling block further drives the sliding part to be far away from the first molding cavity, and the sliding part is separated from the arc-shaped concave part.

2. An injection molding device according to claim 1, wherein the core pulling assembly further comprises an elastic member and a pushing block, the elastic member and the pushing block are arranged in the core pulling block, the elastic member abuts against an inner wall of the core pulling block and the pushing block, one side of the pushing block, which is far away from the elastic member, is in contact connection with the sliding member, and the elastic member elastically abuts against the pushing block, so that the pushing block pushes the sliding member to be attached to the first molding portion.

3. An injection molding apparatus as claimed in claim 2, wherein said core block has a receiving cavity, said push block includes a push block body and an extension plate connected to said push block body, said push block body is slidably disposed in said receiving cavity and is in contact with both of the inner surfaces of said receiving cavity, and said extension plate is in contact with said slide.

4. An injection molding apparatus as claimed in claim 2, wherein said sliding member includes a sliding body and a rotating rod, both of which are rotatably connected to said rotating shaft, said sliding body further being connected to said rotating rod, said rotating rod being in contact connection with said core block and said push block.

5. An injection molding apparatus as claimed in claim 4, wherein said slide body has a recess, and wherein the side of said rotating lever connected to said slide body is provided with a protrusion, said protrusion being provided in said recess.

6. An injection molding apparatus as claimed in claim 1, further comprising a drive block, said drive block having a first ramp, said first mold being slidably coupled to said first ramp, said drive block moving said first mold away from said second mold to disengage said first mold from said first workpiece.

7. An injection molding apparatus as claimed in claim 6, further comprising a third mold, said drive block further having a second ramp, said third mold being slidably coupled to said second ramp, said drive block driving said first and third molds toward or away from each other.

8. An injection molding apparatus as claimed in claim 1, wherein said product further comprises a second workpiece, said first workpiece is joined to said second workpiece by injection molding, said slide member comprises a first slide block disposed in said first molding cavity and a second slide block extending out of said first molding cavity and capable of contacting said second workpiece.

9. An injection molding apparatus as claimed in claim 8, further comprising an ejector rod adapted to be positioned below said second workpiece to eject said product after said first workpiece is injection molded to said second workpiece.

10. The injection molding apparatus of claim 1, wherein the first mold portion has a first arcuate surface, and wherein a side of the slider facing the first mold portion has a second arcuate surface, the first arcuate surface abutting the second arcuate surface.

Images