CN216506463U

CN216506463U - Plastic shell injection mold

Info

Publication number: CN216506463U
Application number: CN202123125456.5U
Authority: CN
Inventors: 胡军; 何凤英
Original assignee: Dongguan Changrun Plastic Mould Technology Co ltd
Current assignee: Dongguan Changrun Plastic Mould Technology Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-13
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses an injection mold for a plastic shell, which aims to solve the technical problem that the existing injection mold is difficult to demold due to the fact that the structural section of the existing injection mold is thin when the existing injection mold is used for manufacturing the plastic shell. The injection mold comprises a lower mold body, an upper mold body arranged above the lower mold body, a first driving oil cylinder arranged at the lower end of the lower mold body, and a second driving oil cylinder arranged at the upper end of the upper mold body. This injection mold adopts the mode of the oil cylinder equipment subtend ejecting first ejection platform and second ejection platform of both sides about two sets of moulds, no matter the plastic shell adhesion can all be ejecting from the mould with the plastic shell after the shaping in last mould body or the bed die body, the manual work is avoided to the mode of automatic drawing of patterns and is forced the tractive plastic shell, make the structure receive the damage, horizontal plate structure is utilized to ejecting platform and second ejection platform, at the in-process of moulding plastics, the whole thickness of injection molding can be adjusted through the mode of freely going up and down.

Description

Plastic shell injection mold

Technical Field

The utility model belongs to the field of injection mold equipment, and particularly relates to an injection mold for a plastic shell.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. A processing method for mass production of plastic parts with complex shapes. Injecting the heated and melted plastic into the mold cavity at high pressure by an injection molding machine, and cooling and solidifying to finally obtain a formed product.

When the existing injection mold is used for manufacturing a shell type plastic workpiece with a thin structural body section, the workpiece is tightly attached to the mold after being subjected to thermoforming, so that the external traction force is inconvenient to apply to a certain point on the workpiece for demolding, and the shell with the thin structural body is easy to deform or crack in a forced traction manner, so that the design of a push-out type shell injection mold is needed, and the plastic shell is protected from being damaged in a planar uniform acting force applying manner.

Therefore, aiming at the condition that the plastic shell is easy to be damaged by forced pulling force during demoulding, a novel ejection type mould structure is developed, and the plastic shell is protected to be complete in shape by utilizing a mode that the whole injection molding flat cotton uniformly applies ejection acting force.

SUMMERY OF THE UTILITY MODEL

(1) Technical problem to be solved

The utility model aims to provide an injection mold for a plastic shell, aiming at solving the technical problem that the existing injection mold is difficult to demold due to a thinner structural section when the plastic shell is manufactured.

(2) Technical scheme

In order to solve the technical problem, the utility model provides an injection mold for a plastic shell, which comprises a lower mold body, an upper mold body arranged above the lower mold body, a first driving oil cylinder arranged at the lower end of the lower mold body, and a second driving oil cylinder arranged at the upper end of the upper mold body, wherein a forming groove is formed in the lower mold body, a forming inner wall is arranged at the lower end of the upper mold body, a plugging groove is formed in the inner side of the forming inner wall, a first ejection platform is horizontally arranged above the first driving oil cylinder and is arranged in the forming groove, a second ejection platform is horizontally arranged below the second driving oil cylinder and is arranged in the plugging groove.

When the plastic shell injection mold of the technical scheme is used, a user pulls the upper mold body downwards to the upper end of the lower mold body by hand to enable the forming inner wall to enter the forming groove, meanwhile, the second driving oil cylinder is started to enable the second ejection platform to descend to the same plane with the bottom end of the forming inner wall, then the first driving oil cylinder is started to enable the first ejection platform to move up and down in the forming groove, the distance between the bottom end of the forming inner wall and the first ejection platform is adjusted, and then molten plastic is introduced into the forming groove.

Preferably, No. one drive cylinder upper end swing joint has a jacking branch No. one, No. one ejecting platform fixed mounting in jacking branch upper end, No. two drive cylinder lower extreme swing joint has No. two jacking branches, No. two ejecting platform fixed mounting in No. two jacking branch lower extremes. A first driving oil cylinder vertically lifts a first jacking support rod to control a first ejection platform to vertically move in a forming groove, and a second driving oil cylinder vertically lifts a second jacking support rod to control a second ejection platform to vertically move in a plugging groove.

Preferably, two sets of support frames are vertically installed between the left end and the right end of the first driving oil cylinder and the second driving oil cylinder, a lifting groove is vertically formed in the inner side of each support frame, connecting seats are fixedly connected to the left end and the right end of the upper die body, and the connecting seats are arranged on the inner side of the lifting groove. The connecting seat vertically moves in the lifting groove to stabilize the moving direction of the upper die body.

Preferably, the front side and the rear side of the connecting seat are respectively provided with a latch, the front side and the rear side of the inner end of the lifting groove are vertically distributed with racks, and the latches are meshed with the racks. The structure frictional force that meshing connection produced between latch and the rack structure is greater than the self gravity of last mould body, prevents the unexpected whereabouts of mould body in the in-process that rises.

Preferably, a buckle groove has all been seted up to the bed die body four corners, a buckle head is all installed in a drive cylinder upper end four corners, a buckle head buckle connect in a buckle groove inboard. The lower die body is conveniently replaced through the buckle connection of a buckle head and a buckle groove.

Preferably, two buckle grooves are formed in four corners of the upper die body, two buckle heads are mounted in four corners of the lower end of the second driving oil cylinder, and the two buckle heads are connected to the inner sides of the two buckle grooves in a buckling mode. The upper die body is convenient to replace through the buckle connection of the second buckle head and the second buckle groove.

Preferably, injection molding holes are formed in the front side and the rear side of the lower die body and communicated with the inner side of the molding groove, and an injection molding pipe fitting is connected to the outer end of each injection molding hole. The injection molding machine is connected with the injection molding pipe fitting, so that molten plastic enters the molding groove through the injection molding hole, and the inner wall is matched with the molding groove to form the plastic shell.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the plastic shell injection mold adopts a mode that the first ejection platform and the second ejection platform are ejected oppositely by the oil cylinder devices on the upper side and the lower side of the two groups of molds, the molded plastic shell can be ejected out of the molds no matter the plastic shell is adhered in the upper mold body or the lower mold body, the automatic demolding mode avoids manual forced traction of the plastic shell to damage the structure of the plastic shell, the first ejection platform and the second ejection platform can play a plane supporting role on the plastic shell by utilizing a horizontal plate-shaped structure, and the whole thickness of an injection molding piece can be adjusted in a free lifting mode in the injection molding process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a mold closing structure of an injection mold for plastic housings according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a mold separation structure of an injection mold for plastic housings according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a lower mold body of an injection mold for plastic housings according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an upper mold body of an injection mold for plastic housings according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an operating structure of a first driving cylinder according to an embodiment of the injection mold with a plastic casing of the present invention.

The labels in the figures are: 1. a lower die body; 2. forming a groove; 3. an upper die body; 4. forming an inner wall; 5. plugging the groove; 6. a first driving oil cylinder; 7. a first ejection platform; 8. a second driving oil cylinder; 9. a second ejection platform; 10. jacking supporting rods; 11. jacking supporting rods II; 12. a support frame; 13. a lifting groove; 14. a connecting seat; 15. clamping teeth; 16. a rack; 17. a fastener slot; 18. a fastener head; 19. A second snap groove; 20. a second snap head; 21. injection molding holes; 22. and (5) injection molding the pipe fitting.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood and obvious, the technical solutions in the embodiments of the present invention are clearly and completely described below to further illustrate the utility model, and obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments.

Example 1

The specific embodiment is used for a plastic shell injection mold, the schematic diagram of the mold closing structure is shown in figure 1, the schematic diagram of the mold separating structure is shown in figure 2, the schematic diagram of the lower mold body 1 is shown in figure 3, the schematic diagram of the upper mold body 3 is shown in figure 4, the schematic diagram of the working structure of a first driving oil cylinder 6 is shown in figure 5, the injection mold comprises a lower mold body 1, an upper mold body 3 arranged above the lower mold body 1, a first driving oil cylinder 6 arranged at the lower end of the lower mold body 1, and a second driving oil cylinder 8 arranged at the upper end of the upper mold body 3, a forming groove 2 is arranged at the inner side of the lower mold body 1, a forming inner wall 4 is arranged at the lower end of the upper mold body 3, a blocking groove 5 is arranged at the inner side of the forming inner wall 4, a first ejecting platform 7 is horizontally arranged above the first driving oil cylinder 6, and the first ejecting platform 7 is arranged at the inner side of the forming groove 2, a second ejection platform 9 is horizontally arranged below the second driving oil cylinder 8, and the second ejection platform 9 is arranged on the inner side of the plugging groove 5.

For the present embodiment, the structural friction force generated by the engagement connection between the latch 15 and the rack 16 structure is greater than the self-gravity of the upper mold body 3, so that the upper mold body 3 is prevented from falling accidentally during the rising process, and the moving speed of the upper mold body 3 can be controlled within a proper range.

Wherein, No. one drive cylinder 6 upper end swing joint has jacking branch 10 No. one, and ejection platform 7 fixed mounting is in jacking branch 10 upper end No. one, and No. two drive cylinder 8 lower extreme swing joint has No. two jacking branch 11, and No. two ejection platform 9 fixed mounting is in No. two jacking branch 11 lower extremes. No. one drive cylinder 6 vertical lifting first jacking supporting rod 10 controls No. one ejection platform 7 to vertically move in the forming groove 2, and No. two drive cylinder 8 vertical lifting second jacking supporting rod 11 controls No. two ejection platform 9 to vertically move in the plugging groove 5

Simultaneously, vertical two sets of support frames 12 of installing between the both ends about drive cylinder 6 and No. two

drive cylinder

8, 12 inboard vertical lifting groove 13 that are provided with of support frame, go up mould body 3 and control equal fixedly connected with connecting seat 14 in both ends, connecting seat 14 sets up in lifting groove 13 inboard, and both sides all are provided with latch 15 around the connecting seat 14, and the vertical distribution in both sides has rack 16 around 13 inner of lifting groove, is connected for the meshing between latch 15 and the rack 16. The connecting seat 14 vertically moves in the lifting groove 13 to stabilize the moving direction of the upper die body 3, and the structural friction force generated by meshing connection between the latch 15 and the rack 16 structure is greater than the self gravity of the upper die body 3, so that the upper die body 3 is prevented from falling accidentally in the rising process.

In addition, a buckle groove 17 has all been seted up in 1 four corners of bed die body, a buckle 18 has all been installed in the upper end four corners of drive cylinder 6, a buckle 18 buckle is connected in a buckle groove 17 inboard, go up mould body 3 four corners and have all been seted up No. two buckle grooves 19, No. two buckle 20 is all installed in No. 8 lower extreme four corners of drive cylinder, No. two buckle 20 buckles are connected in No. two buckle groove 19 inboards. The lower die body 1 is conveniently replaced through the buckling connection of a buckling head 18 and a buckling groove 17, and the upper die body 3 is conveniently replaced through the buckling connection of a buckling head 20 and a buckling groove 19.

In addition, injection molding holes 21 have been all seted up to both sides around the bed die body 1, and injection molding holes 21 communicate in shaping groove 2 inboard, and injection molding pipe fitting 22 is connected with to injection molding holes 21 outer end. The injection molding machine is connected with an injection molding pipe fitting 22, so that molten plastic enters the molding groove 2 through the injection molding hole 21 and is matched with the molding inner wall 4 to form a plastic shell.

When the plastic shell injection mold of the technical scheme is used, a user pulls the upper mold body 3 downwards to the upper end of the lower mold body 1 by hand, the forming inner wall 4 enters the forming groove 2, simultaneously, the second driving oil cylinder 8 is started to make the second ejection platform 9 descend to the same plane with the bottom end of the forming inner wall 4, then the first driving oil cylinder 6 is started to make the first ejection platform 7 move up and down in the forming groove 2, the distance between the bottom end of the forming inner wall 4 and the first ejection platform 7 is adjusted, the thickness of a formed plastic part is controlled, then molten plastic is introduced into the forming groove 2 through the injection molding pipe fitting 22, after the plastic is formed, the upper mold body 3 moves upwards along the support frame 12, the moving speed is uniform and slow through the connection of the latch 15 and the rack 16, the accidental falling is avoided, and in the moving process, the plastic part is always pressed and locked at the inner side of the forming groove 2 by the second ejection platform 9, when the plastic part is completely separated from the upper die body 3, the upper die body 3 and the second driving oil cylinder 8 are locked through the second clamping groove 19 and the second clamping head 20, then the second driving oil cylinder 8 is controlled to upwards pack the second ejection platform 9, the first driving oil cylinder 6 upwards jacks the first ejection platform 7, the plastic part is clamped and lifted between the first ejection platform 7 and the second ejection platform 9, the periphery of the plastic part is exposed, and the plastic part is conveniently manually taken down.

Having thus described the principal technical features and basic principles of the utility model, and the advantages associated therewith, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.

Claims

1. An injection mold for a plastic shell comprises a lower mold body, an upper mold body arranged above the lower mold body, a first driving oil cylinder arranged at the lower end of the lower mold body, and a second driving oil cylinder arranged at the upper end of the upper mold body; the inner side of the lower die body is provided with a forming groove, the lower end of the upper die body is provided with a forming inner wall, the inner side of the forming inner wall is provided with a plugging groove, a first ejection platform is horizontally arranged above the first driving oil cylinder, the first ejection platform is arranged on the inner side of the forming groove, a second ejection platform is horizontally arranged below the second driving oil cylinder, and the second ejection platform is arranged on the inner side of the plugging groove.

2. The injection mold for plastic housings as claimed in claim 1, wherein the first driving cylinder has a top end movably connected with a first jacking rod, the first ejecting platform is fixedly mounted on the top end of the first jacking rod, the second driving cylinder has a bottom end movably connected with a second jacking rod, and the second ejecting platform is fixedly mounted on the bottom end of the second jacking rod.

3. The injection mold for plastic housings of claim 1, wherein two sets of supporting frames are vertically installed between the left and right ends of the first and second actuating cylinders, the supporting frames are vertically provided with lifting slots, the left and right ends of the upper mold body are fixedly connected with connecting seats, and the connecting seats are arranged inside the lifting slots.

4. The plastic shell injection mold according to claim 3, wherein the connecting seat is provided with latches on both the front and rear sides, racks are vertically distributed on both the front and rear sides of the inner end of the lifting groove, and the latches are engaged with the racks.

5. The injection mold for plastic housings as claimed in claim 1, wherein the lower mold body has a number of snap grooves formed at four corners thereof, and a number of snap heads are mounted at four corners of an upper end of the number of driving cylinders, and the number of snap heads are snap-connected to an inner side of the number of snap grooves.

6. The injection mold for plastic housings as claimed in claim 1, wherein the upper mold body has two snap grooves formed at four corners thereof, two snap heads are mounted at four corners of the lower end of the two driving cylinders, and the two snap heads are snap-connected to the inner sides of the two snap grooves.

7. The injection mold for plastic housings as claimed in claim 1, wherein the lower mold body has injection holes formed at both front and rear sides thereof, the injection holes communicating with the inside of the molding groove, and the outer ends of the injection holes being connected to injection pipes.