CN2540270Y

CN2540270Y - Point runner runnerless push pedal injection mould

Info

Publication number: CN2540270Y
Application number: CN 02267384
Authority: CN
Inventors: 许思光
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2003-03-19
Anticipated expiration: 2012-05-31

Abstract

The utility model discloses an injection mould used for pin-point gate no flow channel pushing plates, which comprises a movable mould plate 20 and a fixed mould plate 6, wherein a setting plate 17 is arranged on the movable mould plate 20, and an ejector fixed plate 16 is arranged on the setting plate 17. An ejector 3 is arranged on the ejector fixed plate 16, a movable mould 4 is arranged on mould feet 31, and a guide post 13 is arranged on the movable mould 4. A support guide post 15, a sprue bush 21 and a positioning ring 22 are arranged on the fixed mould plate 6, the center of the sprue bush 21 is a flow channel 8, and a check ring 18 and a screw 19 are arranged under the support guide post 15. A static mould 10 is arranged under the fixed mould plate 6, a guide sleeve 11 is arranged on the static mould 10, the guide sleeve 11 us corresponding to the guide post 13, and matched locking components 5 are arranged on the movable mould 4 and the static mould 10. The utility model is characterized in that a flow channel push rod 25 is arranged on the fixed mould plate 6, and a flow channel delay tank 27 is arranged on the fixed mould plate 6 in the front end of the flow channel push rod 25. The utility model can simplify mould structure, shorten mould production period and reduce flow channel length with safety.

Description

Injection mould for teeming sprae and non-channel push-plate

Technical field:

The utility model relates to the plastic injection mould technical field, is a kind of injection mould that is used for teeming sprae and non-channel push-plate specifically.

Background technology:

At present, minute mold center's charging of the injection molding of existing some cast gate charging form and two kinds of forms of non-mold center charging, the former is usually used in single chamber single-point cast gate charging form, the latter is usually used in single chamber multi-point sprue charging form and multi-cavity point cast gate charging form, adopts compound charging gate form in addition in addition; The mould of preceding two kinds of versions is in order to separate with cast gate runner with goods, last a kind of compound charging gate form for runner is separated with runner, and then runner and mould disengagement, make every suit mould increase a plurality of parts such as pull bar, spring, runner ejection plate, guide pin bushing, screw, also to increase the processing in tens holes, this mould structure has not only increased the manufacturing cost of mould, and has prolonged die manufacturing cycle; The producer that also has has adopted a kind of simple mould structure, but can not automated production, needs take out runner by hand, and productivity ratio is low, and dangerous.Thereby a kind of some cast gate injection mould of simplifying mould structure, shortening die manufacturing cycle, minimizing flow channel length and safety was not seen at present.

Summary of the invention:

The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, and a kind of mould structure, shortening die manufacturing cycle, minimizing flow channel length, production efficiency height and safe injection mould for teeming sprae and non-channel push-plate simplified is provided, mainly solved existing injection mould mould complexity, long problem of manufacturing cycle.

To achieve these goals, the utility model is achieved in that injection mould for teeming sprae and non-channel push-plate, it comprises moving platen 20, solid plate 6, establish backing plate 17, mould pin 31 on the moving platen 20, establish ejector pin retaining plate 16 on the backing plate 17, on ejector pin retaining plate 16, establish push rod 3, release link 14, backing plate 17, ejector pin retaining plate 16, push rod 3, release link 14 are formed a chunk, between the Kong Zaimo pin 31 of the release link 14 of dynamic model 4, move, on mould pin 31, establish dynamic model 4, on dynamic model 4, establish guide pillar 13; On solid plate 6, establish supporting cell guide 15, sprue bush 21, centring ring 22, the center of sprue bush 21 is a runner 8, divide into back-up ring 18, screw 19 at supporting cell guide 15, divide into quiet mould 10 at solid plate 6, establish guide pin bushing 11 on quiet mould 10, guide pin bushing 11 is corresponding with guide pillar 13, establishes the latch assembly 5 that is complementary on dynamic model 4 and quiet mould 10, its special character is to establish runner push rod 25 on solid plate 6, establish runner delay tank 27 on the solid plate 6 of runner push rod 25 front ends.

To achieve these goals, injection mould for teeming sprae and non-channel push-plate of the present utility model, its described runner push rod 25 can be straight push rod form, also can be " Z " shape push rod form; Its described runner delay tank 27 can be bevel-type, dolioform, " Z " shape, columniform; And the quantity of runner push rod 25 and runner delay tank 27 can be one, also can be a plurality of; Add man-hour runner push rod 25 and runner delay tank 27 can be directly arranged on the solid plate 6, also can be made into an assembly 30 separately, be contained on the solid plate 6, runner push rod 25 is outer in addition can establish plug 28.

Injection mould for teeming sprae and non-channel push-plate of the present utility model is the reciprocating motion that utilizes the runner ejection plate on the injection machine, the mechanism that replaces prior art to be made up of complicated parts with a kind of simple mechanism on mould; Mould in use, behind the matched moulds, hydraulic injection molding machine cylinder and runner ejection plate are in going-back position, the runner push rod is in the non-stress state; During injection, the runner push rod returns under the effect of liquid plastic, runner delay tank and goods are full of by plastics simultaneously, treat plastic cool curing back die sinking, because the retention force of runner delay tank is greater than the tensile strength at cast gate place, runner separates with goods, runner be trapped on the solid plate of mould (in) and sprue bush in, the hydraulic injection molding machine cylinder drives runner ejection plate and advances, with runner from the solid plate of mould () eject, simultaneously the runner in the sprue bush is taken out of, has realized that runner separates with goods with cast gate, and the application target of throwing off with mould.

Compared with the prior art the utility model has outstanding substantive distinguishing features and marked improvement, and 1, owing to simplified mould structure, reduce the pilot hole of each part, thereby shortened the manufacturing cycle of mould, reduced cost; 2, shorten the length of runner, improved the flowability of plastics, saved plastics; 3, shorten the length of supporting cell guide, improved stress condition, saved material; 4, changed the structure of traditional some cast gate injection mould, thereby made it simple in structure, easy to make.

Description of drawings:

Fig. 1---a kind of structural representation of the present utility model;

Fig. 2---another kind of structural representation of the present utility model;

Fig. 3---another structural representation of the present utility model;

Fig. 4---another structural representation of the present utility model;

Fig. 5---another structural representation of the present utility model.

The specific embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe the utility model injection mould for teeming sprae and non-channel push-plate in detail.

Embodiment 1, referring to Fig. 1, moving platen 20 is made in machined, fixed installation mould pin 31 on the moving platen 20, bar 3, release link 14, backing plate 17, ejector pin retaining plate 16, push rod 3, release link 14 formed a chunk, moves between the Kong Zaimo pin 31 of the release link 14 of dynamic model 4, dynamic model 4 is installed on mould pin 31, guide pillar 13 is installed on dynamic model 4; Solid plate 6 is made in machined, runner push rod 25 is installed on solid plate 6, processing flow channel delay tank 27, supporting cell guide 15 is installed, sprue bush 21, centring ring 22, runner push rod 25 is straight push rod form, runner delay tank 27 is to be tapered, adding man-hour runner delay tank 27 is directly arranged on the solid plate 6, the center of sprue bush 21 is a

runner

8,15 times back-up ring 18 is installed at supporting cell guide, and it is fixing with screw 19, at solid plate quiet mould 10 is installed for 6 times, mounting guide sleeve 11 on quiet mould 10, guide pin bushing 11 is corresponding with guide pillar 13, and the latch assembly 5 that is complementary with quiet mould 10 is installed on dynamic model 4; Moving platen 20 is fixedly mounted on the moving plate 1 of the injection-moulding device of being with knock-pin 2; Solid plate 6 is installed in again and decides on the plate 7, decide to be equipped with on the plate 7 hydraulic cylinder 24, nozzle 23, runner ejection plate 26, nozzle 23 is corresponding with the sprue bush 21 of below.Its job order is: matched moulds, and injection, die sinking, runner ejects, and goods eject, matched moulds.

Present embodiment is applicable to that the some cast gate injection mould of single chamber multiple feed or the single-point charging of single chamber and charging aperture be not at the some cast gate injection mould of mold center, Fig. 1 is the matched moulds state, this moment, mould was in " locking state ", runner ejection plate 26 is an original state, plastics enter die cavity 9 through runner 8 during injection under liquid state, simultaneously runner push rod 25 pushes back shown position under the effect of plastics liquid pressure, and runner delay tank 27 is full of by plastics, until die cavity 9 end-of-fills; Behind the goods curing molding, the motor-driven plate 1 of injection moulding drives moving platen 20, dynamic model 4 etc. and retreats, quiet mould 10 retreats with dynamic model 4 under the effect of latch assembly 5, solid plate 6 is separated with quiet mould 10, because the big sub-runner of the retention force of 27 pairs of runners 8 of runner delay tank 8 is the stretching resistance at thin place, runner 8 is broken and is separated with goods; Along with moving platen 20 grades continue retreat, guide pin bushing 11 contacts with back-up ring 18, quiet mould 10 stops to retreat, and separates with dynamic model 4 and latch assembly 5; Hydraulic cylinder 24 actions drive runner ejection plate 26 and advance, and drive runner push rod 25 ejects solid plate 6 with runner and falls; Moving platen 20 grades retreat into stop motion behind the position of setting, and injection machine knock-pin 2 advances, and drive push rod 3, release link 14 is advanced, and goods in the die cavity 9 are ejected core, and take away or fall automatically; Runner ejection plate 26 retreats under the effect of hydraulic cylinder 24 and resets, and knock-pin 2 retreats, and moving platen 20 is being with dynamic model 4 to advance, and push rod 3, ejector pin retaining plate 16, backing plate 17 reset under the effect of release link 14.

Embodiment 2, and referring to Fig. 2, present embodiment injection mould for teeming sprae and non-channel push-plate present embodiment as different from Example 1 is applicable to multi-cavity point cast gate injection mould, and the shape of runner delay tank 27 is different with embodiment 1, for dolioform.

Embodiment 3, referring to Fig. 3, present embodiment injection mould for teeming sprae and non-channel push-plate present embodiment as different from Example 1 is applicable to the single-point charging of single chamber and the charging aperture point cast gate injection mould in mold center, be that present embodiment is applicable to the single-point charging of single chamber and the charging aperture point cast gate injection mould in mold center, the shape of its runner delay tank 27, runner push rod 25 is different with embodiment 1, runner delay tank 27 is " Z " shapes, matches with runner push rod 25.

Embodiment 4, referring to Fig. 4,5, present embodiment is a cast gate, the compound charging of side gate does not have the runner ejection plate injection mould, present embodiment is applicable to compound charging gate Injection Mold as different from Example 1, for making runner push rod 25 that accurate in locating be arranged in mould, increased plug 28, in the position of deciding close nozzle 23 on the plate 7 runner push rod 29 is installed, its effect is the auxiliary runner 8 that ejects in the sprue bush 21, and on ejector pin retaining plate 16, fixedly mount push rod 12, and its effect is to eject second runner, the Fig. 5 that is not both of Fig. 5 and Fig. 4 is the runner push rod 25 among Fig. 4, runner delay tank 27, plug 28 makes an assembly 30, so that the moulding cycle is shortened in processing.

Be that example provides its operation principle below with Fig. 4, its job order is: matched moulds, and injection, die sinking, first flow ejects, and goods, second runner eject matched moulds.Fig. 4 is the matched moulds state, this moment, mould was in " locking state ", runner ejection plate 26 is an original state, plastics enter die cavity 9 through runner 8 during injection under liquid state, while

runner push rod

25,29 push back shown position under the effect of plastics liquid pressure, runner delay tank 27 is full of by plastics, until die cavity 9 end-of-fills, behind the goods curing molding, the motor-driven plate 1 of injection moulding drives moving platen 20, dynamic model 4 grades retreat, and quiet mould 10 retreats with dynamic model 4 under the effect of latch assembly 5, and solid plate 6 is separated with quiet mould 10, because the retention force of 27 pairs of runners 8 of runner delay tank is greater than runner 8 stretching resistance at thin place, runner 8 is broken and is separated with goods; Along with moving platen 20 grades continue retreat, guide pin bushing 11 contacts with back-up ring 18, quiet mould 10 stops to retreat, and separate with dynamic model 4 and latch assembly 5, hydraulic cylinder 24 actions drive runner ejection plate 26 and advance, and drive

runner pull bar

25,29 ejects solid plate 6 with first flow and falls; Moving platen 20 grades retreat into stop motion behind the position of setting, and injection machine knock-pin 2 advances, and drive

push rod

3,12, release link 14 is advanced, and the goods and second runners in the die cavity 9 are ejected core, and take away or fall automatically; Runner ejection plate 26 retreats under the effect of hydraulic cylinder 24 and resets, and knock-pin 2 retreats, and moving platen 20 is being with dynamic model 4 to advance, and push

rod

3,12, ejector pin retaining plate 16, backing plate 17 reset under the effect of release link 14.

Claims

1, injection mould for teeming sprae and non-channel push-plate, it comprises moving platen (20), solid plate (6), establish backing plate (17), mould pin (31) on the moving platen (20), establish ejector pin retaining plate (16) on the backing plate (17), on ejector pin retaining plate (16), establish push rod (3), release link (14), on mould pin (31), establish dynamic model (4), on dynamic model (4), establish guide pillar (13); On solid plate (6), establish supporting cell guide (15), sprue bush (21), centring ring (22), the center of sprue bush (21) is runner (8), divide into back-up ring (18), screw (19) at supporting cell guide (15), divide into quiet mould (10) at solid plate (6), on quiet mould (10), establish guide pin bushing (11), guide pin bushing (11) is corresponding with guide pillar (13), on dynamic model (4) and quiet mould (10), establish the latch assembly (5) that is complementary, it is characterized in that on solid plate (6), establishing runner push rod (25), on the solid plate (6) of runner push rod (25) front end, establish runner delay tank (27).

2, by the described injection mould for teeming sprae and non-channel push-plate of claim 1, it is characterized in that described runner push rod (25) can be straight push rod form, also can be " Z " shape push rod form.

3, by the described injection mould for teeming sprae and non-channel push-plate of claim 1, it is characterized in that described runner delay tank (27) can be taper, dolioform, " Z " shape, columniform.

4, by claim 1 or 2 or 3 described injection mould for teeming sprae and non-channel push-plate, it is characterized in that the quantity of described runner push rod (25) and runner delay tank (27) can be one, also can be a plurality of.

5, by claim 1 or 2 or 3 described injection mould for teeming sprae and non-channel push-plate, it is characterized in that described runner push rod (25) and runner delay tank (27) can be directly arranged on the solid plate (6), also can be made into an assembly (30) separately, be contained on the solid plate (6).

6, by the described injection mould for teeming sprae and non-channel push-plate of claim 4, it is characterized in that described runner push rod (25) and runner delay tank (27) can be directly arranged on the solid plate (6), also can be made into an assembly separately, be contained on the solid plate (6).

7, by claim 1 or 2 or 3 described injection mould for teeming sprae and non-channel push-plate, it is characterized in that described runner push rod (25) peripheral hardware plug (28).