CN209395185U

CN209395185U - A kind of plane needle-valve is into adhesive dispenser

Info

Publication number: CN209395185U
Application number: CN201822134239.4U
Authority: CN
Inventors: 丁来明
Original assignee: Baoding City Plastic Manufacturing Co Ltd
Current assignee: Baoding City Plastic Manufacturing Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2019-09-17
Anticipated expiration: 2028-12-19

Abstract

The utility model discloses a kind of plane needle-valve into adhesive dispenser, including cover half, the bottom end of the cover half is fixed with sprue bush, sprue is fixedly connected with above the sprue bush, the sprue is connected with flow distribution plate, several runners are equipped in the flow distribution plate, several hot nozzles are equipped in the runner, several actuators are fixed on the cover half, needle-valve is fixed on the actuator, the needle-valve extends in the hot nozzle, the inner cavity of the runner includes the first vertical tube part, first conus portion, second vertical tube part, second conus portion, third vertical tube part, third conus portion, third vertical tube part and conical top；The plane needle-valve of the utility model makes product surface there are a circle printing mark or no trace into adhesive dispenser, also makes noresidue at cast gate, will not generate extra waste material, saves raw material, avoids the secondary treatment at cast gate.

Description

A kind of plane needle-valve is into adhesive dispenser

Technical field

The utility model relates to novel hot flow path plane needle-valves into plastic structure mould applications, more particularly to a kind of plane needle Valve is into adhesive dispenser.

Background technique

In injection-moulding plastic field, hot-runner pin valve into sealing rubber die technology oneself through being widely applied, hot-runner pin valve is into glue Tool and Die Technology can not only reduce the waste of plastic material, also promotion production yield, reduce production cost；Present customer requirement Charging trace not occur in the appearance of finished product, and as the requirement of client is higher and higher, therefore, it is necessary to existing hot flow path needle Valve mould structure is correspondingly improved；Need to provide the male model that a kind of plane needle valve type hot runner needle-valve enters directly into product Face, needle valve mouth can accomplish no cast gate trace, and only product surface leave a circle printing mark even without, have cast gate at noresidue, Extra waste material will not be generated, raw material is saved, avoids the needle valve of the advantage of the secondary treatment at cast gate into adhesive dispenser.

Utility model content

The purpose of the utility model is to provide a kind of plane needle-valves into adhesive dispenser, to solve above-mentioned of the existing technology ask Topic, makes product surface there are a circle printing mark or no trace, also makes noresidue at cast gate, will not generate extra waste material, Raw material is saved, the secondary treatment at cast gate is avoided.

To achieve the above object, the utility model provides following scheme: the utility model provide a kind of plane needle-valve into Adhesive dispenser, including cover half, the bottom end of the cover half are fixed with sprue bush, are fixedly connected with sprue above the sprue bush, institute It states sprue to be connected with flow distribution plate, several runners is equipped in the flow distribution plate, are equipped with several hot nozzles in the runner, It is fixed with several actuators on the cover half, needle-valve is fixed on the actuator, the needle-valve extends in the hot nozzle, institute The inner cavity for stating runner includes that the first vertical tube part, first vertical tube part front end are fixedly connected with the first conus portion, and described first Conus portion is fixedly arranged at the front end with the second vertical tube part, and the front end of second vertical tube part is fixedly connected with the second conus portion, and described second The front end of conus portion is fixedly connected with third vertical tube part, and the front end of the third vertical tube part is fixedly connected with third conus portion, institute The front end for stating third conus portion is fixedly connected with the 4th vertical tube part, the front end of the 4th vertical tube part and the fixed company of conical top It connects, the conical top and being connected on cavity wall into glue through-hole.

Preferably, the height of first conus portion is 2-4 times of the second conus portion height, first conus portion Taper be less than second conus portion taper.

Preferably, the height of the third conus portion is 1.5-2 times of the second conus portion height, the third circle The taper in tapering is less than the taper of second conus portion.

Preferably, the height of second conus portion is identical as the height of the conical top, second conus portion Taper is greater than the taper of the conical top, and the height of second conus portion and conical top is 31mm-35mm.

Preferably, the angle that the hot nozzle outer wall and vertical direction are formed is 15 ° -45 °.

Preferably, the taper of the needle valve bottom end is not more than the taper of conical top.

Preferably, the needle valve bottom end is fixed with rubber pad.

Preferably, the actuator is cylinder.

The utility model discloses following technical effects: plane needle-valve disclosed by the utility model is into adhesive dispenser by plane needle Valve is set in stationary mould for mould into plastic structure, wherein needle-valve is made to enter directly into the common die face of product, the taper of needle valve bottom end is not Greater than the taper of conical top, to guarantee to realize without cast gate trace, and a circle printing mark only is left in product surface, do not printed even Mark has noresidue at cast gate, will not generate extra waste material, saves raw material, avoids the advantage that secondary treatment is carried out at cast gate.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without any creative labor, can also basis These attached drawings obtain other attached drawings.

Fig. 1 is structural schematic diagram of the utility model plane needle-valve into adhesive dispenser；

Fig. 2 is the cross-sectional view in the direction A in Fig. 1；

Fig. 3 is the partial enlarged view of Fig. 2；

Fig. 4 is the structural schematic diagram of the utility model needle-valve bottom；

Wherein, 1- cover half；2- is into glue through-hole；3- type chamber；4- actuator；The hot nozzle of 6-；7- flow distribution plate；8- needle-valve；9- mainstream Road；10- runner；11- sprue bush；12- rubber pad；The first vertical tube part of 13-；The first conus portion of 14-；The second vertical tube part of 15-； The second conus portion of 16-；17- third vertical tube part；18- third conus portion；The 4th vertical tube part of 19-；20- conical top.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have Body embodiment is described in further detail the utility model.

As shown in Figs 1-4, the utility model provides a kind of plane needle-valve into adhesive dispenser, including cover half 1, the bottom end of cover half 1 It is fixed with sprue bush 11, and is fixedly connected with sprue 9 above sprue bush 11, sprue bush 11 plays a protective role to sprue 9, And it can be convenient plastic cement to be quickly passed through, sprue 9 is connected with flow distribution plate 7, several runners 10 are equipped in flow distribution plate 7, with Just plastic cement is entered in type chamber 3 by each runner 10, several hot nozzles 6 are equipped in runner 10, are fixed with several on cover half 1 Actuator 4 is fixed with needle-valve 8 on actuator 4, so that needle-valve 8 carries out up or down movement, guarantee to realize needle-valve 8 with Have the function that close into adhesive dispenser into the fitting of glue point taper into glue through-hole 2；Needle-valve 8 is extended in hot nozzle 6, wherein runner 10 inner cavity is fixedly connected with the first conus portion 14, the first conus portion 14 including the first vertical tube part 13,13 front end of the first vertical tube part It is fixedly arranged at the front end with the second vertical tube part 15, the front end of the second vertical tube part 15 is fixedly connected with the second conus portion 16, the second conus portion 16 Front end be fixedly connected with third vertical tube part 17, the front end of third vertical tube part 17 is fixedly connected with third conus portion 18, third circle The front end in tapering 18 is fixedly connected with the 4th vertical tube part 19, and the front end of the 4th vertical tube part 19 is fixedly connected with conical top 20, with The structure setting of upper 10 inner cavity of runner can make plastic cement enter the variation for having a speed in runner 10, so that The plastic cement speed entered eventually into type chamber 3 is slow, and then will not leave casting trace in product surface, will not also make plastic cement It leaks, more saving cost of material；Conical top 20 and being connected on 3 wall of type chamber into glue through-hole 2, so that plastic cement It can smoothly enter into type chamber 3.

Scheme is advanced optimized, in order to make have speed difference by the plastic cement of runner 10, by the height of the first conus portion 14 It is set as 2-4 times of 16 height of the second conus portion, sets 16 height of the second conus portion for the height of third conus portion 18 It is 1.5-2 times, the height of the second conus portion 16 is identical as the height of conical top 20, the second conus portion 16 and conical top 20 Height is 31mm-35mm, preferably 33mm, in this way when plastic cement flow to the first vertical tube part 13, the flowing speed of plastic cement by runner 10 Degree is very fast, and when passing through the first conus portion 14, since the inner wall of the first conus portion 14 is ramp structure, then the flow velocity of plastic cement will It reduces, when flowing through the second vertical tube part 15, since the height of the second vertical tube part 15 is shorter, too big variation will not occur for flow velocity, from When second vertical tube part 15 flows through the second conus portion 16, since the height of the second conus portion 16 is much smaller than the height of the first conus portion 14 Degree, and the taper of the second conus portion 16 is greater than the taper of the first conus portion 14, then the gradient of 16 inner wall of the second conus portion is more flat Slow, the plastic cement speed flowed through can also become slowly therewith, and when plastic cement is flowed through to third vertical tube part 17 and third conus portion 18, by It is higher than the second conus portion 16 in the height of third conus portion 18, and the taper of the second conus portion of taper ratio 16 of third conus portion 18 Small, thus the ramp rate of 18 inner wall of third conus portion is higher, therefore, plastic cement flow velocity can become faster again, and when flowing to conical top 20, Plastic cement flow velocity just can become slowly again, and since the taper of conical top 20 is smaller, the inner wall gradient of conical top 20 is steeper, plastic cement Flow velocity it is relatively fast, not only can guarantee that the normal molding of product is saved into but also plastic material does not waste This, simultaneously because the taper of 8 bottom end of needle-valve is not less than the taper of conical top 20, in this way under the action of actuator 4, needle-valve 8 Move up the position up to coincide with conical top 20, i.e. needle-valve 8 is fully inserted into conical top 20, in this way at One circle printing of only possible appearance on the product of type, and if the taper of 8 bottom end of needle-valve is greater than the taper of conical top 20, such needle 8 bottom end of valve then can just prevent plastic cement from entering back into, and also be not exposed to product surface, then be not in circle on such product surface Print.

Scheme is advanced optimized, in order to be injected into plastic cement preferably in type chamber 3, by hot 6 outer wall of nozzle and vertical direction shape At angle be 15 ° -45 °.

Scheme is advanced optimized, 8 bottom end of needle-valve is directly contacted with product in order to prevent, is damaged to product, in needle-valve 8 Bottom end is fixed with rubber pad 12, this rubber pad 12 is structure of the plane without any decorative pattern, in order to avoid trace is left on product.

Advanced optimize scheme, actuator 4 is cylinder, and wherein cylinder uses common standard cylinder, when running not by System temperature influences, and guarantees system normal operation and service life.

At work into adhesive dispenser, plastic cement is projected by injection molding machine and flow to master through sprue bush 11 the plane needle-valve of the utility model In runner 9, then flow distribution plate 7 entered by sprue 9, then hot nozzle 6 flow to by the runner 10 on flow distribution plate 7, then by into glue Product is formed in the type chamber 3 for entering cover half 1 into glue point of through-hole 2, is at this moment molded into gum forming process and completes, enter type in plastic cement During chamber 3 forms product, the bottom end of needle-valve 8 is in the third vertical tube part 17 of runner 10；When product formation does not need When into plastic cement, start cylinder, cylinder pushes needle-valve 8 to be move upwardly until at into glue through-hole 2 into glue point that such plastic cement is just It can not enter in type chamber 3, be bonded to reach with the conical top 20 of runner 10 to play needle-valve 8 and close into glue through-hole 2 Effect.

The plane needle-valve of the utility model not only guarantees to realize to leave a circle printing in product surface without cast gate trace into adhesive dispenser Mark is even without also making noresidue at cast gate, will not generate extra waste material, save raw material, avoid carrying out at cast gate secondary Processing, improves the service life of whole device；In addition, the plane needle-valve of the utility model can be assembled into one into adhesive dispenser Plane needle-valve need to be only directly mounted in mold by assembly, when installation into mucilage binding, and very simple is convenient.

In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

Embodiment described above is only that the preferred embodiment of the utility model is described, not to the utility model Range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are practical new to this The various changes and improvements that the technical solution of type is made should all fall into the protection scope that the utility model claims book determines It is interior.

Claims

1. a kind of plane needle-valve is into adhesive dispenser, it is characterised in that: including cover half (1), the bottom end of the cover half (1) is fixed with cast gate It covers (11), is fixedly connected with sprue (9) above the sprue bush (11), the sprue (9) is connected with flow distribution plate (7), institute It states and is equipped with several runners (10) in flow distribution plate (7), be equipped with several hot nozzles (6), the cover half in the runner (10) (1) it is fixed with several actuators (4) on, is fixed with needle-valve (8) on the actuator (4), the needle-valve (8) extends to the heat In nozzle (6), the inner cavity of the runner (10) is fixedly connected including the first vertical tube part (13), first vertical tube part (13) front end Have the first conus portion (14), first conus portion (14) is fixedly arranged at the front end with the second vertical tube part (15), second vertical tube part (15) front end is fixedly connected with the second conus portion (16), and the front end of second conus portion (16) is fixedly connected with third straight tube The front end in portion (17), the third vertical tube part (17) is fixedly connected with third conus portion (18), the third conus portion (18) Front end is fixedly connected with the 4th vertical tube part (19), and the front end of the 4th vertical tube part (19) is fixedly connected with conical top (20), The conical top (20) and being connected on type chamber (3) wall into glue through-hole (2).

2. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: the height of first conus portion (14) It is 2-4 times of the second conus portion (16) height, the taper of first conus portion (14) is less than second conus portion (16) taper.

3. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: the height of the third conus portion (18) It is 1.5-2 times of described the second conus portion (16) height, the taper of the third conus portion (18) is less than second circular cone The taper in portion (16).

4. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: the height of second conus portion (16) Identical as the height of the conical top (20), the taper of second conus portion (16) is greater than the cone of the conical top (20) It spends, the height of second conus portion (16) and conical top (20) is 31mm-35mm.

5. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: hot nozzle (6) outer wall and vertical side It is 15 ° -45 ° to the angle of formation.

6. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: the taper of needle-valve (8) bottom end is not Less than the taper of conical top (20).

7. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: needle-valve (8) bottom end is fixed with rubber Rubber mat (12).

8. plane needle-valve according to claim 1 is into adhesive dispenser, it is characterised in that: the actuator (4) is cylinder.