CN202556660U - Polyurethane foaming forming machine two-component piston type mixing head mechanism - Google Patents

Abstract

The utility model discloses a polyurethane foaming forming machine two-component piston type mixing head mechanism. A cylinder seat, two sets of V-shaped levers, a mixing head base seat potting device are mounted on a mixing head base seat, and a piston rod and bridge-joint connecting rods are arranged on the mixing head base seat. The bridge-joint connecting rods are respectively connected with the piston rod, so that the piston rod is enabled to carry out stretching and retracting motions and to open or close a potting hole on the mixing head base seat synchronously, and therefore the function of controlling material discharging and mixing proportion is achieved. The polyurethane foaming forming machine two-component piston type mixing head mechanism is easy to dismantle and mount, the mixing head base seat can be effectively cleaned, and the mixing head base seat is enabled to keep clean and smooth.

Description

Polyurethane foam make-up machine two component piston type mixing head mechanisms

Technical field

The utility model relates to mechanical field, particularly a kind of polyurethane foam make-up machine two component piston type mixing head mechanisms.

Background technology

At present; Polyurethane foaming machine pouring head mixing arrangement is injected polyurethane A feed liquid and B feed liquid by a certain percentage by needle-valve or rotary valve and carries out rapid mixing in the hybrid chamber and stir on the market, and the feed liquid injection diel that will produce chemosynthesis reaction by pouring head then forms required goods.The needle valve mixing arrangement generally comprises and mixes headstock, needle-valve, needle-valve drive unit and cleaning valve.Though know that by polyurethane foam technology this type of device for casting has driving mechanisms control to open and close, because control of the air pressure of each pneumatic cylinder and mechanical action error, be difficult to realize that each device for casting accomplishes synchronous opening/closing; Just there is error in the mixed proportion of stock yard, thereby has influence on the quality of product, and the raw material of dealing out the cards in addition tends to remain in the device for casting in input process; Need clean often; But device for casting has all been processed the sealing shape mostly, disassembles inconvenience, is difficult for cleaning.

The utility model content

Deficiency to the prior art existence; The utility model provides a kind of lever principle of utilizing, and makes two groups of device for casting open synchronously or close, and can effectively control material rate; And be easy to dismounting, the new polyurethane foaming machine two component piston type mixing head mechanisms of being convenient to safeguard.

For realizing above-mentioned purpose, the utility model provides following technical scheme: include and mix pedestal, cylinder block, piston rod, V-type connecting rod, two groups of piston type device for casting, said mixing pedestal is processed predetermined dimension and is offered sprue; Said cylinder block one end is provided with two mounting groove other ends and is connected and installed and is integral with mixing pedestal, and draw-in groove is offered on said piston rod top, and the other end is installed in the cylinder block; And can cooperate the cylinder expanding-contracting action; Said V-type connecting rod combines with two mounting grooves of cylinder block with the centre position respectively and is movable, and the other end embeds in the draw-in groove of offering on the piston rod top, and said two groups of piston type device for casting one ends are connected with connecting rod; The other end is connected with piston rod and piston valve base; And piston rod one end is equipped with syringe needle, and is corresponding with fill orifice, can open or close fill orifice and move whereby.

The further setting of the utility model is: described two groups of piston type device for casting are made up of pull bar, shank, compression spring, pull bar support set, circulation cover and needle seating, and said pull bar is that an axle shape and an end have hole clipping, and the centre is provided with a block face; It is recessed to form ring that the outer surface of the other end is provided with less external diameter, and encircle spill with the neighbour and become the inclined-plane to cooperate, and end face is provided with screw; Shank one end is provided with syringe needle, and the other end is provided with screw thread and pull bar interlocking, and the compression spring is nested with on pull rod shaft; The other end is installed on the end face, and this pull bar bracing or strutting arrangement is to be designed to run-though space, and a back-up ring is set on the precalculated position, space; Pull bar support set appearance one end is provided with the interlocking anchor ring, offers lockhole on the interlocking anchor ring, and pull bar support set accommodation space supplies the line combination of pull bar and compression spring to place; The other end of order compression spring is pressed on the back-up ring, makes compression spring location, and circulation cover inside offers is used to perforation lanes; One end is processed the lock-joining part of lockhole, and the other end is processed central siphon, and the central siphon surface offers return port and plup inlet; System screw thread in the central siphon end, at interlocking internal configurations packing ring, the interlocking face of lock-joining part and pull bar support set is relative; Combine with the interlocking original paper, pull bar one end and shank can stretch into central siphon inside, and the recessed and shaft tube inner wall formation spacing of formed ring on the pull bar; The resistance material anchor ring of tie rod end forms with central siphon portion inwall and contact, and valve seat is processed the cap shape, and screw thread is made in end outside; Offer pin hole shape fill orifice on the other end, screw thread with combine with the central siphon end set screw thread of inner face, make the syringe needle of locking bar on the shank of tie rod end can be relative with fill orifice.

Below in conjunction with accompanying drawing the utility model is further described:

Description of drawings

The exploded view of Fig. 1 the utility model

The structural representation of Fig. 2 the utility model

The partial structurtes enlarged diagram of Fig. 3 the utility model

Fig. 4 the utility model stop perfusion action sketch map

Enlarged diagram is tied in the perfusion action part that stops of Fig. 5 the utility model

The specific embodiment

As depicted in figs. 1 and 2, this structure mainly by mix pedestal 10, cylinder block 20, piston rod 30, V-type connecting rod 40, two groups of piston type device for casting are formed jointly.Wherein mixed base seat body 10 is processed reservation shape, offers a sprue 11 and two raw material return ports 12.Cylinder block 20 1 ends are provided with corresponding mounting groove 21, and the other end is installed in to mix on the pedestal becomes one with it.Piston rod 30 1 ends are offered a draw-in groove 31, and the other end is installed in the cylinder block 20, and under preset Pneumatic pressure, do expanding-contracting action.40 centers of two V-type connecting rods combine to be with the mounting groove of cylinder block 20 can swing shape, and respectively has an end to be fastened in the draw-in groove 31 of piston rod 30 at two V-type connecting rods 40 of same cylinder block 20.

Each is made up of two groups of piston type device for casting a pull bar 51, a shank 52, a compression spring 53, a pull bar support set 54, a circulation cover 55 and needle seating 56.Wherein, pull bar 51 is the major axis shape, and an end has hole clipping 511, and a block face 513 is established in the centre, and it is recessed 515 to form ring that other end outer surface is provided with little external diameter, and next-door neighbour's ring recessed 515 forms a resistance material ring 519, and end face is a screwed hole 517.Shank 52 1 ends are convexly equipped with syringe needle 521, and other end outer surface makes screw thread 523, and shank 52 cooperates with screw thread 523 and locks in the screw 517 of pull bar 51 in view of the above.Compression spring 53 is nested with at pull bar 51 axial, and an end contacts with block face 513.One back-up ring 543 is arranged on the space 541 that pull bar support set 54 axially is used to lead to; Pull bar support set 54 appearances one end is provided with an interlocking anchor ring 545; Interlocking anchor ring 545 offers lockhole 547; Pull bar support set 54 places with the combination of being used to logical space 541 confession pull bars 51 and compression spring 53 and just can let the other end (upper end as shown in Figure 2) of compression spring be against on the back-up ring 543, and compression spring 53 is located in being used to logical space 541.Circulation cover 55 inner shafts are used to bore a hole 551 to opening one; And the other end is shaped on lock-joining part 553, the central siphon portion 554 of lockhole 552; Central siphon portion 554 surfaces have return port 555 and plup inlet 556, and the end inner face has screw thread 557, therefore set packing ring 558,559 in lock-joining part 553 inside; And it is relative with lock-joining part 553 with the interlocking anchor ring 545 of pull bar support set 54; Predetermined interlocking original paper interlocking combines. and pull bar 51 1 ends and pull bar 52 can stretch into central siphon portion 554, and pull bar 51 set rings recessed 515 and central siphon portion 554 inwalls formation space 61, and the resistance material back-up ring 519 of pull bar 51 ends contacts with central siphon portion 554 inwalls.It is that sealing surface cap shape is offered surface making and settlement screw thread 561 that needle seating 56 is processed the empty end of axial indent; Establish screw thread 557 in the central siphon portion 554 of other end perforate shape fill orifice 563. screw threads 561 and circulation cover 55 and be connected, the syringe needle 521 on the pull bar 52 of pull bar 51 ends can be corresponding with fill orifice 563.Device for casting is inserted on the mixing pedestal 10 with the central siphon portion 554 of circulation cover 55, and pull bar 51 1 ends expose and mix pedestal 10, and the hole clipping 511 that the end is offered supplies V-type connecting rod 40 to pass through installation respectively, but to form the interlock shape.Stretch into the corresponding confession raw material of plup inlet 556 that the circulation that mixes pedestal 10 overlaps on the 55 set central siphons 554 and flow into the pipeline of raw material, and the corresponding confession raw material backflow with another road pipeline of return port 555.56 of needle seatings make fill orifice 563 relative with sprue 11.

When the perfusion foaming raw material; Please map 2 with shown in Figure 3; Piston rod 30 moves to mixing pedestal 10 directions retraction, and interlock V-type connecting rod 40 is with axial wobble, wherein the other end of pull bar 51 synchronously two pull bars 51 of pulling the syringe needle 521 on the set shank in end 52 was opened with the fill orifice on the needle seating 56 in 563 minutes; Fill orifice 563 is communicated with plup inlet 556, raw material is got into mix pedestal 10 inside.Mix the back by sprue 11 output perfusions; So emphasis is piston rod 30, V-type connecting rod 40 and disengagement yoke 51 all to be in stress and can to guarantee that two pull bar 51 synchronization actions make two kinds of foaming compositions get into to mix in the pedestal 10 by preset proportion in can be at one time and mix, and effectively solves the product defects that causes because of the error of controlling respectively on the mechanical action generation time.

When not pouring into please with reference to Fig. 4 and shown in Figure 5; Piston rod 30 stretches out away from mixing pedestal 10; Each pull bar 51 that this moment, V-type connecting rod 40 ends connected is shifted to and is mixed pedestal 10; Make the syringe needle 521 of shank 52 intert in the fill orifice 563 of needle seating 56, and 519 obstructs of the resistance material back-up ring on the pull bar 51 are no longer exported raw material and are poured between plup inlet 556 and fill orifice 563.Pull bar 51 and encircle recessed 515 and central siphon portion 554 walls between the spacing that forms 61 just relative with plup inlet 556, return port 555, raw material can't be outpoured and can be back to Raw material pail through return port 555.The decapacitation of this structure is each pull bar 51 effectively synchronously, and to provide outside certain mixed perfusion effect, needle seating 56 all is connected with the interlocking mode with shank 52, therefore when cleaning device, can needle seating 56 and shank 52 be pulled down, so that clean.

Claims (2)

1. polyurethane foam make-up machine two component piston type mixing head mechanisms; Include and mix pedestal, cylinder block, piston rod, V-type connecting rod, two groups of piston type device for casting, it is characterized in that: said mixing pedestal is processed predetermined dimension and is offered sprue, and said cylinder block one end is provided with two mounting groove other ends and mixes pedestal and be connected and installed and be integral; Draw-in groove is offered on said piston rod top; The other end is installed in the cylinder block, and can cooperate the cylinder expanding-contracting action, and said V-type connecting rod combines with two mounting grooves of cylinder block with the centre position respectively and be movable; The other end embeds in the draw-in groove of offering on the piston rod top; Said two groups of piston type device for casting one ends are connected with connecting rod, and the other end is connected with piston rod and piston valve base, and piston rod one end is equipped with syringe needle; Corresponding with fill orifice, can open or close fill orifice and move whereby.

2. polyurethane foam make-up machine according to claim 1 two component piston type mixing head mechanisms is characterized in that: described two groups of piston type device for casting are made up of pull bar, shank, compression spring, pull bar support set, circulation cover and needle seating, and said pull bar has hole clipping for a shape and an end, and the centre is provided with a block face; It is recessed to form ring that the outer surface of the other end is provided with less external diameter, and encircle spill with the neighbour and become the inclined-plane to cooperate, and end face is provided with screw; Shank one end is provided with syringe needle, and the other end is provided with screw thread and pull bar interlocking, and the compression spring is nested with on pull rod shaft; The other end is installed on the end face, and this pull bar bracing or strutting arrangement is to be designed to run-though space, and a back-up ring is set on the precalculated position, space; Pull bar support set appearance one end is provided with the interlocking anchor ring, offers lockhole on the interlocking anchor ring, and pull bar support set accommodation space supplies the line combination of pull bar and compression spring to place; The other end of order compression spring is pressed on the back-up ring, makes compression spring location, and circulation cover inside offers is used to perforation lanes; One end is processed the lock-joining part of lockhole, and the other end is processed central siphon, and the central siphon surface offers return port and plup inlet; System screw thread in the central siphon end, at interlocking internal configurations packing ring, the interlocking face of lock-joining part and pull bar support set is relative; Combine with the interlocking original paper, pull bar one end and shank can stretch into central siphon inside, and the recessed and shaft tube inner wall formation spacing of formed ring on the pull bar; The resistance material anchor ring of tie rod end forms with central siphon portion inwall and contact, and valve seat is processed the cap shape, and screw thread is made in end outside; Offer pin hole shape fill orifice on the other end, screw thread with combine with the central siphon end set screw thread of inner face, make the syringe needle of locking bar on the shank of tie rod end can be relative with fill orifice.

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