CN202556658U

CN202556658U - Three-component piston type mixer mechanism of polyurethane foaming molding machine

Info

Publication number: CN202556658U
Application number: CN2012201378131U
Authority: CN
Inventors: 陈�峰
Original assignee: Zhejiang Ling Xin Polyurethane Co Ltd
Current assignee: Zhejiang Ling Xin Polyurethane Co Ltd
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-11-28
Anticipated expiration: 2022-03-29

Abstract

The three-component piston type mixer mechanism of polyurethane foaming molding machine mainly consists of two sets of cylinder seats and three sets of piston type injection units all set on a mixing base main body, wherein two V-shaped link rods are installed on each cylinder seat, each link rod has one end connected with the injection units, and the other end connected with a piston rod, and two link rods capable of performing relative movement are clamped and installed on one set of the injection unit. By the expansion and contraction movement of each piston rod, two adjacent injection units can be synchronously linked, or the expansion and contraction movement of two piston rods synchronously links the three sets of injection units to start/stop, to effectively control the injection and mixing proportion of the to-be-foamed raw materials. Furthermore the needle rod and the needle valve seat locked on each injection unit are easy to disassemble and clean, so as to effectively clean the injection units, and facilitate maintenance.

Description

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

Technical field

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

Background technology

General foam articles utilizes different expanded materials according to the moulding of predetermined ratio mixed foaming mostly, so polygamy has device for casting on the foaming machine, in order to the foaming raw material that fixed proportion the is provided operation of foaming.The make-up machine that is foamed into three compositions is an example; This board is equipped with three device for casting; And the corresponding material tube of each device for casting, and pass through the switching motion that pneumatic cylinder is controlled this device for casting, can select two device for casting or three device for casting material feeding foaming operations during use.Though more than have pneumatic cylinder can control the keying effect with the device for casting on the foaming machine; But because each pneumatic cylinder cooperates predetermined mechanism to open and close with the control device for casting separately; Under the error of the mechanical action of the control of the air pressure of each pneumatic cylinder and each mechanism, the real difficult device for casting of start separately reaches the effect of synchronous opening/closing, so the mixed proportion of foaming raw material and preset value generation error; And then influence product quality, so using up practicality, the kind structural design haves much room for improvement.Various in addition foaming raw materials can remain in the device for casting in the filling process that flows unavoidably; In the time of one section in the future device for casting just need clean; Because of device for casting is mostly processed the sealing shape, not easily-disassembled, so cleaning performance is unsatisfactory; Use once again and fail cleaned device for casting, very easily the flowability of raw material and the mixed proportion of stock yard are produced harmful effect.

The utility model content

Deficiency to the prior art existence; The utility model provides a kind of mixed proportion that can effectively control raw material, and the shank of each device for casting configuration and needle seating are disassembled the cleaning that helps device and the polyurethane foam make-up machine three component piston type mixing head mechanisms of maintenance easily.

For realizing above-mentioned purpose, the utility model provides following technical scheme: include a mixed base seat body, it is processed predetermined dimension and offers a sprue; Two cylinder blocks, an end are provided with two mounting grooves, and the other end is connected and installed and is integral with mixing pedestal, two piston rods, and a draw-in groove is offered on the top, and the other end is installed in the cylinder block; Four V-type connecting rods, each centre position combine to be with the mounting groove of cylinder block respectively can swing shape, and respectively has an end to be connected in the draw-in groove of piston rod; Three groups of device for casting, an end is connected with the V-type connecting rod, and the other end connects shank and needle seating, and this shank one end is provided with syringe needle, and on this needle seating fill orifice is arranged, and this fill orifice is corresponding with syringe needle.

Further be provided with and be: said three groups of device for casting are made up of a pull bar, a shank, a compression spring, a pull bar support set, a circulation cover and a needle seating; Wherein: pull bar is the axle shape; One end is provided with hole clipping, and middle is established a block face, the surface of the other end be provided with less external diameter and form the ring recessed; An and recessed resistance material back-up ring, the end face system screw of being formed with of next-door neighbour's ring; Shank, an end is convexly equipped with syringe needle, and other end surface is provided with screw thread, and this shank is connected in the screw of pull bar through screw fastening; The compression spring, be nested with pull rod shaft to, and an end is against on the back-up ring; The pull bar support set; Inner shaft is to becoming run-though space; And be formed with a back-up ring on the precalculated position in space, and pull bar support set appearance one end system is provided with an interlocking anchor ring, and offers some holes of having locked on this interlocking anchor ring; This pull bar support set supplies the combination of pull bar and compression spring to place with accommodation space, and the other end of this compression spring is by being against on the retaining edge; Circulation cover, inner shaft are to offering consistent break-through road, and an end is processed the lock-joining part with lockhole; The other end is processed central siphon portion, and offers return port and plup inlet on central siphon portion surface, and the end inner face system of central siphon portion is provided with screw thread; Join high packing ring in lock-joining part inside; The interlocking anchor ring of lock-joining part and pull bar support set is relative, combine through predetermined interlocking element interlocking, and pull bar one end and shank stretches into central siphon portion inside; And just form spacing between the centre wall of the recessed and central siphon portion of made ring on this pull bar, and the resistance material anchor ring of tie rod end contacts shape with the internal face formation of central siphon portion; Needle seating; Be the cap shape, system is provided with screw thread on the one of which end outer surface, and offers the fill orifice of a pin hole shape on the other end; Combine through the set screw thread spiral shell of central siphon portion end inner face of screw thread, and the syringe needle of interlocking on the shank of tie rod end just can be relative with fill orifice with the circulation cover.

Further be provided with and be: said three groups of device for casting are organized in regular turn and are located on the mixing head body, and the set pull bar of device for casting in centre position, place, position, and the card that the one of which end is offered is established the hole and can be made into rectangular poroid.

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

Description of drawings

Fig. 1 is the exploded view of the utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the local enlarged diagram of the utility model;

Fig. 4 is the action sketch map that stops to pour into of the utility model;

Fig. 5 is the partial structurtes enlarged diagram that stops to pour into of the utility model.

The specific embodiment

To shown in Figure 5, this polyurethane foam make-up machine three component piston type mixing head mechanisms mainly are made up of a mixed base seat body 10, two cylinders 20, two piston rods 30, four V-type connecting rods and three groups of 50 of device for casting like Fig. 1.Mixed base seat body 10 is processed reservation shape, offers a sprue 11 cylinder blocks 20 1 ends and is provided with corresponding mounting groove 21, and the other end is installed in and mixes on the pedestal 10 and one.Piston rod 30 1 ends are offered a draw-in groove 31; The other end is installed in the cylinder block 20; And under preset Pneumatic pressure, do 40 centers of expanding-contracting action V-type connecting rod and combine to be with the mounting groove 21 of cylinder block 20 and can swing shape, and respectively there is an end to be fastened in the draw-in groove 31 of piston rod 30 at two connecting rods 40 of two V-types of same cylinder block 20.Each is made up of device for casting 50 pull bar 51, a shank 52, a compression spring 53, a pull bar support set 54, a circulation cover 55 and needle seating 56.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, and 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.Make compression spring 53 location 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 backflow pass 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 relative with the interlocking anchor ring 545 of pull bar support set 54 with lock-joining part 553, predetermined interlocking original paper interlocking combines.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; The resistance material back-up ring 519 of pull bar 51 ends contacts with central siphon portion 554 inwalls. and it is that sealing surface cap shape is offered the surface and made screw thread 561, other end perforate shape fill orifice 563 that needle seating 56 is processed the empty end of axial indent.Screw thread 56

1 with the central siphon portion 554 of circulation cover 55 in establish screw thread 557 and be connected; Syringe needle 521 on the pull bar 52 of pull bar 51 ends can be inserted on the mixed base seat body 10 with the central siphon portion 554 of fill orifice 563 corresponding device for casting 50 and circulation cover 55; Pull bar 51 1 ends expose mixed base seat body 10; The hole clipping 511 that the end is offered supplies connecting rod 40 to pass through installation respectively, but to form the interlock shape.The corresponding confession raw material with the pipeline of raw material of plup inlet 556 that the circulation of stretching into mixed base seat body 10 is overlapped on the 55 set central siphons 554 flows into.And the corresponding confession raw material with another road pipeline of return port 555 refluxes.56 of needle seatings make fill orifice 563 relative with sprue 11.Three component device for casting 50 are arranged in regular turn and the mounting groove 511 of the pull bar 51 one of which ends of the device for casting 50 that mediates is processed slotted hole, and the V-type connecting rod 40 of both sides passes through unlikely another connecting rod 40 that influences in back.

When the perfusion foaming raw material, ask map 2 with shown in Figure 3; Piston rod 30 moves to mixing body 10 directions retraction; And interlock 40 is with axial wobble; Wherein two pull bars 51 of the synchronous pulling of the other end of pull bar 51 make the syringe needle 521 on the set shank in end 52 open in 563 minutes with the fill orifice on the needle seating 56; Fill orifice 563 is communicated with plup inlet 556, can makes raw material get into mixed base seat body 10 inside.Mix the back by sprue 11 output perfusions

When only injecting two kinds of foaming compositions; Can make wherein piston rod 30 actions; This moment, just the device for casting 50 of synchronous interlock piston rod 30 both sides provided two compositions perfusion operation, and the connecting rod 40 of the mounting groove 511 confession both sides of the strip hole on the device for casting 50 of middle is installed, when wherein an interlock 40 is swung; The pull bar 51 of the device for casting 50 of middle moves thereupon, and interlock is not stuck in another connecting rod 40 on the pull bar 51 equally.

This structure through piston rod 30, V-type connecting rod 40, and pull bar block the state of establishing for 51 one-tenths; In synchronization action three poles 51 guarantee that three kinds of foaming compositions can be at one time; To mix in predetermined ratio entering mixing pedestal 10 bodies; Solve raw material mixing inequality and defective that device for casting causes because of controlling the mechanical time error of doing to be produced respectively, and can not annotate other raw material by mistake.

When not pouring into please with reference to Fig. 4 and shown in Figure 5; Piston rod 30 stretches out away from mixed base seat body 10; Each pull bar 51 that this moment, connecting rod 40 ends connected is shifted to mixed base seat body 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, to clean.Its cleaning efficiency is higher.

Claims

1. polyurethane foam make-up machine three component piston type mixing head mechanisms, it is characterized in that: include a mixed base seat body, it is processed predetermined dimension and offers a sprue; Two cylinder blocks, an end are provided with two mounting grooves, and the other end is connected and installed and is integral with mixing pedestal, two piston rods, and a draw-in groove is offered on the top, and the other end is installed in the cylinder block; Four V-type connecting rods, each centre position combine to be with the mounting groove of cylinder block respectively can swing shape, and respectively has an end to be connected in the draw-in groove of piston rod; Three groups of device for casting, an end is connected with the V-type connecting rod, and the other end connects shank and needle seating, and this shank one end is provided with syringe needle, and on this needle seating fill orifice is arranged, and this fill orifice is corresponding with syringe needle.

2. polyurethane foam make-up machine according to claim 1 three component piston type mixing head mechanisms; It is characterized in that: said three groups of device for casting are made up of a pull bar, a shank, a compression spring, a pull bar support set, a circulation cover and a needle seating, and wherein: pull bar is the axle shape, and an end is provided with hole clipping; Middle is established a block face; The surface of the other end is provided with less external diameter and to form ring recessed, and the recessed resistance material back-up ring that is formed with of next-door neighbour ring, end face system screw; Shank, an end is convexly equipped with syringe needle, and other end surface is provided with screw thread, and this shank is connected in the screw of pull bar through screw fastening; The compression spring, be nested with pull rod shaft to, and an end is against on the back-up ring; The pull bar support set; Inner shaft is to becoming run-though space; And be formed with a back-up ring on the precalculated position in space, and pull bar support set appearance one end system is provided with an interlocking anchor ring, and offers some lockholes on this interlocking anchor ring; This pull bar support set supplies the combination of pull bar and compression spring to place with accommodation space, and the other end of this compression spring is by being against on the retaining edge; Circulation cover, inner shaft are to offering consistent break-through road, and an end is processed the lock-joining part with lockhole; The other end is processed central siphon portion, and offers return port and plup inlet on central siphon portion surface, and the end inner face system of central siphon portion is provided with screw thread; Join high packing ring in lock-joining part inside; The interlocking anchor ring of lock-joining part and pull bar support set is relative, combine through predetermined interlocking element interlocking, and pull bar one end and shank stretches into central siphon portion inside; And just form spacing between the centre wall of the recessed and central siphon portion of made ring on this pull bar, and the resistance material anchor ring of tie rod end contacts shape with the internal face formation of central siphon portion; Needle seating; Be the cap shape, system is provided with screw thread on the one of which end outer surface, and offers the fill orifice of a pin hole shape on the other end; Combine through the set screw thread spiral shell of central siphon portion end inner face of screw thread, and the head of interlocking on the shank of tie rod end just can be relative with fill orifice with the circulation cover.

3. polyurethane foam make-up machine according to claim 2 three component piston type mixing head mechanisms; It is characterized in that: said three groups of device for casting are organized in regular turn and are located on the mixing head body; And the set pull bar of device for casting in centre position, place, position, the card that the one of which end is offered is established the hole and can be made into rectangular poroid.