CN115431464A - Opposite injection machine without middle plate structure and injection molding method thereof - Google Patents

Abstract

The invention discloses a correlation machine without a middle plate structure, which comprises a main injection system, an auxiliary injection system and a mold clamping mechanism, wherein a movable mold plate, a fixed mold plate and a removable turntable mechanism are arranged in the mold clamping mechanism, the turntable mechanism comprises a mold horizontal type positioning turntable, a mold direct-connecting positioning structure is arranged on the turntable, and an automatic adjusting device for adjusting the levelness of the turntable is arranged in the turntable mechanism. Also discloses an injection molding method of the injection molding machine without the middle plate structure. This no medium plate structure correlation machine has simplified the overall structure of injection machine, has greatly reduced the strict demand to the mould size, has reduced the installation and has adjusted the degree of difficulty, has promoted the flexibility of installation, has enlarged the thickness of mountable mould, can produce the product that has more complicated runner and structure, and application scope is more extensive, and the universalization degree is high, easy location, high efficiency, adaptability are strong. The turntable mechanism can be removed or assembled according to the production requirement, and is flexible and convenient to modify and high in applicability.

Description

Opposite injection machine without middle plate structure and injection molding method thereof

Technical Field

The invention relates to the technical field of polymer molding, in particular to a horizontal type correlation machine with a horizontal turntable, and particularly relates to a correlation machine without a middle plate structure and an injection molding method thereof.

Background

With the heat tide of domestic new energy automobiles and the vigorous development of the automobile assembly industry, a horizontal multicolor injection machine is produced in order to realize the multi-injection molding and complex process requirements of each plastic structure of the automobiles, and the common horizontal injection machine on the market still has a short plate to a certain extent due to the structural limitation, cannot fully exert the maximum efficiency of the horizontal correlation principle, and is difficult to meet the urgent requirements of the automobile assembly industry which is increasingly sophisticated and efficient.

For the horizontal turntable bijection machine in the past, the die needs to be installed twice on two sides of the middle plate respectively, and the middle plate and the front template and the middle plate and the movable template are installed in a matched mode, so that basic production requirements can be met. Firstly, a half mould is arranged on one side of a middle plate, then a mould plate on one side is assembled and positioned, after the installation is finished, the mould is opened and the half mould on the other side of the middle plate is installed, at the moment, the middle plate rotates 180 degrees, and the other two moulds are mutually positioned and installed through the installed moulds. The installation at this stage is complicated, and because the mechanical relevance of twice installation is less, the integral positioning condition of the half-moulds on the two templates and the middle plate mould after the installation still can not meet the production requirement, further mould centering and adjusting operation is needed, and a large amount of labor and time cost can be consumed. Simultaneously, because the installation demand of mould, installation a pair mould also can need lift by crane twice driving at least, carries out the assembly of mould under artifical assistance, and this process also can occupy the workshop in driving etc. and lifts by crane the equipment for a long time, can lead to appearing the circumstances that the plan is sluggish in the workshop, and to a great extent reduces production efficiency, is unfavorable for the good economic benefits of continuous output.

In addition, with conventional horizontal rotary disc machines, it is generally necessary to produce them using dedicated injection machine molds. In case of a change of production plan, for example, a single-shot product is required to be produced, in this case, although the injection machine can be modified into a conventional horizontal two-plate machine with a large mold opening stroke by removing the middle plate structure and its related components, the number of parts involved is too many, which often takes a lot of removal time, and is not in accordance with the original design purpose of the injection machine.

More importantly, due to the structural limitation of the injection machine, the distance between the plate and the template is fixed when the injection machine is opened, the mold opening distance is in a determined range, so that the mold distance is also limited, and a thicker mold cannot be used for producing products with more complicated flow channels and structures. Therefore, the development of a novel injection molding machine which is easy to position, efficient and strong in applicability is urgent.

Disclosure of Invention

The invention aims to solve the problems of complex structure, difficult positioning, low production efficiency, low generalization process, poor applicability, complex die installation, high cost and the like of the existing injection molding machine, and provides the injection molding machine without the middle plate structure, which can reduce the die installation cost of the injection molding machine, simplify the structure, enlarge the thickness of an installable die, improve the use efficiency and reduce the use cost. The injection machine can also be used for molding single-injection products, and has wider application range and high degree of passing. Meanwhile, the injection molding method of the injection molding machine without the middle plate structure is also provided.

The invention adopts the technical scheme that the invention achieves the aim that: the utility model provides a no medium plate structure correlation machine, includes main injection system, vice injection system and locking mechanism, locking mechanism in be provided with movable mould board, fixed die plate and removal formula carousel mechanism, carousel mechanism including mould horizontal positioning carousel, the carousel on be provided with mould directly and link location structure, carousel mechanism in be provided with the automatic regulating apparatus who realizes the regulation of carousel levelness. This no medium plate structure correlation machine, through the brand-new design to the correlation machine of taking the medium plate structure in the prior art, no longer set up the medium plate, design the structure for can the direct mount mould with the carousel in the carousel mechanism, the installation benchmark of mould is no longer the perpendicular reference surface of medium plate, but the horizontal reference surface of carousel, in order to realize the quick direct positioning of mould, it directly links location structure to be provided with the mould on the carousel, during production, the location that the mould can be direct quick according to the production needs is on the carousel, then carry out the compound die with the half mould on movable mould board and the fixed die plate again, can realize injecting. Because this correlation machine does not set up the medium plate, the mould that sets up on the carousel in the production process need not divide left right center half mould to separately set up, can set up as required and be integral type center mould, can use thicker mould in order to produce the product that has more complicated runner and structure, center mould adopts the mould to directly link location structure installation location moreover, and convenient operation is swift, and the installation accuracy is high moreover. Because the installation reference surface of the die is changed from the vertically arranged middle plate to the horizontal positioning turntable, in order to ensure the design of the horizontal reference surface of the turntable and the requirements of die installation precision and die assembly precision, an automatic adjusting device is arranged in the turntable mechanism and used for realizing the automatic adjustment of the levelness of the turntable. The horizontal center line of the mold is accurately aligned with the injection baseline through the automatic adjusting device during mold closing, so that accurate operation can be realized for mold closing and injection, and the levelness of the mold can be adjusted in time in the production process. This no medium plate structure correlation machine has greatly reduced the strict requirement to the mould size, has reduced the installation and has adjusted the degree of difficulty, has promoted the flexibility of installation. The overall structure of injection machine has been simplified greatly to no medium plate structure correlation machine, but enlarged the thickness of mountable mould, can produce the product that has more complicated runner and structure, application scope is more extensive, the universalization degree is high, moreover, carousel mechanism sets up and is the removal formula structure, can remove or assemble according to the needs of production, remove carousel mechanism back injection machine can be reequiped into single shooting mode, can regard as single injection molding machine to use, the repacking is nimble convenient, the suitability is strong.

Preferably, the automatic adjusting device comprises a turntable mechanism controller, a high-precision electric eye in signal connection with the turntable mechanism controller and an adaptive module integrated in the turntable controller, and the levelness of the turntable is automatically fine-adjusted by the coordination of the adaptive module integrated in the turntable controller and the high-precision electric eye. Automatic regulating apparatus is through setting up the self-adaptation module in carousel mechanism controller inside, cooperation high accuracy electric eye, carry out automatic control to carousel mechanism through carousel mechanism controller, can realize the automatic fine setting to the carousel, the difficult problem of mould location has been solved, realized not setting up the medium plate, can carry out quick accurate location to the mould on the carousel, self-adaptation module is in operating condition all the time at the compound die in-process, if there is the error that surpasss the requirement in the depth of parallelism of movable mould board and fixed die plate, can finely tune, guarantee that the compound die precision accords with the anticipated requirement. And in the production process, can detect slight size change, if the carousel levelness goes wrong, then can carry out the automatic fine setting of levelness, make the carousel levelness can remain in requiring the interval all the time, promote the stability of work.

Preferably, the mold direct-connection positioning structure comprises a center calibration hole, a reference positioning groove and a plurality of limiting fastening holes, the center calibration hole is formed in the center of the turntable, the reference positioning groove is of a long groove structure and is uniformly distributed around the center calibration hole, and the limiting fastening holes are arranged on the surface of the turntable on the outer side of the reference positioning groove in a matrix mode along the direction of the correlation axis. Because the carousel is as the horizontal reference surface of mould, in order to realize the swift portamentization of installation of mould, it directly links location structure to be provided with the mould on the carousel, it is preferred to include a center alignment hole, play the function of central point calibration in the die holding process, make things convenient for the location installation of mould, be provided with four benchmark constant head tanks around center alignment hole, the benchmark constant head tank sets up to the elongated slot structure, corresponding center mould can set up four locating pieces in center mould's installation bottom when the preparation, be used for realizing when the installation with the alignment location installation of benchmark constant head tank, when center mould location in benchmark constant head tank inside the back, fasten center mould through the spacing fastening constant head tank that is the matrix setting, thereby accomplish center mould's quick installation. The mould directly links location structure's setting for the die holding is convenient and fast more, and the location is accurate convenient. Effectively simplifying the installation procedure of the die.

Preferably, the turntable mechanism further comprises a turntable moving mechanism for driving the turntable to move axially along the die clamping mechanism, the turntable moving mechanism is provided with a turntable rotating mechanism, the turntable moving mechanism and the turntable rotating mechanism are provided with turntable limiting mechanisms, the turntable rotating mechanism is provided with a turntable lifting mechanism, and the turntable is arranged on the turntable lifting mechanism. The turntable moving mechanism is arranged to realize the integral sliding of the turntable so as to realize the die closing or die opening of the central die on the turntable and the left and right half dies on the movable die plate and the fixed die plate, and the turntable rotating mechanism is arranged to realize that the turntable drives the central die on the turntable to rotate at an angle or a station so as to meet the requirements of die closing and injection. The turntable limiting mechanism is used for limiting and positioning the position of the turntable after rotation. Because the disc surface of the turntable is used as a reference positioning surface of the mold, the requirements on the height and the levelness of the turntable are higher, and in order to meet the requirement on the levelness with high precision, a turntable lifting mechanism is arranged below the turntable so as to realize the adjustment of the height and the adjustment of the levelness of the turntable. The height of the turntable can be adjusted, the installation requirements of different die sizes can be met, and the installation flexibility is improved. Make central mould mounting means have more flexibility to select, when there is the restriction in factory building facility or machine inner space, can control the carousel and stop the not co-altitude in the perpendicular, carry out the fixed of mould and carousel, further reduce the degree of difficulty and the time human cost of installation regulation.

Preferably, the turntable moving mechanism comprises a turntable moving seat, a turntable moving oil cylinder and a turntable moving slide rail. The rotary table moving seat is connected to the rotary table moving slide rail in a sliding mode, a piston rod of the rotary table integral moving oil cylinder is connected with the rotary table moving seat, and the rotary table moving seat is driven to move through the rotary table integral moving oil cylinder, so that the whole moving of the rotary table mechanism is achieved, and die closing or die opening operation of dies on the rotary table is achieved.

Preferably, the turntable lifting mechanism comprises a main lifting mechanism and an auxiliary lifting mechanism synchronously matched with the main lifting mechanism; the auxiliary lifting mechanism is supported under the rotary table, and the main lifting mechanisms are uniformly distributed on the lower disc of the rotary table and positioned outside the auxiliary lifting mechanism. In order to meet the requirement of the levelness of a reference surface for installing the turntable as a central mold, the turntable lifting mechanism is provided with a main lifting mechanism and an auxiliary lifting mechanism, and when the turntable is used, the height of the turntable is adjusted and self-locked through the main lifting mechanism. Realize supporting spacingly to the fine tuning of carousel height through supplementary elevating system, because the carousel that main elevating system supported possess great dead weight with the mould, and the relevant subassembly of carousel needs very high motion precision in order to guarantee the accuracy of compound die, for further avoiding main elevating system to produce unexpected position change, influence carousel face horizontality and cause unusual operating mode, arranged supplementary elevating system below carousel center to promote motion structural stability. And supplementary elevating system and main elevating system synchronous coordination work can realize the altitude mixture control action more steadily, further avoids the motion abnormal conditions, promotes job stabilization nature.

Preferably, the main lifting mechanism comprises a plurality of independently controlled motor screw mechanisms, and the automatic adjusting devices are arranged in one-to-one correspondence with the motor screw mechanisms. Main elevating system adopts independent control's motor screw mechanism, can effectively realize the auto-lock at the in-process that realizes going up and down, guarantee the carousel and the equilibrium of the mould on it, every motor screw mechanism all independent control conveniently realizes the regulation of levelness, automatic regulating apparatus sets up with motor screw mechanism one-to-one, can detect slight size change, if the carousel levelness goes wrong, then can carry out the automatic fine setting of levelness through automatic regulating apparatus, make the carousel levelness can remain throughout in the requirement interval, promote the stability of work. Meanwhile, the automatic adjusting device is always in a working state in the die closing process, and if the parallelism of the movable die plate and the fixed die plate has an error exceeding the requirement, fine adjustment can be performed through the automatic adjusting device, so that the die closing precision is ensured to meet the expected requirement.

Preferably, the main lifting mechanism comprises a screw rod motor, a screw rod and a guide supporting rod, the screw rod motor is vertically arranged, the screw rod is connected to an output shaft of the screw rod motor, the guide supporting rod is in threaded connection with the screw rod, and the turntable is fixed at the upper end of the guide supporting rod. The main lifting mechanism drives the screw rod to rotate inside the guide supporting rod through the screw rod motor, so that the turntable is driven to lift, and the height of the turntable is adjusted and self-locked.

Preferably, the auxiliary lifting mechanism adopts a hinge support frame lifting structure; the auxiliary lifting mechanism comprises a hinge support arm component, a double-tooth long bolt, a support frame motor and a support frame sliding mechanism. Hinge support frame elevation structure can carry out stable support to the carousel and the mould on it, cooperates main elevating system to carry out synchronous lifting work simultaneously, guarantees the levelness and the stability of carousel.

Preferably, the hinge support arm assembly is supported below the turntable in an inward-outward opening-closing manner, the double-tooth long bolt horizontally penetrates through the hinge support arm assembly and drives the hinge support arm assembly to move inward and outward through the double-tooth screw direction to realize height adjustment of the turntable, the support frame sliding mechanism is fixed on the lower disc surface of the turntable, the support frame motor is connected with the support frame sliding mechanism in an up-and-down sliding manner, and an output shaft of the support frame motor is coaxially connected with the double-tooth long bolt and drives the double-tooth long bolt to rotate forward and backward; the double-tooth long bolt and the support frame motor are lifted together in the vertical direction and are synchronous with the movement of the main lifting mechanism. Above-mentioned structure, support frame motor during operation, the double-thread spiral can rotate under the gyroscopic force effect of support frame motor to opposite double-thread long bolt, make inside and outside removal of both sides support arm, thereby realize the regulation of carousel height, the support frame motor can carry out elevating movement in the vertical direction together with double-thread long bolt through support frame glide machanism, the support frame motor cooperates and works with the motor screw mechanism motion synchronization of equipartition, can realize more stable altitude mixture control action, further avoid the motion abnormal conditions, promote job stabilization nature.

Preferably, carousel rotary mechanism include a carousel limiting plate and gear drive, gear drive include and be connected at carousel servo motor, reduction gear and supporting gear with carousel moving mechanism, carousel servo motor and retarder connection, reduction gear and reduction gear output shaft, reduction gear and supporting gear mesh mutually, the carousel limiting plate fix on supporting gear and rotate along with supporting gear. The whole rotation of the turntable mechanism is realized through the turntable rotating mechanism, specifically, the turntable servo motor drives the speed reducer gear to transmit power to the supporting gear, the supporting gear rotates and drives the turntable limiting plate on the supporting gear to rotate, and therefore the turntable connected with the turntable limiting plate in a lifting mode is driven to rotate.

Preferably, the turntable limiting mechanism comprises a turntable collision block arranged on the turntable limiting plate, a limiting column and a limiting rod arranged on the turntable moving mechanism, one end of the turntable collision block is fixed on the turntable limiting plate, the other end of the turntable collision block extends out of the turntable limiting plate and is provided with a limiting hole at the end, and the limiting rod is fixed on the turntable moving mechanism and is driven to stretch along the horizontal direction through a limiting oil cylinder. Set up carousel stop gear, when the carousel hits the piece and rotates the angle or the station of settlement, spacing post hits the piece side and blocks spacingly to the carousel, and the gag lever post hits the piece to the carousel and stretches out to insert spacing downthehole portion and fix a position the carousel limiting plate. The extension and retraction of the limiting rod are realized by driving a limiting oil cylinder.

The technical scheme adopted by the invention for realizing the second invention purpose is as follows: an injection molding method of a correlation machine without a middle plate structure comprises the following steps:

step 1: the installation and adjustment of the mold are realized, the left half mold is fixed on the movable mold plate, the right half mold is fixed on the fixed mold plate, and the central mold with the mold cavity is directly positioned on the turntable through the positioning groove on the turntable; meanwhile, the height and the levelness of the turntable are adjusted through a turntable lifting mechanism and an automatic adjusting device;

step 2: carrying out first mold closing, namely opening a turntable moving mechanism and a mold closing mechanism to enable a turntable and a movable mold plate to simultaneously move to one side of a fixed mold plate, and carrying out mold locking after a central mold respectively realizes left and right mold closing with the movable mold and the fixed mold in place to form a left cavity and a right cavity;

and step 3: after the mold is locked, starting the main injection system and the auxiliary injection system to enable the main injection system and the auxiliary injection system to move oppositely, positioning after moving to a set injection position, and starting to perform first injection, wherein a left half product structure and a right half product structure of part of the product at different parts are respectively formed in the left cavity and the right cavity;

and 4, step 4: after the first injection is finished, the reverse operation of the step 2 is executed, the rotary disc and the movable die plate respectively move to one side far away from the fixed die plate, the die is opened, and the left half product and the right half product formed in the step 3 are respectively arranged in the two die cavities of the central die;

and 5: starting the turntable rotating mechanism to rotate the turntable, wherein the turntable drives the central mold on the turntable to rotate 180 degrees, and the positions of the left half product and the right half product are rotated 180 degrees;

step 6: performing the operation of the step 2 again to realize secondary die assembly, so that the right die cavity on the central die with the right half product is assembled with the left half die, and the left die cavity on the central die with the left half product is assembled with the right half die;

and 7: after the mold is closed for the second time, the mold is locked, the main injection system and the auxiliary injection system are started to move oppositely, the second injection is started after the main injection system and the auxiliary injection system move to the set injection position, and a complete plastic product is formed in the left cavity and the right cavity;

and 8: opening the mold again, and ejecting two complete plastic products from the central mold; and finishing the manufacture of two products at the same time.

This injection method of no medium plate structure correlation machine has greatly satisfied the complicated product injection requirement of isostructure, has reduced the too harsh requirement to the mould size, and the mould can the direct positioning on the carousel, and operations such as installation, compound die, injection are convenient and fast more, reduce the degree of difficulty and the cost that the die holding was adjusted, promote the flexibility of production, and the compound die injection is more steady, and the precision is higher, and correlation convenient and fast more, very big promotion production efficiency.

The beneficial effects of the invention are: this no medium plate structure correlation machine has simplified the overall structure of injection machine, has greatly reduced the strict demand to the mould size, has reduced the installation and has adjusted the degree of difficulty, has promoted the flexibility of installation, has enlarged the thickness of mountable mould, can produce the product that has more complicated runner and structure, and application scope is more extensive, and the universalization degree is high, easy location, high efficiency, adaptability are strong. Moreover, the turntable mechanism is arranged in a removable structure, and can be removed or assembled according to production requirements, and the injection machine can be modified into a single-injection mode after the turntable mechanism is removed, and can be used as a single-injection-table injection molding machine, so that the injection machine is flexible and convenient to modify, and has strong applicability.

Drawings

FIG. 1 is a schematic structural diagram of a correlation machine without a middle plate structure according to the present invention;

FIG. 2 is a schematic diagram of a structure of the injection machine without a middle plate in an open state according to the present invention;

FIG. 3 is a schematic structural diagram of a matched mold state of the correlation machine without the middle plate structure according to the present invention;

FIG. 4 is a schematic view of a structure of the turntable lift mechanism of the present invention in cooperation with a central mold;

FIG. 5 is a schematic diagram of a turntable lift mechanism according to the present invention;

FIG. 6 is a schematic view showing the overall structure of the turntable moving mechanism and the elevating mechanism according to the present invention;

FIG. 7 is an enlarged view at A in FIG. 6;

FIG. 8 is a schematic diagram of a turntable lift mechanism of the present invention with the turntable removed;

FIG. 9 is a schematic view of a turntable rotating mechanism according to the present invention;

in the figure: 1. a band-type brake mechanism, 2, a movable mould plate, 3, a mould, 4, a fixed mould plate, 5, a mould moving oil cylinder, 6, a whole moving oil cylinder, 7, a main injection platform plasticizing device, 8, a main injection platform guide rail, 9, a rotary table whole moving oil cylinder, 10, a mould plate pull rod, 11, a rotary table moving seat, 12, a rotary table, 13, a mould locking guide rail, 14, a movable mould plate sliding foot, 15, an auxiliary injection platform guide rail, 16, an auxiliary injection platform plasticizing device, 17, a reference positioning groove, 18, a motor screw rod mechanism, 181, a screw rod motor, 182, a screw rod, 19, a guide support rod, 191, a guide support rod body, 192, a connecting rod, 20, a support arm, 21, a double-tooth long bolt, 22, a motor fixing guide rail, 23, a rotary table limiting plate, 231, a U-shaped positioning notch, 24 and a support frame motor, 25, connecting rod pressing blocks, 26, inserting plates, 27, mounting nuts, 28, right-angle mounting plates, 29, sliding blocks, 30, backing plates, 31, left half moulds, 32, right half moulds, 33, central moulds, 34, a turntable lifting mechanism, 35, a rack, 36, locking threads, 37, driving oil cylinders, 38, driving connecting rods, 39, fixed holding blocks, 40, movable holding blocks, 41, turntable moving sliding rails, 42, a turntable servo motor, 43, a speed reducer gear, 44, a supporting gear, 45, a mode locking oil cylinder, 46, high-precision electric eyes, 47, auxiliary injection oil cylinders, 48, a speed reducer, 49, a turntable collision block, 50, limiting columns, 51, limiting rods, 52, limiting holes, 53, limiting oil cylinders, 54, central calibration holes, 55, limiting fastening holes, 56 and lifting holes.

Detailed Description

The various aspects of the invention are described in detail below with reference to specific embodiments and with reference to the following figures.

Example 1:

in the embodiment shown in fig. 1, 2, and 3, a medium-plate-free structure correlation machine includes a main injection system, an auxiliary injection system, and a mold clamping mechanism, where a movable mold plate 2, a fixed mold plate 4, and a removable turntable mechanism are disposed in the mold clamping mechanism, the turntable mechanism includes a horizontal mold positioning turntable 12, a direct mold connecting and positioning structure is disposed on the turntable 12, and an automatic adjusting device for adjusting the horizontal degree of the turntable is disposed in the turntable mechanism.

Specifically, the twin injection machine without the middle plate structure includes a frame 35, a main injection system and a sub-injection system having independent control systems, and the twin injection machine is provided with only a movable mold plate 2 and a fixed mold plate 4, and is not provided with a middle mold plate. The mold 3 comprises a left half mold 31, a right half mold 32 and a central mold 33, wherein a plurality of mold closing cavities are arranged on the central mold 33, and an ejector pin for ejecting a product is arranged in the central mold. The left half mould is arranged on the movable mould plate 2, and the right half mould is arranged on the fixed mould plate 4. The cavity structure of the mold closing cavity on the central mold 33 corresponds to different parts of the product, in this embodiment, a left mold closing cavity and a right mold closing cavity are provided on the central mold as an example. The left half die and a die-assembling cavity on the central die are matched to form a left die cavity, and a part of a product is formed in the left die cavity after die assembly and injection; and the right half mold and the die cavity on the central mold are matched to form a right side mold cavity, and the other part of the product is formed in the right side mold cavity after matched mold injection.

The main injection system comprises a main injection platform control system, a main injection platform plasticizing device 7, a main injection platform guide rail 8 and a whole moving oil cylinder 6, the auxiliary injection system comprises an auxiliary injection platform control system, an auxiliary injection platform plasticizing device 16, an auxiliary injection platform guide rail 15 and an auxiliary injection oil cylinder 47, the auxiliary injection platform guide rail 15 is arranged on the left side of the rack 35 and fixedly connected with the rack, the main injection platform guide rail 8 is arranged on the right side of the rack and fixedly connected with the right side of the rack, and the main injection platform plasticizing device 7 is arranged on the main injection platform guide rail 8 and can move along the main injection platform guide rail 8 through the driving of the whole moving oil cylinder 6. The main injection station plasticizing device 7 can inject the plasticized material into the right mold cavity to form a part of the product. The sub-shooting table plasticizing device 16 is provided on the sub-shooting table guide rail 15 and is movable along the sub-shooting table guide rail 15 by being driven by a sub-injection cylinder 47. The secondary injection station plasticizing unit 16 plasticizes the material and injects it into the left-hand mold cavity to form a portion of the article.

Four template pull rods 10 are horizontally arranged on the frame 35 along the moving direction of the movable mold, two template pull rods are arranged on the upper portion of the frame, and two template pull rods are symmetrically arranged on the lower portion and the upper portion of the frame in parallel. The stationary platen 4 is fixed to the frame 35, and the mold clamping direction of the stationary platen 4 is set toward the left side of the frame. The right end of the template pull rod 10 is arranged on the rack where the fixed template is located in a sliding mode, a mold locking oil cylinder 45 is arranged at the right end of the template pull rod 10, and the mold locking oil cylinder 45 is fixed relative to the fixed template. The left end of the template pull rod 10 passes through and is connected with the movable template 2 in a sliding way.

A mold locking guide rail 13 is fixedly connected to the frame 35, a movable mold plate runner 14 is slidably connected to the mold locking guide rail 13, the movable mold plate 2 is fixed to the movable mold plate runner 14, and the movable mold plate 2 can slide on the mold locking guide rail 13 through the movable mold plate runner 14. A mould moving oil cylinder 5 connected with the movable mould plate is arranged on the frame in parallel with the mould plate pull rod 10, and the mould moving oil cylinder 5 can pull the movable mould plate 2 to move axially along the mould plate pull rod 10 through a piston rod so as to realize mould locking and mould opening operations.

The movable mould plate 2 is provided with a band-type brake mechanism 1, and the middle part of the mould plate pull rod 10 is provided with a locking thread 36 matched with the band-type brake mechanism 1.

The contracting brake mechanism 1 is fixedly connected to the movable template 2 and tightly holds or loosens the template pull rod 10, the contracting brake mechanism 1 is driven by the driving mechanism, when the movable template 2 needs to move under the driving of the template moving oil cylinder 5, threads on the template pull rod 10 are loosened by the contracting brake mechanism 1, and when the movable template moves to a certain position and needs to be locked, the contracting brake mechanism 1 locks the template pull rod 10.

In order to realize synchronous holding operation, a template pull rod on the upper part of the frame and a template pull rod on the lower part of the frame adopt a synchronous holding brake mechanism 1. The brake mechanism 1 comprises a driving mechanism and a clamping device with a tooth socket structure, the driving mechanism comprises a driving oil cylinder 37 and a driving connecting rod 38, the clamping device comprises a fixed clamping block 39 and a movable clamping block 40, an upper fixed clamping block and an upper movable clamping block are arranged corresponding to an upper template pull rod, a lower fixed clamping block and a lower movable clamping block are arranged corresponding to a lower template pull rod, the upper fixed clamping block and the lower fixed clamping block are oppositely arranged, the upper movable clamping block and the lower movable clamping block are oppositely arranged and move, clamping and locking with the upper fixed clamping block and the lower fixed clamping block are realized, in order to realize synchronous movement of the upper movable clamping block and the lower movable clamping block, the upper movable clamping block and the lower movable clamping block are connected through a plurality of connecting rods, two ends of the driving oil cylinder are respectively fixed on the upper movable clamping block and the lower movable clamping block, and a piston rod of the driving oil cylinder are driven to move up and down to drive the upper movable clamping block and the lower movable clamping block to synchronously clamp or loosen the lower movable clamping block through up and down telescopic movement. The driving connecting rod comprises an upper connecting rod arm, a switching arm and a lower connecting rod arm, the upper end of the upper connecting rod arm is rotatably connected with the upper movable holding block, the lower end of the upper connecting rod arm is rotatably connected with the switching arm, the upper end of the lower connecting rod arm is rotatably connected with the switching arm, and the lower end of the lower connecting rod arm is movably connected with the lower movable holding block. The template pull rod is clasped or loosened through the driving oil cylinder and the driving connecting rod. The template pull rods on the front side and the rear side of the rack are respectively provided with a synchronous contracting brake mechanism 1 so as to realize synchronous locking or loosening of the front template pull rod and the rear template pull rod.

Still be provided with the removal formula carousel mechanism that can remove according to the production needs on frame 35, carousel mechanism is including mould horizontal location carousel 12, drive carousel along the carousel moving mechanism of locking mechanism axial displacement, carousel moving mechanism on be provided with carousel rotary mechanism, be provided with carousel stop gear on carousel moving mechanism and carousel rotary mechanism, carousel rotary mechanism on be provided with carousel elevating system, the carousel setting on carousel elevating system.

The rotary table 12 is provided with a mold direct-connecting positioning structure, the mold direct-connecting positioning structure comprises a center calibration hole 54, a reference positioning groove 17 and a plurality of limiting fastening holes 55, the center calibration hole is arranged at the center of the rotary table, the reference positioning groove is uniformly distributed around the center calibration hole in a long groove structure, and the limiting fastening holes are arranged in a matrix type along the direction of an opposite axis on the surface of the rotary table outside the reference positioning groove. The turntable 12 is also provided with a lifting hole 56. In this embodiment, carousel 12 is the setting of rectangle structure, be provided with four benchmark constant head tanks around central calibration hole, the benchmark constant head tank sets up to the elongated slot structure, the central mould that corresponds can set up four locating pieces in central mould's installation bottom when the preparation, with one realize when the installation with the alignment location installation of benchmark constant head tank, when central mould location in benchmark location mould inside the back, fasten the central mould through the spacing fastening fixed orifices that is the matrix setting, thereby accomplish the quick installation of central mould. The mould directly links location structure's setting for the die holding is convenient and fast more, and the location is accurate convenient. Effectively simplifying the installation procedure of the die. In order to meet the requirements of wider die positioning, the rotary table can be correspondingly replaced, and therefore, the rotary table is provided with lifting holes to facilitate replacement and lifting.

The turntable moving mechanism comprises a turntable moving seat 11, a turntable displacement oil cylinder 9 and a turntable moving slide rail 41. The turntable moving slide rail 41 is arranged on the frame 35 along the axial direction of the template pull rod 10, the turntable moving seat 11 is connected to the turntable moving slide rail 41 in a sliding manner, the turntable moving oil cylinder 9 is arranged below the fixed template 4, a piston rod of the turntable moving oil cylinder 9 is connected with the turntable moving seat 11, and the turntable moving seat 11 is driven to move through the turntable moving oil cylinder 9. The turntable moving seat 11 can drive the turntable 12 to move along the axial direction of the template pull rod 10 under the driving of the turntable whole moving oil cylinder 9.

The turntable 12 is arranged on the turntable moving base 11, the central mold 33 is directly positioned on the turntable 12, and the turntable 12 can drive the central mold 33 to rotate relatively on the turntable moving base 11. The overall rotation of the turntable 12 relative to the turntable movement base 11 is achieved by a turntable rotation mechanism.

As shown in fig. 9, the turntable rotating mechanism includes a turntable servo motor 42 provided on the turntable moving base 11, a speed reducer 48, a speed reducer gear 43, a turntable restricting plate 23, and a support gear 45. The whole rotation of the turntable is realized by driving a speed reducer gear 43 to transmit power to a supporting gear 44 connected with the turntable limiting plate 23 through a turntable servo motor 42 on the turntable moving seat 11. Namely, the turntable servo motor drives the reducer gear 43 to transmit power to the supporting gear 44, and the supporting gear 44 rotates and drives the turntable limiting plate thereon to rotate, thereby driving the turntable connected with the turntable limiting plate in a lifting manner to rotate.

Carousel stop gear hits piece 49, sets up spacing post 50 and gag lever post 51 on the carousel removes the seat including the carousel that sets up on carousel limiting plate 23, the carousel hit the one end of piece 49 and fix on carousel limiting plate 23, the carousel hits the other end that piece 49 outwards extends the carousel limiting plate and be provided with spacing hole 52 at this tip, gag lever post 51 fix on carousel removal seat 11 and can follow the horizontal direction and stretch out and draw back, when the carousel hits piece 49 and rotates the angle or the station of settlement, spacing post 50 hits the piece side and blocks spacingly to the carousel, gag lever post 51 hits the piece to the carousel and stretches out and insert spacing hole 52 inside to fix a position carousel limiting plate 23. The extension and retraction of the limiting rod 51 are realized by driving a limiting oil cylinder 53. The position of the spacing post in this embodiment is according to the rotatory 180 positions of spacing seat of carousel setting.

In order to solve the problem that the injection machine without the middle plate has too severe requirements on the size of a mold, improve the production flexibility and further reduce the installation and adjustment difficulty and cost, a turntable lifting mechanism is specially added to a turntable of the injection machine, and as shown in fig. 4 and 5, the turntable lifting mechanism comprises a main lifting mechanism and an auxiliary lifting mechanism which is synchronously matched with the main lifting mechanism to work; the auxiliary lifting mechanism is supported under the rotary table, and the main lifting mechanisms are uniformly distributed on the lower disc of the rotary table and positioned outside the auxiliary lifting mechanism.

The main lifting mechanism comprises a plurality of independently controlled motor screw rod mechanisms 18, and the automatic adjusting devices are arranged in one-to-one correspondence with the motor screw rod mechanisms 18.

The main lifting mechanism comprises a plurality of groups of motor screw rod mechanisms 18 and guide supporting rods 19 which are arranged on the turntable limiting plates 23 and rotate along with the turntable limiting plates, and the motor screw rod mechanisms are in threaded connection with the guide supporting rods. The motor screw mechanism 18 comprises a screw motor 181 and a screw 182, the guide support rod 19 comprises a guide support rod body 191 and a connecting rod 192 which are integrally arranged, and the diameter of the connecting rod 192 is smaller than that of the guide support rod body 191.

In this embodiment, four groups of motor screw rod mechanisms 18 and guide support rods 19 are installed on carousel limiting plate 23 in the equipartition, and four groups of guide support rods 19 link to each other with carousel 12, can function simultaneously or move respectively under control system's control for drive carousel up-and-down motion, make the mould mounting plane height on carousel 12 can adjust, thereby satisfy the installation demand of different mould sizes, improve the installation flexibility.

Specifically, four U-shaped positioning notches 231 are arranged on the turntable limiting plate 23, the lead screw motor 181 is vertically installed at the U-shaped positioning notches 231, the lower end of the lead screw 182 is connected with the output shaft of the lead screw motor, and the upper end of the lead screw 182 is in threaded connection with the guide support rod 19 and is fixedly connected with the guide support rod through a lead screw nut 27, so that the movement in the vertical direction can be transmitted to the connecting rod. The upper end of the connecting rod 192 of the guide support rod 19 is fixedly connected with the lower disc surface of the rotary disc through a plugboard 26 and a connecting rod pressing block 25, specifically, a U-shaped slot is arranged on the plugboard 26, a thin neck structure at the upper end of the connecting rod is inserted into the U-shaped slot, and the connecting rod pressing block is sleeved outside the plugboard.

The lifting type rotary table enables the installation mode of the central mold 33 to be more selected, when the space in a factory building or a machine is limited, the rotary table 12 can be controlled to stop at different heights of a vertical plane, the central mold 33 and the rotary table 12 are fixed, and the difficulty of installation and adjustment and the time and labor cost are further reduced. Through the setting of over-and-under type carousel mechanism, abandoned the medium plate, fixed positioning can be accomplished through installing side fastener to central mould 33 after aligning with benchmark constant head tank 17 on the carousel, direct compound die to install corresponding left half 31 on moving the fixed die plate, install right half on the fixed die plate, just can accomplish the location installation work of mould 3, can begin to put into production. The middle plate-free structure has longer die sinking stroke, can accommodate thicker dies, allows longer die runner length, can produce products with more complex structures, can be competent for more production plans, realizes high-grade production, and provides basic technical conditions for manufacturers with high-end manufacturing requirements.

Although the motor screw mechanism 18 can perform effective self-locking after the lifting signal is finished, considering that the supported rotary table 12 and the mould 3 have larger dead weight and the related components of the rotary table need very high movement precision to ensure the accuracy of mould closing, in order to further avoid unexpected position change of the guide support rod 19 and influence the horizontal degree of the rotary table surface to cause abnormal working conditions, an auxiliary lifting mechanism is also arranged below the center of the rotary table, and the auxiliary lifting mechanism adopts a hinge support frame lifting structure and is used for assisting stable lifting of the uniformly distributed motor screw mechanism 18 so as to improve the stability of the movement structure.

As shown in fig. 5, 6, 7 and 8, the auxiliary lifting mechanism adopts a hinge support frame lifting structure; the auxiliary lifting mechanism comprises a hinge support arm component, a double-tooth long bolt 31, a support frame motor 24 and a support frame sliding mechanism; the hinge support arm assembly is supported below the rotary table 12 in an inward-outward opening and closing mode, the double-tooth long bolt 21 horizontally penetrates through the hinge support arm assembly and drives the hinge support arm assembly to move inward and outward through the double-tooth screw direction to realize height adjustment of the rotary table, the support frame sliding mechanism is fixed on the lower disc surface of the rotary table, the support frame motor is connected with the support frame sliding mechanism in an up-and-down sliding mode, and an output shaft of the support frame motor is coaxially connected with the double-tooth long bolt and drives the double-tooth long bolt to rotate forward and backward; the double-tooth long bolt and the support frame motor are lifted together in the vertical direction and are synchronous with the movement of the main lifting mechanism. Specifically, the hinge support arm assembly includes a plurality of support arms 20 that hinge each other, and support arm 20 includes preceding support arm assembly and back support arm assembly, and preceding support arm assembly and back support arm assembly are rhombus hinge arm structure respectively, and preceding support arm assembly and back support arm assembly pass through the linking arm and connect, and the hinge department of support arm is provided with a pair of tooth stay bolts 21 perpendicularly to the linking arm level.

The support frame sliding mechanism comprises a motor fixed guide rail 22, a right-angle mounting plate 28, a sliding block 29 and a base plate 30. The 90-degree right-angle mounting plate 28 is fixed on the lower disc surface of the rotary disc 12, a kidney-shaped long hole is formed in the perpendicular direction of the right-angle mounting plate 28, a motor fixing guide rail 22 which moves linearly is fixed on the kidney-shaped long hole, a sliding block 29 is connected on the motor fixing guide rail 22 in a sliding mode, a base plate 30 is arranged on the sliding block 29, a support frame motor 24 is installed on the base plate 30 through a motor fixing plate of the support frame motor 24, and a transmission shaft of the support frame motor 24 is coaxially connected with the double-tooth long bolt 21. The double-thread long bolt 21 with opposite double-thread screw directions can rotate under the action of the turning force of the support frame motor 24, so that the front support arm assembly and the rear support arm assembly are driven to move inwards and outwards towards two sides, namely the rhombus height of the rhombus hinge arm is changed, and the height of the turntable 12 is adjusted. The support frame motor 24 is driven by the sliding block 29 to move on the motor fixing guide rail 22, can perform lifting motion in the vertical direction together with the double-tooth long bolt 21, and synchronously cooperates and works with the motion of the uniformly distributed motor screw rod mechanisms 18, so that more stable height adjustment action can be realized, abnormal motion conditions are further avoided, and the working stability is improved.

The turntable of the medium plate-free correlation machine needs to perform lifting action on a vertical plane, so that the production and size requirements of molds with different specifications can be flexibly adapted, after a plurality of times of lifting actions are completed, even if an additional auxiliary lifting mechanism provides support through a hinge structure, the levelness of the turntable can be challenged, the incapability of ensuring the levelness means that the precision of mold closing is influenced by a series of factors, the production quality of products can be reduced, the expected production expectation can not be achieved, and if the conditions are serious, production stagnation can be caused, so that the production plan cannot be normally promoted.

For this reason, four motor screw mechanisms in the turntable lifting mechanism of the medium plate-free correlation machine are respectively provided with automatic adjusting devices. The automatic adjusting device comprises a turntable mechanism controller, a high-precision electric eye 46 in signal connection with the turntable mechanism controller and a self-adaptive module integrated in the turntable controller, and the levelness of the turntable is automatically finely adjusted by the coordination of the self-adaptive module integrated in the turntable controller and the high-precision electric eye 46.

Four motor screw mechanism special designs into the form that can be controlled by the controller is independent, be provided with self-adaptation module in controller inside, and all be equipped with high accuracy electric eye 46 on every lead screw motor 181, high accuracy electric eye 46 can detect slight size change, if the carousel levelness goes wrong, then can cooperate with high accuracy electric eye 46 through the algorithm among the self-adaptation module of integration in the controller, change the judgement carousel position condition according to the positional information of high accuracy electric eye 46 input, a plurality of lead screw motor of controller control again is worked, carry out the automatic fine setting of levelness, make the carousel levelness can remain throughout in the required interval, promote the stability of work. Meanwhile, the self-adaptive module is always in a working state in the die closing process, and if the parallelism of the movable template and the fixed template has an error exceeding the requirement, the screw motor can be controlled to be finely adjusted through an algorithm in the controller, so that the die closing precision is ensured to meet the expected requirement.

The main connection and movement modes of the correlation machine without the middle plate structure are as follows: taking the central mold 33 provided with a left mold closing cavity and a right mold closing cavity as an example, the cavity structures of the two mold closing cavities correspond to different parts of a product, the left half mold 31 and the central mold 33 are closed to form a left mold cavity, and a part of the product is formed in the left mold cavity after mold closing and injection; the right half 32 and the center die are closed to form a right side die cavity, and the other part of the product is formed in the right side die cavity after closing and injection; after the first mold closing, the left mold cavity and the right mold cavity are respectively used for forming a part of a product. And (3) opening the mold, wherein the turntable drives the central mold to rotate 180 degrees, the right mold cavity with part of the product is rotated to the left, the mold cavity and the movable mold plate on the left are secondarily closed, and after injection is finished, the whole complete product is formed. Meanwhile, the central mold rotates the left mold cavity with part of the product to the right, and is secondarily matched with the right fixed mold plate, and after injection is completed, the whole complete product is formed. Thus, the two products can be manufactured at one time through secondary die assembly.

The central mold 33 can be provided with a plurality of mold clamping cavities as required, and can rotate in different angles in the horizontal direction as required to complete secondary mold clamping of a plurality of products, so that a plurality of products can be produced at one time.

The molds 3 are respectively arranged on the turntable 12, the movable mold plate 2 and the fixed mold plate 4 according to preset positions, specifically, the central mold 33 is fixed on the turntable 12, the left half mold 31 is fixed on the movable mold plate, and the right half mold 32 is fixed on the fixed mold plate.

The specific operation is that the turntable 12 is connected with the turntable moving seat 11, and the turntable 12 can drive the central mold to rotate relatively; the turntable moving seat 11 can drive the turntable 12 to move along the axial direction of the injection molding machine template pull rod 10 under the driving of the turntable displacement oil cylinder 9. The fixed die plate 4 is fixed with the frame 35; the movable template 2 can slide on a mold locking guide rail 13 fixedly connected on the frame through a movable template sliding foot fixedly connected on the movable template 2; the mould locking oil cylinder where the mould plate pull rod 10 is located is fixed relative to the fixed mould plate 4; the mould moving oil cylinder 5 can pull the movable mould plate 2 to move axially along the pull rod 10 through a piston rod. The contracting brake mechanism 1 is fixedly connected to the movable template 2 and driven by the driving mechanism, when the movable template 2 needs to move under the driving of the mold moving oil cylinder 5, threads on the pull rod 10 are loosened by the contracting brake mechanism 1, and when the movable template moves to a certain position and mold locking is needed, the contracting brake mechanism 1 locks the pull rod 10. And injection systems are arranged on the non-installation mold 3 sides of the fixed mold plate 4 and the movable mold plate 2. The main injection platform plasticizing device 7 at the side of the fixed die plate 4 can slide on a main injection platform guide rail 8 fixedly connected to the frame and is driven by a displacement oil cylinder 6. The main injection station plasticizing device 7 can inject the plasticized material into the mold cavity to form a part of the product. The auxiliary injection table plasticizing device 16 on the movable die plate 2 side can slide on an auxiliary injection table guide rail 15 fixed on the frame. The main injection platform plasticizing device 7 and the auxiliary injection platform plasticizing device 16 are independent of each other in control system.

As shown in fig. 2 and fig. 3, a basic implementation of a correlation machine without a middle plate structure in the present invention is: take the example of producing two plastic products of the same specification simultaneously.

Step 1: before producing a product with a new structure, the turntable moving seat 11 and the height thereof are optimized, and the central mold 33 is installed through the reference positioning groove 17 on the turntable, wherein the central mold 33 is provided with a left mold cavity and a right mold cavity in the embodiment. Meanwhile, the installation of the left half die on the movable die plate and the right half die on the fixed die plate is completed, and the following operations can be performed after the die installation is completed and the pre-production inspection of the equipment is carried out.

And 2, step: for the first mold closing, as shown in fig. 3, a turntable moving oil cylinder and a mold moving oil cylinder are opened, so that the turntable moving oil cylinder 9 drives a turntable moving seat 11 to drive a turntable 12 to move towards one side of a fixed mold plate along the axial direction of a mold plate pull rod 10, meanwhile, a mold moving oil cylinder 5 drives a movable mold plate 2 to move towards the direction of the fixed mold plate 4 together, after a central mold is respectively closed with the movable mold and the fixed mold leftwards and rightwards, a left cavity and a right cavity are formed in the mold 3, and a band-type brake mechanism 1 acts, locks and locks the mold;

and step 3: after the mold is locked, the integral moving oil cylinder 6 and the auxiliary injection oil cylinder 47 are started, the main injection platform plasticizing device 7 and the auxiliary injection platform plasticizing device 16 are respectively driven to move oppositely, when the main injection platform plasticizing device and the auxiliary injection platform plasticizing device move to a set injection position, the first injection is started, and partial product structures of different parts of plastic products with the same specification are respectively formed in the left cavity and the right cavity at the moment; the left half part and the right half part of the two products are respectively formed in the two cavities,

and 4, step 4: after the first injection is finished, the reverse operation of the step 2 is executed, the rotary disc 12 and the movable die plate 2 respectively move to one side far away from the fixed die plate, and the die is opened, as shown in fig. 2; at the moment, the two die cavities of the central die are respectively provided with half plastic products at two different parts;

and 5: starting the turntable rotating mechanism, driving the reducer gear 43 to transmit power to the supporting gear 44 by the turntable servo motor 42, driving the turntable limiting plate 23 and the turntable thereon to rotate, and driving the central mold 33 on the turntable 12 to rotate 180 degrees, so that the positions of the left half product and the right half product rotate 180 degrees; for the central mold 33 with more than two mold stations, the central mold can be positioned after rotating by corresponding angles according to actual conditions;

and 6: performing the operation of the step 2 again to realize secondary die assembly, so that the right die cavity with the right half product and the left half die are assembled, and the left die cavity with the left half product and the right half die are assembled;

and 7: after the mold is closed for the second time, the mold is locked, the rectification oil cylinder 6 and the auxiliary injection oil cylinder 47 are started, the main injection platform plasticizing device 7 and the auxiliary injection platform plasticizing device 16 are respectively driven to move oppositely again, and then the positioning is carried out after the movement to the set injection position, the second injection is started, and at the moment, a complete plastic product is formed in the left cavity and the right cavity;

and 8: opening the mold again, wherein at the moment, an ejector pin in a central mold on the turntable performs ejection action under the control of a control signal, and two complete plastic products are ejected;

and step 9: and (3) after the two products are ejected out, ending one production cycle, and starting the action of the step 2 to enter a new production cycle again.

The turntable of the medium plate-free correlation machine is provided with the reference positioning groove 17, a central mold can be fixedly positioned by installing a fastener in the limit fastening hole after being directly aligned with the reference positioning groove, and the corresponding mold half-mold is installed on the movable and fixed mold plates, so that the mold can be directly closed, the positioning and installation work of the mold can be completed, and the production can be started. Compared with a conventional horizontal correlation machine in which one die is lifted at least twice and needs to be positioned for multiple times to realize installation, the time and labor cost for installing the die are effectively reduced, the installation difficulty and the technical requirements on installation personnel are reduced, and the production efficiency is improved to a greater extent.

Compared with a conventional injection machine using dies with the same number of stations, the non-medium plate bijection machine has the advantages that the time and labor cost and difficulty are lower according to the die installation principle of the non-medium plate bijection machine, and the installation is more convenient.

If the production plan of the medium-plate-free injection machine needs to be changed, the production of single-injection products is carried out, because the medium-plate-free injection machine does not have a medium plate component, enough mold closing space can be provided after components such as a turntable moving seat, a turntable and the like and corresponding pipelines are dismounted, and the modification of a conventional single-injection two-plate machine can be completed after certain adjustment is carried out on the software program side. Due to the large distance between the fixed and movable templates of the injection machine, the injection molding machine can become a single injection platform injection molding machine with strong mold adaptability at lower modification cost, flexibly cope with the change of a production plan, and provide maximum continuous production efficiency for manufacturers adopting the product.

Compared with the same mode-locking equivalent middle-plate horizontal injection machine, the middle-plate-free injection machine has a longer mold opening stroke, can accommodate a thicker mold, allows a longer mold runner length, can produce a product with a more complex structure, can meet more production plans, realizes high-grade production, and provides basic technical conditions for manufacturers with high-end manufacturing requirements.

The middle-plate-free correlation machine can adjust the structural styles, sizes and arrangement modes of the rotary table, the pull rod, the oil cylinder, the template and other equipment parts with the same functions according to the actual product requirements, and is within the protection scope of the invention.

According to the intermediate plate-free structure correlation machine, through optimizing the mold closing system, the injection molding of products with larger thickness can be realized, the mold replacing time is saved, the mold positioning precision is improved, and multiple requirements such as single injection and double injection can be realized.

It should be noted that the above-mentioned embodiments are merely illustrative of the principles of the present invention, and that various changes and modifications may be made therein without departing from the scope of the invention as claimed. Based on the embodiments described in the present invention, all other embodiments obtained by those skilled in the art based on the technical solutions of the present application without any creative work shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a no medium plate structure correlation machine, includes main injection system, vice injection system and locking mechanism, its characterized in that: the automatic mold closing mechanism is characterized in that a movable mold plate (2), a fixed mold plate (4) and a removable turntable mechanism are arranged in the mold closing mechanism, the turntable mechanism comprises a mold horizontal type positioning turntable (12), a mold direct-connection positioning structure is arranged on the turntable (12), and an automatic adjusting device for adjusting the levelness of the turntable is arranged in the turntable mechanism.

2. The opposed-jet machine without middle plate structure as claimed in claim 1, wherein: the automatic adjusting device comprises a turntable mechanism controller, a high-precision electric eye (46) in signal connection with the turntable mechanism controller and a self-adaptive module integrated in the turntable controller, and the levelness of the turntable is automatically finely adjusted by the coordination of the self-adaptive module integrated in the turntable controller and the high-precision electric eye (46).

3. The opposed-jet machine without middle plate structure as claimed in claim 1, wherein: the mold direct-connection positioning structure comprises a center calibration hole (54), a reference positioning groove (17) and a plurality of limiting fastening holes (55), wherein the center calibration hole (54) is formed in the center of the turntable (12), the reference positioning groove (17) is of a long groove structure, the periphery of the center calibration hole (54) is uniformly distributed, and the limiting fastening holes (55) are arranged on the surface of the turntable outside the reference positioning groove (17) in a matrix mode along the direction of an opposite axis.

4. The opposed jet machine without the middle plate structure as claimed in claim 1, 2 or 3, wherein: the turntable mechanism further comprises a turntable moving mechanism for driving the turntable to move axially along the die assembly mechanism, a turntable rotating mechanism is arranged on the turntable moving mechanism, turntable limiting mechanisms are arranged on the turntable moving mechanism and the turntable rotating mechanism, a turntable lifting mechanism is arranged on the turntable rotating mechanism, and the turntable is arranged on the turntable lifting mechanism.

5. The opposed jet machine without the middle plate structure as claimed in claim 4, wherein: the turntable lifting mechanism comprises a main lifting mechanism and an auxiliary lifting mechanism which is synchronously matched with the main lifting mechanism to work; the auxiliary lifting mechanism is supported under the rotary table, and the main lifting mechanisms are uniformly distributed on the lower disc of the rotary table and positioned outside the auxiliary lifting mechanism.

6. The opposed jet machine without the middle plate structure as claimed in claim 5, wherein: the main lifting mechanism comprises a plurality of independently controlled motor screw rod mechanisms (18), and the automatic adjusting devices are arranged in one-to-one correspondence with the motor screw rod mechanisms (18); the main lifting mechanism comprises a screw rod motor (181), a screw rod (182) and a guide supporting rod (19), the screw rod motor (181) is vertically arranged, the screw rod (182) is connected to an output shaft of the screw rod motor, the guide supporting rod (19) is in threaded connection with the screw rod, and the turntable (12) is fixed at the upper end of the guide supporting rod (19).

7. The opposed jet machine without the middle plate structure as claimed in claim 5, wherein: the auxiliary lifting mechanism adopts a hinge support frame lifting structure; the auxiliary lifting mechanism comprises a hinge support arm component, a double-tooth long bolt (21) with reverse screw direction, a support frame motor (24) and a support frame sliding mechanism; the hinge support arm assembly is supported below the rotary table (12) in an inward-outward opening-closing manner, the double-tooth long bolt horizontally penetrates through the hinge support arm assembly and drives the hinge support arm assembly to move inward and outward through the double-tooth screw direction to realize height adjustment of the rotary table, the support frame sliding mechanism is fixed on the lower disc surface of the rotary table, the support frame motor (24) is connected with the support frame sliding mechanism in an up-and-down sliding manner, and an output shaft of the support frame motor is coaxially connected with the double-tooth long bolt (21) and drives the double-tooth long bolt to rotate forward and backward; the double-tooth long bolt (21) and the support frame motor (24) are lifted together in the vertical direction and are synchronous with the movement of the main lifting mechanism.

8. The opposed jet machine without the middle plate structure as claimed in claim 4, wherein: carousel rotary mechanism include carousel limiting plate (23) and gear drive, gear drive include and connect carousel servo motor (42), reduction gear (48), reduction gear (43) and supporting gear (45) with carousel moving mechanism, carousel servo motor (42) be connected with reduction gear (48), reduction gear (43) and reduction gear output shaft, reduction gear (43) mesh with supporting gear (45) mutually, carousel limiting plate (23) fix on supporting gear (45) and along with supporting gear (45) rotatory together.

9. The opposed-jet machine without middle plate structure as claimed in claim 8, wherein: carousel stop gear hit piece (49), set up spacing post (50) and gag lever post (51) on carousel moving mechanism including setting up the carousel on carousel limiting plate (23), the carousel hit the one end of piece (49) and fix on carousel limiting plate (23), the carousel hits the other end that piece (49) outwards extends the carousel limiting plate and is provided with spacing hole (52), gag lever post (51) fix on carousel moving mechanism and drive through a spacing hydro-cylinder (53) and stretch out and draw back along the horizontal direction.

10. An injection molding method of a split injection machine without a middle plate structure as claimed in any one of claims 1 to 9, characterized by comprising the steps of:

step 1: the installation and adjustment of the mold are realized, the left half mold is fixed on a movable mold plate, the right half mold is fixed on a fixed mold plate, and the central mold with a plurality of mold cavities is directly positioned on a turntable through a reference positioning groove on the turntable; meanwhile, the height and the levelness of the turntable are adjusted through a turntable lifting mechanism and an automatic adjusting device;

step 2: carrying out first die assembly, opening a turntable moving mechanism and a die assembly mechanism to enable a turntable and a movable die plate to simultaneously move to one side of a fixed die plate, and carrying out die locking after a central die respectively realizes left and right die assembly with the movable die and the fixed die in place to form a left cavity and a right cavity;

and step 3: after the mold is locked, starting the main injection system and the auxiliary injection system to enable the main injection system and the auxiliary injection system to move oppositely, positioning after moving to a set injection position, and starting to perform first injection, wherein a left half product structure and a right half product structure of part of the product at different parts are respectively formed in the left cavity and the right cavity;

and 4, step 4: after the first injection is finished, the reverse operation of the step 2 is executed, the rotary disc and the movable die plate respectively move to one side far away from the fixed die plate, the die is opened, and the left half product and the right half product formed in the step 3 are respectively arranged in the two die cavities of the central die;

and 5: starting the turntable rotating mechanism to rotate the turntable, wherein the turntable drives the central mold on the turntable to rotate 180 degrees, and the positions of the left half product and the right half product are rotated 180 degrees;

step 6: performing the operation of the step 2 again to realize secondary die assembly, so that the right die cavity on the central die with the right half product is assembled with the left half die, and the left die cavity on the central die with the left half product is assembled with the right half die;

and 7: after the mold is closed for the second time, the mold is locked, the main injection system and the auxiliary injection system are started to move oppositely, the main injection system and the auxiliary injection system are positioned after moving to the set injection position, the second injection is started, and at the moment, a complete plastic product is formed in the left cavity and the right cavity;

and 8: opening the mold again, and ejecting two complete plastic products from the central mold; and finishing the manufacture of two products at the same time.

Images