CN218803576U - Drying-free process injection molding machine - Google Patents
Drying-free process injection molding machine Download PDFInfo
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- CN218803576U CN218803576U CN202223291448.2U CN202223291448U CN218803576U CN 218803576 U CN218803576 U CN 218803576U CN 202223291448 U CN202223291448 U CN 202223291448U CN 218803576 U CN218803576 U CN 218803576U
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Abstract
The utility model provides a drying-free process injection molding machine; the plastic raw materials are put into the rubber injection cylinder, then are continuously conveyed to the plastic control propulsion section from the plastic melting propulsion section through the rotation of the feeding screw rod, the heating component coated around the outer wall of the rubber injection cylinder utilizes the plastic raw materials in the rubber injection cylinder to carry out high-temperature melting, when the plastic raw materials are conveyed to the lower part of the exhaust component, steam generated in the rubber injection cylinder is exhausted from the exhaust hole, the transmission shaft and the helical blade are driven to rotate by the hydraulic motor of the exhaust component, the plastic raw materials entering the assembly pipe are forced to return to the inner hole of the rubber injection cylinder again, the molten plastic raw materials in the rubber injection cylinder are continuously conveyed forwards, and finally the molten plastic raw materials are pushed into a forming mold and are cooled and shaped. And (3) utilizing the exhaust assembly to perform exhaust treatment on the steam in the rubber injection cylinder, so that the plastic raw material in the rubber injection cylinder is in a dry state all the time. There is no need to subject the plastic raw material to a drying treatment prior to feeding.
Description
Technical Field
The utility model relates to an injection molding machine technical field, in particular to exempt from drying process injection molding machine.
Background
An injection molding machine is a main molding device for making thermoplastic plastics or thermosetting plastics into plastic products with various shapes by using a plastic molding die.
The injection molding machine is generally including penetrating a mechanism and clamping mechanism, and clamping mechanism includes fixed die plate, movable mould board, tailboard, a plurality of pull rod, mode locking hydro-cylinder and drive assembly, the mode locking hydro-cylinder install in on the tailboard, the mode locking hydro-cylinder is connected drive assembly, in order to drive the movable mould board orientation or deviate from the fixed die plate removes, and is a plurality of the pull rod is in array arrangement on the tailboard, just the pull rod wears to locate the fixed die plate the movable mould board with the tailboard, the movable mould board is followed the extending direction of pull rod slides, penetrates a mechanism and generally includes drying assembly, reinforced subassembly, penetrates a packing element, pay-off screw rod, injecting glue motor etc. and constitute. The power transmission device comprises a glue injection motor, a driving oil cylinder and a screw driving device. However, when the existing injection molding machine is used, the raw materials need to be placed in the drying assembly for drying for 4 to 5 hours, the drying procedure occupies quite a long processing time, the injection molding efficiency is reduced, and insufficient drying of the raw materials can cause bubbles in finished plastic parts, so that the quality of finished products and the yield of mass production are affected.
The application number is 202220769117.6's chinese utility model patent discloses a but pull pole clamping mechanism and injection molding machine, wherein, but pull pole clamping mechanism includes fixed die plate, movable mould board, tailboard, a plurality of pull rod, mode locking hydro-cylinder and drive assembly, the mode locking hydro-cylinder install in on the tailboard, the mode locking hydro-cylinder is connected drive assembly, in order to drive the movable mould board orientation or deviate from the fixed die plate removes, and is a plurality of the pull rod is in array arrangement on the tailboard, just the pull rod wears to locate the fixed die plate the movable mould board with the tailboard, the movable mould board is followed the extending direction of pull rod slides. One side of the fixed template, which is far away from the movable template, is fixed with a band-type brake device, and the pull rod penetrates through the fixed template and is matched with a band-type brake of the band-type brake device. And a drawing rod device is fixed on the tail plate and connected with one end of the pull rod, which is far away from the fixed die plate, so as to drive the pull rod to move. However, the above patents still have the disadvantages of the prior art, and need to be matched with the drying component.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a drying process injection molding machine exempts from of rational in infrastructure, promotion efficiency of moulding plastics is provided.
In order to solve the technical problem, the utility model provides a drying-free process injection molding machine, which comprises an injection platform mechanism and a mold locking mechanism;
the mold locking mechanism comprises a fixed mold plate, a movable mold plate, a tail plate, a plurality of pull rods, a mold locking oil cylinder and a transmission assembly, wherein the mold locking oil cylinder is installed on the tail plate and connected with the transmission assembly so as to drive the movable mold plate to move towards or away from the fixed mold plate;
the injection platform mechanism comprises an injection rubber cylinder, a feeding screw, a rubber injection motor, a coupling, a pre-feeding seat, an injection oil cylinder, an injection platform seat, a fixed framework, a supporting frame, a driving oil cylinder, an exhaust assembly, a plurality of groups of heating assemblies, at least one group of first slide rail assemblies and at least one group of second slide rail assemblies;
the rear end of a feeding screw is connected with an injection motor through a coupler, the front end of the feeding screw extends into an injection rubber cylinder, the coupler is fixedly installed in a pre-material seat, the injection motor and the pre-material seat are arranged in a fixed framework, the direction of the first slide rail assembly is the front-back direction, a support frame is connected and fixed with the pre-material seat, the injection motor is positioned between the support frame and the pre-material seat, the upper part and the lower part of the support frame respectively extend to the front side to form a connecting part fixed with the pre-material seat, a cylinder body of an injection oil cylinder is fixedly connected to the rear part of the fixed framework, a piston rod of the injection oil cylinder extends into the fixed framework and is fixed with the rear end face of the support frame, the front end face of the fixed framework extends to form an injection head part, and the rear part of the injection rubber cylinder is fixed on the injection head part;
the fixed framework is arranged on the shooting table seat through the second sliding rail assembly, the direction of the second sliding rail assembly is also the front-back direction, the cylinder body of the driving oil cylinder is fixedly connected with the fixed framework, and the end part of the piston rod of the driving oil cylinder is fixedly connected with the outside;
the first slide rail assembly comprises a linear slide rail and two first slide blocks, the linear slide rail is fixedly connected to the fixed framework, the two first slide blocks are respectively and fixedly connected with the support frame and the expected seat, and the first slide blocks are matched with the linear slide rail;
the second slide rail assembly comprises a slide bar and two second slide blocks, the slide bar is fixedly supported on the shooting table seat, the two second slide blocks are fixedly connected with the fixed framework, and the second slide blocks are matched with the slide bar;
the feeding screw rod extends into an inner hole of the rubber injection cylinder, threads are arranged on the side wall of the feeding screw rod, a plurality of groups of heating assemblies are coated on the outer wall of the rubber injection cylinder, and a through hole communicated with the inner hole of the rubber injection cylinder is formed in the top of the side wall of the rubber injection cylinder;
exhaust subassembly is at least including the assembly pipe, the transmission shaft, helical blade and hydraulic motor, assembly pipe lower extreme fixed connection is on penetrating the packing element lateral wall, the assembly pipe communicates with each other through the through-hole with penetrating the packing element hole, hydraulic motor fixes in assembly pipe upper end, the transmission shaft upper end is fixed with hydraulic motor's output shaft, the transmission shaft is in the assembly pipe and the transmission shaft lower extreme stretches out to penetrating the packing element hole direction, helical blade fixed connection is on the transmission shaft lateral wall, open on assembly pipe upper portion has the exhaust hole, hydraulic motor's fluid import links to each other with the liquid outlet of injecting glue motor, hydraulic motor's fluid export links to each other with outside oil tank.
As the optimization of the drying-free process injection molding machine, the injection platform mechanism further comprises two sets of third sliding rail assemblies, each third sliding rail assembly comprises a guide rail and a third sliding block, the guide rails are fixedly supported on the upper portion of the fixed framework, the third sliding blocks are fixedly connected with the expected seats, and the third sliding blocks are matched with the sliding rails.
As the preferred of this exempt from dry technology injection molding machine, the piston rod of injection cylinder passes through the flange subassembly to be fixed with the support frame, the flange subassembly includes first semicircle flange, second semicircle flange and a plurality of fixing bolt, the support frame rear end face extends there is the flange seat, the flange seat rear end face is opened has the recess that supplies the tailpiece of the piston rod portion of injection cylinder to get into, the piston rod lateral wall of injection cylinder opens along its circumference direction has first positioning ring groove, the arc inner wall of first semicircle flange agrees with the piston rod lateral wall profile of injection cylinder, the arc inner wall of first semicircle flange extends has the arc boss, the arc boss of first semicircle flange and the arc boss of second semicircle flange constitute the bulge loop with the first positioning ring groove complex of piston rod jointly, a plurality of fixing bolt run through first semicircle flange and second semicircle flange respectively and agree with flange seat screw-thread fit.
As the optimization of the drying-free process injection molding machine, the fixed framework is a frame structure which is integrally cast steel.
As the optimization of the drying-free process injection molding machine, the exhaust assembly further comprises a cooling plate, the cooling plate is arranged between the hydraulic motor and the assembly pipe, an output shaft of the hydraulic motor penetrates through the cooling plate and then extends into the assembly pipe, a cooling channel for a cooling medium to flow through is arranged inside the cooling plate, and one end of the cooling channel is communicated with the external cooling medium.
Preferably, the drying-free process injection molding machine is characterized in that an extrusion section is arranged in the middle of the side wall of the feeding screw, and a plurality of extrusion lugs extend outwards from the side wall of the feeding screw in the extrusion section;
after the feeding screw rod is matched with the rubber injection cylinder, the extrusion section is positioned in an area between the through hole of the rubber injection cylinder and the feed inlet of the rubber injection cylinder, and the extrusion section of the feeding screw rod is close to the through hole of the rubber injection cylinder.
The feeding screw is characterized in that a transition section is further arranged on the side wall of the feeding screw, the transition section is close to the extrusion section, the transition section is located in an area between the extrusion section and a feed inlet of the rubber injection cylinder, the outer wall outer diameter of the feeding screw at the rear end of the transition section is smaller than that of the feeding screw at the front end of the transition section, and the outer wall outer diameter of the feeding screw along the direction from the rear end of the transition section to the front end of the transition section is gradually increased.
The side wall of the feeding screw is also provided with a first feeding section and a second feeding section, the second feeding section and the first feeding section are sequentially positioned in an area between the transition section and the rear end of the feeding screw, and the thread pitch of the thread on the side wall of the feeding screw positioned in the first feeding section is larger than that of the thread on the side wall of the feeding screw positioned in the second feeding section;
after the feeding screw rod is matched with the rubber injection cylinder, a feeding hole of the rubber injection cylinder is aligned with the feeding screw rod in the first feeding section.
As the optimization of the drying-free process injection molding machine, a three-way pipe is installed at an oil liquid inlet of a hydraulic motor, the inlet of the three-way pipe is communicated with a liquid outlet of a glue injection motor, a first outlet of the three-way pipe is communicated with the oil liquid inlet of the hydraulic motor, a second outlet of the three-way pipe is communicated with an oil tank, and a pressure relief valve is arranged on a pipeline between the second outlet of the three-way pipe and the oil tank.
After adopting such structure, the flange subassembly sets up between support frame and injection cylinder to the support frame does not contact with hydraulic motor, avoids the direct rigid connection between hydraulic motor and the injection cylinder, and support frame and flange subassembly can reduce hydraulic motor and move the transmission vibrations to the injection cylinder, reduce because of the influence of hydraulic motor vibrations to the output shaft of melt adhesive motor and the screw axiality of penetrating gluey.
The linear slide rail of the first slide rail component has small resistance, and the hydraulic motor, the rubber injection cylinder and the rubber injection screw rod can move consistently in the two sides.
Fixed skeleton is cast steel fashioned frame construction as an organic whole, and injection cylinder, second slide rail set spare and first slide rail set spare's linear slide all fix on fixed skeleton, compares among the prior art fixed skeleton and adopts split type structure, and the fixed skeleton of integration can have higher intensity, also can avoid each part of fixed skeleton vibrations to disturb and the circumstances such as resonance.
During injection, only the hydraulic motor, the injection screw and the piston rod of the injection oil cylinder act synchronously, and the injection device has the advantages of small volume, light weight and small brake inertia, thereby having higher injection precision.
The support frame is fixed with expecting the seat through upper and lower connecting portion, further reduces vibrations and conducts to the first slide rail set spare and the second slide rail set spare of both sides on, guarantees as far as possible that all moving part's both sides direction displacement is unanimous.
When the plastic injection cylinder is used, plastic raw materials are put into the injection cylinder, then the plastic raw materials are continuously conveyed to the plastic control propulsion section from the plastic melting propulsion section through the rotation of the feeding screw rod, the heating assembly coated on the periphery of the outer wall of the injection cylinder performs high-temperature melting on the plastic raw materials in the injection cylinder, and the plastic raw materials are melted into plastic in a molten state. When the plastic material is conveyed to the lower part of the exhaust assembly, steam generated in the exhaust assembly is exhausted from the exhaust hole, the transmission shaft and the helical blade are driven by the hydraulic motor of the exhaust assembly to rotate, the plastic material entering the assembly pipe is forced to return to the inner hole of the injection cylinder, the molten plastic material in the injection cylinder is conveyed forwards continuously, and finally the molten plastic material is pushed into a forming mold to be cooled and shaped.
The drying-free process injection molding machine utilizes the exhaust component to exhaust steam in the injection rubber cylinder, so that the plastic raw material in the injection rubber cylinder is always in a dry state. The drying-free process injection molding machine does not need to dry the plastic raw material for 4 to 5 hours before feeding, reduces the unfavorable working condition that the plastic raw material blocks a pump body due to overlarge suction force of a vacuum pump when the vacuum pump is used for steam treatment, and has the advantages of simple structure, low production cost and higher economic significance.
In addition, an oil inlet of the hydraulic motor is connected with a glue injection motor liquid outlet of the injection molding machine, no requirement is imposed on the rotating speed and the torque of the hydraulic motor, the plastic raw materials entering the assembly pipe can be forced to return to the inner hole of the glue injection cylinder again only by meeting the lowest operating efficiency, and the structural arrangement not only can recover the residual energy of the glue injection motor of the injection molding machine, but also can achieve the purpose of synchronously starting and stopping the glue injection motor of the injection molding machine.
As the optimization of the drying-free process injection molding machine, the two sides of the bottom of the fixed mold plate of the mold locking mechanism are respectively provided with a positioning plate, the positioning plates extend towards the injection mechanism, a plurality of positioning holes matched with bolts are formed in the positioning plates extending out of the outer side of the fixed mold plate, the positioning plates and the external mounting platform are fixed through the bolts, and reinforcing rib plates are arranged between the positioning plates and the fixed mold plate.
The injection molding machine can generate a trend of moving towards the injection mechanism to the mold locking mechanism after each injection operation, a fixed mold plate of the conventional injection molding machine is directly fixed with an external mounting platform through bolts, the fixed mold plate and the mounting platform are easy to loosen after long-time use, and the action of the injection molding machine can be vibrated after the loosening, so that the integral operation of the whole injection molding machine is influenced; after the structure is adopted, the fixed die plate is reinforced and supported by the positioning plate and the reinforcing rib plate, and the stability of the injection molding machine in long-time use is ensured.
As the optimization of the drying-free process injection molding machine, a plurality of reinforcing ribs are respectively arranged on the inner side wall and the outer side wall of the tail plate.
After adopting such structure, the stability of reinforcing tailboard guarantees the effect of moulding plastics.
As the optimization of the drying-free process injection molding machine, the mold locking mechanism further comprises four groups of machine hinge assemblies, the four groups of machine hinge assemblies are sequentially arranged in parallel, each machine hinge assembly comprises a long hinge and a hook hinge, one end of the long hinge is hinged to the movable mold plate, the other end of the long hinge is hinged to one end of the hook hinge, and the other end of the hook hinge is hinged to the tail plate.
The existing injection molding machine usually adopts a single-set machine hinge assembly or a double-set machine hinge assembly, but the small-quantity machine hinge assemblies are easy to cause the clearance of a shaft sleeve to be enlarged after being used for a long time, so that the length of a machine hinge arm is inconsistent, the hinge mold locking force of the injection molding machine is finally uneven, and the injection molding quality is influenced. After adopting such structure, this exempt from drying technology injection molding machine adopts four groups of quick-witted hinge subassemblies and can improve above-mentioned problem greatly, can keep the mode locking effect of injection molding machine for a long time.
Drawings
FIG. 1 is a front view of an embodiment of an injection molding machine for the no-dry process.
Fig. 2 is a sectional view of a front view of an injection stage mechanism in an embodiment of the no-dry process injection molding machine.
Fig. 3 is an enlarged view of a portion a of fig. 2.
FIG. 4 is a perspective view of a fixed frame in an embodiment of an injection molding machine of the drying-free process.
FIG. 5 is a perspective view of the pre-feeding seat, the injection cylinder, the supporting frame and the first slide rail assembly in the embodiment of the injection molding machine without drying process.
FIG. 6 is a cross-sectional view of a schematic diagram of an injection cylinder piston rod and flange assembly in an embodiment of the dry process free injection molding machine.
FIG. 7 is a front view of a feed screw of an injection molding machine embodiment of the present drying-free process
Fig. 8 is an enlarged view of a portion B of fig. 7.
FIG. 9 is a cross-sectional view of a top view of a cooling plate in an embodiment of the no-dry process injection molding machine.
FIG. 10 is a perspective view of a clamping mechanism in an embodiment of an injection molding machine for the drying-free process.
FIG. 11 is a second perspective view of a mold clamping mechanism in an embodiment of an injection molding machine for the drying-free process.
FIG. 12 is a perspective view of a tailgate in an embodiment of an injection molding machine in accordance with the present drying process.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1 to 12.
The drying-free process injection molding machine comprises a shooting table mechanism 1000 and a mold locking mechanism 2000.
The mold locking mechanism 2000 comprises a fixed mold plate 2010, a movable mold plate 2020, a tail plate 2030, a plurality of pull rods 2040, a mold locking cylinder 2050, a transmission assembly and four sets of machine hinge assemblies, the mold locking cylinder 2050 is installed on the tail plate 2030, the mold locking cylinder 2050 is connected with the transmission assembly to drive the movable mold plate 2020 to move towards or away from the fixed mold plate 2010, the plurality of pull rods 2040 are arranged on the tail plate 2030 in an array mode, the pull rods 2040 penetrate through the fixed mold plate 2010, the movable mold plate 2020 and the tail plate 2030, and the movable mold plate 2020 slides along the extending direction of the pull rods 2040.
The machine hinge assembly comprises a long hinge 2061, a small hinge, a hook hinge 2062 and the like, wherein one end of the long hinge 2061 is hinged with the movable template, the other end of the long hinge 2061 is hinged with one end of the hook hinge 2062, the other end of the hook hinge 2062 is hinged with the tail plate 2030, and the functions of the small hinge and other parts are consistent with the structure and the function of the machine hinge of the injection molding machine in the prior art.
The injection platform mechanism 1000 comprises an injection cylinder 1010, a feeding screw 1020, a glue injection motor 1030, a coupling 1040, a pre-injection seat 1041, an injection oil cylinder 1050, an injection platform base 1060, a fixing framework 1070, a support frame 1080, a driving oil cylinder 1090, an exhaust assembly 1100, a plurality of groups of heating assemblies 1110, two groups of first sliding rail assemblies, two groups of second sliding rail assemblies and two groups of third sliding rail assemblies.
The end face of the near end of the glue injection cylinder 1010 is provided with a discharge hole communicated with an inner hole of the glue injection cylinder 1010, the side wall of the far end of the glue injection cylinder 1010 is provided with a feed inlet communicated with the inner hole of the glue injection cylinder, the rear end of a feed screw 1020 is connected with a glue injection motor 1030 through a coupler 1040, the coupler 1040 is fixedly arranged in a pre-material seat 1041, the front end of the feed screw 1020 extends into the glue injection cylinder 1010, the glue injection motor 1030 and the pre-material seat 1041 are arranged in a fixed framework 1070, the direction of a first slide rail assembly is front and back, a support frame 1080 is fixedly connected with the pre-material seat 1041, the glue injection motor 1030 is positioned between the support frame 1080 and the pre-material seat 1041, the upper part and the lower part of the support frame 1080 respectively extend forwards to form a connecting part 1081 fixed with the pre-material seat 1041, the cylinder body of an injection cylinder 1050 is fixed at the rear part of the fixed framework 1070 through bolts, a piston rod 1051 of the injection cylinder 1050 extends into the fixed framework 1070 and is fixed with the rear end face of the support frame 1080, the front end face of the fixed framework is extended with a glue injection head 1071, the tail of the glue injection cylinder 1010 is fixed framework 1070, the tail of the glue injection cylinder 1010 is fixed framework 1070, and is fixed framework is fixed on an integrally cast steel framework structure.
The fixing framework 1070 is arranged on the shooting platform 1060 through a second sliding rail assembly, the direction of the second sliding rail assembly is the front-back direction, the cylinder body of the driving oil cylinder 1090 is fixed with the fixing framework 1070 through bolts, and the end part of the piston rod of the driving oil cylinder 1090 is fixed with the base through bolts.
The first slide rail assembly comprises a linear slide rail 1121 and two first slide blocks 1122, the linear slide rail 1121 is fixed on the fixed framework 1070 through bolts, the two first slide blocks 1122 are fixed with the support frame 1080 and the expected seat 1041 through bolts, and the first slide blocks 1122 are matched with the linear slide rail 1121.
The second slide assembly comprises a slide bar 1131 and two second sliding blocks 1132, the slide bar 1131 is fixedly supported on the shooting pot base 1060, the two second sliding blocks 1132 are fixed with the fixing framework 1070 through bolts, and the second sliding blocks 1132 are matched with the slide bar 1131.
The third slide rail assembly comprises a guide rail 1141 and a third slide block 1142, the guide rail 1141 is fixedly supported on the upper portion of the fixing framework 1070, the third slide block 1142 is fixedly welded with the expected seat 1041, and the third slide block 1142 is matched with the slide rail.
The feeding screw 1020 extends into an inner hole of the glue injection barrel 1010, threads are arranged on the side wall of the feeding screw 1020, the plurality of groups of heating assemblies 1110 are coated on the outer wall of the glue injection barrel 1010, and a through hole communicated with the inner hole of the glue injection barrel 1010 is formed in the top of the side wall of the glue injection barrel 1010;
the exhaust assembly 1100 comprises an assembly pipe 1101, a transmission shaft 1102, helical blades 1103, a cooling plate 1104 and a hydraulic motor 1105, the lower end of the assembly pipe 1101 is fixed on the side wall of the glue injection cylinder 1010, the assembly pipe 1101 is communicated with the inner hole of the glue injection cylinder 1010 through a through hole, the hydraulic motor 1105 is fixed at the upper end of the assembly pipe 1101, the upper end of the transmission shaft 1102 is fixed with an output shaft of the hydraulic motor 1105, the transmission shaft 1102 is positioned in the assembly pipe 1101, the lower end of the transmission shaft 1102 extends out towards the inner hole of the glue injection cylinder 1010, the helical blades 1103 are welded and fixed on the side wall of the transmission shaft 1102, an exhaust hole 1101a is formed in the upper portion of the assembly pipe 1101, an oil inlet of the hydraulic motor 1105 is connected with a liquid outlet of the glue injection motor 1030, and an oil outlet of the hydraulic motor 1105 is connected with an oil tank.
The cooling plate 1104 is provided between the hydraulic motor 1105 and the mounting pipe 1101, the output shaft of the hydraulic motor 1105 penetrates the cooling plate 1104 and then extends into the mounting pipe 1101, a cooling passage 1104a through which a cooling medium flows is provided inside the cooling plate 1104, and one end of the cooling passage 1104a communicates with the cooling medium outside.
A three-way pipe 1106 is installed at an oil liquid inlet of the hydraulic motor 1105, an inlet of the three-way pipe 1106 is communicated with a liquid outlet of the glue injection motor 1030, a first outlet of the three-way pipe 1106 is communicated with the oil liquid inlet of the hydraulic motor 1105, a second outlet of the three-way pipe 1106 is communicated with an oil tank, and a pressure relief valve 1107 is arranged on a pipeline between the second outlet of the three-way pipe 1106 and the oil tank.
A piston rod 1051 of the injection oil cylinder 1050 is fixed with a support frame 1080 through a flange assembly, the flange assembly comprises a first semicircular flange 1501, a second semicircular flange 1502 and a plurality of fixing bolts 1503, a flange seat 1082 extends from the rear end face of the support frame 1080, a groove for the end of the piston rod 1051 of the injection oil cylinder 1050 to enter is formed in the rear end face of the flange seat 1082, a first positioning ring groove 1051a is formed in the side wall of the piston rod 1051 of the injection oil cylinder 1050 along the circumferential direction of the side wall, an arc-shaped inner wall of the first semicircular flange 1501 is matched with the side wall profile of the piston rod 1051 of the injection oil cylinder 1050, an arc-shaped boss extends from the arc-shaped inner wall of the first semicircular flange 1501, an arc-shaped boss of the second semicircular flange 1501 forms a convex ring matched with the first positioning ring groove 1051a of the piston rod 1051, and the plurality of fixing bolts 1503 penetrate through the first semicircular flange 1501 and the second semicircular flange 1082 respectively and are matched with the thread of the flange seat 1082.
An extrusion section 1021 is arranged in the middle of the side wall of the feeding screw 1020, and a plurality of extrusion lugs 1021a extend outwards from the side wall of the feeding screw 1020 in the extrusion section 1021;
after the feeding screw 1020 is matched with the glue injection barrel 1010, the extrusion section 1021 is positioned in the area between the through hole of the glue injection barrel 1010 and the feed inlet of the glue injection barrel 1010, and the extrusion section 1021 of the feeding screw 1020 is close to the through hole of the glue injection barrel 1010.
The side wall of the feeding screw 1020 is also provided with a transition section 1022, the transition section 1022 is close to the extrusion section 1021, the transition section 1022 is located in the area between the extrusion section 1021 and the feed inlet of the glue injecting barrel 1010, the outer diameter of the outer wall of the feeding screw 1020 at the rear end of the transition section 1022 is smaller than that of the outer wall of the feeding screw 1020 at the front end of the transition section 1022, and the outer diameter of the outer wall of the feeding screw 1020 increases gradually along the direction from the rear end to the front end of the transition section 1022.
The side wall of the feed screw 1020 is also provided with a first feed section 1023 and a second feed section 1024, the second feed section 1024 and the first feed section 1023 are sequentially positioned in the area between the transition section 1022 and the rear end of the feed screw 1020, and the thread pitch of the side wall of the feed screw 1020 positioned in the first feed section 1023 is larger than that of the side wall of the feed screw 1020 positioned in the second feed section 1024;
after the feeding screw 1020 is matched with the glue injection barrel 1010, the feeding hole of the glue injection barrel 1010 is aligned with the feeding screw 1020 at the first feeding section 1023.
During the use, start injection cylinder 1050, injection cylinder 1050's piston rod 1051 passes through flange subassembly promotion support frame 1080, expect seat 1041 and hydraulic motor 1105 and remove, the flange subassembly sets up between support frame 1080 and injection cylinder 1050, avoid the rigid connection between hydraulic motor 1105 and the injection cylinder 1050, support frame 1080 and flange subassembly can reduce hydraulic motor 1105 during the operation to injection cylinder 1050 transmission vibrations, reduce because of the influence of hydraulic motor 1105 vibrations to the output shaft of melt adhesive motor and shooting gluey screw rod axiality.
The hydraulic motor 1105, the glue injection cylinder 1010 and the glue injection screw rod move in a reciprocating manner along the directions of the two sets of first slide rail assemblies and the second slide rail assemblies, the resistance of the linear slide rail 1121 of the first slide rail assembly is small, and the consistent displacement of the hydraulic motor 1105, the glue injection cylinder 1010 and the glue injection screw rod in the two sides during movement is ensured.
The fixing frame 1070 is a frame structure formed by casting steel integrally, the injection cylinder 1050, the linear slide rail 1121 of the first slide rail assembly and the slide bar 1131 of the second assembly are all fixed on the fixing frame 1070, and compared with the case that the fixing frame 1070 in the prior art adopts a split structure, the integrated fixing frame 1070 can have higher strength, and the conditions of vibration interference, resonance and the like of all parts of the fixing frame 1070 can be avoided.
The plastic raw materials do not need drying operation, the plastic raw materials are firstly put into the plastic injection cylinder 1010 from a feeding hole of the injection platform mechanism 1000, then are continuously conveyed to the plastic control propulsion section from the plastic melting propulsion section through the rotation of the feeding screw 1020, and the heating assembly 1110 coated on the periphery of the outer wall of the plastic injection cylinder 1010 performs high-temperature melting on the plastic raw materials in the plastic injection cylinder 1010 to melt the plastic raw materials into plastic in a molten state.
In the process that the plastic raw material flows from the feed inlet of the glue injection barrel 1010 to the through hole, the plastic raw material sequentially passes through the first feed section 1023, the second feed section 1024, the transition section 1022 and the extrusion section 1021, and the plastic raw material in the first feed section 1023 is normally conveyed towards the discharge outlet of the glue injection barrel 1010 by the feeding screw 1020;
after entering the second feeding section 1024, because the thread pitch of the side wall of the feeding screw 1020 in the first feeding section 1023 is larger than that of the side wall of the feeding screw 1020 in the second feeding section 1024, the second feeding section 1024 starts to preliminarily extrude the plastic raw material by changing the thread pitch of the feeding screw 1020, so that air in the plastic raw material is preliminarily discharged;
after entering the transition section 1022, because the outer diameter of the outer wall of the feeding screw 1020 is gradually increased along the direction from the far end to the near end of the transition section 1022, the air in the plastic raw material is further discharged by reducing the space between the side wall of the feeding screw 1020 and the inner wall of the glue injection barrel 1010;
after entering the extrusion section 1021, the plastic raw material is scattered by a plurality of extrusion bumps 1021a on the side wall of the feeding screw 1020, and finally, the purpose of fully separating air in the plastic raw material is achieved
The plastic material in the molten state is continuously fed forward, and when the plastic material is fed to the lower part of the exhaust assembly, the steam generated in the exhaust assembly is exhausted from the exhaust hole 1101a, and the drive shaft 1102 and the helical blade 1103 are driven to rotate by the hydraulic motor 1105 of the exhaust assembly, so that the plastic material entering the assembling pipe 1101 is forced back to the inner hole of the shooting pot 1010.
Meanwhile, the molten plastic material inside the glue injection cylinder 1010 is continuously conveyed forward to the mold locking mechanism 2000, and finally the molten plastic material is pushed into the molding mold and is cooled and shaped.
The above description is only one embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (10)
1. A drying-free process injection molding machine comprises an injection platform mechanism and a mold locking mechanism;
the mold locking mechanism comprises a fixed mold plate, a movable mold plate, a tail plate, a plurality of pull rods, a mold locking oil cylinder and a transmission assembly, wherein the mold locking oil cylinder is installed on the tail plate and connected with the transmission assembly so as to drive the movable mold plate to move towards or away from the fixed mold plate;
it is characterized in that:
the injection platform mechanism comprises an injection rubber cylinder, a feeding screw, a rubber injection motor, a coupling, a pre-feeding seat, an injection oil cylinder, an injection platform seat, a fixed framework, a supporting frame, a driving oil cylinder, an exhaust assembly, a plurality of groups of heating assemblies, at least one group of first slide rail assemblies and at least one group of second slide rail assemblies;
the rear end of a feeding screw is connected with an injection motor through a coupler, the front end of the feeding screw extends into an injection rubber cylinder, the coupler is fixedly installed in a pre-material seat, the injection motor and the pre-material seat are arranged in a fixed framework, the direction of the first slide rail assembly is the front-back direction, a support frame is connected and fixed with the pre-material seat, the injection motor is positioned between the support frame and the pre-material seat, the upper part and the lower part of the support frame respectively extend to the front side to form a connecting part fixed with the pre-material seat, a cylinder body of an injection oil cylinder is fixedly connected to the rear part of the fixed framework, a piston rod of the injection oil cylinder extends into the fixed framework and is fixed with the rear end face of the support frame, the front end face of the fixed framework extends to form an injection head part, and the rear part of the injection rubber cylinder is fixed on the injection head part;
the fixed framework is arranged on the shooting table seat through the second sliding rail assembly, the direction of the second sliding rail assembly is also the front-back direction, the cylinder body of the driving oil cylinder is fixedly connected with the fixed framework, and the end part of the piston rod of the driving oil cylinder is fixedly connected with the outside;
the first slide rail assembly comprises a linear slide rail and two first slide blocks, the linear slide rail is fixedly connected to the fixed framework, the two first slide blocks are respectively and fixedly connected with the support frame and the expected seat, and the first slide blocks are matched with the linear slide rail;
the second slide rail assembly comprises a slide bar and two second slide blocks, the slide bar is fixedly supported on the shooting table seat, the two second slide blocks are fixedly connected with the fixed framework, and the second slide blocks are matched with the slide bar;
the feeding screw rod extends into an inner hole of the rubber injection cylinder, threads are arranged on the side wall of the feeding screw rod, a plurality of groups of heating assemblies are coated on the outer wall of the rubber injection cylinder, and a through hole communicated with the inner hole of the rubber injection cylinder is formed in the top of the side wall of the rubber injection cylinder;
exhaust subassembly is at least including the assembly pipe, the transmission shaft, helical blade and hydraulic motor, assembly pipe lower extreme fixed connection is on penetrating the packing element lateral wall, the assembly pipe communicates with each other through the through-hole with penetrating the packing element hole, hydraulic motor fixes in assembly pipe upper end, the transmission shaft upper end is fixed with hydraulic motor's output shaft, the transmission shaft is in the assembly pipe and the transmission shaft lower extreme stretches out to penetrating the packing element hole direction, helical blade fixed connection is on the transmission shaft lateral wall, open on assembly pipe upper portion has the exhaust hole, hydraulic motor's fluid import links to each other with the liquid outlet of injecting glue motor, hydraulic motor's fluid export links to each other with outside oil tank.
2. The drying-free process injection molding machine as claimed in claim 1, wherein:
penetrate a mechanism still includes two sets of third slide rail set spares, and the third slide rail set spares includes guide rail and third slider, and the guide rail fixed support is on fixed skeleton upper portion, and third slider and anticipating seat fixed connection, the third slider cooperates with the slide rail.
3. The drying-free process injection molding machine of claim 2, wherein:
the piston rod of injection cylinder passes through the flange subassembly and is fixed with the support frame, the flange subassembly includes first semicircle flange, second semicircle flange and a plurality of fixing bolt, the support frame rear end face extends there is the flange seat, the flange seat rear end face is opened has the recess that supplies the tailpiece of the piston rod portion of injection cylinder to get into, the tailpiece of the piston rod wall of injection cylinder opens along its circumference direction has first locating ring groove, the arc inner wall of first semicircle flange agrees with the tailpiece of the piston rod wall profile of injection cylinder, the arc inner wall of first semicircle flange extends there is the arc boss, the arc inner wall of second semicircle flange agrees with the tailpiece of the piston rod wall profile of injection cylinder, the arc inner wall of second semicircle flange extends there is the arc boss, the arc boss of first semicircle flange and the arc boss of second semicircle flange constitute jointly with the first locating ring groove complex bulge loop of piston rod, a plurality of fixing bolt run through first semicircle flange and second semicircle flange respectively and with flange seat screw-thread fit.
4. The drying-free process injection molding machine as claimed in claim 1, wherein:
the fixed framework is a frame structure formed by integrally casting steel.
5. The drying-free process injection molding machine as claimed in claim 1, wherein:
the exhaust assembly further comprises a cooling plate, the cooling plate is arranged between the hydraulic motor and the assembly pipe, an output shaft of the hydraulic motor penetrates through the cooling plate and then extends into the assembly pipe, a cooling channel for a cooling medium to flow through is arranged inside the cooling plate, and one end of the cooling channel is communicated with the external cooling medium.
6. The drying-free process injection molding machine as claimed in claim 1, wherein:
an extrusion section is arranged in the middle of the side wall of the feeding screw, and a plurality of extrusion lugs extend outwards from the side wall of the feeding screw in the extrusion section;
after the feeding screw rod is matched with the rubber injection cylinder, the extrusion section is positioned in an area between the through hole of the rubber injection cylinder and the feed inlet of the rubber injection cylinder, and the extrusion section of the feeding screw rod is close to the through hole of the rubber injection cylinder;
the side wall of the feeding screw is also provided with a transition section, the transition section is close to the extrusion section, the transition section is positioned in the area between the extrusion section and the feed inlet of the rubber injection barrel, the outer diameter of the outer wall of the feeding screw positioned at the rear end of the transition section is smaller than that of the outer wall of the feeding screw positioned at the front end of the transition section, and the outer diameter of the outer wall of the feeding screw along the direction from the rear end of the transition section to the front end of the transition section is gradually increased;
the side wall of the feeding screw is also provided with a first feeding section and a second feeding section, the second feeding section and the first feeding section are sequentially positioned in an area between the transition section and the rear end of the feeding screw, and the thread pitch of the side wall of the feeding screw positioned in the first feeding section is larger than that of the side wall of the feeding screw positioned in the second feeding section;
after the feeding screw rod is matched with the rubber injection cylinder, a feeding hole of the rubber injection cylinder is aligned with the feeding screw rod in the first feeding section.
7. The drying-free process injection molding machine as claimed in claim 1, wherein:
the three-way pipe is installed at the oil liquid inlet of the hydraulic motor, the inlet of the three-way pipe is communicated with the liquid outlet of the glue injection motor, the first outlet of the three-way pipe is communicated with the oil liquid inlet of the hydraulic motor, the second outlet of the three-way pipe is communicated with the oil tank, and a pressure relief valve is arranged on a pipeline between the second outlet of the three-way pipe and the oil tank.
8. The drying-free process injection molding machine as claimed in claim 1, wherein:
and positioning plates are respectively arranged on two sides of the bottom of the fixed template and extend towards the direction of the injection mechanism, a plurality of positioning holes matched with bolts are formed in the positioning plates extending out of the outer side of the fixed template, the positioning plates and an external mounting platform are fixed through the bolts, and reinforcing rib plates are arranged between the positioning plates and the fixed template.
9. The drying-free process injection molding machine of claim 8, wherein:
and the inner side wall and the outer side wall of the tail plate are respectively provided with a plurality of reinforcing ribs.
10. The drying-free process injection molding machine of claim 9, wherein:
the mold locking mechanism further comprises four groups of machine hinge assemblies, the four groups of machine hinge assemblies are sequentially arranged in parallel, each machine hinge assembly comprises a long hinge and a hook hinge, one end of the long hinge is hinged to the movable mold plate, the other end of the long hinge is hinged to one end of the hook hinge, and the other end of the hook hinge is hinged to the tail plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223291448.2U CN218803576U (en) | 2022-12-08 | 2022-12-08 | Drying-free process injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223291448.2U CN218803576U (en) | 2022-12-08 | 2022-12-08 | Drying-free process injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218803576U true CN218803576U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223291448.2U Active CN218803576U (en) | 2022-12-08 | 2022-12-08 | Drying-free process injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218803576U (en) |
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2022
- 2022-12-08 CN CN202223291448.2U patent/CN218803576U/en active Active
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