CN213260726U

CN213260726U - Multistation injection molding machine for polymer rubber and plastic

Info

Publication number: CN213260726U
Application number: CN202022109901.8U
Authority: CN
Inventors: 平涛; 乔伶云; 魏振兰; 韩玉霞
Original assignee: Beijing Huaqiang Nine Nine Auto Parts Co ltd
Current assignee: Beijing Huaqiang Nine Nine Auto Parts Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-05-25
Anticipated expiration: 2030-09-23

Abstract

The application relates to a multistation injection molding machine for polymer rubber and plastic, which comprises a rack, wherein an injection molding mechanism is arranged above the rack, the rack is rotatably connected with a turntable, the turntable is positioned below the injection molding mechanism, the upper surface of the turntable is provided with a plurality of mold assemblies, and the mold assemblies are uniformly distributed along the circumferential direction of the turntable; the mould assembly comprises a plurality of supporting rods fixedly connected to the turntable, the top ends of the supporting rods are simultaneously and fixedly connected with a fixed template, a movable template is arranged below the fixed template, and two opposite surfaces of the fixed template and the movable template are respectively provided with a cavity which is matched with each other and used for accommodating the formed section after injection molding; the support rod passes the movable mould board and is connected with the movable mould board slides, still is provided with one below of carousel and is used for driving the actuating cylinder that drives that the movable mould board goes up and down, and the hole of moulding plastics is seted up to the direction of cavity to the fixed die plate upper surface, corresponds to the last intercommunication of injection moulding mechanism and has one to insert the downthehole pipe of moulding plastics. This application has the effect that improves injection molding machine production efficiency.

Description

Multistation injection molding machine for polymer rubber and plastic

Technical Field

The application relates to the technical field of injection molding machines, in particular to a multistation injection molding machine for polymer rubber and plastic.

Background

An injection molding machine, also known as 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 device is divided into a vertical type, a horizontal type and a full-electric type. The injection molding machine can heat the plastic, and extrude the molten plastic by the thrust of a screw or a plunger and the like to fill the mold cavity.

Common injection molding machine is mostly the simplex position formula, disposes a cover half and a movable mould in the machine promptly, forms the die cavity that holds the plastic agent and go into after cover half and the mutual lock of movable mould, and inside back of the crowded die cavity of molten plastics need wait for plastics and cool off gradually inside the die cavity, and the module stop work of moulding plastics this moment to influence production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to improve injection molding machine production efficiency, this application provides a multistation injection molding machine for polymer rubber and plastic.

The application provides a multistation injection molding machine for polymer rubber and plastic adopts following technical scheme:

a multistation injection molding machine for polymer rubber and plastic comprises a rack, wherein an injection molding mechanism is arranged above the rack, a turntable is rotatably connected to the rack and is positioned below the injection molding mechanism, a plurality of mold assemblies are arranged on the upper surface of the turntable and are uniformly distributed along the circumferential direction of the turntable;

the mould assembly comprises a plurality of supporting rods fixedly connected to the turntable, the top ends of the supporting rods are simultaneously and fixedly connected with a fixed template, a movable template is arranged below the fixed template, and two opposite surfaces of the fixed template and the movable template are respectively provided with a cavity which is matched with each other and used for accommodating the formed section after injection molding; the support rod passes the movable mould board and is connected with the movable mould board slides, still is provided with one below of carousel and is used for driving the actuating cylinder that drives that the movable mould board goes up and down, drives actuating cylinder piston rod and passes the carousel and with the movable mould board rigid coupling, and the fixed die plate upper surface has seted up an injection molding hole towards the direction of cavity, corresponds to the last intercommunication of the mechanism of moulding plastics and has been used for inserting the inside pipe of moulding plastics of hole.

Through adopting above-mentioned technical scheme, when the multistation injection molding machine is at the during operation, the carousel rotates, and drive different mould subassembly and rotate to the mechanism of moulding plastics under, lift cylinder work, order about the mechanism of moulding plastics and descend, the pipe of moulding plastics inserts the downthehole portion of moulding plastics, the mechanism work of moulding plastics is the melten state with the raw materials heating and extrudes into the cavity of mould subassembly with it, thereby accomplish and mould plastics, lift cylinder work this moment, order about the pipe of moulding plastics and keep away from the mould subassembly, the carousel rotates and shifts the mould subassembly that will have accomplished the moulding plastics and wait for the cooling drawing of patterns, the carousel transports other mould subassemblies to the mechanism of moulding plastics under simultaneously, thereby begin to moving down the. The injection molding mechanism can sequentially perform injection molding on the mold assemblies on the stations, so that the working efficiency is improved, the problem that a finished product needs to be cooled and solidified in a mold when a single-station injection molding machine is processed is reduced, the time loss is caused when the demolding is waited, and the production efficiency is improved.

Optionally, a demolding hole is formed in the cavity of the movable template in the direction towards the rotary table, a plurality of demolding rods penetrate through the demolding hole, when the movable template is jacked up to the fixed template to abut against each other by the driving cylinder, the highest point of the demolding rod is flush with the bottom wall of the cavity, and when the movable template is moved to be located in the lowest stroke by the driving cylinder, the highest point of the demolding rod is higher than the highest point of the movable template.

By adopting the technical scheme, when the driving cylinder drives the movable template to slide along the height direction, the demoulding rod slides in the demoulding hole. When the movable template and the fixed template are attached to each other, the end part of the demolding rod, which is far away from the turntable, is flush with the bottom wall of the inner cavity of the movable template, and when the movable template slides to the lowest stroke under the driving of the driving cylinder, the high part of the end part of the demolding rod, which is far away from the turntable, is higher than the highest point of the movable template, so that the demolding rod ejects a finished product in the cavity of the movable template, and the demolding work is finished. Due to the arrangement of the demoulding rod, a finished product is gradually separated from the movable template along with the descending of the movable template, so that the convenience of demoulding is improved.

Optionally, a demolding fan for blowing off the injection molding finished product jacked up by the demolding rod is arranged at the edge, close to the turntable, above the turntable, and an air outlet of the demolding fan is arranged towards the edge of the turntable.

Through adopting above-mentioned technical scheme, when the carousel drove the mould and rotate to the air outlet department that is located the drawing of patterns fan, drive actuating cylinder work and order about the movable mould board and descend, finished product and movable mould board alternate segregation, and then the finished product is blown away by the drawing of patterns fan. The setting of drawing of patterns fan for the wind that the drawing of patterns fan blew out can blow off the finished product after processing from the mould subassembly, and then has made things convenient for the mould subassembly to carry out the work of moulding plastics next time.

Optionally, a collecting box for receiving the demolded product is further fixedly connected to the outer side of the turntable in the blowing direction of the demolding fan.

Through adopting above-mentioned technical scheme, the finished product that is blown out by the drawing of patterns fan falls into the collecting box to made things convenient for and concentrated the transport to the finished product.

Optionally, the rigid coupling has the mount that is used for fixed drawing of patterns fan in the frame, the mount includes two stands of rigid coupling on the frame surface, the one end that the frame was kept away from to every stand articulates there is a articulated arm, the articulated arm sets up and the articulated arm on two stands inclines each other towards the centre of a circle of carousel, the articulated arm articulates towards the one end in the centre of a circle of carousel has a connecting screw, the rigid coupling has a fixed plate on the drawing of patterns fan, the rectangular groove has been seted up on the fixed plate, connecting screw passes rectangular groove, and it has two set nut to go back screw-thread fit on the connecting screw, two set nut.

Through adopting above-mentioned technical scheme, the mount supports fixedly to the drawing of patterns fan to articulated arm and the mutual articulated of stand and the articulated of connecting screw and articulated arm have made things convenient for personnel to adjust the position of drawing of patterns fan, make inside the finished product that the drawing of patterns fan blew off can be more accurate falls into the collecting box.

Optionally, still be provided with cooling module in the frame, the mechanism of moulding plastics, cooling module, drawing of patterns fan are laid along the rotation direction of carousel in proper order, and cooling module is including setting up the cooler bin in carousel border department, and the cooler bin is the arc form and extends and with the coaxial setting of carousel, and the cooler bin is located the carousel top and the both ends of cooler bin arc direction are the opening setting, and when mould assembly rotated along with the carousel, mould assembly shifted into or shifted out the cooler bin through the opening at cooler bin both ends, still is provided with radiator fan in the cooler bin.

Through adopting above-mentioned technical scheme, when the mould was rotated to the cooling box inside by the carousel drive, radiator fan bloied to the mould subassembly surface to make mould rapid cooling, improved off-the-shelf shaping speed, and made things convenient for the later stage to off-the-shelf drawing of patterns, improved production efficiency.

Optionally, a preheating assembly for preheating the template before injection molding is further arranged on the turntable, and the preheating assembly is located on one side of the injection molding mechanism, which is away from the rotation direction of the turntable;

the preheating assembly comprises a preheating box arranged at the edge of the turntable, the preheating box extends in an arc shape and is coaxial with the turntable, openings for accommodating the die assembly to rotate in or out are respectively formed at two ends of the preheating box in the arc direction, and heating wires are arranged in the preheating box.

By adopting the technical scheme, when the mold assembly passes through the preheating box, the mold assembly is heated by the electric heating wire, and the preheated mold assembly is transferred to the lower part of the injection molding mechanism and starts to perform injection molding. The preheating assembly is arranged to preheat the die assembly before injection molding, so that the overall temperature of the die assembly is improved, the condition that the cooling speed is inconsistent when injection molding liquid is in contact with a die is reduced, and the product quality is improved.

Optionally, the openings at two ends of the preheating box are respectively provided with a heat insulation door curtain.

Through adopting above-mentioned technical scheme, the setting of thermal-insulated door curtain has reduced the inside circulation of air of preheating cabinet to keep warm to the preheating cabinet, reduced the loss of the interior temperature of preheating cabinet.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the work efficiency of the injection molding machine is improved, and the injection molding mechanism can sequentially perform injection molding on a plurality of mold assemblies through the rotation of the turntable, so that the injection molding work efficiency is improved;

2. the convenience of injection molding machine drawing of patterns has been improved, when mould subassembly rotated to drawing of patterns fan department, drove actuating cylinder drive movable mould board and descend, and the finished product is separated with the movable mould board and is blown in the collecting box by the drawing of patterns fan under the effect of stripper rod in, has made things convenient for the next work of moulding plastics of mould subassembly, has improved the continuity of production.

Drawings

FIG. 1 is a schematic view of the overall structure of a multi-station injection molding machine;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 and illustrating the injection mechanism injecting plastic into the mold assembly;

FIG. 3 is a schematic view showing the installation positions of the fixing frame and the demolding fan;

fig. 4 is a schematic view showing the internal structure of the preheating chamber.

Description of reference numerals: 1. a frame; 11. a hole of abdication; 2. a turntable; 21. a drive motor; 3. a mold assembly; 31. a support bar; 32. fixing the template; 33. a movable template; 34. injection molding holes; 35. a driving cylinder; 36. demoulding holes; 37. a stripper bar; 4. an injection molding mechanism; 41. injection molding a tube; 42. a hopper; 43. mounting a plate; 44. a lifting cylinder; 45. a slide bar; 46. a sliding frame; 5. a cooling assembly; 51. a cooling tank; 52. a heat radiation fan; 53. a first mounting member; 6. a demoulding fan; 61. a fixed mount; 611. a column; 612. an articulated arm; 613. connecting a screw rod; 614. a fixing plate; 615. a strip groove; 616. positioning a nut; 62. a collection box; 7. a preheating assembly; 71. a preheating box; 72. a second mount; 73. an electric heating wire; 74. a heat-insulating door curtain.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses polymer multistation injection molding machine for rubber and plastic. Referring to fig. 1, the device comprises a frame 1, wherein a turntable 2 is rotatably connected to the frame 1, a rotating shaft of the turntable 2 is vertically arranged, a driving motor 21 for driving the turntable 2 to rotate is further fixedly connected in the frame 1, and an output shaft of the driving motor 21 is vertically arranged upwards and coaxially and fixedly connected with the turntable 2. Be provided with a plurality of mould subassembly 3 on the carousel 2, a plurality of mould subassembly 3 set up in the border department of carousel 2 to along carousel 2's circumference evenly distributed. An injection molding mechanism 4, a cooling component 5, a demolding fan 6 and a preheating component 7 are fixedly connected to the frame 1 in sequence along the rotation direction of the turntable 2.

As shown in fig. 1 and fig. 2, the mold assembly 3 includes four support rods 31 vertically and fixedly connected to the upper surface of the turntable 2, the end portions of the four support rods 31 far away from the turntable 2 are simultaneously and fixedly connected to a fixed mold plate 32, the fixed mold plate 32 is rectangular as a whole, the four support rods 31 are located at the end corners of the fixed mold plate 32, a movable mold plate 33 is arranged below the fixed mold plate 32, and the movable mold plate 33 is simultaneously sleeved on the four support rods 31 and is connected to the support rods 31 in a sliding manner. The opposite sides of the fixed template 32 and the movable template 33 are respectively provided with a cavity for accommodating the injection molding part, the upper surface of the fixed template 32 is also provided with an injection molding hole 34, the injection molding hole 34 is communicated with the cavity inside the fixed template 32, and when the fixed template 32 and the movable template 33 are attached to each other, the cavity on the fixed template 32 and the cavity in the movable template 33 are buckled with each other. The injection liquid is injected into the cavity through the injection hole 34, and the required part finished product is formed after the injection liquid is cooled and solidified.

As shown in fig. 1 and 2, the mold plate assembly further includes a driving cylinder 35 disposed on one side of the rotary table 2 away from the fixed mold plate 32, a yielding hole 11 disposed coaxially with the rotary table 2 is disposed on one side of the corresponding frame 1 facing the rotary table 2, the driving cylinder 35 is disposed in the yielding hole 11 and a body of the driving cylinder 35 is fixedly connected to the rotary table 2, a piston rod of the driving cylinder 35 is disposed parallel to the length direction of the supporting rod 31, and the piston rod of the driving cylinder 35 passes through the rotary table 2 and is fixedly connected to the movable mold plate 33. When the driving cylinder 35 works, the piston rod of the driving cylinder 35 pushes the movable template 33 to slide along the length direction of the supporting rod 31, and when the extension of the piston rod of the driving cylinder 35 reaches the maximum, the movable template 33 and the fixed template 32 are attached to each other.

As shown in fig. 1 and fig. 2, the injection mechanism 4 is located above the rotating disc 2 and near the edge inside the rotating disc 2, an injection port of the injection mechanism 4 is vertically arranged downward and communicated with an injection pipe 41, the top end of the injection mechanism 4 is also communicated with a hopper 42 for storing solid raw materials, when the rotating disc 2 rotates and drives the module assembly to rotate to the position right below the injection pipe 41, the injection mechanism 4 works, the solid raw materials in the hopper 42 enter the injection mechanism 4 and are heated to a molten state by the injection mechanism 4, the molten injection liquid is further extruded into a cavity inside the fixed mold plate 32 and the movable mold plate 33 by the injection mechanism 4 through the injection pipe 41, and the injection holes 34. The injection molding mechanism 4 is fixedly connected with an installation plate 43, the other end of the installation plate 43 is vertically and fixedly connected with two sliding rods 45, the rack 1 is also fixedly connected with a sliding frame 46 positioned on the outer side of the turntable 2, and the two sliding rods 45 penetrate through the sliding frame 46 and are in sliding connection with the sliding frame 46. A lifting cylinder 44 for driving the mounting plate 43 to lift is further fixedly connected to the frame 1, and a piston rod of the lifting cylinder 44 passes through the sliding frame 46 and is slidably connected with the sliding frame 46. When the lifting cylinder 44 works, the lifting cylinder 44 drives the mounting plate 43 to slide along the height direction, so as to drive the injection molding pipe 41 to be close to or far away from the fixed template 32.

When the multi-station injection molding machine works, the turntable 2 rotates and drives different mold assemblies 3 to rotate to the position under the injection molding mechanism 4, the lifting cylinder 44 works to drive the injection molding mechanism 4 to descend, the injection molding pipe 41 is inserted into the injection molding hole 34, the injection molding mechanism 4 works to heat raw materials into a molten state and extrude the raw materials into a cavity of the mold assembly 3, so that injection molding is completed, the lifting cylinder 44 works to drive the injection molding pipe 41 to be far away from the mold assembly 3, the turntable 2 rotates to transfer the mold assembly 3 which has completed injection molding to the cooling assembly 5, and the downward moving mold assembly 3 passing through the preheating assembly 7 is conveyed to the position under the injection molding mechanism 4, so that the injection molding work of the downward moving mold assembly 3 is started. The injection molding mechanism 4 can sequentially perform injection molding on the mold assemblies 3 on a plurality of stations, so that the working efficiency is improved, and the time loss caused by waiting for the cooling and solidification of a finished product in a mold and waiting for demolding during the processing of a single-station injection molding machine is reduced.

As shown in fig. 2, one surface of the movable mold plate 33 facing the turntable 2 is provided with a plurality of mold releasing holes 36 communicating with the internal cavity, the number of the mold releasing holes 36 is four according to the specific shape of the internal cavity of the movable mold plate 33, a mold releasing rod 37 is provided in each mold releasing hole 36, the mold releasing rod 37 is inserted into the mold releasing hole 36 and the mold releasing rod 37 is fixedly connected with the turntable 2, and when the driving cylinder 35 drives the movable mold plate 33 to slide along the height direction, the mold releasing rod 37 slides in the mold releasing hole 36. When the movable die plate 33 and the fixed die plate 32 are attached to each other, the end of the demolding rod 37 far from the turntable 2 is flush with the bottom wall of the inner cavity of the movable die plate 33, and when the movable die plate 33 slides to the lowest stroke under the driving of the driving cylinder 35, the end of the demolding rod 37 far from the turntable 2 is higher than the highest point of the movable die plate 33, so that the demolding rod 37 ejects the finished product in the cavity of the movable die plate 33, and the demolding operation is completed. The arrangement of the demoulding rod 37 enables the finished product to be gradually separated from the movable mould plate 33 along with the descending of the movable mould plate 33, and the convenience of demoulding is improved.

As shown in fig. 1 and fig. 3, the demolding blower 6 is located on one side of the turntable 2 far away from the injection molding mechanism 4, and an air outlet of the demolding blower 6 is arranged towards the outer side of the turntable 2, and the frame 1 is further provided with a fixing frame 61 for fixing the demolding blower 6. When the turntable 2 drives the mold assembly 3 to rotate to the air outlet of the demolding fan 6, the driving cylinder 35 works and drives the movable template 33 to descend, the finished product is separated from the movable template 33, and then the finished product is blown away by the demolding fan 6. The setting of drawing of patterns fan 6 for the finished product after processing can be blown away from mould subassembly 3 to the wind that drawing of patterns fan 6 blew out, and then made things convenient for mould subassembly 3 to carry out the work of moulding plastics next time. The frame 1 is fixedly connected with a collection box 62 in the blowing direction of the demolding fan 6, the collection box 62 is arranged above in an opening mode, and a finished product blown out by the demolding fan 6 falls into the collection box 62, so that the finished product is conveniently carried, and the convenience in operation of workers is improved.

As shown in fig. 3, the fixing frame 61 includes two upright posts 611 vertically fixed on the frame 1, and the two upright posts 611 are arranged along the circumferential direction of the turntable 2. The end of the upright 611 facing away from the frame 1 is hinged with a hinge arm 612, the hinge arm 612 is arranged along the radial direction of the turntable 2, and the hinge axis of the hinge arm 612 and the upright 611 is arranged along the tangential direction of the turntable 2, so that the two hinge arms 612 are inclined to each other. The end of the hinge arm 612 away from the upright 611 is hinged with a connecting screw 613, and the connecting screw 613 is horizontally arranged with the hinge axis of the hinge arm 612 and is arranged perpendicular to the length direction of the hinge arm 612. A fixing plate 614 is fixedly connected to the demolding fan 6, two ends of the fixing plate 614 protrude out of the demolding fan 6, two ends of the fixing plate 614 are respectively provided with a groove 615 towards the middle, and the two surfaces of the fixing plate 614 are simultaneously penetrated by the grooves 615. The connecting screw 613 penetrates the strip groove 615, and two positioning nuts 616 are further in threaded fit with the connecting screw 613, and the two positioning nuts 616 are respectively located on two sides of the fixing plate 614, so that the fixing plate 614 is clamped and fixed through the threaded fit of the two positioning nuts 616 and the connecting screw 613, and the demolding fan 6 is further fixed. The fixing frame 61 supports and fixes the demolding fan 6, and the mutual hinge joint of the hinge arm 612 and the upright post 611 and the hinge joint of the connecting screw 613 and the hinge arm 612 facilitate the adjustment of the position of the demolding fan 6 by personnel, so that a finished product blown out by the demolding fan 6 can more accurately fall into the collecting box 62.

As shown in fig. 1 and 4, a cooling assembly 5 is located between the injection mechanism 4 and the demolding fan 6, and is used for cooling the injection mold after injection, so that the injection molded part inside the mold is cooled, solidified and molded. The cooling assembly 5 comprises a cooling box 51 arranged above the turntable 2, and the side of the cooling box 51 facing the turntable 2 is provided with an opening. The cooling box 51 extends in an arc shape as a whole, the cooling box 51 is provided coaxially with the turntable 2, and both ends of the cooling box 51 in the arc direction are open. A first mounting part 53 is fixedly connected to the cooling box 51, and the other end of the first mounting part 53 is fixedly connected to the frame 1, so that the cooling box 51 is suspended above the turntable 2, and the abrasion caused by the contact of the cooling box 51 and the turntable 2 is reduced. The mold assemblies 3 can be rotated in and out from both ends of the cooling box 51 while the turntable 2 is rotated. A heat dissipation fan 52 is further fixed on the side wall of the cooling box 51 located at the inner ring, and an air outlet of the heat dissipation fan 52 is disposed toward the inside of the cooling box 51. When the mould is driven by carousel 2 and is rotated to inside cooling box 51, radiator fan 52 bloies to mould subassembly 3 surface to make mould rapid cooling, improved off-the-shelf shaping speed, and made things convenient for the later stage to off-the-shelf drawing of patterns, improved production efficiency.

As shown in fig. 4, the preheating assembly 7 includes a preheating box 71, the preheating box 71 is located on one side of the turntable 2 away from the cooling box 51, one side of the preheating box 71 facing the turntable 2 is provided with an opening, the whole preheating box 71 extends in an arc shape, and two ends of the preheating box 71 are respectively provided with an opening for accommodating the mold assembly 3 to rotate in or out. The preheating box 71 is further fixedly connected with a second mounting piece 72, the other end of the second mounting piece 72 is fixedly connected with the rack 1, and the preheating box 71 is fixed on the rack 1 through the second mounting piece 72 and is suspended above the turntable 2. A plurality of heating wires 73 are fixedly connected in the preheating box 71, when the mold assembly 3 passes through the preheating box 71, the mold assembly 3 is heated by the heating wires 73, and the preheated mold assembly 3 is transferred below the injection molding mechanism 4 and starts to perform injection molding.

When the molten injection molding liquid is injected into the mold plate assembly, if the temperature of the mold is too low, the injection molding liquid which is firstly contacted with the mold can be rapidly cooled and solidified, so that a finished product after injection molding is layered, or defects are generated inside the finished product, and the performance of the finished product is influenced. Preheating assembly 7's setting preheats before moulding plastics mould assembly 3 to improve mould assembly 3's bulk temperature, reduced because when moulding plastics liquid and mould contact, the inconsistent condition of cooling rate has improved product quality.

As shown in fig. 4, two openings at two ends of the preheating box 71 in the arc direction are respectively provided with a heat-insulating door curtain 74, the upper end of the heat-insulating door curtain 74 is fixedly connected with the preheating box 71, and other positions of the heat-insulating door curtain 74 naturally droop, so that the two ends of the preheating box 71 are sealed, the air circulation inside the preheating box 71 is reduced, the preheating box 71 is insulated, and the heat-insulating door curtain 74 is made of a flexible material, so that the mold assembly 3 is not influenced to enter or exit the preheating box 71.

The implementation principle of the embodiment of the application is as follows: when the multi-work injection molding machine works, the mold assembly 3 is firstly heated in the preheating box 71 and then conveyed to the position below the injection molding mechanism 4 through the rotary table 2, the lifting cylinder 44 works to drive the injection molding mechanism 4 to descend, so that the injection molding pipe 41 is inserted into the injection molding hole 34, the injection molding mechanism 4 starts injection molding, after injection molding is completed, the lifting cylinder 44 drives the injection molding mechanism 4 to ascend, and then the rotary table 2 rotates to convey the mold assembly 3 which has completed injection molding into the cooling box 51 for cooling. After the second set of mold assemblies 3 completes injection molding, the turntable 2 rotates to convey the first set of mold assemblies 3 to the demolding fan 6, the driving cylinder 35 works and drives the movable mold plate 33 to move downwards, the finished parts are pushed by the demolding rod 37 to be separated from the movable mold plate 33, and the finished parts are blown off from the mold assemblies 3 by airflow blown out by the demolding fan 6 and fall into the collection box 62. The mold assembly 3 after demolding rotates along with the turntable 2 to the preheating tank 71 to be preheated by the heating wire 73, and waits for the next injection molding.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a polymer multistation injection molding machine for rubber and plastic, includes frame (1), and frame (1) top is provided with injection moulding mechanism (4), its characterized in that: the injection molding machine is characterized in that a turntable (2) is rotatably connected to the rack (1), the turntable (2) is located below the injection molding mechanism (4), a plurality of mold assemblies (3) are arranged on the upper surface of the turntable (2), and the mold assemblies (3) are uniformly distributed along the circumferential direction of the turntable (2);

the mould assembly (3) comprises a plurality of supporting rods (31) fixedly connected to the turntable (2), the top ends of the supporting rods (31) are fixedly connected with a fixed template (32), a movable template (33) is arranged below the fixed template (32), and two opposite surfaces of the fixed template (32) and the movable template (33) are provided with cavities which are matched with each other and used for accommodating the formed section after injection molding; the supporting rod (31) penetrates through the movable template (33) and is connected with the movable template (33) in a sliding mode, a driving cylinder (35) used for driving the movable template (33) to ascend and descend is further arranged below the rotary table (2), a piston rod of the driving cylinder (35) penetrates through the rotary table (2) and is fixedly connected with the movable template, an injection molding hole (34) is formed in the upper surface of the fixed template (32) in the direction of the cavity, and an injection molding pipe (41) used for being inserted into the injection molding hole (34) is communicated with the corresponding injection molding mechanism (4).

2. The multistation injection molding machine for polymer rubber and plastic according to claim 1, characterized in that: the cavity of the movable template (33) is internally provided with a demoulding hole (36) towards the direction of the turntable (2), the demoulding hole (36) is internally provided with a plurality of demoulding rods (37) in a penetrating way, when the movable template (33) is jacked up to the fixed template (32) by a driving cylinder (35) to be mutually abutted, the highest point of the demoulding rod (37) is flush with the bottom wall of the cavity, and when the movable template (33) is driven by the driving cylinder (35) to move to be located at the lowest stroke, the highest point of the demoulding rod (37) is higher than that of the movable template (33).

3. The multistation injection molding machine for polymer rubber and plastic according to claim 2, characterized in that: the edge of the upper portion of the rotary disc (2) close to the rotary disc (2) is provided with a demoulding fan (6) used for blowing off an injection moulding finished product jacked up by the demoulding rod (37), and an air outlet of the demoulding fan (6) is arranged towards the edge of the rotary disc (2).

4. The multistation injection molding machine for polymer rubber and plastic according to claim 3, characterized in that: and a collecting box (62) for receiving the demoulded product is further fixedly connected to the outer side of the turntable (2) in the blowing direction of the demoulding fan (6).

5. The multistation injection molding machine for polymer rubber and plastic according to claim 3, characterized in that: the fixed connection has mount (61) that is used for fixed drawing of patterns fan (6) on frame (1), mount (61) include two stands (611) of rigid coupling on frame (1) surface, the one end that the frame was kept away from in every stand (611) articulates there is a articulated arm (612), articulated arm (612) set up and articulated arm (612) on two stands (611) slope each other towards the centre of a circle of carousel (2) and set up, articulated arm (612) articulate towards the one end of carousel (2) centre of a circle has a connecting screw rod (613), the rigid coupling has a fixed plate (614) on drawing of patterns fan (6), rectangular channel (615) have been seted up on fixed plate (614), connecting screw rod (613) pass rectangular channel (615), and connecting screw rod (613) go up still screw-thread fit has two set nut (616), two set nut (616) are located the both sides of fixed plate (614).

6. The multistation injection molding machine for polymer rubber and plastic according to claim 1, characterized in that: the rack (1) is also provided with a cooling assembly (5); mechanism (4) moulds plastics, cooling module (5), the rotation direction of carousel (2) is laid in proper order along drawing of patterns fan (6), cooling module (5) are including setting up cooling box (51) at carousel (2) border department, cooling box (51) are the arc form and extend and with carousel (2) coaxial setting, cooling box (51) are located carousel (2) top and cooling box (51) arc direction's both ends are the opening setting, rotate along with carousel (2) when mould subassembly (3), mould subassembly (3) are changeed over into or are rolled over out cooling box (51) through the opening at cooling box (51) both ends, still be provided with radiator fan (52) in cooling box (51).

7. The multistation injection molding machine for polymer rubber and plastic according to claim 1, characterized in that: the rotary table (2) is also provided with a preheating assembly (7) for preheating a template before injection molding, and the preheating assembly (7) is positioned on one side of the injection molding mechanism (4) departing from the rotating direction of the rotary table (2);

the preheating assembly (7) comprises a preheating box (71) arranged at the edge of the turntable (2), the preheating box (71) extends in an arc shape and is coaxial with the turntable (2), openings for accommodating the mold assembly (3) to rotate in or out are respectively formed at two ends of the preheating box (71) in the arc direction, and an electric heating wire (73) is arranged in the preheating box (71).

8. The multistation injection molding machine for polymer rubber and plastic according to claim 7, characterized in that: and heat-insulating door curtains (74) are respectively arranged at openings at two ends of the preheating box (71).