CN211251084U

CN211251084U - Drying and plasticizing integrated injection molding machine

Info

Publication number: CN211251084U
Application number: CN201922219441.1U
Authority: CN
Inventors: 何艺霖; 王昀韬
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-14
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a integrative injection molding machine of dry plastify belongs to injection molding machine technical field, including hopper (1), the discharge gate of hopper (1) is linked together with the feed inlet of drying tube (6), the discharge gate of drying tube (6) is linked together with the feed inlet of feed cylinder (7), the discharge gate of feed cylinder (7) is provided with nozzle (8), be provided with center pin (14) in drying tube (6), center pin (14) link to each other with the motor, center pin (14) vertical axis is provided with a plurality of circular festival pieces (12), be equipped with blanking hole (13) on circular festival piece (12), it is adjacent on circular festival piece (12) blanking hole (13) staggered arrangement, the feed inlet of feed cylinder (7) still links to each other with injection hydraulic cylinder (4). The utility model provides a collect drying and plastify in full-automatic injection molding machine of an organic whole, reduce the phenomenon that the bubble appears in the product, improve the production efficiency of producer when improving work piece quality.

Description

Drying and plasticizing integrated injection molding machine

Technical Field

The utility model belongs to the technical field of the injection molding machine, concretely relates to integrative injection molding machine of dry plastify.

Background

An injection molding machine is a short term for a plastic molding machine, and is a main molding device for making thermoplastic plastics or thermosetting plastics into plastic products with various shapes by using a plastic molding die. Injection molding is accomplished by an injection molding machine and a mold.

The injection molding machine is a main molding device which utilizes a plastic molding die to manufacture thermoplastic plastics or thermosetting plastics into plastic products with various shapes. Common injection molding machines in the market do not have a drying function, solid plastics are directly plasticized at high temperature without being dried, and residual water vapor easily causes the phenomenon that bubbles appear in workpiece products. The patent with publication number CN203027516U discloses an equipment for drying materials by using a high-efficiency heater, which comprises a radiating block and a heater inserted in the radiating block, and is characterized in that: the heat dissipation device comprises a plurality of heat dissipation blocks, a screw rod, a screw cap and a heat dissipation device, wherein the heat dissipation blocks are arranged at two ends of each heat dissipation block, the supports are arranged at the two ends of each heat dissipation block to fix the heat dissipation blocks mutually, the screw rod penetrates through the two supports to be connected with a heater fixing flange, and the screw rod is respectively fixed with the supports at the two ends of each heat dissipation block; a spring is sleeved on a screw rod between the support at one end and the screw cap, and a protective sleeve is arranged outside the screw rod. But its structure is complicated, and the clearance is inconvenient and can not realize automaticly, and the raw materials after drying the material processing still need the manual work to carry and add, has prolonged production cycle, and efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a collect dry and plastify in full-automatic injection molding machine of an organic whole is provided, and is dry abundant, reduces the phenomenon that the bubble appears in the work piece product, improves the production efficiency of producer when improving work piece quality.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides a integrative injection molding machine of drying plastify, includes the hopper, the discharge gate of hopper is linked together with the feed inlet of drying tube, the discharge gate of drying tube is linked together with the feed inlet of feed cylinder, the discharge gate of feed cylinder is provided with the nozzle, be provided with the center pin in the drying tube, the center pin links to each other with the motor, the perpendicular axial of center pin is provided with a plurality of circular festival pieces, be equipped with the blanking hole on the circular festival piece, adjacent on the circular festival piece blanking hole staggered arrangement, the feed inlet of feed cylinder still links to each other with injection hydraulic cylinder.

The drying tube is connected with the charging barrel, a mechanical turntable is arranged at the center of the drying tube, the lower end of the central shaft is arranged on a bearing of the mechanical turntable, and the central shaft is connected with a motor through a motor coupler.

And an exhaust pipe is arranged at the upper end of the side wall of the drying pipe.

The drying tube comprises a drying tube wall, a first resistance heating plate and a first baffle in sequence from outside to inside, and the first resistance heating plate is connected with the temperature control platform through a first connecting circuit.

The charging barrel is sequentially provided with a charging barrel wall, a second resistance heating plate and a second blocking piece from outside to inside, and the second resistance heating plate is connected with the temperature control platform through a second connecting circuit.

The hopper comprises an upper structure and a lower structure which are integrally connected, wherein the upper structure is in a hollow cylindrical shape, and the lower structure is in a hollow circular truncated cone shape with the inner diameter gradually reduced from top to bottom.

And the outer part of the charging barrel is wrapped with a heat-insulating layer.

The drying tube is communicated with the charging barrel through holes, the holes are 2 groups, and the vertical surfaces of the holes include the blanking holes.

The utility model provides a pair of integrative injection molding machine of dry plastify reduces the phenomenon that the bubble appears in the work piece product, improves the production efficiency of producer when improving the work piece quality. The drying pipes are arranged to realize the integration of drying and plasticizing of the solid plastics, and the blanking holes on the adjacent circular segments are arranged in a staggered manner, so that the solid plastics fall step by step and the drying is more sufficient; the motor controls the rotation speed of the central shaft to avoid the accumulation of solid plastics in the drying tube; the arrangement of the exhaust pipe is convenient for exhausting hot gas in time, the occurrence of liquefaction caused by uneven heating of the drying pipe is reduced, and the drying efficiency of the drying pipe is improved; the resistance heating plate heats the solid plastic falling into the drying tube at high temperature; the first baffle plate effectively prevents the plastic from directly contacting the resistance heating plate, so that the plastic is prevented from being adhered to the first resistance heating plate, and the service life of equipment is prevented from being influenced; the temperature control table reasonably controls and selects the material drying temperature according to the difference of the solid plastics; the second resistance heating plate is arranged to realize high-temperature plasticization, so that the solid plastic is changed into liquid with good plasticity viscous flow state; the injection hydraulic cylinder provides power to push the plastic in a molten state to advance and inject the plastic into a mold cavity from a nozzle to form a product; the vertical surface of the hole is used for including the blanking hole, so that the blanking accumulation at the bottom is prevented.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic half-sectional view of a drying duct according to the present invention;

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, a drying and plasticizing integrated injection molding machine comprises a hopper 1, a discharge port of the hopper 1 is communicated with a feed port of a drying tube 6, a discharge port of the drying tube 6 is communicated with a feed port of a charging barrel 7, the discharge port of the charging barrel 7 is provided with a nozzle 8, a central shaft 14 is arranged in the drying tube 6, the central shaft 14 is connected with a motor, a plurality of circular segments 12 are axially arranged in a vertical direction of the central shaft 14, blanking holes 13 are formed in the circular segments 12, the blanking holes 13 are arranged on the circular segments 12 in a staggered manner, the feed port of the charging barrel 7 is further connected with an injection hydraulic cylinder 4, and the injection hydraulic cylinder 4 is connected with a power supply. The drying tube 6 is the core invention point, and the drying and plasticizing of the solid plastic are integrated by the arrangement of the drying tube 6. The blanking holes 13 on the adjacent circular segments 12 are arranged in a staggered mode, so that the solid plastics fall down step by step, and the drying is more sufficient.

The central position of the drying tube 6 and the charging barrel 7 which are communicated is provided with a mechanical turntable 20, the lower end of the central shaft 14 is arranged on a bearing of the mechanical turntable 20, and the central shaft 14 is connected with a motor through a motor coupler. The motor controls the rotation speed of the central shaft 14, so that solid plastics are prevented from being accumulated in the drying tube, and the solid plastics are ensured to fall orderly.

And an exhaust pipe 2 is arranged at the upper end of the side wall of the drying pipe 6. The setting of blast pipe 2 is convenient for in time discharge steam, reduces the emergence of the liquefaction condition that drying tube 6 leads to owing to being heated unevenly, improves 6 drying efficiency of drying tube.

The drying tube 6 sequentially comprises a drying tube wall 9, a first resistance heating plate 10 and a first baffle 11 from outside to inside, and the first resistance heating plate 10 is connected with the temperature control table 3 through a first connecting circuit 18. The first resistance heating plate 10 is used for heating the solid plastic falling into the drying tube at a high temperature; and the temperature control table 3 reasonably controls and selects the material drying temperature according to different solid plastics. The first blocking piece 10 effectively blocks plastics from being in direct contact with the first resistance heating plate 10, and therefore adhesion of the plastics to the first resistance heating plate 10 is avoided, and service life of equipment is affected.

The charging barrel 7 is sequentially provided with a charging barrel wall 15, a second resistance heating plate 16 and a second baffle 17 from outside to inside, and the second resistance heating plate 16 is connected with the temperature control table 3 through a second connecting circuit 19. The second resistance heating plate 16 is arranged to realize high-temperature plasticization, so that solid plastics are changed into liquid with good plasticity viscous flow state; the injection hydraulic cylinder 4 provides power to push the plastic in a molten state to advance and inject the plastic into a mold cavity from a nozzle to form a product.

The injection hydraulic cylinder and the temperature control platform are both fixed on the machine base.

The hopper 1 comprises an upper structure and a lower structure which are integrally connected, the upper structure is in a hollow cylindrical shape, and the lower structure is in a hollow round table shape with the inner diameter gradually reduced from top to bottom, so that solid materials can fall conveniently.

The outside parcel of feed cylinder 7 has the heat preservation, reduces feed cylinder 7 and external environment heat exchange.

Drying tube 6 is linked together through hole 21 with feed cylinder 7, hole 21 is 2 groups, the perpendicular of hole 21 will blanking hole 13 includes, promptly blanking hole 13 all falls in the projection of feed cylinder upper wall in hole 21, avoid the bottom blanking to pile up.

When the device is used, the motor and the temperature control table 3 are connected with the power supply 16, and the drying tube 6 and the charging barrel 7 are preheated through the temperature control table 3, so that solid plastics can be plasticized more completely, and the product quality is improved. The temperature in the drying tube 6 is adjusted properly by the temperature control table 3 according to the difference of solid materials. Solid plastics are poured into the hopper 1, fall into the drying tube 6, the central shaft 14 rotates, the solid plastics sequentially fall from the blanking hole 13, the solid plastics pass through the hole 21, enter the charging barrel 7, are heated and plasticized, and are powered by the injection hydraulic cylinder 4 to push the plastics in a molten state to advance, and are injected into a mold cavity from the nozzle 8 to form a product.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a integrative injection molding machine of drying plastify which characterized in that: including hopper (1), the discharge gate of hopper (1) is linked together with the feed inlet of drying tube (6), the discharge gate of drying tube (6) is linked together with the feed inlet of feed cylinder (7), the discharge gate of feed cylinder (7) is provided with nozzle (8), be provided with center pin (14) in drying tube (6), center pin (14) link to each other with the motor, center pin (14) vertical axis is provided with a plurality of circular festival pieces (12), be equipped with blanking hole (13) on circular festival piece (12), it is adjacent on circular festival piece (12) blanking hole (13) staggered arrangement, the feed inlet of feed cylinder (7) still links to each other with injection hydraulic cylinder (4).

2. The dry plastic injection molding machine of claim 1, wherein: the drying tube (6) and the charging barrel (7) are communicated, a mechanical turntable (20) is arranged at the center, the lower end of the central shaft (14) is arranged on a bearing of the mechanical turntable (20), and the central shaft (14) is connected with a motor through a motor coupler.

3. The dry plastic injection molding machine of claim 1, wherein: and an exhaust pipe (2) is arranged at the upper end of the side wall of the drying pipe (6).

4. The dry plastic injection molding machine of claim 1, wherein: drying tube (6) outside-in includes drying tube wall (9), resistance heating board (10) and separation blade (11) in proper order, resistance heating board (10) link to each other with temperature control platform (3) through interconnecting link (18).

5. A dry plasticating injection molding machine as defined in claim 1 or claim 4 wherein: the charging barrel (7) is sequentially provided with a charging barrel wall (15), a second resistance heating plate (16) and a second baffle sheet (17) from outside to inside, and the second resistance heating plate (16) is connected with the temperature control platform (3) through a second connecting circuit (19).

6. The dry plastic injection molding machine as claimed in claim 5, wherein: the injection hydraulic cylinder (4) and the temperature control platform (3) are both fixed on the machine base (5).

7. The dry plastic injection molding machine of claim 1, wherein: the hopper (1) comprises an upper structure and a lower structure which are integrally connected, wherein the upper structure is in a hollow cylindrical shape, and the lower structure is in a hollow circular truncated cone shape with the inner diameter gradually reduced from top to bottom.

8. The dry plastic injection molding machine of claim 1, wherein: and the outer part of the charging barrel (7) is wrapped with a heat-insulating layer.

9. The dry plastic injection molding machine of claim 1, wherein: the drying tube (6) is communicated with the charging barrel (7) through holes (21), the holes (21) are 2 groups, and the vertical surfaces of the holes (21) include the blanking holes (13).