CN112848092A

CN112848092A - Nozzle structure installed on injection mold

Info

Publication number: CN112848092A
Application number: CN202110185861.1A
Authority: CN
Inventors: 徐嘉辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2021-05-28
Also published as: CN109531911A; CN109531911B; CN112848093A

Abstract

The invention belongs to the technical field of injection molds, and particularly relates to a nozzle structure mounted on an injection mold, which comprises an injection mechanism, a feeding hopper, a driving unit, a first support, a bottom plate and a second support, wherein the injection mechanism stops feeding after plastic injected in a mold cavity corresponding to one of two discharge ports is filled, but a screw rod can continuously push the plastic to move towards the discharge ports, the amount of the plastic between one end of a rotating shell, which is provided with an injection port, and a sliding disc is continuously increased, the pressure of the plastic is continuously increased, the plastic at the section can extrude the sliding disc to slide, and the rotating shell is driven to rotate by 180 degrees through the sliding of the sliding disc, so that the injection port on the rotating shell is communicated with the other of the two discharge ports formed on the mounting shell; injecting into the mould cavity corresponding to the discharge hole; the continuity of injection is ensured.

Description

Nozzle structure installed on injection mold

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to a nozzle structure mounted on an injection mold.

Background

An injection mold is a tool for producing plastic products; also a tool for endowing the plastic product with complete structure and accurate dimension; injection molding is a processing method used for mass production of parts with complex shapes; injecting the heated and melted plastic into a mold cavity at high pressure by an injection molding machine, and cooling and solidifying to obtain a formed product; after one injection in the use is accomplished, need wait for to make the plastics that inject into the die cavity cool off the solidification, later take away the shaping article after removing the solidification with the die cavity, in this process, need wait for certain time and can inject once more through plastics cooling solidification to taking away between the finished product, reduced injection efficiency, improved the cost.

The invention designs a nozzle structure arranged on an injection mold to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a nozzle structure mounted on an injection mold, which is realized by adopting the following technical scheme.

The utility model provides a nozzle structure of installation on injection mold which characterized in that: the injection molding device comprises an injection molding mechanism, a feeding funnel, a driving unit, a first support, a bottom plate and a second support, wherein the feeding funnel is mounted on the injection molding mechanism and used for adding plastics into an injection cylinder; the injection molding mechanism is arranged on the bottom plate through two second supports which are symmetrically distributed; the driving unit is arranged on the bottom plate through a first support; the driving unit provides power for the plastic liquid in the injection molding mechanism to flow; the driving unit is internally provided with a speed reducer and a driving motor, and the driving unit can drive the screw rod to rotate; the screw rod rotates to drive the driving screw thread to rotate, and the driving screw thread rotates to drive the plastic in the injection material cylinder to move towards the discharge hole.

The injection molding mechanism comprises a rotating shell, a sliding disc, a trigger shell, an installation shell, a heater, a screw rod, an injection cylinder, a driving thread, a reset spring, a driving ring, a trigger driving spring, a trigger block, a one-way clutch and a rotating spring, wherein one end of the installation shell is circumferentially and uniformly provided with two discharge ports which are communicated with each other inside and outside on the end surface of the installation shell, and the two discharge ports are respectively provided with a discharge nozzle which is used for being conveniently connected with a mold cavity; the mounting shell is mounted on the bottom plate through a second support; the guide rail ring is installed on the inner circular surface of the installation shell, one end of the rotating shell is provided with an injection port communicated with the inside and the outside on the end surface of the rotating shell, the guide support ring is installed on the outer circular surface of the rotating shell, the rotating shell is installed in the installation shell through the matching of the guide support ring and the guide rail ring, and the rotating shell can be guaranteed to rotate freely in the installation shell through the matching of the guide support ring and the guide rail ring. The injection port on the rotating shell is correspondingly matched with the two discharge ports on the mounting shell; a plurality of heaters are uniformly arranged on the outer circular surface of the rotating shell; the heater is used for heating the inner side of the rotating shell, so that the plastic positioned on the inner side of the injection cylinder is converted into liquid from solid at high temperature, and is convenient to inject into the mold cavity.

One end of the material injection cylinder is an opening end, and the other end of the material injection cylinder is fixedly arranged at one end of the mounting shell, which is provided with a discharge hole; the screw rod is provided with a driving thread, the screw rod is nested and installed on the inner side of the injection material barrel, and one end of the screw rod penetrates through a screw rod hole formed in the injection material barrel and the installation shell and is connected with the driving unit.

The sliding disc is arranged at one end of the charging barrel, which is far away from the driving unit, through sliding fit; the one end of the sliding disc close to the trigger shell is provided with a mounting ring, the outer circular surface of the mounting ring is uniformly provided with a plurality of helical teeth in the circumferential direction, the inner ring of the one-way clutch is arranged on the charging barrel in a rotating fit manner, and a return spring is arranged between the outer ring of the one-way clutch and the sliding disc; one end of the outer ring of the one-way clutch, which is close to the sliding disc, is provided with a connecting ring, a plurality of trigger driving blocks are uniformly arranged on the connecting ring in the circumferential direction, and the trigger driving blocks arranged on the connecting ring are correspondingly matched with the helical teeth arranged on the mounting ring one by one; the trigger shell is arranged on the charging barrel in a rotating fit manner, and a rotating spring is arranged between the trigger shell and the inner ring of the one-way clutch; the sliding disc moves towards one side of the trigger shell along the axial direction of the material injection cylinder to drive the outer ring of the one-way clutch to rotate; when the sliding disc moves towards one side of the trigger shell, the sliding disc can extrude the trigger driving block arranged on the outer ring of the one-way clutch through the helical teeth arranged on the sliding disc, and the sliding disc can only slide on the charging barrel and can not rotate, while the outer ring of the one-way clutch can only rotate and can not slide, so that the trigger driving block can drive the outer ring of the one-way clutch to rotate under the extrusion of the corresponding helical teeth; the effect of one-way clutch is that when slip disc drive one-way clutch rotated, one-way clutch can drive the trigger shell through the rotation spring and rotate, but rotation spring can not the back drive one-way clutch drive slip disc rotation.

A driving shifting block is arranged on the inner circular surface of one end of the trigger shell close to the driving unit; the driving ring is arranged on the charging barrel, and a plurality of trigger blocks which freely contract in the driving ring are uniformly arranged on the circumferential direction of the outer circular surface of the driving ring; the trigger block is matched with the driving shifting block.

The trigger shell is connected with the rotating shell through a first gear and a second gear.

A heater is arranged on the outer circular surface of one end of the material injection cylinder, which is close to the driving unit; the heater is used for heating the inner side of the material injection cylinder, so that the plastic on the inner side of the material injection cylinder is converted into liquid from solid at high temperature, and is convenient to inject into the mold cavity.

Through the speed change of the first gear and the second gear, the sliding disk moves once towards the trigger shell, and the rotating shell rotates 180 degrees.

A connecting circular hole is formed in the outer circular surface of one end, close to the driving unit, of the charging barrel; the outer circle face of the mounting shell close to one end of the driving unit is provided with a feeding hole, the feeding funnel is mounted on the mounting shell through the feeding hole, the lower end of the feeding funnel penetrates through a connecting round hole in the material injection cylinder to be connected with the inner side of the material injection cylinder, and the feeding funnel is communicated with the material injection cylinder.

As a further improvement of the technology, a first toothed ring is arranged on the inner circular surface of one end of the rotating shell close to the driving unit; one end of the trigger shell, which is close to the driving unit, is provided with a circular groove, and the inner circular surface of the circular groove is provided with a second toothed ring; the fixed plate is arranged on the charging barrel, one end of the gear shaft is arranged on the fixed plate, the second gear is arranged at one end of the gear shaft and is meshed with the second gear ring arranged on the trigger shell, the first gear is arranged at the other end of the gear shaft and is meshed with the first gear ring arranged on the rotating shell; when the trigger shell rotates, the trigger shell drives the second gear to rotate through the second gear ring arranged on the trigger shell, and the second gear ring rotates to drive the first gear to rotate through the gear shaft; the first gear rotates and drives the rotating shell to rotate through the first gear ring installed on the rotating shell.

As a further improvement of the technology, a limiting ring for limiting the sliding disk is arranged in the rotating shell; the effect of spacing ring is to prevent that the slip disc from slipping off the notes feed cylinder under reset spring's effect, influences the slip disc and uses next time.

As a further improvement of the technology, two guide blocks are uniformly arranged on the outer circular surface of the injection cylinder at one end far away from the driving unit in the circumferential direction; two guide grooves are uniformly formed in the inner circumferential surface of the sliding disc in the circumferential direction, the sliding disc is installed on the material injection cylinder through the matching of the two guide grooves and the two guide blocks, and the sliding disc can slide along the material injection cylinder through the matching of the guide blocks and the guide grooves but cannot rotate.

As a further improvement of the technology, a guide ring is arranged on the outer circular surface of one end of the injection cylinder, which is far away from the driving unit; the inner circle surface of the trigger shell is provided with an annular guide groove, the trigger shell is arranged on the material injection cylinder through the matching of the annular guide groove and the guide ring, and the trigger shell can rotate along the axis of the material injection cylinder but cannot slide through the matching of the guide ring and the annular guide groove.

As a further improvement of the technology, one end of the return spring is mounted on the sliding disk, and the other end of the return spring is mounted on the outer ring of the one-way clutch in a welding manner; the reset spring has the function of resetting the sliding disc, and simultaneously, the outer ring of the one-way clutch drives the connecting ring to return to the original position in the rotating direction.

As a further improvement of the present technology, the return spring is a compression spring.

As a further improvement of the technology, a plurality of mounting grooves are uniformly arranged on the outer circumferential surface of the driving ring in the circumferential direction, a plurality of trigger blocks are respectively mounted on the driving ring through matching with the mounting grooves arranged on the driving ring, and a trigger driving spring is mounted in each trigger block and the corresponding mounting groove; when the sliding disc drives the outer ring of the one-way clutch to rotate, the one-way clutch drives the rotating spring to rotate, the rotating spring can provide a rotating force for the trigger shell, the trigger shell can drive the driving shifting block arranged on the trigger shell to rotate around the axis of the trigger shell under the rotating force, after the driving shifting block is contacted with the corresponding trigger block on the driving ring, the trigger block can move towards the inner side of the corresponding mounting groove formed on the driving ring under the stirring action of the driving shifting block, the trigger block can provide a reaction force for the driving shifting block to enable the trigger shell to be relatively static, the force of the spring is rotated, when the extreme point of one side of the driving shifting block close to the trigger block moves to the extreme point of the trigger block, the sliding disc stops driving the trigger shell, the limit of the driving shifting block is lost, and under the state, the trigger shell can drive the driving shifting block to rotate rapidly under the action of the rotating spring, so that the drive block moves into contact with a trigger block located on the rear side thereof.

As a further improvement of the present technique, the trigger driving spring is a compression spring.

As a further improvement of the present technique, the drive ring is mounted on the barrel by welding.

Compared with the traditional injection mold technology, the injection mold designed by the invention has the advantages that through designing the two discharge holes, through the continuous alternate discharging of the two discharging ports, the time for waiting from the cooling and solidification of the plastic to the taking-off of the finished product is reduced, the use efficiency is improved, and the cost is reduced. The mould stops feeding, but the screw rod can still push the plastic to move towards the discharge hole, at the moment, the amount of the plastic between the end of the rotating shell, which is provided with the injection port, and the sliding disc is increased continuously, the pressure of the plastic is increased continuously, the plastic of the section can extrude the sliding disk to slide, the sliding disk slides to drive the rotating shell to rotate 180 degrees, the injection port on the rotating shell is communicated with the other of the two discharge ports on the mounting shell; injecting into the mould cavity corresponding to the discharge hole; the continuity of injection is ensured.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic plan view of the internal structural distribution of the integral component.

Fig. 4 is a schematic view of the internal structure installation of the integral component.

Fig. 5 is a first support mounting schematic.

Fig. 6 is a schematic view of the structure of the mounting case.

Fig. 7 is a schematic view of the addition funnel configuration.

Fig. 8 is a schematic view of a rotating case structure.

Fig. 9 is a first gear mounting schematic.

Fig. 10 is a schematic view of the trigger housing installation.

FIG. 11 is a schematic view of the trigger driving block cooperating with the helical teeth.

FIG. 12 is a schematic diagram of a distribution of trigger drive blocks.

Figure 13 is a schematic view of a helical tooth installation.

Fig. 14 is a schematic diagram of the distribution of the driving shifting block and the trigger block.

Fig. 15 is a schematic diagram of the matching of the driving shifting block and the trigger block.

Fig. 16 is a drive block mounting schematic.

Fig. 17 is a schematic view of a structure of a charging barrel.

Fig. 18 is a schematic view of a screw structure.

Fig. 19 is a schematic view of trigger block installation.

Number designation in the figures: 1. an injection molding mechanism; 2. a charging hopper; 3. a drive unit; 4. a first support; 5. a base plate; 6. a heater; 7. rotating the shell; 8. a one-way clutch; 9. a sliding disk; 10. a trigger housing; 11. a discharging nozzle; 12. a screw; 13. a first gear; 14. mounting a shell; 15. a fixing plate; 16. a charging barrel is injected; 17. a second support; 18. a discharge port; 19. a guide rail ring; 20. a feed inlet; 21. a screw hole; 22. a guide support ring; 23. a first ring gear; 24. an injection port; 25. a limiting ring; 26. a gear shaft; 27. a second gear; 28. a drive ring; 29. a return spring; 30. triggering a drive spring; 31. a trigger block; 32. a second ring gear; 33. triggering the driving block; 35. an annular guide groove; 36. installing a circular groove; 37. a mounting ring; 38. a connecting ring; 40. a circular groove; 42. helical teeth; 43. a guide groove; 44. a guide block; 45. a guide ring; 46. the connecting circular hole; 47. a drive screw; 48. driving the shifting block; 49. mounting grooves; 51. the spring is rotated.

Detailed Description

As shown in fig. 1 and 2, the injection molding machine comprises an injection molding mechanism 1, a charging hopper 2, a driving unit 3, a first support 4, a bottom plate 5 and a second support 17, wherein as shown in fig. 3 and 7, the charging hopper 2 is mounted on the injection molding mechanism 1, and the charging hopper 2 is used for adding plastic into an injection cylinder 16; as shown in fig. 4 and 5, the injection mechanism 1 is mounted on the bottom plate 5 through two second supports 17 which are symmetrically distributed; as shown in fig. 3, the driving unit 3 is mounted on the base plate 5 through the first support 4; the driving unit 3 provides power for the plastic liquid in the injection molding mechanism 1 to flow; the driving unit 3 is internally provided with a speed reducer and a driving motor, and the screw 12 can be driven to rotate through the driving unit 3; the screw 12 rotates to drive the screw 47 to rotate, and the plastic in the injection cylinder 16 is driven to move towards the discharge hole 18 by the rotation of the screw 47.

As shown in fig. 3 and 10, the injection molding mechanism 1 includes a rotating shell 7, a sliding disc 9, a trigger shell 10, an installation shell 14, a heater 6, a screw 12, an injection barrel 16, a driving thread 47, a return spring 29, a driving ring 28, a trigger driving spring 30, a trigger block 31, a one-way clutch 8, and a rotating spring 51, wherein as shown in fig. 6, one end of the installation shell 14 is circumferentially and uniformly provided with two discharge ports 18 which are communicated with each other inside and outside on the end surface thereof, two discharge ports 18 are respectively provided with a discharge nozzle 11, and the discharge nozzles 11 are used for being conveniently connected with a mold cavity; as shown in fig. 1, the mounting case 14 is mounted on the base plate 5 via a second support 17; the inner circular surface of the mounting shell 14 is provided with a guide rail ring 19, as shown in fig. 8, one end of the rotating shell 7 is provided with an injection port 24 communicating with the inside and the outside on the end surface thereof, as shown in fig. 4, the outer circular surface of the rotating shell 7 is provided with a guide support ring 22, the rotating shell 7 is mounted in the mounting shell 14 through the matching of the guide support ring 22 and the guide rail ring 19, and the rotating shell 7 can be ensured to rotate freely in the mounting shell 14 through the matching of the guide support ring and the guide rail ring 19. And the injection port 24 on the rotating shell 7 is correspondingly matched with the two discharge ports 18 opened on the mounting shell 14; a plurality of heaters 6 are uniformly installed on the outer circumferential surface of the rotating shell 7; the heater 6 serves to warm the inside of the rotating shell 7 so that the plastic inside the injection cylinder 16 is transformed from a solid state to a liquid state at high temperature for injection into the mold cavity.

As shown in fig. 17, one end of the syringe barrel 16 is an open end, and as shown in fig. 4, the syringe barrel 16 is fixedly mounted at the end of the mounting case 14 opened with the discharge port 18 through the other end thereof; as shown in fig. 18, the screw 12 has a driving screw 47, and as shown in fig. 4, the screw 12 is nested inside the injection cylinder 16, and one end of the screw 12 passes through a screw hole 21 formed in the injection cylinder 16 and the mounting case 14 to be connected to the driving unit 3.

As shown in fig. 10, the slide disk 9 is mounted on the end of the syringe barrel 16 remote from the drive unit 3 by a slide fit; as shown in fig. 13, a mounting ring 37 is mounted at one end of the sliding disk 9 close to the trigger shell 10, a plurality of helical teeth 42 are uniformly mounted on the outer circumferential surface of the mounting ring 37 in the circumferential direction, as shown in fig. 10, the inner ring of the one-way clutch 8 is mounted on the charging barrel 16 by rotating fit, and a return spring 29 is mounted between the outer ring of the one-way clutch 8 and the sliding disk 9; as shown in fig. 12, a connecting ring 38 is mounted at one end of the outer ring of the one-way clutch 8 close to the sliding disk 9, a plurality of trigger driving blocks 33 are uniformly mounted on the connecting ring 38 in the circumferential direction, and as shown in fig. 11, the trigger driving blocks 33 mounted on the connecting ring 38 are correspondingly matched with the helical teeth 42 mounted on the mounting ring 37 one by one; as shown in fig. 10, the trigger case 10 is mounted on the charging barrel 16 by a rotation fit, and a rotation spring 51 is mounted between the trigger case 10 and the inner ring of the one-way clutch 8; the sliding disk 9 moves towards the side of the trigger shell 10 along the axial direction of the charging barrel 16 to drive the outer ring of the one-way clutch 8 to rotate; when the sliding disk 9 moves towards one side of the trigger shell 10, the sliding disk 9 can extrude the trigger driving block 33 arranged on the outer ring of the one-way clutch 8 through the helical teeth 42 arranged on the sliding disk 9, and the sliding disk 9 can only slide on the material injection barrel 16 and can not rotate, while the outer ring of the one-way clutch 8 can only rotate and can not slide, so that the trigger driving block 33 can drive the outer ring of the one-way clutch 8 to rotate under the extrusion of the corresponding helical teeth 42; the function of the one-way clutch 8 is that when the sliding disk 9 drives the one-way clutch 8 to rotate, the one-way clutch 8 can drive the trigger shell 10 to rotate through the rotating spring 51, but the rotating spring 51 can not drive the one-way clutch 8 reversely to drive the sliding disk 9 to rotate.

As shown in fig. 10 and 16, a driving shifting block 48 is mounted on the inner circumferential surface of the trigger shell 10 near one end of the driving unit 3; as shown in fig. 15, the drive ring 28 is mounted on the injection barrel 16, and as shown in fig. 19, a plurality of trigger blocks 31 which are freely contracted in the drive ring 28 are uniformly mounted on the outer circumferential surface of the drive ring 28 in the circumferential direction; as shown in fig. 14, the trigger block 31 is engaged with the drive paddle 48.

As shown in fig. 4, the trigger housing 10 is connected to the rotating housing 7 through the first gear 13 and the second gear 27.

A heater 6 is arranged on the outer circular surface of one end of the charging barrel 16 close to the driving unit 3; the heater 6 is used to warm the inside of the injection cylinder 16, so that the plastic inside the injection cylinder 16 is transformed from solid state to liquid state at high temperature for being injected into the mold cavity.

The sliding disk is moved once toward the trigger housing 10 by the gear change of the first gear 13 and the second gear 27, and the rotation housing 7 is rotated by 180 degrees.

As shown in fig. 6, a connecting circular hole 46 is formed on the outer circumferential surface of the charging barrel 16 near one end of the driving unit 3; the outer circumferential surface of the mounting case 14 near the end of the driving unit 3 is provided with a feed opening 20, as shown in fig. 4 and 7, the feeding funnel 2 is mounted on the mounting case 14 through the feed opening 20, the lower end of the feeding funnel 2 passes through a connecting circular hole 46 on the injection cylinder 16 to be connected with the inner side of the injection cylinder 16, and the feeding funnel 2 is communicated with the injection cylinder 16.

In summary, the following steps:

the beneficial effects of the design of the invention are as follows: the injection mold has the advantages that through the design of the two discharge ports 18 and the continuous and alternate discharge of the two discharge ports 18, the waiting time from the cooling and solidification of the plastic to the taking-away of the finished product is reduced, the use efficiency is improved, and the cost is reduced, the mould stops feeding, but the screw 12 continues to push the plastic towards the outlet 18, at which point the quantity of plastic between the end of the rotating shell 7, in which the injection port 24 is made, and the sliding disc 9 increases, the pressure of the plastic increases, the plastic of the section extrudes the sliding disk 9 to slide, the rotating shell 7 is driven to rotate for 180 degrees by the sliding of the sliding disk 9, the injection port 24 on the rotating shell 7 is communicated with the other of the two discharge ports 18 opened on the mounting shell 14; injecting in the corresponding mould cavity of the discharge port 18; the continuity of injection is ensured.

As shown in fig. 8, a first toothed ring 23 is mounted on the inner circumferential surface of the rotating housing 7 near one end of the driving unit 3; as shown in fig. 16, one end of the trigger case 10 adjacent to the driving unit 3 has a circular groove 40, and the second ring gear 32 is mounted on the inner circumferential surface of the circular groove 40; as shown in fig. 4, the fixed plate 15 is mounted on the injection cylinder 16, one end of the gear shaft 26 is mounted on the fixed plate 15, as shown in fig. 9, the second gear 27 is mounted on one end of the gear shaft 26 and the second gear 27 is engaged with the second ring gear 32 mounted on the trigger case 10, the first gear 13 is mounted on the other end of the gear shaft 26 and the first gear 13 is engaged with the first ring gear 23 mounted on the rotation case 7; when the trigger shell 10 rotates, the trigger shell 10 drives the second gear 27 to rotate through the second gear ring 32 mounted thereon, and the second gear 27 rotates to drive the first gear 13 to rotate through the gear shaft 26; the first gear 13 rotates to rotate the rotation housing 7 through the first ring gear 23 mounted on the rotation housing 7.

A limiting ring 25 for limiting the sliding disc 9 is arranged in the rotating shell 7; the limiting ring 25 is used for preventing the sliding disc 9 from sliding off the injection cylinder 16 under the action of the return spring 29 and influencing the next use of the sliding disc 9.

As shown in fig. 17, two guide blocks 44 are circumferentially and uniformly mounted on the outer circumferential surface of the charging barrel 16 at the end away from the driving unit 3; as shown in fig. 13, two guide grooves 43 are uniformly formed on the inner circumferential surface of the slide disk 9 in the circumferential direction, and as shown in fig. 10, the slide disk 9 is mounted on the syringe barrel 16 by the engagement of the two guide grooves 43 and the two guide blocks 44, and the slide disk 9 can slide along the syringe barrel 16 without rotating by the engagement of the guide blocks 44 and the guide grooves 43.

As shown in fig. 17, a guide ring 45 is mounted on the outer circumferential surface of the end of the syringe barrel 16 away from the drive unit 3; as shown in fig. 16, the trigger shell 10 has an annular guide groove 35 formed on the inner circumferential surface thereof, and as shown in fig. 15, the trigger shell 10 is mounted on the syringe barrel 16 by the engagement of the annular guide groove 35 and the guide ring 45, and the trigger shell 10 can be rotated along the axis of the syringe barrel 16 without sliding by the engagement of the guide ring 45 and the annular guide groove 35.

As shown in fig. 10 and 12, one end of the return spring 29 is mounted on the sliding disk 9, and the other end of the return spring 29 is mounted on the outer ring of the one-way clutch 8 by welding; the return spring 29 serves to return the sliding disk 9 and at the same time to return the connecting ring to its original position in the direction of rotation by the outer ring of the one-way clutch.

The return spring 29 is a compression spring.

As shown in fig. 19, a plurality of mounting grooves 49 are uniformly formed on the outer circumferential surface of the driving ring 28 in the circumferential direction, a plurality of trigger blocks 31 are respectively mounted on the driving ring 28 by being matched with the mounting grooves 49 formed on the driving ring 28, and each trigger block 31 and the corresponding mounting groove 49 are respectively provided with one trigger driving spring 30; when the sliding disk 9 drives the outer ring of the one-way clutch 8 to rotate, the one-way clutch 8 drives the rotating spring 51 to rotate, the rotating spring 51 gives a rotating force to the trigger shell 10, the trigger shell 10 drives the driving shifting block 48 mounted thereon to rotate around the axis of the trigger shell 10 under the rotating force, when the driving shifting block 48 contacts with the corresponding trigger block 31 on the driving ring 28, the trigger block 31 moves towards the inner side of the corresponding mounting groove 49 opened on the driving ring 28 under the shifting action of the driving shifting block 48, the trigger block 31 gives a reaction force to the driving shifting block 48, so that the trigger shell 10 is relatively static, the rotating spring 51 exerts a force, when the extreme point of the driving shifting block 48 on the side close to the trigger block 31 moves to the extreme point of the trigger block 31, the sliding disk 9 stops driving the trigger shell 10, and at this time, the trigger block 31 loses the limit to the driving shifting block 48, in this state, the trigger housing, under the action of the rotation spring 51, will bring the driving dial 48 to rotate rapidly, so that the driving dial 48 moves into contact with a trigger block 31 located at the rear side thereof.

The trigger driving spring 30 is a compression spring.

The drive ring 28 is mounted to the barrel 16 by welding.

In the specific working process, when the injection mold designed by the invention is used, the screw 12 is driven to rotate by the driving unit 3, the screw 12 rotates to drive the driving thread 47 to provide driving force for the plastic added into the injection cylinder 16 through the feeding funnel 2, so that the plastic in the injection cylinder 16 is heated by the heater 6 and then moves into a gap between one end of the rotating shell 7, which is provided with the injection port 24, and the sliding disc 9, and the plastic moving to the section flows into a corresponding mold cavity through the injection port 24 on the rotating shell 7 and the discharge port 18 formed on the mounting shell 14 communicated with the injection port 24; when the mold cavity is filled with plastic, the amount of plastic between the end of the rotating shell 7, in which the injection port 24 is formed, and the sliding disk 9 is increased, the pressure of the plastic is increased, the plastic in the section presses the sliding disk 9 to slide, the sliding disk 9 presses the trigger driving block 33 mounted on the outer ring of the one-way clutch 8 through the helical teeth 42 mounted thereon, so that when the outer ring of the one-way clutch 8 rotates, the one-way clutch 8 drives the rotating spring 51 to rotate, the rotating spring 51 gives a rotating force to the trigger shell 10, the trigger shell 10 drives the driving shifting block 48 mounted thereon to rotate around the axis of the trigger shell 10 under the rotating force, when the driving shifting block 48 contacts with the corresponding triggering block 31 on the driving ring 28, the triggering block 31 moves towards the inside of the corresponding mounting groove 49 formed on the driving ring 28 under the action of the driving shifting block 48, and the triggering block 31 gives a reaction force to the driving shifting block 48, the trigger shell 10 is relatively static, the rotating spring 51 exerts force, when the extreme point of the driving shifting block 48 close to one side of the trigger block 31 moves to the most sharp position of the trigger block 31, the sliding disc 9 stops driving the trigger shell 10, and the trigger block 31 loses the limit on the driving shifting block 48 at the moment, so that the trigger shell can drive the driving shifting block 48 to rapidly rotate under the action of the rotating spring 51, and the injection port 24 on the rotating shell 7 is communicated with the other one of the two discharge ports 18 formed in the mounting shell 14; injecting in the corresponding mould cavity of the discharge port 18; the continuity of the injection is ensured while the drive dial 48 is moved into contact with one of the trigger blocks 31 located on the rear side thereof.

Claims

1. The utility model provides a nozzle structure of installation on injection mold which characterized in that: the injection molding device comprises an injection molding mechanism, a feeding funnel, a driving unit, a first support, a bottom plate and a second support, wherein the feeding funnel is installed on the injection molding mechanism, and the injection molding mechanism is installed on the bottom plate through the two second supports which are symmetrically distributed; the driving unit is arranged on the bottom plate through a first support; the driving unit provides power for the plastic liquid in the injection molding mechanism to flow;

the injection molding mechanism comprises a rotating shell, a sliding disc, a trigger shell, an installation shell, a heater, a screw rod, an injection cylinder, a driving thread, a reset spring, a driving ring, a trigger driving spring, a trigger block, a one-way clutch and a rotating spring, wherein one end of the installation shell is uniformly provided with two discharge ports which are communicated with each other inside and outside in the circumferential direction on the end surface of the installation shell, and the two discharge ports are respectively provided with a discharge nozzle; the mounting shell is mounted on the bottom plate through a second support; the inner circle surface of the installation shell is provided with a guide rail ring, one end of the rotating shell is provided with an injection port which is communicated with the inside and the outside on the end surface, the outer circle surface of the rotating shell is provided with a guide support ring, the rotating shell is installed in the installation shell through the matching of the guide support ring and the guide rail ring, and the injection port on the rotating shell is correspondingly matched with two discharge ports on the installation shell; a plurality of heaters are uniformly arranged on the outer circular surface of the rotating shell;

one end of the material injection cylinder is an opening end, and the other end of the material injection cylinder is fixedly arranged at one end of the mounting shell, which is provided with a discharge hole; the screw rod is provided with a driving thread, the screw rod is nested and installed on the inner side of the material injection barrel, and one end of the screw rod penetrates through the material injection barrel and a screw rod hole formed in the installation shell to be connected with the driving unit;

the sliding disc is arranged at one end of the charging barrel, which is far away from the driving unit, through sliding fit; the one end of the sliding disc close to the trigger shell is provided with a mounting ring, the outer circular surface of the mounting ring is uniformly provided with a plurality of helical teeth in the circumferential direction, the inner ring of the one-way clutch is arranged on the charging barrel in a rotating fit manner, and a return spring is arranged between the outer ring of the one-way clutch and the sliding disc; one end of the outer ring of the one-way clutch, which is close to the sliding disc, is provided with a connecting ring, a plurality of trigger driving blocks are uniformly arranged on the connecting ring in the circumferential direction, and the trigger driving blocks arranged on the connecting ring are correspondingly matched with the helical teeth arranged on the mounting ring one by one; the trigger shell is arranged on the charging barrel in a rotating fit manner, and a rotating spring is arranged between the trigger shell and the inner ring of the one-way clutch; the sliding disc moves towards one side of the trigger shell along the axial direction of the material injection cylinder to drive the outer ring of the one-way clutch to rotate;

a driving shifting block is arranged on the inner circular surface of one end of the trigger shell close to the driving unit; the driving ring is arranged on the charging barrel, and a plurality of trigger blocks which freely contract in the driving ring are uniformly arranged on the circumferential direction of the outer circular surface of the driving ring; the trigger block is matched with the driving shifting block;

the trigger shell is connected with the rotating shell through a first gear and a second gear;

a heater is arranged on the outer circular surface of one end of the material injection cylinder, which is close to the driving unit;

through the speed change of the first gear and the second gear, the sliding disc moves towards the trigger shell once, and the rotating shell rotates 180 degrees;

a connecting circular hole is formed in the outer circular surface of one end, close to the driving unit, of the charging barrel; a feeding hole is formed in the outer circular surface of one end, close to the driving unit, of the mounting shell, the feeding funnel is mounted on the mounting shell through the feeding hole, the lower end of the feeding funnel penetrates through a connecting circular hole in the material injection cylinder and is connected with the inner side of the material injection cylinder, and the feeding funnel is communicated with the material injection cylinder;

a guide ring is arranged on the outer circular surface of one end of the charging barrel, which is far away from the driving unit; the inner circle surface of the trigger shell is provided with an annular guide groove, and the trigger shell is arranged on the charging barrel through the matching of the annular guide groove and the guide ring;

one end of the return spring is arranged on the sliding disc, and the other end of the return spring is arranged on the outer ring of the one-way clutch in a welding mode;

the return spring is a compression spring;

a plurality of mounting grooves are uniformly formed in the circumferential direction of the outer circumferential surface of the driving ring, a plurality of trigger blocks are respectively mounted on the driving ring through matching with the mounting grooves formed in the driving ring, and a trigger driving spring is mounted in each trigger block and the corresponding mounting groove;

the trigger driving spring is a compression spring;

the driving ring is installed on the injection barrel in a welding mode.

2. An injection mold mounted nozzle structure as claimed in claim 1, wherein: a first gear ring is arranged on the inner circular surface of one end of the rotating shell close to the driving unit; one end of the trigger shell, which is close to the driving unit, is provided with a circular groove, and the inner circular surface of the circular groove is provided with a second toothed ring; the fixed plate is installed on the material injection cylinder, one end of the gear shaft is installed on the fixed plate, the second gear is installed at one end of the gear shaft and meshed with the second gear ring installed on the trigger shell, and the first gear is installed at the other end of the gear shaft and meshed with the first gear ring installed on the rotating shell.

3. An injection mold mounted nozzle structure as claimed in claim 1, wherein: and a limiting ring for limiting the sliding disc is arranged in the rotating shell.

4. An injection mold mounted nozzle structure as claimed in claim 1, wherein: two guide blocks are uniformly arranged on the circumferential direction of the outer circular surface of one end of the charging barrel, which is far away from the driving unit; two guide grooves are uniformly formed in the inner circumferential surface of the sliding disc in the circumferential direction, and the sliding disc is installed on the material injection cylinder through the matching of the two guide grooves and the two guide blocks.