CN210940211U

CN210940211U - Feeding mechanism of injection molding machine

Info

Publication number: CN210940211U
Application number: CN201921686792.7U
Authority: CN
Inventors: 陈海永; 崔龙
Original assignee: Dibei Molding Suzhou Co ltd
Current assignee: Dibei Molding Suzhou Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-07
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a feeding mechanism of injection molding machine, it includes the storage hopper and the charge-in pipeline of being connected with the storage hopper, and charge-in pipeline is linked together with the die cavity of injection molding machine, sets up a plurality of fender material rings along charge-in pipeline's radial direction on charge-in pipeline's inside wall, and the internal diameter that keeps off the material ring reduces gradually to the one end that is close to the die cavity of charge-in pipeline from the one end of keeping away from the die cavity of charge-in pipeline, is provided with the heat preservation clamp cover on charge-in pipeline's lateral wall, keeps off the material ring from the edge of being connected with charge-in pipeline to being. Utilize the utility model discloses a reinforced mechanism of injection molding machine is when carrying out the injection molding material's injection, and the flow of injection molding material reduces gradually, has effectively avoided the injection molding material too big to charge-in pipeline's local pressure, reducible local long-pending material at charge-in pipeline again and take place to block up in current-limiting structure department, and it can ensure that the injection molding material can not take place the problem that the temperature reduced at the injection process.

Description

Feeding mechanism of injection molding machine

Technical Field

The utility model relates to an injection molding machine technical field, concretely relates to reinforced mechanism of injection molding machine.

Background

An injection molding machine generally comprises an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system and a lubricating system. When injection molding is carried out, the injection molding material is heated to a certain temperature and then melted, the melted injection molding material is injected into a cavity of an injection mold of an injection molding machine by using an injection system, and after cooling and molding, demolding is carried out to obtain an injection molding piece.

In order to ensure going on continuously of process of moulding plastics, need set up the storage hopper in order to keep in the fused injection molding material usually, rethread charge-in pipeline is connected the storage hopper with the die cavity of injection molding machine, because the die cavity is located the middle part of injection molding machine mostly, therefore still can set up the pan feeding passageway with the charge-in pipeline intercommunication on the mould, the major diameter of charge-in pipeline can be greater than the diameter of pan feeding passageway usually, therefore often set up the current-limiting structure of mouth type in the middle of the pan feeding passageway on charge-in pipeline and the mould, therefore when carrying out the injection molding material, local pressure at current-limiting structure department is too big, make it easily burst or cause the injection molding material to block up current-limiting. And along with the inflow of injection molding material, the injection molding material temperature in the charge-in pipeline can reduce, if the temperature reduces too much will cause the injection molding material local to condense, influence the effect of moulding plastics.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a can be stable and quick carry out the reinforced mechanism of the injection molding machine of the injection of molten injection molding material, it is at the process of injecting the injection molding material, can have good thermal insulation performance to the injection molding material.

The utility model discloses a feeding mechanism of injection molding machine include the storage hopper and with the charge-in pipeline that the storage hopper is connected, charge-in pipeline is linked together with the die cavity along charge-in pipeline's radial direction has set gradually a plurality of fender material rings, keep off the internal diameter of material ring and follow charge-in pipeline's keeping away from the one end of die cavity to charge-in pipeline's being close to the one end of die cavity reduces gradually, the storage hopper is located charge-in pipeline's top be provided with the heat preservation on charge-in pipeline's the lateral wall and press from both sides the cover. Therefore, in the process that the injection molding material sequentially passes through the material blocking rings with gradually reduced inner diameters, the flow of the injection molding material is gradually reduced, so that the local pressure of the injection molding material on the feeding pipeline is prevented from being too high, and the local material accumulation of the feeding pipeline can be reduced to block the flow limiting structure; in addition, through set up the heat preservation cover that presss from both sides at the lateral wall of charge-in pipeline, effectively solved the problem that the injection molding material is pouring into the process temperature reduction into.

Furthermore, the inner surfaces of the two end parts of the heat-insulating jacket are provided with clamping edges extending towards the longitudinal central axis of the heat-insulating jacket, annular clamping grooves are formed in the outer side wall of the feeding pipeline and correspond to the clamping edges of the heat-insulating jacket, and the clamping edges and the clamping grooves are in interference fit. Therefore, the gap between the heat-insulating jacket and the feeding pipeline is effectively eliminated or reduced, so that the injection molding material in the feeding pipeline has better temperature stability, and the temperature can not be reduced too obviously along with the injection process.

Furthermore, the clamping edge comprises a clamping edge inner edge close to one side of the longitudinal central axis of the heat-insulation jacket and a clamping edge outer edge far away from one side of the longitudinal central axis of the heat-insulation jacket, the outer edge of the clamping edge inner edge is connected with the inner edge of the clamping edge outer edge, and the clamping edge inner edge has elasticity. Therefore, through the tight fit of the inner edge of the clamping edge and the clamping groove, excessive heat loss can not occur at the clamping groove, and the injection molding material in the feeding pipeline is ensured to have higher temperature stability.

Furthermore, the length of the heat-insulating jacket is smaller than that of the feeding pipeline, and at least one pair of clamping grooves is arranged on the outer side wall of the feeding pipeline. Therefore, the arrangement position and the number of the heat-insulating jackets can be adjusted according to the needs, and the heat-insulating jackets can be arranged in the area needing heat insulation.

Furthermore, a hollow cavity is arranged inside the heat-preservation jacket.

Furthermore, the heat-insulating jacket comprises a first jacket body and a second jacket body which are arranged in bilateral symmetry, the cross sections of the first jacket body and the second jacket body enclose a closed geometric shape, and magnetic stripes are arranged on the surfaces of the side walls, close to each other, of the first jacket body and the second jacket body. Therefore, the first sleeve body and the second sleeve body are tightly connected and can be easily detached when the first sleeve body and the second sleeve body need to be detached.

Furthermore, at least one heat medium inlet and at least one heat medium outlet are respectively arranged on the outer surfaces of the first sleeve body and the second sleeve body.

Furthermore, the baffle ring is gradually inclined downwards from the edge connected with the feeding pipeline to the edge close to the longitudinal central axis of the feeding pipeline. The injection molding compound can thus flow rapidly in the feed line and into the mold cavity.

Furthermore, the inner edge of the material blocking ring closest to the discharge opening of the feeding pipeline is connected with the discharge opening. Therefore, the injection molding material after flow limiting is quickly discharged into the cavity from the discharge port.

Further, the inner diameter of the storage hopper is gradually increased from top to bottom. So that the temperature of the material entering the storage hopper is not easy to reduce earlier, and the injection molding material is ensured to have higher temperature stability.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a first embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of a heat-insulating jacket according to a first embodiment of the present invention;

FIG. 4 is a schematic structural view illustrating a heat-insulating jacket disposed on a feeding pipe according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first sleeve body according to a second embodiment of the present invention.

In the figure:

1-storage hopper, 2-feeding pipeline, 21-material retaining ring, 22-discharge port, 23-clamping groove, 3-heat preservation jacket, 31-clamping edge, 311-clamping edge inner edge, 312-clamping edge outer edge and 4-magnetic strip.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

The first embodiment is as follows:

referring to fig. 1, the utility model discloses a reinforced mechanism of injection molding machine includes storage hopper 11 and the charge-in pipeline 2 of being connected with storage hopper 1, charge-in pipeline 2 with set up in the material mouth of storage hopper 1 lower surface and be connected, charge-in pipeline 2 be with horizontal plane vertically direction setting, charge-in pipeline 2 is linked together with the die cavity of injection molding machine, therefore, the injection molding material in the storage hopper 1 can get into the die cavity fast under the effect of gravity. The inner diameter of the storage hopper 1 is gradually increased from top to bottom, so that the temperature of the material entering the storage hopper 1 earlier is not easy to reduce, and the temperature stability of the injection molding material is ensured.

Along the radial direction of charge-in pipeline 2 on the inside wall of charge-in pipeline 2, from the top down has set gradually a plurality of material blocking rings 21, the internal diameter from the top down of material blocking ring 21 reduces gradually, material blocking ring 21 from the edge of being connected with charge-in pipeline 2's inside wall to the edge of being close to charge-in pipeline 2's vertical axis slope down gradually, therefore the injection molding material that gets into in charge-in pipeline 2 is the flow under the effect of material blocking ring 21 reduces gradually, but the velocity of flow is increasingly fast, therefore can improve the inflow speed of the injection molding material that gets into in the die cavity. The diameter of the inner edge of the material blocking ring 21 is gradually increased from top to bottom, so that the flow of the injection molding material is gradually reduced, and the phenomenon that the injection molding material blocks the feeding pipeline 2 due to local material accumulation in the feeding pipeline 2 is avoided by using a nozzle-type flow limiting structure in the prior art.

The inner edge of the material retaining ring 21 closest to the discharge opening of the feeding pipe 2 is connected with the discharge opening 22, so that the injection molding material subjected to flow limitation is quickly discharged into the cavity from the discharge opening 22.

At least one heat-insulating jacket 3 is arranged on the outer side wall of the feeding pipeline 2, so that the problem that the injection molding effect is influenced by temperature reduction in the process of conveying the injection molding material through the feeding pipeline 2 can be avoided. Referring to fig. 2 and 3, the utility model discloses an internal surface of two tip of heat preservation clamp cover 3 all is provided with the joint edge 31 that extends to its vertical axis, joint edge 31 is including the joint edge inner edge 311 that is close to heat preservation clamp cover 3 vertical axis one side and keep away from the joint edge outer edge 312 that heat preservation clamp cover 3 vertical axis one side, the outward flange of joint edge inner edge 311 and the inward flange looks fixed connection of joint edge outer edge 312, joint edge inner edge 311 adopts elastic material, prepare like rubber etc. and come. The outer side wall of the feeding pipeline 2 is provided with an annular clamping groove 23 corresponding to the clamping edge inner edge 311 of the heat-insulating jacket 3, and the clamping edge inner edge 311 is in interference fit with the clamping groove 23, so that the heat-insulating jacket 3 can coat the outer surface of the feeding pipeline 2, and the heat-insulating jacket 3 is ensured to have a better heat-insulating effect under the action of the clamping edge inner edge 311. As a preferred embodiment of the present invention, the outer edge 312 of the clamping edge can be made of a hard material such as plastic or metal, so that the inner edge 311 of the clamping edge can be easily inserted into the clamping groove 23 by applying pressure to the outer edge 312 of the clamping edge.

Referring to fig. 4, the length of the thermal insulation jacket 3 is less than that of the feeding pipe 2, and at least one pair of clamping grooves 23 is arranged on the outer side wall of the feeding pipe 2, so that a plurality of thermal insulation jackets 3 can be arranged on the feeding pipe 2, or the thermal insulation jackets 3 are only arranged locally as required, which brings great convenience to the use.

The utility model discloses a heat preservation presss from both sides the inside hollow cavity that is provided with of cover 3, therefore can play fine heat preservation effect. As a preferred embodiment of the utility model, the heat preservation effect of the injection molding material in the feeding pipeline 2 can be realized by introducing a heating medium (such as hot water) into the heat preservation jacket 3.

Example two:

the difference between the first embodiment and the second embodiment is that the thermal insulation jacket 3 comprises a first jacket body and a second jacket body which are arranged symmetrically left and right, and the first jacket body and the second jacket body have the same structure, so that the thermal insulation jacket 3 and the feeding pipeline 2 can be conveniently disassembled and assembled. Referring to fig. 5, the first sleeve and the second sleeve of the present invention are both in the shape of a hollow semi-cylinder, and may be in other geometric shapes, so that the first sleeve and the second sleeve can be matched with each other to coat the outer surface of the feeding pipe 2. In this embodiment, the surfaces of the side walls, which are close to each other, of the first sleeve body and the second sleeve body are provided with the magnetic strips 4, so that the first sleeve body and the second sleeve body can be attracted to each other, and the heat-insulating jacket 3 has a better heat-insulating effect. The outer surfaces of the first sleeve body and the second sleeve body are respectively provided with at least one heating medium inlet and at least one heating medium outlet.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a feeding mechanism of injection molding machine, including the storage hopper and with the charge-in pipeline that the storage hopper is connected, charge-in pipeline is linked together with the die cavity, its characterized in that along charge-in pipeline's radial direction has set gradually a plurality of material rings that keep off on the inside wall, keep off the internal diameter of material ring and follow charge-in pipeline's keeping away from the one end of die cavity to being close to of charge-in pipeline the one end of die cavity reduces gradually, the storage hopper is located charge-in pipeline's top be provided with the heat preservation on the lateral wall of charge-in pipeline and press from both sides the cover.

2. The feeding mechanism of an injection molding machine according to claim 1, wherein the inner surfaces of the two end portions of the heat-insulating jacket are provided with clamping edges extending toward the longitudinal central axis thereof, the outer side wall of the feeding pipeline is provided with annular clamping grooves corresponding to the clamping edges of the heat-insulating jacket, and the clamping edges and the clamping grooves are in interference fit.

3. The feeding mechanism of an injection molding machine according to claim 2, wherein said clamping edge comprises a clamping edge inner edge close to one side of the longitudinal central axis of said heat-insulating jacket and a clamping edge outer edge far from one side of the longitudinal central axis of said heat-insulating jacket, an outer edge of said clamping edge inner edge is connected with an inner edge of said clamping edge outer edge, and said clamping edge inner edge has elasticity.

4. The feeding mechanism of injection molding machine according to claim 2, wherein the length of said heat-insulating jacket is smaller than the length of said feeding pipe, and at least a pair of said catching grooves are provided on the outer side wall of said feeding pipe.

5. The charging mechanism of an injection molding machine according to any one of claims 1 to 4, wherein a hollow cavity is provided inside the heat-insulating jacket.

6. The feeding mechanism of an injection molding machine as claimed in claim 4, wherein the heat-insulating jacket comprises a first jacket body and a second jacket body which are arranged in bilateral symmetry, the cross sections of the first jacket body and the second jacket body jointly enclose a closed geometric shape, and the surfaces of the side walls of the first jacket body and the second jacket body which are close to each other are provided with magnetic stripes.

7. The feeding mechanism of an injection molding machine according to claim 6, wherein at least one heating medium inlet port and at least one heating medium outlet port are provided on the outer surfaces of the first sleeve body and the second sleeve body, respectively.

8. The charging mechanism of an injection molding machine according to any one of claims 1 to 4, wherein the dam ring is gradually inclined downward from an edge connected to the feed pipe to an edge near a central longitudinal axis of the feed pipe.

9. The charging mechanism of an injection molding machine according to claim 8, wherein an inner edge of the dam ring closest to the discharge port of the feed pipe is connected to the discharge port.

10. The charging mechanism of an injection molding machine according to any one of claims 1 to 4, wherein the inner diameter of the storage hopper increases gradually from top to bottom.