CN214163894U

CN214163894U - High-precision high-injection-quantity dual-step injection device of injection molding machine

Info

Publication number: CN214163894U
Application number: CN202023146490.6U
Authority: CN
Inventors: 董福来; 孙俊
Original assignee: Hefei Suntory Plastics Co ltd
Current assignee: Hefei Suntory Plastics Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-10
Anticipated expiration: 2030-12-23

Abstract

The application relates to a high-precision high-injection-quantity two-step injection device of an injection molding machine, which comprises an injection seat, an injection tube fixed on the injection seat, an injection oil cylinder arranged at the end part of the injection tube and an injection rod penetrating the injection tube and movably and hermetically connected with the inner wall of the injection tube, wherein the injection tube comprises a plurality of injection mold sleeves which are sequentially arranged from the injection oil cylinder to the nozzle direction of the injection molding machine, a sealing component for sealing the injection mold sleeves is arranged between the adjacent injection mold sleeves, and the adjacent injection mold sleeves are communicated and detachably mounted through the sealing component; the length of the injection rod is greater than that of the injection tube. This application has the effect of the single volume of moulding plastics that enlarges the injection tube when reforming transform the injection molding machine.

Description

High-precision high-injection-quantity dual-step injection device of injection molding machine

Technical Field

The application relates to the field of injection molding machines, in particular to a high-precision and high-injection-quantity dual-stage injection device of an injection molding machine.

Background

An injection molding machine is also known as an injection molding machine or an injection machine. It is a main forming equipment for making various shaped plastic products from thermoplastic plastics or thermosetting plastics by using plastic forming mould. The injection molding machine can be divided into a vertical type, a horizontal type, a full-electric type, a single-stage type, a double-stage type and the like. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. The injection system generally comprises components such as an injection tube, an oil cylinder, an injection rod and the like, and has the characteristic of high precision.

The chinese utility model patent with publication number CN206201324U discloses a double-stage horizontal injection molding machine, which comprises a plasticizing mechanism, an injection mechanism, a nozzle and a three-way valve, wherein the plasticizing mechanism and the injection mechanism are coaxially arranged along the vertical direction, the nozzle and the plasticizing mechanism are coaxially arranged horizontally and transversely, the right end of the plasticizing mechanism is connected with the upper end of the three-way valve, the right end of the injection mechanism is connected with the left end of the three-way valve, the left end of the nozzle is connected with the right end of the three-way valve, and the three-way valve can respectively realize the conduction of the plasticizing mechanism and the injection mechanism and the conduction of the injection mechanism and the nozzle; the plasticizing mechanism plasticizes the raw material into a molten material, when the plasticizing mechanism is communicated with the injection mechanism, the plasticizing mechanism pushes the molten material to vertically flow into the injection mechanism, and when the injection mechanism is communicated with the nozzle, the injection mechanism pushes the flowed-in molten material to the nozzle horizontally and transversely to eject the molten material. The injection mechanism comprises an injection tube, an injection seat, an injection rod and an injection oil cylinder, wherein the injection tube is arranged on the injection seat and is provided with an injection movable cavity, the injection movable cavity penetrates through the injection tube along the axial direction of the injection tube, the injection movable cavity enables the right end part of the injection tube to form a melt injection inlet and outlet and enables the left end part of the injection tube to form an injection rod assembly port, and the injection rod is assembled in the injection movable cavity along the axial direction of the injection tube and is connected with the output end of the injection oil cylinder. The injection oil cylinder is arranged at the left end part of the injection seat and drives the injection rod to do linear reciprocating motion in the injection tube, and the moving injection rod pushes the molten material in the injection tube to the nozzle. Thereby through the straight reciprocating motion of injection pole constantly propelling movement to the nozzle with the melt in the injection tube with the shaping product, simple structure and effective.

However, the injection mechanism has a constant inner volume of the syringe, and therefore, the injection amount per injection is limited, which is disadvantageous in that the injection amount per injection of the syringe is increased when the injection molding machine is modified.

SUMMERY OF THE UTILITY MODEL

In order to enlarge the single injection molding quantity of an injection cylinder when an injection molding machine is modified, the application provides a high-precision high-injection-quantity double-step injection device of the injection molding machine.

The application provides a high injection quantity's of high accuracy dual-step injection molding machine injection device adopts following technical scheme:

a high-precision high-injection-quantity two-step injection device of an injection molding machine comprises an injection seat, an injection tube fixed on the injection seat, an injection oil cylinder arranged at the end part of the injection tube and an injection rod penetrating the injection tube and movably and hermetically connected with the inner wall of the injection tube, wherein the injection tube comprises a plurality of injection mold sleeves sequentially arranged from the injection oil cylinder to the nozzle direction of the injection molding machine, a sealing assembly used for sealing the injection mold sleeves is arranged between the adjacent injection mold sleeves, and the adjacent injection mold sleeves are communicated and detachably mounted through the sealing assembly; the length of the injection rod is greater than that of the injection tube.

Through adopting above-mentioned technical scheme, the injection tube passes through seal assembly demountable installation by a plurality of injection die sleeves, and communicates and sealing connection between the adjacent injection tube to can be when reforming transform the injection molding machine through increasing the injection die sleeve and extension injection tube, make the injection tube of injection device after reforming transform the capacity bigger, thereby increased the single volume of moulding plastics of injection molding machine injection tube after reforming transform.

Preferably, the sealing assembly comprises a flange plate which is sleeved on the injection mold sleeve and fixed with the outer wall of the injection mold sleeve, and a clamping part arranged on the flange plate, wherein the flange plate is arranged at two ends of the injection mold sleeve and is flush with two ends of the injection mold sleeve respectively; the side wall of the flange plate is provided with an inserting ring groove, and a sealing ring which is in inserting fit with the inserting ring groove is fixed on the side wall of the flange plate; and the adjacent flange plates are clamped and fixed through the clamping parts.

Through adopting above-mentioned technical scheme, when pressing from both sides tightly between the ring flange, the sealing washer on the ring flange is pegged graft to the grafting annular on the adjacent ring flange in to make and form annular structure of blocking between the laminating surface of ring flange, be favorable to strengthening the leakproofness between the injection die sleeve.

Preferably, the flange plate side wall is provided with an elastic layer, and the elastic layer covers the inner wall of the splicing ring groove.

Through adopting above-mentioned technical scheme, the setting of elastic layer for clearance between the ring flange is filled by the elastic layer, has strengthened the leakproofness between the ring flange, and the elastic layer covers the grafting annular inner wall, makes the leakproofness between grafting annular and the sealing washer better.

Preferably, the clamping part comprises a sealing ring sleeve sleeved on the adjacent flange plate, a pressure plate rotatably mounted on the sealing ring sleeve, a fastening bolt penetrating through the adjacent flange plate and a fastening nut sleeved on the end part of the fastening bolt and in threaded connection with the fastening bolt; the end part of the fastening bolt penetrates through the pressing plate and the sealing ring sleeve, and the fastening nut is arranged on one side, far away from the pressing plate, of the sealing ring sleeve.

Through adopting above-mentioned technical scheme, when fastening nut screwed, the pressure strip supported tight ring flange for press from both sides tight seal, simple to operate between the ring flange.

Preferably, the inner wall of the sealing ring sleeve, which is perpendicular to the side wall of the flange plate, is fixedly provided with an elastic sealing layer, and the elastic sealing layer is tightly abutted against the edges of the two flange plates in the sealing ring sleeve.

Through adopting above-mentioned technical scheme, the setting of elastic sealing layer for between the adjacent ring flange.

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

1. the injection tube is detachably mounted through the sealing assembly by the plurality of injection mold sleeves, and the adjacent injection tubes are communicated and hermetically connected, so that the injection tube is lengthened by adding the injection mold sleeves when the injection molding machine is modified, the capacity of the injection tube of the modified injection device is larger, and the single injection molding quantity of the injection tube of the injection molding machine is increased;

2. when the flanges are clamped tightly, the sealing rings on the flanges are inserted into the insertion ring grooves on the adjacent flanges, so that an annular blocking structure is formed between the attaching surfaces of the flanges, and the sealing performance between the injection mold sleeves is enhanced.

Drawings

FIG. 1 is a schematic structural diagram of an injection device of a high-precision high-injection-quantity two-stage injection molding machine according to an embodiment of the present application.

FIG. 2 is a schematic structural view of a seal assembly according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Description of reference numerals: 1. an injection seat; 2. an injection tube; 21. injecting a mold sleeve; 3. an injection rod; 4. an injection oil cylinder; 5. a seal assembly; 51. a flange plate; 511. a seal ring; 512. inserting ring grooves; 513. an elastic layer; 52. a clamping portion; 521. sealing the ring sleeve; 5211. an elastomeric sealing layer; 522. a compression plate; 523. fastening a bolt; 524. and (5) tightening the nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses high-precision and high-injection-quantity two-stage injection device of an injection molding machine. Referring to fig. 1, the injection apparatus of the high-precision high-injection-volume two-stage injection molding machine includes an injection holder 1, an injection tube 2, an injection rod 3 (see fig. 2), and an injection cylinder 4. Injection seat 1 is fixed to be set up in the factory building subaerial, and injection tube 2 wears to locate on injection seat 1 and with injection seat 1 fixed mounting, and injection tube 2 includes a plurality of injection die sleeves 21, all sets an injection seat 1 on every injection die sleeve 21 for support injection module. Referring to fig. 2, the injection rod 3 is inserted into the injection tube 2, the injection rod 3 is slidably fitted and movably and hermetically connected with the inner wall of the injection tube 2, the injection cylinder 4 is fixedly disposed at one end of the injection tube 2 far away from the nozzle of the injection molding machine, and the end of the piston rod of the injection cylinder 4 is fixedly connected with the end of the injection rod 3 far away from the nozzle of the injection molding machine, so as to drive the injection rod 3 to move in the injection tube 2. Since the technical essential of this solution is mainly the injection cartridge 2, the rest of the components of the injection device will not be described in too much detail.

Referring to fig. 1, a plurality of injection mold housings 21 are arranged in a linear shape in sequence in a direction from an injection cylinder 4 to a nozzle of an injection molding machine, and end surfaces between adjacent injection mold housings 21 are overlapped. The sealing assembly 5 is arranged between the adjacent injection mold sleeves 21, as shown in fig. 2, the sealing assembly 5 includes two flange plates 51 which are sleeved on the injection mold sleeves 21 and fixed with the outer walls of the injection mold sleeves 21, and clamping portions 52 arranged on the flange plates 51, the two flange plates 51 are arranged on a single injection mold sleeve 21, the two flange plates 51 are arranged at two ends of the injection mold sleeve 21 and are respectively flush with two ends of the injection mold sleeve 21, and the flange plates 51 between the adjacent injection mold sleeves 21 are attached to each other. As shown in fig. 3, a plugging ring groove 512 is formed on a side wall of the flange 51 close to the adjacent flange 51, and a sealing ring 511 which is plugged and matched with the plugging ring groove 512 is fixed on the side wall of the flange 51 close to the adjacent flange 51. In addition, the adjacent flange plates 51 are provided with elastic layers 513 on the side walls close to each other, the thickness of each elastic layer 513 is uniform and is made of high-temperature-resistant rubber, and the elastic layers 513 cover the inner walls of the inserting ring grooves 512, so that when the adjacent flange plates 51 are attached to each other and tightly abutted to each other, the flange plates 51 are sealed.

Referring to fig. 2 and 3, the clamping portion 52 includes a sealing ring 521 sleeved on the adjacent flange 51, a pressing plate 522 rotatably mounted on the sealing ring 521, a fastening bolt 523 inserted through the adjacent flange 51, and a fastening nut 524 sleeved on an end of the fastening bolt 523 and threadedly coupled with the fastening bolt 523. The end of the fastening bolt 523 sequentially penetrates the pressing plate 522, the two flanges 51 attached to each other, and the sealing ring sleeve 521, and the fastening nut 524 is disposed on one side of the sealing ring sleeve 521 away from the pressing plate 522. When the fastening nut 524 is screwed, the pressing plate 522 abuts against the flanges 51, so that the flanges 51 are clamped and sealed, and the installation is convenient. An elastic sealing layer 5211 is fixedly arranged on the inner wall of the sealing ring sleeve 521, which is perpendicular to the side wall of the flange 51, and the elastic sealing layer 5211 is tightly abutted against the edges of the two flanges 51 in the sealing ring sleeve 521.

The implementation principle of the injection device of the high-precision high-injection-quantity two-stage injection molding machine in the embodiment of the application is as follows: injection cylinder 2 passes through seal assembly 5 demountable installation by a plurality of injection die sets 21, and communicates and sealing connection between 2 adjacent injection cylinders to can be when reforming transform the injection molding machine through increasing injection die set 21 and extension injection cylinder 2, make the injection cylinder 2's of injection device after reforming transform capacity bigger, thereby increased the single volume of moulding plastics of 2 injection molding machines injection cylinders after reforming transform.

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 high injection quantity's of high accuracy dual-step injection molding machine injection device, includes injection seat (1), is fixed in injection tube (2) on injection seat (1), set up in injection cylinder (4) of injection tube (2) tip and wear to locate in injection tube (2) and with injection tube (2) inner wall activity sealing connection's injection pole (3), its characterized in that: the injection cylinder (2) comprises a plurality of injection mold sleeves (21) which are sequentially arranged from the injection oil cylinder (4) to the nozzle direction of the injection molding machine, a sealing assembly (5) for sealing the injection mold sleeves (21) is arranged between the adjacent injection mold sleeves (21), and the adjacent injection mold sleeves (21) are communicated and detachably mounted through the sealing assembly (5); the length of the injection rod (3) is larger than that of the injection tube (2).

2. A high precision high injection quantity two-stage injection molding machine injection apparatus according to claim 1, characterized in that: the sealing assembly (5) comprises a flange plate (51) which is sleeved on the injection mold sleeve (21) and fixed with the outer wall of the injection mold sleeve (21), and a clamping part (52) arranged on the flange plate (51), wherein the flange plate (51) is arranged at two ends of the injection mold sleeve (21) and is flush with two ends of the injection mold sleeve (21) respectively; an inserting ring groove (512) is formed in the side wall of the flange plate (51), and a sealing ring (511) which is in inserting fit with the inserting ring groove (512) is fixed on the side wall of the flange plate (51); the adjacent flange plates (51) are clamped and fixed by the clamping part (52).

3. A high precision high injection quantity two-stage injection molding machine injection apparatus according to claim 2, characterized in that: and an elastic layer (513) is arranged on the side wall of the flange plate (51), and the elastic layer (513) covers the inner wall of the splicing ring groove (512).

4. A high precision high injection quantity two-stage injection molding machine injection apparatus according to claim 3, characterized in that: the clamping part (52) comprises a sealing ring sleeve (521) sleeved on the adjacent flange plate (51), a pressing plate (522) rotatably installed on the sealing ring sleeve (521), a fastening bolt (523) arranged on the adjacent flange plate (51) in a penetrating way, and a fastening nut (524) sleeved on the end part of the fastening bolt (523) and in threaded connection with the fastening bolt (523); the end of the fastening bolt (523) penetrates through the pressing plate (522) and the sealing ring sleeve (521), and the fastening nut (524) is arranged on one side, away from the pressing plate (522), of the sealing ring sleeve (521).

5. The injection unit of a high precision high injection quantity two-stage injection molding machine according to claim 4, characterized in that: an elastic sealing layer (5211) is fixedly arranged on the inner wall, perpendicular to the side wall of the flange (51), of the sealing ring sleeve (521), and the elastic sealing layer (5211) is tightly abutted to the edges of the two flanges (51) in the sealing ring sleeve (521).