CN212194091U - Double-section injection molding oil cylinder - Google Patents
Double-section injection molding oil cylinder Download PDFInfo
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- CN212194091U CN212194091U CN201922454737.1U CN201922454737U CN212194091U CN 212194091 U CN212194091 U CN 212194091U CN 201922454737 U CN201922454737 U CN 201922454737U CN 212194091 U CN212194091 U CN 212194091U
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Abstract
The utility model relates to a double-section injection molding oil cylinder, which comprises a pressing working oil cylinder section, an injection working oil cylinder section and a plastic injection section; a pressing oil cylinder is arranged in the pressing working oil cylinder section; the bottom of the pressing oil cylinder is connected with an injection working oil cylinder section; an injection oil cylinder is arranged in the injection working oil cylinder section, and an injection oil cylinder body of the injection oil cylinder is fixedly connected with the pressing working oil cylinder section; the plastic injection section comprises a plastic storage cylinder body; a plastic ejection piston capable of moving up and down is arranged in the plastic storage cylinder body and is connected with the bottom of the piston rod of the injection oil cylinder; the plastic storage cavity is formed in the plastic storage cylinder body and is positioned at the lower part of the plastic ejection piston; and the lower part of the plastic storage cylinder body is provided with an injection nozzle section, and the injection nozzle section is communicated with the plastic storage cavity. The utility model discloses a hydro-cylinder segmentation sets up, convenient maintenance, and improved the reliability.
Description
Technical Field
The utility model relates to an hydro-cylinder of moulding plastics has and aims at the mouth of moulding plastics and pushes away the material two-section hydro-cylinder of moulding plastics.
Background
An injection molding machine is a main molding device for manufacturing various plastic parts from thermoplastic plastics or thermosetting plastics, and is a plastic molding device integrating mechanical, electrical and hydraulic functions. With the development of modern industry and advanced science and technology, plastic parts are increasingly widely applied to various fields of national defense industry, machinery, electrical, aviation, transportation, construction, agriculture, culture and education, sanitation and human life. Injection molding is one of the main molding methods for plastic products, and is to inject the molten thermoplastic or thermosetting plastic in the injection cylinder into the closed molding mold cavity at high pressure and high speed by using an injection device, and then to cool, solidify and mold the plastic product to make the shape of the mold cavity almost completely consistent.
In the injection molding process, an injection molding oil cylinder is often needed; the development of the injection oil cylinder is in development along with the development of an injection technology, for example, the structural design of a piston rod injection oil cylinder is given by a double-output-shaft energy-saving injection oil cylinder of an injection molding machine with Chinese patent publication No. CN 2463162Y; furthermore, as the structure of the injection oil cylinder of the injection molding machine disclosed in Chinese patent No. CN106217792A, the injection oil cylinder and the loosening oil cylinder which are matched with each other are arranged, so that the injection and the loosening action of the screw of the injection molding machine can be independently realized; the hydraulic control system can provide selection of two modes of low injection speed, high pressure, high injection speed and low pressure, and provides strong technical support for plastic products requiring different technological parameter requirements by utilizing accurate control of a hydraulic oil way.
However, when the injection molding oil cylinder is applied to large-tonnage and large-size injection molding, various inconveniences exist, such as too small pressure, incapability of moving the oil cylinder body, and inconvenience for butt injection molding of an injection molding opening, so that the structure of the injection molding oil cylinder needs to be further improved to meet the requirements of large-tonnage and large-size injection molding machines.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two section hydro-cylinders of moulding plastics to satisfy the operation requirement of jumbo size injection molding machine.
In order to achieve the above object, the utility model provides a two-section injection molding oil cylinder, its characterized in that: comprises a pressing working oil cylinder section, an injection working oil cylinder section and a plastic injection section, wherein the plastic injection section also comprises an injection nozzle section;
a pressing oil cylinder is arranged in the pressing working oil cylinder section; the top of the compression oil cylinder is arranged on the equipment frame; the bottom of the pressing oil cylinder is connected with an injection working oil cylinder section;
an injection oil cylinder is arranged in the injection working oil cylinder section, and an injection oil cylinder body of the injection oil cylinder is fixedly connected with the pressing working oil cylinder section; an injection oil cylinder piston rod is arranged in the injection oil cylinder body, the injection oil cylinder piston rod is arranged downwards, and the bottom of the injection oil cylinder piston rod, which extends out of the injection oil cylinder body, is connected with a plastic injection section;
the plastic injection section comprises a plastic storage cylinder body; a plastic ejection piston capable of moving up and down is arranged in the plastic storage cylinder body and is connected with the bottom of the piston rod of the injection oil cylinder; the plastic storage cavity is formed in the plastic storage cylinder body and is positioned at the lower part of the plastic ejection piston; and the lower part of the plastic storage cylinder body is provided with an injection nozzle section, and the injection nozzle section is communicated with the plastic storage cavity.
As a further improvement of the utility model, a cooling section is arranged between the plastic injection section and the injection oil cylinder body; the cooling section is provided with a refrigerant inlet and outlet pipeline which is connected with an external refrigerant system.
As a further improvement of the present invention, the injection nozzle section includes that an injection nozzle plate is installed at the lower part of the plastic storage cylinder body, an injection runner is arranged in the middle of the injection nozzle plate, an injection nozzle is installed at the lower part of the injection runner, a thimble cavity is arranged in the middle of the injection nozzle, an injection port is arranged at the bottom of the thimble cavity, and the section diameter of the injection port is smaller than that of the thimble cavity; an injection molding thimble is arranged in a hollow channel in the injection nozzle, a locking spring is arranged in the injection molding thimble positioned in the thimble cavity, and the locking spring generates elasticity to press a lower plug of the injection molding thimble on the top of the injection port; the bottom of the injection molding thimble is provided with a firing pin, the diameter of the firing pin is smaller than the diameter of the section of the injection port, and the firing pin is sleeved in the injection port.
Further, the plastic liquid in the plastic storage cavity is added through a feed inlet in the injection nozzle plate; the top of the injection nozzle plate is provided with a discharge hole which is communicated with the plastic storage chamber; the discharge gate is the annular mouth, installs the sealed pad that can fluctuate in it, sealed pad plays the effect of charge door check valve.
The double-section injection molding oil cylinder of the utility model adopts the double-oil cylinder series arrangement, thereby realizing that the compression oil cylinder extends out independently, inserting the injection nozzle into the mold, realizing high-efficiency and quantitative injection molding through the injection oil cylinder, and improving the production efficiency; compared with the prior art, the utility model still have following advantage:
(1) the oil cylinders are arranged in sections, so that the maintenance is convenient;
(2) the independent plastic storage chamber is adopted and isolated by the cooling section, so that the reliability is improved;
(3) the double-section injection molding oil cylinder is long and thin in overall structure, is convenient to be installed on an injection molding machine in parallel, and improves injection molding capacity.
Drawings
FIG. 1 is a schematic diagram 1 of the overall structure of a four-column hydraulic injection molding machine;
FIG. 2 is a schematic diagram of the overall structure of a four-column hydraulic injection molding machine 2;
FIG. 3 is a schematic view of the lower mold lifting system in use 1;
FIG. 4 is a schematic view of the lower mold lifting system in use 2;
FIG. 5 is a schematic view of the lower mold lifting system in use 3;
FIG. 6 is a schematic diagram of an injection molding system;
FIG. 7 is a schematic view of the overall structure of the injection cylinder of the present invention;
fig. 8 is a schematic structural view of the pressing operation cylinder section of the present invention;
FIG. 9 is a schematic structural view of the injection cylinder section of the present invention;
FIG. 10 is a schematic structural view of the plastic injection section of the present invention;
FIG. 11 is a schematic structural view of an injection nozzle segment according to the present invention;
reference numerals: a lower mold system 1; a base 11, a base upright sleeve 12; a lower lifting die platform 13 and a lower lifting die guide sleeve 14;
an upper mold system 2; fixing an upper die platform 21, an upper die column sleeve 22 and an upper die locking nut 23; the injection molding oil cylinder platform 24, the injection molding oil cylinder platform upright post sleeve 25 and the injection molding oil cylinder platform locking nut 26;
a column system 3; a guide rod 31, a lifting screw 32, a column locking nut 33;
a lower mold lifting system 4; a hydraulic lift cylinder 41; a main lift cylinder 42, a swing arm 43, a support arm 44;
an injection molding system 5; a bracket 51;
the injection molding oil cylinder 6 comprises a pressing working oil cylinder section 61, an injection working oil cylinder section 62, a plastic injection section 63 and an injection nozzle section 64;
a compaction oil cylinder body 6101, a compaction oil cylinder piston rod 6102, an injection oil cylinder hinge 6103, and an injection oil cylinder pin 6104;
an injection cylinder body 6201, an injection cylinder piston rod 6202, a cooling section 6203, and a refrigerant inlet and outlet pipeline 6204;
a plastic storage cylinder 6301, a plastic ejection piston 6302, a plastic storage chamber 6303;
an injection molding flow channel 6401, a thimble cavity 6402, an injection port 6403, an injection molding thimble 6404, a locking spring 6405, a discharge port 6406, a sealing gasket 6407 and a feed port 6308.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
For fully explaining the utility model discloses the improvement innovation of two sections hydro-cylinders of moulding plastics, combine its condition of using at hydraulic pressure injection molding machine below, explain in the lump.
As shown in fig. 1 and 2, the four-column hydraulic injection molding machine is a schematic overall structure diagram, and mainly comprises a lower mold system 1 and an upper mold system 2, which are vertically connected through a column system 3; the upright post system 3 comprises 4 upright posts which are respectively positioned at four corners of the lower die system 1 and the upper die system 2; the lower die system 1 is driven to lift through hydraulic pressure; therefore, the utility model is called a four-column hydraulic injection molding machine.
The lower die system 1 comprises a base 11 and a lower lifting die platform 13 which are connected through a lower die lifting system 4; the base 11 is used as an equipment base and is fixed on the ground; four corners of the base 11 are provided with base upright post sleeves 12, and the bottoms of 4 upright posts of the upright post system 3 are fixed in the base upright post sleeves 12 through upright post locking nuts 33.
The lower part of 4 stands, be located in lower mould system 1, and surpass the position of base stand cover 12 is guide bar 31, guide bar 31 is the smooth cylindrical guide bar of outer wall.
The guide rod 31 is sleeved with the lower lifting die platform 13, four corners of the lower lifting die platform 13 are provided with lower die lifting guide sleeves 14, and the lower die lifting guide sleeves 14 are linear bearings; the lower mold lifting guide sleeve 14 is matched with the guide rod 31, so that the lower lifting mold platform 13 can stably move up and down along the guide rod 31 under the driving of the lower mold lifting system 4.
The upper part of 4 said stands, that is to say the part located in said upper mould system 2, is a lifting screw 32, the outer wall of said lifting screw 32 is a continuous thread.
The upper die system 2 is fixed on the 4 lifting screws 32 at the lifting and moving positions; the upper die system 2 comprises a fixed upper die platform 21, upper die column sleeves 22 are arranged at four corners of the fixed upper die platform 21, and the upper die column sleeves 22 are sleeved on the lifting screw 32; the lifting screw rod 32 is characterized in that an upper die locking nut 23 is further arranged, the upper die locking nut 23 is matched with the upper die column sleeve 22, and the upper die column sleeve 22 can be locked and fixed at a specific position of the lifting screw rod 32 through the upper die locking nut 23.
An injection molding system 5 is arranged at the upper part of the fixed upper mold platform 21, the injection molding system 5 is provided with a plurality of sets of injection molding oil cylinders, the injection molding oil cylinders are fixed at the upper part of the fixed upper mold platform 21 through injection molding oil cylinder platforms 24, four corners of the injection molding oil cylinder platforms 24 are also provided with injection molding oil cylinder platform upright sleeves 25, and the injection molding oil cylinder platform upright sleeves 25 are sleeved on the lifting screw rods 32; an injection molding oil cylinder platform locking nut 26 is further arranged, the injection molding oil cylinder platform column sleeve 25 can be locked and fixed at a specific position of the lifting screw 32 through the injection molding oil cylinder platform locking nut 26, and the injection molding oil cylinder platform 24 and the fixed upper die platform 21 are ensured to be kept consistent in distance.
The lifting lower die platform 13 is provided with a die mounting groove on the working surface of the fixed upper die platform 21, and is used for fixing an injection die, the thickness of the injection die is limited by the different sizes of plastic parts, and the distance between the lifting lower die platform 13 and the fixed upper die platform 21 can be adjusted along with the thickness of the injection die, namely, the distance between the lifting lower die platform 21 and the fixed upper die platform 13 is adjusted through adjusting the upper die column sleeve 22 and the upper die locking nut 23, so that the distance between the fixed upper die platform 21 and the lifting lower die platform 13 is adjusted to adapt to the different thickness sizes of the injection die.
As shown in fig. 3 to 5, the using state of the lower mold lifting system 4 is schematically illustrated; wherein fig. 3 is a schematic view of a fully lowered state of the lower mold lifting system 4, fig. 4 is a schematic view of an intermediate state of the lower mold lifting system 4, and fig. 5 is a schematic view of a fully raised state of the lower mold lifting system 4; the lower mold lifting system 4 comprises 2 parts of lifting driving devices.
The lifting driving device of the first part is that a plurality of quick lifting hydraulic cylinders 41 are arranged on the base 11, the tops of piston rods of the quick lifting hydraulic cylinders 41 are connected with the lower lifting mold platform 13, in the drawing of the embodiment, the number of the quick lifting hydraulic cylinders 41 is 4, and the quick lifting hydraulic cylinders are respectively positioned on two sides of the outer edge of the base 11; the lifting lower die platform 13 can be directly driven to lift through the quick lifting hydraulic cylinder 41, and lifting movement is directly output by the lifting hydraulic cylinder 41, so that the movement speed is high.
The second part of the lifting driving device is that a plurality of rocker mechanisms are arranged on the base 11, the rocker mechanisms are driven by a main lifting hydraulic cylinder 42, and each rocker mechanism comprises a swing arm 43 and a supporting arm 44; the bottom of the swing arm 43 is hinged on the base 11, the top of the swing arm 43 is hinged with the supporting arm 44, and the top of the supporting arm 44 is hinged on the bottom of the lower lifting die platform 13; the top end of the piston rod of the main lifting hydraulic cylinder 42 is hinged to the rocker arm mechanism, and as shown in the drawing of the embodiment, the top end of the piston rod of the main lifting hydraulic cylinder 42 is hinged to the swing arm 43, and the hinge point is close to the hinge connection point of the swing arm 43 and the support arm 44; the oil cylinder body of the main lifting hydraulic cylinder 42 is hinged on the base 11. Under the driving of the main lifting hydraulic cylinder 42, the included angle and the relative position between the swing arm 43 and the supporting arm 44 are changed, so as to change the distance between the base 11 and the lower lifting mold platform 13. When the lifting lower die platform 13 needs to be lifted to the top to realize the mode locking, the piston rod of the main lifting hydraulic cylinder 42 extends out to push the supporting arm 44 to lift upwards until the hinge point 1 of the supporting arm 44 and the lifting lower die platform 13 is fixed, the connecting hinge point 2 of the supporting arm 44 and the swing arm 43, the hinge point 3 of the swing arm 43 fixed with the base 11, 3 hinge points form a straight line, and be in vertical state, when the reverse impact force of mould was downward this moment, support arm 44 with swing arm 43 is in the dead point position, and the impact force is through 3 pin joints downward transmission in proper order, directly transmits at last on base 11, can not be right main hydraulic cylinder 42 that rises produces extra component, has improved the clamping force greatly, so the utility model discloses a four post hydraulic injection molding machine can reach 1000 tons of level matched molds pressure.
As shown in fig. 6, which is a schematic structural diagram of the injection molding system 5, a plurality of brackets 51 are fixed on the injection molding cylinder platform 24, an injection molding cylinder 6 is installed in each bracket 51, and the injection molding cylinder 6 is a two-section injection molding cylinder.
The utility model discloses the protection promptly be the concrete institutional advancement of hydro-cylinder 6 moulds plastics.
As shown in fig. 7, which is a schematic view of the overall structure of the injection cylinder 6 of the present invention, fig. 8 to 11 are schematic views of partial enlargements of the parts; the utility model discloses an injection molding oil cylinder 6 is including compressing tightly working cylinder section 61, injection working cylinder section 62, and plastic injection section 63, and wherein plastic injection section 63 includes injection nozzle section 64 again.
As shown in fig. 8, a partial enlarged view of the pressing cylinder section 61 is provided, and the main body of the pressing cylinder section is a hydraulic cylinder, which is referred to as a pressing cylinder in the present invention, the pressing cylinder body 6101 is vertically fixed at the top end of the injection cylinder section 62, and the pressing cylinder piston 6102 is output upwards; the top end of the piston rod 6102 of the hold-down cylinder is connected with an injection cylinder hinge 6103, which is hinged and fixed in the bracket 51 through an injection cylinder pin 6104; by arranging the injection cylinder hinge joint 6103 and the injection cylinder pin 6104, the injection cylinder 6 can swing to a certain extent during use, thereby making up for the position deviation of an injection port caused by the installation and fixation of a mold. In this embodiment, for reliable fixation, the hold-down cylinder is flipped, and in part of the design, the hold-down cylinder 6101 may be fixed in the bracket 51 through the injection cylinder hinge 6103, and the output end of the hold-down cylinder piston 6102 is fixed with the injection working cylinder section 62.
As shown in fig. 9, which is a partial enlarged view of the injection working cylinder section 62, the main body of the injection working cylinder section 62 is an injection cylinder with a long stroke, an injection cylinder body 6201 of the injection cylinder is fixedly connected with the pressing working cylinder section 61, an injection cylinder piston rod 6202 is arranged in the injection cylinder, the injection cylinder piston rod 6202 is arranged downwards, and the bottom of the injection cylinder body 6201 extending out of the injection cylinder is connected with a plastic injection section 63; a cooling section 6203 is arranged between the plastic injection section 63 and the injection oil cylinder body 6201; because the plastic injection section 63 stores the plastic liquid in a high-temperature melting state, in order to prevent the heat of the plastic liquid from being transferred into the injection cylinder 6201, which may cause the temperature of hydraulic oil to be too high and cause a failure, the cooling section 6203 needs to be provided, and the cooling section 6203 is provided with a coolant inlet and outlet pipeline 6204 connected to an external coolant system, thereby isolating the heat exchange between the plastic injection section 63 and the injection cylinder 6201.
As shown in fig. 10, a partial enlarged view of the plastic injection section 63 is shown, which includes a plastic storage cylinder 6301, in which a plastic ejection piston 6302 capable of moving up and down is disposed, and the plastic ejection piston 6302 is connected to the bottom of the injection cylinder piston rod 6202; the plastic storage cylinder 6301 located below the plastic ejection piston 6302 is a plastic storage chamber 6303 filled with a plastic solution in a high-temperature molten state; an injection nozzle section 64 is arranged at the lower part of the plastic storage cylinder 6301, and the injection nozzle section 64 is communicated with the plastic storage chamber 6303.
As shown in fig. 11, which is a partial enlarged view of an injection nozzle section 64, an injection nozzle plate is installed at the lower part of the plastic storage cylinder 6301, an injection flow passage 6401 is installed in the middle of the injection flow passage 6401, an injection nozzle is installed at the lower part of the injection flow passage 6401, a thimble cavity 6402 is formed in the middle of the injection nozzle, an injection port 6403 is formed at the bottom of the thimble cavity 6402, and the cross-sectional diameter of the injection port 6403 is smaller than that of the thimble cavity 6402; an injection molding thimble 6404 is arranged in a hollow channel in the injection nozzle, a locking spring 6405 is arranged in the injection molding thimble 6404 positioned in the thimble cavity 6402, and the locking spring 6405 generates elasticity to press a lower plug of the injection molding thimble 6404 on the top of the injection nozzle 6403; a firing pin is arranged at the bottom of the injection molding thimble 6404, the diameter of the firing pin is smaller than the diameter of the section of the injection port 6403, the firing pin is sleeved in the injection port 6403, the length of the firing pin is larger than that of the injection port 6403, and the bottom of the firing pin protrudes out of the bottom of the injection port 6403 in an bouncing state of the locking spring 6405; when injection molding is needed, the compression oil cylinder is started, so that a piston rod 6102 of the compression oil cylinder extends upwards, the compression oil cylinder body 6101, the injection working oil cylinder section 62 and the plastic injection section 63 are driven to move downwards, when the injection nozzle is jacked into a mold injection hole, the firing pin is jacked and displaces relative to the injection port 6403, and a lower plug of the injection thimble 6404 also displaces relative to the injection port 6403, so that the injection port 6403 is communicated with the needle cavity 6402 and the injection runner 6401, and is finally communicated with the plastic storage cavity 6303; and then starting the injection oil cylinder to realize injection molding.
Further, the plastic liquid in the plastic storage chamber 6303 is added through a feed port 6308 in the injection nozzle plate; the top of the injection nozzle plate is provided with a discharge hole 6406 which is communicated with the plastic storage chamber 6303; the discharge port 6406 is an annular port, and a sealing gasket 6407 capable of floating up and down is arranged in the discharge port; when the materials are added through the feed opening 6308, the sealing gasket 6407 is pushed upwards by the thrust of the materials, so that the feed opening 6308 is communicated with the discharge opening 6406, and the inflow of the materials is realized; when injection molding is performed, the sealing gasket 6407 is pushed downwards by the thrust of the material, so that the feed opening 6308 is closed, and the material is prevented from reversely overflowing from the feed opening 6308.
When the four-column hydraulic injection molding machine works, a corresponding injection mold is firstly installed, wherein the upper injection mold is fixed on the fixed upper mold platform 21, and the lower injection mold is fixed on the lifting lower mold platform 13; adjusting the positions of the fixed upper die platform 21 and the injection oil cylinder platform 24, and locking the upper die locking nut 23 and the injection oil cylinder platform locking nut 26; the preparation work before the start is completed.
Starting injection molding operation, wherein the quick lifting hydraulic cylinder 41 is lifted, so that the lower lifting die platform 13 drives the lower injection die to quickly lift and approach the upper injection die, and in the process, the rocker mechanism moves along with opening; then the piston rod of the main lifting hydraulic cylinder 42 is completely extended out, and the rocker arm mechanism is completely straightened, so that the lower lifting die platform 13 is completely lifted, and die assembly is completed.
Then, a plurality of sets of the injection cylinders 6 are started simultaneously or sequentially, and at first, the hold-down cylinder is started to enable a piston rod 6102 of the hold-down cylinder to extend upwards, so as to drive the hold-down cylinder 6101, the injection working cylinder section 62 and the plastic injection section 63 to move downwards, so that the injection nozzle is jacked into the injection hole of the mold and compressed, and the injection port 6403 is opened; and finally, starting the injection oil cylinder to start to inject the plastic cement liquid into the mold.
After the injection molding is finished, the plastic solution can reversely work after being cooled and condensed, and the mold opening and the demolding are carried out to obtain the plastic product.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, and such equivalents and substitutions are intended to be included within the scope of the invention as defined by the appended claims.
Claims (4)
1. Two sections hydro-cylinders of moulding plastics, its characterized in that: comprises a pressing working oil cylinder section, an injection working oil cylinder section and a plastic injection section, wherein the plastic injection section also comprises an injection nozzle section;
a pressing oil cylinder is arranged in the pressing working oil cylinder section; the top of the compression oil cylinder is provided with an injection oil cylinder hinged joint, and the injection oil cylinder hinged joint is hinged and fixed on the equipment frame through an injection oil cylinder pin shaft; the bottom of the pressing oil cylinder is connected with an injection working oil cylinder section;
an injection oil cylinder is arranged in the injection working oil cylinder section, and an injection oil cylinder body of the injection oil cylinder is fixedly connected with the pressing working oil cylinder section; an injection oil cylinder piston rod is arranged in the injection oil cylinder body, the injection oil cylinder piston rod is arranged downwards, and the bottom of the injection oil cylinder piston rod, which extends out of the injection oil cylinder body, is connected with a plastic injection section;
the plastic injection section comprises a plastic storage cylinder body; a plastic ejection piston capable of moving up and down is arranged in the plastic storage cylinder body and is connected with the bottom of the piston rod of the injection oil cylinder; the plastic storage cavity is formed in the plastic storage cylinder body and is positioned at the lower part of the plastic ejection piston; and the lower part of the plastic storage cylinder body is provided with an injection nozzle section, and the injection nozzle section is communicated with the plastic storage cavity.
2. The two-section injection molding cylinder according to claim 1, characterized in that: a cooling section is arranged between the plastic injection section and the injection oil cylinder body; the cooling section is provided with a refrigerant inlet and outlet pipeline which is connected with an external refrigerant system.
3. The two-section injection molding cylinder according to claim 1, characterized in that: the injection nozzle section comprises an injection nozzle plate arranged at the lower part of the plastic storage cylinder body, an injection runner is arranged in the middle of the injection nozzle plate, an injection nozzle is arranged at the lower part of the injection runner, a thimble cavity is arranged in the middle of the injection nozzle, an injection port is arranged at the bottom of the thimble cavity, and the section diameter of the injection port is smaller than that of the thimble cavity; an injection molding thimble is arranged in a hollow channel in the injection nozzle, a locking spring is arranged in the injection molding thimble positioned in the thimble cavity, and the locking spring generates elasticity to press a lower plug of the injection molding thimble on the top of the injection port; the bottom of the injection molding thimble is provided with a firing pin, the diameter of the firing pin is smaller than the diameter of the section of the injection port, and the firing pin is sleeved in the injection port.
4. The two-section injection molding cylinder according to claim 3, characterized in that: the plastic liquid in the plastic storage cavity is added through a feed inlet in the injection nozzle plate; the top of the injection nozzle plate is provided with a discharge hole which is communicated with the plastic storage chamber; the discharge gate is the annular mouth, installs the sealed pad that can fluctuate in it, sealed pad plays the effect of charge door check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454737.1U CN212194091U (en) | 2019-12-31 | 2019-12-31 | Double-section injection molding oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922454737.1U CN212194091U (en) | 2019-12-31 | 2019-12-31 | Double-section injection molding oil cylinder |
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| CN212194091U true CN212194091U (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042383A (en) * | 2022-07-18 | 2022-09-13 | 南通市通州区三槐机械制造有限公司 | Automatic pipe discharging device of hose shoulder injection machine arranged in sequence |
-
2019
- 2019-12-31 CN CN201922454737.1U patent/CN212194091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115042383A (en) * | 2022-07-18 | 2022-09-13 | 南通市通州区三槐机械制造有限公司 | Automatic pipe discharging device of hose shoulder injection machine arranged in sequence |
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