CN217293364U - Charging barrel mechanism with pressure relief protection - Google Patents
Charging barrel mechanism with pressure relief protection Download PDFInfo
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- CN217293364U CN217293364U CN202220165854.5U CN202220165854U CN217293364U CN 217293364 U CN217293364 U CN 217293364U CN 202220165854 U CN202220165854 U CN 202220165854U CN 217293364 U CN217293364 U CN 217293364U
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- charging barrel
- cartridge
- precursor
- pressure
- pressure relief
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Abstract
The utility model provides a charging barrel mechanism with pressure relief protection, which is provided with a charging barrel precursor arranged at the front end of the charging barrel through a fixing screw, wherein the surface of the charging barrel facing the charging barrel precursor comprises a first sealing surface positioned at the inner side and a first connecting surface positioned at the outer side, the surface of the charging barrel precursor facing the charging barrel comprises a second sealing surface positioned at the inner side and used for being connected with the first sealing surface, and a second connecting surface positioned at the outer side and used for being connected with the first connecting surface of the charging barrel through the fixing screw, a concave part is arranged between the second sealing surface and the second connecting surface, the position of the concave part is opposite to the outer side part of the first sealing surface, a pressure relief hole penetrating through the charging barrel precursor is also arranged at the concave part, when the charging barrel and the charging barrel precursor are sealed and fail under high pressure, high-pressure melt is discharged from the pressure relief hole along a gap generated by the sealing failure, thereby reducing the pressure in the charging barrel and the pulling force borne by the fixing screw, the fixing screw is guaranteed not to be broken, and therefore pressure relief protection is provided for the whole charging barrel mechanism.
Description
Technical Field
The utility model belongs to the technical field of mould plastics, concretely relates to take feed cylinder mechanism of pressure release protection.
Background
The plasticizing component of the injection molding machine is a core component of the machine, and usually, during the injection and pressure maintaining processes, the high-pressure melt generates very large pressure (generally 1500-. As shown in fig. 3, the conventional plasticizing unit is composed of a nozzle 11, a barrel precursor 12, a fixing screw 13, a gluing assembly 14, a barrel 15 and a screw 16, wherein the barrel 15 and the barrel precursor 12 are connected by the fixing screw 13, a very large tensile stress is generated on the fixing screw 13 during the injection of the screw 16, especially during the ultrahigh-speed high-pressure injection process, the phenomenon of fatigue fracture of the fixing screw often occurs due to the impact load, and more seriously, the screw threads inside the barrel may be damaged, so that the barrel needs to be repaired and replaced.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, a take pressure release protection's feed cylinder mechanism is provided, the utility model discloses a following technical scheme:
the utility model provides a take pressure release protection's feed cylinder mechanism for the high-pressure fuse-element that forms after the sizing material plastify in the feed cylinder is injected to the mould in, a serial communication port, include: the charging barrel front body is connected with the charging barrel through a fixing screw and arranged at the front end of the charging barrel; and the nozzle is arranged at the front end of the barrel precursor, wherein the surface of the barrel facing the barrel precursor comprises a first sealing surface positioned on the inner side and a first connecting surface positioned on the outer side, the surface of the barrel precursor facing the barrel comprises a second sealing surface positioned on the inner side and used for being connected with the first sealing surface and a second connecting surface positioned on the outer side and used for being connected with the first connecting surface of the barrel through a fixing screw, a concave part is arranged between the second sealing surface and the second connecting surface, the position of the concave part is opposite to the outer side part of the first sealing surface, and a pressure relief hole penetrating through the barrel precursor is further arranged at the concave part.
The utility model provides a take pressure release protection's feed cylinder mechanism in, can also have such technical feature, wherein, the depressed part is the annular, around the central axis evenly distributed of feed cylinder precursor.
The present invention provides a cartridge mechanism with pressure relief protection, which can further have a technical feature that a pressure relief hole penetrates from a recessed portion to a front end surface of a cartridge precursor.
The utility model provides an among the feed cylinder mechanism of area pressure release protection, can also have such technical characteristics, wherein, the quantity in pressure release hole is two at least.
Utility model with the functions and effects
According to the utility model discloses a take pressure release protection's feed cylinder mechanism, this feed cylinder mechanism's feed cylinder precursor passes through set screw with the feed cylinder and is connected, the utility model discloses sealed face of second in the feed cylinder precursor and second have set up the depressed part relative with the first sealed face outside part of feed cylinder between being connected the face, and still have a plurality of pressure release holes that run through to the front end surface of feed cylinder precursor on this depressed part, the high pressure that produces makes feed cylinder and feed cylinder precursor sealed inefficacy in the feed cylinder, and when set screw warp, the inside high-pressure fuse-element of feed cylinder is discharged by the pressure release hole along the clearance that sealed inefficacy produced, thereby reduce feed cylinder internal pressure and set screw because of the pulling force that the high pressure receives, guarantee that set screw can not fracture, thereby provide the pressure release protection for whole feed cylinder mechanism.
Drawings
FIG. 1 is a schematic structural diagram of a cartridge mechanism with pressure relief protection in an embodiment of the present invention;
fig. 2 is a schematic structural view of a cartridge precursor in an embodiment of the invention;
fig. 3 is a schematic structural view of a conventional plasticizing unit.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and efficiency are easily understood and known, it is right to combine embodiment and attached drawing below the utility model discloses a take feed cylinder mechanism of pressure release protection does specifically describe.
< example >
Fig. 1 is a schematic structural diagram of a cartridge mechanism with pressure relief protection in an embodiment of the present invention.
As shown in fig. 1, the cartridge mechanism 100 with pressure relief protection includes a cartridge 1, a cartridge precursor 2, a set screw 3, a nozzle 4, a nozzle connecting body 5, a screw 6, and a gluing assembly 7. The charging barrel mechanism 100 with pressure relief protection is used for injecting high-pressure melt formed after plasticizing rubber materials in a charging barrel 1 into a mold through a nozzle 4.
The barrel 1 is used for placing the size and the high-pressure melt formed from the size.
The cartridge front body 2 is connected to the cartridge 1 by a fixing screw 3 and is disposed at the front end of the cartridge 1.
In this embodiment, the side of the cartridge 1 facing the cartridge precursor 2 comprises a first sealing surface on the inside and a first connection surface on the outside. The side of the cartridge front body 2 facing the cartridge 1 comprises a second sealing surface on the inside for contacting the first sealing surface and a second connection surface on the outside for connecting to the first connection surface of the cartridge 1 by means of a fixing screw 3.
Fig. 2 is a schematic structural view of a cartridge precursor in an embodiment of the invention.
As shown in fig. 2, a recess 21 is provided between the second sealing surface and the second connection surface of the cartridge front body 2, and the recess 21 is located opposite to the outer side portion of the first sealing surface of the cartridge 1. The depressions are annular and evenly distributed around the central axis of the cartridge precursor 2.
Further, the recess 21 is provided with a plurality of pressure release holes 22 penetrating from the recess 21 to the front end surface of the cartridge front body 2. The depression 21 and the pressure relief hole 22 provide pressure relief protection when the cartridge mechanism generates internal high pressure due to operation or generates high pressure due to the blockage of the nozzle 4.
A nozzle 4 is provided at the front end of the barrel precursor 2 through a nozzle connecting body 5, so that the high-pressure melt is injected into the mold through the nozzle 4.
The screw 6 is used for shearing, plasticizing and injecting the rubber compound in the barrel 1 and is arranged inside the barrel 1. The screw 6 performs both rotary and linear reciprocating motions inside the barrel part. Specifically, the method comprises the following steps:
when the screw 6 plastifies the glue material in the charging barrel 1, the screw rotates and retreats at the same time, and the glue material is plasticized into a high-pressure melt by utilizing the shearing of the screw and the external heating of the charging barrel 1; the screw 6 is linearly reciprocated as it injects and releases the high-pressure melt in the barrel 1.
The gluing component 7 is in threaded connection with the screw 6 and is used for preventing the high-pressure melt accumulated at the head of the screw 6 in the charging barrel 1 from flowing backwards.
The utility model discloses a feed cylinder 100 of taking pressure release protection's in the embodiment use method as follows:
first, the screw 6 rotates and retreats in the cylinder 1 to plasticize the rubber compound and form a high-pressure melt. Then the screw rod 6 makes a linear reciprocating motion in the cylinder 1 to inject high-pressure melt, when the high pressure is generated in the cylinder 1 and the cylinder precursor 2 due to ultrahigh-speed injection or blockage of the nozzle 4, the fixing screw 3 is deformed, so that the first sealing surface of the cylinder 1 and the second sealing surface of the cylinder precursor 2 are sealed and failed to generate a gap. At this moment, the high-pressure melt is discharged from the pressure relief hole 22 through the recessed part 21 along the gap between the first sealing surface and the second sealing surface, so that the pressure in the charging barrel mechanism is rapidly reduced, and meanwhile, the tension borne by the fixing screw 3 is also reduced, thereby ensuring that the tension is within a safety range and the fixing screw 3 cannot be broken.
In addition, if leakage from the pressure relief hole 22 occurs frequently, it is said that the first sealing surface of the cartridge 1 and the second sealing surface of the cartridge front body 2 are not sealed, and the fixing screw 3 is damaged to some extent, so that replacement can be checked in time to ensure that no further loss occurs.
Effects and effects of the embodiments
According to the cartridge mechanism with pressure release protection provided by the present embodiment, since the recessed portion 21 is provided between the second sealing surface and the second connecting surface of the cartridge front body 2 so as to oppose the outer side portion of the first sealing surface of the cartridge 1, and the plurality of pressure release holes 22 penetrating to the front end surface of the cartridge front body 2 are further provided in the recessed portion 21, pressure release protection is provided for the cartridge mechanism. When the high pressure generated in the charging barrel 1 makes the sealing failure of the charging barrel and the charging barrel precursor, and the fixing screw 3 deforms, the high-pressure melt in the charging barrel is discharged from the pressure relief hole 22 along the gap generated by the sealing failure through the concave part 21, so that the internal pressure of the charging barrel and the tension borne by the fixing screw 3 due to the high pressure are reduced, the fixing screw 3 is ensured not to be broken, and the pressure relief protection is provided for the whole charging barrel mechanism.
In the embodiment, because the high-pressure melt leaks from the pressure relief hole 22 only when the first sealing surface of the cylinder 1 and the second sealing surface of the cylinder precursor 2 are in sealing failure, when the pressure relief hole 22 still leaks when not working, the sealing failure of the cylinder 1 and the cylinder precursor 2 is indicated, and the fixing screw 3 is damaged to a certain extent, so that a worker can be reminded to check or replace the cylinder mechanism in time to ensure that no operation loss occurs to a greater extent.
The above embodiments are merely illustrative of specific embodiments of the present invention, and the present invention is not limited to the description of the above embodiments.
Claims (4)
1. The utility model provides a take feed cylinder mechanism of pressure release protection for in injecting the mould with the high-pressure melt that forms behind the sizing material plastify in the feed cylinder, its characterized in that includes:
the charging barrel precursor is connected with the charging barrel through a fixing screw and arranged at the front end of the charging barrel; and
a nozzle arranged at the front end of the barrel precursor,
wherein the face of the cartridge facing the cartridge precursor comprises a first sealing face on the inside and a first connection face on the outside,
the side of the cartridge front body facing the cartridge comprises a second sealing surface on the inside for contacting the first sealing surface, a second connection surface on the outside for connecting to the first connection surface of the cartridge by means of the fastening screw,
a concave part is arranged between the second sealing surface and the second connecting surface and is opposite to the outer part of the first sealing surface,
the depressed part department still is equipped with and runs through the pressure release hole of feed cylinder precursor.
2. A cartridge mechanism with pressure relief protection as claimed in claim 1, wherein:
wherein the depressions are annular and evenly distributed about the central axis of the cartridge precursor.
3. A cartridge mechanism with pressure relief protection as claimed in claim 1, wherein:
wherein the pressure relief hole penetrates from the recess to a front end surface of the cartridge precursor.
4. A cartridge mechanism with pressure relief protection as claimed in claim 1, wherein:
wherein, the quantity of pressure release hole is two at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220165854.5U CN217293364U (en) | 2022-01-21 | 2022-01-21 | Charging barrel mechanism with pressure relief protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220165854.5U CN217293364U (en) | 2022-01-21 | 2022-01-21 | Charging barrel mechanism with pressure relief protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217293364U true CN217293364U (en) | 2022-08-26 |
Family
ID=82926171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220165854.5U Active CN217293364U (en) | 2022-01-21 | 2022-01-21 | Charging barrel mechanism with pressure relief protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217293364U (en) |
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2022
- 2022-01-21 CN CN202220165854.5U patent/CN217293364U/en active Active
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