CN209580320U - A kind of plunger type shut-off nozzles preventing fluid clamping - Google Patents
A kind of plunger type shut-off nozzles preventing fluid clamping Download PDFInfo
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- CN209580320U CN209580320U CN201822039238.1U CN201822039238U CN209580320U CN 209580320 U CN209580320 U CN 209580320U CN 201822039238 U CN201822039238 U CN 201822039238U CN 209580320 U CN209580320 U CN 209580320U
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- plunger
- injection molding
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- runner
- nozzles
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Abstract
The utility model discloses a kind of plunger type shut-off nozzles for preventing fluid clamping, including nozzle body, injection molding channel is provided in nozzle body, the plunger for blocking injection molding channel is provided on nozzle body, rotation is provided with jacking block on nozzle body, the driving element for driving jacking block to rotate is connected on jacking block, injection molding channel includes runner and runner after injection molding before being molded, plunger channel is provided between runner after being molded preceding runner and being molded, plunger is provided in plunger channel, plunger is identical as the glide direction that plunger is opened by melt by melt pressure direction.Melt pressure using this kind of plunger type shut-off nozzles in this kind of throttle nozzle is uniformly distributed on plunger end face, lateral pressure will not be generated, effectively reduce the frictional force between plunger and main body, so that plunger sliding is more smooth, plunger will not block when injection molding, effectively reduce parts depreciation, reduce melt leakage, increase service life, reduces maintenance time, make cost-effective reduction.
Description
Technical field
The utility model belongs to shut-off nozzles technical field, and specifically a kind of plunger type for preventing fluid clamping is shut off spray
Mouth.
Background technique
Application of the shut-off nozzles on injection molding machine is increasingly extensive, mainly includes needle valve and plunger type shut-off nozzles, nozzle
Opening and closing function driven by the modes such as hydraulic, pneumatic.
The widely used straight-through plunger type shut-off nozzles on injection molding machine, structure is usually as shown in Figure 1, include nozzle master
Body 1 is provided with injection molding channel 2 in nozzle body 1, the plunger 3 with 2 square crossing of injection molding channel, institute is provided on nozzle body 1
It states rotation on nozzle body 1 and is provided with jacking block 4, the driving element 5 for driving jacking block 4 to rotate, institute are connected on the jacking block 4
It states driving element 5 and is generally hydraulic cylinder or cylinder, push plunger 3 to block the injection molding channel 2 by the driving of driving element 5,
And when being molded, due to the presence of frictional resistance, the position for unclamping plunger is pivoted in jacking block 4, if this
When injection molding machine start to be molded, internal melt body pressure pushes plunger, since the pressure that melt body generates is uneven, plunger 3 is easily caused to block
Firmly, it cannot be operating normally.
Secondly, as shown in Fig. 2, due between plunger 3 and nozzle body 1 cylindrical surface be clearance fit, plunger 3 is located at close stance
When setting, due to pressure at both sides unevenness, reduce left side gap, right side gap increases, under the action of internal fluid pressure, plunger
Deviate center, gap as shown in Figure 3 occurs, raw material is slowly leaked from side when which will be such that nozzle closes, to lead
Melt body leakage rate increase when closed is caused, to need to increase cleaning frequency, plunger 3 and 1 contact portion of nozzle body are because bearing
Larger contact force, when sliding up and down, nozzle body 1 is worn more serious, is gradually increased gap, and leakage rate increases, and is significantly affected
Performance causes service life to reduce.
It is serious, when inner melt pressure sharply increases, formed as shown in figure 4, plunger is slightly crooked, cause plunger with
It is blocked between main body, under extreme case, cracking as shown in Figure 5 occurs in the weak part on nozzle body.
Summary of the invention
The utility model is in view of the shortcomings of the prior art, provide a kind of plunger type shut-off nozzles for preventing fluid clamping, this kind
The melt pressure of throttle nozzle is uniformly distributed on plunger end face, will not generate lateral pressure, effectively reduce plunger and main body it
Between frictional force so that plunger sliding it is more smooth, plunger will not injection molding when block, effectively reduce parts depreciation, subtract
Few melt leakage, increases service life, reduces maintenance time, makes cost-effective reduction.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals: one kind preventing fluid
The plunger type shut-off nozzles of clamping, including nozzle body are provided with injection molding channel in nozzle body, are arranged on nozzle body useful
Rotation on the plunger for blocking the injection molding channel, the nozzle body is provided with jacking block, is connected on the jacking block for driving
The driving element of dynamic jacking block rotation, the injection molding channel include runner after runner and injection molding before being molded, before the injection molding runner and
Plunger channel is provided with after injection molding between runner, the plunger is provided in the plunger channel, the plunger is by melt pressure
Direction is identical as the glide direction that the plunger is opened by melt.Using this kind of plunger type shut-off nozzles in this kind of throttle nozzle
Melt pressure is uniformly distributed on plunger end face, will not generate lateral pressure, effectively reduces the frictional force between plunger and main body,
So that plunger sliding is more smooth, plunger will not block when injection molding, effectively reduce parts depreciation, reduce melt leakage,
Increase service life, reduces maintenance time, make cost-effective reduction.
In above-mentioned technical proposal, it is preferred that runner bending is connected to the inner end of the plunger channel after the injection molding.Pass through
The curved design of runner after injection molding so that after injection molding at runner exit melt to the pressure of plunger and the direction of motion phase of plunger
Together, to guarantee that lateral pressure will not be generated in injection molding.
In above-mentioned technical proposal, it is preferred that runner and the plunger channel junction after the injection molding, after the injection molding
The bore of runner is less than the bore of the plunger channel.Enable plunger when moving the inner end of plunger channel using the structure
It is fitted closely with the inner end of plunger channel, effectively prevent melt leakage.
In above-mentioned technical proposal, it is preferred that runner and the plunger channel junction after the injection molding, the plunger are logical
Road side is provided with the first conical seal (contact) face, is provided on the plunger close with the second taper of first conical seal (contact) face cooperation
Cover.Pressure between first conical seal (contact) face and the second conical seal (contact) face, effective lift-off seal are capable of increasing using the structure
Property, reduce melt leakage.
In above-mentioned technical proposal, it is preferred that restraining position ring block is arranged in the plunger channel bottom, is provided with and wears on the plunger
The guide rod of the stop collar is crossed, the jacking block rotation is to push the guide rod that the plunger is made to block the injection molding stream
Road.Using the structure in injection molding by the pressure extrusion plunger of melt, plunger base is bonded extruding, liftout plunger with stop collar
Leakproofness between main body.
The utility model compared with prior art, has the following beneficial effects: using this kind of plunger type shut-off nozzles at this
The melt pressure of kind throttle nozzle is uniformly distributed on plunger end face, will not be generated lateral pressure, be effectively reduced plunger and main body
Between frictional force so that plunger sliding it is more smooth, plunger will not injection molding when block, effectively reduce parts depreciation,
Melt leakage is reduced, service life is increased, maintenance time is reduced, makes cost-effective reduction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model background technique.
Fig. 2 is the partial structural diagram of the utility model background technique.
Fig. 3 be the utility model background technique in plunger by melt pressure when and main body clearance fit schematic diagram.
Fig. 4 is plunger and structural schematic diagram when main body clamping in the utility model background technique.
Fig. 5 is the schematic diagram of main body cracking in the utility model background technique.
Fig. 6 is the structural schematic diagram of the utility model embodiment current floe condition.
Fig. 7 is the structural schematic diagram that the utility model embodiment is molded state.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing: referring to Fig. 6 to Fig. 7,
A kind of plunger type shut-off nozzles preventing fluid clamping, including nozzle body 1 are provided with injection molding channel 2 in nozzle body 1, spray
The plunger 3 for blocking the injection molding channel 2 is provided in mouth main body 1, rotation is provided with jacking block 4, institute on the nozzle body 1
The driving element 5 being connected on jacking block 4 for driving jacking block 4 to rotate is stated, driving element 5 can be chosen hydraulic in the present embodiment
A series of driving elements such as cylinder, cylinder or electric pushrod, the injection molding channel 2 include runner 21 and runner after injection molding before being molded
22, plunger channel 6 is provided between runner 22 after runner 21 and injection molding before the injection molding, setting has been in the plunger channel 6
Plunger 3 is stated, the plunger 3 is identical as the glide direction that the plunger 3 is opened by melt by melt pressure direction.Using this kind of column
Plug shut-off nozzles are uniformly distributed on plunger end face in the melt pressure of this kind of throttle nozzle, will not generate lateral pressure, have
Effect reduces the frictional force between plunger and main body, so that plunger sliding is more smooth, plunger will not block when injection molding, has
Effect reduces parts depreciation, reduces melt leakage, increases service life, reduces maintenance time, makes cost-effective reduction.
Runner 22 is bent the inner end for being connected to the plunger channel 6 after the injection molding.It is set by the bending of runner after injection molding
Meter, so that melt is identical to the pressure of plunger and the direction of motion of plunger at runner exit after injection molding, to guarantee in injection molding
Lateral pressure will not be generated.
Runner 22 and 6 junction of plunger channel after the injection molding, the bore of runner 22 is less than institute after the injection molding
State the bore of plunger channel 6.Enable plunger when moving the inner end of plunger channel and in plunger channel using the structure
End fits closely, and effectively prevent melt leakage.
Runner 22 and 6 junction of plunger channel after the injection molding, 6 side of plunger channel is provided with the first taper
Sealing surface 61 is provided with the second conical seal (contact) face 31 with first conical seal (contact) face 61 cooperation on the plunger 3.Using this
Structure is capable of increasing the pressure between the first conical seal (contact) face and the second conical seal (contact) face, and effective lift-off seal reduces melt
Leakage.
Restraining position ring block 7 is arranged in 6 bottom of plunger channel, and the guiding of the stop collar 7 is provided through on the plunger 3
Bar 32, the rotation of jacking block 4 is to push the guide rod 32 that the plunger 3 is made to block the injection molding channel 2.Using the knot
Structure is in injection molding by the pressure extrusion plunger of melt, and plunger base is bonded extruding with stop collar, between liftout plunger and main body
Leakproofness.
Claims (5)
1. a kind of plunger type shut-off nozzles for preventing fluid clamping, including nozzle body (1), nozzle body (1) is interior to be provided with note
Creeping road (2) is provided with the plunger (3) for blocking the injection molding channel (2), the nozzle body (1) on nozzle body (1)
Upper rotation is provided with jacking block (4), and the driving element (5) for driving jacking block (4) to rotate is connected on the jacking block (4), special
Sign is: the injection molding channel (2) include be molded before runner (21) and be molded after runner (22), before the injection molding runner (21) and
It is provided with plunger channel (6) between runner (22) after injection molding, is provided with the plunger (3), the column in the plunger channel (6)
It is identical as the glide direction that the plunger (3) is opened by melt by melt pressure direction to fill in (3).
2. a kind of plunger type shut-off nozzles for preventing fluid clamping as described in claim 1, it is characterised in that: after the injection molding
Runner (22) is bent the inner end for being connected to the plunger channel (6).
3. a kind of plunger type shut-off nozzles for preventing fluid clamping as described in claim 1, it is characterised in that: in the injection molding
Runner (22) and the plunger channel (6) junction afterwards, the bore of runner (22) is less than the plunger channel (6) after the injection molding
Bore.
4. a kind of plunger type shut-off nozzles for preventing fluid clamping as claimed in claim 3, it is characterised in that: in the injection molding
Runner (22) and the plunger channel (6) junction, plunger channel (6) side are provided with the first conical seal (contact) face (61) afterwards,
The second conical seal (contact) face (31) with first conical seal (contact) face (61) cooperation is provided on the plunger (3).
5. a kind of plunger type shut-off nozzles for preventing fluid clamping as described in claim 1, it is characterised in that: the plunger is logical
Restraining position ring block (7) are arranged in road (6) bottom, and the guide rod (32) of the stop collar (7), institute are provided through on the plunger (3)
Jacking block (4) rotation is stated to push the guide rod (32) that the plunger (3) is made to block the injection molding channel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039238.1U CN209580320U (en) | 2018-12-06 | 2018-12-06 | A kind of plunger type shut-off nozzles preventing fluid clamping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822039238.1U CN209580320U (en) | 2018-12-06 | 2018-12-06 | A kind of plunger type shut-off nozzles preventing fluid clamping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209580320U true CN209580320U (en) | 2019-11-05 |
Family
ID=68348526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822039238.1U Active CN209580320U (en) | 2018-12-06 | 2018-12-06 | A kind of plunger type shut-off nozzles preventing fluid clamping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209580320U (en) |
-
2018
- 2018-12-06 CN CN201822039238.1U patent/CN209580320U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 36, Lane 68, Fenglin Road, Xiaogang Street, Beilun District, Ningbo City, Zhejiang Province 315806 (Building 1, Phase II, Binjiang Equipment Pioneer Park) Patentee after: HERZOG NOZZLE VALVE SYSTEM (NINGBO) CO.,LTD. Address before: No. 438, Zhujiang Road, Beilun District, Ningbo, Zhejiang 315800 Patentee before: HERZOG NOZZLE VALVE SYSTEM (NINGBO) CO.,LTD. |
|
| CP02 | Change in the address of a patent holder |