CN107159734A - Horizontal extruder plunger case and its plunger slide guide system - Google Patents
Horizontal extruder plunger case and its plunger slide guide system Download PDFInfo
- Publication number
- CN107159734A CN107159734A CN201710509346.8A CN201710509346A CN107159734A CN 107159734 A CN107159734 A CN 107159734A CN 201710509346 A CN201710509346 A CN 201710509346A CN 107159734 A CN107159734 A CN 107159734A
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- China
- Prior art keywords
- plunger
- pin bushing
- guide pin
- case
- eccentric guide
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of horizontal extruder plunger case and its plunger slide guide system, plunger slide guide system includes being installed on the plunger gland of plunger case end and the seal and eccentric guide pin bushing of inside, plunger is arranged in the internal cavities of plunger case, is moved along central axial direction plunger with respect to plunger case；Eccentric guide pin bushing is arranged between plunger case and plunger, the central axis of central axis, plunger where the inner chamber of eccentric guide pin bushing and the central axis three coincidence for extruding plunger case, the external diameter of plunger is matched with the internal diameter of eccentric guide pin bushing, and the external diameter of eccentric guide pin bushing is matched with plunger case.Because the effect of eccentric guide pin bushing can eliminate the cumulative errors caused between plunger and eccentric guide pin bushing, eccentric guide pin bushing and extruding plunger case by processing and manufacturing and mounting means, so as to so that squeezing rod plug cylinder is arranged concentrically with plunger, the gap between eccentric guide pin bushing and seal is compensated simultaneously, forms suitable oil film thickness.
Description
Technical field
This invention relates generally to a kind of pressure processing former, more particularly to a kind of horizontal extruder, specifically relate to
And horizontal extruder plunger case and its plunger slide guide system.
Background technology
Extruder can be divided into continuous extrusion type and discontinuous extrusion type by type of action；According to head stream direction and spiral shell
The angle of bar center line, can be divided into oblique head and right-angle handpiece；It is further divided into plunger type and screw.Wherein plunger type
Extruder is a critically important type, in the case where needing the operating mode of very big extruding force shaping, with applying well, for example, is squeezed
Go out the large pipes such as aluminium alloy, magnesium alloy and section bar.
Horizontal extruder plunger case generally includes to extrude plunger case 103, plunger 101 and guide pin bushing between the two, guide pin bushing
For being positioned and being supported to plunger, positioning and slide guide effect are played in plunger motion, what is constituted using guide pin bushing as core
In plunger slide guide system, to meet plunger positioning action, the gap and guide pin bushing length ratio of plunger and guide pin bushing need to be according to plunger levels
The requirement design of motion；It is less than 6kg/cm to meet the ratio pressure on the requirement of support plunger, guide pin bushing pressure-bearing surface2；Led to meet
Gas pressure relief slot reasonable in design is wanted in sliding requirement, structure.
Guide pin bushing in existing pressurizing unit especially middle-size and small-size extruder is usually concentric guide pin bushing 202, such as the institute of accompanying drawing 3
Show.If this concentric guide pin bushing 202 is applied into large-scale (ultra-large type) ram extrusion, due to extruding plunger case 103, plunger
Gap is respectively adopted between 101 and the concentric three of guide pin bushing 202 to coordinate or excessively coordinate, therefore has been assembled by the extruder
Cheng Hou, plunger 101 will be close on the downside of concentric guide pin bushing 202 under gravity, and make the upper side of plunger 101 with
Gap is formed between concentric guide pin bushing 202, so as to cause between plunger 101 and concentric guide pin bushing 202 and concentric guide pin bushing 202 and extruding
Gap distribution between plunger case 103 is uneven, as shown in figure 4, cause to extrude the seal loading of the bottom of plunger case 103 compared with
Greatly, seal excessive wear can be caused after extruder plunger longtime running and declines its life-span, more serious can even make
Leaked into extruding plunger case 103.
Above- mentioned information is only used for strengthening the understanding of the background to the present invention, therefore it disclosed in the background section
It can include not constituting the information to prior art known to persons of ordinary skill in the art.
The content of the invention
A primary object of the present invention is to overcome at least one defect of above-mentioned prior art horizontal crowded there is provided one kind
The plunger slide guide system of press plunger case, so that the gap uniformity between extruding plunger case and plunger, sealing forms rational dynamic
State oil film thickness, so as to improve seal and extrude the service life of plunger case.
Another main purpose of the present invention is to overcome at least one defect of above-mentioned prior art, and there is provided one kind is horizontal
Extruder plunger case, the service life of horizontal extruder plunger case is improved by improving the service life of seal.
For achieving the above object, the present invention is adopted the following technical scheme that：
According to an aspect of the invention, there is provided a kind of plunger slide guide system of horizontal extruder plunger case, it includes
Plunger case, plunger, eccentric guide pin bushing, seal and gland are extruded, plunger case is cylindrical in shape, and plunger case has central axis；Plunger
It is arranged in the internal cavities of plunger case, plunger is arranged concentrically with extruding plunger case, along central axial direction plunger opposing compression
Plunger case is moved；The eccentric guide pin bushing is arranged between the extruding plunger case and the plunger, the guide pin bushing of the eccentric guide pin bushing
Wall includes the first side wall portion and second sidewall portion, and the first side wall portion has a first thickness, and the second sidewall portion has the
Two thickness, the first thickness is more than the second thickness, and the first side wall portion is arranged at the lower section in the second sidewall portion；
The central axis three of the central axis of the inner chamber of the eccentric guide pin bushing, the central axis of the plunger and the extruding plunger case
Person is overlapped, and the external diameter of the plunger is matched with the internal diameter of the eccentric guide pin bushing, external diameter and the squeezing rod of the eccentric guide pin bushing
Plug cylinder is matched；The seal is sheathed on the periphery of the plunger, and is placed in the inner chamber of the extruding plunger case；The pressure
Lid is pressed in the end of the extruding plunger case, and the external diameter of the gland is more than the internal diameter of the extruding plunger case, the sealing
Part is arranged between the gland and the eccentric guide pin bushing, and the seal is pressed in the end of the eccentric guide pin bushing.
According to an embodiment of the present invention, wherein the outer peripheral face of the eccentric guide pin bushing and the section of internal face are circle
Shape, between the round heart in section of the outer peripheral face on same section and the round heart in section of the internal face between one
Every.
According to an embodiment of the present invention, it is described to let out wherein being provided with gas pressure relief slot on the inner surface of the eccentric guide pin bushing
Indent is arranged at the first side wall portion.
According to an embodiment of the present invention, wherein the gas pressure relief slot is straight channel type gas pressure relief slot, the gas pressure relief slot includes many
The deep-slotted chip breaker of the individual internal face for being arranged at the eccentric guide pin bushing and the axial groove for connecting the adjacent deep-slotted chip breaker, it is described
The bearing of trend of axial groove is parallel with the central axial direction of the eccentric guide pin bushing.
According to an embodiment of the present invention, wherein the plunger slide guide system of the horizontal extruder plunger case also includes driving
Dynamic device, the drive device is fixed on the plunger to drive plunger motion.
According to an embodiment of the present invention, wherein the plunger has the stretching stretched out in outside the extruding plunger case
End, the external part is provided with connector, for connecting the drive device and the plunger.
According to an embodiment of the present invention, wherein the offset of the plunger is δ, the seal is led with the bias
The gap of inner room is δ2, the offset of the eccentric guide pin bushing is δ caused by fabricating and installing1, wherein δ=δ1+δ2。
According to an embodiment of the present invention, wherein the internal diameter size of the squeezing rod plug cylinder isWherein the upper deviation is
+ a, lower deviation is+b；The outside dimension of plunger isWherein the upper deviation is-c, and lower deviation is-d；Outside the eccentric guide pin bushing
Footpath is with the extruding plunger case minor diameter fit, the outside dimension of eccentric guide pin bushingWherein the upper deviation be+e, lower deviation for-
f；The eccentric guide pin bushing internal diameter coordinates with the plunger outer diameter, and the eccentric guide pin bushing internal diameter size isWherein the upper deviation for+
G, lower deviation is+h；
When the eccentric guide pin bushing external diameter is with the extruding plunger case minor diameter fit, the cumulative maximum produced due to processing and manufacturing
Tolerance is n：
N=+a- (- d)；
When the eccentric guide pin bushing internal diameter coordinates with the plunger outer diameter, because the cumulative maximum tolerance that processing and manufacturing is produced is
m：
M=+g- (- f)；
The accumulated error of the plunger, the eccentric guide pin bushing and the extruding plunger case is s：
S=m+n；
The offset of the eccentric guide pin bushing is caused by fabricating and installing：
δ1=s/2.
According to an embodiment of the present invention, wherein being squeezed along the size of eccentric guide pin bushing described in central axial direction to be described
The 1/4 to 1/3 of the size of compression leg plug cylinder.
According to another aspect of the present invention there is provided a kind of horizontal extruder plunger case, wherein the horizontal extruder plunger
Cylinder includes the plunger slide guide system for the horizontal extruder plunger case that the present invention is provided.
As shown from the above technical solution, the advantage and product of horizontal extruder plunger case of the invention and its plunger slide guide system
Pole effect is：The present invention horizontal extruder plunger case plunger slide guide system include be arranged at extruding plunger case and plunger it
Between eccentric guide pin bushing, and the thickness in the first side wall portion of the eccentric guide pin bushing is more than the thickness in second sidewall portion, by by first
Side of sidewall portion is arranged at the lower section in second sidewall portion, after the completion of can making the plunger slide guide system assembles of horizontal extruder plunger case,
The problem of being compensated by the bias of eccentric guide pin bushing due to plunger caused by Action of Gravity Field and extruding plunger case decentraction, so that
Plunger case can be made to be arranged concentrically with plunger；The gap of seal and cylinder body is adjusted, is easy to sealing to form suitable oil film thickness.
Brief description of the drawings
By being considered in conjunction with the accompanying following the following detailed description of the embodiment of the present invention, various targets of the invention,
Feature and advantage will become apparent.Accompanying drawing is only the exemplary diagram of the present invention, is not necessarily drawn to scale.
In the accompanying drawings, same reference represents same or similar part all the time.Wherein：
Fig. 1 is a kind of structure chart of pressurizing unit according to an illustrative embodiments.
Fig. 2 is the longitudinal sectional view of the pressurizing unit in Fig. 1.
Fig. 3 is preferable operating mode plunger, concentric sleeve and the relative position schematic diagram for extruding plunger case.
Fig. 4 is actual condition plunger, concentric sleeve and the relative position schematic diagram for extruding plunger case.
Fig. 5 is the plunger in Fig. 1, extrudes plunger case and the cross section view of eccentric guide pin bushing.
Fig. 6 be Fig. 5 in eccentric guide pin bushing structure chart.
Fig. 7 be Fig. 5 in eccentric guide pin bushing sectional view.
Fig. 8 is the partial enlarged drawing of the gas pressure relief slot of part in Fig. 7 centre circles.
Wherein, description of reference numerals is as follows：
101st, plunger；202nd, concentric guide pin bushing；
103rd, plunger case is extruded；404th, gas pressure relief slot；
105th, eccentric guide pin bushing；106th, gland；
401st, deep-slotted chip breaker；402nd, axial groove.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
Fig. 1 is a kind of slide guide system installation diagram of horizontal extruder plunger according to an illustrative embodiments.Fig. 2
It is the longitudinal sectional view of the horizontal extruder plunger case in Fig. 1.Fig. 5 is the plunger 101 in Fig. 1, extrudes plunger case 103 and inclined
The cross section view of heart guide pin bushing 105.
Reference picture 1, Fig. 2 and Fig. 5, a kind of embodiment of the invention, the plunger slide guide of horizontal extruder plunger case
System can include extruding plunger case 103, plunger 101 and eccentric guide pin bushing 105.Extruding plunger case 103 can be with cylindrical in shape, such as
But square tube shape, oval cylinder etc., a kind of embodiment of the invention are not limited to, extruding plunger case 103 can be cylindrical shape,
The extruding plunger case 3 can have central axis.Plunger 101 can be arranged in the internal cavities of extruding plunger case 103, plunger
101 can be arranged concentrically with extruding plunger case 103, can be transported along central axial direction plunger 101 with opposing compression plunger case 103
It is dynamic.Eccentric guide pin bushing 105 can be arranged between extruding plunger case 103 and plunger 101, for supporting and positioning plunger 101.Root
According to the embodiment of the invention, wherein the central axis of the inner chamber of eccentric guide pin bushing 105, the central axis of plunger 101 and
The central axis three for extruding plunger case 103 is overlapped, and the external diameter of plunger 101 can be matched with the internal diameter of eccentric guide pin bushing 105, eccentric
The external diameter of guide pin bushing 105 can be matched with extruding plunger case 103.Seal (not shown) can be arranged at the inside of extruding plunger case
In cavity, it can such as, but not limited to be sheathed on the periphery of plunger 101.The seal can be squeezed in institute by gland 106
The end of eccentric guide pin bushing 105 is stated, sealing is provided for the motion of the opposing compression plunger case 103 of plunger 101 and forms lubricating oil film.According to
The embodiment of the present invention, the wherein seal can be sealing ring, but be not limited.
Reference picture 6 a, embodiment of the invention, the guide pin bushing wall of eccentric guide pin bushing 105 can include the first side wall portion
With second sidewall portion, the first side wall portion has a first thickness, and second sidewall portion has a second thickness, and first thickness can be more than the
Two thickness, the first side wall portion can be arranged at the lower section in second sidewall portion.
The design principle of the present invention is described in detail below, and eccentric guide pin bushing 105 can rotate adjustment during assembling, with
The thicker side of guide pin bushing wall is set to be located at the lower section of plunger 101, due to eccentric guide pin bushing 105, extruding plunger case 103 and plunger
It is respectively that gap coordinates between 101, therefore after finishing assembly, due to Action of Gravity Field, it is thicker that plunger 101 is close to the guide pin bushing wall
Side, that is, plunger 101 will be supported by the first side wall portion with larger thickness, so as to so that plunger 101 and squeezing rod
Plug cylinder 103 is formed as being arranged concentrically, also just balanced gap between plunger 101 and extruding plunger case 103, completes to plunger
The adjustment of seal clearance between 101 and eccentric guide pin bushing 105, eccentric guide pin bushing 105 and extruding plunger case 103 compensates, it is to avoid close
Sealing local excessive is worn and torn and reduces the situation in life-span, reduces maintenance cost.
The purpose of design of eccentric guide pin bushing 105 is to adjust from mechanical structure because the processing that the deadweight of plunger 101 is caused is tired out
Product tolerance is excessive, and heavy wear seal even results in cylinder body leakage problem, to overcome drawbacks described above.The eccentric guide pin bushing 105 of design
When to take into full account the assembly relation between extruding plunger case 103, eccentric guide pin bushing 105 and the three of plunger 101.
The embodiment of the invention, the offset of eccentric guide pin bushing 105 can have following computational methods：
Extruding the internal diameter size of plunger case 103 can be(upper deviation is+a, and lower deviation is+b)；
The outside dimension of plunger 101 can be(upper deviation is-c, and lower deviation is-d)；
The external diameter of eccentric guide pin bushing 105 can be with the extruding minor diameter fit of plunger case 103, the outside dimension of eccentric guide pin bushing 105(upper deviation is+e, and lower deviation is-f)；
The eccentric internal diameter of guide pin bushing 105 can be able to be with the major diameter fit of plunger 101, the eccentric internal diameter size of guide pin bushing 105(on
Deviation is+g, and lower deviation is+h)；
Thus, when the eccentric external diameter of guide pin bushing 105 is with extruding 103 minor diameter fit of plunger case, the maximum produced due to processing and manufacturing
Cumulative limit can be：
N=+a- (- d)；
When the eccentric internal diameter of guide pin bushing 105 and 101 major diameter fit of plunger, the cumulative maximum tolerance produced due to processing and manufacturing can be with
For：
M=+g- (- f)；
Due to the design feature of the plunger slide guide system of horizontal extruder plunger case, under gravity, plunger 101, partially
The accumulated error maximum of heart guide pin bushing 105 and extruding plunger case 103 can reach：
S=m+n；
The offset of eccentric guide pin bushing 105 can be caused by fabricating and installing：
δ1=s/2；
It is hydrodynamic lubrication, the frictional force of plunger 101 and eccentric guide pin bushing 105 in motion process further to consider plunger 101
It is directly proportional with the viscosity size of liquid, i.e., in the direction of the advance of plunger 101 due to the effect of dynamic pressure, plunger 101 and eccentric guide pin bushing
105 have kept apart, and the friction of plunger 101 and eccentric guide pin bushing 105 has become the friction of liquid via the friction of two kinds of materials,
In this case coefficient of friction is very small, weares and teares also very small.The generation of dynamic pressure comes from the effect of hydraulic wedge, plunger 101 and partially
Hydraulic wedge between heart guide pin bushing 105 comes from the sealing of extruding plunger case, due to horizontal extruder plunger Action of Gravity Field, eccentric guide pin bushing
The dynamic pressure of 105 bottoms is more than the dynamic pressure on top, as long as the dynamic pressure difference of top and the bottom is more than certain value, plunger 101 and eccentric guide pin bushing 105
Motion just can be kept apart.During to reach that the sealed optimum efficiency of plunger 101, i.e. plunger 101 stretch out, surface is with one layer of thin oil
Film, is both that dynamic pressure that liquid is produced and sealed precompression are close, due to fluid friction during retraction, annular seal space is produced negative pressure
Oil film is taken back, the method tested by physical prototyping is chosen between the sealing to form optimum oil film thickness and eccentric guide pin bushing 105
Gap delta2。
The offset of plunger slide guide systematic eccentricity guide pin bushing 105 of the extruder of the present invention can be：
δ=δ1+δ2
A kind of embodiment of the present invention, ram extrusion master cylinder exemplified by eccentric guide pin bushing using being illustrated, and this is squeezed
The internal diameter size of compression leg plug cylinder 103 can be(upper deviation is+0.18, and lower deviation is+0.05), plunger 101 is for example but not
It is limited to be main plunger, the outside dimension of the main plunger can be(upper deviation be -0.13, lower deviation for -
0.305), the outside dimension of eccentric guide pin bushing 105 can be(upper deviation is+0.087, and lower deviation is -0.087), partially
The surface of heart guide pin bushing 105 can coordinate with main plunger external diameter surface, and the outside dimension of eccentric guide pin bushing 105 can beIt is (upper inclined
Difference is+0.25, and lower deviation is+0.05), it can be calculated
δ1=0.41
The gap for determining to be formed between the sealing of optimum oil film thickness and guide pin bushing is tested according to physical prototyping
δ2=0.07
That is the offset of the slide guide systematic eccentricity guide pin bushing 105 of the extruder of present embodiment
δ=δ1+δ2=0.48
Reference picture 1, Fig. 2 and Fig. 5, according to an aspect of the invention, there is provided a kind of horizontal extruder plunger case
Plunger slide guide system, extruding plunger case 103 and plunger 101 can be arranged at intervals, and eccentric guide pin bushing 105 is arranged at squeezing rod
Between plug cylinder 103 and plunger 101.It is understood that the internal cavities of eccentric guide pin bushing 105 center and outer surface center it
Between offset, factors that can be in actual condition determine, such as, but not limited to the weight and bias of plunger 101
The factors such as the material of guide pin bushing 105, as long as being completed back-plunger 101 and extruding plunger case 103 is concentric, all in protection of the invention
In the range of.
As shown in Figure 7 and Figure 8, according to an embodiment of the present invention, wherein can be set on the inner surface of eccentric guide pin bushing 105
It is equipped with gas pressure relief slot 404.One embodiment of the present invention, wherein gas pressure relief slot 404 can be straight channel type gas pressure relief slot.According to the present invention's
One embodiment, the wherein gas pressure relief slot 404 can be arranged at the first side wall portion and/or second sidewall portion.According to the present invention
An embodiment, wherein gas pressure relief slot 404 can include the deep-slotted chip breaker of multiple internal faces for being arranged at eccentric guide pin bushing 105
401 and for connecting the axial groove 402 of adjacent deep-slotted chip breaker 401, the bearing of trend of axial groove 402 and eccentric guide pin bushing 105
Central axial direction is parallel.According to the embodiment of the present invention, wherein deep-slotted chip breaker 401 is a part for arc-shaped slot,
Such as, but not limited to semicircular arc groove, but be not limited, can be 1/3 arc-shaped slot, or be 2/3 arc-shaped slot, all exist
In protection scope of the present invention.In use, because the pressure drop in Action of Gravity Field the first side wall portion is more than second sidewall portion
Pressure, now lubricating oil can by gas pressure relief slot 404 by lower section be expressed to top so that dynamic pressure value control in certain model
In enclosing, some lubricating oil can flow between the adjacent deep-slotted chip breaker in the first side wall portion, to balance various pieces
Pressure.According to the embodiment of the present invention, the wherein gas pressure relief slot 404 in the first side wall portion can be let out with second sidewall portion
Indent 404 is not connected each other.
Due to the generation of the dynamic pressure during advance of plunger 101, influence inevitably is produced on sealing ring, in order to both sharp
With dynamic pressure, and sealing ring is not damaged, so gas pressure relief slot 404 can be machined with eccentric guide pin bushing 105, so that dynamic pressure value is controlled
In certain scope.
The plunger slide guide system of one embodiment of the present invention, wherein horizontal extruder plunger case also includes drive device,
Drive device is fixed on plunger 101 to drive plunger 101 to move.It is understood that the drive device can be hydraulic cylinder, spiral shell
Rotary sleeve adjustment structure, but be not limited, all within the scope of the present invention.
The plunger slide guide system of one embodiment of the present invention, wherein horizontal extruder plunger case also includes connector, even
Fitting can be arranged at the external part of plunger 101, to make plunger 101 be connected with drive device by the connector, will driving
Power on device is transferred to plunger 101.The such as, but not limited to connector can be rod member, and the bearing of trend of rod member can be with
The bearing of trend of central axis is identical.According to actual condition needs, the rod member can have multiple section shape, for example but not limit
In circle, ellipse, rhombus, regular polygon, rectangle etc., all within the scope of the present invention.Another specific reality of the present invention
Mode is applied, such as, but not limited to the connector can be ring flange, the ring flange can be arranged at the external part of plunger 101, lead to
Crossing the ring flange can be such that plunger 101 is connected with drive device.
One embodiment of the present invention, wherein being extruding plunger case 103 along the size of the eccentric guide pin bushing 105 of central axial direction
Size 1/4 to 1/3.
Another aspect of the present invention, also provides a kind of horizontal extruder plunger case, and wherein horizontal extruder plunger case includes
The plunger slide guide system for the horizontal extruder plunger case that the present invention is provided.
Feature, structure or characteristic described in the invention can be combined in any suitable manner to be implemented one or more
In mode.Embodiments of the present invention are fully understood so as to provide there is provided many details in superincumbent description.So
And, it will be appreciated by persons skilled in the art that technical scheme can be put into practice without one in the specific detail
Or more, or can be using other methods, component, material etc..In other cases, it is not shown in detail or describes known knot
Structure, material operate to avoid fuzzy each aspect of the present invention.
Claims (10)
1. the plunger slide guide system of a kind of horizontal extruder plunger case, it is characterised in that the plunger slide guide system includes：
Plunger case is extruded, the extruding plunger case is cylindrical in shape, the extruding plunger case has central axis；
Plunger, the plunger is arranged in the internal cavities of the extruding plunger case, and the plunger and the extruding plunger case are same
The heart is set, and is moved along the relatively described extruding plunger case of plunger described in the central axial direction；
Eccentric guide pin bushing, the eccentric guide pin bushing is arranged between the extruding plunger case and the plunger, and the eccentric guide pin bushing is led
Jacket wall includes the first side wall portion and second sidewall portion, and the first side wall portion has first thickness, and the second sidewall portion has
Second thickness, the first thickness is more than the second thickness, and the first side wall portion is arranged under the second sidewall portion
Side；The central shaft of the central axis of the inner chamber of the eccentric guide pin bushing, the central axis of the plunger and the extruding plunger case
Line three is overlapped, and the external diameter of the plunger is matched with the internal diameter of the eccentric guide pin bushing, and the external diameter of the eccentric guide pin bushing is squeezed with described
Compression leg plug cylinder is matched；
Seal, the seal is sheathed on the periphery of the plunger, and is placed in the inner chamber of the extruding plunger case；
Gland, the gland is pressed in the end of the extruding plunger case, and the external diameter of the gland is more than the extruding plunger case
Internal diameter, the seal is arranged between the gland and the eccentric guide pin bushing, by the seal be pressed in it is described partially
The end of heart guide pin bushing.
2. the plunger slide guide system of horizontal extruder plunger case as claimed in claim 1, it is characterised in that the eccentric guide pin bushing
Outer peripheral face and the section of internal face be circle, the round heart in section and the inwall of the outer peripheral face on same section
At a distance of an interval between the round heart in section in face.
3. the plunger slide guide system of horizontal extruder plunger case as claimed in claim 2, it is characterised in that the eccentric guide pin bushing
Internal face on be provided with gas pressure relief slot, the gas pressure relief slot is arranged at the first side wall portion.
4. the plunger slide guide system of horizontal extruder plunger case as claimed in claim 3, it is characterised in that the gas pressure relief slot is
Straight channel type gas pressure relief slot, the gas pressure relief slot includes the deep-slotted chip breaker of multiple internal faces for being arranged at the eccentric guide pin bushing and for connecting
The axial groove of the adjacent deep-slotted chip breaker, the central axial direction of the bearing of trend of the axial groove and the eccentric guide pin bushing is put down
OK.
5. the plunger slide guide system of the horizontal extruder plunger case as any one of Claims 1-4, it is characterised in that
The plunger slide guide system of the horizontal extruder plunger case also include drive device, the drive device be fixed on the plunger with
Drive plunger motion.
6. the plunger slide guide system of horizontal extruder plunger case as claimed in claim 5, it is characterised in that the plunger has
The external part stretched out in outside the extruding plunger case, the external part is provided with connector, for connecting the drive device
With the plunger.
7. the plunger slide guide system of the horizontal extruder plunger case as any one of Claims 1-4, it is characterised in that
The offset of the plunger is δ, and the gap between the seal and the eccentric guide pin bushing is δ2, draw due to fabricating and installing
The offset of the eccentric guide pin bushing risen is δ1, wherein δ=δ1+δ2。
8. the plunger slide guide system of horizontal extruder plunger case as claimed in claim 7, it is characterised in that the extruding plunger
The internal diameter size of cylinder isWherein the upper deviation is+a, and lower deviation is+b；The outside dimension of plunger isThe wherein upper deviation
For-c, lower deviation is-d；The external diameter of the eccentric guide pin bushing and the extruding plunger case minor diameter fit, the external diameter of the eccentric guide pin bushing
Size isWherein the upper deviation is+e, and lower deviation is-f；The eccentric guide pin bushing internal diameter coordinates with the plunger outer diameter, described
Eccentric guide pin bushing internal diameter size isWherein the upper deviation is+g, and lower deviation is+h；
When the eccentric guide pin bushing external diameter is with the extruding plunger case minor diameter fit, the cumulative maximum tolerance produced due to processing and manufacturing
For n：
N=+a- (- d)；
When the eccentric guide pin bushing internal diameter coordinates with the plunger outer diameter, because the cumulative maximum tolerance that processing and manufacturing is produced is m：
M=+g- (- f)；
The accumulated error of the plunger, the eccentric guide pin bushing and the extruding plunger case is s：
S=m+n；
The offset of the eccentric guide pin bushing is caused by fabricating and installing：
δ1=s/2.
9. the plunger slide guide system of the horizontal extruder plunger case as any one of Claims 1-4, it is characterised in that
It is the 1/4 to 1/3 of the size of the extruding plunger case along the size of eccentric guide pin bushing described in central axial direction.
10. a kind of horizontal extruder plunger case, it is characterised in that the horizontal extruder plunger case includes such as claim 1 to 9
Any one of horizontal extruder plunger case plunger slide guide system.
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| DE2658886A1 (en) * | 1976-12-24 | 1978-06-29 | Benteler Werke Ag | Multi-stage hydraulic lifting machine - has eccentric telescopic piston and cylinder sections with weather protection for platforms |
| US4244627A (en) * | 1979-06-08 | 1981-01-13 | Clark Equipment Company | Lift cylinder assembly |
| SU879069A1 (en) * | 1979-10-08 | 1981-11-07 | Glyadchenko Savva A | Cylinder rod securing bracket |
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| CN107159734B (en) | 2019-05-31 |
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Effective date of registration: 20201231 Address after: Room 308, building 3, No.1, Lingang Economic Zone, Binhai New Area, Tianjin 300460 Patentee after: TZ (TIANJIN) BINHAI HEAVY MACHINERY Co.,Ltd. Address before: 300457 TEDA msd-c3-702, TEDA, Tianjin Patentee before: TAIZHONG (TIANJIN) HEAVY EQUIPMENT TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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