CN206733531U - A kind of injection machine pull bar - Google Patents
A kind of injection machine pull bar Download PDFInfo
- Publication number
- CN206733531U CN206733531U CN201621468829.5U CN201621468829U CN206733531U CN 206733531 U CN206733531 U CN 206733531U CN 201621468829 U CN201621468829 U CN 201621468829U CN 206733531 U CN206733531 U CN 206733531U
- Authority
- CN
- China
- Prior art keywords
- piston
- bar body
- injection machine
- pull bar
- keeper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of injection machine pull bar, and it includes bar body, the stress external thread section in the middle part of bar body, the piston for being sheathed on bar body and connection being matched with external thread section screw thread, the piston keeper positioned between bar body and piston to piston.Piston is connected through a screw thread with external thread section, and screw thread make it that connecting portion stress is more balanced, avoid stress concentration, prevent pull bar to be broken as force part, multi-turn thread stress.Bar body and piston set piston keeper to realize positioning and orientation its attachment structure after being connected through a screw thread, and the direction and position of lock piston, prevent piston from rotating, improve the stability of attachment structure, avoid high frequency start and activation plug is slided and released.Hence in so that the annexation of piston and bar body stabilization and stress equalization, so as to improve the durability of fit precision and rod assembly, avoid many economic losses.
Description
Technical field
Injection machine field is the utility model is related to, more particularly to a kind of injection machine with piston orientation and positioner is drawn
Bar.
Background technology
Injection machine pull bar is also known as locking piston bar, brother's woods post, be moving platen is oriented to for injection machine and by its with
The furniture assembly of solid plate locking, in injection machine running, power is applied by injection machine pull bar and drives moving platen to move
Make mould matched moulds and die sinking, very important effect is played during completing to be molded.
Shown in Figure 1, existing injection machine pull bar includes bar body 11, and bar body 11, which is provided with, to be used to support work
The annular boss 12 of the shaft shoulder structure of plug 13, the end face of annular boss 12 form piston support face.The piston support face is cone
Shape face 14, the central axis L-shaped of taper surface 14 and bar body 11 are angled.The bar body 11 is close to the taper
It is piston construction section 16 at face 14, the periphery of piston construction section 16 is provided with annular groove 18 and external screw thread 15, in annular groove 18
Provided with sealing ring 19, external screw thread 15 is connected with piston 13 and nut 17, and piston 13 is set in outside piston construction section 16, and piston 13 is pressed
It is close to and is connected on the taper surface 14 between nut 17, passes through the sealing ring 19 between the inwall of piston 13 and bar body 11
Sealing.The bar body 11 is used to be connected with the back plate of injection machine backwards to one end of taper surface 14, and bar body 11 is towards cone
The one end in shape face is used to be connected with the solid plate of injection machine, not shown in figure.
The central axis L-shaped of the taper surface 14 contacted with annular boss 12 due to piston 13 and bar body 11 is into certain angle
Degree, so the bar body 11 and junction E of taper surface 14 easily forms stress concentration, when piston 13 moves along arrow D directions, make
Firmly F can cause taper surface 14 to be easily broken off with the junction E of bar body 11.Meanwhile moving platen is when matched moulds or generation
Slight deformation, bar body and piston can also be pressurized when matched moulds and produce flexural deformation, and this results in taper surface anchor ring
Circumferential discontinuity equalization everywhere, high-frequency injection moulding process make it that continually local pressure is gone beyond the limit of pull bar, so as to cause to draw
Crack, which occurs, in the root of bar taper surface causes pull bar to be broken.Pull bar fracture will cause production disruption, be caused to user huge
Economic loss.
Further, since taper surface 14 is the contact surface of bar body 11 and piston 13, the injection rhythm of high frequency causes pull bar
Body and piston frequent deformation, therefore the fit precision deficiency of contact surface can cause piston to be beated and produce sound, therefore to it
Requirement on machining accuracy is high, and degree-of-difficulty factor is big, and cost is high.
The content of the invention
In view of the shortcomings of the prior art, the technical problems to be solved in the utility model is to provide a kind of stress equalization so as to carry
The injection machine pull bar of high fit precision and durability.
In order to solve the above-mentioned technical problem, technical scheme is used by the utility model：A kind of injection machine pull bar, it is wrapped
Bar body, the stress external thread section in the middle part of bar body are included, bar body is sheathed on and is matched with external thread section screw thread
The piston of connection, the piston keeper positioned between bar body and piston to piston.
The a kind of of technical scheme as the utility model injection machine pull bar improves, and the piston keeper is located at external screw thread
The end of section, the axially extending end ring for forming diameter and being less than piston of the piston, the internal thread of piston extend to the end face of end ring,
End ring corresponds to piston keeper and coordinates clamping provided with open slot and piston keeper, and bar body is provided with deep gouge and rabbets the piston
Keeper.
The a kind of of technical scheme as the utility model injection machine pull bar improves, the piston keeper be flat key or
Pin, the deep gouge correspond to keyway or pin-and-hole.
The a kind of of technical scheme as the utility model injection machine pull bar improves, and the outer peripheral face of end ring forms the shaft shoulder, axle
Shoulder is provided with lock ring and pins piston keeper around end ring.
The a kind of of technical scheme as the utility model injection machine pull bar improves, and the lock ring passes through screw and piston
Shaft shoulder interlocking.
The a kind of of technical scheme as the utility model injection machine pull bar is improved, and the piston is set to away from end ring one end
Anchor ring pullover, anchor ring pullover internal face are tightly connected with bar body by sealing ring.
The a kind of of technical scheme as the utility model injection machine pull bar improves, end ring and work in the bar body
One end of plug keeper direction is used to be connected with the back plate of injection machine, and the other end of the bar body with injection machine for determining
Template connects and is provided with compensating groove.
The beneficial effects of the utility model are：Piston is connected through a screw thread with external thread section, screw thread as force part,
Multi-turn thread stress make it that connecting portion stress is more balanced, avoids local pressure excessive and causes stress concentration, so as to prevent
Pull bar is broken.Bar body sets piston keeper to realize positioning and orientation its attachment structure after being connected through a screw thread with piston
Effect, the direction and position of lock piston, so as to prevent piston from rotating, improves the stability of attachment structure, avoids high frequency
Deformation caused by start causes piston slip to release circumferential tangential release force caused by piston.Hence in so that piston and pull bar
The annexation stabilization and stress equalization of body, so as to improve the durability of fit precision and rod assembly.
Brief description of the drawings
Fig. 1 is the structural representation of existing injection machine rod assembly.
Fig. 2 is the single pole structural representation in a kind of injection machine pull bar embodiment of the utility model.
Fig. 3 is the rod assembly partial structural diagram in a kind of injection machine pull bar embodiment of the utility model.
Embodiment
Further illustrate specific embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Figure 2 and Figure 3, a kind of injection machine pull bar of the utility model, it includes bar body 21, located at bar body
The stress external thread section 22 at 21 middle parts, the piston 31 for being sheathed on bar body 21 and connection being matched with the screw thread of external thread section 22, set
The piston keeper 23 positioned between bar body 21 and piston 31 to piston 31.Piston 31 passes through with external thread section 22
Threaded connection, screw thread eliminate stress step, the axial force main function of bar body 21 is in outer spiral shell as force part
Line, multi-turn thread disperse stress and make it that connecting portion stress is more balanced, prevent force localization from avoiding part in stress step
Stress is excessive and causes stress concentration, so as to prevent pull bar to be broken.Bar body 21 and piston 31 be connected through a screw thread after to it
Attachment structure sets piston keeper 23 to realize positioning and orientation, the direction and position of lock piston 31, so as to prevent
Only piston 31 rotates, and improves the stability of attachment structure, avoids deformation caused by high frequency start to circumferentially being cut caused by piston
Cause piston 31 to slide to release force to release, avoid the bounce of piston and do not produce sound.Hence in so that piston 31 and pull bar sheet
The annexation stabilization and stress equalization of body 21, so as to improve the durability of fit precision and rod assembly.
More preferably, the piston keeper 23 is located at the end of external thread section 22, and the piston 31 is axially extending to be formed directly
Footpath is less than the end ring 32 of piston 31, and the internal thread 33 of piston 31 extends to the end face of end ring 32,32 corresponding piston keeper of end ring
23 are provided with open slot 35 coordinates clamping with piston keeper 23, and bar body 21 rabbets the piston keeper provided with deep gouge 25
23.Both there is end ring 32 stress screw thread to disperse axially loaded, and locally set open slot 35 to be carried out with piston keeper 23 at it
Clamping, prevent piston 31 from rotating, keep the stability of threaded connection so that attachment structure is more stable.Accordingly, deep gouge 25 is set
The end position in the external thread section 22 of bar body 21 is put to increase the positioning precision of piston, effectively prevent piston 31 loosen or
Rotate, so as to improve the intensity of pull bar.
More preferably, the piston keeper 23 is flat key or pin, and the deep gouge 25 is corresponded to keyway or pin-and-hole, connected using key
Connect the requirement that positioning piston had both been may conform to especially with flat key and has prevented screw thread from sliding, prevent piston thread from loosening, can also incite somebody to action
Piston effect is dispersed on the larger section of flat key in externally threaded active force part, so as to reduce the wind of the fracture of bar body 21
Danger.
More preferably, the outer peripheral face of end ring 32 forms the shaft shoulder, and the shaft shoulder is provided with lock ring 36 and pins piston keeper around end ring 32
23, lock ring 36 prevents key or pin as keeper from dropping out, and is easily installed again.
More preferably, the lock ring 36 realizes the anti-lost of keeper and improves end by screw and the shaft shoulder interlocking of piston 31
The intensity of ring 32.
More preferably, the piston 31 is set to anchor ring pullover 38, anchor ring pullover internal face and pull bar sheet away from the one end of end ring 32
Body 21 is tightly connected by sealing ring 28, and so as to surround sealing ring cavity, pressure fluid is supplied to as medium as pressure cylinder
Transmitting driving force drives moving platen opposing pistons 31 to move.
More preferably, one end of the end ring in the bar body 21 and piston keeper direction is used for the back plate with injection machine
Connection, the other end of the bar body 21 is used to be connected with the solid plate of injection machine and be provided with compensating groove 26, so as to reduce
Adversely affected caused by solid plate flexural deformation and four-pull-rod unbalance loading, further reduce the risk of pull bar fracture.
Above disclosed is only preferred embodiment of the present utility model, certainly can not be new to limit this practicality with this
The interest field of type, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the utility model and covered
Scope.
Claims (7)
- A kind of 1. injection machine pull bar, it is characterised in that：Stress external thread section including bar body, in the middle part of bar body, It is sheathed on bar body and the piston of connection is matched with external thread section screw thread, piston is carried out between bar body and piston The piston keeper of positioning.
- 2. injection machine pull bar according to claim 1, it is characterised in that：The piston keeper is located at the end of external thread section Portion, the axially extending end ring for forming diameter and being less than piston of the piston, the internal thread of piston extend to the end face of end ring, end ring pair Answer piston keeper to be provided with open slot and coordinate clamping with piston keeper, bar body is provided with deep gouge and rabbets the piston positioning Part.
- 3. injection machine pull bar according to claim 2, it is characterised in that：The piston keeper is flat key or pin, described Deep gouge corresponds to keyway or pin-and-hole.
- 4. injection machine pull bar according to claim 2, it is characterised in that：The outer peripheral face of the end ring forms the shaft shoulder, the shaft shoulder Provided with lock ring piston keeper is pinned around end ring.
- 5. injection machine pull bar according to claim 4, it is characterised in that：The lock ring is locked by the shaft shoulder of screw and piston Connect.
- 6. injection machine pull bar according to claim 2, it is characterised in that：The piston is set to anchor ring set away from end ring one end Head, anchor ring pullover internal face are tightly connected with bar body by sealing ring.
- 7. injection machine pull bar according to claim 2, it is characterised in that：End ring and piston positioning in the bar body One end of part direction is used to be connected with the back plate of injection machine, and the other end of the bar body is used to connect with the solid plate of injection machine Connect and be provided with compensating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468829.5U CN206733531U (en) | 2016-12-29 | 2016-12-29 | A kind of injection machine pull bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468829.5U CN206733531U (en) | 2016-12-29 | 2016-12-29 | A kind of injection machine pull bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206733531U true CN206733531U (en) | 2017-12-12 |
Family
ID=60555723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621468829.5U Withdrawn - After Issue CN206733531U (en) | 2016-12-29 | 2016-12-29 | A kind of injection machine pull bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206733531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626291A (en) * | 2016-12-29 | 2017-05-10 | 薛超连 | Injection molding machine pull rod |
-
2016
- 2016-12-29 CN CN201621468829.5U patent/CN206733531U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626291A (en) * | 2016-12-29 | 2017-05-10 | 薛超连 | Injection molding machine pull rod |
| CN106626291B (en) * | 2016-12-29 | 2019-09-03 | 广东顺德诺恩工业技术有限公司 | A kind of injection molding machine pull rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171212 Effective date of abandoning: 20190903 |