CN103660143B - Injection machine drag link mechanism - Google Patents
Injection machine drag link mechanism Download PDFInfo
- Publication number
- CN103660143B CN103660143B CN201310691377.1A CN201310691377A CN103660143B CN 103660143 B CN103660143 B CN 103660143B CN 201310691377 A CN201310691377 A CN 201310691377A CN 103660143 B CN103660143 B CN 103660143B
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- Prior art keywords
- nut
- section
- pull bar
- shaft part
- spider
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1742—Mounting of moulds; Mould supports
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Injection machine drag link mechanism, comprise injection moulding head template, pull bar and nut, pull bar passes head mould plate and is fixed by nut, pull bar described in it comprises thread segment, a shaft part, described nut comprises internal thread, spider section, when the thread segment formed when nut and pull bar are fixed screws, a shaft part and spider section matched in clearance form supporting section.The present invention protects pull rod screw section by the spider section on nut to the radial constraint that pull bar props up shaft part, avoids the bending of pull rod screw section; And utilizing the location fit of spider section and fulcrum, the bending of pull rod screw section is obviously protected.Also utilize injection moulding head form tie hole aperture spider and pull-rod nut to prop up the location fit of shaft part outward, on the impact that ring surface is stressed when weakening template deformation, indirectly protect thread segment.Also compensating groove is set, makes the position that pull bar is bending controlled flexibly.
Description
Technical field
The present invention relates to the drag link mechanism of injection machine, particularly improve the anti-bending ability of pull rod screw section.
Background technology
Drag link mechanism is the key mechanism of supporting mould and miscellaneous part, and it comprises pull bar and nut, and pull bar makes pull bar locate by the screw thread on it and nut screw connection.Existing injection machine drag link mechanism, pull bar and nut are provide tensile load by the mode of screw-threaded engagement substantially, axial load in structure is all born by the screw thread of pull bar, and pull rod screw section because of the unavoidable stress of the reason such as material, processing concentrate, axial load on each button thread is distributed uneven again, is particularly applied to the shearing force of pull rod screw part during template flexural deformation, very badly, result causes pull bar very fast tired, loses efficacy eventually to fracture.
Summary of the invention
The technical problem to be solved in the present invention be overcome prior art above-mentioned deficiency and a kind of injection machine drag link mechanism is provided, thread segment when making injection machine pull bar and nut screw connection on pull bar is protected, and is not easy to be bent.
It is as follows that the present invention solves the problems of the technologies described above adopted technical scheme:
For convenience of explanation of the present invention, this region passive of matching with a certain circular hole in cylindrical shape part is called a shaft part, and be enclosed within a shaft part with prop up circular hole the preceding paragraph that shaft part coordinates and be called spider section, the two is combined together to form supporting section.
During as pull bar and nut screw connection, the sub-fraction in the forward and backward region of pull rod screw section is called a shaft part, and the forward and backward bore region of nut inner thread section and pull bar prop up the part that shaft part coordinates and be called spider section.
In like manner, when nut coordinates with head plate, right overhead during plate holding nut, on head plate, one section of holding nut is called a shaft part, that section coordinated with a shaft part in corresponding nut is spider section, or when nut enters plate hole, the supporting section that nut outer round surface is arranged is a shaft part, and corresponding head plate tie rod hole and nut prop up that section that shaft part matches and be spider section.
Injection machine drag link mechanism, comprise injection moulding head template, pull bar and nut, pull bar passes head mould plate and is fixed by nut, it is characterized in that: described pull bar comprises thread segment, a shaft part, described nut comprises internal thread, spider section, after the thread segment of nut and pull bar screws, spider section and fulcrum section matched in clearance form supporting section.
Better, above-mentioned matched in clearance is location fit or is slidably matched.
Better, above-mentioned spider section and the intersegmental gap of fulcrum better less, the gap effect that goes to zero is better, because fulcrum can be made so to be better subject to spider constraint thus to make thread segment be tending towards minimum by shearing, effectively protects screw thread.
Better, above-mentioned supporting section is respectively in the front and back of threaded engagement section.
Better, above-mentioned nut arranged outside props up shaft part, and corresponding head plate arranges spider section, and when pull bar is fixed to head mould plate by nut, nut props up shaft part and head mould plate spider section forms supporting section.
Better, arrange spider section inside nut, corresponding head plate arranges a shaft part, and when pull bar is fixed to head mould plate by nut, nut spider section and head mould plate prop up shaft part and form supporting section.
Better, pull bar also arranges compensating groove, and shape and position controlled flexibly.
The form of thread of above-mentioned thread segment is not restricted, and can be the screw thread of any shapes such as triangle thread, rectangular thread, trapezoidal thread, saw-tooth thread or circular thread.
Above-mentioned pull bar between shaft part and thread segment, open escape, the shape of escape, the degree of depth and width with reference to GB, but can not do strict restriction.
The material of above-mentioned pull bar and nut is not restricted, and can be any type of material.
The invention has the advantages that: by the spider section on nut, pull rod screw section is protected to the radial constraint that pull bar props up shaft part, avoid or weaken the bending of pull rod screw section; By the location fit of spider section and fulcrum, the bending of pull rod screw section is obviously protected.Also utilize injection moulding head form tie hole spider section and pull-rod nut to prop up the location fit of shaft part outward, on the impact that ring surface is stressed when weakening template deformation, indirectly protect thread segment.Also be provided with compensating groove, the position making pull bar bending and degree controlled flexibly.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention pull bar.
Fig. 2 is the structural representation of embodiment of the present invention nut.
Fig. 3 is the structural representation of embodiment of the present invention head mould plate.
Fig. 4 is the structural representation of embodiment of the present invention injection machine drag link mechanism.
Fig. 5 is the structural representation of another embodiment of drag link mechanism of the present invention.
Fig. 6 is the structural representation of the another embodiment of drag link mechanism of the present invention.
Fig. 7 is the structural representation of the another embodiment of drag link mechanism of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described.
As shown in Figure 1, injection machine pull bar 1 head arranges thread segment 19, and the forward and backward region adjacent with thread segment 19 arranges a shaft part 17 and a shaft part 18.
Between above-mentioned shaft part 17 and thread segment 19, escape 20 is also set, so that processing.
Above-mentioned shaft part 17, shaft part 18, escape 20 and thread segment 19 are coaxial.
Above-mentioned pull bar 1 also arranges compensating groove 3, controls the bending of pull bar 1 by profile and position.
As shown in Figure 2, nut inner thread section 12 arranges spider section 11 above, and nut inner thread section 12 arranges spider section 16 below.
Between above-mentioned spider section 11 and internal thread segment 12, escape 10 is set, escape 13 is set between spider section 16 and internal thread segment 12, so that processing.
Above-mentioned spider 11, spider 16, escape 10, escape 13 and thread segment 12 are coaxial.
Also arrange a shaft part 15 outside above-mentioned nut one end, shaft part 15 one end and nut side form ring surface 14, and this ring surface 14 hardens when closing with head mould and is close on head mould plate.
As shown in Figure 3, head mould plate 2 is arranged tie rod hole 21, also arrange head mould plate spider section 22, this spider section 22 coordinates with the lateral branch shaft part 15 on nut and forms supporting section.
As shown in Figure 4, the drag link mechanism of injection machine, it comprises pull bar 1, head mould plate 2, pull-rod nut 8, and pull bar 1 is fixed by pull-rod nut 8 through after the tie rod hole 22 in head mould plate 2.
When above-mentioned pull bar and nut are fixed, nut inner thread and pull bar external screw thread screw and form threaded engagement section 7 and link together securely, form spider and fulcrum faying face 6 at pull bar and nut thread section 7 front end by a shaft part of pull bar and the spider section of nut, thus retrained the bending of propping up shaft part to prevent to inner threaded engagement section 7 by spider section.
Above-mentioned pull bar and the nut thread section of screwing 7 rear end form spider and fulcrum faying face 9 by a shaft part of pull bar and the spider section of nut, thus are retrained by spider section and prop up shaft part and protect threaded engagement section 7 better.
Above-mentioned pull bar also arranges compensating groove 3, and to weaken better, the load that transfer threaded engagement section 7, faying face 6 and faying face 9 are subject to, prevents the threaded engagement section of pull bar from concentrating stressed and destroying.
As shown in Figure 1, Figure 2, Figure 4 shows; pull-rod nut 8 outer surface arranges the spider 22 of shaft part 15 and ring surface 14 and head mould plate 2 and tie rod hole end face and coordinates and form annular faying face 5; this cooperation easily can be inserted in nut and be advisable; mainly weaken impact stressed on ring surface 14 when template 2 is out of shape, indirectly protect thread segment.
Above-mentioned spider and fulcrum take minim gap location fit or small―gap suture to be slidably matched, and gap is little as far as possible and ensure that nut freely can screw in back-out.
Above-mentioned drag link mechanism also has various embodiment, as shown in Fig. 5, Fig. 6, Fig. 7.
Fig. 5 is another embodiment, and it is compared with Fig. 3, only reduces the spider between a pull bar and head plate and fulcrum faying face 4, also can meet the demands when condition is not too strict.
Fig. 6 is another embodiment, and it is compared with Fig. 3, the spider between pull bar and head plate and fulcrum faying face 4 setting position is changed, and will prop up shaft part and be arranged on a plate, spider section is arranged on nut, to be applicable to various different actual needs.
Fig. 7 is another embodiment, and it is compared with Fig. 3, the relation between head plate and nut is changed, mutually do not support, all the other are constant, and owing to possessing fulcrum, a nested structure between pull bar and nut, anti-bending effect still can be played in the nut location therefore in drag link mechanism.
Claims (7)
1. injection machine drag link mechanism, comprise injection moulding head template, pull bar and nut, pull bar passes head mould plate and is fixed by nut, it is characterized in that: described pull bar comprises thread segment, a shaft part, described nut comprises internal thread, spider section and props up shaft part outward, after the thread segment of nut and pull bar screws, spider section and fulcrum section matched in clearance form supporting section.
2. injection machine drag link mechanism as claimed in claim 1, is characterized in that: described matched in clearance is location fit or is slidably matched.
3. injection machine drag link mechanism as claimed in claim 1 or 2, is characterized in that: described supporting section is respectively in the front and back of threaded engagement section.
4. injection machine drag link mechanism as claimed in claim 1 or 2, it is characterized in that: described nut arranged outside props up shaft part, corresponding head mould plate tie rod hole arranges spider section, and when pull bar is fixed to head mould plate by nut, nut props up shaft part and head mould plate spider section forms supporting section.
5. injection machine drag link mechanism as claimed in claim 1, it is characterized in that: forward and backward two regions of described nut inner thread arrange spider section, on corresponding pull bar, forward and backward two regions of external thread section arrange a shaft part, when pull bar is fixed to head mould plate by nut, nut spider section and head mould plate prop up the corresponding formation supporting section of shaft part.
6. injection machine drag link mechanism as claimed in claim 1, is characterized in that: described pull bar also arranges variable compensating groove.
7. injection machine drag link mechanism as claimed in claim 1, is characterized in that: described pull bar props up between shaft part and thread segment and also arranges escape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310691377.1A CN103660143B (en) | 2013-12-17 | 2013-12-17 | Injection machine drag link mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310691377.1A CN103660143B (en) | 2013-12-17 | 2013-12-17 | Injection machine drag link mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103660143A CN103660143A (en) | 2014-03-26 |
| CN103660143B true CN103660143B (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310691377.1A Active CN103660143B (en) | 2013-12-17 | 2013-12-17 | Injection machine drag link mechanism |
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| CN (1) | CN103660143B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002349529A (en) * | 2001-05-31 | 2002-12-04 | Toshiba Corp | Jointing device |
| JP3976691B2 (en) * | 2003-02-18 | 2007-09-19 | 東洋機械金属株式会社 | Injection device for electric injection molding machine |
| CN201535287U (en) * | 2009-08-25 | 2010-07-28 | 鞍钢股份有限公司 | Bending moment resistant hydraulic cylinder end cover |
| CN202213128U (en) * | 2011-09-14 | 2012-05-09 | 宁波创基机械有限公司 | Tailboard protective component of plastic injection molding machine |
| CN103057065A (en) * | 2012-11-30 | 2013-04-24 | 海天塑机集团有限公司 | Pull rod mechanism of injection molding machine |
| CN203697373U (en) * | 2013-12-17 | 2014-07-09 | 海天塑机集团有限公司 | Drawbar mechanism of injection molding machine |
-
2013
- 2013-12-17 CN CN201310691377.1A patent/CN103660143B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002349529A (en) * | 2001-05-31 | 2002-12-04 | Toshiba Corp | Jointing device |
| JP3976691B2 (en) * | 2003-02-18 | 2007-09-19 | 東洋機械金属株式会社 | Injection device for electric injection molding machine |
| CN201535287U (en) * | 2009-08-25 | 2010-07-28 | 鞍钢股份有限公司 | Bending moment resistant hydraulic cylinder end cover |
| CN202213128U (en) * | 2011-09-14 | 2012-05-09 | 宁波创基机械有限公司 | Tailboard protective component of plastic injection molding machine |
| CN103057065A (en) * | 2012-11-30 | 2013-04-24 | 海天塑机集团有限公司 | Pull rod mechanism of injection molding machine |
| CN203697373U (en) * | 2013-12-17 | 2014-07-09 | 海天塑机集团有限公司 | Drawbar mechanism of injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103660143A (en) | 2014-03-26 |
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