JPH0280807A - Link type tightening mechanism - Google Patents

Link type tightening mechanism

Info

Publication number
JPH0280807A
JPH0280807A JP22833188A JP22833188A JPH0280807A JP H0280807 A JPH0280807 A JP H0280807A JP 22833188 A JP22833188 A JP 22833188A JP 22833188 A JP22833188 A JP 22833188A JP H0280807 A JPH0280807 A JP H0280807A
Authority
JP
Japan
Prior art keywords
link
pin
link pin
links
mold clamping
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.)
Pending
Application number
JP22833188A
Other languages
Japanese (ja)
Inventor
Masato Yamamura
正人 山村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to JP22833188A priority Critical patent/JPH0280807A/en
Publication of JPH0280807A publication Critical patent/JPH0280807A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00Pivots; Pivotal connections
    • F16C11/04Pivotal connections
    • F16C11/045Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin

Landscapes

  • Pivots And Pivotal Connections (AREA)

Abstract

PURPOSE:To give easy tight-fit to a link pin by tightly-fitting and securing both the ends of the link pin by which one link is connected to the other one so that it can make a free rotation. CONSTITUTION:A toggle mechanism 2 serving as a link type tightening mechanism has a link 5 integrated with a rear platen 3 connected to a movable link 6 through a link pin 9. Both the ends of the link pin 9 are tightly fitted to the links 5 positioned on both sides and the link 6 is arranged so it can move with regard to the link pin 9 through a bush 12. Assembling these parts is performed by aligning the pin holes through the link 6 arranged between links 5 and fitting the link 9 whose diameter is reduced by means of a cooling process with liquid nitrogen from one side. The ink pin 9 is a fixed beam both ends of which are integrated wit the links 5, 6 by a tight fit, and the link 6 comes in uniform contact with the surface of the link pin 9 within the distance (l) between the inner edges of the link 5 to transmit tightening force F by its whole strength and decrease maximum stress. This permits the use of a relatively thin link pin and provides reduction in weight and cost.

Description

【発明の詳細な説明】 産業上の利用分野 この発明はトグル式、クランク式などのリンク式型締機
構に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a link type mold clamping mechanism such as a toggle type or crank type.

従来技術 リンク式型締機構の関節は、一方のリンクに他方のリン
クがリンクピンを介して回動自在に連結されている。リ
ンクピンは通常一方のリンクに両端部をすきま嵌めによ
り嵌合し、両端面と該リンクとに渡りキーを取付けて回
り止めとしている。
In a conventional link type mold clamping mechanism, one link is rotatably connected to the other link via a link pin. A link pin usually has both ends fitted into one link with a clearance fit, and a key is attached across both end faces and the link to prevent rotation.

すきま嵌めによるリンクピンは数句は易い利点があるが
、両端部は隙間の存在により、型締力(F)に関し前記
一方のリンクの内側縁を支点とした支持ぼりであり、最
大曲げモーメント(M)が大きい。
A link pin with a clearance fit has the advantage of being easy to use, but due to the presence of a gap at both ends, the mold clamping force (F) is supported by the inner edge of one link as a fulcrum, and the maximum bending moment ( M) is large.

すなわち第4図において、一方のリンクa、aの孔にリ
ンクピンbの両端がすきま嵌めで嵌合され、一方のリン
クの内側縁S1,62間の距離を(1)としたと、前記
内側縁s1.s2は支点で、また、他方のリンクCはリ
ンクピンbと支点s1゜82間で均等に接し、リンクピ
ンb側から見て均等荷重(単位長さ当たり荷重Wとして
F=Wjりであるから、最大曲げモーメント(M)はM
= FA /8 である。
That is, in FIG. 4, if both ends of link pin b are fitted into the holes of one link a and a with a clearance fit, and the distance between the inner edges S1 and 62 of one link is (1), then the inner side Rim s1. s2 is the fulcrum, and the other link C is in even contact between the link pin b and the fulcrum s1゜82, and the load is uniform when viewed from the link pin b side (as the load W per unit length is F = Wj) , the maximum bending moment (M) is M
=FA/8.

そのため、この曲げモーメン1〜(M)による曲げ応力
(σ)を受けても折れないような充分に太いリンクピン
を必要とし、高価、かつ、型締部の重量が大きくなる難
点がある。
Therefore, a sufficiently thick link pin is required so that it will not break even when subjected to the bending stress (σ) due to the bending moment 1 to (M), which is disadvantageous in that it is expensive and the weight of the mold clamping portion becomes large.

発明が解決しようとした課題 この発明は、同じ型締力に対して、比較的細いリンクピ
ンを使用できるリンク式型締機構の提供、および前記リ
ンクピンに締まり嵌めを容易とした構造を設けたリンク
式型締機構の提供を課題とした。
Problems to be Solved by the Invention The present invention provides a link type mold clamping mechanism that can use a relatively thin link pin for the same mold clamping force, and provides the link pin with a structure that facilitates tight fitting. The challenge was to provide a link type mold clamping mechanism.

課題を解決するための手段 リンクピンの両端を一方のリンクに締まり嵌めで固定す
る。
Means for Solving the Problem Both ends of a link pin are fixed to one link with an interference fit.

また、リンクピンに小径の貫通孔を軸方向に形成する。Further, a small diameter through hole is formed in the link pin in the axial direction.

作  用 リンクピンの両端を締まり嵌めで取付ける構成はリンク
ピンにおける最大曲げモーメント(M)を小さくする。
Function: The configuration in which both ends of the link pin are attached with an interference fit reduces the maximum bending moment (M) in the link pin.

リンクピンにおける小径の貫通孔は組みつりだ状態でリ
ンクピンのみの冷却を可能とした。
The small diameter through holes in the link pins made it possible to cool only the link pins in the assembled state.

実施例 第2図はトグル式の型締装置1を示し、リンク式型締機
構としてのトグル機構2が、リアプラテン3と可動プラ
テン4間に構成されている。1〜グル機構2の第1(リ
アプラテン側)、第2、第3(可動プラテン側)のリン
ク5,6.7はそれぞれリンクピン9,10.11で連
結され型締力(F)を伝達する。なお、この様な1〜グ
ル機構自体は周知である。
Embodiment FIG. 2 shows a toggle type mold clamping device 1, in which a toggle mechanism 2 as a link type mold clamping mechanism is arranged between a rear platen 3 and a movable platen 4. The first (rear platen side), second, and third (movable platen side) links 5, 6.7 of the gluer mechanisms 1 to 2 are connected by link pins 9, 10.11, respectively, and transmit mold clamping force (F). do. Incidentally, such a one-to-one mechanism itself is well known.

リアプラアン3ど一体とされ固定のリンク5(一方のリ
ンク)と可動のリンク6(他方のリンク)とはリンクピ
ン9により結合されている。リンクピン9の両端部は両
側に位置したリンク5゜5に締まり嵌めで固定され、リ
ンク5.5間に位置するリンク6.6はリンクピン9に
対し、ブツシユ12(第1図)を介して回動可能どされ
ている。
A fixed link 5 (one link) and a movable link 6 (other link), which are integral with the rear phan 3, are connected by a link pin 9. Both ends of the link pin 9 are fixed by interference fit to the links 5.5 located on both sides, and the link 6.6 located between the links 5.5 is connected to the link pin 9 through a bush 12 (Fig. 1). It can be rotated.

これらの組みつりはリンク5,5間にリンク6を介在さ
せて、これらリンクのピン孔を整列させてJ3ぎ、一方
側から、液体窒素で冷却して縮径したリンク9を嵌挿す
ることにより行う。
To assemble these, link 6 is interposed between links 5, 5, the pin holes of these links are aligned, and link 9, whose diameter has been reduced by cooling with liquid nitrogen, is inserted from one side. This is done by

この様に構成したリンク5、リンク6およびリンクピン
9からなる構造(ま第1図のように模式化でき、この構
造について型締力(F)による曲げ応力を考察すると、
リンクピン9は両端部が締より嵌めによりリンク5.6
と一体に固定された固定ぼりであり、前記のようにリン
ク5.5の内側縁間の距離を(1)、リンク6はこの間
で均等にリンクピン9の表面に接し均等に全体で型締力
(F)が伝達されるものとしたど、 M=Fj!/12 となる。
The structure consisting of the links 5, 6, and link pins 9 constructed in this way (which can be schematically illustrated as shown in Fig. 1, and considering the bending stress due to the mold clamping force (F) for this structure,
The link pin 9 is connected to the link 5.6 by tightening the both ends of the link pin 9.
As mentioned above, the distance between the inner edges of the links 5 and 5 is (1), and the links 6 touch the surface of the link pins 9 evenly between them, and the mold is clamped evenly as a whole. Assuming that force (F) is transmitted, M=Fj! /12.

このような解析は伯のリンクピン10.11に関しても
同じである。
Such an analysis is the same for Haku's link pin 10.11.

一方、最大曲げモーメント(M)による最大応力(σ)
はσ−M/Z・・・・・・(Z−断面係数、断面が直径
dの円:πd/32)であるから、前記したすきま嵌め
における最大応力をσ1、締まり嵌めにおける最大応力
をσ2としたと、 σ1:σ2−(11/8)/7 : (Fj!/12)/Z −3:2 であるから、締まり嵌めとしたことにより、最大応力が
2/3に減少する。
On the other hand, the maximum stress (σ) due to the maximum bending moment (M)
is σ-M/Z (Z-section modulus, circle with diameter d in cross section: πd/32), so the maximum stress in the above-mentioned clearance fit is σ1, and the maximum stress in an interference fit is σ2 Then, σ1:σ2−(11/8)/7 : (Fj!/12)/Z −3:2 Therefore, by using an interference fit, the maximum stress is reduced to 2/3.

以上はクランクの関節部におけるピンでも同じである。The above also applies to the pins in the crank joints.

第1図において符号13はリンクピン9(10゜11)
の軸芯に沿って設(プた小径の貫通孔であり、ブツシユ
の交換時など、リンクピン9を取外す時に、この孔に液
体窒素などの冷媒を流通さぜるためのものである。
In Fig. 1, numeral 13 is link pin 9 (10°11)
This is a small diameter through hole provided along the axis of the bushing, and is used to circulate a refrigerant such as liquid nitrogen through this hole when the link pin 9 is removed, such as when replacing the bush.

発明の効果 同一の型締)〕に関して、従来より比較的細いリンクピ
ンを使用でき、軽量化やコストダウンを計ることができ
る。
Effects of the Invention Regarding the same mold clamping), a link pin that is comparatively thinner than before can be used, and weight and cost reductions can be achieved.

また、作動中のりンクピンによる干渉域が縮小される。Furthermore, the area of interference caused by the link pin during operation is reduced.

貫通孔を設けたリンクピンは組みつけたままでこのピン
のみを縮径させることができ、締まり嵌めにかかわらず
、簡単に取外すことができる。
The diameter of the link pin provided with the through hole can be reduced while it is still assembled, and it can be easily removed regardless of whether it is an interference fit.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は断面にて示す平面図、第2図は正面図、第3図
は平面図、第4図は断面にて示す平面図である。 1・・・型締装置、2・・・トグル機構、3・・・リア
プラテン、4・・・可動プラテン、5・・・第1リンク
、6・・・第2リンク、7・・・第3リンク、8・・・
第4リンク、9,10.11・・・リンクピン、12・
・・ブツシコ、13・・・貫通孔。
1 is a plan view showing a section, FIG. 2 is a front view, FIG. 3 is a plan view, and FIG. 4 is a plan view showing a section. DESCRIPTION OF SYMBOLS 1... Mold clamping device, 2... Toggle mechanism, 3... Rear platen, 4... Movable platen, 5... First link, 6... Second link, 7... Third Link, 8...
4th link, 9, 10. 11... Link pin, 12.
...Buzz, 13...Through hole.

Claims (2)

【特許請求の範囲】[Claims] (1)一方のリンクに他方のリンクを回動自在に結合す
るリンクピンの両端が、前記一方のリンクに締まり嵌め
で固定されていることを特徴としたリンク式型締機構。
(1) A link type mold clamping mechanism characterized in that both ends of a link pin that rotatably connects one link to the other link are fixed to the one link by interference fit.
(2)リンクピンに小径の貫通孔が軸方向に形成されて
いることを特徴とした請求項1に記載のリンク式型締機
構。
(2) The link type mold clamping mechanism according to claim 1, wherein a small diameter through hole is formed in the link pin in the axial direction.
JP22833188A 1988-09-14 1988-09-14 Link type tightening mechanism Pending JPH0280807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22833188A JPH0280807A (en) 1988-09-14 1988-09-14 Link type tightening mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22833188A JPH0280807A (en) 1988-09-14 1988-09-14 Link type tightening mechanism

Publications (1)

Publication Number Publication Date
JPH0280807A true JPH0280807A (en) 1990-03-20

Family

ID=16874781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22833188A Pending JPH0280807A (en) 1988-09-14 1988-09-14 Link type tightening mechanism

Country Status (1)

Country Link
JP (1) JPH0280807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016022658A (en) * 2014-07-18 2016-02-08 東芝機械株式会社 Switchgear, molding device, and method for use of switchgear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016022658A (en) * 2014-07-18 2016-02-08 東芝機械株式会社 Switchgear, molding device, and method for use of switchgear

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