CN2652643Y

CN2652643Y - Double crank link of injection mould machine closing mould device

Info

Publication number: CN2652643Y
Application number: CN 03210710
Authority: CN
Inventors: 舒行豪; 应拥军; 杜宁
Original assignee: 夏善海
Priority date: 2003-09-18
Filing date: 2003-09-18
Publication date: 2004-11-03
Anticipated expiration: 2013-09-18

Abstract

The utility model relates to a double-toggle connecting rod of injection molding machine. The upper and lower front mounted toolbar rod linked with two plates, the upper and lower back connecting rods linked with the rear plate, a front mounted toolbar rod and a back connecting rod are linked together through a large locking shaft, which are then connected with the upper and lower small connecting rods with the thrust block through a small locking shaft to be in the formation of an overall assembly. The front mounted toolbar rod is composed of a whole formed form the parallel and radial arrangement of two or more than two rods with through holes. The back connecting rod is composed of a whole formed form the parallel and radial arrangement of one or more than one rods with through holes. Moreover the length of the front mounted toolbar rod is larger than the back connecting rod length. Because the arrangement order of the front and back connecting rods in the prior connecting rod is changed, the quantity of the small connecting rods is reduced. Thus, the toggle mechanism is more compact with small parts, light weight and easy assembly. At the same time, the quantity of the stent installed on the rear plate is also reduced. thus, the torque of the connecting rod imposed on the rear plate is reduced. With small deformation of the rear plate and the stress reduction, the utility model is more suitable for precise moulds.

Description

The hyperbolic elbow connecting rod of injection machine mold closing mechanism

Technical field

The utility model relates to the critical piece in a kind of injection machine mold closing mechanism, can guarantee the hyperbolic elbow connecting rod of the injection machine mold closing mechanism that plastic forming dies can be locked effectively or open and use.

Background technique

The injection machine that shows commercially available and use improves coupling mechanism force for improving its integral rigidity, generally all adopts hyperbolic elbow linkage mechanism, die cylinder promotes thrust bearing, thereby the front and rear connecting rods in the double curved elbow mechanism is stretched under the effect of hydraulic oil, drive two plates and move forward compaction mold.For increasing coupling mechanism force, general hyperbolic elbow connecting rod, by by the upper and lower front rod that parallel bar constituted of two band through holes with by the upper and lower back link that constitutes of parallel bar of three band through holes, and front and rear connecting rods connects, and with the upper and lower small rod that is connected with thrust bearing band through hole, the integral body that is hinged to large and small lock shaft in through hole is formed, but there is certain drawback in this kind spread pattern, and tailgate is out of shape greatly by torsion.

Summary of the invention

Technical problem to be solved in the utility model is: the hyperbolic elbow connecting rod that a kind of injection machine mold closing mechanism is provided, change the conventional spread order of injection machine linkage mechanism, make injection moulding machine template stressed more even, thereby improve the quality and the manufacturing efficiency of die products, the use of precise forming mold preferably.

The technical scheme in the invention for solving the above technical problem is: the hyperbolic elbow connecting rod of injection machine mold closing mechanism, on being connected with two plates, following front rod be connected with tailgate, following back link and front rod and back link link into an integrated entity with big lock shaft, again with have thrust bearing on, following small rod constitutes with the integral body that little lock shaft connects into, described front rod is by the bar of band through hole more than 2 or 2, parallel, the integral body that is spaced constitutes, described back link is by the bar of corresponding band through hole more than 1 or 1, parallel, the integral body that is spaced constitutes, and front rod length is greater than back link length.

Compared with prior art, advantage of the present utility model: because of ordering with former connecting rod, by 2 of front rods, 3 of back links change over 3 of front rods, the arrangement that back link is 2, can make the quantity of small rod reduce half like this, make elbow-bar mechanism compacter, part is few, in light weight, easily assembling makes the also corresponding minimizing of the support number that is connected on the tailgate simultaneously, the power and the arm of force between the reaction force on the tailgate support that act on the tailgate of pull bar is shorter like this, make the suffered torsion of tailgate little, thereby the tailgate distortion is little, stress reduces, make injection moulding machine template stressed more even, improve working life.

Description of drawings

Fig. 1 is this practical structural representation;

Fig. 2 is user mode figure of the present utility model;

Fig. 3 is the plan view of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Front rod 8 has the bar of through hole by three two ends, parallel, the integral body that is spaced.

Back link 7 is by two bars that have three through holes, parallel, the integral body that is spaced.

Front rod can be made up of sheet bars such as 2,4,5 as required, and corresponding back link is made up of sheet bars such as 1,3,4, and promptly front rod 8 is than more than 71 of back links, and front rod length is greater than back link.

Tailgate 2 links together by four pull bars 10 with a plate 11, and four pull bars 10 pass two plates 9, and two plates 9 can be moved on pull bar.

Bracket holes on upper and lower back link 7 and the tailgate 2, bracket holes on upper and lower front rod 8 and two plates 9, back link 7 and front rod 8, hinged by the big lock shaft 3 in the through hole, the two ends of upper and lower small rod 6 and thrust bearing 4, back link 7 links into an integrated entity by little lock shaft 5, and constituting hyperbolic elbow connecting rod with tailgate 2, two plates 9 is the mold closing mechanism that arrange first three back two.

Die cylinder 1 is screwed on tailgate 2 during use, die cylinder 1 is under the hydraulic oil effect, promoting thrust bearing 4 moves forward, and the mobile small rod 6 that makes of thrust bearing 4 also moves forward, thereby back link 7 and front rod 8 in the double curved elbow mechanism are outwards stretched, drive two plates and move forward compaction mold.

Claims

1, a kind of hyperbolic elbow connecting rod of injection machine mold closing mechanism, on being connected with two plates (9), following front rod (8) be connected with tailgate (2), following back link (7), and front rod (8) links into an integrated entity with big lock shaft (3) with back link (7), again with have thrust bearing (4) on, following small rod (6) constitutes with the integral body that little lock shaft (5) connects into, it is characterized in that the bar of described front rod (8) by band through hole more than 2 or 2, parallel, the integral body that is spaced constitutes, described back link (7) is by the bar of corresponding band through hole more than 1 or 1, parallel, the integral body that is spaced constitutes, and front rod (8) length is greater than the length of back link (7).

2, hyperbolic elbow connecting rod according to claim 1 is characterized in that front rod (8) is made up of the bar of 3 two ends band through holes, and back link (7) is made up of 2 bars with three through holes.