CN201346836Y - Internal contracting brake device of two-plate injection molding machine - Google Patents

Abstract

The utility model discloses a brake device for a two-plate injection molding machine; the left slider on the left guide rod passes through the right slider through a connecting rod to connect with the left slider on the right guide rod, and the right slider The connecting rod passes through the left slider on the right guide rod to connect with its right slider, and the left and right sliders with stoppers are connected with the toggle mechanism composed of hinge rod and hinge seat; The cylinder body is respectively connected with the upper and lower hinge seats; the two sliders are located in the box body composed of the base plate and the baffle plate, and the base plate is fixed on the movable formwork. The two sliders are correspondingly provided with grooves corresponding to the annular grooves on the guide rods. Driven by the clutch cylinder, the two sliders of each clamping mechanism move radially to clamp the guide rods. The whole device has only one oil cylinder, which requires low control. When the toggle mechanism enters the self-locking state, the holding force is increased by the self-locking force, and the oil cylinder can be closed without providing energy.

Description

A brake device for a two-platen injection molding machine

technical field

The utility model relates to a guide rod lock device applied to two-plate injection molding machine equipment, in particular to a two-plate injection molding machine lock device which is fixed on a movable template and adopts a toggle mechanism to engage the movable template and the guide rod. gate device.

Background technique

At present, the general mold closing method of the two-platen injection molding machine is to quickly move the moving platen and the fixed platen close to each other through the quick-moving cylinder. Finally, the high-pressure mold clamping force is raised by the high-pressure mold clamping cylinder to lock the mold. It can be seen from this that how to effectively make the moving template and the guide rod cohere is the key link in the mold closing process of the two-platen injection molding machine. At present, the brake mechanism of the two-platen injection molding machine adopts a rotating guide rod or an insert located inside the template for coagulation, and also uses a separate common clamping device at each of the four guide rods for cohesion. However, the rotating guide rod or rotating insert has the disadvantages of higher machining accuracy and assembly accuracy, and greater mechanical wear; a brake device is provided for each of the four guide rods, which overcomes the shortcomings of the above-mentioned rotary brake device , but its control requirements are relatively high, and the four cohesive oil cylinders must always provide enough pressure after cohesion, which requires a lot of energy.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and to provide a brake device for a two-platen injection molding machine that works stably and requires less control and energy.

The technical scheme adopted by the utility model to solve the technical problem is: a brake device for a two-platen injection molding machine, which includes a movable template, a first clamping mechanism, a hinge rod, a lower hinge seat, a second clamping mechanism, and a clamping oil cylinder The body, the piston rod of the embracing oil cylinder, the upper hinge seat, the pull rod and the guide rod; wherein the first holding mechanism includes a first baffle plate, a first upper bottom plate, a first outer slider, a first inner slider, and a first lower bottom plate; The second holding mechanism includes a second baffle plate, a second upper bottom plate, a second outer slider, a second inner slider, and a second lower bottom plate; The cylinder body is connected with the lower hinge seat, the upper hinge seat and two hinge rods form a toggle mechanism which is respectively hinged with the first holding mechanism and the second holding mechanism above the movable template, and the lower hinge seat is also connected with the two The toggle mechanism composed of hinge rods is respectively hinged with the first and second holding mechanisms under the moving template, and at the same time, the upper and lower first holding mechanisms and the second holding mechanisms are connected alternately through four tie rods.

The beneficial effect of the utility model is that the utility model adopts a linear motion clamping device, and when the slider slides along the pull rod, it only needs to overcome its sliding friction force; Then the left and right sliders are driven to move towards each other through the toggle mechanism. When the toggle mechanism enters the self-locking state, the holding mechanism also clamps the guide rod at the same time. At this time, the oil pressure on the holding cylinder can be removed, and the pressure is no longer enough. , relying on the self-locking force of the toggle mechanism to ensure the effective work of the holding device, so energy can be saved, and only one hydraulic cylinder is normally controlled, and its control requirements are relatively low.

Description of drawings

Fig. 1 is the structural representation of the brake device of the two-platen injection molding machine of the present utility model;

Fig. 2 is a sectional view of the holding device of the brake device of the second plate injection molding machine of the present invention, wherein (a) is the main sectional view, and (b) is the left sectional view;

Fig. 3 is a partial view of the brake device of the second-platen injection molding machine of the present invention, wherein (a) is a partial view of the brake state, and (b) is a partial view of the brake state;

In the figure, the moving template 1, the first clamping mechanism 2, the hinge rod 3, the lower hinge seat 4, the second clamping mechanism 5, the clutch cylinder body 6, the cylinder piston rod 7, the hinge seat 8, the pull rod 9, the guide Rod 10, first baffle plate 21, first upper base plate 22, first outer slider 23, second inner slider 24, first lower base plate 25, second baffle plate 51, second upper base plate 52, second outer The slider 53 , the second inner slider 54 , and the second lower bottom plate 55 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings, and the purpose and effect of the utility model will become more obvious.

Referring to Figures 1 to 3, the brake device of the two-platen injection molding machine of the present invention includes a movable template 1, a first clamping mechanism 2, a hinge rod 3, a lower hinge seat 4, a second clamping mechanism 5, and a clutch cylinder Body 6, clutch cylinder piston rod 7, upper hinge seat 8, pull rod 9 and guide rod 10, wherein the first clamping mechanism 2 includes a first baffle plate 21, a first upper bottom plate 22, a first outer slider 23, a first Inner slider 2 24, the first lower base plate 25; the second holding mechanism 5 includes a second baffle plate 51, a second upper base plate 52, a second outer slider 53, a second inner slider 54, and a second lower base plate 55 , the holding mechanism is diagonally symmetrically distributed.

As shown in Figure 1, the piston rod 7 of the cohesive oil cylinder is connected to the upper hinge seat 8, the oil cylinder body 6 is connected to the lower hinge seat 4, and the upper hinge seat 8 and two hinge rods 3 form a toggle mechanism respectively connected to the top of the movable template 1. The first clamping mechanism 2 and the second clamping mechanism 5 are hinged, and the lower hinge seat 4 is also formed with two hinge rods 3. The 5 mechanisms are hinged, and the upper and lower first holding mechanisms 2 and the second holding mechanisms 5 are connected alternately through four pull rods 9 respectively.

As shown in Figure 2, the first outer slider 23 and the first inner slider 24 in the first gripping mechanism 2 are located in the box formed by the first upper bottom plate 22, the first lower bottom plate 25 and the four first baffle plates 21. In the body, the box is fixed on the moving template 1 through the first upper bottom plate 22 and the first lower bottom plate 25, and the first baffle plate 21 acts as a limiter for the stroke of the slider; the first outer slider 23 and the first inner slider The block 24 is respectively provided with concave sawtooth patterns matching with the convex sawtooth patterns on the guide rod 10. Under the drive of the cohesion oil cylinder, the two slide blocks are promoted to move toward or away from each other, and the guide rod 10 is locked or opened. The same is true for the structural composition of the second clasping mechanism 5 .

As shown in Figure 3, the first holding mechanism 2 and the second holding mechanism 5 are respectively hinged with the hinge rod 3 through the first inner slide block 24 and the second inner slide block 54; Among the four pull rods 9 of the second holding mechanism 5, the two pull rods 9 near the side of the oil cylinder pass through the second inner slider 54 to connect the first inner slider 24 and the second outer slider 53; The two pull rods on the other side pass through the first inner slider 24 to connect the first outer slider 23 and the second inner slider 54 .

As shown in Figures 1 to 3, the new working process of this example is as follows: when clamping the mold, the fast mold clamping cylinder first drives the moving platen 10 to move forward quickly, and when the moving platen 10 reaches the position set by the system, the system controls the brake device Start to hold the brake, and engage the cylinder to generate action. The cylinder body 6 and the piston rod 7 respectively drive the upper hinge seat 8 and the lower hinge seat 4 to move towards each other. Which hinge seat moves first, the movement speed is faster, and the self-locking state is reached first depends on Due to the relevant frictional force, when the hinge bar 3 of one toggle mechanism is close to the first inner slider 24 and the second inner slider 54, it enters the self-locking state, and then the other toggle mechanism continues Movement, the hinge seat pushes the two sliders to move relative to each other through the hinge rod 3. Similarly, which slider contacts the guide rod first depends on the sliding friction force it receives, and then until the upper hinge seat 8 and the lower hinge seat 4 enter into self-locking At this time, the two sliders hold the guide rod 5 tightly. After the corresponding sensor detects that the brake device is engaged, it sends a signal to control the oil cylinder to stop the oil supply. Since the toggle mechanism enters the self-locking state, the holding force can be maintained by the self-locking The force is lifted enough, so as long as the oil inlet valve of the holding cylinder is closed, there is no need to lift enough energy, and the process of holding the brake is completed. When opening the mold, the system controls the reverse movement of the clutching cylinder, pushes the slide to move opposite to each other, the clamping mechanism releases the guide rod 10, and then the fast mold-moving cylinder drives the movable template 1 to move.

Claims (3)

1. brake sticking device of double-plate injection moulding machine, it comprises moving platen (1), first hold-fast body (2), toggle (3), free bearing (4) down, second hold-fast body (5), obvolvent cylinder body (6), obvolvent oil cylinder piston bar (7), last free bearing (8), pull bar (9) and guide rod (10); Wherein first hold-fast body (2) comprises first baffle plate (21), first upper plate (22), first outer slide (23), first inner slide (24), first lower shoe (25); Second hold-fast body (5) comprises second baffle (51), second upper plate (52), second outer slide (53), second inner slide (54), second lower shoe (55); It is characterized in that: hold-fast body distributes diagonally, the piston rod of obvolvent oil cylinder (7) is connected with last free bearing (8), cylinder body (6) is connected with following free bearing (4), last free bearing (8) and two toggles (3) are formed elbow-bar mechanism and are hinged with first hold-fast body (2) and second hold-fast body (5) of moving platen (1) top respectively, following free bearing (4) is also formed elbow-bar mechanism with two toggles (3), and to hold (5) mechanism tightly hinged with first hold-fast body (2) and second of moving platen (1) below respectively, and first hold-fast body (2) up and down interlocks by four pull bars (9) respectively with second hold-fast body (5) again and links to each other simultaneously.

2. brake sticking device of double-plate injection moulding machine according to claim 1, it is characterized in that: first outer slide (23) in described first hold-fast body (2) and first inner slide (24) are positioned at first upper plate (22), first lower shoe (25) and four first baffle plates (21) institute composition casing, this casing is fixed on the moving platen (1) by first upper plate (22) and first lower shoe (25), and first baffle plate (21) plays position-limiting action to the stroke of slide block; Have the recessed hackle mark that matches with guide rod (10) epirelief hackle mark on first outer slide (23) and first inner slide (24); Structure for second hold-fast body (5) is formed in like manner.

3. brake sticking device of double-plate injection moulding machine according to claim 1 is characterized in that: described first hold-fast body (2) and second hold-fast body (5) are hinged with toggle (3) by first inner slide (24) and second inner slide (54) respectively; Connect simultaneously in four pull bars (9) of first hold-fast body (2) and second hold-fast body (5), wherein two pull bars (9) near obvolvent oil cylinder one side pass second inner slide (54), connect to live first inner slide (24) and second outer slide (53); Two pull bars of an in like manner other side pass first inner slide (24), connect to live first outer slide (23) and second inner slide (54).

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