JPH0132052B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a vertical injection molding machine in which a plasticizing cylinder can be easily attached and detached from an injection cylinder.

"Prior Art" An injection molding machine has a plasticizing cylinder removably connected to an injection cylinder. In particular, in a vertical injection molding machine, the plasticizing cylinder is connected to the injection cylinder in a removable manner. Assembling the cylinders together or removing and disassembling the plasticizing cylinder from the injection cylinder is a heavy work that involves considerable danger.

This will be explained based on FIGS. 5 to 7.

7a to 7f illustrate the work order when installing the plasticizing cylinder of a vertical injection molding machine. First, the plasticizing cylinder 2 is attached to the crane 10.
lift it up and bring it close to injection cylinder 1. (Figure a) Next, the tip 2a of the plasticizing cylinder 2 is manually moved to the upper part of the slotted hole 8 of the fixed platen 7, as shown by arrow B. (Figure b) Next, lower the crane 10 and remove the tip 2a of the plasticizing cylinder 2.
is placed on the slotted hole 8. (Figure c) At this time, it is necessary to manually support the base portion 2b of the plasticizing cylinder 2 so that it does not fall.

Next, while lowering the crane 10 further, the base portion 2b of the plasticizing cylinder 2 is pushed, and the cylinder 2 is held vertically directly below the injection cylinder 1. (D in the same figure) Next, the screw 3 housed in the plasticizing cylinder 2 is pulled upward and connected to the piston 9 in the injection cylinder 1. (e in the same figure) Finally, as shown in f in the same figure, the operation switch (not shown) is operated to gradually lower the injection cylinder 1 using hydraulic pressure to bring it close to the plasticizing cylinder 2, and the bolt 12 (the second (see figure 5), both cylinders 1,
2 is connected and fixed, and the connection between the two is completed.

The procedure for removing and disassembling the plasticizing cylinder is the reverse of this procedure.

In this case, the work has the following difficulties:

(b) This work requires a worker to operate the crane 10 and another worker to support and move the plasticizing cylinder 2, and approximately 2 to 3 people are required to operate the crane 10.
It is a time consuming task.

(b) Plasticizing cylinder 2 for vertical injection molding machines
The location of the machine is more than 2m above the floor level, which means work is required at height, and 2 to 3 people are working together.
There are many risks associated with this.

(c) Immediately after the completion of the molding work, this plasticizing cylinder 2
When performing removal work, the plasticizing cylinder 2 is at a high temperature of 200 to 300°C, so the workability is extremely poor and there is a risk of burns.

"Problems to be Solved by the Invention" The present invention solves the problem of the conventional vertical injection molding machine, which requires many tasks such as disassembling and removing the injection cylinder and plasticizing cylinder, or assembling and connecting them, which are often performed during molding operations. Considering that this is dangerous, hard work, and has poor workability, the aim is to improve work safety and work efficiency.

"Means for Solving the Problems" The present invention provides that when an injection cylinder and a plasticizing cylinder with a screw inside are connected or when both are disassembled, the plasticizing cylinder is moved horizontally to the injection cylinder. The plasticizing cylinder is provided with a notch on the lower surface of the flange of the injection cylinder, which allows the plasticizing cylinder to be slidably guided in the horizontal direction.

"action" Its operation will be explained with reference to FIG.

When removing the plasticizing cylinder 2 from the injection cylinder 1, first, all the coupling relationships between the cylinders 1 and 2 are released, and the plasticizing cylinder 2 is made horizontally movable. (See figure a) Next, the plasticizing cylinder 2 is simply held with the receiver 6.
Set it in a suspended state, grab the eye bolt 13 and pull it in the direction of arrow A. Then the plasticizing cylinder 2
slides on the receiver 6 and moves to the position b in the figure.

Next, the plasticizing cylinder 2 is lifted up by the crane 10 and transported to a predetermined location to complete the disassembly work. (Figure c) The assembly order is the reverse of this procedure.

In addition, when combining both cylinders, in some cases, simply place a plasticizing cylinder under the injection cylinder.
You can also do this by simply placing it on the receiver.

"Embodiment" Next, an embodiment of the present invention shown in FIGS. 1 to 4 will be explained. A plasticizing cylinder 2 is fixed to an injection cylinder 1 vertically with a bolt 12. There is. This fixation is made removable. The screw 3 housed in the plasticizing cylinder 2 is connected to the injection piston 9 and the spline 3.
a and a coupling ring 11.

14 is a flange portion of the injection cylinder 1,
4 is a notch provided across the main body wall 1' of the cylinder 1 and the flange 14.

Reference numeral 5 denotes a plasticized cylinder mounting surface formed on the lower surface of the flange portion 14 of the injection cylinder 1;
The upper surfaces of the flange portions 15 of the plasticizing cylinder 2 are brought into contact with each other.

A receiver 6 is attached to the lower surface of the flange portion 14 of the injection cylinder 1, and the receiver 6 slidably guides the flange portion 15 of the plasticizing cylinder 2.

Note that the receiver 6 may be provided with a device that reduces frictional force, such as a bearing, in order to facilitate sliding of the plasticizing cylinder 2.

Also, in order to prevent the plasticizing cylinder 2 from falling off from the receiver during horizontal movement, a stopper 16 is provided.
(See FIG. 3) may also be provided.

12 is a bolt for fixing the flange portion 15 of the plasticizing cylinder 2 to the flange portion 14 of the injection cylinder 1;
This may be omitted when fixing by.

In the above device, in order to make the plasticizing cylinder 2 horizontally movable, the injection piston 9 must be raised to the highest level by a back-up operation, the coupling 11 must be removed (see Figure 2), and the screw 3 must be automatically dropped. All you have to do is disengage the spline 3a.

Then, all the bolts 12 are loosened and removed, and the plasticizing cylinder 2 is moved while suspended on the receiver 6.

The installation and assembly work for the plasticizing cylinder 2 is the reverse of this procedure.

``Effects of the Invention'' In the present invention, the plasticizing cylinder can be moved in the horizontal direction while suspended on the receiver, eliminating the need for a crane and reducing the work and weight of the linked assembly. The dangers arising from the work of bolting and unbolting objects are eliminated.

Further, the horizontal movement of the plasticizing cylinder can be done simply by sliding it on the receiver, so it can be carried out by grasping a non-heated part such as an eye bolt, and there is no risk of burns.

The work of attaching and detaching the plasticizing cylinder is extremely easy and can be completed by one worker in about 30 minutes.

[Brief explanation of drawings]

Fig. 1 is a front view of the device of the present invention with one part cut away, Fig. 2 is a front view showing the injection piston of the injection cylinder and the screw of the plasticizing cylinder separated, and Fig. 3 is the same as Fig. 2. 4a, b, and c are explanatory diagrams sequentially showing the removal work of the plasticizing cylinder of the present device, and FIG. 5 is a partially cutaway front view of the conventional device, 6 is a sectional view taken along the line A--A in FIG. 5, and FIGS. 7a to 7f are explanatory diagrams sequentially showing the order in which the plasticizing cylinders are attached in the same apparatus. DESCRIPTION OF SYMBOLS 1... Injection cylinder, 1'... Main body wall of the injection cylinder, 2... Plasticizing cylinder, 3... Screw, 4... Notch, 6... Receiver, 14... Flange portion of the injection cylinder, 15 ...Flange part of plasticizing cylinder.

Claims (1)

[Scope of Claims] 1. A vertical injection molding machine having a notch provided below the main body wall of the injection cylinder to enable horizontal movement of a plasticizing cylinder containing a screw. 2. A notch is provided below the main body wall of the injection cylinder to enable horizontal movement of the plasticizing cylinder with an internal screw, and the plasticizing cylinder is mounted horizontally on the plasticizing cylinder mounting surface on the lower surface of the flange of the injection cylinder. A vertical injection molding machine equipped with a receiving plate that can be slidably guided. 3. The vertical injection molding machine according to claim 2, in which the plasticizing cylinder is fixed below the injection cylinder using a holder.