JPH0215628Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) This invention relates to an injection molding machine.
More specifically, the present invention relates to an injection molding machine characterized by a mounting structure for drive sources such as a pump and a motor for driving actuating devices such as an injection device and a mold clamping device.

(Prior Art) Conventionally, in some types of injection molding machines, operating devices such as an injection device and a mold clamping device are placed on a bed, while pumps, motors, etc. are placed in the cavity of the bed. A driving source is housed therein, and the actuating device is actuated based on the driving force supplied from the driving source.

(Problem to be solved by the invention) By the way, in conventional injection molding machines of this type, drive sources such as pumps and motors were directly attached to the bottom wall of the bed cavity. The vibrations generated were transmitted to the bed, which was a major cause of noise.

(Means for solving the problems) The present invention was made to solve the above problems, and its gist is as follows:
The drive source is attached to a predetermined support, and the support is further attached to the ceiling of the bed via a first buffer means so as to hang down inside the cavity of the bed, while the support is attached to the ceiling of the bed through a first buffer means. The structure is supported in the horizontal direction by means of the second buffer means against the vertical wall surface within the body.

(Functions and Effects) In such an injection molding machine, the support body to which the drive sources such as pumps and motors are attached is suspended from the ceiling of the bed, so vibrations from the drive sources are not directly transmitted. It is difficult to convey to Betsudo,
Furthermore, since this support body is supported by the bed via the first and second buffer means, the vibrations generated by the drive source are effectively absorbed by these buffer means, and the vibrations from the drive source to the bed are effectively absorbed. The noise caused by the transmission of noise is suppressed.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

First, FIG. 2 schematically shows a screw type injection molding machine. In this figure, 10 is a bed, and an injection device 12 and a mold clamping device 14 are placed on the top surface of the bed. The mold clamping device 14 has a hydraulic cylinder 16, and by moving the piston rod 18 back and forth, the movable platen 20 is moved horizontally relative to the fixed platen 22 while being guided by the tie bars 17, and thereby The molds attached to the movable platen 20 and the fixed platen 22 are opened and closed. On the other hand, the injection device 12 has a heating cylinder 24 and a drive section 26 for driving a screw disposed inside the heating cylinder 24. When the screw is rotated or moved forward or backward, the injection device 12 is moved from the hopper 28. The material fed into the heating cylinder 24 is plasticized and then injected from a nozzle 29 into the molding cavity of the mold.

As shown in FIG. , whose interior is divided into two cavities 48 and 50. A plate-shaped support 38 is disposed within one cavity 48, and its upper end is connected to the ceiling 30 through the elastic body 40.
is attached to the top of the That is, the upper end portion of the support body 38 penetrates the ceiling portion 30 and protrudes above it, and the head portion 58 parallel to the ceiling portion 30 is placed on the upper surface of the ceiling portion 30 via the rubber elastic body 40. , the entire support 38 is suspended within the cavity 48.

Further, on one of the vertical plate surfaces of the support body 38, the drive section 26 of the injection device 12 and the mold clamping device 1 are provided.
Pumps 52, 5 for supplying pressure oil to the respective drive parts of each actuating device, such as the hydraulic cylinder 16 of No. 4;
4 (see FIG. 2) and a motor 42 are fixed via a rubber elastic body 46 (only the motor 42 is shown in FIG. 1), and on the other side,
One end of the spring 44 is fixed to the wall surface 56 of the central wall portion 36, and the other end of the spring 44 is fixed, so that the support body 38 is elastically supported in the horizontal direction.

Therefore, in the injection molding machine of this example having such a structure, the motor 42 and pump 5 which are vibration sources are
2,54 are attached to a support 38 that depends within the cavity 48 of the bed 10, and
is supported by the ceiling 30 and center wall 36 of the bed 10 via a rubber elastic body 40 and a spring 44, so the motor 42 or pump 5
2, 54 is effectively suppressed from being transmitted to the bed 10, thereby effectively reducing the noise caused by the vibration transmitted from the drive source such as the pump 42 to the bed 10. be.

Although the embodiments of the present invention have been described in detail above, the present invention can be implemented in other embodiments.

For example, in the above embodiment, the spring 44
It is also possible to arrange the support body 38 between the support body 38 and the side wall part 34 so that the support body 38 is elastically supported by the side wall part 34, and also to make the bed 10
The side wall portion 34 does not necessarily have to be provided to cover the internal cavity, and a portion thereof may be opened to the front or rear of the injection molding machine. Similarly, the support body 38 does not necessarily have to be a plate-like body, and may be configured in a frame-like shape.

Further, in the above example, the rubber elastic body 40 is used as the first buffer means, and the spring 4 is used as the second buffer means.
4 is used, but the reverse use is also possible,
Furthermore, it goes without saying that other known members having a buffering function can also be used as such first or second buffering means.

Furthermore, the present invention can be modified in various ways based on the knowledge of those skilled in the art without departing from its spirit, such as the possibility of omitting the rubber elastic body 46 between the pump 42 and motors 52, 54 and the support body 38. It is possible to implement it in a form in which the following is added.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of an injection molding machine according to an embodiment of the present invention, and FIG. 2 is a front view schematically showing the injection molding machine. 10: Bed, 12: Injection device, 14: Mold clamping device, 16: Hydraulic cylinder, 26: Drive unit, 30:
Ceiling part, 34: Side wall part, 36: Center wall part, 38:
Support body, 40: rubber elastic body (first buffer means),
42: Motor, 44... Spring (second buffer means), 46: Rubber elastic body, 48, 50: Cavity part,
52, 54: pump, 56: wall surface.

Claims (1)

[Scope of utility model registration request] An injection structure in which actuating devices such as an injection device and mold clamping device are placed on a predetermined bed, and a drive source such as a pump or motor for driving the actuating device is housed in the cavity of the bed. In the molding machine, the drive source is attached to a predetermined support, and the support is further attached to the ceiling of the bed via a first buffer means so as to hang down within the cavity of the bed, while the support An injection molding machine characterized in that the body is supported in the horizontal direction against a vertical wall surface within the cavity via a second buffer means.