JPH0755051Y2 - Injection molding machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding machine, and more particularly to an injection molding machine incorporating a temperature controller.

[0002]

2. Description of the Related Art In injection molding, it is very important to control the mold temperature because the mold temperature affects the cycle surface and the physical properties of the molded product. Therefore, a so-called temperature controller, which is separate from the injection molding machine, has been used as a device for controlling the mold temperature. This temperature controller is provided in a tank containing a medium, an electric heater for overheating the medium, a box-shaped case accommodating both, and an outer surface of the case.
It was roughly composed of a controller and the like for adjusting the temperature of the medium. Then, the temperature controller and the injection molding machine are connected by a hose, and the temperature of the mold is adjusted while the medium circulates in the mold and the tank of the temperature controller.

[0003]

However, as described above, since the conventional temperature controller is constructed separately from the injection molding machine, it is arranged beside or above the injection molding machine. In any case, I had a hard time securing the space for placement. In addition, it may be placed on the back side of the injection molding machine because it interferes with the work, and the operability is poor because the controller of the temperature controller must be rotated around the injection molding machine one by one. there were.

An object of the present invention is to solve the above problems, to save space as a whole device and to improve operability.

[0005]

In order to achieve the above object, the structure of the present invention is as follows. That is, a reinforcing member having a space is attached to the machine base of the injection molding machine body, the reinforcing member is formed as a tank for the temperature control device, and further, the temperature control device component is attached to the tank and the temperature control device is attached. The controller of the adjusting device is integrated with the controller for the injection molding machine.

[0006]

With the above structure, the reinforcing member having a space attached to the machine base of the injection molding machine body is formed as a tank for the temperature control device, and the components for the temperature control device are attached to the tank. By doing so, the tank for the temperature control device, which is conventionally provided separately from the injection molding machine, becomes unnecessary, so that space saving of the entire device can be achieved. in addition,
By providing the controller for the temperature controller integrally with the controller for the injection molding machine, it is possible to improve the operability by eliminating the trouble of an operator going back and forth between the controllers as in the conventional case.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, the overall configuration of the thermoplastic resin injection molding machine will be described with reference to FIGS. 3 and 4.

A mold clamping mechanism 2 and an injection mechanism 3 are arranged on the machine base 1 on the same axis. The mold clamping mechanism 2 is
A mold clamping cylinder 4 fixed to the left end of the figure, a fixed plate 6 facing the mold clamping cylinder 4 and connected by four tie bars 5, and a tie bar 5 between the mold clamping cylinder 4 and the fixed plate 6. The fixed plate 6 and the movable plate 7 arranged to be movable back and forth with respect to the fixed plate 6 and a ram 8 having one end fitted to the mold clamping cylinder 4 for moving the movable plate 7 forward and backward. A fixed mold 9 and a movable mold 10 are detachably attached to the movable plate 7, respectively. Further, the fixed platen 6 to the mold clamping cylinder 4 are covered with a protective cover (not shown).

The injection mechanism 3 comprises a heating cylinder 11, a hopper 12, an injection cylinder section 13, a hydraulic motor 14, etc., which are mounted on a slide base 15 fixed to the machine base 1 so as to be able to reciprocate. There is. The injection cylinder section 13 is directly placed on the slide base 15, and the mold clamping mechanism 2 of the injection cylinder section 13 is mounted.
The heating cylinder 11 is connected to the side, and the nozzle 16 is attached to the tip of the heating cylinder 11 toward the central opening of the stationary platen 6. Further, a hydraulic motor 14 is provided on the opposite side of the heating cylinder 11 with the injection cylinder 13 interposed therebetween.
Is provided. Further, a hopper 12 for supplying a material is provided above the injection cylinder 13.

Next, the temperature control device of the present invention will be described with reference to FIGS. 1 and 2. Reinforcing members 20 made of, for example, a steel plate are attached to the bottom of the machine base 1 below the fixed plate 6 and the movable plate 7 when the mold is opened in the width direction of the machine base 1. Each of the reinforcing members 20 is a set of two steel plates 20a, 20b arranged at a predetermined interval in the longitudinal direction of the machine base 1. Longitudinal reinforcing members 21 are arranged so as to be orthogonal to the respective reinforcing members 20 at predetermined intervals inward from the longitudinal frame 1a of the machine base 1. A closing member is provided so as to close a space 23a formed by the bottom of the machine base 1 and the two reinforcing members 20a, 20b and the longitudinal reinforcing member 21 at a predetermined height from the bottom of the machine base 1. 22 are provided. In this way, the tank 23 containing the liquid medium W for the temperature controller is formed.

An electric sheath heater 24 for heating the medium W and a thermocoupling 25 for measuring the temperature of the medium W are inserted in each tank 23. Pump 26 on tank 22
Is placed on the tank through the closure member 22 from the pump 26.
A pipe 27 is extended in 23. Further, a pipe 29 is provided from the pump 26 through the machine base 1 to the mold 10 via the temperature control block 28 installed on the machine base 1. An overflow pipe 30 is provided to allow a certain amount of medium W in the tank 22 to escape to the outside of the tank 22.

In FIG. 2, the spaces 31, 32, 33, 34 at the corners formed by the frame 1a of the machine base 1, the longitudinal reinforcing member 21 and the closing member 22 are used for hydraulic piping, electric wiring, etc. To be done. Further, a driving device for the mold clamping mechanism 2 and the injection mechanism 3, a control device and the like are arranged in another space of the machine base 1, but they are not shown.

As shown in FIG. 3, an injection molding machine controller 40 and a temperature controller controller 41 are integrally provided outside the machine base 1 on the front surface of the injection molding machine. The temperature controller controller 41 is connected to the electric sheath heater 23, the thermocoupling 24, and the pump motor 25 by electric wiring. Incidentally, 45 is a molded product drop port.

Next, the operation of this embodiment constructed as described above will be described. The resin supplied from the hopper 12 drops into the heating cylinder 11, and the screw in the heating cylinder 11 is moved to the hydraulic motor 14
And is reciprocated by the injection cylinder 13 to be injected into the cavity formed by the molds 9 and 10 from the nozzle 16 at the tip of the heating cylinder 11. On the other hand, the movable mold 10 fixed integrally with the movable plate 7 is guided by the mold clamping cylinder 4 and the ram 8 while being guided by the tie bar 5 and moved until it comes into contact with the fixed mold 9 which faces the movable mold 7. A cavity is formed between the two. At this time, as described above, the nozzle 16
Resin is injected into the cavity from. After a predetermined time, that is, when the molded product is completed in the cavity, the movable mold 10 is separated from the fixed mold 9 and returned to the original position. At the same time, the molded product is discharged from the device through the drop port 45. By automatically repeating these operations, mass production of molded products is performed.

During the above-mentioned molding operation, the mold temperature must be kept constant at all times, which is carried out by the temperature controller described below. A tank 23 formed by utilizing the reinforcing members 20 and 21 provided in the machine base 1 is filled with a certain amount of the liquid medium W. Medium W is an electric sheath heater
It is heated by 24 and at the same time its temperature is measured by the thermocoupling 24. This measured temperature is input to the temperature controller controller 41 and compared with the set temperature,
A predetermined temperature is controlled by turning on and off the current flowing through the heater 23 according to the comparison result.

The medium W having a predetermined temperature is pumped by the pump 26.
It is supplied from the tank 23 to the fixed mold 9 and the movable mold 10 through the pipe 27, the pipe 29, and the temperature control block 28. The medium W that has performed heat exchange in both molds 9 and 10 is likewise returned to the tank 23 via another pipe or the like. In this way, the medium W having a predetermined temperature circulates in the tank 23, the molds 9 and 10, and the mold temperature is maintained at a constant temperature. In addition, the change of the set temperature of the medium W,
Operations such as starting and stopping of the pump 26 are performed by a temperature controller controller 41 that is provided integrally with the molding machine controller 40 on the front of the injection molding machine.

In the present embodiment, the mold temperature control device of the thermoplastic resin injection molding machine has been described as an example, but the temperature control of the hydraulic oil used in a hydraulic pump or the like and the thermosetting resin injection molding are performed. It can also be used for temperature control of the heating cylinder of the machine. Further, in the case of the present embodiment, the controller for the injection molding machine is provided integrally with the molding machine main body, but even when it is provided as a separate body, the controller for the temperature control device is provided for this separate injection molding machine. Operability can be improved by providing it integrally with the controller.

[0018]

As is apparent from the above description, since the reinforcing member of the machine base is formed as the tank for the temperature control device and the controller for the temperature control device is formed integrally with the controller for the injection molding machine, the entire device is You can achieve space saving,
Further, the piping distance between the temperature controller tank and the mold can be shortened, and the operability can be improved.

[Brief description of drawings]

1 is a cross-sectional view showing an embodiment of the present invention, which is taken along the line A in FIG.
It is the figure seen from-A.

FIG. 2 is a sectional view taken along line BB in FIG.

FIG. 3 is a front view of the injection molding machine of the present invention.

FIG. 4 is a plan view of FIG.

[Explanation of symbols]

 1: Machine stand 6: Fixed plate 7: Movable plate 9: Fixed mold 10: Movable mold 20: Reinforcing member 21: Longitudinal reinforcing member 22: Closing member 23: Temperature controller tank 40: Controller for injection molding machine 41: Controller for temperature controller

Claims (1)

[Scope of utility model registration request] 1. A reinforcement member having a space is attached to a machine base of an injection molding machine body, the reinforcement member is formed as a tank for a temperature control device, and further, a component for the temperature control device is attached to the tank. An injection molding machine, wherein the controller of the temperature control device is provided integrally with the controller for the injection molding machine.