JPH05237875A - Injection molding machine - Google Patents

Abstract

PURPOSE:To ensure a positioning and aligning operation by a method wherein a groove block is fixed on one device and a pin block is fixed on the other device for the connection of both the devices, and a positioning groove is vertically provided in the groove block. CONSTITUTION:A separate-type clamping device is conneted to an injection device 2 through connectors 3. A groove block 8 is provided on a base 6 of the vertical clamping device 1. A pin block 9 is provided on a base 7 of the injection device 2 so as to positionally correspond to the groove block. A positioning groove 10 long in a vertical direction is perpendicularly provided in the groove block 8 with an accurate groove width. A positioning pin 12 having the same width as the groove width is projected on the pin block 9. When both the devices 1, 2 are connected to each other, the positioning pin 12 is fitted into the positioning groove 10 for a proper alignment, and both the devices 1, 2 are connected to each other with the connectors 3. Therefore, the separate-type clamping device 1 can be aligned and connected with the injection device 2 in a simple manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding machine in which a mold clamping unit and an injection unit are separately installed and are connected by a connecting device at the time of installation.

[0002]

2. Description of the Related Art An injection molding machine constructed by connecting a separately mounted mold clamping unit and an injection unit with a connecting device at the time of installation is convenient for transportation and storage. One unit is replaced with the other unit. However, there are advantages such as various combinations. Further, when the mold clamping unit is a vertical type, the injection units can be basically connected to the mold clamping unit from four directions, so that there are various layouts for installing the injection molding machine in the factory.

On the other hand, the relative positional relationship between the separately placed mold clamping unit and the injection unit is important, and the nozzle must be reliably positioned (centered) so that the nozzle touch can be performed accurately. In addition, in order to take advantage of the above advantages,
This positioning needs to be easy.

However, in the conventional injection molding machine of this type, both units are first joined by a connecting device to determine a rough position, and then the connecting device is operated to perform centering. It is necessary to position all front-back, left-right, up-down, and tilt relationships between the two units, which can sometimes vary in relation to each other. This centering operation is troublesome and requires time and labor.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an injection molding machine in which relative positioning between a separately placed mold clamping unit and an injection unit is easy.

[0006]

The present invention relates to an injection molding machine in which a separately mounted mold clamping unit and an injection unit are connected by a connecting device. A groove block fixed to one unit and a pin block fixed to the other unit corresponding to this form a positioning device. The groove block has vertical positioning grooves whose width dimension is precisely finished.
The pin block includes a positioning pin having a circular cross section whose outer diameter is precisely finished to the same dimension as the groove width. Both units are coupled by inserting a positioning pin into the positioning groove.

[0007]

Operation: The left and right positions of both units are determined by fitting the positioning pin into the positioning groove. By configuring the positioning groove in the up-down direction, it is possible to make relative adjustment of both units. The configuration in which the positioning pin can be rotated in the positioning groove enables relative tilt adjustment of both units.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an injection molding machine 4 in which a separately mounted mold clamping unit 1 and an injection unit 2 are connected by connecting devices 3 and 3.
Is shown. The mold clamping unit 1 is a vertical type. Reference numeral 5 is a positioning device. Mold clamping unit 1,
The injection unit 2 has the same structure as the conventional one. Connection device 3
Are provided at upper and lower positions of the side surfaces of the bases 6 and 7 facing each other in the units 1 and 2, and are strong enough to withstand the nozzle touch force of the injection unit 2 against the mold clamping unit 1. It is possible to adjust the relative vertical and horizontal positions of 2.

The positioning device 5 is composed of a groove block 8 and a pin block 9 (FIGS. 2 and 3), and is also provided on the opposite side surfaces of the bases 6 and 7. Groove block 8
Has a positioning groove 10 having a long dimension a (FIG. 3) in the up-down direction, and the positioning groove 10 is attached to a fitting groove 11 formed on the side surface of the base 6 of the mold clamping unit 1 so as to be vertical. There is. The positioning groove 10 is precisely finished, in particular with respect to the groove width dimension b. Pin block 9
Is attached to the side surface of the base 7 of the injection unit 2 in correspondence with the groove block 8, and the positioning pin 12
Is provided by projecting forward. The positioning pin 12 has a circular cross section, and its diameter is equal to the groove width dimension b.

When the mold clamping unit 1 and the injection unit 2 are coupled, the units 1 and 2 are brought close to each other, and the positioning pin 12 of the pin block 9 is first fitted into the positioning groove 10 of the groove block 8. At this time, even if the relative positions of the two units 1 and 2 are slightly offset from each other in the front-rear direction or the vertical direction, or the postures of the two units 1 and 2 are relatively tilted (FIG. 4), the positioning groove 10 is Due to the vertical length and the circular cross section of the positioning pin 12, the positioning groove 1
The positioning pin 12 can be easily fitted into the zero position.

As a result, the relative positions of the two units 1 and 2 are accurately determined at least in the left-right direction. Then, the two units 1 and 2 are coupled by the coupling devices 3 and 3. At this time, similarly to the above, since the positioning groove 10 is vertically long and the positioning pin 12 has a circular cross section, the relative vertical position deviation and relative attitude deviation of the units 1 and 2 are corrected. On the other hand, both units 1 and 2 can be connected by the connecting devices 3 and 3. The front and rear positions of both units 1 and 2 are determined by the connecting devices 3 and 3. However, when the connecting devices 3 and 3 do not have such a function, the tip of the positioning pin 12 contacts the groove bottom of the positioning groove 10. The front and rear positions of both units 1 and 2 are determined by contact.

As described above, the separately-installed mold clamping unit 1
In the injection molding machine 4 in which the injection unit 2 and the injection unit 2 are connected by the coupling devices 3 and 3, when the units 1 and 2 are combined,
First, the relative position of both units 1 and 2 is provisionally determined by the positioning device 4. Then, this position is fixed while being adjusted by the connecting devices 3 and 3. In this case, the provisional fixed state and the left / right relative position among the front / rear / left / right / vertical / inclined relative positions to be adjusted between the units 1 and 2 are determined by inserting the positioning pin 12 into the positioning groove 10. By being accurately determined, the base axis of adjustment is determined, and relative position adjustment and coupling of the two units 1 and 2 by the coupling devices 3 and 3 can be performed easily and quickly.

The above is an embodiment. In the embodiment, the groove block 7 may be attached to the injection unit 2 side and the pin block 8 may be attached to the mold clamping unit 1 side. Mold clamping unit 1
Is not limited to vertical type.

[0014]

EFFECT OF THE INVENTION An injection molding machine can be constructed by simply and conveniently centering and coupling a separately installed mold clamping unit and an injection unit.

[Brief description of drawings]

FIG. 1 is a front view.

FIG. 2 is a plan view of a main part.

FIG. 3 is a front view of a main part (partial cross section).

FIG. 4 is a side view for explaining a relative position regarding inclination.

[Explanation of symbols]

1 Clamping unit 2 Injection unit 3 Connection device 4 Injection molding machine 5 Positioning device 6,7 Base 8 Groove block 9 Pin block 10 Positioning groove 11 Fitting groove 12 Positioning pin

Claims (1)

[Claims] 1. An injection molding machine in which a separately-installed mold clamping unit and an injection unit are combined by a connecting device, wherein a groove block fixed to one unit and a groove block fixed to the other unit corresponding thereto. The groove block has a positioning device in the vertical direction whose groove width dimension is precisely finished.The pin block has an outer diameter of the same dimension as the groove width. An injection molding machine comprising a locating pin having a circular cross section finished in the above, wherein the locating pin is fitted into a locating groove to join both units.