JPH0118341Y2 - - Google Patents

Description

[Detailed description of the invention] <Technical field to which the invention pertains> The present invention relates to a mold centering adjustment device for an injection nozzle of an injection molding machine or the like.

<Prior art and its drawbacks> In an injection molding machine, etc., as shown in FIG. The nozzle touch cylinder 6 provided between the injection units 4 advances and retreats, and the gate portion 8 of the mold 7 is moved forward and backward.
It's starting to move closer and closer to each other.

At this time, if the center of the gate part 8 of the mold 7 and the center of the nozzle 3 do not match, the mold 7 and the nozzle 3 will overlap during injection.
Resin leaks from the gap created between the two, which not only results in defective products, but also is dangerous and impedes stable molding.

Conventionally, in order to center the mold 7 and the nozzle 3 as described above, a positioning seal part is provided between the mold 7 and the fixed platen 5, and the dimensions of the seal part and the gate part 8 of the mold 7 are adjusted. By controlling the centers of the two, they were made to coincide, and by bringing the gate portion 8 and the nozzle 3 into spherical contact, a slight misalignment was absorbed.

However, when the mold is installed using an automatic mold changer as in recent years, it is not possible to provide a seal part between the stationary platen 5 and the mold 7, and the core of the injection unit 4, that is, the core of the nozzle 3, cannot be provided. It is difficult to match the center of the gate part 8 of the mold 7, and there is a limit to the amount that can be absorbed by bringing the gate part 8 and the nozzle 3 into spherical contact. Since high alignment is required, there is a need for a centering adjustment device capable of more accurate centering.

<Purpose of the invention> The present invention was created in view of the above-mentioned situation, and provides a mold that allows the core of the mold to be easily and reliably aligned with the core of the injection nozzle when the mold is installed. The present invention provides a centering adjustment device.

<Summary of the invention> To achieve the above-mentioned purpose, the present invention is based on a method of manufacturing a mold mounting surface of a fixed plate and a movable plate of an injection molding machine, etc., which is located at the bottom or near the side edge. a first gradient member supported by the support so as to be movable in the longitudinal direction and having a gradient surface extending at an inclination in the longitudinal direction; and a first gradient member for moving the first gradient member in the longitudinal direction. and a first slope member having a slope surface slidably in contact with the slope surface of the first slope member and movable in a direction perpendicular to the longitudinal direction by longitudinal movement of the first slope member. The present invention relates to a mold centering adjustment device for an injection molding machine, etc., which has a second slope member, and the second slope member directly or indirectly receives the lower surface or side surface of the mold in a position-adjustable manner.

<Example> Next, an example in which the mold centering adjustment device according to the present invention is attached to the lower part of the mold mounting surface to finely adjust the mold in the vertical direction will be explained with reference to FIGS. 1 to 3. Then, 10 and 11 are mold centering adjustment devices attached to the fixed platen 5 and the movable platen 12, respectively, and since their structures are completely the same, only the mold centering adjustment device 10 will be described below. Second
In the figures and FIG. 3, reference numeral 13 denotes a support extending parallel to the lower surface of the stationary platen 5, and is attached to the lower part of the mold mounting surface of the stationary platen 5 with bolts 14. 1
A pinion 5 is integrally attached to a shaft 16 that is rotatably supported on the support body 13, and is configured to rotate as the shaft 16 rotates.

Reference numeral 17 denotes a first slope member provided with a rack that meshes with the pinion 15, and is supported movably on the support body 13 along its longitudinal direction, and has a slope surface A whose upper surface slopes and extends in the longitudinal direction. It's summery. On this first slope member 17, there is a slope surface B whose lower surface forms a pair with the slope surface A and slidably contacts with each other.
A second slope member 19 is provided so as to be movable vertically at right angles to the longitudinal direction, that is, in FIG. On the second slope member 19 is a roller support member 18 rotatably mounted with a plurality of rollers 20 for carrying in the mold 7 from the right side in FIG. 2 and carrying it out to the right side. It is attached so that it can move up and down integrally with the gradient member 19. Reference numeral 21 denotes a stopper for centering the mold 7 in the left-right direction in FIG.

Next, the operation of this device will be explained. Mold 7
is carried in from the right side in FIG. 2 using a mold carrying-in/out device (not shown) or the like. The mold 7 carried in is supported by rollers 20, and is sent in until it contacts a stopper 21 by rolling the rollers 20.

Next, when the pinion 15 is rotated by rotating the shaft 16 with a handle or the like (not shown), the first gradient member 17 moves to the left or right along the support 13, and the first gradient member 17 located above moves to the left or right. The two slope members 19 and roller support members 18 move upward or downward by the relative sliding of the slope surfaces A and B. As a result, the mold 7 moves upward or downward, the distance between the bottom surface of the mold 7 and the center of the nozzle 3, that is, the height of the dimension H, is adjusted, and the gate part 8 of the mold 7 is adjusted.
The centering of the center of the nozzle 3 and the center of the nozzle 3 in the height direction is performed.

In addition, in FIG. 2, centering in the left and right direction is performed by the stopper 21, but if a device similar to the mold centering adjustment device 10 described above is installed laterally instead of the stopper 21, centering in the left and right direction is performed. Centering can be adjusted.

<Effects of the Invention> As explained above, according to the present invention, the centering of the mold can be performed easily and accurately, and great effects can be obtained when applied to precision molding that is required these days.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a part of an injection molding machine equipped with the mold centering adjustment device of the present invention, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a - line in Figure 2. FIG. 4 is a sectional view showing a part of a conventional injection molding machine. DESCRIPTION OF SYMBOLS 10, 11... Mold centering adjustment device, 13... Support body, 15... Pinion, 17... First gradient member, 18... Roller support member, 19... Second gradient member, 20... ...Laura, 21...Stoppa.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A support extending in the horizontal or vertical direction and provided at the bottom or near the side edge of the mold mounting surface of the fixed platen and movable platen of an injection molding machine, etc.;
a first gradient member supported movably in the longitudinal direction on the support body and having a gradient surface extending obliquely in the longitudinal direction; and means for moving the first gradient member in the longitudinal direction; A second slope member, which has a slope surface that slidably contacts the slope surface of the first slope member, and is movable in a direction perpendicular to the longitudinal direction by movement of the first slope member in the longitudinal direction. A mold centering adjustment device for an injection molding machine, etc., which has a second slope member, and the lower surface or side surface of the mold is directly or indirectly received by the second slope member so that the position thereof can be adjusted. 2. Injection molding according to claim 1, wherein the second slope member is configured to receive the mold so that it can be carried in and out by rolling through a roller. Mold centering adjustment device for machines, etc.