JPH03189119A - Apparatus for traverse feed of mold - Google Patents

Abstract

PURPOSE:To make it possible to perform smoothly traverse feed of a mold by provid ing a slide apparatus with a slide face on either a fixed platen or a movable platen and performing traverse feed of the mold while the mold is brought into sliding contact with the slide face of the slide apparatus. CONSTITUTION:A fixed side mold 6 and a movable side mold 7 are fixed by bolts 11 through an open stopper 10. Slide apparatus 9 for traverse feed of a mold are fixed on both upper and lower parts of a fixed platen and fixing of the mold is performed by sliding a fixing part of the mold between them. The slide apparatus 9 are placed in such a way that the mold does not fall down when it is inserted and collars 9a are facing upward and downward. When the mold 6 is slided, the slide face of the fixed side mold 6 is placed on the slide face (a) of the slide apparatus 9. Under this condition, the mold 6 is slide at a specified position and the mold 6 and a platen 1 are brought into tight contact with each other by screwing push bolts 12. In addition, when they are brought into tight contact and in the case when the slide faces (a) and (b) are apart and the connection between the slide apparatus 9 and the mold 6 is cut, axial shift of the platen 1 and the mold 6 caused by thermal expansion after temp. of the mold is elevated and abnormal force applied to the mold 6 is eliminated.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a mold traversing device.

(Prior art) In horizontal mold clamping type injection molding machines, etc., when the mold to be used cannot be inserted from the top or bottom using a crane, etc.
For example, in an environment where a crane cannot be used (such as a clean room), it is necessary to use a mold stacking method that inserts the mold from the side, but in that case, the stacking device becomes an obstacle and may cause damage to the mold. There's a problem.

FIG. 5 shows a conventional mold stacking device. Conventionally, guide rollers 4 and 5 for stacking molds were attached to both sides of the fixed platen 1 and the movable platen 3. However, in this case, it is extremely difficult to mount the movable platen 3 and the fixed platen 1 so that their distances from the center are exactly the same.

Furthermore, from the perspective of the structure of the mold opening/closing mechanism of the molding machine, the movable platen 3 is slid relative to the fixed platen 1 via the tie bar 2, and is moved relative to the fixed platen 1. must have at least some clearance. In addition, there are processing and assembly errors in the pitch of the fitting part of the tie bar 2 with respect to the center of both platens 1 and 3, and overall, the fixed platen 1 and movable platen 3
It is extremely difficult to align the centers of the two.

Even if these errors could be strictly reduced and the centers could be made to coincide, when the molds were heated to a predetermined temperature, heat generated due to the difference in weight between the stationary mold 6 and the movable mold 7 It is extremely difficult to ensure alignment of the axes due to the difference in expansion and also the difference in thermal expansion of each platen due to heat transfer from the mold to the platen.

In particular, as shown in Figure 6 after thermal expansion, if the axis 7' of the movable mold 7 deviates upwards by an amount t with respect to the axis 6' of the stationary mold 6, the axial center will be adjusted. This is impossible unless the movable guide roller 4 is removed, making adjustment extremely inconvenient.

(Problems to be Solved by the Invention) In view of the problems of the prior art described above, an object of the present invention is to provide a mold stacking device that does not damage molds and allows easy centering in a horizontal mold loading device. do.

(Means for solving the problem) Attach an L-shaped slide device having a collar portion having a sliding surface that makes sliding contact with the mold on the mold mounting surface of either the fixed platen or the movable platen so as to face each other vertically, The sliding surface of the first part of the sliding type sliding device was designed so that when the mold was brought into close contact with the mounting surface on the platen side, the edges of both sliding surfaces on the sliding device side and the mold side were completely separated.

Furthermore, a metal plate with a small friction coefficient is attached to the sliding surface of the flange of the L-shaped sliding device, or balls or rollers are provided to facilitate sliding.

(Example) The structure of the present invention is shown in FIG. 1, and a fixed side mold 6 and a movable side mold 7 are fixed by bolts 11 via an opening stop 10. As shown in FIG. Generally, the fixed side mold 6 includes a fixed platen 1.
A locate ring 8 is attached to align the axis with the fixed platen 1, and is adapted to fit into a locate hole 8a of the fixed platen 1.

The fixed platen 1 has a slide device 9 for stacking molds.
The slide device 9 is arranged such that the flanges 9a face each other vertically to prevent the mold from sagging when inserted.

The attachment of the stationary mold 6 to the stationary platen 1 will be explained with reference to FIGS. 2 and 3. When sliding the mold 6, the sliding surface of the stationary mold 6 is moved by the sliding device 9.
Place it on slide surface a.

At this time, the distance Q3 between the mold mounting surface C of the fixed platen 1 and the fixed mold mounting surface d is larger than the thickness Q4 of the locate ring 8 by α (Q a ''Q 4+α). In this state, slide the mold 6 to a predetermined position and screw in the push bolt 12 to bring the mold 6 and platen l into close contact.At this time, the distance Q1 from the sliding surface to the center of the mold, If the distance Q2 from the slide surface a to the center of the fixed platen 1 is set to be equal, the locate ring 8 and the platen locate hole 8a can be easily fitted together by the push bolt 12.

In addition, if the slide surfaces a and b separate when they are brought into close contact and the edges of the slide device H9 and the mold 6 are cut, the axis of the platen 1 and the mold 6 may shift due to thermal expansion after the mold temperature rises. no,
Unreasonable force on the mold 6 is eliminated.

Since there are no guide rollers or the like on the movable platen 3 side, the movable mold 7 can be attached to any position on the movable platen 3, and even if eccentricity of both platens 1 and 3 occurs after the temperature rises, it can be fixed and fixed. The axes of both movable molds 6 and 7 can be aligned.

The above explanation is for a mold 6 with a locate ring 8, but for a mold without a locate ring 8, or conversely, when it is necessary to accurately determine the position of the movable mold 7 and the movable platen 3. In some cases, a slide device i9 is provided on the movable platen 3.

Therefore, the present invention requires that an L-shaped slide device 9 be provided above or below either the fixed platen 1 or the movable platen 3.

In addition, although the slide surface a of the slide device is shown as a smooth surface in FIG. 2, for example, by attaching a plate (not shown) with a small friction coefficient or incorporating a guide roller (not shown) to the slide surface a, the slide It can also be made easier.

Further, as shown in FIG. 4, if a large convex portion 13 is provided on the platen mounting surface of the movable mold 7, this will be effective even in molds where the guide roller cannot reach.

(Effects) A slide device having a sliding surface is provided on either the fixed platen or the movable platen, and the mold is inserted sideways by sliding in contact with the sliding surface of this slide device, so side insertion can be performed smoothly. can.

Especially when the mold is brought into close contact with the mounting surface on the platen side,
Since the edges of both slide surfaces on the slide device side and the mold side are completely separated, there is no possibility of misalignment of the axes of the platen and mold due to thermal expansion after the mold temperature rises, and unreasonable force on the mold. This eliminates this problem, ensuring not only the safety of the equipment but also accurate horizontal loading operation.

[Brief explanation of drawings]

FIG. 1 shows a mold traversing device according to the present invention. FIG. 2 similarly shows the state in which the mold is slid by the mold traversing device. FIG. 3 shows a state in which the mold is brought into close contact with the fixed platen by the stacking device shown in FIG. FIG. 4 shows an example of modification of the platen mounting surface of the movable mold. FIG. 5 shows a known mold stacking device. FIG. 6 is an explanatory diagram when the axes of the stationary mold and the movable mold are misaligned. In the figure: a, b sliding surface c, d mold mounting surface 1 fixed platen 2 tie bar 3 movable platen 4 movable guide roller 5 fixed guide roller 6 fixed mold 7 movable mold 8 locate ring 88 locate hole 9 Slide group [9a Collar 10 Stopper 11 Bolt 12 Push bolt 13 Convex portion Fig. 3 Fig. 5 Fig. 6

Claims (3)

[Claims] (1) Attach an L-shaped slide device having a flange having a sliding surface that makes sliding contact with the mold on the mold mounting surface of either the fixed platen or the movable platen so as to face each other vertically. The sliding surface of the flange portion is such that when the mold is brought into close contact with the mounting surface on the platen side, the edges of both sliding surfaces on the sliding device side and the mold side are completely separated. Device. (2) The mold traversing device according to claim 1, characterized in that a metal plate with a small friction coefficient is attached to the slide surface of the flange portion of the L-shaped slide device. (3) The mold traversing device according to claim 1, characterized in that a ball or roller is provided on the slide surface of the flange portion of the L-shaped slide device.