JP3172956B2 - Dust proof structure of sliding surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust-proof structure for a sliding surface of a moving die plate in a mold clamping device such as a die-casting machine. The present invention relates to protection of a sliding surface in an environment where it is scattered and mixed.

[0002]

2. Description of the Related Art A sliding surface of a movable die plate in a mold clamping device of a die casting machine is used for dropping droplets of a water-soluble release agent and dropping of solidified pieces of molten metal such as burrs and flashes of a die-cast product. The lubricating oil mixes into a poorly cleaned state. For this reason, a wiper is provided on the sliding surface to prevent the mixed material from entering the sliding surface. In a large-sized machine, a cover that covers a sliding surface is configured to be extendable and contractable, and a wiper is provided in an extendable portion of the cover.

[0003]

However, since the structure of a general wiper is an unsealed structure, the water-soluble release agent and the lubricating oil on the sliding surface are mixed and become emulsified, which makes it difficult to treat the waste liquid. There is. In addition, solidified pieces of molten metal such as burrs and flashes of die-cast products are hard to slide, causing abnormal wear of the sliding surface and damaging the wiper, making maintenance of the machine extremely difficult. When a telescopic cover is used, the cover slides, so that the cover cannot be used for a long period of time and must be replaced frequently.

[0004] The present invention has been made in view of the above points, the water-soluble release agent and lubricating oil on the sliding surface are scattered and mixed,
It is another object of the present invention to obtain a dust-proof structure for a sliding surface that can be used for a long time in a dusty environment.

[0005]

In order to solve the above-mentioned object, the present invention provides a sliding plate as a sliding surface of a movable die plate fixed to a machine frame of a die casting machine, and a sliding plate of a sliding plate. A space formed between the opposing machine frame, a recess formed over the entire length on the back surface, a guide roller box abutting on the machine frame in contact with both end surfaces in the sliding direction of the sliding plate, and a guide roller A guide roller rotatably supported in the box, a sliding foot that slides on a sliding plate and is attached to both lower sides in the width direction of the movable die plate, and a sliding foot at both ends in the sliding direction of the sliding foot. A belt having a belt end fixed, a guide roller wound around and a space portion passed through, and the belt is slid over the entire sliding surface length and width,
Also, make sure that the width of the belt is wider than the width of the sliding surface, overhangs are formed on both sides in the width direction of the sliding surface, and the wipers that are in sliding contact with the overhang are attached over the entire length of the sliding surface. Features a dust-proof sliding surface.

[0006]

[Function] The belt is slid in contact with the sliding surface over the entire width and the entire length of the sliding surface, and is fixed via lubricating oil on the sliding surface, and both edges in the width direction of the belt are sealed with wipers to provide a dustproof structure for the sliding surface. I have.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The mold clamping part of the die casting machine mainly includes a fixed die plate 31, a movable die plate 1, a plurality of tie bars 32 and a machine frame 4, as shown in FIGS. 4 and 5, and includes a mold clamping cylinder 33 and a link mechanism. The movable die plate 1 is reciprocated on a slide plate 3 provided on a machine frame 4 by a mold clamping device 35. Reference numeral 36 denotes a dustproof structure showing a main part of the present embodiment, which is a cross-sectional view taken along the line AA of FIG. 4, which is a cross-sectional view at right angles to the sliding direction of the sliding surface, and FIGS. FIG. 3 is an enlarged perspective view of the guide roller box 7.
This will be described in detail with reference to FIG. Sliding feet 2 are attached to both sides of the lower portion of the movable die plate 1 in the width direction, and the movable die plate 1 slides on a sliding plate 3 fixed to a seat portion of the machine frame 4 by bolts (not shown). It is configured as follows.

A recess 5 is provided over the entire length of the sliding surface of the sliding plate 3 to form a space 6 between the sliding plate 3 and the machine frame 4. The two guide roller boxes 7 are provided so as to be in contact with both end surfaces of the belt 3 and have the belt 10 so that the belt 10 does not go outside because of the fully-closed structure.

On both sides 2a of the sliding foot 2 in the sliding direction, metal fittings 9 for fixing both ends of the belt 10 are provided.
0 is wound around a guide roller 8 (only one side is shown), and at the same time, is passed through a space 6 provided on the back surface of the sliding plate 3 to be tensioned, and the belt 10 is placed on the sliding surface 3 a of the sliding plate 3. Sliding contact. Therefore, the belt always covers the sliding plate 3 even when the movable die plate 1 moves with the opening and closing operation of the mold. The width of the belt 10 is formed so as to overhang by a small dimension w on both sides of the width of the sliding surface 3a, and the upper end of the wiper 11 fixed to the upper part of the stepped sliding plate 3 is It is in sliding contact with the back surface of the belt 10.

The wiper 11 is made of urethane rubber or the like, and its lower end is in contact with the upper end of the lower part of the sliding plate 3 having a width larger than that of the upper part. A gutter 16 for discarding the dropped molten solidified pieces and the water-soluble release agent is adjacent.

The guide roller box 7 has the structure shown in the enlarged perspective view of FIG. The members 12 and 13 can be divided, and the member 13 is attached to the machine frame 4 by bolts 14. A wiper 15 slidably in contact with the belt 10 is attached to the upper end of the member 13, and it is possible to remove a falling object and an attached matter onto the belt 10. The belt 10
Is a metal belt or oil-, water-, or heat-resistant resin (rubber)
It consists of a belt.

[0012] Because of the dustproof structure configured as described above, the fixed die plate 3
A mold (not shown) between the die 1 and the moving die plate 1 is opened, and a water-soluble mold release agent is sprayed on the mold opening surface, and the molten metal coagulated pieces such as burrs and flashes of the die-cast product are dissolved in the water-soluble mold release agent. At the same time, even if it falls on the belt 10, the fallen molten metal coagulated pieces and the water-soluble release agent are sent to the guide roller box 7 side with the movement of the belt 10 as the moving die plate 1 advances and retreats. The gutter 16 which is removed by the wiper 15 located at the upper end of the member 13 forming part of the sliding plate 3 and falls down to the lower side of the stepped slide plate 3 and then the gutter 16 adjacent to the lower side is removed. It flows out to a waste box (not shown). The width of the belt 10 is larger by a small dimension w on both sides than the width of the sliding surface 3a, and since the wiper 11 fixed to the upper part of the sliding plate 3 is in sliding contact with the back surface of the belt 10, the sliding surface 3a There is no infiltration of the molten metal coagulation pieces and the water-soluble release agent into the sliding surface 3a, and there is no mixing with the lubricating oil on the sliding surface 3a. Further, the molten metal coagulated pieces and the water-soluble release agent that have fallen onto the guide roller box 7 having the fully closed structure also flow out to the waste box (not shown) through the gutter 16.

[0013]

As described above, according to the dust-proof structure of the sliding surface of the present invention, the sliding surface has a fully-closed structure, so that the dust-proofing effect is high, and there is no wear member, so that it can withstand long-term use. . Further, since the incorporation of a water-soluble release agent can be prevented, it is not necessary to treat the emulsified waste liquid by mixing with a lubricating oil.

[Brief description of the drawings]

FIG. 1 is a view showing this embodiment, and is a cross-sectional view at right angles to a sliding direction of a sliding surface.

FIG. 2 is a side view of FIG.

FIG. 3 is an enlarged perspective view of a guide roller box.

FIG. 4 is a view showing a mold clamping portion of the die casting machine employing the present embodiment.

FIG. 5 is a side view of a die casting machine employing the present embodiment.

[Explanation of symbols]

 Reference Signs List 1 moving die plate 2 sliding foot 3 sliding plate 4 machine frame 5 recess 6 space 7 guide roller box 8 guide roller 9 metal fitting 10 belt 11 wiper 15 wiper 16 gutter 31 fixed die plate 32 tie bar 33 mold clamping cylinder

Claims (2)

(57) [Claims] 1. A sliding plate as a sliding surface of a movable die plate fixed to a machine frame of a die casting machine, and a concave portion provided on the back surface of the sliding surface of the sliding plate over the entire length to face a facing machine frame. A guide roller box abutted on the machine frame by abutting against both end surfaces of the sliding plate in the sliding direction, a guide roller rotatably supported in the guide roller box, and a sliding portion. A sliding foot that slides on the plate and is attached to both lower sides in the width direction of the movable die plate, a belt end is fixed to both ends of the sliding foot in the sliding direction, and a guide roller is wound around the sliding foot to form a space. A dustproof structure for the sliding surface, comprising a belt that has passed through, and sliding the belt over the entire length and width of the sliding surface. 2. The belt according to claim 1, wherein the width of the belt is wider than the width of the sliding surface, and overhang portions are formed on both sides in the width direction of the sliding surface, and a wiper sliding on the overhang portion slides. Dust proof structure for sliding surface, which is attached over the entire length of the surface.