JPH0121774Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a material supply device for supplying heated and softened materials such as synthetic resins to a molding press.

Generally, when molding synthetic resin or other plate material into various shapes, the plate material is placed on a heating plate, etc., and heated to soften it, and the softened plate material is moved to the vicinity of the molding press by a conveyor, etc., and then transferred to a suction cup or a feeding robot. In the past, the plate material was fed from a conveyor to the mold of the forming press, or directly from the hot plate to the forming press, but since the plate material is flexible like a stretched rice cake, it is normal to use suction cups or feeding robots. It is extremely difficult to supply the sheet material accurately, causing wrinkles and misalignment, and the sheet material cools and hardens while being moved by the belt, making it difficult to form the sheet material.

For this reason, there is a method of supplying the unheated plate material to the mold of a forming press and then irradiating it with heat to soften the plate material, but with this method, molding cannot be performed until the plate material softens, and there is a waiting time. Since the process is long, time loss is extremely large, and the forming press must be equipped with a heating device for heating the plate material, which has disadvantages such as being expensive and complicated to operate.

The present invention eliminates the above-mentioned drawbacks, and provides a moving hot plate material supply device that allows the hot plate to be kept heated and fed to the forming press by moving the hot plate to the upper surface of the mold. The purpose is to

An embodiment of the present invention will be described below based on the drawings. 1 is a molding press body, 2 is a mold, and 3 is a material to be supplied to the mold 2. Reference numeral 4 denotes a frame of the supply device, and reference numeral 5 denotes a heating plate provided on the upper part of the frame 4 so as to be movable from side to side. The heating platen 5 is arranged so that it is smoothly supplied to the mold 2 of the molding press body 1 from above.
The height of the bottom of the heating platen 5 is slightly higher than the top surface of the mold 2, and the heating platen 5 can be moved left and right from the frame body 4 to the top surface of the mold 2, and the heating configuration of the heating platen 5 itself is The device is heated by putting a heater or steam inside it, and since this is already well known, further explanation will be omitted. The number of heating plates 5 is not limited to one, and another heating plate (not shown) which is movable up and down may be provided at a position opposite to the heating plate 5 to sandwich and heat the material 3 from both upper and lower surfaces. Reference numeral 6 denotes a drive device for moving the hot platen 5 left and right, and a cylinder 61 is used as the drive device 6 shown in FIG.
The rod 62 of the cylinder 61 is connected to the bottom of the heating plate 5. The stroke of the cylinder 61 is at least long enough to allow the hot platen 5 to move a distance up to the upper surface of the mold 2. Incidentally, the drive device 6 is not limited to the cylinder 61, but may be a crank, a rack/pinion, or the like. Further, the drive device 6 may be installed only on the frame 4 side. Reference numeral 7 denotes a stopper device attached to the upper side surface of the molding press body 1, and the stopper device 7 includes a cylinder 71, and a plate-shaped heat-resistant resin or the like that is slightly wider than the heating plate 5 at the tip of the cylinder 71. stopper 7
2, and the stopper 72 is moved up and down by the cylinder 71. Incidentally, although not shown, the cylinder 71 is operated by an operation switch or the like when the hot platen 5 moves to the upper surface of the mold 2.

Next, to explain the operation of the present invention, as shown in FIG. 2, the material 3 is placed on a hot platen 5 and softened to a desired hardness (see FIG. 2a). Then, the cylinder 61 is driven and the hot platen 5 is moved toward the mold 2. When the hot platen 5 reaches the upper surface of the mold 2, the cylinder 71 of the stopper device 7 is driven downward to lower the wide plate-shaped stopper 72 slightly behind the softened material 3 (see Figure 2b). . When the stopper 72 has finished lowering, the cylinder 61 is driven to return the hot platen 5 to its original position, but at this time, the softened material 3 on the hot platen 5 is held down by the rear end of the material 3 by the wide stopper 72. As a result, only the heating platen 5 returns, and the material 3 is smoothly placed and supplied onto the mold 2 surface from the tapered tip edge 5a of the heating platen 5 [see Figure 2c]. . Next, when the supply of the material 3 is completed, the stopper 72 and the heating platen 5 return to their original positions to finish supplying the material 3 (see FIG. 2d). FIG. 3 shows another embodiment in which a conveyor 64 is placed on a table 63 that moves left and right by a drive device 6.
The hot platen 5 is placed close to the bottom of the heat-resistant belt 64a to which the projecting piece 64b is fixed, and the material 3 is placed thereon with the heat-resistant belt 64a interposed therebetween (see FIG. 3a). Then, the entire conveyor 64 is moved to the upper surface of the mold 2, and the tip of the stopper device 7 for fixing the vertically moving sheet, which is attached to the upper side surface of the molding press body 1, descends after the protrusion 64b of the heat-resistant belt 64a, and the heat-resistant A part of the belt 64a is fixed (see FIG. 3b). Then, when the table 63 begins to return to its original position, the heating plate 5 and the conveyor 64 are also returned, but the heat-resistant belt 64a of the conveyor 64 is removed from the projection 64b.
The heat-resistant belt 64 rotates and is fixed
The material 3 placed on top of a begins to be placed on top of the mold 2 [see Figure 3c]. When the material 3 is completely placed in the mold 2, the conveyor 64 is returned to its original position, and the projecting piece 64b of the heat-resistant belt 64a is also moved back to the conveyor 64 by an appropriate returning device (not shown) such as a motor, a spring, etc. is reversed and returned to its original position, and the stopper device 7 is also pulled up to its original position (see Figure 3d). Note that this method of supplying the material 3 is effective in supplying thin materials because no force is directly applied to the material 3.

In this way, the present invention moves the material 3 together with the heating platen 5 to the mold 2, so that the material 3 softened by heating is not cooled during the movement and is heated to the upper surface of the mold 2 of the molding press body 1. The forming work effect is extremely good because the material 3 is supplied to the hot platen 5, and the material 3 is not sucked or held by suction cups or feeding robots, etc.
Since the material 3 is directly fed from the mold 2 to the mold 2, it is now possible to feed the softened material 3 to the mold 2 of the molding press body 1 without causing wrinkles or shifting, which was previously difficult. There is no movement seen in robots or the like, and the device itself is very compact, making it easy to connect to the molding press body 1 and taking up little space, and its practical effects are great.

[Brief explanation of the drawing]

The drawings show an embodiment of the moving hot platen material supply device according to the present invention, and FIG. 1 is a schematic front view;
Figures a, b, c, and d in Fig. 2 are explanatory views of material supply by movement of a hot platen, and a, b, c, and d of Fig. 3 are explanatory views of material supply in another example of the present invention. 1... Molding press body, 2... Mold, 3... Material, 5... Heat plate, 6... Drive device, 7... Stopper device.

Claims (1)

[Scope of utility model registration request] A material supply device that supplies a heated and softened material 3 such as a synthetic resin to a mold 2 of a molding press main body 1, which moves at least a heating plate 5 left and right to the upper surface of the mold 2 of the molding press main body 1. 1. A moving hot platen material supply device comprising a drive device 6 for feeding the material 3 onto the upper surface of the mold 2.