JP5570784B2 - Resin molding equipment - Google Patents

Description

  The present invention relates to a resin molding apparatus of a type in which a molded product obtained by press-molding a sheet-like resin material into a predetermined shape by a vacuum molding machine or the like is cut into a product and scrap, and then the scrap is pulverized by a pulverizer.

  For this type of molding apparatus, for example, the technique disclosed in Patent Document 1 is already known. In this technique, a sheet-shaped resin material is molded into a predetermined shape in a press molding process, and the molded product is cut into a product and scrap in a trimming process. In the trimming process, scraps are paid out toward the crusher separately from the product, and the scrap is crushed in the crusher.

JP-A-2005-219301

  When scrap is pulverized by a pulverizer, the crushed debris scatters to the trimming process and the pressing process, causing defective products. As a countermeasure against this, the pulverizer is arranged away from the trimming process or incorporated in a deep pit, which increases the installation space for the resin molding apparatus. For this reason, it cannot respond to the resin molding apparatus aiming at the compactness of an installation.

  The present invention is intended to solve such a problem, and its purpose is to prevent the occurrence of defects such as defective products even if the pulverizer is placed close to the trimming process, and the resin molding apparatus It is to reduce the installation space.

The present invention is for achieving the above object, and is configured as follows.
A resin molding apparatus configured to cut a molded product press-molded from a sheet-like resin material into a predetermined shape into a product and scrap in a trimming process, and then pulverize the scrap by delivering it to a pulverizer. Is provided with a slider rail for placing scraps separated from the product and operating them from a horizontal state to an inclined state, thereby delivering the scraps toward the inlet of the crusher. The crusher is provided with a shutter that opens and closes its inlet. The shutter is fixed to a shutter shaft that is rotatably supported by the pulverizer, and a shutter lever is fixed to the shutter shaft.
Rollers supported on the shutter lever, has always contacts the lifting block to lift in conjunction with the operation of the slider rails, only when the slider rail in order to pay out the scrap is operated in an inclined state from the horizontal state The shutter lever is rotated together with the shutter shaft when the elevating block is interlocked with the shutter, so that the shutter opens the inlet of the pulverizer.

According to this configuration, while the scrap is being pulverized in the pulverizer, the input port is closed by the shutter, and it is possible to prevent the pulverized crushed waste from being scattered into the trimming process and the press molding process. As a result, even if the crusher is placed close to the trimming process, it is possible to avoid problems such as the occurrence of defective products. It is not necessary to install the resin molding apparatus, and the installation space for the resin molding apparatus can be reduced accordingly.
In addition, when the slider rail operates in an inclined state in order to dispense scrap from the trimming process, the shutter is opened in conjunction with this, so a dedicated drive source for opening and closing the shutter becomes unnecessary. Of course, it becomes easy to set the timing of scrap dispensing and shutter opening / closing.

The front view showing the outline | summary of the resin molding apparatus. The front view which expanded and represented a part of resin molding apparatus. Sectional drawing showing the grinder. The perspective view which represented the grinder from the inlet side. The perspective view which represented the grinder from the back side of the inlet. The skeleton figure showing the interlocking composition which operates a shutter.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
In the resin molding apparatus shown in FIG. 1 and FIG. 2, a sheet-shaped resin material is press-molded into a predetermined shape in a molding process (not shown) located on the back side of the paper, and then the illustrated shape is shown. It is sent to the trimming process (trimming machine 10). The trimming machine 10 includes an upper mold 14 and a lower mold 16 that can be moved up and down individually along the column 12 of the molding apparatus.
That is, the upper mold 14 and the lower mold 16 are clamped and opened by driving the respective cylinders 15 and 17. Then, when a molded product is fed between the upper mold 14 and the lower mold 16 and clamped, the molded product is cut into a product (not shown) and a scrap 50 (FIG. 2).

When the upper mold 14 and the lower mold 16 of the trimming machine 10 are in the mold open state, the product is adsorbed and raised by the upper mold 14 side by vacuum suction, and the scrap 50 is left on the lower mold 16 side. Yes. Then, the product adsorbed on the upper mold 14 side is dropped onto a shooter (not shown) of the product delivery unit in the trimming process and delivered to the side of the molding apparatus (right side in FIG. 1).
On the other hand, the scrap 50 is paid out by the slider rail 20 shown in FIG. 2 toward the pulverizer 30 disposed on the side of the molding apparatus (the right side in FIGS. 1 and 2).

Both ends of the slider rail 20 are connected to rods of elevating cylinders 22 and 24 fixed to the support column 12 on both sides of the molding apparatus. Therefore, the slider rail 20 can be moved up and down by the control of the lifting cylinders 22 and 24. Further, as shown by a solid line in FIG. 2, the slider rail 20 can be tilted by control of pulling the rod of one lifting cylinder 22 and pushing the rod of the other lifting cylinder 24.
The slider rail 20 receives the scrap 50 remaining on the lower mold 16 side from the lowermost position at the lowest position, and rises to a position indicated by an imaginary line in FIG. Thereafter, the scrap 50 can be paid out toward the crusher 30 by inclining the slider rail 20 as shown by the solid line in FIG.

As shown in FIGS. 3 and 4, the housing 32 of the pulverizer 30 has a box shape having an input port 34 for scrap 50, and a plurality of pulverizers that are rotationally driven by a motor or the like (not shown) therein. A gear 36 is provided. The housing 32 is provided with a plate-like shutter 40 for opening and closing the insertion port 34. The shutter 40 is fixed to a shutter shaft 42 rotatably supported on both side walls near the input port 34 in the housing 32, and the input port 34 can be opened and closed by rotating together with the shutter shaft 42. Yes. A buffer piece 40a is attached to the lower end of the shutter 40 by a hinge 40b. As shown in FIG. 3, the buffer piece 40a alleviates the impact even when the shutter 40 when the insertion port 34 is closed interferes with the lower edge or the like of the insertion port 34, and reliably blocks the insertion port 34. Fulfills the function of
It should be noted that a rotational force in the clockwise direction in the drawing (the direction in which the insertion port 34 is closed) acts on the shutter shaft 42 mainly based on the dead weight of the shutter 40.

As shown in FIGS. 4 and 5, one end of the shutter shaft 42 penetrates the side wall of the housing 32 and protrudes outward. The shutter lever 44 is supported on the protruding portion of the shutter shaft 42, and the shutter shaft 42 and the shutter lever 44 are fixed by fastening the nut 46. A roller 48 is rotatably supported at the tip of the shutter lever 44. The roller 48 is always in contact with the elevating block 26 shown in FIG. 5 due to the rotational force acting on the shutter 40.
The lifting block 26 moves up and down in conjunction with the operation of the slider rail 20 by the lifting cylinder 24 located on the right side of FIG. 2 among the lifting cylinders 22 and 24 that control the lifting and lowering of the slider rail 20 as described above. It has become. That is, when the slider rail 20 is operated from the horizontal state indicated by the phantom line in FIG. 2 to the inclined state indicated by the solid line, the elevating block 26 is lowered, and when the slider rail 20 is operated from the inclined state to the horizontal state, the elevating block 26 is raised.

As shown by the phantom line in FIG. 6, the shutter lever 44 when the elevating block 26 is raised is held at the rotational position where the shutter 40 closes the inlet 34 of the pulverizer 30. Therefore, when the elevating block 26 is lowered from the position indicated by the phantom line in FIG. 6, the shutter lever 44 is rotated together with the shutter shaft 42 to the position indicated by the solid line in FIG. As shown by the line, the inlet 34 is opened. As a result, only when the slider rail 20 operates from the horizontal state shown by the phantom line in FIG. 2 to the inclined state shown by the solid line and the scrap 50 is dispensed, the shutter 40 opens the inlet 34 of the crusher 30. The slot 34 is closed by the shutter 40 at other times.
The shutter lever 44 is provided with a plurality of adjustment shaft holes 45 through which the shutter shaft 42 is inserted (FIGS. 4 and 5). By selecting these adjustment shaft holes 45 and inserting the shutter shaft 42, the distance between the axis of the shutter shaft 42 that is the rotation fulcrum of the shutter lever 44 and the roller 48 can be adjusted.

In the molding apparatus configured as described above, when the scrap 50 separated from the product in the trimming machine 10 is dispensed by the slider rail 20 operated in the inclined state shown by the solid line in FIG. Is opened, and the scrap 50 is put into the pulverizer 30. Then, when the slider rail 20 operates in a horizontal state indicated by a virtual line in FIG. 2, the insertion port 34 is closed by the shutter 40 as indicated by a solid line in FIG. 3. Therefore, while the scrap 50 is being pulverized by the pulverizer 30, it is possible to prevent the pulverized waste from being scattered to the trimming machine 10 and the press molding process in the trimming process. As a result, it is no longer necessary to dispose the crusher 30 away from the trimming machine 10 as in the past, or to provide a deep pit and incorporate the crusher 30 therein, thereby reducing the size of the resin molding apparatus. It becomes possible.
As already described, the shutter 40 opens the inlet 34 of the pulverizer 30 in conjunction with the slider rail 20 operating from the horizontal state to the inclined state, and when the slider rail 20 returns to the horizontal state, the weight of the shutter 40 and so on. Thus, the insertion port 34 is closed, so that a dedicated drive source for opening and closing the shutter 40 becomes unnecessary. In addition, it becomes easy to set the timing of the scrap 50 payout by the operation of the slider rail 20 and the opening / closing of the insertion port 34 by the shutter 40.

10 Trimming Machine 20 Slider Rail 30 Crusher 34 Input Port 40 Shutter

Claims (1)

It is a resin molding apparatus configured to cut a molded product press-molded from a sheet-shaped resin material into a predetermined shape into a product and scrap in a trimming process, and then pulverize by scraping this scrap to a pulverizer,
The trimming process, by operating by placing a detached from the product scraps from a horizontal state to an inclined state, the scrap slider rails to be paid out toward the inlet of the crusher is provided with, on the grinder, the A shutter that opens and closes the inlet is provided. This shutter is fixed to a shutter shaft that is rotatably supported by the pulverizer, a shutter lever is fixed to the shutter shaft, and a roller that is supported by the shutter lever is a slider rail. of which always contacts the lifting block to lift conjunction with the operation, only when the slider rail in order to pay out the scrap is operated in an inclined state from the horizontal state, the shutter lever shutter by lowering of the lifting block interlocked therewith It rotates with the shaft, as the shutter opens the inlet of the crusher Constant has been that the resin molding apparatus.

Images