JPS6124166B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for treating spool runners generated during plastic molding. A typical plastic molding factory is equipped with a large number of molding machines to enable mass production of plastic molded products, but these plastic molding machines discharge a large amount of spool runners. Therefore, as a conventional method for processing spool runners discharged from these molding machines, for example, as shown in Fig. 1, a side conveyor B is used to transport the spool runners for each molding machine A that is installed in large numbers. Furthermore, each side conveyor B is placed at the end of each side conveyor.
The spool runners transferred by each side conveyor B are supplied to a crusher D by the main conveyor C, and are crushed by the crusher D. The spool runners were sorted by sorter E and then stored in storage F. Therefore, in the conventional spool runner processing method, the spool runners discharged from each molding machine are transported in a relatively large size without changing their original shape until they are supplied from the side conveyor B to the crusher D. Because of this, it is necessary to install a side conveyor or main conveyor that is wide compared to the processing capacity, and in the case of a crusher, the input diameter must be set large, so the spool runner The installation space for the processing equipment became large, and there were restrictions in terms of layout.

The present invention was made to solve this problem, and its gist is that a coarse crusher is installed in each molding machine instead of the side conveyor described in the conventional example, and that the waste is discharged from each coarse crusher. By pneumatically transporting the crushed material through a pipeline, the cost and area of conventional conveyor equipment can be reduced, and the processing of spool runners can be streamlined.

The present invention will be explained in detail below based on the embodiment shown in FIG.

Reference numeral 1 indicates a large number of plastic molding machines (injection molding machines), each of which is equipped with a crusher 2. Each crusher 2 is connected to a common pneumatic conveying pipe 3, and each The coarsely crushed material crushed by the crusher 2 is transferred to the crusher 4 through a pneumatic conveying pipe.
It is designed to be supplied to the collecting cyclone 5. Reference numeral 6 denotes a sorter for sorting the crushed material crushed by the crusher, 7 a hopper for storing the resin sorted by the sorter 6, and 8 a cyclone that sucks and collects the crushed material in the air transport pipe 3. Although the suction blower is used to guide the air into the air 5, the air transport means using the suction blower may be an air transport means using a pressure-feeding blower.

The above is the structure of the spool runner processing device according to the present invention.Next, its operation will be described. First, the spool runners discharged from each molding machine 1 are roughened by dropping means or robot means (not shown). It is put into a crusher 2 and is crushed into particles by the crusher 2. This crushed material is fed into a common pneumatic transport pipe 3, and the crushed material placed in this pneumatic transport pipe 3 is fed into a collection cyclone 5 by means of transport by pumping or suction. The crushed material put into the collection cyclone 5 is crushed by the crusher 4 and then passed through the sorter 6.
The spool runners are sorted and supplied into the hopper 7, where the spool runners are pulverized, and the spool runners taken out from each molding machine 1 are pulverized and stored.

As described above, the spool runner processing method according to the present invention includes installing a spool runner crusher for each injection molding machine, and further crushing the spool runners by each crusher through a pneumatic transport pipe. The present invention has the following effects because it is supplied to a crusher by means of transportation and subjected to crushing treatment.

(A) After being coarsely crushed by the spool runner crusher 2, it is supplied to the crusher 4, so the crushing capacity of the crusher may be lowered. can also be made smaller.

(B) The miniaturization of the crusher has the effect of making it easier to incorporate a sorter and metal separator into the system.

(C) Since the means of transportation of the spool runner is by pipeline, space can be used more effectively than the conventional means of transportation using conveyors, so the installation space can be reduced and equipment costs are low. Furthermore, since the transportation route is a closed system, there is no contamination of foreign substances in the transportation route, and pollution such as noise, air pollution, and bad smells can be eliminated.

(D) The spool runner is coarsely crushed in the first stage and crushed in the second stage, so the crushed particle size is constant.
Miscut items can be reduced.

(E) Since the crushed spool runners are transported by air, there are no problems such as the spool runners getting caught or getting stuck behind the belt, which tend to occur when using conventional conveyors.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional conveyance processing device;
FIG. 2 is an explanatory diagram showing an embodiment of the conveyance processing apparatus according to the present invention. 1... Injection molding machine, 2... Crusher, 3... Air transport pipe, 4... Grinding machine, 5... Collection cyclone, 6... Sorting machine, 7... Hopper, 8... Suction blower.

Claims (1)

[Scope of Claims] 1. A spool runner drawn out from a resin molding machine is crushed by a crusher, and then air transported to a crusher via a pipeline, and then the crushed product by this crusher is sorted. A method for processing a spool runner, characterized by storing the spool runner. 2. A crusher is installed in each of the plurality of resin molding machines and crushes the spool runner drawn out from each resin molding machine, and a crusher is connected to each raw material outlet of these crushers, It is characterized by having a transportation path for pneumatically transporting the crushed material through a pipe, a crusher for crushing the coarsely crushed material transported by the pneumatic transportation path, and a sorter for sorting the crushed material by the pulverizer. Spool runner processing equipment.