JPH0226601Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention uses compressed air to dispose of chips generated during machining processes, especially large steel scraps and permanent chips that are generated when steel materials are turned or milled. The present invention relates to a cutting device for conveying chips suitable for use when conveying chips.

[Conventional technology]

The metal materials processed at the machine shop include FC castings,
There are many types of metal materials such as Al castings, steel, gunmetal, etc., but dust and chips of various metal materials generated by cutting etc. can be collected by transporting them using a special chip conveyor or by collecting them in dust cans (pallets). was accepted and processed. However, the method of transporting and collecting chips using a dedicated chip conveyor or belt conveyor requires high equipment costs. The equipment layout is fixed and the destination cannot be changed freely. If the conveyor has an open structure, dust and chips will fall and scatter. In addition, the method of installing dust cans for each cutting machine or every few cutting machines and collecting them directly takes time and effort. Removal space for dust cans is required, which limits equipment layout. Unable to respond to changes in chip amount. Dumping at a waste site and transporting it is time-consuming. There is a strong possibility that it will be re-dispersed during transportation. Various problems arose.

[Problem that the invention attempts to solve]

Therefore, a duct for air transport is installed in the chip discharge section or cleaning section of the machine tool, and the chips, etc. are collected by the air force flowing inside the duct, and the chips, etc. are collected from various locations and disposed of at the waste collection site. A type pneumatic transport system was developed. According to this system, since the conveyance section is only a duct, the conveyance route can be changed freely. Installation is possible in narrow spaces and construction is simple. No scattering during transportation. Centralized chip processing and batch automatic processing are possible. It has the characteristics of being able to exhibit various advantages such as, and solving the various problems mentioned above. However, the above-mentioned pneumatic transportation system can only transport and process dust, casting chips, or chips cut into small pieces using a crusher, etc. Large steel scraps and permanent chips can cause bridging and get caught at the entrance of the duct or in the middle, so unless they are shredded with a crusher or the like, they cannot be transported or recovered as is.

[Means to solve the problem]

The present invention was developed in view of the above-mentioned points, and its purpose is to cut large steel scraps or permanent scraps into small pieces while cutting them into small pieces while cutting them into pneumatic transport ducts. The purpose of the present invention is to provide a cutting device for conveying chips that is devised so that the chips can be fed into the hopper that receives the chips generated during the machining process. At the bottom of the hopper, a gutter body with a substantially U-shaped cross section and whose tip end is connected to an air transport duct is installed. The inside of the hopper has a cantilevered structure with its root end supported by a bearing provided on the hopper and its tip side protruding toward the air transport duct, and also has a feeding tube with a rectangular cross section on its circumference. This is achieved by attaching a feed screw shaft having a spirally protruding lead so as to be rotatable and forming cuts in the feed lead at intervals.

[Example of idea]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the cut-out device for conveying chips according to the present invention will be described in detail below with reference to the accompanying drawings. In the figure, 1 is a hopper equipped with the cutting device of the present invention, and inside the hopper 1, large steel scraps and permanent chips are collected using a conveying means (not shown) such as a chip conveyor or a belt conveyor. (not shown) is configured to be transportable. 2 is a stirring shaft installed inside the hopper 1, and 3 . . . indicates stirring blades attached to this shaft 2. Reference numeral 4 denotes a lower gutter body of the hopper 1 formed into a substantially U-shaped cross section, and the tip opening 4a of the gutter body 4 is connected to an air transport duct AD piped near the proposed device;
The AD is supplied with compressed air that pneumatically transports the chips sent into the duct AD towards the waste collection site (tank). In Figures 1 to 3, 5 is the hopper 1 mentioned above.
A feeding screw shaft is rotatably installed in the bottom gutter body 4 of the hopper, and a rotating shaft 6 is inserted and connected to the bearing hole 5a at the root end, and the rotating shaft 6 is supported in a bearing 7 provided on the hopper 1 side. As a result, a feeding lead 5R having a square (rectangular) cross section is spirally protruded from the circumferential surface of the screw shaft 5 supported in a cantilevered structure within the gutter body 4. 5T... are notches formed at intervals in the square lead 5R,
These incisions 5T... draw in and cut the elongated chips. 5b is the tip of the screw shaft 5 configured as described above, and as shown in FIG.
protrudes toward the air transport duct AD. Reference numeral 10 denotes a motor that rotates the stirring shaft 2 and the rotating shaft 6 in conjunction with each other via a required transmission mechanism 11 consisting of a sprocket, a chain, and the like. Since the cut-out device for conveying chips according to the present invention has the above-described configuration, the chips such as steel scraps and permanent chips are carried into the hopper 1 using a conveyor, or when they are carried into the hopper 1, the motor 10 When the stirring shaft 2 is driven and rotated, the stirring shaft 2 rotates, and the stirring blades 3 sequentially feed the carried chips to the bottom gutter body 4 side. Further, the rotating shaft 6 that rotates in conjunction with the stirring shaft 2 rotates the screw shaft 5, and the feeding lead 5R, which is spirally protruded from the circumferential surface of the shaft 5, is fed into the gutter body 4. Air transport duct for cutting chips
Send it to AD. At this time, each cut 5T formed in the feed lead 5R having a rectangular cross section catches the elongated chips as the feed lead 5R rotates and draws them into the gutter body 4, and the pneumatic transport duct
While transporting it towards the AD, it is cut into appropriate lengths to facilitate transport and pneumatic transportation.

[Effect of the idea]

As explained above, the cutting device according to the present invention sends the dust and chips generated by mechanical work into the pneumatic transport duct according to the rotation of the screw shaft, and sends them to the waste collection site or tank. However, it is possible to transport the waste to
In this invention, the feed lead spirally formed on the circumferential surface of the feed screw shaft has a rectangular cross section, and the screw shaft is configured to rotate in a cantilevered structure, so that it cannot withstand heavy loads. It has relief and can exhibit high strength, and even in the case of hard metal chips, transportation and recovery can be carried out smoothly for a long period of time without trouble. In addition, multiple notches formed at intervals on the feed lead
It catches the chips sent by the stirring blade,
Conventionally, this was pulled into the gutter body as the screw shaft rotated, and cut into small pieces while being conveyed toward the tip port attached to the air transport duct.
It is suitable for use in air transportation because it allows smooth pneumatic transport of large steel scraps, permanent scraps, and other chips, which have been thought to be impossible or almost impossible to transport by air.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of the cut-out device for conveying chips according to the present invention, and FIG.
A sectional view taken along line A, and FIG. 3 is a partially cutaway front view of the screw shaft. 1... Hopper, 2... Stirring shaft, 3... Stirring blade, 4... Gutter body, 4a... Tip opening, 5... Screw shaft, 5b... Tip, 5R... Feeding lead, 5T... ...notch, 7...bearing, 10...motor, AD...pneumatic transport duct.

Claims (1)

[Scope of utility model registration request] A stirring blade for sending the received chips downward is installed inside the hopper that receives chips generated in the machining process, and the bottom of the hopper has a substantially U-shaped cross section, and A gutter body is provided whose tip end is connected to the air transport duct, and inside this gutter body, the root end side is supported on a bearing provided in the hopper, and the tip side is directed toward the air transport duct. It has a protruding cantilever structure, and a feed screw shaft having a spirally protruding feed lead with a rectangular cross section on the circumferential surface is attached so as to be freely rotatable for driving, and the feed lead is provided with notches at intervals. A cutting device for conveying chips, characterized in that: