JP2510701Y2 - Chip crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a chip crusher that cuts and transfers curled long cutting waste discharged from a machine tool at a machining site or the like.

[Conventional technology]

Curl-shaped long chips generated as cutting chips in a machine tool are liable to be entangled with each other and bulky when they are accumulated, difficult to handle, and very inconvenient for storage or transportation.
Thus, conventionally, such cutting waste is made easier to handle, for example, by air-sucking and conveying it by cutting it into smaller pieces.

Then, a chip crusher is used for crushing this cutting waste. This type of chip crusher generally receives the cutting debris that is conveyed on a chip conveyor into a hopper, puts it into a cutter consisting of meshing rotary blades, cuts it, and sucks and conveys the cutting debris collected in a chute. I am supposed to do it.

[Problems to be solved by the device]

By the way, as a means of using the above-mentioned chip crusher, firstly, the chip crusher is continuously operated in conjunction with the operation of the machine tool, and the cutting waste discharged from the machine tool is successively carried into the hopper for processing. However, due to the capacity of the air suction pump for transportation, a plurality of tip crushers are installed in parallel for one suction pump to share this air source. Since it is difficult to do so, it is necessary to install a plurality of chip crushers each equipped with an air source at a work site where a large amount of cutting waste is generated, and this ensures the installation space and individual The high cost of the device diminishes the economic benefits of this debris treatment.

Therefore, in order to improve the economic efficiency by connecting the chip crushers in series, there is a means for sharing the air source including a suction pump.

That is, one of them is that when the cutting waste carried in the hopper of the chip crusher stays in a certain amount,
A means for starting the crusher mechanism and operating it for a certain period of time while cutting cutting chips, and opening the gate valve of the chute transfer port during this cutting operation to suck and carry out cutting powder in the chute. , By allocating the operating suction time zone in each chip crusher in a time-division manner, it is possible to use one suction pump effectively while sharing it with a plurality of chip crushers. According to this means,
The cutting debris temporarily staying in the hopper is entangled with each other to form a lump, which causes a bridge at the hopper exit, which may cause clogging of the hopper that prevents the cutting debris from falling after the fact.

In order to prevent such clogging of the hopper, the cutter part continuously operates to sequentially cut the cutting waste carried in, while there is a means for intermittently carrying out only the suction and carry-out operation from the chute. In some cases, the feeder device that is crushed and sent toward the cutting dust discharge port that accumulates in the hopper may not operate smoothly due to the cutting dust entering into the shell or the operating portion.

Then, this invention aims at development of the tip crusher which can be installed by sharing one suction pump.

[Means for solving the problem]

Therefore, according to the present invention, the object is to receive the cutting waste discharged from the machine tool in the upper hopper, drop the cutting waste toward the cutter, and suck and convey the cutting waste cut by the cutter from the lower chute. In the cutting waste processing mechanism configured as described above, the capacity of the hopper is configured to be large enough to allow the temporary retention of cutting waste, and the hopper is provided with a cutting waste retention detection sensor and a cutting waste pushing-down device. A suction gate valve that can be controlled to open and close is provided at the outlet of the chute, and the cutter and the pushing-down device are actuated and the valve is turned on only when the sensor detects that a predetermined amount or more of cutting waste has accumulated in the hopper. This can be achieved by arranging to open and transfer the cut chips.

[Action]

That is, the large-capacity large-sized hopper gradually functions as a temporary storage place for the scraps, since the cutting scraps successively fed by the chip conveyor or the like gradually accumulate on the large-scale hopper.

Then, the retention sensor arranged in the hopper observes the accumulation condition and issues an inspection signal when the retention amount reaches a predetermined amount, and at the same time starts the cutter and the cutting debris pushing device that were stopped until then. , Open the gate valve and start suction in the chute.

As a result, the cutting debris accumulated in the hopper is extruded from the hopper toward the cutter regardless of the occurrence of an inconvenient condition such as a bridged state in which the cutting debris falls. The extruded cutting chips are cut and crushed by the cutter that is operating.

The cutting dust crushed by this cutter falls in the shooter and is wound up in the intake flow as it is, and sucked sequentially.
Is discharged.

〔Example〕

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side view showing an embodiment of the present invention partially broken away. Cutting waste A discharged from a machine tool or the like is carried onto a hopper 2 of a main body 1 using a chip conveyor B or the like.

The hopper 2 has a large capacity that can sufficiently store a few picked-up quantities of the cutting waste A that are normally carried in per unit time.

Further, an optical or electric retention sensor 3 is arranged inside the large-capacity hopper 2, and an actuator operated by a fluid pressure such as compressed air or an electromagnetic operation is arranged at the upper edge of the hopper 2. Arrange the actuator 4,
A retainer 6 attached to the tip of the plunger 5 is provided so as to push the accumulated cutting waste A toward the discharge port of the hopper 2.

The lower part of the discharge port of the hopper 2 is a meshing rotary blade 7a, 7b.
When the sensor 3 detects that the amount of the cutting waste A is equal to or more than a fixed amount, the cutter is operated together with the operation of the pressing tool 6 by the actuator 4. Then, the cutter and the pressing unit 6 in operation are stopped except when the sensor 3 still detects the accumulation of the cutting wastes more than the fixed amount after the lapse of a certain time after the start, and when the amount of the accumulation is large, it continues to the next constant. It's designed to keep running for hours.

And, a bucket type chute 8 is provided in a falling area of the cutting wastes cut and crushed by the cutter,
In addition, a suction gate valve 9 whose opening and closing can be controlled is provided at the bottom discharge port connected to an intake source (not shown), and the valve 6
Is configured to be controlled to open and close in cooperation with the rotary blades 7a and 7b and the actuator 6.

Therefore, according to the embodiment having such a configuration, when the amount of the cutting waste A temporarily staying in the hopper 2 reaches a certain amount or more, the rotary blade 7a is detected by the signal from the sensor 3 which detects it. , 7b are started and the actuator 4 is started to push out the presser foot 6, so that the hopper 2
The cutting waste A inside is forcibly extruded toward the cutter and crushed. The crushed cutting waste falls into the hopper 2, and is sucked and discharged through the gate valve 9 whose opening is controlled at the same time when the cutter is activated.

This processing operation continues for a preset period of time, and while the sensor 3 is detecting the accumulated amount of accumulated cutting chips A in the hopper 2, the cutting chips are repeated while continuing the fixed period of time. Stop the retention of A at the digested stage.

[Effect of device]

 The present invention has the following effects.

The hopper capacity is configured to be large, and the cutting waste that is sent in is positively retained, and the accumulated cutting waste is forced out toward the cutter by the pushing-down device. It can prevent clogging.

Only when the amount of accumulated cutting waste reaches a certain amount by the stay detection sensor provided in the hopper, the cutter and the pushing device are operated in synchronization with the opening timing of the suction gate valve to open the gate valve of the chute. Since the cutting wastes that have been cut and crushed are sequentially sucked and discharged, it is possible to prevent the cutting wastes after cutting from intertwining with each other and forming a bridge.

A suction gate valve is provided at the carry-out port of the chute, and when this is closed, one air source can be used for another chip crusher. For this purpose, the intermittent operation timings of a plurality of chip crushers juxtaposed in parallel are controlled by a computer or the like so as to sequentially shift the accumulated cutting scraps in each hopper from the one having reached a fixed amount. Multiple tip crushers can be operated by a single air source intake pump,
It has an excellent effect in saving energy by controlling intermittent operation of the chip crusher, reducing the equipment cost by sharing the intake pump in the parallel crusher, and saving space on the factory site.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the chip crusher of the present invention partially broken away. [Explanation of symbols] 1 ... Main body, 2 ... Hopper 3 ... Stay sensor, 4 ... Actuator 6 ... Holder, 7a, 7b ... Engaging rotary blade 8 ... Shoot, 9 ... Suction gate valve

Claims (1)

(57) [Scope of utility model registration request] 1. A cutting waste processing mechanism adapted to receive cutting waste discharged from a machine tool into an upper hopper, drop the cutting waste toward a cutter, and suck and convey the cutting waste cut by the cutter from a lower chute. In the above, while the capacity of the hopper is configured to be large enough to allow the temporary retention of cutting chips, a sensor for detecting the retention of cutting chips and a device for pushing down cutting chips are provided in the hopper, while opening / closing control is possible at the outlet of the chute. A suction gate valve is provided, and only when the retention of cutting chips in the hopper by a predetermined amount or more is detected by the sensor, the cutter and the pushing-down device are operated, and the cutting chips opened by opening the valve are cut. Chip crusher designed to transfer