JPS61244496A - Automatic cutting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Use The present invention relates to a continuously advancing string of extruded solid material, especially soap or similar vertical material.
trand) into pieces automatically.

PRIOR ART A cutting machine with such an operating configuration has been shown and described in previous patent applications in the name of the same patentee; i.e. in said machine the cutting member is of the guillotine type with relative counterwings. It fits into a frame that holds a device that reciprocates the blades. Provision is made to allow the frame to move over a length in the direction of progress of the string to allow continuous forward movement of the string to be cut. The said patent application also describes a suitable device for guiding the string and for measuring the forward movement of the string, from which precise pulses operate guillotine-type vanes. It will control the device.

Although certainly presenting a valuable technical and working configuration, the said cutting machine, however, is equipped with a device for holding the pieces in the course of being cut, corresponding to a cross-section in which the blades move approximately parallel to the string. i.e. this makes the machine unsuitable for cutting pieces shorter than a certain length.
In addition to this, the cutting machine has only one row of idle rollers for guiding and supporting the already cut pieces, which are pushed forward by one other, so that the machine They cluster together at the exit, sometimes arriving stuck together, causing problems in subsequent processing.

Problems to be Solved by the Invention The present invention attempts to eliminate the above-mentioned disadvantages, and for this purpose it uses a continuous string, a piece being cut, and a piece already cut. A cutting machine of the above-disclosed type is proposed, with a conveyor belt intended to convey the material and which is driven at a speed faster than the speed at which the string is advanced, in which a cutting machine of the guillotine type is proposed. The cutting unit operates in cooperation with said belt, such that the pieces are cut directly on the belt itself, the active tension of the belt being supported by a stationary table which is slidably supported. .

The foregoing geometry allows the machine according to the invention to cut pieces of any predetermined length and deliver them to the outlet in suitably spaced relation.

Preferably to solve the problem, the cutting unit of the cutting machine according to the invention is simply fixed to a support hawk connected to a reciprocating drive, generally consisting of a double-acting air cylinder fitted into a fixed structure of the machine. the supporting hawks are hinged in such a way that the vanes can perform a translational movement that is parallel to the direction of the forward movement of the string, so that during the cutting stage the blades are The object moves forward continuously, while returning to its initial position when the cutting is completed. The extremely light construction of the cutting tool knit allows this unit to be moved at very high speeds, which is extremely beneficial to the productivity of the machine.

According to another feature of this invention, the device for manipulating the vanes is controlled by a pulse generator unit that senses the degree of forward movement directly from the string. Thanks to the measuring and control unit described above, the cutting machine according to the invention is able to cut pieces of cord-like material of predetermined length with appreciable tolerances.

These and other features of the invention and the advantages arising therefrom will be illustrated by way of non-limiting example and in the accompanying drawings. : will become apparent in the following detailed description of one preferred embodiment, which is made by reference to the following detailed description of one preferred embodiment.

1 and 2 in particular, a predetermined length of a continuously forwardly moving extruded string B, preferably a string of semi-solid material such as soap, is shown. A cutting machine according to the invention is shown, adapted to cut a piece P of a wood.

The cutting machine has a horizontal Hunbear belt 1 guided around two rollers 2 and 3 which fit between two opposite longitudinal side walls 4 which are held by a box-shaped base frame 5 of the machine.

The active tension 101 of the belt 1, ie the upper surface of the belt, which carries both the supplied string B and the already cut pieces P, is made of a material such as a suitable phenolic resin, for example. It is supported along its entire length by an underlying stationary table 6 made of a material with a low coefficient of sliding friction, on which the tension of the belt can easily slide.

The rollers 2 of the conveyor belt 1 are driven by a suitable chain drive 7 by means of a gear motor 8 housed in a box-shaped base frame 5.
The gear motor advances the belt in the direction of arrow F at a faster rate than the rate at which the string B is fed in the coincident direction. This allows the belt 1 to slide continuously against the extruded string B, primarily because the cut pieces P passed from the machine are spaced apart.

A guillotine which can cut the string B into pieces P directly on the belt itself by using it as an opposing device, the tension of the belt being suitably supported by a table 6 with a large lubricity. A type of cutting unit 9 operates in cooperation with the belt 1.

The cutting unit 9 straddles the belt 1! It has a vane holding fork 109 arranged in a vertical position close to the idle roller 3, above the belt 1, at the upper end of the fork, said fork holds the cutting vane 209t, and at the lower end the fork holds the cutting vane 209t on both sides. The actuating air cylinder 1 (B) is pivotally pivoted at 110 to the limit of the piston rod, and the air cylinder moves from a position where the blade is completely out of the tension 101 of the belt 1 to a position where it touches said tension of the belt. Move alternately until

The air cylinder 10 is fixed to a plate 11 which is attached so that it can be aligned along a vertical guide 111 integral with the base frame 5, so that the belt 1 tension lo1 to feather 1
The former, the air cylinder, can be fixed by a maximum distance of 0.09.

Adjustment of the height of the plate 11 and thus of the vane 209 can be done manually using a simple mechanical device 12. Preferably, said device 12 is rotatably held by a fixed structure of the machine and has a vertical threaded shaft 112t which engages a respective threaded bushing 212 integral with the plate 11. The screw shaft 112 rotates via a pair of bevel gears driven by a handle 412.

During the waiting phase, the vane retaining hawk 109 is in a completely vertical position 1, as shown in solid lines in FIG.

During the cutting phase, in order not to disturb the continuous forward movement of the string, the vane retaining hawk is driven forward, as shown in phantom in FIG. 1, around the pivot shaft 11(B). Because the hawk pivots in the opposite direction, its wings trace an arc of a circle with a relatively large radius.

Thus, at the end of the cutting stroke of the vane, the table 6 supporting said tension of the belt is tilted downwards by a small angle in order to prevent the vane from cutting into the active tension 101 of the belt 1. The small angle is sufficient to accommodate the slight sinking of the blade.

Of course, the fixed limit stop member 13 acts in conjunction with the cylinder 10, while the hawk 109 has a lower end provided with a small 7 flange 119t- for striking the instantaneous contact member 129, so that the hawk can complete the cutting cycle. Once completed, it returns to the standby position.

Through the solenoid valve 14, the air cylinder 10 is supplied with pressurized air from a high pressure chamber 15. This ensures that air is released from the cylinder 10 at a constant pressure.

It is important to note that the connection between the reservoir 15 and the cylinder 10 is completed with a short joint and a single pipe length 16, preferably of polysine.

The solenoid valve 14 of the air cylinder 1 (B) is particularly
It is actuated by a control device 17 adapted to sense the forward movement of the string B as shown.

Said control device is integral with the plate 11 at its lower end and has an upwardly curved support arm 1 which holds two spaced apart idle rollers 19 and 20 at its upper end.
8t-, and the idle roller has an extruded string B
It is intended to carry a load, and the supporting arm is held against the belt 1 below. Roller 2 (B)
A lever 21, which holds the actual appropriate sensing and control unit, is freely swingably mounted on the shaft 120 of the device.

The unit has a roller 22 disposed between the other two rollers 19 and 2(B) to be supported so as to swing freely on the string B, and the rollers 22 are A pulse generator 23 is connected to the machine 24, so that the adder transmits a control signal to the solenoid valve 14 in correspondence with the degree of forward movement of the string B.

By adjusting the control unit, any desired length of the piece P can be obtained.

The return of the cutting unit 9 to the standby position is controlled by a microswitch 117 operating in cooperation with the hawk 109.

One inlet face of the machine is equipped with two suitably spaced inlet rollers 25 with vertically arranged axes, which rollers are adapted to guide the extruded string B laterally. There is.

The cutting machine according to the invention has a transparent cover 26 with associated microswitch which stops the machine whenever the cover is raised.

Effects of the invention From the above it is clear that the cutting machine according to the invention has a number of advantages compared to similar known cutting machines, which are: It is possible to cut even long pieces of cord, which are supported and guided throughout the entire movement through the machine, especially in the cutting area; and by means of a very light and simple cutting unit. A very rapid succession of cuts is possible; the cut pieces can be shown to be spaced apart; and the whole machine is of fairly simple construction.

[Brief explanation of the drawing]

1 is a side elevational view schematically showing a cutting machine according to the invention in cross section; FIG. 2 is a front view of said machine taken along the line 11-1 of FIG. 1; FIG. 3 shows the cutting device. FIG. 4 is a side elevational view of the controlling unit; and FIG. 4 is a corresponding top view of said control unit, with parts shown in section. (Explanation of symbols) 1... Bell, 2, 3... Roller, 4... Side wall,
5... Base 7 frame, 6... Table, 7... Chain drive, 8... Gear motor, 9... Cutting unit, 10... Air cylinder, 11... Play, 1
2... Mechanical device, 13... Stop member, 14... Solenoid valve, 15... Tight high royal court, 16... Pipe length,
17...Control device, 18...Supporting arm, 19.20
...Idle roller, 21...Lever, 22...
roller, 23...pulse generator, 24...adder,
25... Roller, 26... Cover, 101... Tension, 109... Hawk, 110... Pivot shaft, 111
... Guide, 112... Heart lit, 117...
Micro switch, 119...Flange, 120...
・Shaft, 129...adjacent member, 209...cutting blade,
212... Bush, 312... Bevel gear, 4.12.
・・Handle, B・String-like object, F・Arrow, P・
...piece. Agent Masao Miyake and 1 other person q])

Claims (11)

[Claims] (1) In an automatic cutting machine for cutting into pieces (P) a continuously advancing string (B) of e.g. extruded semi-solid material, in particular soap and materials of similar consistency; The cutting machine cuts a continuous string (B);
a substantially horizontally arranged device for transporting the part being cut and the part already cut (P) and driven at a speed faster than the speed at which the string (B) is advanced; a conveyor belt (1) and a stationary table (6) operating in cooperation with said belt (1) and placed underneath for sliding;
By using as an opposing device the active tension (101) of the belt (1) suitably supported by the belt (1), the piece (P) is cut directly on the belt (1) itself. An automatic cutting machine characterized in that it has a guillotine type cutting unit (9). (2) The cutting unit (9) is connected to the fixed structure (5) of the machine.
) The blade (209) is fastened to a supporting hawk (109) connected to a reciprocating drive (10) fitted in a
), said hawk (109) being hinged in such a way that the vanes (209) can perform a translational movement substantially parallel to the direction of forward movement of the string. Automatic cutting machine according to paragraph 1. (3) The device (10) for operating the cutting unit (9) is a pulse generator unit (17) adapted to sense the degree of forward movement of the string-like object directly from the string-like object (B) itself.
) The automatic cutting machine according to claim 1 or 2, wherein the automatic cutting machine is controlled by: (4) The device for operating the cutting unit (9) has a double-acting air cylinder (10) having a vane holding fork (109) having a fulcrum on the piston rod;
0) is when the vane (209) is moved from a position completely away from the active tension (101) of the conveyor belt;
4. An automatic cutting machine according to any one of claims 1 to 3, wherein the automatic cutting machine is intended to be moved alternately to a position where the tension (101) is applied to the tension (101). (5) The air cylinder (10) is a fixed structure of the machine (
5) are fitted in an adjustable manner so that the cutting blades (
5. Automatic cutting machine according to claim 4, in which the maximum distance of 209) can be varied in relation to the thickness of the string (B) to be cut. (6) Active tensioning of conveyor belt (1) (101)
The table (6) on which the slides (6) are inclined downwardly by a small angle starting from the cutting area in the forward direction, in connection with the forward movement of the string (B), from the first to the fifth term. Automatic cutting machine according to any of the above. (7) Automatic cutting machine according to claim 4, in which the air cylinder (10) operates in cooperation with a fixed limit stop (13). (8) Any of clauses 1 to 7, wherein the vane retaining hawk (109) includes means (119, 129) adapted to automatically return the hawk to the starting position at the end of each cutting cycle. Automatic cutting machine as described in. (9) The air cylinder (10) is supplied with pressurized air via the solenoid valve (14) from the high pressure chamber (15) according to any one of claims 4 to 8. Automatic cutting machine as described. (10) The pulse generator unit (17) controlling the cutting unit operating device (10) is arranged to be supported in a freely swinging manner on the string (B) and in turn to the adder (24). An actual suitable pulse generator connected (
23), so that said adder transmits a control signal to said unit operating device (10) in relation to the degree of forward movement of the string (B); An automatic cutting machine according to any one of claims 1 to 9. (11) A freely swinging pulse generator unit (17) and a cooperating idle roller (19) that guides the string-like object (B).
, 20) is held by an arm (18) fixed in an adjustable manner to a fixed structure (5) of the machine. .