JPH04176501A - Mouth finishing machine - Google Patents

Abstract

PURPOSE:To precisely finish a mouth of a container by connecting three rolls to a rectilinear block including a bearing box of a rectilinear roll and an arm of an oscillating roll with a link and bringing it close to a shaft center with advance of the rectilinear block so as to clamp the container. CONSTITUTION:A shaft 8 is a rotation center of an oscillating arm 6 as well as that of an arm 9 of a scrap guide. A link 10 is connected to the arm 9 with a pin 11 at one end. A knife 15 is placed on a tool rest 16, and an angle, height and position in the fore and aft direction of its edge can be adjusted. A cylinder 17, an actuator for moving the tool rest 16, moves forward after a block 2 is moved forward and a container is clamped by a driving roll 18 and two oscillating rolls 19, and the container is fully rotated so as to finish cutting. A scrap is guided by a guide fitting 12 and sent by an air gun and so on to a chute 20.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is an apparatus for finishing or rough cutting the mouth of a container manufactured by a blow molding machine.

(Prior Art) Conventional finishing machines employ a method of clamping a two-part mold that matches the outer shape of the mouth part from two directions. Either the blade was rotated or the clamp was rotated.

In order to rotate the clamp together with the container, a means had to be provided to transmit force to the clamp.

In addition, in the case of a 9-turn blade, it was necessary to have a means to bring the blade close to the mouth of the container, and also to clamp the container.

In a rough cut machine, the guide and the blade were placed together, and the guide rotated and the container rolled while pressing the container against the blade and cutting it.

The guide of the rough cut machine was on the scrap side of the container, and the cut surface was defective, especially at the point just before the cut, and a separate finishing machine was required.

Conventional mouth finishing machines are large in size, have container moving means and clamps that are unique to each container, and cannot accommodate changes in size, making them specialized machines.

(Problems to be solved by the invention) To expand the range of applicable containers, reduce the cost of replacement parts so that it can be used as a general-purpose machine, simplify handling, speed up processing, and downsize.

Reduce the required power.

Facilitates disposal of scraps and chips.

To make finishing possible at the same time without requiring a rough cut machine.

(Means for Solving the Problems) In order to achieve the above object, in the mouth finisher of the present invention, three rolls move in a direction approximately 120° from the axis of the container, and One roll moves straight and the other roll swings, and the bearing of the straight roll is linked to the straight block containing the box and the arm of the swing roll, and as the straight block moves forward, the three rolls move toward the container. Clamp the container close to the axis of the container.

A motor with a speed reducer is attached to the back of the block and drives the linear roll via a toothed belt.

The straight roll is a driving roll that rotates the container.

As the container begins to rotate, the knife moves forward and cuts out a piece of scrap or shavings.

At this time, the scrap is cut and pushed along the guide groove by an air jet, and after one rotation of the container, the block is retracted, and the three rolls, the scrap guide, and the knife are retracted simultaneously.

At this time, if there are no scraps and the chips are used for finishing one piece, the chips are small and must be disposed of by suctioning air.

Install the air intake on the scrap guide or professional side.

The guide for taking out scraps is similar to the swing roll, with an arm connected to the block with a link, and guides the scrap part during clamping.

All you have to do is regulate the direction of movement of the scrap after cutting and blow it out with air.

The arms of the swing roll and scrap guide are rotatably connected to a fixed shaft.

One of the swinging rolls and the fixed shaft of the scrap guide can be coaxial.

The rocking roll can rotate but is not driven.

Mass production machines must appropriately design the container cutting and container flow.

In this case, it varies depending on the diameter and height of the container.

Each case must be designed according to its size.

The same thing can be achieved by using a cam instead of a link. .

The same movement can be achieved by placing a cam on the block and placing a part of the swinging roll and scrap arm to follow the cam.

(Function) In the finishing machine configured as described above, as the linear block moves forward, the angles of the link, the swing arm, and the arm of the scrap guide approach a right angle, and the swing roll is pushed by the container and opens. Hateful.

Since the forward direction of the block and the angle of the link are nearly perpendicular, the forward force of the block is not significantly reduced by the reaction force of the rocking rolls holding the container.

By positioning the forward end of the block, it is easy to change the size of the nine openings, and you can select an appropriate tightening margin without overtightening.

The rolls of the straight block can be more precise and rigid than the rolls of the swinging arm, and since the knife is on the path of the straight roll, the mouth of the container can be finished precisely.

Oscillating rolls, driving rolls, scrap guides.

The knife and mouthpiece move at the same time, there is no timing lag, accurate positioning, no loss in each movement, and by detecting the rotation angle of the roll, the rotation angle of the container can almost be estimated, minimizing cutting time. Can be set to .

If you change the container, the guide at the 2-mouth part will change, so you will also need to change the mouth.

If the guide diameter changes, the forward end of the block must also be changed.

When changing the container, one thing that must be changed is:
If it is within the applicable size range, only the Habo roll is sufficient.

A scrap guide is no longer needed when finishing the mouth of a roughly cut container, but it does not get in the way even if it remains attached.

If it gets in the way, just remove the guide fittings.Whether you use a cam or a link, it is a restraining means that restricts the movement of the arm. In order not to greatly weaken the force, the direction of the force received from the link and cam is set so that as the block moves forward, it approaches perpendicular to the direction of movement.

(Example) An example will be described with reference to the drawings. In FIG. 1, the left side of the center line 1 is a view before the linear block 2 moves forward, and the cylinder 3 is the actuator of the block 2.

The link 4 is connected to the swinging arm 6 by a pin 5, and the link 4
One end of the block 2 is connected to a bin 7 attached to the block 2.

The axis 8 is the center of rotation of the swing arm 6 and is also the center of rotation of the arm 9 of the scrap guide.

The link 10 is connected to the arm 9 by a pin 11 at one end.

The other end of the link 10 is connected to the block 2 with a pin in the same way as the swing arm 6.

A guide fitting 12 is attached to the end of the arm 9.

The guide fitting 12 can be adjusted to match the guide width of the scrap through the elongated hole 13, and can be adjusted to the position of the container 14.

The knife 15 is mounted on a tool rest 16, and the angle and height of the cutting edge can be adjusted.

The cylinder 17 is an actuator that moves the turret 16.
The block 2 moves forward, clamps the container with the driving roll 18 and two swinging rolls 19, moves forward, the container rotates once, and the cutting is completed.

When the block 2 retreats and the tool rest 16 retreats.

Rolls 18,19 open and the containers fall.

The rolls 18, 19 can be replaced depending on the shape and size of the container.

Scrap is guided by a guide fitting 12 and sent to the chute 20 using an air gun or the like.

The pillar 21 is a support 23 for the container guide 22. It is used to attach the positioning unit at the cutting position.

On the right side of center line 1 in Fig. 1, block 2 is in the advanced state;
The tool rest 16 has also moved forward, and the cutting edge 24 has reached the container cutting position.

Rolls 18, 19 rotate the container while clamping it. A swarf suction port 25 is attached to the block 2 at a position where it can easily suck up swarf.

It is being sucked into the blower.

The forward end positioning of the block 2 can be performed by adjusting the nut 26 and the stopper 28 of the cylinder.

The arm of the scrap guide may be attached to one location, and in the case of the figure, one arm is attached to the left shaft 8.

FIG. 2 shows an automatic finisher using the finisher of the present invention.

There are pillars 21 and bases 30 built into a frame 29.

The edge finisher of the present invention is mounted on the base 30.

The container guide 22 is divided into upper and lower halves at the cut portion.

It is fixed to the pillar 21 with a support 23.

The stoppers 31, 32 are cylinder-driven cut-outs of the container. The stopper 33 is for stopping the container cut out from above at a substantially position where it is clamped by the rolls 18 and 19, and when it is clamped, it returns immediately and falls immediately below after being cut.

The shutter 35 opens the container that has arrived on the conveyor 34, and the container is flown onto the conveyor 34 and placed on the conveyor. .

The cut scrap 36 is moved by the guide fitting 12 as shown in the figure.

The port 18 is the motor 37. Reducer 38. toothed belt 3
The speed reducer 38 is transmitted to the shaft 40 through 9 and rotates 9 times, and is attached to the block 2 with a cover 41 in between.

The tool rest 16 moves with a cylinder 17, and a knife 15 is mounted at the tip.
is installed.

FIG. 3 shows a case in which the restraining means for the swinging arm 6 and the arm 9 are cams, and the pin 42 of the swinging arm 6 is attached to the groove 43.
The bottle 44 of the arm 9 is guided in the groove 45.

The left side of the center line 1 in the figure shows the block 2 in the backward state, and the right side shows the forward state of the block 2.

A cam 46 that moves the swing arm 6 is screwed to the block 2, and a cam 47 that moves the arm 9 is stacked on top of the left cam 46 and screwed.

(Effects of the Invention) Since the present invention is configured as described above, it produces the effects described below.

Since the drive roll moves together with other rolls and the scrap guide, there is no time lag.

When the three rolls change the clamp diameter, the optimum position can be obtained by changing the block position.

It is easy to change and adjust the clamp diameter.

The position of the two swinging rolls is open when clamping.
The pressing force of the drive roll is not significantly reduced.

By detecting the rotation angle of the roll, it is possible to know in advance when the cut has finished, which also reduces wasted time.

The knife is inserted directly above the drive roll that moves in a straight line, which is easy to achieve precision, and the cut surface of the container is finished with good precision.

It can be used for containers of different sizes, and can be used by changing the flow part of the container, such as the container guide.

You can avoid wasted investment.

If the guide portion of the mouth of the container is different, the shape of the roll needs to be changed, but even if the guide portion is different, it is sufficient to simply change the roll.

Scraps and chips can be processed reliably at the same time, and the flow of the container after cutting is not obstructed.

The rotating parts are containers and rolls, within a relatively narrow range.

Machines have become more compact, and even if the processing capacity of one machine is insufficient, it is easy to increase the processing capacity by connecting two or three machines.

The moment of inertia of the rotating part is small, so the power can be reduced.

A single actuator can clamp the container, making it easy to achieve repeatable clamping position accuracy.

It can also be used to finish items that have been rough cut or have no scrap parts.

[Brief explanation of drawings]

FIG. 1 is a plan view of the edge finisher, FIG. 2 is a side sectional view of the edge finisher installed in an automatic machine, and FIG. 3 is a plan view of the edge finisher in which the restraining means is a cam. 2-Block, 4.5.10-Link. 6-arm, 9-arm, 12-guide metal fittings. 14- @ utensil, 15- knife, 16- turret. 18.19-roll, 36-scrap. 37-motor, 39-toothed belt. 46, 47-cam.

Claims (1)

[Claims] A finishing machine for plastic containers in which two swinging rolls, a scrap guide, and one roll that moves straight are interlocked by links or cams, and each turret mounted on a block with a roll shaft that moves straight moves by one actuator. .