JPS6215096A - Cutter for plastic vessel - 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 applications The present invention relates to a plastic container cutting device.

Conventional technology Conventionally, tools such as rotary cutters, laser beams, etc. have been used to cut the conical container head, which is necessary when forming the mouth and extension part of a plastic container, but is unnecessary when the container is used. There is.

However, when the conventional method described above is used to cut off the head of a container, the following problems occur when the container is for beverages or food.

That is, when using a rotary cutter, cutting powder or thread-like cutting occurs, and when using a laser beam.

During fusing, steam from the base material, assist gas, etc. enter the container and are very difficult to remove due to the effects of static electricity, and the cut surface is not beautiful.

Therefore, an object of the present invention is to provide a plastic container cutting device that can solve the above problems.

Means for Solving the Problem In order to solve the above-mentioned problem, the plastic container cutting device of the present invention has a first part and a lower support plate fixed to the upper and lower parts of the rotary drive shaft, respectively, and a first part to the lower support plate. A shaft body is provided to be able to move up and down, a first cam roller is provided at the lower end of the first shaft body, and eight receiving plates are attached to the end of the first shaft body. A first cam body is provided that guides the first cam roller to raise and lower the receiving plate, and a second shaft body is provided upright on the side of the receiving plate, and the second shaft body is swingable in a horizontal plane. A pair of clamp arms that can hold and release a container are installed, and a second cam roller is attached to the end of the clamp arm to swing the pair of clamp arms when the receiving plate is raised and lowered. A cam body is provided on the side of the lower support plate, and the upper support plate holds a d-th shaft body having a pressing member at its lower end that presses the head of the container in the direction F, and the @
Around the lower end of the 88 container, several chuck bodies capable of holding the head of the container from around it are supported swingably in a vertical plane, and the first cylindrical body can be raised and lowered on the b-axis and d-shaft body. The outer periphery of the chuck body is fitted onto the lower end of the first cylindrical body at the pressing portion I.
jB pressing part is formed at the upper end of the first cylindrical body, and the first
Raise and lower the cylinder body and move the chuck body 1j towards the 8-side side.
A cylinder device is connected, the MZa body is rotatably fitted onto the first cylinder, and a first gear is attached to the lower end of the second cylinder. The arm is swingably supported in a vertical plane via its intermediate portion, a knife for cutting the head of the container is attached to the lower end of the swinging arm, a third cam roller is attached to the upper end, and A cylindrical cam body is fitted onto the two cylindrical bodies so as to be movable up and down, and
A second cylinder device for raising and lowering the cylindrical cam body is provided on the support plate side, and when the cylindrical cam body is raised and lowered, a third cam roller of the swinging arm is guided to move the knife at the lower end to the outer peripheral surface of the cylindrical cam body. A second gear is swingably provided on the upper support plate to form a cam surface that moves forward and backward toward the container, and meshes with the first gear attached to the second cylindrical body. The md cam body is provided for swinging the second gear via the third cam roller along the movement trajectory of the second gear.

Working rotation - In the Q state when the IO axis is rotating at a predetermined speed,
When the receiving plate comes to the designated 8-proof supply section, the container with the head is placed in the 8-proof supply section. Powered up. At this time, the receiving plate is in a pointed position due to the first cam body number.

Then, as the receiving plate rotates in a predetermined direction, the receiving plate is raised by the l-th cam body. As the receiving plate rises, the clamp arm is closed by the second cam body to hold the container. In this state, when the receiving plate is further raised, the upper end of the container head comes into contact with the pressing member at the lower end of the d-th shaft body, and the container is held under pressure between the receiving plate and the pressing member, and then the ml Body 1a is lowered by the cylinder device and the chuck body is moved to [6], and the container is securely held fixed. When the container is held fixed, the cylindrical cam body is lowered by the second cylinder device, and the swing arm swings outward $ζ.

A knife is inserted into the container where the head is cut. When the knife is inserted, the second cylindrical body, that is, the knife, is rotated by a predetermined angle by the third cam body to cut off the container head. When the head is completely cut off, the receiving plate is lowered by the first cam body and the clamp arm is released by the second cam body.
The container is then discharged from the discharge section. On the other hand, in the cutting section, the knife is moved outward tL, the chuck body is released, and the head is ejected at a predetermined position.

Practical Example A practical example of the present invention will be described below with reference to FIGS. 1 to 5. In addition, this cutting device is roughly divided into 8 plastic containers and below, which are simply referred to as containers. ) (L) holding part FA)
and a cutting part (B), which are arranged at the top and bottom of the rotation number ζ of one cap body, but due to size reasons, the lower holding part (B) is not shown in Figs. A) is shown, and FIGS. 4 and 5 show the edge cutting @ (B).

First, based on Figures 1 to 3! The holding section will be explained below.

(2) is a vertical rotation that is rotatably supported via a predetermined support tube (4) and is rotated by a GMM wheel (5) attached to its lower end. . (6) is a lower support plate fixed at a lower position of the rotating/moving unit 2), and is for supporting the main equipment of the holding part (A). Although a pair of holding parts (A) are provided in a 180° symmetrical device with the rotation drive shaft (2) as the center, only one will be explained in this example. (7) is the 1111+ body supported vertically by the lower support 41i (6) in the vertical direction, and the receiving plate (8) of the container (lJ) is fixed to the upper end, and the lower end is A first ascending and first descending cam roller 4 (6) is attached via a horizontal pin (9). A first ascending cam body and a first descending cam body provided on the sides guide the first ascending and first F descending cam rollers (G) and (B) to the first Q body (7), that is, the receiving & (8). Note that α fathom is a guide body provided under the lower surface of the lower support plate (6), and its guide groove (14
The head (9a) of the horizontal pin (9) for attaching the first cam roller α and (b) at the lower end of the 11d1 body (7) is inserted and guided into a).

Rotation of the receiving plate (8) is prevented. (to) is a clamp for the container (1) provided on the receiving plate (8), and is designed to hold or release the soil container -υ on the receiving plate (8) at the same time as the receiving plate (8) is raised and lowered 1ζ. It is strained. That is, the receiving plate (8)
The protrusion (8a) that protrudes in the vertical direction from the end of the
Vertical distance between left and right pair v21111 body f16A) (1
6B) is supported by Kmm, and a pair of left and right upper clamp arms (17A) (17B) are located at the upper ffl position of each of the second cap bodies (16A) (16B).
A pair of left and right lower clamp arms (18A) are located at the lower position.
(18B) are respectively pinned, and further a protrusion g (2O
A) (20B) D is the mutually inverted protrusion (20A) (2
A pair of tension springs (21A) (
21B) are hung in an X-shape. Therefore, by these tension springs (21A) (21B), the upper and lower clamp arms (1?A) (17B) (tsA) 11s
B) will always be biased in the direction of releasing container kl).

In addition, the protrusion on the side opposite to the holding recess (22A) (22B) of the lower clamp arm (18A) +tsn) <2
8k) (2BB) has the second cam roller (24A) (
24B) is installed, each of the left and right clamp arms (1?A) (17B) (18A
) [t8B)] is erected on the lower support plate (Q(
Refer to Figure d], therefore, when the receiver = (8) is in the lower position, the second cam rollers (24A) (24B) are close to each other, so that each clamp arm (17A)
+17B) (18A) (18B) holding part (19A
) (19B) (22A) (22B) are separated from each other and are in the released state of 6 mackerel U). Also, the receiving plate (8)
As the second cam roller (24A) (2
4B) are separated from each other by the second cam plate 4, and the respective holding parts (19A) (19B) (22A) (22
+26A)' (26B) is swung in the direction of holding the 8 device (1), and when it reaches the raised position, it is sure to hold the 63 Ll). A pair of left and right fixed guides for positioning the container (1) are provided in the middle of 8a), @ is the lower clamp arm (18A) +1
8B) (7) Holding recess (22A) +228) f'
3i1iirlcttIt is a friction member for preventing rotation of the attached container (υ).

Next, the cutting portion (B) will be explained based on FIGS. 4 and 5. In addition, this cutting part (B) is arranged above the said holding|maintenance part [A], and is tied, and although a pair is provided in 180 degrees symmetrical ga also in this case, only -10,000 will be explained.

6υ is an end support plate provided at the upper end of the rotary drive shaft (2) described in 11A, and is for supporting the entire cutting part (B). ＠ is a bracket (to) and a support pin located above the first shaft body (7) of the holding part (A) and attached to the end part support plate.
The third shaft body is supported in the vertical direction via Φ, that is, the F end of the third shaft (2) has a hole (a2a)
Along with the shape
za) A compression spring) is arranged in the circle to urge the plunger (2) to always protrude in the F direction. (B)
is a chuck body that is swingably supported in a vertical plane via a ball body at several points around the lower end of the third shaft body (2), and a container head (1a) is attached to the lower end of the chuck body. An arcuate convex portion (87a) is provided to hold the periphery. In addition, the cap is a rubber ring placed between the chuck body (B) and the cap for holding the ball body (To) on the third shaft body (To) side, and the chuck body (B) is always held outward. The purpose of this is to apply force to the The moose is an operating tool that presses the chuck body (b) from the outside to hold the container head (1a), and it has a first cylindrical ring that is externally fitted on the third shaft body (to) so as to be movable up and down. ,
attached to the lower end of the first cylinder body) and the chuck body (
2) Inclined surface (48a) for pressing the outer peripheral surface inward
a cylindrical holding member having a cylindrical holding member, which is supported by a bracket provided on the upper support plate (b) and connected to the upper end of the first cylindrical body; Third axis body (
It consists of a first cylinder device that raises and lowers the cylinder (to). Therefore, if the first cylinder body (B) is lowered by the first cylinder device, the chuck body (B) will be lowered.
is pushed inward by the inclined surface (41a) and the container head (1
By holding the upper end of a) and raising the first cylinder, the pressure on the chuck body (b) is released and the chuck body (b) is pushed outward by the urging force of the rubber ring (2). The container head (1a) is released.

Note that 2) is a cylindrical guide member screwed onto the outer periphery of the lower part of the cylindrical holding member, and is for guiding the container head (1a). (2) is a cutting tool for cutting the head (1a) of the container (1) held by the chuck body (2), and is connected to the upper support plate OXl via a bearing and also to the third shaft (2). ) a second cylindrical body rotatably supported around the outer circumference;
At four positions around the lower end of the second cylindrical body, the intermediate part is supported via a horizontal shaft, and a knife (■) for cutting the container head (1a) is attached to the lower end, and the upper end One end of the swing arm is connected to the third cam roller of the swing lever, and the other end is connected to the second cylindrical body side, that is, its mounting member V1.
A tension spring is connected to the cylindrical body and urges the swinging arm so that the knife is always positioned outward; A cylindrical cam body having an inclined cam surface (59a) for abutting and guiding the third cam roller and having an annular cam groove (59b) formed on the upper outer periphery, and one end thereof facing the rotational drive shaft (2). A swinging lever opening is supported via a horizontal pin, and a fourth cam roller is attached to the other end of the cam roller, which is freely removable within the cam groove (59b) of the cylindrical cam body. ), which moves the middle part of the swing lever up and down to raise and lower the cylindrical cam body; 1 gear) 1
4, an upper support plate C (supported swingably in a horizontal plane via a fourth shaft on n), and the ring gear
A fan-shaped gear (second gear) is meshed with the fan-shaped gear (second gear), and one end of the fan-shaped gear is engaged with a spring receiver (2) on the upper surface of the sector gear, and the other end is engaged with a spring receiver (2) on the upper surface of the upper support plate 01. a tension spring (2) that pulls the sector gear (2) in a predetermined direction, and a driving arm whose one end is interlocked with the sector gear via a fourth shaft body and whose other end is attached to a fifth cam roller. (to), and a third cam body 4 that is arranged along the movement locus of the third shaft body) and guides the fifth cam roller to swing the fan-shaped gear. Therefore, when the swing lever 4 is swung downward by the first cylinder device, the cylindrical cam body is lowered via the fourth cam roller, and the swing arm is moved via the third cam roller. It swings outward, and the knife (2) attached to its lower end moves toward the container (1). Furthermore, when the driving arm is swung by the third cam body 4, the second cylindrical body is rotated via the fan-shaped gear and the ring gear, that is, the knife moves around the container (1) in a predetermined position. rotated by an angle. At this time, the cylindrical cam body also rotates, but the engagement with the swing lever is between the cam groove (59b) and this cam groove (59b).
9b) and the fourth cam roller rolling inside, so there is no problem. Although not shown, there are first and second cylinder devices 14 on the upper support plate (b).
A plurality of limit switches are provided for controlling 11, and these limit switches are connected to a striker (not shown) arranged along the movement locus of the third shaft (to).
activated by.

Next, the effect will be explained.

First, while the rotary drive shaft (2) is rotating at a predetermined speed, when the receiving plate (8) comes to a predetermined container supply section, the head (1a) is A container (1) with a container (1) is placed on the receiving plate (8). At this time, the receiving plate (8) is in a lowered position by the first cam body @ (to). Then, as the receiving plate (8) rotates in a predetermined direction, the receiving plate (8) is raised by the first cam body (LIQl. As the receiving plate (8) rises, the second cam body) clamps the receiving plate (8). Arm (17A)
(17B) (18A) (18B) is closed and holds container (1). In this state, when the receiving plate (8) is further raised, the upper end of the container head (1a) comes into contact with the plunger (to) at the lower end of the third shaft (2), and the container (1) is moved up from the receiving plate. (
After being pressed and held between 8) and the plunger (to),
The first cylindrical body is lowered by the first cylinder device, and the chuck body (b) is swung, so that the container (1) is securely held fixed. When the container (1) is fixedly held, the cylindrical cam body is lowered by the second cylinder device and swings outward from the swinging arm 6, and the knife (to) moves toward the container (1).
The head (1a) is inserted into the cut point. When the knife (2) is inserted, the second cylindrical body, that is, the knife (2) is rotated by a predetermined angle by the third cam body 4 to cut the container head (1a). Note that the rotation angle of the knife (1) at this time is determined by the number of knives (to); for example, if there are four knives, the knife (2) is rotated by at least 90 degrees.

When the head (1a) is completely cut off, the first cam body (2)
The receiving plate (8) is lowered by (to) and the clamp arm (1?A) (17B) (
18A) (18B) is released and the container (1) is evacuated by means of an ejection device (for example a starwheel) placed in position. On the other hand, in the cutting section (B), the knife is moved outward and the chuck body (2)
After the is released, the head (1a) is ejected, for example, onto a chute (not shown) by a plunger at a predetermined position.

Note that each of the above operations is performed while the container (1) rotates once around the rotational drive shaft (2).

Effects of the Invention According to the above configuration of the present invention, a rotary cutter and a laser beam are used as in the prior art in order to insert a knife into the cut point of the container head and rotate the knife to cut off the unnecessary head. It has the effect of producing less chips and gas (and also has a more beautiful cut surface).

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway side view of the holding part, FIG. 2 is a partially cutaway plan view of FIG. 1, and FIG.
3 is a perspective view of the second cam body, FIG. 4 is a partially cutaway side view of the cut portion, and FIG. 5 is a partially cutaway plan view of FIG. 4. (1)... Container, (la)... Head, (2)...
... Rotation drive shaft, (6) ... Lower support plate, (7) ...
・First shaft body, (8)...receiving plate, αl)Qυ...first
Force ^ roller, (2) (2)...first cam body, (g)...
... Clamp tool (16A) (16B) ... Second shaft body, (17A) (17B) ... Upper clamp arm, (1sA) (tsB) ... Lower clamp arm, (21A) (21B) ...Tension spring,
(24A) (24B)...Second cam roller, g
O...Second cam plate, 0'O...Upper support plate, E...
・Third shaft body, (to)... blanker (pressing member). (To)...Compression spring, @...Chuck body, (10.
...Rubber ring. θ... Operating tool, (B)... First cylindrical body, Sakaki... Cylindrical pressing member (pressing part) 6@4... First cylinder device, 611... Cutting tool, ...Second cylindrical body, ■...Knife, (A)...Third cam roller, I...Swinging arm, @...Tension spring, @...Cylindrical cam body, (5
9a)... Inclined cam surface, (59b)... Cam groove, ml... Fourth cam roller, 4... Rocking lever, -
...Second cylinder installation JN...Ring gear (first
gear), II... sector gear (second gear), gear... fifth cam roller, fourth... third cam body

Claims (1)

[Claims] 1. Upper and lower support plates are respectively fixed to the upper and lower parts of the rotational drive shaft, and a first shaft body is provided on the lower support plate so as to be able to rise and fall freely, and a first cam roller is provided at the lower end of the first shaft body, and the upper end A receiving plate for the container is attached to a side part of the receiving plate, a first cam body is provided which guides a first cam roller to raise and lower the receiving plate along the locus of movement of the first shaft body, and a second shaft is attached to a side part of the receiving plate. At the same time, a pair of clamp arms that can freely swing in a horizontal plane to hold and release a container are attached to the second shaft body, and a second cam roller attached to the end of the clamp arm is attached to the second shaft body. A second cam body is provided on the lower support plate side for swinging the pair of clamp arms when the receiving plate is raised and lowered, and a third shaft is provided on the upper support plate, and the third shaft has a pressing member at its lower end that presses the head of the container downward. A plurality of chuck bodies are supported around the lower end of the third shaft so as to be able to swing freely in a vertical plane. A cylindrical body is fitted onto the outside so as to be movable up and down, and a pressing part capable of pressing the outer periphery of the chuck body is formed at the lower end of the first cylindrical body, and the first cylindrical body is fitted onto the upper end of the first cylindrical body so that the first cylindrical body can be raised and lowered. A first cylinder device for urging the chuck body toward the container is connected, and a second body is rotatably fitted onto the first cylinder, and a first gear is attached to the upper end of the second cylinder. , a swinging arm is supported around the lower end of the second cylindrical body via its intermediate part so as to be swingable in a vertical plane, and a knife for cutting the head of the container is attached to the lower end of the swinging arm. At the same time, a third cam roller is attached to the upper end portion, a cylindrical cam body is fitted onto the second cylindrical body so as to be movable up and down, and a second cylinder device is provided on the upper support plate side for raising and lowering the cylindrical cam body, A cam surface is formed on the outer circumferential surface of the cylindrical cam body to guide the third cam roller of the swinging arm and move the knife at the lower end toward and away from the container when the cylindrical cam body is raised and lowered. , second
A second gear that meshes with the first gear attached to the cylinder is swingably provided, and the second gear is swingable via a fifth cam roller along the movement locus of the third shaft body. A plastic container cutting device characterized by having three cam bodies.