JP2569378B2 - Cutting and sorting equipment in a synthetic resin continuous molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a continuous molding machine for cutting a continuously fed product into individual products, or a continuous cutting device for cutting unnecessary portions between products. It is an improvement.

[Background of the Invention] The inventor of the present invention invented a continuous molding machine called a rotary machine and received great popularity.

In this rotary machine, a plurality of a pair of dies are circumferentially arranged, a tubular (pipe-shaped) resin material is guided between the pair of dies, and the dies are closed. During the movement, air is injected into the tubular material in the mold with a needle or the like, and the resin material is expanded to obtain a product.

In this case, the space between the products or between the products and the unnecessary parts is made extremely thin, in other words, in a state where it is easy to cut.

Thus, the product is produced as a continuous string or an unnecessary portion between the product and the product as a continuous string. Therefore, an operation of cutting and separating the string is required.

[Prior Art and Disadvantages of the Present Invention] The conventional means for cutting and separating a product and an unnecessary part from the above-mentioned cord-like material is such that a pair of one-to-one rolls are arranged at a fixed interval and the entrance side of the cord-like material is provided. The product is pulled by increasing the rotation speed of the pair of rolls on the exit side with respect to the pair of rolls.

At this time, since the unnecessary portion between the products is extremely thin as described above, a device is prepared which is cut and separated from each other.

Next, the cut unnecessary parts and the product are transferred at regular intervals onto a pair of horizontally provided conveyors. In this case, the fixed interval between the pair of conveyors is an interval shorter than the length of the product and longer than the length of the unnecessary portion.

That is, the product is conveyed to the continuous conveyor through the interval between the two conveyors and is taken out, but unnecessary portions fall from the interval and are discarded.

However, the length of the product may be shorter than the above-mentioned interval, and the length of the unnecessary portion may be shorter than the interval. In this case, the product is dropped from the above-mentioned interval.

Thus, such a conventional apparatus requires a large-scale apparatus as a whole, which increases the manufacturing cost and the mounting space. In addition, the length of the product and the unnecessary portion varies depending on the product, and each time a large change operation such as adjustment of a roll or a conveyor interval has to be performed.

[Object of the present invention] The present invention is an apparatus which is compact in its entirety, but can reliably cut and sort a product and an unnecessary part, and can be easily adapted to the length of the product or the unnecessary part. In addition, the roll interval can be adjusted, and the products after cutting and sorting can be easily taken out.

Concretely, the tubular resin material (C) is introduced into the mold (B), the product (D) is molded in the mold (B), cooled and taken out, and the product (D) and unnecessary parts therebetween In the synthetic resin continuous molding machine (A) in which (E) is successively connected and fed in a string shape, the entire mechanism is reduced in size by performing cutting and sorting, which are conventionally provided separately, by the same mechanism. That is.

[Features and Functions and Effects of the Present Invention] That is, the features of the cutting and sorting apparatus in the synthetic resin continuous molding machine of the present invention are that the upper and lower frames (4) and (5) are located between the horizontal upper and lower frames (4) and (5). A plurality of upper and lower horizontal sub-frames (6) and (7), a plurality of vertical rods (8) fixed to each other, and an appropriate distance between the sub-frames (6) and (7). A pair of upper and lower foremost rolls (1) and (1) 'pivoted to the center, and an intermediate roll (2)
(2) ', the last roll (3) (3)', the intermediate roll (2) (2) ', and the last roll (3)
(3) ', a bearing (9) (10) provided on the sub-frames (6) and (7) for pivotal support, and sub-frames (6) and (7) located immediately below the bearings (9) and (10). Slotted holes (11) (12)
A vault (13) (with an upper end secured to the bearings (9) and (10) with the end screwed to the sub-frames (6) and (7) and the upper end thereof penetrating the slots (11) and (12). 14), the forefront roll (1) (1) ', and the intermediate roll (2)
(2) ', a mechanical means for transmitting a rotational force to the final rolls (3) and (3)'.

The distance between the frontmost rolls (1) (1) 'and the intermediate rolls (2) (2)' corresponds to the intermediate roll (2).
The length of the interval between (2) ′ and the end roll (3) (3) ′ is shorter than the length of the product (D) to be produced and longer than the length of the unnecessary portion (E). The rotation speed of the foremost rolls (1) (1) 'is lower than the rotation speeds of the intermediate rolls (2) (2)' and the final rolls (3) (3) 'and the intermediate roll (2). The rotation speed of (2) 'is configured to be lower than the rotation speed of the final rolls (3) and (3)'.

Therefore, the foremost rolls (1) (1) ', the intermediate rolls (2) (2)', and the final rolls (3) (3) 'are continuously formed in a string form by appropriate mechanical means. The fed product (D) and the unnecessary part (E) are rotated in a direction of biting between the respective rolls, and the product (D) and the unnecessary part (E) are turned to the frontmost rolls (1) and (1). Suppose that the product (D) has now entered between the intermediate rolls (2) and (2) '.

At this time, as described above, the intermediate rolls (2) and (2) '
Since the rotation speed is higher than that of the frontmost rolls (1) and (1) ', the product (D) is strongly pulled, and the product (D) and unnecessary parts (E) are cut. Next, the intermediate rolls (2) and (2) 'consume unnecessary portions (E),
The connection between the unnecessary part (E) and the following product (D) is cut.

Thereafter, the product (D) and the unnecessary part (E) are directed between the final rolls (3) and (3) ', and at this time, the roll (3)
The distance between (3) ′ and the intermediate roll (2) (2) ′ is
Since the length of the unnecessary portion (E) is set to be shorter than the length of the product (D) and longer than the length of the unnecessary portion (E), the product (D) is bitten between the final end rolls (3) and (3) ′, but the unnecessary portion ( E)
Falls from between the two rolls (2) (2) 'and (3) (3)'.

Therefore, cutting and sorting of the product (D) and the unnecessary part (E) can be easily performed. In addition, the last roll (3)
(3) 'has a higher rotation speed than the intermediate rolls (2) and (2)'.

This is because if the product (D) and the unnecessary portion (E) continue even after the cutting process of the intermediate rolls (2) and (2) ′, the same operation as described above is performed. In order to carry out the cutting and separation, and to quickly send the product (D) to the next step.

When one or both of the product (D) and the unnecessary part (E) are long or short, in other words, the intermediate roll (2) (2) ′ and the final roll (3)
If it is desired to change the interval of (3) ', the bearing (9) of the intermediate roll (2) (2)' and the final roll (3)
Loosen one or both vaults (13) and (14) of the bearing (10) of (3) ', and follow the bearings along the slots (11) and (12) provided in the sub-frames (6) and (7). (9)
By sliding (10), the intermediate roll (2)
The distance between (2) 'and the last roll (3) (3)' can be adjusted. When this interval is adjusted, the intermediate rolls (2) and (2) 'and the final roll (3) are also used.
(3) 'is, of course, to enable rotation to be transmitted by mechanical means.

[Configuration of Embodiment] FIG. 1A shows an example of a rotary type continuous molding machine. In this molding machine, a plurality of pairs of molds (B) are radially arranged on a circumference. (C) is a tubular synthetic resin material. The material is introduced into a pair of molds (B), the mold (B) is closed, and the material (C) in the mold (B) is closed by an appropriate known method. Inject air.

Thus, the resin material (C) is molded in the mold (B), cooled, and taken out of the mold (B). In this case, in the example shown in the figure, the product (D) and the unnecessary portion (E) between them are successively fed out in a string form.

In the figure, (1) (1) '(2) (2)' (3) (3) 'is a space between the product (D) which is continuously fed in a string form and the unnecessary part (E) in the flow direction. And a pair of upper and lower foremost rolls, intermediate rolls, and final end rolls.

The entire apparatus of the present invention is shown in FIG. 2 and FIG. In this figure, (4) and (5) are horizontal upper and lower frames, respectively, which are fixed to a fixed frame (not shown).

Two horizontal sub-frames (6) and (7) are fixed to the upper and lower frames (4) and (5) by a plurality of vertical rods (8) between the frames (4) and (5). . On each of the sub-frames (6) and (7), a pair of upper and lower bearings (8) '(9) and (10) are provided at regular intervals.

Thus, the shafts of the pair of frontmost rolls (1) (1) ', the intermediate rolls (2) (2)', and the last rolls (3) (3) 'are supported on the respective bearings. In providing the bearings (8) '(9) (10), the bearing (8)' supporting the foremost rolls (1) (1) 'is a sub-frame (6) (7). Fixed to.

On the other hand, bearings (9) (10) supporting the intermediate rolls (2) (2) 'and the final rolls (3) (3)' are subframes (6) (7) located immediately below the bearings. To the long hole (1
1) Pierce (12) and fix the lower ends of the vaults (13) and (14) with the upper ends fixed to bearings (9) and (10).
And fixed to the sub-frames (6) and (7) from below the long holes (11) and (12) with nuts (15) and (16).

(17) is a motor fixed to an appropriate position of a frame (not shown) for driving the forefront roll (1), and a shaft (19) of the forefront roll (1) via a speed reduction mechanism (18).
Mechanically connected to

(20) is a motor slidably provided at an appropriate position on the frames (4) and (5).
(2) 'and the end rolls (3) and (3)' are mechanically connected to the shaft of the intermediate roll (2).

(21) and (22) are support plates vertically arranged in the outer direction of each of the intermediate bearing (9) and the final end bearing (10). The upper and lower ends thereof are the upper and lower frames (4).
It is fixed by the vault (23) provided in (5).

The frames (4) and (5) provided with the vault (23) have a plurality of through-hole groups (24) and (25) in the horizontal direction. The above vault (2
3) The size can be screwed.

Each of the support plates (21) and (22) has a pair of gears (26) and (27) meshed with each other, and the gears (26) and (27) are provided with the intermediate rolls (2) and (27). 2) ',
It is in mesh with a gear provided on the shaft of the last roll (3) (3) '.

Also, sprockets (28) and (29) are provided on the axes of the upper intermediate roll (2) and the final end roll (3), respectively, and are located at appropriate positions as shown by a vertical line in FIG. There is a chain (31) via the provided tension gear (30), and the rotational force is transmitted to each. In this case, the sprocket (29) has fewer teeth than the sprocket (28), so that it rotates faster.

The figure (32) shows the product (D) unwound from the mold (13).
And a conveyer for transporting a string of unnecessary parts (E), one end of which is located at the feeding portion of the mold (B) and the other end is located near the frontmost roll (1) (1) '. Let me do it.

The distance between the frontmost rolls (1) and (1) 'and the intermediate rolls (2) and (2)' corresponds to the intermediate roll (2).
The length of the interval between (2) 'and the final rolls (3) and (3)' is shorter than the length of the product (D) and longer than the length of the unnecessary portion (E).

Further, the rotation speed of the frontmost roll (1) is lower than the rotation speeds of the intermediate rolls (2) and (2) ′ and the final rolls (3) and (3) ′, and the intermediate rolls (2) and (3). 2) 'rotation speed is the last roll (3)
The rotation speed is set to be lower than (3) '.

[Explanation of the operation and effect of the embodiment] Next, the operation and effect of the embodiment of the present invention will be described. Now, the driving force of the motor (17) is reduced via the reduction mechanism (18) to the shaft (19) of the foremost roll (1). ), The roll (1) is rotating at a lower speed than the other rolls (2) (2) ', (3) (3)'.

Although not shown, the rotational force of the motor (17) is mechanically connected to the shaft of the conveyor (32).
The conveyor (31) is being driven. In this case, the rotational speeds of the frontmost rolls (1) (1) 'and the conveyor (31) are constant.

In the drawing, the roll (1) 'below the forefront roll (1) (1)' is not driven by force and follows the flow of the product or unnecessary parts. Forcible driving may be performed at the same speed as (1).

Next, the rotational force of the motor (20) transmits the rotational force to the shaft of the roll (2) above the middle part, and the roll (2)
Is spinning. A sprocket (28) is provided on the shaft of this roll (2), and its rotational force is transmitted by a chain (31) via a tension gear (30) between the upper roll (3) of the last roll and the roll ( 3) is also rotating.

In this case, the fact that the rotation speed of the roll (3) is slightly higher than the rotation speed of the roll (2) is described in the aforementioned “Configuration”.
As described above. Further, the shafts of the roll (2) above the intermediate portion and the roll (3) above the final end have gears, respectively, which mesh with the gears (26) of the support plates (21) and (22). The gear (27) meshes with the lower roll (2) 'at the intermediate portion and the lower roll (3)' at the final end. As a result, each lower roll (2) '(3)' rotates at the same speed as each upper roll (2) (3).

The product (D) and the unnecessary part (E) which are now continuously unwound from the mold (B) in a string form are guided between the rolls (1) and (1) 'at the forefront of the conveyor (31). It is assumed that the product (D) has now entered between the intermediate rolls (2) and (2) '.

At this time, as shown in FIG. 4 (a), the intermediate roll (2)
(2) 'has a higher rotational speed (usually about 1.5 times) than the forefront roll (1) (1)', so that the product (D) is strongly pulled and the product (D) is unnecessary part. (E) is cut. Next, as shown in FIG. 4B, the intermediate rolls (2) and (2) 'bite into the unnecessary portion (E), and the connection between the unnecessary portion (E) and the subsequent product (D) is formed. Disconnect. Thereafter, the product (D) and the unnecessary portion (E) are directed between the final rolls (3) (3) '. At this time, the interval between the rolls (3) (3) 'and the intermediate rolls (2) (2)' is set shorter than the length of the product (D) and longer than the length of the unnecessary portion (E). Therefore, the product (D) is bitten between the final rolls (3) and (3) ', but the unnecessary portion (E) is both rolls (2) and (2)' and the roll (3).
(3) It falls from between '.

Therefore, cutting and sorting of the product (D) and the unnecessary part (E) can be easily performed. In addition, the last roll (3)
(3) 'has a higher rotation speed than the intermediate rolls (2) and (2)'. This is because if the product (D) and the unnecessary part (E) continue even after the cutting process of the intermediate rolls (2) and (2) 'described above,
This is for performing the cutting and separation by the same operation as described above, and for quickly sending the product (D) to the next step.

Now, if it is desired to change the product (D) and / or unnecessary part (E) to a longer or shorter one from the states shown in FIGS. 1 and 2, in other words, an intermediate roll ( 2) (2) 'and final roll (3)
(3) If you want to change the distance of ',
Remove one or both vaults (23) of (22), slide the support plates (21) and (22), and adjust the through holes (24) and (25) provided in the frames (4) and (5) as appropriate. And fix it again.

In other words, if the length of the product to be changed, in other words, the length of the product (D) or the unnecessary portion (E) does not change much, it is sufficient to slide one of the support plates (21) and (22). If both are to be changed significantly, both will slide.

In addition, the sprocket (28) of the roll (2) in the middle part,
The chain (31), which is the rotation transmitting means of the sprocket (29) of the last roll (3), has a tension gear (30)
Is provided, there is no possibility that the rotational force is not transmitted.

Next, one or both vaults (13) and (14) of the bearing (9) of the intermediate rolls (2) and (2) 'and the bearing (10) of the final rolls (3) and (3)' are loosened. The gears provided on the shafts of the bearings (9) and (10) are slid along the elongated holes (11) and (12) provided in the sub-frames (6) and (7). 22) Gears (26)
By engaging with (27), each roll (1)
The distance between the pair of rolls (1) ', (2) (2)', and (3) (3) 'can be adjusted.

The bearing (10) of the intermediate roll (2) (2) '
, The motor (20) must be slid by the same distance by appropriate means.

Further, in this embodiment, the rolls (2) and (2) ',
(3) An example of sliding the (3) 'has been described. However, any configuration may be used as long as the distance between the rolls (2) (2)' and (3) (3) 'can be adjusted. Good.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention, FIG. 1 is an overall front view including a rotary machine, FIG. 2 is an overall front view of the apparatus of the present invention, and FIG. 3 is a plan view of FIG. 4 (a) and 4 (b) are operation explanatory diagrams showing the relationship between products, unnecessary parts, and rolls in the embodiment of the present invention. (A): Rotary continuous molding machine (B): Mold (C): Synthetic resin material (D): Product (E): Unnecessary part (1) (1) '... Front roll (2) (2) '... Middle roll (3) (3)' ... Final roll (4) (5) ... Upper and lower frames (6) (7) ... Subframe (8) ... Vertical rod (8) '(9) (10) ... Bearing (11) (12) ... Long hole (13) (14) ... Vault

Claims (1)

(57) [Claims] 1. A product (D) in which a tubular resin material (C) is guided into a mold (B), molded in the mold (B), cooled, and taken out, and the product (D) and the product between the product (D) are removed. In a synthetic resin continuous molding machine (A) in which necessary parts (E) are sequentially connected and fed in a string form, horizontal upper and lower frames (4) and (5) are provided between the frames (4) and (5). The upper and lower horizontal sub-frames (6) and (7), the plurality of vertical rods (8) fixed to each other, and the sub-frame (6)
A pair of upper and lower foremost rolls pivoted on (7) (1)
(1) ', intermediate part roll (2) (2)', final end roll (3) (3) ', and the intermediate part roll (2) (2)' and final end roll (3) (3) 'To pivot the sub-frames (6) and (7)
Bearings (9) and (10) provided on the sub-frame (6) located immediately below the bearings (9) and (10).
Elongated holes (11) and (12) drilled in (7), the ends of which are screwed into the sub-frames (6) and (7), and the upper ends pass through the elongated holes (11) and (12) and the upper end bears the bearing (9)
The vaults (13) and (14) fixed to (10), the forefront roll (1) (1) ', and the intermediate roll (2)
(2) ', a mechanical means for transmitting a rotational force to the final rolls (3) and (3)', and the foremost rolls (1) and (1) 'and the intermediate roll (2).
Intermediate roll (2) (2) '
The length of the interval between the end rolls (3) and (3) 'is shorter than the length of the product (D) to be produced and the unnecessary portion (E)
And the rotation speed of the foremost roll (1) (1) ′ is intermediate roller (2).
(2) 'and the rotation speed of the final rolls (3) and (3)' and the rotation speed of the intermediate rolls (2) and (2) 'are lower than the rotation speed of the final rolls (3) and (3)'. A cutting and sorting device in a synthetic resin continuous molding machine, characterized in that it is configured to be slow.