JP2840862B2 - Molded product separator in synthetic resin molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention can continuously and efficiently separate and separate a molded article and a runner in plastic molding,
In particular, the present invention relates to a separator for molded articles in plastic molding in which a decrease in efficiency is small even for various kinds.

[Prior art] There is a conventional separator for molded articles in plastic molding in which a basket is provided in an outer box so that the basket rotates, and a molded article of a resin runner is put into the basket. And rotate. Due to this rotation, the molded product rolls in the basket, the molded product and the runner, etc. are torn off and the molded product falls from the eyes of the basket into the outer box. , Spools, etc. were discharged with a plow-shaped removal tool.

[Problems to be Solved by the Invention] However, the above-described separator is stopped each time the molded product taken out of the mold is put in or when the separated spool, runner, or the like is discharged, and the outer box and the lid of the basket are closed. In addition, input and output must be performed manually, and continuous operation cannot be performed. In addition, the whole basket had to be replaced when the size of the basket had to be changed when the molded article was different. Therefore, especially when a small number of products are used, the efficiency is considerably reduced, which leads to an increase in cost.

Furthermore, depending on the shape of the spool or the runner, it may fall through the eyes of the basket and be mixed into the molded product, and there is a problem that it must be selected.

The present invention eliminates the above-mentioned problems, automatically performs gate cutting continuously, and sorts a runner or the like from a product according to a dimensional difference based on a hole diameter and a depth width of a refraction passage to obtain only a molded product. The purpose is to provide a separator for plastic molded products that can be output.

Means for Solving the Problems In order to achieve the above object, the present invention provides a molded article separator for plastic molding in which one side surface of a rotary drum 2 provided with a substantially horizontal axis is openable and closable. A plate that covers the drum 2 side surface of the lid 3 and is provided with a plurality of scraping pieces 6 that are inclined at a fixed angle with respect to the axis and are arranged side by side on the inner peripheral surface of the drum 2. The portion 3a is provided with a hole 7 at a side position of an end portion of the scraping piece 6 which is lower when the scraping-up inclined surface 6a is scraped, and the cover 3 is formed from the hole 7 along the plate portion 3a. A passage 11 is provided which is open toward the center and is further bent to the peripheral side. The passage 11 has a size that allows a plastic molded product to pass therethrough and that a runner or the like separated from the plastic molded product cannot pass. Are provided.

[Operation] In the separator having the above configuration, the plastic molded product having the runner or the like put into the drum 2 is lifted up by the scraper 6 and dropped from above to separate the molded product from the runner or the like. Be a body. In the molded article and the runner, since the longitudinal dimension of the molded article is shorter than the longitudinal dimension of the runner, only the runner cannot pass through the bent portion of the portion coming out of the hole 7 to the passage 11, so that Drum 2
And only the molded product comes out of the hole 7 to the passage 11 and the drum 2
Is discharged to the outside through the bent path 11 as the rotation of the. A runner or the like that cannot pass near the hole 7 falls into the drum 2 again as the dora 2 rotates. That is, the molded article is automatically separated from the runner and the like, and the molded article is taken out during operation of the machine base.

In addition, when using a plastic molded product having a different size, it is only necessary to replace the lid 3 having the passage 11.

Example An example of a molded product separator in plastic molding according to the present invention will be described in detail below.

Reference numeral 1 denotes a base, and a drum 2 is supported by a frame 1a on the base 1 with its axis horizontal and rotated by a motor or the like. The lid 3 moves horizontally and opens and closes.

An opening 2a is provided at the center of the other side surface of the drum 2, and a hopper 5 for mounting a plastic molded product in a state of being released from a mold toward the opening 2a is attached to the frame 1.

On the inner peripheral surface of the drum 2, a plurality of scraping pieces 6 inclined at a fixed angle with respect to the axis are provided at equal intervals, and by rotating the drum 2 in the direction of the arrow in FIG. A plastic molded product that has been taken out of the mold put into the drum 2 can be scraped up. A plate 3a having substantially the same diameter as the drum 2 that covers the side surface of the drum 2 is provided on the cover 3, and a drum 2 that overlaps the plate 3a at a predetermined interval.
A plate portion 3b having a larger diameter is provided.
A hole 7 is formed in a lateral position of an end portion below the inclined surface 6a on the side where the drum 2 is picked up when the drum 2 rotates, so that a plastic molded product can pass therethrough.

A partition 8 is provided between the plate portions 3a and 3b for each hole 7 by a partition plate 8. Further, a partition plate 9 provided in each partition faces the hole 7 toward the center of the lid 2 from the hole 7 in the rotation direction. There is provided a passage 11 which opens to the peripheral side after reaching the peripheral side after the refraction.
The lid 3 has a pocket 10 formed by partitioning plates 8 between the plate 3a and the plate 3b.

The passage 11 has such a size that a bent portion from the hole 7 toward the center of the lid 2 is sized so that the plastic molded product A can pass therethrough and the runner L cannot pass through.

Reference numeral 12 denotes a roll which is attached to a portion of the partition plate 9 which forms the outer peripheral surface of the lid 3, and is rotatably supported at an angle of 45 ° with the axis of the drum 2 from the lid 3 toward the peripheral side of the drum 2. When the lid 3 is closed, the drum 3 rotates while the lid 3 is pressed against the outer peripheral edge of the drum 2, so that the engaging edge formed to protrude over the entire outer peripheral edge of the drum 2 on the lid 3 side. The cover 3 is closed by engaging with the same number of recesses 13 a as the 13 rolls 12.

When the drum 2 is rotated while pressing the lid 3 against the drum 2 in the above configuration, the roll 12 engages with the concave portion 13a provided on the engaging edge 13 of the drum 2 and the lid 3 The cover 3 is closed, and the hole 7 provided in the plate portion 3a of the lid 3 is fixed in a state where the hole 7 is aligned with the lateral position of the scraping slope 6a of the scraping piece 6 of the drum 2.

Then, when the plastic molded product that has come out of the mold of the hopper 5 is thrown into the drum 2, it is scraped up by the scraping piece 6 and dropped, and the gate is cut by the impact. 6 is guided to the hole 7 along the inclined surface 6a, and the molded product A comes out of the hole 7 into the passage 11 and temporarily accumulates in the pocket portion 10 along with the rotation of the drum 2 toward the center of the lid 2 along the partition plate 9. After moving, it moves in the circumferential direction, further moves along the other side of the partition plate 9 in the circumferential direction of the lid 3, and falls from the opening when it reaches a substantially constant position.

However, the runner L longer than the molded product A has a hole 7 and a passage.
Due to the refraction portion 11, the passage 11 cannot be entered from the hole 7, and the runner L left near the hole 7 falls into the drum 2 when the hole 7 moves upward due to the rotation of the drum 2,
The molded product A and the runner L are separated.

Accordingly, when the molded product A is placed below the drum 2 in the molded product receiving box 14, the automatically separated molded product A is inserted.

Also, since the inside state can be seen from the opening 2a of the drum 2 connected to the hopper 5, seeing this state, the tray 15 is placed below the drum 2, the lid 3 is opened, and the drum 2 is rotated.
The runner L, spool, etc. in the drum 2 are discharged.

Therefore, operations other than the discharge of the runner L and the spool can be continuously performed.

Further, when using the plastic molded product A having different dimensions, it is only necessary to change the lid 3 having the passage 11.

[Effects] Since the molded product separator in plastic molding according to the present invention is configured as described above, if the plastic molded product is put into the drum in a state of being removed from the mold, it is rotated together with the rotation of the drum. It is lifted by the scraper and dropped, and the gate is cut by the impact,
Only the molded article falls through the hole in the lid plate through the passage, and the runner passage is left in the drum and is automatically sorted.

In addition, since the charging operation can be performed while rotating the drum to continue the operation, the mechanical efficiency is improved, the operation efficiency is improved, and the cost is reduced.

Also, when used for plastic molded products of different dimensions, it is only necessary to change the size of the bent portion of the passage to a lid of the size used for the molded product, so it is suitable as a separator for various types of plastic molded products. It is.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a molded product separator in plastic molding according to the present invention.
The figure is the same perspective view with the lid open, FIG. 3 is a perspective view from the back side showing the relationship between the scraper and the hole of the lid, and FIG. 4 is a perspective view showing the engaging portion between the drum and the lid. FIG. 5 is a cross-sectional view of a passage from the drum to the lid, and FIG. 1 ... Base, 2 ... Drum, 3 ... Lid, 4 ... Air cylinder, 5 ... Hopper, 6 ... Scraping piece, 7 ... Hole,
8, 9 ... partition plate, 11 ... passage, A ... molded product, L ...
runner.

Claims (1)

(57) [Claims] 1. A rotating drum provided with its axis substantially horizontal, one side surface of which is constituted by a lid which can be opened and closed, and a plurality of scraping pieces on the inner peripheral surface of the drum are fixed to the axis. A plate is provided in parallel with an inclination at an angle, and a hole is formed in a plate portion covering the drum side surface of the lid at a side position of an end portion which is lower when the scraping upper inclined surface of the scraping piece is scraped. A passage which is bent from the hole toward the center of the lid along the plate portion so as to be bent and opened to the peripheral side, wherein the passage allows a plastic molded product to pass therethrough and the plastic molded product A molded product separator for plastic molding, characterized in that the molded product has a bent portion having a size that a runner or the like separated from a plastic cannot pass.