KR20000025957A - Automatic extractor embedding pulverizer and pulverizing after separating sprue - Google Patents

Abstract

PURPOSE: An automatic extractor that is a plastic injecting molder is provided to pulverize by extracting a sprue. CONSTITUTION: A hopper is attached to one side of an extractor body. A bearing inserted into a rail assembles a plate(20) and installs a block(23) containing a descending cylinder2(21) and a guide bar(22). Then, a jig plate(24) for separating products is attached to the lower rod of the guide bar and the descending cylinder. A block(23) is rotated on a pin(31) as a rotating shaft when a rotating cylinder2(29) is operated and the descending cylinder, the guide bar and the jig plate are rotated together.

Description

Built-in grinder and automatic sprinkler to separate and sprue

The present invention relates to an ejector for automatically taking out an injection molding of a plastic injection molding machine, and more particularly, to a built-in crushing device and to take out and crush the sprue generated during injection molding, in the case of a direct injection molding It relates to a product separation pulverizer, in which the sprue is pulverized and the product is taken out.

In the case of injection molding a thermoplastic resin, in the case of a pin point gate or tunnel gate type mold, the product and sprue are separated from the mold, but the shape of the product and the physical properties of the resin In many cases, direct injection may be necessary due to various factors such as the size of the product;

Conventional blowers may take out sprues or direct injections out or attach additional attachments to separate products and sprues, but in any case, separate grinders It must be installed or collected and pulverized later, which puts a heavy burden on the workmanship, worsens the working environment, and puts foreign substances such as dust into the pulverized product, and the grinder takes up the installation space. There were many difficulties, such as requiring a separate manpower for grinding and grinding.

In the present invention, when the ejector takes out the sprues and runners, the product is not only immediately pulverized but also when the direct injection product is taken out, the product and the sprues are separated during the extraction process, and the product is taken out of the injection machine and the sprues are crushed. It does not require any processing, installs a separate grinder, or needs to grind it later.

1 is an overall perspective view of the present invention

Figure 2 is a partially enlarged perspective view of the arm 1 in the present invention

Figure 3 is a partially enlarged perspective view showing a state before the rotation of the arm 2 in the present invention

Figure 4 is a partially enlarged perspective view showing a state after the rotation of the arm 2 in the present invention

5 is an enlarged perspective view showing the structure of the grinding chamber according to the present invention;

Figure 6 is a cross-sectional perspective view showing the internal configuration of the main body according to the present invention

7 is a perspective view showing a sequence of separating the product and the sprue in accordance with the present invention

8 is a perspective view showing a state in which the product and sprue separation is completed in the present invention

Figure 9 is a perspective view showing a state immediately before taking out the product in the present invention and the sprue into the hopper

<Snow surface of main code in drawing>

1: body 6: side bars

7: ascending cylinder 12: descending cylinder 1

14: bunch of tongs 17: forward cylinder 1

19: driving cylinder 21: lowering cylinder 2

29: rotating cylinder 33: forward cylinder 2

34: rotation axis 35: auxiliary rotation

37: cooling ring 39: main rotational degree

40: mesh 42: discharge wing

A: Example of product B: Sprue example

The sprue separating mill extractor of the direct injection molding according to the invention is:

Hopper is attached to the main body side of the machine, the crusher is installed, the linear motion bearing and the rail are installed, and the horizontal bar is attached to the bearing plate, The cylinder rod is fixed to the lower part of the main body so that the horizontal bar moves up or down by cylinder operation. The transverse bars are fitted with other linear motion bearings and rails, and the plates attached to the bearings are equipped with cylinder blocks, lowering cylinders and guide bars for take-out operation. Attach a bunch of tongs to the lower rod side of the lower cylinder and the guide bar. An assembly such as a lower cylinder, a guide bar and a bunch of tongs constitutes one arm, which is referred to as arm 1.

Another bearing plate on the horizontal bar is equipped with a second lower cylinder, a guide bar and a rotating cylinder for product separation and removal, and a jig and a cutting mechanism for separating the product and sprue on the lower side of the lower cylinder. And the assembly of these lowering cylinders, guide bars and fixtures form an arm 2.

The left and right traveling cylinders of the arm 1 are installed on the upper side of the horizontal bar, and the rods are fixed to the brackets to which the forward and reverse cylinders are attached for the extraction operation of the arm 1.

Separate forward cylinders are also installed on arm 2, allowing arm 1 and arm 2 to independently perform the required movement, such as descending forward.

The crusher built into the main body has a rotating shaft installed at the center of the main body, and an auxiliary rotational speed for cutting sprues and runners inserted into the rotary shaft to a smaller dimension. In order to increase the cutting efficiency, several auxiliary rotations and auxiliary high precisions are installed correspondingly.

Under the auxiliary rotation, a cooling ring with conical perforations is placed so that the first crushed material can be easily lowered to the main grinding chamber by the auxiliary rotation and the auxiliary high accuracy.The main grinding degree is installed under the cooling ring. There is a net installed with pulverized particles that fall out of suitable dimensions. The main high accuracy, which engages the main grinding degree, comes between the half-requirements and engages with the main high accuracy and is fixed to the body.

The present invention will be explained with reference to the drawings of the preferred embodiments.

The main body 1 in the form of a square tube having a crushing device, and a hopper 2 is attached to one side of the main body, and a linear motion bearing 3 and a rail 4 are mounted on the other side. The plate 3 is attached to the bearing 3, and the horizontal bar 6 is attached to this plate. The rising cylinder 7 is installed on the right side of the horizontal bar, and the cylinder rod is fixed to the lower part of the main body 1 as the bracket 8 so that the horizontal bar 6 is raised or lowered by the operation of the cylinder 7.

In Fig. 2, the horizontal bar 6 is equipped with a linear motion rail 9 and a bearing 10, and a bearing 11 is attached with a plate 11 and a lowering cylinder 12 constituting an arm 1 on the plate 11. ), Attach the block 15, the guide bar 13 and the bundle of pliers 14 are assembled.

Assemble the bracket 16 to the bearing 10 'inserted solely on the rail 9 and attach the forward cylinder 1 17 for the take-out action of the arm 1, and the rod is fixed to the block 15. Secure to plate 18.

When the traveling cylinder 19 is installed on the side bar 6 and the rod is fixed to the racket 16 so that the traveling cylinder 19 is operated, the forward cylinder 17 and the arm 1 reciprocate simultaneously toward the main body 1. Done.

In Fig. 3, the plate 10 is assembled to the bearing 10 " inserted into the rail 9, and a block 23 is mounted on which the lower cylinder 2 21 and the guide bar 22 are mounted. On the lower rod side of the lower cylinder 2 (21) and the jig plate 24 for attaching the jig for separating the product, a tool for separating the product and the sprue is attached thereto, for example, a cutting jig such as a pneumatic nipper. (25) and a noise fixture 26 such as a vacuum suction pad, for example, for product noise, are assembled into the plate 20. A projection 20 'is formed on the plate 20, and a request is made at the end thereof to make the rocking plate 27 ) And assemble to pin 28. Rotating cylinder 29 is installed in swing plate 27, and pin 30 is inserted in the rod and pin 30 is fixed to block 23. Plate Another pin ball is formed at the bottom of the 20 and the pin 31 is inserted and fixed to the block 23.

In FIG. 4, when the rotary cylinder 29 is operated, the block 23 rotates the pin 31 around the rotary shaft, and the lower cylinder 2 (21), the guide bar 22, the jig plate 24, and the like assembled thereon. The assembly forming two is rotated as shown in FIG.

The forward cylinder 2 (33) is operated by installing a variable position bracket 32 on the left side of the horizontal bar 6, mounting the forward cylinder 2 33 on the bracket 32, and fixing the rod to the plate 20. Arm 2 moves backward to the right and left.

In FIG. 5, the main body 1 is a pulverization cylinder, and the rotation shaft 34 is installed at the center of the main body, and the auxiliary rotational degree 35 for cutting the sprues or runner scraps introduced into the shaft to a smaller dimension is installed and engaged therewith. The secondary high precision 36 is fixed to the main body 1 to be engaged with each other inside the main body 1, and a plurality of secondary rotational speeds 35 'and an auxiliary high precision 36' are correspondingly installed to increase cutting efficiency. . A cooling ring 37 of a conical inner hole is located below the auxiliary rotational speed 35, 35 ′, and the inside of the cooling ring 37 forms a coolant circulation hole 37 ′ to draw water through the hose nip 38. Circulate to cool the inside of the grinding chamber.

A main rotational speed 39 is installed below the cooling ring 37, and a web 40 through which the pulverized particles come out is installed on the outer circumference thereof, and the upper portion of the web 40 is flanged. 40 ') to be in close contact with the upper cooling ring 37 to increase the cooling efficiency. The main high precision 41 which meshes with the main rotational speed 39 comes out between the bisected requests of the mesh 40 and engages with the main rotational speed 39 and is fixed to the main body 1. Mounting the discharge wing 42 under the net 40, install the bottom cover 43 under the discharge wing 42, and fixed to the bottom of the main body 1 by mounting a bearing in the center. The elliptical discharge hole 43 'is drilled at the bottom of the bottom cover 43, and under the discharge hole 43', the finely pulverized particles are made to be inclined to the rotational direction of the discharge blade 42. Install it inclined so that it comes out.

In FIG. 6, the rotary shaft 34 is connected to the power source deceleration motor 37 via the coupling 45, 45 ′ and the extension shaft 46.

The operation of the apparatus of the present invention configured as described above will be described.

In the present invention, as shown in FIG. 7 for the sake of simplicity of the drawings and the description, the molded product takes out and separates a direct injection molded product in a form in which sprues (B) are attached to two disc-shaped products (A) and the product is removed. And sprues are to be crushed.

With respect to the take-out operation in the present invention, the method is well known and a detailed description thereof will be omitted, but in the present invention, as shown in FIG. 1, the horizontal bar 6 descends to stand in close proximity to the mold, thereby reducing the operating distance and shortening the take-out time. It was.

When the mold is opened, the bunch of tongs 14 of the arm 1 descends to catch the direct injection, and then the state of FIG. When it is confirmed that the molded object is caught in the bundle 14, the horizontal bar 6 starts to rise, and at the same time, the forward cylinder 1 (17) and the forward cylinder 2 (33) operate, and the arm 1 and the arm 2 are shown in FIG. ), The noise jig 26 holds the product A, the cutting jig 25 cuts the gate portion of the sprue B, and the advancing cylinder 1 (17) in the state in which the horizontal bar 6 is raised. ) And the forward cylinder 2 (33) are reversed, respectively, that is, the state of Fig. 8, that is, the sprue (B) is caught by the forceps of the arm 1 and the product (A) is caught by the noise fixture of the arm 2. .

When the ascending completion of the horizontal bar (6) is confirmed, the arm 1 is driven by the traveling cylinder 19 to drive toward the main body 1, the arm 2 is rotated by the rotary cylinder 29 is operated, and then the lower cylinder 2 (21) 9, the product (A) is out of the injection molding machine, the sprue (B) is directly above the hopper (2) as shown in Figure 9, when the noise jig (26) and the tongs (14) open, the product (A) is taken out The sprue B is put into the hopper 2.

The sprue B introduced into the hopper 2 is first cut into smaller dimensions by the auxiliary rotational speed 35 and the auxiliary high precision 36 built in the main body 1, so that the lower main rotational speed 39 and It comes to the main grinding chamber composed of the main high precision 41 and the web 40, where the particles pulverized into the desired particles fall down through the web 40, and the discharge blade 42 rotates as the discharge blade 42 rotates. When pushed to the perforated discharge hole (43 '), the pulverized material coming out through the discharge pipe 44 is immediately put into the injection molding machine can be reused.

Arms 1 and 2 perform a return operation and the horizontal bar 6 descends to enter the standby state of FIG. 1 to wait for the next cycle.

As described above, the present invention separates the sprue from the product by sprinkling the product and sprues from the direct injection during the cycle in which the ejector takes out the operation. Provides automatic take-off separation grinding drawer to pull out.

The apparatus of the present invention is a device with a very innovative advantage that can greatly reduce the work maneuver, clean the working environment and recycle 100% of raw materials by processing the product separation and sprue crushing of the direct injection.

Claims (1)

The shaft is installed vertically with the main body of the ejector as a grinder, and the grinding chamber includes grinding means including auxiliary rotation, cooling ring, main rotation, net, discharge vane, etc. Automatic ejector for injection machine with forced cooling inside, horizontal bar is installed on the side of the main body to move up and down, and the horizontal bar has arm 1 for take-out and running operation, product separation, rotation and take-out operation. Arm 2 is installed, that is, two arms with different modes of operation are installed on one side bar, and arm 1 and arm 2 are co-operated with the product during direct movement of the horizontal bar. As a structure for separating the sprues, the sprues are crushed by a crushing device built in the main body, and the products are taken out by the arm 2, and the product separation, extraction and sprinkling of the direct injection are carried out. Group grinding is automatically taken for the injection molding machine made one cycle.