JPH0966558A - Method and apparatus for cutting waste part of hollow molded product in hollow molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically remove all of burrs and to perfectly separate burrs and a hollow molded product by cutting the upper burr of a held hollow molded product after lower burr is removed and allowing the upper burr to fall by air to recover the same while recovering the molded product through a chuter. SOLUTION: A molded product 25 after the removal of lower burr is held by a molded product holding device 26 and moved under a molded product cutter 24. The upper burr 25a of the molded product is cut by the falling cutter 33 of the molded product cutter 24 and allowed to fall on a burr feed belt conveyor 10 by the air blown at the same time to be fed along with the lower burr 56. The molded product 25 from which all of burrs are removed is held by a molded product taking-out device 27 and a mold attaching plate and the bracket of the holding device are opened in cooperation with a mold clamping device 4 and, at the same time, the molded product holding device 26 also becomes an open state. Next, the molded product taking-out device 27 is moved to a feed-out position H to be released at this position and the molded product 25 falls on a chuter 28 to be fed out by a molded product feed belt conveyor 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cut-out of a hollow molded product of a hollow molding machine, and more particularly, to cutting a burr, punching a hanging hole, and separating and collecting a burr and a molded product in the hollow molding machine. For new improvements to do.

[0002]

2. Description of the Related Art As a conventional method and apparatus for cutting the cut-out thickness of a hollow molded product in a hollow molding machine of this type, as disclosed in, for example, Japanese Patent Application Laid-Open No. 6-320611, a molded product is disclosed. The upper burr was automatically cut with a rotary cutter.

[0003]

Since the conventional method and apparatus for cutting the thickness of hollow molded products in the hollow molding machine are configured as described above, the following problems exist. That is, since the cut upper burr and lower burr (cut in the mold) are not separated from the molded product, but fall on the conveyor installed below the mold as they are,
The molded product fell onto the lower burr that was not completely cooled and solidified, and the lower burr adhered to the molded product, resulting in a defective product. Further, since the burr and the molded product are manually sorted out of the hollow molding machine, the productivity cannot be improved, which is a bottleneck for labor saving and cost reduction.

The present invention has been made to solve the above problems, and in particular, it is designed to perform cutting of burrs, punching of hanging holes, and separation and collection of burrs and molded products in a hollow molding machine. It is an object of the present invention to provide a method and an apparatus for cutting out a cutout of a hollow molded product of a hollow molding machine.

[0005]

According to the method for cutting the cut-out of a hollow molded product of a hollow molding machine according to the present invention, a parison hanging from a crosshead of the hollow molding machine is held by a mold and air is injected to mold the parison. In a hollow molding machine in which the lower burr is cut in the mold, the hollow molded product is taken out through a molded product take-out device and is held by a molded product holding device, on the molded product held by the molded product holding device. After cutting the burr with the molded product cutting device, blow it down with the air of the device,
In this method, the upper burr and the hollow molded product are dispersed and collected through the shooter by the molded product take-out device after the upper burr is blown off and collected.

More specifically, a method of forming a hole in the hanging part of the molded product by the hole punching device of the molded product holding device, and removing the lower burr and the upper burr and forming the hole in the hollow molding machine. Is.

More specifically, it is a method of carrying out and collecting the lower burr and the upper burr by a burr transfer belt conveyor, and carrying out and collecting the molded product by a molded product transfer belt conveyor.

[0008] In a hollow molding machine according to the present invention, a cut-and-cutting device for hollow-molded products is such that a parison hanging from a crosshead of the hollow molding machine is held by a mold, and air is injected to mold the parison. In a hollow molding machine in which a hollow molding machine, in which a burr is cut, is taken out through a molding product take-out device and held by a molding product holding device, is provided in the molding product holding device and cut. This is a configuration including a blow-off device for removing the subsequent upper burr with air, and a hole punching device provided in the molded product holding device for forming a hole in the handle of the molded product.

More specifically, a burr conveying belt conveyor for carrying out the lower burr and an upper burr at a lower position of the mold, and a lower part of the molded product take-out device for carrying out the molded product. And a molded product conveying belt conveyor for performing the above.

More specifically, the blow-off device comprises an electromagnetic valve connected to an air source and an air nozzle connected to the electromagnetic valve, and the hole punching device comprises a pin protruding and retracted by an air cylinder. is there. Therefore, the cut upper burr of the molded product is blown off from the molded product by the air from the air nozzle of the blow-off device, and is dropped onto the burr conveyance conveyor where the lower burr drops. A hole is punched by a hole punching device in the hanging part of the molded product from which the upper burr and the lower burr are removed, and the molded product in which this hole is formed is carried out by the molded product conveying belt conveyor, so that the hollow molding machine , Deburring, punching holes, and separating burrs and molded products.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of a method and apparatus for cutting a cutout of a hollow molded product of a hollow molding machine according to the present invention will be described in detail below with reference to the drawings. In FIG.
What is indicated by is a mold transfer device mainly composed of a ball screw 2 and a nut body 3, on which a mold 5 having a mold clamping device 4 can reciprocate along the direction of arrow A. Is configured. When the mold 5 is located at the position shown by the dotted line on the left side in FIG.
The parison 8 corresponding to the cross head 7 of the extruder 6 and hanging from the cross head 7 is cut by the parison cutter 9. At the lower position of the mold 5, there is provided a burr transfer belt conveyor 10 arranged side by side with the mold transfer device 1. The burr transfer belt conveyor 10 drops an upper burr 25a and a lower burr which will be described later. The burr 56 is conveyed leftward in FIG. 1 and collected.

Hollow molding machine 20 having the mold transfer device 1
An air blowing device 2 having an air nozzle 22 on a base 21 of
3 and a molded product cutting device 24 are fixedly provided, and a molded product holding device 26 for holding a molded product 25 is fixedly connected to the mold clamping device 4. Further, the base 21 is provided with a molded product take-out device 27 for taking out the molded product 25 in the mold 5 and carrying it to the molded product holding device 26. The molded product take-out device 27
A shooter 28 is provided in the lower part of the
A molded product conveyor belt conveyor 29 is provided at a lower position of.

The molded product cutting device 24 is provided with a motor 3 as known from Japanese Patent Laid-Open No. 6-320611, for example.
It consists of a pair of arms 32 that open and close and rotate through a connecting mechanism 31 by the rotation of 0, and a cutter 33 provided on each arm 32 causes a molded product 2 to be formed as shown in FIG.
The upper burr 25a, which is the waste meat on the upper part of 5, can be cut at the cutting position 25A. The arm 32 and the cutter 33 are configured to be movable in the vertical direction by the connecting mechanism 31, and the upper burr 25
Only when cutting a, descend from the top to the position shown in FIG.
After cutting, it is configured to escape upward again.

The molded product holding device 26 is shown in FIGS.
, The pair of air cylinders 42, 43 provided on the die mounting plate 40 provided on the die clamping device 4 and the holding device bracket 41 are formed into a substantially L-shape. Product holders 44 and 45 are provided, and the molded product 25 can be held by the molded product holders 44 and 45. As is well known, the mold mounting plate 40 and the holding device bracket 41 are configured to open from the closed state in FIG. 2 in conjunction with the operation of the die clamping device 4 as shown in FIG.

The molded product holding device 26 is provided with a blow-off device 50 for blowing off the upper burr 25a after cutting, as shown in FIG. , An air nozzle 54 connected to the air source 51 via a solenoid valve 52 and a throttle valve 53. The air nozzle 54 is bent into an L shape and is held by the molded product holders 44 and 45. Top burr 2 after cutting 25
5a can be blown off. Since the groove-shaped upper burr shooter 100 having the nozzle cover 55 is arranged near the air nozzle 54, the air can be concentrated and supplied to the upper burr 25a, and the removed upper burr 25a can be Upper shooter 1
It is configured to drop downward through 00.

Next, the molded product holding device 26 is provided with a hole punching device 60 for forming a hole 58 of a hanger 57 formed in a lower burr 56 of the molded product 25. A pair of first and second punching arms 61 and 62 for forming the device 60 are provided, and the first punching arm 61 is connected to the supply mounting plate 40 and has a molded product at its tip. A receiver 61a is provided. The second punching arm 62 is provided so as to be retractable by a punching air cylinder 63 provided in the holding device bracket 41, and a pin 62a for punching is provided at the tip of the second punching arm 62. It is provided.

Further, the molded product takeout device 27 is shown in FIG.
To 10 as shown in FIG. 10 so that two molded products 25 can be chucked at one time. That is, a bracket 60 attached to the base 21 is provided with a slide cylinder 61, and each arm 63a of a known air chuck 63 is provided on the slide cylinder 61 via an actuator 62 so as to be openable and closable. Thus, each of the molded products 25 can be chucked by the air chuck 63. In addition,
The air chuck 62 and the arm 63a enable the arm 63a to take out the molded product 25 from the mold 5 to the molded product holding device 26 and the carry-out position H to reciprocate by the operation of the slide cylinder 61. It is configured.

Next, the operation will be described. First, mold 5
The lower burr 56 of the molded product 25 that is hollow-molded by blowing air into the parison 8 is cut and removed by a well-known lower burr cutting device (not shown) with the mold 5 opened. The lower burr 56 is dropped onto the lower burr transport belt conveyor 10 and is carried out. The molded product 25 after the removal of the lower burr 56 is chucked by the advanced molded product holding device 26 and retracts to stop at a position below the molded product cutting device 24, and as shown in FIG. Is held by the molded product holders 44 and 45, and is cut by the rotation of each cutter 33 of the molded product cutting device 24, and at the same time, the solenoid valve 52 is opened and the air is blown from the air nozzle 54 to the upper burr 25a. Attached, upper burr 25a
Is blown off, falls on the burr transport belt conveyor 10 and is carried out together with the lower burr 56 for reuse.

As described above, the molded product 25 from which the burrs 25a and 56 are removed is held by the molded product holding device 26, and the pin 62a is attached to the molded product receiver 61a of the next hole punching device 60. By moving forward, the hanging hand 5 of the molded product 25
The hole 58 of 7 is punched out, and the punching burr 70 after punching is dropped onto the burr conveying belt conveyor 10 and carried out as shown in FIG. As mentioned above, all burrs 25a, 56,
As shown in FIG. 2, the air chuck 62 of the molded product 25 from which 70 has been removed is advanced by the operation of the slide cylinder 61 of the molded product take-out device 27, and is chucked by the chucking operation of each arm 63a. As shown in FIG. 3, the mold mounting plate 40 and the holding device bracket 41 open in conjunction with the operation of the mold clamping device 4 and at the same time each molded product holder 4
4, 45 are also in the open state and separated from the molded product 25, and the molded product 25 is chucked only by each arm 63a, and the molded product 25 is retracted from the upper burr cutting position to the carry-out position H by the retraction of the air chuck 62. And move it to the carry-out position H
By opening each arm 63a with, the molded product 25 drops onto the shooter 28, and the molded product transport belt conveyor 2
9 carried out. The above-mentioned molded product cutting device 2
4, the hole punching device 60 and the molded product take-out device 27 are merely examples, and any of them may have a different configuration from the above by a combination of well-known means. For example, the molded product cutting device 24 may have a horizontal blade forward / backward configuration, the hole punching device 60 may have a drill type configuration, and the molded product unloading device 27 may have a suction cup type configuration. The blow-off device 50 and the hole punching device 60 provided in the above-described molded product holding device 26 are individually shown in an easy-to-understand manner in the drawing, but in reality, the molded product holding device 26 is shown.
It is composed of a composite and integrated.

[0020]

As described above, the method and the apparatus for slicing the hollow molded product in the hollow molding machine according to the present invention have the following effects. That is, 1). All burrs can be automatically removed without human intervention, and since burrs and molded products can be completely separated and selected, no labor is required and labor can be saved. 2). Since burr does not scatter and can be completely collected and stains can be prevented, good quality burr can be recycled. 3). Since the burr and the molded product are separated and collected, it is possible to prevent a defect that the burr is fused to the molded product. Four). Furthermore, removal of each burr, formation of a hole, collection of a burr, and collection of a molded product can all be performed in the blow molding machine, and a system of the blow molding machine can be configured.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of a blow molding machine according to the present invention.

FIG. 2 is a specific configuration diagram showing the molded product holding device of FIG.

3 is a configuration diagram showing an open state of FIG. 2. FIG.

FIG. 4 is a configuration diagram showing blow-off of an upper burr.

FIG. 5 is a configuration diagram showing punching.

FIG. 6 is a configuration diagram showing completion of punching of holes in FIG. 5;

FIG. 7 is a configuration diagram showing a molded product immediately after molding before deburring.

FIG. 8 is a plan view showing a molded product take-out device.

9 is a side view of FIG.

FIG. 10 is a specific configuration diagram of FIG. 9.

[Explanation of symbols]

 5 Mold 8 Parison 10 Burr Conveyor Belt Conveyor 20 Hollow Molding Machine 25 Hollow Molded Product 25a Upper Burr 26 Molded Product Holding Device 27 Molded Product Extracting Device 29 Molded Product Conveying Belt Conveyor 50 Blowing Device 51 Air Source 52 Solenoid Valve 54 Air Nozzle 56 Lower burr 57 Lifter 58 Hole 60 Hole punching device 62a Pin 63 Air cylinder

Claims (6)

[Claims] 1. A parison (8) hanging from a crosshead (7) of a hollow molding machine (20) is held by a mold (5), and air is injected to mold the parison (8). In the hollow molding machine, the hollow molded product (25) obtained by cutting the burr (56) is taken out through the molded product taking out device (27) and held by the molded product holding device (26). After cutting the upper burr (25a) of the hollow molded product (25) held by (26) with the molded product cutting device (24), it is dropped downward by the air of the blow-off device (50) to obtain the upper burr (25a). After blown off and collect the hollow molded product (25) by the molded product take-out device (27) through the shooter (28) to separate the upper burr (25a) and the hollow molded product (25). A method for cutting meat from a hollow molded product in a hollow molding machine, the method comprising: 2. A hole punching device for the molded product holding device (26).
By forming a hole (58) in the hanging hand (57) of the molded product (25) by (60), removing the lower burr (56) and the upper burr (25a) and the hole (58)
2. The method for cutting meat according to claim 1, wherein said forming is carried out in said hollow molding machine (20). 3. The lower burr (56) and the upper burr (25a) are carried out by a burr transfer belt conveyor (10) and collected, and the molded product (25) is carried out by a molded product transfer belt conveyor (29). 3. The method for cutting meat according to claim 2, wherein the hollow molded product is cut into pieces. 4. A parison (8) hanging from a crosshead (7) of a hollow molding machine (20) is held by a mold (5), and air is injected to mold the parison (8). In the hollow molding machine, the hollow molded product (25) obtained by cutting the burr (56) is taken out through the molded product taking out device (27) and held by the molded product holding device (26). A blow-off device (50) provided on (26) for removing the upper burr (25a) after cutting with air
And the molded product (25) provided in the molded product holding device (26)
Hole punching device (60) for forming a hole (58) in the hanger (57) of the
An apparatus for cutting meat of hollow molded products of a hollow molding machine, comprising: 5. A burr transfer belt conveyor (10) for carrying out the lower burr (56) and an upper burr (25a), and a molded product take-out device (27) at a lower position of the mold (5). ), And a molded product conveying belt conveyor (29) for carrying out the molded product (25), the waste molded product of the hollow molded product according to claim 4, Cutting device. 6. The blow-off device (50) comprises a solenoid valve (52) connected to an air source (51) and an air nozzle (54) connected to the solenoid valve (52), and the hole punching is performed. The device (60) according to claim 4 or 5, characterized in that the device (60) comprises a pin (62a) protruding and retracted by an air cylinder (63).