JP3051661B2 - Method and apparatus for producing simultaneous filled molded articles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow molding machine, and more particularly to a method and apparatus for producing a simultaneously filled molded article using a simultaneous filled hollow molding machine.

[0002]

2. Description of the Related Art A method of manufacturing a simultaneously filled molded article by a conventionally used simultaneous filled hollow molding machine will be described.

A parison discharged from a die such as a crosshead or an accumulator head attached to the tip of an extruder is sandwiched between molds, and air is blown into the parison to form a container. Next, the mold is transferred below the filling nozzle of the filling nozzle elevating device, and the filling nozzle is lowered to fill the container with an appropriate amount of liquid. Next, the filling nozzle is pulled up from the container, the opening is sealed with a seal mold, the mold is opened, and the molded product with burr filled with the liquid is dropped into an accumulation box prepared below the mold.

[0004]

The method of manufacturing a simultaneous-filled molded article using a conventional simultaneous-filled hollow molding machine has the following problems since it is configured as described above.

That is, the body of the molded product with burrs is cooled by the filling liquid, but the burrs are cooled only from the outside by the mold. For example, if the molding cycle is shortened to improve productivity, the burrs are completely A heavy unburdened molded product with burrs falls into the accumulation box, and overlaps and accumulates with the previously molded burred product. As a result, uncooled burrs are fused with other burred molded products to cause defective products, and heavy burred molded products fall from high places.
The seal may be broken or damaged due to the impact. Furthermore, since the burrs of the molded product with burrs are separated manually by hand outside the machine after molding, productivity has not been improved, which has been a bottleneck such as labor saving and cost reduction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and does not drop a molded product with burrs which are simultaneously filled, but separates and sorts the molded product and burrs in the machine and moves the burrs out of the machine. It is an object of the present invention to provide a method and an apparatus for producing a simultaneously filled molded article to be carried out.

[0007]

According to the present invention, there is provided a method of manufacturing a co-filled molded product, comprising: filling a container formed with a parison in a mold with a filler; It is characterized in that the mold is opened by being supported from below by a molded article support device and held by a molded product holding device.

More specifically, the molded product with the burr is held by the molded product holder of the molded product holding device, and after the burr around the molded product is cut off by a punching blade, the molded product holder is opened. After moving the moving shooter from below the molded product holding device, and transporting the burr supported by the molded product holder, after transporting the movable shooter via the inclined moving shooter located below. I do.

An apparatus for manufacturing a simultaneously filled molded product according to the present invention comprises a die mounted at the tip of an extruder, a filling nozzle elevating device provided in parallel with the die, and a die and a filling nozzle elevating device. And a mold clamping device that reciprocates between lower positions of the filling nozzle, and a molded article support device is provided below the filling nozzle elevating device.

[0010] Further, a molded article holding device which reciprocates between a lower position of the filling nozzle elevating device and a molded article discharge position is attached to a side portion of the mold clamping device. It is preferable that an inclined moving shooter for selecting a molded product and a burr be provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION After filling a filler into a container formed by sandwiching a parison in a mold of a simultaneous filling hollow molding machine, the filled mold with burrs is supported from below and the mold is opened. . Next, the molded product with burrs is held by the molded product holder of the molded product holding device, and burrs around the molded product are pushed off by a punching blade. Next, the molded product holder is opened, and the molded product is conveyed out of the machine by a conveyer for carrying out the molded product via an inclined moving shooter positioned below. Next, the moving chute is moved from below the molded product holding device, the burrs supported by the molded product holder are projected, dropped on the burring carry-out conveyor, and transported outside the machine.

[0012]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram showing an apparatus for manufacturing a simultaneous filling molded product according to the present invention.

In FIG. 1, a crosshead (die) 22 is provided at the tip of an extruder 21.
A parison cutting device 24 for cutting the parison 23 discharged from the crosshead 22 is provided immediately below the parison 2. A filling nozzle elevating device 26 having a filling nozzle 25 at a lower portion is provided on a gantry 27 in parallel with the crosshead 22. Below the crosshead die 22 and the filling nozzle 25, there is provided a mold clamping device 30 which reciprocates between them by a mold transfer device 28 to open and close a mold 29.

On the side (right side in the figure) of the mold clamping device 30, a molded product holding reciprocatingly moves between the lower position D of the filling nozzle elevating device 26 and the molded product discharging position E by reciprocating movement of the mold clamping device 30. A device 31 is mounted. Below the filling nozzle elevating device 26, the molded article supporting device 1 is fixedly provided on the gantry 27 or the like via a bracket 2.

FIG. 2 is a configuration diagram showing a sorting device 36 for sorting the molded product A and the burr B. As shown in the figure, below the molded product holding device 31 at the molded product discharge position E, an inclined movable shooter 33 that reciprocates by a rodless air cylinder 32 is provided. A belt conveyor 34 for transporting the molded product A is provided below the front part of the moving chute 33, and a belt conveyor 35 for transporting the burrs B falling below the molded product holding device 31. . The position of the moving chute 33 can be adjusted up and down.

FIG. 3 is a configuration diagram showing the mold 29 attached to the mold clamping device 30 and the molded article supporting device 1. As shown in FIG.
That is, an air cylinder 3 is attached to a lower portion of a bracket 2 that supports the molded article support device 1, and a support pin is provided via a lift plate 4 at a tip of a piston rod that penetrates the bracket 2 and protrudes upward. 5 are provided. It is desirable that a plurality of the support pins 5 be provided so that the molded product C with burr does not tilt.

The mold 29 attached to the mold clamping device 30 includes a mold body 6, a seal mold 7 slidably provided on an upper part thereof, and a parison suction provided on an upper part thereof. And a plate 8. The parison suction plate 8 suctions and expands the upper outer peripheral wall of the parison 23 in order to insert the filling nozzle 25 from above the parison 23. FIG. 3A shows a state before the support pin 5 is inserted into the lower part of the molded product C with burrs in the mold 29, and FIG. FIG. 11 is a view showing a state in which the mold 29 is opened after being inserted into the lower part of the mold.

FIG. 4 is a structural view showing the molded article holding device 31. As shown in FIG. Air cylinders 11 for moving the respective molded product holders 10 back and forth are provided on both brackets 9 and 9a provided on both sides of the mold clamping device 30 so as to face each other.
Is installed. Also, on one bracket 9,
An air cylinder 13 for moving a punching blade 12 provided on the outer peripheral wall of the molded product holder 10 back and forth is attached,
On the other bracket 9a, an air cylinder 15 that moves back and forth on a deburring plate 14 provided on the outer peripheral wall of the molded product holder 10 is attached.

Next, the operation of the above embodiment will be described.

The parison 23 discharged from the crosshead 22 attached to the tip of the extruder 21 is sandwiched by a mold 29, and air is blown into the parison 23 to form a container. After the parison 23 is cut by the parison cutting device 24, the mold clamping device 30 to which the mold 29 is attached is moved by the mold transfer device 28 to a position D below the filling nozzle elevating device 26.

Next, the filling nozzle 25 provided in the filling nozzle elevating device 26 is lowered to fill the container with an appropriate amount of liquid, and as shown in FIG.
And the mouth is sealed (fused) with a seal mold 7.
It is referred to as a molded product C with burrs. Then, as shown in FIG. 3 (b), the molded article supporting device 1 provided below the mold 29.
The support pin 5 is raised by the air cylinder 3 and inserted into the lower part of the molded product C with burrs, and then the mold 29 is opened.

Next, the opened mold 29 moves across the parison 23 discharged from the crosshead 22. At this time, the molded product C with burr is supported by the support pins 5.

FIG. 5 is a view showing an example of a molded product C with burrs filled with a drug solution. The molded product C with burrs is composed of a molded product A and burrs B around the molded product A.
An insertion hole for the support pin 5 is formed in the lower part of the support pin 5.

Next, the operation of the molded article holding device 31 will be described in the order of steps with reference to FIG. (A) The molded product holder 1 opened at the outer peripheral position of the molded product C with burrs supported by the support pins 5 of the molded product support device 1
The molded article holding device 31 having 0 moves. (B) After the molded product holders 10 are moved toward the center by the air cylinder 11 to hold the molded products C with burrs, the support pins 5 are lowered. When the mold 29 sandwiching the next parison 23 moves to the position D below the filling nozzle elevating device 26, the molded product holding device 31 moves to the molded product discharging position E. (C) The burr B around the molded product C with burr is pushed off by moving the punching blade 12 with the air cylinder 13. (D) After returning the punching blade 12 to the original position, the molded product holder 10 is opened by the air cylinder 11, and the molded product A is dropped on the moving chute 33 moving to the left as shown by the solid line in FIG. , And then transferred to the next step by the belt conveyor 34. (E) After transporting the molded product A, the movable chute 33 is moved rightward as shown by the solid line in FIG. 2 and is sent to the left side in FIG. 2 and put into a crusher (not shown) to crush the burr B into small pieces and reuse them as raw materials.

In the above-described embodiment, the filling material to be filled by the filling nozzle 25 is a liquid such as a pharmaceutical solution.
Other solids may be used. Although the cylinders are air cylinders 3, 11, 13, 15, 32, they may be hydraulic cylinders or electric cylinders. Also, the parison 2 in the mold 29
Although the air is blown into the parison 23 in order to expand the parison 3, the parison 23 may be expanded by evacuating the air from the inner wall of the mold 29. Although the conveyors are the belt conveyors 34 and 35, any conveyors that can transport the molded product A and the burrs B may be used.

[0026]

Since the present invention is configured as described above, the following effects can be obtained. (1) The slanted moving chute can slide down onto the conveyor without dropping the filled heavy molded product from a high place, thereby preventing breakage or scratching of the molded product's seal. As a result, defective products can be prevented and the yield can be improved. (2) The cooled molded product and the burrs that are not completely cooled are sorted by reciprocating the moving chute and transported by each conveyor, so that fusion due to burrs is prevented and defective products are prevented. can do. (3) Since molding, filling, fusion (mouth), press-cutting of burrs, and sorting (molded products and burrs) can be performed in the machine, labor is not required and labor can be saved.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a simultaneous filling molded product manufacturing apparatus according to the present invention.

FIG. 2 is a configuration diagram showing a sorting device that sorts out burrs and a molded product.

3A and 3B are configuration diagrams showing a mold and a molded article supporting device, wherein FIG. 3A shows a state before the support pin is inserted, and FIG. 3B shows a state after the support pin is inserted and the mold is opened. .

FIG. 4 is a configuration diagram showing a molded article holding device.

FIG. 5 is a view showing a molded product with burrs.

FIG. 6 is a step diagram showing the operation of the molded article holding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Molded product support apparatus 2 Bracket 3, 11, 13, 15, 32 Air cylinder (cylinder) 4 Lift plate 5 Support pin 6 Mold main body 7 Sealing die 8 Parison suction plate 9, 9a Bracket 10 Molded product holder 12 Punching blade 14 Deburring plate 26 Filling nozzle elevating device 29 Die 30 Mold clamping device 31 Mold holding device 33 Moving chute 34, 35 Belt conveyor (conveyor) 36 Sorting device A Molded product B Burr C Molded product with burr D Filling nozzle elevating device Position of E Ejection position

Continuation of the front page (56) References JP-A-60-220728 (JP, A) JP-A-5-64834 (JP, A) JP-A-4-239626 (JP, A) JP-A-49-2864 (JP) JP-A-54-157161 (JP, A) JP-A-5-77804 (JP, A) JP-B-52-9704 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB Name) B29C 49/00-49/80

Claims (4)

(57) [Claims] 1. A molded product with burrs (C) is formed by sandwiching a parison (23) with a mold (29), and the mold (29) is moved to a position (D) below a filling nozzle elevating device (26). The molded product (C) is moved and filled with the filling material, and the filled molded product with burrs (C) is supported from below by the molded product support device (1), and the mold (29) is opened. The molded product with burrs (C) held in the molded product holding device (31) is moved to the molded product discharge position (E), and the burrs (B) around the molded product (A) are pressed off. A method for producing a simultaneous filling molded article, characterized by the following. 2. A molded product holder (10) of the molded product holding device (31) holds the molded product (C) with burrs, and a punching blade (12) forms a burr (B) around the molded product (A). ), The molded product holder (10) is opened, and the molded product (A) is positioned below and the inclined moving shooter (33) is positioned.
After moving the movable shooter (33) from below the molded product holding device (31), the burr (B) supported by the molded product holder (10) is projected and transported. The method for producing a co-filled molded product according to claim 1, characterized in that: 3. A die (22) attached to a tip of an extruder (21) for discharging a parison (23);
The filling nozzle elevating device (2) provided in parallel with (2)
6), the die (22) and the filling nozzle elevating device (2)
A mold clamping device (30) that reciprocates between the lower positions of (6) to open and close the mold (29), and a filled burr provided at a lower position (D) of the filling nozzle elevating device (26). A molded article support device (1) for supporting the molded article (C) from below, a lower position (D) of a filling nozzle elevating device (26) attached to a side of the mold clamping device (30), and a molded article discharge position ( E)
A molded product holding device (31) that reciprocates between the molds, holds the filled molded product with burrs (C), and pushes off burrs (B) around the molded product (A). Characteristic manufacturing equipment for simultaneous filling molded products. 4. An inclined moving shooter (33) for reciprocating and selecting a molded product (A) and a burr (B) is provided at the molded product discharge position (E). An apparatus for manufacturing a simultaneously filled molded product according to claim 3.