JP3443706B2 - Manufacturing method of plastic hollow container - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbohydrate drug solution, an electrolyte drug solution, a plasma expander, an osmotic diuretic, an amino acid drug solution, a fat emulsion, and a high calorie drug solution. For liquid containers for intravenous injection, such as enteral nutrients, high protein nutrients, component nutrients, liquid medical food containers such as enteral high calorie nutrients, plastic containers for food, and various other uses. The present invention relates to a method for producing a plastic hollow container in which a plastic hollow container to be provided is continuously blow-molded. 2. Description of the Related Art A method of manufacturing a plastic hollow container having a mouth at one end and a hanging tool at the other end by blow molding is described in, for example, Japanese Patent Application Laid-Open No. 63-245392. Things are known. In this manufacturing method, at the time of blow molding, a burr portion having substantially the same diameter as the mouth is formed in series,
A pressurized fluid is introduced into the parison through the burr to blow-mold. [0003] In this type of blow-molded plastic hollow container, the hanging hole of the hanger is often closed by a parison.
As the next processing, there is a problem that an operation of opening a hanging hole in the hanging tool after the blow molding and an operation of closing a blow hole generated at the time of the blow molding must be performed. The present invention relates to a method of continuously molding a plastic hollow body of this kind by a rotary blow molding machine, wherein a continuous body supplied from the rotary blow molding machine is processed by a secondary processing machine in a preceding step or a subsequent step. After piercing the hanging hole in the hanging member of the hollow body, and then sealing the blow hole of the hollow body in the subsequent step or the preceding step, the hanging hole can be formed in the hanging member without displacement and the blow hole can be formed. It is an object of the present invention to provide a method for producing a plastic hollow container capable of sealing a container. [0005] In order to achieve the above object, a method for manufacturing a plastic hollow container according to the present invention comprises:
Hollow container for the preceding or subsequent process and the following process
Alternatively, connect the mouth of the hollow container of the preceding process with the
Rotary blow molding to form a continuous body of hollow containers
The machine consists of a lower mold, a bottom-side holding section, and a mouth-side holding section.
The lower mold has a bottom-side holding part and a mouth-side holding part.
It is rotatably supported in the vertical direction by the
For the mold, a punching blade that punches the hanging hole of the hanging tool at the site
There is a punched part with
A punch holding part is provided corresponding to the punch part,
The lower mold has a hollow in the subsequent process at the part corresponding to the mouth side holding part.
A push-up table is provided to push up the head of the container.
In the holding part, a cutting blade that cuts the hanging part side of the
The heating unit that melts and seals the blow hole at the top of the hollow container
With a secondary processing machine comprising a secondary processing section provided,
The plastic hollow container having a hanger to have and the other end a mouth at one end to a manufacturing method of molding continuously, the rotor
The continuum supplied from the reblow molding machine to the secondary processing section of the secondary processing machine is connected to the hanger of the hollow container of the preceding process by the lower die of the secondary processing section and the bottom side holding section, and The head of the hollow container in the process is placed between the lower mold and the mouth-side holding part, and then the mouth-side holding part of the secondary processing part is rotated downward, and the punching part is moved upward. The hanging part is punched out of the hanging part by the punching part, and the hanging part side of the disposal part is cut off.Then, the push-up table is moved upward to melt and seal the blow hole on the mouth side, and then discarded. It cuts the mouth side of the part. According to the method for manufacturing a plastic hollow container according to the present invention, the hanging member of the hollow container in the preceding step or the subsequent step and the mouth of the hollow container in the subsequent step or the preceding step are formed by the rotary blow molding machine. A continuous body of a continuous hollow container is formed by the disposal part. Next, when the continuous body is supplied to the secondary processing machine, the secondary processing machine pierces a hanging hole in the hanging tool of the hollow container in the preceding process or the subsequent process, and thereafter, performs the subsequent process or the preceding process. The blow hole on the mouth side of the hollow container is sealed. An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, 1 is a rotary blow molding machine,
This rotary blow molding machine 1 is equipped with a large number of blow molding dies 3 on a rotating pedestal 2. During the rotation of the rotating pedestal 2, each of the blow molding dies 3 causes a hollow container a in a preceding process.
A continuous body 8 of a plastic hollow container is continuously blow-molded through a discarding portion 7 by discarding the hanging tool 4 and the head 6 integral with the mouth 5 of the hollow container a2 in the subsequent process. . Reference numeral 9 denotes an extrusion head, and each mold 3 has a parison 10
Is to supply. Reference numeral 11 denotes a secondary processing machine. The secondary processing machine 11 has a configuration in which a plurality of secondary processing units 13 are provided on a conveyor-shaped lower seat 12, and the hanging holes of the hanging members 4 of the continuous body 8 supplied from the rotary blow molding machine 1. Secondary processing such as opening processing, sealing of blow holes, and removal of burrs of the discarded portion 7 are sequentially performed. FIG. 2 shows the details of each secondary processing section 13 of the secondary processing machine 11. FIGS. 3 and 4 show the continuum 8, and FIGS. The next processing step is shown. [0008] The above continuous body 8, as shown in detail in FIGS. 3 and 4, a hollow vessel a 1 of hanger 4 preceding step, the head integral with the mouth portion 5 of the hollow container a2 subsequent step 6 are formed in a series through a continuous disposal portion 7. A hanging hole 14 is formed in the hanging tool 4 by secondary processing described later.
In the state shown in FIGS. 3 and 4, the suspension hole 14 has not been opened yet. Reference numeral 15 denotes a blow hole formed in the head 6. As shown in FIG. 2, each secondary processing section 13
The lower mold 16 includes a lower mold 16, a bottom holder 17, and a mouth holder 18. The lower mold 16 has a bottom holder 17 and a mouth holder 18 pivotally movable in a vertical direction by a hinge 19. The lower die 16 is provided with a punching portion 20 for punching out the portion of the hanging hole 14 of the hanging tool 4 at a position corresponding to the bottom side holding portion 17. The punching section 20 has a punching blade 21. The bottom holding portion 17 is provided with a punching holding portion 22 corresponding to the punching portion 20. The lower die 16 is provided with a push-up stand 23 at a position corresponding to the mouth-side holding portion 18.
A cutting blade 24 for cutting the discarded portion 7 from the head 6 of the hollow container a2 in the subsequent process and a heating portion 25 for melting and sealing the blow hole 15 of the head 6 are provided. Although not shown, each of the secondary processing units 13 is driven by a hydraulic mechanism or another driving mechanism, and the heating unit 25 is heated to an appropriate temperature by an appropriate heat source. As shown in FIG. 1, the continuous body 8 supplied from the rotary blow molding machine 1 to the secondary processing machine 11 is subjected to secondary processing in the secondary processing machine 11 as shown in FIGS. You. The continuum 8 supplied to the secondary processing machine 11 is
The hanging tool 4 of the hollow container a1 in the preceding process is
The head 6 of the hollow container a2 in the subsequent process is between the lower die 16 and the mouth-side holding portion 18 between the lower die 16 and the bottom-side holding portion 17.
Are placed as shown in FIG. Next, the mouth-side holding part 18 of the secondary processing part 13 rotates downward, and as shown in FIG.
0, the hanging holes 14 are punched out of the hanging members 4 and formed, and the burr portion 26 is cut on the hanging member 4 side. Then
As shown in FIG. 7, the lifting table 23 moves upward, the blow hole 15 of the head 6 is melted and sealed by the heating unit 25, and the head 6 side of the burr 26 is cut off. 27 is a sealing portion of the blow hole 15. As described above, the hanging hole 1 of the hanging tool 4
4 is punched upward from below by the punching section 20, so that the burr section 26 of the disposal member 7 is reliably discharged downward. Further, in the secondary processing machine 11, since the hanging holes 14 of the hanging tools 4 are drilled first, and then the blow holes 15 of the head 6 are sealed, when the hanging holes 14 are drilled, the hanging tools 4 Does not cause displacement. For this reason, the hanging hole 14 is accurately drilled in the hanging tool 4. In addition. 2nd processing machine 11
The plastic hollow container A that has been subjected to the next processing is sequentially transported to a predetermined position. According to the present invention, the continuous body supplied from the rotary blow molding machine to the secondary processing section of the secondary processing machine is
The hanger of the hollow container of the preceding process is placed between the lower die of the secondary processing part and the bottom holding part, and the head of the hollow container of the following process is the lower die and the mouth holding part. Then, the mouth side holding part of the secondary processing part is rotated downward, the punched part is moved upward, and the punched part is formed by punching a hanging hole in the hanging tool and discarded. By cutting the hanging side of the hanging part, and then moving the push-up table upward to melt seal the blow hole on the mouth side and cutting off the mouth side of the discarded part, Is punched upward from below by the punching portion, so that the burr portion of the disposal member is reliably discharged downward. Also, in the secondary processing part, the hanging holes of the hanging tools are drilled first, and then the blow holes on the head are sealed. The holes can be sealed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a manufacturing apparatus that performs a manufacturing method according to the present invention. FIG. 2 is a detailed perspective view of a part of the device shown in FIG. FIG. 3 is a front view of a continuous body formed by the method according to the present invention. FIG. 4 is a side view of FIG. 3; FIG. 5 is a partially broken side view showing a secondary processing step according to the present invention. FIG. 6 is a partially broken side view showing the next step of the secondary processing according to the present invention. FIG. 7 is a partially broken side view showing a further next step of the secondary processing according to the present invention. [Description of Signs] 1 Rotary blow molding machine 2 Rotary pedestal 3 Blow molding die 4 Hanging tool 5 Mouth 6 Head 7 Discarding portion 8 Continuous body 9 Extrusion head 10 Paris 11 Secondary processing machine 12 Conveyor-shaped lower seat 13 Secondary Processing part 14 Hanging hole 15 Blow hole 16 Lower die 17 Bottom side holding part 18 Mouth side holding part 19 Hinge part 20 Punching part 21 Punching blade 22 Punching holding part 23 Push-up table 24 Cutting blade 25 Heating part 26 Burr part 27 Sealing Stop A Plastic hollow container a1 Hollow container a2 in preceding process Hollow container in subsequent process

Claims (1)

(57) [Claims] [Claim 1] Hanging a hollow container in a preceding process or a succeeding process
Between the tool and the mouth of the hollow container of the succeeding or preceding process.
To form a continuous body of hollow container that is continuous through the
It is composed of a tally blow molding machine, a lower mold, a bottom side holding section and a mouth side holding section,
In the lower mold, the bottom side holding part and the mouth side holding part are in the hinge part
It is pivotally supported so that it can rotate more vertically, and the lower die
Has a punching blade that punches out the hanging hole part of the hanging tool
A punching part is provided, and a lower die
The punching and holding part is provided corresponding to the part.
At the part corresponding to the mouth side holding part, the head of the hollow container of the subsequent process
There is a push-up table that pushes up the part, and the mouth side holding part is
Cutting blade for cutting the hanging part side of the disposal part and hollow of the subsequent process
A heating unit is provided for melting and sealing the blow hole in the head of the container.
It was by the secondary processing machine comprising a secondary processing unit, a manufacturing method of molding continuously hollow plastic container having a suspender mouth portion has and the other end to one end, 2 from the rotary blow molding machine The continuum supplied to the secondary processing unit of the next processing machine is connected to the hanging tool of the hollow container of the preceding process between the lower mold and the bottom side holding unit of the secondary processing unit and the hollow container of the subsequent process. The head is placed between the lower mold and the mouth-side holding part. Then, the mouth-side holding part of the secondary processing part is rotated downward, the punched part is moved upward and suspended by the punched part. A hanging hole is formed by punching a hanging hole in the tool, and the hanging tool side of the discarded part is cut off. Then, the lifting table is moved upward to melt seal the blow hole on the mouth side, and the mouth side of the discarded part. And a method for producing a hollow plastic container.