KR20090021665A - Olefine pre-heating device of injection molding - Google Patents

Olefine pre-heating device of injection molding Download PDF

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Publication number
KR20090021665A
KR20090021665A KR1020070086355A KR20070086355A KR20090021665A KR 20090021665 A KR20090021665 A KR 20090021665A KR 1020070086355 A KR1020070086355 A KR 1020070086355A KR 20070086355 A KR20070086355 A KR 20070086355A KR 20090021665 A KR20090021665 A KR 20090021665A
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KR
South Korea
Prior art keywords
heating
heating cylinder
raw material
injection molding
heater
Prior art date
Application number
KR1020070086355A
Other languages
Korean (ko)
Inventor
남윤효
Original Assignee
주식회사 우진세렉스
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Filing date
Publication date
Application filed by 주식회사 우진세렉스 filed Critical 주식회사 우진세렉스
Priority to KR1020070086355A priority Critical patent/KR20090021665A/en
Publication of KR20090021665A publication Critical patent/KR20090021665A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/74—Heating or cooling of the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76451—Measurement means
    • B29C2945/76454—Electrical, e.g. thermocouples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76929—Controlling method
    • B29C2945/76939—Using stored or historical data sets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

An injection molding machine equipped with an olefin pre-heating device is provided to injection-mold a product using olefin resin and other resin as a single device by separating a pre-heating device and assembling directly a resin pellet supply hopper to the heating cylinder. An injection molding machine equipped with an olefin pre-heating device comprises a lower insulating plate(4) having a lower dropping hole connecting to a pellet inputting hole(120) of a bracket; a cylinder(22) having a pellet drop passage(21); a lower flange(24) assembled to the top of the lower insulating plate; a heating container main body(2) including an upper flange(23) to which a pellet feed hopper(200) is detachably assembled; an upper insulating plate(3) detachably assembled between a heating cylinder main body and the pellet feed hopper; a heater(5) surrounding the cylinder of the heating cylinder body; and a thermocouple(6) mounted to either side of the heater in order to control the operation of the heater.

Description

Olefine pre-heating device of injection molding

In the present invention, when molding a product using an olefinic crystalline resin (PE, PP, etc.) of the thermoplastic resin used as a raw material in the injection molding machine of the olefinic crystalline resin (hereinafter referred to as 'olefin resin') The present invention relates to a pre-heating device for olefin material in an injection molding machine which preheats the olefin resin before it is injected into a heating cylinder which is injected by heating and dissolving the olefin resin in order to improve the plasticizing ability and contribute to the plasticization stability. .

Until now, the injection molding machine uses injection molding machines such as PE and PP as raw materials to improve the plasticization capacity of the olefin resins, thereby injecting products using PS resins and ABS resins instead of olefin resins. The plasticizing capacity is improved by changing the screw and the heating cylinder of the injection molding machine to a large size or the length of the screw and the heating cylinder is improved to improve the plasticizing capacity.

However, the prior art as described above has a problem that costs are incurred because the size of the screw and the heating cylinder must be drastically changed in the molding machine of the standard that has been carried out so far, and it is also suitable for plasticizing the olefin resin. The injection molding machine equipped with the manufactured screw and the heating cylinder can form a genuine product when the olefin resin is used as a raw material, but other resins other than the olefin resin such as PS resin and ABS resin can be used as raw materials. When molding a product, there may be a problem of deterioration of the resin and an instability of the metering to increase the defective rate of the molded product.In contrast, the molding of the product using PS resin or ABS resin as a raw material rather than an olefin resin Injection molding machine equipped with screw and heating cylinder When forming the output will plasticizing capability of the material is reduced is a problem that injection-molding is difficult, such as occurs with the product being again the output sa lowering the metering stroke is shortened.

Therefore, the present invention has been proposed to solve the above problems, the screw mounted on the standard injection molding machine manufactured to injection-molded the product using a resin other than the olefin resin (PS, ABS, etc.) as a raw material and It is an object of the present invention to provide an olefin resin preheating device that can stably form a product using an olefin resin as a raw material without changing the heating cylinder. In order to mold the product, the olefin resin preheating device is separated from the heating cylinder and the raw material supply hopper is directly mounted on the heating cylinder. As a single injection molding machine, the product is injected using olefin resin (PE, PP, etc.) as a raw material. Not only can it be molded, but it is also possible to stably injection molding products using AS resin, ABS resin, etc., as well as olefin resin. To ensure there are any other purpose.

The present invention as a means for achieving the above object,

A heating cylinder, a screw rotatably mounted inside the heating cylinder to transfer the water support material supplied into the heating cylinder, and fixedly mounted at the rear upper end of the heating cylinder, and input of raw material for injecting the support material into the heating cylinder. In the injection molding machine having a bracket in which a ball is formed, and a raw material supply hopper installed above the bracket to introduce a water support fee into the raw material injection hole,

A lower heat insulating plate detachably mounted on an upper surface of a bracket fixed to a rear upper end of the heating cylinder, and having a lower drop hole communicating with a raw material feeding hole of the bracket;

A heating cylinder body having a cylindrical portion having a raw material drop passage formed therein, a lower flange detachably assembled to an upper surface of the lower insulating plate, and an upper flange detachably assembled to the raw material supply hopper;

An upper insulating plate detachably assembled between the heating main body and the raw material supply hopper;

A heating heater installed while wrapping the cylindrical portion of the heating cylinder body;

A thermocouple mounted to one side of the heating heater to control the heating operation of the heating heater;

Characterized in that the configuration.

In addition, the heating cylinder body is formed in the center of the raw material drop passage of the cylindrical portion of the upper and lower ends of the closed cylindrical member, a plurality of ribs are fixed to both ends of each of the inner surface of the heating cylinder body and the outer surface of the cylindrical member. Characterized in that it is configured to partition the raw material falling passage in a fan shape.

In addition, the thermocouple is characterized in that it is configured to control the heating temperature of the heating heater is electrically connected to the heater controller which is provided separately from the heating cylinder body.

In the present invention, the olefin resin stored in the raw material supply hopper is preheated and supplied to the heating cylinder before the heating cylinder is supplied to the heating cylinder, so that the olefin resin can be changed without changing the specifications of the heating cylinder and the screw installed in the existing injection molding machine. It is possible to improve the plasticization ability of the product, and to provide the effect of injection molding high quality products. In addition, it is an injection molding machine that used injection molding of products using olefin resins. In case of injection molding the product with the raw material), the product can be molded by means of separating the preheater installed between the heating cylinder and the raw material supply hopper and assembling the raw material supply hopper directly to the heating cylinder. As an injection molding machine, olefin resins (PE, PP, etc.) and other resins (PS, ABS, etc.) are used as raw materials. It provides an advantage that allows the product can be molded.

Specific embodiments of the olefin material preheating apparatus of the injection molding machine according to the present invention will be described according to the accompanying drawings.

1 is a cross-sectional view showing the installation state of the preheating apparatus of the present invention, Figure 2 is a cross-sectional view of the heating cylinder body of the preheating apparatus of the present invention, Figure 3 shows a plan view of the heating cylinder body of the present invention.

Reference numeral 1 denotes a preheating apparatus, and the preheating apparatus 1 is assembled in a structure capable of being detachable between the heating cylinder 100 of the injection molding machine and the raw material supply hopper 200.

The bracket 110 is fixedly attached to the rear upper surface of the heating cylinder 100 in which the preheating device 1 is installed, and the raw material input hole for inserting the raw material into the heating cylinder 100 in the bracket 110. 120 is formed.

Inside the heating cylinder 100, a screw 300 for transporting the water support material introduced into the raw material injection hole 120 is rotatably installed.

The preheating apparatus 1 includes a cylindrical body 22 having a raw material drop passage 21 therein, and a heating cylinder body 2 having upper and lower flanges 23 and 24 formed at upper and lower ends thereof, respectively. ), Upper and lower heat insulating plates 3 and 4 assembled to the upper and lower flanges 23 and 24 of the heating cylinder body 2, and the cylindrical portion 22 of the heating cylinder body 2, respectively. It consists of a heating heater (5) formed in a state surrounding the outer circumferential surface, and a thermocouple (6) mounted on one side of the heating heater (5).

The thermocouple 6 is electrically connected and connected to a heater controller 7 installed in the injection molding machine in a state spaced apart from the preheater 1, and the heater 5 is heated by the heater controller 7. The heating temperature of is controlled at the set temperature.

In addition, a cylindrical member 8 having upper and lower ends closed is inserted into the cylindrical portion 22 of the heating cylinder body 2 so as to form a hollow portion. The inner surface and the cylindrical member 8 of the cylindrical portion 22 are inserted. A plurality of ribs 81 having both ends fixedly attached to each of the outer surfaces of the) divide the raw material dropping passages of the heating cylinder body 2 into a plurality of fan-shaped shapes, and thus the raw material dropping passage 21 is fan-shaped. The plurality of ribs 81 divided into shapes are heated by receiving heat from the heated cylindrical portion 22 by the heating operation of the heating heater 5 installed in the cylindrical portion 22 of the heating cylinder body 2. In addition, the cylindrical member 8 formed at the center of the raw material drop passage 21 is also heated by heat transfer by the plurality of ribs 81, so that the heating main body (100) in the raw material supply hopper (200). The olefin resin continuously dropped and supplied through the raw material drop passage 21 of 2) above Continuously and uniformly heated by the heat of the heating cylinder body 2 directly heated by the heating heater 5 and the heat of the cylindrical member 8 and the plurality of ribs 81 installed inside the cylindrical portion 22. It is injected into the heating cylinder 100 in a state.

On the other hand, the preheating device 1 configured as described above is detachably assembled between the heating cylinder 100 and the raw material supply hopper 200 of the injection molding machine by the fastening bolt (9).

That is, as shown in the figure, the lower heat insulating plate 4 is placed on the upper surface of the bracket 110 and the lower flange 24 of the heating tube body 2 is placed on the lower portion with the fitness bolt 9. When the flange 24 and the lower heat insulating plate 4 are screwed to the bracket 110 at the same time, the preheating device 1 is fixedly installed on the air cylinder 100, and also the upper flange of the heating body 2 The upper insulating plate 3 is placed on the upper plate 23, and then the raw material supply hopper 200 is placed on the upper insulating plate 3 and screwed with a fastening bolt 9 to feed the raw material supply hopper 200 onto the preheating device 1. ) Can be fixed and installed.

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

The preheating apparatus 1 is installed between the heating cylinder 100 and the raw material supply hopper 200 of the injection molding machine to supply the olefin resin stored in the raw material supply hopper 200 into the heating cylinder 100. Before it is heated to a set temperature, for this purpose, the operator sets the heating temperature of the heating heater 5 by operating the heater controller 7 in accordance with the preheating temperature of the olefin resin stored in the raw material supply hopper 200 The heating heater 5 heated to a temperature directly heats the heating cylinder body 2, and the upper and lower heat insulating plates assembled to the upper and lower flanges 23 and 24 of the heating cylinder body 2. (3) and (4) block the heat of the heating cylinder body 2 from being conducted to the raw material supply hopper 200 or the like, while dividing the inside of the cylindrical portion 22 of the heating cylinder body into a fan shape. Each of the ribs 81 and the cylindrical members 8 of the The heat is indirectly heated by the heat conducted from the main body 2, and thus the olefin resin falling from the raw material supply hopper 200 passes through the raw material dropping passage 21 of the heating main body 2. In this case, the raw material drop passage 21 is divided into a plurality of fan-shaped passages by a plurality of ribs 81 so that the olefin resin drop-fed from the raw material supply hopper 200 The olefine resin is supplied into the heating cylinder 100 while being evenly heated by being dispersed and dropped through the fan-shaped partition.

As described above, when the olefin resin stored in the raw material supply hopper 200 is supplied to the heating cylinder 100 in a pre-heated state in the course of passing through the preheating apparatus 1, the plasticization capacity of the olefin resin is improved. You can do it. Therefore, in the existing injection molding machine, instead of changing the heating cylinder and the screw, the olefin resin is stabilized by means of mounting the preheater 1 of the present invention between the heating cylinder 100 and the raw material supply hopper 200. It will be possible to plasticize.

On the other hand, since the preheating apparatus 1 of the present invention is configured to be detachably installed in an injection molding machine, when the product is injection molded using an olefin resin as a raw material, the heating cylinder 100 of the conventional injection molding machine is provided. And the preheater 1 between the raw material supply hopper 200 and preheated to a predetermined temperature before supplying the olepin resin supplied to the raw material supply hopper 200 to the heating cylinder 100. 100) or injection molding the product using resin other than olefin resin (PS, ABS, etc.) as a raw material, separates and disassembles the preheater 1 assembled in the injection molding machine. When the raw material supply hopper 200 is directly mounted on the 100, the water injection fee stored in the raw material supply hopper 200 is directly injected into the heating cylinder 100, and the existing injection molding machine is Likewise, the product can be injection molded.

1 is a cross-sectional view showing an installation state of a preheating apparatus of the present invention.

Figure 2 is a cross-sectional view of the heating cylinder body of the preheating device of the present invention.

3 is a plan view of the heating cylinder body of the present invention.

※ Description of the main parts of the drawings

1: preheating device 2: heating cylinder body

21: material drop passage 22: cylindrical portion

23: upper flange 24: lower flange

3: upper insulation board 4: lower insulation board

5: heating heater 6: thermocouple

7: heater controller 8: cylindrical member

81: rib 100: heating cylinder

110: bracket 120: raw material input hole

200: raw material supply hopper

Claims (3)

A heating cylinder, a screw rotatably mounted inside the heating cylinder to transfer the water support material supplied into the heating cylinder, and fixedly mounted at the rear upper end of the heating cylinder, and input of raw material for injecting the support material into the heating cylinder. In the injection molding machine having a bracket in which a ball is formed, and a raw material supply hopper installed above the bracket to introduce a water support fee into the raw material injection hole, A lower heat insulating plate detachably mounted on an upper surface of a bracket fixed to a rear upper end of the heating cylinder, and having a lower drop hole communicating with a raw material feeding hole of the bracket; A heating cylinder body having a cylindrical portion having a raw material drop passage formed therein, a lower flange detachably assembled to an upper surface of the lower insulating plate, and an upper flange detachably assembled to the raw material supply hopper; An upper insulating plate detachably assembled between the heating main body and the raw material supply hopper; A heating heater installed while wrapping the cylindrical portion of the heating cylinder body; A thermocouple mounted to one side of the heating heater to control the heating operation of the heating heater; The olefin material preheater of the injection molding machine, characterized in that the configuration. The method of claim 1, The heating cylinder body has a cylindrical member having a top and a bottom closed at the center of the raw material drop passage in the cylindrical portion, and a plurality of ribs having fixed ends at both ends of the inner surface of the heating cylinder body and the outer surface of the cylindrical member. An olefin material preheating apparatus for an injection molding machine, characterized in that the passage is partitioned into a fan shape. The method of claim 1, And the thermocouple is electrically connected to a heater controller provided separately from the heating main body to control the heating temperature of the heating heater.
KR1020070086355A 2007-08-28 2007-08-28 Olefine pre-heating device of injection molding KR20090021665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070086355A KR20090021665A (en) 2007-08-28 2007-08-28 Olefine pre-heating device of injection molding

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Application Number Priority Date Filing Date Title
KR1020070086355A KR20090021665A (en) 2007-08-28 2007-08-28 Olefine pre-heating device of injection molding

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KR20090021665A true KR20090021665A (en) 2009-03-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053633A1 (en) 2009-12-18 2011-06-22 Engel Austria Gmbh Plasticizing unit with insulating element in the filling area
CN109016416A (en) * 2018-08-03 2018-12-18 太仓曌信金属制品有限公司 A kind of high performance injection molding machine of plastic and injection molding forming method
CN113320096A (en) * 2021-07-15 2021-08-31 深圳市宝鸿精密模具股份有限公司 Automatic feeding and extrusion molding machine for machining shell mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053633A1 (en) 2009-12-18 2011-06-22 Engel Austria Gmbh Plasticizing unit with insulating element in the filling area
DE102010053633B4 (en) * 2009-12-18 2014-05-22 Engel Austria Gmbh Plasticizing unit with insulating element in the filling area for an injection molding machine
CN109016416A (en) * 2018-08-03 2018-12-18 太仓曌信金属制品有限公司 A kind of high performance injection molding machine of plastic and injection molding forming method
CN113320096A (en) * 2021-07-15 2021-08-31 深圳市宝鸿精密模具股份有限公司 Automatic feeding and extrusion molding machine for machining shell mold

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