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1. 发明专利

JPH08150465A PREPARATION OF NOZZLE FOR INJECTION MOLDING 失效
公开(公告)号：JPH08150465A
公开(公告)日：1996-06-11
申请号：JP22993195
申请日：1995-09-07
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B22D19/00 , B23K1/00 , B23K35/30 , B23P15/00 , B29C45/20 , B29C45/27
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a nozzle for injection molding executing brazing sealing a space surrounding a heating wire and the casting of a thermally conductive material into the sealed space in a single cycle of a vacuum furnace. SOLUTION: A heating wire is mounted in a space 42 formed between an inner core 12, an outer collar and an outer sleeve 38. The space 42 is first sealed by brazing with a nickel alloy brazing material, and then, a copper conductive material 50 is cast into the space 42. Both the brazing and casting are done in a single cycle of a vacuum furnace. An insulative cap 54 is placed over the nozzle assembly 46 so as to cool the thermally conductive material melted by an inert gas fed to the vacuum furnace from the bottom in due order. This produces unidirectional solidification to avoid the formation of voids in the thermally conductive material, so that the thermal conductivity of the nozzle can be improved.

2. 发明专利

JPH07137079A INJECTION MOLDING DEVICE 失效
公开(公告)号：JPH07137079A
公开(公告)日：1995-05-30
申请号：JP13884894
申请日：1994-06-21
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/26 , B29C45/00 , B29C45/20 , B29C45/27
摘要： PURPOSE: To allow excessive heat to rapidly escape through a nozzle seal while keeping the heat taken by a mold little. CONSTITUTION: The nozzle seal is provided in the seat part 54 provided in the front end part 52 of a nozzle and a guide piece 76 to which a center passage 40 for guiding a molten material is formed is constituted of a high heat conductive material in order to allow heat to rapidly escape during the advance of a thermal cycle. The outside support piece 78 being in contact with a mold cooled in order to hold airtightness is constituted of a low heat conductive material in order to reduce the heat taken by a mold.

3. 发明专利

JPH0752204A INJECTION MOLDING NOZZLE 失效
公开(公告)号：JPH0752204A
公开(公告)日：1995-02-28
申请号：JP13996694
申请日：1994-06-22
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/20 , B29C45/26 , B29C45/27
摘要： PURPOSE: To provide a heating nozzle on which a thermocouple element can be mounted at a predetermined position in a detachable manner and be firmly self-retained at that position. CONSTITUTION: An injection molding nozzle 12 on which a thermocouple element 88 can be mounted in a detachable manner and be self-retained at a predetermined position has a front portion and a large diameter rear collar portion 56 having a thermocouple element duct. A thermocouple element hole extends from the front end of the nozzle to the rear end thereof and goes over the rear end thereof from the thermocouple element duct to extend outwardly. The properly bendable and holdable front part of the thermocouple element 88 is inserted in the hole of the front end part of the nozzle and bent so as to pass through the collar portion to extend rearwardly in the duct. The rear portion of the thermocouple element 88 is bent to the predetermined position of the groove 84 of the rear end of the nozzle. The thermocouple element 88 is firmly retained itself at this position and the nozzle is attached in a mold.

4. 发明专利

JPH06304971A INJECTION MOLDING DEVICE 失效
公开(公告)号：JPH06304971A
公开(公告)日：1994-11-01
申请号：JP6494994
申请日：1994-04-01
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C33/38 , B29C45/22 , B29C45/27 , B29C45/30
摘要： PURPOSE: To shorten a heat cycle time in injection molding without receiving damage by forming the core part of a center shaft so as to pierce an outer cylinder and constituting the core part out of a heat conductive ceramics material. CONSTITUTION: The center shaft 90 of a torpedo has a core part 112 provided so as to pierce an outer cylinder 114. A spiral blade 49 extends outwardly from the outer cylinder 114 and the core part 112 holds concentricity with respect to a gate 14 and has a conical front tip 116 and the conical rear end part 120 which thrusts through the outer end part 118 of the outer cylinder 114 to extend rearwardly and whose leading end is directed to the molten material flowing through a center hole 42. The outer cylinder 114 is produced from steel having abrasion resistance and corrosion resistance but the core part 112 is formed by using a ceramics material like silicon carbide. When the molten material is throttled to be accelerated in the gate 14, the abrasion of the outer surface of the core material generated in the area of the front tip is reduced and, even when the heating condition of the gate region is changed during continuous molding, a protective coating is not applied to the core part 112 and response can be made rapid.

5. 发明专利

JPH0623795A PRODUCTION OF INJECTION MOLDING NOZZLE 失效
公开(公告)号：JPH0623795A
公开(公告)日：1994-02-01
申请号：JP33160892
申请日：1992-12-11
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/20 , B29C45/03 , B29C45/27 , B29C45/73 , B29C45/74
摘要： PURPOSE: To firmly fix the ends of two electric heating wires on a nozzle main body and form plural wire terminals for drawing the wires out while keeping the distance from a counterpart. CONSTITUTION: Electric heating wires 28 are provided with a U-shaped bending section 29 close to a front end 16 of a nozzle main body 10 and two terminal sections 30 protruded in the radius direction close to a rear end 14. After the electric heating wires 28 are wound on a double spiral channel 18 of the nozzle main body 10, a front collar portion 46 and a rear color portion 60 are mounted on the nozzle main body 10. At that time, a slot 72 into which the terminals 30 from which the protruded ends of electric heating wires 28 are passed through is formed between both collars 46 and 60. A stud 84 with two through-holes 86 running through the interior is mounted on the slot 72 between the forward collar 46 and the rear collar 60. Above element members are brazed and bonded integrally all together in a vacuum furnace. The U-shaped bending section 29 of electric heating wire 28 and the terminals 30 are fixed on respective positions during the brazing process.

6. 发明专利

JPH05245884A 失效
公开(公告)号：JPH05245884A
公开(公告)日：1993-09-24
申请号：JP32530692
申请日：1992-12-04
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/26 , B29C45/27 , B29C45/30 , B29C45/73
摘要： PURPOSE: To provide an injection molding device unnecessary of mounting a heating means onto a nozzle or probe itself equipped on the outlet of a distribution manifold. CONSTITUTION: An air tight conductive member 38 is equipped coaxially with a gate 34 in between a distribution manifold 10 and a cavity plate 14. The air tight conductive member 38 is constituted by connecting a tip shaft to a collar by plural spiral blades. The collar is mounted bridged on an insulative air space 50 between the distribution manifold 10 and the cavity plate 14 to prevent melt leaking. Heat received through the rear end part of the collar in contact with the distribution manifold is transferred to the gate 34 area through the spiral blades and the tip shaft. The rear end part of the tip shaft is placed protruded to the outlet passage 26 on the melted material passage to facilitate to transfer heat of the melted material. The tip shaft is constituted of a highly heat conductive core part and an abrasion resistant outer cylinder.

7. 发明专利

JPH05147089A INJECTION MOLDING DEVICE HAVING HEATING ELEMENT DIVIDED INTO CAVITY FORMING INSERTS 失效
公开(公告)号：JPH05147089A
公开(公告)日：1993-06-15
申请号：JP29715691
申请日：1991-11-13
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/00 , B29C45/26 , B29C45/27 , B29C45/73
摘要： PURPOSE: To provide a nozzle that solves a problem in that thermal response is delayed due to cooling at the cavity insert and heating at the nozzle. CONSTITUTION: This thermal gate injection molding device has a cavity molding insert 14 separated from a high temperature nozzle, and the cavity molding insert 14 is provided with a combination of heating and cooling devices extending around the center molten bore leading to a gate 76. The insert 14 is also provided with an integrated electro-heating element 56, inside which multiple coils are arranged next to the gate 76. Drive force to the heating element 56 is turned on and off during the thermal gate cycle, and the combination of heating and cooling devices improves the thermal response to shorten the cycle time of injection molding.

8. 发明专利

JPH05111946A INJECTION MOLDING DEVICE HAVING HEATING VALVE BODY 失效
公开(公告)号：JPH05111946A
公开(公告)日：1993-05-07
申请号：JP9972692
申请日：1992-04-20
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/03 , B29C45/26 , B29C45/28 , B29C45/73
摘要： PURPOSE: To sufficiently heat the front end of a thin-long valve element of a valve gate type injection-molding device so that the front end strongly fits to the gate. CONSTITUTION: This valve gate type injection-molding device is provided with a thin-long valve element 50, which is provided with integrated electrothermal elements 40 housed in nozzles 10, which are used to execute additional heating. A drive mechanism is engaged with a rear end 24 of the valve element to reciprocate it between the position where the valve element 50 retreats to open the gate and the position where the valve element 50 advances to close the gate. The valve element 50 is provided with a head 120 extending afterward from the nozzles 10. The heading element 40 is provided with an external terminal extending from the head through the long hole of an attaching sleeve 112 to the outside. A result is that an electric supply line is made close to the movable terminal between a fixed nozzle 10 and a fixed cylinder 102 of the drive mechanism.

9. 发明专利

JPH04226728A SPACER MEMBER FOR INJECTION MOLDING 失效
公开(公告)号：JPH04226728A
公开(公告)日：1992-08-17
申请号：JP20646391
申请日：1991-07-23
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B22D17/22 , B29C45/17 , B29C45/26 , B29C45/27
摘要： PURPOSE: To obtain a spacer member having a combination of strength, resilience and reduced thermal conductivity. CONSTITUTION: An insulating and resilient space member 10 to be mounted between a heated manifold 18 and a cooled clamp plate 36 in an injection molding system. The space member 10 has a plurality of V-shaped concentric rings 80. It has a uniform cross section with a number of web portions 84 extending diagonally between alternate forward and rearward ridge portions 86, 88. The outer surfaces of the alternate ridge portions are aligned to provide forward and rearward sides 92, 94 of the spacer member which extend a predetermined distance apart. Some of the outer surfaces have an inwardly extending insulative circular groove 98.

10. 发明专利

JPH02261615A HIGH TEMPERATURE NOZZLE FOR INJECTION MOLDING 失效
公开(公告)号：JPH02261615A
公开(公告)日：1990-10-24
申请号：JP19124289
申请日：1989-07-24
申请人： GELLERT JOBST U
发明人： JIYOBUSUTO ARURITSUCHI JIERAAT
IPC分类号： B29C45/20 , B29C45/26 , B29C45/27
摘要： PURPOSE: To obtain a nozzle for distributing heat transfer in accordance with a desired profile by forming an inner surface of a heating plate and an outer surface of a central portion which defines at least a thermal insulating air gap so as to transmit therethrough a heat flow from the heating plate to a nozzle in accordance with the specific profile. CONSTITUTION: Each slab type heating plate 60 casted of a copper alloy has a heating element 82 extending from a terminal element 82 and being electrically insulated. Each heater 60 has machined grooves 86 on a flat inner edge. When the heater 60 is fixed to one of the flat surfaces 62 of nozzles 10 with bolts extending through holes 92, thermal insulating air gaps 94 are formed between the inner surface 88 of the heater and the outer surface 62 of the nozzle by the grooves 86. In the embodiment, great thermal loss around a rear edge 96 and a front edge 98 of the nozzle causes those regions to require only smaller amount of heat than needed so that the grooves 86 have the deepest portions in the middle of the heater 60. However, the grooves permit thermal transfer to occur in the nozzle 10 along a central hole 36 and in accordance with a specific profile according to the shape and application of the device, thereby being formed in various sizes, shapes, and patterns.

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