Download GTU BE/B.Tech 2017 Winter 8th Sem New 2182307 Advanced Plastic Mould Design Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 8th Sem New 2182307 Advanced Plastic Mould Design Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2182307 Date: 07/11/2017

Subject Name: Advanced Plastic Mould Design

Time:02:30 PM TO 05:30 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Define Split mould. Why do we use split moulds? 03
(b) Discuss cooling of shallow inserts 04
(c) Design a fully automatic injection mould for the product
shown in fig[a]
07

Q.2 (a) Define : waterways, locking heel, O ring 03
(b) Discuss stripping of internal threads design 04
(c) Determine the pitch and the pitch circle diameter for the
interconnecting groove design , given the following
information: Diameter of insert : 30mm ; Gap between
inlet and outlet grooves : 4mm ; number of impressions :
14 ; depth of groove : 5mm.
07
OR
(c) For the product shown in fig[a], draw a fully automatic
injection machine mould. Use graph paper
07
Q.3 (a) Fill in the blanks:
a. ___________core cooling is preferred if we have
deep cores.
b. Sprue puller is preferred for nylons
c. Material of O ring is ____________
03
(b) Write C program for shot capacity 04
(c) Discuss various transmission systems for unscrewing
moulds with sketches
07
OR
Q.3 (a) What is shrinkage? Why should mould be designed
considering shrinkage?
03
(b) Write a C program for cooling period of Cycle 04
(c) What is a sprue puller? Discuss various types with
applications
07
Q.4 (a) Write MOC for split cavity , O ring, locking heel 03
(b) Write C program for no.of impressions 04
(c) Discuss Heat Pipes 07
OR
Q.4 (a) Differentiate between finger cam and dog leg cam for
Split moulds
03
(b) Where do we use a angled lift split mould? 04
(c) Discuss in detail about cooling of DEEP cores 07
Q.5 (a) Core withdrawal systems using hydraulics 03
(b) Discuss Core withdrawal system using Rack & Pinion 04
(c) Discuss in detail about Heat Pipes 07
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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2182307 Date: 07/11/2017

Subject Name: Advanced Plastic Mould Design

Time:02:30 PM TO 05:30 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Define Split mould. Why do we use split moulds? 03
(b) Discuss cooling of shallow inserts 04
(c) Design a fully automatic injection mould for the product
shown in fig[a]
07

Q.2 (a) Define : waterways, locking heel, O ring 03
(b) Discuss stripping of internal threads design 04
(c) Determine the pitch and the pitch circle diameter for the
interconnecting groove design , given the following
information: Diameter of insert : 30mm ; Gap between
inlet and outlet grooves : 4mm ; number of impressions :
14 ; depth of groove : 5mm.
07
OR
(c) For the product shown in fig[a], draw a fully automatic
injection machine mould. Use graph paper
07
Q.3 (a) Fill in the blanks:
a. ___________core cooling is preferred if we have
deep cores.
b. Sprue puller is preferred for nylons
c. Material of O ring is ____________
03
(b) Write C program for shot capacity 04
(c) Discuss various transmission systems for unscrewing
moulds with sketches
07
OR
Q.3 (a) What is shrinkage? Why should mould be designed
considering shrinkage?
03
(b) Write a C program for cooling period of Cycle 04
(c) What is a sprue puller? Discuss various types with
applications
07
Q.4 (a) Write MOC for split cavity , O ring, locking heel 03
(b) Write C program for no.of impressions 04
(c) Discuss Heat Pipes 07
OR
Q.4 (a) Differentiate between finger cam and dog leg cam for
Split moulds
03
(b) Where do we use a angled lift split mould? 04
(c) Discuss in detail about cooling of DEEP cores 07
Q.5 (a) Core withdrawal systems using hydraulics 03
(b) Discuss Core withdrawal system using Rack & Pinion 04
(c) Discuss in detail about Heat Pipes 07
2
OR

Q.5 (a) Draw cooling layout for cavity in case of round caps , 8
impression mould.
03
(b) Discuss in detail Collapsible cores 04
(c) List various methods of actuation of Split mould and
discuss any one in detail
07

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