Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2182311 Advanced Plastic Mould Design Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2182311 Date: 29/11/2018
Subject Name: Advanced Plastic Mould Design
Time: 02:30 PM TO 05:00 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 : Ejection system ; Split moulds, Baffle 03
(b) Discuss Sleeve ejection with diagram 04
(c) Design a fully automatic injection mould for the product shown in
fig[a]
07
Q.2 (a) Discuss finger cam actuation with sketch 03
(b) Determine the pitch and the pitch circle diameter for the
interconnecting groove design , given the following information:
Diameter of insert : 35mm ; Gap between inlet and outlet grooves :
5mm ; number of impressions : 24 ; depth of groove : 5mm.
04
(c) Discuss various transmission systems for unscrewing moulds with
sketches
07
OR
(c) Discuss cooling of deep cores with neat diagrams 07
Q.3 (a) What is register ring? Discuss 03
(b) Discuss Heat Rods 04
(c) For the product shown in fig[a], draw a fully automatic injection
machine mould. Use graph paper
07
OR
Q.3 (a) What is the function of Lathe machine in a mould making shop ?
Discuss
03
(b) Write a C Program for Shot Capacity 04
(c) Discuss stripper plate ejection in detail with diagrams 07
Q.4 (a) Fill in the blanks:
1. Material of ?O? ring is ________________
2. Function of locking heel is ________________________
3. Undercut is defined as __________________
03
(b) Write a C program for Plasticizing Capacity 04
(c) Discuss in detail about collapsible Cores 07
OR
Q.4 (a) Draw cooling channel layouts for product shown in fig.[a] 03
(b) Discuss cooling of shallow inserts 04
(c) Discuss Core withdrawal system using Rack & Pinion 07
Q.5 (a) What is a wear plate? Discuss 03
(b) Write a C program for cooling period of Cycle 04
(c) Discuss multilevel cooling for integer cavities 07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2182311 Date: 29/11/2018
Subject Name: Advanced Plastic Mould Design
Time: 02:30 PM TO 05:00 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 : Ejection system ; Split moulds, Baffle 03
(b) Discuss Sleeve ejection with diagram 04
(c) Design a fully automatic injection mould for the product shown in
fig[a]
07
Q.2 (a) Discuss finger cam actuation with sketch 03
(b) Determine the pitch and the pitch circle diameter for the
interconnecting groove design , given the following information:
Diameter of insert : 35mm ; Gap between inlet and outlet grooves :
5mm ; number of impressions : 24 ; depth of groove : 5mm.
04
(c) Discuss various transmission systems for unscrewing moulds with
sketches
07
OR
(c) Discuss cooling of deep cores with neat diagrams 07
Q.3 (a) What is register ring? Discuss 03
(b) Discuss Heat Rods 04
(c) For the product shown in fig[a], draw a fully automatic injection
machine mould. Use graph paper
07
OR
Q.3 (a) What is the function of Lathe machine in a mould making shop ?
Discuss
03
(b) Write a C Program for Shot Capacity 04
(c) Discuss stripper plate ejection in detail with diagrams 07
Q.4 (a) Fill in the blanks:
1. Material of ?O? ring is ________________
2. Function of locking heel is ________________________
3. Undercut is defined as __________________
03
(b) Write a C program for Plasticizing Capacity 04
(c) Discuss in detail about collapsible Cores 07
OR
Q.4 (a) Draw cooling channel layouts for product shown in fig.[a] 03
(b) Discuss cooling of shallow inserts 04
(c) Discuss Core withdrawal system using Rack & Pinion 07
Q.5 (a) What is a wear plate? Discuss 03
(b) Write a C program for cooling period of Cycle 04
(c) Discuss multilevel cooling for integer cavities 07
2
OR
Q.5 (a) What are water ways? 03
(b) A product of weight 30 gms is to be moulded in PP in an injection
moulding machine. If a 20 impression mould is desired, work out
the shot capacity of the injection machine. Consider: Bulk factor of
PS = 1.4
Bulk factor of PP = 1.9
Specific gravity of PS= 1.04
Specific gravity of PP = 0.9
04
(c) Discuss in detail about Heat Pipes 07
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This post was last modified on 20 February 2020