Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 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 2019
Subject Code: 2182311 Date: 29/11/2019
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 : Split Mould, Undercut, finger cam 03
(b) Fill in the blanks:
1. To open a LHT, we should turn it ___________
2. Heat Pipes work on the Principle of __________
3. Material of Guide Pin is ________________
4. Material of O ring is _________________
04
(c) For the product shown in fig[a], design a fully automatic
injection machine mould. Show calculations of feed
system and mention about ejection system.
07
Q.2 (a) Write about types of undercuts giving examples. 03
(b) What is the difference between finger cam and Dog leg
Cam.
04
(c) For the product shown in fig[a] , draw a fully automatic
injection mould using calculations done . use graph paper.
07
OR
(c) Write a C program for Shot Capacity. 07
Q.3 (a) Draw Z circuit for cooling of integer cavity plates. 03
(b) Determine the Pitch and Pitch circle diameter for the
interconnecting groove design , given the following
information:
Diameter of Insert, D = 35mm
Gap between inlet and outlet grooves, X=4mm
No.of impressions:12
Depth of groove , m=3.5mm
04
(c) Discuss in detail, stripper plate ejection highlighting
actuation methods.
07
OR
Q.3 (a) Discuss cooling of shallow Cores. Show with a drawing 03
(b) Discuss about Heat Pipes. 04
(c) Discuss in detail, cooling methods for DEEP Cores. 07
Q.4 (a) What is projected area? 03
(b) Discuss about stripping core design for threaded
components.
04
(c) Discuss with diagrams, auto actuation methods of rotating
and withdrawing cores for unscrewing moulds.
07
OR
Q.4 (a) Discuss Heat Rods. 03
(b) Write C program for cooling period of cycle 04
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VIII (New) EXAMINATION ? WINTER 2019
Subject Code: 2182311 Date: 29/11/2019
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 : Split Mould, Undercut, finger cam 03
(b) Fill in the blanks:
1. To open a LHT, we should turn it ___________
2. Heat Pipes work on the Principle of __________
3. Material of Guide Pin is ________________
4. Material of O ring is _________________
04
(c) For the product shown in fig[a], design a fully automatic
injection machine mould. Show calculations of feed
system and mention about ejection system.
07
Q.2 (a) Write about types of undercuts giving examples. 03
(b) What is the difference between finger cam and Dog leg
Cam.
04
(c) For the product shown in fig[a] , draw a fully automatic
injection mould using calculations done . use graph paper.
07
OR
(c) Write a C program for Shot Capacity. 07
Q.3 (a) Draw Z circuit for cooling of integer cavity plates. 03
(b) Determine the Pitch and Pitch circle diameter for the
interconnecting groove design , given the following
information:
Diameter of Insert, D = 35mm
Gap between inlet and outlet grooves, X=4mm
No.of impressions:12
Depth of groove , m=3.5mm
04
(c) Discuss in detail, stripper plate ejection highlighting
actuation methods.
07
OR
Q.3 (a) Discuss cooling of shallow Cores. Show with a drawing 03
(b) Discuss about Heat Pipes. 04
(c) Discuss in detail, cooling methods for DEEP Cores. 07
Q.4 (a) What is projected area? 03
(b) Discuss about stripping core design for threaded
components.
04
(c) Discuss with diagrams, auto actuation methods of rotating
and withdrawing cores for unscrewing moulds.
07
OR
Q.4 (a) Discuss Heat Rods. 03
(b) Write C program for cooling period of cycle 04
2
(c) Discuss actuation methods for Split moulds. 07
Q.5 (a) Discuss Air Ejection. 03
(b) Discuss about Sprue Pullers 04
(c) For the product shown in fig[b], draw cooling for both
Core and Cavity.
07
OR
Q.5 (a) Discuss about cooling of multi impression moulds 03
(b) Tick the correct one:
1. For cooling cores of Deep products like buckets,
best cooling is achieved from [a] Baffle Cooling
[b] Helical Channel Cooling [c] Bubbler cooling
[d] None of these
2. For nylon 6 product having 1.5mm thread depth,
which mould can be used?
[a] stripping mould
[b] unscrewing moulds with fixed core
[c] unscrewing mould with core withdrawl
[d] none of these.
3. Cavity cooling for multiimpression moulds
Requires [a] u circuit [b] Z circuit [c] balanced Z
circuit [d] none of these
4. For PVC, The gate that cannot be used is [a] Pin
Ejection [b] Rectangular edge gate [c] Submarine Gate [d]
All of these
04
(c) Discuss in detail, about Collapsible Cores. 07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VIII (New) EXAMINATION ? WINTER 2019
Subject Code: 2182311 Date: 29/11/2019
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 : Split Mould, Undercut, finger cam 03
(b) Fill in the blanks:
1. To open a LHT, we should turn it ___________
2. Heat Pipes work on the Principle of __________
3. Material of Guide Pin is ________________
4. Material of O ring is _________________
04
(c) For the product shown in fig[a], design a fully automatic
injection machine mould. Show calculations of feed
system and mention about ejection system.
07
Q.2 (a) Write about types of undercuts giving examples. 03
(b) What is the difference between finger cam and Dog leg
Cam.
04
(c) For the product shown in fig[a] , draw a fully automatic
injection mould using calculations done . use graph paper.
07
OR
(c) Write a C program for Shot Capacity. 07
Q.3 (a) Draw Z circuit for cooling of integer cavity plates. 03
(b) Determine the Pitch and Pitch circle diameter for the
interconnecting groove design , given the following
information:
Diameter of Insert, D = 35mm
Gap between inlet and outlet grooves, X=4mm
No.of impressions:12
Depth of groove , m=3.5mm
04
(c) Discuss in detail, stripper plate ejection highlighting
actuation methods.
07
OR
Q.3 (a) Discuss cooling of shallow Cores. Show with a drawing 03
(b) Discuss about Heat Pipes. 04
(c) Discuss in detail, cooling methods for DEEP Cores. 07
Q.4 (a) What is projected area? 03
(b) Discuss about stripping core design for threaded
components.
04
(c) Discuss with diagrams, auto actuation methods of rotating
and withdrawing cores for unscrewing moulds.
07
OR
Q.4 (a) Discuss Heat Rods. 03
(b) Write C program for cooling period of cycle 04
2
(c) Discuss actuation methods for Split moulds. 07
Q.5 (a) Discuss Air Ejection. 03
(b) Discuss about Sprue Pullers 04
(c) For the product shown in fig[b], draw cooling for both
Core and Cavity.
07
OR
Q.5 (a) Discuss about cooling of multi impression moulds 03
(b) Tick the correct one:
1. For cooling cores of Deep products like buckets,
best cooling is achieved from [a] Baffle Cooling
[b] Helical Channel Cooling [c] Bubbler cooling
[d] None of these
2. For nylon 6 product having 1.5mm thread depth,
which mould can be used?
[a] stripping mould
[b] unscrewing moulds with fixed core
[c] unscrewing mould with core withdrawl
[d] none of these.
3. Cavity cooling for multiimpression moulds
Requires [a] u circuit [b] Z circuit [c] balanced Z
circuit [d] none of these
4. For PVC, The gate that cannot be used is [a] Pin
Ejection [b] Rectangular edge gate [c] Submarine Gate [d]
All of these
04
(c) Discuss in detail, about Collapsible Cores. 07
3
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This post was last modified on 20 February 2020