Section 7 Design of Folding Carton Size
First, size design truck (train) compartment (inside) → (outside) container (inside) → (outside) tray (inside) → (outside) shipping cartons (inside) → (outside) sales cartons (inside) → (outside )
Contents
Second, the size of the folding carton box design
1. Calculation formula for calculating outer dimensions and outer dimensions of outer dimensions
The outer dimensions of the folding carton are related to the size of the corrugated box and the arrangement of the box type.
X0 = [Td(nx -1)-K]/nx
In the type X0 - folding carton size (mm)
T——Dimensions in Corrugated Box (mm)
d - folding carton clearance coefficient (mm)
Nx - number of folding cartons
K——Outer dimension correction coefficient (mm)
2 Manufacturing Formula and Inner Dimension Calculation Formula Simple relation between outer dimensions, manufacturing dimensions and inner dimensions Figure 2-108
X=X0 - (t+k)
Xi =X0 -(t+k')
=X0 -(2t+k+k')
Where X - manufacturing size (mm)
Xi——inner size (mm)
X0 - outside size (mm)
t - board thickness (mm)
k - manufacturing size correction factor (mm)
k'——The inner dimension correction coefficient (mm)
Through analysis, any kind of complicated box type can be decomposed into several box boards. The relationship between the two ends of any box board and the adjacent box board has the following types:
a. U type
b. Complex U type
c. L type
d. Complex L type
e. Type S
f. Double L type
g. b Type 1 In the tubular folding carton structure shown in the figure, the outer size is 50×20×20(mm), the thickness of the cardboard is
1mm, the correction factor is 0, find the manufacturing size and the inner size.
Solution: Number each box from right to left (from outside to inside) (1) Because the panels 1, 8 are of double L type, so
B1 =b0-(n-1/2)tk
=20-(2-1/2)×1=18.5(mm)
B8 = 20-(3-1/2) × 1 = 17.5 (mm)
(2) Because the cassettes 2, 3, 4, and 7 are of complex U type, so:
2 0 ( 1) LL ntk = ? ?
L2 = L0 - (n-1)tk
= 50-(2-1) × 1 = 49 (mm)
B3 = 20-(2-1) × 1 = 49 (mm)
L4 = 50-(3-1) × 1 = 48 (mm)
L6 = 50-(5-1) × 1 = 46 (mm)
(3) Since the cartridge plates 5, 6 constitute a double "L" type, therefore:
B5 = B0 -nt-k
=20-2×1=18(mm)
B6=20-3×1=17(mm)
D=(0+1)×1=1(mm)
(4) Height direction:
H1=H0-(n-1)tk
= 200-2 (2-1) × 1 = 199 (mm)
H2=200-(4-1)×1=197(mm)
H3 = Hi = Ho-nt-k'
=200-4×1=196(mm)
(5) Long and wide inner dimensions
Li=L0 -nt-k'
=50-5×1=45 (mm)
Bi=B0-nt-k'
=20-3×1=17 (mm)
Example 2 The tray folding carton structure is shown in the figure, the outer size is 250×150×50(mm), and the thickness of the cardboard is
1 (mm), the correction factor is 0, find the manufacturing size and the inner size.
Solution: (1) On the LH section, the box plates 1, 2, and 3 are complex U-shaped structures, so:
L1=250-(2-1)×1=249(mm)
L2 = 250-(6-1) × 1 = 245 (mm)
L3 = 250-(8-1) × 1 = 243 (mm)
Li= 250-10×1=240(mm)
(2) The box plates 4 and 5 have a complex b-shaped structure, so:
H4 = 50-1 × 1 = 49 (mm)
H5= 50-3/2×1(mm)
Hi=H5=48.5(mm)
D4= (3+1)×1=4 (mm)
(3) On the BH section, the box board 1 is U-shaped.
B1 = 150-1 = 149 (mm)
B4 = B1 = 149 (mm)
B5 =Bi= 150-4×146(mm)
D2=(0+1)×1=1(mm)
The dimensions of each part are shown in Figure 1-6 and the inner dimensions are 240 x 146 x 48.5 (mm).
2. The formula for the calculation of the inner dimensions and the inner dimensions of the outer dimensions is as follows:
Xi=Xmax nx+d(nx -1+k')
In the formula Xi - folding carton size (mm)
Xmax - maximum external dimensions of the contents (mm)
Nx - the number of items in a certain direction
d—The maximum external dimension of the contents (mm)
k'——the clearance coefficient of the content (mm)
For the folding carton, the k' value generally takes 3 - 5 mm in the length and width directions, and the k' value in the height direction generally takes 1-3 mm.
The k' value mainly depends on the degree of deformation of the product.
If the contents are single
Xi =Xmax +k'
2 manufacturing size calculation formula 3 outer size calculation formula
X0=X+t+K
Third, cover the size of the cover of the cover box Cover cover box in the folding carton box box cover is two separate parts, the formula is as follows:
X=Xi +(n-1)t+K
X0=X+t
= Xi+nt+k
=Xi+nt+k
X=X0 + (m-1)t+α
=Xi +(m+n-1)t+k+α
X0 = Xi + (m+n)t+k+α
In the formula Xi - cover box body size (mm)
X——Manufactured size of box (mm)
0 X - outside the box size (mm)
X+——Manufacture of cover (mm)
X0+——Outer Cover Size (mm)
n - the number of cardboard boxes in the box;
m - the number of lid cardboard layers;
T——board thickness (mm)
k - box manufacturing size correction coefficient (mm)
α - box cover manufacturing size correction factor (mm).