JPH04137181A - Determination system for size of parts and its fitting hole - Google Patents

Abstract

PURPOSE:To eliminate the size misselection of parts and hole by calculating information on registered molded goods and plate parts by a calculating means and automatically selecting the size of a standard goods. CONSTITUTION:When a metallic mold is designed, a metallic mold designer determines the size of a plate according to the size of the metallic mold. Then the name and fitting position of a fitted component are indicated. Consequently, the component and a calculation expression which are stored in a storage device 11 are read by a read means 4 and the calculating means 3 which uses an arithmetic unit 12 operates to automatically select the best parts among standard goods. Data on the parts fitted to the plate and data on the bored hole are stored on the storage device 11 by a storage means 2. When the design is altered, the metallic mold designer alters the information on the plate and molded goods. At this time, the calculating means 3 which uses the arithmetic unit 12 operates to automatically alter the component and hole information and the altered information on the parts and hole is stored on the storage device 11 by the storage means 2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for determining the size of parts and their mounting holes, and in particular, the size of parts and their mounting holes when designing a mold used in injection molding. Regarding the determination method.

[Conventional technology]

Injection molding uses an injection molding machine to heat and plasticize plastic pellets, and then molds the product inside a closed mold with a concave female cavity and a convex male core. Gap formed between & three injections. The injected plastic is cooled and solidified within the mold, and then removed as a molded product by opening the mold.

As shown in Fig. 9, the mold consists of a first plate P1, which is a fixed side mounting plate that serves as a collar for attaching the mold to a fixed guide plate (not shown) of an injection molding machine, and a cavity. a second plate) P2, a third plate P3 that is a core mounting plate that holds the core 6, and a fourth plate P4 that is a block-shaped spacer for creating a space for providing a protrusion mechanism for the molded product. An ejector bin (hereinafter referred to as EP) 7 that projects and removes the molded product 8 from the core 6 when the plate P2 and plate P3 are opened (hereinafter referred to as mold opening), and an ejector bin holding plate that holds the EP7. a fifth plate P5, which supports EP7 and plate P5, and a sixth plate P6, which is an extrusion receiving plate that supports EP7 and plate P5 and is extruded by an ejection mechanism (not shown) of the injection molding machine when the mold is opened; and a seventh plate P7 which is a movable side mounting plate which also serves as a contact plate and a collar for attaching a mold to a fixed die plate of an injection molding machine.

In addition, although not shown in the drawings, there is also a tongue plate P1 for centering the mold when installing it in the injection molding machine.
The locate ring provided in
A return bin for returning P5 and EP7 to their predetermined positions,
It is composed of guide bins and the like that guide the plates P2 and P3.

In the conventional method for determining the size of parts and their mounting holes, when installing a part or changing the size, a mold designer determines the mold based on the size information of the plates P1 to P7 and the molded product 8 that form the mold. The size of the hole to be used when installing the EP7 by passing through the components such as the EP7 and the guide bin and the plate P3 was calculated, and the results were compared with the component sizes of commercially available standard products.

[Problem to be solved by the invention]

In the conventional method for determining the sizes of parts and their mounting holes, as described above, the designer recalculated and compared the sizes with standard products, which resulted in errors and omissions in the sizes of parts and holes. There is.

Another problem is that the diagrams of changed parts and holes must be redrawn.

The purpose of the present invention is to eliminate the time-consuming work of calculating the sizes of parts and holes, eliminate errors in the size and selection of parts and holes, and eliminate the work of redrawing diagrams of changed parts and holes. The objective is to provide a method for determining the size of parts and their mounting holes.

[Means to solve the problem]

The automatic determination method of the size of a component and its mounting hole of the present invention corresponds to the size information and parameter information of the component and the mounting of the component, and corresponds the parameter to a calculation formula for calculating the size of the component. a correspondence means, a storage means for storing information matched by the correspondence means in a storage device, a calculation means for calculating information in the storage means with an arithmetic device, and reading data from the storage device into the calculation means. It is configured to include a reading means and a display means for displaying the information and calculation results on a display device.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. In this embodiment, the mounting of the plate and the parts and parts is handled by corresponding means 1, which corresponds the hole size information and parameter information, and corresponds the parameters with the calculation formula for calculating the size of the parts. storage means 2 for storing the information stored in the storage device 11; calculation means 3 for calculating the information in the storage means 2 with the calculation device 12; reading means 4 for reading data from the storage device 211 into the calculation means 3; It is comprised of a display means 5 for displaying information and calculation results on a display device 13.

Fig. 2 is a side view showing the basic mold structure and corresponding parameters of the same example, and Fig. 3 is a side view showing the basic mold structure and corresponding parameters of the same example. FIG. 4, which is a diagram showing reserved words, is an explanatory diagram consisting of a top view and a side view showing the shape and size of the plate and corresponding parameters. Plate number P1 of plates P1 to P7 in Figure 2
-P7 corresponds to P1 to P7 in FIG. 3(a), and the ten parameters of sizes A to J correspond to A to J shown in FIG. 4. Depending on the shape of the plate,
There are also unnecessary parameters.

Plate gap size #G1 shown in third [N(b),
#G2 is the dimension of the gap between the plates, and the user-defined reserved words #uO to #uJ can be freely assigned meanings by the designer. For example, the user definer synonyms #U0 to #uJ can be used as a parameter to set the height of the core 6.
It can be used when calculating the length of 7. Note that the order of user-defined reserved words #uO to #uJ is #u9, followed by #u.
It is A.

FIG. 5 is a diagram showing parameters and sizes for determining the shapes and shapes of holes for parts and mounting used in the same embodiment, and calculation formulas defined using the reserved words shown in FIG. 3.

FIG. 5(a) is a side view showing the shape and parameters of the EP7, and FIG. 5(c) is a diagram showing the correspondence between the size and parameters of the EP7. The total length L1 is the length of EP7, the contact height L2 is the height of the contact part with plate P5, the contact part diameter D1 is the diameter of the contact part, and the diameter D2 is the diameter of the tip that contacts the molded product 8. .

FIG. 5(b) is a sectional view showing the mounting hole of EP7 drilled in the mold. Hole 9a represents a hole in plate P5 in FIG. 2, and hole 9b represents a hole in plate P3.

Figure 5(d) shows the calculation formula for calculating the length of EP7 in the third form.
This is a diagram defined using the reserved words shown in the figure, and the last number (-20> indicates the distance between the bottom of the hole 9a and the bottom of P5. Figure 5(e) shows the installation of EP7. is a diagram showing the correspondence between the hole size and the parameters using the reserved words shown in Fig. 3 and the parameters shown in Fig. 5 (a), where the number (+1) after the parameter indicates the room for sliding. Note that the numerical unit of size is mm.

Figure 6 is a sectional view of the first embodiment in which the parts E and P7 registered in Figure 5 are attached to the mold, and Figure 7 is
It is a sectional view of a second example in which P7 is attached to a mold in which the size of plate P3 is changed.

Figure 8 shows that after all parts and hole sizes have been determined, the third
FIG. 6 is a cross-sectional view showing changes when the thickness of the plate P3 shown in the figure is changed. Figure 8(a) is before the change, Figure 8(b)
8(c) shows the plate P3 being changed while FIG. 8(c) shows the plate P3 after the change.

Next, the operation of this embodiment will be explained. The mold designer uses response method 1 in advance to determine the size variables of parts such as guide bins and eject bins, and hole sizes, which are determined from the plate size information and molded product size information shown in Figures 2 to 5. A calculation formula for determining the name definition and the size created for each component is created, and the name is assigned and stored in the storage device 11 by the storage means 2 (step Sl).

When designing a mold, the mold designer performs an operation to determine the size of the plate from the size of the molded product 8 (step S2). By performing this operation, the corresponding means 1 determines the value corresponding to the variable name of the calculation formula used for the component size. In the same embodiment, in the first embodiment shown in FIG. size#
G2 = 50 mm, the user-defined reserved word #uO is the height of the core 6 #uO = 50 mm, and in the second embodiment shown in FIG. Thickness #T O5 = 50 mm.

The plate gap size #G2 between the plate P3 and the plate 25 is 80 mm, and the height of the core 6 #uO is 50 mm.

Next, the mold designer instructs the names and positions of the parts to be attached to the plates P1 to P7 (step S3). As a result, the parts and calculation formulas stored in the storage device 11 are read by the reading means 4, and the calculation means 3 using the arithmetic unit 1f12 operates to automatically select the optimal parts from the standard products.

In the first embodiment shown in FIG. 6, the total length L of the component EP7 is
When 1 is attached to the mold, the calculation formula works and the diameter is 220 mm.
(LL-#TO3+#TO5+#G2+#uO-20=
110+30+5.0+5020). Therefore, from Figure 5, the part size name EP that fits the total length L1 = 220 mm
-15 is determined, and the height of the contact part L 2 = 5 mm
, contact part diameter D115 mm, diameter D 2 = 6
m m is also determined. When part EP7 is attached to the mold, the diameter of the hole 9a is 16 mm (D 1 + 1 =
15 + 1), depth is 6mm (L2+1=5+
1), the diameter of hole 9b is 7 mm (D2+1=6+1),
The depth is determined to be 110mm (#TO3110). Further, in the second embodiment shown in FIG. 7, when the same part EP7 is attached to the mold 2, the total length L1 becomes 300 mm. Accordingly, from FIG. 5, the part size name EP=:30 that matches the total length L1=300 mm is determined, and the contact part height L2=10 mm, contact part diameter DI=30 mm, and diameter D2=12 mm are determined for each size of the part. At the same time, the size of the attached hole was decided, and the diameter of hole 9a was 31mm, the depth was 11mm,
The diameter of hole 9b is 13 mm.

The depth will be 140mm.

The data of the parts attached to the plates P1 to P7 and the data of the holes drilled are stored in the storage device 11 by the storage means 2.
1 (step S4).

When a design change occurs, the mold designer performs an operation to change the information of the plate and molded product. As a result, plates P1~
The reading means 4 automatically reads the data of the parts attached to P7 and the data of the holes from the storage device 11 (step S5). At this time, the calculation means 3 using the calculation device 12 operates to automatically change the parts and hole information, and the changed parts and hole information is stored in the storage device 11 by the storage means 2 (step S6). .

Fig. 8(b) shows the thickness #T03 of plate P3 from 110 mm to 140 m from Fig. 8(a) in the same state as Fig. 6.
This shows the state changed to m. In this state, only the size information of the plates P1 to P7 is changed, and the sizes of the parts and holes are not likely to be changed.
The hole information is automatically changed and the calculation formula is recalculated.

As shown in FIG. 8(c), the total length L1 of EP7 is 250
mm, and the size name of the parts installed before the change was also changed from EP-15 to EP-20, and each size of the parts was changed to: contact height L 2 = 5 m rn , contact diameter D l = 20 m m , diameter D 2 = 8 m
changed to m. Therefore, the attached hole size is also hole 9a.
The diameter of hole 9b is 21mm, the depth is 6mm, and the diameter of hole 9b is 9mm.
mm, the depth is changed to 140 mm.

Automatic determination of component hole information in step S4 and step S
The result of the automatic change of parts and holes in step 6 is displayed on the display device 13 by the visual display means 5 and notified to the mold designer. Furthermore, since the information on the parts and holes determined in step S4 and step S6 is stored in the memory bag W11, it is also used in the parts display output (step S7) and the power output of the plates P1 to P7 (step S8). It can be used.

In addition, in this example, the part size is automatically determined using one calculation formula and the optimal part is automatically selected in the mold design, but multiple calculation formulas are also used to select the optimal part that meets each condition. It is also possible to select parts.

Further, in the same embodiment, one component is attached to only one location, but it is possible to change the attachment of multiple components at once by using the above processing procedure.

〔Effect of the invention〕

As explained above, the present invention eliminates the trouble of calculating the sizes of parts and holes by calculating information on registered molded products, plates, and parts using a calculation means and automatically selecting the size of the standard product. This has the effect of eliminating such work and eliminating mistakes in the size and selection of parts and holes.

Additionally, it has the effect of eliminating the need to redraw diagrams of changed parts and holes.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of one embodiment of the present invention, Fig. 2 is a side view showing the basic mold structure and corresponding parameters of the same embodiment, and Fig. 3 is the plate and molded product of Fig. 2. FIG. 4 is an explanatory diagram consisting of a top view and a side view showing the shape and size of the plate and the corresponding parameters; FIG. 6 is a diagram showing the parameters and sizes for determining the shape and shape of the hole and the calculation formula defined using the reserved words shown in FIG. 3, and FIG. Figure 7 is a cross-sectional view of the first embodiment in which the registered part EP7 is attached to the mold at point 1. Figure 7 is a cross-sectional view of the second embodiment in which EP7 is attached at point 2 to the die in which the size of the plate P3 is changed. The cross-sectional view, Figure 8, shows the parts.
FIG. 9 is a cross-sectional view showing the structure of a conventional mold. 1... Corresponding means, 2... Storage means, 3
...Calculation means, 4...Reading means, 5
・−・・・−Display means, 6... Core, 7...
...EP, 8... Molded product, 9a. 9b... Hole, 11...- Storage device, 12
・-・・・- Arithmetic device, 13... Display device, A
~J...Size, P1-P7...Plate, #G1. #G2...Plate gap size, #uO~#uJ...User-defined reserved word,
Ll...Full length, L2...Contact height,
Dl...Contact part diameter, D2...Diameter,
#T03... Thickness of plate P3, #TO5.
....-thickness of plate P5, #uO...--height of core, Kl, 2...mold. Agent Patent Attorney Susumu Uchihara ((1> (b) 尤)

Claims (1)

[Claims] Corresponding means for correlating size information of a component and a mounting hole of the component with parameter information, and correlating the parameter with a calculation formula for calculating the size of the component, and storing in a storage device the information made correspondent by the corresponding means. a calculation means for calculating information in the storage means with an arithmetic device; a reading means for reading data from the storage device into the calculation means; and a display means for displaying the information and calculation results on a display device. A method for determining the size of a component and its mounting hole, comprising: