KR101503756B1 - Automatic modeling method of a injection die - Google Patents

Abstract

The present invention provides an injection mold automatic modeling method. The injection mold automatic modeling method of the present invention includes a step of modeling an injection product. And obtaining a mold clamping force through the modeling shape of the article. And a step of obtaining the mold base plate material region according to the mold clamping force, the size of the modeled article, the mold type, and the mold base type. Determining a return pin region and a return spring specification in accordance with the thickness of the lower plate of the mold base plate material and the weight of the plate. And determining the guide pin diameter and position in accordance with the width and the vertical width of the mold original plate. And obtaining the area and size of the mold base plate assembly bolt in accordance with the mold type. And aligning the area of the mold base assembly bolt with the alignment pin area and the size. And determining the position and size of the mold opening preventing member and the fixing bolt in accordance with the weight of the movable-side mold base plate member and the fixed-side mold base plate member. And locating the locate ring region.

Description

[0001] The present invention relates to an automatic modeling method of an injection mold part,

The present invention relates to an injection mold automatic modeling method, and more particularly, to an injection mold automatic modeling method capable of automatically modeling an injection mold.

Injection molding is a method of manufacturing a product having a predetermined shape and dimensions in a cavity of an injection mold by supplying a molten molding material, for example, a thermoplastic resin, from a nozzle of an injection molding machine.

The injection mold includes a mold base plate member and a mold part coupled to the mold base plate member to couple between the mold base plate members and to take out a finished product.

The mold base may be divided into a two-end mold type, a three-end mold type, a special mold type, and a hot runner type depending on the type, and includes a mold base plate material and parts mounted in the mold base plate material.

The mold base plates are determined according to the mold base type. Examples of the mold base plate materials include an upper and a lower mold base plate, an upper and a lower fixing plate, a slide core, a plate, a plate leg, a spacer plate, and a holding plate formed to form a cavity and a core.

The mold part includes, for example, a return pin for taking out a product, a mold base assembly bolt for coupling the mold base plate material, a guide pin for guiding the coupling between the mold base plate material, a mold opening prevention piece, , A hot runner nozzle, and the like.
Conventionally, when selecting the size and thickness of the mold base plate material, it is selected by using the dynamic calculation formula, but the dynamic calculation formula is complicated and difficult, and it is manually worked by the designer's experience. Accordingly, the performance of the mold base is changed according to the capability of the designer, and the design time becomes longer.
Korean Utility Model Laid-Open No. 20-2011-0007254 describes a standard mold base, but in this case, it merely standardizes the slide core according to the form of the cash register.

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Korean Utility Model Publication No. 20-2011-0007254

An object of the present invention is to provide an automatic modeling method of an injection mold capable of automatically modeling an injection mold in accordance with the shape of the injection mold.

Therefore, the injection mold automatic modeling method according to the preferred embodiment of the present invention includes the step of modeling the injection product. And obtaining a mold clamping force through the modeling shape of the article. And a step of obtaining the mold base plate material region according to the mold clamping force, the size of the modeled article, the mold type, and the mold base type. Determining a return pin region and a return spring specification in accordance with the thickness of the lower plate of the mold base plate material and the weight of the plate. And determining the guide pin diameter and position in accordance with the width and the vertical width of the mold original plate. And obtaining the area and size of the mold base plate assembly bolt in accordance with the mold type. And aligning the area of the mold base assembly bolt with the alignment pin area and the size. And determining the position and size of the mold opening preventing member and the fixing bolt in accordance with the weight of the movable-side mold base plate member and the fixed-side mold base plate member. And locating the locate ring region.

The step of obtaining specifications of the return pin region and the return spring includes the steps of obtaining the diameter of the return pin and the diameter of the return spring based on at least one of the horizontal width and the vertical width of the flat plate, Determining an initial compression ratio; obtaining a spring constant through an initial compression ratio of the return spring; and determining a suitable return spring having a spring constant and a return spring diameter of the return spring.

The step of obtaining the diameter and position of the guide pin may include the steps of obtaining the diameter of the guide pin satisfying the diameter of the guide pin when the horizontal width of the mold base plate is L and the vertical width of the mold base plate is W, The method comprising the steps of: obtaining an area of the guide pin in conformity with a lateral width and a longitudinal width of the mold base plate; examining whether an area of the guide pin obtained is interfered with a core; And repositioning the guide pin position. In this case, the step of obtaining the area and size of the mold base plate assembly bolt in accordance with the mold type may include: a step of assembling the lower fixing plate, the plate leg, and the lower plate according to the width width length and the vertical width length of the plate leg. Determining the bolt size and the installation quantity of one assembly bolt group; Positioning the outermost bolts on both sides of the first assembly bolt group according to the diameter of the guide pin; Disposing the bolts of the first assembly bolt group at regular intervals; A second assembly bolt group for assembling between the upper fixing plate and the upper plate at a position symmetrical to the first assembly bolt group in the same size and quantity; Determining the quantity and position of bolts of the third assembly bolt group that fixes between the top plate and the plate leg according to the quantity and position of the bolts of the first assembly bolt group; And determining the size, quantity, and position of the bolts of the fourth assembly bolt group to be fastened between the plates in accordance with the lengths of the width and length of the plate.

Also, the step of obtaining the position and size of the fitting pin region may include a step of calculating a position and a size of the fitting pin region based on at least one of the first assembly bolt group and the second assembly bolt group and the position of the third assembly bolt group, . In this case, when the number of bolts of the first assembly bolt disposed on one plate leg is three and the number of bolts of the third assembly bolt group is two, the bolt is fixed to one bolt of the third assembly bolt group, Wherein the first assembly bolt group and the second assembly bolt group are disposed to face each other between the intermediate bolts of the first assembly bolt group and the intermediate bolts of the first assembly bolt group and the other bolt of the third assembly bolt group, When the number of bolts is four and the number of bolts of the third assembly bolt group is three, the fitting pins are disposed between the outermost bolts on one side of the third assembly bolt group and the outermost bolts on one side of the first assembly bolt group, The number of bolts of the first assembly bolt group arranged on one plate leg is 6, and the number of bolts of the second assembly bolt group arranged on one plate leg is 6, The number of bolts in 3 assembly bolts 4, the fitting pins are disposed between the outermost bolts on one side of the third assembly bolt group and the outermost bolts on one side of the first assembly bolt group, and between the outermost bolts on the other side of the third assembly bolt group and the first assembly And may be disposed between the outermost bolts on the other side of the bolt group.

Further, the step of obtaining the mold opening preventing member and the fixing bolt specification includes: obtaining the fixed side weight and the movable side weight based on the parting line; Determining a size of the fixing bolt based on a larger weight of the fixed side weight and the movable side weight; Determining a size of the mold opening prevention member in accordance with the size of the fixing bolt; And determining the position of the fixing bolt at a position spaced apart from the edge of the mold disc by a predetermined distance.

On the other hand, the step of selecting an ejector hole area in the house fixing plate may further include the steps of: setting a reference ejector hole area in advance; Determining whether the reference ejector hole area and the actual ejector hole area are located at the same position; And adding the position of the actual ejector hole if the position of the reference ejector hole and the actual ejector hole are not the same. In this case, when the reference ejector hole partially overlaps with the actual ejector hole, the tangent line of the reference ejector hole and the tangent line of the actual ejector hole are connected to replace the reference ejector hole and the actual ejector hole, When the reference ejector hole and the actual ejector hole have the same center, an ejector hole having a larger diameter can be selected and unified.

On the other hand, the method further comprises the step of determining an eyebolt region, wherein the step of determining the eyebolt region comprises: So that the eye bolts applied to the upper plate and the lower plate are arranged at equidistantly spaced positions at the entire center of gravity (Oc); And placing the mold base plate material except for the upper plate and the lower plate at the center of each plate material.

According to the present invention, since the mold base plate material can be automatically modeled according to the shape, the mold base can be designed quickly regardless of the proficiency of the mold designer.

1 is a view showing an example of a mold structure according to a mold type.
2 is a view showing an example of a mold structure according to a mold base type.
FIG. 3 is a flowchart illustrating each step of the injection mold automatic modeling method according to a preferred embodiment of the present invention.
FIGS. 4 to 17 are conceptual diagrams showing respective steps of an automatic mold-base plate material modeling method of an injection mold automatic modeling method according to a preferred embodiment of the present invention.
18 to 28 are diagrams showing respective steps of an automatic mold component modeling method in an injection mold modeling method according to a preferred embodiment of the present invention.

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

The injection mold automatic modeling method according to a preferred embodiment of the present invention includes a step of automatically modeling a mold base plate and a step of automatically modeling the mold part.

An automatic modeling method of a mold base plate material is a method of automatically modeling a mold base plate material for injection molding in accordance with a model of a preliminarily modeled article, a mold type, and a mold base.

The step of automatically modeling the mold parts is a step of automatically modeling various parts for fixing the modeled mold base plate materials or taking out the articles.

In this case, as shown in Fig. 1, the mold type is determined depending on the presence or absence of the inserts of the core and the cavity. The mold type is (a) core cavity insert type, (b) core insert type, ) Disk-integrated type, and the like.

As shown in FIG. 2, the mold base type is a type according to the number of the mold base plate materials, including (a) a hot runner type, (b) a two-end mold type, (c) ) And the like.

The mold type and the mold base type can be preset by the user.

FIG. 3 is a flowchart illustrating each step of the injection mold automatic modeling method according to a preferred embodiment of the present invention. As shown in FIG. 3, the injection mold automatic modeling method according to the preferred embodiment of the present invention has a step (S10) of obtaining a modeling value of a product, a mold type, and a mold base type. Mold The step of obtaining a mold clamping force (S20) through the projected area of the model article (100). (S30) of obtaining the transverse width and the vertical width of the temporary core region in proportion to the mold clamping force and the size of the article to be printed. (S40) of obtaining the thickness of the actual core region and the thickness of the mold disc region in accordance with the width of the projected area of the temporary core region and the mold type. (S50) of determining the width of the mold disc region according to the mold type, the size of the article to be printed, and the presence or absence of the slide core. And a step (S60) of determining a plate operating stroke in accordance with a height at which the article is embedded in the core or the cavity. And a step (70) of determining a plate material region other than the mold original plate in accordance with the selected mold base type. (Step 80) of determining the plate leg and the plate size to match the core size and mold base type. Accordingly, automatic modeling of the mold base plate material is completed.

Thereafter, a return pin region and a return spring specification are obtained in accordance with the thickness of the lower plate and the weight of the plate of the mold base plate (S90). And a step S100 of obtaining the diameter and position of the guide pin in accordance with the horizontal width and the vertical width of the mold main plate. (S110) of obtaining the area and size of the mold base plate assembly bolt according to the mold type. (S120) of obtaining a fitting pin area and a size in accordance with the area of the mold base assembly bolt. (130) of obtaining mold release preventing pieces and fixing bolt specifications in accordance with the weight of the movable-side mold base plate material and the fixed-side mold base plate material. A locating ring region 140 is obtained.

Hereinafter, each step will be described in detail. First, as shown in FIG. 4, the article 100 is modeled. The modeled article 100 may be a product solid and may be embodied in the form of a product. Alternatively, the modeled article of manufacture 100 may roughly represent the outer perimeter of the article. Thereafter, the origin of the WCS (Work Coordinate System) coordinate of the article of manufacture 100 can be determined and the article 100 can be positioned in the correct position. In the WCS system, the position where the upper plate and the lower plate are combined can be a plane where the Z-axis becomes zero.

Thereafter, the mold clamping force is obtained through a modeling value of the article of manufacture 100 (S20). In order to obtain the mold clamping force, first, the projected area of the top of the article 100 is obtained. In this case, the hole portion is excluded from the projection exemption. Accordingly, the gap between the optimum tie bars is determined, and the mold clamping force is determined in accordance with the interval of the tie bars.

Thereafter, a step of obtaining a core region is performed. The meaning of obtaining the core region means that the volume of the core and the position of the core are obtained. In this case, the volume of the core can be obtained by knowing the height of the core in the cross-sectional area having the horizontal width and the vertical width of the projection plane of the core observed in the top view (TOP VIEW). The core region is an optical representation. In the case of the insert type, the core region means a region including a cavity region and a core region, and means a cavity region when only a cavity is inserted.

First, the horizontal width and the vertical width of the temporary core region 20 can be obtained by adding the spacing values from the outer periphery of the article of manufacture 100 that is preset in accordance with the clamping force. Alternatively, the upper, lower, left, right, and diagonal points of the model article 100 may be selected to directly input the separation values X, -X, Y, The width L and the vertical width W can be obtained.

5 to 7, the transverse width L and the longitudinal width W of the temporary core region 20 and the thickness T of the actual core region 200 depend on the mold type, And the thickness (Td) of the mold base plate.

6A and 6B, depending on the length of the lateral width L and the longitudinal width W of the temporary core region 20, The distance dca from the highest point of the core 100 to the upper side of the core and the distance from the lowest point of the article 100 to the lower side dco of the core. In this case, as exemplified in [Table 1], it is preferable to work on a lane basis with a smaller width as a priority reference, with a longer width of the transverse width and the vertical width of the temporary core.

L (or W) W (or L) dco dca ~ 300 ~ 200 45 35 201 ~ 50 301 ~ 500 ~ 250 50 45 251 ~ 55 50 501 ~ 700 ~ 250 55 55 251 ~ 60 701 to 1000 ~ 250 55 60 251 to 700 60 701 ~ 70 65 1001 ~ ~ 250 55 60 251 to 700 60 701 to 1000 70 65 1001 ~ 80

Accordingly, the thickness Tct of the temporary core region 20 can be obtained. In the case of the insert type, the temporary core region 20 thus obtained becomes the actual core region 200.

6B, the thickness of the temporary mold base plate 30 can be obtained in accordance with the lateral width and the vertical width of the temporary core region 20. As shown in FIG. The mold disc can be divided into a top plate and a bottom plate. In this case, the distance (Dca) from the upper surface of the core to the upper surface of the temporary mold disc, and the distance (Dca) from the lower surface of the core to the upper surface of the temporary mold disc, The thickness (Tct) of the temporary mold base plate can be determined by determining the distance from the lower surface of the core to the lower surface (Dco) of the temporary mold base plate.

5 and 7, the width (L) and the vertical width (W) of the temporary core region 20 are set to be equal to the thickness of the temporary mold base plate 30 Can be obtained. The distance Pca from the highest point of the article 100 to the upper surface of the mold base plate (for example, the upper base plate) and the distance Pca from the highest point of the projected article 100 (Pco) from the lowest point of the mold base plate (for example, the lower plate) to the lower side of the mold base plate (for example, the lower plate). Accordingly, the thickness of the mold base plate can be obtained when the mold base is of the disk integral type. In the case of a monolithic integrated type, since the original plate serves also as a core, the thickness of the temporary core plate expands to become the thickness of the original plate.

If the cavity is of the insert type and the core is monolithic, the thickness of the cavity and the thickness of the mold disc can be obtained from the core side as a single disc type and the cavity as an insert type. In addition, if the core is of the insert type and the cavity is monolithic, the thickness of the core thickness and the thickness of the mold disc can be obtained from the cavity in the form of a disk integrally and the core in the form of an insert.

Thereafter, as shown in Figs. 8 to 11, the width of the mold base plate is obtained. The width of the mold disc varies depending on whether a slide core is present or not. Therefore, the operator can first select whether or not the slide core is present. Alternatively, it is possible to automatically determine whether or not to apply the slide core by automatically searching for the portion having the undercut portion.

8, when the slide core is not applied, the width W of the temporary core region 20 or the actual core region 200 is set in advance based on the width L and the width W of the core region 200, Add the offset (Xd, Yd) values to the left, right, top, and bottom sides. Accordingly, it is possible to obtain the width Ld, Wd of the actual mold base plate that can accommodate the actual core region. This completes the area of the original plate (the upper plate and the lower plate).

In this case, in the case of the disk integrated type, the temporary core region 20 is expanded so that the width and the vertical width of the actual core (mold base plate) region are obtained. In this case, the temporary core region 20 is recognized as one virtual block, and the width of the mold disc (actual core) can be obtained by setting an offset from the virtual block.

On the other hand, when the slide core is applied, as shown in Figs. 9 to 11, if the slide core region is located outside the mold disc region, the mold disc region must extend to the slide core.

To this end, the width of the mold disc region is determined by adding a certain distance offset value from the transverse width and the vertical width of the temporary core region 20 or the actual core region 200.

In addition, the slide core region is obtained. First, as shown in FIG. 10A, the slide core reciprocating motion axis and the outermost point of the undercut 140 are designated. The outermost point of the undercut portion can select the uppermost point 140n, the leftmost point 140w, and the rightmost point 140e of the undercut portion. The lowest point 140s of the undercut portion may also be selected. In this case, the undercut portion 140 may be grasped in the automatically modeled article 100, and the outermost point of the undercut portion may be determined from the axis of movement of the slide core in the reciprocating direction.

Then, the vertical width and the horizontal width of the slide core region are obtained. At this time, the leftmost point of the slide core is obtained by adding the specified offset value Ow from the leftmost point 140w of the undercut portion, and the rightward width is obtained from the offset value Oe designated from the rightmost point 140e of the undercut portion, (Ws) of the slide core region can be obtained by obtaining the rightmost point of the slide core.

The upper and lower widths Ls of the slide core region are set such that the length Hs from the point where the Z axis of the WCS coordinate system is 0 to the uppermost point of the slide core region and the point where the Z axis of the WCS coordinate system is 0 Can be obtained by adding the length Ts to the lowermost point of the area. The uppermost point of the slide core region 400 is obtained by adding a specified offset value On from the uppermost point 140n of the undercut portion to the uppermost point of the slide core region 400 from the point where the Z axis of the WCS coordinate system is 0 The length Hs to the side point is determined. The position of the lowermost point of the slide core region 400 can be obtained through the coordinates of the lower side of the mold disc. That is, the Z-axis value (Z) of the WCS (Work Coordinate System) at the lower side of the mold bottom plate is obtained. The Z axis value Ts at the lowermost point of the slide core region is obtained in accordance with the range of the Z value. Accordingly, the vertical width Ls of the slide core region can be obtained.

Thereafter, the depth (Ds) of the slide core region is obtained. The depth Ds of the slide core region can be obtained by adding the depth As of the transport block portion 420 and the depth Bs of the step block portion 430. [ 9, the slide core region 400 includes an undercut core portion 410 constituting a core of the undercut portion, a transfer block portion 410 fixed to the undercut core portion to move the undercut core portion forward and backward 420 and a step block part 430 formed stepwise from the transfer block part 420. A guide lean pin or the like may be seated on the step block portion 430.

The depth As of the transfer block unit 420 can be obtained from the z-axis height Hs of the uppermost point of the slide core region 400 in the WCS coordinate system as shown in FIG. 10A. The depth of the step block portion 430 can be obtained from the z-axis height Ts of the lowermost point of the slide core region 400 of the WCS coordinate system and the length Ws of the width of the left and right of the slide core region 400. As a result, square blocks of the width, height, and depth of the slide core region can be obtained.

When the slide core region is determined, it is determined whether the outer edge of the temporary mold disc region at the same position where the slide core region exists includes the slide core region.

11, in the WCS system, the distance from the origin to the outer edges of the slide core regions 401, 402, 403 and 404 and the distance between the outer edge of the slide core regions 401, 402, 403, The distance between the outer edge of the circular region 30 and the origin can be compared.

If the outer edge of the temporary mold disc does not include the slide core region, the outer edge of the temporary mold disc is extended to be the same as the outer edge of the slide core region to complete the actual mold disc region. 11, if the left width Lsw of the slide region is longer than the left width Ldw of the temporary mold original plate, the left width length of the temporary mold original plate is set to the left side of the slide region Width length Lsw.

In this case, the left width Lsw of the mold disc is compared with the right width depth Lse of the mold disc, and the left and right width lengths of the mold disc area are made equal to the longer width depth Lsw . Further, the length of the upper side of the mold disc is compared with the width of the lower side of the mold disc, and the width of the mold disc and the width of the lower side are made the same with the longer width. Thus, the actual mold disc area 300 in the case of the slide core is determined.

Thereafter, as shown in Fig. 12, the plate operating stroke is determined according to the height at which the article 100 is stuck in the core or the cavity. In this case, the z-axis distance between one point S1 nearest to the plate of the article 100 and the lower surface S2 of the main body of the article 100 may be determined as the plate 600 operating stroke. The plate operating stroke is a factor for determining the height of the mold base leg as described later.

Thereafter, as shown in Figs. 13A and 13B, the sheet material area other than the mold disc is determined in accordance with the selected mold base format. As described above, the mold base type can be divided into a two-stage mold, a special mold, and a hot runner mold. In the case of a two-stage mold, an upper fixing plate 710 is disposed on the upper surface of the upper plate 300h, and a lower fixing plate 720 is provided on the lower side of the lower plate 300l.

In the case of a special mold, it means that at least one intermediate plate is formed between the mold original plate and the fixing plate. In this case, the intermediate plate may be a template forming the sprue.

In the case of the hot runner type, as shown in FIG. 13A, a spacer plate 510 and a holding plate 520 are sequentially stacked between the upper fixing plate 710 and the upper plate 300h. In this case, the spacer plate 510 is a plate into which a predetermined type of hot runner system is inserted, and the holding plate 520 is a plate for supporting the hot runner.

In this case, the intermediate plate, the spacer plate, the holding plate, and the like except for the fixing plate may have the same width and width as the mold disc 300. In addition, except for the hot runner type, the basic thickness of the plates is determined according to the width of the upper plate and the length of the vertical width.

When the hot runner type is first selected, the thickness of the spacer plate and the upper fixed plate set in advance in accordance with the hot runner system currently available on the market is determined. For example, if the thickness of the BALA 18. BALA 25, BALA 35, BALA 45, spacer plate, and top mounting plate of the BALA Hattrunner system of the guideline business is preset and the user selects one of the BALA hot runner systems , The thickness of the plate is automatically adjusted in accordance therewith.

In the case of the holding plate 520, as shown in FIG. 13B, it can be obtained in accordance with the length of the horizontal width Ld and the vertical width Wd of the upper plate 300h. In this case, the long width of the width and the width may be set as the first reference, and the small width may be set as the second reference.

Thereafter, as shown in Fig. 14, the direction of the vanes 701 of the fixing plates 710 and 720 for fixing to the injection machine and the clamping protrusion amount P are determined. In this case, the clamping protrusion amount is set to be larger in proportion to the size of the mold clamping force.

Thereafter, as shown in Fig. 15, the upper and lower fixing plates 710 and 720 are adjusted to define the injection molding machine mounting relationship. In this case, if the injector and the clamping force are determined, the clamping thickness Tf can be determined accordingly.

Thereafter, as shown in Fig. 16, the legs 800 are arranged. The legs are set in accordance with the long width of the vertical width Wd and the lateral width Ld of the mold disc 300.

Thereafter, as shown in Fig. 17, the plateau region is determined. The width of the plateau region may be determined according to the core region. That is, the width of the plateau region can be determined within a range of 2 mm to 15 mm smaller than the width of the core, in accordance with the size of the mold clamping force and the fitting distance at the end of the article 100.

The thickness (De) of the flat plate can be determined in proportion to the horizontal width and the vertical width of the predetermined flat plate area, and the thickness of the upper plate and the bottom plate can be determined. In addition to the upper and lower plates, the user can select which additional plates will be added, in which case the plates can be designed either automatically or manually.

Separately, the "top" direction and the area where the cloth arrows will be placed can be determined based on the width and length of the mold disc. The reference plane can also be automatically set.

Further, the water flow prevention groove can be obtained. The water flow prevention groove is designed to prevent the cooling water from flowing to the forming part at the time of injection.

Accordingly, the mold base plate material can be automatically designed.

After that, each mold part is automatically modeled.

First, as shown in FIGS. 18A and 18B, a step S90 is performed to obtain a return pin region and a return spring specification according to the thickness of the lower plate 3001 of the mold base plate material and the weight of the plate 600 .

In this case, as shown in FIG. 18A, the specification of the return pin 1100 is determined based on at least one of a lateral width Le and a vertical width We of the plate, more preferably, (We in Fig. 18A).

18B, the head diameter φHD, the body diameter φRD, the head thickness Hrh, the diameter φA of the return spring region, ), The diameter (φSD) of the return pin insertion groove of the lower plate, the distance (dr) between the center point of the return pin head and the outermost edge of the plate can be determined according to a predetermined table as shown in [Table 2].

We φRd φHd Hrh φA φSD dr -400 25 30 8 55 50 50 401- 30 35 8 65 60 55

Accordingly, the diameter of the return spring is known.

In addition, the initial compression ratio of the return spring is determined according to the weight of the plate. The constant value of the spring can be known according to the initial compression ratio.

Thereafter, a suitable return spring that matches the spring constant of the return spring and the return spring diameter is determined.

Thereafter, as shown in Fig. 19, the step S100 of obtaining the diameter Dg and the position of the guide pin 1200 is carried out. The guide pins serve as guides so that the upper plate 300h and the lower plate 300l are aligned with each other.

In this step, the width D of the guide pin satisfying the diameter of the guide pin is obtained when the width of the mold disc is L and the vertical width of the mold disc is W.

Also, a step of obtaining the area of the guide pin 1200 in accordance with the width L and the width W of the original plate is obtained. In this case, the position of the center point of the guide pin is separated from the edge of the mold disc by a distance Dg + 10 obtained by adding a certain distance (for example, 10 mm) to the diameter Dg of the guide pin in the lateral direction and the longitudinal direction, It can be a point in distance. In this case, the center point of the guide pin at the position of the reference plane display 310 may be further spaced by the reference plane display thickness ti.

After the guide pin 1200 is inserted into the core region 200, the guide pin 1200 is inserted into the core region 200. When the core region 200 is interfered with the guide pin 1200, A step of repositioning is performed.

In the step of repositioning the guide pin 1200, the upper and lower discs can be extended by a predetermined length (e.g., 10 mm). Accordingly, the position of the guide pin is shifted as the edge of the lower plate changes. In this state, it is examined whether interference of the region of the guide pin 1200 with the core region 200 occurs. In this state, if the guide pin region does not interfere with the core region, the guide pin region is determined, and if interference occurs, the steps of expanding the upper and lower discs are repeated.

Thereafter, a step (S110) of obtaining the area and size of the mold base plate assembly bolt in accordance with the mold type is performed.

20A, the mold base plate assembly bolt includes a first assembly bolt group B1 for assembling the lower fixture plate 720, the plate leg 800, and the lower plate 300l, A second assembly bolt group B2 for assembling the upper fixing plate 710 and the upper plate 300h and a third assembly bolt group B3 for fixing the lower fixing plate 720 and the plate leg 800 And a fourth assembly bolt group B4 for fastening between the plate 600 and the fourth assembly bolt group B4.

20B, in addition to the B1, B2, B3 and B4 assembly bolt groups, a gap between the upper fixing plate 710, the spacer plate 510, and the holding plate 520 A fifth assembling bolt group B5 to be fixed can be disposed.

The step of determining the bolt size and the installation amount of the first assembly bolt group may be determined according to the lateral width Lb and the longitudinal width Wb of the plate leg 800 as shown in Fig. 21A. A short width of the width length can be set as a first reference and a long width can be set as a second reference. An example of the determined values of the bolt size and the installation amount is shown in Table 3.

Wb (small width) Lb Bolt size Number of bolts installed -80 -800 M16 3 801-1000 M16 4 1000- M16 6 81-120 -800 M20 3 801-1300 M20 4 1301- M20 6 121- -800 M24 3 801-1300 M24 4 1301- M24 6

21B, the positions of the outermost bolts B1_a.B1_c on both sides of the first assembly bolt group can be determined as the diameter of the guide pin 1200 is fixed. The position of the outermost bolt according to the diameter of the guide pin is predetermined. Thereafter, the bolts (B1_a.b1_b, B1_c) of the first assembly bolt group are arranged at regular intervals.

The second assembly bolt group B2 is assembled between the upper fixing plate 710 and the upper plate 300h and is determined to have the same size and quantity at symmetrical positions with respect to the first assembly bolt group B1.

The third assembly bolt group B3 is set in accordance with the quantity and position of the bolts of the first assembly bolt group B1. For example, when the number of bolts of the first assembly bolt group is 3, 4, and 6, respectively, the number of bolts of the third assembly bolt group B3 may be set to 2, 3, and 3, respectively.

In this case, as shown in FIG. 22, when the number of bolts of the first assembly bolt group B1 is three and the number of bolts of the third assembly bolt group B3 is two, The bolt of the first assembly bolt group B3 is located at a position of 1: 2 between the outermost bolts B1_a and B1_c of the first assembly bolt group and the center bolt B1_b between the bolts of the first assembly bolt group . In other cases, the bolts of the third assembly bolt group B3 may be disposed at the same spacing between the bolts of the first assembly bolt group.

The fourth assembly bolt group B4 has a bolt size, a bolt quantity, a bolt installation position, and a bolt installation position as shown in [Table 4] in accordance with the lateral width Le and the longitudinal width We of the flat plate 600, It can be judged whether or not the additional plate is installed at the center of the plate. In this case, in Table 4, S represents the distance that the outermost bolts of the fourth assembly bolt group are spaced apart from the edge of the plate, and the bolts of the fourth assembly bolt group may be installed at equal intervals from each other.

We Le Bolt size Volt quantity S Whether to install in center of the plate -200 -400 M10 3 15 X 401-600 M10 4 15 X 601-1000 M10 5 15 X 1001- M10 6 15 X 201-500 -400 M12 3 15 X 401-600 M12 4 15 X 601-800 M12 5 15 X 801-1000 M12 6 15 X 1001-1300 M12 7 15 X 1301- M12 8 15 X 501- -600 M16 3 20 O 601-800 M16 4 20 O 801-1200 M16 5 20 O 1201-1600 M16 6 20 O 1601-2000 M16 7 20 O 2001- M16 8 20 O

On the other hand, in the case of the hot runner type, the fifth assembly bolt group B5 can be obtained by referring to the installation quantity and position of the second assembly bolt group B2. In this case, when the number of bolts of the second assembly bolt group is 3, 4, and 6, respectively, the number of bolts of the fifth assembly bolt group B5 may be set to 2, 3, and 4, respectively.

When the number of bolts of the second assembly bolt group B2 is three and the number of bolts of the fifth assembly bolt group B5 is two, the bolts of the fifth assembly bolt group B5 are fixed to the second assembly Between the bolts of the bolt group, the distance between the outermost bolt of the second assembly bolt group and the center bolt may be located at a position of 1: 2. In other cases, the bolts of the fifth assembly bolt group B5 may be disposed at the same spaced positions between the bolts of the second assembly bolt group.

On the other hand, each mold base plate member is formed with an insertion groove at the insertion position of the assembly bolt group. In this case, if the position of the end of the bolt of the assembly bolt group is spaced apart from the end of the plate by less than 5 mm, the mold base plate material in which the end of the bolt is positioned may be designed to pass through the assembly bolt group.

Thereafter, a step (S120) of obtaining a fitting pin area and a size is performed. 23, the fitting pins are provided between the upper fixing plate 710 and the upper plate 300h, between the lower plate 3001 and the lower plate 300, and between the upper plate 300 and the lower plate 300, 800 and the upper plate 720 and serves to join these plates together.

In this case, as shown in [Table 5], the fitting pin 1300 can be formed by fitting the number of the fitting pins and the size of the fitting bolt group according to the positions of the first assembly bolt group (second assembly bolt group) And location.

B1 (B2) Quantity B3 Quantity Number of custom pins Custom Pin Size 3 2 2 Diameter 20 x 50 4 3 2 Diameter 20 x 50 6 3 2 Diameter 20 x 50

The positions of the fitting pins may be appropriately disposed between the first assembly bolt group and the third assembly bolt group, and between the first assembly bolt group and the third assembly bolt group. For example, when the number of bolts of the first assembly bolt group arranged on one plate leg is 3 and the number of bolts of the third assembly bolt group is 2, And between the intermediate bolts of the first assembly bolt group and between the other bolt of the third assembly bolt group and the intermediate bolt of the first assembly bolt group,

When the number of bolts of the first assembly bolt group disposed on one plate leg is four and the number of bolts of the third assembly bolt group is three, the fitting pins are disposed on the outermost bolts and the bolts on one side of the third assembly bolt group, Between the outermost bolts on one side of the first assembly bolt group and between the outermost bolts on the other side of the third assembly bolt group and the outermost bolt on the other side of the first assembly bolt group.

In the case where the number of bolts of the first assembly bolt group disposed on one plate leg is 6 and the number of bolts of the third assembly bolt group is 4, Between the outermost bolts on one side of the bolt and the first assembly bolt group, and between the outermost bolt on the other side of the third assembly bolt group and the outermost bolt on the other side of the first assembly bolt group.

Thereafter, a step of obtaining the mold opening preventing member and the fixing bolt specification can be performed. As shown in FIGS. 24A, 24B and 25, the mold opening prevention member 1450 and the fixing bolt 1400 are fixed to prevent the mold from being unnecessarily opened between the upper plate 300h and the upper plate 300h. .

For this purpose, first, the fixed side weight and the movable side weight are obtained based on the parting line, respectively. 25, the horizontal width of the upper fixing plate 710 is Lf1, the vertical width of the upper fixing plate 710 is Wf1, the length from the part line to the upper surface of the upper fixing plate 710 is hf1 , The fixed side weight can be obtained as Lf1 x Wf1 x hf1 x 7.8 x 10 ^-6 kg.

If the width of the top plate 720 is Lf2, the height of the top plate 720 is Wf2, and the length from the part line to the bottom surface of the top plate 720 is hf2, then the movable side weight is Lf2 x Wf2 x hf2 x 7.8 x 10 ^-6 kg. In this case, 7.8 x 10 ^-6 is the specific gravity of iron.

The size of the fixing bolt can be determined on the basis of the large weight of the movable side weight and the fixed side weight. When the size of the fixing bolt is determined, the specification of the mold opening prevention member 1450 is determined according to the size of the fixing bolt.

In addition, as shown in FIG. 24B, the mounting position of the mold opening prevention member 1450 can be set at a predetermined distance, for example, 5 mm away from the outermost portion of the mold discs 300h and 300l.

Thereafter, a step of selecting an ejector hole area may be performed.

This step is preceded by setting the reference ejector hole area in advance. Normally, a plurality of reference ejector holes are provided, and an ejector hole area automatically required in accordance with the bottom plate region can be selected.

In this case, it is also possible to deselect the ejector hole area which the user will not manually use, or to select another ejector hole.

Thereafter, it is judged whether or not the positions of the reference ejector hole area and the actual ejector hole area are the same. Normally, the standard ejector hole can be applied by the mold maker, and the actual ejector hole can be regarded as used by the actual mold maker, and there may be a difference in area between the reference ejector hole and the actual ejector hole.

If the positions of the reference ejector hole area and the actual ejector hole area are not the same, the position of the actual ejector hole area is added.

When the reference ejector hole partially overlaps with the actual ejector hole, as shown in FIG. 26, the tangent of the reference ejector hole 1510 and the tangent line of the actual ejector hole 1520 are connected to each other, Hole and a slotted ejector hole 1500 including the actual ejector hole. In addition, when the reference ejector hole 1510 and the actual ejector hole 1520 have the same center, the ejector hole 1500 having a larger diameter can be selected and unified. Accordingly, it is not necessary to drill a separate ejector hole, so that it is applicable to a test mold and a finished mold.

 Thereafter, the locate ring can be installed. The locating ring serves as a guide when mounting the injection molding machine, and can basically be positioned at the center of the mold. The diameter of the locating ring can be determined according to the magnitude of the mold clamping force.

On the other hand, if the position of the nozzle (machine center) of the injection molding machine and the mold center do not match, and the locate ring is designated as the mold center position, it should be reset to the position of the eject hole. In this case, the position of the control hole can be readjusted based on the coordinates of the locate ring.

On the other hand, the ejector guide pin which helps the movement of the plate can be automatically modeled. In this case, specifications of the ejector guide pin can be completed based on the small width of the plate.

In this case, if the ejector guide pin interferes with other components such as the ejector hole, the return pin, and the bolt, the position can be set by automatically moving a predetermined distance by the shortest distance avoiding interference.

In addition, a hot runner nozzle guide pin can be modeled to safely store nozzles and provide assembly stability in a hot runner mold. In this case, when the hot runner nozzle guide pin invades the core region, the hot runner nozzle guide pin can be automatically moved.

Thereafter, as shown in Fig. 27, the eyebolt region is determined. In principle, the eye bolt region 1600 applied to the mold base plate is positioned at the center of each plate.

In addition, since the upper plate 300h and the eye bolts 1610 and 1620 for the lower plate 3001 can be used when moving the entire metal mold, ≪ / RTI > In addition, a separate eyebolt area can be defined at the center of each of the upper plate and the lower plate.

In this case, the size of the eyebolt region and the specification of the eye bolt can be specified in accordance with the weight of each plate material. In the case of a safety pocket, it can be determined according to the specification of the eyebolt.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

20: temporary core area 100: product
200: actual core area 300: mold disc
400: slide core region 510: spacer plate
520: Holding plate 600: Plate
800: Plate leg 1100: Return pin
1200: guide pin 1300: alignment pin
1400: Fixing bolt 1450: Mold opening prevention piece
1500: ejector hole area 1600: eyebolt area
B1: first assembly bolt group B2: second assembly bolt group
B3: third assembly bolt group B4: fourth assembly bolt group

Claims (10)

Modeling the article;
Obtaining a mold clamping force through a modeling shape of the article;
Obtaining a region of the mold base plate material and the mold base plate in accordance with the mold clamping force, the size of the modeled article, the mold type, and the mold base type;
Obtaining a return pin region and a return spring specification according to the thickness of the lower plate and the weight of the plate of the mold base plate;
Determining a diameter and a position of the guide pin according to a width and a width of the mold original plate;
A step of obtaining an area and a size of the mold base plate assembly bolt according to the mold type
Determining an alignment pin area and a size in accordance with an area of the mold base plate assembly bolt;
Determining the position and size of the mold opening preventing member and the fixing bolt in accordance with the weight of the movable-side mold base plate member and the fixed-side mold base plate member; And
Obtaining a locate ring region;
Wherein the injection molding machine is an automatic mold modeling method. The method according to claim 1,
The step of obtaining the specification of the return pin region and the return spring includes:
Determining a return pin diameter and a return spring diameter based on at least one of a horizontal width and a vertical width of the plate;
Obtaining an initial compression ratio of the return spring according to the weight of the flat plate;
Obtaining a spring constant through an initial compression ratio of the return spring; And
Determining a suitable return spring having a spring constant of the return spring and a return spring diameter;
The method comprising the steps of: The method according to claim 1,
The step of obtaining the guide pin diameter and position comprises:
Obtaining the diameter of the guide pin satisfying the diameter of the guide pin when the horizontal width of the mold base plate is L and the vertical width of the mold base plate is W;
Obtaining a region of the guide pin in accordance with a width and a width of the mold original plate;
Examining whether the area of the guide pin obtained is interfering with the core;
Readjusting the position of the guide pin when interference occurs in the region of the guide pin;
The method comprising the steps of: The method of claim 3,
The step of obtaining the area and size of the mold base plate assembly bolt according to the mold type includes:
Determining the bolt size and the installation amount of the first assembly bolt group assembling between the lower fixing plate, the plate leg, and the lower plate according to the horizontal width length and the vertical width length of the plate leg;
Positioning the outermost bolts on both sides of the first assembly bolt group according to the diameter of the guide pin;
Disposing the bolts of the first assembly bolt group at regular intervals;
Defining a second assembly bolt group for assembling between the upper fixing plate and the upper plate at a position symmetrical to the first assembly bolt group in the same size and quantity;
Determining a quantity and position of a bolt in a third assembly bolt group that fixes between the top plate and the plate leg according to the quantity and position of the bolts in the first assembly bolt group;
Determining a size, a quantity, and a position of a bolt of a fourth assembly bolt group to be fastened between the plates in accordance with the length of the width and length of the plate;
The method comprising the steps of: 5. The method of claim 4,
The step of obtaining the position and size of the fitting pin region may include determining a number, a size, and a position of the fitting pin according to the position of at least one of the first assembly bolt group and the second assembly bolt group and the third assembly bolt group Wherein the injection molding machine is a mold injection molding machine. 6. The method of claim 5,
When the number of bolts of the first assembly bolt group arranged on one plate leg is three and the number of bolts of the third assembly bolt group is two, the bolt is fixed to one bolt of the third assembly bolt group and the first bolt Side bolts of the third assembly bolt group and the intermediate bolts of the first assembly bolt group,
When the number of bolts of the first assembly bolt group disposed on one plate leg is four and the number of bolts of the third assembly bolt group is three, the fitting pins are disposed on the outermost bolts and the bolts on one side of the third assembly bolt group, Between the outermost bolts on one side of the first assembly bolt group and between the outermost bolts on the other side of the third assembly bolt group and the outermost bolt on the other side of the first assembly bolt group,
When the number of bolts of the first assembly bolt group disposed on one plate leg is 6 and the number of bolts of the third assembly bolt group is 4, the fitting pins are disposed on the outermost bolts on one side of the third assembly bolt group, Wherein the first assembly bolt group is disposed between the outermost bolts on one side of the first assembly bolt group and the outermost bolts on the other side of the third assembly bolt group and the outermost bolt on the other side of the first assembly bolt group . The method according to claim 1,
The step of obtaining the mold opening preventing member and the fixing bolt specification includes:
Obtaining a fixed side weight and a movable side weight based on the parting line;
Obtaining a size of the fixing bolt based on a larger weight of the fixed side weight and the movable side weight;
Determining a size of the mold opening prevention member in accordance with the size of the fixing bolt; And
Determining a position of the fixing bolt at a position spaced apart from the edge of the mold by a predetermined distance;
The method comprising the steps of: The method according to claim 1,
Further comprising the step of selecting an ejector hole area in the house fixing plate,
Wherein the step of selecting the ejector hole area comprises:
Setting a reference ejector hole area in advance;
Determining whether the reference ejector hole area and the actual ejector hole area are located at the same position; And
And adding the position of the actual ejector hole when the reference ejector hole and the actual ejector hole are not located at the same position. 9. The method of claim 8,
Wherein when the reference ejector hole partially overlaps with the actual ejector hole, the tangent line of the reference ejector hole and the tangent line of the actual ejector hole are connected to replace the reference ejector hole and the actual ejector hole,
Wherein the ejector hole having a larger diameter is selected and unified when the reference ejector hole and the actual ejector hole have the same center. The method according to claim 1,
Further comprising the step of determining an eyebolt region,
Wherein the step of determining the eyebolt region comprises:
So that the eye bolts applied to the upper plate and the lower plate are arranged at regular intervals in the center of gravity Oc; And
And positioning the mold base plate material except for the upper plate and the lower plate at the center of each plate material.

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