CN112976517B - Injection mould part and power design method of heating pipe thereof - Google Patents

Injection mould part and power design method of heating pipe thereof Download PDF

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Publication number
CN112976517B
CN112976517B CN202110187861.5A CN202110187861A CN112976517B CN 112976517 B CN112976517 B CN 112976517B CN 202110187861 A CN202110187861 A CN 202110187861A CN 112976517 B CN112976517 B CN 112976517B
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mold
row
equal
heating
heating pipes
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CN112976517A (en
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于博
骆玉叶
张健
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • B29C2045/2651—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs using a plurality of mould cavities

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to the field of molds and provides a power design method for an injection mold part and a heating pipe thereof. The injection mold part provided by the invention comprises a mold body and a plurality of heating pipes, wherein the mold body is provided with a plurality of first mold cavities distributed according to m rows and n columns, each row of first mold cavities is distributed along a first direction, each column of first mold cavities is distributed along a second direction, at least m +1 heating pipes are distributed into m +1 rows along the first direction, at least n +1 heating pipes are distributed into n +1 columns along the second direction, m multiplied by n spaces are surrounded by the plurality of heating pipes, and each first mold cavity corresponds to each space one by one. According to the invention, the power relation of each heating pipe is designed according to the size parameters among the first die cavity, the end surface and the heating pipes, so that the first die cavities are uniformly heated, the forming quality is improved, the design experiment times of the heating pipes are reduced, and the power of each heating pipe is determined quickly.

Description

Injection mould part and power design method of heating pipe thereof
Technical Field
The invention relates to the field of molds, in particular to a power design method for an injection mold part and a heating pipe thereof.
Background
The mold mainly comprises a mold body and a heating pipe assembly, wherein the mold body is provided with a mold cavity, and the heating pipe assembly generates heat to heat molding materials in the mold cavity.
However, under the condition that the die body has a plurality of die cavities, the improper power setting of heating pipe subassembly leads to the shaping material in each die cavity to be heated unevenly easily, in order to make the shaping material in each die cavity be heated evenly in the practice, often need carry out many times experiment to the arrangement position and the power of heating pipe and revise, lead to heating pipe subassembly to set up the degree of difficulty great.
Disclosure of Invention
One of the objects of the present invention is to provide an injection mold component that has a simple heating tube arrangement and facilitates uniform heating throughout the first mold cavity.
To achieve the above objects, the present invention provides an injection mold part comprising a mold body having a plurality of heating pipes thereon, and a plurality of heating pipesThe heating device comprises a plurality of first die cavities, a plurality of second die cavities, a plurality of heating pipes and a plurality of heating pipes, wherein the plurality of first die cavities are distributed according to m rows and n columns, each row of first die cavities are distributed along a first direction, each column of first die cavities are distributed along a second direction, at least m +1 heating pipes are distributed into m +1 rows along the first direction, at least n +1 heating pipes are distributed into n +1 columns along the second direction, m multiplied by n spaces are surrounded by the plurality of heating pipes, each first die cavity corresponds to each space one by one, the size of each die body in the first direction is Ba, and the size of each die body in the second direction is Da; along the first direction, a first end surface is arranged at one end of the die body close to the first die cavity of the 1 st row, and a second end surface is arranged at one end of the die body close to the first die cavity of the m th row; along the second direction, a third end face is arranged at one end of the die body close to the 1 st row of first die cavities, and a fourth end face is arranged at one end of the die body close to the nth row of first die cavities; distance B between central line of first die cavity of row 1 and first end face1Equal to the distance B between the middle line of the first mold cavity of the m-th row and the second end facem+1Distance D between the central line of the first cavity in column 1 and the third end face1Equal to the distance D between the central line of the first die cavity of the nth column and the fourth end surfacen+1(ii) a The thickness of the die body in a third direction is Fa, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction; under the condition that x is not equal to 1 and x is not equal to m +1, the distance between the central line of the first die cavity of the x-1 th row and the heating pipe of the x-th row is Bx1The distance between the central line of the first mold cavity of the x row and the heating pipe of the x row is Bx2(ii) a Under the condition that y is not equal to 1 and y is not equal to n +1, the distance between the central line of the first die cavity in the y-1 th row and the heating pipe in the y-1 th row is Dy1The distance between the central line of the first die cavity in the y row and the heating pipe in the y row is Dy2(ii) a Power p of row 1 heating pipe1Equal to the power p of the m +1 th row of heating pipesm+1＝p0+ h × Da × Fa × j; under the condition that x is not equal to 1 and x is not equal to m +1, the power p of the x-th row of heating pipesx＝p0×(Bx1+Bx2)/B1(ii) a Power q of heating tube in row 11Equal to the power q of the (n + 1) th heating tuben+1＝q0+ h × Ba × Fa × j; under the condition that y is not equal to 1 and y is not equal to n +1, the power q of the heating tube in the y-th rowy＝q0×(Dy1+Dy2)/D1；pIn/qIn＝Ba/Da，pIn＝p(m+1)/2Or pIn＝p(m+2)/2Or pIn＝p(m+3)/2；qIn＝q(n+1)/2Or q isIn＝q(n+2)/2Or q isIn＝q(n+3)/2(ii) a The total power of the heating pipes is Q,
Figure BDA0002943820660000021
Figure BDA0002943820660000022
wherein h is the convective heat transfer coefficient of the mold body surface, and j is a preset constant.
From the above, on one hand, the heating pipes are arranged in an arrangement mode, the arrangement mode of the heating pipes is simple, and the structure of the injection mould component is simplified; on the other hand, the power relation of each heating pipe is limited by adopting each relation formula of the invention, so that each first die cavity is uniformly heated, the forming quality is improved, the design experiment times of the heating pipes are reduced, and the power of each heating pipe is determined rapidly.
It should be noted that the first mold cavity of the present invention may preferably have a regular shape, such as a cylindrical shape, or a space formed by increasing/decreasing the material in a circumferential array manner based on a cylindrical space, where the central line of the first mold cavity is the geometric central line thereof; of course, the first cavity of the present invention may also be irregular, and the central line of the first cavity is an intersection line of a first surface and a second surface, where the first surface is a plane whose normal line is along the first direction and which bisects the first cavity into two spaces distributed along the first direction, and the second surface is a plane whose normal line is along the second direction and which bisects the first cavity into two spaces distributed along the second direction.
In a preferred embodiment, j has a value in the range of 50 to 60.
Further, j has a value of 55.
Another preferred scheme is that the number of each row of heating pipes is one; or the number of each row of heating pipes is at least two, and the heating pipes in the same row are distributed along the second direction.
In a further preferred embodiment, the injection mould part is a complete injection mould; or the injection mould part is a half mould for forming the injection mould, and the first mould cavity is a part of the forming mould cavity of the corresponding injection mould on the injection mould part.
In a further preferred embodiment, the first cavities have the same shape and size, and in the case of x ≠ 1 and x ≠ m +1, each Bx1Equal, each Bx2Are equal to, and Bx1＝Bx2(ii) a In the case where y ≠ 1 and y ≠ n +1, each Dy1Equal, each Dy2Are equal to, and Dy1＝Dy2。
Therefore, each first mold cavity is further heated uniformly.
In a further preferred embodiment, B1/B21A value of 1.2 to 1.5; and/or, D1/D21Has a value of 1.2 to 1.5.
In still another preferred embodiment, Q is equal to or greater than max { Q [ ]1，Q2}；Q1According to
Figure BDA0002943820660000031
Calculating to obtain; q2＝C2×M2×(T－T2)/(1000×t2)+h×A×(T-T∞) (ii) a Wherein T is the preset surface temperature of the die body, T∞Is ambient temperature, T1Is the initial temperature of the mold, t1For a predetermined preheating period, A is the surface area of the mold body, C1Specific heat capacity of the mold body, M1Mass of the mold body, C2Specific heat capacity of the moulding material, M2For the mass of the moulding material, T2Initial temperature, t, of the material being shaped2For a preset molding time.
Therefore, on one hand, the design method is further beneficial to reducing the experiment times of the design of the heating pipes and is convenient for rapidly determining the power of each heating pipe; on the other hand, the plastic mold can simultaneously meet the preset preheating time t in the using process1A preset molding time t2Preset mouldSurface temperature T and other design requirements.
In a further scheme, the value of Q is max { Q1，Q21.2 to 1.6 times.
The invention also aims to provide a heating pipe power design method of the injection mould part, which is simple in heating pipe arrangement and beneficial to uniformly heating all parts of the first mould cavity, and the design method adopts the injection mould part; the design method comprises the following steps: firstly, calculating the total power Q of a plurality of heating pipes; then the power of each heating tube is calculated respectively.
Therefore, the first die cavities are uniformly heated, the forming quality is improved, the design experiment times of the heating pipes are reduced, and the power of each heating pipe is determined quickly.
Drawings
FIG. 1 is a block diagram of an embodiment of an injection mold part of the present invention;
FIG. 2 is an upward view in the negative Z-axis of an embodiment of an injection mold part of the present invention;
FIG. 3 is an upward view in the negative Z-axis of an alternative embodiment of an injection mold part of the present invention;
fig. 4 is a cross-sectional view of an alternative embodiment of an injection molded part of the invention taken normal to the cross-section along the X-axis.
Detailed Description
The embodiment of the power design method of the injection mould part and the heating pipe thereof comprises the following steps:
fig. 1 and 2 of the present embodiment use a unified spatial rectangular coordinate system (right-hand system) to indicate the relative position relationship between the components, wherein the X-axis direction is the first direction, the Y-axis direction is the second direction, and the Z-axis direction is the third direction.
The injection mold part of this embodiment is the first half mold 100, the first half mold 100 is used for forming the injection mold with the second half mold, the first half mold 100 and the second half mold are distributed along the Z-axis direction, eight molding cavities are enclosed between the first half mold 100 and the second half mold, the eight molding cavities are divided into two rows distributed along the X-axis direction, and each row of molding cavities has four distributed along the Y-axis direction.
The first half mold 100 and the second half mold are respectively provided with eight heating pipes, the arrangement manner of the heating pipes on the first half mold 100 is the same as that of the heating pipes on the second half mold, and the first half mold 100 is taken as an example for description.
The first mold half 100 has eight mold half cavities 101 (an example of a first mold cavity) on the mold body in a one-to-one correspondence with eight molding cavities.
The eight heating pipes on the first half mold 100 are respectively a first transverse pipe 1, a second transverse pipe 2, a third transverse pipe 3, a first longitudinal pipe 4, a second longitudinal pipe 5, a third longitudinal pipe 6, a fourth longitudinal pipe 7 and a fifth longitudinal pipe 8, the first transverse pipe 1, the second transverse pipe 2 and the third transverse pipe 3 are sequentially distributed along the negative direction of an X axis, the first transverse pipe 1, the second transverse pipe 2 and the third transverse pipe 3 extend along the direction of the Y axis, the first longitudinal pipe 4, the second longitudinal pipe 5, the third longitudinal pipe 6, the fourth longitudinal pipe 7 and the fifth longitudinal pipe 8 are sequentially distributed along the positive direction of the Y axis, the first longitudinal pipe 4, the second longitudinal pipe 5, the third longitudinal pipe 6, the fourth longitudinal pipe 7 and the fifth longitudinal pipe 8 extend along the direction of the X axis, the eight heating pipes form a grid structure with the three transverse directions and the five longitudinal directions, the eight heating pipes surround eight spaces, and the spaces are in one-to-one correspondence with the half cavities 101.
An X-axis positive-direction side end face of the mold body of the first half mold 100 is a first end face, that is, the first end face is located at one end of the mold body of the first half mold 100, which is close to the row 1 half cavity 101 along the X-axis direction, and an X-axis negative-direction side end face of the mold body of the first half mold 100 is a second end face.
The Y-axis negative side end face of the mold body of the first half mold 100 is a third end face, that is, the third end face is located at one end of the mold body of the first half mold 100 close to the 1 st row of half cavities 101 along the Y-axis direction, and the Y-axis positive side end face of the mold body of the first half mold 100 is a fourth end face.
As shown in fig. 2, the distance between the first end face and the second end face is Ba, the distance between the third end face and the fourth end face is Da, and the thickness dimension of the first half die 100 in the Z-axis direction is Fa.
The distance between the first transverse pipe 1 and the first end surface is B10.1375 m (m), the distance between the second horizontal tube 2 and the midline of the 1 st row of half-cavities 101 is B210.0875m, the distance between the second transverse tube 2 and the midline of the row 2 half-cavity 101 is B220.0875m, the distance between the third transverse pipe 3 and the second end faceIs B3＝0.1375m。
The distance between the first longitudinal pipe 4 and the third end surface is D10.1m, the second longitudinal tube 5 is spaced from the centerline of the row 1 cavity half 101 by a distance D210.075m, the second longitudinal tube 5 is spaced from the median line of the row 2 half-chamber 101 by a distance D220.075m, the third longitudinal tube 6 is spaced from the median line of the row 2 half-chamber 101 by a distance D310.075m, the third longitudinal tube 6 is spaced from the median line of the row 3 half-chamber 101 by a distance D320.075m, the fourth longitudinal tube 7 is spaced from the median line of the row 3 half-chamber 101 by a distance D410.075m, the fourth longitudinal tube 7 is spaced from the median line of the row 4 half-chamber 101 by a distance D420.075m, the fifth longitudinal tube 8 is at a distance D from the fourth end face5＝0.1m。
The power of each heating tube is calculated as follows:
the first step is as follows: calculating a lower limit value Q of the total power of the eight heating pipes, wherein the lower limit value Q of the total power is more than or equal to max { Q1，Q2}。
Q1According to
Figure BDA0002943820660000051
M1＝ρ1×V1And (6) calculating.
Q2＝C2×M2×(T－T2)/(1000×t2)+h×A×(T-T∞)，M2＝2×4×ρ2×V2。
In the above formulas, T is the preset surface temperature of the first mold half 100 during the injection molding operation, and T is∞Is ambient temperature, T1Is the initial temperature of the first mold half, t1For a predetermined preheating period, A is the surface area of the first mold half 100, C1Is the specific heat capacity of the first mold half 100, M1Is the body mass, p, of the first mold half 1001Is the body density, V, of the first mold half 1001Is the volume of the first mold half 100, C2Specific heat capacity of the moulding material, M2Is the total mass of molding material in the half-cavity 101, p2As density of the moulding material, V2Is the volume of the single half-cavity 101, h is the first half-mould 100 coefficient of convective heat transfer, T, of the mold body surface2Initial temperature, t, of the material being shaped2For a preset molding time.
In this example, T is 398.15 kelvin (K), T∞＝300.15K，T1＝300.15K，t11800s, a 0.704436 square meters (m)2)，C1H 461000 joule/(kg. kefir) (J/kg. k), ρ17800 kilograms per cubic meter (kg/m)3)，V10.03324015 cubic meters (m)3)，C2＝1260000J/kg.K，ρ2＝1820kg/m3，V2＝0.0001625m3H 39W/(m-2.K)，T2＝300.15K，t2＝120s。
Calculate to obtain Q1＝4783.5W，Q25127W, and take Q8000W.
Q1Characterized in that: if necessary, the preheating time t is preset by the heating pipe1The surface of the first mold half 100 is heated to a predetermined surface temperature T, and the total minimum power required by the eight heating pipes is Q1。
Q2Characterized in that: in the molding process, if necessary, the molding time is preset for t2The molding material in the half-cavity 101 is heated and molded, and the minimum total power required by the eight heating pipes is Q2。
Calculating Q2In the relation of (A), C2×M2×(T－T2)/(1000×t2) The total power h × A × (T-T) representing the total power required for molding the molding material within the preset molding time period T2∞) Representing the total power of heat dissipation at a preset surface temperature T of the first mold half 100.
The total power Q of the eight heating pipes is calculated in the way of the embodiment, and the plastic mold can simultaneously meet the preset preheating time t in the use process1A preset molding time t2And the preset surface temperature T of the die and other design requirements.
Preferably, Q has a value max Q1，Q21.2 to 1.6 times.
The second step is that: and respectively calculating the power of each heating pipe.
Power p of the first cross tube 11Equal to the power p of the third cross tube 33＝p0+h×Da×Fa×j。
Power p of the second cross tube 22＝p0×(B21+B22)/B1。
Power p of the second cross tube 22Power q of the third longitudinal tube 62Satisfies the following relationship: p is a radical of2/q2＝Da/Ba。
Power q of the first longitudinal pipe 41Equal to the power q of the fifth longitudinal tube 85＝q0+h×Ba×Fa×j。
Power q of the second longitudinal tube 52＝q0×(D21+D22)/D1Power q of the third longitudinal tube 63＝q0×(D31+D32)/D1Power q of the fourth longitudinal tube 74＝q0×(D41+D42)/D1。
Figure BDA0002943820660000061
Where j is a preset constant, and in this embodiment, j is 55.
Calculating p according to the above formulas0＝1048.28W，p1＝1215.59W，p2＝1334.17W，p3＝1215.59W，q0＝615.77W，q1＝731.60W，q2＝923.66W，q3＝923.66W，q4＝923.66W，q5The calculation is completed, 731.60W.
Since the power of each heating pipe is determined according to each expression in the second step, the power distribution rule among the heating pipes is stable and reasonable, the surface of the half cavity 101 is heated uniformly, and the molding material is heated uniformly.
Particularly, the power of each heating pipe designed by the method of the embodiment can reduce the times of testing different powers for the heating pipes in the design process, and the power of each heating pipe can be determined quickly and accurately.
The embodiment passes through the horizontal pipe power p in the middle2Longitudinal tube power q with the middle part3To convert the relationship between the power of the corresponding horizontal tube and the power of the corresponding vertical tube, alternatively, in other embodiments of the present invention, the half cavities 101 are distributed in m rows and n columns, where p is adoptedIn＝qInConverting the horizontal tube power of the middle part and the vertical tube power of the middle part by xBa/Da, wherein pIn＝p(m+1)/2Or pIn＝p(m+2)/2Or pIn＝p(m+3)/2；qIn＝q(n+1)/2Or q isIn＝q(n+2)/2Or q isIn＝q(n+3)/2. Thus, if the number of rows of half-cavities 101 distributed in the X-axis direction is even, the power of the middle horizontal tube is represented by pIn＝p(m+2)/2The power of the middle vertical tube is represented by qIn＝q(n+2)/2(ii) a If the number of rows of the half-cavities 101 distributed in the X-axis direction is odd, the power of the horizontal tube in the middle is represented as pIn＝p(m+1)/2Or pIn＝p(m+3)/2The power of the middle vertical tube is represented by qIn＝q(n+1)/2Or qIn＝q(n+3)/2。
Alternatively, in other embodiments of the present invention, the value of j may be adjusted appropriately, for example, the value of j is between 50 and 60.
In this embodiment, the number of the heating pipes in each row is one, alternatively, in other embodiments of the present invention, the number of the heating pipes in each row may also be a plurality of heating pipes distributed along the Y-axis direction, for example, as shown in fig. 3, the number of the heating pipes 102 'in each row is equal to and corresponds to the number of the half cavities 101' in each row; the number of the heating pipes in each row can also be a plurality of heating pipes distributed along the X-axis direction.
When the number of the x row of heating pipes is more than one, pxRepresenting the total power of the row of heating tubes; in the same way, when the number of the heating pipes in the y-th row is more than one, q isyRepresenting the total power of the heating pipe array.
Alternatively, in other embodiments of the invention, the injection mold part is a part comprisingIn the injection mold of the first and second mold halves, the molding cavity of the injection mold is entirely located on the first mold half, and the second mold half is only used for covering the opening of the molding cavity, at this time, the heating pipe may be only arranged on the first mold half, and the power of the heating pipe is calculated according to the parameters of the whole injection mold, for example, V at this time2The volume of the whole molding die cavity, Fa is the size of the whole die body of the plastic die in the Z-axis direction, and A is the surface area of the whole die body of the injection die.
Alternatively, in another embodiment of the present invention, referring to fig. 4, the mold body of the first mold half 100 ' may be configured to have at least two layers distributed along the Z-axis direction, and the cavity half 101 ' and the heating tube 102 ' are located on different mold layers, where the thickness dimension Fa ' of the first mold half 100 ' in the Z-axis direction is the total dimension of the two mold layers.
Alternatively, in other embodiments of the invention, the injection mould part is covered with a heat insulating material on the outside surface except the side of the cavity half 101, although the convective heat transfer coefficient h is preferably the convective heat transfer coefficient of the outside surface.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.

Claims (9)

1. The injection mold part comprises a mold body and a plurality of heating pipes embedded in the mold body, wherein the mold body is provided with a plurality of first mold cavities, the plurality of first mold cavities are distributed in m rows and n rows, each row of first mold cavities is distributed along a first direction, each row of first mold cavities is distributed along a second direction, at least m +1 heating pipes are distributed in m +1 rows along the first direction, at least n +1 heating pipes are distributed in n +1 rows along the second direction, the plurality of heating pipes surround to form m multiplied by n spaces, each first mold cavity corresponds to each space one by one, the size of the mold body in the first direction is Ba, and the size of the mold body in the second direction is Da;
the method is characterized in that:
along the first direction, the die body is provided with a first end surface at one end close to the first die cavity of the 1 st row, and the die body is provided with a second end surface at one end close to the first die cavity of the m-th row;
along the second direction, a third end surface is arranged at one end, close to the 1 st row of the first die cavities, of the die body, and a fourth end surface is arranged at one end, close to the nth row of the first die cavities, of the die body;
distance B between central line of first mold cavity of row 1 and first end face1Equal to the distance B between the middle line of the first mold cavity of the m-th row and the second end facem+1Distance D between the central line of the first cavity in column 1 and the third end face1Equal to the distance D between the central line of the first mold cavity of the nth column and the fourth end surfacen+1;
The thickness of the die body in a third direction is Fa, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction;
under the condition that x is not equal to 1 and x is not equal to m +1, the distance between the central line of the first die cavity of the x-1 th row and the heating pipe of the x-th row is Bx1The distance between the central line of the first mold cavity of the x row and the heating pipe of the x row is Bx2；
Under the condition that y is not equal to 1 and y is not equal to n +1, the distance between the central line of the first die cavity in the y-1 th row and the heating pipe in the y-1 th row is Dy1The distance between the central line of the first die cavity in the y row and the heating pipe in the y row is Dy2；
Power p of row 1 heating pipe1Equal to the power p of the m +1 th row of heating pipesm+1=p0 + h×Da×Fa×j；
Under the condition that x is not equal to 1 and x is not equal to m +1, the power p of the x-th row of heating pipesx= p0×(Bx1+Bx2) /B1；
Power q of heating tube in row 11Equal to the power q of the (n + 1) th heating tuben+1=q0+h×Ba×Fa×j；
In the case where y ≠ 1 and y ≠ n +1Power q of heating tube in the y-th rowy= q0×(Dy1+Dy2) /D1;
pIn/qIn=Ba/Da，pIn=p(m+1)/2Or pIn=p(m+2)/2Or pIn=p(m+3)/2；
qIn=q(n+1)/2Or q isIn=q(n+2)/2Or q isIn=q(n+3)/2；
The total power of the heating pipes is Q, Q =
Figure 764828DEST_PATH_IMAGE002
；
H is the convection heat transfer coefficient of the surface of the die body, and j is a preset constant;
q is greater than or equal to max { Q1，Q2}；
Q1According to
Figure 947548DEST_PATH_IMAGE003
，
Figure 992864DEST_PATH_IMAGE004
Calculating to obtain;
Q2=C2×M2×(T-T2)/(1000×t2)+h×A×(T-T∞)；
wherein T is the preset surface temperature of the die body, T∞Is ambient temperature, T1Is the initial temperature of the mold, t1For a predetermined preheating period, A is the surface area of the mold body, C1Specific heat capacity of the mold body, M1Mass of the mold body, C2Specific heat capacity of the moulding material, M2For the mass of the moulding material, T2Initial temperature, t, of the material being shaped2A preset molding time duration;
q1 characterizes: if the mold body surface of the first half mold 100 needs to be heated to the preset surface temperature T within the preset preheating time period T1 by the heating pipes, the minimum total power required by the eight heating pipes is Q1;
q2 characterizes: during the molding process, if the molding material in the cavity half 101 needs to be heated and molded within the preset molding time period t2, the minimum total power required by the eight heating tubes is Q2.
2. The injection mold component of claim 1, wherein:
j ranges from 50 to 60.
3. The injection mold component of claim 2, wherein:
the value of j is 55.
4. The injection mold component of claim 1, wherein:
the number of each row of heating pipes is one; or the number of the heating pipes in each row is at least two, and the heating pipes in the same row are distributed along the second direction.
5. The injection mold component of claim 1, wherein:
the injection mould part is a complete injection mould; or
The injection mould part is a half mould for forming the injection mould, and the first mould cavity is a part of a forming mould cavity of the corresponding injection mould on the injection mould part.
6. The injection mold component of claim 1, wherein:
the first cavities have the same shape and size, and each B is equal to 1 and m +1x1Equal, each Bx2Are equal to, and Bx1=Bx2In the case where y ≠ 1 and y ≠ n +1, each Dy1Equal, each Dy2Are equal to, and Dy1=Dy2。
7. The injection mold component of claim 1, wherein:
B1/B21a value of 1.2 to 1.5; and/or, D1/D21Has a value of 1.2 to 1.5.
8. The injection mold component of any of claims 1 to 7, wherein:
q takes the value max { Q1，Q21.2 to 1.6 times.
9. The heating pipe power design method of the injection mould component is characterized in that:
using the injection mold part of claim 8;
the design method comprises the following steps:
firstly, calculating the total power Q of a plurality of heating pipes;
then the power of each heating tube is calculated respectively.
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