CN115990979A - Equal-stroke double-layer flow channel flow dividing plate and manufacturing method thereof - Google Patents
Equal-stroke double-layer flow channel flow dividing plate and manufacturing method thereof Download PDFInfo
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- CN115990979A CN115990979A CN202310289524.6A CN202310289524A CN115990979A CN 115990979 A CN115990979 A CN 115990979A CN 202310289524 A CN202310289524 A CN 202310289524A CN 115990979 A CN115990979 A CN 115990979A
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Abstract
The invention discloses an equal-stroke double-layer runner flow dividing plate and a manufacturing method thereof, wherein a glue inlet hole and eight glue dividing holes are formed in a glue inlet surface of the equal-stroke double-layer runner flow dividing plate, 24 glue outlet holes which are arranged in a matrix are formed in a glue outlet surface of the flow dividing plate, the glue inlet holes are communicated with the glue dividing holes through upper-layer runners formed in the flow dividing plate, each glue dividing hole is communicated with 3 glue outlet holes through lower-layer runners formed in the flow dividing plate, the upper-layer runners are communicated with the lower-layer runners through the glue dividing holes, and the strokes of plastic melt entering the upper-layer runners from the glue inlet holes through the glue dividing holes and the lower-layer runners to the glue outlet holes are equal. According to the invention, the splitter plate is of a double-layer structure, and the strokes from the glue inlet holes to the glue outlet holes are equal, so that the parameters of plastic melt ejected from the glue outlet holes are consistent, the uniformity of a final product is ensured, the glue outlets are more, and the injection molding efficiency is high.
Description
Technical Field
The invention relates to an injection mold accessory, in particular to an equal-stroke double-layer runner flow dividing plate and a manufacturing method thereof.
Background
The medicinal bottle cap comprises an aluminum cap and a plastic cap. In order to improve efficiency and reduce cost when producing plastic covers, a plurality of plastic covers are generally injection molded simultaneously by adopting a multi-cavity mold. In order to simultaneously inject the plastic melt into the cavities of a plurality of plastic cover molds, a splitter plate needs to be added in front of the plastic cover molds. The splitter plate is also called a hot runner splitter plate, is a central part of a hot runner system, and has the functions of distributing plastic melt transmitted by a main runner to all glue outlets through the runner, injecting the plastic melt into a die cavity of a plastic cover die from a glue injection port of the plastic cover die through a nozzle arranged at the glue outlet, and directly determining the cost and efficiency of producing the plastic cover by the number of the glue outlets of the splitter plate.
In the injection molding production process of the multi-cavity plastic cover mold, when the strokes from the glue inlet hole of the flow distribution plate to the glue outlet holes of the flow distribution plate are inconsistent, the parameters of plastic melt at the glue outlet holes are often inconsistent in terms of pressure, flow rate, temperature and the like, so that the plastic covers produced by injection molding in the same batch have larger density difference, the plastic covers are easy to produce hollows and lack materials to form waste products, and the uniformity of the quality of the products in the same batch cannot be ensured. Therefore, whether the strokes from the glue inlet hole to each glue outlet hole of the flow distribution plate are consistent or not directly determines the quality of the final injection molding product.
In order to ensure the quality of the final injection molding product, and also to improve the efficiency and reduce the production cost of the plastic cover, the splitter plate needs to be provided with as many glue outlet holes as possible, and meanwhile, the strokes from the glue inlet holes to the glue outlet holes can be kept consistent, but the existing double-layer runner splitter plate cannot achieve the problem. In the prior art, three layers or more injection molding runners are usually arranged on a splitter plate to split plastic melt step by step equivalently. But it is obvious that the way of arranging three layers or more injection molding flow channels on the flow distribution plate not only can increase the processing difficulty of the flow distribution plate, but also can reduce the bearing strength of the flow distribution plate.
Disclosure of Invention
The invention aims to provide an equal-stroke double-layer runner flow distribution plate and a manufacturing method thereof, so as to solve the problems that the existing double-layer flow distribution plate cannot reduce production cost and improve production efficiency while guaranteeing the quality of a final injection molding product.
The invention is realized in such a way that an equal-stroke double-layer runner splitter plate is provided with a glue inlet hole and eight glue dividing holes on a glue inlet surface of the splitter plate, 24 glue outlet holes which are arranged in a matrix are arranged on a glue outlet surface of the splitter plate, an upper layer runner and a lower layer runner which are parallel to a plate surface are arranged in the splitter plate, the glue inlet holes are communicated with the upper layer runner, the glue outlet holes are communicated with the lower layer runner, and the glue dividing holes are used for communicating the upper layer runner and the lower layer runner after a port is plugged;
the upper layer flow channel comprises a main flow channel arranged on a long-direction central line, two longitudinal flow channels arranged at the end parts of the main flow channel and perpendicularly intersected with the plane of the main flow channel, and four transverse flow channels arranged at the end parts of the longitudinal flow channels and perpendicularly intersected with the plane of the longitudinal flow channels; the glue inlet holes are formed in the middle of the main flow channel, and the partial glue holes are formed at two ends of each cross flow channel, so that the strokes from the glue inlet holes to the glue separation holes are equal;
the lower layer flow comprises eight T-shaped flow channels, the three ends of each T-shaped flow channel are respectively communicated with one glue outlet, the lower end of each glue dividing hole is communicated with the intersection point of one T-shaped flow channel, and the strokes from the glue dividing hole to the three glue outlets on the T-shaped flow channel communicated with the glue dividing hole are equal.
The main runner is formed by drilling and processing a short side wall of the flow distribution plate, and a processing section between the main runner from an opening end to a near-end longitudinal runner is plugged by a first plug after the runner is formed; the longitudinal flow channel is formed by drilling and processing the long-direction side wall of the flow distribution plate, and a processing section between the longitudinal flow channel from the opening end to the near-end cross flow channel is plugged by a first plug after the flow channel is drilled; the transverse flow channel is formed by drilling and processing the short side wall of the flow distribution plate, and a processing section between the transverse flow channel from the opening end to the near-end glue distribution hole is plugged by a first plug after the flow channel is formed.
The hole forming mode of the T-shaped runner is that firstly, a plurality of 45-degree inclined machining surfaces are formed on the side wall of the splitter plate, inclined drilling holes which form an angle of +/-45 degrees with the longitudinal center line of the splitter plate are formed by vertically drilling from the inclined cutting machining surfaces, after passing through one adjacent glue outlet hole and the glue distributing hole, the glue outlet holes are directly communicated to the other glue outlet holes which are distributed in an inclined way, and a T-shaped upper transverse duct is formed after a machining section from an opening end to the adjacent glue distributing hole is blocked by a first blocking plug; and the processing section from the opening end to the communicated glue dividing hole is plugged by a first plug to form a T-shaped lower straight pore canal.
And the processing section between the opening end of the glue dividing hole and the cross flow channel is plugged by a second plug after the glue dividing hole is formed. The first plugs and the second plugs are respectively arranged at the opening ends of the sub-runners and the opening ends of the glue distributing holes, so that a complete and closed runner can be formed from the glue inlet holes to the glue outlet holes.
Wavy milling grooves are formed in the glue inlet surface and the glue outlet surface of the flow distribution plate, and heating pipes are embedded in the milling grooves. The wavy heating pipes are arranged on the glue inlet surface and the glue outlet surface of the flow distribution plate, so that plastic melt in the flow distribution plate can be uniformly heated, and the plastic temperature parameters emitted by all the glue outlet holes are consistent.
The manufacturing method of the equal-stroke double-layer flow channel flow dividing plate comprises the following steps:
a. processing a plate body: processing the outer contour of a rectangular plate, flatly grinding the upper surface and the lower surface of the plate to obtain a rough part of the flow distribution plate, setting the upper surface of the rough part of the flow distribution plate as a glue inlet surface, and setting the lower surface of the rough part of the flow distribution plate as a glue outlet surface;
b. positioning of an opening position: positioning open holes of glue outlet holes on the glue outlet surface of the crude part of the flow distribution plate, wherein the number of the glue outlet holes is 24, and the glue outlet holes are distributed in a four-row six-column matrix; positioning the opening position of the glue inlet hole on the glue inlet surface of the rough part of the flow distribution plate; positioning an opening position of an upper-layer runner on the side wall of the flow distribution plate rough part; chamfering is carried out on the rough part of the flow distribution plate, a V-shaped groove is formed in the side wall of the rough part of the flow distribution plate, and the open pore position of the lower layer runner is positioned on the surface formed by chamfering and the groove surface of the V-shaped groove;
c. processing a flow channel of the flow distribution plate: b, processing a glue inlet hole, a glue distributing hole, a glue outlet hole, an upper-layer runner and a lower-layer runner on the rough part of the splitter plate according to the opening holes positioned in the step b;
d. processing of plugging screw threads: threads for installing a first plug are processed at the runner openings of the upper runner and the lower runner, and threads for installing a second plug are processed at the opening of the glue distributing hole;
e. installing a first plug and a second plug;
f. and (3) installing a heating pipe: and processing wavy milling grooves on the glue inlet surface and the glue outlet surface of the rough part of the flow distribution plate, and embedding heating pipes in the milling grooves.
Further, in the step b, the upper layer flow channel comprises a main flow channel, two longitudinal flow channels and four cross flow channels; the lower-layer flow channel comprises eight T-shaped flow channels, each T-shaped flow channel consists of an upper transverse pore channel and a lower straight pore channel, the upper transverse pore channel is perpendicularly intersected with the lower straight pore channel, and the upper transverse pore channel and the lower straight pore channel form an included angle of 45 degrees with the side wall of the crude part of the flow distribution plate;
further, in step c, the main runner is strung with two longitudinal runners which are arranged in parallel, each longitudinal runner is strung with two transverse runners which are arranged in parallel, each transverse runner is strung with two glue dividing holes, the glue dividing holes are communicated with the T-shaped runner at the intersection of the upper transverse runner and the lower straight runner, the upper transverse runner is communicated with two glue outlet holes, the lower straight runner is communicated with one glue outlet hole, and the strokes of plastic melt from the glue inlet to the main runner, the longitudinal runners, the transverse runners, the glue dividing holes and the T-shaped runners are all equal.
The equal-stroke double-layer runner flow dividing plate is arranged before plastic melt enters the multi-cavity plastic cover die and is used for equally dividing the plastic melt. According to the invention, the splitter plate is of a double-layer structure, and the strokes from the glue inlet hole to each glue outlet hole are equal, so that the plastic melt ejected from each glue outlet hole is consistent in pressure, flow speed, density and other parameters, the uniformity of a final product is ensured, and the hollow and material shortage of a plastic cover is avoided; the invention can simultaneously supply glue to a plurality of plastic cover mould cavities, and the plastic cover formed by injection molding has uniform quality and high yield.
The equal-stroke double-layer flow channel flow dividing plate has the following advantages:
1. the traditional double-layer flow distribution plate flow channel arrangement mode is changed, the number of glue outlets is greatly increased, and on the premise that the quality of a final injection molding product is ensured, the injection molding production efficiency is improved, and the production cost is reduced.
2. Compared with a splitter plate with three or more flow channels, the splitter plate has the advantages of low processing difficulty and high bearing pressure.
3. The flow distribution plate is integrally formed, so that the flow distribution plate is more convenient to install compared with an assembled flow distribution plate, can be matched with a multi-cavity plastic cover injection mold more tightly, and can avoid glue leakage in the plastic cover injection production process.
4. The wavy heating pipes are arranged on the glue inlet surface and the glue outlet surface of the flow distribution plate around the hole positions of the glue outlet holes, so that the plastic melt in the flow channel is heated more uniformly, the temperature of the plastic melt ejected from each glue outlet hole can be kept consistent, and the uniformity of the quality of the final product is further ensured.
Drawings
FIG. 1 is a schematic view of the internal flow channel structure of the present invention.
Fig. 2 is a schematic view of the structure of the adhesive feeding surface of the present invention.
Fig. 3 is a schematic view of the structure of the glue outlet surface of the present invention.
FIG. 4 isbase:Sub>A sectional view in the direction A-A of the present invention.
FIG. 5 is a B-B directional cross-sectional view of the present invention.
In the figure: 1. a glue inlet hole; 2. a glue separating hole; 3. a glue outlet hole; 4. a main flow passage; 5. a longitudinal flow passage; 6. a transverse flow channel; 7. an upper transverse duct; 8. a lower straight duct; 9. a first plug; 10. a second plug; 11. and (5) heating the pipe.
Detailed Description
As shown in the figure, a glue inlet hole 1 and eight glue outlet holes 2 are formed in the glue inlet surface of the flow distribution plate, 24 glue outlet holes 3 which are arranged in an array are formed in the glue outlet surface of the flow distribution plate, the glue inlet holes 1 are communicated with the glue outlet holes 2 through upper-layer flow passages formed in the flow distribution plate, each glue outlet hole 2 is communicated with the 3 glue outlet holes 3 through lower-layer flow passages formed in the flow distribution plate, and the upper-layer flow passages are communicated with the lower-layer flow passages through the glue outlet holes 2; on the upper layer runner, the strokes from the glue inlet hole 1 to each glue dividing hole 2 are equal; on the lower layer runner, the strokes from the glue distributing holes 2 to the glue outlet holes 3 communicated with the glue distributing holes are equal.
The upper layer flow channel comprises a main flow channel 4, two longitudinal flow channels 5 and four cross flow channels 6; the glue inlet hole 1 is communicated with the main runner 4, the main runner 4 is communicated with two longitudinal runners 5 in series, each longitudinal runner 5 is communicated with two cross runners 6 in series, and each cross runner 6 is communicated with two glue distributing holes 2. The paths from the glue inlet hole 1 to each glue distributing hole 2 through the main flow channel 4, the longitudinal flow channel 5 and the transverse flow channel 6 are similar and have equal distances. Wherein, the main runner 4, the longitudinal runner 5 and the transverse runner 6 are all made by punching inwards from the side wall of the flow dividing plate, the opening ends of the main runner 4, the longitudinal runner 5 and the transverse runner 6 are also provided with a first plug 9, and the opening end of the glue dividing hole 2 is provided with a second plug 10.
Referring to fig. 5, the t-shaped flow channel includes an upper transverse channel 7 and a lower straight channel 8, the upper transverse channel 7 and the lower straight channel 8 are perforated inwards from the side wall of the flow dividing plate at ±45°, and the upper transverse channel 7 and the lower straight channel 8 intersect at the glue dividing hole 2. The upper transverse hole channel 7 is communicated with two glue outlet holes 3, the glue outlet holes 3 on the upper transverse hole channel 7 are symmetrically arranged by taking the glue outlet holes 2 as the center, the lower straight hole channel 8 is communicated with one glue outlet hole 3, and the distance from the glue outlet hole 3 on the lower straight hole channel 8 to the glue outlet hole 2 is equal to the distance from the glue outlet hole 3 on the upper transverse hole channel 7 to the glue outlet hole 2. Wherein, the opening ends of the upper transverse pore canal 7 and the lower straight pore canal 8 are respectively provided with a first plug 9.
The first plug 9 is used for plugging the opening of each sub-runner, and the second plug 10 is used for plugging the opening of the glue distributing hole 2, so that a set of complete and closed plastic melt double-layer runners are formed from the glue inlet hole 1 to the glue outlet hole 3. Preferably, sealing rings are arranged between the first plug 9 and the flow dividing plate and between the second plug 10 and the flow dividing plate.
Wavy milling grooves are formed in the glue inlet surface and the glue outlet surface of the flow distribution plate, heating pipes 11 are embedded in the washing grooves, and the heating pipes 11 are used for uniformly heating plastic in the flow distribution plate.
The manufacturing method of the equal-stroke double-layer flow channel flow dividing plate comprises the following steps:
(1) Machining of rough parts of splitter plates
Cutting a rectangular blank on a plate, wherein the thickness of the plate depends on the size of a melt adhesive extruder and the pressure required to be born by a splitter plate, horizontally grinding the side walls of the rectangular blank, enabling the opposite side walls to be parallel to each other, horizontally grinding the upper surface and the lower surface of the rectangular blank, guaranteeing the parallelism between the upper surface and the lower surface of the rectangular blank while guaranteeing the flatness of each surface to be in a specified range, obtaining a splitter plate rough part, setting one surface of the splitter plate rough part as a glue inlet surface, and setting the other surface of the splitter plate as a glue outlet surface.
(2) Positioning the tapping positions of the glue inlet 1, the glue separating 2, the glue outlet 3 and the upper layer flow
And positioning the opening positions of the glue outlet holes 3 on the glue outlet surface of the crude part of the flow distribution plate, wherein the opening positions of the glue outlet holes 3 are uniformly distributed on the crude part of the flow distribution plate in a rectangular array of four rows and six columns. The glue outlet surface is divided into four areas, six opening holes of the glue outlet holes 3 are formed in each area, and the opening holes of the glue outlet holes 3 are arranged in two rows and three columns in each area. And drawing two T-shaped lines in each area, wherein each T-shaped line comprises a third line and a fourth line, the third line and the fourth line are mutually perpendicular, and the third line and the fourth line form an included angle of 45 degrees with the side wall of the thick part of the splitter plate. The third line is connected with the opening positions of the two glue outlet holes 3, the fourth line is connected with the opening position of one glue outlet hole 3, the extension line of the third line points to the opposite angle of the thick part of the splitter plate, and the extension line of the fourth line points to the middle part of the side wall of the thick part of the splitter plate. The distances from the opening positions of the three glue outlet holes 3 of the T-shaped circuit to the intersection point of the third circuit and the fourth circuit are equal. The eight T-shaped lines are the projections of the lower-layer runners of the flow distribution plate on the glue inlet surface. And projecting the intersection point of the third line and the fourth line to the glue inlet surface of the crude part of the splitter plate to position the opening position of the glue distributing hole 2.
And drawing a projection diagram of the upper-layer runner on the glue inlet surface of the crude part of the flow distribution plate, wherein the projection diagram comprises a main line, two first lines and four second lines. The main circuit is connected with two parallel first circuits, each first circuit is connected with two parallel second circuits, and each second circuit is connected with two opening holes of the glue separating holes 2 in series. The method comprises the steps of positioning the opening positions of the glue inlet holes 1 on a main line, wherein the distances from the opening positions of the glue inlet holes 1 to two first lines are equal, the distances from the intersection point of the main line and the first lines to two intersection points of the first line and the second line are equal, and the distances from the intersection point of the first line and the second line to the opening positions of two glue distributing holes 2 on the second line are equal. And positioning open holes of all sub-runners of the upper-layer runner on the side wall of the crude part of the flow distribution plate through a line drawn on the glue inlet surface of the crude part of the flow distribution plate by the main line, the first line and the second line. The open holes of each sub-runner of the upper layer flow are positioned on the same horizontal plane and are close to the glue inlet surface.
(3) Open pore position for positioning lower runner
Chamfering is carried out on the rough part of the flow distribution plate, a plurality of V-shaped grooves are formed in the side wall of the rough part of the flow distribution plate, and the extension lines of the third line and the fourth line drawn on the glue outlet surface are perpendicular to the chamfer surface or the groove surface of the V-shaped grooves. And positioning the open holes of the sub-runners of the lower-layer runner on the chamfer surface and the groove surface of the V-shaped groove, wherein the open holes of the sub-runners of the lower-layer runner are positioned on the same horizontal plane and are close to the glue outlet surface.
(4) Deep hole processing glue inlet 1, glue separating 2, glue outlet 3, upper runner and lower runner
And (3) vertically drilling holes from the opening positions of each sub-runner of the upper-layer runner and the lower-layer runner by comparing the projection of the upper-layer runner on the glue inlet surface and the projection of the lower-layer runner on the glue outlet surface, and finishing the main runner 4, the longitudinal runner 5, the cross runner 6, the upper cross duct 7 and the lower straight duct 8. And (3) vertically drilling holes from the opening positions of the glue inlet hole 1, the glue outlet hole 2 and the glue outlet hole 3, and finishing the glue inlet hole 1, the glue outlet hole 2 and the glue outlet hole 3, so that the glue inlet hole 1 is communicated with the main runner 4, the glue outlet hole 2 is communicated with the transverse runner 6 and the T-shaped runner, and the T-shaped runner is communicated with the corresponding glue outlet hole 3.
(5) Processing plug threads
Tapping openings of each sub-runner of the upper runner and the lower runner, and processing mounting threads of the first plug 9; tapping the opening of the glue distributing hole 2, and processing the mounting thread of the second plug 10.
(6) Wave-shaped milling groove
And the wave-shaped milling grooves are formed in the glue inlet surface and the glue outlet surface of the rough part of the flow distribution plate around the hole positions of the glue outlet holes 3.
(7) Heat treatment of rough parts of splitter plates
Quenching and tempering heat treatment is carried out on the rough part of the flow distribution plate, so that the hardness and the wear resistance of the rough part of the flow distribution plate are enhanced.
(8) Mounting heating pipe 11
The heating pipe 11 is sleeved in the copper pipe, the copper pipe sleeved with the heating pipe 11 is embedded in the wavy milling groove, and the copper pipe is subjected to flat grinding treatment.
(9) Mounting plug
The first plug 9 is arranged at the opening ends of the main runner 4, the longitudinal runner 5, the cross runner 6, the upper cross runner 7 and the lower straight runner 8, and the second plug 10 is arranged at the opening end of the glue distributing hole 2, so that a set of plastic melt runner with complete sealing is formed from the glue inlet hole 1 to the glue outlet hole 3. Copper sealing rings are arranged between the first plug 9 and the crude part of the flow distribution plate and between the second plug 10 and the crude part of the flow distribution plate.
In the invention, the paths from the glue inlet hole 1 to each glue outlet hole 3 are similar and have equal strokes, when the plastic melt enters the flow dividing plate from the glue inlet hole 1 and is split by the upper layer flow path and the lower layer flow path, the plastic melt ejected from each glue outlet hole 3 can keep consistent in pressure and flow speed, and the heating pipe 11 is used for uniformly heating the plastic melt so that the temperature of the ejected plastic melt can also keep consistent, therefore, the split plastic melt can keep consistent in pressure, flow speed, temperature, density and other parameters when entering each cavity of the plastic cover die, and the uniformity of the final injection molding product is ensured. The invention adopts integrated forming, has high bearing pressure, no glue leakage and multiple glue outlets, and has stable structure and convenient installation.
Claims (7)
1. The equal-stroke double-layer runner splitter plate is characterized in that a glue inlet hole and eight glue dividing holes are formed in a glue inlet surface of the splitter plate, 24 glue outlet holes which are arranged in a matrix are formed in a glue outlet surface of the splitter plate, an upper runner and a lower runner which are parallel to a plate surface are formed in the splitter plate, the glue inlet holes are communicated with the upper runner, the glue outlet holes are communicated with the lower runner, and the glue dividing holes are used for communicating the upper runner with the lower runner after ports are plugged;
the upper layer flow channel comprises a main flow channel arranged on a long-direction central line, two longitudinal flow channels arranged at the end parts of the main flow channel and perpendicularly intersected with the plane of the main flow channel, and four transverse flow channels arranged at the end parts of the longitudinal flow channels and perpendicularly intersected with the plane of the longitudinal flow channels; the glue inlet holes are formed in the middle of the main flow channel, and the partial glue holes are formed at two ends of each cross flow channel, so that the strokes from the glue inlet holes to the glue separation holes are equal;
the lower layer flow comprises eight T-shaped flow channels, the three ends of each T-shaped flow channel are respectively communicated with one glue outlet, the lower end of each glue dividing hole is communicated with the intersection point of one T-shaped flow channel, and the strokes from the glue dividing hole to the three glue outlets on the T-shaped flow channel communicated with the glue dividing hole are equal.
2. The equal-stroke double-runner manifold as recited in claim 1, wherein the primary runner is formed by drilling a short side wall of the manifold, and a processing section between the primary runner and the proximal longitudinal runner from the opening end is plugged by a first plug after the runner is formed; the longitudinal flow channel is formed by drilling and processing the long-direction side wall of the flow distribution plate, and a processing section between the longitudinal flow channel from the opening end to the near-end cross flow channel is plugged by a first plug after the flow channel is drilled; the transverse flow channel is formed by drilling and processing the short side wall of the flow distribution plate, and a processing section between the transverse flow channel from the opening end to the near-end glue distribution hole is plugged by a first plug after the flow channel is formed.
3. The equal-stroke double-layer runner splitter plate according to claim 2, wherein the hole forming mode of the T-shaped runner is that a plurality of 45-degree inclined processing surfaces are firstly formed on the side wall of the splitter plate, inclined drilling holes which form an angle of +/-45 degrees with the longitudinal center line of the splitter plate are vertically drilled from the inclined cutting processing surfaces, after passing through one glue outlet hole and the glue distributing holes which are adjacent, the glue outlet holes are directly connected to the other glue outlet holes which are distributed in an inclined way, and after a processing section from an opening end to the adjacent glue distributing holes is blocked by a first blocking plug, a T-shaped upper transverse duct is formed; and the processing section from the opening end to the communicated glue dividing hole is plugged by a first plug to form a T-shaped lower straight pore canal.
4. The equal-stroke double-channel flow dividing plate according to any one of claims 1 to 3, wherein a processing section between the opening end of the glue dividing hole and the cross flow channel is plugged by a second plug after the glue dividing hole is formed.
5. The equal-stroke double-channel flow dividing plate according to claim 1, wherein the glue inlet surface and the glue outlet surface of the flow dividing plate are provided with wavy milling grooves, and heating pipes are embedded in the milling grooves.
6. The manufacturing method of the equal-stroke double-layer flow channel flow dividing plate is characterized by comprising the following steps of:
a. processing a plate body: processing the outer contour of a rectangular plate, flatly grinding the upper surface and the lower surface of the plate to obtain a rough part of the flow distribution plate, setting the upper surface of the rough part of the flow distribution plate as a glue inlet surface, and setting the lower surface of the rough part of the flow distribution plate as a glue outlet surface;
b. positioning of an opening position: positioning open holes of glue outlet holes on the glue outlet surface of the crude part of the flow distribution plate, wherein the number of the glue outlet holes is 24, and the glue outlet holes are distributed in a four-row six-column matrix; positioning the opening position of the glue inlet hole on the glue inlet surface of the rough part of the flow distribution plate; positioning an opening position of an upper-layer runner on the side wall of the flow distribution plate rough part; chamfering is carried out on the rough part of the flow distribution plate, a V-shaped groove is formed in the side wall of the rough part of the flow distribution plate, and the open pore position of the lower layer runner is positioned on the surface formed by chamfering and the groove surface of the V-shaped groove;
c. processing a flow channel of the flow distribution plate: b, processing a glue inlet hole, a glue distributing hole, a glue outlet hole, an upper-layer runner and a lower-layer runner on the rough part of the splitter plate according to the opening holes positioned in the step b;
d. processing of plugging screw threads: threads for installing a first plug are processed at the runner openings of the upper runner and the lower runner, and threads for installing a second plug are processed at the opening of the glue distributing hole;
e. installing a first plug and a second plug;
f. and (3) installing a heating pipe: and processing wavy milling grooves on the glue inlet surface and the glue outlet surface of the rough part of the flow distribution plate, and embedding heating pipes in the milling grooves.
7. The method for manufacturing an equal-stroke double-channel flow dividing plate according to claim 6, wherein,
in the step b, the upper layer flow comprises a main flow channel, two longitudinal flow channels and four cross flow channels; the lower-layer flow channel comprises eight T-shaped flow channels, each T-shaped flow channel consists of an upper transverse pore channel and a lower straight pore channel, the upper transverse pore channel is perpendicularly intersected with the lower straight pore channel, and the upper transverse pore channel and the lower straight pore channel form an included angle of 45 degrees with the side wall of the crude part of the flow distribution plate;
in step c, two longitudinal runners are arranged in parallel in series, each longitudinal runner is connected with two transverse runners which are arranged in parallel in series, each transverse runner is connected with two glue distributing holes, the glue distributing holes are communicated with the T-shaped runner at the intersection of the upper transverse runner and the lower straight runner, the upper transverse runner is communicated with two glue outlet holes, the lower straight runner is communicated with one glue outlet hole, and the strokes of plastic melt from the glue inlet to the glue outlet through the main runner, the longitudinal runners, the transverse runners, the glue distributing holes and the T-shaped runners are equal.
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| CN201970450U (en) * | 2011-03-24 | 2011-09-14 | 十堰东森汽车密封件有限公司 | Cold runner for air valve oil seal injection moulding |
| CN207140240U (en) * | 2017-08-25 | 2018-03-27 | 德玛克控股集团有限公司 | The flow passage plate structure of 128 chamber hot flow path PET bottle embryo moulds |
| CN208484155U (en) * | 2017-11-28 | 2019-02-12 | 无锡绿缘汽车零部件有限公司 | A kind of type concealed glue inlet structure |
| CN112677422A (en) * | 2019-10-17 | 2021-04-20 | 东和株式会社 | Method for producing resin molded article and resin molding apparatus |
| KR20210045922A (en) * | 2019-10-17 | 2021-04-27 | 토와 가부시기가이샤 | Resin molded product manufacturing method and resin molding apparatus |
| CN214239303U (en) * | 2020-12-28 | 2021-09-21 | 佛山市百进一精密机械有限公司 | Injection mold of bottle base |
| CN217476498U (en) * | 2022-06-13 | 2022-09-23 | 厦门豪特维思科技有限公司 | Multi-point side glue opening hot runner |
| CN218477062U (en) * | 2022-10-17 | 2023-02-14 | 东莞市德浦热流道科技有限公司 | Splitter plate |
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| CN115990979B (en) | 2023-05-23 |
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