CN117103580A - Opposite circulation type injection mold - Google Patents
Opposite circulation type injection mold Download PDFInfo
- Publication number
- CN117103580A CN117103580A CN202311184440.2A CN202311184440A CN117103580A CN 117103580 A CN117103580 A CN 117103580A CN 202311184440 A CN202311184440 A CN 202311184440A CN 117103580 A CN117103580 A CN 117103580A
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- Prior art keywords
- water
- thermal compensation
- convection
- strips
- injection mold
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- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims description 11
- 230000001464 adherent effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 27
- 230000000694 effects Effects 0.000 description 19
- 230000008859 change Effects 0.000 description 16
- 238000001125 extrusion Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application discloses a counter-circulation type injection mold applied to the field of injection molds, wherein the injection mold is provided with a counter-circulation pipe group, when water cooling is performed after injection molding, condensed water can be injected from two sides, so that the condensed water can cool the injection molding part in a two-way manner, the temperature difference between a water inlet and a water outlet of two parts on the injection mold is greatly reduced, compared with the prior art, the water cooling efficiency and the uniformity of cooling the injection molding part can be improved, the quality of a finished product of the injection molding part is further effectively improved, in addition, the arrangement of a plurality of thermal compensation strips is matched, the water inlet sides and the water outlet sides of two convection pipes are opposite, meanwhile, the temperature compensation of the condensed water in the two convection pipes is realized through the cross contact of the plurality of thermal compensation strips, the heat transfer balance is performed, the uniformity of the temperature distribution of the condensed water outside a mold cavity is further effectively improved, and the cooling uniformity is further improved.
Description
Technical Field
The application relates to the field of injection molds, in particular to a counter-circulation injection mold.
Background
Injection molding, also known as injection molding, is a method of injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation in operation, multiple patterns, various shapes, large size, accurate product size, easy updating of the product, and capability of forming parts with complex shapes, and is suitable for the field of mass production, products with complex shapes and other molding processing.
For accelerating the cooling shaping speed of injection molding, generally through the cooling mode of water-cooling, the cooling of moulding plastics in the acceleration die cavity, however, in prior art when letting in comdenstion water cooling, just enter into the water temperature of water in the condenser pipe and reduce, and about to the temperature of the water of discharging is higher relatively, has great difference in temperature between the two, leads to whole injection molding surface cooling homogeneity to proofread relatively worse, influences the quality of injection molding finished product.
Disclosure of Invention
The application aims to improve the uniformity of injection molding during water cooling and cooling, and improve the quality of injection molding finished products, compared with the prior art, the application provides a counter-circulation injection mold, which comprises a lower mold plate and a lower mold plate connected at the upper end of the lower mold plate through screws, wherein a cooling cavity is enclosed between the lower mold plate and the lower mold plate, the cooling cavity is correspondingly matched with the mold cavity, the cooling cavity is positioned outside the mold cavity, the outer ends of the lower mold plate and the lower mold plate are fixedly connected with a left water pipe and a right water pipe, the ends of the left water pipe and the right water pipe, which are close to the cooling cavity, are fixedly connected with water pipes, the outer part of the inner wall of the cooling cavity, which is positioned on the lower mold plate, is fixedly wound with a counter-circulation pipe group, the counter-circulation pipe group comprises two convection pipes, and the two ends of the convection pipe are respectively fixed and communicated with the water pipes on the lower mold plate and the lower mold plate.
Through setting up to circulation nest of tubes, when carrying out the water-cooling after moulding plastics, can follow the operation of injecting the comdenstion water, make the comdenstion water can carry out two-way cooling to the injection molding, make the difference in temperature of the water inlet of two parts and delivery port part on the injection mold reduce by a wide margin, compare in prior art, can improve the efficiency of water-cooling and to the homogeneity of injection molding cooling, and then effectively improve the quality of injection molding finished product, in addition, cooperation a plurality of thermal compensation strip's setting, can make two convection tube water inlet side and play water side relative, simultaneously through the cross contact of a plurality of thermal compensation strip, realize the compensation of two convection intraductal comdenstion water temperature, carry out heat transfer equilibrium, and then effectively improve the homogeneity of comdenstion water outside the die cavity temperature distribution, further improve refrigerated homogeneity.
Further, by taking the longitudinal central line of the lower die plate as a boundary, two left water pipes or two right water pipes positioned on the same side, one of which is used for water inflow and the other of which is used for water drainage, namely, the left water pipe and the right water pipe positioned on the lower die plate are simultaneously positioned, one of which is a water outflow pipe, the other of which is a water inflow pipe, and the left water pipe and the right water pipe on the lower die plate are also used as water inflow pipes.
Further, the convection tube comprises a closing-in section fixedly connected with the two water guide tubes and an adherence tube fixedly connected between the two closing-in sections, the adherence tube comprises an adherence drum layer fixedly connected with the end parts of the two closing-in sections and a water change layer fixedly inlaid on the two end parts of the adherence drum layer, which are close to the two adjacent convection tubes, and the water change layer is of an elastic sealing structure.
Further, the end parts of the two adjacent convection pipes, which are close to each other, are not in contact, a convection gap is formed between the two convection pipes, a certain gap is provided for heat compensation exchange between the two convection pipes, the water inlet speed is controlled, the water change layer protrudes towards two sides and contacts with the adjacent water change layer, the heat exchange of condensed water in the two convection pipes is completed, the section of the wall-attached pipe is semicircular, the flat surface of the wall-attached pipe is attached to the inner wall of the cooling cavity, the contact area between the wall-attached pipe and the inner wall of the lower die plate is large, and the heat absorption effect on an injection molding piece is better.
Further, a plurality of evenly distributed thermal compensation strips are fixedly connected to the water change layer and communicated with the inside of the wall-attached pipe, the thermal compensation strips on the two adjacent convection pipes are distributed in a staggered and crossed mode, when condensate water is filled, the thermal compensation strips are expanded under the action of the condensate water, at the moment, the two adjacent thermal compensation strips are close to each other and are in contact with each other, heat can be quickly exchanged, temperature compensation is conducted, the temperature distribution of the condensate water outside the injection molding part is uniform, and the temperature reduction is more uniform.
Further, the closing-in section and the wall-attached drum layer are of hard shaping structures, so that the whole convection pipe framework is shaped relatively, collapse is not easy to occur under the deformation force of the water change layer and the thermal compensation strip, the water change layer is of a flexible sealing structure, and the convection pipe framework is convenient to adapt to certain deformation of the thermal compensation strip.
Further, the length of the thermal compensation bars is consistent with the width of the convection gap, the interval between two adjacent thermal compensation bars on the same convection tube is not more than three times of the width of the thermal compensation bars, when the thermal compensation bars on the two convection tubes are inserted into each other, the interval between the two thermal compensation bars is not easy to be too large, and after the condensed water is filled for deformation, the contact area between the two thermal compensation bars is larger, so that the heat exchange effect is better.
Further, the middle part of one end that two adjacent thermal compensation strips are close to each other all is equipped with wraps up in the ball piece, wraps up in the ball piece and wraps up in the ball piece department of wrapping up in the ball of ball piece and form the indent layer that is located the thermal compensation strip, and the oral area on indent layer is outside the thermal compensation strip, when filling the comdenstion water, thermal compensation strip expansion in-process makes the thermal compensation ball by the extrusion and go out, and two thermal compensation strips that are close to each other at this moment are mutual extrusion contact, makes a plurality of thermal exchange ball parts naked terminal surface imbeds in another wraps up in the ball piece, and then makes the heat transfer effect better.
Further, the thermal compensation strip and the wrapping ball sheet are of elastic sealing structures, and the heat exchange ball is made of high heat conduction materials, so that heat conduction is facilitated, and the heat exchange effect is better.
Further, the length of the wrapping ball piece along the trend of the thermal compensation strip is not less than half of the length of the thermal compensation strip, the length of the wrapping ball piece is too large, heat exchange balls on two sides are not easy to embed into another thermal compensation strip, the length is too small, the number of the heat exchange balls which are mutually embedded is small, the distribution range is small, and the effect of improving the heat exchange effect is not obvious.
Compared with the prior art, the application has the advantages that:
(1) Through setting up to circulation nest of tubes, when carrying out the water-cooling after moulding plastics, can follow the operation of injecting the comdenstion water, make the comdenstion water can carry out two-way cooling to the injection molding, make the difference in temperature of the water inlet of two parts and delivery port part on the injection mold reduce by a wide margin, compare in prior art, can improve the efficiency of water-cooling and to the homogeneity of injection molding cooling, and then effectively improve the quality of injection molding finished product, in addition, cooperation a plurality of thermal compensation strip's setting, can make two convection tube water inlet side and play water side relative, simultaneously through the cross contact of a plurality of thermal compensation strip, realize the compensation of two convection intraductal comdenstion water temperature, carry out heat transfer equilibrium, and then effectively improve the homogeneity of comdenstion water outside the die cavity temperature distribution, further improve refrigerated homogeneity.
(2) The arrangement ensures that the low-temperature condensed water of the water inlet part and the high-temperature condensed water of the water outlet part can be subjected to temperature compensation transmission, thereby effectively ensuring the uniformity of temperature distribution in the two convection tubes.
(3) The end parts of the two adjacent convection pipes, which are close to each other, are not in contact, a convection gap is formed between the two convection pipes, heat compensation exchange between the two convection pipes is provided, a certain gap is provided, the water inlet speed is controlled, the water change layers are protruded towards two sides and are in contact with the adjacent water change layers, heat exchange of condensed water in the two convection pipes is completed, the sections of the wall-attached pipes are semicircular, and the flat surfaces of the wall-attached pipes are attached to the inner wall of the cooling cavity, so that the contact area between the wall-attached pipes and the inner wall of the lower die plate is larger, and the heat absorption effect on injection molding pieces is better.
(4) The water becomes a plurality of evenly distributed's of fixed connection thermal compensation strip on the layer, thermal compensation strip communicates with each other with the adherence intraductal, and a plurality of thermal compensation strips on two adjacent convection tubes dislocation alternately distribute each other, when filling the comdenstion water, make thermal compensation strip inflation under the comdenstion water effect, two adjacent thermal compensation strips are close to each other and contact this moment, and then can realize thermal rapid exchange, carries out temperature compensation, makes the outer comdenstion water temperature distribution of injection molding comparatively even, and the cooling is more even.
(5) The closing-in section and the wall-attaching drum layer are both of hard shaping structures, so that the whole convection pipe framework is shaped relatively, collapse is not easy to occur under the deformation force of the water change layer and the thermal compensation strip, the water change layer is of a flexible sealing structure, and the thermal compensation strip is convenient to adapt to certain deformation.
(6) The length of the thermal compensation strips is consistent with the width of the convection gap, the interval between two adjacent thermal compensation strips on the same convection tube is not more than three times of the width of the thermal compensation strips, when the thermal compensation strips on the two convection tubes are inserted into each other, the interval between the two thermal compensation strips is not easy to be too large, and after the condensed water is filled for deformation, the contact area between the two thermal compensation strips is larger, so that the heat exchange effect is better.
(7) The middle part of one end that two adjacent thermal compensation strips are close to each other all is equipped with wraps up in the ball piece, wraps up in the ball piece and wraps up in the ball piece department of wrapping up in the ball of ball piece and form the indent layer that has a plurality of heat exchange balls, and the oral area on indent layer is outside towards the thermal compensation strip, when filling the comdenstion water, thermal compensation strip expansion in-process makes the heat exchange ball by extrusion and go out, and two thermal compensation strips that are close to each other at this moment are mutual extrusion contact, makes a plurality of heat exchange balls part naked terminal surface imbeds another wrap up in the ball piece, and then makes the heat transfer effect better.
(8) The heat compensation strip and the wrapping ball sheet are of elastic sealing structures, and the heat exchange ball is made of high-heat-conductivity materials, so that heat conduction is facilitated, and the heat exchange effect is better.
(9) The length of the wrapping ball piece along the trend of the thermal compensation strip is not less than half of the length of the thermal compensation strip, the length of the wrapping ball piece is too large, the heat exchange balls on two sides are not easy to embed into the other thermal compensation strip, the length is too small, the number of the heat exchange balls embedded into each other is small, the distribution range is small, and the effect of improving the heat exchange effect is not obvious.
Drawings
FIG. 1 is a schematic elevational view in cross-section of the present application;
FIG. 2 is a schematic diagram of the front face of the present application;
FIG. 3 is a schematic view of a partial cross-section of a lower mold plate of the present application;
FIG. 4 is a schematic view of the structure of an end portion of a convection tube according to the present application;
FIG. 5 is a schematic view showing the structure of the opposite circulation tube set before and after the injection of condensed water;
FIG. 6 is a schematic view of a section of an adherent tube portion of the present application;
FIG. 7 is a schematic view of two adjacent convection tube portions of the present application;
FIG. 8 is a schematic diagram of a portion of the convection tube after two-way filling with condensate water according to the present application;
FIG. 9 is a schematic diagram of the structure at B in FIG. 8;
FIG. 10 is a schematic diagram showing the structure of the thermal compensation strip according to the present application after the condensed water is injected.
The reference numerals in the figures illustrate:
the upper die plate 11, the lower die plate 12, the lower die plate 13, the cooling cavity 2, the material injection port 3, the left water pipe 41, the right water pipe 42, the water guide pipe 43, the convection pipe 5, the closing-in section 51, the 521 clinging drum layer, the 522 water change layer, the 6 heat compensation strip, the 61 heat exchange ball and the 62 wrapping ball sheet.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present application are included in the protection scope of the present application.
Example 1:
the application discloses a counter circulation injection mold, please refer to fig. 1-2, comprising a base, a lower mold arranged on the base and an upper mold plate 11 arranged on the lower mold, wherein a mold cavity is formed between the lower mold and the upper mold plate 11, a material injection port 3 is cut in the middle of the upper mold plate 11, the material injection port 3 is communicated with the mold cavity, the lower mold comprises a lower mold plate 12 and a lower mold plate 13 connected with the upper end of the lower mold plate 12 through screws, a cooling cavity 2 is enclosed between the lower mold plate 13 and the lower mold plate 12, the cooling cavity 2 is correspondingly matched with the mold cavity, and the cooling cavity 2 is positioned outside the mold cavity, the left water pipe 41 and the right water pipe 42 are fixedly connected to the outer ends of the lower die plate 12 and the lower die plate 13, and the two left water pipes 41 or the two right water pipes 42 positioned on the same side are used as water inlet and the other is used as water outlet, namely the left water pipe 41 and the right water pipe 42 positioned on the lower die plate 12 are simultaneously used as water outlet and the other is water inlet, and the left water pipe 41 and the right water pipe 42 on the lower die plate 13 are also used as water inlet.
Referring to fig. 3 and 5, the ends of the left water pipe 41 and the right water pipe 42 near the cooling cavity 2 are fixedly connected with a water guide pipe 43, the inner wall of the cooling cavity 2 on the lower mold plate 13 is fixedly wound with a counter circulation pipe group, the counter circulation pipe group comprises two convection pipes 5, two ends of the convection pipes 5 are respectively fixed and communicated with the water guide pipe 43 on the lower mold plate 12 and the lower mold plate 13, the ends of the adjacent two convection pipes 5 are not contacted with each other, a convection gap is formed between the two convection pipes 5, a certain gap is provided for heat compensation exchange between the two convection pipes 5, the water inlet speed is controlled, the water change layers 522 are protruded towards two sides and are contacted with the adjacent water change layers 522, the heat exchange of condensed water in the two convection pipes 5 is completed,
referring to fig. 4, the convection tube 5 includes a closing-in section 51 fixedly connected with the two water guide tubes 43 and an adherence tube fixedly connected between the two closing-in sections 51, the section of the adherence tube is semicircular, and the flat surface of the adherence tube is adhered to the inner wall of the cooling cavity 2, so that the contact area with the inner wall of the lower die plate 12 is larger, and the heat absorption effect on the injection molding piece is better. The wall-attached pipe comprises wall-attached drum layers 521 fixedly connected with the ends of the two closing-in sections 51 and water-changing layers 522 fixedly inlaid on the two ends of the wall-attached drum layers 521, which are close to the two adjacent convection pipes 5, wherein the water-changing layers 522 are of elastic sealing structures.
Through setting up to circulation nest of tubes, when carrying out water-cooling after moulding plastics, can follow the operation of injecting the comdenstion water, make the comdenstion water can carry out two-way cooling to the injection molding, make the difference in temperature of the water inlet of two parts on the injection mold and delivery port part reduce by a wide margin, compare in prior art, can improve the efficiency of water-cooling and to the homogeneity of injection molding cooling, and then effectively improve the quality of injection molding finished product.
As shown in fig. 5, in this embodiment, when the condensed water is introduced, under the extrusion action of the condensed water, the water-changing layers 522 on two adjacent convection tubes 5 extend outwards to deform until the two convection tubes 5 are in mutual extrusion contact, so that the condensed water can exchange heat and compensate temperature, and the temperature difference is reduced.
Example 2:
referring to fig. 6, a plurality of uniformly distributed thermal compensation strips 6 are fixedly connected to the water-change layer 522, the thermal compensation strips 6 are communicated with the inside of the wall-attached pipe, as shown in fig. 7, the plurality of thermal compensation strips 6 on two adjacent convection pipes 5 are staggered and cross-distributed with each other, as shown in fig. 9, when condensed water is filled, the thermal compensation strips 6 are expanded under the action of the condensed water, at the moment, the two adjacent thermal compensation strips 6 are close to each other and contact with each other, so that rapid heat exchange can be realized, temperature compensation is performed, the temperature distribution of the condensed water outside an injection molding part is more uniform, and the cooling is more uniform; the length of the thermal compensation strips 6 is consistent with the width of the convection gap, the interval between two adjacent thermal compensation strips 6 on the same convection tube 5 is not more than three times of the width of the thermal compensation strips 6, when the thermal compensation strips 6 on the two convection tubes 5 are inserted into each other, the interval between the two thermal compensation strips 6 is not easy to be too large, and after the condensed water is filled for deformation, the contact area between the two thermal compensation strips 6 is larger, so that the heat exchange effect is better.
The closing-in section 51 and the wall-attaching drum layer 521 are both hard shaping structures, so that the whole framework of the convection tube 5 is shaped relatively, collapse is not easy to occur under the deformation force of the water change layer 522 and the thermal compensation strip 6, and the water change layer 522 is of a flexible sealing structure, so that the deformation of the thermal compensation strip 6 is convenient to adapt to a certain degree.
Referring to fig. 10, the middle parts of one ends of two adjacent heat compensating strips 6 close to each other are respectively provided with a wrapping sheet 62, a plurality of heat exchanging balls 61 are wrapped on the wrapping sheets 62, the plurality of heat exchanging balls 61 are positioned in the heat compensating strips 6, a concave layer is formed at the wrapping sheets 62 wrapping the heat exchanging balls 61, the mouth parts of the concave layer face the outside of the heat compensating strips 6, when condensed water is filled in, the heat exchanging balls 61 are extruded in the expansion process of the heat compensating strips 6, and at the moment, the two heat compensating strips 6 close to each other are in mutual extrusion contact, so that the exposed end surfaces of the heat exchanging balls 61 are embedded in the other wrapping sheets 62, and further the heat exchanging effect is better.
The thermal compensation strip 6 and the wrapping ball sheet 62 are both elastic sealing structures, and the heat exchange balls 61 are made of high heat conduction materials, so that heat conduction is facilitated, and the heat exchange effect is better; the length of the wrapping ball piece 62 along the trend of the thermal compensation strip 6 is not less than half of the length of the thermal compensation strip 6, the wrapping ball piece 62 is too long, the heat exchange balls 61 on two sides are not easy to embed into the other thermal compensation strip 6, the length is too small, the number of the heat exchange balls 61 embedded into each other is small, the distribution range is small, and the effect of improving the heat exchange effect is not obvious.
In this embodiment, the material of the adhesive drum layer 521 is changed based on embodiment 1, and the thermal compensation strip 6 and its related structure are added, which is partially identical to embodiment 1.
By matching with the arrangement of the plurality of thermal compensation strips 6, as shown in fig. 8, the water inlet side and the water outlet side of the two convection tubes 5 can be opposite, meanwhile, the plurality of thermal compensation strips 6 are in cross contact by filling condensed water, compensation of the temperature of the condensed water in the two convection tubes 5 can be realized, heat transfer balance is carried out, and further, the uniformity of the temperature distribution of the condensed water outside a die cavity is effectively improved, and the uniformity of cooling is further improved.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical solution and the modified concept thereof, within the scope of the present application.
Claims (10)
1. The utility model provides a to circulation formula injection mold, includes base, installs lower mould on the base and installs cope match-plate pattern (11) on the lower mould, form the die cavity between lower mould and cope match-plate pattern (11), the cutting of cope match-plate pattern (11) middle part has filler neck (3), filler neck (3) communicate with each other with the die cavity, its characterized in that, the lower mould includes lower die plate (12) and passes through lower die plate (13) of screw connection in lower die plate (12) upper end, enclose into cooling chamber (2) between lower die plate (13) and lower die plate (12), cooling chamber (2) and die cavity correspond each other and match, and cooling chamber (2) are located outside the die cavity, the equal fixedly connected with left water pipe (41) and right water pipe (42) of lower die plate (12) outer end, the tip that left water pipe (41) and right water pipe (42) are close to cooling chamber (2) all fixedly connected with water pipe (43), cooling chamber (2) are located the inner wall of lower die plate (13) and twine down pipe (5) and are located opposite directions die plate (13), and two down circulation pipe (5) are connected with each other.
2. An opposing-circulation injection mold according to claim 1, characterized in that two left water pipes (41) or two right water pipes (42) on the same side, one serving as water intake and the other serving as water discharge, are bounded by a longitudinal centerline of the lower mold plate (12).
3. An opposing-loop injection mold according to claim 1, wherein the convection tube (5) comprises a closing-in section (51) fixedly connected with the two water guide tubes (43) respectively and an adherence tube fixedly connected between the two closing-in sections (51), the adherence tube comprises an adherence drum layer (521) fixedly connected with the ends of the two closing-in sections (51) and a water-changing layer (522) fixedly inlaid on the two ends of the adherence drum layer (521) close to the two adjacent convection tubes (5), and the water-changing layer (522) is of an elastic sealing structure.
4. A counter-circulation injection mould according to claim 2, characterized in that the ends of two adjacent convection tubes (5) close to each other are not contacted, a convection gap is formed between the two convection tubes (5), the section of the wall-attached tube is semicircular, and the flat surface of the wall-attached tube is attached to the inner wall of the cooling cavity (2).
5. An opposing circulation injection mold according to claim 4, wherein a plurality of uniformly distributed thermal compensating strips (6) are fixedly connected to the water-altering layer (522), the thermal compensating strips (6) being in communication with the interior of the adherent tube.
6. The opposing-loop injection mold of claim 5, wherein the closing-in section (51) and the wall-engaging drum layer (521) are both rigid shaped structures, and the water-variable layer (522) is a flexible sealing structure.
7. An opposing-loop injection mold according to claim 1, characterized in that the length of the thermal compensation strips (6) is kept consistent with the width of the convection gap, and that the spacing between two adjacent thermal compensation strips (6) on the same convection tube (5) is no more than three times the width of the thermal compensation strips (6).
8. The opposite circulation injection mold according to claim 5, wherein a ball wrapping sheet (62) is disposed in the middle of one end of each of two adjacent heat compensation strips (6), a plurality of heat exchange balls (61) are wrapped on the ball wrapping sheet (62), the heat exchange balls (61) are located in the heat compensation strips (6), an inner concave layer is formed at the ball wrapping sheet (62) wrapping the heat exchange balls (61), and the mouth of the inner concave layer faces the outside of the heat compensation strips (6).
9. An opposing-loop injection mould according to claim 8, characterized in that the thermal compensation strip (6) and the ball-wrapping sheet (62) are both elastic sealing structures, and the heat exchange balls (61) are made of high heat conducting material.
10. An opposing circulation injection mould according to claim 9, characterised in that the length of the wrapping strip (62) along the length of the thermal compensation strip (6) is not less than half the length of the thermal compensation strip (6), and that the thermal compensation strips (6) on adjacent two convection tubes (5) are arranged in staggered and crossed relation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311184440.2A CN117103580A (en) | 2023-09-14 | 2023-09-14 | Opposite circulation type injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311184440.2A CN117103580A (en) | 2023-09-14 | 2023-09-14 | Opposite circulation type injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117103580A true CN117103580A (en) | 2023-11-24 |
Family
ID=88796390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311184440.2A Withdrawn CN117103580A (en) | 2023-09-14 | 2023-09-14 | Opposite circulation type injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117103580A (en) |
-
2023
- 2023-09-14 CN CN202311184440.2A patent/CN117103580A/en not_active Withdrawn
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Application publication date: 20231124 |