CN115383998A - Injection mold convenient to exhaust - Google Patents
Injection mold convenient to exhaust Download PDFInfo
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- CN115383998A CN115383998A CN202210616303.0A CN202210616303A CN115383998A CN 115383998 A CN115383998 A CN 115383998A CN 202210616303 A CN202210616303 A CN 202210616303A CN 115383998 A CN115383998 A CN 115383998A
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- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 238000003825 pressing Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 13
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 56
- 238000010438 heat treatment Methods 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000004513 sizing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012943 hotmelt Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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Classifications
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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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
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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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
Abstract
The invention belongs to the technical field of injection molds, and particularly relates to an injection mold convenient for exhausting; the die comprises an upper die and a lower die, wherein the lower die is arranged at the bottom of the upper die; the bottom surface of the upper die is fixedly connected with a guide rod at a position close to the side surface of the upper die; a cavity is formed between the upper die and the lower die, and an injection product is arranged in the cavity; a pouring gate is arranged at the top of the cavity on the bottom surface of the upper die; the top surface of the lower die is provided with a sliding groove at the bottommost position of a product; a sliding block is connected inside the sliding groove in a sliding manner; according to the invention, automatic negative pressure extraction of the cavity in the injection mold is effectively realized, plastic is promoted to automatically flow towards the position far away from the pouring gate, the cavity can be fully filled when the pressure of the plastic led out from the pouring gate is relatively low, the problem of material shortage is avoided, high-pressure injection is not needed, the problem of a large amount of trapped air in the cavity is avoided, exhaust is promoted, and the quality of a product is greatly improved.
Description
Technical Field
The invention belongs to the technical field of injection molds, and particularly relates to an injection mold convenient for exhaust.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and a formed product is obtained by injecting heated and melted plastic into a cavity from an injection molding machine at high pressure and cooling and solidifying the plastic.
According to the N109016397B injection mold convenient for exhausting and capable of improving injection molding quality, the exhaust groove has the characteristic of automatic sealing, when the injection mold is not used, the injection mold can be erected, the exhaust groove is automatically closed, the problem of blockage caused by fine particles accumulated in the exhaust groove due to long-time non-use of the injection mold can be solved, and meanwhile, the exhaust plate and the fan box are installed, and when the injection mold is used, the exhaust plate can be controlled to open the exhaust groove.
However, in the prior art, when the hot-melt plastic is introduced into the cavity through the gate, the hot-melt plastic needs to flow and fill in the cavity, and finally the whole cavity is completely filled, but when pouring is performed, if the internal pressure of the gate is low, the plastic can slowly flow, the gas in the cavity can be completely emptied, but when the internal pressure of the gate is high, the plastic flows fast in the cavity, and the cavity can be quickly filled, but because the flow speed of the plastic is too fast, part of the gas in the cavity can be mixed with the inside of the plastic, and if the inside of the plastic contains water vapor, the internal residual gas of the plastic can be caused, on one hand, the product is easy to be starved, on the other hand, the product can be burnt, and the product can be scrapped.
In view of the above, the present invention provides an injection mold facilitating air exhaust, which solves the above technical problems.
Disclosure of Invention
In order to solve the problems that in the prior art, when hot-melt plastic is guided into a cavity through a gate, the hot-melt plastic needs to flow and fill in the cavity, and finally the whole cavity is completely filled, but when pouring is carried out, if the internal pressure of the gate is low, the plastic can slowly flow, gas in the cavity can be completely emptied, but when the internal pressure of the gate is high, the plastic flows in the cavity at a high speed and quickly fills the cavity, but because the flowing speed of the plastic is too high, part of gas in the cavity can be mixed and melted in the plastic, and if the plastic contains water vapor, residual gas in the plastic can be caused, on one hand, the product is easy to be out of stock, on the other hand, the product can be burnt, and the product is scrapped, and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: the injection mold convenient for exhaust comprises an upper mold and a lower mold, wherein the lower mold is arranged at the bottom of the upper mold; the bottom surface of the upper die is fixedly connected with a guide rod at the position close to the side surface of the upper die; guide holes are formed in the top surface of the lower die at the positions of the guide rods; a cavity is formed between the upper die and the lower die, and an injection product is arranged in the cavity; a pouring gate is arranged at the top of the cavity on the bottom surface of the upper die; the number of the gates is three, and the gates are communicated with each other; the top surface of the lower die is provided with a sliding groove at the bottommost position of a product; a sliding block is connected inside the sliding groove in a sliding manner; the surface of the sliding block is provided with exhaust holes which are uniformly distributed; when in work, the injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, the heated and melted plastic is injected into a cavity from an injection molding machine at high pressure and is cooled and solidified to obtain a formed product, in the prior art, when the heated and melted plastic is guided into the cavity through a pouring gate, the heated and melted plastic needs to flow and fill in the cavity, and finally the whole cavity is completely filled, but when pouring is carried out, if the internal pressure of the pouring gate is lower, the plastic can slowly flow and can completely exhaust gas in the cavity, but when the internal pressure of the pouring gate is higher, the plastic flows in the cavity at a higher speed and can quickly fill the cavity, but because the flowing speed of the plastic is too high, part of gas in the cavity can be mixed with the inside of the plastic, and if the inside of the plastic contains water vapor, when a product needs to be injected, when the plastic is injected into the cavity, the inside of the sliding groove is pressurized firstly to enable the sliding block inside the sliding groove to be ejected out, when the plastic flows to the position of the sliding block, the cavity near the sliding block is filled firstly, then the inside of the sliding groove is cut into negative pressure, the sliding block is retracted into the corresponding sliding groove, when the sliding block slides, a negative pressure space is generated near the sliding block, the plastic can be promoted to continue to flow and fill the cavity, and the gas near the sliding block can be directly discharged through the vent hole, so that the gas inside the cavity can be completely discharged, and the automatic negative pressure pumping of the cavity inside the injection mold is effectively realized through the invention, the plastic is promoted to automatically flow towards the position far away from the pouring gate, the cavity can be fully filled when the pressure of the plastic led out from the pouring gate is relatively low, the problem of material shortage is avoided, high-pressure injection glue injection is not needed, the problem of internal gas trapping is avoided, exhaust is promoted, and the quality of products is greatly improved.
Preferably, the side surface of the sliding groove is provided with an adjusting groove; a compression ring is fixedly connected to the side face of the sliding block at the position of the adjusting groove; the top of the adjusting groove is provided with evenly distributed press grooves; the inner parts of the pressure grooves are connected with pressure blocks in a sliding manner; a first spring is fixedly connected between the pressing block and the bottom of the corresponding pressing groove; the side surface of the sliding block is provided with guide grooves which are uniformly distributed at the position close to the top surface of the sliding block, and the guide grooves are communicated with the pressure grooves; the guide blocks are connected inside the guide grooves in a sliding manner; second springs are fixedly connected between the guide blocks and the bottoms of the corresponding guide grooves; during operation, through setting up briquetting and guide block, when the ejecting corresponding spout of slider, the briquetting can be extruded simultaneously to the clamping ring of slider side for the briquetting moves towards the inside that corresponds the indent, and then the inside gas of indent can enter into the inside of guide slot, realizes the derivation of the inside guide block of guide slot, and the guide block can extrude the peripheral plastic of slider this moment, promotes the gaseous complete discharge of slider periphery.
Preferably, the guide blocks are internally provided with flow channels; the side faces of the guide blocks, which are opposite to one side of the groove bottom of the corresponding guide grooves, are provided with interfaces; the surfaces of the interfaces are fixedly connected with connecting pipes which are communicated with a heat source; the during operation is through seting up the runner in the inside of guide block, through to the leading-in hot-fluid of inside of runner, realizes the rapid heating to the guide block, and then can guarantee that the plastic near guide block and slider keep the flow state, when avoiding the plastic to flow into near slider, because far away apart from the runner, slider and guide block can increase the area of contact with the plastic by a wide margin simultaneously for the inside heat of plastic scatters and disappears fast, and then the plastic solidification problem.
Preferably, the top surface of the sliding block is provided with a suction plate; the surface of the suction plate is provided with suction holes which are uniformly distributed; during operation, through setting up the suction disc, through seting up the suction hole of evenly arranging on the surface of suction disc, when the inside of corresponding spout is packed into in the slider totally, through the final negative pressure of suction hole, the promotion die cavity is inside to be located the stranded gas near the slider and is discharged totally.
Preferably, the bottom surface of the adjusting groove is provided with movable grooves which are uniformly distributed; the inner parts of the movable grooves are all connected with movable blocks in a sliding manner; third springs are fixedly connected between the movable blocks and the bottoms of the corresponding movable grooves; the top surfaces of the movable blocks are fixedly connected with guide posts; guide holes are formed in the top surfaces of the movable grooves at the positions of the guide pillars, and the guide pillars are connected to the inner parts of the corresponding guide holes in a sliding mode; the top surface of the sliding block is provided with an accommodating groove at the position of the suction plate, and the accommodating groove is communicated with the guide hole; the during operation, through setting up the movable block, when the inside of corresponding spout is gone into in the slider, the clamping ring on slider surface can extrude the movable block, the movable block can drive and correspond the guide pillar and derive and correspond the guide hole, and then the inside atmospheric pressure of guide hole reduces, the partial gas of holding inslot portion can flow in the guide hole, the suction plate can automatic internal suction be stranded gas this moment, when the slider is derived and is corresponded the spout, the guide pillar can automatic extrusion correspond the inside gas of guide hole, make the inside gas of guide hole enter into the inside of holding the groove, the partial gas of holding inslot portion can be discharged through inhaling the hole, can carry out automatic clearance to inhaling the hole on the one hand, avoid blockking up, on the other hand can promote the product drawing of patterns.
Preferably, the top surface of the sliding block is provided with an annular groove; the bottom surface of the suction plate is fixedly connected with an annular block at the position of the annular groove; the side surface of the annular block is fixedly connected with a toothed ring; a moving groove is formed in the inner part of the sliding block, close to the tooth ring; a moving block is connected in the moving groove in a sliding manner; a toothed plate is fixedly connected to the side face of one side of the moving block relative to the toothed ring, and the toothed plate is meshed and connected with the toothed ring; during operation, the moving block is controlled to move through the power air source, the moving block can drive the toothed plate to move, the toothed plate can further drive the toothed ring to rotate, the toothed ring can drive the annular block to rotate, the annular block can drive the suction plate to rotate, the suction plate rotates and can clean the bottom surface of a formed product, cleaning of the bottom surface of the product at the position of the sliding block is promoted, and burrs are reduced.
Preferably, the side surface of the suction plate is fixedly connected with a first cutter; the top surface of the lower die is provided with a groove at the position of the first cutter; the during operation through setting up first cutter, can drive first cutter through the suction disc and rotate, can cut the clearance to the peripheral flash of slider through first cutter, reduces the artifical work load that removes the overlap flash in later stage, improves the production efficiency of product by a wide margin.
Preferably, the inner parts of the suction holes are fixedly connected with annular rings, and the sections of the annular rings are all designed into hemispheroids; the bottom surface of the containing groove is fixedly connected with a heating plate; the during operation sets up the annular ring in the inside of inhaling the hole through the setting, makes through the annular ring to inhale the plastic middle part diameter of downthehole portion less, and when the suction disc rotated, the plastic of inhaling downthehole portion changes and splits in path position, guarantees the smooth drawing of patterns of product, and the hot plate can continuously heat the plastic that holds inslot portion simultaneously, promotes melting of plastic to and realize reverse glue of mending, avoid scarce material problem.
Preferably, the positions of the inner side surfaces of the suction holes, which are close to the top surface of the suction plate, are fixedly connected with second cutters, and the second cutters are uniformly distributed in the suction holes in an annular manner; during operation, through setting up the second cutter, when the suction disc rotated through the second cutter, the second cutter can promote to cut the cracked unnecessary sizing material in product bottom, promoted the level and smooth of product surface.
Preferably, the surface of the annular ring is provided with uniformly arranged supporting teeth; a ball body is arranged between the adjacent supporting teeth; through holes which are uniformly distributed are formed in the annular ring; the during operation, through setting value spheroid and support tooth, when the plastic flows into the suction hole, can directly flow in the inside of holding the groove through the spheroid with the clearance between the support tooth, the spheroid of metal easily conducts heat, can promote sucking the quick melting of the inside plastic in hole, reduces the stifled hole risk, and the through-hole on annular ring surface can play basic intake and exhaust effect simultaneously, avoids the plastic to flow fast in the inside of sucking the hole to produce the sizing material and strike the problem to the product surface.
The invention has the following beneficial effects:
1. according to the injection mold convenient for exhaust, the upper mold and the lower mold are arranged, and the sliding block is arranged on the inner top surface of the lower mold, so that automatic negative pressure pumping of an inner cavity of the injection mold is effectively realized, plastic is promoted to automatically flow towards a position far away from a pouring gate, the cavity can be fully filled when the pressure of the plastic led out from the pouring gate is relatively low, the problem of material shortage is avoided, high-pressure injection glue injection is not needed, the problem of internal air trapping is avoided, exhaust is promoted, and the quality of a product is greatly improved.
2. According to the injection mold convenient for exhaust, the suction plate is arranged, the moving block is controlled to move through the power air source, the moving block can drive the toothed plate to move, the toothed plate can further drive the toothed ring to rotate, the toothed ring can drive the annular block to rotate, the annular block can drive the suction plate to rotate, the suction plate can rotate to clean the bottom surface of a formed product, cleaning of the bottom surface of the product at the position of the sliding block is promoted, burrs are reduced, meanwhile, the suction plate can drive the first cutter to rotate, and flash on the periphery of the sliding block can be cut and cleaned through the first cutter, so that workload of manual flash removal in the later period is reduced, and production efficiency of the product is greatly improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged partial view at B in FIG. 3;
FIG. 5 is an enlarged partial view at C of FIG. 4;
FIG. 6 is an enlarged partial view at D of FIG. 4;
in the figure: the device comprises an upper die 1, a lower die 2, a guide rod 3, a product 4, a pouring gate 5, a sliding block 6, an exhaust hole 7, a pressing ring 8, a pressing block 9, a first spring 10, a guide block 11, a second spring 12, a flow channel 13, a connecting pipe 14, a suction plate 15, a suction hole 16, a movable block 17, a third spring 18, a guide pillar 19, a containing groove 20, an annular block 21, a toothed ring 22, a movable block 23, a toothed plate 24, a first cutter 25, an annular ring 26, a heating plate 27, a second cutter 28, a supporting tooth 29, a sphere 30 and a through hole 31.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the injection mold convenient for exhaust comprises an upper mold 1 and a lower mold 2, wherein the lower mold 2 is arranged at the bottom of the upper mold 1; the bottom surface of the upper die 1 is fixedly connected with a guide rod 3 at the side surface close to the upper die 1; guide holes are formed in the top surface of the lower die 2 at the positions of the guide rods 3; a cavity is formed between the upper die 1 and the lower die 2, and an injection product 4 is arranged in the cavity; a pouring gate 5 is arranged at the top of the cavity on the bottom surface of the upper die 1; the number of the gates 5 is three, and the gates are communicated with each other; the top surface of the lower die 2 is provided with a sliding groove at the bottommost position of the product 4; a sliding block 6 is connected inside the sliding groove in a sliding manner; the surface of the sliding block 6 is provided with exhaust holes 7 which are uniformly distributed; when the injection mold works, the injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, the heated and melted plastic is injected into a cavity under high pressure by an injection molding machine, a formed product is obtained after cooling and solidification, in the prior art, when the heated and melted plastic is introduced into the cavity through a pouring gate 5, the heated and melted plastic needs to flow and fill in the cavity, and finally the whole cavity is completely filled, but when pouring is carried out, if the internal pressure of the pouring gate 5 is low, the plastic can slowly flow, gas in the cavity can be completely emptied, but when the internal pressure of the pouring gate 5 is high, the plastic flows in the cavity at a high speed and quickly fills the cavity, but because the flowing speed of the plastic is too high, part of gas in the cavity can be mixed with the plastic, and if water vapor is contained in the plastic, residual gas in the plastic can be left, on one hand, the product 4 is easy to be starved, on the other hand, the product 4 is burnt, the problems of the product 4 are caused, and the product 4 is convenient to be conveniently exhausted, when the gas in the cavity contains water vapor, the slider 6, the slider can be pushed out, and the slider 6 can be pushed out to the slider 6, so that the slider 6 can be pushed out from the slider can be pushed out from the cavity, and the slider can be pushed out from the slider 6, and the slider can be pushed out directly pushed out from the cavity, the automatic negative pressure pumping device effectively realizes the automatic negative pressure pumping of the inner cavity of the injection mold, promotes the plastic to automatically flow towards the position far away from the sprue 5, ensures that the cavity can be fully filled when the pressure of the plastic led out from the sprue 5 is relatively low, avoids the problem of material shortage, simultaneously does not need high-pressure injection, avoids the problem of a large amount of trapped air in the cavity, promotes the exhaust, and greatly improves the quality of a product 4.
As an embodiment of the present invention, an adjusting groove is formed on a side surface of the sliding groove; a compression ring 8 is fixedly connected to the side surface of the sliding block 6 at the position of the adjusting groove; the top of the adjusting groove is provided with evenly distributed press grooves; the pressing blocks 9 are connected inside the pressing grooves in a sliding manner; a first spring 10 is fixedly connected between the pressing block 9 and the bottom of the corresponding pressing groove; the side surface of the sliding block 6 is provided with guide grooves which are uniformly distributed at the position close to the top surface of the sliding block 6, and the guide grooves are communicated with the pressure grooves; the guide blocks 11 are connected inside the guide grooves in a sliding manner; a second spring 12 is fixedly connected between the guide block 11 and the bottom of the corresponding guide groove; during operation, through setting up briquetting 9 and guide block 11, when the ejecting corresponding spout of slider 6, the clamping ring 8 of the 6 sides of slider can extrude briquetting 9 simultaneously for briquetting 9 is moving towards the inside that corresponds the indent, and then the inside gas of indent can enter into the inside of guide slot, realizes the derivation of the inside guide block 11 of guide slot, and guide block 11 can extrude the peripheral plastic of slider 6 this moment, promotes the complete discharge of the peripheral gas of slider 6.
As an embodiment of the present invention, the guide blocks 11 are provided with flow passages 13 inside; the side faces of the guide blocks 11, which are opposite to one sides of the bottoms of the corresponding guide grooves, are provided with interfaces; the surfaces of the interfaces are fixedly connected with connecting pipes 14, and the connecting pipes 14 are communicated with a heat source; during operation, through seting up runner 13 in the inside of guide block 11, through the leading-in hot-fluid to the inside of runner 13, realize the rapid heating to guide block 11, and then can guarantee that the plastic near guide block 11 and slider 6 keep the flow state, when avoiding the plastic to flow into near slider 6, because far away from runner 5, slider 6 and guide block 11 can increase by a wide margin the area of contact with the plastic simultaneously, make the inside heat of plastic scatter and disappear fast, and then the plastic solidification problem.
As an embodiment of the present invention, the top surface of the slide block 6 is provided with a suction plate 15; the surface of the suction plate 15 is provided with suction holes 16 which are uniformly distributed; when the air-assisted injection molding machine works, the suction plate 15 is arranged, the suction holes 16 which are uniformly distributed are formed in the surface of the suction plate 15, and when the sliding block 6 is completely retracted into the corresponding sliding groove, the trapped air near the sliding block 6 in the cavity is completely exhausted by the final negative pressure of the suction holes 16.
As an embodiment of the invention, the bottom surface of the adjusting groove is provided with movable grooves which are uniformly arranged; the movable blocks 17 are connected inside the movable grooves in a sliding manner; a third spring 18 is fixedly connected between the movable block 17 and the bottom of the corresponding movable groove; the top surfaces of the movable blocks 17 are fixedly connected with guide posts 19; guide holes are formed in the top surfaces of the movable grooves at the positions of the guide pillars 19, and the guide pillars 19 are connected to the inner parts of the corresponding guide holes in a sliding mode; the top surface of the sliding block 6 is provided with a containing groove 20 at the position of the suction plate 15, and the containing groove 20 is communicated with the guide hole; the during operation, through setting up the movable block 17, when the inside of corresponding spout is received in slider 6, 6 surperficial clamping rings 8 of slider can extrude movable block 17, movable block 17 can drive and correspond guide pillar 19 and derive and correspond the guide hole, and then the inside atmospheric pressure of guide hole reduces, the inside part gas of holding groove 20 can flow in the guide hole, inhale the automatic internal stranded gas of board 15 this moment, when slider 6 derives and corresponds the spout, guide pillar 19 can extrude the inside gas of corresponding guide hole automatically, make the inside gas of guide hole enter into the inside of holding groove 20, the inside part gas of holding groove 20 can be discharged through inhaling hole 16, can carry out automatic clearance to inhaling hole 16 on the one hand, avoid blockking up, on the other hand can promote the 4 drawing of patterns of products.
As an embodiment of the present invention, the top surface of the sliding block 6 is provided with an annular groove; the bottom surface of the suction plate 15 is fixedly connected with an annular block 21 at the position of the annular groove; the side surface of the annular block 21 is fixedly connected with a toothed ring 22; a moving groove is formed in the inner part of the sliding block 6, close to the toothed ring 22; a moving block 23 is connected in the moving groove in a sliding manner; a toothed plate 24 is fixedly connected to the side surface of one side of the moving block 23 opposite to the toothed ring 22, and the toothed plate 24 is meshed with the toothed ring 22; during operation, through the removal of power air supply control movable block 23, movable block 23 can take out pinion rack 24 and remove, and pinion rack 24 and then can drive ring gear 22 and rotate, and ring gear 22 can drive annular piece 21 and rotate, and annular piece 21 can drive suction disc 15 and rotate, and suction disc 15 rotates and can clear up 4 bottom surfaces of the product after the shaping, promotes the clearance in 4 bottom surfaces of the product of 6 positions of slider, reduces and drapes over one's shoulders the cutting edge.
As an embodiment of the present invention, a first cutter 25 is fixedly connected to a side surface of the suction plate 15; a groove is formed in the position, where the first cutter 25 is located, of the top surface of the lower die 2; during operation, through setting up first cutter 25, can drive first cutter 25 through suction disc 15 and rotate, can cut the clearance to the peripheral flash of slider 6 through first cutter 25, reduce the artifical work load that goes the overlap flash in later stage, improve the production efficiency of product 4 by a wide margin.
As an embodiment of the present invention, the inside of the suction holes 16 is fixedly connected with annular rings 26, and the cross sections of the annular rings 26 are all designed in a hemispherical structure; the bottom surface of the containing groove 20 is fixedly connected with a heating plate 27; during operation, set up annular ring 26 in the inside of inhaling hole 16 through the setting, it is less to make through annular ring 26 and inhale the inside plastic middle part diameter in hole 16, and when suction disc 15 rotated, it changes the fracture in path position to inhale the inside plastic in hole 16, guarantees the smooth drawing of patterns of product 4, and hot plate 27 can carry out the sustained heating to the plastic that holds groove 20 inside simultaneously, promotes melting of plastic to and realize reverse benefit and glue, avoid scarce material problem.
As an embodiment of the present invention, the positions of the inner side surfaces of the suction holes 16, which are close to the top surface of the suction plate 15, are fixedly connected with the second cutters 28, and the second cutters 28 are uniformly distributed in the suction holes 16 in an annular manner; during operation, through setting up second cutter 28, when the suction plate 15 rotated through second cutter 28, second cutter 28 can promote to cut the cracked unnecessary sizing material in product 4 bottom, promoted the level and smooth of product 4 surface.
As an embodiment of the invention, the surface of the annular ring 26 is provided with uniformly arranged supporting teeth 29; a ball 30 is arranged between the adjacent supporting teeth 29; through holes 31 which are uniformly distributed are formed in the annular ring 26; during operation, through setting value spheroid 30 and support tooth 29, when the plastic flows in suction hole 16, can directly flow in the inside of holding groove 20 through the clearance between spheroid 30 and the support tooth 29, the spheroid 30 of metal easily conducts heat, can promote sucking the quick melting of the inside plastic in hole 16, reduces the stifled hole risk, the through-hole 31 on 26 surfaces of ring can play basic intake and exhaust effect simultaneously, avoid the plastic to flow at the inside of sucking hole 16 fast, and produce the sizing material impact problem to product 4 surfaces.
The specific working process is as follows:
when the injection molding machine works, when a product 4 needs to be injected, when plastic is injected into the cavity, the interior of the chute is pressurized firstly, so that the sliding block 6 in the chute is ejected out, when the plastic flows to the position of the sliding block 6, the cavity near the sliding block 6 is filled firstly, then negative pressure is cut into the interior of the chute, the sliding block 6 is retracted into the interior of the corresponding chute, when the sliding block 6 slides, a negative pressure space is generated near the sliding block 6, further, the plastic can be promoted to flow continuously, the cavity is filled, and gas near the sliding block 6 can be directly discharged through the exhaust hole 7, so that the gas in the cavity is completely discharged; when the sliding block 6 is ejected out of the corresponding sliding groove, the pressing ring 8 on the side surface of the sliding block 6 can simultaneously extrude the pressing block 9, so that the pressing block 9 moves towards the inside of the corresponding sliding groove, further, gas in the sliding groove can enter the guide groove, the guide block 11 in the guide groove can be led out, the guide block 11 can extrude plastic around the sliding block 6 at the moment, and the complete discharge of the gas around the sliding block 6 is promoted; by introducing hot fluid into the flow channel 13, the guide block 11 is rapidly heated, so that the plastic cement in the guide block 11 and the position near the slide block 6 can be ensured to keep a flowing state, and the problem that when the plastic cement flows into the position near the slide block 6, the contact area between the slide block 6 and the guide block 11 and the plastic cement is greatly increased due to the fact that the distance between the slide block 6 and the slide block 6 is far from the sprue 5, heat in the plastic cement is rapidly dissipated, and the plastic cement is cured is solved; due to the fact that the suction holes 16 are uniformly formed in the surface of the suction plate 15, when the sliding block 6 is completely retracted into the corresponding sliding groove, the trapped air in the cavity near the sliding block 6 is completely exhausted due to the fact that negative pressure is finally generated through the suction holes 16; when the sliding block 6 is accommodated in the corresponding sliding groove, the press ring 8 on the surface of the sliding block 6 can extrude the movable block 17, the movable block 17 can drive the corresponding guide post 19 to guide out the corresponding guide hole, so that the air pressure in the guide hole is reduced, part of air in the accommodating groove 20 can flow into the guide hole, the suction plate 15 can automatically suck trapped air, when the sliding block 6 is guided out of the corresponding sliding groove, the guide post 19 can automatically extrude the air in the corresponding guide hole, the air in the guide hole enters the accommodating groove 20, and part of air in the accommodating groove 20 can be discharged through the suction hole 16, so that on one hand, the suction hole 16 can be automatically cleaned, the blockage is avoided, and on the other hand, the product 4 can be promoted to be demoulded; the moving block 23 is controlled to move through a power air source, the moving block 23 can drive the toothed plate 24 to move, the toothed plate 24 can further drive the toothed ring 22 to rotate, the toothed ring 22 can drive the annular block 21 to rotate, the annular block 21 can drive the suction plate 15 to rotate, the suction plate 15 rotates to clean the bottom surface of the molded product 4, cleaning of the bottom surface of the product 4 at the position of the sliding block 6 is promoted, and burrs are reduced; the suction plate 15 can drive the first cutter 25 to rotate, and the first cutter 25 can cut and clean the flash around the sliding block 6, so that the workload of manually removing flash at the later stage is reduced, and the production efficiency of the product 4 is greatly improved; the diameter of the middle part of the plastic inside the suction hole 16 is smaller through the annular ring 26, when the suction plate 15 rotates, the plastic inside the suction hole 16 is easier to break at a small-diameter position, smooth demolding of the product 4 is ensured, meanwhile, the heating plate 27 can continuously heat the plastic inside the accommodating groove 20, melting of the plastic is promoted, reverse glue supplement is realized, and the problem of material shortage is avoided; when the suction plate 15 rotates through the second cutter 28, the second cutter 28 can promote cutting of the excess sizing material broken at the bottom of the product 4, and promote leveling of the surface of the product 4; when the plastic flows into the suction hole 16, the plastic can directly flow into the inside of the containing groove 20 through the gap between the ball 30 and the supporting teeth 29, the metal ball 30 is easy to conduct heat, the rapid melting of the plastic inside the suction hole 16 can be promoted, the risk of hole blocking is reduced, meanwhile, the through holes 31 on the surface of the annular ring 26 can play a basic air intake and exhaust role, the plastic is prevented from rapidly flowing inside the suction hole 16, and the problem of rubber material impact on the surface of the product 4 is solved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an injection mold convenient to exhaust, includes mould (1) and lower mould (2), its characterized in that: the bottom of the upper die (1) is provided with a lower die (2); the side surface of the bottom surface of the upper die (1) close to the upper die (1) is fixedly connected with a guide rod (3); guide holes are formed in the top surface of the lower die (2) at the positions of the guide rods (3); a cavity is jointly formed between the upper die (1) and the lower die (2), and an injection product (4) is arranged in the cavity; a pouring gate (5) is arranged at the top of the cavity on the bottom surface of the upper die (1); the number of the gates (5) is three, and the gates are communicated with each other; the top surface of the lower die (2) is provided with a sliding groove at the bottommost position of the product (4); a sliding block (6) is connected inside the sliding groove in a sliding manner; the surface of the sliding block (6) is provided with exhaust holes (7) which are uniformly distributed; the side surface of the sliding groove is provided with an adjusting groove; a compression ring (8) is fixedly connected to the side surface of the sliding block (6) at the position of the adjusting groove; the top of the adjusting groove is provided with evenly distributed press grooves; the pressing blocks (9) are connected inside the pressing grooves in a sliding manner; a first spring (10) is fixedly connected between the pressing block (9) and the bottom of the corresponding pressing groove; the side surface of the sliding block (6) is provided with guide grooves which are uniformly distributed at the position close to the top surface of the sliding block (6), and the guide grooves are communicated with the pressure grooves; the guide blocks (11) are connected inside the guide grooves in a sliding manner; a second spring (12) is fixedly connected between the guide block (11) and the bottom of the corresponding guide groove; runners (13) are formed in the guide blocks (11); the side face, corresponding to one side of the groove bottom of the corresponding guide groove, of the guide block (11) is provided with an interface; the surfaces of the interfaces are fixedly connected with connecting pipes (14), and the connecting pipes (14) are communicated with a heat source;
the top surface of the sliding block (6) is provided with a suction plate (15); the surface of the suction plate (15) is provided with suction holes (16) which are uniformly distributed;
the top surface of the sliding block (6) is provided with an annular groove; the bottom surface of the suction plate (15) is fixedly connected with an annular block (21) at the position of the annular groove; the side surface of the annular block (21) is fixedly connected with a toothed ring (22); a moving groove is formed in the inner part of the sliding block (6) close to the tooth ring (22); a moving block (23) is connected in the moving groove in a sliding manner; the side face of one side of the moving block (23) relative to the toothed ring (22) is fixedly connected with a toothed plate (24), and the toothed plate (24) is meshed with the toothed ring (22).
2. The injection mold facilitating air exhaust of claim 1, wherein: the side surface of the suction plate (15) is fixedly connected with a first cutter (25); the top surface of the lower die (2) is provided with a groove at the position of the first cutter (25).
3. The injection mold facilitating air venting of claim 2, wherein: the inner side surface of the suction hole (16) is close to the top surface of the suction plate (15), and the second cutters (28) are fixedly connected with the top surface of the suction plate (15), and the second cutters (28) are annularly and uniformly distributed in the suction hole (16).
4. An injection mold facilitating venting as defined in claim 3, wherein: the surface of the annular ring (26) is provided with evenly arranged supporting teeth (29); a ball body (30) is arranged between the adjacent supporting teeth (29); through holes (31) which are uniformly distributed are formed in the annular ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210616303.0A CN115383998A (en) | 2021-04-13 | 2021-04-13 | Injection mold convenient to exhaust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394204.8A CN113103516B (en) | 2021-04-13 | 2021-04-13 | Injection mold convenient to exhaust |
| CN202210616303.0A CN115383998A (en) | 2021-04-13 | 2021-04-13 | Injection mold convenient to exhaust |
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| CN202110394204.8A Division CN113103516B (en) | 2021-04-13 | 2021-04-13 | Injection mold convenient to exhaust |
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| CN115383998A true CN115383998A (en) | 2022-11-25 |
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| CN202210616303.0A Pending CN115383998A (en) | 2021-04-13 | 2021-04-13 | Injection mold convenient to exhaust |
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| CN114131840A (en) * | 2021-10-28 | 2022-03-04 | 南京名冠塑业有限责任公司 | Injection molding machine is used in plastics tray production with prevent blockking up structure |
| CN117644608B (en) * | 2024-01-29 | 2024-04-16 | 苏州瑞德智慧精密科技股份有限公司 | Flash removing assembly and injection molding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4302798C1 (en) * | 1993-02-02 | 1994-06-16 | Hodler F & Cie Fondarex Sa | Valve appts for air removal from pressure-casting moulds - with closure of the air valve effected by means of impact and force transfer elements. |
| GB2339163B (en) * | 1998-05-27 | 2002-12-24 | Dunlop Tyres Ltd | Mould vents |
| JP3780155B2 (en) * | 2000-08-07 | 2006-05-31 | キヤノン株式会社 | Injection mold degassing device |
| JP3932938B2 (en) * | 2002-03-20 | 2007-06-20 | 双葉電子工業株式会社 | Injection mold and injection mold pin |
| DE602009000889D1 (en) * | 2008-01-28 | 2011-04-28 | Saito Kanagata Seisakusho Kk | STRUCTURE FOR THE DISASSEMBLY AND FORM WITH THIS STRUCTURE |
| JP2014213573A (en) * | 2013-04-26 | 2014-11-17 | 重夫 関根 | Air vent valve device and injection molding mold |
| CN207736678U (en) * | 2018-01-17 | 2018-08-17 | 东莞市旭敦五金塑胶制品有限公司 | A kind of injection mold improving injection molding precision |
| CN108437356B (en) * | 2018-03-13 | 2024-03-08 | 苏州精锐精密机械有限公司 | Injection mold |
| CN209454092U (en) * | 2019-01-16 | 2019-10-01 | 青岛雷森托尔环保科技有限公司 | A kind of exhaust module being molded wooden packing mold |
| CN211542219U (en) * | 2019-12-30 | 2020-09-22 | 东莞晋原电子有限公司 | Mould capable of avoiding air trapping |
| CN111361100A (en) * | 2020-04-12 | 2020-07-03 | 桐乡市德功庵建材有限公司 | Turbofan injection mold |
| CN112590137A (en) * | 2020-12-23 | 2021-04-02 | 李元春 | Injection mold is used in plastic tubing joint production |
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| CN113103516A (en) | 2021-07-13 |
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