CN116985345B - Injection mold system with injection molding trimming function - Google Patents
Injection mold system with injection molding trimming function Download PDFInfo
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- CN116985345B CN116985345B CN202311226505.5A CN202311226505A CN116985345B CN 116985345 B CN116985345 B CN 116985345B CN 202311226505 A CN202311226505 A CN 202311226505A CN 116985345 B CN116985345 B CN 116985345B
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- injection
- injection molding
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- trimming
- plate
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 130
- 238000002347 injection Methods 0.000 title claims abstract description 125
- 239000007924 injection Substances 0.000 title claims abstract description 125
- 238000009966 trimming Methods 0.000 title claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000005520 cutting process Methods 0.000 claims abstract description 32
- 239000004033 plastic Substances 0.000 claims abstract description 32
- 229920003023 plastic Polymers 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 34
- 239000000243 solution Substances 0.000 description 11
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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
- B29C45/2602—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
- B29C45/1753—Cleaning or purging, e.g. of the injection unit
-
- 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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/42—Removing or ejecting moulded articles using means movable from outside the mould between mould parts, e.g. robots
- B29C45/4225—Take-off members or carriers for the moulded articles, e.g. grippers
-
- 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)
- Robotics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold system with an injection molding product trimming function, which comprises a plastic injection pipe, an injection mold arranged on a bottom plate and a trimming cooling mechanism, wherein the injection mold is arranged on the bottom plate; the injection mold is positioned at the left side of the plastic injection pipe, and the ejection mechanism is arranged in the injection mold; the ejection mechanism comprises a synchronous plate positioned at the inner side of the injection mold, a first hydraulic push rod is fixedly arranged at the bottom of the synchronous plate, and a plurality of groups of ejector pins and an inflation layering mechanism are fixed at the top of the synchronous plate. According to the invention, when the injection molding product is ejected, the injection molding product forming cavity is communicated with the outside, so that negative pressure is prevented from being formed between the injection molding product forming cavity and the injection molding product, the ejection work of the ejector pin is assisted, and the probability of ejection deformation fracture of the injection molding product is reduced; the injection molding channel and the injection molding cavity are connected to be cut off, so that a plurality of injection molding pieces are cut off in the molding process, the subsequent cutting operation is omitted, and the molding production efficiency of the injection molding products is improved.
Description
Technical Field
The invention relates to the field of injection mold systems, in particular to an injection mold system with an injection product trimming function.
Background
The injection mold system is an integral injection molding process system which consists of an injection mold, an injection device, a cooling system, an ejection mechanism and the like, and the functions of plastic melting, injection molding and product taking out are realized by cooperation.
The following are the main components of the injection mold system:
and (3) an injection mold: an injection mold is a key component for realizing injection molding, and comprises a mold shell, a mold cavity plate and other components. The cavity on the die cavity plate and the cooling system jointly form the shape and the size of the plastic product;
an injection device: the injection device is typically composed of an injection cylinder, a screw, a nozzle, and the like. Its main function is to heat and melt the solid plastic raw material, then press the melted plastic into the mold cavity by the rotation of the screw;
and (3) a cooling system: the cooling system is used for controlling the temperature in the injection mold so as to realize rapid cooling and solidification of plastic, generally adopts water circulation to cool the mold, and uniformly distributes the cooling effect in the mold cavity through a waterway structure;
an ejection mechanism: the ejection mechanism is used for ejecting the injection molded product from the mold. It is usually accomplished by pneumatic or hydraulic systems that push the ejector pins to eject the product from the mold cavity.
After the injection molding product is molded, the injection molding product is ejected through an ejection mechanism, but in the ejection process, the injection molding product and the inner wall of a mold cavity form negative pressure due to the fact that the outer wall of the injection molding product is closely attached to the inner wall of the mold cavity, the injection molding product is adsorbed on the injection mold, so that ejection force of the ejector pin needs to be increased to finish demolding, if the wall thickness of the injection molding product is thinner or a certain amount of temperature remains in the injection molding product, the ejector pin with larger force is easy to damage or deform, the injection molding product is scrapped or becomes a semi-finished product needing to be trimmed, and the production quality and the production efficiency of the injection molding product are seriously influenced; according to the size of the injection molding, a plurality of injection molding pieces are often molded in one injection molding die at the same time, but the channel connecting parts for circulating molten plastics are formed to connect the injection molding pieces, so that subsequent shearing work is needed, and the trimming process of the injection molding pieces is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an injection mold system with an injection product trimming function.
In order to solve the problems, the invention adopts the following technical scheme.
An injection mold system with an injection molding product trimming function comprises a plastic injection pipe, an injection mold arranged on a bottom plate and a trimming cooling mechanism; the injection mold is positioned at the left side of the plastic injection pipe, and the ejection mechanism is arranged in the injection mold.
The ejection mechanism comprises a synchronous plate positioned on the inner side of the injection mold, the bottom of the synchronous plate is connected with the extension end of a first hydraulic push rod, the non-extension end of the first hydraulic push rod is fixedly connected with a bottom plate, the top of the synchronous plate is fixedly provided with a plurality of groups of ejector pins and an inflation layering mechanism, the inflation layering mechanism comprises a filling rod which is inserted on the injection mold, the bottom end of the filling rod is hinged with a rotating rod, the other end of the rotating rod is hinged with the synchronous plate, the bottom of the injection mold is fixedly provided with a supporting rod, and the bottom end of the supporting rod is rotationally connected with the rotating rod.
The injection mold comprises an injection upper mold and an injection lower mold, wherein mold cavity plates are arranged on the inner sides of the injection upper mold and the injection lower mold, the top ends of the ejector pins and the filling rods penetrate through and extend to the inner sides of the mold cavity plates in the injection lower mold, and an inflation channel is formed in the injection lower mold and is communicated with the filling rods and the penetration channels of the injection lower mold.
The trimming cooling mechanism comprises a take-out mechanism arranged on a bottom plate, and further comprises two trimming plates positioned on the left side of the injection mold, wherein a supporting frame is arranged on the bottom plate, the two trimming plates are respectively connected with the bottom plate and the supporting frame through telescopic rods and driven by hydraulic rods, the shapes of the opposite sides of the two trimming plates are respectively matched with the shapes of the two mold cavity plates, a cooling cavity is formed in the two trimming plates, and two water guide pipes communicated with the inside of the cooling cavity are fixedly connected to the two trimming plates.
As a further description of the above technical solution:
the injection molding device is characterized in that an injection molding channel and evenly distributed injection molding product forming cavities are formed in the mold cavity plate, the injection molding product forming cavities are communicated with the injection molding channel, the number of the inflation layering mechanism and the number of the ejector pins are equal to that of the injection molding product forming cavities, and the ejector pins and the supporting rods are attached to the inner wall of the injection molding mold.
As a further description of the above technical solution:
the utility model discloses a hydraulic pressure push rod, including mould, mould plastics, the mould is gone up to mould and is gone up to insert to have rather than sliding connection's the pole that cuts off, the bottom of cutting off the pole extends to the inside wall of passageway of moulding plastics to closely laminate with the inner wall of passageway of moulding plastics, fixed mounting has the mounting bracket on the mould of moulding plastics, fixed mounting has second hydraulic push rod on the mounting bracket, and the bottom output and the pole fixed connection that cuts off of second hydraulic push rod.
As a further description of the above technical solution:
the outer surface of the cutting rod is tightly attached to the inner wall of the injection upper die, and the bottom end of the cutting rod is provided with a cutting edge attached to the inner wall of the injection channel.
As a further description of the above technical solution:
the taking-out mechanism comprises two electric guide rails which are respectively arranged in front of and behind the trimming plate, the two electric guide rails are fixedly arranged on the bottom plate, the two electric guide rails are provided with sliding plates, electric push rods which are arranged at equal distances are arranged on the sliding plates, the output ends of the electric push rods are fixedly provided with injection molding sucking discs, the taking-out mechanism further comprises a vacuum pump which is arranged on the supporting frame, and the vacuum pump is connected with the injection molding sucking discs through air guide pipes.
As a further description of the above technical solution:
the number of the electric push rods is the same as that of the injection molding cavities.
As a further description of the above technical solution:
the trimming plate is provided with a trimming cavity with the same shape as the injection molding cavity, the trimming plate at the bottom is provided with a material leakage hole, and the butt joint part of the trimming cavity and the top of the material leakage hole forms a trimming cutting edge.
As a further description of the above technical solution:
the inflatable device also comprises an inflator pump arranged on the supporting frame, and the inflator pump is connected with the inflation channel through an air duct.
As a further description of the above technical solution:
the inflation channel consists of an air guide part and a guide part communicated with the air guide part, wherein the air guide part is horizontally arranged, one end of the guide part, which is far away from the air guide part, is obliquely upwards arranged, the distance between the upper port of the guide part and the inner bottom wall of the injection molding forming cavity is 0.1-0.3 mm, and the overlooking section of the air guide part is wavy.
As a further description of the above technical solution:
the ejector pin comprises an ejector seat fixedly arranged on the synchronous plate, an ejector pin is inserted into the limiting plate fixedly arranged on the injection lower die, and the ejector pin extends to the inner side of the ejector seat and is in sliding connection with the ejector seat.
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, the inflation channel is communicated with the inside of the injection molding cavity, in the injection molding process of ejection molding through the ejector pin, excessive resistance caused by negative pressure of the injection molding and the inner wall of the injection molding cavity is avoided, separation of the injection molding and the mold cavity plate is facilitated, deformation caused by excessive force applied to the contact part of the injection molding by the ejector pin is effectively prevented, the ejector pin plays a protective role on the injection molding during operation of the ejection mechanism, stripping difficulty is reduced, and the injection molding after molding is taken out through the trimming cooling mechanism and trimmed and further cooling work is performed.
(2) According to the scheme, the cutting rod is pressed down through the working of the second hydraulic push rod, the bottom cutting edge of the cutting rod stretches into the injection molding channel, and the injection molding channel is connected with the injection molding cavity to be cut off, so that a plurality of injection molding pieces are cut off in the molding process, subsequent cutting is omitted, and the molding production efficiency of injection molding is improved;
(3) According to the scheme, the injection molding product is clamped and trimmed through the two trimming plates, the cutting edge between the trimming cavity and the leakage hole can further cut off the residual pouring opening of the injection molding product, and the waste material is leaked out through the leakage hole, so that the injection molding quality of the injection molding product is more complete, the subsequent shearing process is reduced, and the workload is saved.
Drawings
FIG. 1 is a schematic elevational cross-sectional view of the present invention;
FIG. 2 is a schematic top view of the injection lower mold of the present invention;
FIG. 3 is a schematic cross-sectional view of the structure of the section D-D of FIG. 2 according to the present invention;
FIG. 4 is a schematic cross-sectional structural view of the section C-C of FIG. 2 in accordance with the present invention;
FIG. 5 is a schematic top cross-sectional view of a mold cavity plate of the present invention;
FIG. 6 is an enlarged schematic view of the portion A of FIG. 3 according to the present invention;
FIG. 7 is an enlarged schematic view of the portion B of FIG. 4 according to the present invention;
FIG. 8 is a schematic view of the structure of a finishing plate of the present invention;
fig. 9 is a schematic view of a right side cross-sectional structure of a finishing plate of the present invention.
The reference numerals in the figures illustrate:
1. a plastic injection tube; 2. an injection mold; 21. injection molding an upper die; 22. injection molding of a lower die; 23. a mold cavity plate; 231. molding a molding cavity of an injection molding product; 232. an injection molding channel; 24. an inflation channel; 241. an air guide part; 242. a guide section; 25. cutting off the rod; 26. a mounting frame; 27. a second hydraulic pushrod; 3. an ejection mechanism; 31. a synchronizing plate; 32. a thimble; 321. a top base; 322. a limiting plate; 323. a push rod; 33. an inflation layering mechanism; 331. a filler rod; 332. a rotating lever; 333. a support rod; 34. a first hydraulic pushrod; 4. trimming and cooling mechanism; 41. a take-out mechanism; 411. an electric guide rail; 412. a sliding plate; 413. an electric push rod; 414. an injection molding piece sucker; 415. a vacuum pump; 42. trimming the plate; 43. a cooling chamber; 44. a water conduit; 45. trimming the cavity; 46. a material leakage hole; 5. an inflator pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;
referring to fig. 1-7, the present invention provides example 1:
an injection mold system with an injection product trimming function comprises a plastic injection pipe 1, an injection mold 2 arranged on a bottom plate and a trimming cooling mechanism 4; the injection molding machine further comprises an ejection mechanism 3, the injection mold 2 is positioned on the left side of the plastic injection pipe 1, and the ejection mechanism 3 is installed inside the injection mold 2.
The ejection mechanism 3 comprises a synchronizing plate 31 positioned on the inner side of the injection mold 2, the bottom of the synchronizing plate 31 is connected with an extension end of a first hydraulic push rod 34, a non-extension end of the first hydraulic push rod 34 is fixedly connected with a bottom plate, the top of the synchronizing plate 31 is fixedly provided with a plurality of groups of ejector pins 32 and an inflation layering mechanism 33, the inflation layering mechanism 33 comprises a filling rod 331 inserted on the injection mold 2, the bottom end of the filling rod 331 is hinged with a rotating rod 332, the other end of the rotating rod 332 is hinged with the synchronizing plate 31, the bottom of the injection mold 2 is fixedly provided with a supporting rod 333, and the bottom end of the supporting rod 333 is rotationally connected with the rotating rod 332.
The injection mold 2 comprises an injection upper mold 21 and an injection lower mold 22, wherein the inner sides of the injection upper mold 21 and the injection lower mold 22 are respectively provided with a mold cavity plate 23, the top ends of the ejector pins 32 and the filling rods 331 penetrate through and extend to the inner sides of the mold cavity plates 23 in the injection lower mold 22, the injection lower mold 22 is provided with an inflation channel 24, and the inflation channel 24 is communicated with the filling rods 331 and the penetration channels of the injection lower mold 22.
The mold cavity plate 23 is provided with injection molding channels 232 and evenly distributed injection molding product forming cavities 231, the injection molding product forming cavities 231 are communicated with the injection molding channels 232, the number of the inflation layering mechanism 33 and the ejector pins 32 is equal to that of the injection molding product forming cavities 231, and the ejector pins 32 and the supporting rods 333 are attached to the inner wall of the injection mold 2.
The plastic injection pipe 1 is used for injecting molten plastic into the injection mold 2 formed by closing the injection upper mold 21 and the injection lower mold 22, when the molten plastic flows into the injection molding cavity 231 through the injection molding channel 232 for cooling molding, the injection upper mold 21 is driven by a hydraulic rod to ascend and separate the mold, then the first hydraulic rod 34 drives the synchronous plate 31 to move upwards, so as to drive the plurality of groups of ejector pins 32 to ascend, and simultaneously the synchronous plate 31 is lifted up to one end of the hinged rotating rod 332 in the ascending process, the other end of the rotating rod 332 descends due to the limitation of the supporting rod 333, so that the filling rod 331 is pulled down, the inflation channel 24 leaks out, the inflation channel 24 is communicated with the inside of the injection molding cavity 231, the excessive resistance caused by the negative pressure of the inner wall of the injection molding cavity 231 is avoided in the process of the ejection molding through the ejector pins 32, the ejection molding of the injection molding is convenient to be separated from the mold cavity plate 23, the ejection mechanism 32 is effectively prevented from applying excessive force to the contact part of the injection molding part so as to deform, the ejection mechanism 3 works, the ejection mechanism is protected, the injection molding difficulty is reduced, and the molded injection molding is cooled by the trimming mechanism 4 and the injection molding is taken out for cooling.
Referring to fig. 4, 5 and 7, the distribution position and arrangement of the air charging channels 24 are shown, the air charging channels 24 are composed of an air guiding portion 241 and a guiding portion 242 communicated with the air guiding portion 241, the air guiding portion 241 is horizontally arranged, one end of the guiding portion 242 away from the air guiding portion 241 is obliquely arranged upwards, and the distance between the upper port of the guiding portion 242 and the inner bottom wall of the injection molding cavity 231 is 0.1 mm-0.3 mm.
Since the guide portion 242 is obliquely provided inside the mold cavity plate 23 on the injection lower mold 22 and the distance between the top of the through hole of the guide portion 242 and the inner bottom wall of the injection molding cavity 231 is 0.1mm to 0.3mm as shown in fig. 7, the communication port between the guide portion 242 and the injection molding cavity 231 can be opened after the small displacement of the pull-down filling rod 331, and the outside is communicated with the injection molding cavity 231, and since the injection molding cavity 231 and the guide portion 242 are communicated, the injection molding is completed and the molten plastic remains at a certain temperature in time, and the plastic is prevented from entering a small gap by the tension of the surface of the solidified plastic under the condition of not receiving a huge pressure.
Wherein, the overlook cross section shape of air guide portion 241 is the wave, because there is certain difference in temperature between outside gas and the injection molding after the high temperature cooling shaping, through the current length of extension air guide portion 241 in mould cavity board 23, let the mould cavity board 23 that receives the injection molding temperature transmission heat or cool down the air that passes through for the temperature of injection gas is close with the temperature of injection molding, thereby avoids causing the local excessive cooling of injection molding to lead to appearing quality problems such as deformation.
Referring to fig. 3 and 6, the ejector pin 32 includes an ejector seat 321 fixedly mounted on the synchronizing plate 31, an ejector pin 323 is inserted into a limiting plate 322 fixedly mounted on the injection lower mold 22, and the ejector pin 323 extends to the inner side of the ejector seat 321 and is slidably connected with the ejector seat 321.
In the process of moving up the synchronizing plate 31, the top seat 321 arranged on the synchronizing plate is driven to move up firstly, and as the bottom of the top rod 323 is inserted into the top seat 321 and is in sliding connection with the top seat 321, the top rod 323 is not directly driven to move up to eject the injection molding product, but after the synchronizing plate 31 is lifted for a small distance, the bottom end of the top rod 323 is contacted with the inner bottom wall of the top seat 321 and then drives the top rod 323 to push up, before the top rod 323 pushes up, the filling rod 331 is pulled down in a linkage way through the rotating rod 332, so that the negative pressure is prevented from being generated when the top rod 323 pushes up the injection molding product before the inflation channel 24 is opened.
Wherein, interlude has rather than sliding connection's cutting rod 25 on the mould 21 of moulding plastics, and the bottom of cutting rod 25 extends to the inside wall of passageway 232 of moulding plastics to closely laminate with the inside wall of passageway 232 of moulding plastics, fixedly mounted with mounting bracket 26 on the mould 21 of moulding plastics, fixedly mounted has second hydraulic push rod 27 on the mounting bracket 26, and the bottom output and the cutting rod 25 fixed connection of second hydraulic push rod 27.
The outer surface of the cutting rod 25 is tightly attached to the inner wall of the injection upper die 21, and the bottom end of the cutting rod 25 is provided with a cutting edge attached to the inner wall of the injection channel 232.
According to the size of the injection molding, the injection mold is used for simultaneously forming a plurality of injection molding pieces in the injection mold, but the channel connecting part for circulating the molten plastics is formed to connect each injection molding piece, in the injection molding process, the cutting rod 25 does not extend into the injection molding channel 232, so that the circulation of the molten plastics is convenient, after the molten plastics is injected, the cutting rod 25 is pressed down by the second hydraulic push rod 27, the bottom cutting edge of the cutting rod 25 extends into the injection molding channel 232, the injection molding channel 232 is connected with the injection molding forming cavity 231 to be cut off, and therefore, the plurality of injection molding pieces are cut off in the forming process, the subsequent cutting work is omitted, and the molding production efficiency of the injection molding is improved.
The scheme also comprises an inflator pump 5 arranged on the supporting frame, and the inflator pump 5 is connected with the inflation channel 24 through an air duct.
According to the invention, the inflation pump 5 can work, the inflation channel 24 is inflated through the air duct, the air pressure intensity in the inflation channel 24 is increased, and the air is filled into the communicated injection molding cavity 231 through the inflation channel 24, so that the injection molding is conveniently separated from the inner wall of the bottom injection molding cavity 231, the ejector pins 32 can conveniently push up, meanwhile, the force of the injection molding is more uniform and the force channel is softer through the air separation, the occurrence of indentation on the surface of the injection molding is avoided, and the ejector pins 32 can be well assisted to work.
Referring to fig. 1, 8 and 9, the present invention further provides embodiment 2 on the basis of embodiment 1:
the trimming cooling mechanism 4 comprises a take-out mechanism 41 arranged on a bottom plate, and further comprises two trimming plates 42 positioned on the left side of the injection mold 2, wherein a supporting frame is arranged on the bottom plate, the two trimming plates 42 are respectively connected with the bottom plate and the supporting frame through telescopic rods and driven by hydraulic rods, the shapes of the opposite sides of the two trimming plates 42 are respectively matched with the shapes of the two mold cavity plates 23, a cooling cavity 43 is formed in the two trimming plates 42, and two water guide pipes 44 communicated with the inside of the cooling cavity 43 are fixedly connected to the two trimming plates 42.
The take-out mechanism 41 comprises two electric guide rails 411 which are respectively positioned at the front and the rear of the trimming plate 42, the two electric guide rails 411 are fixedly arranged on the bottom plate, a sliding plate 412 is arranged on the two electric guide rails 411, electric push rods 413 which are arranged at equal intervals are arranged on the sliding plate 412, an injection molding sucker 414 is fixedly arranged at the output end of the electric push rods 413, the take-out mechanism 41 also comprises a vacuum pump 415 which is arranged on the supporting frame, and the vacuum pump 415 is connected with the injection molding sucker 414 through an air duct; the number of the electric pushers 413 is the same as the number of the injection molding cavities 231.
The two sliding plates 412 are driven to synchronously move to the front and the back of the injection mold 2 through the electric guide rail 411, after the injection mold 2 is separated, the electric push rod 413 is operated to drive the injection molding sucker 414 to extend into the space between the injection upper mold 21 and the injection lower mold 22 to adsorb an ejected injection molding product, then the injection molding product is moved to the left space between the two trimming plates 42, then the two trimming plates 42 are driven to be close to each other through the hydraulic rod to clamp the injection molding product, the deformed part in the taking out process is repaired, meanwhile, the cooling liquid is externally connected with a cooling liquid circulation system through the water guide pipe 44 to cool the internal circulation cooling liquid of the cooling cavity 43, the residual high temperature of the injection molding product is removed, and the injection molding product is formed more firmly.
In the invention, a trimming cavity 45 with the same shape as the injection molding cavity 231 is formed on the trimming plate 42, and a material leakage hole 46 is formed on the trimming plate 42 at the bottom.
Referring to fig. 9, a trimming cutting edge is formed at the junction of the trimming cavity 45 and the top of the weep hole 46;
in the process of clamping and trimming the injection molding through the two trimming plates 42, the cutting edge between the trimming cavity 45 and the leakage hole 46 can further cut off the residual pouring port of the injection molding, and the waste material leaks out through the leakage hole 46, so that the injection molding quality of the injection molding is more complete, the subsequent shearing process is reduced, and the workload is saved.
The above is a preferred embodiment of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (6)
1. An injection mold system with an injection product trimming function comprises a plastic injection pipe (1), an injection mold (2) arranged on a bottom plate and a trimming cooling mechanism (4); still include ejection mechanism (3), its characterized in that: the injection mold (2) is positioned at the left side of the plastic injection pipe (1), and the ejection mechanism (3) is arranged in the injection mold (2);
the ejection mechanism (3) comprises a synchronizing plate (31) positioned at the inner side of the injection mold (2), the bottom of the synchronizing plate (31) is connected with an extension end of a first hydraulic push rod (34), the non-extension end of the first hydraulic push rod (34) is fixedly connected with a bottom plate, the top of the synchronizing plate (31) is fixedly provided with a plurality of groups of ejector pins (32) and an inflation layering mechanism (33), the inflation layering mechanism (33) comprises a filling rod (331) inserted on the injection mold (2), the bottom end of the filling rod (331) is hinged with a rotating rod (332), the other end of the rotating rod (332) is hinged with the synchronizing plate (31), the bottom of the injection mold (2) is fixedly provided with a supporting rod (333), and the bottom end of the supporting rod (333) is rotationally connected with the rotating rod (332);
the injection mold (2) comprises an injection upper mold (21) and an injection lower mold (22), wherein mold cavity plates (23) are arranged on the inner sides of the injection upper mold (21) and the injection lower mold (22), the top ends of the ejector pins (32) and the filling rods (331) penetrate through and extend to the inner sides of the mold cavity plates (23) in the injection lower mold (22), an inflation channel (24) is formed in the injection lower mold (22), and the inflation channel (24) is communicated with the filling rods (331) and the penetration channels of the injection lower mold (22);
the inflation channel (24) consists of an air guide part (241) and a guide part (242) communicated with the air guide part (241), the air guide part (241) is horizontally arranged, one end of the guide part (242) away from the air guide part (241) is obliquely upwards arranged, the distance between the upper port of the guide part (242) and the inner bottom wall of the injection molding cavity (231) is 0.1-0.3 mm, and the top-view cross section of the air guide part (241) is wave-shaped;
the trimming cooling mechanism (4) comprises a take-out mechanism (41) arranged on a bottom plate, two trimming plates (42) arranged on the left side of the injection mold (2), a supporting frame is arranged on the bottom plate, the two trimming plates (42) are respectively connected with the bottom plate and the supporting frame through telescopic rods and driven by hydraulic rods, the shapes of the opposite sides of the two trimming plates (42) are respectively matched with the shapes of the two mold cavity plates (23), a cooling cavity (43) is formed in the two trimming plates (42), and two water guide pipes (44) communicated with the inside of the cooling cavity (43) are fixedly connected to the two trimming plates (42);
the mold cavity plate (23) is provided with injection molding channels (232) and injection molding product forming cavities (231) which are uniformly distributed, the injection molding product forming cavities (231) are communicated with the injection molding channels (232), the number of the inflation layering mechanisms (33) and the number of the ejector pins (32) are equal to that of the injection molding product forming cavities (231), and the ejector pins (32) and the supporting rods (333) are attached to the inner wall of the injection mold (2);
the cutting rod (25) which is connected with the injection upper die (21) in a sliding mode is inserted in the injection upper die (21), the bottom end of the cutting rod (25) extends to the inner side wall of the injection channel (232) and is tightly attached to the inner wall of the injection channel (232), a mounting frame (26) is fixedly arranged on the injection upper die (21), a second hydraulic push rod (27) is fixedly arranged on the mounting frame (26), and the bottom output end of the second hydraulic push rod (27) is fixedly connected with the cutting rod (25);
the outer surface of the cutting rod (25) is tightly attached to the inner wall of the injection upper die (21), and the bottom end of the cutting rod (25) is provided with a cutting edge attached to the inner wall of the injection channel (232).
2. An injection mold system with injection trimming function according to claim 1, wherein: the utility model discloses a vacuum pump, including taking out mechanism (41), including trimming board (42) around, take out mechanism (41) including being located respectively two electronic guide rail (411), and two electronic guide rail (411) are all fixed mounting on the bottom plate, two all install sliding plate (412) on electronic guide rail (411), install electric putter (413) that the equidistance was arranged on sliding plate (412), the output fixed mounting of electric putter (413) has injection molding sucking disc (414), take out mechanism (41) still includes vacuum pump (415) of installing on the support frame, vacuum pump (415) link to each other with injection molding sucking disc (414) through the air duct.
3. An injection mold system with injection trimming function according to claim 2, wherein: the number of the electric push rods (413) is the same as that of the injection molding cavities (231).
4. An injection mold system with injection trimming function according to claim 1, wherein: the trimming plate (42) is provided with a trimming cavity (45) which has the same shape as the injection molding product forming cavity (231), the trimming plate (42) at the bottom is provided with a material leakage hole (46), and the butt joint part of the trimming cavity (45) and the top of the material leakage hole (46) forms a trimming cutting edge.
5. An injection mold system with injection trimming function according to claim 1, wherein: the inflatable device also comprises an inflator pump (5) arranged on the supporting frame, and the inflator pump (5) is connected with the inflating channel (24) through an air duct.
6. An injection mold system with injection trimming function according to claim 1, wherein: the ejector pin (32) comprises an ejector seat (321) fixedly arranged on the synchronous plate (31), a limiting plate (322) is fixedly arranged on the injection lower die (22), an ejector pin (323) is inserted in the limiting plate, and the ejector pin (323) extends to the inner side of the ejector seat (321) and is in sliding connection with the ejector seat (321).
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| CN112959614A (en) * | 2021-02-04 | 2021-06-15 | 王梓羽 | Injection mold convenient to open mold |
| CN115366342A (en) * | 2022-07-21 | 2022-11-22 | 长兴优浩科技有限公司 | Injection mold convenient to cooling drawing of patterns |
| CN115782091A (en) * | 2022-12-02 | 2023-03-14 | 吉安创福精密制造有限公司 | Injection mold device and demolding method for plastic parts |
| CN116638738A (en) * | 2023-07-27 | 2023-08-25 | 康立光学科技（广州）有限公司 | Plastic cover body forming equipment of anti-fog shield |
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|---|---|---|---|---|
| CN112959614A (en) * | 2021-02-04 | 2021-06-15 | 王梓羽 | Injection mold convenient to open mold |
| CN115366342A (en) * | 2022-07-21 | 2022-11-22 | 长兴优浩科技有限公司 | Injection mold convenient to cooling drawing of patterns |
| CN115782091A (en) * | 2022-12-02 | 2023-03-14 | 吉安创福精密制造有限公司 | Injection mold device and demolding method for plastic parts |
| CN116638738A (en) * | 2023-07-27 | 2023-08-25 | 康立光学科技（广州）有限公司 | Plastic cover body forming equipment of anti-fog shield |
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