CN113459434A - Injection mold - Google Patents
Injection mold Download PDFInfo
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- CN113459434A CN113459434A CN202110555912.5A CN202110555912A CN113459434A CN 113459434 A CN113459434 A CN 113459434A CN 202110555912 A CN202110555912 A CN 202110555912A CN 113459434 A CN113459434 A CN 113459434A
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- die
- seat
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- groove
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
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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
- B29C45/83—Lubricating means
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C2045/384—Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molds, in particular to an injection mold, which comprises a lower fixed seat, a lower die seat, an upper fixed seat, an injection port, a die cavity, a female die, an upper shunting groove, a positioning hole, a male die, a positioning column, an ejection mechanism and a lower shunting groove, wherein the lower die seat is fixedly arranged at the upper end of the lower fixed seat, the upper die seat is movably arranged at the upper end of the lower die seat, the upper fixed seat is fixedly arranged at the upper end of the upper die seat, the injection port is arranged at the center of the outer surface of the upper end of the upper fixed seat, the injection port penetrates through and extends to the center of the outer surface of the lower end of the upper die seat, the die cavity is arranged at the periphery of the injection port at the outer surface of the lower end of the upper die seat, the female die is movably arranged at the inner lower end of the die cavity, the injection mold can effectively clear air between a male die and a female die, reduce the offset between the upper die seat and the lower die seat and ensure the molding precision, the upper die base can be prevented from being provided with the die when the die is opened, and the risk of falling and damage of the die is reduced.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold.
Background
The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping, stretching and other methods in industrial production.
The utility model relates to a high-precision injection mold (CN 207509656U), which comprises an injection port, a positioning ring, an upper gland, a high-precision main mold core, a supporting column, a bottom bearing plate, a rapid mold opening device, a connecting plate, a heat dissipation plate, an air-through column and an exhaust machine, wherein the bottom surface of the positioning ring is jointed with the upper surface of the upper gland, the injection mold is structurally and independently provided with the rapid mold opening device, injection molding is positioned through the positioning ring, injection molding liquid is guided into the high-precision main mold core from the injection port to be fixed, when the mold needs to be opened after being formed and cooled, a handle can be pressed down, the handle drives a hand wheel to rotate and is meshed with an action wheel disc, the upper top plate and the lower pressing plate are driven to open through the matching of the two action wheel discs and a transmission chain to prop up the high-precision main mold core and the heat dissipation plate, then a finished product is taken out of the high-precision main mold core, thereby, the pressing type manual mold opening is adopted without using a special mold opening tool, the mold opening of the formed mold is more convenient.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: to concavo-convex mould closing film injection mold, can leave the clearance between die and the terrace die after the upper and lower die holders are closed, can persist the air in the clearance, lead to producing slight skew between the upper and lower die holders because of atmospheric pressure promotes when moulding plastics, reduce the precision of moulding, simultaneously when the die sinking, the upper die holder appears the tape mould phenomenon easily, has the model impaired risk of falling.
To this end, an injection mold is proposed.
Disclosure of Invention
The invention aims to provide an injection mold, which can effectively remove air between a concave mold and a convex mold, reduce the offset between an upper mold base and a lower mold base, ensure the molding precision, prevent the upper mold base from being provided with the mold during mold opening, reduce the risk of falling and damage of the mold and solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an injection mold comprises a lower fixed seat, a lower die seat, an upper fixed seat, an injection port, a die cavity, a female die, an upper splitter box, a positioning hole, a male die, a positioning column, an ejection mechanism and a lower splitter box, wherein the lower die seat is fixedly arranged at the upper end of the lower fixed seat, the upper die seat is movably arranged at the upper end of the lower die seat, the upper fixed seat is fixedly arranged at the upper end of the upper die seat, the injection port is arranged at the center of the outer surface of the upper end of the upper fixed seat, the injection port penetrates through and extends to the center of the outer surface of the lower end of the upper die seat, the outer surface of the lower end of the upper die seat is arranged around the injection port, the female die is movably arranged at the lower end inside the die cavity, the outer surface of the lower end of the upper die seat is arranged between the injection port and the die cavity, the positioning hole is arranged at the edge of the outer surface of the lower end of the upper die seat, the ejection mechanism is arranged at the center of the outer surface of the upper end of the lower die seat, the male die is fixedly arranged on the outer surface of the upper end of the lower die holder and positioned around the ejection mechanism, the lower splitter box is arranged on the outer surface of the upper end of the lower die holder and positioned between the ejection mechanism and the male die, and the positioning column is fixedly arranged at the corner of the outer surface of the upper end of the lower die holder;
the die comprises a die cavity, a die cavity and a spring column, wherein a limit rod is fixedly mounted at the edge of the inner upper end of the die cavity, the outer surface of the limit rod is sleeved with the spring column, the upper end and the lower end of the spring column are fixedly connected with the die cavity and a female die respectively, the length of the spring column is twice of that of the limit rod in an unfolding state, and the outer surface around the upper die base is provided with ventilation openings which are communicated with the die cavity.
In the traditional concave-convex die film-closing injection mold, after the upper and lower die holders are closed, a gap is reserved between the female die and the male die, and air is reserved in the gap, so that fine deviation is generated between the upper and lower die holders due to air pressure pushing during injection, and the molding precision is reduced;
when the injection molding device works, the upper die base and the lower die base are combined, the positioning column on the lower die base penetrates through the positioning hole on the upper die base, so that horizontal displacement limitation is performed between the closed upper die base and the closed lower die base, the closed male die penetrates into the die cavity, the female die in the die cavity is positioned at the lowest end of the die cavity under the action of elastic force of the spring column, so that the female die is tightly attached to the male die, the phenomenon that the upper die base and the lower die base are deviated due to strong air pressure generated during injection molding caused by a gap between the female die and the male die is avoided, so that the injection molding precision is ensured, then, the molten material is injected between the upper die base and the lower die base through the injection port, the injected molten material flows into the space between the female die and the male die through a diversion channel formed after the upper diversion channel and the lower diversion channel are closed, the molten material is continuously injected, the female die is upwards pushed and pushed, so that the female die contracts towards the interior of the die cavity to continuously compress the spring column, thereby make and produce the clearance between die and the terrace die, the storage shaping of the melt of being convenient for, simultaneously along with the shrink of die extrude the die cavity outside with the inside air of die cavity, avoid atmospheric pressure too high to lead to the die to take place the displacement, move up to the back of contacting with the gag lever post when the die, the gag lever post is contradicted the die, prevent its further movement, ensure to form certain volume between die and the terrace die and be used for the melt shaping, after the melt shaping, separate upper die base and die holder, the die is not receiving the power of applying the melt this moment, the spring post resets, promote the die downstream, thereby the melt part after the shaping promotes to break away from with the die cavity, and then the die cavity and the die have reduced the adsorption affinity of the melt after the shaping, the risk of die area mould has been reduced.
Preferably, the movable shaft is movably mounted at the center of the upper end in the die cavity, the upper end of the movable shaft penetrates through and extends into the die holder, the clockwork spring is sleeved at the upper end of the outer surface of the movable shaft, the clockwork spring is located inside the upper die holder, the movable sleeve is sleeved at the lower end of the movable shaft, spiral grains are arranged at the outer surface of the movable sleeve and the lower end of the outer surface of the movable shaft, the lower end of the movable sleeve and the center of the outer surface of the upper end of the female die are fixedly connected, the connecting ring is sleeved at the center of the outer surface of the movable shaft, spring arms are fixedly mounted on the outer surfaces of the two sides of the connecting ring, and the spring arms are far away from one side of the connecting ring and fixedly mounted with heavy balls.
The molten material is easy to attach to the surface of the female die after being molded, so that the female die can be in a die-carrying phenomenon when the upper die base is separated from the lower die base, and the model can be damaged by falling;
when the mould works, the female mould moves upwards in the mould cavity in cooperation with injection moulding, at the same time, the movable sleeve at the upper end of the female mould is pushed to displace along the movable shaft, because the spiral grains are arranged between the movable sleeve and the movable shaft, and the movable sleeve and the female mould are fixed and can not rotate, so that the movable sleeve and the movable shaft are driven to rotate when being displaced, the clockwork spring is tightened under the condition of rotating the movable shaft, when the upper mould base is separated from the lower mould base, the female mould is pushed to move downwards in cooperation with the resetting of the spring column, at the same time, the movable sleeve and the movable shaft move reversely, and under the condition that the clockwork spring resets, the movable shaft is driven to rotate reversely and rapidly, the movable shaft drives the connecting ring to rotate while rotating, so that the spring arm on the connecting ring rotates, and because the spring arm has elasticity, irregular swinging can be generated during rotation, thereby driving the heavy ball to knock the female mould, and utilizing the heavy ball to knock the female mould to generate vibration, therefore, the female die is separated from the model by vibration, and the risk of the female die with the die is reduced.
Preferably, the inner wall lower extreme movable mounting who moulds plastics the mouth has the activity ring, equal fixed mounting all around of lower extreme surface of activity ring has the stripping and slicing, the inside one side that is close to the mouth of moulding plastics of die cavity has seted up the spout, the die is close to one side surface movable mounting who moulds plastics the mouth and has the depression bar, and the depression bar is located the inside of spout, equal movable mounting has the pivot between depression bar and the die and between the center department of depression bar and the spout, depression bar and activity ring are the magnetism material.
The during operation, under the effect that the mould chamber was followed to the cooperation die shifts up, can exert an ascending power to the depression bar when the die shifts up, because be connected through the pivot between the center department of depression bar and the spout, make the depression bar form lever structure, thereby make the one end upwarp that the depression bar is close to the die, and the one end that the depression bar is close to the mouth of moulding plastics descends, and combine depression bar and the characteristic that the activity ring is the magnetic material, move down along with the one end that the depression bar is close to the mouth of moulding plastics and utilize magnetic attraction to drive the activity ring along moulding plastics mouthful inside and move down, it runs through among supreme splitter box and the lower splitter box to the stripping and slicing on the activity ring, thereby form the cutting off to the melt of injecting into.
Preferably, the ejection mechanism comprises a movable groove, a screw rod, an ejection rod and a compression spring, the movable groove is arranged at the center of the outer surface of the upper end of the lower die holder, the screw rod is movably mounted inside the movable groove, the ejection rod is sleeved at the upper end of the outer surface of the screw rod, a spiral groove is formed in the outer surface of the ejection rod, the movable groove extends out of the upper end of the screw rod, and the compression spring is fixedly mounted between the outer surface of the lower end of the ejection rod and the movable groove.
When the die is in operation, after the upper die holder and the lower die holder are closed, an ejector rod in the ejection mechanism is extruded by the upper die holder to shrink into the movable groove, at the moment, the compression spring shrinks and deforms, the screw rod extends into the injection molding opening, when the injection molding is carried out, the upper die holder is separated from the lower die holder, and the ejector rod is not extruded by the upper die holder any more, the ejector rod is ejected out of the movable groove under the condition that the compression spring is reset, the ejector rod is used for ejecting the formed model, so that the demoulding operation between the male die and the model is completed, the ejection rod is relatively displaced with the screw rod when being ejected out, and the screw rod is driven to rotate under the action of the spiral groove, thereby make the hob separate at the outside model of hob with the parcel, the hob can apply a decurrent pulling force to the model this moment to help model and die drawing of patterns have further reduced the risk of die area mould.
Preferably, the ejection mechanism further comprises an oil groove, a piston plate, a push rod, an oil inlet and an oil injection port, wherein the oil groove is formed in the lower die holder and located right below the movable groove, the piston plate is movably mounted at the upper end of the inner portion of the oil groove, the push rod is fixedly mounted between two sides of the outer surface of the lower end of the ejector rod and the piston plate, the lower end of the screw rod penetrates through and extends to the lower end of the inner portion of the oil groove, the lower end of the outer surface of the periphery of the screw rod is arranged at the oil inlet, the outer surface of the upper end of the screw rod is arranged at the oil injection port, and the oil injection port is communicated with the oil inlet.
When the injection molding machine works, after the upper die base and the lower die base are closed, an ejector rod in the ejection mechanism is extruded by the upper die base and shrinks to the inside of the movable groove, the ejector rod pushes the piston plate by the push rod at the moment, the piston plate extrudes lubricating oil in the oil groove, the lubricating oil in the oil groove is extruded to the screw rod through the oil inlet and is sprayed out from the oil spraying opening, the sprayed lubricating oil is attached to the inner wall of the injection molding opening, the adhesion between molten materials and the injection molding opening can be effectively reduced, meanwhile, the upper die base and the lower die base are separated, the ejector rod is ejected out of the movable groove under the condition that the compression spring resets, the ejector rod pulls the piston plate to move upwards by the push rod, the outside air is sucked into the oil groove through the oil spraying opening, and the internal pressure of the oil groove is stable.
Preferably, the positioning column penetrates through the positioning hole, the male die penetrates through the female die, and the upper splitter box and the lower splitter box are in one-to-one correspondence and are closed to form a cylindrical groove body.
The positioning column on the lower die holder penetrates through the positioning hole in the upper die holder, so that horizontal displacement is limited between the closed upper die holder and the closed lower die holder, and injected molten materials flow into a space between the female die and the male die through a flow distribution channel formed after the upper flow distribution groove and the lower flow distribution groove are closed.
Compared with the prior art, the invention has the beneficial effects that:
1. air between the concave-convex die is effectively removed, the offset between the upper die holder and the lower die holder is reduced, the molding precision is guaranteed, the upper die holder can be prevented from being provided with the die when the die is opened, and the risk of falling and damage of the die is reduced;
2. lubricating oil in the oil groove is extruded into the screw rod through the oil inlet and is sprayed out from the oil spray port, and the sprayed lubricating oil is attached to the inner wall of the injection port, so that the adhesion between the molten material and the injection port can be effectively reduced;
3. the movable ring is driven by magnetic attraction to move downwards along the inside of the injection molding opening until the cutting block on the movable ring penetrates through the upper splitter box and the lower splitter box, so that injected molten materials are cut off.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an upper mold base according to the present invention;
FIG. 3 is a schematic structural view of the lower die holder of the present invention;
FIG. 4 is a cross-sectional view of a-a of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;
FIG. 6 is an enlarged view of the invention at B of FIG. 4;
FIG. 7 is a schematic structural diagram of an ejection mechanism according to the present invention;
fig. 8 is a view of the screw bar of the present invention in combination with an oil jet.
In the figure: 1. a lower fixed seat; 2. a lower die holder; 3. an upper die holder; 4. an upper fixed seat; 5. an injection molding port; 6. a mold cavity; 61. a movable shaft; 62. a clockwork spring; 63. helical thread; 64. a movable sleeve; 65. a connecting ring; 66. a spring arm; 67. heavy balls; 68. air holes are formed; 7. a female die; 8. an upper splitter box; 9. a limiting rod; 10. a spring post; 11. positioning holes; 12. a male die; 13. a positioning column; 14. an ejection mechanism; 141. a movable groove; 142. a screw rod; 143. ejecting the rod; 144. a compression spring; 145. an oil sump; 146. a piston plate; 147. a push rod; 148. an oil inlet; 149. an oil injection port; 15. a lower splitter box; 16. a movable ring; 17. a pressure lever; 18. a rotating shaft; 19. a chute; 20. and (6) cutting into blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution:
an injection mold, as shown in fig. 1 to 4, comprises a lower fixed seat 1, a lower die seat 2, an upper die seat 3, an upper fixed seat 4, an injection port 5, a die cavity 6, a female die 7, an upper diversion trench 8, a positioning hole 11, a male die 12, a positioning column 13, an ejection mechanism 14 and a lower diversion trench 15, wherein the lower die seat 2 is fixedly arranged at the upper end of the lower fixed seat 1, the upper die seat 3 is movably arranged at the upper end of the lower die seat 2, the upper fixed seat 4 is fixedly arranged at the upper end of the upper die seat 3, the injection port 5 is arranged at the center of the outer surface of the upper end of the upper fixed seat 4, the injection port 5 penetrates through and extends to the center of the outer surface of the lower end of the upper die seat 3, the die cavity 6 is arranged at the periphery of the injection port 5, the female die 7 is movably arranged at the lower end inside of the die cavity 6, the outer surface of the lower end of the upper diversion trench 8 is arranged between the injection port 5 and the die cavity 6, the positioning hole 11 is formed in the corner of the outer surface of the lower end of the upper die holder 3, the ejection mechanism 14 is arranged in the center of the outer surface of the upper end of the lower die holder 2, the male die 12 is fixedly arranged on the outer surface of the upper end of the lower die holder 2 and located around the ejection mechanism 14, the lower diversion channel 15 is formed in the outer surface of the upper end of the lower die holder 2 and located between the ejection mechanism 14 and the male die 12, and the positioning column 13 is fixedly arranged at the corner of the outer surface of the upper end of the lower die holder 2;
the die comprises a die cavity 6, a female die 7, a spring column 10, a limiting rod 9, a vent port 68, a vent hole 68, a spring and a spring, wherein the limiting rod 9 is fixedly installed at the corners of the inner upper end of the die cavity 6, the spring and the spring, the spring and the die are respectively, the vent port 68, the outer surface of the periphery of the upper die cavity 2 is communicated with the die cavity 6;
in the traditional concave-convex die film-closing injection mold, after the upper and lower die holders are closed, a gap is reserved between the female die 7 and the male die 12, and air is reserved in the gap, so that fine deviation is generated between the upper and lower die holders due to air pressure pushing during injection molding, and the molding precision is reduced;
when the injection molding device works, the upper die holder 3 and the lower die holder 2 are combined, the positioning column 13 on the lower die holder 2 penetrates into the positioning hole 11 on the upper die holder 3, so that the upper die holder 3 and the lower die holder 2 are horizontally displaced and limited after being closed, the male die 12 after being closed penetrates into the die cavity 6, the female die 7 in the die cavity 6 is positioned at the lowest end of the die cavity 6 under the action of elastic force of the spring column 10, so that the female die 7 is tightly attached to the male die 12, the phenomenon that the upper die holder 3 and the lower die holder 2 are deviated due to strong air pressure generated during injection due to a gap between the female die 7 and the male die 12 is avoided, so that the injection molding precision is ensured, then, molten material is injected between the upper die holder 3 and the lower die holder 2 through the injection port 5, and the injected molten material flows into a distribution channel formed after the upper distribution channel 8 and the lower distribution channel 15 are closed and then flows into the female die 7 and the male die 12, along with the continuous injection of the molten material, the molten material is utilized to upwards push the female die 7, so that the female die 7 is contracted towards the inside of the die cavity 6 to continuously compress the spring column 10, a gap is generated between the female die 7 and the male die 12, the molten material is convenient to store and mold, meanwhile, air in the die cavity 6 is extruded out of the die cavity 6 along with the contraction of the female die 7, the displacement of the female die 7 caused by overhigh air pressure is avoided, when the female die 7 moves upwards to be in contact with the limiting rod 9, the limiting rod 9 is abutted against the female die 7 to prevent the female die 7 from further moving, a certain volume is ensured to be formed between the female die 7 and the male die 12 for molten material molding, after the molten material molding, the upper die base 3 and the lower die base 2 are separated, at the moment, the female die 7 does not receive the force applied by the molten material, the spring column 10 resets to push the female die 7 to move downwards, so that the molded molten material is partially pushed to be separated from the die cavity 6, and further the adsorption force of the molded molten material by the die cavity 6 and the female die 7 is reduced, the risk of the female die 7 being brought into the die is reduced.
As an embodiment of the present invention, as shown in fig. 4 and 5, a movable shaft 61 is movably mounted at the center of the upper end inside the die cavity 6, the upper end of the movable shaft 61 penetrates through and extends into the upper die holder 3, a spiral spring 62 is sleeved on the upper end of the outer surface of the movable shaft 61, the spiral spring 62 is located inside the upper die holder 3, a movable sleeve 64 is sleeved on the lower end of the movable shaft 61, spiral threads 63 are respectively formed on the outer surface of the movable sleeve 64 and the lower end of the outer surface of the movable shaft 61, the lower end of the movable sleeve 64 is fixedly connected with the center of the outer surface of the upper end of the die 7, a connecting ring 65 is sleeved on the center of the outer surface of the movable shaft 61, spring arms 66 are fixedly mounted on the outer surfaces of both sides of the connecting ring 65, and a heavy ball 67 is fixedly mounted on one side of the spring arms 66 away from the connecting ring 65;
the molten material is easy to attach to the surface of the female die 7 after being molded, so that when the upper die base 3 is separated from the lower die base 2, the female die 7 can be in a die-carrying phenomenon, and the model can be damaged by falling;
during operation, the female die 7 moves upwards in the die cavity 6 during the matched injection molding, at this time, the movable sleeve 64 at the upper end of the female die 7 is pushed to displace along the movable shaft 61, because the spiral grains 63 are arranged between the movable sleeve 64 and the movable shaft 61, and the movable sleeve 64 and the female die 7 are fixed and can not rotate at the same time, so that the movable sleeve 64 and the movable shaft 61 are driven to rotate when displacing, the clockwork spring 62 is tightened under the condition that the movable shaft 61 rotates, when the upper die base 3 is separated from the lower die base 2, the matched spring column 10 resets to push the female die 7 to move downwards, at this time, the movable sleeve 64 and the movable shaft 61 move in the reverse direction, and under the condition that the clockwork spring 62 resets, the movable shaft 61 rotates in the reverse direction and rapidly rotates, the movable shaft 61 rotates and simultaneously drives the connecting ring 65 to rotate, thereby enabling the spring arm 66 on the connecting ring 65 to rotate, because the spring arm 66 has elasticity, irregular swinging can be generated during the rotation, thereby drive heavy ball 67 and strike die 7, utilize heavy ball 67 to strike die 7 and make die 7 appear vibrating to utilize the vibration to make die 7 break away from with the model, reduced the risk of die 7 area mould.
As an embodiment of the present invention, as shown in fig. 4 and 6, a movable ring 16 is movably mounted at the lower end of the inner wall of the injection port 5, the periphery of the outer surface of the lower end of the movable ring 16 is fixedly provided with cut blocks 20, a sliding groove 19 is formed in one side of the mold cavity 6 close to the injection port 5, a pressure lever 17 is movably mounted on the outer surface of one side of the female mold 7 close to the injection port 5, the pressure lever 17 is located in the sliding groove 19, rotating shafts 18 are movably mounted between the pressure lever 17 and the female mold 7 and between the center of the pressure lever 17 and the sliding groove 19, and the pressure lever 17 and the movable ring 16 are both made of magnetic materials;
when the injection molding device works, under the action that the concave die 7 moves upwards along the die cavity 6, an upward force is applied to the compression bar 17 when the concave die 7 moves upwards, and the center of the compression bar 17 is connected with the sliding groove 19 through the rotating shaft 18, so that the compression bar 17 forms a lever structure, one end of the compression bar 17 close to the concave die 7 is tilted upwards, one end of the compression bar 17 close to the injection molding opening 5 is lowered, and the characteristics that the compression bar 17 and the movable ring 16 are made of magnetic materials are combined, the movable ring 16 is driven to move downwards along the inside of the injection molding opening 5 by magnetic suction force along with the downward movement of one end of the compression bar 17 close to the injection molding opening 5 until the cutting block 20 on the movable ring 16 penetrates through the upper diversion groove 8 and the lower diversion groove 15, and injected molten materials are cut off.
As an embodiment of the present invention, as shown in fig. 7, the ejection mechanism 14 includes a movable groove 141, a screw rod 142, an ejection rod 143, and a compression spring 144, the movable groove 141 is disposed at the center of the outer surface of the upper end of the lower die base 2, the screw rod 142 is movably mounted inside the movable groove 141, the ejection rod 143 is sleeved on the upper end of the outer surface of the screw rod 142, a spiral groove is formed on the outer surface of the ejection rod 143, the upper end of the screw rod 142 extends out of the movable groove 141, and the compression spring 144 is fixedly mounted between the outer surface of the lower end of the ejection rod 143 and the movable groove 141;
during operation, after the upper die holder 3 and the lower die holder 2 are closed, the ejector rod 143 of the ejection mechanism 14 is squeezed by the upper die holder 3 and shrinks into the movable groove 141, at this time, the compression spring 144 shrinks and deforms, the screw rod 142 extends into the injection port 5, after injection molding, the upper die holder 3 is separated from the lower die holder 2, at this time, the ejector rod 143 is not squeezed by the upper die holder 3 any more, the ejector rod 143 is ejected out of the movable groove 141 under the condition that the compression spring 144 is reset, the molded mold is ejected by the ejector rod 143, so that the demolding operation between the male die 12 and the mold is completed, the ejector rod 143 displaces relative to the screw rod 142 while ejecting, and the screw rod 142 is driven to rotate under the action of the spiral groove, so that the screw rod 142 is separated from the mold wrapped outside the screw rod 142, at this time, the screw rod 142 applies a downward pulling force to the mold, thereby helping the mould to demold with the female mould 7 and further reducing the risk of the female mould 7 with the mould.
As an embodiment of the present invention, as shown in fig. 7 to 8, the ejection mechanism 14 further includes an oil groove 145, a piston plate 146, a push rod 147, an oil inlet 148 and an oil spray opening 149, the oil groove 145 is disposed in the lower die base 2 and located right below the movable groove 141, the piston plate 146 is movably mounted at the upper end of the interior of the oil groove 145, the push rod 147 is fixedly mounted between both sides of the outer surface of the lower end of the ejection rod 143 and the piston plate 146, the lower end of the screw rod 142 penetrates and extends to the lower end of the interior of the oil groove 145, the oil inlet 148 is disposed at the lower end of the outer surface of the periphery of the screw rod 142, the oil spray opening 149 is disposed at the outer surface of the upper end of the screw rod 142, and the oil spray opening 149 is communicated with the oil inlet 148;
during operation, after the upper die holder 3 and the lower die holder 2 are closed, the ejector rod 143 of the ejection mechanism 14 is squeezed by the upper die holder 3 and shrinks into the movable groove 141, at this time, the ejector rod 143 pushes the piston plate 146 by the push rod 147, so that the piston plate 146 squeezes the lubricating oil in the oil groove 145, the lubricating oil in the oil groove 145 is squeezed into the screw rod 142 through the oil inlet 148 and is ejected from the oil nozzle 149, the ejected lubricating oil is attached to the inner wall of the injection nozzle 5, thereby effectively reducing the adhesion between the molten material and the injection nozzle 5, and when the upper die holder 3 is separated from the lower die holder 2, the ejector rod 143 is ejected out of the movable groove 141 under the condition that the compression spring 144 is reset, the ejector rod 143 pulls the piston plate 146 to move upwards by the push rod 147, thereby sucking the outside air into the oil groove 145 through the oil nozzle 149, and further ensuring the stable pressure inside the oil groove 145.
The working principle is as follows:
when the injection molding device works, the upper die holder 3 and the lower die holder 2 are combined, the positioning column 13 on the lower die holder 2 penetrates into the positioning hole 11 on the upper die holder 3, so that the upper die holder 3 and the lower die holder 2 are horizontally displaced and limited after being closed, the male die 12 after being closed penetrates into the die cavity 6, the female die 7 in the die cavity 6 is positioned at the lowest end of the die cavity 6 under the action of elastic force of the spring column 10, so that the female die 7 is tightly attached to the male die 12, the phenomenon that the upper die holder 3 and the lower die holder 2 are deviated due to strong air pressure generated during injection due to a gap between the female die 7 and the male die 12 is avoided, so that the injection molding precision is ensured, then, molten material is injected between the upper die holder 3 and the lower die holder 2 through the injection port 5, and the injected molten material flows into a distribution channel formed after the upper distribution channel 8 and the lower distribution channel 15 are closed and then flows into the female die 7 and the male die 12, along with the continuous injection of the melting material, the melting material is utilized to upwards push the female die 7, so that the female die 7 is contracted towards the inside of the die cavity 6 to continuously compress the spring column 10, a gap is generated between the female die 7 and the male die 12, the melting material is convenient to store and form, meanwhile, air in the die cavity 6 is extruded out of the die cavity 6 along with the contraction of the female die 7, the female die 7 is prevented from displacing due to overhigh air pressure, after the female die 7 moves upwards to be contacted with the limiting rod 9, the limiting rod 9 is abutted against the female die 7 to prevent the female die 7 from further moving, a certain volume is ensured to be formed between the female die 7 and the male die 12 for melting material forming, under the action that the female die 7 moves upwards along the die cavity 6, an upward force is exerted on the compression rod 17, and because the center of the compression rod 17 is connected with the sliding groove 19 through the rotating shaft 18, the compression rod 17 forms a lever structure, so that one end of the compression rod 17 close to the female die 7 upwarps, and one end of the pressure lever 17 close to the injection port 5 descends, and in combination with the characteristic that the pressure lever 17 and the movable ring 16 are both made of magnetic materials, as the end of the pressure lever 17 close to the injection port 5 moves downwards, the movable ring 16 is driven to move downwards along the inside of the injection port 5 by using magnetic attraction force until the cutting block 20 on the movable ring 16 penetrates into the upper diversion channel 8 and the lower diversion channel 15, so as to cut off the injected melt, after the melt is molded, the upper die base 3 and the lower die base 2 are separated, at the moment, the female die 7 does not receive the force applied by the melt, the spring column 10 resets, the female die 7 is pushed to move downwards, so that the molded melt is partially pushed to be separated from the die cavity 6, the adsorption force of the die cavity 6 and the female die 7 on the molded melt is further reduced, the risk of the female die 7 with the die is reduced, the female die 7 moves upwards in the die cavity 6 when the injection molding is matched, at the moment, the movable sleeve 64 at the upper end of the female die 7 is pushed to displace along the movable shaft 61, because the spiral thread 63 is arranged between the movable sleeve 64 and the movable shaft 61, and the movable sleeve 64 and the female die 7 are fixed and can not rotate, when the movable sleeve 64 and the movable shaft 61 are displaced, the movable shaft 61 is driven to rotate, the clockwork spring 62 is tightened under the condition that the movable shaft 61 rotates, when the upper die base 3 is separated from the lower die base 2, the matched spring column 10 is reset to push the female die 7 to move downwards, at the moment, the movable sleeve 64 and the movable shaft 61 move reversely, and under the condition that the clockwork spring 62 is reset, the movable shaft 61 is driven to rotate reversely and rapidly, the movable shaft 61 drives the connecting ring 65 to rotate while rotating, so that the spring arm 66 on the connecting ring 65 rotates, and due to the elasticity of the spring arm 66, irregular swinging can be generated during rotation, so as to drive the heavy ball 67 to knock the female die 7, the female die 7 is knocked by the heavy ball 67, so that the female die 7 vibrates, and the female die 7 is separated from the model by vibration, the risk of the die-carrying of the female die 7 is reduced, after the upper die holder 3 and the lower die holder 2 are closed, the ejector rod 143 in the ejection mechanism 14 is extruded and contracted by the upper die holder 3 to the inside of the movable groove 141, at this time, the compression spring 144 is contracted and deformed, the screw rod 142 extends into the injection port 5, after injection molding, the upper die holder 3 is separated from the lower die holder 2, at this time, the ejector rod 143 is not extruded by the upper die holder 3 any more, the ejector rod 143 is ejected out of the movable groove 141 under the condition that the compression spring 144 is reset, the molded die is ejected by the ejector rod 143, so that the demolding operation between the male die 12 and the die is completed, the ejector rod 143 is relatively displaced with the screw rod 142 while being ejected out, the screw rod 142 is driven to rotate under the action of the spiral groove, so that the screw rod 142 is separated from the die wrapped outside the screw rod 142, at this time, the screw rod 142 applies a downward pulling force to the die, therefore, the demolding of the mold and the female mold 7 is assisted, the risk of the mold carrying of the female mold 7 is further reduced, when the upper mold base 3 and the lower mold base 2 are closed, the ejector rod 143 in the ejection mechanism 14 is extruded and contracted to the inside of the movable groove 141 by the extrusion of the upper mold base 3, at the moment, the ejector rod 143 pushes the piston plate 146 by the push rod 147, so that the piston plate 146 extrudes lubricating oil in the oil groove 145, the lubricating oil in the oil groove 145 is extruded into the screw rod 142 through the oil inlet 148 and is ejected out of the oil nozzle 149, the ejected lubricating oil is attached to the inner wall of the injection nozzle 5, the adhesion between the molten material and the injection nozzle 5 can be effectively reduced, meanwhile, when the upper mold base 3 is separated from the lower mold base 2, the ejector rod 143 is ejected out of the movable groove 141 under the condition that the compression spring 144 is reset, the ejector rod 143 pulls the piston plate 146 to move upwards by the push rod 147, so that outside air is sucked into the oil groove 145 through the oil nozzle 149, thereby ensuring that the pressure inside the oil sump 145 is stable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An injection mold is characterized by comprising a lower fixing seat (1), a lower die seat (2), an upper die seat (3), an upper fixing seat (4), an injection molding opening (5), a die cavity (6), a female die (7), an upper diversion trench (8), a positioning hole (11), a male die (12), a positioning column (13), an ejection mechanism (14) and a lower diversion trench (15), wherein the lower die seat (2) is fixedly arranged at the upper end of the lower fixing seat (1), the upper die seat (3) is movably arranged at the upper end of the lower die seat (2), the upper fixing seat (4) is fixedly arranged at the upper end of the upper die seat (3), the injection molding opening (5) is arranged at the center of the outer surface of the upper end of the upper fixing seat (4), the injection molding opening (5) penetrates through and extends to the center of the outer surface of the lower end of the upper die seat (3), the die cavity (6) is arranged at the outer surface of the lower end of the upper die seat (3) and is positioned around the injection molding opening (5), the female die (7) is movably arranged at the lower end inside the die cavity (6), the upper shunting groove (8) is formed in the outer surface of the lower end of the upper die base (3) and is positioned between the injection molding port (5) and the die cavity (6), the positioning hole (11) is formed in the corner of the outer surface of the lower end of the upper die base (3), the ejection mechanism (14) is formed in the center of the outer surface of the upper end of the lower die base (2), the male die (12) is fixedly arranged on the outer surface of the upper end of the lower die base (2) and is positioned around the ejection mechanism (14), the lower shunting groove (15) is formed in the outer surface of the upper end of the lower die base (2) and is positioned between the ejection mechanism (14) and the male die (12), and the positioning column (13) is fixedly arranged at the corner of the outer surface of the upper end of the lower die base (2);
the die is characterized in that a limiting rod (9) is fixedly mounted at the edge of the upper end inside the die cavity (6), a spring column (10) is sleeved on the outer surface of the limiting rod (9), the upper end and the lower end of the spring column (10) are fixedly connected with the die cavity (6) and the female die (7) respectively, the length of the spring column (10) is twice that of the limiting rod (9) in the unfolding state, ventilating openings (68) are formed in the outer surface of the periphery of the upper die base (2), and the ventilating openings (68) are communicated with the die cavity (6).
2. The injection mold according to claim 1, wherein a movable shaft (61) is movably mounted at the center of the inner upper end of the mold cavity (6), the upper end of the movable shaft (61) penetrates through and extends into the upper mold base (3), a spring (62) is sleeved on the upper end of the outer surface of the movable shaft (61), the spring (62) is located inside the upper mold base (3), a movable sleeve (64) is sleeved on the lower end of the movable shaft (61), spiral grains (63) are respectively arranged on the outer surface of the movable sleeve (64) and the lower end of the outer surface of the movable shaft (61), the lower end of the movable sleeve (64) is fixedly connected with the center of the outer surface of the upper end of the female mold (7), a connecting ring (65) is sleeved on the center of the outer surface of the movable shaft (61), and spring arms (66) are respectively and fixedly mounted on the outer surfaces of two sides of the connecting ring (65), and a heavy ball (67) is fixedly arranged on one side of the spring arm (66) far away from the connecting ring (65).
3. The injection mold according to claim 1, characterized in that, the inner wall lower extreme movable mounting who moulds plastics mouthful (5) has activity ring (16), equal fixed mounting all around of lower extreme surface of activity ring (16) has stripping piece (20), spout (19) have been seted up to the inside one side that is close to mouthful (5) of moulding plastics of die cavity (6), die (7) are close to one side surface movable mounting who moulds plastics mouthful (5) have depression bar (17), and depression bar (17) are located the inside of spout (19), equal movable mounting has pivot (18) between depression bar (17) and die (7) and between the center department of depression bar (17) and spout (19), depression bar (17) and activity ring (16) are the magnetic material.
4. The injection mold according to claim 1, wherein the ejection mechanism (14) comprises a movable groove (141), a spiral rod (142), an ejection rod (143) and a compression spring (144), the movable groove (141) is arranged at the center of the outer surface of the upper end of the lower mold base (2), the spiral rod (142) is movably mounted inside the movable groove (141), the ejection rod (143) is sleeved on the upper end of the outer surface of the spiral rod (142), a spiral groove is formed in the outer surface of the ejection rod (143), the upper end of the spiral rod (142) extends out of the movable groove (141), and the compression spring (144) is fixedly mounted between the outer surface of the lower end of the ejection rod (143) and the movable groove (141).
5. An injection mold according to claim 4, characterized in that the ejection mechanism (14) further comprises an oil groove (145), a piston plate (146), a push rod (147), an oil inlet (148) and an oil jet (149), the oil groove (145) is arranged in the lower die holder (2) and is positioned right below the movable groove (141), the piston plate (146) is movably arranged at the upper end of the interior of the oil groove (145), the push rod (147) is fixedly arranged between the two sides of the outer surface of the lower end of the ejector rod (143) and the piston plate (146), the lower end of the screw rod (142) penetrates and extends to the inner lower end of the oil groove (145), the oil inlet (148) is arranged at the lower end position of the peripheral outer surface of the screw rod (142), the oil injection port (149) is formed in the outer surface of the upper end of the spiral rod (142), and the oil injection port (149) is communicated with the oil inlet (148).
6. An injection mold according to claim 1, wherein the positioning column (13) penetrates through the positioning hole (11), the male mold (12) penetrates through the female mold (7), and the upper splitter box (8) and the lower splitter box (15) correspond to each other in a one-to-one manner and are closed to form a cylindrical groove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110555912.5A CN113459434A (en) | 2021-05-21 | 2021-05-21 | Injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110555912.5A CN113459434A (en) | 2021-05-21 | 2021-05-21 | Injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN113459434A true CN113459434A (en) | 2021-10-01 |
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ID=77871128
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110555912.5A Pending CN113459434A (en) | 2021-05-21 | 2021-05-21 | Injection mold |
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| Country | Link |
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| CN (1) | CN113459434A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454454A (en) * | 2022-02-12 | 2022-05-10 | 浙江飞翼智能设备有限公司 | Plastic extrusion die stock mould device of uncapping |
| CN117962247A (en) * | 2024-04-01 | 2024-05-03 | 苏州瑞泰精密塑胶有限公司 | Injection molding die |
| CN117962247B (en) * | 2024-04-01 | 2024-06-07 | 苏州瑞泰精密塑胶有限公司 | Injection molding die |
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| JPH11254491A (en) * | 1998-03-09 | 1999-09-21 | Tensho Electric Industries Co Ltd | Mold |
| US20070243286A1 (en) * | 2006-04-18 | 2007-10-18 | Cheng Uei Precision Industry Co., Ltd. | Angular ejector mechanism and injection mold with the same |
| EP3357665A1 (en) * | 2017-02-06 | 2018-08-08 | Essilor International | Injection molds including de-gating devices and methods for producing molded articles using the same |
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| CN114454454A (en) * | 2022-02-12 | 2022-05-10 | 浙江飞翼智能设备有限公司 | Plastic extrusion die stock mould device of uncapping |
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