CN117140880B - Injection mold convenient for taking out injection molding part - Google Patents
Injection mold convenient for taking out injection molding part Download PDFInfo
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- CN117140880B CN117140880B CN202311421140.1A CN202311421140A CN117140880B CN 117140880 B CN117140880 B CN 117140880B CN 202311421140 A CN202311421140 A CN 202311421140A CN 117140880 B CN117140880 B CN 117140880B
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- gas
- plate
- mold core
- injection molding
- piston
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 76
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 37
- 229920003023 plastic Polymers 0.000 claims abstract description 37
- 238000001802 infusion Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 25
- 238000009826 distribution Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- 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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an injection mold, in particular to an injection mold convenient for taking out an injection molding part. The plastic injection molding device comprises a female mold plate and a male mold plate, wherein a female mold core is arranged at the bottom of the female mold plate, a male mold core is arranged at the top of the male mold plate, a base is arranged at the bottom of the male mold plate, a male mold core is arranged inside the male mold core, an infusion port is formed in the male mold core, the infusion port is communicated with the female mold core and an injection port in the female mold plate, a piston piece is longitudinally arranged in the infusion port in a sliding manner, and the piston rod is matched with an injection molding passage in an injection mold convenient for taking out the injection molding piece.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold convenient for taking out an injection molding part.
Background
Injection molding refers to injection molding, which is a molding method of injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation in operation, multiple colors and varieties, simplified and complex shapes, large to small sizes, accurate product size, easy updating of products, and capability of manufacturing products with complex shapes, and is suitable for the molding processing fields of mass production, products with complex shapes and the like. And stirring the completely melted plastic material by a screw at a certain temperature, injecting the plastic material into a die cavity by high pressure, and cooling and solidifying the plastic material to obtain a molded product. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods.
Chinese patent publication No. CN106313438B discloses a quick assembling and disassembling mechanism for ejector pins and an injection mold using the same. The ejector pin quick assembly disassembly mechanism comprises an ejector pin, a positioning plate, a supporting plate, a movable mold bottom plate and a pressing plate for supporting the ejector pin, wherein a first through hole for accommodating the pressing plate is correspondingly formed in the supporting plate, the pressing plate can be detachably fixed on the positioning plate, and a second through hole for allowing the pressing plate to penetrate through to extend into the first through hole is formed in the movable mold bottom plate. The ejector pin is supported by the pressing plate, the first through hole is formed in the supporting plate, the second through hole is formed in the movable die bottom plate, and the pressing plate can extend into the first through hole through the second through hole and is detachably connected with the positioning plate so as to fix the ejector pin, so that the ejector pin is convenient to install; conversely, when dismantling the thimble, can take out the clamp plate from first through-hole and second through-hole, can conveniently dismantle the thimble simultaneously, make thimble easy dismounting, time short, raise the efficiency is high, and it is convenient to maintain, and then improves injection molding efficiency.
According to the injection molding machine, the ejector pins are arranged, so that the part can be rapidly ejected out by the ejector pins after injection molding, and the part is separated from the mold, so that the injection molding part is taken out. However, the ejector pin needs an additional driving device to drive in the use process, and the two sides of the die are usually provided with hydraulic mechanisms, so that the driving device is difficult to install when encountering some places with narrow spaces, and the use of the die is affected.
Disclosure of Invention
The invention aims to provide an injection mold convenient for taking out an injection molding part, so as to solve the problems in the background art.
In order to achieve the above purpose, the injection mold convenient for taking out the injection molding piece comprises a female mold plate and a male mold plate, wherein a female mold core is arranged at the bottom of the female mold plate, a male mold core is arranged at the top of the male mold plate, a base is arranged at the bottom of the male mold plate, a male mold core is arranged in the male mold core, an infusion port is formed in the male mold core, the infusion port is communicated with the injection port on the female mold core and the female mold plate, a piston piece is longitudinally arranged in the infusion port in a sliding manner, the piston piece moves downwards and compresses gas when plastic is injected into the male mold core, one end of the piston piece is connected with a gas conveying piece, the gas conveying piece is communicated with the male mold core, and compressed gas is conveyed into the male mold core by the gas conveying piece when the plastic in the male mold core is solidified into the injection molding piece, so that the injection molding piece is separated from the male mold core under the action of air pressure.
As a further improvement of the technical scheme, the piston piece comprises a piston cavity arranged in the male die core, a piston plate is arranged in the piston cavity in a sliding mode, a piston rod is fixedly connected to the top end of the piston plate, the top end of the piston rod stretches into the infusion port, a connecting spring is fixedly connected to the bottom end of the piston plate, a fixing plate is fixedly connected to the bottom end of the connecting spring, a gas transmission hole is formed in the side wall of the piston cavity, located below the fixing plate, and a valve is arranged at the gas transmission hole.
As a further improvement of the technical scheme, the bottom of the fixed plate is provided with a one-way exhaust valve, the one-way exhaust valve is used for conveying gas above the fixed plate to the lower side of the fixed plate when the piston plate moves downwards, an air inlet channel is formed in the position, above the fixed plate, of the side wall of the piston cavity, and a one-way air inlet valve is arranged in the air inlet channel and used for conveying external gas into the piston cavity when the piston plate moves upwards.
As a further improvement of the technical scheme, the valve comprises a baffle, the baffle is positioned at a gas transmission hole of the side wall of the piston cavity, a straight rod is slidably arranged at the bottom of the baffle, the bottom end of the straight rod is fixedly arranged at the bottom of the piston cavity, a compression spring is sleeved on the outer ring of the straight rod, the top of the baffle is fixedly connected with a push rod, and the push rod longitudinally slides to penetrate through the fixed plate.
As a further improvement of the technical scheme, the gas transmission piece comprises a gas transmission pipe, one end of the gas transmission pipe is communicated with a gas transmission hole, the other end of the gas transmission pipe is communicated with a gas distribution disc, the gas distribution disc is fixedly arranged at the bottom of the male mold core, and exhaust holes are formed in the top of the gas distribution disc and the top of the male mold core.
As a further improvement of the technical scheme, the exhaust hole at the top of the gas distribution plate is communicated with the gas distribution plate; the exhaust hole at the top of the male mold core is communicated with the male mold core; the inside of the exhaust hole at the top of the male mold core is provided with a one-way valve.
As a further improvement of the technical scheme, the valve is a valve plate, the bottom of the male mold core is fixedly connected with a heat conducting rod, the heat conducting rod penetrates through the gas distribution disc, a uniform heat pipe is arranged on the side wall, facing the gas pipe, of the heat conducting rod, a memory spring is fixedly arranged at the inner end of the uniform heat pipe, one end of the memory spring is fixedly connected with the valve plate, and one end of the valve plate slides into the gas pipe.
As a further improvement of the technical scheme, the low-temperature shape of the memory spring is in a compressed state, and the high-temperature shape is in an extended state.
As a further improvement of the technical scheme, the side wall of the heat conducting rod extends to the gas pipe to form a heat conducting plate, one end of the heat conducting plate is fixedly connected with a heat conducting sleeve, and the heat conducting sleeve is sleeved on the outer ring of the gas pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. in this make things convenient for injection molding to take out's injection mold, through the cooperation of piston rod and injection molding passageway, when plastics liquid is in injecting into the public mold core, the piston rod blocks plastics liquid for plastics liquid promotes the piston rod and removes, thereby produces compressed gas in the bottom of fixed plate, when injection molding is fixed, utilizes compressed gas's impact force to blow injection molding, so that reduce the dependence to drive arrangement.
2. In this make things convenient for injection mold that injection molding took out, through the cooperation of gas-supply pipe and heat conduction pole, make the temperature of injection molding can be conducted to memory spring department to utilize the switching between memory spring compression state and the extension state to control the inside break-make of gas-supply pipe, so that blow injection molding after the solidification of injection molding again.
3. In this make things convenient for injection mold that injection molding took out, the valve plate not only can control compressed gas's flow, can also cooperate with the heat conduction sleeve pipe, through heat conduction pole and heat conduction sleeve pipe with heat conduction to the compressed gas department that is blocked, makes compressed gas heat altered into hot compressed gas to when injection molding glues at public mold core lateral wall, utilize hot compressed gas to carry out slight softening to injection molding, so that accelerate the taking out of injection molding.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram illustrating the overall structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a male mold insert according to the present invention;
FIG. 4 is an enlarged schematic view of the structure A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the structure of the exhaust hole of the present invention;
FIG. 6 is a schematic diagram of a cross-sectional structure of a male mold insert according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 6B according to the present invention;
FIG. 8 is a schematic structural view of a heat conducting sleeve according to the present invention;
fig. 9 is a schematic structural view of a valve plate of the present invention.
The meaning of each reference sign in the figure is:
100. a master template; 101. a female mold core;
110. a male template; 111. a male mold core; 112. a base; 120. a male mold core; 121. an infusion port;
130. a piston chamber; 131. a piston plate; 132. a piston rod; 133. a connecting spring; 134. a fixing plate; 135. a gas delivery hole; 136. a one-way exhaust valve; 137. an air inlet channel; 138. a one-way air inlet valve; 140. a gas pipe; 141. an air distribution plate; 142. an exhaust hole;
150. a baffle; 151. a straight rod; 152. a compression spring; 153. a push rod;
160. a heat conducting sleeve; 161. a heat conduction rod; 162. a heat equalizing pipe; 163. a memory spring; 164. a valve plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 and 2, an injection mold for facilitating the removal of an injection molding is provided, and includes a female mold plate 100 and a male mold plate 110, wherein a female mold core 101 is disposed at the bottom of the female mold plate 100, a male mold core 111 is disposed at the top of the male mold plate 110, and a base 112 is disposed at the bottom of the male mold plate. The male mold core 111 is internally provided with a male mold core 120, the male mold core 111 is internally provided with an infusion port 121, and the infusion port 121 is communicated with the female mold core 101 and the injection molding port on the female mold plate 100. When the plastic injection molding device is used, injection molding is performed on the injection molding opening at the top of the female die plate 100 through the plastic extruder, molten plastic liquid can enter the infusion opening 121 through the injection molding opening at the top of the female die plate 100 and the injection molding channel in the female die core 101, then flows into the male die core 120 between the female die core 101 and the male die core 111 through the infusion opening 121, and is solidified into a part after being cooled. The top of the base 112 may be provided with a thimble that is driven to move up to eject the injection molding when it is desired to disengage the injection molding from the mold. However, when the driving device is used in places with a small space, the driving device is difficult to install, and the use of the die is affected.
For this purpose, a piston member is longitudinally slidably disposed in the infusion port 121, and moves downward and compresses gas when plastic is injected into the male mold core 120, one end of the piston member is connected with a gas transmission member, the gas transmission member is communicated with the male mold core 120, and when the plastic in the male mold core 120 is solidified into an injection molded part, the gas transmission member transmits the compressed gas into the male mold core 120, so that the injection molded part is separated from the male mold core 120 under the action of air pressure.
Fig. 3 to 7 show embodiment 1 of the present invention.
As shown in fig. 3, the piston member includes a piston cavity 130 formed inside the male mold core 111, a piston plate 131 is slidably disposed in the piston cavity 130, a piston rod 132 is fixedly connected to the top end of the piston plate 131, the top end of the piston rod 132 extends into the infusion port 121, a connecting spring 133 is fixedly connected to the bottom end of the piston plate 131, and a fixing plate 134 is fixedly connected to the bottom end of the connecting spring 133. In fig. 4, a gas delivery hole 135 is formed in the side wall of the piston chamber 130 below the fixing plate 134, and a valve is disposed at the gas delivery hole 135.
As shown in fig. 3 and 6, the bottom of the fixed plate 134 is provided with a one-way exhaust valve 136, the one-way exhaust valve 136 is used for conveying the gas above the fixed plate 134 to the lower side of the fixed plate 134 when the piston plate 131 moves downwards, an air inlet channel 137 is formed in the side wall of the piston cavity 130 above the fixed plate 134, and a one-way air inlet valve 138 is arranged in the air inlet channel 137 and is used for conveying the external gas into the piston cavity 130 when the piston plate 131 moves upwards.
As shown in fig. 4, 6 and 7, the valve includes a baffle 150, the baffle 150 is located at the gas delivery hole 135 on the side wall of the piston cavity 130, a straight rod 151 is slidably disposed at the bottom of the baffle 150, the bottom end of the straight rod 151 is fixedly disposed at the bottom of the piston cavity 130, a compression spring 152 is sleeved on the outer ring of the straight rod 151, a top rod 153 is fixedly connected to the top of the baffle 150, and the top rod 153 longitudinally slides to penetrate through the fixing plate 134.
As shown in fig. 3-5, the air delivery member includes an air delivery pipe 140, one end of the air delivery pipe 140 is communicated with the air delivery hole 135, the other end is communicated with an air distribution plate 141, the air distribution plate 141 is fixedly arranged at the bottom of the male mold core 120, and the top of the air distribution plate 141 and the top of the male mold core 120 are both provided with an air exhaust hole 142. Wherein:
the exhaust hole 142 positioned at the top of the air distribution plate 141 is communicated with the air distribution plate 141; the exhaust hole 142 positioned at the top of the male mold core 120 communicates with the male mold core 120; a one-way valve may be disposed in the vent hole 142 to prevent plastic liquid at the male mold core 120 from dripping through the vent hole 142.
That is, through the cooperation of the piston rod 132 and the injection molding passage, when the plastic liquid is injected into the male mold core 120, the piston rod 132 blocks the plastic liquid, so that the plastic liquid pushes the piston rod 132 to move, thereby generating compressed gas at the bottom of the fixing plate 134, and when the injection molding is fixed, the injection molding is blown by the impact force of the compressed gas, so as to reduce the dependence on the driving device.
Thus, in operation, molten plastic liquid flows into the infusion port 121 through the injection port at the top of the master mold plate 100 and the injection channel inside the master mold core 101, and then flows into the male mold core 120 through the infusion port 121. In this process, since the piston rod 132 extends into the infusion port 121, the piston rod 132 drives the piston plate 131 to move downward under the pushing force of the plastic liquid, and the air above the fixing plate 134 is pressed below the fixing plate 134 after the piston plate 131 moves downward. At this time, since the baffle 150 blocks the gas delivery hole 135, the gas is compressed only at the bottom of the fixing plate 134.
After the plastic liquid fills the male mold core 120, the extruder continues to extrude the melted plastic liquid, and the liquid can only flow to the piston rod 132, so that a larger thrust is further generated to the piston rod 132, and the piston rod 132 drives the piston plate 131 to move further downwards. In the downward movement process, the piston plate 131 abuts against the ejector rod 153, and the ejector rod 153 drives the baffle 150 to move downward to open the air delivery hole 135. At this time, the compressed air at the bottom of the fixing plate 134 can slowly enter the air pipe 140 through the air delivery hole 135 and then enter the air distribution plate 141. Then, the air pressure in the air distribution plate 141 is gradually increased, and then the injection molding piece at the top of the male mold core 120 is blown through the air exhaust hole 142, so that the injection molding piece is separated from the side wall of the male mold core 120.
When the female mold plate 100 and the male mold plate 110 are separated, the two transverse plates at the top of the male mold core 111 are controlled to move by the hydraulic rod, and the transfusion opening 121 is exposed to the outside (the part is the same as the mold principle in the prior art). When the injection molding piece is separated from the male mold core 120, the waste material remained in the infusion port 121 is also separated, and at this time, the piston plate 131 drives the piston rod 132 to move upwards and reset through the elasticity of the connecting spring 133.
Example 2 this example discloses another embodiment of a valve, as shown in fig. 8 and 9:
the valve is the valve plate 164, and the bottom fixedly connected with heat conduction pole 161 of public mold core 120, heat conduction pole 161 run through divide the gas disc 141 to set up, and heat conduction pole 161 is provided with the equalizing pipe 162 towards the lateral wall of gas-supply pipe 140, and the inner of equalizing pipe 162 is fixed to be provided with memory spring 163, and the one end fixed connection valve plate 164 of memory spring 163, the one end slip of valve plate 164 penetrate in the gas-supply pipe 140. The heat conductive rod 161 is preferably made of a material having high heat conductive property, such as copper. The low-temperature shape of the memory spring 163 is a compressed state, and the high-temperature shape is an expanded state.
During operation, due to the contact relation between the heat conducting rod 161 and the male mold core 120, part of heat of the plastic liquid is transferred to the heat conducting rod 161 through the male mold core 120, the heat conducting rod 161 transfers the heat to the heat equalizing pipe 162, and the memory spring 163 in the heat equalizing pipe 162 changes into an extended state when encountering heat, so that the valve plate 164 is pushed into the air conveying pipe 140, and at the moment, the valve plate 164 seals the air conveying pipe 140. Thus, when the piston plate 131 moves down, compressed gas is stored in the gas pipe 140, and does not enter the vent hole 142, and thus does not blow the injection molded article that has not yet solidified. When the injection molding piece is cooled, the temperature of the male mold core 120 is also reduced, and the temperatures of the heat conducting rod 161 and the heat equalizing pipe 162 are also reduced, and at the same time, the memory spring 163 is changed into a low-temperature compressed state, so that the valve plate 164 is pulled, the gas pipe 140 is opened, and compressed gas in the gas pipe 140 can be discharged to the injection molding piece through the exhaust hole 142, so that the injection molding piece is blown down.
Therefore, through the cooperation of the air pipe 140 and the heat conducting rod 161, the temperature of the injection molding piece can be conducted to the memory spring 163, so that the switching between the compression state and the extension state of the memory spring 163 is utilized to control the on-off of the inside of the air pipe 140, and the injection molding piece is blown after being solidified.
Furthermore, the side wall of the heat conducting rod 161 extends to the gas pipe 140 to form a heat conducting plate, one end of the heat conducting plate is fixedly connected with a heat conducting sleeve 160, and the heat conducting sleeve 160 is sleeved on the outer ring of the gas pipe 140. In this way, the temperature of the heat conducting rod 161 can be conducted to the heat conducting sleeve 160, so that the heat conducting sleeve 160 is heated and then is heated with the gas inside the gas pipe 140, and when the injection molding piece is adhered to the side wall of the male mold core 120, the relatively hot gas can slightly soften the injection molding piece, so that the injection molding piece is quickly separated from the side wall of the male mold core 120.
That is, the valve plate 164 not only controls the flow of the compressed gas, but also cooperates with the heat-conducting sleeve 160, and heat is conducted to the blocked compressed gas through the heat-conducting rod 161 and the heat-conducting sleeve 160, so that the compressed gas is heated to be a hot compressed gas, and when the injection molding member is adhered to the side wall of the male mold core 120, the injection molding member is slightly softened by the hot compressed gas, so that the removal of the injection molding member is accelerated.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides an injection mold that convenient injection molding took out, includes master template (100) and public template (110), master template (100) bottom is provided with master model benevolence (101), public template (110) top is provided with public mould benevolence (111), and the bottom is provided with base (112), public mould benevolence (111) are inside to have public mould core (120), infusion mouth (121) are seted up to public mould benevolence (111) are inside, infusion mouth (121) communicate with the injection molding mouth on master model benevolence (101) and master template (100), its characterized in that: a piston piece is longitudinally arranged in the infusion port (121) in a sliding manner, the piston piece moves downwards and compresses gas when plastic is injected into the male mold core (120), one end of the piston piece is connected with a gas conveying piece, the gas conveying piece is communicated with the male mold core (120), and when the plastic in the male mold core (120) is solidified into an injection molding piece, the gas conveying piece conveys the compressed gas into the male mold core (120) so that the injection molding piece is separated from the male mold core (120) under the action of air pressure;
the piston piece comprises a piston cavity (130) formed in the male die core (111), a piston plate (131) is arranged in the piston cavity (130) in a sliding mode, a piston rod (132) is fixedly connected to the top end of the piston plate (131), the top end of the piston rod (132) stretches into the infusion port (121), a connecting spring (133) is fixedly connected to the bottom end of the piston plate (131), a fixing plate (134) is fixedly connected to the bottom end of the connecting spring (133), a gas transmission hole (135) is formed in the side wall of the piston cavity (130) below the fixing plate (134), and a valve is arranged at the gas transmission hole (135);
the bottom of the fixed plate (134) is provided with a one-way exhaust valve (136), the one-way exhaust valve (136) is used for conveying gas above the fixed plate (134) to the lower part of the fixed plate (134) when the piston plate (131) moves downwards, an air inlet channel (137) is formed in the side wall of the piston cavity (130) above the fixed plate (134), and a one-way air inlet valve (138) is arranged in the air inlet channel (137) and is used for conveying external gas into the piston cavity (130) when the piston plate (131) moves upwards;
the valve comprises a baffle (150), the baffle (150) is positioned at a gas transmission hole (135) on the side wall of the piston cavity (130), a straight rod (151) is slidably arranged at the bottom of the baffle (150), the bottom end of the straight rod (151) is fixedly arranged at the bottom of the piston cavity (130), a compression spring (152) is sleeved on the outer ring of the straight rod (151), a push rod (153) is fixedly connected to the top of the baffle (150), and the push rod (153) longitudinally slides to penetrate through a fixing plate (134);
the gas transmission piece comprises a gas transmission pipe (140), one end of the gas transmission pipe (140) is communicated with a gas transmission hole (135), the other end of the gas transmission pipe is communicated with a gas distribution disc (141), the gas distribution disc (141) is fixedly arranged at the bottom of the male mold core (120), and exhaust holes (142) are formed in the top of the gas distribution disc (141) and the top of the male mold core (120);
the exhaust hole (142) positioned at the top of the air distribution disc (141) is communicated with the air distribution disc (141); the exhaust hole (142) positioned at the top of the male mold core (120) is communicated with the male mold core (120); a one-way valve is arranged in an exhaust hole (142) at the top of the male mold core (120), so that plastic liquid at the male mold core (120) is prevented from dripping through the exhaust hole (142);
through the cooperation of the piston rod (132) and the injection molding channel, when plastic liquid is injected into the male mold core (120), the piston rod (132) blocks the plastic liquid, so that the plastic liquid pushes the piston rod (132) to move, compressed gas is generated at the bottom of the fixing plate (134), and when the injection molding piece is immobilized, the injection molding piece is blown by the impact force of the compressed gas, so that the dependence on a driving device is reduced;
when the plastic mold works, molten plastic liquid flows into the infusion port (121) through an injection molding port at the top of the female mold plate (100) and an injection molding channel in the female mold core (101), and then flows into the male mold core (120) through the infusion port (121); in the process, as the piston rod (132) extends into the infusion port (121), the piston rod (132) drives the piston plate (131) to move downwards under the thrust of plastic liquid, and after the piston plate (131) moves downwards, the gas above the fixed plate (134) is pressed below the fixed plate (134), and at the moment, the gas is only compressed at the bottom of the fixed plate (134) because the gas transmission hole (135) is blocked by the baffle plate (150);
after the plastic liquid is filled in the male mold core (120), the plastic liquid is continuously extruded and melted by the plastic extruder, the liquid flows to the piston rod (132) at the moment, so that larger thrust is further generated on the piston rod (132), the piston rod (132) drives the piston plate (131) to move downwards, in the downward moving process, the piston plate (131) abuts against the ejector rod (153), the ejector rod (153) drives the baffle plate (150) to move downwards so as to open the air delivery hole (135), at the moment, compressed air at the bottom of the fixed plate (134) slowly enters the air delivery pipe (140) through the air delivery hole (135) and then enters the air distribution disc (141), then the air pressure in the air distribution disc (141) is gradually increased, and then the injection molding piece at the top of the male mold core (120) is blown through the air exhaust hole (142), so that the injection molding piece is separated from the side wall of the male mold core (120);
when the female template (100) and the male template (110) are separated, the two transverse plates at the top of the male die core (111) are controlled to move through the hydraulic rod, and the infusion port (121) is exposed outside; when the injection molding piece is separated from the male mold core (120), the waste material remained in the infusion port (121) is separated along with the injection molding piece, and at the moment, the piston plate (131) drives the piston rod (132) to move upwards to reset through the elasticity of the connecting spring (133);
the valve is a valve plate (164), the bottom of the male mold core (120) is fixedly connected with a heat conducting rod (161), the heat conducting rod (161) penetrates through the gas distribution disc (141) and is provided with a uniform heat pipe (162) towards the side wall of the gas pipe (140), the inner end of the uniform heat pipe (162) is fixedly provided with a memory spring (163), one end of the memory spring (163) is fixedly connected with the valve plate (164), and one end of the valve plate (164) slides into the gas pipe (140);
the low-temperature shape of the memory spring (163) is a compressed state, and the high-temperature shape is an extended state;
the side wall of the heat conducting rod (161) extends to the gas pipe (140) to form a heat conducting plate, one end of the heat conducting plate is fixedly connected with a heat conducting sleeve (160), the heat conducting sleeve (160) is sleeved on the outer ring of the gas pipe (140), wherein the temperature of the heat conducting rod (161) is conducted to the heat conducting sleeve (160), so that the heat conducting sleeve (160) is heated, then the heat conducting sleeve and gas in the gas pipe (140) are heated, and when an injection molding piece is adhered to the side wall of the male mold core (120), the relatively hot gas slightly softens the injection molding piece, so that the injection molding piece is rapidly separated from the side wall of the male mold core (120);
when the plastic liquid heat-conducting device works, due to the contact relation between the heat-conducting rod (161) and the male mold core (120), part of heat of the plastic liquid can be transferred to the heat-conducting rod (161) through the male mold core (120), the heat-conducting rod (161) transfers the heat to the heat-equalizing pipe (162), and the memory spring (163) in the heat-equalizing pipe (162) is changed into an extending state when encountering heat, so that the valve plate (164) is pushed into the air pipe (140), and at the moment, the valve plate (164) seals the air pipe (140); thus, when the piston plate (131) moves downwards, compressed gas is stored in the gas pipe (140), and does not enter the exhaust hole (142) at the moment, and does not blow the injection molding part which is not solidified yet;
when the injection molding piece is cooled, the temperature of the male mold core (120) is reduced, and the temperatures of the heat conducting rod (161) and the heat equalizing pipe (162) are also reduced, and the memory spring (163) is changed into a low-temperature compressed state, so that the valve plate (164) is pulled, the gas pipe (140) is opened, and compressed gas in the gas pipe (140) can be discharged to the injection molding piece through the exhaust hole (142), so that the injection molding piece is blown down.
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| JPS63312819A (en) * | 1987-06-16 | 1988-12-21 | Isuzu Motors Ltd | Air vent apparatus of mold for molding plastic |
| DE10336954A1 (en) * | 2003-08-07 | 2005-03-17 | MöllerTech GmbH | Demolding and ejection of molded components from a plastics processing machine involves feeding liquid gas to a recess in tool half below component where fluid gas expands to gaseous state for ejection |
| JP2012240315A (en) * | 2011-05-20 | 2012-12-10 | Panasonic Corp | Injection molding die for cylindrical molded article |
| CN215969854U (en) * | 2021-09-14 | 2022-03-08 | 安徽东银科技有限公司 | Injection mold for bowl cover |
| CN114248406A (en) * | 2021-12-27 | 2022-03-29 | 董野 | Injection mold with automatic demoulding mechanism |
| CN218366270U (en) * | 2022-09-22 | 2023-01-24 | 东莞市泰力塑胶制品有限公司 | Injection mold capable of realizing rapid demolding |
| CN116945504A (en) * | 2023-07-19 | 2023-10-27 | 长兴优浩科技有限公司 | Motor injection mold capable of rapidly demolding |
-
2023
- 2023-10-31 CN CN202311421140.1A patent/CN117140880B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312819A (en) * | 1987-06-16 | 1988-12-21 | Isuzu Motors Ltd | Air vent apparatus of mold for molding plastic |
| DE10336954A1 (en) * | 2003-08-07 | 2005-03-17 | MöllerTech GmbH | Demolding and ejection of molded components from a plastics processing machine involves feeding liquid gas to a recess in tool half below component where fluid gas expands to gaseous state for ejection |
| JP2012240315A (en) * | 2011-05-20 | 2012-12-10 | Panasonic Corp | Injection molding die for cylindrical molded article |
| CN215969854U (en) * | 2021-09-14 | 2022-03-08 | 安徽东银科技有限公司 | Injection mold for bowl cover |
| CN114248406A (en) * | 2021-12-27 | 2022-03-29 | 董野 | Injection mold with automatic demoulding mechanism |
| CN218366270U (en) * | 2022-09-22 | 2023-01-24 | 东莞市泰力塑胶制品有限公司 | Injection mold capable of realizing rapid demolding |
| CN116945504A (en) * | 2023-07-19 | 2023-10-27 | 长兴优浩科技有限公司 | Motor injection mold capable of rapidly demolding |
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| CN117140880A (en) | 2023-12-01 |
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