CN117382126A - Forming die for injection molding - Google Patents
Forming die for injection molding Download PDFInfo
- Publication number
- CN117382126A CN117382126A CN202311630344.6A CN202311630344A CN117382126A CN 117382126 A CN117382126 A CN 117382126A CN 202311630344 A CN202311630344 A CN 202311630344A CN 117382126 A CN117382126 A CN 117382126A
- Authority
- CN
- China
- Prior art keywords
- die holder
- die
- elastic
- injection molding
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 239000000498 cooling water Substances 0.000 claims abstract description 24
- 230000003139 buffering effect Effects 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000008236 heating water Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009423 ventilation 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- 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
- B29C45/1742—Mounting of moulds; Mould supports
-
- 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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the field of injection molding production and discloses a forming die for injection molding, which is characterized by comprising a die combination, wherein the die combination comprises a first die holder and a second die holder which are matched, an injection molding cavity is formed after the first die holder and the second die holder are matched, the second die holder comprises a movable die holder and a fixed die holder, the fixed die holder comprises a support rod seat and a support disc plate, a hollow temperature control cavity is arranged in the body of the first die holder and the movable die holder and surrounds the injection molding cavity, a water flow passage is arranged between the first die holder and the temperature control cavity, and a hot water flow passage, a cooling water flow passage and an emptying flow passage are arranged between the movable die holder and the temperature control cavity; the die assembly is also provided with a buffering die opening mechanism, the buffering die opening mechanism comprises an elastic supporting mechanism and an elastic driving mechanism, the bottom end of the movable die holder and the top end of the first die holder are elastically supported in the die assembly direction through the elastic supporting mechanism, and the elastic driving mechanism is used for driving the movable die holder and the first die holder to elastically move in the die assembly direction.
Description
Technical Field
The invention relates to the field of injection molding production, in particular to a forming die for injection molding.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, multiple colors, various shapes, large size, accurate product size, easy updating of products, and capability of forming products with complex shapes, and is suitable for the field of mass production, products with complex shapes and other molding processing. When the injection mold is in actual use, the injection mold is used for manufacturing and forming a product, hot melted plastic is injected into a forming cavity from an injection port, and a finished product is obtained after cooling and demoulding after forming.
However, the existing products are usually demoulded after being cooled in a natural cooling mode, and the products are slow in demould due to the fact that the temperature in a molding cavity is high and the cooling speed is low, so that the effect is poor;
in addition, in the actual processing process, certain difficulties exist in demolding after the injection molding part is molded, the molded injection molding part can be adhered to the inner wall of the mold, and demolding is not easy to perform. In the actual mill, the corresponding demoulding mechanism is matched with the mould, namely, the injection molding piece is directly subjected to instantaneous force to carry out displacement demoulding, under the condition that the mould is adhered to the injection molding piece, the forced demoulding mode is easy to damage the formed injection molding piece, part of injection molding piece structure is adhered to the surface of the mould, and the quality of the formed injection molding piece is unqualified.
Disclosure of Invention
The invention aims to provide a forming die for an injection molding piece, which is designed with double elastic buffering, so that the die opening force received by the injection molding piece is more gentle, and the demolding process is smoother.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a forming die for injection molding, includes the mould combination, the mould combination includes first die holder and the second die holder of matching, the bottom of first die holder and the top of second die holder all are provided with the die cavity sunken, first die holder with form the die cavity of moulding plastics after the second die holder compound die, the material injection mouth has been seted up at the top of first die holder, the material injection pipe that the bottom has the material injection valve is disposed in the material injection mouth, the second die holder includes movable die holder and fixed die holder, the perforation has been seted up at the bottom center of movable die holder, fixed die holder include bracing piece seat and fixed connection with the supporting disk board at bracing piece seat top, the bottom of bracing piece seat passes the perforation is located the movable die holder outside.
A hollow temperature control cavity is arranged in the base bodies of the first die holder and the movable die holder and surrounds the injection molding cavity, a water flow passage is arranged between the outer side of the top of the first die holder and the temperature control cavity, and a hot water flow passage, a cooling water flow passage and an emptying flow passage are arranged between the outer side of the bottom of the movable die holder and the temperature control cavity;
at least one vent hole is formed in the top of the first die holder and the bottom of the movable die holder respectively, and a vent pipe with a vent valve is arranged in the vent hole;
the die assembly is further provided with a buffering die opening mechanism, the buffering die opening mechanism comprises an elastic supporting mechanism and an elastic driving mechanism, the bottom end of the movable die holder and the top end of the first die holder are respectively provided with the elastic supporting mechanism, elastic supporting in the die assembly direction is carried out through the elastic supporting mechanism, and the elastic driving mechanism is used for driving the movable die holder and the first die holder to carry out elastic movement in the die opening direction.
As a preferred technical scheme of the invention, the buffering die sinking mechanism is further provided with a bottom base table and a top fixing plate, the bottom end of the supporting rod seat is fixedly connected with the top surface of the bottom base table, the elastic supporting mechanism comprises a plurality of bottom elastic supporting rods and a plurality of top elastic supporting rods, the two ends of the bottom elastic supporting rods are respectively and fixedly connected with the top surface of the bottom base table and the bottom surface of the movable die holder, the two ends of the top elastic supporting rods are respectively connected with the bottom surface of the top fixing plate and the top surface of the first die holder, the top elastic supporting rods and the bottom elastic supporting rods are telescopic rod bodies, and when the first die holder and the movable die holder are clamped, the top elastic supporting rods and the bottom elastic supporting rods are in an elastic shrinkage state.
As a preferable technical scheme of the invention, the top elastic supporting rod and the bottom elastic supporting rod comprise a first inner sleeve rod, a first outer sleeve rod and a supporting spring, wherein an annular protruding edge is arranged at the outer side of one end of the first inner sleeve rod, an annular clamping table matched with the annular protruding edge is arranged at the inner side of one end of the first outer sleeve rod in a sleeved mode, the supporting spring is arranged in the first inner sleeve rod and the first outer sleeve rod, two ends of the supporting spring are respectively connected with one ends, far away from the first inner sleeve rod and the first outer sleeve rod, of the first inner sleeve rod, and the top elastic supporting rod and the bottom elastic supporting rod are in a state of being stretched to the maximum length when the supporting spring is not subjected to external force.
As a preferable technical scheme of the invention, the elastic driving mechanism comprises a driving motor, a driving column, an upward moving driving seat, a downward moving driving seat and an elastic connecting mechanism, wherein a fixing part of the driving motor is fixedly arranged on the top surface of a bottom base table, a rotating part of the driving motor is fixedly connected with the bottom end of the driving column, the top end of the driving column is rotationally connected with the bottom surface of a top fixing plate, a first thread is arranged on the outer side of the driving column at a position corresponding to a first die holder, a reverse first thread is arranged on the outer side of the driving column at a position corresponding to a second die holder, rotating holes are respectively arranged in the centers of the upward moving driving seat and the downward moving driving seat, second threads matched with the first threads are arranged on the hole walls of the rotating holes, the elastic connecting mechanism is respectively connected between the upward moving driving seat and the first die holder, and the downward moving driving seat is driven to move in the opposite or reverse direction when the driving motor rotates forwards or backwards.
As a preferable technical scheme of the invention, the elastic connecting mechanism comprises a first connecting table, a second connecting table and an elastic pull rod, one side of the first connecting table is fixedly connected with the upward movement driving seat or the downward movement driving seat, one side of the second connecting table is fixedly connected with the outer side of the first die holder or the outer side of the movable die holder, the top end and the bottom end of the elastic pull rod at the bottom are respectively and fixedly connected with the bottom surface of the second connecting table and the top surface of the first connecting table, the top end and the bottom end of the elastic pull rod at the top are respectively and fixedly connected with the bottom surface of the first connecting table and the top surface of the second connecting table, the elastic pull rod is a telescopic rod body, and the elastic pull rod is in a state of shrinking to the shortest length when not stressed.
As a preferable technical scheme of the invention, the elastic pull rod comprises a second inner sleeve rod, a second outer sleeve rod and a tension spring, wherein an annular protruding edge is arranged at the outer side of one end of the second inner sleeve rod, the second outer sleeve rod is sleeved on the inner side of one end of the second inner sleeve rod, an annular clamping table matched with the annular protruding edge is arranged at the inner side of one end of the second inner sleeve rod, the tension spring is arranged in the second inner sleeve rod and the second outer sleeve rod, and two ends of the tension spring are respectively connected with one ends, far away from the second inner sleeve rod and one end, far away from the second outer sleeve rod, of the tension spring.
As a preferable technical scheme of the invention, a plurality of anti-corrosion metal reinforced support piles are arranged between the cavity walls of the temperature control cavity.
As a preferable technical scheme of the invention, the water flow passage is matched and connected with a water receiving pipe, the bottom of the hot water flow passage is matched and connected with a hot water pipeline with a water inlet valve, the bottom of the cooling water flow passage is matched and connected with a cooling water pipeline with a water inlet valve, and the bottom of the water draining flow passage is matched and connected with a water draining pipe with a water draining valve.
As a preferable technical scheme of the invention, the outer side of the water flow passage is connected with a three-way pipe, the other two ends of the three-way pipe are respectively connected with water receiving pipes in a matching way, and a valve is arranged at the position of the three-way pipe, which is connected with the water receiving pipes.
As a preferable technical scheme of the invention, the bottom edge of the first die holder and the thickness surface of the bottom edge of the movable die holder are respectively provided with corrugated grooves matched and matched with each other, and when the first die holder and the second die holder are matched, the corrugated grooves of the first die holder and the corrugated grooves of the movable die holder are completely sealed and adhered.
In summary, the invention has the following beneficial effects: through the heating and cooling design of the temperature control cavity, the injection molding cavity can be heated before injection molding, and the temperature difference between the injection molding cavity and the feed liquid is reduced, so that the cooling uniformity degree of injection molding pieces is improved, the quality of the injection molding pieces is improved, and the possibility of damage to the mold caused by large temperature difference is reduced;
through the elasticity buffering design of buffering mold opening mechanism for the injection molding receives the power that increases gradually at whole mold opening in-process, and not the moment effort of rigidity mold opening, especially designed dual elasticity buffering, the atmospheric pressure balancing action of cooperation air vent, thereby let the injection molding receive the mold opening power more mild, make the drawing of patterns process more smooth, the damage to injection molding itself is littleer, has improved holistic injection molding yields.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the first and second die holders of the present invention;
FIG. 3 is an external view of the present invention;
fig. 4 is an enlarged view of the area a in fig. 1.
In the figure: 1. a first die holder; 2. an injection molding cavity; 3. a material injection pipe; 4. moving the die holder; 5. a support rod seat; 6. a support tray plate; 7. a water flow passage; 8. a hot water flow passage; 9. heating a water flow passage; 10. evacuating the flow channel; 11. a vent pipe; 12. a bottom base table; 13. a top fixing plate; 14. a bottom elastic support rod; 15. a top elastic support bar; 16. a first inner loop bar; 17. a first outer sleeve rod; 18. an annular protruding edge; 19. an annular clamping table; 20. a support spring; 21. a driving motor; 22. a drive column; 23. the driving seat moves upwards; 24. a downward movement driving seat; 25. a first connection station; 26. a second connection station; 27. an elastic pull rod; 28. a second inner loop bar; 29. a second jacket lever; 30. a tension spring; 31. metal reinforced support piles; 32. a corrugation groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-4, the invention provides a forming die for injection molding, which comprises a die combination, as shown in fig. 2, wherein the die combination comprises a first die holder 1 and a second die holder which are matched, the bottom of the first die holder 1 and the top of the second die holder are both provided with cavity pits, an injection molding cavity 2 is formed after the first die holder 1 and the second die holder are clamped, a material injection port is formed in the top of the first die holder 1, and a material injection pipe 3 with a material injection valve at the bottom is arranged in the material injection port; the material injection port is used for injecting material liquid into the injection molding cavity 2, and when the material liquid is cooled, the molded injection molding piece can be obtained.
As shown in fig. 1, the second die holder comprises a movable die holder 4 and a fixed die holder, a through hole is formed in the center of the bottom of the movable die holder 4, the fixed die holder comprises a support rod seat 5 and a support disc plate 6 fixedly connected with the top of the support rod seat 5, and the bottom end of the support rod seat 5 passes through the through hole and is arranged outside the movable die holder 4; in the actual injection molding process, the fixed die holder is fixed, when the die is closed, the bottom surface of the supporting disc plate 6 is attached to the top surface of the movable die holder 4, when the die is opened, the fixed die holder is fixed, and the movable die holder 4 moves downwards to be separated from the supporting disc plate 6.
The first die holder 1 and the moving die holder 4 are internally provided with hollow temperature control cavities around the injection molding cavity 2, and a plurality of anti-corrosion metal reinforcing support piles 31 are arranged between the cavity walls of the temperature control cavities, and because the temperature control cavities surround the whole injection molding cavity 2, deformation easily occurs in the processes of die opening and die closing and the possibility of temperature deformation is increased if the temperature control cavities are arranged in a full cavity mode, the strength of the whole die combination can be enhanced, deformation in the processes of die opening and die closing can be avoided, the real volume of the temperature control cavities can be reduced, and therefore the whole temperature control cavities can be conveniently and rapidly filled with heating water and cooling water.
A water flow passage 7 is formed between the outer side of the top of the first die holder 1 and the temperature control cavity, and a hot water flow passage 8, a cooling water flow passage and an emptying flow passage 10 are formed between the outer side of the bottom of the movable die holder 4 and the temperature control cavity;
the temperature control cavities of the first die holder 1 and the movable die holder 4 are communicated, so that heating water or cooling water can be introduced into the temperature control cavities through the hot water flow channel 8 and the cooling water flow channel during die assembly and injection molding, so that the whole temperature control cavities are filled with the heating water or the cooling water, redundant water is discharged through the water flow channel 7 after the water inside the temperature control cavities are filled with the water, and the water is continuously introduced continuously, so that the temperature of the injection molding cavity 2 can be changed rapidly under the influence of the temperature control cavities, the actual injection molding processing is facilitated, the water is introduced from bottom to top, and the water in the temperature control cavities can be ensured to be in a filling state. Before the die opening, all water bodies in the temperature control cavity are discharged through the emptying flow channel 10, and then the die opening is carried out. And the top of whole accuse temperature chamber is protruding arc, and the bottom is protruding arc down to can make things convenient for the filling of rivers to spill over and open the mould and discharge when making things convenient for in-service use.
Specifically, connect the water receiving pipe in the water flow channel 7 adaptation, the outside of water flow channel 7 is connected with the three-way pipe, and the other both ends of three-way pipe are respectively the adaptation and connect the water receiving pipe, and the position configuration of three-way pipe connection water receiving pipe has the valve, and the water receiving pipe is used for accepting the water that overflows and to its drainage discharge, and three-way pipe and valve are used for heating water and cooling water's drainage respectively, and when discharging cooling water, the valve of the water receiving pipe of drainage heating water closes, and when discharging heating water, the valve of the water receiving pipe of drainage cooling water closes.
It should be noted that, in actual use, the water discharged from the water flow channel 7 is recovered, so as to reduce the energy consumption of actually generated cooling water and heating water, and the valve of the three-way pipe is electrically controlled, and the time for selectively opening the valve is also precisely designed, because when the water is replaced by heating water and cooling water, a part of water is mixed, so that the part of mixed water is decided to be led into the corresponding water receiving pipe according to the energy consumption comparison of the actual heating water and cooling water, for example, if the energy consumption of the heating water is lower, the part of mixed water is led into the recovered water receiving pipe such as heating water, and when the heating water is required to be obtained again, the required energy consumption is lower, and the energy saving requirement of an actual factory is met.
The bottom of the hot water flow channel 8 is matched and connected with a hot water pipeline with a water inlet valve, the bottom of the cooling water flow channel is matched and connected with a cooling water pipeline with a water inlet valve, so that external equipment can be conveniently and selectively introduced with heating water or cooling water into the temperature control cavity, and the water inlet valves of the hot water pipeline and the cooling water pipeline can not be opened at the same time, but can be opened according to actual heating or cooling requirements.
The bottom of the drainage runner is connected with a drainage pipe with a drainage valve in a matching way and is used for selectively draining the water body of the temperature control cavity before the die opening.
Regarding the working process of whole accuse temperature chamber, after the compound die, and before moulding plastics, the whole accuse temperature chamber of continuous income heating water filling earlier for mould plastics die cavity 2 can heat up, carries out the income of feed liquid again at this moment, can reduce the inhomogeneous because of mould plastics die cavity 2 temperature and feed liquid temperature difference excessively, the injection molding quality that leads to does not pass, the damage that mould itself expend with heat and contract with cold range is too big causes, heats earlier through heating water, alright make both difference in temperature reduce, improves final yields, reduces the damage of mould itself simultaneously. And the temperature of the heating water can be further increased due to the high temperature of the feed liquid, so that the heating cost of the heating water can be reduced, the heat recovery of the feed liquid can be increased, and the production energy consumption is reduced as a whole.
At least one vent is respectively formed in the top of the first die holder 1 and the bottom of the movable die holder 4, a vent pipe 11 with a vent valve is arranged in the vent pipe, the vent pipe is used for balancing the internal air pressure of the injection molding cavity 2, air is discharged when feed liquid is injected, air is introduced when the die is opened, the difficulty in die release and die release caused by air pressure is avoided, and the vent valve is arranged, so that the feed liquid can be prevented from entering the vent pipe 11.
The die assembly is further provided with a buffer die opening mechanism, as shown in fig. 1 and 3, the buffer die opening mechanism comprises an elastic supporting mechanism and an elastic driving mechanism, the bottom end of the movable die holder 4 and the top end of the first die holder 1 are respectively provided with the elastic supporting mechanism, elastic supporting in the die assembly direction is carried out through the elastic supporting mechanism, and the elastic driving mechanism is used for driving the movable die holder 4 and the first die holder 1 to carry out elastic movement in the die opening direction.
Specifically, the buffering die sinking mechanism is provided with bottom base platform 12 and top fixed plate 13 still, wherein bottom base platform 12 and top fixed plate 13 need be fixed respectively, the bottom of bracing piece seat 5 and the top surface fixed connection of bottom base platform 12, elastic support mechanism includes a plurality of bottom elastic support rods 14 and a plurality of top elastic support rods 15, the bottom surface of bottom base platform 12 top surface and the bottom surface of movable die holder 4 of fixed connection respectively in both ends of bottom elastic support rods 14, the bottom surface of top fixed plate 13 and the top surface of first die holder 1 are connected respectively at the both ends of top elastic support rods 15, top elastic support rods 15 and bottom elastic support rods 14 are the telescopic body of rod, when first die holder 1 and movable die holder 4 compound die, top elastic support rods 15 and bottom elastic support rods 14 all are in the state of elasticity shrink.
The top elastic support rod 15 and the bottom elastic support rod 14 comprise a first inner loop rod 16, a first outer loop rod 17 and a support spring 20, an annular protruding edge 18 is arranged at the outer side of one end of the first inner loop rod 16, the first outer loop rod 17 is sleeved on the inner side of one end of the first inner loop rod 16, an annular clamping table 19 matched with the annular protruding edge 18 is arranged at the inner side of one end of the first inner loop rod, the support spring 20 is arranged in the first inner loop rod 16 and the first outer loop rod 17, two ends of the support spring 20 are respectively connected with one ends, far away from the first inner loop rod 16 and the first outer loop rod 17, of the top elastic support rod 15 and the bottom elastic support rod 14 are in a state of extending to the maximum length when the support spring is not subjected to external force.
The elastic driving mechanism comprises a driving motor 21, a driving column 22, an upward moving driving seat 23, a downward moving driving seat 24 and an elastic connecting mechanism, wherein a fixing part of the driving motor 21 is fixedly arranged on the top surface of the bottom base table 12, a rotating part of the driving motor 21 is fixedly connected with the bottom end of the driving column 22, the top end of the driving column 22 is rotationally connected with the bottom surface of the top fixing plate 13, a first thread is arranged on the outer side of the driving column 22 at a position corresponding to the first die holder 1, a reverse first thread is arranged on the outer side of the driving column 22 at a position corresponding to the second die holder, rotating holes are respectively arranged at the centers of the upward moving driving seat 23 and the downward moving driving seat 24, second threads matched with the first threads are respectively arranged on the hole walls of the rotating holes, the elastic connecting mechanism is respectively connected between the upward moving driving seat 23 and the first die holder 1, and between the downward moving driving seat 24 and the movable die holder 4, and the driving motor 21 is driven to move in the opposite directions or reverse directions when the driving motor 21 rotates forwards or reversely.
The elastic connecting mechanism comprises a first connecting table 25, a second connecting table 26 and an elastic pull rod 27, one side of the first connecting table 25 is fixedly connected with the upward movement driving seat 23 or the downward movement driving seat 24, one side of the second connecting table 26 is fixedly connected with the outer side of the first die holder 1 or the outer side of the movable die holder 4, the top end and the bottom end of the elastic pull rod 27 at the bottom are respectively fixedly connected with the bottom surface of the second connecting table 26 and the top surface of the first connecting table 25, the top end and the bottom end of the elastic pull rod 27 at the top are respectively fixedly connected with the bottom surface of the first connecting table 25 and the top surface of the second connecting table 26, the elastic pull rod 27 is a telescopic rod body, and the elastic pull rod 27 is in a state of shrinking to the shortest length when not stressed.
As shown in fig. 1 and 4, the elastic pull rod 27 includes a second inner sleeve rod 28, a second outer sleeve rod 29 and a tension spring 30, wherein an annular protruding edge 18 is arranged at the outer side of one end of the second inner sleeve rod 28, the second outer sleeve rod 29 is sleeved on the inner side of one end of the second inner sleeve rod 28, an annular clamping table 19 matched with the annular protruding edge 18 is arranged at the inner side of one end of the second inner sleeve rod 28, the tension spring 30 is arranged in the second inner sleeve rod 28 and the second outer sleeve rod 29, and two ends of the tension spring 30 are respectively connected with one ends, far away from the second inner sleeve rod 28 and the second outer sleeve rod 29, of the second inner sleeve rod 28.
The buffering die opening mechanism has the following functions: regarding the elastic supporting mechanism, in the mold closing state, the top elastic supporting rod 15 and the bottom elastic supporting rod 14 are in an extended state, the supporting springs 20 inside thereof are in a compressed state, and the supporting springs 20 are always in a compressed state regardless of the mold opening or mold closing state; in the open state, the top elastic support bar 15 and the bottom elastic support bar 14 are shortened, and the support springs 20 are compressed more, so that the top elastic support bar 15 and the bottom elastic support bar 14 give thrust to the first die holder 1 and the movable die holder 4 in the die closing direction regardless of the state;
regarding the elastic driving mechanism, the upward-moving driving seat 23 and the downward-moving driving seat 24 are actually sleeved on the driving post 22, when the mold is closed, the driving motor 21 rotates forward, the upward-moving driving seat 23 moves downward under the rotation driving action of the driving post 22, the downward-moving driving seat 24 moves upward under the rotation driving action of the driving post 22, at this time, the elastic pull rods 27 are all in a contracted state, and the tension springs 30 are in a stretched state. When the die is opened, the driving motor 21 is reversed, the upward-moving driving seat 23 is moved upward under the rotation driving action of the driving column 22, the downward-moving driving seat 24 is moved downward under the rotation driving action of the driving column 22, the elastic pull rod 27 is in an extended state, and the tension spring 30 is still in a stretched state, that is, the tension spring 30 is in a stretched state all the time in the whole die, and a relatively-moving tension force is always applied to the first connecting table 25 and the second connecting table 26 connected with the elastic pull rod 27.
As is apparent from the above description and the characteristics of the spring, when the mold closing state is changed into the mold opening state, the driving motor 21 is reversed, the upward movement driving seat 23 is moved upward, and the downward movement driving seat 24 is moved downward, in this process, the top elastic supporting rod 15 and the bottom elastic supporting rod 14 are all gradually shortened, the supporting spring 20 is further compressed, the back compression force of the supporting spring 20 is gradually increased, the elastic pull rod 27 is gradually increased in side length, and the tension spring 30 is further stretched, the back tension force of the tension spring 30 is gradually increased, so that when the first mold base 1 is lifted, the moving mold base 4 is lowered, and for the injection molding piece in the injection molding cavity 2, the progressive force is applied, so that the mold opening process has better demolding effect, the damage to the injection molding piece caused by the direct mold opening force is avoided, and the yield of the injection molding piece is greatly improved.
It should be noted that the shortest extension state of the top elastic support rod 15 and the bottom elastic support rod 14 in the present invention does not exceed the elastic compression limit of the support spring 20, and the longest extension state of the elastic pull rod 27 does not exceed the elastic extension limit of the tension spring 30.
As an embodiment of the invention, the bottom edge of the first die holder 1 and the bottom edge thickness surface of the movable die holder 4 are respectively provided with the ripple groove 32 matched and matched with each other, when the first die holder 1 and the second die holder are matched, the ripple groove 32 of the first die holder 1 and the ripple groove 32 of the movable die holder 4 are completely sealed and attached, and the ripple groove 32 can enhance the sealing degree, so that the occurrence of burrs of injection molding parts is reduced.
The working principle and the using process of the forming die for the injection molding part are as follows: after the injection molding piece is taken out for the last time, the driving motor 21 is controlled to rotate positively, the upward movement driving seat 23 moves downwards, the downward movement driving seat 24 moves upwards, meanwhile, the top elastic supporting rod 15 and the bottom elastic supporting rod 14 are gradually elongated, the elastic pull rod 27 is gradually shortened, the first mold base 1 is driven to move downwards and the movable mold base 4 is driven to move upwards, after the mold closing is finished, heating water is introduced into the temperature control cavity through the hot water flow channel 8, the injection molding cavity 2 is heated, after the temperature rising is finished, injection molding is carried out until the injection molding is finished, the introduction of heating water is stopped, cooling water is introduced into the temperature control cavity again until the injection molding piece is cooled and molded, or the preset injection molding cooling time is reached, the introduction of cooling water is stopped, meanwhile, the water in the temperature control cavity is discharged through the emptying pipeline, at the moment, the injection molding piece is obtained, the ventilation valve is controlled to be opened, the driving motor 21 is controlled to rotate reversely, the upward movement driving seat 23 moves upwards, the downward movement driving seat 24 moves downwards, meanwhile, the top elastic supporting rod 15 and the bottom elastic supporting rod 14 are gradually shortened, the elastic pull rod 27 is gradually elongated, the first mold base 1 moves upwards and the movable mold base 4, the temperature is increased, the injection molding piece is driven to move downwards, the spring back, the supporting rod 20, the spring supporting plate is gradually moves, the mold plate, and the compression plate is gradually moves, the mold plate, and the injection molding piece is only gradually, and the reverse pressure of the injection molding piece is gradually and the contact plate is gradually increased, and the supporting the reverse force of the injection molding piece is only when the supporting plate is gradually, and the contact area is gradually and only has been increased, and the contact force of the drawing force of the injection molding plate is gradually and the die, and the contact surface of the injection molding plate is gradually and only is gradually and the drawing die when the contact is gradually and the lower.
The invention has the advantages that: through the heating and cooling design of the temperature control cavity, the injection molding cavity 2 can be heated before injection molding, and the temperature difference between the injection molding cavity 2 and feed liquid is reduced, so that the cooling uniformity degree of injection molding pieces is improved, the quality of the injection molding pieces is improved, and the possibility of damage to the mold itself caused by large temperature difference is reduced;
through the elasticity buffering design of buffering mold opening mechanism for the injection molding receives the power that increases gradually at whole mold opening in-process, and not the moment effort of rigidity mold opening, especially designed dual elasticity buffering, the atmospheric pressure balancing action of cooperation air vent, thereby let the injection molding receive the mold opening power more mild, make the drawing of patterns process more smooth, the damage to injection molding itself is littleer, has improved holistic injection molding yields.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The utility model provides a forming die for injection molding, includes the mould combination, the mould combination is including first die holder (1) and the second die holder of matching, the bottom of first die holder (1) and the top of second die holder all are provided with the die cavity and sunken, first die holder (1) with form after the second die holder compound die and mould plastics die cavity (2), the material injection mouth has been seted up at the top of first die holder (1), the material injection mouth is interior to be configured with the material injection pipe (3) that the bottom has the material injection valve, characterized by:
the second die holder comprises a movable die holder (4) and a fixed die holder, a through hole is formed in the center of the bottom of the movable die holder (4), the fixed die holder comprises a support rod seat (5) and a support disc plate (6) fixedly connected with the top of the support rod seat (5), and the bottom end of the support rod seat (5) penetrates through the through hole and is arranged outside the movable die holder (4);
a hollow temperature control cavity is formed in the base body of the first die holder (1) and the movable die holder (4) around the injection molding cavity (2), a water flow passage (7) is formed between the outer side of the top of the first die holder (1) and the temperature control cavity, and a hot water flow passage (8), a cooling water flow passage and an emptying flow passage (10) are formed between the outer side of the bottom of the movable die holder (4) and the temperature control cavity;
at least one vent hole is formed in the top of the first die holder (1) and the bottom of the movable die holder (4), and a vent pipe (11) with a vent valve is arranged in the vent hole;
the die assembly is further provided with a buffering die opening mechanism, the buffering die opening mechanism comprises an elastic supporting mechanism and an elastic driving mechanism, the bottom end of the movable die holder (4) and the top end of the first die holder (1) are respectively provided with the elastic supporting mechanism, elastic supporting in the die assembly direction is carried out through the elastic supporting mechanism, and the elastic driving mechanism is used for driving the movable die holder (4) and the first die holder (1) to carry out elastic movement in the die assembly direction.
2. A molding die for injection molding according to claim 1, characterized in that: the buffering die sinking mechanism is further provided with a bottom base table (12) and a top fixing plate (13), the bottom of the supporting rod seat (5) is fixedly connected with the top surface of the bottom base table (12), the elastic supporting mechanism comprises a plurality of bottom elastic supporting rods (14) and a plurality of top elastic supporting rods (15), the two ends of the bottom elastic supporting rods (14) are respectively fixedly connected with the top surface of the bottom base table (12) and the bottom surface of the movable die holder (4), the two ends of the top elastic supporting rods (15) are respectively connected with the bottom surface of the top fixing plate (13) and the top surface of the first die holder (1), the top elastic supporting rods (15) and the bottom elastic supporting rods (14) are telescopic rod bodies, and when the first die holder (1) and the movable die holder (4) are clamped, the top elastic supporting rods (15) and the bottom elastic supporting rods (14) are in an elastically contracted state.
3. A molding die for injection molding according to claim 2, characterized in that: the top elastic support rod (15) with bottom elastic support rod (14) all include first interior loop bar (16), first outer loop bar (17) and supporting spring (20), the one end outside of first interior loop bar (16) sets up annular protruding edge (18), first outer loop bar (17) cup joint in the one end inboard of first interior loop bar (16) be provided with annular protruding edge (18) matched annular clamping table (19), supporting spring (20) are located first interior loop bar (16) with the inside of first outer loop bar (17), the both ends of supporting spring (20) are connected respectively first interior loop bar (16) with the one end that first outer loop bar (17) kept away from relatively, top elastic support rod (15) with bottom elastic support rod (14) are in the state of elongating to maximum length when not receiving external force.
4. A molding die for injection molding according to claim 3, characterized in that: the elastic driving mechanism comprises a driving motor (21), a driving column (22), an upward-moving driving seat (23), a downward-moving driving seat (24) and an elastic connecting mechanism, wherein the fixing part of the driving motor (21) is fixedly arranged on the top surface of a bottom base table (12), the rotating part of the driving motor (21) is fixedly connected with the bottom end of the driving column (22), the top end of the driving column (22) is rotationally connected with the bottom surface of a top fixing plate (13), a first thread is arranged on the outer side of the driving column (22) at a position corresponding to a first die holder (1), a reverse first thread is arranged on the outer side of the driving column (22) at a position corresponding to a second die holder, rotating holes are respectively formed in the centers of the upward-moving driving seat (23) and the downward-moving driving seat (24), second threads matched with the first threads are arranged on the wall of the rotating holes, the upward-moving driving seat (23) is rotationally connected with the bottom surface of the top fixing plate (13), the driving seat (24) is in the opposite direction or the driving seat (24) is driven by the reverse direction of the driving mechanism.
5. A molding die for injection molding according to claim 4, wherein: the elastic connecting mechanism comprises a first connecting table (25), a second connecting table (26) and an elastic pull rod (27), one side of the first connecting table (25) is fixedly connected with the upward-moving driving seat (23) or the downward-moving driving seat (24), one side of the second connecting table (26) is fixedly connected with the outer side of the first die holder (1) or the outer side of the movable die holder (4), the top end and the bottom end of the elastic pull rod (27) at the bottom are respectively fixedly connected with the bottom surface of the second connecting table (26) and the top surface of the first connecting table (25), the top end and the bottom end of the elastic pull rod (27) at the top are respectively fixedly connected with the bottom surface of the first connecting table (25) and the top surface of the second connecting table (26), the elastic pull rod (27) is a telescopic rod body, and the elastic pull rod (27) is in a state of shrinking to the shortest length when not stressed.
6. A molding die for injection molding according to claim 5, wherein: the elastic pull rod (27) comprises a second inner sleeve rod (28), a second outer sleeve rod (29) and a tension spring (30), wherein an annular protruding edge (18) is arranged at the outer side of one end of the second inner sleeve rod (28), the second outer sleeve rod (29) is sleeved on the inner side of one end of the second inner sleeve rod (28) and is provided with an annular clamping table (19) matched with the annular protruding edge (18), the tension spring (30) is arranged inside the second inner sleeve rod (28) and the second outer sleeve rod (29), and two ends of the tension spring (30) are respectively connected with one ends, far away from the second inner sleeve rod (28) and the second outer sleeve rod (29), of the second inner sleeve rod.
7. The molding die for injection molding according to claim 6, wherein: a plurality of anti-corrosion metal reinforced supporting piles (31) are arranged between the cavity walls of the temperature control cavity.
8. A molding die for injection molding according to claim 7, wherein: the water receiving pipe is matched and connected with the water passing flow passage (7), the hot water pipeline with the water inlet valve is matched and connected with the bottom of the hot water flow passage (8), the cooling water pipeline with the water inlet valve is matched and connected with the bottom of the cooling water flow passage, and the drain pipe with the drain valve is matched and connected with the bottom of the drain flow passage.
9. A molding die for injection molding according to claim 8, wherein: the outside of water flow channel (7) is connected with the three-way pipe, connect the water receiving pipe respectively in the other both ends of three-way pipe, the three-way pipe is connected the position of water receiving pipe disposes the valve.
10. A molding die for injection molding according to claim 9, wherein: the bottom edge of the first die holder (1) and the thickness surface of the bottom edge of the movable die holder (4) are respectively provided with corrugated grooves (32) matched and matched with each other, and when the first die holder (1) and the second die holder are assembled, the corrugated grooves (32) of the first die holder (1) and the corrugated grooves (32) of the movable die holder (4) are completely sealed and attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311630344.6A CN117382126B (en) | 2023-12-01 | 2023-12-01 | Forming die for injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311630344.6A CN117382126B (en) | 2023-12-01 | 2023-12-01 | Forming die for injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117382126A true CN117382126A (en) | 2024-01-12 |
| CN117382126B CN117382126B (en) | 2024-03-22 |
Family
ID=89437626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311630344.6A Active CN117382126B (en) | 2023-12-01 | 2023-12-01 | Forming die for injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117382126B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110316197A1 (en) * | 2010-06-25 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Injection molding system and method |
| US20170095954A1 (en) * | 2015-10-02 | 2017-04-06 | Jp Grosfilley | Injection mold and associated injection method |
| KR20170064903A (en) * | 2015-12-02 | 2017-06-12 | 엘지전자 주식회사 | Injection mold |
| CN107627554A (en) * | 2017-11-17 | 2018-01-26 | 汪永辉 | A kind of injection mold with Compulsory reduction mechanism |
| CN212979077U (en) * | 2020-08-24 | 2021-04-16 | 天津基准精密模具有限公司 | Quick injection mold of plastic goods |
| CN214820652U (en) * | 2021-06-22 | 2021-11-23 | 宜春市天祥塑胶五金有限公司 | Plastic shell injection mold of electronic device |
| CN115401863A (en) * | 2022-07-31 | 2022-11-29 | 刘道文 | Environment-friendly energy-saving injection mold |
| CN219947162U (en) * | 2023-04-04 | 2023-11-03 | 台州市路桥区腾晟塑模有限公司 | Water-cooling injection mold |
-
2023
- 2023-12-01 CN CN202311630344.6A patent/CN117382126B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110316197A1 (en) * | 2010-06-25 | 2011-12-29 | Hon Hai Precision Industry Co., Ltd. | Injection molding system and method |
| US20170095954A1 (en) * | 2015-10-02 | 2017-04-06 | Jp Grosfilley | Injection mold and associated injection method |
| KR20170064903A (en) * | 2015-12-02 | 2017-06-12 | 엘지전자 주식회사 | Injection mold |
| CN107627554A (en) * | 2017-11-17 | 2018-01-26 | 汪永辉 | A kind of injection mold with Compulsory reduction mechanism |
| CN212979077U (en) * | 2020-08-24 | 2021-04-16 | 天津基准精密模具有限公司 | Quick injection mold of plastic goods |
| CN214820652U (en) * | 2021-06-22 | 2021-11-23 | 宜春市天祥塑胶五金有限公司 | Plastic shell injection mold of electronic device |
| CN115401863A (en) * | 2022-07-31 | 2022-11-29 | 刘道文 | Environment-friendly energy-saving injection mold |
| CN219947162U (en) * | 2023-04-04 | 2023-11-03 | 台州市路桥区腾晟塑模有限公司 | Water-cooling injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117382126B (en) | 2024-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109605682B (en) | Injection mould | |
| CN112428518A (en) | Injection mold with deformed mold core | |
| CN112060474A (en) | Working method of automatic demoulding type injection mould with replaceable mould | |
| CN112060507A (en) | Quick injection moulding device of dysmorphism plastics fender convenient to drawing of patterns | |
| CN115027006A (en) | Injection mold exhaust system and injection mold | |
| CN117382126B (en) | Forming die for injection molding | |
| CN114474596A (en) | But injection mold of fast demoulding | |
| CN112339249B (en) | Comprehensive water barrel extrusion blow molding equipment | |
| CN212666615U (en) | Quick injection moulding device of dysmorphism plastics fender convenient to drawing of patterns | |
| CN218227669U (en) | Automotive interior apron injection mold | |
| CN116604790A (en) | Demoulding device for injection molding of automotive interior parts | |
| CN210389976U (en) | Injection mold with air bag | |
| CN212498622U (en) | Composite compression mould | |
| CN220242277U (en) | Mould for forming precise plastic gear | |
| CN219820552U (en) | Automobile rubber bushing forming equipment | |
| CN220129412U (en) | Auto-parts demoulding mechanism that moulds plastics | |
| CN212888802U (en) | Hand wheel die | |
| CN220923148U (en) | Injection mold of high-efficient production | |
| CN211941873U (en) | Injection mold for heat-insulating shell of water heater | |
| CN114619620B (en) | Production device and production process of aluminum core wheel | |
| CN216001408U (en) | Plastic uptake machine mould convenient to drawing of patterns | |
| CN217752630U (en) | Quick cooling system of injection mold | |
| CN218505091U (en) | Improve mould that product glued mould | |
| CN218928498U (en) | Injection mold for automobile air quantity knob | |
| CN216544517U (en) | High strength medical plastic bag injection mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |