CN117047983A - Injection molding machine convenient to cooling drawing of patterns - Google Patents

Injection molding machine convenient to cooling drawing of patterns Download PDF

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Publication number
CN117047983A
CN117047983A CN202311201527.6A CN202311201527A CN117047983A CN 117047983 A CN117047983 A CN 117047983A CN 202311201527 A CN202311201527 A CN 202311201527A CN 117047983 A CN117047983 A CN 117047983A
Authority
CN
China
Prior art keywords
annular
die
groove
plate
cavity
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.)
Pending
Application number
CN202311201527.6A
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Chinese (zh)
Inventor
詹永权
金秋枚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Yuesheng Rubber And Plastic Industrial Co ltd
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Shenzhen Yuesheng Rubber And Plastic Industrial Co ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by Shenzhen Yuesheng Rubber And Plastic Industrial Co ltd filed Critical Shenzhen Yuesheng Rubber And Plastic Industrial Co ltd
Priority to CN202311201527.6A priority Critical patent/CN117047983A/en
Publication of CN117047983A publication Critical patent/CN117047983A/en
Pending legal-status Critical Current

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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
    • B29C45/26—Moulds
    • B29C45/2616—Moulds having annular mould cavities
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B29C2045/7325—Mould cavity linings for covering fluid channels or provided therewith

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  • 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 application relates to the technical field of injection molding, in particular to an injection molding machine convenient for cooling and demolding; the injection device comprises a frame and an injection assembly arranged at the upper part of the frame; an upper die and a lower die are arranged between the lower part of the injection assembly and the lower part of the frame; a liquid inlet is formed in the upper die; an upper annular cavity is formed in the lower surface of the upper die; an upper annular shell is embedded in the upper annular cavity; the upper surface of the upper ring shell is fixedly connected with an upper connecting rod; the upper connecting rod passes through the upper die and is fixedly connected with the upper plate; the upper plate is positioned above the upper die; the upper connecting rod is in sliding sealing connection with the upper die; the upper surface of the upper plate is fixedly connected to the upper part of the frame through a hydraulic cylinder; according to the application, the raw materials in the cavity are cooled through the upper annular shell and the lower annular shell which are all-round and are thinner, and compared with cooling holes with smaller sections in a die in the prior art, the cooling efficiency is higher, so that the sealing ring formed by the raw materials can be quickly and conveniently demoulded.

Description

Injection molding machine convenient to cooling drawing of patterns
Technical Field
The application relates to the technical field of injection molding, in particular to an injection molding machine convenient for cooling and demolding.
Background
The seal ring is typically formed by an injection molding machine. And injecting the melted material into a mold cavity of the sealing ring by an injection assembly in the injection molding machine, forming the required sealing ring shape under the action of proper temperature and pressure, and then controlling the material in the cavity of the mold to cool and solidify, namely taking out the formed sealing ring.
The material in the mould generally goes on through forced air cooling or water-cooling dual mode, and the water-cooling is compared the forced air cooling and is gone on, and the water-cooling is generally set up the cooling hole in the inside of mould, and the coolant liquid can be along the one end entering of cooling hole to shift out from the other end of cooling hole, although the cooling hole can be close to the die cavity setting so that reach better cooling effect, but in order to guarantee intensity around the die cavity in the mould, the general of the cross-section setting of cooling hole is less, but this has also limited the cooling hole and has cooled the effect to the material in the die cavity for sealing washer shaping drawing of patterns efficiency is lower.
Disclosure of Invention
In order to make up for the defects of the prior art, the application provides an injection molding machine convenient for cooling and demolding, and the application cools raw materials in a cavity through an omnibearing upper annular shell and a lower annular shell which are thinner, compared with cooling holes with smaller sections in a mold in the prior art, the cooling efficiency of the application is higher, so that a sealing ring formed by the raw materials can be quickly and conveniently demolded.
The technical scheme adopted for solving the technical problems is as follows: the injection molding machine convenient for cooling and demolding comprises a machine frame and an injection assembly at the upper part of the machine frame; an upper die and a lower die are arranged between the lower part of the injection assembly and the lower part of the frame; a liquid inlet is formed in the upper die;
an upper annular cavity is formed in the lower surface of the upper die; an upper annular shell is embedded in the upper annular cavity; the upper surface of the upper ring shell is fixedly connected with an upper connecting rod; the upper connecting rod passes through the upper die and is fixedly connected with the upper plate; the upper plate is positioned above the upper die; the upper connecting rod is in sliding sealing connection with the upper die; the upper surface of the upper plate is fixedly connected to the upper part of the frame through a hydraulic cylinder;
the upper surface of the lower die is provided with a lower annular cavity; a lower annular shell is embedded in the lower annular cavity; the lower annular cavity corresponds to the upper annular cavity in position; the lower annular shell corresponds to the upper annular shell in position; the lower annular shell and the upper annular shell are combined to form a cavity; the injection assembly is communicated with the cavity; the liquid inlet hole is communicated with the upper part of the upper annular cavity; the cooling liquid enters the upper annular cavity to push the upper die upwards, and the product in the cavity is cooled by the upper annular shell.
Preferably, the lower surface of the lower ring shell is fixedly connected with a lower connecting rod; the lower connecting rod passes through the lower die and is fixedly connected with the lower plate; the lower plate is positioned below the lower die; the lower connecting rod is in sliding sealing connection with the lower die; the lower plate is connected with the lower die through a lower spring; the elasticity of the lower spring is larger than the gravity of the lower die; the lower plate is fixedly connected to the lower part of the frame; the cooling liquid can push the lower die downwards, and the product in the cavity is cooled through the lower annular shell.
Preferably, the lower surface of the upper die is provided with an annular groove; the annular groove is positioned at the periphery of the upper annular cavity; the annular groove is movably and hermetically connected with an annular plate; the annular plate is fixedly connected with the upper surface of the lower die; a liquid outlet hole is formed in the lower die; the liquid outlet hole is communicated with the lower part of the lower annular cavity; the cooling liquid sequentially passes through the upper annular cavity and the lower annular cavity along the liquid inlet hole and is discharged along the liquid outlet hole.
Preferably, one end of the liquid inlet hole, which is communicated with the upper annular cavity, is far away from one end of the liquid outlet hole, which is communicated with the lower annular cavity; and the cooling liquid enters along the liquid inlet hole, fills the upper annular cavity and the lower annular cavity, and is discharged along the liquid outlet hole.
Preferably, the inner side wall of the annular plate is provided with a groove; the clamping block is connected in a sliding way in the groove; the clamping block is connected with the bottom of the groove through a first spring; an inclined plane is arranged at the upper position of one end, far away from the first spring, of the clamping block; the groove wall of the annular groove is provided with a clamping groove; the clamping groove position corresponds to the groove position; one end of the clamping block, which is far away from the first spring, can be clamped into the clamping groove and is movably sealed with the clamping groove; the clamping groove is communicated with the liquid inlet hole through a first through hole; the first straight hole is connected with a straight rod in a sliding sealing manner; after the clamping blocks are clamped into the clamping grooves, the upper die and the lower die are locked.
Preferably, the grooves are uniformly distributed around the center of the annular plate; one ends of the plurality of first straight holes, which are close to the center of the annular plate, are communicated through a communication groove; the upper part and the lower part of the frame are connected with a guide rod; the guide rod sequentially passes through the upper plate, the upper die, the lower die and the lower plate from top to bottom; the guide rod is in sliding connection with the upper plate, the upper die, the lower die and the lower plate.
Preferably, the lower surface of the upper die is uniformly provided with upper movable grooves around the center of the annular groove; the upper movable groove passes through the upper annular cavity; the upper movable groove is connected with the upper movable plate in a sliding and sealing manner; the upper movable plate is connected with the bottom of the upper movable groove through a second spring; the lower surface of the upper movable plate is matched with the lower surface of the upper die and the inner wall of the upper annular cavity in an initial state;
the upper surface of the lower die is uniformly provided with lower movable grooves around the center of the annular plate; the lower movable groove passes through the lower annular cavity; the lower movable groove is connected with the lower movable plate in a sliding and sealing manner; the lower movable plate is connected with the bottom of the lower movable groove through a third spring; the upper surface of the lower movable plate is matched with the upper surface of the lower die and the inner wall of the lower annular cavity in an initial state;
the upper movable plate and the lower movable plate are staggered in the circumferential direction of the annular groove; the cooling liquid passes through the upper annular cavity and the lower annular cavity in a reciprocating way under the action of the upper movable plate and the lower movable plate.
Preferably, one end of the upper movable groove is close to the center of the annular groove, and the other end of the upper movable groove is close to the annular groove and is close to the inner side wall; one end of the lower movable groove is close to the center of the annular plate, and the other end of the lower movable groove is close to the inner side wall of the annular plate.
The beneficial effects of the application are as follows:
1. according to the application, the raw materials in the cavity are cooled through the upper annular shell and the lower annular shell which are all-round and are thinner, and compared with cooling holes with smaller sections in a die in the prior art, the cooling efficiency is higher, so that the sealing ring formed by the raw materials can be quickly and conveniently demoulded.
2. According to the application, after the upper die and the lower die are locked, in the process that raw materials enter the cavity under the action of certain pressure, the upper die and the lower die can better support the outer sides of the upper annular shell and the lower annular shell, so that the strength of the upper annular shell and the lower annular shell is further improved.
3. According to the application, the cooling liquid can repeatedly circulate and sequentially enter the upper cooling space and the lower cooling space after entering along the liquid inlet hole, and finally is discharged along the liquid outlet hole after forming a whole ring.
Drawings
The application will be further described with reference to the drawings and embodiments.
FIG. 1 is a perspective view of a mold release of the present application;
FIG. 2 is a perspective view of the mold assembly of the present application;
FIG. 3 is a view showing the position of the lower movable groove in the present application;
FIG. 4 is a view showing the position of the upper movable groove in the present application;
FIG. 5 is a position diagram of the upper and lower links of the present application;
FIG. 6 is a view showing the positions of the upper and lower movable plates in the present application;
FIG. 7 is a cross-sectional view of the present application;
fig. 8 is an enlarged view at a in fig. 7.
In the figure: the injection molding machine comprises a frame 1, an injection assembly 11, a hydraulic cylinder 12, a guide rod 13, an upper mold 2, a liquid inlet 21, an upper annular cavity 22, an annular groove 23, a clamping groove 24, a first straight hole 25, a straight rod 26, a communication groove 27, an upper movable groove 28, a lower mold 3, a lower annular cavity 31, an annular plate 33, a liquid outlet 34, a groove 35, a clamping block 36, an inclined surface 361, a first spring 37, a lower movable groove 38, an upper annular shell 4, an upper connecting rod 41, an upper plate 42, a lower annular shell 5, a cavity 51, a lower connecting rod 52, a lower plate 53, a lower spring 54, an upper movable plate 6, a second spring 61, a lower movable plate 7 and a third spring 71.
Detailed Description
The application is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the application easy to understand.
As shown in fig. 1 to 8, the present application includes the following embodiments:
example 1:
an injection molding machine convenient for cooling and demolding comprises a machine frame 1 and an injection assembly 11 at the upper part of the machine frame 1; an upper die 2 and a lower die 3 are arranged between the lower part of the injection assembly 11 and the lower part of the frame 1; a liquid inlet 21 is arranged in the upper die 2;
the lower surface of the upper die 2 is provided with an upper annular cavity 22; an upper annular shell 4 is embedded in the upper annular cavity 22; the upper surface of the upper ring shell 4 is fixedly connected with an upper connecting rod 41; the upper connecting rod 41 passes through the upper die 2 and is fixedly connected with the upper plate 42; the upper plate 42 is located above the upper die 2; the upper connecting rod 41 is in sliding sealing connection with the upper die 2; the upper surface of the upper plate 42 is fixedly connected to the upper part of the frame 1 through a hydraulic cylinder 12;
the upper surface of the lower die 3 is provided with a lower annular cavity 31; the lower annular cavity 31 is internally embedded with the lower annular shell 5; the lower annular cavity 31 corresponds to the upper annular cavity 22 in position; the lower annular shell 5 corresponds to the upper annular shell 4 in position; the lower annular shell 5 and the upper annular shell 4 are combined to form a cavity 51; the injection assembly 11 is in communication with the cavity 51; the liquid inlet hole 21 is communicated with the upper annular cavity 22 at an upper position; the cooling liquid enters the upper ring cavity 22 to push the upper die 2 upwards, and the product in the cavity 51 is cooled through the upper ring shell 4.
In this embodiment, the lower surface of the lower ring shell 5 is fixedly connected with a lower connecting rod 52; the lower connecting rod 52 passes through the lower die 3 and is fixedly connected with the lower plate 53; the lower plate 53 is positioned below the lower die 3; the lower connecting rod 52 is in sliding sealing connection with the lower die 3; the lower plate 53 is connected with the lower die 3 through a lower spring 54; the elasticity of the lower spring 54 is larger than the gravity of the lower die 3; the lower plate 53 is fixedly connected to the lower part of the frame 1; the cooling liquid can push the lower die 3 downward, and cool the product in the cavity 51 through the lower ring shell 5.
In this embodiment, the lower surface of the upper mold 2 is provided with an annular groove 23; the annular groove 23 is positioned at the periphery of the upper annular cavity 22; the annular groove 23 is movably connected with an annular plate 33 in a sealing way; the annular plate 33 is fixedly connected with the upper surface of the lower die 3; a liquid outlet hole 34 is formed in the lower die 3; the liquid outlet hole 34 is communicated with the lower annular cavity 31 at a lower position; the cooling liquid sequentially passes through the upper ring chamber 22 and the lower ring chamber 31 along the liquid inlet hole 21, and is discharged along the liquid outlet hole 34.
In this embodiment, the end of the liquid inlet 21, which is communicated with the upper annular cavity 22, is far away from the end of the liquid outlet 34, which is communicated with the lower annular cavity 31; the cooling liquid enters along the liquid inlet hole 21 and is filled into the upper annular cavity 22 and the lower annular cavity 31 and then is discharged along the liquid outlet hole 34;
when the sealing ring cooling device works, in the prior art, cooling liquid enters along one end of a cooling hole and moves out from the other end of the cooling hole, and although the cooling hole can be arranged close to a cavity 51 to achieve a better cooling effect, in order to ensure the strength around the cavity 51 in a die, the cross section of the cooling hole is generally smaller, but the cooling effect of materials in the cavity 51 of the cooling Kong Duixing is limited, so that the molding and demolding efficiency of the sealing ring is lower;
after the preparation of the sealing ring raw material is completed, the raw material is poured into the injection assembly 11 along the feeding bin above the injection assembly 11, the injection assembly 11 heats and melts the raw material, the injection assembly 11 controls the injection machine to automatically operate, the controller controls the hydraulic cylinder 12 to extend and drive the upper plate 42 to move downwards, the upper plate 42 drives the upper connecting rod 41, the upper annular shell 4 and the upper die 2 to move downwards, the annular groove 23 on the lower surface of the upper die 2 moves downwards along with the upper die 2 to be close to the annular plate 33, the upper annular shell 4 contacts with the lower annular shell 5 to form a cavity 51 in the process of moving downwards along with the upper die 2, the annular plate 33 is sealed after being inserted into the annular groove 23 in the process of moving downwards along with the upper die 2, the controller pumps the gas in the cavity 51 to enable the cavity 51 to be in a vacuum state, then the injection assembly 11 enables the melted raw material to enter the cavity 51 along the inner side of the upper annular shell 4 through the upper plate 42 and the upper connecting rod 41, the raw material is injected into the cavity 51 under certain pressure, the cavity 51 is filled with the raw material, the cavity 51 is easy to be in a shape, the upper annular shell 4 is easy to be embedded into the annular shell 4, the upper annular shell 22 is easy to be embedded into the annular shell 4, the upper annular shell 4 is not to be deformed, the upper annular shell 4 is not provided with the inner side of the upper annular shell 5, the upper annular shell 4 is not provided with the strength and the lower annular shell 5 is not deformed, the inner side of the upper annular shell 5 is provided with the upper annular shell 5, the inner side 5 is not deformed, the upper annular shell 5 is provided with the upper annular shell 5 is lower annular shell is deformed, and the inner side 5 is deformed, the lower shell is provided in the process of the process is deformed, the lower shell is provided lower and the lower shell 5 is the lower and the supporting the lower and the inner side is subjected to the supporting the inner 5; then the injection assembly 11 is closed, the water pump is started, the water pump can enable cooling liquid to enter the inner wall of the upper annular cavity 22 along the liquid inlet 21 under the condition of a certain pressure, the cooling liquid can continuously enter the upper annular cavity 22 along the liquid inlet 21 under the action of the pressure to the upper inner wall, the cooling liquid can jack the upper die 2, the upper die 2 moves upwards along the upper connecting rod 41 under the action of overcoming self gravity, a gap is formed between the upper annular cavity 22 and the upper annular shell 4 after the upper die 2 moves upwards, the cooling liquid can enter the upper surface of the lower die 3 along the gap between the outer wall of the upper annular shell 4 and the inner wall of the upper annular cavity 22, the cooling liquid can overcome the lower spring 54 to push the lower die 3 to move downwards along the lower connecting rod 52 along the axis as the liquid pressure of the cooling liquid is further improved, a gap is formed between the lower annular cavity 31 and the lower annular shell 5 after the lower die 3 moves downwards, the cooling liquid can enter between the inner wall of the lower annular cavity 31 and the outer wall of the lower annular shell 5, the cooling liquid can continuously flow between the outer wall of the upper annular shell 4 and the inner wall of the upper annular cavity 22, the outer wall of the lower annular shell 5 and the inner wall of the lower annular cavity 31, the cooling liquid can not leak from a gap between the lower surface of the upper die 2 and the upper surface of the lower die 3 due to the interception seal of the annular plate 33, a pressure relief valve is arranged in the liquid outlet 34, the cooling liquid around the cavity 51 is stronger than the pressure relief valve and flows out along the liquid outlet 34, the cooling liquid cools the raw materials in the cavity 51 through the upper annular shell 4 and the lower annular shell 5, the cooling liquid can take away the heat of the raw materials in the cavity 51 and is discharged along the liquid outlet 34, the pressure relief valve is arranged, the cooling liquid around the cavity 51 always keeps a certain pressure, the upper die 2 and the lower die 3 are mutually far away to form a gap, the flowing effect of the cooling liquid outside the cavity 51 is ensured, the cooling and solidifying effects of the raw materials are further guaranteed, the raw materials in the cavity 51 are cooled through the upper annular shell 4 and the lower annular shell 5 which are all-round and are thinner, and compared with cooling holes with smaller cross sections in a die in the prior art, the cooling efficiency is higher, so that the sealing ring formed by the raw materials can be quickly and conveniently demoulded; after the raw materials are cooled, the water pump stops working, so that a certain pressure of cooling liquid is kept between the outer wall of the upper annular shell 4 and the inner wall of the upper annular cavity 22, and a certain pressure of cooling liquid is kept between the outer wall of the lower annular shell 5 and the inner wall of the lower annular cavity 31, the cooling liquid with a certain pressure is also kept between the upper die 2 and the lower die 3, then the controller controls the hydraulic cylinder 12 to shorten and drive the upper plate 42 to move upwards, the upper connecting rod 41, the upper annular shell 4 and the upper die 2 are driven to synchronously move upwards in the upward moving process of the upper plate 42, the upper annular shell 4 is far away from the lower annular shell 5 after upward moving, and as the cooling liquid is arranged between the upper die 2 and the lower die 3, the upper die 2 and the lower die 3 can be separated better, the negative pressure is prevented from influencing the demolding efficiency, the cooling liquid exists, the upper die 2 is far away from the lower die 3 more easily, the upper annular shell 4 is far away from the lower annular shell 5 after upward moving, the cavity 51 is opened, the sealing ring after the raw materials in the cavity 51 are molded is exposed, the sealing ring is realized, and then a worker can take out the sealing ring after injection molding; then the upper die 2 moves downwards along the axial direction of the upper connecting rod 41 under the action of self gravity, the cooling liquid at the gap between the outer wall of the upper annular shell 4 and the inner wall of the upper annular cavity 22 is squeezed away, so that the upper annular shell 4 is re-embedded into the upper annular cavity 22 on the lower surface of the upper die 2, and the lower die 3 moves upwards along the axial direction of the lower connecting rod 52 under the action of the elasticity of the lower spring 54, so that the cooling liquid at the gap between the outer wall of the lower annular shell 5 and the inner wall of the lower annular cavity 31 is squeezed away, and the lower annular shell 5 is re-embedded into the lower annular cavity 31 on the upper surface of the lower die 3; in this embodiment, the end of the liquid inlet 21, which is communicated with the upper ring cavity 22, is far away from the end of the liquid outlet 34, which is communicated with the lower ring cavity 31, so that the cooling liquid can flow out after filling the upper ring cavity 22 and the lower ring cavity 31, the flowing range of the cooling liquid in the upper ring cavity 22 and the lower ring cavity 31 is enlarged, and the raw material cooling range and the cooling effect of the cooling liquid in the cavity 51 are improved.
Example 2, this example differs from example 1 in that:
the inner side wall of the annular plate 33 is provided with a groove 35; the groove 35 is connected with a clamping block 36 in a sliding way; the clamping block 36 is connected with the bottom of the groove 35 through a first spring 37; an inclined surface 361 is arranged at the upper position of one end, far away from the first spring 37, of the clamping block 36; the groove wall of the annular groove 23 is provided with a clamping groove 24; the clamping groove 24 corresponds to the groove 35 in position; one end of the clamping block 36, which is far away from the first spring 37, can be clamped into the clamping groove 24 and is movably sealed with the clamping groove 24; the clamping groove 24 is communicated with the liquid inlet hole 21 through a first straight hole 25; the first straight hole 25 is connected with a straight rod 26 in a sliding sealing way; the clamping block 36 locks the upper die 2 and the lower die 3 after being clamped into the clamping groove 24.
In this embodiment, the grooves 35 are uniformly distributed around the center of the annular plate 33; one ends of the plurality of first straight holes 25 near the center of the annular plate 33 are communicated through the communication groove 27; the upper part and the lower part of the frame 1 are connected with a guide rod 13; the guide rod 13 sequentially passes through the upper plate 42, the upper die 2, the lower die 3 and the lower plate 53 from top to bottom; the guide rod 13 is slidably connected with the upper plate 42, the upper die 2, the lower die 3 and the lower plate 53;
when in operation, the controller controls the upper plate 42, the upper connecting rod 41, the upper ring shell 4 and the upper die 2 to move downwards along the axial direction of the guide rod 13, the annular groove 23 on the lower surface of the upper die 2 moves close to the annular plate 33, the annular plate 33 is inserted into the annular groove 23 in the downward moving process of the upper die 2, the inclined surface 361 on the clamping block 36 overcomes the first spring 37 to retract into the groove 35 under the extrusion action of the notch of the annular groove 23, and after the annular plate 33 moves relatively close to the groove bottom of the annular groove 23, the annular plate 33 drives the groove 35 to correspond to the corresponding clamping groove 24 in position, so that the clamping block 36 can be clamped into the clamping groove 24 under the action of the elasticity of the first spring 37, the locking of the upper die 2 and the lower die 3 is realized, the locking strength between the upper die 2 and the lower die 3 is improved by arranging the grooves 35 into a plurality of grooves and uniformly distributed around the center of the annular plate 33, in this way, after the upper die 2 and the lower die 3 are locked, in the process that raw materials enter the cavity 51 under the action of a certain pressure, the upper die 2 and the lower die 3 can better support the outer sides of the upper annular shell 4 and the lower annular shell 5, the strength of the upper annular shell 4 and the lower annular shell 5 is further improved, when the raw materials in the cavity 51 need to be cooled, cooling liquid is introduced into the liquid inlet 21, the cooling liquid enters the first straight hole 25 along the communication groove 27 under the action of the liquid pressure of the cooling liquid, the straight bar 26 in the first straight hole 25 is pushed to move the straight bar 26 under the action of the liquid pressure to move the extrusion clamping block 36, the clamping block 36 is retracted into the groove 35 under the action of the corresponding straight bar 26 against the first spring 37, the upper die 2 and the lower die 3 are unlocked, the cooling liquid subsequently enters the upper annular cavity 22 and the lower annular cavity 31, the upper die 2 and the lower die 3 are pushed away from each other, and the raw material in the cavity 51 is cooled.
Example 3, this example differs from example 2 in that:
the lower surface of the upper die 2 is uniformly provided with an upper movable groove 28 around the center of the annular groove 23; the upper movable groove 28 passes over the upper annular cavity 22; the upper movable groove 28 is connected with the upper movable plate 6 in a sliding and sealing manner; the upper movable plate 6 is connected with the bottom of the upper movable groove 28 through a second spring 61; the lower surface of the upper movable plate 6 is matched with the lower surface of the upper die 2 and the inner wall of the upper annular cavity 22 in an initial state;
the upper surface of the lower die 3 is uniformly provided with lower movable grooves 38 around the center of the annular plate 33; the lower movable groove 38 passes over the lower annular cavity 31; the lower movable groove 38 is connected with the lower movable plate 7 in a sliding and sealing manner; the lower movable plate 7 is connected with the bottom of the lower movable groove 38 through a third spring 71; the upper surface of the lower movable plate 7 is matched with the upper surface of the lower die 3 and the inner wall of the lower annular cavity 31 in an initial state;
the upper movable plate 6 and the lower movable plate 7 are staggered in the circumferential direction of the annular groove 23; the cooling liquid reciprocates through the upper and lower annular chambers 22 and 31 by the upper and lower movable plates 6 and 7.
In this embodiment, one end of the upper movable groove 28 is near the center of the annular groove 23, and the other end is near the inner side wall of the annular groove 23; one end of the lower movable groove 38 is arranged near the center of the annular plate 33, and the other end is arranged near the inner side wall of the annular plate 33;
when the cooling device is in operation, after cooling liquid enters the upper annular cavity 22 along the liquid inlet hole 21, the upper die 2 is moved upwards along the axial direction of the upper connecting rod 41, the second spring 61 in the upper movable groove 28 pushes the upper movable plate 6 to enable the upper movable plate 6 to abut against the outer wall of the upper annular shell 4, the upper movable plate 6 separates a gap between the inner wall of the upper annular cavity 22 and the outer wall of the upper annular shell 4 into a plurality of spaces, namely an upper cooling space, the cooling liquid enters the space between the upper die 2 and the lower die 3 along the gap between the outer wall of the upper annular shell 4 and the inner wall of the upper annular cavity 22, so that the lower die 3 is pushed to move downwards, a gap is formed between the inner wall of the lower annular cavity 31 and the outer wall of the lower annular shell 5, the third spring 71 in the lower movable groove 38 pushes the lower movable plate 7 to enable the lower movable plate 7 to abut against the outer wall of the lower annular shell 5, and the gap between the inner wall of the lower annular cavity 31 and the outer wall of the lower annular shell 5 is separated into a plurality of spaces, namely the lower cooling space.
In the description of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application, and furthermore, the terms "first", "second", "third", etc. are merely used for distinguishing the description, and should not be construed as indicating or implying relative importance.
The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (8)

1. An injection molding machine convenient for cooling and demolding comprises a machine frame and an injection assembly at the upper part of the machine frame; an upper die and a lower die are arranged between the lower part of the injection assembly and the lower part of the frame; a liquid inlet is formed in the upper die; the method is characterized in that:
an upper annular cavity is formed in the lower surface of the upper die; an upper annular shell is embedded in the upper annular cavity; the upper surface of the upper ring shell is fixedly connected with an upper connecting rod; the upper connecting rod passes through the upper die and is fixedly connected with the upper plate; the upper connecting rod is in sliding sealing connection with the upper die; the upper surface of the upper plate is fixedly connected to the upper part of the frame through a hydraulic cylinder;
the upper surface of the lower die is provided with a lower annular cavity; a lower annular shell is embedded in the lower annular cavity; the lower annular shell and the upper annular shell are combined to form a cavity; the injection assembly is communicated with the cavity; the liquid inlet hole is communicated with the upper part of the upper annular cavity; the cooling liquid enters the upper annular cavity to push the upper die upwards, and the product in the cavity is cooled by the upper annular shell.
2. An injection molding machine for facilitating cooling and demolding as claimed in claim 1, wherein: the lower surface of the lower ring shell is fixedly connected with a lower connecting rod; the lower connecting rod passes through the lower die and is fixedly connected with the lower plate; the lower plate is positioned below the lower die; the lower connecting rod is in sliding sealing connection with the lower die; the lower plate is connected with the lower die through a lower spring; the lower plate is fixedly connected to the lower part of the frame; the cooling liquid can push the lower die downwards, and the product in the cavity is cooled through the lower annular shell.
3. An injection molding machine for facilitating cooling and demolding as claimed in claim 2, wherein: the lower surface of the upper die is provided with an annular groove; the annular groove is positioned at the periphery of the upper annular cavity; the annular groove is movably and hermetically connected with an annular plate; the annular plate is fixedly connected with the upper surface of the lower die; a liquid outlet hole is formed in the lower die; the liquid outlet hole is communicated with the lower part of the lower annular cavity; the cooling liquid sequentially passes through the upper annular cavity and the lower annular cavity along the liquid inlet hole and is discharged along the liquid outlet hole.
4. An injection molding machine for facilitating cooling and demolding as claimed in claim 3, wherein: one end of the liquid inlet hole, which is communicated with the upper annular cavity, is far away from one end of the liquid outlet hole, which is communicated with the lower annular cavity; and the cooling liquid enters along the liquid inlet hole, fills the upper annular cavity and the lower annular cavity, and is discharged along the liquid outlet hole.
5. An injection molding machine for facilitating cooling and demolding as claimed in claim 3, wherein: the inner side wall of the annular plate is provided with a groove; the clamping block is connected in a sliding way in the groove; the clamping block is connected with the bottom of the groove through a first spring; an inclined plane is arranged at the upper position of one end, far away from the first spring, of the clamping block; the groove wall of the annular groove is provided with a clamping groove; the clamping groove position corresponds to the groove position; one end of the clamping block, which is far away from the first spring, can be clamped into the clamping groove and is movably sealed with the clamping groove; the clamping groove is communicated with the liquid inlet hole through a first through hole; the first straight hole is connected with a straight rod in a sliding sealing manner; after the clamping blocks are clamped into the clamping grooves, the upper die and the lower die are locked.
6. An injection molding machine for facilitating cooling and demolding as claimed in claim 5, wherein: the grooves are uniformly distributed around the center of the annular plate; one ends of the plurality of first straight holes, which are close to the center of the annular plate, are communicated through a communication groove; the upper part and the lower part of the frame are connected with a guide rod; the guide rod sequentially passes through the upper plate, the upper die, the lower die and the lower plate from top to bottom; the guide rod is in sliding connection with the upper plate, the upper die, the lower die and the lower plate.
7. An injection molding machine for facilitating cooling and demolding as claimed in claim 5, wherein: the lower surface of the upper die is uniformly provided with an upper movable groove around the center of the annular groove; the upper movable groove passes through the upper annular cavity; the upper movable groove is connected with the upper movable plate in a sliding and sealing manner; the upper movable plate is connected with the bottom of the upper movable groove through a second spring; the lower surface of the upper movable plate is matched with the lower surface of the upper die and the inner wall of the upper annular cavity in an initial state;
the upper surface of the lower die is uniformly provided with lower movable grooves around the center of the annular plate; the lower movable groove passes through the lower annular cavity; the lower movable groove is connected with the lower movable plate in a sliding and sealing manner; the lower movable plate is connected with the bottom of the lower movable groove through a third spring; the upper surface of the lower movable plate is matched with the upper surface of the lower die and the inner wall of the lower annular cavity in an initial state;
the upper movable plate and the lower movable plate are staggered in the circumferential direction of the annular groove; the cooling liquid passes through the upper annular cavity and the lower annular cavity in a reciprocating way under the action of the upper movable plate and the lower movable plate.
8. An injection molding machine for facilitating cooling and demolding as claimed in claim 7, wherein: one end of the upper movable groove is close to the center of the annular groove, and the other end of the upper movable groove is close to the annular groove and is close to the inner side wall; one end of the lower movable groove is close to the center of the annular plate, and the other end of the lower movable groove is close to the inner side wall of the annular plate.
CN202311201527.6A 2023-09-18 2023-09-18 Injection molding machine convenient to cooling drawing of patterns Pending CN117047983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311201527.6A CN117047983A (en) 2023-09-18 2023-09-18 Injection molding machine convenient to cooling drawing of patterns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311201527.6A CN117047983A (en) 2023-09-18 2023-09-18 Injection molding machine convenient to cooling drawing of patterns

Publications (1)

Publication Number Publication Date
CN117047983A true CN117047983A (en) 2023-11-14

Family

ID=88664590

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311201527.6A Pending CN117047983A (en) 2023-09-18 2023-09-18 Injection molding machine convenient to cooling drawing of patterns

Country Status (1)

Country Link
CN (1) CN117047983A (en)

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