CN115284528A - Injection molding system and method for producing ultra-thick injection molding product at low cost - Google Patents

Injection molding system and method for producing ultra-thick injection molding product at low cost Download PDF

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Publication number
CN115284528A
CN115284528A CN202210866916.XA CN202210866916A CN115284528A CN 115284528 A CN115284528 A CN 115284528A CN 202210866916 A CN202210866916 A CN 202210866916A CN 115284528 A CN115284528 A CN 115284528A
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China
Prior art keywords
mold
injection molding
opening
mold structure
self
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CN202210866916.XA
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Chinese (zh)
Inventor
查鸿达
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Shenzhen Hongwei Photoelectric Technology Co ltd
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Shenzhen Hongwei Photoelectric Technology Co ltd
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Priority to CN202210866916.XA priority Critical patent/CN115284528A/en
Publication of CN115284528A publication Critical patent/CN115284528A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an injection molding system and method for producing super-thick injection molding products at low cost, wherein the injection molding system comprises a plurality of sets of self-locking mold structures, a mold opening and closing mechanism for opening or closing the mold structures, and an injection molding mechanism for injecting molten plastic into a mold cavity of the mold structures, the mold structures are moved into the injection molding mechanism for injection molding and then are moved out for cooling, and the cooled mold mechanisms are opened through the mold opening and closing mechanism and plastic products are taken out, so that the residence time of the mold structures in the injection molding mechanism is reduced. Utilize the cooperation of mechanism and the mould mechanism that opens and shuts of moulding plastics to and the mould structure that has self-locking function, the dwell time of mould structure in the mechanism of moulding plastics is shortened by a wide margin, and at the in-process that plastics cooling solidifies, the mechanism of moulding plastics can continuously be moulded plastics for other mould structures, and single injection moulding mechanism can move many sets of mould structures in process of production, the injection moulding cost that significantly reduces.

Description

Injection molding system and method for producing ultra-thick injection molding product at low cost
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection molding system and method for producing an ultra-thick injection molding product at low cost.
Background
The plastic product is formed by injecting molten plastic into a mold cavity of a mold by an injection molding machine and cooling and solidifying the molten plastic. The cooling time of plastic products is usually determined by the thickness of the plastic products, such as super-thick plastic products like optical lenses, the thickness of the plastic products is often more than 30 mm, and the residence time of the mould in the injection moulding machine during the whole injection moulding production process is often more than tens of minutes.
Because the cost calculation of the plastic product depends on the length of the stay time of the mold in the injection molding machine after the injection molding process is completed to a great extent, when the super-thick plastic product is produced, the mold needs to stay in the injection molding machine for a long time after the injection molding process is completed, and the next injection molding process can be carried out after the molten plastic in the mold is cooled and solidified. In the process, the injection molding machine only plays a mechanical locking role, other functions are in an idle state, the processing expense of the injection molding machine is calculated according to the stay time of the mold in the injection molding machine, the long stay time in the injection molding machine can cause the processing expense of the injection molding machine to be very expensive, the production cost of plastic products is greatly improved, and the burden of enterprises is increased.
Disclosure of Invention
The present invention is directed to an injection molding system and method for producing an ultra-thick injection molded product at low cost, which overcomes the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the injection molding system comprises a plurality of sets of self-locking mold structures, a mold opening and closing mechanism for opening or closing the mold structures, and an injection molding mechanism for injecting molten plastic into a mold cavity of the mold structures, wherein the mold structures are moved into the injection molding mechanism to be moved out and cooled after injection molding, and the mold mechanisms are opened and take out the plastic products to reduce the time of the mold structures staying in the injection molding mechanism.
Furthermore, the two sides of the mould structure are provided with self-locking blocks, and when the mould structure is closed, the mould structure is connected with the self-locking blocks.
Furthermore, the mould structure comprises an upper mould and a lower mould, and a mould cavity is formed by the moulding surface of the upper mould and the moulding surface of the lower mould in a surrounding manner; when the upper die and the lower die are folded, the self-locking blocks are respectively connected with the upper die and the lower die, so that the upper die and the lower die are relatively fixed.
Furthermore, a conveying mechanism for conveying the mold structure is arranged between the injection molding mechanism and the mold opening and closing mechanism.
Furthermore, a manipulator for opening the upper die, the lower die and the self-locking block is arranged in the die opening and closing mechanism.
Furthermore, an ejector for ejecting the plastic product is arranged in the mold opening and closing mechanism.
The invention provides an injection molding method for producing an ultra-thick injection molded product at low cost, which comprises the following steps:
moving the closed and locked mold structure into an injection molding mechanism;
injecting a molten material into a mold cavity of the mold structure with the injection mechanism;
moving the mold structure which completes the injection molding process out of the injection molding mechanism, and performing the injection molding process of the next set of mold structure;
cooling the mold structure which completes the injection molding process and is moved out of the injection molding mechanism;
and moving the mold structure completing the cooling process into a mold opening and closing mechanism, opening the mold structure by utilizing the mold opening and closing mechanism, and taking out the plastic product.
Further, the method also comprises the following steps:
after the plastic product is taken out, the mold opening and closing mechanism closes the mold structure, pushes the self-locking block to lock the mold structure, and the mold structure is transferred to the side of the injection molding mechanism by the conveying mechanism for later use.
Further, the steps of: cooling the mold structure which completes the injection molding process and is moved out of the injection molding mechanism, and specifically comprises:
injecting cold air into the mold structure.
Further, the method also comprises the following steps:
opening self-locking blocks at two sides of the mold structure;
and opening the mold structure and ejecting the plastic product.
The invention has the beneficial effects that: this application utilizes the cooperation of injection molding mechanism and mould mechanism that opens and shuts, the mould structure that can auto-lock accomplishes the back of moulding plastics in injection molding mechanism, just remove and cool off, treat the molten plastics cooling solidification back in the mould structure, construct the auto-lock piece with the mould structure by the mould mechanism that opens and shuts, go up mould and lower mould and open and take out plastic products, the dwell time of mould structure in injection molding mechanism is shortened by a wide margin, at the in-process that plastics cooling solidification, injection molding mechanism can continuously mould plastics for other mould structures, can the many sets of mould structures of single injection molding mechanism operation in process of production, the cost of moulding plastics that significantly reduces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
FIG. 1 is a block diagram of an injection molding system for producing ultra-thick injection molded articles at low cost, according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mold structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of an injection molding mechanism according to an embodiment of the present invention in operation;
FIG. 4 is a view showing a state in which the mold opening and closing mechanism according to the embodiment of the present invention is operated;
FIG. 5 is a block flow diagram of an injection molding method for producing an ultra-thick injection molded article at low cost according to an embodiment of the present invention.
In the figure, 1, a mold structure; 2. an injection molding mechanism; 3. a mold opening and closing mechanism; 11. a self-locking block; 12. an upper die; 13. a lower die; 31. and (7) an ejector.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
The embodiment of the invention is shown in fig. 1 to 4, and provides an injection molding system for producing an ultra-thick injection molding product at low cost, which comprises a plurality of sets of self-locking mold structures 1, a mold opening and closing mechanism 3 for opening or closing the mold structures 1, and an injection molding mechanism 2 for injecting molten plastic into a mold cavity of the mold structures 1, wherein the mold structures 1 are moved into the injection molding mechanism 2 for injection and then are moved out for cooling, and the cooled mold mechanisms are opened through the mold opening and closing mechanism 3 and the plastic product is taken out, so that the residence time of the mold structures 1 in the injection molding mechanism 2 is reduced.
The mold structure 1 can realize self-locking without mechanical locking of the injection molding mechanism 2. After the closed and locked mold structure 1 is moved to a workbench of the injection molding mechanism 2, a nozzle of the injection molding mechanism 2 is driven by a driving piece to move downwards, the nozzle is aligned to a sprue of the mold structure 1, molten plastic is injected into a mold cavity of the mold structure 1, after injection molding is completed, the nozzle retracts, and the mold structure 1 is moved out of the injection molding mechanism 2 to be cooled. Because the mold structure 1 can be self-locked, the molten plastic does not expand the mold. After the set of mold structure 1 completes the injection molding process and is moved out for cooling, the injection molding mechanism 2 can perform the injection molding process of the next set of mold structure 1 without waiting for the cooling of the current mold structure 1.
After the plastic in the mold structure 1 is cooled and solidified, the mold structure 1 is moved into a mold opening and closing mechanism 3, the mold opening and closing mechanism 3 unlocks and opens the mold structure 1 which is closed and locked, and ejects out the plastic product, after the plastic product is taken out by a worker, the mold opening and closing mechanism 3 closes and locks the mold structure 1, and then the mold structure 1 is moved out of the mold opening and closing mechanism 3 to the side of the injection molding mechanism 2 for standby.
In this process, the time taken for the mold structure 1 to move out of the injection mechanism 2 after completion of injection molding is about 1 minute. The cycle time for opening and removing the plastic product in the mold opening and closing mechanism 3 of the cooled mold structure 1 is shorter than that of the injection molding process, and the cost required is far lower than that required for waiting for cooling in the injection mechanism 2.
Adopt this scheme, can shorten the time that mould structure 1 stops in mechanism 2 of moulding plastics by a wide margin, at the in-process that plastics cooling solidifies, mechanism 2 of moulding plastics can continuously be for other mould structure 1 processes of moulding plastics, need not to be idle because of waiting for the plastics cooling, and single mechanism 2 of moulding plastics can operate many sets of mould structure 1 in process of production, the greatly reduced cost of moulding plastics.
In a further embodiment, the mold structure 1 is provided with self-locking blocks 11 on both sides, and when the mold structure 1 is closed, the mold structure 1 is connected with the self-locking blocks 11.
In a further embodiment, the mold structure 1 comprises an upper mold 12 and a lower mold 13, and the molded surface of the upper mold 12 and the molded surface of the lower mold 13 enclose a mold cavity; when the upper die 12 and the lower die 13 are closed, the self-locking blocks 11 are respectively connected with the upper die 12 and the lower die 13, so that the upper die 12 and the lower die 13 are relatively fixed.
Before injection molding, the upper die 12 and the lower die 13 are folded by the die opening and closing mechanism 3, then the self-locking block 11 is pushed to the two sides of the upper die 12 and the lower die 13 and is connected with the upper die 12 and the lower die 13, self-locking fixation is realized by means of friction force generated between the inner wall of the self-locking block 11 and the inclined surface of the upper die 12 and between the inner wall of the self-locking block 11 and the inclined surface of the lower die 13, and the self-locking fixation cannot be separated in the injection molding and cooling processes.
In a further embodiment, a transport mechanism for transporting the mold structure 1 is provided between the injection mechanism 2 and the mold opening and closing mechanism 3.
The processes of moving the mold structure 1 into or out of the injection molding mechanism 2, moving the mold structure 1 into or out of the mold opening and closing mechanism 3, and transferring the mold structure 1 from the mold opening and closing mechanism 3 to the injection molding mechanism 2 for standby are all realized by the conveying mechanism.
In the above embodiment, the injection mechanism 2 is an injection molding machine, the mold opening and closing mechanism 3 is a mold opening and closing machine, and the transportation mechanism may be a conveyor belt structure or a transportation robot.
In the above embodiment, when the mold structure 1 is moved into the injection mechanism 2 or the mold opening and closing mechanism 3, the mold structure can be positioned on the workbench of the injection mechanism 2 or the workbench of the mold opening and closing mechanism 3.
In a further embodiment, the mold opening and closing mechanism 3 is provided with a robot for opening the upper mold 12, the lower mold 13 and the self-locking piece 11.
The self-locking function of the mold structure 1 depends on the friction force generated between the inner wall of the self-locking block 11 and the inclined surface of the upper mold 12 and between the inner wall of the self-locking block 11 and the inclined surface of the lower mold 13 to realize self-locking fixation. During locking and unlocking of the mold structure 1, the self-locking piece 11 needs to be pushed to be connected with the upper mold 12 and the lower mold 13 and pulled out from the mold structure 1 by means of external force.
In a further embodiment, an ejector 31 for ejecting the plastic product is provided in the mold opening and closing mechanism 3.
Specifically, after the mold structure 1 after cooling is moved into the mold opening and closing mechanism 3, the mechanical arm pulls out the self-locking blocks 11 on the two sides of the mold structure 1, the mechanical arm lifts the upper mold 12 to open the mold, the ejector 31 jacks up the plastic product in the mold structure 1, after the worker takes out the plastic product, the mechanical arm drives the upper mold 12 to move downwards to close the lower mold 13, and then the mechanical arm pushes the self-locking blocks 11 on the two sides towards the middle until the self-locking blocks 11 are connected with the upper mold 12 and the lower mold 13, so that the mold structure 1 is locked.
In another embodiment, as shown in FIG. 5, the present invention provides an injection molding method for producing an ultra-thick injection molded article at low cost, comprising the steps of:
s100, moving the closed and locked mold structure into an injection molding mechanism;
s200, injecting a molten material into a mold cavity of a mold structure by using an injection molding mechanism;
s300, moving the mold structure completing the injection molding process out of the injection molding mechanism, and performing the injection molding process of the next set of mold structure;
s400, cooling the mold structure which completes the injection molding process and is moved out of the injection molding mechanism;
and S500, moving the mold structure which finishes the cooling process into a mold opening and closing mechanism, opening the mold structure by using the mold opening and closing mechanism, and taking out the plastic product.
Further, the method also comprises the following steps:
after the plastic product is taken out, the mold opening and closing mechanism closes the mold structure, the self-locking block is pushed to lock the mold structure, and the mold structure is transferred to the side of the injection molding mechanism for standby by the conveying mechanism.
Further, the steps of: to accomplishing the flow of moulding plastics and being shifted out the mechanism of moulding plastics the mould structure cools off, specifically includes:
injecting cold air into the mold structure.
Further, the method also comprises the following steps:
opening self-locking blocks at two sides of the mold structure;
and opening the mold structure and ejecting the plastic product.
And moving the closed and locked mold structure into a workbench of an injection molding mechanism, heating the plastic by the injection molding mechanism to form molten plastic after positioning and calibration, and injecting the molten plastic into a mold cavity of the mold structure through a nozzle. And after the injection molding process of the mold structure is completed, the mold structure is moved out of the injection molding mechanism for cooling, and the time consumed in the process of moving the mold structure out of the injection molding mechanism is about 1 minute. The injection molding mechanism performs injection molding on the next set of mold structure.
The cooling of the mold structure, which has completed the injection molding process and has been removed from the injection molding device, by the introduction of cold air until the plastic has cooled and solidified is very cost-effective. After plastics in the mould structure cool off and solidify, through the transport mechanism with this mould structure immigration mould mechanism that opens and shuts, the manipulator of the mechanism that opens and shuts of mould pulls open the self-locking piece of mould structure both sides, the ejecting plastic products of ejector, after the staff took out the plastic products, the manipulator of the mechanism that opens and shuts of mould closes up mould and lower mould again, the manipulator promotes the self-locking piece of both sides to the centre, make the self-locking piece be connected with last mould and lower mould respectively, all there is frictional force between the inclined plane of inner wall and the last mould of self-locking piece and the inclined plane of the inner wall of self-locking piece and lower mould, rely on this frictional force mould structure to realize the auto-lock fixed. After the mold structure is closed and locked, the mold structure is transferred to the side of the injection molding mechanism by the conveying mechanism for standby, and in the process, the time beat of the mold structure staying on the mold opening and closing mechanism is shorter than the time beat of the mold structure staying on the injection molding mechanism, and the cost of the mold structure is far lower than the cost of the mold structure waiting in the injection molding mechanism.
Specifically, for example, with conventional injection molding methods, the mold structure requires the time for injection molding and cooling in the injection molding mechanism, and the same time for multiple stages for producing multiple super-thick plastic articles. By adopting the injection molding method, more super-thick plastic products can be produced in the same time, the time required for producing the same number of super-thick plastic products is shorter, and the injection molding cost is far lower than that consumed by the traditional injection molding method.
It will be appreciated that modifications and variations are possible to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims (10)

1. An injection molding system for producing ultra-thick injection molded products with low cost is characterized in that: the automatic injection molding machine comprises a plurality of sets of self-locking mold structures, a mold opening and closing mechanism used for opening or closing the mold structures, and an injection molding mechanism used for injecting molten plastic into a mold cavity of the mold structures, wherein the mold structures are moved into the injection molding mechanism to be subjected to injection molding and then are moved out for cooling, and the mold mechanisms which are cooled through the mold opening and closing mechanism are opened and take out plastic products, so that the time of the mold structures staying in the injection molding mechanism is shortened.
2. An injection molding system as claimed in claim 1, wherein said mold structure is provided with a self-locking block on each side thereof, said mold structure being connected to said self-locking block when said mold structure is closed.
3. The injection molding system of claim 2, wherein the mold structure comprises an upper mold and a lower mold, the mold surface of the upper mold and the mold surface of the lower mold enclosing a mold cavity; when the upper die and the lower die are folded, the self-locking blocks are respectively connected with the upper die and the lower die, so that the upper die and the lower die are relatively fixed.
4. The injection molding system of claim 3, wherein the mold opening and closing mechanism is provided with a manipulator for opening the upper mold, the lower mold and the self-locking block.
5. The injection molding system of claim 1, wherein a transport mechanism for transporting the mold structure is disposed between the injection mechanism and the mold opening and closing mechanism.
6. The injection molding system of claim 1, wherein the mold opening and closing mechanism includes an ejector for ejecting the plastic article.
7. An injection molding method for producing an ultra-thick injection molded product at low cost is characterized in that: the method comprises the following steps:
moving the closed and locked mold structure into an injection molding mechanism;
injecting a molten material into a mold cavity of the mold structure with the injection mechanism;
moving the mold structure which completes the injection molding process out of the injection molding mechanism, and performing the injection molding process of the next set of mold structure;
cooling the mold structure which completes the injection molding process and is moved out of the injection molding mechanism;
and moving the mold structure completing the cooling process into a mold opening and closing mechanism, opening the mold structure by using the mold opening and closing mechanism, and taking out the plastic product.
8. An injection molding method as claimed in claim 7, further comprising the step of:
after the plastic product is taken out, the mold opening and closing mechanism closes the mold structure, pushes the self-locking block to lock the mold structure, and the mold structure is transferred to the side of the injection molding mechanism by the conveying mechanism for later use.
9. An injection molding method according to claim 7, wherein the steps of: cooling the mold structure which completes the injection molding process and is moved out of the injection molding mechanism, and specifically comprises:
injecting cold air into the mold structure.
10. An injection molding method as claimed in claim 7, further comprising the step of:
opening self-locking blocks at two sides of the mold structure;
and opening the mold structure, and ejecting the plastic product.
CN202210866916.XA 2022-07-22 2022-07-22 Injection molding system and method for producing ultra-thick injection molding product at low cost Pending CN115284528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210866916.XA CN115284528A (en) 2022-07-22 2022-07-22 Injection molding system and method for producing ultra-thick injection molding product at low cost

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210866916.XA CN115284528A (en) 2022-07-22 2022-07-22 Injection molding system and method for producing ultra-thick injection molding product at low cost

Publications (1)

Publication Number Publication Date
CN115284528A true CN115284528A (en) 2022-11-04

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Application Number Title Priority Date Filing Date
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Country Status (1)

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