CN111391217B - Automatic demoulding type thermal transfer printing mould and equipment - Google Patents
Automatic demoulding type thermal transfer printing mould and equipment Download PDFInfo
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- CN111391217B CN111391217B CN202010200368.8A CN202010200368A CN111391217B CN 111391217 B CN111391217 B CN 111391217B CN 202010200368 A CN202010200368 A CN 202010200368A CN 111391217 B CN111391217 B CN 111391217B
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- thermal transfer
- air pipe
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
- B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
- B29C37/0032—In-mould coating, e.g. by introducing the coating material into the mould after forming the article the coating being applied upon the mould surface before introducing the moulding compound, e.g. applying a gelcoat
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
- B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
- B29C2037/0046—In-mould printing, in-mould transfer printing
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14688—Coating articles provided with a decoration
- B29C2045/14704—Coating articles provided with a decoration ink decorations
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies
- B29C2045/1477—Removable inserts, e.g. the insert being peeled off after moulding
Abstract
The invention relates to the technical field of thermal transfer printing, and particularly discloses an automatic demolding type thermal transfer printing mold and equipment, wherein the automatic demolding type thermal transfer printing mold comprises: a first die; the second die forms a cavity between the first die and the second die; an air tube fixed in the first mold; the baffle is provided with a through hole; the transverse pushing mechanism is connected with the baffle and is used for pushing the baffle; when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be aligned with the air pipe, the air pipe is communicated with the cavity through the through hole, and when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be staggered with the air pipe, the baffle plate seals the air pipe and the cavity respectively. The invention provides an automatic demolding type thermal transfer printing mold and equipment, which can realize automatic demolding of products and improve production efficiency.
Description
Technical Field
The invention relates to the technical field of thermal transfer printing, in particular to an automatic demolding type thermal transfer printing mold and equipment.
Background
In-mold thermal transfer printing is a process for realizing ink pattern manufacturing while injection molding. Generally, referring to fig. 1, a thermal transfer mold includes an upper mold and a lower mold, a cavity is formed between the upper mold and the lower mold, a foil film with an ink pattern is positioned between the upper mold and the lower mold, the upper mold and the lower mold are closed when thermal transfer is performed, then a sizing material is injected into the cavity, the sizing material heats the ink pattern while forming in the cavity, so that the ink pattern is transferred to the surface of the formed sizing material, and after the mold is opened, the ink pattern is separated from the foil film, thereby completing the thermal transfer process.
In the process, the product is stuck in the cavity and does not fall down after the mold is opened, the traditional treatment mode is generally to carry out demolding treatment manually, the treatment efficiency is low, and the economic benefit of the product is greatly reduced.
Therefore, the conventional thermal transfer mold needs to be improved to solve the problem that the automatic demolding of the product cannot be realized.
Disclosure of Invention
An object of the present invention is to provide an automatic demolding type thermal transfer mold and apparatus, which can achieve automatic demolding of products and improve production efficiency.
To achieve the above objects, in one aspect, the present invention provides an automatic demolding type thermal transfer mold, comprising:
a first die;
the second die forms a cavity between the first die and the second die;
an air tube fixed in the first mold;
the baffle is provided with a through hole;
the transverse pushing mechanism is connected with the baffle and is used for pushing the baffle; when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be aligned with the air pipe, the air pipe is communicated with the cavity through the through hole, and when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be staggered with the air pipe, the baffle plate seals the air pipe and the cavity respectively.
Preferably, the method further comprises the following steps:
a three-way valve including a switch operable to place the first port in communication with the second port or the first port in communication with the third port; the first port is in communication with the air tube;
an air extraction device in communication with the second port;
and the gas supply equipment is communicated with the third port.
Preferably, the baffle plate comprises a transverse plate provided with the through hole and a vertical plate vertical to the transverse plate; the horizontal pushing mechanism comprises:
the armature is fixedly connected with the vertical plate;
the fixed block is fixedly connected with the first die;
one end of the sliding rod is fixedly connected with the vertical plate, and the other end of the sliding rod is connected with the fixed block in a sliding manner;
the iron core is fixedly connected with the fixed block;
a coil wound outside the iron core; when the coil is electrified, the armature drives the baffle plate to be close to the fixed block so that the through hole is aligned with the air pipe.
Preferably, a first limiting ring and a second limiting ring located on one side, far away from the armature, of the first limiting ring are fixed on the sliding rod, the fixed block is located between the two limiting rings, and when the first limiting ring abuts against the fixed block, the through hole is aligned with the air pipe.
Preferably, the lateral pushing mechanism further comprises:
and the compression spring is positioned between the armature and the fixed block and is used for driving the armature to move towards the direction far away from the iron core.
Preferably, a pressure sensor is further arranged between the first die and the second die, and the pressure sensor is electrically connected with the coil through a control device.
Preferably, the first die is provided with a containing cavity inside, and the transverse pushing mechanism is located in the containing cavity.
In another aspect, the present invention provides a thermal transfer apparatus comprising any of the above-described automatic mold-releasing thermal transfer molds.
The invention has the beneficial effects that: after the die is closed, when injection molding is needed, a transverse pushing mechanism drives a baffle plate to enable a through hole and an air pipe to be staggered, the die cavity is sealed, and then glue is injected; after the sizing material is formed, the transverse pushing mechanism drives the through hole to align with the air pipe; when the mold is opened, if the product is adhered to the first mold, the air pipe blows out compressed air to separate the product from the first mold, and if the product is adhered to the second mold, the air pipe performs air suction to separate the product from the second mold. The operation mode can realize automatic demoulding of the product, reduce manual operation and improve production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a thermal transfer mold provided in the background art;
FIG. 2 is a schematic structural view of an automatic demolding type thermal transfer mold when a through hole is aligned with an air tube according to an embodiment;
FIG. 3 is a schematic structural view of an automatic demolding type thermal transfer mold in which a through hole is staggered with an air tube according to an embodiment;
FIG. 4 is a schematic structural view of the lateral pushing mechanism in FIG. 3;
fig. 5 is a schematic connection diagram of a three-way valve provided in the embodiment.
In the figure:
1. an upper die; 2. a lower die; 3. a cavity; 4. a foil membrane; 401. printing ink patterns;
5. a first die; 501. an accommodating cavity; 6. a second mold; 7. an air tube;
8. a baffle plate; 801. a through hole;
9. a transverse pushing mechanism; 901. an armature; 902. a fixed block; 903. a slide bar; 904. an iron core; 905. a coil; 906. a first limit ring; 907. a second stop collar; 908. a compression spring;
10. a three-way valve; 1001. a switching device;
11. air extraction equipment; 12. a gas supply device;
13. a pressure sensor.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment provides a thermal transfer apparatus including an automatic mold-releasing thermal transfer mold. Referring to fig. 2 to 4, the automatic mold-releasing type thermal transfer mold includes a first mold 5, a second mold 6, an air tube 7, a shutter 8, and a lateral pushing mechanism 9.
Wherein a cavity 3 is formed between the first die 5 and the second die 6. The air tube 7 is fixed in the first mold 5. The baffle 8 is provided with a through hole 801. The transverse pushing mechanism 9 is connected with the baffle 8 and used for pushing the baffle 8; referring to fig. 2, when the transverse pushing mechanism 9 pushes the baffle plate 8 to align the through hole 801 with the air pipe 7, the air pipe 7 communicates with the cavity 3 through the through hole 801; referring to fig. 3, when the transverse pushing mechanism 9 pushes the baffle plate 8 to make the through hole 801 staggered with the air pipe 7, the baffle plate 8 seals the air pipe 7 and the cavity 3 respectively.
Alternatively, the glue injection hole may be in the second mold 6 or the first mold 5.
It should be noted that the foil 4 is still located between the first mold 5 and the second mold 6, and the specific transfer process of the ink pattern 401 is the same as that in the prior art, which is not the focus of this application and therefore is not described herein again.
After the die is closed, when injection molding is required, the transverse pushing mechanism 9 drives the baffle 8 to make the through hole 801 staggered with the air pipe 7, the cavity 3 is sealed, and then glue is injected; after the sizing material is formed, the transverse pushing mechanism 9 drives the through hole 801 to align with the air pipe 7; when the mold is opened, if the product adheres to the first mold 5, the air pipe 7 blows compressed air to separate the product from the first mold 5, and if the product adheres to the second mold 6, the air pipe 7 performs air suction to separate the product from the second mold 6. The operation mode can realize automatic demoulding of the product, reduce manual operation and improve production efficiency.
Referring to fig. 5, in the present embodiment, the automatic mold-releasing type thermal transfer mold further includes a three-way valve 10, a suction device 11, and an air supply device 12. The three-way valve 10 comprises a switching device 1001, a first port, a second port and a third port, and the first port and the second port can be communicated or the first port and the third port can be communicated by operating the switching device 1001; the first port communicates with the air tube 7. The air extraction device 11 communicates with the second port. The gas supply 12 communicates with the third port.
Optionally, the air-extracting device 11 is a vacuum pump, and can provide negative pressure for the air pipe 7 to suck up the product adhered to the second mold 6; the air supply device 12 is an air compressor. The air pipe 7 may be supplied with compressed air to blow out the product adhered to the first mold 5.
Further, the baffle plate 8 includes a horizontal plate provided with the through hole 801 and a vertical plate perpendicular to the horizontal plate. Optionally, the lateral pushing mechanism 9 includes an armature 901, a fixed block 902, a sliding rod 903, an iron core 904, and a coil 905. The armature 901 is fixedly connected with the vertical plate. The fixing block 902 is fixedly connected with the first die 5. One end of the sliding rod 903 is fixedly connected with the vertical plate, and the other end of the sliding rod 903 is connected with the fixed block 902 in a sliding mode. The iron core 904 is fixedly connected with the fixed block 902. The coil 905 is wound outside the iron core 904; when the coil 905 is energized, the armature 901 drives the baffle plate 8 close to the fixed block 902 to align the through hole 801 with the air pipe 7.
Alternatively, an air cylinder or a hydraulic cylinder may be used as the traverse mechanism 9.
In this embodiment, the sliding rod 903 is fixed with a first limiting ring 906 and a second limiting ring 907 located on a side of the first limiting ring 906 away from the armature 901, the fixing block 902 is located between the two limiting rings, and when the first limiting ring 906 abuts against the fixing block 902, the through hole 801 is aligned with the air pipe 7. It should be noted that the second retainer 907 can prevent the sliding rod 903 from separating from the fixing block 902.
Further, the lateral pushing mechanism 9 further includes a compression spring 908, and the compression spring 908 is located between the armature 901 and the fixed block 902 and is used for driving the armature 901 to move away from the iron core 904.
Specifically, when the coil 905 is de-energized, the compression spring 908 drives the baffle 8 to move away from the fixing block 902, so that the through hole 801 is staggered with the air pipe 7.
Optionally, a pressure sensor 13 is further disposed between the first die 5 and the second die 6, and the pressure sensor 13 is electrically connected to the coil 905 through a control device.
It should be noted that, when the first mold 5 and the second mold 6 are closed, the pressure value acquired by the pressure sensor 13 increases, indicating that injection molding is about to be performed, the control device causes the coil 905 to lose power, the iron core 904 to be demagnetized, the compression spring 908 pushes the baffle plate 8 to the left, the through hole 801 to move to the left, and the pipe orifice of the air pipe 7 is sealed by the baffle plate 8, so as to avoid affecting injection molding in the cavity 3. After the injection molding is finished, the first mold 5 and the second mold 6 are separated, the pressure sensor 13 senses that the pressure is reduced, the mold is opened, the coil 905 is electrified by the control device, the iron core 904 is magnetically connected with the armature 901, the armature 901 drives the baffle plate 8 to move rightwards, and the through hole 801 is aligned with the orifice of the air pipe 7.
Optionally, the air pipe 7 is communicated with the air extraction device 11, and the product is attached to the first die 5 by suction, so that the product can be separated from the second die 6; the gas pipe 7 is then connected to the gas supply device 12 by the three-way valve 10, and the gas pipe 7 blows the product away from the first die 5, so that the product can be demoulded, which in turn enables the automatic separation of the product from the second die 6 and the first die 5.
In a preferred embodiment, the first mold 5 is provided with a receiving cavity 501 inside, and the lateral pushing mechanism 9 is located in the receiving cavity 501.
It can be understood that such a layout can make the entire automatic demolding type thermal transfer mold compact, facilitate the reduction of the volume of the apparatus and facilitate the assembly of the mold.
It should be noted that the first die 5 and the second die 6 in the present embodiment may be an upper die and a lower die, respectively, or a left die and a right die, respectively, or a fixed die and a movable die, respectively, and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. An automatic demolding type thermal transfer mold, comprising:
a first die;
the second die forms a cavity between the first die and the second die;
an air tube fixed in the first mold;
the baffle is provided with a through hole;
the transverse pushing mechanism is connected with the baffle and is used for pushing the baffle; when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be aligned with the air pipe, the air pipe is communicated with the cavity through the through hole, and when the transverse pushing mechanism pushes the baffle plate to enable the through hole to be staggered with the air pipe, the baffle plate seals the air pipe and the cavity respectively;
wherein the content of the first and second substances,
the baffle comprises a transverse plate provided with the through hole and a vertical plate vertical to the transverse plate; the horizontal pushing mechanism comprises:
the armature is fixedly connected with the vertical plate;
the fixed block is fixedly connected with the first die;
one end of the sliding rod is fixedly connected with the vertical plate, and the other end of the sliding rod is connected with the fixed block in a sliding manner;
the iron core is fixedly connected with the fixed block;
a coil wound outside the iron core; when the coil is electrified, the armature drives the baffle plate to be close to the fixed block so that the through hole is aligned with the air pipe;
the compression spring is positioned between the armature and the fixed block and is used for driving the armature to move towards the direction far away from the iron core;
a first limiting ring and a second limiting ring which is positioned on one side of the first limiting ring away from the armature are fixed on the sliding rod, the fixed block is positioned between the two limiting rings, and when the first limiting ring abuts against the fixed block, the through hole is aligned with the air pipe;
the first die is internally provided with an accommodating cavity, and the transverse pushing mechanism is positioned in the accommodating cavity.
2. The automatic, release thermal transfer mold of claim 1, further comprising:
a three-way valve including a switch operable to place the first port in communication with the second port or the first port in communication with the third port; the first port is in communication with the air tube;
an air extraction device in communication with the second port;
and the gas supply equipment is communicated with the third port.
3. The automatic release thermal transfer mold of claim 1, further comprising a pressure sensor disposed between the first mold and the second mold, the pressure sensor being electrically connected to the coil via a control device.
4. A thermal transfer apparatus comprising the automatic mold-releasing thermal transfer mold according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200368.8A CN111391217B (en) | 2020-03-20 | 2020-03-20 | Automatic demoulding type thermal transfer printing mould and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200368.8A CN111391217B (en) | 2020-03-20 | 2020-03-20 | Automatic demoulding type thermal transfer printing mould and equipment |
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| Publication Number | Publication Date |
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| CN111391217A CN111391217A (en) | 2020-07-10 |
| CN111391217B true CN111391217B (en) | 2021-11-30 |
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| CN202010200368.8A Active CN111391217B (en) | 2020-03-20 | 2020-03-20 | Automatic demoulding type thermal transfer printing mould and equipment |
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| CN115195021B (en) * | 2022-07-14 | 2023-09-26 | 艾尔玛科技股份有限公司 | Automatic take off mode heat transfer printing mould and transfer printing equipment |
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| CN206317342U (en) * | 2016-12-19 | 2017-07-11 | 昆山市研通模具有限公司 | A kind of encapsulation die with air extractor |
| CN108058318A (en) * | 2017-12-11 | 2018-05-22 | 上海电机学院 | A kind of non-flat noodles insert-fixing device |
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