CN109927251B - Secondary injection mold with single mold opening and operation process - Google Patents
Secondary injection mold with single mold opening and operation process Download PDFInfo
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- CN109927251B CN109927251B CN201910202195.0A CN201910202195A CN109927251B CN 109927251 B CN109927251 B CN 109927251B CN 201910202195 A CN201910202195 A CN 201910202195A CN 109927251 B CN109927251 B CN 109927251B
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- 238000001746 injection moulding Methods 0.000 claims abstract description 87
- 239000000463 material Substances 0.000 claims abstract description 51
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- 239000000498 cooling water Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 18
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- 230000009471 action Effects 0.000 claims description 6
- 238000009966 trimming Methods 0.000 claims description 6
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- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a single-time die-opening secondary injection mold and an operation process, which belong to the technical field of injection molds, and comprise a front mold and a rear mold, wherein a plurality of buckles are connected between the front mold and the rear mold, one side of the front mold is provided with two injection molding machine bodies, an injection rod is connected to the injection machine bodies, one end of the injection rod, which is far away from the injection machine bodies, is connected with a nozzle, an injection hole matched with the injection rod is cut on the front mold, a pair of main limiting grooves are cut in the front mold, a main limiting block is connected in a sliding manner in the main limiting grooves, a main electric sliding table is fixedly connected in the main limiting grooves, the sliding end of the main electric sliding table is fixedly connected with a main fixing block, only one set of mold is needed, the secondary injection molding can be completed through one-time die opening, the operation procedure is simplified, the secondary die opening and secondary polishing finishing are not needed, the investment of manpower and material resources can be greatly reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a single-time mold opening secondary injection mold and an operation process.
Background
The secondary injection molding can fully fill the soft feel on the surface of the product, and can also increase the functionality and added value of the product. Over the last 10 years, the two shot molding technique has drastically changed consumer product aesthetic standards, design considerations, and functional requirements. The overmolding technique is known to create a "soft feel surface," but it also has many other functions such as ergonomic design, two-color appearance, brand identification, and improvement in properties. With this technology, functions of the product such as noise reduction, vibration reduction, water resistance, collision prevention, and added value can be increased. The application of the protective cover is wider in the mobile phone protective cover.
And (3) secondary injection molding: is a special plastic molding process, also called beer set or rubber coating. It is similar to the two-color molding process, but differs considerably from the two-color molding process. The method is a process for molding a certain plastic raw material in a primary plastic mold, taking out the molded part, putting the molded part into a secondary molding mold, and injecting the same kind of plastic material or another plastic material again. More complex is multiple molding, which allows the shape and process of the plastic product to meet the desired requirements, known as two shot molding.
In the prior art, the part after the first injection molding is required to be taken out, and as the mold closing and opening part and the charging hole of the mold have certain flaws, the part still needs to be polished and trimmed after being taken out and cooled, then the part is put into the mold for the second molding, and then the part is polished and trimmed for the second time, so that the process is complex, the manpower and material resources are wasted, at least two injection molding machines and two sets of molds are required, and the mold cost is high.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a single-time mold-opening secondary injection mold and an operation process, which can realize that secondary injection can be completed only by one set of mold and one mold opening, thereby greatly simplifying the operation procedure, avoiding secondary mold opening and secondary polishing and trimming, greatly reducing the investment of manpower and material resources and improving the production efficiency.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides a secondary injection mold and operation technology of single die sinking, includes front mould and rear mould, be connected with a plurality of buckles between front mould and the rear mould, one side of front mould is equipped with two injection molding machine bodies, be connected with the injection pole on the injection molding machine body, the one end that the injection pole kept away from the injection molding machine body is connected with the nozzle, the excavation has the injection hole with injection pole assorted on the front mould, the inside excavation of front mould has a pair of main spacing groove, the inside sliding connection of main spacing groove has the main stopper, the inside fixedly connected with main electronic slip table of main spacing groove, the sliding end fixedly connected with main fixed block of main electronic slip table, one of them the excavation has with injection hole assorted on the main stopper, interior fixedly connected with has a pair of vice spacing groove, the inside sliding connection of vice spacing groove has vice stopper, the inside fixedly connected with vice electronic slip table of vice sliding connection, the inside fixedly connected with of vice sliding block of vice sliding connection, two-side sliding connection has need not the auxiliary sliding block, two-side die cavity and two-side die parts, the fixed part can be accomplished the two-stage injection molding die, and the two-side die cavity is accomplished, and the two-stage injection molding mould is accomplished, and the fixed part is put into with the injection molding mould greatly.
Further, a plurality of rear cooling water holes corresponding to the primary injection molding parts are formed in the rear die, and a plurality of front cooling water holes corresponding to the primary injection molding parts are formed in the front die, so that the auxiliary cooling of the primary injection molding parts is facilitated.
Further, the lower extreme fixedly connected with of front mould advances the mechanism before, the lower extreme fixedly connected with of back mould advances the mechanism after, the downside of front mould is equipped with vice base, the upper end of vice base has the vice groove of advancing that all matches with preceding mechanism and back mechanism of advancing, and preceding mechanism and back mechanism of advancing all lie in vice groove of advancing, can realize the independent motion and the whole motion of front mould and back mould.
Further, the lower extreme of vice base is equipped with main base, the lower extreme fixedly connected with main mechanism of marcing of vice base, the main groove of marcing with main mechanism assorted that marcing on the main base has, can realize the translation of whole mould.
Further, two the one end that the main stopper is close to all is equipped with the difference cooperation district of mutual matching, can make two main stopper complex inseparabler, and the seal is stronger.
Further, the front mold is internally fixedly connected with a heating ring matched with the injection hole, and the heating ring is connected with a temperature sensor, so that the heating ring can perform heat preservation or secondary heating on the injection rod due to the longer length of the injection rod, and molten materials are prevented from being cooled in the injection rod.
Further, the heat insulation ring corresponding to the heating ring is fixedly connected in the front mold, so that the heating ring can be prevented from radiating more heat.
Further, the ball screw is driven to rotate by a motor through a coupler or a synchronous pulley, so that the sliding block fixed on the linear guide rail is pushed to move back and forth, the ball screw has the characteristics of high positioning precision, small friction force, high rigidity and strong loading capacity, accurate positioning can be achieved, the secondary injection mold is controlled by a single chip microcomputer, the model of the single chip microcomputer is an STCC single chip microcomputer with MCU_kernel, logic language is programmed into by a person skilled in the art, and automatic control can be achieved.
Furthermore, a base material is added in the injection molding machine body, the base material is a raw material of a primary injection molding part, a covering material is added in the injection molding machine body, the covering material is a raw material of a secondary injection molding part, the melting points of the base material and the covering material are similar, and the base material and the covering material have similar chemical characteristics or contain matched composite components, so that good adhesion of the primary injection molding part and the secondary injection molding part can be ensured.
A single-time mold-opening secondary injection mold comprises the following operation processes:
step one, closing the front mould and the rear mould, fixing the front mould and the rear mould through a buckle, controlling a pair of main limiting blocks to mutually close through a main electric sliding table, generating a cavity of a primary injection molding part, enabling an injection rod to be sequentially inserted into an injection hole and enabling a direct nozzle to be in close contact with the injection hole, and injecting a specified amount of molten base material into the cavity of the primary injection molding part;
step two, auxiliary cooling is carried out through the rear cooling water holes and the front cooling water holes until the melted base material is completely molded into a primary injection molding part, and the specific cooling time can be determined by one skilled in the art;
step three, without die opening, moving the die through a front advancing mechanism and a rear advancing mechanism to enable the nozzle to completely withdraw, moving the die to the other injection molding machine body through a main advancing mechanism, simultaneously controlling a pair of main limiting blocks to completely withdraw into a main limiting groove under the action of a main electric sliding table, and enabling an auxiliary limiting block to extend out under the action of an auxiliary electric sliding table to generate a cavity of a secondary injection molding part;
controlling the front advancing mechanism and the rear advancing mechanism to enable the other injection rod to be inserted into the injection hole in sequence, enabling the direct nozzle to be in close contact with the injection hole, and injecting a specified amount of molten covering material into a cavity of the primary injection molded part;
step five: after full cooling, the secondary injection molding part is completely formed by the molten covering material through auxiliary cooling of the rear cooling water hole and the front cooling water hole and is completely combined with the primary injection molding part, and the specific cooling and combining time can be determined by a person skilled in the art;
step six: and opening the buckle, then moving the rear die through the rear travelling mechanism to separate the rear die from the front die, opening the die, taking out the part combined by the primary injection molding part and the secondary injection molding part, and polishing and trimming if necessary to finish secondary injection molding.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, secondary injection molding can be completed by only one set of die through one-time die opening, the operation procedure is greatly simplified, secondary die opening and secondary polishing trimming are not needed, the investment of manpower and material resources can be greatly reduced, and the production efficiency is improved.
(2) The back mold is internally provided with a plurality of back cooling water holes corresponding to the primary injection molding parts, and the front mold is internally provided with a plurality of front cooling water holes corresponding to the primary injection molding parts, so that the auxiliary cooling of the primary injection molding parts is facilitated.
(3) The lower extreme fixedly connected with front mould advances the mechanism, and the lower extreme fixedly connected with back of back mould advances the mechanism, and the downside of front mould is equipped with vice base, and the upper end of vice base is excavated to have and advance the mechanism and advance the vice groove of advancing that all matches with front and back, and front advance the mechanism and all be located vice groove of advancing, can realize the independent motion and the whole motion of front mould and back mould.
(4) The lower extreme of vice base is equipped with main base, and the lower extreme fixedly connected with of vice base is advanced the mechanism, has the main groove of advancing with main mechanism assorted that advances on the main base, can realize the translation of whole mould.
(5) One end that two main limiting blocks are close to all is equipped with the poor position cooperation district of mutual matching, can make two main limiting block complex inseparabler, and the seal is stronger.
(6) The front mold is fixedly connected with a heating ring matched with the injection hole, the heating ring is connected with a temperature sensor, and the heating ring can perform heat preservation or secondary heating on the injection rod due to the longer length of the injection rod, so that molten materials are prevented from being cooled in the injection rod.
(7) The heat insulation ring corresponding to the heating ring is fixedly connected in the front mould, so that the heating ring can be prevented from radiating greatly.
(8) The ball screw transmission is that the motor drives the ball screw to rotate through the coupler or the synchronous pulley, so that the sliding block fixed on the linear guide rail is pushed to move back and forth, the ball screw has the characteristics of high positioning accuracy, small friction force, high rigidity and strong loading capacity, accurate positioning can be realized, the secondary injection mold is controlled by a singlechip, the model of the singlechip is an STCC (standard test control computer) singlechip with MCU (micro control unit) core, and logic language is programmed into by a person skilled in the art, so that automatic control can be realized.
(9) The base material is added in the injection molding machine body, the base material is the raw material of the primary injection molding part, the covering material is added in the injection molding machine body, the covering material is the raw material of the secondary injection molding part, the melting points of the base material and the covering material are similar, and the base material and the covering material have similar chemical characteristics or contain matched composite components, so that good adhesion of the primary injection molding part and the secondary injection molding part can be ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic diagram of the structure of FIG. 1 at A;
FIG. 3 is a front view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a main stop block retracted cross-sectional view of the present invention;
FIG. 6 is a schematic diagram of a two-shot injection molding structure of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6 at B;
FIG. 8 is a schematic diagram of an open mold structure of the present invention;
fig. 9 is a schematic diagram of an STC89C52 single-chip microcomputer with an mcu_51 core.
The reference numerals in the figures illustrate:
the injection molding machine comprises a primary injection molding part, a secondary injection molding part, a front mold 1, a front advancing mechanism 101, a rear mold 2, a rear advancing mechanism 201, a 3 buckle, a 4 injection molding machine body, a 401 injection rod, a 402 nozzle, a 5-pair base, a 501-pair advancing groove, a 502-pair advancing mechanism, a 6-pair base, a 601-pair advancing groove, a 7-pair limiting groove, a 701-pair limiting block, a 702-pair electric sliding table, a 703-pair fixing block, an 8-pair limiting groove, a 801-pair limiting block, an 802-pair electric sliding table, a 803-pair fixing block, a 9 heating ring, a 10-pair heat insulation ring, a 11-pair cooling water hole and a 12-pair front cooling water hole.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only a few embodiments of the present invention; but not all embodiments, are based on embodiments in the present invention; all other embodiments obtained by those skilled in the art without undue burden; all falling within the scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1-7, a secondary injection mold for single mold opening and an operation process thereof, the secondary injection mold comprises a front mold 1 and a rear mold 2, a plurality of buckles 3 are connected between the front mold 1 and the rear mold 2, one side of the front mold 1 is provided with two injection molding machine bodies 4, an injection rod 401 is connected to the injection molding machine bodies 4, one end of the injection rod 401 far away from the injection molding machine bodies 4 is connected with a nozzle 402, an injection hole matched with the injection rod 401 is cut on the front mold 1, a pair of main limit grooves 7 are cut inside the front mold 1, a main limit block 701 is connected inside the main limit grooves 7 in a sliding manner, a main limit block 701 is fixedly connected inside the main limit grooves 7, a main electric sliding table 702 is fixedly connected inside the main limit grooves 7, a main fixing block 703 is fixedly connected with the main fixing block 703, one main limit block 703 is fixedly connected with the main limit block 701, 704 matched with the main limit block 704 is fixedly connected inside the main limit block 704, 705 is fixedly connected with the nozzle 402, a pair of auxiliary limit grooves 8 are cut inside the front mold 1, a pair of auxiliary limit grooves 801 are connected inside the auxiliary limit grooves 8, a pair of auxiliary limit blocks 802 are connected inside the auxiliary limit grooves 802, two auxiliary limit blocks 803 are fixedly connected inside the auxiliary limit blocks 802, and two auxiliary limit blocks 803 are fixedly connected with the two auxiliary limit blocks 803, and two auxiliary limit blocks 803 are fixedly connected with the front mold 01 and form a part between the two auxiliary injection mold and the front mold and the two side.
Referring to fig. 1, a plurality of rear cooling water holes 11 corresponding to the primary injection molding part 01 are formed in the rear mold 2, a plurality of front cooling water holes 12 corresponding to the primary injection molding part 01 are formed in the front mold 1, so that the auxiliary cooling of the primary injection molding part 01 is facilitated, and the two main limiting blocks 701 are provided with mutually matched difference matching areas at the ends close to each other, so that the two main limiting blocks 701 are matched more tightly and have stronger tightness.
Referring to fig. 1-4, the lower end of the front mold 1 is fixedly connected with a front travelling mechanism 101, the lower end of the rear mold 2 is fixedly connected with a rear travelling mechanism 201, the lower side of the front mold 1 is provided with a secondary base 5, the upper end of the secondary base 5 is cut with a secondary travelling groove 501 matched with the front travelling mechanism 101 and the rear travelling mechanism 201, the front travelling mechanism 101 and the rear travelling mechanism 201 are both positioned in the secondary travelling groove 501, the independent movement and the integral movement of the front mold 1 and the rear mold 2 can be realized, the lower end of the secondary base 5 is provided with a primary base 6, the lower end of the secondary base 5 is fixedly connected with a primary travelling mechanism 502, and the primary base 6 is cut with a primary travelling groove 601 matched with the primary travelling mechanism 502, so that the translation of the whole mold can be realized.
Referring to fig. 1-2, a heating ring 9 matched with an injection hole is fixedly connected in the front mold 1, a temperature sensor is connected on the heating ring 9, and the heating ring 9 can perform heat preservation or secondary heating on the injection rod 401 to prevent molten materials from being cooled in the injection rod 401 because the length of the injection rod 401 is longer, and a heat insulation ring 10 corresponding to the heating ring 9 is fixedly connected in the front mold 1 to prevent the heat dissipation of the heating ring 9 from being larger.
The ball screw transmission is that the motor drives the ball screw to rotate through the coupler or the synchronous pulley, so that the sliding block fixed on the linear guide rail is pushed to move back and forth, the ball screw has the characteristics of high positioning precision, small friction force, high rigidity and strong loading capacity, accurate positioning can be realized, the secondary injection mold is controlled by a single chip microcomputer, the model of the single chip microcomputer is an STC89C52 single chip microcomputer with an MCU_51 kernel, logic language is programmed into by a person skilled in the art, and automatic control can be realized.
The base material is added in one injection molding machine body 4, the base material is the raw material of the primary injection molding part 01, the covering material is added in the other injection molding machine body 4, the covering material is the raw material of the secondary injection molding part 02, the melting points of the base material and the covering material are similar, and the base material and the covering material have similar chemical characteristics or contain matched composite components, so that good adhesion of the primary injection molding part 01 and the secondary injection molding part 02 can be ensured.
The operation process of the invention comprises the following steps:
step one, clamping a front die 1 and a rear die 2, fixing the front die 1 and the rear die 2 through a buckle 3, controlling a pair of main limiting blocks 701 to mutually close through a main electric sliding table 702, generating a cavity of a primary injection molding part 01, enabling an injection rod 401 to be sequentially inserted into injection holes and 704, enabling a direct nozzle 402 to be in close contact with 705, and injecting a specified amount of molten base material into the cavity of the primary injection molding part 01;
step two, auxiliary cooling is carried out through the rear cooling water holes 11 and the front cooling water holes 12 until the melted base material is completely molded into the primary injection molding part 01, and the specific cooling time can be determined by one skilled in the art;
step three, without die opening, the front travelling mechanism 101 and the rear travelling mechanism 201 are used for moving the die, so that the nozzle 402 is completely withdrawn, the main travelling mechanism 502 is used for moving the die to the other injection molding machine body 4, a pair of main limiting blocks 701 are controlled to completely withdraw into the main limiting groove 7 under the action of the main electric sliding table 702, and the auxiliary limiting blocks 801 extend out under the action of the auxiliary electric sliding table 802, so that a cavity of the secondary injection molding part 02 is generated;
step four, controlling the front travelling mechanism 101 and the rear travelling mechanism 201 to enable the other injection rod 401 to be inserted into the injection holes and 704 in sequence, enabling the direct nozzles 402 and 705 to be in close contact, and injecting a specified amount of molten covering material into a cavity of the primary injection molded part 01;
step five: after sufficient cooling, the secondary injection part 02 is formed by the auxiliary cooling of the rear cooling water holes 11 and the front cooling water holes 12 until the melted covering material is completely formed and is completely combined with the primary injection part 01, and the specific cooling and combining time can be determined by one skilled in the art;
step six: the buckle 3 is opened, then the rear mould 2 is moved through the rear travelling mechanism 201, the rear mould 2 is separated from the front mould 1, mould opening is realized, the part combined by the primary injection part 01 and the secondary injection part 02 is taken out, polishing and trimming are carried out if necessary, and secondary injection is finished.
According to the scheme, secondary injection molding can be completed by only one set of die through one-time die opening, the operation procedure is greatly simplified, secondary die opening and secondary polishing trimming are not needed, the investment of manpower and material resources can be greatly reduced, and the production efficiency is improved.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (5)
1. The utility model provides a secondary injection mold of single die sinking, includes front mould (1) and back mould (2), its characterized in that: a plurality of buckles (3) are connected between the front die (1) and the rear die (2), one side of the front die (1) is provided with two injection molding machine bodies (4), one end of the injection molding machine bodies (4) which is far away from the injection molding machine bodies (401) is connected with a nozzle (402), a pair of main limit grooves (7) are formed in the front die (1) in an cutting mode, a main limit block (701) is connected to the inside of the main limit grooves (7) in a sliding mode, a main electric sliding table (702) is fixedly connected to the inside of the main limit grooves (7), a main fixed block (703) is fixedly connected to the sliding end of the main electric sliding table (702), the main fixed block (703) is fixedly connected with the main limit block (701), one end of the main limit block (704) is provided with an injection hole matched with a nozzle (704), a pair of auxiliary limit grooves (7) are fixedly connected to the inside of the front die (1), a pair of auxiliary limit grooves (8) are connected to the inside of the auxiliary limit grooves (8) in a sliding mode, the sliding end of the auxiliary electric sliding table (802) is fixedly connected with an auxiliary fixing block (803), the auxiliary fixing block (803) is fixedly connected with an auxiliary limiting block (801), a die cavity of a primary injection molding part (01) is formed among the front die (1), the rear die (2) and the two main limiting blocks (701), and a die cavity of a secondary injection molding part (02) is formed among the primary injection molding part (01), the front die (1) and the two auxiliary limiting blocks (801); the lower end of the front die (1) is fixedly connected with a front advancing mechanism (101), the lower end of the rear die (2) is fixedly connected with a rear advancing mechanism (201), the lower side of the front die (1) is provided with a secondary base (5), the upper end of the secondary base (5) is provided with a secondary advancing groove (501) matched with the front advancing mechanism (101) and the rear advancing mechanism (201), and the front advancing mechanism (101) and the rear advancing mechanism (201) are both positioned in the secondary advancing groove (501); the lower end of the auxiliary base (5) is provided with a main base (6), the lower end of the auxiliary base (5) is fixedly connected with a main travelling mechanism (502), and a main travelling groove (601) matched with the main travelling mechanism (502) is cut on the main base (6); one ends of the two main limiting blocks (701) close to each other are provided with mutually matched difference matching areas; the front travelling mechanism (101) and the main travelling mechanism (502) are both ball screw driven electric sliding tables, the secondary injection mold is controlled by a single chip microcomputer, and the model of the single chip microcomputer is an STC89C52 single chip microcomputer with an MCU_51 kernel; the novel plastic injection molding machine comprises an injection molding machine body (4), wherein a base material is added in the injection molding machine body (4), the base material is a raw material of a primary injection molding part (01), a covering material is added in the injection molding machine body (4), the covering material is a raw material of a secondary injection molding part (02), the melting points of the base material and the covering material are similar, and the base material and the covering material have similar chemical characteristics or contain matched composite components.
2. A single-shot, two-shot injection mold according to claim 1, wherein: a plurality of rear cooling water holes (11) corresponding to the primary injection molding part (01) are formed in the rear mold (2), and a plurality of front cooling water holes (12) corresponding to the primary injection molding part (01) are formed in the front mold (1).
3. A single-shot, two-shot injection mold according to claim 1, wherein: the front mold (1) is internally and fixedly connected with a heating ring (9) matched with the injection hole, and the heating ring (9) is connected with a temperature sensor.
4. A single-shot, two-shot injection mold according to claim 1 or 3, wherein: the front mold (1) is internally and fixedly connected with a heat insulation ring (10) corresponding to the heating ring (9).
5. A single-shot, two-shot injection mold according to claim 1, wherein: the operation process comprises the following steps: step one, clamping a front die (1) and a rear die (2), fixing the front die and the rear die through a buckle (3), controlling a pair of main limiting blocks (701) to mutually close through a main electric sliding table (702), generating a cavity of a primary injection molding part (01), enabling an injection rod (401) to be sequentially inserted into an injection hole and an injection hole (704), enabling a direct nozzle (402) to be in close contact with the injection hole (705), and injecting a specified amount of molten base material into the cavity of the primary injection molding part (01); step two, cooling is assisted by the rear cooling water holes (11) and the front cooling water holes (12) until the melted base material is completely molded into a primary injection molding part (01), and the specific cooling time can be determined by a person skilled in the art; step three, without die opening, moving the die through a front advancing mechanism (101) and a rear advancing mechanism (201), enabling the nozzle (402) to completely withdraw, moving the die to the other injection molding machine body (4) through a main advancing mechanism (502), simultaneously controlling a pair of main limiting blocks (701) to completely withdraw into a main limiting groove (7) under the action of a main electric sliding table (702), and enabling the auxiliary limiting blocks (801) to extend out under the action of an auxiliary electric sliding table (802) to generate a cavity of a secondary injection molding part (02); controlling the front travelling mechanism (101) and the rear travelling mechanism (201) to enable the other injection rod (401) to be inserted into the injection hole and the injection hole (704) in sequence, enabling the direct nozzle (402) to be in close contact with the injection hole (705), and injecting a specified amount of molten covering material into a cavity of the primary injection molding part (01); step five: after full cooling, the secondary injection part (02) is formed by the auxiliary cooling of the rear cooling water hole (11) and the front cooling water hole (12) until the melted covering material is completely formed, and is completely combined with the primary injection part (01), and the specific cooling and combining time can be determined by a person skilled in the art; step six: opening the buckle (3), then moving the rear mould (2) through the rear travelling mechanism (201), separating the rear mould (2) from the front mould (1), opening the mould, taking out the part combined by the primary injection molding part (01) and the secondary injection molding part (02), and polishing and trimming if necessary, thereby finishing secondary injection molding.
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| CN112776272B (en) * | 2020-12-18 | 2022-06-24 | 杭州联和工具制造有限公司 | Thick wall injection molding method and molding mold for long-handle hand tool |
| CN113146958B (en) * | 2021-04-30 | 2024-10-22 | 常州煜明电子有限公司 | Injection mold with secondary injection molding function and injection molding method thereof |
| CN113021760A (en) * | 2021-04-30 | 2021-06-25 | 常州煜明电子股份有限公司 | Secondary injection mold with single mold opening and operation process |
| CN114261064A (en) * | 2021-12-31 | 2022-04-01 | 江苏启钊精密模具有限公司 | Injection mold and injection method for forming plane color matching product |
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| JPH0542559A (en) * | 1991-08-14 | 1993-02-23 | Japan Steel Works Ltd:The | Hollow body molding method and mold thereof |
| CN207206989U (en) * | 2017-08-29 | 2018-04-10 | 深圳市银宝山新科技股份有限公司 | Parallel-moving type double color injection mould and the injection machine with the mould |
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| JPH0542559A (en) * | 1991-08-14 | 1993-02-23 | Japan Steel Works Ltd:The | Hollow body molding method and mold thereof |
| CN207206989U (en) * | 2017-08-29 | 2018-04-10 | 深圳市银宝山新科技股份有限公司 | Parallel-moving type double color injection mould and the injection machine with the mould |
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