CN114986790B - Soft rubber injection mold of neck hanging machine and soft rubber encapsulation method of neck hanging machine - Google Patents
Soft rubber injection mold of neck hanging machine and soft rubber encapsulation method of neck hanging machine Download PDFInfo
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- CN114986790B CN114986790B CN202210448991.4A CN202210448991A CN114986790B CN 114986790 B CN114986790 B CN 114986790B CN 202210448991 A CN202210448991 A CN 202210448991A CN 114986790 B CN114986790 B CN 114986790B
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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
- B29C45/14819—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 the inserts being completely encapsulated
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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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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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
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a soft rubber injection mold and an injection method of a neck hanging machine, wherein the injection mold comprises a first soft rubber injection mold, a second soft rubber injection mold and a mold core middle plate, and a first mold core mounting cavity is formed in a first lower mold of the first soft rubber injection mold; a second mold core mounting cavity is formed in a second lower mold of the second soft rubber injection mold; the mold core middle plate can be matched with the first mold core installation cavity and the second mold core installation cavity, and a forming channel which transversely penetrates through and is open at the upper part is formed on the mold core middle plate; when the mold core middle plate is detachably arranged in the first mold core mounting cavity, the first upper mold is matched with the forming channel to form an injection cavity with a semi-annular cross section, and the injection cavity is used for injecting and forming a soft rubber bearing piece for bearing the neck of the earphone; when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second upper mold is matched with the molding channel to form a wire rod injection cavity for wrapping the neck of the earphone. The invention has good encapsulation effect, and can directly inject and press the silica gel outside the neck-hanging earphone.
Description
Technical Field
The invention relates to an encapsulation process, in particular to a soft rubber encapsulation mould and an encapsulation method of a neck hanger or other products.
Background
The neck hanging type Bluetooth headset has the advantages that the neck hanging type Bluetooth headset can be divided into a hard neck ring and a soft neck ring according to different materials of the neck ring, the hard neck ring is made of a harder plastic shell, the parts, which are contacted with the skin, of the neck ring are worn relatively uncomfortable, the neck hanging type Bluetooth headset is inconvenient to store, the neck hanging type Bluetooth headset has the advantages that the neck hanging type Bluetooth headset is made of hard plastic, the designable space is wider, the cruising ability is longer, the parts, which are contacted with the skin, of the soft neck ring are worn relatively comfortable, the soft neck ring is stored relatively more conveniently, the rubber coating is only wrapped on the neck ring part, the neck ring part is assembled with the left and right control box part, the designable space is limited, the cruising ability is relatively shorter, the neck hanging type Bluetooth headset is required to have better waterproof performance and sweat resistance performance, no matter the hard neck ring and the soft neck ring are manufactured by the prior neck hanging type earphone, the neck hanging type Bluetooth headset is basically formed by respectively forming all parts in the industry, and then spliced and assembled, and when the soft neck ring is spliced and assembled, the key sealing parts can be bonded by using special treatment agents to achieve the sealing effect, the waterproof effect and the effect can be attenuated when the sealing effect is used for long.
For example, referring to chinese patent CNN201810299581.1, a process for preparing a soft rubber headset headband with wires and wires is disclosed, wherein the wires can be only partially wrapped by soft rubber through two soft rubber injection molding, so that the overall encapsulation of the headset is difficult to realize, and the waterproof and sweat-resistant effects are poor. Furthermore, in this patent, after the first mold core is injection molded once, the first semi-finished product needs to be taken out, the wire and the metal wire are put into the first semi-finished product, then the first semi-finished product is put into the second mold core for secondary injection molding, after the first semi-finished product is taken out, the wire and the metal wire are difficult to be smoothly put into the first semi-finished product, then the first semi-finished product needs to be taken out from the first mold core and then put into the second mold core, deformation of the first semi-finished product and curling of the upper groove of the first semi-finished product are very likely to be caused, the effect of the final manufactured product is poor, and the rubber coating material of this patent is TPU, TPE, PVC or soft rubber material such as EVA which is harder than silica gel, and the neck-hanging experience of the manufactured soft rubber earphone is poor.
Therefore, there is an urgent need for a silica gel injection mold and a silica gel encapsulation method for a neck strap machine that can solve the above problems.
Disclosure of Invention
The invention aims to provide a soft rubber injection mold and a rubber coating method for a neck hanging earphone, which have good rubber coating effect and can be used for directly injecting and coating silica gel outside the neck hanging earphone.
In order to achieve the above purpose, the invention discloses a soft rubber injection mold of a neck hanging machine, which comprises a first soft rubber injection mold, a second soft rubber injection mold and a mold core middle plate, wherein the first soft rubber injection mold comprises a first upper mold and a first lower mold, and a first mold core installation cavity is formed in the first lower mold; the second soft rubber injection molding die comprises a second upper die and a second lower die, and a second die core mounting cavity is formed in the second lower die; at least one mold core middle plate is arranged and can be matched with the first mold core installation cavity and the second mold core installation cavity, and a forming channel which transversely penetrates through and is opened at the upper part is formed on the mold core middle plate; when the mold core middle plate is detachably arranged in the first mold core installation cavity, the first upper mold is matched with the forming channel to form an injection cavity with a semi-annular cross section, and the injection cavity is used for injecting and forming a soft rubber bearing piece for bearing the neck of the earphone; when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second upper mold is matched with the molding channel to form a wire rod injection cavity for wrapping the neck of the earphone.
Preferably, the second soft rubber injection mold is further provided with two soft rubber injection molds, a control end injection cavity communicated with the second mold core installation cavity is formed in the soft rubber injection molds, the control end injection cavity is used for injecting and wrapping the earphone controller insulating shell to form a control end soft rubber sleeve, and the mold core middle plate is detachably installed in the second mold core installation cavity and matched with the second upper mold to form the wire rod injection cavity, and the wire rod injection cavity is communicated with the control end injection cavity in a sealing manner. According to the scheme, the integral encapsulation of the neck hanging earphone can be realized, the integral encapsulation of the wire part of the neck hanging earphone and the end part of the controller is realized, and the waterproof sweat-resistant effect is good.
Specifically, the injection channels of the second soft rubber injection mold are respectively communicated with the two soft rubber injection molds of the rubber shell.
Specifically, the soft rubber injection molding die of the rubber shell comprises a first die, a second die matched with the first die to form a control end injection molding cavity, and an insert which is arranged in the control end injection molding cavity and corresponds to the opening of the insulating shell of the earphone controller.
More specifically, a first wire hole penetrating through the first die and allowing the earphone wire to pass through is formed on the first die, and a second wire hole penetrating through the insert and extending to the first wire hole and communicating with the first wire hole is formed on one of the inserts.
Preferably, the soft rubber is silica gel, and the soft rubber injection mold is an LSR (thermosetting liquid silicone rubber) injection mold.
The invention also discloses a soft rubber encapsulation method of the neck hanging machine, which comprises the following steps:
providing a mold core middle plate, wherein a forming channel which transversely penetrates through and is open at the upper part is formed on the mold core middle plate;
placing the mold core middle plate into a first soft rubber injection mold, and injecting and pressing in the molding channel to form a soft rubber bearing piece which has a semi-annular cross section and can bear the neck of the earphone;
assembling the shaping strips and the earphone wires together to form an encapsulated material;
the earphone wires with the shaping strips connected in the rubber coating materials are arranged in a semi-annular bearing area of the soft rubber bearing piece in the mold core middle plate;
and placing the mold core middle plate provided with the rubber coating material and the soft rubber bearing piece into a second soft rubber injection mold, and injecting soft rubber for one time on the rubber coating material and forming an integrated full soft rubber sleeve after curing and forming, wherein the full soft rubber sleeve comprises the soft rubber bearing piece and a strip rubber coating piece matched with the soft rubber bearing piece to wrap the neck of the earphone.
Preferably, the rubber coating material further comprises two earphone controller insulating shells arranged at two ends of the earphone wire rod, and the full soft rubber sleeve further comprises a control end soft rubber sleeve which is integrally connected with the strip rubber coating piece and the soft rubber bearing piece and wraps the earphone controller insulating shells. According to the scheme, the integral encapsulation of the neck hanging earphone can be realized, the integral encapsulation of the wire part of the neck hanging earphone and the end part of the controller is realized, and the waterproof sweat-resistant effect is good.
Specifically, when the full soft gum cover is injected and pressed, liquid soft gum is injected from the earphone controller insulating shell and encapsulated outside the earphone controller insulating shell, the liquid soft gum gradually flows into the earphone wire from the earphone controller insulating shell, wraps the earphone wire connected with the shaping strip, and is matched and connected with the end face of the soft gum bearing piece.
More specifically, when the full soft rubber sleeve is injected and pressed, the end part of the earphone wire rod is guided out of the soft rubber injection and pressing die through the wire hole.
Preferably, the soft rubber is silica gel, and the soft rubber injection mold is an LSR (thermosetting liquid silicone rubber) injection mold.
Compared with the prior art, the invention sets a mould core middle plate which is detachably inlaid in a plurality of soft rubber injection moulds respectively, takes out the semi-finished product from the mould core middle plate after the soft rubber bearing part (semi-finished product) for bearing the neck of the earphone is formed on the mould core middle plate, takes the mould core middle plate as a bearing plate for multi-time injection encapsulation, directly installs the neck of the earphone in the soft rubber bearing part on the mould core middle plate, and then directly and detachably installs the mould core middle plate in a second soft rubber injection mould for secondary injection encapsulation, so that the semi-finished product does not need to be taken out from the first injection mould independently, and the semi-finished product is prevented from deforming in the transferring process; on the other hand, the mold core middle plate also provides shaping for the earphone neck during installation, and prevents the earphone neck from being uneven or causing deformation of the soft rubber bearing piece during installation; in still another aspect, the mold core middle plate is directly arranged in the second soft rubber injection mold in a aligned manner, so that the mold core middle plate can be aligned relative to the first soft rubber injection mold in position, the alignment is convenient and quick, the alignment effect is good, the alignment molding of soft rubber and a soft rubber bearing piece is ensured during soft rubber injection, the neck of the earphone is completely wrapped, the integral encapsulation effect is good, and in addition, the mold core middle plate is different from the prior art when the neck of the earphone is directly encapsulated, only plastic can be wrapped.
The invention also discloses a soft rubber injection mould for coating the product, which comprises a first soft rubber injection mould, a second soft rubber injection mould and a mould core middle plate, wherein the first soft rubber injection mould comprises a first upper mould and a first lower mould, and a first mould core installation cavity is formed in the first lower mould; the second soft rubber injection molding die comprises a second upper die and a second lower die, and a second die core mounting cavity is formed in the second lower die; at least one mold core plate is arranged and can be matched with the first mold core installation cavity and the second mold core installation cavity, and a forming channel with an open upper part is formed on the mold core plate; when the mold core middle plate is detachably arranged in the first mold core installation cavity, the first upper mold is matched with the molding channel to form at least one first injection cavity with a semi-annular cross section, and the first injection cavity is used for injection molding to form a semi-wrapped soft rubber bearing piece for bearing a first part of a product; when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second upper mold is matched with the molding channel to form a second injection cavity for wrapping the first part of the product.
Preferably, the second soft rubber injection mold further comprises a sub soft rubber injection mold with a third injection cavity, the product comprises a first part and a second part which are connected together, and the sub soft rubber injection mold is used for wrapping and injecting a soft rubber sleeve on the second part of the product; when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second injection cavity is communicated with the third injection cavity of the soft rubber injection mold in a sealing mode.
Preferably, the first portion of the product is a flexible strip.
Drawings
Fig. 1 is a structural view of a first soft rubber injection mold according to the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a structural view of the mold core of the present invention in which a middle plate is mounted on a first lower mold.
Fig. 4 is a structural view of a first upper die of the present invention.
Fig. 5 is an exploded view of the core plate and the flexible glue carrier of the present invention. A step of
Fig. 6 is a structural view of the mold core of the present invention in which a plate is mounted on a second lower mold.
Fig. 7 is a structural view of a second upper die of the present invention.
Fig. 8 is a partial construction view of a second lower die of the present invention.
FIG. 9 is a partially exploded view of the core plate of the present invention mounted to a second lower mold.
Fig. 10 is a structural view of a second soft rubber injection mold of the present invention.
Fig. 11 is an enlarged view of a portion B in fig. 10.
Fig. 12 is a block diagram of an encapsulated material of the present invention.
Figure 13 is a block diagram of the neck strap of the present invention after encapsulation is completed.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
Referring to fig. 1 and 10, the invention discloses a soft rubber injection mold for a neck hanging machine, which comprises a first soft rubber injection mold 10, a second soft rubber injection mold 20 and a mold core middle plate 30.
Referring to fig. 1, a first soft rubber injection mold 10 includes a first upper mold 11, a first lower mold 12, a first mold core installation cavity 121 formed in the first lower mold 12, and an injection passage into which liquid soft rubber is injected; the second soft rubber injection molding die 20 includes a second upper die 21, a second lower die 22, and a second core mounting cavity 221 is formed in the second lower die 22.
Referring to fig. 3 to 5, at least one mold core middle plate 30 is provided and is fittingly installed with the first mold core installation cavity 121 and the second mold core installation cavity 221, and a molding passage 31 which is laterally penetrated and has an open upper portion is formed in the mold core middle plate 30. In this embodiment, the forming channel 31 is in a transverse arc shape, which corresponds to the shape of the neck hanging portion of the neck hanging machine, however, the forming channel 31 may be in other shapes, such as a straight strip shape, and an arc shape is preferred.
Referring to fig. 2, 3 and 5, when the mold core middle plate 30 is detachably mounted in the first mold core mounting cavity 121, the first upper mold 11 cooperates with the molding channel 31 to form a first injection cavity 311 with a semi-annular cross section, and is used for injection molding to form the soft rubber carrier 41 for carrying the neck of the earphone.
Referring to fig. 3, a first mold core installation cavity 121 is provided on the first lower mold 12, and the mold core middle plate 30 is detachably installed in the first mold core installation cavity 121, and can be placed in the first mold core installation cavity 121 or taken out of the first mold core installation cavity 121 through two pull rods 302. Referring to fig. 4, the first upper mold 11 is provided with a positioning cavity 112, a protrusion 111 matching with the forming channel 31 is protruding in the positioning cavity 112, and a boss 301 matching with the positioning cavity 112 is formed on the mold core middle plate 30. Referring to fig. 2, the protruding strip 111 cooperates with the forming channel 31 to form a first injection cavity 311 having a semi-annular cross section.
In this embodiment, the upper surface of the protruding strip 111 is a smooth upper surface, and the first injection cavity 311 formed is a strip-shaped cavity that is penetrated transversely, however, in another embodiment, a plurality of protrusions that can contact the bottom wall of the forming channel 31 may be further disposed on the protruding strip 111 at a certain interval, and when the first upper mold 11 is pressed onto the first lower mold 12, the protruding strip 111 and the forming channel 31 cooperate to form a plurality of intermittent first injection cavities 311 with a semi-annular cross section, and the first injection cavities 311 may be strip-shaped or dot-shaped.
In this embodiment, the cross section of the molding channel 31 is a semicircular groove, the cross section of the protruding strip 111 is a semicircular protrusion, and the cross section of the first injection cavity 311 formed by matching the protruding strip 111 with the molding channel 31 is a semicircular ring. Not limited to this embodiment, the cross section of the molding channel 31 may be square grooves, semi-elliptical grooves, semi-star grooves, or even other irregular grooves, and the cross section of the raised strips 111 may be other protrusions, such as triangular protrusions, trapezoidal protrusions, etc., so long as the raised strips 111 do not contact the inner surface of the molding channel 31, so that the final soft rubber carrier 41 is a carrier having a carrier area 411 that can semi-wrap the encapsulated portion (as shown in fig. 5).
When the soft rubber injection of the neck hanging machine is performed, the mold core middle plate 30 is firstly put into the first soft rubber injection mold 10, the first upper mold 11 is pressed down, the liquid soft rubber is injected into the first injection cavity 311, a soft rubber bearing piece 41 (shown in fig. 5) with a semi-annular cross section and capable of bearing the neck of the earphone is formed after solidification, and the soft rubber bearing piece 41 is always put into the mold core middle plate 30. The molding strip 42 and the earphone wire 43 are assembled together and put into the soft rubber carrier 41 to form the encapsulation material 40. The entire core middle plate 30 with the encapsulated material 40 placed therein is then placed into the second core mounting cavity 221.
In this embodiment, the positioning strip 42 comprises nickel-titanium memory steel wire, but the shaping strip may comprise other memory metal or other shapable materials. When the shaping strip 42 and the earphone wire 43 are assembled, the size of the nickel-titanium memory steel wire is detected and controlled by using the jig to obtain the nickel-titanium memory steel wire with the length and shape meeting the requirements, then the nickel-titanium memory steel wire is put into a die to wrap hard glue on two ends of the nickel-titanium memory steel wire for shaping, the shaping strip 42 with the shape meeting the regulations is formed, and the shaping strip 42 is detected and controlled in size by using the jig. Then, the earphone wire 43 is placed into a dispensing jig, a dispensing machine is used for dispensing on the surface of the earphone wire 43 (core wire), and after dispensing is finished, the shaping strip 42 is placed above the earphone wire 43, so that the earphone wire 43 and the positioning strip 42 are fixed together through glue. Of course, the fixing manner of the earphone wire 43 and the positioning strip 42 is not limited to the dispensing fixing. In another embodiment, the earphone wire 43 and the positioning strip 42 are not separately fixed, and the earphone wire and the positioning strip are directly and unfixed into the hollow area of the soft rubber carrier 41.
Referring to fig. 6, 10 and 11, when the mold core middle plate 30 is detachably mounted in the second mold core mounting cavity 221, the second upper mold 21 cooperates with the molding channel 31 to form a wire injection cavity 312 that wraps around the earphone neck (position of the earphone wire 43).
Referring to fig. 6, a second mold core mounting cavity 221 is provided on the second lower mold 22, and a mold core middle plate 30 is detachably mounted in the second mold core mounting cavity 221, and can be placed in the second mold core mounting cavity 221 or taken out of the second mold core mounting cavity 221 by two tie rods 302. Referring to fig. 7, the second upper mold 21 is provided with a positioning cavity 211, the positioning cavity 211 is concavely provided with a groove 212 matching with the forming channel 31, and the mold core middle plate 30 is formed with a boss 301 matching with the positioning cavity 211 in a positioning manner. Referring to fig. 2, the recess 212 cooperates with the molding channel 31 to form a wire injection cavity 312 having a cross-section that wraps around the neck of the earphone.
In this embodiment, the cross section of the forming channel 31 is a semicircular groove, the cross section of the groove 212 is semicircular, and of course, the cross section of the forming channel 31 is not limited to this, and may be a square groove, a semi-elliptical groove, a semi-star groove or even other irregular grooves, and the cross section of the groove 212 is a shape matching with the cross section of the forming channel 31 to form a wire encapsulation with a square, elliptical, star-shaped, trapezoid-shaped cross section, etc.
When the soft rubber is injected into the second soft rubber injection molding die 20, the mold core middle plate 30 with the rubber material 40 and the soft rubber bearing piece 41 placed therein is placed into the second mold core mounting cavity 221, the second upper mold 12 is pressed down, the liquid soft rubber is injected into the wire injection molding cavity 312, and a soft rubber sleeve for wrapping the neck of the earphone is formed after curing.
Preferably, referring to fig. 9a, two soft rubber injection molds 23 are further provided in the second soft rubber injection mold 20, a control end injection cavity 231 that is communicated with the second mold core mounting cavity 221 is formed in the soft rubber injection mold 23, and is used for injection molding an insulating shell of the earphone controller to form a control end soft rubber sleeve, and when the mold core middle plate 30 is detachably installed in the second mold core mounting cavity 221 and cooperates with the second upper mold 21 to form the wire rod injection cavity 312, the wire rod injection cavity 312 is in sealing communication with the control end injection cavity 231. In order to realize the sealing communication between the wire rod injection cavity 312 and the control end injection cavity 231, the second lower mold 22 forms a communication channel 222 between the second mold core mounting cavity 221 and the control end injection cavity 231, and the communication channel 222 is in sealing connection with the wire rod injection cavity 312 and in sealing connection with the control end injection cavity 231.
According to the scheme, the integral encapsulation of the neck hanging earphone can be realized, the integral encapsulation of the wire part of the neck hanging earphone and the end part of the controller is realized, and the waterproof sweat-resistant effect is good. The injection channels of the second soft rubber injection mold 20 are respectively connected to the two soft rubber injection molds 23.
Based on this embodiment, referring to fig. 12, when the encapsulation material 40 is manufactured in the previous step, the two earphone controller insulating cases 44 at the two ends of the left and right earphone wires are also fixedly combined with the earphone wire 43 and the shaping member 42 by using pins, and then the earphone wire 43 and the shaping member 42 (earphone neck) to which the earphone controller insulating case 44 is mounted are mounted in the soft rubber carrier 41, so that the encapsulation material 40 further includes the earphone controller insulating case 44.
When the soft rubber injection molding is performed in the second soft rubber injection molding die 20, the earphone controller insulating case 44 is further installed in the second soft rubber injection molding die 20, and then the second soft rubber injection molding is performed, referring to fig. 13, and finally, a soft rubber sleeve 51 is formed to fully cover the whole earphone wire 43, the shaping member 42 and the earphone controller insulating case 44, so as to form the neck hanging machine 50 after encapsulation. The full soft rubber sleeve 51 comprises a strip rubber coating part which is integrally connected and wraps the neck of the neck hanging earphone 50, and a control end soft rubber sleeve which wraps the insulating shell of the earphone controller.
Referring to fig. 6 and 7, the soft rubber injection mold 23 includes a first mold 232, a second mold 233 cooperating with the first mold 232 to form a control end injection cavity 231, and inserts 234, 235, 236 installed in the control end injection cavity 231 and corresponding to the opening of the insulating shell of the earphone controller.
Referring to fig. 9b, a first wire hole 2321 is formed in the first mold 232, through which the earphone wire passes, and a second wire hole 2341 is formed in one of the inserts 234, which passes through the insert 234, extends to the first wire hole 2321, and is in communication with the first wire hole.
In this embodiment, the soft rubber is silica gel, and the soft rubber injection molds 10 and 20 are LSR (thermosetting liquid silicone rubber) injection molds. Of course, the soft rubber can be other types of soft rubber, and is not limited to silica gel, and the soft rubber injection mold can be other types of injection molds.
The invention also discloses a soft rubber encapsulation method of the neck hanging machine, which comprises the following steps:
step one, providing a mold core middle plate 30, wherein a forming channel 31 which transversely penetrates through and is opened at the upper part is formed on the mold core middle plate 30;
step two, the mold core middle plate 30 is put into a first soft rubber injection mold 10, and a soft rubber bearing piece 41 with a semi-annular cross section and capable of bearing the neck of the earphone is formed in the molding channel 31 by injection molding;
step three, assembling the shaping strips and the earphone wires together to form an encapsulated material;
step four, the earphone wires with the shaping strips connected in the rubber coating material are arranged in the semi-annular bearing area of the soft rubber bearing piece 41 in the mold core middle plate 30;
and fifthly, placing the mold core middle plate 30 with the rubber coating material and the soft rubber bearing piece 41 into a second soft rubber injection molding die 20, and injecting soft rubber on the rubber coating material once and curing and molding to form an integrated full soft rubber sleeve, wherein the full soft rubber sleeve comprises the soft rubber bearing piece 41 and a strip rubber coating piece matched with the soft rubber bearing piece 41 to wrap the neck part of the earphone (the position of the earphone wire 43).
In the third step, the rubber material further comprises two earphone controller insulating shells arranged at two ends of the earphone wire rod, so that the earphone controller insulating shells are fixed at two ends of the earphone wire rod. In the fifth step, the soft rubber sleeve further comprises a control end soft rubber sleeve integrally connected with the strip-shaped rubber coating piece and the soft rubber bearing piece 41 and wrapping the insulating shell of the earphone controller.
Specifically, when the full soft rubber sleeve is injected and pressed, the liquid soft rubber is injected from the earphone controller insulating shell and encapsulated outside the earphone controller insulating shell, and the liquid soft rubber gradually flows into the earphone wire from the earphone controller insulating shell, wraps the earphone wire connected with the shaping strip, and is matched and connected with the end face of the soft rubber bearing piece 41.
More specifically, the second soft rubber injection mold 20 includes a soft rubber injection mold 23 for injecting a soft rubber sleeve at the control end, and the end of the earphone wire is guided to the outside of the soft rubber injection mold 23 through the wire hole when the soft rubber sleeve is injected.
In this embodiment, the soft rubber is silica gel, and the soft rubber injection molds 10 and 20 are LSR (thermosetting liquid silicone rubber) injection molds. Of course, the soft rubber can be other types of soft rubber, and is not limited to silica gel, and the soft rubber injection mold can be other types of injection molds.
The invention also discloses a method for injecting and pressing the soft rubber sleeve of the neck hanging earphone by using the soft rubber injection and pressing mold of the neck hanging earphone, which comprises the following steps:
placing the mold core middle plate 30 into the first mold core mounting cavity 121, pressing down the first upper mold 11 onto the first lower mold 12 for mold clamping, injecting soft rubber into the semi-annular injection cavity, curing to form a soft rubber bearing piece 41 with a semi-annular cross section and capable of bearing the neck of the earphone, opening the mold, taking out the mold core middle plate 30, and bearing the soft rubber bearing piece 41 on the mold core middle plate 30;
assembling the shaping strip and the earphone wire together, and respectively assembling the two earphone controller insulating shells to two ends of the earphone wire to form an encapsulation material;
the earphone wires with the shaping strips connected in the rubber coating materials are arranged in the mould core middle plate 30, and the semi-annular bearing area of the soft rubber bearing piece 41 is provided;
the mold core middle plate 30 is put into the second soft rubber injection mold 20, two earphone controllers are respectively installed in the two soft rubber injection molds 23 of the rubber shell, the second upper mold 21 is pressed down to the second lower mold 22 to be closed, liquid soft rubber is injected into the soft rubber injection mold 23 of the rubber shell and the wire injection cavity 312, and after solidification, an integrated full soft rubber sleeve is formed, wherein the full soft rubber sleeve comprises a soft rubber bearing part 41, a strip rubber coating part matched with the soft rubber bearing part 41 to wrap the earphone neck, and a control end soft rubber sleeve integrally connected with the strip rubber coating part and the soft rubber bearing part 41.
Referring to fig. 1 to 11, the present invention further discloses a soft rubber injection mold for coating a product, which comprises a first soft rubber injection mold 10, a second soft rubber injection mold 20, and a mold core middle plate 30, wherein the first soft rubber injection mold 10 comprises a first upper mold 11, a first lower mold 12, and a first mold core installation cavity 121 formed in the first lower mold 12; the second soft rubber injection mold 20 includes a second upper mold 21, a second lower mold 22, and a second core mounting cavity 221 formed in the second lower mold 22; at least one mold core middle plate 30 is provided and can be matched with the first mold core installation cavity 121 and the second mold core installation cavity 221, and a forming channel 31 with an open upper part is formed on the mold core middle plate 30; when the mold core middle plate 30 is detachably mounted in the first mold core mounting cavity 121, the first upper mold 11 cooperates with the molding channel 31 to form at least one first injection cavity 311 with a semi-annular cross section, for injection molding to form a soft rubber carrier 41 that is semi-wrapped and carries a first part of the product; when the mold core middle plate 30 is detachably mounted in the second mold core mounting cavity 221, the second upper mold 21 cooperates with the molding channel 31 to form a second injection cavity for wrapping the first part of the product. In this embodiment, the encapsulated product is not limited to the neck-hanging earphone, but may be other products.
Preferably, the second soft rubber injection mold 20 further comprises a sub soft rubber injection mold having a third injection cavity, the product comprises a first part and a second part connected together, and the sub soft rubber injection mold is used for wrapping and injecting a soft rubber sleeve on the second part of the product; when the mold core middle plate 30 is detachably mounted in the second mold core mounting cavity 221, the second injection cavity is in sealing communication with the third injection cavity of the soft rubber injection mold.
In this embodiment, the first portion of the product is a flexible strip, although the shape of the first portion is not limited thereto.
The invention also discloses a soft rubber encapsulation method for the coated product, which comprises the following steps:
(1) Providing a mold core middle plate 30, wherein a molding channel 31 with an open upper part is formed on the mold core middle plate 30;
(2) Placing the mold core middle plate 30 into a first soft rubber injection mold 10, and injecting and pressing in the molding channel 31 to form a soft rubber bearing piece 41 with a bearing area as a cross section;
(3) Placing the first portion of the product in the soft gel carrier 41 of the forming tunnel 31 such that the soft gel carrier 41 locates the first portion of the product;
(4) The product is placed in the second soft rubber injection mold 20, and the first part of the product is fully coated with the rest of the soft rubber bearing piece 41 to form a soft rubber sleeve.
Preferably, the product comprises a first part and a second part connected together, the second soft rubber injection mold 20 is further provided with an injection cavity matched with the second part, when the product is put into the second soft rubber injection mold 20, the second part of the product is also placed in the injection cavity, and when the product is injected, the first part of the product is fully coated, and meanwhile, the second part of the product is coated with the first part in an integrally connected manner, so that the fully soft rubber sleeve is formed.
The invention also discloses a soft rubber encapsulation method for the fully-encapsulated product, which uses the soft rubber injection molding die for the encapsulated product to carry out soft rubber injection molding, and comprises the following steps:
(1) Placing the mold core middle plate 30 into the first mold core mounting cavity 121, pressing down the first upper mold 11 onto the first lower mold 12 to perform mold clamping, injecting soft rubber into the first injection cavity 311 and curing to form a soft rubber bearing piece 41, opening the mold to take out the mold core middle plate 30, and loading the soft rubber bearing piece 41 on the mold core middle plate 30;
(2) Installing a first portion of the product in a load bearing area of the flexible glue carrier 41;
(3) And placing the mold core middle plate 30 into the second soft rubber injection mold 20, placing the second part of the product into the sub soft rubber injection mold, pressing down the second upper mold 21 onto the second lower mold 22 for closing the mold, injecting liquid soft rubber into the second injection cavity and the third injection cavity, and curing to form a soft rubber sleeve integrally wrapping the first part and the second part of the product.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (10)
1. A neck hangers machine soft glue injection mold which characterized in that: comprising the following steps:
the first soft rubber injection mold comprises a first upper mold and a first lower mold, wherein a first mold core mounting cavity is formed in the first lower mold;
the second soft rubber injection mold comprises a second upper mold and a second lower mold, and a second mold core mounting cavity is formed in the second lower mold;
at least one mold core middle plate which can be matched with the first mold core installation cavity and the second mold core installation cavity, wherein a forming channel which transversely penetrates through and is opened at the upper part is formed on the mold core middle plate;
when the mold core middle plate is detachably arranged in the first mold core installation cavity, the first upper mold is matched with the forming channel to form an injection cavity with a semi-annular cross section, and the injection cavity is used for injecting and forming a soft rubber bearing piece for bearing the neck of the earphone;
when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second upper mold is matched with the molding channel to form a wire rod injection cavity for wrapping the neck of the earphone.
2. The soft rubber injection mold of the neck hanging earphone of claim 1, wherein: the soft plastic injection mould of second still is equipped with two soft plastic injection moulds of plastic shell, be formed with in the soft plastic injection mould of plastic shell with the control end injection cavity of second mold core installation cavity intercommunication for the injection parcel earphone controller insulating shell is in order to form the soft gum cover of control end, the mold core medium plate demountable installation in the second mold core installation cavity and with the cooperation of second goes up the mould forms when the wire rod injection cavity, the wire rod injection cavity with the sealed intercommunication of control end injection cavity.
3. The neck strap machine soft rubber injection mold of claim 2, wherein: the injection channels of the second soft rubber injection mold are respectively communicated with the two soft rubber injection molds of the rubber shell;
the soft rubber injection molding die of the rubber shell comprises a first die, a second die and an insert, wherein the second die is matched with the first die to form a control end injection molding cavity, and the insert is arranged in the control end injection molding cavity and corresponds to an opening of the insulating shell of the earphone controller;
the first die is provided with a first wire hole penetrating through and allowing the earphone wire to pass through, wherein one insert is provided with a second wire hole penetrating through the insert and extending to the first wire hole and communicated with the first wire hole.
4. The soft rubber injection mold of the neck hanging earphone of claim 1, wherein: the soft rubber is silica gel, and the soft rubber injection mold is an LSR injection mold.
5. A soft rubber encapsulation method for a neck hanger is characterized by comprising the following steps of: comprising the following steps:
providing a mold core middle plate, wherein a forming channel which transversely penetrates through and is open at the upper part is formed on the mold core middle plate;
placing the mold core middle plate into a first soft rubber injection mold, and injecting and pressing in the molding channel to form a soft rubber bearing piece which has a semi-annular cross section and can bear the neck of the earphone;
assembling the shaping strips and the earphone wires together to form an encapsulated material;
the earphone wires with the shaping strips connected in the rubber coating materials are arranged in a semi-annular bearing area of the soft rubber bearing piece in the mold core middle plate;
and placing the mold core middle plate provided with the rubber coating material and the soft rubber bearing piece into a second soft rubber injection mold, and injecting soft rubber for one time on the rubber coating material and forming an integrated full soft rubber sleeve after curing and forming, wherein the full soft rubber sleeve comprises the soft rubber bearing piece and a strip rubber coating piece matched with the soft rubber bearing piece to wrap the neck of the earphone.
6. The method for encapsulating the soft rubber of the neck hanging machine as claimed in claim 5, wherein the method comprises the following steps: the rubber coating material is characterized by further comprising two earphone controller insulating shells arranged at two ends of the earphone wire rod, and the full-soft rubber sleeve is further connected with the strip rubber coating piece and the soft rubber bearing piece in an integrated manner and wraps the control end soft rubber sleeve of the earphone controller insulating shells.
7. The method for encapsulating the soft rubber of the neck hanging machine as claimed in claim 6, wherein the method comprises the following steps: when the full soft rubber sleeve is injected and pressed, liquid soft rubber is injected from the earphone controller insulating shell and encapsulated outside the earphone controller insulating shell, and the liquid soft rubber gradually flows into the earphone neck from the earphone controller insulating shell to wrap an earphone wire connected with a shaping strip and is matched and connected with the end face of the soft rubber bearing piece;
when the full soft rubber sleeve is injected and pressed, the end part of the earphone wire rod is guided to the outside of the soft rubber injection and pressing die through the wire hole.
8. The method for encapsulating the soft rubber of the neck hanging machine as claimed in claim 5, wherein the method comprises the following steps: the soft rubber is silica gel, and the soft rubber injection mold is an LSR injection mold.
9. A soft glue injection mold for coating products is characterized in that: comprising the following steps:
the first soft rubber injection mold comprises a first upper mold and a first lower mold, and a first mold core mounting cavity is formed in the first lower mold;
the second soft rubber injection mold comprises a second upper mold and a second lower mold, and a second mold core mounting cavity is formed in the second lower mold;
at least one mold core middle plate which can be matched with the first mold core installation cavity and the second mold core installation cavity, wherein a forming channel with an open upper part is formed on the mold core middle plate;
when the mold core middle plate is detachably arranged in the first mold core installation cavity, the first upper mold is matched with the molding channel to form at least one first injection cavity with a semi-annular cross section, and the first injection cavity is used for injection molding to form a semi-wrapped soft rubber bearing piece for bearing a first part of a product;
when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second upper mold is matched with the molding channel to form a second injection cavity for wrapping the first part of the product.
10. The soft gel injection mold of claim 9, wherein: the second soft rubber injection mold further comprises a sub soft rubber injection mold with a third injection cavity, the product comprises a first part and a second part which are connected together, and the sub soft rubber injection mold is used for wrapping and injecting a soft rubber sleeve on the second part of the product; when the mold core middle plate is detachably arranged in the second mold core installation cavity, the second injection cavity is communicated with the third injection cavity of the soft rubber injection mold in a sealing mode.
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