CN114683491A - Internal mold and injection mold with same - Google Patents
Internal mold and injection mold with same Download PDFInfo
- Publication number
- CN114683491A CN114683491A CN202011588980.3A CN202011588980A CN114683491A CN 114683491 A CN114683491 A CN 114683491A CN 202011588980 A CN202011588980 A CN 202011588980A CN 114683491 A CN114683491 A CN 114683491A
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- flow channel
- runner
- mold
- injection
- groove
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- 238000002347 injection Methods 0.000 title claims abstract description 104
- 239000007924 injection Substances 0.000 title claims abstract description 104
- 229920003023 plastic Polymers 0.000 claims abstract description 69
- 239000004033 plastic Substances 0.000 claims abstract description 69
- 238000001746 injection moulding Methods 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims description 35
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000004308 accommodation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
An internal mold, comprising: the injection molding device comprises a first mold core, a second mold core and a runner block, wherein the first mold core is provided with a first accommodating groove, the second mold core is detachably arranged on one side of the first mold core, the second mold core comprises a first surface and a second surface opposite to the first surface, the first surface is inwards sunken to form a second accommodating groove and a first runner communicated with the second accommodating groove, the second accommodating groove is communicated with the first accommodating groove to form a product injection molding cavity, the runner block is movably arranged in the second mold core or connected to the first mold core, the runner block is provided with a second runner, the first runner and the second runner are matched to form an injection molding runner, and the injection molding runner is used for injecting plastic into the product injection molding cavity. The invention also provides an injection mold, which can shorten the ejection stroke and ejection force of the plastic in the injection runner. In addition, the invention also provides an injection mold with the inner mold.
Description
Technical Field
The invention relates to an inner mold and an injection mold with the same.
Background
Injection molds have become popular in the manufacturing industry for forming plastic into plastic products. The injection mold may inject plastic into the product cavity between the male and female mold plates. And when the plastic is cooled, forming a plastic product in the product cavity. At this time, the injection mold can drive an ejector pin mechanism to separate the plastic product from the male mold plate, so that the plastic product can be taken out of the injection mold.
Generally, in order to ensure the complete appearance of a plastic product, a horn insert is required to be used for adopting a hidden type glue feeding, glue remained in the horn insert and the product are ejected by the ejector pin mechanism, however, the ejection stroke required by the horn insert is large, and the bonding force between the plastic in the horn insert and the horn insert is too large, so that the plastic can be ejected by a large ejection force.
Disclosure of Invention
In view of the above, the present invention provides an inner mold, which can shorten the ejection stroke and ejection force of the plastic in the horn insert.
In addition, the invention also provides an injection mold with the inner mold.
An internal mold, comprising: the first mold core is provided with a first accommodating groove. The second mold core is detachably arranged on one side of the first mold core and comprises a first surface and a second surface opposite to the first surface, the first surface is inwards sunken to form a second accommodating groove and a first flow channel communicated with the second accommodating groove, and the second accommodating groove is communicated with the first accommodating groove to form a product injection molding cavity. The runner block is movably arranged in the second mold core or connected to the first mold core and provided with a second runner, the first runner and the second runner are matched to form an injection molding runner, and the injection molding runner is used for injecting plastic into the product injection molding cavity.
Furthermore, the runner block is fixedly connected to one side of the first die core, which faces the second die core. The first flow channel comprises a feeding flow channel and a discharging flow channel opposite to the feeding flow channel, the discharging flow channel is arranged below the first surface, and the discharging flow channel is communicated with the second accommodating groove. The first surface corresponding to the feeding flow channel is inwards recessed to form a first groove, and the feeding flow channel is exposed at the bottom of the first groove. The runner block can be accommodated in the first groove, and the second runner is connected with the discharging runner.
Furthermore, the runner block is movably arranged in the second die core. The second mold core is provided with a first through hole which penetrates through the first surface and the second surface. The first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which deviates from the connecting flow channel, is exposed out of the first surface, the first surface corresponding to the connecting flow channel is inwards sunken to form a second groove, and the connecting flow channel is exposed out of the bottom of the second groove. The runner block comprises a main body part and a convex block, the convex block is arranged at one end of the main body part, the main body part is movably arranged in the first through hole, the convex block can be contained in the second groove, and the second runner is communicated with the connecting runner.
Furthermore, the runner block is movably arranged in the second die core. The second mold core is provided with a third groove, and the second surface is inwards sunken to form the third groove. The first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which is deviated from the connecting flow channel, is exposed out of the first surface, and the connecting flow channel is communicated with the bottom of the third groove. The runner block comprises a first end part and a second end part opposite to the first end part, the second end part is movably arranged in the third groove, and the second runner is communicated with the connecting runner.
Furthermore, the runner block is movably arranged in the second die core. The second die core further comprises a plurality of connecting side surfaces, the connecting side surfaces are connected between the first surface and the second surface, the second die core is provided with a fourth groove, and the connecting side surfaces are inwards recessed to form the fourth groove. The first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which is far away from the connecting flow channel, is exposed out of the first surface, and the connecting flow channel is communicated with the bottom of the fourth groove. The runner block comprises a third end part and a fourth end part opposite to the third end part, the fourth end part is movably arranged in the fourth groove, and the second runner is communicated with the connecting runner.
Furthermore, the injection molding runner is horn-shaped, and the cross-sectional area of the injection molding runner decreases progressively from the feeding runner to the discharging runner.
An injection mold is used for forming a plastic product and comprises a female mold, a male mold, a thimble mechanism and the inner mold, wherein the first mold core is accommodated in the female mold, the second mold core is accommodated in the male mold, the thimble mechanism comprises a thimble and a thimble driving piece, the thimble penetrates through the male mold and the second mold core, and the thimble driving piece is used for driving the thimble to eject the plastic product and the plastic in an injection flow channel.
Furthermore, the injection mold further comprises an upper fixing plate and a lower fixing plate, the upper fixing plate is connected to one side of the female mold departing from the male mold, and the lower fixing plate is connected to one side of the male mold departing from the female mold.
The injection pipeline comprises an injection joint and a hot nozzle communicated with the injection joint, the injection joint is arranged on one side of the upper fixed plate, one end of the hot nozzle penetrates through the upper fixed plate and is communicated with the injection joint, the other end of the hot nozzle penetrates through the female die, the first die core and is communicated with the feeding runner, the injection joint is used for connecting an injection device, the injection device provides plastic to the injection joint, and the plastic enters the injection runner through the injection joint and the hot nozzle.
Further, the mould still includes a removable pin, removable pin movably runs through the upper fixed plate, the master model reaches public mould, the removable pin avoids the product mould plastics the cavity and the runner of moulding plastics.
In summary, in the injection mold of the present invention, through the cooperation between the first runner and the second runner, after the first mold core and the second mold core are separated, part of the plastic in the injection runner is exposed, so as to reduce the formation of the ejector pin, and simultaneously, part of the plastic in the injection runner is exposed, so as to reduce the driving force for driving the ejector pin to move.
Drawings
Fig. 1 is an overall schematic view of an injection mold according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of opening of the injection mold shown in fig. 1.
Fig. 3 is an overall schematic view of an injection mold according to a second embodiment of the present invention.
Fig. 4 is a schematic opening view of the injection mold shown in fig. 3.
Fig. 5 is an overall schematic view of an injection mold according to a third embodiment of the present invention.
Fig. 6 is a schematic opening view of the injection mold shown in fig. 5.
Fig. 7 is an overall schematic view of an injection mold according to a fourth embodiment of the present invention.
Fig. 8A is a cross-sectional view of the vicinity of the injection runner perpendicular to the paper surface when the injection mold shown in fig. 7 is closed.
Fig. 8B is a cross-sectional view of the injection mold shown in fig. 7 taken perpendicular to the paper near the injection runner when the mold is opened.
Description of the main elements
Male die 3
The first accommodation slot 411
Second receiving groove 423
Connecting flow passage 4243
First through hole 425
First flow path block 43
Product injection molding cavity 44
Third flow channel block 47
Lower fixing plate 7
Material injection pipeline 8
Material injection joint 81
Plastic product P
Direction of movement D
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding and appreciation of the invention by those skilled in the art, the following detailed description of the invention in connection with the accompanying drawings and examples should be understood as providing many applicable inventive concepts which can be embodied in a wide variety of specific forms. The specific embodiments illustrated and discussed herein are merely illustrative of specific ways to make and use the invention, and do not delimit the scope of the present invention. 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.
Moreover, repeated reference numerals or designations may be used in various embodiments. These iterations are merely for simplicity and clarity of describing the present invention, and are not intended to represent any relationship between the various embodiments and/or structures discussed. It will 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 an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 2, a first embodiment of the invention provides an injection mold 100, the injection mold 100 is used for molding plastic into a plastic product P, and in some embodiments, the injection mold 100 may be a flip-chip injection mold, but is not limited thereto. The injection mold 100 includes a female mold 2, a male mold 3, an inner mold 4, and an ejector pin mechanism 5. The female die 2, the male die 3 and the inner die 4 can be sequentially arranged along a moving direction D and can respectively extend perpendicular to the moving direction D, the thimble mechanism 5 comprises a thimble 51 and a thimble driving member 52, the thimble 51 penetrates through the male die 3 along the moving direction D and extends into the inner die 4, and the thimble driving member 52 is used for driving the thimble 51 to eject the plastic product P in the inner die 4. In this embodiment, the moving direction D may be a vertical direction, and in other embodiments of the present invention, the moving direction D may be a horizontal direction.
In this embodiment, the injection mold 100 further includes an upper fixing plate 6 and a lower fixing plate 7, the upper fixing plate 6 is disposed on one side of the female mold 2 departing from the male mold 3, the lower fixing plate 7 is fixed on one side of the male mold 3 departing from the female mold 2, and the upper fixing plate 6, the female mold 2, the inner mold 4 and the lower fixing plate 7 may be of a rectangular parallelepiped or plate-shaped structure. The upper fixing plate 6, the female die 2, the inner die 4, and the lower fixing plate 7 have the same or substantially the same height or width. Wherein the height and the width are measured perpendicular to the direction of movement D. In the present embodiment, the two are substantially the same, which is defined as the two are identical or the error between the two is within a tolerance range of ± 10%, and the upper fixing plate 6, the female die 2, the inner die 4 and the lower fixing plate 7 may be made of a metal material, such as steel.
In this embodiment, the inner mold 4 has a product injection molding cavity 44, the inner mold 4 includes a first mold core 41, a second mold core 42 and a first runner block 43 (see fig. 2), and the first mold core 41 has a first receiving groove 411.
The second mold core 42 is detachably disposed at one side of the first mold core 41, the second mold core 42 includes a first surface 421 and a second surface 422 opposite to the first surface 421, the first surface 421 is recessed inward to form a second receiving groove 423 and a first flow channel 424 communicated with the second receiving groove 423, the second receiving groove 423 is communicated with the first receiving groove 411 to form a product injection molding cavity 44, and the product injection molding cavity 44 is used for receiving plastic to form the plastic product P.
The first runner block 43 has a second runner 431, the first runner block 43 is disposed on one side of the first mold core 41 facing the second mold core 42, the first runner 424 and the second runner 431 are matched to form an injection molding runner 45, and the injection molding runner 45 is used for injecting plastic into the product injection molding cavity 44. Through the cooperation of the first flow channel 424 and the second flow channel 431, after the first mold core 41 is separated from the second mold core 42, part of the plastic in the injection molding flow channel 45 is exposed, so that the ejection stroke of the ejector pin 51 is reduced, and meanwhile, part of the plastic in the injection molding flow channel 45 is exposed, so that the driving force for driving the ejector pin 51 to move can be reduced, and it can be understood that compared with the case that the plastic is completely located in the injection molding flow channel 45, the contact area between the plastic and the injection molding flow channel 45 can be reduced by exposing part of the plastic, so that the friction between the plastic and the injection molding flow channel 45 is reduced, and the ejector pin 51 is convenient to eject.
In this embodiment, the first flow passage 424 includes a feeding flow passage 4241 and a discharging flow passage 4242 opposite to the feeding flow passage 4241, the discharging flow passage 4242 is disposed below the first surface 421, and the discharging flow passage 4242 is communicated with the second accommodation groove 423. The first surface 421 corresponding to the feeding flow passage 4241 is recessed inwards to form a first groove 4211, and the feeding flow passage 4241 is exposed at the bottom of the first groove 4211. The first flow passage block 43 can be accommodated in the first groove 4211, and the second flow passage 431 is communicated with the discharge flow passage 4242. The injection molding runner 45 is shaped like a horn, and the cross-sectional area of the injection molding runner 45 decreases from the feeding runner 4241 to the discharging runner 4242.
In this embodiment, the injection mold 200 further includes an injection pipeline 8, the injection pipeline 8 includes an injection joint 81 and a hot nozzle 83 communicated with the injection joint 81, the injection joint 81 is disposed at one side of the upper fixing plate 6, one end of the hot nozzle 83 penetrates through the upper fixing plate 6 and is communicated with the injection joint 81, and the other end of the hot nozzle 83 penetrates through the female mold 2 and the first mold core 41 and is communicated with the feeding flow passage 4241. The injection connector 81 is used to connect an injection device (not shown). The injection device provides plastic to the injection fitting. The plastic enters the injection runner 45 via the injection connection 81 and the hot nozzle 83. The plastic enters the product injection molding chamber 44 via the injection molding runner 45. After the plastic cools and hardens, the plastic in the product injection molding cavity 44 forms a plastic product P.
In this embodiment, the injection mold 200 further includes a movable pin 9, the movable pin 9 movably penetrates through the upper fixing plate 6, the female mold 2 and the male mold 3, and the movable pin 9 avoids the product injection molding cavity 44 and the injection molding runner 45, and the movable pin 9 is used for limiting in the mold opening and mold closing process, so as to prevent the product from being damaged in the mold opening process.
Referring to fig. 3 and 4, a second embodiment of the invention provides an injection mold 200, different from the first embodiment, the inner mold 4 includes a second runner block 46, and the second runner block 46 is movably disposed in the second mold core 42.
The second mold core 42 is provided with a first through hole 425, and the first through hole 425 penetrates through the first surface 421 and the second surface 422.
The first flow passage 424 further includes a connection flow passage 4243, the connection flow passage 4243 is connected between the feeding flow passage 4241 and the discharging flow passage 4242, the feeding flow passage 4241 is communicated with the second accommodating groove 423, one end of the discharging flow passage 4242, which is away from the connection flow passage 4243, is exposed out of the first surface 421, the first surface 421 corresponding to the connection flow passage 4243 is recessed inwards to form a second groove 4212, and the connection flow passage 4243 is exposed out of the bottom of the second groove 4212.
The second flow channel block 46 includes a main body portion 461 and a protrusion 462, and the protrusion 462 is disposed at one end of the main body portion 461 and has a second flow channel 431. The main body 461 is movably disposed in the first through hole 425, and the projection 462 is received in the second groove 4212 to communicate the second flow passage 431 with the connecting flow passage 4243.
As shown in fig. 3, when plastic is injected into the product injection cavity 44 through the injection runner 45, the projection 462 is located in the second groove 4212, and the second runner 431 is communicated with the connection runner 4243. Such that the second flow passage 431, the feed flow passage 4241, the discharge flow passage 4242, and the connection flow passage 4243 form an injection flow passage 45; the protruding block 462 is exposed to one side of the second groove 4212 and is located in the second containing groove 423, after the plastic in the product injection molding cavity 44 is cooled, a plastic product P is formed, and the plastic product is ejected through the protruding block 462.
As shown in fig. 4, when the plastic product P is to be taken out, the first mold core 41 is lifted to separate the first mold core 41 and the second mold core 42. Then, the body 461 is moved to move the projection 462 out of the second groove 4212, so as to separate the second flow passage 431 from the connection flow passage 4243. At this time, a portion of the plastic in the injection runner 45 is exposed. When the thimble 51 pulls out the plastic in the injection runner 45, the protrusion 462 pushes out the plastic product P.
Referring to fig. 5 and fig. 6, a third embodiment of the present invention provides an injection mold 300, different from the first and second embodiments, the inner mold 4 includes a third runner block 47, and the third runner block 47 is movably disposed in the second mold core 42.
The first flow passage 424 further includes a connection flow passage 4243, the connection flow passage 4243 is connected between the feeding flow passage 4241 and the discharging flow passage 4242, the feeding flow passage 4241 is communicated with the second accommodating groove 423, one end of the discharging flow passage 4242, which is away from the connection flow passage 4243, is exposed out of the first surface 421, the second surface 422, which corresponds to the connection flow passage 4243, is recessed inwards to form a third groove 4313, and the connection flow passage 4243 is exposed out of the bottom of the third groove 4313.
The third flow channel block 47 includes a first end 471 and a second end 472 opposite to the first end 471, the second flow channel 431 penetrates through two opposite sides of the second end 472, and the second end 472 is movably disposed in the third groove 4313, so that the second flow channel 431 can communicate with the connection flow channel 4243.
In this embodiment, the injection mold 300 further includes at least one elastic member 301, the elastic member 301 is disposed between the male mold 3 and the lower fixing plate 7, the first end 471 is connected to the lower fixing plate 7, and the elastic member 301 is used for ejecting the male mold 3 and the lower fixing plate 7 when the mold is opened, so that the second end 472 of the third flow channel block 47 exits the third groove 4313. The elastic member 301 is a compression spring.
As shown in fig. 5, when plastic is injected into the product injection cavity 44 through the injection flow channel 45, the second end 472 is located in the third groove 4313, and the second flow channel 431 is communicated with the connection flow channel 4243. In turn, the second flow channel 431, the feed flow channel 4241, the discharge flow channel 4242, and the connection flow channel 4243 form an injection flow channel 45. After which the plastic in the product injection mold cavity 44 cools to form the plastic product P of fig. 6.
As shown in fig. 6, when the plastic product P is to be taken out, the first mold core 41 is lifted to separate the first mold core 41 and the second mold core 42. Thereafter, the male mold 3 is lifted relative to the lower fixing plate 7 to separate the second end 472 from the connection flow passage 4243, thereby separating the second flow passage 431 from the connection flow passage 4243. At this time, a portion of the plastic in the injection runner 45 is exposed. When the ejector pin 51 ejects the plastic product P, the plastic in the injection runner 45 can be easily pulled out from one end of the injection runner 45.
Referring to fig. 7, a fourth embodiment of the invention provides an injection mold 400, different from the previous embodiments, the inner mold 4 includes a fourth runner block 48, and the fourth runner block 48 is movably disposed in the second mold core 42.
Referring to fig. 8, the second mold core 42 further includes a plurality of connecting side surfaces 426, the connecting side surfaces 426 are connected between the first surface 421 and the second surface 422, the connecting side surfaces 426 are recessed inward to form the fourth groove 4261, and the connecting flow passage 4243 is exposed from the bottom of the fourth groove 4261.
The fourth flow path block 48 includes a third end portion 481 and a fourth end portion 482 opposite to the third end portion 481, and the fourth end portion 482 is movably disposed in the fourth groove 4261. The fourth end 482 has the second flow channel 431. When the top of the fourth end portion 482 abuts against the second core 42, the second flow passage 431 is communicated with the connection flow passage 4243.
As shown in fig. 7, when plastic is injected into the product injection molding cavity 44 through the injection runner 45, the fourth runner block 48 is located in the fourth groove 4261, and the second runner 431 of the fourth end portion 482 is in communication with the connection runner 4243. In turn, the second flow channel 431, the feed flow channel 4241, the discharge flow channel 4242, and the connection flow channel 4243 form an injection flow channel 45. And then cooling the plastic in the product injection molding cavity 44 to form the plastic product P.
As shown in fig. 8A and 8B, after the plastic product P is formed, the fourth runner block 48 may be moved to separate the fourth end portion 482 from the connection runner 4243, so as to separate the second runner 431 from the connection runner 4243. At this time, a portion of the plastic in the injection runner 45 is exposed, so that the plastic in the injection runner 45 can be easily pulled out from one end of the injection runner 45.
It will be apparent to those skilled in the art that other corresponding changes and modifications can be made according to the actual requirements of the invention combined with the creation schemes and creation concepts, and these changes and modifications shall fall within the protection scope of the claims of the present invention.
Claims (10)
1. An internal mold, comprising:
a first mold core having a first receiving groove;
the second mold core is detachably arranged on one side of the first mold core and comprises a first surface and a second surface opposite to the first surface, the first surface is inwards sunken to form a second accommodating groove and a first flow channel communicated with the second accommodating groove, and the second accommodating groove is communicated with the first accommodating groove to form a product injection molding cavity;
the runner block is movably arranged in the second die core or connected with the first die core, the runner block is provided with a second runner, the first runner and the second runner are matched to form an injection molding runner, and the injection molding runner is used for injecting plastic into the product injection molding cavity.
2. The internal mold of claim 1, wherein the flow passage block is fixedly connected to a side of the first mold core facing the second mold core,
the first flow channel comprises a feeding flow channel and a discharging flow channel opposite to the feeding flow channel, the discharging flow channel is arranged below the first surface, the discharging flow channel is communicated with the second accommodating groove,
the first surface corresponding to the feeding flow channel is inwards sunken to form a first groove, the feeding flow channel is exposed out of the bottom of the first groove,
the runner block can be accommodated in the first groove, and the second runner is connected with the discharging runner.
3. The internal mold of claim 1, wherein the runner block is movably disposed in the second mold core,
the second mold core is provided with a first through hole which penetrates through the first surface and the second surface,
the first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which is far away from the connecting flow channel, is exposed on the first surface, the first surface corresponding to the connecting flow channel is inwards recessed to form a second groove, and the connecting flow channel is exposed at the bottom of the second groove,
the runner block comprises a main body part and a convex block, the convex block is arranged at one end of the main body part, the main body part is movably arranged in the first through hole, the convex block can be contained in the second groove, and the second runner is communicated with the connecting runner.
4. The internal mold of claim 1, wherein the runner block is movably disposed in the second mold core,
the second mold core is provided with a third groove, the second surface is inwards sunken to form the third groove,
the first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which is far away from the connecting flow channel, is exposed out of the first surface, the connecting flow channel is communicated with the bottom of the third groove,
the runner block comprises a first end part and a second end part opposite to the first end part, the second end part is movably arranged in the third groove, and the second runner is communicated with the connecting runner.
5. The internal mold of claim 1, wherein the runner block is movably disposed in the second mold core,
the second die core also comprises a plurality of connecting side surfaces, the connecting side surfaces are connected between the first surface and the second surface, the second die core is provided with a fourth groove, the connecting side surfaces are inwards sunken to form the fourth groove,
the first flow channel comprises a feeding flow channel, a discharging flow channel and a connecting flow channel connected with the feeding flow channel and the discharging flow channel, the feeding flow channel is communicated with the second accommodating groove, one end of the discharging flow channel, which is far away from the connecting flow channel, is exposed out of the first surface, the connecting flow channel is communicated with the bottom of the fourth groove,
the runner block comprises a third end part and a fourth end part opposite to the third end part, the fourth end part is movably arranged in the fourth groove, and the second runner is communicated with the connecting runner.
6. An internal mold according to any one of claims 1 to 5, wherein the injection runner is formed as a horn, the cross-sectional area of the injection runner decreasing from the inlet runner to the outlet runner.
7. An injection mold for forming a plastic product, comprising a female mold, a male mold, a pin mechanism and the inner mold according to any one of claims 1 to 5, wherein the first mold core is accommodated in the female mold, the second mold core is accommodated in the male mold, the pin mechanism comprises a pin and a pin driving member, the pin penetrates through the male mold and the second mold core, and the pin driving member is used for driving the pin to eject the plastic product and the plastic in the injection runner.
8. The injection mold of claim 7, further comprising an upper retaining plate and a lower retaining plate, wherein the upper retaining plate is connected to the female mold on a side facing away from the male mold, and the lower retaining plate is connected to the male mold on a side facing away from the female mold.
9. The injection mold of claim 8, further comprising an injection pipeline, wherein the injection pipeline comprises an injection joint and a hot nozzle communicated with the injection joint, the injection joint is disposed at one side of the upper fixing plate, one end of the hot nozzle passes through the upper fixing plate and is communicated with the injection joint, the other end of the hot nozzle passes through the female mold, the first mold core and is communicated with the feeding runner, the injection joint is used for connecting an injection device, the injection device provides plastic to the injection joint, and the plastic enters the injection runner through the injection joint and the hot nozzle.
10. The injection mold of claim 8, further comprising a movable pin movably extending through the upper retaining plate, the female mold and the male mold, the movable pin avoiding the product injection cavity and the injection runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588980.3A CN114683491A (en) | 2020-12-29 | 2020-12-29 | Internal mold and injection mold with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588980.3A CN114683491A (en) | 2020-12-29 | 2020-12-29 | Internal mold and injection mold with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114683491A true CN114683491A (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011588980.3A Pending CN114683491A (en) | 2020-12-29 | 2020-12-29 | Internal mold and injection mold with same |
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| CN (1) | CN114683491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681386A (en) * | 2023-12-29 | 2024-03-12 | 东莞利富高塑料制品有限公司 | Mould core assembly for automobile parts, injection mould and production equipment |
Citations (11)
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| CN210257072U (en) * | 2019-07-05 | 2020-04-07 | 苏州第一塑胶有限公司 | Double-color injection mold with high cleanliness |
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| CN117681386A (en) * | 2023-12-29 | 2024-03-12 | 东莞利富高塑料制品有限公司 | Mould core assembly for automobile parts, injection mould and production equipment |
| CN117681386B (en) * | 2023-12-29 | 2024-09-13 | 东莞利富高塑料制品有限公司 | Mould core assembly for automobile parts, injection mould and production equipment |
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Application publication date: 20220701 |