CN214111245U - High cylindricity injection mold - Google Patents
High cylindricity injection mold Download PDFInfo
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- CN214111245U CN214111245U CN202021950392.5U CN202021950392U CN214111245U CN 214111245 U CN214111245 U CN 214111245U CN 202021950392 U CN202021950392 U CN 202021950392U CN 214111245 U CN214111245 U CN 214111245U
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Abstract
The high cylindricity injection mold of the utility model comprises a mold core external member, an external cooling mold insert and an internal cooling mold insert, wherein the mold core external member is positioned on the injection molding machine, and the internal cooling mold insert, the mold core external member and the external cooling mold insert jointly enclose a product forming cavity; due to the arrangement of the external cooling insert, the sizing material in the product molding cavity, which is in contact with the external cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the outer surface part of the plastic product is greatly improved; due to the arrangement of the inner-cooling insert, the sizing material in the product forming cavity, which is in contact with the inner-cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the inner surface part of the plastic product is greatly improved; so, the setting of outer cold mold insert and interior cold mold insert can all-round improvement plastic product each position department the cooling synchronization rate of sizing material to prevent that the not enough situation of circularity from appearing because of each partial cooling rate's difference in the sizing material that is used for the shaping plastic product, and then greatly improve plastic product's interior circularity and outer circularity.
Description
Technical Field
The utility model relates to an injection mold field especially relates to a high cylindricity injection mold.
Background
At present, various plastic parts are generally injection molded by using an injection mold, and according to different requirements of users, manufacturers can adjust the proportion of sizing materials and the like so that the injection molded plastic parts can be matched with the requirements of the users, for example, the surfaces of toys for children generally need to be injection molded with soft glue to prevent the plastic parts from causing personal injury to the users, and certain secondary processing manufacturers can have higher requirements on the adhesion between the surfaces of the plastic parts and paint so that the paint can be more reliably attached to the surfaces of the plastic parts after being sprayed to the surfaces of the plastic parts.
However, the existing injection mold often suffers from the following technical problems during the use process:
firstly, in the molding process of the plastic part, the participating stress is easily generated in the molding process of the product due to uneven local cooling, so that the product is deformed and damaged;
secondly, in some application scenarios, the requirement for the forming roundness of the cylindrical plastic part is high, however, in the cooling and forming process of the rubber material, the cooling and forming synchronization rate of the rubber material is very low, and the rubber material used for forming the plastic part in the mold has insufficient roundness due to different cooling rates of all parts.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing a high cylindricity injection mold, this high cylindricity injection mold can prevent that the plastic part from leading to the product to take place to warp or damage because of local cooling inequality in the forming process, can also improve the cooling synchronization rate of the sizing material of cylindric plastic part each part effectively.
The purpose of the utility model is realized through the following technical scheme:
a high cylindricity injection mold comprising:
the mold core assembly comprises a movable mold core and a fixed mold core, the movable mold core and the fixed mold core are respectively arranged on the injection molding machine, a containing groove is formed in the movable mold core, a position avoiding hole is formed in the bottom of the containing groove, and a water inlet hole and a water outlet hole are formed in the side wall of the containing groove;
the outer cooling insert is provided with a water inlet spiral line and a water outlet spiral line which are communicated with each other, the outer cooling insert is arranged in the accommodating groove, the water inlet spiral line is communicated with the water inlet hole, the water outlet spiral line is communicated with the water outlet hole, the water inlet spiral line and the groove wall of the accommodating groove jointly form a water inlet cooling channel, and the water outlet spiral line and the groove wall of the accommodating groove jointly form a water outlet cooling channel; and
the inner-cooling insert is provided with an inner-cooling spiral water channel, an inner-cooling water inlet hole and an inner-cooling water outlet hole, and the inner-cooling water inlet hole and the inner-cooling water outlet hole are respectively communicated with the inner-cooling spiral water channel;
when the movable mold core and the fixed mold core are used for closing the mold, the inner cooling insert is sequentially inserted into the avoiding hole and the outer cooling insert, so that the outer cooling insert, the fixed mold core and the inner cooling insert jointly enclose a product forming cavity.
In one embodiment, the high-cylindricity injection mold further includes a sealing sleeve, the sealing sleeve includes an upper sealing member and a lower sealing member, the upper sealing member is disposed on the movable mold core, the upper sealing member is respectively and mutually supported by the outer cold insert and the movable mold core, the lower sealing member is disposed at the bottom of the accommodating groove, and the lower sealing member is respectively and mutually supported by the bottom of the accommodating groove and the outer cold insert.
In one embodiment, the upper sealing element is an O-ring and the lower sealing element is an O-ring.
In one embodiment, the moving mold core is further provided with a glue injection hole, the outer cooling insert is further provided with a glue inlet hole and a molding hole which are communicated with each other, the glue injection hole is communicated with the glue inlet hole, and the inner cooling insert, the fixed mold core and the wall of the molding hole jointly enclose the product molding cavity.
In one embodiment, the high-cylindricity injection mold further comprises an external cooling water inlet joint, the external cooling water inlet joint is arranged on the movable mold core, and the external cooling water inlet joint is communicated with the water inlet hole.
In one embodiment, the fixed mold core is further provided with a positioning insertion hole, the high-cylindricity injection mold further comprises a positioning plug pin, the positioning plug pin is connected with the movable mold core, and the positioning plug pin is used for being inserted into the positioning insertion hole.
In one embodiment, the locating pin is provided with an insertion chamfer.
In one embodiment, the high-cylindricity injection mold further comprises a mold locking kit, the mold locking kit comprises a mold locking plate and two mold locking screws, each mold locking screw penetrates through the mold locking plate, one of the mold locking screws is used for being connected with the movable mold core, and the other mold locking screw is used for being connected with the fixed mold core.
In one embodiment, the external cooling insert is of an axisymmetric structure.
In one embodiment, the fixed die core is further provided with a chamfer part.
Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:
the high cylindricity injection mold of the utility model comprises a mold core external member, an external cooling mold insert and an internal cooling mold insert, wherein the mold core external member is positioned on the injection molding machine, and the internal cooling mold insert, the mold core external member and the external cooling mold insert jointly enclose a product forming cavity; due to the arrangement of the external cooling insert, the sizing material in the product molding cavity, which is in contact with the external cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the outer surface part of the plastic product is greatly improved; due to the arrangement of the inner-cooling insert, the sizing material in the product forming cavity, which is in contact with the inner-cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the inner surface part of the plastic product is greatly improved; so, the setting of outer cold mold insert and interior cold mold insert can all-round improvement plastic product each position department the cooling synchronization rate of sizing material to prevent that the not enough situation of circularity from appearing because of each partial cooling rate's difference in the sizing material that is used for the shaping plastic product, and then greatly improve plastic product's interior circularity and outer circularity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a high-cylindricity injection mold according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a high-cylindricity injection mold according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
fig. 4 is a schematic structural view of a mold core external member and a sealing external member according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an external cooling insert according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an inner-cooling insert according to an embodiment of the present invention;
fig. 7 is an enlarged schematic view at B of fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. 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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
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 herein in the description of the invention 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, 2 and 3, the high-cylindricity injection mold 10 includes a mold core assembly 100, an outer cold insert 200 and an inner cold insert 300, wherein the mold core assembly 100 is disposed on an injection molding machine, and the outer cold insert 200 and the inner cold insert 300 are disposed on the mold core assembly 100, respectively.
It should be noted that the high cylindricity injection mold 10 is used for injection molding a plastic product; the die core external member 100 is used for die assembly under the driving of an injection molding machine; the outer cold insert 200, the inner cold insert 300, and the core assembly 100 are used together to form the product-forming cavity 20.
Referring to fig. 1, 2, 3 and 4, the mold insert assembly 100 includes a movable mold insert 110 and a fixed mold insert 120, the movable mold insert 110 and the fixed mold insert 120 are respectively disposed on the injection molding machine, the movable mold insert 110 is provided with a receiving groove 111, the bottom of the receiving groove 111 is provided with a clearance hole 112, and the side wall of the receiving groove 111 is provided with a water inlet 113 and a water outlet 114.
It should be noted that the movable mold core 110 is driven by the injection molding machine to move toward or away from the fixed mold core 120, so as to complete the mold closing or opening of the injection mold; the accommodating groove 111 is used for accommodating the external cooling insert 200; the avoiding hole 112 is formed, so that the inner cooling insert 300 can pass through the moving mold core 110 and be inserted into the outer cooling insert 200; the water inlet hole 113 is formed, so that an external water pump can input cooling water into the accommodating groove 111; the outlet hole 114 is formed so that the cooling water in the receiving groove 111 can be discharged to the outside of the movable mold core 110.
Referring to fig. 3 and 5, the external cooling insert 200 is provided with a water inlet spiral pattern 210 and a water outlet spiral pattern 220, which are communicated with each other, the external cooling insert 200 is disposed in the accommodating groove 111, the water inlet spiral pattern 210 is communicated with the water inlet hole 113, the water outlet spiral pattern 220 is communicated with the water outlet hole 114, the water inlet spiral pattern 210 and the wall of the accommodating groove 111 jointly form a water inlet cooling channel 230, and the water outlet spiral pattern 220 and the wall of the accommodating groove 111 jointly form a water outlet cooling channel 240.
It should be noted that the water inlet spiral threads 210 and the water outlet spiral threads 220 are used for guiding the cooling water to flow; the inlet cooling channel 230 and the outlet cooling channel 240 are used to guide the cooling water to flow along a predetermined trajectory.
Referring to fig. 3 and fig. 6, the inner cooling insert 300 is provided with an inner cooling spiral water channel 310, an inner cooling water inlet 320 and an inner cooling water outlet 330, and the inner cooling water inlet 320 and the inner cooling water outlet 330 are respectively communicated with the inner cooling spiral water channel 310;
in an actual injection molding process, when the movable mold core 110 is used for being matched with the fixed mold core 120, the inner cooling insert 300 is sequentially inserted into the clearance hole 112 and the outer cooling insert 200, so that the outer cooling insert 200, the fixed mold core 120 and the inner cooling insert 300 together enclose the product molding cavity 20.
It should be noted that the inner-cooling spiral water channel 310 is spiral, so that the cooling water can flow in a spiral manner in the inner-cooling insert 300; the inner cooling water inlet hole 320 is arranged, so that cooling water can smoothly enter and exit the inner cooling spiral water channel 310; the inner cooling water outlet hole 330 is formed, so that cooling water in the inner cooling spiral water channel 310 can flow out of the injection mold; the product-forming cavity 20 is used to receive the glue so that the glue can be formed in a predetermined shape.
In order to better understand the technical scheme of the present invention, in the actual injection molding process, the glue material in the product molding cavity 20 will contact with the outer cooling insert 200 and the inner cooling insert 300; the water inlet spiral threads 210 and the water outlet spiral threads 220 are spiral, so that cooling water injected into the accommodating groove 111 flows along the side wall of the outer cold insert 200 in a spiral manner, and all positions of the outer cold insert 200 can be cooled stably and reliably, so that the cooling forming rate of the rubber material contacting with the outer cold insert 200 in the product forming cavity 20 is as same as possible, poor forming such as sinking and bending of the rubber material outside the plastic product due to different cooling rates is prevented, and the forming roundness of the outside of the plastic product is improved.
Furthermore, due to the arrangement of the internal cooling spiral water channel 310, cooling water can flow in the internal cooling insert 300 in a spiral manner, so that all parts of the internal cooling insert 300 can be cooled, the cooling rates of all parts of the internal cooling insert 300 are the same as much as possible, and further the cooling forming rates of the rubber materials in the product forming cavity 20, which are in contact with the internal cooling insert 300, are the same as much as possible, so that the molding defects of the rubber materials in the plastic product due to different cooling rates can be prevented, and the roundness of the interior of the plastic product is improved.
To sum up, compare in prior art only guarantee to improve the injection mold of plastic product surface shaping circularity, the technical scheme of the utility model not only guaranteed shaping circularity from the outside of plastic product, still guaranteed the shaping circularity of product from the inside of plastic product, improved the interior circularity and the excircle degree shaping precision of plastic product effectively.
Referring to fig. 4, in one embodiment, the high-cylindricity injection mold 10 further includes a sealing sleeve 400, the sealing sleeve 400 includes an upper sealing member 410 and a lower sealing member 420, the upper sealing member 410 is disposed on the movable mold core 110, the upper sealing member 410 is respectively supported by the outer cold insert 200 and the movable mold core 110, the lower sealing member 420 is disposed at the bottom of the receiving groove 111, and the lower sealing member 420 is respectively supported by the bottom of the receiving groove 111 and the outer cold insert 200.
It should be noted that the sealing kit 400 plays a role of sealing the cooling water; the arrangement of the upper sealing member 410 and the lower sealing member 420 prevents the cooling water injected into the accommodating groove 111 from overflowing from the top of the accommodating groove 111, and also prevents the cooling water injected into the accommodating groove 111 from flowing into the clearance hole 112 at the bottom of the groove along the groove wall of the accommodating groove 111, thereby preventing the cooling water from entering the product forming cavity 20 and preventing the cooling water from entering the sizing material.
Referring to fig. 4, in one embodiment, the upper sealing element 410 is an O-ring and the lower sealing element 420 is an O-ring.
The use of O-rings as the upper seal 410 and O-rings as the lower seal 420 can reduce the overall cost of the seal kit 400.
Referring to fig. 1 and fig. 3, in one embodiment, the movable mold core 110 is further provided with a glue injection hole 115, the outer cold insert 200 is further provided with a glue inlet hole 250 and a molding hole 260 which are communicated with each other, the glue injection hole 114 is communicated with the glue inlet hole 250, and the inner cold insert 300, the fixed mold core 120 and the molding hole 260 define a product molding cavity 20.
It should be noted that, in the actual injection molding process, the injection molding machine injects the glue material into the glue inlet hole 250 through the glue injection hole 115, and then the glue inlet hole 250 guides the glue material into the molding hole 260, so that the glue material can be cooled and molded along the hole wall of the molding hole 260, the outer side wall of the inner cooling insert 300, and the stationary mold core 120.
Referring to fig. 1, in one embodiment, the high-cylindricity injection mold 10 further includes an external cold water inlet connector 500, the external cold water inlet connector 500 is disposed on the movable mold core 110, and the external cold water inlet connector 500 is communicated with the water inlet hole 113.
It should be noted that the external cooling water inlet connector 500 is used to communicate with an output port of an external water pump, so that the external water pump can inject cooling water into the water inlet 113.
Referring to fig. 7, in one embodiment, the fixed mold core 120 is further provided with a positioning insertion hole 121, the high-cylindricity injection mold 10 further includes a positioning plug 600, the positioning plug 600 is connected with the movable mold core 110, and the positioning plug 600 is used for being inserted into the positioning insertion hole 121.
It should be noted that, the positioning insertion hole 121 is used for accommodating the positioning plug 600, so that the injection mold can be accurately closed, the closing precision is improved, and the forming precision of the plastic product is improved.
Referring to fig. 7, in one embodiment, the positioning pin 600 is provided with an insertion chamfer 610.
It should be noted that the insertion chamfer 610 is used to guide the positioning pin 600 to be inserted into the positioning insertion hole 121, so as to prevent the corner of the positioning pin 600 from being stuck on the opening of the positioning insertion hole 121.
Referring to fig. 1, in one embodiment, the high-cylindricity injection mold 10 further includes a mold locking kit 700, the mold locking kit 700 includes a mold locking plate 710 and two mold locking screws 720, each mold locking screw 720 penetrates through the mold locking plate 710, one of the mold locking screws 720 is used for connecting with the movable mold core 110, and the other mold locking screw 720 is used for connecting with the fixed mold core 120.
It should be noted that the mold locking assembly 700 is used for locking the movable mold core 110 and the fixed mold core 120 to each other, so as to prevent the movable mold core 110 and the fixed mold core 120 from being accidentally opened and closed during transportation or movement; the locking screws 720 are used to fix the locking plate 710 to the mold core assembly 100.
Referring to fig. 3 and 5, in one embodiment, the external cooling insert 200 has an axisymmetric structure.
It should be noted that, the external cooling insert 200 is configured to have an axisymmetric structure, so as to further improve the molding roundness of the outer surface of the plastic product.
Referring to fig. 1, in one embodiment, the stationary mold insert 120 further has a chamfered portion 122.
It should be noted that the chamfer 122 is provided to prevent the corner of the fixed mold insert 120 from being directly damaged during the collision process.
Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:
the high cylindricity injection mold of the utility model comprises a mold core external member, an external cooling mold insert and an internal cooling mold insert, wherein the mold core external member is positioned on the injection molding machine, and the internal cooling mold insert, the mold core external member and the external cooling mold insert jointly enclose a product forming cavity; due to the arrangement of the external cooling insert, the sizing material in the product molding cavity, which is in contact with the external cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the outer surface part of the plastic product is greatly improved; due to the arrangement of the inner-cooling insert, the sizing material in the product forming cavity, which is in contact with the inner-cooling insert, can be cooled to the same degree, so that the cooling synchronization rate of the sizing material on the inner surface part of the plastic product is greatly improved; so, the setting of outer cold mold insert and interior cold mold insert can all-round improvement plastic product each position department the cooling synchronization rate of sizing material to prevent that the not enough situation of circularity from appearing because of each partial cooling rate's difference in the sizing material that is used for the shaping plastic product, and then greatly improve plastic product's interior circularity and outer circularity.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A high cylindricity injection mold, its characterized in that includes:
the mold core assembly comprises a movable mold core and a fixed mold core, the movable mold core and the fixed mold core are respectively arranged on the injection molding machine, a containing groove is formed in the movable mold core, a position avoiding hole is formed in the bottom of the containing groove, and a water inlet hole and a water outlet hole are formed in the side wall of the containing groove;
the outer cooling insert is provided with a water inlet spiral line and a water outlet spiral line which are communicated with each other, the outer cooling insert is arranged in the accommodating groove, the water inlet spiral line is communicated with the water inlet hole, the water outlet spiral line is communicated with the water outlet hole, the water inlet spiral line and the groove wall of the accommodating groove jointly form a water inlet cooling channel, and the water outlet spiral line and the groove wall of the accommodating groove jointly form a water outlet cooling channel; and
the inner-cooling insert is provided with an inner-cooling spiral water channel, an inner-cooling water inlet hole and an inner-cooling water outlet hole, and the inner-cooling water inlet hole and the inner-cooling water outlet hole are respectively communicated with the inner-cooling spiral water channel;
when the movable mold core and the fixed mold core are used for closing the mold, the inner cooling insert is sequentially inserted into the avoiding hole and the outer cooling insert, so that the outer cooling insert, the fixed mold core and the inner cooling insert jointly enclose a product forming cavity.
2. The high cylindricity injection mold according to claim 1, further comprising a sealing sleeve member, the sealing sleeve member comprising an upper sealing member and a lower sealing member, the upper sealing member being disposed on the movable mold core, the upper sealing member being mutually supported by the outer cold insert and the movable mold core, respectively, the lower sealing member being disposed at the bottom of the accommodating groove, the lower sealing member being mutually supported by the bottom of the accommodating groove and the outer cold insert, respectively.
3. The high cylindricity injection mold of claim 2, wherein the upper seal is an O-ring seal and the lower seal is an O-ring seal.
4. The high cylindricity injection mold according to claim 1, wherein the movable mold core is further provided with a glue injection hole, the outer cold insert is further provided with a glue inlet hole and a molding hole which are communicated with each other, the glue injection hole is communicated with the glue inlet hole, and the inner cold insert, the fixed mold core and the molding hole have hole walls which jointly enclose the product molding cavity.
5. The high cylindricity injection mold of claim 1 or 4, characterized in that, the high cylindricity injection mold further includes outer cold water inlet joint, outer cold water inlet joint sets up on the movable mould core, outer cold water inlet joint with the inlet opening intercommunication.
6. The high cylindricity injection mold according to claim 1, wherein the fixed mold core is further provided with a positioning insertion hole, the high cylindricity injection mold further comprises a positioning plug pin, the positioning plug pin is connected with the movable mold core, and the positioning plug pin is used for being inserted into the positioning insertion hole.
7. The high cylindricity injection mold of claim 6, wherein the locating spigot has an insertion chamfer portion formed thereon.
8. The high cylindricity injection mold according to claim 1, further comprising a mode locking kit, wherein the mode locking kit comprises a mode locking plate and two mode locking screws, each mode locking screw penetrates through the mode locking plate, and one of the mode locking screws is used for being connected with the movable mold core and the other mode locking screw is used for being connected with the fixed mold core.
9. The high cylindricity injection mold according to claim 1, wherein the external cold insert is of an axisymmetric configuration.
10. The high cylindricity injection mold according to claim 1, wherein the fixed mold insert is further provided with a chamfer portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021950392.5U CN214111245U (en) | 2020-09-08 | 2020-09-08 | High cylindricity injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021950392.5U CN214111245U (en) | 2020-09-08 | 2020-09-08 | High cylindricity injection mold |
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| Publication Number | Publication Date |
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| CN214111245U true CN214111245U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021950392.5U Active CN214111245U (en) | 2020-09-08 | 2020-09-08 | High cylindricity injection mold |
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| CN (1) | CN214111245U (en) |
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- 2020-09-08 CN CN202021950392.5U patent/CN214111245U/en active Active
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