CN209832333U - Improved mold core - Google Patents
Improved mold core Download PDFInfo
- Publication number
- CN209832333U CN209832333U CN201920119176.7U CN201920119176U CN209832333U CN 209832333 U CN209832333 U CN 209832333U CN 201920119176 U CN201920119176 U CN 201920119176U CN 209832333 U CN209832333 U CN 209832333U
- Authority
- CN
- China
- Prior art keywords
- mold core
- hole
- workpiece
- injection hole
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of injection molds, in particular to an improved mold core, which comprises an upper template, a lower template, an upper mold core and a lower mold core, wherein the lower template is provided with a first through hole, a cylinder of the lower mold core stretches into the first through hole, and an annular gap for forming the side wall of a workpiece is arranged between the side surface of the cylinder and the wall of the first through hole; an accommodating gap for forming the top wall of the workpiece is formed between the bottom wall of the accommodating blind hole of the upper mold core and the end surface of the free end of the cylinder; the upper mold core is provided with a plurality of first injection holes which are respectively communicated with the accommodating gaps; the cylinder is provided with a first groove body, the first groove body is formed by recessing the end face of the free end of the cylinder, and the two ends of the first groove body are respectively communicated with the annular gap; in the forming process of the workpiece, molten plastic is injected into the plurality of first injection holes simultaneously, so that the injection molding efficiency of the workpiece is improved; the reinforcing ribs connected with the side wall of the workpiece are formed by the first groove body, so that the strength of the workpiece is enhanced, the workpiece is prevented from being taken out and deformed, and the forming yield of the workpiece is improved.
Description
Technical Field
The utility model relates to an injection mold technical field especially discloses an improvement formula mold core.
Background
The injection mold is one of common tools for molding plastic parts, the plastic parts have various shapes, and in the actual production process, a hollow cylindrical plastic part is often required to be molded. In addition, since the wall thickness of the hollow cylindrical plastic part is relatively thin, in the molding process of the hollow cylindrical plastic part, poor taking-out often occurs due to the low strength of the hollow cylindrical plastic part, which is not favorable for improving the injection molding yield of the plastic part.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide an improved mold core, wherein a plurality of first injection holes are simultaneously injected with molten plastic, so that the injection molding efficiency of a workpiece is improved; the reinforcing ribs connected with the side wall of the workpiece are formed by the first groove body, so that the strength of the workpiece is enhanced, the workpiece is prevented from being taken out and deformed, and the forming yield of the workpiece is improved.
In order to achieve the purpose, the utility model discloses an improved mold core, including cope match-plate pattern, lower bolster, cope match-plate pattern and lower mold core, the lower bolster is equipped with the first through-hole that runs through the lower bolster, the lower mold core is equipped with the ring platform and the cylinder of being connected with the ring platform, the ring platform is used for contradicting on the lower surface of lower bolster, the cylinder is protruding to stretch into in the first through-hole, have the annular clearance that is used for the lateral wall of shaping work piece between the pore wall of the side surface of cylinder and first through-hole; the upper mold core is abutted against the upper surface of the lower mold plate, the upper mold core is provided with an accommodating blind hole communicated with the annular gap, and an accommodating gap for forming the top wall of the workpiece is formed between the bottom wall of the accommodating blind hole and the end surface of the free end of the cylinder; the lower surface of the upper template is used for abutting against the upper surface of the lower template, the lower template is provided with a second through hole penetrating through the lower template, and the upper die core is accommodated in the second through hole; the upper mold core is provided with a plurality of first injection holes which are respectively communicated with the accommodating gaps, and the first injection holes are arranged around the central axis of the upper mold core in a concentric ring manner; the cylinder is equipped with first cell body, and first cell body is established from the terminal surface of cylindrical free end recess and is formed, and the both ends of first cell body communicate annular clearance respectively.
The upper mold core is provided with a central injection hole, the central injection hole is positioned in the center of the upper mold core, the upper mold core is provided with a plurality of first flow channels, the first flow channels are formed by concave arrangement of the upper surface of the upper mold core, the first flow channels correspond to the first injection holes one by one, and the first injection holes are communicated with the central injection hole through the first flow channels.
The upper mold core is provided with a plurality of second injection holes which are respectively communicated with the accommodating gaps, the second injection holes are arranged in a concentric ring mode around the central axis of the upper mold core, and the distance between the first injection hole and the central injection hole is larger than the distance between the second injection hole and the central injection hole.
The upper mold core is provided with a plurality of second runners, the second runners are formed by concave arrangement of the upper surface of the upper mold core, the second runners correspond to the second injection holes one by one, the second injection holes are communicated with the central injection hole through the second runners, and the width of the first runners is larger than that of the second runners.
The cylinder is provided with a second groove body, the second groove body is formed by the end face of the free end of the cylinder in a concave mode, two ends of the second groove body are respectively communicated with the annular gap, and the first groove body and the second groove body are perpendicular to each other.
The number of the first groove bodies is two, the two first groove bodies are arranged in parallel, the number of the second groove bodies is two, the two second groove bodies are arranged in parallel, the central injection hole is located between the two first groove bodies, and the central injection hole is located between the two second groove bodies.
The injection hole is conical, and the aperture of one end, close to the accommodating gap, of the injection hole is smaller than that of one end, far away from the accommodating gap, of the injection hole.
The lower die plate is provided with a first ring groove, the first ring groove is formed by the concave arrangement of the lower surface of the lower die plate, the two ends of the first ring groove penetrate through the side surface of the lower die plate, and the first ring groove is arranged around the first through hole and the lower die core.
The upper die plate is provided with a second annular groove, the second annular groove is formed by concavely arranging the upper surface of the upper die plate, two ends of the second annular groove penetrate through the side surface of the upper die plate, and the second annular groove is arranged around the second through hole and the upper die core.
The lower mold core is provided with a plurality of ejection holes, the ejection holes penetrate through the lower mold core, the ejection holes are communicated with the accommodating gaps, and the ejection holes are annularly arrayed around the central axis of the cylinder.
Has the advantages that: in the forming process of the workpiece, molten plastic is injected into the plurality of first injection holes simultaneously, so that the injection molding efficiency of the workpiece is improved; the reinforcing ribs connected with the side wall of the workpiece are formed by the first groove body, so that the strength of the workpiece is enhanced, the workpiece is prevented from being taken out and deformed, and the forming yield of the workpiece is improved.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is a schematic view of the exploded structure of the present invention.
The reference numerals include:
1-upper template 2-lower template 3-upper mold core
4-lower die core 5-first through hole 6-ring platform
7-column 8-second through hole 9-first injection hole
11-first groove body 12-central injection hole 13-first flow channel
14-second injection hole 15-second flow channel 16-second groove body
17-first ring groove 18-second ring groove 19-ejection hole.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying drawings, which are not intended to limit the present invention.
Referring to fig. 1 to 3, the utility model discloses an improved mold core, including cope match-plate pattern 1, lower bolster 2, cope match-plate pattern 3 and lower mold core 4, lower bolster 2 is equipped with first through-hole 5 that runs through lower bolster 2, lower mold core 4 is equipped with ring platform 6 and the cylinder 7 of being connected with ring platform 6, ring platform 6 is used for contradicting on the lower surface of lower bolster 2, realize the assembly cooperation of lower bolster 2 and lower mold core 4, cylinder 7 stretches into in the first through-hole 5 suddenly, have the annular clearance that is used for the lateral wall of shaping work piece between the pore wall of the first through-hole 5 and the side surface of cylinder 7; the upper mold core 3 is abutted against the upper surface of the lower mold plate 2, the upper mold core 3 is provided with an accommodating blind hole communicated with the annular gap, and an accommodating gap for forming the top wall of the workpiece is formed between the bottom wall of the accommodating blind hole and the end surface of the free end of the cylinder 7; the lower surface of the upper template 1 is used for abutting against the upper surface of the lower template 2, the lower template 2 is provided with a second through hole 8 penetrating through the lower template 2, and the upper mold core 3 is accommodated in the second through hole 8; the upper mold core 3 is provided with a plurality of first injection holes 9 which are respectively communicated with the accommodating gaps, and the plurality of first injection holes 9 are arranged around the central axis of the upper mold core 3 in a concentric ring manner; the cylinder 7 is provided with a first groove body 11, the first groove body 11 is formed by recessing the end face of the free end of the cylinder 7, and two ends of the first groove body 11 are respectively communicated with the annular gap.
In the molding process of the workpiece, the plurality of first injection holes 9 are injected with molten plastic at the same time, so that compared with the injection of the molten plastic by only one injection hole, the injection molding efficiency of the workpiece is greatly improved; the concentric rings of the first injection holes 9 are arranged to ensure that external molten plastic enters the accommodating gap at the same time, ensure that the temperature of the molten plastic entering the accommodating gap is the same, and assist in improving the injection molding yield of workpieces; the first groove body 11 is used for forming the reinforcing ribs connected with the side wall of the workpiece, so that the strength of the workpiece is enhanced, the workpiece is prevented from being taken out and deformed, and the forming yield of the workpiece is improved.
The upper mold core 3 is provided with a central injection hole 12, the central injection hole 12 is positioned at the central position of the upper mold core 3, the upper mold core 3 is provided with a plurality of first flow channels 13, the first flow channels 13 are formed by being concavely arranged on the upper surface of the upper mold core 3, the first flow channels 13 are in one-to-one correspondence with the first injection holes 9, and the first injection holes 9 are communicated with the central injection hole 12 through the first flow channels 13. In practical use, the external molten plastic is injected into the central injection hole 12, the molten plastic in the central injection hole 12 enters the first injection hole 9 through the first flow channel 13, and the molten plastic is injected into the accommodating gap, the annular gap and the first groove 11 through the first injection hole 9.
The upper mold core 3 is provided with a plurality of second injection holes 14 which are respectively communicated with the accommodating gaps, the plurality of second injection holes 14 are arranged in a concentric ring mode around the central axis of the upper mold core 3, and the distance between the first injection hole 9 and the central injection hole 12 is larger than the distance between the second injection holes 14 and the central injection hole 12.
The upper mold core 3 is provided with a plurality of second flow channels 15, the second flow channels 15 are formed by being concavely arranged on the upper surface of the upper mold core 3, the second flow channels 15 correspond to the second injection holes 14 one by one, the second injection holes 14 are communicated with the central injection hole 12 through the second flow channels 15, and the width of the first flow channel 13 is larger than that of the second flow channels 15.
Through the cooperation of the first flow channel 13 and the second flow channel 15, the temperature of the molten plastic injected into the accommodating gap by the first injection hole 9 is ensured to be approximately equal to the temperature of the molten plastic injected into the accommodating gap by the second injection hole 14, so that poor molding caused by unequal local temperatures of workpieces is avoided, and the molding yield of the workpieces is improved in an auxiliary manner.
The cylinder 7 is provided with a second groove body 16, the second groove body 16 is formed by recessing the end face of the free end of the cylinder 7, two ends of the second groove body 16 are respectively communicated with the annular gap, and the first groove body 11 and the second groove body 16 are vertically arranged. Through the arrangement of the first groove body 11 and the second groove body 16, after the workpiece is subjected to injection molding, the plastic in the first groove body 11 and the second groove body 16 form a reinforcing rib connected with the side wall of the workpiece, so that the strength of the workpiece is greatly increased, and the workpiece is prevented from being poor due to low strength; by means of the mutually perpendicular arrangement of the first groove body 11 and the second groove body 16, the workpiece is ensured to have reinforcing ribs in the mutually perpendicular width direction and thickness direction, and the workpiece is prevented from being damaged due to the fact that the workpiece is weak in strength in the width direction or the thickness direction. Preferably, the number of the first grooves 11 is two, two first grooves 11 are arranged in parallel, the number of the second grooves 16 is two, and two second grooves 16 are arranged in parallel.
The number of the first groove bodies 11 is two, the two first groove bodies 11 are arranged in parallel, the number of the second groove bodies 16 is two, the two second groove bodies 16 are arranged in parallel, the central injection hole 12 is located between the two first groove bodies 11, and the central injection hole 12 is located between the two second groove bodies 16.
The injection hole is conical, and the aperture of one end of the injection hole close to the accommodating gap is smaller than that of one end of the injection hole far away from the accommodating gap. Through the special structure setting of the injection hole, when external molten plastic flows into the containing blind hole through the injection hole, the flow speed of the molten plastic is increased by means of the reduction of the aperture of the injection hole, so that the molten plastic is quickly filled in the containing gap, the annular gap, the first groove body 11 and the second groove body 16, the temperature of the molten plastic at each part of the formed workpiece is approximately uniform, and the defect that the internal stress of each part of the workpiece is unequal due to different temperatures of the molten plastic at each part of the formed workpiece is avoided.
Lower bolster 2 has first annular 17, and first annular 17 is established from the lower surface of lower bolster 2 is concave to form, and the both ends of first annular 17 run through the side surface of lower bolster 2, and first annular 17 sets up around first through-hole 5 and lower mould core 4. In the use process of the injection mold core, heat preservation liquid or cooling liquid can be introduced into the first ring groove 17, for example, in the process of injection molding of a workpiece, the heat preservation liquid is introduced into the first ring groove 17, the temperature of the lower template 2 and the lower mold core 4 is ensured by using the heat of the heat preservation liquid, and the phenomenon that the injection molding is poor due to the fact that the molten plastic injected into the accommodating gap, the annular gap, the first groove body 11 and the second groove body 16 is denatured when being cooled is avoided. After the work piece is moulded plastics and is accomplished, can also let in the coolant liquid in first annular 17, utilize the coolant liquid to carry out rapid cooling to the work piece of lower bolster 2 and lower mould core 4, promote the shaping efficiency of work piece. The upper die plate 1 is provided with a second annular groove 18, the second annular groove 18 is formed by being concavely arranged on the upper surface of the upper die plate 1, two ends of the second annular groove 18 penetrate through the side surface of the upper die plate 1, and the second annular groove 18 is arranged around the second through hole 8 and the upper die core 3.
The lower mold core 4 is provided with a plurality of ejection holes 19, the ejection holes 19 penetrate through the lower mold core 4, the ejection holes 19 are communicated with the accommodating gaps, and the ejection holes 19 are annularly arrayed around the central axis of the cylinder 7. When the injection molding machine is actually used, each ejection hole 19 is provided with an ejector pin in a sliding mode, after a workpiece is subjected to injection molding, the die core is opened, then an external driving mechanism drives the ejector pins to slide in the ejection holes 19, and the sliding ejector pins are abutted against the top wall of the workpiece in the accommodating gaps, so that the workpiece is ejected; because the reinforcing ribs formed on the first groove body 11 and the second groove body 16 are connected with the top wall of the workpiece, compared with the position where the thimble props against the workpiece and the strength of the workpiece is lower, the thimble props against the top wall of the workpiece to push the workpiece out, and the workpiece can be effectively prevented from being damaged when being taken out.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. An improvement formula mold core which characterized in that: the lower die core is provided with a ring platform and a cylinder connected with the ring platform, the ring platform is used for abutting against the lower surface of the lower die plate, the cylinder protrudes into the first through hole, and an annular gap for forming the side wall of a workpiece is formed between the side surface of the cylinder and the hole wall of the first through hole; the upper mold core is abutted against the upper surface of the lower mold plate, the upper mold core is provided with an accommodating blind hole communicated with the annular gap, and an accommodating gap for forming the top wall of the workpiece is formed between the bottom wall of the accommodating blind hole and the end surface of the free end of the cylinder; the lower surface of the upper template is used for abutting against the upper surface of the lower template, the lower template is provided with a second through hole penetrating through the lower template, and the upper die core is accommodated in the second through hole; the upper mold core is provided with a plurality of first injection holes which are respectively communicated with the accommodating gaps, and the first injection holes are arranged around the central axis of the upper mold core in a concentric ring manner; the cylinder is equipped with first cell body, and first cell body is established from the terminal surface of cylindrical free end recess and is formed, and the both ends of first cell body communicate annular clearance respectively.
2. The improved mold core of claim 1, wherein: the upper mold core is provided with a central injection hole, the central injection hole is positioned in the center of the upper mold core, the upper mold core is provided with a plurality of first flow channels, the first flow channels are formed by concave arrangement of the upper surface of the upper mold core, the first flow channels correspond to the first injection holes one by one, and the first injection holes are communicated with the central injection hole through the first flow channels.
3. The improved mold core of claim 2, wherein: the upper mold core is provided with a plurality of second injection holes which are respectively communicated with the accommodating gaps, the second injection holes are arranged in a concentric ring mode around the central axis of the upper mold core, and the distance between the first injection hole and the central injection hole is larger than the distance between the second injection hole and the central injection hole.
4. The improved mold core of claim 3, wherein: the upper mold core is provided with a plurality of second runners, the second runners are formed by concave arrangement of the upper surface of the upper mold core, the second runners correspond to the second injection holes one by one, the second injection holes are communicated with the central injection hole through the second runners, and the width of the first runners is larger than that of the second runners.
5. The improved mold core of claim 2, wherein: the cylinder is equipped with the second cell body, and the second cell body is established from the terminal surface of cylindrical free end recess and is formed, and the both ends of second cell body communicate annular gap respectively, and first cell body sets up with the second cell body is perpendicular.
6. The improved mold core of claim 5, wherein: the number of the first groove bodies is two, the two first groove bodies are arranged in parallel, the number of the second groove bodies is two, the two second groove bodies are arranged in parallel, the central injection hole is located between the two first groove bodies, and the central injection hole is located between the two second groove bodies.
7. The improved mold core of claim 1, wherein: the injection hole is conical, and the aperture of one end of the injection hole close to the accommodating gap is smaller than that of one end of the injection hole far away from the accommodating gap.
8. The improved mold core of claim 1, wherein: the lower bolster has first annular, and first annular is established from the lower surface of lower bolster concave, and the both ends of first annular run through the side surface of lower bolster, and first annular sets up around first through-hole and lower mould core.
9. The improved mold core of claim 1, wherein: the upper die plate is provided with a second annular groove, the second annular groove is formed by being concavely arranged on the upper surface of the upper die plate, two ends of the second annular groove penetrate through the side surface of the upper die plate, and the second annular groove is arranged around the second through hole and the upper die core.
10. The improved mold core of claim 1, wherein: the lower mold core is provided with a plurality of ejection holes, the ejection holes penetrate through the lower mold core, the ejection holes are communicated with the accommodating gaps, and the ejection holes are annularly arrayed around the central axis of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920119176.7U CN209832333U (en) | 2019-01-24 | 2019-01-24 | Improved mold core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920119176.7U CN209832333U (en) | 2019-01-24 | 2019-01-24 | Improved mold core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209832333U true CN209832333U (en) | 2019-12-24 |
Family
ID=68902394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920119176.7U Expired - Fee Related CN209832333U (en) | 2019-01-24 | 2019-01-24 | Improved mold core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209832333U (en) |
-
2019
- 2019-01-24 CN CN201920119176.7U patent/CN209832333U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109333926B (en) | A mould for making automobile-used audio amplifier apron | |
| CN209832333U (en) | Improved mold core | |
| CN211221902U (en) | Injection mold pneumatically pushed out | |
| CN209832432U (en) | Improved injection mold | |
| CN211941865U (en) | One-mold double-outlet large-scale deep-cavity environmental sanitation plastic garbage can injection mold | |
| CN210100466U (en) | Injection mold core | |
| CN210910985U (en) | Yarn nozzle mould | |
| CN209257380U (en) | It is a kind of for manufacturing the mold of sound box for vehicle cover board | |
| CN211727425U (en) | Integral demolding and die-casting die with inner insert | |
| CN112792315A (en) | Lightweight valve body die casting die | |
| CN214773713U (en) | Angle pin ejection die | |
| CN210254162U (en) | Special-shaped flange die-casting die | |
| CN214773714U (en) | Ejection mold | |
| CN213645840U (en) | Lock shell processing is with easy ejecting casting mould | |
| CN214773608U (en) | Two-slider inner support die | |
| CN214773817U (en) | Double-slider die | |
| CN211467375U (en) | Injection mold capable of being cooled rapidly | |
| CN217454712U (en) | Mold for replacing mold core by loose piece assembly | |
| CN214000355U (en) | Hollow storage basket rapid injection mold | |
| CN212634261U (en) | Cast aluminum die of automobile steering seat shell | |
| CN220995306U (en) | Injection mold of storage tank shell | |
| CN212469704U (en) | Forming die of aluminium roller fixed block | |
| CN212636395U (en) | Clamping mechanism of injection molding machine | |
| CN213530712U (en) | Sport equipment belt pulley die casting die | |
| CN210308781U (en) | Conveniently change dirt box cover mould of mould benevolence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210124 |