CN213291135U - Silica gel injection mold - Google Patents
Silica gel injection mold Download PDFInfo
- Publication number
- CN213291135U CN213291135U CN202021246420.5U CN202021246420U CN213291135U CN 213291135 U CN213291135 U CN 213291135U CN 202021246420 U CN202021246420 U CN 202021246420U CN 213291135 U CN213291135 U CN 213291135U
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- CN
- China
- Prior art keywords
- injection mold
- cavity plate
- template
- plate
- silica gel
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- 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.)
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- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000000741 silica gel Substances 0.000 title claims abstract description 16
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 7
- 230000000994 depressogenic effect Effects 0.000 abstract description 4
- 239000011344 liquid material Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001746 injection moulding 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
- 238000007493 shaping process Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009349 indirect transmission Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of mold, concretely relates to silica gel injection mold, include: the upper template is molded with a pouring gate; the lower template is positioned below the upper template, and a concave part is arranged inside the lower template; heating structures are arranged inside the upper template and the lower template; and the cavity plate is arranged in the depressed part, a plurality of cavities are formed in the cavity plate, and the pouring gate is communicated with the cavities. The utility model provides a silica gel injection mold who is difficult for fracture.
Description
Technical Field
The utility model relates to the technical field of mold, concretely relates to silica gel injection mold.
Background
The silica gel injection mold is widely applied to the processing industry of plastic products, is a tool for producing plastic products, and is also a tool for endowing the products with complete structures and accurate sizes. The specific processing process comprises the following steps: and the liquid material flows into a cavity of the mold from the sprue bush, is heated by a heating device, is solidified and molded, and then a finished product is obtained.
However, when the existing injection mold is used, the liquid material needs to be heated, and the liquid material is gradually cured and molded in the reheating process, but because the heating temperature is too high, the liquid material cannot obtain a satisfactory finished product during curing and molding, and the cracking condition occurs, so that the yield of molded products is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming injection mold's among the prior art high temperature, leads to the defect that the finished product is easy to split to a silica gel injection mold who is difficult for the fracture is provided.
In order to solve the technical problem, the utility model provides a silica gel injection mold, include:
the upper template is molded with a pouring gate;
the lower template is positioned below the upper template, and a concave part is arranged inside the lower template; heating structures are arranged inside the upper template and the lower template;
and the cavity plate is arranged in the depressed part, a plurality of cavities are formed in the cavity plate, and the pouring gate is communicated with the cavities.
Further, the surface of the cavity plate and the surface of the lower template are positioned on the same horizontal plane.
Furthermore, a flow guide channel is arranged on the surface of the cavity plate; the flow guide channel comprises a main flow channel and branch flow channels, and the branch flow channels are respectively communicated with the cavities.
Further, the branch flow channel is X-shaped.
Furthermore, a groove is formed in the lower template, and a sealing ring is arranged in the groove.
Further, the heating structure is an electric heating tube.
Further, the ejection mechanism is used for ejecting the cavity plate.
Further, the ejection structure includes: one end of the ejection rod extends into the lower template and is fixedly connected with the cavity plate, and the other end of the ejection rod is provided with a fixed block; the elastic piece is sleeved on the peripheral wall of the ejection rod.
Furthermore, a through hole communicated with the concave part is formed in the side wall of the lower template.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a silica gel injection mold, include: the upper template is molded with a pouring gate; the lower template is positioned below the upper template, and a concave part is arranged inside the lower template; heating structures are arranged inside the upper template and the lower template; and the cavity plate is arranged in the depressed part, a plurality of cavities are formed in the cavity plate, and the pouring gate is communicated with the cavities.
Set up the die cavity board through the inside at the lower bolster, set up the die cavity on the die cavity board again, when heating structure heats the lower bolster, can directly heat the die cavity board, the heat passes through the liquid material of die cavity board in indirect transmission for the die cavity, make the liquid material of die cavity be heated more evenly, thereby avoided directly setting up the die cavity on the lower bolster, the temperature that makes the die cavity is too high, lead to the condition that the fracture appears in the fashioned in-process in the liquid material, influence the shaping quality and the yield of liquid material in the die cavity. Compared with the prior art, the die directly heats the liquid material, effectively ensures the quality of the product, improves the forming rate of the product and improves the processing efficiency.
2. The utility model provides a silica gel injection mold be equipped with the recess on the lower bolster, be equipped with the sealing washer in the recess, guaranteed that the depressed part after the evacuation is inside to be in sealed state completely. The air is prevented from entering, bubbles are prevented from appearing on the surface of the formed product, and the forming quality of the product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a silica gel injection mold provided by the present invention;
FIG. 2 is a cross-sectional view of the lower platen of FIG. 1;
fig. 3 is a schematic structural view of the lower template in fig. 1.
Description of reference numerals:
1-upper template; 2-a pouring gate; 3-a lower template; 4-a recess; 5-a cavity plate; 6-molding the cavity; 7-a groove; 8-sealing ring; 9-a flow guide channel; 10-a main flow channel; 11-branch flow channel; 12-a via hole; 13-a heating structure; 14-a support plate; 15-an ejection structure; 16-ejector pin; 17-fixing block; 18-an elastic member.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides a silica gel injection mold, including: the upper template 1 is molded with a pouring gate 2; the lower template 3 is positioned below the upper template 1, and a concave part 4 is arranged inside the lower template 3; heating structures 13 are arranged inside the upper template 1 and the lower template 3; and the cavity plate 5 is arranged in the concave part 4, a plurality of cavities 6 are formed on the cavity plate 5, and the pouring gate 2 is communicated with the cavities 6.
Set up die cavity board 5 through the inside at lower bolster 3, set up die cavity 6 on die cavity board 5 again, when heating structure 13 heats cope match-plate pattern 1 and lower bolster 3, can directly heat die cavity board 5, the heat passes through die cavity board 5 at indirect liquid material that transmits in die cavity 6, make the liquid material in the die cavity 6 be heated more evenly, thereby avoided directly setting up die cavity 6 on lower bolster 3, make die cavity 6's high temperature, lead to the condition that liquid material fracture appears in fashioned in-process, influence the shaping quality and the yield of liquid material in die cavity 6. Compared with the prior art, the die directly heats the liquid material, effectively ensures the quality of the product, improves the forming rate of the product and improves the processing efficiency.
As shown in fig. 3, in this embodiment, the surface of the cavity plate 5 and the surface of the lower mold plate 3 are located on the same horizontal plane, so that the upper mold plate 1 directly contacts with the cavity plate 5 in the lower mold plate 3, and when the heating structure 13 heats the upper mold plate 1 and the lower mold plate 3, heat directly acts on the cavity plate 5, thereby ensuring the heating efficiency. In the present embodiment, the heating structure 13 is an electric heating tube. The electric heating pipes are respectively arranged inside the upper template 1 and the lower template 3 in a circuitous mode. When the electric heating pipe is installed in the lower template 3, the electric heating pipe is positioned below the concave part 4 and between the supporting plate 14 at the bottom of the lower template 3.
As shown in fig. 2, a pouring gate 2 is arranged in the middle of an upper mold plate 1, liquid material enters a cavity plate 5 from the pouring gate 2, and the liquid material is conveyed into a cavity 6 through a flow guide channel 9 arranged on the surface of the cavity plate 5 for injection molding; the flow guide 9 includes a main flow channel 10 and branch flow channels 11, the liquid material flowing from the pouring gate 2 firstly flows into the main flow channel 10, the main flow channel 10 is filled with the liquid material and then is conveyed to each branch flow channel 11, and the branch flow channels 11 are respectively communicated with each cavity 6. In this embodiment, the branch flow channel 11 is X-shaped and is set according to the arrangement form of the actual cavity 6.
As shown in fig. 2, specifically, a groove 7 is formed in the lower template 3, and a seal ring 8 is arranged in the groove 7; meanwhile, a via hole 12 communicated with the concave part 4 is further formed in the side wall of the lower template 3, and the via hole 12 is connected with external vacuum pumping equipment, so that vacuum pumping treatment can be performed on the concave part 4.
After liquid materials enter a cavity 6 in a cavity plate 5 from a pouring gate 2, mold closing is started, when a distance of 2mm is reserved between an upper template 1 and a lower template 3, vacuumizing treatment is performed through vacuumizing equipment, all air in a concave part 4 is pumped away, meanwhile, air in each cavity 6 needs to be pumped away, and then the upper template 1 and the lower template 3 are used for rapidly closing the mold. The arrangement of the sealing ring 8 ensures that the interior of the vacuumized concave part 4 is completely in a sealed state. And the liquid material is heated and solidified, so that bubbles are prevented from appearing on the surface of the formed product, and the forming quality of the product is improved.
Meanwhile, the silica gel injection mold further comprises an ejection structure 15 for ejecting the cavity plate 5, wherein the ejection structure 15 comprises an ejection rod 16, and one end of the ejection rod 16 extends into the lower mold plate 3 and is fixedly connected with the cavity plate 5; the ejection rods 16 are four and symmetrically arranged, and the other end of each two ejection rods 16 is provided with a fixed block 17, so that the two ejection rods 16 are connected into an integral structure; and an elastic member 18 fitted around the outer peripheral wall of the ejector rod 16. In this embodiment, the elastic member 18 is a spring. When the product needs to be taken out, the ejector rod 16 is pushed to move towards the upper template 1, namely the elastic piece 18 is compressed, so that the cavity plate 5 is pushed out, and the product is taken out; the force applied to the ejector rod 16 is removed, so that the ejector rod 16 is released by the elastic member 18, and the ejector rod 16 and the cavity plate 5 are restored to the initial positions by the restoring force of the elastic member 18, thereby completing the removal of the product.
The specific operation process comprises the following steps: pouring liquid materials into the silica gel injection mold through the pouring gate 2, enabling the liquid materials to enter the cavity 6 through the flow guide channel 9, then starting mold closing, and when a distance of 2mm is reserved between the upper template 1 and the lower template 3, vacuumizing the concave part 4 through vacuumizing equipment, directly pumping away all air, and then completely closing the mold; the liquid material is heated and solidified through the heating structure 13, the solidified product is ejected through the ejection structure 15, and after the product is taken out, the next injection molding is carried out.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A silica gel injection mold is characterized by comprising:
the upper template (1) is molded with a pouring gate (2);
the lower template (3) is positioned below the upper template (1), and a concave part (4) is arranged inside the lower template (3); heating structures (13) are arranged inside the upper template (1) and the lower template (3);
the cavity plate (5) is arranged in the concave part (4), a plurality of cavities (6) are formed in the cavity plate (5), and the pouring gate (2) is communicated with the cavities (6).
2. The silicone injection mold of claim 1, wherein the surface of the cavity plate (5) and the surface of the lower mold plate (3) are located on the same horizontal plane.
3. A silicone injection mold according to claim 2, wherein a flow guide (9) is provided on the surface of the cavity plate (5); the flow guide channel (9) comprises a main flow channel (10) and branch flow channels (11), and the branch flow channels (11) are respectively communicated with the cavities (6).
4. A silicone injection mold according to claim 3, wherein the branch runners (11) are X-shaped.
5. The silica gel injection mold according to claim 1, wherein a groove (7) is formed in the lower mold plate (3), and a sealing ring (8) is arranged in the groove (7).
6. A silicone injection mold according to any one of claims 1-5, wherein the heating structure (13) is an electric heating tube.
7. A silicone injection mold according to claim 6, further comprising an ejection structure (15) for ejecting the cavity plate (5).
8. A silicone injection mold according to claim 7, wherein the ejection structure (15) comprises:
one end of the ejector rod (16) extends into the lower template (3) and is fixedly connected with the cavity plate (5), and the other end of the ejector rod is provided with a fixed block (17);
and the elastic piece (18) is sleeved on the peripheral wall of the ejection rod (16).
9. The silicone injection mold of claim 1, wherein a via hole (12) communicating with the recess (4) is further formed in the sidewall of the lower mold plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021246420.5U CN213291135U (en) | 2020-06-29 | 2020-06-29 | Silica gel injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021246420.5U CN213291135U (en) | 2020-06-29 | 2020-06-29 | Silica gel injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213291135U true CN213291135U (en) | 2021-05-28 |
Family
ID=76018817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021246420.5U Active CN213291135U (en) | 2020-06-29 | 2020-06-29 | Silica gel injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213291135U (en) |
-
2020
- 2020-06-29 CN CN202021246420.5U patent/CN213291135U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Zone A and B, 1st Floor, Building 2, No. 925 Jinyuan 1st Road, Jiading District, Shanghai, March 2018 Patentee after: Shanghai Yingtai Medical Device Automation Co.,Ltd. Country or region after: China Address before: 201803 area a, 1 / F, building 2, No. 925, Jinyuan 1st Road, Jiading District, Shanghai Patentee before: SHANGHAI KANGDELAI MEDICAL DEVICE AUTOMATION RESEARCH INSTITUTE CO.,LTD. Country or region before: China |