CN210061838U - BMC cold runner mould - Google Patents
BMC cold runner mould Download PDFInfo
- Publication number
- CN210061838U CN210061838U CN201920860053.9U CN201920860053U CN210061838U CN 210061838 U CN210061838 U CN 210061838U CN 201920860053 U CN201920860053 U CN 201920860053U CN 210061838 U CN210061838 U CN 210061838U
- Authority
- CN
- China
- Prior art keywords
- cold runner
- runner
- bmc
- needle
- cold
- 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.)
- Active
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a BMC cold runner mould relates to BMC injection moulding technical field, including the cover half, be equipped with the cold runner on the cover half, the feed inlet of cold runner is located cover half one side, the cold runner includes sprue and each grade subchannel, the sprue is terminal to be divided into two and forms two one-level subchannels along the sprue symmetry, every one-level subchannel end is divided into two and forms two second grade subchannels of symmetry, every second grade subchannel end is divided into two and forms two tertiary subchannels of symmetry, the end of every tertiary subchannel is equipped with the discharge opening, handing-over department between each grade runner is the arc transition, the distance of the runner between feed inlet to each discharge opening is the same and form the runner that has the multichannel arc and turn. The cold runner with the special shape ensures that the impact force of BMC glue stock flowing in the cold runner is smaller on the wall of the cold runner, and the plurality of arc-shaped turns lead the material flow to be disordered and the glass fibers to be diffused, reduce the orientation and enhance the random distribution of the glass fibers.
Description
Technical Field
The utility model relates to a BMC injection moulding technical field especially relates to a BMC cold runner mould.
Background
The BMC material is an abbreviation of Bulk molding compounds, namely Bulk molding compound, and is commonly called unsaturated polyester Bulk molding compound in China. BMC is a special unsaturated polyester thermosetting hardening resin, is compounded from chopped glass fiber, carbon fiber powder and vinyl resin, has excellent electrical insulation property, heat resistance, flame resistance, high mechanical strength, size stability, corrosion resistance, water resistance, shrinkage stability and the like, and is the highest-grade product in various thermosetting hardening molding materials. The glass fiber has length of 6-12mm, length of 25mm, and the product has high resistance, moisture resistance and small shrinkage rate, and may be used in producing thick product, electronic industry, household appliance, casing, etc.
BMC can be molded by compression molding or injection molding, and the existing BMC injection molding technology has many defects:
1. the traditional injection molding process adopts a hot runner system, a very long stub bar can be generated, and the stub bar cannot be recycled, so that the material waste is caused, and the cost is increased.
2. The strength of the injection molded BMC article is lower than that of the compression molded BMC article due to severe glass fiber damage or induced glass fiber orientation in the entire runner system of the BMC from the nozzle to the mold cavity.
3. When water flow is input to a junction of a double-spiral water path from one spiral water path, the water flow cannot be ideally output from the other spiral water path, but a part of the water flow returns back along the original path, so that the temperature of the needle valve nozzle is possibly too high, and the problems of glue shortage, small size, thick thickness, deformation, easy breakage, difficult edge dismantling and the like of a product are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a BMC cold runner mould does not produce the stub bar, and material saving saves the expense such as manpower, material resources, vehicle damage of clearance stub bar, avoids environmental pollution.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a BMC cold runner mould, which comprises a fixed die, be equipped with the cold runner on the cover half, the feed inlet of cold runner is located cover half one side, the cold runner includes sprue and each grade subchannel, the sprue is divided into two at the end and is formed two one-level subchannels along the sprue symmetry, every one-level subchannel is divided into two at the end and is formed two second grade subchannels of symmetry, every second grade subchannel is divided into two at the end and is formed two tertiary subchannels of symmetry, the end of every third grade subchannel is equipped with the discharge opening, handing-over department between each grade runner is the arc transition, the distance of the runner between feed inlet to each discharge opening is the same and form the runner that has multichannel arc turning.
Further, a needle valve nozzle is arranged below each discharge hole, the needle valve nozzle comprises a nozzle core, a nozzle sleeve sleeved on the nozzle core and a needle movably penetrating in the nozzle core, an injection channel for liquid rubber to pass through is arranged in the nozzle core, a first spiral water path and a second spiral water path which have the same rotation direction and a first spiral thread and a second spiral thread which isolate the first spiral water path and the second spiral water path are arranged on the outer wall of the nozzle core, the bottom of the first spiral water path is communicated with the bottom of the second spiral water path, a water flow intersection turning-back area is formed at the communication position of the first spiral water path and the second spiral water path, a blocking part is arranged from the bottom of the water flow intersection turning-back area to the first spiral thread in an extending manner, the blocking part is abutted against the lower end of the first spiral thread, the lower end of the second spiral thread is a free end, the lower end of the second spiral thread extends to the turning-back edge of the water flow intersection, the water flow input by the first spiral water channel or the second spiral water channel is turned back and output from the other spiral water channel after being blocked by the blocking part.
Further, the cover half includes cold runner mainboard and cold runner apron, all is equipped with the recess on cold runner mainboard and the cold runner apron, and the recess on the cold runner mainboard and the recess combination on the cold runner apron form the cold runner of this mould, the feed inlet set up at the lateral wall of cold runner mainboard and cold runner apron, the discharge opening sets up on the cold runner mainboard.
Furthermore, a temperature sensor is arranged on the cold runner main board and/or the cooling cover plate.
Further, the cover half still includes the cooling mainboard, the cooling apron, needle fixed plate and needle push pedal, the cooling plate is equipped with the storage tank, cold runner mainboard and cold runner apron are arranged in the storage tank, the cooling apron is fixed with the cooling plate and is sealed the storage tank opening and fix in the storage tank with cold runner mainboard and cold runner apron, the upper end of each needle passes cold runner mainboard and cold runner apron and is fixed by needle fixed plate and needle push pedal, needle fixed plate and needle push pedal mutually support each needle of drive and reciprocate in step with the injection flow of control needle valve nozzle.
Furthermore, a plurality of cooling water channels are arranged on the cooling main board, the cold runner main board and the cold runner cover, and the first spiral water channel and the second spiral water channel which are positioned on the same nozzle core are communicated with the same cooling water channel.
Furthermore, a fixed template and a mold core are arranged below the cooling main board, a groove is formed in the fixed template, the mold core is accommodated in the groove of the fixed template, and mold cavities communicated with the needle valve nozzles in a one-to-one correspondence mode are formed in the mold core.
Furthermore, a heating pipe is arranged in the fixed die plate, and a heat insulation plate is arranged between the fixed die plate and the cold runner main plate.
Furthermore, the lower end surface of the valve needle is a plane.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses handing-over department between the runners at different levels of mould is the arc transition, the distance of the runner between feed inlet to each discharge opening is the same and form the runner that has the multichannel arc and turn round, the cold runner of this kind of special shape makes the BMC sizing material that flows in it less to the impact force of cold runner wall, the multichannel arc turns round and makes the material stream chaotic, fine diffusion of glass, reduce orientation, the fine random distribution of reinforcing glass, so the homogeneity and the compactness of goods are higher, remaining internal stress is less, intensity is higher.
2. Through the structure improvement to the double helix water route of mouth core, the cooling water is inputed to rivers from a water route and is blocked and forced to export from another water route after the direction by the portion of blocking when turning back the region in intersection to abundant cooling mouth core guarantees that the sizing material before getting into the die cavity is in even normal atmospheric temperature state, and the cooling effect is good.
3. The sizing material staying in the cold runner cavity is controlled below the curing temperature, only the product is removed during demolding, the sizing material in the cold runner is still remained in the cold runner, and the sizing material in the cold runner is injected into the mold cavity to form the product during next injection, so that the waste of raw materials is reduced, the energy is saved, and the mold opening distance can be reduced, the molding period is shortened, the cost is saved, and the production efficiency is improved because no runner waste material is generated during demolding of the product. The BMC is in a blank state in China and runs at the front of history of the industry, so that the labor, material and vehicle loss for treating solid wastes are saved, and the environmental pollution is avoided.
4. The mould adopts a needle valve nozzle, and each valve needle is synchronously driven by a valve needle fixing plate and a valve needle push rod, so that the balance is ensured, and the size deviation of multi-cavity forming can be reduced.
5. The utility model provides a mould has eight die cavities, and after the runner technology change, 25g raw and other materials are saved to every die cavity, and every injection moulding once will save waste material 200g, through calculating, saves about 0.2 yuan of cost around comparing to improve, according to the calculation of 800 ten thousand platforms of production order every year, can save about 160 ten thousand yuan every year.
Drawings
Fig. 1 is a fixed mold of a BMC cold runner mold according to an embodiment of the present invention;
fig. 2 is a top view of a cold runner main board according to an embodiment of the present invention;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is a schematic perspective view of a mouth core according to an embodiment of the present invention;
fig. 6 is another angular view of fig. 5.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The utility model provides a BMC cold runner mould is injection moulding mould, including cover half and movable mould. The mold is arranged on a BMC injection molding machine, and BMC materials are filled into the mold through an injection machine.
Referring to fig. 1 to 6, a BMC cold runner mold includes a fixed mold, a cold runner is disposed on the fixed mold, a feed inlet 101 of the cold runner is located on one side of the fixed mold, the cold runner includes a main runner 102 and sub-runners at different levels, the end of the main runner 102 is divided into two to form two first-level sub-runners 103 symmetrical along the main runner 102, the end of each first-level sub-runner 103 is divided into two to form two second-level sub-runners 104 symmetrical, the end of each second-level sub-runner 104 is divided into two to form two third-level sub-runners 105 symmetrical, a discharge hole 106 is disposed at the end of each third-level sub-runner 105, a joint between the runners at different levels is in arc transition, and the distance between the feed inlet 101 and each discharge hole 106 is the same and a runner with a plurality.
The joints of the runners at all levels are in arc transition, the distance between the feed inlet 101 and the runners between the discharge holes 106 is the same, and the runners with multiple arc turning are formed, the cold runner with the special shape enables BMC glue flowing in the cold runner to have smaller impact force on the wall of the cold runner, the multiple arc turning enables material flow to be disordered, glass fibers to be diffused, orientation is reduced, random distribution of the glass fibers is enhanced, uniformity and compactness of products are higher, residual internal stress is smaller, and strength is higher.
It should be understood by those skilled in the art that the specific shape of the cold runner disclosed in this embodiment is related to the specific number of the cavities, and in other embodiments, the shape of the main runner 102 is adaptively changed due to the increase or decrease of the number of the cavities, as long as the arc transition is ensured at the junction between the runners of each stage, the distance between the feed opening 101 and each discharge opening 106 is the same, and a runner with a plurality of arc turns is formed, so as to achieve the above technical effect.
Referring to fig. 4 to 6, in the present embodiment, a needle valve nozzle is disposed below each discharge hole 106, the needle valve nozzle includes a nozzle core 107, a nozzle sleeve 108 covering the nozzle core 107, and a valve needle 109 movably penetrating through the nozzle core 107, an injection channel for passing liquid rubber is disposed in the nozzle core 107, a first spiral water path 1071 and a second spiral water path 1072 having the same rotation direction and a first spiral grain 1073 and a second spiral grain 1074 isolating the first spiral water path 1071 and the second spiral water path 1072 are disposed on an outer wall of the nozzle core 107, a water flow intersection return region 1075 is formed at a communication position of the first spiral water path 1071 and the second spiral water path 1072, a blocking portion 1076 extends from a bottom of the water flow return intersection region 1075 toward the first spiral grain 1073, the blocking portion 1076 abuts against a lower end of the first spiral grain 1073, and a lower end of the second spiral grain 1074 is a free end, the lower end of the second spiral groove 1074 extends to the edge of the water flow intersection turning region 1075 and has a certain distance from the blocking portion 1076, and the water flow inputted from the first spiral water path 1071 or the second spiral water path 1072 is turned back and outputted from the other spiral water path after being blocked by the blocking portion 1076. The cooling water may be input from the first water passage 1071 and output from the second water passage 1072, or may be input from the second water passage 1072 and output from the first water passage 1071.
Through the structure to the double helix water route of mouth core 107 improving, cooling water is inputed to rivers intersection when turning back region 1075 from a water route and is stopped by department 1076 and forced to follow another water route output after the direction to abundant cooling mouth core 107 guarantees that the sizing material before getting into the die cavity is in even normal atmospheric temperature state, prevents that the sizing material from solidifying too much, and the cooling effect is good.
Referring to fig. 2, the fixed mold includes a cold runner main plate 10 and a cold runner cover plate 20, both the cold runner main plate 10 and the cold runner cover plate 20 are provided with grooves, the grooves on the cold runner main plate 10 and the grooves on the cold runner cover plate 20 are combined to form a cold runner of the mold, a feed inlet 101 is opened on the side walls of the cold runner main plate 10 and the cold runner cover plate 20, and a discharge hole 106 is provided on the cold runner main plate 10.
Referring to fig. 1, 3 and 4, the fixed mold further includes a cooling main plate 30, a cooling cover plate 40, a valve needle fixing plate 50 and a valve needle pushing plate 60, the cooling main plate 30 is provided with an accommodating groove, the cold runner main plate 10 and the cold runner cover plate 20 are disposed in the accommodating groove, the cooling cover plate 40 is fixed to the cooling main plate 30 by screws, the cooling cover plate 40 closes an opening of the accommodating groove to fix the cold runner main plate 10 and the cold runner cover plate 20 in the accommodating groove, an upper end portion of each valve needle 109 passes through the cold runner main plate 10 and the cold runner cover plate 20 and is fixed by the valve needle fixing plate 50 and the valve needle pushing plate 60, the valve needle fixing plate 50 and the valve needle pushing plate 60 are fixed together by screws, and the valve needle fixing plate 50 and the valve needle pushing plate 60 cooperate. The valve needles 109 are synchronously driven by the valve needle fixing plate 50 and the valve needle push plate 60, so that the valve needles are well balanced, and dimensional deviation of multi-cavity molding can be reduced.
Referring to fig. 1 and 4, a plurality of cooling channels 80 are disposed on the cooling main plate 30, the cold runner main plate 10 and the cold runner cover plate 20, and the first spiral water channel 1071 and the second spiral water channel 1072 on the same nozzle core 107 are communicated with the same cooling channel 80. A fixed mold plate 70 and mold inserts (not shown in the drawing) are arranged below the cooling main plate 30, a groove is arranged on the fixed mold plate 70, the mold inserts are accommodated in the groove of the fixed mold plate 70, and mold cavities communicated with the needle valve nozzles in a one-to-one correspondence manner are arranged in the mold inserts. A heating tube is provided in the stationary platen 70 to cure the glue in the cavity. An insulating plate 90 is arranged between the fixed die plate 70 and the cold runner main plate 10.
In order to accurately monitor the temperature of the glue in the cold runner, a temperature sensor is preferably disposed on the cold runner main plate 10 or the cooling cover plate 40, and more preferably, a temperature sensor is disposed on both the cold runner main plate 10 and the cooling cover plate 40, so as to obtain a more accurate temperature value. The mold is provided with a temperature control system, a temperature sensor is connected with the temperature control system through a signal circuit, and specific temperature data can be read in a temperature control box, so that the temperature of the mold is ensured to be in a reasonable range.
The BMC material is large in molecular weight, after injection operation is finished, the rubber material outlet is fine, the surface tension of the rubber material is generally large, so that the rubber material in an injection channel cannot flow out of the rubber material outlet, waste is avoided, blockage can be caused at the nozzle of the needle valve, the blockage can be pushed out by controlling the valve needle 109 to move up and down, and preferably, the lower end face of the valve needle 109 is arranged to be a plane, so that damage to the BMC molecular structure is reduced when the blocked rubber material is pushed out.
The sizing material staying in the cold runner cavity is controlled below the curing temperature, the product is only removed during demolding, the sizing material in the cold runner is still remained in the cold runner, and the sizing material in the cold runner is injected into the mold cavity to form the product during the next injection, so that the waste of raw materials is reduced, the energy is saved, and the mold opening distance can be reduced, the molding period is shortened, the cost is saved, and the production efficiency is improved because no runner waste material is generated during demolding of the product. Compare with traditional hot runner injection molding process, the utility model provides a mould becomes no stub bar automated production to BMC's stub bar production, truns into cold runner injection moulding by thermoforming, at internal blank state that belongs to, walks to save and handle solid useless manpower, material resources, vehicle loss etc. at the historical front edge of trade, avoids environmental pollution.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (9)
1. The utility model provides a BMC cold runner mould, includes the cover half, its characterized in that: the fixed die is provided with a cold runner, a feed inlet of the cold runner is positioned on one side of the fixed die, the cold runner comprises a main runner and all levels of sub-runners, the tail end of the main runner is divided into two parts to form two first-level sub-runners symmetrical along the main runner, the tail end of each first-level sub-runner is divided into two parts to form two symmetrical second-level sub-runners, the tail end of each second-level sub-runner is divided into two parts to form two symmetrical third-level sub-runners, the tail end of each third-level sub-runner is provided with a discharge hole, the joint between all levels of runners is in arc transition, the distance from the feed inlet to the runners between all levels of discharge holes is the.
2. The BMC cold runner mold of claim 1, wherein: each discharge opening below all disposes a needle valve nozzle, needle valve nozzle includes the mouth core, overlaps the nozzle cover and the activity of establishing on the mouth core and wears the needle of arranging in the mouth core in, be provided with the injection passage that can supply liquid sizing material to pass through in the mouth core, be equipped with on the outer wall of mouth core and revolve to the same first spiral water route and second spiral water route and keep apart first spiral thread and the second spiral thread in first spiral water route and second spiral water route, the bottom in first spiral water route and the bottom in second spiral water route are linked together, the intercommunication department between them forms rivers region of turning back, turn back from rivers and set up a barrier section towards first spiral thread extension in the bottom in region of turning back, this barrier section and the lower extreme butt of first spiral thread, the lower extreme of second spiral thread is the free end, the lower extreme of second spiral thread extends to rivers and turns back regional edge and has certain distance with the barrier section in intersection, turn back from another spiral thread after the rivers of being blocked by first spiral water route or the input of second spiral water route are blocked section and are And (5) outputting the rotary water path.
3. The BMC cold runner mold of claim 2, wherein: the cover half includes cold runner mainboard and cold runner apron, all is equipped with the recess on cold runner mainboard and the cold runner apron, the recess on the cold runner mainboard and the recess combination on the cold runner apron form the cold runner of this mould, the feed inlet set up at the lateral wall of cold runner mainboard and cold runner apron, the discharge opening sets up on the cold runner mainboard.
4. The BMC cold runner mold of claim 3, wherein: and a temperature sensor is arranged on the cold runner main board and/or the cooling cover plate.
5. The BMC cold runner mold of claim 3, wherein: the cover half is still including the cooling mainboard, the cooling cover board, needle fixed plate and needle push pedal, the cooling plate is equipped with the storage tank, cold runner mainboard and cold runner apron are arranged in the storage tank, the cooling cover board is fixed with the cooling plate and is sealed the storage tank opening and fix in the storage tank with cold runner mainboard and cold runner apron, the upper end of each needle passes cold runner mainboard and cold runner apron and is fixed by needle fixed plate and needle push pedal, needle fixed plate and needle push pedal mutually support each needle of drive and reciprocate in step with the injection flow of control needle valve nozzle.
6. The BMC cold runner mold of claim 5, wherein: the cooling main board, the cold runner main board and the cold runner cover are all provided with a plurality of cooling water channels, and a first spiral water channel and a second spiral water channel which are positioned on the same nozzle core are communicated with the same cooling water channel.
7. The BMC cold runner mold of claim 5, wherein: and a fixed template and a die core are arranged below the cooling main board, a groove is formed in the fixed template, the die core is accommodated in the groove of the fixed template, and a cavity communicated with each needle valve nozzle in a one-to-one correspondence manner is formed in the die core.
8. The BMC cold runner mold of claim 7, wherein: the fixed die plate is internally provided with a heating pipe, and a heat insulation plate is arranged between the fixed die plate and the cold runner main plate.
9. The BMC cold runner mold of claim 2, wherein: the lower end surface of the valve needle is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860053.9U CN210061838U (en) | 2019-06-10 | 2019-06-10 | BMC cold runner mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920860053.9U CN210061838U (en) | 2019-06-10 | 2019-06-10 | BMC cold runner mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210061838U true CN210061838U (en) | 2020-02-14 |
Family
ID=69456855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920860053.9U Active CN210061838U (en) | 2019-06-10 | 2019-06-10 | BMC cold runner mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210061838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113660824A (en) * | 2021-06-30 | 2021-11-16 | 杭州长川科技股份有限公司 | Cooling structure, pressure head assembly and test equipment |
| CN115008693A (en) * | 2022-01-14 | 2022-09-06 | 台州学院 | Cold runner molding method of PEEK high-end bearing plastic retainer |
-
2019
- 2019-06-10 CN CN201920860053.9U patent/CN210061838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113660824A (en) * | 2021-06-30 | 2021-11-16 | 杭州长川科技股份有限公司 | Cooling structure, pressure head assembly and test equipment |
| CN115008693A (en) * | 2022-01-14 | 2022-09-06 | 台州学院 | Cold runner molding method of PEEK high-end bearing plastic retainer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210061838U (en) | BMC cold runner mould | |
| CN102145530A (en) | Hot runner system and gas spring type nozzle thereof | |
| CN210477670U (en) | Plastic mold for hot runner of storage battery cover | |
| CN102476435A (en) | Process and mold for gas-assisted injection molding of car bumper | |
| CN203650845U (en) | Hot runner three-plate mold | |
| CN103192500A (en) | Mold for injection molding of television surface casing | |
| CN210436528U (en) | Mold for manufacturing garbage can | |
| CN208514895U (en) | A kind of double injection hole injection molding machines | |
| CN207224489U (en) | One kind is spoken out of turn core side gate type hot mouth | |
| CN219338417U (en) | Feed-in glue injection molding runner structure | |
| CN111331793A (en) | Hot runner structure, injection mold and injection molding method | |
| CN201913789U (en) | Extrusion die head for processing sectional material with plastic liner | |
| CN213227304U (en) | Sandwich injection molding assembly for injection mold | |
| CN210061833U (en) | Precise injection mold with hot runner system | |
| CN210148640U (en) | Double-color mold capable of controlling sliding block to enter and exit | |
| CN211074527U (en) | Lower die core structure for injection mold of household relay base plate | |
| CN213291235U (en) | Heat-insulation energy-saving injection mold | |
| CN219360142U (en) | Cold runner forming structure | |
| CN214000411U (en) | Gating system of copper bar injection mold | |
| CN219667328U (en) | Long tube type product pouring module | |
| CN203510609U (en) | Side glue inlet hot nozzle | |
| CN219133103U (en) | Injection mold for processing rubber frame | |
| CN212021543U (en) | Injection mold for synchronous glue injection of two ends of pipe fitting | |
| CN214562578U (en) | Plaque injection mold in door | |
| CN210552720U (en) | Electronic product shell injection mold with guide structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |