CN212795769U - Special injection molding machine barrel of bakelite - Google Patents
Special injection molding machine barrel of bakelite Download PDFInfo
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- CN212795769U CN212795769U CN202021401262.6U CN202021401262U CN212795769U CN 212795769 U CN212795769 U CN 212795769U CN 202021401262 U CN202021401262 U CN 202021401262U CN 212795769 U CN212795769 U CN 212795769U
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- barrel
- bakelite
- barrel body
- temperature
- infusion groove
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Abstract
The utility model discloses a special injection molding machine barrel of bakelite, a serial communication port, including the barrel body, spiral helicine infusion groove is seted up along length direction to the surface of barrel body, the infusion groove set up in the position that the barrel body is close to the discharge gate, the infusion groove is through water takeover intercommunication mould temperature machine, and circulating liquid passes through mould temperature machine heating is to setting for the temperature after, the warp water takeover lets in the infusion groove, it is right the barrel body cools off. The utility model discloses a design of infusion groove can increase the homogeneity that liquid flows, reduces the mutual intercommunication of liquid, realizes the constant temperature of barrel body. Compared with the traditional winding copper tube type design: firstly, the copper pipe material is removed, and the manufacturing cost is reduced; secondly, copper pipe intervals are not formed, and the temperature of liquid transferred to the machine barrel is more accurate; thirdly, the infusion groove is designed inside the machine barrel, so that the appearance of the machine barrel is more attractive.
Description
Technical Field
The utility model relates to an injection molding machine technical field especially relates to a special injection molding machine barrel of bakelite.
Background
Bakelite is the first kind of plastics to be put into industrial production and is a popular name for plastics based on phenol resin (PF). It is common in our daily lives, for example: bakelite sockets, bakelite switches, bakelite spoon handles, bakelite handles, tissue boxes, kitchen benches, bakelite tea trays, and the like. The bakelite product has various excellent characteristics of no water absorption, no electricity conduction, high temperature resistance, high strength, high mechanical strength, good insulation, heat resistance, corrosion resistance and the like, so that the bakelite product is widely applied to the electrical industry and is also called as 'bakelite'. An important property of bakelite plastics: the molding temperature is 150 ℃ to 170 ℃, however, when the temperature exceeds 160 ℃, the fluidity is reduced linearly, and even if the temperature is slightly high, the curing is carried out. This important feature is the design key of the bakelite injection molding machine.
The design key points of the bakelite injection molding machine are as follows: when the bakelite powder is conveyed in the cylinder, the temperature of the cylinder needs to be kept constant or the temperature change amplitude needs to be minimized. The conventional method is to sleeve an oil jacket or wind a liquid guide copper pipe on a machine barrel, and the bakelite powder in the machine barrel is cooled by high-temperature liquid in the oil jacket or the liquid guide copper pipe, so that the method has the defect of uneven temperature, and higher defective rate.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims at providing a special injection molding machine barrel of bakelite, through set up circulation infusion tank on the barrel, the outside mold temperature machine heating liquid that adopts lets in the infusion tank with constant temperature liquid again, cools off bakelite powder and makes it keep constant temperature, solves the unstable problem of traditional bakelite injection molding machine heating, guarantees that bakelite powder can smooth and easy flow, realizes effectively moulding plastics.
In order to achieve the above object, the utility model discloses a technical scheme be: the utility model provides a special injection molding machine barrel of bakelite, includes the barrel body, spiral helicine infusion groove is seted up along length direction to the surface of barrel body, the infusion groove set up in the position that the barrel body is close to the discharge gate, the infusion groove is through water takeover intercommunication mould temperature machine, and circulating liquid passes through after the mould temperature machine heats to the settlement temperature, the warp water takeover lets in the infusion groove is right the barrel body cools off.
Through the arrangement, the design of the liquid conveying tank can increase the flowing uniformity of liquid and reduce the mutual communication of the liquid. Compared with the traditional winding copper tube type design: firstly, the copper pipe material is removed, and the manufacturing cost is reduced; secondly, copper pipe intervals are not formed, and the temperature of liquid transferred to the machine barrel is more accurate; thirdly, the infusion groove is designed inside the machine barrel, so that the appearance of the machine barrel is more attractive.
Furthermore, the bottom surface of the transfusion tank is provided with a smooth transitional arc surface.
Through the arrangement, the shape of the infusion groove is optimized, and the proportion of no liquid flow or slow liquid flow can be reduced by using the infusion groove with the arc-shaped bottom.
Furthermore, the sectional area of the liquid conveying tank is larger than that of the inner hole of the water connecting pipe.
Through the arrangement, as the constant-temperature liquid in the machine barrel is obtained from the mold temperature controller through the water connecting pipe, the sectional area of the inner hole of the water connecting pipe is the flowing area of the constant-temperature liquid, and in order to ensure that the constant-temperature liquid can continuously flow circularly, the sectional area of the liquid conveying tank is designed to be larger than the sectional area of the inner hole of the water connecting pipe.
Further, the groove width L of the transfusion groove is 1.2 times of the groove depth H.
Through the above arrangement, the shape and size of the transfusion tank are further optimized.
Furthermore, the liquid conveying tank is designed in a multi-section mode, and the multi-section liquid conveying tank is communicated with the mold temperature controller through the water connecting pipes respectively.
Through the arrangement, if the length of the screw rod is too long, the constant temperature liquid conveyed in the liquid conveying tank is too long in displacement, and therefore liquid temperature rise is generated. Therefore, the utility model designs the infusion tank into a multi-section structure, which can ensure that the temperature change of the liquid in the infusion tank is very small.
Further, one end of the liquid conveying groove extends to the foremost position of the machine barrel body close to the discharge hole.
Through the arrangement, the constant temperature of the machine barrel can be fully ensured. The design can best guarantee the conveying and plasticizing of the bakelite plastic, and an ideal effect is achieved.
The utility model has the advantages that: compared with the prior art, the design of the liquid conveying tank can increase the uniformity of liquid flow, reduce the mutual communication of the liquid and realize the constant-temperature heating of the machine barrel; the winding pipe is removed, so that the temperature of liquid transferred to the machine barrel is more accurate, the cost is reduced, and the appearance of the machine barrel is more attractive; the processing requirement and the precision requirement are simpler, and the processing period of the product can be shortened.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 2 is a partially enlarged view of the transfusion groove portion in fig. 1.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1, the utility model provides a special injection molding machine barrel of bakelite of embodiment, including barrel body 1, helical infusion groove 2 is seted up along length direction to the surface of barrel body 1, and infusion groove 2 connects through water and communicates the mould temperature machine, and circulating liquid heats to the settlement temperature after through the mould temperature machine, lets in infusion groove 2 through the water is taken over, cools off barrel body 1 and makes it keep constant temperature.
Referring to fig. 2, the bottom of the infusion groove 2 is designed to be a smooth transitional arc surface, which can reduce the proportion of non-flowing or slow flowing liquid; the sectional area of the liquid conveying tank 2 is larger than that of the inner hole of the water connecting pipe, the constant-temperature liquid in the machine barrel body 1 is obtained from the mold temperature controller through the water connecting pipe, the sectional area of the inner hole of the water connecting pipe is the flowing area of the constant-temperature liquid, and the sectional area of the liquid conveying tank 2 is designed to be larger than that of the inner hole of the water connecting pipe in order to ensure that the constant-temperature liquid can continuously flow circularly.
The conveying tank 2 is used as a thermostatic device (namely a cooling device) of the machine barrel body 1, and the bakelite plastic generates flow shearing in the conveying process in the machine barrel body 1 and generates heat. Depending on the properties of the bakelite, if the temperature is increased, the bakelite cures. Therefore, the utility model discloses a this point has been considered to the design of infusion tank 2, and the feed inlet position of barrel body 1 can not produce heat or the heat that produces is less, and this position can design one hydrologic cycle and cool down, designs the preceding, the position that is close to the discharge gate of hydrologic cycle with the infusion tank. Further, the transfusion tank 2 is extended to the foremost position of the cylinder body 1 close to the discharge port, so that the constant temperature of the cylinder body 1 can be fully ensured.
In addition, if the screw length is long and the displacement of the constant temperature liquid fed from the liquid feed tank 2 is too long, the temperature of the liquid rises depending on the designed length of the screw. Therefore, the utility model discloses divide into two sections with infusion groove 2: the first liquid conveying tank 2a and the second liquid conveying tank 2b are respectively communicated with the mold temperature controller through water connecting pipes, so that the temperature change of liquid in the liquid conveying tank 2 can be ensured to be as small as possible, the conveying and plasticizing of bakelite plastics can be best ensured, and an ideal effect is achieved.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a special injection molding machine barrel of bakelite, its characterized in that includes the barrel body, helical shape infusion groove is seted up along length direction to the surface of barrel body, infusion groove set up in the position that the barrel body is close to the discharge gate, infusion groove passes through water takeover intercommunication mould temperature machine, and circulating liquid passes through after the mould temperature machine heats to the settlement temperature, the warp water takeover lets in infusion groove is right the barrel body cools off.
2. The barrel of the bakelite special injection molding machine according to claim 1, wherein the bottom surface of the conveying tank is provided with a smooth transitional arc surface.
3. The barrel of the bakelite special injection molding machine according to claim 1, wherein the cross-sectional area of the conveying tank is larger than the cross-sectional area of the inner hole of the water connecting pipe.
4. The barrel of the bakelite special injection molding machine according to claim 1, wherein the width L of the conveying tank is 1.2 times the depth H of the tank.
5. The barrel of the injection molding machine special for bakelite according to claim 1, wherein the liquid conveying tank is designed in a multi-section mode, and the multi-section liquid conveying tank is communicated with the mold temperature controller through the water connecting pipes respectively.
6. The barrel of claim 1, wherein one end of the feed channel extends to a forwardmost position of the barrel body adjacent the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401262.6U CN212795769U (en) | 2020-07-15 | 2020-07-15 | Special injection molding machine barrel of bakelite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401262.6U CN212795769U (en) | 2020-07-15 | 2020-07-15 | Special injection molding machine barrel of bakelite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212795769U true CN212795769U (en) | 2021-03-26 |
Family
ID=75102722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021401262.6U Active CN212795769U (en) | 2020-07-15 | 2020-07-15 | Special injection molding machine barrel of bakelite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212795769U (en) |
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2020
- 2020-07-15 CN CN202021401262.6U patent/CN212795769U/en active Active
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