Water-cooling film head for processing silicon core pipe

Abstract

The utility model relates to the field of pipe blow molding, and particularly discloses a silicon core pipe processing water-cooling film head which comprises a connecting ring detachably connected with a mold and a cooling ring assembly, the cooling ring assembly comprises a fixing ring, and the fixing ring is coaxially connected with the connecting ring; the elastic refrigeration film ring is coaxially and fixedly mounted on the inner wall of the fixing ring; the diameters of the multiple cold conduction metal rings are different, and the cold conduction metal rings are attached to the inner ring of the refrigeration film ring and detachably connected with the inner ring of the refrigeration film ring; and the cooling water circulation unit is communicated with the refrigeration film ring. According to the scheme, when the specification of the silicon core pipe is changed, only the cold conduction metal ring needs to be replaced and installed at the refrigeration film ring, the cold conduction metal ring is convenient and easy to replace, the whole water cooling film head does not need to be replaced, and the cooling cost of different silicon core pipes is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe blow molding, in particular to a water-cooled die head for silicon core pipe processing. Background Art

[0002] A silicon core pipe (HDPE silicon core pipe) is a high-density polyethylene pipe with a layer of silica solid lubricant coated on its inner wall. Due to its excellent physical and mechanical properties and low friction coefficient, the silicon core pipe is widely used in optical cable communication network systems. The production process of the silicon core pipe includes steps such as raw material preparation, extrusion molding, on-line quality inspection, cooling, cutting, and packaging.

[0003] During the production process of the silicon core pipe, when the silicon core pipes are of different diameter specifications, different specifications of extrusion dies are used. At this time, the original cooling die head is difficult to match different specifications of dies, and it is also difficult for the cooling ring of the cooling die head to fit the outer wall of the silicon core pipe for efficient cooling. At this time, different specifications of cooling die heads need to be matched, resulting in an increase in the cooling cost of the silicon core pipe; when the same specification of cooling die head is used to cool silicon core pipes of different specifications, it is also easy to cause the silicon core pipe to be insufficiently cooled, or the outer wall of the silicon core pipe to be pressed by the cooling ring, resulting in poor forming accuracy of the silicon core pipe and affecting the quality of the silicon core pipe finished product. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a water-cooled die head for silicon core pipe processing to solve the problem that when processing silicon core pipes of different diameter specifications, different specifications of cooling die heads need to be matched, resulting in a relatively high cooling cost of the silicon core pipe.

[0005] To achieve the above purpose, the basic scheme of the utility model is as follows: A water-cooled die head for silicon core pipe processing includes a connection ring detachably connected to a die and a cooling ring assembly. The cooling ring assembly includes:

[0006] A fixed ring coaxially connected to the connection ring;

[0007] An elastic refrigeration film ring coaxially and fixedly installed on the inner wall of the fixed ring;

[0008] A number of cold-conducting metal rings with different diameters, the cold-conducting metal rings are in contact with and detachably connected to the inner ring of the refrigeration film ring;

[0009] A cooling water circulation unit communicated with the refrigeration film ring.

[0010] The technical principle of the present utility model is as follows: Before cooling and shaping the silicon core pipe, a suitable mold is selected according to the processing diameter of the silicon core pipe, and at the same time, a cold-conducting metal ring with a suitable inner diameter is selected according to the diameter of the silicon core pipe, so that the inner wall of the cold-conducting metal ring just fits the outer wall of the silicon core pipe and is installed in the refrigeration film ring. The elastic refrigeration film ring is attached to the outer wall of the cold-conducting metal ring; when the specification of the silicon core pipe changes, it is only necessary to replace the cold-conducting metal ring and install it at the refrigeration film ring. The replacement of the cold-conducting metal ring is convenient and simple, and there is no need to replace the entire water-cooled film head, reducing the cooling cost for different silicon core pipes.

[0011] When cooling and shaping the silicon core pipe, start the cooling water circulation unit. The cooling water circulation unit transports cold water to the refrigeration film ring, and the refrigeration film ring cools the cold-conducting metal ring, enabling the cold-conducting metal ring to exchange heat with the silicon core pipe, thereby realizing the cooling and shaping of the silicon core pipe. The cold water after being used by the refrigeration film ring can flow back to the cooling water circulation unit for refrigeration treatment again, and the cooling and shaping of the silicon core pipe can be efficiently completed.

[0012] Furthermore, a plurality of telescopic support members are provided between the fixed ring and the connecting ring. The telescopic support members include:

[0013] A telescopic rod, one end of the telescopic rod is fixedly connected to the end face of the connecting ring, the other end of the telescopic rod is fixedly connected to the end face of the fixed ring, and the axis of the telescopic rod is parallel to the axis of the fixed ring;

[0014] A locking member for locking the length of the telescopic rod.

[0015] Through the above settings, when adjusting the relative positions of the fixed ring, the refrigeration film ring, and the cold-conducting metal ring with the mold, the telescopic rod can be telescopically controlled, enabling precise control of the cooling position of the silicon core pipe after molding, and the molding of the silicon core pipe is more accurate.

[0016] Furthermore, an adjusting and fixing member is provided between the connecting ring and the mold. The adjusting and fixing member includes a plurality of tightening bolts. A plurality of threaded holes threaded with the tightening bolts are provided through the connecting ring in the radial direction, and the tightening bolts can abut against the outer wall of the mold.

[0017] Through the above settings, when fixing the connecting ring and the mold, screw the tightening bolts, and the tightening bolts move closer to and abut against the mold. In this process, the tightening bolts can adapt to the surfaces of more molds with different diameters and different profiles. As long as the mold and the connecting ring are adjusted to the coaxial state, the fixed ring and the mold can be adjusted to the coaxial state, and the adjustment and installation are convenient, simple, and reliable.

[0018] Furthermore, the adjusting and fixing member further includes an elastic abutting ring, the abutting ring fits the outer wall of the mold, and one end of the tightening bolt close to the center of the connecting ring is fixedly connected to the outer wall of the abutting ring.

[0019] With the above settings, during installation, the tightening ring fits onto the outer wall of the end of the mold. The tightening ring achieves the preliminary positioning of the installation of the connecting ring, facilitating the installation and tightening of the tightening bolts onto the mold. At the same time, the tightening ring can increase the friction between the end of the tightening bolt and the mold, enabling the connecting ring to be installed more stably onto the mold.

[0020] Furthermore, a flange that can abut against the end face of the refrigeration film ring is integrally formed at the end face of the heat-conducting metal ring.

[0021] With the above settings, the flange presses the end face of the refrigeration film ring, causing the refrigeration film ring and the heat-conducting metal ring to be snap-fastened and tightened against each other.

[0022] Furthermore, the transition between the heat-conducting metal ring and the flange is arc-shaped.

[0023] With the above settings, the outer wall of the silicon core pipe smoothly fits with the arc-shaped portion formed by the heat-conducting metal ring and the flange, enabling the silicon core pipe to come into full contact with the heat-conducting metal ring and be cooled and shaped during the horizontal conveying process.

[0024] Furthermore, the cooling water circulation unit includes:

[0025] A circulating refrigerator, which is provided with a water inlet and a water outlet;

[0026] A number of water inlet pipes, one end of each water inlet pipe passes through the fixing ring and is connected to the refrigeration film ring, and the other end of the water inlet pipe is fixedly connected to the water outlet of the circulating refrigerator;

[0027] A number of water outlet pipes, one end of each water outlet pipe passes through the fixing ring and is connected to the refrigeration film ring, and the other end of the water outlet pipe is fixedly connected to the water inlet of the circulating refrigerator.

[0028] With the above settings, the circulating refrigerator inputs the cooled cold water into the water inlet pipes. The cold water enters the refrigeration film ring to cool the heat-conducting metal ring. The water after being used for refrigeration flows back to the circulating refrigerator through the water outlet pipes for refrigeration treatment again. The spaced-apart water inlet pipes and water outlet pipes can allow the cold water to enter in a timely manner, and the water after heat exchange can also be output from the water outlet pipes, improving the water circulation efficiency and also enhancing the uniformity of the cold water distribution in the refrigeration film ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram in the axonometric direction of a water-cooled film head for processing silicon core pipes in an embodiment of the present invention.

[0030] In the above-mentioned drawings: mold 10, connecting ring 20, tightening bolt 201, tightening ring 202, fixing ring 30, refrigeration film ring 301, heat-conducting metal ring 302, telescopic rod 401, locking member 402, water inlet pipe 501, water outlet pipe 502. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solution in the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] This embodiment is basically as Figure 1 shown. An embodiment of the present utility model provides a water-cooled film head for silicon core pipe processing, which includes a connecting ring 20 detachably connected to a mold 10, a cooling ring assembly, and an adjusting and fixing member disposed between the connecting ring 20 and the mold 10. The adjusting and fixing member includes three tightening bolts 201 and an elastic tightening ring 202. The tightening ring 202 is an elastic rubber ring; as Figure 1 shown, the connecting ring 20 is provided with three threaded holes radially penetrating and threadedly connected to the tightening bolts 201. The tightening bolts 201 can abut against the outer wall of the mold 10, and the three tightening bolts 201 are evenly arranged around the circumference of the connecting ring 20; at the same time, the tightening ring 202 is in contact with the outer wall of the mold 10, and one end of the tightening bolt 201 close to the center of the connecting ring 20 is fixedly glued to the outer wall of the tightening ring 202.

[0033] As Figure 1 shown, the cooling ring assembly includes a fixed ring 30, an elastic refrigerating film ring 301, a plurality of heat-conducting metal rings 302, a cooling water circulation unit, and a plurality of telescopic support members disposed between the fixed ring 30 and the connecting ring 20. The heat-conducting metal rings 302 are made of copper; the fixed ring 30 and the connecting ring 20 are coaxially arranged. The telescopic support member includes a telescopic rod 401 and a locking member 402 for locking the length of the telescopic rod 401. The locking member 402 is a locking screw. One end of the telescopic rod 401 is welded to the end face of the connecting ring 20, and the other end of the telescopic rod 401 is welded to the end face of the fixed ring 30. The axis of the telescopic rod 401 is parallel to the axis of the fixed ring 30; the refrigerating film ring 301 is made of a heat-conducting silica gel sheet material and has good heat exchange performance and flexibility; the refrigerating film ring 301 is coaxially and fixedly installed on the inner wall of the fixed ring 30; at the same time, the diameters of the plurality of heat-conducting metal rings 302 are different, the heat-conducting metal rings 302 are in contact with the inner ring of the refrigerating film ring 301 and are snap-connected, and a flange that can abut against the end face of the refrigerating film ring 301 is integrally formed at the end face of the heat-conducting metal ring 302, and the transition between the heat-conducting metal ring 302 and the flange is in an arc shape.

[0034] As Figure 1As shown in the figure, the cooling water circulation unit includes a circulation chiller, four inlet pipes 501, and four outlet pipes 502. The circulation chiller is provided with an inlet and an outlet; one end of the inlet pipe 501 passes through the fixing ring 30 and is fixedly communicated with the refrigeration film ring 301, and the other end of the inlet pipe 501 is fixedly communicated with the outlet of the circulation chiller; one end of the outlet pipe 502 passes through the fixing ring 30 and is fixedly communicated with the refrigeration film ring 301, and the other end of the outlet pipe 502 is fixedly communicated with the inlet of the circulation chiller; one outlet pipe 502 is distributed between two adjacent inlet pipes 501, and the four inlet pipes 501 and the four outlet pipes 502 are evenly arranged around the circumference of the fixing ring 30.

[0035] When the water-cooled film head for silicon core pipe processing in this embodiment is in use, first select a suitable mold 10 according to the processing diameter of the silicon core pipe, and at the same time select a cold-conducting metal ring 302 with a suitable inner diameter according to the diameter of the silicon core pipe, so that the inner wall of the cold-conducting metal ring 302 just fits into the refrigeration film ring 301. The elastic refrigeration film ring 301 fits against the outer wall of the cold-conducting metal ring 302, and the flange on the cold-conducting metal ring 302 presses the end face of the refrigeration film ring 301, so that the refrigeration film ring 301 and the cold-conducting metal ring 302 are clamped and tightened; then install the water-cooled film head at the end of the corresponding mold 10. During installation, the abutting ring 202 fits against the outer wall of the end of the mold 10, and the abutting ring 202 realizes the preliminary positioning of the installation of the connecting ring 20.

[0036] Then screw the abutting bolt 201, and the abutting bolt 201 approaches and abuts against the mold 10, and presses a part of the abutting ring 202 against the outer wall of the mold 10. The abutting ring 202 can increase the friction between the end of the abutting bolt 201 and the mold 10, so that the connecting ring 20 is more stably installed on the mold 10. During this process, the abutting bolt 201 and the abutting ring 202 can adapt to the surfaces of more molds 10 with different diameters and different profiles. Just adjust the mold 10 and the connecting ring 20 to the coaxial state, and then the fixing ring 30 and the mold 10 can be adjusted to the coaxial state, so that the finally formed silicon core pipe is also coaxial with the fixing ring 30, the refrigeration film ring 301, and the cold-conducting metal ring 302.

[0037] When cooling the silicon core pipe, start the circulating refrigerator. The circulating refrigerator inputs the cooled cold water into the water inlet pipe 501. The cold water enters the cooling film ring 301 to cool the heat-conducting metal ring 302. The water after refrigeration use flows back to the circulating refrigerator through the water outlet pipe 502 for refrigeration treatment again. The water inlet pipe 501 and the water outlet pipe 502 arranged at intervals can timely let the cold water enter, and the water after heat exchange can also be output from the water outlet pipe 502, improving the water circulation efficiency and also enhancing the uniformity of the cold water distribution in the cooling film ring 301, facilitating more uniform refrigeration treatment; at this time, the end of the silicon core pipe passes through the heat-conducting metal ring 302, and the outer wall of the silicon core pipe is smoothly attached to the arc-shaped surface formed by the heat-conducting metal ring 302 and the flange, so that the silicon core pipe can be fully contacted with the heat-conducting metal ring 302 and cooled and shaped during the horizontal transmission process. The heat-conducting metal ring 302 has a good heat exchange effect and can uniformly cool and shape the circumferential direction of the silicon core pipe.

[0038] When the specification of the silicon core pipe changes, only need to replace the heat-conducting metal ring 302 and install it at the cooling film ring 301. The replacement of the heat-conducting metal ring 302 is convenient and simple, and there is no need to replace the entire water-cooled film head, reducing the cooling cost for different silicon core pipes.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A water-cooled membrane head for processing a silicon core tube, comprising a connecting ring detachably connected to a mold and a cooling ring assembly, characterized in that: The cooling ring assembly comprises: A fixing ring, wherein the fixing ring is coaxially connected to the connecting ring; An elastic refrigeration membrane ring, wherein the refrigeration membrane ring is coaxially fixedly mounted on the inner wall of the fixing ring; A plurality of cooling metal rings, wherein the diameters of the cooling metal rings are different, and the cooling metal rings are fitted with the inner ring of the refrigeration film ring and are detachably connected; A cooling water circulation unit is connected to the refrigeration membrane ring.

2. A water-cooled membrane head for processing a silicon core tube as claimed in claim 1, characterized in that: A plurality of telescopic support members are provided between the fixing ring and the connecting ring, and the telescopic support members include: A telescopic rod, one end of which is fixedly connected to the end surface of the connecting ring, the other end of which is fixedly connected to the end surface of the fixing ring, and the axis of the telescopic rod is parallel to the axis of the fixing ring; Locking piece for locking the length of the telescopic rod.

3. A water-cooled membrane head for processing a silicon core tube as claimed in claim 2, characterized in that: An adjusting fixture is provided between the connecting ring and the mold, and the adjusting fixture includes a plurality of clamping bolts. The connecting ring is radially penetrated with a plurality of threaded holes threadedly connected with the clamping bolts, and the clamping bolts can be abutted against the outer wall of the mold.

4. A water-cooled membrane head for processing a silicon core tube as claimed in claim 3, characterized in that: The adjusting and fixing member also includes an elastic clamping ring, which is fitted with the outer wall of the mold, and one end of the clamping bolt close to the center of the connecting ring is fixedly connected to the outer wall of the clamping ring.

5. A water-cooled membrane head for processing a silicon core tube as claimed in claim 4, characterized in that: The end surface of the cooling metal ring is integrally formed with a flange which can abut against the end surface of the refrigeration film ring.

6. A water-cooled membrane head for processing a silicon core tube as claimed in claim 5, characterized in that: The transition point between the cooling metal ring and the flange is in an arc shape.

7. A water-cooled membrane head for processing a silicon core tube as claimed in any one of claims 1 to 6, characterized in that: The cooling water circulation unit comprises: A circulating refrigerator, wherein the circulating refrigerator is provided with a water inlet and a water outlet; A plurality of water inlet pipes, one end of each of which passes through the fixing ring and is connected to the refrigeration film ring, and the other end of each of which is fixedly connected to the water outlet of the circulating refrigerator; A plurality of water outlet pipes, one end of which passes through the fixing ring and is communicated with the refrigeration film ring, and the other end of which is fixedly communicated with the water inlet of the circulating refrigerator.

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