A return oil circuit mold temperature sleeve and pipe mold for core temperature control

Abstract

The utility model relates to a kind of return type oil circuit mould temperature sleeve for core temperature control, it includes mould temperature sleeve and the mould temperature inner sleeve of its inside fixed, the mould temperature inner sleeve both ends are sealed together with the inner wall of mould temperature sleeve, double helix flow channel is arranged between the mould temperature sleeve and mould temperature inner sleeve, double helix flow channel one end is connected, the other end is connected with an oil port respectively, two oil ports are oil inlet and oil outlet respectively, the oil port is set in mould temperature inner sleeve head end portion;The limit ring is set in the mould temperature inner sleeve inside near its terminal position, through-hole is set in the limit ring middle part;Sealing cover is detachably connected to the limit ring outside. Pipe mould is also provided, which is composed of the above-mentioned mould temperature sleeve and outer mould, first core mould and second core mould. The mould temperature sleeve adopts small, compact structure return type oil circuit, which can meet the needs of customers for small pipe mould core temperature control when applied to pipe mould.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, specifically to a return-type oil circuit mold temperature sleeve and pipe mold for core temperature control. Background Technology

[0002] Traditional mold temperature jackets typically have a single-loop oil circuit, with heat transfer oil entering from one end and exiting from the other, both on the inner surface of the jacket. This results in pipe fittings and oil pipes being distributed at both ends of the jacket and installed within its internal space. Since mold tie rods and other connecting components also pass through this internal space, when the mold temperature jacket becomes small enough, the pipe fittings and oil pipes at both ends will inevitably interfere with these components. Furthermore, the smaller the internal space, the more difficult it is to install the pipe fittings and oil pipes. This limits the miniaturization of traditional mold temperature jackets to meet the core temperature control needs of small tubular molds. Therefore, it is necessary to propose a return-type oil circuit mold temperature jacket and tubular mold for core temperature control to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a return-type oil circuit mold temperature sleeve and a pipe mold for core temperature control. The mold temperature sleeve adopts a small and compact return-type oil circuit to meet the customer's needs for core temperature control of small pipe molds.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A return-type oil circuit mold temperature sleeve for core temperature control includes a mold temperature outer sleeve and a mold temperature inner sleeve fixed inside it. The two ends of the mold temperature inner sleeve are respectively sealed and connected to the inner wall of the mold temperature outer sleeve. A double spiral flow channel is provided between the mold temperature outer sleeve and the mold temperature inner sleeve. One end of the double spiral flow channel is connected, and the other end is respectively connected to an oil port. The two oil ports are an oil inlet and an oil outlet. The oil ports are opened at the end of the mold temperature inner sleeve.

[0006] The inner side of the mold temperature sleeve is provided with a limiting ring near its end, and the limiting ring has a through hole in the middle; a sealing cap is detachably connected to the outer side of the limiting ring.

[0007] In one embodiment of this utility model, the inner diameter of the mold temperature outer sleeve and the outer diameter of the mold temperature inner sleeve are matched, and the two ends of the mold temperature inner sleeve are welded together with the inner wall of the mold temperature outer sleeve. The double helical flow channel is opened on the cylindrical surface of the mold temperature inner sleeve.

[0008] As one embodiment of this utility model, a retaining ring is fixed inside the head end of the mold temperature outer sleeve. The inner diameter of the retaining ring is smaller than the outer diameter of the mold temperature inner sleeve, which limits the movement when the mold temperature outer sleeve and the mold temperature inner sleeve are assembled.

[0009] A pipe mold including the above-mentioned return-type oil circuit mold temperature sleeve, further includes an outer mold, a first core mold and a second core mold. The mold temperature sleeve, the first core mold and the second core mold are detachably fixed together to form the entire core mold. The core mold is fixed inside the outer mold, and a pipe flow channel is formed between the core mold and the outer mold.

[0010] In one embodiment of this utility model, the mold temperature sleeve and the second core mold are connected together by a tie rod assembly. The tie rod assembly includes a sixth threaded hole and a connecting stud in the middle of the second core mold. One end of the connecting stud is connected to the sixth threaded hole, and the other end passes through the limiting ring and is connected to the nut.

[0011] In one embodiment of this utility model, a first positioning groove is provided at the end of the first core mold, and a second positioning groove is provided at the head end of the second core mold. A positioning plate is provided between the first positioning groove and the second positioning groove. The positioning plate is detachably installed in the first positioning groove by bolts, and the second core mold is detachably installed on the positioning plate by bolts.

[0012] In one embodiment of this utility model, a heating cavity is provided inside the first core mold, an inner heating ring is provided on the inner wall of the heating cavity, a material inlet is provided at the head end of the first core mold, and a spiral flow channel is provided on the side wall of the first core mold, with the material inlet connected to the spiral flow channel.

[0013] In one embodiment of this utility model, the outer mold includes a first outer mold, a second outer mold, and a third outer mold connected together in sequence by bolts. The second outer mold and the third outer mold are connected together by a buckle plate. The buckle plate is circumferentially provided with a plurality of adjusting bolts corresponding to the third outer mold, and the concentricity of the second outer mold and the third outer mold is adjusted by adjusting the adjusting bolts.

[0014] In one embodiment of this utility model, the outer mold further includes an annular template, which is connected to the third outer mold by bolts.

[0015] In one embodiment of this utility model, an outer heating coil is provided on the outside of the first outer mold and the second outer mold, and a temperature sensor is provided on the outer heating coil.

[0016] The beneficial effects of adopting the above technical solution are as follows:

[0017] The oil circuit of the mold temperature jacket is designed as a return type, with the inlet and outlet ports both located on the side of the head end of the jacket. This allows the oil pipe connectors and pipes to be installed on the same side, without occupying any internal space. Therefore, it eliminates the interference issues that traditional mold temperature jackets have with their oil pipe connectors and pipes and connecting components such as mold tie rods that pass through the internal space. It also avoids the problem of inconvenient installation of oil pipe connectors and pipes due to the small internal space of traditional mold temperature jackets. Using this mold temperature jacket for pipe molds allows for the development of smaller pipe molds, meeting the needs of core temperature control in small pipe molds. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the pipe mold in this utility model.

[0019] Figure 2 This is an exploded structural diagram of the core mold in this utility model.

[0020] Figure 3 This is an exploded structural diagram of the outer mold in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the mold temperature jacket in this utility model.

[0022] Among them: 1. First outer mold, 101. First threaded hole, 102. Second threaded hole, 103. First slot, 2. Second outer mold, 201. Annular groove, 202. First connecting plate, 203. First connecting hole, 204. Second connecting hole, 3. Third outer mold, 301. Second slot, 4. Buckle plate, 401. Third threaded hole, 402. Third slot, 5. Adjusting bolt, 6. First core mold, 601. Second connecting plate, 602. Third connecting hole, 603. Oil pipe through hole, 604. Inlet, 605. Cable through hole, 606. Heating cavity, 607. First positioning groove, 608. Spiral flow channel, 609. Inner heating ring, 610. Fourth threaded hole, 7. Positioning plate, 701. First through hole, 702. Clearance hole, 70 3 Fourth connecting hole, 704 Fifth threaded hole, 8 Second core mold, 801 Second through hole, 802 Sixth threaded hole, 803 First positioning hole, 804 Second positioning groove, 805 Fourth slot, 806 Fifth connecting hole, 9 Mold temperature outer sleeve, 901 Second positioning hole, 902 Snap ring, 903 Retaining ring, 10 Mold temperature inner sleeve, 1001 Limiting ring, 1002 Seventh threaded hole, 11 Double spiral flow channel, 12 Oil port, 13 Sealing cap, 1301 Relief groove, 1302 Sixth connecting hole, 1303 Eighth threaded hole, 14 Connecting stud, 15 Nut, 16 Bolt, 17 External heating coil, 18 Temperature sensor, 19 Positioning pin, 20 Oil pipe joint, 21 Oil pipe, 22 Template. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 and Figure 4 The diagram shows a return-type oil circuit mold temperature jacket for core temperature control, comprising a mold temperature outer jacket 9 and a mold temperature inner jacket 10 fixed inside it. The two ends of the inner jacket 10 are respectively sealed to the inner wall of the mold temperature outer jacket 9. The inner jacket 10 is entirely located inside the mold temperature outer jacket 9, with a gap between its two ends and the ends of the mold temperature outer jacket 9. A double-helix flow channel 11 is provided between the mold temperature outer jacket 9 and the inner jacket 10. The end of the double-helix flow channel 11 (… Figure 1 The middle left end is connected, and the head end ( Figure 1 The middle right end is connected to an oil port 12, and the two oil ports 12 are respectively the oil inlet and the oil outlet. The oil ports 12 are opened at the end of the mold temperature inner sleeve 10.

[0025] The inner mold temperature sleeve 10 has a limiting ring 1001 near its end on its inner side. The limiting ring 1001 has a through hole in its center, the size of which is larger than the connecting stud 14 but smaller than the nut 15. A sealing cap 13 is detachably connected to the outer side of the limiting ring 1001. The inner side of the sealing cap 13 has a relief groove 1301 corresponding to the nut 15 at the left end of the connecting stud 14. The center of the sealing cap has a through eighth threaded hole 1303. When disassembling the mold, a lifting device is screwed into the eighth threaded hole 1303, and the mold temperature sleeve is then lifted out of the outer mold using a lifting tool. Multiple seventh threaded holes 1002 are evenly distributed circumferentially at the end of the inner mold temperature sleeve 10. The sealing cap 13 has sixth connecting holes 1302 corresponding to the seventh threaded holes 1002. The sealing cap 13 is fastened to the inner mold temperature sleeve 10 with bolts 16.

[0026] In this embodiment, the inner diameter of the outer mold temperature jacket 9 and the outer diameter of the inner mold temperature sleeve 10 are matched, and the two ends of the inner mold temperature sleeve 10 are welded to the inner wall of the outer mold temperature jacket 9. The double helical flow channel 11 is formed on the cylindrical surface of the inner mold temperature sleeve 10.

[0027] A retaining ring 903 is fixed inside the head end of the mold temperature outer sleeve 9. The inner diameter of the retaining ring 903 is smaller than the outer diameter of the mold temperature inner sleeve 10. When the mold temperature inner sleeve 10 is assembled from the left end of the mold temperature outer sleeve 9, the retaining ring 903 limits its position.

[0028] like Figures 1-3As shown, this utility model also provides a pipe mold including the above-mentioned return-type oil circuit mold temperature sleeve, which further includes an outer mold, a first core mold 6 and a second core mold 8. The mold temperature sleeve, the first core mold 6 and the second core mold 8 are detachably fixed together to form the entire core mold. The core mold is fixed inside the outer mold, and a pipe flow channel is formed between the core mold and the outer mold.

[0029] In this embodiment, the mold temperature sleeve and the second core mold 8 are connected together by a tie rod assembly. The tie rod assembly includes a sixth threaded hole 802 located in the middle of the second core mold 8 and a connecting stud 14. The connecting stud 14 is a double-ended stud. One end of the connecting stud 14 is connected to the sixth threaded hole 802, and the other end passes through the limiting ring 1001 and is connected to the nut 15. After the connecting stud 14 is connected to the sixth threaded hole 802, the nut 15 at the right end of the connecting stud 14 is tightened by a socket wrench to achieve the function of preventing the double nuts from falling off. As a further optimization, the end of the second core mold 8 is provided with a fourth slot 805, and the head end of the mold temperature sleeve 9 is provided with a retaining ring 902 corresponding to the fourth slot 805. The opposing surfaces of the second core mold 8 and the mold temperature sleeve 9 are provided with corresponding first positioning holes 803 and second positioning holes 901, and a positioning pin 19 is provided between the first positioning hole 803 and the second positioning hole 901.

[0030] The first core mold 6 has an annular first positioning groove 607 at its end, and the second core mold 8 has an annular second positioning groove 804 at its head. An annular positioning plate 7 is disposed between the first positioning groove 607 and the second positioning groove 804. The first core mold 6 has a fourth threaded hole 610 at its end, and the positioning plate 7 has a fourth connecting hole 703 corresponding to the fourth threaded hole 610. The positioning plate 7 has a fifth threaded hole 704, and the second core mold 8 has a fifth connecting hole 806 corresponding to the fifth threaded hole 704. The positioning plate 7 is detachably mounted on the first core mold 6 by bolts 16, and the second core mold 8 is detachably mounted on the positioning plate 7 by bolts 16.

[0031] Two oil ports 12 are connected to oil pipe 21 through an oil pipe connector 20. The second core mold 8 is provided with a second through hole 801 corresponding to the oil pipe 21. The positioning plate 7 is provided with a first through hole 701 corresponding to the oil pipe 21. The oil pipe passes through the heating chamber 606 and finally exits through the oil pipe through hole 603 provided on the first core mold 6.

[0032] As a further optimization, the first core mold 6 has a cylindrical heating cavity 606 inside, and an inner heating coil 609 is provided on the inner wall of the heating cavity 606. The first core mold 6 has a cable through hole 605 for arranging cables, so that the cables can be connected to the junction box of the inner heating coil 609. The first core mold 6 has a feed port 604 at its head end, and a spiral flow channel 608 is provided on the side wall of the first core mold 6. The feed port 604 is connected to the spiral flow channel 608.

[0033] The outer mold includes a first outer mold 1, a second outer mold 2, and a third outer mold 3 connected sequentially by bolts. The second outer mold 2 and the third outer mold 3 are connected together by a buckle plate 4. The buckle plate 4 is circumferentially provided with a plurality of adjusting bolts 5 corresponding to the third outer mold 3, and the concentricity of the second outer mold 2 and the third outer mold 3 is adjusted by adjusting the adjusting bolts 5. As a further optimization, the outer mold also includes an annular template 22, which is connected to the end of the third outer mold 3 by bolts. A temperature sensor 18 is provided on the outer wall of the template 22.

[0034] Specifically, the first outer mold 1 has a first slot 103 at its end, and the outer diameter of the first connecting plate 202 at the head end of the second outer mold 2 corresponds to the first slot 103; the third outer mold 3 has a second slot 301 at its end on its outer cylindrical surface, the buckle plate 4 is annular, and the inner wall at its head end has a third slot 402, the inner wall of the buckle plate 4 is in contact with the bottom of the cylindrical groove of the second slot 301, and the bottom of the cylindrical groove of the third slot 402 is in contact with the outer diameter of the third outer mold 3. An annular groove 201 is provided in the middle of the outer wall of the second outer mold 2. Two first connecting plates 202 are formed on both sides of the annular groove 201. The external heating coil 17 is disposed in the annular groove 201. The head end and the end end of the second outer mold 2 are respectively provided with a first connecting hole 203 and a second connecting hole 204. The end of the first outer mold 1 is provided with a second threaded hole 102 corresponding to the first connecting hole 203. The buckle plate 4 is provided with a third threaded hole 401 corresponding to the second connecting hole 204. The second threaded hole 102 and the first connecting hole 203 are connected together by bolts 16. The second connecting hole 204 and the third threaded hole 401 are connected together by bolts 16. The buckle plate 4 fixes the third outer mold 3 and the second outer mold 2 together.

[0035] The first core mold 6 is provided with a second connecting plate 601 at its head end. The second connecting plate 601 is provided with a plurality of third connecting holes 602 evenly arranged in the circumferential direction. The first outer mold 1 is provided with a first threaded hole 101 corresponding to the third connecting hole 602 at its head end. The first core mold 6 and the first outer mold 1 are connected together by bolts 16.

[0036] The first outer mold 1 and the second outer mold 2 are provided with an outer heating ring 17. The outer heating ring 17 of the second outer mold 2 is provided with a temperature sensor 18 for monitoring the mold temperature.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A return-type oil circuit mold temperature sleeve for core temperature control, characterized in that: It includes a mold temperature outer sleeve (9) and a mold temperature inner sleeve (10) fixed inside it. The two ends of the mold temperature inner sleeve (10) are respectively sealed and connected to the inner wall of the mold temperature outer sleeve (9). A double spiral flow channel (11) is provided between the mold temperature outer sleeve (9) and the mold temperature inner sleeve (10). One end of the double spiral flow channel (11) is connected, and the other end is connected to an oil port (12). The two oil ports (12) are the oil inlet and the oil outlet, respectively. The oil port (12) is opened at the head end of the mold temperature inner sleeve (10). The inner side of the mold temperature sleeve (10) is provided with a limiting ring (1001) near its end, and the limiting ring (1001) has a through hole in the middle; a sealing cap (13) is detachably connected to the outer side of the limiting ring (1001).

2. A return-type oil circuit mold temperature sleeve for core temperature control according to claim 1, characterized in that: The inner diameter of the outer mold temperature jacket (9) and the outer diameter of the inner mold temperature sleeve (10) are matched, and the two ends of the inner mold temperature sleeve (10) are welded together with the inner wall of the outer mold temperature jacket (9). The double helical flow channel (11) is opened on the cylindrical surface of the inner mold temperature sleeve (10).

3. A return-type oil circuit mold temperature sleeve for core temperature control according to claim 2, characterized in that: A retaining ring (903) is fixed inside the head end of the mold temperature outer sleeve (9). The inner diameter of the retaining ring (903) is smaller than the outer diameter of the mold temperature inner sleeve (10), and it is used to limit the movement when the mold temperature outer sleeve (9) and the mold temperature inner sleeve (10) are assembled.

4. A pipe mold comprising a return-type oil circuit mold temperature sleeve as described in any one of claims 1-3, characterized in that: It also includes an outer mold, a first core mold (6) and a second core mold (8). The mold temperature sleeve, the first core mold (6) and the second core mold (8) are detachably fixed together to form the entire core mold. The core mold is fixed inside the outer mold, and a pipe flow channel is formed between the core mold and the outer mold.

5. A pipe mold according to claim 4, characterized in that: The mold temperature sleeve and the second core mold (8) are connected together by a tie rod assembly. The tie rod assembly includes a sixth threaded hole (802) and a connecting stud (14) located in the middle of the second core mold (8). One end of the connecting stud (14) is connected to the sixth threaded hole (802), and the other end passes through the limiting ring (1001) and is connected to the nut (15).

6. A pipe mold according to claim 5, characterized in that: The first core mold (6) has a first positioning groove (607) at its end, and the second core mold (8) has a second positioning groove (804) at its head. A positioning plate (7) is provided between the first positioning groove (607) and the second positioning groove (804). The positioning plate (7) is detachably installed in the first positioning groove (607) by bolts (16), and the second core mold (8) is detachably installed on the positioning plate (7) by bolts (16).

7. A pipe mold according to claim 6, characterized in that: The first core mold (6) is provided with a heating cavity (606) inside, and an inner heating coil (609) is provided on the inner wall of the heating cavity (606). The first core mold (6) is provided with a feed port (604) at the head end, and a spiral flow channel (608) is provided on the side wall of the first core mold (6). The feed port (604) is connected to the spiral flow channel (608).

8. A pipe mold according to claim 7, characterized in that: The outer mold includes a first outer mold (1), a second outer mold (2) and a third outer mold (3) connected together in sequence by bolts. The second outer mold (2) and the third outer mold (3) are connected together by a buckle plate (4). The buckle plate (4) is evenly provided with a plurality of adjusting bolts (5) corresponding to the third outer mold (3) in the circumferential direction. The concentricity of the second outer mold (2) and the third outer mold (3) is adjusted by adjusting the bolts (5).

9. A pipe mold according to claim 8, characterized in that: The outer mold also includes an annular template (22), which is connected to the third outer mold (3) by bolts.

10. A pipe mold according to claim 9, characterized in that: The first outer mold (1) and the second outer mold (2) are provided with an outer heating coil (17), and a temperature sensor (18) is provided on the outer heating coil (17).

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