PVC part heat insulation runner of injection mold

Abstract

The utility model discloses a PVC (polyvinyl chloride) component heat insulation runner of an injection mold. The PVC component heat insulation runner comprises a mold body, a heat insulation runner, a heat insulation assembly and a disassembly assembly, according to the PVC part heat insulation runner of the injection mold, the vacuum cavity is formed in the heat insulation runner in the mold body, the heat insulation ceramic sleeve is arranged outside the heat insulation runner in a sleeving manner, and the separation cavity is formed between the heat insulation ceramic sleeve and the mold body, so that the heat insulation runner is prevented from being in contact with the mold body under the condition that the heat insulation runner is not in contact with the mold body; a three-layer heat insulation structure is formed at the outer end of the heat insulation runner, so that the heat insulation effect on a PVC injection molding material in the heat insulation runner in the injection molding process is improved, and a first inner runner sleeve and a second inner runner sleeve which are positioned and mounted on the two sides of a mounting opening in the heat insulation runner can also be used for cleaning the inner channel of the heat insulation runner when the inner channel of the heat insulation runner needs to be cleaned; and the first inner runner sleeve and the second inner runner sleeve are taken down and split through the threaded seat at the upper end, so that inner runners of the first inner runner sleeve and the second inner runner sleeve are uniformly and comprehensively cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a heat-insulating flow channel of a PVC component of an injection mold. Background Art

[0002] Injection molds are used to produce PCV plastic pipe fittings. Since the melting point of PVC material is above 170°C, but it will decompose and change color when it exceeds 180°C, the temperature of the flow channel in the mold must be maintained between 170°C and 180°C during injection molding, so that the PVC material during injection molding can be kept warm through the insulating flow channel installed in the mold.

[0003] The existing PVC insulation runner of the injection mold generally keeps in contact with the mold after installation, and most of them have a single-layer insulation structure inside, which results in poor insulation effect on the PVC material during injection molding. Therefore, we propose an injection mold PVC insulation runner. Utility Model Content

[0004] The main purpose of the utility model is to provide a heat-insulating flow channel of a PVC component of an injection mold, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A heat-insulating runner of a PVC component of an injection mold comprises a mold body, a heat-insulating runner, a heat-insulating assembly and a disassembly assembly, wherein the heat-insulating assembly comprises a vacuum chamber arranged in the heat-insulating runner and a heat-insulating ceramic sleeve movably sleeved on the outer end of the heat-insulating runner, an installation cavity is also opened in the center of the mold body, and the heat-insulating ceramic sleeve and the installation cavity are matched, a separation cavity is also formed in the center between the installation cavity and the heat-insulating ceramic sleeve, and a support ring is also fixedly arranged at the lower end of the heat-insulating ceramic sleeve.

[0007] Preferably, the thermal insulation component also includes upper mounting holes, lower mounting holes and threaded holes arranged correspondingly in the thermal insulation flow channel, the thermal insulation ceramic sleeve and the mold body, and screws for movably mounting the upper mounting holes, lower mounting holes and threaded holes at the upper end of the thermal insulation flow channel.

[0008] Preferably, the disassembly assembly includes an installation opening extending through the center of the thermal insulation channel, and a plurality of positioning holes arranged in the thermal insulation channel.

[0009] Preferably, the disassembly assembly further comprises a first inner flow channel sleeve and a second inner flow channel sleeve movably installed on both sides of the installation opening, and positioning columns fixedly installed at the lower ends of the first inner flow channel sleeve and the second inner flow channel sleeve and matching the positioning holes.

[0010] Preferably, the disassembly assembly further comprises an internal thread arranged on the upper inner wall of the installation opening, and a threaded seat movably mounted at the inner end of the internal thread.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, the vacuum cavity arranged in the heat-insulating runner in the mold body, the heat-insulating ceramic sleeve arranged outside the heat-insulating runner, and the separation cavity formed between the heat-insulating ceramic sleeve and the mold body form a three-layer heat-insulating structure at the outer end thereof while ensuring that the heat-insulating runner does not contact the mold body, thereby improving the heat-insulating effect of the heat-insulating runner on the PVC injection molding material during injection molding;

[0013] 2. In the utility model, the first inner flow channel sleeve and the second inner flow channel sleeve positioned and installed on both sides of the installation opening in the heat insulation flow channel can also be removed and separated through the threaded seat at the upper end when the channel in the heat insulation flow channel needs to be cleaned, so as to evenly and comprehensively clean the internal flow channels of the first inner flow channel sleeve and the second inner flow channel sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side sectional view of the heat-insulating flow channel of the utility model;

[0016] Figure 3 It is an exploded view of the utility model;

[0017] Figure 4 For this utility model Figure 3 A is an enlarged view of the middle image.

[0018] Reference numerals:

[0019] 100. Mould body;

[0020] 200, heat-insulating flow channel;

[0021] 300. Thermal insulation assembly; 301. Vacuum chamber; 302. Thermal insulation ceramic sleeve; 303. Mounting chamber; 304. Partition chamber; 305. Support ring; 306. Upper mounting hole; 307. Lower mounting hole; 308. Threaded hole; 309. Screw.

[0022] 400, disassembly assembly; 401, installation opening; 402, positioning hole; 403, first inner flow channel sleeve; 404, second inner flow channel sleeve; 405, positioning column; 406, internal thread; 407, threaded seat. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Embodiment 1:

[0025] like Figure 1-4 As shown, this embodiment provides an injection mold PVC component insulation flow channel, including a mold body 100, an insulation flow channel 200, an insulation component 300 and a disassembly component 400, the insulation component 300 includes a vacuum chamber 301 arranged in the insulation flow channel 200, and an insulation ceramic sleeve 302 movably sleeved on the outer end of the insulation flow channel 200, and an installation cavity 303 is also opened in the center of the mold body 100, and the insulation ceramic sleeve 302 matches the installation cavity 303, and the installation cavity 303 is matched. 03 and the thermal insulation ceramic sleeve 302. A separation cavity 304 is also formed in the center. A support ring 305 is also fixedly arranged at the lower end of the thermal insulation ceramic sleeve 302. The thermal insulation assembly 300 also includes upper mounting holes 306, lower mounting holes 307 and threaded holes 308 which are arranged correspondingly in the thermal insulation runner 200, the thermal insulation ceramic sleeve 302 and the mold body 100, and screws 309 for movably mounting the upper mounting holes 306, the lower mounting holes 307 and the threaded holes 308 at the upper end of the thermal insulation runner 200.

[0026] Specifically, when using an injection mold to produce PCV plastic pipe fittings, since the melting point of PVC material is above 170°C, but it will decompose and discolor when it exceeds 180°C, the temperature of the flow channel in the mold must be maintained between 170°C and 180°C during injection molding, so that the PVC material in the injection molding is kept warm by the heat-insulating flow channel 200 installed in the mold body 100. The vacuum chamber 301 arranged in the heat-insulating flow channel 200 in the mold body 100, the heat-insulating ceramic sleeve 302 arranged outside the heat-insulating flow channel 200, and the heat-insulating ceramic sleeve 30 2 and the mold body 100, a three-layer heat insulation structure is formed at its outer end while ensuring that the heat insulation runner 200 does not contact the mold body 100, so as to improve the heat insulation effect of the heat insulation runner 200 on the PVC injection molding material during injection molding, and the upper mounting hole 306, the lower mounting hole 307 and the threaded hole 308 opened in the heat insulation runner 200, the heat insulation ceramic sleeve 302 and the mold body 100 are mainly used for fixing the heat insulation runner 200 and the heat insulation ceramic sleeve 302 in the mold body 100 after the screws 309 are installed.

[0027] Embodiment 2:

[0028] Based on the first embodiment, Figure 4As shown, the disassembly component 400 includes a mounting opening 401 extending through the center of the thermal insulation channel 200, and a plurality of positioning holes 402 arranged in the thermal insulation channel 200. The disassembly component 400 also includes a first inner channel sleeve 403 and a second inner channel sleeve 404 movably installed on both sides of the mounting opening 401, and positioning columns 405 matched with the positioning holes 402 are fixedly arranged at the lower ends of the first inner channel sleeve 403 and the second inner channel sleeve 404. The disassembly component 400 also includes an internal thread 406 provided on the upper inner wall of the mounting opening 401, and a threaded seat 407 movably installed at the inner end of the internal thread 406.

[0029] Specifically, the first inner channel sleeve 403 and the second inner channel sleeve 404 are positioned and installed on both sides of the installation port 401 in the heat insulating channel 200. When the inner channel of the heat insulating channel 200 needs to be cleaned, the first inner channel sleeve 403 and the second inner channel sleeve 404 can be removed and disassembled through the threaded seat 407 at the upper end, so as to evenly and comprehensively clean the internal channels of the first inner channel sleeve 403 and the second inner channel sleeve 404. The positioning column 405 fixedly installed at the lower end of the first inner channel sleeve 403 and the second inner channel sleeve 404 is mainly used for positioning and restraining the first inner channel sleeve 403 and the second inner channel sleeve 404 during installation.

[0030] The working principle and use process of this utility model:

[0031] When the PVC material is injected into the mold cavity through the insulating runner 200, the vacuum chamber 301 arranged in the insulating runner 200, the insulating ceramic sleeve 302 fully wrapped outside the insulating runner 200, and the separation chamber 304 formed between the insulating ceramic sleeve 302 and the mold body 100 can form a three-layer insulation structure at the outer end of the PVC material injection, thereby ensuring the temperature stability of the PVC material in the insulating runner 200. At the same time, after the use of the insulating runner 200 is completed, the threaded seat 407 at the center of the insulating runner 200 can also be unscrewed, so that after the threaded seat 407 is removed, the first inner runner sleeve 403 and the second inner runner sleeve 404 in the installation port 401 can be taken out and separated, so as to fully clean the residual PVC material on the inner walls of the first inner runner sleeve 403 and the second inner runner sleeve 404.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat-insulating runner of a PVC component of an injection mold, comprising a mold body (100), a heat-insulating runner (200), a heat-insulating component (300) and a disassembly component (400), characterized in that: The heat insulation component (300) comprises a vacuum chamber (301) arranged in the heat insulation flow channel (200), and a heat insulation ceramic sleeve (302) movably sleeved on the outer end of the heat insulation flow channel (200); a mounting chamber (303) is also provided at the center of the mold body (100); the heat insulation ceramic sleeve (302) and the mounting chamber (303) are matched with each other; a separation chamber (304) is also formed at the center between the mounting chamber (303) and the heat insulation ceramic sleeve (302); and a support ring (305) is also fixedly provided at the lower end of the heat insulation ceramic sleeve (302).

2. The heat-insulating runner of a PVC component of an injection mold according to claim 1, characterized in that: The thermal insulation component (300) further comprises an upper mounting hole (306), a lower mounting hole (307) and a threaded hole (308) which are arranged in correspondence with each other in the thermal insulation flow channel (200), the thermal insulation ceramic sleeve (302) and the mold body (100), and a screw (309) which is movably mounted on the upper mounting hole (306), the lower mounting hole (307) and the threaded hole (308) at the upper end of the thermal insulation flow channel (200).

3. The heat-insulating runner of a PVC component of an injection mold according to claim 1, characterized in that: The disassembly assembly (400) comprises an installation opening (401) extending through the center of the heat-insulating flow channel (200), and a plurality of groups of positioning holes (402) arranged in the heat-insulating flow channel (200).

4. The heat-insulating runner of a PVC component of an injection mold according to claim 1, characterized in that: The disassembly assembly (400) further comprises a first inner flow channel sleeve (403) and a second inner flow channel sleeve (404) movably mounted on both sides of the mounting opening (401), and positioning posts (405) matched with the positioning holes (402) and arranged and fixedly mounted at the lower ends of the first inner flow channel sleeve (403) and the second inner flow channel sleeve (404).

5. The heat-insulating runner of a PVC component of an injection mold according to claim 1, characterized in that: The disassembly assembly (400) further comprises an internal thread (406) arranged on the upper inner wall of the installation opening (401), and a threaded seat (407) movably mounted on the inner end of the internal thread (406).

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