Multi-section joint mold core cooling mechanism for high-speed PET (polyethylene terephthalate) bottle preform mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a multi-section joint mold core cooling mechanism for a high-speed PET bottle preform mold. The die comprises a die core sleeve, and a die core and a cooling water jacket are arranged in the die core sleeve. In the use process, cooling water is injected from the mold core and enters the water channel, the multi-section joint mold core cooling assembly receives the cooling water, and a multi-section joint structure is adopted, so that the cooling area and length are increased, the cooling efficiency is improved, and the overall quality of a PET bottle preform is improved; the supporting connecting piece is used for connecting and fixing the multi-section joint mold core cooling assembly and the mold core sleeve, the connecting effect is good, a detachable structure is adopted, disassembly, replacement and maintenance are convenient, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a multi-section joint mold core cooling mechanism for a high-speed PET bottle embryo mold. Background Art

[0002] With the continuous advancement of science and technology and the scale of production, the degree of automation of PET bottle blowing machines is getting higher and higher, and the production efficiency is also getting higher and higher. PET is the abbreviation of polyethylene terephthalate. The plastic material of PET is a polymer produced by the combination of terephthalic acid and ethylene glycol. PET plastic bottles are widely used in life, chemical, and agricultural industries, such as daily necessities, daily chemical packaging, medical care, beverages, mineral water, oil product containers, reagents and other fields, and the demand is large. The main steps of the existing PET bottle processing technology are first to use the mold injection molding method to process the PET raw materials into preforms, and then use the injection molding method to inject the preforms into the set container shape. When the existing PET bottle preform mold is cooled, its cooling area and length are limited by the mold, and it is easy to have cooling dead corners, the cooling efficiency is relatively general, and the maintenance cost of the longer cooling structure is also high. Therefore, it is urgent to design a high-speed PET bottle preform mold multi-segment joint core cooling mechanism that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses an injection mold core cooling device [application number: 200920125151.4], which includes a mold core and a cavity. The mold core is hollow in the middle with a cavity. A water pipe is installed inside the cavity. The outer diameter of the water pipe is smaller than the inner diameter of the cavity. Cooling water flows in from the water inlet of the water pipe and flows out from the water outlet. It also includes a nylon sleeve that is sleeved on the water pipe, stuck in the cavity and fits with the inner wall of the mold core. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a high-speed PET preform mold multi-section joint mold core cooling mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-speed PET preform mold multi-section joint core cooling mechanism comprises a core sleeve, wherein a core and a cooling water jacket are arranged inside the core sleeve, a water channel is formed between the core and the cooling water jacket, a multi-section joint core cooling assembly is arranged below the core sleeve, and the multi-section joint core cooling assembly is connected to the core sleeve via a supporting connector.

[0007] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, the multi-stage joint core cooling assembly includes a front mold middle end cooling sleeve and a front mold head cooling sleeve arranged below the core sleeve, and the front mold middle end cooling sleeve is connected to the supporting connecting piece.

[0008] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, the outer side of the front mold middle end cooling jacket has a spiral cooling channel, and the spiral cooling channel corresponds to the position of the front mold head cooling jacket.

[0009] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, the front mold head cooling jacket has a bottom connecting cavity groove, and the bottom connecting cavity groove is connected to the water channel.

[0010] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, the outer side of the front mold head cooling sleeve has a plurality of head cooling loops distributed in a circular array along the center point of the front mold head cooling sleeve, and a connecting hole is provided between two adjacent head cooling loops.

[0011] In the above-mentioned high-speed PET preform mold multi-stage joint mold core cooling mechanism, a top of one of the head cooling loops has a clearance gap.

[0012] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, the supporting connector includes a supporting sleeve arranged between the front mold middle end cooling sleeve and the core sleeve, and a supporting platform is arranged between the supporting sleeve and the core sleeve.

[0013] In the above-mentioned high-speed PET preform mold multi-stage joint core cooling mechanism, a water outlet side hole is provided in the cooling water jacket, and the water outlet side hole is connected to the water channel.

[0014] In the above-mentioned high-speed PET preform mold multi-stage joint mold core cooling mechanism, the bottom of the mold core is provided with a water outlet opening, and the side of the water outlet opening is provided with a plurality of V-shaped grooves.

[0015] In the above-mentioned high-speed PET preform mold multi-stage joint mold core cooling mechanism, the mold core side is provided with a plurality of supporting ribs, and the supporting ribs are abutted and matched with the cooling water jacket.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. During use, the utility model injects cooling water from the mold core into the water channel, and the multi-section joint mold core cooling assembly receives the cooling water. The multi-section joint structure increases the cooling area and length, improves the cooling efficiency, and improves the overall quality of the PET bottle embryo. The supporting connector is used to connect and fix the multi-section joint mold core cooling assembly to the mold core sleeve, and the connection effect is good. The detachable structure is adopted, which is convenient for disassembly, replacement and maintenance, and reduces the maintenance cost.

[0018] 2. The clearance gap in the utility model facilitates the cooling water to be connected in series and upwardly connected, thereby increasing the cooling angle and range.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0022] Figure 3 It is a schematic diagram of the structure of the cooling jacket of the front mold head.

[0023] Figure 4 It is a structural diagram of the mold core.

[0024] In the figure: cooling water jacket 3, core jacket 1, core 2, water channel 4, multi-section joint core cooling assembly 5, supporting connector 6, front mold middle cooling jacket 7, front mold head cooling jacket 8, spiral cooling channel 88, bottom connecting cavity groove 9, head cooling ring channel 10, connecting hole 11, clearance gap 12, supporting sleeve 13, supporting platform 14, water outlet opening 15, V-shaped groove 16, supporting rib plate 17. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a high-speed PET preform mold multi-section joint core cooling mechanism includes a core sleeve 1, a core 2 and a cooling water jacket 3 are arranged inside the core sleeve 1, a water channel 4 is formed between the core 2 and the cooling water jacket 3, a multi-section joint core cooling assembly 5 is arranged below the core sleeve 1, and the multi-section joint core cooling assembly 5 is connected to the core sleeve 1 through a supporting connector 6.

[0027] In this embodiment, during use, cooling water is injected from the mold core 2 into the water channel 4, and the multi-section joint mold core cooling component 5 receives the cooling water. The multi-section joint structure is adopted to increase the cooling area and length, improve the cooling efficiency, and improve the overall quality of the PET bottle embryo. The supporting connector 6 is used to connect and fix the multi-section joint mold core cooling component 5 to the mold core sleeve 1, and the connection effect is good. The detachable structure is adopted, which is convenient for disassembly, replacement and maintenance, and reduces the maintenance cost.

[0028] Combination Figure 1-4 As shown, the multi-stage joint core cooling assembly 5 includes a front mold middle end cooling jacket 7 and a front mold head cooling jacket 8 arranged below the core jacket 1, and the front mold middle end cooling jacket 7 is connected to the supporting connector 6.

[0029] Specifically, during use, cooling water is injected from the mold core 2 into the water channel 4, and the front mold middle end cooling jacket 7 and the front mold head cooling jacket 8 receive the cooling water. The front mold middle end cooling jacket 7 cools the middle end of the PET bottle preform, and the front mold head cooling jacket 8 cools the head of the PET bottle preform. The multi-stage joint structure is adopted to increase the cooling area and length, improve the cooling efficiency, and improve the overall quality of the PET bottle preform.

[0030] The outer side of the front mold middle end cooling jacket 7 is provided with a spiral cooling channel 88 , and the spiral cooling channel 88 corresponds to the position of the front mold head cooling jacket 8 .

[0031] In this embodiment, the cooling water performs spiral cooling on the middle end of the PET preform through the spiral cooling channel 88. The spiral structure can increase the cooling area, reduce the cooling dead angle, and achieve a better cooling effect.

[0032] Combination Figure 2 , Figure 3 As shown, the front mold head cooling sleeve 8 has a bottom connecting cavity 9, and the bottom connecting cavity 9 is connected to the water channel 4. The outside of the front mold head cooling sleeve 8 has a plurality of head cooling ring channels 10 distributed in a circular array along the center point of the front mold head cooling sleeve 8, and a connecting hole 11 is provided between two adjacent head cooling ring channels 10.

[0033] In this embodiment, cooling water can directly enter the bottom connecting cavity 9 from the bottom of the water channel 4, and cooperate with the head cooling loop 10 to cool the head of the PET bottle embryo. The cooling range is large, and the connecting hole 11 facilitates the cooling water of two adjacent head cooling loops 10 to be connected.

[0034] Combination Figure 3 As shown, one of the head cooling channels 10 has a relief notch 12 at the top.

[0035] In this embodiment, the gap 12 allows the cooling water to be connected in series and upwardly connected, thereby increasing the cooling angle and range.

[0036] The supporting connecting member 6 comprises a supporting sleeve 13 arranged between the cooling sleeve 7 at the middle end of the front mold and the core sleeve 1 , and a supporting platform 14 is arranged between the supporting sleeve 13 and the core sleeve 1 .

[0037] In this embodiment, the support sleeve 13 and the support platform 14 play a role of connecting support.

[0038] Combination Figure 1-2 As shown, a water outlet side hole is provided in the cooling water jacket 3 , and the water outlet side hole is connected to the water channel 4 .

[0039] In this embodiment, cooling water can enter the water channel 4 through the water outlet side hole.

[0040] Combination Figure 4 As shown, a water outlet opening 15 is provided at the bottom of the mold core 2 , and a plurality of V-shaped grooves 16 are provided at the side of the water outlet opening 15 .

[0041] In this embodiment, the cooling water flows out from the water outlet opening 15 at the bottom of the mold core 2, and the V-shaped groove 16 can increase the diameter of the water outlet.

[0042] Combination Figure 1-4 As shown, a plurality of supporting ribs 17 are provided on the side of the mold core 2 , and the supporting ribs 17 are in abutment with the cooling water jacket 3 .

[0043] In this embodiment, the supporting ribs 17 can abut and fix the mold core 2 and the cooling water jacket 3 to avoid shaking, and the stability is relatively strong.

[0044] The working principle of the utility model is:

[0045] During use, cooling water is injected from the mold core 2 into the water channel 4, and the front mold middle end cooling sleeve 7 and the front mold head cooling sleeve 8 receive the cooling water. The front mold middle end cooling sleeve 7 cools the middle end of the PET bottle embryo, and the front mold head cooling sleeve 8 cools the head of the PET bottle embryo. The multi-section joint structure is adopted to increase the cooling area and length, improve the cooling efficiency, and improve the overall quality of the PET bottle embryo. The cooling water spirally cools the middle end of the PET bottle embryo through the spiral cooling channel 88. The spiral structure can increase the cooling area, reduce the cooling dead angle, and achieve a better cooling effect. The cooling water can directly enter the bottom connecting cavity 9 from the bottom of the water channel 4, cooperate with the head cooling loop 10, and cool the head of the PET bottle embryo. The cooling range is large, and the connecting hole 11 is convenient for connecting the cooling water of the two adjacent head cooling loops 10.

[0046] The gap 12 allows the cooling water to be connected in series and upwardly connected, thereby increasing the cooling angle and range. The support sleeve 13 and the support platform 14 play a role in connecting and supporting, and the connection effect is good. The detachable structure is adopted, which is convenient for disassembly, replacement and maintenance, and reduces the maintenance cost.

[0047] Cooling water can enter the water channel 4 through the water outlet side hole, and the cooling water flows out from the water outlet opening 15 at the bottom of the mold core 2. The V-shaped groove 16 can increase the diameter of the water outlet. The supporting rib 17 can abut and fix the mold core 2 and the cooling water jacket 3 to avoid shaking, and the stability is strong.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0049] Although this article uses more terms such as cooling water jacket 3, core sleeve 1, core 2, water channel 4, multi-section joint core cooling assembly 5, supporting connector 6, front mold middle cooling jacket 7, front mold head cooling jacket 8, spiral cooling channel 88, bottom connecting cavity groove 9, head cooling ring channel 10, connecting hole 11, clearance gap 12, support sleeve 13, support platform 14, water outlet opening 15, V-shaped groove 16, support rib plate 17, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A high-speed PET preform mold multi-stage joint core cooling mechanism, comprising a core sleeve (1), characterized in that: The core sleeve (1) is provided with a core (2) and a cooling water jacket (3), a water channel (4) is formed between the core (2) and the cooling water jacket (3), a multi-section joint core cooling assembly (5) is provided below the core sleeve (1), and the multi-section joint core cooling assembly (5) is connected to the core sleeve (1) via a supporting connector (6).

2. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 1 is characterized in that: The multi-stage joint core cooling assembly (5) comprises a front mold middle end cooling sleeve (7) and a front mold head cooling sleeve (8) arranged below the core sleeve (1), and the front mold middle end cooling sleeve (7) is connected to the supporting connecting piece (6).

3. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 2 is characterized in that: The outer side of the front mold middle end cooling jacket (7) is provided with a spiral cooling channel (88), and the spiral cooling channel (88) corresponds to the position of the front mold head cooling jacket (8).

4. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 3 is characterized in that: The front mold head cooling jacket (8) has a bottom communicating cavity (9) therein, and the bottom communicating cavity (9) is connected to the water channel (4).

5. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 4 is characterized in that: The outer side of the front mold head cooling sleeve (8) has a plurality of head cooling channels (10) distributed in a circular array along the center point of the front mold head cooling sleeve (8), and a connecting hole (11) is provided between two adjacent head cooling channels (10).

6. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 5, characterized in that: One of the head cooling channels (10) has a clearance notch (12) at the top.

7. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 6, characterized in that: The supporting connection member (6) comprises a supporting sleeve (13) arranged between the cooling sleeve (7) at the middle end of the front mold and the core sleeve (1), and a supporting platform (14) is arranged between the supporting sleeve (13) and the core sleeve (1).

8. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 7, characterized in that: A water outlet side hole is provided in the cooling water jacket (3), and the water outlet side hole is connected to the water channel (4).

9. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 8, characterized in that: The bottom of the mold core (2) is provided with a water outlet opening (15), and the side of the water outlet opening (15) is provided with a plurality of V-shaped grooves (16).

10. The high-speed PET preform mold multi-stage joint core cooling mechanism according to claim 9, characterized in that: A plurality of supporting ribs (17) are provided on the side of the mold core (2), and the supporting ribs (17) are in abutment with the cooling water jacket (3).

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