An efficient cooling upper die structure

Abstract

The utility model discloses an upper die structure of high -efficient cooling, including upper die water block, be provided with inside water channel, outside water channel in the upper die water block, the inside of upper die water block lower extreme is provided with diffusion waterway, at least one water inlet channel, the diameter of inside water channel, outside water channel all less than the outer diameter of diffusion waterway, outside water channel, water inlet channel, diffusion waterway, inside water channel are connected in proper order. The utility model can effectively enlarge the effective heat exchange area between cooling medium and bottle cap to have higher cooling efficiency to satisfy the demand of higher production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap manufacturing equipment, and in particular to an upper mold structure with high efficiency cooling. Background Technology

[0002] With economic development, plastic packaging is becoming increasingly common, leading to a surge in the use of bottle caps. Currently, mass production of bottle caps primarily utilizes compression molding. As compression molding machines for bottle caps undergo technological upgrades, the number of bottle caps that can be produced per unit time is gradually increasing, placing higher demands on compression molds (especially cooling systems). To improve production efficiency, it is essential to strengthen the cooling process during molding.

[0003] The cooling structure in the upper mold of existing compression molding dies, such as Figure 1 As shown, the device includes an upper mold water passage block 1 and an upper mold cooling pipe 6. The upper mold cooling pipe 6 has an inner water channel 2 inside. The upper mold cooling pipe 6 is fitted inside the upper mold water passage block 1 with a gap between them to form an outer water channel 3. The upper end of the outer water channel 3 is connected to the water inlet 11 via the upper mold shaft core 8 and the side water inlet pipe 9 in sequence. One end of the inner water channel 2 is connected to the lower end of the outer water channel 3, and the other end of the inner water channel 2 is connected to the water outlet 10 via the upper mold shaft core 8. The cooling medium flows through the water inlet 11, the outer water channel 3, the inner water channel 2, and the water outlet 10 in sequence, which can cool the upper mold. When the cooling medium flows to the lower end of the upper mold cooling pipe 6, it can also exchange heat with the bottle cap through the upper mold water passage block 1, thereby cooling and shaping the bottle cap, especially the bottom of the bottle cap. However, the inner diameter of the upper mold water passage block 1 remains constant from top to bottom. The heat exchange area between the cooling medium and the bottle cap is limited by the inner diameter of the upper mold water passage block 1, affecting the heat exchange effect. In particular, the lower end cross-section of the upper mold water passage block 1 is convex, and its outer diameter is much larger than its inner diameter. The effective heat exchange area between the cooling medium and the bottle cap is limited to the center of the bottle cap, making it difficult to cool the bottom and surrounding areas of the bottle cap. It takes a lot of time to cool the entire bottle cap through heat transfer, which greatly reduces the production efficiency of the bottle cap.

[0004] Therefore, although the existing mold structure has high cooling efficiency, its cooling rate is limited by the inner diameter of the upper mold water block, making it difficult to meet the demand for higher production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency cooling upper mold structure that can effectively expand the effective heat exchange area between the cooling medium and the bottle cap, thereby achieving higher cooling efficiency and meeting the needs of higher production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a high-efficiency cooling upper mold structure, including an upper mold water passage block, wherein an inner water channel and an outer water channel are provided inside the upper mold water passage block; a diffusion water channel and at least one water inlet channel are provided inside the lower end of the upper mold water passage block, wherein the diameters of the inner water channel and the outer water channel are both smaller than the outer diameter of the diffusion water channel, and the outer water channel, the water inlet channel, the diffusion water channel, and the inner water channel are connected in sequence.

[0008] Furthermore, the upper mold water passage block includes an upper mold water passage pipe, the diffusion water passage is disposed on the bottom surface of the lower end of the upper mold water passage pipe, the water inlet channel is opened at the lower end of the upper mold water passage pipe, and an upper mold cooling pipe is sleeved inside the upper mold water passage pipe with the gap between the two forming an outer water channel. The outer side of the lower end of the upper mold cooling pipe is sealed and sleeved with the inner side of the lower end of the upper mold water passage pipe, and the two ends of the upper mold cooling pipe are connected to form an inner water channel. In addition, the upper mold water passage pipe is provided with an upper mold inner plug block that can seal and wrap its lower end.

[0009] Furthermore, the diffusion water path includes an annular water passage and multiple return water passages. The water passage and return water passages are both located on the bottom surface of the lower end of the upper mold water pipe. The diameter of the water passage is larger than the diameter of the inner water channel, and the two ends of the return water passage are connected to the inner water channel and the water passage, respectively.

[0010] Furthermore, the multiple return water channels and the multiple inlet water channels are evenly and alternately distributed around the central axis of the upper mold water block.

[0011] Furthermore, the upper mold inner plug, outer water channel, upper mold cooling pipe, inner water channel, water passage, and upper mold water pipe are all coaxial.

[0012] Furthermore, a locking thread section is provided on the outer side of the lower end of the upper mold water pipe, and the upper mold water pipe is threadedly connected to the inner plug of the upper mold through the locking thread section.

[0013] Furthermore, a straight section with an outer diameter smaller than that of the locking thread section is provided between the locking thread section and the water passage.

[0014] Furthermore, a lower sealing element is fitted between the outer side of the lower end of the water pipe of the upper mold and the inner side of the inner plug of the upper mold.

[0015] Furthermore, steps are provided on both sides of the water passage and on the edge of the inner hole at the lower end of the upper mold water pipe.

[0016] Furthermore, the upper end of the upper mold water block is connected to an upper mold shaft core, the inner side of the upper mold shaft core is sealed and sleeved with the outer side of the upper end of the upper mold cooling pipe, and the upper mold shaft core is provided with a side water inlet pipe and a water outlet. One end of the side water inlet pipe is connected to the outer water channel, and the other end of the side water inlet pipe is provided with a water inlet. The water outlet is connected to the inner water channel.

[0017] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0018] This invention features a diffusion water channel at the lower end of the upper mold water block. The outer diameter of this diffusion water channel is larger than the diameters of the inner and outer water channels. When the cooling medium flows into the diffusion water channel sequentially through the outer water channel and the inlet channel, the cooling medium is distributed at the lower end of the upper mold water block, increasing the contact area between the cooling medium and the lower end of the upper mold water block. This results in a larger effective heat exchange area, improved cooling efficiency, and the ability to meet the demands of higher production efficiency.

[0019] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall sectional view of the existing upper mold cooling structure;

[0022] Figure 2 This is an overall sectional view of the present invention;

[0023] Figure 3 This is a cross-sectional view of the lower end of the upper mold water-passing block of this utility model;

[0024] Figure 4 This is a perspective view of the lower end of the water pipe of the upper mold of this utility model.

[0025] Reference numerals in the attached diagram: Upper mold water passage block-1, Upper mold water passage pipe-101, Locking thread section-1011, Straight section-1012, Upper mold inner plug-102, Inner water channel-2, Outer water channel-3, Diffusion water channel-4, Water passage-401, Return water channel-402, Water inlet channel-5, Upper mold cooling pipe-6, Lower seal-7, Upper mold shaft core-8, Side water inlet pipe-9, Water outlet-10, Water inlet-11, Upper seal-12. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figures 2 to 4 This utility model provides a high-efficiency cooling upper mold structure, including an upper mold water passage block 1. The upper mold water passage block 1 is provided with an inner water channel 2 and an outer water channel 3. Furthermore, the lower end of the upper mold water passage block 1 is provided with a diffusion water channel 4 and at least one water inlet channel 5. The diameters of the inner water channel 2 and the outer water channel 3 are both smaller than the outer diameter of the diffusion water channel 4. The outer water channel 3, the water inlet channel 5, the diffusion water channel 4, and the inner water channel 2 are connected in sequence, so that the cooling medium can flow through the lower end of the upper mold water passage block 1 and exchange heat, thereby cooling the bottle cap. During the process of the cooling medium flowing through the lower end of the upper mold water passage block 1, it is spread and dispersed by the diffusion water channel 4, which can increase the contact area between the cooling medium and the lower end of the upper mold water passage block 1, thereby obtaining a larger effective heat exchange area, effectively improving the cooling efficiency, and meeting the needs of higher production efficiency.

[0028] In this invention, the upper mold water passage block 1 includes an upper mold water passage pipe 101, a diffusion water channel 4 is disposed on the bottom surface of the lower end of the upper mold water passage pipe 101, and a water inlet channel 5 is opened at the lower end of the upper mold water passage pipe 101. Furthermore, an upper mold cooling pipe 6 is fitted inside the upper mold water passage pipe 101 with a gap forming an outer water channel 3. The outer surface of the lower end of the upper mold cooling pipe 6 is sealed to the inner surface of the lower end of the upper mold water passage pipe 101, and both ends of the upper mold cooling pipe 6 are connected to form an inner water channel 2. This prevents the cooling medium from flowing directly from the outer water channel 3 into the inner water channel 2, ensuring that the cooling medium flows sequentially along the route of the outer water channel 3, the water inlet channel 5, the diffusion water channel 4, and the inner water channel 2. Additionally, the upper mold water passage pipe 101 is provided with an upper mold inner plug block 102 that can seal and wrap its lower end, thereby enclosing the water inlet channel 5 and the diffusion water channel 4 inside the lower end of the upper mold water passage block 1, preventing the cooling medium from leaking to the outside during flow.

[0029] Preferably, the lower end of the upper mold cooling pipe 6 is interference-fitted or welded to the lower end of the upper mold water pipe 101, and the outer side and bottom surface of the lower end of the upper mold water pipe 101 are respectively attached to the inner side and inner bottom surface of the upper mold inner plug 102.

[0030] Preferably, the outer diameter of the lower end of the upper mold water pipe 101 is increased, so that the cross-section of the lower end of the upper mold water pipe 101 is convex, which can increase the bottom area of ​​the lower end of the upper mold water pipe 101, thereby increasing the outer diameter of the diffusion water channel 4, and thus obtaining a larger heat exchange area.

[0031] In this utility model, the diffusion water channel 4 includes an annular water passage 401 and multiple return water channels 402. The water passage 401 and the return water channels 402 are both opened on the bottom surface of the lower end of the upper mold water pipe 101. The diameter of the water passage 401 is larger than the diameter of the inner water channel 2. The two ends of the return water channel 402 are respectively connected to the inner water channel 2 and the water passage 401.

[0032] Preferably, the diameter of the water passage 401 is equal to the outer diameter of the lower end of the upper mold water pipe 101, so that when the cooling medium flows through the water passage 401, it can cool the side of the bottle cap through the side of the inner stopper 102 of the upper mold; the multiple return water passages 402 are equidistant from the inner water channel 2 and radially diverge, so that when the cooling medium flows through each return water passage 402, it can cool the bottom of the bottle cap through the bottom of the inner stopper 102 of the upper mold; the cooling medium flows into the water passage 401 from the water inlet passage 5, fills the entire water passage 401 and passes through the return water passage 401. After flowing into the inner water channel 2, the cooling medium can be effectively distributed to the entire bottom surface and part of the side surface of the lower end of the upper mold water pipe 101, thereby breaking through the limitation of the inner diameter of the upper mold water pipe 101 and expanding the effective heat exchange area. In addition, the process of the cooling medium flowing through the water channel 401 and then into the return water channel 402 not only effectively disperses the cooling medium, but also makes it possible for the end of the return water channel 402 away from the inner water channel 2 not to be aligned with the end of the water inlet channel 5 away from the outer water channel 3 during production, effectively reducing the difficulty of production.

[0033] Preferably, the water inlet channel 5 is inclined downward along the flow direction of the cooling medium; during the process of the cooling medium flowing through the outer water channel 3, the water inlet channel 5, and the water passage 401 to the return water channel 402, the flow direction of the cooling medium changes multiple times, which can effectively slow down the liquid flow velocity and thus prolong the heat exchange time. At the same time, the cooling medium that has been heated after heat exchange in the return water channel 402 flows directly out of the lower end of the upper mold water passage block 1 through the inner water channel 2, so that the cooling medium achieves the effect of slow inlet and fast outlet at the lower end of the upper mold water passage block 1, which can better perform heat exchange.

[0034] In this invention, multiple return water channels 402 and multiple inlet water channels 5 are evenly and alternately distributed around the central axis of the upper mold water block 1. By setting multiple inlet water channels 5, the flow of cooling medium from the outer water channel 3 to the water passage channel 401 can be shortened; furthermore, the return water channels 402 and the inlet water channels 5 are staggered, so that during the process of the cooling medium in the inlet water channel 5 flowing into the return water channel 402 through the water channel 401, the cooling medium must flow a certain distance along the arc direction of the water passage channel 401, which prolongs the time that the cooling medium stays in the water passage channel 401, and at the same time further expands the contact area between the cooling medium and the lower end of the upper mold water block 1.

[0035] In this invention, the inner plug 102 of the upper mold, the outer water channel 3, the upper mold cooling pipe 6, the inner water channel 2, the water passage 401, and the upper mold water pipe 101 are all coaxial, which can improve the uniformity of liquid flow and cooling.

[0036] In this utility model, the outer side of the lower end of the upper mold water pipe 101 is provided with a locking thread section 1011. The upper mold water pipe 101 is threadedly connected to the upper mold inner plug 102 through the locking thread section 1011, thereby achieving the effect of detachable connection between the upper mold water pipe 101 and the upper mold inner plug 102, which facilitates the fabrication and maintenance of the diffusion water channel 4 and the water inlet channel 5.

[0037] Optionally, the upper mold water pipe 101 and the upper mold inner plug 102 can also be connected in a detachable manner by means of snap-fit ​​or interference fit.

[0038] In this utility model, a straight section 1012 with an outer diameter smaller than that of the locking thread section 1011 is provided between the locking thread section 1011 and the water passage 401. This section can form a guide position, effectively ensuring the positional accuracy of the upper mold inner plug 102 and the lower end of the upper mold water pipe 101 after they are connected together, thus ensuring the quality of the upper mold water block 1.

[0039] In this invention, a lower sealing element 7 is fitted between the outer side of the lower end of the upper mold water pipe 101 and the inner side of the upper mold inner plug 102. The lower sealing element 7 is a rubber or silicone sealing ring, which can improve the sealing performance and reduce the possibility of cooling medium leaking to the outside from the gap between the outer side of the lower end of the upper mold water pipe 101 and the inner side of the upper mold inner plug 102.

[0040] In this invention, stepped positions are provided on both sides of the water passage 401 and on the edge of the lower end of the inner hole of the upper mold water pipe 101. The stepped positions have an annular sloping structure for guiding and improving the smoothness of the cooling medium flow. Furthermore, the stepped positions located on both sides of the water passage 401 also facilitate the assembly of the upper mold inner plug 102 and the upper mold water pipe 101.

[0041] In this invention, the upper end of the upper mold water-passing block 1 is connected to an upper mold shaft core 8. The inner side of the upper mold shaft core 8 is sealed and sleeved with the outer side of the upper end of the upper mold cooling pipe 6. The upper mold shaft core 8 is provided with a side water inlet pipe 9 and a water outlet 10. One end of the side water inlet pipe 9 is connected to the outer water channel 3, and the other end of the side water inlet pipe 9 is provided with a water inlet 11. The water outlet 10 is connected to the inner water channel 2. The water inlet 11, outer water channel 3, water inlet channel 5, water passage 401, water return channel 402, inner water channel 2, and water outlet 10 are connected in sequence. The water inlet 11 and water outlet 10 are connected to external refrigeration equipment through pipes, thereby realizing the circulation of the cooling medium and continuously cooling the upper mold water-passing block 1.

[0042] Preferably, an upper sealing element 12 is provided between the inner and outer sides of the upper mold core 8 and the outer side of the upper end of the upper mold water block 1. The upper sealing element 12 is a rubber or silicone sealing ring, which can improve the sealing performance and reduce the possibility of the cooling medium leaking to the outside from the gap between the inner and outer sides of the upper mold core 8 and the outer side of the upper end of the upper mold water block 1.

[0043] In use, this utility model connects the inlet 11 and outlet 10 to external refrigeration equipment via pipes. The cooling medium flows sequentially into the water passage 401 through the inlet 11, the outer water channel 3, and the inlet channel 5. After filling the entire water passage 401, it disperses into each return water channel 402. The cooling medium is spread out and dispersed, increasing its contact area and heat exchange area with the lower end of the upper mold water block 1. Furthermore, the cooling medium in the water passage 401 and each return water channel 402 absorbs the heat from the bottle cap through the inner stopper 102 of the upper mold, then flows into the inner water channel 2 and back to the external refrigeration equipment through the outlet 10, thereby achieving cooling of the bottle cap and effectively improving cooling efficiency, which can meet the needs of higher production efficiency.

[0044] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A high-efficiency cooling upper mold structure, comprising an upper mold water passage block (1), wherein the upper mold water passage block (1) is provided with an inner water channel (2) and an outer water channel (3); characterized in that: The lower end of the upper mold water block (1) is provided with a diffusion water channel (4) and at least one water inlet channel (5). The diameters of the inner water channel (2) and the outer water channel (3) are both smaller than the outer diameter of the diffusion water channel (4). The outer water channel (3), the water inlet channel (5), the diffusion water channel (4), and the inner water channel (2) are connected in sequence.

2. The high-efficiency cooling upper mold structure according to claim 1, characterized in that: The upper mold water passage block (1) includes an upper mold water passage pipe (101), the diffusion water passage (4) is provided on the bottom surface of the lower end of the upper mold water passage pipe (101), the water inlet channel (5) is opened at the lower end of the upper mold water passage pipe (101), and an upper mold cooling pipe (6) is fitted inside the upper mold water passage pipe (101) with a gap, and the gap between the two forms an outer water channel (3). The outer side of the lower end of the upper mold cooling pipe (6) is sealed and fitted with the inner side of the lower end of the upper mold water passage pipe (101), and the two ends of the upper mold cooling pipe (6) are connected to form an inner water channel (2). The upper mold water passage pipe (101) is provided with an upper mold inner plug block (102) that can seal and wrap its lower end.

3. The high-efficiency cooling upper mold structure according to claim 2, characterized in that: The diffusion water channel (4) includes an annular water passage (401) and multiple return water channels (402). The water passage (401) and the return water channels (402) are both located on the bottom surface of the lower end of the upper mold water pipe (101). The diameter of the water passage (401) is larger than the diameter of the inner water channel (2). The two ends of the return water channels (402) are connected to the inner water channel (2) and the water passage (401) respectively.

4. The high-efficiency cooling upper mold structure according to claim 3, characterized in that: Multiple return water channels (402) and multiple inlet water channels (5) are evenly and alternately distributed around the central axis of the upper mold water block (1).

5. The high-efficiency cooling upper mold structure according to claim 3 or 4, characterized in that: The upper mold inner plug (102), outer water channel (3), upper mold cooling pipe (6), inner water channel (2), water passage (401), and upper mold water pipe (101) are all coaxial.

6. The high-efficiency cooling upper mold structure according to any one of claims 2 to 4, characterized in that: The lower end of the upper mold water pipe (101) is provided with a locking thread section (1011), and the upper mold water pipe (101) is threadedly connected to the upper mold inner plug (102) through the locking thread section (1011).

7. The high-efficiency cooling upper mold structure according to claim 6, characterized in that: A straight section (1012) with an outer diameter smaller than that of the locking thread section (1011) is provided between the locking thread section (1011) and the water passage (401).

8. A high-efficiency cooling upper mold structure according to any one of claims 2 to 4, characterized in that: A lower sealing element (7) is fitted between the outer side of the lower end of the upper mold water pipe (101) and the inner side of the upper mold inner plug (102).

9. The high-efficiency cooling upper mold structure according to claim 3 or 4, characterized in that: Steps are provided on both sides of the water passage (401) and on the edge of the lower end of the inner hole of the upper mold water pipe (101).

10. A high-efficiency cooling upper mold structure according to any one of claims 1 to 4, characterized in that: The upper end of the upper mold water block (1) is connected to the upper mold shaft core (8). The inner side of the upper mold shaft core (8) is sealed to the outer side of the upper end of the upper mold cooling pipe (6). The upper mold shaft core (8) is provided with a side water inlet pipe (9) and a water outlet (10). One end of the side water inlet pipe (9) is connected to the outer water channel (3), and the other end of the side water inlet pipe (9) is provided with a water inlet (11). The water outlet (10) is connected to the inner water channel (2).

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