A conformal cooling water channel structure for the bottom mold of a carbonated bottle

Abstract

This invention discloses a conformal cooling water channel structure for a carbonated bottle bottom mold, including a bottom mold, a water sealing plate connected to the bottom mold, and a water sealing plate. The bottom surface of the bottom mold has a central water inlet, and multiple grooves are spaced around the central water inlet. Each groove surface has a primary distribution channel and a secondary distribution channel. A converging channel is also provided between the grooves. The primary distribution channels are connected to the converging channel through the secondary distribution channels, and an outlet is provided within the converging channel. The upper surface of the water sealing plate has protrusions that mate with the grooves, as well as water inlet and outlet channels. The structure includes the central water inlet, the primary distribution channels extending outward from the central water inlet, the two secondary distribution channels extending outward from the ends of the primary distribution channels, the converging channel formed by the converging of the two secondary distribution channels of adjacent primary distribution channels, and the outlet at the end of the converging channel. This invention helps improve the heat dissipation conditions of the carbonated bottle bottom mold during operation, specifically resulting in faster and more uniform heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of blow molding, and more specifically to a conformal cooling water channel structure for the bottom mold of a carbonated bottle. Background Technology

[0002] Currently, the main processing technology for beverage bottles is stretch blow molding. Before stretch blow molding, the preform is heated to a certain molding temperature. Under the pressure of high-pressure gas, the preform is bonded to the mold to complete the molding process. Before the preform is demolded, the material temperature needs to be reduced to below the demolding temperature; otherwise, the integrity of the beverage bottle's appearance will be affected. During the continuous production of beverage bottles, a large amount of heat is transferred to the mold. To ensure smooth heat dissipation, cooling channels need to be installed in the mold.

[0003] Carbonated beverage bottles are beverage bottles with a special bottom shape used for packaging carbonated drinks. Compared to ordinary beverage bottles, they have a five-lobed bottom structure. Correspondingly, the bottom mold structure used to produce carbonated beverage bottles is also more complex, specifically featuring five protruding ribs extending into the mold cavity. During heat dissipation, the heat from these ribs is more difficult to transfer to the coolant.

[0004] The main factors affecting the heat dissipation performance of cooling channels include: channel length, channel width, distance between the channel and the inner surface of the mold cavity, and channel shape and structure. Traditional conformal cooling channels are spiral-shaped and arranged on the bottom surface of the mold. While this type of channel is densely packed, it cannot provide uniform heat dissipation because the distance between the cooling channels and the ribs of the carbonate bottle mold bottom is relatively large, thus reducing its heat dissipation performance. Using improved conformal cooling channels can improve heat dissipation conditions, thereby increasing bottle production efficiency and product quality.

[0005] In the cooling structure of carbonated bottle bottom molds with a capacity of 2000ML or more (CN201120111110.7), a combined cooling channel was designed, connecting a spiral water channel on the bottom surface of the bottom mold and an annular groove on the outer cylindrical surface of the bottom mold, which enhanced the cooling performance of the sidewalls of the carbonated bottle bottom mold. However, in this structure, the water flow of the cooling channel enters from one side of the annular groove and exits from the other side, and the connecting holes between the spiral water channel and the annular groove are not symmetrically distributed about the inner surface of the bottom mold. This leads to inconsistent cooling rates in different areas of the bottom mold, resulting in a certain temperature difference between different areas of the bottom mold, which to some extent affects the performance of the molded bottle bottom. The cooling channel structure proposed in this paper has symmetry and reduces the average distance between the water channel and the inner surface of the mold cavity, which can improve the uniformity of bottom mold cooling. The bottom surface of traditional bottom molds is relatively flat, which prevents the cooling channels from being close to the surface of the mold cavity. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention provides a conformal cooling water channel structure for the bottom mold of a carbonate bottle.

[0007] The present invention is achieved by at least one of the following technical solutions.

[0008] A conformal cooling water channel structure for a carbonated bottle bottom mold includes a bottom mold, a water sealing plate connected to the bottom mold, and a water sealing plate cover plate located on the bottom surface of the water sealing plate. The bottom surface of the bottom mold has a central water inlet, and multiple grooves are distributed around the central water inlet at intervals. Each groove surface has a primary distribution channel and a secondary distribution channel. A converging channel is also provided between the grooves. The primary distribution channel is connected to the converging channel through the secondary distribution channel. A water outlet is provided in the converging channel. The upper surface of the water sealing plate has protrusions that cooperate with the grooves, as well as water inlet and water outlet channels.

[0009] Furthermore, each groove includes two lateral inclined surfaces and a central inclined surface, the central inclined surface being approximately rectangular in shape, with one side of the central inclined surface being tangent to the lateral surface of the central inlet.

[0010] Furthermore, the central water inlet is a cylindrical structure, located at the center of the bottom surface of the bottom mold, and perpendicular to the bottom surface.

[0011] Furthermore, the primary diversion channel is located in the central inclined surface and has a rectangular cross-section; the inlet section of the primary diversion channel is connected to the side of the central inlet, and the cross-sectional area of ​​the primary diversion channel is less than or equal to one-fifth of the cross-sectional area of ​​the central inlet.

[0012] Furthermore, the secondary diversion channel is located in the two inclined surfaces on the sides, and its cross-section is rectangular; the angle formed between the starting point of the secondary diversion channel and the primary diversion channel is greater than 90°, and the cross-sectional area of ​​the secondary diversion channel is less than or equal to half of the cross-sectional area of ​​the primary diversion channel.

[0013] Furthermore, the converging flow channel is located on the bottom surface of the bottom mold, the starting point of the converging flow channel is located below the deepest part of the bottom mold claw, the direction of the converging flow channel is towards the central axis of the bottom mold, and the cross-section is rectangular; the cross-sectional area of ​​the converging flow channel is not greater than twice the cross-sectional area of ​​the secondary branch channels on both sides.

[0014] Furthermore, the corners connecting the confluence channel and the secondary branch channel are rounded.

[0015] Furthermore, the outlet is cylindrical and perpendicular to the bottom surface of the mold, and the cross-sectional area of ​​the outlet is approximately equal to the cross-sectional area of ​​the confluence channel.

[0016] Furthermore, the upper surface of the water sealing plate is provided with multiple connection holes, which are connected to the water outlets respectively.

[0017] Furthermore, a water-sealing plate cover is provided on the lower surface of the water-sealing plate.

[0018] Compared with existing technologies, the beneficial effects of the present invention are as follows:

[0019] This invention features an inclined surface embedded into the mold cavity on the bottom mold, reducing the distance between the bottom surface of the bottom mold and the raised ribs. The cooling channels established on the inclined surface have a shape that better conforms to the shape of the mold cavity, thereby increasing the heat dissipation efficiency of the bottom mold. Simultaneously, the cooling channels are distributed in a central array, resulting in a more uniform heat dissipation rate across the entire bottom mold.

[0020] Compared with traditional bottom mold cooling channels, the improved conformal cooling channels can improve heat dissipation, thereby increasing bottle production efficiency and product quality. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a perspective view of the bottom mold of the carbonated bottle according to an embodiment of the present invention;

[0023] Figure 2 This is a top view of the bottom mold of the carbonated bottle according to an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the bottom mold of the carbonated bottle according to an embodiment of the present invention;

[0025] Figure 4 This is a structural diagram of the bottom mold of the carbonated bottle according to an embodiment of the present invention;

[0026] Figure 5 This is a perspective view of the water sealing plate according to an embodiment of the present invention;

[0027] Figure 6 This is a structural diagram of the water sealing plate according to an embodiment of the present invention;

[0028] Figure 7 This is a top view of the water sealing plate according to an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of the water sealing plate according to an embodiment of the present invention;

[0030] Figure 9 This is a structural diagram of the water-sealing plate cover according to an embodiment of the present invention;

[0031] Figure 10 This is a top view of the water-sealing plate cover according to an embodiment of the present invention;

[0032] Figure 11 This is a structural diagram of a conformal cooling water channel for a bottom mold of a carbonate bottle according to an embodiment of the present invention;

[0033] Figure 12 This is a structural diagram of the assembly according to an embodiment of the present invention;

[0034] In the figure, 1-bottom surface of the bottom mold, 2-central inclined surface, 3-side inclined surface, 4-central water inlet, 5-primary branch channel, 6-secondary branch channel, 7-merging channel, 8-water outlet, 9-protrusion, 10-water inlet, 11-connecting hole, 12-C-groove, 13-water outlet, 14-sealing plate cover, 15-C-shaped boss. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1-12 As shown, the conformal cooling water channel structure of a carbonate bottle bottom mold in this example includes a bottom mold, a water sealing plate connected to the bottom mold, and a water sealing plate cover 14 located on the bottom surface of the water sealing plate. A central water inlet 4 is provided at the center of the bottom surface 1 of the bottom mold. Multiple grooves are distributed around the central water inlet 4 at intervals. Each groove surface is provided with a primary flow channel 5 and a secondary flow channel 6. A converging flow channel 7 is also provided between the grooves. The primary flow channel 5 is connected to the converging flow channel 7 through the secondary flow channel 6. A water outlet 8 is provided in the converging flow channel 7.

[0037] Each groove includes two inclined surfaces and a central inclined surface 2, which is an inclined surface embedded into the mold cavity. The primary distribution channel 5 is located on the bottom surface of the groove, i.e., the central inclined surface 2. The secondary distribution channels 6 are located in the two side inclined surfaces and the central inclined surface 2. The central inclined surface 2, the primary distribution channel 5, the two side secondary distribution channels 6, the converging channel 7, and the outlet 8 are all arranged in a circular array about the central axis of the bottom mold, and their number is equal to the number of bottom grooves of the carbonate bottle corresponding to the bottom mold of the carbonate bottle. The starting point of the primary distribution channel 5 is the central inlet 4. The starting point of the two side secondary distribution channels 6 is the end of the primary distribution channel 5. The starting point of the converging channel 7 is the end of the two side secondary distribution channels 6 adjacent to the primary distribution channel 5. The outlet is located at the end of the converging channel 7. The bottom mold structure of the present invention is significantly different from the original structure. By increasing the total length of the cooling water channels, reducing the distance between the cooling water channels and the inner surface of the mold cavity, and improving the symmetrical distribution of the cooling water channels, the present invention helps to improve the heat dissipation conditions of the carbonate bottle bottom mold during operation, specifically manifested in faster heat dissipation and more uniform heat dissipation. This reduces heat dissipation time, thereby increasing the production efficiency and product quality of carbonated bottles.

[0038] like Figures 1 to 3As shown, the central water inlet 4 is located at the center of the bottom surface 1 of the bottom mold. The cross-section of the central water inlet 4 is circular, and its central axis and side surface are perpendicular to the bottom surface 1 of the bottom mold.

[0039] In a preferred embodiment, the diameter of the central inlet 4 is 20mm to 30mm, preferably 24mm. The depth of the central inlet 4 from the bottom surface 1 of the bottom mold is preferably 4mm.

[0040] like Figures 2 to 3 As shown, the central inclined surface 2 is approximately rectangular in shape. One side of the central inclined surface 2 is tangent to the side surface of the central inlet 4, and this side also belongs to the bottom surface 1 of the bottom mold. The intersection of the central inclined surface 2 and the side surface of the bottom mold forms another side of the surface. The other two sides of the central inclined surface 2 are parallel to each other, and the distance between the two sides is preferably 9 mm, forming a line that intersects with the two side inclined surfaces 3. The closest distance between the central inclined surface 2 and the bottom mold cavity surface is in the range of 5-10 mm.

[0041] like Figure 3 As shown, the angle between the central inclined surface 2 and the bottom surface 1 of the bottom mold is 40° to 50°. The axis of symmetry of the central inclined surface 2 also belongs to the axis of symmetry of the corresponding rib in the carbonate bottle mold cavity.

[0042] like Figure 2 As shown, the two inclined surfaces 3 are planes, connected to the central inclined surface 2, the bottom surface 1 of the bottom mold, and the side surface of the bottom mold, and are symmetrical about the axis of symmetry of the central inclined surface 2.

[0043] In a preferred embodiment, the included angle formed by the two inclined surfaces 3 is in the range of 60° to 80°, preferably 70°.

[0044] like Figures 1 to 2 As shown, the inlet of the primary diversion channel 5 is located on the side of the central inlet 4, on the central inclined surface 2, with a rectangular cross-section. The height of the inlet is the depth of the central inlet 4, and the inlet cross-section is tangent to the side of the central inlet 4. Its cross-sectional area is no greater than one-fifth of the cross-sectional area of ​​the central inlet 4. The main body of the primary diversion channel 5 is a cuboid groove, the bottom surface of which is parallel to the central inclined surface 2 and has the same width. The depth of the groove allows the primary diversion channel 5 to connect with the edge of the central inlet 4.

[0045] In a preferred embodiment, the length of the primary distribution channel is 30 mm.

[0046] like Figures 1 to 2As shown, each secondary flow channel 6 has a rectangular cross-section, divided into three sections: a starting section, a middle section, and a ending section. The starting and middle sections are located on the two inclined surfaces 3, and the ending section is located on the bottom surface 1 of the mold base, with its bottom surface parallel to both inclined surfaces 3 and the bottom surface 1 of the mold base, respectively. The depth of the two secondary flow channels 6 is equal to that of the primary flow channel 5, and its cross-sectional area is no greater than half that of the primary flow channel 5. The side surface of the starting section of the two secondary flow channels 6 is coplanar with the top surface of the primary flow channel 5. In space, the primary flow channel 5 forms a 90° angle with the starting sections of the two secondary flow channels 6. The middle section of the two secondary flow channels 6 is perpendicular to the bottom surface 1 of the mold base and forms an angle with the starting section. As a preferred embodiment, the length of the starting section of the primary flow channel 5 is 10 mm.

[0047] like Figures 1 to 3 As shown, the confluence channel 7 is located on the bottom surface 1 of the bottom mold, and its bottom surface is parallel to the bottom surface 1 of the bottom mold. The direction of the confluence channel 7 points to the central axis of the bottom mold. The cross-section of the confluence channel 7 is rectangular, and its depth is equal to the depth of the two secondary branch channels 6. The cross-sectional area is no more than twice that of the two secondary branch channels 6. The central axis of the confluence channel 7 forms a 54° angle with the termination section of the two secondary branch channels 6. The connecting corners are rounded to increase the fluidity of the confluence coolant.

[0048] like Figures 1 to 3 As shown, the outlet 8 is located at the end of the confluence channel 7, its diameter is equal to the width of the confluence channel 7, and its cross-section is circular. The side of the outlet 8 is perpendicular to the bottom surface 1 of the bottom mold and tangent to the side surface of the confluence channel 7.

[0049] like Figures 5-8 As shown, the water sealing plate is provided with an inlet channel 10 and an outlet channel 13. Multiple protrusions 9 are distributed on the upper surface of the water sealing plate. A connection hole 11 is provided on the upper surface of the water sealing plate, and a C-groove 12 is provided on the lower surface of the water sealing plate.

[0050] like Figure 5 As shown, the protrusion 9 is located on the upper surface of the water sealing plate, and its shape and number are the same as the groove of the bottom mold.

[0051] like Figures 11 to 12 As shown, after the protrusion 9 is assembled with the groove of the bottom mold, there is no gap.

[0052] like Figure 8As shown, the water inlet channel 10 is divided into two sections: a horizontal section and a vertical section. The vertical section is located at the center of the water sealing plate, and its depth is preferably 17mm. The horizontal section is located below the protrusion 9, and its axis belongs to the plane of symmetry of the protrusion 9. The side surface of the water sealing plate is connected to the vertical section through the horizontal section. The horizontal and vertical sections are interconnected, and the angle between their axes is perpendicular. The bottom surface of the vertical section is tangent to the side surface of the horizontal section. The cross-sections of both the horizontal and vertical sections of the water inlet channel 10 are circular, and their diameter is preferably 14mm.

[0053] like Figures 2-7 As shown, the shape, number, and diameter of the connecting hole 11 are all equal to those of the water outlet 8, and the axis of the connecting hole 11 coincides with that of the water outlet 8.

[0054] like Figure 12 As shown, after the water sealing plate and the bottom mold are assembled, the axis of the connecting hole 11 coincides with the water outlet 8.

[0055] like Figures 6 to 8 As shown, the C-groove 12 is symmetrical about the vertical plane containing the axis of the horizontal section of the water inlet 10. The inner surface of the C-groove 12 is tangent to the inner surface of the connecting hole 11. The width of the C-groove is preferably 14 mm, and its depth is preferably 18 mm. The side surface of the C-groove 12 is perpendicular to the bottom surface of the water sealing plate, and its bottom surface is horizontal to the bottom surface of the water sealing plate. The inner and outer surfaces of the C-groove 12 are parallel, and the two end surfaces are parallel and tangent to the side surface of the connecting hole 11. A 5 mm rounded corner is made at the junction of the outer surface of the C-groove and the two end surfaces.

[0056] like Figures 7 to 8 As shown, the C-groove 12 and the connecting hole 11 are interconnected, and the length of the connecting hole 11 is preferably 2mm.

[0057] like Figure 8 As shown, the axis of the water outlet 13 is horizontal. The axis of the water outlet 13 belongs to the vertical plane containing the axis of the horizontal section of the water inlet 10. The water outlet 13 and the C-groove 12 are interconnected. The distance between the axis of the water outlet 13 and the lower surface of the sealing plate is preferably 9 mm. The cross-section of the water outlet 13 is circular, and its diameter is preferably 14 mm.

[0058] like Figures 9 to 10 As shown, the water sealing plate cover 14 is provided with a C-shaped protrusion 15.

[0059] like Figure 7 and Figure 10 As shown, the C-shaped boss 15 has the same shape as the C-shaped groove 12 and is connected to the C-shaped groove 12.

[0060] like Figures 11 to 12As shown, after the water sealing plate cover 14 is assembled with the water sealing plate, the upper surface of the C-shaped boss 15 is tangent to the surface of the water outlet 13.

[0061] After the bottom mold, water sealing plate, and water sealing plate cover are assembled, the external coolant first flows in from the water inlet 10 and then flows to the central water inlet 4. At this time, the water flow is divided into five streams and flows into the primary distribution channel 5. For the water flow in each primary distribution channel 5, it is divided into two streams at the end of the channel and flows into their respective secondary distribution channels 6. The water flow in the secondary distribution channels 6 between adjacent grooves merges into the same converging channel 7. The water flow in the converging channel flows to the water outlet 8 and leaves the bottom mold. After passing through the connecting hole 11, it enters the C-groove 12 to merge. The water flow in the C-groove 12 finally flows out from the water outlet 13.

[0062] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A conformal cooling water channel structure for the bottom mold of a carbonated bottle, characterized in that: The system includes a bottom mold, a water sealing plate connected to the bottom mold, and a water sealing plate cover (14) located on the bottom surface of the water sealing plate. The bottom surface (1) of the bottom mold is provided with a central water inlet (4). Multiple grooves are distributed around the central water inlet (4) at intervals. Each groove surface is provided with a primary diversion channel (5) and a secondary diversion channel (6). A converging channel (7) is also provided between the grooves. The primary diversion channel (5) is connected to the converging channel (7) through the secondary diversion channel (6). An outlet (8) is provided in the converging channel (7). The upper surface of the water sealing plate is provided with protrusions (9) that cooperate with the grooves, as well as a water inlet channel (10) and a water outlet channel (13). Each groove includes two lateral inclined surfaces and a central inclined surface (2). The central inclined surface (2) is rectangular in shape, and one side of the central inclined surface (2) is tangent to the side surface of the central inlet (4). The primary diversion channel (5) is located in the central inclined surface (2), the secondary diversion channel (6) is located in the two lateral inclined surfaces, and the confluence channel (7) is located on the bottom surface (1) of the bottom mold. The starting point of the confluence channel (7) is located below the deepest part of the bottom mold claw, and the direction of the confluence channel (7) points to the central axis of the bottom mold.

2. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The central water inlet (4) is a cylindrical structure, located at the center of the bottom surface of the bottom mold and perpendicular to the bottom surface.

3. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The cross-section of the primary diversion channel (5) is rectangular; the inlet section of the primary diversion channel (5) is connected to the side of the central inlet (4), and the cross-sectional area of ​​the primary diversion channel (5) is less than or equal to one-fifth of the cross-sectional area of ​​the central inlet (4).

4. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The cross-section of the secondary diversion channel (6) is rectangular; the angle between the starting point of the secondary diversion channel (6) and the primary diversion channel (5) is greater than 90°, and the cross-sectional area of ​​the secondary diversion channel (6) is less than or equal to half of the cross-sectional area of ​​the primary diversion channel (5).

5. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The cross-section of the merging channel (7) is rectangular; the cross-sectional area of ​​the merging channel (7) is no more than twice the cross-sectional area of ​​the two secondary branch channels (6).

6. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The corner connecting the confluence channel (7) and the secondary branch channel (6) is rounded.

7. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The outlet (8) is cylindrical and perpendicular to the bottom surface (1) of the bottom mold. The cross-sectional area of ​​the outlet (8) is equal to the cross-sectional area of ​​the confluence channel (7).

8. The conformal cooling water channel structure of the bottom mold of the carbonated bottle according to claim 1, characterized in that: The upper surface of the sealing plate is provided with multiple connection holes (11), and the multiple connection holes (11) are connected to the water outlet (8) respectively.

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