A mold base cooling system

Abstract

This utility model discloses a mold bottom cooling system, including a base and a mold core. The mold core is made of copper alloy and is fixedly mounted on the base. The base has a through hole, and the mold core has a cooling cavity in the middle. The outer periphery of the mold core has vent holes, which communicate with the cooling cavity. The cooling cavity includes a bottom wall with heat dissipation grooves. This utility model improves the cooling effect of the mold core by separating the traditional one-piece mold bottom into a base and a mold core. Furthermore, the mold core is made of copper alloy with better thermal conductivity, and a cooling cavity and vent holes are provided on the mold core, thereby reducing the risk of explosion of deep bottle bottoms.

Description

Technical Field

[0001] This utility model relates to production molds for glass bottles, and in particular to a mold bottom cooling system. Background Technology

[0002] Glass molds are specialized molds used to produce glass bottles and jars. The quality and production efficiency of glass bottle and jar products largely depend on the quality of the glass molds. When using pressure blowing or blow blowing methods to produce glass bottles with deep bottom protrusions, the existing forming process is prone to defects such as cracking due to the high temperature of the protruding part of the mold bottom. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a mold bottom cooling system to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is: a mold bottom cooling system, including a base and a mold core, the mold core being made of copper alloy and fixedly installed on the base, the base having a through hole, the mold core having a cooling cavity in the middle, the outer periphery of the mold core having an exhaust hole, the through hole communicating with the cooling cavity, the exhaust hole communicating with the cooling cavity, the cooling cavity including a bottom wall, and the bottom wall having a heat dissipation groove.

[0005] The beneficial effects of this utility model are: by separating the traditional one-piece mold bottom into a base and a mold core, and by using a copper alloy with better thermal conductivity for the mold core, and by setting a cooling cavity and an exhaust hole on the mold core, the cooling effect of the mold core can be improved, thereby reducing the risk of explosion of the deep bottle bottom.

[0006] As a further improvement to the above technical solution, the heat dissipation groove is a well-shaped groove. By setting the well-shaped groove, the heat dissipation area of ​​the bottom wall of the cooling cavity of the mold core can be significantly increased, thereby improving the heat dissipation effect.

[0007] As a further improvement to the above technical solution, the well-shaped groove includes several grooves, the depth of which is 3mm~5mm.

[0008] As a further improvement to the above technical solution, the width of the groove is 2.5mm~3.5mm, and the distance between two adjacent grooves is 2.5mm~3.5mm.

[0009] As a further improvement to the above technical solution, the angle between the axis of the exhaust hole and the horizontal line is α, where 14° < α < 20°.

[0010] As a further improvement to the above technical solution, the base includes a slot, the through hole is located in the slot, the mold core includes a connecting part, the connecting part is embedded in the slot, and the cooling cavity is located in the connecting part. The slot allows for a tighter connection between the base and the mold core, resulting in a more secure installation.

[0011] As a further improvement to the above technical solution, a connecting bolt is also included, which passes through the base and connects to the connecting part.

[0012] As a further improvement to the above technical solution, the base is provided with mounting and positioning holes.

[0013] As a further improvement to the above technical solution, a coolant device is also included. The coolant device includes a radiator, and a circulating water channel is provided on the base, which is connected to the radiator of the coolant device. The coolant device cools the base, thereby further reducing the temperature of the mold core.

[0014] As a further improvement to the above technical solution, the base is sealed to the mold core. In some embodiments, coolant from the coolant device can be introduced into the cooling chamber of the mold core for cooling. Compared to air cooling, cooling the mold core with coolant is more effective. To prevent coolant leakage, a sealing structure is provided between the base and the mold core. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the cooling system of this utility model;

[0017] Figure 2 This is a top view of the mold core of this utility model;

[0018] Figure 3 This is another embodiment of the present invention.

[0019] Figure label:

[0020] Base 100, through hole 110, mounting positioning hole 120, circulating water channel 130, mold core 200, connecting part 201, forming part 202, cooling cavity 210, bottom wall 211, vent hole 220, heat dissipation groove 230, connecting bolt 300, coolant device 400, template 500. Detailed Implementation

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model. Preferred embodiments of this utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, enabling a person to intuitively and vividly understand each technical feature and overall technical solution of this utility model, but they should not be construed as limiting the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. Furthermore, the various technical features in this invention can be combined interactively without contradicting each other.

[0025] With changing production demands, the glass bottle and jar industry is placing more and higher demands on the shape of glass bottles. In particular, there are special requirements for the shape of the bottle bottom. For example, the bottom of wine bottles or beverage bottles needs to be recessed into the bottle, and the recess needs to be relatively deep.

[0026] In existing glass bottle and jar manufacturing processes, the glass preform needs to pass through a preliminary mold and a final mold sequentially to gradually take shape. The glass preform flows into the preliminary mold to form a basic shape, and then enters the final mold for blowing to the desired shape. The mold material is basically vermicular graphite cast iron. When using a bottle-making machine to produce glass bottles and jars, the final mold is cooled by cold air blown from cooling nozzles located on both sides of the mold during the blowing process. However, the mold bottom, because it is located below the final mold and is mounted on a mold base, has no cooling air for it, and there is no venting device for the mold bottom. It can only cool itself, resulting in a high temperature at the mold bottom. This is especially true for bottle bottoms with deep concave structures. Because the mold bottom protrudes too much and has a large contact area with the glass, the temperature becomes excessively high, causing the protruding parts of the mold bottom to turn red and oxidize, making demolding difficult. Glass often sticks to the bottom during production, which is not conducive to the demolding of glass bottles and jars. Therefore, a large amount of mold release agent needs to be applied to demold. Excessive use of mold release agent causes contamination of the glass bottles and jars, affecting the appearance quality of the glass bottles. In addition, for deep-bottomed glass bottles, the thickness of the raised part is relatively large due to the distance between the center hole of the mold bottom and the highest point of the raised part. Therefore, the raised part is not cooled enough. If the thickness of the raised part of the mold bottom is reduced by increasing the depth of the center hole, the cooling air cannot be smoothly discharged from the cavity when it reaches the top of the center hole and cannot circulate. Therefore, the cooling effect is also not good.

[0027] In view of this, the present invention provides a mold bottom cooling system that can effectively cool the bottom of the mold for producing glass bottles, thereby overcoming various shortcomings in the prior art and improving the production quality of glass bottles (especially those with concave bottoms).

[0028] Specifically, refer to Figures 1-2 :

[0029] A mold bottom cooling system includes a base 100 and a mold core 200. The mold core 200 is made of copper alloy, and the base 100 is made of cast iron. The mold core 200 is fixedly mounted on the base 100 by bolts. The base 100 is generally disc-shaped, with a through hole 110 at its center, extending from bottom to top through the base 100. A connecting part 201 is located below the mold core 200, and a forming part 202 is located above it. The connecting part 201 and the forming part 202 are integrally formed. The shape of the forming part 202 is determined according to the shape of the bottom recess of the glass bottle to be produced; for example, it can be conical or a hexagonal frustum. A screw hole is provided on the bottom surface of the connecting part 201. The bottom surface of the connecting part 201 is tightly attached to the upper surface of the base 100, and a connecting bolt 300 passes through the base 100 and is threadedly connected to the connecting part 201.

[0030] At the intersection of the connecting portion 201 and the forming portion 202, the mold core 200 is provided with an inwardly recessed cooling cavity 210, which is located at the center of the connecting portion 201. A plurality of vent holes 220 are provided on the lower side of the forming portion 202. The outlets of the vent holes 220 are located on the outer peripheral surface of the forming portion 202, and the inlets of the vent holes 220 communicate with the cooling cavity 210. Furthermore, the cooling cavity 210 includes a bottom wall 211, which is close to the forming portion 202 and away from the connecting portion 201. Heat dissipation grooves 230 are provided on the bottom wall 211.

[0031] Compared with existing technologies, this invention separates the traditional one-piece mold base structure into two independent bases and a mold core. The mold core is made of a copper alloy with better thermal conductivity, while the base can be made of traditional cast iron. Since only the mold core contacts the bottom of the glass bottle during production, the excellent thermal conductivity of the mold core allows for higher cooling efficiency of the glass bottle after production, resulting in better production quality. Furthermore, this invention also incorporates a cooling cavity 210, an vent 220, and a heat dissipation groove 230 on the mold core 200, further enhancing the cooling effect of the mold core 200 and reducing the risk of explosion from deep bottle bottoms.

[0032] During glass bottle production, an external cooling fan blows cooling air through the through-hole 110 of the base 100 into the mold core 200. The cooling air then enters the cooling chamber 210, where heat dissipation grooves 230 allow for sufficient heat exchange between the cooling air and the molding section 202, thereby cooling the molding section 202. After sufficient cooling, the molding section 202 no longer adheres to the bottom of the glass bottle, and the bottom of the glass bottle is effectively cooled, reducing the risk of cracking in deep-bottomed bottles and facilitating demolding. Finally, the cooled air, having completed heat exchange, is discharged from the exhaust port 220.

[0033] As a further preferred embodiment, the heat dissipation groove 230 is a well-shaped groove. See also Figure 2 The well-shaped groove includes several square grooves, each with a depth of 3mm to 5mm and a width of 2.5mm to 3.5mm. The spacing between any two adjacent grooves is 2.5mm to 3.5mm. For example, in this embodiment, the groove width is 3mm and the groove depth is 4mm. By arranging several grooves in rows and columns on the bottom wall 211 of the cooling chamber 210, a pitted and uneven heat dissipation groove is formed on the surface of the bottom wall 211. When cooling air enters the cooling chamber, it circulates in the heat dissipation groove, thereby maximizing the removal of heat from the molding part 202 and improving the heat dissipation effect of the mold bottom.

[0034] See Figure 1 As a further preferred embodiment, the exhaust port 220 is a straight hole, and the angle between the axis of the exhaust port 220 and the horizontal line is α, where 14° < α < 20°. The exhaust port 220 gradually slopes upward from the inside to the outside, with the inner side of the exhaust port 220 close to the bottom wall 211 of the cooling chamber 210, while the outer side of the exhaust port 220 is higher than the bottom wall 211 of the cooling chamber 210. This arrangement allows the cooling air to remain in the cooling chamber for a longer time, resulting in more thorough heat exchange between the cooling air and the forming part 202. Furthermore, the slightly upward-sloping exhaust port ensures smoother exhaust flow.

[0035] As a further preferred embodiment, the base 100 includes a slot, the through hole 110 is located in the slot, and the connecting part 201 of the mold core 200 is embedded in the slot. Through the slot, the connection between the base and the mold core can be made tighter and the installation more secure.

[0036] As a further preferred embodiment, the base 100 is provided with mounting positioning holes 120. The mounting positioning holes 120 allow the base 100 to be accurately mounted on the base plate of the molding machine.

[0037] See Figure 3 As a further preferred embodiment, the system also includes a coolant device 400, which includes a radiator. A circulation channel 130 is provided on the base 100, and the circulation channel 130 is connected to the radiator of the coolant device 400. Correspondingly, the coolant device 400 also includes an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the radiator, and the other end is connected to the circulation channel 130. Similarly, one end of the outlet pipe is connected to the radiator, and the other end is connected to the circulation channel 130. During operation, a circulation pump is installed in the coolant device, allowing the coolant to circulate between the radiator and the base. The coolant carries heat from the base 100 to the radiator, and then the radiator carries the heat away. This cycle repeats continuously, maintaining the base 100 at a lower temperature, thereby improving the heat dissipation efficiency of the mold core 200. In addition, for ease of installation, the base 100 can be installed on the template 500 of the molding machine, and the inlet and outlet pipes of the coolant device are connected to the template 500. Correspondingly, the circulating water channel 130 is also connected to the template 500.

[0038] As a further preferred embodiment, the base 100 is sealed to the mold core 200. In some embodiments, the cooling medium for the mold core 200 may not be air, but may be coolant. For example, coolant from a coolant device can also be introduced into the cooling chamber 210 to cool the molding part 202. Using coolant for cooling can achieve more precise temperature control and higher cooling efficiency. Therefore, it is necessary to seal the base 100 to the mold core 200 to prevent coolant leakage.

[0039] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A mold bottom cooling system, characterized in that: The device includes a base and a mold core. The mold core is made of copper alloy and is fixedly mounted on the base. The base has a through hole, and the mold core has a cooling cavity in the middle. The outer periphery of the mold core has an exhaust hole. The through hole communicates with the cooling cavity, and the exhaust hole communicates with the cooling cavity. The cooling cavity includes a bottom wall, and the bottom wall has a heat dissipation groove.

2. The mold bottom cooling system according to claim 1, characterized in that: The heat dissipation groove is a well-shaped groove.

3. The mold bottom cooling system according to claim 2, characterized in that: The well-shaped groove includes several grooves, the depth of which is 3mm to 5mm.

4. The mold bottom cooling system according to claim 3, characterized in that: The width of the groove is 2.5mm to 3.5mm, and the distance between any two adjacent grooves is 2.5mm to 3.5mm.

5. The mold bottom cooling system according to claim 1, characterized in that: The angle between the axis of the exhaust port and the horizontal line is α, where 14° < α < 20°.

6. The mold bottom cooling system according to claim 1, characterized in that: The base includes a slot, the through hole is located in the slot, the mold core includes a connecting part, the connecting part is embedded in the slot, and the cooling cavity is located in the connecting part.

7. The mold bottom cooling system according to claim 6, characterized in that: It also includes connecting bolts, which pass through the base and connect to the connecting part.

8. The mold bottom cooling system according to claim 1, characterized in that: The base is provided with mounting and positioning holes.

9. The mold bottom cooling system according to claim 1, characterized in that: It also includes a coolant device, which includes a radiator, and the base is provided with a circulating water channel, which is connected to the radiator of the coolant device.

10. The mold bottom cooling system according to claim 9, characterized in that: The base is sealed to the mold core.

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