Glass mold punch device

Abstract

The utility model discloses a glass mold punch device which comprises a base, a through hole is formed in the base, a punch is arranged in the through hole, the punch is connected with the base in a sliding mode, the glass mold punch device further comprises an air blowing mechanism, the air blowing mechanism is arranged on the through hole, the air blowing mechanism blows out inert gas, and the inert gas is blown out by the air blowing mechanism. And the inert gas can cover the outside of the punch. The air blowing mechanism is arranged above the punch, the inert gas is blown out through the air blowing mechanism, the punch is covered with the inert gas, a layer of gas hood is formed on the punch through the inert gas, the punch is isolated from air, and therefore the surface of the punch is effectively prevented from being oxidized, the service life of the punch is prolonged, and the service life of the punch is prolonged. The service life of the punch is prolonged; and the production quality of glass is improved.

Description

Technical Field

[0001] The utility model relates to glass bottle production equipment, in particular to a glass mold punch device used in glass bottle production. Background Art

[0002] During the glass bottle manufacturing process, the punch mechanism's primary functions include forming the bottle mouth and end faces, as well as creating air pockets. These functions are crucial to ensuring the structural integrity and sealing of the glass bottle. During production, the punch component directly contacts the raw glass, with temperatures reaching over 600°C. Traditional punches are made of cast iron, which reacts with oxygen in the air at high temperatures to produce iron oxide, forming a scale. This scale's expansion coefficient is inconsistent with that of the cast iron substrate, causing it to loosen and fall off, damaging the punch component's surface quality and severely impacting the quality of glass production. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a glass mold punch device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution provided by the utility model to the technical problem is: a glass mold punch device, comprising a base, a through hole provided in the base, a punch provided in the through hole, the punch being slidably connected to the base, and a blowing mechanism provided on the through hole, the blowing mechanism blowing out an inert gas, and the inert gas being able to cover the outside of the punch.

[0005] The beneficial effect of the present invention is as follows: the present invention provides an air blowing mechanism above the punch, blows out inert gas through the air blowing mechanism, and makes the inert gas cover the outside of the punch, and utilizes the inert gas to form a layer of air cover on the punch, isolating the punch from the air, thereby effectively preventing the surface oxidation of the punch, extending the service life of the punch and improving the production quality of glass.

[0006] As a further improvement to the above technical solution, the blowing mechanism includes a plurality of air outlets, which are distributed annularly on the blowing mechanism. By providing a plurality of air outlets, the inert gas can be evenly distributed around the punch, thereby forming a more stable gas hood.

[0007] As a further improvement to the above technical solution, the blowing mechanism includes a cover body having a circular hole therein, the circular hole corresponding to the through hole, and the gas outlets distributed around the circumferential wall of the circular hole. The cover body is a disc-shaped component, and by providing a pipeline and gas inlet inside the cover body, the inert gas is ejected from the inner circumferential wall of the cover body, thereby improving the molding quality of the gas hood.

[0008] As a further improvement to the above technical solution, a return port is further provided on the peripheral wall of the circular hole, and the return port is provided below the gas outlet. By providing the return port, the ejected inert gas can be recycled, reducing the loss of inert gas and improving economic efficiency.

[0009] As a further improvement to the above technical solution, the opening of the gas outlet is inclined upward, and the opening of the gas return port is inclined downward. Since inert gas is generally heavier than air, the upward inclination of the gas outlet allows the gas to be ejected upward and then coat the outer surface of the punch. Excess gas sinks downward under the action of gravity and flows back out of the gas return port.

[0010] As a further improvement to the above technical solution, a piston rod is provided in the through hole, and the piston rod is fixedly connected to the punch by a clamp ring. The piston rod drives the punch to move up and down, and the clamp ring is used to mount the piston rod and the punch, so that the punch can be quickly replaced.

[0011] As a further improvement of the above technical solution, it also includes an air supply system, which is connected to the blowing mechanism.

[0012] As a further improvement to the above technical solution, the gas supply system includes a control unit, which includes a flow meter, a pressure gauge, and a control valve. The control unit is used to adjust the flow rate and pressure of the blowing mechanism. To form a stable and reliable air hood, it is necessary to regulate the gas injection volume and pressure of the blowing mechanism.

[0013] As a further improvement to the above technical solution, the gas supply system also includes a gas detector, a safety valve, and a shut-off device. The gas detector detects the concentration of inert gas in the environment, and the safety valve and shut-off device are used to shut off the gas supply to the gas supply system. By providing a gas detector, the safety valve and shut-off device can shut off the gas source in the event of a gas leak or other emergency, thereby interrupting the supply of inert gas.

[0014] As a further improvement to the above technical solution, the inert gas is argon. The specific heat capacity of argon is approximately 0.52 kJ / (kg.K), while the specific heat capacity of air is 1.0 kJ / (kg.K). Argon has a lower thermal conductivity than air. Using argon not only isolates the punch surface from oxygen in the air but also reduces the transfer of heat from the molten glass to the punch, maintaining a stable surface temperature and further increasing the punch's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also derive other design solutions and drawings based on these drawings without inventive effort.

[0016] Figure 1 This is a structural diagram of the glass mold punch device of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the air blowing mechanism of the present utility model.

[0018] Reference numerals:

[0019] Base 100, through hole 110, punch 200, blowing mechanism 300, cover 310, circular hole 311, air outlet 320, air return port 330, die 400, piston rod 500 DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. The preferred embodiments of the present invention are shown in the drawings. The purpose of the drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise expressly defined, terms such as "install," "connect," and "set" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution. Furthermore, the various technical features of this invention may be combined interchangeably as long as they do not conflict with each other.

[0024] Glass bottles and jars are common containers, widely used in daily life and industrial production. Their molding methods mainly include blow-blowing and press-blowing. Press-blowing is a technology used in the field of glassware production. It uses a combination of pressing and blowing to simultaneously shape the bottle body and bottle mouth, thereby producing a uniform glass bottle. Compared with the traditional blow-blowing method, this method can produce glass bottles that are lighter and stronger. It is suitable for the production of hollow glass products such as wide-mouth bottles, and is also used to produce small-mouth bottles.

[0025] The punch is a key component required in the press-blow process. Typically mounted on the end of a cylinder, it moves up and down, engaging the die to form the mouth of the glass bottle. During the production of glass bottles using a conveyor belt, the punch comes into direct contact with the molten glass, which can reach temperatures exceeding 600°C. Punches are typically made of iron, which reacts with oxygen in the air at high temperatures to produce iron oxide, forming a layer of scale. This scale, due to its different expansion coefficient than cast iron, easily breaks off at high temperatures. This not only damages the punch's surface quality, but also allows the detached scale to enter the molten glass, negatively impacting the quality of the produced glass bottles.

[0026] In view of this, the current common improvement method adopted in the industry is to add elements such as chromium, manganese, and nickel to the cast iron base material, or to use high-hardness special alloy materials for surface spray welding to delay the oxidation process of the parts (such as the technical solution disclosed in Chinese Utility Model Application Publication No. CN116408604A). However, the effect of improving the oxidation of the punch through material improvement is limited, and the special alloy materials lead to high production costs of the punch.

[0027] To this end, the utility model provides a glass mold punch device, which forms a protective air cover on the surface of the punch to reduce the oxidation process of the punch, extend the service life of the punch and improve the production quality of glass bottles. Specifically:

[0028] See also Figure 1~Figure 2The glass mold punch device in this embodiment includes a base 100, a through hole 110 is defined in the base 100, a punch 200 is disposed in the through hole 110, and the punch 200 is slidably connected to the base 100. The device also includes a blowing mechanism 300, which is disposed on the through hole 110 and blows out an inert gas that can cover the outside of the punch 200.

[0029] See also Figure 1 The base 100 and punch 200 adopt a common structure in the prior art. Generally, a die 400 is provided above the base 100. During production, a drop of hot molten glass is delivered to the die cavity of the die 400. The punch 200 then pushes it upward from the through hole 110 of the base 100. The outer surface of the punch 200 and the inner wall of the die cavity of the die 400 form the blank of the glass bottle. After the blank is formed, it is transferred to the forming mold and formed by air blowing. Therefore, the punch 200 needs to extrude the hot molten glass, so the punch 200 needs to directly contact the hot molten glass. This solution is achieved by arranging a blowing mechanism 300 above the punch 200. The blowing mechanism 300 blows inert gas onto the upper surface of the through hole 110. Then, when the punch 200 passes through the through hole 110, the inert gas can cover the outer surface of the punch 200 and form a gas cover outside the punch 200. The punch 200 enters the die 400 together with the gas cover. Since there is a gas cover between the surface of the punch 200 and the glass liquid, the gas cover can avoid direct contact between air and the punch surface, effectively preventing the surface oxidation of the punch and extending the service life of the punch. Moreover, since the surface of the punch will not directly contact the glass liquid, even if there is oxide scale on the surface of the punch, the oxide scale is not easy to enter the glass liquid, thereby improving the production quality of glass products.

[0030] For further information, see Figure 2 The blowing mechanism 300 includes a cover 310. The cover 310 is generally disc-shaped and can be fixedly mounted on the base 100. The cover 310 includes a circular hole 311. The diameter of the circular hole 311 is larger than the diameter of the through hole 110, and the circular hole 311 is substantially concentric with the through hole 110. A plurality of air outlets 320 are provided on the peripheral wall of the circular hole 311. The plurality of air outlets 320 are evenly distributed annularly on the peripheral wall of the circular hole 311. Moreover, the plurality of air outlets 320 are substantially located on the same horizontal plane.

[0031] It is understandable that the cover body 310 is also provided with an air inlet and a distribution pipe. The air inlet is connected to an external gas source. The inert gas enters the cover body 310 through the air inlet, and then passes through the distribution pipe and is discharged from the multiple air outlets 320. In order to ensure that the multiple air outlets 320 can discharge gas evenly, the flow channel of the distribution pipe is also optimized. Moreover, the number and distribution of the air outlets 320 can be determined according to actual usage requirements, combined with the air output of the air outlet and the aperture of the circular hole 311. The punch 200 is generally annular in structure, and when the punch 200 contacts the glass liquid, it is also in all-round contact. Therefore, in order to improve the comprehensiveness of the gas hood, the blowing mechanism 300 includes multiple air outlets 320, and the multiple air outlets 320 are distributed annularly on the blowing mechanism 300.

[0032] Furthermore, since the punch 200 needs to frequently pass through the through-hole 110 during operation, the shape of the gas hood can easily break down during the punch's reciprocating motion. Therefore, during operation, inert gas must be continuously ejected from the gas outlet 320, but the gas volume used by the gas hood is limited. Therefore, to avoid wasting excess inert gas, a return port 330 is provided on the peripheral wall of the circular hole 311. The return port 330 is located below the gas outlet 320, and there are multiple return ports 330. It is understood that the cover 310 is provided with a recovery line and a recovery port. The multiple return ports 330 are connected to the recovery port via the recovery line. The recovery port is generally connected to a negative pressure device, thereby creating a negative pressure on the return port 330. When the inert gas approaches the return port 330, it is absorbed by the negative pressure device and then recycled by the recovery device. This reduces inert gas loss and improves overall economic efficiency.

[0033] See also Figure 2 , further as a preferred embodiment, the opening of the air outlet 320 is inclined upward, and the opening of the air return port 330 is inclined downward. Since the specific gravity of the inert gas is generally heavier than that of air, the air outlet is inclined upward, so that the gas is sprayed upward and then covers the outer surface of the punch 200. Then, the excess gas sinks downward under the action of gravity and flows back from the air return port. At the same time, the air outlet 320 sprays upward, while the air return port 330 is inclined downward, which can prevent the inert gas from being sucked away by the air return port immediately after coming out of the air outlet. It can be understood that in the cover body 310, the air inlet pipeline and the air return pipeline are completely independent and are not connected in series with each other.

[0034] In addition, to facilitate the recovery of inert gas, a support ring is provided on the circular hole 311. The inner diameter of the support ring is smaller than that of the circular hole 311 and is substantially the same as the outer diameter of the punch base. Furthermore, the support ring is located below the gas return port 330. After the inert gas is ejected from the gas outlet 320, a portion adheres to the surface of the punch 200, while the remainder settles on the support ring. Because the gap between the support ring and the punch base is very small, the inert gas rarely escapes through the gap between them. The area enclosed by the support ring and the peripheral wall of the circular hole 311 is precisely designed to receive excess inert gas. Furthermore, the gas return port 330 is tilted downward, facing the upper space of the support ring, so that the inert gas accumulated above the support ring can be sucked away and recovered by the gas return port 330.

[0035] See also Figure 1 As a further preferred embodiment, a piston rod 500 is provided in the through hole 110, and the piston rod 500 is fixedly connected to the punch 200 by a clamping ring. The piston rod 500 is the piston rod in the cylinder that drives the punch 200 to move up and down in the above-mentioned prior art. The cover body 310 can be a cylinder head that cooperates with the cylinder. By organically integrating the cylinder head of the cylinder with the cover body 310, the modification cost of the existing array machine can be reduced and the convenience can be improved. At the same time, the piston rod 500 and the punch 200 are installed by a clamping ring. When a different punch 200 needs to be replaced, it can be quickly replaced by just using the clamping ring, which improves convenience.

[0036] It is understood that while this embodiment is applicable to the press-blow method of manufacturing glass bottles, this solution is also applicable to the blow-blow method. In the blow-blow method, a core is used instead of a punch. Therefore, simply by replacing the punch with a core, the corresponding blowing mechanism 300 can also spray inert gas to protect the surface of the core.

[0037] Furthermore, as a further preferred embodiment, the glass mold punch device further includes an air supply system, which is connected to the air blowing mechanism. The air supply system includes a control unit, which includes a flow meter, a pressure gauge, and a control valve. The control unit is used to adjust the flow rate and pressure of the air blowing mechanism. To form a stable and reliable air hood, the air injection volume and pressure of the air blowing mechanism must be regulated.

[0038] Typically, inert gas is stored in high-pressure cylinders in a dedicated safety zone. It is then delivered to the alignment machine via dedicated pipelines and then connected to the blowing mechanism 300. Distributed pipelines provided on the cover 310 ensure that the inert gas is evenly distributed over the entire surface of the punch 200.

[0039] The gas supply system also includes a control unit, which uses flow meters, pressure gauges, control valves, etc. to adjust the flow and pressure of the inert gas. These control units can also be electrically connected to the display screen on the array machine to intuitively feedback the inert gas supply situation through the display screen, and can directly adjust various gas supply parameters on the display screen to achieve a more ideal gas supply situation.

[0040] As a further preferred embodiment, the gas supply system also includes a gas detector, a safety valve, and a shut-off device. The gas detector detects the concentration of inert gas in the environment, and the safety valve and shut-off device are used to shut off the gas supply to the gas supply system. By installing a gas detector to detect the concentration of inert gas in the machine environment, the safety valve and shut-off device can shut off the gas source in the event of a gas leak or other emergency, thus interrupting the inert gas supply and ensuring a safe production environment.

[0041] As a further improvement to the above technical solution, the inert gas is argon. The specific heat capacity of argon is approximately 0.52 kJ / (kg.K), while the specific heat capacity of air is 1.0 kJ / (kg.K). Argon has a lower thermal conductivity than air. Using argon not only isolates the punch surface from oxygen in the air but also reduces the transfer of heat from the molten glass to the punch, maintaining a stable surface temperature and further increasing the punch's service life.

[0042] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A glass mold punch device, comprising a base, a through hole provided in the base, a punch provided in the through hole, the punch being slidably connected to the base, characterized in that: It also includes a blowing mechanism, which is arranged on the through hole and blows out inert gas, and the inert gas can cover the outside of the punch.

2. The glass mold punch device according to claim 1, characterized in that: The blowing mechanism comprises a plurality of air outlets, and the plurality of air outlets are distributed on the blowing mechanism in an annular shape.

3. The glass mold punch device according to claim 2, characterized in that: The blowing mechanism includes a cover body, a circular hole is provided in the cover body, the circular hole corresponds to the through hole, and the air outlets are distributed on the peripheral wall of the circular hole.

4. The glass mold punch device according to claim 3, characterized in that: An air return port is also provided on the peripheral wall of the circular hole, and the air return port is provided below the air outlet.

5. The glass mold punch device according to claim 4, characterized in that: The opening of the air outlet is inclined upward, and the opening of the air return port is inclined downward.

6. The glass mold punch device according to claim 5, characterized in that: A piston rod is provided in the through hole, and the piston rod is fixedly connected to the punch via a clamp ring.

7. The glass mold punch device according to claim 1, characterized in that: It also includes an air supply system, which is communicated with the air blowing mechanism.

8. The glass mold punch device according to claim 7, characterized in that: The air supply system includes a control unit, which includes a flow meter, a pressure meter and a control valve. The control unit is used to adjust the flow and pressure of the blowing mechanism.

9. The glass mold punch device according to claim 7, characterized in that: The gas supply system further comprises a gas detector, a safety valve and a cut-off device. The gas detector is used to detect the concentration of the inert gas in the environment, and the safety valve and the cut-off device are used to cut off the gas source of the gas supply system.

10. The glass mold punch device according to claim 1, characterized in that: The inert gas is argon.

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