A press-and-blow forming apparatus for glass containers

Abstract

The utility model relates to glass container forming technical field especially glass container's press blow forming device, include: mounting bracket, one end fixed mounting of mounting bracket has the cylinder, the output fixed connection of cylinder has the support, the bottom fixed connection of support has the pressure head, and the outer periphery of pressure head is equipped with the aperture, the inner chamber of pressure head is installed to go out the head, and the outer periphery of go out the head is equipped with the gas outlet, and the gas outlet is linked together with the aperture, one side fixed mounting of support top end has the air pump, and the output fixed connection of air pump has the connecting pipe, and the other end of connecting pipe is linked together with the gas outlet through the sealing bearing for conveying gas, the utility model provides a kind of glass container's press blow forming device, by integrating press and blow function in a station, and the gas outlet that can rotate in the inner chamber of pressure head and the structure of driving its rotation are ingeniously designed, effectively solve the problem of uneven wall thickness caused by blank turnover transfer in the glass container press blow forming process in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of glass container forming, and in particular to a glass container blow molding apparatus. Background Technology

[0002] With the rapid development of modern industry and daily life, the demand for high-performance, lightweight, and environmentally friendly packaging containers is increasing. Glass containers, due to their excellent chemical stability, non-toxicity, and recyclability, still hold an important position in the packaging field. However, in the glass container forming process, especially when using the press-blown method, existing technologies typically require pressing the glass droplet into a preliminary shape in a mold before transferring it to a final mold for blow molding. This transfer process often necessitates flipping the preliminary shape.

[0003] However, during the transfer process, the prototype undergoes a certain degree of cooling, leading to uneven temperature distribution on its surface and inside, and material hardening. This affects the subsequent blowing effect in the final mold. More importantly, the mechanical forces and gravity during the flipping process may cause slight bending or deformation of the prototype's shape, especially the expansion holes prepared for subsequent blowing, which may shift or bend. If blowing is performed under these conditions, the airflow through the bent or shifted expansion holes will cause uneven stress and flow in different areas of the glass material, ultimately resulting in uneven thickness of the formed glass bottle's outer wall. Uneven glass bottle wall thickness not only affects the product's aesthetics but, more importantly, reduces the bottle's mechanical strength and pressure resistance, failing to meet the demands of certain fields for high-performance glass containers, thus posing certain limitations. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a glass container press blow molding device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a glass container press blow molding apparatus, comprising:

[0006] Mounting bracket, one end of which is fixedly mounted with a cylinder, the output end of which is fixedly connected to a bracket, the bottom end of which is fixedly connected to a pressure head, and the outer periphery of the pressure head is provided with an opening;

[0007] An air outlet is installed inside the pressure head, and an air outlet hole is opened on the outer periphery of the air outlet, which is connected to the opening.

[0008] An air pump is fixedly installed on one side of the top of the bracket. The output end of the air pump is fixedly connected to a connecting pipe. The other end of the connecting pipe is connected to the air outlet through a sealed bearing for conveying gas.

[0009] A rotary motor is fixedly installed on the other side of the top of the bracket. A turntable is fixedly connected to the output end of the rotary motor. A connecting rod is fixedly connected to the bottom edge of the turntable. This rod is used to drive the air outlet head to rotate along the axis of the pressure head so that the positions of the air outlet and the opening are staggered or connected.

[0010] Preferably, the connecting pipe includes a rigid pipe and a flexible pipe. One end of the rigid pipe is connected to the air outlet through a sealed bearing, and the rigid pipe and the output end of the air pump are connected through the flexible pipe.

[0011] Preferably, the rotary motor drives the air outlet head to rotate at a certain angle, which is 180 degrees.

[0012] Preferably, an electromagnetic valve is installed on the connecting pipe near the bracket.

[0013] Preferably, a sealing ring is installed between the vent and the opening.

[0014] Preferably, the sealing ring is located on the outer periphery of the air outlet.

[0015] Preferably, the support is L-shaped.

[0016] Preferably, the mounting bracket includes a support column and a base, with the support column fixedly installed at the middle of the top of the base and the cylinder fixedly installed at one end of the support column.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention provides a glass container press-blown forming device that integrates pressing and blowing functions into one station. It cleverly designs an air outlet head that can rotate within the press head cavity and a structure to drive its rotation, effectively solving the problem of uneven wall thickness caused by blank flipping and transfer during the press-blown forming process in existing technologies. Specifically, after the initial pressing of the droplet, the device eliminates the need to transfer the initial shape to another mold. Instead, it directly outputs gas through an air pump, utilizing the air outlet on the air outlet head and the opening on the press head for blowing. More importantly, by rotating the air outlet head via a rotary motor, the air outlet and opening can be misaligned, preventing droplets from entering the air outlet head cavity during the pressing stage. When blowing is required, the air outlet and opening can be aligned and connected by reverse rotation, facilitating smooth airflow. This integrated press-blown process avoids the cooling and hardening of the blank during transfer and the bending deformation of its shape and internal expansion holes, ensuring the blank is in a good state before blowing and resulting in a more uniform outer wall thickness for the blown glass container. Therefore, this invention not only improves the forming quality of glass containers, especially the uniformity of wall thickness, but also simplifies the process and improves production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a pressure blow molding apparatus for a glass container.

[0020] Figure 2 This is a schematic diagram of the pressure head in a pressure blow molding apparatus for a glass container.

[0021] Figure 3 This is a schematic diagram of the connecting pipe in a glass container blow molding apparatus.

[0022] Figure 4 This is a schematic diagram of the air outlet in a pressure blow molding apparatus for a glass container.

[0023] Explanation of structural icon numbers

[0024] 1. Mounting bracket; 2. Cylinder; 3. Support; 4. Pressure head; 5. Air outlet; 6. Air pump; 7. Connecting pipe; 8. Air outlet; 9. Opening; 10. Rotary motor; 11. Connecting rod; 12. Solenoid valve; 13. Turntable. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0026] With the increasing demand for high-performance, lightweight glass containers in modern industry, glass container forming technology is also continuously developing. Traditional glass container press-blow molding methods typically involve pressing glass stock into a preliminary shape, then transferring and flipping the preliminary shape into a final mold for blowing. However, this transfer and flipping process has inherent limitations. During the transfer process, the preliminary shape cools and hardens, affecting the subsequent blowing effect; simultaneously, flipping can cause bending and deformation of the preliminary shape's outer shape and internal expansion holes, ultimately resulting in uneven wall thickness in the blown glass bottle, reducing product quality and performance. For example, the shortcomings of existing technology are particularly prominent when producing cosmetic bottles, pharmaceutical bottles, or scientific instrument components where high wall thickness uniformity is required. To overcome the problem of uneven wall thickness caused by the flipping and transfer of the preform in existing technologies, this invention proposes a new glass container press-blow molding device. This device integrates pressing and blowing into one station and introduces an outlet head that can rotate relative to the inner cavity of the press head, thus completing press-blow molding without flipping and transferring the preform, effectively improving the uniformity of product wall thickness.

[0027] like Figures 1 to 4 The pressure blow molding apparatus for a glass container shown includes:

[0028] Mounting bracket 1, one end of which is fixedly mounted with cylinder 2, the output end of cylinder 2 is fixedly connected to bracket 3, the bottom end of bracket 3 is fixedly connected to pressure head 4, and the outer periphery of pressure head 4 is provided with opening 9;

[0029] An air outlet 5 is installed in the inner cavity of the pressure head 4. An air outlet hole 8 is opened on the outer periphery of the air outlet head 5, and the air outlet hole 8 is connected to the opening 9.

[0030] An air pump 6 is fixedly installed on one side of the top of the bracket 3. The output end of the air pump 6 is fixedly connected to a connecting pipe 7. The other end of the connecting pipe 7 is connected to the air outlet 5 through a sealed bearing for conveying gas.

[0031] A rotary motor 10 is fixedly installed on the other side of the top of the bracket 3. A turntable 13 is fixedly connected to the output end of the rotary motor 10. A connecting rod 11 is fixedly connected to the bottom edge of the turntable 13, which is used to drive the air outlet head 5 to rotate along the axis of the pressure head 4 so that the positions of the air outlet 8 and the opening 9 are staggered or connected.

[0032] In practical implementation, this process first involves dripping molten glass into a mold, then initially pressing it with a pressure head 4 to form a preliminary shape. Next, gas is blown into the preliminary shape within the same mold, causing it to expand and conform to the inner wall of the mold, ultimately forming the desired glass container. The core of this invention lies in achieving pressing and blowing at the same station, with precise control over the timing and position of the blowing. The pressure head 4 in the device is used for initial pressing and forming of the glass droplet, and the air outlet 5 is installed inside the pressure head 4 to deliver blowing gas into the preliminary shape. The air pump 6 is the gas source, delivering gas to the air outlet 5 via a connecting pipe 7. To control the timing and position of the blowing, the device also includes a rotary motor 10, a turntable 13, and a connecting rod 11, used to drive the air outlet 5 to rotate relative to the pressure head 4. The entire device is driven by a cylinder 2 to move the support 3 up and down, thereby achieving the pressing action of the pressure head 4, and is mounted on the mounting frame 1.

[0033] As one embodiment of this utility model, the connecting pipe 7 includes a rigid pipe and a flexible pipe. One end of the rigid pipe is connected to the air outlet 5 through a sealed bearing, and the rigid pipe and the output end of the air pump 6 are connected through a flexible pipe.

[0034] In practical implementation, the connecting pipe 7 is used to transport the gas output from the air pump 6 to the air outlet 5. To accommodate the rotational movement of the air outlet 5, the connecting pipe 7 is designed to include two parts: a rigid pipe and a flexible pipe. The rigid pipe is connected to the air outlet 5 via a sealed bearing and can rotate with the air outlet 5. The flexible pipe connects the rigid pipe to the fixed output end of the air pump 6. The rigid pipe is typically made of materials such as metal or hard plastic, possessing a certain degree of rigidity and capable of precisely guiding the gas to the air outlet 5. The flexible pipe is made of materials such as rubber, silicone, or flexible plastic, possessing good bending and tensile properties. A flexible conduit is positioned between the rigid conduit and the air pump 6. It absorbs the displacement and angular changes in the rigid conduit as the outlet head 5 rotates, preventing stress or torsion on the output end of the air pump 6. The combination of rigid and flexible conduits ensures stable and smooth gas delivery even during the rotation of the outlet head 5, while protecting the gas connection from damage. Therefore, this combined rigid and flexible conduit design effectively solves the reliability problem of the gas connection. The rigid conduit ensures the accuracy of gas delivery, while the flexible conduit provides necessary flexibility compensation. When the outlet head 5 rotates, the rigid conduit can rotate along its axis, and the flexible conduit adapts to this rotation through its own deformation, thus avoiding problems such as pipe torsion, leakage, or even breakage that can occur with traditional rigid connections. This design ensures a stable airflow supply during the blowing process, improving the reliability and service life of the device.

[0035] As one embodiment of this utility model, the rotary motor 10 drives the air outlet 5 to rotate at a certain angle, which is 180 degrees.

[0036] In practice, when the air outlet 5 rotates 180 degrees from one position to another, the position of the air outlet 8 relative to the opening 9 changes. For example, if the initial position allows the air outlet 8 to be fully aligned and connected with the opening 9, then after rotating 180 degrees, the air outlet 8 will move to a position completely offset from the opening 9, thereby cutting off the airflow channel and preventing the material droplets from entering. Conversely, if the initial position is misaligned, rotating 180 degrees will make it connected. Choosing 180 degrees as the rotation angle is a simple and effective way to ensure that the air outlet 8 and the opening 9 can reliably switch from fully connected to fully misaligned, or from fully misaligned to fully connected, thereby precisely controlling the blowing timing. This precise angle control ensures that during the pressing stage, the air outlet 8 and the opening 9 can be fully misaligned, effectively preventing the glass material from entering the inner cavity of the air outlet 5; while during the blowing stage, the air outlet 8 and the opening 9 can be fully aligned and connected, ensuring smooth airflow into the initial shape. Compared to technical solutions that only describe relative rotation without specifying a specific angle, limiting the rotation angle to 180 degrees provides a specific and operable implementation method, improves the accuracy and reliability of device control, further optimizes the blow molding process that does not require flipping and transfer, and helps to obtain glass containers with more uniform wall thickness.

[0037] In one embodiment of this utility model, an electromagnetic valve 12 is installed on the connecting pipe 7 near the bracket 3.

[0038] In practical implementation, the solenoid valve 12 is installed in the air path between the air pump 6 and the air outlet 5 to control the flow of air. When blowing is required, the control system sends an opening signal to the solenoid valve 12, and gas can be delivered from the air pump 6 to the air outlet 5 through the connecting pipe 7. After blowing is completed or when blowing is no longer needed, a closing signal is sent, and the solenoid valve 12 immediately cuts off the airflow. The solenoid valve 12 can be any type of solenoid valve suitable for high-pressure gas control, such as a direct-acting solenoid valve or a pilot-operated solenoid valve. Installing it near the bracket 3 on the connecting pipe 7 facilitates electrical connection and integration with the control system. The solenoid valve 12 allows for faster and more reliable opening and closing of the airflow, avoiding blowing defects that may result from inaccurate airflow control. This ensures a stable and sufficient airflow for blowing at the appropriate time and stops the gas supply immediately when not needed, effectively preventing airflow leakage or unnecessary waste, thereby improving the control accuracy and efficiency of blowing molding and contributing to higher quality glass container products.

[0039] As one embodiment of this utility model, a sealing ring is installed between the air outlet 8 and the opening 9.

[0040] In practice, the sealing ring is a ring-shaped sealing element, typically made of a high-temperature resistant, wear-resistant, and elastic material, such as special rubber, fluororubber, silicone rubber, or a metal sealing ring. This sealing ring is installed on the mating surfaces of the outlet head 5 and the pressure head 4, located at the relative positions of the outlet hole 8 and the opening 9. When the rotary motor 10 drives the outlet head 5 to rotate, causing the outlet hole 8 and the opening 9 to misalign, the sealing ring is compressed or adhered between the surfaces of the two components, forming an effective barrier to prevent glass material from seeping into the internal space of the outlet head 5 through the opening 9. The sealing ring reliably prevents glass material from entering the inner cavity of the outlet head 5 during the pressing process, avoiding potential problems such as airway blockage and damage to the outlet head 5. This ensures the long-term stable operation of the device and the smooth operation of the blowing process, further improving the forming quality of the glass container and the reliability of the device.

[0041] In one embodiment of this utility model, the sealing ring is disposed on the outer periphery of the air outlet 5.

[0042] In practice, the sealing ring positioned on the outer periphery of the outlet head 5 engages with the inner wall of the pressure head 4. When the rotary motor 10 drives the outlet head 5 to rotate, the sealing ring rotates along with it, always remaining near the area where the outlet hole 8 and the opening 9 may experience relative displacement. This arrangement allows the sealing ring to better adapt to the rotational movement of the outlet head 5 and effectively forms a seal between the outlet head 5 and the pressure head 4 when the outlet hole 8 and the opening 9 are misaligned, preventing glass material from entering the inner cavity of the outlet head 5. Compared to placing the sealing ring on the pressure head 4 or in other locations, placing the sealing ring on the outer periphery of the outlet head 5 results in a more compact structure, facilitating installation and maintenance, and enabling more reliable dynamic sealing during rotation. This further enhances the leak-proof capability of the device during the pressing stage, improving the reliability of the device and the stability of the blow molding process.

[0043] As one embodiment of this utility model, the bracket 3 is L-shaped.

[0044] In practice, the L-shaped structure allows the various components to be compactly arranged on the support 3 and can effectively transmit the linear motion of the cylinder 2 to the press head 4. At the same time, it provides a stable mounting platform for the air pump 6 and the rotary motor 10. This design not only simplifies the overall structure of the device and reduces its volume, but also helps to improve the rigidity and stability of the connection between components, thereby ensuring the accuracy and reliability of the pressing and blowing process.

[0045] As one embodiment of this utility model, the mounting bracket 1 includes a support column and a base. The support column is fixedly installed in the middle of the top of the base, and the cylinder 2 is fixedly installed at one end of the support column.

[0046] In practice, the base is the bottom component of the mounting frame 1, typically plate-shaped or block-shaped, used for placement on the ground or workbench, providing a stable foundation. The support column is the vertical component of the mounting frame 1, column-shaped or beam-shaped, extending upwards from the base. The support column is fixedly installed at the center of the top of the base, for example, by bolting, welding, or other fixing methods. The cylinder 2, as the power source of the device, is fixedly installed at one end of the support column, for example, the upper end of the support column. This structure forms a stable L-shaped or inverted L-shaped support frame, effectively bearing the weight of the device and the reaction forces generated during operation. The support column and base can be made of steel or other materials with sufficient strength and rigidity, providing reliable support and positioning for the entire blow molding device, ensuring stability during high-speed, repetitive blow molding processes, reducing vibration and displacement, thereby contributing to improved molding accuracy and product quality.

[0047] Working principle of this utility model:

[0048] In use, the mounting bracket 1 is installed in the corresponding position on the bottle-making machine. After the material droplet falls into the bottle-making mold, the cylinder 2 drives the support 3 to move downward, causing the pressure head 4 on the support 3 to press down and initially shape the material droplet. While the pressure head 4 is pressing the material droplet, the rotary motor 10 has already rotated the turntable 13. Through the connecting rod 11 at the bottom of the turntable 13, the air outlet 5 is driven to rotate along the axis of the pressure head 4, so that the positions of the air outlet 8 and the opening 9 are staggered, thus preventing the material droplet from passing through the opening 9 and entering the inner cavity of the pressure head 4. After the material droplet has been initially shaped, when blowing is required, the rotary motor 10 can reset the air outlet 5, reconnecting the air outlet 8 and the opening 9. At this time, the air pump 6 can output gas, which enters the initial shape through the connecting pipe 7, the sealed bearing, the air outlet 8 of the air outlet 5, and the opening 9 of the pressure head 4, so that the material droplet is blown into shape. While air is released from vent 8, a small amount of glass material inside opening 9 can also be blown out, further ensuring unobstructed airflow. The entire process eliminates the need to remove the initial shape from the pressing mold and flip it over, thus avoiding the problems of material cooling, deformation, and uneven wall thickness in the final product caused by transfer and flipping in traditional processes. Mounting bracket 1 provides stable support, cylinder 2 provides precise up-and-down movement power, and support bracket 3 connects and supports the main working components such as pressing head 4, air pump 6, and rotary motor 10. Pressing head 4 and air outlet 5 are key components that directly contact the glass material and realize the pressing and blowing functions. Air pump 6 and connecting pipe 7 constitute the airflow system. The rotary motor 10, turntable 13, and connecting rod 11 cooperate with the relative rotation of air outlet 5. These components work together to achieve a press-blow molding process that eliminates the need for flipping and transfer, effectively solving the technical problems in existing technologies and improving the forming quality of glass containers.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A pressure blow molding apparatus for glass containers, characterized in that, include: Mounting bracket (1), one end of which is fixedly mounted with a cylinder (2), the output end of which is fixedly connected with a bracket (3), the bottom end of which is fixedly connected with a pressure head (4), and the outer periphery of the pressure head (4) is provided with an opening (9); The inner cavity of the pressure head (4) is equipped with an air outlet (5), and an air outlet hole (8) is opened on the outer periphery of the air outlet (5). The air outlet hole (8) is connected to the opening (9). An air pump (6) is fixedly installed on one side of the top of the bracket (3). The output end of the air pump (6) is fixedly connected to a connecting pipe (7). The other end of the connecting pipe (7) is connected to the air outlet (5) through a sealed bearing for conveying gas. A rotary motor (10) is fixedly installed on the other side of the top of the bracket (3). A turntable (13) is fixedly connected to the output end of the rotary motor (10). A connecting rod (11) is fixedly connected to the bottom edge of the turntable (13) to drive the air outlet (5) to rotate along the axis of the pressure head (4) so ​​that the positions of the air outlet (8) and the opening (9) are staggered or connected.

2. The pressure blow molding apparatus for a glass container according to claim 1, characterized in that, The connecting pipe (7) includes a rigid pipe and a flexible pipe. One end of the rigid pipe is connected to the air outlet (5) through the sealed bearing. The rigid pipe and the output end of the air pump (6) are connected through the flexible pipe.

3. The pressure blow molding apparatus for a glass container according to claim 1, characterized in that, The rotary motor (10) drives the air outlet (5) to rotate at a certain angle, which is 180 degrees.

4. The pressure blow molding apparatus for a glass container according to claim 1, characterized in that, An electromagnetic valve (12) is installed on the connecting pipe (7) near the bracket (3).

5. The pressure blow molding apparatus for a glass container according to claim 1, characterized in that, A sealing ring is installed between the air outlet (8) and the opening (9).

6. The pressure blow molding apparatus for a glass container according to claim 5, characterized in that, The sealing ring is disposed on the outer periphery of the air outlet (5).

7. The glass container press blow molding apparatus according to claim 1, characterized in that, The bracket (3) is L-shaped.

8. The pressure blow molding apparatus for a glass container according to claim 1, characterized in that, The mounting bracket (1) includes a support column and a base. The support column is fixedly installed in the middle of the top of the base, and the cylinder (2) is fixedly installed at one end of the support column.

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