Glass container and manufacturing process thereof
By designing automated glass container manufacturing equipment and employing negative pressure and mechanical pressing technology, the automated production of double-walled stemmed glasses has been achieved, solving the problems of low efficiency and poor safety in existing technologies and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202511695588.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-02-13
AI Technical Summary
The current manufacturing of double-walled stemmed glasses relies on manual hand-held spray guns and manual production, which results in low production efficiency, difficulty in scaling up, and high labor intensity and low safety for workers in high-temperature environments.
A glass container manufacturing device was designed, which utilizes components such as a heating mechanism, electric push rod, sliding stopper and pressure head to achieve automated forming of glass containers through negative pressure and mechanical pressing, including uniform heating, negative pressure suction and fine forming. Combined with an automatic unloading mechanism, it realizes the production of double-walled stemmed glasses without human intervention.
It improves processing efficiency, reduces the risk of manual operation, reduces the defect rate, ensures product consistency and yield, and enhances the level of production automation.
Smart Images
Figure CN121517097A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of glass container manufacturing, and more particularly to a glass container and its manufacturing process. Background Technology
[0002] Glass containers hold an important place in daily life and high-end catering due to their excellent chemical stability, transparency, aesthetic appeal, and environmental recyclability. Among them, stemmed glasses, as a representative product in the wine set market, not only need to meet basic functional requirements but also possess artistic value and a superior user experience. In recent years, with consumption upgrades and market segmentation, double-walled hollow stemmed glasses have gained market favor due to their unique heat insulation properties and elegant appearance.
[0003] In the existing technology, double-walled stemmed glasses are usually made by hand using a hand-held spray gun and semi-finished glass. Due to their complex structure, these special glasses rely heavily on the individual skills of craftsmen, resulting in low production efficiency and limited output, making it difficult to meet the needs of large-scale markets. More importantly, workers face a serious risk of burns while working in high-temperature environments for extended periods, making the work labor-intensive and unsafe. Summary of the Invention
[0004] In view of this, the technical problem to be solved by the present invention is to provide a glass container and its manufacturing process. The present application can automatically process glass semi-finished products into double-walled stemmed glasses without human intervention.
[0005] A glass container manufacturing device includes a support frame, a heating mechanism mounted on the support frame, an electric push rod fixedly connected to the upper end of the support frame, a pressure head fixedly connected to the lower end of the electric push rod, an air cylinder fixedly connected to the lower end of the support frame, a sliding plug slidably connected inside the air cylinder, an insertion tube rotatably connected to the upper end of the air cylinder, multiple sealing sleeves fixedly connected to the outside of the insertion tube, a cup holder connected to the upper end of the air cylinder, the cup holder being cylindrical, the insertion tube being inserted into the bottom of the cup holder, an outer wall body connected to the upper end of the cup holder, and the upper end of the outer wall body being a flat seal.
[0006] A slide rod is slidably connected to the pressure head, and a connecting rod is fixedly connected to the lower end of the slide rod. The connecting rod is fixedly connected to the lower end of the extension rod of the slide plug. A baffle is fixedly connected to the upper end of the slide rod, and a spring is fixedly connected between the baffle and the pressure head.
[0007] A first motor is fixedly connected to the support frame, and a friction roller is fixedly connected to the output shaft of the first motor. The friction roller is in contact with the outer wall.
[0008] The heating mechanism includes a fixed block, which is fixedly connected to a support frame. A bent pipe is fixedly connected to the fixed block, and multiple nozzles are installed on the bent pipe. An air inlet pipe is fixedly connected to the bent pipe.
[0009] The manufacturing equipment also includes a fixed frame, on which a second motor is fixedly connected. A swing arm is fixedly connected to the output shaft of the second motor, and a discharge fork is fixedly connected to the end of the swing arm.
[0010] The unloading fork has an inverted conical cross-section.
[0011] A limit groove is provided on the fixed frame, and a conveyor plate is slidably connected in the limit groove.
[0012] The conveyor plate has multiple positioning holes, and a drive device for driving the conveyor plate is connected to the fixing frame.
[0013] The glass container is a double-walled stemmed glass, including a base, an outer wall integrally formed at the top of the base, and an inner wall integrally formed inside the outer wall. Attached Figure Description
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0015] Figure 1 and Figure 2 A schematic diagram of the overall structure of a glass container manufacturing equipment;
[0016] Figure 3 This is a schematic diagram of the fixed frame structure;
[0017] Figure 4 This is a structural schematic diagram of the support frame;
[0018] Figure 5 This is a schematic diagram of the structure of a bend in a pipe.
[0019] Figure 6 This is a schematic diagram of the friction roller structure;
[0020] Figure 7 This is a schematic diagram of the pressure head structure;
[0021] Figure 8 This is a structural cross-sectional view of a double-layered stemmed glass. Detailed Implementation
[0022] The present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.
[0023] A glass container manufacturing device includes a support frame 101, a heating mechanism mounted on the support frame 101, an electric push rod 102 fixedly connected to the upper end of the support frame 101, a pressure head 103 fixedly connected to the lower end of the electric push rod 102, an air cylinder 401 fixedly connected to the lower end of the support frame 101, a sliding plug 403 slidably connected inside the air cylinder 401, an insertion tube 404 rotatably connected to the upper end of the air cylinder 401, a plurality of sealing sleeves 405 fixedly connected to the outside of the insertion tube 404, a cup holder 502 connected to the upper end of the air cylinder 401, the cup holder 502 is cylindrical, the insertion tube 404 is inserted into the bottom of the cup holder 502, an outer wall 501 connected to the upper end of the cup holder 502, and the upper end of the outer wall 501 is a flat seal.
[0024] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 ,
[0025] When using the manufacturing equipment, the worker first places the cup holder 502 of the stemmed glass to be processed onto the insert 404. Multiple sealing sleeves 405 serve to seal the space between the cup holder 502 and the insert 404, creating a sealed space inside the stemmed glass.
[0026] By controlling the heating mechanism to heat the upper plane of the outer wall 501, the glass in that area melts and becomes soft. At this time, by controlling the sliding stopper 403 to slide downward, a negative pressure is generated inside the goblet. Since the upper plane of the outer wall 501 is soft, the top surface of the outer wall 501 is concave inward under the action of negative pressure, thus achieving the initial forming of the double-layer goblet. Then, by controlling the extension of the moving end of the electric push rod 102, the moving end of the electric push rod 102 drives the pressure head 103 to move downward and extend, thus being able to insert into the outer wall 501. The pressure head 103 contacts the soft concave area, and under the action of pressure, the area is further formed, thereby forming the inner wall 503. At this time, the double-layer goblet is completed.
[0027] The manufacturing equipment of this application can automatically produce double-walled stemmed glasses without the need for workers to manually make them by hand with a spray gun and glass. This improves processing efficiency, avoids the risk of burns, and further reduces the defect rate caused by human error.
[0028] The downward movement of the sliding stopper 403 generates negative pressure within the sealed cup, causing the upper end of the softened outer wall 501 to indent inward. This negative pressure attraction method enables the glass material to deform uniformly, helping to form a more regular and symmetrical initial indentation, laying a good foundation for the subsequent fine forming by the pressure head 103, and potentially improving the stress concentration problem that is easily caused by simple pressure forming.
[0029] During the forming process, the upper plane glass of the outer wall 501 is softened by heating. Under the action of negative pressure and pressure head 103, this part of the glass is concave inward and finally forms the inner wall 503. This process may result in the inner wall 503 and the outer wall 501 being naturally connected at the interface by the same piece of original glass material through plastic deformation. Theoretically, this can form a more uniform, seamless integrated structure, or better ensure the strength and aesthetics of the connection.
[0030] A slide rod 201 is slidably connected to the pressure head 103. A connecting rod 204 is fixedly connected to the lower end of the slide rod 201. The connecting rod 204 is fixedly connected to the lower end of the extension rod of the slide plug 403. A baffle 202 is fixedly connected to the upper end of the slide rod 201. A spring 203 is fixedly connected between the baffle 202 and the pressure head 103.
[0031] See Figure 4 , Figure 6 and Figure 8 ,
[0032] When further shaping of the stemmed glass is required, the operator extends the moving end of the electric push rod 102 to move the pressure head 103 downward. As the pressure head 103 moves downward, the elasticity of the spring 203 presses the slide rod 201 downward. At this time, the spring 203 is not stretched due to the force, and the spring 203 mainly plays the role of rigid connection to transmit pressure. The slide rod 201 drives the connecting rod 204 to move downward, and the connecting rod 204 pulls the sliding plug 403 downward to achieve the initial shaping of the double-layer stemmed glass. When the moving end of the electric push rod 102 continues to extend downward, the sliding plug 403 is blocked by the retaining ring 402 inside the air cylinder 401, and the initial shaping is completed.
[0033] When the slider 403 descends to the point where it is stopped by the retaining ring 402 inside the air cylinder 401, the initial forming is completed. This is a crucial mechanical signal point. At this point, the linkage between the slider 403 and the slide rod 201 can no longer descend. If the electric actuator 102 continues to extend, its thrust will be entirely used to stretch the spring 203, and it will no longer be able to push the slider 403. The extension of the spring 203 cleverly absorbs this part of the stroke, allowing the pressure head 103 to continue moving downward independently of the slider 403, mechanically pressing the initially formed recessed area to complete the second fine forming, forming the inner wall body 503.
[0034] This structure eliminates the need for separate control of the slide plug 403, and the slide plug 403 and the pressure head 103 work sequentially, completing the preliminary forming and further forming respectively, making the overall process more coherent.
[0035] By using the simple mechanical limit of the retaining ring 402 and the elastic deformation of the spring 203, the irreversible operating sequence of "first negative pressure attraction, then mechanical pressing" is rigidly defined. This fundamentally avoids process errors that may result from operational mistakes, and improves product consistency and yield.
[0036] A first motor 301 is fixedly connected to the support frame 101, and a friction roller 302 is fixedly connected to the output shaft of the first motor 301. The friction roller 302 is in contact with the outer wall 501.
[0037] See Figure 6 ,
[0038] Since the insertion tube 404 is rotatably connected to the upper end of the air cylinder 401 via a bearing, when it is necessary to heat the upper surface of the outer wall 501, the operator controls the first motor 301 to drive the friction roller 302 to rotate. Under the action of friction, the friction roller 302 drives the entire stem cup to rotate, thereby enabling the heating mechanism to uniformly heat the upper surface of the outer wall 501, thus ensuring consistent softening, guaranteeing the molding effect, and avoiding uneven thickness of the inner wall 503.
[0039] Uniform heating is the primary prerequisite for obtaining uniform wall thickness. Only when the upper surface of the outer wall 501 reaches a basically uniform ideal softening state can the glass material be uniformly concave and extended inward under the action of negative pressure and pressure head 103, thereby forming an inner wall 503 with uniform thickness and symmetrical structure. This directly improves the yield, optical performance, and structural strength of the double-walled stemmed glass.
[0040] The friction roller 302 drives the stemmed glass to rotate through friction, which is a non-rigid transmission. Compared with traditional mechanical grippers or clamps, it greatly reduces the risk of scratches, indentations or clamping stress on the smooth outer wall of the stemmed glass, and is particularly beneficial for protecting high-value or surface-requirement glass products.
[0041] The heating mechanism includes a fixing block 104, which is fixedly connected to the support frame 101. A bend 106 is fixedly connected to the fixing block 104. Multiple nozzles 107 are installed on the bend 106. An air inlet pipe 105 is fixedly connected to the bend 106.
[0042] See Figure 5 ,
[0043] The air inlet pipe 105 is connected to the gas supply equipment. Combustible gas is transmitted from the air inlet pipe 105 to the bend pipe 106 through the gas pipe. The bend pipe 106 is used to install multiple nozzles 107. All the nozzles 107 are oriented towards the axis of the stemmed glass, thereby expanding the heating range of the stemmed glass. The flames emitted by the multiple nozzles 107 heat the plane at the upper end of the outer wall 501. With the rotation of the stemmed glass, the area can be heated evenly, further improving the heating efficiency.
[0044] The design of the bend 106 allows it to encircle the part of the stemmed glass that needs to be processed at a certain curvature. Multiple nozzles 107 mounted on it are all oriented towards the axis of the stemmed glass, forming a wall of flame around the workpiece. This layout fundamentally avoids the uneven heating problems that are easily caused by single-point or unidirectional heating, laying a solid foundation for subsequent high-quality glass molding.
[0045] The properties of glass materials dictate that the uniformity of its heating directly affects the molding quality. Localized overheating can lead to stress concentration or even cracking, while insufficient heating can cause molding difficulties. This mechanism, through the coordinated operation of multiple nozzles and the rotational motion of the stemmed glass, ensures that heat is evenly applied to the entire annular area to be processed, guaranteeing that the glass material reaches the ideal softening state synchronously. This is crucial for forming an inner wall body 503 with uniform wall thickness and regular shape.
[0046] Multiple nozzles 107 simultaneously spray flames, concentrating energy on a relatively small target area and significantly increasing the heating rate. Compared to using a single large spray gun or a moving spray gun for scanning heating, this method can drastically reduce the time required to heat the glass to the processing temperature, thereby directly improving the efficiency of the entire production process.
[0047] The ingenious design of the heating mechanism lies in its relatively simple mechanical structure—a multi-nozzle ring arrangement—which, in conjunction with the workpiece's rotational motion, efficiently achieves uniform, rapid, and controllable localized heating of the glass workpiece. This not only directly improves heating efficiency and forming quality, but its simple structure also brings high reliability and ease of maintenance, making it a crucial component of the entire automated manufacturing equipment.
[0048] The manufacturing equipment also includes a fixed frame 601, on which a second motor 602 is fixedly connected. A rocker arm 603 is fixedly connected to the output shaft of the second motor 602, and a discharge fork 604 is fixedly connected to the end of the rocker arm 603.
[0049] See Figure 1-3 ,
[0050] Once the double-walled stemmed glass is manufactured, the workers control the second motor 602 to drive the swing arm 603 to rotate. The swing arm 603 drives the unloading fork 604 to rotate around the output shaft of the second motor 602, thereby enabling the double-walled stemmed glass to be removed from the insert 404, achieving automatic unloading without the need for manual unloading and avoiding the risk of burns and falls.
[0051] Once the goblet is formed in the mold, the unloading mechanism immediately moves to remove it and transfer it to the next stage. This seamless connection avoids the workpiece stagnating on the mold, shortening the overall production cycle of a single product. As a terminal actuator in an automated production line, its existence enables the "heating-forming-unloading" process to proceed continuously, making it a crucial link in achieving unmanned or minimally manned operation and directly improving the overall automation level of the line.
[0052] The core advantage of this automated unloading structure lies in its simple structure and reliable operation, which enables safe, efficient, and non-destructive automated unloading. It not only directly ensures operator safety and product quality but also provides crucial support for large-scale, high-efficiency continuous production by optimizing production cycle time and increasing the overall automation level of the production line.
[0053] The unloading fork 604 has an inverted conical cross section.
[0054] See Figure 3 ,
[0055] The inverted conical unloading fork 604 can fit better against the outer wall 501 of the double-layer stem cup, ensuring the stability of unloading.
[0056] A limiting groove 607 is provided on the fixed frame 601, and a conveyor plate 605 is slidably connected in the limiting groove 607.
[0057] See Figure 3 ,
[0058] The limiting groove 607 is used to limit the movement of the conveyor plate 605, ensuring that the conveyor plate 605 can move linearly. When the unloading fork 604 is used to unload the double-layer stemmed cup, the unloading fork 604 rotates 180° and uses inertia to directly attach the double-layer stemmed cup to the conveyor plate 605. The conveyor plate 605 slides on the limiting groove 607, thereby being able to receive each manufactured double-layer stemmed cup in sequence, which is convenient for batch collection.
[0059] After the unloading fork 604 rotates 180 degrees, it does not slowly place the wine glass, but instead uses inertia to move the glass towards the conveyor plate 605. This method is highly efficient, but it requires extremely high accuracy in receiving the glass. The limiting groove 607 ensures that the conveyor plate 605 can only move in a straight line along the preset path, providing a stable and predictable receiving platform for each unloading operation. This ensures that the glass falls accurately and avoids the glass wobbling or falling due to unstable receiving.
[0060] The conveyor plate 605 is designed to sequentially receive each manufactured double-walled stemmed glass. This means the equipment can produce continuously. Driven by a driving device, such as a friction wheel driven by a drive motor, the conveyor plate moves gradually within the constraints of the limiting groove 607, ensuring that the multiple positioning holes 606 on the plate are sequentially aligned with the unloading station. This design enables batch, assembly-line automated collection, significantly improving overall production efficiency and avoiding intermittent operations where each glass needs to be manually removed after production.
[0061] The conveyor plate 605 has multiple positioning holes 606, and the fixing frame 601 is connected to a driving device for driving the conveyor plate 605.
[0062] See Figure 3 ,
[0063] The unloading fork 604 rotates 180° to secure the stemmed cup in the positioning hole 606. Since the stemmed cup is narrow at the top, wide in the middle, and narrow at the bottom, the positioning hole 606 can hold the stemmed cup in place. Multiple positioning holes 606 are used to position the double-layered stemmed cup to ensure its stability, thus facilitating the subsequent annealing process.
[0064] Annealing is a crucial step in glass manufacturing to eliminate internal stress, requiring the glass to be slowly heated and cooled within a specific temperature profile. Stable placement of the stemmed glasses on the conveyor plate 605 greatly facilitates the subsequent direct feeding of the entire rack into the annealing furnace. The spacing of the positioning holes 606 ensures adequate clearance between the glasses, promoting uniform hot air flow and making the annealing process more even and effective, thus providing a vital guarantee for the final product quality.
[0065] A glass container manufactured using manufacturing equipment, the glass container being a double-walled stemmed glass, including a base 502, an outer wall 501 integrally formed at the upper end of the base 502, and an inner wall 503 integrally formed inside the outer wall 501.
[0066] A process for manufacturing glass containers using manufacturing equipment, comprising the following steps:
[0067] Step 1: Fit the outer wall 501 of the stemmed glass onto the rotatable insert 404, start the first motor 301 to drive the friction roller 302 to rotate the glass body at a uniform speed, in preparation for uniform heating;
[0068] Step 2: Combustible gas is transported through the inlet pipe 105 to the annular bend pipe 106, and flames are sprayed out by multiple nozzles 107 to concentrate on heating the upper surface of the rotating cup body and make it soften evenly.
[0069] Step 3: The electric push rod 102 moves downward, and the spring 203 pushes the slide rod 201 and the slide plug 403 to move downward, generating negative pressure in the sealed cup, causing the heated part to indent inward, completing the initial shaping;
[0070] Step 4: After the slider 403 is limited by the retaining ring 402, the electric push rod 102 continues to descend and compress the spring 203, driving the pressure head 103 to apply pressure to the recessed area separately, accurately forming the inner wall body 503 and completing the double-layer structure.
[0071] Step 5: After forming, the second motor 602 drives the unloading fork 604 to rotate 180°, and the stem cup is placed into the positioning hole 606 of the conveyor plate 605 for positioning, and then transferred in batches for annealing.
Claims
1. A glass container manufacturing equipment, characterized in that: It includes a support frame, on which a heating mechanism is installed. An electric actuator is fixedly connected to the upper end of the support frame, and a pressure head is fixedly connected to the lower end of the electric actuator. An air cylinder is fixedly connected to the lower end of the support frame, and a sliding plug is slidably connected inside the air cylinder. An insert is rotatably connected to the upper end of the air cylinder, and multiple sealing sleeves are fixedly connected to the outside of the insert. A cup holder is connected to the upper end of the air cylinder. The cup holder is cylindrical, and the insert is inserted into the bottom of the cup holder. An outer wall is connected to the upper end of the cup holder, and the upper end of the outer wall is a flat seal.
2. The glass container manufacturing equipment according to claim 1, characterized in that: A sliding rod is slidably connected to the pressure head, and a connecting rod is fixedly connected to the lower end of the sliding rod. The connecting rod is fixedly connected to the lower end of the extension rod of the slide plug. A baffle is fixedly connected to the upper end of the sliding rod, and a spring is fixedly connected between the baffle and the pressure head.
3. The glass container manufacturing equipment according to claim 2, characterized in that: A first motor is fixedly connected to the support frame, and a friction roller is fixedly connected to the output shaft of the first motor. The friction roller is in contact with the outer wall.
4. The glass container manufacturing equipment according to claim 3, characterized in that: The heating mechanism includes a fixed block, which is fixedly connected to a support frame. A bent pipe is fixedly connected to the fixed block, and multiple nozzles are installed on the bent pipe. An air inlet pipe is fixedly connected to the bent pipe.
5. The glass container manufacturing equipment according to claim 4, characterized in that: The manufacturing equipment also includes a fixed frame, on which a second motor is fixedly connected. A swing arm is fixedly connected to the output shaft of the second motor, and a discharge fork is fixedly connected to the end of the swing arm.
6. The glass container manufacturing equipment according to claim 5, characterized in that: The unloading fork has an inverted conical cross-section.
7. The glass container manufacturing equipment according to claim 6, characterized in that: A limit groove is provided on the fixed frame, and a conveyor plate is slidably connected in the limit groove.
8. The glass container manufacturing equipment according to claim 7, characterized in that: The conveyor plate has multiple positioning holes, and a drive device for driving the conveyor plate is connected to the fixing frame.
9. A glass container manufactured using the manufacturing equipment according to claim 8, characterized in that: The glass container is a double-walled stemmed glass, including a base, an outer wall integrally formed at the top of the base, and an inner wall integrally formed inside the outer wall.
10. A process for manufacturing glass containers using the manufacturing equipment of claim 8, characterized in that: The process includes the following steps: Step 1: Place the outer wall of the stemmed glass onto the rotatable insert, start the first motor to drive the friction roller to rotate the glass body at a uniform speed, in preparation for uniform heating; Step 2: Combustible gas is transported through the inlet pipe to the annular bend, where multiple nozzles spray flames to concentrate heat on the upper surface of the rotating cup, causing it to soften evenly. Step 3: The electric actuator moves downward, pushing the slide bar and the slide plug downward through the spring, generating negative pressure inside the sealed cup, causing the heated part to indent inward, completing the initial shaping; Step 4: After the slider is limited by the retaining ring, the electric push rod continues to descend and compress the spring, driving the pressure head to apply pressure to the recessed area separately, accurately forming the inner wall and completing the double-layer structure; Step 5: After forming, the second motor drives the unloading fork to rotate 180°, and the stem cup is placed into the positioning hole of the conveyor plate for positioning. The batch is then transferred for annealing.