An external firing device for producing glass cups and its firing method

Abstract

The present invention discloses an external firing device for glass cup production and its firing method, belonging to the technical field of glass cup production. An external firing device for glass cup production and its firing method includes a firing table, and also includes a material feeding turntable which is arranged above the firing table. A spray gun assembly is arranged above the material feeding turntable. A glass clamping table is arranged on one side of the spray gun assembly. A printing assembly is arranged on one side of the glass clamping table. An integrally formed lubricating hoop disc is arranged on the outer side of the material feeding turntable. To solve the problem that the method of using machine engraving to engrave the surface of the cup body will change the original thickness of the cup body, thus resulting in damage to the strength of the cup body, the glass tube is attached to the surface of the printing roller sleeve by a pressure roller. The softened glass surface is affected by the concave and convex characters on the surface of the roller sleeve, so that corresponding patterns appear. The patterns produced by this surface processing method and the cup body are an integrated structure and will not affect the original strength of the cup body.

Description

Technical Field

[0001] The present invention relates to the technical field of glass cup production, and specifically to an outer surface firing device and a firing method for glass cup production. Background Art

[0002] A glass cup refers to a cup made of glass, usually made of raw material high borosilicate glass, fired at a high temperature of more than 600 degrees Celsius. During production, a engraving machine is required to perform operations such as engraving on the surface of the glass cup. Engraving is a combined drilling and milling process in terms of processing principle, and the engraving machine has various data input modes and can handle them with ease according to needs;

[0003] Chinese Patent with publication number CN215790920U discloses an engraving device for glass cup production with an anti-breakage structure. This engraving device for glass cup production with an anti-breakage structure adopts a protective structure, which will not damage the surface of the cup when limiting and fixing the cup, avoiding the situation of breakage during processing, and has a disassembly and assembly structure, which can timely replace the parts of the device to ensure the integrity of the device.

[0004] In the above patent, a machine engraving method is used to engrave the surface of the cup body. This method will change the original thickness of the cup body, resulting in damage to the strength of the cup body; therefore, it does not meet the existing requirements, and for this reason, an outer surface firing device and a firing method for glass cup production are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an outer surface firing device and a firing method for glass cup production. By using a pressure roller to attach the glass tube to the surface of the printing roller sleeve, the softened glass surface is affected by the concave and convex characters on the surface of the roller sleeve, resulting in corresponding patterns. The patterns produced by this surface processing method are an integral structure with the cup body and will not affect the original strength of the cup body, which can solve the problems in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An outer surface firing device for glass cup production, including a firing table, and further including a feeding turntable, which is arranged above the firing table. A spray gun assembly is arranged above the feeding turntable. A glass clamping table is arranged on one side of the spray gun assembly. A printing assembly is arranged on one side of the glass clamping table. An integrally formed lubricating hoop is arranged on the outer side of the feeding turntable. Bearing beads are arranged inside the lubricating hoop. A bearing disc is arranged inside the feeding turntable. An air inlet pipe is arranged inside the bearing disc. An inner tank cavity is arranged inside the firing table. A horizontal support is arranged at the bottom of the firing table. A driving shaft seat is arranged inside the inner tank cavity. An air storage valve tank is arranged inside the driving shaft seat. The air inlet pipe extends into the air storage valve tank.

[0007] Preferably, a top support ring plate is integrally formed on the top of the firing table. The lubricating hoop disc is slidably connected to the top support ring plate through bearing beads. An inner ring bearing is arranged between the air storage valve tank and the driving shaft seat, and the air storage valve tank is rotatably connected to the driving shaft seat through the inner ring bearing.

[0008] Preferably, an air supply pipeline is arranged at the bottom of the spray gun assembly. The spray gun assembly is connected to the air storage valve tank through the air supply pipeline. A valve pipe is arranged inside the spray gun assembly. The valve pipe is connected to the air supply pipeline through a flange. A pipe sleeve is arranged at one end of the valve pipe, and the pipe sleeve is connected to the material feeding turntable through a card slot.

[0009] Preferably, a plurality of shunt pipelines are arranged on one side of the valve pipe. The shunt pipelines extend to the outside of the spray gun assembly. An air valve is arranged at one end of the shunt pipeline. The air valve is connected to the shunt pipeline through an internal thread. An air nozzle is arranged on the outer surface of the air valve.

[0010] Preferably, a sparking bead is arranged inside the air valve. A rubbing plate is arranged on the outside of the sparking bead. The rubbing plate is connected to the air valve, and the sparking bead is in fit connection with the rubbing plate.

[0011] Preferably, a power supply card seat is arranged at the bottom of the glass clamping table. A linkage shaft is arranged below the power supply card seat. A driven gear is arranged at the bottom of the linkage shaft. The power supply card seat is rotatably connected to the material feeding turntable through the linkage shaft.

[0012] Preferably, a plurality of telescopic shaft grooves are arranged on the outer surface of the glass clamping table. A push shaft is arranged inside the telescopic shaft grooves. The push shaft is slidably connected to the telescopic shaft grooves. A pressing roller is arranged on the outer surface of the push shaft. The pressing roller is rotatably connected to the push shaft.

[0013] Preferably, the printing assembly includes a printing roller sleeve and a locking shaft. A driving shaft is arranged below the locking shaft. A driving gear is arranged below the driving shaft. The driving gear is meshed with the driven gear. A motor is arranged below the driving gear. The motor is connected to the driving shaft through a transmission belt box.

[0014] Preferably, a locking sleeve is arranged inside the locking shaft. The locking sleeve is connected to the locking shaft through a card slot. The printing roller sleeve is combined with the locking shaft. A locking rod is arranged above the locking sleeve. The locking rod is connected to the locking sleeve through an internal thread.

[0015] The present invention also provides another technical solution: a firing method for an outer firing device for producing glass cups, including the following steps:

[0016] Step 1: Place the glass tube set for making the cup body above the glass clamping table. Replace the printing roller sleeve with the corresponding character shape according to the processing requirements, and fix the printing roller sleeve to the locking shaft through the locking rod. At this time, the glass clamping table and the printing assembly rotate in opposite directions driven by the motor;

[0017] Step 2: The push shaft on the surface of the glass clamping table moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressure roller on the surface of the push shaft contacts the inner wall of the glass tube. During this process, the glass clamping table and the power card holder will also rotate;

[0018] Step 3: Natural gas is input into the gas storage valve tank through the air inlet pipe, and then transported to the spray gun assembly through the air supply pipe. After the gas enters the valve pipe, the valve at the gas valve opens, and the natural gas enters the gas valve. The instantaneous air pressure is used to drive the ignition bead to rotate, and the ignition bead rubs against the wiper to generate sparks, completing the ignition operation;

[0019] Step 4: The flame heats the glass tube on the glass clamp through the air nozzle. The heated glass tube will soften. At this time, the pressure roller is used to attach the glass tube to the surface of the printing roller sleeve. The softened glass surface is affected by the concave and convex characters on the roller sleeve surface, thus forming a corresponding pattern.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention sets the glass tube used to make the cup body on the top of the glass clamping table, replaces the printing roller sleeve with the corresponding character shape according to the processing requirements, and fixes the printing roller sleeve and the lock shaft by the locking rod. At this time, the glass clamping table and the printing assembly rotate in opposite directions under the drive of the motor. The push shaft on the surface of the glass clamping table moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressure roller on the surface of the push shaft contacts the inner wall of the glass tube. During the process, the glass clamping table and the power card holder also rotate. The flame heats the glass tube on the glass clamping table through the air nozzle. The heated glass tube will soften. At this time, the pressure roller is used to attach the glass tube to the surface of the printing roller sleeve. The softened glass surface is affected by the concave and convex characters on the surface of the roller sleeve, so that the corresponding pattern appears. The texture produced by this surface processing method is an integrated structure with the cup body and will not affect the original strength of the cup body.

[0022] 2. In the present invention, natural gas is input into the gas storage valve tank through the air intake pipe, and then transported to the spray gun assembly through the air supply pipe. After the gas enters the valve tube, the valve at the gas valve opens, and the natural gas enters the gas valve. The instantaneous air pressure is used to drive the ignition bead to rotate, and the ignition bead rubs with the wiper to generate sparks, completing the ignition operation. Different from the traditional electronic ignition, the ignition bead will not be affected by high temperature burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall front view of the present invention;

[0024] Figure 2 Schematic diagram of the overall internal structure of the present invention;

[0025] Figure 3Schematic diagram of the overall decomposition structure of the present invention;

[0026] Figure 4 Schematic diagram of the glass clamping table structure of the present invention;

[0027] Figure 5 Schematic diagram of the partial structure of the fixed table of the present invention;

[0028] Figure 6 Schematic diagram of the printing component structure of the present invention.

[0029] In the figure: 1, firing table; 2, material feeding turntable; 3, spray gun assembly; 4, printing component; 5, glass clamping table; 101, horizontal support; 102, top support ring plate; 103, inner tank cavity; 104, drive shaft seat; 105, air storage valve tank; 106, inner ring bearing; 201, lubricating hoop plate; 202, bearing plate; 203, intake pipeline; 2011, bearing beads; 301, air supply pipeline; 302, valve pipe; 303, pipe sleeve; 304, shunt pipeline; 305, air valve; 3051, air nozzle; 3052, ignition beads; 3053, scrubbing plate; 401, locking shaft; 402, locking sleeve; 403, printing roller sleeve; 404, locking rod; 405, driving shaft; 406, motor; 4051, driving gear; 4061, drive belt box; 501, power supply card seat; 502, linkage shaft; 503, telescopic shaft groove; 504, push shaft; 505, pressing roller; 5021, driven gear. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to solve the problem that the existing method of machine engraving is used to engrave the surface of the cup body, which will change the original thickness of the cup body and thus damage the strength of the cup body, please refer to Figures 1-3 , the following technical solutions are provided in this embodiment:

[0032] An external firing device for the production of glass cups, including a firing table 1, further including a feeding turntable 2, which is arranged above the firing table 1. Above the feeding turntable 2, there is a spray gun assembly 3. On one side of the spray gun assembly 3, there is a glass clamping table 5. On one side of the glass clamping table 5, there is a printing assembly 4. On the outer side of the feeding turntable 2, there is an integrally formed lubricating hoop plate 201. Inside the lubricating hoop plate 201, there are bearing beads 2011. Inside the feeding turntable 2, there is a bearing plate 202. Inside the bearing plate 202, there is an air inlet pipe 203. Inside the firing table 1, there is an inner tank cavity 103. At the bottom of the firing table 1, there is a horizontal support 101. Inside the inner tank cavity 103, there is a driving shaft seat 104. Inside the driving shaft seat 104, there is a gas storage valve tank 105. The air inlet pipe 203 extends into the gas storage valve tank 105. On the top of the firing table 1, there is an integrally formed top support ring plate 102. The lubricating hoop plate 201 is slidably connected to the top support ring plate 102 through the bearing beads 2011. The lubricating hoop plate 201 can reduce the frictional resistance and improve the rotation efficiency of the feeding turntable 2. Between the gas storage valve tank 105 and the driving shaft seat 104, there is an inner ring bearing 106. The gas storage valve tank 105 is rotatably connected to the driving shaft seat 104 through the inner ring bearing 106.

[0033] To solve the problem that the traditional electric ignition method is easily affected by high temperature during use, please refer to Figure 4 , the following technical solutions are provided in this embodiment:

[0034] At the bottom of the spray gun assembly 3, there is a gas supply pipe 301. The spray gun assembly 3 is connected to the gas storage valve tank 105 through the gas supply pipe 301. Inside the spray gun assembly 3, there is a valve pipe 302. The valve pipe 302 is connected to the gas supply pipe 301 through a flange. At one end of the valve pipe 302, there is a pipe sleeve 303. The pipe sleeve 303 is connected to the feeding turntable 2 through a card slot. On one side of the valve pipe 302, there are multiple shunt pipes 304. The shunt pipes 304 extend to the outside of the spray gun assembly 3. At one end of the shunt pipe 304, there is a gas valve 305. The gas valve 305 is connected to the shunt pipe 304 through an internal thread. On the outer surface of the gas valve 305, there is a gas nozzle 3051. Inside the gas valve 305, there is a sparking bead 3052. On the outside of the sparking bead 3052, there is a rubbing plate 3053. The rubbing plate 3053 is connected to the gas valve 305. The sparking bead 3052 is in fit connection with the rubbing plate 3053. Natural gas is input into the gas storage valve tank 105 through the air inlet pipe 203, and then is transported to the spray gun assembly 3 through the gas supply pipe 301. After the gas enters the internal part of the valve pipe 302, the valve at the gas valve 305 is opened, and the natural gas enters the gas valve 305. The instantaneous air pressure is used to push the sparking bead 3052 to rotate. The sparking bead 3052 rubs against the rubbing plate 3053 to generate a spark, completing the ignition operation. Different from the traditional electronic ignition, the sparking bead 3052 will not be affected by high-temperature burning.

[0035] In order to solve the problem that the existing machine engraving method is used to engrave the surface of the cup body, which will change the original thickness of the cup body and thus damage the strength of the cup body, please refer to Figures 5-6 , the following technical solutions are provided in this embodiment:

[0036] A power socket 501 is provided at the bottom of the glass clamping table 5. A linkage shaft 502 is provided below the power socket 501. A driven gear 5021 is provided at the bottom of the linkage shaft 502. The power socket 501 is rotationally connected to the feeding turntable 2 through the linkage shaft 502. A plurality of telescopic shaft grooves 503 are provided on the outer surface of the glass clamping table 5. A push shaft 504 is provided inside the telescopic shaft groove 503. The push shaft 504 is slidably connected to the telescopic shaft groove 503. A pressure roller 505 is provided on the outer surface of the push shaft 504. The pressure roller 505 is rotationally connected to the push shaft 504. The printing assembly 4 includes a printing roller sleeve 403 and a locking shaft 401. A driving shaft 405 is provided below the locking shaft 401. A driving gear 4051 is provided below the driving shaft 405. The driving gear 4051 is meshed with the driven gear 5021. A motor 406 is provided below the driving gear 4051. The motor 406 is connected to the driving shaft 405 through a transmission belt box 4061. A locking sleeve 402 is provided inside the locking shaft 401. The locking sleeve 402 is connected to the locking shaft 401 through a card slot. The printing roller sleeve 403 is combined with the locking shaft 401. A locking rod 404 is provided above the locking sleeve 402. The locking rod 404 is connected to the locking sleeve 402 through internal threads. The glass tube sleeve 303 for making the cup body is installed above the glass clamping table 5. The corresponding printing roller sleeve 403 with the character shape is replaced according to the processing requirements, and the printing roller sleeve 403 is fixed to the locking shaft 401 through the locking rod 404. At this time, the glass clamping table 5 and the printing assembly 4 rotate in opposite directions under the drive of the motor 406. The push shaft 504 on the surface of the glass clamping table 5 moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressure roller 505 on the surface of the push shaft 504 contacts the inner wall of the glass tube. During the process, the glass clamping table 5 and the power socket 501 will also rotate. The flame heats the glass tube on the glass clamping table 5 through the gas nozzle 3051. The heated glass tube will soften. At this time, the pressure roller 505 is used to attach the glass tube to the surface of the printing roller sleeve 403. The softened glass surface is affected by the concave and convex characters on the surface of the roller sleeve, so corresponding patterns appear. The patterns produced by this surface processing method are integrated with the cup body and will not affect the original strength of the cup body.

[0037] In order to better display the process of external firing for glass cup production, this embodiment also proposes a firing method for the external firing device for glass cup production, including the following steps:

[0038] Step 1: Install the glass tube sleeve 303 used to make the cup body on the glass clamping platform 5, replace it with a printing roller sleeve 403 of the corresponding character shape according to the processing requirements, and fix the printing roller sleeve 403 to the lock shaft 401 through the locking rod 404. At this time, the glass clamping platform 5 and the printing assembly 4 rotate in opposite directions under the drive of the motor 406;

[0039] Step 2: The push shaft 504 on the surface of the glass clamping table 5 moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressure roller 505 on the surface of the push shaft 504 contacts the inner wall of the glass tube. During this process, the glass clamping table 5 and the power supply holder 501 also rotate;

[0040] Step 3: Natural gas is fed into the gas storage valve tank 105 through the air inlet pipe 203, and then transported to the spray gun assembly 3 through the air supply pipe 301. After the gas enters the valve tube 302, the valve at the gas valve 305 opens, and the natural gas enters the gas valve 305. The instantaneous air pressure drives the ignition bead 3052 to rotate, and the ignition bead 3052 rubs against the wiper 3053 to generate sparks, completing the ignition operation;

[0041] Step 4: The flame heats the glass tube on the glass clamping table 5 through the air nozzle 3051. The heated glass tube will soften. At this time, the pressure roller 505 is used to attach the glass tube to the surface of the printing roller sleeve 403. The softened glass surface is affected by the concave and convex characters on the roller sleeve surface, thereby appearing a corresponding pattern.

[0042] Working principle: the glass tube sleeve 303 used to make the cup body is installed above the glass clamping table 5, and the printing roller sleeve 403 with the corresponding character shape is replaced according to the processing requirements, and the printing roller sleeve 403 is fixed to the lock shaft 401 by the locking rod 404. At this time, the glass clamping table 5 and the printing component 4 rotate in opposite directions under the drive of the motor 406, and the push shaft 504 on the surface of the glass clamping table 5 moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressure roller 505 on the surface of the push shaft 504 contacts the inner wall of the glass tube. During the process, the glass clamping table 5 and the power card holder 501 will also rotate. The flame heats the glass tube on the glass clamping table 5 through the air nozzle 3051. The heated glass tube will soften. At this time, the pressure roller 505 is used to attach the glass tube to the surface of the printing roller sleeve 403. The softened glass surface is affected by the concave and convex characters on the surface of the roller sleeve, thereby appearing the corresponding pattern. The texture produced by this surface processing method is an integrated structure with the cup body and will not affect the original strength of the cup body.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external firing device for producing glass cups, comprising a firing table (1), characterized in that ； It also includes a feeding turntable (2), which is arranged above the firing table (1). Above the feeding turntable (2), there is a spray gun assembly (3). On one side of the spray gun assembly (3), there is a glass clamping table (5). On one side of the glass clamping table (5), there is a printing assembly (4). On the outer side of the feeding turntable (2), there is an integrally formed lubricating hoop disc (201). Inside the lubricating hoop disc (201), there are bearing beads (2011). Inside the feeding turntable (2), there is a bearing disc (202). Inside the bearing disc (202), there is an air inlet pipe (203). Inside the firing table (1), there is an inner tank cavity (103). At the bottom of the firing table (1), there is a horizontal support (101). Inside the inner tank cavity (103), there is a driving shaft seat (104). Inside the driving shaft seat (104), there is a gas storage valve tank (105). The air inlet pipe (203) extends into the gas storage valve tank (105). On the outer surface of the glass clamping table (5), there are a plurality of telescopic shaft grooves (503). Inside the telescopic shaft grooves (503), there is a push shaft (504). The push shaft (504) is slidably connected to the telescopic shaft grooves (503). On the outer surface of the push shaft (504), there is a pressure roller (505). The pressure roller (505) is rotatably connected to the push shaft (504). The printing assembly (4) includes a printing roller sleeve (403) and a locking shaft (401). Below the locking shaft (401), there is a driving shaft (405). Below the driving shaft (405), there is a driving gear (4051). The driving gear (4051) is meshed with a driven gear (5021). Below the driving gear (4051), there is a motor (406). The motor (406) is connected to the driving shaft (405) through a transmission belt box (4061). Inside the locking shaft (401), there is a locking sleeve (402). The locking sleeve (402) is connected to the locking shaft (401) through a card slot. The printing roller sleeve (403) is combined with the locking shaft (401). Above the locking sleeve (402), there is a locking rod (404). The locking rod (404) is connected to the locking sleeve (402) through internal threads.

2. The outer firing device for producing glass cups according to claim 1, characterized in that: On the top of the firing table (1), there is an integrally formed top support ring plate (102). The lubricating hoop disc (201) is slidably connected to the top support ring plate (102) through the bearing beads (2011). Between the gas storage valve tank (105) and the driving shaft seat (104), there is an inner ring bearing (106). The gas storage valve tank (105) is rotatably connected to the driving shaft seat (104) through the inner ring bearing (106).

3. An external firing device for producing glass cups according to claim 2, characterized in that: A gas supply pipe (301) is provided at the bottom of the spray gun assembly (3). The spray gun assembly (3) is connected to the gas storage valve tank (105) through the gas supply pipe (301). A valve pipe (302) is provided inside the spray gun assembly (3). The valve pipe (302) is connected to the gas supply pipe (301) by a flange. One end of the valve pipe (302) is provided with a pipe sleeve (303). The pipe sleeve (303) is connected to the material feeding turntable (2) through a card slot.

4. An external firing device for producing glass cups according to claim 3, characterized in that: A plurality of shunt pipes (304) are provided on one side of the valve pipe (302). The shunt pipes (304) extend to the outside of the spray gun assembly (3). One end of the shunt pipe (304) is provided with a gas valve (305). The gas valve (305) is connected to the shunt pipe (304) by internal threads. A gas nozzle (3051) is provided on the outer surface of the gas valve (305).

5. An external firing device for the production of glass cups according to claim 4, characterized in that: A sparking bead (3052) is provided inside the gas valve (305). A rubbing plate (3053) is provided outside the sparking bead (3052). The rubbing plate (3053) is connected to the gas valve (305). The sparking bead (3052) is in fit connection with the rubbing plate (3053).

6. The surface firing device for producing glass cups according to claim 5, characterized in that: A power supply card seat (501) is provided at the bottom of the glass clamping table (5). A linkage shaft (502) is provided below the power supply card seat (501). A driven gear (5021) is provided at the bottom of the linkage shaft (502). The power supply card seat (501) is rotationally connected to the material feeding turntable (2) through the linkage shaft (502).

7. A firing method for an external firing device used in the production of glass cups, implemented based on the external firing device for glass cup production described in claim 6, wherein, Including the following steps: Step 1: Set the glass tube set for making the cup body above the glass clamping table (5). Replace the printing roller sleeve (403) with the corresponding character shape according to the processing requirements, and fix the printing roller sleeve (403) to the locking shaft (401) through the locking rod (404). At this time, the glass clamping table (5) and the printing assembly (4) rotate in opposite directions under the drive of the motor (406). Step 2: The push shaft (504) on the surface of the glass clamping table (5) moves outward and expands according to the processing requirements of the inner diameter of the cup body, so that the pressing roller (505) on the surface of the push shaft (504) contacts the inner wall of the glass tube. During this process, the glass clamping table (5) and the power supply card seat (501) will also rotate. Step 3: Input natural gas into the gas storage valve tank (105) through the air inlet pipe (203), and then transport the natural gas to the spray gun assembly (3) through the gas supply pipe (301). After the gas enters the valve pipe (302), the valve at the gas valve (305) opens, and the natural gas enters the gas valve (305). Use the instantaneous air pressure to push the sparking bead (3052) to rotate. The sparking bead (3052) rubs against the rubbing plate (3053) to generate a spark, completing the ignition operation. Step 4: The flame heats the glass tube on the glass clamping table (5) through the gas nozzle (3051). The heated glass tube will be softened. At this time, use the pressing roller (505) to attach the glass tube to the surface of the printing roller sleeve (403). The softened glass surface is affected by the concave and convex characters on the roller sleeve surface, so that corresponding patterns appear.

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