Vacuum heating furnace for producing integrally formed glass

Abstract

The invention discloses a vacuum heating furnace for producing integrally formed glass, which comprises a furnace frame, a control box and a furnace body which are arranged on the furnace frame in a left-right manner, a control panel is arranged on the control box, and a support frame which is horizontally arranged and can ascend and descend is arranged in the control box. The right end of the supporting frame penetrates out of a right box plate of the control box and is provided with a vacuum cavity located above the furnace body. The bottom of the vacuum cavity is provided with a plurality of connecting pipes which are vertically arranged downwards, communicated with the vacuum cavity and used for being connected with the glass outer sleeve, and the vacuum cavity is further connected with a vacuum pump arranged in the control box; and station holes which are communicated with the heating cavity in the furnace body and are used for enabling the glass outer sleeve to penetrate into and out of the furnace body under the driving of the supporting frame so as to heat and cool the glass outer sleeve are formed in the positions, corresponding to the connecting pipes one by one, of the top of the furnace body. Rapid vacuumizing, heating, cooling and batch preparation can be achieved, so that the production period is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of glass production, and in particular to a vacuum heating furnace for producing integrally formed glass. Background Art

[0002] The existing one-piece forming preparation method of a polygonal cross-section glass tube can prepare an one-piece glass tube with a polygonal cross-section by coaxially positioning a solid metal mold in a glass outer tube, and then vacuuming and heating the glass outer tube. Compared with the traditional preparation method, the preparation process is simple to operate, uses less equipment, and has a simple forming process, which can greatly shorten the production cycle, improve preparation efficiency, and ensure the quality and performance of the finished product. However, in the prior art, there is no dedicated equipment for this one-piece forming preparation method of a polygonal cross-section glass tube to achieve rapid vacuuming and heating, rapid cooling after heating, and batch preparation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a vacuum heating furnace for producing one-piece molded glass, which can realize rapid vacuuming, heating, cooling and batch preparation, thereby improving production efficiency.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0005] A vacuum heating furnace for producing integrally formed glass comprises a furnace frame, on which a control box and a furnace body are arranged on the left and right, and a control panel for realizing control and human-machine interaction is arranged on the control box, wherein a horizontally arranged and liftable support frame is arranged in the control box, and the right end of the support frame passes through the right box plate of the control box and is provided with a vacuum cavity located above the furnace body; a plurality of connecting pipes arranged vertically downward and connected to the vacuum cavity and used for connecting a glass outer sleeve are arranged at the bottom of the vacuum cavity, and the vacuum cavity is also connected to a vacuum pump arranged in the control box and used for evacuating the glass outer sleeve through the vacuum cavity and the connecting pipe; a station hole is provided on the top of the furnace body at a position corresponding to each connecting pipe, which is connected to the heating cavity in the furnace body and is used for the glass outer sleeve to pass into and out of the furnace body driven by the support frame to realize heating and cooling of the glass outer sleeve; the output end of the control panel is respectively connected to the vacuum pump and the controlled end of the furnace body.

[0006] Preferably, the inner wall of the furnace body is provided with an insulation layer for enclosing a heating cavity and achieving heat preservation, and the top insulation layer is provided with through holes connected to the work station holes and used to pass through the glass outer sleeve at positions opposite to the work station holes, and the bottom insulation layer is provided with a heating wire for heating the heating cavity to achieve heating of the glass outer sleeve, and the insulation layer is also provided with a temperature sensor for monitoring the temperature in the heating cavity; the input end of the control panel is connected to the output end of the temperature sensor, and the output end of the control panel is connected to the controlled end of the heating wire.

[0007] Preferably, the inner wall of the work station hole is covered with a sealing sleeve for contacting with the outer wall of the glass outer sleeve to achieve sealing, and the sealing sleeve is detachably provided with a plug for sealing the work station hole.

[0008] Preferably, the connecting tube comprises several sections of single tubes which are sealed and connected by flanges so as to adjust the length to adapt to glass outer sleeves of different lengths. The bottom of the connecting tube is sealed and plugged with the glass outer sleeve and is provided with a lock for locking the glass outer sleeve. The bottom of the connecting tube is also removably provided with an end cap for sealing the connecting tube.

[0009] Preferably, a mold is provided in the glass outer sleeve, and a push rod is provided in the connecting tube for cooperating with the glass outer sleeve to press the mold tightly and realize coaxial positioning of the mold and the glass outer sleeve.

[0010] Preferably, a motor is provided in the control box, and the controlled end of the motor is connected to the output end of the control panel. The motor is connected to two parallel screw rods which are longitudinally and rotationally arranged on the inner side of the right box plate of the control box through a transmission assembly. The two screw rods are respectively connected to the two sides of the left end of the support frame through screw nuts. A slideway which slides with the support frame and is used to avoid the support frame during the lifting and lowering process of the support frame is provided on the right box plate of the control box.

[0011] Preferably, the vacuum cavity is connected to a vacuum port, which is connected to a vacuum pump through a vacuum pipe, and a vacuum solenoid valve for controlling the on and off of the vacuum pipe is provided on the vacuum pipe; the control box is provided with an analog vacuum pressure gauge connected to the vacuum pipe for measuring the vacuum degree; the input end of the control panel is connected to the output end of the analog vacuum pressure gauge, and the output end of the control panel is connected to the controlled end of the vacuum solenoid valve.

[0012] Preferably, a plurality of cooling fans for blowing air to the glass outer casing to accelerate the cooling of the glass outer casing are arranged on the right box plate of the control box, the air inlet of the cooling fan is connected to the air inlet duct, a filter plate for dust removal is arranged in the air inlet duct, and an air intake solenoid valve for controlling the on and off of the air inlet duct is also arranged on the air inlet duct; the output end of the control panel is respectively connected to the controlled end of the cooling fan and the air intake solenoid valve.

[0013] Preferably, a Forma wheel for fixing and moving the vacuum heating furnace is provided at the bottom of the furnace rack.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The present invention can realize rapid vacuuming, heating, cooling and batch preparation by providing a liftable support frame, a vacuum chamber, a connecting pipe and a furnace body, thereby shortening the production cycle and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a cross-sectional view of the heating position of the present invention;

[0018] Figure 3 It is a cross-sectional view of the cooling position of the present invention;

[0019] Figure 4 It is a cross-sectional view of the furnace body of the present invention;

[0020] Figure 5 It is a schematic diagram of the furnace structure of the present invention.

[0021] Among them: 1. furnace frame, 2. furnace body, 21. insulation layer, 22. heating wire, 23. work station hole, 24. sealing sleeve, 3. control box, 31. slideway, 4. vacuum chamber, 41. vacuum port, 5. connecting pipe, 6. glass outer sleeve, 7. cooling fan, 8. control panel, 9. analog vacuum pressure gauge, 10. motor, 11. screw, 12. support frame, 13. Fumar wheel. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] A vacuum heating furnace for producing integrally formed glass, combined with Figures 1 to 4As shown, it includes a furnace frame 1, on which a control box 3 and a furnace body 2 are arranged, and the control box 3 and the furnace body 2 are arranged on the left and right. A horizontally arranged and liftable support frame 12 is arranged in the control box 3, and the right end of the support frame 12 passes through the right box plate of the control box 3 and is provided with a vacuum cavity 4, which is located above the furnace body 2; the bottom of the vacuum cavity 4 is provided with a plurality of connecting pipes 5 arranged vertically downward and connected to the vacuum cavity 4, and the connecting pipes 5 are used to connect the glass outer sleeve 6; the vacuum cavity 4 is also connected to a vacuum pump, which is arranged in the control box 3, and the vacuum pump is used to realize vacuuming of the glass outer sleeve 6 through the vacuum cavity 4 and the connecting pipes 5. A station hole 23 is opened at a position corresponding to each connecting pipe 5 on the top of the furnace body 2, and the station hole 23 is connected to the heating cavity in the furnace body 2, and the station hole 23 is used for the glass outer sleeve 6 to pass into and out of the furnace body 2 driven by the support frame 12, so as to realize heating and cooling of the glass outer sleeve 6.

[0024] The vacuum chamber 4 can be connected to several glass outer sleeves 6 at a time through the connecting tube 5, so that several glass outer sleeves 6 can be evacuated at the same time, which greatly shortens the evacuation time compared to evacuating one tube at a time. The vacuum chamber 4 is connected to a vacuum port 41, which is connected to a vacuum pump through a vacuum pipe. A vacuum solenoid valve 11 is provided on the vacuum pipe, and the vacuum solenoid valve 11 is used to control the on and off of the vacuum pipe. The control box 3 is provided with an analog vacuum pressure gauge 9, which is connected to the vacuum pipe, and the analog vacuum pressure gauge 9 is used to measure the vacuum degree.

[0025] The control box 3 is provided with a motor 10, and the motor 10 is connected with two screw rods 11 through a transmission assembly. The two screw rods 11 are arranged in parallel and are longitudinally and rotationally arranged on the inner side of the right box plate of the control box 3, respectively. The two screw rods 11 are connected to the left ends of the support frame 12 through screw rod nuts. When in use, the motor 10 drives the screw rod 11 to rotate forward and reverse, and the screw rod 11 rotates forward and reversely to realize the lifting and lowering of the support frame 12. The lifting and lowering of the support frame 12 drives the vacuum chamber 4 to lift and lower, and the lifting and lowering of the vacuum chamber 4 drives the connecting pipe 5 and the glass outer sleeve 6 to lift and lower, so that the glass outer sleeve 6 penetrates into the furnace body 2 and is located at the heating position, such as Figure 2 and the glass outer sleeve 6 passes through the furnace body 2 and moves outdoors to a cooling position, such as Figure 3 As shown, the glass outer sleeve 6 can be directly moved to room temperature after being formed, which greatly improves the cooling speed compared to the existing furnace that cannot take out the product directly after heating. A slide 31 is provided on the right box plate of the control box 3, and the slide 31 is slidably matched with the support frame 12. The slide 31 is used to avoid the support frame 12 during the lifting process of the support frame 12.

[0026] A plurality of cooling fans 7 are arranged on the right box plate of the control box 3, and the cooling fans 7 are used to blow air to the glass outer casing 6, so as to accelerate the cooling of the glass outer casing 6. The air inlet of the cooling fan 7 is connected with an air inlet duct, and a filter plate is arranged in the air inlet duct, and the filter plate is used for dust removal; an air inlet solenoid valve is also arranged on the air inlet duct, and the air inlet solenoid valve is used to control the on and off of the air inlet duct.

[0027] The connecting tube 5 includes several sections of single tubes, each of which is sealed and connected by a flange, so that the length of the connecting tube 5 can be adjusted to accommodate glass outer sleeves 6 of different lengths. The bottom of the connecting tube 5 is sealed and plugged with the glass outer sleeve 6, and a lock is also provided at the bottom of the connecting tube 5, which is used to lock the glass outer sleeve 6 to prevent the glass outer sleeve 6 from accidentally falling off. The bottom of the connecting tube 5 is also detachably provided with an end cap. When part of the connecting tube 5 is not connected to the glass outer sleeve 6, in order not to affect the vacuuming of the connected glass outer sleeve 6, the end cap is used to seal the connecting tube 5 that is not connected to the glass outer sleeve 6.

[0028] A mold is provided in the glass outer sleeve 6, and the mold is used to realize partial attachment and molding after the glass outer sleeve 6 is evacuated and heated to soften. In order to ensure that the mold and the glass outer sleeve 6 are coaxially positioned, a push rod is provided in the connecting tube 5, and the push rod is used to contact with the top of the mold to support the mold, thereby cooperating with the glass outer sleeve 6 to tighten the mold, ensuring that the mold and the glass outer sleeve 6 are always coaxially positioned.

[0029] The inner wall of the furnace body 2 is provided with an insulation layer 21, which is used to enclose a heating cavity and achieve heat preservation. The top insulation layer 21 is provided with through holes at positions opposite to the station holes 23, which are connected to the station holes 23 and are used to pass through the glass outer sleeve 6; the bottom insulation layer 21 is provided with a heating wire 22, which is used to quickly heat the heating cavity, thereby achieving rapid heating of the glass outer sleeve 6. The insulation layer 21 is also provided with a temperature sensor, which is used to monitor the temperature in the heating cavity.

[0030] The inner wall of the station hole 23 is covered with a sealing sleeve 24, which is made of high temperature resistant rubber material and is used to contact the outer wall of the glass outer sleeve 6 to achieve sealing. The top of the sealing sleeve 24 is provided with a flange, which is connected to the outer wall of the furnace body 2. The sealing sleeve 24 can also be detachably provided with a plug, which is made of high temperature resistant rubber material. When part of the station hole 23 does not need to pass through the glass outer sleeve 6, the station hole 23 is blocked with the plug, thereby preventing the temperature in the furnace body 2 from dissipating outward.

[0031] A Forma wheel 13 is provided at the bottom of the furnace frame 1, and the Forma wheel 13 is used to fix and move the vacuum heating furnace.

[0032] The control box 3 is also provided with a control panel 8, which is used to realize control and human-computer interaction. The input end of the control panel 8 is respectively connected to the output end of the analog vacuum pressure gauge 9 and the temperature sensor, and the output end of the control panel 8 is respectively connected to the controlled end of the vacuum pump, the vacuum solenoid valve 11, the motor 10, the air intake solenoid valve, the cooling fan 7 and the heating wire 22 of the furnace body 2, thereby realizing the control of the present invention.

[0033] When the present invention is in use, the glass outer sleeve 6 of the built-in mold is connected to the connecting pipe 5, and the vacuum pump is turned on to evacuate the glass outer sleeve 6. When the vacuum degree reaches the set value, the vacuum solenoid valve 11 is controlled to block the vacuum pipeline and the vacuum pump is turned off at the same time; the driving motor 10 drives the support frame 12 to descend, thereby driving the glass outer sleeve 6 to descend and penetrate into the furnace body 2, and the heating wire 22 is started to quickly heat the glass outer sleeve 6. After molding, the driving motor 10 drives the support frame 12 to rise, thereby driving the glass outer sleeve 6 to rise and penetrate out of the furnace body 2, so that the glass outer sleeve 6 is moved from the high temperature zone to room temperature for rapid cooling. At the same time, the heat dissipation fan 7 is started to blow air to dissipate heat to the glass outer sleeve 6, thereby further accelerating the cooling of the glass outer sleeve 6.

Claims

1. A vacuum heating furnace for producing integrally formed glass, comprising a furnace frame (1), a control box (3) and a furnace body (2) arranged on the left and right of the furnace frame (1), a control panel (8) for realizing control and human-machine interaction arranged on the control box (3), characterized in that: The control box (3) is provided with a horizontally arranged and liftable support frame (12), the right end of the support frame (12) passes through the right box plate of the control box (3) and is provided with a vacuum chamber (4) located above the furnace body (2); the bottom of the vacuum chamber (4) is provided with a plurality of connecting pipes (5) arranged vertically downward and connected to the vacuum chamber (4) and used for connecting to the glass outer sleeve (6); the vacuum chamber (4) is also connected to a connecting pipe (5) arranged in the control box (3) and used for passing through the vacuum chamber A vacuum pump is used to evacuate the glass outer sleeve (6) through the furnace body (4) and the connecting pipe (5); a workstation hole (23) is provided on the top of the furnace body (2) at a position corresponding to each connecting pipe (5) and connected to the heating chamber in the furnace body (2) and used for the glass outer sleeve (6) to pass into and out of the furnace body (2) driven by the support frame (12) to achieve heating and cooling of the glass outer sleeve (6); and an output end of the control panel (8) is respectively connected to the vacuum pump and the controlled end of the furnace body (2).

2. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The inner wall of the furnace body (2) is provided with an insulation layer (21) for enclosing a heating chamber and achieving heat preservation; through holes communicating with the working hole (23) and for passing the glass outer sleeve (6) are respectively longitudinally opened at positions opposite to the working hole (23) on the top insulation layer (21); a heating wire (22) for heating the heating chamber to achieve heating of the glass outer sleeve (6) is provided on the bottom insulation layer (21); a temperature sensor for monitoring the temperature in the heating chamber is also provided on the insulation layer (21); the input end of the control panel (8) is connected to the output end of the temperature sensor, and the output end of the control panel (8) is connected to the controlled end of the heating wire (22).

3. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The inner wall of the workstation hole (23) is covered with a sealing sleeve (24) for contacting the outer wall of the glass outer sleeve (6) to achieve sealing, and a plug for sealing the workstation hole (23) is detachably provided on the sealing sleeve (24).

4. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The connecting tube (5) comprises a plurality of single tubes which are sealed and connected by flanges so as to adjust the length to adapt to glass outer sleeves (6) of different lengths. The bottom of the connecting tube (5) is sealed and plugged with the glass outer sleeve (6) and is provided with a lock for locking the glass outer sleeve (6). The bottom of the connecting tube (5) is also detachably provided with an end cap for sealing the connecting tube (5).

5. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: A mold is arranged in the glass outer sleeve (6), and a push rod is arranged in the connecting tube (5) for cooperating with the glass outer sleeve (6) to press the mold tightly and realize the coaxial positioning of the mold and the glass outer sleeve (6).

6. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The control box (3) is provided with a motor (10), the controlled end of the motor (10) is connected to the output end of the control panel (8), the motor (10) is connected to two screw rods (11) which are arranged in parallel and respectively arranged longitudinally and rotationally on the inner side of the right box plate of the control box (3) through a transmission assembly, and the two screw rods (11) are respectively connected to the left ends of the support frame (12) through screw rod nuts; the right box plate of the control box (3) is provided with a slideway (31) which is slidably matched with the support frame (12) and is used to avoid the support frame (12) during the lifting process of the support frame (12).

7. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The vacuum cavity (4) is connected to a vacuum port (41), which is connected to a vacuum pump via a vacuum pipe, and a vacuum solenoid valve (11) is provided on the vacuum pipe for controlling the on and off of the vacuum pipe; the control box (3) is provided with an analog vacuum pressure gauge (9) connected to the vacuum pipe and used for measuring the vacuum degree; the input end of the control panel (8) is connected to the output end of the analog vacuum pressure gauge (9), and the output end of the control panel (8) is connected to the controlled end of the vacuum solenoid valve (11).

8. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: A plurality of cooling fans (7) are arranged on the right box plate of the control box (3) for blowing air to the glass outer casing (6) to accelerate the cooling of the glass outer casing (6); the air inlet of the cooling fan (7) is connected to an air inlet duct, a filter plate for dust removal is arranged in the air inlet duct, and an air inlet solenoid valve for controlling the opening and closing of the air inlet duct is also arranged on the air inlet duct; the output end of the control panel (8) is respectively connected to the cooling fan (7) and the controlled end of the air inlet solenoid valve.

9. The vacuum heating furnace for producing integrally formed glass according to claim 1, characterized in that: The bottom of the furnace frame (1) is provided with a Formosa wheel (13) for fixing and moving the vacuum heating furnace.

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