Annealing device for glass bottle production

Abstract

The invention discloses an annealing device for glass bottle production, and particularly relates to the field of annealing furnaces, the annealing device comprises an annealing furnace and a conveying mesh belt for conveying glass bottles in the annealing furnace, a heating section is sequentially arranged in the annealing furnace, and a movable clamping head is arranged in the heating section of the annealing furnace; the conveying mesh belt is provided with a clamping head and a track plate and a middle plate which are matched with the clamping head to clamp or release glass bottles, opening and closing of the clamping head move along with a gap between the track plate and the middle plate, an auxiliary plate and a heat preservation section which are used for controlling the clamping head to ascend or descend are further arranged at the top of the track plate, and the annealing temperature is kept; the clamping heads can clamp the bottle necks of the glass bottles in cooperation with the gap between the track plate and the middle plate, the auxiliary plate is arranged above the track plate, the clamping heads can carry the glass bottles to ascend, the bottoms of the glass bottles are separated from the conveying mesh belt, and compared with existing equipment, uniform heating of the glass bottles in the annealing furnace can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of annealing furnaces, and more particularly, to an annealing device for glass bottle production. Background Art

[0002] Internal stresses are generated in glass bottles during the forming or hot working process, and these internal stresses can cause the glass bottles to easily break during use. Annealing treatment can release these internal stresses, thereby preventing the glass bottles from exploding during use.

[0003] Existing mesh belt annealing furnaces can effectively complete stress release during the annealing of conventional glass bottles. However, for glass bottle products with a relatively thick bottle body and a relatively large bottle diameter, the annealing qualification rate will significantly decrease. This phenomenon is mainly due to the following factors:

[0004] The contact area between large-sized glass bottles and the conveying mesh belt significantly increases. When the bottle diameter exceeds 150 mm and the wall thickness is greater than 5 mm, the contact area between the glass bottle and the mesh belt may reach 2 - 3 times that of ordinary bottle types. This large contact area will cause two main problems: one is that the heat dissipation rate at the contact part is significantly faster than that in the non-contact area, resulting in uneven temperature distribution of the bottle body; the other is that the difference in the thermal expansion coefficients between the metal material of the mesh belt and the glass will generate additional mechanical stress at the contact surface. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an annealing device for glass bottle production. By setting the clamping head in cooperation with the track plate, the intermediate plate and the auxiliary plate structure, the clamping head can carry the glass bottle and rise. During this process, the clamping head synchronously moves with the conveying mesh belt to ensure that the bottom of the glass bottle can be separated from the conveying mesh belt, so as to realize more uniform heating of the glass bottle during annealing, and solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An annealing device for glass bottle production, comprising an annealing furnace and a conveying mesh belt for conveying glass bottles in the annealing furnace. The following are sequentially arranged in the annealing furnace:

[0008] A heating section, in which a movable clamping head, a track plate and an intermediate plate for clamping or releasing the glass bottle in cooperation with the clamping head are provided. The opening and closing of the clamping head move with the gap between the track plate and the intermediate plate;

[0009] An auxiliary plate for controlling the rising or falling of the clamping head is further provided on the top of the track plate;

[0010] A heat preservation section for maintaining the annealing temperature;

[0011] as well as a slow cooling section and a fast cooling section for cooling the glass bottle;

[0012] A combustion chamber is provided in the heating section of the annealing furnace.

[0013] In a preferred embodiment, a preheating section for preheating the glass bottle is further provided before the annealing furnace enters the heating section.

[0014] In a preferred embodiment, a heat supply chamber I is provided inside the preheating section and the heat preservation section of the annealing furnace. The heat supply chamber I is arranged on both sides of the preheating section and the heat preservation section of the annealing furnace. One end of the heat supply chamber I is connected to the arc-shaped edges at both ends of the track plate. A plurality of heat supply holes are provided on the heat supply chamber I for supplying heat to the annealing furnace.

[0015] In a preferred embodiment, a heat supply port is provided at the arc-shaped edge of the track plate, and the internal temperature of the heating section is input into the heat supply chamber I through the heat supply port.

[0016] In a preferred embodiment, a valve is provided inside the arc-shaped edge of the track plate. The valve is rotatably arranged inside the arc-shaped edge of the track plate. A shaft is provided on the valve, and the shaft movably passes through the side of the preheating section of the annealing furnace and is controlled to rotate by a driving device outside the annealing furnace.

[0017] In a preferred embodiment, a conveying bin is provided inside the heating section of the annealing furnace. Both ends and the bottom of the conveying bin are of an open structure, and a conveying chain is provided inside the conveying bin. A plurality of clamping heads are arranged on the conveying chain, and the clamping heads move along with the conveying chain.

[0018] In a preferred embodiment, a connecting shaft is provided on the surface of the conveying chain, and a sleeve rod is sleeved at the end of the connecting shaft. The sleeve rod is movably assembled up and down with the connecting shaft, and a circular limiting plate is provided at the top of the sleeve rod;

[0019] A cross frame is provided at the bottom of the sleeve rod, and clamping arms are arranged at both ends of the cross frame through shafts. The clamping heads are arranged at the ends of the clamping arms.

[0020] In a preferred embodiment, the side surface of the clamping head is of an arc structure, and the middle of the clamping head is of a hollow structure.

[0021] In a preferred embodiment, the middle plate is arranged at the middle gap between the two track plates. Both ends of the track plate and the middle plate are provided with upward-rolled arc ends, and gaps through which the clamping arms can pass are provided between the middle plate and the track plates on both sides;

[0022] The gap between the middle plate and the two ends of the track plate is arranged in a "V" shape.

[0023] In a preferred embodiment, the auxiliary plate is disposed on the top surface of the track plate, and a gap through which the sleeve rod can pass is provided between the two auxiliary plates;

[0024] Both ends of the auxiliary plate are inclined and connected to the track plate;

[0025] A diverter plate is further provided at the arc end of the intermediate plate, and is fixedly installed inside the annealing furnace through a connecting plate on the top surface of the diverter plate.

[0026] Technical effects and advantages of the present invention:

[0027] 1. When the conveyor net belt conveys glass bottles, the clamping heads can move synchronously, and in cooperation with the gap between the track plate and the intermediate plate, the clamping heads can clamp the bottlenecks of the glass bottles. By providing the auxiliary plate above the track plate, the clamping heads can carry the glass bottles upward, so that the bottoms thereof are separated from the conveyor net belt. Compared with the existing equipment, this can improve the uniform heating of the glass bottles in the annealing furnace.

[0028] At the same time, the clamping heads can achieve automatic clamping and automatic discharging during the movement through the track plate, the intermediate plate and the auxiliary plate, realizing the simplification and effectiveness of the equipment.

[0029] 2. Compared with the existing annealing equipment, the annealing furnace of the present invention also utilizes the internal temperature of the heating section, guides and inputs the internal temperature of the heating section to the preheating section and the heat preservation section to achieve the purpose of energy saving. The preheating section is used to gradually heat the glass bottles from room temperature to near the annealing temperature, avoiding the breakage of the glass bottles due to excessive stress caused by sudden temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the annealing furnace of the present invention.

[0031] Figure 2 It is a schematic diagram of the internal structures of the preheating section, the heating section and the heat preservation section of the annealing furnace of the present invention.

[0032] Figure 3 It is a schematic diagram of the structure of the heating section of the annealing furnace of the present invention.

[0033] Figure 4 It is a schematic diagram of the assembly structure of the track plate and the intermediate plate of the annealing furnace of the present invention.

[0034] Figure 5 It is a schematic diagram of the assembly structure of the track plate and the intermediate plate of the annealing furnace of the present invention.

[0035] Figure 6 It is a schematic diagram of the assembly structure of the track plate and the intermediate plate of the annealing furnace of the present invention.

[0036] Figure 7 It is a schematic diagram of the assembly structure of the track plate and the intermediate plate of the annealing furnace of the present invention.

[0037] Figure 8 This is a schematic diagram of the overall structure of the clamping head of the annealing furnace of the present invention.

[0038] Figure 9 This is a schematic diagram of the position of the heating chamber of the annealing furnace of the present invention.

[0039] Figure 10 This is a schematic diagram of the moving position of the clamping head of the annealing furnace of the present invention.

[0040] Figure 11 This is a schematic diagram of the position of the triangular plate of the present invention.

[0041] The reference numerals are: 1, preheating section; 101, heating chamber 1; 102, heating chamber 2; 2, heating section; 201, conveying bin; 202, combustion chamber; 203, track plate; 204, intermediate plate; 205, heating port; 206, valve; 207, opening section; 208, auxiliary plate; 209, conveying chain; 210, tightening section; 211, discharging section; 212, lifting section; 213, dividing plate; 214, connecting plate; 3, heat preservation section; 4, slow cooling section; 5, rapid cooling section; 6, conveying mesh belt; 7, clamping arm; 701, connecting shaft; 702, clamping head; 703, limiting plate; 704, sleeve rod; 705, cross frame. Detailed implementation manners

[0042] 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.

[0043] As shown in Figure 1 to Figure 11 shown, an annealing device for glass bottle production includes, in sequence:

[0044] A preheating section 1 for gradually heating the glass bottle from room temperature to near the annealing temperature to avoid cracking of the glass bottle due to excessive stress caused by a sudden temperature rise;

[0045] A heating section 2 for continuously heating the glass bottle to the annealing temperature (450 - 550 degrees) to release the internal stress of the glass bottle;

[0046] A heat preservation section 3 for maintaining for a period of time at the annealing temperature according to the glass thickness to make the internal and external temperatures of the glass bottle uniform and completely eliminate the internal stress of the glass bottle;

[0047] A slow cooling section 4 for slowly cooling the glass bottle from the annealing temperature to the strain point to avoid generating new stress due to rapid cooling;

[0048] The rapid cooling section 5 accelerates the cooling rate below the strain point until the glass bottle reaches room temperature.

[0049] To solve the problem that in a mesh belt type glass bottle annealing furnace, when annealing and conveying glass bottles, the bottom of the glass bottle contacts the conveying mesh belt 6, resulting in uneven temperature during subsequent annealing of the glass bottle. Although preheating has been adopted in the annealing furnace, it still has poor effect on glass bottles with thicker walls and larger diameters.

[0050] Therefore, at least one clamping head 702 is provided in the heating section 2 of the annealing furnace. Through this clamping head 702, when the glass bottle is conveyed into the heating section 2 by the conveying mesh belt 6, the clamping head 702 can carry the glass bottle upward and can move synchronously with the conveying mesh belt 6. The clamping head 702 clamps the bottleneck at the top of the glass bottle, so that the bottom of the glass bottle is separated from the conveying mesh belt 6, achieving uniform heating during the annealing process of the glass bottle and being able to more thoroughly eliminate the internal stress of the glass bottle.

[0051] As Figures 2 to 11 shown, to achieve the above-mentioned clamping head 702 carrying the glass bottle upward, a conveying bin 201 is arranged inside the heating section 2 of the annealing furnace. Both ends and the bottom of the conveying bin 201 are of an open structure, and a conveying chain 209 is arranged in the conveying bin 201. A plurality of clamping heads 702 are arranged on the conveying chain 209, and the clamping heads 702 can rotate following the conveying chain 209. During operation, the rotation speed of the conveying chain 209 can be set to move synchronously with the conveying mesh belt 6.

[0052] As Figure 8 、 Figure 11 shown, a connecting shaft 701 is arranged on the surface of the conveying chain 209, and a sleeve rod 704 is sleeved at the end of the connecting shaft 701. The sleeve rod 704 is vertically movably assembled with the connecting shaft 701, and a circular limiting plate 703 is arranged at the top of the sleeve rod 704.

[0053] A cross frame 705 is arranged at the bottom of the sleeve rod 704, and clamping arms 7 are arranged at both ends of the cross frame 705 through shafts. The clamping head 702 is arranged at the end of the clamping arm 7.

[0054] In the present invention, the side surface of the clamping head 702 is set as an arc structure adapted to the glass bottle. The arc parts of the two clamping heads 702 can clamp the bottleneck of the glass bottle. At the same time, the middle of the clamping head 702 is hollow, which can further reduce the influence on the heating of the glass bottle when the clamping head 702 clamps the glass bottle.

[0055] Two track plates 203 are arranged inside the heating section 2 of the annealing furnace, and an intermediate plate 204 is arranged in the gap between the two track plates 203. Both ends of the track plate 203 and the intermediate plate 204 are provided with upwardly rolled arc ends, and gaps are arranged between the intermediate plate 204 and the track plates 203 on both sides. The gaps are used for the conveying chain to allow the clamping arm 7 to pass through the gaps when driving the clamping head 702 to move.

[0056] To ensure that the two clamping heads 702 can approach each other and clamp the glass bottle, the gap between the middle plate 204 and the two ends of the track plate 203 is set in a "V" shape, which is an opening section 207, and the gap between the bottom of the middle plate 204 and the track plate 203 is parallel to each other, which is a tightening section 210. That is, when the clamping arm 7 passes through the gap at both ends of the middle plate 204, the clamping arm 7 will be in an open state. When the clamping arm 7 moves in the flat stage of the bottom of the middle plate 204, the clamping arm 7 will approach each other and clamp the glass bottle through the clamping head 702.

[0057] In order to ensure that the clamping head 702 can carry the glass bottle upward after clamping it, so that the bottom of the glass bottle can be separated from the contact of the conveyor belt 6, an auxiliary plate 208 is set on the top surface of the two track plates 203. The auxiliary plate 208 is parallel to the track plate 203 in up and down direction. A gap is also set between the two auxiliary plates 208, and the gap is used for the sleeve rod 704 to pass through.

[0058] Both ends of the auxiliary plate 208 are connected to the track plate 203 at an angle, and the inclined connection points at the two ends are a material lifting section 212 and a material discharging section 211 respectively.

[0059] A combustion chamber 202 is arranged inside the heating section 2 of the annealing furnace and below the track plate 203 to provide annealing temperature.

[0060] During operation, the conveying chain 209 drives the clamping head 702 to move. When the clamping head 702 passes through the opening section 207, the clamping arm 7 is in an open state when passing through the gap between the middle plate 204 and the track plate 203. The clamping arms 7 gradually approach each other during the movement and complete the clamping of the glass bottle. When the clamping arms 7 continue to move, the sleeve rod 704 will enter the gap between the two auxiliary plates 208. When entering, the limit plate 703 on the sleeve rod 704 will rise with the lifting section 212 at one end of the auxiliary plate 208, and the glass bottle will rise as a whole through the clamping arm 7 and the clamping head 702, and break away from the contact with the conveyor mesh belt 6. In this state, the glass bottle is heated more evenly.

[0061] When the glass bottle is transported to the other end by the conveyor chain 209 after annealing, the upper limit plate 703 on the sleeve rod 704 descends along with the discharge section 211, and the two synchronous clamping arms 7 gradually open to place the glass bottle stably on the conveyor mesh belt 6, thus completing the annealing process of the glass bottle.

[0062] In order to ensure that the two clamping arms 7 are in an open state before entering the clamping process, a diverter plate 213 is also provided at the arc end of the intermediate plate 204, and the top surface of the diverter plate 213 is fixedly installed inside the annealing furnace through a connecting plate 214. The assembly of the intermediate plate 204 can be further ensured through the diverter plate 213 and the connecting plate 214.

[0063] The diverter plate 213 is triangular. When the clamping head 702 moves, one corner of the diverter plate 213 diverts the clamping arms 7 to both sides, ensuring that the clamping arms 7 can enter the gap between the intermediate plate 204 and the track plate 203.

[0064] In the present invention, the conveying chain 209 can be driven by a motor in cooperation with a high-temperature resistant conveyor belt or chain.

[0065] Since upward arc-shaped flanges are provided at both ends of the track plate 203 and the intermediate plate 204, part of the annealing temperature in the heating section 2 will accumulate inside the track plate 203 and the intermediate plate 204. In the present invention, the annealing furnace also utilizes this part of the temperature to achieve energy-saving and efficient annealing work.

[0066] Inside the preheating section 1 and the heat preservation section 3 of the annealing furnace, a first heat supply chamber 101 is provided along the length direction. In the present invention, two first heat supply chambers 101 are provided and are arranged on both sides of the preheating section 1 and the heat preservation section 3 of the annealing furnace. One end of the first heat supply chamber 101 is connected to the arc-shaped flanges at both ends of the track plate 203, and a plurality of heat supply holes are opened on the first heat supply chamber 101 for supplying heat to the annealing furnace.

[0067] A heat supply port 205 is opened at the arc-shaped flange of the track plate 203. The temperature inside the heating section 2 is input into the first heat supply chamber 101 through the heat supply port 205. At the same time, a valve 206 is arranged inside the arc-shaped flange of the track plate 203. The valve 206 is arranged in an arc structure identical to the arc-shaped flange and is rotatably arranged inside the arc-shaped flange of the track plate 203. A shaft is provided on the valve 206. The shaft movably passes through the side of the preheating section 1 of the annealing furnace and is driven outside the annealing furnace, such as by a motor. By rotating the shaft, the rotation of the valve 206 is controlled to realize controlling the opening size of the heat supply port 205 and controlling the heat input.

[0068] In the present invention during operation, the heat inside the heating section 2 is also forcibly introduced into the preheating section 1 and the heat preservation section 3 through a blower (not shown in the figure) to realize the reuse of the heat in the heating section 2 and achieve the purpose of energy saving.

[0069] In the present invention, a second heat supply chamber 102 is also provided in the preheating section 1 and the heat preservation section 3 of the annealing furnace. The second heat supply chamber 102 is an active heating chamber, and ignition equipment is arranged inside it. When the temperature inside the preheating section 1 and the heat preservation section 3 is insufficient, it actively realizes heating.

[0070] After the glass bottle passes through the heat preservation section 3 of the annealing furnace, it is continuously conveyed to the slow cooling section 4 and slowly cooled to the strain point to avoid generating new stresses due to rapid cooling.

[0071] After being cooled in the slow cooling section 4, it is continuously conveyed to the rapid cooling section 5 and forced to cool to room temperature by means of a fan to complete all annealing work.

[0072] In the present invention, the temperature reduction work of the slow cooling section 4 and the rapid cooling section 5 can refer to the prior art and is not an improved technical solution of the present invention.

[0073] In the present invention, only one set of clamping devices for clamping glass bottles is provided. As another embodiment of the present invention, multiple sets of its track plates, intermediate plates, and clamping heads can be arranged along the direction of the conveyor belt to enable synchronous annealing work for multiple rows of glass bottles.

[0074] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or the internal connection of two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0075] Second: In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0076] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An annealing device for glass bottle production, comprising an annealing furnace and a conveyor belt (6) for conveying glass bottles in the annealing furnace, characterized in that: The annealing furnace is provided with: A heating section (2), wherein a movable clamping head (702) is provided in the heating section (2) of the annealing furnace, and the clamping head (702) can clamp or release the glass bottle track plate (203) and the middle plate (204), and the opening and closing of the clamping head (702) moves along with the gap between the track plate (203) and the middle plate (204); An auxiliary plate (208) is also provided on the top of the track plate (203) for controlling the rise or fall of the clamping head (702); A heat preservation section (3) for maintaining the annealing temperature; and a slow cooling section (4) and a fast cooling section (5) for cooling the glass bottles; A combustion chamber (202) is provided in the heating section (2) of the annealing furnace.

2. The annealing device for glass bottle production according to claim 1, characterized in that: The annealing furnace is also provided with a preheating section (1) for preheating the glass bottles before entering the heating section (2).

3. An annealing device for glass bottle production according to claim 2, characterized in that: A heating chamber 1 (101) is arranged inside the preheating section (1) and the heat preservation section (3) of the annealing furnace. The heating chamber 1 (101) is arranged on both sides of the preheating section (1) and the heat preservation section (3) of the annealing furnace. One end of the heating chamber 1 (101) is connected to the arc-shaped curling edges at both ends of the track plate (203). A plurality of heating holes are opened on the heating chamber 1 (101) for supplying heat to the annealing furnace.

4. The annealing device for glass bottle production according to claim 3, characterized in that: A heat supply port (205) is provided at the arc-shaped curled edge of the track plate (203), and the internal temperature of the heating section (2) is input into the heating chamber 1 (101) through the heat supply port (205).

5. The annealing device for glass bottle production according to claim 4, characterized in that: A valve (206) is arranged inside the arc-shaped curling edge of the track plate (203). The valve (206) is rotatably arranged inside the arc-shaped curling edge of the track plate (203). A shaft is arranged on the valve (206). The shaft moves through the side of the preheating section (1) of the annealing furnace, and the rotation of the valve (206) is controlled by a driving device outside the annealing furnace.

6. An annealing device for glass bottle production according to any one of claims 1 to 5, characterized in that: A conveying bin (201) is arranged inside the heating section (2) of the annealing furnace. The two ends and the bottom of the conveying bin (201) are open structures. A conveying chain (209) is arranged inside the conveying bin (201). A plurality of clamping heads (702) are arranged on the conveying chain (209). The clamping heads (702) move along with the conveying chain (209).

7. An annealing device for glass bottle production according to claim 6, characterized in that: A connecting shaft (701) is arranged on the surface of the conveying chain (209), and a sleeve rod (704) is sleeved on the end of the connecting shaft (701), the sleeve rod (704) is movably assembled on the connecting shaft (701) up and down, and a circular limiting plate (703) is arranged on the top of the sleeve rod (704); A cross frame (705) is arranged at the bottom of the sleeve rod (704), and clamping arms (7) are arranged at both ends of the cross frame (705) through axes, and the clamping head (702) is arranged at the end of the clamping arm (7).

8. An annealing device for glass bottle production according to claim 7, characterized in that: The side surface of the clamping head (702) is configured as an arc structure, and the middle of the clamping head (702) is a hollow structure.

9. An annealing device for glass bottle production according to claim 1 or 8, characterized in that: The middle plate (204) is arranged at the gap between the two track plates (203), and both ends of the track plate (203) and the middle plate (204) are provided with arc ends rolled up upwards, and gaps through which the clamping arms (7) can pass are provided between the middle plate (204) and the track plates (203) on both sides; The gaps at both ends of the middle plate (204) and the track plate (203) are arranged in a "V" shape.

10. An annealing device for glass bottle production according to claim 9, characterized in that: The auxiliary plate (208) is arranged on the top surface of the track plate (203), and a gap is provided between the two auxiliary plates (208) through which the sleeve rod (704) can pass; The two ends of the auxiliary plate (208) are connected to the track plate (203) at an angle; A distribution plate (213) is also provided at the arc end of the middle plate (204), and is fixedly mounted inside the annealing furnace via a connecting plate (214) on the top surface of the distribution plate (213).

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