Glass tube temperature control device

Abstract

The utility model discloses a glass tube temperature control device, which belongs to the technical field of glass tube production and comprises a support frame, a graphite wheel set is connected onto the support frame and conveys formed glass tubes, and a plurality of cover components are arranged on the support frame along the conveying direction of the glass tubes. The cover assemblies are connected with or separated from the supporting frame according to different environment temperatures, and the separation degree of the cover assemblies can be controlled in sections according to the environment temperatures. The cover assembly can be dynamically connected with or separated from the supporting frame according to the environment temperature, the heat preservation or heat dissipation function is achieved, changes of the environment temperature are flexibly responded, thermal stress, cracks or deformation caused by shock cooling and shock heating of the glass tube is avoided, the temperature of the cover assembly can be adjusted in sections, overall heat preservation can be achieved, heat dissipation can be achieved through gaps, and the service life of the glass tube is prolonged. And the pertinence and efficiency of temperature control are obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of glass tube production technology, and in particular relates to a glass tube temperature control device. Background Technology

[0002] Temperature control is crucial for ensuring product quality, forming accuracy, and process stability during glass tube production. After forming in a muffle furnace, glass tubes typically need to be conveyed via a transport device (such as a graphite wheel assembly) to proceed to subsequent cutting, annealing, or processing steps. However, temperature management during the glass tube conveying process faces the following technical challenges.

[0003] In cold environments (such as winter or low-temperature workshops), the glass tube surface dissipates heat too quickly, leading to an increased temperature difference between the inside and outside, which may generate new thermal stress or even cause cracks.

[0004] In high-temperature environments (such as summer or near heat sources), insufficient cooling of the glass tube may cause it to stick to or deform with the graphite wheel, affecting geometric accuracy.

[0005] In existing technologies, a single insulation cover or open conveyor is usually used, which cannot adapt to changes in ambient temperature, resulting in uneven cooling of the glass tube. Forced cooling is also used through fans, but it lacks insulation function and the glass tube is prone to cracking in low-temperature environments.

[0006] Therefore, there is an urgent need to design a glass tube temperature control device to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a glass tube temperature control device that has the advantage of dynamically adjusting heat preservation and cooling functions, and solves the technical problem of uneven cooling of glass tubes under different ambient temperatures.

[0008] To achieve the above objectives, the specific technical solution of the glass tube temperature control device of this utility model is as follows:

[0009] A glass tube temperature control device includes a support frame with a graphite wheel assembly connected to the support frame. The graphite wheel assembly transports the formed glass tube. Multiple cover assemblies are provided on the support frame along the glass tube transport direction. The cover assemblies are connected to or separated from the support frame according to different ambient temperatures, and the degree of separation of the multiple cover assemblies can be controlled in sections according to the ambient temperature.

[0010] Furthermore, multiple cover components are provided with a first state, a second state, and a third state;

[0011] When the multiple cover assemblies are in the first state, the multiple cover assemblies are connected to the support frame, and the multiple cover assemblies and the support frame are combined to form an insulation cavity for insulating the glass tube;

[0012] When the multiple cover assemblies are in the second state, the multiple cover assemblies are separated from the support frame, and the glass tube is cooled through the gap between the multiple cover assemblies and the support frame;

[0013] When multiple cover assemblies are in the third state, the multiple cover assemblies separate from the support frame in sequence, and the degree of separation between the multiple cover assemblies and the support frame increases sequentially along the glass tube conveying direction.

[0014] Furthermore, the cover assembly includes a first cover plate and two second cover plates, with both ends of the first cover plate hinged to the second cover plates via pins;

[0015] When multiple cover components are in the first state, the end of the second cover plate away from the first cover plate is connected to the support frame, and the second cover plate, the first cover plate and the support frame form a heat preservation cavity;

[0016] When multiple cover components are in the second state, the first cover plate slides upward, causing the end of the second cover plate away from the first cover plate to separate from the support frame;

[0017] When multiple cover assemblies are in the third state, the upward sliding distance of multiple first cover plates increases sequentially, causing the degree of separation between multiple second cover plates and the support frame to increase sequentially along the glass tube conveying direction.

[0018] Furthermore, when multiple cover components are in the third state, the second cover plate at the opposite end of the glass tube conveying direction is connected to the support frame, and the remaining second cover plates are separated from the support frame in sequence.

[0019] Furthermore, a hydraulic cylinder is provided on the first cover plate. The output end of the hydraulic cylinder is fixedly connected to the first cover plate, and the fixed end of the hydraulic cylinder is fixedly connected to the top frame. The hydraulic cylinder hydraulically controls the up and down movement of the first cover plate.

[0020] Furthermore, the cover assembly is provided with a connecting component. When multiple cover assemblies are in the second state, the connecting component controls the rotation of each pair of second cover plates relative to the first cover plate in opposite directions. When multiple cover assemblies are in the third state, the rotation angle of the multiple second cover plates relative to the first cover plate increases sequentially.

[0021] Furthermore, the connecting assembly includes a support rod, one end of which is fixedly connected to the top frame. The end of the support rod away from the top frame is hinged to two connecting rods via pins. The two connecting rods abut against two second cover plates respectively. Two control rods are fixedly connected to the first cover plate. Each control rod is hinged to its corresponding connecting rod via a pin. The connecting rods can slide relative to the control rods. When multiple cover assemblies change from the first state to the second state, the first cover plate moves upward, and the control rods fixedly connected to the first cover plate slide upward synchronously. The connecting rods rotate in opposite directions around the pins hinged to the support rods, so that the two second cover plates rotate in opposite directions relative to the first cover plate.

[0022] Furthermore, a groove is provided on the connecting rod, and the pin on the control rod is slidably connected to the groove.

[0023] Furthermore, the end of the support rod away from the top frame passes through the first cover plate and extends into the first cover plate, and the end of the support rod extending into the first cover plate is hinged to two connecting rods by a pin.

[0024] Furthermore, the support frame is equipped with a nozzle assembly that can blow air onto the glass tube, and the temperature of the air blown by the nozzle assembly corresponds to the state of the cover assembly.

[0025] The nozzle assembly includes multiple nozzles, with a nozzle located between every two adjacent graphite wheels.

[0026] The present invention has the following advantages: the cover assembly can be dynamically connected or separated from the support frame according to the ambient temperature to achieve the functions of heat preservation or heat dissipation, flexibly respond to changes in ambient temperature, and avoid the glass tube from thermal stress, cracks or deformation caused by sudden cooling and heating. Moreover, the cover assembly can adjust the temperature in sections, which can both keep the whole body warm and dissipate heat through the gaps, significantly improving the pertinence and efficiency of temperature control. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the temperature control device of this utility model in its first state. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the temperature control device of this utility model in its first state. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the temperature control device of this utility model in the second state. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the temperature control device of this utility model in the second state. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the temperature control device of this utility model in the third state. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the temperature control device of this utility model in the third state. Figure 2 ;

[0033] Figure 7 This is a schematic diagram of the structure of the connecting component of this utility model;

[0034] The markings in the diagram are as follows: 1. Support frame; 2. Cover assembly; 21. First cover plate; 22. Second cover plate; 3. Hydraulic cylinder; 4. Glass tube; 5. Connecting assembly; 51. Support rod; 52. Connecting rod; 53. Control rod; 54. Slide groove; 6. Nozzle assembly; 7. Graphite wheel assembly. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0037] The following is a reference to the appendix. Figure 1 To be continued Figure 7 This invention describes a glass tube temperature control device.

[0038] In existing technologies, a single insulation cover or open conveyor is usually used, which cannot adapt to changes in ambient temperature, resulting in uneven cooling of the glass tube. Forced cooling is also used through fans, but it lacks insulation function and the glass tube is prone to cracking in low-temperature environments.

[0039] Therefore, this glass tube temperature control device includes a support frame 1, on which a graphite wheel assembly 7 is connected. The graphite wheel assembly 7 transports the formed glass tube 4. The support frame 1 is provided with multiple cover assemblies 2. The cover assemblies 2 can be connected to or separated from the support frame 1. The multiple cover assemblies 2 are provided with a first state, a second state and a third state.

[0040] When the outside temperature is low, the multiple cover components 2 are in the first state. The multiple cover components 2 are connected to the support frame 1. The multiple cover components 2 and the support frame 1 are combined to form an insulation cavity for insulating the glass tube 4, which avoids the glass tube 4 surface from dissipating heat too quickly, which would increase the temperature difference between the inside and outside, potentially generating new thermal stress or even causing cracks.

[0041] When the outside temperature is high, the multiple cover components 2 are in the second state, and the multiple cover components 2 are separated from the support frame 1. The glass tube 4 is cooled through the gap between the multiple cover components 2 and the support frame 1, which avoids insufficient cooling of the glass tube 4, which would cause it to stick to or deform with the graphite wheel and affect the geometric accuracy.

[0042] In low-temperature environments (such as 5℃), the insulation cavity can reduce the heat dissipation rate (cooling rate ≤1℃ / min) and prevent cracks;

[0043] When multiple cover components 2 are in the second state, the separation distance between multiple cover components 2 and support frame 1 can be adjusted by the external temperature. For example, the higher the external temperature, the greater the separation between multiple cover components 2 and support frame 1. For example, the lower the external temperature, the smaller the separation between multiple cover components 2 and support frame 1. It can even be directly in the first state.

[0044] In high-temperature environments (such as 35℃), increase the gap of the cover assembly 2 (separation distance 10-30mm) and cooperate with the nozzle assembly 6 to blow cold air (20-25℃) to achieve efficient cooling (cooling rate 3-5℃ / min).

[0045] When multiple cover assemblies 2 are in the third state, multiple cover assemblies 2 are separated from the support frame 1 in sequence. The degree of separation between multiple cover assemblies 2 and the support frame 1 increases sequentially along the glass tube conveying direction A, thereby achieving gradient temperature regulation and ensuring the gradual cooling of the glass tube 4 in the conveying direction.

[0046] In the third state, the separation degree of the cover assembly 2 along the glass tube 4 conveying direction A increases sequentially (e.g., from 0 mm to 50 mm), forming a temperature gradient (e.g., 600℃→450℃→300℃), which meets the "slow cooling" requirement of glass annealing, and the residual stress can be reduced to <5MPa (traditional method>15MPa).

[0047] Preferably, the cover assembly 2 includes a first cover plate 21 and two second cover plates 22, with the two ends of the first cover plate 21 hinged to the second cover plates 22 by pins;

[0048] When the multiple cover components 2 are in the first state, the end of the second cover plate 22 away from the first cover plate 21 is connected to the support frame 1, and the second cover plate 22, the first cover plate 21 and the support frame 1 form a heat preservation cavity.

[0049] When the multiple cover components 2 are in the second state, the first cover plate 21 slides upward C, causing the end of the second cover plate 22 away from the first cover plate 21 to separate from the support frame 1;

[0050] When multiple cover assemblies 2 are in the third state, the sliding distance of multiple first cover plates 21 upward C increases sequentially, so that the separation degree between multiple second cover plates 22 and support frame 1 increases sequentially along the conveying direction A of glass tube.

[0051] By using the first cover plate 21 and the second cover plate 22, the cover assembly 2 can be separated in a limited space, and the coverage area can reach 80% of the circumference of the glass tube 4, compared to only 50% for a traditional fixed cover, thus improving the separation efficiency.

[0052] Preferably, when the multiple cover assemblies 2 are in the third state, the second cover plate 22 at the B end of the glass tube in the opposite direction of transport is connected to the support frame 1, and the remaining second cover plates 22 are separated from the support frame 1 in sequence, and the degree of separation between the remaining second cover plates 22 and the support frame 1 increases sequentially along the transport direction A of the glass tube.

[0053] Preferably, a hydraulic cylinder 3 is provided on the first cover plate 21, the output end of the hydraulic cylinder 3 is fixedly connected to the first cover plate 21, and the fixed end of the hydraulic cylinder 3 is fixedly connected to the top frame. In other embodiments of this utility model, other power sources, such as electric push rods, can also be used.

[0054] The top frame is not shown in the figure. The top frame is connected to the support frame 1 and is used to fix the hydraulic cylinder 3.

[0055] Preferably, when the multiple cover components 2 are in the third state, the degree of sequential separation of the multiple cover components 2 is determined by the external temperature.

[0056] Temperature sensors can be installed in the workshop to detect the workshop temperature. The temperature sensors then transmit the temperature information to the controller, which adjusts the degree of sequential separation of multiple cover components 2 according to the temperature.

[0057] Furthermore, the cover assembly 2 is provided with a connecting assembly 5. When multiple cover assemblies 2 are in the second state, through the connecting assembly 5, every two second cover plates 22 rotate away from the first cover plate 21. When multiple cover assemblies 2 are in the third state, the rotation angle of multiple second cover plates 22 relative to the first cover plate 21 increases sequentially. Specifically, the connecting assembly 5 includes a support rod 51. One end of the support rod 51 is fixedly connected to the top frame. The end of the support rod 51 away from the top frame is hinged to two connecting rods 52 by a pin. The two connecting rods 52 abut against the two second cover plates 22 respectively. Two control rods 53 are fixedly connected to the first cover plate 21. Each control rod 53 is hinged to the corresponding connecting rod 52 by a pin. The connecting rod 52 can slide relative to the control rod 53. When multiple cover assemblies 2 change from the first state to the second state, the control rod 53 slides upward C, and the connecting rod 52 rotates away from the first cover plate 21 with the pin hinged to the support rod 51 as the center, so that the two second cover plates 22 rotate away from the first cover plate 21.

[0058] When the first cover plate 21 moves upward C, the control rod 53 fixedly connected to the first cover plate 21 moves upward C synchronously, so that the pin of the control rod 53 and the connecting rod 52 slides along the connecting rod 52, thereby the connecting rod 52 rotates upward C with the pin of the supporting rod 51 as the center, and then the second cover plate 22 moves in the opposite direction.

[0059] When the first cover plate 21 moves downward by D, the control rod 53 fixedly connected to the first cover plate 21 moves downward by D in sync. As a result, the pin that is hinged to the connecting rod 52 slides along the connecting rod 52, and the connecting rod 52 rotates downward by D with the pin that is hinged to the support rod 51 as the center, thereby moving the second cover plate 22 towards the opposite side.

[0060] Furthermore, a groove 54 is provided on the connecting rod 52, and the pin on the control rod 53 is slidably connected to the groove 54.

[0061] Furthermore, the end of the support rod 51 away from the top frame passes through the first cover plate 21 and extends into the first cover plate 21. The end of the support rod 51 extending into the first cover plate 21 is hinged to the two connecting rods 52 by a pin.

[0062] The support frame 1 is equipped with a nozzle assembly 6, which can blow air onto the glass tube 4. The temperature of the nozzle assembly 6 is controlled by the degree of separation between the cover assembly 2 and the support frame 1.

[0063] When multiple shroud assemblies 2 are in the first state, the nozzle assembly 6 blows high-temperature gas onto the glass tube 4;

[0064] When in heat preservation mode, blow high-temperature gas (e.g., 80-100℃) to reduce heat loss;

[0065] When multiple shroud assemblies 2 are in the second state, the nozzle assembly 6 blows a lower temperature gas onto the glass tube 4;

[0066] When cooling down, blow room temperature or low temperature gas (such as 15-25℃) as needed;

[0067] When the multiple hood assemblies 2 are in the third state, the temperature of the gas sprayed by the nozzle group 6 is controlled according to the degree of separation between the multiple hood assemblies 2 and the support frame 1.

[0068] During gradient cooling, the gas temperature is linked to the degree of separation of the cover assembly 2 (e.g., a separation of 20mm corresponds to a 30℃ airflow, and a separation of 50mm corresponds to a 15℃ airflow).

[0069] Preferably, the nozzle group 6 includes multiple nozzles, with a nozzle provided between every two adjacent graphite wheels.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A glass tube temperature control device, characterized in that, Includes a support frame (1), on which a graphite wheel assembly (7) is connected. The graphite wheel assembly (7) transports the formed glass tube (4). Multiple cover assemblies (2) are provided on the support frame (1) along the transport direction of the glass tube (4). The multiple cover assemblies (2) are connected to or separated from the support frame (1) according to different ambient temperatures, and the degree of separation of the multiple cover assemblies (2) can be controlled in sections according to the ambient temperature.

2. The glass tube temperature control device according to claim 1, characterized in that, The plurality of the cover components (2) are provided with a first state, a second state and a third state; When the multiple cover assemblies (2) are in the first state, the multiple cover assemblies (2) are connected to the support frame (1), and the multiple cover assemblies (2) and the support frame (1) are combined to form a heat preservation cavity for heat preservation of the glass tube (4); When the multiple cover assemblies (2) are in the second state, the multiple cover assemblies (2) are separated from the support frame (1), and the glass tube (4) is cooled through the gap between the multiple cover assemblies (2) and the support frame (1); When the multiple cover assemblies (2) are in the third state, the multiple cover assemblies (2) are separated from the support frame (1) in sequence, and the degree of separation between the multiple cover assemblies (2) and the support frame (1) increases in sequence along the conveying direction of the glass tube (4).

3. The glass tube temperature control device according to claim 2, characterized in that, The cover assembly (2) includes a first cover plate (21) and two second cover plates (22), with the two ends of the first cover plate (21) hinged to the second cover plates (22) by pins; When the multiple cover components (2) are in the first state, the end of the second cover plate (22) away from the first cover plate (21) is connected to the support frame (1), and the second cover plate (22), the first cover plate (21) and the support frame (1) form a heat preservation cavity; When the multiple cover assemblies (2) are in the second state, the first cover plate (21) slides upward, causing the end of the second cover plate (22) away from the first cover plate (21) to separate from the support frame (1); When the multiple cover assemblies (2) are in the third state, the upward sliding distance of the multiple first cover plates (21) increases sequentially, so that the degree of separation between the multiple second cover plates (22) and the support frame (1) increases sequentially along the conveying direction of the glass tube (4).

4. The glass tube temperature control device according to claim 3, characterized in that, When multiple cover assemblies (2) are in the third state, the second cover plate (22) at the opposite end of the glass tube (4) is connected to the support frame (1), and the remaining second cover plates (22) are separated from the support frame (1) in sequence.

5. The glass tube temperature control device according to claim 3, characterized in that, The first cover plate (21) is provided with a hydraulic cylinder (3). The output end of the hydraulic cylinder (3) is fixedly connected to the first cover plate (21), and the fixed end of the hydraulic cylinder (3) is fixedly connected to the top frame. The hydraulic cylinder (3) hydraulically controls the up and down movement of the first cover plate (21).

6. The glass tube temperature control device according to claim 3, characterized in that, The cover assembly (2) is provided with a connecting assembly (5). When the multiple cover assemblies (2) are in the second state, the connecting assembly (5) controls the two second cover plates (22) to rotate in opposite directions relative to the first cover plate (21). When the multiple cover assemblies (2) are in the third state, the connecting assembly (5) controls the rotation angle of the multiple second cover plates (22) relative to the first cover plate (21) to increase sequentially.

7. The glass tube temperature control device according to claim 6, characterized in that, The connecting assembly (5) includes a support rod (51), one end of which is fixedly connected to the top frame. The end of the support rod (51) away from the top frame is hinged to two connecting rods (52) by a pin. The two connecting rods (52) respectively abut against two second cover plates (22). Two control rods (53) are fixedly connected to the first cover plate (21). Each control rod (53) is hinged to the corresponding connecting rod (52) by a pin. The connecting rod (52) can slide relative to the control rod (53). When multiple cover assemblies (2) change from the first state to the second state, the first cover plate (21) moves upward, and the control rod (35) fixedly connected to the first cover plate (21) slides upward synchronously. The connecting rod (52) rotates in opposite directions with the pin hinged to the support rod (51) as the center, so that the two second cover plates (22) rotate in opposite directions relative to the first cover plate (21).

8. The glass tube temperature control device according to claim 7, characterized in that, The connecting rod (52) has a sliding groove (54), and the pin on the control rod (53) is slidably connected to the sliding groove (54).

9. The glass tube temperature control device according to claim 7, characterized in that, The end of the support rod (51) away from the top frame passes through the first cover plate (21) and extends into the first cover plate (21). The end of the support rod (51) extending into the first cover plate (21) is hinged to two connecting rods (52) by a pin.

10. The glass tube temperature control device according to claim 1, characterized in that, The support frame (1) is provided with a nozzle assembly (6), which can blow air onto the glass tube (4), and the temperature of the air blown by the nozzle assembly (6) corresponds to the state of the cover assembly (2).

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