Vacuum runway for horizontally drawing bearing glass tube

Abstract

The utility model relates to the technical field of vacuum runway equipment, in particular to a vacuum runway for horizontally drawing a bearing glass tube, which comprises a supporting table, a heat preservation cover is arranged on the supporting table, a runway body is fixedly arranged on the supporting table, a plurality of arc-shaped limiting blocks are fixedly arranged on the runway body, and the limiting blocks are arranged on the supporting table. A cavity is formed in the limiting block, a plurality of suction holes communicated with the cavity are formed in the surface of the limiting block, a suction head is fixedly installed on the surface of the limiting block, guide pipes are fixedly installed on the limiting block, one ends of the guide pipes are fixedly communicated with a connecting pipe, and a suction fan is fixedly installed on the heat preservation cover. The suction fan, the connecting pipe, the guide pipe, the limiting block, the suction hole and the suction head are matched with one another, suction force can be generated at the upper end of the glass tube, then the upper end of the glass tube is attached to the limiting block, the situation that the upper end collapses is avoided, it is guaranteed that the shape and the wall thickness of the glass tube are uniform, and the ovality and the production qualification rate of the glass tube are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum runway equipment, in particular to a vacuum runway for horizontally drawing and bearing glass tubes. Background Art

[0002] Glass tube is a kind of glass with sodium oxide (Na2O), boron oxide (B2O3) and silicon dioxide (SiO2) as basic components. It can be widely used in chemical industry, aerospace, military, family, hospital and other fields. It has good promotion value and social benefits. In the production process of glass tube, a vacuum runway device is usually required for the tube drawing step.

[0003] In the traditional vacuum runway device for tube drawing, when the glass tube enters the vacuum runway, the glass tube is still in a soft state. Due to its own weight pressing down, the upper end of the glass tube may collapse. This can easily cause the glass tube in the runway to have uneven shape and uneven wall thickness, affecting the ellipticity of the glass tube and resulting in a low pass rate. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: when the glass tube enters the vacuum runway, the glass tube is still in a soft state and has its own weight pressing downward, and the upper end of the glass tube may collapse, which easily causes the glass tube in the runway to have an uneven shape and uneven wall thickness, affecting the ellipticity of the glass tube and resulting in a low pass rate. A vacuum runway for horizontally drawing and bearing glass tubes is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vacuum runway for horizontally drawing and bearing glass tubes, comprising a support platform, a heat preservation cover is installed on the support platform through multiple sets of locking components, an arc-shaped runway body is fixedly installed on the support platform, and a glass tube is placed on the runway body;

[0007] A plurality of arc-shaped limit blocks are fixedly installed on the runway body, a cavity is provided inside the limit block, a plurality of suction holes connected with the cavity are provided on the surface of the limit block, a suction head is fixedly installed in each of the plurality of suction holes, a conduit connected with the cavity is fixedly installed on the upper ends of the plurality of limit blocks, one end of the plurality of conduits is fixedly connected with a connecting pipe, a suction fan is fixedly installed on the thermal insulation cover, an output end of the suction fan is fixedly connected with the connecting pipe, a plurality of through holes are provided on the surface of the thermal insulation cover, and one end of the conduit passes through the through hole.

[0008] Preferably, a plurality of rolling assemblies are fixedly mounted on the surface of the limit block, and the rolling assemblies are used to reduce the friction between the limit block and the glass tube.

[0009] Preferably, the rolling assembly comprises two support blocks fixedly mounted on the limiting block and a roller rotatably mounted between the two support blocks.

[0010] Preferably, the locking assembly includes a fixed block fixedly mounted on the side of the support platform, an L-shaped plug block fixedly mounted on the side of the insulation cover, and a limiting component arranged on the fixed block for limiting the plug block, a plug hole is opened on the surface of the fixed block, and one end of the plug block is inserted into the plug hole.

[0011] Preferably, a rectangular hole is formed on the insert block, and the limiting component includes two spring rods fixedly mounted on the fixed block and two positioning blocks slidably mounted on one end of the two spring rods, and one end of the two positioning blocks are inserted into the rectangular hole.

[0012] Preferably, anti-skid pads are fixedly installed on the surfaces of the two positioning blocks, and the anti-skid pads are made of rubber.

[0013] In the utility model, the beneficial effects are:

[0014] When the glass tube slides on the vacuum runway, suction can be generated at the upper end of the glass tube through the cooperation of the suction fan, connecting pipe, conduit, limit block, suction hole and suction head, so that the upper end of the glass tube fits with the limit block to avoid collapse of the upper end, ensure the uniform shape and wall thickness of the glass tube, and improve the ellipticity and production qualification rate of the glass tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a vacuum runway for horizontally drawing and carrying glass tubes proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the runway body in a vacuum runway for horizontally drawing and carrying glass tubes proposed by the utility model;

[0017] Figure 3 It is a schematic diagram of a three-dimensional partial cross-sectional structure of a limit block in a vacuum runway for horizontally drawing a bearing glass tube proposed by the utility model;

[0018] Figure 4 for Figure 1 A magnified view of the structure at center;

[0019] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.

[0020] In the figure: 1 support platform, 2 insulation cover, 3 runway body, 4 limit block, 5 suction head, 6 guide tube, 7 connecting pipe, 8 suction fan, 9 support block, 10 roller, 11 fixing block, 12 plug block, 13 spring rod, 14 positioning block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 5 A vacuum runway for horizontally drawing and carrying glass tubes comprises a support platform 1, on which a heat-insulating cover 2 is installed through a plurality of locking components, an arc-shaped runway body 3 is fixedly installed on the support platform 1, on which a glass tube is placed, and when drawing the glass tube, the glass tube slides on the runway body 3 (the glass tube is not shown in the figure).

[0023] A plurality of arc-shaped limit blocks 4 are fixedly installed on the runway body 3, a cavity is opened inside the limit block 4, a plurality of suction holes connected with the cavity are opened on the surface of the limit block 4, a suction head 5 is fixedly installed in the plurality of suction holes, a conduit 6 connected with the cavity is fixedly installed on the upper ends of the plurality of limit blocks 4, one end of the plurality of conduits 6 is fixedly connected with a connecting pipe 7, a suction fan 8 is fixedly installed on the thermal insulation cover 2, the output end of the suction fan 8 is fixedly connected with the connecting pipe 7, a plurality of through holes are opened on the surface of the thermal insulation cover 2, one end of the conduit 6 passes through the through hole.

[0024] When the glass tube slides on the runway body 3, the suction fan 8 is started, and suction is generated on the connecting tube 7 and the conduit 6 through the suction fan 8, and then suction is generated at the suction head 5 through the cavity and the suction hole. Then, when the glass tube passes through the suction head 5, the suction head 5 will generate a small suction on the glass tube. Under the action of the suction, the upper end of the glass tube contacts the arc-shaped limit block 4, and at the same time, the glass tube and the suction head 5 slide relative to each other, thereby ensuring that when the glass tube slides on the vacuum runway, the upper end of the glass tube fits with the limit block 4 to avoid collapse of the upper end, ensuring that the shape and wall thickness of the glass tube are uniform, and improving the ellipticity and production qualification rate of the glass tube.

[0025] A plurality of rolling assemblies are fixedly mounted on the surface of the limit block 4. The rolling assemblies are used to reduce the friction between the limit block 4 and the glass tube. The rolling assemblies include two support blocks 9 fixedly mounted on the limit block 4 and a roller 10 rotatably mounted between the two support blocks 9. When relative sliding occurs between the glass tube and the suction head 5, the glass tube contacts the roller 10 and drives the roller 10 to rotate during the sliding process. Under the action of the roller 10, the friction between the limit block 4 and the glass tube can be reduced.

[0026] The locking assembly includes a fixed block 11 fixedly mounted on the side of the support platform 1, an L-shaped plug block 12 fixedly mounted on the side of the insulation cover 2, and a limiting component arranged on the fixed block 11 for limiting the plug block 12. A plug hole is provided on the surface of the fixed block 11, one end of the plug block 12 is inserted into the plug hole, and a rectangular hole is provided on the plug block 12. The limiting component includes two spring rods 13 fixedly mounted on the fixed block 11 and two positioning blocks 14 respectively slidably mounted on one end of the two spring rods 13, and one end of the two positioning blocks 14 are both inserted in the rectangular hole.

[0027] When the vacuum runway fails, the positioning block 14 can be moved horizontally so that the positioning block 14 slides on one end of the spring rod 13, so that one end of the positioning block 14 is pulled out from the rectangular hole, thereby releasing the restriction effect on the plug-in block 12, and then the insulation cover 2 is lifted, thereby driving the plug-in block 12 to be taken out from the plug hole opened in the fixed block 11.

[0028] When the insulation cover 2 is installed on the support platform 1, the spring rod 13 is in a compressed state, thereby ensuring that when the positioning block 14 is inserted into the rectangular hole, there is a vertical downward force, and then there is a vertical downward force on the insertion block 12. Under the action of the force, the insertion block 12 is ensured to be stably inserted into the insertion hole.

[0029] The surfaces of the two positioning blocks 14 are fixedly mounted with anti-skid pads made of rubber. The anti-skid pads can increase the friction between the positioning blocks 14 and the inner wall of the rectangular hole, ensuring that the positioning blocks 14 are stably inserted in the rectangular hole.

[0030] In the utility model, when the glass tube slides on the runway body 3, the suction fan 8 is started, and suction is generated on the connecting tube 7 and the conduit 6 through the suction fan 8, and then suction is generated at the suction head 5 through the cavity and the suction hole, and then when the glass tube passes through the suction head 5, the suction head 5 will generate a small suction on the glass tube, and under the action of the suction, the upper end of the glass tube is in contact with the arc-shaped limit block 4, and at the same time, relative sliding occurs between the glass tube and the suction head 5, so as to ensure that when the glass tube slides on the vacuum runway, the upper end of the glass tube is in contact with the limit block 4, avoiding the collapse of the upper end, ensuring that the shape of the glass tube is uniform, the wall thickness is uniform, and the ellipticity and production qualification rate of the glass tube are improved.

[0031] In general, regarding the technical problem: when the glass tube enters the vacuum runway, the shape of the glass tube is still in a soft state, and it has its own weight pressing downward, and the upper end of the glass tube may collapse, which can easily cause the shape of the glass tube in the runway to be uneven, and the wall thickness to be uneven, affecting the ellipticity of the glass tube, and the qualified rate is low; adopting a technical solution: through the mutual cooperation of the suction fan 8, the connecting pipe 7, the conduit 6, the limit block 4, the suction hole and the suction head 5, suction can be generated at the upper end of the glass tube, so that the upper end of the glass tube fits with the limit block 4; because the implementation process of the technical solution is: when the glass tube slides on the runway body 3, the suction fan 8 is started, and through The suction fan 8 generates suction on the connecting tube 7 and the conduit 6, and then generates suction at the suction head 5 through the cavity and the suction hole. Then, when the glass tube passes through the suction head 5, the suction head 5 will generate a small suction on the glass tube. Under the action of the suction, the upper end of the glass tube contacts the arc-shaped limit block 4, and at the same time, relative sliding occurs between the glass tube and the suction head 5, thereby ensuring that when the glass tube slides on the vacuum runway, the upper end of the glass tube fits with the limit block 4; therefore, the technical problem can be solved inevitably, and the technical effect achieved is: avoiding the collapse of the upper end, ensuring that the shape and wall thickness of the glass tube are uniform, and improving the ellipticity and production qualification rate of the glass tube.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum runway for horizontally drawing a glass tube, comprising a support platform (1), characterized in that: A heat preservation cover (2) is installed on the support platform (1) via multiple sets of locking components, an arc-shaped runway body (3) is fixedly installed on the support platform (1), and a glass tube is placed on the runway body (3); A plurality of arc-shaped limit blocks (4) are fixedly mounted on the runway body (3), a cavity is provided inside the limit block (4), a plurality of suction holes are provided on the surface of the limit block (4) and are all connected to the cavity, a suction head (5) is fixedly mounted in each of the plurality of suction holes, a conduit (6) connected to the cavity is fixedly mounted on the upper ends of the plurality of limit blocks (4), one end of each of the plurality of conduits (6) is fixedly connected to a connecting pipe (7), a suction fan (8) is fixedly mounted on the heat-insulating cover (2), an output end of the suction fan (8) is fixedly connected to the connecting pipe (7), a plurality of through holes are provided on the surface of the heat-insulating cover (2), and one end of the conduit (6) passes through the through hole.

2. A vacuum runway for horizontally drawing a glass tube according to claim 1, characterized in that: A plurality of rolling assemblies are fixedly mounted on the surface of the limit block (4), and the rolling assemblies are used to reduce the friction between the limit block (4) and the glass tube.

3. A vacuum runway for horizontally drawing a glass tube according to claim 2, characterized in that: The rolling assembly comprises two support blocks (9) fixedly mounted on the limit block (4) and a roller (10) rotatably mounted between the two support blocks (9).

4. A vacuum runway for horizontally drawing a glass tube according to claim 1, characterized in that: The locking assembly comprises a fixing block (11) fixedly mounted on the side of the support platform (1), an L-shaped plug block (12) fixedly mounted on the side of the heat-insulating cover (2), and a limiting component arranged on the fixing block (11) for limiting the plug block (12); a plug hole is provided on the surface of the fixing block (11), and one end of the plug block (12) is inserted into the plug hole.

5. A vacuum runway for horizontally drawing a glass tube according to claim 4, characterized in that: The insert block (12) is provided with a rectangular hole, and the limiting component comprises two spring rods (13) fixedly mounted on the fixed block (11) and two positioning blocks (14) respectively slidably mounted on one end of the two spring rods (13), and one end of the two positioning blocks (14) are both inserted into the rectangular hole.

6. A vacuum runway for horizontally drawing a glass tube according to claim 5, characterized in that: Anti-skid pads are fixedly mounted on the surfaces of the two positioning blocks (14), and the anti-skid pads are made of rubber.

Images