Glass tube forming device

Abstract

The present invention relates to the technical field of glass tube manufacturing, and provides a glass tube forming device, comprising: a main shaft; a rotating tube, sleeved on one end of the main shaft; an elastic member, sleeved on the main shaft, one end of the elastic member abutting against the rotating tube; a fixing member, sleeved on the main shaft and threadedly connected to the main shaft, the other end of the elastic member abutting against the fixing member. By arranging the elastic member and the fixing member at one end of the rotating tube, on the one hand, one end of the rotating tube can be abutted to ensure the stability of the rotating tube installation, and on the other hand, the rotating tube can push the elastic member when it expands due to heat, so as to provide expansion space for the rotating tube, thereby ensuring that the rotating tube will not explode, and ensuring the service life of the rotating tube.

Description

Technical Field

[0001] The invention relates to the technical field of glass tube manufacturing, and in particular to a glass tube forming device. Background Art

[0002] The glass tube forming technology is to guide the molten glass liquid to a rotating tube made of refractory material under heat preservation. The rotating tube has a certain inclination angle. The glass liquid flows to the surface of the rotating tube to form a uniform glass layer, which wraps the rotating tube. Then, it flows along the surface of the rotating tube to the lower end of the rotating tube under the action of gravity. Then, glass bubbles are formed under the blowing of compressed air from the center hole of the main shaft in the rotating tube, and a glass tube is formed under the traction of external force.

[0003] At present, both ends of the rotating tube are fixed, so that when the rotating tube is wrapped in high-temperature glass liquid, the rotating tube will expand rapidly. However, because both ends of the rotating tube are fixed, the rotating tube has no expansion space in the axial direction, which easily causes the rotating tube to explode, greatly shortening the service life of the rotating tube. Summary of the invention

[0004] The object of the present invention is to provide a glass tube forming device, aiming to solve the technical problem in the prior art that the rotating tube has no expansion space and thus affects its normal use.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a glass tube forming device, comprising:

[0006] Spindle;

[0007] A rotating tube, sleeved on one end of the main shaft;

[0008] An elastic member, sleeved on the main shaft, one end of the elastic member abutting against the rotating tube;

[0009] The fixing piece is sleeved on the main shaft and threadedly connected with the main shaft, and the other end of the elastic piece is against the fixing piece.

[0010] In one embodiment, the fixing member includes a first fixing ring threadedly connected to the main shaft, and one end of the elastic member abuts against the first fixing ring.

[0011] In one embodiment, the fixing member further includes a second fixing ring threadedly connected to the main shaft, and the first fixing ring and the second fixing ring abut against each other.

[0012] In one embodiment, the glass tube forming device further comprises a connecting member, one end of which is fixed to the first fixing ring, and the other end of which is fixed to the second fixing ring.

[0013] In one embodiment, an anti-damage component is provided on a side of the fixing ring facing the elastic component, and one end of the elastic component abuts against the anti-damage component.

[0014] In one embodiment, a shaft sleeve is sleeved on the main shaft, the elastic member is sleeved on the shaft sleeve, and the fixing member is threadedly connected to the shaft sleeve.

[0015] In one embodiment, the shaft sleeve comprises a first sleeve and a second sleeve spaced apart along the axial direction thereof, and the fixing member is threadedly connected to the second sleeve.

[0016] In one embodiment, a connecting tube is slidably sleeved on the first sleeve, one end of the connecting tube abuts against the rotating tube, and the other end of the connecting tube abuts against the elastic member.

[0017] In one embodiment, a guide block is provided on the outer surface of the first sleeve along its axial extension, and a slide groove is provided on the inner surface of the connecting tube along its axial direction for slidingly fitting with the guide block; or, a slide groove is provided on the outer surface of the first sleeve along its axial direction, and a guide block is radially protruded on the inner surface of the connecting tube for slidingly fitting with the slide groove.

[0018] In one embodiment, a pressure ring is sleeved on the shaft sleeve, one side of the pressure ring abuts against the connecting tube, and the other side of the pressure ring abuts against the rotating tube.

[0019] The glass tube forming device provided by the present invention has at least the following beneficial effects:

[0020] By arranging an elastic member and a fixing member at one end of the rotating tube, on the one hand, one end of the rotating tube can be tightened to ensure the stability of the installation of the rotating tube, and on the other hand, the rotating tube can push the elastic member when it expands due to heat, so as to provide expansion space for the rotating tube, thereby ensuring that the rotating tube will not explode and ensuring the service life of the rotating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A partial cross-sectional structural schematic diagram of a glass tube forming device provided in an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a limit assembly in an embodiment of the present invention;

[0024] Figure 3 is a radial cross-sectional schematic diagram of a first sleeve in an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a top view of the structure of a first sleeve in an embodiment of the present invention;

[0026] Figure 5 It is a schematic cross-sectional structural diagram of a connecting pipe in an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressure ring in the embodiment of the present invention.

[0028] Figure numerals: 1. rotating tube; 11. thermal insulation cotton; 12. chamfer; 2. main shaft; 21. first shaft section; 22. second shaft section; 3. elastic member; 4. fixing member; 41. first fixing ring; 411. first screw hole; 412. second convex ring; 42. second fixing ring; 421. second screw hole; 5. connecting member; 6. shaft sleeve; 61. first sleeve; 611. guide block; 62. second sleeve; 7. connecting tube; 71. slide groove; 72. external spline; 73. first convex ring; 8. pressure ring; 81. internal spline; 82. abutment ring; 821. inclined surface; 9. anti-damage member. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1 As shown, a glass tube forming device provided by an embodiment of the present invention is now described in detail. The glass tube forming device comprises: a rotating tube 1, a main shaft 2, an elastic member 3 and a fixing member 4. Among them, the rotating tube 1 is sleeved outside one end of the main shaft 2, the elastic member 3 is sleeved on the main shaft 2, the fixing member 4 is sleeved on the main shaft 2 and is threadedly connected with the main shaft 2, one end of the elastic member 3 abuts against the rotating tube 1, and the other end of the elastic member 3 abuts against the fixing member 4. The rotating tube 1 is tilted, and the end of the rotating tube 1 away from the elastic member 3 is the front end, and the front end is the lower end. One end of the main shaft 2 is fixedly connected to the front end of the rotating tube 1 through a high temperature resistant end head, and the rear end of the rotating tube 1 abuts against the elastic member 3. The fixing member 4 is used to limit the position of the elastic member 3 and adjust the elastic force of the elastic member 3.

[0034] A glass tube forming device provided by an embodiment of the present invention provides an elastic member 3 and a fixing member 4 at one end of a rotating tube 1. On the one hand, the one end of the rotating tube 1 can be pressed tightly to ensure the stability of the installation of the rotating tube 1. On the other hand, the rotating tube 1 can push the elastic member 3 when it expands due to heat, so as to provide expansion space for the rotating tube 1, thereby ensuring that the rotating tube 1 will not explode and ensuring the service life of the rotating tube 1.

[0035] In this embodiment, if Figure 1 and Figure 2 As shown, the fixing member 4 at least includes a first fixing ring 41 threadedly connected to the main shaft 2, and one end of the elastic member 3 abuts against one end of the first fixing ring 41. The first fixing ring 41 is threadedly connected to the main shaft 2, which facilitates the installation of the first fixing ring 41 and also facilitates the adjustment of the distance between the first fixing ring 41 and the rotating tube 1, thereby adjusting the elastic force of the elastic member 3.

[0036] Preferably, if Figure 1 and Figure 2As shown, the fixing member 4 also includes a second fixing ring 42 threadedly connected to the main shaft 2, and the first fixing ring 41 and the second fixing ring 42 abut against each other. The function of the second fixing ring 42 is to increase the anti-loosening ability of the first fixing ring 41 through abutting action, thereby ensuring the stability of the limiting and abutting action of the fixing member 4 on the elastic member 3. In this embodiment, the first fixing ring 41 and the second fixing ring 42 are both nuts, preferably anti-loosening nuts.

[0037] When the first fixing ring 41 and the second fixing ring 42 are threadedly assembled on the main shaft 2, the positions of the first fixing ring 41 and the second fixing ring 42 are fixed, and the position of the elastic member 3 close to the end of the first fixing ring 41 is restricted. At this time, the end of the elastic member 3 close to the rotating tube 1 can only be compressed under the action of the thermal expansion of the rotating tube 1, so that the elastic member 3 has a pressing and fixing effect on the rotating tube 1.

[0038] Preferably, if Figure 1 and Figure 2 As shown, the glass tube forming device further includes a connecting member 5, one end of which is fixed to the first fixing ring 41, and the other end is fixed to the second fixing ring 42. The connecting member 5 is used to fix the first fixing ring 41 and the second fixing ring 42 together, so that the first fixing ring 41 and the second fixing ring 42 can only rotate synchronously, so that the rotation of the first fixing ring 41 and the second fixing ring 42 requires a larger external force, and the first fixing ring 41 cannot rotate only under the abutting force of the elastic member 3, which further improves the anti-loosening effect of the first fixing ring 41.

[0039] Specifically, Figure 2 As shown, in the present embodiment, the connecting member 5 is a connecting plate, a first screw hole 411 is radially opened on the outer peripheral surface of the first fixing ring 41, and a second screw hole 421 is radially opened on the outer peripheral surface of the second fixing ring 42. One end of the connecting plate is threadedly connected to the first screw hole 411 and fixed to the outer peripheral surface of the first fixing ring 41 by a first screw (not shown in the figure), and the other end of the connecting plate is threadedly connected to the second screw hole 421 and fixed to the outer peripheral surface of the second fixing ring 42 by a second screw (not shown in the figure). The connecting plate fits with the outer peripheral surfaces of the first fixing ring 41 and the second fixing ring 42; wherein, the first screw hole 411 and the second screw hole 421 can also be screwed with a handle to facilitate the rotation of the first fixing ring 41 and the second fixing ring 42, so as to improve the efficiency of tightening or loosening the first fixing ring 41 and the second fixing ring 42. In other embodiments, the connecting piece is a U-shaped piece, and the two side pieces of the connecting piece are respectively attached to one end face of the first fixing ring 41 away from the second fixing ring 42 and one end face of the second fixing ring 42 away from the first fixing ring 41. In this case, the first screw hole 411 and the second screw hole 421 can be arranged radially or axially. In this embodiment, the connecting member 5 is made of metal material such as steel.

[0040] In one embodiment, Figure 1 and Figure 2 As shown, a damage prevention member 9 is provided on the side of the first fixing ring 41 facing the elastic member 3, and one end of the elastic member 3 abuts against the damage prevention member 9. The damage prevention member 9 is used to protect the outer surface of the first fixing ring 41 to prevent the elastic member 3 from directly abutting against the first fixing ring 41 and causing wear to the first fixing ring 41. The side of the damage prevention member 9 close to the first fixing ring 41 is a smooth surface to further reduce the friction between the two. In this embodiment, the damage prevention member 9 is a gasket, which is a flat gasket and is made of metal material such as steel.

[0041] In one embodiment, Figure 1 and Figure 3 As shown, the main shaft 2 is sleeved with a shaft sleeve 6, the elastic member 3 is sleeved on the shaft sleeve 6, and the fixing member 4 is threadedly connected to the shaft sleeve 6. The shaft sleeve 6 is used to protect the main shaft 2. On the one hand, it is convenient to install the elastic member 3 and the fixing member 4, and on the other hand, it reduces the processing steps applied to the main shaft 2, such as reducing the process of processing external threads on the main shaft 2, which is beneficial to ensure the performance of the main shaft 2 and ensure the strength of the main shaft 2.

[0042] Preferably, in this embodiment, the shaft sleeve 6 includes a first sleeve 61 and a second sleeve 62 spaced apart along the axial direction thereof, and the fixing member 4 is threadedly connected to the second sleeve 62. There is a gap between the first sleeve 61 and the second sleeve 62, so that when the first sleeve 61 is heated, it can provide expansion space for the first sleeve 61. The second sleeve 62 is sleeved on the main shaft 2 by welding, and the external thread of the outer peripheral surface of the second sleeve 62 can be a rectangular thread or a spiral thread. The rectangular thread is preferred, which can effectively increase the anti-loosening effect of the fixing member 4.

[0043] Preferably, if Figure 1 , Figure 4 and Figure 5 As shown, a connecting tube 7 is slidably sleeved on the first sleeve 61, one end of the connecting tube 7 abuts against the rotating tube 1, and the other end abuts against the elastic member 3. The connecting tube 7 mainly plays a connecting role, so as to keep the elastic member 3 away from the rotating tube 1, thereby keeping the elastic member 3 away from the high temperature area, which can effectively ensure the service life of the elastic member 3. In addition, the connecting tube 3 can also relatively reduce the length of the elastic member 3, thereby effectively ensuring the stability of the elastic force of the elastic member 3.

[0044] Specifically, Figure 1 , Figures 3 to 5As shown, in this embodiment, the outer surface of the first sleeve 61 is provided with a guide block 611 extending along its axial direction, and the inner surface of the connecting tube 7 is provided with a slide groove 71 slidingly assembled with the guide block 611 along its axial direction. The connecting tube 7 can only slide along the axial direction of the first sleeve 61 through the guide block 611 and the slide groove 71, so that the connecting tube 7 and the first sleeve 61 are integrated as a whole, reducing the friction between the connecting tube 7 and the elastic member 3 when the connecting tube 7 rotates relative to the first sleeve 61, and can play a role in preventing wear on the surfaces of the elastic member 3 and the connecting tube 7. Among them, a groove extending along the axis is provided on the outer peripheral surface of the first sleeve 61, and the guide block 611 is partially embedded in the groove and fixed to the first sleeve 61 by screws, so that the replacement of the guide block 611 is convenient, or the guide block 611 is integrally formed with the first sleeve 61 or fixed to the first sleeve 61 by welding. In other embodiments, the outer surface of the first sleeve 61 is provided with a slide groove 71 along its axial direction, and the inner surface of the connecting tube 7 is radially protruded with a guide block 611 slidingly engaged with the slide groove 71.

[0045] Preferably, if Figure 1 , Figure 5 and Figure 6 In this embodiment, a pressing ring 8 is sleeved on the shaft sleeve 6, one end of the pressing ring 8 abuts against the connecting tube 7, and the other end abuts against the rotating tube 1. In this embodiment, the pressing ring 8 is plugged into the connecting tube 7 through a spline. Specifically, an inner spline 81 is provided at one end of the pressing ring 8 close to the connecting tube 7, and an outer spline 72 is provided at one end of the connecting tube 7 close to the pressing ring 8. The inner spline 81 is plugged into the outer spline 72, so that the pressing ring 8 rotates synchronously with the connecting tube 7, thereby making the pressing ring 8 rotate synchronously with the rotating tube 1, playing the role of positioning and preventing the pressing ring 8 and the rotating tube 1 from rotating relative to the main shaft 2, and also reducing the friction between the pressing ring 8 and the rotating tube 1, preventing the pressing ring 8 and the connecting tube 7 from causing wear.

[0046] In this embodiment, an abutment ring 82 is provided at one end of the pressure ring 8 close to the rotating tube 1, and the outer diameter of the abutment ring 82 is larger than the outer diameter of the rotating tube 1, and one end of the rotating tube 1 abuts inside the abutment ring 82. Specifically, the inner surface of the abutment ring 82 is provided with an inclined surface 821 that gradually shrinks inward along its axis toward away from the rotating tube 1, and the end surface of the rotating tube 1 close to the pressure ring 8 is chamfered at the outer edge 12, and the chamfer 12 is adapted to fit the inclined surface 821. In this way, the abutment ring 82 partially protrudes from the radial outer surface of the rotating tube 1, which is convenient for workers or other tools to apply external force to the pressure ring 8, so that the pressure ring 8 slides in the direction away from the rotating tube 1, so that the rotating tube 1 is separated from the pressure ring 8, and the rotating tube 1 is convenient to move in the direction close to the pressure ring 8, so that the end of the rotating tube 1 away from the pressure ring 8 is separated from the end of the fixed rotating tube 1, thereby facilitating the replacement of the rotating tube 1.

[0047] In this embodiment, if Figure 1 and Figure 5As shown, one end of the connecting tube 7 close to the elastic member 3 is provided with a first convex ring 73 convex outwardly in the radial direction, and one end of the elastic member 3 abuts against the end face of the first convex ring 73. The end face of the first convex ring 73 close to the elastic member 3 is spaced a certain distance from the end face of the connecting tube 7 close to the elastic member 3, so that when the elastic member 3 is sleeved on the first connecting tube 7 and abuts on the first convex ring 73, the elastic member 3 can be effectively clamped, thereby increasing the stability of the installation of the elastic member 3.

[0048] Preferably, if Figure 1 and Figure 2 As shown, a second convex ring 412 extending along the axis of the first fixing ring 41 is provided at one end close to the elastic member 3, and the anti-damage member 9 is sleeved on the second convex ring 412. In this embodiment, the radial cross-section of the anti-damage member 9 is L-shaped, so that the elastic member 3 only contacts the anti-damage member 9, ensuring that the first fixing ring 41 will not be worn. The sum of the radial thickness of the second convex ring 412 and the thickness of the anti-damage member 9 is equal to the radial thickness of the connecting tube 7, so that after one end of the elastic member 3 is sleeved on the connecting tube 7 and the other end is sleeved on the anti-damage member 9, the two ends of the elastic member 3 are in Figure 1 The horizontal state in the middle has a certain protective effect on the elastic member 3 and ensures the stability of the installation of the elastic member 3. In this embodiment, the elastic member 3 is a spring.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass tube forming device, characterized in that: include: Spindle; A rotating tube, sleeved on one end of the main shaft; An elastic member, sleeved on the main shaft, one end of the elastic member abutting against the rotating tube; One end of the elastic member close to the rotating tube is compressed under the thermal expansion of the rotating tube; A fixing member is sleeved on the main shaft and threadedly connected to the main shaft, and the other end of the elastic member abuts against the fixing member; the fixing member includes a first fixing ring threadedly connected to the main shaft, and one end of the elastic member abuts against the first fixing ring; a damage prevention member is provided on one side of the fixing member facing the elastic member, and one end of the elastic member abuts against the damage prevention member; The main shaft is sleeved with a shaft sleeve, the elastic member is sleeved on the shaft sleeve, the fixing member is threadedly connected to the shaft sleeve, the shaft sleeve includes a first sleeve and a second sleeve spaced apart along its axial direction, and the fixing member is threadedly connected to the second sleeve; there is a gap between the first sleeve and the second sleeve.

2. A glass tube forming device according to claim 1, characterized in that: The fixing member further comprises a second fixing ring threadably connected to the main shaft, and the first fixing ring and the second fixing ring abut against each other.

3. A glass tube forming device according to claim 2, characterized in that: The glass tube forming device further comprises a connecting piece, one end of which is fixed to the first fixing ring, and the other end of which is fixed to the second fixing ring.

4. A glass tube forming device according to claim 1, characterized in that: A connecting tube is slidably sleeved on the first sleeve, one end of the connecting tube abuts against the rotating tube, and the other end abuts against the elastic member.

5. A glass tube forming device according to claim 4, characterized in that: A guide block is provided on the outer surface of the first sleeve along its axial extension, and a slide groove is provided on the inner surface of the connecting tube along its axial extension for slidingly assembling with the guide block; or, a slide groove is provided on the outer surface of the first sleeve along its axial extension, and a guide block is radially protruded on the inner surface of the connecting tube for slidingly fitting with the slide groove.

6. A glass tube forming device according to claim 4, characterized in that: A pressure ring is sleeved on the shaft sleeve, one side of the pressure ring abuts against the connecting tube, and the other side of the pressure ring abuts against the rotating tube.

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