A temperature measuring probe fixing structure of a wire drawing furnace and an optical fiber wire drawing equipment

Abstract

The utility model discloses a kind of temperature measurement probe fixing structure of wire drawing furnace, including furnace body, graphite heat preservation layer and central heating pipe being sequentially arranged from outside to inside, and furnace body is equipped with temperature measurement hole of through graphite heat preservation layer, further including fixing piece, temperature measurement probe and telescopic component, wherein, fixing piece is arranged at the outside of furnace body, its inside is equipped with the guide hole of alignment and intercommunication temperature measurement hole;Temperature measurement probe is arranged in temperature measurement hole and it can be slidably cooperated with guide hole;Telescopic component is partially arranged in guide hole and is connected with temperature measurement probe;Wherein, temperature measurement probe is configured to be controlled by telescopic component and moves into or moves out temperature measurement hole.The temperature measurement probe fixing structure of wire drawing furnace can keep the position of temperature measurement probe from deviating, ensure the accuracy of temperature measurement, reduce the occurrence of abnormal situation;In addition, telescopic guide installation mode can reduce the error possibility in manual installation process while improving the alignment efficiency of temperature measurement probe, so as to improve equipment operation rate and production capacity.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber drawing devices, and in particular to a fixing structure for a temperature measuring probe in a drawing furnace and an optical fiber drawing device. Background Technology

[0002] As one of the core equipment for optical fiber drawing, the high-frequency drawing induction furnace for optical fiber preforms (optical fiber drawing furnace) needs to be shut down periodically to cool down and clean the furnace in order to avoid problems such as oxidation of graphite parts and dust shedding due to prolonged high temperature during production, which would affect the quality of the optical fiber.

[0003] However, after each furnace cleaning, the temperature probe installed inside the furnace often deviates due to the disassembly or reassembly of the heating center tube, resulting in inaccurate temperature display. Consequently, it cannot accurately control the temperature during the fiber drawing process, and in severe cases, it may even lead to the abnormal scrapping of the optical fiber.

[0004] Currently, temperature probes are mostly aligned manually, and the operation relies heavily on past experience. This is time-consuming and laborious for newcomers. Furthermore, if the temperature deviates and becomes uncontrollable, the furnace needs to be cooled down, disassembled, and aligned again. Utility Model Content

[0005] The purpose of this utility model is to provide a fixing structure for the temperature probe of a wire drawing furnace, which solves the problem of the temperature probe shifting inside the furnace due to disassembly and assembly operations such as equipment maintenance and process adjustment, so as to ensure the accuracy of temperature measurement and reduce the error rate while improving the alignment efficiency of the temperature probe.

[0006] The objective of this utility model is achieved through the following technical solution: A temperature probe fixing structure for a wire drawing furnace includes a furnace body, a graphite insulation layer, and a central heating tube arranged sequentially from the outside to the inside. The furnace body has a temperature measuring hole penetrating the graphite insulation layer. The structure also includes: A fixing component is provided on the outside of the furnace body, and a guide hole is provided inside to align with and communicate with the temperature measuring hole; A temperature probe is disposed inside the temperature measuring hole and is capable of slidingly engaging with the guide hole; A telescopic assembly is partially disposed in the guide hole and connected to the temperature probe; wherein the temperature probe is configured to be controlled by the telescopic assembly to move into or out of the temperature probe hole.

[0007] In some embodiments, the fastener is welded to the furnace body, and the fastener includes, but is not limited to, a hollow tube.

[0008] In some embodiments, the telescopic component includes: A spring is disposed between the tail end of the temperature probe and the outer end of the fixing member; A pull pin, inserted from the outside into the fixing member, connects to the temperature probe, and the pull pin is configured to move along the axial direction of the fixing member; A locking sleeve is provided at the outer end of the fixing member; wherein, when the temperature probe is moved out of the temperature measuring hole, the locking sleeve can just fix the pull pin.

[0009] In some embodiments, the fastener is provided with an axially extending groove, and the pull pin is located within the groove.

[0010] In some embodiments, the locking sleeve is connected to the fastener via a hinge or a pull cord.

[0011] In some embodiments, the telescopic component includes: A linear drive component is axially disposed on the outside of the fixed component; The connecting arm is connected at one end to the tail of the temperature probe and at the other end to the movable part of the linear drive.

[0012] In some embodiments, the linear drive includes, but is not limited to, an electric actuator.

[0013] In some embodiments, a distance sensor is provided on the connecting arm.

[0014] In some embodiments, a signal line is connected to the tail of the temperature probe, and the signal line passes directly out from the outer end of the fixing member or through a wire groove on the side of the fixing member.

[0015] An optical fiber drawing device includes the aforementioned drawing furnace temperature probe fixing structure.

[0016] Compared with the prior art, the beneficial effects of this utility model include at least the following: 1. It can keep the temperature probe in its own position without shifting, thereby ensuring the accuracy of temperature measurement and reducing the occurrence of abnormalities.

[0017] 2. The telescopic guide installation method not only improves the alignment efficiency of the temperature probe, but also reduces the possibility of errors during manual installation, thereby improving equipment operating rate and production capacity.

[0018] 3. The overall structure is simple and easy to operate; even inexperienced personnel can complete the installation of the temperature probe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the fixing structure of the temperature measuring probe in the wire drawing furnace of Example 1.

[0020] Figure 2 This is a schematic diagram of the fixing structure of the temperature measuring probe in the wire drawing furnace of Example 1.

[0021] In the diagram: 1. Furnace body; 2. Graphite insulation layer; 3. Central heating tube; 4. Temperature measuring hole; 5. Fixing component; 51. Guide hole; 52. Slide groove; 53. Cable groove; 6. Temperature probe; 7. Telescopic assembly; 71. Spring; 72. Pull pin; 73. Locking sleeve; 74. Linear drive component; 75. Connecting arm; 8. Distance sensor; 9. Signal line. Detailed Implementation

[0022] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0023] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0024] See Figure 1 and Figure 2 As shown, this utility model discloses a fixing structure for a temperature measuring probe 6 in a wire drawing furnace, comprising a furnace body 1, a graphite insulation layer 2, and a central heating tube 3 arranged sequentially from the outside to the inside. The furnace body 1 has a temperature measuring hole 4 penetrating the graphite insulation layer 2. Furthermore, the fixing structure for the temperature measuring probe 6 in the wire drawing furnace also includes a fixing component 5, a temperature measuring probe 6, and a telescopic assembly 7.

[0025] The temperature probe 6 is installed inside the temperature measuring hole 4 to measure the temperature of the central heating tube 3, and can transmit the signal to the control system (not shown) through the signal line 9 connected to its tail, thereby realizing temperature control and adjustment during the wire drawing process.

[0026] The fixing member 5 is located on the outside of the furnace body 1. It can be kept in place by means of the furnace body 1 or an external bracket. The fixing member 5 has a guide hole 51 inside that aligns with and communicates with the temperature measuring hole 4. This hole slides with the temperature measuring probe 6 and is used to limit and guide its movement, ensuring the accuracy of the alignment of the temperature measuring probe 6. In this application, the fixing member 5 is welded to the furnace body 1. The fixing member 5 includes, but is not limited to, a hollow tube.

[0027] The telescopic component 7 can be a manual or automatic telescopic component that can move axially along the guide hole 51. The telescopic component 7 is partially disposed in the guide hole 51 and connected to the temperature probe 6, so that the temperature probe 6 can move into or out of the temperature measuring hole 4 as it moves in and out.

[0028] It is understandable that the design of the telescopic component 7 and the fixing component 5 can keep the temperature probe 6 in its own position without shifting, thereby ensuring the accuracy of temperature measurement and effectively reducing the occurrence of abnormalities. On the other hand, the telescopic guide installation method can improve the alignment efficiency of the temperature probe 6 while reducing the possibility of errors in the manual installation process, thereby improving the equipment operating rate and production capacity.

[0029] Example 1 like Figure 1 As shown, Embodiment 1 provides a manually controlled telescopic assembly 7. In this example, the telescopic assembly 7 includes a spring 71, a pull pin 72, and a locking sleeve 73. The spring 71 is disposed between the tail of the temperature probe 6 and the outer end of the fixing member 5. The outer end of the fixing member 5 can be closed or fitted with a stop to ensure effective installation of the spring 71. The pull pin 72 is inserted into the fixing member 5 from the outside and connects to the temperature probe 6. For example, the pull pin 72 can be inserted into the fixing member 5 radially along the guide hole 51 for easy manual operation. Furthermore, the pull pin 72 is configured to move axially along the fixing member 5, thereby moving the temperature probe 6 into or out of the temperature measuring hole 4. The locking sleeve 73 is disposed at the outer end of the fixing member 5, and its diameter is adapted to the pull pin 72. It is used to fix the pulled pin 72 after it has moved outward, thereby locking the temperature probe 6 out of the temperature measuring hole 4.

[0030] Before disassembling the machine for equipment maintenance, process adjustments, or other reasons, the temperature probe 6 can be moved outward by pulling pin 72. When the temperature probe 6 moves out of the temperature measuring hole 4, the locking sleeve 73 can just fix the pulling pin 72, and then the corresponding work can be carried out on the internal components of the furnace. After the work is completed, the locking sleeve 73 is released from the restriction of the pulling pin 72, and the compressed spring 71 can push the temperature probe 6 into the temperature measuring hole 4. During this period, the operator can use the pulling pin 72 to slow down the movement speed of the temperature probe 6 until it safely enters the temperature measuring hole 4 and stops. As can be seen from the above description, the telescopic component 7 has the advantages of simple structure, convenient operation, and extremely low cost of use.

[0031] In some embodiments, the fixing member 5 is provided with a sliding groove 52 extending axially, and the pull pin 72 is located in the sliding groove 52 to meet the axial movement requirements of the pull pin 72. Further, the sliding groove 52 can be configured such that when the temperature probe 6 moves into the temperature measuring hole 4, its inner end just abuts against the pull pin 72, and the limiting effect of the sliding groove 52 ensures that the temperature probe 6 is safely in place.

[0032] In some embodiments, the locking sleeve 73 is connected to the fixing member 5 by a hinge or a pull rope, thereby increasing the degree of freedom of the locking sleeve 73 and facilitating its assembly and fixing with the pull pin 72.

[0033] Example 2 like Figure 2As shown, Embodiment 1 provides an automatically controlled telescopic assembly 7. In this example, the telescopic assembly 7 includes a linear drive 74 and a connecting arm 75.

[0034] The linear drive 74 is axially positioned on the outside of the fixed member 5. For cost and control reasons, the linear drive 74 is preferably an electric push rod. The connecting arm 75 is generally L-shaped, with one end connected to the tail of the temperature probe 6 and the other end connected to the movable part of the linear drive 74.

[0035] In use, the linear drive 74 is controlled by a connected control system (not shown) or remote control, and can extend or retract as needed, and moves the temperature probe 6 into or out of the temperature measuring hole 4 via the connecting arm 75. Compared with the manual extension mode, the extension component 7 of Embodiment 2 adopts automatic control, which is more convenient to operate.

[0036] In some embodiments, a device capable of telescopic movement, such as a cylinder, hydraulic cylinder, or crank-connecting rod mechanism, may be selected as the linear drive component 74.

[0037] In some embodiments, a distance sensor 8 is provided on the connecting arm 75. The distance sensor 8 is used to detect the position of the connecting arm 75 to the fixing member 5 or the furnace body 1, thereby indirectly calculating the position of the temperature probe 6 and facilitating the adjustment of the position of the temperature probe 6.

[0038] In some embodiments, the signal line 9 passes directly from the outer end of the fixing member 5 or from the wire groove 53 on the side of the fixing member 5.

[0039] This utility model also discloses an optical fiber drawing device, including the above-mentioned drawing furnace temperature probe 6 fixing structure. This prevents the temperature probe 6 inside the furnace from shifting during disassembly and assembly operations such as maintenance and process adjustment, ensuring the accuracy of temperature measurement and reducing or avoiding the occurrence of optical fiber scrapping due to abnormal temperature measurement.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A temperature probe fixing structure for a wire drawing furnace, comprising a furnace body (1), a graphite insulation layer (2), and a central heating tube (3) arranged sequentially from the outside to the inside, wherein the furnace body (1) is provided with a temperature measuring hole (4) penetrating the graphite insulation layer (2), characterized in that, Also includes: A fixing member (5) is provided on the outside of the furnace body (1), and a guide hole (51) is provided inside to align with and communicate with the temperature measuring hole (4). A temperature probe (6) is disposed inside the temperature measuring hole (4) and is able to slide in conjunction with the guide hole (51); A telescopic assembly (7) is partially disposed in the guide hole (51) and connected to the temperature probe (6); wherein the temperature probe (6) is configured to be controlled by the telescopic assembly (7) to move into or out of the temperature probe (4).

2. The wire drawing furnace temperature probe fixing structure according to claim 1, characterized in that, The fastener (5) is welded to the furnace body (1), and the fastener (5) includes, but is not limited to, a hollow tube.

3. The wire drawing furnace temperature probe fixing structure according to claim 2, characterized in that, The telescopic component (7) includes: A spring (71) is disposed between the tail of the temperature probe (6) and the outer end of the fixing member (5); Pull pin (72), after being inserted from the outside into the fixing member (5), is connected to the temperature probe (6), and the pull pin (72) is configured to be movable along the axial direction of the fixing member (5); A locking sleeve (73) is provided at the outer end of the fixing member (5); wherein, when the temperature probe (6) moves out of the temperature measuring hole (4), the locking sleeve (73) can just fix the pull pin (72).

4. The wire drawing furnace temperature probe fixing structure according to claim 3, characterized in that, The fastener (5) is provided with a groove (52) extending axially, and the pull pin (72) is located in the groove (52).

5. The wire drawing furnace temperature probe fixing structure according to claim 3, characterized in that, The locking sleeve (73) is connected to the fixing member (5) by a hinge or a pull rope.

6. The fixing structure for the temperature measuring probe of the wire drawing furnace according to claim 1, characterized in that, The telescopic component (7) includes: A linear drive member (74) is axially disposed on the outside of the fixing member (5); The connecting arm (75) is connected at one end to the tail of the temperature probe (6) and at the other end to the movable part of the linear drive (74).

7. The wire drawing furnace temperature probe fixing structure according to claim 6, characterized in that, The linear drive (74) includes, but is not limited to, an electric push rod.

8. The wire drawing furnace temperature probe fixing structure according to claim 6, characterized in that, A distance sensor (8) is provided on the connecting arm (75).

9. The wire drawing furnace temperature probe fixing structure according to claim 1, characterized in that, The tail of the temperature probe (6) is connected to a signal line (9), which passes directly out from the outer end of the fixing member (5) or through the wire groove (53) on the side of the fixing member (5).

10. An optical fiber drawing device, characterized in that, Includes the wire drawing furnace temperature probe fixing structure as described in any one of claims 1-9.

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