Fiber optic finished rod lifting rack

Abstract

The present invention discloses a lifting stand for finished optical fiber rods, comprising a movable door frame, a bracket slidably connected to the movable door frame, a chain mounted on the bracket, a telescopic rod mounted in the movable door frame, and the chain lapped on the telescopic end of the telescopic rod; and a support frame transferred to the front end of the support frame, the support frame comprising a first support rod and a second support rod, the first support rod and the second support rod being hinged, a slide mounted at the front end of the second support rod, and receiving grooves at both ends of the slide, wherein rollers are mounted in the receiving grooves. A lifting mechanism and an angle adjustment mechanism are provided, which can adjust the angle of the preform rod, so that the preform rod is located at the furnace core position, so that the preform rod can be heated evenly and the heating speed can be increased. At the same time, the preform rod is placed in the center of the furnace, which can prevent the preform rod from sticking to the furnace wall after heating. A lifting mechanism is provided to facilitate the placement of the preform rod and to lift the preform rod to a suitable angle.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber processing equipment, in particular to a lifting stand for finished optical fiber rods. Background Art

[0002] The finished optical fiber rod is a finished product obtained after a one-step processing of the preform rod. During the manufacture of optical fiber, the preform rod needs to be heated and then drawn to obtain the finished rod. Heating is an important process in the production of optical fiber preform rods. When heating, first, the preform is placed in the rod hanging device. Specifically, the pin needs to be inserted into the socket of the upper quartz handle rod at the upper end of the preform and the socket of the adapter at the lower end of the guide rod to achieve the placement of the preform on the guide rod; then, the lifting frame in the rod hanging device is used to lower the guide rod to the appropriate position, and the preform is sent into the furnace core tube of the sintering furnace to complete the heating stage.

[0003] Since the position of the guide rod will deviate when the rod is hung, when the position of the guide rod is offset, the rod will come into contact with the furnace wall and easily cause deformation and adhesion. Currently, the furnace core tube can only be cooled down and then the position of the furnace core tube can be moved to make the guide rod position located in the center of the furnace core tube. In this operation, time is wasted due to the need to wait for cooling, which delays heating. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the problem in the above or existing technologies that the position of the guide rod may deviate when the rod is hung, when the position of the guide rod is offset, the furnace core tube can only be cooled and then the position of the furnace core tube is moved to make the guide rod be located at the center of the furnace core tube, which wastes time and delays heating. Since the speed of pushing the preform rod into the furnace is uneven, each section of the preform rod is heated differently, and the finished rods are prone to unequal diameters and breakage during drawing. The present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a lifting frame for finished optical fiber rods, comprising a movable door frame,

[0007] A bracket is slidably connected to the movable door frame, and a chain is installed on the bracket. At the same time, a telescopic rod is installed in the movable door frame, and the chain is overlapped on the telescopic end of the telescopic rod;

[0008] It also includes a support frame transferred to the front end of the bracket, the support frame includes a first support rod and a second support rod, and the first support rod and the second support rod are hinged, the front end of the second support rod is equipped with a slide, and accommodating grooves are opened at both ends of the slide, and sliding rollers are installed in the accommodating grooves.

[0009] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, the support frame further includes an adjustment rod pinned to the first support rod, and the upper end of the adjustment rod is provided with a clamping plate for clamping to the second support rod.

[0010] As a preferred solution of the optical fiber finished rod lifting rack of the present invention, the slide includes a bridge plate and a pair of connecting plates, wherein the two ends of the bridge plate are respectively connected to the centers of the two connecting plates, and the accommodating grooves are opened at both ends of the connecting plates.

[0011] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, the two ends of the sliding roller are provided with rotating shafts inserted into the inner wall of the accommodating groove, and the surface of the sliding roller is arranged with multiple friction protrusions, and the diameters of the two ends of the sliding roller are larger than the diameter of the middle part.

[0012] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, the friction protrusions are arranged in a matrix on the surface of the sliding roller, and the friction protrusions have a cone-shaped structure, and the tops of the friction protrusions are bent in the same direction.

[0013] As a preferred solution of the optical fiber finished rod lifting rack of the present invention, the bracket is composed of a base plate, a screw rod and a right-angle plate, wherein the right-angle plate is sleeved on the screw rod, there are two screw rods and two right-angle plates, and the support frame is assembled on the right-angle plate.

[0014] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, two screws are respectively installed at the two ends of the base plate using bearings, and a partition is provided between the two screws. Similarly, the screws are connected to the partition plate using bearings, and the threads of the two screws are arranged in opposite directions. Motors are provided at both ends of the base plate and are respectively connected to the two screws.

[0015] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, a connecting ring is further provided at the center of the upper surface of the base plate, and one end of the chain is connected to the connecting ring, while the other end of the chain is connected to the crossbar on the movable door frame.

[0016] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, a notch is provided at the top of the output end of the telescopic rod, and a sprocket is assembled in the notch by means of a rotating shaft, and the chain is engaged with the sprocket.

[0017] As a preferred solution of the optical fiber finished rod lifting stand of the present invention, a grounding arm for maintaining stability is provided at the bottom of the movable door frame, and an auxiliary wheel is provided at the rear top of the grounding arm to facilitate the movement of the frame.

[0018] The optical fiber finished rod lifting stand of the present invention has the following beneficial effects:

[0019] (1) In the present application, in order to solve the above-mentioned problems, a lifting mechanism and an angle adjustment mechanism are provided, wherein the adjustment mechanism formed by the support frame can adjust the angle of the preform rod, so that the preform rod is located at the core of the furnace, so that the preform rod can be heated evenly and the heating speed can be increased. At the same time, the preform rod is placed in the center of the furnace, which can also prevent the preform rod from sticking to the furnace wall after heating. The specific support frame has two hinged support rods to form a right-angle cantilever structure, wherein the second support rod can freely adjust the angle, and then the adjustment rod is used to support the second support rod. When the second support rod is adjusted, it can drive the preform rod placed thereon to be fine-tuned, so that the preform rod is aligned with the core of the furnace.

[0020] (2) The present application is provided with a lifting mechanism, which is convenient for placing the preform rods and lifting the preform rods to a suitable angle. The lifting mechanism consists of a bracket, a telescopic rod and a chain, all of which are assembled on the movable door frame. The specific operation process is: the chain is connected to the bracket, and the bracket is slidably connected to the movable door frame. A rotatable sprocket is provided on the top of the telescopic rod. When the telescopic rod rises, the sprocket is used to lift the chain. Since both ends of the chain are fixed, a certain pulling force will occur in the process of being subjected to the upward force. The chain will further rotate the sprocket through the pulling force to eliminate the pulling force. Since the bracket is slidably connected, the chain will move from one end to the other end to achieve ascent. When descending, the weight of the bracket drives the chain to reset.

[0021] (3) In order to ensure that the speed of feeding the preform rods into the furnace is uniform, so that the preform rods are heated evenly and the wire drawing effect is good, the present application is provided with a pushing structure, which uses the pushing structure to feed the preform rods into the furnace in sections for heating, and maintains a uniform speed during the feeding process. The process is as follows: the right-angle plates used to install the support frame are respectively installed on two screws, and the threads on the two screws are in opposite directions, and the two screws are each provided with a separate motor for driving, so the right-angle plates can move independently. When the preform rod is placed on the support frame, one of the right-angle plates remains stationary and the other right-angle plate moves toward the furnace mouth. The preform rod on the support frame will be driven to move toward the furnace mouth, thereby feeding the preform rod into the furnace for heating. In this process, in order to prevent slipping, a sliding roller is provided on the slide of the support rod. The sliding roller is provided with a friction protrusion to increase the friction between the support frame and the preform rod to ensure the speed of the preform rod entering the furnace and prevent slipping.

[0022] (4) At the same time, due to the excessive load on the upper part of the device, a grounding arm is provided at the bottom of the movable door frame to increase the contact area between the device and the ground. The grounding arm can also increase the deadweight of the movable door frame to prevent it from tipping over. The auxiliary wheel at the rear end of the grounding arm can be moved when the device is unloaded, thereby being pushed to the vicinity of the heating furnace to complete the lifting and adjustment of the finished optical fiber rod during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0024] Figure 1 This is the overall structural diagram of the lifting frame.

[0025] Figure 2 This is a side view of the lifting frame.

[0026] Figure 3 This is the structural diagram of the lifting load mechanism.

[0027] Figure 4 It is the rear view of the lifting load mechanism.

[0028] Figure 5 This is the structural diagram of the lifting components.

[0029] Figure 6 This is a diagram of the bracket structure.

[0030] Figure 7 This is the structural diagram of the support frame.

[0031] Figure 8 This is a diagram of the slide structure.

[0032] Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0033] Figure 10 Enlarged view of the sliding roller.

[0034] The correspondence between the labels and component names in the figure is as follows: 100, movable door frame; 101, grounding arm; 101a, auxiliary wheel; 102, telescopic rod; 102a, notch; 102a-1, sprocket; 103, chain; 104, bracket; 104a, base plate; 104a-1, motor; 104a-2, screw; 104a-2a, right-angle plate; 104b, connecting ring; 200, support frame; 201, first support rod; 202, second support rod; 203, adjusting rod; 204, slide; 204a, bridge plate; 204a-1, connecting plate; 204a-2, accommodating groove; 204a-3, sliding roller; 204a-3a, rotating shaft; 204a-3b, friction protrusion. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0038] Example 1

[0039] Reference Figure 1-5 , which is Example 1 of the present invention, provides an optical fiber finished rod lifting stand, which can solve the shortcomings of the prior art that the preform rods are difficult to feed into the furnace due to the excessive height of the furnace mouth and the device loses balance and is prone to tipping over due to height adjustment. The lifting stand includes a movable door frame 100 for carrying all other components of the entire lifting stand, and a bracket 104 for carrying the optical fiber preform rods and driving them to be lifted and lowered is slidably connected to the movable door frame 100, and a chain 103 is installed on the bracket 104 that can pull up the bracket 104 and keep it stationary, and a telescopic rod 102 is installed in the movable door frame 100 to enable the bracket 104 to be lifted and lowered on the movable door frame 100, and the chain 103 is overlapped on the telescopic end of the telescopic rod 102, and also includes a support frame 200 for conveying the preform rods, which is transferred to the front end of the bracket 104.

[0040] A notch 102a is provided at the top of the output end of the telescopic rod 102, and a sprocket 102a-1 is assembled in the notch 102a using a rotating shaft to drive the chain 103 to move, thereby causing the bracket 104 to be raised and lowered, and the chain 103 is engaged with the sprocket 102a-1; a grounding arm 101 for maintaining stability is provided at the bottom of the movable door frame 100, and an auxiliary wheel 101a is provided at the rear top end of the grounding arm 101 to facilitate the movement of the frame.

[0041] In this embodiment, the lifting mechanism consists of a bracket 104, a telescopic rod 102 and a chain 103, all of which are assembled on the movable door frame 100. The chain 103 is connected to the bracket 104, and the bracket 104 is slidably connected to the movable door frame 100. When the telescopic rod 102 rises, the sprocket 102a-1 is used to lift the chain 103. Since both ends of the chain 103 are fixed, a certain pulling force will be generated in the process of being subjected to the upward force. Further, the chain 103 will rotate the sprocket 102a-1 through the pulling force, thereby eliminating the pulling force. Since the bracket 104 is slidably connected, the chain 103 will move from one end to the other end to achieve ascent. When descending, the weight of the bracket 104 drives the chain 103 to reset.

[0042] Example 2

[0043] Reference Figure 7 , which is Example 2 of the present invention. During the process of processing preform rods into finished rods, heating and drawing are required. Due to the length of the preform rods, the position of the lead rods will deviate when they are sent to the furnace for heating. When the position of the lead rods deviates, the furnace core tube can only be cooled down and then the position of the furnace core tube can be moved to make the position of the lead rods located at the center of the furnace core tube. This operation requires waiting for cooling down, which wastes time and delays heating. This embodiment can solve the above problem by adjusting the angle at which the preform rods enter the furnace.

[0044] The support frame 200 includes a first support rod 201 and a second support rod 202, and the first support rod 201 and the second support rod 202 are hinged, so that the second support rod 202 can rotate at an angle with the first support rod 201 as the base point; the support frame 200 also includes an adjustment rod 203 for support pinned to the first support rod 201, and the upper end of the adjustment rod 203 is provided with a clamping plate for clamping on the second support rod 202; the clamping plate is used to make the adjustment rod 203 dock with any point on the second support rod 202, thereby supporting the second support rod 202.

[0045] In this embodiment, the first support rod 201 and the second support rod 202 are hinged to form a right-angle cantilever structure, wherein the angle of the second support rod 202 can be freely adjusted, and the adjustment rod 203 is used to support the second support rod 202. When the second support rod 202 is adjusted, it can drive the preform rod placed thereon to be fine-tuned so that the preform rod is aligned with the furnace core.

[0046] Example 3

[0047] Refer to the figure Figure 6 、 Figure 8 and Figure 9 , which is Example 3 of the present invention, this embodiment can solve the problem of feeding the preform rods into the heating furnace at a uniform speed. A receiving groove 204a-2 is opened at both ends of the slide 204, and a sliding roller 204a-3 is installed in the receiving groove 204a-2.

[0048] The slide 204 includes a bridge plate 204a for connection and a pair of connecting plates 204a-1 for supporting the preform rods, wherein the two ends of the bridge plate 204a are respectively connected to the center of the two connecting plates 204a-1 to form a whole, and the receiving grooves 204a-2 are opened at both ends of the connecting plates 204a-1, so that two preform rods can be transported synchronously when transporting the preform rods, while ensuring the balance of force; the two ends of the sliding roller 204a-3 are provided with a rotating shaft 204a-3a inserted into the inner wall of the receiving groove 204a-2, so that the sliding roller 204a-3 can rotate. In order to avoid bringing the preformed rod back when resetting during rod making, the surface of the sliding roller 204a-3 is arranged with a plurality of friction protrusions 204a-3b for increasing friction force. At the same time, the diameters of the two ends of the sliding roller 204a-3 are larger than the diameter of the middle part so that the preformed plate can be concentrated at the center of the sliding roller 204a-3; the friction protrusions 204a-3b are arranged in a matrix on the surface of the sliding roller 204a-3, and the friction protrusions 204a-3b have a cone-shaped structure. At the same time, the tops of the friction protrusions 204a-3b are bent in the same direction; the bracket 104 is composed of a substrate for combining other components. 104a, a screw 104a-2 for controlling the speed of conveying the preform rod, and a right-angle plate 104a-2a of a supporting component, wherein the right-angle plate 104a-2a is sleeved on the screw 104a-2, and there are two screws 104a-2 and two right-angle plates 104a-2a. At the same time, the support frame 200 is assembled on the right-angle plate 104a-2a; the two screws 104a-2 are respectively mounted on the two ends of the base plate 104a by bearings, and a partition is provided between the two screws 104a-2. Similarly, the screw 104a-2 is connected to the partition by a bearing, so that The two screws 104a-2 do not interfere with each other and move independently. At the same time, the threads of the two screws 104a-2 are set in opposite directions. Through the above design, the two screws 104a-2 can move independently, staggered, and synchronously. Further, the distance between the two right-angle plates 104a-2a can be adjusted, and one of the right-angle plates 104a-2a can be kept stationary while the other right-angle plate 104a-2a moves, thereby achieving the effect of conveying the preform rods. Motors 104a-1 are provided at both ends of the base plate 104a, respectively connected to the two screws 104a-2.

[0049] In this embodiment, first, one of the screw rods 104a-2 remains stationary, and the other screw rod 104a-2 is rotated by the motor 104a-1, thereby driving the right-angle plate 104a-2a adjusted thereon to move toward the heating furnace. At this time, the preform is placed on the support frame 200. During this process, the support frame 200 drags the preform toward the furnace due to the movement of the right-angle plate 104a-2a, thereby sending the preform into the heating furnace. Then, the right-angle plate 104a-2a, which initially stops moving, is rotated. It moves again to further feed the preform rod into the heating furnace. This is a feeding process. During the second feeding, the screw 104a-2 that moved first rotates in the opposite direction again, causing the right-angle plate 104a-2a to return to its initial position. In this process, since the preform rod is relatively heavy and overlaps on the sliding roller 204a-3, the sliding roller 204a-3 will rotate due to the force brought by the reset movement of the right-angle plate 104a-2a, thereby eliminating the friction between the sliding roller 204a-3 and the preform rod, and preventing the preform rod from being taken out of the furnace.

[0050] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of the function described herein, and is not only structurally equivalent but also equivalent structures. Without departing from the scope of the present invention, other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It should be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lifting stand for finished optical fiber rods, comprising a movable door frame (100), characterized in that: A bracket (104) is slidably connected to the movable door frame (100), and a chain (103) is assembled on the bracket (104). Meanwhile, a telescopic rod (102) is assembled in the movable door frame (100), and the chain (103) is overlapped on the telescopic end of the telescopic rod (102); The invention also includes a support frame (200) adapted to be mounted on the front end of the bracket (104), the support frame (200) including a first support rod (201) and a second support rod (202), wherein the first support rod (201) and the second support rod (202) are hinged, a slide (204) is mounted on the front end of the second support rod (202), and a receiving groove (204a-2) is provided at both ends of the slide (204), a sliding roller (204a-3) is mounted in the receiving groove (204a-2), and the support frame (200) also includes an adjustment rod (203) pinned to the first support rod (201), and the adjustment rod (203) The upper end of the sliding roller (204a-3) is provided with a clamping plate for clamping on the second support rod (202), and the two ends of the sliding roller (204a-3) are provided with a rotating shaft (204a-3a) inserted into the inner wall of the accommodating groove (204a-2), and the surface of the sliding roller (204a-3) is arranged with a plurality of friction protrusions (204a-3b), and the diameters of the two ends of the sliding roller (204a-3) are larger than the diameter of the middle part, and the friction protrusions (204a-3b) are arranged in a matrix on the surface of the sliding roller (204a-3), and the friction protrusions (204a-3b) have a conical structure, and the tops of the friction protrusions (204a-3b) are bent in the same direction.

2. The optical fiber finished rod lifting stand according to claim 1, characterized in that: The slide (204) comprises a bridge plate (204a) and a pair of connecting plates (204a-1), wherein the two ends of the bridge plate (204a) are respectively connected to the centers of the two connecting plates (204a-1), and the accommodating grooves (204a-2) are opened at the two ends of the connecting plates (204a-1).

3. The optical fiber finished rod lifting stand according to claim 1, characterized in that: The bracket (104) is composed of a base plate (104a), a screw rod (104a-2) and a right-angle plate (104a-2a), wherein the right-angle plate (104a-2a) is sleeved on the screw rod (104a-2), and there are two screw rods (104a-2) and two right-angle plates (104a-2a), and the support frame (200) is assembled on the right-angle plate (104a-2a).

4. The optical fiber finished rod lifting stand according to claim 3, characterized in that: Two screw rods (104a-2) are respectively mounted on both ends of a base plate (104a) using bearings, and a partition is provided between the two screw rods (104a-2). Similarly, the screw rods (104a-2) are connected to the partition using bearings, and the threads of the two screw rods (104a-2) are arranged in opposite directions. Motors (104a-1) are provided at both ends of the base plate (104a) and are respectively connected to the two screw rods (104a-2).

5. The optical fiber finished rod lifting stand according to claim 3, characterized in that: A connecting ring (104b) is further provided at the center of the upper surface of the base plate (104a), and one end of the chain (103) is connected to the connecting ring (104b), while the other end of the chain (103) is connected to a horizontal bar on the movable door frame (100).

6. The optical fiber finished rod lifting stand according to claim 1, characterized in that: A notch (102a) is provided at the top of the output end of the telescopic rod (102), and a sprocket (102a-1) is assembled in the notch (102a) using a rotating shaft, and a chain (103) is engaged with the sprocket (102a-1).

7. The optical fiber finished rod lifting stand according to claim 1, characterized in that: A grounding arm (101) for maintaining stability is provided at the bottom of the movable door frame (100), and an auxiliary wheel (101a) for facilitating the movement of the frame is provided at the rear top of the grounding arm (101).

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