Device for assembling preform

Abstract

The utility model relates to the technical field of optical fiber preform manufacturing, and provides a device for assembling a preform, which comprises a fixed seat, a clamping piece and a supporting piece, the clamping piece and the supporting piece are arranged on the fixed seat at intervals along a first direction, the clamping piece and the supporting piece are collinear, the clamping piece is used for clamping a core rod, and the supporting piece is used for supporting the core rod. The core rod extends towards the direction close to the supporting piece in the first direction. The supporting piece is used for supporting the sleeve, and the sleeve extends in the first direction; the first direction is consistent with the extension direction of the fixed seat; the supporting piece and / or the clamping piece can move in the second direction, so that the core rod and the sleeve are coaxial; the second direction is perpendicular to the fixed seat; the clamping piece can move towards the supporting piece in the first direction so that the core rod can be inserted into the sleeve. By adjusting the position of the supporting piece and / or the clamping piece, high-precision coaxial butt joint of the core rod and the sleeve is ensured, the inner wall of the sleeve can be prevented from being scratched, and the overall quality of a product is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber preform manufacturing, in particular to a device for assembling preforms. Background Art

[0002] In the optical fiber industry, the deposition cost of the preform core rod (hereinafter referred to as the core rod) significantly impacts overall production costs. To reduce deposition costs, increase single preform rod production capacity, and effectively control the ratio of core and cladding diameters, the core rod requires casing. The casing process is a critical step in preform manufacturing.

[0003] Currently, the sheathing process on a vertical sheathing machine typically involves inserting a core rod into a high-purity quartz glass sheath (hereinafter referred to as the sheath). After adjusting and securing the positions, the assembled core rod and sheath are then transferred to the vertical sheathing machine for sheathing. During this process, heating and negative pressure are applied to the tube, fusing the core rod and sheath into a single piece, forming an optical fiber preform.

[0004] The existing assembly method has no tooling or platform, and the operator needs to manually insert the core rod into the casing horizontally and slowly on a horizontal operating table. Due to factors such as the shaking of human arms, uneven force and speed, there is a risk of the core rod scratching the inner wall of the casing, resulting in poor bright spots of the preform rod behind the casing. For the assembly of long core rods and long casings, the existing technology takes up a large space, the operation is cumbersome, the assembly takes a long time, and it is more likely to cause scratches on the inner wall of the casing. In addition, the existing assembly method relies entirely on manual operation, has no support points, and is inconvenient to operate. After assembly, the core rod is easily eccentric and cannot be located in the center of the casing, resulting in poor concentricity of the preform rod behind the casing. Utility Model Content

[0005] The utility model provides a device for assembling preform rods, which solves the problems in the prior art of manual assembly, inconvenience in operation, poor concentricity of the preform rods, and easy scratching of the core rod inside the sleeve during assembly, resulting in poor bright spots on the preform rods.

[0006] The utility model provides a device for assembling prefabricated rod, include: fixed base, clamping piece and support piece, clamping piece with support piece is collinear along first direction interval installation in fixed base, clamping piece is used for clamping core rod, core rod extends along first direction towards the direction of close to support piece, support piece is used for supporting sleeve, sleeve extends along first direction, first direction is identical with the extension direction of fixed base, support piece and / or clamping piece can move along second direction to make core rod with sleeve coaxial, second direction is perpendicular to fixed base, clamping piece can move along first direction towards the direction of support piece to make core rod insert in sleeve.

[0007] According to the device for assembling prefabricated rod provided by the utility model, the support piece includes a first support piece and a second support piece, the first support piece and the second support piece are arranged at intervals along the first direction, and the first support piece and / or the second support piece can move along the first direction.

[0008] According to the device for assembling prefabricated rod provided by the utility model, the first support piece and the second support piece each include a sliding part, an adjusting part and a support limiting part, the sliding part is slidably connected to the fixed base, the support limiting part is liftable installed on the top of the sliding part through the adjusting part, and the support limiting part is used for limiting the position of the sleeve.

[0009] According to the device for assembling prefabricated rod provided by the utility model, the adjusting part includes a threaded cylinder provided with internal threads and a screw rod, the screw rod is threadedly connected with the threaded cylinder, the top of the screw rod is connected with the support limiting part, and the bottom of the threaded cylinder is connected with the sliding part.

[0010] According to the device for assembling prefabricated rod provided by the utility model, a limiting groove is arranged on the support limiting part.

[0011] According to the device for assembling prefabricated rod provided by the utility model, the fixed base is provided with a sliding rail, the sliding rail is arranged to extend along the first direction, and the support piece and the clamping piece are slidably connected to the sliding rail.

[0012] According to the device for assembling prefabricated rod provided by the utility model, a driving piece is further included, and the driving piece is connected with the clamping piece.

[0013] According to the device for assembling prefabricated rods, the driving part comprises a connecting rod, a gear and a hand wheel, one end of the connecting rod is rotationally connected with the clamping part, and the other end of the connecting rod is connected with the gear; the hand wheel is fixedly connected with the gear; the fixed seat is provided with a toothed rail, the toothed rail is arranged in extension along the first direction, and the gear is engaged with the toothed rail.

[0014] According to the device for assembling prefabricated rods, the clamping part comprises a fixed part and at least three clamping parts, the fixed part is slidingly connected to the fixed seat, the fixed part is provided with a through hole in penetration, and the through hole is used for accommodating the core rod; at least three clamping parts are arranged in a circumferential direction of the through hole at intervals, and at least three clamping parts are synchronously moved relative to each other, so that the core rod is clamped in the center of the through hole.

[0015] According to the device for assembling prefabricated rods, the device further comprises a moving part, and the moving part is arranged at the bottom of the fixed seat.

[0016] The device for assembling prefabricated rods provided by the utility model can ensure high-precision coaxial butt joint of the core rod and the sleeve by adjusting the positions of the supporting part and / or the clamping part, can avoid scratching the inner wall of the sleeve, and further improves the overall quality of products; the device is convenient to operate, can significantly shorten the assembly time, and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0018] Figure 1 It is one of the structure schematic views of the device for assembling prefabricated rods provided by the utility model;

[0019] Figure 2 It is the second device for assembling prefabricated rods provided by the utility model;

[0020] Figure 3 It is the front view of the device for assembling prefabricated rods provided by the utility model;

[0021] Figure 4 It is the top view of the device for assembling prefabricated rods provided by the utility model;

[0022] Reference signs:

[0023] 1, fixed seat; 11, slide rail; 12, rack rail; 2, clamping piece; 21, fixed part; 22, clamping part; 3, support piece; 31, first support piece; 32, second support piece; 321, sliding part; 322, adjusting part; 3221, threaded cylinder; 3222, screw; 323, support limiting part; 4, driving piece; 41, connecting rod; 42, gear; 43, hand wheel; 5, moving piece; 6, core rod; 7, sleeve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described below in conjunction with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0027] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0028] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0029] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of the specific examples in the following are described. Of course, they are only examples and are not intended to limit the present application. In addition, the present application can repeatedly refer to the same reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity, and does not indicate a relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0030] The following description is made in connection with Figures 1-4 The device for assembling preform rods of the present application is described below.

[0031] The device for assembling preform rods provided by the embodiments of the present application comprises a fixing seat 1, a clamping piece 2 and a supporting piece 3. The clamping piece 2 and the supporting piece 3 are installed along a first direction on the fixing seat 1, wherein the first direction is consistent with the extension direction of the fixing seat 1. The clamping piece 2 is collinear with the supporting piece 3. The clamping piece 2 is used to clamp a core rod 6, and the extension direction of the core rod 6 is consistent with the first direction, extending towards the direction close to the supporting piece 3. The supporting piece 3 is used to support a sleeve 7, and the extension direction of the sleeve 7 is consistent with the first direction, extending towards the direction close to the clamping piece 2.

[0032] In one embodiment, the support 3 is movable along a second direction, which is perpendicular to the fixed base 1, to adjust the height of the support 3 so that the sleeve 7 on the support 3 is coaxial with the mandrel 6 clamped by the clamping member 2. For example, the bottom of the support 3 is threadedly connected to the fixed base 1, and the height of the support 3 is adjusted by adjusting the depth of the thread to ensure that the sleeve 7 is coaxially aligned with the mandrel 6, avoiding errors in the assembly process due to inconsistent height. The support 3 can also be a telescopic member. The lifting movement of the support 3 can be adjusted by an electric drive system or a manual rotating device. In another embodiment, the clamping member 2 is movable along a second direction, which is perpendicular to the fixed base 1, to adjust the height of the clamping member 2 so that the mandrel 6 on the clamping member 2 is coaxial with the mandrel 6 on the support 3. The clamping member 2 can be lifted and connected to the fixed base 1, for example, the bottom of the clamping member 2 is threadedly connected to the fixed base 1, and the height of the clamping member 2 is adjusted by adjusting the depth of the thread to align the mandrel 6 coaxially with the sleeve 7. The clamping member 2 can also be a telescopic member. In yet another embodiment, both the support 3 and the clamping member 2 are movable along a second direction to accurately adjust the coaxial alignment of the mandrel 6 and the sleeve 7, thereby ensuring high precision and high concentricity in the assembly process.

[0033] Further, the clamping member 2 is movable along a first direction towards the support 3, for example, the clamping member 2 is slidingly connected to the fixed base 1; by adjusting the position of the clamping member 2, the mandrel 6 is stably inserted into the sleeve 7, and during the movement, the sleeve 7 is coaxial with the mandrel 6, avoiding unnecessary deviation during assembly.

[0034] During assembly, the sleeve 7 is placed horizontally on the support 3, and the support 3 is provided with a suitable support surface or positioning member to ensure the stability of the sleeve 7 on the support 3. The mandrel 6 is clamped in the clamping member 2, and the clamping force of the clamping member 2 is adjusted according to actual requirements to ensure that the mandrel 6 does not move during clamping. By driving the support and / or the clamping member 2 to move along the second direction, the mandrel 6 is kept coaxial with the sleeve 7. The clamping member 2 drives the mandrel 6 to move along the first direction towards the support 3, and gradually inserts the mandrel 6 into the sleeve 7. When the mandrel 6 is completely inserted into the sleeve 7, the coaxiality of the mandrel 6 and the sleeve 7 reaches the design standard, and the assembly is completed.

[0035] The device for assembling a prefabricated rod provided by the embodiments of the present application can accurately adjust the position of the support and / or the clamping member 2, ensure high-precision coaxial alignment of the mandrel 6 and the sleeve 7, and avoid scratching the inner wall of the sleeve 7, thereby improving the overall quality of the product. The device is easy to operate, can significantly shorten the assembly time, and improve the work efficiency.

[0036] In addition, compared with manual assembly, the safety is high, and the risk of injury during manual assembly by the operator is avoided.

[0037] The supporting members 3 in the embodiment of the present invention can be multiple, and the multiple supporting members 3 are spaced apart along the first direction to support the sleeve. Figure 1 and Figure 2 As shown, the support member 3 includes a first support member 31 and a second support member 32, and the first support member 31 and the second support member 32 are spaced apart along the first direction. It should be noted that the first support member 31 and the second support member 32 are collinear. The first support member 31 and / or the second support member 32 can move on the fixed seat 1 along the first direction to adjust the distance between the first support member 31 and the second support member 32 to adapt to core rods 6 and sleeves 7 of different sizes, with high flexibility. Compared with the prior art, space is saved. In addition, the distance between the clamping member 2 and the support member 3 can also be adjusted by adjusting the position of the first support member 31 and the second support member 32. In one embodiment, a slide rail 11 is provided on the fixed seat 1, and the first support member 31 and / or the second support member 32 are slidably connected to the slide rail 11.

[0038] The first support member 31 and the second support member 32 both include a sliding portion 321, an adjusting portion 322, and a support limit portion 323. The sliding portion 321 is slidably connected to the fixed seat 1 and can move along a first direction. The support limit portion 323 can be raised and lowered on the top of the sliding portion 321 through the adjusting portion 322. The support limit portion 323 is used to limit the position of the sleeve 7 to ensure that the sleeve 7 remains stable during the assembly process. For example, the side wall of the sliding portion 321 is provided with a slide rail 11, and the slide rail 11 extends along the height direction of the sliding portion 321. The adjusting portion 322 can move along the extension direction of the slide rail 11 to adjust the height of the support limit portion 323, thereby adjusting the height of the sleeve 7. It should be noted that after the adjusting portion 322 slides to the target position, it can be locked. The specific structure is not limited. The adjusting portion 322 can also be a telescopic member.

[0039] like Figure 2 As shown, the adjustment portion 322 includes a threaded barrel 3221 and a screw 3222. The top of the screw 3222 is connected to the bottom of the support and limit portion 323, while the bottom of the threaded barrel 3221 is connected to the sliding portion 321. The threaded barrel 3221 is internally threaded, and the screw 3222 is threadedly connected to the threaded barrel 3221. By adjusting the depth of the screw 3222, the overall height of the adjustment portion 322 is adjusted, thereby adjusting the height of the sleeve 7 located on the support and limit portion 323, so that it is coaxial with the core rod 6.

[0040] The support limiting part 323 is mainly used for limiting the position of the sleeve 7 and ensuring that the sleeve 7 is stably kept at a target position. The support limiting part 323 is provided with a limiting groove in which the sleeve 7 is embedded. In order to achieve better limiting, one of the limiting groove and the outer wall surface of the sleeve 7 is provided with a magnetic member, and the other is provided with a magnetic attraction member, and stable fixation is achieved by magnetic attraction. In another embodiment, a pressing member is arranged above the limiting groove, and the position of the sleeve 7 can be limited by the pressing member when the sleeve 7 is arranged in the limiting groove. The pressing member is rotatably connected to the top surface of the support limiting part 323, and the pressing member is located above the limiting groove or away from the upper side of the limiting groove by rotating.

[0041] In the embodiment of the utility model, the fixed seat 1 is provided with a slide rail 11, the slide rail 11 is arranged along the first direction, and the support member 3 (including the first support member 31 and the second support member 32) and the clamping member 2 are slidably connected to the slide rail 11. Under the drive of external force, the support member 3 and the clamping member 2 can move along the slide rail 11 to adjust the distance between the support member 3 and the clamping member 2. Under the drive of external force, the first support member 31 and the second support member 32 can move along the direction of the slide rail 11 to adjust the distance between them to adapt to different sizes of the sleeve 7, and the compatibility is strong.

[0042] In order to realize automatic assembly, the device for assembling the prefabricated rod provided in the embodiment of the utility model further includes a driving member 4, the driving member 4 is connected with the clamping member 2, and the driving member 4 is used for driving the clamping member 2 to move along the direction of the first direction towards the support member so that the mandrel 6 is inserted into the sleeve 7. Through the action of the driving member 4, automatic positioning and assembly can be realized, manual intervention is reduced, and assembly efficiency and precision are improved.

[0043] In one embodiment, the driving member 4 is a driving cylinder, the driving end of the driving cylinder is connected with the clamping member 2, the extension and retraction movement of the piston rod is driven through air pressure, so that the clamping member 2 can move in a specified track, thereby driving the clamping member 2 (the mandrel 6) to the target position, and realizing accurate insertion of the mandrel 6 and the sleeve 7. Further, the driving member 4 is electrically connected with a control member, the operation of the driving member 4 can be controlled through the control member, and accurate control is realized.

[0044] In another embodiment, the driving member 4 is a mechanical transmission structure. The driving member 4 includes a connecting rod 41, a gear 42 and a hand wheel 43. Figure 2 and Figure 4 As shown in the drawings, one end of the connecting rod 41 is rotatably connected with the clamping member 2, the other end of the connecting rod 41 is connected with the gear 42, and the hand wheel 43 is fixedly connected with the gear 42. The fixed seat 1 is provided with a toothed rail 12, the toothed rail 12 is arranged along the first direction, the gear 42 is engaged with the toothed rail 12, and the gear 42 transmits motion through the engagement with the toothed rail 12.

[0045] In the adjusting process, the gear 42 is rotated by applying an external force to the gear 42 through the hand wheel 43, the gear 42 is moved along the extension direction of the toothed rail 12, and the clamping piece 2 is moved along the extension direction of the slide rail 11, so that the clamping piece 2 (the core rod 6) is moved to a target position, and accurate insertion of the core rod 6 and the sleeve 7 is realized. In the case where the clamping piece 2 moves to the target position, the meshing of the gear 42 and the toothed rail 12 can realize locking without other locking pieces.

[0046] In this embodiment, the operator can accurately control the position of the clamping piece 2 during assembly by manually operating the hand wheel 43. The transmission system of the gear 42 and the toothed rail 12 can convert rotary motion into linear motion, ensuring high precision in the core rod 6 insertion process. The operation mode of the hand wheel 43 is easy to master and suitable for manual control and detailed adjustment. Compared with a pneumatic or electric drive system, manual control does not require an external air source or power supply, and has a certain independence. Especially in some environments where external energy sources are not convenient to access, manual drive provides a convenient solution.

[0047] As shown in Figure 1 and Figure 3 The clamping piece 2 includes a fixed part 21 and at least three clamping parts 22, which can be four, six, seven, etc. The fixed part 21 is slidingly connected to the fixed seat 1. The upper part of the fixed part 21 is provided with a through hole for accommodating the core rod 6. The at least three clamping parts 22 are arranged in a circumferential direction of the through hole, and each clamping part 22 is connected with a driving mechanism, which can synchronously drive the at least three clamping parts 22 to move relative to each other to clamp the core rod 6 in the center of the through hole. After assembly is completed, the driving mechanism can be controlled to drive the at least three clamping parts 22 to move away from each other and separate from the core rod 6. It should be noted that the at least three clamping parts 22 are synchronously operated, and the operating parameters are equal, so that the core rod 6 is prevented from deviating.

[0048] The device for assembling the prefabricated rod also includes a moving piece 5 arranged at the bottom of the fixed seat 1, which can adjust the position of the fixed seat 1 according to user needs. The moving piece 5 can be a lockable roller, which reduces the friction with the ground and facilitates the user to move the entire device. After the device is moved to a target position, it can be locked to prevent movement and avoid affecting assembly. In an embodiment, the lockable rollers are four, and the four lockable rollers are arranged on the bottom surface of the fixed seat 1.

[0049] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A device for assembling preform rods, characterized in that include: A fixing seat, a clamping member, and a supporting member, wherein the clamping member and the supporting member are installed on the fixing seat at intervals along a first direction, the clamping member and the supporting member are collinear, the clamping member is used to clamp a core rod, and the core rod extends along the first direction toward the supporting member; the supporting member is used to support a sleeve, and the sleeve extends along the first direction; the first direction is consistent with the extension direction of the fixing seat; The support member and / or the clamping member can be moved along a second direction so as to make the core rod coaxial with the sleeve; The second direction is perpendicular to the fixing seat; the clamping member can move along the first direction toward the supporting member so that the core rod is inserted into the sleeve.

2. The apparatus for assembling preform rods according to claim 1, wherein: The support member includes a first support member and a second support member, the first support member and the second support member are spaced apart along the first direction, and the first support member and / or the second support member are movable along the first direction.

3. The apparatus for assembling preform rods according to claim 2, wherein: The first support member and the second support member both include: a sliding part, an adjusting part and a support limiting part. The sliding part is slidably connected to the fixing seat. The support limiting part can be lifted and lowered on the top of the sliding part through the adjusting part. The support limiting part is used to limit the position of the sleeve.

4. The apparatus for assembling preform rods according to claim 3, wherein: The adjusting portion includes a threaded barrel with internal threads and a screw rod, the screw rod is threadedly connected to the threaded barrel, the top of the screw rod is connected to the supporting and limiting portion, and the bottom of the threaded barrel is connected to the sliding portion.

5. The apparatus for assembling preform rods according to claim 3, wherein: The support limiting portion is provided with a limiting groove.

6. The apparatus for assembling preform rods according to claim 1, wherein: The fixing seat is provided with a slide rail, and the slide rail is extended along the first direction. The supporting member and the clamping member are respectively slidably connected to the slide rail.

7. The apparatus for assembling preform rods according to claim 1, wherein: It also includes a driving member connected to the clamping member.

8. The apparatus for assembling preform rods according to claim 7, wherein: The driving member includes a connecting rod, a gear and a handwheel, one end of the connecting rod is rotatably connected to the clamping member, and the other end of the connecting rod is connected to the gear; the handwheel is fixedly connected to the gear; the fixed seat is provided with a rack, the rack extends along the first direction, and the gear is engaged with the rack.

9. The apparatus for assembling preform rods according to claim 1, wherein: The clamping member includes a fixing portion and at least three clamping portions, the fixing portion is slidably connected to the fixing seat, the fixing portion is provided with a through hole for accommodating the core rod; at least three of the clamping portions are arranged at intervals along the circumference of the through hole, and at least three of the clamping portions move synchronously relative to each other so that the core rod is clamped in the center of the through hole.

10. The apparatus for assembling preform rods according to claim 1, wherein: It also includes a moving part, which is arranged at the bottom of the fixing seat.

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