A tangent line upper die device based on a polarization maintaining optical fiber drawing process

Abstract

The application discloses a tangent line upper die device based on a polarization maintaining optical fiber drawing process and relates to the technical field of polarization maintaining optical fibers.The application comprises a machine base, a cutting mechanism, a material collecting mechanism and an upper die mechanism.The machine base comprises a back plate, and the side edge and the top edge of the front side of the back plate are respectively provided with a vertical plate and a top plate.The bottom part of the vertical plate is provided with a bottom plate, and the outer side of the upper part of the vertical plate is fixed with a die seat through two support columns.The top part of the die seat is open, and the bottom surface is a circular ring structure.A circle opening die is gap-fitted in the die seat.The application can be used for the rapid cutting of fine filaments through the cooperation of the telescopic hopper and the cutting mechanism, and the lifting of the circle opening die through the upper die mechanism, while keeping the position of the circle opening die under the discharge port of the heating furnace, without the setting of clamping structures or fasteners, which is beneficial to positioning and does not require the assistance of staff, and can automatically cut and die the drawing, with high efficiency and accuracy.

Description

Technical Field

[0001] This invention belongs to the field of polarization-maintaining optical fiber technology, and in particular relates to a tangent die device based on the polarization-maintaining optical fiber drawing process. Background Technology

[0002] In the existing polarization-maintaining fiber drawing process, the preform is vertically clamped at a high position. After the bottom end of the preform is moved into the heating furnace, it forms a filament. The outer diameter of the filament end is too large and exceeds the standard. After exiting the furnace, the filament end is cut off. The cut filament passes through the coiling mold. The coiling mold is installed at the discharge port of the heating furnace. After passing through the coiling mold, the filament is connected to a guiding glass ball. The guiding filament passes through the coating area and the curing area in sequence and is guided to the winding area.

[0003] In this process, the cutting and installation of the filament end and the ring mold are all done manually by workers, resulting in a low degree of automation. The cutting process is difficult to operate, and the manual movement of the ring mold, which requires the filament to pass through, makes it difficult to position and connect the mold to the furnace opening. During the connection, the mold may collide with the furnace opening installation point, affecting its lifespan. In addition, the connection between the mold and the furnace opening requires rotating the mold at a certain angle to achieve a snap-fit ​​or using fasteners, which is not conducive to operation. Furthermore, the operation area is too close to the heating furnace, which poses a safety risk. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting die device based on the polarization-maintaining fiber drawing process. The device can be used for rapid cutting of fine wires through the cooperation of a telescopic hopper and a cutting mechanism. The upper die mechanism can be used to lift the bead die while keeping the bead die in the position of the heating furnace discharge port. No clamping structure or fasteners are required, which is beneficial for positioning and does not require the assistance of workers. It can automatically perform wire cutting and die mounting with high efficiency and accuracy.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a cutting die device based on the polarization-maintaining fiber drawing process, comprising a base, a cutting mechanism, a receiving mechanism, and an upper die mechanism;

[0007] The machine base includes a back plate, and a vertical plate and a top plate are respectively provided on the front side and top edge of the back plate. A bottom plate is provided on the outer side of the bottom of the vertical plate, and a mold base is fixed to the upper part of the outer side of the vertical plate by two pillars.

[0008] The mold base has an open top and a circular bottom structure. The mold base has a clearance opening near the vertical plate. The mold base has a ring-shaped mold with a clearance fit inside. The ring-shaped mold has several positioning holes.

[0009] The upper mold mechanism includes a first cylinder, which is vertically fixed to the top of the base plate and located below the two pillars. The output end of the first cylinder is fixed with a support ring through a connecting rod and a support member. The connecting rod is located directly below the clearance opening, and the support ring is located directly below the ring mold and has a positioning head at the top that cooperates with the positioning port.

[0010] The receiving mechanism includes a hopper, a second cylinder, and a receiving box;

[0011] The second cylinder is horizontally fixed to the top of the top plate and facing the mold base. The hopper is fixed to the output end of the second cylinder. The receiving box is fixed to the rear side of the back plate. The rear side of the hopper is open and extends to the top of the receiving box.

[0012] The cutting mechanism includes a set of symmetrically arranged cutting cylinders. The two cutting cylinders are fixed to the top of the hopper by a U-shaped seat. The U-shaped seat is parallel to the second cylinder. The output ends of the two cutting cylinders are provided with mutually cooperating blades.

[0013] Furthermore, a mounting base is provided on the side of the back plate away from the vertical plate, and the mounting base is provided with several mounting holes.

[0014] Furthermore, a reinforcing mesh is fixed to the front side of the back plate. The reinforcing mesh is fixed to the inner wall of the vertical plate, the top plate, and the mounting base. The reinforcing mesh is composed of several plates.

[0015] Furthermore, the support member is a ring-shaped structure, and the support member is fixed to the bottom surface of the support ring by several arc-shaped clips. The connecting rod is fixed between the support member and the output end of the first cylinder.

[0016] Furthermore, the outer diameter of the support ring is smaller than the inner diameter of the central hole on the bottom surface of the mold base, and the inner diameter of the support ring is larger than the thread passage at the center of the ring mold shaft.

[0017] Furthermore, a clearance zone is formed between a group of the aforementioned pillars, with the first cylinder and connecting rod located directly below the clearance zone.

[0018] Furthermore, the bottom of the hopper is inclined, and the front edge of the receiving box is provided with an inclined side, and the bottom surface of the hopper slides along the inclined side.

[0019] Furthermore, the top of the receiving box is open, and the bottom of the receiving box is provided with a guide slope, which is located on the rear side of the mold base.

[0020] Furthermore, the housing portion of the second cylinder occupies the area of ​​the top plate away from the hopper, and the area of ​​the top plate away from the second cylinder forms a buffer zone that cooperates with the hopper.

[0021] The present invention has the following beneficial effects:

[0022] 1. This invention utilizes a retractable hopper and a cutting mechanism for rapid cutting of fine wires. After cutting, the hopper can be quickly retracted without affecting the descent of the wires or the positioning of the coiling die. The upper die mechanism can be used to lift the coiling die while maintaining its position at the furnace discharge port. No clamping structure or fasteners are required, which facilitates positioning and eliminates the need for operator assistance. The invention can automatically cut the wires and place them on the die, achieving high efficiency and accuracy.

[0023] 2. This invention, through the setting of a long receiving box and the combination of a retractable and sliding hopper, can collect a large number of end pieces. At the same time, the design of the inclined side can support the hopper and ensure its stability.

[0024] 3. This invention integrates the cutting and upper mold into one unit, which can improve the stability between the parts and facilitate installation and transportation. At the same time, it occupies less space and avoids the problem of the small furnace bottom area being difficult to install.

[0025] 4. The present invention, through the design of the mold base, can position and temporarily store the ring mold, adapting to the use of the upper mold mechanism, and through the design of the clearance opening, avoids interference problems with the upper mold mechanism, ensuring the use effect of the upper mold mechanism.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the tangent die device based on the polarization-maintaining fiber drawing process of the present invention;

[0029] Figure 2 This is a schematic diagram of the upper mold mechanism;

[0030] Figure 3 This is a structural diagram of the receiving box;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Base, 2-Cutting mechanism, 3-Receiving mechanism, 4-Upper mold mechanism, 5-Ring mold, 101-Back plate, 102-Vertical plate, 103-Top plate, 104-Bottom plate, 105-Support column, 106-Mold base, 107-Leaving opening, 108-Mounting base, 109-Reinforcing mesh, 110-Buffer area, 201-Cutter cylinder, 202-U-shaped seat, 203-Cutter body, 301-Hopper, 302-Second cylinder, 303-Receiving box, 304-Bevel, 305-Guiding bevel, 401-First cylinder, 402-Connecting rod, 403-Support component, 404-Support ring, 405-Positioning head, 406-Arc-shaped clip. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-3 As shown, the present invention is a cutting die device based on the polarization-maintaining fiber drawing process, including a base 1, a cutting mechanism 2, a receiving mechanism 3 and an upper die mechanism 4.

[0035] The machine base 1 includes a back plate 101. The front side and top edge of the back plate 101 are respectively provided with a vertical plate 102 and a top plate 103. The bottom outer side of the vertical plate 102 is provided with a bottom plate 104. The upper part of the outer side of the vertical plate 102 is fixed with a mold base 106 by two pillars 105.

[0036] The top of the mold base 106 is open and the bottom surface is a circular structure. The mold base 106 has a clearance opening 107 near the vertical plate 102. The mold base 106 has a ring mold 5 with clearance fitting inside. The ring mold 5 has several positioning holes.

[0037] The upper mold mechanism 4 includes a first cylinder 401, which is vertically fixed to the top of the base plate 104 and located below the two pillars 105. The output end of the first cylinder 401 is fixed with a support ring 404 through a connecting rod 402 and a support member 403. The connecting rod 402 is located directly below the clearance opening 107, and the support ring 404 is located directly below the ring mold 5 and has a positioning head 405 at the top that cooperates with the positioning port.

[0038] The receiving mechanism 3 includes a hopper 301, a second cylinder 302, and a receiving box 303;

[0039] The second cylinder 302 is horizontally fixed to the top of the top plate 103 and faces the mold base 106. The hopper 301 is fixed to the output end of the second cylinder 302. The receiving box 303 is fixed to the rear side of the back plate 101. The rear side of the hopper 301 is open and extends to the top of the receiving box 303.

[0040] The cutting mechanism 2 includes a set of symmetrically arranged cutting cylinders 201. The two cutting cylinders 201 are fixed to the top of the hopper 301 by a U-shaped seat 202. The U-shaped seat 202 is parallel to the second cylinder 302. The output ends of the two cutting cylinders 201 are provided with mutually cooperating blades 203.

[0041] Among them, such as Figure 1 As shown, a mounting base 108 is provided on the side of the back plate 101 away from the vertical plate 102, and the mounting base 108 is provided with several mounting holes.

[0042] Among them, such as Figure 1-2 As shown, a reinforcing mesh 109 is fixed to the front side of the back plate 101. The reinforcing mesh 109 is fixed to the inner wall of the vertical plate 102, the top plate 103 and the mounting base 108. The reinforcing mesh 109 is composed of several plates.

[0043] Among them, such as Figure 1-2 As shown, the support member 403 has a ring-shaped structure. The support member 403 is fixed to the bottom surface of the support ring 404 by several arc-shaped clips 406. The connecting rod 402 is fixed between the support member 403 and the output end of the first cylinder 401.

[0044] Among them, the outer diameter of the support ring 404 is smaller than the inner diameter of the central hole of the bottom part of the mold base 106, and the inner diameter of the support ring 404 is larger than the thread passage at the axis of the ring mold 5.

[0045] Among them, such as Figure 1-2 As shown, a clearance zone is formed between a group of support pillars 105, and the first cylinder 401 and the connecting rod 402 are located directly below the clearance zone.

[0046] Among them, such as Figure 1 and Figure 3 As shown, the bottom of the hopper 301 is inclined, and the front edge of the receiving box 303 is provided with an inclined side 304. The bottom surface of the hopper 301 slides along the inclined side 304.

[0047] Among them, such as Figure 1 and Figure 3 As shown, the top of the receiving box 303 is open, and the bottom of the receiving box 303 is provided with a guide slope 305, which is located on the rear side of the mold base 106.

[0048] Among them, such as Figure 1As shown, the housing portion of the second cylinder 302 occupies the area of ​​the top plate 103 away from the hopper 301, and the area of ​​the top plate 103 away from the second cylinder 302 forms a buffer area 110 that cooperates with the hopper 301.

[0049] The working principle of this invention is as follows: After the bottom end of the preformed rod is heated in the heating furnace, it forms a fine wire. The fine wire is discharged from the bottom end of the heating furnace and passes through the area between the two blades 203. The cutting cylinder 201 controls the relative movement of the two blades 203 to cut the wire. The large-diameter wire end is cut off by the blade 203. The cut wire end is guided from the hopper 301 to the receiving box 303. At the same time, the second cylinder 302 controls the hopper 301 and the cutting mechanism 2 to retract to the position of the buffer area 110. The wire passes through the wire passage of the ring mold 5, the center hole of the bottom surface of the mold base 106 and the center hole of the support ring 404 and continues to descend towards the coating area and the curing area. The first cylinder 401, in conjunction with the support member 403 and the connecting rod 402, drives the support ring 404 to be lifted. After the positioning head 405 on the support ring 404 and the positioning port of the ring mold 5 are engaged, the ring mold 5 is lifted and transferred to the discharge port of the heating furnace.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tangent die device based on the polarization-maintaining fiber drawing process, characterized in that: It includes a base (1), a cutting mechanism (2), a receiving mechanism (3), and an upper mold mechanism (4); The base (1) includes a back plate (101), and the front side and top edge of the back plate (101) are respectively provided with a vertical plate (102) and a top plate (103). The bottom outer side of the vertical plate (102) is provided with a bottom plate (104), and the upper part of the outer side of the vertical plate (102) is fixed with a mold base (106) by two pillars (105). The mold base (106) has an open top and a circular bottom structure. The mold base (106) has a clearance opening (107) near the vertical plate (102). The mold base (106) has a ring mold (5) with a clearance fit inside. The ring mold (5) has several positioning holes. The upper mold mechanism (4) includes a first cylinder (401), which is vertically fixed on the top of the base plate (104) and located below the two pillars (105). The output end of the first cylinder (401) is fixed with a support ring (404) through a connecting rod (402) and a support member (403). The connecting rod (402) is located directly below the clearance opening (107). The support ring (404) is located directly below the ring mold (5) and has a positioning head (405) at the top that cooperates with the positioning port. The receiving mechanism (3) includes a hopper (301), a second cylinder (302), and a receiving box (303); The second cylinder (302) is horizontally fixed on the top of the top plate (103) and facing the mold base (106). The hopper (301) is fixed on the output end of the second cylinder (302). The receiving box (303) is fixed on the back side of the back plate (101). The rear side of the hopper (301) is open and extends to the top of the receiving box (303). The cutting mechanism (2) includes a set of symmetrically arranged cutting cylinders (201). The two cutting cylinders (201) are fixed to the top of the hopper (301) by a U-shaped seat (202). The U-shaped seat (202) is parallel to the second cylinder (302). The output ends of the two cutting cylinders (201) are provided with mutually cooperating blades (203).

2. The tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The back plate (101) is provided with a mounting base (108) on the side away from the vertical plate (102), and the mounting base (108) is provided with a plurality of mounting holes.

3. The tangent die device based on the polarization-maintaining fiber drawing process according to claim 2, characterized in that, A reinforcing mesh (109) is fixed to the front side of the back plate (101). The reinforcing mesh (109) is fixed to the inner sidewall of the vertical plate (102), the top plate (103) and the mounting base (108). The reinforcing mesh (109) is composed of several plates.

4. The tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The support member (403) has a circular ring structure. The support member (403) is fixed to the bottom surface of the support ring (404) by several arc-shaped clips (406). The connecting rod (402) is fixed between the support member (403) and the output end of the first cylinder (401).

5. A tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The outer diameter of the support ring (404) is smaller than the inner diameter of the center hole of the bottom part of the mold base (106), and the inner diameter of the support ring (404) is larger than the thread opening at the axis of the ring mold (5).

6. The tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, A clearance area is formed between a group of the aforementioned pillars (105), with the first cylinder (401) and the connecting rod (402) located directly below the clearance area.

7. A tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The bottom of the hopper (301) is inclined, and the front edge of the receiving box (303) is provided with a bevel (304). The bottom surface of the hopper (301) slides along the bevel (304).

8. A tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The top of the receiving box (303) is open, and the bottom of the receiving box (303) is provided with a guide slope (305), which is located on the rear side of the mold base (106).

9. A tangent die device based on the polarization-maintaining fiber drawing process according to claim 1, characterized in that, The housing portion of the second cylinder (302) occupies the area of ​​the top plate (103) away from the hopper (301), and the area of ​​the top plate (103) away from the second cylinder (302) forms a buffer area (110) that cooperates with the hopper (301).

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