Auxiliary drawing cylinder for optical fiber drawing

Abstract

The utility model relates to the technical field of optical fiber production equipment, and discloses an auxiliary drawing cylinder for optical fiber drawing, which comprises a device base and a drawing cylinder, a die holder is mounted at the top of the device base, and the drawing cylinder can be butted with a leading-in die at the top of the die holder through a groove arranged at the bottom of the drawing cylinder. The stability of the cylinder body can be guaranteed when the wire drawing cylinder is placed at the top of a die holder, the central convex surface is arranged on the inner bottom surface of the wire drawing cylinder, so that optical fibers can be better looped around the bottom, meanwhile, the distance between the cylinder body of the wire drawing cylinder and the auxiliary traction guide wheel is shortened, the stress generated by falling of the optical fibers is reduced, and through the O-shaped cylinder body of the wire drawing cylinder, the stability of the cylinder body is improved. The fiber drawing cylinder can assist the fiber in falling into the cylinder for natural looping, prevents the fiber from breaking in the cylinder to form a fluffy state and causing fiber overflow, can further prevent the fiber from touching the bottom and popping out of the cylinder through the concave design of the cylinder opening of the fiber drawing cylinder, controls the guiding effect of the fiber entering the cylinder, and reduces the broken fiber pollution source of the table top of the die holder.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber production equipment, in particular to an optical fiber drawing auxiliary drawing drum. Background Art

[0002] After the optical fiber preform is melted, the optical fiber needs to be pulled to the mold base table on the second floor, and the diameter is controlled by auxiliary traction. The optical fiber can be put into the mold for production only after the diameter is controlled within a reasonable range.

[0003] This process takes a long time to control and the optical fiber diameter is relatively thin. In order to achieve the appropriate range of mold penetration diameter, the auxiliary traction speed needs to be adjusted to control the wire diameter. The waste optical fiber generated in this process needs to be collected and processed with appropriate tools.

[0004] In the prior art, an ordinary steel basin is usually placed above the mold base as a waste fiber collection tool, which has many inconveniences in use:

[0005] 1) The steel basin is not stable enough when placed on the mold base and is prone to tilt and overturn.

[0006] 2) The optical fiber is easy to pop out in the basin, and the tiny bare fiber that pops out pollutes the mold base surface and is difficult to clean

[0007] 3) The optical fiber is easily disturbed and wound around the auxiliary traction belt, causing the belt to pierce the optical fiber and cause damage

[0008] 4) Thicker optical fibers are placed low in the basin and are prone to popping out, which poses a certain risk when personnel operate on the table. Utility Model Content

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies in the prior art, the utility model provides an optical fiber drawing auxiliary drawing drum to solve the above technical problems.

[0011] (II) Technical solution

[0012] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an optical fiber drawing auxiliary drawing drum, comprising a device base and a drawing drum, a mold base is installed on the top of the device base, an introduction mold is extended vertically upward from the top of the mold base, and a groove matching the shape of the introduction mold is provided at the bottom of the drawing drum, a convex surface is provided at the center of the inner bottom surface of the drawing drum, the barrel body of the drawing drum is O-shaped, the barrel mouth of the drawing drum is concave, and handles are arranged on the outer walls on both sides of the drawing drum.

[0013] Preferably, a transmission cavity is opened in the mold base, and a driving gear is rotatably installed at the center position of the transmission cavity. The first transmission block and the second transmission block are arranged in the transmission cavity. The first transmission block and the second transmission block are arranged with transmission teeth meshing with the driving gear. The tops of the first transmission block and the second transmission block are arranged with clamping blocks, and both sides of the bottom of the wire drawing drum are provided with limiting grooves adapted to the clamping blocks.

[0014] Preferably, two horizontal guide grooves are provided on the inner walls on both sides of the transmission cavity, and horizontal guide blocks are slidably arranged in the horizontal guide grooves, and every two horizontal guide blocks on the same horizontal plane are respectively installed on the first transmission block and the second transmission block.

[0015] Preferably, a return spring is arranged in the horizontal guide groove, one end of the return spring is mounted on the inner wall of the horizontal guide groove, and the other end of the return spring is mounted on the horizontal guide block.

[0016] Preferably, a rotating shaft penetrating the mold base and extending to the outside is installed on the driving gear, and an adjusting knob is installed on one end of the rotating shaft away from the driving gear.

[0017] Preferably, a hexagonal groove is provided on the adjusting knob.

[0018] Preferably, two mutually symmetrical rectangular sliding holes are provided on the top inner wall of the transmission cavity, and the tops of the first transmission block and the second transmission block are both connected to the clamping block through the rectangular sliding holes.

[0019] Compared with the prior art, the utility model provides an optical fiber drawing auxiliary drawing drum, which has the following beneficial effects:

[0020] 1. The utility model can dock with the introduction mold on the top of the mold base through the groove arranged at the bottom of the drawing cylinder, so as to ensure the stability of the cylinder body when the drawing cylinder is placed on the top of the mold base, and because the inner bottom surface of the drawing cylinder is provided with a central convex surface, the optical fiber can be better circled around the bottom, and at the same time, the distance between the cylinder body of the drawing cylinder and the auxiliary pulling guide wheel is shortened, and the stress caused by the falling of the optical fiber is reduced. The O-shaped cylinder body of the drawing cylinder can assist the optical fiber to fall into the cylinder and circle naturally, and prevent the optical fiber from breaking in the cylinder and forming a fluffy state, causing the optical fiber to overflow, and the concave design of the cylinder mouth of the drawing cylinder can further prevent the optical fiber from touching the bottom and popping out of the cylinder, control the guiding effect of the optical fiber entering the cylinder, and reduce the source of broken fiber pollution on the mold base table. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the structure of the first transmission block and the second transmission block of the utility model;

[0023] Figure 3 It is a schematic diagram of a top view cross-sectional structure of the rotating shaft and adjusting knob and other structures of the utility model;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the horizontal guide block and the return spring and other structures of the utility model when viewed from above.

[0025] Among them: 1. Device base; 2. Die base; 3. Wire drawing cylinder; 4. Transmission chamber; 5. Driving gear; 6. First transmission block; 7. Rectangular slide hole; 8. Introduction die; 9. Groove; 10. Limiting slot; 11. Transmission tooth; 12. Second transmission block; 13. Horizontal guide groove; 14. Horizontal guide block; 15. Rotating shaft; 16. Adjustment knob; 17. Reset spring; 18. Block. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-4A fiber drawing auxiliary drawing drum comprises a device base 1 and a drawing drum 3. A mold base 2 is installed on the top of the device base 1. An introduction mold 8 is vertically extended upward from the top of the mold base 2. A groove 9 matching the shape of the introduction mold is provided at the bottom of the drawing drum 3. A convex surface is provided at the center of the inner bottom surface of the drawing drum 3. The barrel body of the drawing drum 3 is O-shaped, and the barrel mouth of the drawing drum 3 is concave. Handles are arranged on the outer walls on both sides of the drawing drum 3.

[0030] The groove 9 provided at the bottom of the drawing cylinder 3 can be connected with the introduction mold 8 on the top of the mold base 2, so that the stability of the cylinder body can be guaranteed when the drawing cylinder 3 is placed on the top of the mold base 2, and because the inner bottom surface of the drawing cylinder 3 is provided with a central convex surface, the optical fiber can be better circled around the bottom, and at the same time, the distance between the cylinder body of the drawing cylinder 3 and the auxiliary pulling guide wheel is shortened, and the stress caused by the falling of the optical fiber is reduced. The O-shaped cylinder body of the drawing cylinder 3 can assist the optical fiber to fall into the cylinder and circle naturally, preventing the optical fiber from breaking in the cylinder and forming a fluffy state, causing the optical fiber to overflow, and the concave design of the cylinder mouth of the drawing cylinder 3 can further prevent the optical fiber from touching the bottom and popping out of the cylinder, thereby controlling the guiding effect of the optical fiber entering the cylinder and reducing the source of broken fiber pollution on the surface of the mold base 2.

[0031] Specifically, in the present embodiment, a transmission cavity 4 is opened in the mold base 2, a driving gear 5 is rotatably installed at the center position of the transmission cavity 4, a first transmission block 6 and a second transmission block 12 are arranged in the transmission cavity 4, transmission teeth 11 meshing with the driving gear 5 are arranged on the first transmission block 6 and the second transmission block 12, a clamping block 18 is arranged on the top of the first transmission block 6 and the second transmission block 12, and limiting grooves 10 adapted to the clamping blocks 18 are opened on both sides of the bottom of the wire drawing drum 3.

[0032] By cooperating with each other among the structures such as the active gear 5, the first transmission block 6 and the second transmission block 12, the active gear 5 can be rotated to drive the first transmission block 6 and the second transmission block 12 to approach each other, so that the two clamping blocks 18 are approached to each other and inserted into the limiting clamping groove 10, so as to realize the limiting fixation of the wire drawing drum 3 and further ensure the stability of the wire drawing drum 3 on the mold base 2.

[0033] Specifically, in this embodiment, two horizontal guide grooves 13 are provided on the inner walls on both sides of the transmission chamber 4, and horizontal guide blocks 14 are slidably arranged in the horizontal guide grooves 13. Every two horizontal guide blocks 14 on the same horizontal plane are respectively installed on the first transmission block 6 and the second transmission block 12.

[0034] By arranging the horizontal guide groove 13 and the horizontal guide block 14, the horizontal guide block 14 can be driven to slide along the horizontal guide groove 13 when the first transmission block 6 and the second transmission block 12 move in the transmission cavity 4, thereby achieving the purpose of limiting the movement range of the first transmission block 6 and the second transmission block 12.

[0035] Specifically, in this embodiment, a return spring 17 is arranged in the horizontal guide groove 13 , one end of the return spring 17 is mounted on the inner wall of the horizontal guide groove 13 , and the other end of the return spring 17 is mounted on the horizontal guide block 14 .

[0036] The reset spring 17 can ensure that the horizontal guide block 14 is always pressed against the inner wall of the horizontal guide groove 13, so that the first transmission block 6 and the second transmission block 12 are always kept close to each other, and the two clamping blocks 18 can always be clamped in the two limit clamping grooves 10 on the wire drawing drum 3, thereby ensuring the stability of the wire drawing drum 3 on the top of the mold base 2.

[0037] Specifically, in this embodiment, a rotating shaft 15 penetrating the mold base 2 and extending to the outside is installed on the driving gear 5, and an adjusting knob 16 is installed on the end of the rotating shaft 15 away from the driving gear 5, and a hexagonal groove 9 is formed on the adjusting knob 16.

[0038] Through the rotating shaft 15 and the adjusting knob 16 , a hexagonal wrench can be inserted into the inner hexagonal slot to drive the driving gear 5 to rotate.

[0039] Specifically, in the present embodiment, two mutually symmetrical rectangular sliding holes 7 are provided on the top inner wall of the transmission chamber 4, and the tops of the first transmission block 6 and the second transmission block 12 are connected to the clamping block 18 through the rectangular sliding holes 7. The moving directions of the two clamping blocks 18 can be guided by the rectangular sliding holes 7, and the moving ranges of the first transmission block 6 and the second transmission block 12 can be limited.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical fiber drawing auxiliary drawing drum, comprising a device base and a drawing drum, characterized in that: A mold base is installed on the top of the device base, and an introduction mold is extended vertically upward from the top of the mold base. The bottom of the wire drawing drum is provided with a groove matched with the shape of the introduction mold, and a convex surface is provided at the center of the inner bottom surface of the wire drawing drum. The barrel body of the wire drawing drum is O-shaped, and the barrel mouth of the wire drawing drum is concave inwardly designed, and handles are arranged on the outer walls on both sides of the wire drawing drum.

2. The optical fiber drawing auxiliary drawing drum according to claim 1, characterized in that: A transmission cavity is provided in the die base, a driving gear is rotatably installed at the center of the transmission cavity, a first transmission block and a second transmission block are arranged in the transmission cavity, transmission teeth meshing with the driving gear are arranged on the first transmission block and the second transmission block, clamping blocks are arranged on the top of the first transmission block and the second transmission block, and limiting grooves matching the clamping blocks are provided on both sides of the bottom of the wire drawing drum.

3. The optical fiber drawing auxiliary drawing drum according to claim 2, characterized in that: Two horizontal guide grooves are provided on the inner walls on both sides of the transmission cavity, and horizontal guide blocks are slidably arranged in the horizontal guide grooves. Every two horizontal guide blocks on the same horizontal plane are respectively installed on the first transmission block and the second transmission block.

4. The optical fiber drawing auxiliary drawing drum according to claim 3, characterized in that: A return spring is arranged in the horizontal guide groove, one end of the return spring is installed on the inner wall of the horizontal guide groove, and the other end of the return spring is installed on the horizontal guide block.

5. The optical fiber drawing auxiliary drawing drum according to claim 2, characterized in that: The driving gear is provided with a rotating shaft which penetrates the die base and extends to the outside, and an adjusting knob is provided at one end of the rotating shaft away from the driving gear.

6. The optical fiber drawing auxiliary drawing drum according to claim 5, characterized in that: The adjusting knob is provided with a hexagonal groove.

7. The optical fiber drawing auxiliary drawing drum according to claim 2, characterized in that: Two mutually symmetrical rectangular sliding holes are provided on the top inner wall of the transmission cavity, and the tops of the first transmission block and the second transmission block are both connected to the clamping block through the rectangular sliding holes.

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