Tooth type double-jaw winding drum

Abstract

The tooth type double-jaw winding drum comprises a main shaft, a pull rod is connected to the center of the main shaft in an inserted mode, the outer surface of the main shaft is connected with a plurality of fan-shaped plates through wedges, a mounting groove is formed in the outer surface of one fan-shaped plate, and a long-strip-shaped moving block is slidably connected into the mounting groove; the two sides of the moving block are in transmission connection with a plurality of clamping assemblies through a plurality of propelling gears, each clamping assembly comprises two clamping blocks symmetrically distributed on the two sides of the moving block, one end of the moving block is connected with a wedge through a spring device, and one end of the wedge is slidably connected into a main shaft groove in the main shaft. The main shaft is further provided with a plurality of gear groove holes, reversing gears are installed in the gear groove holes, and the pull rod is in transmission connection with the wedge through the reversing gears. The gear type transmission mode is adopted for driving, no extra power source needs to be configured, the structure is simpler, and the performance is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of jaw drums, and more specifically, to a toothed double-jaw drum. Background Art

[0002] Currently, the methods for fixing a strip on a drum include a belt coiler and a jaw device. Setting up a belt coiler has high requirements for the on-site space layout and the equipment is expensive, so currently most use jaw devices for clamping and coiling operations. The jaw device is divided into a hydraulic jaw and a mechanical jaw. Among them, the hydraulic jaw device mainly includes a plurality of small hydraulic cylinders axially arranged in a segment plate and a pressing plate fixed on the piston rod of the small hydraulic cylinder. By centralized oil supply, the piston rods of multiple hydraulic cylinders and the pressing plate are simultaneously extended to clamp the strip, and when the piston rods are simultaneously retracted, the pressing plate releases the strip. However, the existing clamping equipment and devices have the following disadvantages: One: The belt coiler occupies a large area, has high requirements for space layout, is expensive, and is troublesome to maintain later.

[0003] Two: The hydraulic cylinders of the hydraulic jaw use hydraulic oil as a medium and are prone to leakage, resulting in waste.

[0004] Three: The hydraulic cylinder is configured with oil pipelines, which need to pass through components such as the drum main shaft and the segment plate, and the production and processing are complex, and the manufacturing cost is high.

[0005] Four: The hydraulic pipelines and hydraulic seals are aged during use, resulting in leakage of hydraulic oil. The leaked hydraulic oil will contaminate the surface of the strip, causing losses to production and at the same time reducing production efficiency. Five: Unidirectional coiling, and the applicable range of the production line is small.

[0006] Six: In the existing structure of the drum, the inclined wedges all transmit force through the end interfaces, which is easy to cause part fracture. Summary of the Invention

[0007] In view of the above technical problems in the related art, the present invention provides a toothed double-jaw drum, which can solve the above problems.

[0008] To achieve the above technical objectives, the technical solution of the present invention is realized as follows: A toothed double-jaw drum includes a main shaft. A pull rod is inserted into the center of the main shaft. The outer surface of the main shaft is connected with a number of sector plates through wedges. An installation groove is formed on the outer surface of one of the sector plates. A long moving block is slidably connected in the installation groove. Both sides of the moving block are connected with a number of groups of clamping components through a number of propulsion gears. Each group of the clamping components includes two clamping blocks symmetrically distributed on both sides of the moving block. One end of the moving block is connected with the wedge through a spring device. One end of the wedge is slidably connected in a main shaft groove on the main shaft, and the other end is slidably connected in an inclined surface groove on the sector plate. A number of gear slots are also formed on the main shaft. A reversing gear is installed in the gear slots. The pull rod is connected with the wedge through the reversing gear.

[0009] Further, the reversing gear is installed inside the main shaft through a bearing seat. One side of the reversing gear is meshed and connected with a first transmission tooth on the pull rod, and the other side is meshed and connected with a second transmission tooth on the wedge. The first transmission tooth and the second transmission tooth are parallel.

[0010] Further, two fixing blocks are also connected in the installation groove through screws. The two fixing blocks are symmetrically distributed on both sides of the moving block. A number of installation slots are formed on the fixing blocks. One side of the installation slots is slidably connected with the clamping block, and the other side is connected with the propulsion gear through a pin shaft. A guiding part is provided at the bottom of the side of the fixing block opposite to the moving block. Guiding blocks adapted to the guiding part are provided at the bottoms of both sides of the moving block.

[0011] Further, one side surface of the clamping block is a clamping inclined surface. A third transmission tooth is provided on one side surface of the clamping block perpendicular to the clamping inclined surface. A number of racks are connected to both side surfaces of the moving block.

[0012] Further, one side of the propulsion gear is meshed and connected with the third transmission tooth, and the other side is meshed and connected with the rack. The third transmission tooth and the rack are perpendicular.

[0013] Further, the spring device includes a connecting rod. One end of the connecting rod passes through a branch block on the moving block and is threadedly connected to the end of the wedge, and the other end is locked by a nut. A spring is sleeved on the connecting rod. The spring is located between the branch block and the end of the wedge.

[0014] Further, a waist-shaped hole is formed on the branch block. One end of the connecting rod passes through the waist-shaped hole and is threadedly connected to the end of the wedge. The major axis dimension of the waist-shaped hole is larger than the rod diameter of the connecting rod.

[0015] Advantages of the present invention: This application has a double-jaw structure. Compared with the single-jaw of the prior art, this structure has a wider scope of application. It can be used as the reel jaw of a reversible production line or as the reel jaw of an ordinary production line. One side jaw is used as the main jaw, and the other side jaw is used as a spare jaw, which improves production efficiency and reduces the downtime rate. At the same time, this application uses a gear drive method for driving, without the need for an additional power source, and the structure is simpler and the performance is more stable. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] The following further details the present invention according to the drawings.

[0018] Figure 1 is the axial sectional view (when the reel expands) of a toothed double-jaw reel according to an embodiment of the present invention; Figure 2 is the radial sectional view (when the reel expands) of a toothed double-jaw reel according to an embodiment of the present invention; Figure 3 is Figure 2 the enlarged view of A in Figure 4 is Figure 2 the top view of A in Figure 5 is the structural schematic diagram of the rack according to an embodiment of the present invention; Figure 6 is the structural schematic diagram of the fixed block according to an embodiment of the present invention; Figure 7 is Figure 6 the partial schematic diagram of the rear side; Figure 8 is the structural schematic diagram of the clamping block according to an embodiment of the present invention; Figure 9 is the axial sectional view (when the reel shrinks) of a toothed double-jaw reel according to an embodiment of the present invention; Figure 10 is the radial sectional view (when the reel shrinks) of a toothed double-jaw reel according to an embodiment of the present invention.

[0019] In the figure: 1. Tie rod; 2. Spring device; 3. Wedge; 4. Main shaft; 4-1. Main shaft groove; 5. Sector plate one; 6. Moving block; 6-1. Guide block; 6-2. Branch block; 7. Reversing gear; 8. Sector plate two; 9. Rack; 10. Fixed block; 10-1. Mounting slot hole; 10-2. Guide part; 11. Propelling gear; 12. Clamping block; 12-1. Clamping inclined surface; 12-2. Transmission tooth three; 13. Pin shaft; 58. Inclined surface groove. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0021] As Figure 1-8 shown, according to the present invention, a toothed double-jaw drum is disclosed, mainly including a tie rod 1, a spring device 2, a wedge 3, a main shaft 4, a sector plate, a moving block 6, a reversing gear 7, a rack 9, a fixed block 10, a propelling gear 11, a clamping block 12, and a pin shaft 13.

[0022] In a specific embodiment of the present invention, the tie rod 1 is inserted into the center of the main shaft 4, and tooth features (transmission tooth one) are provided on all four circumferential sides of the tie rod 1. The tie rod 1 can axially move under the action of an external force, and the axial movement of the tie rod 1 can drive the axial movement of the wedge 3 through the reversing gear 7.

[0023] In a specific embodiment of the present invention, the main shaft 4 is the main support of the toothed double-jaw drum. The outer surface of the main shaft 4 is connected to four sector plates through the wedge 3, including a sector plate one 5 and three sector plates two 8. The sector plates are matched with the wedge 3 through inclined surfaces. Then, the axial movement of the wedge 3 can cause the radial movement of the sector plates. An installation groove is provided on the outer surface of the sector plate one 5, and two fixed blocks 10 are connected by screws in the installation groove. The moving block 6 is clamped between the two fixed blocks 10 and can axially move.

[0024] In a specific embodiment of the present invention, one end of the moving block 6 is connected to the wedge 3 through the spring device 2. The spring device 2 includes a connecting rod. One end of the connecting rod passes through the branch block 6-2 on the moving block 6 and is threadedly connected to the end of the wedge 3, and the other end is locked by a nut. A spring is sleeved on the connecting rod, and the spring is located between the branch block 6-2 and the end of the wedge 3. When the wedge 3 moves axially, it can drive the moving block 6 to move axially through the spring device 2. The axial movement of the moving block 6 can drive the clamping block 12 to clamp or loosen the strip steel through the driving gear 11. Further, when the first sector plate 5 moves radially, it will drive the moving block 6 to move radially. To avoid interfering with the axial movement of the moving block 6, a waist-shaped hole is provided on the branch block 6-2. One end of the connecting rod passes through the waist-shaped hole and is threadedly connected to the end of the wedge 3, and the major axis dimension of the waist-shaped hole is greater than the rod diameter of the connecting rod. As Figure 1 shown, when the reel expands, the connecting rod is located at the bottom end of the waist-shaped hole. As Figure 9 described, when the reel shrinks, the connecting rod is located at the top end of the waist-shaped hole.

[0025] In a specific embodiment of the present invention, when the reel expands - the jaws clamp the work piece, the pull rod 1 moves leftward under the action of an external power source. The pull rod 1 engages with the reversing gear 7 through the tooth part, causing the reversing gear 7 to rotate clockwise. The reversing gear 7 engages with the wedge 3 through the tooth part, causing the wedge 3 to move rightward. The inclined surface on the wedge 3 pushes the sector plate upward, thereby expanding the reel. While the wedge 3 moves rightward, it drives the moving block 6 to move rightward through the spring device 2. Multiple racks 9 embedded on both sides of the moving block 6 move rightward simultaneously. The rack 9 drives the driving gear 11 to rotate counterclockwise. The driving gear 11 rotates counterclockwise to drive the clamping block 12 to extend from the mounting slot hole 10-1 of the fixed block 10, thereby clamping the jaws. After the clamping block 12 clamps the strip steel, the spring in the spring device 2 is compressed according to the thickness of the different strip steels, thereby generating a clamping force to clamp the strip steel. The static states of the reel expansion and the jaw clamping are Figure 1 and Figure 2 shown.

[0026] In a specific embodiment of the present invention, when the reel shrinks and the jaws are released for operation, the pull rod 1 moves to the right under the action of an external power source. The pull rod 1 engages with the reversing gear 7 through the tooth part, causing the reversing gear 7 to rotate counterclockwise. The reversing gear 7 engages with the wedge 3 through the tooth part, causing the wedge 3 to move to the left. The hook on the wedge 3 pulls the sector plate downward, thereby shrinking the reel. While the wedge 3 moves to the left, it drives the moving block 6 to move to the left through the spring device 2. Multiple racks 9 embedded on both sides of the moving block 6 move to the left simultaneously. The rack 9 drives the propulsion gear 11 to rotate clockwise. The clockwise rotation of the propulsion gear 11 drives the clamping block 12 to retract from the mounting slot hole 10-1 of the fixed block 10, thereby opening the jaws. The stationary states of the reel shrinking and the jaws releasing are Figure 9 and Figure 10 as shown

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A toothed double-jaw drum, comprising a main shaft (4), characterized in that, A pull rod (1) is inserted into the center of the main shaft (4). The outer surface of the main shaft (4) is connected with a number of sector plates through a wedge (3). An installation groove is formed on the outer surface of one of the sector plates. A long moving block (6) is slidably connected in the installation groove. Both sides of the moving block (6) are drivingly connected with a number of clamping assemblies through a number of driving gears (11). Each clamping assembly includes two clamping blocks (12) symmetrically distributed on both sides of the moving block (6). One end of the moving block (6) is connected with the wedge (3) through a spring device (2). One end of the wedge (3) is slidably connected in a main shaft groove (4-1) on the main shaft (4), and the other end is slidably connected in an inclined surface groove (58) on the sector plate. A number of gear groove holes are also formed on the main shaft (4), and a reversing gear (7) is installed in the gear groove holes. The pull rod (1) is drivingly connected with the wedge (3) through the reversing gear (7).

2. The toothed double-jaw reel according to claim 1, characterized in that, The reversing gear (7) is installed inside the main shaft (4) through a bearing seat. One side of the reversing gear (7) is meshed and connected with a first driving tooth on the pull rod (1), and the other side is meshed and connected with a second driving tooth on the wedge (3). The first driving tooth and the second driving tooth are parallel to each other.

3. A toothed double-jaw reel according to claim 1, characterized in that, Two fixing blocks (10) are also connected in the installation groove through screws. The two fixing blocks (10) are symmetrically distributed on both sides of the moving block (6). A number of installation slot holes (10-1) are formed on the fixing blocks (10). One side of the installation slot holes (10-1) is slidably connected with the clamping block (12), and the other side is connected with the driving gear (11) through a pin shaft (13). A guiding part (10-2) is provided at the bottom of the side surface of the fixing block (10) opposite to the moving block (6). Guiding blocks (6-1) adapted to the guiding part (10-2) are provided at the bottoms of both side surfaces of the moving block (6).

4. A toothed double-jaw reel according to claim 3, characterized in that, One side surface of the clamping block (12) is a clamping inclined surface (12-1). A third driving tooth (12-2) is provided on a side surface of the clamping block (12) perpendicular to the clamping inclined surface (12-1). A number of racks (9) are connected to both side surfaces of the moving block (6).

5. A toothed double-jaw reel according to claim 4, characterized in that, One side of the driving gear (11) is meshed and connected with the third driving tooth (12-2), and the other side is meshed and connected with the rack (9). The third driving tooth (12-2) is perpendicular to the rack (9).

6. A toothed double-jaw reel according to claim 1, wherein, The spring device (2) includes a connecting rod. One end of the connecting rod passes through a branch block (6-2) on the moving block (6) and is threadedly connected to the end of the wedge (3), and the other end is locked by a nut. A spring is sleeved on the connecting rod, and the spring is located between the branch block (6-2) and the end of the wedge (3).

7. The toothed double-jaw reel according to claim 6, characterized in that, An oval hole is formed on the branch block (6-2). One end of the connecting rod passes through the oval hole and is threadedly connected to the end of the wedge (3). The major axis dimension of the oval hole is larger than the rod diameter of the connecting rod.

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