A toothed double tong reel

Abstract

This utility model discloses a toothed double-jaw drum, including a main shaft with a pull rod inserted into its center. Several sector plates are connected to the outer surface of the main shaft via wedges. One of the sector plates has a mounting groove on its outer surface, in which a long, narrow moving block is slidably connected. Several sets of clamping assemblies are connected to both sides of the moving block via several propulsion gears. Each clamping assembly includes two clamping blocks symmetrically distributed on both sides of the moving block. One end of the moving block is connected to the wedge via a spring device. One end of the wedge is slidably connected to a main shaft groove on the main shaft, and the other end is slidably connected to a sloped groove on the sector plate. Several gear slots are also provided on the main shaft, in which reversing gears are installed. The pull rod is connected to the wedge via reversing gears. This application uses a toothed transmission method for drive, eliminating the need for an additional power source, resulting in a simpler structure and more stable performance.

Description

Technical Field

[0001] This utility model relates to the technical field of jaw reel, specifically to a toothed double jaw reel. Background Technology

[0002] Currently, methods for securing strip material to the drum include belt winding aids and jaw clamping devices. Belt winding aids require significant space and are expensive, so jaw clamping devices are currently the most common method for strip clamping and winding operations. Jaw clamping devices are further divided into hydraulic jaw clamps and mechanical jaw clamps. Hydraulic jaw clamping devices mainly consist of multiple small hydraulic cylinders axially arranged within a sector-shaped plate and pressure plates fixed to the piston rods of these cylinders. Centralized oil supply causes the piston rods of multiple hydraulic cylinders and the pressure plates to extend simultaneously, thus clamping the strip material. When the piston rods retract simultaneously, the pressure plates release the strip material. However, existing clamping equipment and devices have the following drawbacks:

[0003] 1. Belt winding machines have a large footprint, require specific space layout, are expensive, and are troublesome to maintain.

[0004] Second: Hydraulic jaw cylinders using hydraulic oil as the medium are prone to leakage, resulting in waste.

[0005] Third: The hydraulic cylinder is equipped with oil pipelines, which need to pass through components such as the drum spindle and sector plate, making the production and processing complex and the manufacturing cost high.

[0006] Fourth: Aging of hydraulic pipelines and hydraulic seals during use can cause hydraulic oil leakage. The leaked hydraulic oil will contaminate the surface of the strip, resulting in production losses and reduced production efficiency.

[0007] 5. Unidirectional winding limits its applicability to production lines.

[0008] Sixth: The wedges in the existing structure drum all transmit force at the end interface, which can easily cause parts to break. Utility Model Content

[0009] In view of the above-mentioned technical problems in related technologies, this utility model provides a toothed double-jaw reel that can solve the above problems.

[0010] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0011] A toothed double-jaw reel includes a main shaft with a pull rod inserted into its center. Several sector plates are connected to the outer surface of the main shaft via wedges. One sector plate has a mounting groove on its outer surface, in which a long, narrow movable block is slidably connected. Several sets of clamping assemblies are connected to both sides of the movable block via several propulsion gears. Each set of clamping assemblies includes two clamping blocks symmetrically distributed on both sides of the movable block. One end of the movable block is connected to the wedge via a spring device. One end of the wedge is slidably connected to a main shaft groove on the main shaft, and the other end is slidably connected to an inclined groove on the sector plate. Several gear slots are also provided on the main shaft, in which reversing gears are installed. The pull rod is connected to the wedge via the reversing gears.

[0012] Furthermore, the reversing gear is mounted inside the main shaft via a bearing housing. One side of the reversing gear is engaged with a first transmission tooth on the pull rod, and the other side is engaged with a second transmission tooth on the wedge. The first transmission tooth and the second transmission tooth are parallel.

[0013] Furthermore, two fixing blocks are connected to the mounting groove by screws. The two fixing blocks are symmetrically distributed on both sides of the moving block. Several mounting slots are provided on the fixing blocks. The clamping block is slidably connected to one side of the mounting slot, and the propulsion gear is connected to the other side by a pin. A guide part is provided on the bottom side of the fixing block opposite to the moving block. Guide blocks that are adapted to the guide part are provided on the bottom side of both sides of the moving block.

[0014] Furthermore, one side of the clamping block is a clamping inclined surface, and a transmission tooth is provided on one side of the clamping block perpendicular to the clamping inclined surface. Several racks are connected to the two sides of the moving block.

[0015] Furthermore, one side of the propulsion gear is meshed with the transmission gear three, and the other side is meshed with the rack, with the transmission gear three being perpendicular to the rack.

[0016] Furthermore, the spring device includes a connecting rod, one end of which passes through the branch block on the movable block and is threaded to the end of the wedge, 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 and the end of the wedge.

[0017] Furthermore, a waist-shaped hole is provided on the branch block, one end of the connecting rod passes through the waist-shaped hole and is threaded to the end of the wedge, and the major axis dimension of the waist-shaped hole is larger than the rod diameter of the connecting rod.

[0018] The beneficial effects of this utility model are as follows: This application has a double jaw structure, which has a wider range of applications compared with the single jaw of the prior art. It can be used as a rolling jaw for a reversible production line or as a rolling jaw for a regular production line. One jaw is used as the main jaw, while the other jaw is used as a backup jaw, which improves production efficiency and reduces downtime. At the same time, this application adopts a gear transmission method for driving, which does not require an additional power source, making the structure simpler and the performance more stable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Figure 1 This is an axial cross-sectional view of a toothed double-jaw drum according to an embodiment of the present invention (when the drum expands).

[0022] Figure 2 This is a radial cross-sectional view of a toothed double-jaw drum according to an embodiment of the present invention (when the drum expands).

[0023] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0024] Figure 4 yes Figure 2 Top view at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the rack structure described in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the fixing block described in an embodiment of the present utility model;

[0027] Figure 7 yes Figure 6 A partial view of the rear side;

[0028] Figure 8 This is a schematic diagram of the structure of the clamping block described in an embodiment of the present invention;

[0029] Figure 9 This is an axial cross-sectional view of a toothed double-jaw drum according to an embodiment of the present invention (when the drum is reduced in size);

[0030] Figure 10 This is a radial cross-sectional view of a toothed double-jaw drum as described in an embodiment of this utility model (when the drum is reduced in size).

[0031] In the picture:

[0032] 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. Fixing block; 10-1. Mounting slot; 10-2. Guide part; 11. Push gear; 12. Clamping block; 12-1. Clamping inclined surface; 12-2. Transmission gear three; 13. Pin; 58. Inclined groove. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0034] like Figure 1-8 As shown, this utility model discloses a toothed double-jaw drum, which mainly includes a pull 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 fixing block 10, a pushing gear 11, a clamping block 12, and a pin shaft 13.

[0035] In a specific embodiment of this utility model, the pull rod 1 is inserted into the center of the main shaft 4, and its circumference is provided with tooth features (transmission teeth 1) on all four sides. The pull rod 1 can move axially under the action of external force. The axial movement of the pull rod 1 can drive the wedge 3 to move axially through the reversing gear 7.

[0036] In a specific embodiment of this utility model, the main shaft 4 is the main support of the double-jaw drum. The outer surface of the main shaft 4 is connected to four sector plates by wedges 3, including one sector plate 5 and three sector plates 8. The sector plates cooperate with the wedges 3 through inclined surfaces, so the axial movement of the wedges 3 can make the sector plates move radially. The outer surface of the sector plate 5 is provided with a mounting groove. Two fixing blocks 10 are connected in the mounting groove by screws, and the moving block 6 is clamped between the two fixing blocks 10 and can move axially.

[0037] In a specific embodiment of this utility model, one end of the movable block 6 is connected to the wedge 3 via a spring device 2. The spring device 2 includes a connecting rod, one end of which passes through the branch block 6-2 on the movable block 6 and is threaded to the end of the wedge 3, while 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 movable block 6 to move axially via the spring device 2. The axial movement of the movable block 6 can drive the clamping block 12 to clamp or loosen the strip steel via the push gear 11. Furthermore, when the sector plate 5 moves radially, it will drive the movable block 6 to move radially. To avoid interfering with the axial movement of the movable block 6, this application provides a waist-shaped hole on the branch block 6-2. One end of the connecting rod passes through the waist-shaped hole and is threaded to the end of the wedge 3. The major axis dimension of the waist-shaped hole is larger than the diameter of the connecting rod. Figure 1 As shown, when the drum expands, the connecting rod is located at the bottom end of the oblong hole, as... Figure 9 As the drum shrinks, the connecting rod is located at the top of the waist-shaped hole.

[0038] In a specific embodiment of this utility model, during the drum expansion and jaw clamping operation, the pull rod 1 moves to the left under the influence of an external power source. The pull rod 1 meshes with the reversing gear 7 through its teeth, causing the reversing gear 7 to rotate clockwise. The reversing gear 7 meshes with the wedge 3 through its teeth, causing the wedge 3 to move to the right. The inclined surface on the wedge 3 pushes the fan-shaped plate upward, thereby expanding the drum. Simultaneously, the wedge 3 moves to the right, driving the moving block 6 to move to the right via the spring device 2. Multiple racks 9 embedded on both sides of the moving block 6 move to the right at the same time. The racks 9 drive the propulsion gear 11 to rotate counterclockwise. The counterclockwise rotation of the propulsion gear 11 causes the clamping block 12 to extend from the mounting slot 10-1 of the fixed block 10, thereby clamping the strip. After the clamping block 12 clamps the strip, the spring in the spring device 2 is compressed according to the different strip thicknesses, thereby generating a clamping force to clamp the strip. The static state of the drum expansion and jaw clamping is as follows: Figure 1 and Figure 2 As shown.

[0039] In one specific embodiment of this utility model, during the drum shrinking-jaw loosening operation, the pull rod 1 moves to the right under an external power source. The pull rod 1 engages with the reversing gear 7 through its teeth, causing the reversing gear 7 to rotate counterclockwise. The reversing gear 7 also engages with the wedge 3 through its teeth, causing the wedge 3 to move to the left. The hook on the wedge 3 pulls the fan-shaped plate downward, thereby shrinking the drum. Simultaneously, the wedge 3 moves to the left, driving the moving block 6 to move to the left via the spring device 2. Multiple racks 9 embedded on both sides of the moving block 6 also move to the left, driving the push gear 11 to rotate clockwise. The clockwise rotation of the push gear 11 causes the clamping block 12 to retract from the mounting slot 10-1 of the fixed block 10, thereby opening the jaws. The static state of drum shrinking and jaw loosening is... Figure 9 and Figure 10 As shown.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A toothed double tong reel comprising a main shaft (4), characterized in that, A pull rod (1) is inserted into the center of the main shaft (4). Several sector plates are connected to the outer surface of the main shaft (4) through a wedge (3). An installation groove is provided on the outer surface of one of the sector plates. A long strip-shaped moving block (6) is slidably connected in the installation groove. Several sets of clamping components are connected to both sides of the moving block (6) through several push gears (11). Each set of clamping components includes two clamping blocks (12) symmetrically distributed on both sides of the moving block (6). One end of the moving block (6) is connected to the wedge (3) through a spring device (2). One end of the wedge (3) is slidably connected to the main shaft groove (4-1) on the main shaft (4), and the other end is slidably connected to the inclined groove (58) on the sector plate. Several gear slots are also provided on the main shaft (4). A reversing gear (7) is installed in the gear slot. The pull rod (1) is connected to the wedge (3) through the reversing gear (7).

2. A toothed double-plier 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 with the first transmission tooth on the pull rod (1), and the other side is meshed with the second transmission tooth on the wedge (3). The first transmission tooth and the second transmission tooth are parallel.

3. A toothed double-plier reel according to claim 1, characterized in that, Two fixing blocks (10) are connected to the mounting groove by screws. The two fixing blocks (10) are symmetrically distributed on both sides of the moving block (6). Several mounting slots (10-1) are provided on the fixing blocks (10). The clamping block (12) is slidably connected to one side of the mounting slot (10-1), and the propulsion gear (11) is connected to the other side by a pin (13). The bottom side of the fixing block (10) opposite to the moving block (6) is provided with a guide part (10-2). The bottom sides of the moving block (6) are provided with guide blocks (6-1) that are adapted to the guide part (10-2).

4. A toothed double-plier reel according to claim 3, wherein, One side of the clamping block (12) is a clamping inclined surface (12-1), and a transmission gear (12-2) is provided on one side of the clamping block (12) that is perpendicular to the clamping inclined surface (12-1). Several racks (9) are connected to the two sides of the moving block (6).

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

6. A toothed double-jaw reel according to claim 1, characterized in that, The spring device (2) includes a connecting rod, one end of which passes through the branch block (6-2) on the moving block (6) and is threaded 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 end of the branch block (6-2) and the end of the wedge (3).

7. A toothed double-jaw reel according to claim 6, characterized in that, 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 threaded to the end of the wedge (3). The major axis dimension of the waist-shaped hole is greater than the rod diameter of the connecting rod.

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