Multi-station rolling die for forming hexagonal rods of pencils
By designing a multi-station rolling die for forming hexagonal pencil rods, and utilizing the synergistic effect of cylinders, motors, and heating elements, the problem of low efficiency in pencil rolling forming was solved, achieving efficient and precise hexagonal rod forming and improving the stability and quality of pencil processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中国第一铅笔泗洪有限公司
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, it is difficult to quickly and efficiently roll waste material into a hexagonal rod shape during pencil processing, resulting in low forming efficiency.
Design a multi-station rolling die for forming hexagonal pencil rods. The distance between the rolling roller and the rotating roller is adjusted by a cylinder, the rolling roller is driven to rotate synchronously by a motor, and the temperature is controlled by a heating tube to enhance the plasticity of the pencil raw material. Precise forming is achieved by the synergistic action of the rolling roller and rotating roller at multiple stations.
This technology enables efficient roll forming of pencil raw materials, ensuring the shape accuracy and surface quality of pencil shafts, and improving processing efficiency and stability.
Smart Images
Figure CN224170547U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pencil processing technology, specifically a multi-station rolling die for forming hexagonal pencil shafts. Background Technology
[0002] A pencil is a tool used for writing, drawing, etc. Based on the physical properties of graphite, when a pencil writes or draws on the surface of an object such as paper, the lead rubs against the surface. Under pressure, the graphite layer is rubbed off and adheres to the surface of the object, forming black or other colored marks, thus achieving the function of writing or drawing. The manufacturing process of a pencil is relatively complex.
[0003] In existing technologies, recycled waste materials are sometimes used in pencil manufacturing. During this process, the pencils need to be rolled into a hexagonal shape to ensure stability in subsequent use. However, it is difficult to roll the material quickly and efficiently. Therefore, this application designs a multi-station rolling die for forming hexagonal pencil shafts. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-station rolling die for forming hexagonal pencil rods, so as to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution.
[0006] This utility model provides a multi-station rolling die for forming hexagonal pencil shafts, including a frame. Multiple rollers are rotatably connected inside the frame. Multiple strip-shaped openings are formed on the inner wall of the top of the frame, and rolling rollers are slidably mounted on the inner walls of each of the strip-shaped openings. A movable frame is slidably mounted above the frame. A cylinder is fixedly connected to the top of the frame. An opening is formed on the inner wall of the top of the movable frame, through which the cylinder passes. A connecting frame is fixedly connected to the piston rod end of the cylinder, and the connecting frame is fixedly connected to the upper surface of the movable frame. A fixed frame is fixedly connected to the side wall of the movable frame, and a motor is fixedly connected to the side wall of the fixed frame. Two rotating shafts are rotatably connected to the side wall of the frame. First gears are fixedly mounted on the shaft walls of the two rotating shafts. The ends of the multiple rolling rollers extend to the outer side of the movable frame and are fixedly mounted with second gears. The multiple second gears mesh with the two first gears. The output shaft of the motor is fixedly connected to the end of one of the rotating shafts.
[0007] Preferably, the roller walls of the plurality of rotating rollers and the plurality of rolling rollers are respectively provided with a plurality of annular pressure grooves.
[0008] Preferably, a controller is fixedly connected to the side wall of the frame, a support frame is fixedly connected to the inner wall of the frame above the controller, a connecting conduit is electrically connected to the top of the controller, through holes are opened in the interior of the plurality of rotating rollers, heating tubes are inserted into the interior of the plurality of rotating rollers, and the connecting conduit is electrically connected to the heating tubes.
[0009] Preferably, the wall of the heating tube is fixedly connected to the inner wall of the support frame.
[0010] Preferably, both ends of the roller extend into the interior of the support frame and are fixedly fitted with retaining rings, and the sidewalls of the retaining rings are slidably disposed on the sidewalls of the frame.
[0011] Preferably, the two second gears extend into the interior of the fixing frame and mesh with the first gear.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This multi-station rolling die for forming hexagonal pencil rods uses the piston rod of a cylinder to extend and retract, driving the connecting frame and movable frame to move up and down, thereby adjusting the distance between the rolling roller and the rotating roller. According to the size of the pencil rod and the forming requirements, the rolling roller is adjusted to a suitable position so that the pencil rod material can pass smoothly between the rotating roller and the rolling roller and be rolled.
[0014] 2. The multi-station rolling die for forming the hexagonal pencil rod is driven by the output shaft of the motor to rotate the connected rotating shaft. The first gear on the rotating shaft rotates accordingly and meshes with the second gear at the end of the rolling roller, transmitting power to the rolling roller and causing multiple rolling rollers to rotate synchronously. The pencil rod material is placed on the rotating roller, and as the rotating roller and the rolling roller rotate, the material is squeezed between them. The annular pressure grooves on the roller walls of the rotating roller and the rolling roller cooperate with each other to gradually roll the cylindrical pencil rod material into a hexagon. During the rolling process, the rolling rollers and rotating rollers at multiple stations work together to ensure the shape accuracy and surface quality of the pencil rod.
[0015] 3. The multi-station rolling die for forming the hexagonal pencil rod is electrically connected to the heating tube inside the roller via a controller and connecting conduit. The operator can set the appropriate temperature and heating time on the controller according to the characteristics of the pencil rod material and the forming requirements. The heating tube is fixed to the inner wall of the support frame to ensure its stable position and that the heat can be evenly transferred to the roller. When the heating tube is powered on, it generates heat, which is transferred to the roller, causing the surface temperature of the roller to rise. When the pencil rod material comes into contact with the heated roller, the material softens due to the heat, its plasticity is enhanced, and it is easier to form under the action of the rolling roller. Attached Figure Description
[0016] Figure 1 This is a first three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;
[0018] Figure 3 This is a partial structural cross-sectional view of the present invention.
[0019] In the diagram: 1. Frame, 2. Rotary roller, 3. Roller, 4. Movable frame, 5. Cylinder, 6. Connecting frame, 7. Fixed frame, 8. Motor, 9. Rotary shaft, 10. First gear, 11. Second gear, 12. Controller, 13. Support frame, 14. Connecting conduit, 15. Heating tube, 16. Retaining ring. Detailed Implementation
[0020] A multi-station rolling die for forming hexagonal pencil shafts, such as Figure 1-3 As shown, the machine includes a frame 1, with multiple rotating rollers 2 rotatably connected inside the frame 1. Multiple strip-shaped openings are formed on the inner wall of the top of the frame 1, and rolling rollers 3 are slidably mounted on the inner walls of these openings. A movable frame 4 is slidably mounted above the frame 1. A cylinder 5 is fixedly connected to the top of the frame 1. An opening is formed on the inner wall of the top of the movable frame 4, through which the cylinder 5 passes. A connecting frame 6 is fixedly connected to the end of the piston rod of the cylinder 5. The connecting frame 6 is fixedly connected to the upper surface of the movable frame 4. A fixed... The frame 7 has a motor 8 fixedly connected to its side wall. Two rotating shafts 9 are rotatably connected to the side wall of the frame 1. The shaft walls of the two rotating shafts 9 are respectively fixedly fitted with first gears 10. The ends of multiple rolling rollers 3 extend to the outside of the movable frame 4 and are fixedly fitted with second gears 11. The multiple second gears 11 are respectively meshed with the two first gears 10. The output shaft of the motor 8 is fixedly connected to the end of one of the rotating shafts 9. Multiple annular pressure grooves are respectively opened on the roller walls of the multiple rotating rollers 2 and the multiple rolling rollers 3.
[0021] A controller 12 is fixedly connected to the side wall of the frame 1. A support frame 13 is fixedly connected to the inner wall of the frame 1 above the controller 12. A connecting conduit 14 is electrically connected to the top of the controller 12. Multiple rotating rollers 2 have through holes in their interiors. Heating tubes 15 are inserted into the interiors of the multiple rotating rollers 2. The connecting conduit 14 is electrically connected to the heating tubes 15. The wall of the heating tube 15 is fixedly connected to the inner wall of the support frame 13.
[0022] In summary: by activating cylinder 5, the piston rod of cylinder 5 extends and retracts, causing the connecting frame 6 and the movable frame 4 to move up and down, thereby adjusting the distance between the rolling roller 3 and the rotating roller 2. According to the size of the pencil rod and the forming requirements, the rolling roller 3 is adjusted to a suitable position so that the pencil rod material can pass smoothly between the rotating roller 2 and the rolling roller 3 and be rolled.
[0023] The motor 8 is started, and its output shaft drives the connected rotating shaft 9 to rotate. The first gear 10 on the rotating shaft 9 rotates accordingly. The first gear 10 meshes with the second gear 11 at the end of the rolling roller 3, transmitting power to the rolling roller 3, causing multiple rolling rollers 3 to rotate synchronously. The pencil rod material is placed on the rotating roller 2. As the rotating roller 2 and the rolling roller 3 rotate, the material is squeezed between them. The annular pressure grooves on the roller walls of the rotating roller 2 and the rolling roller 3 cooperate with each other to gradually roll the cylindrical pencil rod material into a hexagon. During the rolling process, the rolling rollers 3 and rotating roller 2 at multiple stations work together to ensure the shape accuracy and surface quality of the pencil rod.
[0024] The controller 12 is electrically connected to the heating tube 15 inside the rotating roller 2 via the connecting conduit 14. The operator can set the appropriate temperature and heating time on the controller 12 according to the characteristics of the pencil rod material and the molding requirements. The heating tube 15 is fixed to the inner wall of the support frame 13 to ensure its stable position and that the heat can be evenly transferred to the rotating roller 2. When the heating tube 15 is powered on, it generates heat, which is transferred to the rotating roller 2, causing the surface temperature of the rotating roller 2 to rise. When the pencil rod material comes into contact with the heated rotating roller 2, the material softens due to the heat, its plasticity is enhanced, and it is easier to be molded under the action of the rolling roller 3.
[0025] To ensure the stability of the heating and rolling process, such as Figure 1-3 As shown, the two ends of the roller 2 extend into the interior of the support frame 13 and are fixedly fitted with retaining rings 16. The sidewalls of the retaining rings 16 are slidably mounted on the sidewalls of the frame 1. The two second gears 11 extend into the interior of the fixed frame 7 and mesh with the first gear 10.
[0026] The retaining rings 16 at both ends of the roller 2 slide inside the support frame 13 to prevent the roller 2 from axial displacement during rotation and to ensure the stability of the heating and rolling process.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A multi-station rolling die for forming hexagonal pencil shafts, comprising a frame (1), characterized in that: The machine frame (1) is internally connected to multiple rotating rollers (2). Multiple slotted openings are provided on the inner wall of the top of the machine frame (1). Roller rollers (3) are slidably mounted on the inner walls of the slotted openings. A movable frame (4) is slidably mounted above the machine frame (1). A cylinder (5) is fixedly connected to the top of the machine frame (1). An opening is provided on the inner wall of the top of the movable frame (4). The cylinder (5) passes through the opening. A connecting frame (6) is fixedly connected to the piston rod end of the cylinder (5). The connecting frame (6) is fixedly connected to the upper surface of the movable frame (4). A fixed frame (7) is fixedly connected to the side wall of the frame (4), and a motor (8) is fixedly connected to the side wall of the fixed frame (7). Two rotating shafts (9) are rotatably connected to the side wall of the frame (1). A first gear (10) is fixedly sleeved on the shaft wall of the two rotating shafts (9). The ends of the multiple rolling rollers (3) extend to the outside of the movable frame (4) and are fixedly sleeved with a second gear (11). The multiple second gears (11) are respectively meshed with the two first gears (10). The output shaft of the motor (8) is fixedly connected to the end of one of the rotating shafts (9).
2. The multi-station rolling die for forming hexagonal pencil shafts according to claim 1, characterized in that: Multiple annular grooves are respectively opened on the roller walls of the multiple rotating rollers (2) and the multiple rolling rollers (3).
3. The multi-station rolling die for forming hexagonal pencil shafts according to claim 1, characterized in that: A controller (12) is fixedly connected to the side wall of the frame (1). A support frame (13) is fixedly connected to the inner wall of the frame (1) above the controller (12). A connecting pipe (14) is electrically connected to the top of the controller (12). Through holes are opened in the interior of the multiple rotating rollers (2). Heating tubes (15) are inserted into the interior of the multiple rotating rollers (2). The connecting pipe (14) is electrically connected to the heating tubes (15).
4. The multi-station rolling die for forming hexagonal pencil shafts according to claim 3, characterized in that: The wall of the heating tube (15) is fixedly connected to the inner wall of the support frame (13).
5. The multi-station rolling die for forming hexagonal pencil shafts according to claim 1, characterized in that: The two ends of the roller (2) extend into the interior of the support frame (13) and are fixedly fitted with retaining rings (16), the sidewalls of the retaining rings (16) being slidably disposed on the sidewalls of the frame (1).
6. The multi-station rolling die for forming hexagonal pencil shafts according to claim 1, characterized in that: Two of the second gears (11) extend into the interior of the fixing frame (7) and mesh with the first gear (10).