Wooden stick cutting thread opening machine

Abstract

The utility model discloses a kind of wood stick cutting open thread machines, including rack and transmission mechanism set on it, cutting mechanism, thread opening mechanism and ball head cutting device are sequentially arranged along transmission direction.The thread opening mechanism includes rotary clamping mechanism, cutting device, radial feed device and axial feed device, wood stick is rotated by rotary clamping mechanism drive, simultaneously by radial and axial feed device synthesis helical feed movement, make cutting wheel cut thread on wood stick surface.The utility model uses high-speed rotating cutting wheel to replace traditional lathe tool, with tool life long, easy to assemble and adjust, running stable and the like, realize the full-process automation production of wood stick cutting, thread opening and ball head processing, greatly improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wood processing machinery technology, specifically to a wood stick cutting and threading machine. Background Technology

[0002] In the production of wooden products such as mop handles and broom handles, it is often necessary to machine external threads at the ends for screwing into other components. The more traditional method is to use a lathe with a forming tool for cutting. This method relies on the operator's skill, manually controls the feed, has extremely low processing efficiency, and it is difficult to guarantee the consistency of thread quality.

[0003] Therefore, currently, automated specialized equipment is mostly used, such as the "Automatic Wood Stick Cutting and Threading Machine" disclosed in patent document CN203471884U. This machine uses a rotating drum with a stick-feeding groove to transport wood sticks, and symmetrically arranged circular saw discs to cut the wood sticks to a fixed length at both ends. A longitudinally movable turning carriage is used, equipped with a high-speed rotating tool holder containing a fixed cutting tool. During processing, the machine clamps and fixes the wood stick, and the rotation of the tool holder combined with the overall longitudinal feed motion causes the fixed cutting tool to cut a thread trajectory on the surface of the wood stick. Although this prior art achieves automation, its threading structure has certain drawbacks. First, the cutting tool has a V-shaped structure, which wears extremely quickly when cutting wood fibers at high speed, requiring frequent machine stops for professional replacement and sharpening, resulting in high maintenance costs and impacting continuous production. Second, the installation and setting of the cutting tool is extremely cumbersome, requiring precise adjustment of the tool holder, adjusting screws, and pressure plates to ensure the accurate position and angle of the tool tip, demanding high operator skills. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a wooden stick cutting and threading machine. The machine has a long blade life, is easy to install and adjust, and can achieve high-efficiency automated production.

[0005] A wood stick cutting and threading machine includes a frame, on which a cutting mechanism and a transmission mechanism are mounted. The frame also includes a threading mechanism, which comprises a rotary clamping mechanism, a cutting device, a radial feed device, and an axial feed device. The rotary clamping mechanism clamps and drives the wood stick to be processed to rotate around its own axis at the threading station. The cutting device includes a cutting wheel and a first motor for driving the cutting wheel. The radial feed device drives the cutting wheel to feed and retract radially along the wood stick. The axial feed device drives the cutting wheel to move axially along the wood stick, and the cutting device is mounted on the axial feed device. The combined motion of the radial feed device and the axial feed device causes the cutting wheel to form a helical cutting trajectory relative to the rotating wood stick.

[0006] Furthermore, the frame is provided with an inclined base that is tilted relative to the horizontal plane. A radial feed device is installed on the inclined base. The radial feed device includes a lifting platform and several first cylinders. The cylinder body of the first cylinder is connected to the lifting platform, and the piston rod is fixed to the inclined base.

[0007] Furthermore, the axial feed device is a linear module fixedly installed on the lifting platform, and the first motor is installed on the linear module. The axial direction of the first motor and the moving direction of the linear module form an angle.

[0008] Furthermore, the rotary clamping mechanism includes at least three sets of clamping units arranged along the axial direction of the wooden stick. At least one set of driving units includes a second cylinder, a second motor, several upper pressure rollers and at least one lower support roller. The upper pressure rollers are rotatably connected to the lower end of the second cylinder, and the second motor is connected to the lower support roller through a transmission mechanism.

[0009] Furthermore, the thread-opening mechanism also includes an axial positioning assembly, which includes a positioning plate disposed in front of the cutting wheel in the feed direction and a first flattening cylinder capable of pushing the wooden stick toward the positioning plate.

[0010] Furthermore, the first motor is a servo motor, and the cutting wheel is mounted on the output shaft of the servo motor.

[0011] Furthermore, along the conveying direction of the transmission mechanism, a ball-end cutting device is provided after the threading mechanism. The ball-end cutting device includes a third motor, a ball-end cutting blade, a sliding table, and a third cylinder located on the opposite side of the cutting device. The third cylinder drives the sliding table to move along the axial direction of the wooden stick. The third motor is mounted on the sliding table, and the ball-end cutting blade is mounted on the main shaft of the third motor to cut the end of the wooden stick into a hemispherical shape.

[0012] Furthermore, at the corresponding workstation of the ball head cutting device, a fourth cylinder, a pressure block, and a support wheel are provided on both sides of the transmission mechanism. The support wheel is rotatably mounted on the frame, and the pressure block is connected to the lower end of the piston rod of the fourth cylinder for pressing the wooden stick.

[0013] Furthermore, along the conveying direction of the transmission mechanism, the cutting mechanism is located before the threading mechanism. The cutting mechanism includes two sets located on both sides of the transmission mechanism, each including a fourth motor and a saw blade. The saw blade is connected to the main shaft of the fourth motor and is used to cut the two ends of the wooden stick flush.

[0014] Furthermore, a second flattening cylinder is provided in front of the cutting mechanism, and a baffle is provided on the opposite side for pushing the aligned wooden sticks.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. A high-speed rotating cutting wheel is used to replace the traditional fixed cutting tool. Through rolling and intermittent cutting, wear is evenly distributed, significantly extending the tool life.

[0017] 2. The cutting wheel is directly mounted on the output shaft of the servo motor, and together with the radial and axial feed devices, it realizes helical cutting. This eliminates the complicated tool setting and adjustment steps of traditional lathe tools, making installation and adjustment simple and replacement quick, which greatly improves production efficiency.

[0018] 3. By integrating multiple processes such as cutting, threading, and ball head processing into one unit, and with the help of the transmission mechanism and the positioning and clamping mechanism at each station, the entire process of production from feeding wooden sticks to discharging finished products is automated, which greatly improves production efficiency and product quality consistency. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 yes Figure 1 A schematic diagram of the transmission mechanism and the threading mechanism.

[0021] Figure 3 This is a schematic diagram from another perspective of the thread-opening mechanism.

[0022] Figure 4 yes Figure 1 A schematic diagram of the rotary clamping mechanism.

[0023] Figure 5 yes Figure 1 A schematic diagram of the cutting mechanism.

[0024] Figure 6 yes Figure 1 A schematic diagram of the ball head cutting device.

[0025] Figure 7 yes Figure 6 A schematic diagram of the structure of a ball end mill.

[0026] Figure 8 yes Figure 2 A cross-sectional view of the cutting wheel.

[0027] The diagram is labeled as follows: 1. Frame; 101. Inclined base; 102. Baffle; 2. Transmission mechanism; 3. Cutting mechanism; 301. Fourth motor; 302. Saw blade; 4. Chip removal groove; 5. Threading mechanism; 501. Lifting platform; 502. First cylinder; 503. Linear module; 504. First motor; 505. Cutting wheel; 506. First flattening cylinder; 507. Positioning plate; 6. Ball head cutting device; 601. Sliding table; 602. Third cylinder; 603. Third motor; 604. Ball head cutting blade; 605. Fourth cylinder; 606. Pressure block; 607. Support wheel; 7. Rotary clamping mechanism; 701. Second motor; 702. Lower support roller; 703. Upper pressure roller; 704. Second cylinder; 8. Second flattening cylinder. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or the number of indicated technical features.

[0030] like Figure 1 As shown, the wooden stick cutting and threading machine of this embodiment includes a frame 1, a transmission mechanism 2 is provided on the frame 1, and a cutting mechanism 3, a threading mechanism 5 and a ball head cutting device 6 are sequentially provided on the frame 1 along the transmission direction of the transmission mechanism 2.

[0031] The transmission mechanism 2 includes two sets of parallel transmission chains driven by a motor. The two ends of the wooden stick are supported on the chains and are driven by the chains to transport it to each processing station.

[0032] like Figure 5 As shown, the cutting mechanism 3 is located at the feeding station at the front of the equipment and is used to cut the raw wood to a fixed length. The cutting mechanism 3 includes two sets located on both sides of the transmission mechanism 2, each including a fourth motor 301 and a saw blade 302. The saw blade 302 is connected to the main shaft of the fourth motor 301 and is used to cut the two ends of the wooden stick flush. A second flattening cylinder 8 is provided in front of the cutting mechanism 3, and a baffle 102 is provided on the opposite side for pushing and aligning the wooden stick. A chip discharge groove 4 is also provided at a corresponding position on the frame 1 for discharging the wood chips generated during processing.

[0033] like Figure 2 and Figure 3As shown, the thread-opening mechanism 5 is located at the next station after the cutting mechanism 3. The thread-opening mechanism 5 includes a rotary clamping mechanism 7, a cutting device, a radial feed device, and an axial feed device.

[0034] like Figure 4 As shown, the rotary clamping mechanism 7 is used to clamp and drive the wooden stick to be processed to rotate around its own axis at the threaded station. The rotary clamping mechanism 7 includes at least three sets of clamping units arranged along the axial direction of the wooden stick. At least one set is a driving unit including a second cylinder 704, a second motor 701, several upper pressure rollers 703, and at least one lower support roller 702. The upper pressure rollers 703 are rotatably connected to the lower end of the second cylinder 704. The second motor 701 is connected to the lower support roller 702 through a transmission mechanism. During clamping, both the upper pressure rollers 703 and the lower support roller 702 are tangent to the outer surface of the wooden stick. The second motor 701 drives the lower support roller 702 to rotate actively through the transmission mechanism, thereby driving the clamped wooden stick to rotate uniformly around its own axis. The transmission mechanism is a chain drive mechanism.

[0035] The cutting device includes a cutting wheel 505 and a first motor 504 for driving the cutting wheel 505. The first motor 504 driving the cutting wheel 505 to rotate is a servo motor, and the cutting wheel 505 is mounted on the output shaft of the servo motor. Figure 8 As shown, the cross-sectional profile of the cutting edge of the cutting wheel 505 is triangular.

[0036] The radial feed device is used to drive the cutting wheel 505 to feed and retract radially along the wooden stick; the axial feed device is used to drive the cutting wheel 505 to move axially along the wooden stick, and the cutting device is mounted on the axial feed device; wherein, the combined motion of the radial feed device and the axial feed device causes the cutting wheel 505 to form a spiral cutting trajectory relative to the rotating wooden stick.

[0037] The frame 1 is equipped with an inclined base 101 that is tilted relative to the horizontal plane. A radial feed device is mounted on the inclined base 101. The radial feed device includes a lifting platform 501 and several first cylinders 502. The cylinder body of the first cylinder 502 is connected to the lifting platform 501, and the piston rod is fixed to the inclined base 101. Driven by the first cylinders 502, the tool advances when the lifting platform is in contact with the inclined base 101, and retracts when the lifting platform moves away from the inclined base 101. The axial feed device is a linear module 503 fixedly mounted on the lifting platform 501. A first motor 504 is mounted on the linear module 503, and the axial direction of the first motor 504 forms an angle with the moving direction of the linear module 503.

[0038] The thread-cutting mechanism 5 also includes an axial positioning assembly, which includes a positioning plate 507 located in front of the cutting wheel 505 in the feed direction and a first flattening cylinder 506 that can push the wooden stick toward the positioning plate 507 to ensure accurate axial machining reference.

[0039] During thread cutting, the rotary clamping mechanism 7 drives the wooden stick to rotate at a uniform speed, while the linear module 503 drives the cutting wheel 505 to move along the axial direction of the wooden stick. The first cylinder 502 drives the lifting platform 501 to move along the inclined base 101, realizing the radial feed of the cutting wheel 505. The combination of these two movements enables the cutting wheel 505 to form a precise helical cutting trajectory relative to the rotating wooden stick, thus machining continuous threads on the surface of the wooden stick. This mechanical motion synthesis structure can stably and reliably machine continuous and uniform threads without complex CNC programming. It has a simple structure and is easy to control.

[0040] like Figure 6 and Figure 7 As shown, the ball-end cutting device 6 is located at the final discharge station and is used to process a hemispherical structure at the end of the wooden stick. This device includes a third motor 603, a ball-end cutting blade 604, a sliding table 601, and a third cylinder 602 located opposite the cutting device. The third cylinder 602 drives the sliding table 601 to move axially along the wooden stick. The third motor 603 is mounted on the sliding table 601, and the ball-end cutting blade 604 is mounted on the spindle of the third motor 603. The ball-end cutting blade 604 includes a cylindrical blade body that can be inserted into the wooden stick, and a blade with a hemispherical cavity, thereby enabling the end of the wooden stick to be processed into a hemispherical structure.

[0041] At the corresponding workstation of the ball head cutting device 6, the transmission mechanism 2 is provided with a fourth cylinder 605, a pressure block 606 and a support wheel 607 on both sides. The support wheel 607 is rotatably mounted on the frame 1. The pressure block 606 is connected to the lower end of the piston rod of the fourth cylinder 605 and is used to press the wooden stick.

[0042] During processing, the fourth cylinder 605 drives the pressure block 606 to press down, firmly pressing the wooden stick onto the support wheel 607. The third motor 603 drives the ball head cutting tool 604 to rotate at high speed. At the same time, the third cylinder 602 pushes the sliding table 601 to feed along the axial direction of the wooden stick, completing the ball head cutting process.

[0043] The working principle of this utility model is as follows: the raw wood is conveyed to the cutting mechanism 3 through the transmission mechanism 2, and after being cut to a fixed length, it becomes a standard length of wood stick segment; the cut wood stick continues to be conveyed to the threading mechanism 5, which is fixed and driven to rotate by the rotating clamping mechanism 7, while the cutting device completes the threading under the drive of the radial feed device and the axial feed device; finally, the wood stick is sent to the ball head cutting device 6, where a hemispherical structure is processed at one end and then discharged, completing the entire processing process.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 wooden stick cutting and thread-cutting machine, comprising a frame, wherein the frame is equipped with a cutting mechanism and a conveying mechanism, characterized in that, The frame is also provided with a thread-opening mechanism, which includes: A rotary clamping mechanism is used to clamp and drive the wooden stick to be processed to rotate around its own axis at the threaded station. A cutting device, comprising a cutting wheel and a first motor for driving the cutting wheel; Radial feed device, used to drive the cutting wheel to feed and retract radially along the wooden stick; An axial feed device is used to drive the cutting wheel to move along the axial direction of the wooden stick, and the cutting device is mounted on the axial feed device; The combined motion of the radial feed device and the axial feed device causes the cutting wheel to form a helical cutting trajectory relative to the rotating wooden stick.

2. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, The frame is provided with an inclined base that is tilted relative to the horizontal plane. The radial feed device is installed on the inclined base. The radial feed device includes a lifting platform and several first cylinders. The cylinder body of the first cylinder is connected to the lifting platform, and the piston rod is fixed to the inclined base.

3. The wooden stick cutting and thread-cutting machine according to claim 2, characterized in that, The axial feed device is a linear module fixedly installed on the lifting platform. The first motor is installed on the linear module, and the axial direction of the output shaft of the first motor and the moving direction of the linear module form an angle.

4. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, The rotary clamping mechanism includes at least three sets of clamping units arranged along the axial direction of the wooden stick. At least one set of driving units includes a second cylinder, a second motor, several upper pressure rollers and at least one lower support roller. The upper pressure rollers are rotatably connected to the lower end of the second cylinder, and the second motor is connected to the lower support rollers through a transmission mechanism.

5. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, The threading mechanism also includes an axial positioning component, which includes a positioning plate disposed in front of the cutting wheel in the feed direction and a first flattening cylinder that can push the wooden stick toward the positioning plate.

6. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, The first motor is a servo motor, and the cutting wheel is mounted on the output shaft of the servo motor.

7. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, Along the conveying direction of the transmission mechanism, a ball-end cutting device is provided after the threading mechanism. The ball-end cutting device includes a third motor, a ball-end cutting blade, a sliding table, and a third cylinder located on the opposite side of the cutting device. The third cylinder drives the sliding table to move along the axial direction of the wooden stick. The third motor is mounted on the sliding table. The ball-end cutting blade is mounted on the main shaft of the third motor and is used to cut the end of the wooden stick into a hemispherical shape.

8. The wooden stick cutting and thread-cutting machine according to claim 7, characterized in that, At the corresponding workstation of the ball head cutting device, a fourth cylinder, a pressure block, and a support wheel are provided on both sides of the transmission mechanism. The support wheel is rotatably mounted on the frame, and the pressure block is connected to the lower end of the piston rod of the fourth cylinder for pressing the wooden stick.

9. The wooden stick cutting and thread-cutting machine according to claim 1, characterized in that, Along the conveying direction of the transmission mechanism, the cutting mechanism is located before the threading mechanism. The cutting mechanism includes two sets located on both sides of the transmission mechanism, each including a fourth motor and a saw blade. The saw blade is connected to the main shaft of the fourth motor and is used to cut the two ends of the wooden stick flush.

10. The wooden stick cutting and thread-cutting machine according to claim 9, characterized in that, The cutting mechanism is equipped with a second flattening cylinder in front of it and a baffle on the opposite side for pushing the aligned wooden sticks.

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