A log mirror frame fixed-length sawing device and method

Abstract

The present application relates to sawing device technical field, especially to a kind of log mirror frame fixed-length sawing device and method, including workbench, workbench is equipped with the sawing assembly that can automatically move back and forth, workbench top is fixedly connected with a pair of guide rail, workbench top is equipped with sliding table, sliding table is slidably connected between two guide rails, sliding table top is equipped with fixed-length table, the setting of the present application through conversion mechanism and limiting mechanism, initial state, fixed-length table is transversely arranged, T type conversion pin is limited in T type straight slot, pushing mechanism can transversely push log to complete fixed-length cutting, when needing to carry out thickness sawing, after releasing the fixed position of fixed-length table, transversely pull fixed-length table, T type conversion pin is slid along T type straight slot to the other end, expand the distance between fixed-length table and workbench upper table, then overturn ninety degrees and relock, fixed-length table is converted from transverse posture to longitudinal posture, the structure makes single device integration transverse fixed-length and longitudinal thickness two sawing modes.

Description

Technical Field

[0001] This invention relates to the field of sawing equipment technology, and in particular to a fixed-length sawing device and method for log mirror frames. Background Technology

[0002] The log frame fixed-length sawing device is a hand-push sawing machine used for wood processing. It is mainly used to precisely saw logs or boards to a set length to meet the fixed-length processing needs of wooden products such as mirror frames. The device consists of a frame base, a worktable, a sliding rail for the push table, a circular saw cutting mechanism, a guide ruler positioning component, and a drive motor. The worktable is laid on top of the frame and has guide rails on its surface for the push table to slide back and forth. The guide ruler is installed on one side of the worktable to abut against the end face of the wood to achieve fixed-length reference positioning. The circular saw cutting mechanism is embedded in the middle of the worktable, and the saw blade is driven by the motor to rotate at high speed. In use, the operator places the wood to be sawed on the worktable, so that the end of the wood is close to the guide ruler to determine the sawing length. Then, the operator pushes the push table to move the wood along the slide rail towards the saw blade at a uniform speed. The rotating saw blade cuts the wood. After the fixed-length sawing is completed, the push table is returned and the finished product can be taken out.

[0003] In the processing of log mirror frames, two processes need to be completed sequentially: fixed-length cutting and fixed-length layer sawing. The existing hand-push fixed-length sawing device consists of a fixed worktable, a one-way slide rail, and a circular saw mechanism. Its push table only slides in a single transverse direction, and the saw blade axis is parallel to the longitudinal direction of the worktable. It can only achieve transverse cutting in the length direction of the wood. When the processing of the mirror frame enters the fixed-length thickness sawing stage, the wood needs to be transferred to a longitudinally fed band saw or planer. Layer processing in the thickness direction is completed by pushing back and forth. Since the feed direction of the existing device is fixed and the sawing posture is not adjustable, a single device cannot handle both transverse fixed-length and longitudinal thickness sawing modes. Multiple special machine tools need to be configured on the production site and materials need to be transferred frequently. This defect leads to interruption of process connection, increased equipment footprint, accumulation of repeated clamping and positioning errors of workpieces, and long adjustment time for changing lines for different specifications of mirror frames. It is difficult to adapt to the production needs of small batches and multiple varieties, which restricts the improvement of processing efficiency and site utilization.

[0004] Therefore, a log frame fixed-length sawing device and method are proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a fixed-length sawing device and method for log mirror frames.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a log frame fixed-length sawing device, including a worktable, a sawing component that can move automatically back and forth on the worktable, a pair of guide rails fixedly connected to the top of the worktable, a sliding table on the top of the worktable, the sliding table being slidably connected between the two guide rails, a fixed-length platform above the sliding table, a fixed frame on the fixed-length platform, a pushing mechanism for pushing the log sawing on the fixed frame, a conversion mechanism for adjusting the position of the fixed-length platform, and a limiting mechanism for limiting the position on the fixed frame; The conversion mechanism includes a pair of T-shaped conversion pins, each fixedly connected to the top of the sliding table. A pair of T-shaped straight slots are formed at the bottom of the fixed-length table, and the T-shaped conversion pins are inserted into the inner sides of these slots. A quarter-circle arc-shaped T-shaped arc slot is formed on the rear side of the front T-shaped straight slot, with the center of the arc slot being the same as the center of the side end of the rear T-shaped straight slot. A front plate is fixedly connected to the front end of the fixed frame on the side away from the sawing assembly. The conversion mechanism and the limiting... In the initial state, the fixed-length table is arranged horizontally, and the T-shaped conversion pin is located in the T-shaped straight groove. The pushing mechanism can push the log horizontally to complete the fixed-length cutting. When thickness sawing is required, the fixed-length table is released from its fixed position and pulled horizontally. The T-shaped conversion pin slides along the T-shaped straight groove to the other end, increasing the distance between the fixed-length table and the upper platform of the workbench. Then, it is rotated 90 degrees and locked again, and the fixed-length table changes from a horizontal posture to a vertical posture. This structure allows a single device to integrate two sawing modes: horizontal fixed-length and vertical thickness sawing.

[0007] In the above technical solution, further, the limiting mechanism includes a pair of long bolts, both of which are threaded through the fixed frame. The top of the sliding table and the worktable are each provided with an upper threaded hole relative to the position below the long bolts. The bottom ends of the long bolts are threaded through the bottom of the fixed-length platform and connected to the upper threaded holes. The top of the fixed-length platform has a pair of slide rail grooves. The bottom of the fixed frame is fixedly connected to a pair of slide rail blocks, which are slidably connected to the inside of the slide rail grooves. A positioning pin is threaded through the top of the fixed frame, and the bottom end of the positioning pin passes through one of the slide rail grooves. The bottom of the rail block is set, and the bottom of the positioning screw abuts against the bottom of one of the slide rail grooves. Both the length-fixing table and the worktable are equipped with guide components for squeezing logs for sawing positioning. A rear plate is fixedly connected to the rear side of the length-fixing table. A pair of rear holes are opened through the top of the rear plate. Short bolts are inserted into the rear holes. After conversion, the rear plate is rotated above the upper threaded hole. Then, the short bolts are rotated and threaded into the upper threaded hole on the sliding table. The setting of the limiting mechanism can limit the position of the rear sliding table and the length-fixing table, ensuring the stability of the equipment during the sawing process.

[0008] In the above technical solution, the pushing mechanism further includes a drive motor, a drive frame is fixedly connected through the top of the worktable, a drive block is slidably connected laterally inside the drive frame, a lower L-shaped plate is fixedly connected to the side wall of the drive block, an upper electromagnet and a lower L-shaped electromagnet are fixedly connected to the top of the lower L-shaped plate respectively, a side frame is fixedly connected to the side wall of the fixed length table, the bottom end of the fixed frame is connected through the inside of the side frame, a pushing plate is slidably connected laterally inside the fixed frame, an upper roller is rotatably connected to the side of the fixed frame away from the sawing assembly, a lower roller is rotatably connected to the side of the side frame away from the fixed frame, a steel wire rope is provided inside the fixed frame, a through hole is opened through the side wall of the pushing plate, an upper block is slidably connected laterally inside the side frame, the drive motor is fixedly connected to the rear side of the drive frame, the top of the upper electromagnet is flush with the bottom end of the sliding table, a threaded rod is rotatably connected to the inside of the drive frame, the threaded rod is threadedly connected to the inner side wall of the drive block, and the output end of the drive motor is fixedly connected to the side wall of the threaded rod through the inside of the drive frame. The lower L-shaped electromagnet is positioned below the upper block, which is made of iron. A pair of side rollers are rotatably connected to the inner side of the fixed frame and near the sawing assembly. A side plate is fixedly connected to the bottom of the fixed frame relative to the inner position of the side frame. A bottom roller is rotatably connected to the side wall of the side plate. The other end of the wire rope passes through the through hole. One end of the wire rope is fixedly connected to the side wall of the pusher plate, and the other end passes sequentially through the outer wall of the upper roller, the through hole, and the outer wall of one of the side rollers, then passes through the bottom of the bottom roller, then loops back from the outer wall of the lower roller, then through the bottom of the bottom roller and the outer wall of the other side roller, and finally is fixedly connected to the other end of the pusher plate. The upper block is fixedly connected to the wire rope. The top of the lower L-shaped electromagnet is flush with the bottom of the side frame, and the bottom of the upper block is flush with the bottom of the side frame. The sliding table is made of iron. By linking the pusher mechanism with the length-fixing table, automatic feed adaptation under different sawing modes is achieved. During transverse sawing, the pusher mechanism pushes the log to move laterally along the length-fixing table, and works with the back-and-forth sliding of the cutting saw to complete the length-fixed cut. When the length-fixing table is flipped to the longitudinal position, the pusher mechanism is adjusted synchronously so that it can drive the sliding table and the length-fixing table to move automatically back and forth along the longitudinal direction. The log is fed synchronously with the table, and the sawing component only needs to be fixed in position to complete the sawing operation in the thickness direction.

[0009] A method for sawing log frames to a fixed length includes the following steps; Step 1: When sawing horizontally, the log is placed on the fixed-length platform, and the log is moved by the pusher mechanism. The sawing assembly is used to saw the log horizontally to achieve fixed-length sawing of the log frame. Step 2: When longitudinal sawing is required, first release the movement restriction of the fixed length table through the limiting mechanism, then pull the fixed length table laterally. At this time, the T-shaped conversion pin slides in the T-shaped straight groove. Then rotate the fixed length table forward, while driving one of the T-shaped conversion pins to slide in the T-shaped arc groove, thereby completing the adjustment of the fixed length table's direction. Finally, lock the fixed length table position mechanism through the limiting mechanism. Step 3: When sawing longitudinally, first adjust the position of the fixed frame, then place the log next to the fixed frame, and then control the pushing mechanism to drive the sliding table and the fixed length table to the rear side to achieve fixed-length sawing of the log thickness.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the setting of a conversion mechanism and a limiting mechanism, initially has a fixed-length platform arranged horizontally, with the T-shaped conversion pin limited within the T-shaped straight groove. The pushing mechanism can horizontally push the log to complete the fixed-length cutting. When thickness sawing is required, the fixed-length platform is released from its fixed position and horizontally pulled out. The T-shaped conversion pin slides along the T-shaped straight groove to the other end, increasing the distance between the fixed-length platform and the upper platform of the workbench. Then, it is rotated 90 degrees and relocked, and the fixed-length platform changes from a horizontal posture to a vertical posture. This structure allows a single device to integrate two sawing modes: horizontal fixed-length and vertical thickness sawing. There is no need to change equipment or transfer workpieces, effectively reducing the equipment footprint and process connection time, improving the space utilization of the production site and the processing adaptability of various types of frames.

[0011] 2. This invention achieves automatic feed adaptation under different sawing modes through the linkage adjustment of the pushing mechanism and the fixed-length table. During transverse sawing, the pushing mechanism pushes the log to move laterally along the fixed-length table, and works in conjunction with the forward and backward sliding of the cutting saw to complete the fixed-length cut. When the fixed-length table is flipped to the longitudinal position, the pushing mechanism is adjusted synchronously so that it can drive the sliding table and the fixed-length table to move automatically forward and backward along the longitudinal direction. The log is fed synchronously with the table, and the sawing component only needs to be fixed in position to complete the sawing operation in the thickness direction. This design avoids the speed fluctuations and positioning deviations caused by manual pushing of the table, so that both transverse and longitudinal sawing can obtain stable and uniform automatic feed, improve the consistency of cut quality, and at the same time reduce the labor intensity of the operator and the safety risks of close-range pushing. Attached Figure Description

[0012] Figure 1 This is a front perspective view of the sawing device of the present invention; Figure 2 This is a rear-view perspective structural diagram of the sawing assembly, guide rail, and length-fixing table of the present invention. Figure 3 This is a frontal perspective view of the sawing device of the present invention during longitudinal sawing; Figure 4This is a rear-view three-dimensional structural diagram of the sawing device of the present invention during longitudinal sawing; Figure 5 Appendix of the present invention Figure 4 A magnified view of the structure at point A in the middle; Figure 6 This is a bottom-view three-dimensional structural diagram of the fixed-length platform and sliding platform of the present invention. Figure 7 This is a full-section three-dimensional structural diagram of the drive frame of the present invention. Figure 8 This is a schematic diagram of the overall appearance structure of the sliding table of the present invention; Figure 9 This is a schematic diagram of the overall appearance structure of the pusher plate, wire rope and upper block of the present invention; Figure 10 This is a bottom-view, three-dimensional structural diagram of the fixed frame, the fixed-length platform, and the long bolt of the present invention. Figure 11 Appendix of the present invention Figure 10 A magnified schematic diagram of the structure at point B in the middle.

[0013] In the diagram: 1. Workbench; 2. Sawing assembly; 3. Guide rail; 4. Sliding table; 5. Length-fixing table; 6. Fixed frame; 7. T-shaped conversion pin; 8. T-shaped straight groove; 9. T-shaped arc groove; 10. Slide rail groove; 11. Slide rail block; 12. Positioning pin; 13. Long bolt; 14. Upper threaded hole; 15. Drive motor; 16. Drive frame; 17. Drive block; 18. Lower L-shaped plate; 19. Upper electromagnet; 20. Lower L-shaped electromagnet; 21. Side frame; 22. Push plate; 23. Upper roller; 24. Lower roller; 25. Steel wire rope; 26. Through hole; 27. Upper block; 28. Side roller; 29. ​​Side plate; 30. Bottom roller; 31. Threaded rod; 32. Rear plate; 33. Rear hole; 34. Short bolt; 35. Guide assembly; 36. Front plate. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0016] In actual use, it was found that the existing equipment's push table only slides in a single transverse direction, and the saw blade axis is parallel to the longitudinal direction of the worktable 1. It can only achieve transverse cutting in the length direction of the wood. When the processing of the mirror frame enters the thickness fixed length sawing stage, the wood needs to be transferred to a longitudinal feed band saw or planer. The thickness direction layering is completed by pushing back and forth. Since the feed direction of the existing device is fixed and the sawing posture is not adjustable, a single device cannot take into account both transverse fixed length and longitudinal thickness sawing modes. Multiple special machine tools need to be configured on the production site and materials need to be transferred frequently. This defect leads to interruption of process connection, increased equipment footprint, and accumulation of workpiece repeated clamping and positioning errors. To solve the above problems, the following structure was invented.

[0017] like Figures 1-11 The illustrated log frame sawing device includes a worktable 1, on which a sawing assembly 2 that can move automatically back and forth is mounted. A pair of guide rails 3 are fixedly connected to the top of the worktable 1. A sliding table 4 is mounted on the top of the worktable 1 and is slidably connected between the two guide rails 3. A length-fixing platform 5 is mounted above the sliding table 4. A fixing frame 6 is mounted on the length-fixing platform 5. The fixing frame 6 is equipped with a pushing mechanism for pushing the log for sawing and a conversion mechanism for adjusting the position of the length-fixing platform 5. The fixing frame 6 is also equipped with a limiting mechanism. The position limiting mechanism, the sawing component 2 consists of a cutting saw, a slide rail and a drive mechanism. The cutting saw is installed on the slide rail, and the drive mechanism drives the cutting saw to move back and forth along the slide rail. When sawing horizontally, the log is pushed horizontally by the pushing mechanism, and the cutting saw slides back and forth to complete the fixed length cut. When sawing vertically, the fixed length table 5 feeds vertically automatically, the cutting saw is fixed at a certain position on the slide rail, and the log moves with the fixed length table 5 and passes through the saw blade to complete the thickness sawing. This component can be adapted to both horizontal and vertical sawing modes by the adjustable movement of the cutting saw. The conversion mechanism includes a pair of T-shaped conversion pins 7, which are fixedly connected to the top of the sliding table 4. A pair of T-shaped straight grooves 8 are provided at the bottom of the fixed length table 5, and the T-shaped conversion pins 7 are inserted into the inner side of the T-shaped straight grooves 8. A quarter-circle arc T-shaped arc groove 9 is provided on the rear side of the T-shaped straight groove 8 located in front. The center of the arc groove 9 is the same as the center of the side end of the T-shaped straight groove 8 located in the rear. A front plate 36 is fixedly connected to the front end of the fixed frame 6 away from the sawing component 2. (It should be noted that after the front plate 36 is rotated and adjusted, it must not exceed the position of the side wall of the fixed length table 5. The length of the front plate 36 is the shortest dimension for sawing the log thickness, which can ensure the complete sawing of the log thickness.)

[0018] The length-fixing table 5 has a pair of slide rail grooves 10 at its top. The bottom of the fixed frame 6 is fixedly connected to a pair of slide rail blocks 11, which are slidably connected to the inside of the slide rail grooves 10. The top of the fixed frame 6 is threadedly connected to a positioning pin 12, the bottom of which passes through the bottom of one of the slide rail blocks 11 and abuts against the bottom of one of the slide rail grooves 10. Both the length-fixing table 5 and the worktable 1 are equipped with guide components 35 for positioning the logs for sawing. The guide components 35 consist of a pressing block, a guide rod, and an electric telescopic cylinder. The extrusion roller is installed on the upper end of the moving block, which is slidably connected to the side of the fixed-length platform 5 and the worktable 1. The electric telescopic cylinder is fixed inside the worktable 1 and the fixed-length platform 5, with its telescopic end connected to the moving block. In use, the electric telescopic cylinder drives the moving block to move towards each other, causing the extrusion roller to automatically approach and clamp the side wall of the log, achieving automatic positioning and fixing before sawing. After sawing, the electric telescopic cylinder drives in the opposite direction, and the moving block drives the extrusion roller to automatically release the log, achieving rapid clamping and release of the log without manual operation, improving positioning efficiency and operational safety.

[0019] The limiting mechanism includes a pair of long bolts 13. Both long bolts 13 are installed through the fixed frame 6. The top of the sliding table 4 and the worktable 1 are provided with upper threaded holes 14 at the position below the long bolts 13. The bottom of the long bolts 13 are threaded through the bottom of the fixed length platform 5 and connected to the upper threaded holes 14.

[0020] A rear plate 32 is fixedly connected to the rear side of the fixed length platform 5. A pair of rear holes 33 are opened through the top of the rear plate 32. Short bolts 34 are inserted into each of the rear holes 33. After the conversion is completed, the rear plate 32 is rotated to be above the upper threaded hole 14. Then, the short bolts 34 are rotated and threaded into the upper threaded hole 14 on the sliding table 4.

[0021] When performing a fixed-length transverse sawing of the frame log, the log is first placed behind the fixed frame 6, and then the log is moved by the pusher mechanism and positioned by the guide component 35. The frame log can then be sawed by the sawing component 2. When longitudinal sawing of logs is required, first unscrew the two long bolts 13 to release the movement restriction on the fixed length table 5. Then, pull the fixed length table 5 laterally. At this time, the T-shaped conversion pin 7 slides in the T-shaped straight groove 8 until the T-shaped conversion pin 7 moves to the other end of the T-shaped straight groove 8. Then, rotate the fixed length table 5 forward. At this time, one of the T-shaped conversion pins 7 will slide in the T-shaped arc groove 9, thereby completing the adjustment of the direction of the fixed length table 5. During the rotation, the back plate 32 will be rotated to the top of the threaded hole 14. After the adjustment is completed, connect the short bolt 34 to the threaded hole 14 on the sliding table 4 (the short bolt 34 is used to avoid the connection between the sliding table 4 and the worktable 1). Finally, when performing longitudinal fixed-length sawing on the log, first rotate the positioning screw 12 to release the pressure on the slide rail groove 10, thereby releasing the sliding restriction of the fixed frame 6. Then push the fixed frame 6 to slide backward (it should be noted that the fixed length table 5 is equipped with a scale to indicate the sliding position of the fixed frame 6). At the same time, the slide rail block 11 is driven to slide in the slide rail groove 10. After adjustment, rotate the positioning screw 12 in the opposite direction so that the bottom end of the positioning screw 12 abuts against the bottom end of the slide rail groove 10. Then place the log next to the fixed frame 6 and attach the end of the log to the rear end of the front plate 36. Then, control the pushing mechanism to drive the sliding table 4 and the fixed length table 5 to the rear side to achieve fixed-length sawing of the log.

[0022] In summary, through the design of the above structure, in the initial state, the fixed-length table 5 is arranged horizontally, and the T-shaped conversion pin 7 is confined within the T-shaped straight groove 8. The pushing mechanism can push the log horizontally to complete the fixed-length cutting. When thickness sawing is required, after the fixed-length table 5 is released from its fixed position, the fixed-length table 5 is pulled horizontally, and the T-shaped conversion pin 7 slides along the T-shaped straight groove 8 to the other end, increasing the distance between the fixed-length table 5 and the upper side table of the workbench 1. Then, it is rotated 90 degrees and locked again, and the fixed-length table 5 changes from a horizontal posture to a vertical posture. This structure enables a single device to integrate two sawing modes: horizontal fixed-length and vertical thickness sawing. There is no need to change equipment or transfer workpieces, which effectively reduces the equipment footprint and process connection time, improves the space utilization of the production site, and enhances the processing adaptability of various types of eyeglass frames.

[0023] Based on the above embodiments, it was found during use that although the above conversion structure can realize the posture conversion between horizontal fixed-length sawing and longitudinal thickness sawing of logs, the driving direction of the existing pusher structure is fixed, and it can only push the logs to move horizontally. When the fixed-length table 5 is flipped to the longitudinal posture for thickness sawing, the pusher structure cannot synchronously adapt to the longitudinal feed direction. The operator needs to manually push the fixed-length table 5 and the logs back and forth for sawing. It is difficult to maintain a uniform speed for manual pushing, which easily causes rough cuts and uneven wear of the saw blade. In addition, the operator's hands are close to the high-speed rotating saw blade, which poses a great safety hazard. This restricts the automation level and operational safety of the longitudinal sawing mode. To solve the above problems, the above structure has been further improved.

[0024] The feeding mechanism includes a drive motor 15, a drive frame 16 is fixedly connected through the top of the worktable 1, a drive block 17 is slidably connected to the inner side of the drive frame 16, a lower L-shaped plate 18 is fixedly connected to the side wall of the drive block 17, an upper electromagnet 19 and a lower L-shaped electromagnet 20 are fixedly connected to the top of the lower L-shaped plate 18 respectively, a side frame 21 is fixedly connected to the side wall of the fixed length table 5, the bottom end of the fixed frame 6 is connected through the interior of the side frame 21, a feeding plate 22 is slidably connected to the inner side of the fixed frame 6, an upper roller 23 is rotatably connected to the inner side of the fixed frame 6 away from the sawing assembly 2, a lower roller 24 is rotatably connected to the inner side of the side frame 21 away from the fixed frame 6, a steel wire rope 25 is provided inside the fixed frame 6, a through hole 26 is opened through the side wall of the feeding plate 22, an upper block 27 is slidably connected to the inner side of the side frame 21, the drive motor 15 is fixedly connected to the rear side of the drive frame 16, and the top of the upper electromagnet 19 is flush with the bottom of the sliding table 4.

[0025] The lower L-shaped electromagnet 20 is positioned below the upper block 27. The upper block 27 is made of iron. A pair of side rollers 28 are rotatably connected to the inner side of the fixed frame 6 and the side closest to the sawing assembly 2. A side plate 29 is fixedly connected to the bottom of the fixed frame 6 relative to the inner position of the side frame 21. A bottom roller 30 is rotatably connected to the side wall of the side plate 29. The other end of the wire rope 25 passes through the through hole 26. One end of the wire rope 25 is fixedly connected to the side wall of the pusher plate 22. The other end passes through the outer wall of the upper roller 23, the inside of the through hole 26, and the outer wall of one of the side rollers 28 in sequence. Then it passes through the bottom of the bottom roller 24, wraps back in the opposite direction, passes through the bottom of the bottom roller 30 and the outer wall of the other side roller 28, and is finally fixedly connected to the other end of the pusher plate 22. The upper block 27 is fixedly connected to the wire rope 25.

[0026] A threaded rod 31 is rotatably connected to the inside of the drive frame 16 (it should be noted that the drive frame 16 adopts a side opening method, which can reduce the impact of sawdust on the threaded rod 31). The threaded rod 31 is threaded through and connected to the inner wall of the drive block 17. The output end of the drive motor 15 passes through the inside of the drive frame 16 and is fixedly connected to the side wall of the threaded rod 31. The top of the lower L-shaped electromagnet 20 is flush with the bottom of the side frame 21, and the bottom of the upper block 27 is flush with the bottom of the side frame 21. The sliding table 4 is made of iron.

[0027] During transverse sawing, the drive motor 15 is first started to rotate the threaded rod 31, which in turn drives the threaded drive block 17 to slide in the drive frame 16. At the same time, the upper electromagnet 19 and the lower L-shaped electromagnet 20 are moved (at this time, the lower L-shaped electromagnet 20 is energized and thus is attracted to the upper block 27, which in turn drives the upper block 27 to move backward). At this time, the upper block 27 drives one end of the wire rope 25 to move backward, which in turn pulls the wire rope 25 under the guidance of the bottom roller 30 and the side roller 28, pulling the pusher plate 22 to slide within the fixed frame 6, thereby moving the pusher plate 22 to the fixed length table. 5. At the designated position (it should be noted that an encoder is provided at one end of the threaded rod 31. When the drive motor 15 drives the threaded rod 31 to rotate, the encoder provides real-time feedback on the number of rotations. The linear displacement of the drive block 17 is calculated, thereby achieving precise closed-loop control of the moving distance of the push plate 22 or the sliding table 4), the log is then placed behind the fixed frame 6 and attached to the side wall of the push plate 22. Then, the drive motor 15 can be controlled to continue running, thereby driving the push plate 22 to move and push the log to move at a fixed distance to one side of the sawing assembly 2. Then, the sawing assembly 2 is started to saw the log at a fixed length. This process is repeated until the log is sawn to a fixed length. When the length-fixing table 5 is rotated 90 degrees to adjust to the longitudinal sawing mode, the power supply to the lower L-shaped electromagnet 20 needs to be disconnected before adjustment. After the length-fixing table 5 is adjusted, the power supply to the upper electromagnet 19 can be turned on, allowing the upper electromagnet 19 to be attracted and fixed together with the sliding table 4. Then, the length-fixing table 5 and the sliding table 4 are connected and fixed together using short bolts 34. When the positioning screw 12 is loosened to adjust the position of the fixing frame 6, the side plate 29 will be moved to one side, and the bottom roller 30 will move simultaneously. At this time, the wire rope 25 will be in a bent state, thus not obstructing the position adjustment of the fixing frame 6. After adjustment, Place the log on the side wall of the fixed frame 6 and align the front end of the log with the rear end of the front plate 36. Rotate the positioning screw 12 in the opposite direction to lock the position of the fixed frame 6. Then, control the drive motor 15 to start and drive the threaded rod 31 to rotate, which in turn drives the threaded drive block 17 and the upper electromagnet 19 to move. This causes the sliding table 4 and the fixed length table 5 to move backward and to one side, so that the log passes through the sawing component 2 to achieve fixed length sawing of the log thickness (during the sawing and pushing process, the guide component 35 on the side of the worktable 1 will squeeze and position the log to ensure stability during the sawing process).

[0028] In summary, the above structural design achieves automatic feed adaptation under different sawing modes. During transverse sawing, the pushing mechanism pushes the log to move laterally along the fixed-length table 5, and works in conjunction with the forward and backward sliding of the cutting saw to complete the fixed-length cut. When the fixed-length table 5 is flipped to the longitudinal position, the pushing mechanism is adjusted synchronously so that it can drive the sliding table 4 and the fixed-length table 5 to move automatically forward and backward along the longitudinal direction. The log is fed synchronously with the table, and the sawing component 2 only needs to be fixed in position to complete the sawing operation in the thickness direction. This design avoids the speed fluctuations and positioning deviations caused by manual pushing of the table, so that both transverse and longitudinal sawing can obtain stable and uniform automatic feed, and improve the consistency of cut quality.

[0029] A method for sawing log frames to a fixed length includes the following steps; Step 1: When sawing horizontally, the log is placed on the fixed-length table 5, and the log is moved by the pusher mechanism. The log is then sawed by the sawing component 2 to achieve horizontal fixed-length sawing of the log frame. Step 2: When longitudinal sawing is required, first release the movement restriction of the fixed length table 5 through the limiting mechanism, then pull the fixed length table 5 laterally. At this time, the T-shaped conversion pin 7 slides in the T-shaped straight groove 8. Then rotate the fixed length table 5 forward, while driving one of the T-shaped conversion pins 7 to slide in the T-shaped arc groove 9, thereby completing the adjustment of the direction of the fixed length table 5. Finally, lock the position mechanism of the fixed length table 5 through the limiting mechanism. Step 3: When sawing longitudinally, first adjust the position of the fixed frame 6, then place the log next to the fixed frame 6, and then control the pushing mechanism to drive the sliding table 4 and the fixed length table 5 to the rear side to achieve fixed length sawing of the log thickness.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0031] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A log frame fixed-length sawing device, comprising a worktable (1), wherein the worktable (1) is provided with a sawing component (2) that can move automatically back and forth, characterized in that, The top of the workbench (1) is fixedly connected to a pair of guide rails (3). The top of the workbench (1) is provided with a sliding table (4). The sliding table (4) is slidably connected between the two guide rails (3). A fixed length table (5) is provided above the sliding table (4). A fixed frame (6) is provided on the fixed length table (5). A pushing mechanism for pushing the log sawing is provided on the fixed frame (6). A conversion mechanism for adjusting the position of the fixed length table (5) is also provided. A limiting mechanism for limiting the position is provided on the fixed frame (6). The conversion mechanism includes a T-shaped conversion pin (7), and a pair of T-shaped conversion pins (7) are provided. The T-shaped conversion pins (7) are fixedly connected to the top of the sliding table (4). A pair of T-shaped straight grooves (8) are opened at the bottom of the fixed length table (5). The T-shaped conversion pins (7) are inserted into the inside of the T-shaped straight grooves (8). A quarter-circle arc T-shaped arc groove (9) is opened on the rear side of the T-shaped straight groove (8) located in front. The center of the arc groove (9) is the same as the center of the side end of the T-shaped straight groove (8) located behind. A front plate (36) is fixedly connected to the front end of the fixed frame (6) on the side away from the sawing assembly (2).

2. The log frame fixed-length sawing device according to claim 1, characterized in that, The fixed length platform (5) has a pair of slide rail grooves (10) at the top. The fixed frame (6) has a pair of slide rail blocks (11) fixedly connected to the bottom. The slide rail blocks (11) are slidably connected to the inside of the slide rail grooves (10). The fixed frame (6) has a positioning pin (12) threaded through the top. The bottom of the positioning pin (12) passes through the bottom of one of the slide rail blocks (11) and the bottom of the positioning pin (12) abuts against the bottom of one of the slide rail grooves (10). The fixed length platform (5) and the workbench (1) are both equipped with guide components (35) for squeezing logs for sawing and positioning.

3. The log frame fixed-length sawing device according to claim 1, characterized in that, The limiting mechanism includes a pair of long bolts (13). The long bolts (13) are both installed through the fixed frame (6). The top of the sliding table (4) and the worktable (1) are provided with upper threaded holes (14) at the position below the long bolts (13). The bottom of the long bolts (13) are threaded through the bottom of the fixed length platform (5) and connected to the upper threaded holes (14).

4. The log frame fixed-length sawing device according to claim 1, characterized in that, The pushing mechanism includes a drive motor (15), a drive frame (16) is fixedly connected through the top of the worktable (1), a drive block (17) is slidably connected to the inner side of the drive frame (16), a lower L-shaped plate (18) is fixedly connected to the side wall of the drive block (17), an upper electromagnet (19) and a lower L-shaped electromagnet (20) are fixedly connected to the top of the lower L-shaped plate (18), a side frame (21) is fixedly connected to the side wall of the fixed length platform (5), the bottom end of the fixed frame (6) is connected through the interior of the side frame (21), and the inner side of the fixed frame (6) is slidably connected to the side frame (21). A pusher plate (22) is movably connected. An upper roller (23) is rotatably connected to the inner side of the fixed frame (6) and away from the sawing assembly (2). A lower roller (24) is rotatably connected to the inner side of the side frame (21) and away from the fixed frame (6). A wire rope (25) is provided inside the fixed frame (6). A through hole (26) is provided through the side wall of the pusher plate (22). An upper block (27) is slidably connected to the inner side of the side frame (21). The drive motor (15) is fixedly connected to the rear side of the drive frame (16). The top of the upper electromagnet (19) is flush with the bottom of the sliding table (4).

5. The log frame fixed-length sawing device according to claim 4, characterized in that, The lower L-shaped electromagnet (20) is positioned below the upper block (27), which is made of iron. A pair of side rollers (28) are rotatably connected to the inner side of the fixed frame (6) and the side closest to the sawing assembly (2). A side plate (29) is fixedly connected to the bottom of the fixed frame (6) relative to the inner position of the side frame (21). A bottom roller (30) is rotatably connected to the side wall of the side plate (29). The other end of the wire rope (25) passes through the through hole (26). One end of the rope (25) is fixedly connected to the side wall of the pusher plate (22), and the other end passes through the outer wall of the upper roller (23), the inside of the through hole (26), and the outer wall of one of the side rollers (28) in sequence. Then it passes through the bottom of the bottom roller (30), then winds back through the outer wall of the lower roller (24), then through the bottom of the bottom roller (30) and the outer wall of the other side roller (28), and finally is fixedly connected to the other end of the pusher plate (22). The upper block (27) is fixedly connected to the wire rope (25).

6. The log frame fixed-length sawing device according to claim 4, characterized in that, The drive frame (16) is rotatably connected to a threaded rod (31), which is threaded through and connected to the inner wall of the drive block (17). The output end of the drive motor (15) passes through the inner side of the drive frame (16) and is fixedly connected to the side wall of the threaded rod (31).

7. The log frame fixed-length sawing device according to claim 4, characterized in that, The top of the lower L-shaped electromagnet (20) is flush with the bottom of the side frame (21), the bottom of the upper block (27) is flush with the bottom of the side frame (21), and the sliding table (4) is made of iron.

8. The log frame fixed-length sawing device according to claim 3, characterized in that, The fixed length platform (5) is fixedly connected to a rear plate (32). A pair of rear holes (33) are opened through the top of the rear plate (32). Short bolts (34) are inserted into each of the rear holes (33). After the conversion is completed, the rear plate (32) is rotated to the top of the upper threaded hole (14). Then the short bolts (34) are rotated to be threaded into the upper threaded hole (14) on the sliding platform (4).

9. A method for sawing log frames to a fixed length, the method being applicable to the log frame sawing device described in any one of claims 1-8, characterized in that, Includes the following steps; Step 1: When sawing horizontally, the log is placed on the fixed-length table (5), and the log is moved by the pusher mechanism. The log is then sawed by the sawing assembly (2) to achieve horizontal fixed-length sawing of the log frame. Step 2: When longitudinal sawing is required, first release the movement restriction of the fixed length table (5) through the limiting mechanism, then pull the fixed length table (5) laterally. At this time, the T-shaped conversion pin (7) slides in the T-shaped straight groove (8). Then rotate the fixed length table (5) forward, and at the same time drive one of the T-shaped conversion pins (7) to slide in the T-shaped arc groove (9), thereby completing the adjustment of the direction of the fixed length table (5). Finally, lock the position mechanism of the fixed length table (5) through the limiting mechanism. Step 3: When sawing longitudinally, first adjust the position of the fixed frame (6), then place the log next to the fixed frame (6), and then control the pushing mechanism to drive the sliding table (4) and the fixed length table (5) to the rear side to achieve fixed length sawing of the log thickness.

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