A positioning guide device for a double-end cut-off saw

Abstract

The utility model discloses a double -end cut -saw machine positioning guide device, including frame, stable guide mechanism, guide clamping mechanism and stabilizing mechanism, the stable guide mechanism includes the transport frame and guide frame, the guide clamping mechanism includes the support pipe and the clamping rod, the stabilizing mechanism includes the rotation cover and the shrink block, and the stable guide mechanism is through the pivot wheel on transport frame and guide tape and rubber roller assembly on guide frame cooperation, forms the double restraint system of up and down, ensures the stable position and direction of workpiece in the transmission process, prevents the deviation and the shaking, and the guide clamping mechanism is through the exquisite cooperation of support pipe, clamping pipe, carousel and clamping rod, realizes the accurate adjustment and the fixed of guide frame height, wherein the top guide groove on carousel and the guide rod on the rotation and the embedded block form the rotary guide system, and simple rotation operation is converted into accurate clamping action, and the guide height is adjusted quickly according to different workpiece size and is locked firmly.

Description

Technical Field

[0001] This utility model relates to the field of guidance technology, and more specifically, it relates to a positioning and guiding device for a double-ended saw. Background Technology

[0002] In current double-end saws, wood often becomes unstable during the feeding process. When the wood is fed into the machine, improper guide rail design or a lack of an effective control system for the feeding mechanism can cause the wood to deviate or slip during feeding, severely affecting cutting accuracy and processing efficiency.

[0003] In existing technologies, the height adjustment of the guide frame usually requires too much manual operation and the adjustment method is relatively complicated. Some traditional designs rely on screws or manual locking devices to adjust the height. The adjustment process requires a lot of physical labor and the accuracy and convenience of adjustment are poor. This not only increases the labor intensity of operation, but also requires the operator to spend more time to ensure the matching of the equipment with the wood.

[0004] Due to the lack of an efficient and precise height adjustment system, operators often need to make repeated adjustments and tests, and may even need to use different tools to assist in the adjustments. This greatly reduces operational efficiency and workflow. Especially when handling timber of different sizes or shapes, traditional adjustment methods cannot quickly adapt to the different needs of the timber, resulting in longer production cycles and limiting the flexibility and adaptability of the equipment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a positioning and guiding device for a double-ended saw to solve the technical problems mentioned in the background art, such as unstable wood feeding, inconvenient height adjustment of the guide frame, and difficulty in applying different sizes of wood.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a positioning and guiding device for a double-ended sawing machine, comprising a frame, a stabilizing guiding mechanism, a guiding locking mechanism, and a stabilizing mechanism. The stabilizing guiding mechanism includes a conveying frame and a guiding frame. Rotating wheels are symmetrically installed on the conveying frame, and a guide belt is installed between the rotating wheels. A guiding frame is installed on the frame, and a rubber roller assembly is installed on the guiding frame, with the rubber roller assembly positioned opposite to the guide belt. The guiding locking mechanism includes a support tube and a locking rod. A locking groove is formed on the side wall of the locking rod. A locking tube is rotatably installed at the top end of the support tube, and a rotating insert is rotatably installed on the side wall of the support tube. A turntable is rotatably installed at the top end of the inner wall of the locking tube, and a top guide groove is formed on the turntable. A guide rod is installed on the rotating insert, and one end of the guide rod is rotatably guided in conjunction with the top guide groove.

[0009] The present invention is further configured such that the stabilizing mechanism includes a rotating sleeve and a shrinking block. A rotating sleeve is installed on the outer wall of the clamping tube, and a synchronizing block is installed at the bottom end of the rotating sleeve. Multiple sets of synchronizing blocks are provided. Multiple sets of shrinking blocks are slidably installed on the outer wall of the support tube. A shrinking spring is installed between adjacent shrinking blocks. The synchronizing block passes through the gaps between different shrinking blocks in sequence, so that the rotating sleeve stably drives the clamping tube and the turntable to rotate.

[0010] The present invention is further configured such that a threaded rod is installed at the top end of the frame, and a transverse frame is slidably installed on the frame. The transverse frame is threadedly connected to the threaded rod. The threaded rod is installed at the top end of the frame and threadedly connected to the transverse frame. By rotating the threaded rod, the position of the transverse frame can be precisely adjusted, thereby changing the distance between the two sides of the saw assembly.

[0011] The present invention is further configured such that a sawing machine assembly is installed on one side of the frame and the transverse frame respectively, forming a double-end sawing arrangement, and a set of the stabilizing guide mechanisms is fixedly installed on the transverse frame.

[0012] The present invention is further configured such that a longitudinal plate is fixedly installed at the top end of the transverse frame, and a connecting plate is installed at the bottom end of the side wall of the support tube. The connecting plate is fixedly installed on the longitudinal plate, and the connecting plate connects the support tube and the transverse frame to ensure that the guide snap-fit ​​mechanism and the transverse frame form a stable whole.

[0013] The present invention is further configured such that the guide frame is provided with an adjustment hole, and a limiting block is installed at one end of the locking rod. One end of the locking rod can extend through different adjustment holes and engage with the support tube to fix the guide frame at the required height.

[0014] The present invention is further configured such that a centripetal rail is installed at the top end of the connecting plate, and the shrink block is configured to slide centripetally on the centripetal rail. The centripetal rail provides guidance for the centripetal sliding of the shrink block, ensuring that the shrink block slides accurately in the centripetal direction.

[0015] The present invention is further configured such that a bottom guide groove is provided in the side wall of the support tube, and the bottom guide groove is arc-shaped. One end of the guide rod is rotated and guided in conjunction with the bottom guide groove. The bottom guide groove and the guide rod are rotated and guided in conjunction with one end of the guide rod to provide a stable rotation path for the guide rod, forming a dual guide system with the top guide groove.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a positioning and guiding device for a double-ended cutter saw, which has the following advantages:

[0018] This utility model is equipped with a stabilizing guide mechanism. The stabilizing guide mechanism cooperates with the rotating shaft wheel and guide belt on the conveyor frame and the rubber roller assembly on the guide frame to form a double constraint system, ensuring that the workpiece maintains a stable position and orientation during the conveying process, preventing deviation and shaking, effectively controlling the movement trajectory of the workpiece, providing a stable workpiece state for precise cutting, reducing cutting errors, and improving processing accuracy.

[0019] This utility model is equipped with a guide snap-fit ​​mechanism. Through the ingenious cooperation of the support tube, snap-fit ​​tube, turntable and snap-fit ​​rod, the guide frame height can be precisely adjusted and fixed. The top guide groove on the turntable and the guide rod on the rotary insert block form a rotation guide system, which transforms the simple rotation operation into a precise snap-fit ​​action. It allows for quick adjustment and secure locking of the guide height according to different workpiece sizes, enhances the adaptability and ease of operation of the device, and ensures the stability after adjustment.

[0020] This invention incorporates a stabilizing mechanism. Through the coordinated operation of the rotating sleeve, synchronizing block, contraction block, and contraction spring, gaps and vibrations during rotation are eliminated. Multiple sets of contraction blocks form an elastic constraint system under the action of the contraction spring, precisely cooperating with the synchronizing block to ensure that the rotating sleeve can stably drive the locking tube and turntable to rotate. This significantly improves the accuracy and reliability of the locking operation, extends the service life of the device, and ensures that a good locking effect is maintained even after repeated adjustments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the guide frame adjustment method in this utility model. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the guide frame adjustment method in this utility model. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the guiding latching mechanism and the stabilizing mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the guide latching mechanism and the stabilizing mechanism in this utility model.

[0026] In the diagram: 1. Frame; 2. Conveying frame; 3. Guide frame; 4. Rotating wheel; 5. Guide belt; 6. Rubber roller assembly; 7. Support tube; 8. Clip rod; 9. Clip groove; 10. Clip tube; 11. Rotary insert block; 12. Turntable; 13. Top guide groove; 14. Guide rod; 15. Rotating sleeve; 16. Shrink block; 17. Synchronizing block; 18. Shrink spring; 19. Threaded rod; 20. Transverse frame; 21. Cutter assembly; 22. Longitudinal plate; 23. Connecting plate; 24. Adjustment hole; 25. Limiting block; 26. Centripetal rail; 27. Bottom guide groove. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A positioning and guiding device for a double-ended saw includes a frame 1, a stabilizing guiding mechanism, a guiding locking mechanism, and a stabilizing mechanism. The stabilizing guiding mechanism includes a conveyor frame 2 and a guide frame 3. Rotary wheels 4 are symmetrically installed on the conveyor frame 2, and a guide belt 5 is installed between the rotary wheels 4. The guide frame 3 is installed on the frame 1, and a rubber roller assembly 6 is installed on the guide frame 3, with the rubber roller assembly 6 positioned opposite to the guide belt 5. The guiding locking mechanism includes a support tube 7 and a locking rod 8. A locking groove 9 is provided on the side wall of the locking rod 8. A locking tube 10 is rotatably installed at the top end of the support tube 7. A rotating insert block 11 is rotatably installed on the side wall of the support tube 7. A turntable 12 is rotatably installed at the top end of the inner wall of the locking tube 10. A top guide groove 13 is provided on the turntable 12. A guide rod 14 is installed on the rotating insert block 11, and one end of the guide rod 14 is rotatably guided in conjunction with the top guide groove 13.

[0031] In this embodiment, stable workpiece transport is achieved through the cooperation of the conveyor frame 2 and the guide frame 3. First, a guide belt 5 is installed between the symmetrically mounted rotating wheels 4 on the conveyor frame 2 to form a workpiece conveyor belt. A rubber roller assembly 6 is installed on the guide frame 3, which is positioned opposite to the guide belt 5. When the workpiece is placed on the guide belt 5, the rotation of the rotating wheels 4 causes the guide belt 5 to move the workpiece forward. At the same time, the rubber roller assembly 6 provides upper constraint and guidance for the workpiece, ensuring that the workpiece maintains a stable position and orientation during transport, preventing deviation and shaking, and providing a stable workpiece state for precise cutting. The precise adjustment of the height of the guide frame 3 is achieved through the coordinated work of the support tube 7 and the clamping rod 8. The guide frame 3 is fixed in place. The side wall of the locking rod 8 is provided with a locking groove 9. The top of the support tube 7 is rotatably mounted with a locking tube 10. When it is necessary to adjust the height of the guide frame 3, the locking rod 8 is passed through the adjustment hole 24 on the guide frame 3 and inserted into the locking tube 10. The guide rod 14 on the upper limit rotating block 11 on the side wall of the support tube 7 cooperates with the top guide groove 13 on the turntable 12 rotatably mounted on the top of the inner wall of the locking tube 10 to form a rotational guide system. When the locking tube 10 is rotated, the turntable 12 rotates accordingly, and the top guide groove 13 drives the guide rod 14 to move, so that the rotating block 11 rotates to insert into or disengage from the locking groove 9 of the locking rod 8, thereby achieving locking or release, and thus completing the precise positioning and fixing of the height of the guide frame 3.

[0032] The stabilizing mechanism includes a rotating sleeve 15 and a shrinking block 16. The rotating sleeve 15 is installed on the outer wall of the clamping tube 10. A synchronizing block 17 is installed at the bottom end of the rotating sleeve 15, and multiple sets of synchronizing blocks 17 are provided. Multiple sets of shrinking blocks 16 are slidably installed on the outer wall of the support tube 7. A shrinking spring 18 is installed between adjacent shrinking blocks 16. The synchronizing block 17 passes through different shrinking blocks 16 in sequence, so that the rotating sleeve 15 stably drives the clamping tube 10 and the turntable 12 to rotate.

[0033] In this embodiment, to ensure the stability and reliability of the guide snap-fit ​​mechanism, the bottom of the rotating sleeve 15 installed on the outer wall of the snap-fit ​​tube 10 is provided with multiple sets of synchronizing blocks 17, which cooperate with multiple sets of shrinking blocks 16 that are slidably installed on the outer wall of the support tube 7. The shrinking springs 18 installed between adjacent shrinking blocks 16 provide pre-tightening force. The synchronizing blocks 17 pass through the gaps between different shrinking blocks 16 in sequence to form a stable constraint system. When the rotating sleeve 15 rotates, the synchronizing blocks 17 move smoothly under the elastic constraint of the shrinking blocks 16 and the shrinking springs 18, eliminating gaps and vibrations during the rotation process, ensuring that the rotating sleeve 15 can stably drive the snap-fit ​​tube 10 and the turntable 12 to rotate, thereby improving the accuracy and reliability of the snap-fit ​​operation.

[0034] Please see Figures 1-5 As a supplementary embodiment of a double-end saw positioning and guiding device for a stabilizing guide mechanism, a guide locking mechanism, and a stabilizing mechanism: A threaded rod 19 is installed at the top end of the frame 1, and a transverse frame 20 is slidably installed on the frame 1. The transverse frame 20 is threadedly connected to the threaded rod 19. A saw assembly 21 is installed on one side of the frame 1 and the transverse frame 20, respectively, forming a double-end saw configuration. A set of stabilizing guide mechanisms is fixedly installed on the transverse frame 20. A longitudinal plate 22 is fixedly installed at the top end of the transverse frame 20, and a longitudinal plate 22 is installed at the bottom end of the side wall of the support pipe 7. A connecting plate 23 is fixedly installed on the longitudinal plate 22. The guide frame 3 has an adjustment hole 24, and a limiting block 25 is installed at one end of the locking rod 8. One end of the locking rod 8 can extend through different adjustment holes 24 and engage with the support tube 7 to fix the guide frame 3 at the required height. A centripetal rail 26 is installed at the top end of the connecting plate 23, and the shrink block 16 is set to slide centripetally on the centripetal rail 26. A bottom guide groove 27 is opened in the side wall of the support tube 7, and the bottom guide groove 27 is set with an arc. One end of the guide rod 14 is engaged with the bottom guide groove 27 for rotational guidance.

[0035] More specifically, the position of the transverse frame 20 is adjusted by the threaded rod 19 at the top of the frame 1 so that the distance between the sawing machine assemblies 21 on both sides matches the length of the workpiece to be processed. According to the workpiece size, an appropriate adjustment hole 24 is selected on the guide frame 3. The snap-fit ​​rod 8 is inserted through the adjustment hole 24 into the snap-fit ​​tube 10 on the support tube 7. The rotating sleeve 15 on the outer wall of the snap-fit ​​tube 10 is rotated, which drives the snap-fit ​​tube 10 and the turntable 12 to rotate. The top guide groove 13 on the turntable 12 drives the rotating insert block 11 to rotate through the guide rod 14, and engages with the snap-fit ​​groove 9 of the snap-fit ​​rod 8, thus fixing the guide frame 3. Once the workpiece is positioned at the required height, it is placed on the guide belt 5 of the conveyor frame 2. The guide belt 5 moves the workpiece forward by rotating the axle wheel 4. At the same time, the rubber roller assembly 6 on the guide frame 3 constrains and guides the upper part of the workpiece to ensure stable conveying. Under stable guidance, the workpiece is conveyed to the correct position. The saw assembly 21 on one side of the frame 1 and the transverse frame 20 simultaneously performs precise cutting on both ends of the workpiece. If workpieces of different lengths need to be cut, the position of the transverse frame 20 is adjusted by driving the rotating threaded rod 19 through external equipment, thereby changing the distance between the two saw assemblies 21.

[0036] In summary, during the use or operation of the overall equipment: when a stable guiding mechanism is required, the stable transfer of workpieces is achieved through the cooperation of the conveyor frame 2 and the guide frame 3. First, a guide belt 5 is installed between the symmetrically mounted rotating shaft wheels 4 on the conveyor frame 2 to form a workpiece conveyor belt. The guide frame 3, which is installed on the frame 1, is equipped with a rubber roller assembly 6, which is positioned opposite to the guide belt 5. When the workpiece is placed on the guide belt 5, the rotation of the rotating shaft wheels 4 causes the guide belt 5 to move the workpiece forward. At the same time, the rubber roller assembly 6 provides upper constraint and guidance for the workpiece, ensuring that the workpiece maintains a stable position and orientation during the transfer process, preventing deviation and shaking, and providing a stable workpiece state for precise cutting.

[0037] When the guide clamping mechanism is in operation, the height of the guide frame 3 is precisely adjusted and fixed through the coordinated work of the support tube 7 and the clamping rod 8. The clamping rod 8 has a slot 9 on its side wall, and the top of the support tube 7 is rotatably mounted with a clamping tube 10. When the height of the guide frame 3 needs to be adjusted, the clamping rod 8 is passed through the adjustment hole 24 on the guide frame 3 and inserted into the clamping tube 10. The guide rod 14 on the rotatable insert block 11 mounted on the side wall of the support tube 7 cooperates with the top guide groove 13 on the turntable 12 rotatably mounted on the top of the inner wall of the clamping tube 10 to form a rotary guide system. When the clamping tube 10 is rotated, the turntable 12 rotates accordingly, and the top guide groove 13 drives the guide rod 14 to move, so that the rotatable insert block 11 rotates to insert into or disengage from the slot 9 of the clamping rod 8, thereby achieving clamping or release, and thus completing the precise positioning and fixing of the height of the guide frame 3.

[0038] When the mechanism needs to be stabilized during operation, to ensure the stability and reliability of the guide snap-fit ​​mechanism, the bottom of the rotating sleeve 15 installed on the outer wall of the snap-fit ​​tube 10 is provided with multiple sets of synchronizing blocks 17, which cooperate with multiple sets of shrinking blocks 16 that are slidably installed on the outer wall of the support tube 7. The shrinking springs 18 installed between adjacent shrinking blocks 16 provide pre-tightening force. The synchronizing blocks 17 pass through the gaps between different shrinking blocks 16 in sequence to form a stable constraint system. When the rotating sleeve 15 rotates, the synchronizing blocks 17 move smoothly under the elastic constraint of the shrinking blocks 16 and the shrinking springs 18, eliminating gaps and vibrations during rotation, ensuring that the rotating sleeve 15 can stably drive the snap-fit ​​tube 10 and the turntable 12 to rotate, and improving the accuracy and reliability of the snap-fit ​​operation.

[0039] Adjust the position of the transverse frame 20 by using the threaded rod 19 at the top of frame 1, so that the distance between the sawing machine assemblies 21 on both sides matches the length of the workpiece to be processed. Based on the workpiece size, select an appropriate adjustment hole 24 on the guide frame 3, insert the locking rod 8 through the adjustment hole 24 into the locking tube 10 on the support tube 7, rotate the rotating sleeve 15 on the outer wall of the locking tube 10, causing the locking tube 10 and the turntable 12 to rotate. The top guide groove 13 on the turntable 12 drives the rotating insert block 11 to rotate via the guide rod 14, engaging with the locking groove 9 of the locking rod 8, thus fixing the guide frame 3 in place. The required height is achieved when the workpiece is placed on the guide belt 5 of the conveyor frame 2. The guide belt 5 drives the workpiece forward through the rotation of the rotating shaft wheel 4. At the same time, the rubber roller assembly 6 on the guide frame 3 constrains and guides the upper part of the workpiece to ensure stable conveying. Under stable guidance, the workpiece is conveyed to the correct position. The saw assembly 21 on one side of the frame 1 and the transverse frame 20 simultaneously performs precise cutting on both ends of the workpiece. If it is necessary to cut workpieces of different lengths, the position of the transverse frame 20 is adjusted by driving the rotating threaded rod 19 through external equipment, thereby changing the distance between the two sides of the saw assembly 21.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0041] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise explicitly described, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here. In all the solutions mentioned above, those involving motors can be used with a reducer if necessary. The connection structure and working principle between the motor and the reducer are existing, well-known technologies, and will not be elaborated here.

Claims

1. A positioning and guiding device for a double-ended saw, comprising a frame (1), a stabilizing guiding mechanism, a guiding locking mechanism, and a stabilizing mechanism, characterized in that: The stabilizing guide mechanism includes a conveyor frame (2) and a guide frame (3). The conveyor frame (2) is symmetrically equipped with rotating wheels (4), and a guide belt (5) is installed between the rotating wheels (4). The guide frame (3) is fitted onto the frame (1), and a rubber roller assembly (6) is installed on the guide frame (3), with the rubber roller assembly (6) positioned opposite to the guide belt (5). The guide clamping mechanism includes a support tube (7) and a clamping rod (8). The clamping rod (8)... A slot (9) is provided on the side wall. A retaining tube (10) is installed at the top end of the support tube (7) for limiting rotation. A rotating block (11) is installed at the upper limit of the side wall of the support tube (7). A turntable (12) is installed at the top end of the inner wall of the retaining tube (10). A top guide groove (13) is provided on the turntable (12). A guide rod (14) is installed on the rotating block (11), and one end of the guide rod (14) is rotated and guided in conjunction with the top guide groove (13).

2. The positioning and guiding device for a double-ended sawing machine according to claim 1, characterized in that: The stabilizing mechanism includes a rotating sleeve (15) and a shrinking block (16). The rotating sleeve (15) is installed on the outer wall of the clamping tube (10). A synchronizing block (17) is installed at the bottom end of the rotating sleeve (15), and multiple sets of synchronizing blocks (17) are provided. Multiple sets of shrinking blocks (16) are slidably installed on the outer wall of the support tube (7). A shrinking spring (18) is installed between adjacent shrinking blocks (16). The synchronizing block (17) passes through different shrinking blocks (16) in sequence, so that the rotating sleeve (15) stably drives the clamping tube (10) and the turntable (12) to rotate.

3. The positioning and guiding device for a double-ended sawing machine according to claim 1, characterized in that: A threaded rod (19) is installed at the top end of the frame (1), and a transverse frame (20) is slidably installed on the frame (1), with the transverse frame (20) threadedly connected to the threaded rod (19).

4. The positioning and guiding device for a double-ended sawing machine according to claim 3, characterized in that: The frame (1) and the transverse frame (20) are respectively equipped with a saw assembly (21) to form a double-end saw, and a set of the stabilizing guide mechanism is fixedly installed on the transverse frame (20).

5. A positioning and guiding device for a double-ended sawing machine according to claim 3, characterized in that: A longitudinal plate (22) is fixedly installed on the top end of the transverse frame (20), and a connecting plate (23) is installed on the bottom end of the side wall of the support tube (7). The connecting plate (23) is fixedly installed on the longitudinal plate (22).

6. The positioning and guiding device for a double-ended sawing machine according to claim 1, characterized in that: The guide frame (3) is provided with an adjustment hole (24), and a limiting block (25) is installed at one end of the locking rod (8). One end of the locking rod (8) can extend through different adjustment holes (24) and engage with the support tube (7) to fix the guide frame (3) at the required height.

7. A positioning and guiding device for a double-ended sawing machine according to claim 5, characterized in that: The top end of the connecting plate (23) is provided with a centripetal rail (26), and the shrink block (16) is arranged to slide centripetally on the centripetal rail (26).

8. The positioning and guiding device for a double-ended sawing machine according to claim 1, characterized in that: The support tube (7) has a bottom guide groove (27) inside its side wall, and the bottom guide groove (27) is curved. One end of the guide rod (14) is rotated and guided in conjunction with the bottom guide groove (27).

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