Horizontal metal band sawing machine capable of realizing automatic machining process

Abstract

This invention relates to the field of band saw technology, specifically a horizontal metal band saw capable of automated processing, belonging to the category of metal cutting and forming machine tools. It includes a fixed clamping body, a movable clamping body, and a manual screw that drives the movable clamping body to move relative to the fixed clamping body to clamp and release the workpiece. The bottom of both the fixed and movable clamping bodies is equipped with floats that generate downward displacement according to changes in sawing force. The floats are held in their initial positions by elastic supports and bear the bottom of the workpiece. A panel is also movably mounted on the clamping body. The panel is connected to a floating wedge with an inclined surface via a back plate. The downward displacement generated by the floats is transmitted to the inclined surface of the floating wedge through rollers and converted into a horizontal driving force, driving the panel to feed towards the workpiece to dynamically compensate for the clamping force. A locking structure is provided on the back plate, normally holding the panel against the back plate. A carrying platform is provided at the output end of the bed. This band saw improves workpiece clamping stability and cut quality.

Description

Technical Field

[0001] This invention relates to the field of metal cutting and forming machine tool technology, specifically to the field of band saw technology, and more specifically to a horizontal metal band saw that can realize an automatic processing process. Background Technology

[0002] Horizontal band saws are core equipment in metal cutting and forming machine tools used for cutting metal bars, tubes, and profiles. During operation, the saw frame moves the saw band downwards to cut the workpiece. In semi-automatic horizontal band saws, the workpiece clamping device is a crucial component for ensuring sawing accuracy and processing safety; its performance directly affects the processing quality and production efficiency of the metal cutting and forming machine tool. In existing technologies, clamping devices generally use a manual screw-driven movable jaw to clamp and release the workpiece. The operator rotates the screw handwheel to move the movable jaw towards the fixed jaw, clamping the workpiece between the two jaws. This manual clamping method is simple in structure and low in manufacturing cost, and has been widely used in this field for a long time.

[0003] However, manual screw clamping is a static clamping method and cannot be dynamically adjusted according to actual working conditions during sawing. During sawing, the downward sawing force applied by the saw blade to the workpiece causes the workpiece to tend to shift downwards. This tendency changes the contact state between the workpiece and the jaws, especially when sawing round tubes and bars. The downward sawing force can easily cause the workpiece to shift or rotate slightly within the V-shaped clamping surface, resulting in decreased clamping stability. Operators cannot compensate for the clamping force in real time during sawing and can only predict the clamping force based on experience before sawing, making it difficult to cope with changes in the sawing load during actual sawing. If excessive clamping force is used to maintain stability, when the workpiece is completely sawn off, the cut part separates from the main body, but the clamping device still maintains a large clamping force on the workpiece. For tubes, the residual clamping force will cause extrusion deformation at the cut, resulting in out-of-roundness or local dents, affecting the dimensional accuracy and appearance quality of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to provide a horizontal metal band saw that can realize an automated processing process, so as to improve the stability of workpiece sawing and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a horizontal metal band saw that can realize an automatic processing process, comprising a bed, a fixed clamping body, a movable clamping body, and a manual lead screw that drives the movable clamping body to move relative to the fixed clamping body to realize workpiece clamping and loosening. The bottom of the fixed clamping body and the movable clamping body are respectively provided with floats that can generate downward displacement with the sawing force. The floats are held in the initial position by elastic support members and support the bottom of the workpiece. The clamp body is also equipped with a panel, which is connected to a floating wedge with an inclined surface through a back plate. The downward displacement generated by the float rod is transmitted to the inclined surface of the floating wedge through the roller and converted into a horizontal driving force, which drives the panel to feed towards the workpiece to dynamically compensate for the clamping force. The back plate is equipped with a locking structure, which keeps the panel on the back plate under normal conditions. The output end of the bed is equipped with a bearing platform, which is connected to the locking structure through an unloading support rod. When the sawn workpiece falls onto the bearing platform, the bearing platform moves down and triggers the locking structure to unlock through the unloading support rod, so that the panel retracts to release the clamping force.

[0006] Preferably, the float is installed at the bottom of the clamp body by lifting and lowering via a lifting device. A guide seat is fixedly provided on the sliding plate of the clamp body. The lifting device consists of a top seat and a lifting rod that passes through the guide seat and the sliding plate. An elastic support is provided between the top seat and the guide seat. The elastic support is a pre-compressed disc spring, which is sleeved on the hanger and abuts against the bottom surface of the top seat and the upper surface of the guide seat respectively.

[0007] Preferably, a roller frame is fixedly installed on the top seat of the lifting component, and a roller is rotatably mounted on the roller frame via a pin, with the roller facing the clamping vertical plate of the clamp body.

[0008] Preferably, the panel has a feed space of 1-3mm, and a connecting rod is fixed on the side of the panel facing the clamp body. The connecting rod passes through the clamping vertical plate and is connected to a bayonet end, which is connected to the back plate.

[0009] Preferably, a back frame is fixed on the back plate, a floating wedge is fixed to the bottom of the back frame, the inclined surface of the floating wedge is set towards the roller and contacts the roller, and the bottom surface of the floating wedge is attached to the upper surface of the sliding plate of the clamp body and can slide horizontally along the surface.

[0010] Preferably, the locking structure includes a central rod that is lifted and mounted on the back plate, a limiting member fixed to the end of the central rod and capable of engaging with the end of the bayonet, a lifting block fixed to one end of the central rod, and a spring guide rod disposed on the clamp body; The lifting block is slidably mounted on the spring guide rod, which provides an upward elastic force to keep the lifting block in its initial position.

[0011] Preferably, the unloading support rod is vertically installed and its top end is connected to the lifting block, and the bottom end of the unloading support rod on the fixed clamp side is fixed to one side of the bearing platform; A slider is fixed at the bottom of the unloading support rod on the side of the movable clamp body. A limiting groove is provided on the other side of the bearing platform. The slider is inserted into the limiting groove and can move up and down with the bearing platform. At the same time, the slider and the bearing platform are allowed to move relative to each other in the horizontal direction.

[0012] Preferably, the carrying platform is lifted and installed on the discharge end of the bed via a support base. A third spring is provided on the support base, with its two ends connected between the support base and the carrying platform to keep the carrying platform at its initial height.

[0013] Preferably, a fourth spring is also connected to the bottom of the support base, with the top end of the fourth spring connected to the bottom surface of the bearing platform and the bottom end connected to the support member.

[0014] Preferably, an adjusting screw is installed on the support base, with the top end of the adjusting screw abutting against the support member. By rotating the adjusting screw, the height of the support member can be adjusted to change the elastic force of the fourth spring on the bearing platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes fixed and movable floats, which are mutually interlocking and form an integrated telescopic structure, respectively installed at the bottom of the fixed and movable clamping bodies. This allows the workpiece to rest on the double float structure. The floats sense the sawing force and generate downward displacement when the sawing force is excessive, thus accurately reflecting the clamping force state and providing a reliable trigger signal for automatic clamping force compensation. A roller frame is fixed to the top of the lifting component, and rollers are rotatably mounted on the roller frame, making contact between the rollers and the inclined surfaces of the floating wedges. When the floats are pressed down by the workpiece, the lifting component drives the roller frame to move downwards. The rollers exert pressure on the inclined surface of the floating wedge and convert it into a horizontal component force, providing a reliable driving force for the automatic feeding of the panel. By movably setting a panel with a floating gap of 1-3mm on the clamping vertical plate of the fixed clamp and the movable clamp, and connecting the panel to the back plate on the side of the panel facing the clamp through a connecting rod and a bayonet end, the panel can be fed towards the workpiece as the back plate moves. When the workpiece shows a slight downward pressure tendency, the clamping force is increased in time, effectively eliminating the error in manual screw clamping operation and ensuring the quality of the saw cut.

[0016] 2. By fixing the back frame to the back plate and installing a floating wedge at the bottom of the back frame, the inclined surface of the floating wedge contacts the roller and its bottom surface moves in contact with the sliding plate surface of the clamp body. The force amplification effect of the wedge-shaped inclined surface is used to amplify the vertical pressure of the roller into a horizontal clamping force, realizing automatic compensation of clamping force without any electrical components or external power source. The structure is simple, reliable and easy to retrofit at low cost on existing band saws.

[0017] 3. By setting a locking structure on the back plate consisting of a central rod, a limiting component, a lifting block, and a spring guide rod, the limiting component normally engages with the bayonet at the bayonet end, fixing the panel to the back plate and ensuring that the panel can feed synchronously with the back plate. When unloading is required after sawing, the limiting component can disengage from the bayonet to allow the panel to retract, realizing controllable switching between clamping and unloading working states. By setting a third spring between the bearing platform and the support base for balance support, and connecting unloading support rods on the fixed clamping side and the movable clamping side on both sides of the bearing platform, the bearing platform can sense the workpiece being cut and use the gravity of the falling material to synchronously drive the unloading support rods on both sides to move down. Then, the lifting block and the limiting component realize the automatic unlocking of the locking structure, allowing the panel to automatically retract and unload at the moment of sawing completion, effectively preventing deformation of the cut end of tubular workpieces due to excessive clamping force.

[0018] 4. By welding a U-shaped slider to the bottom of the unloading support rod on the side of the movable clamp, and setting a U-shaped limiting groove with an open top on the corresponding side of the bearing platform, the slider can both insert into the limiting groove and move up and down with the bearing platform, and also allow relative movement between the slider and the bearing platform in the horizontal direction. This ensures a reliable transmission connection between the movable clamp and the bearing platform when the position is adjusted according to the workpiece size, guaranteeing the applicability of the unloading function under different workpiece specifications. By setting a fourth spring on both sides of the bottom surface of the support base and fixing a horizontal support piece at the bottom of the fourth spring, and cooperating with the adjusting screw installed on the support base by the nut, the height of the support piece can be adjusted by rotating the adjusting screw to change the elastic force of the fourth spring. This allows the sensitivity of the bearing platform to be flexibly adjusted according to the length and weight of the workpiece to be sawed, meeting the diverse needs of different processing procedures and effectively improving the processing adaptability and automation level of metal cutting and forming machine tools. Attached Figure Description

[0019] Figure 1 This is a first schematic diagram of the overall structure of the band saw of the present invention.

[0020] Figure 2 This is a second schematic diagram of the overall structure of the band saw of the present invention.

[0021] Figure 3 This is a first schematic diagram of the workpiece clamping structure of the present invention.

[0022] Figure 4 This is a second schematic diagram of the workpiece clamping structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the connection of the dual-clamp structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the movable clamp structure of the present invention.

[0025] Figure 7This is a schematic diagram of the double float structure of the present invention.

[0026] Figure 8 This is a first schematic diagram of the panel and its feeding structure of the present invention.

[0027] Figure 9 This is a second schematic diagram of the panel and its feeding structure of the present invention.

[0028] Figure 10 This is a schematic diagram of the stop and its control structure of the present invention.

[0029] Figure 11 This is a schematic diagram of the bottom structure of the support platform of the present invention.

[0030] In the diagram: 1. Bed frame; 2. Fixed base; 3. Lifting saw frame; 4. Saw blade; 5. Linear guide rail; 6. Fixed clamp body; 7. Movable clamp body; 701. Sliding plate; 702. Clamping vertical plate; 703. Reinforcing rib; 8. Manual lead screw; 9. Nut base support; 10. Fixed float rod; 11. Movable float rod; 12. Guide seat; 13. Lifting component; 14. First spring; 15. Roller frame; 16. Panel; 17. Connecting rod; 18. Backplate; 19. Bayonet end; 20. Corner piece; 21. Rubber washer; 22. Back frame; 23. Floating wedge; 24. Second spring; 25. Center rod; 26. Limiting component; 27. Lifting block; 28. Spring guide rod; 29. ​​Unloading support rod; 30. Sliding block; 31. Bearing platform; 32. Limiting groove; 33. Support seat; 34. Third spring; 35. Fourth spring; 36. Support piece; 37. Adjusting screw. Detailed Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 11This invention provides a technical solution: a horizontal metal band saw capable of automated processing, belonging to the field of metal cutting and forming machine tools. This horizontal metal band saw can stably clamp and fix workpieces such as round tubes and square tubes, ensuring the quality of the saw cut. Furthermore, it can automatically unload after sawing to prevent deformation of the workpiece at the saw cut due to excessive clamping force. Therefore, the horizontal metal band saw of this invention can automatically compensate for clamping force during sawing and automatically unload after sawing, effectively improving the processing accuracy and automation level of metal cutting and forming machine tools.

[0033] like Figure 1 , Figure 2 As shown, the horizontal metal band saw has a fixed base 2 on its bed 1. Multiple conveying rollers are rotatably mounted on the fixed base 2 via bearings to feed the workpiece. At the same time, a workpiece clamping structure is also provided on the fixed base 2 to fix the workpiece in the corresponding position for sawing. A lifting saw frame 3 is also installed on the bed 1 via guide columns and cylinders. A conventional saw blade 4 is provided on the lifting saw frame 3. The saw blade 4 can move with the lifting saw frame 3. The saw blade 4 is above the workpiece clamping structure. When the saw blade 4 moves down, it can generate a sawing force to act on the workpiece, cut the workpiece, and complete the sawing work.

[0034] like Figures 1-5 As shown, the workpiece clamping structure includes a linear guide rail 5 bolted to a fixed base 2. A fixed clamping body 6 is bolted to one end of the linear guide rail 5, while a movable clamping body 7, driven by a manual screw 8, is movably mounted to the other end. A nut base 9 is welded to the bottom of the movable clamping body 7, allowing it to move horizontally along the linear guide rail 5 and connecting to the manual screw 8 mounted at the end of the linear guide rail 5. The fixed clamping body 6 and the movable clamping body 7 are structurally identical and symmetrically arranged. The movable clamping body 7 is moved by the manual screw 8, adjusting the distance between the movable clamping body 7 and the fixed clamping body 6 to clamp or release the workpiece. The fixed clamping body 6 and the movable clamping body 7 are L-shaped components, consisting of a sliding plate 701 and a clamping vertical plate, with reinforcing ribs between the two plates. The sliding plate 701 can move in contact with the upper surface of the linear guide rail 5.

[0035] like Figures 5-7As shown, a fixed float 10 is raised and lowered at the bottom of the fixed clamp body 6, and a movable float 11 is raised and lowered at the bottom of the movable clamp body 7. The fixed float 10 and the movable float 11 are interlocked, and the movable float 11 can slide along the direction of the fixed float 10. The two form an integrated telescopic structure. The upper surfaces of the fixed float 10 and the movable float 11 are on the same horizontal plane and at the same height as the support surface of the conveyor roller. Therefore, when the workpiece is clamped and fixed, its tail rests on the conveyor roller, while its front rests on the double float structure. The two floats can sense the sawing force. If the sawing force is too large, the two floats will be pressed down, and the workpiece will be in a raised tail state, indicating that the clamping force is insufficient and the workpiece needs to be clamped further.

[0036] like Figures 5-8 As shown, guide seats 12 are welded onto the sliding plates 701 of both the fixed clamp body 6 and the movable clamp body 7. Considering that the fixed float 10 and the movable float 11 are misaligned, the guide seats 12 on the fixed clamp body 6 and the movable clamp body 7 are also misaligned, located above the fixed float 10 and the movable float 11 respectively. A through hole is provided in the middle of the guide seat 12, and a lifting member 13 is slidably installed on the guide seat 12 through the through hole. The lifting member 13 consists of a top seat and a lifting rod. The lifting rod is set through the guide seat 12 and the sliding plate 701 of the clamp body. An elastic support is provided between the top seat and the guide seat 12. In this embodiment, the elastic support is a first spring 14. The first spring 14 is a pre-compressed disc spring, and the lifting rod passes through the middle of the disc spring. The disc spring can generate a vertically upward elastic force in the axial direction of the lifting rod, which then acts on the two floats, keeping the two floats at their initial height and able to contact the bottom of the workpiece, thereby completing the installation of the fixed float 10 and the movable float 11.

[0037] Bosses are machined on the upper surface of the guide seat 12 and the lower surface of the top seat for axial positioning of the first spring 14. The inner hole of the disc spring is sleeved on the lifting rod, with its outer edge facing upward against the bottom surface of the top seat and its inner edge facing downward against the upper surface of the guide seat 12.

[0038] like Figure 7 , Figure 8 As shown, a roller frame 15 is welded and fixed on the top seat of the lifting component 13. Rollers are rotatably mounted on the roller frame 15 via pins. The rollers are set towards the clamping vertical plates of the two clamps. When the two floats are pressed down by the workpiece, the roller frame 15 can be moved down accordingly by the lifting component 13.

[0039] like Figures 5-9As shown, the clamping vertical plates of the fixed clamping body 6 and the movable clamping body 7 of the present invention are further provided with a panel 16 as a workpiece contact surface. The panel 16 is provided with a V-groove to increase the friction of the panel 16. The two panels 16 act on the workpiece from both sides to clamp it. The panel 16 is movably set on the fixed clamping body 6 and the movable clamping body 7. The panel 16 is movably set on the fixed clamping body 6 and the movable clamping body 7 through the floating wedge block 23, and has a feed space of 1-3mm, which can further feed when the workpiece is curled up, thereby increasing the clamping force.

[0040] Four connecting rods 17 are evenly arranged on the side of the panel 16 facing the clamp body. One end of the connecting rod 17 is welded and fixed to the panel 16, and the other end of the connecting rod 17 passes through the clamping vertical plates of the two clamp bodies. A bayonet end 19 is welded and fixed to its end. The bayonet end 19 is connected to the back plate 18, thereby connecting the panel 16 and the back plate 18. The panel 16 can be fed and released by moving the back plate 18. The back plate 18 and the panel 16 are respectively located on both sides of the clamping vertical plates of the clamp body.

[0041] Furthermore, such as Figures 4-9 As shown, a back frame 22 is fixed to the back plate 18 with screws. A floating wedge 23 is welded to the bottom of the back frame 22. The inclined surface of the floating wedge 23 faces the roller frame 15. The rollers on the roller frame 15 are in contact with the inclined surface. The bottom surface of the floating wedge 23 is attached to the upper surface of the sliding plate 701 of the clamp body. The floating wedge 23 can move on its upper surface, thereby driving the back plate 18 and even the panel 16 to move. When the two floats are pressed down by the workpiece, the roller frame 15 moves downward accordingly, generating pressure on the floating wedge. The horizontal component force generated on the inclined surface of block 23 can drive the floating wedge block 23 to move horizontally, thereby allowing the panel 16 to feed towards the workpiece, providing greater clamping force. When the workpiece shows slight tail lifting, it can be fixed in time, eliminating errors in the manually operated workpiece clamping structure, ensuring sawing quality. Furthermore, the workpiece clamping structure of this invention is easy to modify on existing band saws without involving electrical modifications, and is especially suitable for low-cost intelligent upgrades of semi-automatic equipment in metal cutting and forming machine tools, reducing enterprise costs.

[0042] like Figure 8 , Figure 9As shown, a second spring 24 is provided between the floating wedge 23 and the back of the clamping vertical plate of the clamp body. The second spring 24 is a pre-compressed helical spring, and its two ends are fixed by pins. It can generate a spring force in the same direction as the movement of the movable clamp body 7, pulling the panel 16 toward the clamping vertical plate of the clamp body. The feeding of the panel 16 generates a larger clamping force on the workpiece. After the workpiece is sawn, the movable clamp body 7 is retracted by the manual screw 8, and the workpiece to be processed falls horizontally on the conveyor roller, no longer exerting pressure on the two floats. At this time, the second spring 24 can reset the floating wedge 23, so that the panel 16 is once again attached to the clamp body. After the floating wedge 23 is reset, the roller re-contacts the inclined surface of the floating wedge 23, and the device returns to its initial state.

[0043] As one embodiment of the present invention, such as Figures 8-10 As shown, the bayonet end 19 is non-fixedly mounted on the back plate 18. The connecting rod 17 passes through the back plate 18. The side of the bayonet end 19 connected to the connecting rod 17 is blocked by the back plate 18. Simultaneously, an L-shaped corner piece 20 is welded and fixed to the back plate 18. A rubber washer 21 is adhered to the corner piece 20 and also adhered to the bayonet port. The rubber washer 21 connects the bayonet end 19 and the corner piece 20, and uses the corner piece 20 to limit the other side of the bayonet end 19, allowing it to float within a limited range. This allows the panel 16 to retract and unload when necessary, i.e., after sawing is complete, preventing excessive clamping force from acting on the cut position and causing deformation of the tubular workpiece cut. This unloading process usually occurs after the panel 16 moves and feeds along with the back plate 18. In this case, there is a gap between the panel 16 and the clamp body, providing space for retraction and unloading.

[0044] A locking structure is also provided on the back plate 18 for the bayonet end 19. Under normal circumstances, the bayonet end 19 is tightly pressed against the back plate 18, thereby fixing the bayonet end 19 and the connecting rod 17 to the back plate 18, so that the panel 16 can be fed towards the workpiece as the back plate 18 moves.

[0045] like Figures 8-10 As shown, the locking structure includes a central rod 25. A through slot is provided in the middle of the back plate 18. The central rod 25 is installed in the slot and is raised and lowered. Limiting members 26 are welded and fixed at both ends of the central rod 25. The four bayonet ends 19 are installed in the same direction, and the bayonets on them are all located at the bottom. The limiting member 26 has a fork-shaped structure and can be engaged in the bayonet end 19, limiting the bayonet end 19 to a position that is tightly attached to the back plate 18, thereby fixing the panel 16 to the back plate 18. After the limiting member 26 is disengaged from the bayonet end 19, the workpiece generates a reaction force on the panel 16, which can cause the panel 16 and the back plate 18 to retract, avoiding excessive pressure on the workpiece.

[0046] One end of the center rod 25 is fixed with a lifting block 27 by screws. Vertical guide grooves are provided on the reinforcing ribs of the fixed clamp body 6 and the movable clamp body 7. The lifting block 27 is slidably installed on the spring guide rod 28 in the vertical guide groove. The spring of the spring guide rod 28 is a pre-compressed structure, which can generate an upward elastic force to limit the lifting block 27 to the top of the vertical guide groove. In this state, the center rod 25 drives the limiting member 26 to lock the bayonet end 19.

[0047] like Figures 8-11 As shown, an unloading support rod 29 is installed on the side of the lifting block 27 away from the central rod 25 by screws. The unloading support rod 29 is used as a control element to unlock the locking structure, causing the lifting block 27 to move downward, thereby enabling the unloading process. The unloading support rod 29 is vertically set, and its top end is connected to the lifting block 27. Furthermore, the bottom end of the unloading support rod 29 on the fixed clamp body 6 is fixed to one side of the bearing platform 31 by bolts, while the bottom end of the unloading support rod 29 on the movable clamp body 7 is welded and fixed to a slider 30. A limit groove 32 is provided on the other side of the bearing platform 31. The slider 30 can be inserted into the limit groove 32 to move, and is limited in the vertical direction by the limit groove 32. When the bearing platform 31 moves in the vertical direction, the unloading support rod 29 can be moved by the slider 30.

[0048] The slider 30 adopts a convex shape structure, while the limiting groove 32 adopts a convex groove and has an open top structure, which allows the slider 30 and the bearing platform 31 to move relative to each other in the horizontal direction, while also moving up and down with the bearing platform 31.

[0049] The support platform 31 is set at the front end of the fixed base 2 and is mainly used to support the workpieces cut off by sawing. The part cut off by the saw band 4 will naturally fall onto the support platform 31.

[0050] like Figure 10 , Figure 11 As shown, the carrying platform 31 is installed and lifted via a support base 33, which is welded to the discharge end of the fixed base 2. Four third springs 34 are balanced on the support base 33. These third springs are disc springs, with their ends connected to protrusions on the top surface of the support base 33 and the bottom surface of the carrying platform 31, respectively. The elastic force of the third springs 34 provides balanced support for the carrying platform 31. After sawing, the cut workpiece falls onto the carrying platform 31, breaking its balance and causing it to move downwards. The carrying platform 31 simultaneously drives the two unloading support rods 29 downwards, unlocking the locking structure. This allows the panel 16 to retract and unload along with the back plate 18, preventing excessive clamping force from deforming the cut position. After the cut workpiece is removed, the carrying platform 31 can return to its original position and move upwards, retracting the movable clamp 7. The limiting member 26 can re-lock the jaw end 19, and the floating wedge block 23 can also return to its original position.

[0051] like Figure 11 As shown, considering that the length and weight of the workpieces to be sawed are different in different processing steps, the downward distance generated by them falling on the support platform 31 is also different. Fourth springs 35 are connected to both sides of the bottom surface of the support base 33. The fourth springs 35 are helical springs. The top end of the springs is fixed to the bottom surface of the support platform 31 by a pin, and the bottom end is fixed to a horizontal support 36. An adjusting screw 37 is installed on the support base 33 by a nut. The top end of the adjusting screw 37 abuts against the support 36. By rotating the adjusting screw 37, the height of the support 36 can be adjusted, thereby changing the height of the bottom end of the fourth spring 35 and generating different elastic forces on the support platform 31. It can be adjusted according to processing needs.

[0052] In use, the operator first places the workpiece to be sawed on the conveyor roller. The front end of the workpiece passes over the clamping area between the fixed clamp 6 and the movable clamp 7, and the bottom of the workpiece contacts the upper surfaces of the fixed float 10 and the movable float 11. The operator rotates the manual screw 8 to drive the movable clamp 7 to move towards the fixed clamp 6, clamping the workpiece between the two panels 16. At this time, the limiting member 26 engages in the slot of the bayonet end 19, fixing the panel 16 relative to the clamp. After starting the saw, the lifting saw frame 3 drives the saw blade 4 to move downward to contact the workpiece and begin sawing. The saw blade 4 applies pressure to the workpiece. The sawing force is transmitted through the workpiece to the fixed float 10 and the movable float 11, overcoming the elastic force of the first spring 14 and causing the two floats to move downwards. The downward movement of the floats causes the lifting component 13 and the roller frame 15 to move downwards simultaneously. The rollers on the roller frame 15 press against the inclined surface of the floating wedge 23, generating a horizontal component force on the floating wedge 23, pushing the floating wedge 23 to move horizontally towards the clamping vertical plate of the clamp body. The floating wedge 23 drives the back plate 18 and the panel 16 to feed towards the workpiece through the back frame 22, so that the clamping force between the panel 16 and the workpiece automatically increases to counteract the downward movement of the workpiece caused by the sawing force. As sawing progresses, the workpiece is gradually cut off. When the workpiece is completely cut off, the cut-off part naturally falls onto the support platform 31. Under the weight of the workpiece, the support platform 31 overcomes the elastic force of the third spring 34 and moves downward. The downward movement of the support platform 31 causes the unloading support rod 29 to move downward. The unloading support rod 29 pulls the lifting block 27 to slide downward along the vertical guide groove. The center rod 25 and the limiting member 26 move downward simultaneously, causing the limiting member 26 to disengage from the bayonet end 19. At this time, the panel 16 is no longer locked and moves away from the panel 16 under the reaction force of the workpiece on the panel 16 and the restoring elastic force of the second spring 24. The workpiece is retracted, and the clamping force is released to avoid deformation at the saw cut due to excessive residual clamping force. After the operator removes the finished workpiece from the bearing platform 31, the bearing platform 31 is reset and moved upward under the elastic force of the third spring 34. The unloading support rod 29 is reset accordingly, and the lifting block 27 is reset and moved upward to the top of the vertical guide groove under the elastic force of the spring guide rod 28. The center rod 25 drives the limiting part 26 to re-engage in the bayonet end 19 to restore the locking structure. The operator can then rotate the manual screw 8 in the opposite direction to retract the movable clamp 7 to remove the remaining workpiece or perform the next sawing.

[0053] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal metal band saw capable of automating the machining process, comprising a bed (1), a fixed clamping body (6), a movable clamping body (7), and a manual lead screw (8) for driving the movable clamping body (7) to move relative to the fixed clamping body (6) to clamp and release the workpiece, characterized in that: The bottom of the fixed clamp (6) and the movable clamp (7) are respectively provided with floats that can generate downward displacement with the change of sawing force. The floats are held in the initial position by elastic support members and support the bottom of the workpiece. The clamp body is also movably provided with a panel (16). The panel (16) is connected to a floating wedge (23) with an inclined surface through a back plate (18). The downward displacement generated by the float rod is transmitted to the inclined surface of the floating wedge (23) through the roller and converted into a horizontal driving force, driving the panel (16) to feed towards the workpiece to dynamically compensate for the clamping force. The back plate (18) is provided with a locking structure, which normally keeps the panel (16) on the back plate (18). The discharge end of the bed (1) is provided with a bearing platform (31). The bearing platform (31) is connected to the locking structure through the unloading support rod (29). When the sawn workpiece falls onto the bearing platform (31), the bearing platform (31) moves down and triggers the locking structure to unlock through the unloading support rod (29), so that the panel (16) retracts to release the clamping force.

2. A horizontal metal band saw capable of automated processing according to claim 1, characterized in that: The float is installed at the bottom of the clamp body by lifting and lowering via the lifting member (13). A guide seat (12) is fixedly provided on the sliding plate (701) of the clamp body. The lifting member (13) consists of a top seat and a lifting rod that passes through the guide seat (12) and the sliding plate (701). The elastic support is provided between the top seat and the guide seat (12). The elastic support is a pre-compressed disc spring. The disc spring is sleeved on the rod and abuts against the bottom surface of the top seat and the upper surface of the guide seat (12).

3. A horizontal metal band saw capable of automated processing according to claim 2, characterized in that: A roller frame (15) is fixedly installed on the top seat of the lifting component (13). The roller is rotatably mounted on the roller frame (15) via a pin shaft. The roller is positioned towards the clamping vertical plate (702) of the clamp body.

4. A horizontal metal band saw capable of automated processing according to claim 1, characterized in that: The panel (16) has a feed space of 1-3mm. A connecting rod (17) is fixed on the side of the panel (16) facing the clamp body. The connecting rod (17) passes through the clamping vertical plate (702) and is connected to the bayonet end (19). The bayonet end (19) is connected to the back plate (18).

5. A horizontal metal band saw capable of automated processing according to claim 1, characterized in that: A back frame (22) is fixed on the back plate (18), and a floating wedge (23) is fixed to the bottom of the back frame (22). The inclined surface of the floating wedge (23) is set towards the roller and contacts the roller. The bottom surface of the floating wedge (23) is attached to the upper surface of the sliding plate (701) of the clamp body and can slide horizontally along the surface.

6. A horizontal metal band saw capable of automated processing according to claim 4, characterized in that: The locking structure includes a central rod (25) that is lifted and installed on the back plate (18), a limiting member (26) fixed to the end of the central rod (25) and capable of engaging with the bayonet end (19), a lifting block (27) fixed to one end of the central rod (25), and a spring guide rod (28) set on the clamp body. The lifting block (27) is slidably mounted on the spring guide rod (28), which provides an upward elastic force to keep the lifting block (27) in its initial position.

7. A horizontal metal band saw capable of automated processing according to claim 6, characterized in that: The unloading support rod (29) is set vertically and its top end is connected to the lifting block (27). The bottom end of the unloading support rod (29) on the side of the fixed clamp (6) is fixed to one side of the bearing platform (31). A slider (30) is fixed at the bottom end of the unloading support rod (29) on the side of the movable clamp (7). A limiting groove (32) is provided on the other side of the bearing platform (31). The slider (30) is inserted into the limiting groove (32) and can move up and down with the bearing platform (31). At the same time, the slider (30) and the bearing platform (31) are allowed to move relative to each other in the horizontal direction.

8. A horizontal metal band saw capable of automated processing according to claim 1, characterized in that: The carrying platform (31) is installed at the discharge end of the bed (1) via a support base (33). A third spring (34) is provided on the support base (33). The two ends of the third spring (34) are respectively connected between the support base (33) and the carrying platform (31) to keep the carrying platform (31) at the initial height.

9. A horizontal metal band saw capable of automated processing according to claim 8, characterized in that: The bottom of the support base (33) is also connected to a fourth spring (35), the top of the fourth spring (35) is connected to the bottom surface of the bearing platform (31), and the bottom end is connected to the support (36).

10. A horizontal metal band saw capable of automating the machining process according to claim 9, characterized in that: An adjusting screw (37) is installed on the support base (33). The top end of the adjusting screw (37) abuts against the support member (36). By rotating the adjusting screw (37), the height of the support member (36) can be adjusted to change the elastic force of the fourth spring (35) on the bearing platform (31).

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