An adjustable automatic feeding rack for a saw

Abstract

This invention relates to the field of sawing technology, and more particularly to an adjustable automatic feeding rack for a sawing machine. The rack includes a sawing machine body with a loading box located at the rear. It also includes a sliding base, whose movement is controlled by a telescopic device at its rear, allowing it to move back and forth on top of the loading box. V-shaped clamps are located on both sides of the top of the sliding base, with their outer sides connected to a drive device. In this invention, when both ends of a long workpiece are clamped by the V-shaped clamps and the sawing machine, the middle section is prone to sag due to its own weight. By pulling down the connecting steel cable via an electric telescopic rod, the clamping parts on both sides are simultaneously driven to grip the sides of the workpiece inwards. At the same time, the other end of the steel cable pulls down the pressure roller to press the top of the workpiece downwards. This three-point coordinated constraint of "gripping on both sides + pressing down on the top" provides reliable intermediate support for the suspended section of the long workpiece, increasing the bending stiffness of this section, effectively correcting and preventing sagging deformation in the middle section during processing, and ensuring the straightness of the cut for long shaft-type parts.

Description

Technical Field

[0001] This invention relates to the field of sawing technology, and more particularly to an adjustable automatic feeding rack for sawing. Background Technology

[0002] In the field of metal processing, the saw is a key piece of equipment used for cutting cylindrical workpieces such as bars and tubes to a fixed length. Its processing accuracy and efficiency are highly dependent on the stability of the feeder and the reliability of the clamping mechanism.

[0003] However, existing saw feeders generally have the following prominent problems: Traditional feeders mostly use fixed-position V-blocks or clamp-type fixtures, and their clamping points are relatively fixed. For extra-long workpieces, due to the excessive distance between the clamping points at both ends, the middle part is in a suspended state. Under its own weight and sawing vibration, it is prone to elastic sagging and low-frequency chatter, resulting in tilted cutting surfaces, rough cross-sections, and even saw blade tooth breakage. For shorter workpieces, the rear end often lacks effective clamping. At the moment the saw blade cuts in, the cutting force will cause the workpiece to warp or rotate around the front clamping point, causing loss of control of the processing position and, in severe cases, safety accidents. It is often necessary to manually add or remove auxiliary supports, which is inefficient and unreliable.

[0004] Therefore, how to provide an adjustable automatic feeding rack for sawing machines is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable automatic feeding rack for a saw to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adjustable automatic feeding rack for a saw, including a saw body, a feeding box provided on the rear side of the saw body, and further comprising; The sliding base moves back and forth on the top of the loading box via a telescopic device on its rear side. V-shaped clamps are set on both sides of the top of the sliding base, and their outer sides are connected to the drive device to drive it to move synchronously inward or outward on the top of the sliding base. The feeding rack is located on the rear side of the sliding base and connected to the sliding base. The cylindrical workpiece passes through the middle and extends to the inside of the V-shaped clamp. The clamping component is movably mounted on the left and right sides inside the feeding rack, and the bottom of the feeding rack is equipped with a control unit that can move synchronously with the feeding rack. When working, the control unit can control the clamping component to move synchronously inward or outward inside the feeding rack. The pressure roller is located at the top center of the feeding rack via an elastic unit, and can be lowered or raised at the top of the feeding rack when the control unit is working.

[0007] Furthermore, the top of the saw body is provided with a cutting blade holder that can move up and down, the bottom of the cutting blade holder is provided with a saw blade, the rear side of the saw body is fixedly connected to the feeding box, and the rear side of the top of the feeding box is provided with a transition roller frame.

[0008] Furthermore, a fixed seat is provided on the top of the feeding box below the transition roller frame, and a hydraulic telescopic rod is provided on the rear side of the fixed seat. The front end of the hydraulic telescopic rod is connected to the sliding base, and a guide rod is provided on the front of the fixed seat. The sliding base is slidably connected to the guide rod. By controlling the operation of the hydraulic telescopic rod, the sliding base can be driven to move on the guide rod.

[0009] Furthermore, support frames are provided on the left and right sides of the top of the sliding base, and a second hydraulic telescopic rod is provided on the outside of the support frame. The telescopic end of the second hydraulic telescopic rod passes through the support frame and extends to the top of the sliding base to connect with the V-shaped clamp. When working, the second hydraulic telescopic rod can drive the V-shaped clamp to move on the top of the sliding base.

[0010] Furthermore, damping rods are provided on both the left and right sides of the feeding rack, and a spring is provided on the outer side of the damping rod. The ends of the damping rods and the spring away from the feeding rack are connected to the clamping component.

[0011] Furthermore, the control unit includes an electric telescopic rod II, a lifting plate, and a connecting steel cable. The electric telescopic rod II is located on the left and right sides of the bottom of the feeding frame. The bottom of the electric telescopic rod II is connected to the lifting plate, and the top of the lifting plate is connected to the connecting steel cable. The end of the connecting steel cable away from the lifting plate is wrapped around the outside of the clamping member.

[0012] Furthermore, the elastic unit includes a second spring, a lifting seat, a connector, and a first connector. The first connector is connected to the end of the connecting steel cable away from the lifting plate. The second spring is located in the middle of the top of the feeding frame. The bottom of the second spring is connected to the lifting seat. The connector is located on the outside of the lifting seat. When the lifting plate is tightened, the connector can apply a downward pulling force to the connector through the first connector.

[0013] Furthermore, an electric telescopic rod is provided on the left and right sides of the feeding rack. The telescopic end of the electric telescopic rod passes through the outer wall of the feeding rack and extends to the inner side of the feeding rack to connect with the extrusion rack. The extension plate is provided on the side of the clamping member close to the feeding rack, and the side of the extrusion rack and the extension plate that are close to each other are both flat. When the electric telescopic rod is working, it can drive the extrusion rack to extrude the extension plate.

[0014] Furthermore, the bottom left and right sides of the feeding rack are provided with rectangular grooves to accommodate the movement of the lifting plate. The bottom of the feeding rack is provided with a transition roller outside the rectangular groove. The lifting plate is in contact with the surface of the transition roller. Multiple sliding rings are provided in the middle of the outer side of the clamping member. The lifting plate passes through the middle of the multiple sliding rings from bottom to top and extends to the upper side of the clamping member to connect with the connector.

[0015] Furthermore, protective frames are provided on the top left and right sides of the feeding rack, and the lower pressure wheel is located inside the protective frame and performs lifting and lowering operations within the protective frame.

[0016] Furthermore, it also includes a feeding mechanism, which comprises a hydraulic telescopic rod one, a sliding base, a hydraulic telescopic rod two, and a V-shaped clamp; The first hydraulic telescopic rod is fixedly connected to the top of the feeding box, the sliding base is fixedly connected to the telescopic end of the first hydraulic telescopic rod, the second hydraulic telescopic rod is fixedly connected to the left and right sides of the top of the sliding base, and the V-shaped clamp is fixedly connected to the telescopic end of the second hydraulic telescopic rod.

[0017] Furthermore, it also includes auxiliary mechanisms, which include a feeding rack, a damping rod, a clamping component, an extension plate, an electric telescopic rod, and an extrusion rack; The feeding rack is fixedly connected to the top of the back of the sliding base. The damping rod is fixedly connected to the left and right sides inside the feeding rack. The clamping member is fixedly connected to the end of the damping rod away from the feeding rack. The extension plate is fixedly connected to the middle of the clamping member on the side near the feeding rack. The electric telescopic rod is fixedly connected to the left and right sides of the feeding rack. The extrusion rack is fixedly connected to the telescopic end of the electric telescopic rod.

[0018] Furthermore, it also includes a fixing mechanism, which includes an electric telescopic rod II, a lifting guide frame, a lifting plate, a connecting steel cable, a transition roller, a connector I, and a sliding ring; The second electric telescopic rod is fixedly connected to the middle of the left and right sides of the bottom of the feeding frame. The lifting guide frame is fixedly connected to the bottom of the feeding frame and located outside the feeding frame. The lifting plate is slidably connected to the inner side of the lifting guide frame. The connecting steel cable is fixedly connected to the top of the lifting plate. The transition roller is fixedly connected to the bottom of the feeding frame and located inside the feeding frame. The first connector is fixedly connected to the end of the connecting steel cable away from the lifting plate. The sliding ring is fixedly connected to the outer side of the clamping member. The bottom of the second electric telescopic rod is fixedly connected to the top of the lifting plate.

[0019] Furthermore, it also includes a protective mechanism, which includes a protective frame, a second spring, a lifting seat, a lower pressure wheel, and connecting parts; The protective frame is fixedly connected to the top of the feeding frame, the second spring is fixedly connected to the middle of the top of the feeding frame and located inside the protective frame, the lifting seat is fixedly connected to the bottom of the second spring, the lower pressure wheel is rotatably connected to the bottom of the lifting seat, and the connecting piece is fixedly connected to the outside of the lifting seat.

[0020] Furthermore, the protective frame has through-hole limiting grooves on both the left and right sides, and the lifting seat is located inside the limiting grooves. The lifting seat is slidably connected to the inner side of the protective frame through the limiting grooves.

[0021] Furthermore, a sliding rod is provided on the side of the extrusion frame away from the clamping member, and sliding holes corresponding to the sliding rod are opened on the inner walls of the left and right sides of the feeding frame. The extrusion frame is slidably connected to the inner wall of the feeding frame through the sliding rod and the sliding holes.

[0022] Furthermore, a pressure monitor is installed at the connection point between the inner side of the lifting plate and the connecting steel cable.

[0023] The beneficial effects of this invention are: 1. In this invention, when both ends of a long workpiece are clamped by a V-shaped clamp and a saw, the middle part is prone to sag due to its own weight. By pulling down the connecting steel cable through the electric telescopic rod, the clamping parts on both sides are driven to hug the sides of the workpiece inward. At the same time, the other end of the steel cable pulls the pressure wheel down to press the top of the workpiece. This three-point coordinated constraint of "hugging on both sides + pressing down on the top" provides reliable intermediate support for the suspended section of the long workpiece, increases the bending stiffness of this section, effectively corrects and prevents the sagging deformation in the middle part during the processing, and ensures the straightness of the cutting of long shaft-type parts. 2. In this invention, when a short workpiece is cut by the saw blade, its rear end is very prone to warping or rotating around the front clamping point under the action of cutting force. The pressure roller can accurately press the top of the cantilever end of the workpiece at the rear, providing a stable downward pressure. At the same time, the clamping parts on both sides apply a squeezing force to the rear side. This combined action of "pressure + side clamping" provides an additional and reliable "rear clamping point" for the short workpiece, completely eliminating the risk of warping and rotation during the processing of short materials, and significantly improving clamping stability and processing safety. 3. In this invention, sawing vibration can easily cause the workpiece to shift slightly within the fixture, affecting the perpendicularity and smoothness of the cut. The clamping component is connected to the feeding frame through a damping rod and a spring, forming a flexible damping structure that can effectively absorb and dissipate cutting vibration energy. At the same time, the electric telescopic rod can drive the extrusion frame to perform secondary extrusion on the clamping component, thereby slightly increasing the clamping force in the vibration environment and actively resisting workpiece shift. This "passive damping + active clamping" mechanism ensures the stability of the workpiece during processing, thereby obtaining a smoother and more perpendicular cutting surface. 4. In this invention, traditional rigid clamping generates harmful internal stress when the workpiece expands due to heat during cutting. The connecting steel cable, multiple damping rods, and springs one and two constitute a "limited flexibility" constraint system. When the workpiece expands due to heat, the clamping force is allowed to adjust adaptively within a small range, rather than being absolutely locked. This avoids the huge internal stress caused by the forced suppression of thermal expansion, reduces the deformation of the workpiece after cooling, and protects the saw blade from abnormal stress impact. 5. In this invention, a pressure monitor installed at the connection between the lifting plate and the connecting steel cable can detect changes in clamping force in real time. Abnormal vibrations during the cutting process, such as saw blade breakage or cutting jerks, will be immediately reflected as sudden changes in clamping force. This signal can be used for online early warning to improve processing efficiency. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an adjustable automatic feeding rack for a saw proposed in this invention. Figure 2 This is a schematic diagram of the transition roller frame of an adjustable automatic feeding rack for a sawing machine proposed in this invention. Figure 3 This is a schematic diagram of two hydraulic telescopic rods in an adjustable automatic feeding rack for a sawing machine, as proposed in this invention. Figure 4 This is an exploded structural diagram of a hydraulic telescopic rod of an adjustable automatic feeding rack for a sawing machine, as proposed in this invention. Figure 5 This is a schematic diagram of the feeding rack structure of an adjustable automatic feeding rack for a sawing machine proposed in this invention. Figure 6 This is a schematic diagram of the clamping component of an adjustable automatic feeding rack for a saw proposed in this invention. Figure 7 This is a schematic diagram of the transition roller structure of an adjustable automatic feeding rack for a sawing machine proposed in this invention. Figure 8 This is an exploded structural diagram of the extrusion frame of an adjustable automatic feeding rack for a sawing machine proposed in this invention. Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Sawing machine body; 2. Cutting tool holder; 3. Saw blade; 4. Feeding box; 5. Transition roller frame; 6. Feeding mechanism; 601. Hydraulic telescopic rod one; 602. Sliding base; 603. Hydraulic telescopic rod two; 604. V-shaped clamp; 7. Auxiliary mechanism; 701. Feeding frame; 702. Damping rod; 703. Clamping component; 704. Extension plate; 705. Electric telescopic rod one; 706. Extrusion frame; 8. Fixing mechanism; 801. Electric telescopic rod two; 802. Lifting guide frame; 803. Lifting plate; 804. Connecting steel cable; 805. Transition roller; 806. Connector one; 807. Sliding ring; 9. Protective mechanism; 901. Protective frame; 902. Spring two; 903. Lifting seat; 904. Lower pressure roller; 905. Connecting component. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0027] The existing saw feeder has at least the following problems: 1. It cannot adapt to the length of the workpiece. When processing a long workpiece, the middle part is suspended. Under its own weight and sawing vibration, it is prone to elastic sagging and low-frequency chatter, resulting in tilted cutting surface, rough cross-section, and even saw blade tooth breakage. For shorter workpieces, the rear end often lacks effective clamping. At the moment the saw blade cuts in, the cutting force will cause the workpiece to warp or rotate around the front clamping point, causing loss of control of the processing position and, in severe cases, safety accidents. 2. Most existing fixtures adopt a purely rigid structure (such as rigid V-blocks combined with hydraulic direct clamping). Although they can provide a large clamping force, they are used on workpieces with large stress, making the workpiece surface easily damaged. They are not suitable for materials such as fine pipes and stainless steel with high surface quality requirements. Rigid clamping directly transmits sawing vibration to the workpiece and frame without buffering and damping, which aggravates tool wear and noise. During continuous sawing, the local temperature rise of the workpiece causes thermal expansion, and the rigid fixture will lock and deform, resulting in the accumulation of internal stress. After release, it will cause the workpiece to bend or drift in size. 3. During long-term or high-load cutting, the workpiece is affected by factors such as vibration and heat, and is prone to slight displacement within the fixture. Once displacement occurs, the machine must be stopped for manual adjustment, which affects the consistency of batch production.

[0028] Example 1: Reference Figures 1-9 The present invention provides a technical solution: an adjustable automatic feeding rack for a saw, including a saw body 1, a feeding box 4 provided on the rear side of the saw body 1, and further comprising; The sliding base 602 is controlled by a telescopic device on its rear side to move back and forth on the top of the loading box 4; V-shaped clamps 604 are disposed on both sides of the top of the sliding base 602, and their outer sides are connected to the drive device to drive them to move synchronously inward or outward on the top of the sliding base 602. The feeding rack 701 is located on the rear side of the sliding base 602 and connected to the sliding base 602. The cylindrical workpiece passes through the middle and extends to the inside of the V-shaped clamp 604. The clamping member 703 is movably disposed on the left and right sides inside the feeding rack 701, and the bottom of the feeding rack 701 is provided with a control unit that can move synchronously with the feeding rack 701. When working, the control unit can control the clamping member 703 to move synchronously inward or outward inside the feeding rack 701. The pressure roller 904 is located in the middle of the top of the feeder 701 via an elastic unit, and can be lowered or raised at the top of the feeder 701 when the control unit is working.

[0029] Example 2: Reference Figures 1-4 Based on Embodiment 1, the present invention provides a technical solution: a cutting blade holder 2 that can move up and down is provided on the top of the saw body 1, a saw blade 3 is provided at the bottom of the cutting blade holder 2, the rear side of the saw body 1 is fixedly connected to the feeding box 4, and a transition roller frame 5 is provided on the rear side of the top of the feeding box 4.

[0030] A fixed seat is provided on the top of the feeding box 4 below the transition roller frame 5. A hydraulic telescopic rod 601 is provided on the rear side of the fixed seat. The front end of the hydraulic telescopic rod 601 is connected to the sliding base 602. A guide rod is provided on the front of the fixed seat. The sliding base 602 is slidably connected to the guide rod. By controlling the operation of the hydraulic telescopic rod 601, the sliding base 602 can be driven to move on the guide rod.

[0031] Support frames are provided on the top left and right sides of the sliding base 602. A hydraulic telescopic rod 603 is provided on the outside of the support frame. The telescopic end of the hydraulic telescopic rod 603 passes through the support frame and extends to the top of the sliding base 602 to connect with the V-shaped clamp 604. When working, the hydraulic telescopic rod 603 can drive the V-shaped clamp 604 to move on the top of the sliding base 602.

[0032] It also includes a feeding mechanism 6, which includes a hydraulic telescopic rod 601, a sliding base 602, a hydraulic telescopic rod 603, and a V-shaped clamp 604; Hydraulic telescopic rod 1 601 is fixedly connected to the top of the feeding box 4, sliding base 602 is fixedly connected to the telescopic end of hydraulic telescopic rod 1 601, hydraulic telescopic rod 2 603 is fixedly connected to the left and right sides of the top of sliding base 602, and V-shaped clamp 604 is fixedly connected to the telescopic end of hydraulic telescopic rod 2 603.

[0033] Example 3: Reference Figures 4-9 Based on Embodiment 2, the present invention provides a technical solution: damping rods 702 are provided on both the left and right sides of the feeding rack 701, and a spring is provided on the outside of the damping rods 702. The ends of the damping rods 702 and the spring away from the feeding rack 701 are both connected to the clamping member 703.

[0034] The control unit includes an electric telescopic rod 801, a lifting plate 803, and a connecting steel cable 804. The electric telescopic rod 801 is located on the left and right sides of the bottom of the feeding rack 701. The bottom of the electric telescopic rod 801 is connected to the lifting plate 803. The top of the lifting plate 803 is connected to the connecting steel cable 804. The end of the connecting steel cable 804 away from the lifting plate 803 is wrapped around the outside of the clamping member 703.

[0035] The elastic unit includes a second spring 902, a lifting seat 903, a connector 905, and a first connector 806. The first connector 806 is connected to the end of the connecting steel cable 804 away from the lifting plate 803. The second spring 902 is located in the middle of the top of the feeding frame 701. The bottom of the second spring 902 is connected to the lifting seat 903. The connector 905 is located on the outside of the lifting seat 903. When the lifting plate 803 is tightened, the first connector 806 can apply a downward pulling force to the connector 905.

[0036] Electric telescopic rods 705 are provided on the left and right sides of the feeding rack 701. The telescopic end of the electric telescopic rod 705 passes through the outer wall of the feeding rack 701 and extends to the inner side of the feeding rack 701 to connect with the extrusion rack 706. The extension plate 704 is provided on the side of the clamping member 703 near the feeding rack 701. The extrusion rack 706 and the side of the extension plate 704 that are close to each other are both flat. When the electric telescopic rod 705 is working, it can drive the extrusion rack 706 to extrude the extension plate 704.

[0037] The bottom left and right sides of the feeding rack 701 are provided with rectangular slots to accommodate the movement of the lifting plate 803. The bottom of the feeding rack 701 is provided with a transition roller 805 on the outside of the rectangular slot. The lifting plate 803 is in contact with the surface of the transition roller 805. Multiple sliding rings 807 are provided in the middle of the outer side of the clamping member 703. The lifting plate 803 passes through the middle of the multiple sliding rings 807 from bottom to top and extends to the upper side of the clamping member 703 to connect with the connector 806.

[0038] The top left and right sides of the feeding rack 701 are equipped with protective frames 901, and the lower pressure rollers 904 are located inside the protective frames 901 and perform lifting and lowering operations inside the protective frames 901.

[0039] It also includes an auxiliary mechanism 7, which includes a feeding rack 701, a damping rod 702, a clamping member 703, an extension plate 704, an electric telescopic rod 705, and an extrusion rack 706. The feeding rack 701 is fixedly connected to the top of the back of the sliding base 602. The damping rod 702 is fixedly connected to the left and right sides inside the feeding rack 701. The clamping member 703 is fixedly connected to the end of the damping rod 702 away from the feeding rack 701. The extension plate 704 is fixedly connected to the middle of the side of the clamping member 703 near the feeding rack 701. The electric telescopic rod 705 is fixedly connected to the left and right sides of the feeding rack 701. The extrusion rack 706 is fixedly connected to the telescopic end of the electric telescopic rod 705.

[0040] It also includes a fixing mechanism 8, which includes an electric telescopic rod 801, a lifting guide frame 802, a lifting plate 803, a connecting steel cable 804, a transition roller 805, a connector 806, and a sliding ring 807. Electric telescopic rod 2 801 is fixedly connected to the middle of the left and right sides of the bottom of the feeding rack 701. Lifting guide frame 802 is fixedly connected to the bottom of the feeding rack 701 and is located on the outside of the feeding rack 701. Lifting plate 803 is slidably connected to the inside of the lifting guide frame 802. Connecting steel cable 804 is fixedly connected to the top of the lifting plate 803. Transition roller 805 is fixedly connected to the bottom of the feeding rack 701 and is located on the inside of the feeding rack 701. Connector 1 806 is fixedly connected to the end of the connecting steel cable 804 away from the lifting plate 803. Sliding ring 807 is fixedly connected to the outside of the clamping member 703. The bottom of electric telescopic rod 2 801 is fixedly connected to the top of the lifting plate 803.

[0041] It also includes a protective mechanism 9, which includes a protective frame 901, a second spring 902, a lifting seat 903, a lower pressure wheel 904, and a connecting piece 905; The protective frame 901 is fixedly connected to the top of the feeding frame 701. The second spring 902 is fixedly connected to the middle of the top of the feeding frame 701 and is located inside the protective frame 901. The lifting seat 903 is fixedly connected to the bottom of the second spring 902. The lower pressure wheel 904 is rotatably connected to the bottom of the lifting seat 903. The connecting piece 905 is fixedly connected to the outside of the lifting seat 903.

[0042] The protective frame 901 has through-hole limiting grooves on both the left and right sides, and the lifting seat 903 is located inside the limiting grooves. The lifting seat 903 is slidably connected to the inner side of the protective frame 901 through the limiting grooves.

[0043] The extrusion frame 706 is provided with a slide rod on the side away from the clamping member 703. The inner walls of the left and right sides of the feeding frame 701 are provided with sliding holes corresponding to the slide rod. The extrusion frame 706 is slidably connected to the inner wall of the feeding frame 701 through the slide rod and the sliding holes.

[0044] A pressure monitor is installed at the connection point between the inner side of the lifting plate 803 and the connecting steel cable 804.

[0045] Working principle: When machining a long cylindrical workpiece, because both its front and rear ends are effectively clamped, the longer middle section is suspended, causing it to sag. At this time, the hydraulic telescopic rod 603 and the V-shaped clamp 604 clamp the cylindrical workpiece, with its rear portion positioned inside the feed rack 701. Then, the electric telescopic rod 801 operates, driving the lifting plate 803 and connecting cable 804 downwards. As the connecting cable 804 descends, pressure is applied to the clamping member 703 via the sliding ring 807, causing the clamping member 703 to... 03 The damping rods 702 on both sides and the spring are stretched and pressed tightly against the outside of the cylindrical workpiece, which can clamp the outside of the cylindrical workpiece. At the same time, the other end of the connecting steel cable 804 pulls the connector 806 and the connector 905 connected to it, so that the connector 905 and the lifting seat 903 are subjected to force, and the lower pressure wheel 904 moves downward inside the protective frame 901, so that the lower pressure wheel 904 contacts the top of the cylindrical workpiece. This can apply pressure to the sides and top of the long cylindrical workpiece, avoid the phenomenon of sagging in the middle due to the workpiece being too long, and ensure the quality of subsequent processing. When machining shorter cylindrical workpieces, the V-shaped clamp 604 cannot effectively hold the rear side of the workpiece due to its short total length. When the cutting tool holder 2 moves down and the saw blade 3 contacts the top of the workpiece, the rear side of the workpiece will warp upward. If the feed speed is too fast during cutting, the workpiece will rotate around the contact point with the V-shaped clamp 604, requiring repeated adjustments during machining. At this time, controlling the electric telescopic rod 801 to move down allows the pressure roller 904 to contact the top of the rear end of the cylindrical workpiece, applying downward pressure to the rear side of the cylindrical workpiece to prevent warping of the shorter workpiece. The clamping member 703 applies pressure to both sides of the rear of the cylindrical workpiece, providing effective clamping and protection for the rear side when machining shorter workpieces. As the machining process progresses, the saw blade 3 generates high-frequency vibrations when cutting the cylindrical workpiece. As the vibration time increases, the cylindrical workpiece inside the V-shaped clamp 604 will slightly shift due to the vibration. This shift will result in an uneven cut surface during subsequent machining, and the shift of the cylindrical workpiece will also lead to poor cut perpendicularity, resulting in a decrease in machining quality. By setting up an electric telescopic rod 705, when machining a longer cylindrical workpiece, the electric telescopic rod 705 moves the extrusion frame 706 and extrudes the extension plate 704 on the outside of the clamping member 703. Since the contact surfaces of the extrusion frame 706 and the extension plate 704 are both smooth planes, the clamping member 703 is subjected to the same force on the front and rear sides, which enables the extension plate 704 to be stressed and drive the clamping member 703 to move, thus providing protection on both sides of the longer cylindrical workpiece and preventing workpiece shift due to vibration. During machining, the workpiece will expand due to cutting heat. Traditional rigid clamps will lock the workpiece, resulting in no place for thermal expansion to be released, generating huge internal stress. When the workpiece cools and shrinks after machining, it will be severely deformed. By setting the connecting steel cable 804, it can adapt to the extension within a certain limit, avoiding excessive stress concentration during clamping and causing damage to the workpiece surface. When machining shorter cylindrical workpieces, the electric telescopic rod 705 presses against the clamping member 703, enabling the clamping member 703 to prevent the shorter cylindrical workpiece from shifting. The secondary pressure of the clamping member 703 ensures the stability of the rear side of the cylindrical workpiece and provides clamping for the rear side. At the same time, the damping rod 702 can absorb the vibration generated during machining, improving the clamping effect of the shorter cylindrical workpiece.

[0046] By setting up a pressure monitor, the processing process can be monitored in real time. At the same time, based on the changes in the pressure monitor values, it can be determined that if the saw band 3 becomes dull or chipped during processing, the vibration on the workpiece will increase, causing the values ​​to change rapidly. This allows for monitoring of the stability during the processing process and further ensures the processing quality.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable automatic feeding rack for a saw, comprising a saw body (1), characterized in that: The saw body (1) is provided with a loading box (4) on the rear side, and also includes; The sliding base (602) is controlled by the telescopic device on its rear side to move back and forth on the top of the loading box (4); V-shaped clamps (604) are provided on both sides of the top of the sliding base (602), and their outer sides are connected to the drive device to drive them to move synchronously inward or outward on the top of the sliding base (602); The feed rack (701) is located on the rear side of the sliding base (602) and connected to the sliding base (602). The cylindrical workpiece passes through the middle and extends to the inside of the V-shaped clamp (604). The clamping member (703) is movably disposed on the left and right sides inside the feeding rack (701), and the bottom of the feeding rack (701) is provided with a control unit that can move synchronously with the feeding rack (701). When working, the control unit can control the clamping member (703) to move synchronously inward or outward inside the feeding rack (701). The pressure roller (904) is located at the top center of the feeder (701) via an elastic unit, and can be lowered or raised at the top of the feeder (701) when the control unit is working.

2. The adjustable automatic feeding rack for a sawing machine according to claim 1, characterized in that: The top of the saw body (1) is provided with a cutting blade holder (2) that can move up and down, and the bottom of the cutting blade holder (2) is provided with a saw blade (3). The rear side of the saw body (1) is fixedly connected to the feeding box (4), and the rear side of the top of the feeding box (4) is provided with a transition roller frame (5).

3. An adjustable automatic feeding rack for a sawing machine according to claim 2, characterized in that: The top of the feeding box (4) is provided with a fixed seat below the transition roller frame (5). A hydraulic telescopic rod (601) is provided on the rear side of the fixed seat. The front end of the hydraulic telescopic rod (601) is connected to the sliding base (602). A guide rod is provided on the front of the fixed seat. The sliding base (602) is slidably connected to the guide rod. By controlling the operation of the hydraulic telescopic rod (601), the sliding base (602) can be driven to move on the guide rod.

4. An adjustable automatic feeding rack for a sawing machine according to claim 3, characterized in that: The sliding base (602) is provided with support frames on the top left and right sides. A hydraulic telescopic rod (603) is provided on the outside of the support frame. The telescopic end of the hydraulic telescopic rod (603) passes through the support frame and extends to the top of the sliding base (602) to connect with the V-shaped clamp (604). When working, the hydraulic telescopic rod (603) can drive the V-shaped clamp (604) to move on the top of the sliding base (602).

5. An adjustable automatic feeding rack for a sawing machine according to claim 4, characterized in that: Damping rods (702) are provided on both the left and right sides of the feeding rack (701). A spring is provided on the outside of the damping rod (702). The ends of the damping rod (702) and the spring away from the feeding rack (701) are connected to the clamping member (703).

6. An adjustable automatic feeding rack for a sawing machine according to claim 5, characterized in that: The control unit includes an electric telescopic rod (801), a lifting plate (803), and a connecting steel cable (804). The electric telescopic rod (801) is located on the left and right sides of the bottom of the feeding rack (701). The bottom of the electric telescopic rod (801) is connected to the lifting plate (803). The top of the lifting plate (803) is connected to the connecting steel cable (804). The end of the connecting steel cable (804) away from the lifting plate (803) is wrapped around the outside of the clamping member (703).

7. An adjustable automatic feeding rack for a sawing machine according to claim 6, characterized in that: The elastic unit includes a second spring (902), a lifting seat (903), a connector (905), and a first connector (806). The first connector (806) is connected to the end of the connecting steel cable (804) away from the lifting plate (803). The second spring (902) is located in the middle of the top of the feeding frame (701). The bottom of the second spring (902) is connected to the lifting seat (903). The connector (905) is located on the outside of the lifting seat (903). When the lifting plate (803) is tightened, the first connector (806) can apply a downward pulling force to the connector (905).

8. An adjustable automatic feeding rack for a sawing machine according to claim 7, characterized in that: The feeding rack (701) is provided with an electric telescopic rod (705) on the left and right sides. The telescopic end of the electric telescopic rod (705) passes through the outer wall of the feeding rack (701) and extends to the inner side of the feeding rack (701) to connect with the extrusion rack (706). The extension plate (704) is provided on the side of the clamping member (703) near the feeding rack (701). The extrusion rack (706) and the side of the extension plate (704) that are close to each other are both flat. When the electric telescopic rod (705) is working, it can drive the extrusion rack (706) to extrude the extension plate (704).

9. An adjustable automatic feeding rack for a sawing machine according to claim 8, characterized in that: The bottom left and right sides of the feeding rack (701) are provided with rectangular slots to accommodate the movement of the lifting plate (803). The bottom of the feeding rack (701) is provided with a transition roller (805) outside the rectangular slot. The lifting plate (803) is in contact with the surface of the transition roller (805). Multiple sliding rings (807) are provided in the middle of the outer side of the clamping member (703). The lifting plate (803) passes through the middle of the multiple sliding rings (807) from bottom to top and extends to the upper side of the clamping member (703) to connect with the connector (806).

10. An adjustable automatic feeding rack for a sawing machine according to claim 9, characterized in that: The top left and right sides of the feeding rack (701) are provided with protective frames (901), and the lower pressure wheel (904) is located inside the protective frame (901) and performs lifting and lowering operations inside the protective frame (901).

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