Welding tool for furniture metal component

Abstract

The invention relates to the field of metal component welding, and discloses a furniture metal component welding tool which comprises a sliding plate, a mounting plate is fixedly connected to the top of the sliding plate, a mounting groove with an upward opening is formed in the top of the mounting plate, a mounting block is slidably connected into the mounting groove of the mounting plate, and a fixing clamping plate is fixedly connected to one side of the mounting block. Mounting holes are uniformly formed in one side of the mounting plate, limiting rods are slidably connected into the mounting holes of the mounting plate, one ends of the multiple limiting rods are slidably connected into the connecting holes respectively, one ends of the multiple limiting rods are fixedly connected with a connecting plate, and extension springs are uniformly and fixedly connected to one side of the connecting plate; and one end of each extension spring is fixedly connected to one side of the mounting plate. By pulling the connecting plate, the extension spring is stretched, the limiting rod is moved out of the connecting hole, the mounting block and the fixed clamping plate are taken out, the matched mounting block slides into the mounting groove, the limiting rod is reset under the counter-acting force of the extension spring, and the fixed clamping plate is replaced to adapt to welding of furniture metal components in different shapes.

Description

Technical Field

[0001] This invention relates to the field of metal component welding technology, specifically to a welding fixture for furniture metal components. Background Technology

[0002] In the modern furniture manufacturing industry, metal components are key parts that constitute the core support and connection functions of metal or composite furniture. They directly determine the structural stability, load-bearing capacity and service life of the furniture. In the production process of metal furniture, welding of metal sheets is required to ensure the stability of the furniture during use.

[0003] Traditional welding fixtures can only use a single-shaped clamp to hold and fix all components. However, the cross-sectional shapes of furniture metal components vary significantly, and the clamping surface of a single clamp cannot fit the contour of the component. This results in the clamping force being concentrated at a few points, and gaps between the component and the clamp, which makes it impossible to stably clamp the metal component and reduces the welding effect in the furniture production process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding fixture for furniture metal components. It solves the problem that traditional welding fixtures can only use a single-shaped clamping plate to clamp and fix all components. However, furniture metal components have significantly different cross-sectional shapes, and the clamping surface of a single clamping plate cannot fit the contour of the component. This results in the clamping force being concentrated at a few points, and gaps existing between the component and the clamping plate. Consequently, the metal components cannot be stably clamped, which reduces the welding effect during furniture production.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for metal components of furniture, comprising a workbench and symmetrically arranged sliding plates. A mounting plate is fixedly connected to the top of the sliding plates. An upward-opening mounting groove is formed on the top of the mounting plate. A mounting block is slidably connected within the mounting groove of the mounting plate. A fixing clamp is fixedly connected to one side of the mounting block. Mounting holes are evenly distributed on one side of the mounting plate. Limiting rods are slidably connected within the mounting holes of the mounting plate. Connecting holes are evenly distributed on the other side of the mounting block. One end of each of the multiple limiting rods is slidably connected within the connecting holes. A connecting plate is fixedly connected to one end of each of the multiple limiting rods. Tension springs are evenly fixedly connected to one side of the connecting plate. One end of each tension spring is fixedly connected to one side of the mounting plate. The inner wall of the tension spring is fitted onto the outer wall of the limiting rod. An adjustment assembly is installed inside the workbench.

[0006] By adopting the above technical solution, when dealing with components of various shapes, the connecting plate needs to be pulled, the tension spring is stretched, the limiting rod moves out of the connecting hole, the limiting fixation of the mounting block is released, and the mounting block along with the fixing clamp is taken out of the mounting groove. Then, the mounting block corresponding to the fixing clamp that is adapted to the shape of the current component is completely slid into the mounting groove. At this time, the connecting hole and the mounting hole are aligned one by one. The connecting plate is loosened, and under the reaction force of the tension spring, the limiting rod slides back into the connecting hole, completing the replacement of the fixing clamp. This realizes the quick removal and replacement of the fixing clamp, improves the versatility and applicability of the tooling, and can quickly adapt to the welding needs of metal components of furniture of different shapes, thereby improving the efficiency of the overall welding operation.

[0007] Preferably, the adjustment assembly includes a cylinder symmetrical about a central axis, one side of the cylinder is installed in the workbench, the output end of the cylinder is fixedly connected to an actuating rod, one end of each of the two actuating rods is fixedly connected to one side of the slide plate, the top of the workbench is symmetrically provided with sliding grooves, and the outer wall of the slide plate is slidably connected in the sliding grooves.

[0008] Preferably, an X-axis slide is slidably connected to one side of the worktable, a sliding block is slidably connected to the top of the X-axis slide, a threaded rod is threadedly connected to the bottom of the sliding block, both ends of the threaded rod are rotatably connected to the X-axis slide, a support base is fixedly connected to one side of the X-axis slide, a drive motor is installed inside the support base, and one end of the threaded rod is fixedly connected to the output end of the drive motor.

[0009] Preferably, a hydraulic cylinder is installed at the bottom of the sliding block, and a welding machine is installed at the actuating end of the hydraulic cylinder.

[0010] Preferably, the output end of the drive motor is fixedly connected to a drive wheel, the outer wall of the drive wheel is provided with a belt, a driven wheel is installed on the inner wall of one end of the belt, a rotating shaft is fixedly connected to the inner wall of the driven wheel, a fixed plate is fixedly connected to the top of the X-axis slide, and the outer wall of the rotating shaft is rotatably connected to the fixed plate.

[0011] Preferably, a turntable is fixedly connected to one end of the rotating shaft, a protruding rod is fixedly connected to the eccentric position of the turntable, a connecting rod is rotatably connected to the outer wall of the protruding rod, a support shaft is fixedly connected to one end of the connecting rod, and a piston rod is rotatably connected to one end of the support shaft.

[0012] Preferably, a support plate is fixedly connected to the other side of the X-axis slide, and a connecting cylinder is fixedly connected to the bottom of the support plate. One end of the piston rod is slidably connected inside the connecting cylinder, and a piston plate is fixedly connected to the bottom of the piston rod. The outer wall of the piston plate is slidably connected inside the connecting cylinder.

[0013] Preferably, an air inlet pipe is fixedly connected to the bottom of the connecting cylinder, and an air inlet solenoid valve is installed on the outer wall of the air inlet pipe.

[0014] Preferably, an air outlet pipe is fixedly connected to the bottom of the connecting cylinder, and an air outlet solenoid valve is installed on the outer wall of the air outlet pipe.

[0015] Preferably, one end of the air outlet pipe is fixedly connected to a conveying pipe, the top of the conveying pipe is fixedly connected to a connecting plate, one end of the connecting plate is fixedly connected to the output end of the hydraulic cylinder, the conveying pipe is U-shaped, and both ends of the conveying pipe are evenly fixedly connected to air blowing pipes.

[0016] Working principle: When replacing the fixed clamping plate, pulling the connecting plate stretches the tension spring, causing the limit rod to move out of the connecting hole. Remove the mounting block and fixed clamping plate, slide the appropriate mounting block into the mounting groove, aligning the connecting hole with the mounting hole. Loosen the connecting plate; the limit rod resets and fixes itself under the reaction force of the tension spring. Place the metal component on the worktable and butt weld it. The control system starts the cylinder, and the action rod drives the sliding plate to slide along the slide groove, moving the fixed clamping plate closer or further away to adjust the clamping state. The X-axis slide table drives the welding machine to slide along the X-axis, and the drive motor drives the threaded... The rod rotates, the sliding block moves along the Y-axis, and the hydraulic cylinder extends and retracts to adjust the height of the welding machine's Z-axis. The three axes work together to adjust the position of the welding machine. The drive motor simultaneously drives the drive wheel to rotate, which in turn drives the driven wheel, rotating shaft, turntable, and protruding rod to rotate via a belt. This, in turn, drives the connecting rod, piston rod, and piston plate to slide inside the connecting cylinder. When the piston plate slides up, the inlet solenoid valve opens and the outlet solenoid valve closes, allowing gas to enter the connecting cylinder through the inlet pipe. When the piston plate slides down, the inlet solenoid valve closes and the outlet solenoid valve opens, allowing gas to be output from the air blowing pipe through the delivery pipe for cleaning and cooling operations.

[0017] This invention provides a welding fixture for metal components in furniture. It offers the following advantages: 1. When replacing the fixing clamp plate, the present invention pulls the connecting plate to stretch the tension spring, moves the limiting rod out of the connecting hole, removes the mounting block and fixing clamp plate, slides the matching mounting block into the mounting groove to align the connecting hole with the mounting hole, loosens the connecting plate, and the limiting rod resets and is fixed under the reaction force of the tension spring. This realizes quick clamp replacement, improves the versatility and applicability of the tooling, and can quickly adapt to the welding needs of metal components of furniture of different shapes, thereby improving the efficiency of the overall welding operation.

[0018] 2. This invention uses an X-axis slide table to drive the welding machine to slide smoothly in the X-axis direction, a drive motor to drive the threaded rod to rotate, a sliding block to move precisely in the Y-axis direction, and the extension and retraction of the hydraulic cylinder to achieve height adjustment of the welding machine in the Z-axis direction. This can adapt to the welding needs of metal components of different thicknesses. Through the coordinated movement of these three axes, the welding machine can accurately reach any welding position of the metal component, improving the flexibility and accuracy of welding, and enhancing welding efficiency and quality.

[0019] 3. When the threaded rod is driven by the drive motor, the active wheel will rotate simultaneously. The driven wheel, rotating shaft, turntable, and protruding rod will rotate via the belt, thereby driving the connecting rod, piston rod, and piston plate to slide inside the connecting cylinder. When the piston plate slides up, the inlet solenoid valve opens and the outlet solenoid valve closes, and the gas enters the connecting cylinder through the inlet pipe. When it slides down, the inlet solenoid valve closes and the outlet solenoid valve opens, and the gas is output from the air blowing pipe through the delivery pipe for cleaning and cooling operations, thereby improving the welding effect and the quality stability of the components. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the worktable of the present invention; Figure 3 This is a partial structural diagram of the mounting plate of the present invention; Figure 4 This is a partial structural diagram of the cylinder of the present invention; Figure 5 This is a partial structural diagram of the X-axis slide of the present invention; Figure 6 This is a partial structural diagram of the turntable of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a partial structural diagram of the welding machine of the present invention.

[0021] The components include: 1. Worktable; 2. Slide plate; 201. Mounting plate; 202. Mounting groove; 203. Mounting block; 204. Fixing clamp; 205. Mounting hole; 206. Limiting rod; 207. Connecting hole; 208. Connecting plate; 209. Tension spring; 3. Cylinder; 301. Actuating rod; 302. Slide groove; 4. X-axis slide; 401. Sliding block; 402. Threaded rod; 403. Support base; 404. Drive motor; 5. Hydraulic cylinder; 501. 6. Welding machine; 601. Drive wheel; 602. Belt; 603. Driven wheel; 604. Rotating shaft; 605. Fixed plate; 7. Turntable; 701. Protruding rod; 702. Connecting rod; 703. Support shaft; 704. Piston rod; 705. Support plate; 706. Connecting cylinder; 707. Piston plate; 8. Inlet pipe; 801. Inlet solenoid valve; 802. Outlet pipe; 803. Outlet solenoid valve; 804. Conveying pipe; 805. Connecting plate; 806. Air blowing pipe. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides a welding fixture for metal furniture components, including a workbench 1 and symmetrically arranged sliding plates 2. A mounting plate 201 is fixedly connected to the top of the sliding plates 2. The top of the mounting plate 201 has an upward-opening mounting groove 202. A mounting block 203 is slidably connected within the mounting groove 202 of the mounting plate 201. A fixing clamp 204 is fixedly connected to one side of the mounting block 203. Mounting holes 205 are evenly distributed on one side of the mounting plate 201. Limiting rods 206 are slidably connected within the mounting holes 205 of the mounting plate 201. Connecting holes 207 are evenly distributed on the other side of the mounting block 203. One end of each of the multiple limiting rods 206 is slidably connected within the connecting holes 207. A connecting plate 208 is fixedly connected to one end of each of the multiple limiting rods 206. Tension springs 209 are evenly fixedly connected to one side of the connecting plate 208. One end of each tension spring 209 is fixedly connected to one side of the mounting plate 201. The inner wall of the tension spring 209 is fitted onto the outer wall of the limiting rod 206. An adjustment assembly is installed inside the workbench 1.

[0024] Specifically, when dealing with furniture metal components of a specific shape, and needing to replace the fixing plate 204 to accommodate different shapes, the operator pulls the connecting plate 208, stretching the tension spring 209. Simultaneously, the limiting rod 206 moves out of the connecting hole 207, releasing the limiting fixation on the mounting block 203. After releasing the limit, the operator removes the mounting block 203 along with the fixing plate 204 from the mounting groove 202. The mounting block 203 corresponding to the fixing plate 204 adapted to the current component shape is then fully slidably connected to the inside of the mounting groove 202. At this point, the connection... The connecting hole 207 is aligned with the mounting hole 205. The connecting plate 208 is loosened. Under the reaction force of the tension spring 209, the limiting rod 206 slides back into the connecting hole 207, and the mounting block 203 is fixed again. The replacement of the fixing clamp 204 is completed, realizing quick clamp replacement, improving the versatility and applicability of the tooling, and can quickly adapt to the welding needs of metal components of furniture of different shapes, thereby improving the efficiency of the overall welding operation. At the same time, by adjusting the cooperation of the components, it is possible to clamp and fix metal components of different sizes.

[0025] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 4 The adjustment assembly includes a cylinder 3 symmetrical about a central axis. One side of the cylinder 3 is installed in the workbench 1. The output end of the cylinder 3 is fixedly connected to an action rod 301. One end of each of the two action rods 301 is fixedly connected to one side of the slide plate 2. The top of the workbench 1 is symmetrically provided with slide grooves 302. The outer wall of the slide plate 2 is slidably connected in the slide grooves 302.

[0026] Specifically, the metal components to be welded are placed on the workbench 1 and the weld seams are aligned. The control system in the welding fixture precisely controls the cylinder 3 to start. The working end of the cylinder 3 extends or shortens according to actual needs, driving the action rod 301 to move. The movement of the action rod 301 causes the two slide plates 2 to slide in the slide groove 302, ultimately making the fixed clamping plates 204 move closer or further apart. The clamping force and position can be flexibly adjusted according to metal components of different sizes, ensuring that the metal components remain stable during the welding process and will not be displaced due to vibration or external forces, thereby effectively improving the stability and welding quality of furniture welding operations.

[0027] Please see the appendix Figure 1 Appendix Figure 5 Appendix Figure 6 Appendix Figure 8An X-axis slide 4 is slidably connected to one side of the worktable 1. A sliding block 401 is slidably connected to the top of the X-axis slide 4. A threaded rod 402 is threadedly connected to the bottom of the sliding block 401. Both ends of the threaded rod 402 are rotatably connected inside the X-axis slide 4. A support base 403 is fixedly connected to one side of the X-axis slide 4. A drive motor 404 is installed inside the support base 403. One end of the threaded rod 402 is fixedly connected to the output end of the drive motor 404. A hydraulic cylinder 5 is installed at the bottom of the sliding block 401. A welding machine 501 is installed at the working end of the hydraulic cylinder 5.

[0028] Specifically, the X-axis slide 4 drives the welding machine 501 to slide smoothly in the X-axis direction, providing the welding machine 501 with initial horizontal positioning; The drive motor 404 drives the threaded rod 402 to rotate, and the sliding block 401 moves precisely in the Y-axis direction to further adjust the position of the welding machine 501. The telescopic operation of hydraulic cylinder 5 enables the height adjustment of welding machine 501 in the Z-axis direction, which can adapt to the welding needs of metal components of different thicknesses. Through the coordinated movement of these three axes, welding machine 501 can accurately reach any welding position of metal components, improving the flexibility and accuracy of welding, and enhancing welding efficiency and quality.

[0029] Please see the appendix Figure 5 - Appendix Figure 8 The output end of the drive motor 404 is fixedly connected to the drive wheel 6. The outer wall of the drive wheel 6 is provided with a belt 601. A driven wheel 602 is installed on the inner wall of one end of the belt 601. A rotating shaft 603 is fixedly connected to the inner wall of the driven wheel 602. A fixed plate 604 is fixedly connected to the top of the X-axis slide 4. The outer wall of the rotating shaft 603 is rotatably connected to the fixed plate 604. A turntable 7 is fixedly connected to one end of a rotating shaft 603. A protruding rod 701 is fixedly connected to the eccentric position of the turntable 7. A connecting rod 702 is rotatably connected to the outer wall of the protruding rod 701. A support shaft 703 is fixedly connected to one end of the connecting rod 702. A piston rod 704 is rotatably connected to one end of the support shaft 703. A support plate 705 is fixedly connected to the other side of the X-axis slide table 4. A connecting cylinder 706 is fixedly connected to the bottom of the support plate 705. One end of the piston rod 704 is slidably connected inside the connecting cylinder 706. A piston plate 707 is fixedly connected to the bottom of the piston rod 704. The outer wall of the piston plate 707 is slidably connected inside the connecting cylinder 706. An air inlet pipe 8 is fixedly connected to the bottom of the connecting cylinder 706, and an air inlet solenoid valve 801 is installed on the outer wall of the air inlet pipe 8; an air outlet pipe 802 is fixedly connected to the bottom of the connecting cylinder 706, and an air outlet solenoid valve 803 is installed on the outer wall of the air outlet pipe 802; a conveying pipe 804 is fixedly connected to one end of the air outlet pipe 802, and a connecting plate 805 is fixedly connected to the top of the conveying pipe 804; one end of the connecting plate 805 is fixedly connected to the output end of the hydraulic cylinder 5; the conveying pipe 804 is U-shaped, and air blowing pipes 806 are evenly fixedly connected to both ends of the conveying pipe 804.

[0030] Specifically, while the drive motor 404 is working to move the welding machine 501, the output end of the drive motor 404 drives the drive wheel 6 to rotate. The drive wheel 6 drives the driven wheel 602 and the rotating shaft 603 to rotate through the belt 601. The rotation of the rotating shaft 603 causes the turntable 7 and the protruding rod 701 to rotate. The protruding rod 701 drives the connecting rod 702 to move. The connecting rod 702 then drives the piston rod 704 and the piston plate 707 to slide up and down inside the connecting cylinder 706. When the piston plate 707 slides upward, the exhaust solenoid valve 803 closes and the intake solenoid valve 801 opens, allowing external gas to enter the connecting cylinder 706 through the intake pipe 8. When the piston plate 707 slides downward, the intake solenoid valve 801 closes and the exhaust solenoid valve 803 opens, allowing gas to enter the delivery pipe 804 and be output through the blowing pipe 806. Since the connecting plate 805 is installed at the output end of the hydraulic cylinder 5, the delivery pipe 804 moves with the welding machine 501. The blowing pipe 806 is located on both sides of the welding machine 501, so the blown gas can clean and cool the weld in real time. The cleaning function removes slag and dust generated during welding, ensuring the cleanliness of the weld and improving welding quality. The cooling function accelerates the cooling and solidification of the weld, reducing welding deformation and cracks, further improving the welding effect and the quality stability of the component. The exhaust pipe 802 uses a corrugated telescopic hose. Both the intake solenoid valve 801 and the exhaust solenoid valve 803 are electrically connected to the control system.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations 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 welding fixture for metal components of furniture, comprising a worktable (1) and symmetrically arranged slides (2), characterized in that: The top of the sliding plate (2) is fixedly connected with a mounting plate (201), the mounting plate (201) is provided with an installation groove (202) with an opening upward, the installation groove (202) of the mounting plate (201) is slidably connected with a mounting block (203), one side of the mounting block (203) is fixedly connected with a fixed clamping plate (204), the mounting plate (201) is uniformly provided with a mounting hole (205) on one side, the mounting hole (205) of the mounting plate (201) is slidably connected with a limiting rod (206), the other side of the mounting block (203) is uniformly provided with a connecting hole (207), one end of the plurality of limiting rods (206) is slidably connected in the connecting hole (207), one end of the plurality of limiting rods (206) is fixedly connected with a connecting plate (208), one side of the connecting plate (208) is uniformly fixedly connected with a tension spring (209), one end of the tension spring (209) is fixedly connected on one side of the mounting plate (201), the inner wall of the tension spring (209) is sleeved on the outer wall of the limiting rod (206), and the inside of the workbench (1) is provided with an adjusting assembly.

2. A welding fixture for metal furniture components as claimed in claim 1, wherein: The adjusting assembly comprises a cylinder (3) which is centrally symmetric, one side of the cylinder (3) is installed in the workbench (1), the output end of the cylinder (3) is fixedly connected with an action rod (301), one end of the two action rods (301) is fixedly connected on one side of the sliding plate (2), the top of the workbench (1) is symmetrically provided with a sliding groove (302), and the outer wall of the sliding plate (2) is slidably connected in the sliding groove (302).

3. The welding fixture for metal furniture members according to claim 1, characterized in that: One side of the workbench (1) is slidably connected with an X-axis sliding table (4), the top of the X-axis sliding table (4) is slidably connected with a sliding block (401), the bottom of the sliding block (401) is threadedly connected with a threaded rod (402), both ends of the threaded rod (402) are rotatably connected in the X-axis sliding table (4), one side of the X-axis sliding table (4) is fixedly connected with a supporting seat (403), the inside of the supporting seat (403) is installed with a driving motor (404), one end of the threaded rod (402) is fixedly connected with the output end of the driving motor (404).

4. The welding fixture for metal furniture members according to claim 3, characterized in that: The bottom of the sliding block (401) is provided with a hydraulic cylinder (5), and the acting end of the hydraulic cylinder (5) is provided with a welding machine (501).

5. The welding fixture for metal furniture members according to claim 3, characterized in that: The output end of the driving motor (404) is fixedly connected with a driving wheel (6), the outer wall of the driving wheel (6) is provided with a belt (601), one end of the inner wall of the belt (601) is provided with a driven wheel (602), the inner wall of the driven wheel (602) is fixedly connected with a rotating shaft (603), the top of the X-axis sliding table (4) is fixedly connected with a fixed plate (604), and the outer wall of the rotating shaft (603) is rotatably connected in the fixed plate (604).

6. A welding fixture for metal furniture components as claimed in claim 5, wherein: One end of the rotating shaft (603) is fixedly connected with a rotating disc (7), the eccentric position of the rotating disc (7) is fixedly connected with a protruding rod (701), the outer wall of the protruding rod (701) is rotatably connected with a connecting rod (702), one end of the connecting rod (702) is fixedly connected with a supporting shaft (703), one end of the supporting shaft (703) is rotatably connected with a piston rod (704).

7. The welding fixture for metal furniture members according to claim 3, characterized in that: The other side of the X-axis sliding table (4) is fixedly connected with a supporting plate (705), the bottom of the supporting plate (705) is fixedly connected with a connecting barrel (706), one end of the piston rod (704) is slidably connected in the connecting barrel (706), the bottom of the piston rod (704) is fixedly connected with a piston plate (707), the outer wall of the piston plate (707) is slidably connected in the connecting barrel (706).

8. A welding fixture for metal furniture components as defined in claim 7, characterized in that: The bottom of the connecting barrel (706) is fixedly connected with an air inlet pipe (8), the outer wall of the air inlet pipe (8) is mounted with an air inlet electromagnetic valve (801).

9. The welding fixture for metal furniture components of claim 7, wherein: The bottom of the connecting barrel (706) is fixedly connected with an air outlet pipe (802), the outer wall of the air outlet pipe (802) is mounted with an air outlet electromagnetic valve (803).

10. A welding fixture for metal furniture components as claimed in claim 9, wherein: One end of the air outlet pipe (802) is fixedly connected with a conveying pipe (804), the top of the conveying pipe (804) is fixedly connected with a connecting plate (805), one end of the connecting plate (805) is fixedly connected with the output end of the hydraulic cylinder (5), the conveying pipe (804) is arranged in a U shape, and the two ends of the conveying pipe (804) are uniformly fixedly connected with air blowing pipes (806).

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