Welding device for filter press roller machining

Abstract

The invention provides a welding device for filter press roller machining, and belongs to the technical field of roller welding. The welding device comprises a workbench, a spindle box is installed on the workbench, a spindle is installed in the spindle box, a chuck is installed at the end of the spindle, a centering hold-down mechanism is arranged on the workbench, longitudinal moving assemblies are arranged at the two ends of the workbench respectively, and a fixing rod is fixed between the two longitudinal moving assemblies; a clamping mechanism is arranged on the fixing rod; the clamping mechanism comprises two mounting plates fixed to the fixing rod, a clamping assembly is arranged between the two mounting plates, and the clamping assembly comprises a lower clamping base plate and a driving mounting base which are fixed between the mounting plates; a lower clamping seat is arranged at the end part of the lower clamping base plate; an automatic telescopic cylinder I is mounted on the driving mounting seat, an upper clamping seat is hinged to the moving end of the automatic telescopic cylinder I, and a guide rod is fixed on the upper clamping seat; the problem that angle steel postures are prone to deviation in the traditional welding and positioning process can be solved, and the welding precision and consistency are improved.

Description

Technical Field

[0001] This application relates to the field of drum welding technology, specifically to a welding device for processing filter press drums. Background Technology

[0002] Belt filter presses are key equipment in the field of solid-liquid separation. One of its core components, the filter press drum (often called the press roller), typically uses a steel cylinder structure. The main body of the drum is cylindrical, and the cylinder is made of rolled and welded steel plates. To enhance overall rigidity and provide the necessary dewatering and squeezing functions, a series of angle steels are welded at equal intervals and parallel to each other along the circumference of the outer surface of the drum. The axes of these angle steels are parallel to the axis of the drum, forming longitudinal reinforcing ribs around the cylinder. This structure not only significantly improves the rigidity and stability of the drum, but also, in actual operation, can work in conjunction with the filter belt to continuously squeeze the material, thereby effectively squeezing out the liquid and improving the dewatering effect.

[0003] In traditional welding processes, the assembly and positioning of angle steel and the drum body is a technical challenge. Because the angle steel needs to be evenly spaced along the circumference and strictly parallel to the drum axis, traditional manual welding or simple tooling makes precise positioning difficult, easily leading to uneven circumferential spacing. This not only results in inconsistent weld joint strength and poor weld formation but also disrupts the symmetry of the drum's mass distribution, directly affecting dynamic balance performance and the stable operation of the filter press.

[0004] Referring to Chinese Patent Document CN223684727U, a roller welding positioning device is disclosed, which includes a base and a shaft positioning and clamping assembly, a flange positioning mechanism, a cylinder positioning mechanism, and a baffle positioning and clamping mechanism disposed on the base. This device clamps the intermediate shaft of the roller through a combination of a rotary clamping mechanism and a rotary tightening mechanism, and utilizes a rotary mechanism with an indexing plate and positioning pins to achieve precise positioning and indexing rotation of the roller in the circumferential direction. This positioning device ensures that accessories such as flanges and baffles are evenly distributed and accurately positioned on the circumference of the roller body, thereby improving welding accuracy, enhancing the dynamic balance performance of the roller, and reducing dynamic balance problems caused by inconsistent welding positions.

[0005] While the aforementioned technical solution can ensure that the distance from the welding position of each blade to the center of the cylinder remains consistent through the positioning device, the angle steel is an L-shaped structure composed of double-bladed plates. During welding of the angle steel to the drum, one end of the blade of the angle steel must be flush with the outer surface of the drum, and the other end must be perpendicular to the drum surface. However, in actual positioning operations, due to the structural limitations of the angle steel, even if one end of the blade is flush with the outer surface of the drum, the other end is prone to deviation and cannot be perpendicular to the drum surface. This results in the center extension line of the angle steel blade not aligning with the geometric center axis of the drum. This deviation not only directly affects the welding quality between the angle steel and the drum but also leads to uneven mass distribution of the drum, affecting its operational performance. Summary of the Invention

[0006] In view of this, this application provides a welding device for processing filter press drums, which is mainly used to improve the problem of difficult positioning of angle steel on the surface of the drum, easy posture deviation, resulting in inconsistent welding quality and affecting the dynamic balance of the drum.

[0007] To solve the above-mentioned technical problems, this application provides a welding device for processing filter press drums, including a worktable, a spindle box fixedly installed on the worktable, a spindle rotatably passing through the spindle box, a chuck installed at the end of the spindle, a centering and holding mechanism slidably arranged on the worktable, longitudinal moving components at both ends of the worktable, fixed rods fixedly installed on the two longitudinal moving components, and the axis of the fixed rods and the axis of the spindle are located in the same horizontal plane. A clamping mechanism is provided on the fixed rods for clamping the angle steel to be welded; the clamping mechanism includes two mounting plates fixed on the fixed rods, and a clamping assembly is arranged between the two mounting plates. The clamping assembly includes a lower clamping base plate and a drive mounting seat fixed between the two mounting plates; a lower clamping seat is provided at the end of the lower clamping base plate; an automatic telescopic cylinder is installed on the drive mounting seat, and an upper clamping seat is hinged to the moving end of the automatic telescopic cylinder, and a guide rod that slides through the drive mounting seat is fixed on the upper clamping seat.

[0008] By adopting the above technical solution, the operator places one end of the roller in the chuck and clamps it, and drives the centering and holding mechanism to move to press against the other end of the roller, keeping the center line of the roller coincident with the axis of the main shaft, thus achieving centering and stable support of the roller. Subsequently, a single angle steel is placed between the open upper and lower clamping seats, and the automatic telescopic cylinder drives the upper clamping seat to move, working together with the lower clamping seat to clamp the angle steel in a predetermined posture. Then, the two longitudinal moving components synchronously drive the fixing rod and the clamping mechanism to move towards the roller, so that the end of the angle steel fits against the outer surface of the roller. Since the axis of the fixing rod and the axis of the main shaft are located on the same horizontal plane, the center extension line of the angle steel wing plate always points to the center axis of the roller during the movement, ensuring that when the angle steel contacts the roller, its wing plate can fit evenly against the outer surface of the roller, eliminating local gaps caused by angular deviations, providing a stable positioning basis for subsequent welding, and improving welding quality.

[0009] Optionally, multiple clamping mechanisms are provided, and the multiple clamping mechanisms are arranged along the axial direction of the fixed rod.

[0010] Optionally, the clamping assembly is further provided with a clearance component for driving the clamping mechanism to move out of the welding area during the welding process; the clearance component includes a guide post 1 disposed on the lower clamping base plate, and the lower clamping seat is slidably sleeved on the guide post 1; a rotational power source 2 is fixedly installed on the lower clamping base plate, and the driving gear on the output shaft of the rotational power source 2 meshes with the driven gear fixed on the fixed rod; transmission units are respectively provided on both sides of the upper clamping seat for driving the lower clamping seat to slide along the guide post 1.

[0011] Optionally, the transmission unit includes a rack mounting base fixed on the upper clamping seat, a guide post two is provided between the rack mounting base and the upper clamping seat, and a floating rack is slidably mounted on the guide post two; a fixed rack is fixed on the lower clamping seat; a gear shaft is fixed on the inner side of the mounting plate, and a reversing gear is rotatably mounted on the gear shaft, which meshes with both the floating rack and the fixed rack.

[0012] By adopting the above technical solution, when the welding reaches the corresponding position of a certain clamping mechanism, the automatic telescopic cylinder of the clamping mechanism retracts, and the lower clamping seat is driven to slide along the guide column through the gear and rack mechanism in the transmission unit, so that the upper clamping seat extends and releases the clamping of the angle steel; then, the rotational power source drives the entire clamping mechanism to rotate around the fixed rod, so that it moves away from the welding area; after the welding mechanism passes this position, the clamping mechanism rotates and resets, the automatic telescopic cylinder extends, and re-clamps the angle steel, thus realizing the avoidance and reset of the clamping mechanism during the welding process.

[0013] Optionally, the clamping mechanism may further include another clamping assembly, and the two clamping assemblies are arranged in an array along the circumferential direction of the fixed rod.

[0014] By adopting the above technical solution, while the operator is welding angle steel on one clamping component, the next angle steel to be welded is pre-clamped on another clamping component; after the current angle steel is welded and the welding operation on this side is completed, the clamping mechanism is driven to rotate around the fixed rod, quickly switching the clamped angle steel to the welding station and immediately starting the next round of welding, thus realizing the parallel operation of the welding process and the clamping process.

[0015] Optionally, the clamping assembly further includes a movable unit, which includes an upper floating clamping block vertically slidably mounted on the upper clamping seat and a lower floating clamping block vertically slidably mounted on the lower clamping seat via a guide post. A compression spring is provided between the upper floating clamping block and the upper clamping seat, and a compression spring is provided between the lower floating clamping block and the lower clamping seat, which is sleeved on the guide post. The horizontal plate of the upper floating clamping block is provided with an inclined surface for guiding the angle steel into the jaw. The upper floating clamping block and the lower floating clamping block together constitute a movable jaw for clamping the angle steel. The two sides of the lower clamping seat are respectively provided with a centering unit for driving the entire movable jaw to make adaptive fine adjustments in the vertical direction.

[0016] Optionally, the active unit also includes a centering unit, which includes a vertical guide rail fixed to the mounting plate, on which an upper slider and a lower slider are slidably mounted; an upper limit block is fixed on the upper floating clamp, and an upper adjusting member is slidably passed between the upper limit block and the upper slider, with an upper contact post fixed to one end of the upper adjusting member and an upper limit platform on it; a compression spring three is sleeved on the upper adjusting member; a lower limit block is fixed on the lower floating clamp, and a lower adjusting member is slidably passed between the lower limit block and the lower slider, with a lower contact post fixed to one end of the lower adjusting member and a lower limit platform on it; a compression spring four is sleeved on the lower adjusting member; floating blocks are slidably mounted on the upper limit platform and the lower limit platform.

[0017] By adopting the above technical solution, the upper and lower floating clamps adaptively clamp angle steels of different thicknesses under the action of compression spring one and compression spring two. During the process of the longitudinal movement component driving the clamping mechanism to feed towards the drum, if the center line of the angle steel wing plate is too high, the lower contact column will first contact the outer surface of the drum and drive the lower adjusting component and the lower slider to move upward along the vertical guide rail, squeezing the compression spring four. At the same time, the upper adjusting component and the upper slider will move upward synchronously through the floating block. If the center line is too low, the upper contact column will first contact and drive the upper component to move downward, squeezing the compression spring three. The lower component will move downward synchronously through the floating block, thereby driving the entire movable jaw and angle steel to make adaptive fine adjustments in the vertical direction until the center extension line of the angle steel wing plate points to the center axis of the drum, ensuring a tight fit between the angle steel and the drum surface.

[0018] Optionally, the centering and holding mechanism includes a transverse slide rail fixed to the worktable, a centering base slidably mounted on the transverse slide rail, and a centering pressure head fixedly mounted on the side of the centering base facing the chuck; a screw with its axis parallel to the transverse slide rail is rotatably mounted on the worktable, a nut mounting seat that forms a threaded engagement with the screw is fixedly mounted on the lower part of the centering base, and a tailstock handwheel is fixedly mounted on the end of the screw.

[0019] By adopting the above technical solution, the operator rotates the tailstock handwheel to drive the screw to rotate, and the nut mounting seat drives the centering base to slide along the transverse slide rail toward the drum until the centering pressure head presses against the center of the drum end. The self-locking property of the screw and nut continuously provides stable centering support during the welding process, suppressing axial movement and radial vibration when the drum rotates.

[0020] Optionally, the longitudinal movement assembly includes a longitudinal movement slide rail fixed to the worktable, and a longitudinal movement slide block slidably mounted on the longitudinal movement slide rail and fixedly connected to the end of the fixed rod; a linear drive element for driving the longitudinal movement slide block is provided on the worktable.

[0021] Optionally, the linear drive element includes a first lead screw rotatably mounted on the worktable, a rotational power source at the end of the first lead screw, and a lead screw nut mounting seat that is threadedly engaged with the first lead screw fixed at the bottom of the longitudinal slide.

[0022] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0023] 1. This application achieves horizontal feeding of the angle steel by setting a fixed rod and clamping mechanism on the same plane as the roller axis, in conjunction with the longitudinal movement component, ensuring that the center extension line of the angle steel wing plate always points to the roller axis during the feeding process, realizing the positioning of the angle steel and the outer circle surface of the roller, solving the problem of easy deviation of the angle steel posture during the traditional welding positioning process, and improving welding accuracy and consistency.

[0024] 2. This application, by setting floating clamping blocks with compression springs and centering units on the upper and lower clamping seats, can adaptively clamp angle steel of different thicknesses and automatically fine-tune the vertical position of the jaws during the feeding process, so that the center line of the angle steel wing plate is dynamically aligned with the roller axis, ensuring the welding quality of angle steel of different specifications and enhancing the versatility of the equipment.

[0025] 3. By incorporating a clearance component and a rotatable clamping mechanism, this application allows the clamping mechanism to be temporarily moved out of the welding area during the welding process, enabling the welding mechanism to complete the full welding operation in one go. This avoids the traditional process of spot welding first, then removing the tooling before full welding, thus improving welding efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a welding device for processing filter press drums according to this application; Figure 2 This is a top view schematic diagram of a welding device for processing filter press drums according to this application; Figure 3 This is a front view structural schematic diagram of a welding device for processing filter press drums according to this application; Figure 4 This is a three-dimensional structural diagram of the centering and holding mechanism and the worktable in the assembled state in this application; Figure 5 This is a front view structural diagram of the centering and holding mechanism and the worktable in the assembled state in this application; Figure 6 This is a three-dimensional structural diagram of the longitudinal movement component and the worktable in the assembled state in this application; Figure 7 This is a three-dimensional structural diagram of the clamping mechanism, centering unit, and avoidance component in the assembly state of this application; Figure 8 This is a top view of the clamping mechanism in this application. Figure 9 This is a front view schematic diagram of the clamping mechanism in this application; Figure 10 This is a three-dimensional structural diagram of the clamping mechanism in this application; Figure 11 This is a front view structural diagram of the clamping mechanism and avoidance components in the assembly state of this application; Figure 12 This is a front view structural diagram of the clamping mechanism and the centering unit in the assembly state of this application; Figure 13 This is a top view of the clamping mechanism and the alignment unit in the assembly state of this application.

[0027] Explanation of reference numerals in the attached figures: 100. Worktable; 110. Spindle box; 120. Spindle; 130. Chuck; 200. Centering and holding mechanism; 210. Transverse slide rail; 220. Centering base; 230. Centering pressure head; 240. Screw; 250. Nut mounting seat; 260. Tailstock handwheel; 300. Longitudinal traction assembly; 310. Longitudinal traction slide rail; 320. Longitudinal traction slide block; 330. Rotation power source one; 340. First lead screw; 350. Lead screw nut mounting base; 400. Fixed rod; 500. Clamping mechanism; 510. Mounting plate; 600. Clamping assembly; 610. Lower clamping base plate; 620. Lower clamping seat; 630. Drive mounting seat; 640. Automatic telescopic cylinder one; 650. Upper clamping seat; 660. Guide rod; 661. Upper floating clamping block; 662. Compression spring one; 663. Lower floating clamping block; 664. Compression spring two; 665. Guide post; 666. Centering unit; 667. Vertical guide rail; 668. Floating block; 671. Upper slider; 672. Upper limit block; 673. Upper adjusting component; 674. Upper contact post; 675. Upper limit platform; 676. Compression spring three; 681. Lower slider; 682. Lower limit block; 683. Lower adjusting component; 684. Lower contact post; 685. Lower limit platform; 686. Compression spring four; 700. Avoidance assembly; 710. Guide post one; 720. Rack mount; 730. Guide post two; 740. Floating rack; 750. Compression spring five; 751. Compression spring six; 760. Fixed rack; 770. Gear shaft; 780. Reversing gear; 790. Rotation power source two. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1-13 The technical solutions of the embodiments of this application are clearly and completely described herein. All other embodiments obtained by those skilled in the art based on the described embodiments are within the scope of protection of this application.

[0029] Reference Figure 1 , Figure 2and Figure 3 This embodiment provides a welding device for processing filter press drums, including a worktable 100, a workpiece driving mechanism, a centering and holding mechanism 200, a longitudinal moving assembly 300, a fixing rod 400, a clamping mechanism 500, and a welding mechanism (not shown in the figure). The worktable 100 serves as the core mounting base, providing stable assembly support for various functional components and mechanisms. The workpiece drive mechanism is mounted on one side of the worktable 100, used for clamping and driving the rotation of the rollers. It mainly includes a spindle box 110, a spindle 120, and a chuck 130. The spindle box 110 is fixedly mounted on the worktable 100. The spindle 120 is driven by a motor (not shown) and passes through the spindle box 110. The chuck 130 is mounted at the end of the spindle 120, used to clamp one end of the roller. The centering and holding mechanism 200 is slidably mounted on the worktable 100 and located opposite the workpiece drive mechanism. It can press against the other end of the roller during welding, ensuring that the roller's centerline coincides with the rotation centerline of the chuck 130. The longitudinal movement assembly 30... Two slidable rods 400 are provided, each slidably mounted at one end of the worktable 100. The two ends of the fixed rod 400 are fixedly connected to two longitudinal moving components 300, and the axis of the fixed rod 400 is in the same horizontal plane as the axis of the main shaft 120, thus ensuring that the center extension line of the angle steel wing plate always points towards the center axis of the roller as the longitudinal moving component 300 feeds. Four clamping mechanisms 500 are provided (the number of clamping mechanisms 500 can be adjusted according to actual needs), evenly arranged along the axis of the fixed rod 400, for clamping and positioning the angle steel to be welded. The welding mechanism is located above the worktable 100, in the area between the fixed rod 400 and the worktable 100, for performing welding operations on the contact area between the angle steel and the roller. It should be noted that the welding mechanism in this embodiment adopts conventional and mature technology in the field, and its specific structure and working principle will not be described in detail here.

[0030] During the welding process, the workpiece drive mechanism first clamps one end of the roller via the chuck 130, while the centering and holding mechanism 200 slides and presses against the other end of the roller to ensure that the center line of the roller coincides with the rotation center line of the chuck 130, thus improving the concentricity of the welding. After the roller is centered and clamped, the operator places a single angle steel on the clamping mechanism 500 and clamps it; then, the two longitudinal movement components 300 slide synchronously, driving the fixed rod 400 and the evenly arranged clamping mechanisms 500 on it to move along the direction closer to the roller until one end of the angle steel abuts against the predetermined welding position on the outer surface of the roller. Since the axis of the fixed rod 400 and the axis of the main shaft 120 are located in the same horizontal plane, the center extension line of the angle steel flange always points to the center axis of the roller during the feed process, realizing the positioning of the angle steel and avoiding welding deviation. Subsequently, the welding mechanism performs welding operations at the root position where the angle steel contacts the roller body. After a single angle steel is welded, the workpiece drive mechanism drives the drum to rotate, causing the clamping mechanism 500 to disengage from the welded angle steel. The longitudinal transfer component 300 then moves the clamping mechanism 500 back to its original position, allowing the operator to place the next angle steel to be welded. Once the drum has rotated to the next preset welding position, the longitudinal transfer component 300 again drives the clamping mechanism 500 to feed, causing the new angle steel to press against the outer surface of the drum. This welding process is repeated until all angle steels on the outer surface of the drum are welded.

[0031] Among them, reference Figure 4 and Figure 5 The centering and holding mechanism 200 includes a transverse slide rail 210, a centering base 220, a centering pressure head 230, a screw 240, a nut mounting seat 250, and a tailstock handwheel 260. There are two transverse slide rails 210, which are fixed parallel to each other on the worktable 100 and are both located at the end away from the chuck 130. The centering base 220 is slidably mounted on the two transverse slide rails 210 and can move back and forth along the length of the transverse slide rails 210. The centering pressure head 230 is fixedly mounted on the side of the centering base 220 facing the chuck 130. The screw 240 is mounted on the worktable 100 through a bearing seat, and its axis is parallel to the transverse slide rail 210. The nut mounting seat 250 is fixedly mounted on the lower part of the centering base 220, and a nut that forms a threaded engagement with the screw 240 is installed inside it. The tailstock handwheel 260 is fixedly mounted on the screw 240 and is located at the end away from the chuck 130.

[0032] The operator rotates the tailstock handwheel 260, driving the screw 240 to rotate synchronously. This rotational motion is converted into linear motion of the nut mounting base 250 through the meshing nut, thereby pushing the centering base 220 along the transverse slide rail 210. Ultimately, the centering pressure head 230 is pressed against the end of the drum, completing the centering and clamping of the drum. This device utilizes the self-locking property of the screw 240 and nut to maintain a continuously tightened state during welding, suppressing axial movement and radial vibration that may occur when the drum rotates. This provides stable centering support for the drum, ensuring its coaxiality with the chuck 130 and guaranteeing the welding quality of subsequent angle steel welding.

[0033] Among them, reference Figure 6 The longitudinal movement assembly 300 includes a longitudinal movement slide rail 310, a longitudinal movement slide block 320, and a linear drive element. There are two longitudinal movement slide rails 310, which are fixedly mounted parallel to each other on the worktable 100. The longitudinal movement slide block 320 is slidably mounted on the two longitudinal movement slide rails 310. The linear drive element is disposed on the worktable 100 and is used to drive the longitudinal movement slide block 320 to move longitudinally reciprocally. The linear drive element includes a rotational power source 330, a first lead screw 340, and a lead screw nut mounting seat 350. The first lead screw 340 is rotatably mounted on the worktable 100 via bearing seats at both ends, and its axis is parallel to the longitudinal movement slide rail 310. The rotational power source 330 is fixedly mounted at one end of the worktable 100, and its output shaft is connected to one end of the first lead screw 340 via a coupling. The lead screw nut mounting seat 350 is fixedly mounted on the bottom of the longitudinal movement slide block 320, and a lead screw nut that mates with the first lead screw 340 is installed inside it.

[0034] After the power source 330 is started, it drives the first lead screw 340 to rotate. The rotational motion is converted into linear motion of the lead screw nut mounting base 350 through the threaded connection with the lead screw nut. This, in turn, drives the longitudinal slide block 320 to move smoothly along the longitudinal slide rail 310, causing the fixed rod 400 and the clamping mechanism 500 to move forward or backward as a whole towards the drum. This device not only ensures that each angle steel can be pressed against the predetermined welding position on the outer surface of the drum with a constant posture, achieving a stable and tight fit, but also coordinates with the rotational action of the workpiece drive mechanism, making the welding and retraction / material replacement processes of the angle steel seamlessly connected. This ensures consistent welding quality while improving the overall efficiency of the welding operation.

[0035] Among them, reference Figure 7 , Figure 8 , Figure 9 and Figure 10The clamping mechanism 500 includes a mounting plate 510 and a clamping assembly 600. There are two mounting plates 510, which are arranged in parallel on the fixed rod 400. The clamping assembly 600 is fixedly installed between the two mounting plates 510. The clamping assembly 600 includes a lower clamping base plate 610, a lower clamping seat 620, a drive mounting seat 630, an automatic telescopic cylinder 640, an upper clamping seat 650, and a guide rod 660. The two ends of the lower clamping base plate 610 are fixedly installed between the two mounting plates 510 and are located on one side of the mounting plates 510; the lower clamping seat 620 has an L-shaped structure and is located at the end of the lower clamping base plate 610, and is located at the end away from the fixing rod 400; the driving mounting seat 630 is fixedly installed between the two mounting plates 510 and is located inside the lower clamping base plate 610; the fixed end of the automatic telescopic cylinder 640 is installed on the driving mounting seat 630; the upper clamping seat 650 has an L-shaped structure and its opening direction is opposite to the lower clamping seat 620 (i.e., rotated 180°), and the two cooperate to form a jaw structure for clamping angle steel; the upper clamping seat 650 is hinged to the moving end of the automatic telescopic cylinder 640; there are two guide rods 660, one end of each guide rod 660 is fixedly installed on the upper clamping seat 650, and the other end slides through the driving mounting seat 630.

[0036] The operator places a single angle steel bar between the open upper clamping seat 650 and lower clamping seat 620. Then, an automatic telescopic cylinder 640 drives the upper clamping seat 650 to move smoothly along the guide rod 660, cooperating with the lower clamping seat 620 to firmly clamp the angle steel bar within the L-shaped jaws formed by the two. During this process, the angle steel bar is forcibly constrained to a predetermined posture, ensuring that one side of the angle steel bar's flange is against the outer surface of the drum, while the other side's flange remains perpendicular to the drum surface. Simultaneously, the center extension line of the angle steel bar's flange points towards the axial center of the drum, thus completing the positioning of the angle steel bar before welding. This device achieves rapid clamping and positioning of the angle steel bar, eliminating the deviation problems easily caused by manual positioning, ensuring the consistency of the welding posture of each angle steel bar, and laying the foundation for obtaining high-quality welding results.

[0037] Specifically, refer to Figure 12 and Figure 13The clamping assembly 600 also includes a movable unit for adaptive adjustment of the clamping gap when clamping angle steel of different thicknesses. The movable unit includes an upper floating clamping block 661, a compression spring 662, a lower floating clamping block 663, a compression spring 664, a guide post 665, and a centering unit 666. Both the upper floating clamping block 661 and the lower floating clamping block 663 are L-shaped structures, and their arrangement is the same as that of the upper clamping seat 650. The upper clamping seat 650 has a slide rail on its vertical plate, and the upper floating clamping block 661 has a sliding groove on its vertical plate that mates with the slide rail. The upper floating clamping block 661 is vertically slidably mounted on the upper clamping seat 650 through the slide rail and sliding groove. The horizontal plate of the upper floating clamping block 661 has a guide ramp. When the automatic telescopic cylinder 640 drives the clamping assembly 600 to close, the ramp can guide the angle steel smoothly into the movable jaw. There are three compression springs 662, each with its two ends abutting between the horizontal plate of the upper floating clamping block 661 and the horizontal plate of the upper clamping seat 650, providing downward elastic pressure to the upper floating clamping block 661. Three guide posts 665 are arranged at the lower part of the horizontal plate of the lower floating clamping block 663, each guide post 665 having a limiting boss at its end. The vertical plate of the lower clamping seat 620 has guide holes corresponding to these guide posts 665, and the lower clamping seat 620 is slidably mounted on the guide posts 665 of the lower floating clamping block 663 through its guide holes. A second compression spring 664 is sleeved on the guide post 665 and located between the horizontal plate of the lower clamping seat 620 and the vertical plate of the lower floating clamping block 663, providing elastic support to the lower floating clamping block 663. The upper floating clamping block 661 and the lower floating clamping block 663 cooperate to form a movable jaw for clamping angle steel. There are two centering units 666, symmetrically arranged on both sides of the lower clamping seat 620, used to drive the entire movable jaw to make adaptive fine adjustments in the vertical direction.

[0038] The centering unit 666 includes a vertical guide rail 667, an upper slider 671, a lower slider 681, an upper limit block 672, an upper adjusting member 673, an upper contact post 674, an upper limit platform 675, a compression spring 676, a lower limit block 682, a lower adjusting member 683, a lower contact post 684, a lower limit platform 685, a compression spring 686, and a floating block 668. A vertical guide rail 667 is vertically fixed to the outside of the mounting plate 510; an upper slider 671 and a lower slider 681 are slidably mounted on the vertical guide rail 667; an upper limit block 672 is fixedly mounted on the side of the upper floating clamp 661 and located on one side of the vertical guide rail 667; an upper adjusting member 673 slides through the upper slider 671 and the upper limit block 672; an upper contact post 674 is fixedly mounted on the end of the upper adjusting member 673 near the roller, and the axis of the upper contact post 674 is parallel to the axis of the fixed rod 400; a stop block is fixed on the end of the upper adjusting member 673 away from the roller. An upper limit platform 675 is fixedly mounted on the upper adjusting member 673, and the upper limit platform 675 is located between the upper slider 671 and the upper limit block 672; a compression spring 676 is sleeved on the upper adjusting member 673 and abuts against the upper limit platform 675 and the upper slider 671. The lower limit block 682 is fixedly installed on the side of the lower floating clamp block 663; the lower adjusting member 683 is fixedly installed with a lower contact post 684 at the end near the roller, and the axis of the lower contact post 684 is parallel to the axis of the upper contact post 674; the lower adjusting member 683 is fixedly installed with a stop block at the end away from the roller; the lower adjusting member 683 is fixedly installed with a lower limit platform 685, and the lower limit platform 685 is located between the lower slider 681 and the lower limit block 682, and the distance from the lower limit platform 685 to the lower slider 681 is consistent with the distance from the upper limit platform 675 to the upper slider 671; the compression spring 686 is sleeved under the lower adjusting member 683, and the compression spring 686 abuts against the lower limit platform 685 and the lower slider 681. The floating block 668 has a slot, through which it slides simultaneously onto the upper limit platform 675 and the lower limit platform 685, realizing the linkage connection between the upper and lower adjustment components.

[0039] When welding rollers of different specifications, the thickness of the angle steel needs to be adjusted accordingly, and the actual center extension line position of the angle steel flange will also change with the thickness. In the prior art, it is usually necessary to change a special fixture or manually adjust repeatedly to adapt to angle steel of different thicknesses. This process is cumbersome, inefficient, and makes it difficult to guarantee repeatability. If a simple rigid jaw is used to clamp angle steel of different thicknesses, after the longitudinal movement component 300 is fed horizontally, the center extension line of the angle steel flange will not point to the central axis of the roller, which will easily cause poor fit between the angle steel and the roller and affect the welding quality. Therefore, in this embodiment, the upper floating clamp 661 and the lower floating clamp 663 are adaptively floating under the action of compression spring 662 and compression spring 664, respectively, to achieve initial clamping of angle steel of different thicknesses. At the same time, the upper limit block 672 will drive the upper adjusting component 673 to move, and the lower limit block 682 will also drive the lower adjusting component 683 to move accordingly.

[0040] During the process of the longitudinal movement component 300 driving the clamping mechanism 500 to feed towards the drum, if the center extension line of the angle steel wing plate is not aligned with the central axis of the drum, or is too high or too low, the adjusting cylinder on the offset side will contact the outer surface of the drum first (when the center line of the angle steel wing plate is too high, the lower contact column 684 will contact first; when the center line of the angle steel wing plate is too low, the upper contact column 674 will contact first). As the feed continues, the adjusting cylinder that contacts first slides vertically along the vertical guide rail 667 under the guidance of the arc surface of the outer surface of the drum, and compresses the corresponding compression spring three 676 or compression spring four 686; under the linkage constraint of the floating block 668, the upper contact column 674 and the lower contact column 684 move vertically synchronously, driving the entire movable jaw and the clamped angle steel to self-adaptively fine-tune in the vertical direction until the center extension line of the angle steel wing plate is dynamically corrected and finally points to the axial center of the drum. This device ensures that, for angle steel of any thickness, the center extension line of its flange is automatically aligned and continuously maintained with the roller axis throughout the clamping and feeding process, guaranteeing high-quality welding in the future. Furthermore, the specific quantities of compression spring 662, compression spring 664, and guide post 665 can be adjusted according to actual production needs.

[0041] Reference Figure 7 and Figure 11A welding device for processing filter press drums also includes an avoidance component 700, which enables the clamping mechanism 500 to automatically avoid and reset during the welding process. The avoidance component 700 includes a guide post 710, a rotational power source 790, and a transmission unit. Two guide posts 710 are arranged in parallel at the end of the lower clamping base plate 610 away from the fixed rod 400. Each guide post 710 has a limit boss at its end. The horizontal plate of the lower clamping seat 620 has guide holes corresponding to these guide posts 710. The lower clamping seat 620 is slidably mounted on the guide posts 710 of the lower clamping base plate 610 through its guide holes. The second rotational power source 790 is fixedly installed on the outside of the lower clamping base plate 610. The output shaft of the second rotational power source 790 is equipped with a drive gear. The drive gear passes through the through slot opened on the lower clamping base plate 610 and meshes with the driven gear fixedly installed on the fixed rod 400. Driven by the second rotational power source 790, the clamping mechanism 500 can be driven to rotate around the fixed rod 400.

[0042] There are two transmission units, symmetrically arranged on both sides of the upper clamping seat 650, used to drive the lower clamping seat 620 to slide along the guide post 710. Each transmission unit includes a rack mounting seat 720, a guide post 730, a floating rack 740, a compression spring 750, a compression spring 751, a fixed rack 760, a gear shaft 770, and a reversing gear 780. The rack mounting seat 720 is fixedly installed on one side of the upper clamping seat 650. The two ends of the guide post 730 are respectively fixedly installed on the rack mounting seat 720 and the upper clamping seat 650. The floating rack 740 is slidably disposed on the guide post 730. The compression spring 750 is sleeved on the guide post 730 and abuts against the floating rack 740 and the rack mounting seat 720. The compression spring 751 is sleeved on the guide post 730 and abuts against the floating rack 740 and the lower clamping seat 620. The fixed rack 760 is fixedly installed on the lower clamping seat 620, and the gear shaft 770 is fixedly installed on the inner side of the mounting plate 510, on which the reversing gear 780 is rotatably installed; the reversing gear 780 meshes with both the floating rack 740 and the fixed rack 760 to realize the linkage transmission between the two.

[0043] Because the angle steel positioning and clamping mechanism can easily obstruct the working path of the welding mechanism during the welding process, traditional processes usually require spot welding for fixation before moving the positioning and clamping mechanism out for full welding. This segmented operation is not only cumbersome but also results in low welding efficiency. Therefore, in this embodiment, during the welding process, when the welding mechanism moves to the position corresponding to a clamping mechanism 500, the automatic telescopic cylinders 640 of the two clamping components 600 on the clamping mechanism 500 retract synchronously. Through their respective floating racks 740, they drive the reversing gears 780 to rotate, thereby driving the fixed rack 760 to move and causing the upper clamping seat 650 to extend. After the upper clamping seat 650 reaches its maximum stroke, the automatic telescopic cylinder 640 continues to retract, at which point the compression spring 750 is compressed until the angle steel is completely released from the clamping state. Subsequently, the rotational power source 790 is activated, driving the clamping mechanism 500 to rotate around the fixed rod 400, causing it to move away from the welding area and clearing an uninterrupted welding path for the welding mechanism. After the welding mechanism passes the clamping position, the second power source 790 is restarted, driving the clamping mechanism 500 to rotate back to the initial position. The first automatic telescopic cylinder 640 then extends, driving the reversing gear 780 to rotate via the floating rack 740, which in turn drives the fixed rack 760 to move, causing the upper clamping seat 650 to retract. Once the upper clamping seat 650 retracts to fit the angle steel, it continues to extend and compress the sixth compression spring 751 until the angle steel is re-clamped. This design achieves automatic temporary release and reset of the clamping mechanism 500 during welding, allowing the welding mechanism to complete the full welding operation between the angle steel and the roller in one go. This directly eliminates the cumbersome steps of spot welding and secondary full welding in traditional processes, improving the overall efficiency of the welding operation while ensuring welding quality.

[0044] Specifically, refer to Figure 7 The clamping mechanism 500 also includes another clamping assembly 600, which is arranged in an array with the aforementioned clamping assembly 600 along the circumferential direction of the fixed rod 400. The two clamping assemblies 600 move synchronously to reduce the equipment waiting time occupied by clamping angle steel.

[0045] The two clamping components 600 allow the operator to perform welding operations on one clamping component 600 while pre-clamping the next angle steel to be welded on the other clamping component 600. After the current angle steel is welded and the clamping mechanism 500 retracts, the clamped angle steel can be quickly switched to the welding station and the next round of welding can begin immediately by driving the clamping mechanism 500 to rotate. This enables parallel operation of welding and clamping processes, reduces equipment waiting time, and improves overall work efficiency.

[0046] In this application, the first rotary power source 330 and the second rotary power source 790 are servo motors, and the first automatic telescopic cylinder 640 is a pneumatic telescopic cylinder. Depending on actual needs, the rotary power source can also be a hydraulic motor or a stepper motor or other types of rotary power source, and the automatic telescopic cylinder can also be an electric telescopic cylinder or a hydraulic telescopic cylinder or other types of automatic telescopic cylinder.

[0047] The implementation principle of a welding device for processing filter press drums according to an embodiment of this application is as follows: First, the operator places one end of the roller in the chuck 130 and clamps it. Then, the operator rotates the tailstock handwheel 260 of the centering and holding mechanism 200 to drive the screw 240 to rotate, which in turn drives the centering base 220 to slide along the transverse slide rail 210 toward the roller until the centering pressure head 230 presses against the center of the other end of the roller.

[0048] The operator places an angle steel bar between the upper floating clamping block 661 and the lower floating clamping block 663 of the clamping assembly 600, which is in the open state. The automatic telescopic cylinder 640 is activated, driving the upper clamping seat 650 to move, clamping the angle steel bar between the upper and lower floating clamping blocks 661 and 663. During this process, compression springs 662 and 664 provide elastic pressure, allowing the upper and lower floating clamping blocks 661 and 663 to adaptively clamp angle steel bars of different thicknesses. Simultaneously, the next angle steel bar to be welded can be pre-clamped on another symmetrically arranged clamping assembly 600, achieving parallel preparation for clamping and welding.

[0049] Two rotating power sources 330 are started simultaneously, driving the first lead screw 340 to rotate, which in turn drives the longitudinal sliding block 320, the fixed rod 400, and all clamping mechanisms 500 to feed towards the drum along the longitudinal sliding rail 310. When the end of the angle steel approaches the outer surface of the drum, if the center line of its flange is not aligned with the drum axis due to the thickness of the angle steel, the centering unit 666 will start to work: the adjusting cylinder on the offset side will contact the outer surface of the drum first (when the center line of the angle steel flange is too high, the lower contact column 684 will contact first; when the center line of the angle steel flange is too low, the upper contact column 674 will contact first). As the feed continues, the adjusting cylinder that contacts first will slide vertically along the vertical guide rail 667 under the guidance of the arc surface of the outer surface of the drum, and compress the corresponding compression spring 676 or compression spring 686. Simultaneously, constrained by the floating block 668, the upper contact post 674 and the lower contact post 684 will move synchronously, causing the entire movable jaw and the clamped angle steel to adaptively fine-tune in the vertical direction until the center extension line of the angle steel wing plate is dynamically corrected and points to the center axis of the drum. Finally, the feed continues until the end of the angle steel is tightly abutting the predetermined welding position on the outer surface of the drum.

[0050] Then, the welding operation begins. The welding mechanism aligns with the joint between the angle steel and the roller and begins welding. When the welding mechanism's movement path is about to be blocked by the current clamping mechanism 500, the avoidance component 700 is activated: the automatic telescopic cylinders 640 of the two clamping components 600 on the clamping mechanism 500 retract synchronously. Through the transmission of the floating rack 740, the reversing gear 780, and the fixed rack 760, the upper clamping seat 650 first extends, and then the compression spring 750 is squeezed, causing the angle steel to completely disengage from the clamping of the upper floating clamping block 661 and the lower floating clamping block 663. Next, the rotation power source 790 is activated, driving the clamping mechanism 500 to rotate around the fixed rod 400, moving it away from the welding area and providing an unobstructed passage for the welding mechanism, thus allowing the full welding operation of the angle steel at that location to be completed in one go. After the welding mechanism passes this position, the second power source 790 drives the clamping mechanism 500 to rotate back, and the first automatic telescopic cylinder 640 extends, re-clamping the angle steel through the upper floating clamping block 661 and the lower floating clamping block 663.

[0051] After the welding of a single angle steel is completed, the clamping assembly 600 releases its grip on the welded angle steel. The spindle 120 drives the chuck 130 and the roller to rotate at a predetermined angle, causing the clamping mechanism 500 to disengage from the welded angle steel. Subsequently, the longitudinal movement assembly 300 drives the clamping mechanism 500 to retract and reset, while the workpiece drive mechanism drives the roller to rotate to the next welding position. Then, the second power source 790 drives the clamping mechanism 500 to rotate 180 degrees, and the longitudinal movement assembly 300 drives the clamping mechanism 500 to feed along the roller direction, quickly switching the clamping assembly 600 with the clamped angle steel to the welding station.

[0052] Repeat the above feeding, alignment, welding, and avoidance process to complete the welding of the subsequent angle steel. Repeat this cycle until all angle steel around the outer circumference of the drum is welded.

[0053] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A welding device for filter press roller processing, comprising a workbench (100), a main shaft box (110) is fixedly installed on the workbench (100), a main shaft (120) is rotatably arranged on the main shaft box (110), and a chuck (130) is installed at an end of the main shaft (120), characterized in that: The workbench (100) is slidably provided with a centering and pressing mechanism (200), both ends of the workbench (100) are provided with longitudinal displacement assemblies (300), the two longitudinal displacement assemblies (300) are fixedly provided with fixed rods (400), the axis of the fixed rod (400) and the axis of the main shaft (120) are located in the same horizontal plane, the fixed rod (400) is provided with a clamping mechanism (500) for clamping the angle steel to be welded; The clamping mechanism (500) comprises two mounting plates (510) fixed to the fixed rod (400), a clamping assembly (600) is arranged between the two mounting plates (510), the clamping assembly (600) comprises a lower clamping base plate (610) and a driving mounting seat (630) fixed between the two mounting plates (510); the end of the lower clamping base plate (610) is provided with a lower clamping seat (620); the driving mounting seat (630) is provided with an automatic telescopic cylinder (640), the moving end of the automatic telescopic cylinder (640) is hingedly provided with an upper clamping seat (650), and the upper clamping seat (650) is fixedly provided with a guide rod (660) sliding through the driving mounting seat (630).

2. A filter press roller machining welding apparatus according to claim 1, characterized in that: The clamping mechanism (500) is provided with a plurality of clamping mechanisms (500) arranged along the axis direction of the fixed rod (400).

3. A filter press diaphragm welding apparatus as claimed in claim 2, wherein: The clamping assembly (600) is further provided with an avoiding assembly (700) for driving the clamping mechanism (500) to move out of the welding area during welding; the avoiding assembly (700) comprises a guide column (710) arranged on the lower clamping base plate (610), and the lower clamping seat (620) is slidably arranged on the guide column (710); the lower clamping base plate (610) is fixedly provided with a rotating power source (790), a driving gear on the output shaft of the rotating power source (790) is engaged with a driven gear fixed to the fixed rod (400); the two sides of the upper clamping seat (650) are respectively provided with transmission units for driving the lower clamping seat (620) to slide along the guide column (710).

4. A filter press diaphragm welding apparatus as claimed in claim 3, wherein: The transmission unit comprises a rack mounting seat (720) fixed to the upper clamping seat (650), a guide column (730) is arranged between the rack mounting seat (720) and the upper clamping seat (650), a floating rack (740) is slidably arranged on the guide column (730); the lower clamping seat (620) is fixedly provided with a fixed rack (760); the inner side of the mounting plate (510) is fixedly provided with a gear shaft (770), a reversing gear (780) is rotatably arranged on the gear shaft (770), and the reversing gear (780) is engaged with the floating rack (740) and the fixed rack (760) at the same time.

5. A filter press diaphragm welding apparatus according to claim 4, wherein: The clamping mechanism (500) further comprises another clamping assembly (600), and the two clamping assemblies (600) are arranged in an array along the circumferential direction of the fixed rod (400).

6. A filter press diaphragm welding apparatus as claimed in claim 3, wherein: The clamping assembly (600) further comprises a movable unit, the movable unit comprises an upper floating clamp block (661) vertically slidingly installed on the upper clamping seat (650) and a lower floating clamp block (663) vertically slidingly installed on the lower clamping seat (620) through a guide column (665), a compression spring I (662) is arranged between the upper floating clamp block (661) and the upper clamping seat (650), and a compression spring II (664) sleeved on the guide column (665) is arranged between the lower floating clamp block (663) and the lower clamping seat (620); an inclined surface for guiding the angle steel to enter is arranged on the transverse plate of the upper floating clamp block (661); the upper floating clamp block (661) and the lower floating clamp block (663) jointly constitute a movable jaw for clamping the angle steel, and a centering unit (666) is arranged on each side of the lower clamping seat (620) and used for driving the whole movable jaw to be self-adaptively fine-adjusted in the vertical direction.

7. A filter press diaphragm welding apparatus as claimed in claim 6, wherein: The movable unit further comprises the centering unit (666), the centering unit (666) comprises a vertical guide rail (667) vertically fixed on the mounting plate (510), and an upper sliding block (671) and a lower sliding block (681) are slidingly installed on the vertical guide rail (667); an upper limiting block (672) is fixed on the upper floating clamp block (661), an upper adjusting piece (673) is slidingly arranged between the upper limiting block (672) and the upper sliding block (671), one end of the upper adjusting piece (673) is fixed with an upper contact column (674), and an upper limiting table (675) is arranged on the upper adjusting piece (673); a compression spring III (676) is sleeved on the upper adjusting piece (673); a lower limiting block (682) is fixed on the lower floating clamp block (663), a lower adjusting piece (683) is slidingly arranged between the lower limiting block (682) and the lower sliding block (681), one end of the lower adjusting piece (683) is fixed with a lower contact column (684), and a lower limiting table (685) is arranged on the lower adjusting piece (683); a compression spring IV (686) is sleeved on the lower adjusting piece (683); the upper limiting table (675) and the lower limiting table (685) are slidingly provided with a floating block (668).

8. A filter press roller machining welding apparatus according to claim 1, characterized in that: The centering and pressing mechanism (200) comprises a transverse sliding rail (210) fixed on the workbench (100), a centering base (220) slidingly installed on the transverse sliding rail (210), and a centering pressing head (230) fixedly installed on one side of the centering base (220) and facing the chuck (130); the workbench (100) is rotationally installed with a screw rod (240) with an axis parallel to the transverse sliding rail (210), the lower part of the centering base (220) is fixedly installed with a nut mounting seat (250) in threaded cooperation with the screw rod (240), and the end of the screw rod (240) is fixedly installed with a tailstock handwheel (260).

9. A filter press roller machining welding apparatus according to claim 1, characterized in that: The longitudinal moving assembly (300) comprises a longitudinal sliding rail (310) fixed on the workbench (100), and a longitudinal sliding seat (320) fixedly connected with the end of the fixed rod (400) and slidingly installed on the longitudinal sliding rail (310); the workbench (100) is provided with a linear driving element for driving the longitudinal sliding seat (320).

10. A filter press diaphragm welding apparatus according to claim 9, wherein: The straight line driving element comprises a first screw rod (340) rotatably installed on the workbench (100), a rotating power source I (330) is arranged at the end of the first screw rod (340), and the bottom of the longitudinal moving sliding seat (320) is fixed with a screw rod nut mounting seat (350) which is threadedly matched with the first screw rod (340).

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