Auxiliary clamping and fixing device for cutting machining of metal welding machine

Abstract

The invention discloses an auxiliary clamping and fixing device for cutting machining of a metal welding machine, and relates to the technical field of metal auxiliary clamping and fixing.The auxiliary clamping and fixing device comprises a cutting table, a mounting frame is fixedly connected to the upper end face of the cutting table, an air cylinder is fixedly connected to the center of the upper end face of the mounting frame, and a pressing plate is fixedly connected to the output end of the air cylinder; a clamping force control mechanism is arranged on the upper end face of the cutting table, dirt, grease, oxide and other impurities on the surface of a metal workpiece can be thoroughly removed, a clean and impurity-free surface is provided for follow-up cutting operation, defects such as burrs and cracks caused by the impurities in the cutting process are reduced, and therefore the cutting quality is improved; and moreover, the metal surface subjected to sand blasting treatment is cleaner and tidier, the cleaning and preparation time in the subsequent machining process is shortened, and meanwhile, due to improvement of the cutting quality, subsequent machining (such as welding and polishing) can be smoother and more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of metal auxiliary clamping and fixing, in particular to an auxiliary clamping and fixing device used for cutting processing of a metal welding machine. Background Art

[0002] Metal welding machine cutting is an important technology in the field of metal processing. It combines welding and cutting processes and is widely used in the processing and manufacturing of various metal materials. Auxiliary clamping devices play a vital role in the metal cutting process. They can ensure the stability and accuracy of the workpiece during the cutting process.

[0003] In the field of metal processing, auxiliary clamping devices are key equipment to ensure processing accuracy and workpiece stability. Their performance is directly related to the quality of the final product. However, the currently widely used auxiliary clamping devices still have significant deficiencies in practical applications, which are mainly reflected in the following aspects:

[0004] First, in the process of fixing the metal workpiece by the auxiliary clamping device, especially before the cutting operation on the metal workpiece, there are often dirt, grease, oxides and other impurities on the surface of the metal workpiece, which have a significant adverse effect on the cutting quality and subsequent processing. In the traditional metal workpiece processing process, the cleaning of the workpiece surface often relies on manual cleaning or simple mechanical decontamination methods. These methods are difficult to completely remove the dirt, grease and oxides on the workpiece surface, resulting in impurities on the cutting surface, and then burrs, cracks and other defects are generated during the cutting process, affecting the cutting quality. Due to the presence of impurities or unevenness on the cutting surface, subsequent processing procedures (such as welding, grinding, painting, etc.) require more time and resources for cleaning, finishing and preparation, which not only increases the processing cost, but also leads to unstable processing quality of metal workpieces.

[0005] Secondly, the operation of traditional clamping devices is highly dependent on the experience and judgment of the staff, especially when facing metal workpieces of different materials. Since different metals have different sensitivities and reactions to clamping force, it is often difficult for the staff to accurately control the clamping force based on experience alone. When the clamping force is too large, the metal workpiece is very likely to be partially or even completely deformed at the clamping position. This deformation will directly cause the preset cutting start and end positions to shift, and then cause the cutting trajectory to deviate from the designed path, seriously affecting the accuracy of the cutting path and the flatness of the cutting surface, and ultimately reducing the cutting accuracy. On the contrary, if the clamping force is too small, the workpiece cannot be effectively fixed, and the workpiece is prone to shaking or moving during the cutting process, resulting in defects such as uneven cutting surfaces, ripples or bumps, which seriously damages the quality of metal cutting.

[0006] Finally, when further pressing and fixing the metal surface, the traditional clamping device faces the challenge of the irregular shape of the metal surface. Since the surface of the metal workpiece often has complex geometric shapes and uneven areas (such as the surface of a rectangular and cylindrical body), it is difficult for the clamping device to achieve uniform pressure on the entire workpiece surface. This uneven pressing will not only cause the workpiece to tilt or shift during the clamping process, greatly reducing the stability of the clamping, thereby affecting the subsequent processing accuracy. At the same time, the uneven pressure distribution will also leave indentations or cause wear on the workpiece surface, adversely affecting the appearance of the workpiece, and adding unnecessary difficulty and cost to subsequent processing (such as welding, painting, etc.).

[0007] Therefore, the present invention proposes an auxiliary clamping and fixing device for cutting processing of a metal welding machine to solve the above problems. Summary of the invention

[0008] 1. Technical issues to be solved

[0009] In view of the deficiencies of the prior art, the present invention provides an auxiliary clamping and fixing device for cutting processing of a metal welding machine, which can effectively solve the problem in the prior art that the workers are unable to control the clamping force of the metal according to the different metals.

[0010] (II) Technical solution

[0011] To achieve the above object, the object of the present invention can be achieved by the following technical solutions:

[0012] An auxiliary clamping and fixing device for cutting processing of a metal welding machine comprises a cutting table, the upper end surface of the cutting table is fixedly connected to a mounting frame, a cylinder is fixedly connected to the center of the upper end surface of the mounting frame, a pressing plate is fixedly connected to the output end of the cylinder, a clamping force control mechanism is arranged on the upper end surface of the cutting table, the clamping force control mechanism is used to control the clamping force of the metal workpiece, a pressing shape adjustment mechanism is arranged on the pressing plate, the pressing shape adjustment mechanism is used to adjust the pressing plate according to the shape of the surface of the metal workpiece, and an auxiliary sandblasting mechanism is arranged on the side wall of the mounting frame.

[0013] As a further solution of the present invention: the auxiliary sandblasting mechanism includes a support plate, the support plate is fixedly connected to the side wall of the mounting frame, the upper end surface of the support plate is fixedly connected to a sandblasting box, the sandblasting box and the cylinder are electrically connected, the output end of the sandblasting box is fixedly connected to a universal joint, the end of the universal joint away from the sandblasting box is fixedly connected to a sandblasting tube, the sandblasting tube and the sandblasting box are connected, and the lower end of the sandblasting tube is fixedly connected to a sandblasting head.

[0014] As a further solution of the present invention: a linkage rod is symmetrically fixedly connected to the outer surface of the sandblasting tube, and a corrugated plate is attached to the side of the linkage rod away from the sandblasting tube, and the peaks on the side walls of the corrugated plates on both sides are alternately distributed, and an auxiliary plate is fixedly connected to the side of the corrugated plate away from the linkage rod, and the auxiliary plates are slidably connected to the lower end surface of the support plate, and a connecting rod is rotatably connected to the opposite side of the auxiliary plate, and a base plate is rotatably connected between the ends of the connecting rod away from the auxiliary plate, and the base plate is fixedly connected to the upper end surface of the pressing plate.

[0015] As a further solution of the present invention: the clamping force control mechanism includes symmetrically arranged sliding columns, each of which is slidably connected to the mounting frame, each of the sliding columns is fixedly connected to a movable plate at one opposite end, each of the movable plates is symmetrically slidably connected to a connecting column, each of the connecting columns is fixedly connected to a clamping plate, each of the connecting columns is symmetrically fixedly connected to a first spring between the clamping plate and the movable plate, and each of the first springs is sleeved on the outer surface of the connecting column.

[0016] As a further solution of the present invention: the movable plate is symmetrically fixedly connected with the mounting plate on one side away from the clamping plate, the upper end surfaces of the mounting plates are provided with sliding grooves, the ends of the sliding columns away from the clamping plate are penetrated and slidably connected to the mounting plate, the sliding columns are fixedly connected with the movable blocks on the side close to the mounting plate, the movable blocks are slidably connected in the sliding grooves, the sliding grooves are slidably connected with limit blocks, and connecting plates are fixedly connected between the upper end surfaces of the limit blocks on the same side.

[0017] As a further solution of the present invention: a clamping column is slidably connected through the center of the connecting plate, a handle is fixedly connected to the upper end of the clamping column, the clamping column is located directly above the sliding column, and clamping holes are equidistantly opened above the outer surface of the sliding column, and the clamping column and the clamping hole are clamped together.

[0018] As a further solution of the present invention: the sliding column is fixedly connected to a sliding plate at one end away from the moving plate, the sliding plates are slidably connected to the lower end surface of the cutting table, the lower end surfaces of the sliding plates are rotatably connected to a linkage plate, the linkage plates are rotatably connected to a fixed plate between the ends away from the sliding plates, a driving shaft is fixedly connected through the center of the fixed plate, the driving shaft is rotatably connected to the upper end surface of the cutting table, and a driving motor is fixedly connected to the driving shaft.

[0019] As a further solution of the present invention: the limit block is fixedly connected to a power switch on one side close to the moving block, the power switch is electrically connected to the drive motor, and the power switch is electrically connected to a warning light, and the warning light is fixedly connected to the side wall of the mounting plate.

[0020] As a further solution of the present invention: the pressing shape adjustment mechanism includes symmetrically arranged side plates, the side plates are respectively located on both sides of the pressing plate, the side plates close to the pressing plate are penetrated and fixedly connected with a rotating shaft, the rotating shafts are penetrated and rotatably connected to the side walls of the pressing plate, one end of the rotating shaft is fixedly connected with a lever, the lever is fixedly connected with a cylinder close to the pressing plate, a lifting plate is arranged between the cylinders, the lifting plate is vertically slidably connected to the side walls of the pressing plate, grooves are opened on both sides of the lifting plate, and the cylinders are slidably connected in the grooves.

[0021] As a further scheme of the present invention, the upper surface of the lifting plate is fixedly connected with a lifting column, the lifting column is penetrated and slidably connected to the pressing plate, and the upper end of the lifting column is fixedly connected with a cross plate, and the upper end surface of the cross plate is symmetrically provided with a moving groove, and the moving groove passes through a sliding connection with a limiting column. Vertical plates are arranged on both sides of the cross plate, and the vertical plate is fixedly connected to the upper surface of the pressing plate, and a vertical groove is formed on the side of the vertical plate close to the cross plate, and the cross plate is slidably connected to the vertical groove, and the side of the vertical plate away from the vertical groove is equidistantly provided with limiting holes, and the limiting holes are communicated with the vertical grooves, and the limiting holes are clamped with the limiting columns. The limiting column is fixedly connected with a dial plate at one end away from the limiting hole, and the dial plate is slidably connected in the moving groove, and the dial plate is fixedly connected to the second spring at one end away from the limiting column, and the second spring is fixedly connected to the inner wall of the moving groove at one end away from the dial plate

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides an auxiliary clamping and fixing device for cutting processing of a metal welding machine, which has the following beneficial effects:

[0024] 1. Through the auxiliary sandblasting mechanism, the surface of the metal workpiece with cutting can be sandblasted while the metal workpiece is being pressed and limited. This can not only completely remove dirt, grease, oxides and other impurities on the surface of the metal workpiece, but also provide a clean and impurity-free surface for subsequent cutting operations, reduce defects caused by impurities during the cutting process, such as burrs and cracks, thereby improving the cutting quality. Moreover, the metal surface after sandblasting is cleaner and tidier, reducing the cleaning and preparation time in the subsequent processing process. At the same time, due to the improvement of cutting quality, subsequent processing (such as welding, grinding, etc.) will also be smoother and more efficient;

[0025] The cylinder not only drives the pressing plate to descend, but also starts the sandblasting box synchronously through electrical connection, thus realizing the automation of sandblasting operation. This synchronization ensures the close coordination between the sandblasting process and the clamping and pressing of the metal workpiece, thus improving production efficiency and operation continuity.

[0026] Moreover, the descent of the pressing plate is driven by the connecting rod, which changes the inclination angle of the connecting rod, thereby pulling the auxiliary plate to move in the horizontal direction. This mutually linked mechanical transmission structure can convert the vertical movement of the pressing plate into the horizontal movement of the auxiliary plate, which not only provides power for the subsequent swing of the sandblasting tube, but also eliminates the need for an additional driving power source, thereby reducing unnecessary energy loss. In addition, the pressing plate can automatically sandblast the surface of the metal workpiece to be cut while the pressing plate is pressing the metal workpiece, and the pressing and sandblasting of the metal workpiece are completed at the same time, so that the production line can operate continuously, reducing the conversion time between processes, and expanding the spraying range of the sandblasting tube, thereby ensuring the uniformity and consistency of the sandblasting effect on the surface of the metal workpiece, thereby providing a good foundation for the subsequent cutting of the metal workpiece.

[0027] In addition, the design of the corrugated plate enables the crests on its side walls to guide the linkage rod to slide along a specific path. When the corrugated plates on both sides move synchronously, the linkage rod will achieve left-right reciprocating motion due to the alternating distribution of the crests. This design is simple and efficient, and can convert the horizontal movement of the corrugated plate into the swing of the linkage rod.

[0028] Finally, the linkage rod is connected to the sandblasting tube through a universal joint, so that the sandblasting tube can swing freely at the bottom of the sandblasting box, making the sandblasting tube more flexible, thereby ensuring that the sandblasting head can cover every corner of the metal workpiece cutting to achieve uniform spraying. At the same time, due to the reciprocating swing of the sandblasting tube, the sandblasting head can evenly spray the sandblasting material on the surface of the metal workpiece cutting, thereby improving the quality of the sandblasting process.

[0029] 2. The clamping force control mechanism can adjust the contraction length of the first spring according to different metal workpieces, and apply clamping force to the metal workpiece through the rebound force of the first spring to control the clamping force. This can not only avoid the problem of partial or overall deformation of the metal workpiece at the clamping position due to improper clamping force caused by insufficient experience or misjudgment of the staff, but also ensure the accuracy of the preset cutting starting point and end point positions, so that the cutting trajectory strictly follows the designed path, improves the accuracy of the cutting path and the flatness of the cutting surface, and effectively prevents the workpiece from shaking or moving during the cutting process, avoids defects such as uneven cutting surface, ripples or bumps, and significantly improves the overall quality of metal cutting. Mechanical transmission and spring force are used as the clamping power source. Compared with other complex transmission methods (such as hydraulic and pneumatic), it has higher reliability and durability. At the same time, the simplicity of the mechanical structure also reduces the probability of failure and maintenance costs.

[0030] Secondly, by adjusting the cooperation between the clamping column and the clamping hole on the sliding column on both sides, the distance between the two limit blocks can be flexibly adjusted to adapt to metal workpieces of different sizes and shapes. This design enables the clamping structure to be widely used in a variety of processing scenarios, improving the versatility and flexibility of the equipment;

[0031] Moreover, when in use, the staff only needs to pull the handle to quickly adjust the position of the limit block, and lock it by automatically sliding the clamping column into the clamping hole. This instant adjustment and locking design greatly simplifies the operation process, improves work efficiency, and reduces the errors that may be caused by frequent adjustments. The coordination between the clamping column and the clamping hole and the sliding design of the limit block in the groove can also ensure the stability of the clamping structure during the processing. Once the clamping column is locked, the limit block will be firmly fixed in the specified position, providing reliable support and positioning for the cutting of metal workpieces. Moreover, the design adjusts the clamping width by sliding and locking, without the need for additional complex mechanisms or occupying a large amount of space. This compact structural design is not only conducive to the overall layout of the equipment, but also convenient for maintenance.

[0032] In addition, through stable clamping and reliable locking mechanism, the risk of workpiece moving or slipping during processing is effectively reduced, thus ensuring the safety of workers.

[0033] 3. By electrically connecting the power switch and the drive motor connected to the drive shaft, the drive motor can be automatically turned off and the movement of the clamping plate can be stopped after the first spring has sufficient clamping force on the metal workpiece, thereby ensuring that once the clamping force reaches a preset threshold, the drive motor will stop working immediately, preventing excessive deformation or damage of the metal workpiece caused by excessive clamping force, and improving the safety of operation;

[0034] Among them, when the moving block moves to contact with the limit block, it will trigger the power switch to turn off the driving power and stop the rotation of the driving shaft. This design not only prevents damage to the mechanical structure due to excessive rotation, but also ensures the safety of the staff and avoids accidents caused by mechanical loss of control. The entire clamping device has a compact structure design, and the connection and transmission relationship between the components are clear. This design not only reduces the size and weight of the equipment, but also facilitates the installation, debugging and maintenance of the clamping device by the staff.

[0035] 4. The power switch and the indicator light are electrically connected. When the power switch is pressed to turn off the drive motor, the staff can visually judge whether the clamped metal workpiece is in a horizontal state by observing whether the indicator lights around the metal workpiece are lit at the same time. There is no need to perform complicated measurements or adjustments, which reduces the processing errors caused by the tilt or offset of the workpiece and improves the accuracy of the metal in the subsequent cutting process.

[0036] Among them, through the visual feedback of the prompt light, it is possible to intuitively determine whether the clamped metal workpiece is in a horizontal state, which simplifies the workpiece horizontality detection process. This feedback method enables the operator to quickly and accurately understand the working status of the equipment, so as to take corresponding measures in time. This direct visual feedback is faster and more accurate than the traditional method that relies on experience or measuring tools.

[0037] 5. The pressing shape adjustment mechanism can adjust the downward inclination angle of the side plates connected by the pressing plate on both sides according to the shape of the surface of the metal workpiece, which can not only ensure that the pressing plate fits the surface of the workpiece better and achieves uniform pressure on the entire workpiece surface, but also effectively prevents the metal workpiece from tilting or shifting during the clamping process, thereby improving the stability of the clamping. In addition, whether it is a rectangular, cylindrical or other complex-shaped metal workpiece, the device can adapt to its surface shape by adjusting the angle of the side plate to ensure the firmness of the clamping, and combines multiple functions such as clamping, pressing and angle adjustment in one. Through the linkage of different components, multi-dimensional processing preparation for metal workpieces is realized. This design improves the flexibility of the equipment, enabling it to adapt to the processing needs of workpieces of different shapes and sizes;

[0038] Among them, the staff can realize the lifting and lowering of the pressing plate and the angle adjustment of the side plate through simple operations (such as pulling the dial plate, lifting the dial plate, etc.). This design simplifies the operation process and improves work efficiency. At the same time, the close cooperation between the various components makes the whole operation process smooth and unobstructed, and the coordinated use of the dial plate, limit column, limit hole and other components realizes the precise control of the rising height of the pressing plate. This design ensures that the pressing plate can be adjusted according to the predetermined height and angle, thereby meeting the requirements of processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0042] Figure 3 This is a schematic diagram of the cutting table structure when viewed from above;

[0043] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0044] Figure 5 It is a schematic diagram of the connection structure of the clamping force control mechanism of the present invention;

[0045] Figure 6 This is a schematic diagram of the connection structure of the connection plate and the mounting plate of the present invention;

[0046] Figure 7 This is a schematic diagram of the connection structure between the sliding column and the connecting plate of the present invention;

[0047] Figure 8 It is a schematic diagram of the connection structure between the pressing plate and the side plate of the present invention;

[0048] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of the middle C area;

[0049] Fig.10 This is a schematic diagram of the structure of the auxiliary sandblasting mechanism of the present invention;

[0050] Fig.11 It is a schematic diagram of the connection structure of the sandblasting box and the sandblasting head of the present invention.

[0051] In the figure: 1. Cutting table; 2. Mounting frame; 3. Cylinder; 4. Pressing plate;

[0052] 5. Clamping force control mechanism; 501. Moving plate; 502. Sliding column; 503. Clamping plate; 504. Sliding plate; 505. Mounting plate; 506. Connecting column; 507. Moving block; 508. Sliding groove; 509. First spring; 510. Limiting block; 511. Power switch; 512. Connecting plate; 513. Linkage plate; 514. Fixed plate; 515. Driving shaft; 516. Clamping column; 517. Handle; 518. Clamping hole; 519. Warning light;

[0053] 6. Pressing shape adjustment mechanism; 601. Side plate; 602. Rotating shaft; 603. Push rod; 604. Lifting plate; 605. Groove; 606. Cylinder; 607. Lifting column; 608. Horizontal plate; 609. Moving groove; 610. Limiting column; 611. Push plate; 612. Second spring; 613. Vertical plate; 614. Vertical groove; 615. Limiting hole;

[0054] 7. Auxiliary sandblasting mechanism; 701. Support plate; 702. Sandblasting box; 703. Auxiliary plate; 704. Connecting rod; 705. Base plate; 706. Corrugated plate; 707. Sandblasting tube; 708. Universal joint; 709. Sandblasting head; 710. Linkage rod. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The auxiliary clamping and fixing device of this embodiment is used for cutting processing of a metal welding machine, such as Figure 1 - Fig.11 As shown, it includes a cutting table 1, the upper end surface of the cutting table 1 is fixedly connected to a mounting frame 2, a cylinder 3 is fixedly connected at the center of the upper end surface of the mounting frame 2, a pressing plate 4 is fixedly connected to the output end of the cylinder 3, and a clamping force control mechanism 5 is provided on the upper end surface of the cutting table 1, and the clamping force control mechanism 5 is used to control the clamping force of the metal workpiece.

[0057] In this embodiment, Figure 1 and Figure 2 As shown, the clamping force control mechanism 5 includes symmetrically arranged sliding columns 502, which are all slidably connected to the mounting frame 2, and the sliding columns 502 are fixedly connected to the movable plate 501 at the opposite end, and the movable plate 501 is symmetrically slidably connected to the connecting columns 506, and the clamping plate 503 is fixedly connected between the connecting columns 506, and the first spring 509 is symmetrically fixedly connected between the clamping plate 503 and the movable plate 501, and the first spring 509 is sleeved on the outer surface of the connecting column 506. When the contraction degree of the first spring 509 is adjusted, the rebound force of the first spring 509 on the clamping plate 503 can be controlled, and the rebound force on the clamping plate 503 is the clamping force applied to the metal workpiece, thereby controlling the clamping force of the clamping plate 503 on the metal workpiece.

[0058] In this embodiment, Figure 2 and Figure 6 As shown, the movable plate 501 is symmetrically fixedly connected to the mounting plate 505 on the side away from the clamping plate 503, and the upper end surface of the mounting plate 505 is provided with a slide groove 508. The end of the sliding column 502 away from the clamping plate 503 is penetrated and slidably connected to the mounting plate 505. The sliding column 502 is fixedly connected to the movable block 507 on the side close to the mounting plate 505. The movable block 507 is slidably connected in the slide groove 508. The slide groove 508 is slidably connected with a limiting block 510, and a connecting plate 512 is fixedly connected between the upper end surfaces of the limiting blocks 510 on the same side. By adjusting the position of the limiting block 510 in the slide groove 508, the sliding distance of the movable block 507 in the slide groove 508 can be controlled.

[0059] In this embodiment, Figure 7As shown, a clamping column 516 is slidably connected through the center of the connecting plate 512, and a handle 517 is fixedly connected to the upper end of the clamping column 516. The clamping column 516 is located directly above the sliding column 502, and clamping holes 518 are equidistantly provided above the outer surface of the sliding column 502. The clamping columns 516 and the clamping holes 518 are clamped together. By clamping the clamping columns 516 and the clamping holes 518 together, the connecting plate 512 can be fixed at a specified position above the sliding column 502.

[0060] In this embodiment, Figure 3 and Figure 4 As shown, the sliding column 502 is fixedly connected with a sliding plate 504 at one end away from the movable plate 501, and the sliding plate 504 is slidably connected to the lower end surface of the cutting table 1. The lower end surface of the sliding plate 504 is rotatably connected with a linkage plate 513, and the linkage plate 513 is rotatably connected with a fixed plate 514 between the ends away from the sliding plate 504. A driving shaft 515 is fixedly connected through the center of the fixed plate 514, and the driving shaft 515 is rotatably connected to the upper end surface of the cutting table 1. A driving motor is fixedly connected to the driving shaft 515. When the driving motor drives the driving shaft 515 to rotate, the sliding plates 504 on both sides can be driven to slide close to each other through the fixed plate 514 and the linkage plates 513 rotatably connected on both sides.

[0061] In this embodiment, Figure 2 As shown, the limit block 510 is fixedly connected to the side close to the moving block 507 with a power switch 511, the power switch 511 is electrically connected to the drive motor, and the power switch 511 is electrically connected to a warning light 519, the warning light 519 is fixedly connected to the side wall of the mounting plate 505, when the limit block 510 slides and contacts the moving block 507, the power switch 511 is pressed, so that the warning light 519 works and the drive motor is turned off.

[0062] In the prior art, when workers operate the clamping and fixing device to clamp and fix the metal workpiece, it is often difficult for workers to accurately control the clamping force based on experience alone, because different metals have different sensitivities and reactions to the clamping force. When the clamping force is too large, the metal workpiece is very likely to be partially or even completely deformed at the clamping position. This deformation will directly cause the preset cutting starting point and end point positions to shift, and then cause the cutting trajectory to deviate from the designed path, seriously affecting the accuracy of the cutting path and the flatness of the cutting surface, and ultimately reducing the cutting accuracy. On the contrary, if the clamping force is too small, the workpiece cannot be effectively fixed, and the workpiece is prone to shaking or moving during the cutting process, resulting in defects such as uneven cutting surfaces, ripples or bumps, which seriously damages the metal cutting process. Compared with the prior art, the contraction length of the first spring 509 can be adjusted according to different metal workpieces, and the clamping force is applied to the metal workpiece by the rebound force of the first spring 509 to control the clamping force. This can not only avoid the problem of partial or overall deformation of the metal workpiece at the clamping position due to improper clamping force caused by insufficient experience or misjudgment of the staff, but also ensure the accuracy of the preset cutting starting point and end point positions, so that the cutting trajectory strictly follows the designed path, improves the accuracy of the cutting path and the flatness of the cutting surface, but also effectively prevents the workpiece from shaking or moving during the cutting process, avoids defects such as uneven cutting surface, ripples or bumps, and significantly improves the overall quality of metal cutting.

[0063] Secondly, by electrically connecting the power switch 511 and the drive motor connected to the drive shaft 515, the drive motor can be automatically turned off and the movement of the clamping plate 503 can be stopped after the clamping force of the first spring 509 on the metal workpiece is sufficient, thereby ensuring that once the clamping force reaches a preset threshold, the drive motor will stop working immediately, preventing excessive deformation or damage of the metal workpiece caused by excessive clamping force, thereby improving the safety of operation;

[0064] Furthermore, by electrically connecting the power switch 511 and the indicator light 519, when the power switch 511 is pressed to turn off the driving motor, the staff can intuitively judge whether the clamped metal workpiece is in a horizontal state by observing whether the indicator lights 519 around the metal workpiece are lit at the same time, without the need for complicated measurements or adjustments, thereby reducing processing errors caused by tilt or offset of the workpiece and improving the accuracy of the metal in subsequent cutting processes.

[0065] In other aspects, this embodiment also provides a pressing shape adjustment mechanism 6 for adjusting the pressing plate 4 according to the shape of the surface of the metal workpiece, such as Figure 1 , Figure 8 and Fig. 9As shown, the pressing shape adjustment mechanism 6 includes symmetrically arranged side plates 601, which are respectively located on both sides of the pressing plate 4. The side plates 601 close to the pressing plate 4 are fixedly connected with a rotating shaft 602, and the rotating shaft 602 is rotatably connected to the side wall of the pressing plate 4.

[0066] In this embodiment, Fig. 9 As shown, one end of the rotating shaft 602 is fixedly connected with a lever 603, and the side of the lever 603 close to the pressing plate 4 is fixedly connected with a cylinder 606, and a lifting plate 604 is arranged between the cylinders 606, and the lifting plate 604 is vertically slidably connected to the side wall of the pressing plate 4, and grooves 605 are provided on both sides of the lifting plate 604, and the cylinders 606 are slidably connected in the grooves 605. When the lifting plate 604 rises, the cylinders 606 can be driven to rise synchronously through the grooves 605 on both sides, and one end of the lever 603 can be driven to move upward, so that the lever 603 synchronously drives the rotating shaft 602 to rotate. This structure ensures the linkage and synchronization between the mechanical components. The sliding connection of the cylinder 606 in the groove 605 makes the force transmission more stable, and reduces the unsmooth movement or jamming caused by friction or excessive gap between components.

[0067] In this embodiment, Fig. 9 As shown, a lifting column 607 is fixedly connected to the upper end surface of the lifting plate 604, and the lifting column 607 is slidably connected to the pressing plate 4. A horizontal plate 608 is fixedly connected to the upper end of the lifting column 607. A moving groove 609 is symmetrically opened on the upper end surface of the horizontal plate 608, and a sliding limit column 610 is passed through the moving groove 609. Vertical plates 613 are arranged on both sides of the horizontal plate 608. The vertical plates 613 are fixedly connected to the upper end surface of the pressing plate 4. A vertical groove 614 is opened on the side of the vertical plate 613 close to the horizontal plate 608. The horizontal plate 608 is slidably connected in the vertical groove 614. Limiting holes 615 are equidistantly opened on the side of the vertical plate 613 away from the vertical groove 614. The limiting holes 615 are connected to the vertical groove 614, and the limiting holes 615 are mutually engaged with the limiting columns 610. By driving the limiting columns 610 to be inserted into the limiting holes 615, the height of the lifting plate 604 can be fixed.

[0068] In this embodiment, Fig. 9As shown, the end of the limiting column 610 away from the limiting hole 615 is fixedly connected with a dial plate 611, and the dial plate 611 is slidably connected in the moving groove 609. The end of the dial plate 611 away from the limiting column 610 is fixedly connected with a second spring 612, and the end of the second spring 612 away from the dial plate 611 is fixedly connected to the inner wall of the moving groove 609. When the dial plate 611 is driven to slide in the moving groove 609, the second spring 612 can be squeezed and the limiting column 610 can be driven to slide into the limiting hole 615. When the dial plate 611 is released, the rebound force of the second spring 612 can push the limiting column 610 to automatically slide out of the moving groove 609 and snap into the limiting hole 615, thereby realizing automatic resetting. This design reduces the need for manual intervention and improves the automation and reliability of the equipment.

[0069] In the prior art, since the surface of metal workpieces often has complex geometric shapes and uneven areas (such as the surface of a rectangular parallelepiped and a cylindrical 606 body), it is difficult for the clamping device to achieve uniform pressure on the entire workpiece surface. This uneven pressing will not only cause the workpiece to tilt or shift during the clamping process, greatly reducing the stability of the clamping, and thus affecting the subsequent processing accuracy, but also the uneven pressure distribution will leave indentations or cause wear on the workpiece surface, causing adverse effects on the appearance of the workpiece, and adding unnecessary difficulty and cost to subsequent processing (such as welding, painting, etc.). Compared with the prior art, the side plates 601 rotatably connected on both sides of the pressing plate 4 can be adjusted to tilt downward according to the shape of the metal workpiece surface. This can not only ensure that the pressing plate 4 is more closely fitted to the workpiece surface, and achieve uniform pressure on the entire workpiece surface, but also effectively prevent the metal workpiece from tilting or shifting during the clamping process, and improve the stability of the clamping. Moreover, whether it is a rectangular parallelepiped, a cylindrical 606 body or other complex-shaped metal workpiece, the device can adapt to its surface shape by adjusting the angle of the side plate 601 to ensure the firmness of the clamping.

[0070] In other aspects, this embodiment also provides an auxiliary sandblasting mechanism 7 for sandblasting the cut portion of a metal workpiece, such as Figure 1 , Fig.10 and Fig.11 As shown, the auxiliary sandblasting mechanism 7 includes a support plate 701, which is fixedly connected to the side wall of the mounting frame 2, and a sandblasting box 702 is fixedly connected to the upper end surface of the support plate 701. The sandblasting box 702 is electrically connected to the cylinder 3, and a universal joint 708 is fixedly connected to the output end of the sandblasting box 702. A sandblasting tube 707 is fixedly connected to the end of the universal joint 708 away from the sandblasting box 702. The sandblasting tube 707 is connected to the sandblasting box 702, and a sandblasting head 709 is fixedly connected to the lower end of the sandblasting tube 707.

[0071] like Fig.10 and Fig.11As shown, the outer surface of the sandblasting tube 707 is symmetrically fixedly connected with a linkage rod 710, and the side of the linkage rod 710 away from the sandblasting tube 707 is fitted with a corrugated plate 706, and the peaks on the side walls of the corrugated plates 706 on both sides are alternately distributed, and the side of the corrugated plates 706 away from the linkage rod 710 is fixedly connected with an auxiliary plate 703, and the auxiliary plates 703 are slidably connected to the lower end surface of the support plate 701, and the opposite side of the auxiliary plate 703 is rotatably connected with a connecting rod 704, and the connecting rod 704 is rotatably connected with a base plate 705 between the ends away from the auxiliary plate 703, and the base plate 705 is fixedly connected to the upper end surface of the pressing plate 4;

[0072] Compared with the prior art, in the process of pressing the metal workpiece to limit the position, the surface of the metal workpiece with cutting is sandblasted at the same time, which can not only thoroughly remove the dirt, grease, oxides and other impurities on the surface of the metal workpiece, but also provide a clean and impurity-free surface for subsequent cutting operations, reduce defects caused by impurities in the cutting process, such as burrs, cracks, etc., thereby improving the cutting quality, and the metal surface after sandblasting is cleaner and tidier, reducing the cleaning and preparation time in the subsequent processing process. At the same time, due to the improvement of cutting quality, subsequent processing (such as welding, grinding, etc.) will also be smoother and more efficient.

[0073] The working process and principle involved in the overall content of the above embodiment are as follows:

[0074] When the staff needs to use the metal welding machine to cut the metal workpiece, the staff first places the metal workpiece on the upper end surface of the cutting table 1, and then pulls the handles 517 above the sliding columns 502 on both sides according to the type of the metal workpiece and the required clamping force, driving the clamping column 516 to slide vertically upward on the connecting plate 512, so that the clamping column 516 and the clamping hole 518 opened on the outer surface of the sliding column 502 are separated. After the clamping column 516 and the clamping hole 518 are completely separated, the staff can pull the handles 517 on both sides horizontally, and use the clamping column 516 to move the two connecting plates 512 closer to each other, driving the lower ends of the connecting plates 512 The limit block 510 symmetrically connected to the surface slides in the groove 605 opened on the upper end surface of the mounting plate 505 toward the moving block 507 to shorten the distance between the moving block 507 and the limit block 510. When the distance between the moving block 507 and the limit block 510 is adjusted, the staff can release the handle 517. Through the gravity of the handle 517 and the clamping column 516, the clamping column 516 can automatically drop vertically on the connecting plate 512 and slide into the clamping hole 518 opened on the surface of the sliding column 502, and fix the limit block 510 at the specified position in the groove 605 through the connecting plate 512.

[0075] After the position of the limit block 510 is fixed, the staff can turn on the driving motor connected to the driving shaft 515 to drive the driving shaft 515 to rotate on the lower end surface of the cutting table 1, so that the fixing plate 514 connected to the outer surface of the driving shaft 515 rotates around the driving shaft 515 as the center of the circle. As the fixing plate 514 rotates, the fixing plate 514 rotates symmetrically through the linkage plate 513 connected to the upper end surface, pulling the slide plates 504 on both sides to slide close to each other at the bottom of the cutting table 1, and driving the sliding column 502 connected to the upper end surface of the slide plate 504 to slide on the mounting frame 2, pushing the sliding column 502 away from the slide The movable plate 501 connected to one end of the plate 504 slides close to each other on the upper end surface of the cutting table 1. Since the movable plate 501 is symmetrically penetrated and slidably connected with the connecting column 506, the clamping plate 503 is connected between the connecting column 506, and the first spring 509 is connected between the clamping plate 503 and the movable plate 501, during the movement of the movable plate 501, the clamping plate 503 can be pushed to approach the metal workpiece placed above the cutting table 1 through the connecting column 506 and the first spring 509. After the clamping plate 503 contacts the side wall of the metal workpiece, the clamping plate 503 can push the connecting column 506. The first spring 509 is pressed on the movable plate 501, and as the connecting column 506 moves, the connecting column 506 can push the movable block 507 to slide synchronously in the groove 605 and move in the direction of the limit block 510. When the movable block 507 moves to contact the limit block 510, it presses the power switch 511 connected to the side wall of the limit block 510 to turn off the driving power and stop the rotation of the driving shaft 515. At this time, the first spring 509 will remain in the contracted state, and the elastic rebound force applied by the first spring 509 to the clamping plate 503 is the clamping plate. 503 The clamping force applied to the metal workpiece is controlled to control the clamping force. This can not only avoid the problem of partial or overall deformation of the metal workpiece at the clamping position due to improper clamping force caused by insufficient experience or misjudgment of the staff, but also ensure the accuracy of the preset cutting start and end positions, so that the cutting trajectory strictly follows the designed path, improves the accuracy of the cutting path and the flatness of the cutting surface, but also effectively prevents the workpiece from shaking or moving during the cutting process, avoids defects such as uneven cutting surface, ripples or bumps, and significantly improves the overall quality of metal cutting;

[0076] After the driving motor is turned off, the staff can observe whether the warning lights 519 connected to the side walls of the surrounding mounting plates 505 are on. When the warning lights 519 are fully on, it means that the moving block 507 in the groove 605 will contact the power switch 511 connected to the side wall of the limit block 510 at the same time. The staff can intuitively judge whether the clamped metal workpiece is in a horizontal state by observing whether the warning lights 519 around the metal workpiece are on at the same time, without complicated measurement or adjustment, thereby reducing the processing error caused by the tilt or offset of the workpiece and improving the accuracy of the metal in the subsequent cutting process;

[0077] After the clamping plate 503 has finished clamping the metal workpiece, the staff can open the cylinder 3 to drive the pressing plate 4 to descend to the surface of the metal workpiece. Since the cylinder 3 and the sandblasting box 702 are electrically connected, the sandblasting box 702 can be opened synchronously with the operation of the cylinder 3, and the material inside the sandblasting box 702 can be sprayed out through the sandblasting tube 707 and the sandblasting head 709. During the descent of the pressing plate 4, the pressing plate 4 can pull the base plate 705 connected to the upper end surface to pull one end of the connecting rod 704 connected to the base plate 705 on both sides to move vertically downward synchronously, thereby changing the inclination angle of the connecting rod 704. During the change of the inclination angle of the connecting rod 704, the connecting rod 704 will pull the auxiliary plate 703 connected to the end of the base plate 705 away from the base plate 705, so that the auxiliary plate 703 moves horizontally on the lower end surface of the support plate 701, driving the corrugated plates 706 connected to the side walls of the auxiliary plates 703 on both sides to move synchronously. As the corrugated plate 706 moves, the linkage rod 710 attached to the side wall of the corrugated plate 706 will slide along the wave crest. Since the wave crests of the corrugated plates 706 on both sides are alternately distributed, when the corrugated plates 706 on both sides move horizontally, the linkage rod 710 attached between the corrugated plates 706 will move left and right synchronously, and the sandblasting tube 707 connected between the linkage rods 710 will swing back and forth at the bottom of the sandblasting box 702 through the universal joint 708. As the sandblasting tube 707 swings, the sandblasting tube 707 will drive the sandblasting head 709 connected to the lower end to move synchronously, and the material inside the sandblasting box 702 will be evenly sprayed on the surface of the metal workpiece to be cut below. The sandblasting process can completely remove dirt, grease, oxides and other impurities on the surface of the metal workpiece, provide a clean, impurity-free surface for subsequent cutting operations, reduce defects caused by impurities during the cutting process, such as burrs, cracks, etc., thereby improving the cutting quality;

[0078] After the cylinder 3 drives the pressing plate 4 to descend and fit the surface of the metal workpiece, the cylinder 3 can be closed, and the sandblasting box 702 can be closed at the same time. Then, the staff can pull the two side plates 611 to slide close in the movable groove 609 opened on the upper end surface of the horizontal plate 608, squeeze the second spring 612 connected between the plate 611 and the movable groove 609, drive the plate 611 away from the limiting column 610 connected to one side of the second spring 612 to slide into the movable groove 609, and separate the limiting column 610 and the limiting hole 615 opened on the side wall of the vertical plate 613. When the limiting column 610 and the limiting hole 615 are completely separated, the staff can lift the plate 611 upwards, drive the horizontal plate 608 to slide upwards in the vertical groove 614 opened on the side walls of the two vertical plates 613, and drive the lifting plate 604 to the side of the pressing plate 4 through the lifting column 607 connected to the lower end surface of the horizontal plate 608. The pressing plate 4 rises synchronously on the wall. During the rising process of the pressing plate 4, the pressing plate 4 can move the cylinder 606 to slide in the groove 605 through the grooves 605 opened on both sides, and at the same time drive one end of the lever 603 to move upward, driving the rotating shaft 602 connected to the lever 603 to rotate on the pressing plate 4. As the rotating shaft 602 rotates, the rotating shaft 602 can drive the side plates 601 connected on both sides of the pressing plate 4 to move downward synchronously with the rotating shaft 602 as the center, and contact the surface of the metal workpiece, which can not only ensure that the pressing plate 4 is more closely fitted to the surface of the workpiece and realize uniform pressure on the entire surface of the workpiece, but also effectively prevent the metal workpiece from tilting or deflecting during the clamping process, thereby improving the stability of the clamping. Moreover, whether it is a rectangular parallelepiped, a cylindrical 606 body or other complex-shaped metal workpieces, the device can adapt to its surface morphology by adjusting the angle of the side plate 601 to ensure the firmness of the clamping.

[0079] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An auxiliary clamping and fixing device for cutting processing of a metal welding machine, comprising a cutting table (1), the upper end surface of the cutting table (1) is fixedly connected to a mounting frame (2), the center of the upper end surface of the mounting frame (2) is fixedly connected to a cylinder (3), and the output end of the cylinder (3) is fixedly connected to a pressing plate (4), characterized in that: The upper end surface of the cutting table (1) is provided with a clamping force control mechanism (5), and the clamping force control mechanism (5) is used to control the clamping force of the metal workpiece; The pressing plate (4) is provided with a pressing shape adjustment mechanism (6), and the pressing shape adjustment mechanism (6) is used to adjust the pressing plate (4) according to the shape of the surface of the metal workpiece; An auxiliary sandblasting mechanism (7) is provided on the side wall of the mounting frame (2).

2. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 1 is characterized in that: The auxiliary sandblasting mechanism (7) comprises a support plate (701), wherein the support plate (701) is fixedly connected to the side wall of the mounting frame (2), a sandblasting box (702) is fixedly connected to the upper end surface of the support plate (701), the sandblasting box (702) is electrically connected to the cylinder (3), a universal joint (708) is fixedly connected to the output end of the sandblasting box (702), a sandblasting tube (707) is fixedly connected to the end of the universal joint (708) away from the sandblasting box (702), the sandblasting tube (707) is connected to the sandblasting box (702), and a sandblasting head (709) is fixedly connected to the lower end of the sandblasting tube (707).

3. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 2, characterized in that: The outer surface of the sandblasting tube (707) is symmetrically fixedly connected with a linkage rod (710), and the side of the linkage rod (710) away from the sandblasting tube (707) is fitted with a corrugated plate (706), and the peaks on the side walls of the corrugated plates (706) on both sides are alternately distributed. The side of the corrugated plate (706) away from the linkage rod (710) is fixedly connected with an auxiliary plate (703), and the auxiliary plates (703) are slidably connected to the lower end surface of the support plate (701), and the opposite side of the auxiliary plate (703) is rotatably connected with a linkage rod (704), and the connecting rod (704) is rotatably connected with a base plate (705) between the ends away from the auxiliary plate (703), and the base plate (705) is fixedly connected to the upper end surface of the pressing plate (4).

4. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 1, characterized in that: The clamping force control mechanism (5) includes symmetrically arranged sliding columns (502), each of which is slidably connected to the mounting frame (2), each of which is fixedly connected to a moving plate (501) at one opposite end, each of which is symmetrically slidably connected to a connecting column (506), each of which is fixedly connected to a clamping plate (503) between the connecting columns (506), each of which is symmetrically fixedly connected to the clamping plate (503) and the moving plate (501), and each of which is sleeved on the outer surface of the connecting column (506).

5. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 4, characterized in that: The movable plate (501) is symmetrically fixedly connected to a mounting plate (505) on one side away from the clamping plate (503); a sliding groove (508) is provided on the upper end surface of the mounting plate (505); the end of the sliding column (502) away from the clamping plate (503) is slidably connected to the mounting plate (505); a movable block (507) is fixedly connected to the side of the sliding column (502) close to the mounting plate (505); the movable block (507) is slidably connected in the sliding groove (508); a limiting block (510) is slidably connected in the sliding groove (508); and a connecting plate (512) is fixedly connected between the upper end surfaces of the limiting blocks (510) on the same side.

6. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 5, characterized in that: A clamping column (516) is slidably connected through the center of the connecting plate (512), and a handle (517) is fixedly connected to the upper end of the clamping column (516). The clamping column (516) is located directly above the sliding column (502), and clamping holes (518) are equidistantly provided above the outer surface of the sliding column (502), and the clamping column (516) and the clamping hole (518) are mutually clamped.

7. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 6, characterized in that: The sliding column (502) is fixedly connected to the end away from the moving plate (501) with a sliding plate (504), and the sliding plate (504) is slidably connected to the lower end surface of the cutting table (1). The lower end surface of the sliding plate (504) is rotatably connected to a linkage plate (513), and the linkage plate (513) is rotatably connected to a fixed plate (514) between the ends away from the sliding plate (504). A driving shaft (515) is fixedly connected through the center of the fixed plate (514), and the driving shaft (515) is rotatably connected to the upper end surface of the cutting table (1). A driving motor is fixedly connected to the driving shaft (515).

8. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 7, characterized in that: The limiting block (510) is fixedly connected to a power switch (511) on one side close to the moving block (507), and the power switch (511) is electrically connected to the driving motor. The power switch (511) is electrically connected to a warning light (519), and the warning light (519) is fixedly connected to the side wall of the mounting plate (505).

9. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 1, characterized in that: The pressing shape adjustment mechanism (6) comprises symmetrically arranged side plates (601), wherein the side plates (601) are respectively located on both sides of the pressing plate (4); a rotating shaft (602) is passed through and fixedly connected to the side wall of the pressing plate (4); the rotating shaft (602) is passed through and rotatably connected to the side wall of the pressing plate (4); one end of the rotating shaft (602) is fixedly connected to a lever (603); the side of the lever (603) is fixedly connected to a cylinder (606) on the side of the pressing plate (4); a lifting plate (604) is arranged between the cylinders (606); the lifting plate (604) is vertically slidably connected to the side wall of the pressing plate (4); grooves (605) are provided on both sides of the lifting plate (604); and the cylinders (606) are slidably connected in the grooves (605).

10. The auxiliary clamping and fixing device for cutting processing of a metal welding machine according to claim 9, characterized in that: The upper end surface of the lifting plate (604) is fixedly connected with a lifting column (607), and the lifting column (607) is slidably connected to the pressing plate (4). The upper end of the lifting column (607) is fixedly connected with a horizontal plate (608), and the upper end surface of the horizontal plate (608) is symmetrically provided with a moving groove (609), and the moving groove (609) is slidably connected with a limiting column (610). Vertical plates (613) are arranged on both sides of the horizontal plate (608), and the vertical plates (613) are fixedly connected to the upper end surface of the pressing plate (4). The vertical plates (613) are provided with a vertical groove (614) on the side close to the horizontal plate (608), and the horizontal plate (608) is slidably connected to the vertical groove. (614), the vertical plate (613) is provided with limiting holes (615) at equal distances on one side away from the vertical slot (614), the limiting holes (615) are connected to the vertical slot (614), the limiting holes (615) are mutually engaged with the limiting column (610), the limiting column (610) is fixedly connected with a shifting plate (611) at one end away from the limiting hole (615), the shifting plate (611) is slidably connected in the movable slot (609), the shifting plate (611) is fixedly connected with a second spring (612) at one end away from the limiting column (610), and the second spring (612) is fixedly connected to the inner wall of the movable slot (609) at one end away from the shifting plate (611).

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