Formwork steel plate pretreatment device

Abstract

The invention provides a formwork steel plate pretreatment device, and relates to the technical field of formwork steel plate pretreatment, the formwork steel plate pretreatment device comprises an operation frame, an electric control cabinet is installed on one side of the bottom end of the operation frame, a machined part is arranged on the inner wall of the operation frame through a positioning device, the upper surface of the operation frame fixedly communicates with a treatment frame, and the upper surface of the treatment frame fixedly communicates with a supporting frame; the position, corresponding to the treatment frame, of the lower surface of the operation frame fixedly communicates with a material guiding frame, an air compressor is arranged on the surface of one side of the treatment frame, an air tank is arranged at the position, corresponding to the air compressor, of one end of the lower surface of the operation frame, a sand barrel is fixedly connected to the upper surface of the supporting frame, and one side of the bottom end of the sand barrel fixedly communicates with a sand conveying pipe. According to the device, the problems that the sand blasting flow beam covering area is fixed, the surface of a large-size steel plate cannot be uniformly scanned, and then the surface of the steel plate is pre-treated unevenly, local areas are subjected to excessive sand blasting, and other areas are subjected to insufficient treatment, so that the subsequent coating quality is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of pretreatment technology for mold frame steel plates, and more particularly to a pretreatment device for mold frame steel plates. Background Technology

[0002] Steel plate pretreatment equipment is commonly used in manufacturing and processing, especially in the forming process of sheet metal. Before processing, steel plates need to undergo a series of pretreatment processes to ensure the accuracy, surface quality, and assembly performance of subsequent processing. In the steel structure manufacturing process, steel plate pretreatment equipment can ensure the cleanliness of the steel surface and improve the quality of processes such as welding and painting.

[0003] Existing technologies, such as the invention with publication number CN109023194A, disclose a surface treatment process for single-sided galvanized steel sheets. This patent employs steel sheet pretreatment, surface protection treatment, pickling, primary drying, and hot-dip galvanizing. The dried steel sheet is placed in a galvanizing apparatus, which performs single-sided galvanizing, secondary drying, and forming / winding on the acid-resistant steel sheet. This invention solves the problems of existing single-sided galvanizing processes, which involve directly immersing the steel sheet in a galvanizing bath. These processes lack precise control over the thickness and uniformity of the galvanized layer, and the inability to control the speed and tension of the steel sheet within the bath, affecting the accuracy of single-sided galvanizing. Furthermore, they require manual post-treatment of the galvanized layer, resulting in high labor intensity and low efficiency.

[0004] During the pretreatment of steel plates for mold frames, traditional sandblasting equipment often uses fixed nozzles or swing mechanisms with limited swing range and inaccurate control. This results in a fixed coverage area of ​​the sandblasting jet, making it impossible to uniformly scan the surface of large steel plates. Consequently, the pretreatment of the steel plate surface is uneven, with some areas being over-sandblasted while others are under-treated, affecting the quality of subsequent coating. Summary of the Invention

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the fixed nozzles or oscillating mechanisms with limited oscillation range and inaccurate control of traditional sandblasting equipment. These problems result in a fixed sandblasting jet coverage area, making it impossible to uniformly scan the surface of large steel plates. Consequently, the pretreatment of the steel plate surface is uneven, with some areas being over-sandblasted while others are under-treated, affecting the quality of subsequent coating.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pretreatment device for steel plates of a mold frame, comprising an operating frame, an electrical control cabinet installed on one side of the bottom end of the operating frame, a processing part set on the inner wall of the operating frame by means of a positioning device, a processing frame fixedly connected to the upper surface of the operating frame, a support frame fixedly connected to the upper surface of the processing frame, a guide frame fixedly connected to the lower surface of the operating frame corresponding to the position of the processing frame, an air compressor set on one side of the processing frame, an air tank set at one end of the lower surface of the operating frame corresponding to the position of the air compressor, a sand cylinder fixedly connected to the upper surface of the support frame, a sand conveying pipe fixedly connected to one side of the bottom end of the sand cylinder, a spray pipe fixedly connected to one side of the air compressor, the sand conveying pipe and the spray pipe fixedly connected, a connecting pipe rotatably connected to the inner wall of the support frame, a plurality of nozzles set on the arc surface of the connecting pipe, the surface of the nozzles fixedly connected to the spray pipe, and the processing frame surface corresponding to one end of the connecting pipe. An adjustment device is provided, comprising a fixed frame, one side of the bottom of which is fixedly connected to the side wall surface of the processing frame; a servo motor is fixedly connected to the inner wall of the fixed frame; an eccentric block is fixedly connected to the output end of the servo motor; a driven gear is fixedly connected to the arc surface of one end of the connecting pipe; a side plate is fixedly connected to the surface of the processing frame; a slide rail is fixedly connected to the surface of the side plate; a drive rack is slidably connected to the surface of the slide rail; the teeth of the drive rack mesh with the teeth of the driven gear; a connecting plate is fixedly connected to one side surface of the side plate; an adjusting bead is fixedly connected to one end surface of the connecting plate; the arc surface of the adjusting bead abuts against the surface of the eccentric block; an adjusting rod slides through the surface of the connecting plate; the adjusting rod has a U-shaped cross-section; both ends of the adjusting rod are fixedly connected to the two end side wall surfaces of the drive rack; a spring is fitted onto the arc surface of one end of the adjusting rod; and both ends of the spring are fixedly connected to the connecting plate and one end of the adjusting rod, respectively.

[0007] The aforementioned components achieve the following effect: the adjustment device drives the eccentric block to rotate via a servo motor. The contact between the adjusting bead and the surface of the eccentric block pushes the adjusting rod and the driving rack to move, thereby driving the driven gear and the connecting pipe to rotate, causing the nozzle to oscillate. A spring provides the restoring force, ensuring the reciprocating motion of the driving rack. This design allows the nozzle to evenly cover the surface of the workpiece, expanding the sandblasting or spraying range, improving pretreatment efficiency and quality, while also being compact and highly automated.

[0008] Preferably, a guide ring is fixedly connected to the arc surface of one end of the connecting pipe, a guide rod is fixedly connected to the surface of the guide ring, a guide groove is formed on the surface of the side plate, the cross-section of the guide groove is arc-shaped, and the inner wall of the guide groove is slidably connected to the arc surface of the guide rod.

[0009] The aforementioned components achieve the following effect: when the connecting pipe rotates under the drive of the driven gear, the guide rod slides within the arc-shaped guide groove. This provides a second stable support point for the rotation of the connecting pipe, effectively preventing radial runout or axial movement caused by force on one end of the connecting pipe. This ensures the accuracy and stability of the nozzle's trajectory during the oscillation process, thereby further guaranteeing the uniformity of the treatment effect and improving the long-term reliability of the equipment.

[0010] Preferably, baffles are fixedly connected to both ends of the active rack on the surface of the processing frame, and the cross-sectional dimensions of the baffles are adapted to the cross-sectional dimensions of the active rack.

[0011] The aforementioned components effectively prevent the driving rack from disengaging from the normal meshing area with the driven gear due to inertia or excessive speed during reciprocating motion, or even slipping off the slide rail. This physical constraint greatly enhances the safety and stability of the regulating device, preventing equipment jamming or damage.

[0012] Preferably, protective pads, which are rubber pads, are fixedly connected to the surfaces of the two baffles that are close to each other.

[0013] The aforementioned components achieve the following effect: when the active rack reaches the end of its stroke and impacts the baffle, the rubber protective pad absorbs most of the impact energy, significantly reducing the noise generated by the impact and mitigating impact damage to the active rack and the baffle itself. This not only improves the working environment but also extends the service life of the baffle and the active rack.

[0014] Preferably, the positioning device is disposed on the inner wall surface of the operating frame. The auxiliary device includes two moving rails, one side of which is fixedly connected to the inner wall surface of the operating frame. The inner walls of the two moving rails are slidably connected to the same positioning frame. Two support blocks are fixedly connected to both ends of the surface of the positioning frame. The surfaces of the two support blocks are rotatably connected to the same driving rod. The arc surface of the driving rod is provided with threads in opposite directions. Both ends of the arc surface of the driving rod are threaded through by extrusion blocks. The cross-section of the extrusion blocks is "L". The sides of the four extrusion blocks that are close to each other abut against the four corner surfaces of the workpiece. A slide rod is fixedly connected to one side surface of the positioning frame. The arc surface of the slide rod slides through the side wall surface of the operating frame. An auxiliary plate is fixedly connected to the side wall surface of the positioning frame. A drive motor is fixedly connected to one end of the auxiliary plate. A drive gear is fixedly connected to the output end of the drive motor. A fixed rack is fixedly connected to the side wall surface of the operating frame. The tooth surface of the fixed rack meshes with the tooth surface of the drive gear. One side of the surface of the drive gear is fixedly connected to the slide rod.

[0015] The aforementioned components achieve the following effects: the drive motor rotates the active gear, and since the fixed rack is stationary, the meshing of the gear and rack drives the entire positioning frame to move horizontally along the moving rail, thereby feeding the workpiece into or out of the processing station. Rotating the drive rod, due to the opposite directions of its threads at both ends, causes the two extrusion blocks to move synchronously towards or away from each other. Four L-shaped extrusion blocks simultaneously clamp the workpiece from its four corners. This ensures that the workpiece will not shift due to the impact of sandblasting during processing, guaranteeing consistency and accuracy, while also providing a simple and efficient clamping operation.

[0016] Preferably, a limiting rod is fixedly connected to one side of the two support blocks that are close to each other, and the arc surface of the limiting rod slides through one side of the surface of the extrusion block.

[0017] The effect achieved by the above components is that when the drive rod rotates, the extrusion block, due to being pierced by the limiting rod, can only move linearly along the limiting rod and cannot rotate circumferentially. This ensures the accurate execution of the clamping action, avoids situations where the workpiece cannot be effectively clamped or is damaged due to the rotation of the extrusion block, and improves the reliability of the clamping mechanism.

[0018] Preferably, the extrusion block is a cemented carbide block, the cross-section of the extrusion block is "L" shaped, and both sides of the extrusion block are hollowed out.

[0019] The effects achieved by the above components are as follows: the extrusion block is made of hard alloy material, which has strong wear resistance and is suitable for long-term use; the hollow design reduces weight while maintaining structural strength, reduces the load on the drive rod, makes the movement smoother, and reduces energy consumption.

[0020] Preferably, a collecting device is provided on the inner wall of the bottom end of the operating frame corresponding to the position of the guide frame. The collecting device includes a collecting frame and a base. The collecting frame and the base are located directly below the guide frame. The upper surface of the base abuts against the bottom surface of the collecting frame. Two connecting plates are fixedly connected to both sides of the base. A moving rod slides through the surface of the connecting plate. An insert block is fixedly connected to one end of the moving rod. A side hole is opened on the side wall surface of the bottom end of the collecting frame corresponding to the position of the insert block. The inner wall of the side hole is inserted into the surface of the insert block. A tension spring is sleeved on the arc surface of the moving rod. The two ends of the tension spring are fixedly connected to the insert block and the connecting plate, respectively. An auxiliary rod is fixedly connected to one side of the insert block. The arc surface of the auxiliary rod slides through the surface of the connecting plate.

[0021] The aforementioned components achieve the following effect: under the elastic force of the tension spring, the insert at the end of the moving rod is pushed into the side hole of the collection frame, thus firmly locking the collection frame onto the base and preventing it from moving during waste collection. When cleaning is required, the operator simply pulls the auxiliary rod outward to disengage the insert from the side hole, allowing the collection frame to be removed from the base for emptying and cleaning. This design enables quick installation and removal of the collection frame, greatly simplifying the maintenance process and improving work efficiency.

[0022] Preferably, the surfaces of the two movable rods are fixedly connected to the same pull rod, and the pull rod has a "U" shaped cross-section.

[0023] The aforementioned components achieve the following effect: the pull rod connects the moving rods on both sides, enabling synchronized operation. The operator only needs to lift or pull this U-shaped pull rod to simultaneously release the locking of the two side inserts onto the collection frame.

[0024] Preferably, the upper surface of the base is provided with a slot, and the bottom surface of the inner wall of the slot is engaged with the lower surface of the collection frame.

[0025] The aforementioned components achieve the following effects: the slot provides initial positioning and anti-slip properties. When placing the collection box, its bottom first embeds into the slot of the base. This ensures that the collection box is accurately placed in the predetermined position, preparing it for the insertion of the insert block into the side hole.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, by setting up an adjustment device, it is helpful to use a servo motor to drive the eccentric block to rotate, and through mechanical transmission, convert the circular motion into the precise reciprocating linear motion of the active rack, which in turn drives the driven gear and the connecting pipe to make the nozzle oscillate in a regular manner. It can replace the traditional fixed or manually adjusted nozzle, realizing automated fan-shaped coverage of the sandblasting or spraying area. It greatly expands the single processing area, eliminates processing blind spots, ensures the uniformity and consistency of the surface pretreatment of the processed parts, significantly improves processing efficiency and product quality, and at the same time reduces the labor intensity of operators.

[0027] 2. In this invention, a positioning device is installed to achieve rapid, precise, and secure clamping of the workpiece. This device integrates horizontal movement and bidirectional clamping functions: a motor-driven gear and rack mechanism easily feeds the positioning frame carrying the workpiece into or out of the processing station; by driving a drive rod with reverse threads, four "L"-shaped extrusion blocks can simultaneously clamp the workpiece from its four corners. The clamping process is rapid and reliable, ensuring that the workpiece will not shift during high-impact treatments such as sandblasting, thus guaranteeing the accuracy of the processing effect. Simultaneously, the device has a high degree of automation and strong applicability, effectively adapting to mold frame steel plates of different sizes, improving the equipment's versatility and production efficiency.

[0028] 3. In this invention, the collection device employs a structure combining spring latches and positioning slots, enabling convenient installation and disassembly of the waste collection frame. Under the action of the tension spring, the collection frame is automatically locked in place, ensuring stable operation. During cleaning, the latches on both sides can be released simultaneously by pulling the lever, allowing for quick removal of the collection frame. This greatly simplifies the cleaning process for waste sand and scale, saves maintenance time and manpower, helps maintain a clean working environment, and ensures continuous and efficient operation of the equipment, thus improving the overall user experience of the pretreatment device. Attached Figure Description

[0029] Figure 1 This invention provides a three-dimensional structural schematic diagram of a pretreatment device for mold frame steel plates; Figure 2 This is a partial schematic diagram of the three-dimensional structure of a pre-treatment device for mold frame steel plates proposed in this invention; Figure 3 A partial structural schematic diagram of the connecting pipe of a pre-treatment device for mold steel plates is provided for this invention; Figure 4 This invention provides a schematic diagram of the adjustment device of a pretreatment apparatus for a mold frame steel plate. Figure 5 This invention provides an enlarged structural schematic diagram of point A of a pre-treatment device for mold frame steel plates; Figure 6 This invention provides a schematic diagram of the positioning device of a pre-treatment apparatus for mold steel plates. Figure 7 This invention provides an enlarged structural schematic diagram of point B of a pre-treatment device for mold frame steel plates. Figure 8 This invention provides a schematic diagram of the structure of a collection device for a pre-treatment apparatus for mold steel plates. Figure 9 This is a partial structural diagram of the collection device of the pretreatment apparatus for mold frame steel plates proposed in this invention.

[0030] Legend: 1. Operating frame; 2. Electrical control cabinet; 3. Processing frame; 4. Guide frame; 5. Adjusting device; 501. Fixed frame; 502. Servo motor; 503. Eccentric block; 504. Adjusting bead; 505. Driven gear; 506. Guide ring; 507. Side plate; 508. Guide rod; 509. Guide groove; 510. Protective pad; 511. Drive rack; 512. Slide rail; 513. Adjusting rod; 514. Connecting plate; 515. Spring; 516. Baffle; 6. Positioning device; 601. Moving rail; 602. Positioning frame; 603. Auxiliary plate; 604. Drive motor 605. Drive gear; 606. Slide rod; 607. Fixed rack; 608. Support block; 609. Drive rod; 610. Extrusion block; 611. Limiting rod; 7. Collection device; 701. Base; 702. Collection frame; 705. Side hole; 706. Connecting plate; 707. Inlay block; 708. Pull rod; 709. Moving rod; 710. Auxiliary rod; 711. Tension spring; 712. Slot; 8. Air compressor; 9. Sand cylinder; 10. Air tank; 11. Support frame; 12. Sand conveying pipe; 13. Spray pipe; 14. Nozzle; 15. Connecting pipe; 16. Machined part. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0033] like Figure 1-9As shown, the present invention provides a pre-treatment device for mold frame steel plates, including an operating frame 1, an electrical control cabinet 2 installed on one side of the bottom of the operating frame 1, a processing part 16 provided on the inner wall of the operating frame 1 by means of a positioning device 6, a processing frame 3 fixedly connected to the upper surface of the operating frame 1, a support frame 11 fixedly connected to the upper surface of the processing frame 3, a guide frame 4 fixedly connected to the lower surface of the operating frame 1 at the position corresponding to the processing frame 3, an air compressor 8 provided on one side of the processing frame 3, an air tank 10 provided at one end of the lower surface of the operating frame 1 at the position corresponding to the air compressor 8, and a support frame 10 fixedly connected to the upper surface of the support frame 11. A sand cylinder 9 is connected, and a sand conveying pipe 12 is fixedly connected to one side of the bottom end of the sand cylinder 9. A spray pipe 13 is fixedly connected to one side of the air compressor 8. The sand conveying pipe 12 and the spray pipe 13 are fixedly connected. A connecting pipe 15 is rotatably connected to the inner wall of the support frame. Several nozzles 14 are provided on the arc surface of the connecting pipe 15. The surface of the nozzles 14 is fixedly connected to the spray pipe 13. An adjustment device 5 is provided on the surface of the processing frame 3 at one end of the connecting pipe 15. A positioning device 6 is provided on the inner wall surface of the operating frame 1. A collection device 7 is provided on the inner wall of the bottom end of the operating frame 1 at the position corresponding to the guide frame 4.

[0034] The specific settings and functions of its adjustment device 5, positioning device 6, and collection device 7 will be described in detail below.

[0035] like Figure 3 , Figure 4 and Figure 5As shown, the adjustment device 5 includes a fixed frame 501. One side of the bottom end of the fixed frame 501 is fixedly connected to the side wall surface of the processing frame 3. A servo motor 502 is fixedly connected to the inner wall of the fixed frame 501. An eccentric block 503 is fixedly connected to the output end of the servo motor 502. A driven gear 505 is fixedly connected to the arc surface of one end of the connecting pipe 15. A side plate 507 is fixedly connected to the surface of the processing frame 3. A slide rail 512 is fixedly connected to the surface of the side plate 507. A drive rack 511 is slidably connected to the surface of the slide rail 512. The tooth surface of the drive rack 511 meshes with the tooth surface of the driven gear 505. A connecting plate 514 is fixedly connected to one side surface of the side plate 507. An adjusting bead 504 is fixedly connected to one end surface of the connecting plate 514. The arc surface of the adjusting bead 504 abuts against the surface of the eccentric block. An adjusting rod 513 slides through the surface of the connecting plate 514. The cross-section is U-shaped. Both ends of the adjusting rod 513 are fixedly connected to the side wall surfaces of both ends of the active rack 511. A spring 515 is fitted on the arc surface of one end of the adjusting rod 513. The two ends of the spring 515 are fixedly connected to the connecting plate 514 and one end of the adjusting rod 513, respectively. A guide ring 506 is fixedly connected to the arc surface of one end of the connecting pipe 15. A guide rod 508 is fixedly connected to the surface of the guide ring 506. A guide groove 509 is opened on the surface of the side plate 507. The cross-section of the guide groove 509 is arc-shaped. The inner wall of the guide groove 509 is slidably connected to the arc surface of the guide rod 508. Baffles 516 are fixedly connected to the surface of the processing frame 3 at the positions corresponding to the two ends of the active rack 511. The cross-sectional dimensions of the baffles 516 are adapted to the cross-sectional dimensions of the active rack 511. Protective pads 510 are fixedly connected to the side surfaces of the two baffles 516 that are close to each other. The protective pads 510 are rubber pads.

[0036] like Figure 6 and Figure 7As shown, the auxiliary device includes two moving rails 601. One side of each moving rail 601 is fixedly connected to the inner wall surface of the operating frame 1. The inner walls of the two moving rails 601 are slidably connected to the same positioning frame 602. Two support blocks 608 are fixedly connected to both ends of the surface of the positioning frame 602. The surfaces of the two support blocks 608 are rotatably connected to the same drive rod 609. The arc surface of the drive rod 609 has threads with opposite directions. Both ends of the arc surface of the drive rod 609 are threaded through pressing blocks 610. The cross-section of the pressing blocks 610 is "L" shaped. The sides of the four pressing blocks 610 that are close to each other abut against the four peripheral corner surfaces of the workpiece 16. A slide rod 606 is fixedly connected to one side of the positioning frame 602. The arc surface of the slide rod 606 is connected to the operating frame 1. The side wall surface of the operating frame 1 is slidably penetrated. An auxiliary plate 603 is fixedly connected to the side wall surface of the positioning frame 602. A drive motor 604 is fixedly connected to one end of the auxiliary plate 603. An active gear 605 is fixedly connected to the output end of the drive motor 604. A fixed rack 607 is fixedly connected to the side wall surface of the operating frame 1. The tooth surface of the fixed rack 607 meshes with the tooth surface of the active gear 605. One side of the surface of the active gear 605 is fixedly connected to the slide rod 606. A limit rod 611 is fixedly connected to the side of the two support blocks 608 that are close to each other. The arc surface of the limit rod 611 slidably penetrates one side of the surface of the extrusion block 610. The extrusion block 610 is a hard alloy block. The cross section of the extrusion block 610 is "L" shaped. Both sides of the extrusion block 610 are hollow.

[0037] like Figure 8 and Figure 9 As shown, the collecting device 7 includes a collecting frame 702 and a base 701. The collecting frame 702 and the base 701 are located directly below the guide frame 4. The upper surface of the base 701 abuts against the bottom surface of the collecting frame 702. Two connecting plates 706 are fixedly connected to both sides of the base 701. A moving rod 709 slides through the surface of the connecting plate 706. An insert block 707 is fixedly connected to one end of the moving rod 709. A side hole 705 is opened on the bottom side wall surface of the collecting frame 702 corresponding to the position of the insert block 707. The inner wall of the side hole 705 is connected to the insert block 707. The surfaces of the two moving rods 709 are connected by an interlocking mechanism. A tension spring 711 is fitted on the arc surface of the moving rod 709. The two ends of the tension spring 711 are fixedly connected to the insert block 707 and the connecting plate 706, respectively. An auxiliary rod 710 is fixedly connected to one side of the insert block 707. The arc surface of the auxiliary rod 710 slides through the surface of the connecting plate 706. The surfaces of the two moving rods 709 are fixedly connected to the same pull rod 708. The cross-section of the pull rod 708 is U-shaped. A slot 712 is provided on the upper surface of the base 701. The bottom surface of the inner wall of the slot 712 is engaged with the lower surface of the collection frame 702.

[0038] The overall working principle is as follows: the mold frame steel plate workpiece 16 to be processed is placed in the positioning frame 602. The operator manually rotates the drive rod 609. Because the drive rod 609 has reverse threads at both ends, the four "L"-shaped extrusion blocks 610 move synchronously towards the center, firmly clamping the workpiece 16 from the four corners. Thus, the limit rod 611 ensures that the extrusion blocks 610 only make linear movements and prevents them from rotating. Then, the drive motor 604 is started to work, driving the drive gear 605 to rotate. Due to the fixed rack 60 7. Engagement allows the entire positioning frame 602 to move horizontally along the moving rail 601 quickly, precisely delivering the clamped workpiece to the pre-processing station directly below the processing frame 3. At this time, the air compressor 8 starts, generating a high-pressure airflow that passes through the spray pipe 13. Simultaneously, the abrasive steel grit in the sand cylinder 9 is drawn into the spray pipe 13 under negative pressure through the sand conveying pipe 12, mixing with the high-pressure airflow to form a high-speed jet. The mixed high-speed abrasive jet enters the connecting pipe 15 and is finally ejected from multiple evenly distributed nozzles 14, impacting the surface of the steel plate. At the same time, the adjusting device 5 starts working, the servo motor 502 starts, driving the eccentric block 503 to rotate at a constant speed. The eccentric contour of the eccentric block 503 periodically pushes the adjusting bead 504, which in turn pushes the active rack 511 to perform reciprocating linear motion on the slide rail 512 through the adjusting rod 513. Spring 515 provides the restoring force during the return stroke of eccentric block 503, ensuring continuous and stable reciprocating motion. Driven rack 511 drives driven gear 505, thereby causing the entire connecting pipe 15 and its nozzle 14 to swing forward and backward at a certain angle. The swing of nozzle 14 expands the blasting area from a single point into a fan-shaped surface. Combined with the fixed position of the workpiece, this ensures that the high-speed abrasive can evenly and without dead angles cover the entire steel plate surface, efficiently completing pre-treatment processes such as rust removal, cleaning, or roughening. The cooperation of guide rod 508 and guide groove 509 ensures the stability of the swing of connecting pipe 15. Waste abrasive, rust, and impurities generated during processing fall from the steel plate surface and are collected and fall through the guide frame 4 at the bottom of processing frame 3. All the falling waste falls into the collection frame 702 directly below. The collection frame 702 is initially positioned by the slot 712 at the bottom and is securely locked to the base 701 by the insert block 707 inserted into the side hole 705 under the action of the tension spring 711. When the pre-processing work is completed or the collection frame 702 is nearly full, the operator only needs to pull the lever 708 to simultaneously pull the insert blocks 707 on both sides out of the side hole 705, thereby easily removing the collection frame 702 for centralized processing or recycling of waste. After completion, it can be quickly installed back in its original position.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for pre-treating a steel sheet for a die set, comprising an operating frame (1), characterized in that: The bottom end side of the operation frame (1) is provided with an electric control cabinet (2), the inner wall of the operation frame (1) is provided with a machining part (16) by means of a positioning device (6), the upper surface of the operation frame (1) is fixedly connected with a processing frame (3), the upper surface of the processing frame (3) is fixedly connected with a supporting frame (11), the lower surface of the operation frame (1) is fixedly connected with a material guiding frame (4) corresponding to the position of the processing frame (3), one side surface of the processing frame (3) is provided with an air compressor (8), one end of the lower surface of the operation frame (1) is provided with an air tank (10) corresponding to the position of the air compressor (8), the upper surface of the supporting frame (11) is fixedly connected with a sand cylinder (9), the bottom end side of the sand cylinder (9) is fixedly connected with a sand conveying pipe (12), one side of the air compressor (8) is fixedly connected with a spraying pipe (13), the sand conveying pipe (12) and the spraying pipe (13) are fixedly connected, the inner wall of the supporting frame is rotatably connected with a communication pipe (15), the circular surface of the communication pipe (15) is provided with a plurality of nozzles (14), the surface of the nozzle (14) is fixedly connected with the spraying pipe (13), the surface of the processing frame (3) is provided with an adjusting device (5) corresponding to one end of the communication pipe (15), the adjusting device (5) comprises a fixed frame (501), the bottom end side of the fixed frame (501) is fixedly connected with the side wall surface of the processing frame (3), the inner wall of the fixed frame (501) is fixedly connected with a servo motor (502), the output end of the servo motor (502) is fixedly connected with an eccentric block (503), one end of the circular surface of the communication pipe (15) is fixedly connected with a driven gear (505), the surface of the processing frame (3) is fixedly connected with a side plate (507), the surface of the side plate (507) is fixedly connected with a sliding rail (512), the surface of the sliding rail (512) is slidably connected with a driving gear rack (511), the tooth surface of the driving gear rack (511) is engaged with the tooth surface of the driven gear (505), one side surface of the side plate (507) is fixedly connected with a connecting plate (514), one end surface of the connecting plate (514) is fixedly connected with an adjusting bead (504), the circular surface of the adjusting bead (504) is abutted with the surface of the eccentric block, the surface of the connecting plate (514) is slidably penetrated by an adjusting rod (513), the section of the adjusting rod (513) is "U" shaped, both ends of the adjusting rod (513) are fixedly connected with the end side wall surfaces of the driving gear rack (511), the circular surface of one end of the adjusting rod (513) is sleeved with a spring (515), both ends of the spring (515) are fixedly connected with the connecting plate (514) and one end of the adjusting rod (513) respectively.

2. A mould shelf steel plate pre-treatment apparatus according to claim 1, characterised in that: One end of the communicating pipe (15) is fixedly connected with a guide ring (506), the surface of the guide ring (506) is fixedly connected with a guide rod (508), the surface of the side plate (507) is provided with a guide groove (509), the cross section of the guide groove (509) is arc-shaped, and the inner wall of the guide groove (509) is in sliding connection with the arc surface of the guide rod (508).

3. A die set steel plate pre-treatment apparatus according to claim 1, wherein: The surface of the processing frame (3) is fixedly connected with a baffle (516) corresponding to the position of the two ends of the driving rack (511), and the cross section size of the baffle (516) is matched with the cross section size of the driving rack (511).

4. A mold frame steel plate pre-treatment device according to claim 1, characterized in that: The surface of the processing frame (3) is fixedly connected with a baffle (516) corresponding to the position of the two ends of the driving rack (511), and the cross section size of the baffle (516) is matched with the cross section size of the driving rack (511).

5. A mold frame steel plate pre-treatment device according to claim 1, characterized in that: The positioning device (6) is arranged on the inner wall surface of the operation frame (1), the auxiliary device comprises two moving rails (601), one side of the two moving rails (601) is fixedly connected with the inner wall surface of the operation frame (1), the inner walls of the two moving rails (601) are slidably connected with the same positioning frame (602), the surface of the positioning frame (602) is fixedly connected with two supporting blocks (608) at both ends, the surface of the two supporting blocks (608) is rotatably connected with the same driving rod (609), the arc surface of the driving rod (609) is provided with threads in opposite directions, the arc surfaces of the driving rod (609) are threadedly penetrated by extrusion blocks (610) at both ends, the cross section of the extrusion block (610) is "L" shaped, the sides of the four extrusion blocks (610) close to each other are abutted with the four corner surfaces of the workpiece (16), one side surface of the positioning frame (602) is fixedly connected with a sliding rod (606), the arc surface of the sliding rod (606) is slidably penetrated through the side wall surface of the operation frame (1), the side wall surface of the positioning frame (602) is fixedly connected with an auxiliary plate (603), one end of the auxiliary plate (603) is fixedly connected with a driving motor (604), the output end of the driving motor (604) is fixedly connected with a driving gear (605), the side wall surface of the operation frame (1) is fixedly connected with a fixed rack (607), the tooth surface of the fixed rack (607) is in meshing connection with the tooth surface of the driving gear (605), and one side of the surface of the driving gear (605) is fixedly connected with the sliding rod (606).

6. A mould shelf steel plate pre-treatment apparatus according to claim 5, characterised in that: The sides of the two supporting blocks (608) close to each other are fixedly connected with limit rods (611), and the arc surfaces of the limit rods (611) are slidably penetrated through one side of the surface of the extrusion block (610).

7. A mould shelf steel plate pre-treatment apparatus according to claim 5, wherein: The extrusion block (610) is a hard alloy block, the cross section of the extrusion block (610) is "L" shaped, and the two side surfaces of the extrusion block (610) are in a hollow shape.

8. A mold frame steel plate pre-treatment device according to claim 1, characterized by: The operation frame (1) bottom end inner wall corresponds to the position of the material guide frame (4) is provided with collecting device (7), the collecting device (7) includes collecting frame (702), base (701), the collecting frame (702) and base (701) are located below the material guide frame (4), the upper surface of the base (701) and the bottom end surface of the collecting frame (702) are abutted, both side surfaces of the base (701) are fixedly connected with two link plates (706), the surface of the link plate (706) is slidably penetrated by a moving rod (709), one end of the moving rod (709) is fixedly connected with an inlay block (707), a side hole (705) is formed in the bottom end side wall surface of the collecting frame (702) corresponding to the position of the inlay block (707), the inner wall of the side hole (705) is inserted with the surface of the inlay block (707), the circular surface of the moving rod (709) is sleeved with a tension spring (711), the both ends of the tension spring (711) are fixedly connected with the inlay block (707) and the link plate (706) respectively, one side of the inlay block (707) is fixedly connected with an auxiliary rod (710), the circular surface of the auxiliary rod (710) is slidably penetrated with the surface of the link plate (706).

9. A mould shelf steel plate pre-treatment apparatus according to claim 8, characterised in that: The surfaces of two moving rods (709) are fixedly connected with the same pull rod (708), and the section of the pull rod (708) is "U" shaped.

10. A mould shelf steel plate pre-treatment apparatus according to claim 8, characterised in that: The upper surface of the base (701) is provided with a clamping groove (712), and the inner wall bottom surface of the clamping groove (712) is clamped with the lower surface of the collecting frame (702).

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