Steel plate polishing device

Abstract

The invention relates to the technical field of ship machining and manufacturing, in particular to a steel plate polishing device. A steel plate polishing device comprises a workbench and a gate-type frame structure located on the workbench, a polishing mechanism used for polishing a steel plate is arranged on the gate-type frame structure, and an elastic buffering mechanism is arranged between the gate-type frame structure and the polishing mechanism so that the polishing mechanism and the gate-type frame structure can move relatively. The elastic buffering mechanism comprises a connecting cylinder fixedly arranged on the door-type frame, a piston rod fixedly connected with the grinding mechanism is slidably arranged in the connecting cylinder, the piston rod is in sealing and sliding fit with the inner wall of the connecting cylinder, and an elastic piece is arranged between the connecting cylinder and the grinding mechanism. A communicating opening communicating with the atmosphere is formed in the end, away from the polishing mechanism, of the connecting cylinder, and a flow speed control structure for controlling the flow speed of inlet and outlet air is arranged on the communicating opening. Therefore, the problem of polishing deviation caused by vibration in the polishing process in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship processing and manufacturing, and in particular to a steel plate grinding device. Background Art

[0002] During the shipbuilding process, different steel plates are assembled. These plates are often not ready for immediate use and require grinding equipment to improve the quality of subsequent welding. During the grinding process, the steel plates are typically placed on a workbench, where they are then polished.

[0003] For flat steel plates, the plate can be placed against the surface of the workbench during the grinding process. This allows the workbench to serve as a stable foundation and support the plate being processed. However, for curved steel plates, the grinding process may cause the plate to vibrate at the same frequency, causing grinding deviation and affecting the grinding effect. Summary of the Invention

[0004] In view of this, the present invention provides a steel plate grinding device to solve the problem of grinding deviation caused by vibration during the grinding process in the prior art.

[0005] A steel plate grinding device includes a workbench and a portal frame structure located on the workbench, wherein a grinding mechanism for grinding steel plates is provided on the portal frame structure, and an elastic buffer mechanism is provided between the portal frame structure and the grinding mechanism so that the grinding mechanism and the portal frame structure can move relative to each other, and the elastic buffer mechanism includes a connecting cylinder fixedly provided on the portal frame, a piston rod fixedly connected to the grinding mechanism is slidingly provided in the connecting cylinder, the piston rod is sealed and slidably fitted with the inner wall of the connecting cylinder, an elastic part is provided between the connecting cylinder and the grinding mechanism, and a connecting port connected to the atmosphere is provided at one end of the connecting cylinder away from the grinding mechanism, and a flow rate control structure for controlling the gas flow rate of the inlet and outlet gas is provided on the connecting port.

[0006] Furthermore, an air inlet pipe and an exhaust pipe are provided on the connecting tube, the connecting port includes an air inlet located on the air inlet pipe and an exhaust port located on the exhaust pipe, and the flow rate control structure is a one-way valve located on the air inlet and the exhaust port.

[0007] Furthermore, two connecting cylinders are provided, and the two connecting cylinders are connected through an air intake pipe and an exhaust pipe. The air intake is located at the center of the air intake pipe, and the exhaust port is located at the center of the exhaust pipe.

[0008] Furthermore, a bellows is provided between the connecting tube and the polishing mechanism to wrap around the outer circumference of the elastic member.

[0009] Furthermore, one end of the bellows is in contact with the grinding mechanism, and the other end is butted against the end of the connecting tube.

[0010] Furthermore, the elastic buffer mechanism also includes arc-shaped steel sheets connected between the portal frame structure and the grinding mechanism. The arc-shaped steel sheets are grouped in pairs and symmetrically arranged, and rubber rods are connected to both ends of the concave side surfaces of the arc-shaped steel sheets.

[0011] Furthermore, the portal frame structure guide is arranged on a workbench, and a slide groove is arranged on one of the workbench and the portal frame structure, and a slider corresponding to the slide groove is arranged on the other.

[0012] Furthermore, a slide groove is provided on the workbench, a lead screw passing through the portal frame structure is provided in the slide groove, a threaded hole matching the lead screw thread is provided on the slider of the portal frame, and a pushing motor is also provided in the slide groove to drive the lead screw to rotate to push the portal frame structure to move.

[0013] Furthermore, the grinding mechanism includes a mounting frame, which includes a horizontal connecting plate and vertical connecting plates extending vertically downward at both ends of the horizontal connecting plate, and a grinding roller is fixed on the vertical connecting plate. A driving motor for driving the grinding roller to rotate is provided on the outer side of one of the vertical connecting plates.

[0014] Furthermore, a steel plate fixing mechanism for fixing the steel plate is provided on the workbench. The steel plate fixing mechanism includes electric push rods spaced apart on the workbench, and the ends of the electric push rods are provided with clamping blocks that abut against the edges of the steel plates.

[0015] The beneficial effects of the steel plate grinding device in the present invention are as follows: the steel plate grinding device in the present invention facilitates the arrangement of a grinding mechanism through a workbench and a portal frame structure located on the workbench, thereby facilitating the arrangement of a suspended grinding mechanism for grinding the steel plate on the workbench; an elastic buffer mechanism is arranged between the portal frame structure and the grinding mechanism, so that the grinding mechanism can move relative to the workbench, that is, when vibration occurs, it can be absorbed by the elastic buffer mechanism; a connecting cylinder is arranged on the portal frame structure, a piston rod is arranged on the grinding mechanism, and the piston rod and the connecting cylinder are slidably sealed, so that the portal frame structure and the grinding mechanism can move relative to each other; and the arrangement of the elastic member facilitates the grinding process. During the grinding process, the grinding mechanism fits tightly against the steel plate to be processed, and at the same time, a part of the kinetic energy is absorbed by the spring when vibration and impact are generated; by arranging a connecting port on the connecting cylinder and arranging a flow rate control structure on the connecting port, a structure for limiting the movement of the piston rod is formed on the connecting cylinder, that is, the movement of the piston rod requires a certain amount of gas to be added or discharged through the connecting port in order to move, and the setting of the flow rate control structure prevents the addition and discharge from being too fast, thereby suppressing the overly rapid movement of the grinding mechanism, and making the operation of the grinding mechanism more stable when vibration occurs, thereby solving the problem of grinding deviation caused by vibration during the grinding process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the structure of an embodiment of a steel plate grinding device of the present invention;

[0018] Figure 2 Schematic diagram of the structure of an embodiment of the steel plate grinding device of the present invention (the workbench is hidden);

[0019] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0021] The meanings of the numbers in the figure are: 1. Workbench; 2. Door frame structure; 3. Mounting frame; 41. Grinding roller; 42. Driving motor; 5. Elastic buffer structure; 51. Connecting cylinder; 52. Piston rod; 53. Spring; 54. Exhaust pipe; 55. First one-way valve; 56. Inlet pipe; 57. Second one-way valve; 58. Limiting ring; 59. First curved steel sheet; 510. Second curved steel sheet; 511. Rubber rod; 512. Bellows; 513. Filter; 61. Slider; 62. Threaded hole; 63. Slide; 64. Push motor; 65. Screw; 66. Partition; 71. Electric push rod; 72. Clamp. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0023] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0024] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be understood to indicate or imply relative importance. These terms are only used to distinguish information of the same type from each other. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information without departing from the scope of this disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0027] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0028] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0029] In embodiment 1 of the steel plate grinding device of the present invention:

[0030] like Figure 1 As shown, the steel plate grinding device in this embodiment includes a workbench 1 for placing the steel plate to be ground. A portal frame structure 2 is provided on the workbench 1. The portal frame structure 2 specifically includes columns located on the workbench 1 and crossbeams located at the top of the columns. In order to grind the steel plate, the device also includes a grinding mechanism disposed on the portal frame 2 for grinding the steel plate. Specifically, the grinding mechanism is disposed on the crossbeam of the portal frame 2, thereby forming a workspace for placing the steel plate to be ground between the workbench 1 and the grinding mechanism.

[0031] The grinding mechanism includes a grinding roller 41 for grinding the steel plate. In order to fix the grinding roller 41, the grinding mechanism also includes a mounting frame 3. The mounting frame 3 includes a horizontal connecting plate and vertical connecting plates located at both ends of the horizontal connecting plate and extending vertically downward. The grinding roller 41 is arranged between the two vertical connecting plates. A drive motor 42 for driving the grinding roller 41 to rotate is also provided on the outside of one of the vertical connecting plates. The output shaft of the drive motor 42 is fixedly connected to the grinding roller 41. When the drive motor 42 rotates, it can synchronously drive the grinding roller 41 to rotate, thereby grinding the steel plate to be polished. In this embodiment, the drive motor is a servo motor, which can more conveniently control its rotation speed and control the grinding effect.

[0032] Since the grinding mechanism may generate a certain amount of vibration during operation, the vibration will cause the steel plate to vibrate at the same frequency, which is not conducive to controlling the grinding effect. Therefore, an elastic buffer mechanism is also provided between the door frame mechanism and the grinding mechanism. Figure 2 、 Figure 3 and Figure 4As shown, the elastic buffer mechanism includes a connecting tube 51 fixedly mounted on the crossbeam and a piston rod 52 fixedly mounted on the transverse connecting plate. The plug portion of the piston rod 52 is sealed and slidably fitted with the inner wall of the connecting tube 51, thereby allowing the portal frame structure 2 and the grinding mechanism to move relative to each other. In order to ensure that the grinding mechanism can be in close contact with the surface of the steel plate during the grinding process, an elastic member is further provided between the connecting tube 51 and the crossbeam. Specifically, the elastic member in this embodiment is a spring 53. During grinding, the grinding mechanism will move upward due to the reaction force of the steel plate, thereby compressing the spring 53. Under the action of the spring 53, the grinding roller 41 is closely fitted to the steel plate, ensuring a good surface grinding effect.

[0033] To prevent the grinding mechanism from vibrating too quickly, causing the steel plate to vibrate synchronously, an air inlet pipe 56 and an exhaust pipe 54 are provided at the end of the connecting tube 51 away from the grinding mechanism. The air inlet pipe 56 is provided with an air inlet port that is connected to the atmosphere for air intake, and the exhaust pipe 54 is also provided with an exhaust port that is connected to the atmosphere for air exhaust. Both the air inlet port and the exhaust port are connected to the space inside the connecting tube 51, allowing air to be replenished or exhausted inside the connecting tube 51. The movement of the piston rod 52 is related to the volume of the cavity within the connecting tube 51, which in turn is related to the amount of gas within the connecting tube 51. By controlling the speed of air intake and exhaust in the connecting tube 51, the speed of the piston rod 52 can be affected. A second one-way valve 57 is also provided at the air inlet port, and a first one-way valve 55 is provided at the exhaust port. These two one-way valves can influence the speed of air intake and exhaust, thereby slowing the movement of the piston rod 52, ultimately slowing the movement of the grinding mechanism and improving the grinding effect. Two connecting tubes 51 are provided, connected by an air intake pipe 56 and an air exhaust pipe 54. The air intake is located at the center of the air intake pipe 56, and the air exhaust is located at the center of the air exhaust pipe 54. In other words, the two connecting tubes 51 share the same air intake and exhaust ports, which not only simplifies the structure but also reduces the cross-sectional area of ​​the air intake and exhaust ports corresponding to a single connecting tube 51, further improving the shock absorption effect of the structure.

[0034] If the piston head of the piston rod 52 passes over the air inlet and exhaust ports, the rest of the connecting tube 51 will be exposed to the atmosphere. Therefore, a stop ring 58 is provided within the connecting tube 51 to limit the piston rod 52's movement to its extreme positions. Specifically, in this embodiment, since the air inlet pipe 56 is located at a lower position, the stop ring 58 is provided at a lower position where the connecting tube 51 and the air inlet pipe 56 meet. The stop ring 58 protrudes from the inner wall of the connecting tube 51. When the piston rod 52 reaches the stop ring 58, the stop ring 58 prevents the piston rod 52 from further upward movement. In addition, to maintain a seal, the surface of the piston head of the piston rod 52 is made of rubber material. During the grinding process, fine steel particles are generated on the surface of the steel plate. These hard particles can affect the performance of the spring 53. When attached to the inner wall of the connecting tube 51, the piston head of the piston rod 52 contacts it, causing damage to the piston head, thereby affecting performance. Therefore, a bellows 512 is provided on the outer periphery of the spring 53 to protect the spring 53. One end of the bellows 512 abuts against the crossbeam, and the other end is connected to the end of the connecting tube 51. Filters 513 are also provided on the air inlet and exhaust ports to reduce the impact of dust particles on the grinding device.

[0035] Furthermore, to further enhance the effectiveness of the grinding mechanism, the elastic buffer mechanism further includes curved steel sheets connected between the portal frame structure 2 and the grinding mechanism. Specifically, the curved steel sheets are arranged symmetrically in pairs. In this embodiment, a first curved steel sheet 59 and a second curved steel sheet 510 are provided. Connecting blocks are provided at both ends of the first curved steel sheet 59 and the second curved steel sheet 510 for connection. Furthermore, rubber rods 511 are connected to both ends of the concave side surfaces of the curved steel sheets, thereby enabling the curved steel sheet structure to provide pulling or pushing force to the grinding mechanism.

[0036] like Figure 1 As shown, the workbench 1 has a flat work surface. If the steel plate to be polished is a flat plate, it can be placed directly on the workbench 1. At this time, the steel plate and the workbench 1 are relatively stable. If the steel plate to be polished is a curved plate, it is not easy to fix it on the flat workbench 1. In this embodiment, two electric push rods 71 ​​are arranged at intervals on the workbench 1. The main body of the electric push rod 71 is fixedly set on the workbench 1. The push rods can move relative to the workbench 1, and the two push rods can be relatively close to or away from each other. A clamping block 72 for limiting and fixing the steel plate to be polished is also provided at the end of the push rod. The clamping block 72 is used to press against the edge of the steel plate to be polished, and the thrust of the electric push rod 71 facilitates the pressing and fixing of the steel plate. In this way, not only flat steel plates can be processed, but also curved steel plates can be polished.

[0037] like Figure 2As shown, due to the arrangement of the electric push rod 71, the position of the steel plate to be processed relative to the workbench 1 is relatively fixed. In order to evenly grind all positions of the steel plate, the grinding mechanism needs to move, thereby causing the grinding mechanism and the steel plate to move relative to each other. In this embodiment, a slide 63 is provided on the workbench 1, and a slider 61 is provided on the column of the portal frame structure 2, thereby allowing the portal frame structure 2 to move relative to the workbench 1. In order to drive the portal frame structure 2 to move more stably and accurately, a driving motor 64 is further provided in the slide 63 in this embodiment. A lead screw 65 is fixedly connected to the output shaft of the driving motor 64, and a threaded hole 62 is provided on the slider 61 for threaded engagement with the lead screw 65. In addition, a partition 66 is further provided in the slide 63 to support the lead screw 65. When the driving motor 64 rotates, it can drive the lead screw 65 to rotate, thereby driving the portal frame structure 2 to move along the axial direction of the lead screw 65. In this embodiment, the driving motor 64 is a servo motor, which can conveniently adjust the movement speed and movement distance of the portal frame structure 2.

[0038] like Figure 1 As shown, during operation, the steel plate is first placed in place and clamped by the electric push rod 71. The grinding mechanism is then activated to grind the surface of the steel plate. During grinding, the grinding mechanism moves from one side of the steel plate to the other. In the early stages of grinding, the position to be polished by the grinding mechanism becomes increasingly higher, so the steel plate exerts an upward thrust on the grinding mechanism, causing the grinding mechanism to overcome the elastic force of the spring 53. Furthermore, during the grinding mechanism's movement, the piston rod 52 moves upward, reducing the volume within the connecting tube 51. Air needs to be exhausted, and excess gas is discharged through the exhaust port. During the exhaust process, due to the limited exhaust speed, the grinding mechanism does not move violently, but rather moves more gently. When the grinding mechanism reaches the highest point of the steel plate, the spring 53 begins to extend, the piston rod 52 moves downward, and air begins to flow into the air inlet. Similarly, this structural arrangement allows for a more gentle movement of the grinding mechanism.

[0039] It should be understood that the embodiments described are only a portion 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 persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

Claims

1. A steel plate grinding device, comprising a workbench and a portal frame structure located on the workbench, wherein the portal frame structure is provided with a grinding mechanism for grinding the steel plate, characterized in that: An elastic buffer mechanism is provided between the portal frame structure and the grinding mechanism so that the grinding mechanism and the portal frame structure can move relative to each other. The elastic buffer mechanism includes a connecting cylinder fixedly provided on the portal frame, a piston rod fixedly connected to the grinding mechanism is slidingly provided in the connecting cylinder, the piston rod is sealed and slidingly fitted with the inner wall of the connecting cylinder, an elastic part is provided between the connecting cylinder and the grinding mechanism, and a connecting port connected to the atmosphere is provided at one end of the connecting cylinder away from the grinding mechanism, and a flow rate control structure for controlling the gas flow rate of the inlet and outlet gases is provided on the connecting port.

2. The steel plate grinding device according to claim 1, characterized in that: The connecting tube is provided with an air inlet pipe and an exhaust pipe, the connecting port includes an air inlet located on the air inlet pipe and an exhaust port located on the exhaust pipe, and the flow rate control structure is a one-way valve located on the air inlet and the exhaust port.

3. The steel plate grinding device according to claim 2, characterized in that: There are two connecting cylinders, which are connected via an air intake pipe and an exhaust pipe. The air intake is located at the center of the air intake pipe, and the exhaust is located at the center of the exhaust pipe.

4. The steel plate grinding device according to any one of claims 1 to 3, characterized in that: A bellows is also provided between the connecting tube and the polishing mechanism and is used to wrap around the outer periphery of the elastic member.

5. The steel plate grinding device according to claim 4, characterized in that: One end of the bellows is in contact with the grinding mechanism, and the other end is butted against the end of the connecting tube.

6. The steel plate grinding device according to any one of claims 1 to 3, characterized in that: The elastic buffer mechanism also includes arc-shaped steel sheets connected between the portal frame structure and the grinding mechanism. The arc-shaped steel sheets are grouped in pairs and symmetrically arranged. Both ends of the concave side surfaces of the arc-shaped steel sheets are connected to rubber rods.

7. The steel plate grinding device according to any one of claims 1 to 3, characterized in that: The portal frame structure guide is arranged on a workbench, one of the workbench and the portal frame structure is provided with a slide groove, and the other is provided with a slider corresponding to the slide groove.

8. The steel plate grinding device according to claim 7, characterized in that: The workbench is provided with a slide groove, in which a lead screw passing through the portal frame structure is provided, a threaded hole matching the lead screw thread is provided on the slider of the portal frame, and a driving motor for driving the lead screw to rotate to drive the portal frame structure to move is also provided in the slide groove.

9. The steel plate grinding device according to any one of claims 1 to 3, characterized in that: The grinding mechanism includes a mounting frame, which includes a horizontal connecting plate and vertical connecting plates extending vertically downward at both ends of the horizontal connecting plate. A grinding roller is fixed on the vertical connecting plates, and a driving motor for driving the grinding roller to rotate is provided on the outer side of one of the vertical connecting plates.

10. The steel plate grinding device according to any one of claims 1 to 3, characterized in that: The workbench is provided with a steel plate fixing mechanism for fixing the steel plate. The steel plate fixing mechanism includes electric push rods arranged at intervals on the workbench, and the ends of the electric push rods are provided with clamping blocks that abut against the edges of the steel plates.

Images