A grinding device for grinding the surface of a weld seam

Abstract

The present invention provides a grinding device for grinding the surface of a weld, belonging to the technical field of weld treatment. It includes a main body, and also includes: a grinding mechanism, a calibration mechanism, a lubrication mechanism, and a sliding mechanism. The grinding device for grinding the surface of a weld proposed by this invention changes the structure of the existing grinding head. A fan blade and a communication hole are added inside the existing grinding head. The addition of the fan blade enables the grinding head to generate a gas blowing towards the weld when rotating. This gas blows through the communication hole towards the fitting part between the grinding head and the weld. And the end of the communication hole located on the outer surface of the grinding head is set in a funnel shape, so that the communication hole not only has the function of blowing air, but also can generate a cutting force on the weld, realizing effective cooling between the grinding head and the weld, and can also blow the debris at the fitting part between the grinding head and the weld, preventing scratches on the weld caused by the existence of debris, and improving the stability of the steel door.

Description

Technical Field

[0001] The present invention relates to the field of weld treatment, and more particularly, to a grinding device for grinding the surface of a weld. Background Art

[0002] Upon retrieval, the invention patent with the Chinese patent number CN113500482B discloses an intelligent welding door body weld grinding device, including a base. The upper end of the base is fixedly connected with a housing. A transmission wheel is arranged horizontally inside the housing. A transmission belt is sleeved outside the transmission wheel. The top side wall of the housing is fixedly connected with a positioning plate. A wedge block is slidably connected to the inner side wall of the positioning plate. A limiting bottom plate is arranged at the right end of the positioning plate. The present invention realizes automatic positioning by conveying the door body through the transmission belt, and at the same time realizes the clamping and positioning of the door body by the limiting top plate and the limiting bottom plate through the movement of the wedge block driven by the contact between the door body and the wedge block, significantly improving the grinding accuracy of the weld. The rotation of the roller realizes the grinding of the weld in the connection area between the first and second grinding discs and the door body. At the same time, the position of the grinding disc is controlled by the third and fourth electromagnets to achieve the effect of precise grinding, solving the problem of difficult grinding in the dead corner area of the existing door body connection.

[0003] Currently, for the existing weld grinding device, when grinding a steel door, it can only process the welds located in the flat parts and cannot grind the corner parts of the steel door at a certain angle. At this time, manual grinding of the corner parts is required, increasing the labor burden of the personnel. In addition, although polishing liquid is added during the grinding process, there are still problems that the contact part between the grinding disc and the weld cannot be cooled and the debris generated during grinding cannot be processed, resulting in an increase in the wear amount of the grinding disc and scratches on the weld after grinding. The generation of scratches will cause cracks in the weld, affecting the stability of the steel door.

[0004] How to invent a grinding device for grinding the surface of a weld to improve these problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] To make up for the above deficiencies, the present invention provides a grinding device for grinding the surface of a weld, aiming to improve the problems that the corner parts of a steel door cannot be ground and the debris is not fully processed during grinding, resulting in scratches on the weld.

[0006] The present invention is implemented as follows:

[0007] The present invention provides a grinding device for grinding the surface of a weld, including a main body, and further including:

[0008] The grinding mechanism is installed at the end of the body. The grinding mechanism includes a grinding head, a communication hole, and a fan blade. The end of the communication hole is in the form of a funnel to enable a cutting function. The fan blade is provided to blow air for cooling and blow out debris at the fitting part between the weld seam and the grinding mechanism through the communication hole during grinding.

[0009] The calibration mechanism is installed on the body and is used to adjust the fitting degree between the grinding mechanism and the corner according to the angle of the corner of the steel door. The calibration mechanism has scales to display the corner angle.

[0010] The lubrication mechanism has its output end facing the end of the grinding head.

[0011] The sliding mechanism is installed inside the calibration mechanism to provide power for the operation of the lubrication mechanism.

[0012] Preferably, the grinding mechanism further includes a motor and a rotating shaft. The output end of the motor is fixedly connected to one end of the rotating shaft. The end of the rotating shaft far from the motor is inserted into the middle of the plane of the grinding head. The fan blade is installed inside the grinding head. The communication hole is opened on the grinding head and is arranged in an annular array along the central axis of the grinding head. The grinding head is set as a frustum shape.

[0013] Preferably, the calibration mechanism includes a fitting box, an adjusting plate, a fixing knob, and a sliding groove. The opposite sides of the fitting box are fixedly connected to one end of the adjusting plate. The top and the inner side wall of the adjusting plate are in contact with the fixing knob. The inner side wall of the sliding groove is slidably connected to the outer side wall of the adjusting plate. The fixing knob is installed at the middle position of the inner side wall of the sliding groove. The sliding groove is opened on the body. [[ID=I6]]

[0014] Preferably, the sliding mechanism includes a roller, a rotating rod, a reciprocating lead screw, and a limiting ring. The inner side wall of the roller is fixedly connected to the outer side wall of the rotating rod. The end of the rotating rod is fixedly connected to the end of the reciprocating lead screw. The outer side wall of the reciprocating lead screw is fixedly connected to the inner side wall of the roller. The limiting ring is fixedly connected to the connecting part of the reciprocating lead screw and the rotating rod.

[0015] Preferably, the lubrication mechanism includes a push-pull plate, a piston, a transfer box, a liquid injection pipe, and an infusion pipe. One side of the push-pull plate is fixedly connected to one end of the piston. The outer side wall of the end of the piston far from the push-pull plate is slidably connected to and in contact with the inner side wall of the transfer box. One end of the transfer box is fixedly connected to the end of the liquid injection pipe. One end of the transfer box is fixedly connected to one end of the infusion pipe.

[0016] Preferably, a handle is fixedly connected to the body. A grip is fixedly connected to the end of the body far from the grinding mechanism. Liquid boxes are fixedly connected to both sides of the body.

[0017] Preferably, the end of the rotating rod far from the reciprocating lead screw is rotatably connected to the inner side wall of the fitting box. The end of the reciprocating lead screw far from the rotating rod is rotatably connected to the inner side wall of the fitting box.

[0018] Preferably, the liquid injection pipe is the output end of the lubricating mechanism, and the liquid injection pipe is facing the flat part of the grinding head. One end of the transfer box close to the liquid injection pipe is fixedly connected to the inner side wall of the fitting box. The end of the liquid delivery pipe away from the transfer box is fixedly connected to the liquid box. The push-pull plate is connected to the outer side wall of the reciprocating lead screw through threads.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A grinding device for grinding the surface of a weld seam proposed by the present invention changes the structure of the existing grinding head. A fan blade and a communication hole are added inside the existing grinding head. The addition of the fan blade enables the grinding head to generate gas blowing towards the weld seam when rotating. This gas blows towards the fitting part between the grinding head and the weld seam through the communication hole. And one end of the communication hole located on the outer surface of the grinding head is set in a funnel shape, so that the communication hole not only has the function of blowing air, but also can generate a cutting force on the weld seam, realizing effective cooling between the grinding head and the weld seam, and can also blow away the debris at the fitting part between the grinding head and the weld seam, preventing scratches on the weld seam caused by the existence of debris, and improving the stability of the steel door.

[0021] 2. A grinding device for grinding the surface of a weld seam proposed by the present invention drives the lubricating mechanism to intermittently spray polishing liquid towards the grinding mechanism through the operation of the sliding mechanism in contact with the steel door. And the polishing liquid is atomized under the action of the rotation of the fan blade. When the atomized polishing liquid blows towards the outer surface of the grinding head through the communication hole, it can quickly take away the temperature of the grinding head, and the atomized polishing liquid can better enter the contact part between the grinding head and the weld seam. In addition, when the lubricating mechanism does not spray the polishing liquid, at this time the fan blade will perform the air blowing operation. In this way, on the one hand, the usage amount of the polishing liquid is saved, and on the other hand, it is prevented that too much polishing liquid causes the random movement of abrasive particles on the hard surface and leaves imprints on the weld seam surface, resulting in cracks in the weld seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is a three-dimensional structure schematic diagram of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0024] Figure 2 is a three-dimensional top structure schematic diagram of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a three-dimensional partial cross-section of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a middle cross-section of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a three-dimensional structure of a grinding mechanism and a calibration mechanism of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of a three-dimensional structure of a sliding mechanism and a lubrication mechanism of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram showing the corner grinding state of a grinding device for grinding the surface of a weld seam provided by an embodiment of the present invention.

[0030] In the figure: 1, body; 2, handle; 3, grip; 4, liquid tank; 5, calibration mechanism; 51, fitting box; 52, adjusting plate; 53, fixing button; 54, sliding groove; 6, grinding mechanism; 61, motor; 62, rotating shaft; 63, grinding head; 64, communication hole; 65, fan blade; 7, sliding mechanism; 71, roller; 72, rotating rod; 73, reciprocating lead screw; 74, limiting ring; 8, lubrication mechanism; 81, push-pull plate; 82, piston; 83, transfer box; 84, liquid injection pipe; 85, infusion pipe. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] Example 1

[0033] Referring to Figures 1-7 , a grinding device for grinding the surface of a weld seam, including a body 1, further including:

[0034] A calibration mechanism 5, a grinding mechanism 6, a sliding mechanism 7 and a lubrication mechanism 8;

[0035] The calibration mechanism 5 is installed on the main body 1 and is used to adjust the fitting degree between the grinding mechanism 6 and the corner according to the angle of the corner of the steel door. There is a scale on the calibration mechanism 5, which can display the corner angle;

[0036] The grinding mechanism 6 is installed at the end position of the main body 1. The grinding mechanism 6 includes a grinding head 63, a communication hole 64 and a fan blade 65; the end of the communication hole 64 is set in a funnel form. The funnel-shaped communication hole 64 has a cutting function to ensure the smoothness of the weld grinding. The fan blade 65 is arranged to blow air for cooling and blow out debris to the fitting part between the weld and the grinding mechanism 6 through the communication hole 64 during grinding. The grinding head 63 is set in a frustum shape;

[0037] The sliding mechanism 7 is installed inside the calibration mechanism 5 to provide power for the operation of the lubrication mechanism 8, and the output end of the lubrication mechanism 8 faces the flat part of the grinding head 63.

[0038] Furthermore, the grinding mechanism 6 further includes a motor 61 and a rotating shaft 62; the output end of the motor 61 is fixedly connected to one end of the rotating shaft 62. The end of the rotating shaft 62 away from the motor 61 is inserted into the middle of the flat surface of the grinding head 63. The fan blade 65 is installed inside the grinding head 63, and the communication hole 64 is opened on the grinding head 63 and is arranged in an annular array along the central axis of the grinding head 63.

[0039] It should be noted that through the setting of the above structure, the structure of the existing grinding head 63 is changed. A fan blade 65 and a communication hole 64 are added inside the existing grinding head 63. The addition of the fan blade 65 enables the grinding head 63 to generate gas blowing towards the weld when rotating. This gas blows towards the fitting part between the grinding head 63 and the weld through the communication hole 64. And the end of the communication hole 64 located on the outer surface of the grinding head 63 is set in a funnel shape, so that the communication hole 64 not only has a blowing function, but also can generate a cutting force on the weld, realizing effective cooling between the grinding head 63 and the weld, and can also blow the debris at the fitting part between the grinding head 63 and the weld to prevent scratches on the weld caused by the existence of debris, improving the stability of the steel door.

[0040] Furthermore, the calibration mechanism 5 includes a fitting box 51, an adjusting plate 52, a fixing button 53 and a sliding groove 54; the opposite sides of the fitting box 51 are fixedly connected to one end of the adjusting plate 52. The top and inner side walls of the adjusting plate 52 are in contact with the fixing button 53. The inner side wall of the sliding groove 54 is slidably connected to the outer side wall of the adjusting plate 52. The fixing button 53 is installed at the middle position of the inner side wall of the sliding groove 54. The sliding groove 54 is opened on the main body 1.

[0041] On the basis of the previous scheme, a handle 2 is fixedly connected to the main body 1, a grip 3 is fixedly connected to the end of the main body 1 away from the grinding mechanism 6, and liquid tanks 4 are fixedly connected to both sides of the main body 1.

[0042] The working principle of a grinding device for grinding the surface of a weld:

[0043] During use, first adjust the angle of the calibration mechanism 5 according to the angle of the corner of the steel door, so that the calibration mechanism 5 can fit on the steel door, and use a grinding head 63 with the same angle according to the angle indicated by the fixing knob 53;

[0044] Then, the fitting box 51 can be fitted with the steel door, and the outer surface of the grinding head 63 is made to fit with the weld. At this time, the motor 61 can be started, and hold the handle 2 and the grip 3 to grind the weld. The rotation of the motor 61 will drive the rotation of the rotating shaft 62, which in turn drives the rotation of the grinding head 63. The rotation of the grinding head 63 will draw in outside air through the fan blade 65 and blow it through the communication hole 64 towards the fitting part of the grinding head 63 and the weld, as Figure 7 shown. And since the end of the communication hole 64 is funnel-shaped, the end of the communication hole 64 is inclined relative to the weld at this time. Therefore, a cutting force can be generated on the weld, increasing the roughness of the grinding head 63 while improving the grinding effect on the weld. And due to the continuous rotation and blowing of the fan blade 65, effective cooling of the contact part between the grinding head 63 and the weld can be achieved, preventing the weld from generating bubbles due to a relatively high internal temperature. The generation of bubbles will cause cracks in the weld, improving the stability of the weld, and thus ensuring the stability of the steel door after welding.

[0045] Embodiment 2

[0046] Furthermore, the sliding mechanism 7 includes a roller 71, a rotating rod 72, a reciprocating lead screw 73, and a limiting ring 74; the inner side wall of the roller 71 is fixedly connected to the outer side wall of the rotating rod 72, the end of the rotating rod 72 is fixedly connected to the end of the reciprocating lead screw 73, the outer side wall of the reciprocating lead screw 73 is fixedly connected to the inner side wall of the roller 71, and the limiting ring 74 is fixedly connected to the connecting part of the reciprocating lead screw 73 and the rotating rod 72.

[0047] It should be noted that through the setting of the above structure, the grinding head 63 can always fit on the weld part, and it can also make the device move and grind more conveniently, thereby improving the convenience of grinding.

[0048] Furthermore, the lubrication mechanism 8 includes a push-pull plate 81, a piston 82, a transfer box 83, a liquid injection pipe 84, and a liquid infusion pipe 85; one side of the push-pull plate 81 is fixedly connected to one end of the piston 82, the outer side wall of the end of the piston 82 away from the push-pull plate 81 is slidably connected and mutually attached to the inner side wall of the transfer box 83, one end of the transfer box 83 is fixedly connected to the end of the liquid injection pipe 84, and one end of the transfer box 83 is fixedly connected to one end of the liquid infusion pipe 85.

[0049] It should be noted that the liquid infusion tube 85 is of one-way type, and the polishing liquid can only enter the transfer box 83 through the liquid tank 4. In addition, the liquid injection tube 84 is also of one-way type, and the polishing liquid in the transfer box 83 can only be sprayed through the liquid injection tube 84.

[0050] As a further solution of the present invention, one end of the rotating rod 72 away from the reciprocating screw rod 73 is rotatably connected to the inner wall of the bonding box 51, and the other end of the reciprocating screw rod 73 away from the rotating rod 72 is rotatably connected to the inner wall of the bonding box 51.

[0051] As a further solution of the present invention, the injection tube 84 is the output end of the lubrication mechanism 8, and the injection tube 84 is facing the planar part of the grinding head 63. The end of the transfer box 83 close to the injection tube 84 is fixedly connected to the inner wall of the bonding box 51, and the end of the infusion tube 85 away from the transfer box 83 is fixedly connected to the liquid tank 4. The push-pull plate 81 is connected to the outer wall of the reciprocating screw 73 by a thread.

[0052] The working principle of a grinding device for grinding the weld surface:

[0053] On the basis of the working principle of embodiment 1, when the mobile grinding head 63 is moving to grind the weld, since the roller 71 is attached to the steel door, the roller 71 will rotate, driving the rotating rod 72 and the reciprocating screw 73 to rotate, and the rotation of the reciprocating screw 73 will drive the push-pull plate 81 to push and pull the piston 82 back and forth to slide in the transfer box 83, so that the transfer box 83 will extract the polishing liquid in the liquid tank 4 through the infusion tube 85, and inject the polishing liquid into the position where the fan blade 65 is located through the injection tube 84. When injected into the position where the fan blade 65 is located, the polishing liquid is atomized under the action of the rotation of the fan blade 65, and the atomized polishing liquid is connected to the When the hole 64 blows toward the outer surface of the grinding head 63, it can quickly take away the temperature generated by the grinding of the grinding head 63, and the atomized polishing liquid can better enter the contact area between the grinding head 63 and the weld for good lubrication. In addition, when the injection pipe 84 is not spraying polishing liquid, the fan blade 65 will perform a blowing operation, and so on. On the one hand, it saves the amount of polishing liquid, and on the other hand, it prevents excessive polishing liquid from causing the grinding particles to move randomly on the weld and leave marks on the weld surface, causing cracks in the weld, thereby ensuring the beauty of the weld, ensuring the stability of the weld, and thus ensuring the stability of the steel door.

[0054] It should be noted that the specific model and specifications of the motor 61 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A grinding device for grinding the surface of a weld seam, comprising a main body (1), characterized in that, Also included are: A grinding mechanism (6) installed at the end of the main body (1). The grinding mechanism (6) includes a grinding head (63), a communication hole (64), and a fan blade (65). The end of the communication hole (64) is in the form of a funnel to enable a cutting function. The fan blade (65) is provided to blow air for cooling and blow out debris to the fitting part between the weld and the grinding mechanism (6) through the communication hole (64) during grinding. The fan blade (65) is installed inside the grinding head (63). The communication hole (64) is opened on the grinding head (63) and is arranged in an annular array along the central axis of the grinding head (63). The grinding head (63) is in the shape of a frustum of a cone. A calibration mechanism (5) installed on the main body (1) for adjusting the fitting degree between the grinding mechanism (6) and the corner according to the angle of the corner of the steel door. The calibration mechanism (5) has scales and can display the corner angle. The calibration mechanism (5) includes a fitting box (51), an adjustment plate (52), a fixing button (53), and a sliding groove (54). The opposite sides of the fitting box (51) are fixedly connected to one end of the adjustment plate (52). The top and inner side wall of the adjustment plate (52) are in contact with the fixing button (53). The inner side wall of the sliding groove (54) is slidably connected to the outer side wall of the adjustment plate (52). The fixing button (53) is installed at the middle position of the inner side wall of the sliding groove (54). The sliding groove (54) is opened on the main body (1). Liquid boxes (4) are fixedly connected to both sides of the main body (1). A lubrication mechanism (8). The output end of the lubrication mechanism (8) faces the end of the grinding head (63). The lubrication mechanism (8) includes a push-pull plate (81), a piston (82), a transfer box (83), a liquid injection pipe (84), and an infusion pipe (85). One side of the push-pull plate (81) is fixedly connected to one end of the piston (82). The outer side wall of the end of the piston (82) away from the push-pull plate (81) is slidably connected and in contact with the inner side wall of the transfer box (83). One end of the transfer box (83) is fixedly connected to the end of the liquid injection pipe (84). One end of the transfer box (83) is fixedly connected to one end of the infusion pipe (85). The liquid injection pipe (84) is the output end of the lubrication mechanism (8) and faces the flat part of the grinding head (63). One end of the transfer box (83) close to the liquid injection pipe (84) is fixedly connected to the inner side wall of the fitting box (51). The end of the infusion pipe (85) away from the transfer box (83) is fixedly connected to the liquid box (4). The push-pull plate (81) is threadedly connected to the outer side wall of the reciprocating lead screw (73). The sliding mechanism (7) is installed inside the calibration mechanism (5) and is used to provide power for the operation of the lubrication mechanism (8). The sliding mechanism (7) includes a roller (71), a rotating rod (72), a reciprocating lead screw (73) and a limiting ring (74); the inner side wall of the roller (71) is fixedly connected to the outer side wall of the rotating rod (72), the end of the rotating rod (72) is fixedly connected to the end of the reciprocating lead screw (73), the outer side wall of the reciprocating lead screw (73) is fixedly connected to the inner side wall of the roller (71), the limiting ring (74) is fixedly connected to the connecting part of the reciprocating lead screw (73) and the rotating rod (72), the end of the rotating rod (72) away from the reciprocating lead screw (73) is rotatably connected to the inner side wall of the fitting box (51), and the end of the reciprocating lead screw (73) away from the rotating rod (72) is rotatably connected to the inner side wall of the fitting box (51).

2. The grinding device for grinding the surface of a weld seam according to claim 1, wherein, The grinding mechanism (6) further includes a motor (61) and a rotating shaft (62); the output end of the motor (61) is fixedly connected to one end of the rotating shaft (62), and the end of the rotating shaft (62) away from the motor (61) is inserted into the middle of the plane of the grinding head (63).

3. A grinding device for grinding the surface of a weld seam according to claim 1, characterized in that, A handle (2) is fixedly connected to the body (1), and a grip (3) is fixedly connected to one end of the body (1) away from the grinding mechanism (6).

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