Positioning and clamping device for metal pipe fitting machining

Abstract

The utility model relates to the technical field of pipe fitting clamping, and discloses a positioning and clamping device for metal pipe fitting machining, which comprises a clamp holder, a casing, a motor, a hydraulic press and a controller. Therefore, the controller drives the output end of the hydraulic press through an electric signal to drive the movable rod to vertically stretch out and draw back, the position, tangent to the metal pipe fitting, of the clamping plate abuts against the outer side of the pipe fitting, the clamping plate is driven to clamp the pipe fitting in a V-shaped mode, and the metal pipe fitting is in a static and clamped state. At the moment, the clamping plates tangent to the two sides of the pipe reversely loosen the abutting force under the movement of the movable rod, it is ensured that the pipe cannot move under the vertical limitation of the clamping plates, and pipe position deviation caused by movement during clamping is prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipe clamping technology, specifically a positioning and clamping device for processing metal pipes. Background Technology

[0002] Metal pipe fittings require automated transfer during processing, typically using robotic arms. These robotic arms need clamping devices to hold the pipe fittings, facilitating the transfer of round pipe fittings. Existing invention patent publication number CN105058092B describes a pipe fitting clamping and rotating device. This device uses a gripper matched to the pipe fitting's size and rotates a screw to position the pipe fitting to meet processing requirements. Typically, a mechanical gripper is used to clamp the pipe fitting at a designated location. However, the gripper usually clamps the pipe fitting at a significant angle, often needing to cover the entire circumference of the fitting. During gripping or releasing, the lower half of the pipe fitting needs to be gripped, which can easily cause movement and displacement of the pipe fitting, potentially leading to positional deviations from the designated location. Utility Model Content

[0003] This invention provides a positioning and clamping device for processing metal pipe fittings, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A positioning and clamping device for processing metal pipe fittings includes a clamp, a housing, a motor, a hydraulic actuator, and a controller. The output end of the motor is located in the housing, the controller is located on the side of the housing, the motor is electrically connected to the controller, and the hydraulic actuator is located inside the housing, with its output end driving the clamp to move.

[0006] The clamp is equipped with a movable rod, a fixed rod, clamping plates, and a laser sensor. The fixed rod is located at the lower end of the housing. There are two clamping plates, which are respectively connected to the lower ends of the two fixed rods and can rotate movably. The movable rod is attached to the upper end of the clamping plates, and the upper end of the movable rod is connected to the vertical output end of the hydraulic device. The laser sensor passes through the movable rod and is electrically connected to the controller. The laser sensor is equipped with a distance sensor. When the laser sensor touches the uppermost end of the metal pipe, the clamping plates on both sides are tangent to the two sides of the metal pipe, and the hydraulic device is driven to extend and retract by electrical signal. The movable rod moves downward, so that the two clamping plates synchronously move inward to form a "V" shape for clamping.

[0007] A preferred technical solution: The movable rod is provided with a round tube, a rubber plate and a guide groove. The rubber plate is symmetrically arranged on both sides of the lower end of the round tube and is attached to the upper end of the clamping plate. The laser sensor wire interface passes through the guide groove in the middle of the round tube and connects to the controller. When the output end of the hydraulic device drives the round tube to extend or retract, the round tube is parallel to the lowest end of the fixed rod and squeezes the rubber plate outward, so that the two clamping plates clamp inward.

[0008] A preferred technical solution: The clamping plate is provided with a limiting plate, a rotating rod, a friction strip and a locking plate. The rotating rod passes through the interior of the limiting plate and is fixed to the lower end of the fixing rod. The rubber plate is pressed outward at the upper end of the limiting plate. The limiting plate is provided with a locking plate at the outer position of the rotating rod. The locking plate is provided with a notch. The notch corresponds to the protruding part of the rotating rod and blocks it. The limiting plate rotates 20° towards the clamping plate with the rotating rod as the center.

[0009] A preferred technical solution: The friction strip is made of rubber and is located at the lower position of the rotating rod. When the limiting plate is stationary, it is in a vertical state, and the distance between the two limiting plates is the diameter of the metal pipe. The friction strips on the inner sides of the two limiting plates are tangent to the symmetrical sides of the metal pipe. When the limiting plate rotates and clamps, the friction strips press against the sides of the metal pipe.

[0010] A preferred technical solution: The friction strip is hollow inside, and when the friction strip abuts against both sides of the pipe, the metal pipe of the friction strip is pressed in an arc shape.

[0011] Compared with existing technologies, this technical solution has the following advantages:

[0012] In this invention, when the laser sensor detects that the distance to the pipe is zero, the clamping plate is tangential to both sides of the metal pipe. The controller's electrical signal drives the output end of the hydraulic device to vertically extend and retract the movable rod, causing the clamping plate to press against the outside of the pipe at the position tangential to the metal pipe. This causes the clamping plate to form a "V"-shaped clamp on the pipe. At this time, the metal pipe is in a static clamped state. The clamping plates tangential to both sides of the pipe release the pressure in the opposite direction under the movement of the movable rod, and the vertical constraint of the clamping plate ensures that the pipe will not move, preventing the pipe from deviating in position due to movement during clamping.

[0013] In this invention, the limiting plate is pressed outward from the upper end, causing it to rotate 20°. At this time, the rotational force is an outward elastic compressive force. When the limiting plate rotates, the friction strip abuts against both sides of the metal pipe. Under the pressure of the friction strip against the metal pipe, the pipe is pressed and fixed by the friction strip. When the diameter of the metal pipe and the distance between the two limiting plates are the same, the limiting plate will not rotate. Instead, it will convert the rotational force into a pressure against both sides of the metal pipe. At this time, the limiting plate is still tangent to both sides of the pipe. The friction strip is recessed into a slight arc shape by the pressure of rotation, which forms a certain frictional resistance force for the pipe and limits the metal pipe to be pressed and clamped, preventing the tangential clamping force from easily becoming unbalanced and sliding. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is an overall diagram of the utility model.

[0016] Figure 2 This is a side view of the clamp.

[0017] Figure 3 This is a three-dimensional schematic diagram of the movable rod.

[0018] Figure 4 This is a three-dimensional schematic diagram of the clamping plate.

[0019] In the diagram: clamp-1, housing-2, motor-3, hydraulic device-4, controller-5, movable rod-11, fixed rod-12, clamping plate-13, laser sensor-14, round tube-111, rubber plate-112, guide groove-113, limiting plate-131, rotating rod-132, friction strip-133, clamping plate-134. Detailed Implementation

[0020] like Figures 1 to 4 As shown, this utility model proposes a positioning and clamping device for processing metal pipe fittings, including a clamp 1, a housing 2, a motor 3, a hydraulic device 4, and a controller 5. The output end of the motor 3 is located on the housing 2, the controller 5 is located on the side of the housing 2, the motor 3 is electrically connected to the controller 5, the hydraulic device 4 is located inside the housing 2, and the output end of the hydraulic device 4 drives the clamp 1 to move.

[0021] The clamp 1 is equipped with a movable rod 11, a fixed rod 12, a clamping plate 13, and a laser sensor 14. The fixed rod 12 is located at the lower end of the housing 2. There are two clamping plates 13, which are respectively connected to the lower ends of the two fixed rods 12 and rotate movably. The movable rod 11 is attached to the upper end of the clamping plate 13. The upper end of the movable rod 11 is connected to the vertical output end of the hydraulic device 4. The laser sensor 14 passes through the movable rod 11 and is electrically connected to the controller 5. The laser sensor 14 is equipped with a distance sensor. When the laser sensor 14 touches the uppermost end of the metal pipe, the clamping plates 13 on both sides are tangent to the two sides of the metal pipe, and the hydraulic device 4 is driven to extend and retract by electrical signal. The movable rod 11 moves downward, so that the two clamping plates 13 synchronously move inward in a "V" shape to clamp.

[0022] Furthermore, the upper end of the motor 3 is connected to an external robotic arm, which moves to the designated position of the metal pipe and rotates the motor 3 to clamp the lower end of the housing 2 on both sides of the metal pipe.

[0023] The movable rod 11 is provided with a circular tube 111, a rubber plate 112 and a guide groove 113. The rubber plate 112 is symmetrically arranged on both sides of the lower end of the circular tube 111 and is attached to the upper end of the clamping plate 13. The wire interface of the laser sensor 14 passes through the guide groove 113 in the middle of the circular tube 111 and is connected to the controller 5. When the output end of the hydraulic device 4 drives the circular tube 111 to extend or retract, the circular tube 111 is parallel to the lower end of the fixed rod 12 and squeezes the rubber plate 112 outward, so that the two clamping plates 13 clamp inward.

[0024] In this invention, the housing 2 is vertically lowered by an external robotic arm, and the distance to the uppermost part of the metal pipe is vertically monitored by the laser sensor 14. When the laser sensor 14 detects that the distance to the pipe is zero, the clamping plate 13 cuts into both sides of the metal pipe. At this time, the metal pipe is in a static state, and the controller 5 drives the output end of the hydraulic device 4 to vertically extend and retract the movable rod 11, causing the movable rod 11 to press down on the rubber plate 112. Then, the movable rod 11 elastically moves outward at the upper end of the clamping plate 13, so that the clamping plate 13 presses against the pipe at the position tangent to the metal pipe. The outer side of the component is moved, thereby driving the clamping plate 13 to form a "V" shape clamping on the component. At this time, the metal component is in a static clamping state, and the clamping position is located on both sides of the metal component. Therefore, under the positioning of the laser sensor 14, the metal component is kept in a static state and positioned and clamped. When the component is released, it is released after it is against the designated position. At this time, the clamping plate 13 tangent to both sides of the component is released in the opposite direction under the movement of the movable rod 11, and the vertical limitation of the clamping plate 13 ensures that the component will not move, preventing the movement during clamping from causing the component position deviation.

[0025] The clamping plate 13 is provided with a limiting plate 131, a rotating rod 132, a friction strip 133, and a locking plate 134. The rotating rod 132 passes through the interior of the limiting plate 131 and is fixed to the lower end of the fixing rod 12. The rubber plate 112 is pressed outward at the upper end of the limiting plate 131. The limiting plate 131 is provided with a locking plate 134 at the outer position of the rotating rod 132. The locking plate 134 is provided with a notch, which corresponds to the protruding part of the rotating rod 132 and blocks it. The limiting plate 131 rotates 20° towards the clamping plate 13 with the rotating rod 132 as the center.

[0026] Furthermore, the friction strip 133 is made of rubber and is located at the lower position of the rotating rod 132. When the limiting plate 131 is stationary, it is in a vertical state, and the distance between the two limiting plates 131 is the diameter of the metal pipe. The friction strips 133 on the inner side of the two limiting plates 131 are tangent to the symmetrical sides of the metal pipe. When the limiting plate 131 rotates and clamps, the friction strips 133 press against the sides of the metal pipe.

[0027] Furthermore, the friction strip 133 is hollow inside, and when the friction strip 133 abuts against both sides of the pipe, the metal pipe of the friction strip 133 is pressed into an arc shape.

[0028] In this invention, the limiting plate 131 is pressed outward by the upper end 122, causing the limiting plate 131 to rotate 20°. At this time, the rotational force is the elastic extrusion force of 122. When the limiting plate 131 rotates, the friction strip 133 abuts against both sides of the metal pipe. Under the pressure of the friction strip 133 against the metal pipe, the pipe is pressed and fixed by the position of the friction strip 133. When the diameter of the metal pipe and the distance between the two limiting plates 131 are the same, the limiting plate 131 will not rotate. Instead, it will convert the rotational force into a pressure against both sides of the metal pipe. At this time, the limiting plate 131 is still tangent to both sides of the pipe. The pressure of rotation causes the friction strip 133 to indent and form a slight arc, which forms a certain frictional resistance force for the pipe and limits the metal pipe to be clamped and prevents the tangential clamping force from easily becoming unbalanced and sliding.

[0029] The above description is merely a preferred embodiment of this utility model, and therefore cannot be used to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of this utility model and the contents of the specification should still fall within the scope of this utility model.

Claims

1. A positioning and clamping device for processing metal pipe fittings, characterized in that, The device includes a clamp (1), a housing (2), a motor (3), a hydraulic actuator (4), and a controller (5). The output end of the motor (3) is located on the housing (2). The controller (5) is located on the side of the housing (2). The motor (3) is electrically connected to the controller (5). The hydraulic actuator (4) is located inside the housing (2), and the output end of the hydraulic actuator (4) drives the clamp (1) to move. The clamp (1) is provided with a movable rod (11), a fixed rod (12), a clamping plate (13), and a laser sensor (14). The fixed rod (12) is located at the lower end of the housing (2). There are two clamping plates (13), which are connected to the lower ends of the two fixed rods (12) and rotate. The movable rod (11) is attached to the upper end of the clamping plate (13). The upper end of the movable rod (11) is connected to the vertical output end of the hydraulic device (4). The laser sensor (14) passes through the movable rod (11) and is electrically connected to the controller (5). The laser sensor (14) is provided with a distance sensor. When the laser sensor (14) touches the uppermost end of the metal pipe, the clamping plates (13) on both sides are tangent to the two sides of the metal pipe and the hydraulic device (4) is driven to extend and retract by an electrical signal. The movable rod (11) moves downward, so that the two clamping plates (13) move inward in a "V" shape.

2. The positioning and clamping device for processing metal pipe fittings according to claim 1, characterized in that, The movable rod (11) is provided with a round tube (111), a rubber plate (112) and a guide groove (113). The rubber plate (112) is symmetrically arranged on both sides of the lower end of the round tube (111) and the rubber plate (112) is attached to the upper end of the clamping plate (13). The wire interface of the laser sensor (14) passes through the guide groove (113) in the middle of the round tube (111) and connects to the controller (5) outward. When the output end of the hydraulic device (4) drives the round tube (111) to extend and retract, the round tube (111) is parallel to the lower end of the fixed rod (12) and squeezes the rubber plate (112) outward, so that the two clamping plates (13) clamp inward.

3. The positioning and clamping device for processing metal pipe fittings according to claim 2, characterized in that, The clamping plate (13) is provided with a limiting plate (131), a rotating rod (132), a friction strip (133) and a locking plate (134). The rotating rod (132) passes through the interior of the limiting plate (131) and is fixed to the lower end of the fixing rod (12). The rubber plate (112) is pressed outward at the upper end of the limiting plate (131). The limiting plate (131) is provided with a locking plate (134) on the outside of the rotating rod (132). The locking plate (134) is provided with a notch, which corresponds to the protruding part of the rotating rod (132) and blocks it. The limiting plate (131) rotates 20° towards the clamping plate (13) with the rotating rod (132) as the center.

4. The positioning and clamping device for processing metal pipe fittings according to claim 3, characterized in that, The friction strip (133) is made of rubber and is located at the lower position of the rotating rod (132). When the limiting plate (131) is stationary, it is in a vertical state, and the distance between the two limiting plates (131) is the diameter of the metal pipe. The friction strip (133) on the inner side of the two limiting plates (131) is tangent to the symmetrical sides of the metal pipe. When the limiting plate (131) rotates and clamps, the friction strip (133) presses against both sides of the metal pipe.

5. A positioning and clamping device for processing metal pipe fittings according to claim 4, characterized in that, The friction strip (133) is hollow inside. When the friction strip (133) is pressed against both sides of the pipe, the friction strip (133) presses the metal pipe in an arc shape.

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