Flow-adjustable mechanical hand oil cylinder

Abstract

This utility model discloses an adjustable flow rate robotic arm cylinder, including a cylinder body, a piston rod, end caps, and a control valve. Two end caps are connected to the two ends of the cylinder body, and the piston rod is slidably connected to the two end caps. A piston body that moves along the cylinder body is provided on the piston rod. An oil inlet and a mounting groove communicating with the cylinder body are provided on the outer side of the end cap. The control valve is fixed in the mounting groove, and a return oil port connected to the control valve is provided on the end face of the end cap facing the piston body. The control valve is installed in the mounting groove of the end cap of this adjustable flow rate robotic arm cylinder, and the mounting groove is connected to the return oil port, so that the hydraulic oil can flow back along the mounting groove and the control valve to the return oil port to be discharged to buffer the piston body. The control valve can adjust the flow rate of the hydraulic oil, so that the buffering effect of the hydraulic oil on the piston body can be adjusted as needed. In this way, the operator does not need to grind the end cap and piston to achieve the required clearance through continuous adjustment, which is convenient for processing and use.

Description

Technical fields:

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an adjustable flow rate hydraulic cylinder for robotic arms. Background technology:

[0002] In the aluminum rod forming process, aluminum rod material needs to be placed into an extruder and heated to a certain temperature. Then, a robotic arm cylinder drives the robotic arm to lift the aluminum rod material to complete the loading action, so that the aluminum rod can be pressed into the mold to form an aluminum rod of the corresponding shape and specifications. The robotic arm cylinder works in conjunction with a limit switch to control the loading action of the robotic arm. The existing robotic arm cylinder has oil ports on the end caps at both ends of the cylinder body, and hydraulic oil is supplied to the oil tank in the cylinder body through the oil ports to drive the piston to move along the cylinder body. When the piston moves to the position of the end cap, the hydraulic oil left in the gap between the piston and the inner side of the end cap buffers the piston. However, this requires high machining precision for the gap between the end cap and the piston, and the operator needs to grind the end cap and piston during continuous adjustment, which is inconvenient for processing and use. Therefore, a new type of robotic arm cylinder needs to be designed to solve the above problems. Utility Model Content:

[0003] To solve the above-mentioned technical problems, this utility model provides an adjustable flow manipulator cylinder with a control valve installed in the mounting groove of the end cap. The mounting groove is connected to the return port, so that the hydraulic oil can flow back along the mounting groove and the control valve to the return port for discharge to buffer the piston body. The control valve can adjust the flow rate of the hydraulic oil, so the buffering effect of the hydraulic oil on the piston body can be adjusted as needed. In this way, the operator does not need to grind the end cap and piston to achieve the required clearance through continuous adjustment, which is convenient for processing and use.

[0004] An adjustable flow rate robotic arm cylinder includes a cylinder body, a piston rod, end caps, and a control valve. Two end caps are connected to the two ends of the cylinder body respectively. The piston rod is slidably connected to the two end caps, and a piston body that moves along the cylinder body is provided on the piston rod. An oil inlet and a mounting groove communicating with the cylinder body are provided on the outer side of the end cap. The control valve is fixed in the mounting groove, and an oil return port connected to the control valve is provided on the end face of the end cap facing the piston body.

[0005] Preferably, the piston body includes a hydraulic cylinder piston and two cover pistons. The hydraulic cylinder piston is fixed on the piston rod and moves along the inner side of the cylinder body, and the two cover pistons are connected to the front and rear sides of the hydraulic cylinder piston respectively.

[0006] Preferably, the end cap has a piston groove on the side facing the piston body, and the mounting groove and the oil inlet are respectively connected to the piston groove.

[0007] Preferably, the end cap has a through hole in the middle, the piston rod is slidably connected to the through hole, and a sealing ring is provided in the through hole.

[0008] Preferably, the end cap is provided with an oil delivery groove, and the control valve is connected to the oil return port through the oil delivery groove.

[0009] The beneficial effects of this utility model are as follows: The adjustable flow manipulator cylinder, through the cooperation of the cylinder body, piston rod, end cover and control valve, allows the control valve to be installed in the mounting groove of the end cover, and the mounting groove is connected to the return oil port, so that the hydraulic oil can flow back along the mounting groove and control valve to the return oil port to discharge, thereby buffering the piston body. The control valve can adjust the flow rate of the hydraulic oil, so the buffering effect of the hydraulic oil on the piston body can be adjusted as needed. In this way, the operator does not need to grind the end cover and piston to achieve the required clearance through continuous adjustment, which is convenient for processing and use. Attached Figure Description

[0010] Appendix Figure 1 This is a schematic diagram of the adjustable flow rate robotic arm cylinder of this utility model;

[0011] Appendix Figure 2 This is a schematic diagram of the end cap structure in the adjustable flow rate robotic arm cylinder of this utility model;

[0012] Appendix Figure 3 for Figure 1 A magnified view of part A.

[0013] In the diagram: 1. Cylinder block, 2. Piston rod, 3. End cap, 4. Control valve, 5. Oil inlet, 6. Mounting groove, 7. Oil return port, 8. Cylinder piston, 9. Cover piston, 10. Piston groove, 11. Oil inlet groove. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so as to provide a clearer understanding of the technical concept claimed by the present invention.

[0015] like Figures 1 to 3 As shown, an adjustable flow rate robotic arm cylinder includes a cylinder body 1, a piston rod 3, an end cap 3, and a control valve 4. The two end caps 3 are connected to the two ends of the cylinder body 1 respectively. The piston rod 3 is slidably connected to the two end caps 3, and a piston body that moves along the cylinder body 1 is provided on the piston rod 3. An oil inlet 5 communicating with the cylinder body 1 and a mounting groove 6 are provided on the outer side of the end cap 3. The control valve 4 is fixed in the mounting groove 6, and an oil return port 7 connected to the control valve 4 is provided on the end face of the end cap 3 facing the piston body.

[0016] The working principle of the adjustable flow rate robotic arm cylinder described in this utility model is achieved through mutual cooperation, such as... Figure 1 and Figure 3 As shown, the end cap 3 is equipped with a control valve 4 in the mounting groove 6, and the mounting groove 6 is connected to the return port 7, so that the hydraulic oil can flow back along the mounting groove 6 and the control valve 4 to the return port 7 for discharge to buffer the piston body. The control valve 4 can adjust the flow rate of the hydraulic oil, so the buffering of the hydraulic oil on the piston body can be adjusted as needed. Even if the clearance requirement between the piston body and the end cap 3 is not met, the buffering requirement of the piston body can still be met. Compared with the traditional manipulator cylinder, this adjustable flow manipulator cylinder does not require the operator to grind the end cap 3 and the piston in the process of continuous adjustment to achieve the required clearance requirement, which is convenient for the operator to process and use.

[0017] Specifically, the piston body includes a hydraulic cylinder piston 8 and two cap pistons 9. The hydraulic cylinder piston 8 is fixed on the piston rod 3 and moves along the inner side of the cylinder body 1. The two cap pistons 9 are connected to the front and rear sides of the hydraulic cylinder piston 8 respectively. The end cap 3 has a piston groove 10 on the side facing the piston body. The mounting groove 6 and the oil inlet 5 are respectively connected to the piston groove 10. Further, the end cap 3 has a through hole in the middle, the piston rod 3 is slidably connected to the through hole, and a sealing ring is provided in the through hole. Even further, the end cap 3 has an oil delivery groove 11, and the control valve 4 is connected to the return oil port 7 through the oil delivery groove 11. Figures 1 to 3 As shown, the oil inlets 5 on the two end caps 3 can be connected to external oil pipes. Hydraulic oil is input into the oil inlet 5 of one end cap 3. After the hydraulic oil enters the cylinder body 1, it abuts against the cylinder piston 8 and the cover piston 9. The abutting cylinder piston 8 pushes the other cover piston 9 to move towards the other end cap 3. In this way, the other cover piston 9 forces the hydraulic oil in the cylinder body 1 to be discharged through the oil inlet 5 of the other end cap 3. The hydraulic oil can also enter the control valve 4 through the mounting groove 6. The control valve 4 can be a flow valve with a flow regulation function. The control valve 4 delivers the hydraulic oil to the return port 7 through the oil delivery groove 11 so that the hydraulic oil discharged from the return port 7 can supply hydraulic oil to the other end cap 3. The cover piston 9 is buffered, and the control valve 4 adjusts the flow rate of hydraulic oil discharged from the return port 7 to change the buffering size of the other cover piston 9. In addition, the cylinder piston 8 drives the piston rod 3 to move along the through hole. The operator can adjust the flow rate of the control valve 4 according to the change in the movement speed of the piston rod 3. The end cover 3 is provided with a mounting through groove 6, which can speed up the discharge speed of hydraulic oil between the other cover piston 9 and the through hole. When the cover piston 9 reaches the piston groove 10 of the end cover 3, the hydraulic oil between the cover piston 9 and the bottom of the piston groove 10 is discharged faster, which can reduce the pressure on the sealing ring (not shown in the figure) of the through hole and improve the service life of the sealing ring.

[0018] The above are merely specific embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flow adjustable robot cylinder, characterized by: The device includes a cylinder body, a piston rod, end caps, and a control valve. The two end caps are connected to the two ends of the cylinder body respectively. The piston rod is slidably connected to the two end caps, and a piston body that moves along the cylinder body is provided on the piston rod. The outer side of the end cap is provided with an oil inlet and a mounting groove that communicate with the cylinder body. The control valve is fixed in the mounting groove, and the end face of the end cap facing the piston body is provided with an oil return port that is connected to the control valve.

2. A flow adjustable manipulator cylinder according to claim 1, characterized in that: The piston body includes a hydraulic cylinder piston and two cover pistons. The hydraulic cylinder piston is fixed on the piston rod and moves along the inner side of the cylinder body. The two cover pistons are connected to the front and rear sides of the hydraulic cylinder piston respectively.

3. The flow-regulated manipulator cylinder of claim 1, wherein: The end cap has a piston groove on the side facing the piston body, and the mounting groove and oil inlet are respectively connected to the piston groove.

4. The flow-regulated manipulator cylinder of claim 1, wherein: The end cap has a through hole in the middle, the piston rod is slidably connected to the through hole, and a sealing ring is provided in the through hole.

5. The adjustable flow rate hydraulic cylinder for a robotic arm according to claim 1, characterized in that: An oil delivery groove is provided inside the end cap, and the control valve is connected to the oil return port through the oil delivery groove.

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