Balance cylinder for industrial robot

Abstract

The utility model provides a balance cylinder for an industrial robot, and relates to the technical field of balance cylinders, the balance cylinder comprises a cylinder body, two ends of the cylinder body are respectively provided with a lug ring, the side wall of each lug ring is provided with a lubricating oil filling assembly, one end of the cylinder body is provided with an oil inlet, and the joint of the oil inlet is provided with a filter assembly I; an oil return opening is formed in the other end of the cylinder body, a second filtering assembly is installed at the joint of the oil return opening, and a gap oil return opening is formed in the side wall of one end of the oil return opening of the cylinder body; the device can solve the problems that the service life of the balance cylinder is influenced and the maintenance cost of the balance cylinder is increased due to impurities and dirt in pressure liquid in the double-lug type hydraulic balance cylinder, and the use of the balance cylinder is seriously influenced due to the abrasion of balls caused by the fact that lubricating oil cannot be manually added into rolling bearings of lug rings in time.

Description

Technical Field

[0001] The utility model belongs to the field of a balancing cylinder, and more specifically, particularly relates to a balancing cylinder used for an industrial robot. Background Art

[0002] The main function of the industrial robot balance cylinder is to balance the torque generated by gravity on the two axes of the robot. In this way, the change of joint drive torque caused by gravity can be reduced, making the movement of the robot more stable.

[0003] At present, the types of balance cylinders used in industrial robots include spring balance cylinders, hydraulic balance cylinders, pneumatic balance cylinders, etc. Each type has its advantages and disadvantages. For example, when the mechanical parts are subjected to force, the balance cylinder control system will sense the force and inject pressure liquid into the hydraulic cylinder, using the pressure of the liquid to balance the force, so that the mechanical device remains in a stable state and reduces vibration and interference. Its application can effectively improve the operating efficiency of the equipment, reduce vibration and noise, but it also has disadvantages. The pressure liquid in the balance cylinder contains impurities and dirt, and the rolling bearings of the earrings cannot be manually lubricated in time.

[0004] Based on the above, the inventors found that the following problems exist: because the pressure liquid in the balancing cylinder contains impurities and dirt, the service life of the balancing cylinder is affected and the maintenance cost of the balancing cylinder is increased; the rolling bearing of the earring cannot be manually lubricated in time, resulting in ball wear that seriously affects the use of the balancing cylinder.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a balancing cylinder for an industrial robot is provided, in order to achieve a purpose with greater practical value. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a balancing cylinder for an industrial robot to solve the problems that the pressure liquid in the existing balancing cylinder contains impurities and dirt and the rolling bearing of the earring cannot be manually lubricated in time.

[0007] The purpose and effect of the balancing cylinder for an industrial robot of the utility model are achieved by the following specific technical means:

[0008] A balancing cylinder for an industrial robot comprises a cylinder body, earrings are respectively installed at both ends of the cylinder body, a lubricating oil filling assembly is installed on the side walls of the earrings, an oil inlet is opened at one end of the cylinder body, a filter assembly 1 is installed at the connection of the oil inlet, an oil return port is opened at the other end of the cylinder body, a filter assembly 2 is installed at the connection of the oil return port, and a gap oil return port is opened on the side wall of one end of the oil return port of the cylinder body.

[0009] Furthermore, the lubricating oil filling assembly includes a double-threaded connector, an oil hole is opened in the central portion of the double-threaded connector, and a sleeve is installed at one end of the double-threaded connector, a controller is installed at the bottom of the sleeve, and a piston is inserted and installed in the sleeve, an "L"-shaped oil hole is opened in the piston, and a side port is opened on the side wall of the piston.

[0010] Furthermore, both ends of the sleeve are provided with an internal thread, and the side wall of the sleeve is opened with a side hole, an annular sealing block is inserted in the side hole, and a telescopic rod is installed through the inner wall of the annular sealing block, a rubber block is installed at one end of the telescopic rod and passes through the inner wall of the side port to extend to the inside of the "L"-shaped oil hole, and a mounting seat is installed at the other end of the telescopic rod, and the mounting seat is fixedly installed to the outer wall of the annular sealing block.

[0011] Furthermore, the filter assembly includes a single-head sleeve, a "T"-shaped oil hole is opened inside the single-head sleeve, a "T"-shaped hole sealing plug is inserted at one end of the single-head sleeve, an internal thread 2 is opened at one end of the "T"-shaped hole sealing plug, and an annular filter is installed at the tail of the "T"-shaped hole sealing plug, a bottom plate is installed at the tail of the annular filter, a pressure spring is installed on the bottom plate, and a valve disc is installed on the top of the pressure spring.

[0012] Furthermore, bolts are installed on the single-head sleeve, and the single-head sleeve is fixedly connected to the "T"-shaped hole sealing plug by bolts.

[0013] Furthermore, a bearing is installed inside the earring, balls are installed on the bearing, and a lubricating oil inlet is opened on the side wall of the earring and extends between the balls.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Through the coordinated use of the "T"-shaped hole sealing plug, the pressure spring and the annular filter, when the pressurized liquid enters the "T"-shaped hole sealing plug, the pressure spring is compressed under the impact of the liquid, and the valve disc is pressed toward the annular filter. The liquid flows into the annular filter to filter out the impurities and dirt in the liquid. When the impurities in the annular filter reach a certain level, unscrew the bolts, take out the "T"-shaped hole sealing plug first, then take out the annular filter, replace or clean the annular filter, so that clean liquid flows into the balance cylinder.

[0016] 2. Through the coordinated use of the controller, telescopic rod and rubber block, the controller can be used to set and control the timing of the telescopic rod to extend and retract. When the telescopic rod is extended, the rubber block blocks the "L"-shaped oil hole. When the telescopic rod is retracted, the rubber block retracts, and the lubricating oil enters the "L"-shaped oil hole to add oil, so that the ball in the earring is regularly filled with lubricating oil, avoiding wear between the ball and the bearing caused by untimely manual refueling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a three-dimensional schematic diagram of a balancing cylinder for an industrial robot.

[0018] Figure 2 The utility model is a front view schematic diagram of a lubricating oil filling assembly of a balance cylinder for an industrial robot.

[0019] Figure 3 The utility model is a bottom view schematic diagram of a lubricating oil filling assembly of a balance cylinder for an industrial robot.

[0020] Figure 4 The utility model is a cross-sectional schematic diagram of a lubricating oil filling assembly of a balance cylinder for an industrial robot.

[0021] Figure 5 The utility model is a schematic cross-sectional view of a balancing cylinder earring for an industrial robot.

[0022] Figure 6 The utility model is a cross-sectional schematic diagram of a balance cylinder filter assembly for an industrial robot.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0024] 1. Cylinder body; 2. Earring; 3. Oil inlet; 4. Oil return port; 5. Clearance oil return port; 6. Sleeve; 7. Single-end sleeve; 8. Double-end threaded connector; 9. Piston; 10. Oil hole; 201. Lubricating oil inlet; 202. Ball; 203. Bearing; 601. Side hole; 602. Annular sealing block; 603. Mounting seat; 604. Telescopic rod; 605. Rubber block; 606. Controller; 607. Internal thread one; 701. "T"-shaped hole sealing plug; 702. Bolt; 703. Annular filter; 704. Bottom plate; 705. Pressure spring; 706. Valve disc; 707. Internal thread two; 708. "T"-shaped oil hole; 901. Side port; 902. "L"-shaped oil hole. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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 in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] As attached Figure 1 To Attachment Figure 6 As shown:

[0030] The utility model provides a balancing cylinder for an industrial robot, comprising a cylinder body 1, earrings 2 are respectively installed at both ends of the cylinder body 1, a lubricating oil filling assembly is installed on the side wall of the earring 2, an oil inlet 3 is opened at one end of the cylinder body 1, a filter assembly 1 is installed at the connection of the oil inlet 3, an oil return port 4 is opened at the other end of the cylinder body 1, a filter assembly 2 is installed at the connection of the oil return port 4, and a gap oil return port 5 is opened on the side wall of one end of the oil return port 4 of the cylinder body 1.

[0031] Among them, the lubricating oil filling assembly includes a double-headed threaded connector 8, an oil hole 10 is opened in the central part of the double-headed threaded connector 8, and a sleeve 6 is installed at one end of the double-headed threaded connector 8, and a controller 606 is installed at the bottom of the sleeve 6, which can be set to control the lubricating oil filling assembly to add lubricating oil to the ball 202 in the earring 2 at a fixed time, and a piston 9 is inserted and installed in the sleeve 6, and an "L"-shaped oil hole 902 is opened in the piston 9, and a side port 901 is opened on the side wall of the piston 9.

[0032] Among them, both ends of the sleeve 6 are provided with internal threads 607, and the side wall of the sleeve 6 is opened with a side hole 601, an annular sealing block 602 is inserted in the side hole 601, and a telescopic rod 604 is installed through the inner wall of the annular sealing block 602, and a rubber block 605 is installed at one end of the telescopic rod 604 and passes through the inner wall of the side port 901 to extend to the inside of the "L"-shaped oil hole 902. Through the extension and retraction of the telescopic rod 604, the rubber block 605 can block and release the "L"-shaped oil hole 902, and a mounting seat 603 is installed at the other end of the telescopic rod 604, and the mounting seat 603 is fixedly installed with the outer wall of the annular sealing block 602.

[0033] Among them, the filter component 1 includes a single-head sleeve 7, a "T"-shaped oil hole 708 is opened inside the single-head sleeve 7, a "T"-shaped hole sealing plug 701 is inserted at one end of the single-head sleeve 7, an internal thread 707 is opened at one end of the "T"-shaped hole sealing plug 701, and an annular filter 703 is installed at the tail of the "T"-shaped hole sealing plug 701, and a bottom plate 704 is installed at the tail of the annular filter 703, a pressure spring 705 is installed on the bottom plate 704, and a valve flap 706 is installed on the top of the pressure spring 705. The impact force of the liquid on the valve flap 706 is used to compress the pressure spring 705 and flow into the annular filter 703 for filtration, which is convenient for disassembly, replacement and cleaning.

[0034] Among them, a bolt 702 is installed on the single-head sleeve 7, and the single-head sleeve 7 is fixedly connected to the "T"-shaped hole sealing plug 701 through the bolt 702, which is convenient for disassembly of the "T"-shaped hole sealing plug 701.

[0035] A bearing 203 is installed inside the earring 2 , and balls 202 are installed on the bearing 203 . A lubricating oil inlet 201 is opened on the side wall of the earring 2 and extends to between the balls 202 .

[0036] The specific usage and function of this embodiment are as follows:

[0037] First, check the integrity of the equipment. It can be used only after confirmation. When in use, first set the time interval through the controller 606 to control the telescopic rod 604 to extend and retract regularly. When the telescopic rod 604 retracts, the rubber block 605 retracts, and the lubricating oil enters the "L"-shaped oil hole 902 and flows into the oil hole 10, and then flows into the lubricating oil inlet 201 to supply oil to the ball 202 in the earring 2. When the telescopic rod 604 extends, the rubber block 605 blocks the "L"-shaped oil hole 902 and stops supplying oil. When the balancing cylinder is working, the pressure liquid first enters the "T"-shaped hole seal. In the sealing plug 701, under the impact of liquid, the pressure spring 705 is compressed, and the valve disc 706 is pressed toward the annular filter 703. When the liquid flows into the annular filter 703, impurities and dirt mixed in the liquid are filtered out. When the impurities in the annular filter 703 reach a certain level, the bolt 702 is unscrewed, and the "T"-shaped hole sealing plug 701 is first taken out, and then the annular filter 703 is taken out, and the annular filter 703 is replaced or cleaned, so that clean liquid flows into the balancing cylinder, extending the service life of the balancing cylinder. The overall design of this device is novel and the structure is simple, so it is worthy of widespread promotion and use.

[0038] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A balancing cylinder for an industrial robot, comprising a cylinder body (1), characterized in that: Earrings (2) are respectively installed at both ends of the cylinder body (1), and a lubricating oil filling assembly is installed on the side wall of the earring (2). An oil inlet (3) is opened at one end of the cylinder body (1), and a filter assembly 1 is installed at the connection of the oil inlet (3). An oil return port (4) is opened at the other end of the cylinder body (1), and a filter assembly 2 is installed at the connection of the oil return port (4). A gap oil return port (5) is opened on the side wall of one end of the oil return port (4) of the cylinder body (1).

2. A balancing cylinder for an industrial robot as claimed in claim 1, characterized in that: The lubricating oil filling assembly comprises a double-threaded connector (8), an oil hole (10) is provided at the center of the double-threaded connector (8), a sleeve (6) is installed at one end of the double-threaded connector (8), a controller (606) is installed at the bottom of the sleeve (6), a piston (9) is inserted and installed in the sleeve (6), an "L"-shaped oil hole (902) is provided in the piston (9), and a side port (901) is provided on the side wall of the piston (9).

3. A balancing cylinder for an industrial robot as claimed in claim 2, characterized in that: Both ends of the sleeve (6) are provided with internal threads (607), and the side wall of the sleeve (6) is provided with a side hole (601), an annular sealing block (602) is inserted into the side hole (601), and a telescopic rod (604) is installed through the inner wall of the annular sealing block (602), one end of the telescopic rod (604) is installed with a rubber block (605) and passes through the inner wall of the side opening (901) to extend to the inside of the "L"-shaped oil hole (902), and the other end of the telescopic rod (604) is installed with a mounting seat (603), and the mounting seat (603) is fixedly installed with the outer wall of the annular sealing block (602).

4. A balancing cylinder for an industrial robot as claimed in claim 1, characterized in that: The filter assembly 1 comprises a single-end sleeve (7), a "T"-shaped oil hole (708) is provided inside the single-end sleeve (7), a "T"-shaped hole sealing plug (701) is inserted at one end of the single-end sleeve (7), an internal thread 2 (707) is provided at one end of the "T"-shaped hole sealing plug (701), an annular filter (703) is installed at the tail of the "T"-shaped hole sealing plug (701), a bottom plate (704) is installed at the tail of the annular filter (703), a pressure spring (705) is installed on the bottom plate (704), and a valve flap (706) is installed at the top of the pressure spring (705).

5. A balancing cylinder for an industrial robot as claimed in claim 4, characterized in that: The single-end sleeve (7) is provided with a bolt (702), and the single-end sleeve (7) is fixedly connected to the "T"-shaped hole sealing plug (701) via the bolt (702).

6. A balancing cylinder for an industrial robot as claimed in claim 1, characterized in that: A bearing (203) is installed inside the earring (2), and a ball (202) is installed on the bearing (203). A lubricating oil inlet (201) is opened on the side wall of the earring (2) and extends between the balls (202).

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