An adjustable arm for an industrial robot

Abstract

The present invention relates to the technical field of manipulators, and specifically to an adjustable arm for an industrial robot, comprising a first manipulator arm and a robot body on which the first manipulator arm is installed, wherein a second manipulator arm is hingedly connected to the first manipulator arm, a support plate is fixedly arranged on the second manipulator arm, an electric telescopic rod is fixedly installed on the support plate, a movable connecting ring is fixedly installed on the electric telescopic rod, and a first protective plate and a second protective plate are installed on the second manipulator arm. When an atomizing nozzle is in a non-working state, the first protective plate and the second protective plate are closed together, which can provide good protection for the atomizing nozzle. When the atomizing nozzle is in a working state, the first protective plate and the second protective plate are separated from each other, which can ensure that the atomizing nozzle works normally while the first protective plate and the second protective plate are located outside the atomizing nozzle, and can also provide a certain protection for the atomizing nozzle, thereby ensuring that it can be used safely.

Description

Technical Field

[0001] The invention relates to the technical field of manipulators, in particular to an adjustable arm for an industrial robot. Background Art

[0002] Industrial robot is a very efficient mechanical equipment, which is widely used in various fields. With the development of robot technology, some robots are equipped with flexible mechanical arms, which can be rotated and adjusted at multiple angles according to different needs, and a nozzle is arranged on the mechanical arm, so that spraying can be performed to complete some spraying and humidification work. After a period of use, the nozzle is affected by scale and impurities, and it will be blocked and the spraying will be poor. It needs to be disassembled for inspection or replacement, but the existing nozzles are installed on the mechanical arm by screws during installation, which makes the installation and removal of the nozzle very inconvenient, and the convenient installation and removal of the nozzle cannot be achieved, which affects the work efficiency of nozzle inspection and replacement. In addition, after the nozzle is installed on the mechanical arm, no additional protection mechanism is set. Regardless of whether the nozzle is spraying, it is exposed to the outside. Due to the complex working environment of the industrial robot, the nozzle is easily damaged by external forces, which causes certain economic losses. Summary of the invention

[0003] The object of the present invention is to provide an adjustable arm for an industrial robot to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An adjustable arm for an industrial robot comprises a first mechanical arm and a robot body on which the first mechanical arm is installed, wherein the first mechanical arm is hingedly connected to a second mechanical arm, the second mechanical arm is fixedly provided with a support plate, an electric telescopic rod is fixedly installed on the support plate, an active connecting ring is fixedly installed on the electric telescopic rod, the active connecting ring is sleeved on the second mechanical arm, and a fixed connecting frame is fixedly provided on the circumference of the lower end surface of the active connecting ring, a supporting carrier is symmetrically fixedly provided on the active connecting ring, connecting carrier plates are symmetrically fixedly provided on both sides of the supporting carrier, a vertical stabilizing channel is opened on the connecting carrier plate, and the upper side of the vertical stabilizing channel is connected to It is connected to an oblique driving channel, and the first bearing rods are symmetrically fixedly arranged at both ends of the second mechanical arm, and a matching socket is opened on the first bearing rod, and the second bearing rods are symmetrically fixedly arranged on both sides of the second mechanical arm, and a support block is fixedly arranged on the second bearing rod, and a movable socket is opened on the support block, and the movable socket passes through the second bearing rod, a connecting water pipe is fixedly arranged on the lower end of the second mechanical arm, and a first connecting ring is fixedly arranged on the connecting water pipe, and a first fixing groove is opened on the first connecting ring, and connecting sockets are symmetrically opened on the lower end surface of the second mechanical arm, and a convenient and detachable spray mechanism with a protective function is installed on the second mechanical arm.

[0006] Preferably, the convenient and detachable spray mechanism includes a driving connecting rod, a first protective plate, a second protective plate, a matching connecting block, a movable connecting plate and an atomizing nozzle, the driving connecting rod is hinged on a fixed connecting frame, the lower ends of the driving connecting rods at both ends of the second mechanical arm are hinged with the first protective plate, and the lower ends of the driving connecting rods on both sides of the second mechanical arm are hinged with the second protective plate.

[0007] Preferably, a connecting hole is provided on the first protective plate, and a first bearing plate is fixedly provided on the upper end of the first protective plate, a first movable connecting hole is provided on the first bearing plate, a first bearing rod is inserted in the first movable connecting hole, and a first connecting frame is fixedly provided on the upper end of the first bearing plate, and the first connecting frame is hinged to the lower end of the driving connecting rod hinged to the first protective plate.

[0008] Preferably, a connecting channel is provided on the second protective plate, and a second supporting plate is fixedly provided on the upper end of the second protective plate, a second movable connecting hole is provided on the second supporting plate, a second supporting rod is inserted in the second movable connecting hole, and a second connecting frame is fixedly provided on the upper end of the second supporting plate, and the second connecting frame is hinged to the lower end of the driving connecting rod hinged to the second protective plate.

[0009] Preferably, a mating connecting block is installed on the first bearing rod, and a bearing plug rod is fixedly provided on the mating connecting block, and the bearing plug rod is inserted in the mating socket, and connecting plug rods are symmetrically fixedly provided on both sides of the mating connecting block, and the connecting plug rods are inserted in the vertical stable channel, and a drooping bearing plate is fixedly provided at the lower end of the mating connecting block, and a supporting mating rod is fixedly provided on the drooping bearing plate, and the supporting mating rod is inserted in the connecting socket, and a fixing ring body is fixedly provided on the supporting mating rod, the fixing ring body is on the inner side of the first protective plate, and plug-in sealing ring strips are symmetrically fixedly provided at the upper and lower ends of the fixing ring body.

[0010] Preferably, a movable connecting plate is symmetrically mounted on the second bearing rod, a matching linkage rod is fixedly arranged on the movable connecting plate, the matching linkage rod is inserted into the movable socket, and a connecting spring is sleeved on the matching linkage rod.

[0011] Preferably, a matching push rod is fixedly provided on the movable serial plate on the lower side of the matching linkage rod, the lower end of the movable serial plate is hinged with a connecting rod, the upper end of the connecting rod is hinged with a connecting linkage plate, and the connecting linkage plate is partially inserted in the connecting channel.

[0012] Preferably, a limiting connecting rod is fixedly provided at the upper end of the connecting linkage plate, the limiting connecting rod is inserted into the connecting socket, and a matching connecting plate is fixedly provided at the lower end of the connecting linkage plate, and a positioning carrier is fixedly provided at the lower end of the matching connecting plate.

[0013] Preferably, an atomizing nozzle is installed at the lower end of the second mechanical arm, and a mounting sleeve is fixedly provided on the atomizing nozzle. The mounting sleeve is sleeved on the connecting water pipe, and a second connecting ring is fixedly provided on the upper end of the mounting sleeve, and a second fixing groove is opened on the second connecting ring.

[0014] Preferably, positioning matching blocks are symmetrically fixedly provided on both sides of the atomizing nozzle, a positioning matching groove is provided on the positioning matching block, and when the atomizing nozzle is installed on the second mechanical arm, a positioning carrier block is inserted into the positioning matching groove.

[0015] Compared with the prior art, the invention has the following advantages:

[0016] 1. A first protective plate and a second protective plate are installed on the second robotic arm. When the atomizing nozzle is in a non-working state, the first protective plate and the second protective plate are closed together, which can provide good protection for the atomizing nozzle. When the atomizing nozzle is in a working state, the first protective plate and the second protective plate are separated from each other, which can ensure that the atomizing nozzle works normally while the first protective plate and the second protective plate are located outside the atomizing nozzle, which can also provide certain protection for the atomizing nozzle and ensure its safe use.

[0017] 2. When installing the atomizer nozzle, insert the positioning block into the positioning matching groove to position the atomizer nozzle, and then start the electric telescopic rod to drive the first protective plate and the second protective plate to move toward the direction of the atomizer nozzle. In this way, the movable connecting plate can move under the action of the connecting spring, and then drive the positioning block to move upward. The atomizer nozzle will be driven upward through the positioning block, and then the installation sleeve will be connected to the connecting water pipe, so that the atomizer nozzle can be accurately moved to the installation position to achieve positioning installation.

[0018] 3. In addition, when the atomizing nozzle reaches the installation position, as the movable connecting ring continues to move upward, the oblique driving channel will drive the matching connecting block to move toward the first bearing rod, so that the two fixed ring bodies are sleeved on the first connecting ring and the second connecting ring and closed together, and the plug-in sealing ring strip is inserted into the first fixing groove and the second fixing groove, which further fixes the installation of the atomizing nozzle and further strengthens the sealing between the installation sleeve and the connecting water pipe, thereby ensuring the stable use of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the robot assembly.

[0020] Figure 2 Schematic diagram of the second robot assembly from the first perspective.

[0021] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0022] Figure 4 Schematic diagram of the second robotic arm assembly from a second perspective.

[0023] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle.

[0024] Figure 6 This is a schematic diagram of the assembly of the second robotic arm and the atomizing nozzle.

[0025] Figure 7 for Figure 6 Enlarged schematic diagram of point C in the middle.

[0026] Figure 8 This is a schematic diagram of the structure of the second robotic arm from the first perspective.

[0027] Fig. 9 This is a schematic diagram of the structure of the second robotic arm from a second perspective.

[0028] Fig.10 It is a schematic diagram of the structure of the first protective plate.

[0029] Fig.11 It is a schematic diagram of the structure of the second protective plate.

[0030] Fig.12 A schematic diagram of the structure of the connecting block.

[0031] Fig.13 It is a schematic diagram of the structure of the atomizing nozzle.

[0032] In the figure: 1, robot body; 2, first mechanical arm; 3, second mechanical arm; 31, support plate; 32, electric telescopic rod; 33, movable connecting ring; 331, fixed connecting frame; 34, supporting carrier plate; 35, connecting carrier plate; 351, vertical stable channel; 352, oblique driving channel; 36, first bearing rod; 361, matching socket; 37, second bearing rod; 371, support block; 372, movable socket; 38, connecting water pipe; 381, first connecting ring; 382, ​​first fixed groove; 39, connecting socket; 4, driving connecting rod; 5, first protective plate; 51, connecting socket; 52, first bearing plate; 53, first movable connecting hole; 54, first connecting frame; 6. Second protective plate; 61. Connecting channel; 62. Second bearing plate; 63. Second movable connecting hole; 64. Second connecting frame; 7. Matching connecting block; 71. Bearing plug rod; 72. Connecting plug rod; 73. Drooping bearing plate; 74. Support matching rod; 75. Fixed ring body; 76. Insert sealing ring strip; 8. Movable connecting plate; 81. Matching linkage rod; 82. Connecting spring; 83. Matching push rod; 84. Connecting connecting rod; 85. Connecting linkage plate; 86. Limiting connecting rod; 87. Matching connecting plate; 88. Positioning bearing block; 9. Atomizing nozzle; 91. Mounting sleeve; 92. Second connecting ring; 93. Second fixing groove; 94. Positioning matching block; 95. Positioning matching groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 13 , the present invention provides a technical solution:

[0035] An adjustable arm for an industrial robot comprises a first mechanical arm 2 and a robot body 1 on which the first mechanical arm 2 is installed, the first mechanical arm 2 is hingedly connected to a second mechanical arm 3, a support plate 31 is fixedly arranged on the second mechanical arm 3, an electric telescopic rod 32 is fixedly arranged on the support plate 31, a movable connecting ring 33 is fixedly arranged on the electric telescopic rod 32, the movable connecting ring 33 is sleeved on the second mechanical arm 3, and a fixed connecting frame 331 is fixedly arranged on the circumference of the lower end surface of the movable connecting ring 33, a supporting carrier plate 34 is symmetrically fixedly arranged on the movable connecting ring 33, connecting carrier plates 35 are symmetrically fixedly arranged on both sides of the supporting carrier plate 34, a vertical stabilizing channel 351 is opened on the connecting carrier plate 35, an oblique driving channel 352 is connected to the upper side of the vertical stabilizing channel 351, and the vertical stabilizing channel 351 is connected to the upper side of the vertical stabilizing channel 351. The width of 51 is equal to the width of the oblique driving channel 352, the first bearing rods 36 are symmetrically fixedly arranged at both ends of the second mechanical arm 3, the first bearing rods 36 are provided with a matching socket 361, and the second bearing rods 37 are symmetrically fixedly arranged on both sides of the second mechanical arm 3, the second bearing rods 37 are fixedly provided with a support block 371, the support block 371 is provided with a movable socket 372, and the movable socket 372 penetrates the second bearing rod 37, the lower end of the second mechanical arm 3 is fixedly provided with a connecting water pipe 38, the connecting water pipe 38 is fixedly provided with a first connecting ring 381, the first connecting ring 381 is provided with a first fixing groove 382, ​​the lower end surface of the second mechanical arm 3 is symmetrically provided with connecting sockets 39, and a convenient and detachable spray mechanism with a protective function is installed on the second mechanical arm 3.

[0036] The convenient and detachable spray mechanism includes a driving connecting rod 4, a first protective plate 5, a second protective plate 6, a matching connecting block 7, a movable serial plate 8 and an atomizing nozzle 9. The driving connecting rod 4 is hinged on the fixed connecting frame 331. The lower ends of the driving connecting rods 4 at both ends of the second mechanical arm 3 are hinged with the first protective plate 5, and the lower ends of the driving connecting rods 4 on both sides of the second mechanical arm 3 are hinged with the second protective plate 6. When the atomizing nozzle 9 is in a non-working state, the first protective plate 5 and the second protective plate 6 are closed together to protect it.

[0037] A connecting socket 51 is provided on the first protective plate 5, and a first bearing plate 52 is fixedly provided on the upper end of the first protective plate 5, a first movable connecting hole 53 is provided on the first bearing plate 52, a first bearing rod 36 is inserted in the first movable connecting hole 53, and a first connecting frame 54 is fixedly provided on the upper end of the first bearing plate 52, and the first connecting frame 54 is hinged to the lower end of the driving connecting rod 4 hinged to the first protective plate 5.

[0038] A connecting channel 61 is provided on the second protective plate 6, and a second bearing plate 62 is fixedly provided on the upper end of the second protective plate 6, a second movable connecting hole 63 is provided on the second bearing plate 62, a second bearing rod 37 is inserted in the second movable connecting hole 63, and a second connecting frame 64 is fixedly provided on the upper end of the second bearing plate 62, and the second connecting frame 64 is hinged to the lower end of the driving connecting rod 4 hinged to the second protective plate 6.

[0039] A matching connecting block 7 is installed on the first bearing rod 36, and a bearing plug rod 71 is fixedly provided on the matching connecting block 7. The bearing plug rod 71 is inserted in the matching socket 361, and connecting plug rods 72 are symmetrically fixedly provided on both sides of the matching connecting block 7. The connecting plug rod 72 is inserted in the vertical stable channel 351, and the connecting plug rod 72 contacts the inner wall of the vertical stable channel 351, and a drooping bearing plate 73 is fixedly provided at the lower end of the matching connecting block 7, and a supporting matching rod 74 is fixedly provided on the drooping bearing plate 73, and the supporting matching rod 74 is inserted in the connecting socket 51, and a fixing ring body 75 is fixedly provided on the supporting matching rod 74, and the fixing ring body 75 is located on the inner side of the first protective plate 5, and plug-in sealing ring strips 76 are symmetrically fixedly provided at the upper and lower ends of the fixing ring body 75.

[0040] A movable serial plate 8 is symmetrically installed on the second bearing rod 37, and a matching linkage rod 81 is fixedly arranged on the movable serial plate 8. The matching linkage rod 81 is inserted into the movable socket 372, and a connecting spring 82 is sleeved on the matching linkage rod 81, and the two ends of the connecting spring 82 are respectively welded to the support block 371 and the movable serial plate 8.

[0041] A matching push rod 83 is fixedly provided on the movable serial plate 8 at the lower side of the matching linkage rod 81, and a connecting rod 84 is hinged at the lower end of the movable serial plate 8, and a connecting linkage plate 85 is hinged at the upper end of the connecting linkage rod 84, and a part of the connecting linkage plate 85 is inserted in the connecting channel 61.

[0042] A limit connecting rod 86 is fixedly provided at the upper end of the connecting linkage plate 85, and the limit connecting rod 86 is inserted into the connecting socket 39, and a matching connecting plate 87 is fixedly provided at the lower end of the connecting linkage plate 85, and a positioning carrier block 88 is fixedly provided at the lower end of the matching connecting plate 87.

[0043] An atomizing nozzle 9 is installed at the lower end of the second mechanical arm 3, and a mounting sleeve 91 is fixedly provided on the atomizing nozzle 9, and the mounting sleeve 91 is sleeved on the connecting water pipe 38, and a second connecting ring 92 is fixedly provided on the upper end of the mounting sleeve 91, and a second fixing groove 93 is opened on the second connecting ring 92. In addition, when the atomizing nozzle 9 is installed on the second mechanical arm 3, the second connecting ring 92 contacts the first connecting ring 381, and the two fixing ring bodies 75 are closed together at this time, sleeved on the first connecting ring 381 and the second connecting ring 92, the plug-in sealing ring strip 76 at the upper end is inserted into the first fixing groove 382, ​​and the plug-in sealing ring strip 76 at the lower end is inserted into the second fixing groove 93, so that the atomizing nozzle 9 is further fixed and the sealing between the atomizing nozzle 9 and the connecting water pipe 38 is further guaranteed.

[0044] Positioning matching blocks 94 are symmetrically fixed on both sides of the atomizing nozzle 9, and a positioning matching groove 95 is opened on the positioning matching block 94. When the atomizing nozzle 9 is installed on the second mechanical arm 3, a positioning carrier 88 is inserted into the positioning matching groove 95, and the size of the positioning carrier 88 is equal to the size of the positioning matching groove 95.

[0045] When spraying is needed, the electric telescopic rod 32 is started to drive the movable connecting ring 33 to move downward, and then the first protective plate 5 and the second protective plate 6 can be driven to move away from the second mechanical arm 3 under the action of the driving connecting rod 4, so that the atomizing nozzle 9 can be exposed and spraying can be carried out smoothly. At this time, the connecting rod 72 is still in the vertical stable channel 351, and when the atomizing nozzle 9 is in a non-working state, the first protective plate 5 and the second protective plate 6 are closed together, which can play a good protective role for the atomizing nozzle 9. When the atomizing nozzle 9 is in a working state, the first protective plate 5 and the second protective plate 6 are located outside the atomizing nozzle 9 and can also play a role in protecting the atomizing nozzle 9 The invention has a certain protective effect to ensure that it can be used safely. When the atomizing nozzle 9 needs to be disassembled, the electric telescopic rod 32 is started to drive the movable connecting ring 33 to move downward, so that the connecting rod 72 is inserted into the oblique driving channel 352, so that the matching connecting block 7 will be driven to move away from the first bearing rod 36 under the action of the oblique driving channel 352, and then the fixed ring body 75 will be driven to move away from the atomizing nozzle 9, so that it is separated from the atomizing nozzle 9. After that, as the movable connecting ring 33 continues to move downward, the second bearing plate 62 will contact the matching ejector rod 83, so that the movable serial plate 8 will be driven to move away from the second bearing rod 37 under the action of the second bearing plate 62. The atomizing nozzle 9 is then quickly disassembled by pulling the positioning block 88 downwardly and pulling the connecting link 84 downwardly. When installing the atomizing nozzle 9, the positioning block 88 is inserted into the positioning matching groove 95 to realize the positioning of the atomizing nozzle 9. Then, the electric telescopic rod 32 is started to drive the movable connecting ring 33 to move upwardly. In this way, the first protective plate 5 and the second protective plate 6 are driven to move in the direction of the second mechanical arm 3. As the second protective plate 6 moves, the connecting spring 82 is used to connect the first protective plate 5 and the second protective plate 6. The movable connecting plate 8 will be driven to move in the direction of the second supporting rod 37, and then the positioning supporting block 88 will be driven to move upward under the action of the connecting rod 84, so that the installation sleeve 91 is sleeved on the connecting water pipe 38 to position it at the installation position, and then the matching connecting block 7 will be driven to move under the action of the oblique driving channel 352, so that the two fixed ring bodies 75 are closed together and sleeved on the first connecting ring 381 and the second connecting ring 92, so that the connecting water pipe 38 and the atomizing nozzle 9 are fixedly connected, and the sealing between the connecting water pipe 38 and the atomizing nozzle 9 is strengthened, thereby ensuring the stable use of the atomizing nozzle 9, making the installation and removal of the atomizing nozzle 9 very convenient and quick, and the operation is simple.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable arm for an industrial robot, comprising a first mechanical arm (2) and a robot body (1) on which the first mechanical arm (2) is mounted, wherein a second mechanical arm (3) is hingedly connected to the first mechanical arm (2), characterized in that: The second mechanical arm (3) is fixedly provided with a support plate (31), an electric telescopic rod (32) is fixedly mounted on the support plate (31), a movable connecting ring (33) is fixedly mounted on the electric telescopic rod (32), the movable connecting ring (33) is sleeved on the second mechanical arm (3), and a fixed connecting frame (331) is fixedly mounted on the circumference of the lower end surface of the movable connecting ring (33), a support carrier plate (34) is symmetrically fixedly mounted on the movable connecting ring (33), connecting support plates (35) are symmetrically fixedly mounted on both sides of the support carrier plate (34), a vertical stabilizing channel (351) is opened on the connecting support plate (35), and an oblique driving channel (352) is connected to the upper side of the vertical stabilizing channel (351), The first bearing rods (36) are symmetrically fixedly arranged on the left and right sides of the second mechanical arm (3), and the first bearing rods (36) are provided with a matching socket (361). The second bearing rods (37) are symmetrically fixedly arranged on the front and rear sides of the second mechanical arm (3), and the second bearing rods (37) are fixedly arranged with a support block (371), and the support block (371) is provided with a movable socket (372), and the movable socket (372) penetrates the second bearing rod (37). The lower end of the second mechanical arm (3) is fixedly arranged with a connecting water pipe (38), and the connecting water pipe (38) is fixedly arranged with a first connecting ring (381), and the first connecting ring (381) is provided with a first fixing groove (382). The lower end surfaces of the two mechanical arms (3) are symmetrically provided with connection sockets (39), and a conveniently installed and detachable spray mechanism with a protective function is installed on the second mechanical arm (3), the conveniently installed and detachable spray mechanism comprising a driving connecting rod (4), a first protective plate (5), a second protective plate (6), a matching connecting block (7), a movable serial plate (8) and an atomizing nozzle (9), the driving connecting rod (4) being hinged on a fixed connecting frame (331), the lower ends of the driving connecting rods (4) on the left and right sides of the second mechanical arm (3) being hinged with the first protective plate (5), and the lower ends of the driving connecting rods (4) on the front and rear sides of the second mechanical arm (3) being hinged with the second protective plate (6), the first protective plate (5) being provided with a connecting socket (51), and the first A first bearing plate (52) is fixedly provided at the upper end of the protective plate (5), a first movable connection hole (53) is provided on the first bearing plate (52), a first bearing rod (36) is inserted into the first movable connection hole (53), a first connecting frame (54) is fixedly provided at the upper end of the first bearing plate (52), the first connecting frame (54) is hingedly connected to the lower end of the driving connecting rod (4) hinged to the first protective plate (5), a connecting channel (61) is provided on the second protective plate (6), a second bearing plate (62) is fixedly provided at the upper end of the second protective plate (6), a second movable connection hole (63) is provided on the second bearing plate (62), a second bearing rod (37) is inserted into the second movable connection hole (63),A second connecting frame (64) is fixedly provided at the upper end of the second bearing plate (62), and the second connecting frame (64) is hingedly connected to the lower end of the driving connecting rod (4) hinged to the second protective plate (6). A matching connecting block (7) is installed on the first bearing rod (36), and a bearing plug rod (71) is fixedly provided on the matching connecting block (7). The bearing plug rod (71) is inserted into the matching plug hole (361), and connecting plug rods (72) are symmetrically fixedly provided on both sides of the matching connecting block (7), and the connecting plug rods (72) are inserted into the vertical stabilizing channel (351). The movable connecting ring (33) moves downward, so that the connecting plug rod (72) is inserted into the oblique driving channel (352), and the matching connecting block (7) is fixedly provided with a connecting rod (71). A drooping bearing plate (73) is fixedly provided at the lower end of the connecting block (7), a supporting matching rod (74) is fixedly provided on the drooping bearing plate (73), the supporting matching rod (74) is inserted into the connecting socket (51), and a fixing ring (75) is fixedly provided on the supporting matching rod (74), a movable serial plate (8) is symmetrically mounted on the second bearing rod (37), a matching linkage rod (81) is fixedly provided on the movable serial plate (8), the matching linkage rod (81) is inserted into the movable socket (372), and a connecting spring (82) is sleeved on the matching linkage rod (81), and a matching push rod (83) is fixedly provided on the movable serial plate (8) at the lower side of the matching linkage rod (81), The lower end of the movable serial plate (8) is hinged with a connecting rod (84), the upper end of the connecting rod (84) is hinged with a connecting linkage plate (85), the upper end of the connecting linkage plate (85) is fixedly provided with a limit connecting rod (86), the limit connecting rod (86) is plugged into the connecting socket (39), and the lower end of the connecting linkage plate (85) is fixedly provided with a matching connecting plate (87), the lower end of the matching connecting plate (87) is fixedly provided with a positioning carrier (88), the lower end of the second mechanical arm (3) is equipped with an atomizing nozzle (9), the atomizing nozzle (9) is fixedly provided with a mounting sleeve (91), the mounting sleeve (91) is sleeved on the connecting water pipe (38), and the mounting sleeve (91) is fixedly provided with a mounting sleeve (91). 1) is fixedly provided with a second connecting ring (92) at the upper end thereof, and a second fixing groove (93) is provided on the second connecting ring (92). When the atomizing nozzle (9) is mounted on the second mechanical arm (3), the second connecting ring (92) contacts the first connecting ring (381), and at this time, the two fixing ring bodies (75) are closed together and sleeved on the first connecting ring (381) and the second connecting ring (92). Positioning matching blocks (94) are symmetrically fixedly provided on both sides of the atomizing nozzle (9), and a positioning matching groove (95) is provided on the positioning matching block (94). When the atomizing nozzle (9) is mounted on the second mechanical arm (3), a positioning carrier block (88) is inserted into the positioning matching groove (95).

2. The adjustable arm for an industrial robot according to claim 1, characterized in that: The fixed ring body (75) is located on the inner side of the first protective plate (5), and plug-in sealing ring strips (76) are symmetrically fixedly provided at the upper and lower ends of the fixed ring body (75), the plug-in sealing ring strip (76) at the upper end is plugged into the first fixed groove (382), and the plug-in sealing ring strip (76) at the lower end is plugged into the second fixed groove (93).

3. The adjustable arm for an industrial robot according to claim 2, characterized in that: The connecting linkage plate (85) is partially inserted into the connecting channel (61).

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