Telescopic arm driven by ball screw

Abstract

The utility model discloses a ball screw driving telescopic arm which comprises a rack, a fixing seat and a carrying seat, a motor is arranged in the rack, a sliding groove is formed in the top of the rack, the fixing seat and the carrying seat are located at the top of the sliding groove, a fixing block is arranged at the bottom of the fixing seat, and a ball nut is arranged on the side wall of the fixing block. A ball screw is rotationally connected into the sliding groove, the ball nut is arranged on the ball screw in a sleeving mode, the ball screw is connected with a motor, the motor is started to drive the ball screw to rotate, the ball screw drives the ball nut and the fixing base to move front and back, and then the carrying base is driven to move front and back. And the ball screw and the ball nut are used for replacing belt driving, so that excessive abrasion is avoided during use, the service life is greatly prolonged, and the frequency of maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to a telescopic arm driven by a ball screw. Background Art

[0002] With the rapid development of industrial technology, the emergence of robots can replace the heavy labor of people to realize the mechanization and automation of industrial production, greatly improving the efficiency and accuracy of industrial production and processing. As an important component of robots, manipulators are widely used in various aspects of mechanical production, among which horizontal telescopic arms are used for horizontal grasping, moving objects or operating tools in mechanical production.

[0003] Most of the existing telescopic arms are moved by belt drive. During long-term and frequent movement, the belt is easily worn, has a short service life, and requires frequent maintenance. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing telescopic arm driven by a ball screw, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a ball screw driven telescopic arm, by arranging a motor inside the frame, a slide groove is opened on the top of the frame, the fixed seat and the transport seat are located at the top of the slide groove, a fixed block is arranged at the bottom of the fixed seat, and a ball nut is arranged on the side wall of the fixed block. A ball screw is rotatably connected inside the slide groove, and the ball nut is sleeved on the ball screw. The ball screw is connected to the motor, and the ball screw is driven to rotate by starting the motor. The ball screw drives the ball nut and the fixed seat to move back and forth, and then drives the transport seat to move back and forth. Compared with the traditional telescopic arm, the ball screw and ball nut are used instead of belt drive, which will not cause too much wear during use, greatly improves the service life, and reduces the frequency of maintenance.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A ball screw driven telescopic arm, comprising:

[0009] A frame, a motor is installed inside the frame, a slide groove is opened on the top of the frame, a first pulley is rotatably connected to the side wall of the frame, a second pulley is rotatably connected to the side wall of the frame above the first pulley, the first pulley and the second pulley are connected by a belt, a ball screw is installed on the side wall of the second pulley, and the ball screw extends into the slide groove;

[0010] A fixed seat, slidably located on the top of the frame, a slider is installed at the bottom of the fixed seat, a ball nut is provided on the side wall of the slider, and the ball nut is sleeved on the ball screw rod;

[0011] The transport seat is located on the top of the fixed seat, and a three-claw clamping platform is installed on the top of the transport seat.

[0012] As a preferred solution of the ball screw driven telescopic arm described in the utility model, a T-shaped slot is opened on the top of the fixed seat, a T-shaped plate is installed on the bottom of the transport seat, the T-shaped plate is located inside the T-shaped slot, and a limiting plate is installed on the side wall of the transport seat.

[0013] As a preferred solution of a ball screw driven telescopic arm described in the utility model, it also includes a limit assembly, which includes a fixed frame installed on the side wall of the fixed seat, a slide located inside the fixed frame, a spring installed at the bottom of the slide and a limit rod installed on the top of the slide, and the limit rod extends through the top of the fixed frame and through the limit plate.

[0014] As a preferred solution of a ball screw driven telescopic arm described in the utility model, a mounting plate is installed at the front end of the top of the fixed seat, a reciprocating threaded rod is rotatably connected to the top of the mounting plate, a third pulley is installed at one end of the reciprocating threaded rod, a second gear is rotatably connected to the side wall of the mounting plate, a fourth pulley is installed on the side wall of the second gear, the fourth pulley is connected to the third pulley by a belt, and a lubricating oil tank is installed on the top of the fixed seat.

[0015] As a preferred solution of the ball screw driven telescopic arm described in the utility model, a first gear matching with the second gear is installed on the side wall of the second pulley.

[0016] As a preferred solution of a ball screw driven telescopic arm described in the utility model, it also includes a lubrication assembly, which includes a fixed tube installed on the top of the mounting plate, a piston located inside the fixed tube, a first delivery tube installed on the side wall of the fixed tube, and a second delivery tube installed on the other side wall of the fixed tube, the other end of the first delivery tube is connected to the lubricating oil tank, a first one-way valve is installed on the tube body of the first delivery tube, the other end of the second delivery tube passes through the fixed seat and faces the ball nut, a fixed rod is installed on the side wall of the piston, a reciprocating threaded hole is opened on the side end of the fixed rod, and the reciprocating threaded rod rotates and extends into the reciprocating threaded hole.

[0017] Compared with the prior art: a motor is arranged inside the frame, a slide groove is opened on the top of the frame, the fixed seat and the transport seat are located at the top of the slide groove, a fixed block is arranged at the bottom of the fixed seat, a ball nut is arranged on the side wall of the fixed block, a ball screw is rotatably connected inside the slide groove, the ball nut is sleeved on the ball screw, the ball screw is connected to the motor, and the motor is started to drive the ball screw to rotate, and the ball screw drives the ball nut and the fixed seat to move forward and backward, and then drives the transport seat to move forward and backward. Compared with the traditional telescopic arm, the ball screw and ball nut are used instead of the belt drive, which will not cause too much wear during use, greatly improves the service life, and reduces the frequency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is the overall structure diagram of a telescopic arm driven by a ball screw in the utility model;

[0020] Figure 2 This is a structural diagram of a telescopic arm frame driven by a ball screw in the utility model;

[0021] Figure 3 This is a structural diagram of a telescopic arm fixing seat driven by a ball screw in the utility model;

[0022] Figure 4 This is a structural diagram of a ball screw driven telescopic arm limit assembly of the utility model;

[0023] Figure 5 This is a structural diagram of a ball screw driven telescopic arm lubrication assembly of the utility model. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The utility model provides a ball screw driven telescopic arm, which arranges a motor inside a frame, a slide groove is opened on the top of the frame, a fixed seat and a transport seat are located at the top of the slide groove, a fixed block is arranged at the bottom of the fixed seat, a ball nut is arranged on the side wall of the fixed block, a ball screw is rotatably connected inside the slide groove, the ball nut is sleeved on the ball screw, the ball screw is connected to the motor, and the motor is started to drive the ball screw to rotate, the ball screw drives the ball nut and the fixed seat to move back and forth, and then drives the transport seat to move back and forth. Compared with the traditional telescopic arm, the ball screw and the ball nut are used to replace the belt drive, and there will not be too much wear during use, which greatly improves the service life and reduces the frequency of repair and maintenance.

[0028] Figure 1-5 The figure shows a schematic diagram of a structure of a ball screw driven telescopic arm embodiment of the utility model, please refer to Figure 1-Figure 5 In this embodiment, a ball screw driven telescopic arm includes a frame 100 , a fixing seat 200 , a transport seat 300 , a limiting assembly 400 and a lubrication assembly 500 .

[0029] A motor 110 is installed inside the frame 100, a slide groove 120 is opened on the top of the frame 100, and a first pulley 130 is rotatably connected to the side wall of the frame 100. The side wall of the frame 100 is located above the first pulley 130 and is rotatably connected to the second pulley 140. The first pulley 130 and the second pulley 140 are connected by a belt. A ball screw 150 is installed on the side wall of the second pulley 140, and the ball screw 150 extends into the slide groove 120.

[0030] The fixed seat 200 is slidably located at the top of the frame 100, a slider 210 is installed at the bottom of the fixed seat 200, a ball nut 220 is provided on the side wall of the slider 210, and the ball nut 220 is sleeved on the rod body of the ball screw 150, a mounting plate 240 is installed at the front end of the top of the fixed seat 200, a reciprocating threaded rod 250 is rotatably connected to the top of the mounting plate 240, a third pulley 260 is installed at one end of the reciprocating threaded rod 250, a second gear 270 is rotatably connected to the side wall of the mounting plate 240, a fourth pulley 280 is installed on the side wall of the second gear 270, and the fourth pulley 280 is connected to the third pulley 260 through a belt, a lubricating oil tank 290 is installed on the top of the fixed seat 200, and a gear 270 is installed on the side wall of the second pulley 140 to cooperate with the second gear 270 The first gear 160 drives the first pulley 130 to rotate by starting the motor 110. When the first pulley 130 rotates, the belt drives the second pulley 140 and the first gear 160 to rotate. The second pulley 140 drives the ball screw 150 to rotate. When the ball screw 150 rotates, it pushes the ball nut 220 to drive the slider 210 and the fixed seat 200 to move back and forth on the top of the frame 100. The fixed seat 200 drives the transport seat 300 to move back and forth. When the fixed seat 200 moves forward into place, the second gear 270 meshes with the first gear 160. As the first gear 160 rotates, it drives the second gear 270 and the fourth pulley 280 to rotate. The fourth pulley 280 drives the third pulley 260 and the reciprocating threaded rod 250 to rotate by the belt.

[0031] The transport seat 300 is located at the top of the fixed seat 200, and a three-claw clamp 310 is installed on the top of the transport seat 300. A T-shaped slot 230 is opened on the top of the fixed seat 200, and a T-shaped plate 320 is installed at the bottom of the transport seat 300. The T-shaped plate 320 is located inside the T-shaped slot 230. A limit plate 330 is installed on the side wall of the transport seat 300. The limit assembly 400 includes a fixed frame 410 installed on the side wall of the fixed seat 200, a slide plate 420 located inside the fixed frame 410, a spring 430 installed at the bottom of the slide plate 420, and a limit rod 440 installed on the top of the slide plate 420. The limit rod 440 extends through the The sliding plate 420 is pulled out of the top of the fixed frame 410 and passes through the limiting plate 330. By pulling the sliding plate 420 downward and squeezing the spring 430, the limiting rod 440 slides with the sliding plate 420 into the fixed frame 410, pushing the transport seat 300 to slide toward the top of the fixed seat 200. The T-shaped plate 320 slides inside the T-shaped slot 230 until the side wall of the T-shaped plate 320 abuts against the inner wall of the T-shaped slot 230. At this time, the sliding plate 420 is released, and the spring 430 rebounds to push the sliding plate 420 and the limiting rod 440 to move upward. The limiting rod 440 passes through the limiting plate 330 to fix the transport seat 300 on the top of the fixed seat 200.

[0032] The lubrication assembly 500 includes a fixed tube 510 installed on the top of the mounting plate 240, a piston 520 located inside the fixed tube 510, a first delivery tube 530 installed on the side wall of the fixed tube 510, and a second delivery tube 540 installed on the other side wall of the fixed tube 510. The other end of the first delivery tube 530 is connected to the lubricating oil tank 290. The first delivery tube 530 is installed with a first one-way valve 531. The other end of the second delivery tube 540 passes through the fixed seat 200 and faces the ball nut 220. A fixed rod 521 is installed on the side wall of the piston 520. A reciprocating threaded hole 522 is opened at the side end of the fixed rod 521. The reciprocating threaded rod 250 rotates and extends into the reciprocating threaded hole. Inside 522, when the reciprocating threaded rod 250 rotates, the screw structure is used to push the fixed rod 521 to drive the piston 520 to reciprocate inside the fixed tube 510. When the piston 520 moves toward the outside of the fixed tube 510, the first one-way valve 531 is opened and the second one-way valve 541 is closed. The lubricating oil in the lubricating oil tank 290 enters the fixed tube 510 through the first delivery pipe 530. When the piston 520 moves toward the inside of the fixed tube 510, the second one-way valve 541 is opened and the first one-way valve 531 is closed. The lubricating oil in the fixed tube 510 is sprayed to the ball nut 220 through the second delivery pipe 540 to lubricate the ball nut 220.

[0033] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A ball screw driven telescopic arm, characterized in that: include: A frame (100), wherein a motor (110) is installed inside the frame (100), a slide groove (120) is opened on the top of the frame (100), a first belt pulley (130) is rotatably connected to the side wall of the frame (100), a second belt pulley (140) is rotatably connected to the side wall of the frame (100) located above the first belt pulley (130), the first belt pulley (130) and the second belt pulley (140) are connected by a belt, a ball screw (150) is installed on the side wall of the second belt pulley (140), and the ball screw (150) extends into the inside of the slide groove (120); A fixed seat (200) is slidably located on the top of the frame (100), a slider (210) is installed at the bottom of the fixed seat (200), a ball nut (220) is provided on the side wall of the slider (210), and the ball nut (220) is sleeved on the shaft of the ball screw (150); The transport seat (300) is located on the top of the fixing seat (200), and a three-claw clamping platform (310) is installed on the top of the transport seat (300).

2. A ball screw driven telescopic arm according to claim 1, characterized in that: The top of the fixing seat (200) is provided with a T-shaped slot (230), the bottom of the transport seat (300) is provided with a T-shaped plate (320), the T-shaped plate (320) is located inside the T-shaped slot (230), and the side wall of the transport seat (300) is provided with a limiting plate (330).

3. A ball screw driven telescopic arm according to claim 2, characterized in that: The invention also includes a limiting assembly (400), wherein the limiting assembly (400) includes a fixed frame (410) installed on the side wall of the fixed seat (200), a slide plate (420) located inside the fixed frame (410), a spring (430) installed at the bottom of the slide plate (420), and a limiting rod (440) installed at the top of the slide plate (420), wherein the limiting rod (440) extends through the top of the fixed frame (410) and passes through the limiting plate (330).

4. A ball screw driven telescopic arm according to claim 3, characterized in that: A mounting plate (240) is installed at the front end of the top of the fixed seat (200); a reciprocating threaded rod (250) is rotatably connected to the top of the mounting plate (240); a third pulley (260) is installed at one end of the reciprocating threaded rod (250); a second gear (270) is rotatably connected to the side wall of the mounting plate (240); a fourth pulley (280) is installed on the side wall of the second gear (270); the fourth pulley (280) is connected to the third pulley (260) via a belt; and a lubricating oil tank (290) is installed at the top of the fixed seat (200).

5. A ball screw driven telescopic arm according to claim 4, characterized in that: A first gear (160) matched with the second gear (270) is installed on the side wall of the second pulley (140).

6. A ball screw driven telescopic arm according to claim 5, characterized in that: The lubricating assembly (500) further comprises a fixing pipe (510) mounted on the top of the mounting plate (240), a piston (520) located inside the fixing pipe (510), a first delivery pipe (530) mounted on the side wall of the fixing pipe (510), and a second delivery pipe (540) mounted on the other side wall of the fixing pipe (510), the other end of the first delivery pipe (530) being connected to the lubricating oil tank (290), the first delivery pipe (530) being mounted on the pipe body with a first one-way valve (531), the other end of the second delivery pipe (540) passing through the fixing seat (200) and facing the ball nut (220), the side wall of the piston (520) being mounted with a fixing rod (521), the side end of the fixing rod (521) being provided with a reciprocating threaded hole (522), the reciprocating threaded rod (250) being rotatably extended into the reciprocating threaded hole (522).

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