Adjustable rotating ball spline based on self-locking

Abstract

The invention belongs to the technical field of rotating ball splines, and particularly relates to a self-locking-based adjustable rotating ball spline which comprises a packaging machine and a ball spline mechanism, the packaging machine comprises a supporting plate, a connecting plate, a sliding rail, a sliding block, a fluctuating plate, a driving cavity and a packaging box, and the packaging box comprises a packaging cylinder and a sealing cover; the packaging barrel is in threaded connection with the sealing cover, and a hexagonal hole is formed in the upper surface of the sealing cover; the ball spline mechanism comprises a spline shaft and a ball nut, channels are formed in the two sides of the spline shaft, the ball nut is connected to the outer side of the spline shaft in a sleeving mode through the channels, the upper end of the spline shaft is fixedly connected with the bottom face of the fluctuating plate, the ball nut is installed on the connecting plate through a bearing, and a hexagonal screw block is fixed to the bottom end of the spline shaft. The sliding rail is fixedly installed on the supporting plate, the sliding block is connected into the sliding rail in a sliding mode, and the problem that the packaging efficiency and the packaging quality cannot be improved due to the fact that an existing ball spline is applied to a packaging machine is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary ball splines, and in particular relates to an adjustable rotary ball spline based on self-locking. Background Art

[0002] Rotary ball splines are generally used in medical devices or packaging equipment. The application range of packaging equipment is wide, including packaging boxes with lids. Generally, the product is placed in the packaging box and then the lid is covered. In order to ensure the sealing of the product, the lid is screwed into the box to seal the package through a threaded connection. This type of packaging equipment requires a rotary ball spline, which can move up and down and rotate, and perform efficient automatic self-locking packaging. However, for this packaging method, the locking strength needs to be guaranteed, and generally the locking force is insufficient, resulting in reduced sealing, or the thread connection process of the packaging box is unstable, resulting in thread jamming. This phenomenon has become a problem that needs to be solved urgently by people in this field. Summary of the invention

[0003] The object of the present invention is to provide an adjustable rotary ball spline based on self-locking to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjustable rotary ball spline based on self-locking, comprising a packaging machine and a ball spline mechanism, the packaging machine comprising a support plate, a connecting plate, a slide rail, a slider, an undulating plate, a driving cavity and a packaging box, the packaging box comprising a packaging tube and a sealing cover, the packaging tube is threadedly connected to the sealing cover, and a hexagonal hole is arranged on the upper surface of the sealing cover; The ball spline mechanism includes a spline shaft and a ball nut, grooves are provided on both sides of the spline shaft, the ball nut is sleeved on the outer side of the spline shaft through the grooves, the upper end of the spline shaft is fixedly connected to the bottom surface of the undulating plate, the ball nut bearing is installed on the connecting plate, a hexagonal screw block is fixed to the bottom end of the spline shaft, the slide rail is fixedly installed on the support plate, the slider is slidably connected in the slide rail and is fixedly connected to the undulating plate, the driving chamber is fixedly installed on the support plate and is located below the slide rail, a tooth 1 is fixed on the outer side of the ball nut, a rotating rod is installed on the bottom bearing of the driving chamber, a tooth 2 is fixed on the lower end of the rotating rod, the tooth 2 is meshed with the tooth 1, and a connecting rod is installed on the lower end bearing of the slider.

[0005] The present invention further illustrates that the driving chamber includes a motor and a hydraulic chamber, the rotating rod is fixedly connected to the output end of the motor, the motor is fixedly installed on the top of the inner wall of the driving chamber, the hydraulic chamber is fixedly installed above the inner wall of the driving chamber, and the inner wall of the hydraulic chamber is slidably connected with a hydraulic plate, and the upper and lower parts of the hydraulic chamber are connected to the external hydraulic pump pipeline; A threaded rod is fixed to the lower end of the connecting rod, a threaded hole is arranged in the middle of the hydraulic plate, the threaded rod is threadedly connected in the threaded hole, and the upper and lower parts of the hydraulic plate are filled with hydraulic oil.

[0006] The present invention further illustrates that a support rod is fixed to the bottom end of the threaded rod, an elastic expansion joint is fixed to the lower end of the support rod, a rotating shaft is fixed to the lower end of the elastic expansion joint, a tooth three is fixed to the lower end of the rotating shaft, and the rotating shaft is connected to the bottom bearing of the inner wall of the driving cavity; grooves are provided on the front and rear sides of the hydraulic plate, guide rails are fixed to the front and rear sides of the inner wall of the hydraulic cavity, the hydraulic plate is slidably connected to the guide rails through the grooves, and the tooth three is meshed with tooth two.

[0007] The present invention further illustrates that a socket block and a disc are sleeved on the outer side of the rotating rod, the disc is located above the socket block, and an elastic spring is fixed between the two, a limit block is provided at the bottom of the socket block, and the limit block is fixed to the outer side of the rotating rod, extrusion rods are evenly fixed around the surface of the disc, an arc disc is fixed on the outer side of the support rod, the arc disc is located above the extrusion rod, and the arc disc contacts the extrusion rod after moving downward, and the bottom of the arc disc is arc-shaped.

[0008] The present invention further states that the upper end of the extrusion rod is spherical, and the elasticity of the elastic expansion joint is four times that of the elastic spring.

[0009] The present invention further illustrates that a slide groove is provided on both sides of the rotating rod, the inner wall of the slide groove is slidably connected with a lifting plate, and an impact rod is evenly fixed on the bottom of the lifting plate, and the bottom end of the impact rod is spherical.

[0010] The present invention further describes that the bottom end of the impact rod is in contact with the surface of the disc.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the ball spline adopted by the present invention is applied to the packaging machine to perform self-locking packaging work, and the automated operation is convenient and fast, which improves the packaging efficiency, and by adjusting the speed of the motor, the tightening strength is improved to ensure the quality of the packaging. During the rotation of the second tooth, the connecting rod moves downward, so that the hexagonal screw block can be gradually moved downward. As the sealing cap is connected to the packaging tube, the sealing cap gradually drops, so that the hexagonal screw block drops accordingly to avoid separation, thereby ensuring the locking strength, and when the second tooth drives the third tooth to rotate, through the connection between the threaded rod and the threaded hole, after rotating several circles, the hexagonal screw block will not drop excessively, and keep synchronization, so as to further improve the packaging quality; By slightly shaking the support rod up and down, it is possible to avoid the hexagonal screw block exerting too much pressure on the hexagonal hole of the cover, which would cause a large force to be applied by the motor, thereby preventing an increase in energy consumption. It is also possible to avoid low locking strength leading to poor sealing of the packaging box, thereby improving the packaging quality. By shaking, the force exerted downward by the hexagonal screw block on the hexagonal hole of the cover is first loosened and then tightened. On the one hand, it ensures the rotational force of the cover, thereby improving the locking strength. On the other hand, it avoids the tightness between the threads causing jamming, which affects the smooth operation of the packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the ball spline mechanism of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a schematic diagram of the internal structure of the driving chamber of the present invention; Figure 5 is a plan view of the drive cavity of the present invention; Figure 6 It is a schematic diagram of the rotating rod and the structure on the rotating rod of the present invention; Figure 7 It is a schematic diagram of the internal structure of the hydraulic chamber of the present invention; Figure 8 It is a schematic diagram of the installation position of the disc of the present invention; In the figure: 1. support plate; 2. connecting plate; 3. slide rail; 31. slider; 32. undulating plate; 33. connecting rod; 331. threaded rod; 34. support rod; 341. arc disk; 35. elastic expansion joint; 36. rotating shaft; 37. tooth three; 4. driving chamber; 41. rotating rod; 411. socket block; 412. disc; 413. extrusion rod; 414. slide groove; 415. lifting plate; 416. impact rod; 417. elastic spring; 42. tooth two; 43. motor; 44. hydraulic chamber; 441. hydraulic plate; 442. groove; 443. guide rail; 5. spline shaft; 51. groove; 52. hexagonal screw block; 6. ball nut; 61. tooth one. DETAILED DESCRIPTION

[0013] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. 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.

[0014] See also Figure 1-Figure 8 The present invention provides a technical solution: an adjustable rotary ball spline based on self-locking, including a packaging machine and a ball spline mechanism, the packaging machine includes a support plate 1, a connecting plate 2, a slide rail 3, a slider 31, an undulating plate 32, a driving cavity 4 and a packaging box, the packaging box includes a packaging tube and a sealing cover, the packaging tube is threadedly connected to the sealing cover, and a hexagonal hole is arranged on the upper surface of the sealing cover; The ball spline mechanism includes a spline shaft 5 and a ball nut 6. Grooves 51 are provided on both sides of the spline shaft 5. The ball nut 6 is sleeved on the outer side of the spline shaft 5 through the grooves 51. The upper end of the spline shaft 5 is fixedly connected to the bottom surface of the undulating plate 32. The ball nut 6 is mounted on the connecting plate 2. A hexagonal screw block 52 is fixed to the bottom end of the spline shaft 5. The slide rail 3 is fixedly mounted on the support plate 1. The slider 31 is slidably connected in the slide rail 3 and is fixedly connected to the undulating plate 32. The driving chamber 4 is fixedly mounted on the support plate 1 and is located below the slide rail 3. A tooth 1 61 is fixed on the outer side of the ball nut 6. A rotating rod 41 is installed on the bottom bearing of the driving chamber 4. A tooth 2 42 is fixed on the lower end of the rotating rod 41. The tooth 2 42 is meshed with the tooth 1 61. A connecting rod 33 is installed on the lower end bearing of the slider 31.

[0015] The driving chamber 4 includes a motor 43 and a hydraulic chamber 44. The rotating rod 41 is fixedly connected to the output end of the motor 43. The motor 43 is fixedly installed on the top of the inner wall of the driving chamber 4. The hydraulic chamber 44 is fixedly installed above the inner wall of the driving chamber 4. A hydraulic plate 441 is slidably connected to the inner wall of the hydraulic chamber 44. The upper and lower parts of the hydraulic chamber 44 are connected to the external hydraulic pump pipeline. A threaded rod 331 is fixed to the lower end of the connecting rod 33, a threaded hole is provided in the middle of the hydraulic plate 441, the threaded rod 331 is threadedly connected in the threaded hole, and the upper and lower parts of the hydraulic plate 441 are filled with hydraulic oil; The packaging box is placed on the support plate 1, and then hydraulic oil is injected into the upper part of the hydraulic cavity 44 through an external hydraulic pump, and the hydraulic oil is extracted from the lower part, so that the hydraulic pressure above the hydraulic plate 441 increases and the hydraulic pressure below decreases. The hydraulic plate 441 is forced to slide downward along the inner wall of the hydraulic cavity 44, and the hydraulic plate 441 drives the slider 31 to slide downward along the inner wall of the slide rail 3 through the connecting rod 33. The slider 31 drives the spline shaft 5 to move downward through the undulating plate 32. The spline shaft 5 passes through the grooves 51 on both sides, so that the ball nut 6 rolls on its surface, and the spline shaft 5 drives the hexagonal screw block 52 moves downward until it is inserted into the hexagonal hole of the cover, and then drives the motor 43 to run. The motor 43 drives the tooth 2 42 to rotate through the rotating rod 41. The tooth 2 42 drives the ball nut 6 to rotate by meshing with the tooth 1 61, thereby driving the spline shaft 5 to rotate. The spline shaft 5 drives the hexagonal screw block 52 to rotate, thereby driving the cover to rotate. The cover is connected to the packaging tube through a thread to perform self-locking packaging. The automated operation is convenient and fast, and the packaging efficiency is improved. The speed of the motor 43 is adjusted to increase the tightening strength and ensure the quality of the packaging.

[0016] A support rod 34 is fixed to the bottom end of the threaded rod 331, an elastic expansion joint 35 is fixed to the lower end of the support rod 34, a rotating shaft 36 is fixed to the lower end of the elastic expansion joint 35, a gear 37 is fixed to the lower end of the rotating shaft 36, and the rotating shaft 36 is connected to the inner wall bottom bearing of the driving chamber 4; The front and rear sides of the hydraulic plate 441 are provided with grooves 442, and the inner walls of the hydraulic chamber 44 are fixed with guide rails 443 at the front and rear sides. The hydraulic plate 441 is slidably connected to the guide rails 443 through the grooves 442, and the tooth 37 is meshed with the tooth 2 42; During the rotation of tooth 2 42, tooth 3 37 is driven to rotate through meshing, and tooth 3 37 drives shaft 36 to rotate. Shaft 36 drives support rod 34 to rotate through elastic expansion joint 35, and support rod 34 drives threaded rod 331 and connecting rod 33 to rotate. During the rotation of threaded rod 331, it is connected with threaded hole so that it moves downward while rotating, and the guide rail 443 and groove 442 can prevent hydraulic plate 441 from rotating, so that threaded rod 331 can move downward smoothly. At the same time, elastic expansion joint 35 is pressed to shorten. At this time, downward movement of connecting rod 33 can make hexagonal screw block 52 move downward gradually. As the sealing cap is connected with the packaging tube, the sealing cap gradually descends, so that the hexagonal screw block 52 descends accordingly to avoid disengagement and ensure locking strength. When the second tooth 42 drives the third tooth 37 to rotate, through the connection between the threaded rod 331 and the threaded hole, after rotating several circles, the hexagonal screw block 52 will not drop excessively and maintain synchronization, so as to further improve the packaging quality.

[0017] The outer side of the rotating rod 41 is sleeved with a sleeve block 411 and a disk 412, the disk 412 is located above the sleeve block 411, and a spring 417 is fixed between the two, a limit block is set at the bottom of the sleeve block 411, and the limit block is fixed to the outer side of the rotating rod 41, and extrusion rods 413 are evenly fixed around the surface of the disk 412, and an arc disk 341 is fixed to the outer side of the support rod 34, the arc disk 341 is located above the extrusion rod 413, and the arc disk 341 contacts with the extrusion rod 413 after moving downward, and the bottom of the arc disk 341 is arc-shaped.

[0018] The upper end of the extrusion rod 413 is spherical, and the elasticity of the elastic expansion joint 35 is four times that of the elastic spring 417; During the packaging process, the cover rotates and is tightly connected to the packaging tube, and the hexagonal screw block 52 slowly descends through the meshing of the second tooth 42 and the third tooth 37. At this time, the support rod 34 drives the arc disk 341 to move downward and contact the upper end of the extrusion rod 413. At the same time, the rotating rod 41 is in a rotating state, and the extrusion rod 413 is driven to rotate through the disc 412. When the extrusion rod 413 rotates to contact the arc disk 341, it squeezes and rubs against the arc-shaped part at the bottom of the arc disk 341. Due to the large elasticity of the elastic expansion joint 35 and the small elasticity of the elastic spring 417, the arc disk 341 presses the extrusion rod 413, and the extrusion rod 413 presses the elastic spring 417 to deform through the disc 412. At the same time, the arc disc 341 is subjected to an upward force, so that it moves slightly upward. Then, the extrusion rod 413 is separated from the arc disc 341, and the elastic expansion joint 35 is deformed and reset, so that the support rod 34 slightly shakes up and down, which can prevent the hexagonal screw block 52 from exerting a large pressure on the hexagonal hole of the cover, resulting in a large force required to be applied by the motor 43, prevent the increase of energy consumption, and prevent the poor sealing of the packaging box caused by low locking strength, thereby improving the packaging quality; By shaking, the force applied downward by the hexagonal screw block 52 to the hexagonal hole of the cover is loosened first and then tightened. On the one hand, the rotational force of the cover is guaranteed, thereby improving the locking strength. On the other hand, it avoids the tightness between the threads causing jamming and affecting the smooth operation of the package.

[0019] Slide grooves 414 are provided on both sides of the rotating rod 41 , and a lifting plate 415 is slidably connected to the inner wall of the slide groove 414 . An impact rod 416 is evenly fixed to the bottom of the lifting plate 415 , and the bottom end of the impact rod 416 is spherical.

[0020] The bottom end of the impact rod 416 is in contact with the surface of the disc 412; Through the above steps, when the disc 412 is forced to move downward, the elastic spring 417 is deformed by the force, and when the extrusion rod 413 is out of contact with the arc disc 341, the elastic spring 417 generates a reaction force, pushing the disc 412 to move upward quickly, and hits the impact rod 416 at the bottom of the lifting plate 415. The lifting plate 415 is forced to slide on the slide groove 414, then resets downward, and hits the disc 412 again. The double impact causes the packaging machine to vibrate as a whole. During the vibration, the threaded part connecting the cap and the packaging tube can be relatively loosened, thereby further avoiding jamming and improving packaging fluency.

[0021] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable rotating ball spline based on self-locking, comprising a packaging machine and a ball spline mechanism, characterized in that: The packaging machine comprises a support plate (1), a connecting plate (2), a slide rail (3), a slider (31), an undulating plate (32), a drive chamber (4), and a packaging box; the packaging box comprises a packaging tube and a sealing cover; the packaging tube is threadably connected to the sealing cover, and a hexagonal hole is provided on the upper surface of the sealing cover; The ball spline mechanism comprises a spline shaft (5) and a ball nut (6), grooves (51) are provided on both sides of the spline shaft (5), the ball nut (6) is sleeved on the outer side of the spline shaft (5) through the grooves (51), the upper end of the spline shaft (5) is fixedly connected to the bottom surface of the undulating plate (32), the bearing of the ball nut (6) is mounted on the connecting plate (2), the bottom end of the spline shaft (5) is fixedly provided with a hexagonal screw block (52), the slide rail (3) is fixedly mounted on the support plate (1), and the slide block (31) is slidably connected in the slide rail (3) and fixedly connected to the undulating plate (32); the driving chamber (4) is fixedly mounted on the support plate (1) and is located below the slide rail (3); a tooth 1 (61) is fixedly mounted on the outer side of the ball nut (6); a rotating rod (41) is mounted on the bottom bearing of the driving chamber (4); a tooth 2 (42) is fixedly mounted on the lower end of the rotating rod (41); the tooth 2 (42) and the tooth 1 (61) are meshed with each other; a connecting rod (33) is mounted on the lower end bearing of the slider (31).

2. The self-locking adjustable rotating ball spline according to claim 1, characterized in that: The driving chamber (4) comprises a motor (43) and a hydraulic chamber (44), the rotating rod (41) is fixedly connected to the output end of the motor (43), the motor (43) is fixedly mounted on the top of the inner wall of the driving chamber (4), the hydraulic chamber (44) is fixedly mounted above the inner wall of the driving chamber (4), and a hydraulic plate (441) is slidably connected to the inner wall of the hydraulic chamber (44), and the upper and lower parts of the hydraulic chamber (44) are connected to an external hydraulic pump pipeline; A threaded rod (331) is fixed to the lower end of the connecting rod (33), a threaded hole is provided in the middle of the hydraulic plate (441), the threaded rod (331) is threadedly connected in the threaded hole, and hydraulic oil is filled above and below the hydraulic plate (441).

3. The self-locking adjustable rotating ball spline according to claim 2, characterized in that: A support rod (34) is fixed to the bottom end of the threaded rod (331), an elastic expansion joint (35) is fixed to the lower end of the support rod (34), a rotating shaft (36) is fixed to the lower end of the elastic expansion joint (35), a gear (37) is fixed to the lower end of the rotating shaft (36), and the rotating shaft (36) is connected to a bearing at the bottom of the inner wall of the driving chamber (4); The front and rear sides of the hydraulic plate (441) are both provided with grooves (442), the front and rear inner walls of the hydraulic chamber (44) are both fixed with guide rails (443), the hydraulic plate (441) is slidably connected to the guide rails (443) via the grooves (442), and the tooth three (37) is meshed with the tooth two (42).

4. The self-locking adjustable rotating ball spline according to claim 3 is characterized in that: The outer side of the rotating rod (41) is sleeved with a sleeve block (411) and a disc (412); the disc (412) is located above the sleeve block (411), and a spring (417) is fixed between the sleeve block (411); a limit block is provided at the bottom of the sleeve block (411), and the limit block is fixed to the outer side of the rotating rod (41); extrusion rods (413) are evenly fixed around the surface of the disc (412); an arc disc (341) is fixed to the outer side of the support rod (34); the arc disc (341) is located above the extrusion rod (413), and the arc disc (341) contacts the extrusion rod (413) after moving downward; the bottom of the arc disc (341) is arc-shaped.

5. The self-locking adjustable rotating ball spline according to claim 4, characterized in that: The upper end of the extrusion rod (413) is spherical, and the elasticity of the elastic expansion joint (35) is four times the elasticity of the elastic spring (417).

6. The self-locking adjustable rotating ball spline according to claim 5, characterized in that: The left and right sides of the rotating rod (41) are both provided with sliding grooves (414), the inner wall of the sliding groove (414) is slidably connected to a lifting plate (415), and the bottom of the lifting plate (415) is evenly fixed with impact rods (416), and the bottom end of the impact rod (416) is spherical.

7. The self-locking adjustable rotating ball spline according to claim 6, characterized in that: The bottom end of the impact rod (416) is in contact with the surface of the disc (412).

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