Piston rod unpacking device

Abstract

The utility model relates to the technical field of piston rod split packing, and disclose a piston rod split packing equipment, including bottom plate and fixed in the mounting box of bottom plate top right side, still include: fixed in the inside upper portion of mounting box servo motor, the upper portion rotationally connected with rotation torque sensor body in mounting box left side of servo motor output shaft penetrates mounting box and is connected with rotation torque sensor body's right side fixedly, the left side fixed of rotation torque sensor body has the mounting seat, the utility model can carry out accurate control to torque, through real -time monitoring dynamic torque data, can in time stop rotating when torque value is close to preset threshold value, ensure the connection between nut and piston rod is reliable and will not appear overload damage, make every piston rod and nut's connection can reach accurate torque requirement, guarantee the assembly quality consistency of product, reduced the product failure risk that leads to torque unqualified, improved the overall quality and reliability of product.

Description

Technical Field

[0001] This utility model relates to the field of piston rod assembly technology, specifically a piston rod assembly device. Background Technology

[0002] The piston rod is an important component in mechanical transmission. It is usually composed of a long rod connected to the piston at one end and plays a role in equipment such as hydraulic cylinders, pneumatic cylinders, or internal combustion engines. When hydraulic oil or gas enters the cylinder, it generates pressure that acts on the piston, pushing the piston to move linearly along the cylinder, thereby driving the piston rod to reciprocate. This realizes the conversion between mechanical energy and pressure energy, and then drives the external load to do work. Piston rod assembly equipment is a special equipment for assembling piston rods with other key components.

[0003] Currently, piston rod assembly equipment often relies on manual experience to judge the tightness when tightening nuts. Operators cannot accurately and consistently control the torque, resulting in a large deviation between the actual tightening torque and the specified standard. It is impossible to monitor the torque value in real time during the tightening process and make timely feedback adjustments. It is difficult to ensure that each nut is tightened to the appropriate torque range. Insufficient tightening torque will cause the nut to loosen easily during subsequent use, while excessive tightening torque will cause the threads of the nut and piston rod to be subjected to excessive compression and shearing forces, which can easily cause thread breakage, that is, the threads are over-compressed and deformed, reducing the thread engagement accuracy and connection strength. Utility Model Content

[0004] The purpose of this invention is to provide a piston rod assembly device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a piston rod disassembly device, comprising a base plate and a mounting box fixed to the top right side of the base plate, and further comprising:

[0006] A servo motor is fixed inside the upper part of the mounting box. A rotary torque sensor body is rotatably connected to the upper left side of the mounting box. The output shaft of the servo motor passes through the mounting box and is fixedly connected to the right side of the rotary torque sensor body. A mounting base is fixed to the left side of the rotary torque sensor body. A slot is opened on the left side surface of the mounting base. A fixing frame is bolted to the middle of the surface of the mounting base. A positioning structure is fixed above the fixing frame. A control panel is installed on the front side of the mounting box.

[0007] A movable platform is set on the left side above the base plate, and a mounting plate is fixed on the top of the movable platform. Electric telescopic rods are fixed on the front and rear sides of the top of the base plate, and the left end of the output shaft of the electric telescopic rod is fixedly connected to the mounting plate. A clamping cylinder is installed on the upper right side of the mounting plate, and a sandwich plate is fixed on the surface of the output shaft on both the front and rear sides of the clamping cylinder. A support platform is slidably connected to the right side of the mounting plate.

[0008] Preferably, the positioning structure includes a mounting platform, a threaded rod, a crank, a movable plate, and a positioning pin. The mounting platform is fixed above the fixed frame. The threaded rod passes through the top of the mounting platform and is threadedly connected to the mounting platform. The crank is fixed to the top of the threaded rod. The movable plate is slidably connected inside the mounting platform, and the bottom end of the threaded rod is rotatably connected to the movable plate. The positioning pin is fixed to the bottom of the movable plate and passes through the interior of the slot and is slidably connected to the mounting base. The positioning pin is used in conjunction with a slot on the side of the piston rod.

[0009] Preferably, guide grooves are provided on both the front and rear sides of the inner wall of the mounting platform, and guide blocks are fixed on both the front and rear sides of the movable plate, with one side of the guide block extending into the interior of the guide groove and slidingly connected to the inner wall of the guide groove.

[0010] Preferably, slide rails are fixed on both the front and rear sides of the top of the base plate, and sliders are bolted to all four sides of the bottom of the moving platform, with the sliders slidably connected to the slide rails.

[0011] Preferably, a small cylinder is fixed to both the front and rear sides of the right side of the mounting plate, and a connecting plate is fixed to the bottom end of the output shaft of the small cylinder, with one side of the connecting plate being fixedly connected to the surface of the support platform.

[0012] Preferably, reinforcing pads are adhered to the opposing surfaces of the sandwich panel, the reinforcing pads are made of rubber, and the opposing surfaces of the reinforcing pads are provided with anti-slip textures.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention enables precise torque control. By monitoring dynamic torque data in real time, it can stop rotation in time when the torque value approaches a preset threshold, ensuring that the connection between the nut and the piston rod is reliable and will not cause overload damage. This ensures that the connection between each piston rod and the nut meets the precise torque requirements, guarantees the consistency of product assembly quality, reduces the risk of product failure due to unqualified torque, and improves the overall quality and reliability of the product. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0017] Figure 3 This is a three-dimensional schematic diagram of the mounting base in this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the positioning structure in this utility model;

[0019] Figure 5 This is a three-dimensional schematic diagram of the mounting plate in this utility model from another perspective.

[0020] In the diagram: 1. Base plate; 2. Mounting box; 3. Rotary torque sensor body; 4. Mounting base; 5. Slot; 6. Fixing frame; 7. Positioning structure; 71. Mounting platform; 72. Threaded rod; 73. Crank; 74. Movable plate; 75. Positioning pin; 8. Control panel; 9. Moving platform; 10. Mounting plate; 11. Electric telescopic rod; 12. Clamping cylinder; 13. Mezzanine plate; 14. Support platform; 15. Guide groove; 16. Guide block; 17. Slide rail; 18. Slider; 19. Small cylinder; 20. Connecting plate; 21. Reinforcing pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5As shown, a piston rod assembly device includes a base plate 1. A mounting box 2 is fixed to the top right side of the base plate 1, and a servo motor is fixed to the upper part inside the mounting box 2. A rotary torque sensor body 3 is rotatably connected to the upper left side of the mounting box 2. The output shaft of the servo motor passes through the mounting box 2 and is fixedly connected to the right side of the rotary torque sensor body 3. A mounting base 4 is fixed to the left side of the rotary torque sensor body 3, and a slot 5 is opened on the left side surface of the mounting base 4. The slot 5 is used to insert one end of the piston rod for positioning. A fixing bracket 6 is bolted to the middle of the surface of the mounting base 4, and the upper part of the fixing bracket 6... The mounting box 2 is fixed with a positioning structure 7. A control panel 8 is installed on the front side of the mounting box 2. A moving platform 9 is set on the left side above the base plate 1. A mounting plate 10 is fixed on the top of the moving platform 9. Electric telescopic rods 11 are fixed on both the front and rear sides of the top of the base plate 1. The left end of the output shaft of the electric telescopic rod 11 is fixedly connected to the mounting plate 10. A clamping cylinder 12 is installed on the upper right side of the mounting plate 10. A sandwich plate 13 is fixed on the surface of the output shaft on both the front and rear sides of the clamping cylinder 12. A support platform 14 is slidably connected to the right side of the mounting plate 10. The support platform 14 is used to place the nut that is installed with the piston rod.

[0023] The positioning structure 7 includes a mounting platform 71, a threaded rod 72, a crank 73, a movable plate 74, and a positioning pin 75. The mounting platform 71 is fixed above the fixed frame 6. The threaded rod 72 passes through the top of the mounting platform 71 and is threadedly connected to the mounting platform 71. The crank 73 is fixed to the top of the threaded rod 72. The movable plate 74 is slidably connected inside the mounting platform 71, and the bottom end of the threaded rod 72 is rotatably connected to the movable plate 74. The positioning pin 75 is fixed to the bottom of the movable plate 74 and passes through the interior of the slot 5, slidingly connecting to the mounting base 4. The positioning pin 75 engages with a slot on the side of the piston rod. Guide grooves 15 are provided on both the front and rear sides of the inner wall of the mounting platform 71. Guide blocks 16 are fixed on both the front and rear sides of the movable plate 74, and one side of the guide block 16 extends into the interior of the guide groove 15 and slides in connection with the inner wall of the guide groove 15. When the operator inserts the end of the piston rod with the slot into the slot 5 on the surface of the mounting base 4, the operator can rotate the upper crank 73, which in turn causes the threaded rod 72 below the crank 73 to rotate, causing the threaded rod 72 to push the movable plate 74 down. The guide blocks 16 on the front and rear sides slide inside the guide groove 15 to guide the movable plate 74, so that the positioning pin 75 enters the interior of the slot 5 and is inserted into the slot on the surface of the piston rod, thereby positioning the piston rod so that the piston rod can be threadedly connected to the nut for subsequent installation.

[0024] The top front and rear sides of the base plate 1 are fixed with slide rails 17, and the four sides of the bottom of the moving platform 9 are bolted with sliders 18, and the sliders 18 are slidably connected to the slide rails 17. When the electric telescopic rods 11 on both sides are opened, the output shaft of the electric telescopic rods 11 pulls the mounting plate 10 to move, and the sliders 18 slide on the surface of the slide rails 17. The setting of the sliders 18 and the slide rails 17 can effectively improve the stability of the mounting plate 10 when it moves to the right. When the mounting seat 4 drives the piston rod to rotate, the nut moves to the right stably, and the nut is installed with the piston rod.

[0025] Small cylinders 19 are fixed to the front and rear sides of the right side of the mounting plate 10. A connecting plate 20 is fixed to the bottom of the output shaft of the small cylinder 19, and one side of the connecting plate 20 is fixedly connected to the surface of the support 14. When installing nuts of different sizes, the height of the support 14 can be adjusted up and down by opening the small cylinder 19 so as to connect with the piston rod.

[0026] Reinforcing pads 21 are bonded to the opposing surfaces of the sandwich plates 13. The reinforcing pads 21 are made of rubber and have anti-slip textures on the opposing surfaces. When the clamping cylinder 12 is opened, the sandwich plates 13 on the front and rear sides move towards each other to clamp the nut. The reinforcing pads 21 improve the clamping and positioning effect of the nut and prevent movement when the nut is connected to the piston rod.

[0027] The control panel 8 is used in conjunction with the servo motor, the rotary torque sensor body 3, the electric telescopic rod 11, the clamping cylinder 12, and the small cylinder 19 inside the mounting box 2.

[0028] Working principle: First, the operator inserts the end of the piston rod with the slot into the slot 5 of the mounting base 4. Then, the crank 73 is rotated, causing the threaded rod 72 to rotate and descend within the mounting platform 71. As the threaded rod 72 pushes the movable plate 74 downward, the guide blocks 16 on both sides slide along the guide grooves 15 of the mounting platform 71, allowing the positioning pin 75 to accurately insert into the piston rod slot to complete axial positioning. At this time, the servo motor in the mounting box 2 is started through the control panel 8, driving the rotational torque sensor body 3 and the mounting base 4 to rotate synchronously, causing the positioned piston rod to rotate. Simultaneously, the operator places the nut to be assembled on the support platform 14, and the clamping cylinder 12 pushes the two side sandwich plates 13 to move towards each other, clamping the nut through the rubber reinforcing pads 21 with anti-slip texture. 9. Adjust the height of the connecting plate 20 according to the nut specifications, drive the support platform 14 to rise and fall to achieve the alignment of the nut center with the piston rod axis. When the electric telescopic rod 11 pushes the mounting plate 10 to the right, the slider 18 at the bottom of the moving platform 9 slides smoothly along the slide rail 17 of the base plate 1 to ensure that the clamped nut contacts the end of the rotating piston rod at a constant speed. During the thread engagement process, the rotation torque sensor body 3 monitors the dynamic torque and rotation angle data in real time. When the torque value reaches the preset threshold, the control panel 8 immediately cuts off the servo motor power and stops the electric telescopic rod 11 from advancing to prevent thread stripping or piston rod deformation. After the assembly is completed, rotate the crank 73 in the opposite direction to make the positioning pin 75 exit the slot, and the clamping cylinder 12 releases the nut, so that the assembled piston rod assembly can be taken out.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piston rod assembly device, comprising a base plate (1) and a mounting box (2) fixed to the top right side of the base plate (1), characterized in that, Also includes: A servo motor is fixed inside the upper part of the mounting box (2). A rotary torque sensor body (3) is rotatably connected to the upper left side of the mounting box (2). The output shaft of the servo motor passes through the mounting box (2) and is fixedly connected to the right side of the rotary torque sensor body (3). A mounting base (4) is fixed on the left side of the rotary torque sensor body (3). A slot (5) is opened on the left side surface of the mounting base (4). A fixing frame (6) is bolted to the middle of the surface of the mounting base (4). A positioning structure (7) is fixed above the fixing frame (6). A control panel (8) is installed on the front side of the mounting box (2). A movable platform (9) is set on the left side above the base plate (1), and a mounting plate (10) is fixed on the top of the movable platform (9). Electric telescopic rods (11) are fixed on both the front and rear sides of the top of the base plate (1), and the left end of the output shaft of the electric telescopic rod (11) is fixedly connected to the mounting plate (10). A clamping cylinder (12) is installed on the upper right side of the mounting plate (10), and a sandwich plate (13) is fixed on the surface of the output shaft on both the front and rear sides of the clamping cylinder (12). A support platform (14) is slidably connected to the right side of the mounting plate (10).

2. The piston rod disassembly device according to claim 1, characterized in that: The positioning structure (7) includes a mounting platform (71), a threaded rod (72), a crank (73), a movable plate (74), and a positioning pin (75). The mounting platform (71) is fixed above the fixed frame (6). The threaded rod (72) is disposed above the mounting platform (71) and is threadedly connected to the mounting platform (71). The crank (73) is fixed at the top of the threaded rod (72). The movable plate (74) is slidably connected inside the mounting platform (71) and is rotatably connected to the bottom of the threaded rod (72). The positioning pin (75) is fixed at the bottom of the movable plate (74) and is slidably connected to the mounting base (4) inside the slot (5). The positioning pin (75) is used in conjunction with the slot on the side of the piston rod.

3. The piston rod disassembly device according to claim 2, characterized in that: The mounting platform (71) has guide grooves (15) on both the front and rear sides of its inner wall. The movable plate (74) has guide blocks (16) fixed on both the front and rear sides. One side of the guide block (16) extends into the interior of the guide groove (15) and slides in connection with the inner wall of the guide groove (15).

4. The piston rod disassembly device according to claim 1, characterized in that: The top front and rear sides of the base plate (1) are fixed with slide rails (17), and the four sides of the bottom of the moving platform (9) are bolted with sliders (18), and the sliders (18) are slidably connected to the slide rails (17).

5. A piston rod disassembly device according to claim 1, characterized in that: Small cylinders (19) are fixed on the front and back sides of the right side of the mounting plate (10). A connecting plate (20) is fixed at the bottom of the output shaft of the small cylinder (19), and one side of the connecting plate (20) is fixedly connected to the surface of the support (14).

6. The piston rod disassembly device according to claim 1, characterized in that: The sandwich panel (13) has a reinforcing pad (21) bonded to the opposite side of each surface. The reinforcing pad (21) is made of rubber and has anti-slip texture on the opposite side of each surface.

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