A new type of automatic capping machine with adaptive valve cap size

Abstract

The present invention relates to the technical field of automatic capping machines, and specifically to a novel automatic capping machine with adaptive valve cover size, comprising: a support frame, a first support rod which can move up and down is installed at the center position of the top and bottom surfaces of the support frame; a ball assembly, the ball assembly is brakeably installed at the center position of the bottom of the first support rod, and a second support rod is installed at the center position of the lower end of the ball assembly; a U-shaped rod assembly, the number of the U-shaped rod assemblies is multiple, all are symmetrically and can be arranged on the surface of the first support rod in a form of expandable sideways, the surface of the second support rod is provided with an annular groove for embedding one end of the U-shaped rod assembly, and the lower end of the second support rod is installed with a horizontally rotatable protective shell. The present invention solves the problem that the valve cover is tilted when placed on the valve body, and directly rotating the valve cover will cause the valve cover to fail to install.

Description

Technical Field

[0001] The invention relates to the technical field of automatic capping machines, in particular to a novel automatic capping machine capable of self-adapting to valve cover sizes. Background Art

[0002] The valve cover is a valve part equipped with a valve stem seal, which is used to connect or support the actuator. Threaded connection is a common way to connect the valve body and the valve cover. This connection method is characterized by simple connection, convenient disassembly, and easy maintenance. At the same time, the threaded connection also has good sealing performance and can be used in some low-pressure and small-caliber occasions. This connection method can use an automatic capping machine to tighten the valve cover to the valve body.

[0003] There are some regular valve covers such as circles or regular polygons. When used in different environments or installed on different types of valve bodies, the sizes are not exactly the same. The surface of the valve cover is usually set to an internal thread, and the opening where the valve body and the valve cover are connected is usually set to an external thread. The thread is spirally arranged, not horizontal. When the valve cover is directly placed on the valve body, the internal thread and the external thread contact each other, so that the valve cover will be slightly tilted along the height difference of a single circle of the thread. If the valve cover is rotated directly, it will not be able to be tightened, resulting in failure of the valve cover installation. For this reason, it is necessary to design a new automatic capping machine with adaptive valve cover size. Summary of the invention

[0004] The purpose of the present invention is to provide a novel automatic capping machine with self-adaptive valve cover size, so as to solve the problem that the valve cover is tilted when placed on the valve body and directly rotating the valve cover will cause the valve cover installation failure.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A new type of automatic capping machine with adaptive valve cover size, including:

[0007] A support frame, wherein a first support rod movable up and down is installed at the center of the top and bottom surfaces of the support frame;

[0008] A ball assembly, the ball assembly is brakeably mounted at the bottom center of the first support rod, and a second support rod is mounted at the lower center of the ball assembly;

[0009] A U-shaped rod assembly, wherein the number of the U-shaped rod assemblies is multiple, and the U-shaped rod assemblies are symmetrically arranged on the surface of the first support rod in a form that can be expanded to the side, and the surface of the second support rod is provided with an annular embedding groove for one end of the U-shaped rod assembly to be embedded, and the lower end of the second support rod is provided with a horizontally rotatable protective shell, and the surface of the protective shell is provided with a plurality of threaded rods arranged in an annular array, and the surface of each of the threaded rods is provided with a movable ring that can move along the surface of the threaded rod;

[0010] A valve cover fixing assembly, wherein the valve cover fixing assembly is mounted on the surface of the moving ring, a correction block is fixedly mounted at the center of the bottom surface of the protective shell, and the top surface of the valve cover fixing assembly and the bottom surface of the correction block are located on the same horizontal plane;

[0011] The valve body clamping assembly is symmetrically mounted on the bottom top surface of the support frame.

[0012] Preferably, the ball assembly includes a rolling ball and a connecting block, the rolling ball is movably connected to the bottom surface of the first support rod, the top surface of the connecting block is fixedly connected to the rolling ball, and the bottom surface is fixedly connected to the second support rod, and the connecting block is an inverted frustum-shaped block, a vertically placed third electric push rod is fixedly installed inside the first support rod, and an L-shaped rod is fixedly installed at the telescopic end of the third electric push rod, and one end of the L-shaped rod can contact the bottom surface of the rolling ball.

[0013] Preferably, the U-shaped rod assembly includes a toggle block, a reinforcement plate and a positioning plate, one end of the reinforcement plate is fixedly connected to the toggle block, and the other end is fixedly connected to the positioning plate, one end of the toggle block is located below the third electric push rod, and the surface of the first support rod is provided with a rotating groove for rotation of the toggle block, the reinforcement plate and the first support rod are rotatably connected, and the axis for rotation between the reinforcement plate and the first support rod is located close to one end of the toggle block, and the annular groove is for the positioning plate to be embedded.

[0014] Preferably, the valve body clamping assembly includes a first electric push rod and a clamping plate, the first electric push rod is fixedly mounted on the surface of the support frame, and the telescopic end of the first electric push rod is fixedly connected to the clamping plate, a second electric push rod is installed at the center position of the top bottom surface of the support frame, and the telescopic end of the second electric push rod is fixedly connected to the top surface of the first support rod, a third motor is fixedly mounted at the center position of the bottom surface of the second support rod, and a third support rod is fixedly mounted at the output end of the third motor, a fourth support rod is fixedly mounted at the center position of the bottom surface of the third support rod, a protective shell is fixedly mounted on the surface of the fourth support rod, and a correction block is fixedly mounted at the center position of the bottom end of the fourth support rod.

[0015] Preferably, a first motor is fixedly installed between the third support rod and the fourth support rod, the surface of the fourth support rod is rotatably connected to the first bevel gear, the output end of the first motor is fixedly connected to the first bevel gear, one end of each of the threaded rods is fixedly installed with a second bevel gear, each of the second bevel gears is rotatably connected to the protective shell, and each second bevel gear is meshingly connected to the first bevel gear.

[0016] Preferably, the valve cover fixing assembly includes a plurality of fixed blocks rotatably connected to each other, one end of each of the fixed blocks is fixedly connected to a first rotating block, and the other end is fixedly connected to a second rotating block, the second rotating block on each of the fixed blocks is rotatably connected to the first rotating block on another fixed block, the surface of the second rotating block is fixedly connected to a rotating shaft, and the rotating shaft moves through the surface of the first rotating block, the surface of the first rotating block is fixedly connected to a return torsion spring, and one end of the return torsion spring is fixedly connected to the second rotating block.

[0017] Preferably, a telescopic sleeve is fixedly connected to the top of the first rotating block, a telescopic rod which can move up and down is connected to the top of the telescopic sleeve, a pushing rod is fixedly connected to the surface of the telescopic rod, a pressing block which can contact the pushing rod is movably connected to the surface of the first rotating block, and one end of the pressing block is an inclined surface, a friction ring is fixedly connected to the surface of the rotating shaft, and the pressing block can contact the friction ring, a sliding block is fixedly connected to the surface of the first rotating block, a sliding groove is provided on the surface of the pressing block for the sliding block to slide, and a reset spring is fixedly connected between the inner wall of the sliding groove and the sliding block.

[0018] Preferably, the upper end of each telescopic rod is fixedly connected to a downward pressure rod, a connecting plate is rotatably connected between every two downward pressure rods, the bottom end of each movable ring is fixedly connected to a vertically placed fourth electric push rod, and the output end of the fourth electric push rod is fixedly connected to the downward pressure rod located in the middle position, and the surface of each fixed block is fixedly connected to a friction pad.

[0019] Preferably, the valve cover fixing assembly includes a plurality of friction blocks, the bottom end of each of the movable rings is fixedly connected to a connecting rod, the bottom end of each of the connecting rods is fixedly connected to one of the friction blocks, the surface of one of the connecting rods is fixedly connected to a positioning frame, one end of the positioning frame is fixedly connected to an unwinding frame, the surface of the unwinding frame is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a reel on the unwinding frame, a tensioning rope is strung between each of the friction blocks, and the end of the tensioning rope is fixed to the reel of the unwinding frame.

[0020] A method for using the novel automatic capping machine with adaptive valve cover size, the specific steps are as follows:

[0021] A. Place the valve body on the surface of the support frame, start the two first electric push rods at the same time, drive the two clamping plates to move towards each other, clamp the valve body, and place the valve cover on the valve body;

[0022] B. Start the extension of the second electric push rod. Before the correction block contacts the valve cover, start the extension of the third electric push rod, so that the reinforcement plate is expanded outward and the positioning plate is moved out of the annular groove. Then stop the third electric push rod.

[0023] C. Then the correction block contacts the valve cover until the bottom surface is flush with the valve cover surface. The second support rod, the third motor, the first motor, the fourth support rod and the protective shell will tilt according to the correction block's adaptive valve cover tilt angle, and the second electric push rod will stop.

[0024] D. Then start the first motor to drive the threaded rod to rotate, so that the moving ring moves in the direction of the valve cover, and drives the valve cover fixing assembly to move until the valve cover fixing assembly fixes the valve cover;

[0025] E. Then start the second electric push rod to retract, so that the valve cover leaves the valve body. At this time, start the third electric push rod to retract, driving the L-shaped rod to press against the bottom surface of the rolling ball, and the positioning plate automatically embeds into the annular groove under gravity;

[0026] F. Finally, start the second electric push rod to extend, move the valve cover to the valve body, and start the third motor to rotate the valve cover fixing assembly and the valve cover to complete the installation of the valve cover on the valve body.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. By providing a rolling ball and a connecting block, the rolling ball and the first support rod are connected by a ball, so that the first support rod and the second support rod can rotate and turn freely, so that the second support rod, the third motor, the first motor, the fourth support rod, the protective shell, and the correction block can be adapted to the inclination of the valve cover, and the valve cover can be moved upward by the device, so that the valve cover droops vertically under the action of gravity, and the L-shaped rod is pressed against the bottom surface of the rolling ball to limit the movement of the rolling ball, so that the relative position between the first support rod and the second support rod is fixed, so that the valve cover is horizontal, and then the valve cover is installed, so that the valve cover can be installed smoothly;

[0029] 2. By providing the toggle block, the reinforcement plate and the positioning plate, the reinforcement plate and the positioning plate can be unfolded without hindering the rotation of the second support rod. When the rolling ball is held and fixed by the L-shaped rod, the positioning plate can be embedded in the annular groove, so that the reinforcement plate connects the first support rod and the second support rod, which can reduce the risk of the first support rod and the second support rod being too low in strength and easy to break when simply connecting the first support rod and the second support rod with the rolling ball and the connecting block, and is conducive to increasing the strength of the connection between the first support rod and the second support rod;

[0030] 3. By providing a valve cover fixing assembly, the valve cover fixing assembly can be moved toward or away from the valve cover by rotating the threaded rod, and the position of the valve cover fixing assembly can be changed according to the size of the valve cover. Then, the valve cover fixing assembly can be used to fix the valve cover by pressing the surface of the valve cover from all sides of the valve cover, which is conducive to fixing valve covers of different sizes and performing the cover screwing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the protective shell cut away in the present invention;

[0033] Figure 3 It is a schematic structural diagram of a cutaway section of the first support rod of the present invention;

[0034] Figure 4 This is a structural schematic diagram of a valve cover fixing assembly according to Embodiment 1 of the present invention;

[0035] Figure 5 It is a schematic structural diagram of a cutaway connecting plate of the present invention;

[0036] Figure 6 It is a schematic structural diagram of a cutaway fixed block of the present invention;

[0037] Figure 7 It is a schematic structural diagram of a cutaway section of the second rotating block of the present invention;

[0038] Figure 8 It is a schematic structural diagram of a cutaway section of the first rotating block of the present invention;

[0039] Fig. 9 For the present invention Figure 8 The enlarged view of point A in the middle;

[0040] Fig.10 It is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0041] Fig.11 This is a schematic structural diagram of a valve cover fixing assembly according to Embodiment 2 of the present invention;

[0042] Fig.12 It is a structural schematic diagram of the unwinding frame of the present invention.

[0043] In the figure: 1, support frame; 2, first electric push rod; 3, clamping plate; 4, second electric push rod; 5, first support rod; 6, third electric push rod; 7, L-shaped rod; 8, rotating groove; 9, toggle block; 10, reinforcement plate; 11, positioning plate; 12, rolling ball; 13, connecting block; 14, second support rod; 15, annular groove; 16, third support rod; 17, first motor; 18, fourth support rod; 19, first bevel gear; 20, second bevel gear; 21, threaded rod; 22, protective shell; 23, moving ring; 24, first Four electric push rods; 25, connecting plate; 26, pressing rod; 27, telescopic rod; 28, pushing rod; 29, telescopic sleeve; 30, first rotating block; 31, fixed block; 32, friction pad; 33, second rotating block; 34, rotating shaft; 35, friction ring; 36, reset torsion spring; 37, pressing block; 38, sliding block; 39, reset spring; 40, sliding groove; 41, connecting rod; 42, friction block; 43, tightening rope; 44, unwinding frame; 45, positioning frame; 46, second motor; 47, correction block; 48, third motor. DETAILED DESCRIPTION

[0044] 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.

[0045] Embodiment 1:

[0046] See also Figures 1 to 12The present invention provides a technical solution: a novel automatic capping machine for self-adapting valve cover size, comprising: a support frame 1; a first support rod 5 which can move up and down is installed at the center position of the top and bottom surfaces of the support frame 1, so that the structure connected to the lower end of the first support rod 5 can move up and down; a ball assembly, the ball assembly can be braked and installed at the center position of the bottom of the first support rod 5, when the ball assembly is released, the rolling ball 12 can roll in the first support rod 5, after the rolling ball 12 is braked, the movement of the rolling ball 12 can be stopped, so that the structure at the lower end of the ball assembly is fixed, and a second support rod 14 is installed at the center position of the lower end of the ball assembly; a U-shaped rod assembly, the number of U-shaped rod assemblies is multiple, all of which are symmetrically and can be arranged on the surface of the first support rod 5 in a form that can be expanded to the side, the U-shaped rod assembly can release the restriction on the second support rod 14 after expansion, and can increase the first support rod 5 and the second support rod after closing. In order to improve the strength of the connection between the rods 14, an annular groove 15 is provided on the surface of the second support rod 14 for embedding one end of the U-shaped rod assembly; a horizontally rotatable protective shell 22 is installed at the lower end of the second support rod 14 to realize the operation of screwing the valve cover fixing assembly, and a plurality of threaded rods 21 are arranged in an annular array on the surface of the protective shell 22, and a movable ring 23 which can move along the surface of the threaded rod 21 is installed on the surface of each threaded rod 21, and the valve cover fixing assembly is driven to move toward the valve cover by moving the movable ring 23; the valve cover fixing assembly, the valve cover fixing assembly is installed on the surface of the movable ring 23; a correction block 47 is fixedly installed at the center position of the bottom surface of the protective shell 22, and the top surface of the valve cover fixing assembly and the bottom surface of the correction block 47 are located on the same horizontal plane; the valve body clamping assembly, the valve body clamping assembly is symmetrically installed on the bottom top surface of the support frame 1; the entire equipment is symmetrically arranged, which is conducive to controlling the center of gravity of the equipment to be located at the center.

[0047] Furthermore, the ball assembly includes a rolling ball 12 and a connecting block 13, the rolling ball 12 is movably connected to the bottom surface of the first support rod 5, the top surface of the connecting block 13 is fixedly connected to the rolling ball 12, and the bottom surface is fixedly connected to the second support rod 14, and the connecting block 13 is an inverted truncated cone block, the interior of the first support rod 5 is fixedly installed with a vertically placed third electric push rod 6, and the telescopic end of the third electric push rod 6 is fixedly installed with an L-shaped rod 7, one end of the L-shaped rod 7 can contact the bottom surface of the rolling ball 12, the connecting block 13 is an inverted truncated cone shape, so that the further the L-shaped rod 7 goes down, the greater the distance between it and the surface of the connecting block 13, so that the second support rod 14 can rotate more, the U-shaped rod assembly includes a toggle block 9, a reinforcing plate 10 and a positioning plate 11, one end of the reinforcing plate 10 is fixedly connected to the toggle block 9, The other end is fixedly connected to the positioning plate 11, one end of the toggle block 9 is located below the third electric push rod 6, and a rotating groove 8 for the toggle block 9 to rotate is provided on the surface of the first support rod 5. The reinforcing plate 10 and the first support rod 5 are rotatably connected, and the axis for rotation between the reinforcing plate 10 and the first support rod 5 is located at one end close to the toggle block 9. The annular groove 15 is for the positioning plate 11 to be embedded. Since the annular groove 15 is annular, the second support rod 14 can be rotated at any angle, and the positioning plate 11 can be embedded in the annular groove 15 and connected through the reinforcing plate 10, which can reduce the risk of low strength and easy breakage of the first support rod 5 and the second support rod 14 connected by simply using the rolling ball 12 and the connecting block 13, and increase the strength of the connection between the first support rod 5 and the second support rod 14.

[0048] Furthermore, the valve body clamping assembly includes a first electric push rod 2 and a clamping plate 3, the first electric push rod 2 is fixedly installed on the surface of the support frame 1, and the telescopic end of the first electric push rod 2 is fixedly connected to the clamping plate 3, the first electric push rod 2 pushes the clamping plate 3 to move toward the valve body, thereby clamping the valve body, a second electric push rod 4 is installed at the center position of the top bottom surface of the support frame 1, and the telescopic end of the second electric push rod 4 is fixedly connected to the top surface of the first support rod 5, a third motor 48 is fixedly installed at the center position of the bottom surface of the second support rod 14, and a third support rod 16 is fixedly installed at the output end of the third motor 48, a fourth support rod 18 is fixedly installed at the center position of the bottom surface of the third support rod 16, a protective shell 22 is fixedly installed on the surface of the fourth support rod 18, and the bottom center position of the fourth support rod 18 is fixedly installed A correction block 47 is installed, and the third support rod 16 is driven to rotate by starting the third motor 48, and the third support rod 16 drives the fourth support rod 18 to rotate, so that the protective shell 22 rotates, and the first motor 17 is fixedly installed between the third support rod 16 and the fourth support rod 18, and the surface of the fourth support rod 18 is rotatably connected with the first bevel gear 19, and the output end of the first motor 17 is fixedly connected with the first bevel gear 19, and one end of each threaded rod 21 is fixedly installed with a second bevel gear 20, and each second bevel gear 20 is rotatably connected with the protective shell 22, and each second bevel gear 20 is meshed with the first bevel gear 19, and the first motor 17 is started to drive the first bevel gear 19 to rotate, and the rotation of the first bevel gear 19 causes the second bevel gear 20 to rotate, and the second bevel gear 20 drives the threaded rod 21 to rotate;

[0049] Specifically, the valve body is placed on the surface of the support frame 1, and two symmetrically arranged first electric push rods 2 are started at the same time to drive the two clamping plates 3 to move toward each other until the two clamping plates 3 clamp the valve body, and then the valve cover is placed on the valve body, and the second electric push rod 4 is started to extend to drive the first support rod 5, the second support rod 14, the third motor 48, the first motor 17, the fourth support rod 18, the protective shell 22, and the correction block 47 to move downward until one side of the correction block 47 contacts the valve cover, and then the third electric push rod 6 is started to extend to drive the L-shaped rod 7 to move downward. When the telescopic end of the third electric push rod 6 touches the toggle block 9, the continued extension will push the toggle block 9 to rotate along The track rotation of the groove 8 and the rotation of the toggle block 9 will drive the reinforcing plate 10 to expand outward and drive the positioning plate 11 to move out of the annular groove 15. At this time, through the connection between the rolling ball 12 and the first support rod 5, the first support rod 5 and the second support rod 14 can rotate freely. When the valve cover is placed on the valve body and is tilted, the correction block 47 contacts the valve cover and continues to move downward to make its bottom surface flush with the surface of the valve cover. At this time, in order to adapt to the tilt of the valve cover, under the connection relationship between the rolling ball 12 and the first support rod 5, the second support rod 14, the third motor 48, the first motor 17, the fourth support rod 18, and the protective shell 22 will follow the correction block 47 to tilt adaptively;

[0050] By starting the first motor 17, the first bevel gear 19 is driven to rotate, and the first bevel gear 19 drives the multiple second bevel gears 20 to rotate synchronously. The rotation of the multiple second bevel gears 20 respectively drives the multiple threaded rods 21 to rotate. Through the threaded connection between the threaded rods 21 and the moving ring 23, the rotation of the multiple threaded rods 21 drives the multiple moving rings 23 to move toward the valve cover at the same time. The movement of the moving ring 23 drives the valve cover fixing assembly to move until the valve cover fixing assembly clamps the valve cover;

[0051] Then, the second electric push rod 4 is retracted, so that the valve cover fixing assembly moves upward with the valve cover. When the valve cover leaves the valve body, the second support rod 14, the third motor 48, the first motor 17, the fourth support rod 18, the protective shell 22, and the correction block 47 will droop vertically due to gravity. At this time, the third electric push rod 6 is retracted, driving the L-shaped rod 7 to press against the bottom surface of the rolling ball 12, restricting the movement of the rolling ball 12, so that the relative position between the first support rod 5 and the second support rod 14 is fixed, and the third electric push rod 6 will be separated from the toggle block 9 when retracted, and the reinforcing plate 10 and the positioning plate 11 will be closed under the action of gravity, and the positioning plate 11 will be embedded in the annular groove 15;

[0052] Then, the second electric push rod 4 is extended to move the valve cover onto the valve body, and the third motor 48 is started to drive the first motor 17, the fourth support rod 18, the protective shell 22, the correction block 47, the valve cover fixing assembly, and the valve cover to rotate, so that the valve cover is installed on the valve body;

[0053] Furthermore, the valve cover installation assembly includes a plurality of fixed blocks 31 rotatably connected to each other, one end of each fixed block 31 is fixedly connected to the first rotating block 30, and the other end is fixedly connected to the second rotating block 33, the second rotating block 33 on each fixed block 31 is rotatably connected to the first rotating block 30 on another fixed block 31, the surface of the second rotating block 33 is fixedly connected to the rotating shaft 34, and the rotating shaft 34 moves through the surface of the first rotating block 30, each fixed block 31 rotates with respect to the rotating shaft 34 as the axis, and the surface of the first rotating block 30 A return torsion spring 36 is fixedly connected, and one end of the return torsion spring 36 is fixedly connected to the second rotating block 33, so that the fixed block 31 can be reset under the elastic force of the return torsion spring 36 after losing pressure. The top of the first rotating block 30 is fixedly connected to a telescopic sleeve 29, and the top of the telescopic sleeve 29 is connected to a telescopic rod 27 that can move up and down. The surface of the telescopic rod 27 is fixedly connected to a push rod 28. The surface of the first rotating block 30 is movably connected to a pressing block 37 that can contact the push rod 28, and one end of the pressing block 37 is an inclined surface. The surface of the rotating shaft 34 The first rotating block 30 is fixedly connected with a friction ring 35, and the pressing block 37 can contact the friction ring 35. By moving the push rod 28 downward, the pressing block 37 is pushed to press against the friction ring 35 to limit the rotation of the rotating shaft 34, so that the two fixed blocks 31 are fixed to each other. The surface of the first rotating block 30 is fixedly connected with a sliding block 38. The surface of the pressing block 37 is matched with a sliding groove 40 for the sliding block 38 to slide, and a reset spring 39 is fixedly connected between the inner wall of the sliding groove 40 and the sliding block 38. By setting the reset spring 39, the pressing block 37 can be reset after losing pressure. Automatic reset, the upper end of each telescopic rod 27 is fixedly connected to a pressing rod 26, and a connecting plate 25 is rotatably connected between every two pressing rods 26. The bottom end of each movable ring 23 is fixedly connected to a fourth electric push rod 24 placed vertically, and the output end of the fourth electric push rod 24 is fixedly connected to the pressing rod 26 located in the middle, and the surface of each fixed block 31 is fixedly connected to a friction pad 32. By setting the connecting plate 25, when the fourth electric push rod 24 is extended to press down one of the pressing rods 26, the remaining pressing rods 26 will also move downward;

[0054] Specifically, when the valve cover mounting assembly is driven by the moving ring 23 to move toward the valve cover, the outermost fixed block 31 on it will be blocked after contacting the valve cover, and will rotate with the adjacent second fixed block 31, and the reset torsion spring 36 will be twisted to store elastic potential energy. At this time, the connecting plate 25 and the lower pressure rod 26 will also rotate until the second fixed block 31 contacts the valve cover, and then it will be blocked, so that it will rotate with the adjacent third fixed block 31 until the third fixed block 31 contacts the valve cover, and the above phenomenon will be repeated until all the fixed blocks 31 contact the valve cover, and the friction pad 32 can increase the friction between the fixed block 31 and the valve cover, and then the first motor 17 is turned off to stop the movement of the moving ring 23.

[0055] By starting the fourth electric push rod 24 to extend, the connecting plate 25 and the pressing rod 26 are driven to move downward. Due to the large friction between the fixed block 31 and the valve cover, the downward movement of the pressing rod 26 will bring the telescopic rod 27 downward, and the telescopic rod 27 will drive the pushing rod 28 downward. After the pushing rod 28 moves downward and touches the pressing block 37, it will push the pressing block 37 to move toward the friction ring 35, so that the sliding block 38 moves along the track of the sliding groove 40 and compresses the return spring 39 to store elastic potential energy until it abuts against the surface of the friction ring 35, limiting the rotation between the second rotating block 33 and the first rotating block 30, so that the fixing blocks 31 are fixed to each other, thereby fixing the valve cover. At this time, when the rotating valve cover fixing assembly drives the valve cover to rotate, the fixing blocks 31 rotate relative to each other, resulting in an unstable fixation of the valve cover.

[0056] When the valve cover is installed, the fourth electric push rod 24 is started to retract, and the push rod 28 is moved upward, and the pressing block 37 is reset under the elastic force of the reset spring 39. When the fixed block 31 is separated from the valve cover, the fixed block 31 is retracted inward and reset under the elastic force of the reset torsion spring 36.

[0057] Embodiment 2:

[0058] See also Figure 2 , Figure 3 , Figures 10 to 12 The novel automatic capping machine with adaptive valve cover size disclosed in the second embodiment of the present invention has a structure that is basically the same as that in the first embodiment, except that the valve cover mounting assembly includes a plurality of friction blocks 42, the bottom end of each movable ring 23 is fixedly connected to a connecting rod 41, the bottom end of each connecting rod 41 is fixedly connected to one of the friction blocks 42, a positioning frame 45 is fixedly connected to the surface of one of the connecting rods 41, one end of the positioning frame 45 is fixedly connected to an unwinding frame 44, a second motor 46 is fixedly connected to the surface of the unwinding frame 44, and the output end of the second motor 46 is fixedly connected to the reel on the unwinding frame 44, a tension rope 43 is strung between each friction block 42, and the end of the tension rope 43 is fixed to the reel of the unwinding frame 44;

[0059] The present solution is specifically as follows: when the valve cover installation assembly is driven by the moving ring 23 to move toward the valve cover, the moving ring 23 drives the connecting rod 41 to move, and the connecting rod 41 drives the friction block 42, the unwinding frame 44, and the positioning frame 45 installed on the connecting rod 41 to move, and the other friction blocks 42 are also moved toward the direction of the valve cover under the traction of the tension rope 43. When all the friction blocks 42 installed on the connecting rod 41 are in contact with the valve cover, the tension rope 43 is tightened by starting the second motor 46 to reel, and all the friction blocks 42 are in contact with the valve cover under the pulling of the tension rope 43, so as to fix the valve cover;

[0060] A method for using a new type of automatic capping machine with adaptive valve cover size, the specific steps are as follows:

[0061] A. Place the valve body on the surface of the support frame 1, and start the two first electric push rods 2 at the same time, driving the two clamping plates 3 to move towards each other, clamp the valve body, and place the valve cover on the valve body;

[0062] B. Start the second electric push rod 4 to extend, and before the correction block 47 contacts the valve cover, start the third electric push rod 6 to extend, so that the reinforcement plate 10 is expanded outward, and the positioning plate 11 is moved out of the annular groove 15, and then the third electric push rod 6 is stopped;

[0063] C. Then the correction block 47 contacts the valve cover until the bottom surface is flush with the valve cover surface. The second support rod 14, the third motor 48, the first motor 17, the fourth support rod 18 and the protective shell 22 will follow the correction block 47 to adjust the valve cover tilt angle, and the second electric push rod 4 will stop.

[0064] D. Then, the first motor 17 is started to drive the threaded rod 21 to rotate, so that the moving ring 23 moves toward the valve cover and drives the valve cover fixing assembly to move until the valve cover fixing assembly fixes the valve cover;

[0065] E. Then, the second electric push rod 4 is started to retract, so that the valve cover leaves the valve body. At this time, the third electric push rod 6 is started to retract, driving the L-shaped rod 7 to press against the bottom surface of the rolling ball 12, and the positioning plate 11 is automatically embedded in the annular groove 15 under gravity;

[0066] F. Finally, the second electric push rod 4 is started to extend, the valve cover is moved to the valve body, and the third motor 48 is started to rotate the valve cover fixing assembly and the valve cover, and the valve cover is installed on the valve body.

[0067] 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 automatic capping machine with self-adaptive valve cover size, characterized in that: include: A support frame (1), wherein a first support rod (5) movable up and down is installed at the center of the top and bottom surfaces of the support frame (1); A ball assembly, the ball assembly being brakeably mounted at the center of the bottom of the first support rod (5), and a second support rod (14) being mounted at the center of the lower end of the ball assembly; A U-shaped rod assembly, wherein the number of the U-shaped rod assemblies is plural and the assemblies are symmetrically arranged on the surface of the first support rod (5) and can be expanded laterally; the surface of the second support rod (14) is provided with an annular groove (15) for one end of the U-shaped rod assembly to be embedded; the lower end of the second support rod (14) is provided with a horizontally rotatable protective shell (22); the surface of the protective shell (22) is provided with a plurality of threaded rods (21) arranged in an annular array; the surface of each of the threaded rods (21) is provided with a movable ring (23) movable along the surface of the threaded rod (21); a valve cover fixing assembly, the valve cover fixing assembly being mounted on the surface of the moving ring (23), a correction block (47) being fixedly mounted at the center of the bottom surface of the protective shell (22), and a top surface of the valve cover fixing assembly and a bottom surface of the correction block (47) being located on the same horizontal plane; A valve body clamping assembly, the valve body clamping assembly being symmetrically mounted on the top surface of the bottom of the support frame (1); The ball assembly comprises a rolling ball (12) and a connecting block (13); the rolling ball (12) is movably connected to the bottom surface of the first support rod (5); the top surface of the connecting block (13) is fixedly connected to the rolling ball (12); the bottom surface is fixedly connected to the second support rod (14); the connecting block (13) is an inverted truncated cone-shaped block; a third electric push rod (6) placed vertically is fixedly installed inside the first support rod (5); an L-shaped rod (7) is fixedly installed at the telescopic end of the third electric push rod (6); one end of the L-shaped rod (7) can contact the bottom surface of the rolling ball (12); The U-shaped rod assembly comprises a toggle block (9), a reinforcing plate (10) and a positioning plate (11); one end of the reinforcing plate (10) is fixedly connected to the toggle block (9), and the other end is fixedly connected to the positioning plate (11); one end of the toggle block (9) is located below the third electric push rod (6); a rotating groove (8) for the toggle block (9) to rotate is provided on the surface of the first support rod (5); the reinforcing plate (10) and the first support rod (5) are rotatably connected, and an axis for rotation between the reinforcing plate (10) and the first support rod (5) is located near one end of the toggle block (9); and the annular embedding groove (15) is for the positioning plate (11) to be embedded; The valve body clamping assembly comprises a first electric push rod (2) and a clamping plate (3), wherein the first electric push rod (2) is fixedly mounted on the surface of the support frame (1), and the telescopic end of the first electric push rod (2) is fixedly connected to the clamping plate (3), a second electric push rod (4) is mounted at the center position of the top bottom surface of the support frame (1), and the telescopic end of the second electric push rod (4) is fixedly connected to the top surface of the first support rod (5), a third motor (48) is fixedly mounted at the center position of the bottom surface of the second support rod (14), and a third support rod (16) is fixedly mounted at the output end of the third motor (48), a fourth support rod (18) is fixedly mounted at the center position of the bottom surface of the third support rod (16), a protective shell (22) is fixedly mounted on the surface of the fourth support rod (18), and a correction block (47) is fixedly mounted at the center position of the bottom end of the fourth support rod (18); A first motor (17) is fixedly mounted between the third support rod (16) and the fourth support rod (18); a first bevel gear (19) is rotatably connected to the surface of the fourth support rod (18); an output end of the first motor (17) is fixedly connected to the first bevel gear (19); a second bevel gear (20) is fixedly mounted on one end of each of the threaded rods (21); each of the second bevel gears (20) is rotatably connected to the protective shell (22); and each of the second bevel gears (20) is meshingly connected to the first bevel gear (19).

2. The automatic capping machine with adaptive valve cover size according to claim 1, characterized in that: The valve cover fixing assembly comprises a plurality of fixing blocks (31) rotatably connected to each other, one end of each fixing block (31) being fixedly connected to a first rotating block (30) and the other end being fixedly connected to a second rotating block (33), the second rotating block (33) on each fixing block (31) being rotatably connected to the first rotating block (30) on another fixing block (31), a rotating shaft (34) being fixedly connected to the surface of the second rotating block (33), and the rotating shaft (34) movably passes through the surface of the first rotating block (30), a return torsion spring (36) being fixedly connected to the surface of the first rotating block (30), and one end of the return torsion spring (36) being fixedly connected to the second rotating block (33).

3. The automatic capping machine with adaptive valve cover size according to claim 2, characterized in that: The top of the first rotating block (30) is fixedly connected to a telescopic sleeve (29), the top of the telescopic sleeve (29) is connected to a telescopic rod (27) that can move up and down, the surface of the telescopic rod (27) is fixedly connected to a push rod (28), the surface of the first rotating block (30) is movably connected to a pressing block (37) that can contact the push rod (28), and one end of the pressing block (37) is an inclined surface, the surface of the rotating shaft (34) is fixedly connected to a friction ring (35), the pressing block (37) can contact the friction ring (35), the surface of the first rotating block (30) is fixedly connected to a sliding block (38), the surface of the pressing block (37) is cooperatively provided with a sliding groove (40) for the sliding block (38) to slide, and a return spring (39) is fixedly connected between the inner wall of the sliding groove (40) and the sliding block (38).

4. The automatic capping machine with adaptive valve cover size according to claim 3, characterized in that: The upper end of each telescopic rod (27) is fixedly connected to a downward pressing rod (26), and a connecting plate (25) is rotatably connected between every two downward pressing rods (26). The bottom end of each movable ring (23) is fixedly connected to a fourth electric push rod (24) placed vertically, and the output end of the fourth electric push rod (24) is fixedly connected to the downward pressing rod (26) located in the middle. The surface of each fixed block (31) is fixedly connected to a friction pad (32).

5. The automatic capping machine with adaptive valve cover size according to claim 1, characterized in that: The valve cover fixing assembly comprises a plurality of friction blocks (42), the bottom end of each of the movable rings (23) is fixedly connected to a connecting rod (41), the bottom end of each of the connecting rods (41) is fixedly connected to one of the friction blocks (42), the surface of one of the connecting rods (41) is fixedly connected to a positioning frame (45), one end of the positioning frame (45) is fixedly connected to an unwinding frame (44), the surface of the unwinding frame (44) is fixedly connected to a second motor (46), and the output end of the second motor (46) is fixedly connected to a reel on the unwinding frame (44), a tensioning rope (43) is strung between each of the friction blocks (42), and the end of the tensioning rope (43) is fixed to the reel of the unwinding frame (44).

6. A method for using the automatic capping machine with adaptive valve cover size according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: A. Place the valve body on the surface of the support frame (1), and simultaneously start the two first electric push rods (2) to drive the two clamping plates (3) to move towards each other, clamp the valve body, and place the valve cover on the valve body; B. Start the second electric push rod (4) to extend, and before the correction block (47) contacts the valve cover, start the third electric push rod (6) to extend, so that the reinforcement plate (10) is expanded outward and the positioning plate (11) is moved out of the annular groove (15), and then stop the third electric push rod (6); C. Then the correction block (47) contacts the valve cover until the bottom surface is flush with the surface of the valve cover, and the second support rod (14), the third motor (48), the first motor (17), the fourth support rod (18), and the protective shell (22) tilt according to the tilt angle of the valve cover adaptively set by the correction block (47), and the second electric push rod (4) stops; D. Then, the first motor (17) is started to drive the threaded rod (21) to rotate, so that the moving ring (23) moves toward the valve cover and drives the valve cover fixing assembly to move until the valve cover fixing assembly fixes the valve cover; E. Then, the second electric push rod (4) is started to retract, so that the valve cover leaves the valve body. At this time, the third electric push rod (6) is started to retract, driving the L-shaped rod (7) to abut against the bottom surface of the rolling ball (12), and the positioning plate (11) is automatically embedded in the annular groove (15) under gravity; F. Finally, the second electric push rod (4) is started to extend, the valve cover is moved onto the valve body, and the third motor (48) is started to rotate the valve cover fixing assembly and the valve cover, thereby completing the installation of the valve cover onto the valve body.

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