High-stability four-roller linkage clamping device

Abstract

The invention belongs to the technical field of mechanical clamping, and particularly relates to a high-stability four-roller linkage clamping device which can be applied to clamping machining of an industrial robot on a cylindrical workpiece and particularly comprises a clamping roller mechanism, and synchronous lifting mechanisms, synchronous clamping mechanisms and synchronous driving mechanisms are installed on the two sides of the clamping roller mechanism correspondingly. The two synchronous lifting mechanisms are connected through a connecting shaft, the lower ends of the synchronous lifting mechanisms and the upper ends of the synchronous clamping mechanisms are fixedly installed, a cylindrical workpiece is clamped between two movable rollers and two fixed rollers, and the two movable rollers and the two fixed rollers are rotationally connected in the roller clamping mechanisms. The two fixed rollers and the two movable rollers rotate synchronously at the same speed, so that stable four-roller linkage can be realized even if the two movable rollers are in a moving state.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical clamping, and particularly relates to a high-stability four-roller linkage clamping device. BACKGROUND

[0002] Most of the current multi-roller (three or more) linkage clamping methods are static linkage clamping, that is, the positions of the lower support roller group and the upper clamping roller group are fixed when they are synchronously linked. If the diameter of the clamped object changes during the clamping process, it cannot adapt to the change. In addition, the current multi-roller clamping linkage method is that only the fixed roller is the driving roller, and the remaining movable rollers are passive rollers, which rely on the friction force of the clamped object to rotate, and cannot realize multi-roller synchronous active linkage, especially not suitable for clamped objects with relatively fragile surfaces.

[0003] For example, patent application No. CN202111172801.2 five-axis linkage multifunctional winding and winding integrated machine, the five-axis linkage multifunctional winding and winding integrated machine includes a mold clamping device, a wide band winding device, and a narrow band winding device, the mold clamping mechanism includes a bed body arranged along the Y-axis direction, a mold clamping mechanism arranged on the bed body, and a lifting roller arranged on the bed body below the mold clamping mechanism. The lifting roller can adjust the height; the wide band winding device includes a frame body arranged along the Y-axis direction, a pay-off roller arranged on the frame body, a guide roller arranged on the frame body, and a pressure roller arranged on the frame body. The pressure roller can adjust the position in the X-axis direction and the Z-axis direction; the narrow band winding device includes a first guide mechanism, a second guide mechanism, a first rotating mechanism, a second rotating mechanism, and a narrow band pay-off mechanism. However, the technical solution has the following disadvantages: only the pay-off roller is the driving roller, and the lifting roller and the pressure roller are passive rollers, which cannot realize multi-roller synchronous active linkage, especially not suitable for clamped objects with relatively fragile surfaces. SUMMARY

[0004] The purpose of the present application is to provide a high-stability four-roller linkage clamping device to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A high-stability four-roller linkage clamping device, comprising a clamping roller mechanism, both sides of the clamping roller mechanism are provided with synchronous lifting mechanisms, synchronous clamping mechanisms, and synchronous driving mechanisms, the two synchronous lifting mechanisms are connected through a connecting shaft, the lower end of the synchronous lifting mechanism is fixedly installed with the upper end of the synchronous clamping mechanism, and a cylindrical workpiece is clamped between the two movable rollers and the two fixed rollers connected in rotation in the clamping roller mechanism.

[0006] Further, the clamp roller mechanism comprises double vertical plates, the synchronous lifting mechanism, the synchronous clamping mechanism and the synchronous driving mechanism are all installed on the side of the double vertical plates, one fixed plate module and two guide modules are installed on both sides of the double vertical plates, on one side of the double vertical plates, the fixed plate module is installed at the middle position of the lower end of the double vertical plates, the two guide modules are installed in inverted V shape on the upper end of the double vertical plates, the two guide modules are all rotatably connected with the lower end of the synchronous clamping mechanism, the fixed plate module is rotatably connected with the two fixed rollers, the two guide modules are respectively rotatably connected with the two movable rollers, and the fixed plate module and the guide module are drivingly and cooperatively connected with the synchronous driving mechanism.

[0007] Further, the fixed plate module comprises a hanging plate, the hanging plate is fixed at the middle position of the lower end of the double vertical plates, the hanging plate is rotatably connected with the two fixed rollers through two fixed roller bearings, chain wheels one and two are arranged at the end portions of the two fixed rollers, the two chain wheels two are drivingly connected through a chain one, and the chain wheel one is drivingly and cooperatively connected with the synchronous driving mechanism.

[0008] Further, the guide module comprises a guide rail one, the guide rail one is fixed on the side of the double vertical plates, a guide rail sliding block is slidably connected to the guide rail one, the guide rail sliding block is fixedly connected with a connecting plate, a mandrel is fixedly connected to the connecting plate, and the mandrel is rotatably connected with the lower end of the synchronous clamping mechanism.

[0009] Further, the connecting plate is rotatably connected with the movable roller through a movable roller bearing, the connecting plate is fixedly connected with the fixed plate through a supporting screw, two guide wheels are rotatably connected between the connecting plate and the fixed plate, guide wheel bearings are arranged at the rotatable connection positions of the two guide wheels and the connecting plate, a chain wheel three is arranged at the end portion of the movable roller, the chain wheel three is drivingly and cooperatively connected with the synchronous driving mechanism, and the two guide wheels are rotatably connected with the synchronous driving mechanism.

[0010] Further, the synchronous lifting mechanism comprises an air cylinder, the air cylinder is fixed on the double vertical plates through a back plate, an output end of the air cylinder is connected with a feeding circular rack, the feeding circular rack is connected with a reversing gear, the reversing gear is fixed on the double vertical plates, the reversing gear is connected with a lifting circular rack, a lower end of the lifting circular rack is fixedly installed with the upper end of the synchronous clamping mechanism, and the reversing gear is connected with an end portion of a connecting shaft through a connecting shaft device.

[0011] Further, the reversing gear comprises a shell, the shell is fixed on the double vertical plates, a gear shaft is rotatably connected in the shell, the feeding circular rack horizontally penetrates through the shell and is drivingly connected with the gear shaft, the lifting circular rack vertically penetrates through the shell and is drivingly connected with the gear shaft, and the gear shaft is connected with the end portion of the connecting shaft through the connecting shaft device.

[0012] Further, the synchronous clamping mechanism comprises a pressing plate, the lower end of the lifting circular rack is fixed on a lifting plate through the pressing plate, the double vertical plates are fixedly connected with two guide rails two, the lifting plate is slidably connected with the two guide rails two, the lifting plate is rotatably connected with two connecting rods one ends, and the other ends of the two connecting rods are respectively rotatably connected with the two mandrels.

[0013] Further, the synchronous driving mechanism comprises a base provided with four long holes, four screws fixed on the double vertical plates and sliding in the four long holes respectively, and a rotating shaft bearing connecting the base and the rotating shaft, wherein the rotating shaft is provided with a chain wheel four, the chain wheel four is in transmission matching connection with one end of a chain two, the other end of the chain two is in transmission matching connection with a chain wheel one, a chain wheel three is located outside the chain two and in transmission matching connection with the chain two, and two guide wheels are located inside the chain two and in sliding connection with the chain two.

[0014] Further, the double vertical plates are fixed with a tensioning mechanism, and the front end of the tensioning mechanism is supported on the side of the base.

[0015] The present application has the following advantages:

[0016] 1. The device can adapt to the diameter change of the cylindrical workpiece, and the rotating speed of the two fixed rollers and the two movable rollers will not be affected when the two movable rollers move to adapt to the diameter change of the cylindrical workpiece, thereby ensuring the stability of the cylindrical workpiece during rotation.

[0017] 2. The device realizes synchronous equidistance movement of the two movable rollers, equal force clamping of the cylindrical workpiece, and synchronous and same speed rotation of the two fixed rollers and the two movable rollers, and stable four-roller linkage can be realized even in the moving state of the two movable rollers.

[0018] 3. The synchronous lifting mechanisms on both sides of the roller clamping mechanism move synchronously through the connecting shafts, thereby ensuring the stability and synchronism of four-roller linkage, clamping and releasing. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the roller clamping mechanism structure of the present application;

[0021] Figure 3 It is a schematic diagram of the fixed plate module structure of the present application;

[0022] Figure 4 It is a schematic diagram of the guide module structure of the present application;

[0023] Figure 5 It is a schematic diagram of the synchronous lifting mechanism structure of the present application;

[0024] Figure 6 It is a schematic diagram of the synchronous clamping mechanism structure of the present application;

[0025] Figure 7 It is a schematic diagram of the synchronous driving mechanism structure of the present application Figure 1 ;

[0026] Figure 8 It is a schematic diagram of the synchronous driving mechanism structure of the present applicationFigure 2 ;

[0027] Explanation of the figure:

[0028] Clamping roller mechanism 1; double vertical plate 101; movable roller 102; fixed roller 103; hanging plate 104; fixed roller bearing 105; chain wheel one 106; chain wheel two 107; guide rail one 108; guide rail slider 109; connecting plate 110; mandrel 111; fixed plate 112; guide wheel 113; guide wheel bearing 114; movable roller bearing 115; chain wheel three 116; synchronous lifting mechanism 2; air cylinder 201; back plate 202; feed circular rack 203; reverser 204; lifting circular rack 205; connecting shaft 206; connecting shaft 207; synchronous clamping mechanism 3; pressing plate 301; guide rail two 302; lifting plate 303; connecting rod 304; synchronous driving mechanism 4; base 401; long hole 402; rotating shaft bearing 403; rotating shaft 404; chain wheel four 405; chain two 406; cylindrical workpiece 5; tensioning mechanism 6. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Embodiment one

[0032] As shown in Figures 1-8 A high-stability four-roll linkage clamping device, comprising a clamping roller mechanism 1, a synchronous lifting mechanism 2, a synchronous clamping mechanism 3 and a synchronous driving mechanism 4 are installed on both sides of the clamping roller mechanism 1, the two synchronous lifting mechanisms 2 are connected through the connecting shaft 207, the lower end of the synchronous lifting mechanism 2 is fixedly installed with the upper end of the synchronous clamping mechanism 3, and the cylindrical workpiece 5 is clamped between the two movable rollers 102 and the two fixed rollers 103 rotatably connected in the clamping roller mechanism 1;

[0033] The working principle of the above technical solution is that the synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move upwards, drives the two movable rollers 102 to move obliquely upwards in an inverted V shape, the distance between the two movable rollers 102 increases, the cylindrical workpiece 5 is placed between the two movable rollers 102, and then placed between the two fixed rollers 103, the synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move downwards, drives the two movable rollers 102 to move downwards and contact the cylindrical workpiece 5, and the two movable rollers 102 and the two fixed rollers 103 form clamping of the cylindrical workpiece 5.

[0034] The motor (not shown) is connected with one of the fixed rollers 103, the motor drives the fixed roller 103 to rotate, the fixed roller 103 drives the other fixed roller 103 to rotate through the chain, the two fixed rollers 103 drive the two movable rollers 102 to rotate through the synchronous driving mechanism 4, and then the four rollers rotate at the same speed, driving the cylindrical workpiece 5 to rotate stably.

[0035] As the diameter of the cylindrical workpiece 5 increases, the synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move upwards at a constant speed, the two movable rollers 102 move obliquely upwards in an inverted V shape at a constant speed, the two movable rollers 102 are always in close contact with the cylindrical workpiece 5, and the rotating speeds of the two fixed rollers 103 and the two movable rollers 102 remain unchanged during the movement of the two movable rollers 102, until the diameter of the cylindrical workpiece 5 reaches the preset value, the motor (not shown) stops working, the two fixed rollers 103 and the two movable rollers 102 stop rotating, and the cylindrical workpiece 5 stops rotating. The synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move upwards, drives the two movable rollers 102 to move obliquely upwards in an inverted V shape, and the distance between the two movable rollers 102 increases, so that the cylindrical workpiece 5 is taken out from the two movable rollers 102.

[0036] The device can adapt to the change of the diameter of the cylindrical workpiece 5, and the rotating speeds of the two fixed rollers 103 and the two movable rollers 102 will not be affected when the two movable rollers 102 move to adapt to the change of the diameter of the cylindrical workpiece 5, which ensures the stability of the cylindrical workpiece 5 during rotation.

[0037] The device realizes synchronous and equidistant movement of the two movable rollers 102, equal force clamping of the cylindrical workpiece 5, synchronous and constant speed rotation of the two fixed rollers 103 and the two movable rollers 102, and stable four-roller linkage rotation even in the moving state of the two movable rollers 102.

[0038] The synchronous lifting mechanisms 2 on both sides of the roller clamping mechanism 1 move synchronously through the connecting shaft 207, ensuring the stability and synchronization of four-roller linkage, clamping and releasing.

[0039] Embodiment two

[0040] As Figures 1-8As shown, the clamp roller mechanism 1 includes a double stand 101, a synchronous lifting mechanism 2, a synchronous clamping mechanism 3 and a synchronous driving mechanism 4 are installed on the side of the double stand 101, and a fixed plate module and two guide modules are installed on both sides of the double stand 101. On one side of the double stand 101, the fixed plate module is installed at the middle position of the lower end of the double stand 101, and the two guide modules are installed in an inverted V shape on the double stand 101, both of which are rotatably connected with the lower end of the synchronous clamping mechanism 3. The fixed plate module is rotatably connected with the two fixed rollers 103, and the two guide modules are respectively rotatably connected with the two movable rollers 102. The fixed plate module and the guide module are drivingly connected with the synchronous driving mechanism 4.

[0041] The working principle of the above technical scheme is as follows: the synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move upward, drives the two guide modules to move upward in an inverted V shape, and drives the two movable rollers 102 to move respectively with the two guide modules. The distance between the two movable rollers 102 increases, the cylindrical workpiece 5 is placed between the two movable rollers 102, and the cylindrical workpiece 5 is placed between the two fixed rollers 103. The synchronous lifting mechanism 2 drives the synchronous clamping mechanism 3 to move downward, drives the two guide modules to move downward, and drives the two movable rollers 102 to move downward. Both of the two movable rollers 102 contact the cylindrical workpiece 5, and the two movable rollers 102 and the two fixed rollers 103 form a clamping of the cylindrical workpiece 5.

[0042] Through the synchronous upward and downward movement of the two guide modules, the two movable rollers 102 are driven to move synchronously and equidistantly, and the cylindrical workpiece 5 is clamped with equal force, which ensures stable clamping of the cylindrical workpiece 5.

[0043] Embodiment three

[0044] As shown in the figure, Figures 1-8 The fixed plate module includes a hanging plate 104, which is fixed at the middle position of the lower end of the double stand 101. The hanging plate 104 is rotatably connected with the two fixed rollers 103 through two fixed roller bearings 105. The end of each fixed roller 103 is provided with a chain wheel one 106 and a chain wheel two 107. The two chain wheel twos 107 are drivingly connected by a chain one. The chain wheel one 106 is drivingly connected with the synchronous driving mechanism 4.

[0045] The guide module includes a guide rail one 108, which is fixed on the side of the double stand 101. The guide rail one 108 is slidingly connected with a guide rail sliding block 109. The guide rail sliding block 109 is fixedly connected with a connecting plate 110. The connecting plate 110 is fixedly connected with a mandrel 111. The mandrel 111 is rotatably connected with the lower end of the synchronous clamping mechanism 3.

[0046] The connecting plate 110 is rotatably connected to the movable roller 102 via a movable roller bearing 115. The connecting plate 110 is fixedly connected to the fixed plate 112 via a supporting screw. Two guide wheels 113 are rotatably connected between the connecting plate 110 and the fixed plate 112. Guide wheel bearings 114 are provided at the rotatable connection between the two guide wheels 113 and the connecting plate 110. A sprocket three 116 is installed at the end of the movable roller 102. The sprocket three 116 is in transmission cooperation with the synchronous drive mechanism 4. The two guide wheels 113 are rotatably connected to the synchronous drive mechanism 4.

[0047] The working principle of the above technical solution is as follows: the synchronous clamping mechanism 3 is driven to move upward by the synchronous lifting mechanism 2, and the synchronous clamping mechanism 3 pulls the two core shafts 111 to move upward, drives the two connecting plates 110 to move upward, drives the two guide rail sliders 109 to slide upward in an inverted eight shape on the two guide rails 108 respectively, and the two connecting plates 110 move upward and respectively drive the two movable rollers 102 to move upward in an inverted eight shape, and the distance between the two movable rollers 102 becomes larger, and the cylindrical workpiece 5 is placed between the two movable rollers 102 and between the two fixed rollers 103, and the synchronous clamping mechanism 3 is driven downward by the synchronous lifting mechanism 2, drives the connecting plate 110 to move downward, drives the two movable rollers 102 to move downward, and the two movable rollers 102 both contact the cylindrical workpiece 5, and the two movable rollers 102 and the two fixed rollers 103 form a clamp for the cylindrical workpiece 5;

[0048] It is connected to a fixed roller 103 through a motor (not shown), and the motor drives the fixed roller 103 to rotate. The sprocket 2 107 on the fixed roller 103 drives the sprocket 2 107 on the other fixed roller 103 to rotate through the chain 1, thereby driving the other fixed roller 103 to rotate. The two fixed rollers 103 rotate in the same direction and at the same speed. The two fixed rollers 103 drive the two sprockets 3 116 to rotate through the synchronous drive mechanism 4, and drive the two movable rollers 102 to rotate, thereby achieving a state of four rollers rotating in the same direction and at the same speed, driving the cylindrical workpiece 5 to rotate stably.

[0049] Example 4

[0050] like Figures 1-8 As shown, the synchronous lifting mechanism 2 includes a cylinder 201, which is fixed to the double vertical plates 101 through a back plate 202. The output end of the cylinder 201 is connected to the feed rack 203, the feed rack 203 is connected to the commutator 204, the commutator 204 is fixed to the double vertical plates 101, the commutator 204 is connected to the lifting rack 205, the lower end of the lifting rack 205 is fixedly mounted to the upper end of the synchronous clamping mechanism 3, and the commutator 204 is connected to the end of the connecting shaft 207 through a coupling 206;

[0051] The commutator 204 includes a housing fixed on the double vertical plate 101. A gear shaft is rotatably connected inside the housing. The feed rack 203 passes through the housing horizontally and meshes with the gear shaft for transmission. The lifting rack 205 passes through the housing vertically and meshes with the gear shaft for transmission. The gear shaft is connected to the end of the connecting shaft 207 through a coupling 206.

[0052] The working principle of the above technical solution is as follows: on one side of the double vertical plate 101, the cylinder 201 is activated to drive the feed rack 203 to extend, the feed rack 203 passes through the housing of the commutator 204, and meshes with the gear shaft to drive the gear shaft to rotate, drive the lifting rack 205 to move upward, and drive the synchronous clamping mechanism 3 to move upward;

[0053] The rotation of the gear shaft drives the connecting shaft 207 to rotate through the coupling 206, and then drives the gear shaft on the other side of the double vertical plate 101 to rotate, drives the lifting circular rack 205 on the other side of the double vertical plate 101 to move upward, and then drives the synchronous clamping mechanism 3 on both sides of the double vertical plate 101 to move upward synchronously, drives the guide modules on both sides of the double vertical plate 101 to move upward synchronously, and drives the two movable rollers 102 to rise steadily.

[0054] Example 5

[0055] like Figures 1-8 As shown, the synchronous clamping mechanism 3 includes a pressing plate 301, the lower end of the lifting rack 205 is fixed to the lifting plate 303 through the pressing plate 301, the double vertical plate 101 is fixedly connected to the two guide rails 302, the lifting plate 303 is slidably connected to the two guide rails 302, the lifting plate 303 is rotatably connected to one end of two connecting rods 304, and the other ends of the two connecting rods 304 are rotatably connected to the two core shafts 111 respectively;

[0056] The working principle of the above technical solution is: the lifting rack 205 rises or falls, driving the lifting plate 303 to rise or fall, driving the lifting plate 303 and the guide rail 2 302 to slide, and the lifting plate 303 drives the two core shafts 111 to rise or fall through the two connecting rods 304, thereby driving the guide module to rise or fall, driving the two movable rollers 102 to rise or fall, realizing the synchronous and equidistant movement of the two movable rollers 102, clamping the cylindrical workpiece 5 with equal force, and the four rollers rotate synchronously. Even when the movable roller 102 is in a moving state, the stable four-roller linkage rotation can be achieved.

[0057] Example 6

[0058] like Figures 1-8As shown, the synchronous driving mechanism 4 comprises a base 401, four long holes 402 are formed in the base 401, four screws are fixed on the double vertical plate 101, the four screws are slid in the four long holes 402 respectively, the base 401 is rotatably connected with a rotating shaft 404 through a rotating shaft bearing 403, a chain wheel four 405 is arranged on the rotating shaft 404, the chain wheel four 405 is drivingly and matchingly connected with one end of a chain two 406, the other end of the chain two 406 is drivingly and matchingly connected with the chain wheel one 106, a chain wheel three 116 is located outside the chain two 406 and is drivingly and matchingly connected with the chain two 406, two guide wheels 113 are all located inside the chain two 406 and are all slidably connected with the chain two 406;

[0059] The double vertical plate 101 is fixed with a tensioning mechanism 6, and the front end of the tensioning mechanism 6 is supported on the side of the base 401;

[0060] The working principle of the above technical scheme is as follows: the cylinder 201 is started, the feeding circular rack 203 is extended, the feeding circular rack 203 passes through the shell of the reversing gear 204 and is in meshing transmission with the gear shaft, the gear shaft is driven to rotate, the lifting circular rack 205 is driven to move upwards, the lifting plate 303 is driven to move upwards, the two core shafts 111 are driven to move upwards through the two connecting rods 304, the two connecting plates 110 are driven to move upwards, and the two movable rollers 102 are driven to move upwards, the chain wheel three 116 on the movable roller 102 is in meshing transmission with the outside of the chain two 406, the movable roller 102 is driven to rotate and move upwards under the action of the chain two 406, and the guide wheel 113 ensures that the chain wheel three 116 is completely meshed with the chain two 406 and prevents the chain wheel three 116 from being separated from the chain two 406;

[0061] The cylindrical workpiece 5 is placed between the two movable rollers 102 and between the two fixed rollers 103, the feeding circular rack 203 is driven to retract by the cylinder 201, the gear shaft is driven to rotate in the opposite direction, the lifting circular rack 205 is driven to descend, the lifting plate 303 is driven to descend, the two core shafts 111 are driven to descend through the two connecting rods 304, the two connecting plates 110 are driven to descend, the two movable rollers 102 are driven to descend, the chain wheel three 116 on the movable roller 102 is in meshing transmission with the outside of the chain two 406, and the movable roller 102 is driven to descend while rotating, the two movable rollers 102 contact the cylindrical workpiece 5 after descending, and the two movable rollers 102 and the two fixed rollers 103 form clamping on the cylindrical workpiece 5;

[0062] The motor (not shown) is connected with one fixed roller 103, the motor drives the fixed roller 103 to rotate, the sprocket 107 on the fixed roller 103 drives the sprocket 107 on the other fixed roller 103 to rotate, and then drives the other fixed roller 103 to rotate, the two fixed rollers 103 rotate at the same speed and in the same direction, the two fixed rollers 103 are respectively engaged with one end of the two chains 406 to drive the two chains 406 to rotate, at the other end of the chain 406, the chain 406 drives the sprocket 405 to rotate, and drives the rotating shaft 404 to rotate on the base 401, in the middle of the chain 406, the chain 406 drives the sprocket 116 to rotate, and drives the two movable rollers 102 to rotate, the two movable rollers 102 and the two fixed rollers 103 rotate at the same speed, in the same direction and synchronously, and drive the cylindrical workpiece 5 to stably rotate;

[0063] If the cylindrical workpiece 5 is wound between the two movable rollers 102 and the two fixed rollers 103, the diameter of the cylindrical workpiece 5 is continuously increased, the movable cylinder 201 drives the rack 203 to slowly extend, drives the gear shaft to rotate, drives the lifting rack 205 to slowly move up, drives the two guide modules to slowly move up, and drives the two movable rollers 102 to tightly adhere to the outside of the cylindrical workpiece 5 and slowly move up, so as to realize the self-adaptation of the diameter change of the cylindrical workpiece 5;

[0064] The tensioning mechanism 6 includes a tensioning mechanism housing and a screw, the screw is threadedly connected with the tensioning mechanism housing, the front end of the screw abuts against the side surface of the base 401, the screw is rotated, the front end of the screw moves forward, the front end of the screw extrudes the base 401 to move forward, the four screws are respectively slid in the four long holes 402, drives the rotating shaft 404 and the sprocket 405 to slightly move forward, increases the distance between the sprocket 405 and the sprocket 106, and then the chain 406 can be tensioned;

[0065] The device realizes the self-adaptation of the diameter change of the cylindrical workpiece 5 in the clamping process, and maintains a certain rotating speed, without the need of an additional tensioning chain mechanism;

[0066] The two movable rollers 102 are synchronously and equidistantly moved, clamped with equal force, and the four rollers are synchronously rotated, even in the moving state of the movable roller 102, stable four-roller linkage can be realized;

[0067] The synchronous lifting mechanism 2 on both sides of the double vertical plates 101 moves synchronously through the connecting shaft 207, to ensure the stability and synchronism of the four-roller linkage, clamping and releasing.

[0068] It is to be understood that the present application is described by way of example only, and that modifications or alterations can be made to the features and embodiments described without departing from the spirit and scope of the application. In addition, modifications can be made to the features and embodiments described to accommodate specific situations and materials without departing from the spirit and scope of the application. Accordingly, the application is not limited to the specific embodiments disclosed herein, but rather, the scope of the application includes all embodiments falling within the scope of the claims.

Claims

1. A high-stability four-roller linkage clamping device, characterized in that: The invention comprises a clamping roller mechanism (1), wherein a synchronous lifting mechanism (2), a synchronous clamping mechanism (3) and a synchronous driving mechanism (4) are installed on both sides of the clamping roller mechanism (1), the two synchronous lifting mechanisms (2) are connected via a connecting shaft (207), the lower end of the synchronous lifting mechanism (2) and the upper end of the synchronous clamping mechanism (3) are fixedly installed, and a cylindrical workpiece (5) is clamped between two movable rollers (102) and two fixed rollers (103) that are rotatably connected in the clamping roller mechanism (1).

2. A high-stability four-roller linkage clamping device according to claim 1, characterized in that: The clamping roller mechanism (1) comprises a double vertical plate (101), a synchronous lifting mechanism (2), a synchronous clamping mechanism (3) and a synchronous driving mechanism (4) all being mounted on the side of the double vertical plate (101), a fixed plate module and two guide modules being mounted on both sides of the double vertical plate (101), the fixed plate module being mounted on the middle position of the lower end of the double vertical plate (101) on one side of the double vertical plate (101), the two guide modules being mounted on the double vertical plate (101) in an inverted figure eight shape, the two guide modules being rotatably connected to the lower end of the synchronous clamping mechanism (3), the fixed plate module being rotatably connected to the two fixed rollers (103), the two guide modules being rotatably connected to the two movable rollers (102), and the fixed plate module and the guide module being transmission-coordinated connected to the synchronous driving mechanism (4).

3. A high-stability four-roller linkage clamping device according to claim 2, characterized in that: The fixed plate module comprises a hanging plate (104), which is fixed at the middle position of the lower end of the double vertical plates (101). The hanging plate (104) is rotatably connected to the two fixed rollers (103) through two fixed roller bearings (105). The ends of the two fixed rollers (103) are both equipped with a sprocket 1 (106) and a sprocket 2 (107). The two sprockets 2 (107) are connected to each other through a chain 1 transmission. The sprocket 1 (106) is connected to the synchronous drive mechanism (4) in a transmission cooperation manner.

4. A high-stability four-roller linkage clamping device according to claim 3, characterized in that: The guide module comprises a guide rail (108), which is fixed on the side of the double vertical plate (101), a guide rail slider (109) is slidably connected to the guide rail (108), the guide rail slider (109) is fixedly connected to the connecting plate (110), a core shaft (111) is fixed on the connecting plate (110), and the core shaft (111) is rotatably connected to the lower end of the synchronous clamping mechanism (3).

5. The high-stability four-roller linkage clamping device according to claim 4, characterized in that: The connecting plate (110) is rotatably connected to the movable roller (102) via a movable roller bearing (115); the connecting plate (110) is fixedly connected to the fixed plate (112) via a supporting screw; two guide wheels (113) are rotatably connected between the connecting plate (110) and the fixed plate (112); guide wheel bearings (114) are provided at the rotatable connection points between the two guide wheels (113) and the connecting plate (110); a sprocket three (116) is installed at the end of the movable roller (102); the sprocket three (116) is connected to the synchronous drive mechanism (4) in a transmission-coordinated manner; and the two guide wheels (113) are rotatably connected to the synchronous drive mechanism (4).

6. The high-stability four-roller linkage clamping device according to claim 5, characterized in that: The synchronous lifting mechanism (2) includes a cylinder (201), the cylinder (201) is fixed on the double vertical plates (101) through a back plate (202), the output end of the cylinder (201) is connected to the feed round rack (203), the feed round rack (203) is connected to the commutator (204), the commutator (204) is fixed on the double vertical plates (101), the commutator (204) is connected to the lifting round rack (205), the lower end of the lifting round rack (205) is fixedly installed with the upper end of the synchronous clamping mechanism (3), and the commutator (204) is connected to the end of the connecting shaft (207) through a coupling (206).

7. The high-stability four-roller linkage clamping device according to claim 6, characterized in that: The commutator (204) includes a housing fixed on the double vertical plates (101), a gear shaft rotatably connected inside the housing, a feed rack (203) passing through the housing horizontally and meshing with the gear shaft for transmission, a lifting rack (205) passing through the housing vertically and meshing with the gear shaft for transmission, and the gear shaft is connected to the end of the connecting shaft (207) through a coupling (206).

8. The high-stability four-roller linkage clamping device according to claim 7, characterized in that: The synchronous clamping mechanism (3) includes a pressing plate (301), the lower end of the lifting rack (205) is fixed to the lifting plate (303) through the pressing plate (301), the double vertical plate (101) is fixedly connected to the two guide rails (302), the lifting plate (303) is slidably connected to the two guide rails (302), the lifting plate (303) is rotatably connected to one end of the two connecting rods (304), and the other ends of the two connecting rods (304) are rotatably connected to the two core shafts (111) respectively.

9. The high-stability four-roller linkage clamping device according to claim 8, characterized in that: The synchronous drive mechanism (4) includes a base (401), four long holes (402) are opened on the base (401), four screws are fixed on the double vertical plates (101), and the four screws slide in the four long holes (402) respectively. The base (401) is rotatably connected to the rotating shaft (404) through a rotating shaft bearing (403), and a sprocket four (405) is installed on the rotating shaft (404). The sprocket four (405) is connected to one end of the chain two (406) in a transmission-coordinated manner, and the other end of the chain two (406) is connected to the sprocket one (106) in a transmission-coordinated manner. The sprocket three (116) is located outside the chain two (406) and is connected to the chain two (406) in a transmission-coordinated manner. The two guide wheels (113) are both located inside the chain two (406) and are both slidably connected to the chain two (406).

10. The high-stability four-roller linkage clamping device according to claim 9, characterized in that: A tensioning mechanism (6) is fixed to the side of the double upright plates (101), and the front end of the tensioning mechanism (6) is supported on the side of the base (401).

Images