Automatic rolloff tire film lifting platform with synchronous belt lifting mechanism

Abstract

The utility model discloses an automatic rolloff tire film lifting platform with a synchronous belt lifting mechanism. The automatic rolloff tire film lifting platform comprises a mounting assembly, the lifting assembly is arranged on the mounting assembly, the lifting assembly is provided with a gripper mounting disc and a balance weight part, the balance weight part can drive the gripper mounting disc to move, and the movement direction of the balance weight part is opposite to that of the gripper mounting disc; and the positioning assembly can limit the moving stroke of the gripper mounting disc. The external guide rail is arranged to limit the horizontal direction of the gripper installation disc, the upper sensor and the lower sensor are arranged to limit the upper limit and the lower limit of the stroke of the gripper installation disc, and therefore the high positioning precision of the position precision of the gripper installation disc relative to a tire film can be kept; and in addition, the counterweight piece can assist the servo motor to quickly ascend the gripper mounting disc, and the purpose that the gripper mounting disc quickly carries the tire mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding, in particular to an automatic lifting platform for rolled tire membranes with a synchronous belt lifting mechanism. Background Art

[0002] The automatic lifting platform of the hemming membrane gripper is a device used in automated production lines, mainly used in industrial fields such as automobile manufacturing, and is widely used in automobile welding production lines. Among them, hemming refers to a processing technology that involves using mechanical pressure to extrude and plasticize the edges of welded sheet metal parts to achieve the purpose of strengthening the strength and stability of the weld area, reducing welding marks, and eliminating the unevenness of the edges of sheet metal parts; secondly, the membrane is also called a mold or a forming mold, which is usually made of steel or other durable materials and is used to form or shape sheet metal parts under high pressure or hot pressing conditions. In the hemming process, the specific role of the membrane includes: providing precise shape and size guidance for sheet metal parts, helping sheet metal to form a smooth and uniform surface effect, ensuring that the same shape of sheet metal parts is obtained each time the hemming is performed, and providing necessary support and precise positioning for sheet metal parts during the rolling process.

[0003] The automatic lifting platform for the hemming membrane gripper includes an automatic membrane replacement device, a membrane gripper and positioning, robot integration, automatic lifting function, and intelligent detection. The industrial robot is responsible for manipulating the gripper to complete the grasping, transportation, installation, and unloading of the membrane. The process of the industrial robot grasping or carrying the membrane is as follows: positioning and mold taking, the robot uses the end effector to position with high precision to accurately grasp the membrane; carrying, the robot that grasps the membrane moves the membrane to the top of the hemming mold along the predetermined path; placing and installing, after reaching the specified position, the robot accurately aligns the membrane with the hemming mold; returning and waiting, the robot returns to the initial position or the next task point to wait for instructions.

[0004] The inventors of the present application discovered when using an existing automatic lifting platform for rolling membrane that an industrial robot includes a base, a hip, a wrist and an end effector (such as a gripper), and these components are connected by joints, and each joint provides one or more degrees of freedom, enabling it to move and rotate in multiple dimensions. Under the control of motion instructions, an electric motor or a hydraulic or pneumatic system drives the joint to rotate or move linearly, so that its end effector can achieve high-precision positioning accuracy during the process of grasping or transporting the membrane, thereby ensuring the normal operation of the rolling. However, the movement of the industrial robot requires the participation of multiple joints in the hip and wrist, and the movement of each joint is fed back to the control system in real time to control the movement of each joint. Therefore, the movement speed of the joint is relatively slow, so that the industrial robot can only tend towards high-precision positioning between high-precision positioning and rapid movement, which in turn makes the membrane transportation speed lower, thereby reducing the working efficiency of the rolling process, and thereby reducing the efficiency of the automobile welding production line. Utility Model Content

[0005] In order to solve the problem of slow conveying speed while ensuring high-precision positioning of the tire membrane in the automobile welding production line, the utility model provides an automatic lifting platform for the rolled tire membrane with a synchronous belt lifting mechanism. The specific technical scheme is as follows:

[0006] The utility model includes an installation component, which is characterized in that the automatic lifting platform for rolled tire membrane also includes: a lifting component arranged on the installation component, the lifting component is provided with a gripper mounting plate and a counterweight, the counterweight can drive the gripper mounting plate to move along the length direction of the installation component, and the movement direction of the counterweight is opposite to that of the gripper mounting plate; and a positioning component arranged on the installation component, the positioning component can limit the moving stroke of the gripper mounting plate along the length direction of the installation component.

[0007] Furthermore, the lifting assembly also includes an external guide rail, the length direction of the external guide rail is the same as the length direction of the mounting assembly, the gripper mounting plate moves along the length direction of the external guide rail, and the contact surface between the gripper mounting plate and the external guide rail is concave.

[0008] Furthermore, the positioning assembly includes: an upper sensor arranged on the mounting assembly, which sends an upper signal indicating that the gripper mounting disk has reached the upper limit of the stroke; a fixing pin arranged on the mounting assembly, the upper signal controls the fixing pin to fix the gripper mounting disk at the upper limit of the stroke; a lower sensor arranged on the mounting assembly, which sends a lower signal indicating that the gripper mounting disk has reached the lower limit of the stroke; and an oil pressure buffer arranged on the mounting assembly, which limits the gripper mounting disk from exceeding the lower limit of the stroke.

[0009] Preferably, the lifting assembly also includes: a synchronous wheel arranged at the top of the mounting assembly, the axial side of the synchronous wheel being perpendicular to the length direction of the mounting assembly; a servo motor driving the synchronous wheel; a synchronous belt in contact with the outer peripheral surface of the synchronous wheel, one end of the synchronous belt being connected to the counterweight, and the other end of the synchronous belt being connected to the gripper mounting plate, the counterweight and the gripper mounting plate being respectively distributed on both sides of the synchronous wheel; and an internal guide rail arranged inside the mounting assembly, the internal guide rail being the moving path of the counterweight, and a synchronous wheel with at least two coincident axes being arranged at the top of the mounting assembly.

[0010] Preferably, the lifting assembly further comprises a broken belt detection member, one end of which is fixedly connected to the end of the synchronous belt, and the other end of which is fixedly connected to the gripper mounting plate.

[0011] Preferably, it also includes a maintenance component, which includes: a ladder connected to the installation component on the side; an anti-fall protection net arranged on the upper part of the ladder, the mesh diameter of the anti-fall protection net is smaller than the normal adult body size; and a maintenance platform arranged at the top of the ladder, the top height of the maintenance platform is not lower than the top height of the installation component.

[0012] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0013] The utility model sets an external guide rail to limit the horizontal freedom of the gripper mounting plate, and sets upper and lower sensors to limit the upper and lower limits of the travel of the gripper mounting plate, which can make the position accuracy of the gripper mounting plate relative to the fetal membrane maintain the same positioning accuracy as that of the industrial robot, and secondly, sets a servo motor to drive the synchronous belt to drive the gripper mounting plate to move up and down, which enables the servo motor to provide accurate position feedback to the gripper mounting plate, so that the gripper mounting plate can move accurately along the external guide rail. In addition, the counterweight arranged at one end of the synchronous belt can assist the servo motor to raise the gripper mounting plate more quickly under the drive of gravity, thereby increasing the speed at which the gripper mounting plate rises to a high position after grabbing the fetal membrane, thereby achieving the purpose of quickly transporting the fetal membrane by the gripper mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a local structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the gripper mounting plate structure;

[0016] Figure 3 It is the front view and side view of the embodiment of the utility model.

[0017] In the figure: 1. Installation assembly; 2. Lifting assembly; 3. Positioning assembly; 4. Maintenance assembly; 11. Installation base; 12. Welding frame; 21. Servo motor; 22. Synchronous belt; 23. Synchronous wheel; 24. Counterweight; 25. External guide rail; 26. Internal guide rail; 27. Fixing pin; 28. Gripper mounting plate; 29. ​​Broken belt detection component; 31. Upper sensor; 32. Lower sensor; 33. Hydraulic buffer; 41. Maintenance platform; 42. Ladder; 43. Anti-fall protection net. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] like Figure 1 As shown, an embodiment of the utility model includes a mounting component 1; a lifting component 2 arranged on the mounting component 1, the lifting component 2 is provided with a gripper mounting plate 28 and a counterweight, the counterweight can drive the gripper mounting plate 28 to move along the length direction of the mounting component 1, and the movement direction of the counterweight is opposite to that of the gripper mounting plate 28; and a positioning component 3 arranged on the mounting component 1, the positioning component 3 can limit the movement stroke of the gripper mounting plate 28 along the length direction of the mounting component 1.

[0021] Specifically, the mounting assembly 1 is a rectangular frame having a height that meets the requirements for transporting the fetal membrane, and the lifting assembly 2 is fixedly connected to the mounting assembly 1 by means of bolts or the like, so that the gripper mounting plate 28 does not shake during the process of transporting the fetal membrane, thereby affecting the positioning accuracy of the transport; secondly, the counterweight and the gripper mounting plate 28 are respectively mounted on the inner and outer sides of the mounting assembly 1, and the two are connected by a synchronous belt 22. Under the action of gravity, the counterweight slides downward along the length direction of the mounting assembly 1, so that the gripper mounting plate 28 can drive the fetal membrane to rise quickly, thereby increasing the speed at which the lifting assembly 2 lifts the fetal membrane, thereby shortening the time spent on one of the links in transporting the fetal membrane of the utility model, thereby increasing the speed at which the fetal membrane is transported of the utility model.

[0022] Secondly, the positioning component 3 is provided with a plurality of structures along the movement path of the gripper mounting plate 28 for limiting its upper and lower limits of travel, ensuring that the starting position and the end position of the gripper mounting plate 28 are respectively the storage position and the transport position of the fetal membrane, thereby improving the positioning accuracy of the gripper mounting plate 28 during rapid movement, thereby realizing that the utility model can achieve both high-precision positioning and rapid transport in the process of transporting the fetal membrane.

[0023] Furthermore, the lifting assembly 2 also includes an external guide rail 25, the length direction of the external guide rail 25 is the same as the length direction of the mounting assembly 1, the gripper mounting plate 28 moves along the length direction of the external guide rail 25, and the contact surface between the gripper mounting plate 28 and the external guide rail 25 is concave.

[0024] Specifically, the mounting surface of the external guide rail 25 is fixed to the outer surface of the mounting assembly 1 by means of a fixed connection such as a bolt connection, and the gripper mounting disk 28 is slidably connected to the external guide rail 25 by a slider, wherein the contact surface between the slider and the external guide rail 25 is concave, which enables the external guide rail 25 to limit the freedom of the gripper mounting disk 28 perpendicular to its moving direction, thereby further improving the positioning accuracy of the gripper mounting disk 28 in the horizontal plane direction, thereby enabling the gripper mounting disk 28 to achieve high-precision positioning accuracy in three dimensions, thereby ensuring the positioning accuracy of the gripper mounting disk 28 during rapid movement.

[0025] Furthermore, the positioning assembly 3 includes: an upper sensor 31 arranged on the mounting assembly 1, which sends an upper signal that the gripper mounting disk 28 reaches the upper limit of the stroke; a fixing pin 27 arranged on the mounting assembly 1, the upper signal controls the fixing pin 27 to fix the gripper mounting disk 28 at the upper limit of the stroke; a lower sensor 32 arranged on the mounting assembly 1, which sends a lower signal that the gripper mounting disk 28 reaches the lower limit of the stroke; and an oil pressure buffer 33 arranged on the mounting assembly 1, which limits the gripper mounting disk 28 from exceeding the lower limit of the stroke.

[0026] Specifically, an upper sensor 31 is installed at the upper limit of the stroke of the gripper mounting plate 28. When the upper sensor 31 detects the gripper mounting plate 28, the counterweight stops falling, and the fixing pin 27 fixedly connected to the mounting assembly 1 by means of bolt connection or the like can be extended under the push of the cylinder, and its extended portion can be embedded in the gripper mounting plate 28 that has reached the upper limit of the stroke, so that the two are fixedly connected, thereby enabling the gripper mounting plate 28 to be stably maintained at the upper limit of the stroke, which is convenient for the next step of fetal membrane transportation; secondly, a lower sensor 32 is installed at the lower limit of the stroke of the gripper mounting plate 28. When the lower sensor 32 detects the gripper mounting plate 28, the counterweight stops rising, and the top of the oil pressure buffer 33 fixedly connected to the mounting assembly 1 by means of bolt connection or the like contacts the bottom end of the gripper mounting plate 28, thereby preventing the gripper mounting plate 28 from continuing to fall, and both the oil pressure buffer 33 and the fixing pin 27 can adjust their own positions according to the height requirements for transporting the fetal membrane, thereby adjusting the upper and lower limits of the stroke of the gripper mounting plate 28, thereby improving the applicability of the utility model.

[0027] Furthermore, the lifting component 2 also includes: a synchronous wheel 23 arranged at the top of the mounting component 1, and the axial side surface of the synchronous wheel 23 is perpendicular to the length direction of the mounting component 1; a servo motor 21 driving the synchronous wheel 23; a synchronous belt 22 in contact with the outer peripheral surface of the synchronous wheel 23, one end of the synchronous belt 22 is connected to the counterweight, and the other end of the synchronous belt 22 is connected to the gripper mounting plate 28, the counterweight and the gripper mounting plate 28 are respectively distributed on both sides of the synchronous wheel 23; and an internal guide rail 26 arranged inside the mounting component 1, and the internal guide rail 26 is the moving path of the counterweight.

[0028] Specifically, the middle surface of the outer peripheral surface of the synchronous wheel 23 is parallel to the length direction of the installation component 1, and the movement direction of the synchronous belt 22 that is not in contact with the synchronous wheel 23 is parallel to the length direction of the installation component 1. The counterweight and the gripper mounting plate 28 connected to the two ends of the synchronous belt 22 through the synchronous belt 22 pressure plate are driven by the synchronous belt 22. The movement directions of the two are opposite and parallel to the length direction of the installation component 1, and the counterweight moves along the smooth surface of the internal guide rail 26.

[0029] Secondly, the power source of the synchronous wheel 23 is the servo motor 21. In the prior art, the servo motor 21 includes: a motor body, an encoder, and a driver. The driver receives the command signal of the controller, adjusts the motor and voltage of the motor, and controls the speed and position of the motor. The encoder detects the position and speed of the motor and feeds back to the driver to form a closed-loop control, which can provide accurate position feedback, so that the position control accuracy of the motor is very high, and then the position control accuracy of the synchronous belt 22 is very high, and then the position control accuracy of the gripper mounting plate 28 in the height direction is very high, thereby improving the position accuracy of the fetal membrane in the height direction of this embodiment.

[0030] Furthermore, at least two synchronous wheels 23 with coincident axes are arranged at the top end of the mounting assembly 1 .

[0031] Specifically, the servo motor 21 drives two synchronous wheels 23 and two synchronous belts 22 simultaneously, which can improve the carrying capacity of the lifting assembly 2 and improve the operating safety of this embodiment.

[0032] Furthermore, the lifting assembly 2 also includes a broken belt detection member 29 , one end of which is fixedly connected to the end of the synchronous belt 22 , and the other end of which is fixedly connected to the gripper mounting plate 28 .

[0033] Specifically, the broken belt detection component 29 includes an L-shaped tooth plate. When the synchronous belt 22 is separated from the gripper mounting plate 28, the L-shaped tooth plate moves away from the original position. The operator can know in time that the synchronous belt 22 is separated from the gripper mounting plate 28, and then stop the machine operation and repair the machine, thereby improving the safety of the operation of this embodiment.

[0034] Furthermore, the mounting assembly 1 comprises a mounting base 11, a top surface of which is connected to a welding frame 12, and a length direction of the welding frame 12 is the same as a movement direction of the counterweight.

[0035] Specifically, the installation position of the mounting base 11 also needs to be accurately positioned and fixed on the ground to ensure its position accuracy in the automobile welding production line, and then ensure the relative position of this embodiment and the fetal membrane, thereby improving the high-precision positioning accuracy of this embodiment and ensuring accurate grasping or carrying of the fetal membrane; secondly, the welding frame 12 is welded from metal pipes, and its length direction is perpendicular to the ground. The counterweight slides inside the welding frame 12, and the gripper mounting plate 28 slides outside the welding frame 12.

[0036] Furthermore, it also includes a maintenance component 4, which includes: a ladder 42 connected to the installation component 1 on the side; an anti-fall protection net 43 arranged on the upper half of the ladder 42, and the mesh diameter of the anti-fall protection net 43 is smaller than the normal adult body size; and a maintenance platform 41 arranged at the top of the ladder 42, and the top height of the maintenance platform 41 is not lower than the top height of the installation component 1.

[0037] Specifically, the working surface of the ladder 42 is perpendicular to the outer surface of the welding frame 12 and the ground. The operator's climbing side of the ladder is welded with an anti-fall protection net 43. The anti-fall protection net 43 is welded to the upper half of the welding frame 12 to ensure the operator's safety at high altitudes. The operator climbs to the maintenance platform 41 welded on the top surface of the ladder 42 to repair the top surface part of the lifting assembly 2, such as the servo motor 21 and the synchronous wheel 23, which improves the maintenance convenience of this embodiment.

[0038] Although the 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.

[0039] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. An automatic lifting platform for rolled tire membrane with a synchronous belt lifting mechanism, comprising a mounting assembly (1), characterized in that: The automatic lifting platform for rolled fetal membrane also includes: A lifting assembly (2) disposed on the mounting assembly (1), the lifting assembly (2) being provided with a gripper mounting plate (28) and a counterweight, the counterweight being capable of driving the gripper mounting plate (28) to move along the length direction of the mounting assembly (1), the counterweight moving in a direction opposite to that of the gripper mounting plate (28); and A positioning assembly (3) is arranged on the mounting assembly (1), and the positioning assembly (3) is capable of limiting the movement stroke of the gripper mounting plate (28) along the length direction of the mounting assembly (1).

2. The automatic lifting platform for rolling fetal membrane according to claim 1, characterized in that: The lifting assembly (2) further comprises an external guide rail (25), the length direction of the external guide rail (25) being the same as the length direction of the mounting assembly (1), the gripper mounting plate (28) moving along the length direction of the external guide rail (25), and the contact surface between the gripper mounting plate (28) and the external guide rail (25) being concave.

3. The automatic lifting platform for rolling fetal membrane according to claim 2 is characterized in that: The positioning component (3) comprises: An upper sensor (31) disposed on the mounting assembly (1), the upper sensor (31) sending an upper signal indicating that the gripper mounting plate (28) has reached an upper limit of its travel; A fixing pin (27) disposed on the mounting assembly (1), wherein the upper signal controls the fixing pin (27) to fix the gripper mounting plate (28) at an upper limit of the travel; A lower sensor (32) disposed on the mounting assembly (1), the lower sensor (32) sending a lower signal indicating that the gripper mounting plate (28) has reached a lower limit of travel; and An oil pressure buffer (33) is arranged on the mounting assembly (1), and the oil pressure buffer (33) limits the gripper mounting plate (28) from exceeding a lower limit of travel.

4. The automatic lifting platform for rolling fetal membrane according to claim 1, characterized in that: The lifting assembly (2) further comprises: A synchronous wheel (23) arranged at the top end of the mounting assembly (1), wherein the axial side surface of the synchronous wheel (23) is perpendicular to the length direction of the mounting assembly (1); A servo motor (21) driving the synchronous wheel (23); a synchronous belt (22) in contact with the outer peripheral surface of the synchronous wheel (23), one end of the synchronous belt (22) being connected to the counterweight, and the other end of the synchronous belt (22) being connected to the gripper mounting plate (28), the counterweight and the gripper mounting plate (28) being respectively distributed on both sides of the synchronous wheel (23); and An internal guide rail (26) is arranged inside the mounting assembly (1), and the internal guide rail (26) is a moving path for the counterweight.

5. The automatic lifting platform for rolling fetal membrane according to claim 4 is characterized in that: At least two synchronous wheels (23) with coincident axes are arranged at the top end of the mounting assembly (1).

6. The automatic lifting platform for rolling fetal membrane according to claim 5, characterized in that: The lifting assembly (2) further comprises a broken belt detection member (29), one end of which is fixedly connected to the end of the synchronous belt (22), and the other end of which is fixedly connected to the gripper mounting plate (28).

7. The automatic lifting platform for rolling fetal membrane according to claim 1, characterized in that: The mounting assembly (1) comprises a mounting base (11), the top surface of the mounting base (11) is connected to a welding frame (12), and the length direction of the welding frame (12) is the same as the movement direction of the counterweight.

8. The automatic lifting platform for rolling fetal membrane according to claim 1, characterized in that: Also included is a maintenance component (4), the maintenance component (4) comprising: A ladder (42) connected to the mounting assembly (1) at the side; An anti-falling protection net is arranged on the upper part of the climbing ladder (42), wherein the mesh diameter of the anti-falling protection net is smaller than the size of a normal adult; and A maintenance platform (41) is arranged at the top of the ladder (42), and the top height of the maintenance platform (41) is not lower than the top height of the installation assembly (1).

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