Aligning and positioning mechanism for automatic production line of hydraulic cylinder barrel

Abstract

An aligning and positioning mechanism for an automatic production line of a hydraulic cylinder barrel comprises a horizontal workbench, a left supporting wheel set, a right supporting wheel set, a distance measuring sensor, a guide sliding rail, a laser detection device, a servo motor and a controller. The left supporting wheel set, the right supporting wheel set and the distance measuring sensor are installed on the horizontal workbench at intervals from left to right and located on the same straight line. The two ends of the cylinder barrel are supported on the left supporting wheel set and the right supporting wheel set in a rolling mode respectively. The laser detection device is slidably mounted on the guide slide rail, and a linear reciprocating driving mechanism for driving the laser detection device to move is arranged on the guide slide rail; the servo motor drives the right supporting wheel set to rotate. The cylinder barrel feeding and discharging device avoids the situation that the cylinder barrel interferes with a middle frame on a machine tool during feeding and discharging of a mechanical arm, achieves automatic feeding and discharging of an automatic production line of the cylinder barrel, solves the problem that the position accuracy of a connector base is not enough after flat falling, reduces production of unqualified products, and reduces the cost of automatic machining.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic processing of hydraulic support jack cylinder barrels, in particular to an automatic production line alignment and positioning mechanism for hydraulic cylinder barrels. Background Art

[0002] The cylinder is a key component in the hydraulic support jack. Most cylinders need to be welded with a joint seat near the cylinder mouth. The processing procedures of the cylinder are flattening, welding the cavity, scraping and rolling, and turning the stopper.

[0003] The existing cylinder processing procedures are carried out independently, which can no longer meet the processing needs of cylinders. In order to improve the production efficiency of cylinders, ensure product quality, reduce labor costs and reduce labor intensity, the automation of cylinder production lines is imperative. However, in the process of automatic transformation of cylinder production lines, the key to the transformation is to realize automatic loading and unloading and ensure the position accuracy of the cylinder upper cavity joint seat.

[0004] At present, manual loading and unloading is done by transferring workpieces through cantilever cranes. This method is not easy to find the center of gravity of the cylinder barrel, and the cylinder barrel is prone to tilt after lifting, causing accidents. When changing to automatic loading and unloading, since the length of the cylinder barrel has various specifications, and the clamping requires the help of the intermediate frame on the machine tool, when the manipulator transfers the cylinder barrel, it cannot find the center of the cylinder barrel and the position of the joint seat, resulting in inaccurate grasping position. When feeding the machine tool, it is easy to cause interference between the cylinder barrel and the intermediate frame on the machine tool; the existing processing sequence is to flatten the cylinder barrel first, and then weld the joint seat with the end face as the reference. This method is not conducive to the automated connection between the processes. It is changed to first weld the cavity joint seat and then flatten it with the end face of the joint seat as the reference, which makes it difficult to ensure the position accuracy of the joint seat.

[0005] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0006] The purpose of the utility model is to address the deficiencies in the prior art and thereby provide a hydraulic cylinder barrel automatic production line alignment and positioning mechanism. The utility model avoids the interference between the cylinder barrel and the middle frame on the machine tool when the manipulator loads and unloads materials, realizes the automatic loading and unloading of the cylinder barrel automatic production line, solves the problem of insufficient position accuracy of the joint seat after leveling, reduces the generation of defective products, and reduces the cost of automated processing.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hydraulic cylinder barrel automatic production line alignment and positioning mechanism, including a horizontal workbench, a left support wheel group, a right support wheel group, a distance sensor, a guide slide rail, a laser detection device, a servo motor and a controller;

[0008] The left supporting wheel group, the right supporting wheel group and the distance measuring sensor are installed on a horizontal workbench from left to right and are in the same straight line. The measuring end of the distance measuring sensor is arranged toward the right supporting wheel group. The length of the cylinder is greater than the distance between the left supporting wheel group and the right supporting wheel group. The two ends of the cylinder are rollingly supported on the left supporting wheel group and the right supporting wheel group respectively.

[0009] The guide rail is fixedly installed on a horizontal workbench in the left-right direction and is parallel to the straight line where the left supporting wheel group, the right supporting wheel group and the distance measuring sensor are located. The length of the guide rail is greater than the length of the cylinder. The laser detection device is slidably installed on the guide rail. A linear reciprocating drive mechanism for driving the laser detection device to move is arranged on the guide rail. The detection end of the laser detection device is arranged toward the straight line where the left supporting wheel group, the right supporting wheel group and the distance measuring sensor are located.

[0010] The servo motor is installed on the horizontal workbench and is located on one side of the right supporting wheel group, and the servo motor drives the right supporting wheel group to rotate;

[0011] The controller is respectively connected with the distance measuring sensor, the laser detection device, the servo motor and the linear reciprocating drive mechanism.

[0012] Based on the above, the left supporting wheel group and the right supporting wheel group have the same structure and are arranged symmetrically;

[0013] The right supporting wheel group includes two rollers, which are installed on a horizontal workbench with a front-to-back interval. The central axes of the rollers are horizontally arranged along the left-right direction, and a servo motor drives one of the rollers to rotate.

[0014] Based on the above, the distance measuring sensor is directly opposite to the middle gap between the two rollers of the right supporting wheel group.

[0015] Based on the above, the left end of the cylinder is rollingly supported on the two rollers of the left supporting wheel group, and the right end of the cylinder is rollingly supported on the two rollers of the right supporting wheel group.

[0016] Based on the above, the linear reciprocating drive mechanism includes a stepper motor and a lead screw. The stepper motor is arranged at one end of the guide rail, a slider is slidably installed on the guide rail, the laser detection device is fixedly installed on the slider, the lead screw horizontally penetrates the slider in the left and right directions and is threadedly connected to the slider, one end of the lead screw is close to the stepper motor and is coaxially connected to the motor shaft of the stepper motor, a support plate is arranged at the other end of the guide rail, the other end of the lead screw is rotatably connected to the support plate, and the controller is connected to the stepper motor.

[0017] Compared with the prior art, the utility model has substantial characteristics and progress. Specifically, the utility model is arranged before the leveling process, and has the following beneficial effects: the cylinder to be processed is transferred by a robot and placed on the two rollers of the left supporting wheel group and the two rollers of the right supporting wheel group, wherein the cylinder mouth end of the cylinder with a joint seat welded thereon is rollingly supported on the two rollers of the right supporting wheel group, and then the controller controls the servo motor to rotate, and the servo motor drives one of the rollers of the right supporting wheel group to rotate, and then the roller drives the cylinder to rotate around the axis through friction, and when the distance measuring sensor detects the joint seat, the controller controls the servo motor to stop, and the cylinder stops rotating, so that no matter where the joint seat is located on the cylinder, it can be rotated to the position detected by the distance measuring sensor, thereby solving the problem of insufficient position accuracy of the joint seat after leveling and reducing the number of inappropriate The production of high-quality products reduces the cost of automated processing; the distance measuring sensor measures the distance from the joint seat to the distance measuring sensor and the distance from the cylinder mouth end face to the distance measuring sensor respectively, and at the same time the linear reciprocating drive mechanism drives the laser detection device to move along the guide rail, and the laser detection device detects the two end faces of the cylinder respectively, and calculates the length of the cylinder by moving the distance, and then the distance measuring sensor and the laser detection device transmit their respective measurement data to the controller, and the controller can determine the center of the cylinder according to the received measurement data, thereby realizing the alignment and positioning of the cylinder, and then the controller controls the manipulator to clamp the cylinder at the center of the cylinder for precise loading, and starts the flattening processing, avoiding the situation where the cylinder or the joint seat interferes with the middle frame on the machine tool when the manipulator loads and unloads due to uncertainty of the cylinder center and the position of the joint seat, and realizes the automatic loading and unloading of the cylinder automated production line.

[0018] To sum up, the utility model avoids the interference between the cylinder and the middle frame on the machine tool when the robot is loading and unloading, realizes the automatic loading and unloading of the cylinder automatic production line, solves the problem of insufficient position accuracy of the joint seat after leveling, reduces the production of defective products, and reduces the cost of automated processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the utility model, omitting the guide rail and the laser detection device.

[0020] Figure 2 It is a top view of the utility model.

[0021] In the figure: 1. horizontal workbench; 2. distance measuring sensor; 3. guide rail; 4. laser detection device; 5. servo motor; 6. roller; 7. cylinder; 8. joint seat. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0023] like Figure 1 and 2 As shown, a hydraulic cylinder barrel automatic production line alignment and positioning mechanism includes a horizontal workbench 1, a left supporting wheel group, a right supporting wheel group, a distance measuring sensor 2, a guide rail 3, a laser detection device 4, a servo motor 5 and a controller (not shown);

[0024] The left supporting wheel group, the right supporting wheel group and the distance measuring sensor 2 are installed on the horizontal workbench 1 from left to right and are in the same straight line. The measuring end of the distance measuring sensor 2 is arranged toward the right supporting wheel group. The length of the cylinder 7 is greater than the distance between the left supporting wheel group and the right supporting wheel group. The two ends of the cylinder 7 are rollingly supported on the left supporting wheel group and the right supporting wheel group respectively.

[0025] The guide rail 3 is fixedly installed on the horizontal workbench 1 along the left-right direction and is parallel to the straight line where the left supporting wheel group, the right supporting wheel group and the distance sensor 2 are located. The length of the guide rail 3 is greater than the length of the cylinder 7. The laser detection device 4 is slidably installed on the guide rail 3. A linear reciprocating driving mechanism for driving the laser detection device 4 to move is provided on the guide rail 3. The detection end of the laser detection device 4 is arranged toward the straight line where the left supporting wheel group, the right supporting wheel group and the distance sensor 2 are located.

[0026] The servo motor 5 is installed on the horizontal workbench 1 and is located on one side of the right supporting wheel group. The servo motor 5 drives the right supporting wheel group to rotate;

[0027] The controller is connected to the distance measuring sensor 2, the laser detection device 4, the servo motor 5 and the linear reciprocating drive mechanism respectively.

[0028] The left supporting wheel group and the right supporting wheel group have the same structure and are arranged symmetrically on the left and right;

[0029] The right supporting wheel group includes two rollers 6, which are installed on the horizontal workbench 1 with a front-to-back interval. The central axes of the rollers 6 are horizontally arranged along the left-right direction, and the servo motor 5 drives one of the rollers 6 to rotate.

[0030] The distance measuring sensor 2 is directly opposite to the gap between the two rollers 6 of the right supporting wheel group.

[0031] The left end of the cylinder 7 is rollingly supported on the two rollers 6 of the left supporting wheel group, and the right end of the cylinder 7 is rollingly supported on the two rollers 6 of the right supporting wheel group.

[0032] The linear reciprocating drive mechanism of this embodiment includes a stepper motor and a lead screw, the stepper motor is arranged at one end of the guide rail 3, a slider is slidably mounted on the guide rail 3, a laser detection device 4 is fixedly mounted on the slider, the lead screw horizontally penetrates the slider in the left-right direction and is threadedly connected to the slider, one end of the lead screw is close to the stepper motor and is coaxially connected to the motor shaft of the stepper motor, a support plate is arranged at the other end of the guide rail 3, the other end of the lead screw is rotatably connected to the support plate, and the controller is connected to the stepper motor. The stepper motor and the lead screw are both shown in the figure.

[0033] When the present embodiment is working, the manipulator first transfers the cylinder barrel 7 to be processed and places it on the two rollers 6 of the left supporting wheel group and the two rollers 6 of the right supporting wheel group, wherein the cylinder mouth end of the cylinder barrel 7 welded with the joint seat 8 is rollingly supported on the two rollers 6 of the right supporting wheel group, and then the controller controls the servo motor 5 to rotate, and the servo motor 5 drives one of the rollers 6 of the right supporting wheel group to rotate, and then the roller 6 drives the cylinder barrel 7 to rotate around the axis through friction, until the distance measuring sensor 2 detects the joint seat 8, the controller controls the servo motor 5 to stop, and the cylinder barrel 7 stops rotating, so that no matter where the joint seat 8 is located on the cylinder barrel 7, the joint seat 8 can be rotated to the position detected by the distance measuring sensor 2, which solves the problem of insufficient position accuracy of the joint seat 8 after leveling, reduces the generation of defective products, and reduces the cost of automated processing; the distance measuring sensor 2 respectively measures the distance from the joint seat 8 to the distance measuring sensor 2 and the distance from the cylinder mouth end face of the cylinder barrel 7 to the distance measuring sensor 2, and at the same time The stepper motor drives the lead screw to rotate, and the lead screw drives the slider to drive the laser detection device 4 to move along one end of the guide rail 3 to the other end of the guide rail 3. The laser detection device 4 detects the two end surfaces of the cylinder 7 respectively, and calculates the length of the cylinder 7 according to the moving distance of the laser detection device 4 when detecting the two end surfaces of the cylinder 7. (The distance moved by the lead screw driving the slider can be obtained by the number of rotations of the stepper motor, and then the moving distance of the laser detection device 4 can be obtained. This is a conventional technology). Then the ranging sensor 2 and the laser detection device 4 transmit their respective measurement data to the controller. The controller can determine the center of the cylinder 7 according to the received measurement data, thereby realizing the alignment and positioning of the cylinder 7. After that, the controller controls the manipulator to clamp the cylinder 7 at the center of the cylinder 7 for precise loading and starts the flattening processing, avoiding the situation where the cylinder 7 and the middle frame on the machine tool interfere with each other when the manipulator loads and unloads due to uncertainty of the center of the cylinder 7 and the position of the joint seat 8, thereby realizing the automatic loading and unloading of the cylinder 7 automated production line.

[0034] In other embodiments, the linear reciprocating drive mechanism may also be a linear motor sliding on the guide rail 3, and the laser detection device 4 is directly mounted on the linear motor.

[0035] The distance sensor 2, the laser detection device 4, the servo motor 5, the controller, the stepper motor and the screw rod are all conventional technologies and can be purchased on the market. The specific structure and working principle are not described in detail. The control part of the utility model is conventional control technology and does not involve new computer programs.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A hydraulic cylinder barrel automatic production line alignment and positioning mechanism, characterized in that: It includes a horizontal workbench, a left supporting wheel group, a right supporting wheel group, a distance measuring sensor, a guide rail, a laser detection device, a servo motor and a controller; The left supporting wheel group, the right supporting wheel group and the distance measuring sensor are installed on a horizontal workbench from left to right and are in the same straight line. The measuring end of the distance measuring sensor is arranged toward the right supporting wheel group. The length of the cylinder is greater than the distance between the left supporting wheel group and the right supporting wheel group. The two ends of the cylinder are rollingly supported on the left supporting wheel group and the right supporting wheel group respectively. The guide rail is fixedly installed on a horizontal workbench in the left-right direction and is parallel to the straight line where the left supporting wheel group, the right supporting wheel group and the distance measuring sensor are located. The length of the guide rail is greater than the length of the cylinder. The laser detection device is slidably installed on the guide rail. A linear reciprocating drive mechanism for driving the laser detection device to move is arranged on the guide rail. The detection end of the laser detection device is arranged toward the straight line where the left supporting wheel group, the right supporting wheel group and the distance measuring sensor are located. The servo motor is installed on the horizontal workbench and is located on one side of the right supporting wheel group, and the servo motor drives the right supporting wheel group to rotate; The controller is respectively connected with the distance measuring sensor, the laser detection device, the servo motor and the linear reciprocating drive mechanism.

2. The hydraulic cylinder barrel automatic production line alignment and positioning mechanism according to claim 1, characterized in that: The left supporting wheel group and the right supporting wheel group have the same structure and are arranged symmetrically on the left and right; The right supporting wheel group includes two rollers, which are installed on a horizontal workbench with a front-to-back interval. The central axes of the rollers are horizontally arranged along the left-right direction, and a servo motor drives one of the rollers to rotate.

3. The hydraulic cylinder barrel automatic production line alignment and positioning mechanism according to claim 2 is characterized by: The distance measuring sensor is opposite to the middle gap between the two rollers of the right supporting wheel assembly.

4. The hydraulic cylinder barrel automatic production line alignment and positioning mechanism according to claim 2 is characterized by: The left end of the cylinder barrel is rollingly supported on two rollers of the left supporting wheel group, and the right end of the cylinder barrel is rollingly supported on two rollers of the right supporting wheel group.

5. The hydraulic cylinder barrel automatic production line alignment and positioning mechanism according to claim 1, characterized in that: The linear reciprocating drive mechanism includes a stepper motor and a lead screw. The stepper motor is arranged at one end of a guide rail. A slider is slidably installed on the guide rail. The laser detection device is fixedly installed on the slider. The lead screw horizontally penetrates the slider in the left and right directions and is threadedly connected to the slider. One end of the lead screw is close to the stepper motor and is coaxially connected to the motor shaft of the stepper motor. A support plate is arranged at the other end of the guide rail. The other end of the lead screw is rotatably connected to the support plate. The controller is connected to the stepper motor.

Images