Automatic holding fork blanking locating device for laser cutting

Abstract

The utility model relates to the technical field of automatic machinery, and particularly discloses a laser cutting automatic holding fork blanking locating device which comprises a laser cutting table, a plurality of sawtooth supporting strips are fixedly arranged on the inner side of the laser cutting table at equal intervals, a portal frame and a portal walking device are fixedly arranged at the top end of the laser cutting table, and a telescopic frame is fixedly arranged at the bottom of the portal walking device. A large hydraulic cylinder used for driving the platform base to ascend and descend is arranged at the bottom of a top base of the telescopic frame, and the front end of the platform base is slidably connected with the left embracing fork structure and the right embracing fork structure through double-hole sliding blocks. According to the technical scheme, before the holding fork descends, the photoelectric emission sensor and the photoelectric receiving sensor descend in advance, whether the holding fork structure collides with the sawtooth supporting strip or not is determined through the photoelectric emission sensor and the photoelectric receiving sensor, and the problems that the position is not accurate and the holding fork is prone to colliding with the sawtooth supporting strip during holding fork can be easily solved; and the high equipment cost for judging the position by using a visual system to collect and analyze a large amount of data is also saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic mechanical technology field, concretely is laser cutting automatic embrace fork blanking positioner. BACKGROUND

[0002] At present, along with the wide application of laser cutting machine in sheet metal industry, the traditional manual feeding and discharging has the phenomenon such as recruitment difficulty, labor difficulty, frequent safety accidents, if mechanical structure is used to feed and discharge, the workpiece needs to be clamped by embracing and clamping structure, and manual control of embracing and clamping structure is prone to the situation that the embracing and clamping structure hits the sawtooth strip of cutting table, if the visual system is used to judge the position, a large amount of data acquisition and analysis are needed, which will produce additional equipment cost, and the cost is high, so it is urgent to improve, therefore, we propose laser cutting automatic embrace fork blanking positioner. UTILITY MODEL CONTENTS

[0003] The utility model discloses a laser cutting automatic embrace fork blanking positioner, which solves the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: laser cutting automatic embrace fork blanking positioner, including laser cutting table, the inside of laser cutting table is equidistant and is fixedly arranged with a plurality of sawtooth support strips, the top of laser cutting table is fixedly arranged with gantry, the top center position of gantry is arranged with gantry walking device, the bottom of gantry walking device is fixedly arranged with telescopic stand, and the telescopic stand includes top seat and sleeve type telescopic link, the bottom of top seat of telescopic stand is provided with large -scale hydraulic cylinder for driving platform seat lifting, the vertical end face of platform seat front end is fixedly arranged with double slide bar support on both sides, and both sides double slide bar support are slidably connected with left embrace fork structure and right embrace fork structure through double -hole sliding block, left embrace fork structure includes left swing arm, and the vertical arm bottom of left swing arm is fixedly installed with left embrace fork strip through bolt, right embrace fork structure includes right swing arm, and the vertical arm bottom of right swing arm is fixedly installed with right embrace fork strip through bolt, the bottom of left embrace fork strip and right embrace fork strip is equidistant and is arranged with a plurality of fork grooves, and the middle of platform seat is fixedly arranged with servo motor for driving the synchronous horizontal movement of the horizontal arm of left swing arm and the horizontal arm of right swing arm, the horizontal arm of left swing arm and the horizontal arm of right swing arm are all provided with micro -hydraulic pressure jar, the bottom of micro -hydraulic pressure jar of left swing arm is provided with photoelectric emission sensor, the bottom of micro -hydraulic pressure jar of right swing arm is provided with photoelectric receiving sensor, and the number of photoelectric emission sensor and photoelectric receiving sensor is three.

[0005] Further, three photoelectric emission sensors are horizontally aligned with three photoelectric receiving sensors, and the spacing of adjacent two photoelectric emission sensors is consistent with the spacing of adjacent two sawtooth support strips.

[0006] Furthermore, the three photoelectric transmitting sensors and the three photoelectric receiving sensors are respectively staggered from their corresponding fork slots.

[0007] Furthermore, toothed grooves are provided at the bottom end of the horizontal arm of the left swing arm and the top end of the horizontal arm of the right swing arm. The motor shaft of the servo motor is coaxially connected to a gear, which meshes with the toothed grooves of both the left and right swing arms.

[0008] Furthermore, the gantry includes two parallel track bodies, and the gantry walker includes a housing, a drive motor, and drive wheels. The drive wheels are distributed on both sides of the outer side of the housing, and the drive wheels are in rolling contact with the track bodies.

[0009] Furthermore, the track body surface is provided with raised strips, and the drive wheel has a groove in the middle that fits into the raised strips.

[0010] Furthermore, the double-hole slider has two through holes vertically, and the double-slide rod bracket includes two vertically parallel slide rods, which are fitted and slidably engaged with the through holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The technical solution of this application pre-lowers photoelectric transmitting and receiving sensors before the fork descends, and uses these sensors to determine whether the descending fork structure will collide with the serrated support bar. This can easily solve the problems of inaccurate positioning and easy collision with the serrated support bar during fork descent, and also saves the high cost of using a vision system to determine the position and collect and analyze a large amount of data. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Fig. 1 A 3D view of an automatic laser cutting fork-type unloading and positioning device;

[0015] Fig. 2 This is a schematic diagram of the left-hand fork structure, the right-hand fork structure, and the servo motor.

[0016] Fig. 3 This is a schematic diagram of the gantry crane.

[0017] In the diagram: 1. Laser cutting table; 101. Serrated support bar; 2. Gantry frame; 3. Gantry walker; 4. Large hydraulic cylinder; 5. Telescopic frame; 6. Platform base; 7. Gear; 701. Servo motor; 8. Left swing arm; 9. Photoelectric transmitter sensor; 10. Left gripping fork bar; 1001. Fork groove; 11. Right swing arm; 1101. Gear groove; 12. Photoelectric receiver sensor; 13. Right gripping fork bar; 14. Miniature hydraulic cylinder; 15. Double-hole slider; 16. Double slide bar bracket. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1, as Figs. 1-3As shown, this utility model provides a technical solution: an automatic laser cutting fork unloading and positioning device, including a laser cutting table 1, a plurality of serrated support bars 101 are fixedly arranged at equal intervals on the inner side of the laser cutting table 1, a gantry frame 2 is fixedly arranged at the top of the laser cutting table 1, a gantry walker 3 is arranged at the center of the top of the gantry frame 2, a telescopic frame 5 is fixedly arranged at the bottom of the gantry walker 3, the telescopic frame 5 includes a top seat and a sleeve-type telescopic rod, a platform seat 6 is fixedly arranged at the bottom of the sleeve-type telescopic rod, and a mechanism for driving the platform seat 6 to rise and fall is provided at the bottom of the top seat of the telescopic frame 5. The large hydraulic cylinder 4 and the sleeve-type telescopic rod consist of a sleeve and a rod body. The rod body slides inside the sleeve. A limiting ring is set at the bottom end of the sleeve to prevent the rod body from detaching from the sleeve. The bottom end of the rod body is connected to the platform base 6. The sleeve is fixed to the top base. Double sliding rod brackets 16 are fixedly installed on both sides of the vertical end face at the front end of the platform base 6. The double sliding rod brackets 16 on both sides are slidably connected to the left fork structure and the right fork structure through double-hole sliders 15, respectively. The left fork structure includes a left swing arm 8. The bottom end of the vertical arm of the left swing arm 8 is fixedly installed with a left fork strip 10 by bolts. The right fork structure includes a right swing arm 8. Arm 11, the bottom end of the vertical arm of the right swing arm 11 is fixed with a right gripping fork bar 13 by bolts. The bottom ends of the left gripping fork bar 10 and the right gripping fork bar 13 are both equally spaced with several fork slots 1001. The middle of the platform base 6 is fixed with a servo motor 701 for driving the horizontal arm of the left swing arm 8 and the horizontal arm of the right swing arm 11 to move horizontally synchronously. The horizontal arms of the left swing arm 8 and the right swing arm 11 are both equipped with miniature hydraulic cylinders 14. The bottom of the miniature hydraulic cylinder of the left swing arm 8 is equipped with a photoelectric transmitting sensor 9, and the bottom of the miniature hydraulic cylinder of the right swing arm 11 is equipped with a photoelectric receiving sensor. The number of photoelectric transmitters 9 and photoelectric receivers 12 is three. The gantry frame 2 includes two parallel track bodies. The gantry walker 3 includes a housing, a drive motor and drive wheels. The drive wheels are distributed on both sides of the outer side of the housing. The three photoelectric transmitters 9 are horizontally aligned with the three photoelectric receivers 12 respectively. The distance between two adjacent photoelectric transmitters is consistent with the distance between two adjacent sawtooth support bars. The three photoelectric transmitters 9 and the three photoelectric receivers 12 are staggered with the corresponding fork slots 1001 respectively.

[0020] In one specific embodiment of this utility model, the drive wheels on both sides of the gantry walker 3 are driven by drive motors. There are four drive wheels, and the drive motors drive the drive wheels to rotate through a reduction gear structure and a shaft. The drive motors are controlled by separate motor encoders. The three photoelectric transmitting sensors 9 and photoelectric receiving sensors 12 are divided into three groups, each group including one horizontally aligned photoelectric transmitting sensor 9 and photoelectric receiving sensor 12. Each group of transmitting and receiving sensors is electrically connected to the PLC controller. The photoelectric transmitting sensors 9 and photoelectric receiving sensors 12 are divided into three groups. The fork slots 1001 of the left fork bar 10 and the right fork bar 13 are not misaligned. The photoelectric transmitting sensor 9 and the photoelectric receiving sensor 12 correspond to the insert rods of the left fork bar 10 and the right fork bar 13. The insert rods are narrower and the fork slots 1001 are wider, so that the fork slots 1001 of the left fork bar 10 and the right fork bar 13 can be engaged with the serrated support bar 101. Then, the left fork bar 10 and the right fork bar 13 move inward to grip the workpiece on the surface of the serrated support bar 101.

[0021] The PLC controller sets the PLC program, and the program operation steps are as follows: The micro hydraulic cylinder 14 drives the three photoelectric transmitting sensors 9 and photoelectric receiving sensors 12 to descend synchronously to the set position. When there is an obstruction between the photoelectric transmitting sensor 9 and the photoelectric receiving sensor 12, that is, when the serrated support bar 101 is detected, that is, when the insertion rods of the left and right gripping fork bars are vertically aligned with the serrated support bar 101, the descent of the left and right gripping fork bars will collide with the serrated support bar 101. At this time, the program controls the gantry walker 3 to travel a set distance and then stop. If the obstruction signal between the photoelectric transmitting sensor 9 and the photoelectric receiving sensor 12 disappears, that is, when the insertion rods of the left and right gripping fork bars are misaligned with the serrated support bar 101, when the left and right gripping fork bars descend, the fork groove 1001 of the left gripping fork bar 10 and the fork groove 1001 of the right gripping fork bar 13 can engage with the serrated support bar 101 to avoid the gripping fork from colliding with the serrated support bar 101.

[0022] In the preferred technical solution, the bottom end of the horizontal arm of the left swing arm 8 and the top end of the horizontal arm of the right swing arm 11 are both provided with toothed grooves 1101. The motor shaft of the servo motor 701 is coaxially connected to a gear 7. The gear 7 meshes with the toothed grooves 1101 of the left swing arm 8 and the right swing arm 11. When the gear 7 rotates clockwise, the left swing arm 8 moves to the right and the right swing arm 11 moves to the left. When the gear 7 rotates counterclockwise, the left swing arm 8 moves to the left and the right swing arm 11 moves to the right, thereby realizing the action of clamping and releasing the workpiece by the fork structure.

[0023] In the preferred technical solution, the drive wheel makes rolling contact with the track body, the track body has a raised strip on its surface, and the drive wheel has a groove in the middle that fits into the raised strip. The drive wheel and the track body cooperate through the raised strip and the groove to make the drive wheel move straight and stably along the track body.

[0024] In the preferred technical solution, the double-hole slider 15 has two through holes vertically, and the double-slide rod bracket 16 includes two vertically parallel slide rods. The slide rods are slidably fitted into the through holes. The double-slide rod bracket 16, together with the double-hole slider 15, enables the left swing arm 8 and the right swing arm 11 to move smoothly and stably laterally.

[0025] Working principle: Two miniature hydraulic cylinders 14 are synchronously controlled by a controller. The controller controls the two miniature hydraulic cylinders 14 to extend synchronously a set distance. When there is an obstruction between the photoelectric transmitting sensor 9 and the photoelectric receiving sensor 12, that is, when the serrated support bar 101 is detected, that is, when the insertion rods of the left and right gripping fork bars are vertically aligned with the serrated support bar 101, the left and right gripping fork bars descend and collide with the serrated support bar 101. The PLC program runs, and the PLC controller controls the gantry walker 3 to travel a set distance and then stop. If the obstruction signal between the photoelectric transmitting sensor 9 and the photoelectric receiving sensor 12 disappears, that is, when the insertion rods of the left and right gripping fork bars are misaligned with the serrated support bar 101, the left gripping fork bar descends. The fork groove 1001 of the left fork bar 10 and the fork groove 1001 of the right fork bar 13 can be engaged with the sawtooth support bar 101. The descent of the left fork bar 10 and the right fork bar 13 is controlled by the large hydraulic cylinder 4, which is controlled by an independent controller. When the push rod of the large hydraulic cylinder 4 extends, the telescopic sleeve of the telescopic frame 5 unfolds. At this time, the platform base 6 sinks as a whole, and the left fork bar 10 and the right fork bar 13 descend accordingly. Then, the servo controller of the servo motor 701 rotates forward, and when the gear 7 rotates clockwise, the left swing arm 8 moves to the right and the right swing arm 11 moves to the left. At this time, the fork structure clamps the workpiece. Then, the push rod of the large hydraulic cylinder 4 retracts, the platform base 6 is raised as a whole, and the workpiece is clamped and released from the sawtooth support bar 101.

Claims

1. An automatic fork-holding and positioning device for laser cutting, comprising a laser cutting table (1), wherein a plurality of serrated support strips (101) are fixedly arranged at equal intervals on the inner side of the laser cutting table (1), characterized in that: A gantry frame (2) is fixedly installed at the top of the laser cutting table (1). A gantry walker (3) is installed at the center of the top of the gantry frame (2). A telescopic frame (5) is fixedly installed at the bottom of the gantry walker (3). The telescopic frame (5) includes a top seat and a sleeve-type telescopic rod. A platform seat (6) is fixedly installed at the bottom of the sleeve-type telescopic rod. A large hydraulic cylinder (4) for driving the platform seat (6) to rise and fall is installed at the bottom of the top seat of the telescopic frame (5). Double slide rod brackets (16) are fixedly installed on both sides of the vertical end face of the front end of the platform seat (6). The double slide rod brackets (16) on both sides are slidably connected to the left fork structure and the right fork structure through double hole sliders (15). The left fork structure includes a left swing arm (8). A left fork strip (10) is fixedly installed at the bottom of the vertical arm of the left swing arm (8) by bolts. The right-hand fork structure includes a right swing arm (11). The bottom of the vertical arm of the right swing arm (11) is fixedly installed with a right fork bar (13) by bolts. The bottom of the left fork bar (10) and the right fork bar (13) are provided with several fork slots (1001) at equal intervals. The platform base (6) is fixedly provided with a servo motor (701) for driving the horizontal arm of the left swing arm (8) and the horizontal arm of the right swing arm (11) to move horizontally in sync. The horizontal arm of the left swing arm (8) and the horizontal arm of the right swing arm (11) are both provided with a micro hydraulic cylinder (14). The bottom of the micro hydraulic cylinder of the left swing arm (8) is provided with a photoelectric emission sensor (9), and the bottom of the micro hydraulic cylinder of the right swing arm (11) is provided with a photoelectric receiving sensor (12). The number of the photoelectric emission sensor (9) and the photoelectric receiving sensor (12) are both three.

2. The automatic laser cutting fork unloading and positioning device according to claim 1, characterized in that: The three photoelectric transmitting sensors (9) are horizontally aligned with the three photoelectric receiving sensors (12), and the distance between two adjacent photoelectric transmitting sensors (9) is consistent with the distance between two adjacent sawtooth support bars (101).

3. The automatic laser cutting fork-holding and positioning device according to claim 2, characterized in that: The three photoelectric transmitting sensors (9) and the three photoelectric receiving sensors (12) are respectively staggered from the corresponding fork slots (1001).

4. The automatic laser cutting fork-holding and positioning device according to claim 1, characterized in that: The bottom end of the horizontal arm of the left swing arm (8) and the top end of the horizontal arm of the right swing arm (11) are provided with tooth grooves (1101). The motor shaft of the servo motor (701) is coaxially connected with a gear (7), and the gear (7) meshes with the tooth grooves (1101) of the left swing arm (8) and the right swing arm (11) at the same time.

5. The automatic laser cutting fork unloading and positioning device according to claim 1, characterized in that: The gantry frame (2) includes two parallel track bodies. The gantry walker (3) includes a housing, a drive motor and drive wheels. The drive wheels are distributed on both sides of the outer side of the housing and are in rolling contact with the track bodies.

6. The automatic laser cutting fork unloading and positioning device according to claim 5, characterized in that: The track body has raised strips on its surface, and the drive wheel has a groove in the middle that fits into the raised strips.

7. The automatic laser cutting fork-holding and positioning device according to claim 1, characterized in that: The double-hole slider (15) has two through holes in the vertical direction, and the double-slide rod bracket (16) includes two slide rods arranged in parallel vertically, and the slide rods are slidably fitted into the through holes.

Images