Floating grabbing mechanism for conveying chain
Technical Field
The invention relates to the technical field of automatic equipment, in particular to a floating grabbing mechanism for a conveying chain.
Background
The conveying line is a common automatic conveying means for a production line, and a clamping cylinder is often adopted for a robot for picking up and grabbing materials to drive a clamping jaw to carry out grabbing action, and then the robot is placed on the production line. Referring to fig. 1, the existing cylinder part needs to be grabbed and transferred to a production line, because the cylinder part needs to be grabbed by a robot and accurately placed in a carrier of the production line, the required positioning precision of the carrier is within 1mm, but when the robot gripper grabs the cylinder part, the cylinder part is positioned inaccurately due to the deviation of the stepping and stopping moment of a conveying line, and the position error of 2-5 mm exists, so that a grabbing device capable of compensating the position deviation of the material generated at the stopping moment is needed to be designed, the robot is assisted to accurately grab the material, accurately placed in the carrier of the production line, so that the robot is prevented from attaching more position sensors, the positioning release after the material is grabbed is detected at all times accurately, more data calculation is caused, the cost of the sensors and the controller equipment is increased, the automatic control programming program can be simplified, the calculated amount of the controller is reduced, and the equipment failure rate is reduced.
Disclosure of Invention
The purpose of the invention is that: in order to improve the position accuracy of grabbing materials and placing the materials by a robot, the current situations of adding a sensor and a controller to calculate, control and compensate and correct position data and increasing numerical control calculation amount and equipment cost are abandoned, and a floating grabbing mechanism for a conveying chain is designed, so that the position deviation of the materials generated at the moment of being stopped can be compensated.
The technical scheme adopted for solving the problems is as follows:
a floating grabbing mechanism for a conveying chain comprises a base, a supporting plate, a guide rod and guide sleeve assembly, a floating plate, a sliding block and sliding rail assembly, a rotary clamping assembly and a position correcting assembly which are fixedly connected to a mechanical arm of a robot,
a plurality of guide rod and guide sleeve assemblies are connected between the base and the supporting plate, a sliding block and sliding rail assembly is arranged on the supporting plate, a floating plate is fixedly connected on the sliding block, a rotary clamping assembly is arranged on the floating plate,
the rotary clamping assembly comprises a rotary air cylinder, a driving gear, two racks which are arranged in a central symmetry way, a clamping plate and a clamping arm, wherein a rotary block of the rotary air cylinder is coaxially connected with the driving gear, two sides of the driving gear are meshed with the two parallel racks for transmission, the two racks are respectively connected with the clamping plates on two sides, opposite clamping arms are connected below the clamping plates, the clamping arms below the clamping plates on two sides correspond to each other, and a holding and clamping gesture is implemented on materials,
the position correction assembly comprises a pushing cylinder, a positioning cone and a positioning block, wherein the pushing cylinder is fixedly connected to the base, a pushing rod of the pushing cylinder is connected with the positioning cone, a positioning groove arranged on the positioning block is in seamless fit with the positioning cone, the positioning block is fixedly connected to the floating plate, and the pushing cylinder pushes the floating plate to horizontally move and calibrate the position.
Further, a sliding block and sliding rail assembly is further arranged between the clamping plates and the supporting plate, so that the clamping plates on two sides can slide linearly in opposite directions.
Further, limiting blocks are arranged on two sides of the supporting plate and used for limiting the outward expansion displacement size of the clamping plates on two sides.
The beneficial effects of the invention are as follows:
this a float and snatch mechanism for conveyer chain drives whole grip block activity ground translation with the help of the floating plate to material on the conveyer chain does not take place the skew ground by the centre gripping arm centre gripping, and after the lifting, utilize pushing cylinder with locating cone and locating piece joint cooperation, the calibration floating plate gets back to the reference position, just also calibrated in the carrier that the material of being held can accurately place the production line, practical convenient.
Drawings
FIG. 1 is a schematic operation of the floating gripper mechanism for a conveyor chain of the present embodiment;
FIG. 2 is a side plan view of the floating gripping mechanism for the conveyor chain of the present embodiment;
FIG. 3 is a side bottom view of the floating gripping mechanism for the conveyor chain of the present embodiment;
FIG. 4 is a schematic structural view of a position correction assembly according to the present embodiment;
FIG. 5 is a bottom view of the floating grab mechanism for the conveyor chain of the present embodiment;
the device comprises a 1-conveying chain, a 2-chain link, a 3-cylinder part, a 4-floating grabbing mechanism, a 5-base, a 6-guide rod guide sleeve assembly, a 7-rotary cylinder, an 8-floating plate, a 9-supporting plate, a 10-cylinder outer wall, an 11-chain link carrier, a 12-pushing cylinder, a 13-first rack, a 14-first clamping plate, a 15-clamping arm, a 16-driving gear, a 17-second clamping plate, a 18-second rack, a 19-ipsilateral clamping arm, a 20-positioning cone, a 21-positioning block, a 22-sliding block and sliding rail assembly, a 23-limiting block and a 24-position sensor.
Detailed Description
The technical solutions of the present invention will be clearly and completely described by way of example with reference to the accompanying drawings of the specification of the present invention.
Referring to fig. 1 to 4, the present embodiment provides a floating grabbing mechanism for a conveying chain, which includes a base 5, a support plate 9, a guide rod and guide sleeve assembly 6, a floating plate 8, a slider and slide rail assembly 22, a rotary clamping assembly and a position correction assembly, which are fixedly connected to a robot arm.
Referring to fig. 4, 3 guide rod guide sleeve assemblies 6 are connected between the base 5 and the support plate 9, a slide block and slide rail assembly 22 is arranged on the support plate 9, a floating plate 8 is fixedly connected to the slide block, and a rotary clamping assembly is arranged on the floating plate 8.
Referring to fig. 4 and 5, the rotary clamping assembly includes a rotary cylinder 7, a driving gear 16, two racks arranged in central symmetry, a clamping plate, and a clamping arm 15, wherein a rotary block of the rotary cylinder 7 is coaxially connected with the driving gear 16, two sides of the driving gear 16 are engaged with two parallel racks for transmission, the two racks are respectively connected with the clamping plates on two sides, opposite clamping arms are connected below the clamping plates, the clamping arms below the clamping plates on two sides correspond, and a holding and clamping gesture is implemented on the cylinder part 3.
Referring to fig. 4, the position correction assembly includes a pushing cylinder 12, a positioning cone 20 and a positioning block 21, the pushing cylinder 12 is fixedly connected to the base 5, a pushing rod of the pushing cylinder 12 is connected to the positioning cone 20, a positioning groove arranged on the positioning block 21 is aligned to the lower part of the positioning cone 20 and is in seamless fit with the positioning groove, the positioning block 21 is fixedly connected to the floating plate 8, the pushing cylinder 12 pushes the floating plate 8 to drive the floating plate 8 to horizontally move to a calibration posture, and after the cylinder part 3 is clamped, the cylinder part is guaranteed to be placed in a carrier (not shown in the figure) of a production line with accurate clamping position precision.
Referring to fig. 4, a sliding block and sliding rail assembly 22 is further disposed between the clamping plate and the supporting plate 9, so as to ensure that the clamping plates on two sides slide linearly in opposite directions.
Referring to fig. 4, two sides of the supporting plate 9 are provided with limiting blocks 23 for limiting the outward expanding displacement dimension of the clamping plates at two sides.
Referring to fig. 4, a position sensor 24 is further disposed on one side of the supporting plate 9, and is matched with the robot to position the cylindrical component 3 on the chain link carrier 11 on the conveying chain 1, so as to facilitate preliminary positioning and grabbing.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above, and various changes, modifications, substitutions and alterations can be made therein by those having ordinary skill in the art without departing from the spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.