CN212557899U - Double-layer roller way conveying device - Google Patents

Abstract

The utility model discloses a double-deck roll table conveyor, including frame, the last roll table conveying mechanism of setting in the frame, lower roll table conveying mechanism, it is located lower roll table conveying mechanism's top to go up roll table conveying mechanism, it is used for carrying the tray with lower roll table conveying mechanism to go up roll table conveying mechanism, it all is equipped with blocking mechanism to go up roll table conveying mechanism and lower roll table conveying mechanism's output, blocking mechanism is used for blockking that the tray gos forward. The utility model provides a double-deck roll table conveyor has two roll table conveyor who sets up from top to bottom mutually, goes up roll table conveyor and lower roll table conveyor mutually independent, and the tray on the pair roll way is carried for overall structure is compact, sparingly takes up an area of the space.

Description

Double-layer roller way conveying device

Technical Field

The utility model relates to a car bent axle quality testing equipment technical field, in particular to double-deck roll table conveyor.

Background

With the improvement of living standard of people and the convenience of traffic roads, the market demand of automobiles is increasing day by day, automobile manufacturers gradually reform towards intelligent production direction in order to better improve productivity and save labor force.

Automobile crankshafts are important parts of automobile engines, automobile crankshaft finished products which are just produced are not subjected to quality inspection, and direct loading cannot be carried out, so the automobile crankshaft finished products need to be conveyed to a downstream part of a quality inspection line after being qualified through the quality inspection line, then the AGV carrying trolley is waited to carry trays and crankshafts to a loading position, empty trays generated after loading is completed can be sent back to a feeding point of the quality inspection line by the AGV carrying trolley, in order to save space and improve carrying efficiency, the quality inspection line is expected to have an automobile crankshaft conveying function and an empty tray returning function at the same time, a double-layer roller way conveying device needs to be researched as the downstream part of the quality inspection line, the problem that the existing roller way conveying device can only carry out single-line conveying is solved, one roller way is used for conveying the trays carrying the automobile crankshaft finished products, and the other roller way is used for conveying the empty trays urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art's weak point, the utility model aims at providing a double-deck roller conveyor aims at having two independent work piece conveying capacity.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a double-deck roll table conveyor, includes the frame, sets up last roll table conveying mechanism, lower roll table conveying mechanism in the frame, it is located lower roll table conveying mechanism's top to go up roll table conveying mechanism, go up roll table conveying mechanism and lower roll table conveying mechanism and be used for carrying the tray, it all is equipped with stop mechanism to go up roll table conveying mechanism and lower roll table conveying mechanism's output, stop mechanism is used for stopping the tray and gos forward.

The blocking mechanism comprises a first support plate, a driving cylinder vertically arranged on the first support plate upwards and a baffle arranged at the end part of a piston rod of the driving cylinder.

The input end of the upper roller conveying mechanism and the input end of the lower roller conveying mechanism are both provided with a thrust mechanism, the thrust mechanism comprises a second supporting plate and a plurality of supporting seats arranged on the second supporting plate, and a thrust block rotatably arranged on the supporting seats, limiting grooves are formed in the supporting seats, the thrust block is arranged in the limiting grooves through pin shafts, torsion springs are arranged on the pin shafts, and the torsion springs are used for pulling the thrust block to enable the thrust block to be abutted against the supporting seats.

Go up roller way conveying mechanism and roller way conveying mechanism down and all include two mount pads, many deflector rolls that set up between two mount pads, driving motor to and drive mechanism, driving motor drives all deflector rolls synchronous rotation through drive mechanism.

Drive mechanism is including setting up the torque limiter on the driving motor output, be equipped with friction sprocket on the torque limiter, every the tip of deflector roll is equipped with drive sprocket and driven sprocket, friction sprocket is connected through the drive sprocket transmission on first chain and one of them deflector roll, and driven sprocket on all deflector rolls passes through the second chain transmission and connects.

Two the inboard of mount pad is provided with the gib block, the gib block passes through direction regulating plate and mount pad fixed connection.

The lower roller way conveying mechanism is provided with a sensing device for identifying the type of the tray, and the sensing device comprises a first sensor, a second sensor and a third sensor; the tray is provided with 4 corners, and the positions of the 4 corners are respectively set as a left front part, a right front part, a left rear part and a right rear part; an identification module at a preset setting position is arranged on each type of tray, and the first sensor is used for detecting whether the identification module is arranged on any one of the left rear part and the right rear part; the second sensor is used for detecting whether an identification module is arranged on the left front part of the tray or not; the third inductor is used for detecting whether an identification module is arranged on the right front part of the tray.

And the upper roller way conveying mechanism is provided with a first detection device for sensing whether the workpiece is in place or not.

And a second detection device used for sensing whether a workpiece passes through is arranged on the lower roller way conveying mechanism.

The machine frame comprises an underframe and a connecting beam, the upper roller way conveying mechanism is fixedly connected with the lower roller way conveying mechanism through the connecting beam, and the lower roller way conveying mechanism is arranged at the top of the underframe.

Has the advantages that:

the utility model provides a double-deck roll table conveyor compares current roll table conveyor, has two roll table conveyor that set up from top to bottom, goes up roll table conveyor and lower roll table conveyor mutual independence, and the tray on the pair roll way is carried for overall structure is compact, saves the space of taking up an area of, carries out high-efficient transportation to automobile crankshaft's characteristics.

Drawings

Fig. 1 is a perspective view of the double-layer roller way conveying device provided by the utility model.

Fig. 2 is a top view of the upper roller conveying mechanism in the double-layer roller conveying device provided by the utility model.

Fig. 3 is a top view of the lower roller conveying mechanism in the double-layer roller conveying device provided by the present invention.

Fig. 4 is a left side view of the double-layer roller way conveying device provided by the utility model.

Fig. 5 is a schematic structural view of a blocking mechanism in the double-layer roller way conveying device provided by the present invention.

Fig. 6 is a partially enlarged view of the region L in fig. 1.

Fig. 7 is the schematic structural diagram of the guide roller, the driving motor and the transmission mechanism in the double-layer roller way conveying device provided by the utility model.

Fig. 8 is a top view of the first tray in the double-deck roller way conveying device provided by the present invention, which has a correct posture.

Fig. 9 is a top view of the first tray placed in a reverse direction in the double-layer roller way conveying device provided by the present invention.

Fig. 10 is a top view of the double-deck roller way conveying device provided by the present invention, in which the second tray is placed in a correct posture.

Fig. 11 is a top view of the second tray placed in a reverse direction in the double-layer roller way conveying device provided by the present invention.

Fig. 12 is a perspective view of the tray in the double-deck roller way conveying device provided by the present invention.

Detailed Description

The utility model provides a double-deck roller way conveyor, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the embodiment is lifted to follow with reference to the attached drawing the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1-12, the present invention provides a double-deck roller conveyor, wherein the direction indicated by the arrow represents the conveying direction of the workpiece corresponding to the roller conveyor.

The double-layer roller way conveying device comprises a rack 1, an upper roller way conveying mechanism 2 and a lower roller way conveying mechanism 3, wherein the upper roller way conveying mechanism 2 and the lower roller way conveying mechanism 3 are arranged on the rack, the upper roller way conveying mechanism 2 is located above the lower roller way conveying mechanism 3, the upper roller way conveying mechanism 2 and the lower roller way conveying mechanism 3 are used for conveying trays 8, the workpiece conveying directions of the upper roller way conveying mechanism 2 and the lower roller way conveying mechanism 3 are opposite, the output ends of the upper roller way conveying mechanism 2 and the lower roller way conveying mechanism 3 are respectively provided with a blocking mechanism 4, and the blocking mechanisms 4 are used. In order to facilitate the control of the blocking mechanism, a control module is arranged on the quality inspection line, and the control module is preferably a PLC control system. In practical use, the workpiece conveying directions of the upper roller conveying mechanism 2 and the lower roller conveying mechanism can be the same or opposite.

During operation, the car bent axle finished product is carried on last roller way conveying mechanism 2 through the tray after the quality control is qualified, be provided with the positioning seat 8.5 that bears car bent axle on the tray 8, car bent axle level is placed on positioning seat 8.5, it blocks that tray 8 that carries the certified products continues to carry forward to go up the barrier mechanism 4 on the roller way conveying mechanism 2, when AGV floor truck carries this certified products, barrier mechanism removes and blocks, AGV floor truck carries tray and bent axle to loading department together, and the empty tray that produces after the loading is accomplished can be sent back to lower roller way conveying mechanism 3 by AGV floor truck on, barrier mechanism 4 on the lower roller way conveying mechanism 3 blocks that empty tray continues to carry forward, wait for further classification. It can be seen that the utility model provides a double-deck roll table conveyor has double-line conveying ability (two mutually independent work piece conveying ability), and compact structure saves occupation of land space, carries out high-efficient transportation to automobile crankshaft's characteristics.

Specifically, referring to fig. 5, the blocking mechanism 4 includes a first support plate 41, a driving cylinder 42 vertically disposed upward on the first support plate 41, and a baffle 43 disposed at an end of a piston rod of the driving cylinder. Under the normal working state, the driving air cylinder 42 drives the baffle 43 to extend out, and the baffle 43 blocks the tray 8 to continue to convey forwards; when the control module receives the control signal, the driving air cylinder 42 drives the baffle 43 to reset and remove the blockage, and the tray 8 continues to be transported forwards.

Preferably, referring to fig. 5, the bottom surface of the blocking plate 43 is provided with two guide rods 44, the first support plate is fixedly provided with a sliding sleeve 45 corresponding to the positions of the guide rods 44, and the two guide rods 44 are respectively slidably inserted in the sliding sleeve 45. Through the guide effect of sliding sleeve 45 and guide bar 44, can guarantee that the direction of motion of baffle 43 is correct, can also avoid driving the piston rod of actuating cylinder to receive the shearing force, prevent that the piston rod from warping because of the shearing force.

Preferably, referring to fig. 6, the input ends of the upper roller conveying mechanism 2 and the lower roller conveying mechanism 3 are provided with thrust mechanisms 9, each thrust mechanism 9 includes a second support plate (not visible in the drawing), a plurality of support seats 91 arranged on the second support plate, and a thrust block 92 rotatably arranged on the support seat 91, a limit groove 93 is formed on the support seat 91, the thrust block 92 is arranged in the limit groove 93 through a pin shaft 95, a torsion spring 94 is arranged on the pin shaft, and the torsion spring 94 is used for pulling the thrust block 92 to enable the thrust block 92 to abut against the support seat 91. When the tray 8 is conveyed forwards, the tray 8 overcomes the elastic force of the torsion spring 94 to push the thrust block 92 to swing, so that the bottom surface of the tray 8 presses the thrust block 92, the tray 8 is conveyed forwards smoothly, after the tray 8 passes through the thrust mechanism, the elastic force applied by the torsion spring 94 to the thrust block 92 pulls the thrust block 92, so that the thrust block 92 is pressed against the limiting groove 93, at the moment, the thrust block 92 is in a vertical state, even if the tray 8 pushes the thrust block 92 backwards, the thrust block 92 can be limited to rotate by the support 91, so that the tray 8 is prevented from moving backwards continuously, the tray 8 can only move in one direction, and the tray 8 entering the upper roller conveying mechanism 2 and the lower roller conveying mechanism 3 is prevented from moving backwards and separating from the roller conveying device to cause the crankshaft to fall onto the ground.

Specifically, go up roller table conveying mechanism 2 and lower roller table conveying mechanism 3 and all include two mount pads 50, many deflector rolls 51 that set up between two mount pads, driving motor 52 to and drive mechanism, driving motor 52 passes through all deflector rolls 51 synchronous rotation of drive mechanism drive. Here, the upper roller conveying mechanism and the lower roller conveying mechanism are arranged independently, and guide rollers in the upper roller conveying mechanism are arranged in an equidistant and horizontal manner; similarly, the guide rollers in the lower roller conveying mechanism are also arranged at equal intervals and horizontally.

Preferably, referring to fig. 7, the transmission mechanism includes a torque limiter 53 disposed at an output end of the driving motor 52, the torque limiter is provided with a friction sprocket 54, an end of each of the guide rollers 51 is provided with a driving sprocket (not visible in the drawing) and a driven sprocket 56, the friction sprocket 54 is in transmission connection with the driving sprocket of one of the guide rollers 51 through a first chain 57 (only a part of the chain is shown in the drawing), and the driven sprockets of all the guide rollers are in transmission connection through a second chain 58. The torque limiter 53 comprises a coupling main body, a driving friction plate, a driven friction plate, a disc spring and a locking end cover, wherein the driving friction plate, the driven friction plate, the disc spring and the locking end cover are arranged on the coupling main body, the friction sprocket is arranged between the driving friction plate and the driven friction plate, and the disc spring is used for pressing the driven friction plate to enable the friction sprocket to rotate under the action of friction force provided by the driving friction plate and the driven friction plate. The compression amount of the disc spring can be adjusted by locking the end cover, so that the effect of adjusting the torsion preset value of the torsion limiter is achieved. When the external force received by the guide roller exceeds 75N, the transmission torque of the friction chain wheel 54 and the torque limiter 53 can be instantly increased and exceeds the preset sliding torque value of the torque limiter, so that the friction chain wheel and the torque limiter slip, the guide roller immediately stops moving, and the purpose of protecting the safety of manual operation is achieved.

Preferably, guide strips 61 are arranged on the inner sides of the two mounting seats, and the guide strips 61 are fixedly connected with the mounting seats 50 through guide adjusting plates 62. Tray 8 moves between two guide strips 61, and guide strip 61 guides tray 8 to keep rectilinear movement track, prevents that tray 8 off tracking from influencing the placement accuracy of bent axle. In addition, the distance between the two guide strips can be adjusted by the position of the guide adjusting plate 62, so that the movement guide precision of the tray 8 is improved.

In the embodiment, the quality inspection line can realize the mixed detection of two types of automobile crankshafts (such as a 2.0L engine crankshaft and a 2.5L engine crankshaft), and the shaft lengths of the different types of automobile crankshafts are different, so that the different types of automobile crankshafts need to be loaded by special trays 8, namely, one type of automobile crankshaft corresponds to one tray 8 matched with the automobile crankshaft. The upper roller way conveying mechanism is used for conveying the tray 8 loaded with the workpieces, and the lower roller way conveying mechanism is used for conveying the empty tray 8 (namely, no workpiece is arranged on the tray 8) so that the empty tray 8 is returned to a crankshaft feeding point, wherein the workpiece is an automobile crankshaft; double-deck roller table conveyor sets up in the most low reaches of quality control line, and qualified work piece of quality control transports on last roller table conveying mechanism along with tray 8, waits for AGV floor truck to carry tray 8 and bent axle to loading department. The AGV transports the empty tray 8 back to the lower roller way conveying mechanism.

In order to identify and classify the trays 8, the trays 8 of different types are conveyed to the corresponding buffer mechanisms, the lower roller conveying mechanism is provided with a sensing device 7 for identifying the types of the trays 8, and the sensing device comprises a first sensor 71, a second sensor 72 and a third sensor 73; the tray 8 has 4 corners, as shown in fig. 12, the positions of the 4 corners are respectively set as a left front part 8.1, a right front part 8.2, a left rear part 8.3 and a right rear part 8.4 (the orientation is defined according to the tray 8 when the tray 8 is placed correctly); an identification module 83 at a preset setting position is arranged on each type of tray 8, and the first sensor 71 is used for detecting whether the identification module is arranged on any one of the left rear part and the right rear part; the second sensor 72 is used for detecting whether an identification module is arranged on the left front part of the tray 8; the third sensor 73 is used to detect whether an identification module is provided on the right front portion of the tray 8. For convenience of description, the tray 8 for loading the crankshaft of the 2.0L engine is set as a first tray 81, the tray 8 for loading the crankshaft of the 2.5L engine is set as a second tray 82, the identification module arranged on the first tray 81 is a first identification module 84, the identification module arranged on the second tray 82 is a second identification module 85, and the first identification module 84 and the second identification module 85 are both arranged on the trays in a mode of adopting identification lugs.

In this embodiment: the first identification module 84 is an identification bump provided on the left rear portion 8.3 and the right rear portion 8.4 of the first tray 81, and the second identification module 85 is an identification bump provided on the right rear portion 8.4 and the right front portion 8.2 of the second tray 82. The tray 8 can obtain the following 4 detection results after being detected by the sensor: (1) the first tray 81 is correctly placed: the second sensor 72 and the third sensor 73 can sense the identification bump (i.e. the second sensor 72 and the third sensor 73 have sensing signals output to the control module), and the first sensor 71 cannot sense the identification bump (i.e. the first sensor 71 has no sensing signals output to the control module), as shown in fig. 8; (2) the first tray 81 is placed in a reversed posture: the first sensor 71 can sense the identification bump, and the second sensor 72 and the third sensor 73 cannot sense the identification bump, as shown in fig. 9; (3) the second tray 82 is correctly placed: the first sensor 71 and the second sensor 72 can sense the identification bump, and the third sensor 73 cannot sense the identification bump, as shown in fig. 10; (4) the second tray 82 is placed in a reversed posture: the first and third sensors 71 and 73 can sense the identification protrusion, and the second sensor 72 cannot sense the identification protrusion, as shown in fig. 11.

Preferably, the first sensor 71, the second sensor 72, and the third sensor 73 are all correlation photoelectric sensors, and detection light emitted by the first sensor 71, the second sensor 72, and the third sensor 73 is shown by dotted lines; the opposite type photoelectric sensor comprises a transmitter and a receiver, the detection light emitted by the first sensor 71 is parallel to the extending direction of the guide roller, in order to make the detection result more accurate and prevent other parts from interfering, the detection light emitted by the second sensor 72 and the third sensor 73 are arranged in a crossed manner, but the detection light is not intersected. Through setting up like this, the work of each group inductor mutually noninterfere, each inductor passes through the sensor support setting at the top of mount pad, and overall structure is compact relatively.

In further embodiments, (1) the first identification module 84 is an identification bump provided on the left front portion 8.1 and the right front portion 8.2 of the first tray 81, and the second identification module 85 is an identification bump provided on the right rear portion 8.4 and the right front portion 8.2 of the second tray 82. The tray 8 will get the following 4 kinds of detection results after being detected by the sensor, and the detection results can be deduced according to the above contents, which is not described herein again. (2) The first identification module 84 is an identification bump disposed on the left rear portion 8.3 and the right rear portion 8.4 of the first tray 81, the second identification module 85 is an identification bump disposed on the left rear portion 8.3 and the left front portion 8.1 of the second tray 82, and the tray 8 can obtain following 4 detection results after being detected by the sensor, and the detection results can be inferred according to the above contents, which is not described herein again. (3) The first identification module 84 is an identification projection provided on the left front portion 8.1 and the right front portion 8.2 of the first tray 81, and the second identification module 85 is an identification projection provided on the left rear portion 8.3 and the left front portion 8.1 of the second tray 82. The tray 8 will get the following 4 kinds of detection results after being detected by the sensor, and the detection results can be deduced according to the above contents, which is not described herein again.

Further, in order to avoid that the induction device detects the tray, the tray retreats to influence the detection result, a blocking mechanism 49 is also arranged at the upstream of the blocking mechanism at the output end of the lower roller conveying mechanism, as shown in fig. 3, after the tray is detected and completed by the induction device, the blocking mechanism at the output end of the lower roller conveying mechanism is released from blocking, the tray is smoothly conveyed away, and the blocking mechanism 49 blocks the tray which is not detected by the induction device from being conveyed forwards, so that some trays cannot be classified and detected.

Preferably, as shown in fig. 4, a first detection device 74 for sensing whether the workpiece is in place is arranged on the upper roller conveyor 2. This first detection device can adopt correlation switch or proximity sensor, and when first detection device 74 detected there is the work piece, tray 8 received baffle 41 to block, explains that roller table conveying mechanism has the work piece, waits for AGV travelling bogie transport.

Preferably, as shown in fig. 4, a second detection device 75 for sensing whether a workpiece passes through is arranged on the lower roller way conveying mechanism 3. This second detection device 75 can adopt correlation switch or proximity sensor, and when detection device detected there was the work piece, explain AGV dolly transportation error, carried the tray 8 that has the load work piece rather than carrying empty tray, and control module sends alarm signal, avoids influencing the operation of quality control line.

Preferably, as shown in fig. 1, the machine frame 1 includes an underframe 11 and a connecting beam 12, the upper roller way conveying mechanism 2 is fixedly connected with the lower roller way conveying mechanism 3 through the connecting beam 12, and the lower roller way conveying mechanism 3 is arranged on the top of the underframe 11.

It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.

Claims (10)

1. The double-layer roller way conveying device is characterized by comprising a rack, an upper roller way conveying mechanism and a lower roller way conveying mechanism, wherein the upper roller way conveying mechanism and the lower roller way conveying mechanism are arranged on the rack, the upper roller way conveying mechanism is located above the lower roller way conveying mechanism, the upper roller way conveying mechanism and the lower roller way conveying mechanism are used for conveying trays, the output ends of the upper roller way conveying mechanism and the lower roller way conveying mechanism are respectively provided with a blocking mechanism, and the blocking mechanisms are used for blocking the trays to advance.

2. The double-layer roller way conveying device according to claim 1, wherein the blocking mechanism comprises a first support plate, a driving cylinder vertically and upwards arranged on the first support plate, and a baffle plate arranged at the end part of a piston rod of the driving cylinder.

3. The double-layer roller way conveying device according to claim 1, wherein the input ends of the upper roller way conveying mechanism and the lower roller way conveying mechanism are provided with thrust mechanisms, each thrust mechanism comprises a second support plate, a plurality of supports arranged on the second support plate, and thrust blocks rotatably arranged on the supports, limit grooves are formed in the supports, the thrust blocks are arranged in the limit grooves through pin shafts, torsion springs are arranged on the pin shafts, and the torsion springs are used for pulling the thrust blocks to enable the thrust blocks to be pressed against the supports.

4. The double-layer roller way conveying device according to claim 1, wherein the upper roller way conveying mechanism and the lower roller way conveying mechanism each comprise two mounting seats, a plurality of guide rollers arranged between the two mounting seats, a driving motor and a transmission mechanism, and the driving motor drives all the guide rollers to synchronously rotate through the transmission mechanism.

5. The double-layer roller way conveying device according to claim 4, wherein the transmission mechanism comprises a torque limiter arranged on an output end of the driving motor, a friction sprocket is arranged on the torque limiter, a driving sprocket and a driven sprocket are arranged at an end of each guide roller, the friction sprocket is in transmission connection with the driving sprocket on one of the guide rollers through a first chain, and the driven sprockets on all the guide rollers are in transmission connection through a second chain.

6. The double-layer roller way conveying device according to claim 4, wherein guide strips are arranged on the inner sides of the two mounting seats, and the guide strips are fixedly connected with the mounting seats through guide adjusting plates.

7. The double-layer roller way conveying device according to claim 1, wherein a sensing device for identifying the type of the tray is arranged on the lower roller way conveying mechanism, and the sensing device comprises a first sensor, a second sensor and a third sensor; the tray is provided with 4 corners, and the positions of the 4 corners are respectively set as a left front part, a right front part, a left rear part and a right rear part; an identification module at a preset setting position is arranged on each type of tray, and the first sensor is used for detecting whether the identification module is arranged on any one of the left rear part and the right rear part; the second sensor is used for detecting whether an identification module is arranged on the left front part of the tray or not; the third inductor is used for detecting whether an identification module is arranged on the right front part of the tray.

8. The double-layer roller way conveying device according to claim 1, wherein a first detection device for sensing whether a workpiece is in place is arranged on the upper roller way conveying mechanism.

9. The double-layer roller way conveying device according to claim 1, wherein a second detection device for sensing whether a workpiece passes through is arranged on the lower roller way conveying mechanism.

10. The double-layer roller way conveying device as claimed in claim 1, wherein the machine frame comprises a bottom frame and a connecting beam, the upper roller way conveying mechanism is fixedly connected with the lower roller way conveying mechanism through the connecting beam, and the lower roller way conveying mechanism is arranged on the top of the bottom frame.

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