CN220222410U - Production line - Google Patents

Abstract

The utility model discloses a production line. The production line comprises a lower layer conveying device, an upper layer conveying device, a lifting conveying device and a robot; the two lifting conveying devices are respectively positioned at two sides of the lower conveying device, the lifting conveying devices can move between a lifting position and a descending position, the lifting conveying devices positioned at the lifting position can convey the workpiece along the first conveying direction together with the upper conveying device, and the lifting conveying devices positioned at the descending position can convey the workpiece along the second conveying direction together with the lower conveying device; the robot is used for moving the workpiece to or from the lifting conveying device. Therefore, the robot can grasp the workpiece and convey the workpiece to the lifting conveying device, and the workpiece is not required to be conveyed by a forklift, so that the machining efficiency is high; in addition, the upper conveying device, the lower conveying device and the lifting conveying device can move the workpiece to the next station, the workpiece is not required to be carried through a forklift, a bracket is not required to be waited, and the machining efficiency is high.

Description

Production line

Technical Field

The utility model relates to the field of container processing, in particular to a production line.

Background

The processing procedures of the existing container production line for the steel door plate comprise a tower punching procedure, a turnover procedure and a bending procedure.

The workpiece (steel door plate) is punched in a tower punching device (tower punching Kong Gongxu), and the workpiece is manually taken down from the tower punching device and stacked at a preset position; then the stacked workpieces move to a turnover assembly, and the turnover assembly performs turnover operation (turnover procedure) on the workpieces; the turned workpiece is moved to a bending process to perform bending processing. The distance between the position for carrying out the tower punching hole procedure, the position for carrying out the overturning procedure and the position for carrying out bending is large, a forklift is required to carry the workpiece back and forth, and the machining efficiency is low.

To this end, the present utility model provides a production line to at least partially solve the above-mentioned problems.

Disclosure of Invention

In the summary, a series of concepts in simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above technical problems, the present utility model provides a production line, which includes:

a lower layer conveying device;

the upper layer conveying device is arranged above the lower layer conveying device along the vertical direction;

the lifting conveying device is respectively positioned at two sides of the lower conveying device, the lifting conveying device can move between a lifting position aligned with the upper conveying device and a descending position aligned with the lower conveying device, the lifting conveying device positioned at the lifting position can convey the workpiece along a first conveying direction together with the upper conveying device, the lifting conveying device positioned at the descending position can convey the workpiece along a second conveying direction together with the lower conveying device, and the first conveying direction is opposite to the second conveying direction; and

and the robot is positioned on one side of the lifting conveying device, which is far away from the lower conveying device, and is used for moving the workpiece to or from the lifting conveying device.

According to the production line, the robot can grasp the workpiece and convey the workpiece to the lifting conveying device, and the workpiece is not required to be conveyed by a forklift, so that the processing efficiency is high; in addition, the upper layer conveying device, the lower layer conveying device and the lifting conveying device are arranged, so that the workpiece can be moved to the next station without carrying the workpiece by a forklift, and the processing efficiency is high; the workpiece can be moved to the vicinity of the next station by the upper layer conveying device, the bracket for placing the workpiece can be returned to the robot through the lower layer conveying device, the robot does not need to stop working for waiting for the bracket, and the processing efficiency of the production line is high.

Optionally, the first conveying direction is parallel to the first horizontal direction.

Optionally, at least one of the upper layer conveying device, the lower layer conveying device, and the elevating conveying device includes a conveying roller having an axis parallel to a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction.

Optionally, the robot is located at a side of the lifting conveyor remote from the lower conveyor in the first horizontal direction.

Optionally, the production line further comprises a punching device, and the punching device is located on one side of the robot away from the lifting conveying device along the first horizontal direction.

Optionally, the production line further includes a turnover assembly, along a first horizontal direction, the turnover assembly is located between the punching device and the lifting conveying device, the turnover assembly includes a placement inclined plane, the placement inclined plane is inclined to the first horizontal direction, along the first horizontal direction, an upper end of the placement inclined plane is closer to the lifting conveying device relative to a lower end of the placement inclined plane, and the robot turns over the workpiece through the turnover assembly and moves the workpiece to the lifting conveying device.

Alternatively, the lower end of the placement slope protrudes obliquely upward to constitute a blocking protrusion.

Optionally, the production line further comprises a bracket, the bracket is arranged on the lifting conveying device, the upper conveying device and the lower conveying device to circularly and alternately move between the upper conveying device and the lower conveying device, and the bracket is used for bearing the workpiece.

Optionally, the production line further comprises a controller electrically connected to the lifting conveying device, the upper conveying device, the lower conveying device and the robot, so as to control the working of the lifting conveying device, the upper conveying device, the lower conveying device and the robot.

Drawings

In order that the advantages of the utility model will be readily understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the utility model and are not therefore to be considered to be limiting of its scope, the utility model will be described and explained with additional specificity and detail through the use of the accompanying drawings.

FIG. 1 is a schematic top view of a production line according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic perspective view of an upper stage motor, an upper stage rack, and an upper stage conveyor of the production line of FIG. 1;

FIG. 3 is a perspective view of a lower conveyor table motor, lower rack and lower conveyor assembly of the production line of FIG. 1;

FIG. 4 is a schematic perspective view of a lift conveyor of the production line of FIG. 1; and

fig. 5 is a perspective view of a flipping assembly of the production line of fig. 1.

Description of the reference numerals

110: conveying table 111: upper layer conveying table motor

112: upper frame 113: lower layer rack

114: upper layer conveying device 115: lower layer conveying device

116: upper layer conveying roller 117: lower layer conveying roller

118: lower layer conveying stage motor 120: lifting conveying device

121: the lifting frame 122: conveying part

123: lifting roller 124: lifting roller motor

125: first elevating conveyor 126: second lifting conveying device

130: robot 140: turnover assembly

141: roll-over stand 142: turnover part

143: turnover ramp 144: blocking projection

145: flipping diagonal bar 150: punching equipment

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and the like are used herein for purposes of illustration only and not limitation.

Herein, ordinal words such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

The utility model provides a production line. The production line may be used to process door panels (examples of workpieces) of containers. It will be appreciated that the line may also be used to process other parts of a container.

In the process of processing the door panel of the container, the workpiece needs to be punched by the punching device 150; the workpiece processed by the punching apparatus 150 is required to pass through the flipping assembly 140 to be flipped 180 °; and then moved to a bending apparatus to bend the workpiece.

Referring to fig. 1 to 5, the production line includes a conveying table 110. The conveying table 110 is used for conveying workpieces. A plurality of workpieces may be stacked on a subsequent carrier. The carrier is placed on the transfer table 110. In this way, when the carrier is conveyed by the conveying table 110, a plurality of workpieces can be conveyed together.

As shown in fig. 1 to 3, the transfer table 110 includes a transfer frame, an upper transfer device 114, and a lower transfer device 115. The upper conveyor 114 and the lower conveyor 115 are used to carry the carriages. The carriage includes an upper stage 112 and a lower stage 113. The lower rack 113 is fixed to a platform (e.g., the ground) for carrying the production line. The upper and lower shelves 112 and 113 are disposed at intervals in the vertical direction. The upper shelf 112 is located above the lower shelf 113. The upper shelf 112 is stacked on the lower shelf 113. The upper shelf 112 is detachably connected (e.g., by screws) to the lower shelf 113.

The upper rack 112 is provided with an upper conveyor 114. The lower stage 113 is provided with a lower stage conveying device 115. In this way, the upper layer conveying device 114 and the lower layer conveying device 115 are disposed at intervals in the vertical direction. The upper conveyor 114 is located above the lower conveyor 115. Thus, when the work is stacked on the pallet of the first elevating conveyor 125, which is located later, the pallet can be conveyed to the second elevating conveyor 126, which is located later, via the upper conveyor 114. After all the workpieces stacked on the pallet of the second elevating conveyor 126 to be later moved to the next station (folding station), the empty pallet can be returned to the first elevating conveyor 125 to be later via the lower conveyor 115. Thereby, the number of stacked workpieces on the carrier is large.

Referring to fig. 1, the upper conveyor 114 is used for conveying the following carriers in a first conveying direction (right-to-left direction in fig. 1). The lower conveying device 115 is used to convey the following carriage in the second conveying direction (left-to-right direction in fig. 1). The first conveying direction is parallel to the extending direction of the upper conveying device 114. The second conveying direction is parallel to the extending direction of the lower conveying device 115. The extending direction of the upper conveyor 114 is parallel to the extending direction of the lower conveyor 115. The first conveying direction is opposite to the second conveying direction. The first conveying direction and the second conveying direction are both parallel to the horizontal direction. In this way, the upper conveyor 114 and the lower conveyor 115 convey the latter carriage in opposite directions.

As shown in fig. 1 and 4, the production line further includes a lift conveyor 120. The elevating conveyor 120 is provided with a conveyor 122. The elevating conveyor 120 is movably disposed in the vertical direction. Thus, the elevating conveyor 120 is movable between an elevated position and a lowered position. The conveying section 122 of the elevating conveyor 120 located at the raised position is located at the upper conveyor 114. The conveying section 122 of the elevating conveyor 120 located at the lowered position is located at the lower conveyor 115. That is, in the case where the elevating conveyor 120 is located at the elevated position, the upper end of the elevating roller 123 is substantially flush with the upper end of the upper conveying roller 116. When the elevating conveyor 120 is located at the lowered position, the upper end of the elevating roller 123 is substantially flush with the upper end of the lower conveying roller 117.

Specifically, as shown in fig. 4, the elevating conveyor 120 includes an elevating frame 121. The lift frame 121 is movably provided in the vertical direction to enable the lift conveyor 120 to move between a raised position and a lowered position. The conveying section 122 has a structure substantially similar to that of the upper conveying device 114 or the lower conveying device 115. The conveying direction of the conveying portion 122 is parallel to the first conveying direction (i.e., parallel to the second conveying direction). The conveying direction of the conveying portion 122 may be set as needed. In this way, the conveying direction of the conveying section 122 may be the same as the first conveying direction or the second conveying direction. The conveying section 122 is provided to the lifting frame 121. The conveying portion 122 is for carrying a carriage.

The elevating conveyor 120 includes a first elevating conveyor 125 and a second elevating conveyor 126. The first elevating conveyor 125 is located at one side of the conveyor table 110 along the first conveying direction. The first elevating conveyor 125 is located upstream of the conveyor table 110 in the first conveying direction. The conveying direction of the conveying portion 122 (first elevating conveying portion) of the first elevating conveying apparatus 125 is parallel to the first conveying direction. When the first elevating conveyor 125 is moved to the elevated position, the conveying direction of the first elevating conveyor may be the same as the first conveying direction. At this time, the first elevating conveyor and the upper conveyor 114 can move the carriage together in the first conveying direction. When the first elevating conveyor 125 is located at the lowering position, the conveying direction of the first elevating conveyor may be the same as the second conveying direction. At this time, the first elevating conveyor and the lower conveyor 115 can move the carriage together in the second conveying direction.

In the second conveying direction, the second elevating conveyor 126 is located at a side of the conveying table 110 remote from the first elevating conveyor 125. In the second conveying direction, the second elevating conveyor 126 is located upstream of the conveying table 110. The conveying direction of the conveying portion 122 (second elevating conveying portion) of the second elevating conveying apparatus 126 is parallel to the second conveying direction. In this way, when the second elevating conveyor 126 moves to the elevating position, the conveying direction of the second elevating conveyor can be made the same as the first conveying direction. At this time, the second elevating conveyor and the upper conveyor 114 can move the carriage together in the first conveying direction. When the second elevating conveyor 126 is located at the lowered position, the conveying direction of the second elevating conveyor may be the same as the second conveying direction. At this time, the second elevating conveyor and the lower conveyor 115 can move the carriage together in the second conveying direction.

Returning to fig. 1, the production line also includes a robot 130. The robot 130 is used to grasp a workpiece and move the workpiece. The robot 130 is disposed at the first elevating conveyor 125 for stacking the workpieces on the carriers located at the first elevating conveyor.

In the present embodiment, the robot 130 can grasp the workpiece and convey the workpiece to the lift conveyor 120, and the workpiece is not required to be conveyed by a forklift, so that the processing efficiency is high; in addition, the upper layer conveying device 114, the lower layer conveying device 115 and the lifting conveying device 120 can move the workpiece to the next station, and the workpiece is not required to be conveyed by a forklift, so that the processing efficiency is high; the workpiece can be moved to the vicinity of the next station by the upper conveyor 114, the carriage for placing the workpiece can be returned to the robot 130 via the lower conveyor 115, and the robot 130 does not need to stop working for waiting for the carriage, and the processing efficiency of the production line is high (to be described later).

Preferably, the extending directions of the upper layer conveying device 114 and the lower layer conveying device 115 are each parallel to the first horizontal direction D1. In this way, the conveying table 110 serves to convey the carriage in the first horizontal direction D1. The transfer table 110 is simple in structure.

Preferably, referring to fig. 1 to 4, the production line further comprises a conveying roller. The axial direction of the conveying roller is parallel to the second horizontal direction D2. The second horizontal direction D2 is perpendicular to the first horizontal direction D1. The conveying roller is rotatably disposed. The carriage is placed on the conveying roller. In this way, the rotating conveying roller can be used to convey the carrier.

As shown in fig. 1 to 3, the upper layer conveying device 114 includes an upper layer conveying roller 116 (an example of a conveying roller). The upper conveying roller 116 is rotatably provided to the upper frame 112. The lower conveying device 115 includes a lower conveying roller 117 (an example of a conveying roller). The lower conveying roller 117 is rotatably provided to the lower frame 113.

The rotation direction of the upper conveying roller 116 is opposite to the rotation direction of the lower conveying roller 117. Thus, the first conveying direction and the second conveying direction are opposite.

The production line also comprises a conveying table motor arranged on the conveying frame. The conveyance table motor includes an upper conveyance table motor 111 and a lower conveyance table motor 118. The upper conveying table motor 111 is connected to the upper conveying roller 116 for driving the upper conveying roller 116 to rotate. The lower conveying stage motor 118 is connected to the lower conveying roller 117 for driving the lower conveying roller 117 to rotate. Wherein a transmission mechanism (e.g., a gear transmission mechanism, a sprocket and chain transmission mechanism, or a pulley and belt transmission mechanism) is provided between the plurality of upper conveying rollers 116 for transmitting torque. A transmission mechanism (such as a gear transmission mechanism, a sprocket and chain transmission mechanism, or a pulley and belt transmission mechanism) is provided between the plurality of lower conveying rollers 117 for transmitting torque.

It is to be understood that in an embodiment not shown, the conveying table motor for driving the upper conveying roller to rotate and the conveying table motor for driving the lower conveying roller to rotate may be the same motor. At this time, a transmission mechanism (e.g., a gear transmission mechanism, a sprocket and chain transmission mechanism, or a pulley and belt transmission mechanism) is provided between the upper conveyor and the lower conveyor for transmitting torque between the upper conveyor and the lower conveyor.

It will be appreciated that in embodiments not shown, the upper and lower conveyor may also be configured as conveyor belts.

As shown in fig. 4, the conveying section 122 includes a lifting roller 123 (an example of a conveying roller). The lifting roller 123 is rotatably provided to the lifting frame 121. Thus, the elevating conveyor 120 has a simple structure. The production line further includes a lift roller motor 124 provided to the lift frame 121. The lifting roller motor 124 is connected to the lifting roller 123 for driving the lifting roller 123 to rotate.

The production line also comprises a lifting driving assembly. The lift drive assembly may be a lift platform (e.g., a scissor lift platform of the prior art). The lifting driving assembly is fixedly arranged on a platform for bearing the production line. The elevation driving assembly is connected to the elevation conveyor 120 for driving the elevation conveyor 120 to move in a vertical direction.

Preferably, as shown in fig. 1, the robot 130 is located at a side of the first elevating conveyor 125 remote from the second elevating conveyor 126 in the first horizontal direction D1. Thus, the structure of the production line is simple.

Returning to fig. 1, the production line also includes a punching apparatus 150. The punching apparatus 150 may be a prior art tower punching machine. The punching apparatus 150 is used to punch a workpiece. In the first horizontal direction D1, the punching apparatus 150 is located at a side of the robot 130 remote from the first elevating conveyor 125. The punching apparatus 150, the first elevating conveyor 125, the conveyor table 110, and the second elevating conveyor 126 are disposed in this order substantially along a straight line parallel to the first horizontal direction D1. Thus, the structure of the production line is simple.

As shown in fig. 1 and 5, the production line further includes a flipping assembly 140. The flipping assembly 140 includes a flipping frame 141 and a flipping portion 142. The roll-over stand 141 is fixedly provided to a platform for carrying the production line. The flipping portion 142 is located above the flipping frame 141. The flipping portion 142 is detachably connected (e.g., by bolting) to the flipping frame 141. Thus, the roll-over stand 141 supports the roll-over part 142. In the first horizontal direction D1, the flipping assembly 140 is located between the first elevating conveyor 125 and the punching apparatus 150. The punching apparatus 150, the flipping assembly 140, the first elevating conveyor 125, the conveyor table 110, and the second elevating conveyor 126 are disposed in this order substantially along a straight line parallel to the first horizontal direction D1. Thus, the structure of the production line is simple.

With continued reference to fig. 1 and 5, the flipping portion 142 is provided with a flipping ramp 143. The flip slope 143 is inclined to the first horizontal direction D1. The upper end of the inversion slope 143 is closer to the first elevating conveyor 125 than the lower end of the inversion slope 143 in the first horizontal direction D1.

The robot 130 flips the workpiece via the flipper assembly 140 and moves the workpiece to the lift conveyor 120. Specifically, as shown in fig. 1 and 5, the workpiece includes a first face (front face) and a second face (aspect). With the workpiece placed in the punching apparatus 150, the first face is directed upward. The suction cup of the robot 130 sucks the first face of the workpiece located at the punching apparatus 150, and then moves and places the workpiece on the turnover slope 143. At this time, the second face of the workpiece is overlapped to the inversion slope 143. The robot 130 releases the suction of the suction cup to the first surface of the workpiece, and then the suction cup moves to the second surface of the workpiece and sucks the second surface of the workpiece; the robot 130 moves the workpiece to the first elevating conveyor 125, and places the workpiece on the conveyor 122 of the first elevating conveyor 125. At this point, the first face of the workpiece faces downward. During this process, the workpiece is flipped 180 °.

Preferably, as shown in fig. 5, the lower end of the flip slope 143 extends obliquely upward to form a blocking protrusion 144. The extending direction of the blocking protrusion 144 is perpendicular to the inversion slope 143. In the case where the work is overlapped to the flip slope 143, the lower end of the work is overlapped to the blocking protrusion 144. Thereby, the work can be stably overlapped to the flip slope 143.

Preferably, the flipping portion 142 includes a flipping ramp 145. The plurality of flipping diagonal bars 145 are disposed at intervals along the second horizontal direction D2. The flip lever 145 has a flip slope 143 and a blocking protrusion 144. Thus, the flipping assembly 140 is simple in structure.

The production line also includes a carrier (not shown). The carriers are disposed on the upper conveyor 114, the lower conveyor 115, and the elevating conveyor 120. The carriers are cyclically and alternately moved between the upper conveyor 114 and the lower conveyor 115 (which will be described in detail later). Therefore, the workpiece is convenient to transport, and the working efficiency is improved.

Preferably, the production line further comprises a controller. The controller is electrically connected to the punching apparatus 150, the robot 130, the elevation driving assembly, the conveying table motor and the elevation roller motor 124 for controlling the operation of the punching apparatus 150, the robot 130, the elevation driving assembly, the conveying table motor and the elevation roller motor 124. Automatic work of the production line is realized, and the processing efficiency of the production line is improved.

The working steps of the production line comprise:

step 1, the workpiece subjected to plate shearing and blanking is moved to the punching equipment 150 so as to finish punching processing in the punching equipment 150. Step 2 is performed after step 1.

Step 2, the robot 130 grabs the workpiece processed by the punching device 150; the robot 130 turns over the workpiece via the turning over assembly 140 and moves the workpiece to the carriage at the first elevating conveyor; at this time, the first elevating conveyor 125 is located at the lowered position. The second elevating conveyor 126 is located at the lowered position. The robot 130 performs step 2 a plurality of times to stack a plurality of workpieces on the carrier at the first elevation transport section. Step 2 is followed by step 3.

Step 3, the first elevating conveyor 125 is moved to the raised position, and the second elevating conveyor 126 is moved to the raised position. Step 3 is followed by step 4.

Step 4, the first elevating conveyor, the upper conveyor 114 and the second elevating conveyor are operated to move the carriage located at the first elevating conveyor to the upper conveyor 114, and then to the second elevating conveyor via the upper conveyor 114. After the carriage is moved to the second elevation transport section, the workpiece can be removed piece by an actuator of the next station (bending station) (e.g., a robot located on a side of the second elevation transport device 126 away from the transport table 110). Step 4 is followed by step 5.

In step 5, when all the workpieces to be placed on the carriers of the second elevating conveyor are removed (moved to the next station), the first elevating conveyor 125 may be moved to the lowered position, and the second elevating conveyor 126 may be moved to the lowered position. Step 5 is followed by step 6.

Step 6, the first elevating conveyor, the lower conveyor 115 and the second elevating conveyor are operated to move the carriage located at the second elevating conveyor to the lower conveyor 115, and then to the first elevating conveyor via the lower conveyor 115. At this time, the carrier can be used to re-stack the workpieces.

During processing of workpieces in the production line, the carriages are cyclically and alternately moved between the upper conveyor 114 and the lower conveyor 115. Specifically, the carriage is moved to the upper conveyor 114 by the first elevating conveyor; then, the upper conveyor 114 moves to the second elevating conveyor; then, the second elevation transport unit moves to the lower transport device 115; then, the lower conveyor 115 moves to the first elevating conveyor; and then again moved by the first elevating conveyor to the upper conveyor 114 to start a new round of circulation. That is, during the operation of the production line, the carriage is circulated among the upper conveyor 114, the first elevating conveyor 115, and the second elevating conveyor in this order.

The number of brackets may be set as desired. In this way, the punching device 150 and the robot 130 can continue to operate during the process of taking the plurality of workpieces located on the second elevating conveyor 126 to the next station, without stopping the operation for waiting for the bracket, and the processing efficiency of the production line is high.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

Claims (9)

1. A production line, characterized in that it comprises:

a lower layer conveying device;

the upper layer conveying device is arranged above the lower layer conveying device along the vertical direction;

lifting and transporting devices, two lifting and transporting devices are respectively located at two sides of the lower layer transporting device, the lifting and transporting devices can move between a lifting position aligned with the upper layer transporting device and a descending position aligned with the lower layer transporting device, the lifting and transporting devices located at the lifting position can transport workpieces along a first transporting direction together with the upper layer transporting device, and the lifting and transporting devices located at the descending position can transport workpieces along a second transporting direction together with the lower layer transporting device, and the first transporting direction and the second transporting direction are opposite; and

and the robot is positioned at one side of the lifting conveying device, which is far away from the lower conveying device, and is used for moving the workpiece to or from the lifting conveying device.

2. The production line of claim 1, wherein the first conveying direction is parallel to a first horizontal direction.

3. The production line of claim 2, wherein at least one of the upper conveyor, the lower conveyor, and the lift conveyor includes a conveyor roller having an axis parallel to a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction.

4. The production line of claim 2, wherein the robot is located on a side of the elevating conveyor remote from the lower conveyor in the first horizontal direction.

5. The production line of claim 4, further comprising a punching apparatus located on a side of the robot remote from the elevating conveyor in the first horizontal direction.

6. The production line of claim 5, further comprising a turnover assembly located between the punching apparatus and the elevation transport means in the first horizontal direction, the turnover assembly including a placement bevel inclined to the first horizontal direction, an upper end of the placement bevel being closer to the elevation transport means than a lower end of the placement bevel in the first horizontal direction, the robot turnover a workpiece via the turnover assembly and moving the workpiece to the elevation transport means.

7. The production line of claim 6, wherein a lower end of the placement slope protrudes obliquely upward to form a blocking protrusion.

8. The production line of claim 1, further comprising a carriage that carries the lift conveyor, the upper conveyor, and the lower conveyor for cyclical alternating movement between the upper conveyor and the lower conveyor, the carriage for carrying a workpiece.

9. The production line of claim 1, further comprising a controller electrically connected to the lift conveyor, the upper conveyor, the lower conveyor, and the robot for controlling operation of the lift conveyor, the upper conveyor, the lower conveyor, and the robot.