Conveying device
By designing a conveying device including a movable fixture and a liftable conveying unit, the problem of uneven occupation time during the flow and processing of parts between work stations is solved, and efficient flow and capacity improvement is achieved.
Patent Information
- Application Number
- CN202421438725.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the modern automatic production process, when parts are flowing and processing between stations, some stations occupy a long time, resulting in unbalanced production lines, affecting production efficiency and capacity.
A conveying device including a first conveying line, a second conveying line, a first fixture, a second fixture, a first lifting mechanism, a second lifting mechanism and a third lifting mechanism are designed. The device realizes efficient flow of workpieces between each processing position by erecting movable fixtures above the conveying lines arranged front and rear, and a liftable conveying unit is provided at the front and rear ends of the conveying lines.
The device effectively reduces the conveying length, improves the conveying efficiency, ensures the balanced operation of each station, improves production efficiency and capacity, and is simple in structure and easy to expand.
Smart Images
Figure CN222833591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conveying equipment, in particular to a conveying device used for conveying workpieces. Background Art
[0002] In the modern automatic production and manufacturing process, the components, semi-finished products and finished products that make up the products are often transported through conveyor lines, so that they flow through various processing equipment and workstations to complete the corresponding assembly or testing actions. Among them, for some products with relatively many and complex processes, such as batteries, mobile phones and headphones, the components that make up these products often need to circulate between different workstations and then be assembled accordingly. Therefore, it involves the problem of the circulation and processing of components between various workstations.
[0003] At present, in most automated equipment, when parts on the conveyor line are transported to the required processing station, the lifting device installed at the bottom side of the station pushes the parts away from the conveyor line, and the conveyor line stops conveying the parts at the same time until the relevant processing operations are completed at the station. After that, the lifting device puts the parts back on the conveyor line, and the conveyor line continues to transport them to the next station. In this process, when parts are processed at some time-consuming stations, because the station occupies a long time, other stations on the production line have the problem of too long standby time, which leads to an imbalance in the production line and affects production efficiency and capacity.
[0004] Therefore, a conveying device with simple structure and high conveying efficiency is needed to overcome the above problems. Utility Model Content
[0005] The utility model aims to provide a conveying device with simple structure and high conveying efficiency, so as to effectively realize the efficient flow of parts between various workstations.
[0006] In order to achieve the above-mentioned purpose, the utility model discloses a conveying device, which includes a first conveying line, a second conveying line, a first fixture, a second fixture, a first lifting mechanism, a second lifting mechanism and a third lifting mechanism. The first conveying line and the second conveying line are arranged in a straight line along the front-to-back direction. The first fixture and the second fixture are mounted on the first conveying line and the second conveying line one by one and are movably arranged along the front-to-back direction. The first lifting mechanism and the second lifting mechanism are arranged at the front and rear ends of the first conveying line one by one. The third lifting mechanism is arranged at the front end of the second conveying line. The first lifting mechanism and the second lifting mechanism each have a conveying unit. The third lifting mechanism has an upper conveying unit and a lower conveying unit arranged in parallel and spaced apart along the up-down direction. The first lifting mechanism, the second lifting mechanism and the third lifting mechanism are all arranged to be liftable along the up-down direction.
[0007] Preferably, the conveying unit of the first lifting mechanism has a first position flush with the carrying surface of the first fixture and a second position flush with the conveying surface of the first conveyor line, the conveying unit of the second lifting mechanism has a first position flush with the carrying surface of the second fixture and a second position flush with the conveying surface of the first conveyor line, and the third lifting mechanism has a third position in which the lower conveying unit is flush with the conveying surface of the second conveyor line and the upper conveying unit is flush with the carrying surface of the second fixture and a fourth position in which the upper conveying unit is flush with the conveying surface of the second conveyor line and the lower conveying unit is lower than the conveying surface of the second conveyor line.
[0008] Preferably, the conveying surfaces of the first conveying line and the second conveying line are flush with each other, and the receiving surfaces of the first fixture and the second fixture are flush with each other.
[0009] Preferably, the first fixture includes a transverse linear module mounted on the first conveyor line and a carrier connected to the output end of the transverse linear module. The workpiece to be processed is placed on the carrier, and the carrier performs linear reciprocating motion in the front-to-back direction driven by the transverse linear module.
[0010] Preferably, a fourth lifting mechanism is provided at the rear end of the second conveying line. The fourth lifting mechanism is arranged to be liftable along the up-down direction and has a conveying unit.
[0011] Preferably, the first lifting mechanism also includes a first support seat, a first vertical linear module mounted on the first support seat, and a first bracket connected to the output end of the first vertical linear module. The conveying unit is mounted on the first bracket and moves up and down driven by the first vertical linear module. The conveying unit includes two first vertical plates symmetrically arranged on the left and right opposite sides of the first bracket, two first annular belts correspondingly wound around the two first vertical plates, and a first motor connected to the two first annular belts. The two first annular belts rotate when driven by the first motor to convey the workpieces supported on the two.
[0012] Preferably, the transmission unit also includes a rotating motor and an adapter plate connected to the output end of the rotating motor, the rotating motor is mounted on the bracket, the two vertical plates are symmetrically arranged on the left and right opposite sides of the adapter plate, and the adapter plate rotates under the drive of the rotating motor to drive the two vertical plates to rotate.
[0013] Preferably, the bracket or the adapter plate has a linear guide rail arranged along the left-right direction, and at least one of the vertical plates of the conveying unit is slidably disposed on the linear guide rail.
[0014] Preferably, the third lifting mechanism also includes a second support seat, a second vertical linear module mounted on the second support seat and a second bracket connected to the output end of the second vertical linear module. The upper conveying unit and the lower conveying unit are arranged on the second bracket at intervals in the up and down directions, and move up and down under the drive of the vertical linear module. The upper conveying unit and the lower conveying unit both include two second vertical plates symmetrically arranged on the left and right opposite sides of the second bracket, two second annular belts correspondingly wound around the two second vertical plates and a second motor connected to the two second annular belts, and the two motors drive the two second annular belts connected to them to rotate.
[0015] Preferably, the conveying device further comprises a buffer line, which is arranged along the front-to-rear direction and is located beside the first conveying line and the second conveying line, and is used to receive the workpiece to be processed at the first lifting mechanism and convey the workpiece backward.
[0016] Compared with the prior art, the conveying device disclosed in the utility model is provided with a first fixture and a second fixture which are movably arranged above the first conveying line and the second conveying line which are arranged in the front and rear directions, and a first lifting mechanism and a second lifting mechanism are respectively provided at the front and rear ends of the first conveying line, and a third lifting mechanism is provided at the front end of the second conveying line, and the first lifting mechanism, the second lifting mechanism and the third lifting mechanism are all arranged to be liftable in the up and down directions. After the workpiece to be processed is pulled to the first lifting mechanism, it can be directly sent to the first fixture through the first lifting mechanism, so that it can flow between the processing positions driven by the first fixture to complete the corresponding processing operation. In this process, the newly-flown workpiece to be processed can be lifted downward by the first lifting mechanism. The workpiece is transferred to the second fixture by the action of the first conveyor line's backward transmission, the second lifting mechanism's upward push, and the upper conveying unit of the third lifting mechanism's receiving transmission, so that it circulates between the processing positions driven by the second fixture to complete the corresponding processing operations, and the processed workpiece can be driven by the reverse movement of the first fixture or the second fixture to return to the first lifting mechanism or the third lifting mechanism, so that it can be transferred backward through the two conveyor lines below to discharge the material. The entire conveying device has a simple structure, effectively utilizes space, reduces the conveying length, and improves the conveying efficiency. The setting of the double fixture does not affect the normal conveying operations of the conveyor lines below when processing operations are performed on each fixture, effectively balancing the production line and effectively improving production capacity and conveying efficiency. Of course, additional conveyor lines and fixtures can be added according to actual needs to further improve production capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional diagram of the conveying device of the present utility model.
[0018] Figure 2It is a side view of the conveying device of the present utility model.
[0019] Figure 3 It is a three-dimensional diagram of the single-layer lifting mechanism of the utility model.
[0020] Figure 4 It is a side view of the single-layer lifting mechanism of the utility model.
[0021] Figure 5 It is a three-dimensional diagram of the third lifting mechanism of the utility model.
[0022] Figure 6 It is a side view of the third lifting mechanism of the utility model.
[0023] Figure 7 It is a plan view of the conveying device of the utility model having a cache line. DETAILED DESCRIPTION
[0024] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.
[0025] See also Figures 1 to 7 The utility model provides a conveying device 100 for efficient conveying of workpieces, wherein the workpieces are specifically electronic products and parts thereof such as batteries, mobile phones, tablet computers and headphones, but are not limited thereto. In general, the conveying device 100 provided in the preferred embodiment of the utility model includes a first conveyor line 10, a second conveyor line 20, a first fixture 30, a second fixture 40, a first lifting mechanism 50, a second lifting mechanism 60 and a third lifting mechanism 70. The first conveyor line 10 and the second conveyor line 20 are arranged in a straight line along the front-to-back direction. The first fixture 30 and the second fixture 40 are mounted on the first conveyor line 10 and the second conveyor line 20 in a one-to-one correspondence, and are movably arranged in the front-to-back direction. The first lifting mechanism 50 and the second lifting mechanism 60 are arranged at the front and rear ends of the first conveyor line 10 in a one-to-one correspondence, and the third lifting mechanism 70 is arranged at the front end of the second conveyor line 20. Among them, the first lifting mechanism 50 has a conveying unit 51, the second lifting mechanism 60 has a conveying unit 61, and the third lifting mechanism 70 has an upper conveying unit 71 and a lower conveying unit 72 arranged in parallel and spaced apart along the up and down directions. The first lifting mechanism 50, the second lifting mechanism 60 and the third lifting mechanism 70 are all arranged to be liftable along the up and down directions.
[0026] Specifically, the first lifting mechanism 50 is used to provide the workpiece to be processed to the first fixture 30 or to carry it downward to the first conveyor line 10, and is also used to receive the workpiece processed on the first fixture 30 and to carry the workpiece downward to the first conveyor line 10. The second lifting mechanism 60 is used to receive the workpiece to be processed or the processed workpiece conveyed by the first conveyor line 10, and push the workpiece to be processed upward to the upper conveying unit 71 of the third lifting mechanism 70, and transfer the processed workpiece to the lower conveying unit 72 of the third lifting mechanism 70. The upper conveying unit 71 of the third lifting mechanism 70 provides the workpiece to be processed to the second fixture 40 or receives the workpiece processed on the second fixture 40 and to carry the workpiece downward to the second conveyor line 20, and the second conveyor line 20 is used to convey the processed workpiece backward for unloading.
[0027] Among them, through the lifting action, the conveying unit 51 of the first lifting mechanism 50 has a first position flush with the receiving surface of the first fixture 30 and a second position flush with the conveying surface of the first conveyor line 10. The conveying unit 61 of the second lifting mechanism 60 has a first position flush with the receiving surface of the second fixture 40 and a second position flush with the conveying surface of the first conveyor line 10. The third lifting mechanism 70 has a third position in which the lower conveying unit 72 is flush with the conveying surface of the second conveyor line 20 and the upper conveying unit 71 is flush with the receiving surface of the second fixture 40, and also has a fourth position in which the upper conveying unit 71 is flush with the conveying surface of the second conveyor line 20 and the lower conveying unit 72 is lower than the conveying surface of the second conveyor line 20. Specifically, the conveying surface of the first conveyor line 10 is flush with the conveying surface of the second conveyor line 20, and the receiving surface of the first fixture 30 is flush with the receiving surface of the second fixture 40.
[0028] During operation, when the workpiece to be processed is pulled to the first lifting mechanism 50, the conveying unit 51 provides the workpiece to be processed to the first fixture 30 or receives the workpiece after processing reversely transported by the first fixture 30 at the first position, and in the process of switching from the first position to the second position, the workpiece to be processed or the processed workpiece is carried downward and transmitted backward to the first conveyor line 10; the workpiece to be processed or the processed workpiece is transmitted backward to the conveying unit 61 by the first conveyor line 10. The conveying unit 61 receives the workpiece to be processed or the processed workpiece transmitted by the first conveyor line 10 at the second position, and transmits the processed workpiece backward to the lower conveying unit 72 of the third lifting mechanism 70 in the third position, and the lower conveying unit 72 transmits the processed workpiece backward to the second conveyor line 20, and the second conveyor line 20 transmits the processed workpiece backward to discharge the material. In the process of switching from the second position to the first position, the conveying unit 61 pushes the workpiece to be processed upward and transmits it backward to the upper conveying unit 71 of the third lifting mechanism 70 in the third position. The upper conveying unit 71 in the third position provides the workpiece to be processed to the second fixture 40 or receives the processed workpiece transmitted in reverse by the second fixture 40. In the process of the third lifting mechanism 70 switching from the third position to the fourth position, the upper conveying unit 71 carries the received processed workpiece downward and transmits it backward to the second conveyor line 20, and the second conveyor line 20 transports the processed workpiece backward for unloading.
[0029] See also Figure 1 and Figure 2 Specifically, the first conveyor line 10 and the second conveyor line 20 are belt conveyor lines, roller conveyor lines or chain conveyor lines. In some embodiments, the first conveyor line 10 and the second conveyor line 20 can adopt the same structure, so as to facilitate production and reduce costs accordingly. Among them, taking the first conveyor line 10 as an example, in this embodiment, the first conveyor line 10 adopts a belt conveyor line, which includes two first annular belts 11 arranged in parallel and spaced apart in the left and right directions and a conveying motor 12 driving the two annular belts 11 to rotate, and the rotating two annular belts 11 cooperate with each other to convey the workpieces to be processed or processed on the conveying surfaces of the two. Correspondingly, the second conveyor line 20 includes two annular belts 21 for conveying the processed workpieces and a conveying motor 22 driving the two annular belts 21 to rotate. Among them, the spacing between the two annular belts 11 and the spacing between the two annular belts 21 are both adjustable, so as to adapt to the transmission of workpieces of different specifications.
[0030] See also Figure 1 and Figure 2Specifically, the first fixture 30 and the second fixture 40 both drive the workpieces they carry to move to complete the corresponding processing operations. The specific structures and working principles of the two are basically the same, wherein the processing operations completed on the first fixture 30 and the second fixture 40 are the same, and the number of processing procedures completed on each fixture is 1 or more. Taking the first fixture 30 as an example, the specific structures of the two are described. In this embodiment, the first fixture 30 includes a horizontal linear module 31 mounted on the first conveyor line 10 and a carrier 32 connected to the output end of the horizontal linear module 31. The workpiece to be processed is placed on the carrier 32. The carrier 32 is driven by the horizontal linear module 31 to make a linear reciprocating motion in the front and rear directions, thereby driving the workpiece placed thereon to flow between different stations to complete the corresponding processing operations, and after the processing is completed, the workpiece is brought back to the first lifting mechanism 50. Furthermore, in some embodiments, the first fixture 30 also includes a rotating assembly 33 arranged between the linear module 31 and the carrier 32, and the rotating assembly 33 is used to drive the carrier 32 to rotate a certain angle relative to the linear module 31, so that the carrier 32 can receive the workpiece to be processed or provide the processed workpiece at a horizontal position convenient for receiving and delivering materials, and cooperate with the processing devices of each station at an inclined position convenient for processing, effectively improving the adaptability of the device. Correspondingly, the second fixture 40 includes a horizontal linear module 41 mounted on the second conveyor line 20, a rotating assembly 43 connected to the output end of the horizontal linear module 41, and a carrier 42 connected to the output end of the rotating assembly 43.
[0031] During operation, the first fixture 30 can be connected to the conveying unit 51 at the initial position adjacent to the first lifting mechanism 50 to receive the workpiece to be processed transmitted by the conveying unit 51, and move linearly in the front-back direction to drive the workpiece to be processed to move in the direction away from the first lifting mechanism 50 to complete the corresponding processing operation. After the processing is completed, the first fixture 30 drives the processed workpiece to move in the direction close to the first lifting mechanism 50 to return to the initial position connected to the conveying unit 51, and pushes the processed workpiece to the conveying unit 51 through the pushing member provided on the first fixture 30. In some embodiments, a robot can be added at the opposite ends of the first fixture 30 and the first lifting mechanism 50, and the workpiece to be processed on the first lifting mechanism 50 can be taken and sent to the first fixture 30 or the workpiece processed on the first fixture 30 can be taken and sent to the first lifting mechanism 50. Similarly, the second fixture 40 can also move forward and backward to dock with the upper conveying unit 71 of the third lifting mechanism 70 to receive the workpiece to be processed conveyed by the upper conveying unit 71 or push the processed workpiece onto the upper conveying unit 71, or, through the robot arms arranged at the opposite ends of the second fixture 40 and the third lifting mechanism 70, the workpiece to be processed on the upper conveying unit 71 can be taken and sent to the second fixture 40 or the workpiece processed on the second fixture 40 can be reversely transferred to the upper conveying unit 71.
[0032] See also Figure 3 and Figure 4 Specifically, the specific structures of the first lifting mechanism 50 and the second lifting mechanism 60 are basically the same. The first lifting mechanism 50 is taken as an example to explain the specific structures of the two. Specifically, the first lifting mechanism 50 also includes a first support seat 52, a first vertical linear module 53 installed on the first support seat 52, and a first bracket 54 connected to the output end of the first vertical linear module 53. The transmission unit 51 is installed on the first bracket 54, so that it moves up and down under the drive of the first vertical linear module 53 to achieve switching between the first position and the second position.
[0033] Specifically, the conveying unit 51 includes two first vertical plates 511 symmetrically arranged on the left and right opposite sides of the first bracket 54, two first annular belts 512 correspondingly wound around the two first vertical plates 511, and a first motor 513 connected to the two first annular belts 512. The two first annular belts 512 rotate when driven by the first motor 513 to convey the workpieces supported thereon.
[0034] In order to further improve the adaptability of the conveying device 100 and meet the needs of conveying workpieces of more sizes, in some embodiments, the spacing between the two first annular belts 512 is adjustable. Specifically, the first bracket 54 has a linear guide rail 55 arranged in the left-right direction, and at least one first vertical plate 511 of the conveying unit 51 is slidably disposed on the linear guide rail 55, so that the spacing between the two first vertical plates 511 can be adjusted by adjusting the spacing between the two first vertical plates 511. Specifically, the first vertical plate 511 can be selectively fixed in the corresponding positioning hole on the linear guide rail 55 by manual operation. Of course, the first vertical plate 511 can also be driven by the adjustment motor connected thereto to move on the linear guide rail 55, so as to approach or move away from the other first vertical plate 511, so as to achieve automatic adjustment.
[0035] See also Figure 4In order to further improve the adaptability of the conveying device 100 and meet the needs of conveying workpieces that require angle adjustment, in some embodiments, the conveying unit 51 can also rotate a certain angle relative to the first bracket 54. Specifically, the first lifting mechanism 50 also includes a rotating motor 56 and an adapter plate 57 connected to the output end of the rotating motor 56. The rotating motor 56 is installed on the first bracket 54. The two first vertical plates 511 are symmetrically arranged on the left and right opposite sides of the adapter plate 57. The adapter plate 57 rotates under the drive of the rotating motor 56, driving the two first vertical plates 511 to rotate, thereby rotating the workpieces supported on the two first annular belts 512 by a certain angle. When the incoming direction is different from the receiving direction of the first fixture 30 or the receiving direction of the first conveyor line 10, the angle can be adjusted by the first lifting mechanism 50. Of course, at this time, the linear guide rail 55 used to adjust the spacing between the two first vertical plates 511 can be set on the adapter plate 57, so that both angle adjustment and spacing adjustment can be achieved.
[0036] See also Figure 5 and Figure 6 Specifically, the third lifting mechanism 70 further includes a second support seat 73, a second vertical linear module 74 mounted on the second support seat 73, and a second bracket 75 connected to the output end of the second vertical linear module 74. The upper conveying unit 71 and the lower conveying unit 72 are arranged on the second bracket 75 at intervals in the up-down direction. The upper conveying unit 71 and the lower conveying unit 72 move up and down under the drive of the second vertical linear module 74, thereby realizing the switching between the third position and the fourth position. It should be noted that the specific structures of the upper conveying unit 71 and the lower conveying unit 72 are substantially the same as the specific structure of the conveying unit 51 in the first lifting mechanism 50. Specifically, the upper conveying unit 71 and the lower conveying unit 72 each include two second vertical plates 76 symmetrically arranged on the left and right opposite sides of the second bracket 75, two second annular belts 77 correspondingly arranged around the two second vertical plates 76, and a second motor 78 connected to the two second annular belts 77. The two second motors 78 drive the correspondingly connected two second annular belts 77 to rotate so as to convey the workpiece supported on the second annular belts 77.
[0037] See also Figure 1 , Figure 2 and Figure 7 In order to facilitate the discharging or the detection before discharging, specifically, in some embodiments, a fourth lifting mechanism 80 is provided at the rear end of the second conveyor line 20. The fourth lifting mechanism 80 is arranged to be liftable and used to receive the processed workpieces conveyed by the second conveyor line 20 and push the received workpieces upward for detection and discharging. The structure of the fourth lifting mechanism 80 is the same as that of the first lifting mechanism 50 and the second lifting mechanism 60, and it also has only one conveying unit.
[0038] See also Figure 7 In some embodiments, the conveying device 100 of the utility model further includes a cache line 90, which is arranged along the front-to-back direction and is located beside the first conveyor line 10 and the second conveyor line 20, and is used to receive the workpiece to be processed at the first lifting mechanism 50 and convey the workpiece backward. Therefore, when workpieces are processed on both the first fixture 30 and the second fixture 40 or one of them fails, it plays a temporary storage role for the workpiece to be processed. Alternatively, when the number of main conveyor lines composed of the first conveyor line 10 and the second conveyor line 20 is multiple, the multiple main conveyor lines can be arranged in a straight line or symmetrically with the cache line 90 as the center, and the workpiece to be processed can be transferred to other main conveyor lines through the cache line 90, further improving the production capacity. Among them, the cache line 90 is a belt conveyor line, a roller conveyor line or a chain conveyor line.
[0039] Compared with the prior art, the conveying device 100 disclosed in the utility model is characterized in that a first fixture 30 and a second fixture 40 are respectively set up above the first conveyor line 10 and the second conveyor line 20, and a first lifting mechanism 50 and a second lifting mechanism 60 are respectively set at the front and rear ends of the first conveyor line 10, and a third lifting mechanism 70 is set at the front end of the second conveyor line 10, and the first lifting mechanism 50, the second lifting mechanism 60 and the third lifting mechanism 70 are all arranged to be liftable in the up and down directions. After the workpiece to be processed is pulled to the first lifting mechanism 50, it can be directly sent into the first fixture 30 through the first lifting mechanism 50, so that it can flow between the processing positions driven by the first fixture 30 to complete the corresponding processing operation. In this process, the newly-flown workpiece to be processed can be lifted downward by the first lifting mechanism 50. The workpiece is transferred to the second fixture 40 under the action of the backward transfer of the first conveyor line 10, the upward push of the second lifting mechanism 60 and the receiving transfer of the upper conveying unit 71 of the third lifting mechanism 70, so that it circulates between the processing positions under the drive of the second fixture 40 to complete the corresponding processing operation, and the processed workpiece can be driven by the reverse movement of the first fixture 30 or the second fixture 40 to return to the first lifting mechanism 50 or the third lifting mechanism 70, so that it can be transferred backward through the first conveyor line 10 and the second conveyor line 20 below. The entire conveying device 100 has a simple structure, effectively utilizes space, reduces the conveying length, and effectively improves the conveying efficiency. The setting of the double fixture does not affect the normal conveying operation of the conveyor lines below when performing processing operations on each fixture, effectively balancing the production line and effectively improving the production capacity and conveying efficiency. Of course, according to actual needs, additional conveyor lines and fixtures can be added to further improve production capacity.
[0040] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.
Claims
1. A conveying device, characterized in that: The conveying device includes a first conveying line, a second conveying line, a first jig, a second jig, a first lifting mechanism, a second lifting mechanism and a third lifting mechanism. The first conveying line and the second conveying line are arranged in a straight line along the front-to-back direction. The first jig and the second jig are mounted on the first conveying line and the second conveying line one by one and are movably arranged along the front-to-back direction. The first lifting mechanism and the second lifting mechanism are arranged at the front and rear ends of the first conveying line one by one. The third lifting mechanism is arranged at the front end of the second conveying line. The first lifting mechanism and the second lifting mechanism each have a conveying unit. The third lifting mechanism has an upper conveying unit and a lower conveying unit arranged in parallel and spaced apart along the up-down direction. The first lifting mechanism, the second lifting mechanism and the third lifting mechanism are all arranged to be liftable along the up-down direction.
2. The conveying device according to claim 1, characterized in that The conveying unit of the first lifting mechanism has a first position flush with the carrying surface of the first fixture and a second position flush with the conveying surface of the first conveyor line, the conveying unit of the second lifting mechanism has a first position flush with the carrying surface of the second fixture and a second position flush with the conveying surface of the first conveyor line, the third lifting mechanism has a third position in which the lower conveying unit is flush with the conveying surface of the second conveyor line and the upper conveying unit is flush with the carrying surface of the second fixture and a fourth position in which the upper conveying unit is flush with the conveying surface of the second conveyor line and the lower conveying unit is lower than the conveying surface of the second conveyor line.
3. The conveying device according to claim 1, characterized in that The conveying surfaces of the first conveying line and the second conveying line are flush with each other, and the receiving surfaces of the first fixture and the second fixture are flush with each other.
4. The conveying device according to claim 1, characterized in that The first fixture includes a transverse linear module mounted on the first conveyor line and a carrier connected to the output end of the transverse linear module. The workpiece to be processed is placed on the carrier, and the carrier performs linear reciprocating motion along the front and rear directions driven by the transverse linear module.
5. The conveying device according to claim 1, characterized in that A fourth lifting mechanism is disposed at the rear end of the second conveying line. The fourth lifting mechanism is arranged to be liftable along the up-down direction and has a conveying unit.
6. The conveying device according to claim 1, characterized in that The first lifting mechanism also includes a first support seat, a first vertical linear module installed on the first support seat, and a first bracket connected to the output end of the first vertical linear module. The conveying unit is installed on the first bracket and moves up and down driven by the first vertical linear module. The conveying unit includes two first vertical plates symmetrically arranged on the left and right opposite sides of the first bracket, two first annular belts correspondingly wound around the two first vertical plates, and a first motor connected to the two first annular belts. The two first annular belts rotate under the drive of the first motor to convey the workpieces supported on the two.
7. The conveying device according to claim 6, characterized in that The transmission unit also includes a rotating motor and an adapter plate connected to the output end of the rotating motor. The rotating motor is installed on the bracket. The two vertical plates are symmetrically arranged on the left and right opposite sides of the adapter plate. The adapter plate rotates under the drive of the rotating motor to drive the two vertical plates to rotate.
8. The conveying device according to claim 7, characterized in that The bracket or the adapter plate has a linear guide rail arranged along the left-right direction, and at least one vertical plate of the transmission unit is slidably disposed on the linear guide rail.
9. The conveying device according to claim 1, characterized in that The third lifting mechanism also includes a second supporting seat, a second vertical linear module installed on the second supporting seat and a second bracket connected to the output end of the second vertical linear module. The upper conveying unit and the lower conveying unit are arranged on the second bracket at intervals in the up and down directions, and move up and down under the drive of the vertical linear module. The upper conveying unit and the lower conveying unit both include two second vertical plates symmetrically arranged on the left and right opposite sides of the second bracket, two second annular belts correspondingly wound around the two second vertical plates and a second motor connected to the two second annular belts. The two motors drive the two second annular belts connected to them to rotate.
10. The conveying device according to claim 1, characterized in that The conveying device also includes a buffer line, which is arranged along the front-to-back direction and is located beside the first conveying line and the second conveying line, and is used to receive the workpiece to be processed at the first lifting mechanism and convey the workpiece backward.