A new energy vehicle water cooling plate aluminum column assembly equipment and assembly method

Abstract

The present invention relates to an aluminum column assembly device for a water-cooling plate of a new energy vehicle and an assembly method thereof. The device comprises a conveying streamline for conveying a bottom plate, an upper pushing mechanism for pushing the bottom plate away from the conveying streamline, a discharge mechanism arranged on one side of the conveying streamline, a loading mechanism arranged above the conveying streamline for transferring the workpiece on the discharge mechanism to the bottom plate, and a vacancy detection mechanism arranged on the discharge end of the conveying streamline for detecting the workpiece; two upper pushing mechanisms are provided corresponding to the loading mechanism and the positioning mechanism; the discharge mechanism comprises a vibrating plate, a guide bridge for leading the workpiece in the vibrating plate, and a discharge module arranged at the end of the guide bridge; the workpiece is moved to the discharge module through the guide bridge for even arrangement; the loading mechanism comprises a picking module for picking up the evenly arranged workpieces, and a driving module for driving the picking module to load; this solution can realize fully automated production and processing of aluminum columns from discharge to assembly, thereby greatly improving assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automated production of water-cooling plates, and in particular to an assembly device and an assembly method for aluminum columns of water-cooling plates for new energy vehicles. Background Art

[0002] With the continuous development of new energy vehicles, lithium batteries have become widely used in battery vehicles and plug-in hybrid vehicles. However, the battery life and driving range of lithium batteries are bottleneck issues that need to be overcome in the vigorous promotion of new energy vehicles. In existing technologies, to ensure the normal operation and service life of batteries and battery control boards, battery cooling has gradually shifted from air cooling to water cooling. The cold plate is an indispensable and key component of the battery water cooling system. The structure of the cold plate also varies depending on the overall vehicle layout, but their operating principle is to transfer the heat generated by the battery and control board during operation through contact with the cold plate surface to the coolant inside the cold plate. The coolant is then dissipated through a low-temperature radiator or battery chiller. This cycle repeats to ensure the normal operating environment and service life of the battery and its control board.

[0003] Existing water-cooling plates and boxes for electric vehicle power batteries are generally divided into an upper cover and a lower cover. Thermal conductors and aluminum columns with good thermal conductivity are welded on the bottom surface of the lower cover. The upper cover and the lower cover are supported and connected by the aluminum columns to ensure the firmness of the center position. In the actual processing process, before welding the aluminum columns, they need to be moved from the material tray to the lower cover of the water-cooling plate. At present, the transfer and loading of the aluminum columns are generally achieved by clamping with claws. In order to facilitate the picking up of the robot, workers are required to arrange the aluminum columns neatly on the loading tray first. This method has low production efficiency and requires multiple operators. Therefore, in order to improve production efficiency, we specially propose an assembly equipment and assembly method of aluminum columns for water-cooling plates of new energy vehicles. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide an assembly device and an assembly method for an aluminum column of a water-cooling plate for a new energy vehicle. The assembly device and the assembly method for an aluminum column of a water-cooling plate for a new energy vehicle can well solve the above-mentioned problems.

[0005] In order to achieve the above requirements, the technical solution adopted by the present invention to solve the technical problem is:

[0006] Provided is an aluminum column assembly device for a water-cooling plate of a new energy vehicle, the device comprises a conveying line for conveying a base plate, an upper pushing mechanism for pushing the base plate away from the conveying line, a discharge mechanism arranged on one side of the conveying line, a loading mechanism arranged above the conveying line for transferring the workpiece on the discharge mechanism to the base plate, and an empty position detection mechanism arranged on the discharge end of the conveying line for detecting the workpiece; two upper pushing mechanisms are provided corresponding to the loading mechanism and the conveying line; the discharge mechanism comprises a vibrating plate, a guide bridge for leading the workpiece in the vibrating plate, and a discharge module arranged at the end of the guide bridge; the workpiece is moved to the discharge module through the guide bridge and evenly arranged; the loading mechanism comprises a picking module for picking up the evenly arranged workpieces, and a driving module for driving the picking module to load.

[0007] The new energy vehicle water-cooling plate aluminum column assembly equipment described in the present invention, wherein the discharge module includes a discharge table arranged vertically opposite to the material guide bridge, and the side wall of the discharge table facing the material guide bridge is provided with a receiving groove for accommodating workpieces, and the receiving groove passes through the upper surface of the discharge table. There are multiple receiving grooves and they are evenly distributed in the direction perpendicular to the material guide bridge; the discharge module also includes a discharge drive unit that drives the discharge table to reciprocate along the arrangement direction of the multiple receiving grooves.

[0008] The aluminum column assembly equipment for water-cooling plates of new energy vehicles described in the present invention is characterized in that a workpiece arrangement position is provided on the bottom surface of the accommodating groove, and a negative pressure suction hole connected to a negative pressure source is provided on the side wall of the accommodating groove away from the material guide bridge corresponding to the workpiece arrangement position. The discharge module also includes a vertically arranged positioning block, and a movable hole for horizontal movement of the positioning block is opened on the bottom surface of the accommodating groove in a direction perpendicular to the material guide bridge. The discharge module also includes a reciprocating drive unit for driving the positioning block to move back and forth in the movable hole along its length direction. When assembled in place, the upper end of the positioning block is located in the accommodating groove.

[0009] The new energy vehicle water-cooling plate aluminum column assembly equipment of the present invention comprises a movable plate provided below the discharge table, the positioning block being provided on the movable plate, and a plurality of positioning blocks corresponding to the plurality of accommodating grooves being provided.

[0010] The aluminum column assembly equipment for water-cooling plates of new energy vehicles described in the present invention, wherein the discharge module also includes a mounting plate for mounting the discharge table, the reciprocating drive unit is arranged on the mounting plate, and a first in-position sensor is provided on the mounting plate directly below the workpiece arrangement position, and sensing windows are provided through both the workpiece arrangement position and the movable plate, and the sensing window on the movable plate is long and strip-shaped and parallel to the movable hole.

[0011] The new energy vehicle water-cooling plate aluminum column assembly equipment described in the present invention, wherein the reciprocating drive unit is arranged on the lower surface of the mounting plate, and a movable window is provided on the mounting plate corresponding to the reciprocating drive unit, and the movable terminal of the reciprocating drive unit is connected to the movable plate through the movable window.

[0012] The new energy vehicle water-cooling plate aluminum column assembly equipment described in the present invention, wherein the lifting mechanism includes positioning frames respectively arranged above both sides of the conveying streamline, and a lifting unit arranged below the positioning frames; a fixed position is provided on the positioning frame corresponding to the lifting unit, and when the lifting is in place, the lifting unit fixes the bottom plate on the conveying streamline on the conveying fixed position.

[0013] The aluminum column assembly equipment for water-cooling plates of new energy vehicles described in the present invention, wherein the picking module includes a clamping claw for clamping a workpiece, and a lifting module for driving the clamping claw to lift and lower; the feeding drive module is an XY two-axis lateral movement module; a positioning camera is also provided on the movable terminal of the XY two-axis lateral movement module.

[0014] The aluminum column assembly equipment for water-cooling plates of new energy vehicles described in the present invention, wherein the vacancy detection mechanism includes a positioning arm horizontally arranged above the conveying streamline, a lifting drive unit for driving the positioning arm to lift and lower, and a positioning plate arranged on the positioning arm; a positioning column is longitudinally slidably provided on the positioning plate, a fixed plate is provided above the positioning plate, and a second in-position sensor is provided on the fixed plate above the positioning column, and when the positioning column moves downward and contacts the workpiece and is in position, the upper end of the positioning column triggers the second in-position sensor.

[0015] In addition, a method for assembling an aluminum column of an aluminum column assembly device for a water-cooling plate of a new energy vehicle is provided, the method comprising the following steps:

[0016] The discharging drive unit drives the discharging platform to reset so that its side wall is close to the material guiding bridge;

[0017] The workpiece is transported to the end of the guide bridge through the vibrating plate, and the discharge drive unit drives the discharge table to move horizontally so that the receiving groove is aligned with the guide bridge, so as to move the workpiece into the receiving groove;

[0018] When the first workpiece at the front end of the guide bridge enters the receiving slot, the discharge drive unit operates again and drives the discharge table to continue to move horizontally so that the next receiving slot is aligned with the guide bridge, so that the second workpiece enters the next receiving slot, and the operation is repeated until all receiving slots are filled with workpieces;

[0019] The lifting mechanism lifts the bottom plate on the conveying line away from the conveying line, and the loading mechanism picks up the workpiece in the receiving tank and moves it to the bottom plate above the conveying line;

[0020] The lifting mechanism is reset, and the bottom plate loaded with the workpiece is moved to the empty position detection mechanism through the conveying flow line. The lifting mechanism pushes the bottom plate away from the conveying flow line so that the empty position detection mechanism can detect whether there is material leakage. After the detection is completed, the lifting mechanism is reset.

[0021] The beneficial effect of the present invention is that this solution can realize the fully automated production and processing of aluminum columns from material discharge to assembly. It only needs to replenish materials for the vibration plate regularly, and there is no human participation in the whole process, which greatly improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0023] Figure 1 This is the overall structural diagram of the aluminum column assembly equipment for the water-cooling plate of a new energy vehicle according to the present invention.

[0024] Figure 2 yes Figure 1 A magnified view of the local structure at point A.

[0025] Figure 3 yes Figure 1 Enlarged view of the middle discharge mechanism location.

[0026] Figure 4 yes Figure 3 Magnified image of .

[0027] Figure 5 This is a rear-view measurement of the overall structure of the discharge mechanism of the aluminum column assembly equipment for the water-cooling plate of a new energy vehicle according to the present invention.

[0028] Figure 6 This is a rear-view overall structural diagram of the aluminum column assembly equipment for the water-cooling plate of a new energy vehicle according to the present invention.

[0029] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0030] Figure 8 This is a flow chart of the steps of the aluminum column assembly method of the aluminum column assembly equipment for the water-cooling plate of a new energy vehicle of the present invention. DETAILED DESCRIPTION

[0031] The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] "Multiple" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0034] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or apparatus described in this solution during normal use.

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0036] The preferred embodiment of the present invention is a new energy vehicle water cooling plate aluminum column assembly equipment, such as Figure 1-7As shown, the device includes a conveying line 1 for conveying the bottom plate of the water-cooled plate, an upper push mechanism 2 for pushing the bottom plate away from the conveying line 1, a discharge mechanism 3 arranged on one side of the conveying line 1, a loading mechanism 4 arranged above the conveying line 1 for transferring the workpiece on the discharge mechanism 3 to the bottom plate, and a vacancy detection mechanism 16 arranged on the discharge end of the conveying line for detecting the workpiece; wherein, the conveying line 1 is a double-speed chain, and two upper push mechanisms 2 are provided corresponding to the loading mechanism 4 and the positioning mechanism; the discharge mechanism 3 includes a vibration The vibrating plate 31 comprises a guide bridge 32 for guiding the workpieces out of the vibrating plate 31, and a discharge module 33 at the end of the guide bridge 32; the workpieces are moved to the discharge module through the guide bridge 32 and arranged evenly; the loading mechanism 4 comprises a picking module 41 for picking up the evenly arranged workpieces, and a loading drive module 42 for driving the picking module 41 to load the workpieces; this solution can realize the fully automated production and processing of aluminum columns from discharge to assembly, and only requires regular replenishment of materials for the vibrating plate 31, with no human involvement in the entire process, which greatly improves the assembly efficiency.

[0037] Preferably, the discharge module 33 includes a discharge platform 3a arranged horizontally opposite to the guide bridge 32, the side wall of the discharge platform 3a facing the guide bridge 32 is perpendicular to the guide bridge 32 and the side wall is provided with a receiving groove 5 for accommodating the workpiece 100, the receiving groove 5 is rectangular, so as to facilitate docking with the outlet of the guide bridge 32 to ensure that the workpiece 100 enters the receiving groove 5 smoothly, the receiving groove 5 runs through the upper surface of the discharge platform 3a, and there are multiple receiving grooves 5 and they are evenly distributed in the direction perpendicular to the guide bridge; the discharge module 3 3 also includes a discharge drive unit 3b that drives the discharge table 3a to move back and forth along the arrangement direction of the multiple receiving grooves 5. The discharge table 3a is fixed to the movable terminal of the discharge drive unit through the mounting bracket 15. The discharge drive unit 3b cooperates with the discharge table 3a and realizes that each aluminum column workpiece is loaded into the receiving groove 5 one by one, wherein the longitudinal depth of the receiving groove 5 is less than the height of the workpiece. Furthermore, a workpiece arrangement position 200 is provided on the bottom surface of the receiving groove 5, and the side wall of the receiving groove 5 away from the guide bridge 32 is provided. The upper corresponding workpiece arrangement position 200 is provided with a negative pressure suction hole 6 connected to the negative pressure source, which is used to adsorb the workpiece 100 onto the inner wall of the receiving groove 5 to prevent the workpiece from falling. Furthermore, the discharge module 33 also includes a vertically arranged positioning block 3c, which is long and has an upper surface perpendicular to the guide bridge 32. A movable hole 7 for the horizontal movement of the positioning block 3c is opened on the bottom surface of the receiving groove 5, and the discharge module 33 also includes a reciprocating drive unit 3d for driving the positioning block 3c to move back and forth in the movable hole 7 along its length direction. When assembled in place, the upper end of the positioning block 3c is located in the receiving groove 5, wherein a movable plate 8 is provided under the discharge table 3a, and the positioning block 3c is provided on the movable plate 8. There are multiple positioning blocks 3c corresponding to multiple receiving grooves 5. When the workpiece enters the receiving groove 5, the positioning block 3c is pushed to the position of the negative pressure suction hole 6 to ensure that the spacing between each workpiece is the same, which is convenient for the loading mechanism 4 to pick up, and also prevents the workpiece from accidentally falling and causing the loading mechanism 4 to leak.

[0038] Preferably, the discharge module 33 also includes a mounting plate 3e for installing the discharge table 3a, the mounting plate 3e is fixed on the mounting frame 15, the reciprocating drive unit 3d is arranged on the mounting plate 3e, and a first in-position sensor 9 is provided on the mounting plate 3e directly below the workpiece arrangement position 200. A sensing window 10 is provided on the workpiece arrangement position 200 and the movable plate 8. The sensing window 10 on the movable plate 8 is long and parallel to the movable hole 7, so as to facilitate the detection of whether there is a workpiece in the accommodating groove 5, so as to facilitate the timely replenishment of material through the action of the discharge drive unit after the workpiece is found to have fallen.

[0039] Preferably, the reciprocating drive unit 3d is arranged on the lower surface of the mounting plate 3e, and a movable window e1 is provided on the mounting plate 3e corresponding to the reciprocating drive unit 3d. The movable terminal of the reciprocating drive unit 3d is connected to the movable plate 8 through the movable window e1. This design can provide space for the position installation of the material guide bridge, and also serves to reduce the overall volume, making the structure compact and optimizing the layout.

[0040] Preferably, the lifting mechanism 2 includes a positioning frame 2a respectively arranged above both sides of the conveying streamline 1, and a lifting unit 2b arranged below the positioning frame 2a; a fixed position a1 is provided on the positioning frame 2a corresponding to the lifting unit 2b, and when the lifting is in place, the lifting unit 2b fixes the bottom plate on the conveying streamline 1 on the conveying fixed position a1, wherein the lifting unit 2b is arranged on the frame of the conveying streamline 1.

[0041] Preferably, the picking module 41 includes a clamping jaw 411 for clamping the workpiece, and a lifting module 412 for driving the clamping jaw 411 to rise and fall; the loading drive module 42 is an XY two-axis lateral movement module; a positioning camera 11 is also provided on the movable terminal of the XY two-axis lateral movement module to facilitate the precise positioning of the workpiece.

[0042] Preferably, the vacancy detection mechanism 16 includes a positioning arm 161 horizontally arranged above the conveying streamline 1, a lifting drive unit 162 for driving the positioning arm 51 to rise and fall, and a positioning plate 163 provided on the positioning arm 51; a plurality of positioning columns 12 are longitudinally slidably provided on the positioning plate 163, a fixed plate 13 fixed to the positioning arm 51 is provided above the positioning plate 163, and a second in-position sensor 14 is provided on the fixed plate 13 above the positioning column 12. When the positioning column 12 moves down and contacts the workpiece, the upper end of the positioning column 12 triggers the second in-position sensor 14 to detect whether there is a lack of an aluminum column workpiece in the bottom plate.

[0043] The preferred embodiment of the present invention is a method for assembling an aluminum column of a water-cooling plate aluminum column assembly device for a new energy vehicle, such as Figure 8 As shown, the method includes the following steps:

[0044] Step S10: the discharge drive unit 3b drives the discharge platform 3a to reset so that its side wall is close to the guide bridge 32;

[0045] Step S20: The workpiece is transported to the end of the guide bridge 32 through the vibrating plate, and the discharge drive unit 3b drives the discharge table 3a to move horizontally so that the receiving groove 5 is aligned with the guide bridge 32, so as to move the workpiece into the receiving groove 5;

[0046] Step S30: After the first workpiece at the front end of the guide bridge 32 enters the receiving slot 5, the discharge drive unit 3b is activated again and drives the discharge table 3a to continue to move horizontally so that the next receiving slot 5 is aligned with the guide bridge 32, so that the second workpiece enters the next receiving slot 5. This operation is repeated until all receiving slots 5 are filled with workpieces.

[0047] Step S40: the lifting mechanism 2 lifts the bottom plate on the conveying flow line 1 off the conveying flow line 1, and the loading mechanism 4 picks up the workpiece in the receiving groove 5 and moves it to the bottom plate above the conveying flow line;

[0048] Step S50: the lifting mechanism 2 is reset, and the bottom plate loaded with the workpiece is moved to the empty position detection mechanism 16 through the conveying flow line 1. The lifting mechanism 2 pushes the bottom plate away from the conveying flow line 1 so that the empty position detection mechanism 16 can detect whether there is material leakage. After the detection is completed, the lifting mechanism 2 is reset.

[0049] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A new energy vehicle water cooling plate aluminum column assembly equipment, characterized in that: The equipment includes a conveying line for conveying a bottom plate, a lifting mechanism for lifting the bottom plate off the conveying line, a discharge mechanism provided on one side of the conveying line, a loading mechanism provided above the conveying line for transferring the workpieces on the loading mechanism to the bottom plate, and a vacancy detection mechanism provided at the discharge end of the conveying line for detecting the workpieces; two lifting mechanisms are provided corresponding to the loading mechanism and the conveying line; the discharge mechanism includes a vibrating plate, a guide bridge for guiding the workpieces in the vibrating plate, and a discharge module provided at the end of the guide bridge; The workpieces are moved to the discharge module through the guide bridge and arranged evenly; the loading mechanism includes a picking module for picking up the evenly arranged workpieces and a driving module for driving the picking module to load the workpieces; The discharge module includes a discharge platform arranged horizontally opposite to the material guide bridge, a side wall of the discharge platform facing the material guide bridge being perpendicular to the material guide bridge and provided with a receiving groove for receiving the workpiece, the receiving groove passing through the upper surface of the discharge platform, a plurality of receiving grooves being provided and evenly distributed in a direction perpendicular to the material guide bridge; the discharge module also includes a discharge drive unit for driving the discharge platform to reciprocate along the arrangement direction of the plurality of receiving grooves; A workpiece arrangement position is provided on the bottom surface of the receiving groove, and a negative pressure suction hole connected to a negative pressure source is provided on the side wall of the receiving groove facing away from the material guide bridge, corresponding to the workpiece arrangement position. The discharge module also includes a vertically arranged positioning block, and a movable hole for horizontal movement of the positioning block is opened on the bottom surface of the receiving groove in a direction perpendicular to the material guide bridge. The discharge module also includes a reciprocating drive unit for driving the positioning block to reciprocate along its length direction in the movable hole. When assembled in place, the upper end of the positioning block is located in the receiving groove; The lifting mechanism includes positioning frames respectively arranged above both sides of the conveying streamline, and a lifting unit arranged below the positioning frames; a fixed position is provided on the positioning frame corresponding to the lifting unit, and when the lifting is in place, the lifting unit fixes the bottom plate on the conveying streamline on the conveying fixed position.

2. The new energy vehicle water cooling plate aluminum column assembly equipment according to claim 1 is characterized in that: A movable plate is provided below the discharging table, and the positioning block is provided on the movable plate. A plurality of the positioning blocks are provided corresponding to the plurality of the accommodating grooves.

3. The new energy vehicle water cooling plate aluminum column assembly equipment according to claim 2 is characterized in that: The discharge module also includes a mounting plate for mounting the discharge table, the reciprocating drive unit is arranged on the mounting plate, a first in-position sensor is provided on the mounting plate directly below the workpiece arrangement position, and sensing windows are provided on the workpiece arrangement position and the movable plate, and the sensing window on the movable plate is long and parallel to the movable hole.

4. The new energy vehicle water cooling plate aluminum column assembly equipment according to claim 3 is characterized in that: The reciprocating drive unit is arranged on the lower surface of the mounting plate. A movable window is provided on the mounting plate corresponding to the reciprocating drive unit. The movable terminal of the reciprocating drive unit passes through the movable window and is connected to the movable plate.

5. The new energy vehicle water cooling plate aluminum column assembly equipment according to claim 1 is characterized in that: The picking module includes a clamping claw for clamping the workpiece and a lifting module for driving the clamping claw to rise and fall; the feeding drive module is an XY two-axis lateral movement module; a positioning camera is also provided on the movable terminal of the XY two-axis lateral movement module.

6. The new energy vehicle water cooling plate aluminum column assembly equipment according to claim 1, characterized in that: The empty position detection mechanism includes a positioning arm horizontally arranged above the conveying streamline, a lifting drive unit for driving the positioning arm to rise and fall, and a positioning plate arranged on the positioning arm; a positioning column is provided on the positioning plate for longitudinal sliding, a fixed plate is provided above the positioning plate, and a second in-position sensor is provided on the fixed plate above the positioning column. When the positioning column moves downward and contacts the workpiece and is in position, the upper end of the positioning column triggers the second in-position sensor.

7. A method for assembling an aluminum column of a water-cooling plate aluminum column assembly device for a new energy vehicle, the method comprising assembling an aluminum column of a water-cooling plate aluminum column for a new energy vehicle according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: The discharging drive unit drives the discharging platform to reset so that its side wall is close to the material guiding bridge; The workpiece is transported to the end of the guide bridge through the vibrating plate, and the discharge drive unit drives the discharge table to move horizontally so that the receiving groove is aligned with the guide bridge, so as to move the workpiece into the receiving groove; When the first workpiece at the front end of the guide bridge enters the receiving slot, the discharge drive unit operates again and drives the discharge table to continue to move horizontally so that the next receiving slot is aligned with the guide bridge, so that the second workpiece enters the next receiving slot, and the operation is repeated until all receiving slots are filled with workpieces; The lifting mechanism lifts the bottom plate on the conveying line away from the conveying line, and the loading mechanism picks up the workpiece in the receiving tank and moves it to the bottom plate above the conveying line; The lifting mechanism is reset, and the bottom plate loaded with the workpiece is moved to the empty position detection mechanism through the conveying flow line. The lifting mechanism pushes the bottom plate away from the conveying flow line so that the empty position detection mechanism can detect whether there is material leakage. After the detection is completed, the lifting mechanism is reset.

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