Assembling machine

Abstract

The utility model discloses an assembling machine, relates to the technical field of mobile phone lens motor assembling equipment, solves the problem of low assembling production efficiency, and comprises a first conveying line, a first feeding mechanism, a second conveying line, a second feeding mechanism, a first grabbing mechanism, a second grabbing mechanism and a positioning mechanism. The first feeding mechanism comprises a first stacking frame, a first lifting assembly and a first lifting assembly. The second feeding mechanism comprises a second stacking frame, a second lifting assembly and a second lifting assembly. The first grabbing mechanism is used for grabbing a second workpiece from a second material disc on the material taking station and placing the second workpiece into the positioning mechanism. The second grabbing mechanism is used for grabbing the second workpiece from the positioning mechanism and placing the second workpiece in the first material disc on the assembling station for assembling. Automatic assembling can be achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone lens motor assembly equipment. Background Art

[0002] At present, with the development of portable smart devices, their functions are becoming more and more powerful. Users can use mobile phones, tablets, etc. to take photos and selfies at any time without the need for professional photographers or expensive and bulky photographic equipment. You can also use the camera built into your laptop for remote video and remote conferencing, etc., without the need to purchase additional cameras. However, users have higher and higher requirements for the portability of smart devices. The traditional method of manual assembly is difficult to adapt to the small, light and thin characteristics of lens motors, which brings difficulties to the installation of lens motors. At the same time, the output of portable smart devices is also increasing, requiring manufacturers to significantly improve production efficiency. Therefore, manufacturers are also constantly updating and improving their production equipment. Utility Model Content

[0003] Therefore, the utility model provides an assembly machine to solve the above problems.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] An assembly machine for assembling a mobile phone lens motor assembly, characterized in that the assembly machine comprises a first conveying line, a first feeding mechanism, a second conveying line, a second feeding mechanism, a first grabbing mechanism, a second grabbing mechanism, and a positioning mechanism;

[0006] The first feeding mechanism includes a first material stacking rack, a first lifting assembly, and a first lifting assembly; the first material stacking rack is arranged across the first conveyor line, and the first material tray containing the first workpiece is stacked in the first material stacking rack; the first lifting assembly can support and lift all the first material trays stacked in the first material stacking rack; the first lifting assembly is located under the first material stacking rack, and is used to support the first material tray and can drive the first material tray to rise and fall;

[0007] The second feeding mechanism includes a second material stacking rack, a second lifting assembly, and a second lifting assembly; the second material stacking rack is arranged across the second conveyor line, and the second material stacking rack is used for stacking second material trays with second workpieces therein; the second lifting assembly can support and lift all the second material trays stacked in the second material stacking rack; the second lifting assembly is located under the second material stacking rack, and is used for supporting the first material tray and driving the first material tray to rise and fall;

[0008] An assembly station is provided on the first conveyor line, and a material picking station is provided on the second conveyor line; the positioning mechanism is provided between the first conveyor line and the second conveyor line; the first grabbing mechanism is used to grab the second workpiece from the second material tray on the material picking station and place it into the positioning mechanism; the positioning mechanism is used to position the second workpiece, and the second grabbing mechanism is used to grab the second workpiece from the positioning mechanism and place it into the first material tray on the assembly station for assembly.

[0009] Optionally, the positioning mechanism includes a positioning platform, a fixed groove body, a fixed baffle wall, a first movable baffle wall, a second movable baffle wall, a first driving unit and a second driving unit; the fixed groove body is arranged on the fixed platform; the fixed baffle wall, the first movable baffle wall and the second movable baffle wall are all located in the fixed groove body, and can be enclosed by a side wall of the fixed groove body to form a rectangle to clamp a second workpiece placed in the fixed groove body; the first driving unit can drive the first movable baffle wall to move closer to or away from the fixed baffle wall, and the second driving unit can drive the second movable baffle wall to move closer to or away from a side wall of the fixed groove body.

[0010] Optionally, at least two fixed blocking walls, first movable blocking walls and second movable blocking walls are evenly spaced and arranged on the fixed slot body, and the number of the fixed blocking walls, the first movable blocking walls and the second movable blocking walls corresponds one to one to the number of the fixed slot bodies.

[0011] Optionally, a fixed baffle, a first movable plate and a second movable plate are provided on the fixed platform; the fixed baffle wall is evenly spaced and connected to the fixed baffle, and the fixed baffle is fixedly installed on the fixed platform; the first movable baffle wall is evenly spaced and connected to the first movable baffle, and the first driving unit drives and connects the first movable baffle to drive the first movable baffle to move closer to or away from the fixed baffle; the second movable baffle wall is evenly spaced and connected to the second movable baffle, and the second driving unit drives and connects the second movable baffle to drive the second movable baffle to move closer to or away from a side wall of the positioning slot body.

[0012] Optionally, the first lifting assembly includes two groups of first lifting plates and two groups of first driving members, and the first driving members correspond to the first lifting plates one by one; the two first driving members are symmetrically arranged on both sides of the first stacking rack, and are used to drive the two first lifting plates to move closer to or away from each other; the first lifting plate is provided with a first plug-in portion that can be inserted into the bottom of the first material tray to lift the stacked first material tray.

[0013] Optionally, the first lifting assembly includes a first lifting plate and a first lifting member, and the first lifting member drives the first lifting plate to lift.

[0014] Optionally, an auxiliary lifting plate and an auxiliary limiting wheel are sequentially arranged at the assembly station along the conveying direction of the first conveyor line. The auxiliary lifting plate and the auxiliary limiting wheel can be raised and lowered. The auxiliary lifting plate is used to support the first material tray to separate it from the first conveyor line, and the auxiliary limiting wheel can prevent the first material tray from moving along the first conveying direction.

[0015] Optionally, it also includes a storage mechanism, which is arranged across the second conveyor line; the storage mechanism has the same structure as the second unloading mechanism and is used to stack empty second material trays.

[0016] Optionally, one side of the second material stacking rack is provided with an openable sealing plate, and the second material stacking rack is connected to a feeding channel on the side with the sealing plate for pushing the second material tray.

[0017] Optionally, it also includes a machine body, the first conveying line is installed on the machine body, the first conveying line includes a first conveying component, a transition conveying component and a second conveying component; the first conveying component is arranged perpendicular to the conveying direction of the second conveying component, and the conveying surface of the second conveying component is lower than the first conveying component; the transition conveying component is arranged at the end of the second conveying component close to the first conveying component,

[0018] The machine body is provided with a transition lifting member for driving the transition conveying assembly to rise and fall, for driving the transition conveying assembly to rise to connect with the first material tray conveyed to the end of the first conveying assembly, and for driving the transition conveying assembly to descend and be placed on the second conveying line.

[0019] The technical solution provided by the utility model has the following beneficial effects:

[0020] It has the following beneficial effects:

[0021] 1. Through the first feeding mechanism and the second feeding mechanism, the first material tray and the second material tray can be automatically unloaded, and the second workpiece can be placed in the positioning mechanism through the first grasping mechanism to achieve accurate positioning, and after the second workpiece is grasped by the second grasping mechanism, it can be accurately placed in the first material tray on the assembly station, and the second workpiece is pressed down and clamped into the first workpiece to achieve the assembly of the two; in this way, highly automated assembly can be achieved, production efficiency can be improved, and defective products generated during the assembly process can be reduced;

[0022] 2. There are multiple positioning grooves, and the first gripper and the second gripper are provided with corresponding numbers, so that multiple second workpieces can be positioned at one time and assembled at the same time, which can greatly improve work efficiency;

[0023] 3. A storage mechanism is provided to automatically stack the unloaded second trays on the second conveyor line to improve work efficiency;

[0024] 4. The first conveyor line includes a first conveyor assembly, a transition conveyor assembly and a second conveyor assembly. The first conveyor assembly and the second conveyor assembly are perpendicular to each other, which can reasonably utilize the limited space in the machine body, thereby saving the overall equipment space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0026] Figure 2 is a schematic diagram of the first material tray, the first conveyor line and the first feeding mechanism in this embodiment;

[0027] Figure 3 is a schematic diagram of the first conveying line and the first feeding mechanism in this embodiment;

[0028] Figure 4 is a schematic diagram showing the first material stacking rack and the first lifting plate in this embodiment;

[0029] Figure 5 Schematic diagram of the first conveyor line, the auxiliary lifting plate, the auxiliary limiting wheel and the first material tray in this embodiment;

[0030] Figure 6 is an overall schematic diagram of the first conveyor line in this embodiment;

[0031] Figure 7 is a schematic diagram of the second conveying line, the second feeding mechanism and the storage mechanism in this embodiment;

[0032] Figure 8 is a schematic diagram showing the second material stacking rack and the second lifting plate in this embodiment;

[0033] Fig. 9 is a schematic diagram of the first grasping mechanism and the second grasping mechanism in this embodiment;

[0034] Fig.10 Schematic diagram of the positioning mechanism in this embodiment.

[0035] Explanation of the reference numerals: 1. first material tray; 2. second material tray; 3. first conveyor line; 4. first feeding mechanism; 5. second conveyor line; 6. second feeding mechanism; 7. first grabbing mechanism; 8. second grabbing mechanism; 9. positioning mechanism; 10. storage mechanism; 11. machine body; 12. first material stacking rack; 13. first lifting plate; 14. first lifting plate; 15. first plug-in part; 16. auxiliary lifting tray; 17. auxiliary limiting wheel; 18. second material stacking rack; 19. second lifting plate; 20. first Two lifting plates; 21. Closing plate; 22. Feeding channel; 23. First moving member; 24. First gripper; 25. Second moving member; 26. Second gripper; 27. Positioning platform; 28. Fixed trough; 29. ​​Fixed baffle; 30. First moving baffle; 31. Second moving baffle; 32. Fixed baffle; 33. First moving plate; 34. Second moving plate; 35. First driving unit; 36. Second driving unit; 37. First conveying assembly; 38. Transition conveying assembly; 39. Second conveying assembly. DETAILED DESCRIPTION

[0036] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0037] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0038] Reference Figure 1 An assembly machine is used to assemble a mobile phone lens motor assembly, the lens motor assembly comprising a first workpiece and a second workpiece, wherein the first workpiece is arranged in a first material tray 1, and the second workpiece is arranged in a second material tray 2. The assembly machine comprises a first conveyor line 3, a first feeding mechanism 4, a second conveyor line 5, a second feeding mechanism 6, a first gripping mechanism 7, a second gripping mechanism 8, a positioning mechanism 9, a storage mechanism 10 and a body 11, each mechanism is mounted on the body 11, and each mechanism is controlled to work by an integrated controller.

[0039] Reference Figure 2-4, the first feeding mechanism 4 includes a first material stacking rack 12, a first lifting assembly, and a first lifting assembly. The first material stacking rack 12 is arranged across the first conveyor line 3. The first material trays 1 are stacked in the first material stacking rack 12. The first lifting assembly can support and lift all the first material trays 1 stacked in the first material stacking rack 12. In this embodiment, the first lifting assembly includes two groups of first lifting plates 14 and two groups of first driving members, and the first driving members correspond to the first lifting plates 14 one by one. The two first driving members are symmetrically arranged on both sides of the first material stacking rack 12, and are used to drive the two first lifting plates 14 to move closer to or away from each other. The first lifting plate 14 is provided with a first plug-in portion 15. An empty slot is provided at the bottom of the first material tray 1, so that the first plug-in portion 15 can be inserted into the bottom of the first material tray 1, thereby lifting the first material tray 1. The first lifting assembly includes a first lifting plate 13 and a first lifting member; the first lifting member is installed on the body 11 and is located below the first material stacking rack 12, and is used to drive the first lifting plate 13 to perform lifting actions. Wherein, the first driving member and the first lifting member can both be cylinders.

[0040] When the first material trays 1 are stacked in the first material rack 12, the first lifting plate 13 rises and abuts against the lower end surface of the stacked first material trays 1 during unloading; the two first lifting plates 14 release the first material trays 1, so that all the stacked first material trays 1 are supported by the first lifting plates 13; then, the first lifting plates 13 descend a height, and a height is the thickness of a first material tray 1. At this time, the two first lifting plates 14 approach each other under the action of the first driving member, and the first plug-in portion 15 on the first lifting plate 14 is inserted into the empty groove at the bottom of the second to last first material tray 1. Except for the first material tray 1 at the bottom layer, all the first material trays 1 are supported by the two first lifting plates 14; then, the first lifting plate 13 continues to descend, so that the edge of a first material tray 1 located on the first lifting plate is placed on the first conveyor line 3 and transported out by the first conveyor line 3. In this way, unloading of a first material tray 1 is completed.

[0041] Reference Figure 5 , an assembly station is provided on the first conveyor line 3. When the first material tray 1 is conveyed to the assembly station, the first material tray 1 stays in the assembly station, and the first workpiece in the first material tray 1 waits to be assembled with the second workpiece. The machine body 11 is provided with an auxiliary lifting plate 16 and an auxiliary limiting wheel 17 in sequence along the conveying direction of the first conveyor line 3 at the assembly station. The auxiliary lifting plate 16 and the auxiliary lifting wheel are each driven by an independent cylinder to realize the lifting action. When the first material tray 1 needs to stay at the assembly station, the auxiliary lifting wheel is first raised to limit the first material tray 1 from continuing to move along the first conveyor line 3, and the auxiliary lifting plate 16 is raised again to lift the first material tray 1 and stop it on the auxiliary lifting plate 16, waiting for subsequent assembly.

[0042] Reference Figure 6, further, it is limited by the space size of the machine body 11. The first conveyor line 3 includes a first conveyor assembly 37, a transition conveyor assembly 38 and a second conveyor assembly 39. The assembly station is arranged on the second conveyor assembly 39. The first conveyor assembly 37 is arranged perpendicular to the conveying direction of the second conveyor assembly 39, the conveying surface of the second conveyor assembly 39 is lower than the first conveyor assembly 37, and the transition conveyor assembly 38 is arranged at the end of the second conveyor assembly 39 close to the first conveyor assembly 37. A transition lifting member for driving the transition conveyor assembly 38 to rise and fall is arranged on the machine body 11, and the transition lifting can adopt a cylinder structure. The transition lifting member can drive the entire transition conveyor assembly 38 to rise or fall. When the transition conveyor assembly 38 receives the first material tray 1, the entire transition conveyor assembly 38 rises to the same height as the first conveyor assembly 37, and the transition conveyor assembly 38 operates at the same time; the first material tray 1 can be smoothly transferred from the first conveyor assembly 37 to the transition conveyor assembly 38; then the transition conveyor assembly 38 stops rotating, and the transition conveyor assembly 38 descends, placing the edge of the first material tray 1 on the second conveyor assembly 39, and is transported away by the second conveyor assembly 39.

[0043] Reference Figure 7 and Figure 8 The second feeding mechanism 6 includes a second stacking rack 18, a second lifting assembly, and a second lifting assembly. The second stacking rack 18 is arranged across the second conveyor line 5, and the second material trays 2 are stacked in the second stacking rack 18. The second lifting assembly can support and lift all the second material trays 2 stacked in the second stacking rack 18. The second lifting assembly includes two groups of second lifting plates 20 and two groups of second driving members, and the second lifting assembly includes a second lifting plate 19 and a second lifting member. Similarly, when the second material tray 2 is unloaded, the process is the same as the unloading process of the first feeding mechanism 4.

[0044] The storage mechanism 10 is arranged at the end of the second conveyor line 5. The storage mechanism 10 is used to receive the unloaded second material tray 2. Specifically, the storage mechanism 10 includes a third stacking rack, a third lifting assembly and a third lifting assembly. Its structure is the same as that of the second feeding mechanism 6. The unloaded second material trays 2 are stacked in the third stacking rack. The third lifting assembly can support and lift all the second material trays 2 stacked in the second stacking rack 18. The third lifting assembly includes two third lifting plates and two third driving members. The third lifting assembly includes a third lifting plate and a third lifting member. When storing the unloaded second material tray 2, first, the second material tray 2 is moved to the bottom of the third stacking rack via the second conveyor line 5. The third lifting assembly rises to support the second material tray 2 and lifts the second material tray 2 into the third stacking rack, and then the two third lifting plates are inserted into the empty slot at the bottom of the second material tray 2 to support the second material tray 2; such repeated actions can stack the unloaded second material tray 2 from bottom to top in the third stacking rack.

[0045] In addition, the second stacking rack 18 of the second feeding mechanism 6 is provided with a sealing plate 21 on one side facing the operating surface of the machine body 11. A feeding channel 22 is also provided on the machine body 11, which is connected to the sealing plate 21. After opening the sealing plate 21, the stacked second material trays 2 can be directly pushed into the second stacking rack 18 from the feeding channel 22; similarly, the third stacking rack of the storage mechanism 10 is also provided with a sealing plate 21, and a feeding channel 22 is correspondingly provided. After opening the sealing plate 21, the stacked unloaded second material trays 2 can be pulled out through the feeding channel 22. Such a configuration can facilitate loading and unloading of the second material trays 2.

[0046] The second conveyor line 5 is provided with a material taking station, that is, the second workpiece in the second material tray 2 needs to be moved to the material taking station to wait for being grabbed. The positioning mechanism 9 is provided between the first conveyor line 3 and the second conveyor line 5, and the first grabbing mechanism 7 is used to grab the second workpiece from the material taking station to the positioning mechanism 9 for positioning. The second grabbing mechanism 8 is used to grab the second workpiece that has been positioned to the assembly station of the first conveyor line 3 for assembly.

[0047] Reference Fig. 9 The first grasping mechanism 7 includes a first moving machine 23 and a first gripper 24. The end of the first gripper 24 adopts a flexible manipulator, which can pick up and place the second workpiece. The first moving machine 23 drives the first gripper 24 to lift or translate. The second grasping mechanism 8 includes a second moving member 25 and a second gripper 26. The second gripper 26 adopts a vacuum suction nozzle, which can accurately grasp the second workpiece. The first moving machine 23 and the second moving member 25 both adopt X-axis and Y-axis linear motors to drive the first gripper 24 to move.

[0048] Reference Fig.10 The positioning mechanism 9 includes a positioning platform 27, a fixed slot body 28, a fixed baffle 29, a first movable baffle 30, a second movable baffle 31, a first driving part 35 and a second driving part 36. The fixed slot body 28 is arranged on the fixed platform. The fixed baffle 29, the first movable baffle 30 and the second movable baffle 31 are all located in the fixed slot body 28, and can be enclosed with a side wall of the fixed slot body 28 to form a rectangle to clamp the second workpiece placed in the fixed slot body 28. The first driving part 35 can drive the first movable baffle 30 to move closer to or away from the fixed baffle 29, and the second driving part 36 can drive the second movable baffle 31 to move closer to or away from a side wall of the fixed slot body 28. There are at least two fixed baffles 29 evenly spaced on the fixed slot body 28, and the number of the fixed baffles 29, the first movable baffle 30 and the second movable baffle 31 corresponds to the fixed slot body 28 one by one. In this embodiment, four fixed slot bodies 28 are provided.

[0049] Furthermore, a fixed baffle 32, a first movable plate 33 and a second movable plate 34 are provided on the fixed platform. The fixed baffle 29 is evenly spaced and connected to the fixed baffle 32, and the fixed baffle 32 is fixedly mounted on the fixed platform. The first movable baffle 30 is evenly spaced and connected to the first movable baffle, and the first driving unit 35 is driven and connected to the first movable baffle to drive the first movable baffle 30 to move closer to or away from the fixed baffle 29. The second movable baffle 31 is evenly spaced and connected to the second movable baffle, and the second driving unit 36 ​​is driven and connected to the second movable baffle to drive the second movable baffle 31 to move closer to or away from a side wall of the positioning groove body. Among them, both the first driving unit 35 and the second driving unit 36 ​​can use a motor to drive the screw rod to rotate, and are connected to the movable baffle through the screw rod to realize the movement of the movable baffle. In other embodiments, the first driving unit 35 and the second driving unit 36 ​​can also directly use a cylinder to drive the movable baffle to move.

[0050] After the second workpiece is positioned, the second grabbing mechanism 8 can grab the second workpiece from the positioning groove, and move it to the assembly station through the second moving member 25, and press the second workpiece down one by one, so that the second workpiece is clamped into the first workpiece in the first material tray 1, and the first workpiece and the second workpiece are assembled. After the assembly is completed, the first material tray 1 is sent out on the first conveyor line 3.

[0051] In this way, the first workpiece and the second workpiece can be automatically installed, thereby improving production efficiency.

[0052] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An assembly machine for assembling a mobile phone lens motor assembly, characterized in that: The assembly machine includes a first conveying line, a first feeding mechanism, a second conveying line, a second feeding mechanism, a first grasping mechanism, a second grasping mechanism, and a positioning mechanism; The first feeding mechanism includes a first material stacking rack, a first lifting assembly, and a first lifting assembly; the first material stacking rack is arranged across the first conveyor line, and the first material tray containing the first workpiece is stacked in the first material stacking rack; the first lifting assembly can support and lift all the first material trays stacked in the first material stacking rack; the first lifting assembly is located under the first material stacking rack, and is used to support the first material tray and can drive the first material tray to rise and fall; The second feeding mechanism includes a second material stacking rack, a second lifting assembly, and a second lifting assembly; the second material stacking rack is arranged across the second conveyor line, and the second material stacking rack is used for stacking second material trays with second workpieces therein; the second lifting assembly can support and lift all the second material trays stacked in the second material stacking rack; the second lifting assembly is located under the second material stacking rack, and is used for supporting the first material tray and driving the first material tray to rise and fall; An assembly station is provided on the first conveyor line, and a material picking station is provided on the second conveyor line; the positioning mechanism is provided between the first conveyor line and the second conveyor line; the first grabbing mechanism is used to grab the second workpiece from the second material tray on the material picking station and place it into the positioning mechanism; the positioning mechanism is used to position the second workpiece, and the second grabbing mechanism is used to grab the second workpiece from the positioning mechanism and place it into the first material tray on the assembly station for assembly.

2. An assembly machine according to claim 1, characterized in that: The positioning mechanism includes a positioning platform, a fixed groove body, a fixed blocking wall, a first movable blocking wall, a second movable blocking wall, a first driving unit and a second driving unit; the fixed groove body is arranged on the fixed platform; the fixed blocking wall, the first movable blocking wall and the second movable blocking wall are all located in the fixed groove body, and can be enclosed by a side wall of the fixed groove body to form a rectangle so as to clamp the second workpiece placed in the fixed groove body; the first driving unit can drive the first movable blocking wall to move closer to or away from the fixed blocking wall, and the second driving unit can drive the second movable blocking wall to move closer to or away from a side wall of the fixed groove body.

3. An assembly machine according to claim 2, characterized in that: At least two fixed blocking walls, first movable blocking walls and second movable blocking walls are evenly spaced and arranged on the fixed slot body, and the number of the fixed blocking walls, the first movable blocking walls and the second movable blocking walls corresponds to the number of the fixed slot bodies.

4. An assembly machine according to claim 3, characterized in that: A fixed baffle, a first movable plate and a second movable plate are provided on the fixed platform; the fixed baffle wall is evenly spaced and connected to the fixed baffle, and the fixed baffle is fixedly mounted on the fixed platform; the first movable baffle wall is evenly spaced and connected to the first movable baffle, and the first driving unit is driven and connected to the first movable baffle to drive the first movable baffle to move closer to or away from the fixed baffle; the second movable baffle wall is evenly spaced and connected to the second movable baffle, and the second driving unit is driven and connected to the second movable baffle to drive the second movable baffle to move closer to or away from a side wall of the fixed trough body.

5. An assembly machine according to claim 1, characterized in that: The first lifting assembly includes two groups of first lifting plates and two groups of first driving members, and the first driving members correspond to the first lifting plates one by one; the two first driving members are symmetrically arranged on both sides of the first stacking rack, and are used to drive the two first lifting plates to move closer to or away from each other; the first lifting plate is provided with a first plug-in portion that can be inserted into the bottom of the first material tray to lift the stacked first material tray.

6. An assembly machine according to claim 1, characterized in that: The first lifting assembly includes a first lifting plate and a first lifting member, and the first lifting member drives the first lifting plate to move up and down.

7. An assembly machine according to claim 1, characterized in that: An auxiliary lifting plate and an auxiliary limiting wheel are sequentially arranged at the assembly station along the conveying direction of the first conveyor line. Both the auxiliary lifting plate and the auxiliary limiting wheel can be lifted and lowered. The auxiliary lifting plate is used to support the first material tray to separate it from the first conveyor line, and the auxiliary limiting wheel can prevent the first material tray from moving along the first conveying direction.

8. An assembly machine according to claim 1, characterized in that: It also includes a storage mechanism, which is arranged across the second conveyor line; the storage mechanism has the same structure as the second unloading mechanism and is used to stack empty second material trays.

9. An assembly machine according to claim 1, characterized in that: One side of the second material stacking rack is provided with a sealing plate which can be opened, and the second material stacking rack is connected to a feeding channel on the side with the sealing plate for pushing the second material tray.

10. An assembly machine according to claim 1, characterized in that: It also includes a machine body, the first conveying line is installed on the machine body, the first conveying line includes a first conveying assembly, a transition conveying assembly and a second conveying assembly; the first conveying assembly is arranged perpendicular to the conveying direction of the second conveying assembly, and the conveying surface of the second conveying assembly is lower than the first conveying assembly; the transition conveying assembly is arranged at the end of the second conveying assembly close to the first conveying assembly, The machine body is provided with a transition lifting member for driving the transition conveying assembly to rise and fall, for driving the transition conveying assembly to rise to connect with the first material tray conveyed to the end of the first conveying assembly, and for driving the transition conveying assembly to descend and be placed on the second conveying line.

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