Workpiece pre-assembling device

Abstract

The utility model discloses a workpiece pre-assembling device. The workpiece pre-assembling device comprises a first workpiece conveying module, a second workpiece conveying module, a workpiece pre-assembling module, a first workpiece transferring mechanism and a second workpiece transferring mechanism. The first workpiece conveying module is used for conveying a first workpiece, the second workpiece conveying module is used for conveying a second workpiece, the workpiece pre-assembling module is used for pressing the first workpiece and the second workpiece to form a pre-pressed finished product, and the pre-pressed finished product conveying module is used for conveying the pre-pressed finished product to a downstream station; the first workpiece transferring mechanism is used for transferring the first workpiece from the first workpiece conveying module to the workpiece pre-assembling module; the second workpiece conveying module is used for transferring the second workpiece from the second workpiece conveying module to the workpiece pre-assembling module. The device can meet the requirement for the cleanliness of the workpiece, metal particles cannot be generated, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model particularly relates to a workpiece pre-assembly device for realizing the assembly of metal workpieces and non-metal workpieces, belonging to the technical field of parts assembly. Background Art

[0002] The battery industry involves the assembly and loading of metal workpieces and non-metal workpieces. Since metal workpieces and non-metal workpieces need to be assembled in advance before loading, and metal workpieces are required not to produce metal particles during the loading process, a set of equipment is needed to provide metal workpiece loading and non-metal workpiece loading and assemble them together. Utility Model Content

[0003] The main purpose of the utility model is to provide a workpiece preassembly device, which solves the problem of high cleanliness requirements during parts assembly in the battery manufacturing industry and the problem of low parts assembly efficiency, thereby overcoming the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model includes:

[0005] The present invention provides a workpiece preassembly device, comprising:

[0006] A first workpiece conveying module, comprising a first conveying mechanism and a first carrier, wherein the first carrier is mounted on the first conveying mechanism, the first carrier has a receiving cavity for accommodating the first workpiece, and the first conveying mechanism is used to convey the first carrier together with the first workpiece to a first workstation;

[0007] A lifting and loading module, disposed at the first station and used to eject at least a portion of the first workpiece from the receiving cavity, so that the first workpiece and the first carrier are in a separable state;

[0008] A second workpiece conveying module, comprising a second conveying mechanism, wherein the second conveying mechanism is used to carry a second workpiece and convey the second workpiece to a second workstation;

[0009] A workpiece preassembly module, comprising an assembly platform and a pressing mechanism, wherein the assembly platform is used to carry the first workpiece and the second workpiece, and to preassemble the first workpiece and the second workpiece, and to transport the preassembled first workpiece and the second workpiece to a third station, wherein the pressing mechanism is disposed at the third station, and is used to press the preassembled first workpiece and the second workpiece on the assembly platform to form a pre-pressed finished product;

[0010] A transfer module is at least used to transfer the first workpiece between the first conveying mechanism and the assembly platform, transfer the second workpiece between the second conveying mechanism and the assembly platform, and transfer the pre-pressed finished product to a downstream functional module.

[0011] Compared with the prior art, the advantages of the present invention include: a workpiece preassembly device provided by the embodiment of the present invention has an ingenious structural design, which not only meets the requirements for workpiece cleanliness and does not generate metal particles, but also greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a workpiece preassembly device provided in a typical implementation case of the utility model;

[0014] Figure 2 It is a side structural schematic diagram of a workpiece preassembly device provided in a typical implementation case of the utility model;

[0015] Figure 3 It is a structural schematic diagram of a carrier and a lifting and loading module in a typical implementation case of the utility model;

[0016] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a cylinder in a typical implementation case of the utility model;

[0017] Figure 5 It is a structural schematic diagram of a transfer robot arm in a typical implementation case of the utility model. DETAILED DESCRIPTION

[0018] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0019] The present invention provides a workpiece preassembly device, comprising:

[0020] A first workpiece conveying module, comprising a first conveying mechanism and a first carrier, wherein the first carrier is mounted on the first conveying mechanism, the first carrier has a receiving cavity for accommodating the first workpiece, and the first conveying mechanism is used to convey the first carrier together with the first workpiece to a first workstation;

[0021] A lifting and loading module, disposed at the first station and used to eject at least a portion of the first workpiece from the receiving cavity, so that the first workpiece and the first carrier are in a separable state;

[0022] A second workpiece conveying module, comprising a second conveying mechanism, wherein the second conveying mechanism is used to carry a second workpiece and convey the second workpiece to a second workstation;

[0023] A workpiece preassembly module, comprising an assembly platform and a pressing mechanism, wherein the assembly platform is used to carry the first workpiece and the second workpiece, and to preassemble the first workpiece and the second workpiece, and to transport the preassembled first workpiece and the second workpiece to a third station, wherein the pressing mechanism is disposed at the third station, and is used to press the preassembled first workpiece and the second workpiece on the assembly platform to form a pre-pressed finished product;

[0024] A transfer module is at least used to transfer the first workpiece between the first conveying mechanism and the assembly platform, transfer the second workpiece between the second conveying mechanism and the assembly platform, and transfer the pre-pressed finished product to a downstream functional module.

[0025] Furthermore, the carrier is a barrel with two ends open.

[0026] Furthermore, the first conveying mechanism includes a ring-shaped circulating track conveying mechanism.

[0027] Furthermore, the carrier is detachably arranged on the first conveying mechanism.

[0028] Furthermore, the first workpiece conveying module includes a plurality of the carriers, and the plurality of the carriers are sequentially installed at intervals on the first conveying mechanism.

[0029] Furthermore, the lifting and loading module includes a first driving mechanism and a lifting rod, the lifting rod is transmission-connected to the first driving mechanism and can move along a specified direction under the drive of the first driving mechanism, and the first workpiece located at the first workstation is located on the movement trajectory of the lifting rod.

[0030] Furthermore, the axis of the barrel is parallel to the axis of the lifting rod, and the lifting rod can enter the receiving cavity of the carrier located at the first station and eject the product in the receiving cavity.

[0031] Furthermore, the second workpiece conveying module includes a vibrating plate conveying mechanism.

[0032] Furthermore, the assembly platform includes a turntable and a second driving mechanism, the turntable is transmission-connected to the second driving mechanism and can rotate around a selected axis when driven by the second driving mechanism, and the turntable is also provided with a positioning groove, the positioning groove is at least used to accommodate the first workpiece and the second workpiece, and the positioning groove only allows the first workpiece and the second workpiece to be stacked together in a specified posture to achieve pre-assembly of the first workpiece and the second workpiece, and the depth of the positioning groove is greater than the height of the second workpiece and less than or equal to the overall height of the first workpiece and the second workpiece stacked together in the specified posture.

[0033] Furthermore, the turntable is provided with a plurality of the positioning grooves, and the plurality of the positioning grooves are sequentially spaced apart along the circumference of the turntable.

[0034] Furthermore, the transfer module includes independently arranged first workpiece transfer mechanism, second workpiece transfer mechanism and pre-pressed finished product transfer mechanism, the first workpiece transfer mechanism is used to transfer the first workpiece between the first conveying mechanism and the assembly platform; the second workpiece transfer mechanism is used to transfer the second workpiece between the second conveying mechanism and the assembly platform, and the pre-pressed finished product transfer mechanism is used to transfer the pre-pressed finished product to a downstream functional module.

[0035] Furthermore, the first workpiece transfer mechanism, the second workpiece transfer mechanism and the pre-pressed finished product transfer mechanism are all translational transport mechanisms, and the translational transport mechanism includes a third driving mechanism and an adsorption mechanism. The adsorption mechanism is transmission-connected to the third driving mechanism and can perform translational movement under the drive of the third driving mechanism. The adsorption mechanism can be detachably connected to the first workpiece, the second workpiece and the pre-pressed finished product by magnetic adsorption or negative pressure adsorption.

[0036] Furthermore, the adsorption mechanism includes a magnet, or the adsorption mechanism includes a suction cup and a vacuum air path component matching the suction cup.

[0037] Furthermore, the downstream functional module includes a pre-pressed finished product conveying module, and the pre-pressed finished product conveying module is at least used to convey the pre-pressed finished product to a downstream workstation.

[0038] The technical solution, its implementation process and principles will be further explained below in conjunction with the accompanying drawings and specific implementation cases. Unless otherwise specified, the motors, cylinders, rails, vacuum pumps, etc. used in the embodiments of the utility model are all known to those skilled in the art, and their specific structures and product models are not limited here.

[0039] See also Figure 1 and Figure 2, a workpiece preassembly device, comprising a frame 1 and a first workpiece conveying module 2, a second workpiece conveying module 10, a workpiece preassembly module, a pre-pressed finished product conveying module 8, a first workpiece transfer mechanism 4, a second workpiece transfer mechanism 9 and a pre-pressed finished product transfer mechanism 7 installed on the frame 1;

[0040] The first workpiece conveying module 2 is used to convey the first workpiece, the second workpiece conveying module 10 is used to convey the second workpiece, the workpiece preassembly module is used to press the first workpiece and the second workpiece to form a pre-pressed finished product, and the pre-pressed finished product conveying module 8 is used to convey the pre-pressed finished product to a downstream station;

[0041] The first workpiece transfer mechanism 4 is arranged between the first workpiece conveying module 2 and the workpiece preassembly module, and is used to transfer the first workpiece from the first workpiece conveying module 2 to the workpiece preassembly module; the second workpiece conveying module 10 is arranged between the second workpiece conveying module 10 and the workpiece preassembly module, and is used to transfer the second workpiece from the second workpiece conveying module 10 to the workpiece preassembly module; the pre-pressed finished product transfer mechanism 7 is arranged between the workpiece preassembly module and the pre-pressed finished product conveying module 8, and is used to transfer the pre-pressed finished product to the pre-pressed finished product conveying module 8.

[0042] Specifically, the first workpiece conveying module 2 includes a first conveying mechanism and a plurality of carriers 11, the carriers 11 are used to carry the first workpiece, the plurality of carriers 11 are detachably mounted on the first conveying mechanism, and the first workpiece is conveyed together with the carriers 11 by the first conveying mechanism. More specifically, the first conveying mechanism may be a ring-shaped circulating track conveying mechanism, the first conveying mechanism may be a chain or belt conveying mechanism, and the connection structure or method of the carrier 11 and the first conveying mechanism may adopt a structure / method known to those skilled in the art, which is not limited here.

[0043] For more details, see Figure 3 and Figure 4 The carrier 11 has a barrel with a receiving cavity open at both ends, and the first workpiece 12 is arranged in the receiving cavity. Accordingly, a lifting and loading module 3 is also provided at the first station. The lifting and loading module 3 is used to eject at least a part of the first workpiece 12 from the receiving cavity of the carrier 11 so that the first workpiece 12 and the carrier 11 are in a separable state, that is, at the first station, after the first workpiece 12 is ejected by the lifting and loading module 3, the first workpiece 12 can be grasped and transferred by the first workpiece transfer mechanism 4.

[0044] More specifically, the lifting and loading module 3 includes a lifting drive mechanism (i.e., the aforementioned first drive mechanism) 14 and a lifting rod 13. The lifting rod 13 is connected to the lifting drive mechanism 14 in a transmission manner and can move in a specified direction driven by the lifting drive mechanism 14. The specified direction is parallel to the axis of the lifting rod 13 and the axis of the receiving cavity in the carrier 11. The carrier 11 / first workpiece 12 located at the first station is located on the motion trajectory of the lifting rod 13. Specifically, the lifting drive mechanism 14 is a linear drive mechanism. Exemplarily, the lifting drive mechanism 14 is a servo motor or a cylinder. It should be noted that the central axis direction of the receiving cavity of the carrier 11 is perpendicular to the direction of movement of the first conveying mechanism.

[0045] Specifically, the receiving cavity of the carrier 11 can accommodate multiple first workpieces 12, and the multiple first workpieces 12 are stacked along their own axial direction. A single operation of the lifting and loading module 3 can push one first workpiece 12 out of the receiving cavity. The annular first workpiece conveying module 2 can be installed with multiple carriers. When all the first workpieces in one of the carriers are transferred, a new first workpiece can be loaded. Such repeated operations can save time and improve efficiency. In addition, since the battery workpieces are small in size and large in number, it is time-consuming and laborious for workers to load the materials. Using a barrel as a carrier for the first workpiece, a large number of first workpieces can be stacked and loaded into the carrier, which not only reduces the workload of the operating workers and increases the space utilization rate, but also the cylindrical carrier is easier to clean, ensuring that the battery-related workpieces are not contaminated by impurities, improving the cleanliness, and reducing the cost of packaging and transportation.

[0046] Specifically, the shape of the receiving cavity in the carrier 11 matches the shape of the first workpiece 12. For example, the receiving cavity and the first workpiece 12 are both cylindrical structures, the diameter of the receiving cavity is greater than or equal to the diameter of the first workpiece 12, and the top and bottom of the receiving cavity have openings. The lifting rod 13 can enter from the opening at the bottom of the receiving cavity and push the first workpiece 12 out from the opening at the top of the receiving cavity. It can be understood that the opening at the top of the receiving cavity serves as an outlet, and its diameter is greater than or equal to the diameter of the lifting rod 13, and the opening at the bottom of the receiving cavity serves as an entrance for the lifting rod 13 to enter, and its diameter is greater than the diameter of the lifting rod 13 but smaller than the diameter of the first workpiece 12, so as to prevent the first workpiece 12 from falling from the carrier 11. In addition, in order to prevent the carrier from causing wear to the first workpiece, the inner wall of the receiving cavity inside the carrier should be smooth.

[0047] Specifically, the second workpiece conveying module 10 includes a vibrating plate conveying mechanism, and the second workstation can be located at the end of the vibrating plate conveying mechanism. Of course, the vibrating plate conveying mechanism can also be replaced by other forms of conveying mechanisms.

[0048] Specifically, the workpiece preassembly module includes a turntable 6, a rotary drive mechanism (i.e., the aforementioned second drive mechanism) and a pressing mechanism 5. The turntable 6 is transmission-connected to the rotary drive mechanism and can rotate under the drive of the rotary drive mechanism. The first workpiece conveying mechanism 2, the second workpiece conveying mechanism 10, and the pre-pressed finished product conveying module 8 are arranged in the surrounding area of ​​the turntable 6. A plurality of positioning grooves are arranged on the turntable 6, and the positioning grooves are used to pre-assemble and position the first workpiece and the second workpiece to be pressed. During the rotation of the turntable 6, on the one hand, the pre-assembly and positioning of the first workpiece and the second workpiece are realized, and on the other hand, the transmission of the first workpiece and the second workpiece is realized, and the pre-assembled first workpiece and the second workpiece are conveyed to the third station where the pressing mechanism 5 is located. The pressing mechanism 5 is used to press the pre-assembled first workpiece and the second workpiece located on the turntable 6 to form a pre-pressed finished product.

[0049] Specifically, a plurality of positioning grooves are arranged in sequence and spaced apart along the circumference of the turntable 6, the positioning grooves are used to accommodate at least the first workpiece and the second workpiece, and the positioning grooves only allow the first workpiece and the second workpiece to be stacked together in a specified posture to achieve pre-assembly of the first workpiece and the second workpiece, and the depth of the positioning grooves is greater than the height of the second workpiece and less than or equal to the overall height of the first workpiece and the second workpiece stacked together in the specified posture.

[0050] Specifically, the rotary drive mechanism may be a servo motor or a cylinder, etc. The connection structure / method of the rotary drive mechanism to drive the turntable 6 is known to those skilled in the art and is not specifically limited or described herein. The pressing mechanism 5 combines the first workpiece and the second workpiece by applying pressure to the pre-assembled body of the first workpiece and the second workpiece on the turntable 5. The power of the pressing mechanism 5 may come from a cylinder or a motor, etc., and the specific structure of the pressing mechanism 5 is not specifically limited.

[0051] Specifically, the structures of the first workpiece transfer mechanism 4, the second workpiece transfer mechanism 9 and the pre-pressed finished product transfer mechanism 7 can be the same, and all three are translational transport mechanisms. The structure of the first workpiece transfer mechanism 4 is taken as an example for specific description below, and technical personnel in this field can understand the structures of the second workpiece transfer mechanism 9 and the pre-pressed finished product transfer mechanism 7 without any objection.

[0052] Specifically, please refer to 5. The first workpiece transfer mechanism 4 includes a rotary drive mechanism 17, a PPU moving mechanism 18, a vacuum air circuit assembly 16 and a suction cup 15. The rotary drive mechanism 17 is connected to the suction cup 15 via the PPU moving mechanism 18. The suction cup 15 can perform linear reciprocating motion under the drive of the rotary drive mechanism 17. The suction cup 15 is also connected to the vacuum air circuit assembly 16. The vacuum air circuit assembly 16 can form a negative pressure in the suction cup 15, and by adjusting the working state / working parameters of the vacuum air circuit assembly 16, the suction cup 15 can adsorb, fix or release the first workpiece / second workpiece / pre-pressed finished product, thereby realizing the transfer of the first workpiece / second workpiece / pre-pressed finished product.

[0053] It should be noted that the vacuum air circuit assembly 16 and the suction cup 15 can also be replaced by an electromagnet assembly, that is, the adsorption, fixation or release of the first workpiece / second workpiece / pre-pressed finished product can be achieved by magnetic adsorption, but this method is only applicable to the case where the first workpiece / second workpiece / pre-pressed finished product contains ferromagnetic parts.

[0054] Specifically, the pre-pressed finished product conveying module 8 may be a chain or belt conveying mechanism, etc., and its specific structure is not limited or described herein.

[0055] In a more specific implementation case, the first workstation is a metal workpiece, the second workpiece is a non-metal workpiece, and both the first workpiece and the second workpiece are battery parts. The process of pressing and assembling the first workpiece and the second workpiece using the aforementioned workpiece preassembly device includes:

[0056] The second workpiece conveying mechanism 10 starts and conveys the non-metallic second workpiece to its end;

[0057] The second workpiece transfer mechanism 9 starts to work, that is, the rotary drive mechanism 17 starts to drive the PPU moving mechanism 18 and the suction cup 15 to move to the end of the second workpiece conveying mechanism 10. At the same time, the vacuum air circuit assembly 16 starts, so that the suction cup 15 has a vacuum adsorption function and adsorbs a second workpiece;

[0058] After the suction cup 15 of the second workpiece transfer mechanism 9 absorbs the second workpiece, the rotary drive mechanism 17 reverses and drives the PPU moving mechanism 18 to move above the turntable 6. Then the vacuum air path component 16 cancels the vacuum, and the second workpiece falls into a positioning groove on the turntable 6.

[0059] When the second workpiece falls into the positioning groove on the turntable 6, the turntable 6 starts to rotate, and stops rotating after rotating clockwise through a specified angle (for example, 90°). At the same time, the first workpiece conveying module 2 works and conveys the carrier 11 carrying the first workpiece to the first station and then pauses, that is, above the jacking and loading module 3. Subsequently, the jacking and loading module 3 is started, and the jacking rod 13 of the jacking and loading module 3 moves upward and pushes the first workpiece 12 to the uppermost end of the carrier 11. Then the first workpiece transfer mechanism 4 is started to transfer the first workpiece to the positioning groove containing the second workpiece. In the positioning groove, the first workpiece is arranged above the second workpiece.

[0060] Then the turntable 6 continues to rotate clockwise and rotates through a specified angle (e.g., 90°) and stops when the positioning groove containing the first workpiece and the second workpiece is located at the pressing mechanism 5. After stopping the rotation, the pressing mechanism 5 starts to press the first workpiece and the second workpiece in the positioning groove together to form a pre-pressed finished product.

[0061] Then the turntable 6 continues to rotate clockwise and pauses after rotating through a specified angle (e.g., 90°). After stopping, the pre-pressed finished product transfer mechanism 7 is started to grab the pre-pressed finished product and transfer it to the pre-pressed finished product conveying mechanism 8, thus completing the assembly of the single first workpiece and the second workpiece;

[0062] The above steps will be repeated until all the first workpieces in the current carrier are taken out, and then the first workpiece conveying module 2 will continue to rotate, so that the next carrier runs to the top of the lifting rod 13 and transfers the first workpiece.

[0063] The embodiment of the utility model provides a workpiece preassembly device with an ingenious structural design, which not only meets the requirements for the cleanliness of the workpiece and does not generate metal particles, but also greatly improves the work efficiency.

[0064] Although the utility model has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and / or additions may be made without departing from the spirit and scope of the utility model, and the elements of the embodiments may be replaced by substantial equivalents. In addition, many modifications may be made without departing from the scope of the utility model to adapt specific situations or materials to the teachings of the utility model. Therefore, it is not intended herein to limit the utility model to the disclosed specific embodiments for performing the utility model, but it is intended that the utility model will include all embodiments within the scope of the appended claims. In addition, unless specifically stated, any use of the terms first, second, etc. does not indicate any order or importance, but uses the terms first, second, etc. to distinguish one element from another element.

[0065] It should be understood that the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A workpiece preassembly device, characterized in that: include A first workpiece conveying module, comprising a first conveying mechanism and a first carrier, wherein the first carrier is mounted on the first conveying mechanism, the first carrier has a receiving cavity for accommodating the first workpiece, and the first conveying mechanism is used to convey the first carrier together with the first workpiece to a first workstation; A lifting and loading module, disposed at the first station and used to eject at least a portion of the first workpiece from the receiving cavity, so that the first workpiece and the first carrier are in a separable state; A second workpiece conveying module, comprising a second conveying mechanism, wherein the second conveying mechanism is used to carry a second workpiece and convey the second workpiece to a second workstation; A workpiece preassembly module, comprising an assembly platform and a pressing mechanism, wherein the assembly platform is used to carry the first workpiece and the second workpiece, and to preassemble the first workpiece and the second workpiece, and to transport the preassembled first workpiece and the second workpiece to a third station, wherein the pressing mechanism is disposed at the third station, and is used to press the preassembled first workpiece and the second workpiece on the assembly platform to form a pre-pressed finished product; A transfer module is at least used to transfer the first workpiece between the first conveying mechanism and the assembly platform, transfer the second workpiece between the second conveying mechanism and the assembly platform, and transfer the pre-pressed finished product to a downstream functional module.

2. The workpiece preassembly device according to claim 1, characterized in that: The carrier is a barrel with two ends open.

3. The workpiece preassembly device according to claim 1, characterized in that: The first conveying mechanism comprises a ring-shaped circulating track conveying mechanism; And / or, the carrier is detachably arranged on the first conveying mechanism; And / or, the first workpiece conveying module includes a plurality of the carriers, and the plurality of the carriers are sequentially installed at intervals on the first conveying mechanism.

4. The workpiece preassembly device according to claim 2, characterized in that: The lifting and loading module includes a first driving mechanism and a lifting rod, wherein the lifting rod is in transmission connection with the first driving mechanism and can move along a specified direction under the driving of the first driving mechanism, and the first workpiece located at the first station is located on the movement track of the lifting rod; And / or, the axis of the barrel is parallel to the axis of the lifting rod, and the lifting rod can enter the receiving cavity of the carrier located at the first station and eject the product in the receiving cavity.

5. The workpiece preassembly device according to claim 1, characterized in that: The second workpiece conveying module includes a vibrating plate conveying mechanism.

6. The workpiece preassembly device according to claim 1, characterized in that: The assembly platform includes a turntable and a second driving mechanism, the turntable is in driving connection with the second driving mechanism and can rotate around a selected axis under the drive of the second driving mechanism, and the turntable is further provided with a positioning groove, the positioning groove is used to accommodate at least the first workpiece and the second workpiece, and the positioning groove only allows the first workpiece and the second workpiece to be stacked together in a specified posture to realize the pre-assembly of the first workpiece and the second workpiece, and the depth of the positioning groove is greater than the height of the second workpiece and less than or equal to the overall height of the first workpiece and the second workpiece stacked together in the specified posture; And / or, a plurality of the positioning grooves are arranged on the turntable, and the plurality of the positioning grooves are arranged in sequence and spaced apart along the circumference of the turntable.

7. The workpiece preassembly device according to claim 1, characterized in that: The transfer module includes a first workpiece transfer mechanism, a second workpiece transfer mechanism and a pre-pressed finished product transfer mechanism which are independently arranged, wherein the first workpiece transfer mechanism is used to transfer the first workpiece between the first conveying mechanism and the assembly platform; The second workpiece transfer mechanism is used to transfer the second workpiece between the second conveying mechanism and the assembly platform, and the pre-pressed finished product transfer mechanism is used to transfer the pre-pressed finished product to a downstream functional module.

8. The workpiece preassembly device according to claim 7, characterized in that: The first workpiece transfer mechanism, the second workpiece transfer mechanism and the pre-pressed finished product transfer mechanism are all translational transport mechanisms, and the translational transport mechanism includes a third driving mechanism and an adsorption mechanism. The adsorption mechanism is transmission-connected to the third driving mechanism and can perform translational movement under the drive of the third driving mechanism. The adsorption mechanism can be detachably connected to the first workpiece, the second workpiece and the pre-pressed finished product by magnetic adsorption or negative pressure adsorption.

9. The workpiece preassembly device according to claim 8, characterized in that: The adsorption mechanism includes a magnet, or the adsorption mechanism includes a suction cup and a vacuum air path component matching the suction cup.

10. The workpiece preassembly device according to claim 1, characterized in that: The downstream functional module includes a pre-pressed finished product conveying module, and the pre-pressed finished product conveying module is at least used to convey the pre-pressed finished product to a downstream workstation.

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